1 Changes in version 0.2.0.8-alpha - 2007-10-12
2 o Major features (directory authorities):
3 - When an authority is missing votes or signatures, it now tries to fetch
5 - Directory authorities track weighted fractional uptime as well as
6 weighted mean-time-between failures. WFU is suitable for deciding
7 whether a node is "usually up", while MTBF is suitable for deciding
8 whether a node is "likely to stay up." We need both, because "usually
9 up" is a good requirement for guards, while "likely to stay up" is
10 a good requirement for long-lived connections.
12 o Major features (v3 directory system):
13 - Caches now download v3 network status documents as needed.
14 - Caches now download descriptors listed in their v3 network status
16 - All hosts now attempt to download and keep fresh v3 authority
17 certificates, and re-attempt after failures.
19 o Minor features (router descriptor cache):
20 - Store routers in a file called cached-descriptors instead of in
21 cached-routers. Initialize cached-descriptors from cached-routers
22 if the old format is around. The new format allows us to store
23 annotations along with descriptors.
24 - Use annotations to record the time we received each descriptor.
25 - Use annotations to record the source for each descriptor.
26 - Use annotations to record the purpose of each descriptor.
28 o Minor features (v3 authority system):
29 - Add more ways for tools to download the votes that lead to the current
31 - Caches now download v3 network status documents as needed.
32 - Send a 503 when low on bandwidth and a vote, consensus, or certificate
35 o Minor features (network statuses):
36 - Tweak the implementation of proposal 109 slightly: allow at most
37 two Tor servers on the same IP address, except if it's the location
38 of a directory authority, in which case allow five.
40 o Major bugfixes (performance):
41 - Fix really bad O(n^2) performance when parsing a long list of routers:
42 Instead of searching the entire list for an "extra-info " string which
43 usually wasn't there, once for every routerinfo we read, just scan
44 lines forward until we find one we like. Bugfix on 0.2.0.1.
46 o Minor bugfixes (controller):
47 - When sending a status event to the controller telling it that an
48 OR address is readable, set the port correctly. (Previously we
49 were reporting the dir port.) Bugfix on 0.1.2.x.
51 o Minor bugfixes (v3 directory code):
52 - Fix logic to look up a cert by its signing key digest. Bugfix on
54 - Only change the reply to a vote to "OK" if it's not already set. This
55 gets rid of annoying "400 OK" log messages, which may have been masking
56 some deeper issue. Bugfix on 0.2.0.7-alpha.
57 - When we get a valid consensus, recompute the voting schedule.
58 - Base the valid-after time of a vote on the consensus voting schedule,
59 not on our preferred schedule.
60 - Make the return values and messages from signature uploads and downloads
62 - Fix a memory leak when serving votes and consensus documents, and
63 another when serving certificates.
65 o Minor bugfixes (performance):
66 - Use a slightly simpler string hashing algorithm (copying Python's
67 instead of Java's) and optimize our digest hashing algorithm to take
68 advantage of 64-bit platforms and to remove some possibly-costly
71 o Minor bugfixes (portability):
72 - On some platforms, accept() can return a broken address. Detect
73 this more quietly, and deal accordingly. (Fixes bug 483.)
75 o Minor bugfixes (DNS):
76 - It's not actually an error to find a non-pending entry in the DNS
77 cache when canceling a pending resolve. Don't log unless stuff
78 is fishy. Resolves bug 463.
80 o Minor bugfixes (Security):
81 - Never report that we've used more bandwidth than we're willing to
82 relay: it leaks how much non-relay traffic we're using. Resolves bug
85 o Code simplifications and refactoring:
86 - Make a bunch of functions static. Remove some dead code.
87 - Pull out about a third of the really big routerlist.c; put it in a
88 new module, networkstatus.c.
89 - Merge the extra fields in local_routerstatus_t back into
90 routerstatus_t: we used to need one routerstatus_t for each
91 authority's opinion, plus a local_routerstatus_t for the locally
92 computed consensus opinion. To save space, we put the locally
93 modified fields into local_routerstatus_t, and only the common stuff
94 into routerstatus_t. But once v3 directories are in use, clients and
95 caches will no longer need to hold authority opinions; thus, the
96 rationale for keeping the types separate is now gone.
97 - Make the code used to reschedule and reattempt downloads more uniform.
98 - Turn all 'Are we a directory?' logic into a call to dirserver_mode().
101 Changes in version 0.2.0.7-alpha - 2007-09-21
102 o New directory authorities:
103 - Set up moria1 and tor26 as the first v3 directory authorities. See
104 doc/spec/dir-spec.txt for details on the new directory design.
106 o Major bugfixes (crashes):
107 - Fix possible segfaults in functions called from
108 rend_process_relay_cell(). Bugfix on 0.1.2.x.
110 o Major bugfixes (bridges):
111 - Fix a bug that made servers send a "404 Not found" in response to
112 attempts to fetch their server descriptor. This caused Tor servers
113 to take many minutes to establish reachability for their DirPort,
114 and it totally crippled bridges. Bugfix on 0.2.0.5-alpha.
115 - Make "UpdateBridgesFromAuthority" torrc option work: when bridge
116 users configure that and specify a bridge with an identity
117 fingerprint, now they will lookup the bridge descriptor at the
118 default bridge authority via a one-hop tunnel, but once circuits
119 are established they will switch to a three-hop tunnel for later
120 connections to the bridge authority. Bugfix in 0.2.0.3-alpha.
122 o Major bugfixes (hidden services):
123 - Hidden services were choosing introduction points uniquely by
124 hexdigest, but when constructing the hidden service descriptor
125 they merely wrote the (potentially ambiguous) nickname.
126 - Clients now use the v2 intro format for hidden service
127 connections: they specify their chosen rendezvous point by identity
128 digest rather than by (potentially ambiguous) nickname. Both
129 are bugfixes on 0.1.2.x, and they could speed up hidden service
130 connections dramatically. Thanks to Karsten Loesing.
132 o Minor features (security):
133 - As a client, do not believe any server that tells us that an
134 address maps to an internal address space.
135 - Make it possible to enable HashedControlPassword and
136 CookieAuthentication at the same time.
138 o Minor features (guard nodes):
139 - Tag every guard node in our state file with the version that
140 we believe added it, or with our own version if we add it. This way,
141 if a user temporarily runs an old version of Tor and then switches
142 back to a new one, she doesn't automatically lose her guards.
144 o Minor features (speed):
145 - When implementing AES counter mode, update only the portions of the
146 counter buffer that need to change, and don't keep separate
147 network-order and host-order counters when they are the same (i.e.,
148 on big-endian hosts.)
150 o Minor features (controller):
151 - Accept LF instead of CRLF on controller, since some software has a
152 hard time generating real Internet newlines.
153 - Add GETINFO values for the server status events
154 "REACHABILITY_SUCCEEDED" and "GOOD_SERVER_DESCRIPTOR". Patch from
158 - Routers no longer include bandwidth-history lines in their
159 descriptors; this information is already available in extra-info
160 documents, and including it in router descriptors took up 60%
161 (!) of compressed router descriptor downloads. Completes
162 implementation of proposal 104.
163 - Remove the contrib scripts ExerciseServer.py, PathDemo.py,
164 and TorControl.py, as they use the old v0 controller protocol,
165 and are obsoleted by TorFlow anyway.
166 - Drop support for v1 rendezvous descriptors, since we never used
167 them anyway, and the code has probably rotted by now. Based on
168 patch from Karsten Loesing.
169 - On OSX, stop warning the user that kqueue support in libevent is
170 "experimental", since it seems to have worked fine for ages.
173 - When generating information telling us how to extend to a given
174 router, do not try to include the nickname if it is absent. Fixes
175 bug 467. Bugfix on 0.2.0.3-alpha.
176 - Fix a user-triggerable (but not remotely-triggerable) segfault
177 in expand_filename(). Bugfix on 0.1.2.x.
178 - Fix a memory leak when freeing incomplete requests from DNSPort.
179 Found by Niels Provos with valgrind. Bugfix on 0.2.0.1-alpha.
180 - Don't try to access (or alter) the state file when running
181 --list-fingerprint or --verify-config or --hash-password. (Resolves
182 bug 499.) Bugfix on 0.1.2.x.
183 - Servers used to decline to publish their DirPort if their
184 BandwidthRate, RelayBandwidthRate, or MaxAdvertisedBandwidth
185 were below a threshold. Now they only look at BandwidthRate and
186 RelayBandwidthRate. Bugfix on 0.1.2.x.
187 - Remove an optimization in the AES counter-mode code that assumed
188 that the counter never exceeded 2^68. When the counter can be set
189 arbitrarily as an IV (as it is by Karsten's new hidden services
190 code), this assumption no longer holds. Bugfix on 0.1.2.x.
191 - Resume listing "AUTHORITY" flag for authorities in network status.
192 Bugfix on 0.2.0.3-alpha; reported by Alex de Joode.
194 o Code simplifications and refactoring:
195 - Revamp file-writing logic so we don't need to have the entire
196 contents of a file in memory at once before we write to disk. Tor,
198 - Turn "descriptor store" into a full-fledged type.
199 - Move all NT services code into a separate source file.
200 - Unify all code that computes medians, percentile elements, etc.
201 - Get rid of a needless malloc when parsing address policies.
204 Changes in version 0.1.2.17 - 2007-08-30
205 o Major bugfixes (security):
206 - We removed support for the old (v0) control protocol. It has been
207 deprecated since Tor 0.1.1.1-alpha, and keeping it secure has
208 become more of a headache than it's worth.
210 o Major bugfixes (load balancing):
211 - When choosing nodes for non-guard positions, weight guards
212 proportionally less, since they already have enough load. Patch
214 - Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
215 will allow fast Tor servers to get more attention.
216 - When we're upgrading from an old Tor version, forget our current
217 guards and pick new ones according to the new weightings. These
218 three load balancing patches could raise effective network capacity
219 by a factor of four. Thanks to Mike Perry for measurements.
221 o Major bugfixes (stream expiration):
222 - Expire not-yet-successful application streams in all cases if
223 they've been around longer than SocksTimeout. Right now there are
224 some cases where the stream will live forever, demanding a new
225 circuit every 15 seconds. Fixes bug 454; reported by lodger.
227 o Minor features (controller):
228 - Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
229 is valid before any authentication has been received. It tells
230 a controller what kind of authentication is expected, and what
231 protocol is spoken. Implements proposal 119.
233 o Minor bugfixes (performance):
234 - Save on most routerlist_assert_ok() calls in routerlist.c, thus
235 greatly speeding up loading cached-routers from disk on startup.
236 - Disable sentinel-based debugging for buffer code: we squashed all
237 the bugs that this was supposed to detect a long time ago, and now
238 its only effect is to change our buffer sizes from nice powers of
239 two (which platform mallocs tend to like) to values slightly over
240 powers of two (which make some platform mallocs sad).
242 o Minor bugfixes (misc):
243 - If exit bandwidth ever exceeds one third of total bandwidth, then
244 use the correct formula to weight exit nodes when choosing paths.
245 Based on patch from Mike Perry.
246 - Choose perfectly fairly among routers when choosing by bandwidth and
247 weighting by fraction of bandwidth provided by exits. Previously, we
248 would choose with only approximate fairness, and correct ourselves
249 if we ran off the end of the list.
250 - If we require CookieAuthentication but we fail to write the
251 cookie file, we would warn but not exit, and end up in a state
252 where no controller could authenticate. Now we exit.
253 - If we require CookieAuthentication, stop generating a new cookie
254 every time we change any piece of our config.
255 - Refuse to start with certain directory authority keys, and
256 encourage people using them to stop.
257 - Terminate multi-line control events properly. Original patch
259 - Fix a minor memory leak when we fail to find enough suitable
260 servers to choose a circuit.
261 - Stop leaking part of the descriptor when we run into a particularly
262 unparseable piece of it.
265 Changes in version 0.2.0.6-alpha - 2007-08-26
266 o New directory authorities:
267 - Set up Tonga as the default bridge directory authority.
270 - Directory authorities now track servers by weighted
271 mean-times-between-failures. When we have 4 or more days of data,
272 use measured MTBF rather than declared uptime to decide whether
273 to call a router Stable. Implements proposal 108.
275 o Major bugfixes (load balancing):
276 - When choosing nodes for non-guard positions, weight guards
277 proportionally less, since they already have enough load. Patch
279 - Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
280 will allow fast Tor servers to get more attention.
281 - When we're upgrading from an old Tor version, forget our current
282 guards and pick new ones according to the new weightings. These
283 three load balancing patches could raise effective network capacity
284 by a factor of four. Thanks to Mike Perry for measurements.
286 o Major bugfixes (descriptor parsing):
287 - Handle unexpected whitespace better in malformed descriptors. Bug
288 found using Benedikt Boss's new Tor fuzzer! Bugfix on 0.2.0.x.
291 - There is now an ugly, temporary "desc/all-recent-extrainfo-hack"
292 GETINFO for Torstat to use until it can switch to using extrainfos.
293 - Optionally (if built with -DEXPORTMALLINFO) export the output
294 of mallinfo via http, as tor/mallinfo.txt. Only accessible
298 - Do not intermix bridge routers with controller-added
299 routers. (Bugfix on 0.2.0.x)
300 - Do not fail with an assert when accept() returns an unexpected
301 address family. Addresses but does not wholly fix bug 483. (Bugfix
303 - Let directory authorities startup even when they can't generate
304 a descriptor immediately, e.g. because they don't know their
306 - Stop putting the authentication cookie in a file called "0"
307 in your working directory if you don't specify anything for the
308 new CookieAuthFile option. Reported by Matt Edman.
309 - Make it possible to read the PROTOCOLINFO response in a way that
310 conforms to our control-spec. Reported by Matt Edman.
311 - Fix a minor memory leak when we fail to find enough suitable
312 servers to choose a circuit. Bugfix on 0.1.2.x.
313 - Stop leaking part of the descriptor when we run into a particularly
314 unparseable piece of it. Bugfix on 0.1.2.x.
315 - Unmap the extrainfo cache file on exit.
318 Changes in version 0.2.0.5-alpha - 2007-08-19
320 - Version 1 directories are no longer generated in full. Instead,
321 authorities generate and serve "stub" v1 directories that list
322 no servers. This will stop Tor versions 0.1.0.x and earlier from
323 working, but (for security reasons) nobody should be running those
326 o Major bugfixes (compilation, 0.2.0.x):
327 - Try to fix Win32 compilation again: improve checking for IPv6 types.
328 - Try to fix MSVC compilation: build correctly on platforms that do
329 not define s6_addr16 or s6_addr32.
330 - Fix compile on platforms without getaddrinfo: bug found by Li-Hui
333 o Major bugfixes (stream expiration):
334 - Expire not-yet-successful application streams in all cases if
335 they've been around longer than SocksTimeout. Right now there are
336 some cases where the stream will live forever, demanding a new
337 circuit every 15 seconds. Bugfix on 0.1.2.7-alpha; fixes bug 454;
340 o Minor features (directory servers):
341 - When somebody requests a list of statuses or servers, and we have
342 none of those, return a 404 rather than an empty 200.
344 o Minor features (directory voting):
345 - Store v3 consensus status consensuses on disk, and reload them
348 o Minor features (security):
349 - Warn about unsafe ControlPort configurations.
350 - Refuse to start with certain directory authority keys, and
351 encourage people using them to stop.
353 o Minor features (controller):
354 - Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
355 is valid before any authentication has been received. It tells
356 a controller what kind of authentication is expected, and what
357 protocol is spoken. Implements proposal 119.
358 - New config option CookieAuthFile to choose a new location for the
359 cookie authentication file, and config option
360 CookieAuthFileGroupReadable to make it group-readable.
362 o Minor features (unit testing):
363 - Add command-line arguments to unit-test executable so that we can
364 invoke any chosen test from the command line rather than having
365 to run the whole test suite at once; and so that we can turn on
366 logging for the unit tests.
368 o Minor bugfixes (on 0.1.2.x):
369 - If we require CookieAuthentication but we fail to write the
370 cookie file, we would warn but not exit, and end up in a state
371 where no controller could authenticate. Now we exit.
372 - If we require CookieAuthentication, stop generating a new cookie
373 every time we change any piece of our config.
374 - When loading bandwidth history, do not believe any information in
375 the future. Fixes bug 434.
376 - When loading entry guard information, do not believe any information
378 - When we have our clock set far in the future and generate an
379 onion key, then re-set our clock to be correct, we should not stop
380 the onion key from getting rotated.
381 - Clean up torrc sample config file.
382 - Do not automatically run configure from autogen.sh. This
383 non-standard behavior tended to annoy people who have built other
386 o Minor bugfixes (on 0.2.0.x):
387 - Fix a bug with AutomapHostsOnResolve that would always cause
388 the second request to fail. Bug reported by Kate. Bugfix on
390 - Fix a bug in ADDRMAP controller replies that would sometimes
391 try to print a NULL. Patch from tup.
392 - Read v3 directory authority keys from the right location.
393 - Numerous bugfixes to directory voting code.
396 Changes in version 0.1.2.16 - 2007-08-01
397 o Major security fixes:
398 - Close immediately after missing authentication on control port;
399 do not allow multiple authentication attempts.
402 Changes in version 0.2.0.4-alpha - 2007-08-01
403 o Major security fixes:
404 - Close immediately after missing authentication on control port;
405 do not allow multiple authentication attempts.
407 o Major bugfixes (compilation):
408 - Fix win32 compilation: apparently IN_ADDR and IN6_ADDR are already
411 o Minor features (performance):
412 - Be even more aggressive about releasing RAM from small
413 empty buffers. Thanks to our free-list code, this shouldn't be too
414 performance-intensive.
415 - Disable sentinel-based debugging for buffer code: we squashed all
416 the bugs that this was supposed to detect a long time ago, and
417 now its only effect is to change our buffer sizes from nice
418 powers of two (which platform mallocs tend to like) to values
419 siightly over powers of two (which make some platform mallocs sad).
420 - Log malloc statistics from mallinfo() on platforms where it
424 Changes in version 0.2.0.3-alpha - 2007-07-29
426 - The first pieces of our "bridge" design for blocking-resistance
427 are implemented. People can run bridge directory authorities;
428 people can run bridges; and people can configure their Tor clients
429 with a set of bridges to use as the first hop into the Tor network.
430 See http://archives.seul.org/or/talk/Jul-2007/msg00249.html for
432 - Create listener connections before we setuid to the configured
433 User and Group. Now non-Windows users can choose port values
434 under 1024, start Tor as root, and have Tor bind those ports
435 before it changes to another UID. (Windows users could already
437 - Added a new ConstrainedSockets config option to set SO_SNDBUF and
438 SO_RCVBUF on TCP sockets. Hopefully useful for Tor servers running
439 on "vserver" accounts. (Patch from coderman.)
440 - Be even more aggressive about separating local traffic from relayed
441 traffic when RelayBandwidthRate is set. (Refines proposal 111.)
443 o Major features (experimental):
444 - First cut of code for "v3 dir voting": directory authorities will
445 vote on a common network status document rather than each publishing
446 their own opinion. This code needs more testing and more corner-case
447 handling before it's ready for use.
450 - Directory authorities now call routers Fast if their bandwidth is
451 at least 100KB/s, and consider their bandwidth adequate to be a
452 Guard if it is at least 250KB/s, no matter the medians. This fix
453 complements proposal 107. [Bugfix on 0.1.2.x]
454 - Directory authorities now never mark more than 3 servers per IP as
455 Valid and Running. (Implements proposal 109, by Kevin Bauer and
457 - Minor change to organizationName and commonName generation
458 procedures in TLS certificates during Tor handshakes, to invalidate
459 some earlier censorware approaches. This is not a long-term
460 solution, but applying it will give us a bit of time to look into
461 the epidemiology of countermeasures as they spread.
463 o Major bugfixes (directory):
464 - Rewrite directory tokenization code to never run off the end of
465 a string. Fixes bug 455. Patch from croup. [Bugfix on 0.1.2.x]
467 o Minor features (controller):
468 - Add a SOURCE_ADDR field to STREAM NEW events so that controllers can
469 match requests to applications. (Patch from Robert Hogan.)
470 - Report address and port correctly on connections to DNSPort. (Patch
472 - Add a RESOLVE command to launch hostname lookups. (Original patch
474 - Add GETINFO status/enough-dir-info to let controllers tell whether
475 Tor has downloaded sufficient directory information. (Patch
477 - You can now use the ControlSocket option to tell Tor to listen for
478 controller connections on Unix domain sockets on systems that
479 support them. (Patch from Peter Palfrader.)
480 - STREAM NEW events are generated for DNSPort requests and for
481 tunneled directory connections. (Patch from Robert Hogan.)
482 - New "GETINFO address-mappings/*" command to get address mappings
483 with expiry information. "addr-mappings/*" is now deprecated.
486 o Minor features (misc):
487 - Merge in some (as-yet-unused) IPv6 address manipulation code. (Patch
489 - The tor-gencert tool for v3 directory authorities now creates all
490 files as readable to the file creator only, and write-protects
491 the authority identity key.
492 - When dumping memory usage, list bytes used in buffer memory
494 - When running with dmalloc, dump more stats on hup and on exit.
495 - Directory authorities now fail quickly and (relatively) harmlessly
496 if they generate a network status document that is somehow
499 o Traffic load balancing improvements:
500 - If exit bandwidth ever exceeds one third of total bandwidth, then
501 use the correct formula to weight exit nodes when choosing paths.
502 (Based on patch from Mike Perry.)
503 - Choose perfectly fairly among routers when choosing by bandwidth and
504 weighting by fraction of bandwidth provided by exits. Previously, we
505 would choose with only approximate fairness, and correct ourselves
506 if we ran off the end of the list. [Bugfix on 0.1.2.x]
508 o Performance improvements:
509 - Be more aggressive with freeing buffer RAM or putting it on the
511 - Use Critical Sections rather than Mutexes for synchronizing threads
512 on win32; Mutexes are heavier-weight, and designed for synchronizing
515 o Deprecated and removed features:
516 - RedirectExits is now deprecated.
517 - Stop allowing address masks that do not correspond to bit prefixes.
518 We have warned about these for a really long time; now it's time
519 to reject them. (Patch from croup.)
521 o Minor bugfixes (directory):
522 - Fix another crash bug related to extra-info caching. (Bug found by
523 Peter Palfrader.) [Bugfix on 0.2.0.2-alpha]
524 - Directories no longer return a "304 not modified" when they don't
525 have the networkstatus the client asked for. Also fix a memory
526 leak when returning 304 not modified. [Bugfixes on 0.2.0.2-alpha]
527 - We had accidentally labelled 0.1.2.x directory servers as not
528 suitable for begin_dir requests, and had labelled no directory
529 servers as suitable for uploading extra-info documents. [Bugfix
532 o Minor bugfixes (dns):
533 - Fix a crash when DNSPort is set more than once. (Patch from Robert
534 Hogan.) [Bugfix on 0.2.0.2-alpha]
535 - Add DNSPort connections to the global connection list, so that we
536 can time them out correctly. (Bug found by Robert Hogan.) [Bugfix
538 - Fix a dangling reference that could lead to a crash when DNSPort is
539 changed or closed (Patch from Robert Hogan.) [Bugfix on
542 o Minor bugfixes (controller):
543 - Provide DNS expiry times in GMT, not in local time. For backward
544 compatibility, ADDRMAP events only provide GMT expiry in an extended
545 field. "GETINFO address-mappings" always does the right thing.
546 - Use CRLF line endings properly in NS events.
547 - Terminate multi-line control events properly. (Original patch
548 from tup.) [Bugfix on 0.1.2.x-alpha]
549 - Do not include spaces in SOURCE_ADDR fields in STREAM
550 events. Resolves bug 472. [Bugfix on 0.2.0.x-alpha]
553 Changes in version 0.1.2.15 - 2007-07-17
554 o Major bugfixes (compilation):
555 - Fix compile on FreeBSD/NetBSD/OpenBSD. Oops.
557 o Major bugfixes (crashes):
558 - Try even harder not to dereference the first character after
559 an mmap(). Reported by lodger.
560 - Fix a crash bug in directory authorities when we re-number the
561 routerlist while inserting a new router.
562 - When the cached-routers file is an even multiple of the page size,
563 don't run off the end and crash. (Fixes bug 455; based on idea
565 - Fix eventdns.c behavior on Solaris: It is critical to include
566 orconfig.h _before_ sys/types.h, so that we can get the expected
567 definition of _FILE_OFFSET_BITS.
569 o Major bugfixes (security):
570 - Fix a possible buffer overrun when using BSD natd support. Bug
572 - When sending destroy cells from a circuit's origin, don't include
573 the reason for tearing down the circuit. The spec says we didn't,
574 and now we actually don't. Reported by lodger.
575 - Keep streamids from different exits on a circuit separate. This
576 bug may have allowed other routers on a given circuit to inject
577 cells into streams. Reported by lodger; fixes bug 446.
578 - If there's a never-before-connected-to guard node in our list,
579 never choose any guards past it. This way we don't expand our
580 guard list unless we need to.
582 o Minor bugfixes (guard nodes):
583 - Weight guard selection by bandwidth, so that low-bandwidth nodes
584 don't get overused as guards.
586 o Minor bugfixes (directory):
587 - Correctly count the number of authorities that recommend each
588 version. Previously, we were under-counting by 1.
589 - Fix a potential crash bug when we load many server descriptors at
590 once and some of them make others of them obsolete. Fixes bug 458.
592 o Minor bugfixes (hidden services):
593 - Stop tearing down the whole circuit when the user asks for a
594 connection to a port that the hidden service didn't configure.
597 o Minor bugfixes (misc):
598 - On Windows, we were preventing other processes from reading
599 cached-routers while Tor was running. Reported by janbar.
600 - Fix a possible (but very unlikely) bug in picking routers by
601 bandwidth. Add a log message to confirm that it is in fact
602 unlikely. Patch from lodger.
603 - Backport a couple of memory leak fixes.
604 - Backport miscellaneous cosmetic bugfixes.
607 Changes in version 0.2.0.2-alpha - 2007-06-02
608 o Major bugfixes on 0.2.0.1-alpha:
609 - Fix an assertion failure related to servers without extra-info digests.
610 Resolves bugs 441 and 442.
612 o Minor features (directory):
613 - Support "If-Modified-Since" when answering HTTP requests for
614 directories, running-routers documents, and network-status documents.
615 (There's no need to support it for router descriptors, since those
616 are downloaded by descriptor digest.)
618 o Minor build issues:
619 - Clear up some MIPSPro compiler warnings.
620 - When building from a tarball on a machine that happens to have SVK
621 installed, report the micro-revision as whatever version existed
622 in the tarball, not as "x".
625 Changes in version 0.2.0.1-alpha - 2007-06-01
626 o Major features, server usability:
627 - New config options RelayBandwidthRate and RelayBandwidthBurst:
628 a separate set of token buckets for relayed traffic. Right now
629 relayed traffic is defined as answers to directory requests, and
630 OR connections that don't have any local circuits on them.
632 o Major features, client usability:
633 - A client-side DNS proxy feature to replace the need for
634 dns-proxy-tor: Just set "DNSPort 9999", and Tor will now listen
635 for DNS requests on port 9999, use the Tor network to resolve them
636 anonymously, and send the reply back like a regular DNS server.
637 The code still only implements a subset of DNS.
638 - Make PreferTunneledDirConns and TunnelDirConns work even when
639 we have no cached directory info. This means Tor clients can now
640 do all of their connections protected by TLS.
642 o Major features, performance and efficiency:
643 - Directory authorities accept and serve "extra info" documents for
644 routers. These documents contain fields from router descriptors
645 that aren't usually needed, and that use a lot of excess
646 bandwidth. Once these fields are removed from router descriptors,
647 the bandwidth savings should be about 60%. [Partially implements
649 - Servers upload extra-info documents to any authority that accepts
650 them. Authorities (and caches that have been configured to download
651 extra-info documents) download them as needed. [Partially implements
653 - Change the way that Tor buffers data that it is waiting to write.
654 Instead of queueing data cells in an enormous ring buffer for each
655 client->OR or OR->OR connection, we now queue cells on a separate
656 queue for each circuit. This lets us use less slack memory, and
657 will eventually let us be smarter about prioritizing different kinds
659 - Use memory pools to allocate cells with better speed and memory
660 efficiency, especially on platforms where malloc() is inefficient.
661 - Stop reading on edge connections when their corresponding circuit
662 buffers are full; start again as the circuits empty out.
664 o Major features, other:
665 - Add an HSAuthorityRecordStats option that hidden service authorities
666 can use to track statistics of overall hidden service usage without
667 logging information that would be very useful to an attacker.
668 - Start work implementing multi-level keys for directory authorities:
669 Add a standalone tool to generate key certificates. (Proposal 103.)
672 - Directory authorities now call routers Stable if they have an
673 uptime of at least 30 days, even if that's not the median uptime
674 in the network. Implements proposal 107, suggested by Kevin Bauer
677 o Minor fixes (resource management):
678 - Count the number of open sockets separately from the number
679 of active connection_t objects. This will let us avoid underusing
680 our allocated connection limit.
681 - We no longer use socket pairs to link an edge connection to an
682 anonymous directory connection or a DirPort test connection.
683 Instead, we track the link internally and transfer the data
684 in-process. This saves two sockets per "linked" connection (at the
685 client and at the server), and avoids the nasty Windows socketpair()
687 - Keep unused 4k and 16k buffers on free lists, rather than wasting 8k
688 for every single inactive connection_t. Free items from the
689 4k/16k-buffer free lists when they haven't been used for a while.
691 o Minor features (build):
692 - Make autoconf search for libevent, openssl, and zlib consistently.
693 - Update deprecated macros in configure.in.
694 - When warning about missing headers, tell the user to let us
695 know if the compile succeeds anyway, so we can downgrade the
697 - Include the current subversion revision as part of the version
698 string: either fetch it directly if we're in an SVN checkout, do
699 some magic to guess it if we're in an SVK checkout, or use
700 the last-detected version if we're building from a .tar.gz.
701 Use this version consistently in log messages.
703 o Minor features (logging):
704 - Always prepend "Bug: " to any log message about a bug.
705 - Put a platform string (e.g. "Linux i686") in the startup log
706 message, so when people paste just their logs, we know if it's
707 OpenBSD or Windows or what.
708 - When logging memory usage, break down memory used in buffers by
711 o Minor features (directory system):
712 - New config option V2AuthoritativeDirectory that all directory
713 authorities should set. This will let future authorities choose
714 not to serve V2 directory information.
715 - Directory authorities allow multiple router descriptors and/or extra
716 info documents to be uploaded in a single go. This will make
717 implementing proposal 104 simpler.
719 o Minor features (controller):
720 - Add a new config option __DisablePredictedCircuits designed for
721 use by the controller, when we don't want Tor to build any circuits
723 - Let the controller specify HOP=%d as an argument to ATTACHSTREAM,
724 so we can exit from the middle of the circuit.
725 - Implement "getinfo status/circuit-established".
726 - Implement "getinfo status/version/..." so a controller can tell
727 whether the current version is recommended, and whether any versions
728 are good, and how many authorities agree. (Patch from shibz.)
730 o Minor features (hidden services):
731 - Allow multiple HiddenServicePort directives with the same virtual
732 port; when they occur, the user is sent round-robin to one
733 of the target ports chosen at random. Partially fixes bug 393 by
734 adding limited ad-hoc round-robining.
736 o Minor features (other):
738 - Add a new AutomapHostsOnResolve option: when it is enabled, any
739 resolve request for hosts matching a given pattern causes Tor to
740 generate an internal virtual address mapping for that host. This
741 allows DNSPort to work sensibly with hidden service users. By
742 default, .exit and .onion addresses are remapped; the list of
743 patterns can be reconfigured with AutomapHostsSuffixes.
744 - Add an "-F" option to tor-resolve to force a resolve for a .onion
745 address. Thanks to the AutomapHostsOnResolve option, this is no
746 longer a completely silly thing to do.
747 - If Tor is invoked from something that isn't a shell (e.g. Vidalia),
748 now we expand "-f ~/.tor/torrc" correctly. Suggested by Matt Edman.
749 - Treat "2gb" when given in torrc for a bandwidth as meaning 2gb,
750 minus 1 byte: the actual maximum declared bandwidth.
753 - Removed support for the old binary "version 0" controller protocol.
754 This has been deprecated since 0.1.1, and warnings have been issued
755 since 0.1.2. When we encounter a v0 control message, we now send
756 back an error and close the connection.
757 - Remove the old "dns worker" server DNS code: it hasn't been default
758 since 0.1.2.2-alpha, and all the servers seem to be using the new
761 o Minor bugfixes (portability):
762 - Even though Windows is equally happy with / and \ as path separators,
763 try to use \ consistently on Windows and / consistently on Unix: it
764 makes the log messages nicer.
765 - Correctly report platform name on Windows 95 OSR2 and Windows 98 SE.
766 - Read resolv.conf files correctly on platforms where read() returns
767 partial results on small file reads.
769 o Minor bugfixes (directory):
770 - Correctly enforce that elements of directory objects do not appear
771 more often than they are allowed to appear.
772 - When we are reporting the DirServer line we just parsed, we were
773 logging the second stanza of the key fingerprint, not the first.
775 o Minor bugfixes (logging):
776 - When we hit an EOF on a log (probably because we're shutting down),
777 don't try to remove the log from the list: just mark it as
778 unusable. (Bulletproofs against bug 222.)
780 o Minor bugfixes (other):
781 - In the exitlist script, only consider the most recently published
782 server descriptor for each server. Also, when the user requests
783 a list of servers that _reject_ connections to a given address,
784 explicitly exclude the IPs that also have servers that accept
785 connections to that address. (Resolves bug 405.)
786 - Stop allowing hibernating servers to be "stable" or "fast".
787 - On Windows, we were preventing other processes from reading
788 cached-routers while Tor was running. (Reported by janbar)
789 - Make the NodeFamilies config option work. (Reported by
790 lodger -- it has never actually worked, even though we added it
792 - Check return values from pthread_mutex functions.
793 - Don't save non-general-purpose router descriptors to the disk cache,
794 because we have no way of remembering what their purpose was when
796 - Add even more asserts to hunt down bug 417.
797 - Build without verbose warnings even on (not-yet-released) gcc 4.2.
798 - Fix a possible (but very unlikely) bug in picking routers by bandwidth.
799 Add a log message to confirm that it is in fact unlikely.
801 o Minor bugfixes (controller):
802 - Make 'getinfo fingerprint' return a 551 error if we're not a
803 server, so we match what the control spec claims we do. Reported
805 - Fix a typo in an error message when extendcircuit fails that
806 caused us to not follow the \r\n-based delimiter protocol. Reported
809 o Code simplifications and refactoring:
810 - Stop passing around circuit_t and crypt_path_t pointers that are
811 implicit in other procedure arguments.
812 - Drop the old code to choke directory connections when the
813 corresponding OR connections got full: thanks to the cell queue
814 feature, OR conns don't get full any more.
815 - Make dns_resolve() handle attaching connections to circuits
816 properly, so the caller doesn't have to.
817 - Rename wants_to_read and wants_to_write to read/write_blocked_on_bw.
818 - Keep the connection array as a dynamic smartlist_t, rather than as
819 a fixed-sized array. This is important, as the number of connections
820 is becoming increasingly decoupled from the number of sockets.
823 Changes in version 0.1.2.14 - 2007-05-25
824 o Directory authority changes:
825 - Two directory authorities (moria1 and moria2) just moved to new
826 IP addresses. This change will particularly affect those who serve
827 or use hidden services.
829 o Major bugfixes (crashes):
830 - If a directory server runs out of space in the connection table
831 as it's processing a begin_dir request, it will free the exit stream
832 but leave it attached to the circuit, leading to unpredictable
833 behavior. (Reported by seeess, fixes bug 425.)
834 - Fix a bug in dirserv_remove_invalid() that would cause authorities
835 to corrupt memory under some really unlikely scenarios.
836 - Tighten router parsing rules. (Bugs reported by Benedikt Boss.)
837 - Avoid segfaults when reading from mmaped descriptor file. (Reported
840 o Major bugfixes (security):
841 - When choosing an entry guard for a circuit, avoid using guards
842 that are in the same family as the chosen exit -- not just guards
843 that are exactly the chosen exit. (Reported by lodger.)
845 o Major bugfixes (resource management):
846 - If a directory authority is down, skip it when deciding where to get
847 networkstatus objects or descriptors. Otherwise we keep asking
848 every 10 seconds forever. Fixes bug 384.
849 - Count it as a failure if we fetch a valid network-status but we
850 don't want to keep it. Otherwise we'll keep fetching it and keep
851 not wanting to keep it. Fixes part of bug 422.
852 - If all of our dirservers have given us bad or no networkstatuses
853 lately, then stop hammering them once per minute even when we
854 think they're failed. Fixes another part of bug 422.
857 - Actually set the purpose correctly for descriptors inserted with
859 - When we have k non-v2 authorities in our DirServer config,
860 we ignored the last k authorities in the list when updating our
862 - Correctly back-off from requesting router descriptors that we are
863 having a hard time downloading.
864 - Read resolv.conf files correctly on platforms where read() returns
865 partial results on small file reads.
866 - Don't rebuild the entire router store every time we get 32K of
867 routers: rebuild it when the journal gets very large, or when
868 the gaps in the store get very large.
871 - When routers publish SVN revisions in their router descriptors,
872 authorities now include those versions correctly in networkstatus
874 - Warn when using a version of libevent before 1.3b to run a server on
875 OSX or BSD: these versions interact badly with userspace threads.
878 Changes in version 0.1.2.13 - 2007-04-24
880 - Fix a memory leak when we ask for "all" networkstatuses and we
881 get one we don't recognize.
882 - Add more asserts to hunt down bug 417.
883 - Disable kqueue on OS X 10.3 and earlier, to fix bug 371.
886 Changes in version 0.1.2.12-rc - 2007-03-16
888 - Fix an infinite loop introduced in 0.1.2.7-alpha when we serve
889 directory information requested inside Tor connections (i.e. via
890 begin_dir cells). It only triggered when the same connection was
891 serving other data at the same time. Reported by seeess.
894 - When creating a circuit via the controller, send a 'launched'
895 event when we're done, so we follow the spec better.
898 Changes in version 0.1.2.11-rc - 2007-03-15
899 o Minor bugfixes (controller), reported by daejees:
900 - Correct the control spec to match how the code actually responds
901 to 'getinfo addr-mappings/*'.
902 - The control spec described a GUARDS event, but the code
903 implemented a GUARD event. Standardize on GUARD, but let people
907 Changes in version 0.1.2.10-rc - 2007-03-07
908 o Major bugfixes (Windows):
909 - Do not load the NT services library functions (which may not exist)
910 just to detect if we're a service trying to shut down. Now we run
911 on Win98 and friends again.
913 o Minor bugfixes (other):
914 - Clarify a couple of log messages.
915 - Fix a misleading socks5 error number.
918 Changes in version 0.1.2.9-rc - 2007-03-02
919 o Major bugfixes (Windows):
920 - On MinGW, use "%I64u" to printf/scanf 64-bit integers, instead
921 of the usual GCC "%llu". This prevents a bug when saving 64-bit
922 int configuration values: the high-order 32 bits would get
923 truncated. In particular, we were being bitten by the default
924 MaxAdvertisedBandwidth of 128 TB turning into 0. (Fixes bug 400
925 and maybe also bug 397.)
927 o Minor bugfixes (performance):
928 - Use OpenSSL's AES implementation on platforms where it's faster.
929 This could save us as much as 10% CPU usage.
931 o Minor bugfixes (server):
932 - Do not rotate onion key immediately after setting it for the first
935 o Minor bugfixes (directory authorities):
936 - Stop calling servers that have been hibernating for a long time
937 "stable". Also, stop letting hibernating or obsolete servers affect
938 uptime and bandwidth cutoffs.
939 - Stop listing hibernating servers in the v1 directory.
941 o Minor bugfixes (hidden services):
942 - Upload hidden service descriptors slightly less often, to reduce
945 o Minor bugfixes (other):
946 - Fix an assert that could trigger if a controller quickly set then
947 cleared EntryNodes. (Bug found by Udo van den Heuvel.)
948 - On architectures where sizeof(int)>4, still clamp declarable bandwidth
950 - Fix a potential race condition in the rpm installer. Found by
952 - Try to fix eventdns warnings once and for all: do not treat a dns rcode
953 of 2 as indicating that the server is completely bad; it sometimes
954 means that the server is just bad for the request in question. (may fix
955 the last of bug 326.)
956 - Disable encrypted directory connections when we don't have a server
957 descriptor for the destination. We'll get this working again in
961 Changes in version 0.1.2.8-beta - 2007-02-26
962 o Major bugfixes (crashes):
963 - Stop crashing when the controller asks us to resetconf more than
964 one config option at once. (Vidalia 0.0.11 does this.)
965 - Fix a crash that happened on Win98 when we're given command-line
966 arguments: don't try to load NT service functions from advapi32.dll
967 except when we need them. (Bug introduced in 0.1.2.7-alpha;
969 - Fix a longstanding obscure crash bug that could occur when
970 we run out of DNS worker processes. (Resolves bug 390.)
972 o Major bugfixes (hidden services):
973 - Correctly detect whether hidden service descriptor downloads are
974 in-progress. (Suggested by Karsten Loesing; fixes bug 399.)
976 o Major bugfixes (accounting):
977 - When we start during an accounting interval before it's time to wake
978 up, remember to wake up at the correct time. (May fix bug 342.)
980 o Minor bugfixes (controller):
981 - Give the controller END_STREAM_REASON_DESTROY events _before_ we
982 clear the corresponding on_circuit variable, and remember later
983 that we don't need to send a redundant CLOSED event. (Resolves part
985 - Report events where a resolve succeeded or where we got a socks
986 protocol error correctly, rather than calling both of them
988 - Change reported stream target addresses to IP consistently when
989 we finally get the IP from an exit node.
990 - Send log messages to the controller even if they happen to be very
993 o Minor bugfixes (other):
994 - Display correct results when reporting which versions are
995 recommended, and how recommended they are. (Resolves bug 383.)
996 - Improve our estimates for directory bandwidth to be less random:
997 guess that an unrecognized directory will have the average bandwidth
998 from all known directories, not that it will have the average
999 bandwidth from those directories earlier than it on the list.
1000 - If we start a server with ClientOnly 1, then set ClientOnly to 0
1001 and hup, stop triggering an assert based on an empty onion_key.
1002 - On platforms with no working mmap() equivalent, don't warn the
1003 user when cached-routers doesn't exist.
1004 - Warn the user when mmap() [or its equivalent] fails for some reason
1005 other than file-not-found.
1006 - Don't warn the user when cached-routers.new doesn't exist: that's
1007 perfectly fine when starting up for the first time.
1008 - When EntryNodes are configured, rebuild the guard list to contain,
1009 in order: the EntryNodes that were guards before; the rest of the
1010 EntryNodes; the nodes that were guards before.
1011 - Mask out all signals in sub-threads; only the libevent signal
1012 handler should be processing them. This should prevent some crashes
1013 on some machines using pthreads. (Patch from coderman.)
1014 - Fix switched arguments on memset in the implementation of
1015 tor_munmap() for systems with no mmap() call.
1016 - When Tor receives a router descriptor that it asked for, but
1017 no longer wants (because it has received fresh networkstatuses
1018 in the meantime), do not warn the user. Cache the descriptor if
1019 we're a cache; drop it if we aren't.
1020 - Make earlier entry guards _really_ get retried when the network
1022 - On a malformed DNS reply, always give an error to the corresponding
1024 - Build with recent libevents on platforms that do not define the
1025 nonstandard types "u_int8_t" and friends.
1027 o Minor features (controller):
1028 - Warn the user when an application uses the obsolete binary v0
1029 control protocol. We're planning to remove support for it during
1030 the next development series, so it's good to give people some
1032 - Add STREAM_BW events to report per-entry-stream bandwidth
1033 use. (Patch from Robert Hogan.)
1034 - Rate-limit SIGNEWNYM signals in response to controllers that
1035 impolitely generate them for every single stream. (Patch from
1036 mwenge; closes bug 394.)
1037 - Make REMAP stream events have a SOURCE (cache or exit), and
1038 make them generated in every case where we get a successful
1039 connected or resolved cell.
1041 o Minor bugfixes (performance):
1042 - Call router_have_min_dir_info half as often. (This is showing up in
1043 some profiles, but not others.)
1044 - When using GCC, make log_debug never get called at all, and its
1045 arguments never get evaluated, when no debug logs are configured.
1046 (This is showing up in some profiles, but not others.)
1049 - Remove some never-implemented options. Mark PathlenCoinWeight as
1051 - Implement proposal 106: Stop requiring clients to have well-formed
1052 certificates; stop checking nicknames in certificates. (Clients
1053 have certificates so that they can look like Tor servers, but in
1054 the future we might want to allow them to look like regular TLS
1055 clients instead. Nicknames in certificates serve no purpose other
1056 than making our protocol easier to recognize on the wire.)
1057 - Revise messages on handshake failure again to be even more clear about
1058 which are incoming connections and which are outgoing.
1059 - Discard any v1 directory info that's over 1 month old (for
1060 directories) or over 1 week old (for running-routers lists).
1061 - Do not warn when individual nodes in the configuration's EntryNodes,
1062 ExitNodes, etc are down: warn only when all possible nodes
1063 are down. (Fixes bug 348.)
1064 - Always remove expired routers and networkstatus docs before checking
1065 whether we have enough information to build circuits. (Fixes
1067 - Put a lower-bound on MaxAdvertisedBandwidth.
1070 Changes in version 0.1.2.7-alpha - 2007-02-06
1071 o Major bugfixes (rate limiting):
1072 - Servers decline directory requests much more aggressively when
1073 they're low on bandwidth. Otherwise they end up queueing more and
1074 more directory responses, which can't be good for latency.
1075 - But never refuse directory requests from local addresses.
1076 - Fix a memory leak when sending a 503 response for a networkstatus
1078 - Be willing to read or write on local connections (e.g. controller
1079 connections) even when the global rate limiting buckets are empty.
1080 - If our system clock jumps back in time, don't publish a negative
1081 uptime in the descriptor. Also, don't let the global rate limiting
1082 buckets go absurdly negative.
1083 - Flush local controller connection buffers periodically as we're
1084 writing to them, so we avoid queueing 4+ megabytes of data before
1087 o Major bugfixes (NT services):
1088 - Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
1089 command-line flag so that admins can override the default by saying
1090 "tor --service install --user "SomeUser"". This will not affect
1091 existing installed services. Also, warn the user that the service
1092 will look for its configuration file in the service user's
1093 %appdata% directory. (We can't do the 'hardwire the user's appdata
1094 directory' trick any more, since we may not have read access to that
1097 o Major bugfixes (other):
1098 - Previously, we would cache up to 16 old networkstatus documents
1099 indefinitely, if they came from nontrusted authorities. Now we
1100 discard them if they are more than 10 days old.
1101 - Fix a crash bug in the presence of DNS hijacking (reported by Andrew
1103 - Detect and reject malformed DNS responses containing circular
1105 - If exits are rare enough that we're not marking exits as guards,
1106 ignore exit bandwidth when we're deciding the required bandwidth
1108 - When we're handling a directory connection tunneled over Tor,
1109 don't fill up internal memory buffers with all the data we want
1110 to tunnel; instead, only add it if the OR connection that will
1111 eventually receive it has some room for it. (This can lead to
1112 slowdowns in tunneled dir connections; a better solution will have
1115 o Minor bugfixes (dns):
1116 - Add some defensive programming to eventdns.c in an attempt to catch
1117 possible memory-stomping bugs.
1118 - Detect and reject DNS replies containing IPv4 or IPv6 records with
1119 an incorrect number of bytes. (Previously, we would ignore the
1121 - Fix as-yet-unused reverse IPv6 lookup code so it sends nybbles
1122 in the correct order, and doesn't crash.
1123 - Free memory held in recently-completed DNS lookup attempts on exit.
1124 This was not a memory leak, but may have been hiding memory leaks.
1125 - Handle TTL values correctly on reverse DNS lookups.
1126 - Treat failure to parse resolv.conf as an error.
1128 o Minor bugfixes (other):
1129 - Fix crash with "tor --list-fingerprint" (reported by seeess).
1130 - When computing clock skew from directory HTTP headers, consider what
1131 time it was when we finished asking for the directory, not what
1133 - Expire socks connections if they spend too long waiting for the
1134 handshake to finish. Previously we would let them sit around for
1135 days, if the connecting application didn't close them either.
1136 - And if the socks handshake hasn't started, don't send a
1137 "DNS resolve socks failed" handshake reply; just close it.
1138 - Stop using C functions that OpenBSD's linker doesn't like.
1139 - Don't launch requests for descriptors unless we have networkstatuses
1140 from at least half of the authorities. This delays the first
1141 download slightly under pathological circumstances, but can prevent
1142 us from downloading a bunch of descriptors we don't need.
1143 - Do not log IPs with TLS failures for incoming TLS
1144 connections. (Fixes bug 382.)
1145 - If the user asks to use invalid exit nodes, be willing to use
1147 - Stop using the reserved ac_cv namespace in our configure script.
1148 - Call stat() slightly less often; use fstat() when possible.
1149 - Refactor the way we handle pending circuits when an OR connection
1150 completes or fails, in an attempt to fix a rare crash bug.
1151 - Only rewrite a conn's address based on X-Forwarded-For: headers
1152 if it's a parseable public IP address; and stop adding extra quotes
1153 to the resulting address.
1156 - Weight directory requests by advertised bandwidth. Now we can
1157 let servers enable write limiting but still allow most clients to
1158 succeed at their directory requests. (We still ignore weights when
1159 choosing a directory authority; I hope this is a feature.)
1162 - Create a new file ReleaseNotes which was the old ChangeLog. The
1163 new ChangeLog file now includes the summaries for all development
1165 - Check for addresses with invalid characters at the exit as well
1166 as at the client, and warn less verbosely when they fail. You can
1167 override this by setting ServerDNSAllowNonRFC953Addresses to 1.
1168 - Adapt a patch from goodell to let the contrib/exitlist script
1169 take arguments rather than require direct editing.
1170 - Inform the server operator when we decide not to advertise a
1171 DirPort due to AccountingMax enabled or a low BandwidthRate. It
1172 was confusing Zax, so now we're hopefully more helpful.
1173 - Bring us one step closer to being able to establish an encrypted
1174 directory tunnel without knowing a descriptor first. Still not
1175 ready yet. As part of the change, now assume we can use a
1176 create_fast cell if we don't know anything about a router.
1177 - Allow exit nodes to use nameservers running on ports other than 53.
1178 - Servers now cache reverse DNS replies.
1179 - Add an --ignore-missing-torrc command-line option so that we can
1180 get the "use sensible defaults if the configuration file doesn't
1181 exist" behavior even when specifying a torrc location on the command
1184 o Minor features (controller):
1185 - Track reasons for OR connection failure; make these reasons
1186 available via the controller interface. (Patch from Mike Perry.)
1187 - Add a SOCKS_BAD_HOSTNAME client status event so controllers
1188 can learn when clients are sending malformed hostnames to Tor.
1189 - Clean up documentation for controller status events.
1190 - Add a REMAP status to stream events to note that a stream's
1191 address has changed because of a cached address or a MapAddress
1195 Changes in version 0.1.2.6-alpha - 2007-01-09
1197 - Fix an assert error introduced in 0.1.2.5-alpha: if a single TLS
1198 connection handles more than 4 gigs in either direction, we crash.
1199 - Fix an assert error introduced in 0.1.2.5-alpha: if we're an
1200 advertised exit node, somebody might try to exit from us when
1201 we're bootstrapping and before we've built our descriptor yet.
1202 Refuse the connection rather than crashing.
1205 - Warn if we (as a server) find that we've resolved an address that we
1206 weren't planning to resolve.
1207 - Warn that using select() on any libevent version before 1.1 will be
1208 unnecessarily slow (even for select()).
1209 - Flush ERR-level controller status events just like we currently
1210 flush ERR-level log events, so that a Tor shutdown doesn't prevent
1211 the controller from learning about current events.
1213 o Minor features (more controller status events):
1214 - Implement EXTERNAL_ADDRESS server status event so controllers can
1215 learn when our address changes.
1216 - Implement BAD_SERVER_DESCRIPTOR server status event so controllers
1217 can learn when directories reject our descriptor.
1218 - Implement SOCKS_UNKNOWN_PROTOCOL client status event so controllers
1219 can learn when a client application is speaking a non-socks protocol
1221 - Implement DANGEROUS_SOCKS client status event so controllers
1222 can learn when a client application is leaking DNS addresses.
1223 - Implement BUG general status event so controllers can learn when
1224 Tor is unhappy about its internal invariants.
1225 - Implement CLOCK_SKEW general status event so controllers can learn
1226 when Tor thinks the system clock is set incorrectly.
1227 - Implement GOOD_SERVER_DESCRIPTOR and ACCEPTED_SERVER_DESCRIPTOR
1228 server status events so controllers can learn when their descriptors
1229 are accepted by a directory.
1230 - Implement CHECKING_REACHABILITY and REACHABILITY_{SUCCEEDED|FAILED}
1231 server status events so controllers can learn about Tor's progress in
1232 deciding whether it's reachable from the outside.
1233 - Implement BAD_LIBEVENT general status event so controllers can learn
1234 when we have a version/method combination in libevent that needs to
1236 - Implement NAMESERVER_STATUS, NAMESERVER_ALL_DOWN, DNS_HIJACKED,
1237 and DNS_USELESS server status events so controllers can learn
1238 about changes to DNS server status.
1240 o Minor features (directory):
1241 - Authorities no longer recommend exits as guards if this would shift
1242 too much load to the exit nodes.
1245 Changes in version 0.1.2.5-alpha - 2007-01-06
1247 - Enable write limiting as well as read limiting. Now we sacrifice
1248 capacity if we're pushing out lots of directory traffic, rather
1249 than overrunning the user's intended bandwidth limits.
1250 - Include TLS overhead when counting bandwidth usage; previously, we
1251 would count only the bytes sent over TLS, but not the bytes used
1253 - Support running the Tor service with a torrc not in the same
1254 directory as tor.exe and default to using the torrc located in
1255 the %appdata%\Tor\ of the user who installed the service. Patch
1257 - Servers now check for the case when common DNS requests are going to
1258 wildcarded addresses (i.e. all getting the same answer), and change
1259 their exit policy to reject *:* if it's happening.
1260 - Implement BEGIN_DIR cells, so we can connect to the directory
1261 server via TLS to do encrypted directory requests rather than
1262 plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
1263 config options if you like.
1265 o Minor features (config and docs):
1266 - Start using the state file to store bandwidth accounting data:
1267 the bw_accounting file is now obsolete. We'll keep generating it
1268 for a while for people who are still using 0.1.2.4-alpha.
1269 - Try to batch changes to the state file so that we do as few
1270 disk writes as possible while still storing important things in
1272 - The state file and the bw_accounting file get saved less often when
1273 the AvoidDiskWrites config option is set.
1274 - Make PIDFile work on Windows (untested).
1275 - Add internal descriptions for a bunch of configuration options:
1276 accessible via controller interface and in comments in saved
1278 - Reject *:563 (NNTPS) in the default exit policy. We already reject
1279 NNTP by default, so this seems like a sensible addition.
1280 - Clients now reject hostnames with invalid characters. This should
1281 avoid some inadvertent info leaks. Add an option
1282 AllowNonRFC953Hostnames to disable this behavior, in case somebody
1283 is running a private network with hosts called @, !, and #.
1284 - Add a maintainer script to tell us which options are missing
1285 documentation: "make check-docs".
1286 - Add a new address-spec.txt document to describe our special-case
1287 addresses: .exit, .onion, and .noconnnect.
1289 o Minor features (DNS):
1290 - Ongoing work on eventdns infrastructure: now it has dns server
1291 and ipv6 support. One day Tor will make use of it.
1292 - Add client-side caching for reverse DNS lookups.
1293 - Add support to tor-resolve tool for reverse lookups and SOCKS5.
1294 - When we change nameservers or IP addresses, reset and re-launch
1295 our tests for DNS hijacking.
1297 o Minor features (directory):
1298 - Authorities now specify server versions in networkstatus. This adds
1299 about 2% to the size of compressed networkstatus docs, and allows
1300 clients to tell which servers support BEGIN_DIR and which don't.
1301 The implementation is forward-compatible with a proposed future
1302 protocol version scheme not tied to Tor versions.
1303 - DirServer configuration lines now have an orport= option so
1304 clients can open encrypted tunnels to the authorities without
1305 having downloaded their descriptors yet. Enabled for moria1,
1306 moria2, tor26, and lefkada now in the default configuration.
1307 - Directory servers are more willing to send a 503 "busy" if they
1308 are near their write limit, especially for v1 directory requests.
1309 Now they can use their limited bandwidth for actual Tor traffic.
1310 - Clients track responses with status 503 from dirservers. After a
1311 dirserver has given us a 503, we try not to use it until an hour has
1312 gone by, or until we have no dirservers that haven't given us a 503.
1313 - When we get a 503 from a directory, and we're not a server, we don't
1314 count the failure against the total number of failures allowed
1315 for the thing we're trying to download.
1316 - Report X-Your-Address-Is correctly from tunneled directory
1317 connections; don't report X-Your-Address-Is when it's an internal
1318 address; and never believe reported remote addresses when they're
1320 - Protect against an unlikely DoS attack on directory servers.
1321 - Add a BadDirectory flag to network status docs so that authorities
1322 can (eventually) tell clients about caches they believe to be
1325 o Minor features (controller):
1326 - Have GETINFO dir/status/* work on hosts with DirPort disabled.
1327 - Reimplement GETINFO so that info/names stays in sync with the
1329 - Implement "GETINFO fingerprint".
1330 - Implement "SETEVENTS GUARD" so controllers can get updates on
1331 entry guard status as it changes.
1333 o Minor features (clean up obsolete pieces):
1334 - Remove some options that have been deprecated since at least
1335 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
1336 SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
1338 - We no longer look for identity and onion keys in "identity.key" and
1339 "onion.key" -- these were replaced by secret_id_key and
1340 secret_onion_key in 0.0.8pre1.
1341 - We no longer require unrecognized directory entries to be
1344 o Major bugfixes (security):
1345 - Stop sending the HttpProxyAuthenticator string to directory
1346 servers when directory connections are tunnelled through Tor.
1347 - Clients no longer store bandwidth history in the state file.
1348 - Do not log introduction points for hidden services if SafeLogging
1350 - When generating bandwidth history, round down to the nearest
1351 1k. When storing accounting data, round up to the nearest 1k.
1352 - When we're running as a server, remember when we last rotated onion
1353 keys, so that we will rotate keys once they're a week old even if
1354 we never stay up for a week ourselves.
1356 o Major bugfixes (other):
1357 - Fix a longstanding bug in eventdns that prevented the count of
1358 timed-out resolves from ever being reset. This bug caused us to
1359 give up on a nameserver the third time it timed out, and try it
1360 10 seconds later... and to give up on it every time it timed out
1362 - Take out the '5 second' timeout from the connection retry
1363 schedule. Now the first connect attempt will wait a full 10
1364 seconds before switching to a new circuit. Perhaps this will help
1365 a lot. Based on observations from Mike Perry.
1366 - Fix a bug on the Windows implementation of tor_mmap_file() that
1367 would prevent the cached-routers file from ever loading. Reported
1371 - Fix an assert failure when a directory authority sets
1372 AuthDirRejectUnlisted and then receives a descriptor from an
1373 unlisted router. Reported by seeess.
1374 - Avoid a double-free when parsing malformed DirServer lines.
1375 - Fix a bug when a BSD-style PF socket is first used. Patch from
1377 - Fix a bug in 0.1.2.2-alpha that prevented clients from asking
1378 to resolve an address at a given exit node even when they ask for
1380 - Servers no longer ever list themselves in their "family" line,
1381 even if configured to do so. This makes it easier to configure
1382 family lists conveniently.
1383 - When running as a server, don't fall back to 127.0.0.1 when no
1384 nameservers are configured in /etc/resolv.conf; instead, make the
1385 user fix resolv.conf or specify nameservers explicitly. (Resolves
1387 - Stop accepting certain malformed ports in configured exit policies.
1388 - Don't re-write the fingerprint file every restart, unless it has
1390 - Stop warning when a single nameserver fails: only warn when _all_ of
1391 our nameservers have failed. Also, when we only have one nameserver,
1392 raise the threshold for deciding that the nameserver is dead.
1393 - Directory authorities now only decide that routers are reachable
1394 if their identity keys are as expected.
1395 - When the user uses bad syntax in the Log config line, stop
1396 suggesting other bad syntax as a replacement.
1397 - Correctly detect ipv6 DNS capability on OpenBSD.
1399 o Minor bugfixes (controller):
1400 - Report the circuit number correctly in STREAM CLOSED events. Bug
1401 reported by Mike Perry.
1402 - Do not report bizarre values for results of accounting GETINFOs
1403 when the last second's write or read exceeds the allotted bandwidth.
1404 - Report "unrecognized key" rather than an empty string when the
1405 controller tries to fetch a networkstatus that doesn't exist.
1408 Changes in version 0.1.1.26 - 2006-12-14
1409 o Security bugfixes:
1410 - Stop sending the HttpProxyAuthenticator string to directory
1411 servers when directory connections are tunnelled through Tor.
1412 - Clients no longer store bandwidth history in the state file.
1413 - Do not log introduction points for hidden services if SafeLogging
1417 - Fix an assert failure when a directory authority sets
1418 AuthDirRejectUnlisted and then receives a descriptor from an
1419 unlisted router (reported by seeess).
1422 Changes in version 0.1.2.4-alpha - 2006-12-03
1424 - Add support for using natd; this allows FreeBSDs earlier than
1425 5.1.2 to have ipfw send connections through Tor without using
1426 SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
1429 - Make all connections to addresses of the form ".noconnect"
1430 immediately get closed. This lets application/controller combos
1431 successfully test whether they're talking to the same Tor by
1432 watching for STREAM events.
1433 - Make cross.sh cross-compilation script work even when autogen.sh
1434 hasn't been run. (Patch from Michael Mohr.)
1435 - Statistics dumped by -USR2 now include a breakdown of public key
1436 operations, for profiling.
1439 - Fix a major leak when directory authorities parse their
1440 approved-routers list, a minor memory leak when we fail to pick
1441 an exit node, and a few rare leaks on errors.
1442 - Handle TransPort connections even when the server sends data before
1443 the client sends data. Previously, the connection would just hang
1444 until the client sent data. (Patch from tup based on patch from
1446 - Avoid assert failure when our cached-routers file is empty on
1450 - Don't log spurious warnings when we see a circuit close reason we
1451 don't recognize; it's probably just from a newer version of Tor.
1452 - Have directory authorities allow larger amounts of drift in uptime
1453 without replacing the server descriptor: previously, a server that
1454 restarted every 30 minutes could have 48 "interesting" descriptors
1456 - Start linking to the Tor specification and Tor reference manual
1457 correctly in the Windows installer.
1458 - Add Vidalia to the OS X uninstaller script, so when we uninstall
1459 Tor/Privoxy we also uninstall Vidalia.
1460 - Resume building on Irix64, and fix a lot of warnings from its
1462 - Don't corrupt last_guessed_ip in router_new_address_suggestion()
1463 when we're running as a client.
1466 Changes in version 0.1.1.25 - 2006-11-04
1468 - When a client asks us to resolve (rather than connect to)
1469 an address, and we have a cached answer, give them the cached
1470 answer. Previously, we would give them no answer at all.
1471 - We were building exactly the wrong circuits when we predict
1472 hidden service requirements, meaning Tor would have to build all
1473 its circuits on demand.
1474 - If none of our live entry guards have a high uptime, but we
1475 require a guard with a high uptime, try adding a new guard before
1476 we give up on the requirement. This patch should make long-lived
1477 connections more stable on average.
1478 - When testing reachability of our DirPort, don't launch new
1479 tests when there's already one in progress -- unreachable
1480 servers were stacking up dozens of testing streams.
1482 o Security bugfixes:
1483 - When the user sends a NEWNYM signal, clear the client-side DNS
1484 cache too. Otherwise we continue to act on previous information.
1487 - Avoid a memory corruption bug when creating a hash table for
1489 - Avoid possibility of controller-triggered crash when misusing
1490 certain commands from a v0 controller on platforms that do not
1491 handle printf("%s",NULL) gracefully.
1492 - Avoid infinite loop on unexpected controller input.
1493 - Don't log spurious warnings when we see a circuit close reason we
1494 don't recognize; it's probably just from a newer version of Tor.
1495 - Add Vidalia to the OS X uninstaller script, so when we uninstall
1496 Tor/Privoxy we also uninstall Vidalia.
1499 Changes in version 0.1.2.3-alpha - 2006-10-29
1501 - Prepare for servers to publish descriptors less often: never
1502 discard a descriptor simply for being too old until either it is
1503 recommended by no authorities, or until we get a better one for
1504 the same router. Make caches consider retaining old recommended
1505 routers for even longer.
1506 - If most authorities set a BadExit flag for a server, clients
1507 don't think of it as a general-purpose exit. Clients only consider
1508 authorities that advertise themselves as listing bad exits.
1509 - Directory servers now provide 'Pragma: no-cache' and 'Expires'
1510 headers for content, so that we can work better in the presence of
1511 caching HTTP proxies.
1512 - Allow authorities to list nodes as bad exits by fingerprint or by
1515 o Minor features, controller:
1516 - Add a REASON field to CIRC events; for backward compatibility, this
1517 field is sent only to controllers that have enabled the extended
1518 event format. Also, add additional reason codes to explain why
1519 a given circuit has been destroyed or truncated. (Patches from
1521 - Add a REMOTE_REASON field to extended CIRC events to tell the
1522 controller about why a remote OR told us to close a circuit.
1523 - Stream events also now have REASON and REMOTE_REASON fields,
1524 working much like those for circuit events.
1525 - There's now a GETINFO ns/... field so that controllers can ask Tor
1526 about the current status of a router.
1527 - A new event type "NS" to inform a controller when our opinion of
1528 a router's status has changed.
1529 - Add a GETINFO events/names and GETINFO features/names so controllers
1530 can tell which events and features are supported.
1531 - A new CLEARDNSCACHE signal to allow controllers to clear the
1532 client-side DNS cache without expiring circuits.
1534 o Security bugfixes:
1535 - When the user sends a NEWNYM signal, clear the client-side DNS
1536 cache too. Otherwise we continue to act on previous information.
1539 - Avoid sending junk to controllers or segfaulting when a controller
1540 uses EVENT_NEW_DESC with verbose nicknames.
1541 - Stop triggering asserts if the controller tries to extend hidden
1542 service circuits (reported by mwenge).
1543 - Avoid infinite loop on unexpected controller input.
1544 - When the controller does a "GETINFO network-status", tell it
1545 about even those routers whose descriptors are very old, and use
1546 long nicknames where appropriate.
1547 - Change NT service functions to be loaded on demand. This lets us
1548 build with MinGW without breaking Tor for Windows 98 users.
1549 - Do DirPort reachability tests less often, since a single test
1550 chews through many circuits before giving up.
1551 - In the hidden service example in torrc.sample, stop recommending
1552 esoteric and discouraged hidden service options.
1553 - When stopping an NT service, wait up to 10 sec for it to actually
1554 stop. (Patch from Matt Edman; resolves bug 295.)
1555 - Fix handling of verbose nicknames with ORCONN controller events:
1556 make them show up exactly when requested, rather than exactly when
1558 - When reporting verbose nicknames in entry_guards_getinfo(), avoid
1559 printing a duplicate "$" in the keys we send (reported by mwenge).
1560 - Correctly set maximum connection limit on Cygwin. (This time
1562 - Try to detect Windows correctly when cross-compiling.
1563 - Detect the size of the routers file correctly even if it is
1564 corrupted (on systems without mmap) or not page-aligned (on systems
1565 with mmap). This bug was harmless.
1566 - Sometimes we didn't bother sending a RELAY_END cell when an attempt
1567 to open a stream fails; now we do in more cases. This should
1568 make clients able to find a good exit faster in some cases, since
1569 unhandleable requests will now get an error rather than timing out.
1570 - Resolve two memory leaks when rebuilding the on-disk router cache
1571 (reported by fookoowa).
1572 - Clean up minor code warnings suggested by the MIPSpro C compiler,
1573 and reported by some Centos users.
1574 - Controller signals now work on non-Unix platforms that don't define
1575 SIGUSR1 and SIGUSR2 the way we expect.
1576 - Patch from Michael Mohr to contrib/cross.sh, so it checks more
1577 values before failing, and always enables eventdns.
1578 - Libevent-1.2 exports, but does not define in its headers, strlcpy.
1579 Try to fix this in configure.in by checking for most functions
1580 before we check for libevent.
1583 Changes in version 0.1.2.2-alpha - 2006-10-07
1585 - Make our async eventdns library on-by-default for Tor servers,
1586 and plan to deprecate the separate dnsworker threads.
1587 - Add server-side support for "reverse" DNS lookups (using PTR
1588 records so clients can determine the canonical hostname for a given
1589 IPv4 address). Only supported by servers using eventdns; servers
1590 now announce in their descriptors whether they support eventdns.
1591 - Specify and implement client-side SOCKS5 interface for reverse DNS
1592 lookups (see doc/socks-extensions.txt).
1593 - Add a BEGIN_DIR relay cell type for an easier in-protocol way to
1594 connect to directory servers through Tor. Previously, clients needed
1595 to find Tor exits to make private connections to directory servers.
1596 - Avoid choosing Exit nodes for entry or middle hops when the
1597 total bandwidth available from non-Exit nodes is much higher than
1598 the total bandwidth available from Exit nodes.
1599 - Workaround for name servers (like Earthlink's) that hijack failing
1600 DNS requests and replace the no-such-server answer with a "helpful"
1601 redirect to an advertising-driven search portal. Also work around
1602 DNS hijackers who "helpfully" decline to hijack known-invalid
1603 RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
1604 lets you turn it off.
1605 - Send out a burst of long-range padding cells once we've established
1606 that we're reachable. Spread them over 4 circuits, so hopefully
1607 a few will be fast. This exercises our bandwidth and bootstraps
1608 us into the directory more quickly.
1610 o New/improved config options:
1611 - Add new config option "ResolvConf" to let the server operator
1612 choose an alternate resolve.conf file when using eventdns.
1613 - Add an "EnforceDistinctSubnets" option to control our "exclude
1614 servers on the same /16" behavior. It's still on by default; this
1615 is mostly for people who want to operate private test networks with
1616 all the machines on the same subnet.
1617 - If one of our entry guards is on the ExcludeNodes list, or the
1618 directory authorities don't think it's a good guard, treat it as
1619 if it were unlisted: stop using it as a guard, and throw it off
1620 the guards list if it stays that way for a long time.
1621 - Allow directory authorities to be marked separately as authorities
1622 for the v1 directory protocol, the v2 directory protocol, and
1623 as hidden service directories, to make it easier to retire old
1624 authorities. V1 authorities should set "HSAuthoritativeDir 1"
1625 to continue being hidden service authorities too.
1626 - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
1628 o Minor features, controller:
1629 - Fix CIRC controller events so that controllers can learn the
1630 identity digests of non-Named servers used in circuit paths.
1631 - Let controllers ask for more useful identifiers for servers. Instead
1632 of learning identity digests for un-Named servers and nicknames
1633 for Named servers, the new identifiers include digest, nickname,
1634 and indication of Named status. Off by default; see control-spec.txt
1635 for more information.
1636 - Add a "getinfo address" controller command so it can display Tor's
1637 best guess to the user.
1638 - New controller event to alert the controller when our server
1639 descriptor has changed.
1640 - Give more meaningful errors on controller authentication failure.
1642 o Minor features, other:
1643 - When asked to resolve a hostname, don't use non-exit servers unless
1644 requested to do so. This allows servers with broken DNS to be
1645 useful to the network.
1646 - Divide eventdns log messages into warn and info messages.
1647 - Reserve the nickname "Unnamed" for routers that can't pick
1648 a hostname: any router can call itself Unnamed; directory
1649 authorities will never allocate Unnamed to any particular router;
1650 clients won't believe that any router is the canonical Unnamed.
1651 - Only include function names in log messages for info/debug messages.
1652 For notice/warn/err, the content of the message should be clear on
1653 its own, and printing the function name only confuses users.
1654 - Avoid some false positives during reachability testing: don't try
1655 to test via a server that's on the same /24 as us.
1656 - If we fail to build a circuit to an intended enclave, and it's
1657 not mandatory that we use that enclave, stop wanting it.
1658 - When eventdns is enabled, allow multithreaded builds on NetBSD and
1659 OpenBSD. (We had previously disabled threads on these platforms
1660 because they didn't have working thread-safe resolver functions.)
1662 o Major bugfixes, anonymity/security:
1663 - If a client asked for a server by name, and there's a named server
1664 in our network-status but we don't have its descriptor yet, we
1665 could return an unnamed server instead.
1666 - Fix NetBSD bug that could allow someone to force uninitialized RAM
1667 to be sent to a server's DNS resolver. This only affects NetBSD
1668 and other platforms that do not bounds-check tolower().
1669 - Reject (most) attempts to use Tor circuits with length one. (If
1670 many people start using Tor as a one-hop proxy, exit nodes become
1671 a more attractive target for compromise.)
1672 - Just because your DirPort is open doesn't mean people should be
1673 able to remotely teach you about hidden service descriptors. Now
1674 only accept rendezvous posts if you've got HSAuthoritativeDir set.
1676 o Major bugfixes, other:
1677 - Don't crash on race condition in dns.c: tor_assert(!resolve->expire)
1678 - When a client asks the server to resolve (not connect to)
1679 an address, and it has a cached answer, give them the cached answer.
1680 Previously, the server would give them no answer at all.
1681 - Allow really slow clients to not hang up five minutes into their
1682 directory downloads (suggested by Adam J. Richter).
1683 - We were building exactly the wrong circuits when we anticipated
1684 hidden service requirements, meaning Tor would have to build all
1685 its circuits on demand.
1686 - Avoid crashing when we mmap a router cache file of size 0.
1687 - When testing reachability of our DirPort, don't launch new
1688 tests when there's already one in progress -- unreachable
1689 servers were stacking up dozens of testing streams.
1691 o Minor bugfixes, correctness:
1692 - If we're a directory mirror and we ask for "all" network status
1693 documents, we would discard status documents from authorities
1695 - Avoid a memory corruption bug when creating a hash table for
1697 - Avoid controller-triggered crash when misusing certain commands
1698 from a v0 controller on platforms that do not handle
1699 printf("%s",NULL) gracefully.
1700 - Don't crash when a controller sends a third argument to an
1701 "extendcircuit" request.
1702 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
1703 response; fix error code when "getinfo dir/status/" fails.
1704 - Avoid crash when telling controller stream-status and a stream
1706 - Patch from Adam Langley to fix assert() in eventdns.c.
1707 - Fix a debug log message in eventdns to say "X resolved to Y"
1708 instead of "X resolved to X".
1709 - Make eventdns give strings for DNS errors, not just error numbers.
1710 - Track unreachable entry guards correctly: don't conflate
1711 'unreachable by us right now' with 'listed as down by the directory
1712 authorities'. With the old code, if a guard was unreachable by
1713 us but listed as running, it would clog our guard list forever.
1714 - Behave correctly in case we ever have a network with more than
1715 2GB/s total advertised capacity.
1716 - Make TrackExitHosts case-insensitive, and fix the behavior of
1717 ".suffix" TrackExitHosts items to avoid matching in the middle of
1719 - Finally fix the openssl warnings from newer gccs that believe that
1720 ignoring a return value is okay, but casting a return value and
1721 then ignoring it is a sign of madness.
1722 - Prevent the contrib/exitlist script from printing the same
1723 result more than once.
1724 - Patch from Steve Hildrey: Generate network status correctly on
1725 non-versioning dirservers.
1726 - Don't listen to the X-Your-Address-Is hint if you did the lookup
1727 via Tor; otherwise you'll think you're the exit node's IP address.
1729 o Minor bugfixes, performance:
1730 - Two small performance improvements on parsing descriptors.
1731 - Major performance improvement on inserting descriptors: change
1732 algorithm from O(n^2) to O(n).
1733 - Make the common memory allocation path faster on machines where
1734 malloc(0) returns a pointer.
1735 - Start remembering X-Your-Address-Is directory hints even if you're
1736 a client, so you can become a server more smoothly.
1737 - Avoid duplicate entries on MyFamily line in server descriptor.
1739 o Packaging, features:
1740 - Remove architecture from OS X builds. The official builds are
1741 now universal binaries.
1742 - The Debian package now uses --verify-config when (re)starting,
1743 to distinguish configuration errors from other errors.
1744 - Update RPMs to require libevent 1.1b.
1746 o Packaging, bugfixes:
1747 - Patches so Tor builds with MinGW on Windows.
1748 - Patches so Tor might run on Cygwin again.
1749 - Resume building on non-gcc compilers and ancient gcc. Resume
1750 building with the -O0 compile flag. Resume building cleanly on
1752 - Run correctly on OS X platforms with case-sensitive filesystems.
1753 - Correct includes for net/if.h and net/pfvar.h on OpenBSD (from Tup).
1754 - Add autoconf checks so Tor can build on Solaris x86 again.
1757 - Documented (and renamed) ServerDNSSearchDomains and
1758 ServerDNSResolvConfFile options.
1759 - Be clearer that the *ListenAddress directives can be repeated
1763 Changes in version 0.1.1.24 - 2006-09-29
1765 - Allow really slow clients to not hang up five minutes into their
1766 directory downloads (suggested by Adam J. Richter).
1767 - Fix major performance regression from 0.1.0.x: instead of checking
1768 whether we have enough directory information every time we want to
1769 do something, only check when the directory information has changed.
1770 This should improve client CPU usage by 25-50%.
1771 - Don't crash if, after a server has been running for a while,
1772 it can't resolve its hostname.
1775 - Allow Tor to start when RunAsDaemon is set but no logs are set.
1776 - Don't crash when the controller receives a third argument to an
1777 "extendcircuit" request.
1778 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
1779 response; fix error code when "getinfo dir/status/" fails.
1780 - Fix configure.in to not produce broken configure files with
1781 more recent versions of autoconf. Thanks to Clint for his auto*
1783 - Fix security bug on NetBSD that could allow someone to force
1784 uninitialized RAM to be sent to a server's DNS resolver. This
1785 only affects NetBSD and other platforms that do not bounds-check
1787 - Warn user when using libevent 1.1a or earlier with win32 or kqueue
1788 methods: these are known to be buggy.
1789 - If we're a directory mirror and we ask for "all" network status
1790 documents, we would discard status documents from authorities
1794 Changes in version 0.1.2.1-alpha - 2006-08-27
1796 - Add "eventdns" async dns library from Adam Langley, tweaked to
1797 build on OSX and Windows. Only enabled if you pass the
1798 --enable-eventdns argument to configure.
1799 - Allow servers with no hostname or IP address to learn their
1800 IP address by asking the directory authorities. This code only
1801 kicks in when you would normally have exited with a "no address"
1802 error. Nothing's authenticated, so use with care.
1803 - Rather than waiting a fixed amount of time between retrying
1804 application connections, we wait only 5 seconds for the first,
1805 10 seconds for the second, and 15 seconds for each retry after
1806 that. Hopefully this will improve the expected user experience.
1807 - Patch from Tup to add support for transparent AP connections:
1808 this basically bundles the functionality of trans-proxy-tor
1809 into the Tor mainline. Now hosts with compliant pf/netfilter
1810 implementations can redirect TCP connections straight to Tor
1811 without diverting through SOCKS. Needs docs.
1812 - Busy directory servers save lots of memory by spooling server
1813 descriptors, v1 directories, and v2 networkstatus docs to buffers
1814 as needed rather than en masse. Also mmap the cached-routers
1815 files, so we don't need to keep the whole thing in memory too.
1816 - Automatically avoid picking more than one node from the same
1817 /16 network when constructing a circuit.
1818 - Revise and clean up the torrc.sample that we ship with; add
1819 a section for BandwidthRate and BandwidthBurst.
1822 - Split circuit_t into origin_circuit_t and or_circuit_t, and
1823 split connection_t into edge, or, dir, control, and base structs.
1824 These will save quite a bit of memory on busy servers, and they'll
1825 also help us track down bugs in the code and bugs in the spec.
1826 - Experimentally re-enable kqueue on OSX when using libevent 1.1b
1827 or later. Log when we are doing this, so we can diagnose it when
1828 it fails. (Also, recommend libevent 1.1b for kqueue and
1829 win32 methods; deprecate libevent 1.0b harder; make libevent
1830 recommendation system saner.)
1831 - Start being able to build universal binaries on OS X (thanks
1833 - Export the default exit policy via the control port, so controllers
1834 don't need to guess what it is / will be later.
1835 - Add a man page entry for ProtocolWarnings.
1836 - Add TestVia config option to the man page.
1837 - Remove even more protocol-related warnings from Tor server logs,
1838 such as bad TLS handshakes and malformed begin cells.
1839 - Stop fetching descriptors if you're not a dir mirror and you
1840 haven't tried to establish any circuits lately. [This currently
1841 causes some dangerous behavior, because when you start up again
1842 you'll use your ancient server descriptors.]
1843 - New DirPort behavior: if you have your dirport set, you download
1844 descriptors aggressively like a directory mirror, whether or not
1846 - Get rid of the router_retry_connections notion. Now routers
1847 no longer try to rebuild long-term connections to directory
1848 authorities, and directory authorities no longer try to rebuild
1849 long-term connections to all servers. We still don't hang up
1850 connections in these two cases though -- we need to look at it
1851 more carefully to avoid flapping, and we likely need to wait til
1852 0.1.1.x is obsolete.
1853 - Drop compatibility with obsolete Tors that permit create cells
1854 to have the wrong circ_id_type.
1855 - Re-enable per-connection rate limiting. Get rid of the "OP
1856 bandwidth" concept. Lay groundwork for "bandwidth classes" --
1857 separate global buckets that apply depending on what sort of conn
1859 - Start publishing one minute or so after we find our ORPort
1860 to be reachable. This will help reduce the number of descriptors
1861 we have for ourselves floating around, since it's quite likely
1862 other things (e.g. DirPort) will change during that minute too.
1863 - Fork the v1 directory protocol into its own spec document,
1864 and mark dir-spec.txt as the currently correct (v2) spec.
1867 - When we find our DirPort to be reachable, publish a new descriptor
1868 so we'll tell the world (reported by pnx).
1869 - Publish a new descriptor after we hup/reload. This is important
1870 if our config has changed such that we'll want to start advertising
1871 our DirPort now, etc.
1872 - Allow Tor to start when RunAsDaemon is set but no logs are set.
1873 - When we have a state file we cannot parse, tell the user and
1874 move it aside. Now we avoid situations where the user starts
1875 Tor in 1904, Tor writes a state file with that timestamp in it,
1876 the user fixes her clock, and Tor refuses to start.
1877 - Fix configure.in to not produce broken configure files with
1878 more recent versions of autoconf. Thanks to Clint for his auto*
1880 - "tor --verify-config" now exits with -1(255) or 0 depending on
1881 whether the config options are bad or good.
1882 - Resolve bug 321 when using dnsworkers: append a period to every
1883 address we resolve at the exit node, so that we do not accidentally
1884 pick up local addresses, and so that failing searches are retried
1885 in the resolver search domains. (This is already solved for
1886 eventdns.) (This breaks Blossom servers for now.)
1887 - If we are using an exit enclave and we can't connect, e.g. because
1888 its webserver is misconfigured to not listen on localhost, then
1889 back off and try connecting from somewhere else before we fail.
1892 - Start compiling on MinGW on Windows (patches from Mike Chiussi).
1893 - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
1894 - Fix bug 314: Tor clients issued "unsafe socks" warnings even
1895 when the IP address is mapped through MapAddress to a hostname.
1896 - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
1897 useless IPv6 DNS resolves.
1898 - Patch suggested by Karsten Loesing: respond to SIGNAL command
1899 before we execute the signal, in case the signal shuts us down.
1900 - Clean up AllowInvalidNodes man page entry.
1901 - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
1902 - Add more asserts to track down an assert error on a windows Tor
1903 server with connection_add being called with socket == -1.
1904 - Handle reporting OR_CONN_EVENT_NEW events to the controller.
1905 - Fix misleading log messages: an entry guard that is "unlisted",
1906 as well as not known to be "down" (because we've never heard
1907 of it), is not therefore "up".
1908 - Remove code to special-case "-cvs" ending, since it has not
1909 actually mattered since 0.0.9.
1910 - Make our socks5 handling more robust to broken socks clients:
1911 throw out everything waiting on the buffer in between socks
1912 handshake phases, since they can't possibly (so the theory
1913 goes) have predicted what we plan to respond to them.
1916 Changes in version 0.1.1.23 - 2006-07-30
1918 - Fast Tor servers, especially exit nodes, were triggering asserts
1919 due to a bug in handling the list of pending DNS resolves. Some
1920 bugs still remain here; we're hunting them.
1921 - Entry guards could crash clients by sending unexpected input.
1922 - More fixes on reachability testing: if you find yourself reachable,
1923 then don't ever make any client requests (so you stop predicting
1924 circuits), then hup or have your clock jump, then later your IP
1925 changes, you won't think circuits are working, so you won't try to
1926 test reachability, so you won't publish.
1929 - Avoid a crash if the controller does a resetconf firewallports
1930 and then a setconf fascistfirewall=1.
1931 - Avoid an integer underflow when the dir authority decides whether
1932 a router is stable: we might wrongly label it stable, and compute
1933 a slightly wrong median stability, when a descriptor is published
1935 - Fix a place where we might trigger an assert if we can't build our
1936 own server descriptor yet.
1939 Changes in version 0.1.1.22 - 2006-07-05
1941 - Fix a big bug that was causing servers to not find themselves
1942 reachable if they changed IP addresses. Since only 0.1.1.22+
1943 servers can do reachability testing correctly, now we automatically
1944 make sure to test via one of these.
1945 - Fix to allow clients and mirrors to learn directory info from
1946 descriptor downloads that get cut off partway through.
1947 - Directory authorities had a bug in deciding if a newly published
1948 descriptor was novel enough to make everybody want a copy -- a few
1949 servers seem to be publishing new descriptors many times a minute.
1951 - Fix a rare bug that was causing some servers to complain about
1952 "closing wedged cpuworkers" and skip some circuit create requests.
1953 - Make the Exit flag in directory status documents actually work.
1956 Changes in version 0.1.1.21 - 2006-06-10
1957 o Crash and assert fixes from 0.1.1.20:
1958 - Fix a rare crash on Tor servers that have enabled hibernation.
1959 - Fix a seg fault on startup for Tor networks that use only one
1960 directory authority.
1961 - Fix an assert from a race condition that occurs on Tor servers
1962 while exiting, where various threads are trying to log that they're
1963 exiting, and delete the logs, at the same time.
1964 - Make our unit tests pass again on certain obscure platforms.
1967 - Add support for building SUSE RPM packages.
1968 - Speed up initial bootstrapping for clients: if we are making our
1969 first ever connection to any entry guard, then don't mark it down
1971 - When only one Tor server in the network is labelled as a guard,
1972 and we've already picked him, we would cycle endlessly picking him
1973 again, being unhappy about it, etc. Now we specifically exclude
1974 current guards when picking a new guard.
1975 - Servers send create cells more reliably after the TLS connection
1976 is established: we were sometimes forgetting to send half of them
1977 when we had more than one pending.
1978 - If we get a create cell that asks us to extend somewhere, but the
1979 Tor server there doesn't match the expected digest, we now send
1980 a destroy cell back, rather than silently doing nothing.
1981 - Make options->RedirectExit work again.
1982 - Make cookie authentication for the controller work again.
1983 - Stop being picky about unusual characters in the arguments to
1984 mapaddress. It's none of our business.
1985 - Add a new config option "TestVia" that lets you specify preferred
1986 middle hops to use for test circuits. Perhaps this will let me
1987 debug the reachability problems better.
1989 o Log / documentation fixes:
1990 - If we're a server and some peer has a broken TLS certificate, don't
1991 log about it unless ProtocolWarnings is set, i.e., we want to hear
1992 about protocol violations by others.
1993 - Fix spelling of VirtualAddrNetwork in man page.
1994 - Add a better explanation at the top of the autogenerated torrc file
1995 about what happened to our old torrc.
1998 Changes in version 0.1.1.20 - 2006-05-23
2000 - Downgrade a log severity where servers complain that they're
2002 - Avoid a compile warning on FreeBSD.
2003 - Remove string size limit on NEWDESC messages; solve bug 291.
2004 - Correct the RunAsDaemon entry in the man page; ignore RunAsDaemon
2005 more thoroughly when we're running on windows.
2008 Changes in version 0.1.1.19-rc - 2006-05-03
2010 - Regenerate our local descriptor if it's dirty and we try to use
2011 it locally (e.g. if it changes during reachability detection).
2012 - If we setconf our ORPort to 0, we continued to listen on the
2013 old ORPort and receive connections.
2014 - Avoid a second warning about machine/limits.h on Debian
2016 - Be willing to add our own routerinfo into the routerlist.
2017 Now authorities will include themselves in their directories
2018 and network-statuses.
2019 - Stop trying to upload rendezvous descriptors to every
2020 directory authority: only try the v1 authorities.
2021 - Servers no longer complain when they think they're not
2022 registered with the directory authorities. There were too many
2024 - Backport dist-rpm changes so rpms can be built without errors.
2027 - Implement an option, VirtualAddrMask, to set which addresses
2028 get handed out in response to mapaddress requests. This works
2029 around a bug in tsocks where 127.0.0.0/8 is never socksified.
2032 Changes in version 0.1.1.18-rc - 2006-04-10
2034 - Work harder to download live network-statuses from all the
2035 directory authorities we know about. Improve the threshold
2036 decision logic so we're more robust to edge cases.
2037 - When fetching rendezvous descriptors, we were willing to ask
2038 v2 authorities too, which would always return 404.
2041 - Stop listing down or invalid nodes in the v1 directory. This will
2042 reduce its bulk by about 1/3, and reduce load on directory
2044 - When deciding whether a router is Fast or Guard-worthy, consider
2045 his advertised BandwidthRate and not just the BandwidthCapacity.
2046 - No longer ship INSTALL and README files -- they are useless now.
2047 - Force rpmbuild to behave and honor target_cpu.
2048 - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
2049 - Start to include translated versions of the tor-doc-*.html
2050 files, along with the screenshots. Still needs more work.
2051 - Start sending back 512 and 451 errors if mapaddress fails,
2052 rather than not sending anything back at all.
2053 - When we fail to bind or listen on an incoming or outgoing
2054 socket, we should close it before failing. otherwise we just
2055 leak it. (thanks to weasel for finding.)
2056 - Allow "getinfo dir/status/foo" to work, as long as your DirPort
2057 is enabled. (This is a hack, and will be fixed in 0.1.2.x.)
2058 - Make NoPublish (even though deprecated) work again.
2059 - Fix a minor security flaw where a versioning auth dirserver
2060 could list a recommended version many times in a row to make
2061 clients more convinced that it's recommended.
2062 - Fix crash bug if there are two unregistered servers running
2063 with the same nickname, one of them is down, and you ask for
2064 them by nickname in your EntryNodes or ExitNodes. Also, try
2065 to pick the one that's running rather than an arbitrary one.
2066 - Fix an infinite loop we could hit if we go offline for too long.
2067 - Complain when we hit WSAENOBUFS on recv() or write() too.
2068 Perhaps this will help us hunt the bug.
2069 - If you're not a versioning dirserver, don't put the string
2070 "client-versions \nserver-versions \n" in your network-status.
2071 - Lower the minimum required number of file descriptors to 1000,
2072 so we can have some overhead for Valgrind on Linux, where the
2073 default ulimit -n is 1024.
2076 - Add tor.dizum.com as the fifth authoritative directory server.
2077 - Add a new config option FetchUselessDescriptors, off by default,
2078 for when you plan to run "exitlist" on your client and you want
2079 to know about even the non-running descriptors.
2082 Changes in version 0.1.1.17-rc - 2006-03-28
2084 - Clients and servers since 0.1.1.10-alpha have been expiring
2085 connections whenever they are idle for 5 minutes and they *do*
2086 have circuits on them. Oops. With this new version, clients will
2087 discard their previous entry guard choices and avoid choosing
2088 entry guards running these flawed versions.
2089 - Fix memory leak when uncompressing concatenated zlib streams. This
2090 was causing substantial leaks over time on Tor servers.
2091 - The v1 directory was including servers as much as 48 hours old,
2092 because that's how the new routerlist->routers works. Now only
2093 include them if they're 20 hours old or less.
2096 - Resume building on irix64, netbsd 2.0, etc.
2097 - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
2099 - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
2100 and it is confusing some users.
2101 - Mirrors stop caching the v1 directory so often.
2102 - Make the max number of old descriptors that a cache will hold
2103 rise with the number of directory authorities, so we can scale.
2104 - Change our win32 uname() hack to be more forgiving about what
2105 win32 versions it thinks it's found.
2108 - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
2110 - When the controller's *setconf commands fail, collect an error
2111 message in a string and hand it back to the controller.
2112 - Make the v2 dir's "Fast" flag based on relative capacity, just
2113 like "Stable" is based on median uptime. Name everything in the
2114 top 7/8 Fast, and only the top 1/2 gets to be a Guard.
2115 - Log server fingerprint on startup, so new server operators don't
2116 have to go hunting around their filesystem for it.
2117 - Return a robots.txt on our dirport to discourage google indexing.
2118 - Let the controller ask for GETINFO dir/status/foo so it can ask
2119 directly rather than connecting to the dir port. Only works when
2120 dirport is set for now.
2122 o New config options rather than constants in the code:
2123 - SocksTimeout: How long do we let a socks connection wait
2124 unattached before we fail it?
2125 - CircuitBuildTimeout: Cull non-open circuits that were born
2126 at least this many seconds ago.
2127 - CircuitIdleTimeout: Cull open clean circuits that were born
2128 at least this many seconds ago.
2131 Changes in version 0.1.1.16-rc - 2006-03-18
2132 o Bugfixes on 0.1.1.15-rc:
2133 - Fix assert when the controller asks to attachstream a connect-wait
2134 or resolve-wait stream.
2135 - Now do address rewriting when the controller asks us to attach
2136 to a particular circuit too. This will let Blossom specify
2137 "moria2.exit" without having to learn what moria2's IP address is.
2138 - Make the "tor --verify-config" command-line work again, so people
2139 can automatically check if their torrc will parse.
2140 - Authoritative dirservers no longer require an open connection from
2141 a server to consider him "reachable". We need this change because
2142 when we add new auth dirservers, old servers won't know not to
2144 - Let Tor build on Sun CC again.
2145 - Fix an off-by-one buffer size in dirserv.c that magically never
2146 hit our three authorities but broke sjmurdoch's own tor network.
2147 - If we as a directory mirror don't know of any v1 directory
2148 authorities, then don't try to cache any v1 directories.
2149 - Stop warning about unknown servers in our family when they are
2150 given as hex digests.
2151 - Stop complaining as quickly to the server operator that he
2152 hasn't registered his nickname/key binding.
2153 - Various cleanups so we can add new V2 Auth Dirservers.
2154 - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
2155 reflect the updated flags in our v2 dir protocol.
2156 - Resume allowing non-printable characters for exit streams (both
2157 for connecting and for resolving). Now we tolerate applications
2158 that don't follow the RFCs. But continue to block malformed names
2161 o Bugfixes on 0.1.0.x:
2162 - Fix assert bug in close_logs(): when we close and delete logs,
2163 remove them all from the global "logfiles" list.
2164 - Fix minor integer overflow in calculating when we expect to use up
2165 our bandwidth allocation before hibernating.
2166 - Fix a couple of bugs in OpenSSL detection. Also, deal better when
2167 there are multiple SSLs installed with different versions.
2168 - When we try to be a server and Address is not explicitly set and
2169 our hostname resolves to a private IP address, try to use an
2170 interface address if it has a public address. Now Windows machines
2171 that think of themselves as localhost can work by default.
2174 - Let the controller ask for GETINFO dir/server/foo so it can ask
2175 directly rather than connecting to the dir port.
2176 - Let the controller tell us about certain router descriptors
2177 that it doesn't want Tor to use in circuits. Implement
2178 SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
2179 - New config option SafeSocks to reject all application connections
2180 using unsafe socks protocols. Defaults to off.
2183 Changes in version 0.1.1.15-rc - 2006-03-11
2184 o Bugfixes and cleanups:
2185 - When we're printing strings from the network, don't try to print
2186 non-printable characters. This protects us against shell escape
2187 sequence exploits, and also against attacks to fool humans into
2188 misreading their logs.
2189 - Fix a bug where Tor would fail to establish any connections if you
2190 left it off for 24 hours and then started it: we were happy with
2191 the obsolete network statuses, but they all referred to router
2192 descriptors that were too old to fetch, so we ended up with no
2193 valid router descriptors.
2194 - Fix a seg fault in the controller's "getinfo orconn-status"
2195 command while listing status on incoming handshaking connections.
2196 Introduce a status name "NEW" for these connections.
2197 - If we get a linelist or linelist_s config option from the torrc
2198 (e.g. ExitPolicy) and it has no value, warn and skip rather than
2199 silently resetting it to its default.
2200 - Don't abandon entry guards until they've been down or gone for
2202 - Cleaner and quieter log messages.
2205 - New controller signal NEWNYM that makes new application requests
2207 - Add a new circuit purpose 'controller' to let the controller ask
2208 for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
2209 controller command to let you specify the purpose if you're
2210 starting a new circuit. Add a new SETCIRCUITPURPOSE controller
2211 command to let you change a circuit's purpose after it's been
2213 - Accept "private:*" in routerdesc exit policies; not generated yet
2214 because older Tors do not understand it.
2215 - Add BSD-style contributed startup script "rc.subr" from Peter
2219 Changes in version 0.1.1.14-alpha - 2006-02-20
2220 o Bugfixes on 0.1.1.x:
2221 - Don't die if we ask for a stdout or stderr log (even implicitly)
2222 and we're set to RunAsDaemon -- just warn.
2223 - We still had a few bugs in the OR connection rotation code that
2224 caused directory servers to slowly aggregate connections to other
2225 fast Tor servers. This time for sure!
2226 - Make log entries on Win32 include the name of the function again.
2227 - We were treating a pair of exit policies if they were equal even
2228 if one said accept and the other said reject -- causing us to
2229 not always publish a new descriptor since we thought nothing
2231 - Retry pending server downloads as well as pending networkstatus
2232 downloads when we unexpectedly get a socks request.
2233 - We were ignoring the IS_FAST flag in the directory status,
2234 meaning we were willing to pick trivial-bandwidth nodes for "fast"
2236 - If the controller's SAVECONF command fails (e.g. due to file
2237 permissions), let the controller know that it failed.
2240 - If we're trying to be a Tor server and running Windows 95/98/ME
2241 as a server, explain that we'll likely crash.
2242 - When we're a server, a client asks for an old-style directory,
2243 and our write bucket is empty, don't give it to him. This way
2244 small servers can continue to serve the directory *sometimes*,
2245 without getting overloaded.
2246 - Compress exit policies even more -- look for duplicate lines
2248 - Clients now honor the "guard" flag in the router status when
2249 picking entry guards, rather than looking at is_fast or is_stable.
2250 - Retain unrecognized lines in $DATADIR/state file, so that we can
2251 be forward-compatible.
2252 - Generate 18.0.0.0/8 address policy format in descs when we can;
2253 warn when the mask is not reducible to a bit-prefix.
2254 - Let the user set ControlListenAddress in the torrc. This can be
2255 dangerous, but there are some cases (like a secured LAN) where it
2257 - Split ReachableAddresses into ReachableDirAddresses and
2258 ReachableORAddresses, so we can restrict Dir conns to port 80
2259 and OR conns to port 443.
2260 - Now we can target arch and OS in rpm builds (contributed by
2261 Phobos). Also make the resulting dist-rpm filename match the
2263 - New config options to help controllers: FetchServerDescriptors
2264 and FetchHidServDescriptors for whether to fetch server
2265 info and hidserv info or let the controller do it, and
2266 PublishServerDescriptor and PublishHidServDescriptors.
2267 - Also let the controller set the __AllDirActionsPrivate config
2268 option if you want all directory fetches/publishes to happen via
2269 Tor (it assumes your controller bootstraps your circuits).
2272 Changes in version 0.1.0.17 - 2006-02-17
2273 o Crash bugfixes on 0.1.0.x:
2274 - When servers with a non-zero DirPort came out of hibernation,
2275 sometimes they would trigger an assert.
2277 o Other important bugfixes:
2278 - On platforms that don't have getrlimit (like Windows), we were
2279 artificially constraining ourselves to a max of 1024
2280 connections. Now just assume that we can handle as many as 15000
2281 connections. Hopefully this won't cause other problems.
2283 o Backported features:
2284 - When we're a server, a client asks for an old-style directory,
2285 and our write bucket is empty, don't give it to him. This way
2286 small servers can continue to serve the directory *sometimes*,
2287 without getting overloaded.
2288 - Whenever you get a 503 in response to a directory fetch, try
2289 once more. This will become important once servers start sending
2290 503's whenever they feel busy.
2291 - Fetch a new directory every 120 minutes, not every 40 minutes.
2292 Now that we have hundreds of thousands of users running the old
2293 directory algorithm, it's starting to hurt a lot.
2294 - Bump up the period for forcing a hidden service descriptor upload
2295 from 20 minutes to 1 hour.
2298 Changes in version 0.1.1.13-alpha - 2006-02-09
2299 o Crashes in 0.1.1.x:
2300 - When you tried to setconf ORPort via the controller, Tor would
2301 crash. So people using TorCP to become a server were sad.
2302 - Solve (I hope) the stack-smashing bug that we were seeing on fast
2303 servers. The problem appears to be something do with OpenSSL's
2304 random number generation, or how we call it, or something. Let me
2305 know if the crashes continue.
2306 - Turn crypto hardware acceleration off by default, until we find
2307 somebody smart who can test it for us. (It appears to produce
2308 seg faults in at least some cases.)
2309 - Fix a rare assert error when we've tried all intro points for
2310 a hidden service and we try fetching the service descriptor again:
2311 "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
2314 - Fix a major load balance bug: we were round-robining in 16 KB
2315 chunks, and servers with bandwidthrate of 20 KB, while downloading
2316 a 600 KB directory, would starve their other connections. Now we
2317 try to be a bit more fair.
2318 - Dir authorities and mirrors were never expiring the newest
2319 descriptor for each server, causing memory and directory bloat.
2320 - Fix memory-bloating and connection-bloating bug on servers: We
2321 were never closing any connection that had ever had a circuit on
2322 it, because we were checking conn->n_circuits == 0, yet we had a
2323 bug that let it go negative.
2324 - Make Tor work using squid as your http proxy again -- squid
2325 returns an error if you ask for a URL that's too long, and it uses
2326 a really generic error message. Plus, many people are behind a
2327 transparent squid so they don't even realize it.
2328 - On platforms that don't have getrlimit (like Windows), we were
2329 artificially constraining ourselves to a max of 1024
2330 connections. Now just assume that we can handle as many as 15000
2331 connections. Hopefully this won't cause other problems.
2332 - Add a new config option ExitPolicyRejectPrivate which defaults to
2333 1. This means all exit policies will begin with rejecting private
2334 addresses, unless the server operator explicitly turns it off.
2337 - Clients not longer download descriptors for non-running
2339 - Before we add new directory authorities, we should make it
2340 clear that only v1 authorities should receive/publish hidden
2341 service descriptors.
2344 - As soon as we've fetched some more directory info, immediately
2345 try to download more server descriptors. This way we don't have
2346 a 10 second pause during initial bootstrapping.
2347 - Remove even more loud log messages that the server operator can't
2349 - When we're running an obsolete or un-recommended version, make
2350 the log message more clear about what the problem is and what
2351 versions *are* still recommended.
2352 - Provide a more useful warn message when our onion queue gets full:
2353 the CPU is too slow or the exit policy is too liberal.
2354 - Don't warn when we receive a 503 from a dirserver/cache -- this
2355 will pave the way for them being able to refuse if they're busy.
2356 - When we fail to bind a listener, try to provide a more useful
2357 log message: e.g., "Is Tor already running?"
2358 - Adjust tor-spec to parameterize cell and key lengths. Now Ian
2359 Goldberg can prove things about our handshake protocol more
2361 - MaxConn has been obsolete for a while now. Document the ConnLimit
2362 config option, which is a *minimum* number of file descriptors
2363 that must be available else Tor refuses to start.
2364 - Apply Matt Ghali's --with-syslog-facility patch to ./configure
2365 if you log to syslog and want something other than LOG_DAEMON.
2366 - Make dirservers generate a separate "guard" flag to mean,
2367 "would make a good entry guard". Make clients parse it and vote
2368 on it. Not used by clients yet.
2369 - Implement --with-libevent-dir option to ./configure. Also, improve
2370 search techniques to find libevent, and use those for openssl too.
2371 - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
2372 - Only start testing reachability once we've established a
2373 circuit. This will make startup on dirservers less noisy.
2374 - Don't try to upload hidden service descriptors until we have
2375 established a circuit.
2376 - Fix the controller's "attachstream 0" command to treat conn like
2377 it just connected, doing address remapping, handling .exit and
2378 .onion idioms, and so on. Now we're more uniform in making sure
2379 that the controller hears about new and closing connections.
2382 Changes in version 0.1.1.12-alpha - 2006-01-11
2383 o Bugfixes on 0.1.1.x:
2384 - The fix to close duplicate server connections was closing all
2385 Tor client connections if they didn't establish a circuit
2386 quickly enough. Oops.
2387 - Fix minor memory issue (double-free) that happened on exit.
2389 o Bugfixes on 0.1.0.x:
2390 - Tor didn't warn when it failed to open a log file.
2393 Changes in version 0.1.1.11-alpha - 2006-01-10
2394 o Crashes in 0.1.1.x:
2395 - Include all the assert/crash fixes from 0.1.0.16.
2396 - If you start Tor and then quit very quickly, there were some
2397 races that tried to free things that weren't allocated yet.
2398 - Fix a rare memory stomp if you're running hidden services.
2399 - Fix segfault when specifying DirServer in config without nickname.
2400 - Fix a seg fault when you finish connecting to a server but at
2401 that moment you dump his server descriptor.
2402 - Extendcircuit and Attachstream controller commands would
2403 assert/crash if you don't give them enough arguments.
2404 - Fix an assert error when we're out of space in the connection_list
2405 and we try to post a hidden service descriptor (reported by weasel).
2406 - If you specify a relative torrc path and you set RunAsDaemon in
2407 your torrc, then it chdir()'s to the new directory. If you HUP,
2408 it tries to load the new torrc location, fails, and exits.
2409 The fix: no longer allow a relative path to torrc using -f.
2412 - Implement "entry guards": automatically choose a handful of entry
2413 nodes and stick with them for all circuits. Only pick new guards
2414 when the ones you have are unsuitable, and if the old guards
2415 become suitable again, switch back. This will increase security
2416 dramatically against certain end-point attacks. The EntryNodes
2417 config option now provides some hints about which entry guards you
2418 want to use most; and StrictEntryNodes means to only use those.
2419 - New directory logic: download by descriptor digest, not by
2420 fingerprint. Caches try to download all listed digests from
2421 authorities; clients try to download "best" digests from caches.
2422 This avoids partitioning and isolating attacks better.
2423 - Make the "stable" router flag in network-status be the median of
2424 the uptimes of running valid servers, and make clients pay
2425 attention to the network-status flags. Thus the cutoff adapts
2426 to the stability of the network as a whole, making IRC, IM, etc
2427 connections more reliable.
2430 - Tor servers with dynamic IP addresses were needing to wait 18
2431 hours before they could start doing reachability testing using
2432 the new IP address and ports. This is because they were using
2433 the internal descriptor to learn what to test, yet they were only
2434 rebuilding the descriptor once they decided they were reachable.
2435 - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
2436 to download certain server descriptors, throw them away, and then
2437 fetch them again after 30 minutes. Now mirrors throw away these
2438 server descriptors so clients can't get them.
2439 - We were leaving duplicate connections to other ORs open for a week,
2440 rather than closing them once we detect a duplicate. This only
2441 really affected authdirservers, but it affected them a lot.
2442 - Spread the authdirservers' reachability testing over the entire
2443 testing interval, so we don't try to do 500 TLS's at once every
2447 - If the network is down, and we try to connect to a conn because
2448 we have a circuit in mind, and we timeout (30 seconds) because the
2449 network never answers, we were expiring the circuit, but we weren't
2450 obsoleting the connection or telling the entry_guards functions.
2451 - Some Tor servers process billions of cells per day. These statistics
2452 need to be uint64_t's.
2453 - Check for integer overflows in more places, when adding elements
2454 to smartlists. This could possibly prevent a buffer overflow
2455 on malicious huge inputs. I don't see any, but I haven't looked
2457 - ReachableAddresses kept growing new "reject *:*" lines on every
2459 - When you "setconf log" via the controller, it should remove all
2460 logs. We were automatically adding back in a "log notice stdout".
2461 - Newly bootstrapped Tor networks couldn't establish hidden service
2462 circuits until they had nodes with high uptime. Be more tolerant.
2463 - We were marking servers down when they could not answer every piece
2464 of the directory request we sent them. This was far too harsh.
2465 - Fix the torify (tsocks) config file to not use Tor for localhost
2467 - Directory authorities now go to the proper authority when asking for
2468 a networkstatus, even when they want a compressed one.
2469 - Fix a harmless bug that was causing Tor servers to log
2470 "Got an end because of misc error, but we're not an AP. Closing."
2471 - Authorities were treating their own descriptor changes as cosmetic,
2472 meaning the descriptor available in the network-status and the
2473 descriptor that clients downloaded were different.
2474 - The OS X installer was adding a symlink for tor_resolve but
2475 the binary was called tor-resolve (reported by Thomas Hardly).
2476 - Workaround a problem with some http proxies where they refuse GET
2477 requests that specify "Content-Length: 0" (reported by Adrian).
2478 - Fix wrong log message when you add a "HiddenServiceNodes" config
2479 line without any HiddenServiceDir line (reported by Chris Thomas).
2482 - Write the TorVersion into the state file so we have a prayer of
2483 keeping forward and backward compatibility.
2484 - Revive the FascistFirewall config option rather than eliminating it:
2485 now it's a synonym for ReachableAddresses *:80,*:443.
2486 - Clients choose directory servers from the network status lists,
2487 not from their internal list of router descriptors. Now they can
2488 go to caches directly rather than needing to go to authorities
2490 - Directory authorities ignore router descriptors that have only
2491 cosmetic differences: do this for 0.1.0.x servers now too.
2492 - Add a new flag to network-status indicating whether the server
2493 can answer v2 directory requests too.
2494 - Authdirs now stop whining so loudly about bad descriptors that
2495 they fetch from other dirservers. So when there's a log complaint,
2496 it's for sure from a freshly uploaded descriptor.
2497 - Reduce memory requirements in our structs by changing the order
2499 - There used to be two ways to specify your listening ports in a
2500 server descriptor: on the "router" line and with a separate "ports"
2501 line. Remove support for the "ports" line.
2502 - New config option "AuthDirRejectUnlisted" for auth dirservers as
2503 a panic button: if we get flooded with unusable servers we can
2504 revert to only listing servers in the approved-routers file.
2505 - Auth dir servers can now mark a fingerprint as "!reject" or
2506 "!invalid" in the approved-routers file (as its nickname), to
2507 refuse descriptors outright or include them but marked as invalid.
2508 - Servers store bandwidth history across restarts/crashes.
2509 - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
2510 get a better idea of why their circuits failed. Not used yet.
2511 - Directory mirrors now cache up to 16 unrecognized network-status
2512 docs. Now we can add new authdirservers and they'll be cached too.
2513 - When picking a random directory, prefer non-authorities if any
2515 - New controller option "getinfo desc/all-recent" to fetch the
2516 latest server descriptor for every router that Tor knows about.
2519 Changes in version 0.1.0.16 - 2006-01-02
2520 o Crash bugfixes on 0.1.0.x:
2521 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
2522 corrupting the heap, losing FDs, or crashing when we need to resize
2523 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
2524 - It turns out sparc64 platforms crash on unaligned memory access
2525 too -- so detect and avoid this.
2526 - Handle truncated compressed data correctly (by detecting it and
2528 - Fix possible-but-unlikely free(NULL) in control.c.
2529 - When we were closing connections, there was a rare case that
2530 stomped on memory, triggering seg faults and asserts.
2531 - Avoid potential infinite recursion when building a descriptor. (We
2532 don't know that it ever happened, but better to fix it anyway.)
2533 - We were neglecting to unlink marked circuits from soon-to-close OR
2534 connections, which caused some rare scribbling on freed memory.
2535 - Fix a memory stomping race bug when closing the joining point of two
2536 rendezvous circuits.
2537 - Fix an assert in time parsing found by Steven Murdoch.
2539 o Other bugfixes on 0.1.0.x:
2540 - When we're doing reachability testing, provide more useful log
2541 messages so the operator knows what to expect.
2542 - Do not check whether DirPort is reachable when we are suppressing
2543 advertising it because of hibernation.
2544 - When building with -static or on Solaris, we sometimes needed -ldl.
2545 - When we're deciding whether a stream has enough circuits around
2546 that can handle it, count the freshly dirty ones and not the ones
2547 that are so dirty they won't be able to handle it.
2548 - When we're expiring old circuits, we had a logic error that caused
2549 us to close new rendezvous circuits rather than old ones.
2550 - Give a more helpful log message when you try to change ORPort via
2551 the controller: you should upgrade Tor if you want that to work.
2552 - We were failing to parse Tor versions that start with "Tor ".
2553 - Tolerate faulty streams better: when a stream fails for reason
2554 exitpolicy, stop assuming that the router is lying about his exit
2555 policy. When a stream fails for reason misc, allow it to retry just
2556 as if it was resolvefailed. When a stream has failed three times,
2557 reset its failure count so we can try again and get all three tries.
2560 Changes in version 0.1.1.10-alpha - 2005-12-11
2561 o Correctness bugfixes on 0.1.0.x:
2562 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
2563 corrupting the heap, losing FDs, or crashing when we need to resize
2564 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
2565 - Stop doing the complex voodoo overkill checking for insecure
2566 Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
2567 - When we were closing connections, there was a rare case that
2568 stomped on memory, triggering seg faults and asserts.
2569 - We were neglecting to unlink marked circuits from soon-to-close OR
2570 connections, which caused some rare scribbling on freed memory.
2571 - When we're deciding whether a stream has enough circuits around
2572 that can handle it, count the freshly dirty ones and not the ones
2573 that are so dirty they won't be able to handle it.
2574 - Recover better from TCP connections to Tor servers that are
2575 broken but don't tell you (it happens!); and rotate TLS
2576 connections once a week.
2577 - When we're expiring old circuits, we had a logic error that caused
2578 us to close new rendezvous circuits rather than old ones.
2579 - Fix a scary-looking but apparently harmless bug where circuits
2580 would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
2581 servers, and never switch to state CIRCUIT_STATE_OPEN.
2582 - When building with -static or on Solaris, we sometimes needed to
2584 - Give a useful message when people run Tor as the wrong user,
2585 rather than telling them to start chowning random directories.
2586 - We were failing to inform the controller about new .onion streams.
2588 o Security bugfixes on 0.1.0.x:
2589 - Refuse server descriptors if the fingerprint line doesn't match
2590 the included identity key. Tor doesn't care, but other apps (and
2591 humans) might actually be trusting the fingerprint line.
2592 - We used to kill the circuit when we receive a relay command we
2593 don't recognize. Now we just drop it.
2594 - Start obeying our firewall options more rigorously:
2595 . If we can't get to a dirserver directly, try going via Tor.
2596 . Don't ever try to connect (as a client) to a place our
2597 firewall options forbid.
2598 . If we specify a proxy and also firewall options, obey the
2599 firewall options even when we're using the proxy: some proxies
2600 can only proxy to certain destinations.
2601 - Fix a bug found by Lasse Overlier: when we were making internal
2602 circuits (intended to be cannibalized later for rendezvous and
2603 introduction circuits), we were picking them so that they had
2604 useful exit nodes. There was no need for this, and it actually
2605 aids some statistical attacks.
2606 - Start treating internal circuits and exit circuits separately.
2607 It's important to keep them separate because internal circuits
2608 have their last hops picked like middle hops, rather than like
2609 exit hops. So exiting on them will break the user's expectations.
2611 o Bugfixes on 0.1.1.x:
2612 - Take out the mis-feature where we tried to detect IP address
2613 flapping for people with DynDNS, and chose not to upload a new
2614 server descriptor sometimes.
2615 - Try to be compatible with OpenSSL 0.9.6 again.
2616 - Log fix: when the controller is logging about .onion addresses,
2617 sometimes it didn't include the ".onion" part of the address.
2618 - Don't try to modify options->DirServers internally -- if the
2619 user didn't specify any, just add the default ones directly to
2620 the trusted dirserver list. This fixes a bug where people running
2621 controllers would use SETCONF on some totally unrelated config
2622 option, and Tor would start yelling at them about changing their
2624 - Let the controller's redirectstream command specify a port, in
2625 case the controller wants to change that too.
2626 - When we requested a pile of server descriptors, we sometimes
2627 accidentally launched a duplicate request for the first one.
2628 - Bugfix for trackhostexits: write down the fingerprint of the
2629 chosen exit, not its nickname, because the chosen exit might not
2631 - When parsing foo.exit, if foo is unknown, and we are leaving
2632 circuits unattached, set the chosen_exit field and leave the
2633 address empty. This matters because controllers got confused
2635 - Directory authorities no longer try to download server
2636 descriptors that they know they will reject.
2638 o Features and updates:
2639 - Replace balanced trees with hash tables: this should make stuff
2640 significantly faster.
2641 - Resume using the AES counter-mode implementation that we ship,
2642 rather than OpenSSL's. Ours is significantly faster.
2643 - Many other CPU and memory improvements.
2644 - Add a new config option FastFirstHopPK (on by default) so clients
2645 do a trivial crypto handshake for their first hop, since TLS has
2646 already taken care of confidentiality and authentication.
2647 - Add a new config option TestSocks so people can see if their
2648 applications are using socks4, socks4a, socks5-with-ip, or
2649 socks5-with-hostname. This way they don't have to keep mucking
2650 with tcpdump and wondering if something got cached somewhere.
2651 - Warn when listening on a public address for socks. I suspect a
2652 lot of people are setting themselves up as open socks proxies,
2653 and they have no idea that jerks on the Internet are using them,
2654 since they simply proxy the traffic into the Tor network.
2655 - Add "private:*" as an alias in configuration for policies. Now
2656 you can simplify your exit policy rather than needing to list
2657 every single internal or nonroutable network space.
2658 - Add a new controller event type that allows controllers to get
2659 all server descriptors that were uploaded to a router in its role
2660 as authoritative dirserver.
2661 - Start shipping socks-extensions.txt, tor-doc-unix.html,
2662 tor-doc-server.html, and stylesheet.css in the tarball.
2663 - Stop shipping tor-doc.html in the tarball.
2666 Changes in version 0.1.1.9-alpha - 2005-11-15
2667 o Usability improvements:
2668 - Start calling it FooListenAddress rather than FooBindAddress,
2669 since few of our users know what it means to bind an address
2671 - Reduce clutter in server logs. We're going to try to make
2672 them actually usable now. New config option ProtocolWarnings that
2673 lets you hear about how _other Tors_ are breaking the protocol. Off
2675 - Divide log messages into logging domains. Once we put some sort
2676 of interface on this, it will let people looking at more verbose
2677 log levels specify the topics they want to hear more about.
2678 - Make directory servers return better http 404 error messages
2679 instead of a generic "Servers unavailable".
2680 - Check for even more Windows version flags when writing the platform
2681 string in server descriptors, and note any we don't recognize.
2682 - Clean up more of the OpenSSL memory when exiting, so we can detect
2683 memory leaks better.
2684 - Make directory authorities be non-versioning, non-naming by
2685 default. Now we can add new directory servers without requiring
2686 their operators to pay close attention.
2687 - When logging via syslog, include the pid whenever we provide
2688 a log entry. Suggested by Todd Fries.
2690 o Performance improvements:
2691 - Directory servers now silently throw away new descriptors that
2692 haven't changed much if the timestamps are similar. We do this to
2693 tolerate older Tor servers that upload a new descriptor every 15
2694 minutes. (It seemed like a good idea at the time.)
2695 - Inline bottleneck smartlist functions; use fast versions by default.
2696 - Add a "Map from digest to void*" abstraction digestmap_t so we
2697 can do less hex encoding/decoding. Use it in router_get_by_digest()
2698 to resolve a performance bottleneck.
2699 - Allow tor_gzip_uncompress to extract as much as possible from
2700 truncated compressed data. Try to extract as many
2701 descriptors as possible from truncated http responses (when
2702 DIR_PURPOSE_FETCH_ROUTERDESC).
2703 - Make circ->onionskin a pointer, not a static array. moria2 was using
2704 125000 circuit_t's after it had been up for a few weeks, which
2705 translates to 20+ megs of wasted space.
2706 - The private half of our EDH handshake keys are now chosen out
2707 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
2709 o Security improvements:
2710 - Start making directory caches retain old routerinfos, so soon
2711 clients can start asking by digest of descriptor rather than by
2712 fingerprint of server.
2713 - Add half our entropy from RAND_poll in OpenSSL. This knows how
2714 to use egd (if present), openbsd weirdness (if present), vms/os2
2715 weirdness (if we ever port there), and more in the future.
2717 o Bugfixes on 0.1.0.x:
2718 - Do round-robin writes of at most 16 kB per write. This might be
2719 more fair on loaded Tor servers, and it might resolve our Windows
2720 crash bug. It might also slow things down.
2721 - Our TLS handshakes were generating a single public/private
2722 keypair for the TLS context, rather than making a new one for
2723 each new connections. Oops. (But we were still rotating them
2724 periodically, so it's not so bad.)
2725 - When we were cannibalizing a circuit with a particular exit
2726 node in mind, we weren't checking to see if that exit node was
2727 already present earlier in the circuit. Oops.
2728 - When a Tor server's IP changes (e.g. from a dyndns address),
2729 upload a new descriptor so clients will learn too.
2730 - Really busy servers were keeping enough circuits open on stable
2731 connections that they were wrapping around the circuit_id
2732 space. (It's only two bytes.) This exposed a bug where we would
2733 feel free to reuse a circuit_id even if it still exists but has
2734 been marked for close. Try to fix this bug. Some bug remains.
2735 - If we would close a stream early (e.g. it asks for a .exit that
2736 we know would refuse it) but the LeaveStreamsUnattached config
2737 option is set by the controller, then don't close it.
2739 o Bugfixes on 0.1.1.8-alpha:
2740 - Fix a big pile of memory leaks, some of them serious.
2741 - Do not try to download a routerdesc if we would immediately reject
2743 - Resume inserting a newline between all router descriptors when
2744 generating (old style) signed directories, since our spec says
2746 - When providing content-type application/octet-stream for
2747 server descriptors using .z, we were leaving out the
2748 content-encoding header. Oops. (Everything tolerated this just
2749 fine, but that doesn't mean we need to be part of the problem.)
2750 - Fix a potential seg fault in getconf and getinfo using version 1
2751 of the controller protocol.
2752 - Avoid crash: do not check whether DirPort is reachable when we
2753 are suppressing it because of hibernation.
2754 - Make --hash-password not crash on exit.
2757 Changes in version 0.1.1.8-alpha - 2005-10-07
2758 o New features (major):
2759 - Clients don't download or use the directory anymore. Now they
2760 download and use network-statuses from the trusted dirservers,
2761 and fetch individual server descriptors as needed from mirrors.
2762 See dir-spec.txt for all the gory details.
2763 - Be more conservative about whether to advertise our DirPort.
2764 The main change is to not advertise if we're running at capacity
2765 and either a) we could hibernate or b) our capacity is low and
2766 we're using a default DirPort.
2767 - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
2769 o New features (minor):
2770 - Try to be smart about when to retry network-status and
2771 server-descriptor fetches. Still needs some tuning.
2772 - Stop parsing, storing, or using running-routers output (but
2773 mirrors still cache and serve it).
2774 - Consider a threshold of versioning dirservers (dirservers who have
2775 an opinion about which Tor versions are still recommended) before
2776 deciding whether to warn the user that he's obsolete.
2777 - Dirservers can now reject/invalidate by key and IP, with the
2778 config options "AuthDirInvalid" and "AuthDirReject". This is
2779 useful since currently we automatically list servers as running
2780 and usable even if we know they're jerks.
2781 - Provide dire warnings to any users who set DirServer; move it out
2782 of torrc.sample and into torrc.complete.
2783 - Add MyFamily to torrc.sample in the server section.
2784 - Add nicknames to the DirServer line, so we can refer to them
2785 without requiring all our users to memorize their IP addresses.
2786 - When we get an EOF or a timeout on a directory connection, note
2787 how many bytes of serverdesc we are dropping. This will help
2788 us determine whether it is smart to parse incomplete serverdesc
2790 - Add a new function to "change pseudonyms" -- that is, to stop
2791 using any currently-dirty circuits for new streams, so we don't
2792 link new actions to old actions. Currently it's only called on
2793 HUP (or SIGNAL RELOAD).
2794 - On sighup, if UseHelperNodes changed to 1, use new circuits.
2795 - Start using RAND_bytes rather than RAND_pseudo_bytes from
2796 OpenSSL. Also, reseed our entropy every hour, not just at
2797 startup. And entropy in 512-bit chunks, not 160-bit chunks.
2799 o Fixes on 0.1.1.7-alpha:
2800 - Nobody ever implemented EVENT_ADDRMAP for control protocol
2801 version 0, so don't let version 0 controllers ask for it.
2802 - If you requested something with too many newlines via the
2803 v1 controller protocol, you could crash tor.
2804 - Fix a number of memory leaks, including some pretty serious ones.
2805 - Re-enable DirPort testing again, so Tor servers will be willing
2806 to advertise their DirPort if it's reachable.
2807 - On TLS handshake, only check the other router's nickname against
2808 its expected nickname if is_named is set.
2810 o Fixes forward-ported from 0.1.0.15:
2811 - Don't crash when we don't have any spare file descriptors and we
2812 try to spawn a dns or cpu worker.
2813 - Make the numbers in read-history and write-history into uint64s,
2814 so they don't overflow and publish negatives in the descriptor.
2817 - For the OS X package's modified privoxy config file, comment
2818 out the "logfile" line so we don't log everything passed
2820 - We were whining about using socks4 or socks5-with-local-lookup
2821 even when it's an IP in the "virtual" range we designed exactly
2823 - We were leaking some memory every time the client changes IPs.
2824 - Never call free() on tor_malloc()d memory. This will help us
2825 use dmalloc to detect memory leaks.
2826 - Check for named servers when looking them up by nickname;
2827 warn when we'recalling a non-named server by its nickname;
2828 don't warn twice about the same name.
2829 - Try to list MyFamily elements by key, not by nickname, and warn
2830 if we've not heard of the server.
2831 - Make windows platform detection (uname equivalent) smarter.
2832 - It turns out sparc64 doesn't like unaligned access either.
2835 Changes in version 0.1.0.15 - 2005-09-23
2836 o Bugfixes on 0.1.0.x:
2837 - Reject ports 465 and 587 (spam targets) in default exit policy.
2838 - Don't crash when we don't have any spare file descriptors and we
2839 try to spawn a dns or cpu worker.
2840 - Get rid of IgnoreVersion undocumented config option, and make us
2841 only warn, never exit, when we're running an obsolete version.
2842 - Don't try to print a null string when your server finds itself to
2843 be unreachable and the Address config option is empty.
2844 - Make the numbers in read-history and write-history into uint64s,
2845 so they don't overflow and publish negatives in the descriptor.
2846 - Fix a minor memory leak in smartlist_string_remove().
2847 - We were only allowing ourselves to upload a server descriptor at
2848 most every 20 minutes, even if it changed earlier than that.
2849 - Clean up log entries that pointed to old URLs.
2852 Changes in version 0.1.1.7-alpha - 2005-09-14
2853 o Fixes on 0.1.1.6-alpha:
2854 - Exit servers were crashing when people asked them to make a
2855 connection to an address not in their exit policy.
2856 - Looking up a non-existent stream for a v1 control connection would
2858 - Fix a seg fault if we ask a dirserver for a descriptor by
2859 fingerprint but he doesn't know about him.
2860 - SETCONF was appending items to linelists, not clearing them.
2861 - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
2862 out and refuse the setconf if it would fail.
2863 - Downgrade the dirserver log messages when whining about
2867 - Add Peter Palfrader's check-tor script to tor/contrib/
2868 It lets you easily check whether a given server (referenced by
2869 nickname) is reachable by you.
2870 - Numerous changes to move towards client-side v2 directories. Not
2874 - If the user gave tor an odd number of command-line arguments,
2875 we were silently ignoring the last one. Now we complain and fail.
2876 [This wins the oldest-bug prize -- this bug has been present since
2877 November 2002, as released in Tor 0.0.0.]
2878 - Do not use unaligned memory access on alpha, mips, or mipsel.
2879 It *works*, but is very slow, so we treat them as if it doesn't.
2880 - Retry directory requests if we fail to get an answer we like
2881 from a given dirserver (we were retrying before, but only if
2882 we fail to connect).
2883 - When writing the RecommendedVersions line, sort them first.
2884 - When the client asked for a rendezvous port that the hidden
2885 service didn't want to provide, we were sending an IP address
2886 back along with the end cell. Fortunately, it was zero. But stop
2888 - Correct "your server is reachable" log entries to indicate that
2889 it was self-testing that told us so.
2892 Changes in version 0.1.1.6-alpha - 2005-09-09
2893 o Fixes on 0.1.1.5-alpha:
2894 - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
2895 - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
2896 - Fix bug with tor_memmem finding a match at the end of the string.
2897 - Make unit tests run without segfaulting.
2898 - Resolve some solaris x86 compile warnings.
2899 - Handle duplicate lines in approved-routers files without warning.
2900 - Fix bug where as soon as a server refused any requests due to his
2901 exit policy (e.g. when we ask for localhost and he tells us that's
2902 127.0.0.1 and he won't do it), we decided he wasn't obeying his
2903 exit policy using him for any exits.
2904 - Only do openssl hardware accelerator stuff if openssl version is
2907 o New controller features/fixes:
2908 - Add a "RESETCONF" command so you can set config options like
2909 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
2910 a config option in the torrc with no value, then it clears it
2911 entirely (rather than setting it to its default).
2912 - Add a "GETINFO config-file" to tell us where torrc is.
2913 - Avoid sending blank lines when GETINFO replies should be empty.
2914 - Add a QUIT command for the controller (for using it manually).
2915 - Fix a bug in SAVECONF that was adding default dirservers and
2916 other redundant entries to the torrc file.
2918 o Start on the new directory design:
2919 - Generate, publish, cache, serve new network-status format.
2920 - Publish individual descriptors (by fingerprint, by "all", and by
2922 - Publish client and server recommended versions separately.
2923 - Allow tor_gzip_uncompress() to handle multiple concatenated
2924 compressed strings. Serve compressed groups of router
2925 descriptors. The compression logic here could be more
2927 - Distinguish v1 authorities (all currently trusted directories)
2928 from v2 authorities (all trusted directories).
2929 - Change DirServers config line to note which dirs are v1 authorities.
2930 - Add configuration option "V1AuthoritativeDirectory 1" which
2931 moria1, moria2, and tor26 should set.
2932 - Remove option when getting directory cache to see whether they
2933 support running-routers; they all do now. Replace it with one
2934 to see whether caches support v2 stuff.
2937 - Dirservers now do their own external reachability testing of each
2938 Tor server, and only list them as running if they've been found to
2939 be reachable. We also send back warnings to the server's logs if
2940 it uploads a descriptor that we already believe is unreachable.
2941 - Implement exit enclaves: if we know an IP address for the
2942 destination, and there's a running Tor server at that address
2943 which allows exit to the destination, then extend the circuit to
2944 that exit first. This provides end-to-end encryption and end-to-end
2945 authentication. Also, if the user wants a .exit address or enclave,
2946 use 4 hops rather than 3, and cannibalize a general circ for it
2948 - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
2949 controller. Also, rotate dns and cpu workers if the controller
2950 changes options that will affect them; and initialize the dns
2951 worker cache tree whether or not we start out as a server.
2952 - Only upload a new server descriptor when options change, 18
2953 hours have passed, uptime is reset, or bandwidth changes a lot.
2954 - Check [X-]Forwarded-For headers in HTTP requests when generating
2955 log messages. This lets people run dirservers (and caches) behind
2956 Apache but still know which IP addresses are causing warnings.
2958 o Config option changes:
2959 - Replace (Fascist)Firewall* config options with a new
2960 ReachableAddresses option that understands address policies.
2961 For example, "ReachableAddresses *:80,*:443"
2962 - Get rid of IgnoreVersion undocumented config option, and make us
2963 only warn, never exit, when we're running an obsolete version.
2964 - Make MonthlyAccountingStart config option truly obsolete now.
2967 - Reject ports 465 and 587 in the default exit policy, since
2968 people have started using them for spam too.
2969 - It turns out we couldn't bootstrap a network since we added
2970 reachability detection in 0.1.0.1-rc. Good thing the Tor network
2971 has never gone down. Add an AssumeReachable config option to let
2972 servers and dirservers bootstrap. When we're trying to build a
2973 high-uptime or high-bandwidth circuit but there aren't enough
2974 suitable servers, try being less picky rather than simply failing.
2975 - Our logic to decide if the OR we connected to was the right guy
2976 was brittle and maybe open to a mitm for unverified routers.
2977 - We weren't cannibalizing circuits correctly for
2978 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
2979 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
2980 build those from scratch. This should make hidden services faster.
2981 - Predict required circuits better, with an eye toward making hidden
2982 services faster on the service end.
2983 - Retry streams if the exit node sends back a 'misc' failure. This
2984 should result in fewer random failures. Also, after failing
2985 from resolve failed or misc, reset the num failures, so we give
2986 it a fair shake next time we try.
2987 - Clean up the rendezvous warn log msgs, and downgrade some to info.
2988 - Reduce severity on logs about dns worker spawning and culling.
2989 - When we're shutting down and we do something like try to post a
2990 server descriptor or rendezvous descriptor, don't complain that
2991 we seem to be unreachable. Of course we are, we're shutting down.
2992 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
2993 We don't use them yet, but maybe one day our DNS resolver will be
2994 able to discover them.
2995 - Make ContactInfo mandatory for authoritative directory servers.
2996 - Require server descriptors to list IPv4 addresses -- hostnames
2997 are no longer allowed. This also fixes some potential security
2998 problems with people providing hostnames as their address and then
2999 preferentially resolving them to partition users.
3000 - Change log line for unreachability to explicitly suggest /etc/hosts
3001 as the culprit. Also make it clearer what IP address and ports we're
3002 testing for reachability.
3003 - Put quotes around user-supplied strings when logging so users are
3004 more likely to realize if they add bad characters (like quotes)
3006 - Let auth dir servers start without specifying an Address config
3008 - Make unit tests (and other invocations that aren't the real Tor)
3009 run without launching listeners, creating subdirectories, and so on.
3012 Changes in version 0.1.1.5-alpha - 2005-08-08
3013 o Bugfixes included in 0.1.0.14.
3015 o Bugfixes on 0.1.0.x:
3016 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
3017 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
3018 it would silently using ignore the 6668.
3021 Changes in version 0.1.0.14 - 2005-08-08
3022 o Bugfixes on 0.1.0.x:
3023 - Fix the other half of the bug with crypto handshakes
3025 - Fix an assert trigger if you send a 'signal term' via the
3026 controller when it's listening for 'event info' messages.
3029 Changes in version 0.1.1.4-alpha - 2005-08-04
3030 o Bugfixes included in 0.1.0.13.
3033 - Improve tor_gettimeofday() granularity on windows.
3034 - Make clients regenerate their keys when their IP address changes.
3035 - Implement some more GETINFO goodness: expose helper nodes, config
3036 options, getinfo keys.
3039 Changes in version 0.1.0.13 - 2005-08-04
3040 o Bugfixes on 0.1.0.x:
3041 - Fix a critical bug in the security of our crypto handshakes.
3042 - Fix a size_t underflow in smartlist_join_strings2() that made
3043 it do bad things when you hand it an empty smartlist.
3044 - Fix Windows installer to ship Tor license (thanks to Aphex for
3045 pointing out this oversight) and put a link to the doc directory
3047 - Explicitly set no-unaligned-access for sparc: it turns out the
3048 new gcc's let you compile broken code, but that doesn't make it
3052 Changes in version 0.1.1.3-alpha - 2005-07-23
3053 o Bugfixes on 0.1.1.2-alpha:
3054 - Fix a bug in handling the controller's "post descriptor"
3056 - Fix several bugs in handling the controller's "extend circuit"
3058 - Fix a bug in handling the controller's "stream status" event.
3059 - Fix an assert failure if we have a controller listening for
3060 circuit events and we go offline.
3061 - Re-allow hidden service descriptors to publish 0 intro points.
3062 - Fix a crash when generating your hidden service descriptor if
3063 you don't have enough intro points already.
3065 o New features on 0.1.1.2-alpha:
3066 - New controller function "getinfo accounting", to ask how
3067 many bytes we've used in this time period.
3068 - Experimental support for helper nodes: a lot of the risk from
3069 a small static adversary comes because users pick new random
3070 nodes every time they rebuild a circuit. Now users will try to
3071 stick to the same small set of entry nodes if they can. Not
3072 enabled by default yet.
3074 o Bugfixes on 0.1.0.12:
3075 - If you're an auth dir server, always publish your dirport,
3076 even if you haven't yet found yourself to be reachable.
3077 - Fix a size_t underflow in smartlist_join_strings2() that made
3078 it do bad things when you hand it an empty smartlist.
3081 Changes in version 0.1.0.12 - 2005-07-18
3082 o New directory servers:
3083 - tor26 has changed IP address.
3085 o Bugfixes on 0.1.0.x:
3086 - Fix a possible double-free in tor_gzip_uncompress().
3087 - When --disable-threads is set, do not search for or link against
3089 - Don't trigger an assert if an authoritative directory server
3090 claims its dirport is 0.
3091 - Fix bug with removing Tor as an NT service: some people were
3092 getting "The service did not return an error." Thanks to Matt
3096 Changes in version 0.1.1.2-alpha - 2005-07-15
3097 o New directory servers:
3098 - tor26 has changed IP address.
3100 o Bugfixes on 0.1.0.x, crashes/leaks:
3101 - Port the servers-not-obeying-their-exit-policies fix from
3103 - Fix an fd leak in start_daemon().
3104 - On Windows, you can't always reopen a port right after you've
3105 closed it. So change retry_listeners() to only close and re-open
3106 ports that have changed.
3107 - Fix a possible double-free in tor_gzip_uncompress().
3109 o Bugfixes on 0.1.0.x, usability:
3110 - When tor_socketpair() fails in Windows, give a reasonable
3111 Windows-style errno back.
3112 - Let people type "tor --install" as well as "tor -install" when
3114 want to make it an NT service.
3115 - NT service patch from Matt Edman to improve error messages.
3116 - When the controller asks for a config option with an abbreviated
3117 name, give the full name in our response.
3118 - Correct the man page entry on TrackHostExitsExpire.
3119 - Looks like we were never delivering deflated (i.e. compressed)
3120 running-routers lists, even when asked. Oops.
3121 - When --disable-threads is set, do not search for or link against
3124 o Bugfixes on 0.1.1.x:
3125 - Fix a seg fault with autodetecting which controller version is
3129 - New hidden service descriptor format: put a version in it, and
3130 let people specify introduction/rendezvous points that aren't
3131 in "the directory" (which is subjective anyway).
3132 - Allow the DEBUG controller event to work again. Mark certain log
3133 entries as "don't tell this to controllers", so we avoid cycles.
3136 Changes in version 0.1.0.11 - 2005-06-30
3137 o Bugfixes on 0.1.0.x:
3138 - Fix major security bug: servers were disregarding their
3139 exit policies if clients behaved unexpectedly.
3140 - Make OS X init script check for missing argument, so we don't
3141 confuse users who invoke it incorrectly.
3142 - Fix a seg fault in "tor --hash-password foo".
3143 - The MAPADDRESS control command was broken.
3146 Changes in version 0.1.1.1-alpha - 2005-06-29
3148 - Make OS X init script check for missing argument, so we don't
3149 confuse users who invoke it incorrectly.
3150 - Fix a seg fault in "tor --hash-password foo".
3151 - Fix a possible way to DoS dirservers.
3152 - When we complain that your exit policy implicitly allows local or
3153 private address spaces, name them explicitly so operators can
3155 - Make the log message less scary when all the dirservers are
3156 temporarily unreachable.
3157 - We were printing the number of idle dns workers incorrectly when
3161 - Revised controller protocol (version 1) that uses ascii rather
3162 than binary. Add supporting libraries in python and java so you
3163 can use the controller from your applications without caring how
3165 - Spiffy new support for crypto hardware accelerators. Can somebody
3169 Changes in version 0.0.9.10 - 2005-06-16
3170 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
3171 - Refuse relay cells that claim to have a length larger than the
3172 maximum allowed. This prevents a potential attack that could read
3173 arbitrary memory (e.g. keys) from an exit server's process
3177 Changes in version 0.1.0.10 - 2005-06-14
3178 o Allow a few EINVALs from libevent before dying. Warn on kqueue with
3179 libevent before 1.1a.
3182 Changes in version 0.1.0.9-rc - 2005-06-09
3184 - Reset buf->highwater every time buf_shrink() is called, not just on
3185 a successful shrink. This was causing significant memory bloat.
3186 - Fix buffer overflow when checking hashed passwords.
3187 - Security fix: if seeding the RNG on Win32 fails, quit.
3188 - Allow seeding the RNG on Win32 even when you're not running as
3190 - Disable threading on Solaris too. Something is wonky with it,
3191 cpuworkers, and reentrant libs.
3192 - Reenable the part of the code that tries to flush as soon as an
3193 OR outbuf has a full TLS record available. Perhaps this will make
3194 OR outbufs not grow as huge except in rare cases, thus saving lots
3195 of CPU time plus memory.
3196 - Reject malformed .onion addresses rather then passing them on as
3197 normal web requests.
3198 - Adapt patch from Adam Langley: fix possible memory leak in
3199 tor_lookup_hostname().
3200 - Initialize libevent later in the startup process, so the logs are
3201 already established by the time we start logging libevent warns.
3202 - Use correct errno on win32 if libevent fails.
3203 - Check and warn about known-bad/slow libevent versions.
3204 - Pay more attention to the ClientOnly config option.
3205 - Have torctl.in/tor.sh.in check for location of su binary (needed
3207 - Correct/add man page entries for LongLivedPorts, ExitPolicy,
3208 KeepalivePeriod, ClientOnly, NoPublish, HttpProxy, HttpsProxy,
3209 HttpProxyAuthenticator
3210 - Stop warning about sigpipes in the logs. We're going to
3211 pretend that getting these occassionally is normal and fine.
3212 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in
3214 installer screens; and don't put stuff into StartupItems unless
3215 the user asks you to.
3216 - Require servers that use the default dirservers to have public IP
3217 addresses. We have too many servers that are configured with private
3218 IPs and their admins never notice the log entries complaining that
3219 their descriptors are being rejected.
3220 - Add OSX uninstall instructions. An actual uninstall script will
3224 Changes in version 0.1.0.8-rc - 2005-05-23
3226 - It turns out that kqueue on OS X 10.3.9 was causing kernel
3227 panics. Disable kqueue on all OS X Tors.
3228 - Fix RPM: remove duplicate line accidentally added to the rpm
3230 - Disable threads on openbsd too, since its gethostaddr is not
3232 - Tolerate libevent 0.8 since it still works, even though it's
3234 - Enable building on Red Hat 9.0 again.
3235 - Allow the middle hop of the testing circuit to be running any
3236 version, now that most of them have the bugfix to let them connect
3237 to unknown servers. This will allow reachability testing to work
3238 even when 0.0.9.7-0.0.9.9 become obsolete.
3239 - Handle relay cells with rh.length too large. This prevents
3240 a potential attack that could read arbitrary memory (maybe even
3241 keys) from the exit server's process.
3242 - We screwed up the dirport reachability testing when we don't yet
3243 have a cached version of the directory. Hopefully now fixed.
3244 - Clean up router_load_single_router() (used by the controller),
3245 so it doesn't seg fault on error.
3246 - Fix a minor memory leak when somebody establishes an introduction
3247 point at your Tor server.
3248 - If a socks connection ends because read fails, don't warn that
3249 you're not sending a socks reply back.
3252 - Add HttpProxyAuthenticator config option too, that works like
3253 the HttpsProxyAuthenticator config option.
3254 - Encode hashed controller passwords in hex instead of base64,
3255 to make it easier to write controllers.
3258 Changes in version 0.1.0.7-rc - 2005-05-17
3260 - Fix a bug in the OS X package installer that prevented it from
3261 installing on Tiger.
3262 - Fix a script bug in the OS X package installer that made it
3263 complain during installation.
3264 - Find libevent even if it's hiding in /usr/local/ and your
3265 CFLAGS and LDFLAGS don't tell you to look there.
3266 - Be able to link with libevent as a shared library (the default
3267 after 1.0d), even if it's hiding in /usr/local/lib and even
3268 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
3269 assuming you're running gcc. Otherwise fail and give a useful
3271 - Fix a bug in the RPM packager: set home directory for _tor to
3272 something more reasonable when first installing.
3273 - Free a minor amount of memory that is still reachable on exit.
3276 Changes in version 0.1.0.6-rc - 2005-05-14
3278 - Implement --disable-threads configure option. Disable threads on
3279 netbsd by default, because it appears to have no reentrant resolver
3281 - Apple's OS X 10.4.0 ships with a broken kqueue. The new libevent
3282 release (1.1) detects and disables kqueue if it's broken.
3283 - Append default exit policy before checking for implicit internal
3284 addresses. Now we don't log a bunch of complaints on startup
3285 when using the default exit policy.
3286 - Some people were putting "Address " in their torrc, and they had
3287 a buggy resolver that resolved " " to 0.0.0.0. Oops.
3288 - If DataDir is ~/.tor, and that expands to /.tor, then default to
3289 LOCALSTATEDIR/tor instead.
3290 - Fix fragmented-message bug in TorControl.py.
3291 - Resolve a minor bug which would prevent unreachable dirports
3292 from getting suppressed in the published descriptor.
3293 - When the controller gave us a new descriptor, we weren't resolving
3294 it immediately, so Tor would think its address was 0.0.0.0 until
3295 we fetched a new directory.
3296 - Fix an uppercase/lowercase case error in suppressing a bogus
3297 libevent warning on some Linuxes.
3300 - Begin scrubbing sensitive strings from logs by default. Turn off
3301 the config option SafeLogging if you need to do debugging.
3302 - Switch to a new buffer management algorithm, which tries to avoid
3303 reallocing and copying quite as much. In first tests it looks like
3304 it uses *more* memory on average, but less cpu.
3305 - First cut at support for "create-fast" cells. Clients can use
3306 these when extending to their first hop, since the TLS already
3307 provides forward secrecy and authentication. Not enabled on
3309 - When dirservers refuse a router descriptor, we now log its
3310 contactinfo, platform, and the poster's IP address.
3311 - Call tor_free_all instead of connections_free_all after forking, to
3312 save memory on systems that need to fork.
3313 - Whine at you if you're a server and you don't set your contactinfo.
3314 - Implement --verify-config command-line option to check if your torrc
3315 is valid without actually launching Tor.
3316 - Rewrite address "serifos.exit" to "localhost.serifos.exit"
3317 rather than just rejecting it.
3320 Changes in version 0.1.0.5-rc - 2005-04-27
3322 - Stop trying to print a null pointer if an OR conn fails because
3323 we didn't like its cert.
3325 - Switch our internal buffers implementation to use a ring buffer,
3326 to hopefully improve performance for fast servers a lot.
3327 - Add HttpsProxyAuthenticator support (basic auth only), based
3328 on patch from Adam Langley.
3329 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
3330 the fast servers that have been joining lately.
3331 - Give hidden service accesses extra time on the first attempt,
3332 since 60 seconds is often only barely enough. This might improve
3334 - Improve performance for dirservers: stop re-parsing the whole
3335 directory every time you regenerate it.
3336 - Add more debugging info to help us find the weird dns freebsd
3337 pthreads bug; cleaner debug messages to help track future issues.
3340 Changes in version 0.0.9.9 - 2005-04-23
3341 o Bugfixes on 0.0.9.x:
3342 - If unofficial Tor clients connect and send weird TLS certs, our
3343 Tor server triggers an assert. This release contains a minimal
3344 backport from the broader fix that we put into 0.1.0.4-rc.
3347 Changes in version 0.1.0.4-rc - 2005-04-23
3349 - If unofficial Tor clients connect and send weird TLS certs, our
3350 Tor server triggers an assert. Stop asserting, and start handling
3351 TLS errors better in other situations too.
3352 - When the controller asks us to tell it about all the debug-level
3353 logs, it turns out we were generating debug-level logs while
3354 telling it about them, which turns into a bad loop. Now keep
3355 track of whether you're sending a debug log to the controller,
3356 and don't log when you are.
3357 - Fix the "postdescriptor" feature of the controller interface: on
3358 non-complete success, only say "done" once.
3360 - Clients are now willing to load balance over up to 2mB, not 1mB,
3361 of advertised bandwidth capacity.
3362 - Add a NoPublish config option, so you can be a server (e.g. for
3363 testing running Tor servers in other Tor networks) without
3364 publishing your descriptor to the primary dirservers.
3367 Changes in version 0.1.0.3-rc - 2005-04-08
3368 o Improvements on 0.1.0.2-rc:
3369 - Client now retries when streams end early for 'hibernating' or
3370 'resource limit' reasons, rather than failing them.
3371 - More automated handling for dirserver operators:
3372 - Automatically approve nodes running 0.1.0.2-rc or later,
3373 now that the the reachability detection stuff is working.
3374 - Now we allow two unverified servers with the same nickname
3375 but different keys. But if a nickname is verified, only that
3376 nickname+key are allowed.
3377 - If you're an authdirserver connecting to an address:port,
3378 and it's not the OR you were expecting, forget about that
3379 descriptor. If he *was* the one you were expecting, then forget
3380 about all other descriptors for that address:port.
3381 - Allow servers to publish descriptors from 12 hours in the future.
3382 Corollary: only whine about clock skew from the dirserver if
3383 he's a trusted dirserver (since now even verified servers could
3384 have quite wrong clocks).
3385 - Adjust maximum skew and age for rendezvous descriptors: let skew
3386 be 48 hours rather than 90 minutes.
3387 - Efficiency improvements:
3388 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
3389 it much faster to look up a circuit for each relay cell.
3390 - Remove most calls to assert_all_pending_dns_resolves_ok(),
3391 since they're eating our cpu on exit nodes.
3392 - Stop wasting time doing a case insensitive comparison for every
3393 dns name every time we do any lookup. Canonicalize the names to
3394 lowercase and be done with it.
3395 - Start sending 'truncated' cells back rather than destroy cells,
3396 if the circuit closes in front of you. This means we won't have
3397 to abandon partially built circuits.
3398 - Only warn once per nickname from add_nickname_list_to_smartlist
3399 per failure, so an entrynode or exitnode choice that's down won't
3401 - Put a note in the torrc about abuse potential with the default
3403 - Revise control spec and implementation to allow all log messages to
3404 be sent to controller with their severities intact (suggested by
3405 Matt Edman). Update TorControl to handle new log event types.
3406 - Provide better explanation messages when controller's POSTDESCRIPTOR
3408 - Stop putting nodename in the Platform string in server descriptors.
3409 It doesn't actually help, and it is confusing/upsetting some people.
3411 o Bugfixes on 0.1.0.2-rc:
3412 - We were printing the host mask wrong in exit policies in server
3413 descriptors. This isn't a critical bug though, since we were still
3414 obeying the exit policy internally.
3415 - Fix Tor when compiled with libevent but without pthreads: move
3416 connection_unregister() from _connection_free() to
3418 - Fix an assert trigger (already fixed in 0.0.9.x): when we have
3419 the rare mysterious case of accepting a conn on 0.0.0.0:0, then
3420 when we look through the connection array, we'll find any of the
3421 cpu/dnsworkers. This is no good.
3423 o Bugfixes on 0.0.9.8:
3424 - Fix possible bug on threading platforms (e.g. win32) which was
3425 leaking a file descriptor whenever a cpuworker or dnsworker died.
3426 - When using preferred entry or exit nodes, ignore whether the
3427 circuit wants uptime or capacity. They asked for the nodes, they
3429 - chdir() to your datadirectory at the *end* of the daemonize process,
3430 not the beginning. This was a problem because the first time you
3431 run tor, if your datadir isn't there, and you have runasdaemon set
3432 to 1, it will try to chdir to it before it tries to create it. Oops.
3433 - Handle changed router status correctly when dirserver reloads
3434 fingerprint file. We used to be dropping all unverified descriptors
3435 right then. The bug was hidden because we would immediately
3436 fetch a directory from another dirserver, which would include the
3437 descriptors we just dropped.
3438 - When we're connecting to an OR and he's got a different nickname/key
3439 than we were expecting, only complain loudly if we're an OP or a
3440 dirserver. Complaining loudly to the OR admins just confuses them.
3441 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
3442 artificially capped at 500kB.
3445 Changes in version 0.0.9.8 - 2005-04-07
3446 o Bugfixes on 0.0.9.x:
3447 - We have a bug that I haven't found yet. Sometimes, very rarely,
3448 cpuworkers get stuck in the 'busy' state, even though the cpuworker
3449 thinks of itself as idle. This meant that no new circuits ever got
3450 established. Here's a workaround to kill any cpuworker that's been
3451 busy for more than 100 seconds.
3454 Changes in version 0.1.0.2-rc - 2005-04-01
3455 o Bugfixes on 0.1.0.1-rc:
3456 - Fixes on reachability detection:
3457 - Don't check for reachability while hibernating.
3458 - If ORPort is reachable but DirPort isn't, still publish the
3459 descriptor, but zero out DirPort until it's found reachable.
3460 - When building testing circs for ORPort testing, use only
3461 high-bandwidth nodes, so fewer circuits fail.
3462 - Complain about unreachable ORPort separately from unreachable
3463 DirPort, so the user knows what's going on.
3464 - Make sure we only conclude ORPort reachability if we didn't
3465 initiate the conn. Otherwise we could falsely conclude that
3466 we're reachable just because we connected to the guy earlier
3467 and he used that same pipe to extend to us.
3468 - Authdirservers shouldn't do ORPort reachability detection,
3469 since they're in clique mode, so it will be rare to find a
3470 server not already connected to them.
3471 - When building testing circuits, always pick middle hops running
3472 Tor 0.0.9.7, so we avoid the "can't extend to unknown routers"
3473 bug. (This is a kludge; it will go away when 0.0.9.x becomes
3475 - When we decide we're reachable, actually publish our descriptor
3477 - Fix bug in redirectstream in the controller.
3478 - Fix the state descriptor strings so logs don't claim edge streams
3479 are in a different state than they actually are.
3480 - Use recent libevent features when possible (this only really affects
3481 win32 and osx right now, because the new libevent with these
3482 features hasn't been released yet). Add code to suppress spurious
3484 - Prevent possible segfault in connection_close_unattached_ap().
3485 - Fix newlines on torrc in win32.
3486 - Improve error msgs when tor-resolve fails.
3488 o Improvements on 0.0.9.x:
3489 - New experimental script tor/contrib/ExerciseServer.py (needs more
3490 work) that uses the controller interface to build circuits and
3491 fetch pages over them. This will help us bootstrap servers that
3492 have lots of capacity but haven't noticed it yet.
3493 - New experimental script tor/contrib/PathDemo.py (needs more work)
3494 that uses the controller interface to let you choose whole paths
3496 "<hostname>.<path,separated by dots>.<length of path>.path"
3497 - When we've connected to an OR and handshaked but didn't like
3498 the result, we were closing the conn without sending destroy
3499 cells back for pending circuits. Now send those destroys.
3502 Changes in version 0.0.9.7 - 2005-04-01
3503 o Bugfixes on 0.0.9.x:
3504 - Fix another race crash bug (thanks to Glenn Fink for reporting).
3505 - Compare identity to identity, not to nickname, when extending to
3506 a router not already in the directory. This was preventing us from
3507 extending to unknown routers. Oops.
3508 - Make sure to create OS X Tor user in <500 range, so we aren't
3509 creating actual system users.
3510 - Note where connection-that-hasn't-sent-end was marked, and fix
3511 a few really loud instances of this harmless bug (it's fixed more
3515 Changes in version 0.1.0.1-rc - 2005-03-28
3517 - Add reachability testing. Your Tor server will automatically try
3518 to see if its ORPort and DirPort are reachable from the outside,
3519 and it won't upload its descriptor until it decides they are.
3520 - Handle unavailable hidden services better. Handle slow or busy
3521 hidden services better.
3522 - Add support for CONNECTing through https proxies, with "HttpsProxy"
3524 - New exit policy: accept most low-numbered ports, rather than
3525 rejecting most low-numbered ports.
3526 - More Tor controller support (still experimental). See
3527 http://tor.eff.org/doc/control-spec.txt for all the new features,
3528 including signals to emulate unix signals from any platform;
3529 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
3530 closestream; closecircuit; etc.
3531 - Make nt services work and start on startup on win32 (based on
3532 patch by Matt Edman).
3533 - Add a new AddressMap config directive to rewrite incoming socks
3534 addresses. This lets you, for example, declare an implicit
3535 required exit node for certain sites.
3536 - Add a new TrackHostExits config directive to trigger addressmaps
3537 for certain incoming socks addresses -- for sites that break when
3538 your exit keeps changing (based on patch by Mike Perry).
3539 - Redo the client-side dns cache so it's just an addressmap too.
3540 - Notice when our IP changes, and reset stats/uptime/reachability.
3541 - When an application is using socks5, give him the whole variety of
3542 potential socks5 responses (connect refused, host unreachable, etc),
3543 rather than just "success" or "failure".
3544 - A more sane version numbering system. See
3545 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
3546 - New contributed script "exitlist": a simple python script to
3547 parse directories and find Tor nodes that exit to listed
3549 - New contributed script "privoxy-tor-toggle" to toggle whether
3550 Privoxy uses Tor. Seems to be configured for Debian by default.
3551 - Report HTTP reasons to client when getting a response from directory
3552 servers -- so you can actually know what went wrong.
3553 - New config option MaxAdvertisedBandwidth which lets you advertise
3554 a low bandwidthrate (to not attract as many circuits) while still
3555 allowing a higher bandwidthrate in reality.
3557 o Robustness/stability fixes:
3558 - Make Tor use Niels Provos's libevent instead of its current
3559 poll-but-sometimes-select mess. This will let us use faster async
3560 cores (like epoll, kpoll, and /dev/poll), and hopefully work better
3562 - pthread support now too. This was forced because when we forked,
3563 we ended up wasting a lot of duplicate ram over time. Also switch
3564 to foo_r versions of some library calls to allow reentry and
3566 - Better handling for heterogeneous / unreliable nodes:
3567 - Annotate circuits w/ whether they aim to contain high uptime nodes
3568 and/or high capacity nodes. When building circuits, choose
3570 - This means that every single node in an intro rend circuit,
3571 not just the last one, will have a minimum uptime.
3572 - New config option LongLivedPorts to indicate application streams
3573 that will want high uptime circuits.
3574 - Servers reset uptime when a dir fetch entirely fails. This
3575 hopefully reflects stability of the server's network connectivity.
3576 - If somebody starts his tor server in Jan 2004 and then fixes his
3577 clock, don't make his published uptime be a year.
3578 - Reset published uptime when you wake up from hibernation.
3579 - Introduce a notion of 'internal' circs, which are chosen without
3580 regard to the exit policy of the last hop. Intro and rendezvous
3581 circs must be internal circs, to avoid leaking information. Resolve
3582 and connect streams can use internal circs if they want.
3583 - New circuit pooling algorithm: make sure to have enough circs around
3584 to satisfy any predicted ports, and also make sure to have 2 internal
3585 circs around if we've required internal circs lately (and with high
3586 uptime if we've seen that lately too).
3587 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
3588 which describes how often we retry making new circuits if current
3589 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
3590 how long we're willing to make use of an already-dirty circuit.
3591 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
3592 circ as necessary, if there are any completed ones lying around
3593 when we try to launch one.
3594 - Make hidden services try to establish a rendezvous for 30 seconds,
3595 rather than for n (where n=3) attempts to build a circuit.
3596 - Change SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to a config option
3597 "ShutdownWaitLength".
3598 - Try to be more zealous about calling connection_edge_end when
3599 things go bad with edge conns in connection.c.
3600 - Revise tor-spec to add more/better stream end reasons.
3601 - Revise all calls to connection_edge_end to avoid sending "misc",
3602 and to take errno into account where possible.
3605 - Fix a race condition that can trigger an assert, when we have a
3606 pending create cell and an OR connection fails right then.
3607 - Fix several double-mark-for-close bugs, e.g. where we were finding
3608 a conn for a cell even if that conn is already marked for close.
3609 - Make sequence of log messages when starting on win32 with no config
3610 file more reasonable.
3611 - When choosing an exit node for a new non-internal circ, don't take
3612 into account whether it'll be useful for any pending x.onion
3613 addresses -- it won't.
3614 - Turn addr_policy_compare from a tristate to a quadstate; this should
3615 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
3616 for google.com" problem.
3617 - Make "platform" string in descriptor more accurate for Win32 servers,
3618 so it's not just "unknown platform".
3619 - Fix an edge case in parsing config options (thanks weasel).
3620 If they say "--" on the commandline, it's not an option.
3621 - Reject odd-looking addresses at the client (e.g. addresses that
3622 contain a colon), rather than having the server drop them because
3624 - tor-resolve requests were ignoring .exit if there was a working circuit
3625 they could use instead.
3626 - REUSEADDR on normal platforms means you can rebind to the port
3627 right after somebody else has let it go. But REUSEADDR on win32
3628 means to let you bind to the port _even when somebody else
3629 already has it bound_! So, don't do that on Win32.
3630 - Change version parsing logic: a version is "obsolete" if it is not
3631 recommended and (1) there is a newer recommended version in the
3632 same series, or (2) there are no recommended versions in the same
3633 series, but there are some recommended versions in a newer series.
3634 A version is "new" if it is newer than any recommended version in
3636 - Stop most cases of hanging up on a socks connection without sending
3640 - Require BandwidthRate to be at least 20kB/s for servers.
3641 - When a dirserver causes you to give a warn, mention which dirserver
3643 - New config option DirAllowPrivateAddresses for authdirservers.
3644 Now by default they refuse router descriptors that have non-IP or
3645 private-IP addresses.
3646 - Stop publishing socksport in the directory, since it's not
3647 actually meant to be public. For compatibility, publish a 0 there
3649 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
3650 smart" value, that is low for servers and high for clients.
3651 - If our clock jumps forward by 100 seconds or more, assume something
3652 has gone wrong with our network and abandon all not-yet-used circs.
3653 - Warn when exit policy implicitly allows local addresses.
3654 - If we get an incredibly skewed timestamp from a dirserver mirror
3655 that isn't a verified OR, don't warn -- it's probably him that's
3657 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
3658 cookies to disk and doesn't log each web request to disk. (Thanks
3659 to Brett Carrington for pointing this out.)
3660 - When a client asks us for a dir mirror and we don't have one,
3661 launch an attempt to get a fresh one.
3662 - If we're hibernating and we get a SIGINT, exit immediately.
3663 - Add --with-dmalloc ./configure option, to track memory leaks.
3664 - And try to free all memory on closing, so we can detect what
3666 - Cache local dns resolves correctly even when they're .exit
3668 - Give a better warning when some other server advertises an
3669 ORPort that is actually an apache running ssl.
3670 - Add "opt hibernating 1" to server descriptor to make it clearer
3671 whether the server is hibernating.
3674 Changes in version 0.0.9.6 - 2005-03-24
3675 o Bugfixes on 0.0.9.x (crashes and asserts):
3676 - Add new end stream reasons to maintainance branch. Fix bug where
3677 reason (8) could trigger an assert. Prevent bug from recurring.
3678 - Apparently win32 stat wants paths to not end with a slash.
3679 - Fix assert triggers in assert_cpath_layer_ok(), where we were
3680 blowing away the circuit that conn->cpath_layer points to, then
3681 checking to see if the circ is well-formed. Backport check to make
3682 sure we dont use the cpath on a closed connection.
3683 - Prevent circuit_resume_edge_reading_helper() from trying to package
3684 inbufs for marked-for-close streams.
3685 - Don't crash on hup if your options->address has become unresolvable.
3686 - Some systems (like OS X) sometimes accept() a connection and tell
3687 you the remote host is 0.0.0.0:0. If this happens, due to some
3688 other mis-features, we get confused; so refuse the conn for now.
3690 o Bugfixes on 0.0.9.x (other):
3691 - Fix harmless but scary "Unrecognized content encoding" warn message.
3692 - Add new stream error reason: TORPROTOCOL reason means "you are not
3693 speaking a version of Tor I understand; say bye-bye to your stream."
3694 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
3695 into the future, now that we are more tolerant of skew. This
3696 resolves a bug where a Tor server would refuse to cache a directory
3697 because all the directories it gets are too far in the future;
3698 yet the Tor server never logs any complaints about clock skew.
3699 - Mac packaging magic: make man pages useable, and do not overwrite
3700 existing torrc files.
3701 - Make OS X log happily to /var/log/tor/tor.log
3704 Changes in version 0.0.9.5 - 2005-02-22
3705 o Bugfixes on 0.0.9.x:
3706 - Fix an assert race at exit nodes when resolve requests fail.
3707 - Stop picking unverified dir mirrors--it only leads to misery.
3708 - Patch from Matt Edman to make NT services work better. Service
3709 support is still not compiled into the executable by default.
3710 - Patch from Dmitri Bely so the Tor service runs better under
3711 the win32 SYSTEM account.
3712 - Make tor-resolve actually work (?) on Win32.
3713 - Fix a sign bug when getrlimit claims to have 4+ billion
3714 file descriptors available.
3715 - Stop refusing to start when bandwidthburst == bandwidthrate.
3716 - When create cells have been on the onion queue more than five
3717 seconds, just send back a destroy and take them off the list.
3720 Changes in version 0.0.9.4 - 2005-02-03
3721 o Bugfixes on 0.0.9:
3722 - Fix an assert bug that took down most of our servers: when
3723 a server claims to have 1 GB of bandwidthburst, don't
3725 - Don't crash as badly if we have spawned the max allowed number
3726 of dnsworkers, or we're out of file descriptors.
3727 - Block more file-sharing ports in the default exit policy.
3728 - MaxConn is now automatically set to the hard limit of max
3729 file descriptors we're allowed (ulimit -n), minus a few for
3731 - Give a clearer message when servers need to raise their
3732 ulimit -n when they start running out of file descriptors.
3733 - SGI Compatibility patches from Jan Schaumann.
3734 - Tolerate a corrupt cached directory better.
3735 - When a dirserver hasn't approved your server, list which one.
3736 - Go into soft hibernation after 95% of the bandwidth is used,
3737 not 99%. This is especially important for daily hibernators who
3738 have a small accounting max. Hopefully it will result in fewer
3739 cut connections when the hard hibernation starts.
3740 - Load-balance better when using servers that claim more than
3741 800kB/s of capacity.
3742 - Make NT services work (experimental, only used if compiled in).
3745 Changes in version 0.0.9.3 - 2005-01-21
3746 o Bugfixes on 0.0.9:
3747 - Backport the cpu use fixes from main branch, so busy servers won't
3748 need as much processor time.
3749 - Work better when we go offline and then come back, or when we
3750 run Tor at boot before the network is up. We do this by
3751 optimistically trying to fetch a new directory whenever an
3752 application request comes in and we think we're offline -- the
3753 human is hopefully a good measure of when the network is back.
3754 - Backport some minimal hidserv bugfixes: keep rend circuits open as
3755 long as you keep using them; actually publish hidserv descriptors
3756 shortly after they change, rather than waiting 20-40 minutes.
3757 - Enable Mac startup script by default.
3758 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
3759 - When you update AllowUnverifiedNodes or FirewallPorts via the
3760 controller's setconf feature, we were always appending, never
3762 - When you update HiddenServiceDir via setconf, it was screwing up
3763 the order of reading the lines, making it fail.
3764 - Do not rewrite a cached directory back to the cache; otherwise we
3765 will think it is recent and not fetch a newer one on startup.
3766 - Workaround for webservers that lie about Content-Encoding: Tor
3767 now tries to autodetect compressed directories and compression
3768 itself. This lets us Proxypass dir fetches through apache.
3771 Changes in version 0.0.9.2 - 2005-01-04
3772 o Bugfixes on 0.0.9 (crashes and asserts):
3773 - Fix an assert on startup when the disk is full and you're logging
3775 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
3776 style address, then we'd crash.
3777 - Fix an assert trigger when the running-routers string we get from
3778 a dirserver is broken.
3779 - Make worker threads start and run on win32. Now win32 servers
3781 - Bandaid (not actually fix, but now it doesn't crash) an assert
3782 where the dns worker dies mysteriously and the main Tor process
3783 doesn't remember anything about the address it was resolving.
3785 o Bugfixes on 0.0.9 (Win32):
3786 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
3787 name out of the warning/assert messages.
3788 - Fix a superficial "unhandled error on read" bug on win32.
3789 - The win32 installer no longer requires a click-through for our
3790 license, since our Free Software license grants rights but does not
3792 - Win32: When connecting to a dirserver fails, try another one
3793 immediately. (This was already working for non-win32 Tors.)
3794 - Stop trying to parse $HOME on win32 when hunting for default
3796 - Make tor-resolve.c work on win32 by calling network_init().
3798 o Bugfixes on 0.0.9 (other):
3799 - Make 0.0.9.x build on Solaris again.
3800 - Due to a fencepost error, we were blowing away the \n when reporting
3801 confvalue items in the controller. So asking for multiple config
3802 values at once couldn't work.
3803 - When listing circuits that are pending on an opening OR connection,
3804 if we're an OR we were listing circuits that *end* at us as
3805 being pending on every listener, dns/cpu worker, etc. Stop that.
3806 - Dirservers were failing to create 'running-routers' or 'directory'
3807 strings if we had more than some threshold of routers. Fix them so
3808 they can handle any number of routers.
3809 - Fix a superficial "Duplicate mark for close" bug.
3810 - Stop checking for clock skew for OR connections, even for servers.
3811 - Fix a fencepost error that was chopping off the last letter of any
3812 nickname that is the maximum allowed nickname length.
3813 - Update URLs in log messages so they point to the new website.
3814 - Fix a potential problem in mangling server private keys while
3815 writing to disk (not triggered yet, as far as we know).
3816 - Include the licenses for other free software we include in Tor,
3817 now that we're shipping binary distributions more regularly.
3820 Changes in version 0.0.9.1 - 2004-12-15
3821 o Bugfixes on 0.0.9:
3822 - Make hibernation actually work.
3823 - Make HashedControlPassword config option work.
3824 - When we're reporting event circuit status to a controller,
3825 don't use the stream status code.
3828 Changes in version 0.0.9 - 2004-12-12
3830 - Clean up manpage and torrc.sample file.
3831 - Clean up severities and text of log warnings.
3833 - Make servers trigger an assert when they enter hibernation.
3836 Changes in version 0.0.9rc7 - 2004-12-08
3837 o Bugfixes on 0.0.9rc:
3838 - Fix a stack-trashing crash when an exit node begins hibernating.
3839 - Avoid looking at unallocated memory while considering which
3840 ports we need to build circuits to cover.
3841 - Stop a sigpipe: when an 'end' cell races with eof from the app,
3842 we shouldn't hold-open-until-flush if the eof arrived first.
3843 - Fix a bug with init_cookie_authentication() in the controller.
3844 - When recommending new-format log lines, if the upper bound is
3845 LOG_ERR, leave it implicit.
3847 o Bugfixes on 0.0.8.1:
3848 - Fix a whole slew of memory leaks.
3849 - Fix isspace() and friends so they still make Solaris happy
3850 but also so they don't trigger asserts on win32.
3851 - Fix parse_iso_time on platforms without strptime (eg win32).
3852 - win32: tolerate extra "readable" events better.
3853 - win32: when being multithreaded, leave parent fdarray open.
3854 - Make unit tests work on win32.
3857 Changes in version 0.0.9rc6 - 2004-12-06
3858 o Bugfixes on 0.0.9pre:
3859 - Clean up some more integer underflow opportunities (not exploitable
3861 - While hibernating, hup should not regrow our listeners.
3862 - Send an end to the streams we close when we hibernate, rather
3863 than just chopping them off.
3864 - React to eof immediately on non-open edge connections.
3866 o Bugfixes on 0.0.8.1:
3867 - Calculate timeout for waiting for a connected cell from the time
3868 we sent the begin cell, not from the time the stream started. If
3869 it took a long time to establish the circuit, we would time out
3870 right after sending the begin cell.
3871 - Fix router_compare_addr_to_addr_policy: it was not treating a port
3872 of * as always matching, so we were picking reject *:* nodes as
3873 exit nodes too. Oops.
3876 - New circuit building strategy: keep a list of ports that we've
3877 used in the past 6 hours, and always try to have 2 circuits open
3878 or on the way that will handle each such port. Seed us with port
3879 80 so web users won't complain that Tor is "slow to start up".
3880 - Make kill -USR1 dump more useful stats about circuits.
3881 - When warning about retrying or giving up, print the address, so
3882 the user knows which one it's talking about.
3883 - If you haven't used a clean circuit in an hour, throw it away,
3884 just to be on the safe side. (This means after 6 hours a totally
3885 unused Tor client will have no circuits open.)
3888 Changes in version 0.0.9rc5 - 2004-12-01
3889 o Bugfixes on 0.0.8.1:
3890 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
3891 - Let resolve conns retry/expire also, rather than sticking around
3893 - If we are using select, make sure we stay within FD_SETSIZE.
3895 o Bugfixes on 0.0.9pre:
3896 - Fix integer underflow in tor_vsnprintf() that may be exploitable,
3897 but doesn't seem to be currently; thanks to Ilja van Sprundel for
3899 - If anybody set DirFetchPostPeriod, give them StatusFetchPeriod
3900 instead. Impose minima and maxima for all *Period options; impose
3901 even tighter maxima for fetching if we are a caching dirserver.
3902 Clip rather than rejecting.
3903 - Fetch cached running-routers from servers that serve it (that is,
3904 authdirservers and servers running 0.0.9rc5-cvs or later.)
3907 - Accept *:706 (silc) in default exit policy.
3908 - Implement new versioning format for post 0.1.
3909 - Support "foo.nickname.exit" addresses, to let Alice request the
3910 address "foo" as viewed by exit node "nickname". Based on a patch
3912 - Make tor --version --version dump the cvs Id of every file.
3915 Changes in version 0.0.9rc4 - 2004-11-28
3916 o Bugfixes on 0.0.8.1:
3917 - Make windows sockets actually non-blocking (oops), and handle
3918 win32 socket errors better.
3920 o Bugfixes on 0.0.9rc1:
3921 - Actually catch the -USR2 signal.
3924 Changes in version 0.0.9rc3 - 2004-11-25
3925 o Bugfixes on 0.0.8.1:
3926 - Flush the log file descriptor after we print "Tor opening log file",
3927 so we don't see those messages days later.
3929 o Bugfixes on 0.0.9rc1:
3930 - Make tor-resolve work again.
3931 - Avoid infinite loop in tor-resolve if tor hangs up on it.
3932 - Fix an assert trigger for clients/servers handling resolves.
3935 Changes in version 0.0.9rc2 - 2004-11-24
3936 o Bugfixes on 0.0.9rc1:
3937 - I broke socks5 support while fixing the eof bug.
3938 - Allow unitless bandwidths and intervals; they default to bytes
3940 - New servers don't start out hibernating; they are active until
3941 they run out of bytes, so they have a better estimate of how
3942 long it takes, and so their operators can know they're working.
3945 Changes in version 0.0.9rc1 - 2004-11-23
3946 o Bugfixes on 0.0.8.1:
3947 - Finally fix a bug that's been plaguing us for a year:
3948 With high load, circuit package window was reaching 0. Whenever
3949 we got a circuit-level sendme, we were reading a lot on each
3950 socket, but only writing out a bit. So we would eventually reach
3951 eof. This would be noticed and acted on even when there were still
3952 bytes sitting in the inbuf.
3953 - When poll() is interrupted, we shouldn't believe the revents values.
3955 o Bugfixes on 0.0.9pre6:
3956 - Fix hibernate bug that caused pre6 to be broken.
3957 - Don't keep rephist info for routers that haven't had activity for
3958 24 hours. (This matters now that clients have keys, since we track
3960 - Never call close_temp_logs while validating log options.
3961 - Fix backslash-escaping on tor.sh.in and torctl.in.
3964 - Implement weekly/monthly/daily accounting: now you specify your
3965 hibernation properties by
3966 AccountingMax N bytes|KB|MB|GB|TB
3967 AccountingStart day|week|month [day] HH:MM
3968 Defaults to "month 1 0:00".
3969 - Let bandwidth and interval config options be specified as 5 bytes,
3970 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
3971 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
3972 get back to normal.)
3973 - If your requested entry or exit node has advertised bandwidth 0,
3975 - Be more greedy about filling up relay cells -- we try reading again
3976 once we've processed the stuff we read, in case enough has arrived
3977 to fill the last cell completely.
3978 - Apply NT service patch from Osamu Fujino. Still needs more work.
3981 Changes in version 0.0.9pre6 - 2004-11-15
3982 o Bugfixes on 0.0.8.1:
3983 - Fix assert failure on malformed socks4a requests.
3984 - Use identity comparison, not nickname comparison, to choose which
3985 half of circuit-ID-space each side gets to use. This is needed
3986 because sometimes we think of a router as a nickname, and sometimes
3987 as a hex ID, and we can't predict what the other side will do.
3988 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
3989 write() call will fail and we handle it there.
3990 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
3991 and smartlist_len, which are two major profiling offenders.
3993 o Bugfixes on 0.0.9pre5:
3994 - Fix a bug in read_all that was corrupting config files on windows.
3995 - When we're raising the max number of open file descriptors to
3996 'unlimited', don't log that we just raised it to '-1'.
3997 - Include event code with events, as required by control-spec.txt.
3998 - Don't give a fingerprint when clients do --list-fingerprint:
3999 it's misleading, because it will never be the same again.
4000 - Stop using strlcpy in tor_strndup, since it was slowing us
4002 - Remove warn on startup about missing cached-directory file.
4003 - Make kill -USR1 work again.
4004 - Hibernate if we start tor during the "wait for wakeup-time" phase
4005 of an accounting interval. Log our hibernation plans better.
4006 - Authoritative dirservers now also cache their directory, so they
4007 have it on start-up.
4010 - Fetch running-routers; cache running-routers; compress
4011 running-routers; serve compressed running-routers.z
4012 - Add NSI installer script contributed by J Doe.
4013 - Commit VC6 and VC7 workspace/project files.
4014 - Commit a tor.spec for making RPM files, with help from jbash.
4015 - Add contrib/torctl.in contributed by Glenn Fink.
4016 - Implement the control-spec's SAVECONF command, to write your
4017 configuration to torrc.
4018 - Get cookie authentication for the controller closer to working.
4019 - Include control-spec.txt in the tarball.
4020 - When set_conf changes our server descriptor, upload a new copy.
4021 But don't upload it too often if there are frequent changes.
4022 - Document authentication config in man page, and document signals
4024 - Clean up confusing parts of man page and torrc.sample.
4025 - Make expand_filename handle ~ and ~username.
4026 - Use autoconf to enable largefile support where necessary. Use
4027 ftello where available, since ftell can fail at 2GB.
4028 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
4029 log more informatively.
4030 - Give a slightly more useful output for "tor -h".
4031 - Refuse application socks connections to port 0.
4032 - Check clock skew for verified servers, but allow unverified
4033 servers and clients to have any clock skew.
4034 - Break DirFetchPostPeriod into:
4035 - DirFetchPeriod for fetching full directory,
4036 - StatusFetchPeriod for fetching running-routers,
4037 - DirPostPeriod for posting server descriptor,
4038 - RendPostPeriod for posting hidden service descriptors.
4039 - Make sure the hidden service descriptors are at a random offset
4040 from each other, to hinder linkability.
4043 Changes in version 0.0.9pre5 - 2004-11-09
4044 o Bugfixes on 0.0.9pre4:
4045 - Fix a seg fault in unit tests (doesn't affect main program).
4046 - Fix an assert bug where a hidden service provider would fail if
4047 the first hop of his rendezvous circuit was down.
4048 - Hidden service operators now correctly handle version 1 style
4049 INTRODUCE1 cells (nobody generates them still, so not a critical
4051 - If do_hup fails, actually notice.
4052 - Handle more errnos from accept() without closing the listener.
4053 Some OpenBSD machines were closing their listeners because
4054 they ran out of file descriptors.
4055 - Send resolve cells to exit routers that are running a new
4056 enough version of the resolve code to work right.
4057 - Better handling of winsock includes on non-MSV win32 compilers.
4058 - Some people had wrapped their tor client/server in a script
4059 that would restart it whenever it died. This did not play well
4060 with our "shut down if your version is obsolete" code. Now people
4061 don't fetch a new directory if their local cached version is
4063 - Make our autogen.sh work on ksh as well as bash.
4066 - Hibernation: New config option "AccountingMaxKB" lets you
4067 set how many KBytes per month you want to allow your server to
4068 consume. Rather than spreading those bytes out evenly over the
4069 month, we instead hibernate for some of the month and pop up
4070 at a deterministic time, work until the bytes are consumed, then
4071 hibernate again. Config option "MonthlyAccountingStart" lets you
4072 specify which day of the month your billing cycle starts on.
4073 - Control interface: a separate program can now talk to your
4074 client/server over a socket, and get/set config options, receive
4075 notifications of circuits and streams starting/finishing/dying,
4076 bandwidth used, etc. The next step is to get some GUIs working.
4077 Let us know if you want to help out. See doc/control-spec.txt .
4078 - Ship a contrib/tor-control.py as an example script to interact
4079 with the control port.
4080 - "tor --hash-password zzyxz" will output a salted password for
4081 use in authenticating to the control interface.
4082 - New log format in config:
4083 "Log minsev[-maxsev] stdout|stderr|syslog" or
4084 "Log minsev[-maxsev] file /var/foo"
4087 - DirPolicy config option, to let people reject incoming addresses
4088 from their dirserver.
4089 - "tor --list-fingerprint" will list your identity key fingerprint
4091 - Add "pass" target for RedirectExit, to make it easier to break
4092 out of a sequence of RedirectExit rules.
4093 - Clients now generate a TLS cert too, in preparation for having
4094 them act more like real nodes.
4095 - Ship src/win32/ in the tarball, so people can use it to build.
4096 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
4098 - New "router-status" line in directory, to better bind each verified
4099 nickname to its identity key.
4100 - Deprecate unofficial config option abbreviations, and abbreviations
4101 not on the command line.
4102 - Add a pure-C tor-resolve implementation.
4103 - Use getrlimit and friends to ensure we can reach MaxConn (currently
4104 1024) file descriptors.
4106 o Code security improvements, inspired by Ilja:
4107 - Replace sprintf with snprintf. (I think they were all safe, but
4109 - Replace strcpy/strncpy with strlcpy in more places.
4110 - Avoid strcat; use snprintf or strlcat instead.
4111 - snprintf wrapper with consistent (though not C99) overflow behavior.
4114 Changes in version 0.0.9pre4 - 2004-10-17
4115 o Bugfixes on 0.0.9pre3:
4116 - If the server doesn't specify an exit policy, use the real default
4117 exit policy, not reject *:*.
4118 - Ignore fascistfirewall when uploading/downloading hidden service
4119 descriptors, since we go through Tor for those; and when using
4120 an HttpProxy, since we assume it can reach them all.
4121 - When looking for an authoritative dirserver, use only the ones
4122 configured at boot. Don't bother looking in the directory.
4123 - The rest of the fix for get_default_conf_file() on older win32.
4124 - Make 'Routerfile' config option obsolete.
4127 - New 'MyFamily nick1,...' config option for a server to
4128 specify other servers that shouldn't be used in the same circuit
4129 with it. Only believed if nick1 also specifies us.
4130 - New 'NodeFamily nick1,nick2,...' config option for a client to
4131 specify nodes that it doesn't want to use in the same circuit.
4132 - New 'Redirectexit pattern address:port' config option for a
4133 server to redirect exit connections, e.g. to a local squid.
4136 Changes in version 0.0.9pre3 - 2004-10-13
4137 o Bugfixes on 0.0.8.1:
4138 - Better torrc example lines for dirbindaddress and orbindaddress.
4139 - Improved bounds checking on parsed ints (e.g. config options and
4140 the ones we find in directories.)
4141 - Better handling of size_t vs int, so we're more robust on 64
4143 - Fix the rest of the bug where a newly started OR would appear
4144 as unverified even after we've added his fingerprint and hupped
4146 - Fix a bug from 0.0.7: when read() failed on a stream, we would
4147 close it without sending back an end. So 'connection refused'
4148 would simply be ignored and the user would get no response.
4150 o Bugfixes on 0.0.9pre2:
4151 - Serving the cached-on-disk directory to people is bad. We now
4152 provide no directory until we've fetched a fresh one.
4153 - Workaround for bug on windows where cached-directories get crlf
4155 - Make get_default_conf_file() work on older windows too.
4156 - If we write a *:* exit policy line in the descriptor, don't write
4157 any more exit policy lines.
4160 - Use only 0.0.9pre1 and later servers for resolve cells.
4161 - Make the dirservers file obsolete.
4162 - Include a dir-signing-key token in directories to tell the
4163 parsing entity which key is being used to sign.
4164 - Remove the built-in bulky default dirservers string.
4165 - New config option "Dirserver %s:%d [fingerprint]", which can be
4166 repeated as many times as needed. If no dirservers specified,
4167 default to moria1,moria2,tor26.
4168 - Make moria2 advertise a dirport of 80, so people behind firewalls
4169 will be able to get a directory.
4170 - Http proxy support
4171 - Dirservers translate requests for http://%s:%d/x to /x
4172 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
4173 be routed through this host.
4174 - Clients ask for /tor/x rather than /x for new enough dirservers.
4175 This way we can one day coexist peacefully with apache.
4176 - Clients specify a "Host: %s%d" http header, to be compatible
4177 with more proxies, and so running squid on an exit node can work.
4180 Changes in version 0.0.8.1 - 2004-10-13
4182 - Fix a seg fault that can be triggered remotely for Tor
4183 clients/servers with an open dirport.
4184 - Fix a rare assert trigger, where routerinfos for entries in
4185 our cpath would expire while we're building the path.
4186 - Fix a bug in OutboundBindAddress so it (hopefully) works.
4187 - Fix a rare seg fault for people running hidden services on
4188 intermittent connections.
4189 - Fix a bug in parsing opt keywords with objects.
4190 - Fix a stale pointer assert bug when a stream detaches and
4192 - Fix a string format vulnerability (probably not exploitable)
4193 in reporting stats locally.
4194 - Fix an assert trigger: sometimes launching circuits can fail
4195 immediately, e.g. because too many circuits have failed recently.
4196 - Fix a compile warning on 64 bit platforms.
4199 Changes in version 0.0.9pre2 - 2004-10-03
4201 - Make fetching a cached directory work for 64-bit platforms too.
4202 - Make zlib.h a required header, not an optional header.
4205 Changes in version 0.0.9pre1 - 2004-10-01
4207 - Stop using separate defaults for no-config-file and
4208 empty-config-file. Now you have to explicitly turn off SocksPort,
4209 if you don't want it open.
4210 - Fix a bug in OutboundBindAddress so it (hopefully) works.
4211 - Improve man page to mention more of the 0.0.8 features.
4212 - Fix a rare seg fault for people running hidden services on
4213 intermittent connections.
4214 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
4216 - Fix more dns related bugs: send back resolve_failed and end cells
4217 more reliably when the resolve fails, rather than closing the
4218 circuit and then trying to send the cell. Also attach dummy resolve
4219 connections to a circuit *before* calling dns_resolve(), to fix
4220 a bug where cached answers would never be sent in RESOLVED cells.
4221 - When we run out of disk space, or other log writing error, don't
4222 crash. Just stop logging to that log and continue.
4223 - We were starting to daemonize before we opened our logs, so if
4224 there were any problems opening logs, we would complain to stderr,
4225 which wouldn't work, and then mysteriously exit.
4226 - Fix a rare bug where sometimes a verified OR would connect to us
4227 before he'd uploaded his descriptor, which would cause us to
4228 assign conn->nickname as though he's unverified. Now we look through
4229 the fingerprint list to see if he's there.
4230 - Fix a rare assert trigger, where routerinfos for entries in
4231 our cpath would expire while we're building the path.
4234 - Clients can ask dirservers for /dir.z to get a compressed version
4235 of the directory. Only works for servers running 0.0.9, of course.
4236 - Make clients cache directories and use them to seed their router
4237 lists at startup. This means clients have a datadir again.
4238 - Configuration infrastructure support for warning on obsolete
4240 - Respond to content-encoding headers by trying to uncompress as
4242 - Reply with a deflated directory when a client asks for "dir.z".
4243 We could use allow-encodings instead, but allow-encodings isn't
4244 specified in HTTP 1.0.
4245 - Raise the max dns workers from 50 to 100.
4246 - Discourage people from setting their dirfetchpostperiod more often
4247 than once per minute.
4248 - Protect dirservers from overzealous descriptor uploading -- wait
4249 10 seconds after directory gets dirty, before regenerating.
4252 Changes in version 0.0.8 - 2004-08-25
4253 o Port it to SunOS 5.9 / Athena
4256 Changes in version 0.0.8rc2 - 2004-08-20
4257 o Make it compile on cygwin again.
4258 o When picking unverified routers, skip those with low uptime and/or
4259 low bandwidth, depending on what properties you care about.
4262 Changes in version 0.0.8rc1 - 2004-08-18
4263 o Changes from 0.0.7.3:
4265 - Fix assert triggers: if the other side returns an address 0.0.0.0,
4266 don't put it into the client dns cache.
4267 - If a begin failed due to exit policy, but we believe the IP address
4268 should have been allowed, switch that router to exitpolicy reject *:*
4269 until we get our next directory.
4271 - Clients choose nodes proportional to advertised bandwidth.
4272 - Avoid using nodes with low uptime as introduction points.
4273 - Handle servers with dynamic IP addresses: don't replace
4274 options->Address with the resolved one at startup, and
4275 detect our address right before we make a routerinfo each time.
4276 - 'FascistFirewall' option to pick dirservers and ORs on specific
4277 ports; plus 'FirewallPorts' config option to tell FascistFirewall
4278 which ports are open. (Defaults to 80,443)
4279 - Be more aggressive about trying to make circuits when the network
4280 has changed (e.g. when you unsuspend your laptop).
4281 - Check for time skew on http headers; report date in response to
4283 - If the entrynode config line has only one node, don't pick it as
4285 - Add strict{entry|exit}nodes config options. If set to 1, then
4286 we refuse to build circuits that don't include the specified entry
4288 - OutboundBindAddress config option, to bind to a specific
4289 IP address for outgoing connect()s.
4290 - End truncated log entries (e.g. directories) with "[truncated]".
4292 o Patches to 0.0.8preX:
4294 - Patches to compile and run on win32 again (maybe)?
4295 - Fix crash when looking for ~/.torrc with no $HOME set.
4296 - Fix a race bug in the unit tests.
4297 - Handle verified/unverified name collisions better when new
4298 routerinfo's arrive in a directory.
4299 - Sometimes routers were getting entered into the stats before
4300 we'd assigned their identity_digest. Oops.
4301 - Only pick and establish intro points after we've gotten a
4304 - AllowUnverifiedNodes config option to let circuits choose no-name
4305 routers in entry,middle,exit,introduction,rendezvous positions.
4306 Allow middle and rendezvous positions by default.
4307 - Add a man page for tor-resolve.
4310 Changes in version 0.0.7.3 - 2004-08-12
4311 o Stop dnsworkers from triggering an assert failure when you
4312 ask them to resolve the host "".
4315 Changes in version 0.0.8pre3 - 2004-08-09
4316 o Changes from 0.0.7.2:
4317 - Allow multiple ORs with same nickname in routerlist -- now when
4318 people give us one identity key for a nickname, then later
4319 another, we don't constantly complain until the first expires.
4320 - Remember used bandwidth (both in and out), and publish 15-minute
4321 snapshots for the past day into our descriptor.
4322 - You can now fetch $DIRURL/running-routers to get just the
4323 running-routers line, not the whole descriptor list. (But
4324 clients don't use this yet.)
4325 - When people mistakenly use Tor as an http proxy, point them
4326 at the tor-doc.html rather than the INSTALL.
4327 - Remove our mostly unused -- and broken -- hex_encode()
4328 function. Use base16_encode() instead. (Thanks to Timo Lindfors
4329 for pointing out this bug.)
4330 - Rotate onion keys every 12 hours, not every 2 hours, so we have
4331 fewer problems with people using the wrong key.
4332 - Change the default exit policy to reject the default edonkey,
4333 kazaa, gnutella ports.
4334 - Add replace_file() to util.[ch] to handle win32's rename().
4336 o Changes from 0.0.8preX:
4337 - Fix two bugs in saving onion keys to disk when rotating, so
4338 hopefully we'll get fewer people using old onion keys.
4339 - Fix an assert error that was making SocksPolicy not work.
4340 - Be willing to expire routers that have an open dirport -- it's
4341 just the authoritative dirservers we want to not forget.
4342 - Reject tor-resolve requests for .onion addresses early, so we
4343 don't build a whole rendezvous circuit and then fail.
4344 - When you're warning a server that he's unverified, don't cry
4346 - Fix a race condition: don't try to extend onto a connection
4347 that's still handshaking.
4348 - For servers in clique mode, require the conn to be open before
4349 you'll choose it for your path.
4350 - Fix some cosmetic bugs about duplicate mark-for-close, lack of
4351 end relay cell, etc.
4352 - Measure bandwidth capacity over the last 24 hours, not just 12
4353 - Bugfix: authoritative dirservers were making and signing a new
4354 directory for each client, rather than reusing the cached one.
4357 Changes in version 0.0.8pre2 - 2004-08-04
4358 o Changes from 0.0.7.2:
4360 - Check directory signature _before_ you decide whether you're
4361 you're running an obsolete version and should exit.
4362 - Check directory signature _before_ you parse the running-routers
4363 list to decide who's running or verified.
4364 - Bugfixes and features:
4365 - Check return value of fclose while writing to disk, so we don't
4366 end up with broken files when servers run out of disk space.
4367 - Log a warning if the user uses an unsafe socks variant, so people
4368 are more likely to learn about privoxy or socat.
4369 - Dirservers now include RFC1123-style dates in the HTTP headers,
4370 which one day we will use to better detect clock skew.
4372 o Changes from 0.0.8pre1:
4373 - Make it compile without warnings again on win32.
4374 - Log a warning if you're running an unverified server, to let you
4375 know you might want to get it verified.
4376 - Only pick a default nickname if you plan to be a server.
4379 Changes in version 0.0.8pre1 - 2004-07-23
4381 - Made our unit tests compile again on OpenBSD 3.5, and tor
4382 itself compile again on OpenBSD on a sparc64.
4383 - We were neglecting milliseconds when logging on win32, so
4384 everything appeared to happen at the beginning of each second.
4387 - 'Extend' relay cell payloads now include the digest of the
4388 intended next hop's identity key. Now we can verify that we're
4389 extending to the right router, and also extend to routers we
4390 hadn't heard of before.
4393 - Tor nodes can now act as relays (with an advertised ORPort)
4394 without being manually verified by the dirserver operators.
4395 - Uploaded descriptors of unverified routers are now accepted
4396 by the dirservers, and included in the directory.
4397 - Verified routers are listed by nickname in the running-routers
4398 list; unverified routers are listed as "$<fingerprint>".
4399 - We now use hash-of-identity-key in most places rather than
4400 nickname or addr:port, for improved security/flexibility.
4401 - To avoid Sybil attacks, paths still use only verified servers.
4402 But now we have a chance to play around with hybrid approaches.
4403 - Nodes track bandwidth usage to estimate capacity (not used yet).
4404 - ClientOnly option for nodes that never want to become servers.
4405 - Directory caching.
4406 - "AuthoritativeDir 1" option for the official dirservers.
4407 - Now other nodes (clients and servers) will cache the latest
4408 directory they've pulled down.
4409 - They can enable their DirPort to serve it to others.
4410 - Clients will pull down a directory from any node with an open
4411 DirPort, and check the signature/timestamp correctly.
4412 - Authoritative dirservers now fetch directories from other
4413 authdirservers, to stay better synced.
4414 - Running-routers list tells who's down also, along with noting
4415 if they're verified (listed by nickname) or unverified (listed
4417 - Allow dirservers to serve running-router list separately.
4418 This isn't used yet.
4419 - ORs connect-on-demand to other ORs
4420 - If you get an extend cell to an OR you're not connected to,
4421 connect, handshake, and forward the create cell.
4422 - The authoritative dirservers stay connected to everybody,
4423 and everybody stays connected to 0.0.7 servers, but otherwise
4424 clients/servers expire unused connections after 5 minutes.
4425 - When servers get a sigint, they delay 30 seconds (refusing new
4426 connections) then exit. A second sigint causes immediate exit.
4427 - File and name management:
4428 - Look for .torrc if no CONFDIR "torrc" is found.
4429 - If no datadir is defined, then choose, make, and secure ~/.tor
4431 - If torrc not found, exitpolicy reject *:*.
4432 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
4433 - If no nickname is defined, derive default from hostname.
4434 - Rename secret key files, e.g. identity.key -> secret_id_key,
4435 to discourage people from mailing their identity key to tor-ops.
4436 - Refuse to build a circuit before the directory has arrived --
4437 it won't work anyway, since you won't know the right onion keys
4439 - Try other dirservers immediately if the one you try is down. This
4440 should tolerate down dirservers better now.
4441 - Parse tor version numbers so we can do an is-newer-than check
4442 rather than an is-in-the-list check.
4443 - New socks command 'resolve', to let us shim gethostbyname()
4445 - A 'tor_resolve' script to access the socks resolve functionality.
4446 - A new socks-extensions.txt doc file to describe our
4447 interpretation and extensions to the socks protocols.
4448 - Add a ContactInfo option, which gets published in descriptor.
4449 - Publish OR uptime in descriptor (and thus in directory) too.
4450 - Write tor version at the top of each log file
4451 - New docs in the tarball:
4453 - Document that you should proxy your SSL traffic too.
4456 Changes in version 0.0.7.2 - 2004-07-07
4457 o A better fix for the 0.0.0.0 problem, that will hopefully
4458 eliminate the remaining related assertion failures.
4461 Changes in version 0.0.7.1 - 2004-07-04
4462 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
4463 since internally we use 0.0.0.0 to signify "not yet resolved".
4466 Changes in version 0.0.7 - 2004-06-07
4467 o Updated the man page to reflect the new features.
4470 Changes in version 0.0.7rc2 - 2004-06-06
4471 o Changes from 0.0.7rc1:
4472 - Make it build on Win32 again.
4473 o Changes from 0.0.6.2:
4474 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
4478 Changes in version 0.0.7rc1 - 2004-06-02
4480 - On sighup, we were adding another log without removing the first
4481 one. So log messages would get duplicated n times for n sighups.
4482 - Several cases of using a connection after we'd freed it. The
4483 problem was that connections that are pending resolve are in both
4484 the pending_resolve tree, and also the circuit's resolving_streams
4485 list. When you want to remove one, you must remove it from both.
4486 - Fix a double-mark-for-close where an end cell arrived for a
4487 resolving stream, and then the resolve failed.
4488 - Check directory signatures based on name of signer, not on whom
4489 we got the directory from. This will let us cache directories more
4492 - Crank up some of our constants to handle more users.
4495 Changes in version 0.0.7pre1 - 2004-06-02
4496 o Fixes for crashes and other obnoxious bugs:
4497 - Fix an epipe bug: sometimes when directory connections failed
4498 to connect, we would give them a chance to flush before closing
4500 - When we detached from a circuit because of resolvefailed, we
4501 would immediately try the same circuit twice more, and then
4502 give up on the resolve thinking we'd tried three different
4504 - Limit the number of intro circuits we'll attempt to build for a
4505 hidden service per 15-minute period.
4506 - Check recommended-software string *early*, before actually parsing
4507 the directory. Thus we can detect an obsolete version and exit,
4508 even if the new directory format doesn't parse.
4509 o Fixes for security bugs:
4510 - Remember which nodes are dirservers when you startup, and if a
4511 random OR enables his dirport, don't automatically assume he's
4512 a trusted dirserver.
4514 - Directory connections were asking the wrong poll socket to
4515 start writing, and not asking themselves to start writing.
4516 - When we detached from a circuit because we sent a begin but
4517 didn't get a connected, we would use it again the first time;
4518 but after that we would correctly switch to a different one.
4519 - Stop warning when the first onion decrypt attempt fails; they
4520 will sometimes legitimately fail now that we rotate keys.
4521 - Override unaligned-access-ok check when $host_cpu is ia64 or
4522 arm. Apparently they allow it but the kernel whines.
4523 - Dirservers try to reconnect periodically too, in case connections
4525 - Fix some memory leaks in directory servers.
4526 - Allow backslash in Win32 filenames.
4527 - Made Tor build complain-free on FreeBSD, hopefully without
4528 breaking other BSD builds. We'll see.
4530 - Doxygen markup on all functions and global variables.
4531 - Make directory functions update routerlist, not replace it. So
4532 now directory disagreements are not so critical a problem.
4533 - Remove the upper limit on number of descriptors in a dirserver's
4534 directory (not that we were anywhere close).
4535 - Allow multiple logfiles at different severity ranges.
4536 - Allow *BindAddress to specify ":port" rather than setting *Port
4537 separately. Allow multiple instances of each BindAddress config
4538 option, so you can bind to multiple interfaces if you want.
4539 - Allow multiple exit policy lines, which are processed in order.
4540 Now we don't need that huge line with all the commas in it.
4541 - Enable accept/reject policies on SOCKS connections, so you can bind
4542 to 0.0.0.0 but still control who can use your OP.
4545 Changes in version 0.0.6.2 - 2004-05-16
4546 o Our integrity-checking digest was checking only the most recent cell,
4547 not the previous cells like we'd thought.
4548 Thanks to Stefan Mark for finding the flaw!
4551 Changes in version 0.0.6.1 - 2004-05-06
4552 o Fix two bugs in our AES counter-mode implementation (this affected
4553 onion-level stream encryption, but not TLS-level). It turns
4554 out we were doing something much more akin to a 16-character
4555 polyalphabetic cipher. Oops.
4556 Thanks to Stefan Mark for finding the flaw!
4557 o Retire moria3 as a directory server, and add tor26 as a directory
4561 Changes in version 0.0.6 - 2004-05-02
4565 Changes in version 0.0.6rc4 - 2004-05-01
4566 o Update the built-in dirservers list to use the new directory format
4567 o Fix a rare seg fault: if a node offering a hidden service attempts
4568 to build a circuit to Alice's rendezvous point and fails before it
4569 reaches the last hop, it retries with a different circuit, but
4571 o Handle windows socket errors correctly.
4574 Changes in version 0.0.6rc3 - 2004-04-28
4575 o Don't expire non-general excess circuits (if we had enough
4576 circuits open, we were expiring rendezvous circuits -- even
4577 when they had a stream attached. oops.)
4578 o Fetch randomness from /dev/urandom better (not via fopen/fread)
4579 o Better debugging for tls errors
4580 o Some versions of openssl have an SSL_pending function that erroneously
4581 returns bytes when there is a non-application record pending.
4582 o Set Content-Type on the directory and hidserv descriptor.
4583 o Remove IVs from cipher code, since AES-ctr has none.
4584 o Win32 fixes. Tor now compiles on win32 with no warnings/errors.
4585 o We were using an array of length zero in a few places.
4586 o win32's gethostbyname can't resolve an IP to an IP.
4587 o win32's close can't close a socket.
4590 Changes in version 0.0.6rc2 - 2004-04-26
4591 o Fix a bug where we were closing tls connections intermittently.
4592 It turns out openssl keeps its errors around -- so if an error
4593 happens, and you don't ask about it, and then another openssl
4594 operation happens and succeeds, and you ask if there was an error,
4595 it tells you about the first error. Fun fun.
4596 o Fix a bug that's been lurking since 27 may 03 (!)
4597 When passing back a destroy cell, we would use the wrong circ id.
4598 'Mostly harmless', but still worth fixing.
4599 o Since we don't support truncateds much, don't bother sending them;
4600 just close the circ.
4601 o check for <machine/limits.h> so we build on NetBSD again (I hope).
4602 o don't crash if a conn that sent a begin has suddenly lost its circuit
4603 (this was quite rare).
4606 Changes in version 0.0.6rc1 - 2004-04-25
4607 o We now rotate link (tls context) keys and onion keys.
4608 o CREATE cells now include oaep padding, so you can tell
4609 if you decrypted them correctly.
4610 o Add bandwidthburst to server descriptor.
4611 o Directories now say which dirserver signed them.
4612 o Use a tor_assert macro that logs failed assertions too.
4615 Changes in version 0.0.6pre5 - 2004-04-18
4616 o changes from 0.0.6pre4:
4617 - make tor build on broken freebsd 5.2 installs
4618 - fix a failed assert when you try an intro point, get a nack, and try
4619 a second one and it works.
4620 - when alice uses a port that the hidden service doesn't accept,
4621 it now sends back an end cell (denied by exit policy). otherwise
4622 alice would just have to wait to time out.
4623 - fix another rare bug: when we had tried all the intro
4624 points for a hidden service, we fetched the descriptor
4625 again, but we left our introcirc thinking it had already
4626 sent an intro, so it kept waiting for a response...
4627 - bugfix: when you sleep your hidden-service laptop, as soon
4628 as it wakes up it tries to upload a service descriptor, but
4629 socketpair fails for some reason (localhost not up yet?).
4630 now we simply give up on that upload, and we'll try again later.
4631 i'd still like to find the bug though.
4632 - if an intro circ waiting for an ack dies before getting one, then
4634 - we were reusing stale service descriptors and refetching usable
4638 Changes in version 0.0.6pre4 - 2004-04-14
4639 o changes from 0.0.6pre3:
4640 - when bob fails to connect to the rendezvous point, and his
4641 circ didn't fail because of the rendezvous point itself, then
4642 he retries a couple of times
4643 - we expire introduction and rendezvous circs more thoroughly
4644 (sometimes they were hanging around forever)
4645 - we expire unattached rendezvous streams that have been around
4646 too long (they were sticking around forever).
4647 - fix a measly fencepost error that was crashing everybody with
4651 Changes in version 0.0.6pre3 - 2004-04-14
4652 o changes from 0.0.6pre2:
4653 - make hup work again
4654 - fix some memory leaks for dirservers
4655 - allow more skew in rendezvous descriptor timestamps, to help
4656 handle people like blanu who don't know what time it is
4657 - normal circs are 3 hops, but some rend/intro circs are 4, if
4658 the initiator doesn't get to choose the last hop
4659 - send acks for introductions, so alice can know whether to try
4661 - bob publishes intro points more correctly
4662 o changes from 0.0.5:
4663 - fix an assert trigger that's been plaguing us since the days
4664 of 0.0.2prexx (thanks weasel!)
4665 - retry stream correctly when we fail to connect because of
4666 exit-policy-reject (should try another) or can't-resolve-address
4667 (also should try another, because dns on random internet servers
4669 - when we hup a dirserver and we've *removed* a server from the
4670 approved-routers list, now we remove that server from the
4671 in-memory directories too
4674 Changes in version 0.0.6pre2 - 2004-04-08
4675 o We fixed our base32 implementation. Now it works on all architectures.
4678 Changes in version 0.0.6pre1 - 2004-04-08
4680 - Hidden services and rendezvous points are implemented. Go to
4681 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
4682 hidden services. (This only works via a socks4a proxy such as
4683 Privoxy, and currently it's quite slow.)
4686 Changes in version 0.0.5 - 2004-03-30
4690 Changes in version 0.0.5rc3 - 2004-03-29
4691 o Install torrc as torrc.sample -- we no longer clobber your
4693 o Re-enable recommendedversion checking (we broke it in rc2, oops)
4694 o Add in a 'notice' log level for things the operator should hear
4695 but that aren't warnings
4698 Changes in version 0.0.5rc2 - 2004-03-29
4699 o Hold socks connection open until reply is flushed (if possible)
4700 o Make exit nodes resolve IPs to IPs immediately, rather than asking
4701 the dns farm to do it.
4702 o Fix c99 aliasing warnings in rephist.c
4703 o Don't include server descriptors that are older than 24 hours in the
4705 o Give socks 'reject' replies their whole 15s to attempt to flush,
4706 rather than seeing the 60s timeout and assuming the flush had failed.
4707 o Clean automake droppings from the cvs repository
4710 Changes in version 0.0.5rc1 - 2004-03-28
4711 o Fix mangled-state bug in directory fetching (was causing sigpipes).
4712 o Only build circuits after we've fetched the directory: clients were
4713 using only the directory servers before they'd fetched a directory.
4714 This also means longer startup time; so it goes.
4715 o Fix an assert trigger where an OP would fail to handshake, and we'd
4716 expect it to have a nickname.
4717 o Work around a tsocks bug: do a socks reject when AP connection dies
4718 early, else tsocks goes into an infinite loop.
4721 Changes in version 0.0.4 - 2004-03-26
4722 o When connecting to a dirserver or OR and the network is down,
4726 Changes in version 0.0.3 - 2004-03-26
4727 o Warn and fail if server chose a nickname with illegal characters
4728 o Port to Solaris and Sparc:
4729 - include missing header fcntl.h
4730 - have autoconf find -lsocket -lnsl automatically
4731 - deal with hardware word alignment
4732 - make uname() work (solaris has a different return convention)
4733 - switch from using signal() to sigaction()
4734 o Preliminary work on reputation system:
4735 - Keep statistics on success/fail of connect attempts; they're published
4736 by kill -USR1 currently.
4737 - Add a RunTesting option to try to learn link state by creating test
4738 circuits, even when SocksPort is off.
4739 - Remove unused open circuits when there are too many.
4742 Changes in version 0.0.2 - 2004-03-19
4743 - Include strlcpy and strlcat for safer string ops
4744 - define INADDR_NONE so we compile (but still not run) on solaris
4747 Changes in version 0.0.2pre27 - 2004-03-14
4749 - Allow internal tor networks (we were rejecting internal IPs,
4750 now we allow them if they're set explicitly).
4751 - And fix a few endian issues.
4754 Changes in version 0.0.2pre26 - 2004-03-14
4756 - If a stream times out after 15s without a connected cell, don't
4757 try that circuit again: try a new one.
4758 - Retry streams at most 4 times. Then give up.
4759 - When a dirserver gets a descriptor from an unknown router, it
4760 logs its fingerprint (so the dirserver operator can choose to
4761 accept it even without mail from the server operator).
4762 - Inform unapproved servers when we reject their descriptors.
4763 - Make tor build on Windows again. It works as a client, who knows
4765 - Clearer instructions in the torrc for how to set up a server.
4766 - Be more efficient about reading fd's when our global token bucket
4767 (used for rate limiting) becomes empty.
4769 - Stop asserting that computers always go forward in time. It's
4771 - When we sent a cell (e.g. destroy) and then marked an OR connection
4772 expired, we might close it before finishing a flush if the other
4773 side isn't reading right then.
4774 - Don't allow dirservers to start if they haven't defined
4776 - We were caching transient dns failures. Oops.
4777 - Prevent servers from publishing an internal IP as their address.
4778 - Address a strcat vulnerability in circuit.c
4781 Changes in version 0.0.2pre25 - 2004-03-04
4783 - Put the OR's IP in its router descriptor, not its fqdn. That way
4784 we'll stop being stalled by gethostbyname for nodes with flaky dns,
4787 - If the user typed in an address that didn't resolve, the server
4791 Changes in version 0.0.2pre24 - 2004-03-03
4793 - Fix an assertion failure in dns.c, where we were trying to dequeue
4794 a pending dns resolve even if it wasn't pending
4795 - Fix a spurious socks5 warning about still trying to write after the
4796 connection is finished.
4797 - Hold certain marked_for_close connections open until they're finished
4798 flushing, rather than losing bytes by closing them too early.
4799 - Correctly report the reason for ending a stream
4800 - Remove some duplicate calls to connection_mark_for_close
4801 - Put switch_id and start_daemon earlier in the boot sequence, so it
4802 will actually try to chdir() to options.DataDirectory
4803 - Make 'make test' exit(1) if a test fails; fix some unit tests
4804 - Make tor fail when you use a config option it doesn't know about,
4805 rather than warn and continue.
4806 - Make --version work
4807 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
4810 Changes in version 0.0.2pre23 - 2004-02-29
4812 - Print a statement when the first circ is finished, so the user
4814 - If a relay cell is unrecognized at the end of the circuit,
4815 send back a destroy. (So attacks to mutate cells are more
4817 - New config option 'excludenodes' to avoid certain nodes for circuits.
4818 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
4819 so you can collect coredumps there.
4821 - Fix a bug in tls flushing where sometimes data got wedged and
4822 didn't flush until more data got sent. Hopefully this bug was
4823 a big factor in the random delays we were seeing.
4824 - Make 'connected' cells include the resolved IP, so the client
4825 dns cache actually gets populated.
4826 - Disallow changing from ORPort=0 to ORPort>0 on hup.
4827 - When we time-out on a stream and detach from the circuit, send an
4828 end cell down it first.
4829 - Only warn about an unknown router (in exitnodes, entrynodes,
4830 excludenodes) after we've fetched a directory.
4833 Changes in version 0.0.2pre22 - 2004-02-26
4835 - Servers publish less revealing uname information in descriptors.
4836 - More memory tracking and assertions, to crash more usefully when
4838 - If the default torrc isn't there, just use some default defaults.
4839 Plus provide an internal dirservers file if they don't have one.
4840 - When the user tries to use Tor as an http proxy, give them an http
4841 501 failure explaining that we're a socks proxy.
4842 - Dump a new router.desc on hup, to help confused people who change
4843 their exit policies and then wonder why router.desc doesn't reflect
4845 - Clean up the generic tor.sh init script that we ship with.
4847 - If the exit stream is pending on the resolve, and a destroy arrives,
4848 then the stream wasn't getting removed from the pending list. I
4849 think this was the one causing recent server crashes.
4850 - Use a more robust poll on OSX 10.3, since their poll is flaky.
4851 - When it couldn't resolve any dirservers, it was useless from then on.
4852 Now it reloads the RouterFile (or default dirservers) if it has no
4854 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
4855 many users don't even *have* a /usr/local/sbin/.
4858 Changes in version 0.0.2pre21 - 2004-02-18
4860 - There's a ChangeLog file that actually reflects the changelog.
4861 - There's a 'torify' wrapper script, with an accompanying
4862 tor-tsocks.conf, that simplifies the process of using tsocks for
4863 tor. It even has a man page.
4864 - The tor binary gets installed to sbin rather than bin now.
4865 - Retry streams where the connected cell hasn't arrived in 15 seconds
4866 - Clean up exit policy handling -- get the default out of the torrc,
4867 so we can update it without forcing each server operator to fix
4869 - Allow imaps and pop3s in default exit policy
4871 - Prevent picking middleman nodes as the last node in the circuit
4874 Changes in version 0.0.2pre20 - 2004-01-30
4876 - We now have a deb package, and it's in debian unstable. Go to
4878 - I've split the TotalBandwidth option into BandwidthRate (how many
4879 bytes per second you want to allow, long-term) and
4880 BandwidthBurst (how many bytes you will allow at once before the cap
4881 kicks in). This better token bucket approach lets you, say, set
4882 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
4883 performance while not exceeding your monthly bandwidth quota.
4884 - Push out a tls record's worth of data once you've got it, rather
4885 than waiting until you've read everything waiting to be read. This
4886 may improve performance by pipelining better. We'll see.
4887 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
4888 from failed circuits (if they haven't been connected yet) and attach
4890 - Expire old streams that haven't managed to connect. Some day we'll
4891 have them reattach to new circuits instead.
4894 - Fix several memory leaks that were causing servers to become bloated
4896 - Fix a few very rare assert triggers. A few more remain.
4897 - Setuid to User _before_ complaining about running as root.
4900 Changes in version 0.0.2pre19 - 2004-01-07
4902 - Fix deadlock condition in dns farm. We were telling a child to die by
4903 closing the parent's file descriptor to him. But newer children were
4904 inheriting the open file descriptor from the parent, and since they
4905 weren't closing it, the socket never closed, so the child never read
4906 eof, so he never knew to exit. Similarly, dns workers were holding
4907 open other sockets, leading to all sorts of chaos.
4908 - New cleaner daemon() code for forking and backgrounding.
4909 - If you log to a file, it now prints an entry at the top of the
4910 logfile so you know it's working.
4911 - The onionskin challenge length was 30 bytes longer than necessary.
4912 - Started to patch up the spec so it's not quite so out of date.
4915 Changes in version 0.0.2pre18 - 2004-01-02
4917 - Fix endian issues with the 'integrity' field in the relay header.
4918 - Fix a potential bug where connections in state
4919 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
4922 Changes in version 0.0.2pre17 - 2003-12-30
4924 - Made --debuglogfile (or any second log file, actually) work.
4925 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
4926 adversary could force us into an infinite loop.
4929 - Each onionskin handshake now includes a hash of the computed key,
4930 to prove the server's identity and help perfect forward secrecy.
4931 - Changed cell size from 256 to 512 bytes (working toward compatibility
4933 - Changed cell length to 2 bytes, and moved it to the relay header.
4934 - Implemented end-to-end integrity checking for the payloads of
4936 - Separated streamid from 'recognized' (otherwise circuits will get
4937 messed up when we try to have streams exit from the middle). We
4938 use the integrity-checking to confirm that a cell is addressed to
4940 - Randomize the initial circid and streamid values, so an adversary who
4941 breaks into a node can't learn how many circuits or streams have
4945 Changes in version 0.0.2pre16 - 2003-12-14
4947 - Fixed a bug that made HUP trigger an assert
4948 - Fixed a bug where a circuit that immediately failed wasn't being
4949 counted as a failed circuit in counting retries.
4952 - Now we close the circuit when we get a truncated cell: otherwise we're
4953 open to an anonymity attack where a bad node in the path truncates
4954 the circuit and then we open streams at him.
4955 - Add port ranges to exit policies
4956 - Add a conservative default exit policy
4957 - Warn if you're running tor as root
4958 - on HUP, retry OR connections and close/rebind listeners
4959 - options.EntryNodes: try these nodes first when picking the first node
4960 - options.ExitNodes: if your best choices happen to include any of
4961 your preferred exit nodes, you choose among just those preferred
4963 - options.ExcludedNodes: nodes that are never picked in path building
4966 Changes in version 0.0.2pre15 - 2003-12-03
4967 o Robustness and bugfixes:
4968 - Sometimes clients would cache incorrect DNS resolves, which would
4969 really screw things up.
4970 - An OP that goes offline would slowly leak all its sockets and stop
4972 - A wide variety of bugfixes in exit node selection, exit policy
4973 handling, and processing pending streams when a new circuit is
4975 - Pick nodes for a path only from those the directory says are up
4976 - Choose randomly from all running dirservers, not always the first one
4977 - Increase allowed http header size for directory fetch.
4978 - Stop writing to stderr (if we're daemonized it will be closed).
4979 - Enable -g always, so cores will be more useful to me.
4980 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
4983 - Wrote a man page. It lists commonly used options.
4986 - Change default loglevel to warn.
4987 - Make PidFile default to null rather than littering in your CWD.
4988 - OnionRouter config option is now obsolete. Instead it just checks
4990 - Moved to a single unified torrc file for both clients and servers.
4993 Changes in version 0.0.2pre14 - 2003-11-29
4994 o Robustness and bugfixes:
4995 - Force the admin to make the DataDirectory himself
4996 - to get ownership/permissions right
4997 - so clients no longer make a DataDirectory and then never use it
4998 - fix bug where a client who was offline for 45 minutes would never
4999 pull down a directory again
5000 - fix (or at least hide really well) the dns assert bug that was
5001 causing server crashes
5002 - warnings and improved robustness wrt clockskew for certs
5003 - use the native daemon(3) to daemonize, when available
5004 - exit if bind() fails
5005 - exit if neither socksport nor orport is defined
5006 - include our own tor_timegm (Win32 doesn't have its own)
5007 - bugfix for win32 with lots of connections
5008 - fix minor bias in PRNG
5009 - make dirserver more robust to corrupt cached directory
5012 - Wrote the design document (woo)
5014 o Circuit building and exit policies:
5015 - Circuits no longer try to use nodes that the directory has told them
5017 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
5018 bitcounts (18.0.0.0/8).
5019 - Make AP connections standby for a circuit if no suitable circuit
5020 exists, rather than failing
5021 - Circuits choose exit node based on addr/port, exit policies, and
5022 which AP connections are standing by
5023 - Bump min pathlen from 2 to 3
5024 - Relay end cells have a payload to describe why the stream ended.
5025 - If the stream failed because of exit policy, try again with a new
5027 - Clients have a dns cache to remember resolved addresses.
5028 - Notice more quickly when we have no working circuits
5031 - APPort is now called SocksPort
5032 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
5034 - RecommendedVersions is now a config variable rather than
5035 hardcoded (for dirservers)
5036 - Reloads config on HUP
5037 - Usage info on -h or --help
5038 - If you set User and Group config vars, it'll setu/gid to them.
5040 Changes in version 0.0.2pre13 - 2003-10-19
5041 o General stability:
5042 - SSL_write no longer fails when it returns WANTWRITE and the number
5043 of bytes in the buf has changed by the next SSL_write call.
5044 - Fix segfault fetching directory when network is down
5045 - Fix a variety of minor memory leaks
5046 - Dirservers reload the fingerprints file on HUP, so I don't have
5047 to take down the network when I approve a new router
5048 - Default server config file has explicit Address line to specify fqdn
5051 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
5052 - Make listener connections not ever alloc bufs
5054 o Autoconf improvements:
5055 - don't clobber an external CFLAGS in ./configure
5056 - Make install now works
5057 - create var/lib/tor on make install
5058 - autocreate a tor.sh initscript to help distribs
5059 - autocreate the torrc and sample-server-torrc with correct paths
5061 o Log files and Daemonizing now work:
5062 - If --DebugLogFile is specified, log to it at -l debug
5063 - If --LogFile is specified, use it instead of commandline
5064 - If --RunAsDaemon is set, tor forks and backgrounds on startup