1 Changes in version 0.2.2.7-alpha - 2009-??-??
3 - When choosing which cells to relay first, we can now favor circuits
4 that have been quiet recently, so as to get lower latency for
5 low-volume circuits. By default, relays enable or disable this
6 feature based on a setting in the consensus. Preliminary testing
7 suggests that this should make the network feel faster as more relays
8 use it. You can override this default by using the new
9 "CircuitPriorityHalflife" config option. Design and code by Ian
10 Goldberg, Can Tang, and Chris Alexander.
13 - New config option "CircuitStreamTimeout" to override our internal
14 timeout schedule for how many seconds until we detach a stream from
15 a circuit and try a new circuit. If your network is particularly
16 slow, you might want to set this to a number like 60.
17 - New controller command "getinfo config-text". It returns the
18 contents that Tor would write if you send it a SAVECONF command,
19 so the controller can write the file to disk itself.
20 - New options for SafeLogging to allow scrubbing only log messages
21 generated while acting as a relay.
24 - Fix compilation on OSX 10.3, which has a stub mlockall() but
25 hides it. Bugfix on 0.2.2.6-alpha.
26 - After we free an internal connection structure, overwrite it
27 with a different memory value than we use for overwriting a freed
28 internal circuit structure. Should help with debugging. Suggested
30 - Fix an instance where a Tor directory mirror might accidentally
31 log the IP address of a misbehaving Tor client. Bugfix on
33 - Update our OpenSSL 0.9.8l fix so that it works with OpenSSL 0.9.8m
35 - Do not segfault when writing buffer stats when we haven't observed
36 a single circuit to report about. Found by Fabian Lanze. Bugfix on
38 - Fix statistics on client numbers by country as seen by bridges that
39 were broken in 0.2.2.1-alpha. Also switch to reporting full 24-hour
40 intervals instead of variable 12-to-48-hour intervals.
43 - Remove the HSAuthorityRecordStats option that version 0 hidden
44 service authorities could have used to track statistics of overall
48 Changes in version 0.2.2.6-alpha - 2009-11-19
50 - Directory authorities can now create, vote on, and serve multiple
51 parallel formats of directory data as part of their voting process.
52 Partially implements Proposal 162: "Publish the consensus in
54 - Directory authorities can now agree on and publish small summaries
55 of router information that clients can use in place of regular
56 server descriptors. This transition will eventually allow clients
57 to use far less bandwidth for downloading information about the
58 network. Begins the implementation of Proposal 158: "Clients
59 download consensus + microdescriptors".
60 - The directory voting system is now extensible to use multiple hash
61 algorithms for signatures and resource selection. Newer formats
62 are signed with SHA256, with a possibility for moving to a better
63 hash algorithm in the future.
64 - New DisableAllSwap option. If set to 1, Tor will attempt to lock all
65 current and future memory pages via mlockall(). On supported
66 platforms (modern Linux and probably BSD but not Windows or OS X),
67 this should effectively disable any and all attempts to page out
68 memory. This option requires that you start your Tor as root --
69 if you use DisableAllSwap, please consider using the User option
70 to properly reduce the privileges of your Tor.
71 - Numerous changes, bugfixes, and workarounds from Nathan Freitas
72 to help Tor build correctly for Android phones.
75 - Work around a security feature in OpenSSL 0.9.8l that prevents our
76 handshake from working unless we explicitly tell OpenSSL that we
77 are using SSL renegotiation safely. We are, but OpenSSL 0.9.8l
78 won't work unless we say we are.
81 - Fix a crash bug when trying to initialize the evdns module in
82 Libevent 2. Bugfix on 0.2.1.16-rc.
83 - Stop logging at severity 'warn' when some other Tor client tries
84 to establish a circuit with us using weak DH keys. It's a protocol
85 violation, but that doesn't mean ordinary users need to hear about
86 it. Fixes the bug part of bug 1114. Bugfix on 0.1.0.13.
87 - Do not refuse to learn about authority certs and v2 networkstatus
88 documents that are older than the latest consensus. This bug might
89 have degraded client bootstrapping. Bugfix on 0.2.0.10-alpha.
90 Spotted and fixed by xmux.
91 - Fix numerous small code-flaws found by Coverity Scan Rung 3.
92 - If all authorities restart at once right before a consensus vote,
93 nobody will vote about "Running", and clients will get a consensus
94 with no usable relays. Instead, authorities refuse to build a
95 consensus if this happens. Bugfix on 0.2.0.10-alpha; fixes bug 1066.
96 - If your relay can't keep up with the number of incoming create
97 cells, it would log one warning per failure into your logs. Limit
98 warnings to 1 per minute. Bugfix on 0.0.2pre10; fixes bug 1042.
99 - Bridges now use "reject *:*" as their default exit policy. Bugfix
100 on 0.2.0.3-alpha; fixes bug 1113.
101 - Fix a memory leak on directory authorities during voting that was
102 introduced in 0.2.2.1-alpha. Found via valgrind.
105 Changes in version 0.2.2.5-alpha - 2009-10-11
106 Tor 0.2.2.5-alpha fixes a few compile problems in 0.2.2.4-alpha.
109 - Make the tarball compile again. Oops. Bugfix on 0.2.2.4-alpha.
111 o New directory authorities:
112 - Move dizum to an alternate IP address.
115 Changes in version 0.2.2.4-alpha - 2009-10-10
116 Tor 0.2.2.4-alpha fixes more crash bugs in 0.2.2.2-alpha. It also
117 introduces a new unit test framework, shifts directry authority
118 addresses around to reduce the impact from recent blocking events,
119 and fixes a few smaller bugs.
122 - Fix several more asserts in the circuit_build_times code, for
123 example one that causes Tor to fail to start once we have
124 accumulated 5000 build times in the state file. Bugfixes on
125 0.2.2.2-alpha; fixes bug 1108.
127 o New directory authorities:
128 - Move moria1 and Tonga to alternate IP addresses.
131 - Log SSL state transitions at debug level during handshake, and
132 include SSL states in error messages. This may help debug future
133 SSL handshake issues.
134 - Add a new "Handshake" log domain for activities that happen
135 during the TLS handshake.
136 - Revert to the "June 3 2009" ip-to-country file. The September one
137 seems to have removed most US IP addresses.
138 - Directory authorities now reject Tor relays with versions less than
139 0.1.2.14. This step cuts out four relays from the current network,
140 none of which are very big.
143 - Fix a couple of smaller issues with gathering statistics. Bugfixes
145 - Fix two memory leaks in the error case of
146 circuit_build_times_parse_state(). Bugfix on 0.2.2.2-alpha.
147 - Don't count one-hop circuits when we're estimating how long it
148 takes circuits to build on average. Otherwise we'll set our circuit
149 build timeout lower than we should. Bugfix on 0.2.2.2-alpha.
150 - Directory authorities no longer change their opinion of, or vote on,
151 whether a router is Running, unless they have themselves been
152 online long enough to have some idea. Bugfix on 0.2.0.6-alpha.
155 o Code simplifications and refactoring:
156 - Revise our unit tests to use the "tinytest" framework, so we
157 can run tests in their own processes, have smarter setup/teardown
158 code, and so on. The unit test code has moved to its own
159 subdirectory, and has been split into multiple modules.
162 Changes in version 0.2.2.3-alpha - 2009-09-23
163 Tor 0.2.2.3-alpha fixes a few crash bugs in 0.2.2.2-alpha.
166 - Fix an overzealous assert in our new circuit build timeout code.
167 Bugfix on 0.2.2.2-alpha; fixes bug 1103.
170 - If the networkstatus consensus tells us that we should use a
171 negative circuit package window, ignore it. Otherwise we'll
172 believe it and then trigger an assert. Bugfix on 0.2.2.2-alpha.
175 Changes in version 0.2.2.2-alpha - 2009-09-21
176 Tor 0.2.2.2-alpha introduces our latest performance improvement for
177 clients: Tor tracks the average time it takes to build a circuit, and
178 avoids using circuits that take too long to build. For fast connections,
179 this feature can cut your expected latency in half. For slow or flaky
180 connections, it could ruin your Tor experience. Let us know if it does!
183 - Tor now tracks how long it takes to build client-side circuits
184 over time, and adapts its timeout to local network performance.
185 Since a circuit that takes a long time to build will also provide
186 bad performance, we get significant latency improvements by
187 discarding the slowest 20% of circuits. Specifically, Tor creates
188 circuits more aggressively than usual until it has enough data
189 points for a good timeout estimate. Implements proposal 151.
190 We are especially looking for reports (good and bad) from users with
191 both EDGE and broadband connections that can move from broadband
192 to EDGE and find out if the build-time data in the .tor/state gets
193 reset without loss of Tor usability. You should also see a notice
194 log message telling you that Tor has reset its timeout.
195 - Directory authorities can now vote on arbitary integer values as
196 part of the consensus process. This is designed to help set
197 network-wide parameters. Implements proposal 167.
198 - Tor now reads the "circwindow" parameter out of the consensus,
199 and uses that value for its circuit package window rather than the
200 default of 1000 cells. Begins the implementation of proposal 168.
203 - Fix a remotely triggerable memory leak when a consensus document
204 contains more than one signature from the same voter. Bugfix on
208 - Fix an extremely rare infinite recursion bug that could occur if
209 we tried to log a message after shutting down the log subsystem.
210 Found by Matt Edman. Bugfix on 0.2.0.16-alpha.
211 - Fix parsing for memory or time units given without a space between
212 the number and the unit. Bugfix on 0.2.2.1-alpha; fixes bug 1076.
213 - A networkstatus vote must contain exactly one signature. Spec
214 conformance issue. Bugfix on 0.2.0.3-alpha.
215 - Fix an obscure bug where hidden services on 64-bit big-endian
216 systems might mis-read the timestamp in v3 introduce cells, and
217 refuse to connect back to the client. Discovered by "rotor".
218 Bugfix on 0.2.1.6-alpha.
219 - We were triggering a CLOCK_SKEW controller status event whenever
220 we connect via the v2 connection protocol to any relay that has
221 a wrong clock. Instead, we should only inform the controller when
222 it's a trusted authority that claims our clock is wrong. Bugfix
223 on 0.2.0.20-rc; starts to fix bug 1074. Reported by SwissTorExit.
224 - We were telling the controller about CHECKING_REACHABILITY and
225 REACHABILITY_FAILED status events whenever we launch a testing
226 circuit or notice that one has failed. Instead, only tell the
227 controller when we want to inform the user of overall success or
228 overall failure. Bugfix on 0.1.2.6-alpha. Fixes bug 1075. Reported
230 - Don't warn when we're using a circuit that ends with a node
231 excluded in ExcludeExitNodes, but the circuit is not used to access
232 the outside world. This should help fix bug 1090, but more problems
233 remain. Bugfix on 0.2.1.6-alpha.
234 - Work around a small memory leak in some versions of OpenSSL that
235 stopped the memory used by the hostname TLS extension from being
237 - Make our 'torify' script more portable; if we have only one of
238 'torsocks' or 'tsocks' installed, don't complain to the user;
239 and explain our warning about tsocks better.
242 - Add a "getinfo status/accepted-server-descriptor" controller
243 command, which is the recommended way for controllers to learn
244 whether our server descriptor has been successfully received by at
245 least on directory authority. Un-recommend good-server-descriptor
246 getinfo and status events until we have a better design for them.
247 - Update to the "September 4 2009" ip-to-country file.
250 Changes in version 0.2.2.1-alpha - 2009-08-26
251 Tor 0.2.2.1-alpha disables ".exit" address notation by default, allows
252 Tor clients to bootstrap on networks where only port 80 is reachable,
253 makes it more straightforward to support hardware crypto accelerators,
254 and starts the groundwork for gathering stats safely at relays.
257 - Start the process of disabling ".exit" address notation, since it
258 can be used for a variety of esoteric application-level attacks
259 on users. To reenable it, set "AllowDotExit 1" in your torrc. Fix
262 o New directory authorities:
263 - Set up urras (run by Jacob Appelbaum) as the seventh v3 directory
267 - New AccelName and AccelDir options add support for dynamic OpenSSL
268 hardware crypto acceleration engines.
269 - Tor now supports tunneling all of its outgoing connections over
270 a SOCKS proxy, using the SOCKS4Proxy and/or SOCKS5Proxy
271 configuration options. Code by Christopher Davis.
274 - Send circuit or stream sendme cells when our window has decreased
275 by 100 cells, not when it has decreased by 101 cells. Bug uncovered
276 by Karsten when testing the "reduce circuit window" performance
277 patch. Bugfix on the 54th commit on Tor -- from July 2002,
278 before the release of Tor 0.0.0. This is the new winner of the
281 o New options for gathering stats safely:
282 - Directories that set "DirReqStatistics 1" write statistics on
283 directory request to disk every 24 hours. As compared to the
284 --enable-geoip-stats flag in 0.2.1.x, there are a few improvements:
285 1) stats are written to disk exactly every 24 hours; 2) estimated
286 shares of v2 and v3 requests are determined as mean values, not at
287 the end of a measurement period; 3) unresolved requests are listed
288 with country code '??'; 4) directories also measure download times.
289 - Exit nodes that set "ExitPortStatistics 1" write statistics on the
290 number of exit streams and transferred bytes per port to disk every
292 - Relays that set "CellStatistics 1" write statistics on how long
293 cells spend in their circuit queues to disk every 24 hours.
294 - Entry nodes that set "EntryStatistics 1" write statistics on the
295 rough number and origins of connecting clients to disk every 24
297 - Relays that write any of the above statistics to disk and set
298 "ExtraInfoStatistics 1" include the past 24 hours of statistics in
299 their extra-info documents.
302 - New --digests command-line switch to output the digests of the
303 source files Tor was built with.
304 - The "torify" script now uses torsocks where available.
305 - The memarea code now uses a sentinel value at the end of each area
306 to make sure nothing writes beyond the end of an area. This might
307 help debug some conceivable causes of bug 930.
308 - Time and memory units in the configuration file can now be set to
309 fractional units. For example, "2.5 GB" is now a valid value for
311 - Certain Tor clients (such as those behind check.torproject.org) may
312 want to fetch the consensus in an extra early manner. To enable this
313 a user may now set FetchDirInfoExtraEarly to 1. This also depends on
314 setting FetchDirInfoEarly to 1. Previous behavior will stay the same
315 as only certain clients who must have this information sooner should
317 - Instead of adding the svn revision to the Tor version string, report
318 the git commit (when we're building from a git checkout).
321 - If any the v3 certs we download are unparseable, we should actually
322 notice the failure so we don't retry indefinitely. Bugfix on
323 0.2.0.x; reported by "rotator".
324 - If the cached cert file is unparseable, warn but don't exit.
325 - Fix possible segmentation fault on directory authorities. Bugfix on
327 - When Tor fails to parse a descriptor of any kind, dump it to disk.
328 Might help diagnosing bug 1051.
330 o Deprecated and removed features:
331 - The controller no longer accepts the old obsolete "addr-mappings/"
332 or "unregistered-servers-" GETINFO values.
333 - Hidden services no longer publish version 0 descriptors, and clients
334 do not request or use version 0 descriptors. However, the old hidden
335 service authorities still accept and serve version 0 descriptors
336 when contacted by older hidden services/clients.
337 - The EXTENDED_EVENTS and VERBOSE_NAMES controller features are now
338 always on; using them is necessary for correct forward-compatible
340 - Remove support for .noconnect style addresses. Nobody was using
341 them, and they provided another avenue for detecting Tor users
342 via application-level web tricks.
345 - Upgrade Vidalia from 0.1.15 to 0.2.3 in the Windows and OS X
346 installer bundles. See
347 https://trac.vidalia-project.net/browser/vidalia/tags/vidalia-0.2.3/CHANGELOG
348 for details of what's new in Vidalia 0.2.3.
349 - Windows Vidalia Bundle: update Privoxy from 3.0.6 to 3.0.14-beta.
350 - OS X Vidalia Bundle: move to Polipo 1.0.4 with Tor specific
351 configuration file, rather than the old Privoxy.
352 - OS X Vidalia Bundle: Vidalia, Tor, and Polipo are compiled as
353 x86-only for better compatibility with OS X 10.6, aka Snow Leopard.
354 - OS X Tor Expert Bundle: Tor is compiled as x86-only for
355 better compatibility with OS X 10.6, aka Snow Leopard.
356 - OS X Vidalia Bundle: The multi-package installer is now replaced
357 by a simple drag and drop to the /Applications folder. This change
358 occurred with the upgrade to Vidalia 0.2.3.
361 Changes in Version 0.2.1.21 - 20??-??-??
363 - Work around a security feature in OpenSSL 0.9.8l that prevents our
364 handshake from working unless we explicitly tell OpenSSL that we are
365 using SSL renegotiation safely. We are, of course, but OpenSSL
366 0.9.8l won't work unless we say we are.
367 - Avoid crashing if the client is trying to upload many bytes and the
368 circuit gets torn down at the same time, or if the flip side
369 happens on the exit relay. Bugfix on 0.2.0.1-alpha; fixes bug 1150.
372 - Do not refuse to learn about authority certs and v2 networkstatus
373 documents that are older than the latest consensus. This bug might
374 have degraded client bootstrapping. Bugfix on 0.2.0.10-alpha.
375 Spotted and fixed by xmux.
376 - Fix a couple of very-hard-to-trigger memory leaks, and one hard-to-
377 trigger platform-specific option misparsing case found by Coverity
379 - Fix a compilation warning on Fedora 12 by removing an impossible-to-
380 trigger assert. Fixes bug 1173.
383 Changes in version 0.2.1.20 - 2009-10-15
384 Tor 0.2.1.20 fixes a crash bug when you're accessing many hidden
385 services at once, prepares for more performance improvements, and
386 fixes a bunch of smaller bugs.
388 The Windows and OS X bundles also include a more recent Vidalia,
389 and switch from Privoxy to Polipo.
391 The OS X installers are now drag and drop. It's best to un-install
392 Tor/Vidalia and then install this new bundle, rather than upgrade. If
393 you want to upgrade, you'll need to update the paths for Tor and Polipo
394 in the Vidalia Settings window.
397 - Send circuit or stream sendme cells when our window has decreased
398 by 100 cells, not when it has decreased by 101 cells. Bug uncovered
399 by Karsten when testing the "reduce circuit window" performance
400 patch. Bugfix on the 54th commit on Tor -- from July 2002,
401 before the release of Tor 0.0.0. This is the new winner of the
403 - Fix a remotely triggerable memory leak when a consensus document
404 contains more than one signature from the same voter. Bugfix on
406 - Avoid segfault in rare cases when finishing an introduction circuit
407 as a client and finding out that we don't have an introduction key
408 for it. Fixes bug 1073. Reported by Aaron Swartz.
411 - Tor now reads the "circwindow" parameter out of the consensus,
412 and uses that value for its circuit package window rather than the
413 default of 1000 cells. Begins the implementation of proposal 168.
415 o New directory authorities:
416 - Set up urras (run by Jacob Appelbaum) as the seventh v3 directory
418 - Move moria1 and tonga to alternate IP addresses.
421 - Fix a signed/unsigned compile warning in 0.2.1.19.
422 - Fix possible segmentation fault on directory authorities. Bugfix on
424 - Fix an extremely rare infinite recursion bug that could occur if
425 we tried to log a message after shutting down the log subsystem.
426 Found by Matt Edman. Bugfix on 0.2.0.16-alpha.
427 - Fix an obscure bug where hidden services on 64-bit big-endian
428 systems might mis-read the timestamp in v3 introduce cells, and
429 refuse to connect back to the client. Discovered by "rotor".
430 Bugfix on 0.2.1.6-alpha.
431 - We were triggering a CLOCK_SKEW controller status event whenever
432 we connect via the v2 connection protocol to any relay that has
433 a wrong clock. Instead, we should only inform the controller when
434 it's a trusted authority that claims our clock is wrong. Bugfix
435 on 0.2.0.20-rc; starts to fix bug 1074. Reported by SwissTorExit.
436 - We were telling the controller about CHECKING_REACHABILITY and
437 REACHABILITY_FAILED status events whenever we launch a testing
438 circuit or notice that one has failed. Instead, only tell the
439 controller when we want to inform the user of overall success or
440 overall failure. Bugfix on 0.1.2.6-alpha. Fixes bug 1075. Reported
442 - Don't warn when we're using a circuit that ends with a node
443 excluded in ExcludeExitNodes, but the circuit is not used to access
444 the outside world. This should help fix bug 1090. Bugfix on
446 - Work around a small memory leak in some versions of OpenSSL that
447 stopped the memory used by the hostname TLS extension from being
451 - Add a "getinfo status/accepted-server-descriptor" controller
452 command, which is the recommended way for controllers to learn
453 whether our server descriptor has been successfully received by at
454 least on directory authority. Un-recommend good-server-descriptor
455 getinfo and status events until we have a better design for them.
458 Changes in version 0.2.1.19 - 2009-07-28
459 Tor 0.2.1.19 fixes a major bug with accessing and providing hidden
460 services on Tor 0.2.1.3-alpha through 0.2.1.18.
463 - Make accessing hidden services on 0.2.1.x work right again.
464 Bugfix on 0.2.1.3-alpha; workaround for bug 1038. Diagnosis and
465 part of patch provided by "optimist".
468 - When a relay/bridge is writing out its identity key fingerprint to
469 the "fingerprint" file and to its logs, write it without spaces. Now
470 it will look like the fingerprints in our bridges documentation,
471 and confuse fewer users.
474 - Relays no longer publish a new server descriptor if they change
475 their MaxAdvertisedBandwidth config option but it doesn't end up
476 changing their advertised bandwidth numbers. Bugfix on 0.2.0.28-rc;
477 fixes bug 1026. Patch from Sebastian.
478 - Avoid leaking memory every time we get a create cell but we have
479 so many already queued that we refuse it. Bugfix on 0.2.0.19-alpha;
480 fixes bug 1034. Reported by BarkerJr.
483 Changes in version 0.2.1.18 - 2009-07-24
484 Tor 0.2.1.18 lays the foundations for performance improvements,
485 adds status events to help users diagnose bootstrap problems, adds
486 optional authentication/authorization for hidden services, fixes a
487 variety of potential anonymity problems, and includes a huge pile of
488 other features and bug fixes.
491 - Add LIBS=-lrt to Makefile.am so the Tor RPMs use a static libevent.
494 Changes in version 0.2.1.17-rc - 2009-07-07
495 Tor 0.2.1.17-rc marks the fourth -- and hopefully last -- release
496 candidate for the 0.2.1.x series. It lays the groundwork for further
497 client performance improvements, and also fixes a big bug with directory
498 authorities that were causing them to assign Guard and Stable flags
501 The Windows bundles also finally include the geoip database that we
502 thought we'd been shipping since 0.2.0.x (oops), and the OS X bundles
503 should actually install Torbutton rather than giving you a cryptic
504 failure message (oops).
507 - Clients now use the bandwidth values in the consensus, rather than
508 the bandwidth values in each relay descriptor. This approach opens
509 the door to more accurate bandwidth estimates once the directory
510 authorities start doing active measurements. Implements more of
514 - When Tor clients restart after 1-5 days, they discard all their
515 cached descriptors as too old, but they still use the cached
516 consensus document. This approach is good for robustness, but
517 bad for performance: since they don't know any bandwidths, they
518 end up choosing at random rather than weighting their choice by
519 speed. Fixed by the above feature of putting bandwidths in the
520 consensus. Bugfix on 0.2.0.x.
521 - Directory authorities were neglecting to mark relays down in their
522 internal histories if the relays fall off the routerlist without
523 ever being found unreachable. So there were relays in the histories
524 that haven't been seen for eight months, and are listed as being
525 up for eight months. This wreaked havoc on the "median wfu"
526 and "median mtbf" calculations, in turn making Guard and Stable
527 flags very wrong, hurting network performance. Fixes bugs 696 and
528 969. Bugfix on 0.2.0.6-alpha.
531 - Serve the DirPortFrontPage page even when we have been approaching
532 our quotas recently. Fixes bug 1013; bugfix on 0.2.1.8-alpha.
533 - The control port would close the connection before flushing long
534 replies, such as the network consensus, if a QUIT command was issued
535 before the reply had completed. Now, the control port flushes all
536 pending replies before closing the connection. Also fixed a spurious
537 warning when a QUIT command is issued after a malformed or rejected
538 AUTHENTICATE command, but before the connection was closed. Patch
539 by Marcus Griep. Bugfix on 0.2.0.x; fixes bugs 1015 and 1016.
540 - When we can't find an intro key for a v2 hidden service descriptor,
541 fall back to the v0 hidden service descriptor and log a bug message.
542 Workaround for bug 1024.
543 - Fix a log message that did not respect the SafeLogging option.
547 - If we're a relay and we change our IP address, be more verbose
548 about the reason that made us change. Should help track down
549 further bugs for relays on dynamic IP addresses.
552 Changes in version 0.2.0.35 - 2009-06-24
554 - Avoid crashing in the presence of certain malformed descriptors.
555 Found by lark, and by automated fuzzing.
556 - Fix an edge case where a malicious exit relay could convince a
557 controller that the client's DNS question resolves to an internal IP
558 address. Bug found and fixed by "optimist"; bugfix on 0.1.2.8-beta.
561 - Finally fix the bug where dynamic-IP relays disappear when their
562 IP address changes: directory mirrors were mistakenly telling
563 them their old address if they asked via begin_dir, so they
564 never got an accurate answer about their new address, so they
565 just vanished after a day. For belt-and-suspenders, relays that
566 don't set Address in their config now avoid using begin_dir for
567 all direct connections. Should fix bugs 827, 883, and 900.
568 - Fix a timing-dependent, allocator-dependent, DNS-related crash bug
569 that would occur on some exit nodes when DNS failures and timeouts
570 occurred in certain patterns. Fix for bug 957.
573 - When starting with a cache over a few days old, do not leak
574 memory for the obsolete router descriptors in it. Bugfix on
575 0.2.0.33; fixes bug 672.
576 - Hidden service clients didn't use a cached service descriptor that
577 was older than 15 minutes, but wouldn't fetch a new one either,
578 because there was already one in the cache. Now, fetch a v2
579 descriptor unless the same descriptor was added to the cache within
580 the last 15 minutes. Fixes bug 997; reported by Marcus Griep.
583 Changes in version 0.2.1.16-rc - 2009-06-20
584 Tor 0.2.1.16-rc speeds up performance for fast exit relays, and fixes
585 a bunch of minor bugs.
588 - Fix an edge case where a malicious exit relay could convince a
589 controller that the client's DNS question resolves to an internal IP
590 address. Bug found and fixed by "optimist"; bugfix on 0.1.2.8-beta.
592 o Major performance improvements (on 0.2.0.x):
593 - Disable and refactor some debugging checks that forced a linear scan
594 over the whole server-side DNS cache. These accounted for over 50%
595 of CPU time on a relatively busy exit node's gprof profile. Found
597 - Disable some debugging checks that appeared in exit node profile
601 - Update to the "June 3 2009" ip-to-country file.
602 - Do not have tor-resolve automatically refuse all .onion addresses;
603 if AutomapHostsOnResolve is set in your torrc, this will work fine.
605 o Minor bugfixes (on 0.2.0.x):
606 - Log correct error messages for DNS-related network errors on
608 - Fix a race condition that could cause crashes or memory corruption
609 when running as a server with a controller listening for log
611 - Avoid crashing when we have a policy specified in a DirPolicy or
612 SocksPolicy or ReachableAddresses option with ports set on it,
613 and we re-load the policy. May fix bug 996.
614 - Hidden service clients didn't use a cached service descriptor that
615 was older than 15 minutes, but wouldn't fetch a new one either,
616 because there was already one in the cache. Now, fetch a v2
617 descriptor unless the same descriptor was added to the cache within
618 the last 15 minutes. Fixes bug 997; reported by Marcus Griep.
620 o Minor bugfixes (on 0.2.1.x):
621 - Don't warn users about low port and hibernation mix when they
622 provide a *ListenAddress directive to fix that. Bugfix on
624 - When switching back and forth between bridge mode, do not start
625 gathering GeoIP data until two hours have passed.
626 - Do not complain that the user has requested an excluded node as
627 an exit when the node is not really an exit. This could happen
628 because the circuit was for testing, or an introduction point.
632 Changes in version 0.2.1.15-rc - 2009-05-25
633 Tor 0.2.1.15-rc marks the second release candidate for the 0.2.1.x
634 series. It fixes a major bug on fast exit relays, as well as a variety
637 o Major bugfixes (on 0.2.0.x):
638 - Fix a timing-dependent, allocator-dependent, DNS-related crash bug
639 that would occur on some exit nodes when DNS failures and timeouts
640 occurred in certain patterns. Fix for bug 957.
642 o Minor bugfixes (on 0.2.0.x):
643 - Actually return -1 in the error case for read_bandwidth_usage().
644 Harmless bug, since we currently don't care about the return value
645 anywhere. Bugfix on 0.2.0.9-alpha.
646 - Provide a more useful log message if bug 977 (related to buffer
647 freelists) ever reappears, and do not crash right away.
648 - Fix an assertion failure on 64-bit platforms when we allocated
649 memory right up to the end of a memarea, then realigned the memory
650 one step beyond the end. Fixes a possible cause of bug 930.
651 - Protect the count of open sockets with a mutex, so we can't
652 corrupt it when two threads are closing or opening sockets at once.
653 Fix for bug 939. Bugfix on 0.2.0.1-alpha.
654 - Don't allow a bridge to publish its router descriptor to a
655 non-bridge directory authority. Fixes part of bug 932.
656 - When we change to or from being a bridge, reset our counts of
657 client usage by country. Fixes bug 932.
658 - Fix a bug that made stream bandwidth get misreported to the
660 - Stop using malloc_usable_size() to use more area than we had
661 actually allocated: it was safe, but made valgrind really unhappy.
662 - Fix a memory leak when v3 directory authorities load their keys
663 and cert from disk. Bugfix on 0.2.0.1-alpha.
665 o Minor bugfixes (on 0.2.1.x):
666 - Fix use of freed memory when deciding to mark a non-addable
667 descriptor as never-downloadable. Bugfix on 0.2.1.9-alpha.
670 Changes in version 0.2.1.14-rc - 2009-04-12
671 Tor 0.2.1.14-rc marks the first release candidate for the 0.2.1.x
672 series. It begins fixing some major performance problems, and also
673 finally addresses the bug that was causing relays on dynamic IP
674 addresses to fall out of the directory.
677 - Clients replace entry guards that were chosen more than a few months
678 ago. This change should significantly improve client performance,
679 especially once more people upgrade, since relays that have been
680 a guard for a long time are currently overloaded.
682 o Major bugfixes (on 0.2.0):
683 - Finally fix the bug where dynamic-IP relays disappear when their
684 IP address changes: directory mirrors were mistakenly telling
685 them their old address if they asked via begin_dir, so they
686 never got an accurate answer about their new address, so they
687 just vanished after a day. For belt-and-suspenders, relays that
688 don't set Address in their config now avoid using begin_dir for
689 all direct connections. Should fix bugs 827, 883, and 900.
690 - Relays were falling out of the networkstatus consensus for
691 part of a day if they changed their local config but the
692 authorities discarded their new descriptor as "not sufficiently
693 different". Now directory authorities accept a descriptor as changed
694 if bandwidthrate or bandwidthburst changed. Partial fix for bug 962;
696 - Avoid crashing in the presence of certain malformed descriptors.
697 Found by lark, and by automated fuzzing.
700 - When generating circuit events with verbose nicknames for
701 controllers, try harder to look up nicknames for routers on a
702 circuit. (Previously, we would look in the router descriptors we had
703 for nicknames, but not in the consensus.) Partial fix for bug 941.
704 - If the bridge config line doesn't specify a port, assume 443.
705 This makes bridge lines a bit smaller and easier for users to
707 - Raise the minimum bandwidth to be a relay from 20000 bytes to 20480
708 bytes (aka 20KB/s), to match our documentation. Also update
709 directory authorities so they always assign the Fast flag to relays
710 with 20KB/s of capacity. Now people running relays won't suddenly
711 find themselves not seeing any use, if the network gets faster
713 - Update to the "April 3 2009" ip-to-country file.
716 - Avoid trying to print raw memory to the logs when we decide to
717 give up on downloading a given relay descriptor. Bugfix on
719 - In tor-resolve, when the Tor client to use is specified by
720 <hostname>:<port>, actually use the specified port rather than
721 defaulting to 9050. Bugfix on 0.2.1.6-alpha.
722 - Make directory usage recording work again. Bugfix on 0.2.1.6-alpha.
723 - When starting with a cache over a few days old, do not leak
724 memory for the obsolete router descriptors in it. Bugfix on
726 - Avoid double-free on list of successfully uploaded hidden
727 service discriptors. Fix for bug 948. Bugfix on 0.2.1.6-alpha.
728 - Change memarea_strndup() implementation to work even when
729 duplicating a string at the end of a page. This bug was
730 harmless for now, but could have meant crashes later. Fix by
731 lark. Bugfix on 0.2.1.1-alpha.
732 - Limit uploaded directory documents to be 16M rather than 500K.
733 The directory authorities were refusing v3 consensus votes from
734 other authorities, since the votes are now 504K. Fixes bug 959;
735 bugfix on 0.0.2pre17 (where we raised it from 50K to 500K ;).
736 - Directory authorities should never send a 503 "busy" response to
737 requests for votes or keys. Bugfix on 0.2.0.8-alpha; exposed by
741 Changes in version 0.2.1.13-alpha - 2009-03-09
742 Tor 0.2.1.13-alpha includes another big pile of minor bugfixes and
743 cleanups. We're finally getting close to a release candidate.
746 - Correctly update the list of which countries we exclude as
747 exits, when the GeoIP file is loaded or reloaded. Diagnosed by
748 lark. Bugfix on 0.2.1.6-alpha.
750 o Minor bugfixes (on 0.2.0.x and earlier):
751 - Automatically detect MacOSX versions earlier than 10.4.0, and
752 disable kqueue from inside Tor when running with these versions.
753 We previously did this from the startup script, but that was no
754 help to people who didn't use the startup script. Resolves bug 863.
755 - When we had picked an exit node for a connection, but marked it as
756 "optional", and it turned out we had no onion key for the exit,
757 stop wanting that exit and try again. This situation may not
758 be possible now, but will probably become feasible with proposal
759 158. Spotted by rovv. Fixes another case of bug 752.
760 - Clients no longer cache certificates for authorities they do not
761 recognize. Bugfix on 0.2.0.9-alpha.
762 - When we can't transmit a DNS request due to a network error, retry
763 it after a while, and eventually transmit a failing response to
764 the RESOLVED cell. Bugfix on 0.1.2.5-alpha.
765 - If the controller claimed responsibility for a stream, but that
766 stream never finished making its connection, it would live
767 forever in circuit_wait state. Now we close it after SocksTimeout
768 seconds. Bugfix on 0.1.2.7-alpha; reported by Mike Perry.
769 - Drop begin cells to a hidden service if they come from the middle
770 of a circuit. Patch from lark.
771 - When we erroneously receive two EXTEND cells for the same circuit
772 ID on the same connection, drop the second. Patch from lark.
773 - Fix a crash that occurs on exit nodes when a nameserver request
774 timed out. Bugfix on 0.1.2.1-alpha; our CLEAR debugging code had
775 been suppressing the bug since 0.1.2.10-alpha. Partial fix for
777 - Do not assume that a stack-allocated character array will be
778 64-bit aligned on platforms that demand that uint64_t access is
779 aligned. Possible fix for bug 604.
780 - Parse dates and IPv4 addresses in a locale- and libc-independent
781 manner, to avoid platform-dependent behavior on malformed input.
782 - Build correctly when configured to build outside the main source
783 path. Patch from Michael Gold.
784 - We were already rejecting relay begin cells with destination port
785 of 0. Now also reject extend cells with destination port or address
786 of 0. Suggested by lark.
788 o Minor bugfixes (on 0.2.1.x):
789 - Don't re-extend introduction circuits if we ran out of RELAY_EARLY
790 cells. Bugfix on 0.2.1.3-alpha. Fixes more of bug 878.
791 - If we're an exit node, scrub the IP address to which we are exiting
792 in the logs. Bugfix on 0.2.1.8-alpha.
795 - On Linux, use the prctl call to re-enable core dumps when the user
797 - New controller event NEWCONSENSUS that lists the networkstatus
798 lines for every recommended relay. Now controllers like Torflow
799 can keep up-to-date on which relays they should be using.
800 - Update to the "February 26 2009" ip-to-country file.
803 Changes in version 0.2.0.34 - 2009-02-08
804 Tor 0.2.0.34 features several more security-related fixes. You should
805 upgrade, especially if you run an exit relay (remote crash) or a
806 directory authority (remote infinite loop), or you're on an older
807 (pre-XP) or not-recently-patched Windows (remote exploit).
809 This release marks end-of-life for Tor 0.1.2.x. Those Tor versions
810 have many known flaws, and nobody should be using them. You should
811 upgrade. If you're using a Linux or BSD and its packages are obsolete,
812 stop using those packages and upgrade anyway.
815 - Fix an infinite-loop bug on handling corrupt votes under certain
816 circumstances. Bugfix on 0.2.0.8-alpha.
817 - Fix a temporary DoS vulnerability that could be performed by
818 a directory mirror. Bugfix on 0.2.0.9-alpha; reported by lark.
819 - Avoid a potential crash on exit nodes when processing malformed
820 input. Remote DoS opportunity. Bugfix on 0.2.0.33.
821 - Do not accept incomplete ipv4 addresses (like 192.168.0) as valid.
822 Spec conformance issue. Bugfix on Tor 0.0.2pre27.
825 - Fix compilation on systems where time_t is a 64-bit integer.
826 Patch from Matthias Drochner.
827 - Don't consider expiring already-closed client connections. Fixes
828 bug 893. Bugfix on 0.0.2pre20.
831 Changes in version 0.2.1.12-alpha - 2009-02-08
832 Tor 0.2.1.12-alpha features several more security-related fixes. You
833 should upgrade, especially if you run an exit relay (remote crash) or
834 a directory authority (remote infinite loop), or you're on an older
835 (pre-XP) or not-recently-patched Windows (remote exploit). It also
836 includes a big pile of minor bugfixes and cleanups.
839 - Fix an infinite-loop bug on handling corrupt votes under certain
840 circumstances. Bugfix on 0.2.0.8-alpha.
841 - Fix a temporary DoS vulnerability that could be performed by
842 a directory mirror. Bugfix on 0.2.0.9-alpha; reported by lark.
843 - Avoid a potential crash on exit nodes when processing malformed
844 input. Remote DoS opportunity. Bugfix on 0.2.1.7-alpha.
847 - Let controllers actually ask for the "clients_seen" event for
848 getting usage summaries on bridge relays. Bugfix on 0.2.1.10-alpha;
849 reported by Matt Edman.
850 - Fix a compile warning on OSX Panther. Fixes bug 913; bugfix against
852 - Fix a bug in address parsing that was preventing bridges or hidden
853 service targets from being at IPv6 addresses.
854 - Solve a bug that kept hardware crypto acceleration from getting
855 enabled when accounting was turned on. Fixes bug 907. Bugfix on
857 - Remove a bash-ism from configure.in to build properly on non-Linux
858 platforms. Bugfix on 0.2.1.1-alpha.
859 - Fix code so authorities _actually_ send back X-Descriptor-Not-New
860 headers. Bugfix on 0.2.0.10-alpha.
861 - Don't consider expiring already-closed client connections. Fixes
862 bug 893. Bugfix on 0.0.2pre20.
863 - Fix another interesting corner-case of bug 891 spotted by rovv:
864 Previously, if two hosts had different amounts of clock drift, and
865 one of them created a new connection with just the wrong timing,
866 the other might decide to deprecate the new connection erroneously.
867 Bugfix on 0.1.1.13-alpha.
868 - Resolve a very rare crash bug that could occur when the user forced
869 a nameserver reconfiguration during the middle of a nameserver
870 probe. Fixes bug 526. Bugfix on 0.1.2.1-alpha.
871 - Support changing value of ServerDNSRandomizeCase during SIGHUP.
872 Bugfix on 0.2.1.7-alpha.
873 - If we're using bridges and our network goes away, be more willing
874 to forgive our bridges and try again when we get an application
875 request. Bugfix on 0.2.0.x.
878 - Support platforms where time_t is 64 bits long. (Congratulations,
879 NetBSD!) Patch from Matthias Drochner.
880 - Add a 'getinfo status/clients-seen' controller command, in case
881 controllers want to hear clients_seen events but connect late.
884 - Disable GCC's strict alias optimization by default, to avoid the
885 likelihood of its introducing subtle bugs whenever our code violates
886 the letter of C99's alias rules.
889 Changes in version 0.2.0.33 - 2009-01-21
890 Tor 0.2.0.33 fixes a variety of bugs that were making relays less
891 useful to users. It also finally fixes a bug where a relay or client
892 that's been off for many days would take a long time to bootstrap.
894 This update also fixes an important security-related bug reported by
895 Ilja van Sprundel. You should upgrade. (We'll send out more details
896 about the bug once people have had some time to upgrade.)
899 - Fix a heap-corruption bug that may be remotely triggerable on
900 some platforms. Reported by Ilja van Sprundel.
903 - When a stream at an exit relay is in state "resolving" or
904 "connecting" and it receives an "end" relay cell, the exit relay
905 would silently ignore the end cell and not close the stream. If
906 the client never closes the circuit, then the exit relay never
907 closes the TCP connection. Bug introduced in Tor 0.1.2.1-alpha;
909 - When sending CREATED cells back for a given circuit, use a 64-bit
910 connection ID to find the right connection, rather than an addr:port
911 combination. Now that we can have multiple OR connections between
912 the same ORs, it is no longer possible to use addr:port to uniquely
913 identify a connection.
914 - Bridge relays that had DirPort set to 0 would stop fetching
915 descriptors shortly after startup, and then briefly resume
916 after a new bandwidth test and/or after publishing a new bridge
917 descriptor. Bridge users that try to bootstrap from them would
918 get a recent networkstatus but would get descriptors from up to
919 18 hours earlier, meaning most of the descriptors were obsolete
920 already. Reported by Tas; bugfix on 0.2.0.13-alpha.
921 - Prevent bridge relays from serving their 'extrainfo' document
922 to anybody who asks, now that extrainfo docs include potentially
923 sensitive aggregated client geoip summaries. Bugfix on
925 - If the cached networkstatus consensus is more than five days old,
926 discard it rather than trying to use it. In theory it could be
927 useful because it lists alternate directory mirrors, but in practice
928 it just means we spend many minutes trying directory mirrors that
929 are long gone from the network. Also discard router descriptors as
930 we load them if they are more than five days old, since the onion
931 key is probably wrong by now. Bugfix on 0.2.0.x. Fixes bug 887.
934 - Do not mark smartlist_bsearch_idx() function as ATTR_PURE. This bug
935 could make gcc generate non-functional binary search code. Bugfix
937 - Build correctly on platforms without socklen_t.
938 - Compile without warnings on solaris.
939 - Avoid potential crash on internal error during signature collection.
940 Fixes bug 864. Patch from rovv.
941 - Correct handling of possible malformed authority signing key
942 certificates with internal signature types. Fixes bug 880.
943 Bugfix on 0.2.0.3-alpha.
944 - Fix a hard-to-trigger resource leak when logging credential status.
946 - When we can't initialize DNS because the network is down, do not
947 automatically stop Tor from starting. Instead, we retry failed
948 dns_init() every 10 minutes, and change the exit policy to reject
949 *:* until one succeeds. Fixes bug 691.
950 - Use 64 bits instead of 32 bits for connection identifiers used with
951 the controller protocol, to greatly reduce risk of identifier reuse.
952 - When we're choosing an exit node for a circuit, and we have
953 no pending streams, choose a good general exit rather than one that
954 supports "all the pending streams". Bugfix on 0.1.1.x. Fix by rovv.
955 - Fix another case of assuming, when a specific exit is requested,
956 that we know more than the user about what hosts it allows.
957 Fixes one case of bug 752. Patch from rovv.
958 - Clip the MaxCircuitDirtiness config option to a minimum of 10
959 seconds. Warn the user if lower values are given in the
960 configuration. Bugfix on 0.1.0.1-rc. Patch by Sebastian.
961 - Clip the CircuitBuildTimeout to a minimum of 30 seconds. Warn the
962 user if lower values are given in the configuration. Bugfix on
963 0.1.1.17-rc. Patch by Sebastian.
964 - Fix a memory leak when we decline to add a v2 rendezvous descriptor to
965 the cache because we already had a v0 descriptor with the same ID.
966 Bugfix on 0.2.0.18-alpha.
967 - Fix a race condition when freeing keys shared between main thread
968 and CPU workers that could result in a memory leak. Bugfix on
969 0.1.0.1-rc. Fixes bug 889.
970 - Send a valid END cell back when a client tries to connect to a
971 nonexistent hidden service port. Bugfix on 0.1.2.15. Fixes bug
972 840. Patch from rovv.
973 - Check which hops rendezvous stream cells are associated with to
974 prevent possible guess-the-streamid injection attacks from
975 intermediate hops. Fixes another case of bug 446. Based on patch
977 - If a broken client asks a non-exit router to connect somewhere,
978 do not even do the DNS lookup before rejecting the connection.
979 Fixes another case of bug 619. Patch from rovv.
980 - When a relay gets a create cell it can't decrypt (e.g. because it's
981 using the wrong onion key), we were dropping it and letting the
982 client time out. Now actually answer with a destroy cell. Fixes
983 bug 904. Bugfix on 0.0.2pre8.
985 o Minor bugfixes (hidden services):
986 - Do not throw away existing introduction points on SIGHUP. Bugfix on
987 0.0.6pre1. Patch by Karsten. Fixes bug 874.
990 - Report the case where all signatures in a detached set are rejected
991 differently than the case where there is an error handling the
993 - When we realize that another process has modified our cached
994 descriptors, print out a more useful error message rather than
995 triggering an assertion. Fixes bug 885. Patch from Karsten.
996 - Implement the 0x20 hack to better resist DNS poisoning: set the
997 case on outgoing DNS requests randomly, and reject responses that do
998 not match the case correctly. This logic can be disabled with the
999 ServerDNSRamdomizeCase setting, if you are using one of the 0.3%
1000 of servers that do not reliably preserve case in replies. See
1001 "Increased DNS Forgery Resistance through 0x20-Bit Encoding"
1003 - Check DNS replies for more matching fields to better resist DNS
1005 - Never use OpenSSL compression: it wastes RAM and CPU trying to
1006 compress cells, which are basically all encrypted, compressed, or
1010 Changes in version 0.2.1.11-alpha - 2009-01-20
1011 Tor 0.2.1.11-alpha finishes fixing the "if your Tor is off for a
1012 week it will take a long time to bootstrap again" bug. It also fixes
1013 an important security-related bug reported by Ilja van Sprundel. You
1014 should upgrade. (We'll send out more details about the bug once people
1015 have had some time to upgrade.)
1018 - Fix a heap-corruption bug that may be remotely triggerable on
1019 some platforms. Reported by Ilja van Sprundel.
1022 - Discard router descriptors as we load them if they are more than
1023 five days old. Otherwise if Tor is off for a long time and then
1024 starts with cached descriptors, it will try to use the onion
1025 keys in those obsolete descriptors when building circuits. Bugfix
1026 on 0.2.0.x. Fixes bug 887.
1029 - Try to make sure that the version of Libevent we're running with
1030 is binary-compatible with the one we built with. May address bug
1032 - Make setting ServerDNSRandomizeCase to 0 actually work. Bugfix
1033 for bug 905. Bugfix on 0.2.1.7-alpha.
1034 - Add a new --enable-local-appdata configuration switch to change
1035 the default location of the datadir on win32 from APPDATA to
1036 LOCAL_APPDATA. In the future, we should migrate to LOCAL_APPDATA
1037 entirely. Patch from coderman.
1040 - Make outbound DNS packets respect the OutboundBindAddress setting.
1041 Fixes the bug part of bug 798. Bugfix on 0.1.2.2-alpha.
1042 - When our circuit fails at the first hop (e.g. we get a destroy
1043 cell back), avoid using that OR connection anymore, and also
1044 tell all the one-hop directory requests waiting for it that they
1045 should fail. Bugfix on 0.2.1.3-alpha.
1046 - In the torify(1) manpage, mention that tsocks will leak your
1050 Changes in version 0.2.1.10-alpha - 2009-01-06
1051 Tor 0.2.1.10-alpha fixes two major bugs in bridge relays (one that
1052 would make the bridge relay not so useful if it had DirPort set to 0,
1053 and one that could let an attacker learn a little bit of information
1054 about the bridge's users), and a bug that would cause your Tor relay
1055 to ignore a circuit create request it can't decrypt (rather than reply
1056 with an error). It also fixes a wide variety of other bugs.
1059 - If the cached networkstatus consensus is more than five days old,
1060 discard it rather than trying to use it. In theory it could
1061 be useful because it lists alternate directory mirrors, but in
1062 practice it just means we spend many minutes trying directory
1063 mirrors that are long gone from the network. Helps bug 887 a bit;
1065 - Bridge relays that had DirPort set to 0 would stop fetching
1066 descriptors shortly after startup, and then briefly resume
1067 after a new bandwidth test and/or after publishing a new bridge
1068 descriptor. Bridge users that try to bootstrap from them would
1069 get a recent networkstatus but would get descriptors from up to
1070 18 hours earlier, meaning most of the descriptors were obsolete
1071 already. Reported by Tas; bugfix on 0.2.0.13-alpha.
1072 - Prevent bridge relays from serving their 'extrainfo' document
1073 to anybody who asks, now that extrainfo docs include potentially
1074 sensitive aggregated client geoip summaries. Bugfix on
1078 - New controller event "clients_seen" to report a geoip-based summary
1079 of which countries we've seen clients from recently. Now controllers
1080 like Vidalia can show bridge operators that they're actually making
1082 - Build correctly against versions of OpenSSL 0.9.8 or later built
1083 without support for deprecated functions.
1084 - Update to the "December 19 2008" ip-to-country file.
1086 o Minor bugfixes (on 0.2.0.x):
1087 - Authorities now vote for the Stable flag for any router whose
1088 weighted MTBF is at least 5 days, regardless of the mean MTBF.
1089 - Do not remove routers as too old if we do not have any consensus
1090 document. Bugfix on 0.2.0.7-alpha.
1091 - Do not accept incomplete ipv4 addresses (like 192.168.0) as valid.
1092 Spec conformance issue. Bugfix on Tor 0.0.2pre27.
1093 - When an exit relay resolves a stream address to a local IP address,
1094 do not just keep retrying that same exit relay over and
1095 over. Instead, just close the stream. Addresses bug 872. Bugfix
1096 on 0.2.0.32. Patch from rovv.
1097 - If a hidden service sends us an END cell, do not consider
1098 retrying the connection; just close it. Patch from rovv.
1099 - When we made bridge authorities stop serving bridge descriptors over
1100 unencrypted links, we also broke DirPort reachability testing for
1101 bridges. So bridges with a non-zero DirPort were printing spurious
1102 warns to their logs. Bugfix on 0.2.0.16-alpha. Fixes bug 709.
1103 - When a relay gets a create cell it can't decrypt (e.g. because it's
1104 using the wrong onion key), we were dropping it and letting the
1105 client time out. Now actually answer with a destroy cell. Fixes
1106 bug 904. Bugfix on 0.0.2pre8.
1107 - Squeeze 2-5% out of client performance (according to oprofile) by
1108 improving the implementation of some policy-manipulation functions.
1110 o Minor bugfixes (on 0.2.1.x):
1111 - Make get_interface_address() function work properly again; stop
1112 guessing the wrong parts of our address as our address.
1113 - Do not cannibalize a circuit if we're out of RELAY_EARLY cells to
1114 send on that circuit. Otherwise we might violate the proposal-110
1115 limit. Bugfix on 0.2.1.3-alpha. Partial fix for bug 878. Diagnosis
1117 - When we're sending non-EXTEND cells to the first hop in a circuit,
1118 for example to use an encrypted directory connection, we don't need
1119 to use RELAY_EARLY cells: the first hop knows what kind of cell
1120 it is, and nobody else can even see the cell type. Conserving
1121 RELAY_EARLY cells makes it easier to cannibalize circuits like
1123 - Stop logging nameserver addresses in reverse order.
1124 - If we are retrying a directory download slowly over and over, do
1125 not automatically give up after the 254th failure. Bugfix on
1127 - Resume reporting accurate "stream end" reasons to the local control
1128 port. They were lost in the changes for Proposal 148. Bugfix on
1131 o Deprecated and removed features:
1132 - The old "tor --version --version" command, which would print out
1133 the subversion "Id" of most of the source files, is now removed. It
1134 turned out to be less useful than we'd expected, and harder to
1137 o Code simplifications and refactoring:
1138 - Change our header file guard macros to be less likely to conflict
1139 with system headers. Adam Langley noticed that we were conflicting
1140 with log.h on Android.
1141 - Tool-assisted documentation cleanup. Nearly every function or
1142 static variable in Tor should have its own documentation now.
1145 Changes in version 0.2.1.9-alpha - 2008-12-25
1146 Tor 0.2.1.9-alpha fixes many more bugs, some of them security-related.
1148 o New directory authorities:
1149 - gabelmoo (the authority run by Karsten Loesing) now has a new
1153 - Never use a connection with a mismatched address to extend a
1154 circuit, unless that connection is canonical. A canonical
1155 connection is one whose address is authenticated by the router's
1156 identity key, either in a NETINFO cell or in a router descriptor.
1157 - Avoid a possible memory corruption bug when receiving hidden service
1158 descriptors. Bugfix on 0.2.1.6-alpha.
1161 - Fix a logic error that would automatically reject all but the first
1162 configured DNS server. Bugfix on 0.2.1.5-alpha. Possible fix for
1163 part of bug 813/868. Bug spotted by coderman.
1164 - When a stream at an exit relay is in state "resolving" or
1165 "connecting" and it receives an "end" relay cell, the exit relay
1166 would silently ignore the end cell and not close the stream. If
1167 the client never closes the circuit, then the exit relay never
1168 closes the TCP connection. Bug introduced in 0.1.2.1-alpha;
1170 - When we can't initialize DNS because the network is down, do not
1171 automatically stop Tor from starting. Instead, retry failed
1172 dns_init() every 10 minutes, and change the exit policy to reject
1173 *:* until one succeeds. Fixes bug 691.
1176 - Give a better error message when an overzealous init script says
1177 "sudo -u username tor --user username". Makes Bug 882 easier for
1179 - When a directory authority gives us a new guess for our IP address,
1180 log which authority we used. Hopefully this will help us debug
1181 the recent complaints about bad IP address guesses.
1182 - Detect svn revision properly when we're using git-svn.
1183 - Try not to open more than one descriptor-downloading connection
1184 to an authority at once. This should reduce load on directory
1185 authorities. Fixes bug 366.
1186 - Add cross-certification to newly generated certificates, so that
1187 a signing key is enough information to look up a certificate.
1188 Partial implementation of proposal 157.
1189 - Start serving certificates by <identity digest, signing key digest>
1190 pairs. Partial implementation of proposal 157.
1191 - Clients now never report any stream end reason except 'MISC'.
1192 Implements proposal 148.
1193 - On platforms with a maximum syslog string length, truncate syslog
1194 messages to that length ourselves, rather than relying on the
1195 system to do it for us.
1196 - Optimize out calls to time(NULL) that occur for every IO operation,
1197 or for every cell. On systems where time() is a slow syscall,
1198 this fix will be slightly helpful.
1199 - Exit servers can now answer resolve requests for ip6.arpa addresses.
1200 - When we download a descriptor that we then immediately (as
1201 a directory authority) reject, do not retry downloading it right
1202 away. Should save some bandwidth on authorities. Fix for bug
1203 888. Patch by Sebastian Hahn.
1204 - When a download gets us zero good descriptors, do not notify
1205 Tor that new directory information has arrived.
1206 - Avoid some nasty corner cases in the logic for marking connections
1207 as too old or obsolete or noncanonical for circuits. Partial
1210 o Minor features (controller):
1211 - New CONSENSUS_ARRIVED event to note when a new consensus has
1212 been fetched and validated.
1213 - When we realize that another process has modified our cached
1214 descriptors file, print out a more useful error message rather
1215 than triggering an assertion. Fixes bug 885. Patch from Karsten.
1216 - Add an internal-use-only __ReloadTorrcOnSIGHUP option for
1217 controllers to prevent SIGHUP from reloading the
1218 configuration. Fixes bug 856.
1221 - Resume using the correct "REASON=" stream when telling the
1222 controller why we closed a stream. Bugfix in 0.2.1.1-alpha.
1223 - When a canonical connection appears later in our internal list
1224 than a noncanonical one for a given OR ID, always use the
1225 canonical one. Bugfix on 0.2.0.12-alpha. Fixes bug 805.
1227 - Clip the MaxCircuitDirtiness config option to a minimum of 10
1228 seconds. Warn the user if lower values are given in the
1229 configuration. Bugfix on 0.1.0.1-rc. Patch by Sebastian.
1230 - Clip the CircuitBuildTimeout to a minimum of 30 seconds. Warn the
1231 user if lower values are given in the configuration. Bugfix on
1232 0.1.1.17-rc. Patch by Sebastian.
1233 - Fix a race condition when freeing keys shared between main thread
1234 and CPU workers that could result in a memory leak. Bugfix on
1235 0.1.0.1-rc. Fixes bug 889.
1237 o Minor bugfixes (hidden services):
1238 - Do not throw away existing introduction points on SIGHUP (bugfix on
1239 0.0.6pre1); also, do not stall hidden services because we're
1240 throwing away introduction points; bugfix on 0.2.1.7-alpha. Spotted
1241 by John Brooks. Patch by Karsten. Fixes bug 874.
1242 - Fix a memory leak when we decline to add a v2 rendezvous
1243 descriptor to the cache because we already had a v0 descriptor
1244 with the same ID. Bugfix on 0.2.0.18-alpha.
1246 o Deprecated and removed features:
1247 - RedirectExits has been removed. It was deprecated since
1249 - Finally remove deprecated "EXTENDED_FORMAT" controller feature. It
1250 has been called EXTENDED_EVENTS since 0.1.2.4-alpha.
1251 - Cell pools are now always enabled; --disable-cell-pools is ignored.
1253 o Code simplifications and refactoring:
1254 - Rename the confusing or_is_obsolete field to the more appropriate
1255 is_bad_for_new_circs, and move it to or_connection_t where it
1257 - Move edge-only flags from connection_t to edge_connection_t: not
1258 only is this better coding, but on machines of plausible alignment,
1259 it should save 4-8 bytes per connection_t. "Every little bit helps."
1260 - Rename ServerDNSAllowBrokenResolvConf to ServerDNSAllowBrokenConfig
1261 for consistency; keep old option working for backward compatibility.
1262 - Simplify the code for finding connections to use for a circuit.
1265 Changes in version 0.2.1.8-alpha - 2008-12-08
1266 Tor 0.2.1.8-alpha fixes some crash bugs in earlier alpha releases,
1267 builds better on unusual platforms like Solaris and old OS X, and
1268 fixes a variety of other issues.
1271 - New DirPortFrontPage option that takes an html file and publishes
1272 it as "/" on the DirPort. Now relay operators can provide a
1273 disclaimer without needing to set up a separate webserver. There's
1274 a sample disclaimer in contrib/tor-exit-notice.html.
1277 - When the client is choosing entry guards, now it selects at most
1278 one guard from a given relay family. Otherwise we could end up with
1279 all of our entry points into the network run by the same operator.
1280 Suggested by Camilo Viecco. Fix on 0.1.1.11-alpha.
1283 - Fix a DOS opportunity during the voting signature collection process
1284 at directory authorities. Spotted by rovv. Bugfix on 0.2.0.x.
1285 - Fix a possible segfault when establishing an exit connection. Bugfix
1289 - Get file locking working on win32. Bugfix on 0.2.1.6-alpha. Fixes
1291 - Made Tor a little less aggressive about deleting expired
1292 certificates. Partial fix for bug 854.
1293 - Stop doing unaligned memory access that generated bus errors on
1294 sparc64. Bugfix on 0.2.0.10-alpha. Fix for bug 862.
1295 - Fix a crash bug when changing EntryNodes from the controller. Bugfix
1296 on 0.2.1.6-alpha. Fix for bug 867. Patched by Sebastian.
1297 - Make USR2 log-level switch take effect immediately. Bugfix on
1299 - If one win32 nameserver fails to get added, continue adding the
1300 rest, and don't automatically fail.
1301 - Use fcntl() for locking when flock() is not available. Should fix
1302 compilation on Solaris. Should fix Bug 873. Bugfix on 0.2.1.6-alpha.
1303 - Do not mark smartlist_bsearch_idx() function as ATTR_PURE. This bug
1304 could make gcc generate non-functional binary search code. Bugfix
1306 - Build correctly on platforms without socklen_t.
1307 - Avoid potential crash on internal error during signature collection.
1308 Fixes bug 864. Patch from rovv.
1309 - Do not use C's stdio library for writing to log files. This will
1310 improve logging performance by a minute amount, and will stop
1311 leaking fds when our disk is full. Fixes bug 861.
1312 - Stop erroneous use of O_APPEND in cases where we did not in fact
1313 want to re-seek to the end of a file before every last write().
1314 - Correct handling of possible malformed authority signing key
1315 certificates with internal signature types. Fixes bug 880. Bugfix
1317 - Fix a hard-to-trigger resource leak when logging credential status.
1321 - Directory mirrors no longer fetch the v1 directory or
1322 running-routers files. They are obsolete, and nobody asks for them
1323 anymore. This is the first step to making v1 authorities obsolete.
1325 o Minor features (controller):
1326 - Return circuit purposes in response to GETINFO circuit-status. Fixes
1330 Changes in version 0.2.0.32 - 2008-11-20
1331 Tor 0.2.0.32 fixes a major security problem in Debian and Ubuntu
1332 packages (and maybe other packages) noticed by Theo de Raadt, fixes
1333 a smaller security flaw that might allow an attacker to access local
1334 services, further improves hidden service performance, and fixes a
1335 variety of other issues.
1338 - The "User" and "Group" config options did not clear the
1339 supplementary group entries for the Tor process. The "User" option
1340 is now more robust, and we now set the groups to the specified
1341 user's primary group. The "Group" option is now ignored. For more
1342 detailed logging on credential switching, set CREDENTIAL_LOG_LEVEL
1343 in common/compat.c to LOG_NOTICE or higher. Patch by Jacob Appelbaum
1344 and Steven Murdoch. Bugfix on 0.0.2pre14. Fixes bug 848 and 857.
1345 - The "ClientDNSRejectInternalAddresses" config option wasn't being
1346 consistently obeyed: if an exit relay refuses a stream because its
1347 exit policy doesn't allow it, we would remember what IP address
1348 the relay said the destination address resolves to, even if it's
1349 an internal IP address. Bugfix on 0.2.0.7-alpha; patch by rovv.
1352 - Fix a DOS opportunity during the voting signature collection process
1353 at directory authorities. Spotted by rovv. Bugfix on 0.2.0.x.
1355 o Major bugfixes (hidden services):
1356 - When fetching v0 and v2 rendezvous service descriptors in parallel,
1357 we were failing the whole hidden service request when the v0
1358 descriptor fetch fails, even if the v2 fetch is still pending and
1359 might succeed. Similarly, if the last v2 fetch fails, we were
1360 failing the whole hidden service request even if a v0 fetch is
1361 still pending. Fixes bug 814. Bugfix on 0.2.0.10-alpha.
1362 - When extending a circuit to a hidden service directory to upload a
1363 rendezvous descriptor using a BEGIN_DIR cell, almost 1/6 of all
1364 requests failed, because the router descriptor has not been
1365 downloaded yet. In these cases, do not attempt to upload the
1366 rendezvous descriptor, but wait until the router descriptor is
1367 downloaded and retry. Likewise, do not attempt to fetch a rendezvous
1368 descriptor from a hidden service directory for which the router
1369 descriptor has not yet been downloaded. Fixes bug 767. Bugfix
1373 - Fix several infrequent memory leaks spotted by Coverity.
1374 - When testing for libevent functions, set the LDFLAGS variable
1375 correctly. Found by Riastradh.
1376 - Avoid a bug where the FastFirstHopPK 0 option would keep Tor from
1377 bootstrapping with tunneled directory connections. Bugfix on
1378 0.1.2.5-alpha. Fixes bug 797. Found by Erwin Lam.
1379 - When asked to connect to A.B.exit:80, if we don't know the IP for A
1380 and we know that server B rejects most-but-not all connections to
1381 port 80, we would previously reject the connection. Now, we assume
1382 the user knows what they were asking for. Fixes bug 752. Bugfix
1383 on 0.0.9rc5. Diagnosed by BarkerJr.
1384 - If we overrun our per-second write limits a little, count this as
1385 having used up our write allocation for the second, and choke
1386 outgoing directory writes. Previously, we had only counted this when
1387 we had met our limits precisely. Fixes bug 824. Patch from by rovv.
1388 Bugfix on 0.2.0.x (??).
1389 - Remove the old v2 directory authority 'lefkada' from the default
1390 list. It has been gone for many months.
1391 - Stop doing unaligned memory access that generated bus errors on
1392 sparc64. Bugfix on 0.2.0.10-alpha. Fixes bug 862.
1393 - Make USR2 log-level switch take effect immediately. Bugfix on
1396 o Minor bugfixes (controller):
1397 - Make DNS resolved events into "CLOSED", not "FAILED". Bugfix on
1398 0.1.2.5-alpha. Fix by Robert Hogan. Resolves bug 807.
1401 Changes in version 0.2.1.7-alpha - 2008-11-08
1402 Tor 0.2.1.7-alpha fixes a major security problem in Debian and Ubuntu
1403 packages (and maybe other packages) noticed by Theo de Raadt, fixes
1404 a smaller security flaw that might allow an attacker to access local
1405 services, adds better defense against DNS poisoning attacks on exit
1406 relays, further improves hidden service performance, and fixes a
1407 variety of other issues.
1410 - The "ClientDNSRejectInternalAddresses" config option wasn't being
1411 consistently obeyed: if an exit relay refuses a stream because its
1412 exit policy doesn't allow it, we would remember what IP address
1413 the relay said the destination address resolves to, even if it's
1414 an internal IP address. Bugfix on 0.2.0.7-alpha; patch by rovv.
1415 - The "User" and "Group" config options did not clear the
1416 supplementary group entries for the Tor process. The "User" option
1417 is now more robust, and we now set the groups to the specified
1418 user's primary group. The "Group" option is now ignored. For more
1419 detailed logging on credential switching, set CREDENTIAL_LOG_LEVEL
1420 in common/compat.c to LOG_NOTICE or higher. Patch by Jacob Appelbaum
1421 and Steven Murdoch. Bugfix on 0.0.2pre14. Fixes bug 848.
1422 - Do not use or believe expired v3 authority certificates. Patch
1423 from Karsten. Bugfix in 0.2.0.x. Fixes bug 851.
1426 - Now NodeFamily and MyFamily config options allow spaces in
1427 identity fingerprints, so it's easier to paste them in.
1428 Suggested by Lucky Green.
1429 - Implement the 0x20 hack to better resist DNS poisoning: set the
1430 case on outgoing DNS requests randomly, and reject responses that do
1431 not match the case correctly. This logic can be disabled with the
1432 ServerDNSRandomizeCase setting, if you are using one of the 0.3%
1433 of servers that do not reliably preserve case in replies. See
1434 "Increased DNS Forgery Resistance through 0x20-Bit Encoding"
1436 - Preserve case in replies to DNSPort requests in order to support
1437 the 0x20 hack for resisting DNS poisoning attacks.
1439 o Hidden service performance improvements:
1440 - When the client launches an introduction circuit, retry with a
1441 new circuit after 30 seconds rather than 60 seconds.
1442 - Launch a second client-side introduction circuit in parallel
1443 after a delay of 15 seconds (based on work by Christian Wilms).
1444 - Hidden services start out building five intro circuits rather
1445 than three, and when the first three finish they publish a service
1446 descriptor using those. Now we publish our service descriptor much
1447 faster after restart.
1450 - Minor fix in the warning messages when you're having problems
1451 bootstrapping; also, be more forgiving of bootstrap problems when
1452 we're still making incremental progress on a given bootstrap phase.
1453 - When we're choosing an exit node for a circuit, and we have
1454 no pending streams, choose a good general exit rather than one that
1455 supports "all the pending streams". Bugfix on 0.1.1.x. Fix by rovv.
1456 - Send a valid END cell back when a client tries to connect to a
1457 nonexistent hidden service port. Bugfix on 0.1.2.15. Fixes bug
1458 840. Patch from rovv.
1459 - If a broken client asks a non-exit router to connect somewhere,
1460 do not even do the DNS lookup before rejecting the connection.
1461 Fixes another case of bug 619. Patch from rovv.
1462 - Fix another case of assuming, when a specific exit is requested,
1463 that we know more than the user about what hosts it allows.
1464 Fixes another case of bug 752. Patch from rovv.
1465 - Check which hops rendezvous stream cells are associated with to
1466 prevent possible guess-the-streamid injection attacks from
1467 intermediate hops. Fixes another case of bug 446. Based on patch
1469 - Avoid using a negative right-shift when comparing 32-bit
1470 addresses. Possible fix for bug 845 and bug 811.
1471 - Make the assert_circuit_ok() function work correctly on circuits that
1472 have already been marked for close.
1473 - Fix read-off-the-end-of-string error in unit tests when decoding
1474 introduction points.
1475 - Fix uninitialized size field for memory area allocation: may improve
1476 memory performance during directory parsing.
1477 - Treat duplicate certificate fetches as failures, so that we do
1478 not try to re-fetch an expired certificate over and over and over.
1479 - Do not say we're fetching a certificate when we'll in fact skip it
1480 because of a pending download.
1483 Changes in version 0.2.1.6-alpha - 2008-09-30
1484 Tor 0.2.1.6-alpha further improves performance and robustness of
1485 hidden services, starts work on supporting per-country relay selection,
1486 and fixes a variety of smaller issues.
1489 - Implement proposal 121: make it possible to build hidden services
1490 that only certain clients are allowed to connect to. This is
1491 enforced at several points, so that unauthorized clients are unable
1492 to send INTRODUCE cells to the service, or even (depending on the
1493 type of authentication) to learn introduction points. This feature
1494 raises the bar for certain kinds of active attacks against hidden
1495 services. Code by Karsten Loesing.
1496 - Relays now store and serve v2 hidden service descriptors by default,
1497 i.e., the new default value for HidServDirectoryV2 is 1. This is
1498 the last step in proposal 114, which aims to make hidden service
1499 lookups more reliable.
1500 - Start work to allow node restrictions to include country codes. The
1501 syntax to exclude nodes in a country with country code XX is
1502 "ExcludeNodes {XX}". Patch from Robert Hogan. It still needs some
1503 refinement to decide what config options should take priority if
1504 you ask to both use a particular node and exclude it.
1505 - Allow ExitNodes list to include IP ranges and country codes, just
1506 like the Exclude*Nodes lists. Patch from Robert Hogan.
1509 - Fix a bug when parsing ports in tor_addr_port_parse() that caused
1510 Tor to fail to start if you had it configured to use a bridge
1511 relay. Fixes bug 809. Bugfix on 0.2.1.5-alpha.
1512 - When extending a circuit to a hidden service directory to upload a
1513 rendezvous descriptor using a BEGIN_DIR cell, almost 1/6 of all
1514 requests failed, because the router descriptor had not been
1515 downloaded yet. In these cases, we now wait until the router
1516 descriptor is downloaded, and then retry. Likewise, clients
1517 now skip over a hidden service directory if they don't yet have
1518 its router descriptor, rather than futilely requesting it and
1519 putting mysterious complaints in the logs. Fixes bug 767. Bugfix
1521 - When fetching v0 and v2 rendezvous service descriptors in parallel,
1522 we were failing the whole hidden service request when the v0
1523 descriptor fetch fails, even if the v2 fetch is still pending and
1524 might succeed. Similarly, if the last v2 fetch fails, we were
1525 failing the whole hidden service request even if a v0 fetch is
1526 still pending. Fixes bug 814. Bugfix on 0.2.0.10-alpha.
1527 - DNS replies need to have names matching their requests, but
1528 these names should be in the questions section, not necessarily
1529 in the answers section. Fixes bug 823. Bugfix on 0.2.1.5-alpha.
1532 - Update to the "September 1 2008" ip-to-country file.
1533 - Allow ports 465 and 587 in the default exit policy again. We had
1534 rejected them in 0.1.0.15, because back in 2005 they were commonly
1535 misconfigured and ended up as spam targets. We hear they are better
1536 locked down these days.
1537 - Use a lockfile to make sure that two Tor processes are not
1538 simultaneously running with the same datadir.
1539 - Serve the latest v3 networkstatus consensus via the control
1540 port. Use "getinfo dir/status-vote/current/consensus" to fetch it.
1541 - Better logging about stability/reliability calculations on directory
1543 - Drop the requirement to have an open dir port for storing and
1544 serving v2 hidden service descriptors.
1545 - Directory authorities now serve a /tor/dbg-stability.txt URL to
1546 help debug WFU and MTBF calculations.
1547 - Implement most of Proposal 152: allow specialized servers to permit
1548 single-hop circuits, and clients to use those servers to build
1549 single-hop circuits when using a specialized controller. Patch
1550 from Josh Albrecht. Resolves feature request 768.
1551 - Add a -p option to tor-resolve for specifying the SOCKS port: some
1552 people find host:port too confusing.
1553 - Make TrackHostExit mappings expire a while after their last use, not
1554 after their creation. Patch from Robert Hogan.
1555 - Provide circuit purposes along with circuit events to the controller.
1558 - Fix compile on OpenBSD 4.4-current. Bugfix on 0.2.1.5-alpha.
1560 - Fixed some memory leaks -- some quite frequent, some almost
1561 impossible to trigger -- based on results from Coverity.
1562 - When testing for libevent functions, set the LDFLAGS variable
1563 correctly. Found by Riastradh.
1564 - Fix an assertion bug in parsing policy-related options; possible fix
1566 - Catch and report a few more bootstrapping failure cases when Tor
1567 fails to establish a TCP connection. Cleanup on 0.2.1.x.
1568 - Avoid a bug where the FastFirstHopPK 0 option would keep Tor from
1569 bootstrapping with tunneled directory connections. Bugfix on
1570 0.1.2.5-alpha. Fixes bug 797. Found by Erwin Lam.
1571 - When asked to connect to A.B.exit:80, if we don't know the IP for A
1572 and we know that server B rejects most-but-not all connections to
1573 port 80, we would previously reject the connection. Now, we assume
1574 the user knows what they were asking for. Fixes bug 752. Bugfix
1575 on 0.0.9rc5. Diagnosed by BarkerJr.
1576 - If we are not using BEGIN_DIR cells, don't attempt to contact hidden
1577 service directories if they have no advertised dir port. Bugfix
1579 - If we overrun our per-second write limits a little, count this as
1580 having used up our write allocation for the second, and choke
1581 outgoing directory writes. Previously, we had only counted this when
1582 we had met our limits precisely. Fixes bug 824. Patch by rovv.
1583 Bugfix on 0.2.0.x (??).
1584 - Avoid a "0 divided by 0" calculation when calculating router uptime
1585 at directory authorities. Bugfix on 0.2.0.8-alpha.
1586 - Make DNS resolved controller events into "CLOSED", not
1587 "FAILED". Bugfix on 0.1.2.5-alpha. Fix by Robert Hogan. Resolves
1589 - Fix a bug where an unreachable relay would establish enough
1590 reachability testing circuits to do a bandwidth test -- if
1591 we already have a connection to the middle hop of the testing
1592 circuit, then it could establish the last hop by using the existing
1593 connection. Bugfix on 0.1.2.2-alpha, exposed when we made testing
1594 circuits no longer use entry guards in 0.2.1.3-alpha.
1595 - If we have correct permissions on $datadir, we complain to stdout
1596 and fail to start. But dangerous permissions on
1597 $datadir/cached-status/ would cause us to open a log and complain
1598 there. Now complain to stdout and fail to start in both cases. Fixes
1599 bug 820, reported by seeess.
1600 - Remove the old v2 directory authority 'lefkada' from the default
1601 list. It has been gone for many months.
1603 o Code simplifications and refactoring:
1604 - Revise the connection_new functions so that a more typesafe variant
1605 exists. This will work better with Coverity, and let us find any
1606 actual mistakes we're making here.
1607 - Refactor unit testing logic so that dmalloc can be used sensibly
1608 with unit tests to check for memory leaks.
1609 - Move all hidden-service related fields from connection and circuit
1610 structure to substructures: this way they won't eat so much memory.
1613 Changes in version 0.2.0.31 - 2008-09-03
1614 Tor 0.2.0.31 addresses two potential anonymity issues, starts to fix
1615 a big bug we're seeing where in rare cases traffic from one Tor stream
1616 gets mixed into another stream, and fixes a variety of smaller issues.
1619 - Make sure that two circuits can never exist on the same connection
1620 with the same circuit ID, even if one is marked for close. This
1621 is conceivably a bugfix for bug 779. Bugfix on 0.1.0.4-rc.
1622 - Relays now reject risky extend cells: if the extend cell includes
1623 a digest of all zeroes, or asks to extend back to the relay that
1624 sent the extend cell, tear down the circuit. Ideas suggested
1626 - If not enough of our entry guards are available so we add a new
1627 one, we might use the new one even if it overlapped with the
1628 current circuit's exit relay (or its family). Anonymity bugfix
1629 pointed out by rovv.
1632 - Recover 3-7 bytes that were wasted per memory chunk. Fixes bug
1633 794; bug spotted by rovv. Bugfix on 0.2.0.1-alpha.
1634 - Correctly detect the presence of the linux/netfilter_ipv4.h header
1635 when building against recent kernels. Bugfix on 0.1.2.1-alpha.
1636 - Pick size of default geoip filename string correctly on windows.
1637 Fixes bug 806. Bugfix on 0.2.0.30.
1638 - Make the autoconf script accept the obsolete --with-ssl-dir
1639 option as an alias for the actually-working --with-openssl-dir
1640 option. Fix the help documentation to recommend --with-openssl-dir.
1641 Based on a patch by "Dave". Bugfix on 0.2.0.1-alpha.
1642 - When using the TransPort option on OpenBSD, and using the User
1643 option to change UID and drop privileges, make sure to open
1644 /dev/pf before dropping privileges. Fixes bug 782. Patch from
1645 Christopher Davis. Bugfix on 0.1.2.1-alpha.
1646 - Try to attach connections immediately upon receiving a RENDEZVOUS2
1647 or RENDEZVOUS_ESTABLISHED cell. This can save a second or two
1648 on the client side when connecting to a hidden service. Bugfix
1649 on 0.0.6pre1. Found and fixed by Christian Wilms; resolves bug 743.
1650 - When closing an application-side connection because its circuit is
1651 getting torn down, generate the stream event correctly. Bugfix on
1652 0.1.2.x. Anonymous patch.
1655 Changes in version 0.2.1.5-alpha - 2008-08-31
1656 Tor 0.2.1.5-alpha moves us closer to handling IPv6 destinations, puts
1657 in a lot of the infrastructure for adding authorization to hidden
1658 services, lays the groundwork for having clients read their load
1659 balancing information out of the networkstatus consensus rather than
1660 the individual router descriptors, addresses two potential anonymity
1661 issues, and fixes a variety of smaller issues.
1664 - Convert many internal address representations to optionally hold
1666 - Generate and accept IPv6 addresses in many protocol elements.
1667 - Make resolver code handle nameservers located at ipv6 addresses.
1668 - Begin implementation of proposal 121 ("Client authorization for
1669 hidden services"): configure hidden services with client
1670 authorization, publish descriptors for them, and configure
1671 authorization data for hidden services at clients. The next
1672 step is to actually access hidden services that perform client
1674 - More progress toward proposal 141: Network status consensus
1675 documents and votes now contain bandwidth information for each
1676 router and a summary of that router's exit policy. Eventually this
1677 will be used by clients so that they do not have to download every
1678 known descriptor before building circuits.
1680 o Major bugfixes (on 0.2.0.x and before):
1681 - When sending CREATED cells back for a given circuit, use a 64-bit
1682 connection ID to find the right connection, rather than an addr:port
1683 combination. Now that we can have multiple OR connections between
1684 the same ORs, it is no longer possible to use addr:port to uniquely
1685 identify a connection.
1686 - Relays now reject risky extend cells: if the extend cell includes
1687 a digest of all zeroes, or asks to extend back to the relay that
1688 sent the extend cell, tear down the circuit. Ideas suggested
1690 - If not enough of our entry guards are available so we add a new
1691 one, we might use the new one even if it overlapped with the
1692 current circuit's exit relay (or its family). Anonymity bugfix
1693 pointed out by rovv.
1696 - Recover 3-7 bytes that were wasted per memory chunk. Fixes bug
1697 794; bug spotted by rovv. Bugfix on 0.2.0.1-alpha.
1698 - When using the TransPort option on OpenBSD, and using the User
1699 option to change UID and drop privileges, make sure to open /dev/pf
1700 before dropping privileges. Fixes bug 782. Patch from Christopher
1701 Davis. Bugfix on 0.1.2.1-alpha.
1702 - Correctly detect the presence of the linux/netfilter_ipv4.h header
1703 when building against recent kernels. Bugfix on 0.1.2.1-alpha.
1704 - Add a missing safe_str() call for a debug log message.
1705 - Use 64 bits instead of 32 bits for connection identifiers used with
1706 the controller protocol, to greatly reduce risk of identifier reuse.
1707 - Make the autoconf script accept the obsolete --with-ssl-dir
1708 option as an alias for the actually-working --with-openssl-dir
1709 option. Fix the help documentation to recommend --with-openssl-dir.
1710 Based on a patch by "Dave". Bugfix on 0.2.0.1-alpha.
1713 - Rate-limit too-many-sockets messages: when they happen, they happen
1714 a lot. Resolves bug 748.
1715 - Resist DNS poisoning a little better by making sure that names in
1716 answer sections match.
1717 - Print the SOCKS5 error message string as well as the error code
1718 when a tor-resolve request fails. Patch from Jacob.
1721 Changes in version 0.2.1.4-alpha - 2008-08-04
1722 Tor 0.2.1.4-alpha fixes a pair of crash bugs in 0.2.1.3-alpha.
1725 - The address part of exit policies was not correctly written
1726 to router descriptors. This generated router descriptors that failed
1727 their self-checks. Noticed by phobos, fixed by Karsten. Bugfix
1729 - Tor triggered a false assert when extending a circuit to a relay
1730 but we already have a connection open to that relay. Noticed by
1731 phobos, fixed by Karsten. Bugfix on 0.2.1.3-alpha.
1734 - Fix a hidden service logging bug: in some edge cases, the router
1735 descriptor of a previously picked introduction point becomes
1736 obsolete and we need to give up on it rather than continually
1737 complaining that it has become obsolete. Observed by xiando. Bugfix
1741 - Take out the TestVia config option, since it was a workaround for
1742 a bug that was fixed in Tor 0.1.1.21.
1745 Changes in version 0.2.1.3-alpha - 2008-08-03
1746 Tor 0.2.1.3-alpha implements most of the pieces to prevent
1747 infinite-length circuit attacks (see proposal 110); fixes a bug that
1748 might cause exit relays to corrupt streams they send back; allows
1749 address patterns (e.g. 255.128.0.0/16) to appear in ExcludeNodes and
1750 ExcludeExitNodes config options; and fixes a big pile of bugs.
1752 o Bootstrapping bugfixes (on 0.2.1.x-alpha):
1753 - Send a bootstrap problem "warn" event on the first problem if the
1754 reason is NO_ROUTE (that is, our network is down).
1757 - Implement most of proposal 110: The first K cells to be sent
1758 along a circuit are marked as special "early" cells; only K "early"
1759 cells will be allowed. Once this code is universal, we can block
1760 certain kinds of DOS attack by requiring that EXTEND commands must
1761 be sent using an "early" cell.
1764 - Try to attach connections immediately upon receiving a RENDEZVOUS2
1765 or RENDEZVOUS_ESTABLISHED cell. This can save a second or two
1766 on the client side when connecting to a hidden service. Bugfix
1767 on 0.0.6pre1. Found and fixed by Christian Wilms; resolves bug 743.
1768 - Ensure that two circuits can never exist on the same connection
1769 with the same circuit ID, even if one is marked for close. This
1770 is conceivably a bugfix for bug 779; fixes a bug on 0.1.0.4-rc.
1773 - When relays do their initial bandwidth measurement, don't limit
1774 to just our entry guards for the test circuits. Otherwise we tend
1775 to have multiple test circuits going through a single entry guard,
1776 which makes our bandwidth test less accurate. Fixes part of bug 654;
1777 patch contributed by Josh Albrecht.
1778 - Add an ExcludeExitNodes option so users can list a set of nodes
1779 that should be be excluded from the exit node position, but
1780 allowed elsewhere. Implements proposal 151.
1781 - Allow address patterns (e.g., 255.128.0.0/16) to appear in
1782 ExcludeNodes and ExcludeExitNodes lists.
1783 - Change the implementation of ExcludeNodes and ExcludeExitNodes to
1784 be more efficient. Formerly it was quadratic in the number of
1785 servers; now it should be linear. Fixes bug 509.
1786 - Save 16-22 bytes per open circuit by moving the n_addr, n_port,
1787 and n_conn_id_digest fields into a separate structure that's
1788 only needed when the circuit has not yet attached to an n_conn.
1791 - Change the contrib/tor.logrotate script so it makes the new
1792 logs as "_tor:_tor" rather than the default, which is generally
1793 "root:wheel". Fixes bug 676, reported by Serge Koksharov.
1794 - Stop using __attribute__((nonnull)) with GCC: it can give us useful
1795 warnings (occasionally), but it can also cause the compiler to
1796 eliminate error-checking code. Suggested by Peter Gutmann.
1797 - When a hidden service is giving up on an introduction point candidate
1798 that was not included in the last published rendezvous descriptor,
1799 don't reschedule publication of the next descriptor. Fixes bug 763.
1801 - Mark RendNodes, RendExcludeNodes, HiddenServiceNodes, and
1802 HiddenServiceExcludeNodes as obsolete: they never worked properly,
1803 and nobody claims to be using them. Fixes bug 754. Bugfix on
1804 0.1.0.1-rc. Patch from Christian Wilms.
1805 - Fix a small alignment and memory-wasting bug on buffer chunks.
1808 o Minor bugfixes (controller):
1809 - When closing an application-side connection because its circuit
1810 is getting torn down, generate the stream event correctly.
1811 Bugfix on 0.1.2.x. Anonymous patch.
1814 - Remove all backward-compatibility code to support relays running
1815 versions of Tor so old that they no longer work at all on the
1819 Changes in version 0.2.0.30 - 2008-07-15
1821 - Stop using __attribute__((nonnull)) with GCC: it can give us useful
1822 warnings (occasionally), but it can also cause the compiler to
1823 eliminate error-checking code. Suggested by Peter Gutmann.
1826 Changes in version 0.2.0.29-rc - 2008-07-08
1827 Tor 0.2.0.29-rc fixes two big bugs with using bridges, fixes more
1828 hidden-service performance bugs, and fixes a bunch of smaller bugs.
1831 - If you have more than one bridge but don't know their keys,
1832 you would only launch a request for the descriptor of the first one
1833 on your list. (Tor considered launching requests for the others, but
1834 found that it already had a connection on the way for $0000...0000
1835 so it didn't open another.) Bugfix on 0.2.0.x.
1836 - If you have more than one bridge but don't know their keys, and the
1837 connection to one of the bridges failed, you would cancel all
1838 pending bridge connections. (After all, they all have the same
1839 digest.) Bugfix on 0.2.0.x.
1840 - When a hidden service was trying to establish an introduction point,
1841 and Tor had built circuits preemptively for such purposes, we
1842 were ignoring all the preemptive circuits and launching a new one
1843 instead. Bugfix on 0.2.0.14-alpha.
1844 - When a hidden service was trying to establish an introduction point,
1845 and Tor *did* manage to reuse one of the preemptively built
1846 circuits, it didn't correctly remember which one it used,
1847 so it asked for another one soon after, until there were no
1848 more preemptive circuits, at which point it launched one from
1849 scratch. Bugfix on 0.0.9.x.
1850 - Make directory servers include the X-Your-Address-Is: http header in
1851 their responses even for begin_dir conns. Now clients who only
1852 ever use begin_dir connections still have a way to learn their IP
1853 address. Fixes bug 737; bugfix on 0.2.0.22-rc. Reported by goldy.
1856 - Fix a macro/CPP interaction that was confusing some compilers:
1857 some GCCs don't like #if/#endif pairs inside macro arguments.
1859 - Fix macro collision between OpenSSL 0.9.8h and Windows headers.
1860 Fixes bug 704; fix from Steven Murdoch.
1861 - When opening /dev/null in finish_daemonize(), do not pass the
1862 O_CREAT flag. Fortify was complaining, and correctly so. Fixes
1863 bug 742; fix from Michael Scherer. Bugfix on 0.0.2pre19.
1864 - Correctly detect transparent proxy support on Linux hosts that
1865 require in.h to be included before netfilter_ipv4.h. Patch
1867 - Disallow session resumption attempts during the renegotiation
1868 stage of the v2 handshake protocol. Clients should never be trying
1869 session resumption at this point, but apparently some did, in
1870 ways that caused the handshake to fail. Bugfix on 0.2.0.20-rc. Bug
1871 found by Geoff Goodell.
1874 Changes in version 0.2.1.2-alpha - 2008-06-20
1875 Tor 0.2.1.2-alpha includes a new "TestingTorNetwork" config option to
1876 make it easier to set up your own private Tor network; fixes several
1877 big bugs with using more than one bridge relay; fixes a big bug with
1878 offering hidden services quickly after Tor starts; and uses a better
1879 API for reporting potential bootstrapping problems to the controller.
1882 - New TestingTorNetwork config option to allow adjustment of
1883 previously constant values that, while reasonable, could slow
1884 bootstrapping. Implements proposal 135. Patch from Karsten.
1887 - If you have more than one bridge but don't know their digests,
1888 you would only learn a request for the descriptor of the first one
1889 on your list. (Tor considered launching requests for the others, but
1890 found that it already had a connection on the way for $0000...0000
1891 so it didn't open another.) Bugfix on 0.2.0.x.
1892 - If you have more than one bridge but don't know their digests,
1893 and the connection to one of the bridges failed, you would cancel
1894 all pending bridge connections. (After all, they all have the
1895 same digest.) Bugfix on 0.2.0.x.
1896 - When establishing a hidden service, introduction points that
1897 originate from cannibalized circuits are completely ignored and not
1898 included in rendezvous service descriptors. This might be another
1899 reason for delay in making a hidden service available. Bugfix
1900 from long ago (0.0.9.x?)
1903 - Allow OpenSSL to use dynamic locks if it wants.
1904 - When building a consensus, do not include routers that are down.
1905 This will cut down 30% to 40% on consensus size. Implements
1907 - In directory authorities' approved-routers files, allow
1908 fingerprints with or without space.
1909 - Add a "GETINFO /status/bootstrap-phase" controller option, so the
1910 controller can query our current bootstrap state in case it attaches
1911 partway through and wants to catch up.
1912 - Send an initial "Starting" bootstrap status event, so we have a
1913 state to start out in.
1916 - Asking for a conditional consensus at .../consensus/<fingerprints>
1917 would crash a dirserver if it did not already have a
1918 consensus. Bugfix on 0.2.1.1-alpha.
1919 - Clean up some macro/CPP interactions: some GCC versions don't like
1920 #if/#endif pairs inside macro arguments. Fixes bug 707. Bugfix on
1923 o Bootstrapping bugfixes (on 0.2.1.1-alpha):
1924 - Directory authorities shouldn't complain about bootstrapping
1925 problems just because they do a lot of reachability testing and
1926 some of the connection attempts fail.
1927 - Start sending "count" and "recommendation" key/value pairs in
1928 bootstrap problem status events, so the controller can hear about
1929 problems even before Tor decides they're worth reporting for sure.
1930 - If you're using bridges, generate "bootstrap problem" warnings
1931 as soon as you run out of working bridges, rather than waiting
1932 for ten failures -- which will never happen if you have less than
1934 - If we close our OR connection because there's been a circuit
1935 pending on it for too long, we were telling our bootstrap status
1936 events "REASON=NONE". Now tell them "REASON=TIMEOUT".
1939 Changes in version 0.2.1.1-alpha - 2008-06-13
1940 Tor 0.2.1.1-alpha fixes a lot of memory fragmentation problems that
1941 were making the Tor process bloat especially on Linux; makes our TLS
1942 handshake blend in better; sends "bootstrap phase" status events to
1943 the controller, so it can keep the user informed of progress (and
1944 problems) fetching directory information and establishing circuits;
1945 and adds a variety of smaller features.
1948 - More work on making our TLS handshake blend in: modify the list
1949 of ciphers advertised by OpenSSL in client mode to even more
1950 closely resemble a common web browser. We cheat a little so that
1951 we can advertise ciphers that the locally installed OpenSSL doesn't
1953 - Start sending "bootstrap phase" status events to the controller,
1954 so it can keep the user informed of progress fetching directory
1955 information and establishing circuits. Also inform the controller
1956 if we think we're stuck at a particular bootstrap phase. Implements
1958 - Resume using OpenSSL's RAND_poll() for better (and more portable)
1959 cross-platform entropy collection again. We used to use it, then
1960 stopped using it because of a bug that could crash systems that
1961 called RAND_poll when they had a lot of fds open. It looks like the
1962 bug got fixed in late 2006. Our new behavior is to call RAND_poll()
1963 at startup, and to call RAND_poll() when we reseed later only if
1964 we have a non-buggy OpenSSL version.
1967 - When we choose to abandon a new entry guard because we think our
1968 older ones might be better, close any circuits pending on that
1969 new entry guard connection. This fix should make us recover much
1970 faster when our network is down and then comes back. Bugfix on
1971 0.1.2.8-beta; found by lodger.
1973 o Memory fixes and improvements:
1974 - Add a malloc_good_size implementation to OpenBSD_malloc_linux.c,
1975 to avoid unused RAM in buffer chunks and memory pools.
1976 - Speed up parsing and cut down on memory fragmentation by using
1977 stack-style allocations for parsing directory objects. Previously,
1978 this accounted for over 40% of allocations from within Tor's code
1979 on a typical directory cache.
1980 - Use a Bloom filter rather than a digest-based set to track which
1981 descriptors we need to keep around when we're cleaning out old
1982 router descriptors. This speeds up the computation significantly,
1983 and may reduce fragmentation.
1984 - Reduce the default smartlist size from 32 to 16; it turns out that
1985 most smartlists hold around 8-12 elements tops.
1986 - Make dumpstats() log the fullness and size of openssl-internal
1988 - If the user has applied the experimental SSL_MODE_RELEASE_BUFFERS
1989 patch to their OpenSSL, turn it on to save memory on servers. This
1990 patch will (with any luck) get included in a mainline distribution
1992 - Never use OpenSSL compression: it wastes RAM and CPU trying to
1993 compress cells, which are basically all encrypted, compressed,
1997 - Stop reloading the router list from disk for no reason when we
1998 run out of reachable directory mirrors. Once upon a time reloading
1999 it would set the 'is_running' flag back to 1 for them. It hasn't
2000 done that for a long time.
2001 - In very rare situations new hidden service descriptors were
2002 published earlier than 30 seconds after the last change to the
2003 service. (We currently think that a hidden service descriptor
2004 that's been stable for 30 seconds is worth publishing.)
2007 - Allow separate log levels to be configured for different logging
2008 domains. For example, this allows one to log all notices, warnings,
2009 or errors, plus all memory management messages of level debug or
2010 higher, with: Log [MM] debug-err [*] notice-err file /var/log/tor.
2011 - Add a couple of extra warnings to --enable-gcc-warnings for GCC 4.3,
2012 and stop using a warning that had become unfixably verbose under
2014 - New --hush command-line option similar to --quiet. While --quiet
2015 disables all logging to the console on startup, --hush limits the
2016 output to messages of warning and error severity.
2017 - Servers support a new URL scheme for consensus downloads that
2018 allows the client to specify which authorities are trusted.
2019 The server then only sends the consensus if the client will trust
2020 it. Otherwise a 404 error is sent back. Clients use this
2021 new scheme when the server supports it (meaning it's running
2022 0.2.1.1-alpha or later). Implements proposal 134.
2023 - New configure/torrc options (--enable-geoip-stats,
2024 DirRecordUsageByCountry) to record how many IPs we've served
2025 directory info to in each country code, how many status documents
2026 total we've sent to each country code, and what share of the total
2027 directory requests we should expect to see.
2028 - Use the TLS1 hostname extension to more closely resemble browser
2030 - Lots of new unit tests.
2031 - Add a macro to implement the common pattern of iterating through
2032 two parallel lists in lockstep.
2035 Changes in version 0.2.0.28-rc - 2008-06-13
2036 Tor 0.2.0.28-rc fixes an anonymity-related bug, fixes a hidden-service
2037 performance bug, and fixes a bunch of smaller bugs.
2040 - Fix a bug where, when we were choosing the 'end stream reason' to
2041 put in our relay end cell that we send to the exit relay, Tor
2042 clients on Windows were sometimes sending the wrong 'reason'. The
2043 anonymity problem is that exit relays may be able to guess whether
2044 the client is running Windows, thus helping partition the anonymity
2045 set. Down the road we should stop sending reasons to exit relays,
2046 or otherwise prevent future versions of this bug.
2049 - While setting up a hidden service, some valid introduction circuits
2050 were overlooked and abandoned. This might be the reason for
2051 the long delay in making a hidden service available. Bugfix on
2055 - Update to the "June 9 2008" ip-to-country file.
2056 - Run 'make test' as part of 'make dist', so we stop releasing so
2057 many development snapshots that fail their unit tests.
2060 - When we're checking if we have enough dir info for each relay
2061 to begin establishing circuits, make sure that we actually have
2062 the descriptor listed in the consensus, not just any descriptor.
2064 - Bridge relays no longer print "xx=0" in their extrainfo document
2065 for every single country code in the geoip db. Bugfix on
2067 - Only warn when we fail to load the geoip file if we were planning to
2068 include geoip stats in our extrainfo document. Bugfix on 0.2.0.27-rc.
2069 - If we change our MaxAdvertisedBandwidth and then reload torrc,
2070 Tor won't realize it should publish a new relay descriptor. Fixes
2071 bug 688, reported by mfr. Bugfix on 0.1.2.x.
2072 - When we haven't had any application requests lately, don't bother
2073 logging that we have expired a bunch of descriptors. Bugfix
2075 - Make relay cells written on a connection count as non-padding when
2076 tracking how long a connection has been in use. Bugfix on
2077 0.2.0.1-alpha. Spotted by lodger.
2078 - Fix unit tests in 0.2.0.27-rc.
2079 - Fix compile on Windows.
2082 Changes in version 0.2.0.27-rc - 2008-06-03
2083 Tor 0.2.0.27-rc adds a few features we left out of the earlier
2084 release candidates. In particular, we now include an IP-to-country
2085 GeoIP database, so controllers can easily look up what country a
2086 given relay is in, and so bridge relays can give us some sanitized
2087 summaries about which countries are making use of bridges. (See proposal
2088 126-geoip-fetching.txt for details.)
2091 - Include an IP-to-country GeoIP file in the tarball, so bridge
2092 relays can report sanitized summaries of the usage they're seeing.
2095 - Add a "PURPOSE=" argument to "STREAM NEW" events, as suggested by
2096 Robert Hogan. Fixes the first part of bug 681.
2097 - Make bridge authorities never serve extrainfo docs.
2098 - Add support to detect Libevent versions in the 1.4.x series
2100 - Fix build on gcc 4.3 with --enable-gcc-warnings set.
2101 - Include a new contrib/tor-exit-notice.html file that exit relay
2102 operators can put on their website to help reduce abuse queries.
2105 - When tunneling an encrypted directory connection, and its first
2106 circuit fails, do not leave it unattached and ask the controller
2107 to deal. Fixes the second part of bug 681.
2108 - Make bridge authorities correctly expire old extrainfo documents
2112 Changes in version 0.2.0.26-rc - 2008-05-13
2113 Tor 0.2.0.26-rc fixes a major security vulnerability caused by a bug
2114 in Debian's OpenSSL packages. All users running any 0.2.0.x version
2115 should upgrade, whether they're running Debian or not.
2117 o Major security fixes:
2118 - Use new V3 directory authority keys on the tor26, gabelmoo, and
2119 moria1 V3 directory authorities. The old keys were generated with
2120 a vulnerable version of Debian's OpenSSL package, and must be
2121 considered compromised. Other authorities' keys were not generated
2122 with an affected version of OpenSSL.
2125 - List authority signatures as "unrecognized" based on DirServer
2126 lines, not on cert cache. Bugfix on 0.2.0.x.
2129 - Add a new V3AuthUseLegacyKey option to make it easier for
2130 authorities to change their identity keys if they have to.
2133 Changes in version 0.2.0.25-rc - 2008-04-23
2134 Tor 0.2.0.25-rc makes Tor work again on OS X and certain BSDs.
2137 - Remember to initialize threading before initializing logging.
2138 Otherwise, many BSD-family implementations will crash hard on
2139 startup. Fixes bug 671. Bugfix on 0.2.0.24-rc.
2142 - Authorities correctly free policies on bad servers on
2143 exit. Fixes bug 672. Bugfix on 0.2.0.x.
2146 Changes in version 0.2.0.24-rc - 2008-04-22
2147 Tor 0.2.0.24-rc adds dizum (run by Alex de Joode) as the new sixth
2148 v3 directory authority, makes relays with dynamic IP addresses and no
2149 DirPort notice more quickly when their IP address changes, fixes a few
2150 rare crashes and memory leaks, and fixes a few other miscellaneous bugs.
2152 o New directory authorities:
2153 - Take lefkada out of the list of v3 directory authorities, since
2154 it has been down for months.
2155 - Set up dizum (run by Alex de Joode) as the new sixth v3 directory
2159 - Detect address changes more quickly on non-directory mirror
2160 relays. Bugfix on 0.2.0.18-alpha; fixes bug 652.
2162 o Minor features (security):
2163 - Reject requests for reverse-dns lookup of names that are in
2164 a private address space. Patch from lodger.
2165 - Non-exit relays no longer allow DNS requests. Fixes bug 619. Patch
2168 o Minor bugfixes (crashes):
2169 - Avoid a rare assert that can trigger when Tor doesn't have much
2170 directory information yet and it tries to fetch a v2 hidden
2171 service descriptor. Fixes bug 651, reported by nwf.
2172 - Initialize log mutex before initializing dmalloc. Otherwise,
2173 running with dmalloc would crash. Bugfix on 0.2.0.x-alpha.
2174 - Use recursive pthread mutexes in order to avoid deadlock when
2175 logging debug-level messages to a controller. Bug spotted by nwf,
2176 bugfix on 0.2.0.16-alpha.
2178 o Minor bugfixes (resource management):
2179 - Keep address policies from leaking memory: start their refcount
2180 at 1, not 2. Bugfix on 0.2.0.16-alpha.
2181 - Free authority certificates on exit, so they don't look like memory
2182 leaks. Bugfix on 0.2.0.19-alpha.
2183 - Free static hashtables for policy maps and for TLS connections on
2184 shutdown, so they don't look like memory leaks. Bugfix on 0.2.0.x.
2185 - Avoid allocating extra space when computing consensuses on 64-bit
2186 platforms. Bug spotted by aakova.
2188 o Minor bugfixes (misc):
2189 - Do not read the configuration file when we've only been told to
2190 generate a password hash. Fixes bug 643. Bugfix on 0.0.9pre5. Fix
2191 based on patch from Sebastian Hahn.
2192 - Exit relays that are used as a client can now reach themselves
2193 using the .exit notation, rather than just launching an infinite
2194 pile of circuits. Fixes bug 641. Reported by Sebastian Hahn.
2195 - When attempting to open a logfile fails, tell us why.
2196 - Fix a dumb bug that was preventing us from knowing that we should
2197 preemptively build circuits to handle expected directory requests.
2198 Fixes bug 660. Bugfix on 0.1.2.x.
2199 - Warn less verbosely about clock skew from netinfo cells from
2200 untrusted sources. Fixes bug 663.
2201 - Make controller stream events for DNS requests more consistent,
2202 by adding "new stream" events for DNS requests, and removing
2203 spurious "stream closed" events" for cached reverse resolves.
2204 Patch from mwenge. Fixes bug 646.
2205 - Correctly notify one-hop connections when a circuit build has
2206 failed. Possible fix for bug 669. Found by lodger.
2209 Changes in version 0.2.0.23-rc - 2008-03-24
2210 Tor 0.2.0.23-rc is the fourth release candidate for the 0.2.0 series. It
2211 makes bootstrapping faster if the first directory mirror you contact
2212 is down. The bundles also include the new Vidalia 0.1.2 release.
2215 - When a tunneled directory request is made to a directory server
2216 that's down, notice after 30 seconds rather than 120 seconds. Also,
2217 fail any begindir streams that are pending on it, so they can
2218 retry elsewhere. This was causing multi-minute delays on bootstrap.
2221 Changes in version 0.2.0.22-rc - 2008-03-18
2222 Tor 0.2.0.22-rc is the third release candidate for the 0.2.0 series. It
2223 enables encrypted directory connections by default for non-relays, fixes
2224 some broken TLS behavior we added in 0.2.0.20-rc, and resolves many
2225 other bugs. The bundles also include Vidalia 0.1.1 and Torbutton 1.1.17.
2228 - Enable encrypted directory connections by default for non-relays,
2229 so censor tools that block Tor directory connections based on their
2230 plaintext patterns will no longer work. This means Tor works in
2231 certain censored countries by default again.
2234 - Make sure servers always request certificates from clients during
2235 TLS renegotiation. Reported by lodger; bugfix on 0.2.0.20-rc.
2236 - Do not enter a CPU-eating loop when a connection is closed in
2237 the middle of client-side TLS renegotiation. Fixes bug 622. Bug
2238 diagnosed by lodger; bugfix on 0.2.0.20-rc.
2239 - Fix assertion failure that could occur when a blocked circuit
2240 became unblocked, and it had pending client DNS requests. Bugfix
2241 on 0.2.0.1-alpha. Fixes bug 632.
2243 o Minor bugfixes (on 0.1.2.x):
2244 - Generate "STATUS_SERVER" events rather than misspelled
2245 "STATUS_SEVER" events. Caught by mwenge.
2246 - When counting the number of bytes written on a TLS connection,
2247 look at the BIO actually used for writing to the network, not
2248 at the BIO used (sometimes) to buffer data for the network.
2249 Looking at different BIOs could result in write counts on the
2250 order of ULONG_MAX. Fixes bug 614.
2251 - On Windows, correctly detect errors when listing the contents of
2252 a directory. Fix from lodger.
2254 o Minor bugfixes (on 0.2.0.x):
2255 - Downgrade "sslv3 alert handshake failure" message to INFO.
2256 - If we set RelayBandwidthRate and RelayBandwidthBurst very high but
2257 left BandwidthRate and BandwidthBurst at the default, we would be
2258 silently limited by those defaults. Now raise them to match the
2259 RelayBandwidth* values.
2260 - Fix the SVK version detection logic to work correctly on a branch.
2261 - Make --enable-openbsd-malloc work correctly on Linux with alpha
2262 CPUs. Fixes bug 625.
2263 - Logging functions now check that the passed severity is sane.
2264 - Use proper log levels in the testsuite call of
2265 get_interface_address6().
2266 - When using a nonstandard malloc, do not use the platform values for
2267 HAVE_MALLOC_GOOD_SIZE or HAVE_MALLOC_USABLE_SIZE.
2268 - Make the openbsd malloc code use 8k pages on alpha CPUs and
2270 - Detect mismatched page sizes when using --enable-openbsd-malloc.
2271 - Avoid double-marked-for-close warning when certain kinds of invalid
2272 .in-addr.arpa addresses are passed to the DNSPort. Part of a fix
2273 for bug 617. Bugfix on 0.2.0.1-alpha.
2274 - Make sure that the "NULL-means-reject *:*" convention is followed by
2275 all the policy manipulation functions, avoiding some possible crash
2276 bugs. Bug found by lodger. Bugfix on 0.2.0.16-alpha.
2277 - Fix the implementation of ClientDNSRejectInternalAddresses so that it
2278 actually works, and doesn't warn about every single reverse lookup.
2279 Fixes the other part of bug 617. Bugfix on 0.2.0.1-alpha.
2282 - Only log guard node status when guard node status has changed.
2283 - Downgrade the 3 most common "INFO" messages to "DEBUG". This will
2284 make "INFO" 75% less verbose.
2287 Changes in version 0.2.0.21-rc - 2008-03-02
2288 Tor 0.2.0.21-rc is the second release candidate for the 0.2.0 series. It
2289 makes Tor work well with Vidalia again, fixes a rare assert bug,
2290 and fixes a pair of more minor bugs. The bundles also include Vidalia
2291 0.1.0 and Torbutton 1.1.16.
2294 - The control port should declare that it requires password auth
2295 when HashedControlSessionPassword is set too. Patch from Matt Edman;
2296 bugfix on 0.2.0.20-rc. Fixes bug 615.
2297 - Downgrade assert in connection_buckets_decrement() to a log message.
2298 This may help us solve bug 614, and in any case will make its
2299 symptoms less severe. Bugfix on 0.2.0.20-rc. Reported by fredzupy.
2300 - We were sometimes miscounting the number of bytes read from the
2301 network, causing our rate limiting to not be followed exactly.
2302 Bugfix on 0.2.0.16-alpha. Reported by lodger.
2305 - Fix compilation with OpenSSL 0.9.8 and 0.9.8a. All other supported
2306 OpenSSL versions should have been working fine. Diagnosis and patch
2307 from lodger, Karsten Loesing, and Sebastian Hahn. Fixes bug 616.
2308 Bugfix on 0.2.0.20-rc.
2311 Changes in version 0.2.0.20-rc - 2008-02-24
2312 Tor 0.2.0.20-rc is the first release candidate for the 0.2.0 series. It
2313 makes more progress towards normalizing Tor's TLS handshake, makes
2314 hidden services work better again, helps relays bootstrap if they don't
2315 know their IP address, adds optional support for linking in openbsd's
2316 allocator or tcmalloc, allows really fast relays to scale past 15000
2317 sockets, and fixes a bunch of minor bugs reported by Veracode.
2320 - Enable the revised TLS handshake based on the one designed by
2321 Steven Murdoch in proposal 124, as revised in proposal 130. It
2322 includes version negotiation for OR connections as described in
2323 proposal 105. The new handshake is meant to be harder for censors
2324 to fingerprint, and it adds the ability to detect certain kinds of
2325 man-in-the-middle traffic analysis attacks. The version negotiation
2326 feature will allow us to improve Tor's link protocol more safely
2328 - Choose which bridge to use proportional to its advertised bandwidth,
2329 rather than uniformly at random. This should speed up Tor for
2330 bridge users. Also do this for people who set StrictEntryNodes.
2331 - When a TrackHostExits-chosen exit fails too many times in a row,
2332 stop using it. Bugfix on 0.1.2.x; fixes bug 437.
2335 - Resolved problems with (re-)fetching hidden service descriptors.
2336 Patch from Karsten Loesing; fixes problems with 0.2.0.18-alpha
2338 - If we only ever used Tor for hidden service lookups or posts, we
2339 would stop building circuits and start refusing connections after
2340 24 hours, since we falsely believed that Tor was dormant. Reported
2341 by nwf; bugfix on 0.1.2.x.
2342 - Servers that don't know their own IP address should go to the
2343 authorities for their first directory fetch, even if their DirPort
2344 is off or if they don't know they're reachable yet. This will help
2345 them bootstrap better. Bugfix on 0.2.0.18-alpha; fixes bug 609.
2346 - When counting the number of open sockets, count not only the number
2347 of sockets we have received from the socket() call, but also
2348 the number we've gotten from accept() and socketpair(). This bug
2349 made us fail to count all sockets that we were using for incoming
2350 connections. Bugfix on 0.2.0.x.
2351 - Fix code used to find strings within buffers, when those strings
2352 are not in the first chunk of the buffer. Bugfix on 0.2.0.x.
2353 - Fix potential segfault when parsing HTTP headers. Bugfix on 0.2.0.x.
2354 - Add a new __HashedControlSessionPassword option for controllers
2355 to use for one-off session password hashes that shouldn't get
2356 saved to disk by SAVECONF --- Vidalia users were accumulating a
2357 pile of HashedControlPassword lines in their torrc files, one for
2358 each time they had restarted Tor and then clicked Save. Make Tor
2359 automatically convert "HashedControlPassword" to this new option but
2360 only when it's given on the command line. Partial fix for bug 586.
2362 o Minor features (performance):
2363 - Tune parameters for cell pool allocation to minimize amount of
2365 - Add OpenBSD malloc code from phk as an optional malloc
2366 replacement on Linux: some glibc libraries do very poorly
2367 with Tor's memory allocation patterns. Pass
2368 --enable-openbsd-malloc to get the replacement malloc code.
2369 - Add a --with-tcmalloc option to the configure script to link
2370 against tcmalloc (if present). Does not yet search for
2371 non-system include paths.
2372 - Stop imposing an arbitrary maximum on the number of file descriptors
2373 used for busy servers. Bug reported by Olaf Selke; patch from
2376 o Minor features (other):
2377 - When SafeLogging is disabled, log addresses along with all TLS
2379 - When building with --enable-gcc-warnings, check for whether Apple's
2380 warning "-Wshorten-64-to-32" is available.
2381 - Add a --passphrase-fd argument to the tor-gencert command for
2384 o Minor bugfixes (memory leaks and code problems):
2385 - We were leaking a file descriptor if Tor started with a zero-length
2386 cached-descriptors file. Patch by freddy77; bugfix on 0.1.2.
2387 - Detect size overflow in zlib code. Reported by Justin Ferguson and
2389 - We were comparing the raw BridgePassword entry with a base64'ed
2390 version of it, when handling a "/tor/networkstatus-bridges"
2391 directory request. Now compare correctly. Noticed by Veracode.
2392 - Recover from bad tracked-since value in MTBF-history file.
2394 - Alter the code that tries to recover from unhandled write
2395 errors, to not try to flush onto a socket that's given us
2396 unhandled errors. Bugfix on 0.1.2.x.
2397 - Make Unix controlsockets work correctly on OpenBSD. Patch from
2398 tup. Bugfix on 0.2.0.3-alpha.
2400 o Minor bugfixes (other):
2401 - If we have an extra-info document for our server, always make
2402 it available on the control port, even if we haven't gotten
2403 a copy of it from an authority yet. Patch from mwenge.
2404 - Log the correct memory chunk sizes for empty RAM chunks in mempool.c.
2405 - Directory mirrors no longer include a guess at the client's IP
2406 address if the connection appears to be coming from the same /24
2407 network; it was producing too many wrong guesses.
2408 - Make the new hidden service code respect the SafeLogging setting.
2409 Bugfix on 0.2.0.x. Patch from Karsten.
2410 - When starting as an authority, do not overwrite all certificates
2411 cached from other authorities. Bugfix on 0.2.0.x. Fixes bug 606.
2412 - If we're trying to flush the last bytes on a connection (for
2413 example, when answering a directory request), reset the
2414 time-to-give-up timeout every time we manage to write something
2415 on the socket. Bugfix on 0.1.2.x.
2416 - Change the behavior of "getinfo status/good-server-descriptor"
2417 so it doesn't return failure when any authority disappears.
2418 - Even though the man page said that "TrackHostExits ." should
2419 work, nobody had ever implemented it. Bugfix on 0.1.0.x.
2420 - Report TLS "zero return" case as a "clean close" and "IO error"
2421 as a "close". Stop calling closes "unexpected closes": existing
2422 Tors don't use SSL_close(), so having a connection close without
2423 the TLS shutdown handshake is hardly unexpected.
2424 - Send NAMESERVER_STATUS messages for a single failed nameserver
2427 o Code simplifications and refactoring:
2428 - Remove the tor_strpartition function: its logic was confused,
2429 and it was only used for one thing that could be implemented far
2433 Changes in version 0.2.0.19-alpha - 2008-02-09
2434 Tor 0.2.0.19-alpha makes more progress towards normalizing Tor's TLS
2435 handshake, makes path selection for relays more secure and IP address
2436 guessing more robust, and generally fixes a lot of bugs in preparation
2437 for calling the 0.2.0 branch stable.
2440 - Do not include recognizeable strings in the commonname part of
2441 Tor's x509 certificates.
2444 - If we're a relay, avoid picking ourselves as an introduction point,
2445 a rendezvous point, or as the final hop for internal circuits. Bug
2446 reported by taranis and lodger. Bugfix on 0.1.2.x.
2447 - Patch from "Andrew S. Lists" to catch when we contact a directory
2448 mirror at IP address X and he says we look like we're coming from
2449 IP address X. Bugfix on 0.1.2.x.
2451 o Minor features (security):
2452 - Be more paranoid about overwriting sensitive memory on free(),
2453 as a defensive programming tactic to ensure forward secrecy.
2455 o Minor features (directory authority):
2456 - Actually validate the options passed to AuthDirReject,
2457 AuthDirInvalid, AuthDirBadDir, and AuthDirBadExit.
2458 - Reject router descriptors with out-of-range bandwidthcapacity or
2459 bandwidthburst values.
2461 o Minor features (controller):
2462 - Reject controller commands over 1MB in length. This keeps rogue
2463 processes from running us out of memory.
2465 o Minor features (misc):
2466 - Give more descriptive well-formedness errors for out-of-range
2467 hidden service descriptor/protocol versions.
2468 - Make memory debugging information describe more about history
2469 of cell allocation, so we can help reduce our memory use.
2471 o Deprecated features (controller):
2472 - The status/version/num-versioning and status/version/num-concurring
2473 GETINFO options are no longer useful in the v3 directory protocol:
2474 treat them as deprecated, and warn when they're used.
2477 - When our consensus networkstatus has been expired for a while, stop
2478 being willing to build circuits using it. Fixes bug 401. Bugfix
2480 - Directory caches now fetch certificates from all authorities
2481 listed in a networkstatus consensus, even when they do not
2482 recognize them. Fixes bug 571. Bugfix on 0.2.0.x.
2483 - When connecting to a bridge without specifying its key, insert
2484 the connection into the identity-to-connection map as soon as
2485 a key is learned. Fixes bug 574. Bugfix on 0.2.0.x.
2486 - Detect versions of OS X where malloc_good_size() is present in the
2487 library but never actually declared. Resolves bug 587. Bugfix
2489 - Stop incorrectly truncating zlib responses to directory authority
2490 signature download requests. Fixes bug 593. Bugfix on 0.2.0.x.
2491 - Stop recommending that every server operator send mail to tor-ops.
2492 Resolves bug 597. Bugfix on 0.1.2.x.
2493 - Don't trigger an assert if we start a directory authority with a
2494 private IP address (like 127.0.0.1).
2495 - Avoid possible failures when generating a directory with routers
2496 with over-long versions strings, or too many flags set. Bugfix
2498 - If an attempt to launch a DNS resolve request over the control
2499 port fails because we have overrun the limit on the number of
2500 connections, tell the controller that the request has failed.
2501 - Avoid using too little bandwidth when our clock skips a few
2502 seconds. Bugfix on 0.1.2.x.
2503 - Fix shell error when warning about missing packages in configure
2504 script, on Fedora or Red Hat machines. Bugfix on 0.2.0.x.
2505 - Do not become confused when receiving a spurious VERSIONS-like
2506 cell from a confused v1 client. Bugfix on 0.2.0.x.
2507 - Re-fetch v2 (as well as v0) rendezvous descriptors when all
2508 introduction points for a hidden service have failed. Patch from
2509 Karsten Loesing. Bugfix on 0.2.0.x.
2511 o Code simplifications and refactoring:
2512 - Remove some needless generality from cpuworker code, for improved
2514 - Stop overloading the circuit_t.onionskin field for both "onionskin
2515 from a CREATE cell that we are waiting for a cpuworker to be
2516 assigned" and "onionskin from an EXTEND cell that we are going to
2517 send to an OR as soon as we are connected". Might help with bug 600.
2518 - Add an in-place version of aes_crypt() so that we can avoid doing a
2519 needless memcpy() call on each cell payload.
2522 Changes in version 0.2.0.18-alpha - 2008-01-25
2523 Tor 0.2.0.18-alpha adds a sixth v3 directory authority run by CCC,
2524 fixes a big memory leak in 0.2.0.17-alpha, and adds new config options
2525 that can warn or reject connections to ports generally associated with
2526 vulnerable-plaintext protocols.
2528 o New directory authorities:
2529 - Set up dannenberg (run by CCC) as the sixth v3 directory
2533 - Fix a major memory leak when attempting to use the v2 TLS
2534 handshake code. Bugfix on 0.2.0.x; fixes bug 589.
2535 - We accidentally enabled the under-development v2 TLS handshake
2536 code, which was causing log entries like "TLS error while
2537 renegotiating handshake". Disable it again. Resolves bug 590.
2538 - We were computing the wrong Content-Length: header for directory
2539 responses that need to be compressed on the fly, causing clients
2540 asking for those items to always fail. Bugfix on 0.2.0.x; partially
2544 - Avoid going directly to the directory authorities even if you're a
2545 relay, if you haven't found yourself reachable yet or if you've
2546 decided not to advertise your dirport yet. Addresses bug 556.
2547 - If we've gone 12 hours since our last bandwidth check, and we
2548 estimate we have less than 50KB bandwidth capacity but we could
2549 handle more, do another bandwidth test.
2550 - New config options WarnPlaintextPorts and RejectPlaintextPorts so
2551 Tor can warn and/or refuse connections to ports commonly used with
2552 vulnerable-plaintext protocols. Currently we warn on ports 23,
2553 109, 110, and 143, but we don't reject any.
2556 - When we setconf ClientOnly to 1, close any current OR and Dir
2557 listeners. Reported by mwenge.
2558 - When we get a consensus that's been signed by more people than
2559 we expect, don't log about it; it's not a big deal. Reported
2563 - Don't answer "/tor/networkstatus-bridges" directory requests if
2564 the request isn't encrypted.
2565 - Make "ClientOnly 1" config option disable directory ports too.
2566 - Patches from Karsten Loesing to make v2 hidden services more
2567 robust: work even when there aren't enough HSDir relays available;
2568 retry when a v2 rend desc fetch fails; but don't retry if we
2569 already have a usable v0 rend desc.
2572 Changes in version 0.2.0.17-alpha - 2008-01-17
2573 Tor 0.2.0.17-alpha makes the tarball build cleanly again (whoops).
2576 - Make the tor-gencert man page get included correctly in the tarball.
2579 Changes in version 0.2.0.16-alpha - 2008-01-17
2580 Tor 0.2.0.16-alpha adds a fifth v3 directory authority run by Karsten
2581 Loesing, and generally cleans up a lot of features and minor bugs.
2583 o New directory authorities:
2584 - Set up gabelmoo (run by Karsten Loesing) as the fifth v3 directory
2587 o Major performance improvements:
2588 - Switch our old ring buffer implementation for one more like that
2589 used by free Unix kernels. The wasted space in a buffer with 1mb
2590 of data will now be more like 8k than 1mb. The new implementation
2591 also avoids realloc();realloc(); patterns that can contribute to
2592 memory fragmentation.
2595 - Configuration files now accept C-style strings as values. This
2596 helps encode characters not allowed in the current configuration
2597 file format, such as newline or #. Addresses bug 557.
2598 - Although we fixed bug 539 (where servers would send HTTP status 503
2599 responses _and_ send a body too), there are still servers out
2600 there that haven't upgraded. Therefore, make clients parse such
2601 bodies when they receive them.
2602 - When we're not serving v2 directory information, there is no reason
2603 to actually keep any around. Remove the obsolete files and directory
2604 on startup if they are very old and we aren't going to serve them.
2606 o Minor performance improvements:
2607 - Reference-count and share copies of address policy entries; only 5%
2608 of them were actually distinct.
2609 - Never walk through the list of logs if we know that no log is
2610 interested in a given message.
2613 - When an authority has not signed a consensus, do not try to
2614 download a nonexistent "certificate with key 00000000". Bugfix
2615 on 0.2.0.x. Fixes bug 569.
2616 - Fix a rare assert error when we're closing one of our threads:
2617 use a mutex to protect the list of logs, so we never write to the
2618 list as it's being freed. Bugfix on 0.1.2.x. Fixes the very rare
2619 bug 575, which is kind of the revenge of bug 222.
2620 - Patch from Karsten Loesing to complain less at both the client
2621 and the relay when a relay used to have the HSDir flag but doesn't
2622 anymore, and we try to upload a hidden service descriptor.
2623 - Stop leaking one cert per TLS context. Fixes bug 582. Bugfix on
2625 - Do not try to download missing certificates until we have tried
2626 to check our fallback consensus. Fixes bug 583.
2627 - Make bridges round reported GeoIP stats info up to the nearest
2628 estimate, not down. Now we can distinguish between "0 people from
2629 this country" and "1 person from this country".
2630 - Avoid a spurious free on base64 failure. Bugfix on 0.1.2.
2631 - Avoid possible segfault if key generation fails in
2632 crypto_pk_hybrid_encrypt. Bugfix on 0.2.0.
2633 - Avoid segfault in the case where a badly behaved v2 versioning
2634 directory sends a signed networkstatus with missing client-versions.
2636 - Avoid segfaults on certain complex invocations of
2637 router_get_by_hexdigest(). Bugfix on 0.1.2.
2638 - Correct bad index on array access in parse_http_time(). Bugfix
2640 - Fix possible bug in vote generation when server versions are present
2641 but client versions are not.
2642 - Fix rare bug on REDIRECTSTREAM control command when called with no
2643 port set: it could erroneously report an error when none had
2645 - Avoid bogus crash-prone, leak-prone tor_realloc when we're
2646 compressing large objects and find ourselves with more than 4k
2647 left over. Bugfix on 0.2.0.
2648 - Fix a small memory leak when setting up a hidden service.
2649 - Fix a few memory leaks that could in theory happen under bizarre
2651 - Fix an assert if we post a general-purpose descriptor via the
2652 control port but that descriptor isn't mentioned in our current
2653 network consensus. Bug reported by Jon McLachlan; bugfix on
2656 o Minor features (controller):
2657 - Get NS events working again. Patch from tup.
2658 - The GETCONF command now escapes and quotes configuration values
2659 that don't otherwise fit into the torrc file.
2660 - The SETCONF command now handles quoted values correctly.
2662 o Minor features (directory authorities):
2663 - New configuration options to override default maximum number of
2664 servers allowed on a single IP address. This is important for
2665 running a test network on a single host.
2666 - Actually implement the -s option to tor-gencert.
2667 - Add a manual page for tor-gencert.
2669 o Minor features (bridges):
2670 - Bridge authorities no longer serve bridge descriptors over
2671 unencrypted connections.
2673 o Minor features (other):
2674 - Add hidden services and DNSPorts to the list of things that make
2675 Tor accept that it has running ports. Change starting Tor with no
2676 ports from a fatal error to a warning; we might change it back if
2677 this turns out to confuse anybody. Fixes bug 579.
2680 Changes in version 0.1.2.19 - 2008-01-17
2681 Tor 0.1.2.19 fixes a huge memory leak on exit relays, makes the default
2682 exit policy a little bit more conservative so it's safer to run an
2683 exit relay on a home system, and fixes a variety of smaller issues.
2686 - Exit policies now reject connections that are addressed to a
2687 relay's public (external) IP address too, unless
2688 ExitPolicyRejectPrivate is turned off. We do this because too
2689 many relays are running nearby to services that trust them based
2693 - When the clock jumps forward a lot, do not allow the bandwidth
2694 buckets to become negative. Fixes bug 544.
2695 - Fix a memory leak on exit relays; we were leaking a cached_resolve_t
2696 on every successful resolve. Reported by Mike Perry.
2697 - Purge old entries from the "rephist" database and the hidden
2698 service descriptor database even when DirPort is zero.
2699 - Stop thinking that 0.1.2.x directory servers can handle "begin_dir"
2700 requests. Should ease bugs 406 and 419 where 0.1.2.x relays are
2701 crashing or mis-answering these requests.
2702 - When we decide to send a 503 response to a request for servers, do
2703 not then also send the server descriptors: this defeats the whole
2704 purpose. Fixes bug 539.
2707 - Changing the ExitPolicyRejectPrivate setting should cause us to
2708 rebuild our server descriptor.
2709 - Fix handling of hex nicknames when answering controller requests for
2710 networkstatus by name, or when deciding whether to warn about
2711 unknown routers in a config option. (Patch from mwenge.)
2712 - Fix a couple of hard-to-trigger autoconf problems that could result
2713 in really weird results on platforms whose sys/types.h files define
2714 nonstandard integer types.
2715 - Don't try to create the datadir when running --verify-config or
2716 --hash-password. Resolves bug 540.
2717 - If we were having problems getting a particular descriptor from the
2718 directory caches, and then we learned about a new descriptor for
2719 that router, we weren't resetting our failure count. Reported
2721 - Although we fixed bug 539 (where servers would send HTTP status 503
2722 responses _and_ send a body too), there are still servers out there
2723 that haven't upgraded. Therefore, make clients parse such bodies
2724 when they receive them.
2725 - Run correctly on systems where rlim_t is larger than unsigned long.
2726 This includes some 64-bit systems.
2727 - Run correctly on platforms (like some versions of OS X 10.5) where
2728 the real limit for number of open files is OPEN_FILES, not rlim_max
2729 from getrlimit(RLIMIT_NOFILES).
2730 - Avoid a spurious free on base64 failure.
2731 - Avoid segfaults on certain complex invocations of
2732 router_get_by_hexdigest().
2733 - Fix rare bug on REDIRECTSTREAM control command when called with no
2734 port set: it could erroneously report an error when none had
2738 Changes in version 0.2.0.15-alpha - 2007-12-25
2739 Tor 0.2.0.14-alpha and 0.2.0.15-alpha fix a bunch of bugs with the
2740 features added in 0.2.0.13-alpha.
2743 - Fix several remotely triggerable asserts based on DirPort requests
2744 for a v2 or v3 networkstatus object before we were prepared. This
2745 was particularly bad for 0.2.0.13 and later bridge relays, who
2746 would never have a v2 networkstatus and would thus always crash
2747 when used. Bugfixes on 0.2.0.x.
2748 - Estimate the v3 networkstatus size more accurately, rather than
2749 estimating it at zero bytes and giving it artificially high priority
2750 compared to other directory requests. Bugfix on 0.2.0.x.
2753 - Fix configure.in logic for cross-compilation.
2754 - When we load a bridge descriptor from the cache, and it was
2755 previously unreachable, mark it as retriable so we won't just
2756 ignore it. Also, try fetching a new copy immediately. Bugfixes
2758 - The bridge GeoIP stats were counting other relays, for example
2759 self-reachability and authority-reachability tests.
2762 - Support compilation to target iPhone; patch from cjacker huang.
2763 To build for iPhone, pass the --enable-iphone option to configure.
2766 Changes in version 0.2.0.14-alpha - 2007-12-23
2768 - Fix a crash on startup if you install Tor 0.2.0.13-alpha fresh
2769 without a datadirectory from a previous Tor install. Reported
2771 - Fix a crash when we fetch a descriptor that turns out to be
2772 unexpected (it used to be in our networkstatus when we started
2773 fetching it, but it isn't in our current networkstatus), and we
2774 aren't using bridges. Bugfix on 0.2.0.x.
2775 - Fix a crash when accessing hidden services: it would work the first
2776 time you use a given introduction point for your service, but
2777 on subsequent requests we'd be using garbage memory. Fixed by
2778 Karsten Loesing. Bugfix on 0.2.0.13-alpha.
2779 - Fix a crash when we load a bridge descriptor from disk but we don't
2780 currently have a Bridge line for it in our torrc. Bugfix on
2784 - If bridge authorities set BridgePassword, they will serve a
2785 snapshot of known bridge routerstatuses from their DirPort to
2786 anybody who knows that password. Unset by default.
2789 - Make the unit tests build again.
2790 - Make "GETINFO/desc-annotations/id/<OR digest>" actually work.
2791 - Make PublishServerDescriptor default to 1, so the default doesn't
2792 have to change as we invent new directory protocol versions.
2793 - Fix test for rlim_t on OSX 10.3: sys/resource.h doesn't want to
2794 be included unless sys/time.h is already included. Fixes
2795 bug 553. Bugfix on 0.2.0.x.
2796 - If we receive a general-purpose descriptor and then receive an
2797 identical bridge-purpose descriptor soon after, don't discard
2798 the next one as a duplicate.
2801 - If BridgeRelay is set to 1, then the default for
2802 PublishServerDescriptor is now "bridge" rather than "v2,v3".
2803 - If the user sets RelayBandwidthRate but doesn't set
2804 RelayBandwidthBurst, then make them equal rather than erroring out.
2807 Changes in version 0.2.0.13-alpha - 2007-12-21
2808 Tor 0.2.0.13-alpha adds a fourth v3 directory authority run by Geoff
2809 Goodell, fixes many more bugs, and adds a lot of infrastructure for
2812 o New directory authorities:
2813 - Set up lefkada (run by Geoff Goodell) as the fourth v3 directory
2817 - Only update guard status (usable / not usable) once we have
2818 enough directory information. This was causing us to always pick
2819 two new guards on startup (bugfix on 0.2.0.9-alpha), and it was
2820 causing us to discard all our guards on startup if we hadn't been
2821 running for a few weeks (bugfix on 0.1.2.x). Fixes bug 448.
2822 - Purge old entries from the "rephist" database and the hidden
2823 service descriptor databases even when DirPort is zero. Bugfix
2825 - We were ignoring our RelayBandwidthRate for the first 30 seconds
2826 after opening a circuit -- even a relayed circuit. Bugfix on
2828 - Stop thinking that 0.1.2.x directory servers can handle "begin_dir"
2829 requests. Should ease bugs 406 and 419 where 0.1.2.x relays are
2830 crashing or mis-answering these types of requests.
2831 - Relays were publishing their server descriptor to v1 and v2
2832 directory authorities, but they didn't try publishing to v3-only
2833 authorities. Fix this; and also stop publishing to v1 authorities.
2835 - When we were reading router descriptors from cache, we were ignoring
2836 the annotations -- so for example we were reading in bridge-purpose
2837 descriptors as general-purpose descriptors. Bugfix on 0.2.0.8-alpha.
2838 - When we decided to send a 503 response to a request for servers, we
2839 were then also sending the server descriptors: this defeats the
2840 whole purpose. Fixes bug 539; bugfix on 0.1.2.x.
2843 - Bridge relays now behave like clients with respect to time
2844 intervals for downloading new consensus documents -- otherwise they
2845 stand out. Bridge users now wait until the end of the interval,
2846 so their bridge relay will be sure to have a new consensus document.
2847 - Three new config options (AlternateDirAuthority,
2848 AlternateBridgeAuthority, and AlternateHSAuthority) that let the
2849 user selectively replace the default directory authorities by type,
2850 rather than the all-or-nothing replacement that DirServer offers.
2851 - Tor can now be configured to read a GeoIP file from disk in one
2852 of two formats. This can be used by controllers to map IP addresses
2853 to countries. Eventually, it may support exit-by-country.
2854 - When possible, bridge relays remember which countries users
2855 are coming from, and report aggregate information in their
2856 extra-info documents, so that the bridge authorities can learn
2857 where Tor is blocked.
2858 - Bridge directory authorities now do reachability testing on the
2859 bridges they know. They provide router status summaries to the
2860 controller via "getinfo ns/purpose/bridge", and also dump summaries
2861 to a file periodically.
2862 - Stop fetching directory info so aggressively if your DirPort is
2863 on but your ORPort is off; stop fetching v2 dir info entirely.
2864 You can override these choices with the new FetchDirInfoEarly
2868 - The fix in 0.2.0.12-alpha cleared the "hsdir" flag in v3 network
2869 consensus documents when there are too many relays at a single
2870 IP address. Now clear it in v2 network status documents too, and
2871 also clear it in routerinfo_t when the relay is no longer listed
2872 in the relevant networkstatus document.
2873 - Don't crash if we get an unexpected value for the
2874 PublishServerDescriptor config option. Reported by Matt Edman;
2875 bugfix on 0.2.0.9-alpha.
2876 - Our new v2 hidden service descriptor format allows descriptors
2877 that have no introduction points. But Tor crashed when we tried
2878 to build a descriptor with no intro points (and it would have
2879 crashed if we had tried to parse one). Bugfix on 0.2.0.x; patch
2881 - Fix building with dmalloc 5.5.2 with glibc.
2882 - Reject uploaded descriptors and extrainfo documents if they're
2883 huge. Otherwise we'll cache them all over the network and it'll
2884 clog everything up. Reported by Aljosha Judmayer.
2885 - Check for presence of s6_addr16 and s6_addr32 fields in in6_addr
2886 via autoconf. Should fix compile on solaris. Bugfix on 0.2.0.x.
2887 - When the DANGEROUS_VERSION controller status event told us we're
2888 running an obsolete version, it used the string "OLD" to describe
2889 it. Yet the "getinfo" interface used the string "OBSOLETE". Now use
2890 "OBSOLETE" in both cases. Bugfix on 0.1.2.x.
2891 - If we can't expand our list of entry guards (e.g. because we're
2892 using bridges or we have StrictEntryNodes set), don't mark relays
2893 down when they fail a directory request. Otherwise we're too quick
2894 to mark all our entry points down. Bugfix on 0.1.2.x.
2895 - Fix handling of hex nicknames when answering controller requests for
2896 networkstatus by name, or when deciding whether to warn about unknown
2897 routers in a config option. Bugfix on 0.1.2.x. (Patch from mwenge.)
2898 - Fix a couple of hard-to-trigger autoconf problems that could result
2899 in really weird results on platforms whose sys/types.h files define
2900 nonstandard integer types. Bugfix on 0.1.2.x.
2901 - Fix compilation with --disable-threads set. Bugfix on 0.2.0.x.
2902 - Don't crash on name lookup when we have no current consensus. Fixes
2903 bug 538; bugfix on 0.2.0.x.
2904 - Only Tors that want to mirror the v2 directory info should
2905 create the "cached-status" directory in their datadir. (All Tors
2906 used to create it.) Bugfix on 0.2.0.9-alpha.
2907 - Directory authorities should only automatically download Extra Info
2908 documents if they're v1, v2, or v3 authorities. Bugfix on 0.1.2.x.
2911 - On the USR1 signal, when dmalloc is in use, log the top 10 memory
2912 consumers. (We already do this on HUP.)
2913 - Authorities and caches fetch the v2 networkstatus documents
2914 less often, now that v3 is encouraged.
2915 - Add a new config option BridgeRelay that specifies you want to
2916 be a bridge relay. Right now the only difference is that it makes
2917 you answer begin_dir requests, and it makes you cache dir info,
2918 even if your DirPort isn't on.
2919 - Add "GETINFO/desc-annotations/id/<OR digest>" so controllers can
2920 ask about source, timestamp of arrival, purpose, etc. We need
2921 something like this to help Vidalia not do GeoIP lookups on bridge
2923 - Allow multiple HashedControlPassword config lines, to support
2924 multiple controller passwords.
2925 - Authorities now decide whether they're authoritative for a given
2926 router based on the router's purpose.
2927 - New config options AuthDirBadDir and AuthDirListBadDirs for
2928 authorities to mark certain relays as "bad directories" in the
2929 networkstatus documents. Also supports the "!baddir" directive in
2930 the approved-routers file.
2933 Changes in version 0.2.0.12-alpha - 2007-11-16
2934 This twelfth development snapshot fixes some more build problems as
2935 well as a few minor bugs.
2938 - Make it build on OpenBSD again. Patch from tup.
2939 - Substitute BINDIR and LOCALSTATEDIR in scripts. Fixes
2940 package-building for Red Hat, OS X, etc.
2942 o Minor bugfixes (on 0.1.2.x):
2943 - Changing the ExitPolicyRejectPrivate setting should cause us to
2944 rebuild our server descriptor.
2946 o Minor bugfixes (on 0.2.0.x):
2947 - When we're lacking a consensus, don't try to perform rendezvous
2948 operations. Reported by Karsten Loesing.
2949 - Fix a small memory leak whenever we decide against using a
2950 newly picked entry guard. Reported by Mike Perry.
2951 - When authorities detected more than two relays running on the same
2952 IP address, they were clearing all the status flags but forgetting
2953 to clear the "hsdir" flag. So clients were being told that a
2954 given relay was the right choice for a v2 hsdir lookup, yet they
2955 never had its descriptor because it was marked as 'not running'
2957 - If we're trying to fetch a bridge descriptor and there's no way
2958 the bridge authority could help us (for example, we don't know
2959 a digest, or there is no bridge authority), don't be so eager to
2960 fall back to asking the bridge authority.
2961 - If we're using bridges or have strictentrynodes set, and our
2962 chosen exit is in the same family as all our bridges/entry guards,
2963 then be flexible about families.
2966 - When we negotiate a v2 link-layer connection (not yet implemented),
2967 accept RELAY_EARLY cells and turn them into RELAY cells if we've
2968 negotiated a v1 connection for their next step. Initial code for
2972 Changes in version 0.2.0.11-alpha - 2007-11-12
2973 This eleventh development snapshot fixes some build problems with
2974 the previous snapshot. It also includes a more secure-by-default exit
2975 policy for relays, fixes an enormous memory leak for exit relays, and
2976 fixes another bug where servers were falling out of the directory list.
2979 - Exit policies now reject connections that are addressed to a
2980 relay's public (external) IP address too, unless
2981 ExitPolicyRejectPrivate is turned off. We do this because too
2982 many relays are running nearby to services that trust them based
2983 on network address. Bugfix on 0.1.2.x.
2986 - Fix a memory leak on exit relays; we were leaking a cached_resolve_t
2987 on every successful resolve. Reported by Mike Perry; bugfix
2989 - On authorities, never downgrade to old router descriptors simply
2990 because they're listed in the consensus. This created a catch-22
2991 where we wouldn't list a new descriptor because there was an
2992 old one in the consensus, and we couldn't get the new one in the
2993 consensus because we wouldn't list it. Possible fix for bug 548.
2994 Also, this might cause bug 543 to appear on authorities; if so,
2995 we'll need a band-aid for that. Bugfix on 0.2.0.9-alpha.
2997 o Packaging fixes on 0.2.0.10-alpha:
2998 - We were including instructions about what to do with the
2999 src/config/fallback-consensus file, but we weren't actually
3000 including it in the tarball. Disable all of that for now.
3003 - Allow people to say PreferTunnelledDirConns rather than
3004 PreferTunneledDirConns, for those alternate-spellers out there.
3007 - Don't reevaluate all the information from our consensus document
3008 just because we've downloaded a v2 networkstatus that we intend
3009 to cache. Fixes bug 545; bugfix on 0.2.0.x.
3012 Changes in version 0.2.0.10-alpha - 2007-11-10
3013 This tenth development snapshot adds a third v3 directory authority
3014 run by Mike Perry, adds most of Karsten Loesing's new hidden service
3015 descriptor format, fixes a bad crash bug and new bridge bugs introduced
3016 in 0.2.0.9-alpha, fixes many bugs with the v3 directory implementation,
3017 fixes some minor memory leaks in previous 0.2.0.x snapshots, and
3018 addresses many more minor issues.
3020 o New directory authorities:
3021 - Set up ides (run by Mike Perry) as the third v3 directory authority.
3024 - Allow tunnelled directory connections to ask for an encrypted
3025 "begin_dir" connection or an anonymized "uses a full Tor circuit"
3026 connection independently. Now we can make anonymized begin_dir
3027 connections for (e.g.) more secure hidden service posting and
3029 - More progress on proposal 114: code from Karsten Loesing to
3030 implement new hidden service descriptor format.
3031 - Raise the default BandwidthRate/BandwidthBurst to 5MB/10MB, to
3032 accommodate the growing number of servers that use the default
3033 and are reaching it.
3034 - Directory authorities use a new formula for selecting which nodes
3035 to advertise as Guards: they must be in the top 7/8 in terms of
3036 how long we have known about them, and above the median of those
3037 nodes in terms of weighted fractional uptime.
3038 - Make "not enough dir info yet" warnings describe *why* Tor feels
3039 it doesn't have enough directory info yet.
3042 - Stop servers from crashing if they set a Family option (or
3043 maybe in other situations too). Bugfix on 0.2.0.9-alpha; reported
3045 - Make bridge users work again -- the move to v3 directories in
3046 0.2.0.9-alpha had introduced a number of bugs that made bridges
3047 no longer work for clients.
3048 - When the clock jumps forward a lot, do not allow the bandwidth
3049 buckets to become negative. Bugfix on 0.1.2.x; fixes bug 544.
3051 o Major bugfixes (v3 dir, bugfixes on 0.2.0.9-alpha):
3052 - When the consensus lists a router descriptor that we previously were
3053 mirroring, but that we considered non-canonical, reload the
3054 descriptor as canonical. This fixes bug 543 where Tor servers
3055 would start complaining after a few days that they don't have
3056 enough directory information to build a circuit.
3057 - Consider replacing the current consensus when certificates arrive
3058 that make the pending consensus valid. Previously, we were only
3059 considering replacement when the new certs _didn't_ help.
3060 - Fix an assert error on startup if we didn't already have the
3061 consensus and certs cached in our datadirectory: we were caching
3062 the consensus in consensus_waiting_for_certs but then free'ing it
3064 - Avoid sending a request for "keys/fp" (for which we'll get a 400 Bad
3065 Request) if we need more v3 certs but we've already got pending
3066 requests for all of them.
3067 - Correctly back off from failing certificate downloads. Fixes
3069 - Authorities don't vote on the Running flag if they have been running
3070 for less than 30 minutes themselves. Fixes bug 547, where a newly
3071 started authority would vote that everyone was down.
3074 - Drop support for OpenSSL version 0.9.6. Just about nobody was using
3075 it, it had no AES, and it hasn't seen any security patches since
3079 - Clients now hold circuitless TLS connections open for 1.5 times
3080 MaxCircuitDirtiness (15 minutes), since it is likely that they'll
3081 rebuild a new circuit over them within that timeframe. Previously,
3082 they held them open only for KeepalivePeriod (5 minutes).
3083 - Use "If-Modified-Since" to avoid retrieving consensus
3084 networkstatuses that we already have.
3085 - When we have no consensus, check FallbackNetworkstatusFile (defaults
3086 to $PREFIX/share/tor/fallback-consensus) for a consensus. This way
3087 we start knowing some directory caches.
3088 - When we receive a consensus from the future, warn about skew.
3089 - Improve skew reporting: try to give the user a better log message
3090 about how skewed they are, and how much this matters.
3091 - When we have a certificate for an authority, believe that
3092 certificate's claims about the authority's IP address.
3093 - New --quiet command-line option to suppress the default console log.
3094 Good in combination with --hash-password.
3095 - Authorities send back an X-Descriptor-Not-New header in response to
3096 an accepted-but-discarded descriptor upload. Partially implements
3098 - Make the log message for "tls error. breaking." more useful.
3099 - Better log messages about certificate downloads, to attempt to
3100 track down the second incarnation of bug 546.
3102 o Minor features (bridges):
3103 - If bridge users set UpdateBridgesFromAuthority, but the digest
3104 they ask for is a 404 from the bridge authority, they now fall
3105 back to trying the bridge directly.
3106 - Bridges now use begin_dir to publish their server descriptor to
3107 the bridge authority, even when they haven't set TunnelDirConns.
3109 o Minor features (controller):
3110 - When reporting clock skew, and we know that the clock is _at least
3111 as skewed_ as some value, but we don't know the actual value,
3112 report the value as a "minimum skew."
3115 - Update linux-tor-prio.sh script to allow QoS based on the uid of
3116 the Tor process. Patch from Marco Bonetti with tweaks from Mike
3120 - Refuse to start if both ORPort and UseBridges are set. Bugfix
3121 on 0.2.0.x, suggested by Matt Edman.
3122 - Don't stop fetching descriptors when FetchUselessDescriptors is
3123 set, even if we stop asking for circuits. Bugfix on 0.1.2.x;
3124 reported by tup and ioerror.
3125 - Better log message on vote from unknown authority.
3126 - Don't log "Launching 0 request for 0 router" message.
3128 o Minor bugfixes (memory leaks):
3129 - Stop leaking memory every time we parse a v3 certificate. Bugfix
3131 - Stop leaking memory every time we load a v3 certificate. Bugfix
3132 on 0.2.0.1-alpha. Fixes bug 536.
3133 - Stop leaking a cached networkstatus on exit. Bugfix on
3135 - Stop leaking voter information every time we free a consensus.
3136 Bugfix on 0.2.0.3-alpha.
3137 - Stop leaking signed data every time we check a voter signature.
3138 Bugfix on 0.2.0.3-alpha.
3139 - Stop leaking a signature every time we fail to parse a consensus or
3140 a vote. Bugfix on 0.2.0.3-alpha.
3141 - Stop leaking v2_download_status_map on shutdown. Bugfix on
3143 - Stop leaking conn->nickname every time we make a connection to a
3144 Tor relay without knowing its expected identity digest (e.g. when
3145 using bridges). Bugfix on 0.2.0.3-alpha.
3147 - Minor bugfixes (portability):
3148 - Run correctly on platforms where rlim_t is larger than unsigned
3149 long, and/or where the real limit for number of open files is
3150 OPEN_FILES, not rlim_max from getrlimit(RLIMIT_NOFILES). In
3151 particular, these may be needed for OS X 10.5.
3154 Changes in version 0.1.2.18 - 2007-10-28
3155 Tor 0.1.2.18 fixes many problems including crash bugs, problems with
3156 hidden service introduction that were causing huge delays, and a big
3157 bug that was causing some servers to disappear from the network status
3158 lists for a few hours each day.
3160 o Major bugfixes (crashes):
3161 - If a connection is shut down abruptly because of something that
3162 happened inside connection_flushed_some(), do not call
3163 connection_finished_flushing(). Should fix bug 451:
3164 "connection_stop_writing: Assertion conn->write_event failed"
3165 Bugfix on 0.1.2.7-alpha.
3166 - Fix possible segfaults in functions called from
3167 rend_process_relay_cell().
3169 o Major bugfixes (hidden services):
3170 - Hidden services were choosing introduction points uniquely by
3171 hexdigest, but when constructing the hidden service descriptor
3172 they merely wrote the (potentially ambiguous) nickname.
3173 - Clients now use the v2 intro format for hidden service
3174 connections: they specify their chosen rendezvous point by identity
3175 digest rather than by (potentially ambiguous) nickname. These
3176 changes could speed up hidden service connections dramatically.
3178 o Major bugfixes (other):
3179 - Stop publishing a new server descriptor just because we get a
3180 HUP signal. This led (in a roundabout way) to some servers getting
3181 dropped from the networkstatus lists for a few hours each day.
3182 - When looking for a circuit to cannibalize, consider family as well
3183 as identity. Fixes bug 438. Bugfix on 0.1.0.x (which introduced
3184 circuit cannibalization).
3185 - When a router wasn't listed in a new networkstatus, we were leaving
3186 the flags for that router alone -- meaning it remained Named,
3187 Running, etc -- even though absence from the networkstatus means
3188 that it shouldn't be considered to exist at all anymore. Now we
3189 clear all the flags for routers that fall out of the networkstatus
3190 consensus. Fixes bug 529.
3193 - Don't try to access (or alter) the state file when running
3194 --list-fingerprint or --verify-config or --hash-password. Resolves
3196 - When generating information telling us how to extend to a given
3197 router, do not try to include the nickname if it is
3198 absent. Resolves bug 467.
3199 - Fix a user-triggerable segfault in expand_filename(). (There isn't
3200 a way to trigger this remotely.)
3201 - When sending a status event to the controller telling it that an
3202 OR address is reachable, set the port correctly. (Previously we
3203 were reporting the dir port.)
3204 - Fix a minor memory leak whenever a controller sends the PROTOCOLINFO
3205 command. Bugfix on 0.1.2.17.
3206 - When loading bandwidth history, do not believe any information in
3207 the future. Fixes bug 434.
3208 - When loading entry guard information, do not believe any information
3210 - When we have our clock set far in the future and generate an
3211 onion key, then re-set our clock to be correct, we should not stop
3212 the onion key from getting rotated.
3213 - On some platforms, accept() can return a broken address. Detect
3214 this more quietly, and deal accordingly. Fixes bug 483.
3215 - It's not actually an error to find a non-pending entry in the DNS
3216 cache when canceling a pending resolve. Don't log unless stuff
3217 is fishy. Resolves bug 463.
3218 - Don't reset trusted dir server list when we set a configuration
3219 option. Patch from Robert Hogan.
3220 - Don't try to create the datadir when running --verify-config or
3221 --hash-password. Resolves bug 540.
3224 Changes in version 0.2.0.9-alpha - 2007-10-24
3225 This ninth development snapshot switches clients to the new v3 directory
3226 system; allows servers to be listed in the network status even when they
3227 have the same nickname as a registered server; and fixes many other
3228 bugs including a big one that was causing some servers to disappear
3229 from the network status lists for a few hours each day.
3231 o Major features (directory system):
3232 - Clients now download v3 consensus networkstatus documents instead
3233 of v2 networkstatus documents. Clients and caches now base their
3234 opinions about routers on these consensus documents. Clients only
3235 download router descriptors listed in the consensus.
3236 - Authorities now list servers who have the same nickname as
3237 a different named server, but list them with a new flag,
3238 "Unnamed". Now we can list servers that happen to pick the same
3239 nickname as a server that registered two years ago and then
3240 disappeared. Partially implements proposal 122.
3241 - If the consensus lists a router as "Unnamed", the name is assigned
3242 to a different router: do not identify the router by that name.
3243 Partially implements proposal 122.
3244 - Authorities can now come to a consensus on which method to use to
3245 compute the consensus. This gives us forward compatibility.
3248 - Stop publishing a new server descriptor just because we HUP or
3249 when we find our DirPort to be reachable but won't actually publish
3250 it. New descriptors without any real changes are dropped by the
3251 authorities, and can screw up our "publish every 18 hours" schedule.
3253 - When a router wasn't listed in a new networkstatus, we were leaving
3254 the flags for that router alone -- meaning it remained Named,
3255 Running, etc -- even though absence from the networkstatus means
3256 that it shouldn't be considered to exist at all anymore. Now we
3257 clear all the flags for routers that fall out of the networkstatus
3258 consensus. Fixes bug 529; bugfix on 0.1.2.x.
3259 - Fix awful behavior in DownloadExtraInfo option where we'd fetch
3260 extrainfo documents and then discard them immediately for not
3261 matching the latest router. Bugfix on 0.2.0.1-alpha.
3263 o Minor features (v3 directory protocol):
3264 - Allow tor-gencert to generate a new certificate without replacing
3266 - Allow certificates to include an address.
3267 - When we change our directory-cache settings, reschedule all voting
3268 and download operations.
3269 - Reattempt certificate downloads immediately on failure, as long as
3270 we haven't failed a threshold number of times yet.
3271 - Delay retrying consensus downloads while we're downloading
3272 certificates to verify the one we just got. Also, count getting a
3273 consensus that we already have (or one that isn't valid) as a failure,
3274 and count failing to get the certificates after 20 minutes as a
3276 - Build circuits and download descriptors even if our consensus is a
3277 little expired. (This feature will go away once authorities are
3280 o Minor features (router descriptor cache):
3281 - If we find a cached-routers file that's been sitting around for more
3282 than 28 days unmodified, then most likely it's a leftover from
3283 when we upgraded to 0.2.0.8-alpha. Remove it. It has no good
3285 - When we (as a cache) download a descriptor because it was listed
3286 in a consensus, remember when the consensus was supposed to expire,
3287 and don't expire the descriptor until then.
3289 o Minor features (performance):
3290 - Call routerlist_remove_old_routers() much less often. This should
3291 speed startup, especially on directory caches.
3292 - Don't try to launch new descriptor downloads quite so often when we
3293 already have enough directory information to build circuits.
3294 - Base64 decoding was actually showing up on our profile when parsing
3295 the initial descriptor file; switch to an in-process all-at-once
3296 implementation that's about 3.5x times faster than calling out to
3299 o Minor features (compilation):
3300 - Detect non-ASCII platforms (if any still exist) and refuse to
3301 build there: some of our code assumes that 'A' is 65 and so on.
3303 o Minor bugfixes (v3 directory authorities, bugfixes on 0.2.0.x):
3304 - Make the "next period" votes into "current period" votes immediately
3305 after publishing the consensus; avoid a heisenbug that made them
3306 stick around indefinitely.
3307 - When we discard a vote as a duplicate, do not report this as
3309 - Treat missing v3 keys or certificates as an error when running as a
3310 v3 directory authority.
3311 - When we're configured to be a v3 authority, but we're only listed
3312 as a non-v3 authority in our DirServer line for ourself, correct
3314 - If an authority doesn't have a qualified hostname, just put
3315 its address in the vote. This fixes the problem where we referred to
3316 "moria on moria:9031."
3317 - Distinguish between detached signatures for the wrong period, and
3318 detached signatures for a divergent vote.
3319 - Fix a small memory leak when computing a consensus.
3320 - When there's no concensus, we were forming a vote every 30
3321 minutes, but writing the "valid-after" line in our vote based
3322 on our configured V3AuthVotingInterval: so unless the intervals
3323 matched up, we immediately rejected our own vote because it didn't
3324 start at the voting interval that caused us to construct a vote.
3326 o Minor bugfixes (v3 directory protocol, bugfixes on 0.2.0.x):
3327 - Delete unverified-consensus when the real consensus is set.
3328 - Consider retrying a consensus networkstatus fetch immediately
3329 after one fails: don't wait 60 seconds to notice.
3330 - When fetching a consensus as a cache, wait until a newer consensus
3331 should exist before trying to replace the current one.
3332 - Use a more forgiving schedule for retrying failed consensus
3333 downloads than for other types.
3335 o Minor bugfixes (other directory issues):
3336 - Correct the implementation of "download votes by digest." Bugfix on
3338 - Authorities no longer send back "400 you're unreachable please fix
3339 it" errors to Tor servers that aren't online all the time. We're
3340 supposed to tolerate these servers now. Bugfix on 0.1.2.x.
3342 o Minor bugfixes (controller):
3343 - Don't reset trusted dir server list when we set a configuration
3344 option. Patch from Robert Hogan; bugfix on 0.1.2.x.
3345 - Respond to INT and TERM SIGNAL commands before we execute the
3346 signal, in case the signal shuts us down. We had a patch in
3347 0.1.2.1-alpha that tried to do this by queueing the response on
3348 the connection's buffer before shutting down, but that really
3349 isn't the same thing at all. Bug located by Matt Edman.
3351 o Minor bugfixes (misc):
3352 - Correctly check for bad options to the "PublishServerDescriptor"
3353 config option. Bugfix on 0.2.0.1-alpha; reported by Matt Edman.
3354 - Stop leaking memory on failing case of base32_decode, and make
3355 it accept upper-case letters. Bugfixes on 0.2.0.7-alpha.
3356 - Don't try to download extrainfo documents when we're trying to
3357 fetch enough directory info to build a circuit: having enough
3358 info should get priority. Bugfix on 0.2.0.x.
3359 - Don't complain that "your server has not managed to confirm that its
3360 ports are reachable" if we haven't been able to build any circuits
3361 yet. Bug found by spending four hours without a v3 consensus. Bugfix
3363 - Detect the reason for failing to mmap a descriptor file we just
3364 wrote, and give a more useful log message. Fixes bug 533. Bugfix
3367 o Code simplifications and refactoring:
3368 - Remove support for the old bw_accounting file: we've been storing
3369 bandwidth accounting information in the state file since
3370 0.1.2.5-alpha. This may result in bandwidth accounting errors
3371 if you try to upgrade from 0.1.1.x or earlier, or if you try to
3372 downgrade to 0.1.1.x or earlier.
3373 - New convenience code to locate a file within the DataDirectory.
3374 - Move non-authority functionality out of dirvote.c.
3375 - Refactor the arguments for router_pick_{directory_|trusteddir}server
3376 so that they all take the same named flags.
3379 - Include the "tor-ctrl.sh" bash script by Stefan Behte to provide
3380 Unix users an easy way to script their Tor process (e.g. by
3381 adjusting bandwidth based on the time of the day).
3384 Changes in version 0.2.0.8-alpha - 2007-10-12
3385 This eighth development snapshot fixes a crash bug that's been bothering
3386 us since February 2007, lets bridge authorities store a list of bridge
3387 descriptors they've seen, gets v3 directory voting closer to working,
3388 starts caching v3 directory consensus documents on directory mirrors,
3389 and fixes a variety of smaller issues including some minor memory leaks.
3391 o Major features (router descriptor cache):
3392 - Store routers in a file called cached-descriptors instead of in
3393 cached-routers. Initialize cached-descriptors from cached-routers
3394 if the old format is around. The new format allows us to store
3395 annotations along with descriptors.
3396 - Use annotations to record the time we received each descriptor, its
3397 source, and its purpose.
3398 - Disable the SETROUTERPURPOSE controller command: it is now
3400 - Controllers should now specify cache=no or cache=yes when using
3401 the +POSTDESCRIPTOR command.
3402 - Bridge authorities now write bridge descriptors to disk, meaning
3403 we can export them to other programs and begin distributing them
3406 o Major features (directory authorities):
3407 - When a v3 authority is missing votes or signatures, it now tries
3409 - Directory authorities track weighted fractional uptime as well as
3410 weighted mean-time-between failures. WFU is suitable for deciding
3411 whether a node is "usually up", while MTBF is suitable for deciding
3412 whether a node is "likely to stay up." We need both, because
3413 "usually up" is a good requirement for guards, while "likely to
3414 stay up" is a good requirement for long-lived connections.
3416 o Major features (v3 directory system):
3417 - Caches now download v3 network status documents as needed,
3418 and download the descriptors listed in them.
3419 - All hosts now attempt to download and keep fresh v3 authority
3420 certificates, and re-attempt after failures.
3421 - More internal-consistency checks for vote parsing.
3423 o Major bugfixes (crashes):
3424 - If a connection is shut down abruptly because of something that
3425 happened inside connection_flushed_some(), do not call
3426 connection_finished_flushing(). Should fix bug 451. Bugfix on
3429 o Major bugfixes (performance):
3430 - Fix really bad O(n^2) performance when parsing a long list of
3431 routers: Instead of searching the entire list for an "extra-info "
3432 string which usually wasn't there, once for every routerinfo
3433 we read, just scan lines forward until we find one we like.
3435 - When we add data to a write buffer in response to the data on that
3436 write buffer getting low because of a flush, do not consider the
3437 newly added data as a candidate for immediate flushing, but rather
3438 make it wait until the next round of writing. Otherwise, we flush
3439 and refill recursively, and a single greedy TLS connection can
3440 eat all of our bandwidth. Bugfix on 0.1.2.7-alpha.
3442 o Minor features (v3 authority system):
3443 - Add more ways for tools to download the votes that lead to the
3445 - Send a 503 when low on bandwidth and a vote, consensus, or
3446 certificate is requested.
3447 - If-modified-since is now implemented properly for all kinds of
3448 certificate requests.
3450 o Minor bugfixes (network statuses):
3451 - Tweak the implementation of proposal 109 slightly: allow at most
3452 two Tor servers on the same IP address, except if it's the location
3453 of a directory authority, in which case allow five. Bugfix on
3456 o Minor bugfixes (controller):
3457 - When sending a status event to the controller telling it that an
3458 OR address is reachable, set the port correctly. (Previously we
3459 were reporting the dir port.) Bugfix on 0.1.2.x.
3461 o Minor bugfixes (v3 directory system):
3462 - Fix logic to look up a cert by its signing key digest. Bugfix on
3464 - Only change the reply to a vote to "OK" if it's not already
3465 set. This gets rid of annoying "400 OK" log messages, which may
3466 have been masking some deeper issue. Bugfix on 0.2.0.7-alpha.
3467 - When we get a valid consensus, recompute the voting schedule.
3468 - Base the valid-after time of a vote on the consensus voting
3469 schedule, not on our preferred schedule.
3470 - Make the return values and messages from signature uploads and
3471 downloads more sensible.
3472 - Fix a memory leak when serving votes and consensus documents, and
3473 another when serving certificates.
3475 o Minor bugfixes (performance):
3476 - Use a slightly simpler string hashing algorithm (copying Python's
3477 instead of Java's) and optimize our digest hashing algorithm to take
3478 advantage of 64-bit platforms and to remove some possibly-costly
3480 - Fix a minor memory leak whenever we parse guards from our state
3481 file. Bugfix on 0.2.0.7-alpha.
3482 - Fix a minor memory leak whenever we write out a file. Bugfix on
3484 - Fix a minor memory leak whenever a controller sends the PROTOCOLINFO
3485 command. Bugfix on 0.2.0.5-alpha.
3487 o Minor bugfixes (portability):
3488 - On some platforms, accept() can return a broken address. Detect
3489 this more quietly, and deal accordingly. Fixes bug 483.
3490 - Stop calling tor_strlower() on uninitialized memory in some cases.
3491 Bugfix in 0.2.0.7-alpha.
3493 o Minor bugfixes (usability):
3494 - Treat some 403 responses from directory servers as INFO rather than
3495 WARN-severity events.
3496 - It's not actually an error to find a non-pending entry in the DNS
3497 cache when canceling a pending resolve. Don't log unless stuff is
3498 fishy. Resolves bug 463.
3500 o Minor bugfixes (anonymity):
3501 - Never report that we've used more bandwidth than we're willing to
3502 relay: it leaks how much non-relay traffic we're using. Resolves
3504 - When looking for a circuit to cannibalize, consider family as well
3505 as identity. Fixes bug 438. Bugfix on 0.1.0.x (which introduced
3506 circuit cannibalization).
3508 o Code simplifications and refactoring:
3509 - Make a bunch of functions static. Remove some dead code.
3510 - Pull out about a third of the really big routerlist.c; put it in a
3511 new module, networkstatus.c.
3512 - Merge the extra fields in local_routerstatus_t back into
3513 routerstatus_t: we used to need one routerstatus_t for each
3514 authority's opinion, plus a local_routerstatus_t for the locally
3515 computed consensus opinion. To save space, we put the locally
3516 modified fields into local_routerstatus_t, and only the common
3517 stuff into routerstatus_t. But once v3 directories are in use,
3518 clients and caches will no longer need to hold authority opinions;
3519 thus, the rationale for keeping the types separate is now gone.
3520 - Make the code used to reschedule and reattempt downloads more
3522 - Turn all 'Are we a directory server/mirror?' logic into a call to
3524 - Remove the code to generate the oldest (v1) directory format.
3525 The code has been disabled since 0.2.0.5-alpha.
3528 Changes in version 0.2.0.7-alpha - 2007-09-21
3529 This seventh development snapshot makes bridges work again, makes bridge
3530 authorities work for the first time, fixes two huge performance flaws
3531 in hidden services, and fixes a variety of minor issues.
3533 o New directory authorities:
3534 - Set up moria1 and tor26 as the first v3 directory authorities. See
3535 doc/spec/dir-spec.txt for details on the new directory design.
3537 o Major bugfixes (crashes):
3538 - Fix possible segfaults in functions called from
3539 rend_process_relay_cell(). Bugfix on 0.1.2.x.
3541 o Major bugfixes (bridges):
3542 - Fix a bug that made servers send a "404 Not found" in response to
3543 attempts to fetch their server descriptor. This caused Tor servers
3544 to take many minutes to establish reachability for their DirPort,
3545 and it totally crippled bridges. Bugfix on 0.2.0.5-alpha.
3546 - Make "UpdateBridgesFromAuthority" torrc option work: when bridge
3547 users configure that and specify a bridge with an identity
3548 fingerprint, now they will lookup the bridge descriptor at the
3549 default bridge authority via a one-hop tunnel, but once circuits
3550 are established they will switch to a three-hop tunnel for later
3551 connections to the bridge authority. Bugfix in 0.2.0.3-alpha.
3553 o Major bugfixes (hidden services):
3554 - Hidden services were choosing introduction points uniquely by
3555 hexdigest, but when constructing the hidden service descriptor
3556 they merely wrote the (potentially ambiguous) nickname.
3557 - Clients now use the v2 intro format for hidden service
3558 connections: they specify their chosen rendezvous point by identity
3559 digest rather than by (potentially ambiguous) nickname. Both
3560 are bugfixes on 0.1.2.x, and they could speed up hidden service
3561 connections dramatically. Thanks to Karsten Loesing.
3563 o Minor features (security):
3564 - As a client, do not believe any server that tells us that an
3565 address maps to an internal address space.
3566 - Make it possible to enable HashedControlPassword and
3567 CookieAuthentication at the same time.
3569 o Minor features (guard nodes):
3570 - Tag every guard node in our state file with the version that
3571 we believe added it, or with our own version if we add it. This way,
3572 if a user temporarily runs an old version of Tor and then switches
3573 back to a new one, she doesn't automatically lose her guards.
3575 o Minor features (speed):
3576 - When implementing AES counter mode, update only the portions of the
3577 counter buffer that need to change, and don't keep separate
3578 network-order and host-order counters when they are the same (i.e.,
3579 on big-endian hosts.)
3581 o Minor features (controller):
3582 - Accept LF instead of CRLF on controller, since some software has a
3583 hard time generating real Internet newlines.
3584 - Add GETINFO values for the server status events
3585 "REACHABILITY_SUCCEEDED" and "GOOD_SERVER_DESCRIPTOR". Patch from
3589 - Routers no longer include bandwidth-history lines in their
3590 descriptors; this information is already available in extra-info
3591 documents, and including it in router descriptors took up 60%
3592 (!) of compressed router descriptor downloads. Completes
3593 implementation of proposal 104.
3594 - Remove the contrib scripts ExerciseServer.py, PathDemo.py,
3595 and TorControl.py, as they use the old v0 controller protocol,
3596 and are obsoleted by TorFlow anyway.
3597 - Drop support for v1 rendezvous descriptors, since we never used
3598 them anyway, and the code has probably rotted by now. Based on
3599 patch from Karsten Loesing.
3600 - On OSX, stop warning the user that kqueue support in libevent is
3601 "experimental", since it seems to have worked fine for ages.
3604 - When generating information telling us how to extend to a given
3605 router, do not try to include the nickname if it is absent. Fixes
3606 bug 467. Bugfix on 0.2.0.3-alpha.
3607 - Fix a user-triggerable (but not remotely-triggerable) segfault
3608 in expand_filename(). Bugfix on 0.1.2.x.
3609 - Fix a memory leak when freeing incomplete requests from DNSPort.
3610 Found by Niels Provos with valgrind. Bugfix on 0.2.0.1-alpha.
3611 - Don't try to access (or alter) the state file when running
3612 --list-fingerprint or --verify-config or --hash-password. (Resolves
3613 bug 499.) Bugfix on 0.1.2.x.
3614 - Servers used to decline to publish their DirPort if their
3615 BandwidthRate, RelayBandwidthRate, or MaxAdvertisedBandwidth
3616 were below a threshold. Now they only look at BandwidthRate and
3617 RelayBandwidthRate. Bugfix on 0.1.2.x.
3618 - Remove an optimization in the AES counter-mode code that assumed
3619 that the counter never exceeded 2^68. When the counter can be set
3620 arbitrarily as an IV (as it is by Karsten's new hidden services
3621 code), this assumption no longer holds. Bugfix on 0.1.2.x.
3622 - Resume listing "AUTHORITY" flag for authorities in network status.
3623 Bugfix on 0.2.0.3-alpha; reported by Alex de Joode.
3625 o Code simplifications and refactoring:
3626 - Revamp file-writing logic so we don't need to have the entire
3627 contents of a file in memory at once before we write to disk. Tor,
3629 - Turn "descriptor store" into a full-fledged type.
3630 - Move all NT services code into a separate source file.
3631 - Unify all code that computes medians, percentile elements, etc.
3632 - Get rid of a needless malloc when parsing address policies.
3635 Changes in version 0.1.2.17 - 2007-08-30
3636 Tor 0.1.2.17 features a new Vidalia version in the Windows and OS
3637 X bundles. Vidalia 0.0.14 makes authentication required for the
3638 ControlPort in the default configuration, which addresses important
3639 security risks. Everybody who uses Vidalia (or another controller)
3642 In addition, this Tor update fixes major load balancing problems with
3643 path selection, which should speed things up a lot once many people
3646 o Major bugfixes (security):
3647 - We removed support for the old (v0) control protocol. It has been
3648 deprecated since Tor 0.1.1.1-alpha, and keeping it secure has
3649 become more of a headache than it's worth.
3651 o Major bugfixes (load balancing):
3652 - When choosing nodes for non-guard positions, weight guards
3653 proportionally less, since they already have enough load. Patch
3655 - Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
3656 will allow fast Tor servers to get more attention.
3657 - When we're upgrading from an old Tor version, forget our current
3658 guards and pick new ones according to the new weightings. These
3659 three load balancing patches could raise effective network capacity
3660 by a factor of four. Thanks to Mike Perry for measurements.
3662 o Major bugfixes (stream expiration):
3663 - Expire not-yet-successful application streams in all cases if
3664 they've been around longer than SocksTimeout. Right now there are
3665 some cases where the stream will live forever, demanding a new
3666 circuit every 15 seconds. Fixes bug 454; reported by lodger.
3668 o Minor features (controller):
3669 - Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
3670 is valid before any authentication has been received. It tells
3671 a controller what kind of authentication is expected, and what
3672 protocol is spoken. Implements proposal 119.
3674 o Minor bugfixes (performance):
3675 - Save on most routerlist_assert_ok() calls in routerlist.c, thus
3676 greatly speeding up loading cached-routers from disk on startup.
3677 - Disable sentinel-based debugging for buffer code: we squashed all
3678 the bugs that this was supposed to detect a long time ago, and now
3679 its only effect is to change our buffer sizes from nice powers of
3680 two (which platform mallocs tend to like) to values slightly over
3681 powers of two (which make some platform mallocs sad).
3683 o Minor bugfixes (misc):
3684 - If exit bandwidth ever exceeds one third of total bandwidth, then
3685 use the correct formula to weight exit nodes when choosing paths.
3686 Based on patch from Mike Perry.
3687 - Choose perfectly fairly among routers when choosing by bandwidth and
3688 weighting by fraction of bandwidth provided by exits. Previously, we
3689 would choose with only approximate fairness, and correct ourselves
3690 if we ran off the end of the list.
3691 - If we require CookieAuthentication but we fail to write the
3692 cookie file, we would warn but not exit, and end up in a state
3693 where no controller could authenticate. Now we exit.
3694 - If we require CookieAuthentication, stop generating a new cookie
3695 every time we change any piece of our config.
3696 - Refuse to start with certain directory authority keys, and
3697 encourage people using them to stop.
3698 - Terminate multi-line control events properly. Original patch
3700 - Fix a minor memory leak when we fail to find enough suitable
3701 servers to choose a circuit.
3702 - Stop leaking part of the descriptor when we run into a particularly
3703 unparseable piece of it.
3706 Changes in version 0.2.0.6-alpha - 2007-08-26
3707 This sixth development snapshot features a new Vidalia version in the
3708 Windows and OS X bundles. Vidalia 0.0.14 makes authentication required for
3709 the ControlPort in the default configuration, which addresses important
3712 In addition, this snapshot fixes major load balancing problems
3713 with path selection, which should speed things up a lot once many
3714 people have upgraded. The directory authorities also use a new
3715 mean-time-between-failure approach to tracking which servers are stable,
3716 rather than just looking at the most recent uptime.
3718 o New directory authorities:
3719 - Set up Tonga as the default bridge directory authority.
3722 - Directory authorities now track servers by weighted
3723 mean-times-between-failures. When we have 4 or more days of data,
3724 use measured MTBF rather than declared uptime to decide whether
3725 to call a router Stable. Implements proposal 108.
3727 o Major bugfixes (load balancing):
3728 - When choosing nodes for non-guard positions, weight guards
3729 proportionally less, since they already have enough load. Patch
3731 - Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
3732 will allow fast Tor servers to get more attention.
3733 - When we're upgrading from an old Tor version, forget our current
3734 guards and pick new ones according to the new weightings. These
3735 three load balancing patches could raise effective network capacity
3736 by a factor of four. Thanks to Mike Perry for measurements.
3738 o Major bugfixes (descriptor parsing):
3739 - Handle unexpected whitespace better in malformed descriptors. Bug
3740 found using Benedikt Boss's new Tor fuzzer! Bugfix on 0.2.0.x.
3743 - There is now an ugly, temporary "desc/all-recent-extrainfo-hack"
3744 GETINFO for Torstat to use until it can switch to using extrainfos.
3745 - Optionally (if built with -DEXPORTMALLINFO) export the output
3746 of mallinfo via http, as tor/mallinfo.txt. Only accessible
3750 - Do not intermix bridge routers with controller-added
3751 routers. (Bugfix on 0.2.0.x)
3752 - Do not fail with an assert when accept() returns an unexpected
3753 address family. Addresses but does not wholly fix bug 483. (Bugfix
3755 - Let directory authorities startup even when they can't generate
3756 a descriptor immediately, e.g. because they don't know their
3758 - Stop putting the authentication cookie in a file called "0"
3759 in your working directory if you don't specify anything for the
3760 new CookieAuthFile option. Reported by Matt Edman.
3761 - Make it possible to read the PROTOCOLINFO response in a way that
3762 conforms to our control-spec. Reported by Matt Edman.
3763 - Fix a minor memory leak when we fail to find enough suitable
3764 servers to choose a circuit. Bugfix on 0.1.2.x.
3765 - Stop leaking part of the descriptor when we run into a particularly
3766 unparseable piece of it. Bugfix on 0.1.2.x.
3767 - Unmap the extrainfo cache file on exit.
3770 Changes in version 0.2.0.5-alpha - 2007-08-19
3771 This fifth development snapshot fixes compilation on Windows again;
3772 fixes an obnoxious client-side bug that slowed things down and put
3773 extra load on the network; gets us closer to using the v3 directory
3774 voting scheme; makes it easier for Tor controllers to use cookie-based
3775 authentication; and fixes a variety of other bugs.
3778 - Version 1 directories are no longer generated in full. Instead,
3779 authorities generate and serve "stub" v1 directories that list
3780 no servers. This will stop Tor versions 0.1.0.x and earlier from
3781 working, but (for security reasons) nobody should be running those
3784 o Major bugfixes (compilation, 0.2.0.x):
3785 - Try to fix Win32 compilation again: improve checking for IPv6 types.
3786 - Try to fix MSVC compilation: build correctly on platforms that do
3787 not define s6_addr16 or s6_addr32.
3788 - Fix compile on platforms without getaddrinfo: bug found by Li-Hui
3791 o Major bugfixes (stream expiration):
3792 - Expire not-yet-successful application streams in all cases if
3793 they've been around longer than SocksTimeout. Right now there are
3794 some cases where the stream will live forever, demanding a new
3795 circuit every 15 seconds. Bugfix on 0.1.2.7-alpha; fixes bug 454;
3798 o Minor features (directory servers):
3799 - When somebody requests a list of statuses or servers, and we have
3800 none of those, return a 404 rather than an empty 200.
3802 o Minor features (directory voting):
3803 - Store v3 consensus status consensuses on disk, and reload them
3806 o Minor features (security):
3807 - Warn about unsafe ControlPort configurations.
3808 - Refuse to start with certain directory authority keys, and
3809 encourage people using them to stop.
3811 o Minor features (controller):
3812 - Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
3813 is valid before any authentication has been received. It tells
3814 a controller what kind of authentication is expected, and what
3815 protocol is spoken. Implements proposal 119.
3816 - New config option CookieAuthFile to choose a new location for the
3817 cookie authentication file, and config option
3818 CookieAuthFileGroupReadable to make it group-readable.
3820 o Minor features (unit testing):
3821 - Add command-line arguments to unit-test executable so that we can
3822 invoke any chosen test from the command line rather than having
3823 to run the whole test suite at once; and so that we can turn on
3824 logging for the unit tests.
3826 o Minor bugfixes (on 0.1.2.x):
3827 - If we require CookieAuthentication but we fail to write the
3828 cookie file, we would warn but not exit, and end up in a state
3829 where no controller could authenticate. Now we exit.
3830 - If we require CookieAuthentication, stop generating a new cookie
3831 every time we change any piece of our config.
3832 - When loading bandwidth history, do not believe any information in
3833 the future. Fixes bug 434.
3834 - When loading entry guard information, do not believe any information
3836 - When we have our clock set far in the future and generate an
3837 onion key, then re-set our clock to be correct, we should not stop
3838 the onion key from getting rotated.
3839 - Clean up torrc sample config file.
3840 - Do not automatically run configure from autogen.sh. This
3841 non-standard behavior tended to annoy people who have built other
3844 o Minor bugfixes (on 0.2.0.x):
3845 - Fix a bug with AutomapHostsOnResolve that would always cause
3846 the second request to fail. Bug reported by Kate. Bugfix on
3848 - Fix a bug in ADDRMAP controller replies that would sometimes
3849 try to print a NULL. Patch from tup.
3850 - Read v3 directory authority keys from the right location.
3851 - Numerous bugfixes to directory voting code.
3854 Changes in version 0.1.2.16 - 2007-08-01
3855 Tor 0.1.2.16 fixes a critical security vulnerability that allows a
3856 remote attacker in certain situations to rewrite the user's torrc
3857 configuration file. This can completely compromise anonymity of users
3858 in most configurations, including those running the Vidalia bundles,
3859 TorK, etc. Or worse.
3861 o Major security fixes:
3862 - Close immediately after missing authentication on control port;
3863 do not allow multiple authentication attempts.
3866 Changes in version 0.2.0.4-alpha - 2007-08-01
3867 This fourth development snapshot fixes a critical security vulnerability
3868 for most users, specifically those running Vidalia, TorK, etc. Everybody
3869 should upgrade to either 0.1.2.16 or 0.2.0.4-alpha.
3871 o Major security fixes:
3872 - Close immediately after missing authentication on control port;
3873 do not allow multiple authentication attempts.
3875 o Major bugfixes (compilation):
3876 - Fix win32 compilation: apparently IN_ADDR and IN6_ADDR are already
3879 o Minor features (performance):
3880 - Be even more aggressive about releasing RAM from small
3881 empty buffers. Thanks to our free-list code, this shouldn't be too
3882 performance-intensive.
3883 - Disable sentinel-based debugging for buffer code: we squashed all
3884 the bugs that this was supposed to detect a long time ago, and
3885 now its only effect is to change our buffer sizes from nice
3886 powers of two (which platform mallocs tend to like) to values
3887 slightly over powers of two (which make some platform mallocs sad).
3888 - Log malloc statistics from mallinfo() on platforms where it
3892 Changes in version 0.2.0.3-alpha - 2007-07-29
3893 This third development snapshot introduces new experimental
3894 blocking-resistance features and a preliminary version of the v3
3895 directory voting design, and includes many other smaller features
3899 - The first pieces of our "bridge" design for blocking-resistance
3900 are implemented. People can run bridge directory authorities;
3901 people can run bridges; and people can configure their Tor clients
3902 with a set of bridges to use as the first hop into the Tor network.
3903 See http://archives.seul.org/or/talk/Jul-2007/msg00249.html for
3905 - Create listener connections before we setuid to the configured
3906 User and Group. Now non-Windows users can choose port values
3907 under 1024, start Tor as root, and have Tor bind those ports
3908 before it changes to another UID. (Windows users could already
3910 - Added a new ConstrainedSockets config option to set SO_SNDBUF and
3911 SO_RCVBUF on TCP sockets. Hopefully useful for Tor servers running
3912 on "vserver" accounts. (Patch from coderman.)
3913 - Be even more aggressive about separating local traffic from relayed
3914 traffic when RelayBandwidthRate is set. (Refines proposal 111.)
3916 o Major features (experimental):
3917 - First cut of code for "v3 dir voting": directory authorities will
3918 vote on a common network status document rather than each publishing
3919 their own opinion. This code needs more testing and more corner-case
3920 handling before it's ready for use.
3923 - Directory authorities now call routers Fast if their bandwidth is
3924 at least 100KB/s, and consider their bandwidth adequate to be a
3925 Guard if it is at least 250KB/s, no matter the medians. This fix
3926 complements proposal 107. [Bugfix on 0.1.2.x]
3927 - Directory authorities now never mark more than 3 servers per IP as
3928 Valid and Running. (Implements proposal 109, by Kevin Bauer and
3930 - Minor change to organizationName and commonName generation
3931 procedures in TLS certificates during Tor handshakes, to invalidate
3932 some earlier censorware approaches. This is not a long-term
3933 solution, but applying it will give us a bit of time to look into
3934 the epidemiology of countermeasures as they spread.
3936 o Major bugfixes (directory):
3937 - Rewrite directory tokenization code to never run off the end of
3938 a string. Fixes bug 455. Patch from croup. [Bugfix on 0.1.2.x]
3940 o Minor features (controller):
3941 - Add a SOURCE_ADDR field to STREAM NEW events so that controllers can
3942 match requests to applications. (Patch from Robert Hogan.)
3943 - Report address and port correctly on connections to DNSPort. (Patch
3945 - Add a RESOLVE command to launch hostname lookups. (Original patch
3947 - Add GETINFO status/enough-dir-info to let controllers tell whether
3948 Tor has downloaded sufficient directory information. (Patch
3950 - You can now use the ControlSocket option to tell Tor to listen for
3951 controller connections on Unix domain sockets on systems that
3952 support them. (Patch from Peter Palfrader.)
3953 - STREAM NEW events are generated for DNSPort requests and for
3954 tunneled directory connections. (Patch from Robert Hogan.)
3955 - New "GETINFO address-mappings/*" command to get address mappings
3956 with expiry information. "addr-mappings/*" is now deprecated.
3959 o Minor features (misc):
3960 - Merge in some (as-yet-unused) IPv6 address manipulation code. (Patch
3962 - The tor-gencert tool for v3 directory authorities now creates all
3963 files as readable to the file creator only, and write-protects
3964 the authority identity key.
3965 - When dumping memory usage, list bytes used in buffer memory
3967 - When running with dmalloc, dump more stats on hup and on exit.
3968 - Directory authorities now fail quickly and (relatively) harmlessly
3969 if they generate a network status document that is somehow
3972 o Traffic load balancing improvements:
3973 - If exit bandwidth ever exceeds one third of total bandwidth, then
3974 use the correct formula to weight exit nodes when choosing paths.
3975 (Based on patch from Mike Perry.)
3976 - Choose perfectly fairly among routers when choosing by bandwidth and
3977 weighting by fraction of bandwidth provided by exits. Previously, we
3978 would choose with only approximate fairness, and correct ourselves
3979 if we ran off the end of the list. [Bugfix on 0.1.2.x]
3981 o Performance improvements:
3982 - Be more aggressive with freeing buffer RAM or putting it on the
3984 - Use Critical Sections rather than Mutexes for synchronizing threads
3985 on win32; Mutexes are heavier-weight, and designed for synchronizing
3988 o Deprecated and removed features:
3989 - RedirectExits is now deprecated.
3990 - Stop allowing address masks that do not correspond to bit prefixes.
3991 We have warned about these for a really long time; now it's time
3992 to reject them. (Patch from croup.)
3994 o Minor bugfixes (directory):
3995 - Fix another crash bug related to extra-info caching. (Bug found by
3996 Peter Palfrader.) [Bugfix on 0.2.0.2-alpha]
3997 - Directories no longer return a "304 not modified" when they don't
3998 have the networkstatus the client asked for. Also fix a memory
3999 leak when returning 304 not modified. [Bugfixes on 0.2.0.2-alpha]
4000 - We had accidentally labelled 0.1.2.x directory servers as not
4001 suitable for begin_dir requests, and had labelled no directory
4002 servers as suitable for uploading extra-info documents. [Bugfix
4005 o Minor bugfixes (dns):
4006 - Fix a crash when DNSPort is set more than once. (Patch from Robert
4007 Hogan.) [Bugfix on 0.2.0.2-alpha]
4008 - Add DNSPort connections to the global connection list, so that we
4009 can time them out correctly. (Bug found by Robert Hogan.) [Bugfix
4011 - Fix a dangling reference that could lead to a crash when DNSPort is
4012 changed or closed (Patch from Robert Hogan.) [Bugfix on
4015 o Minor bugfixes (controller):
4016 - Provide DNS expiry times in GMT, not in local time. For backward
4017 compatibility, ADDRMAP events only provide GMT expiry in an extended
4018 field. "GETINFO address-mappings" always does the right thing.
4019 - Use CRLF line endings properly in NS events.
4020 - Terminate multi-line control events properly. (Original patch
4021 from tup.) [Bugfix on 0.1.2.x-alpha]
4022 - Do not include spaces in SOURCE_ADDR fields in STREAM
4023 events. Resolves bug 472. [Bugfix on 0.2.0.x-alpha]
4026 Changes in version 0.1.2.15 - 2007-07-17
4027 Tor 0.1.2.15 fixes several crash bugs, fixes some anonymity-related
4028 problems, fixes compilation on BSD, and fixes a variety of other
4029 bugs. Everybody should upgrade.
4031 o Major bugfixes (compilation):
4032 - Fix compile on FreeBSD/NetBSD/OpenBSD. Oops.
4034 o Major bugfixes (crashes):
4035 - Try even harder not to dereference the first character after
4036 an mmap(). Reported by lodger.
4037 - Fix a crash bug in directory authorities when we re-number the
4038 routerlist while inserting a new router.
4039 - When the cached-routers file is an even multiple of the page size,
4040 don't run off the end and crash. (Fixes bug 455; based on idea
4042 - Fix eventdns.c behavior on Solaris: It is critical to include
4043 orconfig.h _before_ sys/types.h, so that we can get the expected
4044 definition of _FILE_OFFSET_BITS.
4046 o Major bugfixes (security):
4047 - Fix a possible buffer overrun when using BSD natd support. Bug
4049 - When sending destroy cells from a circuit's origin, don't include
4050 the reason for tearing down the circuit. The spec says we didn't,
4051 and now we actually don't. Reported by lodger.
4052 - Keep streamids from different exits on a circuit separate. This
4053 bug may have allowed other routers on a given circuit to inject
4054 cells into streams. Reported by lodger; fixes bug 446.
4055 - If there's a never-before-connected-to guard node in our list,
4056 never choose any guards past it. This way we don't expand our
4057 guard list unless we need to.
4059 o Minor bugfixes (guard nodes):
4060 - Weight guard selection by bandwidth, so that low-bandwidth nodes
4061 don't get overused as guards.
4063 o Minor bugfixes (directory):
4064 - Correctly count the number of authorities that recommend each
4065 version. Previously, we were under-counting by 1.
4066 - Fix a potential crash bug when we load many server descriptors at
4067 once and some of them make others of them obsolete. Fixes bug 458.
4069 o Minor bugfixes (hidden services):
4070 - Stop tearing down the whole circuit when the user asks for a
4071 connection to a port that the hidden service didn't configure.
4074 o Minor bugfixes (misc):
4075 - On Windows, we were preventing other processes from reading
4076 cached-routers while Tor was running. Reported by janbar.
4077 - Fix a possible (but very unlikely) bug in picking routers by
4078 bandwidth. Add a log message to confirm that it is in fact
4079 unlikely. Patch from lodger.
4080 - Backport a couple of memory leak fixes.
4081 - Backport miscellaneous cosmetic bugfixes.
4084 Changes in version 0.2.0.2-alpha - 2007-06-02
4085 o Major bugfixes on 0.2.0.1-alpha:
4086 - Fix an assertion failure related to servers without extra-info digests.
4087 Resolves bugs 441 and 442.
4089 o Minor features (directory):
4090 - Support "If-Modified-Since" when answering HTTP requests for
4091 directories, running-routers documents, and network-status documents.
4092 (There's no need to support it for router descriptors, since those
4093 are downloaded by descriptor digest.)
4095 o Minor build issues:
4096 - Clear up some MIPSPro compiler warnings.
4097 - When building from a tarball on a machine that happens to have SVK
4098 installed, report the micro-revision as whatever version existed
4099 in the tarball, not as "x".
4102 Changes in version 0.2.0.1-alpha - 2007-06-01
4103 This early development snapshot provides new features for people running
4104 Tor as both a client and a server (check out the new RelayBandwidth
4105 config options); lets Tor run as a DNS proxy; and generally moves us
4106 forward on a lot of fronts.
4108 o Major features, server usability:
4109 - New config options RelayBandwidthRate and RelayBandwidthBurst:
4110 a separate set of token buckets for relayed traffic. Right now
4111 relayed traffic is defined as answers to directory requests, and
4112 OR connections that don't have any local circuits on them.
4114 o Major features, client usability:
4115 - A client-side DNS proxy feature to replace the need for
4116 dns-proxy-tor: Just set "DNSPort 9999", and Tor will now listen
4117 for DNS requests on port 9999, use the Tor network to resolve them
4118 anonymously, and send the reply back like a regular DNS server.
4119 The code still only implements a subset of DNS.
4120 - Make PreferTunneledDirConns and TunnelDirConns work even when
4121 we have no cached directory info. This means Tor clients can now
4122 do all of their connections protected by TLS.
4124 o Major features, performance and efficiency:
4125 - Directory authorities accept and serve "extra info" documents for
4126 routers. These documents contain fields from router descriptors
4127 that aren't usually needed, and that use a lot of excess
4128 bandwidth. Once these fields are removed from router descriptors,
4129 the bandwidth savings should be about 60%. [Partially implements
4131 - Servers upload extra-info documents to any authority that accepts
4132 them. Authorities (and caches that have been configured to download
4133 extra-info documents) download them as needed. [Partially implements
4135 - Change the way that Tor buffers data that it is waiting to write.
4136 Instead of queueing data cells in an enormous ring buffer for each
4137 client->OR or OR->OR connection, we now queue cells on a separate
4138 queue for each circuit. This lets us use less slack memory, and
4139 will eventually let us be smarter about prioritizing different kinds
4141 - Use memory pools to allocate cells with better speed and memory
4142 efficiency, especially on platforms where malloc() is inefficient.
4143 - Stop reading on edge connections when their corresponding circuit
4144 buffers are full; start again as the circuits empty out.
4146 o Major features, other:
4147 - Add an HSAuthorityRecordStats option that hidden service authorities
4148 can use to track statistics of overall hidden service usage without
4149 logging information that would be very useful to an attacker.
4150 - Start work implementing multi-level keys for directory authorities:
4151 Add a standalone tool to generate key certificates. (Proposal 103.)
4154 - Directory authorities now call routers Stable if they have an
4155 uptime of at least 30 days, even if that's not the median uptime
4156 in the network. Implements proposal 107, suggested by Kevin Bauer
4159 o Minor fixes (resource management):
4160 - Count the number of open sockets separately from the number
4161 of active connection_t objects. This will let us avoid underusing
4162 our allocated connection limit.
4163 - We no longer use socket pairs to link an edge connection to an
4164 anonymous directory connection or a DirPort test connection.
4165 Instead, we track the link internally and transfer the data
4166 in-process. This saves two sockets per "linked" connection (at the
4167 client and at the server), and avoids the nasty Windows socketpair()
4169 - Keep unused 4k and 16k buffers on free lists, rather than wasting 8k
4170 for every single inactive connection_t. Free items from the
4171 4k/16k-buffer free lists when they haven't been used for a while.
4173 o Minor features (build):
4174 - Make autoconf search for libevent, openssl, and zlib consistently.
4175 - Update deprecated macros in configure.in.
4176 - When warning about missing headers, tell the user to let us
4177 know if the compile succeeds anyway, so we can downgrade the
4179 - Include the current subversion revision as part of the version
4180 string: either fetch it directly if we're in an SVN checkout, do
4181 some magic to guess it if we're in an SVK checkout, or use
4182 the last-detected version if we're building from a .tar.gz.
4183 Use this version consistently in log messages.
4185 o Minor features (logging):
4186 - Always prepend "Bug: " to any log message about a bug.
4187 - Put a platform string (e.g. "Linux i686") in the startup log
4188 message, so when people paste just their logs, we know if it's
4189 OpenBSD or Windows or what.
4190 - When logging memory usage, break down memory used in buffers by
4193 o Minor features (directory system):
4194 - New config option V2AuthoritativeDirectory that all directory
4195 authorities should set. This will let future authorities choose
4196 not to serve V2 directory information.
4197 - Directory authorities allow multiple router descriptors and/or extra
4198 info documents to be uploaded in a single go. This will make
4199 implementing proposal 104 simpler.
4201 o Minor features (controller):
4202 - Add a new config option __DisablePredictedCircuits designed for
4203 use by the controller, when we don't want Tor to build any circuits
4205 - Let the controller specify HOP=%d as an argument to ATTACHSTREAM,
4206 so we can exit from the middle of the circuit.
4207 - Implement "getinfo status/circuit-established".
4208 - Implement "getinfo status/version/..." so a controller can tell
4209 whether the current version is recommended, and whether any versions
4210 are good, and how many authorities agree. (Patch from shibz.)
4212 o Minor features (hidden services):
4213 - Allow multiple HiddenServicePort directives with the same virtual
4214 port; when they occur, the user is sent round-robin to one
4215 of the target ports chosen at random. Partially fixes bug 393 by
4216 adding limited ad-hoc round-robining.
4218 o Minor features (other):
4220 - Add a new AutomapHostsOnResolve option: when it is enabled, any
4221 resolve request for hosts matching a given pattern causes Tor to
4222 generate an internal virtual address mapping for that host. This
4223 allows DNSPort to work sensibly with hidden service users. By
4224 default, .exit and .onion addresses are remapped; the list of
4225 patterns can be reconfigured with AutomapHostsSuffixes.
4226 - Add an "-F" option to tor-resolve to force a resolve for a .onion
4227 address. Thanks to the AutomapHostsOnResolve option, this is no
4228 longer a completely silly thing to do.
4229 - If Tor is invoked from something that isn't a shell (e.g. Vidalia),
4230 now we expand "-f ~/.tor/torrc" correctly. Suggested by Matt Edman.
4231 - Treat "2gb" when given in torrc for a bandwidth as meaning 2gb,
4232 minus 1 byte: the actual maximum declared bandwidth.
4235 - Removed support for the old binary "version 0" controller protocol.
4236 This has been deprecated since 0.1.1, and warnings have been issued
4237 since 0.1.2. When we encounter a v0 control message, we now send
4238 back an error and close the connection.
4239 - Remove the old "dns worker" server DNS code: it hasn't been default
4240 since 0.1.2.2-alpha, and all the servers seem to be using the new
4243 o Minor bugfixes (portability):
4244 - Even though Windows is equally happy with / and \ as path separators,
4245 try to use \ consistently on Windows and / consistently on Unix: it
4246 makes the log messages nicer.
4247 - Correctly report platform name on Windows 95 OSR2 and Windows 98 SE.
4248 - Read resolv.conf files correctly on platforms where read() returns
4249 partial results on small file reads.
4251 o Minor bugfixes (directory):
4252 - Correctly enforce that elements of directory objects do not appear
4253 more often than they are allowed to appear.
4254 - When we are reporting the DirServer line we just parsed, we were
4255 logging the second stanza of the key fingerprint, not the first.
4257 o Minor bugfixes (logging):
4258 - When we hit an EOF on a log (probably because we're shutting down),
4259 don't try to remove the log from the list: just mark it as
4260 unusable. (Bulletproofs against bug 222.)
4262 o Minor bugfixes (other):
4263 - In the exitlist script, only consider the most recently published
4264 server descriptor for each server. Also, when the user requests
4265 a list of servers that _reject_ connections to a given address,
4266 explicitly exclude the IPs that also have servers that accept
4267 connections to that address. (Resolves bug 405.)
4268 - Stop allowing hibernating servers to be "stable" or "fast".
4269 - On Windows, we were preventing other processes from reading
4270 cached-routers while Tor was running. (Reported by janbar)
4271 - Make the NodeFamilies config option work. (Reported by
4272 lodger -- it has never actually worked, even though we added it
4274 - Check return values from pthread_mutex functions.
4275 - Don't save non-general-purpose router descriptors to the disk cache,
4276 because we have no way of remembering what their purpose was when
4278 - Add even more asserts to hunt down bug 417.
4279 - Build without verbose warnings even on (not-yet-released) gcc 4.2.
4280 - Fix a possible (but very unlikely) bug in picking routers by bandwidth.
4281 Add a log message to confirm that it is in fact unlikely.
4283 o Minor bugfixes (controller):
4284 - Make 'getinfo fingerprint' return a 551 error if we're not a
4285 server, so we match what the control spec claims we do. Reported
4287 - Fix a typo in an error message when extendcircuit fails that
4288 caused us to not follow the \r\n-based delimiter protocol. Reported
4291 o Code simplifications and refactoring:
4292 - Stop passing around circuit_t and crypt_path_t pointers that are
4293 implicit in other procedure arguments.
4294 - Drop the old code to choke directory connections when the
4295 corresponding OR connections got full: thanks to the cell queue
4296 feature, OR conns don't get full any more.
4297 - Make dns_resolve() handle attaching connections to circuits
4298 properly, so the caller doesn't have to.
4299 - Rename wants_to_read and wants_to_write to read/write_blocked_on_bw.
4300 - Keep the connection array as a dynamic smartlist_t, rather than as
4301 a fixed-sized array. This is important, as the number of connections
4302 is becoming increasingly decoupled from the number of sockets.
4305 Changes in version 0.1.2.14 - 2007-05-25
4306 Tor 0.1.2.14 changes the addresses of two directory authorities (this
4307 change especially affects those who serve or use hidden services),
4308 and fixes several other crash- and security-related bugs.
4310 o Directory authority changes:
4311 - Two directory authorities (moria1 and moria2) just moved to new
4312 IP addresses. This change will particularly affect those who serve
4313 or use hidden services.
4315 o Major bugfixes (crashes):
4316 - If a directory server runs out of space in the connection table
4317 as it's processing a begin_dir request, it will free the exit stream
4318 but leave it attached to the circuit, leading to unpredictable
4319 behavior. (Reported by seeess, fixes bug 425.)
4320 - Fix a bug in dirserv_remove_invalid() that would cause authorities
4321 to corrupt memory under some really unlikely scenarios.
4322 - Tighten router parsing rules. (Bugs reported by Benedikt Boss.)
4323 - Avoid segfaults when reading from mmaped descriptor file. (Reported
4326 o Major bugfixes (security):
4327 - When choosing an entry guard for a circuit, avoid using guards
4328 that are in the same family as the chosen exit -- not just guards
4329 that are exactly the chosen exit. (Reported by lodger.)
4331 o Major bugfixes (resource management):
4332 - If a directory authority is down, skip it when deciding where to get
4333 networkstatus objects or descriptors. Otherwise we keep asking
4334 every 10 seconds forever. Fixes bug 384.
4335 - Count it as a failure if we fetch a valid network-status but we
4336 don't want to keep it. Otherwise we'll keep fetching it and keep
4337 not wanting to keep it. Fixes part of bug 422.
4338 - If all of our dirservers have given us bad or no networkstatuses
4339 lately, then stop hammering them once per minute even when we
4340 think they're failed. Fixes another part of bug 422.
4343 - Actually set the purpose correctly for descriptors inserted with
4345 - When we have k non-v2 authorities in our DirServer config,
4346 we ignored the last k authorities in the list when updating our
4348 - Correctly back-off from requesting router descriptors that we are
4349 having a hard time downloading.
4350 - Read resolv.conf files correctly on platforms where read() returns
4351 partial results on small file reads.
4352 - Don't rebuild the entire router store every time we get 32K of
4353 routers: rebuild it when the journal gets very large, or when
4354 the gaps in the store get very large.
4357 - When routers publish SVN revisions in their router descriptors,
4358 authorities now include those versions correctly in networkstatus
4360 - Warn when using a version of libevent before 1.3b to run a server on
4361 OSX or BSD: these versions interact badly with userspace threads.
4364 Changes in version 0.1.2.13 - 2007-04-24
4365 This release features some major anonymity fixes, such as safer path
4366 selection; better client performance; faster bootstrapping, better
4367 address detection, and better DNS support for servers; write limiting as
4368 well as read limiting to make servers easier to run; and a huge pile of
4369 other features and bug fixes. The bundles also ship with Vidalia 0.0.11.
4371 Tor 0.1.2.13 is released in memory of Rob Levin (1955-2006), aka lilo
4372 of the Freenode IRC network, remembering his patience and vision for
4373 free speech on the Internet.
4376 - Fix a memory leak when we ask for "all" networkstatuses and we
4377 get one we don't recognize.
4378 - Add more asserts to hunt down bug 417.
4379 - Disable kqueue on OS X 10.3 and earlier, to fix bug 371.
4382 Changes in version 0.1.2.12-rc - 2007-03-16
4384 - Fix an infinite loop introduced in 0.1.2.7-alpha when we serve
4385 directory information requested inside Tor connections (i.e. via
4386 begin_dir cells). It only triggered when the same connection was
4387 serving other data at the same time. Reported by seeess.
4390 - When creating a circuit via the controller, send a 'launched'
4391 event when we're done, so we follow the spec better.
4394 Changes in version 0.1.2.11-rc - 2007-03-15
4395 o Minor bugfixes (controller), reported by daejees:
4396 - Correct the control spec to match how the code actually responds
4397 to 'getinfo addr-mappings/*'.
4398 - The control spec described a GUARDS event, but the code
4399 implemented a GUARD event. Standardize on GUARD, but let people
4403 Changes in version 0.1.2.10-rc - 2007-03-07
4404 o Major bugfixes (Windows):
4405 - Do not load the NT services library functions (which may not exist)
4406 just to detect if we're a service trying to shut down. Now we run
4407 on Win98 and friends again.
4409 o Minor bugfixes (other):
4410 - Clarify a couple of log messages.
4411 - Fix a misleading socks5 error number.
4414 Changes in version 0.1.2.9-rc - 2007-03-02
4415 o Major bugfixes (Windows):
4416 - On MinGW, use "%I64u" to printf/scanf 64-bit integers, instead
4417 of the usual GCC "%llu". This prevents a bug when saving 64-bit
4418 int configuration values: the high-order 32 bits would get
4419 truncated. In particular, we were being bitten by the default
4420 MaxAdvertisedBandwidth of 128 TB turning into 0. (Fixes bug 400
4421 and maybe also bug 397.)
4423 o Minor bugfixes (performance):
4424 - Use OpenSSL's AES implementation on platforms where it's faster.
4425 This could save us as much as 10% CPU usage.
4427 o Minor bugfixes (server):
4428 - Do not rotate onion key immediately after setting it for the first
4431 o Minor bugfixes (directory authorities):
4432 - Stop calling servers that have been hibernating for a long time
4433 "stable". Also, stop letting hibernating or obsolete servers affect
4434 uptime and bandwidth cutoffs.
4435 - Stop listing hibernating servers in the v1 directory.
4437 o Minor bugfixes (hidden services):
4438 - Upload hidden service descriptors slightly less often, to reduce
4439 load on authorities.
4441 o Minor bugfixes (other):
4442 - Fix an assert that could trigger if a controller quickly set then
4443 cleared EntryNodes. (Bug found by Udo van den Heuvel.)
4444 - On architectures where sizeof(int)>4, still clamp declarable bandwidth
4446 - Fix a potential race condition in the rpm installer. Found by
4448 - Try to fix eventdns warnings once and for all: do not treat a dns rcode
4449 of 2 as indicating that the server is completely bad; it sometimes
4450 means that the server is just bad for the request in question. (may fix
4451 the last of bug 326.)
4452 - Disable encrypted directory connections when we don't have a server
4453 descriptor for the destination. We'll get this working again in
4457 Changes in version 0.1.2.8-beta - 2007-02-26
4458 o Major bugfixes (crashes):
4459 - Stop crashing when the controller asks us to resetconf more than
4460 one config option at once. (Vidalia 0.0.11 does this.)
4461 - Fix a crash that happened on Win98 when we're given command-line
4462 arguments: don't try to load NT service functions from advapi32.dll
4463 except when we need them. (Bug introduced in 0.1.2.7-alpha;
4465 - Fix a longstanding obscure crash bug that could occur when
4466 we run out of DNS worker processes. (Resolves bug 390.)
4468 o Major bugfixes (hidden services):
4469 - Correctly detect whether hidden service descriptor downloads are
4470 in-progress. (Suggested by Karsten Loesing; fixes bug 399.)
4472 o Major bugfixes (accounting):
4473 - When we start during an accounting interval before it's time to wake
4474 up, remember to wake up at the correct time. (May fix bug 342.)
4476 o Minor bugfixes (controller):
4477 - Give the controller END_STREAM_REASON_DESTROY events _before_ we
4478 clear the corresponding on_circuit variable, and remember later
4479 that we don't need to send a redundant CLOSED event. (Resolves part
4481 - Report events where a resolve succeeded or where we got a socks
4482 protocol error correctly, rather than calling both of them
4484 - Change reported stream target addresses to IP consistently when
4485 we finally get the IP from an exit node.
4486 - Send log messages to the controller even if they happen to be very
4489 o Minor bugfixes (other):
4490 - Display correct results when reporting which versions are
4491 recommended, and how recommended they are. (Resolves bug 383.)
4492 - Improve our estimates for directory bandwidth to be less random:
4493 guess that an unrecognized directory will have the average bandwidth
4494 from all known directories, not that it will have the average
4495 bandwidth from those directories earlier than it on the list.
4496 - If we start a server with ClientOnly 1, then set ClientOnly to 0
4497 and hup, stop triggering an assert based on an empty onion_key.
4498 - On platforms with no working mmap() equivalent, don't warn the
4499 user when cached-routers doesn't exist.
4500 - Warn the user when mmap() [or its equivalent] fails for some reason
4501 other than file-not-found.
4502 - Don't warn the user when cached-routers.new doesn't exist: that's
4503 perfectly fine when starting up for the first time.
4504 - When EntryNodes are configured, rebuild the guard list to contain,
4505 in order: the EntryNodes that were guards before; the rest of the
4506 EntryNodes; the nodes that were guards before.
4507 - Mask out all signals in sub-threads; only the libevent signal
4508 handler should be processing them. This should prevent some crashes
4509 on some machines using pthreads. (Patch from coderman.)
4510 - Fix switched arguments on memset in the implementation of
4511 tor_munmap() for systems with no mmap() call.
4512 - When Tor receives a router descriptor that it asked for, but
4513 no longer wants (because it has received fresh networkstatuses
4514 in the meantime), do not warn the user. Cache the descriptor if
4515 we're a cache; drop it if we aren't.
4516 - Make earlier entry guards _really_ get retried when the network
4518 - On a malformed DNS reply, always give an error to the corresponding
4520 - Build with recent libevents on platforms that do not define the
4521 nonstandard types "u_int8_t" and friends.
4523 o Minor features (controller):
4524 - Warn the user when an application uses the obsolete binary v0
4525 control protocol. We're planning to remove support for it during
4526 the next development series, so it's good to give people some
4528 - Add STREAM_BW events to report per-entry-stream bandwidth
4529 use. (Patch from Robert Hogan.)
4530 - Rate-limit SIGNEWNYM signals in response to controllers that
4531 impolitely generate them for every single stream. (Patch from
4532 mwenge; closes bug 394.)
4533 - Make REMAP stream events have a SOURCE (cache or exit), and
4534 make them generated in every case where we get a successful
4535 connected or resolved cell.
4537 o Minor bugfixes (performance):
4538 - Call router_have_min_dir_info half as often. (This is showing up in
4539 some profiles, but not others.)
4540 - When using GCC, make log_debug never get called at all, and its
4541 arguments never get evaluated, when no debug logs are configured.
4542 (This is showing up in some profiles, but not others.)
4545 - Remove some never-implemented options. Mark PathlenCoinWeight as
4547 - Implement proposal 106: Stop requiring clients to have well-formed
4548 certificates; stop checking nicknames in certificates. (Clients
4549 have certificates so that they can look like Tor servers, but in
4550 the future we might want to allow them to look like regular TLS
4551 clients instead. Nicknames in certificates serve no purpose other
4552 than making our protocol easier to recognize on the wire.)
4553 - Revise messages on handshake failure again to be even more clear about
4554 which are incoming connections and which are outgoing.
4555 - Discard any v1 directory info that's over 1 month old (for
4556 directories) or over 1 week old (for running-routers lists).
4557 - Do not warn when individual nodes in the configuration's EntryNodes,
4558 ExitNodes, etc are down: warn only when all possible nodes
4559 are down. (Fixes bug 348.)
4560 - Always remove expired routers and networkstatus docs before checking
4561 whether we have enough information to build circuits. (Fixes
4563 - Put a lower-bound on MaxAdvertisedBandwidth.
4566 Changes in version 0.1.2.7-alpha - 2007-02-06
4567 o Major bugfixes (rate limiting):
4568 - Servers decline directory requests much more aggressively when
4569 they're low on bandwidth. Otherwise they end up queueing more and
4570 more directory responses, which can't be good for latency.
4571 - But never refuse directory requests from local addresses.
4572 - Fix a memory leak when sending a 503 response for a networkstatus
4574 - Be willing to read or write on local connections (e.g. controller
4575 connections) even when the global rate limiting buckets are empty.
4576 - If our system clock jumps back in time, don't publish a negative
4577 uptime in the descriptor. Also, don't let the global rate limiting
4578 buckets go absurdly negative.
4579 - Flush local controller connection buffers periodically as we're
4580 writing to them, so we avoid queueing 4+ megabytes of data before
4583 o Major bugfixes (NT services):
4584 - Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
4585 command-line flag so that admins can override the default by saying
4586 "tor --service install --user "SomeUser"". This will not affect
4587 existing installed services. Also, warn the user that the service
4588 will look for its configuration file in the service user's
4589 %appdata% directory. (We can't do the 'hardwire the user's appdata
4590 directory' trick any more, since we may not have read access to that
4593 o Major bugfixes (other):
4594 - Previously, we would cache up to 16 old networkstatus documents
4595 indefinitely, if they came from nontrusted authorities. Now we
4596 discard them if they are more than 10 days old.
4597 - Fix a crash bug in the presence of DNS hijacking (reported by Andrew
4599 - Detect and reject malformed DNS responses containing circular
4601 - If exits are rare enough that we're not marking exits as guards,
4602 ignore exit bandwidth when we're deciding the required bandwidth
4604 - When we're handling a directory connection tunneled over Tor,
4605 don't fill up internal memory buffers with all the data we want
4606 to tunnel; instead, only add it if the OR connection that will
4607 eventually receive it has some room for it. (This can lead to
4608 slowdowns in tunneled dir connections; a better solution will have
4611 o Minor bugfixes (dns):
4612 - Add some defensive programming to eventdns.c in an attempt to catch
4613 possible memory-stomping bugs.
4614 - Detect and reject DNS replies containing IPv4 or IPv6 records with
4615 an incorrect number of bytes. (Previously, we would ignore the
4617 - Fix as-yet-unused reverse IPv6 lookup code so it sends nybbles
4618 in the correct order, and doesn't crash.
4619 - Free memory held in recently-completed DNS lookup attempts on exit.
4620 This was not a memory leak, but may have been hiding memory leaks.
4621 - Handle TTL values correctly on reverse DNS lookups.
4622 - Treat failure to parse resolv.conf as an error.
4624 o Minor bugfixes (other):
4625 - Fix crash with "tor --list-fingerprint" (reported by seeess).
4626 - When computing clock skew from directory HTTP headers, consider what
4627 time it was when we finished asking for the directory, not what
4629 - Expire socks connections if they spend too long waiting for the
4630 handshake to finish. Previously we would let them sit around for
4631 days, if the connecting application didn't close them either.
4632 - And if the socks handshake hasn't started, don't send a
4633 "DNS resolve socks failed" handshake reply; just close it.
4634 - Stop using C functions that OpenBSD's linker doesn't like.
4635 - Don't launch requests for descriptors unless we have networkstatuses
4636 from at least half of the authorities. This delays the first
4637 download slightly under pathological circumstances, but can prevent
4638 us from downloading a bunch of descriptors we don't need.
4639 - Do not log IPs with TLS failures for incoming TLS
4640 connections. (Fixes bug 382.)
4641 - If the user asks to use invalid exit nodes, be willing to use
4643 - Stop using the reserved ac_cv namespace in our configure script.
4644 - Call stat() slightly less often; use fstat() when possible.
4645 - Refactor the way we handle pending circuits when an OR connection
4646 completes or fails, in an attempt to fix a rare crash bug.
4647 - Only rewrite a conn's address based on X-Forwarded-For: headers
4648 if it's a parseable public IP address; and stop adding extra quotes
4649 to the resulting address.
4652 - Weight directory requests by advertised bandwidth. Now we can
4653 let servers enable write limiting but still allow most clients to
4654 succeed at their directory requests. (We still ignore weights when
4655 choosing a directory authority; I hope this is a feature.)
4658 - Create a new file ReleaseNotes which was the old ChangeLog. The
4659 new ChangeLog file now includes the summaries for all development
4661 - Check for addresses with invalid characters at the exit as well
4662 as at the client, and warn less verbosely when they fail. You can
4663 override this by setting ServerDNSAllowNonRFC953Addresses to 1.
4664 - Adapt a patch from goodell to let the contrib/exitlist script
4665 take arguments rather than require direct editing.
4666 - Inform the server operator when we decide not to advertise a
4667 DirPort due to AccountingMax enabled or a low BandwidthRate. It
4668 was confusing Zax, so now we're hopefully more helpful.
4669 - Bring us one step closer to being able to establish an encrypted
4670 directory tunnel without knowing a descriptor first. Still not
4671 ready yet. As part of the change, now assume we can use a
4672 create_fast cell if we don't know anything about a router.
4673 - Allow exit nodes to use nameservers running on ports other than 53.
4674 - Servers now cache reverse DNS replies.
4675 - Add an --ignore-missing-torrc command-line option so that we can
4676 get the "use sensible defaults if the configuration file doesn't
4677 exist" behavior even when specifying a torrc location on the command
4680 o Minor features (controller):
4681 - Track reasons for OR connection failure; make these reasons
4682 available via the controller interface. (Patch from Mike Perry.)
4683 - Add a SOCKS_BAD_HOSTNAME client status event so controllers
4684 can learn when clients are sending malformed hostnames to Tor.
4685 - Clean up documentation for controller status events.
4686 - Add a REMAP status to stream events to note that a stream's
4687 address has changed because of a cached address or a MapAddress
4691 Changes in version 0.1.2.6-alpha - 2007-01-09
4693 - Fix an assert error introduced in 0.1.2.5-alpha: if a single TLS
4694 connection handles more than 4 gigs in either direction, we crash.
4695 - Fix an assert error introduced in 0.1.2.5-alpha: if we're an
4696 advertised exit node, somebody might try to exit from us when
4697 we're bootstrapping and before we've built our descriptor yet.
4698 Refuse the connection rather than crashing.
4701 - Warn if we (as a server) find that we've resolved an address that we
4702 weren't planning to resolve.
4703 - Warn that using select() on any libevent version before 1.1 will be
4704 unnecessarily slow (even for select()).
4705 - Flush ERR-level controller status events just like we currently
4706 flush ERR-level log events, so that a Tor shutdown doesn't prevent
4707 the controller from learning about current events.
4709 o Minor features (more controller status events):
4710 - Implement EXTERNAL_ADDRESS server status event so controllers can
4711 learn when our address changes.
4712 - Implement BAD_SERVER_DESCRIPTOR server status event so controllers
4713 can learn when directories reject our descriptor.
4714 - Implement SOCKS_UNKNOWN_PROTOCOL client status event so controllers
4715 can learn when a client application is speaking a non-socks protocol
4717 - Implement DANGEROUS_SOCKS client status event so controllers
4718 can learn when a client application is leaking DNS addresses.
4719 - Implement BUG general status event so controllers can learn when
4720 Tor is unhappy about its internal invariants.
4721 - Implement CLOCK_SKEW general status event so controllers can learn
4722 when Tor thinks the system clock is set incorrectly.
4723 - Implement GOOD_SERVER_DESCRIPTOR and ACCEPTED_SERVER_DESCRIPTOR
4724 server status events so controllers can learn when their descriptors
4725 are accepted by a directory.
4726 - Implement CHECKING_REACHABILITY and REACHABILITY_{SUCCEEDED|FAILED}
4727 server status events so controllers can learn about Tor's progress in
4728 deciding whether it's reachable from the outside.
4729 - Implement BAD_LIBEVENT general status event so controllers can learn
4730 when we have a version/method combination in libevent that needs to
4732 - Implement NAMESERVER_STATUS, NAMESERVER_ALL_DOWN, DNS_HIJACKED,
4733 and DNS_USELESS server status events so controllers can learn
4734 about changes to DNS server status.
4736 o Minor features (directory):
4737 - Authorities no longer recommend exits as guards if this would shift
4738 too much load to the exit nodes.
4741 Changes in version 0.1.2.5-alpha - 2007-01-06
4743 - Enable write limiting as well as read limiting. Now we sacrifice
4744 capacity if we're pushing out lots of directory traffic, rather
4745 than overrunning the user's intended bandwidth limits.
4746 - Include TLS overhead when counting bandwidth usage; previously, we
4747 would count only the bytes sent over TLS, but not the bytes used
4749 - Support running the Tor service with a torrc not in the same
4750 directory as tor.exe and default to using the torrc located in
4751 the %appdata%\Tor\ of the user who installed the service. Patch
4753 - Servers now check for the case when common DNS requests are going to
4754 wildcarded addresses (i.e. all getting the same answer), and change
4755 their exit policy to reject *:* if it's happening.
4756 - Implement BEGIN_DIR cells, so we can connect to the directory
4757 server via TLS to do encrypted directory requests rather than
4758 plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
4759 config options if you like.
4761 o Minor features (config and docs):
4762 - Start using the state file to store bandwidth accounting data:
4763 the bw_accounting file is now obsolete. We'll keep generating it
4764 for a while for people who are still using 0.1.2.4-alpha.
4765 - Try to batch changes to the state file so that we do as few
4766 disk writes as possible while still storing important things in
4768 - The state file and the bw_accounting file get saved less often when
4769 the AvoidDiskWrites config option is set.
4770 - Make PIDFile work on Windows (untested).
4771 - Add internal descriptions for a bunch of configuration options:
4772 accessible via controller interface and in comments in saved
4774 - Reject *:563 (NNTPS) in the default exit policy. We already reject
4775 NNTP by default, so this seems like a sensible addition.
4776 - Clients now reject hostnames with invalid characters. This should
4777 avoid some inadvertent info leaks. Add an option
4778 AllowNonRFC953Hostnames to disable this behavior, in case somebody
4779 is running a private network with hosts called @, !, and #.
4780 - Add a maintainer script to tell us which options are missing
4781 documentation: "make check-docs".
4782 - Add a new address-spec.txt document to describe our special-case
4783 addresses: .exit, .onion, and .noconnnect.
4785 o Minor features (DNS):
4786 - Ongoing work on eventdns infrastructure: now it has dns server
4787 and ipv6 support. One day Tor will make use of it.
4788 - Add client-side caching for reverse DNS lookups.
4789 - Add support to tor-resolve tool for reverse lookups and SOCKS5.
4790 - When we change nameservers or IP addresses, reset and re-launch
4791 our tests for DNS hijacking.
4793 o Minor features (directory):
4794 - Authorities now specify server versions in networkstatus. This adds
4795 about 2% to the size of compressed networkstatus docs, and allows
4796 clients to tell which servers support BEGIN_DIR and which don't.
4797 The implementation is forward-compatible with a proposed future
4798 protocol version scheme not tied to Tor versions.
4799 - DirServer configuration lines now have an orport= option so
4800 clients can open encrypted tunnels to the authorities without
4801 having downloaded their descriptors yet. Enabled for moria1,
4802 moria2, tor26, and lefkada now in the default configuration.
4803 - Directory servers are more willing to send a 503 "busy" if they
4804 are near their write limit, especially for v1 directory requests.
4805 Now they can use their limited bandwidth for actual Tor traffic.
4806 - Clients track responses with status 503 from dirservers. After a
4807 dirserver has given us a 503, we try not to use it until an hour has
4808 gone by, or until we have no dirservers that haven't given us a 503.
4809 - When we get a 503 from a directory, and we're not a server, we don't
4810 count the failure against the total number of failures allowed
4811 for the thing we're trying to download.
4812 - Report X-Your-Address-Is correctly from tunneled directory
4813 connections; don't report X-Your-Address-Is when it's an internal
4814 address; and never believe reported remote addresses when they're
4816 - Protect against an unlikely DoS attack on directory servers.
4817 - Add a BadDirectory flag to network status docs so that authorities
4818 can (eventually) tell clients about caches they believe to be
4821 o Minor features (controller):
4822 - Have GETINFO dir/status/* work on hosts with DirPort disabled.
4823 - Reimplement GETINFO so that info/names stays in sync with the
4825 - Implement "GETINFO fingerprint".
4826 - Implement "SETEVENTS GUARD" so controllers can get updates on
4827 entry guard status as it changes.
4829 o Minor features (clean up obsolete pieces):
4830 - Remove some options that have been deprecated since at least
4831 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
4832 SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
4834 - We no longer look for identity and onion keys in "identity.key" and
4835 "onion.key" -- these were replaced by secret_id_key and
4836 secret_onion_key in 0.0.8pre1.
4837 - We no longer require unrecognized directory entries to be
4840 o Major bugfixes (security):
4841 - Stop sending the HttpProxyAuthenticator string to directory
4842 servers when directory connections are tunnelled through Tor.
4843 - Clients no longer store bandwidth history in the state file.
4844 - Do not log introduction points for hidden services if SafeLogging
4846 - When generating bandwidth history, round down to the nearest
4847 1k. When storing accounting data, round up to the nearest 1k.
4848 - When we're running as a server, remember when we last rotated onion
4849 keys, so that we will rotate keys once they're a week old even if
4850 we never stay up for a week ourselves.
4852 o Major bugfixes (other):
4853 - Fix a longstanding bug in eventdns that prevented the count of
4854 timed-out resolves from ever being reset. This bug caused us to
4855 give up on a nameserver the third time it timed out, and try it
4856 10 seconds later... and to give up on it every time it timed out
4858 - Take out the '5 second' timeout from the connection retry
4859 schedule. Now the first connect attempt will wait a full 10
4860 seconds before switching to a new circuit. Perhaps this will help
4861 a lot. Based on observations from Mike Perry.
4862 - Fix a bug on the Windows implementation of tor_mmap_file() that
4863 would prevent the cached-routers file from ever loading. Reported
4867 - Fix an assert failure when a directory authority sets
4868 AuthDirRejectUnlisted and then receives a descriptor from an
4869 unlisted router. Reported by seeess.
4870 - Avoid a double-free when parsing malformed DirServer lines.
4871 - Fix a bug when a BSD-style PF socket is first used. Patch from
4873 - Fix a bug in 0.1.2.2-alpha that prevented clients from asking
4874 to resolve an address at a given exit node even when they ask for
4876 - Servers no longer ever list themselves in their "family" line,
4877 even if configured to do so. This makes it easier to configure
4878 family lists conveniently.
4879 - When running as a server, don't fall back to 127.0.0.1 when no
4880 nameservers are configured in /etc/resolv.conf; instead, make the
4881 user fix resolv.conf or specify nameservers explicitly. (Resolves
4883 - Stop accepting certain malformed ports in configured exit policies.
4884 - Don't re-write the fingerprint file every restart, unless it has
4886 - Stop warning when a single nameserver fails: only warn when _all_ of
4887 our nameservers have failed. Also, when we only have one nameserver,
4888 raise the threshold for deciding that the nameserver is dead.
4889 - Directory authorities now only decide that routers are reachable
4890 if their identity keys are as expected.
4891 - When the user uses bad syntax in the Log config line, stop
4892 suggesting other bad syntax as a replacement.
4893 - Correctly detect ipv6 DNS capability on OpenBSD.
4895 o Minor bugfixes (controller):
4896 - Report the circuit number correctly in STREAM CLOSED events. Bug
4897 reported by Mike Perry.
4898 - Do not report bizarre values for results of accounting GETINFOs
4899 when the last second's write or read exceeds the allotted bandwidth.
4900 - Report "unrecognized key" rather than an empty string when the
4901 controller tries to fetch a networkstatus that doesn't exist.
4904 Changes in version 0.1.1.26 - 2006-12-14
4905 o Security bugfixes:
4906 - Stop sending the HttpProxyAuthenticator string to directory
4907 servers when directory connections are tunnelled through Tor.
4908 - Clients no longer store bandwidth history in the state file.
4909 - Do not log introduction points for hidden services if SafeLogging
4913 - Fix an assert failure when a directory authority sets
4914 AuthDirRejectUnlisted and then receives a descriptor from an
4915 unlisted router (reported by seeess).
4918 Changes in version 0.1.2.4-alpha - 2006-12-03
4920 - Add support for using natd; this allows FreeBSDs earlier than
4921 5.1.2 to have ipfw send connections through Tor without using
4922 SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
4925 - Make all connections to addresses of the form ".noconnect"
4926 immediately get closed. This lets application/controller combos
4927 successfully test whether they're talking to the same Tor by
4928 watching for STREAM events.
4929 - Make cross.sh cross-compilation script work even when autogen.sh
4930 hasn't been run. (Patch from Michael Mohr.)
4931 - Statistics dumped by -USR2 now include a breakdown of public key
4932 operations, for profiling.
4935 - Fix a major leak when directory authorities parse their
4936 approved-routers list, a minor memory leak when we fail to pick
4937 an exit node, and a few rare leaks on errors.
4938 - Handle TransPort connections even when the server sends data before
4939 the client sends data. Previously, the connection would just hang
4940 until the client sent data. (Patch from tup based on patch from
4942 - Avoid assert failure when our cached-routers file is empty on
4946 - Don't log spurious warnings when we see a circuit close reason we
4947 don't recognize; it's probably just from a newer version of Tor.
4948 - Have directory authorities allow larger amounts of drift in uptime
4949 without replacing the server descriptor: previously, a server that
4950 restarted every 30 minutes could have 48 "interesting" descriptors
4952 - Start linking to the Tor specification and Tor reference manual
4953 correctly in the Windows installer.
4954 - Add Vidalia to the OS X uninstaller script, so when we uninstall
4955 Tor/Privoxy we also uninstall Vidalia.
4956 - Resume building on Irix64, and fix a lot of warnings from its
4958 - Don't corrupt last_guessed_ip in router_new_address_suggestion()
4959 when we're running as a client.
4962 Changes in version 0.1.1.25 - 2006-11-04
4964 - When a client asks us to resolve (rather than connect to)
4965 an address, and we have a cached answer, give them the cached
4966 answer. Previously, we would give them no answer at all.
4967 - We were building exactly the wrong circuits when we predict
4968 hidden service requirements, meaning Tor would have to build all
4969 its circuits on demand.
4970 - If none of our live entry guards have a high uptime, but we
4971 require a guard with a high uptime, try adding a new guard before
4972 we give up on the requirement. This patch should make long-lived
4973 connections more stable on average.
4974 - When testing reachability of our DirPort, don't launch new
4975 tests when there's already one in progress -- unreachable
4976 servers were stacking up dozens of testing streams.
4978 o Security bugfixes:
4979 - When the user sends a NEWNYM signal, clear the client-side DNS
4980 cache too. Otherwise we continue to act on previous information.
4983 - Avoid a memory corruption bug when creating a hash table for
4985 - Avoid possibility of controller-triggered crash when misusing
4986 certain commands from a v0 controller on platforms that do not
4987 handle printf("%s",NULL) gracefully.
4988 - Avoid infinite loop on unexpected controller input.
4989 - Don't log spurious warnings when we see a circuit close reason we
4990 don't recognize; it's probably just from a newer version of Tor.
4991 - Add Vidalia to the OS X uninstaller script, so when we uninstall
4992 Tor/Privoxy we also uninstall Vidalia.
4995 Changes in version 0.1.2.3-alpha - 2006-10-29
4997 - Prepare for servers to publish descriptors less often: never
4998 discard a descriptor simply for being too old until either it is
4999 recommended by no authorities, or until we get a better one for
5000 the same router. Make caches consider retaining old recommended
5001 routers for even longer.
5002 - If most authorities set a BadExit flag for a server, clients
5003 don't think of it as a general-purpose exit. Clients only consider
5004 authorities that advertise themselves as listing bad exits.
5005 - Directory servers now provide 'Pragma: no-cache' and 'Expires'
5006 headers for content, so that we can work better in the presence of
5007 caching HTTP proxies.
5008 - Allow authorities to list nodes as bad exits by fingerprint or by
5011 o Minor features, controller:
5012 - Add a REASON field to CIRC events; for backward compatibility, this
5013 field is sent only to controllers that have enabled the extended
5014 event format. Also, add additional reason codes to explain why
5015 a given circuit has been destroyed or truncated. (Patches from
5017 - Add a REMOTE_REASON field to extended CIRC events to tell the
5018 controller about why a remote OR told us to close a circuit.
5019 - Stream events also now have REASON and REMOTE_REASON fields,
5020 working much like those for circuit events.
5021 - There's now a GETINFO ns/... field so that controllers can ask Tor
5022 about the current status of a router.
5023 - A new event type "NS" to inform a controller when our opinion of
5024 a router's status has changed.
5025 - Add a GETINFO events/names and GETINFO features/names so controllers
5026 can tell which events and features are supported.
5027 - A new CLEARDNSCACHE signal to allow controllers to clear the
5028 client-side DNS cache without expiring circuits.
5030 o Security bugfixes:
5031 - When the user sends a NEWNYM signal, clear the client-side DNS
5032 cache too. Otherwise we continue to act on previous information.
5035 - Avoid sending junk to controllers or segfaulting when a controller
5036 uses EVENT_NEW_DESC with verbose nicknames.
5037 - Stop triggering asserts if the controller tries to extend hidden
5038 service circuits (reported by mwenge).
5039 - Avoid infinite loop on unexpected controller input.
5040 - When the controller does a "GETINFO network-status", tell it
5041 about even those routers whose descriptors are very old, and use
5042 long nicknames where appropriate.
5043 - Change NT service functions to be loaded on demand. This lets us
5044 build with MinGW without breaking Tor for Windows 98 users.
5045 - Do DirPort reachability tests less often, since a single test
5046 chews through many circuits before giving up.
5047 - In the hidden service example in torrc.sample, stop recommending
5048 esoteric and discouraged hidden service options.
5049 - When stopping an NT service, wait up to 10 sec for it to actually
5050 stop. (Patch from Matt Edman; resolves bug 295.)
5051 - Fix handling of verbose nicknames with ORCONN controller events:
5052 make them show up exactly when requested, rather than exactly when
5054 - When reporting verbose nicknames in entry_guards_getinfo(), avoid
5055 printing a duplicate "$" in the keys we send (reported by mwenge).
5056 - Correctly set maximum connection limit on Cygwin. (This time
5058 - Try to detect Windows correctly when cross-compiling.
5059 - Detect the size of the routers file correctly even if it is
5060 corrupted (on systems without mmap) or not page-aligned (on systems
5061 with mmap). This bug was harmless.
5062 - Sometimes we didn't bother sending a RELAY_END cell when an attempt
5063 to open a stream fails; now we do in more cases. This should
5064 make clients able to find a good exit faster in some cases, since
5065 unhandleable requests will now get an error rather than timing out.
5066 - Resolve two memory leaks when rebuilding the on-disk router cache
5067 (reported by fookoowa).
5068 - Clean up minor code warnings suggested by the MIPSpro C compiler,
5069 and reported by some Centos users.
5070 - Controller signals now work on non-Unix platforms that don't define
5071 SIGUSR1 and SIGUSR2 the way we expect.
5072 - Patch from Michael Mohr to contrib/cross.sh, so it checks more
5073 values before failing, and always enables eventdns.
5074 - Libevent-1.2 exports, but does not define in its headers, strlcpy.
5075 Try to fix this in configure.in by checking for most functions
5076 before we check for libevent.
5079 Changes in version 0.1.2.2-alpha - 2006-10-07
5081 - Make our async eventdns library on-by-default for Tor servers,
5082 and plan to deprecate the separate dnsworker threads.
5083 - Add server-side support for "reverse" DNS lookups (using PTR
5084 records so clients can determine the canonical hostname for a given
5085 IPv4 address). Only supported by servers using eventdns; servers
5086 now announce in their descriptors whether they support eventdns.
5087 - Specify and implement client-side SOCKS5 interface for reverse DNS
5088 lookups (see doc/socks-extensions.txt).
5089 - Add a BEGIN_DIR relay cell type for an easier in-protocol way to
5090 connect to directory servers through Tor. Previously, clients needed
5091 to find Tor exits to make private connections to directory servers.
5092 - Avoid choosing Exit nodes for entry or middle hops when the
5093 total bandwidth available from non-Exit nodes is much higher than
5094 the total bandwidth available from Exit nodes.
5095 - Workaround for name servers (like Earthlink's) that hijack failing
5096 DNS requests and replace the no-such-server answer with a "helpful"
5097 redirect to an advertising-driven search portal. Also work around
5098 DNS hijackers who "helpfully" decline to hijack known-invalid
5099 RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
5100 lets you turn it off.
5101 - Send out a burst of long-range padding cells once we've established
5102 that we're reachable. Spread them over 4 circuits, so hopefully
5103 a few will be fast. This exercises our bandwidth and bootstraps
5104 us into the directory more quickly.
5106 o New/improved config options:
5107 - Add new config option "ResolvConf" to let the server operator
5108 choose an alternate resolve.conf file when using eventdns.
5109 - Add an "EnforceDistinctSubnets" option to control our "exclude
5110 servers on the same /16" behavior. It's still on by default; this
5111 is mostly for people who want to operate private test networks with
5112 all the machines on the same subnet.
5113 - If one of our entry guards is on the ExcludeNodes list, or the
5114 directory authorities don't think it's a good guard, treat it as
5115 if it were unlisted: stop using it as a guard, and throw it off
5116 the guards list if it stays that way for a long time.
5117 - Allow directory authorities to be marked separately as authorities
5118 for the v1 directory protocol, the v2 directory protocol, and
5119 as hidden service directories, to make it easier to retire old
5120 authorities. V1 authorities should set "HSAuthoritativeDir 1"
5121 to continue being hidden service authorities too.
5122 - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
5124 o Minor features, controller:
5125 - Fix CIRC controller events so that controllers can learn the
5126 identity digests of non-Named servers used in circuit paths.
5127 - Let controllers ask for more useful identifiers for servers. Instead
5128 of learning identity digests for un-Named servers and nicknames
5129 for Named servers, the new identifiers include digest, nickname,
5130 and indication of Named status. Off by default; see control-spec.txt
5131 for more information.
5132 - Add a "getinfo address" controller command so it can display Tor's
5133 best guess to the user.
5134 - New controller event to alert the controller when our server
5135 descriptor has changed.
5136 - Give more meaningful errors on controller authentication failure.
5138 o Minor features, other:
5139 - When asked to resolve a hostname, don't use non-exit servers unless
5140 requested to do so. This allows servers with broken DNS to be
5141 useful to the network.
5142 - Divide eventdns log messages into warn and info messages.
5143 - Reserve the nickname "Unnamed" for routers that can't pick
5144 a hostname: any router can call itself Unnamed; directory
5145 authorities will never allocate Unnamed to any particular router;
5146 clients won't believe that any router is the canonical Unnamed.
5147 - Only include function names in log messages for info/debug messages.
5148 For notice/warn/err, the content of the message should be clear on
5149 its own, and printing the function name only confuses users.
5150 - Avoid some false positives during reachability testing: don't try
5151 to test via a server that's on the same /24 as us.
5152 - If we fail to build a circuit to an intended enclave, and it's
5153 not mandatory that we use that enclave, stop wanting it.
5154 - When eventdns is enabled, allow multithreaded builds on NetBSD and
5155 OpenBSD. (We had previously disabled threads on these platforms
5156 because they didn't have working thread-safe resolver functions.)
5158 o Major bugfixes, anonymity/security:
5159 - If a client asked for a server by name, and there's a named server
5160 in our network-status but we don't have its descriptor yet, we
5161 could return an unnamed server instead.
5162 - Fix NetBSD bug that could allow someone to force uninitialized RAM
5163 to be sent to a server's DNS resolver. This only affects NetBSD
5164 and other platforms that do not bounds-check tolower().
5165 - Reject (most) attempts to use Tor circuits with length one. (If
5166 many people start using Tor as a one-hop proxy, exit nodes become
5167 a more attractive target for compromise.)
5168 - Just because your DirPort is open doesn't mean people should be
5169 able to remotely teach you about hidden service descriptors. Now
5170 only accept rendezvous posts if you've got HSAuthoritativeDir set.
5172 o Major bugfixes, other:
5173 - Don't crash on race condition in dns.c: tor_assert(!resolve->expire)
5174 - When a client asks the server to resolve (not connect to)
5175 an address, and it has a cached answer, give them the cached answer.
5176 Previously, the server would give them no answer at all.
5177 - Allow really slow clients to not hang up five minutes into their
5178 directory downloads (suggested by Adam J. Richter).
5179 - We were building exactly the wrong circuits when we anticipated
5180 hidden service requirements, meaning Tor would have to build all
5181 its circuits on demand.
5182 - Avoid crashing when we mmap a router cache file of size 0.
5183 - When testing reachability of our DirPort, don't launch new
5184 tests when there's already one in progress -- unreachable
5185 servers were stacking up dozens of testing streams.
5187 o Minor bugfixes, correctness:
5188 - If we're a directory mirror and we ask for "all" network status
5189 documents, we would discard status documents from authorities
5191 - Avoid a memory corruption bug when creating a hash table for
5193 - Avoid controller-triggered crash when misusing certain commands
5194 from a v0 controller on platforms that do not handle
5195 printf("%s",NULL) gracefully.
5196 - Don't crash when a controller sends a third argument to an
5197 "extendcircuit" request.
5198 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
5199 response; fix error code when "getinfo dir/status/" fails.
5200 - Avoid crash when telling controller stream-status and a stream
5202 - Patch from Adam Langley to fix assert() in eventdns.c.
5203 - Fix a debug log message in eventdns to say "X resolved to Y"
5204 instead of "X resolved to X".
5205 - Make eventdns give strings for DNS errors, not just error numbers.
5206 - Track unreachable entry guards correctly: don't conflate
5207 'unreachable by us right now' with 'listed as down by the directory
5208 authorities'. With the old code, if a guard was unreachable by
5209 us but listed as running, it would clog our guard list forever.
5210 - Behave correctly in case we ever have a network with more than
5211 2GB/s total advertised capacity.
5212 - Make TrackExitHosts case-insensitive, and fix the behavior of
5213 ".suffix" TrackExitHosts items to avoid matching in the middle of
5215 - Finally fix the openssl warnings from newer gccs that believe that
5216 ignoring a return value is okay, but casting a return value and
5217 then ignoring it is a sign of madness.
5218 - Prevent the contrib/exitlist script from printing the same
5219 result more than once.
5220 - Patch from Steve Hildrey: Generate network status correctly on
5221 non-versioning dirservers.
5222 - Don't listen to the X-Your-Address-Is hint if you did the lookup
5223 via Tor; otherwise you'll think you're the exit node's IP address.
5225 o Minor bugfixes, performance:
5226 - Two small performance improvements on parsing descriptors.
5227 - Major performance improvement on inserting descriptors: change
5228 algorithm from O(n^2) to O(n).
5229 - Make the common memory allocation path faster on machines where
5230 malloc(0) returns a pointer.
5231 - Start remembering X-Your-Address-Is directory hints even if you're
5232 a client, so you can become a server more smoothly.
5233 - Avoid duplicate entries on MyFamily line in server descriptor.
5235 o Packaging, features:
5236 - Remove architecture from OS X builds. The official builds are
5237 now universal binaries.
5238 - The Debian package now uses --verify-config when (re)starting,
5239 to distinguish configuration errors from other errors.
5240 - Update RPMs to require libevent 1.1b.
5242 o Packaging, bugfixes:
5243 - Patches so Tor builds with MinGW on Windows.
5244 - Patches so Tor might run on Cygwin again.
5245 - Resume building on non-gcc compilers and ancient gcc. Resume
5246 building with the -O0 compile flag. Resume building cleanly on
5248 - Run correctly on OS X platforms with case-sensitive filesystems.
5249 - Correct includes for net/if.h and net/pfvar.h on OpenBSD (from Tup).
5250 - Add autoconf checks so Tor can build on Solaris x86 again.
5253 - Documented (and renamed) ServerDNSSearchDomains and
5254 ServerDNSResolvConfFile options.
5255 - Be clearer that the *ListenAddress directives can be repeated
5259 Changes in version 0.1.1.24 - 2006-09-29
5261 - Allow really slow clients to not hang up five minutes into their
5262 directory downloads (suggested by Adam J. Richter).
5263 - Fix major performance regression from 0.1.0.x: instead of checking
5264 whether we have enough directory information every time we want to
5265 do something, only check when the directory information has changed.
5266 This should improve client CPU usage by 25-50%.
5267 - Don't crash if, after a server has been running for a while,
5268 it can't resolve its hostname.
5271 - Allow Tor to start when RunAsDaemon is set but no logs are set.
5272 - Don't crash when the controller receives a third argument to an
5273 "extendcircuit" request.
5274 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
5275 response; fix error code when "getinfo dir/status/" fails.
5276 - Fix configure.in to not produce broken configure files with
5277 more recent versions of autoconf. Thanks to Clint for his auto*
5279 - Fix security bug on NetBSD that could allow someone to force
5280 uninitialized RAM to be sent to a server's DNS resolver. This
5281 only affects NetBSD and other platforms that do not bounds-check
5283 - Warn user when using libevent 1.1a or earlier with win32 or kqueue
5284 methods: these are known to be buggy.
5285 - If we're a directory mirror and we ask for "all" network status
5286 documents, we would discard status documents from authorities
5290 Changes in version 0.1.2.1-alpha - 2006-08-27
5292 - Add "eventdns" async dns library from Adam Langley, tweaked to
5293 build on OSX and Windows. Only enabled if you pass the
5294 --enable-eventdns argument to configure.
5295 - Allow servers with no hostname or IP address to learn their
5296 IP address by asking the directory authorities. This code only
5297 kicks in when you would normally have exited with a "no address"
5298 error. Nothing's authenticated, so use with care.
5299 - Rather than waiting a fixed amount of time between retrying
5300 application connections, we wait only 5 seconds for the first,
5301 10 seconds for the second, and 15 seconds for each retry after
5302 that. Hopefully this will improve the expected user experience.
5303 - Patch from Tup to add support for transparent AP connections:
5304 this basically bundles the functionality of trans-proxy-tor
5305 into the Tor mainline. Now hosts with compliant pf/netfilter
5306 implementations can redirect TCP connections straight to Tor
5307 without diverting through SOCKS. Needs docs.
5308 - Busy directory servers save lots of memory by spooling server
5309 descriptors, v1 directories, and v2 networkstatus docs to buffers
5310 as needed rather than en masse. Also mmap the cached-routers
5311 files, so we don't need to keep the whole thing in memory too.
5312 - Automatically avoid picking more than one node from the same
5313 /16 network when constructing a circuit.
5314 - Revise and clean up the torrc.sample that we ship with; add
5315 a section for BandwidthRate and BandwidthBurst.
5318 - Split circuit_t into origin_circuit_t and or_circuit_t, and
5319 split connection_t into edge, or, dir, control, and base structs.
5320 These will save quite a bit of memory on busy servers, and they'll
5321 also help us track down bugs in the code and bugs in the spec.
5322 - Experimentally re-enable kqueue on OSX when using libevent 1.1b
5323 or later. Log when we are doing this, so we can diagnose it when
5324 it fails. (Also, recommend libevent 1.1b for kqueue and
5325 win32 methods; deprecate libevent 1.0b harder; make libevent
5326 recommendation system saner.)
5327 - Start being able to build universal binaries on OS X (thanks
5329 - Export the default exit policy via the control port, so controllers
5330 don't need to guess what it is / will be later.
5331 - Add a man page entry for ProtocolWarnings.
5332 - Add TestVia config option to the man page.
5333 - Remove even more protocol-related warnings from Tor server logs,
5334 such as bad TLS handshakes and malformed begin cells.
5335 - Stop fetching descriptors if you're not a dir mirror and you
5336 haven't tried to establish any circuits lately. [This currently
5337 causes some dangerous behavior, because when you start up again
5338 you'll use your ancient server descriptors.]
5339 - New DirPort behavior: if you have your dirport set, you download
5340 descriptors aggressively like a directory mirror, whether or not
5342 - Get rid of the router_retry_connections notion. Now routers
5343 no longer try to rebuild long-term connections to directory
5344 authorities, and directory authorities no longer try to rebuild
5345 long-term connections to all servers. We still don't hang up
5346 connections in these two cases though -- we need to look at it
5347 more carefully to avoid flapping, and we likely need to wait til
5348 0.1.1.x is obsolete.
5349 - Drop compatibility with obsolete Tors that permit create cells
5350 to have the wrong circ_id_type.
5351 - Re-enable per-connection rate limiting. Get rid of the "OP
5352 bandwidth" concept. Lay groundwork for "bandwidth classes" --
5353 separate global buckets that apply depending on what sort of conn
5355 - Start publishing one minute or so after we find our ORPort
5356 to be reachable. This will help reduce the number of descriptors
5357 we have for ourselves floating around, since it's quite likely
5358 other things (e.g. DirPort) will change during that minute too.
5359 - Fork the v1 directory protocol into its own spec document,
5360 and mark dir-spec.txt as the currently correct (v2) spec.
5363 - When we find our DirPort to be reachable, publish a new descriptor
5364 so we'll tell the world (reported by pnx).
5365 - Publish a new descriptor after we hup/reload. This is important
5366 if our config has changed such that we'll want to start advertising
5367 our DirPort now, etc.
5368 - Allow Tor to start when RunAsDaemon is set but no logs are set.
5369 - When we have a state file we cannot parse, tell the user and
5370 move it aside. Now we avoid situations where the user starts
5371 Tor in 1904, Tor writes a state file with that timestamp in it,
5372 the user fixes her clock, and Tor refuses to start.
5373 - Fix configure.in to not produce broken configure files with
5374 more recent versions of autoconf. Thanks to Clint for his auto*
5376 - "tor --verify-config" now exits with -1(255) or 0 depending on
5377 whether the config options are bad or good.
5378 - Resolve bug 321 when using dnsworkers: append a period to every
5379 address we resolve at the exit node, so that we do not accidentally
5380 pick up local addresses, and so that failing searches are retried
5381 in the resolver search domains. (This is already solved for
5382 eventdns.) (This breaks Blossom servers for now.)
5383 - If we are using an exit enclave and we can't connect, e.g. because
5384 its webserver is misconfigured to not listen on localhost, then
5385 back off and try connecting from somewhere else before we fail.
5388 - Start compiling on MinGW on Windows (patches from Mike Chiussi).
5389 - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
5390 - Fix bug 314: Tor clients issued "unsafe socks" warnings even
5391 when the IP address is mapped through MapAddress to a hostname.
5392 - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
5393 useless IPv6 DNS resolves.
5394 - Patch suggested by Karsten Loesing: respond to SIGNAL command
5395 before we execute the signal, in case the signal shuts us down.
5396 - Clean up AllowInvalidNodes man page entry.
5397 - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
5398 - Add more asserts to track down an assert error on a windows Tor
5399 server with connection_add being called with socket == -1.
5400 - Handle reporting OR_CONN_EVENT_NEW events to the controller.
5401 - Fix misleading log messages: an entry guard that is "unlisted",
5402 as well as not known to be "down" (because we've never heard
5403 of it), is not therefore "up".
5404 - Remove code to special-case "-cvs" ending, since it has not
5405 actually mattered since 0.0.9.
5406 - Make our socks5 handling more robust to broken socks clients:
5407 throw out everything waiting on the buffer in between socks
5408 handshake phases, since they can't possibly (so the theory
5409 goes) have predicted what we plan to respond to them.
5412 Changes in version 0.1.1.23 - 2006-07-30
5414 - Fast Tor servers, especially exit nodes, were triggering asserts
5415 due to a bug in handling the list of pending DNS resolves. Some
5416 bugs still remain here; we're hunting them.
5417 - Entry guards could crash clients by sending unexpected input.
5418 - More fixes on reachability testing: if you find yourself reachable,
5419 then don't ever make any client requests (so you stop predicting
5420 circuits), then hup or have your clock jump, then later your IP
5421 changes, you won't think circuits are working, so you won't try to
5422 test reachability, so you won't publish.
5425 - Avoid a crash if the controller does a resetconf firewallports
5426 and then a setconf fascistfirewall=1.
5427 - Avoid an integer underflow when the dir authority decides whether
5428 a router is stable: we might wrongly label it stable, and compute
5429 a slightly wrong median stability, when a descriptor is published
5431 - Fix a place where we might trigger an assert if we can't build our
5432 own server descriptor yet.
5435 Changes in version 0.1.1.22 - 2006-07-05
5437 - Fix a big bug that was causing servers to not find themselves
5438 reachable if they changed IP addresses. Since only 0.1.1.22+
5439 servers can do reachability testing correctly, now we automatically
5440 make sure to test via one of these.
5441 - Fix to allow clients and mirrors to learn directory info from
5442 descriptor downloads that get cut off partway through.
5443 - Directory authorities had a bug in deciding if a newly published
5444 descriptor was novel enough to make everybody want a copy -- a few
5445 servers seem to be publishing new descriptors many times a minute.
5447 - Fix a rare bug that was causing some servers to complain about
5448 "closing wedged cpuworkers" and skip some circuit create requests.
5449 - Make the Exit flag in directory status documents actually work.
5452 Changes in version 0.1.1.21 - 2006-06-10
5453 o Crash and assert fixes from 0.1.1.20:
5454 - Fix a rare crash on Tor servers that have enabled hibernation.
5455 - Fix a seg fault on startup for Tor networks that use only one
5456 directory authority.
5457 - Fix an assert from a race condition that occurs on Tor servers
5458 while exiting, where various threads are trying to log that they're
5459 exiting, and delete the logs, at the same time.
5460 - Make our unit tests pass again on certain obscure platforms.
5463 - Add support for building SUSE RPM packages.
5464 - Speed up initial bootstrapping for clients: if we are making our
5465 first ever connection to any entry guard, then don't mark it down
5467 - When only one Tor server in the network is labelled as a guard,
5468 and we've already picked him, we would cycle endlessly picking him
5469 again, being unhappy about it, etc. Now we specifically exclude
5470 current guards when picking a new guard.
5471 - Servers send create cells more reliably after the TLS connection
5472 is established: we were sometimes forgetting to send half of them
5473 when we had more than one pending.
5474 - If we get a create cell that asks us to extend somewhere, but the
5475 Tor server there doesn't match the expected digest, we now send
5476 a destroy cell back, rather than silently doing nothing.
5477 - Make options->RedirectExit work again.
5478 - Make cookie authentication for the controller work again.
5479 - Stop being picky about unusual characters in the arguments to
5480 mapaddress. It's none of our business.
5481 - Add a new config option "TestVia" that lets you specify preferred
5482 middle hops to use for test circuits. Perhaps this will let me
5483 debug the reachability problems better.
5485 o Log / documentation fixes:
5486 - If we're a server and some peer has a broken TLS certificate, don't
5487 log about it unless ProtocolWarnings is set, i.e., we want to hear
5488 about protocol violations by others.
5489 - Fix spelling of VirtualAddrNetwork in man page.
5490 - Add a better explanation at the top of the autogenerated torrc file
5491 about what happened to our old torrc.
5494 Changes in version 0.1.1.20 - 2006-05-23
5496 - Downgrade a log severity where servers complain that they're
5498 - Avoid a compile warning on FreeBSD.
5499 - Remove string size limit on NEWDESC messages; solve bug 291.
5500 - Correct the RunAsDaemon entry in the man page; ignore RunAsDaemon
5501 more thoroughly when we're running on windows.
5504 Changes in version 0.1.1.19-rc - 2006-05-03
5506 - Regenerate our local descriptor if it's dirty and we try to use
5507 it locally (e.g. if it changes during reachability detection).
5508 - If we setconf our ORPort to 0, we continued to listen on the
5509 old ORPort and receive connections.
5510 - Avoid a second warning about machine/limits.h on Debian
5512 - Be willing to add our own routerinfo into the routerlist.
5513 Now authorities will include themselves in their directories
5514 and network-statuses.
5515 - Stop trying to upload rendezvous descriptors to every
5516 directory authority: only try the v1 authorities.
5517 - Servers no longer complain when they think they're not
5518 registered with the directory authorities. There were too many
5520 - Backport dist-rpm changes so rpms can be built without errors.
5523 - Implement an option, VirtualAddrMask, to set which addresses
5524 get handed out in response to mapaddress requests. This works
5525 around a bug in tsocks where 127.0.0.0/8 is never socksified.
5528 Changes in version 0.1.1.18-rc - 2006-04-10
5530 - Work harder to download live network-statuses from all the
5531 directory authorities we know about. Improve the threshold
5532 decision logic so we're more robust to edge cases.
5533 - When fetching rendezvous descriptors, we were willing to ask
5534 v2 authorities too, which would always return 404.
5537 - Stop listing down or invalid nodes in the v1 directory. This will
5538 reduce its bulk by about 1/3, and reduce load on directory
5540 - When deciding whether a router is Fast or Guard-worthy, consider
5541 his advertised BandwidthRate and not just the BandwidthCapacity.
5542 - No longer ship INSTALL and README files -- they are useless now.
5543 - Force rpmbuild to behave and honor target_cpu.
5544 - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
5545 - Start to include translated versions of the tor-doc-*.html
5546 files, along with the screenshots. Still needs more work.
5547 - Start sending back 512 and 451 errors if mapaddress fails,
5548 rather than not sending anything back at all.
5549 - When we fail to bind or listen on an incoming or outgoing
5550 socket, we should close it before failing. otherwise we just
5551 leak it. (thanks to weasel for finding.)
5552 - Allow "getinfo dir/status/foo" to work, as long as your DirPort
5553 is enabled. (This is a hack, and will be fixed in 0.1.2.x.)
5554 - Make NoPublish (even though deprecated) work again.
5555 - Fix a minor security flaw where a versioning auth dirserver
5556 could list a recommended version many times in a row to make
5557 clients more convinced that it's recommended.
5558 - Fix crash bug if there are two unregistered servers running
5559 with the same nickname, one of them is down, and you ask for
5560 them by nickname in your EntryNodes or ExitNodes. Also, try
5561 to pick the one that's running rather than an arbitrary one.
5562 - Fix an infinite loop we could hit if we go offline for too long.
5563 - Complain when we hit WSAENOBUFS on recv() or write() too.
5564 Perhaps this will help us hunt the bug.
5565 - If you're not a versioning dirserver, don't put the string
5566 "client-versions \nserver-versions \n" in your network-status.
5567 - Lower the minimum required number of file descriptors to 1000,
5568 so we can have some overhead for Valgrind on Linux, where the
5569 default ulimit -n is 1024.
5572 - Add tor.dizum.com as the fifth authoritative directory server.
5573 - Add a new config option FetchUselessDescriptors, off by default,
5574 for when you plan to run "exitlist" on your client and you want
5575 to know about even the non-running descriptors.
5578 Changes in version 0.1.1.17-rc - 2006-03-28
5580 - Clients and servers since 0.1.1.10-alpha have been expiring
5581 connections whenever they are idle for 5 minutes and they *do*
5582 have circuits on them. Oops. With this new version, clients will
5583 discard their previous entry guard choices and avoid choosing
5584 entry guards running these flawed versions.
5585 - Fix memory leak when uncompressing concatenated zlib streams. This
5586 was causing substantial leaks over time on Tor servers.
5587 - The v1 directory was including servers as much as 48 hours old,
5588 because that's how the new routerlist->routers works. Now only
5589 include them if they're 20 hours old or less.
5592 - Resume building on irix64, netbsd 2.0, etc.
5593 - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
5595 - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
5596 and it is confusing some users.
5597 - Mirrors stop caching the v1 directory so often.
5598 - Make the max number of old descriptors that a cache will hold
5599 rise with the number of directory authorities, so we can scale.
5600 - Change our win32 uname() hack to be more forgiving about what
5601 win32 versions it thinks it's found.
5604 - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
5606 - When the controller's *setconf commands fail, collect an error
5607 message in a string and hand it back to the controller.
5608 - Make the v2 dir's "Fast" flag based on relative capacity, just
5609 like "Stable" is based on median uptime. Name everything in the
5610 top 7/8 Fast, and only the top 1/2 gets to be a Guard.
5611 - Log server fingerprint on startup, so new server operators don't
5612 have to go hunting around their filesystem for it.
5613 - Return a robots.txt on our dirport to discourage google indexing.
5614 - Let the controller ask for GETINFO dir/status/foo so it can ask
5615 directly rather than connecting to the dir port. Only works when
5616 dirport is set for now.
5618 o New config options rather than constants in the code:
5619 - SocksTimeout: How long do we let a socks connection wait
5620 unattached before we fail it?
5621 - CircuitBuildTimeout: Cull non-open circuits that were born
5622 at least this many seconds ago.
5623 - CircuitIdleTimeout: Cull open clean circuits that were born
5624 at least this many seconds ago.
5627 Changes in version 0.1.1.16-rc - 2006-03-18
5628 o Bugfixes on 0.1.1.15-rc:
5629 - Fix assert when the controller asks to attachstream a connect-wait
5630 or resolve-wait stream.
5631 - Now do address rewriting when the controller asks us to attach
5632 to a particular circuit too. This will let Blossom specify
5633 "moria2.exit" without having to learn what moria2's IP address is.
5634 - Make the "tor --verify-config" command-line work again, so people
5635 can automatically check if their torrc will parse.
5636 - Authoritative dirservers no longer require an open connection from
5637 a server to consider him "reachable". We need this change because
5638 when we add new auth dirservers, old servers won't know not to
5640 - Let Tor build on Sun CC again.
5641 - Fix an off-by-one buffer size in dirserv.c that magically never
5642 hit our three authorities but broke sjmurdoch's own tor network.
5643 - If we as a directory mirror don't know of any v1 directory
5644 authorities, then don't try to cache any v1 directories.
5645 - Stop warning about unknown servers in our family when they are
5646 given as hex digests.
5647 - Stop complaining as quickly to the server operator that he
5648 hasn't registered his nickname/key binding.
5649 - Various cleanups so we can add new V2 Auth Dirservers.
5650 - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
5651 reflect the updated flags in our v2 dir protocol.
5652 - Resume allowing non-printable characters for exit streams (both
5653 for connecting and for resolving). Now we tolerate applications
5654 that don't follow the RFCs. But continue to block malformed names
5657 o Bugfixes on 0.1.0.x:
5658 - Fix assert bug in close_logs(): when we close and delete logs,
5659 remove them all from the global "logfiles" list.
5660 - Fix minor integer overflow in calculating when we expect to use up
5661 our bandwidth allocation before hibernating.
5662 - Fix a couple of bugs in OpenSSL detection. Also, deal better when
5663 there are multiple SSLs installed with different versions.
5664 - When we try to be a server and Address is not explicitly set and
5665 our hostname resolves to a private IP address, try to use an
5666 interface address if it has a public address. Now Windows machines
5667 that think of themselves as localhost can work by default.
5670 - Let the controller ask for GETINFO dir/server/foo so it can ask
5671 directly rather than connecting to the dir port.
5672 - Let the controller tell us about certain router descriptors
5673 that it doesn't want Tor to use in circuits. Implement
5674 SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
5675 - New config option SafeSocks to reject all application connections
5676 using unsafe socks protocols. Defaults to off.
5679 Changes in version 0.1.1.15-rc - 2006-03-11
5680 o Bugfixes and cleanups:
5681 - When we're printing strings from the network, don't try to print
5682 non-printable characters. This protects us against shell escape
5683 sequence exploits, and also against attacks to fool humans into
5684 misreading their logs.
5685 - Fix a bug where Tor would fail to establish any connections if you
5686 left it off for 24 hours and then started it: we were happy with
5687 the obsolete network statuses, but they all referred to router
5688 descriptors that were too old to fetch, so we ended up with no
5689 valid router descriptors.
5690 - Fix a seg fault in the controller's "getinfo orconn-status"
5691 command while listing status on incoming handshaking connections.
5692 Introduce a status name "NEW" for these connections.
5693 - If we get a linelist or linelist_s config option from the torrc
5694 (e.g. ExitPolicy) and it has no value, warn and skip rather than
5695 silently resetting it to its default.
5696 - Don't abandon entry guards until they've been down or gone for
5698 - Cleaner and quieter log messages.
5701 - New controller signal NEWNYM that makes new application requests
5703 - Add a new circuit purpose 'controller' to let the controller ask
5704 for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
5705 controller command to let you specify the purpose if you're
5706 starting a new circuit. Add a new SETCIRCUITPURPOSE controller
5707 command to let you change a circuit's purpose after it's been
5709 - Accept "private:*" in routerdesc exit policies; not generated yet
5710 because older Tors do not understand it.
5711 - Add BSD-style contributed startup script "rc.subr" from Peter
5715 Changes in version 0.1.1.14-alpha - 2006-02-20
5716 o Bugfixes on 0.1.1.x:
5717 - Don't die if we ask for a stdout or stderr log (even implicitly)
5718 and we're set to RunAsDaemon -- just warn.
5719 - We still had a few bugs in the OR connection rotation code that
5720 caused directory servers to slowly aggregate connections to other
5721 fast Tor servers. This time for sure!
5722 - Make log entries on Win32 include the name of the function again.
5723 - We were treating a pair of exit policies if they were equal even
5724 if one said accept and the other said reject -- causing us to
5725 not always publish a new descriptor since we thought nothing
5727 - Retry pending server downloads as well as pending networkstatus
5728 downloads when we unexpectedly get a socks request.
5729 - We were ignoring the IS_FAST flag in the directory status,
5730 meaning we were willing to pick trivial-bandwidth nodes for "fast"
5732 - If the controller's SAVECONF command fails (e.g. due to file
5733 permissions), let the controller know that it failed.
5736 - If we're trying to be a Tor server and running Windows 95/98/ME
5737 as a server, explain that we'll likely crash.
5738 - When we're a server, a client asks for an old-style directory,
5739 and our write bucket is empty, don't give it to him. This way
5740 small servers can continue to serve the directory *sometimes*,
5741 without getting overloaded.
5742 - Compress exit policies even more -- look for duplicate lines
5744 - Clients now honor the "guard" flag in the router status when
5745 picking entry guards, rather than looking at is_fast or is_stable.
5746 - Retain unrecognized lines in $DATADIR/state file, so that we can
5747 be forward-compatible.
5748 - Generate 18.0.0.0/8 address policy format in descs when we can;
5749 warn when the mask is not reducible to a bit-prefix.
5750 - Let the user set ControlListenAddress in the torrc. This can be
5751 dangerous, but there are some cases (like a secured LAN) where it
5753 - Split ReachableAddresses into ReachableDirAddresses and
5754 ReachableORAddresses, so we can restrict Dir conns to port 80
5755 and OR conns to port 443.
5756 - Now we can target arch and OS in rpm builds (contributed by
5757 Phobos). Also make the resulting dist-rpm filename match the
5759 - New config options to help controllers: FetchServerDescriptors
5760 and FetchHidServDescriptors for whether to fetch server
5761 info and hidserv info or let the controller do it, and
5762 PublishServerDescriptor and PublishHidServDescriptors.
5763 - Also let the controller set the __AllDirActionsPrivate config
5764 option if you want all directory fetches/publishes to happen via
5765 Tor (it assumes your controller bootstraps your circuits).
5768 Changes in version 0.1.0.17 - 2006-02-17
5769 o Crash bugfixes on 0.1.0.x:
5770 - When servers with a non-zero DirPort came out of hibernation,
5771 sometimes they would trigger an assert.
5773 o Other important bugfixes:
5774 - On platforms that don't have getrlimit (like Windows), we were
5775 artificially constraining ourselves to a max of 1024
5776 connections. Now just assume that we can handle as many as 15000
5777 connections. Hopefully this won't cause other problems.
5779 o Backported features:
5780 - When we're a server, a client asks for an old-style directory,
5781 and our write bucket is empty, don't give it to him. This way
5782 small servers can continue to serve the directory *sometimes*,
5783 without getting overloaded.
5784 - Whenever you get a 503 in response to a directory fetch, try
5785 once more. This will become important once servers start sending
5786 503's whenever they feel busy.
5787 - Fetch a new directory every 120 minutes, not every 40 minutes.
5788 Now that we have hundreds of thousands of users running the old
5789 directory algorithm, it's starting to hurt a lot.
5790 - Bump up the period for forcing a hidden service descriptor upload
5791 from 20 minutes to 1 hour.
5794 Changes in version 0.1.1.13-alpha - 2006-02-09
5795 o Crashes in 0.1.1.x:
5796 - When you tried to setconf ORPort via the controller, Tor would
5797 crash. So people using TorCP to become a server were sad.
5798 - Solve (I hope) the stack-smashing bug that we were seeing on fast
5799 servers. The problem appears to be something do with OpenSSL's
5800 random number generation, or how we call it, or something. Let me
5801 know if the crashes continue.
5802 - Turn crypto hardware acceleration off by default, until we find
5803 somebody smart who can test it for us. (It appears to produce
5804 seg faults in at least some cases.)
5805 - Fix a rare assert error when we've tried all intro points for
5806 a hidden service and we try fetching the service descriptor again:
5807 "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
5810 - Fix a major load balance bug: we were round-robining in 16 KB
5811 chunks, and servers with bandwidthrate of 20 KB, while downloading
5812 a 600 KB directory, would starve their other connections. Now we
5813 try to be a bit more fair.
5814 - Dir authorities and mirrors were never expiring the newest
5815 descriptor for each server, causing memory and directory bloat.
5816 - Fix memory-bloating and connection-bloating bug on servers: We
5817 were never closing any connection that had ever had a circuit on
5818 it, because we were checking conn->n_circuits == 0, yet we had a
5819 bug that let it go negative.
5820 - Make Tor work using squid as your http proxy again -- squid
5821 returns an error if you ask for a URL that's too long, and it uses
5822 a really generic error message. Plus, many people are behind a
5823 transparent squid so they don't even realize it.
5824 - On platforms that don't have getrlimit (like Windows), we were
5825 artificially constraining ourselves to a max of 1024
5826 connections. Now just assume that we can handle as many as 15000
5827 connections. Hopefully this won't cause other problems.
5828 - Add a new config option ExitPolicyRejectPrivate which defaults to
5829 1. This means all exit policies will begin with rejecting private
5830 addresses, unless the server operator explicitly turns it off.
5833 - Clients no longer download descriptors for non-running
5835 - Before we add new directory authorities, we should make it
5836 clear that only v1 authorities should receive/publish hidden
5837 service descriptors.
5840 - As soon as we've fetched some more directory info, immediately
5841 try to download more server descriptors. This way we don't have
5842 a 10 second pause during initial bootstrapping.
5843 - Remove even more loud log messages that the server operator can't
5845 - When we're running an obsolete or un-recommended version, make
5846 the log message more clear about what the problem is and what
5847 versions *are* still recommended.
5848 - Provide a more useful warn message when our onion queue gets full:
5849 the CPU is too slow or the exit policy is too liberal.
5850 - Don't warn when we receive a 503 from a dirserver/cache -- this
5851 will pave the way for them being able to refuse if they're busy.
5852 - When we fail to bind a listener, try to provide a more useful
5853 log message: e.g., "Is Tor already running?"
5854 - Adjust tor-spec to parameterize cell and key lengths. Now Ian
5855 Goldberg can prove things about our handshake protocol more
5857 - MaxConn has been obsolete for a while now. Document the ConnLimit
5858 config option, which is a *minimum* number of file descriptors
5859 that must be available else Tor refuses to start.
5860 - Apply Matt Ghali's --with-syslog-facility patch to ./configure
5861 if you log to syslog and want something other than LOG_DAEMON.
5862 - Make dirservers generate a separate "guard" flag to mean,
5863 "would make a good entry guard". Make clients parse it and vote
5864 on it. Not used by clients yet.
5865 - Implement --with-libevent-dir option to ./configure. Also, improve
5866 search techniques to find libevent, and use those for openssl too.
5867 - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
5868 - Only start testing reachability once we've established a
5869 circuit. This will make startup on dirservers less noisy.
5870 - Don't try to upload hidden service descriptors until we have
5871 established a circuit.
5872 - Fix the controller's "attachstream 0" command to treat conn like
5873 it just connected, doing address remapping, handling .exit and
5874 .onion idioms, and so on. Now we're more uniform in making sure
5875 that the controller hears about new and closing connections.
5878 Changes in version 0.1.1.12-alpha - 2006-01-11
5879 o Bugfixes on 0.1.1.x:
5880 - The fix to close duplicate server connections was closing all
5881 Tor client connections if they didn't establish a circuit
5882 quickly enough. Oops.
5883 - Fix minor memory issue (double-free) that happened on exit.
5885 o Bugfixes on 0.1.0.x:
5886 - Tor didn't warn when it failed to open a log file.
5889 Changes in version 0.1.1.11-alpha - 2006-01-10
5890 o Crashes in 0.1.1.x:
5891 - Include all the assert/crash fixes from 0.1.0.16.
5892 - If you start Tor and then quit very quickly, there were some
5893 races that tried to free things that weren't allocated yet.
5894 - Fix a rare memory stomp if you're running hidden services.
5895 - Fix segfault when specifying DirServer in config without nickname.
5896 - Fix a seg fault when you finish connecting to a server but at
5897 that moment you dump his server descriptor.
5898 - Extendcircuit and Attachstream controller commands would
5899 assert/crash if you don't give them enough arguments.
5900 - Fix an assert error when we're out of space in the connection_list
5901 and we try to post a hidden service descriptor (reported by weasel).
5902 - If you specify a relative torrc path and you set RunAsDaemon in
5903 your torrc, then it chdir()'s to the new directory. If you HUP,
5904 it tries to load the new torrc location, fails, and exits.
5905 The fix: no longer allow a relative path to torrc using -f.
5908 - Implement "entry guards": automatically choose a handful of entry
5909 nodes and stick with them for all circuits. Only pick new guards
5910 when the ones you have are unsuitable, and if the old guards
5911 become suitable again, switch back. This will increase security
5912 dramatically against certain end-point attacks. The EntryNodes
5913 config option now provides some hints about which entry guards you
5914 want to use most; and StrictEntryNodes means to only use those.
5915 - New directory logic: download by descriptor digest, not by
5916 fingerprint. Caches try to download all listed digests from
5917 authorities; clients try to download "best" digests from caches.
5918 This avoids partitioning and isolating attacks better.
5919 - Make the "stable" router flag in network-status be the median of
5920 the uptimes of running valid servers, and make clients pay
5921 attention to the network-status flags. Thus the cutoff adapts
5922 to the stability of the network as a whole, making IRC, IM, etc
5923 connections more reliable.
5926 - Tor servers with dynamic IP addresses were needing to wait 18
5927 hours before they could start doing reachability testing using
5928 the new IP address and ports. This is because they were using
5929 the internal descriptor to learn what to test, yet they were only
5930 rebuilding the descriptor once they decided they were reachable.
5931 - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
5932 to download certain server descriptors, throw them away, and then
5933 fetch them again after 30 minutes. Now mirrors throw away these
5934 server descriptors so clients can't get them.
5935 - We were leaving duplicate connections to other ORs open for a week,
5936 rather than closing them once we detect a duplicate. This only
5937 really affected authdirservers, but it affected them a lot.
5938 - Spread the authdirservers' reachability testing over the entire
5939 testing interval, so we don't try to do 500 TLS's at once every
5943 - If the network is down, and we try to connect to a conn because
5944 we have a circuit in mind, and we timeout (30 seconds) because the
5945 network never answers, we were expiring the circuit, but we weren't
5946 obsoleting the connection or telling the entry_guards functions.
5947 - Some Tor servers process billions of cells per day. These statistics
5948 need to be uint64_t's.
5949 - Check for integer overflows in more places, when adding elements
5950 to smartlists. This could possibly prevent a buffer overflow
5951 on malicious huge inputs. I don't see any, but I haven't looked
5953 - ReachableAddresses kept growing new "reject *:*" lines on every
5955 - When you "setconf log" via the controller, it should remove all
5956 logs. We were automatically adding back in a "log notice stdout".
5957 - Newly bootstrapped Tor networks couldn't establish hidden service
5958 circuits until they had nodes with high uptime. Be more tolerant.
5959 - We were marking servers down when they could not answer every piece
5960 of the directory request we sent them. This was far too harsh.
5961 - Fix the torify (tsocks) config file to not use Tor for localhost
5963 - Directory authorities now go to the proper authority when asking for
5964 a networkstatus, even when they want a compressed one.
5965 - Fix a harmless bug that was causing Tor servers to log
5966 "Got an end because of misc error, but we're not an AP. Closing."
5967 - Authorities were treating their own descriptor changes as cosmetic,
5968 meaning the descriptor available in the network-status and the
5969 descriptor that clients downloaded were different.
5970 - The OS X installer was adding a symlink for tor_resolve but
5971 the binary was called tor-resolve (reported by Thomas Hardly).
5972 - Workaround a problem with some http proxies where they refuse GET
5973 requests that specify "Content-Length: 0" (reported by Adrian).
5974 - Fix wrong log message when you add a "HiddenServiceNodes" config
5975 line without any HiddenServiceDir line (reported by Chris Thomas).
5978 - Write the TorVersion into the state file so we have a prayer of
5979 keeping forward and backward compatibility.
5980 - Revive the FascistFirewall config option rather than eliminating it:
5981 now it's a synonym for ReachableAddresses *:80,*:443.
5982 - Clients choose directory servers from the network status lists,
5983 not from their internal list of router descriptors. Now they can
5984 go to caches directly rather than needing to go to authorities
5986 - Directory authorities ignore router descriptors that have only
5987 cosmetic differences: do this for 0.1.0.x servers now too.
5988 - Add a new flag to network-status indicating whether the server
5989 can answer v2 directory requests too.
5990 - Authdirs now stop whining so loudly about bad descriptors that
5991 they fetch from other dirservers. So when there's a log complaint,
5992 it's for sure from a freshly uploaded descriptor.
5993 - Reduce memory requirements in our structs by changing the order
5995 - There used to be two ways to specify your listening ports in a
5996 server descriptor: on the "router" line and with a separate "ports"
5997 line. Remove support for the "ports" line.
5998 - New config option "AuthDirRejectUnlisted" for auth dirservers as
5999 a panic button: if we get flooded with unusable servers we can
6000 revert to only listing servers in the approved-routers file.
6001 - Auth dir servers can now mark a fingerprint as "!reject" or
6002 "!invalid" in the approved-routers file (as its nickname), to
6003 refuse descriptors outright or include them but marked as invalid.
6004 - Servers store bandwidth history across restarts/crashes.
6005 - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
6006 get a better idea of why their circuits failed. Not used yet.
6007 - Directory mirrors now cache up to 16 unrecognized network-status
6008 docs. Now we can add new authdirservers and they'll be cached too.
6009 - When picking a random directory, prefer non-authorities if any
6011 - New controller option "getinfo desc/all-recent" to fetch the
6012 latest server descriptor for every router that Tor knows about.
6015 Changes in version 0.1.0.16 - 2006-01-02
6016 o Crash bugfixes on 0.1.0.x:
6017 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
6018 corrupting the heap, losing FDs, or crashing when we need to resize
6019 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
6020 - It turns out sparc64 platforms crash on unaligned memory access
6021 too -- so detect and avoid this.
6022 - Handle truncated compressed data correctly (by detecting it and
6024 - Fix possible-but-unlikely free(NULL) in control.c.
6025 - When we were closing connections, there was a rare case that
6026 stomped on memory, triggering seg faults and asserts.
6027 - Avoid potential infinite recursion when building a descriptor. (We
6028 don't know that it ever happened, but better to fix it anyway.)
6029 - We were neglecting to unlink marked circuits from soon-to-close OR
6030 connections, which caused some rare scribbling on freed memory.
6031 - Fix a memory stomping race bug when closing the joining point of two
6032 rendezvous circuits.
6033 - Fix an assert in time parsing found by Steven Murdoch.
6035 o Other bugfixes on 0.1.0.x:
6036 - When we're doing reachability testing, provide more useful log
6037 messages so the operator knows what to expect.
6038 - Do not check whether DirPort is reachable when we are suppressing
6039 advertising it because of hibernation.
6040 - When building with -static or on Solaris, we sometimes needed -ldl.
6041 - When we're deciding whether a stream has enough circuits around
6042 that can handle it, count the freshly dirty ones and not the ones
6043 that are so dirty they won't be able to handle it.
6044 - When we're expiring old circuits, we had a logic error that caused
6045 us to close new rendezvous circuits rather than old ones.
6046 - Give a more helpful log message when you try to change ORPort via
6047 the controller: you should upgrade Tor if you want that to work.
6048 - We were failing to parse Tor versions that start with "Tor ".
6049 - Tolerate faulty streams better: when a stream fails for reason
6050 exitpolicy, stop assuming that the router is lying about his exit
6051 policy. When a stream fails for reason misc, allow it to retry just
6052 as if it was resolvefailed. When a stream has failed three times,
6053 reset its failure count so we can try again and get all three tries.
6056 Changes in version 0.1.1.10-alpha - 2005-12-11
6057 o Correctness bugfixes on 0.1.0.x:
6058 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
6059 corrupting the heap, losing FDs, or crashing when we need to resize
6060 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
6061 - Stop doing the complex voodoo overkill checking for insecure
6062 Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
6063 - When we were closing connections, there was a rare case that
6064 stomped on memory, triggering seg faults and asserts.
6065 - We were neglecting to unlink marked circuits from soon-to-close OR
6066 connections, which caused some rare scribbling on freed memory.
6067 - When we're deciding whether a stream has enough circuits around
6068 that can handle it, count the freshly dirty ones and not the ones
6069 that are so dirty they won't be able to handle it.
6070 - Recover better from TCP connections to Tor servers that are
6071 broken but don't tell you (it happens!); and rotate TLS
6072 connections once a week.
6073 - When we're expiring old circuits, we had a logic error that caused
6074 us to close new rendezvous circuits rather than old ones.
6075 - Fix a scary-looking but apparently harmless bug where circuits
6076 would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
6077 servers, and never switch to state CIRCUIT_STATE_OPEN.
6078 - When building with -static or on Solaris, we sometimes needed to
6080 - Give a useful message when people run Tor as the wrong user,
6081 rather than telling them to start chowning random directories.
6082 - We were failing to inform the controller about new .onion streams.
6084 o Security bugfixes on 0.1.0.x:
6085 - Refuse server descriptors if the fingerprint line doesn't match
6086 the included identity key. Tor doesn't care, but other apps (and
6087 humans) might actually be trusting the fingerprint line.
6088 - We used to kill the circuit when we receive a relay command we
6089 don't recognize. Now we just drop it.
6090 - Start obeying our firewall options more rigorously:
6091 . If we can't get to a dirserver directly, try going via Tor.
6092 . Don't ever try to connect (as a client) to a place our
6093 firewall options forbid.
6094 . If we specify a proxy and also firewall options, obey the
6095 firewall options even when we're using the proxy: some proxies
6096 can only proxy to certain destinations.
6097 - Fix a bug found by Lasse Overlier: when we were making internal
6098 circuits (intended to be cannibalized later for rendezvous and
6099 introduction circuits), we were picking them so that they had
6100 useful exit nodes. There was no need for this, and it actually
6101 aids some statistical attacks.
6102 - Start treating internal circuits and exit circuits separately.
6103 It's important to keep them separate because internal circuits
6104 have their last hops picked like middle hops, rather than like
6105 exit hops. So exiting on them will break the user's expectations.
6107 o Bugfixes on 0.1.1.x:
6108 - Take out the mis-feature where we tried to detect IP address
6109 flapping for people with DynDNS, and chose not to upload a new
6110 server descriptor sometimes.
6111 - Try to be compatible with OpenSSL 0.9.6 again.
6112 - Log fix: when the controller is logging about .onion addresses,
6113 sometimes it didn't include the ".onion" part of the address.
6114 - Don't try to modify options->DirServers internally -- if the
6115 user didn't specify any, just add the default ones directly to
6116 the trusted dirserver list. This fixes a bug where people running
6117 controllers would use SETCONF on some totally unrelated config
6118 option, and Tor would start yelling at them about changing their
6120 - Let the controller's redirectstream command specify a port, in
6121 case the controller wants to change that too.
6122 - When we requested a pile of server descriptors, we sometimes
6123 accidentally launched a duplicate request for the first one.
6124 - Bugfix for trackhostexits: write down the fingerprint of the
6125 chosen exit, not its nickname, because the chosen exit might not
6127 - When parsing foo.exit, if foo is unknown, and we are leaving
6128 circuits unattached, set the chosen_exit field and leave the
6129 address empty. This matters because controllers got confused
6131 - Directory authorities no longer try to download server
6132 descriptors that they know they will reject.
6134 o Features and updates:
6135 - Replace balanced trees with hash tables: this should make stuff
6136 significantly faster.
6137 - Resume using the AES counter-mode implementation that we ship,
6138 rather than OpenSSL's. Ours is significantly faster.
6139 - Many other CPU and memory improvements.
6140 - Add a new config option FastFirstHopPK (on by default) so clients
6141 do a trivial crypto handshake for their first hop, since TLS has
6142 already taken care of confidentiality and authentication.
6143 - Add a new config option TestSocks so people can see if their
6144 applications are using socks4, socks4a, socks5-with-ip, or
6145 socks5-with-hostname. This way they don't have to keep mucking
6146 with tcpdump and wondering if something got cached somewhere.
6147 - Warn when listening on a public address for socks. I suspect a
6148 lot of people are setting themselves up as open socks proxies,
6149 and they have no idea that jerks on the Internet are using them,
6150 since they simply proxy the traffic into the Tor network.
6151 - Add "private:*" as an alias in configuration for policies. Now
6152 you can simplify your exit policy rather than needing to list
6153 every single internal or nonroutable network space.
6154 - Add a new controller event type that allows controllers to get
6155 all server descriptors that were uploaded to a router in its role
6156 as authoritative dirserver.
6157 - Start shipping socks-extensions.txt, tor-doc-unix.html,
6158 tor-doc-server.html, and stylesheet.css in the tarball.
6159 - Stop shipping tor-doc.html in the tarball.
6162 Changes in version 0.1.1.9-alpha - 2005-11-15
6163 o Usability improvements:
6164 - Start calling it FooListenAddress rather than FooBindAddress,
6165 since few of our users know what it means to bind an address
6167 - Reduce clutter in server logs. We're going to try to make
6168 them actually usable now. New config option ProtocolWarnings that
6169 lets you hear about how _other Tors_ are breaking the protocol. Off
6171 - Divide log messages into logging domains. Once we put some sort
6172 of interface on this, it will let people looking at more verbose
6173 log levels specify the topics they want to hear more about.
6174 - Make directory servers return better http 404 error messages
6175 instead of a generic "Servers unavailable".
6176 - Check for even more Windows version flags when writing the platform
6177 string in server descriptors, and note any we don't recognize.
6178 - Clean up more of the OpenSSL memory when exiting, so we can detect
6179 memory leaks better.
6180 - Make directory authorities be non-versioning, non-naming by
6181 default. Now we can add new directory servers without requiring
6182 their operators to pay close attention.
6183 - When logging via syslog, include the pid whenever we provide
6184 a log entry. Suggested by Todd Fries.
6186 o Performance improvements:
6187 - Directory servers now silently throw away new descriptors that
6188 haven't changed much if the timestamps are similar. We do this to
6189 tolerate older Tor servers that upload a new descriptor every 15
6190 minutes. (It seemed like a good idea at the time.)
6191 - Inline bottleneck smartlist functions; use fast versions by default.
6192 - Add a "Map from digest to void*" abstraction digestmap_t so we
6193 can do less hex encoding/decoding. Use it in router_get_by_digest()
6194 to resolve a performance bottleneck.
6195 - Allow tor_gzip_uncompress to extract as much as possible from
6196 truncated compressed data. Try to extract as many
6197 descriptors as possible from truncated http responses (when
6198 DIR_PURPOSE_FETCH_ROUTERDESC).
6199 - Make circ->onionskin a pointer, not a static array. moria2 was using
6200 125000 circuit_t's after it had been up for a few weeks, which
6201 translates to 20+ megs of wasted space.
6202 - The private half of our EDH handshake keys are now chosen out
6203 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
6205 o Security improvements:
6206 - Start making directory caches retain old routerinfos, so soon
6207 clients can start asking by digest of descriptor rather than by
6208 fingerprint of server.
6209 - Add half our entropy from RAND_poll in OpenSSL. This knows how
6210 to use egd (if present), openbsd weirdness (if present), vms/os2
6211 weirdness (if we ever port there), and more in the future.
6213 o Bugfixes on 0.1.0.x:
6214 - Do round-robin writes of at most 16 kB per write. This might be
6215 more fair on loaded Tor servers, and it might resolve our Windows
6216 crash bug. It might also slow things down.
6217 - Our TLS handshakes were generating a single public/private
6218 keypair for the TLS context, rather than making a new one for
6219 each new connections. Oops. (But we were still rotating them
6220 periodically, so it's not so bad.)
6221 - When we were cannibalizing a circuit with a particular exit
6222 node in mind, we weren't checking to see if that exit node was
6223 already present earlier in the circuit. Oops.
6224 - When a Tor server's IP changes (e.g. from a dyndns address),
6225 upload a new descriptor so clients will learn too.
6226 - Really busy servers were keeping enough circuits open on stable
6227 connections that they were wrapping around the circuit_id
6228 space. (It's only two bytes.) This exposed a bug where we would
6229 feel free to reuse a circuit_id even if it still exists but has
6230 been marked for close. Try to fix this bug. Some bug remains.
6231 - If we would close a stream early (e.g. it asks for a .exit that
6232 we know would refuse it) but the LeaveStreamsUnattached config
6233 option is set by the controller, then don't close it.
6235 o Bugfixes on 0.1.1.8-alpha:
6236 - Fix a big pile of memory leaks, some of them serious.
6237 - Do not try to download a routerdesc if we would immediately reject
6239 - Resume inserting a newline between all router descriptors when
6240 generating (old style) signed directories, since our spec says
6242 - When providing content-type application/octet-stream for
6243 server descriptors using .z, we were leaving out the
6244 content-encoding header. Oops. (Everything tolerated this just
6245 fine, but that doesn't mean we need to be part of the problem.)
6246 - Fix a potential seg fault in getconf and getinfo using version 1
6247 of the controller protocol.
6248 - Avoid crash: do not check whether DirPort is reachable when we
6249 are suppressing it because of hibernation.
6250 - Make --hash-password not crash on exit.
6253 Changes in version 0.1.1.8-alpha - 2005-10-07
6254 o New features (major):
6255 - Clients don't download or use the directory anymore. Now they
6256 download and use network-statuses from the trusted dirservers,
6257 and fetch individual server descriptors as needed from mirrors.
6258 See dir-spec.txt for all the gory details.
6259 - Be more conservative about whether to advertise our DirPort.
6260 The main change is to not advertise if we're running at capacity
6261 and either a) we could hibernate or b) our capacity is low and
6262 we're using a default DirPort.
6263 - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
6265 o New features (minor):
6266 - Try to be smart about when to retry network-status and
6267 server-descriptor fetches. Still needs some tuning.
6268 - Stop parsing, storing, or using running-routers output (but
6269 mirrors still cache and serve it).
6270 - Consider a threshold of versioning dirservers (dirservers who have
6271 an opinion about which Tor versions are still recommended) before
6272 deciding whether to warn the user that he's obsolete.
6273 - Dirservers can now reject/invalidate by key and IP, with the
6274 config options "AuthDirInvalid" and "AuthDirReject". This is
6275 useful since currently we automatically list servers as running
6276 and usable even if we know they're jerks.
6277 - Provide dire warnings to any users who set DirServer; move it out
6278 of torrc.sample and into torrc.complete.
6279 - Add MyFamily to torrc.sample in the server section.
6280 - Add nicknames to the DirServer line, so we can refer to them
6281 without requiring all our users to memorize their IP addresses.
6282 - When we get an EOF or a timeout on a directory connection, note
6283 how many bytes of serverdesc we are dropping. This will help
6284 us determine whether it is smart to parse incomplete serverdesc
6286 - Add a new function to "change pseudonyms" -- that is, to stop
6287 using any currently-dirty circuits for new streams, so we don't
6288 link new actions to old actions. Currently it's only called on
6289 HUP (or SIGNAL RELOAD).
6290 - On sighup, if UseHelperNodes changed to 1, use new circuits.
6291 - Start using RAND_bytes rather than RAND_pseudo_bytes from
6292 OpenSSL. Also, reseed our entropy every hour, not just at
6293 startup. And entropy in 512-bit chunks, not 160-bit chunks.
6295 o Fixes on 0.1.1.7-alpha:
6296 - Nobody ever implemented EVENT_ADDRMAP for control protocol
6297 version 0, so don't let version 0 controllers ask for it.
6298 - If you requested something with too many newlines via the
6299 v1 controller protocol, you could crash tor.
6300 - Fix a number of memory leaks, including some pretty serious ones.
6301 - Re-enable DirPort testing again, so Tor servers will be willing
6302 to advertise their DirPort if it's reachable.
6303 - On TLS handshake, only check the other router's nickname against
6304 its expected nickname if is_named is set.
6306 o Fixes forward-ported from 0.1.0.15:
6307 - Don't crash when we don't have any spare file descriptors and we
6308 try to spawn a dns or cpu worker.
6309 - Make the numbers in read-history and write-history into uint64s,
6310 so they don't overflow and publish negatives in the descriptor.
6313 - For the OS X package's modified privoxy config file, comment
6314 out the "logfile" line so we don't log everything passed
6316 - We were whining about using socks4 or socks5-with-local-lookup
6317 even when it's an IP in the "virtual" range we designed exactly
6319 - We were leaking some memory every time the client changes IPs.
6320 - Never call free() on tor_malloc()d memory. This will help us
6321 use dmalloc to detect memory leaks.
6322 - Check for named servers when looking them up by nickname;
6323 warn when we'recalling a non-named server by its nickname;
6324 don't warn twice about the same name.
6325 - Try to list MyFamily elements by key, not by nickname, and warn
6326 if we've not heard of the server.
6327 - Make windows platform detection (uname equivalent) smarter.
6328 - It turns out sparc64 doesn't like unaligned access either.
6331 Changes in version 0.1.0.15 - 2005-09-23
6332 o Bugfixes on 0.1.0.x:
6333 - Reject ports 465 and 587 (spam targets) in default exit policy.
6334 - Don't crash when we don't have any spare file descriptors and we
6335 try to spawn a dns or cpu worker.
6336 - Get rid of IgnoreVersion undocumented config option, and make us
6337 only warn, never exit, when we're running an obsolete version.
6338 - Don't try to print a null string when your server finds itself to
6339 be unreachable and the Address config option is empty.
6340 - Make the numbers in read-history and write-history into uint64s,
6341 so they don't overflow and publish negatives in the descriptor.
6342 - Fix a minor memory leak in smartlist_string_remove().
6343 - We were only allowing ourselves to upload a server descriptor at
6344 most every 20 minutes, even if it changed earlier than that.
6345 - Clean up log entries that pointed to old URLs.
6348 Changes in version 0.1.1.7-alpha - 2005-09-14
6349 o Fixes on 0.1.1.6-alpha:
6350 - Exit servers were crashing when people asked them to make a
6351 connection to an address not in their exit policy.
6352 - Looking up a non-existent stream for a v1 control connection would
6354 - Fix a seg fault if we ask a dirserver for a descriptor by
6355 fingerprint but he doesn't know about him.
6356 - SETCONF was appending items to linelists, not clearing them.
6357 - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
6358 out and refuse the setconf if it would fail.
6359 - Downgrade the dirserver log messages when whining about
6363 - Add Peter Palfrader's check-tor script to tor/contrib/
6364 It lets you easily check whether a given server (referenced by
6365 nickname) is reachable by you.
6366 - Numerous changes to move towards client-side v2 directories. Not
6370 - If the user gave tor an odd number of command-line arguments,
6371 we were silently ignoring the last one. Now we complain and fail.
6372 [This wins the oldest-bug prize -- this bug has been present since
6373 November 2002, as released in Tor 0.0.0.]
6374 - Do not use unaligned memory access on alpha, mips, or mipsel.
6375 It *works*, but is very slow, so we treat them as if it doesn't.
6376 - Retry directory requests if we fail to get an answer we like
6377 from a given dirserver (we were retrying before, but only if
6378 we fail to connect).
6379 - When writing the RecommendedVersions line, sort them first.
6380 - When the client asked for a rendezvous port that the hidden
6381 service didn't want to provide, we were sending an IP address
6382 back along with the end cell. Fortunately, it was zero. But stop
6384 - Correct "your server is reachable" log entries to indicate that
6385 it was self-testing that told us so.
6388 Changes in version 0.1.1.6-alpha - 2005-09-09
6389 o Fixes on 0.1.1.5-alpha:
6390 - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
6391 - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
6392 - Fix bug with tor_memmem finding a match at the end of the string.
6393 - Make unit tests run without segfaulting.
6394 - Resolve some solaris x86 compile warnings.
6395 - Handle duplicate lines in approved-routers files without warning.
6396 - Fix bug where as soon as a server refused any requests due to his
6397 exit policy (e.g. when we ask for localhost and he tells us that's
6398 127.0.0.1 and he won't do it), we decided he wasn't obeying his
6399 exit policy using him for any exits.
6400 - Only do openssl hardware accelerator stuff if openssl version is
6403 o New controller features/fixes:
6404 - Add a "RESETCONF" command so you can set config options like
6405 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
6406 a config option in the torrc with no value, then it clears it
6407 entirely (rather than setting it to its default).
6408 - Add a "GETINFO config-file" to tell us where torrc is.
6409 - Avoid sending blank lines when GETINFO replies should be empty.
6410 - Add a QUIT command for the controller (for using it manually).
6411 - Fix a bug in SAVECONF that was adding default dirservers and
6412 other redundant entries to the torrc file.
6414 o Start on the new directory design:
6415 - Generate, publish, cache, serve new network-status format.
6416 - Publish individual descriptors (by fingerprint, by "all", and by
6418 - Publish client and server recommended versions separately.
6419 - Allow tor_gzip_uncompress() to handle multiple concatenated
6420 compressed strings. Serve compressed groups of router
6421 descriptors. The compression logic here could be more
6423 - Distinguish v1 authorities (all currently trusted directories)
6424 from v2 authorities (all trusted directories).
6425 - Change DirServers config line to note which dirs are v1 authorities.
6426 - Add configuration option "V1AuthoritativeDirectory 1" which
6427 moria1, moria2, and tor26 should set.
6428 - Remove option when getting directory cache to see whether they
6429 support running-routers; they all do now. Replace it with one
6430 to see whether caches support v2 stuff.
6433 - Dirservers now do their own external reachability testing of each
6434 Tor server, and only list them as running if they've been found to
6435 be reachable. We also send back warnings to the server's logs if
6436 it uploads a descriptor that we already believe is unreachable.
6437 - Implement exit enclaves: if we know an IP address for the
6438 destination, and there's a running Tor server at that address
6439 which allows exit to the destination, then extend the circuit to
6440 that exit first. This provides end-to-end encryption and end-to-end
6441 authentication. Also, if the user wants a .exit address or enclave,
6442 use 4 hops rather than 3, and cannibalize a general circ for it
6444 - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
6445 controller. Also, rotate dns and cpu workers if the controller
6446 changes options that will affect them; and initialize the dns
6447 worker cache tree whether or not we start out as a server.
6448 - Only upload a new server descriptor when options change, 18
6449 hours have passed, uptime is reset, or bandwidth changes a lot.
6450 - Check [X-]Forwarded-For headers in HTTP requests when generating
6451 log messages. This lets people run dirservers (and caches) behind
6452 Apache but still know which IP addresses are causing warnings.
6454 o Config option changes:
6455 - Replace (Fascist)Firewall* config options with a new
6456 ReachableAddresses option that understands address policies.
6457 For example, "ReachableAddresses *:80,*:443"
6458 - Get rid of IgnoreVersion undocumented config option, and make us
6459 only warn, never exit, when we're running an obsolete version.
6460 - Make MonthlyAccountingStart config option truly obsolete now.
6463 - Reject ports 465 and 587 in the default exit policy, since
6464 people have started using them for spam too.
6465 - It turns out we couldn't bootstrap a network since we added
6466 reachability detection in 0.1.0.1-rc. Good thing the Tor network
6467 has never gone down. Add an AssumeReachable config option to let
6468 servers and dirservers bootstrap. When we're trying to build a
6469 high-uptime or high-bandwidth circuit but there aren't enough
6470 suitable servers, try being less picky rather than simply failing.
6471 - Our logic to decide if the OR we connected to was the right guy
6472 was brittle and maybe open to a mitm for unverified routers.
6473 - We weren't cannibalizing circuits correctly for
6474 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
6475 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
6476 build those from scratch. This should make hidden services faster.
6477 - Predict required circuits better, with an eye toward making hidden
6478 services faster on the service end.
6479 - Retry streams if the exit node sends back a 'misc' failure. This
6480 should result in fewer random failures. Also, after failing
6481 from resolve failed or misc, reset the num failures, so we give
6482 it a fair shake next time we try.
6483 - Clean up the rendezvous warn log msgs, and downgrade some to info.
6484 - Reduce severity on logs about dns worker spawning and culling.
6485 - When we're shutting down and we do something like try to post a
6486 server descriptor or rendezvous descriptor, don't complain that
6487 we seem to be unreachable. Of course we are, we're shutting down.
6488 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
6489 We don't use them yet, but maybe one day our DNS resolver will be
6490 able to discover them.
6491 - Make ContactInfo mandatory for authoritative directory servers.
6492 - Require server descriptors to list IPv4 addresses -- hostnames
6493 are no longer allowed. This also fixes some potential security
6494 problems with people providing hostnames as their address and then
6495 preferentially resolving them to partition users.
6496 - Change log line for unreachability to explicitly suggest /etc/hosts
6497 as the culprit. Also make it clearer what IP address and ports we're
6498 testing for reachability.
6499 - Put quotes around user-supplied strings when logging so users are
6500 more likely to realize if they add bad characters (like quotes)
6502 - Let auth dir servers start without specifying an Address config
6504 - Make unit tests (and other invocations that aren't the real Tor)
6505 run without launching listeners, creating subdirectories, and so on.
6508 Changes in version 0.1.1.5-alpha - 2005-08-08
6509 o Bugfixes included in 0.1.0.14.
6511 o Bugfixes on 0.1.0.x:
6512 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
6513 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
6514 it would silently using ignore the 6668.
6517 Changes in version 0.1.0.14 - 2005-08-08
6518 o Bugfixes on 0.1.0.x:
6519 - Fix the other half of the bug with crypto handshakes
6521 - Fix an assert trigger if you send a 'signal term' via the
6522 controller when it's listening for 'event info' messages.
6525 Changes in version 0.1.1.4-alpha - 2005-08-04
6526 o Bugfixes included in 0.1.0.13.
6529 - Improve tor_gettimeofday() granularity on windows.
6530 - Make clients regenerate their keys when their IP address changes.
6531 - Implement some more GETINFO goodness: expose helper nodes, config
6532 options, getinfo keys.
6535 Changes in version 0.1.0.13 - 2005-08-04
6536 o Bugfixes on 0.1.0.x:
6537 - Fix a critical bug in the security of our crypto handshakes.
6538 - Fix a size_t underflow in smartlist_join_strings2() that made
6539 it do bad things when you hand it an empty smartlist.
6540 - Fix Windows installer to ship Tor license (thanks to Aphex for
6541 pointing out this oversight) and put a link to the doc directory
6543 - Explicitly set no-unaligned-access for sparc: it turns out the
6544 new gcc's let you compile broken code, but that doesn't make it
6548 Changes in version 0.1.1.3-alpha - 2005-07-23
6549 o Bugfixes on 0.1.1.2-alpha:
6550 - Fix a bug in handling the controller's "post descriptor"
6552 - Fix several bugs in handling the controller's "extend circuit"
6554 - Fix a bug in handling the controller's "stream status" event.
6555 - Fix an assert failure if we have a controller listening for
6556 circuit events and we go offline.
6557 - Re-allow hidden service descriptors to publish 0 intro points.
6558 - Fix a crash when generating your hidden service descriptor if
6559 you don't have enough intro points already.
6561 o New features on 0.1.1.2-alpha:
6562 - New controller function "getinfo accounting", to ask how
6563 many bytes we've used in this time period.
6564 - Experimental support for helper nodes: a lot of the risk from
6565 a small static adversary comes because users pick new random
6566 nodes every time they rebuild a circuit. Now users will try to
6567 stick to the same small set of entry nodes if they can. Not
6568 enabled by default yet.
6570 o Bugfixes on 0.1.0.12:
6571 - If you're an auth dir server, always publish your dirport,
6572 even if you haven't yet found yourself to be reachable.
6573 - Fix a size_t underflow in smartlist_join_strings2() that made
6574 it do bad things when you hand it an empty smartlist.
6577 Changes in version 0.1.0.12 - 2005-07-18
6578 o New directory servers:
6579 - tor26 has changed IP address.
6581 o Bugfixes on 0.1.0.x:
6582 - Fix a possible double-free in tor_gzip_uncompress().
6583 - When --disable-threads is set, do not search for or link against
6585 - Don't trigger an assert if an authoritative directory server
6586 claims its dirport is 0.
6587 - Fix bug with removing Tor as an NT service: some people were
6588 getting "The service did not return an error." Thanks to Matt
6592 Changes in version 0.1.1.2-alpha - 2005-07-15
6593 o New directory servers:
6594 - tor26 has changed IP address.
6596 o Bugfixes on 0.1.0.x, crashes/leaks:
6597 - Port the servers-not-obeying-their-exit-policies fix from
6599 - Fix an fd leak in start_daemon().
6600 - On Windows, you can't always reopen a port right after you've
6601 closed it. So change retry_listeners() to only close and re-open
6602 ports that have changed.
6603 - Fix a possible double-free in tor_gzip_uncompress().
6605 o Bugfixes on 0.1.0.x, usability:
6606 - When tor_socketpair() fails in Windows, give a reasonable
6607 Windows-style errno back.
6608 - Let people type "tor --install" as well as "tor -install" when
6610 want to make it an NT service.
6611 - NT service patch from Matt Edman to improve error messages.
6612 - When the controller asks for a config option with an abbreviated
6613 name, give the full name in our response.
6614 - Correct the man page entry on TrackHostExitsExpire.
6615 - Looks like we were never delivering deflated (i.e. compressed)
6616 running-routers lists, even when asked. Oops.
6617 - When --disable-threads is set, do not search for or link against
6620 o Bugfixes on 0.1.1.x:
6621 - Fix a seg fault with autodetecting which controller version is
6625 - New hidden service descriptor format: put a version in it, and
6626 let people specify introduction/rendezvous points that aren't
6627 in "the directory" (which is subjective anyway).
6628 - Allow the DEBUG controller event to work again. Mark certain log
6629 entries as "don't tell this to controllers", so we avoid cycles.
6632 Changes in version 0.1.0.11 - 2005-06-30
6633 o Bugfixes on 0.1.0.x:
6634 - Fix major security bug: servers were disregarding their
6635 exit policies if clients behaved unexpectedly.
6636 - Make OS X init script check for missing argument, so we don't
6637 confuse users who invoke it incorrectly.
6638 - Fix a seg fault in "tor --hash-password foo".
6639 - The MAPADDRESS control command was broken.
6642 Changes in version 0.1.1.1-alpha - 2005-06-29
6644 - Make OS X init script check for missing argument, so we don't
6645 confuse users who invoke it incorrectly.
6646 - Fix a seg fault in "tor --hash-password foo".
6647 - Fix a possible way to DoS dirservers.
6648 - When we complain that your exit policy implicitly allows local or
6649 private address spaces, name them explicitly so operators can
6651 - Make the log message less scary when all the dirservers are
6652 temporarily unreachable.
6653 - We were printing the number of idle dns workers incorrectly when
6657 - Revised controller protocol (version 1) that uses ascii rather
6658 than binary. Add supporting libraries in python and java so you
6659 can use the controller from your applications without caring how
6661 - Spiffy new support for crypto hardware accelerators. Can somebody
6665 Changes in version 0.0.9.10 - 2005-06-16
6666 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
6667 - Refuse relay cells that claim to have a length larger than the
6668 maximum allowed. This prevents a potential attack that could read
6669 arbitrary memory (e.g. keys) from an exit server's process
6673 Changes in version 0.1.0.10 - 2005-06-14
6674 o Allow a few EINVALs from libevent before dying. Warn on kqueue with
6675 libevent before 1.1a.
6678 Changes in version 0.1.0.9-rc - 2005-06-09
6680 - Reset buf->highwater every time buf_shrink() is called, not just on
6681 a successful shrink. This was causing significant memory bloat.
6682 - Fix buffer overflow when checking hashed passwords.
6683 - Security fix: if seeding the RNG on Win32 fails, quit.
6684 - Allow seeding the RNG on Win32 even when you're not running as
6686 - Disable threading on Solaris too. Something is wonky with it,
6687 cpuworkers, and reentrant libs.
6688 - Reenable the part of the code that tries to flush as soon as an
6689 OR outbuf has a full TLS record available. Perhaps this will make
6690 OR outbufs not grow as huge except in rare cases, thus saving lots
6691 of CPU time plus memory.
6692 - Reject malformed .onion addresses rather then passing them on as
6693 normal web requests.
6694 - Adapt patch from Adam Langley: fix possible memory leak in
6695 tor_lookup_hostname().
6696 - Initialize libevent later in the startup process, so the logs are
6697 already established by the time we start logging libevent warns.
6698 - Use correct errno on win32 if libevent fails.
6699 - Check and warn about known-bad/slow libevent versions.
6700 - Pay more attention to the ClientOnly config option.
6701 - Have torctl.in/tor.sh.in check for location of su binary (needed
6703 - Correct/add man page entries for LongLivedPorts, ExitPolicy,
6704 KeepalivePeriod, ClientOnly, NoPublish, HttpProxy, HttpsProxy,
6705 HttpProxyAuthenticator
6706 - Stop warning about sigpipes in the logs. We're going to
6707 pretend that getting these occassionally is normal and fine.
6708 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in
6710 installer screens; and don't put stuff into StartupItems unless
6711 the user asks you to.
6712 - Require servers that use the default dirservers to have public IP
6713 addresses. We have too many servers that are configured with private
6714 IPs and their admins never notice the log entries complaining that
6715 their descriptors are being rejected.
6716 - Add OSX uninstall instructions. An actual uninstall script will
6720 Changes in version 0.1.0.8-rc - 2005-05-23
6722 - It turns out that kqueue on OS X 10.3.9 was causing kernel
6723 panics. Disable kqueue on all OS X Tors.
6724 - Fix RPM: remove duplicate line accidentally added to the rpm
6726 - Disable threads on openbsd too, since its gethostaddr is not
6728 - Tolerate libevent 0.8 since it still works, even though it's
6730 - Enable building on Red Hat 9.0 again.
6731 - Allow the middle hop of the testing circuit to be running any
6732 version, now that most of them have the bugfix to let them connect
6733 to unknown servers. This will allow reachability testing to work
6734 even when 0.0.9.7-0.0.9.9 become obsolete.
6735 - Handle relay cells with rh.length too large. This prevents
6736 a potential attack that could read arbitrary memory (maybe even
6737 keys) from the exit server's process.
6738 - We screwed up the dirport reachability testing when we don't yet
6739 have a cached version of the directory. Hopefully now fixed.
6740 - Clean up router_load_single_router() (used by the controller),
6741 so it doesn't seg fault on error.
6742 - Fix a minor memory leak when somebody establishes an introduction
6743 point at your Tor server.
6744 - If a socks connection ends because read fails, don't warn that
6745 you're not sending a socks reply back.
6748 - Add HttpProxyAuthenticator config option too, that works like
6749 the HttpsProxyAuthenticator config option.
6750 - Encode hashed controller passwords in hex instead of base64,
6751 to make it easier to write controllers.
6754 Changes in version 0.1.0.7-rc - 2005-05-17
6756 - Fix a bug in the OS X package installer that prevented it from
6757 installing on Tiger.
6758 - Fix a script bug in the OS X package installer that made it
6759 complain during installation.
6760 - Find libevent even if it's hiding in /usr/local/ and your
6761 CFLAGS and LDFLAGS don't tell you to look there.
6762 - Be able to link with libevent as a shared library (the default
6763 after 1.0d), even if it's hiding in /usr/local/lib and even
6764 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
6765 assuming you're running gcc. Otherwise fail and give a useful
6767 - Fix a bug in the RPM packager: set home directory for _tor to
6768 something more reasonable when first installing.
6769 - Free a minor amount of memory that is still reachable on exit.
6772 Changes in version 0.1.0.6-rc - 2005-05-14
6774 - Implement --disable-threads configure option. Disable threads on
6775 netbsd by default, because it appears to have no reentrant resolver
6777 - Apple's OS X 10.4.0 ships with a broken kqueue. The new libevent
6778 release (1.1) detects and disables kqueue if it's broken.
6779 - Append default exit policy before checking for implicit internal
6780 addresses. Now we don't log a bunch of complaints on startup
6781 when using the default exit policy.
6782 - Some people were putting "Address " in their torrc, and they had
6783 a buggy resolver that resolved " " to 0.0.0.0. Oops.
6784 - If DataDir is ~/.tor, and that expands to /.tor, then default to
6785 LOCALSTATEDIR/tor instead.
6786 - Fix fragmented-message bug in TorControl.py.
6787 - Resolve a minor bug which would prevent unreachable dirports
6788 from getting suppressed in the published descriptor.
6789 - When the controller gave us a new descriptor, we weren't resolving
6790 it immediately, so Tor would think its address was 0.0.0.0 until
6791 we fetched a new directory.
6792 - Fix an uppercase/lowercase case error in suppressing a bogus
6793 libevent warning on some Linuxes.
6796 - Begin scrubbing sensitive strings from logs by default. Turn off
6797 the config option SafeLogging if you need to do debugging.
6798 - Switch to a new buffer management algorithm, which tries to avoid
6799 reallocing and copying quite as much. In first tests it looks like
6800 it uses *more* memory on average, but less cpu.
6801 - First cut at support for "create-fast" cells. Clients can use
6802 these when extending to their first hop, since the TLS already
6803 provides forward secrecy and authentication. Not enabled on
6805 - When dirservers refuse a router descriptor, we now log its
6806 contactinfo, platform, and the poster's IP address.
6807 - Call tor_free_all instead of connections_free_all after forking, to
6808 save memory on systems that need to fork.
6809 - Whine at you if you're a server and you don't set your contactinfo.
6810 - Implement --verify-config command-line option to check if your torrc
6811 is valid without actually launching Tor.
6812 - Rewrite address "serifos.exit" to "localhost.serifos.exit"
6813 rather than just rejecting it.
6816 Changes in version 0.1.0.5-rc - 2005-04-27
6818 - Stop trying to print a null pointer if an OR conn fails because
6819 we didn't like its cert.
6821 - Switch our internal buffers implementation to use a ring buffer,
6822 to hopefully improve performance for fast servers a lot.
6823 - Add HttpsProxyAuthenticator support (basic auth only), based
6824 on patch from Adam Langley.
6825 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
6826 the fast servers that have been joining lately.
6827 - Give hidden service accesses extra time on the first attempt,
6828 since 60 seconds is often only barely enough. This might improve
6830 - Improve performance for dirservers: stop re-parsing the whole
6831 directory every time you regenerate it.
6832 - Add more debugging info to help us find the weird dns freebsd
6833 pthreads bug; cleaner debug messages to help track future issues.
6836 Changes in version 0.0.9.9 - 2005-04-23
6837 o Bugfixes on 0.0.9.x:
6838 - If unofficial Tor clients connect and send weird TLS certs, our
6839 Tor server triggers an assert. This release contains a minimal
6840 backport from the broader fix that we put into 0.1.0.4-rc.
6843 Changes in version 0.1.0.4-rc - 2005-04-23
6845 - If unofficial Tor clients connect and send weird TLS certs, our
6846 Tor server triggers an assert. Stop asserting, and start handling
6847 TLS errors better in other situations too.
6848 - When the controller asks us to tell it about all the debug-level
6849 logs, it turns out we were generating debug-level logs while
6850 telling it about them, which turns into a bad loop. Now keep
6851 track of whether you're sending a debug log to the controller,
6852 and don't log when you are.
6853 - Fix the "postdescriptor" feature of the controller interface: on
6854 non-complete success, only say "done" once.
6856 - Clients are now willing to load balance over up to 2mB, not 1mB,
6857 of advertised bandwidth capacity.
6858 - Add a NoPublish config option, so you can be a server (e.g. for
6859 testing running Tor servers in other Tor networks) without
6860 publishing your descriptor to the primary dirservers.
6863 Changes in version 0.1.0.3-rc - 2005-04-08
6864 o Improvements on 0.1.0.2-rc:
6865 - Client now retries when streams end early for 'hibernating' or
6866 'resource limit' reasons, rather than failing them.
6867 - More automated handling for dirserver operators:
6868 - Automatically approve nodes running 0.1.0.2-rc or later,
6869 now that the the reachability detection stuff is working.
6870 - Now we allow two unverified servers with the same nickname
6871 but different keys. But if a nickname is verified, only that
6872 nickname+key are allowed.
6873 - If you're an authdirserver connecting to an address:port,
6874 and it's not the OR you were expecting, forget about that
6875 descriptor. If he *was* the one you were expecting, then forget
6876 about all other descriptors for that address:port.
6877 - Allow servers to publish descriptors from 12 hours in the future.
6878 Corollary: only whine about clock skew from the dirserver if
6879 he's a trusted dirserver (since now even verified servers could
6880 have quite wrong clocks).
6881 - Adjust maximum skew and age for rendezvous descriptors: let skew
6882 be 48 hours rather than 90 minutes.
6883 - Efficiency improvements:
6884 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
6885 it much faster to look up a circuit for each relay cell.
6886 - Remove most calls to assert_all_pending_dns_resolves_ok(),
6887 since they're eating our cpu on exit nodes.
6888 - Stop wasting time doing a case insensitive comparison for every
6889 dns name every time we do any lookup. Canonicalize the names to
6890 lowercase and be done with it.
6891 - Start sending 'truncated' cells back rather than destroy cells,
6892 if the circuit closes in front of you. This means we won't have
6893 to abandon partially built circuits.
6894 - Only warn once per nickname from add_nickname_list_to_smartlist
6895 per failure, so an entrynode or exitnode choice that's down won't
6897 - Put a note in the torrc about abuse potential with the default
6899 - Revise control spec and implementation to allow all log messages to
6900 be sent to controller with their severities intact (suggested by
6901 Matt Edman). Update TorControl to handle new log event types.
6902 - Provide better explanation messages when controller's POSTDESCRIPTOR
6904 - Stop putting nodename in the Platform string in server descriptors.
6905 It doesn't actually help, and it is confusing/upsetting some people.
6907 o Bugfixes on 0.1.0.2-rc:
6908 - We were printing the host mask wrong in exit policies in server
6909 descriptors. This isn't a critical bug though, since we were still
6910 obeying the exit policy internally.
6911 - Fix Tor when compiled with libevent but without pthreads: move
6912 connection_unregister() from _connection_free() to
6914 - Fix an assert trigger (already fixed in 0.0.9.x): when we have
6915 the rare mysterious case of accepting a conn on 0.0.0.0:0, then
6916 when we look through the connection array, we'll find any of the
6917 cpu/dnsworkers. This is no good.
6919 o Bugfixes on 0.0.9.8:
6920 - Fix possible bug on threading platforms (e.g. win32) which was
6921 leaking a file descriptor whenever a cpuworker or dnsworker died.
6922 - When using preferred entry or exit nodes, ignore whether the
6923 circuit wants uptime or capacity. They asked for the nodes, they
6925 - chdir() to your datadirectory at the *end* of the daemonize process,
6926 not the beginning. This was a problem because the first time you
6927 run tor, if your datadir isn't there, and you have runasdaemon set
6928 to 1, it will try to chdir to it before it tries to create it. Oops.
6929 - Handle changed router status correctly when dirserver reloads
6930 fingerprint file. We used to be dropping all unverified descriptors
6931 right then. The bug was hidden because we would immediately
6932 fetch a directory from another dirserver, which would include the
6933 descriptors we just dropped.
6934 - When we're connecting to an OR and he's got a different nickname/key
6935 than we were expecting, only complain loudly if we're an OP or a
6936 dirserver. Complaining loudly to the OR admins just confuses them.
6937 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
6938 artificially capped at 500kB.
6941 Changes in version 0.0.9.8 - 2005-04-07
6942 o Bugfixes on 0.0.9.x:
6943 - We have a bug that I haven't found yet. Sometimes, very rarely,
6944 cpuworkers get stuck in the 'busy' state, even though the cpuworker
6945 thinks of itself as idle. This meant that no new circuits ever got
6946 established. Here's a workaround to kill any cpuworker that's been
6947 busy for more than 100 seconds.
6950 Changes in version 0.1.0.2-rc - 2005-04-01
6951 o Bugfixes on 0.1.0.1-rc:
6952 - Fixes on reachability detection:
6953 - Don't check for reachability while hibernating.
6954 - If ORPort is reachable but DirPort isn't, still publish the
6955 descriptor, but zero out DirPort until it's found reachable.
6956 - When building testing circs for ORPort testing, use only
6957 high-bandwidth nodes, so fewer circuits fail.
6958 - Complain about unreachable ORPort separately from unreachable
6959 DirPort, so the user knows what's going on.
6960 - Make sure we only conclude ORPort reachability if we didn't
6961 initiate the conn. Otherwise we could falsely conclude that
6962 we're reachable just because we connected to the guy earlier
6963 and he used that same pipe to extend to us.
6964 - Authdirservers shouldn't do ORPort reachability detection,
6965 since they're in clique mode, so it will be rare to find a
6966 server not already connected to them.
6967 - When building testing circuits, always pick middle hops running
6968 Tor 0.0.9.7, so we avoid the "can't extend to unknown routers"
6969 bug. (This is a kludge; it will go away when 0.0.9.x becomes
6971 - When we decide we're reachable, actually publish our descriptor
6973 - Fix bug in redirectstream in the controller.
6974 - Fix the state descriptor strings so logs don't claim edge streams
6975 are in a different state than they actually are.
6976 - Use recent libevent features when possible (this only really affects
6977 win32 and osx right now, because the new libevent with these
6978 features hasn't been released yet). Add code to suppress spurious
6980 - Prevent possible segfault in connection_close_unattached_ap().
6981 - Fix newlines on torrc in win32.
6982 - Improve error msgs when tor-resolve fails.
6984 o Improvements on 0.0.9.x:
6985 - New experimental script tor/contrib/ExerciseServer.py (needs more
6986 work) that uses the controller interface to build circuits and
6987 fetch pages over them. This will help us bootstrap servers that
6988 have lots of capacity but haven't noticed it yet.
6989 - New experimental script tor/contrib/PathDemo.py (needs more work)
6990 that uses the controller interface to let you choose whole paths
6992 "<hostname>.<path,separated by dots>.<length of path>.path"
6993 - When we've connected to an OR and handshaked but didn't like
6994 the result, we were closing the conn without sending destroy
6995 cells back for pending circuits. Now send those destroys.
6998 Changes in version 0.0.9.7 - 2005-04-01
6999 o Bugfixes on 0.0.9.x:
7000 - Fix another race crash bug (thanks to Glenn Fink for reporting).
7001 - Compare identity to identity, not to nickname, when extending to
7002 a router not already in the directory. This was preventing us from
7003 extending to unknown routers. Oops.
7004 - Make sure to create OS X Tor user in <500 range, so we aren't
7005 creating actual system users.
7006 - Note where connection-that-hasn't-sent-end was marked, and fix
7007 a few really loud instances of this harmless bug (it's fixed more
7011 Changes in version 0.1.0.1-rc - 2005-03-28
7013 - Add reachability testing. Your Tor server will automatically try
7014 to see if its ORPort and DirPort are reachable from the outside,
7015 and it won't upload its descriptor until it decides they are.
7016 - Handle unavailable hidden services better. Handle slow or busy
7017 hidden services better.
7018 - Add support for CONNECTing through https proxies, with "HttpsProxy"
7020 - New exit policy: accept most low-numbered ports, rather than
7021 rejecting most low-numbered ports.
7022 - More Tor controller support (still experimental). See
7023 http://tor.eff.org/doc/control-spec.txt for all the new features,
7024 including signals to emulate unix signals from any platform;
7025 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
7026 closestream; closecircuit; etc.
7027 - Make nt services work and start on startup on win32 (based on
7028 patch by Matt Edman).
7029 - Add a new AddressMap config directive to rewrite incoming socks
7030 addresses. This lets you, for example, declare an implicit
7031 required exit node for certain sites.
7032 - Add a new TrackHostExits config directive to trigger addressmaps
7033 for certain incoming socks addresses -- for sites that break when
7034 your exit keeps changing (based on patch by Mike Perry).
7035 - Redo the client-side dns cache so it's just an addressmap too.
7036 - Notice when our IP changes, and reset stats/uptime/reachability.
7037 - When an application is using socks5, give him the whole variety of
7038 potential socks5 responses (connect refused, host unreachable, etc),
7039 rather than just "success" or "failure".
7040 - A more sane version numbering system. See
7041 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
7042 - New contributed script "exitlist": a simple python script to
7043 parse directories and find Tor nodes that exit to listed
7045 - New contributed script "privoxy-tor-toggle" to toggle whether
7046 Privoxy uses Tor. Seems to be configured for Debian by default.
7047 - Report HTTP reasons to client when getting a response from directory
7048 servers -- so you can actually know what went wrong.
7049 - New config option MaxAdvertisedBandwidth which lets you advertise
7050 a low bandwidthrate (to not attract as many circuits) while still
7051 allowing a higher bandwidthrate in reality.
7053 o Robustness/stability fixes:
7054 - Make Tor use Niels Provos's libevent instead of its current
7055 poll-but-sometimes-select mess. This will let us use faster async
7056 cores (like epoll, kpoll, and /dev/poll), and hopefully work better
7058 - pthread support now too. This was forced because when we forked,
7059 we ended up wasting a lot of duplicate ram over time. Also switch
7060 to foo_r versions of some library calls to allow reentry and
7062 - Better handling for heterogeneous / unreliable nodes:
7063 - Annotate circuits w/ whether they aim to contain high uptime nodes
7064 and/or high capacity nodes. When building circuits, choose
7066 - This means that every single node in an intro rend circuit,
7067 not just the last one, will have a minimum uptime.
7068 - New config option LongLivedPorts to indicate application streams
7069 that will want high uptime circuits.
7070 - Servers reset uptime when a dir fetch entirely fails. This
7071 hopefully reflects stability of the server's network connectivity.
7072 - If somebody starts his tor server in Jan 2004 and then fixes his
7073 clock, don't make his published uptime be a year.
7074 - Reset published uptime when you wake up from hibernation.
7075 - Introduce a notion of 'internal' circs, which are chosen without
7076 regard to the exit policy of the last hop. Intro and rendezvous
7077 circs must be internal circs, to avoid leaking information. Resolve
7078 and connect streams can use internal circs if they want.
7079 - New circuit pooling algorithm: make sure to have enough circs around
7080 to satisfy any predicted ports, and also make sure to have 2 internal
7081 circs around if we've required internal circs lately (and with high
7082 uptime if we've seen that lately too).
7083 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
7084 which describes how often we retry making new circuits if current
7085 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
7086 how long we're willing to make use of an already-dirty circuit.
7087 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
7088 circ as necessary, if there are any completed ones lying around
7089 when we try to launch one.
7090 - Make hidden services try to establish a rendezvous for 30 seconds,
7091 rather than for n (where n=3) attempts to build a circuit.
7092 - Change SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to a config option
7093 "ShutdownWaitLength".
7094 - Try to be more zealous about calling connection_edge_end when
7095 things go bad with edge conns in connection.c.
7096 - Revise tor-spec to add more/better stream end reasons.
7097 - Revise all calls to connection_edge_end to avoid sending "misc",
7098 and to take errno into account where possible.
7101 - Fix a race condition that can trigger an assert, when we have a
7102 pending create cell and an OR connection fails right then.
7103 - Fix several double-mark-for-close bugs, e.g. where we were finding
7104 a conn for a cell even if that conn is already marked for close.
7105 - Make sequence of log messages when starting on win32 with no config
7106 file more reasonable.
7107 - When choosing an exit node for a new non-internal circ, don't take
7108 into account whether it'll be useful for any pending x.onion
7109 addresses -- it won't.
7110 - Turn addr_policy_compare from a tristate to a quadstate; this should
7111 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
7112 for google.com" problem.
7113 - Make "platform" string in descriptor more accurate for Win32 servers,
7114 so it's not just "unknown platform".
7115 - Fix an edge case in parsing config options (thanks weasel).
7116 If they say "--" on the commandline, it's not an option.
7117 - Reject odd-looking addresses at the client (e.g. addresses that
7118 contain a colon), rather than having the server drop them because
7120 - tor-resolve requests were ignoring .exit if there was a working circuit
7121 they could use instead.
7122 - REUSEADDR on normal platforms means you can rebind to the port
7123 right after somebody else has let it go. But REUSEADDR on win32
7124 means to let you bind to the port _even when somebody else
7125 already has it bound_! So, don't do that on Win32.
7126 - Change version parsing logic: a version is "obsolete" if it is not
7127 recommended and (1) there is a newer recommended version in the
7128 same series, or (2) there are no recommended versions in the same
7129 series, but there are some recommended versions in a newer series.
7130 A version is "new" if it is newer than any recommended version in
7132 - Stop most cases of hanging up on a socks connection without sending
7136 - Require BandwidthRate to be at least 20kB/s for servers.
7137 - When a dirserver causes you to give a warn, mention which dirserver
7139 - New config option DirAllowPrivateAddresses for authdirservers.
7140 Now by default they refuse router descriptors that have non-IP or
7141 private-IP addresses.
7142 - Stop publishing socksport in the directory, since it's not
7143 actually meant to be public. For compatibility, publish a 0 there
7145 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
7146 smart" value, that is low for servers and high for clients.
7147 - If our clock jumps forward by 100 seconds or more, assume something
7148 has gone wrong with our network and abandon all not-yet-used circs.
7149 - Warn when exit policy implicitly allows local addresses.
7150 - If we get an incredibly skewed timestamp from a dirserver mirror
7151 that isn't a verified OR, don't warn -- it's probably him that's
7153 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
7154 cookies to disk and doesn't log each web request to disk. (Thanks
7155 to Brett Carrington for pointing this out.)
7156 - When a client asks us for a dir mirror and we don't have one,
7157 launch an attempt to get a fresh one.
7158 - If we're hibernating and we get a SIGINT, exit immediately.
7159 - Add --with-dmalloc ./configure option, to track memory leaks.
7160 - And try to free all memory on closing, so we can detect what
7162 - Cache local dns resolves correctly even when they're .exit
7164 - Give a better warning when some other server advertises an
7165 ORPort that is actually an apache running ssl.
7166 - Add "opt hibernating 1" to server descriptor to make it clearer
7167 whether the server is hibernating.
7170 Changes in version 0.0.9.6 - 2005-03-24
7171 o Bugfixes on 0.0.9.x (crashes and asserts):
7172 - Add new end stream reasons to maintainance branch. Fix bug where
7173 reason (8) could trigger an assert. Prevent bug from recurring.
7174 - Apparently win32 stat wants paths to not end with a slash.
7175 - Fix assert triggers in assert_cpath_layer_ok(), where we were
7176 blowing away the circuit that conn->cpath_layer points to, then
7177 checking to see if the circ is well-formed. Backport check to make
7178 sure we dont use the cpath on a closed connection.
7179 - Prevent circuit_resume_edge_reading_helper() from trying to package
7180 inbufs for marked-for-close streams.
7181 - Don't crash on hup if your options->address has become unresolvable.
7182 - Some systems (like OS X) sometimes accept() a connection and tell
7183 you the remote host is 0.0.0.0:0. If this happens, due to some
7184 other mis-features, we get confused; so refuse the conn for now.
7186 o Bugfixes on 0.0.9.x (other):
7187 - Fix harmless but scary "Unrecognized content encoding" warn message.
7188 - Add new stream error reason: TORPROTOCOL reason means "you are not
7189 speaking a version of Tor I understand; say bye-bye to your stream."
7190 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
7191 into the future, now that we are more tolerant of skew. This
7192 resolves a bug where a Tor server would refuse to cache a directory
7193 because all the directories it gets are too far in the future;
7194 yet the Tor server never logs any complaints about clock skew.
7195 - Mac packaging magic: make man pages useable, and do not overwrite
7196 existing torrc files.
7197 - Make OS X log happily to /var/log/tor/tor.log
7200 Changes in version 0.0.9.5 - 2005-02-22
7201 o Bugfixes on 0.0.9.x:
7202 - Fix an assert race at exit nodes when resolve requests fail.
7203 - Stop picking unverified dir mirrors--it only leads to misery.
7204 - Patch from Matt Edman to make NT services work better. Service
7205 support is still not compiled into the executable by default.
7206 - Patch from Dmitri Bely so the Tor service runs better under
7207 the win32 SYSTEM account.
7208 - Make tor-resolve actually work (?) on Win32.
7209 - Fix a sign bug when getrlimit claims to have 4+ billion
7210 file descriptors available.
7211 - Stop refusing to start when bandwidthburst == bandwidthrate.
7212 - When create cells have been on the onion queue more than five
7213 seconds, just send back a destroy and take them off the list.
7216 Changes in version 0.0.9.4 - 2005-02-03
7217 o Bugfixes on 0.0.9:
7218 - Fix an assert bug that took down most of our servers: when
7219 a server claims to have 1 GB of bandwidthburst, don't
7221 - Don't crash as badly if we have spawned the max allowed number
7222 of dnsworkers, or we're out of file descriptors.
7223 - Block more file-sharing ports in the default exit policy.
7224 - MaxConn is now automatically set to the hard limit of max
7225 file descriptors we're allowed (ulimit -n), minus a few for
7227 - Give a clearer message when servers need to raise their
7228 ulimit -n when they start running out of file descriptors.
7229 - SGI Compatibility patches from Jan Schaumann.
7230 - Tolerate a corrupt cached directory better.
7231 - When a dirserver hasn't approved your server, list which one.
7232 - Go into soft hibernation after 95% of the bandwidth is used,
7233 not 99%. This is especially important for daily hibernators who
7234 have a small accounting max. Hopefully it will result in fewer
7235 cut connections when the hard hibernation starts.
7236 - Load-balance better when using servers that claim more than
7237 800kB/s of capacity.
7238 - Make NT services work (experimental, only used if compiled in).
7241 Changes in version 0.0.9.3 - 2005-01-21
7242 o Bugfixes on 0.0.9:
7243 - Backport the cpu use fixes from main branch, so busy servers won't
7244 need as much processor time.
7245 - Work better when we go offline and then come back, or when we
7246 run Tor at boot before the network is up. We do this by
7247 optimistically trying to fetch a new directory whenever an
7248 application request comes in and we think we're offline -- the
7249 human is hopefully a good measure of when the network is back.
7250 - Backport some minimal hidserv bugfixes: keep rend circuits open as
7251 long as you keep using them; actually publish hidserv descriptors
7252 shortly after they change, rather than waiting 20-40 minutes.
7253 - Enable Mac startup script by default.
7254 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
7255 - When you update AllowUnverifiedNodes or FirewallPorts via the
7256 controller's setconf feature, we were always appending, never
7258 - When you update HiddenServiceDir via setconf, it was screwing up
7259 the order of reading the lines, making it fail.
7260 - Do not rewrite a cached directory back to the cache; otherwise we
7261 will think it is recent and not fetch a newer one on startup.
7262 - Workaround for webservers that lie about Content-Encoding: Tor
7263 now tries to autodetect compressed directories and compression
7264 itself. This lets us Proxypass dir fetches through apache.
7267 Changes in version 0.0.9.2 - 2005-01-04
7268 o Bugfixes on 0.0.9 (crashes and asserts):
7269 - Fix an assert on startup when the disk is full and you're logging
7271 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
7272 style address, then we'd crash.
7273 - Fix an assert trigger when the running-routers string we get from
7274 a dirserver is broken.
7275 - Make worker threads start and run on win32. Now win32 servers
7277 - Bandaid (not actually fix, but now it doesn't crash) an assert
7278 where the dns worker dies mysteriously and the main Tor process
7279 doesn't remember anything about the address it was resolving.
7281 o Bugfixes on 0.0.9 (Win32):
7282 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
7283 name out of the warning/assert messages.
7284 - Fix a superficial "unhandled error on read" bug on win32.
7285 - The win32 installer no longer requires a click-through for our
7286 license, since our Free Software license grants rights but does not
7288 - Win32: When connecting to a dirserver fails, try another one
7289 immediately. (This was already working for non-win32 Tors.)
7290 - Stop trying to parse $HOME on win32 when hunting for default
7292 - Make tor-resolve.c work on win32 by calling network_init().
7294 o Bugfixes on 0.0.9 (other):
7295 - Make 0.0.9.x build on Solaris again.
7296 - Due to a fencepost error, we were blowing away the \n when reporting
7297 confvalue items in the controller. So asking for multiple config
7298 values at once couldn't work.
7299 - When listing circuits that are pending on an opening OR connection,
7300 if we're an OR we were listing circuits that *end* at us as
7301 being pending on every listener, dns/cpu worker, etc. Stop that.
7302 - Dirservers were failing to create 'running-routers' or 'directory'
7303 strings if we had more than some threshold of routers. Fix them so
7304 they can handle any number of routers.
7305 - Fix a superficial "Duplicate mark for close" bug.
7306 - Stop checking for clock skew for OR connections, even for servers.
7307 - Fix a fencepost error that was chopping off the last letter of any
7308 nickname that is the maximum allowed nickname length.
7309 - Update URLs in log messages so they point to the new website.
7310 - Fix a potential problem in mangling server private keys while
7311 writing to disk (not triggered yet, as far as we know).
7312 - Include the licenses for other free software we include in Tor,
7313 now that we're shipping binary distributions more regularly.
7316 Changes in version 0.0.9.1 - 2004-12-15
7317 o Bugfixes on 0.0.9:
7318 - Make hibernation actually work.
7319 - Make HashedControlPassword config option work.
7320 - When we're reporting event circuit status to a controller,
7321 don't use the stream status code.
7324 Changes in version 0.0.9 - 2004-12-12
7326 - Clean up manpage and torrc.sample file.
7327 - Clean up severities and text of log warnings.
7329 - Make servers trigger an assert when they enter hibernation.
7332 Changes in version 0.0.9rc7 - 2004-12-08
7333 o Bugfixes on 0.0.9rc:
7334 - Fix a stack-trashing crash when an exit node begins hibernating.
7335 - Avoid looking at unallocated memory while considering which
7336 ports we need to build circuits to cover.
7337 - Stop a sigpipe: when an 'end' cell races with eof from the app,
7338 we shouldn't hold-open-until-flush if the eof arrived first.
7339 - Fix a bug with init_cookie_authentication() in the controller.
7340 - When recommending new-format log lines, if the upper bound is
7341 LOG_ERR, leave it implicit.
7343 o Bugfixes on 0.0.8.1:
7344 - Fix a whole slew of memory leaks.
7345 - Fix isspace() and friends so they still make Solaris happy
7346 but also so they don't trigger asserts on win32.
7347 - Fix parse_iso_time on platforms without strptime (eg win32).
7348 - win32: tolerate extra "readable" events better.
7349 - win32: when being multithreaded, leave parent fdarray open.
7350 - Make unit tests work on win32.
7353 Changes in version 0.0.9rc6 - 2004-12-06
7354 o Bugfixes on 0.0.9pre:
7355 - Clean up some more integer underflow opportunities (not exploitable
7357 - While hibernating, hup should not regrow our listeners.
7358 - Send an end to the streams we close when we hibernate, rather
7359 than just chopping them off.
7360 - React to eof immediately on non-open edge connections.
7362 o Bugfixes on 0.0.8.1:
7363 - Calculate timeout for waiting for a connected cell from the time
7364 we sent the begin cell, not from the time the stream started. If
7365 it took a long time to establish the circuit, we would time out
7366 right after sending the begin cell.
7367 - Fix router_compare_addr_to_addr_policy: it was not treating a port
7368 of * as always matching, so we were picking reject *:* nodes as
7369 exit nodes too. Oops.
7372 - New circuit building strategy: keep a list of ports that we've
7373 used in the past 6 hours, and always try to have 2 circuits open
7374 or on the way that will handle each such port. Seed us with port
7375 80 so web users won't complain that Tor is "slow to start up".
7376 - Make kill -USR1 dump more useful stats about circuits.
7377 - When warning about retrying or giving up, print the address, so
7378 the user knows which one it's talking about.
7379 - If you haven't used a clean circuit in an hour, throw it away,
7380 just to be on the safe side. (This means after 6 hours a totally
7381 unused Tor client will have no circuits open.)
7384 Changes in version 0.0.9rc5 - 2004-12-01
7385 o Bugfixes on 0.0.8.1:
7386 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
7387 - Let resolve conns retry/expire also, rather than sticking around
7389 - If we are using select, make sure we stay within FD_SETSIZE.
7391 o Bugfixes on 0.0.9pre:
7392 - Fix integer underflow in tor_vsnprintf() that may be exploitable,
7393 but doesn't seem to be currently; thanks to Ilja van Sprundel for
7395 - If anybody set DirFetchPostPeriod, give them StatusFetchPeriod
7396 instead. Impose minima and maxima for all *Period options; impose
7397 even tighter maxima for fetching if we are a caching dirserver.
7398 Clip rather than rejecting.
7399 - Fetch cached running-routers from servers that serve it (that is,
7400 authdirservers and servers running 0.0.9rc5-cvs or later.)
7403 - Accept *:706 (silc) in default exit policy.
7404 - Implement new versioning format for post 0.1.
7405 - Support "foo.nickname.exit" addresses, to let Alice request the
7406 address "foo" as viewed by exit node "nickname". Based on a patch
7408 - Make tor --version --version dump the cvs Id of every file.
7411 Changes in version 0.0.9rc4 - 2004-11-28
7412 o Bugfixes on 0.0.8.1:
7413 - Make windows sockets actually non-blocking (oops), and handle
7414 win32 socket errors better.
7416 o Bugfixes on 0.0.9rc1:
7417 - Actually catch the -USR2 signal.
7420 Changes in version 0.0.9rc3 - 2004-11-25
7421 o Bugfixes on 0.0.8.1:
7422 - Flush the log file descriptor after we print "Tor opening log file",
7423 so we don't see those messages days later.
7425 o Bugfixes on 0.0.9rc1:
7426 - Make tor-resolve work again.
7427 - Avoid infinite loop in tor-resolve if tor hangs up on it.
7428 - Fix an assert trigger for clients/servers handling resolves.
7431 Changes in version 0.0.9rc2 - 2004-11-24
7432 o Bugfixes on 0.0.9rc1:
7433 - I broke socks5 support while fixing the eof bug.
7434 - Allow unitless bandwidths and intervals; they default to bytes
7436 - New servers don't start out hibernating; they are active until
7437 they run out of bytes, so they have a better estimate of how
7438 long it takes, and so their operators can know they're working.
7441 Changes in version 0.0.9rc1 - 2004-11-23
7442 o Bugfixes on 0.0.8.1:
7443 - Finally fix a bug that's been plaguing us for a year:
7444 With high load, circuit package window was reaching 0. Whenever
7445 we got a circuit-level sendme, we were reading a lot on each
7446 socket, but only writing out a bit. So we would eventually reach
7447 eof. This would be noticed and acted on even when there were still
7448 bytes sitting in the inbuf.
7449 - When poll() is interrupted, we shouldn't believe the revents values.
7451 o Bugfixes on 0.0.9pre6:
7452 - Fix hibernate bug that caused pre6 to be broken.
7453 - Don't keep rephist info for routers that haven't had activity for
7454 24 hours. (This matters now that clients have keys, since we track
7456 - Never call close_temp_logs while validating log options.
7457 - Fix backslash-escaping on tor.sh.in and torctl.in.
7460 - Implement weekly/monthly/daily accounting: now you specify your
7461 hibernation properties by
7462 AccountingMax N bytes|KB|MB|GB|TB
7463 AccountingStart day|week|month [day] HH:MM
7464 Defaults to "month 1 0:00".
7465 - Let bandwidth and interval config options be specified as 5 bytes,
7466 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
7467 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
7468 get back to normal.)
7469 - If your requested entry or exit node has advertised bandwidth 0,
7471 - Be more greedy about filling up relay cells -- we try reading again
7472 once we've processed the stuff we read, in case enough has arrived
7473 to fill the last cell completely.
7474 - Apply NT service patch from Osamu Fujino. Still needs more work.
7477 Changes in version 0.0.9pre6 - 2004-11-15
7478 o Bugfixes on 0.0.8.1:
7479 - Fix assert failure on malformed socks4a requests.
7480 - Use identity comparison, not nickname comparison, to choose which
7481 half of circuit-ID-space each side gets to use. This is needed
7482 because sometimes we think of a router as a nickname, and sometimes
7483 as a hex ID, and we can't predict what the other side will do.
7484 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
7485 write() call will fail and we handle it there.
7486 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
7487 and smartlist_len, which are two major profiling offenders.
7489 o Bugfixes on 0.0.9pre5:
7490 - Fix a bug in read_all that was corrupting config files on windows.
7491 - When we're raising the max number of open file descriptors to
7492 'unlimited', don't log that we just raised it to '-1'.
7493 - Include event code with events, as required by control-spec.txt.
7494 - Don't give a fingerprint when clients do --list-fingerprint:
7495 it's misleading, because it will never be the same again.
7496 - Stop using strlcpy in tor_strndup, since it was slowing us
7498 - Remove warn on startup about missing cached-directory file.
7499 - Make kill -USR1 work again.
7500 - Hibernate if we start tor during the "wait for wakeup-time" phase
7501 of an accounting interval. Log our hibernation plans better.
7502 - Authoritative dirservers now also cache their directory, so they
7503 have it on start-up.
7506 - Fetch running-routers; cache running-routers; compress
7507 running-routers; serve compressed running-routers.z
7508 - Add NSI installer script contributed by J Doe.
7509 - Commit VC6 and VC7 workspace/project files.
7510 - Commit a tor.spec for making RPM files, with help from jbash.
7511 - Add contrib/torctl.in contributed by Glenn Fink.
7512 - Implement the control-spec's SAVECONF command, to write your
7513 configuration to torrc.
7514 - Get cookie authentication for the controller closer to working.
7515 - Include control-spec.txt in the tarball.
7516 - When set_conf changes our server descriptor, upload a new copy.
7517 But don't upload it too often if there are frequent changes.
7518 - Document authentication config in man page, and document signals
7520 - Clean up confusing parts of man page and torrc.sample.
7521 - Make expand_filename handle ~ and ~username.
7522 - Use autoconf to enable largefile support where necessary. Use
7523 ftello where available, since ftell can fail at 2GB.
7524 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
7525 log more informatively.
7526 - Give a slightly more useful output for "tor -h".
7527 - Refuse application socks connections to port 0.
7528 - Check clock skew for verified servers, but allow unverified
7529 servers and clients to have any clock skew.
7530 - Break DirFetchPostPeriod into:
7531 - DirFetchPeriod for fetching full directory,
7532 - StatusFetchPeriod for fetching running-routers,
7533 - DirPostPeriod for posting server descriptor,
7534 - RendPostPeriod for posting hidden service descriptors.
7535 - Make sure the hidden service descriptors are at a random offset
7536 from each other, to hinder linkability.
7539 Changes in version 0.0.9pre5 - 2004-11-09
7540 o Bugfixes on 0.0.9pre4:
7541 - Fix a seg fault in unit tests (doesn't affect main program).
7542 - Fix an assert bug where a hidden service provider would fail if
7543 the first hop of his rendezvous circuit was down.
7544 - Hidden service operators now correctly handle version 1 style
7545 INTRODUCE1 cells (nobody generates them still, so not a critical
7547 - If do_hup fails, actually notice.
7548 - Handle more errnos from accept() without closing the listener.
7549 Some OpenBSD machines were closing their listeners because
7550 they ran out of file descriptors.
7551 - Send resolve cells to exit routers that are running a new
7552 enough version of the resolve code to work right.
7553 - Better handling of winsock includes on non-MSV win32 compilers.
7554 - Some people had wrapped their tor client/server in a script
7555 that would restart it whenever it died. This did not play well
7556 with our "shut down if your version is obsolete" code. Now people
7557 don't fetch a new directory if their local cached version is
7559 - Make our autogen.sh work on ksh as well as bash.
7562 - Hibernation: New config option "AccountingMaxKB" lets you
7563 set how many KBytes per month you want to allow your server to
7564 consume. Rather than spreading those bytes out evenly over the
7565 month, we instead hibernate for some of the month and pop up
7566 at a deterministic time, work until the bytes are consumed, then
7567 hibernate again. Config option "MonthlyAccountingStart" lets you
7568 specify which day of the month your billing cycle starts on.
7569 - Control interface: a separate program can now talk to your
7570 client/server over a socket, and get/set config options, receive
7571 notifications of circuits and streams starting/finishing/dying,
7572 bandwidth used, etc. The next step is to get some GUIs working.
7573 Let us know if you want to help out. See doc/control-spec.txt .
7574 - Ship a contrib/tor-control.py as an example script to interact
7575 with the control port.
7576 - "tor --hash-password zzyxz" will output a salted password for
7577 use in authenticating to the control interface.
7578 - New log format in config:
7579 "Log minsev[-maxsev] stdout|stderr|syslog" or
7580 "Log minsev[-maxsev] file /var/foo"
7583 - DirPolicy config option, to let people reject incoming addresses
7584 from their dirserver.
7585 - "tor --list-fingerprint" will list your identity key fingerprint
7587 - Add "pass" target for RedirectExit, to make it easier to break
7588 out of a sequence of RedirectExit rules.
7589 - Clients now generate a TLS cert too, in preparation for having
7590 them act more like real nodes.
7591 - Ship src/win32/ in the tarball, so people can use it to build.
7592 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
7594 - New "router-status" line in directory, to better bind each verified
7595 nickname to its identity key.
7596 - Deprecate unofficial config option abbreviations, and abbreviations
7597 not on the command line.
7598 - Add a pure-C tor-resolve implementation.
7599 - Use getrlimit and friends to ensure we can reach MaxConn (currently
7600 1024) file descriptors.
7602 o Code security improvements, inspired by Ilja:
7603 - Replace sprintf with snprintf. (I think they were all safe, but
7605 - Replace strcpy/strncpy with strlcpy in more places.
7606 - Avoid strcat; use snprintf or strlcat instead.
7607 - snprintf wrapper with consistent (though not C99) overflow behavior.
7610 Changes in version 0.0.9pre4 - 2004-10-17
7611 o Bugfixes on 0.0.9pre3:
7612 - If the server doesn't specify an exit policy, use the real default
7613 exit policy, not reject *:*.
7614 - Ignore fascistfirewall when uploading/downloading hidden service
7615 descriptors, since we go through Tor for those; and when using
7616 an HttpProxy, since we assume it can reach them all.
7617 - When looking for an authoritative dirserver, use only the ones
7618 configured at boot. Don't bother looking in the directory.
7619 - The rest of the fix for get_default_conf_file() on older win32.
7620 - Make 'Routerfile' config option obsolete.
7623 - New 'MyFamily nick1,...' config option for a server to
7624 specify other servers that shouldn't be used in the same circuit
7625 with it. Only believed if nick1 also specifies us.
7626 - New 'NodeFamily nick1,nick2,...' config option for a client to
7627 specify nodes that it doesn't want to use in the same circuit.
7628 - New 'Redirectexit pattern address:port' config option for a
7629 server to redirect exit connections, e.g. to a local squid.
7632 Changes in version 0.0.9pre3 - 2004-10-13
7633 o Bugfixes on 0.0.8.1:
7634 - Better torrc example lines for dirbindaddress and orbindaddress.
7635 - Improved bounds checking on parsed ints (e.g. config options and
7636 the ones we find in directories.)
7637 - Better handling of size_t vs int, so we're more robust on 64
7639 - Fix the rest of the bug where a newly started OR would appear
7640 as unverified even after we've added his fingerprint and hupped
7642 - Fix a bug from 0.0.7: when read() failed on a stream, we would
7643 close it without sending back an end. So 'connection refused'
7644 would simply be ignored and the user would get no response.
7646 o Bugfixes on 0.0.9pre2:
7647 - Serving the cached-on-disk directory to people is bad. We now
7648 provide no directory until we've fetched a fresh one.
7649 - Workaround for bug on windows where cached-directories get crlf
7651 - Make get_default_conf_file() work on older windows too.
7652 - If we write a *:* exit policy line in the descriptor, don't write
7653 any more exit policy lines.
7656 - Use only 0.0.9pre1 and later servers for resolve cells.
7657 - Make the dirservers file obsolete.
7658 - Include a dir-signing-key token in directories to tell the
7659 parsing entity which key is being used to sign.
7660 - Remove the built-in bulky default dirservers string.
7661 - New config option "Dirserver %s:%d [fingerprint]", which can be
7662 repeated as many times as needed. If no dirservers specified,
7663 default to moria1,moria2,tor26.
7664 - Make moria2 advertise a dirport of 80, so people behind firewalls
7665 will be able to get a directory.
7666 - Http proxy support
7667 - Dirservers translate requests for http://%s:%d/x to /x
7668 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
7669 be routed through this host.
7670 - Clients ask for /tor/x rather than /x for new enough dirservers.
7671 This way we can one day coexist peacefully with apache.
7672 - Clients specify a "Host: %s%d" http header, to be compatible
7673 with more proxies, and so running squid on an exit node can work.
7676 Changes in version 0.0.8.1 - 2004-10-13
7678 - Fix a seg fault that can be triggered remotely for Tor
7679 clients/servers with an open dirport.
7680 - Fix a rare assert trigger, where routerinfos for entries in
7681 our cpath would expire while we're building the path.
7682 - Fix a bug in OutboundBindAddress so it (hopefully) works.
7683 - Fix a rare seg fault for people running hidden services on
7684 intermittent connections.
7685 - Fix a bug in parsing opt keywords with objects.
7686 - Fix a stale pointer assert bug when a stream detaches and
7688 - Fix a string format vulnerability (probably not exploitable)
7689 in reporting stats locally.
7690 - Fix an assert trigger: sometimes launching circuits can fail
7691 immediately, e.g. because too many circuits have failed recently.
7692 - Fix a compile warning on 64 bit platforms.
7695 Changes in version 0.0.9pre2 - 2004-10-03
7697 - Make fetching a cached directory work for 64-bit platforms too.
7698 - Make zlib.h a required header, not an optional header.
7701 Changes in version 0.0.9pre1 - 2004-10-01
7703 - Stop using separate defaults for no-config-file and
7704 empty-config-file. Now you have to explicitly turn off SocksPort,
7705 if you don't want it open.
7706 - Fix a bug in OutboundBindAddress so it (hopefully) works.
7707 - Improve man page to mention more of the 0.0.8 features.
7708 - Fix a rare seg fault for people running hidden services on
7709 intermittent connections.
7710 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
7712 - Fix more dns related bugs: send back resolve_failed and end cells
7713 more reliably when the resolve fails, rather than closing the
7714 circuit and then trying to send the cell. Also attach dummy resolve
7715 connections to a circuit *before* calling dns_resolve(), to fix
7716 a bug where cached answers would never be sent in RESOLVED cells.
7717 - When we run out of disk space, or other log writing error, don't
7718 crash. Just stop logging to that log and continue.
7719 - We were starting to daemonize before we opened our logs, so if
7720 there were any problems opening logs, we would complain to stderr,
7721 which wouldn't work, and then mysteriously exit.
7722 - Fix a rare bug where sometimes a verified OR would connect to us
7723 before he'd uploaded his descriptor, which would cause us to
7724 assign conn->nickname as though he's unverified. Now we look through
7725 the fingerprint list to see if he's there.
7726 - Fix a rare assert trigger, where routerinfos for entries in
7727 our cpath would expire while we're building the path.
7730 - Clients can ask dirservers for /dir.z to get a compressed version
7731 of the directory. Only works for servers running 0.0.9, of course.
7732 - Make clients cache directories and use them to seed their router
7733 lists at startup. This means clients have a datadir again.
7734 - Configuration infrastructure support for warning on obsolete
7736 - Respond to content-encoding headers by trying to uncompress as
7738 - Reply with a deflated directory when a client asks for "dir.z".
7739 We could use allow-encodings instead, but allow-encodings isn't
7740 specified in HTTP 1.0.
7741 - Raise the max dns workers from 50 to 100.
7742 - Discourage people from setting their dirfetchpostperiod more often
7743 than once per minute.
7744 - Protect dirservers from overzealous descriptor uploading -- wait
7745 10 seconds after directory gets dirty, before regenerating.
7748 Changes in version 0.0.8 - 2004-08-25
7749 o Port it to SunOS 5.9 / Athena
7752 Changes in version 0.0.8rc2 - 2004-08-20
7753 o Make it compile on cygwin again.
7754 o When picking unverified routers, skip those with low uptime and/or
7755 low bandwidth, depending on what properties you care about.
7758 Changes in version 0.0.8rc1 - 2004-08-18
7759 o Changes from 0.0.7.3:
7761 - Fix assert triggers: if the other side returns an address 0.0.0.0,
7762 don't put it into the client dns cache.
7763 - If a begin failed due to exit policy, but we believe the IP address
7764 should have been allowed, switch that router to exitpolicy reject *:*
7765 until we get our next directory.
7767 - Clients choose nodes proportional to advertised bandwidth.
7768 - Avoid using nodes with low uptime as introduction points.
7769 - Handle servers with dynamic IP addresses: don't replace
7770 options->Address with the resolved one at startup, and
7771 detect our address right before we make a routerinfo each time.
7772 - 'FascistFirewall' option to pick dirservers and ORs on specific
7773 ports; plus 'FirewallPorts' config option to tell FascistFirewall
7774 which ports are open. (Defaults to 80,443)
7775 - Be more aggressive about trying to make circuits when the network
7776 has changed (e.g. when you unsuspend your laptop).
7777 - Check for time skew on http headers; report date in response to
7779 - If the entrynode config line has only one node, don't pick it as
7781 - Add strict{entry|exit}nodes config options. If set to 1, then
7782 we refuse to build circuits that don't include the specified entry
7784 - OutboundBindAddress config option, to bind to a specific
7785 IP address for outgoing connect()s.
7786 - End truncated log entries (e.g. directories) with "[truncated]".
7788 o Patches to 0.0.8preX:
7790 - Patches to compile and run on win32 again (maybe)?
7791 - Fix crash when looking for ~/.torrc with no $HOME set.
7792 - Fix a race bug in the unit tests.
7793 - Handle verified/unverified name collisions better when new
7794 routerinfo's arrive in a directory.
7795 - Sometimes routers were getting entered into the stats before
7796 we'd assigned their identity_digest. Oops.
7797 - Only pick and establish intro points after we've gotten a
7800 - AllowUnverifiedNodes config option to let circuits choose no-name
7801 routers in entry,middle,exit,introduction,rendezvous positions.
7802 Allow middle and rendezvous positions by default.
7803 - Add a man page for tor-resolve.
7806 Changes in version 0.0.7.3 - 2004-08-12
7807 o Stop dnsworkers from triggering an assert failure when you
7808 ask them to resolve the host "".
7811 Changes in version 0.0.8pre3 - 2004-08-09
7812 o Changes from 0.0.7.2:
7813 - Allow multiple ORs with same nickname in routerlist -- now when
7814 people give us one identity key for a nickname, then later
7815 another, we don't constantly complain until the first expires.
7816 - Remember used bandwidth (both in and out), and publish 15-minute
7817 snapshots for the past day into our descriptor.
7818 - You can now fetch $DIRURL/running-routers to get just the
7819 running-routers line, not the whole descriptor list. (But
7820 clients don't use this yet.)
7821 - When people mistakenly use Tor as an http proxy, point them
7822 at the tor-doc.html rather than the INSTALL.
7823 - Remove our mostly unused -- and broken -- hex_encode()
7824 function. Use base16_encode() instead. (Thanks to Timo Lindfors
7825 for pointing out this bug.)
7826 - Rotate onion keys every 12 hours, not every 2 hours, so we have
7827 fewer problems with people using the wrong key.
7828 - Change the default exit policy to reject the default edonkey,
7829 kazaa, gnutella ports.
7830 - Add replace_file() to util.[ch] to handle win32's rename().
7832 o Changes from 0.0.8preX:
7833 - Fix two bugs in saving onion keys to disk when rotating, so
7834 hopefully we'll get fewer people using old onion keys.
7835 - Fix an assert error that was making SocksPolicy not work.
7836 - Be willing to expire routers that have an open dirport -- it's
7837 just the authoritative dirservers we want to not forget.
7838 - Reject tor-resolve requests for .onion addresses early, so we
7839 don't build a whole rendezvous circuit and then fail.
7840 - When you're warning a server that he's unverified, don't cry
7842 - Fix a race condition: don't try to extend onto a connection
7843 that's still handshaking.
7844 - For servers in clique mode, require the conn to be open before
7845 you'll choose it for your path.
7846 - Fix some cosmetic bugs about duplicate mark-for-close, lack of
7847 end relay cell, etc.
7848 - Measure bandwidth capacity over the last 24 hours, not just 12
7849 - Bugfix: authoritative dirservers were making and signing a new
7850 directory for each client, rather than reusing the cached one.
7853 Changes in version 0.0.8pre2 - 2004-08-04
7854 o Changes from 0.0.7.2:
7856 - Check directory signature _before_ you decide whether you're
7857 you're running an obsolete version and should exit.
7858 - Check directory signature _before_ you parse the running-routers
7859 list to decide who's running or verified.
7860 - Bugfixes and features:
7861 - Check return value of fclose while writing to disk, so we don't
7862 end up with broken files when servers run out of disk space.
7863 - Log a warning if the user uses an unsafe socks variant, so people
7864 are more likely to learn about privoxy or socat.
7865 - Dirservers now include RFC1123-style dates in the HTTP headers,
7866 which one day we will use to better detect clock skew.
7868 o Changes from 0.0.8pre1:
7869 - Make it compile without warnings again on win32.
7870 - Log a warning if you're running an unverified server, to let you
7871 know you might want to get it verified.
7872 - Only pick a default nickname if you plan to be a server.
7875 Changes in version 0.0.8pre1 - 2004-07-23
7877 - Made our unit tests compile again on OpenBSD 3.5, and tor
7878 itself compile again on OpenBSD on a sparc64.
7879 - We were neglecting milliseconds when logging on win32, so
7880 everything appeared to happen at the beginning of each second.
7883 - 'Extend' relay cell payloads now include the digest of the
7884 intended next hop's identity key. Now we can verify that we're
7885 extending to the right router, and also extend to routers we
7886 hadn't heard of before.
7889 - Tor nodes can now act as relays (with an advertised ORPort)
7890 without being manually verified by the dirserver operators.
7891 - Uploaded descriptors of unverified routers are now accepted
7892 by the dirservers, and included in the directory.
7893 - Verified routers are listed by nickname in the running-routers
7894 list; unverified routers are listed as "$<fingerprint>".
7895 - We now use hash-of-identity-key in most places rather than
7896 nickname or addr:port, for improved security/flexibility.
7897 - To avoid Sybil attacks, paths still use only verified servers.
7898 But now we have a chance to play around with hybrid approaches.
7899 - Nodes track bandwidth usage to estimate capacity (not used yet).
7900 - ClientOnly option for nodes that never want to become servers.
7901 - Directory caching.
7902 - "AuthoritativeDir 1" option for the official dirservers.
7903 - Now other nodes (clients and servers) will cache the latest
7904 directory they've pulled down.
7905 - They can enable their DirPort to serve it to others.
7906 - Clients will pull down a directory from any node with an open
7907 DirPort, and check the signature/timestamp correctly.
7908 - Authoritative dirservers now fetch directories from other
7909 authdirservers, to stay better synced.
7910 - Running-routers list tells who's down also, along with noting
7911 if they're verified (listed by nickname) or unverified (listed
7913 - Allow dirservers to serve running-router list separately.
7914 This isn't used yet.
7915 - ORs connect-on-demand to other ORs
7916 - If you get an extend cell to an OR you're not connected to,
7917 connect, handshake, and forward the create cell.
7918 - The authoritative dirservers stay connected to everybody,
7919 and everybody stays connected to 0.0.7 servers, but otherwise
7920 clients/servers expire unused connections after 5 minutes.
7921 - When servers get a sigint, they delay 30 seconds (refusing new
7922 connections) then exit. A second sigint causes immediate exit.
7923 - File and name management:
7924 - Look for .torrc if no CONFDIR "torrc" is found.
7925 - If no datadir is defined, then choose, make, and secure ~/.tor
7927 - If torrc not found, exitpolicy reject *:*.
7928 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
7929 - If no nickname is defined, derive default from hostname.
7930 - Rename secret key files, e.g. identity.key -> secret_id_key,
7931 to discourage people from mailing their identity key to tor-ops.
7932 - Refuse to build a circuit before the directory has arrived --
7933 it won't work anyway, since you won't know the right onion keys
7935 - Try other dirservers immediately if the one you try is down. This
7936 should tolerate down dirservers better now.
7937 - Parse tor version numbers so we can do an is-newer-than check
7938 rather than an is-in-the-list check.
7939 - New socks command 'resolve', to let us shim gethostbyname()
7941 - A 'tor_resolve' script to access the socks resolve functionality.
7942 - A new socks-extensions.txt doc file to describe our
7943 interpretation and extensions to the socks protocols.
7944 - Add a ContactInfo option, which gets published in descriptor.
7945 - Publish OR uptime in descriptor (and thus in directory) too.
7946 - Write tor version at the top of each log file
7947 - New docs in the tarball:
7949 - Document that you should proxy your SSL traffic too.
7952 Changes in version 0.0.7.2 - 2004-07-07
7953 o A better fix for the 0.0.0.0 problem, that will hopefully
7954 eliminate the remaining related assertion failures.
7957 Changes in version 0.0.7.1 - 2004-07-04
7958 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
7959 since internally we use 0.0.0.0 to signify "not yet resolved".
7962 Changes in version 0.0.7 - 2004-06-07
7963 o Updated the man page to reflect the new features.
7966 Changes in version 0.0.7rc2 - 2004-06-06
7967 o Changes from 0.0.7rc1:
7968 - Make it build on Win32 again.
7969 o Changes from 0.0.6.2:
7970 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
7974 Changes in version 0.0.7rc1 - 2004-06-02
7976 - On sighup, we were adding another log without removing the first
7977 one. So log messages would get duplicated n times for n sighups.
7978 - Several cases of using a connection after we'd freed it. The
7979 problem was that connections that are pending resolve are in both
7980 the pending_resolve tree, and also the circuit's resolving_streams
7981 list. When you want to remove one, you must remove it from both.
7982 - Fix a double-mark-for-close where an end cell arrived for a
7983 resolving stream, and then the resolve failed.
7984 - Check directory signatures based on name of signer, not on whom
7985 we got the directory from. This will let us cache directories more
7988 - Crank up some of our constants to handle more users.
7991 Changes in version 0.0.7pre1 - 2004-06-02
7992 o Fixes for crashes and other obnoxious bugs:
7993 - Fix an epipe bug: sometimes when directory connections failed
7994 to connect, we would give them a chance to flush before closing
7996 - When we detached from a circuit because of resolvefailed, we
7997 would immediately try the same circuit twice more, and then
7998 give up on the resolve thinking we'd tried three different
8000 - Limit the number of intro circuits we'll attempt to build for a
8001 hidden service per 15-minute period.
8002 - Check recommended-software string *early*, before actually parsing
8003 the directory. Thus we can detect an obsolete version and exit,
8004 even if the new directory format doesn't parse.
8005 o Fixes for security bugs:
8006 - Remember which nodes are dirservers when you startup, and if a
8007 random OR enables his dirport, don't automatically assume he's
8008 a trusted dirserver.
8010 - Directory connections were asking the wrong poll socket to
8011 start writing, and not asking themselves to start writing.
8012 - When we detached from a circuit because we sent a begin but
8013 didn't get a connected, we would use it again the first time;
8014 but after that we would correctly switch to a different one.
8015 - Stop warning when the first onion decrypt attempt fails; they
8016 will sometimes legitimately fail now that we rotate keys.
8017 - Override unaligned-access-ok check when $host_cpu is ia64 or
8018 arm. Apparently they allow it but the kernel whines.
8019 - Dirservers try to reconnect periodically too, in case connections
8021 - Fix some memory leaks in directory servers.
8022 - Allow backslash in Win32 filenames.
8023 - Made Tor build complain-free on FreeBSD, hopefully without
8024 breaking other BSD builds. We'll see.
8026 - Doxygen markup on all functions and global variables.
8027 - Make directory functions update routerlist, not replace it. So
8028 now directory disagreements are not so critical a problem.
8029 - Remove the upper limit on number of descriptors in a dirserver's
8030 directory (not that we were anywhere close).
8031 - Allow multiple logfiles at different severity ranges.
8032 - Allow *BindAddress to specify ":port" rather than setting *Port
8033 separately. Allow multiple instances of each BindAddress config
8034 option, so you can bind to multiple interfaces if you want.
8035 - Allow multiple exit policy lines, which are processed in order.
8036 Now we don't need that huge line with all the commas in it.
8037 - Enable accept/reject policies on SOCKS connections, so you can bind
8038 to 0.0.0.0 but still control who can use your OP.
8041 Changes in version 0.0.6.2 - 2004-05-16
8042 o Our integrity-checking digest was checking only the most recent cell,
8043 not the previous cells like we'd thought.
8044 Thanks to Stefan Mark for finding the flaw!
8047 Changes in version 0.0.6.1 - 2004-05-06
8048 o Fix two bugs in our AES counter-mode implementation (this affected
8049 onion-level stream encryption, but not TLS-level). It turns
8050 out we were doing something much more akin to a 16-character
8051 polyalphabetic cipher. Oops.
8052 Thanks to Stefan Mark for finding the flaw!
8053 o Retire moria3 as a directory server, and add tor26 as a directory
8057 Changes in version 0.0.6 - 2004-05-02
8061 Changes in version 0.0.6rc4 - 2004-05-01
8062 o Update the built-in dirservers list to use the new directory format
8063 o Fix a rare seg fault: if a node offering a hidden service attempts
8064 to build a circuit to Alice's rendezvous point and fails before it
8065 reaches the last hop, it retries with a different circuit, but
8067 o Handle windows socket errors correctly.
8070 Changes in version 0.0.6rc3 - 2004-04-28
8071 o Don't expire non-general excess circuits (if we had enough
8072 circuits open, we were expiring rendezvous circuits -- even
8073 when they had a stream attached. oops.)
8074 o Fetch randomness from /dev/urandom better (not via fopen/fread)
8075 o Better debugging for tls errors
8076 o Some versions of openssl have an SSL_pending function that erroneously
8077 returns bytes when there is a non-application record pending.
8078 o Set Content-Type on the directory and hidserv descriptor.
8079 o Remove IVs from cipher code, since AES-ctr has none.
8080 o Win32 fixes. Tor now compiles on win32 with no warnings/errors.
8081 o We were using an array of length zero in a few places.
8082 o win32's gethostbyname can't resolve an IP to an IP.
8083 o win32's close can't close a socket.
8086 Changes in version 0.0.6rc2 - 2004-04-26
8087 o Fix a bug where we were closing tls connections intermittently.
8088 It turns out openssl keeps its errors around -- so if an error
8089 happens, and you don't ask about it, and then another openssl
8090 operation happens and succeeds, and you ask if there was an error,
8091 it tells you about the first error. Fun fun.
8092 o Fix a bug that's been lurking since 27 may 03 (!)
8093 When passing back a destroy cell, we would use the wrong circ id.
8094 'Mostly harmless', but still worth fixing.
8095 o Since we don't support truncateds much, don't bother sending them;
8096 just close the circ.
8097 o check for <machine/limits.h> so we build on NetBSD again (I hope).
8098 o don't crash if a conn that sent a begin has suddenly lost its circuit
8099 (this was quite rare).
8102 Changes in version 0.0.6rc1 - 2004-04-25
8103 o We now rotate link (tls context) keys and onion keys.
8104 o CREATE cells now include oaep padding, so you can tell
8105 if you decrypted them correctly.
8106 o Add bandwidthburst to server descriptor.
8107 o Directories now say which dirserver signed them.
8108 o Use a tor_assert macro that logs failed assertions too.
8111 Changes in version 0.0.6pre5 - 2004-04-18
8112 o changes from 0.0.6pre4:
8113 - make tor build on broken freebsd 5.2 installs
8114 - fix a failed assert when you try an intro point, get a nack, and try
8115 a second one and it works.
8116 - when alice uses a port that the hidden service doesn't accept,
8117 it now sends back an end cell (denied by exit policy). otherwise
8118 alice would just have to wait to time out.
8119 - fix another rare bug: when we had tried all the intro
8120 points for a hidden service, we fetched the descriptor
8121 again, but we left our introcirc thinking it had already
8122 sent an intro, so it kept waiting for a response...
8123 - bugfix: when you sleep your hidden-service laptop, as soon
8124 as it wakes up it tries to upload a service descriptor, but
8125 socketpair fails for some reason (localhost not up yet?).
8126 now we simply give up on that upload, and we'll try again later.
8127 i'd still like to find the bug though.
8128 - if an intro circ waiting for an ack dies before getting one, then
8130 - we were reusing stale service descriptors and refetching usable
8134 Changes in version 0.0.6pre4 - 2004-04-14
8135 o changes from 0.0.6pre3:
8136 - when bob fails to connect to the rendezvous point, and his
8137 circ didn't fail because of the rendezvous point itself, then
8138 he retries a couple of times
8139 - we expire introduction and rendezvous circs more thoroughly
8140 (sometimes they were hanging around forever)
8141 - we expire unattached rendezvous streams that have been around
8142 too long (they were sticking around forever).
8143 - fix a measly fencepost error that was crashing everybody with
8147 Changes in version 0.0.6pre3 - 2004-04-14
8148 o changes from 0.0.6pre2:
8149 - make hup work again
8150 - fix some memory leaks for dirservers
8151 - allow more skew in rendezvous descriptor timestamps, to help
8152 handle people like blanu who don't know what time it is
8153 - normal circs are 3 hops, but some rend/intro circs are 4, if
8154 the initiator doesn't get to choose the last hop
8155 - send acks for introductions, so alice can know whether to try
8157 - bob publishes intro points more correctly
8158 o changes from 0.0.5:
8159 - fix an assert trigger that's been plaguing us since the days
8160 of 0.0.2prexx (thanks weasel!)
8161 - retry stream correctly when we fail to connect because of
8162 exit-policy-reject (should try another) or can't-resolve-address
8163 (also should try another, because dns on random internet servers
8165 - when we hup a dirserver and we've *removed* a server from the
8166 approved-routers list, now we remove that server from the
8167 in-memory directories too
8170 Changes in version 0.0.6pre2 - 2004-04-08
8171 o We fixed our base32 implementation. Now it works on all architectures.
8174 Changes in version 0.0.6pre1 - 2004-04-08
8176 - Hidden services and rendezvous points are implemented. Go to
8177 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
8178 hidden services. (This only works via a socks4a proxy such as
8179 Privoxy, and currently it's quite slow.)
8182 Changes in version 0.0.5 - 2004-03-30
8186 Changes in version 0.0.5rc3 - 2004-03-29
8187 o Install torrc as torrc.sample -- we no longer clobber your
8189 o Re-enable recommendedversion checking (we broke it in rc2, oops)
8190 o Add in a 'notice' log level for things the operator should hear
8191 but that aren't warnings
8194 Changes in version 0.0.5rc2 - 2004-03-29
8195 o Hold socks connection open until reply is flushed (if possible)
8196 o Make exit nodes resolve IPs to IPs immediately, rather than asking
8197 the dns farm to do it.
8198 o Fix c99 aliasing warnings in rephist.c
8199 o Don't include server descriptors that are older than 24 hours in the
8201 o Give socks 'reject' replies their whole 15s to attempt to flush,
8202 rather than seeing the 60s timeout and assuming the flush had failed.
8203 o Clean automake droppings from the cvs repository
8206 Changes in version 0.0.5rc1 - 2004-03-28
8207 o Fix mangled-state bug in directory fetching (was causing sigpipes).
8208 o Only build circuits after we've fetched the directory: clients were
8209 using only the directory servers before they'd fetched a directory.
8210 This also means longer startup time; so it goes.
8211 o Fix an assert trigger where an OP would fail to handshake, and we'd
8212 expect it to have a nickname.
8213 o Work around a tsocks bug: do a socks reject when AP connection dies
8214 early, else tsocks goes into an infinite loop.
8217 Changes in version 0.0.4 - 2004-03-26
8218 o When connecting to a dirserver or OR and the network is down,
8222 Changes in version 0.0.3 - 2004-03-26
8223 o Warn and fail if server chose a nickname with illegal characters
8224 o Port to Solaris and Sparc:
8225 - include missing header fcntl.h
8226 - have autoconf find -lsocket -lnsl automatically
8227 - deal with hardware word alignment
8228 - make uname() work (solaris has a different return convention)
8229 - switch from using signal() to sigaction()
8230 o Preliminary work on reputation system:
8231 - Keep statistics on success/fail of connect attempts; they're published
8232 by kill -USR1 currently.
8233 - Add a RunTesting option to try to learn link state by creating test
8234 circuits, even when SocksPort is off.
8235 - Remove unused open circuits when there are too many.
8238 Changes in version 0.0.2 - 2004-03-19
8239 - Include strlcpy and strlcat for safer string ops
8240 - define INADDR_NONE so we compile (but still not run) on solaris
8243 Changes in version 0.0.2pre27 - 2004-03-14
8245 - Allow internal tor networks (we were rejecting internal IPs,
8246 now we allow them if they're set explicitly).
8247 - And fix a few endian issues.
8250 Changes in version 0.0.2pre26 - 2004-03-14
8252 - If a stream times out after 15s without a connected cell, don't
8253 try that circuit again: try a new one.
8254 - Retry streams at most 4 times. Then give up.
8255 - When a dirserver gets a descriptor from an unknown router, it
8256 logs its fingerprint (so the dirserver operator can choose to
8257 accept it even without mail from the server operator).
8258 - Inform unapproved servers when we reject their descriptors.
8259 - Make tor build on Windows again. It works as a client, who knows
8261 - Clearer instructions in the torrc for how to set up a server.
8262 - Be more efficient about reading fd's when our global token bucket
8263 (used for rate limiting) becomes empty.
8265 - Stop asserting that computers always go forward in time. It's
8267 - When we sent a cell (e.g. destroy) and then marked an OR connection
8268 expired, we might close it before finishing a flush if the other
8269 side isn't reading right then.
8270 - Don't allow dirservers to start if they haven't defined
8272 - We were caching transient dns failures. Oops.
8273 - Prevent servers from publishing an internal IP as their address.
8274 - Address a strcat vulnerability in circuit.c
8277 Changes in version 0.0.2pre25 - 2004-03-04
8279 - Put the OR's IP in its router descriptor, not its fqdn. That way
8280 we'll stop being stalled by gethostbyname for nodes with flaky dns,
8283 - If the user typed in an address that didn't resolve, the server
8287 Changes in version 0.0.2pre24 - 2004-03-03
8289 - Fix an assertion failure in dns.c, where we were trying to dequeue
8290 a pending dns resolve even if it wasn't pending
8291 - Fix a spurious socks5 warning about still trying to write after the
8292 connection is finished.
8293 - Hold certain marked_for_close connections open until they're finished
8294 flushing, rather than losing bytes by closing them too early.
8295 - Correctly report the reason for ending a stream
8296 - Remove some duplicate calls to connection_mark_for_close
8297 - Put switch_id and start_daemon earlier in the boot sequence, so it
8298 will actually try to chdir() to options.DataDirectory
8299 - Make 'make test' exit(1) if a test fails; fix some unit tests
8300 - Make tor fail when you use a config option it doesn't know about,
8301 rather than warn and continue.
8302 - Make --version work
8303 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
8306 Changes in version 0.0.2pre23 - 2004-02-29
8308 - Print a statement when the first circ is finished, so the user
8310 - If a relay cell is unrecognized at the end of the circuit,
8311 send back a destroy. (So attacks to mutate cells are more
8313 - New config option 'excludenodes' to avoid certain nodes for circuits.
8314 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
8315 so you can collect coredumps there.
8317 - Fix a bug in tls flushing where sometimes data got wedged and
8318 didn't flush until more data got sent. Hopefully this bug was
8319 a big factor in the random delays we were seeing.
8320 - Make 'connected' cells include the resolved IP, so the client
8321 dns cache actually gets populated.
8322 - Disallow changing from ORPort=0 to ORPort>0 on hup.
8323 - When we time-out on a stream and detach from the circuit, send an
8324 end cell down it first.
8325 - Only warn about an unknown router (in exitnodes, entrynodes,
8326 excludenodes) after we've fetched a directory.
8329 Changes in version 0.0.2pre22 - 2004-02-26
8331 - Servers publish less revealing uname information in descriptors.
8332 - More memory tracking and assertions, to crash more usefully when
8334 - If the default torrc isn't there, just use some default defaults.
8335 Plus provide an internal dirservers file if they don't have one.
8336 - When the user tries to use Tor as an http proxy, give them an http
8337 501 failure explaining that we're a socks proxy.
8338 - Dump a new router.desc on hup, to help confused people who change
8339 their exit policies and then wonder why router.desc doesn't reflect
8341 - Clean up the generic tor.sh init script that we ship with.
8343 - If the exit stream is pending on the resolve, and a destroy arrives,
8344 then the stream wasn't getting removed from the pending list. I
8345 think this was the one causing recent server crashes.
8346 - Use a more robust poll on OSX 10.3, since their poll is flaky.
8347 - When it couldn't resolve any dirservers, it was useless from then on.
8348 Now it reloads the RouterFile (or default dirservers) if it has no
8350 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
8351 many users don't even *have* a /usr/local/sbin/.
8354 Changes in version 0.0.2pre21 - 2004-02-18
8356 - There's a ChangeLog file that actually reflects the changelog.
8357 - There's a 'torify' wrapper script, with an accompanying
8358 tor-tsocks.conf, that simplifies the process of using tsocks for
8359 tor. It even has a man page.
8360 - The tor binary gets installed to sbin rather than bin now.
8361 - Retry streams where the connected cell hasn't arrived in 15 seconds
8362 - Clean up exit policy handling -- get the default out of the torrc,
8363 so we can update it without forcing each server operator to fix
8365 - Allow imaps and pop3s in default exit policy
8367 - Prevent picking middleman nodes as the last node in the circuit
8370 Changes in version 0.0.2pre20 - 2004-01-30
8372 - We now have a deb package, and it's in debian unstable. Go to
8374 - I've split the TotalBandwidth option into BandwidthRate (how many
8375 bytes per second you want to allow, long-term) and
8376 BandwidthBurst (how many bytes you will allow at once before the cap
8377 kicks in). This better token bucket approach lets you, say, set
8378 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
8379 performance while not exceeding your monthly bandwidth quota.
8380 - Push out a tls record's worth of data once you've got it, rather
8381 than waiting until you've read everything waiting to be read. This
8382 may improve performance by pipelining better. We'll see.
8383 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
8384 from failed circuits (if they haven't been connected yet) and attach
8386 - Expire old streams that haven't managed to connect. Some day we'll
8387 have them reattach to new circuits instead.
8390 - Fix several memory leaks that were causing servers to become bloated
8392 - Fix a few very rare assert triggers. A few more remain.
8393 - Setuid to User _before_ complaining about running as root.
8396 Changes in version 0.0.2pre19 - 2004-01-07
8398 - Fix deadlock condition in dns farm. We were telling a child to die by
8399 closing the parent's file descriptor to him. But newer children were
8400 inheriting the open file descriptor from the parent, and since they
8401 weren't closing it, the socket never closed, so the child never read
8402 eof, so he never knew to exit. Similarly, dns workers were holding
8403 open other sockets, leading to all sorts of chaos.
8404 - New cleaner daemon() code for forking and backgrounding.
8405 - If you log to a file, it now prints an entry at the top of the
8406 logfile so you know it's working.
8407 - The onionskin challenge length was 30 bytes longer than necessary.
8408 - Started to patch up the spec so it's not quite so out of date.
8411 Changes in version 0.0.2pre18 - 2004-01-02
8413 - Fix endian issues with the 'integrity' field in the relay header.
8414 - Fix a potential bug where connections in state
8415 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
8418 Changes in version 0.0.2pre17 - 2003-12-30
8420 - Made --debuglogfile (or any second log file, actually) work.
8421 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
8422 adversary could force us into an infinite loop.
8425 - Each onionskin handshake now includes a hash of the computed key,
8426 to prove the server's identity and help perfect forward secrecy.
8427 - Changed cell size from 256 to 512 bytes (working toward compatibility
8429 - Changed cell length to 2 bytes, and moved it to the relay header.
8430 - Implemented end-to-end integrity checking for the payloads of
8432 - Separated streamid from 'recognized' (otherwise circuits will get
8433 messed up when we try to have streams exit from the middle). We
8434 use the integrity-checking to confirm that a cell is addressed to
8436 - Randomize the initial circid and streamid values, so an adversary who
8437 breaks into a node can't learn how many circuits or streams have
8441 Changes in version 0.0.2pre16 - 2003-12-14
8443 - Fixed a bug that made HUP trigger an assert
8444 - Fixed a bug where a circuit that immediately failed wasn't being
8445 counted as a failed circuit in counting retries.
8448 - Now we close the circuit when we get a truncated cell: otherwise we're
8449 open to an anonymity attack where a bad node in the path truncates
8450 the circuit and then we open streams at him.
8451 - Add port ranges to exit policies
8452 - Add a conservative default exit policy
8453 - Warn if you're running tor as root
8454 - on HUP, retry OR connections and close/rebind listeners
8455 - options.EntryNodes: try these nodes first when picking the first node
8456 - options.ExitNodes: if your best choices happen to include any of
8457 your preferred exit nodes, you choose among just those preferred
8459 - options.ExcludedNodes: nodes that are never picked in path building
8462 Changes in version 0.0.2pre15 - 2003-12-03
8463 o Robustness and bugfixes:
8464 - Sometimes clients would cache incorrect DNS resolves, which would
8465 really screw things up.
8466 - An OP that goes offline would slowly leak all its sockets and stop
8468 - A wide variety of bugfixes in exit node selection, exit policy
8469 handling, and processing pending streams when a new circuit is
8471 - Pick nodes for a path only from those the directory says are up
8472 - Choose randomly from all running dirservers, not always the first one
8473 - Increase allowed http header size for directory fetch.
8474 - Stop writing to stderr (if we're daemonized it will be closed).
8475 - Enable -g always, so cores will be more useful to me.
8476 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
8479 - Wrote a man page. It lists commonly used options.
8482 - Change default loglevel to warn.
8483 - Make PidFile default to null rather than littering in your CWD.
8484 - OnionRouter config option is now obsolete. Instead it just checks
8486 - Moved to a single unified torrc file for both clients and servers.
8489 Changes in version 0.0.2pre14 - 2003-11-29
8490 o Robustness and bugfixes:
8491 - Force the admin to make the DataDirectory himself
8492 - to get ownership/permissions right
8493 - so clients no longer make a DataDirectory and then never use it
8494 - fix bug where a client who was offline for 45 minutes would never
8495 pull down a directory again
8496 - fix (or at least hide really well) the dns assert bug that was
8497 causing server crashes
8498 - warnings and improved robustness wrt clockskew for certs
8499 - use the native daemon(3) to daemonize, when available
8500 - exit if bind() fails
8501 - exit if neither socksport nor orport is defined
8502 - include our own tor_timegm (Win32 doesn't have its own)
8503 - bugfix for win32 with lots of connections
8504 - fix minor bias in PRNG
8505 - make dirserver more robust to corrupt cached directory
8508 - Wrote the design document (woo)
8510 o Circuit building and exit policies:
8511 - Circuits no longer try to use nodes that the directory has told them
8513 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
8514 bitcounts (18.0.0.0/8).
8515 - Make AP connections standby for a circuit if no suitable circuit
8516 exists, rather than failing
8517 - Circuits choose exit node based on addr/port, exit policies, and
8518 which AP connections are standing by
8519 - Bump min pathlen from 2 to 3
8520 - Relay end cells have a payload to describe why the stream ended.
8521 - If the stream failed because of exit policy, try again with a new
8523 - Clients have a dns cache to remember resolved addresses.
8524 - Notice more quickly when we have no working circuits
8527 - APPort is now called SocksPort
8528 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
8530 - RecommendedVersions is now a config variable rather than
8531 hardcoded (for dirservers)
8532 - Reloads config on HUP
8533 - Usage info on -h or --help
8534 - If you set User and Group config vars, it'll setu/gid to them.
8537 Changes in version 0.0.2pre13 - 2003-10-19
8538 o General stability:
8539 - SSL_write no longer fails when it returns WANTWRITE and the number
8540 of bytes in the buf has changed by the next SSL_write call.
8541 - Fix segfault fetching directory when network is down
8542 - Fix a variety of minor memory leaks
8543 - Dirservers reload the fingerprints file on HUP, so I don't have
8544 to take down the network when I approve a new router
8545 - Default server config file has explicit Address line to specify fqdn
8548 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
8549 - Make listener connections not ever alloc bufs
8551 o Autoconf improvements:
8552 - don't clobber an external CFLAGS in ./configure
8553 - Make install now works
8554 - create var/lib/tor on make install
8555 - autocreate a tor.sh initscript to help distribs
8556 - autocreate the torrc and sample-server-torrc with correct paths
8558 o Log files and Daemonizing now work:
8559 - If --DebugLogFile is specified, log to it at -l debug
8560 - If --LogFile is specified, use it instead of commandline
8561 - If --RunAsDaemon is set, tor forks and backgrounds on startup