1 Changes in version 0.2.1.6-alpha - 2008-09-xx
3 - Implement proposal 121: make it possible to build hidden services
4 that only certain clients are allowed to connect to. This is
5 enforced at several points, so that unauthorized clients are
6 unable to send INTRODUCE cells to the service, or even (depending
7 on the type of authentication) to learn introduction points. This
8 feature raises the bar for certain kinds of active attacks against
12 - Fix a bug when parsing ports in tor_addr_port_parse() that caused
13 Tor to fail to start if you had it configured to use a bridge
14 relay. Fixes bug 809. Bugfix on 0.2.1.5-alpha.
15 - When extending a circuit to a hidden service directory to upload a
16 rendezvous descriptor using a BEGIN_DIR cell, almost 1/6 of all
17 requests failed, because the router descriptor has not been
18 downloaded yet. In these cases, do not attempt to upload the
19 rendezvous descriptor, but wait until the router descriptor is
20 downloaded and retry. Likewise, do not attempt to fetch a rendezvous
21 descriptor from a hidden service directory for which the router
22 descriptor has not yet been downloaded. Fixes bug 767. Bugfix
24 - When fetching v0 and v2 rendezvous service descriptors in parallel,
25 we were failing the whole hidden service request when the v0
26 descriptor fetch fails, even if the v2 fetch is still pending and
27 might succeed. Similarly, if the last v2 fetch fails, we were
28 failing the whole hidden service request even if a v0 fetch is
29 still pending. Fixes bug 814. Bugfix on 0.2.0.10-alpha.
30 - DNS replies need to have names matching their requests, but
31 these names should be in the questions section, not necessarily
32 in the answers section. Fixes bug 823. Bugfix on 0.2.1.5-alpha.
35 - Relays now store and serve v2 hidden service descriptors by default
36 (i.e. new default value for HidServDirectoryV2 is 1). This is the
37 last step in proposal 114, which aims to make hidden service
38 connections more reliable.
41 - Fix compile on OpenBSD 4.4-current. Bugfix on 0.2.1.5-alpha.
43 - Fixed some memory leaks -- some quite frequent, some almost
44 impossible to trigger -- based on results from Coverity.
45 - When testing for libevent functions, set the LDFLAGS variable
46 correctly. Found by Riastradh.
47 - Fix an assertion bug in parsing policy-related options; possible fix
49 - Catch and report a few more bootstrapping failure cases when Tor
50 fails to establish a TCP connection. Cleanup on 0.2.1.x.
51 - Avoid a bug where the FastFirstHopPK 0 option would keep Tor from
52 bootstrapping with tunneled directory connections. Bugfix on
53 0.1.2.5-alpha. Fixes bug 797. Found by Erwin Lam.
54 - When asked to connect to A.B.exit:80, if we don't know the IP for A
55 and we know that server B rejects most-but-not all connections to
56 port 80, we would previously reject the connection. Now, we assume
57 the user knows what they were asking for. Fixes bug 752. Bugfix
58 on 0.0.9rc5. Diagnosed by BarkerJr.
59 - If we are not using BEGIN_DIR cells, don't attempt to contact hidden
60 service directories with non-open dir port. Bugfix on 0.2.0.10-alpha.
63 - Update to the "September 1 2008" ip-to-country file.
64 - Allow ports 465 and 587 in the default exit policy again. We had
65 rejected them in 0.1.0.15, because back in 2005 they were commonly
66 misconfigured and ended up as spam targets. We hear they are better
67 locked down these days.
68 - Use a lockfile to make sure that two Tor processes are not
69 simultaneously running with the same datadir.
70 - Serve the latest v3 networkstatus consensus via the control
71 port. Use "getinfo dir/status-vote/current/consensus" to fetch it.
72 - Better logging about stability/reliability calculations on directory
74 - Drop the requirement to have an open dir port for storing and serving
75 v2 hidden service descriptors.
77 o Code simplifications and refactoring:
78 - Revise the connection_new functions so that a more typesafe variant
79 exists. This will work better with Coverity, and let us find any
80 actual mistakes we're making here.
81 - Refactor unit testing logic so that dmalloc can be used sensibly
82 with unit tests to check for memory leaks.
83 - Move all hidden-service related fields from connection and circuit
84 structure to substructures: this way they won't eat so much memory.
87 Changes in version 0.2.0.31 - 2008-09-03
88 Tor 0.2.0.31 addresses two potential anonymity issues, starts to fix
89 a big bug we're seeing where in rare cases traffic from one Tor stream
90 gets mixed into another stream, and fixes a variety of smaller issues.
93 - Make sure that two circuits can never exist on the same connection
94 with the same circuit ID, even if one is marked for close. This
95 is conceivably a bugfix for bug 779. Bugfix on 0.1.0.4-rc.
96 - Relays now reject risky extend cells: if the extend cell includes
97 a digest of all zeroes, or asks to extend back to the relay that
98 sent the extend cell, tear down the circuit. Ideas suggested
100 - If not enough of our entry guards are available so we add a new
101 one, we might use the new one even if it overlapped with the
102 current circuit's exit relay (or its family). Anonymity bugfix
106 - Recover 3-7 bytes that were wasted per memory chunk. Fixes bug
107 794; bug spotted by rovv. Bugfix on 0.2.0.1-alpha.
108 - Correctly detect the presence of the linux/netfilter_ipv4.h header
109 when building against recent kernels. Bugfix on 0.1.2.1-alpha.
110 - Pick size of default geoip filename string correctly on windows.
111 Fixes bug 806. Bugfix on 0.2.0.30.
112 - Make the autoconf script accept the obsolete --with-ssl-dir
113 option as an alias for the actually-working --with-openssl-dir
114 option. Fix the help documentation to recommend --with-openssl-dir.
115 Based on a patch by "Dave". Bugfix on 0.2.0.1-alpha.
116 - Disallow session resumption attempts during the renegotiation
117 stage of the v2 handshake protocol. Clients should never be trying
118 session resumption at this point, but apparently some did, in
119 ways that caused the handshake to fail. Bug found by Geoff Goodell.
120 Bugfix on 0.2.0.20-rc.
121 - When using the TransPort option on OpenBSD, and using the User
122 option to change UID and drop privileges, make sure to open
123 /dev/pf before dropping privileges. Fixes bug 782. Patch from
124 Christopher Davis. Bugfix on 0.1.2.1-alpha.
125 - Try to attach connections immediately upon receiving a RENDEZVOUS2
126 or RENDEZVOUS_ESTABLISHED cell. This can save a second or two
127 on the client side when connecting to a hidden service. Bugfix
128 on 0.0.6pre1. Found and fixed by Christian Wilms; resolves bug 743.
129 - When closing an application-side connection because its circuit is
130 getting torn down, generate the stream event correctly. Bugfix on
131 0.1.2.x. Anonymous patch.
134 Changes in version 0.2.1.5-alpha - 2008-08-31
135 Tor 0.2.1.5-alpha moves us closer to handling IPv6 destinations, puts
136 in a lot of the infrastructure for adding authorization to hidden
137 services, lays the groundwork for having clients read their load
138 balancing information out of the networkstatus consensus rather than
139 the individual router descriptors, addresses two potential anonymity
140 issues, and fixes a variety of smaller issues.
143 - Convert many internal address representations to optionally hold
145 - Generate and accept IPv6 addresses in many protocol elements.
146 - Make resolver code handle nameservers located at ipv6 addresses.
147 - Begin implementation of proposal 121 ("Client authorization for
148 hidden services"): configure hidden services with client
149 authorization, publish descriptors for them, and configure
150 authorization data for hidden services at clients. The next
151 step is to actually access hidden services that perform client
153 - More progress toward proposal 141: Network status consensus
154 documents and votes now contain bandwidth information for each
155 router and a summary of that router's exit policy. Eventually this
156 will be used by clients so that they do not have to download every
157 known descriptor before building circuits.
159 o Major bugfixes (on 0.2.0.x and before):
160 - When sending CREATED cells back for a given circuit, use a 64-bit
161 connection ID to find the right connection, rather than an addr:port
162 combination. Now that we can have multiple OR connections between
163 the same ORs, it is no longer possible to use addr:port to uniquely
164 identify a connection.
165 - Relays now reject risky extend cells: if the extend cell includes
166 a digest of all zeroes, or asks to extend back to the relay that
167 sent the extend cell, tear down the circuit. Ideas suggested
169 - If not enough of our entry guards are available so we add a new
170 one, we might use the new one even if it overlapped with the
171 current circuit's exit relay (or its family). Anonymity bugfix
175 - Recover 3-7 bytes that were wasted per memory chunk. Fixes bug
176 794; bug spotted by rovv. Bugfix on 0.2.0.1-alpha.
177 - When using the TransPort option on OpenBSD, and using the User
178 option to change UID and drop privileges, make sure to open /dev/pf
179 before dropping privileges. Fixes bug 782. Patch from Christopher
180 Davis. Bugfix on 0.1.2.1-alpha.
181 - Correctly detect the presence of the linux/netfilter_ipv4.h header
182 when building against recent kernels. Bugfix on 0.1.2.1-alpha.
183 - Add a missing safe_str() call for a debug log message.
184 - Use 64 bits instead of 32 bits for connection identifiers used with
185 the controller protocol, to greatly reduce risk of identifier reuse.
186 - Make the autoconf script accept the obsolete --with-ssl-dir
187 option as an alias for the actually-working --with-openssl-dir
188 option. Fix the help documentation to recommend --with-openssl-dir.
189 Based on a patch by "Dave". Bugfix on 0.2.0.1-alpha.
192 - Rate-limit too-many-sockets messages: when they happen, they happen
193 a lot. Resolves bug 748.
194 - Resist DNS poisoning a little better by making sure that names in
195 answer sections match.
196 - Print the SOCKS5 error message string as well as the error code
197 when a tor-resolve request fails. Patch from Jacob.
200 Changes in version 0.2.1.4-alpha - 2008-08-04
201 Tor 0.2.1.4-alpha fixes a pair of crash bugs in 0.2.1.3-alpha.
204 - The address part of exit policies was not correctly written
205 to router descriptors. This generated router descriptors that failed
206 their self-checks. Noticed by phobos, fixed by Karsten. Bugfix
208 - Tor triggered a false assert when extending a circuit to a relay
209 but we already have a connection open to that relay. Noticed by
210 phobos, fixed by Karsten. Bugfix on 0.2.1.3-alpha.
213 - Fix a hidden service logging bug: in some edge cases, the router
214 descriptor of a previously picked introduction point becomes
215 obsolete and we need to give up on it rather than continually
216 complaining that it has become obsolete. Observed by xiando. Bugfix
220 - Take out the TestVia config option, since it was a workaround for
221 a bug that was fixed in Tor 0.1.1.21.
224 Changes in version 0.2.1.3-alpha - 2008-08-03
225 Tor 0.2.1.3-alpha implements most of the pieces to prevent
226 infinite-length circuit attacks (see proposal 110); fixes a bug that
227 might cause exit relays to corrupt streams they send back; allows
228 address patterns (e.g. 255.128.0.0/16) to appear in ExcludeNodes and
229 ExcludeExitNodes config options; and fixes a big pile of bugs.
231 o Bootstrapping bugfixes (on 0.2.1.x-alpha):
232 - Send a bootstrap problem "warn" event on the first problem if the
233 reason is NO_ROUTE (that is, our network is down).
236 - Implement most of proposal 110: The first K cells to be sent
237 along a circuit are marked as special "early" cells; only K "early"
238 cells will be allowed. Once this code is universal, we can block
239 certain kinds of DOS attack by requiring that EXTEND commands must
240 be sent using an "early" cell.
243 - Try to attach connections immediately upon receiving a RENDEZVOUS2
244 or RENDEZVOUS_ESTABLISHED cell. This can save a second or two
245 on the client side when connecting to a hidden service. Bugfix
246 on 0.0.6pre1. Found and fixed by Christian Wilms; resolves bug 743.
247 - Ensure that two circuits can never exist on the same connection
248 with the same circuit ID, even if one is marked for close. This
249 is conceivably a bugfix for bug 779; fixes a bug on 0.1.0.4-rc.
252 - When relays do their initial bandwidth measurement, don't limit
253 to just our entry guards for the test circuits. Otherwise we tend
254 to have multiple test circuits going through a single entry guard,
255 which makes our bandwidth test less accurate. Fixes part of bug 654;
256 patch contributed by Josh Albrecht.
257 - Add an ExcludeExitNodes option so users can list a set of nodes
258 that should be be excluded from the exit node position, but
259 allowed elsewhere. Implements proposal 151.
260 - Allow address patterns (e.g., 255.128.0.0/16) to appear in
261 ExcludeNodes and ExcludeExitNodes lists.
262 - Change the implementation of ExcludeNodes and ExcludeExitNodes to
263 be more efficient. Formerly it was quadratic in the number of
264 servers; now it should be linear. Fixes bug 509.
265 - Save 16-22 bytes per open circuit by moving the n_addr, n_port,
266 and n_conn_id_digest fields into a separate structure that's
267 only needed when the circuit has not yet attached to an n_conn.
270 - Change the contrib/tor.logrotate script so it makes the new
271 logs as "_tor:_tor" rather than the default, which is generally
272 "root:wheel". Fixes bug 676, reported by Serge Koksharov.
273 - Stop using __attribute__((nonnull)) with GCC: it can give us useful
274 warnings (occasionally), but it can also cause the compiler to
275 eliminate error-checking code. Suggested by Peter Gutmann.
276 - When a hidden service is giving up on an introduction point candidate
277 that was not included in the last published rendezvous descriptor,
278 don't reschedule publication of the next descriptor. Fixes bug 763.
280 - Mark RendNodes, RendExcludeNodes, HiddenServiceNodes, and
281 HiddenServiceExcludeNodes as obsolete: they never worked properly,
282 and nobody claims to be using them. Fixes bug 754. Bugfix on
283 0.1.0.1-rc. Patch from Christian Wilms.
284 - Fix a small alignment and memory-wasting bug on buffer chunks.
287 o Minor bugfixes (controller):
288 - When closing an application-side connection because its circuit
289 is getting torn down, generate the stream event correctly.
290 Bugfix on 0.1.2.x. Anonymous patch.
293 - Remove all backward-compatibility code to support relays running
294 versions of Tor so old that they no longer work at all on the
298 Changes in version 0.2.0.29-rc - 2008-07-08
299 Tor 0.2.0.29-rc fixes two big bugs with using bridges, fixes more
300 hidden-service performance bugs, and fixes a bunch of smaller bugs.
303 - If you have more than one bridge but don't know their keys,
304 you would only launch a request for the descriptor of the first one
305 on your list. (Tor considered launching requests for the others, but
306 found that it already had a connection on the way for $0000...0000
307 so it didn't open another.) Bugfix on 0.2.0.x.
308 - If you have more than one bridge but don't know their keys, and the
309 connection to one of the bridges failed, you would cancel all
310 pending bridge connections. (After all, they all have the same
311 digest.) Bugfix on 0.2.0.x.
312 - When a hidden service was trying to establish an introduction point,
313 and Tor had built circuits preemptively for such purposes, we
314 were ignoring all the preemptive circuits and launching a new one
315 instead. Bugfix on 0.2.0.14-alpha.
316 - When a hidden service was trying to establish an introduction point,
317 and Tor *did* manage to reuse one of the preemptively built
318 circuits, it didn't correctly remember which one it used,
319 so it asked for another one soon after, until there were no
320 more preemptive circuits, at which point it launched one from
321 scratch. Bugfix on 0.0.9.x.
322 - Make directory servers include the X-Your-Address-Is: http header in
323 their responses even for begin_dir conns. Now clients who only
324 ever use begin_dir connections still have a way to learn their IP
325 address. Fixes bug 737; bugfix on 0.2.0.22-rc. Reported by goldy.
328 - Fix a macro/CPP interaction that was confusing some compilers:
329 some GCCs don't like #if/#endif pairs inside macro arguments.
331 - Fix macro collision between OpenSSL 0.9.8h and Windows headers.
332 Fixes bug 704; fix from Steven Murdoch.
333 - When opening /dev/null in finish_daemonize(), do not pass the
334 O_CREAT flag. Fortify was complaining, and correctly so. Fixes
335 bug 742; fix from Michael Scherer. Bugfix on 0.0.2pre19.
336 - Correctly detect transparent proxy support on Linux hosts that
337 require in.h to be included before netfilter_ipv4.h. Patch
339 - Disallow session resumption attempts during the renegotiation
340 stage of the v2 handshake protocol. Clients should never be trying
341 session resumption at this point, but apparently some did, in
342 ways that caused the handshake to fail. Bugfix on 0.2.0.20-rc. Bug
343 found by Geoff Goodell.
346 Changes in version 0.2.1.2-alpha - 2008-06-20
347 Tor 0.2.1.2-alpha includes a new "TestingTorNetwork" config option to
348 make it easier to set up your own private Tor network; fixes several
349 big bugs with using more than one bridge relay; fixes a big bug with
350 offering hidden services quickly after Tor starts; and uses a better
351 API for reporting potential bootstrapping problems to the controller.
354 - New TestingTorNetwork config option to allow adjustment of
355 previously constant values that, while reasonable, could slow
356 bootstrapping. Implements proposal 135. Patch from Karsten.
359 - If you have more than one bridge but don't know their digests,
360 you would only learn a request for the descriptor of the first one
361 on your list. (Tor considered launching requests for the others, but
362 found that it already had a connection on the way for $0000...0000
363 so it didn't open another.) Bugfix on 0.2.0.x.
364 - If you have more than one bridge but don't know their digests,
365 and the connection to one of the bridges failed, you would cancel
366 all pending bridge connections. (After all, they all have the
367 same digest.) Bugfix on 0.2.0.x.
368 - When establishing a hidden service, introduction points that
369 originate from cannibalized circuits are completely ignored and not
370 included in rendezvous service descriptors. This might be another
371 reason for delay in making a hidden service available. Bugfix
372 from long ago (0.0.9.x?)
375 - Allow OpenSSL to use dynamic locks if it wants.
376 - When building a consensus, do not include routers that are down.
377 This will cut down 30% to 40% on consensus size. Implements
379 - In directory authorities' approved-routers files, allow
380 fingerprints with or without space.
381 - Add a "GETINFO /status/bootstrap-phase" controller option, so the
382 controller can query our current bootstrap state in case it attaches
383 partway through and wants to catch up.
384 - Send an initial "Starting" bootstrap status event, so we have a
385 state to start out in.
388 - Asking for a conditional consensus at .../consensus/<fingerprints>
389 would crash a dirserver if it did not already have a
390 consensus. Bugfix on 0.2.1.1-alpha.
391 - Clean up some macro/CPP interactions: some GCC versions don't like
392 #if/#endif pairs inside macro arguments. Fixes bug 707. Bugfix on
395 o Bootstrapping bugfixes (on 0.2.1.1-alpha):
396 - Directory authorities shouldn't complain about bootstrapping
397 problems just because they do a lot of reachability testing and
398 some of the connection attempts fail.
399 - Start sending "count" and "recommendation" key/value pairs in
400 bootstrap problem status events, so the controller can hear about
401 problems even before Tor decides they're worth reporting for sure.
402 - If you're using bridges, generate "bootstrap problem" warnings
403 as soon as you run out of working bridges, rather than waiting
404 for ten failures -- which will never happen if you have less than
406 - If we close our OR connection because there's been a circuit
407 pending on it for too long, we were telling our bootstrap status
408 events "REASON=NONE". Now tell them "REASON=TIMEOUT".
411 Changes in version 0.2.1.1-alpha - 2008-06-13
412 Tor 0.2.1.1-alpha fixes a lot of memory fragmentation problems that
413 were making the Tor process bloat especially on Linux; makes our TLS
414 handshake blend in better; sends "bootstrap phase" status events to
415 the controller, so it can keep the user informed of progress (and
416 problems) fetching directory information and establishing circuits;
417 and adds a variety of smaller features.
420 - More work on making our TLS handshake blend in: modify the list
421 of ciphers advertised by OpenSSL in client mode to even more
422 closely resemble a common web browser. We cheat a little so that
423 we can advertise ciphers that the locally installed OpenSSL doesn't
425 - Start sending "bootstrap phase" status events to the controller,
426 so it can keep the user informed of progress fetching directory
427 information and establishing circuits. Also inform the controller
428 if we think we're stuck at a particular bootstrap phase. Implements
430 - Resume using OpenSSL's RAND_poll() for better (and more portable)
431 cross-platform entropy collection again. We used to use it, then
432 stopped using it because of a bug that could crash systems that
433 called RAND_poll when they had a lot of fds open. It looks like the
434 bug got fixed in late 2006. Our new behavior is to call RAND_poll()
435 at startup, and to call RAND_poll() when we reseed later only if
436 we have a non-buggy OpenSSL version.
439 - When we choose to abandon a new entry guard because we think our
440 older ones might be better, close any circuits pending on that
441 new entry guard connection. This fix should make us recover much
442 faster when our network is down and then comes back. Bugfix on
443 0.1.2.8-beta; found by lodger.
445 o Memory fixes and improvements:
446 - Add a malloc_good_size implementation to OpenBSD_malloc_linux.c,
447 to avoid unused RAM in buffer chunks and memory pools.
448 - Speed up parsing and cut down on memory fragmentation by using
449 stack-style allocations for parsing directory objects. Previously,
450 this accounted for over 40% of allocations from within Tor's code
451 on a typical directory cache.
452 - Use a Bloom filter rather than a digest-based set to track which
453 descriptors we need to keep around when we're cleaning out old
454 router descriptors. This speeds up the computation significantly,
455 and may reduce fragmentation.
456 - Reduce the default smartlist size from 32 to 16; it turns out that
457 most smartlists hold around 8-12 elements tops.
458 - Make dumpstats() log the fullness and size of openssl-internal
460 - If the user has applied the experimental SSL_MODE_RELEASE_BUFFERS
461 patch to their OpenSSL, turn it on to save memory on servers. This
462 patch will (with any luck) get included in a mainline distribution
464 - Never use OpenSSL compression: it wastes RAM and CPU trying to
465 compress cells, which are basically all encrypted, compressed,
469 - Stop reloading the router list from disk for no reason when we
470 run out of reachable directory mirrors. Once upon a time reloading
471 it would set the 'is_running' flag back to 1 for them. It hasn't
472 done that for a long time.
473 - In very rare situations new hidden service descriptors were
474 published earlier than 30 seconds after the last change to the
475 service. (We currently think that a hidden service descriptor
476 that's been stable for 30 seconds is worth publishing.)
479 - Allow separate log levels to be configured for different logging
480 domains. For example, this allows one to log all notices, warnings,
481 or errors, plus all memory management messages of level debug or
482 higher, with: Log [MM] debug-err [*] notice-err file /var/log/tor.
483 - Add a couple of extra warnings to --enable-gcc-warnings for GCC 4.3,
484 and stop using a warning that had become unfixably verbose under
486 - New --hush command-line option similar to --quiet. While --quiet
487 disables all logging to the console on startup, --hush limits the
488 output to messages of warning and error severity.
489 - Servers support a new URL scheme for consensus downloads that
490 allows the client to specify which authorities are trusted.
491 The server then only sends the consensus if the client will trust
492 it. Otherwise a 404 error is sent back. Clients use this
493 new scheme when the server supports it (meaning it's running
494 0.2.1.1-alpha or later). Implements proposal 134.
495 - New configure/torrc options (--enable-geoip-stats,
496 DirRecordUsageByCountry) to record how many IPs we've served
497 directory info to in each country code, how many status documents
498 total we've sent to each country code, and what share of the total
499 directory requests we should expect to see.
500 - Use the TLS1 hostname extension to more closely resemble browser
502 - Lots of new unit tests.
503 - Add a macro to implement the common pattern of iterating through
504 two parallel lists in lockstep.
507 Changes in version 0.2.0.28-rc - 2008-06-13
508 Tor 0.2.0.28-rc fixes an anonymity-related bug, fixes a hidden-service
509 performance bug, and fixes a bunch of smaller bugs.
512 - Fix a bug where, when we were choosing the 'end stream reason' to
513 put in our relay end cell that we send to the exit relay, Tor
514 clients on Windows were sometimes sending the wrong 'reason'. The
515 anonymity problem is that exit relays may be able to guess whether
516 the client is running Windows, thus helping partition the anonymity
517 set. Down the road we should stop sending reasons to exit relays,
518 or otherwise prevent future versions of this bug.
521 - While setting up a hidden service, some valid introduction circuits
522 were overlooked and abandoned. This might be the reason for
523 the long delay in making a hidden service available. Bugfix on
527 - Update to the "June 9 2008" ip-to-country file.
528 - Run 'make test' as part of 'make dist', so we stop releasing so
529 many development snapshots that fail their unit tests.
532 - When we're checking if we have enough dir info for each relay
533 to begin establishing circuits, make sure that we actually have
534 the descriptor listed in the consensus, not just any descriptor.
536 - Bridge relays no longer print "xx=0" in their extrainfo document
537 for every single country code in the geoip db. Bugfix on
539 - Only warn when we fail to load the geoip file if we were planning to
540 include geoip stats in our extrainfo document. Bugfix on 0.2.0.27-rc.
541 - If we change our MaxAdvertisedBandwidth and then reload torrc,
542 Tor won't realize it should publish a new relay descriptor. Fixes
543 bug 688, reported by mfr. Bugfix on 0.1.2.x.
544 - When we haven't had any application requests lately, don't bother
545 logging that we have expired a bunch of descriptors. Bugfix
547 - Make relay cells written on a connection count as non-padding when
548 tracking how long a connection has been in use. Bugfix on
549 0.2.0.1-alpha. Spotted by lodger.
550 - Fix unit tests in 0.2.0.27-rc.
551 - Fix compile on Windows.
554 Changes in version 0.2.0.27-rc - 2008-06-03
555 Tor 0.2.0.27-rc adds a few features we left out of the earlier
556 release candidates. In particular, we now include an IP-to-country
557 GeoIP database, so controllers can easily look up what country a
558 given relay is in, and so bridge relays can give us some sanitized
559 summaries about which countries are making use of bridges. (See proposal
560 126-geoip-fetching.txt for details.)
563 - Include an IP-to-country GeoIP file in the tarball, so bridge
564 relays can report sanitized summaries of the usage they're seeing.
567 - Add a "PURPOSE=" argument to "STREAM NEW" events, as suggested by
568 Robert Hogan. Fixes the first part of bug 681.
569 - Make bridge authorities never serve extrainfo docs.
570 - Add support to detect Libevent versions in the 1.4.x series
572 - Fix build on gcc 4.3 with --enable-gcc-warnings set.
573 - Include a new contrib/tor-exit-notice.html file that exit relay
574 operators can put on their website to help reduce abuse queries.
577 - When tunneling an encrypted directory connection, and its first
578 circuit fails, do not leave it unattached and ask the controller
579 to deal. Fixes the second part of bug 681.
580 - Make bridge authorities correctly expire old extrainfo documents
584 Changes in version 0.2.0.26-rc - 2008-05-13
585 Tor 0.2.0.26-rc fixes a major security vulnerability caused by a bug
586 in Debian's OpenSSL packages. All users running any 0.2.0.x version
587 should upgrade, whether they're running Debian or not.
589 o Major security fixes:
590 - Use new V3 directory authority keys on the tor26, gabelmoo, and
591 moria1 V3 directory authorities. The old keys were generated with
592 a vulnerable version of Debian's OpenSSL package, and must be
593 considered compromised. Other authorities' keys were not generated
594 with an affected version of OpenSSL.
597 - List authority signatures as "unrecognized" based on DirServer
598 lines, not on cert cache. Bugfix on 0.2.0.x.
601 - Add a new V3AuthUseLegacyKey option to make it easier for
602 authorities to change their identity keys if they have to.
605 Changes in version 0.2.0.25-rc - 2008-04-23
606 Tor 0.2.0.25-rc makes Tor work again on OS X and certain BSDs.
609 - Remember to initialize threading before initializing logging.
610 Otherwise, many BSD-family implementations will crash hard on
611 startup. Fixes bug 671. Bugfix on 0.2.0.24-rc.
614 - Authorities correctly free policies on bad servers on
615 exit. Fixes bug 672. Bugfix on 0.2.0.x.
618 Changes in version 0.2.0.24-rc - 2008-04-22
619 Tor 0.2.0.24-rc adds dizum (run by Alex de Joode) as the new sixth
620 v3 directory authority, makes relays with dynamic IP addresses and no
621 DirPort notice more quickly when their IP address changes, fixes a few
622 rare crashes and memory leaks, and fixes a few other miscellaneous bugs.
624 o New directory authorities:
625 - Take lefkada out of the list of v3 directory authorities, since
626 it has been down for months.
627 - Set up dizum (run by Alex de Joode) as the new sixth v3 directory
631 - Detect address changes more quickly on non-directory mirror
632 relays. Bugfix on 0.2.0.18-alpha; fixes bug 652.
634 o Minor features (security):
635 - Reject requests for reverse-dns lookup of names that are in
636 a private address space. Patch from lodger.
637 - Non-exit relays no longer allow DNS requests. Fixes bug 619. Patch
640 o Minor bugfixes (crashes):
641 - Avoid a rare assert that can trigger when Tor doesn't have much
642 directory information yet and it tries to fetch a v2 hidden
643 service descriptor. Fixes bug 651, reported by nwf.
644 - Initialize log mutex before initializing dmalloc. Otherwise,
645 running with dmalloc would crash. Bugfix on 0.2.0.x-alpha.
646 - Use recursive pthread mutexes in order to avoid deadlock when
647 logging debug-level messages to a controller. Bug spotted by nwf,
648 bugfix on 0.2.0.16-alpha.
650 o Minor bugfixes (resource management):
651 - Keep address policies from leaking memory: start their refcount
652 at 1, not 2. Bugfix on 0.2.0.16-alpha.
653 - Free authority certificates on exit, so they don't look like memory
654 leaks. Bugfix on 0.2.0.19-alpha.
655 - Free static hashtables for policy maps and for TLS connections on
656 shutdown, so they don't look like memory leaks. Bugfix on 0.2.0.x.
657 - Avoid allocating extra space when computing consensuses on 64-bit
658 platforms. Bug spotted by aakova.
660 o Minor bugfixes (misc):
661 - Do not read the configuration file when we've only been told to
662 generate a password hash. Fixes bug 643. Bugfix on 0.0.9pre5. Fix
663 based on patch from Sebastian Hahn.
664 - Exit relays that are used as a client can now reach themselves
665 using the .exit notation, rather than just launching an infinite
666 pile of circuits. Fixes bug 641. Reported by Sebastian Hahn.
667 - When attempting to open a logfile fails, tell us why.
668 - Fix a dumb bug that was preventing us from knowing that we should
669 preemptively build circuits to handle expected directory requests.
670 Fixes bug 660. Bugfix on 0.1.2.x.
671 - Warn less verbosely about clock skew from netinfo cells from
672 untrusted sources. Fixes bug 663.
673 - Make controller stream events for DNS requests more consistent,
674 by adding "new stream" events for DNS requests, and removing
675 spurious "stream closed" events" for cached reverse resolves.
676 Patch from mwenge. Fixes bug 646.
677 - Correctly notify one-hop connections when a circuit build has
678 failed. Possible fix for bug 669. Found by lodger.
681 Changes in version 0.2.0.23-rc - 2008-03-24
682 Tor 0.2.0.23-rc is the fourth release candidate for the 0.2.0 series. It
683 makes bootstrapping faster if the first directory mirror you contact
684 is down. The bundles also include the new Vidalia 0.1.2 release.
687 - When a tunneled directory request is made to a directory server
688 that's down, notice after 30 seconds rather than 120 seconds. Also,
689 fail any begindir streams that are pending on it, so they can
690 retry elsewhere. This was causing multi-minute delays on bootstrap.
693 Changes in version 0.2.0.22-rc - 2008-03-18
694 Tor 0.2.0.22-rc is the third release candidate for the 0.2.0 series. It
695 enables encrypted directory connections by default for non-relays, fixes
696 some broken TLS behavior we added in 0.2.0.20-rc, and resolves many
697 other bugs. The bundles also include Vidalia 0.1.1 and Torbutton 1.1.17.
700 - Enable encrypted directory connections by default for non-relays,
701 so censor tools that block Tor directory connections based on their
702 plaintext patterns will no longer work. This means Tor works in
703 certain censored countries by default again.
706 - Make sure servers always request certificates from clients during
707 TLS renegotiation. Reported by lodger; bugfix on 0.2.0.20-rc.
708 - Do not enter a CPU-eating loop when a connection is closed in
709 the middle of client-side TLS renegotiation. Fixes bug 622. Bug
710 diagnosed by lodger; bugfix on 0.2.0.20-rc.
711 - Fix assertion failure that could occur when a blocked circuit
712 became unblocked, and it had pending client DNS requests. Bugfix
713 on 0.2.0.1-alpha. Fixes bug 632.
715 o Minor bugfixes (on 0.1.2.x):
716 - Generate "STATUS_SERVER" events rather than misspelled
717 "STATUS_SEVER" events. Caught by mwenge.
718 - When counting the number of bytes written on a TLS connection,
719 look at the BIO actually used for writing to the network, not
720 at the BIO used (sometimes) to buffer data for the network.
721 Looking at different BIOs could result in write counts on the
722 order of ULONG_MAX. Fixes bug 614.
723 - On Windows, correctly detect errors when listing the contents of
724 a directory. Fix from lodger.
726 o Minor bugfixes (on 0.2.0.x):
727 - Downgrade "sslv3 alert handshake failure" message to INFO.
728 - If we set RelayBandwidthRate and RelayBandwidthBurst very high but
729 left BandwidthRate and BandwidthBurst at the default, we would be
730 silently limited by those defaults. Now raise them to match the
731 RelayBandwidth* values.
732 - Fix the SVK version detection logic to work correctly on a branch.
733 - Make --enable-openbsd-malloc work correctly on Linux with alpha
735 - Logging functions now check that the passed severity is sane.
736 - Use proper log levels in the testsuite call of
737 get_interface_address6().
738 - When using a nonstandard malloc, do not use the platform values for
739 HAVE_MALLOC_GOOD_SIZE or HAVE_MALLOC_USABLE_SIZE.
740 - Make the openbsd malloc code use 8k pages on alpha CPUs and
742 - Detect mismatched page sizes when using --enable-openbsd-malloc.
743 - Avoid double-marked-for-close warning when certain kinds of invalid
744 .in-addr.arpa addresses are passed to the DNSPort. Part of a fix
745 for bug 617. Bugfix on 0.2.0.1-alpha.
746 - Make sure that the "NULL-means-reject *:*" convention is followed by
747 all the policy manipulation functions, avoiding some possible crash
748 bugs. Bug found by lodger. Bugfix on 0.2.0.16-alpha.
749 - Fix the implementation of ClientDNSRejectInternalAddresses so that it
750 actually works, and doesn't warn about every single reverse lookup.
751 Fixes the other part of bug 617. Bugfix on 0.2.0.1-alpha.
754 - Only log guard node status when guard node status has changed.
755 - Downgrade the 3 most common "INFO" messages to "DEBUG". This will
756 make "INFO" 75% less verbose.
759 Changes in version 0.2.0.21-rc - 2008-03-02
760 Tor 0.2.0.21-rc is the second release candidate for the 0.2.0 series. It
761 makes Tor work well with Vidalia again, fixes a rare assert bug,
762 and fixes a pair of more minor bugs. The bundles also include Vidalia
763 0.1.0 and Torbutton 1.1.16.
766 - The control port should declare that it requires password auth
767 when HashedControlSessionPassword is set too. Patch from Matt Edman;
768 bugfix on 0.2.0.20-rc. Fixes bug 615.
769 - Downgrade assert in connection_buckets_decrement() to a log message.
770 This may help us solve bug 614, and in any case will make its
771 symptoms less severe. Bugfix on 0.2.0.20-rc. Reported by fredzupy.
772 - We were sometimes miscounting the number of bytes read from the
773 network, causing our rate limiting to not be followed exactly.
774 Bugfix on 0.2.0.16-alpha. Reported by lodger.
777 - Fix compilation with OpenSSL 0.9.8 and 0.9.8a. All other supported
778 OpenSSL versions should have been working fine. Diagnosis and patch
779 from lodger, Karsten Loesing, and Sebastian Hahn. Fixes bug 616.
780 Bugfix on 0.2.0.20-rc.
783 Changes in version 0.2.0.20-rc - 2008-02-24
784 Tor 0.2.0.20-rc is the first release candidate for the 0.2.0 series. It
785 makes more progress towards normalizing Tor's TLS handshake, makes
786 hidden services work better again, helps relays bootstrap if they don't
787 know their IP address, adds optional support for linking in openbsd's
788 allocator or tcmalloc, allows really fast relays to scale past 15000
789 sockets, and fixes a bunch of minor bugs reported by Veracode.
792 - Enable the revised TLS handshake based on the one designed by
793 Steven Murdoch in proposal 124, as revised in proposal 130. It
794 includes version negotiation for OR connections as described in
795 proposal 105. The new handshake is meant to be harder for censors
796 to fingerprint, and it adds the ability to detect certain kinds of
797 man-in-the-middle traffic analysis attacks. The version negotiation
798 feature will allow us to improve Tor's link protocol more safely
800 - Choose which bridge to use proportional to its advertised bandwidth,
801 rather than uniformly at random. This should speed up Tor for
802 bridge users. Also do this for people who set StrictEntryNodes.
803 - When a TrackHostExits-chosen exit fails too many times in a row,
804 stop using it. Bugfix on 0.1.2.x; fixes bug 437.
807 - Resolved problems with (re-)fetching hidden service descriptors.
808 Patch from Karsten Loesing; fixes problems with 0.2.0.18-alpha
810 - If we only ever used Tor for hidden service lookups or posts, we
811 would stop building circuits and start refusing connections after
812 24 hours, since we falsely believed that Tor was dormant. Reported
813 by nwf; bugfix on 0.1.2.x.
814 - Servers that don't know their own IP address should go to the
815 authorities for their first directory fetch, even if their DirPort
816 is off or if they don't know they're reachable yet. This will help
817 them bootstrap better. Bugfix on 0.2.0.18-alpha; fixes bug 609.
818 - When counting the number of open sockets, count not only the number
819 of sockets we have received from the socket() call, but also
820 the number we've gotten from accept() and socketpair(). This bug
821 made us fail to count all sockets that we were using for incoming
822 connections. Bugfix on 0.2.0.x.
823 - Fix code used to find strings within buffers, when those strings
824 are not in the first chunk of the buffer. Bugfix on 0.2.0.x.
825 - Fix potential segfault when parsing HTTP headers. Bugfix on 0.2.0.x.
826 - Add a new __HashedControlSessionPassword option for controllers
827 to use for one-off session password hashes that shouldn't get
828 saved to disk by SAVECONF --- Vidalia users were accumulating a
829 pile of HashedControlPassword lines in their torrc files, one for
830 each time they had restarted Tor and then clicked Save. Make Tor
831 automatically convert "HashedControlPassword" to this new option but
832 only when it's given on the command line. Partial fix for bug 586.
834 o Minor features (performance):
835 - Tune parameters for cell pool allocation to minimize amount of
837 - Add OpenBSD malloc code from phk as an optional malloc
838 replacement on Linux: some glibc libraries do very poorly
839 with Tor's memory allocation patterns. Pass
840 --enable-openbsd-malloc to get the replacement malloc code.
841 - Add a --with-tcmalloc option to the configure script to link
842 against tcmalloc (if present). Does not yet search for
843 non-system include paths.
844 - Stop imposing an arbitrary maximum on the number of file descriptors
845 used for busy servers. Bug reported by Olaf Selke; patch from
848 o Minor features (other):
849 - When SafeLogging is disabled, log addresses along with all TLS
851 - When building with --enable-gcc-warnings, check for whether Apple's
852 warning "-Wshorten-64-to-32" is available.
853 - Add a --passphrase-fd argument to the tor-gencert command for
856 o Minor bugfixes (memory leaks and code problems):
857 - We were leaking a file descriptor if Tor started with a zero-length
858 cached-descriptors file. Patch by freddy77; bugfix on 0.1.2.
859 - Detect size overflow in zlib code. Reported by Justin Ferguson and
861 - We were comparing the raw BridgePassword entry with a base64'ed
862 version of it, when handling a "/tor/networkstatus-bridges"
863 directory request. Now compare correctly. Noticed by Veracode.
864 - Recover from bad tracked-since value in MTBF-history file.
866 - Alter the code that tries to recover from unhandled write
867 errors, to not try to flush onto a socket that's given us
868 unhandled errors. Bugfix on 0.1.2.x.
869 - Make Unix controlsockets work correctly on OpenBSD. Patch from
870 tup. Bugfix on 0.2.0.3-alpha.
872 o Minor bugfixes (other):
873 - If we have an extra-info document for our server, always make
874 it available on the control port, even if we haven't gotten
875 a copy of it from an authority yet. Patch from mwenge.
876 - Log the correct memory chunk sizes for empty RAM chunks in mempool.c.
877 - Directory mirrors no longer include a guess at the client's IP
878 address if the connection appears to be coming from the same /24
879 network; it was producing too many wrong guesses.
880 - Make the new hidden service code respect the SafeLogging setting.
881 Bugfix on 0.2.0.x. Patch from Karsten.
882 - When starting as an authority, do not overwrite all certificates
883 cached from other authorities. Bugfix on 0.2.0.x. Fixes bug 606.
884 - If we're trying to flush the last bytes on a connection (for
885 example, when answering a directory request), reset the
886 time-to-give-up timeout every time we manage to write something
887 on the socket. Bugfix on 0.1.2.x.
888 - Change the behavior of "getinfo status/good-server-descriptor"
889 so it doesn't return failure when any authority disappears.
890 - Even though the man page said that "TrackHostExits ." should
891 work, nobody had ever implemented it. Bugfix on 0.1.0.x.
892 - Report TLS "zero return" case as a "clean close" and "IO error"
893 as a "close". Stop calling closes "unexpected closes": existing
894 Tors don't use SSL_close(), so having a connection close without
895 the TLS shutdown handshake is hardly unexpected.
896 - Send NAMESERVER_STATUS messages for a single failed nameserver
899 o Code simplifications and refactoring:
900 - Remove the tor_strpartition function: its logic was confused,
901 and it was only used for one thing that could be implemented far
905 Changes in version 0.2.0.19-alpha - 2008-02-09
906 Tor 0.2.0.19-alpha makes more progress towards normalizing Tor's TLS
907 handshake, makes path selection for relays more secure and IP address
908 guessing more robust, and generally fixes a lot of bugs in preparation
909 for calling the 0.2.0 branch stable.
912 - Do not include recognizeable strings in the commonname part of
913 Tor's x509 certificates.
916 - If we're a relay, avoid picking ourselves as an introduction point,
917 a rendezvous point, or as the final hop for internal circuits. Bug
918 reported by taranis and lodger. Bugfix on 0.1.2.x.
919 - Patch from "Andrew S. Lists" to catch when we contact a directory
920 mirror at IP address X and he says we look like we're coming from
921 IP address X. Bugfix on 0.1.2.x.
923 o Minor features (security):
924 - Be more paranoid about overwriting sensitive memory on free(),
925 as a defensive programming tactic to ensure forward secrecy.
927 o Minor features (directory authority):
928 - Actually validate the options passed to AuthDirReject,
929 AuthDirInvalid, AuthDirBadDir, and AuthDirBadExit.
930 - Reject router descriptors with out-of-range bandwidthcapacity or
931 bandwidthburst values.
933 o Minor features (controller):
934 - Reject controller commands over 1MB in length. This keeps rogue
935 processes from running us out of memory.
937 o Minor features (misc):
938 - Give more descriptive well-formedness errors for out-of-range
939 hidden service descriptor/protocol versions.
940 - Make memory debugging information describe more about history
941 of cell allocation, so we can help reduce our memory use.
943 o Deprecated features (controller):
944 - The status/version/num-versioning and status/version/num-concurring
945 GETINFO options are no longer useful in the v3 directory protocol:
946 treat them as deprecated, and warn when they're used.
949 - When our consensus networkstatus has been expired for a while, stop
950 being willing to build circuits using it. Fixes bug 401. Bugfix
952 - Directory caches now fetch certificates from all authorities
953 listed in a networkstatus consensus, even when they do not
954 recognize them. Fixes bug 571. Bugfix on 0.2.0.x.
955 - When connecting to a bridge without specifying its key, insert
956 the connection into the identity-to-connection map as soon as
957 a key is learned. Fixes bug 574. Bugfix on 0.2.0.x.
958 - Detect versions of OS X where malloc_good_size() is present in the
959 library but never actually declared. Resolves bug 587. Bugfix
961 - Stop incorrectly truncating zlib responses to directory authority
962 signature download requests. Fixes bug 593. Bugfix on 0.2.0.x.
963 - Stop recommending that every server operator send mail to tor-ops.
964 Resolves bug 597. Bugfix on 0.1.2.x.
965 - Don't trigger an assert if we start a directory authority with a
966 private IP address (like 127.0.0.1).
967 - Avoid possible failures when generating a directory with routers
968 with over-long versions strings, or too many flags set. Bugfix
970 - If an attempt to launch a DNS resolve request over the control
971 port fails because we have overrun the limit on the number of
972 connections, tell the controller that the request has failed.
973 - Avoid using too little bandwidth when our clock skips a few
974 seconds. Bugfix on 0.1.2.x.
975 - Fix shell error when warning about missing packages in configure
976 script, on Fedora or Red Hat machines. Bugfix on 0.2.0.x.
977 - Do not become confused when receiving a spurious VERSIONS-like
978 cell from a confused v1 client. Bugfix on 0.2.0.x.
979 - Re-fetch v2 (as well as v0) rendezvous descriptors when all
980 introduction points for a hidden service have failed. Patch from
981 Karsten Loesing. Bugfix on 0.2.0.x.
983 o Code simplifications and refactoring:
984 - Remove some needless generality from cpuworker code, for improved
986 - Stop overloading the circuit_t.onionskin field for both "onionskin
987 from a CREATE cell that we are waiting for a cpuworker to be
988 assigned" and "onionskin from an EXTEND cell that we are going to
989 send to an OR as soon as we are connected". Might help with bug 600.
990 - Add an in-place version of aes_crypt() so that we can avoid doing a
991 needless memcpy() call on each cell payload.
994 Changes in version 0.2.0.18-alpha - 2008-01-25
995 Tor 0.2.0.18-alpha adds a sixth v3 directory authority run by CCC,
996 fixes a big memory leak in 0.2.0.17-alpha, and adds new config options
997 that can warn or reject connections to ports generally associated with
998 vulnerable-plaintext protocols.
1000 o New directory authorities:
1001 - Set up dannenberg (run by CCC) as the sixth v3 directory
1005 - Fix a major memory leak when attempting to use the v2 TLS
1006 handshake code. Bugfix on 0.2.0.x; fixes bug 589.
1007 - We accidentally enabled the under-development v2 TLS handshake
1008 code, which was causing log entries like "TLS error while
1009 renegotiating handshake". Disable it again. Resolves bug 590.
1010 - We were computing the wrong Content-Length: header for directory
1011 responses that need to be compressed on the fly, causing clients
1012 asking for those items to always fail. Bugfix on 0.2.0.x; partially
1016 - Avoid going directly to the directory authorities even if you're a
1017 relay, if you haven't found yourself reachable yet or if you've
1018 decided not to advertise your dirport yet. Addresses bug 556.
1019 - If we've gone 12 hours since our last bandwidth check, and we
1020 estimate we have less than 50KB bandwidth capacity but we could
1021 handle more, do another bandwidth test.
1022 - New config options WarnPlaintextPorts and RejectPlaintextPorts so
1023 Tor can warn and/or refuse connections to ports commonly used with
1024 vulnerable-plaintext protocols. Currently we warn on ports 23,
1025 109, 110, and 143, but we don't reject any.
1028 - When we setconf ClientOnly to 1, close any current OR and Dir
1029 listeners. Reported by mwenge.
1030 - When we get a consensus that's been signed by more people than
1031 we expect, don't log about it; it's not a big deal. Reported
1035 - Don't answer "/tor/networkstatus-bridges" directory requests if
1036 the request isn't encrypted.
1037 - Make "ClientOnly 1" config option disable directory ports too.
1038 - Patches from Karsten Loesing to make v2 hidden services more
1039 robust: work even when there aren't enough HSDir relays available;
1040 retry when a v2 rend desc fetch fails; but don't retry if we
1041 already have a usable v0 rend desc.
1044 Changes in version 0.2.0.17-alpha - 2008-01-17
1045 Tor 0.2.0.17-alpha makes the tarball build cleanly again (whoops).
1048 - Make the tor-gencert man page get included correctly in the tarball.
1051 Changes in version 0.2.0.16-alpha - 2008-01-17
1052 Tor 0.2.0.16-alpha adds a fifth v3 directory authority run by Karsten
1053 Loesing, and generally cleans up a lot of features and minor bugs.
1055 o New directory authorities:
1056 - Set up gabelmoo (run by Karsten Loesing) as the fifth v3 directory
1059 o Major performance improvements:
1060 - Switch our old ring buffer implementation for one more like that
1061 used by free Unix kernels. The wasted space in a buffer with 1mb
1062 of data will now be more like 8k than 1mb. The new implementation
1063 also avoids realloc();realloc(); patterns that can contribute to
1064 memory fragmentation.
1067 - Configuration files now accept C-style strings as values. This
1068 helps encode characters not allowed in the current configuration
1069 file format, such as newline or #. Addresses bug 557.
1070 - Although we fixed bug 539 (where servers would send HTTP status 503
1071 responses _and_ send a body too), there are still servers out
1072 there that haven't upgraded. Therefore, make clients parse such
1073 bodies when they receive them.
1074 - When we're not serving v2 directory information, there is no reason
1075 to actually keep any around. Remove the obsolete files and directory
1076 on startup if they are very old and we aren't going to serve them.
1078 o Minor performance improvements:
1079 - Reference-count and share copies of address policy entries; only 5%
1080 of them were actually distinct.
1081 - Never walk through the list of logs if we know that no log is
1082 interested in a given message.
1085 - When an authority has not signed a consensus, do not try to
1086 download a nonexistent "certificate with key 00000000". Bugfix
1087 on 0.2.0.x. Fixes bug 569.
1088 - Fix a rare assert error when we're closing one of our threads:
1089 use a mutex to protect the list of logs, so we never write to the
1090 list as it's being freed. Bugfix on 0.1.2.x. Fixes the very rare
1091 bug 575, which is kind of the revenge of bug 222.
1092 - Patch from Karsten Loesing to complain less at both the client
1093 and the relay when a relay used to have the HSDir flag but doesn't
1094 anymore, and we try to upload a hidden service descriptor.
1095 - Stop leaking one cert per TLS context. Fixes bug 582. Bugfix on
1097 - Do not try to download missing certificates until we have tried
1098 to check our fallback consensus. Fixes bug 583.
1099 - Make bridges round reported GeoIP stats info up to the nearest
1100 estimate, not down. Now we can distinguish between "0 people from
1101 this country" and "1 person from this country".
1102 - Avoid a spurious free on base64 failure. Bugfix on 0.1.2.
1103 - Avoid possible segfault if key generation fails in
1104 crypto_pk_hybrid_encrypt. Bugfix on 0.2.0.
1105 - Avoid segfault in the case where a badly behaved v2 versioning
1106 directory sends a signed networkstatus with missing client-versions.
1108 - Avoid segfaults on certain complex invocations of
1109 router_get_by_hexdigest(). Bugfix on 0.1.2.
1110 - Correct bad index on array access in parse_http_time(). Bugfix
1112 - Fix possible bug in vote generation when server versions are present
1113 but client versions are not.
1114 - Fix rare bug on REDIRECTSTREAM control command when called with no
1115 port set: it could erroneously report an error when none had
1117 - Avoid bogus crash-prone, leak-prone tor_realloc when we're
1118 compressing large objects and find ourselves with more than 4k
1119 left over. Bugfix on 0.2.0.
1120 - Fix a small memory leak when setting up a hidden service.
1121 - Fix a few memory leaks that could in theory happen under bizarre
1123 - Fix an assert if we post a general-purpose descriptor via the
1124 control port but that descriptor isn't mentioned in our current
1125 network consensus. Bug reported by Jon McLachlan; bugfix on
1128 o Minor features (controller):
1129 - Get NS events working again. Patch from tup.
1130 - The GETCONF command now escapes and quotes configuration values
1131 that don't otherwise fit into the torrc file.
1132 - The SETCONF command now handles quoted values correctly.
1134 o Minor features (directory authorities):
1135 - New configuration options to override default maximum number of
1136 servers allowed on a single IP address. This is important for
1137 running a test network on a single host.
1138 - Actually implement the -s option to tor-gencert.
1139 - Add a manual page for tor-gencert.
1141 o Minor features (bridges):
1142 - Bridge authorities no longer serve bridge descriptors over
1143 unencrypted connections.
1145 o Minor features (other):
1146 - Add hidden services and DNSPorts to the list of things that make
1147 Tor accept that it has running ports. Change starting Tor with no
1148 ports from a fatal error to a warning; we might change it back if
1149 this turns out to confuse anybody. Fixes bug 579.
1152 Changes in version 0.1.2.19 - 2008-01-17
1153 Tor 0.1.2.19 fixes a huge memory leak on exit relays, makes the default
1154 exit policy a little bit more conservative so it's safer to run an
1155 exit relay on a home system, and fixes a variety of smaller issues.
1158 - Exit policies now reject connections that are addressed to a
1159 relay's public (external) IP address too, unless
1160 ExitPolicyRejectPrivate is turned off. We do this because too
1161 many relays are running nearby to services that trust them based
1165 - When the clock jumps forward a lot, do not allow the bandwidth
1166 buckets to become negative. Fixes bug 544.
1167 - Fix a memory leak on exit relays; we were leaking a cached_resolve_t
1168 on every successful resolve. Reported by Mike Perry.
1169 - Purge old entries from the "rephist" database and the hidden
1170 service descriptor database even when DirPort is zero.
1171 - Stop thinking that 0.1.2.x directory servers can handle "begin_dir"
1172 requests. Should ease bugs 406 and 419 where 0.1.2.x relays are
1173 crashing or mis-answering these requests.
1174 - When we decide to send a 503 response to a request for servers, do
1175 not then also send the server descriptors: this defeats the whole
1176 purpose. Fixes bug 539.
1179 - Changing the ExitPolicyRejectPrivate setting should cause us to
1180 rebuild our server descriptor.
1181 - Fix handling of hex nicknames when answering controller requests for
1182 networkstatus by name, or when deciding whether to warn about
1183 unknown routers in a config option. (Patch from mwenge.)
1184 - Fix a couple of hard-to-trigger autoconf problems that could result
1185 in really weird results on platforms whose sys/types.h files define
1186 nonstandard integer types.
1187 - Don't try to create the datadir when running --verify-config or
1188 --hash-password. Resolves bug 540.
1189 - If we were having problems getting a particular descriptor from the
1190 directory caches, and then we learned about a new descriptor for
1191 that router, we weren't resetting our failure count. Reported
1193 - Although we fixed bug 539 (where servers would send HTTP status 503
1194 responses _and_ send a body too), there are still servers out there
1195 that haven't upgraded. Therefore, make clients parse such bodies
1196 when they receive them.
1197 - Run correctly on systems where rlim_t is larger than unsigned long.
1198 This includes some 64-bit systems.
1199 - Run correctly on platforms (like some versions of OS X 10.5) where
1200 the real limit for number of open files is OPEN_FILES, not rlim_max
1201 from getrlimit(RLIMIT_NOFILES).
1202 - Avoid a spurious free on base64 failure.
1203 - Avoid segfaults on certain complex invocations of
1204 router_get_by_hexdigest().
1205 - Fix rare bug on REDIRECTSTREAM control command when called with no
1206 port set: it could erroneously report an error when none had
1210 Changes in version 0.2.0.15-alpha - 2007-12-25
1211 Tor 0.2.0.14-alpha and 0.2.0.15-alpha fix a bunch of bugs with the
1212 features added in 0.2.0.13-alpha.
1215 - Fix several remotely triggerable asserts based on DirPort requests
1216 for a v2 or v3 networkstatus object before we were prepared. This
1217 was particularly bad for 0.2.0.13 and later bridge relays, who
1218 would never have a v2 networkstatus and would thus always crash
1219 when used. Bugfixes on 0.2.0.x.
1220 - Estimate the v3 networkstatus size more accurately, rather than
1221 estimating it at zero bytes and giving it artificially high priority
1222 compared to other directory requests. Bugfix on 0.2.0.x.
1225 - Fix configure.in logic for cross-compilation.
1226 - When we load a bridge descriptor from the cache, and it was
1227 previously unreachable, mark it as retriable so we won't just
1228 ignore it. Also, try fetching a new copy immediately. Bugfixes
1230 - The bridge GeoIP stats were counting other relays, for example
1231 self-reachability and authority-reachability tests.
1234 - Support compilation to target iPhone; patch from cjacker huang.
1235 To build for iPhone, pass the --enable-iphone option to configure.
1238 Changes in version 0.2.0.14-alpha - 2007-12-23
1240 - Fix a crash on startup if you install Tor 0.2.0.13-alpha fresh
1241 without a datadirectory from a previous Tor install. Reported
1243 - Fix a crash when we fetch a descriptor that turns out to be
1244 unexpected (it used to be in our networkstatus when we started
1245 fetching it, but it isn't in our current networkstatus), and we
1246 aren't using bridges. Bugfix on 0.2.0.x.
1247 - Fix a crash when accessing hidden services: it would work the first
1248 time you use a given introduction point for your service, but
1249 on subsequent requests we'd be using garbage memory. Fixed by
1250 Karsten Loesing. Bugfix on 0.2.0.13-alpha.
1251 - Fix a crash when we load a bridge descriptor from disk but we don't
1252 currently have a Bridge line for it in our torrc. Bugfix on
1256 - If bridge authorities set BridgePassword, they will serve a
1257 snapshot of known bridge routerstatuses from their DirPort to
1258 anybody who knows that password. Unset by default.
1261 - Make the unit tests build again.
1262 - Make "GETINFO/desc-annotations/id/<OR digest>" actually work.
1263 - Make PublishServerDescriptor default to 1, so the default doesn't
1264 have to change as we invent new directory protocol versions.
1265 - Fix test for rlim_t on OSX 10.3: sys/resource.h doesn't want to
1266 be included unless sys/time.h is already included. Fixes
1267 bug 553. Bugfix on 0.2.0.x.
1268 - If we receive a general-purpose descriptor and then receive an
1269 identical bridge-purpose descriptor soon after, don't discard
1270 the next one as a duplicate.
1273 - If BridgeRelay is set to 1, then the default for
1274 PublishServerDescriptor is now "bridge" rather than "v2,v3".
1275 - If the user sets RelayBandwidthRate but doesn't set
1276 RelayBandwidthBurst, then make them equal rather than erroring out.
1279 Changes in version 0.2.0.13-alpha - 2007-12-21
1280 Tor 0.2.0.13-alpha adds a fourth v3 directory authority run by Geoff
1281 Goodell, fixes many more bugs, and adds a lot of infrastructure for
1284 o New directory authorities:
1285 - Set up lefkada (run by Geoff Goodell) as the fourth v3 directory
1289 - Only update guard status (usable / not usable) once we have
1290 enough directory information. This was causing us to always pick
1291 two new guards on startup (bugfix on 0.2.0.9-alpha), and it was
1292 causing us to discard all our guards on startup if we hadn't been
1293 running for a few weeks (bugfix on 0.1.2.x). Fixes bug 448.
1294 - Purge old entries from the "rephist" database and the hidden
1295 service descriptor databases even when DirPort is zero. Bugfix
1297 - We were ignoring our RelayBandwidthRate for the first 30 seconds
1298 after opening a circuit -- even a relayed circuit. Bugfix on
1300 - Stop thinking that 0.1.2.x directory servers can handle "begin_dir"
1301 requests. Should ease bugs 406 and 419 where 0.1.2.x relays are
1302 crashing or mis-answering these types of requests.
1303 - Relays were publishing their server descriptor to v1 and v2
1304 directory authorities, but they didn't try publishing to v3-only
1305 authorities. Fix this; and also stop publishing to v1 authorities.
1307 - When we were reading router descriptors from cache, we were ignoring
1308 the annotations -- so for example we were reading in bridge-purpose
1309 descriptors as general-purpose descriptors. Bugfix on 0.2.0.8-alpha.
1310 - When we decided to send a 503 response to a request for servers, we
1311 were then also sending the server descriptors: this defeats the
1312 whole purpose. Fixes bug 539; bugfix on 0.1.2.x.
1315 - Bridge relays now behave like clients with respect to time
1316 intervals for downloading new consensus documents -- otherwise they
1317 stand out. Bridge users now wait until the end of the interval,
1318 so their bridge relay will be sure to have a new consensus document.
1319 - Three new config options (AlternateDirAuthority,
1320 AlternateBridgeAuthority, and AlternateHSAuthority) that let the
1321 user selectively replace the default directory authorities by type,
1322 rather than the all-or-nothing replacement that DirServer offers.
1323 - Tor can now be configured to read a GeoIP file from disk in one
1324 of two formats. This can be used by controllers to map IP addresses
1325 to countries. Eventually, it may support exit-by-country.
1326 - When possible, bridge relays remember which countries users
1327 are coming from, and report aggregate information in their
1328 extra-info documents, so that the bridge authorities can learn
1329 where Tor is blocked.
1330 - Bridge directory authorities now do reachability testing on the
1331 bridges they know. They provide router status summaries to the
1332 controller via "getinfo ns/purpose/bridge", and also dump summaries
1333 to a file periodically.
1334 - Stop fetching directory info so aggressively if your DirPort is
1335 on but your ORPort is off; stop fetching v2 dir info entirely.
1336 You can override these choices with the new FetchDirInfoEarly
1340 - The fix in 0.2.0.12-alpha cleared the "hsdir" flag in v3 network
1341 consensus documents when there are too many relays at a single
1342 IP address. Now clear it in v2 network status documents too, and
1343 also clear it in routerinfo_t when the relay is no longer listed
1344 in the relevant networkstatus document.
1345 - Don't crash if we get an unexpected value for the
1346 PublishServerDescriptor config option. Reported by Matt Edman;
1347 bugfix on 0.2.0.9-alpha.
1348 - Our new v2 hidden service descriptor format allows descriptors
1349 that have no introduction points. But Tor crashed when we tried
1350 to build a descriptor with no intro points (and it would have
1351 crashed if we had tried to parse one). Bugfix on 0.2.0.x; patch
1353 - Fix building with dmalloc 5.5.2 with glibc.
1354 - Reject uploaded descriptors and extrainfo documents if they're
1355 huge. Otherwise we'll cache them all over the network and it'll
1356 clog everything up. Reported by Aljosha Judmayer.
1357 - Check for presence of s6_addr16 and s6_addr32 fields in in6_addr
1358 via autoconf. Should fix compile on solaris. Bugfix on 0.2.0.x.
1359 - When the DANGEROUS_VERSION controller status event told us we're
1360 running an obsolete version, it used the string "OLD" to describe
1361 it. Yet the "getinfo" interface used the string "OBSOLETE". Now use
1362 "OBSOLETE" in both cases. Bugfix on 0.1.2.x.
1363 - If we can't expand our list of entry guards (e.g. because we're
1364 using bridges or we have StrictEntryNodes set), don't mark relays
1365 down when they fail a directory request. Otherwise we're too quick
1366 to mark all our entry points down. Bugfix on 0.1.2.x.
1367 - Fix handling of hex nicknames when answering controller requests for
1368 networkstatus by name, or when deciding whether to warn about unknown
1369 routers in a config option. Bugfix on 0.1.2.x. (Patch from mwenge.)
1370 - Fix a couple of hard-to-trigger autoconf problems that could result
1371 in really weird results on platforms whose sys/types.h files define
1372 nonstandard integer types. Bugfix on 0.1.2.x.
1373 - Fix compilation with --disable-threads set. Bugfix on 0.2.0.x.
1374 - Don't crash on name lookup when we have no current consensus. Fixes
1375 bug 538; bugfix on 0.2.0.x.
1376 - Only Tors that want to mirror the v2 directory info should
1377 create the "cached-status" directory in their datadir. (All Tors
1378 used to create it.) Bugfix on 0.2.0.9-alpha.
1379 - Directory authorities should only automatically download Extra Info
1380 documents if they're v1, v2, or v3 authorities. Bugfix on 0.1.2.x.
1383 - On the USR1 signal, when dmalloc is in use, log the top 10 memory
1384 consumers. (We already do this on HUP.)
1385 - Authorities and caches fetch the v2 networkstatus documents
1386 less often, now that v3 is encouraged.
1387 - Add a new config option BridgeRelay that specifies you want to
1388 be a bridge relay. Right now the only difference is that it makes
1389 you answer begin_dir requests, and it makes you cache dir info,
1390 even if your DirPort isn't on.
1391 - Add "GETINFO/desc-annotations/id/<OR digest>" so controllers can
1392 ask about source, timestamp of arrival, purpose, etc. We need
1393 something like this to help Vidalia not do GeoIP lookups on bridge
1395 - Allow multiple HashedControlPassword config lines, to support
1396 multiple controller passwords.
1397 - Authorities now decide whether they're authoritative for a given
1398 router based on the router's purpose.
1399 - New config options AuthDirBadDir and AuthDirListBadDirs for
1400 authorities to mark certain relays as "bad directories" in the
1401 networkstatus documents. Also supports the "!baddir" directive in
1402 the approved-routers file.
1405 Changes in version 0.2.0.12-alpha - 2007-11-16
1406 This twelfth development snapshot fixes some more build problems as
1407 well as a few minor bugs.
1410 - Make it build on OpenBSD again. Patch from tup.
1411 - Substitute BINDIR and LOCALSTATEDIR in scripts. Fixes
1412 package-building for Red Hat, OS X, etc.
1414 o Minor bugfixes (on 0.1.2.x):
1415 - Changing the ExitPolicyRejectPrivate setting should cause us to
1416 rebuild our server descriptor.
1418 o Minor bugfixes (on 0.2.0.x):
1419 - When we're lacking a consensus, don't try to perform rendezvous
1420 operations. Reported by Karsten Loesing.
1421 - Fix a small memory leak whenever we decide against using a
1422 newly picked entry guard. Reported by Mike Perry.
1423 - When authorities detected more than two relays running on the same
1424 IP address, they were clearing all the status flags but forgetting
1425 to clear the "hsdir" flag. So clients were being told that a
1426 given relay was the right choice for a v2 hsdir lookup, yet they
1427 never had its descriptor because it was marked as 'not running'
1429 - If we're trying to fetch a bridge descriptor and there's no way
1430 the bridge authority could help us (for example, we don't know
1431 a digest, or there is no bridge authority), don't be so eager to
1432 fall back to asking the bridge authority.
1433 - If we're using bridges or have strictentrynodes set, and our
1434 chosen exit is in the same family as all our bridges/entry guards,
1435 then be flexible about families.
1438 - When we negotiate a v2 link-layer connection (not yet implemented),
1439 accept RELAY_EARLY cells and turn them into RELAY cells if we've
1440 negotiated a v1 connection for their next step. Initial code for
1444 Changes in version 0.2.0.11-alpha - 2007-11-12
1445 This eleventh development snapshot fixes some build problems with
1446 the previous snapshot. It also includes a more secure-by-default exit
1447 policy for relays, fixes an enormous memory leak for exit relays, and
1448 fixes another bug where servers were falling out of the directory list.
1451 - Exit policies now reject connections that are addressed to a
1452 relay's public (external) IP address too, unless
1453 ExitPolicyRejectPrivate is turned off. We do this because too
1454 many relays are running nearby to services that trust them based
1455 on network address. Bugfix on 0.1.2.x.
1458 - Fix a memory leak on exit relays; we were leaking a cached_resolve_t
1459 on every successful resolve. Reported by Mike Perry; bugfix
1461 - On authorities, never downgrade to old router descriptors simply
1462 because they're listed in the consensus. This created a catch-22
1463 where we wouldn't list a new descriptor because there was an
1464 old one in the consensus, and we couldn't get the new one in the
1465 consensus because we wouldn't list it. Possible fix for bug 548.
1466 Also, this might cause bug 543 to appear on authorities; if so,
1467 we'll need a band-aid for that. Bugfix on 0.2.0.9-alpha.
1469 o Packaging fixes on 0.2.0.10-alpha:
1470 - We were including instructions about what to do with the
1471 src/config/fallback-consensus file, but we weren't actually
1472 including it in the tarball. Disable all of that for now.
1475 - Allow people to say PreferTunnelledDirConns rather than
1476 PreferTunneledDirConns, for those alternate-spellers out there.
1479 - Don't reevaluate all the information from our consensus document
1480 just because we've downloaded a v2 networkstatus that we intend
1481 to cache. Fixes bug 545; bugfix on 0.2.0.x.
1484 Changes in version 0.2.0.10-alpha - 2007-11-10
1485 This tenth development snapshot adds a third v3 directory authority
1486 run by Mike Perry, adds most of Karsten Loesing's new hidden service
1487 descriptor format, fixes a bad crash bug and new bridge bugs introduced
1488 in 0.2.0.9-alpha, fixes many bugs with the v3 directory implementation,
1489 fixes some minor memory leaks in previous 0.2.0.x snapshots, and
1490 addresses many more minor issues.
1492 o New directory authorities:
1493 - Set up ides (run by Mike Perry) as the third v3 directory authority.
1496 - Allow tunnelled directory connections to ask for an encrypted
1497 "begin_dir" connection or an anonymized "uses a full Tor circuit"
1498 connection independently. Now we can make anonymized begin_dir
1499 connections for (e.g.) more secure hidden service posting and
1501 - More progress on proposal 114: code from Karsten Loesing to
1502 implement new hidden service descriptor format.
1503 - Raise the default BandwidthRate/BandwidthBurst to 5MB/10MB, to
1504 accommodate the growing number of servers that use the default
1505 and are reaching it.
1506 - Directory authorities use a new formula for selecting which nodes
1507 to advertise as Guards: they must be in the top 7/8 in terms of
1508 how long we have known about them, and above the median of those
1509 nodes in terms of weighted fractional uptime.
1510 - Make "not enough dir info yet" warnings describe *why* Tor feels
1511 it doesn't have enough directory info yet.
1514 - Stop servers from crashing if they set a Family option (or
1515 maybe in other situations too). Bugfix on 0.2.0.9-alpha; reported
1517 - Make bridge users work again -- the move to v3 directories in
1518 0.2.0.9-alpha had introduced a number of bugs that made bridges
1519 no longer work for clients.
1520 - When the clock jumps forward a lot, do not allow the bandwidth
1521 buckets to become negative. Bugfix on 0.1.2.x; fixes bug 544.
1523 o Major bugfixes (v3 dir, bugfixes on 0.2.0.9-alpha):
1524 - When the consensus lists a router descriptor that we previously were
1525 mirroring, but that we considered non-canonical, reload the
1526 descriptor as canonical. This fixes bug 543 where Tor servers
1527 would start complaining after a few days that they don't have
1528 enough directory information to build a circuit.
1529 - Consider replacing the current consensus when certificates arrive
1530 that make the pending consensus valid. Previously, we were only
1531 considering replacement when the new certs _didn't_ help.
1532 - Fix an assert error on startup if we didn't already have the
1533 consensus and certs cached in our datadirectory: we were caching
1534 the consensus in consensus_waiting_for_certs but then free'ing it
1536 - Avoid sending a request for "keys/fp" (for which we'll get a 400 Bad
1537 Request) if we need more v3 certs but we've already got pending
1538 requests for all of them.
1539 - Correctly back off from failing certificate downloads. Fixes
1541 - Authorities don't vote on the Running flag if they have been running
1542 for less than 30 minutes themselves. Fixes bug 547, where a newly
1543 started authority would vote that everyone was down.
1546 - Drop support for OpenSSL version 0.9.6. Just about nobody was using
1547 it, it had no AES, and it hasn't seen any security patches since
1551 - Clients now hold circuitless TLS connections open for 1.5 times
1552 MaxCircuitDirtiness (15 minutes), since it is likely that they'll
1553 rebuild a new circuit over them within that timeframe. Previously,
1554 they held them open only for KeepalivePeriod (5 minutes).
1555 - Use "If-Modified-Since" to avoid retrieving consensus
1556 networkstatuses that we already have.
1557 - When we have no consensus, check FallbackNetworkstatusFile (defaults
1558 to $PREFIX/share/tor/fallback-consensus) for a consensus. This way
1559 we start knowing some directory caches.
1560 - When we receive a consensus from the future, warn about skew.
1561 - Improve skew reporting: try to give the user a better log message
1562 about how skewed they are, and how much this matters.
1563 - When we have a certificate for an authority, believe that
1564 certificate's claims about the authority's IP address.
1565 - New --quiet command-line option to suppress the default console log.
1566 Good in combination with --hash-password.
1567 - Authorities send back an X-Descriptor-Not-New header in response to
1568 an accepted-but-discarded descriptor upload. Partially implements
1570 - Make the log message for "tls error. breaking." more useful.
1571 - Better log messages about certificate downloads, to attempt to
1572 track down the second incarnation of bug 546.
1574 o Minor features (bridges):
1575 - If bridge users set UpdateBridgesFromAuthority, but the digest
1576 they ask for is a 404 from the bridge authority, they now fall
1577 back to trying the bridge directly.
1578 - Bridges now use begin_dir to publish their server descriptor to
1579 the bridge authority, even when they haven't set TunnelDirConns.
1581 o Minor features (controller):
1582 - When reporting clock skew, and we know that the clock is _at least
1583 as skewed_ as some value, but we don't know the actual value,
1584 report the value as a "minimum skew."
1587 - Update linux-tor-prio.sh script to allow QoS based on the uid of
1588 the Tor process. Patch from Marco Bonetti with tweaks from Mike
1592 - Refuse to start if both ORPort and UseBridges are set. Bugfix
1593 on 0.2.0.x, suggested by Matt Edman.
1594 - Don't stop fetching descriptors when FetchUselessDescriptors is
1595 set, even if we stop asking for circuits. Bugfix on 0.1.2.x;
1596 reported by tup and ioerror.
1597 - Better log message on vote from unknown authority.
1598 - Don't log "Launching 0 request for 0 router" message.
1600 o Minor bugfixes (memory leaks):
1601 - Stop leaking memory every time we parse a v3 certificate. Bugfix
1603 - Stop leaking memory every time we load a v3 certificate. Bugfix
1604 on 0.2.0.1-alpha. Fixes bug 536.
1605 - Stop leaking a cached networkstatus on exit. Bugfix on
1607 - Stop leaking voter information every time we free a consensus.
1608 Bugfix on 0.2.0.3-alpha.
1609 - Stop leaking signed data every time we check a voter signature.
1610 Bugfix on 0.2.0.3-alpha.
1611 - Stop leaking a signature every time we fail to parse a consensus or
1612 a vote. Bugfix on 0.2.0.3-alpha.
1613 - Stop leaking v2_download_status_map on shutdown. Bugfix on
1615 - Stop leaking conn->nickname every time we make a connection to a
1616 Tor relay without knowing its expected identity digest (e.g. when
1617 using bridges). Bugfix on 0.2.0.3-alpha.
1619 - Minor bugfixes (portability):
1620 - Run correctly on platforms where rlim_t is larger than unsigned
1621 long, and/or where the real limit for number of open files is
1622 OPEN_FILES, not rlim_max from getrlimit(RLIMIT_NOFILES). In
1623 particular, these may be needed for OS X 10.5.
1626 Changes in version 0.1.2.18 - 2007-10-28
1627 Tor 0.1.2.18 fixes many problems including crash bugs, problems with
1628 hidden service introduction that were causing huge delays, and a big
1629 bug that was causing some servers to disappear from the network status
1630 lists for a few hours each day.
1632 o Major bugfixes (crashes):
1633 - If a connection is shut down abruptly because of something that
1634 happened inside connection_flushed_some(), do not call
1635 connection_finished_flushing(). Should fix bug 451:
1636 "connection_stop_writing: Assertion conn->write_event failed"
1637 Bugfix on 0.1.2.7-alpha.
1638 - Fix possible segfaults in functions called from
1639 rend_process_relay_cell().
1641 o Major bugfixes (hidden services):
1642 - Hidden services were choosing introduction points uniquely by
1643 hexdigest, but when constructing the hidden service descriptor
1644 they merely wrote the (potentially ambiguous) nickname.
1645 - Clients now use the v2 intro format for hidden service
1646 connections: they specify their chosen rendezvous point by identity
1647 digest rather than by (potentially ambiguous) nickname. These
1648 changes could speed up hidden service connections dramatically.
1650 o Major bugfixes (other):
1651 - Stop publishing a new server descriptor just because we get a
1652 HUP signal. This led (in a roundabout way) to some servers getting
1653 dropped from the networkstatus lists for a few hours each day.
1654 - When looking for a circuit to cannibalize, consider family as well
1655 as identity. Fixes bug 438. Bugfix on 0.1.0.x (which introduced
1656 circuit cannibalization).
1657 - When a router wasn't listed in a new networkstatus, we were leaving
1658 the flags for that router alone -- meaning it remained Named,
1659 Running, etc -- even though absence from the networkstatus means
1660 that it shouldn't be considered to exist at all anymore. Now we
1661 clear all the flags for routers that fall out of the networkstatus
1662 consensus. Fixes bug 529.
1665 - Don't try to access (or alter) the state file when running
1666 --list-fingerprint or --verify-config or --hash-password. Resolves
1668 - When generating information telling us how to extend to a given
1669 router, do not try to include the nickname if it is
1670 absent. Resolves bug 467.
1671 - Fix a user-triggerable segfault in expand_filename(). (There isn't
1672 a way to trigger this remotely.)
1673 - When sending a status event to the controller telling it that an
1674 OR address is reachable, set the port correctly. (Previously we
1675 were reporting the dir port.)
1676 - Fix a minor memory leak whenever a controller sends the PROTOCOLINFO
1677 command. Bugfix on 0.1.2.17.
1678 - When loading bandwidth history, do not believe any information in
1679 the future. Fixes bug 434.
1680 - When loading entry guard information, do not believe any information
1682 - When we have our clock set far in the future and generate an
1683 onion key, then re-set our clock to be correct, we should not stop
1684 the onion key from getting rotated.
1685 - On some platforms, accept() can return a broken address. Detect
1686 this more quietly, and deal accordingly. Fixes bug 483.
1687 - It's not actually an error to find a non-pending entry in the DNS
1688 cache when canceling a pending resolve. Don't log unless stuff
1689 is fishy. Resolves bug 463.
1690 - Don't reset trusted dir server list when we set a configuration
1691 option. Patch from Robert Hogan.
1692 - Don't try to create the datadir when running --verify-config or
1693 --hash-password. Resolves bug 540.
1696 Changes in version 0.2.0.9-alpha - 2007-10-24
1697 This ninth development snapshot switches clients to the new v3 directory
1698 system; allows servers to be listed in the network status even when they
1699 have the same nickname as a registered server; and fixes many other
1700 bugs including a big one that was causing some servers to disappear
1701 from the network status lists for a few hours each day.
1703 o Major features (directory system):
1704 - Clients now download v3 consensus networkstatus documents instead
1705 of v2 networkstatus documents. Clients and caches now base their
1706 opinions about routers on these consensus documents. Clients only
1707 download router descriptors listed in the consensus.
1708 - Authorities now list servers who have the same nickname as
1709 a different named server, but list them with a new flag,
1710 "Unnamed". Now we can list servers that happen to pick the same
1711 nickname as a server that registered two years ago and then
1712 disappeared. Partially implements proposal 122.
1713 - If the consensus lists a router as "Unnamed", the name is assigned
1714 to a different router: do not identify the router by that name.
1715 Partially implements proposal 122.
1716 - Authorities can now come to a consensus on which method to use to
1717 compute the consensus. This gives us forward compatibility.
1720 - Stop publishing a new server descriptor just because we HUP or
1721 when we find our DirPort to be reachable but won't actually publish
1722 it. New descriptors without any real changes are dropped by the
1723 authorities, and can screw up our "publish every 18 hours" schedule.
1725 - When a router wasn't listed in a new networkstatus, we were leaving
1726 the flags for that router alone -- meaning it remained Named,
1727 Running, etc -- even though absence from the networkstatus means
1728 that it shouldn't be considered to exist at all anymore. Now we
1729 clear all the flags for routers that fall out of the networkstatus
1730 consensus. Fixes bug 529; bugfix on 0.1.2.x.
1731 - Fix awful behavior in DownloadExtraInfo option where we'd fetch
1732 extrainfo documents and then discard them immediately for not
1733 matching the latest router. Bugfix on 0.2.0.1-alpha.
1735 o Minor features (v3 directory protocol):
1736 - Allow tor-gencert to generate a new certificate without replacing
1738 - Allow certificates to include an address.
1739 - When we change our directory-cache settings, reschedule all voting
1740 and download operations.
1741 - Reattempt certificate downloads immediately on failure, as long as
1742 we haven't failed a threshold number of times yet.
1743 - Delay retrying consensus downloads while we're downloading
1744 certificates to verify the one we just got. Also, count getting a
1745 consensus that we already have (or one that isn't valid) as a failure,
1746 and count failing to get the certificates after 20 minutes as a
1748 - Build circuits and download descriptors even if our consensus is a
1749 little expired. (This feature will go away once authorities are
1752 o Minor features (router descriptor cache):
1753 - If we find a cached-routers file that's been sitting around for more
1754 than 28 days unmodified, then most likely it's a leftover from
1755 when we upgraded to 0.2.0.8-alpha. Remove it. It has no good
1757 - When we (as a cache) download a descriptor because it was listed
1758 in a consensus, remember when the consensus was supposed to expire,
1759 and don't expire the descriptor until then.
1761 o Minor features (performance):
1762 - Call routerlist_remove_old_routers() much less often. This should
1763 speed startup, especially on directory caches.
1764 - Don't try to launch new descriptor downloads quite so often when we
1765 already have enough directory information to build circuits.
1766 - Base64 decoding was actually showing up on our profile when parsing
1767 the initial descriptor file; switch to an in-process all-at-once
1768 implementation that's about 3.5x times faster than calling out to
1771 o Minor features (compilation):
1772 - Detect non-ASCII platforms (if any still exist) and refuse to
1773 build there: some of our code assumes that 'A' is 65 and so on.
1775 o Minor bugfixes (v3 directory authorities, bugfixes on 0.2.0.x):
1776 - Make the "next period" votes into "current period" votes immediately
1777 after publishing the consensus; avoid a heisenbug that made them
1778 stick around indefinitely.
1779 - When we discard a vote as a duplicate, do not report this as
1781 - Treat missing v3 keys or certificates as an error when running as a
1782 v3 directory authority.
1783 - When we're configured to be a v3 authority, but we're only listed
1784 as a non-v3 authority in our DirServer line for ourself, correct
1786 - If an authority doesn't have a qualified hostname, just put
1787 its address in the vote. This fixes the problem where we referred to
1788 "moria on moria:9031."
1789 - Distinguish between detached signatures for the wrong period, and
1790 detached signatures for a divergent vote.
1791 - Fix a small memory leak when computing a consensus.
1792 - When there's no concensus, we were forming a vote every 30
1793 minutes, but writing the "valid-after" line in our vote based
1794 on our configured V3AuthVotingInterval: so unless the intervals
1795 matched up, we immediately rejected our own vote because it didn't
1796 start at the voting interval that caused us to construct a vote.
1798 o Minor bugfixes (v3 directory protocol, bugfixes on 0.2.0.x):
1799 - Delete unverified-consensus when the real consensus is set.
1800 - Consider retrying a consensus networkstatus fetch immediately
1801 after one fails: don't wait 60 seconds to notice.
1802 - When fetching a consensus as a cache, wait until a newer consensus
1803 should exist before trying to replace the current one.
1804 - Use a more forgiving schedule for retrying failed consensus
1805 downloads than for other types.
1807 o Minor bugfixes (other directory issues):
1808 - Correct the implementation of "download votes by digest." Bugfix on
1810 - Authorities no longer send back "400 you're unreachable please fix
1811 it" errors to Tor servers that aren't online all the time. We're
1812 supposed to tolerate these servers now. Bugfix on 0.1.2.x.
1814 o Minor bugfixes (controller):
1815 - Don't reset trusted dir server list when we set a configuration
1816 option. Patch from Robert Hogan; bugfix on 0.1.2.x.
1817 - Respond to INT and TERM SIGNAL commands before we execute the
1818 signal, in case the signal shuts us down. We had a patch in
1819 0.1.2.1-alpha that tried to do this by queueing the response on
1820 the connection's buffer before shutting down, but that really
1821 isn't the same thing at all. Bug located by Matt Edman.
1823 o Minor bugfixes (misc):
1824 - Correctly check for bad options to the "PublishServerDescriptor"
1825 config option. Bugfix on 0.2.0.1-alpha; reported by Matt Edman.
1826 - Stop leaking memory on failing case of base32_decode, and make
1827 it accept upper-case letters. Bugfixes on 0.2.0.7-alpha.
1828 - Don't try to download extrainfo documents when we're trying to
1829 fetch enough directory info to build a circuit: having enough
1830 info should get priority. Bugfix on 0.2.0.x.
1831 - Don't complain that "your server has not managed to confirm that its
1832 ports are reachable" if we haven't been able to build any circuits
1833 yet. Bug found by spending four hours without a v3 consensus. Bugfix
1835 - Detect the reason for failing to mmap a descriptor file we just
1836 wrote, and give a more useful log message. Fixes bug 533. Bugfix
1839 o Code simplifications and refactoring:
1840 - Remove support for the old bw_accounting file: we've been storing
1841 bandwidth accounting information in the state file since
1842 0.1.2.5-alpha. This may result in bandwidth accounting errors
1843 if you try to upgrade from 0.1.1.x or earlier, or if you try to
1844 downgrade to 0.1.1.x or earlier.
1845 - New convenience code to locate a file within the DataDirectory.
1846 - Move non-authority functionality out of dirvote.c.
1847 - Refactor the arguments for router_pick_{directory_|trusteddir}server
1848 so that they all take the same named flags.
1851 - Include the "tor-ctrl.sh" bash script by Stefan Behte to provide
1852 Unix users an easy way to script their Tor process (e.g. by
1853 adjusting bandwidth based on the time of the day).
1856 Changes in version 0.2.0.8-alpha - 2007-10-12
1857 This eighth development snapshot fixes a crash bug that's been bothering
1858 us since February 2007, lets bridge authorities store a list of bridge
1859 descriptors they've seen, gets v3 directory voting closer to working,
1860 starts caching v3 directory consensus documents on directory mirrors,
1861 and fixes a variety of smaller issues including some minor memory leaks.
1863 o Major features (router descriptor cache):
1864 - Store routers in a file called cached-descriptors instead of in
1865 cached-routers. Initialize cached-descriptors from cached-routers
1866 if the old format is around. The new format allows us to store
1867 annotations along with descriptors.
1868 - Use annotations to record the time we received each descriptor, its
1869 source, and its purpose.
1870 - Disable the SETROUTERPURPOSE controller command: it is now
1872 - Controllers should now specify cache=no or cache=yes when using
1873 the +POSTDESCRIPTOR command.
1874 - Bridge authorities now write bridge descriptors to disk, meaning
1875 we can export them to other programs and begin distributing them
1878 o Major features (directory authorities):
1879 - When a v3 authority is missing votes or signatures, it now tries
1881 - Directory authorities track weighted fractional uptime as well as
1882 weighted mean-time-between failures. WFU is suitable for deciding
1883 whether a node is "usually up", while MTBF is suitable for deciding
1884 whether a node is "likely to stay up." We need both, because
1885 "usually up" is a good requirement for guards, while "likely to
1886 stay up" is a good requirement for long-lived connections.
1888 o Major features (v3 directory system):
1889 - Caches now download v3 network status documents as needed,
1890 and download the descriptors listed in them.
1891 - All hosts now attempt to download and keep fresh v3 authority
1892 certificates, and re-attempt after failures.
1893 - More internal-consistency checks for vote parsing.
1895 o Major bugfixes (crashes):
1896 - If a connection is shut down abruptly because of something that
1897 happened inside connection_flushed_some(), do not call
1898 connection_finished_flushing(). Should fix bug 451. Bugfix on
1901 o Major bugfixes (performance):
1902 - Fix really bad O(n^2) performance when parsing a long list of
1903 routers: Instead of searching the entire list for an "extra-info "
1904 string which usually wasn't there, once for every routerinfo
1905 we read, just scan lines forward until we find one we like.
1907 - When we add data to a write buffer in response to the data on that
1908 write buffer getting low because of a flush, do not consider the
1909 newly added data as a candidate for immediate flushing, but rather
1910 make it wait until the next round of writing. Otherwise, we flush
1911 and refill recursively, and a single greedy TLS connection can
1912 eat all of our bandwidth. Bugfix on 0.1.2.7-alpha.
1914 o Minor features (v3 authority system):
1915 - Add more ways for tools to download the votes that lead to the
1917 - Send a 503 when low on bandwidth and a vote, consensus, or
1918 certificate is requested.
1919 - If-modified-since is now implemented properly for all kinds of
1920 certificate requests.
1922 o Minor bugfixes (network statuses):
1923 - Tweak the implementation of proposal 109 slightly: allow at most
1924 two Tor servers on the same IP address, except if it's the location
1925 of a directory authority, in which case allow five. Bugfix on
1928 o Minor bugfixes (controller):
1929 - When sending a status event to the controller telling it that an
1930 OR address is reachable, set the port correctly. (Previously we
1931 were reporting the dir port.) Bugfix on 0.1.2.x.
1933 o Minor bugfixes (v3 directory system):
1934 - Fix logic to look up a cert by its signing key digest. Bugfix on
1936 - Only change the reply to a vote to "OK" if it's not already
1937 set. This gets rid of annoying "400 OK" log messages, which may
1938 have been masking some deeper issue. Bugfix on 0.2.0.7-alpha.
1939 - When we get a valid consensus, recompute the voting schedule.
1940 - Base the valid-after time of a vote on the consensus voting
1941 schedule, not on our preferred schedule.
1942 - Make the return values and messages from signature uploads and
1943 downloads more sensible.
1944 - Fix a memory leak when serving votes and consensus documents, and
1945 another when serving certificates.
1947 o Minor bugfixes (performance):
1948 - Use a slightly simpler string hashing algorithm (copying Python's
1949 instead of Java's) and optimize our digest hashing algorithm to take
1950 advantage of 64-bit platforms and to remove some possibly-costly
1952 - Fix a minor memory leak whenever we parse guards from our state
1953 file. Bugfix on 0.2.0.7-alpha.
1954 - Fix a minor memory leak whenever we write out a file. Bugfix on
1956 - Fix a minor memory leak whenever a controller sends the PROTOCOLINFO
1957 command. Bugfix on 0.2.0.5-alpha.
1959 o Minor bugfixes (portability):
1960 - On some platforms, accept() can return a broken address. Detect
1961 this more quietly, and deal accordingly. Fixes bug 483.
1962 - Stop calling tor_strlower() on uninitialized memory in some cases.
1963 Bugfix in 0.2.0.7-alpha.
1965 o Minor bugfixes (usability):
1966 - Treat some 403 responses from directory servers as INFO rather than
1967 WARN-severity events.
1968 - It's not actually an error to find a non-pending entry in the DNS
1969 cache when canceling a pending resolve. Don't log unless stuff is
1970 fishy. Resolves bug 463.
1972 o Minor bugfixes (anonymity):
1973 - Never report that we've used more bandwidth than we're willing to
1974 relay: it leaks how much non-relay traffic we're using. Resolves
1976 - When looking for a circuit to cannibalize, consider family as well
1977 as identity. Fixes bug 438. Bugfix on 0.1.0.x (which introduced
1978 circuit cannibalization).
1980 o Code simplifications and refactoring:
1981 - Make a bunch of functions static. Remove some dead code.
1982 - Pull out about a third of the really big routerlist.c; put it in a
1983 new module, networkstatus.c.
1984 - Merge the extra fields in local_routerstatus_t back into
1985 routerstatus_t: we used to need one routerstatus_t for each
1986 authority's opinion, plus a local_routerstatus_t for the locally
1987 computed consensus opinion. To save space, we put the locally
1988 modified fields into local_routerstatus_t, and only the common
1989 stuff into routerstatus_t. But once v3 directories are in use,
1990 clients and caches will no longer need to hold authority opinions;
1991 thus, the rationale for keeping the types separate is now gone.
1992 - Make the code used to reschedule and reattempt downloads more
1994 - Turn all 'Are we a directory server/mirror?' logic into a call to
1996 - Remove the code to generate the oldest (v1) directory format.
1997 The code has been disabled since 0.2.0.5-alpha.
2000 Changes in version 0.2.0.7-alpha - 2007-09-21
2001 This seventh development snapshot makes bridges work again, makes bridge
2002 authorities work for the first time, fixes two huge performance flaws
2003 in hidden services, and fixes a variety of minor issues.
2005 o New directory authorities:
2006 - Set up moria1 and tor26 as the first v3 directory authorities. See
2007 doc/spec/dir-spec.txt for details on the new directory design.
2009 o Major bugfixes (crashes):
2010 - Fix possible segfaults in functions called from
2011 rend_process_relay_cell(). Bugfix on 0.1.2.x.
2013 o Major bugfixes (bridges):
2014 - Fix a bug that made servers send a "404 Not found" in response to
2015 attempts to fetch their server descriptor. This caused Tor servers
2016 to take many minutes to establish reachability for their DirPort,
2017 and it totally crippled bridges. Bugfix on 0.2.0.5-alpha.
2018 - Make "UpdateBridgesFromAuthority" torrc option work: when bridge
2019 users configure that and specify a bridge with an identity
2020 fingerprint, now they will lookup the bridge descriptor at the
2021 default bridge authority via a one-hop tunnel, but once circuits
2022 are established they will switch to a three-hop tunnel for later
2023 connections to the bridge authority. Bugfix in 0.2.0.3-alpha.
2025 o Major bugfixes (hidden services):
2026 - Hidden services were choosing introduction points uniquely by
2027 hexdigest, but when constructing the hidden service descriptor
2028 they merely wrote the (potentially ambiguous) nickname.
2029 - Clients now use the v2 intro format for hidden service
2030 connections: they specify their chosen rendezvous point by identity
2031 digest rather than by (potentially ambiguous) nickname. Both
2032 are bugfixes on 0.1.2.x, and they could speed up hidden service
2033 connections dramatically. Thanks to Karsten Loesing.
2035 o Minor features (security):
2036 - As a client, do not believe any server that tells us that an
2037 address maps to an internal address space.
2038 - Make it possible to enable HashedControlPassword and
2039 CookieAuthentication at the same time.
2041 o Minor features (guard nodes):
2042 - Tag every guard node in our state file with the version that
2043 we believe added it, or with our own version if we add it. This way,
2044 if a user temporarily runs an old version of Tor and then switches
2045 back to a new one, she doesn't automatically lose her guards.
2047 o Minor features (speed):
2048 - When implementing AES counter mode, update only the portions of the
2049 counter buffer that need to change, and don't keep separate
2050 network-order and host-order counters when they are the same (i.e.,
2051 on big-endian hosts.)
2053 o Minor features (controller):
2054 - Accept LF instead of CRLF on controller, since some software has a
2055 hard time generating real Internet newlines.
2056 - Add GETINFO values for the server status events
2057 "REACHABILITY_SUCCEEDED" and "GOOD_SERVER_DESCRIPTOR". Patch from
2061 - Routers no longer include bandwidth-history lines in their
2062 descriptors; this information is already available in extra-info
2063 documents, and including it in router descriptors took up 60%
2064 (!) of compressed router descriptor downloads. Completes
2065 implementation of proposal 104.
2066 - Remove the contrib scripts ExerciseServer.py, PathDemo.py,
2067 and TorControl.py, as they use the old v0 controller protocol,
2068 and are obsoleted by TorFlow anyway.
2069 - Drop support for v1 rendezvous descriptors, since we never used
2070 them anyway, and the code has probably rotted by now. Based on
2071 patch from Karsten Loesing.
2072 - On OSX, stop warning the user that kqueue support in libevent is
2073 "experimental", since it seems to have worked fine for ages.
2076 - When generating information telling us how to extend to a given
2077 router, do not try to include the nickname if it is absent. Fixes
2078 bug 467. Bugfix on 0.2.0.3-alpha.
2079 - Fix a user-triggerable (but not remotely-triggerable) segfault
2080 in expand_filename(). Bugfix on 0.1.2.x.
2081 - Fix a memory leak when freeing incomplete requests from DNSPort.
2082 Found by Niels Provos with valgrind. Bugfix on 0.2.0.1-alpha.
2083 - Don't try to access (or alter) the state file when running
2084 --list-fingerprint or --verify-config or --hash-password. (Resolves
2085 bug 499.) Bugfix on 0.1.2.x.
2086 - Servers used to decline to publish their DirPort if their
2087 BandwidthRate, RelayBandwidthRate, or MaxAdvertisedBandwidth
2088 were below a threshold. Now they only look at BandwidthRate and
2089 RelayBandwidthRate. Bugfix on 0.1.2.x.
2090 - Remove an optimization in the AES counter-mode code that assumed
2091 that the counter never exceeded 2^68. When the counter can be set
2092 arbitrarily as an IV (as it is by Karsten's new hidden services
2093 code), this assumption no longer holds. Bugfix on 0.1.2.x.
2094 - Resume listing "AUTHORITY" flag for authorities in network status.
2095 Bugfix on 0.2.0.3-alpha; reported by Alex de Joode.
2097 o Code simplifications and refactoring:
2098 - Revamp file-writing logic so we don't need to have the entire
2099 contents of a file in memory at once before we write to disk. Tor,
2101 - Turn "descriptor store" into a full-fledged type.
2102 - Move all NT services code into a separate source file.
2103 - Unify all code that computes medians, percentile elements, etc.
2104 - Get rid of a needless malloc when parsing address policies.
2107 Changes in version 0.1.2.17 - 2007-08-30
2108 Tor 0.1.2.17 features a new Vidalia version in the Windows and OS
2109 X bundles. Vidalia 0.0.14 makes authentication required for the
2110 ControlPort in the default configuration, which addresses important
2111 security risks. Everybody who uses Vidalia (or another controller)
2114 In addition, this Tor update fixes major load balancing problems with
2115 path selection, which should speed things up a lot once many people
2118 o Major bugfixes (security):
2119 - We removed support for the old (v0) control protocol. It has been
2120 deprecated since Tor 0.1.1.1-alpha, and keeping it secure has
2121 become more of a headache than it's worth.
2123 o Major bugfixes (load balancing):
2124 - When choosing nodes for non-guard positions, weight guards
2125 proportionally less, since they already have enough load. Patch
2127 - Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
2128 will allow fast Tor servers to get more attention.
2129 - When we're upgrading from an old Tor version, forget our current
2130 guards and pick new ones according to the new weightings. These
2131 three load balancing patches could raise effective network capacity
2132 by a factor of four. Thanks to Mike Perry for measurements.
2134 o Major bugfixes (stream expiration):
2135 - Expire not-yet-successful application streams in all cases if
2136 they've been around longer than SocksTimeout. Right now there are
2137 some cases where the stream will live forever, demanding a new
2138 circuit every 15 seconds. Fixes bug 454; reported by lodger.
2140 o Minor features (controller):
2141 - Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
2142 is valid before any authentication has been received. It tells
2143 a controller what kind of authentication is expected, and what
2144 protocol is spoken. Implements proposal 119.
2146 o Minor bugfixes (performance):
2147 - Save on most routerlist_assert_ok() calls in routerlist.c, thus
2148 greatly speeding up loading cached-routers from disk on startup.
2149 - Disable sentinel-based debugging for buffer code: we squashed all
2150 the bugs that this was supposed to detect a long time ago, and now
2151 its only effect is to change our buffer sizes from nice powers of
2152 two (which platform mallocs tend to like) to values slightly over
2153 powers of two (which make some platform mallocs sad).
2155 o Minor bugfixes (misc):
2156 - If exit bandwidth ever exceeds one third of total bandwidth, then
2157 use the correct formula to weight exit nodes when choosing paths.
2158 Based on patch from Mike Perry.
2159 - Choose perfectly fairly among routers when choosing by bandwidth and
2160 weighting by fraction of bandwidth provided by exits. Previously, we
2161 would choose with only approximate fairness, and correct ourselves
2162 if we ran off the end of the list.
2163 - If we require CookieAuthentication but we fail to write the
2164 cookie file, we would warn but not exit, and end up in a state
2165 where no controller could authenticate. Now we exit.
2166 - If we require CookieAuthentication, stop generating a new cookie
2167 every time we change any piece of our config.
2168 - Refuse to start with certain directory authority keys, and
2169 encourage people using them to stop.
2170 - Terminate multi-line control events properly. Original patch
2172 - Fix a minor memory leak when we fail to find enough suitable
2173 servers to choose a circuit.
2174 - Stop leaking part of the descriptor when we run into a particularly
2175 unparseable piece of it.
2178 Changes in version 0.2.0.6-alpha - 2007-08-26
2179 This sixth development snapshot features a new Vidalia version in the
2180 Windows and OS X bundles. Vidalia 0.0.14 makes authentication required for
2181 the ControlPort in the default configuration, which addresses important
2184 In addition, this snapshot fixes major load balancing problems
2185 with path selection, which should speed things up a lot once many
2186 people have upgraded. The directory authorities also use a new
2187 mean-time-between-failure approach to tracking which servers are stable,
2188 rather than just looking at the most recent uptime.
2190 o New directory authorities:
2191 - Set up Tonga as the default bridge directory authority.
2194 - Directory authorities now track servers by weighted
2195 mean-times-between-failures. When we have 4 or more days of data,
2196 use measured MTBF rather than declared uptime to decide whether
2197 to call a router Stable. Implements proposal 108.
2199 o Major bugfixes (load balancing):
2200 - When choosing nodes for non-guard positions, weight guards
2201 proportionally less, since they already have enough load. Patch
2203 - Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
2204 will allow fast Tor servers to get more attention.
2205 - When we're upgrading from an old Tor version, forget our current
2206 guards and pick new ones according to the new weightings. These
2207 three load balancing patches could raise effective network capacity
2208 by a factor of four. Thanks to Mike Perry for measurements.
2210 o Major bugfixes (descriptor parsing):
2211 - Handle unexpected whitespace better in malformed descriptors. Bug
2212 found using Benedikt Boss's new Tor fuzzer! Bugfix on 0.2.0.x.
2215 - There is now an ugly, temporary "desc/all-recent-extrainfo-hack"
2216 GETINFO for Torstat to use until it can switch to using extrainfos.
2217 - Optionally (if built with -DEXPORTMALLINFO) export the output
2218 of mallinfo via http, as tor/mallinfo.txt. Only accessible
2222 - Do not intermix bridge routers with controller-added
2223 routers. (Bugfix on 0.2.0.x)
2224 - Do not fail with an assert when accept() returns an unexpected
2225 address family. Addresses but does not wholly fix bug 483. (Bugfix
2227 - Let directory authorities startup even when they can't generate
2228 a descriptor immediately, e.g. because they don't know their
2230 - Stop putting the authentication cookie in a file called "0"
2231 in your working directory if you don't specify anything for the
2232 new CookieAuthFile option. Reported by Matt Edman.
2233 - Make it possible to read the PROTOCOLINFO response in a way that
2234 conforms to our control-spec. Reported by Matt Edman.
2235 - Fix a minor memory leak when we fail to find enough suitable
2236 servers to choose a circuit. Bugfix on 0.1.2.x.
2237 - Stop leaking part of the descriptor when we run into a particularly
2238 unparseable piece of it. Bugfix on 0.1.2.x.
2239 - Unmap the extrainfo cache file on exit.
2242 Changes in version 0.2.0.5-alpha - 2007-08-19
2243 This fifth development snapshot fixes compilation on Windows again;
2244 fixes an obnoxious client-side bug that slowed things down and put
2245 extra load on the network; gets us closer to using the v3 directory
2246 voting scheme; makes it easier for Tor controllers to use cookie-based
2247 authentication; and fixes a variety of other bugs.
2250 - Version 1 directories are no longer generated in full. Instead,
2251 authorities generate and serve "stub" v1 directories that list
2252 no servers. This will stop Tor versions 0.1.0.x and earlier from
2253 working, but (for security reasons) nobody should be running those
2256 o Major bugfixes (compilation, 0.2.0.x):
2257 - Try to fix Win32 compilation again: improve checking for IPv6 types.
2258 - Try to fix MSVC compilation: build correctly on platforms that do
2259 not define s6_addr16 or s6_addr32.
2260 - Fix compile on platforms without getaddrinfo: bug found by Li-Hui
2263 o Major bugfixes (stream expiration):
2264 - Expire not-yet-successful application streams in all cases if
2265 they've been around longer than SocksTimeout. Right now there are
2266 some cases where the stream will live forever, demanding a new
2267 circuit every 15 seconds. Bugfix on 0.1.2.7-alpha; fixes bug 454;
2270 o Minor features (directory servers):
2271 - When somebody requests a list of statuses or servers, and we have
2272 none of those, return a 404 rather than an empty 200.
2274 o Minor features (directory voting):
2275 - Store v3 consensus status consensuses on disk, and reload them
2278 o Minor features (security):
2279 - Warn about unsafe ControlPort configurations.
2280 - Refuse to start with certain directory authority keys, and
2281 encourage people using them to stop.
2283 o Minor features (controller):
2284 - Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
2285 is valid before any authentication has been received. It tells
2286 a controller what kind of authentication is expected, and what
2287 protocol is spoken. Implements proposal 119.
2288 - New config option CookieAuthFile to choose a new location for the
2289 cookie authentication file, and config option
2290 CookieAuthFileGroupReadable to make it group-readable.
2292 o Minor features (unit testing):
2293 - Add command-line arguments to unit-test executable so that we can
2294 invoke any chosen test from the command line rather than having
2295 to run the whole test suite at once; and so that we can turn on
2296 logging for the unit tests.
2298 o Minor bugfixes (on 0.1.2.x):
2299 - If we require CookieAuthentication but we fail to write the
2300 cookie file, we would warn but not exit, and end up in a state
2301 where no controller could authenticate. Now we exit.
2302 - If we require CookieAuthentication, stop generating a new cookie
2303 every time we change any piece of our config.
2304 - When loading bandwidth history, do not believe any information in
2305 the future. Fixes bug 434.
2306 - When loading entry guard information, do not believe any information
2308 - When we have our clock set far in the future and generate an
2309 onion key, then re-set our clock to be correct, we should not stop
2310 the onion key from getting rotated.
2311 - Clean up torrc sample config file.
2312 - Do not automatically run configure from autogen.sh. This
2313 non-standard behavior tended to annoy people who have built other
2316 o Minor bugfixes (on 0.2.0.x):
2317 - Fix a bug with AutomapHostsOnResolve that would always cause
2318 the second request to fail. Bug reported by Kate. Bugfix on
2320 - Fix a bug in ADDRMAP controller replies that would sometimes
2321 try to print a NULL. Patch from tup.
2322 - Read v3 directory authority keys from the right location.
2323 - Numerous bugfixes to directory voting code.
2326 Changes in version 0.1.2.16 - 2007-08-01
2327 Tor 0.1.2.16 fixes a critical security vulnerability that allows a
2328 remote attacker in certain situations to rewrite the user's torrc
2329 configuration file. This can completely compromise anonymity of users
2330 in most configurations, including those running the Vidalia bundles,
2331 TorK, etc. Or worse.
2333 o Major security fixes:
2334 - Close immediately after missing authentication on control port;
2335 do not allow multiple authentication attempts.
2338 Changes in version 0.2.0.4-alpha - 2007-08-01
2339 This fourth development snapshot fixes a critical security vulnerability
2340 for most users, specifically those running Vidalia, TorK, etc. Everybody
2341 should upgrade to either 0.1.2.16 or 0.2.0.4-alpha.
2343 o Major security fixes:
2344 - Close immediately after missing authentication on control port;
2345 do not allow multiple authentication attempts.
2347 o Major bugfixes (compilation):
2348 - Fix win32 compilation: apparently IN_ADDR and IN6_ADDR are already
2351 o Minor features (performance):
2352 - Be even more aggressive about releasing RAM from small
2353 empty buffers. Thanks to our free-list code, this shouldn't be too
2354 performance-intensive.
2355 - Disable sentinel-based debugging for buffer code: we squashed all
2356 the bugs that this was supposed to detect a long time ago, and
2357 now its only effect is to change our buffer sizes from nice
2358 powers of two (which platform mallocs tend to like) to values
2359 slightly over powers of two (which make some platform mallocs sad).
2360 - Log malloc statistics from mallinfo() on platforms where it
2364 Changes in version 0.2.0.3-alpha - 2007-07-29
2365 This third development snapshot introduces new experimental
2366 blocking-resistance features and a preliminary version of the v3
2367 directory voting design, and includes many other smaller features
2371 - The first pieces of our "bridge" design for blocking-resistance
2372 are implemented. People can run bridge directory authorities;
2373 people can run bridges; and people can configure their Tor clients
2374 with a set of bridges to use as the first hop into the Tor network.
2375 See http://archives.seul.org/or/talk/Jul-2007/msg00249.html for
2377 - Create listener connections before we setuid to the configured
2378 User and Group. Now non-Windows users can choose port values
2379 under 1024, start Tor as root, and have Tor bind those ports
2380 before it changes to another UID. (Windows users could already
2382 - Added a new ConstrainedSockets config option to set SO_SNDBUF and
2383 SO_RCVBUF on TCP sockets. Hopefully useful for Tor servers running
2384 on "vserver" accounts. (Patch from coderman.)
2385 - Be even more aggressive about separating local traffic from relayed
2386 traffic when RelayBandwidthRate is set. (Refines proposal 111.)
2388 o Major features (experimental):
2389 - First cut of code for "v3 dir voting": directory authorities will
2390 vote on a common network status document rather than each publishing
2391 their own opinion. This code needs more testing and more corner-case
2392 handling before it's ready for use.
2395 - Directory authorities now call routers Fast if their bandwidth is
2396 at least 100KB/s, and consider their bandwidth adequate to be a
2397 Guard if it is at least 250KB/s, no matter the medians. This fix
2398 complements proposal 107. [Bugfix on 0.1.2.x]
2399 - Directory authorities now never mark more than 3 servers per IP as
2400 Valid and Running. (Implements proposal 109, by Kevin Bauer and
2402 - Minor change to organizationName and commonName generation
2403 procedures in TLS certificates during Tor handshakes, to invalidate
2404 some earlier censorware approaches. This is not a long-term
2405 solution, but applying it will give us a bit of time to look into
2406 the epidemiology of countermeasures as they spread.
2408 o Major bugfixes (directory):
2409 - Rewrite directory tokenization code to never run off the end of
2410 a string. Fixes bug 455. Patch from croup. [Bugfix on 0.1.2.x]
2412 o Minor features (controller):
2413 - Add a SOURCE_ADDR field to STREAM NEW events so that controllers can
2414 match requests to applications. (Patch from Robert Hogan.)
2415 - Report address and port correctly on connections to DNSPort. (Patch
2417 - Add a RESOLVE command to launch hostname lookups. (Original patch
2419 - Add GETINFO status/enough-dir-info to let controllers tell whether
2420 Tor has downloaded sufficient directory information. (Patch
2422 - You can now use the ControlSocket option to tell Tor to listen for
2423 controller connections on Unix domain sockets on systems that
2424 support them. (Patch from Peter Palfrader.)
2425 - STREAM NEW events are generated for DNSPort requests and for
2426 tunneled directory connections. (Patch from Robert Hogan.)
2427 - New "GETINFO address-mappings/*" command to get address mappings
2428 with expiry information. "addr-mappings/*" is now deprecated.
2431 o Minor features (misc):
2432 - Merge in some (as-yet-unused) IPv6 address manipulation code. (Patch
2434 - The tor-gencert tool for v3 directory authorities now creates all
2435 files as readable to the file creator only, and write-protects
2436 the authority identity key.
2437 - When dumping memory usage, list bytes used in buffer memory
2439 - When running with dmalloc, dump more stats on hup and on exit.
2440 - Directory authorities now fail quickly and (relatively) harmlessly
2441 if they generate a network status document that is somehow
2444 o Traffic load balancing improvements:
2445 - If exit bandwidth ever exceeds one third of total bandwidth, then
2446 use the correct formula to weight exit nodes when choosing paths.
2447 (Based on patch from Mike Perry.)
2448 - Choose perfectly fairly among routers when choosing by bandwidth and
2449 weighting by fraction of bandwidth provided by exits. Previously, we
2450 would choose with only approximate fairness, and correct ourselves
2451 if we ran off the end of the list. [Bugfix on 0.1.2.x]
2453 o Performance improvements:
2454 - Be more aggressive with freeing buffer RAM or putting it on the
2456 - Use Critical Sections rather than Mutexes for synchronizing threads
2457 on win32; Mutexes are heavier-weight, and designed for synchronizing
2460 o Deprecated and removed features:
2461 - RedirectExits is now deprecated.
2462 - Stop allowing address masks that do not correspond to bit prefixes.
2463 We have warned about these for a really long time; now it's time
2464 to reject them. (Patch from croup.)
2466 o Minor bugfixes (directory):
2467 - Fix another crash bug related to extra-info caching. (Bug found by
2468 Peter Palfrader.) [Bugfix on 0.2.0.2-alpha]
2469 - Directories no longer return a "304 not modified" when they don't
2470 have the networkstatus the client asked for. Also fix a memory
2471 leak when returning 304 not modified. [Bugfixes on 0.2.0.2-alpha]
2472 - We had accidentally labelled 0.1.2.x directory servers as not
2473 suitable for begin_dir requests, and had labelled no directory
2474 servers as suitable for uploading extra-info documents. [Bugfix
2477 o Minor bugfixes (dns):
2478 - Fix a crash when DNSPort is set more than once. (Patch from Robert
2479 Hogan.) [Bugfix on 0.2.0.2-alpha]
2480 - Add DNSPort connections to the global connection list, so that we
2481 can time them out correctly. (Bug found by Robert Hogan.) [Bugfix
2483 - Fix a dangling reference that could lead to a crash when DNSPort is
2484 changed or closed (Patch from Robert Hogan.) [Bugfix on
2487 o Minor bugfixes (controller):
2488 - Provide DNS expiry times in GMT, not in local time. For backward
2489 compatibility, ADDRMAP events only provide GMT expiry in an extended
2490 field. "GETINFO address-mappings" always does the right thing.
2491 - Use CRLF line endings properly in NS events.
2492 - Terminate multi-line control events properly. (Original patch
2493 from tup.) [Bugfix on 0.1.2.x-alpha]
2494 - Do not include spaces in SOURCE_ADDR fields in STREAM
2495 events. Resolves bug 472. [Bugfix on 0.2.0.x-alpha]
2498 Changes in version 0.1.2.15 - 2007-07-17
2499 Tor 0.1.2.15 fixes several crash bugs, fixes some anonymity-related
2500 problems, fixes compilation on BSD, and fixes a variety of other
2501 bugs. Everybody should upgrade.
2503 o Major bugfixes (compilation):
2504 - Fix compile on FreeBSD/NetBSD/OpenBSD. Oops.
2506 o Major bugfixes (crashes):
2507 - Try even harder not to dereference the first character after
2508 an mmap(). Reported by lodger.
2509 - Fix a crash bug in directory authorities when we re-number the
2510 routerlist while inserting a new router.
2511 - When the cached-routers file is an even multiple of the page size,
2512 don't run off the end and crash. (Fixes bug 455; based on idea
2514 - Fix eventdns.c behavior on Solaris: It is critical to include
2515 orconfig.h _before_ sys/types.h, so that we can get the expected
2516 definition of _FILE_OFFSET_BITS.
2518 o Major bugfixes (security):
2519 - Fix a possible buffer overrun when using BSD natd support. Bug
2521 - When sending destroy cells from a circuit's origin, don't include
2522 the reason for tearing down the circuit. The spec says we didn't,
2523 and now we actually don't. Reported by lodger.
2524 - Keep streamids from different exits on a circuit separate. This
2525 bug may have allowed other routers on a given circuit to inject
2526 cells into streams. Reported by lodger; fixes bug 446.
2527 - If there's a never-before-connected-to guard node in our list,
2528 never choose any guards past it. This way we don't expand our
2529 guard list unless we need to.
2531 o Minor bugfixes (guard nodes):
2532 - Weight guard selection by bandwidth, so that low-bandwidth nodes
2533 don't get overused as guards.
2535 o Minor bugfixes (directory):
2536 - Correctly count the number of authorities that recommend each
2537 version. Previously, we were under-counting by 1.
2538 - Fix a potential crash bug when we load many server descriptors at
2539 once and some of them make others of them obsolete. Fixes bug 458.
2541 o Minor bugfixes (hidden services):
2542 - Stop tearing down the whole circuit when the user asks for a
2543 connection to a port that the hidden service didn't configure.
2546 o Minor bugfixes (misc):
2547 - On Windows, we were preventing other processes from reading
2548 cached-routers while Tor was running. Reported by janbar.
2549 - Fix a possible (but very unlikely) bug in picking routers by
2550 bandwidth. Add a log message to confirm that it is in fact
2551 unlikely. Patch from lodger.
2552 - Backport a couple of memory leak fixes.
2553 - Backport miscellaneous cosmetic bugfixes.
2556 Changes in version 0.2.0.2-alpha - 2007-06-02
2557 o Major bugfixes on 0.2.0.1-alpha:
2558 - Fix an assertion failure related to servers without extra-info digests.
2559 Resolves bugs 441 and 442.
2561 o Minor features (directory):
2562 - Support "If-Modified-Since" when answering HTTP requests for
2563 directories, running-routers documents, and network-status documents.
2564 (There's no need to support it for router descriptors, since those
2565 are downloaded by descriptor digest.)
2567 o Minor build issues:
2568 - Clear up some MIPSPro compiler warnings.
2569 - When building from a tarball on a machine that happens to have SVK
2570 installed, report the micro-revision as whatever version existed
2571 in the tarball, not as "x".
2574 Changes in version 0.2.0.1-alpha - 2007-06-01
2575 This early development snapshot provides new features for people running
2576 Tor as both a client and a server (check out the new RelayBandwidth
2577 config options); lets Tor run as a DNS proxy; and generally moves us
2578 forward on a lot of fronts.
2580 o Major features, server usability:
2581 - New config options RelayBandwidthRate and RelayBandwidthBurst:
2582 a separate set of token buckets for relayed traffic. Right now
2583 relayed traffic is defined as answers to directory requests, and
2584 OR connections that don't have any local circuits on them.
2586 o Major features, client usability:
2587 - A client-side DNS proxy feature to replace the need for
2588 dns-proxy-tor: Just set "DNSPort 9999", and Tor will now listen
2589 for DNS requests on port 9999, use the Tor network to resolve them
2590 anonymously, and send the reply back like a regular DNS server.
2591 The code still only implements a subset of DNS.
2592 - Make PreferTunneledDirConns and TunnelDirConns work even when
2593 we have no cached directory info. This means Tor clients can now
2594 do all of their connections protected by TLS.
2596 o Major features, performance and efficiency:
2597 - Directory authorities accept and serve "extra info" documents for
2598 routers. These documents contain fields from router descriptors
2599 that aren't usually needed, and that use a lot of excess
2600 bandwidth. Once these fields are removed from router descriptors,
2601 the bandwidth savings should be about 60%. [Partially implements
2603 - Servers upload extra-info documents to any authority that accepts
2604 them. Authorities (and caches that have been configured to download
2605 extra-info documents) download them as needed. [Partially implements
2607 - Change the way that Tor buffers data that it is waiting to write.
2608 Instead of queueing data cells in an enormous ring buffer for each
2609 client->OR or OR->OR connection, we now queue cells on a separate
2610 queue for each circuit. This lets us use less slack memory, and
2611 will eventually let us be smarter about prioritizing different kinds
2613 - Use memory pools to allocate cells with better speed and memory
2614 efficiency, especially on platforms where malloc() is inefficient.
2615 - Stop reading on edge connections when their corresponding circuit
2616 buffers are full; start again as the circuits empty out.
2618 o Major features, other:
2619 - Add an HSAuthorityRecordStats option that hidden service authorities
2620 can use to track statistics of overall hidden service usage without
2621 logging information that would be very useful to an attacker.
2622 - Start work implementing multi-level keys for directory authorities:
2623 Add a standalone tool to generate key certificates. (Proposal 103.)
2626 - Directory authorities now call routers Stable if they have an
2627 uptime of at least 30 days, even if that's not the median uptime
2628 in the network. Implements proposal 107, suggested by Kevin Bauer
2631 o Minor fixes (resource management):
2632 - Count the number of open sockets separately from the number
2633 of active connection_t objects. This will let us avoid underusing
2634 our allocated connection limit.
2635 - We no longer use socket pairs to link an edge connection to an
2636 anonymous directory connection or a DirPort test connection.
2637 Instead, we track the link internally and transfer the data
2638 in-process. This saves two sockets per "linked" connection (at the
2639 client and at the server), and avoids the nasty Windows socketpair()
2641 - Keep unused 4k and 16k buffers on free lists, rather than wasting 8k
2642 for every single inactive connection_t. Free items from the
2643 4k/16k-buffer free lists when they haven't been used for a while.
2645 o Minor features (build):
2646 - Make autoconf search for libevent, openssl, and zlib consistently.
2647 - Update deprecated macros in configure.in.
2648 - When warning about missing headers, tell the user to let us
2649 know if the compile succeeds anyway, so we can downgrade the
2651 - Include the current subversion revision as part of the version
2652 string: either fetch it directly if we're in an SVN checkout, do
2653 some magic to guess it if we're in an SVK checkout, or use
2654 the last-detected version if we're building from a .tar.gz.
2655 Use this version consistently in log messages.
2657 o Minor features (logging):
2658 - Always prepend "Bug: " to any log message about a bug.
2659 - Put a platform string (e.g. "Linux i686") in the startup log
2660 message, so when people paste just their logs, we know if it's
2661 OpenBSD or Windows or what.
2662 - When logging memory usage, break down memory used in buffers by
2665 o Minor features (directory system):
2666 - New config option V2AuthoritativeDirectory that all directory
2667 authorities should set. This will let future authorities choose
2668 not to serve V2 directory information.
2669 - Directory authorities allow multiple router descriptors and/or extra
2670 info documents to be uploaded in a single go. This will make
2671 implementing proposal 104 simpler.
2673 o Minor features (controller):
2674 - Add a new config option __DisablePredictedCircuits designed for
2675 use by the controller, when we don't want Tor to build any circuits
2677 - Let the controller specify HOP=%d as an argument to ATTACHSTREAM,
2678 so we can exit from the middle of the circuit.
2679 - Implement "getinfo status/circuit-established".
2680 - Implement "getinfo status/version/..." so a controller can tell
2681 whether the current version is recommended, and whether any versions
2682 are good, and how many authorities agree. (Patch from shibz.)
2684 o Minor features (hidden services):
2685 - Allow multiple HiddenServicePort directives with the same virtual
2686 port; when they occur, the user is sent round-robin to one
2687 of the target ports chosen at random. Partially fixes bug 393 by
2688 adding limited ad-hoc round-robining.
2690 o Minor features (other):
2692 - Add a new AutomapHostsOnResolve option: when it is enabled, any
2693 resolve request for hosts matching a given pattern causes Tor to
2694 generate an internal virtual address mapping for that host. This
2695 allows DNSPort to work sensibly with hidden service users. By
2696 default, .exit and .onion addresses are remapped; the list of
2697 patterns can be reconfigured with AutomapHostsSuffixes.
2698 - Add an "-F" option to tor-resolve to force a resolve for a .onion
2699 address. Thanks to the AutomapHostsOnResolve option, this is no
2700 longer a completely silly thing to do.
2701 - If Tor is invoked from something that isn't a shell (e.g. Vidalia),
2702 now we expand "-f ~/.tor/torrc" correctly. Suggested by Matt Edman.
2703 - Treat "2gb" when given in torrc for a bandwidth as meaning 2gb,
2704 minus 1 byte: the actual maximum declared bandwidth.
2707 - Removed support for the old binary "version 0" controller protocol.
2708 This has been deprecated since 0.1.1, and warnings have been issued
2709 since 0.1.2. When we encounter a v0 control message, we now send
2710 back an error and close the connection.
2711 - Remove the old "dns worker" server DNS code: it hasn't been default
2712 since 0.1.2.2-alpha, and all the servers seem to be using the new
2715 o Minor bugfixes (portability):
2716 - Even though Windows is equally happy with / and \ as path separators,
2717 try to use \ consistently on Windows and / consistently on Unix: it
2718 makes the log messages nicer.
2719 - Correctly report platform name on Windows 95 OSR2 and Windows 98 SE.
2720 - Read resolv.conf files correctly on platforms where read() returns
2721 partial results on small file reads.
2723 o Minor bugfixes (directory):
2724 - Correctly enforce that elements of directory objects do not appear
2725 more often than they are allowed to appear.
2726 - When we are reporting the DirServer line we just parsed, we were
2727 logging the second stanza of the key fingerprint, not the first.
2729 o Minor bugfixes (logging):
2730 - When we hit an EOF on a log (probably because we're shutting down),
2731 don't try to remove the log from the list: just mark it as
2732 unusable. (Bulletproofs against bug 222.)
2734 o Minor bugfixes (other):
2735 - In the exitlist script, only consider the most recently published
2736 server descriptor for each server. Also, when the user requests
2737 a list of servers that _reject_ connections to a given address,
2738 explicitly exclude the IPs that also have servers that accept
2739 connections to that address. (Resolves bug 405.)
2740 - Stop allowing hibernating servers to be "stable" or "fast".
2741 - On Windows, we were preventing other processes from reading
2742 cached-routers while Tor was running. (Reported by janbar)
2743 - Make the NodeFamilies config option work. (Reported by
2744 lodger -- it has never actually worked, even though we added it
2746 - Check return values from pthread_mutex functions.
2747 - Don't save non-general-purpose router descriptors to the disk cache,
2748 because we have no way of remembering what their purpose was when
2750 - Add even more asserts to hunt down bug 417.
2751 - Build without verbose warnings even on (not-yet-released) gcc 4.2.
2752 - Fix a possible (but very unlikely) bug in picking routers by bandwidth.
2753 Add a log message to confirm that it is in fact unlikely.
2755 o Minor bugfixes (controller):
2756 - Make 'getinfo fingerprint' return a 551 error if we're not a
2757 server, so we match what the control spec claims we do. Reported
2759 - Fix a typo in an error message when extendcircuit fails that
2760 caused us to not follow the \r\n-based delimiter protocol. Reported
2763 o Code simplifications and refactoring:
2764 - Stop passing around circuit_t and crypt_path_t pointers that are
2765 implicit in other procedure arguments.
2766 - Drop the old code to choke directory connections when the
2767 corresponding OR connections got full: thanks to the cell queue
2768 feature, OR conns don't get full any more.
2769 - Make dns_resolve() handle attaching connections to circuits
2770 properly, so the caller doesn't have to.
2771 - Rename wants_to_read and wants_to_write to read/write_blocked_on_bw.
2772 - Keep the connection array as a dynamic smartlist_t, rather than as
2773 a fixed-sized array. This is important, as the number of connections
2774 is becoming increasingly decoupled from the number of sockets.
2777 Changes in version 0.1.2.14 - 2007-05-25
2778 Tor 0.1.2.14 changes the addresses of two directory authorities (this
2779 change especially affects those who serve or use hidden services),
2780 and fixes several other crash- and security-related bugs.
2782 o Directory authority changes:
2783 - Two directory authorities (moria1 and moria2) just moved to new
2784 IP addresses. This change will particularly affect those who serve
2785 or use hidden services.
2787 o Major bugfixes (crashes):
2788 - If a directory server runs out of space in the connection table
2789 as it's processing a begin_dir request, it will free the exit stream
2790 but leave it attached to the circuit, leading to unpredictable
2791 behavior. (Reported by seeess, fixes bug 425.)
2792 - Fix a bug in dirserv_remove_invalid() that would cause authorities
2793 to corrupt memory under some really unlikely scenarios.
2794 - Tighten router parsing rules. (Bugs reported by Benedikt Boss.)
2795 - Avoid segfaults when reading from mmaped descriptor file. (Reported
2798 o Major bugfixes (security):
2799 - When choosing an entry guard for a circuit, avoid using guards
2800 that are in the same family as the chosen exit -- not just guards
2801 that are exactly the chosen exit. (Reported by lodger.)
2803 o Major bugfixes (resource management):
2804 - If a directory authority is down, skip it when deciding where to get
2805 networkstatus objects or descriptors. Otherwise we keep asking
2806 every 10 seconds forever. Fixes bug 384.
2807 - Count it as a failure if we fetch a valid network-status but we
2808 don't want to keep it. Otherwise we'll keep fetching it and keep
2809 not wanting to keep it. Fixes part of bug 422.
2810 - If all of our dirservers have given us bad or no networkstatuses
2811 lately, then stop hammering them once per minute even when we
2812 think they're failed. Fixes another part of bug 422.
2815 - Actually set the purpose correctly for descriptors inserted with
2817 - When we have k non-v2 authorities in our DirServer config,
2818 we ignored the last k authorities in the list when updating our
2820 - Correctly back-off from requesting router descriptors that we are
2821 having a hard time downloading.
2822 - Read resolv.conf files correctly on platforms where read() returns
2823 partial results on small file reads.
2824 - Don't rebuild the entire router store every time we get 32K of
2825 routers: rebuild it when the journal gets very large, or when
2826 the gaps in the store get very large.
2829 - When routers publish SVN revisions in their router descriptors,
2830 authorities now include those versions correctly in networkstatus
2832 - Warn when using a version of libevent before 1.3b to run a server on
2833 OSX or BSD: these versions interact badly with userspace threads.
2836 Changes in version 0.1.2.13 - 2007-04-24
2837 This release features some major anonymity fixes, such as safer path
2838 selection; better client performance; faster bootstrapping, better
2839 address detection, and better DNS support for servers; write limiting as
2840 well as read limiting to make servers easier to run; and a huge pile of
2841 other features and bug fixes. The bundles also ship with Vidalia 0.0.11.
2843 Tor 0.1.2.13 is released in memory of Rob Levin (1955-2006), aka lilo
2844 of the Freenode IRC network, remembering his patience and vision for
2845 free speech on the Internet.
2848 - Fix a memory leak when we ask for "all" networkstatuses and we
2849 get one we don't recognize.
2850 - Add more asserts to hunt down bug 417.
2851 - Disable kqueue on OS X 10.3 and earlier, to fix bug 371.
2854 Changes in version 0.1.2.12-rc - 2007-03-16
2856 - Fix an infinite loop introduced in 0.1.2.7-alpha when we serve
2857 directory information requested inside Tor connections (i.e. via
2858 begin_dir cells). It only triggered when the same connection was
2859 serving other data at the same time. Reported by seeess.
2862 - When creating a circuit via the controller, send a 'launched'
2863 event when we're done, so we follow the spec better.
2866 Changes in version 0.1.2.11-rc - 2007-03-15
2867 o Minor bugfixes (controller), reported by daejees:
2868 - Correct the control spec to match how the code actually responds
2869 to 'getinfo addr-mappings/*'.
2870 - The control spec described a GUARDS event, but the code
2871 implemented a GUARD event. Standardize on GUARD, but let people
2875 Changes in version 0.1.2.10-rc - 2007-03-07
2876 o Major bugfixes (Windows):
2877 - Do not load the NT services library functions (which may not exist)
2878 just to detect if we're a service trying to shut down. Now we run
2879 on Win98 and friends again.
2881 o Minor bugfixes (other):
2882 - Clarify a couple of log messages.
2883 - Fix a misleading socks5 error number.
2886 Changes in version 0.1.2.9-rc - 2007-03-02
2887 o Major bugfixes (Windows):
2888 - On MinGW, use "%I64u" to printf/scanf 64-bit integers, instead
2889 of the usual GCC "%llu". This prevents a bug when saving 64-bit
2890 int configuration values: the high-order 32 bits would get
2891 truncated. In particular, we were being bitten by the default
2892 MaxAdvertisedBandwidth of 128 TB turning into 0. (Fixes bug 400
2893 and maybe also bug 397.)
2895 o Minor bugfixes (performance):
2896 - Use OpenSSL's AES implementation on platforms where it's faster.
2897 This could save us as much as 10% CPU usage.
2899 o Minor bugfixes (server):
2900 - Do not rotate onion key immediately after setting it for the first
2903 o Minor bugfixes (directory authorities):
2904 - Stop calling servers that have been hibernating for a long time
2905 "stable". Also, stop letting hibernating or obsolete servers affect
2906 uptime and bandwidth cutoffs.
2907 - Stop listing hibernating servers in the v1 directory.
2909 o Minor bugfixes (hidden services):
2910 - Upload hidden service descriptors slightly less often, to reduce
2911 load on authorities.
2913 o Minor bugfixes (other):
2914 - Fix an assert that could trigger if a controller quickly set then
2915 cleared EntryNodes. (Bug found by Udo van den Heuvel.)
2916 - On architectures where sizeof(int)>4, still clamp declarable bandwidth
2918 - Fix a potential race condition in the rpm installer. Found by
2920 - Try to fix eventdns warnings once and for all: do not treat a dns rcode
2921 of 2 as indicating that the server is completely bad; it sometimes
2922 means that the server is just bad for the request in question. (may fix
2923 the last of bug 326.)
2924 - Disable encrypted directory connections when we don't have a server
2925 descriptor for the destination. We'll get this working again in
2929 Changes in version 0.1.2.8-beta - 2007-02-26
2930 o Major bugfixes (crashes):
2931 - Stop crashing when the controller asks us to resetconf more than
2932 one config option at once. (Vidalia 0.0.11 does this.)
2933 - Fix a crash that happened on Win98 when we're given command-line
2934 arguments: don't try to load NT service functions from advapi32.dll
2935 except when we need them. (Bug introduced in 0.1.2.7-alpha;
2937 - Fix a longstanding obscure crash bug that could occur when
2938 we run out of DNS worker processes. (Resolves bug 390.)
2940 o Major bugfixes (hidden services):
2941 - Correctly detect whether hidden service descriptor downloads are
2942 in-progress. (Suggested by Karsten Loesing; fixes bug 399.)
2944 o Major bugfixes (accounting):
2945 - When we start during an accounting interval before it's time to wake
2946 up, remember to wake up at the correct time. (May fix bug 342.)
2948 o Minor bugfixes (controller):
2949 - Give the controller END_STREAM_REASON_DESTROY events _before_ we
2950 clear the corresponding on_circuit variable, and remember later
2951 that we don't need to send a redundant CLOSED event. (Resolves part
2953 - Report events where a resolve succeeded or where we got a socks
2954 protocol error correctly, rather than calling both of them
2956 - Change reported stream target addresses to IP consistently when
2957 we finally get the IP from an exit node.
2958 - Send log messages to the controller even if they happen to be very
2961 o Minor bugfixes (other):
2962 - Display correct results when reporting which versions are
2963 recommended, and how recommended they are. (Resolves bug 383.)
2964 - Improve our estimates for directory bandwidth to be less random:
2965 guess that an unrecognized directory will have the average bandwidth
2966 from all known directories, not that it will have the average
2967 bandwidth from those directories earlier than it on the list.
2968 - If we start a server with ClientOnly 1, then set ClientOnly to 0
2969 and hup, stop triggering an assert based on an empty onion_key.
2970 - On platforms with no working mmap() equivalent, don't warn the
2971 user when cached-routers doesn't exist.
2972 - Warn the user when mmap() [or its equivalent] fails for some reason
2973 other than file-not-found.
2974 - Don't warn the user when cached-routers.new doesn't exist: that's
2975 perfectly fine when starting up for the first time.
2976 - When EntryNodes are configured, rebuild the guard list to contain,
2977 in order: the EntryNodes that were guards before; the rest of the
2978 EntryNodes; the nodes that were guards before.
2979 - Mask out all signals in sub-threads; only the libevent signal
2980 handler should be processing them. This should prevent some crashes
2981 on some machines using pthreads. (Patch from coderman.)
2982 - Fix switched arguments on memset in the implementation of
2983 tor_munmap() for systems with no mmap() call.
2984 - When Tor receives a router descriptor that it asked for, but
2985 no longer wants (because it has received fresh networkstatuses
2986 in the meantime), do not warn the user. Cache the descriptor if
2987 we're a cache; drop it if we aren't.
2988 - Make earlier entry guards _really_ get retried when the network
2990 - On a malformed DNS reply, always give an error to the corresponding
2992 - Build with recent libevents on platforms that do not define the
2993 nonstandard types "u_int8_t" and friends.
2995 o Minor features (controller):
2996 - Warn the user when an application uses the obsolete binary v0
2997 control protocol. We're planning to remove support for it during
2998 the next development series, so it's good to give people some
3000 - Add STREAM_BW events to report per-entry-stream bandwidth
3001 use. (Patch from Robert Hogan.)
3002 - Rate-limit SIGNEWNYM signals in response to controllers that
3003 impolitely generate them for every single stream. (Patch from
3004 mwenge; closes bug 394.)
3005 - Make REMAP stream events have a SOURCE (cache or exit), and
3006 make them generated in every case where we get a successful
3007 connected or resolved cell.
3009 o Minor bugfixes (performance):
3010 - Call router_have_min_dir_info half as often. (This is showing up in
3011 some profiles, but not others.)
3012 - When using GCC, make log_debug never get called at all, and its
3013 arguments never get evaluated, when no debug logs are configured.
3014 (This is showing up in some profiles, but not others.)
3017 - Remove some never-implemented options. Mark PathlenCoinWeight as
3019 - Implement proposal 106: Stop requiring clients to have well-formed
3020 certificates; stop checking nicknames in certificates. (Clients
3021 have certificates so that they can look like Tor servers, but in
3022 the future we might want to allow them to look like regular TLS
3023 clients instead. Nicknames in certificates serve no purpose other
3024 than making our protocol easier to recognize on the wire.)
3025 - Revise messages on handshake failure again to be even more clear about
3026 which are incoming connections and which are outgoing.
3027 - Discard any v1 directory info that's over 1 month old (for
3028 directories) or over 1 week old (for running-routers lists).
3029 - Do not warn when individual nodes in the configuration's EntryNodes,
3030 ExitNodes, etc are down: warn only when all possible nodes
3031 are down. (Fixes bug 348.)
3032 - Always remove expired routers and networkstatus docs before checking
3033 whether we have enough information to build circuits. (Fixes
3035 - Put a lower-bound on MaxAdvertisedBandwidth.
3038 Changes in version 0.1.2.7-alpha - 2007-02-06
3039 o Major bugfixes (rate limiting):
3040 - Servers decline directory requests much more aggressively when
3041 they're low on bandwidth. Otherwise they end up queueing more and
3042 more directory responses, which can't be good for latency.
3043 - But never refuse directory requests from local addresses.
3044 - Fix a memory leak when sending a 503 response for a networkstatus
3046 - Be willing to read or write on local connections (e.g. controller
3047 connections) even when the global rate limiting buckets are empty.
3048 - If our system clock jumps back in time, don't publish a negative
3049 uptime in the descriptor. Also, don't let the global rate limiting
3050 buckets go absurdly negative.
3051 - Flush local controller connection buffers periodically as we're
3052 writing to them, so we avoid queueing 4+ megabytes of data before
3055 o Major bugfixes (NT services):
3056 - Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
3057 command-line flag so that admins can override the default by saying
3058 "tor --service install --user "SomeUser"". This will not affect
3059 existing installed services. Also, warn the user that the service
3060 will look for its configuration file in the service user's
3061 %appdata% directory. (We can't do the 'hardwire the user's appdata
3062 directory' trick any more, since we may not have read access to that
3065 o Major bugfixes (other):
3066 - Previously, we would cache up to 16 old networkstatus documents
3067 indefinitely, if they came from nontrusted authorities. Now we
3068 discard them if they are more than 10 days old.
3069 - Fix a crash bug in the presence of DNS hijacking (reported by Andrew
3071 - Detect and reject malformed DNS responses containing circular
3073 - If exits are rare enough that we're not marking exits as guards,
3074 ignore exit bandwidth when we're deciding the required bandwidth
3076 - When we're handling a directory connection tunneled over Tor,
3077 don't fill up internal memory buffers with all the data we want
3078 to tunnel; instead, only add it if the OR connection that will
3079 eventually receive it has some room for it. (This can lead to
3080 slowdowns in tunneled dir connections; a better solution will have
3083 o Minor bugfixes (dns):
3084 - Add some defensive programming to eventdns.c in an attempt to catch
3085 possible memory-stomping bugs.
3086 - Detect and reject DNS replies containing IPv4 or IPv6 records with
3087 an incorrect number of bytes. (Previously, we would ignore the
3089 - Fix as-yet-unused reverse IPv6 lookup code so it sends nybbles
3090 in the correct order, and doesn't crash.
3091 - Free memory held in recently-completed DNS lookup attempts on exit.
3092 This was not a memory leak, but may have been hiding memory leaks.
3093 - Handle TTL values correctly on reverse DNS lookups.
3094 - Treat failure to parse resolv.conf as an error.
3096 o Minor bugfixes (other):
3097 - Fix crash with "tor --list-fingerprint" (reported by seeess).
3098 - When computing clock skew from directory HTTP headers, consider what
3099 time it was when we finished asking for the directory, not what
3101 - Expire socks connections if they spend too long waiting for the
3102 handshake to finish. Previously we would let them sit around for
3103 days, if the connecting application didn't close them either.
3104 - And if the socks handshake hasn't started, don't send a
3105 "DNS resolve socks failed" handshake reply; just close it.
3106 - Stop using C functions that OpenBSD's linker doesn't like.
3107 - Don't launch requests for descriptors unless we have networkstatuses
3108 from at least half of the authorities. This delays the first
3109 download slightly under pathological circumstances, but can prevent
3110 us from downloading a bunch of descriptors we don't need.
3111 - Do not log IPs with TLS failures for incoming TLS
3112 connections. (Fixes bug 382.)
3113 - If the user asks to use invalid exit nodes, be willing to use
3115 - Stop using the reserved ac_cv namespace in our configure script.
3116 - Call stat() slightly less often; use fstat() when possible.
3117 - Refactor the way we handle pending circuits when an OR connection
3118 completes or fails, in an attempt to fix a rare crash bug.
3119 - Only rewrite a conn's address based on X-Forwarded-For: headers
3120 if it's a parseable public IP address; and stop adding extra quotes
3121 to the resulting address.
3124 - Weight directory requests by advertised bandwidth. Now we can
3125 let servers enable write limiting but still allow most clients to
3126 succeed at their directory requests. (We still ignore weights when
3127 choosing a directory authority; I hope this is a feature.)
3130 - Create a new file ReleaseNotes which was the old ChangeLog. The
3131 new ChangeLog file now includes the summaries for all development
3133 - Check for addresses with invalid characters at the exit as well
3134 as at the client, and warn less verbosely when they fail. You can
3135 override this by setting ServerDNSAllowNonRFC953Addresses to 1.
3136 - Adapt a patch from goodell to let the contrib/exitlist script
3137 take arguments rather than require direct editing.
3138 - Inform the server operator when we decide not to advertise a
3139 DirPort due to AccountingMax enabled or a low BandwidthRate. It
3140 was confusing Zax, so now we're hopefully more helpful.
3141 - Bring us one step closer to being able to establish an encrypted
3142 directory tunnel without knowing a descriptor first. Still not
3143 ready yet. As part of the change, now assume we can use a
3144 create_fast cell if we don't know anything about a router.
3145 - Allow exit nodes to use nameservers running on ports other than 53.
3146 - Servers now cache reverse DNS replies.
3147 - Add an --ignore-missing-torrc command-line option so that we can
3148 get the "use sensible defaults if the configuration file doesn't
3149 exist" behavior even when specifying a torrc location on the command
3152 o Minor features (controller):
3153 - Track reasons for OR connection failure; make these reasons
3154 available via the controller interface. (Patch from Mike Perry.)
3155 - Add a SOCKS_BAD_HOSTNAME client status event so controllers
3156 can learn when clients are sending malformed hostnames to Tor.
3157 - Clean up documentation for controller status events.
3158 - Add a REMAP status to stream events to note that a stream's
3159 address has changed because of a cached address or a MapAddress
3163 Changes in version 0.1.2.6-alpha - 2007-01-09
3165 - Fix an assert error introduced in 0.1.2.5-alpha: if a single TLS
3166 connection handles more than 4 gigs in either direction, we crash.
3167 - Fix an assert error introduced in 0.1.2.5-alpha: if we're an
3168 advertised exit node, somebody might try to exit from us when
3169 we're bootstrapping and before we've built our descriptor yet.
3170 Refuse the connection rather than crashing.
3173 - Warn if we (as a server) find that we've resolved an address that we
3174 weren't planning to resolve.
3175 - Warn that using select() on any libevent version before 1.1 will be
3176 unnecessarily slow (even for select()).
3177 - Flush ERR-level controller status events just like we currently
3178 flush ERR-level log events, so that a Tor shutdown doesn't prevent
3179 the controller from learning about current events.
3181 o Minor features (more controller status events):
3182 - Implement EXTERNAL_ADDRESS server status event so controllers can
3183 learn when our address changes.
3184 - Implement BAD_SERVER_DESCRIPTOR server status event so controllers
3185 can learn when directories reject our descriptor.
3186 - Implement SOCKS_UNKNOWN_PROTOCOL client status event so controllers
3187 can learn when a client application is speaking a non-socks protocol
3189 - Implement DANGEROUS_SOCKS client status event so controllers
3190 can learn when a client application is leaking DNS addresses.
3191 - Implement BUG general status event so controllers can learn when
3192 Tor is unhappy about its internal invariants.
3193 - Implement CLOCK_SKEW general status event so controllers can learn
3194 when Tor thinks the system clock is set incorrectly.
3195 - Implement GOOD_SERVER_DESCRIPTOR and ACCEPTED_SERVER_DESCRIPTOR
3196 server status events so controllers can learn when their descriptors
3197 are accepted by a directory.
3198 - Implement CHECKING_REACHABILITY and REACHABILITY_{SUCCEEDED|FAILED}
3199 server status events so controllers can learn about Tor's progress in
3200 deciding whether it's reachable from the outside.
3201 - Implement BAD_LIBEVENT general status event so controllers can learn
3202 when we have a version/method combination in libevent that needs to
3204 - Implement NAMESERVER_STATUS, NAMESERVER_ALL_DOWN, DNS_HIJACKED,
3205 and DNS_USELESS server status events so controllers can learn
3206 about changes to DNS server status.
3208 o Minor features (directory):
3209 - Authorities no longer recommend exits as guards if this would shift
3210 too much load to the exit nodes.
3213 Changes in version 0.1.2.5-alpha - 2007-01-06
3215 - Enable write limiting as well as read limiting. Now we sacrifice
3216 capacity if we're pushing out lots of directory traffic, rather
3217 than overrunning the user's intended bandwidth limits.
3218 - Include TLS overhead when counting bandwidth usage; previously, we
3219 would count only the bytes sent over TLS, but not the bytes used
3221 - Support running the Tor service with a torrc not in the same
3222 directory as tor.exe and default to using the torrc located in
3223 the %appdata%\Tor\ of the user who installed the service. Patch
3225 - Servers now check for the case when common DNS requests are going to
3226 wildcarded addresses (i.e. all getting the same answer), and change
3227 their exit policy to reject *:* if it's happening.
3228 - Implement BEGIN_DIR cells, so we can connect to the directory
3229 server via TLS to do encrypted directory requests rather than
3230 plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
3231 config options if you like.
3233 o Minor features (config and docs):
3234 - Start using the state file to store bandwidth accounting data:
3235 the bw_accounting file is now obsolete. We'll keep generating it
3236 for a while for people who are still using 0.1.2.4-alpha.
3237 - Try to batch changes to the state file so that we do as few
3238 disk writes as possible while still storing important things in
3240 - The state file and the bw_accounting file get saved less often when
3241 the AvoidDiskWrites config option is set.
3242 - Make PIDFile work on Windows (untested).
3243 - Add internal descriptions for a bunch of configuration options:
3244 accessible via controller interface and in comments in saved
3246 - Reject *:563 (NNTPS) in the default exit policy. We already reject
3247 NNTP by default, so this seems like a sensible addition.
3248 - Clients now reject hostnames with invalid characters. This should
3249 avoid some inadvertent info leaks. Add an option
3250 AllowNonRFC953Hostnames to disable this behavior, in case somebody
3251 is running a private network with hosts called @, !, and #.
3252 - Add a maintainer script to tell us which options are missing
3253 documentation: "make check-docs".
3254 - Add a new address-spec.txt document to describe our special-case
3255 addresses: .exit, .onion, and .noconnnect.
3257 o Minor features (DNS):
3258 - Ongoing work on eventdns infrastructure: now it has dns server
3259 and ipv6 support. One day Tor will make use of it.
3260 - Add client-side caching for reverse DNS lookups.
3261 - Add support to tor-resolve tool for reverse lookups and SOCKS5.
3262 - When we change nameservers or IP addresses, reset and re-launch
3263 our tests for DNS hijacking.
3265 o Minor features (directory):
3266 - Authorities now specify server versions in networkstatus. This adds
3267 about 2% to the size of compressed networkstatus docs, and allows
3268 clients to tell which servers support BEGIN_DIR and which don't.
3269 The implementation is forward-compatible with a proposed future
3270 protocol version scheme not tied to Tor versions.
3271 - DirServer configuration lines now have an orport= option so
3272 clients can open encrypted tunnels to the authorities without
3273 having downloaded their descriptors yet. Enabled for moria1,
3274 moria2, tor26, and lefkada now in the default configuration.
3275 - Directory servers are more willing to send a 503 "busy" if they
3276 are near their write limit, especially for v1 directory requests.
3277 Now they can use their limited bandwidth for actual Tor traffic.
3278 - Clients track responses with status 503 from dirservers. After a
3279 dirserver has given us a 503, we try not to use it until an hour has
3280 gone by, or until we have no dirservers that haven't given us a 503.
3281 - When we get a 503 from a directory, and we're not a server, we don't
3282 count the failure against the total number of failures allowed
3283 for the thing we're trying to download.
3284 - Report X-Your-Address-Is correctly from tunneled directory
3285 connections; don't report X-Your-Address-Is when it's an internal
3286 address; and never believe reported remote addresses when they're
3288 - Protect against an unlikely DoS attack on directory servers.
3289 - Add a BadDirectory flag to network status docs so that authorities
3290 can (eventually) tell clients about caches they believe to be
3293 o Minor features (controller):
3294 - Have GETINFO dir/status/* work on hosts with DirPort disabled.
3295 - Reimplement GETINFO so that info/names stays in sync with the
3297 - Implement "GETINFO fingerprint".
3298 - Implement "SETEVENTS GUARD" so controllers can get updates on
3299 entry guard status as it changes.
3301 o Minor features (clean up obsolete pieces):
3302 - Remove some options that have been deprecated since at least
3303 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
3304 SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
3306 - We no longer look for identity and onion keys in "identity.key" and
3307 "onion.key" -- these were replaced by secret_id_key and
3308 secret_onion_key in 0.0.8pre1.
3309 - We no longer require unrecognized directory entries to be
3312 o Major bugfixes (security):
3313 - Stop sending the HttpProxyAuthenticator string to directory
3314 servers when directory connections are tunnelled through Tor.
3315 - Clients no longer store bandwidth history in the state file.
3316 - Do not log introduction points for hidden services if SafeLogging
3318 - When generating bandwidth history, round down to the nearest
3319 1k. When storing accounting data, round up to the nearest 1k.
3320 - When we're running as a server, remember when we last rotated onion
3321 keys, so that we will rotate keys once they're a week old even if
3322 we never stay up for a week ourselves.
3324 o Major bugfixes (other):
3325 - Fix a longstanding bug in eventdns that prevented the count of
3326 timed-out resolves from ever being reset. This bug caused us to
3327 give up on a nameserver the third time it timed out, and try it
3328 10 seconds later... and to give up on it every time it timed out
3330 - Take out the '5 second' timeout from the connection retry
3331 schedule. Now the first connect attempt will wait a full 10
3332 seconds before switching to a new circuit. Perhaps this will help
3333 a lot. Based on observations from Mike Perry.
3334 - Fix a bug on the Windows implementation of tor_mmap_file() that
3335 would prevent the cached-routers file from ever loading. Reported
3339 - Fix an assert failure when a directory authority sets
3340 AuthDirRejectUnlisted and then receives a descriptor from an
3341 unlisted router. Reported by seeess.
3342 - Avoid a double-free when parsing malformed DirServer lines.
3343 - Fix a bug when a BSD-style PF socket is first used. Patch from
3345 - Fix a bug in 0.1.2.2-alpha that prevented clients from asking
3346 to resolve an address at a given exit node even when they ask for
3348 - Servers no longer ever list themselves in their "family" line,
3349 even if configured to do so. This makes it easier to configure
3350 family lists conveniently.
3351 - When running as a server, don't fall back to 127.0.0.1 when no
3352 nameservers are configured in /etc/resolv.conf; instead, make the
3353 user fix resolv.conf or specify nameservers explicitly. (Resolves
3355 - Stop accepting certain malformed ports in configured exit policies.
3356 - Don't re-write the fingerprint file every restart, unless it has
3358 - Stop warning when a single nameserver fails: only warn when _all_ of
3359 our nameservers have failed. Also, when we only have one nameserver,
3360 raise the threshold for deciding that the nameserver is dead.
3361 - Directory authorities now only decide that routers are reachable
3362 if their identity keys are as expected.
3363 - When the user uses bad syntax in the Log config line, stop
3364 suggesting other bad syntax as a replacement.
3365 - Correctly detect ipv6 DNS capability on OpenBSD.
3367 o Minor bugfixes (controller):
3368 - Report the circuit number correctly in STREAM CLOSED events. Bug
3369 reported by Mike Perry.
3370 - Do not report bizarre values for results of accounting GETINFOs
3371 when the last second's write or read exceeds the allotted bandwidth.
3372 - Report "unrecognized key" rather than an empty string when the
3373 controller tries to fetch a networkstatus that doesn't exist.
3376 Changes in version 0.1.1.26 - 2006-12-14
3377 o Security bugfixes:
3378 - Stop sending the HttpProxyAuthenticator string to directory
3379 servers when directory connections are tunnelled through Tor.
3380 - Clients no longer store bandwidth history in the state file.
3381 - Do not log introduction points for hidden services if SafeLogging
3385 - Fix an assert failure when a directory authority sets
3386 AuthDirRejectUnlisted and then receives a descriptor from an
3387 unlisted router (reported by seeess).
3390 Changes in version 0.1.2.4-alpha - 2006-12-03
3392 - Add support for using natd; this allows FreeBSDs earlier than
3393 5.1.2 to have ipfw send connections through Tor without using
3394 SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
3397 - Make all connections to addresses of the form ".noconnect"
3398 immediately get closed. This lets application/controller combos
3399 successfully test whether they're talking to the same Tor by
3400 watching for STREAM events.
3401 - Make cross.sh cross-compilation script work even when autogen.sh
3402 hasn't been run. (Patch from Michael Mohr.)
3403 - Statistics dumped by -USR2 now include a breakdown of public key
3404 operations, for profiling.
3407 - Fix a major leak when directory authorities parse their
3408 approved-routers list, a minor memory leak when we fail to pick
3409 an exit node, and a few rare leaks on errors.
3410 - Handle TransPort connections even when the server sends data before
3411 the client sends data. Previously, the connection would just hang
3412 until the client sent data. (Patch from tup based on patch from
3414 - Avoid assert failure when our cached-routers file is empty on
3418 - Don't log spurious warnings when we see a circuit close reason we
3419 don't recognize; it's probably just from a newer version of Tor.
3420 - Have directory authorities allow larger amounts of drift in uptime
3421 without replacing the server descriptor: previously, a server that
3422 restarted every 30 minutes could have 48 "interesting" descriptors
3424 - Start linking to the Tor specification and Tor reference manual
3425 correctly in the Windows installer.
3426 - Add Vidalia to the OS X uninstaller script, so when we uninstall
3427 Tor/Privoxy we also uninstall Vidalia.
3428 - Resume building on Irix64, and fix a lot of warnings from its
3430 - Don't corrupt last_guessed_ip in router_new_address_suggestion()
3431 when we're running as a client.
3434 Changes in version 0.1.1.25 - 2006-11-04
3436 - When a client asks us to resolve (rather than connect to)
3437 an address, and we have a cached answer, give them the cached
3438 answer. Previously, we would give them no answer at all.
3439 - We were building exactly the wrong circuits when we predict
3440 hidden service requirements, meaning Tor would have to build all
3441 its circuits on demand.
3442 - If none of our live entry guards have a high uptime, but we
3443 require a guard with a high uptime, try adding a new guard before
3444 we give up on the requirement. This patch should make long-lived
3445 connections more stable on average.
3446 - When testing reachability of our DirPort, don't launch new
3447 tests when there's already one in progress -- unreachable
3448 servers were stacking up dozens of testing streams.
3450 o Security bugfixes:
3451 - When the user sends a NEWNYM signal, clear the client-side DNS
3452 cache too. Otherwise we continue to act on previous information.
3455 - Avoid a memory corruption bug when creating a hash table for
3457 - Avoid possibility of controller-triggered crash when misusing
3458 certain commands from a v0 controller on platforms that do not
3459 handle printf("%s",NULL) gracefully.
3460 - Avoid infinite loop on unexpected controller input.
3461 - Don't log spurious warnings when we see a circuit close reason we
3462 don't recognize; it's probably just from a newer version of Tor.
3463 - Add Vidalia to the OS X uninstaller script, so when we uninstall
3464 Tor/Privoxy we also uninstall Vidalia.
3467 Changes in version 0.1.2.3-alpha - 2006-10-29
3469 - Prepare for servers to publish descriptors less often: never
3470 discard a descriptor simply for being too old until either it is
3471 recommended by no authorities, or until we get a better one for
3472 the same router. Make caches consider retaining old recommended
3473 routers for even longer.
3474 - If most authorities set a BadExit flag for a server, clients
3475 don't think of it as a general-purpose exit. Clients only consider
3476 authorities that advertise themselves as listing bad exits.
3477 - Directory servers now provide 'Pragma: no-cache' and 'Expires'
3478 headers for content, so that we can work better in the presence of
3479 caching HTTP proxies.
3480 - Allow authorities to list nodes as bad exits by fingerprint or by
3483 o Minor features, controller:
3484 - Add a REASON field to CIRC events; for backward compatibility, this
3485 field is sent only to controllers that have enabled the extended
3486 event format. Also, add additional reason codes to explain why
3487 a given circuit has been destroyed or truncated. (Patches from
3489 - Add a REMOTE_REASON field to extended CIRC events to tell the
3490 controller about why a remote OR told us to close a circuit.
3491 - Stream events also now have REASON and REMOTE_REASON fields,
3492 working much like those for circuit events.
3493 - There's now a GETINFO ns/... field so that controllers can ask Tor
3494 about the current status of a router.
3495 - A new event type "NS" to inform a controller when our opinion of
3496 a router's status has changed.
3497 - Add a GETINFO events/names and GETINFO features/names so controllers
3498 can tell which events and features are supported.
3499 - A new CLEARDNSCACHE signal to allow controllers to clear the
3500 client-side DNS cache without expiring circuits.
3502 o Security bugfixes:
3503 - When the user sends a NEWNYM signal, clear the client-side DNS
3504 cache too. Otherwise we continue to act on previous information.
3507 - Avoid sending junk to controllers or segfaulting when a controller
3508 uses EVENT_NEW_DESC with verbose nicknames.
3509 - Stop triggering asserts if the controller tries to extend hidden
3510 service circuits (reported by mwenge).
3511 - Avoid infinite loop on unexpected controller input.
3512 - When the controller does a "GETINFO network-status", tell it
3513 about even those routers whose descriptors are very old, and use
3514 long nicknames where appropriate.
3515 - Change NT service functions to be loaded on demand. This lets us
3516 build with MinGW without breaking Tor for Windows 98 users.
3517 - Do DirPort reachability tests less often, since a single test
3518 chews through many circuits before giving up.
3519 - In the hidden service example in torrc.sample, stop recommending
3520 esoteric and discouraged hidden service options.
3521 - When stopping an NT service, wait up to 10 sec for it to actually
3522 stop. (Patch from Matt Edman; resolves bug 295.)
3523 - Fix handling of verbose nicknames with ORCONN controller events:
3524 make them show up exactly when requested, rather than exactly when
3526 - When reporting verbose nicknames in entry_guards_getinfo(), avoid
3527 printing a duplicate "$" in the keys we send (reported by mwenge).
3528 - Correctly set maximum connection limit on Cygwin. (This time
3530 - Try to detect Windows correctly when cross-compiling.
3531 - Detect the size of the routers file correctly even if it is
3532 corrupted (on systems without mmap) or not page-aligned (on systems
3533 with mmap). This bug was harmless.
3534 - Sometimes we didn't bother sending a RELAY_END cell when an attempt
3535 to open a stream fails; now we do in more cases. This should
3536 make clients able to find a good exit faster in some cases, since
3537 unhandleable requests will now get an error rather than timing out.
3538 - Resolve two memory leaks when rebuilding the on-disk router cache
3539 (reported by fookoowa).
3540 - Clean up minor code warnings suggested by the MIPSpro C compiler,
3541 and reported by some Centos users.
3542 - Controller signals now work on non-Unix platforms that don't define
3543 SIGUSR1 and SIGUSR2 the way we expect.
3544 - Patch from Michael Mohr to contrib/cross.sh, so it checks more
3545 values before failing, and always enables eventdns.
3546 - Libevent-1.2 exports, but does not define in its headers, strlcpy.
3547 Try to fix this in configure.in by checking for most functions
3548 before we check for libevent.
3551 Changes in version 0.1.2.2-alpha - 2006-10-07
3553 - Make our async eventdns library on-by-default for Tor servers,
3554 and plan to deprecate the separate dnsworker threads.
3555 - Add server-side support for "reverse" DNS lookups (using PTR
3556 records so clients can determine the canonical hostname for a given
3557 IPv4 address). Only supported by servers using eventdns; servers
3558 now announce in their descriptors whether they support eventdns.
3559 - Specify and implement client-side SOCKS5 interface for reverse DNS
3560 lookups (see doc/socks-extensions.txt).
3561 - Add a BEGIN_DIR relay cell type for an easier in-protocol way to
3562 connect to directory servers through Tor. Previously, clients needed
3563 to find Tor exits to make private connections to directory servers.
3564 - Avoid choosing Exit nodes for entry or middle hops when the
3565 total bandwidth available from non-Exit nodes is much higher than
3566 the total bandwidth available from Exit nodes.
3567 - Workaround for name servers (like Earthlink's) that hijack failing
3568 DNS requests and replace the no-such-server answer with a "helpful"
3569 redirect to an advertising-driven search portal. Also work around
3570 DNS hijackers who "helpfully" decline to hijack known-invalid
3571 RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
3572 lets you turn it off.
3573 - Send out a burst of long-range padding cells once we've established
3574 that we're reachable. Spread them over 4 circuits, so hopefully
3575 a few will be fast. This exercises our bandwidth and bootstraps
3576 us into the directory more quickly.
3578 o New/improved config options:
3579 - Add new config option "ResolvConf" to let the server operator
3580 choose an alternate resolve.conf file when using eventdns.
3581 - Add an "EnforceDistinctSubnets" option to control our "exclude
3582 servers on the same /16" behavior. It's still on by default; this
3583 is mostly for people who want to operate private test networks with
3584 all the machines on the same subnet.
3585 - If one of our entry guards is on the ExcludeNodes list, or the
3586 directory authorities don't think it's a good guard, treat it as
3587 if it were unlisted: stop using it as a guard, and throw it off
3588 the guards list if it stays that way for a long time.
3589 - Allow directory authorities to be marked separately as authorities
3590 for the v1 directory protocol, the v2 directory protocol, and
3591 as hidden service directories, to make it easier to retire old
3592 authorities. V1 authorities should set "HSAuthoritativeDir 1"
3593 to continue being hidden service authorities too.
3594 - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
3596 o Minor features, controller:
3597 - Fix CIRC controller events so that controllers can learn the
3598 identity digests of non-Named servers used in circuit paths.
3599 - Let controllers ask for more useful identifiers for servers. Instead
3600 of learning identity digests for un-Named servers and nicknames
3601 for Named servers, the new identifiers include digest, nickname,
3602 and indication of Named status. Off by default; see control-spec.txt
3603 for more information.
3604 - Add a "getinfo address" controller command so it can display Tor's
3605 best guess to the user.
3606 - New controller event to alert the controller when our server
3607 descriptor has changed.
3608 - Give more meaningful errors on controller authentication failure.
3610 o Minor features, other:
3611 - When asked to resolve a hostname, don't use non-exit servers unless
3612 requested to do so. This allows servers with broken DNS to be
3613 useful to the network.
3614 - Divide eventdns log messages into warn and info messages.
3615 - Reserve the nickname "Unnamed" for routers that can't pick
3616 a hostname: any router can call itself Unnamed; directory
3617 authorities will never allocate Unnamed to any particular router;
3618 clients won't believe that any router is the canonical Unnamed.
3619 - Only include function names in log messages for info/debug messages.
3620 For notice/warn/err, the content of the message should be clear on
3621 its own, and printing the function name only confuses users.
3622 - Avoid some false positives during reachability testing: don't try
3623 to test via a server that's on the same /24 as us.
3624 - If we fail to build a circuit to an intended enclave, and it's
3625 not mandatory that we use that enclave, stop wanting it.
3626 - When eventdns is enabled, allow multithreaded builds on NetBSD and
3627 OpenBSD. (We had previously disabled threads on these platforms
3628 because they didn't have working thread-safe resolver functions.)
3630 o Major bugfixes, anonymity/security:
3631 - If a client asked for a server by name, and there's a named server
3632 in our network-status but we don't have its descriptor yet, we
3633 could return an unnamed server instead.
3634 - Fix NetBSD bug that could allow someone to force uninitialized RAM
3635 to be sent to a server's DNS resolver. This only affects NetBSD
3636 and other platforms that do not bounds-check tolower().
3637 - Reject (most) attempts to use Tor circuits with length one. (If
3638 many people start using Tor as a one-hop proxy, exit nodes become
3639 a more attractive target for compromise.)
3640 - Just because your DirPort is open doesn't mean people should be
3641 able to remotely teach you about hidden service descriptors. Now
3642 only accept rendezvous posts if you've got HSAuthoritativeDir set.
3644 o Major bugfixes, other:
3645 - Don't crash on race condition in dns.c: tor_assert(!resolve->expire)
3646 - When a client asks the server to resolve (not connect to)
3647 an address, and it has a cached answer, give them the cached answer.
3648 Previously, the server would give them no answer at all.
3649 - Allow really slow clients to not hang up five minutes into their
3650 directory downloads (suggested by Adam J. Richter).
3651 - We were building exactly the wrong circuits when we anticipated
3652 hidden service requirements, meaning Tor would have to build all
3653 its circuits on demand.
3654 - Avoid crashing when we mmap a router cache file of size 0.
3655 - When testing reachability of our DirPort, don't launch new
3656 tests when there's already one in progress -- unreachable
3657 servers were stacking up dozens of testing streams.
3659 o Minor bugfixes, correctness:
3660 - If we're a directory mirror and we ask for "all" network status
3661 documents, we would discard status documents from authorities
3663 - Avoid a memory corruption bug when creating a hash table for
3665 - Avoid controller-triggered crash when misusing certain commands
3666 from a v0 controller on platforms that do not handle
3667 printf("%s",NULL) gracefully.
3668 - Don't crash when a controller sends a third argument to an
3669 "extendcircuit" request.
3670 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
3671 response; fix error code when "getinfo dir/status/" fails.
3672 - Avoid crash when telling controller stream-status and a stream
3674 - Patch from Adam Langley to fix assert() in eventdns.c.
3675 - Fix a debug log message in eventdns to say "X resolved to Y"
3676 instead of "X resolved to X".
3677 - Make eventdns give strings for DNS errors, not just error numbers.
3678 - Track unreachable entry guards correctly: don't conflate
3679 'unreachable by us right now' with 'listed as down by the directory
3680 authorities'. With the old code, if a guard was unreachable by
3681 us but listed as running, it would clog our guard list forever.
3682 - Behave correctly in case we ever have a network with more than
3683 2GB/s total advertised capacity.
3684 - Make TrackExitHosts case-insensitive, and fix the behavior of
3685 ".suffix" TrackExitHosts items to avoid matching in the middle of
3687 - Finally fix the openssl warnings from newer gccs that believe that
3688 ignoring a return value is okay, but casting a return value and
3689 then ignoring it is a sign of madness.
3690 - Prevent the contrib/exitlist script from printing the same
3691 result more than once.
3692 - Patch from Steve Hildrey: Generate network status correctly on
3693 non-versioning dirservers.
3694 - Don't listen to the X-Your-Address-Is hint if you did the lookup
3695 via Tor; otherwise you'll think you're the exit node's IP address.
3697 o Minor bugfixes, performance:
3698 - Two small performance improvements on parsing descriptors.
3699 - Major performance improvement on inserting descriptors: change
3700 algorithm from O(n^2) to O(n).
3701 - Make the common memory allocation path faster on machines where
3702 malloc(0) returns a pointer.
3703 - Start remembering X-Your-Address-Is directory hints even if you're
3704 a client, so you can become a server more smoothly.
3705 - Avoid duplicate entries on MyFamily line in server descriptor.
3707 o Packaging, features:
3708 - Remove architecture from OS X builds. The official builds are
3709 now universal binaries.
3710 - The Debian package now uses --verify-config when (re)starting,
3711 to distinguish configuration errors from other errors.
3712 - Update RPMs to require libevent 1.1b.
3714 o Packaging, bugfixes:
3715 - Patches so Tor builds with MinGW on Windows.
3716 - Patches so Tor might run on Cygwin again.
3717 - Resume building on non-gcc compilers and ancient gcc. Resume
3718 building with the -O0 compile flag. Resume building cleanly on
3720 - Run correctly on OS X platforms with case-sensitive filesystems.
3721 - Correct includes for net/if.h and net/pfvar.h on OpenBSD (from Tup).
3722 - Add autoconf checks so Tor can build on Solaris x86 again.
3725 - Documented (and renamed) ServerDNSSearchDomains and
3726 ServerDNSResolvConfFile options.
3727 - Be clearer that the *ListenAddress directives can be repeated
3731 Changes in version 0.1.1.24 - 2006-09-29
3733 - Allow really slow clients to not hang up five minutes into their
3734 directory downloads (suggested by Adam J. Richter).
3735 - Fix major performance regression from 0.1.0.x: instead of checking
3736 whether we have enough directory information every time we want to
3737 do something, only check when the directory information has changed.
3738 This should improve client CPU usage by 25-50%.
3739 - Don't crash if, after a server has been running for a while,
3740 it can't resolve its hostname.
3743 - Allow Tor to start when RunAsDaemon is set but no logs are set.
3744 - Don't crash when the controller receives a third argument to an
3745 "extendcircuit" request.
3746 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
3747 response; fix error code when "getinfo dir/status/" fails.
3748 - Fix configure.in to not produce broken configure files with
3749 more recent versions of autoconf. Thanks to Clint for his auto*
3751 - Fix security bug on NetBSD that could allow someone to force
3752 uninitialized RAM to be sent to a server's DNS resolver. This
3753 only affects NetBSD and other platforms that do not bounds-check
3755 - Warn user when using libevent 1.1a or earlier with win32 or kqueue
3756 methods: these are known to be buggy.
3757 - If we're a directory mirror and we ask for "all" network status
3758 documents, we would discard status documents from authorities
3762 Changes in version 0.1.2.1-alpha - 2006-08-27
3764 - Add "eventdns" async dns library from Adam Langley, tweaked to
3765 build on OSX and Windows. Only enabled if you pass the
3766 --enable-eventdns argument to configure.
3767 - Allow servers with no hostname or IP address to learn their
3768 IP address by asking the directory authorities. This code only
3769 kicks in when you would normally have exited with a "no address"
3770 error. Nothing's authenticated, so use with care.
3771 - Rather than waiting a fixed amount of time between retrying
3772 application connections, we wait only 5 seconds for the first,
3773 10 seconds for the second, and 15 seconds for each retry after
3774 that. Hopefully this will improve the expected user experience.
3775 - Patch from Tup to add support for transparent AP connections:
3776 this basically bundles the functionality of trans-proxy-tor
3777 into the Tor mainline. Now hosts with compliant pf/netfilter
3778 implementations can redirect TCP connections straight to Tor
3779 without diverting through SOCKS. Needs docs.
3780 - Busy directory servers save lots of memory by spooling server
3781 descriptors, v1 directories, and v2 networkstatus docs to buffers
3782 as needed rather than en masse. Also mmap the cached-routers
3783 files, so we don't need to keep the whole thing in memory too.
3784 - Automatically avoid picking more than one node from the same
3785 /16 network when constructing a circuit.
3786 - Revise and clean up the torrc.sample that we ship with; add
3787 a section for BandwidthRate and BandwidthBurst.
3790 - Split circuit_t into origin_circuit_t and or_circuit_t, and
3791 split connection_t into edge, or, dir, control, and base structs.
3792 These will save quite a bit of memory on busy servers, and they'll
3793 also help us track down bugs in the code and bugs in the spec.
3794 - Experimentally re-enable kqueue on OSX when using libevent 1.1b
3795 or later. Log when we are doing this, so we can diagnose it when
3796 it fails. (Also, recommend libevent 1.1b for kqueue and
3797 win32 methods; deprecate libevent 1.0b harder; make libevent
3798 recommendation system saner.)
3799 - Start being able to build universal binaries on OS X (thanks
3801 - Export the default exit policy via the control port, so controllers
3802 don't need to guess what it is / will be later.
3803 - Add a man page entry for ProtocolWarnings.
3804 - Add TestVia config option to the man page.
3805 - Remove even more protocol-related warnings from Tor server logs,
3806 such as bad TLS handshakes and malformed begin cells.
3807 - Stop fetching descriptors if you're not a dir mirror and you
3808 haven't tried to establish any circuits lately. [This currently
3809 causes some dangerous behavior, because when you start up again
3810 you'll use your ancient server descriptors.]
3811 - New DirPort behavior: if you have your dirport set, you download
3812 descriptors aggressively like a directory mirror, whether or not
3814 - Get rid of the router_retry_connections notion. Now routers
3815 no longer try to rebuild long-term connections to directory
3816 authorities, and directory authorities no longer try to rebuild
3817 long-term connections to all servers. We still don't hang up
3818 connections in these two cases though -- we need to look at it
3819 more carefully to avoid flapping, and we likely need to wait til
3820 0.1.1.x is obsolete.
3821 - Drop compatibility with obsolete Tors that permit create cells
3822 to have the wrong circ_id_type.
3823 - Re-enable per-connection rate limiting. Get rid of the "OP
3824 bandwidth" concept. Lay groundwork for "bandwidth classes" --
3825 separate global buckets that apply depending on what sort of conn
3827 - Start publishing one minute or so after we find our ORPort
3828 to be reachable. This will help reduce the number of descriptors
3829 we have for ourselves floating around, since it's quite likely
3830 other things (e.g. DirPort) will change during that minute too.
3831 - Fork the v1 directory protocol into its own spec document,
3832 and mark dir-spec.txt as the currently correct (v2) spec.
3835 - When we find our DirPort to be reachable, publish a new descriptor
3836 so we'll tell the world (reported by pnx).
3837 - Publish a new descriptor after we hup/reload. This is important
3838 if our config has changed such that we'll want to start advertising
3839 our DirPort now, etc.
3840 - Allow Tor to start when RunAsDaemon is set but no logs are set.
3841 - When we have a state file we cannot parse, tell the user and
3842 move it aside. Now we avoid situations where the user starts
3843 Tor in 1904, Tor writes a state file with that timestamp in it,
3844 the user fixes her clock, and Tor refuses to start.
3845 - Fix configure.in to not produce broken configure files with
3846 more recent versions of autoconf. Thanks to Clint for his auto*
3848 - "tor --verify-config" now exits with -1(255) or 0 depending on
3849 whether the config options are bad or good.
3850 - Resolve bug 321 when using dnsworkers: append a period to every
3851 address we resolve at the exit node, so that we do not accidentally
3852 pick up local addresses, and so that failing searches are retried
3853 in the resolver search domains. (This is already solved for
3854 eventdns.) (This breaks Blossom servers for now.)
3855 - If we are using an exit enclave and we can't connect, e.g. because
3856 its webserver is misconfigured to not listen on localhost, then
3857 back off and try connecting from somewhere else before we fail.
3860 - Start compiling on MinGW on Windows (patches from Mike Chiussi).
3861 - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
3862 - Fix bug 314: Tor clients issued "unsafe socks" warnings even
3863 when the IP address is mapped through MapAddress to a hostname.
3864 - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
3865 useless IPv6 DNS resolves.
3866 - Patch suggested by Karsten Loesing: respond to SIGNAL command
3867 before we execute the signal, in case the signal shuts us down.
3868 - Clean up AllowInvalidNodes man page entry.
3869 - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
3870 - Add more asserts to track down an assert error on a windows Tor
3871 server with connection_add being called with socket == -1.
3872 - Handle reporting OR_CONN_EVENT_NEW events to the controller.
3873 - Fix misleading log messages: an entry guard that is "unlisted",
3874 as well as not known to be "down" (because we've never heard
3875 of it), is not therefore "up".
3876 - Remove code to special-case "-cvs" ending, since it has not
3877 actually mattered since 0.0.9.
3878 - Make our socks5 handling more robust to broken socks clients:
3879 throw out everything waiting on the buffer in between socks
3880 handshake phases, since they can't possibly (so the theory
3881 goes) have predicted what we plan to respond to them.
3884 Changes in version 0.1.1.23 - 2006-07-30
3886 - Fast Tor servers, especially exit nodes, were triggering asserts
3887 due to a bug in handling the list of pending DNS resolves. Some
3888 bugs still remain here; we're hunting them.
3889 - Entry guards could crash clients by sending unexpected input.
3890 - More fixes on reachability testing: if you find yourself reachable,
3891 then don't ever make any client requests (so you stop predicting
3892 circuits), then hup or have your clock jump, then later your IP
3893 changes, you won't think circuits are working, so you won't try to
3894 test reachability, so you won't publish.
3897 - Avoid a crash if the controller does a resetconf firewallports
3898 and then a setconf fascistfirewall=1.
3899 - Avoid an integer underflow when the dir authority decides whether
3900 a router is stable: we might wrongly label it stable, and compute
3901 a slightly wrong median stability, when a descriptor is published
3903 - Fix a place where we might trigger an assert if we can't build our
3904 own server descriptor yet.
3907 Changes in version 0.1.1.22 - 2006-07-05
3909 - Fix a big bug that was causing servers to not find themselves
3910 reachable if they changed IP addresses. Since only 0.1.1.22+
3911 servers can do reachability testing correctly, now we automatically
3912 make sure to test via one of these.
3913 - Fix to allow clients and mirrors to learn directory info from
3914 descriptor downloads that get cut off partway through.
3915 - Directory authorities had a bug in deciding if a newly published
3916 descriptor was novel enough to make everybody want a copy -- a few
3917 servers seem to be publishing new descriptors many times a minute.
3919 - Fix a rare bug that was causing some servers to complain about
3920 "closing wedged cpuworkers" and skip some circuit create requests.
3921 - Make the Exit flag in directory status documents actually work.
3924 Changes in version 0.1.1.21 - 2006-06-10
3925 o Crash and assert fixes from 0.1.1.20:
3926 - Fix a rare crash on Tor servers that have enabled hibernation.
3927 - Fix a seg fault on startup for Tor networks that use only one
3928 directory authority.
3929 - Fix an assert from a race condition that occurs on Tor servers
3930 while exiting, where various threads are trying to log that they're
3931 exiting, and delete the logs, at the same time.
3932 - Make our unit tests pass again on certain obscure platforms.
3935 - Add support for building SUSE RPM packages.
3936 - Speed up initial bootstrapping for clients: if we are making our
3937 first ever connection to any entry guard, then don't mark it down
3939 - When only one Tor server in the network is labelled as a guard,
3940 and we've already picked him, we would cycle endlessly picking him
3941 again, being unhappy about it, etc. Now we specifically exclude
3942 current guards when picking a new guard.
3943 - Servers send create cells more reliably after the TLS connection
3944 is established: we were sometimes forgetting to send half of them
3945 when we had more than one pending.
3946 - If we get a create cell that asks us to extend somewhere, but the
3947 Tor server there doesn't match the expected digest, we now send
3948 a destroy cell back, rather than silently doing nothing.
3949 - Make options->RedirectExit work again.
3950 - Make cookie authentication for the controller work again.
3951 - Stop being picky about unusual characters in the arguments to
3952 mapaddress. It's none of our business.
3953 - Add a new config option "TestVia" that lets you specify preferred
3954 middle hops to use for test circuits. Perhaps this will let me
3955 debug the reachability problems better.
3957 o Log / documentation fixes:
3958 - If we're a server and some peer has a broken TLS certificate, don't
3959 log about it unless ProtocolWarnings is set, i.e., we want to hear
3960 about protocol violations by others.
3961 - Fix spelling of VirtualAddrNetwork in man page.
3962 - Add a better explanation at the top of the autogenerated torrc file
3963 about what happened to our old torrc.
3966 Changes in version 0.1.1.20 - 2006-05-23
3968 - Downgrade a log severity where servers complain that they're
3970 - Avoid a compile warning on FreeBSD.
3971 - Remove string size limit on NEWDESC messages; solve bug 291.
3972 - Correct the RunAsDaemon entry in the man page; ignore RunAsDaemon
3973 more thoroughly when we're running on windows.
3976 Changes in version 0.1.1.19-rc - 2006-05-03
3978 - Regenerate our local descriptor if it's dirty and we try to use
3979 it locally (e.g. if it changes during reachability detection).
3980 - If we setconf our ORPort to 0, we continued to listen on the
3981 old ORPort and receive connections.
3982 - Avoid a second warning about machine/limits.h on Debian
3984 - Be willing to add our own routerinfo into the routerlist.
3985 Now authorities will include themselves in their directories
3986 and network-statuses.
3987 - Stop trying to upload rendezvous descriptors to every
3988 directory authority: only try the v1 authorities.
3989 - Servers no longer complain when they think they're not
3990 registered with the directory authorities. There were too many
3992 - Backport dist-rpm changes so rpms can be built without errors.
3995 - Implement an option, VirtualAddrMask, to set which addresses
3996 get handed out in response to mapaddress requests. This works
3997 around a bug in tsocks where 127.0.0.0/8 is never socksified.
4000 Changes in version 0.1.1.18-rc - 2006-04-10
4002 - Work harder to download live network-statuses from all the
4003 directory authorities we know about. Improve the threshold
4004 decision logic so we're more robust to edge cases.
4005 - When fetching rendezvous descriptors, we were willing to ask
4006 v2 authorities too, which would always return 404.
4009 - Stop listing down or invalid nodes in the v1 directory. This will
4010 reduce its bulk by about 1/3, and reduce load on directory
4012 - When deciding whether a router is Fast or Guard-worthy, consider
4013 his advertised BandwidthRate and not just the BandwidthCapacity.
4014 - No longer ship INSTALL and README files -- they are useless now.
4015 - Force rpmbuild to behave and honor target_cpu.
4016 - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
4017 - Start to include translated versions of the tor-doc-*.html
4018 files, along with the screenshots. Still needs more work.
4019 - Start sending back 512 and 451 errors if mapaddress fails,
4020 rather than not sending anything back at all.
4021 - When we fail to bind or listen on an incoming or outgoing
4022 socket, we should close it before failing. otherwise we just
4023 leak it. (thanks to weasel for finding.)
4024 - Allow "getinfo dir/status/foo" to work, as long as your DirPort
4025 is enabled. (This is a hack, and will be fixed in 0.1.2.x.)
4026 - Make NoPublish (even though deprecated) work again.
4027 - Fix a minor security flaw where a versioning auth dirserver
4028 could list a recommended version many times in a row to make
4029 clients more convinced that it's recommended.
4030 - Fix crash bug if there are two unregistered servers running
4031 with the same nickname, one of them is down, and you ask for
4032 them by nickname in your EntryNodes or ExitNodes. Also, try
4033 to pick the one that's running rather than an arbitrary one.
4034 - Fix an infinite loop we could hit if we go offline for too long.
4035 - Complain when we hit WSAENOBUFS on recv() or write() too.
4036 Perhaps this will help us hunt the bug.
4037 - If you're not a versioning dirserver, don't put the string
4038 "client-versions \nserver-versions \n" in your network-status.
4039 - Lower the minimum required number of file descriptors to 1000,
4040 so we can have some overhead for Valgrind on Linux, where the
4041 default ulimit -n is 1024.
4044 - Add tor.dizum.com as the fifth authoritative directory server.
4045 - Add a new config option FetchUselessDescriptors, off by default,
4046 for when you plan to run "exitlist" on your client and you want
4047 to know about even the non-running descriptors.
4050 Changes in version 0.1.1.17-rc - 2006-03-28
4052 - Clients and servers since 0.1.1.10-alpha have been expiring
4053 connections whenever they are idle for 5 minutes and they *do*
4054 have circuits on them. Oops. With this new version, clients will
4055 discard their previous entry guard choices and avoid choosing
4056 entry guards running these flawed versions.
4057 - Fix memory leak when uncompressing concatenated zlib streams. This
4058 was causing substantial leaks over time on Tor servers.
4059 - The v1 directory was including servers as much as 48 hours old,
4060 because that's how the new routerlist->routers works. Now only
4061 include them if they're 20 hours old or less.
4064 - Resume building on irix64, netbsd 2.0, etc.
4065 - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
4067 - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
4068 and it is confusing some users.
4069 - Mirrors stop caching the v1 directory so often.
4070 - Make the max number of old descriptors that a cache will hold
4071 rise with the number of directory authorities, so we can scale.
4072 - Change our win32 uname() hack to be more forgiving about what
4073 win32 versions it thinks it's found.
4076 - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
4078 - When the controller's *setconf commands fail, collect an error
4079 message in a string and hand it back to the controller.
4080 - Make the v2 dir's "Fast" flag based on relative capacity, just
4081 like "Stable" is based on median uptime. Name everything in the
4082 top 7/8 Fast, and only the top 1/2 gets to be a Guard.
4083 - Log server fingerprint on startup, so new server operators don't
4084 have to go hunting around their filesystem for it.
4085 - Return a robots.txt on our dirport to discourage google indexing.
4086 - Let the controller ask for GETINFO dir/status/foo so it can ask
4087 directly rather than connecting to the dir port. Only works when
4088 dirport is set for now.
4090 o New config options rather than constants in the code:
4091 - SocksTimeout: How long do we let a socks connection wait
4092 unattached before we fail it?
4093 - CircuitBuildTimeout: Cull non-open circuits that were born
4094 at least this many seconds ago.
4095 - CircuitIdleTimeout: Cull open clean circuits that were born
4096 at least this many seconds ago.
4099 Changes in version 0.1.1.16-rc - 2006-03-18
4100 o Bugfixes on 0.1.1.15-rc:
4101 - Fix assert when the controller asks to attachstream a connect-wait
4102 or resolve-wait stream.
4103 - Now do address rewriting when the controller asks us to attach
4104 to a particular circuit too. This will let Blossom specify
4105 "moria2.exit" without having to learn what moria2's IP address is.
4106 - Make the "tor --verify-config" command-line work again, so people
4107 can automatically check if their torrc will parse.
4108 - Authoritative dirservers no longer require an open connection from
4109 a server to consider him "reachable". We need this change because
4110 when we add new auth dirservers, old servers won't know not to
4112 - Let Tor build on Sun CC again.
4113 - Fix an off-by-one buffer size in dirserv.c that magically never
4114 hit our three authorities but broke sjmurdoch's own tor network.
4115 - If we as a directory mirror don't know of any v1 directory
4116 authorities, then don't try to cache any v1 directories.
4117 - Stop warning about unknown servers in our family when they are
4118 given as hex digests.
4119 - Stop complaining as quickly to the server operator that he
4120 hasn't registered his nickname/key binding.
4121 - Various cleanups so we can add new V2 Auth Dirservers.
4122 - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
4123 reflect the updated flags in our v2 dir protocol.
4124 - Resume allowing non-printable characters for exit streams (both
4125 for connecting and for resolving). Now we tolerate applications
4126 that don't follow the RFCs. But continue to block malformed names
4129 o Bugfixes on 0.1.0.x:
4130 - Fix assert bug in close_logs(): when we close and delete logs,
4131 remove them all from the global "logfiles" list.
4132 - Fix minor integer overflow in calculating when we expect to use up
4133 our bandwidth allocation before hibernating.
4134 - Fix a couple of bugs in OpenSSL detection. Also, deal better when
4135 there are multiple SSLs installed with different versions.
4136 - When we try to be a server and Address is not explicitly set and
4137 our hostname resolves to a private IP address, try to use an
4138 interface address if it has a public address. Now Windows machines
4139 that think of themselves as localhost can work by default.
4142 - Let the controller ask for GETINFO dir/server/foo so it can ask
4143 directly rather than connecting to the dir port.
4144 - Let the controller tell us about certain router descriptors
4145 that it doesn't want Tor to use in circuits. Implement
4146 SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
4147 - New config option SafeSocks to reject all application connections
4148 using unsafe socks protocols. Defaults to off.
4151 Changes in version 0.1.1.15-rc - 2006-03-11
4152 o Bugfixes and cleanups:
4153 - When we're printing strings from the network, don't try to print
4154 non-printable characters. This protects us against shell escape
4155 sequence exploits, and also against attacks to fool humans into
4156 misreading their logs.
4157 - Fix a bug where Tor would fail to establish any connections if you
4158 left it off for 24 hours and then started it: we were happy with
4159 the obsolete network statuses, but they all referred to router
4160 descriptors that were too old to fetch, so we ended up with no
4161 valid router descriptors.
4162 - Fix a seg fault in the controller's "getinfo orconn-status"
4163 command while listing status on incoming handshaking connections.
4164 Introduce a status name "NEW" for these connections.
4165 - If we get a linelist or linelist_s config option from the torrc
4166 (e.g. ExitPolicy) and it has no value, warn and skip rather than
4167 silently resetting it to its default.
4168 - Don't abandon entry guards until they've been down or gone for
4170 - Cleaner and quieter log messages.
4173 - New controller signal NEWNYM that makes new application requests
4175 - Add a new circuit purpose 'controller' to let the controller ask
4176 for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
4177 controller command to let you specify the purpose if you're
4178 starting a new circuit. Add a new SETCIRCUITPURPOSE controller
4179 command to let you change a circuit's purpose after it's been
4181 - Accept "private:*" in routerdesc exit policies; not generated yet
4182 because older Tors do not understand it.
4183 - Add BSD-style contributed startup script "rc.subr" from Peter
4187 Changes in version 0.1.1.14-alpha - 2006-02-20
4188 o Bugfixes on 0.1.1.x:
4189 - Don't die if we ask for a stdout or stderr log (even implicitly)
4190 and we're set to RunAsDaemon -- just warn.
4191 - We still had a few bugs in the OR connection rotation code that
4192 caused directory servers to slowly aggregate connections to other
4193 fast Tor servers. This time for sure!
4194 - Make log entries on Win32 include the name of the function again.
4195 - We were treating a pair of exit policies if they were equal even
4196 if one said accept and the other said reject -- causing us to
4197 not always publish a new descriptor since we thought nothing
4199 - Retry pending server downloads as well as pending networkstatus
4200 downloads when we unexpectedly get a socks request.
4201 - We were ignoring the IS_FAST flag in the directory status,
4202 meaning we were willing to pick trivial-bandwidth nodes for "fast"
4204 - If the controller's SAVECONF command fails (e.g. due to file
4205 permissions), let the controller know that it failed.
4208 - If we're trying to be a Tor server and running Windows 95/98/ME
4209 as a server, explain that we'll likely crash.
4210 - When we're a server, a client asks for an old-style directory,
4211 and our write bucket is empty, don't give it to him. This way
4212 small servers can continue to serve the directory *sometimes*,
4213 without getting overloaded.
4214 - Compress exit policies even more -- look for duplicate lines
4216 - Clients now honor the "guard" flag in the router status when
4217 picking entry guards, rather than looking at is_fast or is_stable.
4218 - Retain unrecognized lines in $DATADIR/state file, so that we can
4219 be forward-compatible.
4220 - Generate 18.0.0.0/8 address policy format in descs when we can;
4221 warn when the mask is not reducible to a bit-prefix.
4222 - Let the user set ControlListenAddress in the torrc. This can be
4223 dangerous, but there are some cases (like a secured LAN) where it
4225 - Split ReachableAddresses into ReachableDirAddresses and
4226 ReachableORAddresses, so we can restrict Dir conns to port 80
4227 and OR conns to port 443.
4228 - Now we can target arch and OS in rpm builds (contributed by
4229 Phobos). Also make the resulting dist-rpm filename match the
4231 - New config options to help controllers: FetchServerDescriptors
4232 and FetchHidServDescriptors for whether to fetch server
4233 info and hidserv info or let the controller do it, and
4234 PublishServerDescriptor and PublishHidServDescriptors.
4235 - Also let the controller set the __AllDirActionsPrivate config
4236 option if you want all directory fetches/publishes to happen via
4237 Tor (it assumes your controller bootstraps your circuits).
4240 Changes in version 0.1.0.17 - 2006-02-17
4241 o Crash bugfixes on 0.1.0.x:
4242 - When servers with a non-zero DirPort came out of hibernation,
4243 sometimes they would trigger an assert.
4245 o Other important bugfixes:
4246 - On platforms that don't have getrlimit (like Windows), we were
4247 artificially constraining ourselves to a max of 1024
4248 connections. Now just assume that we can handle as many as 15000
4249 connections. Hopefully this won't cause other problems.
4251 o Backported features:
4252 - When we're a server, a client asks for an old-style directory,
4253 and our write bucket is empty, don't give it to him. This way
4254 small servers can continue to serve the directory *sometimes*,
4255 without getting overloaded.
4256 - Whenever you get a 503 in response to a directory fetch, try
4257 once more. This will become important once servers start sending
4258 503's whenever they feel busy.
4259 - Fetch a new directory every 120 minutes, not every 40 minutes.
4260 Now that we have hundreds of thousands of users running the old
4261 directory algorithm, it's starting to hurt a lot.
4262 - Bump up the period for forcing a hidden service descriptor upload
4263 from 20 minutes to 1 hour.
4266 Changes in version 0.1.1.13-alpha - 2006-02-09
4267 o Crashes in 0.1.1.x:
4268 - When you tried to setconf ORPort via the controller, Tor would
4269 crash. So people using TorCP to become a server were sad.
4270 - Solve (I hope) the stack-smashing bug that we were seeing on fast
4271 servers. The problem appears to be something do with OpenSSL's
4272 random number generation, or how we call it, or something. Let me
4273 know if the crashes continue.
4274 - Turn crypto hardware acceleration off by default, until we find
4275 somebody smart who can test it for us. (It appears to produce
4276 seg faults in at least some cases.)
4277 - Fix a rare assert error when we've tried all intro points for
4278 a hidden service and we try fetching the service descriptor again:
4279 "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
4282 - Fix a major load balance bug: we were round-robining in 16 KB
4283 chunks, and servers with bandwidthrate of 20 KB, while downloading
4284 a 600 KB directory, would starve their other connections. Now we
4285 try to be a bit more fair.
4286 - Dir authorities and mirrors were never expiring the newest
4287 descriptor for each server, causing memory and directory bloat.
4288 - Fix memory-bloating and connection-bloating bug on servers: We
4289 were never closing any connection that had ever had a circuit on
4290 it, because we were checking conn->n_circuits == 0, yet we had a
4291 bug that let it go negative.
4292 - Make Tor work using squid as your http proxy again -- squid
4293 returns an error if you ask for a URL that's too long, and it uses
4294 a really generic error message. Plus, many people are behind a
4295 transparent squid so they don't even realize it.
4296 - On platforms that don't have getrlimit (like Windows), we were
4297 artificially constraining ourselves to a max of 1024
4298 connections. Now just assume that we can handle as many as 15000
4299 connections. Hopefully this won't cause other problems.
4300 - Add a new config option ExitPolicyRejectPrivate which defaults to
4301 1. This means all exit policies will begin with rejecting private
4302 addresses, unless the server operator explicitly turns it off.
4305 - Clients no longer download descriptors for non-running
4307 - Before we add new directory authorities, we should make it
4308 clear that only v1 authorities should receive/publish hidden
4309 service descriptors.
4312 - As soon as we've fetched some more directory info, immediately
4313 try to download more server descriptors. This way we don't have
4314 a 10 second pause during initial bootstrapping.
4315 - Remove even more loud log messages that the server operator can't
4317 - When we're running an obsolete or un-recommended version, make
4318 the log message more clear about what the problem is and what
4319 versions *are* still recommended.
4320 - Provide a more useful warn message when our onion queue gets full:
4321 the CPU is too slow or the exit policy is too liberal.
4322 - Don't warn when we receive a 503 from a dirserver/cache -- this
4323 will pave the way for them being able to refuse if they're busy.
4324 - When we fail to bind a listener, try to provide a more useful
4325 log message: e.g., "Is Tor already running?"
4326 - Adjust tor-spec to parameterize cell and key lengths. Now Ian
4327 Goldberg can prove things about our handshake protocol more
4329 - MaxConn has been obsolete for a while now. Document the ConnLimit
4330 config option, which is a *minimum* number of file descriptors
4331 that must be available else Tor refuses to start.
4332 - Apply Matt Ghali's --with-syslog-facility patch to ./configure
4333 if you log to syslog and want something other than LOG_DAEMON.
4334 - Make dirservers generate a separate "guard" flag to mean,
4335 "would make a good entry guard". Make clients parse it and vote
4336 on it. Not used by clients yet.
4337 - Implement --with-libevent-dir option to ./configure. Also, improve
4338 search techniques to find libevent, and use those for openssl too.
4339 - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
4340 - Only start testing reachability once we've established a
4341 circuit. This will make startup on dirservers less noisy.
4342 - Don't try to upload hidden service descriptors until we have
4343 established a circuit.
4344 - Fix the controller's "attachstream 0" command to treat conn like
4345 it just connected, doing address remapping, handling .exit and
4346 .onion idioms, and so on. Now we're more uniform in making sure
4347 that the controller hears about new and closing connections.
4350 Changes in version 0.1.1.12-alpha - 2006-01-11
4351 o Bugfixes on 0.1.1.x:
4352 - The fix to close duplicate server connections was closing all
4353 Tor client connections if they didn't establish a circuit
4354 quickly enough. Oops.
4355 - Fix minor memory issue (double-free) that happened on exit.
4357 o Bugfixes on 0.1.0.x:
4358 - Tor didn't warn when it failed to open a log file.
4361 Changes in version 0.1.1.11-alpha - 2006-01-10
4362 o Crashes in 0.1.1.x:
4363 - Include all the assert/crash fixes from 0.1.0.16.
4364 - If you start Tor and then quit very quickly, there were some
4365 races that tried to free things that weren't allocated yet.
4366 - Fix a rare memory stomp if you're running hidden services.
4367 - Fix segfault when specifying DirServer in config without nickname.
4368 - Fix a seg fault when you finish connecting to a server but at
4369 that moment you dump his server descriptor.
4370 - Extendcircuit and Attachstream controller commands would
4371 assert/crash if you don't give them enough arguments.
4372 - Fix an assert error when we're out of space in the connection_list
4373 and we try to post a hidden service descriptor (reported by weasel).
4374 - If you specify a relative torrc path and you set RunAsDaemon in
4375 your torrc, then it chdir()'s to the new directory. If you HUP,
4376 it tries to load the new torrc location, fails, and exits.
4377 The fix: no longer allow a relative path to torrc using -f.
4380 - Implement "entry guards": automatically choose a handful of entry
4381 nodes and stick with them for all circuits. Only pick new guards
4382 when the ones you have are unsuitable, and if the old guards
4383 become suitable again, switch back. This will increase security
4384 dramatically against certain end-point attacks. The EntryNodes
4385 config option now provides some hints about which entry guards you
4386 want to use most; and StrictEntryNodes means to only use those.
4387 - New directory logic: download by descriptor digest, not by
4388 fingerprint. Caches try to download all listed digests from
4389 authorities; clients try to download "best" digests from caches.
4390 This avoids partitioning and isolating attacks better.
4391 - Make the "stable" router flag in network-status be the median of
4392 the uptimes of running valid servers, and make clients pay
4393 attention to the network-status flags. Thus the cutoff adapts
4394 to the stability of the network as a whole, making IRC, IM, etc
4395 connections more reliable.
4398 - Tor servers with dynamic IP addresses were needing to wait 18
4399 hours before they could start doing reachability testing using
4400 the new IP address and ports. This is because they were using
4401 the internal descriptor to learn what to test, yet they were only
4402 rebuilding the descriptor once they decided they were reachable.
4403 - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
4404 to download certain server descriptors, throw them away, and then
4405 fetch them again after 30 minutes. Now mirrors throw away these
4406 server descriptors so clients can't get them.
4407 - We were leaving duplicate connections to other ORs open for a week,
4408 rather than closing them once we detect a duplicate. This only
4409 really affected authdirservers, but it affected them a lot.
4410 - Spread the authdirservers' reachability testing over the entire
4411 testing interval, so we don't try to do 500 TLS's at once every
4415 - If the network is down, and we try to connect to a conn because
4416 we have a circuit in mind, and we timeout (30 seconds) because the
4417 network never answers, we were expiring the circuit, but we weren't
4418 obsoleting the connection or telling the entry_guards functions.
4419 - Some Tor servers process billions of cells per day. These statistics
4420 need to be uint64_t's.
4421 - Check for integer overflows in more places, when adding elements
4422 to smartlists. This could possibly prevent a buffer overflow
4423 on malicious huge inputs. I don't see any, but I haven't looked
4425 - ReachableAddresses kept growing new "reject *:*" lines on every
4427 - When you "setconf log" via the controller, it should remove all
4428 logs. We were automatically adding back in a "log notice stdout".
4429 - Newly bootstrapped Tor networks couldn't establish hidden service
4430 circuits until they had nodes with high uptime. Be more tolerant.
4431 - We were marking servers down when they could not answer every piece
4432 of the directory request we sent them. This was far too harsh.
4433 - Fix the torify (tsocks) config file to not use Tor for localhost
4435 - Directory authorities now go to the proper authority when asking for
4436 a networkstatus, even when they want a compressed one.
4437 - Fix a harmless bug that was causing Tor servers to log
4438 "Got an end because of misc error, but we're not an AP. Closing."
4439 - Authorities were treating their own descriptor changes as cosmetic,
4440 meaning the descriptor available in the network-status and the
4441 descriptor that clients downloaded were different.
4442 - The OS X installer was adding a symlink for tor_resolve but
4443 the binary was called tor-resolve (reported by Thomas Hardly).
4444 - Workaround a problem with some http proxies where they refuse GET
4445 requests that specify "Content-Length: 0" (reported by Adrian).
4446 - Fix wrong log message when you add a "HiddenServiceNodes" config
4447 line without any HiddenServiceDir line (reported by Chris Thomas).
4450 - Write the TorVersion into the state file so we have a prayer of
4451 keeping forward and backward compatibility.
4452 - Revive the FascistFirewall config option rather than eliminating it:
4453 now it's a synonym for ReachableAddresses *:80,*:443.
4454 - Clients choose directory servers from the network status lists,
4455 not from their internal list of router descriptors. Now they can
4456 go to caches directly rather than needing to go to authorities
4458 - Directory authorities ignore router descriptors that have only
4459 cosmetic differences: do this for 0.1.0.x servers now too.
4460 - Add a new flag to network-status indicating whether the server
4461 can answer v2 directory requests too.
4462 - Authdirs now stop whining so loudly about bad descriptors that
4463 they fetch from other dirservers. So when there's a log complaint,
4464 it's for sure from a freshly uploaded descriptor.
4465 - Reduce memory requirements in our structs by changing the order
4467 - There used to be two ways to specify your listening ports in a
4468 server descriptor: on the "router" line and with a separate "ports"
4469 line. Remove support for the "ports" line.
4470 - New config option "AuthDirRejectUnlisted" for auth dirservers as
4471 a panic button: if we get flooded with unusable servers we can
4472 revert to only listing servers in the approved-routers file.
4473 - Auth dir servers can now mark a fingerprint as "!reject" or
4474 "!invalid" in the approved-routers file (as its nickname), to
4475 refuse descriptors outright or include them but marked as invalid.
4476 - Servers store bandwidth history across restarts/crashes.
4477 - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
4478 get a better idea of why their circuits failed. Not used yet.
4479 - Directory mirrors now cache up to 16 unrecognized network-status
4480 docs. Now we can add new authdirservers and they'll be cached too.
4481 - When picking a random directory, prefer non-authorities if any
4483 - New controller option "getinfo desc/all-recent" to fetch the
4484 latest server descriptor for every router that Tor knows about.
4487 Changes in version 0.1.0.16 - 2006-01-02
4488 o Crash bugfixes on 0.1.0.x:
4489 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
4490 corrupting the heap, losing FDs, or crashing when we need to resize
4491 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
4492 - It turns out sparc64 platforms crash on unaligned memory access
4493 too -- so detect and avoid this.
4494 - Handle truncated compressed data correctly (by detecting it and
4496 - Fix possible-but-unlikely free(NULL) in control.c.
4497 - When we were closing connections, there was a rare case that
4498 stomped on memory, triggering seg faults and asserts.
4499 - Avoid potential infinite recursion when building a descriptor. (We
4500 don't know that it ever happened, but better to fix it anyway.)
4501 - We were neglecting to unlink marked circuits from soon-to-close OR
4502 connections, which caused some rare scribbling on freed memory.
4503 - Fix a memory stomping race bug when closing the joining point of two
4504 rendezvous circuits.
4505 - Fix an assert in time parsing found by Steven Murdoch.
4507 o Other bugfixes on 0.1.0.x:
4508 - When we're doing reachability testing, provide more useful log
4509 messages so the operator knows what to expect.
4510 - Do not check whether DirPort is reachable when we are suppressing
4511 advertising it because of hibernation.
4512 - When building with -static or on Solaris, we sometimes needed -ldl.
4513 - When we're deciding whether a stream has enough circuits around
4514 that can handle it, count the freshly dirty ones and not the ones
4515 that are so dirty they won't be able to handle it.
4516 - When we're expiring old circuits, we had a logic error that caused
4517 us to close new rendezvous circuits rather than old ones.
4518 - Give a more helpful log message when you try to change ORPort via
4519 the controller: you should upgrade Tor if you want that to work.
4520 - We were failing to parse Tor versions that start with "Tor ".
4521 - Tolerate faulty streams better: when a stream fails for reason
4522 exitpolicy, stop assuming that the router is lying about his exit
4523 policy. When a stream fails for reason misc, allow it to retry just
4524 as if it was resolvefailed. When a stream has failed three times,
4525 reset its failure count so we can try again and get all three tries.
4528 Changes in version 0.1.1.10-alpha - 2005-12-11
4529 o Correctness bugfixes on 0.1.0.x:
4530 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
4531 corrupting the heap, losing FDs, or crashing when we need to resize
4532 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
4533 - Stop doing the complex voodoo overkill checking for insecure
4534 Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
4535 - When we were closing connections, there was a rare case that
4536 stomped on memory, triggering seg faults and asserts.
4537 - We were neglecting to unlink marked circuits from soon-to-close OR
4538 connections, which caused some rare scribbling on freed memory.
4539 - When we're deciding whether a stream has enough circuits around
4540 that can handle it, count the freshly dirty ones and not the ones
4541 that are so dirty they won't be able to handle it.
4542 - Recover better from TCP connections to Tor servers that are
4543 broken but don't tell you (it happens!); and rotate TLS
4544 connections once a week.
4545 - When we're expiring old circuits, we had a logic error that caused
4546 us to close new rendezvous circuits rather than old ones.
4547 - Fix a scary-looking but apparently harmless bug where circuits
4548 would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
4549 servers, and never switch to state CIRCUIT_STATE_OPEN.
4550 - When building with -static or on Solaris, we sometimes needed to
4552 - Give a useful message when people run Tor as the wrong user,
4553 rather than telling them to start chowning random directories.
4554 - We were failing to inform the controller about new .onion streams.
4556 o Security bugfixes on 0.1.0.x:
4557 - Refuse server descriptors if the fingerprint line doesn't match
4558 the included identity key. Tor doesn't care, but other apps (and
4559 humans) might actually be trusting the fingerprint line.
4560 - We used to kill the circuit when we receive a relay command we
4561 don't recognize. Now we just drop it.
4562 - Start obeying our firewall options more rigorously:
4563 . If we can't get to a dirserver directly, try going via Tor.
4564 . Don't ever try to connect (as a client) to a place our
4565 firewall options forbid.
4566 . If we specify a proxy and also firewall options, obey the
4567 firewall options even when we're using the proxy: some proxies
4568 can only proxy to certain destinations.
4569 - Fix a bug found by Lasse Overlier: when we were making internal
4570 circuits (intended to be cannibalized later for rendezvous and
4571 introduction circuits), we were picking them so that they had
4572 useful exit nodes. There was no need for this, and it actually
4573 aids some statistical attacks.
4574 - Start treating internal circuits and exit circuits separately.
4575 It's important to keep them separate because internal circuits
4576 have their last hops picked like middle hops, rather than like
4577 exit hops. So exiting on them will break the user's expectations.
4579 o Bugfixes on 0.1.1.x:
4580 - Take out the mis-feature where we tried to detect IP address
4581 flapping for people with DynDNS, and chose not to upload a new
4582 server descriptor sometimes.
4583 - Try to be compatible with OpenSSL 0.9.6 again.
4584 - Log fix: when the controller is logging about .onion addresses,
4585 sometimes it didn't include the ".onion" part of the address.
4586 - Don't try to modify options->DirServers internally -- if the
4587 user didn't specify any, just add the default ones directly to
4588 the trusted dirserver list. This fixes a bug where people running
4589 controllers would use SETCONF on some totally unrelated config
4590 option, and Tor would start yelling at them about changing their
4592 - Let the controller's redirectstream command specify a port, in
4593 case the controller wants to change that too.
4594 - When we requested a pile of server descriptors, we sometimes
4595 accidentally launched a duplicate request for the first one.
4596 - Bugfix for trackhostexits: write down the fingerprint of the
4597 chosen exit, not its nickname, because the chosen exit might not
4599 - When parsing foo.exit, if foo is unknown, and we are leaving
4600 circuits unattached, set the chosen_exit field and leave the
4601 address empty. This matters because controllers got confused
4603 - Directory authorities no longer try to download server
4604 descriptors that they know they will reject.
4606 o Features and updates:
4607 - Replace balanced trees with hash tables: this should make stuff
4608 significantly faster.
4609 - Resume using the AES counter-mode implementation that we ship,
4610 rather than OpenSSL's. Ours is significantly faster.
4611 - Many other CPU and memory improvements.
4612 - Add a new config option FastFirstHopPK (on by default) so clients
4613 do a trivial crypto handshake for their first hop, since TLS has
4614 already taken care of confidentiality and authentication.
4615 - Add a new config option TestSocks so people can see if their
4616 applications are using socks4, socks4a, socks5-with-ip, or
4617 socks5-with-hostname. This way they don't have to keep mucking
4618 with tcpdump and wondering if something got cached somewhere.
4619 - Warn when listening on a public address for socks. I suspect a
4620 lot of people are setting themselves up as open socks proxies,
4621 and they have no idea that jerks on the Internet are using them,
4622 since they simply proxy the traffic into the Tor network.
4623 - Add "private:*" as an alias in configuration for policies. Now
4624 you can simplify your exit policy rather than needing to list
4625 every single internal or nonroutable network space.
4626 - Add a new controller event type that allows controllers to get
4627 all server descriptors that were uploaded to a router in its role
4628 as authoritative dirserver.
4629 - Start shipping socks-extensions.txt, tor-doc-unix.html,
4630 tor-doc-server.html, and stylesheet.css in the tarball.
4631 - Stop shipping tor-doc.html in the tarball.
4634 Changes in version 0.1.1.9-alpha - 2005-11-15
4635 o Usability improvements:
4636 - Start calling it FooListenAddress rather than FooBindAddress,
4637 since few of our users know what it means to bind an address
4639 - Reduce clutter in server logs. We're going to try to make
4640 them actually usable now. New config option ProtocolWarnings that
4641 lets you hear about how _other Tors_ are breaking the protocol. Off
4643 - Divide log messages into logging domains. Once we put some sort
4644 of interface on this, it will let people looking at more verbose
4645 log levels specify the topics they want to hear more about.
4646 - Make directory servers return better http 404 error messages
4647 instead of a generic "Servers unavailable".
4648 - Check for even more Windows version flags when writing the platform
4649 string in server descriptors, and note any we don't recognize.
4650 - Clean up more of the OpenSSL memory when exiting, so we can detect
4651 memory leaks better.
4652 - Make directory authorities be non-versioning, non-naming by
4653 default. Now we can add new directory servers without requiring
4654 their operators to pay close attention.
4655 - When logging via syslog, include the pid whenever we provide
4656 a log entry. Suggested by Todd Fries.
4658 o Performance improvements:
4659 - Directory servers now silently throw away new descriptors that
4660 haven't changed much if the timestamps are similar. We do this to
4661 tolerate older Tor servers that upload a new descriptor every 15
4662 minutes. (It seemed like a good idea at the time.)
4663 - Inline bottleneck smartlist functions; use fast versions by default.
4664 - Add a "Map from digest to void*" abstraction digestmap_t so we
4665 can do less hex encoding/decoding. Use it in router_get_by_digest()
4666 to resolve a performance bottleneck.
4667 - Allow tor_gzip_uncompress to extract as much as possible from
4668 truncated compressed data. Try to extract as many
4669 descriptors as possible from truncated http responses (when
4670 DIR_PURPOSE_FETCH_ROUTERDESC).
4671 - Make circ->onionskin a pointer, not a static array. moria2 was using
4672 125000 circuit_t's after it had been up for a few weeks, which
4673 translates to 20+ megs of wasted space.
4674 - The private half of our EDH handshake keys are now chosen out
4675 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
4677 o Security improvements:
4678 - Start making directory caches retain old routerinfos, so soon
4679 clients can start asking by digest of descriptor rather than by
4680 fingerprint of server.
4681 - Add half our entropy from RAND_poll in OpenSSL. This knows how
4682 to use egd (if present), openbsd weirdness (if present), vms/os2
4683 weirdness (if we ever port there), and more in the future.
4685 o Bugfixes on 0.1.0.x:
4686 - Do round-robin writes of at most 16 kB per write. This might be
4687 more fair on loaded Tor servers, and it might resolve our Windows
4688 crash bug. It might also slow things down.
4689 - Our TLS handshakes were generating a single public/private
4690 keypair for the TLS context, rather than making a new one for
4691 each new connections. Oops. (But we were still rotating them
4692 periodically, so it's not so bad.)
4693 - When we were cannibalizing a circuit with a particular exit
4694 node in mind, we weren't checking to see if that exit node was
4695 already present earlier in the circuit. Oops.
4696 - When a Tor server's IP changes (e.g. from a dyndns address),
4697 upload a new descriptor so clients will learn too.
4698 - Really busy servers were keeping enough circuits open on stable
4699 connections that they were wrapping around the circuit_id
4700 space. (It's only two bytes.) This exposed a bug where we would
4701 feel free to reuse a circuit_id even if it still exists but has
4702 been marked for close. Try to fix this bug. Some bug remains.
4703 - If we would close a stream early (e.g. it asks for a .exit that
4704 we know would refuse it) but the LeaveStreamsUnattached config
4705 option is set by the controller, then don't close it.
4707 o Bugfixes on 0.1.1.8-alpha:
4708 - Fix a big pile of memory leaks, some of them serious.
4709 - Do not try to download a routerdesc if we would immediately reject
4711 - Resume inserting a newline between all router descriptors when
4712 generating (old style) signed directories, since our spec says
4714 - When providing content-type application/octet-stream for
4715 server descriptors using .z, we were leaving out the
4716 content-encoding header. Oops. (Everything tolerated this just
4717 fine, but that doesn't mean we need to be part of the problem.)
4718 - Fix a potential seg fault in getconf and getinfo using version 1
4719 of the controller protocol.
4720 - Avoid crash: do not check whether DirPort is reachable when we
4721 are suppressing it because of hibernation.
4722 - Make --hash-password not crash on exit.
4725 Changes in version 0.1.1.8-alpha - 2005-10-07
4726 o New features (major):
4727 - Clients don't download or use the directory anymore. Now they
4728 download and use network-statuses from the trusted dirservers,
4729 and fetch individual server descriptors as needed from mirrors.
4730 See dir-spec.txt for all the gory details.
4731 - Be more conservative about whether to advertise our DirPort.
4732 The main change is to not advertise if we're running at capacity
4733 and either a) we could hibernate or b) our capacity is low and
4734 we're using a default DirPort.
4735 - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
4737 o New features (minor):
4738 - Try to be smart about when to retry network-status and
4739 server-descriptor fetches. Still needs some tuning.
4740 - Stop parsing, storing, or using running-routers output (but
4741 mirrors still cache and serve it).
4742 - Consider a threshold of versioning dirservers (dirservers who have
4743 an opinion about which Tor versions are still recommended) before
4744 deciding whether to warn the user that he's obsolete.
4745 - Dirservers can now reject/invalidate by key and IP, with the
4746 config options "AuthDirInvalid" and "AuthDirReject". This is
4747 useful since currently we automatically list servers as running
4748 and usable even if we know they're jerks.
4749 - Provide dire warnings to any users who set DirServer; move it out
4750 of torrc.sample and into torrc.complete.
4751 - Add MyFamily to torrc.sample in the server section.
4752 - Add nicknames to the DirServer line, so we can refer to them
4753 without requiring all our users to memorize their IP addresses.
4754 - When we get an EOF or a timeout on a directory connection, note
4755 how many bytes of serverdesc we are dropping. This will help
4756 us determine whether it is smart to parse incomplete serverdesc
4758 - Add a new function to "change pseudonyms" -- that is, to stop
4759 using any currently-dirty circuits for new streams, so we don't
4760 link new actions to old actions. Currently it's only called on
4761 HUP (or SIGNAL RELOAD).
4762 - On sighup, if UseHelperNodes changed to 1, use new circuits.
4763 - Start using RAND_bytes rather than RAND_pseudo_bytes from
4764 OpenSSL. Also, reseed our entropy every hour, not just at
4765 startup. And entropy in 512-bit chunks, not 160-bit chunks.
4767 o Fixes on 0.1.1.7-alpha:
4768 - Nobody ever implemented EVENT_ADDRMAP for control protocol
4769 version 0, so don't let version 0 controllers ask for it.
4770 - If you requested something with too many newlines via the
4771 v1 controller protocol, you could crash tor.
4772 - Fix a number of memory leaks, including some pretty serious ones.
4773 - Re-enable DirPort testing again, so Tor servers will be willing
4774 to advertise their DirPort if it's reachable.
4775 - On TLS handshake, only check the other router's nickname against
4776 its expected nickname if is_named is set.
4778 o Fixes forward-ported from 0.1.0.15:
4779 - Don't crash when we don't have any spare file descriptors and we
4780 try to spawn a dns or cpu worker.
4781 - Make the numbers in read-history and write-history into uint64s,
4782 so they don't overflow and publish negatives in the descriptor.
4785 - For the OS X package's modified privoxy config file, comment
4786 out the "logfile" line so we don't log everything passed
4788 - We were whining about using socks4 or socks5-with-local-lookup
4789 even when it's an IP in the "virtual" range we designed exactly
4791 - We were leaking some memory every time the client changes IPs.
4792 - Never call free() on tor_malloc()d memory. This will help us
4793 use dmalloc to detect memory leaks.
4794 - Check for named servers when looking them up by nickname;
4795 warn when we'recalling a non-named server by its nickname;
4796 don't warn twice about the same name.
4797 - Try to list MyFamily elements by key, not by nickname, and warn
4798 if we've not heard of the server.
4799 - Make windows platform detection (uname equivalent) smarter.
4800 - It turns out sparc64 doesn't like unaligned access either.
4803 Changes in version 0.1.0.15 - 2005-09-23
4804 o Bugfixes on 0.1.0.x:
4805 - Reject ports 465 and 587 (spam targets) in default exit policy.
4806 - Don't crash when we don't have any spare file descriptors and we
4807 try to spawn a dns or cpu worker.
4808 - Get rid of IgnoreVersion undocumented config option, and make us
4809 only warn, never exit, when we're running an obsolete version.
4810 - Don't try to print a null string when your server finds itself to
4811 be unreachable and the Address config option is empty.
4812 - Make the numbers in read-history and write-history into uint64s,
4813 so they don't overflow and publish negatives in the descriptor.
4814 - Fix a minor memory leak in smartlist_string_remove().
4815 - We were only allowing ourselves to upload a server descriptor at
4816 most every 20 minutes, even if it changed earlier than that.
4817 - Clean up log entries that pointed to old URLs.
4820 Changes in version 0.1.1.7-alpha - 2005-09-14
4821 o Fixes on 0.1.1.6-alpha:
4822 - Exit servers were crashing when people asked them to make a
4823 connection to an address not in their exit policy.
4824 - Looking up a non-existent stream for a v1 control connection would
4826 - Fix a seg fault if we ask a dirserver for a descriptor by
4827 fingerprint but he doesn't know about him.
4828 - SETCONF was appending items to linelists, not clearing them.
4829 - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
4830 out and refuse the setconf if it would fail.
4831 - Downgrade the dirserver log messages when whining about
4835 - Add Peter Palfrader's check-tor script to tor/contrib/
4836 It lets you easily check whether a given server (referenced by
4837 nickname) is reachable by you.
4838 - Numerous changes to move towards client-side v2 directories. Not
4842 - If the user gave tor an odd number of command-line arguments,
4843 we were silently ignoring the last one. Now we complain and fail.
4844 [This wins the oldest-bug prize -- this bug has been present since
4845 November 2002, as released in Tor 0.0.0.]
4846 - Do not use unaligned memory access on alpha, mips, or mipsel.
4847 It *works*, but is very slow, so we treat them as if it doesn't.
4848 - Retry directory requests if we fail to get an answer we like
4849 from a given dirserver (we were retrying before, but only if
4850 we fail to connect).
4851 - When writing the RecommendedVersions line, sort them first.
4852 - When the client asked for a rendezvous port that the hidden
4853 service didn't want to provide, we were sending an IP address
4854 back along with the end cell. Fortunately, it was zero. But stop
4856 - Correct "your server is reachable" log entries to indicate that
4857 it was self-testing that told us so.
4860 Changes in version 0.1.1.6-alpha - 2005-09-09
4861 o Fixes on 0.1.1.5-alpha:
4862 - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
4863 - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
4864 - Fix bug with tor_memmem finding a match at the end of the string.
4865 - Make unit tests run without segfaulting.
4866 - Resolve some solaris x86 compile warnings.
4867 - Handle duplicate lines in approved-routers files without warning.
4868 - Fix bug where as soon as a server refused any requests due to his
4869 exit policy (e.g. when we ask for localhost and he tells us that's
4870 127.0.0.1 and he won't do it), we decided he wasn't obeying his
4871 exit policy using him for any exits.
4872 - Only do openssl hardware accelerator stuff if openssl version is
4875 o New controller features/fixes:
4876 - Add a "RESETCONF" command so you can set config options like
4877 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
4878 a config option in the torrc with no value, then it clears it
4879 entirely (rather than setting it to its default).
4880 - Add a "GETINFO config-file" to tell us where torrc is.
4881 - Avoid sending blank lines when GETINFO replies should be empty.
4882 - Add a QUIT command for the controller (for using it manually).
4883 - Fix a bug in SAVECONF that was adding default dirservers and
4884 other redundant entries to the torrc file.
4886 o Start on the new directory design:
4887 - Generate, publish, cache, serve new network-status format.
4888 - Publish individual descriptors (by fingerprint, by "all", and by
4890 - Publish client and server recommended versions separately.
4891 - Allow tor_gzip_uncompress() to handle multiple concatenated
4892 compressed strings. Serve compressed groups of router
4893 descriptors. The compression logic here could be more
4895 - Distinguish v1 authorities (all currently trusted directories)
4896 from v2 authorities (all trusted directories).
4897 - Change DirServers config line to note which dirs are v1 authorities.
4898 - Add configuration option "V1AuthoritativeDirectory 1" which
4899 moria1, moria2, and tor26 should set.
4900 - Remove option when getting directory cache to see whether they
4901 support running-routers; they all do now. Replace it with one
4902 to see whether caches support v2 stuff.
4905 - Dirservers now do their own external reachability testing of each
4906 Tor server, and only list them as running if they've been found to
4907 be reachable. We also send back warnings to the server's logs if
4908 it uploads a descriptor that we already believe is unreachable.
4909 - Implement exit enclaves: if we know an IP address for the
4910 destination, and there's a running Tor server at that address
4911 which allows exit to the destination, then extend the circuit to
4912 that exit first. This provides end-to-end encryption and end-to-end
4913 authentication. Also, if the user wants a .exit address or enclave,
4914 use 4 hops rather than 3, and cannibalize a general circ for it
4916 - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
4917 controller. Also, rotate dns and cpu workers if the controller
4918 changes options that will affect them; and initialize the dns
4919 worker cache tree whether or not we start out as a server.
4920 - Only upload a new server descriptor when options change, 18
4921 hours have passed, uptime is reset, or bandwidth changes a lot.
4922 - Check [X-]Forwarded-For headers in HTTP requests when generating
4923 log messages. This lets people run dirservers (and caches) behind
4924 Apache but still know which IP addresses are causing warnings.
4926 o Config option changes:
4927 - Replace (Fascist)Firewall* config options with a new
4928 ReachableAddresses option that understands address policies.
4929 For example, "ReachableAddresses *:80,*:443"
4930 - Get rid of IgnoreVersion undocumented config option, and make us
4931 only warn, never exit, when we're running an obsolete version.
4932 - Make MonthlyAccountingStart config option truly obsolete now.
4935 - Reject ports 465 and 587 in the default exit policy, since
4936 people have started using them for spam too.
4937 - It turns out we couldn't bootstrap a network since we added
4938 reachability detection in 0.1.0.1-rc. Good thing the Tor network
4939 has never gone down. Add an AssumeReachable config option to let
4940 servers and dirservers bootstrap. When we're trying to build a
4941 high-uptime or high-bandwidth circuit but there aren't enough
4942 suitable servers, try being less picky rather than simply failing.
4943 - Our logic to decide if the OR we connected to was the right guy
4944 was brittle and maybe open to a mitm for unverified routers.
4945 - We weren't cannibalizing circuits correctly for
4946 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
4947 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
4948 build those from scratch. This should make hidden services faster.
4949 - Predict required circuits better, with an eye toward making hidden
4950 services faster on the service end.
4951 - Retry streams if the exit node sends back a 'misc' failure. This
4952 should result in fewer random failures. Also, after failing
4953 from resolve failed or misc, reset the num failures, so we give
4954 it a fair shake next time we try.
4955 - Clean up the rendezvous warn log msgs, and downgrade some to info.
4956 - Reduce severity on logs about dns worker spawning and culling.
4957 - When we're shutting down and we do something like try to post a
4958 server descriptor or rendezvous descriptor, don't complain that
4959 we seem to be unreachable. Of course we are, we're shutting down.
4960 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
4961 We don't use them yet, but maybe one day our DNS resolver will be
4962 able to discover them.
4963 - Make ContactInfo mandatory for authoritative directory servers.
4964 - Require server descriptors to list IPv4 addresses -- hostnames
4965 are no longer allowed. This also fixes some potential security
4966 problems with people providing hostnames as their address and then
4967 preferentially resolving them to partition users.
4968 - Change log line for unreachability to explicitly suggest /etc/hosts
4969 as the culprit. Also make it clearer what IP address and ports we're
4970 testing for reachability.
4971 - Put quotes around user-supplied strings when logging so users are
4972 more likely to realize if they add bad characters (like quotes)
4974 - Let auth dir servers start without specifying an Address config
4976 - Make unit tests (and other invocations that aren't the real Tor)
4977 run without launching listeners, creating subdirectories, and so on.
4980 Changes in version 0.1.1.5-alpha - 2005-08-08
4981 o Bugfixes included in 0.1.0.14.
4983 o Bugfixes on 0.1.0.x:
4984 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
4985 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
4986 it would silently using ignore the 6668.
4989 Changes in version 0.1.0.14 - 2005-08-08
4990 o Bugfixes on 0.1.0.x:
4991 - Fix the other half of the bug with crypto handshakes
4993 - Fix an assert trigger if you send a 'signal term' via the
4994 controller when it's listening for 'event info' messages.
4997 Changes in version 0.1.1.4-alpha - 2005-08-04
4998 o Bugfixes included in 0.1.0.13.
5001 - Improve tor_gettimeofday() granularity on windows.
5002 - Make clients regenerate their keys when their IP address changes.
5003 - Implement some more GETINFO goodness: expose helper nodes, config
5004 options, getinfo keys.
5007 Changes in version 0.1.0.13 - 2005-08-04
5008 o Bugfixes on 0.1.0.x:
5009 - Fix a critical bug in the security of our crypto handshakes.
5010 - Fix a size_t underflow in smartlist_join_strings2() that made
5011 it do bad things when you hand it an empty smartlist.
5012 - Fix Windows installer to ship Tor license (thanks to Aphex for
5013 pointing out this oversight) and put a link to the doc directory
5015 - Explicitly set no-unaligned-access for sparc: it turns out the
5016 new gcc's let you compile broken code, but that doesn't make it
5020 Changes in version 0.1.1.3-alpha - 2005-07-23
5021 o Bugfixes on 0.1.1.2-alpha:
5022 - Fix a bug in handling the controller's "post descriptor"
5024 - Fix several bugs in handling the controller's "extend circuit"
5026 - Fix a bug in handling the controller's "stream status" event.
5027 - Fix an assert failure if we have a controller listening for
5028 circuit events and we go offline.
5029 - Re-allow hidden service descriptors to publish 0 intro points.
5030 - Fix a crash when generating your hidden service descriptor if
5031 you don't have enough intro points already.
5033 o New features on 0.1.1.2-alpha:
5034 - New controller function "getinfo accounting", to ask how
5035 many bytes we've used in this time period.
5036 - Experimental support for helper nodes: a lot of the risk from
5037 a small static adversary comes because users pick new random
5038 nodes every time they rebuild a circuit. Now users will try to
5039 stick to the same small set of entry nodes if they can. Not
5040 enabled by default yet.
5042 o Bugfixes on 0.1.0.12:
5043 - If you're an auth dir server, always publish your dirport,
5044 even if you haven't yet found yourself to be reachable.
5045 - Fix a size_t underflow in smartlist_join_strings2() that made
5046 it do bad things when you hand it an empty smartlist.
5049 Changes in version 0.1.0.12 - 2005-07-18
5050 o New directory servers:
5051 - tor26 has changed IP address.
5053 o Bugfixes on 0.1.0.x:
5054 - Fix a possible double-free in tor_gzip_uncompress().
5055 - When --disable-threads is set, do not search for or link against
5057 - Don't trigger an assert if an authoritative directory server
5058 claims its dirport is 0.
5059 - Fix bug with removing Tor as an NT service: some people were
5060 getting "The service did not return an error." Thanks to Matt
5064 Changes in version 0.1.1.2-alpha - 2005-07-15
5065 o New directory servers:
5066 - tor26 has changed IP address.
5068 o Bugfixes on 0.1.0.x, crashes/leaks:
5069 - Port the servers-not-obeying-their-exit-policies fix from
5071 - Fix an fd leak in start_daemon().
5072 - On Windows, you can't always reopen a port right after you've
5073 closed it. So change retry_listeners() to only close and re-open
5074 ports that have changed.
5075 - Fix a possible double-free in tor_gzip_uncompress().
5077 o Bugfixes on 0.1.0.x, usability:
5078 - When tor_socketpair() fails in Windows, give a reasonable
5079 Windows-style errno back.
5080 - Let people type "tor --install" as well as "tor -install" when
5082 want to make it an NT service.
5083 - NT service patch from Matt Edman to improve error messages.
5084 - When the controller asks for a config option with an abbreviated
5085 name, give the full name in our response.
5086 - Correct the man page entry on TrackHostExitsExpire.
5087 - Looks like we were never delivering deflated (i.e. compressed)
5088 running-routers lists, even when asked. Oops.
5089 - When --disable-threads is set, do not search for or link against
5092 o Bugfixes on 0.1.1.x:
5093 - Fix a seg fault with autodetecting which controller version is
5097 - New hidden service descriptor format: put a version in it, and
5098 let people specify introduction/rendezvous points that aren't
5099 in "the directory" (which is subjective anyway).
5100 - Allow the DEBUG controller event to work again. Mark certain log
5101 entries as "don't tell this to controllers", so we avoid cycles.
5104 Changes in version 0.1.0.11 - 2005-06-30
5105 o Bugfixes on 0.1.0.x:
5106 - Fix major security bug: servers were disregarding their
5107 exit policies if clients behaved unexpectedly.
5108 - Make OS X init script check for missing argument, so we don't
5109 confuse users who invoke it incorrectly.
5110 - Fix a seg fault in "tor --hash-password foo".
5111 - The MAPADDRESS control command was broken.
5114 Changes in version 0.1.1.1-alpha - 2005-06-29
5116 - Make OS X init script check for missing argument, so we don't
5117 confuse users who invoke it incorrectly.
5118 - Fix a seg fault in "tor --hash-password foo".
5119 - Fix a possible way to DoS dirservers.
5120 - When we complain that your exit policy implicitly allows local or
5121 private address spaces, name them explicitly so operators can
5123 - Make the log message less scary when all the dirservers are
5124 temporarily unreachable.
5125 - We were printing the number of idle dns workers incorrectly when
5129 - Revised controller protocol (version 1) that uses ascii rather
5130 than binary. Add supporting libraries in python and java so you
5131 can use the controller from your applications without caring how
5133 - Spiffy new support for crypto hardware accelerators. Can somebody
5137 Changes in version 0.0.9.10 - 2005-06-16
5138 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
5139 - Refuse relay cells that claim to have a length larger than the
5140 maximum allowed. This prevents a potential attack that could read
5141 arbitrary memory (e.g. keys) from an exit server's process
5145 Changes in version 0.1.0.10 - 2005-06-14
5146 o Allow a few EINVALs from libevent before dying. Warn on kqueue with
5147 libevent before 1.1a.
5150 Changes in version 0.1.0.9-rc - 2005-06-09
5152 - Reset buf->highwater every time buf_shrink() is called, not just on
5153 a successful shrink. This was causing significant memory bloat.
5154 - Fix buffer overflow when checking hashed passwords.
5155 - Security fix: if seeding the RNG on Win32 fails, quit.
5156 - Allow seeding the RNG on Win32 even when you're not running as
5158 - Disable threading on Solaris too. Something is wonky with it,
5159 cpuworkers, and reentrant libs.
5160 - Reenable the part of the code that tries to flush as soon as an
5161 OR outbuf has a full TLS record available. Perhaps this will make
5162 OR outbufs not grow as huge except in rare cases, thus saving lots
5163 of CPU time plus memory.
5164 - Reject malformed .onion addresses rather then passing them on as
5165 normal web requests.
5166 - Adapt patch from Adam Langley: fix possible memory leak in
5167 tor_lookup_hostname().
5168 - Initialize libevent later in the startup process, so the logs are
5169 already established by the time we start logging libevent warns.
5170 - Use correct errno on win32 if libevent fails.
5171 - Check and warn about known-bad/slow libevent versions.
5172 - Pay more attention to the ClientOnly config option.
5173 - Have torctl.in/tor.sh.in check for location of su binary (needed
5175 - Correct/add man page entries for LongLivedPorts, ExitPolicy,
5176 KeepalivePeriod, ClientOnly, NoPublish, HttpProxy, HttpsProxy,
5177 HttpProxyAuthenticator
5178 - Stop warning about sigpipes in the logs. We're going to
5179 pretend that getting these occassionally is normal and fine.
5180 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in
5182 installer screens; and don't put stuff into StartupItems unless
5183 the user asks you to.
5184 - Require servers that use the default dirservers to have public IP
5185 addresses. We have too many servers that are configured with private
5186 IPs and their admins never notice the log entries complaining that
5187 their descriptors are being rejected.
5188 - Add OSX uninstall instructions. An actual uninstall script will
5192 Changes in version 0.1.0.8-rc - 2005-05-23
5194 - It turns out that kqueue on OS X 10.3.9 was causing kernel
5195 panics. Disable kqueue on all OS X Tors.
5196 - Fix RPM: remove duplicate line accidentally added to the rpm
5198 - Disable threads on openbsd too, since its gethostaddr is not
5200 - Tolerate libevent 0.8 since it still works, even though it's
5202 - Enable building on Red Hat 9.0 again.
5203 - Allow the middle hop of the testing circuit to be running any
5204 version, now that most of them have the bugfix to let them connect
5205 to unknown servers. This will allow reachability testing to work
5206 even when 0.0.9.7-0.0.9.9 become obsolete.
5207 - Handle relay cells with rh.length too large. This prevents
5208 a potential attack that could read arbitrary memory (maybe even
5209 keys) from the exit server's process.
5210 - We screwed up the dirport reachability testing when we don't yet
5211 have a cached version of the directory. Hopefully now fixed.
5212 - Clean up router_load_single_router() (used by the controller),
5213 so it doesn't seg fault on error.
5214 - Fix a minor memory leak when somebody establishes an introduction
5215 point at your Tor server.
5216 - If a socks connection ends because read fails, don't warn that
5217 you're not sending a socks reply back.
5220 - Add HttpProxyAuthenticator config option too, that works like
5221 the HttpsProxyAuthenticator config option.
5222 - Encode hashed controller passwords in hex instead of base64,
5223 to make it easier to write controllers.
5226 Changes in version 0.1.0.7-rc - 2005-05-17
5228 - Fix a bug in the OS X package installer that prevented it from
5229 installing on Tiger.
5230 - Fix a script bug in the OS X package installer that made it
5231 complain during installation.
5232 - Find libevent even if it's hiding in /usr/local/ and your
5233 CFLAGS and LDFLAGS don't tell you to look there.
5234 - Be able to link with libevent as a shared library (the default
5235 after 1.0d), even if it's hiding in /usr/local/lib and even
5236 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
5237 assuming you're running gcc. Otherwise fail and give a useful
5239 - Fix a bug in the RPM packager: set home directory for _tor to
5240 something more reasonable when first installing.
5241 - Free a minor amount of memory that is still reachable on exit.
5244 Changes in version 0.1.0.6-rc - 2005-05-14
5246 - Implement --disable-threads configure option. Disable threads on
5247 netbsd by default, because it appears to have no reentrant resolver
5249 - Apple's OS X 10.4.0 ships with a broken kqueue. The new libevent
5250 release (1.1) detects and disables kqueue if it's broken.
5251 - Append default exit policy before checking for implicit internal
5252 addresses. Now we don't log a bunch of complaints on startup
5253 when using the default exit policy.
5254 - Some people were putting "Address " in their torrc, and they had
5255 a buggy resolver that resolved " " to 0.0.0.0. Oops.
5256 - If DataDir is ~/.tor, and that expands to /.tor, then default to
5257 LOCALSTATEDIR/tor instead.
5258 - Fix fragmented-message bug in TorControl.py.
5259 - Resolve a minor bug which would prevent unreachable dirports
5260 from getting suppressed in the published descriptor.
5261 - When the controller gave us a new descriptor, we weren't resolving
5262 it immediately, so Tor would think its address was 0.0.0.0 until
5263 we fetched a new directory.
5264 - Fix an uppercase/lowercase case error in suppressing a bogus
5265 libevent warning on some Linuxes.
5268 - Begin scrubbing sensitive strings from logs by default. Turn off
5269 the config option SafeLogging if you need to do debugging.
5270 - Switch to a new buffer management algorithm, which tries to avoid
5271 reallocing and copying quite as much. In first tests it looks like
5272 it uses *more* memory on average, but less cpu.
5273 - First cut at support for "create-fast" cells. Clients can use
5274 these when extending to their first hop, since the TLS already
5275 provides forward secrecy and authentication. Not enabled on
5277 - When dirservers refuse a router descriptor, we now log its
5278 contactinfo, platform, and the poster's IP address.
5279 - Call tor_free_all instead of connections_free_all after forking, to
5280 save memory on systems that need to fork.
5281 - Whine at you if you're a server and you don't set your contactinfo.
5282 - Implement --verify-config command-line option to check if your torrc
5283 is valid without actually launching Tor.
5284 - Rewrite address "serifos.exit" to "localhost.serifos.exit"
5285 rather than just rejecting it.
5288 Changes in version 0.1.0.5-rc - 2005-04-27
5290 - Stop trying to print a null pointer if an OR conn fails because
5291 we didn't like its cert.
5293 - Switch our internal buffers implementation to use a ring buffer,
5294 to hopefully improve performance for fast servers a lot.
5295 - Add HttpsProxyAuthenticator support (basic auth only), based
5296 on patch from Adam Langley.
5297 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
5298 the fast servers that have been joining lately.
5299 - Give hidden service accesses extra time on the first attempt,
5300 since 60 seconds is often only barely enough. This might improve
5302 - Improve performance for dirservers: stop re-parsing the whole
5303 directory every time you regenerate it.
5304 - Add more debugging info to help us find the weird dns freebsd
5305 pthreads bug; cleaner debug messages to help track future issues.
5308 Changes in version 0.0.9.9 - 2005-04-23
5309 o Bugfixes on 0.0.9.x:
5310 - If unofficial Tor clients connect and send weird TLS certs, our
5311 Tor server triggers an assert. This release contains a minimal
5312 backport from the broader fix that we put into 0.1.0.4-rc.
5315 Changes in version 0.1.0.4-rc - 2005-04-23
5317 - If unofficial Tor clients connect and send weird TLS certs, our
5318 Tor server triggers an assert. Stop asserting, and start handling
5319 TLS errors better in other situations too.
5320 - When the controller asks us to tell it about all the debug-level
5321 logs, it turns out we were generating debug-level logs while
5322 telling it about them, which turns into a bad loop. Now keep
5323 track of whether you're sending a debug log to the controller,
5324 and don't log when you are.
5325 - Fix the "postdescriptor" feature of the controller interface: on
5326 non-complete success, only say "done" once.
5328 - Clients are now willing to load balance over up to 2mB, not 1mB,
5329 of advertised bandwidth capacity.
5330 - Add a NoPublish config option, so you can be a server (e.g. for
5331 testing running Tor servers in other Tor networks) without
5332 publishing your descriptor to the primary dirservers.
5335 Changes in version 0.1.0.3-rc - 2005-04-08
5336 o Improvements on 0.1.0.2-rc:
5337 - Client now retries when streams end early for 'hibernating' or
5338 'resource limit' reasons, rather than failing them.
5339 - More automated handling for dirserver operators:
5340 - Automatically approve nodes running 0.1.0.2-rc or later,
5341 now that the the reachability detection stuff is working.
5342 - Now we allow two unverified servers with the same nickname
5343 but different keys. But if a nickname is verified, only that
5344 nickname+key are allowed.
5345 - If you're an authdirserver connecting to an address:port,
5346 and it's not the OR you were expecting, forget about that
5347 descriptor. If he *was* the one you were expecting, then forget
5348 about all other descriptors for that address:port.
5349 - Allow servers to publish descriptors from 12 hours in the future.
5350 Corollary: only whine about clock skew from the dirserver if
5351 he's a trusted dirserver (since now even verified servers could
5352 have quite wrong clocks).
5353 - Adjust maximum skew and age for rendezvous descriptors: let skew
5354 be 48 hours rather than 90 minutes.
5355 - Efficiency improvements:
5356 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
5357 it much faster to look up a circuit for each relay cell.
5358 - Remove most calls to assert_all_pending_dns_resolves_ok(),
5359 since they're eating our cpu on exit nodes.
5360 - Stop wasting time doing a case insensitive comparison for every
5361 dns name every time we do any lookup. Canonicalize the names to
5362 lowercase and be done with it.
5363 - Start sending 'truncated' cells back rather than destroy cells,
5364 if the circuit closes in front of you. This means we won't have
5365 to abandon partially built circuits.
5366 - Only warn once per nickname from add_nickname_list_to_smartlist
5367 per failure, so an entrynode or exitnode choice that's down won't
5369 - Put a note in the torrc about abuse potential with the default
5371 - Revise control spec and implementation to allow all log messages to
5372 be sent to controller with their severities intact (suggested by
5373 Matt Edman). Update TorControl to handle new log event types.
5374 - Provide better explanation messages when controller's POSTDESCRIPTOR
5376 - Stop putting nodename in the Platform string in server descriptors.
5377 It doesn't actually help, and it is confusing/upsetting some people.
5379 o Bugfixes on 0.1.0.2-rc:
5380 - We were printing the host mask wrong in exit policies in server
5381 descriptors. This isn't a critical bug though, since we were still
5382 obeying the exit policy internally.
5383 - Fix Tor when compiled with libevent but without pthreads: move
5384 connection_unregister() from _connection_free() to
5386 - Fix an assert trigger (already fixed in 0.0.9.x): when we have
5387 the rare mysterious case of accepting a conn on 0.0.0.0:0, then
5388 when we look through the connection array, we'll find any of the
5389 cpu/dnsworkers. This is no good.
5391 o Bugfixes on 0.0.9.8:
5392 - Fix possible bug on threading platforms (e.g. win32) which was
5393 leaking a file descriptor whenever a cpuworker or dnsworker died.
5394 - When using preferred entry or exit nodes, ignore whether the
5395 circuit wants uptime or capacity. They asked for the nodes, they
5397 - chdir() to your datadirectory at the *end* of the daemonize process,
5398 not the beginning. This was a problem because the first time you
5399 run tor, if your datadir isn't there, and you have runasdaemon set
5400 to 1, it will try to chdir to it before it tries to create it. Oops.
5401 - Handle changed router status correctly when dirserver reloads
5402 fingerprint file. We used to be dropping all unverified descriptors
5403 right then. The bug was hidden because we would immediately
5404 fetch a directory from another dirserver, which would include the
5405 descriptors we just dropped.
5406 - When we're connecting to an OR and he's got a different nickname/key
5407 than we were expecting, only complain loudly if we're an OP or a
5408 dirserver. Complaining loudly to the OR admins just confuses them.
5409 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
5410 artificially capped at 500kB.
5413 Changes in version 0.0.9.8 - 2005-04-07
5414 o Bugfixes on 0.0.9.x:
5415 - We have a bug that I haven't found yet. Sometimes, very rarely,
5416 cpuworkers get stuck in the 'busy' state, even though the cpuworker
5417 thinks of itself as idle. This meant that no new circuits ever got
5418 established. Here's a workaround to kill any cpuworker that's been
5419 busy for more than 100 seconds.
5422 Changes in version 0.1.0.2-rc - 2005-04-01
5423 o Bugfixes on 0.1.0.1-rc:
5424 - Fixes on reachability detection:
5425 - Don't check for reachability while hibernating.
5426 - If ORPort is reachable but DirPort isn't, still publish the
5427 descriptor, but zero out DirPort until it's found reachable.
5428 - When building testing circs for ORPort testing, use only
5429 high-bandwidth nodes, so fewer circuits fail.
5430 - Complain about unreachable ORPort separately from unreachable
5431 DirPort, so the user knows what's going on.
5432 - Make sure we only conclude ORPort reachability if we didn't
5433 initiate the conn. Otherwise we could falsely conclude that
5434 we're reachable just because we connected to the guy earlier
5435 and he used that same pipe to extend to us.
5436 - Authdirservers shouldn't do ORPort reachability detection,
5437 since they're in clique mode, so it will be rare to find a
5438 server not already connected to them.
5439 - When building testing circuits, always pick middle hops running
5440 Tor 0.0.9.7, so we avoid the "can't extend to unknown routers"
5441 bug. (This is a kludge; it will go away when 0.0.9.x becomes
5443 - When we decide we're reachable, actually publish our descriptor
5445 - Fix bug in redirectstream in the controller.
5446 - Fix the state descriptor strings so logs don't claim edge streams
5447 are in a different state than they actually are.
5448 - Use recent libevent features when possible (this only really affects
5449 win32 and osx right now, because the new libevent with these
5450 features hasn't been released yet). Add code to suppress spurious
5452 - Prevent possible segfault in connection_close_unattached_ap().
5453 - Fix newlines on torrc in win32.
5454 - Improve error msgs when tor-resolve fails.
5456 o Improvements on 0.0.9.x:
5457 - New experimental script tor/contrib/ExerciseServer.py (needs more
5458 work) that uses the controller interface to build circuits and
5459 fetch pages over them. This will help us bootstrap servers that
5460 have lots of capacity but haven't noticed it yet.
5461 - New experimental script tor/contrib/PathDemo.py (needs more work)
5462 that uses the controller interface to let you choose whole paths
5464 "<hostname>.<path,separated by dots>.<length of path>.path"
5465 - When we've connected to an OR and handshaked but didn't like
5466 the result, we were closing the conn without sending destroy
5467 cells back for pending circuits. Now send those destroys.
5470 Changes in version 0.0.9.7 - 2005-04-01
5471 o Bugfixes on 0.0.9.x:
5472 - Fix another race crash bug (thanks to Glenn Fink for reporting).
5473 - Compare identity to identity, not to nickname, when extending to
5474 a router not already in the directory. This was preventing us from
5475 extending to unknown routers. Oops.
5476 - Make sure to create OS X Tor user in <500 range, so we aren't
5477 creating actual system users.
5478 - Note where connection-that-hasn't-sent-end was marked, and fix
5479 a few really loud instances of this harmless bug (it's fixed more
5483 Changes in version 0.1.0.1-rc - 2005-03-28
5485 - Add reachability testing. Your Tor server will automatically try
5486 to see if its ORPort and DirPort are reachable from the outside,
5487 and it won't upload its descriptor until it decides they are.
5488 - Handle unavailable hidden services better. Handle slow or busy
5489 hidden services better.
5490 - Add support for CONNECTing through https proxies, with "HttpsProxy"
5492 - New exit policy: accept most low-numbered ports, rather than
5493 rejecting most low-numbered ports.
5494 - More Tor controller support (still experimental). See
5495 http://tor.eff.org/doc/control-spec.txt for all the new features,
5496 including signals to emulate unix signals from any platform;
5497 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
5498 closestream; closecircuit; etc.
5499 - Make nt services work and start on startup on win32 (based on
5500 patch by Matt Edman).
5501 - Add a new AddressMap config directive to rewrite incoming socks
5502 addresses. This lets you, for example, declare an implicit
5503 required exit node for certain sites.
5504 - Add a new TrackHostExits config directive to trigger addressmaps
5505 for certain incoming socks addresses -- for sites that break when
5506 your exit keeps changing (based on patch by Mike Perry).
5507 - Redo the client-side dns cache so it's just an addressmap too.
5508 - Notice when our IP changes, and reset stats/uptime/reachability.
5509 - When an application is using socks5, give him the whole variety of
5510 potential socks5 responses (connect refused, host unreachable, etc),
5511 rather than just "success" or "failure".
5512 - A more sane version numbering system. See
5513 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
5514 - New contributed script "exitlist": a simple python script to
5515 parse directories and find Tor nodes that exit to listed
5517 - New contributed script "privoxy-tor-toggle" to toggle whether
5518 Privoxy uses Tor. Seems to be configured for Debian by default.
5519 - Report HTTP reasons to client when getting a response from directory
5520 servers -- so you can actually know what went wrong.
5521 - New config option MaxAdvertisedBandwidth which lets you advertise
5522 a low bandwidthrate (to not attract as many circuits) while still
5523 allowing a higher bandwidthrate in reality.
5525 o Robustness/stability fixes:
5526 - Make Tor use Niels Provos's libevent instead of its current
5527 poll-but-sometimes-select mess. This will let us use faster async
5528 cores (like epoll, kpoll, and /dev/poll), and hopefully work better
5530 - pthread support now too. This was forced because when we forked,
5531 we ended up wasting a lot of duplicate ram over time. Also switch
5532 to foo_r versions of some library calls to allow reentry and
5534 - Better handling for heterogeneous / unreliable nodes:
5535 - Annotate circuits w/ whether they aim to contain high uptime nodes
5536 and/or high capacity nodes. When building circuits, choose
5538 - This means that every single node in an intro rend circuit,
5539 not just the last one, will have a minimum uptime.
5540 - New config option LongLivedPorts to indicate application streams
5541 that will want high uptime circuits.
5542 - Servers reset uptime when a dir fetch entirely fails. This
5543 hopefully reflects stability of the server's network connectivity.
5544 - If somebody starts his tor server in Jan 2004 and then fixes his
5545 clock, don't make his published uptime be a year.
5546 - Reset published uptime when you wake up from hibernation.
5547 - Introduce a notion of 'internal' circs, which are chosen without
5548 regard to the exit policy of the last hop. Intro and rendezvous
5549 circs must be internal circs, to avoid leaking information. Resolve
5550 and connect streams can use internal circs if they want.
5551 - New circuit pooling algorithm: make sure to have enough circs around
5552 to satisfy any predicted ports, and also make sure to have 2 internal
5553 circs around if we've required internal circs lately (and with high
5554 uptime if we've seen that lately too).
5555 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
5556 which describes how often we retry making new circuits if current
5557 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
5558 how long we're willing to make use of an already-dirty circuit.
5559 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
5560 circ as necessary, if there are any completed ones lying around
5561 when we try to launch one.
5562 - Make hidden services try to establish a rendezvous for 30 seconds,
5563 rather than for n (where n=3) attempts to build a circuit.
5564 - Change SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to a config option
5565 "ShutdownWaitLength".
5566 - Try to be more zealous about calling connection_edge_end when
5567 things go bad with edge conns in connection.c.
5568 - Revise tor-spec to add more/better stream end reasons.
5569 - Revise all calls to connection_edge_end to avoid sending "misc",
5570 and to take errno into account where possible.
5573 - Fix a race condition that can trigger an assert, when we have a
5574 pending create cell and an OR connection fails right then.
5575 - Fix several double-mark-for-close bugs, e.g. where we were finding
5576 a conn for a cell even if that conn is already marked for close.
5577 - Make sequence of log messages when starting on win32 with no config
5578 file more reasonable.
5579 - When choosing an exit node for a new non-internal circ, don't take
5580 into account whether it'll be useful for any pending x.onion
5581 addresses -- it won't.
5582 - Turn addr_policy_compare from a tristate to a quadstate; this should
5583 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
5584 for google.com" problem.
5585 - Make "platform" string in descriptor more accurate for Win32 servers,
5586 so it's not just "unknown platform".
5587 - Fix an edge case in parsing config options (thanks weasel).
5588 If they say "--" on the commandline, it's not an option.
5589 - Reject odd-looking addresses at the client (e.g. addresses that
5590 contain a colon), rather than having the server drop them because
5592 - tor-resolve requests were ignoring .exit if there was a working circuit
5593 they could use instead.
5594 - REUSEADDR on normal platforms means you can rebind to the port
5595 right after somebody else has let it go. But REUSEADDR on win32
5596 means to let you bind to the port _even when somebody else
5597 already has it bound_! So, don't do that on Win32.
5598 - Change version parsing logic: a version is "obsolete" if it is not
5599 recommended and (1) there is a newer recommended version in the
5600 same series, or (2) there are no recommended versions in the same
5601 series, but there are some recommended versions in a newer series.
5602 A version is "new" if it is newer than any recommended version in
5604 - Stop most cases of hanging up on a socks connection without sending
5608 - Require BandwidthRate to be at least 20kB/s for servers.
5609 - When a dirserver causes you to give a warn, mention which dirserver
5611 - New config option DirAllowPrivateAddresses for authdirservers.
5612 Now by default they refuse router descriptors that have non-IP or
5613 private-IP addresses.
5614 - Stop publishing socksport in the directory, since it's not
5615 actually meant to be public. For compatibility, publish a 0 there
5617 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
5618 smart" value, that is low for servers and high for clients.
5619 - If our clock jumps forward by 100 seconds or more, assume something
5620 has gone wrong with our network and abandon all not-yet-used circs.
5621 - Warn when exit policy implicitly allows local addresses.
5622 - If we get an incredibly skewed timestamp from a dirserver mirror
5623 that isn't a verified OR, don't warn -- it's probably him that's
5625 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
5626 cookies to disk and doesn't log each web request to disk. (Thanks
5627 to Brett Carrington for pointing this out.)
5628 - When a client asks us for a dir mirror and we don't have one,
5629 launch an attempt to get a fresh one.
5630 - If we're hibernating and we get a SIGINT, exit immediately.
5631 - Add --with-dmalloc ./configure option, to track memory leaks.
5632 - And try to free all memory on closing, so we can detect what
5634 - Cache local dns resolves correctly even when they're .exit
5636 - Give a better warning when some other server advertises an
5637 ORPort that is actually an apache running ssl.
5638 - Add "opt hibernating 1" to server descriptor to make it clearer
5639 whether the server is hibernating.
5642 Changes in version 0.0.9.6 - 2005-03-24
5643 o Bugfixes on 0.0.9.x (crashes and asserts):
5644 - Add new end stream reasons to maintainance branch. Fix bug where
5645 reason (8) could trigger an assert. Prevent bug from recurring.
5646 - Apparently win32 stat wants paths to not end with a slash.
5647 - Fix assert triggers in assert_cpath_layer_ok(), where we were
5648 blowing away the circuit that conn->cpath_layer points to, then
5649 checking to see if the circ is well-formed. Backport check to make
5650 sure we dont use the cpath on a closed connection.
5651 - Prevent circuit_resume_edge_reading_helper() from trying to package
5652 inbufs for marked-for-close streams.
5653 - Don't crash on hup if your options->address has become unresolvable.
5654 - Some systems (like OS X) sometimes accept() a connection and tell
5655 you the remote host is 0.0.0.0:0. If this happens, due to some
5656 other mis-features, we get confused; so refuse the conn for now.
5658 o Bugfixes on 0.0.9.x (other):
5659 - Fix harmless but scary "Unrecognized content encoding" warn message.
5660 - Add new stream error reason: TORPROTOCOL reason means "you are not
5661 speaking a version of Tor I understand; say bye-bye to your stream."
5662 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
5663 into the future, now that we are more tolerant of skew. This
5664 resolves a bug where a Tor server would refuse to cache a directory
5665 because all the directories it gets are too far in the future;
5666 yet the Tor server never logs any complaints about clock skew.
5667 - Mac packaging magic: make man pages useable, and do not overwrite
5668 existing torrc files.
5669 - Make OS X log happily to /var/log/tor/tor.log
5672 Changes in version 0.0.9.5 - 2005-02-22
5673 o Bugfixes on 0.0.9.x:
5674 - Fix an assert race at exit nodes when resolve requests fail.
5675 - Stop picking unverified dir mirrors--it only leads to misery.
5676 - Patch from Matt Edman to make NT services work better. Service
5677 support is still not compiled into the executable by default.
5678 - Patch from Dmitri Bely so the Tor service runs better under
5679 the win32 SYSTEM account.
5680 - Make tor-resolve actually work (?) on Win32.
5681 - Fix a sign bug when getrlimit claims to have 4+ billion
5682 file descriptors available.
5683 - Stop refusing to start when bandwidthburst == bandwidthrate.
5684 - When create cells have been on the onion queue more than five
5685 seconds, just send back a destroy and take them off the list.
5688 Changes in version 0.0.9.4 - 2005-02-03
5689 o Bugfixes on 0.0.9:
5690 - Fix an assert bug that took down most of our servers: when
5691 a server claims to have 1 GB of bandwidthburst, don't
5693 - Don't crash as badly if we have spawned the max allowed number
5694 of dnsworkers, or we're out of file descriptors.
5695 - Block more file-sharing ports in the default exit policy.
5696 - MaxConn is now automatically set to the hard limit of max
5697 file descriptors we're allowed (ulimit -n), minus a few for
5699 - Give a clearer message when servers need to raise their
5700 ulimit -n when they start running out of file descriptors.
5701 - SGI Compatibility patches from Jan Schaumann.
5702 - Tolerate a corrupt cached directory better.
5703 - When a dirserver hasn't approved your server, list which one.
5704 - Go into soft hibernation after 95% of the bandwidth is used,
5705 not 99%. This is especially important for daily hibernators who
5706 have a small accounting max. Hopefully it will result in fewer
5707 cut connections when the hard hibernation starts.
5708 - Load-balance better when using servers that claim more than
5709 800kB/s of capacity.
5710 - Make NT services work (experimental, only used if compiled in).
5713 Changes in version 0.0.9.3 - 2005-01-21
5714 o Bugfixes on 0.0.9:
5715 - Backport the cpu use fixes from main branch, so busy servers won't
5716 need as much processor time.
5717 - Work better when we go offline and then come back, or when we
5718 run Tor at boot before the network is up. We do this by
5719 optimistically trying to fetch a new directory whenever an
5720 application request comes in and we think we're offline -- the
5721 human is hopefully a good measure of when the network is back.
5722 - Backport some minimal hidserv bugfixes: keep rend circuits open as
5723 long as you keep using them; actually publish hidserv descriptors
5724 shortly after they change, rather than waiting 20-40 minutes.
5725 - Enable Mac startup script by default.
5726 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
5727 - When you update AllowUnverifiedNodes or FirewallPorts via the
5728 controller's setconf feature, we were always appending, never
5730 - When you update HiddenServiceDir via setconf, it was screwing up
5731 the order of reading the lines, making it fail.
5732 - Do not rewrite a cached directory back to the cache; otherwise we
5733 will think it is recent and not fetch a newer one on startup.
5734 - Workaround for webservers that lie about Content-Encoding: Tor
5735 now tries to autodetect compressed directories and compression
5736 itself. This lets us Proxypass dir fetches through apache.
5739 Changes in version 0.0.9.2 - 2005-01-04
5740 o Bugfixes on 0.0.9 (crashes and asserts):
5741 - Fix an assert on startup when the disk is full and you're logging
5743 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
5744 style address, then we'd crash.
5745 - Fix an assert trigger when the running-routers string we get from
5746 a dirserver is broken.
5747 - Make worker threads start and run on win32. Now win32 servers
5749 - Bandaid (not actually fix, but now it doesn't crash) an assert
5750 where the dns worker dies mysteriously and the main Tor process
5751 doesn't remember anything about the address it was resolving.
5753 o Bugfixes on 0.0.9 (Win32):
5754 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
5755 name out of the warning/assert messages.
5756 - Fix a superficial "unhandled error on read" bug on win32.
5757 - The win32 installer no longer requires a click-through for our
5758 license, since our Free Software license grants rights but does not
5760 - Win32: When connecting to a dirserver fails, try another one
5761 immediately. (This was already working for non-win32 Tors.)
5762 - Stop trying to parse $HOME on win32 when hunting for default
5764 - Make tor-resolve.c work on win32 by calling network_init().
5766 o Bugfixes on 0.0.9 (other):
5767 - Make 0.0.9.x build on Solaris again.
5768 - Due to a fencepost error, we were blowing away the \n when reporting
5769 confvalue items in the controller. So asking for multiple config
5770 values at once couldn't work.
5771 - When listing circuits that are pending on an opening OR connection,
5772 if we're an OR we were listing circuits that *end* at us as
5773 being pending on every listener, dns/cpu worker, etc. Stop that.
5774 - Dirservers were failing to create 'running-routers' or 'directory'
5775 strings if we had more than some threshold of routers. Fix them so
5776 they can handle any number of routers.
5777 - Fix a superficial "Duplicate mark for close" bug.
5778 - Stop checking for clock skew for OR connections, even for servers.
5779 - Fix a fencepost error that was chopping off the last letter of any
5780 nickname that is the maximum allowed nickname length.
5781 - Update URLs in log messages so they point to the new website.
5782 - Fix a potential problem in mangling server private keys while
5783 writing to disk (not triggered yet, as far as we know).
5784 - Include the licenses for other free software we include in Tor,
5785 now that we're shipping binary distributions more regularly.
5788 Changes in version 0.0.9.1 - 2004-12-15
5789 o Bugfixes on 0.0.9:
5790 - Make hibernation actually work.
5791 - Make HashedControlPassword config option work.
5792 - When we're reporting event circuit status to a controller,
5793 don't use the stream status code.
5796 Changes in version 0.0.9 - 2004-12-12
5798 - Clean up manpage and torrc.sample file.
5799 - Clean up severities and text of log warnings.
5801 - Make servers trigger an assert when they enter hibernation.
5804 Changes in version 0.0.9rc7 - 2004-12-08
5805 o Bugfixes on 0.0.9rc:
5806 - Fix a stack-trashing crash when an exit node begins hibernating.
5807 - Avoid looking at unallocated memory while considering which
5808 ports we need to build circuits to cover.
5809 - Stop a sigpipe: when an 'end' cell races with eof from the app,
5810 we shouldn't hold-open-until-flush if the eof arrived first.
5811 - Fix a bug with init_cookie_authentication() in the controller.
5812 - When recommending new-format log lines, if the upper bound is
5813 LOG_ERR, leave it implicit.
5815 o Bugfixes on 0.0.8.1:
5816 - Fix a whole slew of memory leaks.
5817 - Fix isspace() and friends so they still make Solaris happy
5818 but also so they don't trigger asserts on win32.
5819 - Fix parse_iso_time on platforms without strptime (eg win32).
5820 - win32: tolerate extra "readable" events better.
5821 - win32: when being multithreaded, leave parent fdarray open.
5822 - Make unit tests work on win32.
5825 Changes in version 0.0.9rc6 - 2004-12-06
5826 o Bugfixes on 0.0.9pre:
5827 - Clean up some more integer underflow opportunities (not exploitable
5829 - While hibernating, hup should not regrow our listeners.
5830 - Send an end to the streams we close when we hibernate, rather
5831 than just chopping them off.
5832 - React to eof immediately on non-open edge connections.
5834 o Bugfixes on 0.0.8.1:
5835 - Calculate timeout for waiting for a connected cell from the time
5836 we sent the begin cell, not from the time the stream started. If
5837 it took a long time to establish the circuit, we would time out
5838 right after sending the begin cell.
5839 - Fix router_compare_addr_to_addr_policy: it was not treating a port
5840 of * as always matching, so we were picking reject *:* nodes as
5841 exit nodes too. Oops.
5844 - New circuit building strategy: keep a list of ports that we've
5845 used in the past 6 hours, and always try to have 2 circuits open
5846 or on the way that will handle each such port. Seed us with port
5847 80 so web users won't complain that Tor is "slow to start up".
5848 - Make kill -USR1 dump more useful stats about circuits.
5849 - When warning about retrying or giving up, print the address, so
5850 the user knows which one it's talking about.
5851 - If you haven't used a clean circuit in an hour, throw it away,
5852 just to be on the safe side. (This means after 6 hours a totally
5853 unused Tor client will have no circuits open.)
5856 Changes in version 0.0.9rc5 - 2004-12-01
5857 o Bugfixes on 0.0.8.1:
5858 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
5859 - Let resolve conns retry/expire also, rather than sticking around
5861 - If we are using select, make sure we stay within FD_SETSIZE.
5863 o Bugfixes on 0.0.9pre:
5864 - Fix integer underflow in tor_vsnprintf() that may be exploitable,
5865 but doesn't seem to be currently; thanks to Ilja van Sprundel for
5867 - If anybody set DirFetchPostPeriod, give them StatusFetchPeriod
5868 instead. Impose minima and maxima for all *Period options; impose
5869 even tighter maxima for fetching if we are a caching dirserver.
5870 Clip rather than rejecting.
5871 - Fetch cached running-routers from servers that serve it (that is,
5872 authdirservers and servers running 0.0.9rc5-cvs or later.)
5875 - Accept *:706 (silc) in default exit policy.
5876 - Implement new versioning format for post 0.1.
5877 - Support "foo.nickname.exit" addresses, to let Alice request the
5878 address "foo" as viewed by exit node "nickname". Based on a patch
5880 - Make tor --version --version dump the cvs Id of every file.
5883 Changes in version 0.0.9rc4 - 2004-11-28
5884 o Bugfixes on 0.0.8.1:
5885 - Make windows sockets actually non-blocking (oops), and handle
5886 win32 socket errors better.
5888 o Bugfixes on 0.0.9rc1:
5889 - Actually catch the -USR2 signal.
5892 Changes in version 0.0.9rc3 - 2004-11-25
5893 o Bugfixes on 0.0.8.1:
5894 - Flush the log file descriptor after we print "Tor opening log file",
5895 so we don't see those messages days later.
5897 o Bugfixes on 0.0.9rc1:
5898 - Make tor-resolve work again.
5899 - Avoid infinite loop in tor-resolve if tor hangs up on it.
5900 - Fix an assert trigger for clients/servers handling resolves.
5903 Changes in version 0.0.9rc2 - 2004-11-24
5904 o Bugfixes on 0.0.9rc1:
5905 - I broke socks5 support while fixing the eof bug.
5906 - Allow unitless bandwidths and intervals; they default to bytes
5908 - New servers don't start out hibernating; they are active until
5909 they run out of bytes, so they have a better estimate of how
5910 long it takes, and so their operators can know they're working.
5913 Changes in version 0.0.9rc1 - 2004-11-23
5914 o Bugfixes on 0.0.8.1:
5915 - Finally fix a bug that's been plaguing us for a year:
5916 With high load, circuit package window was reaching 0. Whenever
5917 we got a circuit-level sendme, we were reading a lot on each
5918 socket, but only writing out a bit. So we would eventually reach
5919 eof. This would be noticed and acted on even when there were still
5920 bytes sitting in the inbuf.
5921 - When poll() is interrupted, we shouldn't believe the revents values.
5923 o Bugfixes on 0.0.9pre6:
5924 - Fix hibernate bug that caused pre6 to be broken.
5925 - Don't keep rephist info for routers that haven't had activity for
5926 24 hours. (This matters now that clients have keys, since we track
5928 - Never call close_temp_logs while validating log options.
5929 - Fix backslash-escaping on tor.sh.in and torctl.in.
5932 - Implement weekly/monthly/daily accounting: now you specify your
5933 hibernation properties by
5934 AccountingMax N bytes|KB|MB|GB|TB
5935 AccountingStart day|week|month [day] HH:MM
5936 Defaults to "month 1 0:00".
5937 - Let bandwidth and interval config options be specified as 5 bytes,
5938 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
5939 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
5940 get back to normal.)
5941 - If your requested entry or exit node has advertised bandwidth 0,
5943 - Be more greedy about filling up relay cells -- we try reading again
5944 once we've processed the stuff we read, in case enough has arrived
5945 to fill the last cell completely.
5946 - Apply NT service patch from Osamu Fujino. Still needs more work.
5949 Changes in version 0.0.9pre6 - 2004-11-15
5950 o Bugfixes on 0.0.8.1:
5951 - Fix assert failure on malformed socks4a requests.
5952 - Use identity comparison, not nickname comparison, to choose which
5953 half of circuit-ID-space each side gets to use. This is needed
5954 because sometimes we think of a router as a nickname, and sometimes
5955 as a hex ID, and we can't predict what the other side will do.
5956 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
5957 write() call will fail and we handle it there.
5958 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
5959 and smartlist_len, which are two major profiling offenders.
5961 o Bugfixes on 0.0.9pre5:
5962 - Fix a bug in read_all that was corrupting config files on windows.
5963 - When we're raising the max number of open file descriptors to
5964 'unlimited', don't log that we just raised it to '-1'.
5965 - Include event code with events, as required by control-spec.txt.
5966 - Don't give a fingerprint when clients do --list-fingerprint:
5967 it's misleading, because it will never be the same again.
5968 - Stop using strlcpy in tor_strndup, since it was slowing us
5970 - Remove warn on startup about missing cached-directory file.
5971 - Make kill -USR1 work again.
5972 - Hibernate if we start tor during the "wait for wakeup-time" phase
5973 of an accounting interval. Log our hibernation plans better.
5974 - Authoritative dirservers now also cache their directory, so they
5975 have it on start-up.
5978 - Fetch running-routers; cache running-routers; compress
5979 running-routers; serve compressed running-routers.z
5980 - Add NSI installer script contributed by J Doe.
5981 - Commit VC6 and VC7 workspace/project files.
5982 - Commit a tor.spec for making RPM files, with help from jbash.
5983 - Add contrib/torctl.in contributed by Glenn Fink.
5984 - Implement the control-spec's SAVECONF command, to write your
5985 configuration to torrc.
5986 - Get cookie authentication for the controller closer to working.
5987 - Include control-spec.txt in the tarball.
5988 - When set_conf changes our server descriptor, upload a new copy.
5989 But don't upload it too often if there are frequent changes.
5990 - Document authentication config in man page, and document signals
5992 - Clean up confusing parts of man page and torrc.sample.
5993 - Make expand_filename handle ~ and ~username.
5994 - Use autoconf to enable largefile support where necessary. Use
5995 ftello where available, since ftell can fail at 2GB.
5996 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
5997 log more informatively.
5998 - Give a slightly more useful output for "tor -h".
5999 - Refuse application socks connections to port 0.
6000 - Check clock skew for verified servers, but allow unverified
6001 servers and clients to have any clock skew.
6002 - Break DirFetchPostPeriod into:
6003 - DirFetchPeriod for fetching full directory,
6004 - StatusFetchPeriod for fetching running-routers,
6005 - DirPostPeriod for posting server descriptor,
6006 - RendPostPeriod for posting hidden service descriptors.
6007 - Make sure the hidden service descriptors are at a random offset
6008 from each other, to hinder linkability.
6011 Changes in version 0.0.9pre5 - 2004-11-09
6012 o Bugfixes on 0.0.9pre4:
6013 - Fix a seg fault in unit tests (doesn't affect main program).
6014 - Fix an assert bug where a hidden service provider would fail if
6015 the first hop of his rendezvous circuit was down.
6016 - Hidden service operators now correctly handle version 1 style
6017 INTRODUCE1 cells (nobody generates them still, so not a critical
6019 - If do_hup fails, actually notice.
6020 - Handle more errnos from accept() without closing the listener.
6021 Some OpenBSD machines were closing their listeners because
6022 they ran out of file descriptors.
6023 - Send resolve cells to exit routers that are running a new
6024 enough version of the resolve code to work right.
6025 - Better handling of winsock includes on non-MSV win32 compilers.
6026 - Some people had wrapped their tor client/server in a script
6027 that would restart it whenever it died. This did not play well
6028 with our "shut down if your version is obsolete" code. Now people
6029 don't fetch a new directory if their local cached version is
6031 - Make our autogen.sh work on ksh as well as bash.
6034 - Hibernation: New config option "AccountingMaxKB" lets you
6035 set how many KBytes per month you want to allow your server to
6036 consume. Rather than spreading those bytes out evenly over the
6037 month, we instead hibernate for some of the month and pop up
6038 at a deterministic time, work until the bytes are consumed, then
6039 hibernate again. Config option "MonthlyAccountingStart" lets you
6040 specify which day of the month your billing cycle starts on.
6041 - Control interface: a separate program can now talk to your
6042 client/server over a socket, and get/set config options, receive
6043 notifications of circuits and streams starting/finishing/dying,
6044 bandwidth used, etc. The next step is to get some GUIs working.
6045 Let us know if you want to help out. See doc/control-spec.txt .
6046 - Ship a contrib/tor-control.py as an example script to interact
6047 with the control port.
6048 - "tor --hash-password zzyxz" will output a salted password for
6049 use in authenticating to the control interface.
6050 - New log format in config:
6051 "Log minsev[-maxsev] stdout|stderr|syslog" or
6052 "Log minsev[-maxsev] file /var/foo"
6055 - DirPolicy config option, to let people reject incoming addresses
6056 from their dirserver.
6057 - "tor --list-fingerprint" will list your identity key fingerprint
6059 - Add "pass" target for RedirectExit, to make it easier to break
6060 out of a sequence of RedirectExit rules.
6061 - Clients now generate a TLS cert too, in preparation for having
6062 them act more like real nodes.
6063 - Ship src/win32/ in the tarball, so people can use it to build.
6064 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
6066 - New "router-status" line in directory, to better bind each verified
6067 nickname to its identity key.
6068 - Deprecate unofficial config option abbreviations, and abbreviations
6069 not on the command line.
6070 - Add a pure-C tor-resolve implementation.
6071 - Use getrlimit and friends to ensure we can reach MaxConn (currently
6072 1024) file descriptors.
6074 o Code security improvements, inspired by Ilja:
6075 - Replace sprintf with snprintf. (I think they were all safe, but
6077 - Replace strcpy/strncpy with strlcpy in more places.
6078 - Avoid strcat; use snprintf or strlcat instead.
6079 - snprintf wrapper with consistent (though not C99) overflow behavior.
6082 Changes in version 0.0.9pre4 - 2004-10-17
6083 o Bugfixes on 0.0.9pre3:
6084 - If the server doesn't specify an exit policy, use the real default
6085 exit policy, not reject *:*.
6086 - Ignore fascistfirewall when uploading/downloading hidden service
6087 descriptors, since we go through Tor for those; and when using
6088 an HttpProxy, since we assume it can reach them all.
6089 - When looking for an authoritative dirserver, use only the ones
6090 configured at boot. Don't bother looking in the directory.
6091 - The rest of the fix for get_default_conf_file() on older win32.
6092 - Make 'Routerfile' config option obsolete.
6095 - New 'MyFamily nick1,...' config option for a server to
6096 specify other servers that shouldn't be used in the same circuit
6097 with it. Only believed if nick1 also specifies us.
6098 - New 'NodeFamily nick1,nick2,...' config option for a client to
6099 specify nodes that it doesn't want to use in the same circuit.
6100 - New 'Redirectexit pattern address:port' config option for a
6101 server to redirect exit connections, e.g. to a local squid.
6104 Changes in version 0.0.9pre3 - 2004-10-13
6105 o Bugfixes on 0.0.8.1:
6106 - Better torrc example lines for dirbindaddress and orbindaddress.
6107 - Improved bounds checking on parsed ints (e.g. config options and
6108 the ones we find in directories.)
6109 - Better handling of size_t vs int, so we're more robust on 64
6111 - Fix the rest of the bug where a newly started OR would appear
6112 as unverified even after we've added his fingerprint and hupped
6114 - Fix a bug from 0.0.7: when read() failed on a stream, we would
6115 close it without sending back an end. So 'connection refused'
6116 would simply be ignored and the user would get no response.
6118 o Bugfixes on 0.0.9pre2:
6119 - Serving the cached-on-disk directory to people is bad. We now
6120 provide no directory until we've fetched a fresh one.
6121 - Workaround for bug on windows where cached-directories get crlf
6123 - Make get_default_conf_file() work on older windows too.
6124 - If we write a *:* exit policy line in the descriptor, don't write
6125 any more exit policy lines.
6128 - Use only 0.0.9pre1 and later servers for resolve cells.
6129 - Make the dirservers file obsolete.
6130 - Include a dir-signing-key token in directories to tell the
6131 parsing entity which key is being used to sign.
6132 - Remove the built-in bulky default dirservers string.
6133 - New config option "Dirserver %s:%d [fingerprint]", which can be
6134 repeated as many times as needed. If no dirservers specified,
6135 default to moria1,moria2,tor26.
6136 - Make moria2 advertise a dirport of 80, so people behind firewalls
6137 will be able to get a directory.
6138 - Http proxy support
6139 - Dirservers translate requests for http://%s:%d/x to /x
6140 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
6141 be routed through this host.
6142 - Clients ask for /tor/x rather than /x for new enough dirservers.
6143 This way we can one day coexist peacefully with apache.
6144 - Clients specify a "Host: %s%d" http header, to be compatible
6145 with more proxies, and so running squid on an exit node can work.
6148 Changes in version 0.0.8.1 - 2004-10-13
6150 - Fix a seg fault that can be triggered remotely for Tor
6151 clients/servers with an open dirport.
6152 - Fix a rare assert trigger, where routerinfos for entries in
6153 our cpath would expire while we're building the path.
6154 - Fix a bug in OutboundBindAddress so it (hopefully) works.
6155 - Fix a rare seg fault for people running hidden services on
6156 intermittent connections.
6157 - Fix a bug in parsing opt keywords with objects.
6158 - Fix a stale pointer assert bug when a stream detaches and
6160 - Fix a string format vulnerability (probably not exploitable)
6161 in reporting stats locally.
6162 - Fix an assert trigger: sometimes launching circuits can fail
6163 immediately, e.g. because too many circuits have failed recently.
6164 - Fix a compile warning on 64 bit platforms.
6167 Changes in version 0.0.9pre2 - 2004-10-03
6169 - Make fetching a cached directory work for 64-bit platforms too.
6170 - Make zlib.h a required header, not an optional header.
6173 Changes in version 0.0.9pre1 - 2004-10-01
6175 - Stop using separate defaults for no-config-file and
6176 empty-config-file. Now you have to explicitly turn off SocksPort,
6177 if you don't want it open.
6178 - Fix a bug in OutboundBindAddress so it (hopefully) works.
6179 - Improve man page to mention more of the 0.0.8 features.
6180 - Fix a rare seg fault for people running hidden services on
6181 intermittent connections.
6182 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
6184 - Fix more dns related bugs: send back resolve_failed and end cells
6185 more reliably when the resolve fails, rather than closing the
6186 circuit and then trying to send the cell. Also attach dummy resolve
6187 connections to a circuit *before* calling dns_resolve(), to fix
6188 a bug where cached answers would never be sent in RESOLVED cells.
6189 - When we run out of disk space, or other log writing error, don't
6190 crash. Just stop logging to that log and continue.
6191 - We were starting to daemonize before we opened our logs, so if
6192 there were any problems opening logs, we would complain to stderr,
6193 which wouldn't work, and then mysteriously exit.
6194 - Fix a rare bug where sometimes a verified OR would connect to us
6195 before he'd uploaded his descriptor, which would cause us to
6196 assign conn->nickname as though he's unverified. Now we look through
6197 the fingerprint list to see if he's there.
6198 - Fix a rare assert trigger, where routerinfos for entries in
6199 our cpath would expire while we're building the path.
6202 - Clients can ask dirservers for /dir.z to get a compressed version
6203 of the directory. Only works for servers running 0.0.9, of course.
6204 - Make clients cache directories and use them to seed their router
6205 lists at startup. This means clients have a datadir again.
6206 - Configuration infrastructure support for warning on obsolete
6208 - Respond to content-encoding headers by trying to uncompress as
6210 - Reply with a deflated directory when a client asks for "dir.z".
6211 We could use allow-encodings instead, but allow-encodings isn't
6212 specified in HTTP 1.0.
6213 - Raise the max dns workers from 50 to 100.
6214 - Discourage people from setting their dirfetchpostperiod more often
6215 than once per minute.
6216 - Protect dirservers from overzealous descriptor uploading -- wait
6217 10 seconds after directory gets dirty, before regenerating.
6220 Changes in version 0.0.8 - 2004-08-25
6221 o Port it to SunOS 5.9 / Athena
6224 Changes in version 0.0.8rc2 - 2004-08-20
6225 o Make it compile on cygwin again.
6226 o When picking unverified routers, skip those with low uptime and/or
6227 low bandwidth, depending on what properties you care about.
6230 Changes in version 0.0.8rc1 - 2004-08-18
6231 o Changes from 0.0.7.3:
6233 - Fix assert triggers: if the other side returns an address 0.0.0.0,
6234 don't put it into the client dns cache.
6235 - If a begin failed due to exit policy, but we believe the IP address
6236 should have been allowed, switch that router to exitpolicy reject *:*
6237 until we get our next directory.
6239 - Clients choose nodes proportional to advertised bandwidth.
6240 - Avoid using nodes with low uptime as introduction points.
6241 - Handle servers with dynamic IP addresses: don't replace
6242 options->Address with the resolved one at startup, and
6243 detect our address right before we make a routerinfo each time.
6244 - 'FascistFirewall' option to pick dirservers and ORs on specific
6245 ports; plus 'FirewallPorts' config option to tell FascistFirewall
6246 which ports are open. (Defaults to 80,443)
6247 - Be more aggressive about trying to make circuits when the network
6248 has changed (e.g. when you unsuspend your laptop).
6249 - Check for time skew on http headers; report date in response to
6251 - If the entrynode config line has only one node, don't pick it as
6253 - Add strict{entry|exit}nodes config options. If set to 1, then
6254 we refuse to build circuits that don't include the specified entry
6256 - OutboundBindAddress config option, to bind to a specific
6257 IP address for outgoing connect()s.
6258 - End truncated log entries (e.g. directories) with "[truncated]".
6260 o Patches to 0.0.8preX:
6262 - Patches to compile and run on win32 again (maybe)?
6263 - Fix crash when looking for ~/.torrc with no $HOME set.
6264 - Fix a race bug in the unit tests.
6265 - Handle verified/unverified name collisions better when new
6266 routerinfo's arrive in a directory.
6267 - Sometimes routers were getting entered into the stats before
6268 we'd assigned their identity_digest. Oops.
6269 - Only pick and establish intro points after we've gotten a
6272 - AllowUnverifiedNodes config option to let circuits choose no-name
6273 routers in entry,middle,exit,introduction,rendezvous positions.
6274 Allow middle and rendezvous positions by default.
6275 - Add a man page for tor-resolve.
6278 Changes in version 0.0.7.3 - 2004-08-12
6279 o Stop dnsworkers from triggering an assert failure when you
6280 ask them to resolve the host "".
6283 Changes in version 0.0.8pre3 - 2004-08-09
6284 o Changes from 0.0.7.2:
6285 - Allow multiple ORs with same nickname in routerlist -- now when
6286 people give us one identity key for a nickname, then later
6287 another, we don't constantly complain until the first expires.
6288 - Remember used bandwidth (both in and out), and publish 15-minute
6289 snapshots for the past day into our descriptor.
6290 - You can now fetch $DIRURL/running-routers to get just the
6291 running-routers line, not the whole descriptor list. (But
6292 clients don't use this yet.)
6293 - When people mistakenly use Tor as an http proxy, point them
6294 at the tor-doc.html rather than the INSTALL.
6295 - Remove our mostly unused -- and broken -- hex_encode()
6296 function. Use base16_encode() instead. (Thanks to Timo Lindfors
6297 for pointing out this bug.)
6298 - Rotate onion keys every 12 hours, not every 2 hours, so we have
6299 fewer problems with people using the wrong key.
6300 - Change the default exit policy to reject the default edonkey,
6301 kazaa, gnutella ports.
6302 - Add replace_file() to util.[ch] to handle win32's rename().
6304 o Changes from 0.0.8preX:
6305 - Fix two bugs in saving onion keys to disk when rotating, so
6306 hopefully we'll get fewer people using old onion keys.
6307 - Fix an assert error that was making SocksPolicy not work.
6308 - Be willing to expire routers that have an open dirport -- it's
6309 just the authoritative dirservers we want to not forget.
6310 - Reject tor-resolve requests for .onion addresses early, so we
6311 don't build a whole rendezvous circuit and then fail.
6312 - When you're warning a server that he's unverified, don't cry
6314 - Fix a race condition: don't try to extend onto a connection
6315 that's still handshaking.
6316 - For servers in clique mode, require the conn to be open before
6317 you'll choose it for your path.
6318 - Fix some cosmetic bugs about duplicate mark-for-close, lack of
6319 end relay cell, etc.
6320 - Measure bandwidth capacity over the last 24 hours, not just 12
6321 - Bugfix: authoritative dirservers were making and signing a new
6322 directory for each client, rather than reusing the cached one.
6325 Changes in version 0.0.8pre2 - 2004-08-04
6326 o Changes from 0.0.7.2:
6328 - Check directory signature _before_ you decide whether you're
6329 you're running an obsolete version and should exit.
6330 - Check directory signature _before_ you parse the running-routers
6331 list to decide who's running or verified.
6332 - Bugfixes and features:
6333 - Check return value of fclose while writing to disk, so we don't
6334 end up with broken files when servers run out of disk space.
6335 - Log a warning if the user uses an unsafe socks variant, so people
6336 are more likely to learn about privoxy or socat.
6337 - Dirservers now include RFC1123-style dates in the HTTP headers,
6338 which one day we will use to better detect clock skew.
6340 o Changes from 0.0.8pre1:
6341 - Make it compile without warnings again on win32.
6342 - Log a warning if you're running an unverified server, to let you
6343 know you might want to get it verified.
6344 - Only pick a default nickname if you plan to be a server.
6347 Changes in version 0.0.8pre1 - 2004-07-23
6349 - Made our unit tests compile again on OpenBSD 3.5, and tor
6350 itself compile again on OpenBSD on a sparc64.
6351 - We were neglecting milliseconds when logging on win32, so
6352 everything appeared to happen at the beginning of each second.
6355 - 'Extend' relay cell payloads now include the digest of the
6356 intended next hop's identity key. Now we can verify that we're
6357 extending to the right router, and also extend to routers we
6358 hadn't heard of before.
6361 - Tor nodes can now act as relays (with an advertised ORPort)
6362 without being manually verified by the dirserver operators.
6363 - Uploaded descriptors of unverified routers are now accepted
6364 by the dirservers, and included in the directory.
6365 - Verified routers are listed by nickname in the running-routers
6366 list; unverified routers are listed as "$<fingerprint>".
6367 - We now use hash-of-identity-key in most places rather than
6368 nickname or addr:port, for improved security/flexibility.
6369 - To avoid Sybil attacks, paths still use only verified servers.
6370 But now we have a chance to play around with hybrid approaches.
6371 - Nodes track bandwidth usage to estimate capacity (not used yet).
6372 - ClientOnly option for nodes that never want to become servers.
6373 - Directory caching.
6374 - "AuthoritativeDir 1" option for the official dirservers.
6375 - Now other nodes (clients and servers) will cache the latest
6376 directory they've pulled down.
6377 - They can enable their DirPort to serve it to others.
6378 - Clients will pull down a directory from any node with an open
6379 DirPort, and check the signature/timestamp correctly.
6380 - Authoritative dirservers now fetch directories from other
6381 authdirservers, to stay better synced.
6382 - Running-routers list tells who's down also, along with noting
6383 if they're verified (listed by nickname) or unverified (listed
6385 - Allow dirservers to serve running-router list separately.
6386 This isn't used yet.
6387 - ORs connect-on-demand to other ORs
6388 - If you get an extend cell to an OR you're not connected to,
6389 connect, handshake, and forward the create cell.
6390 - The authoritative dirservers stay connected to everybody,
6391 and everybody stays connected to 0.0.7 servers, but otherwise
6392 clients/servers expire unused connections after 5 minutes.
6393 - When servers get a sigint, they delay 30 seconds (refusing new
6394 connections) then exit. A second sigint causes immediate exit.
6395 - File and name management:
6396 - Look for .torrc if no CONFDIR "torrc" is found.
6397 - If no datadir is defined, then choose, make, and secure ~/.tor
6399 - If torrc not found, exitpolicy reject *:*.
6400 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
6401 - If no nickname is defined, derive default from hostname.
6402 - Rename secret key files, e.g. identity.key -> secret_id_key,
6403 to discourage people from mailing their identity key to tor-ops.
6404 - Refuse to build a circuit before the directory has arrived --
6405 it won't work anyway, since you won't know the right onion keys
6407 - Try other dirservers immediately if the one you try is down. This
6408 should tolerate down dirservers better now.
6409 - Parse tor version numbers so we can do an is-newer-than check
6410 rather than an is-in-the-list check.
6411 - New socks command 'resolve', to let us shim gethostbyname()
6413 - A 'tor_resolve' script to access the socks resolve functionality.
6414 - A new socks-extensions.txt doc file to describe our
6415 interpretation and extensions to the socks protocols.
6416 - Add a ContactInfo option, which gets published in descriptor.
6417 - Publish OR uptime in descriptor (and thus in directory) too.
6418 - Write tor version at the top of each log file
6419 - New docs in the tarball:
6421 - Document that you should proxy your SSL traffic too.
6424 Changes in version 0.0.7.2 - 2004-07-07
6425 o A better fix for the 0.0.0.0 problem, that will hopefully
6426 eliminate the remaining related assertion failures.
6429 Changes in version 0.0.7.1 - 2004-07-04
6430 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
6431 since internally we use 0.0.0.0 to signify "not yet resolved".
6434 Changes in version 0.0.7 - 2004-06-07
6435 o Updated the man page to reflect the new features.
6438 Changes in version 0.0.7rc2 - 2004-06-06
6439 o Changes from 0.0.7rc1:
6440 - Make it build on Win32 again.
6441 o Changes from 0.0.6.2:
6442 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
6446 Changes in version 0.0.7rc1 - 2004-06-02
6448 - On sighup, we were adding another log without removing the first
6449 one. So log messages would get duplicated n times for n sighups.
6450 - Several cases of using a connection after we'd freed it. The
6451 problem was that connections that are pending resolve are in both
6452 the pending_resolve tree, and also the circuit's resolving_streams
6453 list. When you want to remove one, you must remove it from both.
6454 - Fix a double-mark-for-close where an end cell arrived for a
6455 resolving stream, and then the resolve failed.
6456 - Check directory signatures based on name of signer, not on whom
6457 we got the directory from. This will let us cache directories more
6460 - Crank up some of our constants to handle more users.
6463 Changes in version 0.0.7pre1 - 2004-06-02
6464 o Fixes for crashes and other obnoxious bugs:
6465 - Fix an epipe bug: sometimes when directory connections failed
6466 to connect, we would give them a chance to flush before closing
6468 - When we detached from a circuit because of resolvefailed, we
6469 would immediately try the same circuit twice more, and then
6470 give up on the resolve thinking we'd tried three different
6472 - Limit the number of intro circuits we'll attempt to build for a
6473 hidden service per 15-minute period.
6474 - Check recommended-software string *early*, before actually parsing
6475 the directory. Thus we can detect an obsolete version and exit,
6476 even if the new directory format doesn't parse.
6477 o Fixes for security bugs:
6478 - Remember which nodes are dirservers when you startup, and if a
6479 random OR enables his dirport, don't automatically assume he's
6480 a trusted dirserver.
6482 - Directory connections were asking the wrong poll socket to
6483 start writing, and not asking themselves to start writing.
6484 - When we detached from a circuit because we sent a begin but
6485 didn't get a connected, we would use it again the first time;
6486 but after that we would correctly switch to a different one.
6487 - Stop warning when the first onion decrypt attempt fails; they
6488 will sometimes legitimately fail now that we rotate keys.
6489 - Override unaligned-access-ok check when $host_cpu is ia64 or
6490 arm. Apparently they allow it but the kernel whines.
6491 - Dirservers try to reconnect periodically too, in case connections
6493 - Fix some memory leaks in directory servers.
6494 - Allow backslash in Win32 filenames.
6495 - Made Tor build complain-free on FreeBSD, hopefully without
6496 breaking other BSD builds. We'll see.
6498 - Doxygen markup on all functions and global variables.
6499 - Make directory functions update routerlist, not replace it. So
6500 now directory disagreements are not so critical a problem.
6501 - Remove the upper limit on number of descriptors in a dirserver's
6502 directory (not that we were anywhere close).
6503 - Allow multiple logfiles at different severity ranges.
6504 - Allow *BindAddress to specify ":port" rather than setting *Port
6505 separately. Allow multiple instances of each BindAddress config
6506 option, so you can bind to multiple interfaces if you want.
6507 - Allow multiple exit policy lines, which are processed in order.
6508 Now we don't need that huge line with all the commas in it.
6509 - Enable accept/reject policies on SOCKS connections, so you can bind
6510 to 0.0.0.0 but still control who can use your OP.
6513 Changes in version 0.0.6.2 - 2004-05-16
6514 o Our integrity-checking digest was checking only the most recent cell,
6515 not the previous cells like we'd thought.
6516 Thanks to Stefan Mark for finding the flaw!
6519 Changes in version 0.0.6.1 - 2004-05-06
6520 o Fix two bugs in our AES counter-mode implementation (this affected
6521 onion-level stream encryption, but not TLS-level). It turns
6522 out we were doing something much more akin to a 16-character
6523 polyalphabetic cipher. Oops.
6524 Thanks to Stefan Mark for finding the flaw!
6525 o Retire moria3 as a directory server, and add tor26 as a directory
6529 Changes in version 0.0.6 - 2004-05-02
6533 Changes in version 0.0.6rc4 - 2004-05-01
6534 o Update the built-in dirservers list to use the new directory format
6535 o Fix a rare seg fault: if a node offering a hidden service attempts
6536 to build a circuit to Alice's rendezvous point and fails before it
6537 reaches the last hop, it retries with a different circuit, but
6539 o Handle windows socket errors correctly.
6542 Changes in version 0.0.6rc3 - 2004-04-28
6543 o Don't expire non-general excess circuits (if we had enough
6544 circuits open, we were expiring rendezvous circuits -- even
6545 when they had a stream attached. oops.)
6546 o Fetch randomness from /dev/urandom better (not via fopen/fread)
6547 o Better debugging for tls errors
6548 o Some versions of openssl have an SSL_pending function that erroneously
6549 returns bytes when there is a non-application record pending.
6550 o Set Content-Type on the directory and hidserv descriptor.
6551 o Remove IVs from cipher code, since AES-ctr has none.
6552 o Win32 fixes. Tor now compiles on win32 with no warnings/errors.
6553 o We were using an array of length zero in a few places.
6554 o win32's gethostbyname can't resolve an IP to an IP.
6555 o win32's close can't close a socket.
6558 Changes in version 0.0.6rc2 - 2004-04-26
6559 o Fix a bug where we were closing tls connections intermittently.
6560 It turns out openssl keeps its errors around -- so if an error
6561 happens, and you don't ask about it, and then another openssl
6562 operation happens and succeeds, and you ask if there was an error,
6563 it tells you about the first error. Fun fun.
6564 o Fix a bug that's been lurking since 27 may 03 (!)
6565 When passing back a destroy cell, we would use the wrong circ id.
6566 'Mostly harmless', but still worth fixing.
6567 o Since we don't support truncateds much, don't bother sending them;
6568 just close the circ.
6569 o check for <machine/limits.h> so we build on NetBSD again (I hope).
6570 o don't crash if a conn that sent a begin has suddenly lost its circuit
6571 (this was quite rare).
6574 Changes in version 0.0.6rc1 - 2004-04-25
6575 o We now rotate link (tls context) keys and onion keys.
6576 o CREATE cells now include oaep padding, so you can tell
6577 if you decrypted them correctly.
6578 o Add bandwidthburst to server descriptor.
6579 o Directories now say which dirserver signed them.
6580 o Use a tor_assert macro that logs failed assertions too.
6583 Changes in version 0.0.6pre5 - 2004-04-18
6584 o changes from 0.0.6pre4:
6585 - make tor build on broken freebsd 5.2 installs
6586 - fix a failed assert when you try an intro point, get a nack, and try
6587 a second one and it works.
6588 - when alice uses a port that the hidden service doesn't accept,
6589 it now sends back an end cell (denied by exit policy). otherwise
6590 alice would just have to wait to time out.
6591 - fix another rare bug: when we had tried all the intro
6592 points for a hidden service, we fetched the descriptor
6593 again, but we left our introcirc thinking it had already
6594 sent an intro, so it kept waiting for a response...
6595 - bugfix: when you sleep your hidden-service laptop, as soon
6596 as it wakes up it tries to upload a service descriptor, but
6597 socketpair fails for some reason (localhost not up yet?).
6598 now we simply give up on that upload, and we'll try again later.
6599 i'd still like to find the bug though.
6600 - if an intro circ waiting for an ack dies before getting one, then
6602 - we were reusing stale service descriptors and refetching usable
6606 Changes in version 0.0.6pre4 - 2004-04-14
6607 o changes from 0.0.6pre3:
6608 - when bob fails to connect to the rendezvous point, and his
6609 circ didn't fail because of the rendezvous point itself, then
6610 he retries a couple of times
6611 - we expire introduction and rendezvous circs more thoroughly
6612 (sometimes they were hanging around forever)
6613 - we expire unattached rendezvous streams that have been around
6614 too long (they were sticking around forever).
6615 - fix a measly fencepost error that was crashing everybody with
6619 Changes in version 0.0.6pre3 - 2004-04-14
6620 o changes from 0.0.6pre2:
6621 - make hup work again
6622 - fix some memory leaks for dirservers
6623 - allow more skew in rendezvous descriptor timestamps, to help
6624 handle people like blanu who don't know what time it is
6625 - normal circs are 3 hops, but some rend/intro circs are 4, if
6626 the initiator doesn't get to choose the last hop
6627 - send acks for introductions, so alice can know whether to try
6629 - bob publishes intro points more correctly
6630 o changes from 0.0.5:
6631 - fix an assert trigger that's been plaguing us since the days
6632 of 0.0.2prexx (thanks weasel!)
6633 - retry stream correctly when we fail to connect because of
6634 exit-policy-reject (should try another) or can't-resolve-address
6635 (also should try another, because dns on random internet servers
6637 - when we hup a dirserver and we've *removed* a server from the
6638 approved-routers list, now we remove that server from the
6639 in-memory directories too
6642 Changes in version 0.0.6pre2 - 2004-04-08
6643 o We fixed our base32 implementation. Now it works on all architectures.
6646 Changes in version 0.0.6pre1 - 2004-04-08
6648 - Hidden services and rendezvous points are implemented. Go to
6649 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
6650 hidden services. (This only works via a socks4a proxy such as
6651 Privoxy, and currently it's quite slow.)
6654 Changes in version 0.0.5 - 2004-03-30
6658 Changes in version 0.0.5rc3 - 2004-03-29
6659 o Install torrc as torrc.sample -- we no longer clobber your
6661 o Re-enable recommendedversion checking (we broke it in rc2, oops)
6662 o Add in a 'notice' log level for things the operator should hear
6663 but that aren't warnings
6666 Changes in version 0.0.5rc2 - 2004-03-29
6667 o Hold socks connection open until reply is flushed (if possible)
6668 o Make exit nodes resolve IPs to IPs immediately, rather than asking
6669 the dns farm to do it.
6670 o Fix c99 aliasing warnings in rephist.c
6671 o Don't include server descriptors that are older than 24 hours in the
6673 o Give socks 'reject' replies their whole 15s to attempt to flush,
6674 rather than seeing the 60s timeout and assuming the flush had failed.
6675 o Clean automake droppings from the cvs repository
6678 Changes in version 0.0.5rc1 - 2004-03-28
6679 o Fix mangled-state bug in directory fetching (was causing sigpipes).
6680 o Only build circuits after we've fetched the directory: clients were
6681 using only the directory servers before they'd fetched a directory.
6682 This also means longer startup time; so it goes.
6683 o Fix an assert trigger where an OP would fail to handshake, and we'd
6684 expect it to have a nickname.
6685 o Work around a tsocks bug: do a socks reject when AP connection dies
6686 early, else tsocks goes into an infinite loop.
6689 Changes in version 0.0.4 - 2004-03-26
6690 o When connecting to a dirserver or OR and the network is down,
6694 Changes in version 0.0.3 - 2004-03-26
6695 o Warn and fail if server chose a nickname with illegal characters
6696 o Port to Solaris and Sparc:
6697 - include missing header fcntl.h
6698 - have autoconf find -lsocket -lnsl automatically
6699 - deal with hardware word alignment
6700 - make uname() work (solaris has a different return convention)
6701 - switch from using signal() to sigaction()
6702 o Preliminary work on reputation system:
6703 - Keep statistics on success/fail of connect attempts; they're published
6704 by kill -USR1 currently.
6705 - Add a RunTesting option to try to learn link state by creating test
6706 circuits, even when SocksPort is off.
6707 - Remove unused open circuits when there are too many.
6710 Changes in version 0.0.2 - 2004-03-19
6711 - Include strlcpy and strlcat for safer string ops
6712 - define INADDR_NONE so we compile (but still not run) on solaris
6715 Changes in version 0.0.2pre27 - 2004-03-14
6717 - Allow internal tor networks (we were rejecting internal IPs,
6718 now we allow them if they're set explicitly).
6719 - And fix a few endian issues.
6722 Changes in version 0.0.2pre26 - 2004-03-14
6724 - If a stream times out after 15s without a connected cell, don't
6725 try that circuit again: try a new one.
6726 - Retry streams at most 4 times. Then give up.
6727 - When a dirserver gets a descriptor from an unknown router, it
6728 logs its fingerprint (so the dirserver operator can choose to
6729 accept it even without mail from the server operator).
6730 - Inform unapproved servers when we reject their descriptors.
6731 - Make tor build on Windows again. It works as a client, who knows
6733 - Clearer instructions in the torrc for how to set up a server.
6734 - Be more efficient about reading fd's when our global token bucket
6735 (used for rate limiting) becomes empty.
6737 - Stop asserting that computers always go forward in time. It's
6739 - When we sent a cell (e.g. destroy) and then marked an OR connection
6740 expired, we might close it before finishing a flush if the other
6741 side isn't reading right then.
6742 - Don't allow dirservers to start if they haven't defined
6744 - We were caching transient dns failures. Oops.
6745 - Prevent servers from publishing an internal IP as their address.
6746 - Address a strcat vulnerability in circuit.c
6749 Changes in version 0.0.2pre25 - 2004-03-04
6751 - Put the OR's IP in its router descriptor, not its fqdn. That way
6752 we'll stop being stalled by gethostbyname for nodes with flaky dns,
6755 - If the user typed in an address that didn't resolve, the server
6759 Changes in version 0.0.2pre24 - 2004-03-03
6761 - Fix an assertion failure in dns.c, where we were trying to dequeue
6762 a pending dns resolve even if it wasn't pending
6763 - Fix a spurious socks5 warning about still trying to write after the
6764 connection is finished.
6765 - Hold certain marked_for_close connections open until they're finished
6766 flushing, rather than losing bytes by closing them too early.
6767 - Correctly report the reason for ending a stream
6768 - Remove some duplicate calls to connection_mark_for_close
6769 - Put switch_id and start_daemon earlier in the boot sequence, so it
6770 will actually try to chdir() to options.DataDirectory
6771 - Make 'make test' exit(1) if a test fails; fix some unit tests
6772 - Make tor fail when you use a config option it doesn't know about,
6773 rather than warn and continue.
6774 - Make --version work
6775 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
6778 Changes in version 0.0.2pre23 - 2004-02-29
6780 - Print a statement when the first circ is finished, so the user
6782 - If a relay cell is unrecognized at the end of the circuit,
6783 send back a destroy. (So attacks to mutate cells are more
6785 - New config option 'excludenodes' to avoid certain nodes for circuits.
6786 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
6787 so you can collect coredumps there.
6789 - Fix a bug in tls flushing where sometimes data got wedged and
6790 didn't flush until more data got sent. Hopefully this bug was
6791 a big factor in the random delays we were seeing.
6792 - Make 'connected' cells include the resolved IP, so the client
6793 dns cache actually gets populated.
6794 - Disallow changing from ORPort=0 to ORPort>0 on hup.
6795 - When we time-out on a stream and detach from the circuit, send an
6796 end cell down it first.
6797 - Only warn about an unknown router (in exitnodes, entrynodes,
6798 excludenodes) after we've fetched a directory.
6801 Changes in version 0.0.2pre22 - 2004-02-26
6803 - Servers publish less revealing uname information in descriptors.
6804 - More memory tracking and assertions, to crash more usefully when
6806 - If the default torrc isn't there, just use some default defaults.
6807 Plus provide an internal dirservers file if they don't have one.
6808 - When the user tries to use Tor as an http proxy, give them an http
6809 501 failure explaining that we're a socks proxy.
6810 - Dump a new router.desc on hup, to help confused people who change
6811 their exit policies and then wonder why router.desc doesn't reflect
6813 - Clean up the generic tor.sh init script that we ship with.
6815 - If the exit stream is pending on the resolve, and a destroy arrives,
6816 then the stream wasn't getting removed from the pending list. I
6817 think this was the one causing recent server crashes.
6818 - Use a more robust poll on OSX 10.3, since their poll is flaky.
6819 - When it couldn't resolve any dirservers, it was useless from then on.
6820 Now it reloads the RouterFile (or default dirservers) if it has no
6822 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
6823 many users don't even *have* a /usr/local/sbin/.
6826 Changes in version 0.0.2pre21 - 2004-02-18
6828 - There's a ChangeLog file that actually reflects the changelog.
6829 - There's a 'torify' wrapper script, with an accompanying
6830 tor-tsocks.conf, that simplifies the process of using tsocks for
6831 tor. It even has a man page.
6832 - The tor binary gets installed to sbin rather than bin now.
6833 - Retry streams where the connected cell hasn't arrived in 15 seconds
6834 - Clean up exit policy handling -- get the default out of the torrc,
6835 so we can update it without forcing each server operator to fix
6837 - Allow imaps and pop3s in default exit policy
6839 - Prevent picking middleman nodes as the last node in the circuit
6842 Changes in version 0.0.2pre20 - 2004-01-30
6844 - We now have a deb package, and it's in debian unstable. Go to
6846 - I've split the TotalBandwidth option into BandwidthRate (how many
6847 bytes per second you want to allow, long-term) and
6848 BandwidthBurst (how many bytes you will allow at once before the cap
6849 kicks in). This better token bucket approach lets you, say, set
6850 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
6851 performance while not exceeding your monthly bandwidth quota.
6852 - Push out a tls record's worth of data once you've got it, rather
6853 than waiting until you've read everything waiting to be read. This
6854 may improve performance by pipelining better. We'll see.
6855 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
6856 from failed circuits (if they haven't been connected yet) and attach
6858 - Expire old streams that haven't managed to connect. Some day we'll
6859 have them reattach to new circuits instead.
6862 - Fix several memory leaks that were causing servers to become bloated
6864 - Fix a few very rare assert triggers. A few more remain.
6865 - Setuid to User _before_ complaining about running as root.
6868 Changes in version 0.0.2pre19 - 2004-01-07
6870 - Fix deadlock condition in dns farm. We were telling a child to die by
6871 closing the parent's file descriptor to him. But newer children were
6872 inheriting the open file descriptor from the parent, and since they
6873 weren't closing it, the socket never closed, so the child never read
6874 eof, so he never knew to exit. Similarly, dns workers were holding
6875 open other sockets, leading to all sorts of chaos.
6876 - New cleaner daemon() code for forking and backgrounding.
6877 - If you log to a file, it now prints an entry at the top of the
6878 logfile so you know it's working.
6879 - The onionskin challenge length was 30 bytes longer than necessary.
6880 - Started to patch up the spec so it's not quite so out of date.
6883 Changes in version 0.0.2pre18 - 2004-01-02
6885 - Fix endian issues with the 'integrity' field in the relay header.
6886 - Fix a potential bug where connections in state
6887 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
6890 Changes in version 0.0.2pre17 - 2003-12-30
6892 - Made --debuglogfile (or any second log file, actually) work.
6893 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
6894 adversary could force us into an infinite loop.
6897 - Each onionskin handshake now includes a hash of the computed key,
6898 to prove the server's identity and help perfect forward secrecy.
6899 - Changed cell size from 256 to 512 bytes (working toward compatibility
6901 - Changed cell length to 2 bytes, and moved it to the relay header.
6902 - Implemented end-to-end integrity checking for the payloads of
6904 - Separated streamid from 'recognized' (otherwise circuits will get
6905 messed up when we try to have streams exit from the middle). We
6906 use the integrity-checking to confirm that a cell is addressed to
6908 - Randomize the initial circid and streamid values, so an adversary who
6909 breaks into a node can't learn how many circuits or streams have
6913 Changes in version 0.0.2pre16 - 2003-12-14
6915 - Fixed a bug that made HUP trigger an assert
6916 - Fixed a bug where a circuit that immediately failed wasn't being
6917 counted as a failed circuit in counting retries.
6920 - Now we close the circuit when we get a truncated cell: otherwise we're
6921 open to an anonymity attack where a bad node in the path truncates
6922 the circuit and then we open streams at him.
6923 - Add port ranges to exit policies
6924 - Add a conservative default exit policy
6925 - Warn if you're running tor as root
6926 - on HUP, retry OR connections and close/rebind listeners
6927 - options.EntryNodes: try these nodes first when picking the first node
6928 - options.ExitNodes: if your best choices happen to include any of
6929 your preferred exit nodes, you choose among just those preferred
6931 - options.ExcludedNodes: nodes that are never picked in path building
6934 Changes in version 0.0.2pre15 - 2003-12-03
6935 o Robustness and bugfixes:
6936 - Sometimes clients would cache incorrect DNS resolves, which would
6937 really screw things up.
6938 - An OP that goes offline would slowly leak all its sockets and stop
6940 - A wide variety of bugfixes in exit node selection, exit policy
6941 handling, and processing pending streams when a new circuit is
6943 - Pick nodes for a path only from those the directory says are up
6944 - Choose randomly from all running dirservers, not always the first one
6945 - Increase allowed http header size for directory fetch.
6946 - Stop writing to stderr (if we're daemonized it will be closed).
6947 - Enable -g always, so cores will be more useful to me.
6948 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
6951 - Wrote a man page. It lists commonly used options.
6954 - Change default loglevel to warn.
6955 - Make PidFile default to null rather than littering in your CWD.
6956 - OnionRouter config option is now obsolete. Instead it just checks
6958 - Moved to a single unified torrc file for both clients and servers.
6961 Changes in version 0.0.2pre14 - 2003-11-29
6962 o Robustness and bugfixes:
6963 - Force the admin to make the DataDirectory himself
6964 - to get ownership/permissions right
6965 - so clients no longer make a DataDirectory and then never use it
6966 - fix bug where a client who was offline for 45 minutes would never
6967 pull down a directory again
6968 - fix (or at least hide really well) the dns assert bug that was
6969 causing server crashes
6970 - warnings and improved robustness wrt clockskew for certs
6971 - use the native daemon(3) to daemonize, when available
6972 - exit if bind() fails
6973 - exit if neither socksport nor orport is defined
6974 - include our own tor_timegm (Win32 doesn't have its own)
6975 - bugfix for win32 with lots of connections
6976 - fix minor bias in PRNG
6977 - make dirserver more robust to corrupt cached directory
6980 - Wrote the design document (woo)
6982 o Circuit building and exit policies:
6983 - Circuits no longer try to use nodes that the directory has told them
6985 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
6986 bitcounts (18.0.0.0/8).
6987 - Make AP connections standby for a circuit if no suitable circuit
6988 exists, rather than failing
6989 - Circuits choose exit node based on addr/port, exit policies, and
6990 which AP connections are standing by
6991 - Bump min pathlen from 2 to 3
6992 - Relay end cells have a payload to describe why the stream ended.
6993 - If the stream failed because of exit policy, try again with a new
6995 - Clients have a dns cache to remember resolved addresses.
6996 - Notice more quickly when we have no working circuits
6999 - APPort is now called SocksPort
7000 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
7002 - RecommendedVersions is now a config variable rather than
7003 hardcoded (for dirservers)
7004 - Reloads config on HUP
7005 - Usage info on -h or --help
7006 - If you set User and Group config vars, it'll setu/gid to them.
7009 Changes in version 0.0.2pre13 - 2003-10-19
7010 o General stability:
7011 - SSL_write no longer fails when it returns WANTWRITE and the number
7012 of bytes in the buf has changed by the next SSL_write call.
7013 - Fix segfault fetching directory when network is down
7014 - Fix a variety of minor memory leaks
7015 - Dirservers reload the fingerprints file on HUP, so I don't have
7016 to take down the network when I approve a new router
7017 - Default server config file has explicit Address line to specify fqdn
7020 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
7021 - Make listener connections not ever alloc bufs
7023 o Autoconf improvements:
7024 - don't clobber an external CFLAGS in ./configure
7025 - Make install now works
7026 - create var/lib/tor on make install
7027 - autocreate a tor.sh initscript to help distribs
7028 - autocreate the torrc and sample-server-torrc with correct paths
7030 o Log files and Daemonizing now work:
7031 - If --DebugLogFile is specified, log to it at -l debug
7032 - If --LogFile is specified, use it instead of commandline
7033 - If --RunAsDaemon is set, tor forks and backgrounds on startup