1 Changes in version 0.1.1.9-alpha - 2005-11-15
2 o Usability improvements:
3 - Start calling it FooListenAddress rather than FooBindAddress,
4 since few of our users know what it means to bind an address
6 - Reduce clutter in server logs. We're going to try to make
7 them actually usable now. New config option ProtocolWarnings that
8 lets you hear about how _other Tors_ are breaking the protocol. Off
10 - Divide log messages into logging domains. Once we put some sort
11 of interface on this, it will let people looking at more verbose
12 log levels specify the topics they want to hear more about.
13 - Make directory servers return better http 404 error messages
14 instead of a generic "Servers unavailable".
15 - Check for even more Windows version flags when writing the platform
16 string in server descriptors, and note any we don't recognize.
17 - Clean up more of the OpenSSL memory when exiting, so we can detect
19 - Make directory authorities be non-versioning, non-naming by
20 default. Now we can add new directory servers without requiring
21 their operators to pay close attention.
22 - When logging via syslog, include the pid whenever we provide
23 a log entry. Suggested by Todd Fries.
25 o Performance improvements:
26 - Directory servers now silently throw away new descriptors that
27 haven't changed much if the timestamps are similar. We do this to
28 tolerate older Tor servers that upload a new descriptor every 15
29 minutes. (It seemed like a good idea at the time.)
30 - Inline bottleneck smartlist functions; use fast versions by default.
31 - Add a "Map from digest to void*" abstraction digestmap_t so we
32 can do less hex encoding/decoding. Use it in router_get_by_digest()
33 to resolve a performance bottleneck.
34 - Allow tor_gzip_uncompress to extract as much as possible from
35 truncated compressed data. Try to extract as many
36 descriptors as possible from truncated http responses (when
37 DIR_PURPOSE_FETCH_ROUTERDESC).
38 - Make circ->onionskin a pointer, not a static array. moria2 was using
39 125000 circuit_t's after it had been up for a few weeks, which
40 translates to 20+ megs of wasted space.
41 - The private half of our EDH handshake keys are now chosen out
42 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
44 o Security improvements:
45 - Start making directory caches retain old routerinfos, so soon
46 clients can start asking by digest of descriptor rather than by
47 fingerprint of server.
48 - Add half our entropy from RAND_poll in OpenSSL. This knows how
49 to use egd (if present), openbsd weirdness (if present), vms/os2
50 weirdness (if we ever port there), and more in the future.
52 o Bugfixes on 0.1.0.x:
53 - Do round-robin writes of at most 16 kB per write. This might be
54 more fair on loaded Tor servers, and it might resolve our Windows
55 crash bug. It might also slow things down.
56 - Our TLS handshakes were generating a single public/private
57 keypair for the TLS context, rather than making a new one for
58 each new connections. Oops. (But we were still rotating them
59 periodically, so it's not so bad.)
60 - When we were cannibalizing a circuit with a particular exit
61 node in mind, we weren't checking to see if that exit node was
62 already present earlier in the circuit. Oops.
63 - When a Tor server's IP changes (e.g. from a dyndns address),
64 upload a new descriptor so clients will learn too.
65 - Really busy servers were keeping enough circuits open on stable
66 connections that they were wrapping around the circuit_id
67 space. (It's only two bytes.) This exposed a bug where we would
68 feel free to reuse a circuit_id even if it still exists but has
69 been marked for close. Try to fix this bug. Some bug remains.
70 - If we would close a stream early (e.g. it asks for a .exit that
71 we know would refuse it) but the LeaveStreamsUnattached config
72 option is set by the controller, then don't close it.
74 o Bugfixes on 0.1.1.8-alpha:
75 - Fix a big pile of memory leaks, some of them serious.
76 - Do not try to download a routerdesc if we would immediately reject
78 - Resume inserting a newline between all router descriptors when
79 generating (old style) signed directories, since our spec says
81 - When providing content-type application/octet-stream for
82 server descriptors using .z, we were leaving out the
83 content-encoding header. Oops. (Everything tolerated this just
84 fine, but that doesn't mean we need to be part of the problem.)
85 - Fix a potential seg fault in getconf and getinfo using version 1
86 of the controller protocol.
87 - Avoid crash: do not check whether DirPort is reachable when we
88 are suppressing it because of hibernation.
89 - Make --hash-password not crash on exit.
92 Changes in version 0.1.1.8-alpha - 2005-10-07
93 o New features (major):
94 - Clients don't download or use the directory anymore. Now they
95 download and use network-statuses from the trusted dirservers,
96 and fetch individual server descriptors as needed from mirrors.
97 See dir-spec.txt for all the gory details.
98 - Be more conservative about whether to advertise our DirPort.
99 The main change is to not advertise if we're running at capacity
100 and either a) we could hibernate or b) our capacity is low and
101 we're using a default DirPort.
102 - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
104 o New features (minor):
105 - Try to be smart about when to retry network-status and
106 server-descriptor fetches. Still needs some tuning.
107 - Stop parsing, storing, or using running-routers output (but
108 mirrors still cache and serve it).
109 - Consider a threshold of versioning dirservers (dirservers who have
110 an opinion about which Tor versions are still recommended) before
111 deciding whether to warn the user that he's obsolete.
112 - Dirservers can now reject/invalidate by key and IP, with the
113 config options "AuthDirInvalid" and "AuthDirReject". This is
114 useful since currently we automatically list servers as running
115 and usable even if we know they're jerks.
116 - Provide dire warnings to any users who set DirServer; move it out
117 of torrc.sample and into torrc.complete.
118 - Add MyFamily to torrc.sample in the server section.
119 - Add nicknames to the DirServer line, so we can refer to them
120 without requiring all our users to memorize their IP addresses.
121 - When we get an EOF or a timeout on a directory connection, note
122 how many bytes of serverdesc we are dropping. This will help
123 us determine whether it is smart to parse incomplete serverdesc
125 - Add a new function to "change pseudonyms" -- that is, to stop
126 using any currently-dirty circuits for new streams, so we don't
127 link new actions to old actions. Currently it's only called on
128 HUP (or SIGNAL RELOAD).
129 - On sighup, if UseHelperNodes changed to 1, use new circuits.
130 - Start using RAND_bytes rather than RAND_pseudo_bytes from
131 OpenSSL. Also, reseed our entropy every hour, not just at
132 startup. And entropy in 512-bit chunks, not 160-bit chunks.
134 o Fixes on 0.1.1.7-alpha:
135 - Nobody ever implemented EVENT_ADDRMAP for control protocol
136 version 0, so don't let version 0 controllers ask for it.
137 - If you requested something with too many newlines via the
138 v1 controller protocol, you could crash tor.
139 - Fix a number of memory leaks, including some pretty serious ones.
140 - Re-enable DirPort testing again, so Tor servers will be willing
141 to advertise their DirPort if it's reachable.
142 - On TLS handshake, only check the other router's nickname against
143 its expected nickname if is_named is set.
145 o Fixes forward-ported from 0.1.0.15:
146 - Don't crash when we don't have any spare file descriptors and we
147 try to spawn a dns or cpu worker.
148 - Make the numbers in read-history and write-history into uint64s,
149 so they don't overflow and publish negatives in the descriptor.
152 - For the OS X package's modified privoxy config file, comment
153 out the "logfile" line so we don't log everything passed
155 - We were whining about using socks4 or socks5-with-local-lookup
156 even when it's an IP in the "virtual" range we designed exactly
158 - We were leaking some memory every time the client changes IPs.
159 - Never call free() on tor_malloc()d memory. This will help us
160 use dmalloc to detect memory leaks.
161 - Check for named servers when looking them up by nickname;
162 warn when we'recalling a non-named server by its nickname;
163 don't warn twice about the same name.
164 - Try to list MyFamily elements by key, not by nickname, and warn
165 if we've not heard of the server.
166 - Make windows platform detection (uname equivalent) smarter.
167 - It turns out sparc64 doesn't like unaligned access either.
170 Changes in version 0.1.1.7-alpha - 2005-09-14
171 o Fixes on 0.1.1.6-alpha:
172 - Exit servers were crashing when people asked them to make a
173 connection to an address not in their exit policy.
174 - Looking up a non-existent stream for a v1 control connection would
176 - Fix a seg fault if we ask a dirserver for a descriptor by
177 fingerprint but he doesn't know about him.
178 - SETCONF was appending items to linelists, not clearing them.
179 - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
180 out and refuse the setconf if it would fail.
181 - Downgrade the dirserver log messages when whining about
185 - Add Peter Palfrader's check-tor script to tor/contrib/
186 It lets you easily check whether a given server (referenced by
187 nickname) is reachable by you.
188 - Numerous changes to move towards client-side v2 directories. Not
192 - If the user gave tor an odd number of command-line arguments,
193 we were silently ignoring the last one. Now we complain and fail.
194 [This wins the oldest-bug prize -- this bug has been present since
195 November 2002, as released in Tor 0.0.0.]
196 - Do not use unaligned memory access on alpha, mips, or mipsel.
197 It *works*, but is very slow, so we treat them as if it doesn't.
198 - Retry directory requests if we fail to get an answer we like
199 from a given dirserver (we were retrying before, but only if
201 - When writing the RecommendedVersions line, sort them first.
202 - When the client asked for a rendezvous port that the hidden
203 service didn't want to provide, we were sending an IP address
204 back along with the end cell. Fortunately, it was zero. But stop
206 - Correct "your server is reachable" log entries to indicate that
207 it was self-testing that told us so.
210 Changes in version 0.1.1.6-alpha - 2005-09-09
211 o Fixes on 0.1.1.5-alpha:
212 - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
213 - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
214 - Fix bug with tor_memmem finding a match at the end of the string.
215 - Make unit tests run without segfaulting.
216 - Resolve some solaris x86 compile warnings.
217 - Handle duplicate lines in approved-routers files without warning.
218 - Fix bug where as soon as a server refused any requests due to his
219 exit policy (e.g. when we ask for localhost and he tells us that's
220 127.0.0.1 and he won't do it), we decided he wasn't obeying his
221 exit policy and stopped using him for any exits.
222 - Only do openssl hardware accelerator stuff if openssl version is
225 o New controller features/fixes:
226 - Add a "RESETCONF" command so you can set config options like
227 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
228 a config option in the torrc with no value, then it clears it
229 entirely (rather than setting it to its default).
230 - Add a "GETINFO config-file" to tell us where torrc is.
231 - Avoid sending blank lines when GETINFO replies should be empty.
232 - Add a QUIT command for the controller (for using it manually).
233 - Fix a bug in SAVECONF that was adding default dirservers and
234 other redundant entries to the torrc file.
236 o Start on the new directory design:
237 - Generate, publish, cache, serve new network-status format.
238 - Publish individual descriptors (by fingerprint, by "all", and by
240 - Publish client and server recommended versions separately.
241 - Allow tor_gzip_uncompress() to handle multiple concatenated
242 compressed strings. Serve compressed groups of router
243 descriptors. The compression logic here could be more
245 - Distinguish v1 authorities (all currently trusted directories)
246 from v2 authorities (all trusted directories).
247 - Change DirServers config line to note which dirs are v1 authorities.
248 - Add configuration option "V1AuthoritativeDirectory 1" which
249 moria1, moria2, and tor26 should set.
250 - Remove option when getting directory cache to see whether they
251 support running-routers; they all do now. Replace it with one
252 to see whether caches support v2 stuff.
255 - Dirservers now do their own external reachability testing of each
256 Tor server, and only list them as running if they've been found to
257 be reachable. We also send back warnings to the server's logs if
258 it uploads a descriptor that we already believe is unreachable.
259 - Implement exit enclaves: if we know an IP address for the
260 destination, and there's a running Tor server at that address
261 which allows exit to the destination, then extend the circuit to
262 that exit first. This provides end-to-end encryption and end-to-end
263 authentication. Also, if the user wants a .exit address or enclave,
264 use 4 hops rather than 3, and cannibalize a general circ for it
266 - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
267 controller. Also, rotate dns and cpu workers if the controller
268 changes options that will affect them; and initialize the dns
269 worker cache tree whether or not we start out as a server.
270 - Only upload a new server descriptor when options change, 18
271 hours have passed, uptime is reset, or bandwidth changes a lot.
272 - Check [X-]Forwarded-For headers in HTTP requests when generating
273 log messages. This lets people run dirservers (and caches) behind
274 Apache but still know which IP addresses are causing warnings.
276 o Config option changes:
277 - Replace (Fascist)Firewall* config options with a new
278 ReachableAddresses option that understands address policies.
279 For example, "ReachableAddresses *:80,*:443"
280 - Get rid of IgnoreVersion undocumented config option, and make us
281 only warn, never exit, when we're running an obsolete version.
282 - Make MonthlyAccountingStart config option truly obsolete now.
285 - Reject ports 465 and 587 in the default exit policy, since
286 people have started using them for spam too.
287 - It turns out we couldn't bootstrap a network since we added
288 reachability detection in 0.1.0.1-rc. Good thing the Tor network
289 has never gone down. Add an AssumeReachable config option to let
290 servers and dirservers bootstrap. When we're trying to build a
291 high-uptime or high-bandwidth circuit but there aren't enough
292 suitable servers, try being less picky rather than simply failing.
293 - Our logic to decide if the OR we connected to was the right guy
294 was brittle and maybe open to a mitm for unverified routers.
295 - We weren't cannibalizing circuits correctly for
296 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
297 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
298 build those from scratch. This should make hidden services faster.
299 - Predict required circuits better, with an eye toward making hidden
300 services faster on the service end.
301 - Retry streams if the exit node sends back a 'misc' failure. This
302 should result in fewer random failures. Also, after failing
303 from resolve failed or misc, reset the num failures, so we give
304 it a fair shake next time we try.
305 - Clean up the rendezvous warn log msgs, and downgrade some to info.
306 - Reduce severity on logs about dns worker spawning and culling.
307 - When we're shutting down and we do something like try to post a
308 server descriptor or rendezvous descriptor, don't complain that
309 we seem to be unreachable. Of course we are, we're shutting down.
310 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
311 We don't use them yet, but maybe one day our DNS resolver will be
312 able to discover them.
313 - Make ContactInfo mandatory for authoritative directory servers.
314 - Require server descriptors to list IPv4 addresses -- hostnames
315 are no longer allowed. This also fixes some potential security
316 problems with people providing hostnames as their address and then
317 preferentially resolving them to partition users.
318 - Change log line for unreachability to explicitly suggest /etc/hosts
319 as the culprit. Also make it clearer what IP address and ports we're
320 testing for reachability.
321 - Put quotes around user-supplied strings when logging so users are
322 more likely to realize if they add bad characters (like quotes)
324 - Let auth dir servers start without specifying an Address config
326 - Make unit tests (and other invocations that aren't the real Tor)
327 run without launching listeners, creating subdirectories, and so on.
330 Changes in version 0.1.1.5-alpha - 2005-08-08
331 o Bugfixes included in 0.1.0.14.
333 o Bugfixes on 0.1.0.x:
334 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
335 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
336 it would silently using ignore the 6668.
339 Changes in version 0.1.1.4-alpha - 2005-08-04
340 o Bugfixes included in 0.1.0.13.
343 - Improve tor_gettimeofday() granularity on windows.
344 - Make clients regenerate their keys when their IP address changes.
345 - Implement some more GETINFO goodness: expose helper nodes, config
346 options, getinfo keys.
349 Changes in version 0.1.1.3-alpha - 2005-07-25
350 o Bugfixes on 0.1.1.2-alpha:
351 - Fix a bug in handling the controller's "post descriptor"
353 - Fix several bugs in handling the controller's "extend circuit"
355 - Fix a bug in handling the controller's "stream status" event.
356 - Fix an assert failure if we have a controller listening for
357 circuit events and we go offline.
358 - Re-allow hidden service descriptors to publish 0 intro points.
359 - Fix a crash when generating your hidden service descriptor if
360 you don't have enough intro points already.
362 o New features on 0.1.1.2-alpha:
363 - New controller function "getinfo accounting", to ask how
364 many bytes we've used in this time period.
365 - Experimental support for helper nodes: a lot of the risk from
366 a small static adversary comes because users pick new random
367 nodes every time they rebuild a circuit. Now users will try to
368 stick to the same small set of entry nodes if they can. Not
369 enabled by default yet.
371 o Bugfixes on 0.1.0.12:
372 - If you're an auth dir server, always publish your dirport,
373 even if you haven't yet found yourself to be reachable.
374 - Fix a size_t underflow in smartlist_join_strings2() that made
375 it do bad things when you hand it an empty smartlist.
378 Changes in version 0.1.1.2-alpha - 2005-07-14
379 o New directory servers:
380 - tor26 has changed IP address.
382 o Bugfixes on 0.1.0.x, crashes/leaks:
383 - Port the servers-not-obeying-their-exit-policies fix from 0.1.0.11.
384 - Fix an fd leak in start_daemon().
385 - On Windows, you can't always reopen a port right after you've
386 closed it. So change retry_listeners() to only close and re-open
387 ports that have changed.
388 - Fix a possible double-free in tor_gzip_uncompress().
390 o Bugfixes on 0.1.0.x, usability:
391 - When tor_socketpair() fails in Windows, give a reasonable
392 Windows-style errno back.
393 - Let people type "tor --install" as well as "tor -install" when they
394 want to make it an NT service.
395 - NT service patch from Matt Edman to improve error messages.
396 - When the controller asks for a config option with an abbreviated
397 name, give the full name in our response.
398 - Correct the man page entry on TrackHostExitsExpire.
399 - Looks like we were never delivering deflated (i.e. compressed)
400 running-routers lists, even when asked. Oops.
401 - When --disable-threads is set, do not search for or link against
404 o Bugfixes on 0.1.1.x:
405 - Fix a seg fault with autodetecting which controller version is
409 - New hidden service descriptor format: put a version in it, and
410 let people specify introduction/rendezvous points that aren't
411 in "the directory" (which is subjective anyway).
412 - Allow the DEBUG controller event to work again. Mark certain log
413 entries as "don't tell this to controllers", so we avoid cycles.
416 Changes in version 0.1.1.1-alpha - 2005-06-29
418 - Make OS X init script check for missing argument, so we don't
419 confuse users who invoke it incorrectly.
420 - Fix a seg fault in "tor --hash-password foo".
421 - Fix a possible way to DoS dirservers.
422 - When we complain that your exit policy implicitly allows local or
423 private address spaces, name them explicitly so operators can
425 - Make the log message less scary when all the dirservers are
426 temporarily unreachable.
427 - We were printing the number of idle dns workers incorrectly when
431 - Revised controller protocol (version 1) that uses ascii rather
432 than binary. Add supporting libraries in python and java so you
433 can use the controller from your applications without caring how
435 - Spiffy new support for crypto hardware accelerators. Can somebody
439 Changes in version 0.1.0.15 - 2005-09-23
440 o Bugfixes on 0.1.0.x:
441 - Reject ports 465 and 587 (spam targets) in default exit policy.
442 - Don't crash when we don't have any spare file descriptors and we
443 try to spawn a dns or cpu worker.
444 - Get rid of IgnoreVersion undocumented config option, and make us
445 only warn, never exit, when we're running an obsolete version.
446 - Don't try to print a null string when your server finds itself to
447 be unreachable and the Address config option is empty.
448 - Make the numbers in read-history and write-history into uint64s,
449 so they don't overflow and publish negatives in the descriptor.
450 - Fix a minor memory leak in smartlist_string_remove().
451 - We were only allowing ourselves to upload a server descriptor at
452 most every 20 minutes, even if it changed earlier than that.
453 - Clean up log entries that pointed to old URLs.
456 Changes in version 0.1.0.14 - 2005-08-08
457 o Bugfixes on 0.1.0.x:
458 - Fix the other half of the bug with crypto handshakes.
459 - Fix an assert trigger if you send a 'signal term' via the
460 controller when it's listening for 'event info' messages.
463 Changes in version 0.1.0.13 - 2005-08-04
464 o Bugfixes on 0.1.0.x:
465 - Fix a critical bug in the security of our crypto handshakes.
466 - Fix a size_t underflow in smartlist_join_strings2() that made
467 it do bad things when you hand it an empty smartlist.
468 - Fix Windows installer to ship Tor license (thanks to Aphex for
469 pointing out this oversight) and put a link to the doc directory
471 - Explicitly set no-unaligned-access for sparc: it turns out the
472 new gcc's let you compile broken code, but that doesn't make it
476 Changes in version 0.1.0.12 - 2005-07-18
477 o New directory servers:
478 - tor26 has changed IP address.
480 o Bugfixes on 0.1.0.x:
481 - Fix a possible double-free in tor_gzip_uncompress().
482 - When --disable-threads is set, do not search for or link against
484 - Don't trigger an assert if an authoritative directory server
485 claims its dirport is 0.
486 - Fix bug with removing Tor as an NT service: some people were
487 getting "The service did not return an error." Thanks to Matt
491 Changes in version 0.1.0.11 - 2005-06-30
492 o Bugfixes on 0.1.0.x:
493 - Fix major security bug: servers were disregarding their
494 exit policies if clients behaved unexpectedly.
495 - Make OS X init script check for missing argument, so we don't
496 confuse users who invoke it incorrectly.
497 - Fix a seg fault in "tor --hash-password foo".
498 - The MAPADDRESS control command was broken.
501 Changes in version 0.1.0.10 - 2005-06-14
503 - Make NT services work and start on startup on Win32 (based on
504 patch by Matt Edman). See the FAQ entry for details.
505 - Make 'platform' string in descriptor more accurate for Win32
506 servers, so it's not just "unknown platform".
507 - REUSEADDR on normal platforms means you can rebind to the port
508 right after somebody else has let it go. But REUSEADDR on Win32
509 means you can bind to the port _even when somebody else already
510 has it bound_! So, don't do that on Win32.
511 - Clean up the log messages when starting on Win32 with no config
513 - Allow seeding the RNG on Win32 even when you're not running as
514 Administrator. If seeding the RNG on Win32 fails, quit.
516 o Assert / crash bugs:
517 - Refuse relay cells that claim to have a length larger than the
518 maximum allowed. This prevents a potential attack that could read
519 arbitrary memory (e.g. keys) from an exit server's process.
520 - If unofficial Tor clients connect and send weird TLS certs, our
521 Tor server triggers an assert. Stop asserting, and start handling
522 TLS errors better in other situations too.
523 - Fix a race condition that can trigger an assert when we have a
524 pending create cell and an OR connection attempt fails.
527 - Use pthreads for worker processes rather than forking. This was
528 forced because when we forked, we ended up wasting a lot of
529 duplicate ram over time.
530 - Also switch to foo_r versions of some library calls to allow
531 reentry and threadsafeness.
532 - Implement --disable-threads configure option. Disable threads on
533 netbsd and openbsd by default, because they have no reentrant
534 resolver functions (!), and on solaris since it has other
536 - Fix possible bug on threading platforms (e.g. win32) which was
537 leaking a file descriptor whenever a cpuworker or dnsworker died.
538 - Fix a minor memory leak when somebody establishes an introduction
539 point at your Tor server.
540 - Fix possible memory leak in tor_lookup_hostname(). (Thanks to
542 - Add ./configure --with-dmalloc option, to track memory leaks.
543 - And try to free all memory on closing, so we can detect what
546 o Protocol correctness:
547 - When we've connected to an OR and handshaked but didn't like
548 the result, we were closing the conn without sending destroy
549 cells back for pending circuits. Now send those destroys.
550 - Start sending 'truncated' cells back rather than destroy cells
551 if the circuit closes in front of you. This means we won't have
552 to abandon partially built circuits.
553 - Handle changed router status correctly when dirserver reloads
554 fingerprint file. We used to be dropping all unverified descriptors
555 right then. The bug was hidden because we would immediately
556 fetch a directory from another dirserver, which would include the
557 descriptors we just dropped.
558 - Revise tor-spec to add more/better stream end reasons.
559 - Revise all calls to connection_edge_end to avoid sending 'misc',
560 and to take errno into account where possible.
561 - Client now retries when streams end early for 'hibernating' or
562 'resource limit' reasons, rather than failing them.
563 - Try to be more zealous about calling connection_edge_end when
564 things go bad with edge conns in connection.c.
566 o Robustness improvements:
567 - Better handling for heterogeneous / unreliable nodes:
568 - Annotate circuits with whether they aim to contain high uptime
569 nodes and/or high capacity nodes. When building circuits, choose
571 - This means that every single node in an intro rend circuit,
572 not just the last one, will have a minimum uptime.
573 - New config option LongLivedPorts to indicate application streams
574 that will want high uptime circuits.
575 - Servers reset uptime when a dir fetch entirely fails. This
576 hopefully reflects stability of the server's network connectivity.
577 - If somebody starts his tor server in Jan 2004 and then fixes his
578 clock, don't make his published uptime be a year.
579 - Reset published uptime when we wake up from hibernation.
580 - Introduce a notion of 'internal' circs, which are chosen without
581 regard to the exit policy of the last hop. Intro and rendezvous
582 circs must be internal circs, to avoid leaking information. Resolve
583 and connect streams can use internal circs if they want.
584 - New circuit pooling algorithm: keep track of what destination ports
585 we've used recently (start out assuming we'll want to use 80), and
586 make sure to have enough circs around to satisfy these ports. Also
587 make sure to have 2 internal circs around if we've required internal
588 circs lately (and with high uptime if we've seen that lately too).
589 - Turn addr_policy_compare from a tristate to a quadstate; this should
590 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
591 for google.com" problem.
592 - When a client asks us for a dir mirror and we don't have one,
593 launch an attempt to get a fresh one.
594 - First cut at support for "create-fast" cells. Clients can use
595 these when extending to their first hop, since the TLS already
596 provides forward secrecy and authentication. Not enabled on
599 o Reachability testing.
600 - Your Tor server will automatically try to see if its ORPort and
601 DirPort are reachable from the outside, and it won't upload its
602 descriptor until it decides at least ORPort is reachable (when
603 DirPort is not yet found reachable, publish it as zero).
604 - When building testing circs for ORPort testing, use only
605 high-bandwidth nodes, so fewer circuits fail.
606 - Notice when our IP changes, and reset stats/uptime/reachability.
607 - Authdirservers don't do ORPort reachability detection, since
608 they're in clique mode, so it will be rare to find a server not
609 already connected to them.
610 - Authdirservers now automatically approve nodes running 0.1.0.2-rc
614 - Now we allow two unverified servers with the same nickname
615 but different keys. But if a nickname is verified, only that
616 nickname+key are allowed.
617 - If you're an authdirserver connecting to an address:port,
618 and it's not the OR you were expecting, forget about that
619 descriptor. If he *was* the one you were expecting, then forget
620 about all other descriptors for that address:port.
621 - Allow servers to publish descriptors from 12 hours in the future.
622 Corollary: only whine about clock skew from the dirserver if
623 he's a trusted dirserver (since now even verified servers could
624 have quite wrong clocks).
625 - Require servers that use the default dirservers to have public IP
626 addresses. We have too many servers that are configured with private
627 IPs and their admins never notice the log entries complaining that
628 their descriptors are being rejected.
630 o Efficiency improvements:
631 - Use libevent. Now we can use faster async cores (like epoll, kpoll,
632 and /dev/poll), and hopefully work better on Windows too.
633 - Apple's OS X 10.4.0 ships with a broken kqueue API, and using
634 kqueue on 10.3.9 causes kernel panics. Don't use kqueue on OS X.
635 - Find libevent even if it's hiding in /usr/local/ and your
636 CFLAGS and LDFLAGS don't tell you to look there.
637 - Be able to link with libevent as a shared library (the default
638 after 1.0d), even if it's hiding in /usr/local/lib and even
639 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
640 assuming you're running gcc. Otherwise fail and give a useful
642 - Switch to a new buffer management algorithm, which tries to avoid
643 reallocing and copying quite as much. In first tests it looks like
644 it uses *more* memory on average, but less cpu.
645 - Switch our internal buffers implementation to use a ring buffer,
646 to hopefully improve performance for fast servers a lot.
647 - Reenable the part of the code that tries to flush as soon as an
648 OR outbuf has a full TLS record available. Perhaps this will make
649 OR outbufs not grow as huge except in rare cases, thus saving lots
650 of CPU time plus memory.
651 - Improve performance for dirservers: stop re-parsing the whole
652 directory every time you regenerate it.
653 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
654 it much faster to look up a circuit for each relay cell.
655 - Remove most calls to assert_all_pending_dns_resolves_ok(),
656 since they're eating our cpu on exit nodes.
657 - Stop wasting time doing a case insensitive comparison for every
658 dns name every time we do any lookup. Canonicalize the names to
659 lowercase when you first see them.
662 - Handle unavailable hidden services better. Handle slow or busy
663 hidden services better.
664 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
665 circ as necessary, if there are any completed ones lying around
666 when we try to launch one.
667 - Make hidden services try to establish a rendezvous for 30 seconds
668 after fetching the descriptor, rather than for n (where n=3)
669 attempts to build a circuit.
670 - Adjust maximum skew and age for rendezvous descriptors: let skew
671 be 48 hours rather than 90 minutes.
672 - Reject malformed .onion addresses rather then passing them on as
676 - More Tor controller support. See
677 http://tor.eff.org/doc/control-spec.txt for all the new features,
678 including signals to emulate unix signals from any platform;
679 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
680 closestream; closecircuit; etc.
681 - Encode hashed controller passwords in hex instead of base64,
682 to make it easier to write controllers.
683 - Revise control spec and implementation to allow all log messages to
684 be sent to controller with their severities intact (suggested by
685 Matt Edman). Disable debug-level logs while delivering a debug-level
686 log to the controller, to prevent loop. Update TorControl to handle
689 o New config options/defaults:
690 - Begin scrubbing sensitive strings from logs by default. Turn off
691 the config option SafeLogging if you need to do debugging.
692 - New exit policy: accept most low-numbered ports, rather than
693 rejecting most low-numbered ports.
694 - Put a note in the torrc about abuse potential with the default
696 - Add support for CONNECTing through https proxies, with "HttpsProxy"
698 - Add HttpProxyAuthenticator and HttpsProxyAuthenticator support
699 based on patch from Adam Langley (basic auth only).
700 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
701 the fast servers that have been joining lately. (Clients are now
702 willing to load balance over up to 2 MB of advertised bandwidth
704 - New config option MaxAdvertisedBandwidth which lets you advertise
705 a low bandwidthrate (to not attract as many circuits) while still
706 allowing a higher bandwidthrate in reality.
707 - Require BandwidthRate to be at least 20kB/s for servers.
708 - Add a NoPublish config option, so you can be a server (e.g. for
709 testing running Tor servers in other Tor networks) without
710 publishing your descriptor to the primary dirservers.
711 - Add a new AddressMap config directive to rewrite incoming socks
712 addresses. This lets you, for example, declare an implicit
713 required exit node for certain sites.
714 - Add a new TrackHostExits config directive to trigger addressmaps
715 for certain incoming socks addresses -- for sites that break when
716 your exit keeps changing (based on patch from Mike Perry).
717 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
718 which describes how often we retry making new circuits if current
719 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
720 how long we're willing to make use of an already-dirty circuit.
721 - Change compiled-in SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to
722 a config option "ShutdownWaitLength" (when using kill -INT on
724 - Fix an edge case in parsing config options: if they say "--"
725 on the commandline, it's not a config option (thanks weasel).
726 - New config option DirAllowPrivateAddresses for authdirservers.
727 Now by default they refuse router descriptors that have non-IP or
728 private-IP addresses.
729 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
730 smart" default value: low for servers and high for clients.
731 - Some people were putting "Address " in their torrc, and they had
732 a buggy resolver that resolved " " to 0.0.0.0. Oops.
733 - If DataDir is ~/.tor, and that expands to /.tor, then default to
734 LOCALSTATEDIR/tor instead.
735 - Implement --verify-config command-line option to check if your torrc
736 is valid without actually launching Tor.
738 o Logging improvements:
739 - When dirservers refuse a server descriptor, we now log its
740 contactinfo, platform, and the poster's IP address.
741 - Only warn once per nickname from add_nickname_list_to_smartlist()
742 per failure, so an entrynode or exitnode choice that's down won't
744 - When we're connecting to an OR and he's got a different nickname/key
745 than we were expecting, only complain loudly if we're an OP or a
746 dirserver. Complaining loudly to the OR admins just confuses them.
747 - Whine at you if you're a server and you don't set your contactinfo.
748 - Warn when exit policy implicitly allows local addresses.
749 - Give a better warning when some other server advertises an
750 ORPort that is actually an apache running ssl.
751 - If we get an incredibly skewed timestamp from a dirserver mirror
752 that isn't a verified OR, don't warn -- it's probably him that's
754 - When a dirserver causes you to give a warn, mention which dirserver
756 - Initialize libevent later in the startup process, so the logs are
757 already established by the time we start logging libevent warns.
758 - Use correct errno on win32 if libevent fails.
759 - Check and warn about known-bad/slow libevent versions.
760 - Stop warning about sigpipes in the logs. We're going to
761 pretend that getting these occassionally is normal and fine.
763 o New contrib scripts:
764 - New experimental script tor/contrib/exitlist: a simple python
765 script to parse directories and find Tor nodes that exit to listed
767 - New experimental script tor/contrib/ExerciseServer.py (needs more
768 work) that uses the controller interface to build circuits and
769 fetch pages over them. This will help us bootstrap servers that
770 have lots of capacity but haven't noticed it yet.
771 - New experimental script tor/contrib/PathDemo.py (needs more work)
772 that uses the controller interface to let you choose whole paths
774 "<hostname>.<path,separated by dots>.<length of path>.path"
775 - New contributed script "privoxy-tor-toggle" to toggle whether
776 Privoxy uses Tor. Seems to be configured for Debian by default.
777 - Have torctl.in/tor.sh.in check for location of su binary (needed
781 - chdir() to your datadirectory at the *end* of the daemonize process,
782 not the beginning. This was a problem because the first time you
783 run tor, if your datadir isn't there, and you have runasdaemon set
784 to 1, it will try to chdir to it before it tries to create it. Oops.
785 - Fix several double-mark-for-close bugs, e.g. where we were finding
786 a conn for a cell even if that conn is already marked for close.
787 - Stop most cases of hanging up on a socks connection without sending
789 - Fix a bug in the RPM package: set home directory for _tor to
790 something more reasonable when first installing.
791 - Stop putting nodename in the Platform string in server descriptors.
792 It doesn't actually help, and it is confusing/upsetting some people.
793 - When using preferred entry or exit nodes, ignore whether the
794 circuit wants uptime or capacity. They asked for the nodes, they
796 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
797 artificially capped at 500kB.
798 - Cache local dns resolves correctly even when they're .exit
800 - If we're hibernating and we get a SIGINT, exit immediately.
801 - tor-resolve requests were ignoring .exit if there was a working circuit
802 they could use instead.
803 - Pay more attention to the ClientOnly config option.
804 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in certain
805 installer screens; and don't put stuff into StartupItems unless
806 the user asks you to.
809 - Rewrite address "serifos.exit" to "externalIP.serifos.exit"
810 rather than just rejecting it.
811 - If our clock jumps forward by 100 seconds or more, assume something
812 has gone wrong with our network and abandon all not-yet-used circs.
813 - When an application is using socks5, give him the whole variety of
814 potential socks5 responses (connect refused, host unreachable, etc),
815 rather than just "success" or "failure".
816 - A more sane version numbering system. See
817 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
818 - Change version parsing logic: a version is "obsolete" if it is not
819 recommended and (1) there is a newer recommended version in the
820 same series, or (2) there are no recommended versions in the same
821 series, but there are some recommended versions in a newer series.
822 A version is "new" if it is newer than any recommended version in
824 - Report HTTP reasons to client when getting a response from directory
825 servers -- so you can actually know what went wrong.
826 - Reject odd-looking addresses at the client (e.g. addresses that
827 contain a colon), rather than having the server drop them because
829 - Stop publishing socksport in the directory, since it's not
830 actually meant to be public. For compatibility, publish a 0 there
832 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
833 cookies to disk and doesn't log each web request to disk. (Thanks
834 to Brett Carrington for pointing this out.)
835 - Add OSX uninstall instructions. An actual uninstall script will
837 - Add "opt hibernating 1" to server descriptor to make it clearer
838 whether the server is hibernating.
841 Changes in version 0.0.9.10 - 2005-06-16
842 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
843 - Refuse relay cells that claim to have a length larger than the
844 maximum allowed. This prevents a potential attack that could read
845 arbitrary memory (e.g. keys) from an exit server's process.
848 Changes in version 0.0.9.9 - 2005-04-23
849 o Bugfixes on 0.0.9.x:
850 - If unofficial Tor clients connect and send weird TLS certs, our
851 Tor server triggers an assert. This release contains a minimal
852 backport from the broader fix that we put into 0.1.0.4-rc.
855 Changes in version 0.0.9.8 - 2005-04-07
856 o Bugfixes on 0.0.9.x:
857 - We have a bug that I haven't found yet. Sometimes, very rarely,
858 cpuworkers get stuck in the 'busy' state, even though the cpuworker
859 thinks of itself as idle. This meant that no new circuits ever got
860 established. Here's a workaround to kill any cpuworker that's been
861 busy for more than 100 seconds.
864 Changes in version 0.0.9.7 - 2005-04-01
865 o Bugfixes on 0.0.9.x:
866 - Fix another race crash bug (thanks to Glenn Fink for reporting).
867 - Compare identity to identity, not to nickname, when extending to
868 a router not already in the directory. This was preventing us from
869 extending to unknown routers. Oops.
870 - Make sure to create OS X Tor user in <500 range, so we aren't
871 creating actual system users.
872 - Note where connection-that-hasn't-sent-end was marked, and fix
873 a few really loud instances of this harmless bug (it's fixed more
877 Changes in version 0.0.9.6 - 2005-03-24
878 o Bugfixes on 0.0.9.x (crashes and asserts):
879 - Add new end stream reasons to maintainance branch. Fix bug where
880 reason (8) could trigger an assert. Prevent bug from recurring.
881 - Apparently win32 stat wants paths to not end with a slash.
882 - Fix assert triggers in assert_cpath_layer_ok(), where we were
883 blowing away the circuit that conn->cpath_layer points to, then
884 checking to see if the circ is well-formed. Backport check to make
885 sure we dont use the cpath on a closed connection.
886 - Prevent circuit_resume_edge_reading_helper() from trying to package
887 inbufs for marked-for-close streams.
888 - Don't crash on hup if your options->address has become unresolvable.
889 - Some systems (like OS X) sometimes accept() a connection and tell
890 you the remote host is 0.0.0.0:0. If this happens, due to some
891 other mis-features, we get confused; so refuse the conn for now.
893 o Bugfixes on 0.0.9.x (other):
894 - Fix harmless but scary "Unrecognized content encoding" warn message.
895 - Add new stream error reason: TORPROTOCOL reason means "you are not
896 speaking a version of Tor I understand; say bye-bye to your stream."
897 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
898 into the future, now that we are more tolerant of skew. This
899 resolves a bug where a Tor server would refuse to cache a directory
900 because all the directories it gets are too far in the future;
901 yet the Tor server never logs any complaints about clock skew.
902 - Mac packaging magic: make man pages useable, and do not overwrite
903 existing torrc files.
904 - Make OS X log happily to /var/log/tor/tor.log
907 Changes in version 0.0.9.5 - 2005-02-22
908 o Bugfixes on 0.0.9.x:
909 - Fix an assert race at exit nodes when resolve requests fail.
910 - Stop picking unverified dir mirrors--it only leads to misery.
911 - Patch from Matt Edman to make NT services work better. Service
912 support is still not compiled into the executable by default.
913 - Patch from Dmitri Bely so the Tor service runs better under
914 the win32 SYSTEM account.
915 - Make tor-resolve actually work (?) on Win32.
916 - Fix a sign bug when getrlimit claims to have 4+ billion
917 file descriptors available.
918 - Stop refusing to start when bandwidthburst == bandwidthrate.
919 - When create cells have been on the onion queue more than five
920 seconds, just send back a destroy and take them off the list.
923 Changes in version 0.0.9.4 - 2005-02-03
925 - Fix an assert bug that took down most of our servers: when
926 a server claims to have 1 GB of bandwidthburst, don't
928 - Don't crash as badly if we have spawned the max allowed number
929 of dnsworkers, or we're out of file descriptors.
930 - Block more file-sharing ports in the default exit policy.
931 - MaxConn is now automatically set to the hard limit of max
932 file descriptors we're allowed (ulimit -n), minus a few for
934 - Give a clearer message when servers need to raise their
935 ulimit -n when they start running out of file descriptors.
936 - SGI Compatibility patches from Jan Schaumann.
937 - Tolerate a corrupt cached directory better.
938 - When a dirserver hasn't approved your server, list which one.
939 - Go into soft hibernation after 95% of the bandwidth is used,
940 not 99%. This is especially important for daily hibernators who
941 have a small accounting max. Hopefully it will result in fewer
942 cut connections when the hard hibernation starts.
943 - Load-balance better when using servers that claim more than
945 - Make NT services work (experimental, only used if compiled in).
948 Changes in version 0.0.9.3 - 2005-01-21
950 - Backport the cpu use fixes from main branch, so busy servers won't
951 need as much processor time.
952 - Work better when we go offline and then come back, or when we
953 run Tor at boot before the network is up. We do this by
954 optimistically trying to fetch a new directory whenever an
955 application request comes in and we think we're offline -- the
956 human is hopefully a good measure of when the network is back.
957 - Backport some minimal hidserv bugfixes: keep rend circuits open as
958 long as you keep using them; actually publish hidserv descriptors
959 shortly after they change, rather than waiting 20-40 minutes.
960 - Enable Mac startup script by default.
961 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
962 - When you update AllowUnverifiedNodes or FirewallPorts via the
963 controller's setconf feature, we were always appending, never
965 - When you update HiddenServiceDir via setconf, it was screwing up
966 the order of reading the lines, making it fail.
967 - Do not rewrite a cached directory back to the cache; otherwise we
968 will think it is recent and not fetch a newer one on startup.
969 - Workaround for webservers that lie about Content-Encoding: Tor
970 now tries to autodetect compressed directories and compression
971 itself. This lets us Proxypass dir fetches through apache.
974 Changes in version 0.0.9.2 - 2005-01-04
975 o Bugfixes on 0.0.9 (crashes and asserts):
976 - Fix an assert on startup when the disk is full and you're logging
978 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
979 style address, then we'd crash.
980 - Fix an assert trigger when the running-routers string we get from
981 a dirserver is broken.
982 - Make worker threads start and run on win32. Now win32 servers
984 - Bandaid (not actually fix, but now it doesn't crash) an assert
985 where the dns worker dies mysteriously and the main Tor process
986 doesn't remember anything about the address it was resolving.
988 o Bugfixes on 0.0.9 (Win32):
989 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
990 name out of the warning/assert messages.
991 - Fix a superficial "unhandled error on read" bug on win32.
992 - The win32 installer no longer requires a click-through for our
993 license, since our Free Software license grants rights but does not
995 - Win32: When connecting to a dirserver fails, try another one
996 immediately. (This was already working for non-win32 Tors.)
997 - Stop trying to parse $HOME on win32 when hunting for default
999 - Make tor-resolve.c work on win32 by calling network_init().
1001 o Bugfixes on 0.0.9 (other):
1002 - Make 0.0.9.x build on Solaris again.
1003 - Due to a fencepost error, we were blowing away the \n when reporting
1004 confvalue items in the controller. So asking for multiple config
1005 values at once couldn't work.
1006 - When listing circuits that are pending on an opening OR connection,
1007 if we're an OR we were listing circuits that *end* at us as
1008 being pending on every listener, dns/cpu worker, etc. Stop that.
1009 - Dirservers were failing to create 'running-routers' or 'directory'
1010 strings if we had more than some threshold of routers. Fix them so
1011 they can handle any number of routers.
1012 - Fix a superficial "Duplicate mark for close" bug.
1013 - Stop checking for clock skew for OR connections, even for servers.
1014 - Fix a fencepost error that was chopping off the last letter of any
1015 nickname that is the maximum allowed nickname length.
1016 - Update URLs in log messages so they point to the new website.
1017 - Fix a potential problem in mangling server private keys while
1018 writing to disk (not triggered yet, as far as we know).
1019 - Include the licenses for other free software we include in Tor,
1020 now that we're shipping binary distributions more regularly.
1023 Changes in version 0.0.9.1 - 2004-12-15
1024 o Bugfixes on 0.0.9:
1025 - Make hibernation actually work.
1026 - Make HashedControlPassword config option work.
1027 - When we're reporting event circuit status to a controller,
1028 don't use the stream status code.
1031 Changes in version 0.0.9 - 2004-12-12
1032 o Bugfixes on 0.0.8.1 (Crashes and asserts):
1033 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
1034 write() call will fail and we handle it there.
1035 - When we run out of disk space, or other log writing error, don't
1036 crash. Just stop logging to that log and continue.
1037 - Fix isspace() and friends so they still make Solaris happy
1038 but also so they don't trigger asserts on win32.
1039 - Fix assert failure on malformed socks4a requests.
1040 - Fix an assert bug where a hidden service provider would fail if
1041 the first hop of his rendezvous circuit was down.
1042 - Better handling of size_t vs int, so we're more robust on 64
1045 o Bugfixes on 0.0.8.1 (Win32):
1046 - Make windows sockets actually non-blocking (oops), and handle
1047 win32 socket errors better.
1048 - Fix parse_iso_time on platforms without strptime (eg win32).
1049 - win32: when being multithreaded, leave parent fdarray open.
1050 - Better handling of winsock includes on non-MSV win32 compilers.
1051 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
1053 - Make unit tests work on win32.
1055 o Bugfixes on 0.0.8.1 (Path selection and streams):
1056 - Calculate timeout for waiting for a connected cell from the time
1057 we sent the begin cell, not from the time the stream started. If
1058 it took a long time to establish the circuit, we would time out
1059 right after sending the begin cell.
1060 - Fix router_compare_addr_to_addr_policy: it was not treating a port
1061 of * as always matching, so we were picking reject *:* nodes as
1062 exit nodes too. Oops.
1063 - When read() failed on a stream, we would close it without sending
1064 back an end. So 'connection refused' would simply be ignored and
1065 the user would get no response.
1066 - Stop a sigpipe: when an 'end' cell races with eof from the app,
1067 we shouldn't hold-open-until-flush if the eof arrived first.
1068 - Let resolve conns retry/expire also, rather than sticking around
1070 - Fix more dns related bugs: send back resolve_failed and end cells
1071 more reliably when the resolve fails, rather than closing the
1072 circuit and then trying to send the cell. Also attach dummy resolve
1073 connections to a circuit *before* calling dns_resolve(), to fix
1074 a bug where cached answers would never be sent in RESOLVED cells.
1076 o Bugfixes on 0.0.8.1 (Circuits):
1077 - Finally fix a bug that's been plaguing us for a year:
1078 With high load, circuit package window was reaching 0. Whenever
1079 we got a circuit-level sendme, we were reading a lot on each
1080 socket, but only writing out a bit. So we would eventually reach
1081 eof. This would be noticed and acted on even when there were still
1082 bytes sitting in the inbuf.
1083 - Use identity comparison, not nickname comparison, to choose which
1084 half of circuit-ID-space each side gets to use. This is needed
1085 because sometimes we think of a router as a nickname, and sometimes
1086 as a hex ID, and we can't predict what the other side will do.
1088 o Bugfixes on 0.0.8.1 (Other):
1089 - Fix a whole slew of memory leaks.
1090 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
1091 - If we are using select, make sure we stay within FD_SETSIZE.
1092 - When poll() is interrupted, we shouldn't believe the revents values.
1093 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
1094 and smartlist_len, which are two major profiling offenders.
1095 - If do_hup fails, actually notice.
1096 - Flush the log file descriptor after we print "Tor opening log file",
1097 so we don't see those messages days later.
1098 - Hidden service operators now correctly handle version 1 style
1099 INTRODUCE1 cells (nobody generates them still, so not a critical
1101 - Handle more errnos from accept() without closing the listener.
1102 Some OpenBSD machines were closing their listeners because
1103 they ran out of file descriptors.
1104 - Some people had wrapped their tor client/server in a script
1105 that would restart it whenever it died. This did not play well
1106 with our "shut down if your version is obsolete" code. Now people
1107 don't fetch a new directory if their local cached version is
1109 - Make our autogen.sh work on ksh as well as bash.
1110 - Better torrc example lines for dirbindaddress and orbindaddress.
1111 - Improved bounds checking on parsed ints (e.g. config options and
1112 the ones we find in directories.)
1113 - Stop using separate defaults for no-config-file and
1114 empty-config-file. Now you have to explicitly turn off SocksPort,
1115 if you don't want it open.
1116 - We were starting to daemonize before we opened our logs, so if
1117 there were any problems opening logs, we would complain to stderr,
1118 which wouldn't work, and then mysteriously exit.
1119 - If a verified OR connects to us before he's uploaded his descriptor,
1120 or we verify him and hup but he still has the original TLS
1121 connection, then conn->nickname is still set like he's unverified.
1123 o Code security improvements, inspired by Ilja:
1124 - tor_snprintf wrapper over snprintf with consistent (though not C99)
1126 - Replace sprintf with tor_snprintf. (I think they were all safe, but
1128 - Replace strcpy/strncpy with strlcpy in more places.
1129 - Avoid strcat; use tor_snprintf or strlcat instead.
1131 o Features (circuits and streams):
1132 - New circuit building strategy: keep a list of ports that we've
1133 used in the past 6 hours, and always try to have 2 circuits open
1134 or on the way that will handle each such port. Seed us with port
1135 80 so web users won't complain that Tor is "slow to start up".
1136 - Make kill -USR1 dump more useful stats about circuits.
1137 - When warning about retrying or giving up, print the address, so
1138 the user knows which one it's talking about.
1139 - If you haven't used a clean circuit in an hour, throw it away,
1140 just to be on the safe side. (This means after 6 hours a totally
1141 unused Tor client will have no circuits open.)
1142 - Support "foo.nickname.exit" addresses, to let Alice request the
1143 address "foo" as viewed by exit node "nickname". Based on a patch
1145 - If your requested entry or exit node has advertised bandwidth 0,
1147 - Be more greedy about filling up relay cells -- we try reading again
1148 once we've processed the stuff we read, in case enough has arrived
1149 to fill the last cell completely.
1150 - Refuse application socks connections to port 0.
1151 - Use only 0.0.9pre1 and later servers for resolve cells.
1153 o Features (bandwidth):
1154 - Hibernation: New config option "AccountingMax" lets you
1155 set how many bytes per month (in each direction) you want to
1156 allow your server to consume. Rather than spreading those
1157 bytes out evenly over the month, we instead hibernate for some
1158 of the month and pop up at a deterministic time, work until
1159 the bytes are consumed, then hibernate again. Config option
1160 "MonthlyAccountingStart" lets you specify which day of the month
1161 your billing cycle starts on.
1162 - Implement weekly/monthly/daily accounting: now you specify your
1163 hibernation properties by
1164 AccountingMax N bytes|KB|MB|GB|TB
1165 AccountingStart day|week|month [day] HH:MM
1166 Defaults to "month 1 0:00".
1167 - Let bandwidth and interval config options be specified as 5 bytes,
1168 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
1170 o Features (directories):
1171 - New "router-status" line in directory, to better bind each verified
1172 nickname to its identity key.
1173 - Clients can ask dirservers for /dir.z to get a compressed version
1174 of the directory. Only works for servers running 0.0.9, of course.
1175 - Make clients cache directories and use them to seed their router
1176 lists at startup. This means clients have a datadir again.
1177 - Respond to content-encoding headers by trying to uncompress as
1179 - Clients and servers now fetch running-routers; cache
1180 running-routers; compress running-routers; serve compressed
1182 - Make moria2 advertise a dirport of 80, so people behind firewalls
1183 will be able to get a directory.
1184 - Http proxy support
1185 - Dirservers translate requests for http://%s:%d/x to /x
1186 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
1187 be routed through this host.
1188 - Clients ask for /tor/x rather than /x for new enough dirservers.
1189 This way we can one day coexist peacefully with apache.
1190 - Clients specify a "Host: %s%d" http header, to be compatible
1191 with more proxies, and so running squid on an exit node can work.
1192 - Protect dirservers from overzealous descriptor uploading -- wait
1193 10 seconds after directory gets dirty, before regenerating.
1195 o Features (packages and install):
1196 - Add NSI installer contributed by J Doe.
1197 - Apply NT service patch from Osamu Fujino. Still needs more work.
1198 - Commit VC6 and VC7 workspace/project files.
1199 - Commit a tor.spec for making RPM files, with help from jbash.
1200 - Add contrib/torctl.in contributed by Glenn Fink.
1201 - Make expand_filename handle ~ and ~username.
1202 - Use autoconf to enable largefile support where necessary. Use
1203 ftello where available, since ftell can fail at 2GB.
1204 - Ship src/win32/ in the tarball, so people can use it to build.
1205 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
1208 o Features (ui controller):
1209 - Control interface: a separate program can now talk to your
1210 client/server over a socket, and get/set config options, receive
1211 notifications of circuits and streams starting/finishing/dying,
1212 bandwidth used, etc. The next step is to get some GUIs working.
1213 Let us know if you want to help out. See doc/control-spec.txt .
1214 - Ship a contrib/tor-control.py as an example script to interact
1215 with the control port.
1216 - "tor --hash-password zzyxz" will output a salted password for
1217 use in authenticating to the control interface.
1218 - Implement the control-spec's SAVECONF command, to write your
1219 configuration to torrc.
1220 - Get cookie authentication for the controller closer to working.
1221 - When set_conf changes our server descriptor, upload a new copy.
1222 But don't upload it too often if there are frequent changes.
1224 o Features (config and command-line):
1225 - Deprecate unofficial config option abbreviations, and abbreviations
1226 not on the command line.
1227 - Configuration infrastructure support for warning on obsolete
1229 - Give a slightly more useful output for "tor -h".
1230 - Break DirFetchPostPeriod into:
1231 - DirFetchPeriod for fetching full directory,
1232 - StatusFetchPeriod for fetching running-routers,
1233 - DirPostPeriod for posting server descriptor,
1234 - RendPostPeriod for posting hidden service descriptors.
1235 - New log format in config:
1236 "Log minsev[-maxsev] stdout|stderr|syslog" or
1237 "Log minsev[-maxsev] file /var/foo"
1238 - DirPolicy config option, to let people reject incoming addresses
1239 from their dirserver.
1240 - "tor --list-fingerprint" will list your identity key fingerprint
1242 - Make tor --version --version dump the cvs Id of every file.
1243 - New 'MyFamily nick1,...' config option for a server to
1244 specify other servers that shouldn't be used in the same circuit
1245 with it. Only believed if nick1 also specifies us.
1246 - New 'NodeFamily nick1,nick2,...' config option for a client to
1247 specify nodes that it doesn't want to use in the same circuit.
1248 - New 'Redirectexit pattern address:port' config option for a
1249 server to redirect exit connections, e.g. to a local squid.
1250 - Add "pass" target for RedirectExit, to make it easier to break
1251 out of a sequence of RedirectExit rules.
1252 - Make the dirservers file obsolete.
1253 - Include a dir-signing-key token in directories to tell the
1254 parsing entity which key is being used to sign.
1255 - Remove the built-in bulky default dirservers string.
1256 - New config option "Dirserver %s:%d [fingerprint]", which can be
1257 repeated as many times as needed. If no dirservers specified,
1258 default to moria1,moria2,tor26.
1259 - Make 'Routerfile' config option obsolete.
1260 - Discourage people from setting their dirfetchpostperiod more often
1261 than once per minute.
1264 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
1265 get back to normal.)
1266 - Accept *:706 (silc) in default exit policy.
1267 - Implement new versioning format for post 0.1.
1268 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
1269 log more informatively.
1270 - Check clock skew for verified servers, but allow unverified
1271 servers and clients to have any clock skew.
1272 - Make sure the hidden service descriptors are at a random offset
1273 from each other, to hinder linkability.
1274 - Clients now generate a TLS cert too, in preparation for having
1275 them act more like real nodes.
1276 - Add a pure-C tor-resolve implementation.
1277 - Use getrlimit and friends to ensure we can reach MaxConn (currently
1278 1024) file descriptors.
1279 - Raise the max dns workers from 50 to 100.
1282 Changes in version 0.0.8.1 - 2004-10-13
1284 - Fix a seg fault that can be triggered remotely for Tor
1285 clients/servers with an open dirport.
1286 - Fix a rare assert trigger, where routerinfos for entries in
1287 our cpath would expire while we're building the path.
1288 - Fix a bug in OutboundBindAddress so it (hopefully) works.
1289 - Fix a rare seg fault for people running hidden services on
1290 intermittent connections.
1291 - Fix a bug in parsing opt keywords with objects.
1292 - Fix a stale pointer assert bug when a stream detaches and
1294 - Fix a string format vulnerability (probably not exploitable)
1295 in reporting stats locally.
1296 - Fix an assert trigger: sometimes launching circuits can fail
1297 immediately, e.g. because too many circuits have failed recently.
1298 - Fix a compile warning on 64 bit platforms.
1301 Changes in version 0.0.8 - 2004-08-25
1303 - Made our unit tests compile again on OpenBSD 3.5, and tor
1304 itself compile again on OpenBSD on a sparc64.
1305 - We were neglecting milliseconds when logging on win32, so
1306 everything appeared to happen at the beginning of each second.
1307 - Check directory signature _before_ you decide whether you're
1308 you're running an obsolete version and should exit.
1309 - Check directory signature _before_ you parse the running-routers
1310 list to decide who's running.
1311 - Check return value of fclose while writing to disk, so we don't
1312 end up with broken files when servers run out of disk space.
1313 - Port it to SunOS 5.9 / Athena
1314 - Fix two bugs in saving onion keys to disk when rotating, so
1315 hopefully we'll get fewer people using old onion keys.
1316 - Remove our mostly unused -- and broken -- hex_encode()
1317 function. Use base16_encode() instead. (Thanks to Timo Lindfors
1318 for pointing out this bug.)
1319 - Only pick and establish intro points after we've gotten a
1321 - Fix assert triggers: if the other side returns an address 0.0.0.0,
1322 don't put it into the client dns cache.
1323 - If a begin failed due to exit policy, but we believe the IP
1324 address should have been allowed, switch that router to exitpolicy
1325 reject *:* until we get our next directory.
1328 - 'Extend' relay cell payloads now include the digest of the
1329 intended next hop's identity key. Now we can verify that we're
1330 extending to the right router, and also extend to routers we
1331 hadn't heard of before.
1334 - Tor nodes can now act as relays (with an advertised ORPort)
1335 without being manually verified by the dirserver operators.
1336 - Uploaded descriptors of unverified routers are now accepted
1337 by the dirservers, and included in the directory.
1338 - Verified routers are listed by nickname in the running-routers
1339 list; unverified routers are listed as "$<fingerprint>".
1340 - We now use hash-of-identity-key in most places rather than
1341 nickname or addr:port, for improved security/flexibility.
1342 - AllowUnverifiedNodes config option to let circuits choose no-name
1343 routers in entry,middle,exit,introduction,rendezvous positions.
1344 Allow middle and rendezvous positions by default.
1345 - When picking unverified routers, skip those with low uptime and/or
1346 low bandwidth, depending on what properties you care about.
1347 - ClientOnly option for nodes that never want to become servers.
1348 - Directory caching.
1349 - "AuthoritativeDir 1" option for the official dirservers.
1350 - Now other nodes (clients and servers) will cache the latest
1351 directory they've pulled down.
1352 - They can enable their DirPort to serve it to others.
1353 - Clients will pull down a directory from any node with an open
1354 DirPort, and check the signature/timestamp correctly.
1355 - Authoritative dirservers now fetch directories from other
1356 authdirservers, to stay better synced.
1357 - Running-routers list tells who's down also, along with noting
1358 if they're verified (listed by nickname) or unverified (listed
1360 - Allow dirservers to serve running-router list separately.
1361 This isn't used yet.
1362 - You can now fetch $DIRURL/running-routers to get just the
1363 running-routers line, not the whole descriptor list. (But
1364 clients don't use this yet.)
1365 - Clients choose nodes proportional to advertised bandwidth.
1366 - Clients avoid using nodes with low uptime as introduction points.
1367 - Handle servers with dynamic IP addresses: don't just replace
1368 options->Address with the resolved one at startup, and
1369 detect our address right before we make a routerinfo each time.
1370 - 'FascistFirewall' option to pick dirservers and ORs on specific
1371 ports; plus 'FirewallPorts' config option to tell FascistFirewall
1372 which ports are open. (Defaults to 80,443)
1373 - Try other dirservers immediately if the one you try is down. This
1374 should tolerate down dirservers better now.
1375 - ORs connect-on-demand to other ORs
1376 - If you get an extend cell to an OR you're not connected to,
1377 connect, handshake, and forward the create cell.
1378 - The authoritative dirservers stay connected to everybody,
1379 and everybody stays connected to 0.0.7 servers, but otherwise
1380 clients/servers expire unused connections after 5 minutes.
1381 - When servers get a sigint, they delay 30 seconds (refusing new
1382 connections) then exit. A second sigint causes immediate exit.
1383 - File and name management:
1384 - Look for .torrc if no CONFDIR "torrc" is found.
1385 - If no datadir is defined, then choose, make, and secure ~/.tor
1387 - If torrc not found, exitpolicy reject *:*.
1388 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
1389 - If no nickname is defined, derive default from hostname.
1390 - Rename secret key files, e.g. identity.key -> secret_id_key,
1391 to discourage people from mailing their identity key to tor-ops.
1392 - Refuse to build a circuit before the directory has arrived --
1393 it won't work anyway, since you won't know the right onion keys
1395 - Parse tor version numbers so we can do an is-newer-than check
1396 rather than an is-in-the-list check.
1397 - New socks command 'resolve', to let us shim gethostbyname()
1399 - A 'tor_resolve' script to access the socks resolve functionality.
1400 - A new socks-extensions.txt doc file to describe our
1401 interpretation and extensions to the socks protocols.
1402 - Add a ContactInfo option, which gets published in descriptor.
1403 - Write tor version at the top of each log file
1404 - New docs in the tarball:
1406 - Document that you should proxy your SSL traffic too.
1407 - Log a warning if the user uses an unsafe socks variant, so people
1408 are more likely to learn about privoxy or socat.
1409 - Log a warning if you're running an unverified server, to let you
1410 know you might want to get it verified.
1411 - Change the default exit policy to reject the default edonkey,
1412 kazaa, gnutella ports.
1413 - Add replace_file() to util.[ch] to handle win32's rename().
1414 - Publish OR uptime in descriptor (and thus in directory) too.
1415 - Remember used bandwidth (both in and out), and publish 15-minute
1416 snapshots for the past day into our descriptor.
1417 - Be more aggressive about trying to make circuits when the network
1418 has changed (e.g. when you unsuspend your laptop).
1419 - Check for time skew on http headers; report date in response to
1421 - If the entrynode config line has only one node, don't pick it as
1423 - Add strict{entry|exit}nodes config options. If set to 1, then
1424 we refuse to build circuits that don't include the specified entry
1426 - OutboundBindAddress config option, to bind to a specific
1427 IP address for outgoing connect()s.
1428 - End truncated log entries (e.g. directories) with "[truncated]".
1431 Changes in version 0.0.7.3 - 2004-08-12
1432 o Stop dnsworkers from triggering an assert failure when you
1433 ask them to resolve the host "".
1436 Changes in version 0.0.7.2 - 2004-07-07
1437 o A better fix for the 0.0.0.0 problem, that will hopefully
1438 eliminate the remaining related assertion failures.
1441 Changes in version 0.0.7.1 - 2004-07-04
1442 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
1443 since internally we use 0.0.0.0 to signify "not yet resolved".
1446 Changes in version 0.0.7 - 2004-06-07
1447 o Fixes for crashes and other obnoxious bugs:
1448 - Fix an epipe bug: sometimes when directory connections failed
1449 to connect, we would give them a chance to flush before closing
1451 - When we detached from a circuit because of resolvefailed, we
1452 would immediately try the same circuit twice more, and then
1453 give up on the resolve thinking we'd tried three different
1455 - Limit the number of intro circuits we'll attempt to build for a
1456 hidden service per 15-minute period.
1457 - Check recommended-software string *early*, before actually parsing
1458 the directory. Thus we can detect an obsolete version and exit,
1459 even if the new directory format doesn't parse.
1460 o Fixes for security bugs:
1461 - Remember which nodes are dirservers when you startup, and if a
1462 random OR enables his dirport, don't automatically assume he's
1463 a trusted dirserver.
1465 - Directory connections were asking the wrong poll socket to
1466 start writing, and not asking themselves to start writing.
1467 - When we detached from a circuit because we sent a begin but
1468 didn't get a connected, we would use it again the first time;
1469 but after that we would correctly switch to a different one.
1470 - Stop warning when the first onion decrypt attempt fails; they
1471 will sometimes legitimately fail now that we rotate keys.
1472 - Override unaligned-access-ok check when $host_cpu is ia64 or
1473 arm. Apparently they allow it but the kernel whines.
1474 - Dirservers try to reconnect periodically too, in case connections
1476 - Fix some memory leaks in directory servers.
1477 - Allow backslash in Win32 filenames.
1478 - Made Tor build complain-free on FreeBSD, hopefully without
1479 breaking other BSD builds. We'll see.
1480 - Check directory signatures based on name of signer, not on whom
1481 we got the directory from. This will let us cache directories more
1483 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
1486 - Doxygen markup on all functions and global variables.
1487 - Make directory functions update routerlist, not replace it. So
1488 now directory disagreements are not so critical a problem.
1489 - Remove the upper limit on number of descriptors in a dirserver's
1490 directory (not that we were anywhere close).
1491 - Allow multiple logfiles at different severity ranges.
1492 - Allow *BindAddress to specify ":port" rather than setting *Port
1493 separately. Allow multiple instances of each BindAddress config
1494 option, so you can bind to multiple interfaces if you want.
1495 - Allow multiple exit policy lines, which are processed in order.
1496 Now we don't need that huge line with all the commas in it.
1497 - Enable accept/reject policies on SOCKS connections, so you can bind
1498 to 0.0.0.0 but still control who can use your OP.
1499 - Updated the man page to reflect these features.
1502 Changes in version 0.0.6.2 - 2004-05-16
1503 o Our integrity-checking digest was checking only the most recent cell,
1504 not the previous cells like we'd thought.
1505 Thanks to Stefan Mark for finding the flaw!
1508 Changes in version 0.0.6.1 - 2004-05-06
1509 o Fix two bugs in our AES counter-mode implementation (this affected
1510 onion-level stream encryption, but not TLS-level). It turns
1511 out we were doing something much more akin to a 16-character
1512 polyalphabetic cipher. Oops.
1513 Thanks to Stefan Mark for finding the flaw!
1514 o Retire moria3 as a directory server, and add tor26 as a directory
1518 Changes in version 0.0.6 - 2004-05-02
1520 - Hidden services and rendezvous points are implemented. Go to
1521 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
1522 hidden services. (This only works via a socks4a proxy such as
1523 Privoxy, and currently it's quite slow.)
1524 - We now rotate link (tls context) keys and onion keys.
1525 - CREATE cells now include oaep padding, so you can tell
1526 if you decrypted them correctly.
1527 - Retry stream correctly when we fail to connect because of
1528 exit-policy-reject (should try another) or can't-resolve-address.
1529 - When we hup a dirserver and we've *removed* a server from the
1530 approved-routers list, now we remove that server from the
1531 in-memory directories too.
1532 - Add bandwidthburst to server descriptor.
1533 - Directories now say which dirserver signed them.
1534 - Use a tor_assert macro that logs failed assertions too.
1535 - Since we don't support truncateds much, don't bother sending them;
1536 just close the circ.
1537 - Fetch randomness from /dev/urandom better (not via fopen/fread)
1538 - Better debugging for tls errors
1539 - Set Content-Type on the directory and hidserv descriptor.
1540 - Remove IVs from cipher code, since AES-ctr has none.
1542 - Fix an assert trigger for exit nodes that's been plaguing us since
1543 the days of 0.0.2prexx (thanks weasel!)
1544 - Fix a bug where we were closing tls connections intermittently.
1545 It turns out openssl keeps its errors around -- so if an error
1546 happens, and you don't ask about it, and then another openssl
1547 operation happens and succeeds, and you ask if there was an error,
1548 it tells you about the first error.
1549 - Fix a bug that's been lurking since 27 may 03 (!)
1550 When passing back a destroy cell, we would use the wrong circ id.
1551 - Don't crash if a conn that sent a begin has suddenly lost its circuit.
1552 - Some versions of openssl have an SSL_pending function that erroneously
1553 returns bytes when there is a non-application record pending.
1554 - Win32 fixes. Tor now compiles on win32 with no warnings/errors.
1555 o We were using an array of length zero in a few places.
1556 o Win32's gethostbyname can't resolve an IP to an IP.
1557 o Win32's close can't close a socket.
1558 o Handle windows socket errors correctly.
1560 - check for <sys/limits.h> so we build on FreeBSD again, and
1561 <machine/limits.h> for NetBSD.
1564 Changes in version 0.0.5 - 2004-03-30
1565 o Install torrc as torrc.sample -- we no longer clobber your
1567 o Fix mangled-state bug in directory fetching (was causing sigpipes).
1568 o Only build circuits after we've fetched the directory: clients were
1569 using only the directory servers before they'd fetched a directory.
1570 This also means longer startup time; so it goes.
1571 o Fix an assert trigger where an OP would fail to handshake, and we'd
1572 expect it to have a nickname.
1573 o Work around a tsocks bug: do a socks reject when AP connection dies
1574 early, else tsocks goes into an infinite loop.
1575 o Hold socks connection open until reply is flushed (if possible)
1576 o Make exit nodes resolve IPs to IPs immediately, rather than asking
1577 the dns farm to do it.
1578 o Fix c99 aliasing warnings in rephist.c
1579 o Don't include server descriptors that are older than 24 hours in the
1581 o Give socks 'reject' replies their whole 15s to attempt to flush,
1582 rather than seeing the 60s timeout and assuming the flush had failed.
1583 o Clean automake droppings from the cvs repository
1584 o Add in a 'notice' log level for things the operator should hear
1585 but that aren't warnings
1588 Changes in version 0.0.4 - 2004-03-26
1589 o When connecting to a dirserver or OR and the network is down,
1593 Changes in version 0.0.3 - 2004-03-26
1594 o Warn and fail if server chose a nickname with illegal characters
1595 o Port to Solaris and Sparc:
1596 - include missing header fcntl.h
1597 - have autoconf find -lsocket -lnsl automatically
1598 - deal with hardware word alignment
1599 - make uname() work (solaris has a different return convention)
1600 - switch from using signal() to sigaction()
1601 o Preliminary work on reputation system:
1602 - Keep statistics on success/fail of connect attempts; they're published
1603 by kill -USR1 currently.
1604 - Add a RunTesting option to try to learn link state by creating test
1605 circuits, even when SocksPort is off.
1606 - Remove unused open circuits when there are too many.
1609 Changes in version 0.0.2 - 2004-03-19
1610 - Include strlcpy and strlcat for safer string ops
1611 - define INADDR_NONE so we compile (but still not run) on solaris
1614 Changes in version 0.0.2pre27 - 2004-03-14
1616 - Allow internal tor networks (we were rejecting internal IPs,
1617 now we allow them if they're set explicitly).
1618 - And fix a few endian issues.
1621 Changes in version 0.0.2pre26 - 2004-03-14
1623 - If a stream times out after 15s without a connected cell, don't
1624 try that circuit again: try a new one.
1625 - Retry streams at most 4 times. Then give up.
1626 - When a dirserver gets a descriptor from an unknown router, it
1627 logs its fingerprint (so the dirserver operator can choose to
1628 accept it even without mail from the server operator).
1629 - Inform unapproved servers when we reject their descriptors.
1630 - Make tor build on Windows again. It works as a client, who knows
1632 - Clearer instructions in the torrc for how to set up a server.
1633 - Be more efficient about reading fd's when our global token bucket
1634 (used for rate limiting) becomes empty.
1636 - Stop asserting that computers always go forward in time. It's
1638 - When we sent a cell (e.g. destroy) and then marked an OR connection
1639 expired, we might close it before finishing a flush if the other
1640 side isn't reading right then.
1641 - Don't allow dirservers to start if they haven't defined
1643 - We were caching transient dns failures. Oops.
1644 - Prevent servers from publishing an internal IP as their address.
1645 - Address a strcat vulnerability in circuit.c
1648 Changes in version 0.0.2pre25 - 2004-03-04
1650 - Put the OR's IP in its router descriptor, not its fqdn. That way
1651 we'll stop being stalled by gethostbyname for nodes with flaky dns,
1654 - If the user typed in an address that didn't resolve, the server
1658 Changes in version 0.0.2pre24 - 2004-03-03
1660 - Fix an assertion failure in dns.c, where we were trying to dequeue
1661 a pending dns resolve even if it wasn't pending
1662 - Fix a spurious socks5 warning about still trying to write after the
1663 connection is finished.
1664 - Hold certain marked_for_close connections open until they're finished
1665 flushing, rather than losing bytes by closing them too early.
1666 - Correctly report the reason for ending a stream
1667 - Remove some duplicate calls to connection_mark_for_close
1668 - Put switch_id and start_daemon earlier in the boot sequence, so it
1669 will actually try to chdir() to options.DataDirectory
1670 - Make 'make test' exit(1) if a test fails; fix some unit tests
1671 - Make tor fail when you use a config option it doesn't know about,
1672 rather than warn and continue.
1673 - Make --version work
1674 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
1677 Changes in version 0.0.2pre23 - 2004-02-29
1679 - Print a statement when the first circ is finished, so the user
1681 - If a relay cell is unrecognized at the end of the circuit,
1682 send back a destroy. (So attacks to mutate cells are more
1684 - New config option 'excludenodes' to avoid certain nodes for circuits.
1685 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
1686 so you can collect coredumps there.
1688 - Fix a bug in tls flushing where sometimes data got wedged and
1689 didn't flush until more data got sent. Hopefully this bug was
1690 a big factor in the random delays we were seeing.
1691 - Make 'connected' cells include the resolved IP, so the client
1692 dns cache actually gets populated.
1693 - Disallow changing from ORPort=0 to ORPort>0 on hup.
1694 - When we time-out on a stream and detach from the circuit, send an
1695 end cell down it first.
1696 - Only warn about an unknown router (in exitnodes, entrynodes,
1697 excludenodes) after we've fetched a directory.
1700 Changes in version 0.0.2pre22 - 2004-02-26
1702 - Servers publish less revealing uname information in descriptors.
1703 - More memory tracking and assertions, to crash more usefully when
1705 - If the default torrc isn't there, just use some default defaults.
1706 Plus provide an internal dirservers file if they don't have one.
1707 - When the user tries to use Tor as an http proxy, give them an http
1708 501 failure explaining that we're a socks proxy.
1709 - Dump a new router.desc on hup, to help confused people who change
1710 their exit policies and then wonder why router.desc doesn't reflect
1712 - Clean up the generic tor.sh init script that we ship with.
1714 - If the exit stream is pending on the resolve, and a destroy arrives,
1715 then the stream wasn't getting removed from the pending list. I
1716 think this was the one causing recent server crashes.
1717 - Use a more robust poll on OSX 10.3, since their poll is flaky.
1718 - When it couldn't resolve any dirservers, it was useless from then on.
1719 Now it reloads the RouterFile (or default dirservers) if it has no
1721 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
1722 many users don't even *have* a /usr/local/sbin/.
1725 Changes in version 0.0.2pre21 - 2004-02-18
1727 - There's a ChangeLog file that actually reflects the changelog.
1728 - There's a 'torify' wrapper script, with an accompanying
1729 tor-tsocks.conf, that simplifies the process of using tsocks for
1730 tor. It even has a man page.
1731 - The tor binary gets installed to sbin rather than bin now.
1732 - Retry streams where the connected cell hasn't arrived in 15 seconds
1733 - Clean up exit policy handling -- get the default out of the torrc,
1734 so we can update it without forcing each server operator to fix
1736 - Allow imaps and pop3s in default exit policy
1738 - Prevent picking middleman nodes as the last node in the circuit
1741 Changes in version 0.0.2pre20 - 2004-01-30
1743 - We now have a deb package, and it's in debian unstable. Go to
1745 - I've split the TotalBandwidth option into BandwidthRate (how many
1746 bytes per second you want to allow, long-term) and
1747 BandwidthBurst (how many bytes you will allow at once before the cap
1748 kicks in). This better token bucket approach lets you, say, set
1749 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
1750 performance while not exceeding your monthly bandwidth quota.
1751 - Push out a tls record's worth of data once you've got it, rather
1752 than waiting until you've read everything waiting to be read. This
1753 may improve performance by pipelining better. We'll see.
1754 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
1755 from failed circuits (if they haven't been connected yet) and attach
1757 - Expire old streams that haven't managed to connect. Some day we'll
1758 have them reattach to new circuits instead.
1761 - Fix several memory leaks that were causing servers to become bloated
1763 - Fix a few very rare assert triggers. A few more remain.
1764 - Setuid to User _before_ complaining about running as root.
1767 Changes in version 0.0.2pre19 - 2004-01-07
1769 - Fix deadlock condition in dns farm. We were telling a child to die by
1770 closing the parent's file descriptor to him. But newer children were
1771 inheriting the open file descriptor from the parent, and since they
1772 weren't closing it, the socket never closed, so the child never read
1773 eof, so he never knew to exit. Similarly, dns workers were holding
1774 open other sockets, leading to all sorts of chaos.
1775 - New cleaner daemon() code for forking and backgrounding.
1776 - If you log to a file, it now prints an entry at the top of the
1777 logfile so you know it's working.
1778 - The onionskin challenge length was 30 bytes longer than necessary.
1779 - Started to patch up the spec so it's not quite so out of date.
1782 Changes in version 0.0.2pre18 - 2004-01-02
1784 - Fix endian issues with the 'integrity' field in the relay header.
1785 - Fix a potential bug where connections in state
1786 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
1789 Changes in version 0.0.2pre17 - 2003-12-30
1791 - Made --debuglogfile (or any second log file, actually) work.
1792 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
1793 adversary could force us into an infinite loop.
1796 - Each onionskin handshake now includes a hash of the computed key,
1797 to prove the server's identity and help perfect forward secrecy.
1798 - Changed cell size from 256 to 512 bytes (working toward compatibility
1800 - Changed cell length to 2 bytes, and moved it to the relay header.
1801 - Implemented end-to-end integrity checking for the payloads of
1803 - Separated streamid from 'recognized' (otherwise circuits will get
1804 messed up when we try to have streams exit from the middle). We
1805 use the integrity-checking to confirm that a cell is addressed to
1807 - Randomize the initial circid and streamid values, so an adversary who
1808 breaks into a node can't learn how many circuits or streams have
1812 Changes in version 0.0.2pre16 - 2003-12-14
1814 - Fixed a bug that made HUP trigger an assert
1815 - Fixed a bug where a circuit that immediately failed wasn't being
1816 counted as a failed circuit in counting retries.
1819 - Now we close the circuit when we get a truncated cell: otherwise we're
1820 open to an anonymity attack where a bad node in the path truncates
1821 the circuit and then we open streams at him.
1822 - Add port ranges to exit policies
1823 - Add a conservative default exit policy
1824 - Warn if you're running tor as root
1825 - on HUP, retry OR connections and close/rebind listeners
1826 - options.EntryNodes: try these nodes first when picking the first node
1827 - options.ExitNodes: if your best choices happen to include any of
1828 your preferred exit nodes, you choose among just those preferred
1830 - options.ExcludedNodes: nodes that are never picked in path building
1833 Changes in version 0.0.2pre15 - 2003-12-03
1834 o Robustness and bugfixes:
1835 - Sometimes clients would cache incorrect DNS resolves, which would
1836 really screw things up.
1837 - An OP that goes offline would slowly leak all its sockets and stop
1839 - A wide variety of bugfixes in exit node selection, exit policy
1840 handling, and processing pending streams when a new circuit is
1842 - Pick nodes for a path only from those the directory says are up
1843 - Choose randomly from all running dirservers, not always the first one
1844 - Increase allowed http header size for directory fetch.
1845 - Stop writing to stderr (if we're daemonized it will be closed).
1846 - Enable -g always, so cores will be more useful to me.
1847 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
1850 - Wrote a man page. It lists commonly used options.
1853 - Change default loglevel to warn.
1854 - Make PidFile default to null rather than littering in your CWD.
1855 - OnionRouter config option is now obsolete. Instead it just checks
1857 - Moved to a single unified torrc file for both clients and servers.
1860 Changes in version 0.0.2pre14 - 2003-11-29
1861 o Robustness and bugfixes:
1862 - Force the admin to make the DataDirectory himself
1863 - to get ownership/permissions right
1864 - so clients no longer make a DataDirectory and then never use it
1865 - fix bug where a client who was offline for 45 minutes would never
1866 pull down a directory again
1867 - fix (or at least hide really well) the dns assert bug that was
1868 causing server crashes
1869 - warnings and improved robustness wrt clockskew for certs
1870 - use the native daemon(3) to daemonize, when available
1871 - exit if bind() fails
1872 - exit if neither socksport nor orport is defined
1873 - include our own tor_timegm (Win32 doesn't have its own)
1874 - bugfix for win32 with lots of connections
1875 - fix minor bias in PRNG
1876 - make dirserver more robust to corrupt cached directory
1879 - Wrote the design document (woo)
1881 o Circuit building and exit policies:
1882 - Circuits no longer try to use nodes that the directory has told them
1884 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
1885 bitcounts (18.0.0.0/8).
1886 - Make AP connections standby for a circuit if no suitable circuit
1887 exists, rather than failing
1888 - Circuits choose exit node based on addr/port, exit policies, and
1889 which AP connections are standing by
1890 - Bump min pathlen from 2 to 3
1891 - Relay end cells have a payload to describe why the stream ended.
1892 - If the stream failed because of exit policy, try again with a new
1894 - Clients have a dns cache to remember resolved addresses.
1895 - Notice more quickly when we have no working circuits
1898 - APPort is now called SocksPort
1899 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
1901 - RecommendedVersions is now a config variable rather than
1902 hardcoded (for dirservers)
1903 - Reloads config on HUP
1904 - Usage info on -h or --help
1905 - If you set User and Group config vars, it'll setu/gid to them.
1907 Changes in version 0.0.2pre13 - 2003-10-19
1908 o General stability:
1909 - SSL_write no longer fails when it returns WANTWRITE and the number
1910 of bytes in the buf has changed by the next SSL_write call.
1911 - Fix segfault fetching directory when network is down
1912 - Fix a variety of minor memory leaks
1913 - Dirservers reload the fingerprints file on HUP, so I don't have
1914 to take down the network when I approve a new router
1915 - Default server config file has explicit Address line to specify fqdn
1918 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
1919 - Make listener connections not ever alloc bufs
1921 o Autoconf improvements:
1922 - don't clobber an external CFLAGS in ./configure
1923 - Make install now works
1924 - create var/lib/tor on make install
1925 - autocreate a tor.sh initscript to help distribs
1926 - autocreate the torrc and sample-server-torrc with correct paths
1928 o Log files and Daemonizing now work:
1929 - If --DebugLogFile is specified, log to it at -l debug
1930 - If --LogFile is specified, use it instead of commandline
1931 - If --RunAsDaemon is set, tor forks and backgrounds on startup