1 Changes in version 0.2.0.3-alpha - 2007-??-??
3 - Create listener connections before we setuid to the configured User and
4 Group. This way, you can choose port values under 1024, start Tor as
5 root, and have Tor bind those ports before it changes to another UID.
6 - tor-gencert creates all files as readable to the file creator only, and
7 write-protects the authority identity key.
9 o Minor features (directory authority):
10 - Fail quickly and (relatively) harmlessly if we generate a network
11 status document that is somehow malformed.
13 o Deprecated features:
14 - RedirectExits is now deprecated.
16 o Minor feature (controller):
17 - You can now use the ControlSocket option to tell Tor to listen for
18 controller connections on Unix domain sockets on systems that support
19 them. (Patch from Peter Palfrader.)
21 o Minor bugfixes (directory):
22 - Fix another crash bug related to extra-info caching. (Bug found by
23 Peter Palfrader.) [Bugfix on 0.2.0.2-alpha]
24 - Directories no longer return a "304 not modified" when they don't
25 have the networkstatus the client asked for. Also fix a memory
26 leak when returning 304 not modified. [Bugfixes on 0.2.0.2-alpha]
28 o Minor bugfixes (dns):
29 - Fix a crash when DNSPort is set more than once. (Patch from Robert
30 Hogan.) [Bugfix on 0.2.0.2-alpha]
31 - Add DNSPort connections to the global connection list, so that we
32 can time them out correctly. (Bug found by mwenge) [Bugfix on
35 o Minor bugfixes (hidden services):
36 - Stop tearing down the whole circuit when the user asks for a
37 connection to a port that the hidden service didn't configure.
38 Resolves bug 444. [Bugfix on 0.1.2.x]
40 o Minor bugfixes (versioning):
41 - Stop under-counting the number of authorities that recommend each
42 version. [Bugfix on 0.1.2.x]
45 Changes in version 0.2.0.2-alpha - 2007-06-02
46 o Major bugfixes on 0.2.0.1-alpha:
47 - Fix an assertion failure related to servers without extra-info digests.
48 Resolves bugs 441 and 442.
50 o Minor features (directory):
51 - Support "If-Modified-Since" when answering HTTP requests for
52 directories, running-routers documents, and network-status documents.
53 (There's no need to support it for router descriptors, since those
54 are downloaded by descriptor digest.)
57 - Clear up some MIPSPro compiler warnings.
58 - When building from a tarball on a machine that happens to have SVK
59 installed, report the micro-revision as whatever version existed
60 in the tarball, not as "x".
63 Changes in version 0.2.0.1-alpha - 2007-06-01
64 o Major features, server usability:
65 - New config options RelayBandwidthRate and RelayBandwidthBurst:
66 a separate set of token buckets for relayed traffic. Right now
67 relayed traffic is defined as answers to directory requests, and
68 OR connections that don't have any local circuits on them.
70 o Major features, client usability:
71 - A client-side DNS proxy feature to replace the need for
72 dns-proxy-tor: Just set "DNSPort 9999", and Tor will now listen
73 for DNS requests on port 9999, use the Tor network to resolve them
74 anonymously, and send the reply back like a regular DNS server.
75 The code still only implements a subset of DNS.
76 - Make PreferTunneledDirConns and TunnelDirConns work even when
77 we have no cached directory info. This means Tor clients can now
78 do all of their connections protected by TLS.
80 o Major features, performance and efficiency:
81 - Directory authorities accept and serve "extra info" documents for
82 routers. These documents contain fields from router descriptors
83 that aren't usually needed, and that use a lot of excess
84 bandwidth. Once these fields are removed from router descriptors,
85 the bandwidth savings should be about 60%. [Partially implements
87 - Servers upload extra-info documents to any authority that accepts
88 them. Authorities (and caches that have been configured to download
89 extra-info documents) download them as needed. [Partially implements
91 - Change the way that Tor buffers data that it is waiting to write.
92 Instead of queueing data cells in an enormous ring buffer for each
93 client->OR or OR->OR connection, we now queue cells on a separate
94 queue for each circuit. This lets us use less slack memory, and
95 will eventually let us be smarter about prioritizing different kinds
97 - Use memory pools to allocate cells with better speed and memory
98 efficiency, especially on platforms where malloc() is inefficient.
99 - Stop reading on edge connections when their corresponding circuit
100 buffers are full; start again as the circuits empty out.
102 o Major features, other:
103 - Add an HSAuthorityRecordStats option that hidden service authorities
104 can use to track statistics of overall hidden service usage without
105 logging information that would be very useful to an attacker.
106 - Start work implementing multi-level keys for directory authorities:
107 Add a standalone tool to generate key certificates. (Proposal 103.)
110 - Directory authorities now call routers stable if they have an
111 uptime of at least 30 days, even if that's not the median uptime
112 in the network. Implements proposal 107, suggested by Kevin Bauer
115 o Minor fixes (resource management):
116 - Count the number of open sockets separately from the number
117 of active connection_t objects. This will let us avoid underusing
118 our allocated connection limit.
119 - We no longer use socket pairs to link an edge connection to an
120 anonymous directory connection or a DirPort test connection.
121 Instead, we track the link internally and transfer the data
122 in-process. This saves two sockets per "linked" connection (at the
123 client and at the server), and avoids the nasty Windows socketpair()
125 - Keep unused 4k and 16k buffers on free lists, rather than wasting 8k
126 for every single inactive connection_t. Free items from the
127 4k/16k-buffer free lists when they haven't been used for a while.
129 o Minor features (build):
130 - Make autoconf search for libevent, openssl, and zlib consistently.
131 - Update deprecated macros in configure.in.
132 - When warning about missing headers, tell the user to let us
133 know if the compile succeeds anyway, so we can downgrade the
135 - Include the current subversion revision as part of the version
136 string: either fetch it directly if we're in an SVN checkout, do
137 some magic to guess it if we're in an SVK checkout, or use
138 the last-detected version if we're building from a .tar.gz.
139 Use this version consistently in log messages.
141 o Minor features (logging):
142 - Always prepend "Bug: " to any log message about a bug.
143 - Put a platform string (e.g. "Linux i686") in the startup log
144 message, so when people paste just their logs, we know if it's
145 OpenBSD or Windows or what.
146 - When logging memory usage, break down memory used in buffers by
149 o Minor features (directory system):
150 - New config option V2AuthoritativeDirectory that all directory
151 authorities should set. This will let future authorities choose
152 not to serve V2 directory information.
153 - Directory authorities allow multiple router descriptors and/or extra
154 info documents to be uploaded in a single go. This will make
155 implementing proposal 104 simpler.
157 o Minor features (controller):
158 - Add a new config option __DisablePredictedCircuits designed for
159 use by the controller, when we don't want Tor to build any circuits
161 - Let the controller specify HOP=%d as an argument to ATTACHSTREAM,
162 so we can exit from the middle of the circuit.
163 - Implement "getinfo status/circuit-established".
164 - Implement "getinfo status/version/..." so a controller can tell
165 whether the current version is recommended, and whether any versions
166 are good, and how many authorities agree. (Patch from shibz.)
168 o Minor features (hidden services):
169 - Allow multiple HiddenServicePort directives with the same virtual
170 port; when they occur, the user is sent round-robin to one
171 of the target ports chosen at random. Partially fixes bug 393 by
172 adding limited ad-hoc round-robining.
174 o Minor features (other):
176 - Add a new AutomapHostsOnResolve option: when it is enabled, any
177 resolve request for hosts matching a given pattern causes Tor to
178 generate an internal virtual address mapping for that host. This
179 allows DNSPort to work sensibly with hidden service users. By
180 default, .exit and .onion addresses are remapped; the list of
181 patterns can be reconfigured with AutomapHostsSuffixes.
182 - Add an "-F" option to tor-resolve to force a resolve for a .onion
183 address. Thanks to the AutomapHostsOnResolve option, this is no
184 longer a completely silly thing to do.
185 - If Tor is invoked from something that isn't a shell (e.g. Vidalia),
186 now we expand "-f ~/.tor/torrc" correctly. Suggested by Matt Edman.
187 - Treat "2gb" when given in torrc for a bandwidth as meaning 2gb,
188 minus 1 byte: the actual maximum declared bandwidth.
191 - Removed support for the old binary "version 0" controller protocol.
192 This has been deprecated since 0.1.1, and warnings have been issued
193 since 0.1.2. When we encounter a v0 control message, we now send
194 back an error and close the connection.
195 - Remove the old "dns worker" server DNS code: it hasn't been default
196 since 0.1.2.2-alpha, and all the servers seem to be using the new
199 o Minor bugfixes (portability):
200 - Even though Windows is equally happy with / and \ as path separators,
201 try to use \ consistently on Windows and / consistently on Unix: it
202 makes the log messages nicer.
203 - Correctly report platform name on Windows 95 OSR2 and Windows 98 SE.
204 - Read resolv.conf files correctly on platforms where read() returns
205 partial results on small file reads.
207 o Minor bugfixes (directory):
208 - Correctly enforce that elements of directory objects do not appear
209 more often than they are allowed to appear.
210 - When we are reporting the DirServer line we just parsed, we were
211 logging the second stanza of the key fingerprint, not the first.
213 o Minor bugfixes (logging):
214 - When we hit an EOF on a log (probably because we're shutting down),
215 don't try to remove the log from the list: just mark it as
216 unusable. (Bulletproofs against bug 222.)
218 o Minor bugfixes (other):
219 - In the exitlist script, only consider the most recently published
220 server descriptor for each server. Also, when the user requests
221 a list of servers that _reject_ connections to a given address,
222 explicitly exclude the IPs that also have servers that accept
223 connections to that address. (Resolves bug 405.)
224 - Stop allowing hibernating servers to be "stable" or "fast".
225 - On Windows, we were preventing other processes from reading
226 cached-routers while Tor was running. (Reported by janbar)
227 - Make the NodeFamilies config option work. (Reported by
228 lodger -- it has never actually worked, even though we added it
230 - Check return values from pthread_mutex functions.
231 - Don't save non-general-purpose router descriptors to the disk cache,
232 because we have no way of remembering what their purpose was when
234 - Add even more asserts to hunt down bug 417.
235 - Build without verbose warnings even on (not-yet-released) gcc 4.2.
237 o Minor bugfixes (controller):
238 - Make 'getinfo fingerprint' return a 551 error if we're not a
239 server, so we match what the control spec claims we do. Reported
241 - Fix a typo in an error message when extendcircuit fails that
242 caused us to not follow the \r\n-based delimiter protocol. Reported
245 o Code simplifications and refactoring:
246 - Stop passing around circuit_t and crypt_path_t pointers that are
247 implicit in other procedure arguments.
248 - Drop the old code to choke directory connections when the
249 corresponding OR connections got full: thanks to the cell queue
250 feature, OR conns don't get full any more.
251 - Make dns_resolve() handle attaching connections to circuits
252 properly, so the caller doesn't have to.
253 - Rename wants_to_read and wants_to_write to read/write_blocked_on_bw.
254 - Keep the connection array as a dynamic smartlist_t, rather than as
255 a fixed-sized array. This is important, as the number of connections
256 is becoming increasingly decoupled from the number of sockets.
259 Changes in version 0.1.2.14 - 2007-05-25
260 o Directory authority changes:
261 - Two directory authorities (moria1 and moria2) just moved to new
262 IP addresses. This change will particularly affect those who serve
263 or use hidden services.
265 o Major bugfixes (crashes):
266 - If a directory server runs out of space in the connection table
267 as it's processing a begin_dir request, it will free the exit stream
268 but leave it attached to the circuit, leading to unpredictable
269 behavior. (Reported by seeess, fixes bug 425.)
270 - Fix a bug in dirserv_remove_invalid() that would cause authorities
271 to corrupt memory under some really unlikely scenarios.
272 - Tighten router parsing rules. (Bugs reported by Benedikt Boss.)
273 - Avoid segfaults when reading from mmaped descriptor file. (Reported
276 o Major bugfixes (security):
277 - When choosing an entry guard for a circuit, avoid using guards
278 that are in the same family as the chosen exit -- not just guards
279 that are exactly the chosen exit. (Reported by lodger.)
281 o Major bugfixes (resource management):
282 - If a directory authority is down, skip it when deciding where to get
283 networkstatus objects or descriptors. Otherwise we keep asking
284 every 10 seconds forever. Fixes bug 384.
285 - Count it as a failure if we fetch a valid network-status but we
286 don't want to keep it. Otherwise we'll keep fetching it and keep
287 not wanting to keep it. Fixes part of bug 422.
288 - If all of our dirservers have given us bad or no networkstatuses
289 lately, then stop hammering them once per minute even when we
290 think they're failed. Fixes another part of bug 422.
293 - Actually set the purpose correctly for descriptors inserted with
295 - When we have k non-v2 authorities in our DirServer config,
296 we ignored the last k authorities in the list when updating our
298 - Correctly back-off from requesting router descriptors that we are
299 having a hard time downloading.
300 - Read resolv.conf files correctly on platforms where read() returns
301 partial results on small file reads.
302 - Don't rebuild the entire router store every time we get 32K of
303 routers: rebuild it when the journal gets very large, or when
304 the gaps in the store get very large.
307 - When routers publish SVN revisions in their router descriptors,
308 authorities now include those versions correctly in networkstatus
310 - Warn when using a version of libevent before 1.3b to run a server on
311 OSX or BSD: these versions interact badly with userspace threads.
314 Changes in version 0.1.2.13 - 2007-04-24
316 - Fix a memory leak when we ask for "all" networkstatuses and we
317 get one we don't recognize.
318 - Add more asserts to hunt down bug 417.
319 - Disable kqueue on OS X 10.3 and earlier, to fix bug 371.
322 Changes in version 0.1.2.12-rc - 2007-03-16
324 - Fix an infinite loop introduced in 0.1.2.7-alpha when we serve
325 directory information requested inside Tor connections (i.e. via
326 begin_dir cells). It only triggered when the same connection was
327 serving other data at the same time. Reported by seeess.
330 - When creating a circuit via the controller, send a 'launched'
331 event when we're done, so we follow the spec better.
334 Changes in version 0.1.2.11-rc - 2007-03-15
335 o Minor bugfixes (controller), reported by daejees:
336 - Correct the control spec to match how the code actually responds
337 to 'getinfo addr-mappings/*'.
338 - The control spec described a GUARDS event, but the code
339 implemented a GUARD event. Standardize on GUARD, but let people
343 Changes in version 0.1.2.10-rc - 2007-03-07
344 o Major bugfixes (Windows):
345 - Do not load the NT services library functions (which may not exist)
346 just to detect if we're a service trying to shut down. Now we run
347 on Win98 and friends again.
349 o Minor bugfixes (other):
350 - Clarify a couple of log messages.
351 - Fix a misleading socks5 error number.
354 Changes in version 0.1.2.9-rc - 2007-03-02
355 o Major bugfixes (Windows):
356 - On MinGW, use "%I64u" to printf/scanf 64-bit integers, instead
357 of the usual GCC "%llu". This prevents a bug when saving 64-bit
358 int configuration values: the high-order 32 bits would get
359 truncated. In particular, we were being bitten by the default
360 MaxAdvertisedBandwidth of 128 TB turning into 0. (Fixes bug 400
361 and maybe also bug 397.)
363 o Minor bugfixes (performance):
364 - Use OpenSSL's AES implementation on platforms where it's faster.
365 This could save us as much as 10% CPU usage.
367 o Minor bugfixes (server):
368 - Do not rotate onion key immediately after setting it for the first
371 o Minor bugfixes (directory authorities):
372 - Stop calling servers that have been hibernating for a long time
373 "stable". Also, stop letting hibernating or obsolete servers affect
374 uptime and bandwidth cutoffs.
375 - Stop listing hibernating servers in the v1 directory.
377 o Minor bugfixes (hidden services):
378 - Upload hidden service descriptors slightly less often, to reduce
381 o Minor bugfixes (other):
382 - Fix an assert that could trigger if a controller quickly set then
383 cleared EntryNodes. (Bug found by Udo van den Heuvel.)
384 - On architectures where sizeof(int)>4, still clamp declarable bandwidth
386 - Fix a potential race condition in the rpm installer. Found by
388 - Try to fix eventdns warnings once and for all: do not treat a dns rcode
389 of 2 as indicating that the server is completely bad; it sometimes
390 means that the server is just bad for the request in question. (may fix
391 the last of bug 326.)
392 - Disable encrypted directory connections when we don't have a server
393 descriptor for the destination. We'll get this working again in
397 Changes in version 0.1.2.8-beta - 2007-02-26
398 o Major bugfixes (crashes):
399 - Stop crashing when the controller asks us to resetconf more than
400 one config option at once. (Vidalia 0.0.11 does this.)
401 - Fix a crash that happened on Win98 when we're given command-line
402 arguments: don't try to load NT service functions from advapi32.dll
403 except when we need them. (Bug introduced in 0.1.2.7-alpha;
405 - Fix a longstanding obscure crash bug that could occur when
406 we run out of DNS worker processes. (Resolves bug 390.)
408 o Major bugfixes (hidden services):
409 - Correctly detect whether hidden service descriptor downloads are
410 in-progress. (Suggested by Karsten Loesing; fixes bug 399.)
412 o Major bugfixes (accounting):
413 - When we start during an accounting interval before it's time to wake
414 up, remember to wake up at the correct time. (May fix bug 342.)
416 o Minor bugfixes (controller):
417 - Give the controller END_STREAM_REASON_DESTROY events _before_ we
418 clear the corresponding on_circuit variable, and remember later
419 that we don't need to send a redundant CLOSED event. (Resolves part
421 - Report events where a resolve succeeded or where we got a socks
422 protocol error correctly, rather than calling both of them
424 - Change reported stream target addresses to IP consistently when
425 we finally get the IP from an exit node.
426 - Send log messages to the controller even if they happen to be very
429 o Minor bugfixes (other):
430 - Display correct results when reporting which versions are
431 recommended, and how recommended they are. (Resolves bug 383.)
432 - Improve our estimates for directory bandwidth to be less random:
433 guess that an unrecognized directory will have the average bandwidth
434 from all known directories, not that it will have the average
435 bandwidth from those directories earlier than it on the list.
436 - If we start a server with ClientOnly 1, then set ClientOnly to 0
437 and hup, stop triggering an assert based on an empty onion_key.
438 - On platforms with no working mmap() equivalent, don't warn the
439 user when cached-routers doesn't exist.
440 - Warn the user when mmap() [or its equivalent] fails for some reason
441 other than file-not-found.
442 - Don't warn the user when cached-routers.new doesn't exist: that's
443 perfectly fine when starting up for the first time.
444 - When EntryNodes are configured, rebuild the guard list to contain,
445 in order: the EntryNodes that were guards before; the rest of the
446 EntryNodes; the nodes that were guards before.
447 - Mask out all signals in sub-threads; only the libevent signal
448 handler should be processing them. This should prevent some crashes
449 on some machines using pthreads. (Patch from coderman.)
450 - Fix switched arguments on memset in the implementation of
451 tor_munmap() for systems with no mmap() call.
452 - When Tor receives a router descriptor that it asked for, but
453 no longer wants (because it has received fresh networkstatuses
454 in the meantime), do not warn the user. Cache the descriptor if
455 we're a cache; drop it if we aren't.
456 - Make earlier entry guards _really_ get retried when the network
458 - On a malformed DNS reply, always give an error to the corresponding
460 - Build with recent libevents on platforms that do not define the
461 nonstandard types "u_int8_t" and friends.
463 o Minor features (controller):
464 - Warn the user when an application uses the obsolete binary v0
465 control protocol. We're planning to remove support for it during
466 the next development series, so it's good to give people some
468 - Add STREAM_BW events to report per-entry-stream bandwidth
469 use. (Patch from Robert Hogan.)
470 - Rate-limit SIGNEWNYM signals in response to controllers that
471 impolitely generate them for every single stream. (Patch from
472 mwenge; closes bug 394.)
473 - Make REMAP stream events have a SOURCE (cache or exit), and
474 make them generated in every case where we get a successful
475 connected or resolved cell.
477 o Minor bugfixes (performance):
478 - Call router_have_min_dir_info half as often. (This is showing up in
479 some profiles, but not others.)
480 - When using GCC, make log_debug never get called at all, and its
481 arguments never get evaluated, when no debug logs are configured.
482 (This is showing up in some profiles, but not others.)
485 - Remove some never-implemented options. Mark PathlenCoinWeight as
487 - Implement proposal 106: Stop requiring clients to have well-formed
488 certificates; stop checking nicknames in certificates. (Clients
489 have certificates so that they can look like Tor servers, but in
490 the future we might want to allow them to look like regular TLS
491 clients instead. Nicknames in certificates serve no purpose other
492 than making our protocol easier to recognize on the wire.)
493 - Revise messages on handshake failure again to be even more clear about
494 which are incoming connections and which are outgoing.
495 - Discard any v1 directory info that's over 1 month old (for
496 directories) or over 1 week old (for running-routers lists).
497 - Do not warn when individual nodes in the configuration's EntryNodes,
498 ExitNodes, etc are down: warn only when all possible nodes
499 are down. (Fixes bug 348.)
500 - Always remove expired routers and networkstatus docs before checking
501 whether we have enough information to build circuits. (Fixes
503 - Put a lower-bound on MaxAdvertisedBandwidth.
506 Changes in version 0.1.2.7-alpha - 2007-02-06
507 o Major bugfixes (rate limiting):
508 - Servers decline directory requests much more aggressively when
509 they're low on bandwidth. Otherwise they end up queueing more and
510 more directory responses, which can't be good for latency.
511 - But never refuse directory requests from local addresses.
512 - Fix a memory leak when sending a 503 response for a networkstatus
514 - Be willing to read or write on local connections (e.g. controller
515 connections) even when the global rate limiting buckets are empty.
516 - If our system clock jumps back in time, don't publish a negative
517 uptime in the descriptor. Also, don't let the global rate limiting
518 buckets go absurdly negative.
519 - Flush local controller connection buffers periodically as we're
520 writing to them, so we avoid queueing 4+ megabytes of data before
523 o Major bugfixes (NT services):
524 - Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
525 command-line flag so that admins can override the default by saying
526 "tor --service install --user "SomeUser"". This will not affect
527 existing installed services. Also, warn the user that the service
528 will look for its configuration file in the service user's
529 %appdata% directory. (We can't do the 'hardwire the user's appdata
530 directory' trick any more, since we may not have read access to that
533 o Major bugfixes (other):
534 - Previously, we would cache up to 16 old networkstatus documents
535 indefinitely, if they came from nontrusted authorities. Now we
536 discard them if they are more than 10 days old.
537 - Fix a crash bug in the presence of DNS hijacking (reported by Andrew
539 - Detect and reject malformed DNS responses containing circular
541 - If exits are rare enough that we're not marking exits as guards,
542 ignore exit bandwidth when we're deciding the required bandwidth
544 - When we're handling a directory connection tunneled over Tor,
545 don't fill up internal memory buffers with all the data we want
546 to tunnel; instead, only add it if the OR connection that will
547 eventually receive it has some room for it. (This can lead to
548 slowdowns in tunneled dir connections; a better solution will have
551 o Minor bugfixes (dns):
552 - Add some defensive programming to eventdns.c in an attempt to catch
553 possible memory-stomping bugs.
554 - Detect and reject DNS replies containing IPv4 or IPv6 records with
555 an incorrect number of bytes. (Previously, we would ignore the
557 - Fix as-yet-unused reverse IPv6 lookup code so it sends nybbles
558 in the correct order, and doesn't crash.
559 - Free memory held in recently-completed DNS lookup attempts on exit.
560 This was not a memory leak, but may have been hiding memory leaks.
561 - Handle TTL values correctly on reverse DNS lookups.
562 - Treat failure to parse resolv.conf as an error.
564 o Minor bugfixes (other):
565 - Fix crash with "tor --list-fingerprint" (reported by seeess).
566 - When computing clock skew from directory HTTP headers, consider what
567 time it was when we finished asking for the directory, not what
569 - Expire socks connections if they spend too long waiting for the
570 handshake to finish. Previously we would let them sit around for
571 days, if the connecting application didn't close them either.
572 - And if the socks handshake hasn't started, don't send a
573 "DNS resolve socks failed" handshake reply; just close it.
574 - Stop using C functions that OpenBSD's linker doesn't like.
575 - Don't launch requests for descriptors unless we have networkstatuses
576 from at least half of the authorities. This delays the first
577 download slightly under pathological circumstances, but can prevent
578 us from downloading a bunch of descriptors we don't need.
579 - Do not log IPs with TLS failures for incoming TLS
580 connections. (Fixes bug 382.)
581 - If the user asks to use invalid exit nodes, be willing to use
583 - Stop using the reserved ac_cv namespace in our configure script.
584 - Call stat() slightly less often; use fstat() when possible.
585 - Refactor the way we handle pending circuits when an OR connection
586 completes or fails, in an attempt to fix a rare crash bug.
587 - Only rewrite a conn's address based on X-Forwarded-For: headers
588 if it's a parseable public IP address; and stop adding extra quotes
589 to the resulting address.
592 - Weight directory requests by advertised bandwidth. Now we can
593 let servers enable write limiting but still allow most clients to
594 succeed at their directory requests. (We still ignore weights when
595 choosing a directory authority; I hope this is a feature.)
598 - Create a new file ReleaseNotes which was the old ChangeLog. The
599 new ChangeLog file now includes the summaries for all development
601 - Check for addresses with invalid characters at the exit as well
602 as at the client, and warn less verbosely when they fail. You can
603 override this by setting ServerDNSAllowNonRFC953Addresses to 1.
604 - Adapt a patch from goodell to let the contrib/exitlist script
605 take arguments rather than require direct editing.
606 - Inform the server operator when we decide not to advertise a
607 DirPort due to AccountingMax enabled or a low BandwidthRate. It
608 was confusing Zax, so now we're hopefully more helpful.
609 - Bring us one step closer to being able to establish an encrypted
610 directory tunnel without knowing a descriptor first. Still not
611 ready yet. As part of the change, now assume we can use a
612 create_fast cell if we don't know anything about a router.
613 - Allow exit nodes to use nameservers running on ports other than 53.
614 - Servers now cache reverse DNS replies.
615 - Add an --ignore-missing-torrc command-line option so that we can
616 get the "use sensible defaults if the configuration file doesn't
617 exist" behavior even when specifying a torrc location on the command
620 o Minor features (controller):
621 - Track reasons for OR connection failure; make these reasons
622 available via the controller interface. (Patch from Mike Perry.)
623 - Add a SOCKS_BAD_HOSTNAME client status event so controllers
624 can learn when clients are sending malformed hostnames to Tor.
625 - Clean up documentation for controller status events.
626 - Add a REMAP status to stream events to note that a stream's
627 address has changed because of a cached address or a MapAddress
631 Changes in version 0.1.2.6-alpha - 2007-01-09
633 - Fix an assert error introduced in 0.1.2.5-alpha: if a single TLS
634 connection handles more than 4 gigs in either direction, we crash.
635 - Fix an assert error introduced in 0.1.2.5-alpha: if we're an
636 advertised exit node, somebody might try to exit from us when
637 we're bootstrapping and before we've built our descriptor yet.
638 Refuse the connection rather than crashing.
641 - Warn if we (as a server) find that we've resolved an address that we
642 weren't planning to resolve.
643 - Warn that using select() on any libevent version before 1.1 will be
644 unnecessarily slow (even for select()).
645 - Flush ERR-level controller status events just like we currently
646 flush ERR-level log events, so that a Tor shutdown doesn't prevent
647 the controller from learning about current events.
649 o Minor features (more controller status events):
650 - Implement EXTERNAL_ADDRESS server status event so controllers can
651 learn when our address changes.
652 - Implement BAD_SERVER_DESCRIPTOR server status event so controllers
653 can learn when directories reject our descriptor.
654 - Implement SOCKS_UNKNOWN_PROTOCOL client status event so controllers
655 can learn when a client application is speaking a non-socks protocol
657 - Implement DANGEROUS_SOCKS client status event so controllers
658 can learn when a client application is leaking DNS addresses.
659 - Implement BUG general status event so controllers can learn when
660 Tor is unhappy about its internal invariants.
661 - Implement CLOCK_SKEW general status event so controllers can learn
662 when Tor thinks the system clock is set incorrectly.
663 - Implement GOOD_SERVER_DESCRIPTOR and ACCEPTED_SERVER_DESCRIPTOR
664 server status events so controllers can learn when their descriptors
665 are accepted by a directory.
666 - Implement CHECKING_REACHABILITY and REACHABILITY_{SUCCEEDED|FAILED}
667 server status events so controllers can learn about Tor's progress in
668 deciding whether it's reachable from the outside.
669 - Implement BAD_LIBEVENT general status event so controllers can learn
670 when we have a version/method combination in libevent that needs to
672 - Implement NAMESERVER_STATUS, NAMESERVER_ALL_DOWN, DNS_HIJACKED,
673 and DNS_USELESS server status events so controllers can learn
674 about changes to DNS server status.
676 o Minor features (directory):
677 - Authorities no longer recommend exits as guards if this would shift
678 too much load to the exit nodes.
681 Changes in version 0.1.2.5-alpha - 2007-01-06
683 - Enable write limiting as well as read limiting. Now we sacrifice
684 capacity if we're pushing out lots of directory traffic, rather
685 than overrunning the user's intended bandwidth limits.
686 - Include TLS overhead when counting bandwidth usage; previously, we
687 would count only the bytes sent over TLS, but not the bytes used
689 - Support running the Tor service with a torrc not in the same
690 directory as tor.exe and default to using the torrc located in
691 the %appdata%\Tor\ of the user who installed the service. Patch
693 - Servers now check for the case when common DNS requests are going to
694 wildcarded addresses (i.e. all getting the same answer), and change
695 their exit policy to reject *:* if it's happening.
696 - Implement BEGIN_DIR cells, so we can connect to the directory
697 server via TLS to do encrypted directory requests rather than
698 plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
699 config options if you like.
701 o Minor features (config and docs):
702 - Start using the state file to store bandwidth accounting data:
703 the bw_accounting file is now obsolete. We'll keep generating it
704 for a while for people who are still using 0.1.2.4-alpha.
705 - Try to batch changes to the state file so that we do as few
706 disk writes as possible while still storing important things in
708 - The state file and the bw_accounting file get saved less often when
709 the AvoidDiskWrites config option is set.
710 - Make PIDFile work on Windows (untested).
711 - Add internal descriptions for a bunch of configuration options:
712 accessible via controller interface and in comments in saved
714 - Reject *:563 (NNTPS) in the default exit policy. We already reject
715 NNTP by default, so this seems like a sensible addition.
716 - Clients now reject hostnames with invalid characters. This should
717 avoid some inadvertent info leaks. Add an option
718 AllowNonRFC953Hostnames to disable this behavior, in case somebody
719 is running a private network with hosts called @, !, and #.
720 - Add a maintainer script to tell us which options are missing
721 documentation: "make check-docs".
722 - Add a new address-spec.txt document to describe our special-case
723 addresses: .exit, .onion, and .noconnnect.
725 o Minor features (DNS):
726 - Ongoing work on eventdns infrastructure: now it has dns server
727 and ipv6 support. One day Tor will make use of it.
728 - Add client-side caching for reverse DNS lookups.
729 - Add support to tor-resolve tool for reverse lookups and SOCKS5.
730 - When we change nameservers or IP addresses, reset and re-launch
731 our tests for DNS hijacking.
733 o Minor features (directory):
734 - Authorities now specify server versions in networkstatus. This adds
735 about 2% to the size of compressed networkstatus docs, and allows
736 clients to tell which servers support BEGIN_DIR and which don't.
737 The implementation is forward-compatible with a proposed future
738 protocol version scheme not tied to Tor versions.
739 - DirServer configuration lines now have an orport= option so
740 clients can open encrypted tunnels to the authorities without
741 having downloaded their descriptors yet. Enabled for moria1,
742 moria2, tor26, and lefkada now in the default configuration.
743 - Directory servers are more willing to send a 503 "busy" if they
744 are near their write limit, especially for v1 directory requests.
745 Now they can use their limited bandwidth for actual Tor traffic.
746 - Clients track responses with status 503 from dirservers. After a
747 dirserver has given us a 503, we try not to use it until an hour has
748 gone by, or until we have no dirservers that haven't given us a 503.
749 - When we get a 503 from a directory, and we're not a server, we don't
750 count the failure against the total number of failures allowed
751 for the thing we're trying to download.
752 - Report X-Your-Address-Is correctly from tunneled directory
753 connections; don't report X-Your-Address-Is when it's an internal
754 address; and never believe reported remote addresses when they're
756 - Protect against an unlikely DoS attack on directory servers.
757 - Add a BadDirectory flag to network status docs so that authorities
758 can (eventually) tell clients about caches they believe to be
761 o Minor features (controller):
762 - Have GETINFO dir/status/* work on hosts with DirPort disabled.
763 - Reimplement GETINFO so that info/names stays in sync with the
765 - Implement "GETINFO fingerprint".
766 - Implement "SETEVENTS GUARD" so controllers can get updates on
767 entry guard status as it changes.
769 o Minor features (clean up obsolete pieces):
770 - Remove some options that have been deprecated since at least
771 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
772 SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
774 - We no longer look for identity and onion keys in "identity.key" and
775 "onion.key" -- these were replaced by secret_id_key and
776 secret_onion_key in 0.0.8pre1.
777 - We no longer require unrecognized directory entries to be
780 o Major bugfixes (security):
781 - Stop sending the HttpProxyAuthenticator string to directory
782 servers when directory connections are tunnelled through Tor.
783 - Clients no longer store bandwidth history in the state file.
784 - Do not log introduction points for hidden services if SafeLogging
786 - When generating bandwidth history, round down to the nearest
787 1k. When storing accounting data, round up to the nearest 1k.
788 - When we're running as a server, remember when we last rotated onion
789 keys, so that we will rotate keys once they're a week old even if
790 we never stay up for a week ourselves.
792 o Major bugfixes (other):
793 - Fix a longstanding bug in eventdns that prevented the count of
794 timed-out resolves from ever being reset. This bug caused us to
795 give up on a nameserver the third time it timed out, and try it
796 10 seconds later... and to give up on it every time it timed out
798 - Take out the '5 second' timeout from the connection retry
799 schedule. Now the first connect attempt will wait a full 10
800 seconds before switching to a new circuit. Perhaps this will help
801 a lot. Based on observations from Mike Perry.
802 - Fix a bug on the Windows implementation of tor_mmap_file() that
803 would prevent the cached-routers file from ever loading. Reported
807 - Fix an assert failure when a directory authority sets
808 AuthDirRejectUnlisted and then receives a descriptor from an
809 unlisted router. Reported by seeess.
810 - Avoid a double-free when parsing malformed DirServer lines.
811 - Fix a bug when a BSD-style PF socket is first used. Patch from
813 - Fix a bug in 0.1.2.2-alpha that prevented clients from asking
814 to resolve an address at a given exit node even when they ask for
816 - Servers no longer ever list themselves in their "family" line,
817 even if configured to do so. This makes it easier to configure
818 family lists conveniently.
819 - When running as a server, don't fall back to 127.0.0.1 when no
820 nameservers are configured in /etc/resolv.conf; instead, make the
821 user fix resolv.conf or specify nameservers explicitly. (Resolves
823 - Stop accepting certain malformed ports in configured exit policies.
824 - Don't re-write the fingerprint file every restart, unless it has
826 - Stop warning when a single nameserver fails: only warn when _all_ of
827 our nameservers have failed. Also, when we only have one nameserver,
828 raise the threshold for deciding that the nameserver is dead.
829 - Directory authorities now only decide that routers are reachable
830 if their identity keys are as expected.
831 - When the user uses bad syntax in the Log config line, stop
832 suggesting other bad syntax as a replacement.
833 - Correctly detect ipv6 DNS capability on OpenBSD.
835 o Minor bugfixes (controller):
836 - Report the circuit number correctly in STREAM CLOSED events. Bug
837 reported by Mike Perry.
838 - Do not report bizarre values for results of accounting GETINFOs
839 when the last second's write or read exceeds the allotted bandwidth.
840 - Report "unrecognized key" rather than an empty string when the
841 controller tries to fetch a networkstatus that doesn't exist.
844 Changes in version 0.1.1.26 - 2006-12-14
846 - Stop sending the HttpProxyAuthenticator string to directory
847 servers when directory connections are tunnelled through Tor.
848 - Clients no longer store bandwidth history in the state file.
849 - Do not log introduction points for hidden services if SafeLogging
853 - Fix an assert failure when a directory authority sets
854 AuthDirRejectUnlisted and then receives a descriptor from an
855 unlisted router (reported by seeess).
858 Changes in version 0.1.2.4-alpha - 2006-12-03
860 - Add support for using natd; this allows FreeBSDs earlier than
861 5.1.2 to have ipfw send connections through Tor without using
862 SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
865 - Make all connections to addresses of the form ".noconnect"
866 immediately get closed. This lets application/controller combos
867 successfully test whether they're talking to the same Tor by
868 watching for STREAM events.
869 - Make cross.sh cross-compilation script work even when autogen.sh
870 hasn't been run. (Patch from Michael Mohr.)
871 - Statistics dumped by -USR2 now include a breakdown of public key
872 operations, for profiling.
875 - Fix a major leak when directory authorities parse their
876 approved-routers list, a minor memory leak when we fail to pick
877 an exit node, and a few rare leaks on errors.
878 - Handle TransPort connections even when the server sends data before
879 the client sends data. Previously, the connection would just hang
880 until the client sent data. (Patch from tup based on patch from
882 - Avoid assert failure when our cached-routers file is empty on
886 - Don't log spurious warnings when we see a circuit close reason we
887 don't recognize; it's probably just from a newer version of Tor.
888 - Have directory authorities allow larger amounts of drift in uptime
889 without replacing the server descriptor: previously, a server that
890 restarted every 30 minutes could have 48 "interesting" descriptors
892 - Start linking to the Tor specification and Tor reference manual
893 correctly in the Windows installer.
894 - Add Vidalia to the OS X uninstaller script, so when we uninstall
895 Tor/Privoxy we also uninstall Vidalia.
896 - Resume building on Irix64, and fix a lot of warnings from its
898 - Don't corrupt last_guessed_ip in router_new_address_suggestion()
899 when we're running as a client.
902 Changes in version 0.1.1.25 - 2006-11-04
904 - When a client asks us to resolve (rather than connect to)
905 an address, and we have a cached answer, give them the cached
906 answer. Previously, we would give them no answer at all.
907 - We were building exactly the wrong circuits when we predict
908 hidden service requirements, meaning Tor would have to build all
909 its circuits on demand.
910 - If none of our live entry guards have a high uptime, but we
911 require a guard with a high uptime, try adding a new guard before
912 we give up on the requirement. This patch should make long-lived
913 connections more stable on average.
914 - When testing reachability of our DirPort, don't launch new
915 tests when there's already one in progress -- unreachable
916 servers were stacking up dozens of testing streams.
919 - When the user sends a NEWNYM signal, clear the client-side DNS
920 cache too. Otherwise we continue to act on previous information.
923 - Avoid a memory corruption bug when creating a hash table for
925 - Avoid possibility of controller-triggered crash when misusing
926 certain commands from a v0 controller on platforms that do not
927 handle printf("%s",NULL) gracefully.
928 - Avoid infinite loop on unexpected controller input.
929 - Don't log spurious warnings when we see a circuit close reason we
930 don't recognize; it's probably just from a newer version of Tor.
931 - Add Vidalia to the OS X uninstaller script, so when we uninstall
932 Tor/Privoxy we also uninstall Vidalia.
935 Changes in version 0.1.2.3-alpha - 2006-10-29
937 - Prepare for servers to publish descriptors less often: never
938 discard a descriptor simply for being too old until either it is
939 recommended by no authorities, or until we get a better one for
940 the same router. Make caches consider retaining old recommended
941 routers for even longer.
942 - If most authorities set a BadExit flag for a server, clients
943 don't think of it as a general-purpose exit. Clients only consider
944 authorities that advertise themselves as listing bad exits.
945 - Directory servers now provide 'Pragma: no-cache' and 'Expires'
946 headers for content, so that we can work better in the presence of
947 caching HTTP proxies.
948 - Allow authorities to list nodes as bad exits by fingerprint or by
951 o Minor features, controller:
952 - Add a REASON field to CIRC events; for backward compatibility, this
953 field is sent only to controllers that have enabled the extended
954 event format. Also, add additional reason codes to explain why
955 a given circuit has been destroyed or truncated. (Patches from
957 - Add a REMOTE_REASON field to extended CIRC events to tell the
958 controller about why a remote OR told us to close a circuit.
959 - Stream events also now have REASON and REMOTE_REASON fields,
960 working much like those for circuit events.
961 - There's now a GETINFO ns/... field so that controllers can ask Tor
962 about the current status of a router.
963 - A new event type "NS" to inform a controller when our opinion of
964 a router's status has changed.
965 - Add a GETINFO events/names and GETINFO features/names so controllers
966 can tell which events and features are supported.
967 - A new CLEARDNSCACHE signal to allow controllers to clear the
968 client-side DNS cache without expiring circuits.
971 - When the user sends a NEWNYM signal, clear the client-side DNS
972 cache too. Otherwise we continue to act on previous information.
975 - Avoid sending junk to controllers or segfaulting when a controller
976 uses EVENT_NEW_DESC with verbose nicknames.
977 - Stop triggering asserts if the controller tries to extend hidden
978 service circuits (reported by mwenge).
979 - Avoid infinite loop on unexpected controller input.
980 - When the controller does a "GETINFO network-status", tell it
981 about even those routers whose descriptors are very old, and use
982 long nicknames where appropriate.
983 - Change NT service functions to be loaded on demand. This lets us
984 build with MinGW without breaking Tor for Windows 98 users.
985 - Do DirPort reachability tests less often, since a single test
986 chews through many circuits before giving up.
987 - In the hidden service example in torrc.sample, stop recommending
988 esoteric and discouraged hidden service options.
989 - When stopping an NT service, wait up to 10 sec for it to actually
990 stop. (Patch from Matt Edman; resolves bug 295.)
991 - Fix handling of verbose nicknames with ORCONN controller events:
992 make them show up exactly when requested, rather than exactly when
994 - When reporting verbose nicknames in entry_guards_getinfo(), avoid
995 printing a duplicate "$" in the keys we send (reported by mwenge).
996 - Correctly set maximum connection limit on Cygwin. (This time
998 - Try to detect Windows correctly when cross-compiling.
999 - Detect the size of the routers file correctly even if it is
1000 corrupted (on systems without mmap) or not page-aligned (on systems
1001 with mmap). This bug was harmless.
1002 - Sometimes we didn't bother sending a RELAY_END cell when an attempt
1003 to open a stream fails; now we do in more cases. This should
1004 make clients able to find a good exit faster in some cases, since
1005 unhandleable requests will now get an error rather than timing out.
1006 - Resolve two memory leaks when rebuilding the on-disk router cache
1007 (reported by fookoowa).
1008 - Clean up minor code warnings suggested by the MIPSpro C compiler,
1009 and reported by some Centos users.
1010 - Controller signals now work on non-Unix platforms that don't define
1011 SIGUSR1 and SIGUSR2 the way we expect.
1012 - Patch from Michael Mohr to contrib/cross.sh, so it checks more
1013 values before failing, and always enables eventdns.
1014 - Libevent-1.2 exports, but does not define in its headers, strlcpy.
1015 Try to fix this in configure.in by checking for most functions
1016 before we check for libevent.
1019 Changes in version 0.1.2.2-alpha - 2006-10-07
1021 - Make our async eventdns library on-by-default for Tor servers,
1022 and plan to deprecate the separate dnsworker threads.
1023 - Add server-side support for "reverse" DNS lookups (using PTR
1024 records so clients can determine the canonical hostname for a given
1025 IPv4 address). Only supported by servers using eventdns; servers
1026 now announce in their descriptors whether they support eventdns.
1027 - Specify and implement client-side SOCKS5 interface for reverse DNS
1028 lookups (see doc/socks-extensions.txt).
1029 - Add a BEGIN_DIR relay cell type for an easier in-protocol way to
1030 connect to directory servers through Tor. Previously, clients needed
1031 to find Tor exits to make private connections to directory servers.
1032 - Avoid choosing Exit nodes for entry or middle hops when the
1033 total bandwidth available from non-Exit nodes is much higher than
1034 the total bandwidth available from Exit nodes.
1035 - Workaround for name servers (like Earthlink's) that hijack failing
1036 DNS requests and replace the no-such-server answer with a "helpful"
1037 redirect to an advertising-driven search portal. Also work around
1038 DNS hijackers who "helpfully" decline to hijack known-invalid
1039 RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
1040 lets you turn it off.
1041 - Send out a burst of long-range padding cells once we've established
1042 that we're reachable. Spread them over 4 circuits, so hopefully
1043 a few will be fast. This exercises our bandwidth and bootstraps
1044 us into the directory more quickly.
1046 o New/improved config options:
1047 - Add new config option "ResolvConf" to let the server operator
1048 choose an alternate resolve.conf file when using eventdns.
1049 - Add an "EnforceDistinctSubnets" option to control our "exclude
1050 servers on the same /16" behavior. It's still on by default; this
1051 is mostly for people who want to operate private test networks with
1052 all the machines on the same subnet.
1053 - If one of our entry guards is on the ExcludeNodes list, or the
1054 directory authorities don't think it's a good guard, treat it as
1055 if it were unlisted: stop using it as a guard, and throw it off
1056 the guards list if it stays that way for a long time.
1057 - Allow directory authorities to be marked separately as authorities
1058 for the v1 directory protocol, the v2 directory protocol, and
1059 as hidden service directories, to make it easier to retire old
1060 authorities. V1 authorities should set "HSAuthoritativeDir 1"
1061 to continue being hidden service authorities too.
1062 - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
1064 o Minor features, controller:
1065 - Fix CIRC controller events so that controllers can learn the
1066 identity digests of non-Named servers used in circuit paths.
1067 - Let controllers ask for more useful identifiers for servers. Instead
1068 of learning identity digests for un-Named servers and nicknames
1069 for Named servers, the new identifiers include digest, nickname,
1070 and indication of Named status. Off by default; see control-spec.txt
1071 for more information.
1072 - Add a "getinfo address" controller command so it can display Tor's
1073 best guess to the user.
1074 - New controller event to alert the controller when our server
1075 descriptor has changed.
1076 - Give more meaningful errors on controller authentication failure.
1078 o Minor features, other:
1079 - When asked to resolve a hostname, don't use non-exit servers unless
1080 requested to do so. This allows servers with broken DNS to be
1081 useful to the network.
1082 - Divide eventdns log messages into warn and info messages.
1083 - Reserve the nickname "Unnamed" for routers that can't pick
1084 a hostname: any router can call itself Unnamed; directory
1085 authorities will never allocate Unnamed to any particular router;
1086 clients won't believe that any router is the canonical Unnamed.
1087 - Only include function names in log messages for info/debug messages.
1088 For notice/warn/err, the content of the message should be clear on
1089 its own, and printing the function name only confuses users.
1090 - Avoid some false positives during reachability testing: don't try
1091 to test via a server that's on the same /24 as us.
1092 - If we fail to build a circuit to an intended enclave, and it's
1093 not mandatory that we use that enclave, stop wanting it.
1094 - When eventdns is enabled, allow multithreaded builds on NetBSD and
1095 OpenBSD. (We had previously disabled threads on these platforms
1096 because they didn't have working thread-safe resolver functions.)
1098 o Major bugfixes, anonymity/security:
1099 - If a client asked for a server by name, and there's a named server
1100 in our network-status but we don't have its descriptor yet, we
1101 could return an unnamed server instead.
1102 - Fix NetBSD bug that could allow someone to force uninitialized RAM
1103 to be sent to a server's DNS resolver. This only affects NetBSD
1104 and other platforms that do not bounds-check tolower().
1105 - Reject (most) attempts to use Tor circuits with length one. (If
1106 many people start using Tor as a one-hop proxy, exit nodes become
1107 a more attractive target for compromise.)
1108 - Just because your DirPort is open doesn't mean people should be
1109 able to remotely teach you about hidden service descriptors. Now
1110 only accept rendezvous posts if you've got HSAuthoritativeDir set.
1112 o Major bugfixes, other:
1113 - Don't crash on race condition in dns.c: tor_assert(!resolve->expire)
1114 - When a client asks the server to resolve (not connect to)
1115 an address, and it has a cached answer, give them the cached answer.
1116 Previously, the server would give them no answer at all.
1117 - Allow really slow clients to not hang up five minutes into their
1118 directory downloads (suggested by Adam J. Richter).
1119 - We were building exactly the wrong circuits when we anticipated
1120 hidden service requirements, meaning Tor would have to build all
1121 its circuits on demand.
1122 - Avoid crashing when we mmap a router cache file of size 0.
1123 - When testing reachability of our DirPort, don't launch new
1124 tests when there's already one in progress -- unreachable
1125 servers were stacking up dozens of testing streams.
1127 o Minor bugfixes, correctness:
1128 - If we're a directory mirror and we ask for "all" network status
1129 documents, we would discard status documents from authorities
1131 - Avoid a memory corruption bug when creating a hash table for
1133 - Avoid controller-triggered crash when misusing certain commands
1134 from a v0 controller on platforms that do not handle
1135 printf("%s",NULL) gracefully.
1136 - Don't crash when a controller sends a third argument to an
1137 "extendcircuit" request.
1138 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
1139 response; fix error code when "getinfo dir/status/" fails.
1140 - Avoid crash when telling controller stream-status and a stream
1142 - Patch from Adam Langley to fix assert() in eventdns.c.
1143 - Fix a debug log message in eventdns to say "X resolved to Y"
1144 instead of "X resolved to X".
1145 - Make eventdns give strings for DNS errors, not just error numbers.
1146 - Track unreachable entry guards correctly: don't conflate
1147 'unreachable by us right now' with 'listed as down by the directory
1148 authorities'. With the old code, if a guard was unreachable by
1149 us but listed as running, it would clog our guard list forever.
1150 - Behave correctly in case we ever have a network with more than
1151 2GB/s total advertised capacity.
1152 - Make TrackExitHosts case-insensitive, and fix the behavior of
1153 ".suffix" TrackExitHosts items to avoid matching in the middle of
1155 - Finally fix the openssl warnings from newer gccs that believe that
1156 ignoring a return value is okay, but casting a return value and
1157 then ignoring it is a sign of madness.
1158 - Prevent the contrib/exitlist script from printing the same
1159 result more than once.
1160 - Patch from Steve Hildrey: Generate network status correctly on
1161 non-versioning dirservers.
1162 - Don't listen to the X-Your-Address-Is hint if you did the lookup
1163 via Tor; otherwise you'll think you're the exit node's IP address.
1165 o Minor bugfixes, performance:
1166 - Two small performance improvements on parsing descriptors.
1167 - Major performance improvement on inserting descriptors: change
1168 algorithm from O(n^2) to O(n).
1169 - Make the common memory allocation path faster on machines where
1170 malloc(0) returns a pointer.
1171 - Start remembering X-Your-Address-Is directory hints even if you're
1172 a client, so you can become a server more smoothly.
1173 - Avoid duplicate entries on MyFamily line in server descriptor.
1175 o Packaging, features:
1176 - Remove architecture from OS X builds. The official builds are
1177 now universal binaries.
1178 - The Debian package now uses --verify-config when (re)starting,
1179 to distinguish configuration errors from other errors.
1180 - Update RPMs to require libevent 1.1b.
1182 o Packaging, bugfixes:
1183 - Patches so Tor builds with MinGW on Windows.
1184 - Patches so Tor might run on Cygwin again.
1185 - Resume building on non-gcc compilers and ancient gcc. Resume
1186 building with the -O0 compile flag. Resume building cleanly on
1188 - Run correctly on OS X platforms with case-sensitive filesystems.
1189 - Correct includes for net/if.h and net/pfvar.h on OpenBSD (from Tup).
1190 - Add autoconf checks so Tor can build on Solaris x86 again.
1193 - Documented (and renamed) ServerDNSSearchDomains and
1194 ServerDNSResolvConfFile options.
1195 - Be clearer that the *ListenAddress directives can be repeated
1199 Changes in version 0.1.1.24 - 2006-09-29
1201 - Allow really slow clients to not hang up five minutes into their
1202 directory downloads (suggested by Adam J. Richter).
1203 - Fix major performance regression from 0.1.0.x: instead of checking
1204 whether we have enough directory information every time we want to
1205 do something, only check when the directory information has changed.
1206 This should improve client CPU usage by 25-50%.
1207 - Don't crash if, after a server has been running for a while,
1208 it can't resolve its hostname.
1211 - Allow Tor to start when RunAsDaemon is set but no logs are set.
1212 - Don't crash when the controller receives a third argument to an
1213 "extendcircuit" request.
1214 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
1215 response; fix error code when "getinfo dir/status/" fails.
1216 - Fix configure.in to not produce broken configure files with
1217 more recent versions of autoconf. Thanks to Clint for his auto*
1219 - Fix security bug on NetBSD that could allow someone to force
1220 uninitialized RAM to be sent to a server's DNS resolver. This
1221 only affects NetBSD and other platforms that do not bounds-check
1223 - Warn user when using libevent 1.1a or earlier with win32 or kqueue
1224 methods: these are known to be buggy.
1225 - If we're a directory mirror and we ask for "all" network status
1226 documents, we would discard status documents from authorities
1230 Changes in version 0.1.2.1-alpha - 2006-08-27
1232 - Add "eventdns" async dns library from Adam Langley, tweaked to
1233 build on OSX and Windows. Only enabled if you pass the
1234 --enable-eventdns argument to configure.
1235 - Allow servers with no hostname or IP address to learn their
1236 IP address by asking the directory authorities. This code only
1237 kicks in when you would normally have exited with a "no address"
1238 error. Nothing's authenticated, so use with care.
1239 - Rather than waiting a fixed amount of time between retrying
1240 application connections, we wait only 5 seconds for the first,
1241 10 seconds for the second, and 15 seconds for each retry after
1242 that. Hopefully this will improve the expected user experience.
1243 - Patch from Tup to add support for transparent AP connections:
1244 this basically bundles the functionality of trans-proxy-tor
1245 into the Tor mainline. Now hosts with compliant pf/netfilter
1246 implementations can redirect TCP connections straight to Tor
1247 without diverting through SOCKS. Needs docs.
1248 - Busy directory servers save lots of memory by spooling server
1249 descriptors, v1 directories, and v2 networkstatus docs to buffers
1250 as needed rather than en masse. Also mmap the cached-routers
1251 files, so we don't need to keep the whole thing in memory too.
1252 - Automatically avoid picking more than one node from the same
1253 /16 network when constructing a circuit.
1254 - Revise and clean up the torrc.sample that we ship with; add
1255 a section for BandwidthRate and BandwidthBurst.
1258 - Split circuit_t into origin_circuit_t and or_circuit_t, and
1259 split connection_t into edge, or, dir, control, and base structs.
1260 These will save quite a bit of memory on busy servers, and they'll
1261 also help us track down bugs in the code and bugs in the spec.
1262 - Experimentally re-enable kqueue on OSX when using libevent 1.1b
1263 or later. Log when we are doing this, so we can diagnose it when
1264 it fails. (Also, recommend libevent 1.1b for kqueue and
1265 win32 methods; deprecate libevent 1.0b harder; make libevent
1266 recommendation system saner.)
1267 - Start being able to build universal binaries on OS X (thanks
1269 - Export the default exit policy via the control port, so controllers
1270 don't need to guess what it is / will be later.
1271 - Add a man page entry for ProtocolWarnings.
1272 - Add TestVia config option to the man page.
1273 - Remove even more protocol-related warnings from Tor server logs,
1274 such as bad TLS handshakes and malformed begin cells.
1275 - Stop fetching descriptors if you're not a dir mirror and you
1276 haven't tried to establish any circuits lately. [This currently
1277 causes some dangerous behavior, because when you start up again
1278 you'll use your ancient server descriptors.]
1279 - New DirPort behavior: if you have your dirport set, you download
1280 descriptors aggressively like a directory mirror, whether or not
1282 - Get rid of the router_retry_connections notion. Now routers
1283 no longer try to rebuild long-term connections to directory
1284 authorities, and directory authorities no longer try to rebuild
1285 long-term connections to all servers. We still don't hang up
1286 connections in these two cases though -- we need to look at it
1287 more carefully to avoid flapping, and we likely need to wait til
1288 0.1.1.x is obsolete.
1289 - Drop compatibility with obsolete Tors that permit create cells
1290 to have the wrong circ_id_type.
1291 - Re-enable per-connection rate limiting. Get rid of the "OP
1292 bandwidth" concept. Lay groundwork for "bandwidth classes" --
1293 separate global buckets that apply depending on what sort of conn
1295 - Start publishing one minute or so after we find our ORPort
1296 to be reachable. This will help reduce the number of descriptors
1297 we have for ourselves floating around, since it's quite likely
1298 other things (e.g. DirPort) will change during that minute too.
1299 - Fork the v1 directory protocol into its own spec document,
1300 and mark dir-spec.txt as the currently correct (v2) spec.
1303 - When we find our DirPort to be reachable, publish a new descriptor
1304 so we'll tell the world (reported by pnx).
1305 - Publish a new descriptor after we hup/reload. This is important
1306 if our config has changed such that we'll want to start advertising
1307 our DirPort now, etc.
1308 - Allow Tor to start when RunAsDaemon is set but no logs are set.
1309 - When we have a state file we cannot parse, tell the user and
1310 move it aside. Now we avoid situations where the user starts
1311 Tor in 1904, Tor writes a state file with that timestamp in it,
1312 the user fixes her clock, and Tor refuses to start.
1313 - Fix configure.in to not produce broken configure files with
1314 more recent versions of autoconf. Thanks to Clint for his auto*
1316 - "tor --verify-config" now exits with -1(255) or 0 depending on
1317 whether the config options are bad or good.
1318 - Resolve bug 321 when using dnsworkers: append a period to every
1319 address we resolve at the exit node, so that we do not accidentally
1320 pick up local addresses, and so that failing searches are retried
1321 in the resolver search domains. (This is already solved for
1322 eventdns.) (This breaks Blossom servers for now.)
1323 - If we are using an exit enclave and we can't connect, e.g. because
1324 its webserver is misconfigured to not listen on localhost, then
1325 back off and try connecting from somewhere else before we fail.
1328 - Start compiling on MinGW on Windows (patches from Mike Chiussi).
1329 - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
1330 - Fix bug 314: Tor clients issued "unsafe socks" warnings even
1331 when the IP address is mapped through MapAddress to a hostname.
1332 - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
1333 useless IPv6 DNS resolves.
1334 - Patch suggested by Karsten Loesing: respond to SIGNAL command
1335 before we execute the signal, in case the signal shuts us down.
1336 - Clean up AllowInvalidNodes man page entry.
1337 - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
1338 - Add more asserts to track down an assert error on a windows Tor
1339 server with connection_add being called with socket == -1.
1340 - Handle reporting OR_CONN_EVENT_NEW events to the controller.
1341 - Fix misleading log messages: an entry guard that is "unlisted",
1342 as well as not known to be "down" (because we've never heard
1343 of it), is not therefore "up".
1344 - Remove code to special-case "-cvs" ending, since it has not
1345 actually mattered since 0.0.9.
1346 - Make our socks5 handling more robust to broken socks clients:
1347 throw out everything waiting on the buffer in between socks
1348 handshake phases, since they can't possibly (so the theory
1349 goes) have predicted what we plan to respond to them.
1352 Changes in version 0.1.1.23 - 2006-07-30
1354 - Fast Tor servers, especially exit nodes, were triggering asserts
1355 due to a bug in handling the list of pending DNS resolves. Some
1356 bugs still remain here; we're hunting them.
1357 - Entry guards could crash clients by sending unexpected input.
1358 - More fixes on reachability testing: if you find yourself reachable,
1359 then don't ever make any client requests (so you stop predicting
1360 circuits), then hup or have your clock jump, then later your IP
1361 changes, you won't think circuits are working, so you won't try to
1362 test reachability, so you won't publish.
1365 - Avoid a crash if the controller does a resetconf firewallports
1366 and then a setconf fascistfirewall=1.
1367 - Avoid an integer underflow when the dir authority decides whether
1368 a router is stable: we might wrongly label it stable, and compute
1369 a slightly wrong median stability, when a descriptor is published
1371 - Fix a place where we might trigger an assert if we can't build our
1372 own server descriptor yet.
1375 Changes in version 0.1.1.22 - 2006-07-05
1377 - Fix a big bug that was causing servers to not find themselves
1378 reachable if they changed IP addresses. Since only 0.1.1.22+
1379 servers can do reachability testing correctly, now we automatically
1380 make sure to test via one of these.
1381 - Fix to allow clients and mirrors to learn directory info from
1382 descriptor downloads that get cut off partway through.
1383 - Directory authorities had a bug in deciding if a newly published
1384 descriptor was novel enough to make everybody want a copy -- a few
1385 servers seem to be publishing new descriptors many times a minute.
1387 - Fix a rare bug that was causing some servers to complain about
1388 "closing wedged cpuworkers" and skip some circuit create requests.
1389 - Make the Exit flag in directory status documents actually work.
1392 Changes in version 0.1.1.21 - 2006-06-10
1393 o Crash and assert fixes from 0.1.1.20:
1394 - Fix a rare crash on Tor servers that have enabled hibernation.
1395 - Fix a seg fault on startup for Tor networks that use only one
1396 directory authority.
1397 - Fix an assert from a race condition that occurs on Tor servers
1398 while exiting, where various threads are trying to log that they're
1399 exiting, and delete the logs, at the same time.
1400 - Make our unit tests pass again on certain obscure platforms.
1403 - Add support for building SUSE RPM packages.
1404 - Speed up initial bootstrapping for clients: if we are making our
1405 first ever connection to any entry guard, then don't mark it down
1407 - When only one Tor server in the network is labelled as a guard,
1408 and we've already picked him, we would cycle endlessly picking him
1409 again, being unhappy about it, etc. Now we specifically exclude
1410 current guards when picking a new guard.
1411 - Servers send create cells more reliably after the TLS connection
1412 is established: we were sometimes forgetting to send half of them
1413 when we had more than one pending.
1414 - If we get a create cell that asks us to extend somewhere, but the
1415 Tor server there doesn't match the expected digest, we now send
1416 a destroy cell back, rather than silently doing nothing.
1417 - Make options->RedirectExit work again.
1418 - Make cookie authentication for the controller work again.
1419 - Stop being picky about unusual characters in the arguments to
1420 mapaddress. It's none of our business.
1421 - Add a new config option "TestVia" that lets you specify preferred
1422 middle hops to use for test circuits. Perhaps this will let me
1423 debug the reachability problems better.
1425 o Log / documentation fixes:
1426 - If we're a server and some peer has a broken TLS certificate, don't
1427 log about it unless ProtocolWarnings is set, i.e., we want to hear
1428 about protocol violations by others.
1429 - Fix spelling of VirtualAddrNetwork in man page.
1430 - Add a better explanation at the top of the autogenerated torrc file
1431 about what happened to our old torrc.
1434 Changes in version 0.1.1.20 - 2006-05-23
1436 - Downgrade a log severity where servers complain that they're
1438 - Avoid a compile warning on FreeBSD.
1439 - Remove string size limit on NEWDESC messages; solve bug 291.
1440 - Correct the RunAsDaemon entry in the man page; ignore RunAsDaemon
1441 more thoroughly when we're running on windows.
1444 Changes in version 0.1.1.19-rc - 2006-05-03
1446 - Regenerate our local descriptor if it's dirty and we try to use
1447 it locally (e.g. if it changes during reachability detection).
1448 - If we setconf our ORPort to 0, we continued to listen on the
1449 old ORPort and receive connections.
1450 - Avoid a second warning about machine/limits.h on Debian
1452 - Be willing to add our own routerinfo into the routerlist.
1453 Now authorities will include themselves in their directories
1454 and network-statuses.
1455 - Stop trying to upload rendezvous descriptors to every
1456 directory authority: only try the v1 authorities.
1457 - Servers no longer complain when they think they're not
1458 registered with the directory authorities. There were too many
1460 - Backport dist-rpm changes so rpms can be built without errors.
1463 - Implement an option, VirtualAddrMask, to set which addresses
1464 get handed out in response to mapaddress requests. This works
1465 around a bug in tsocks where 127.0.0.0/8 is never socksified.
1468 Changes in version 0.1.1.18-rc - 2006-04-10
1470 - Work harder to download live network-statuses from all the
1471 directory authorities we know about. Improve the threshold
1472 decision logic so we're more robust to edge cases.
1473 - When fetching rendezvous descriptors, we were willing to ask
1474 v2 authorities too, which would always return 404.
1477 - Stop listing down or invalid nodes in the v1 directory. This will
1478 reduce its bulk by about 1/3, and reduce load on directory
1480 - When deciding whether a router is Fast or Guard-worthy, consider
1481 his advertised BandwidthRate and not just the BandwidthCapacity.
1482 - No longer ship INSTALL and README files -- they are useless now.
1483 - Force rpmbuild to behave and honor target_cpu.
1484 - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
1485 - Start to include translated versions of the tor-doc-*.html
1486 files, along with the screenshots. Still needs more work.
1487 - Start sending back 512 and 451 errors if mapaddress fails,
1488 rather than not sending anything back at all.
1489 - When we fail to bind or listen on an incoming or outgoing
1490 socket, we should close it before failing. otherwise we just
1491 leak it. (thanks to weasel for finding.)
1492 - Allow "getinfo dir/status/foo" to work, as long as your DirPort
1493 is enabled. (This is a hack, and will be fixed in 0.1.2.x.)
1494 - Make NoPublish (even though deprecated) work again.
1495 - Fix a minor security flaw where a versioning auth dirserver
1496 could list a recommended version many times in a row to make
1497 clients more convinced that it's recommended.
1498 - Fix crash bug if there are two unregistered servers running
1499 with the same nickname, one of them is down, and you ask for
1500 them by nickname in your EntryNodes or ExitNodes. Also, try
1501 to pick the one that's running rather than an arbitrary one.
1502 - Fix an infinite loop we could hit if we go offline for too long.
1503 - Complain when we hit WSAENOBUFS on recv() or write() too.
1504 Perhaps this will help us hunt the bug.
1505 - If you're not a versioning dirserver, don't put the string
1506 "client-versions \nserver-versions \n" in your network-status.
1507 - Lower the minimum required number of file descriptors to 1000,
1508 so we can have some overhead for Valgrind on Linux, where the
1509 default ulimit -n is 1024.
1512 - Add tor.dizum.com as the fifth authoritative directory server.
1513 - Add a new config option FetchUselessDescriptors, off by default,
1514 for when you plan to run "exitlist" on your client and you want
1515 to know about even the non-running descriptors.
1518 Changes in version 0.1.1.17-rc - 2006-03-28
1520 - Clients and servers since 0.1.1.10-alpha have been expiring
1521 connections whenever they are idle for 5 minutes and they *do*
1522 have circuits on them. Oops. With this new version, clients will
1523 discard their previous entry guard choices and avoid choosing
1524 entry guards running these flawed versions.
1525 - Fix memory leak when uncompressing concatenated zlib streams. This
1526 was causing substantial leaks over time on Tor servers.
1527 - The v1 directory was including servers as much as 48 hours old,
1528 because that's how the new routerlist->routers works. Now only
1529 include them if they're 20 hours old or less.
1532 - Resume building on irix64, netbsd 2.0, etc.
1533 - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
1535 - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
1536 and it is confusing some users.
1537 - Mirrors stop caching the v1 directory so often.
1538 - Make the max number of old descriptors that a cache will hold
1539 rise with the number of directory authorities, so we can scale.
1540 - Change our win32 uname() hack to be more forgiving about what
1541 win32 versions it thinks it's found.
1544 - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
1546 - When the controller's *setconf commands fail, collect an error
1547 message in a string and hand it back to the controller.
1548 - Make the v2 dir's "Fast" flag based on relative capacity, just
1549 like "Stable" is based on median uptime. Name everything in the
1550 top 7/8 Fast, and only the top 1/2 gets to be a Guard.
1551 - Log server fingerprint on startup, so new server operators don't
1552 have to go hunting around their filesystem for it.
1553 - Return a robots.txt on our dirport to discourage google indexing.
1554 - Let the controller ask for GETINFO dir/status/foo so it can ask
1555 directly rather than connecting to the dir port. Only works when
1556 dirport is set for now.
1558 o New config options rather than constants in the code:
1559 - SocksTimeout: How long do we let a socks connection wait
1560 unattached before we fail it?
1561 - CircuitBuildTimeout: Cull non-open circuits that were born
1562 at least this many seconds ago.
1563 - CircuitIdleTimeout: Cull open clean circuits that were born
1564 at least this many seconds ago.
1567 Changes in version 0.1.1.16-rc - 2006-03-18
1568 o Bugfixes on 0.1.1.15-rc:
1569 - Fix assert when the controller asks to attachstream a connect-wait
1570 or resolve-wait stream.
1571 - Now do address rewriting when the controller asks us to attach
1572 to a particular circuit too. This will let Blossom specify
1573 "moria2.exit" without having to learn what moria2's IP address is.
1574 - Make the "tor --verify-config" command-line work again, so people
1575 can automatically check if their torrc will parse.
1576 - Authoritative dirservers no longer require an open connection from
1577 a server to consider him "reachable". We need this change because
1578 when we add new auth dirservers, old servers won't know not to
1580 - Let Tor build on Sun CC again.
1581 - Fix an off-by-one buffer size in dirserv.c that magically never
1582 hit our three authorities but broke sjmurdoch's own tor network.
1583 - If we as a directory mirror don't know of any v1 directory
1584 authorities, then don't try to cache any v1 directories.
1585 - Stop warning about unknown servers in our family when they are
1586 given as hex digests.
1587 - Stop complaining as quickly to the server operator that he
1588 hasn't registered his nickname/key binding.
1589 - Various cleanups so we can add new V2 Auth Dirservers.
1590 - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
1591 reflect the updated flags in our v2 dir protocol.
1592 - Resume allowing non-printable characters for exit streams (both
1593 for connecting and for resolving). Now we tolerate applications
1594 that don't follow the RFCs. But continue to block malformed names
1597 o Bugfixes on 0.1.0.x:
1598 - Fix assert bug in close_logs(): when we close and delete logs,
1599 remove them all from the global "logfiles" list.
1600 - Fix minor integer overflow in calculating when we expect to use up
1601 our bandwidth allocation before hibernating.
1602 - Fix a couple of bugs in OpenSSL detection. Also, deal better when
1603 there are multiple SSLs installed with different versions.
1604 - When we try to be a server and Address is not explicitly set and
1605 our hostname resolves to a private IP address, try to use an
1606 interface address if it has a public address. Now Windows machines
1607 that think of themselves as localhost can work by default.
1610 - Let the controller ask for GETINFO dir/server/foo so it can ask
1611 directly rather than connecting to the dir port.
1612 - Let the controller tell us about certain router descriptors
1613 that it doesn't want Tor to use in circuits. Implement
1614 SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
1615 - New config option SafeSocks to reject all application connections
1616 using unsafe socks protocols. Defaults to off.
1619 Changes in version 0.1.1.15-rc - 2006-03-11
1620 o Bugfixes and cleanups:
1621 - When we're printing strings from the network, don't try to print
1622 non-printable characters. This protects us against shell escape
1623 sequence exploits, and also against attacks to fool humans into
1624 misreading their logs.
1625 - Fix a bug where Tor would fail to establish any connections if you
1626 left it off for 24 hours and then started it: we were happy with
1627 the obsolete network statuses, but they all referred to router
1628 descriptors that were too old to fetch, so we ended up with no
1629 valid router descriptors.
1630 - Fix a seg fault in the controller's "getinfo orconn-status"
1631 command while listing status on incoming handshaking connections.
1632 Introduce a status name "NEW" for these connections.
1633 - If we get a linelist or linelist_s config option from the torrc
1634 (e.g. ExitPolicy) and it has no value, warn and skip rather than
1635 silently resetting it to its default.
1636 - Don't abandon entry guards until they've been down or gone for
1638 - Cleaner and quieter log messages.
1641 - New controller signal NEWNYM that makes new application requests
1643 - Add a new circuit purpose 'controller' to let the controller ask
1644 for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
1645 controller command to let you specify the purpose if you're
1646 starting a new circuit. Add a new SETCIRCUITPURPOSE controller
1647 command to let you change a circuit's purpose after it's been
1649 - Accept "private:*" in routerdesc exit policies; not generated yet
1650 because older Tors do not understand it.
1651 - Add BSD-style contributed startup script "rc.subr" from Peter
1655 Changes in version 0.1.1.14-alpha - 2006-02-20
1656 o Bugfixes on 0.1.1.x:
1657 - Don't die if we ask for a stdout or stderr log (even implicitly)
1658 and we're set to RunAsDaemon -- just warn.
1659 - We still had a few bugs in the OR connection rotation code that
1660 caused directory servers to slowly aggregate connections to other
1661 fast Tor servers. This time for sure!
1662 - Make log entries on Win32 include the name of the function again.
1663 - We were treating a pair of exit policies if they were equal even
1664 if one said accept and the other said reject -- causing us to
1665 not always publish a new descriptor since we thought nothing
1667 - Retry pending server downloads as well as pending networkstatus
1668 downloads when we unexpectedly get a socks request.
1669 - We were ignoring the IS_FAST flag in the directory status,
1670 meaning we were willing to pick trivial-bandwidth nodes for "fast"
1672 - If the controller's SAVECONF command fails (e.g. due to file
1673 permissions), let the controller know that it failed.
1676 - If we're trying to be a Tor server and running Windows 95/98/ME
1677 as a server, explain that we'll likely crash.
1678 - When we're a server, a client asks for an old-style directory,
1679 and our write bucket is empty, don't give it to him. This way
1680 small servers can continue to serve the directory *sometimes*,
1681 without getting overloaded.
1682 - Compress exit policies even more -- look for duplicate lines
1684 - Clients now honor the "guard" flag in the router status when
1685 picking entry guards, rather than looking at is_fast or is_stable.
1686 - Retain unrecognized lines in $DATADIR/state file, so that we can
1687 be forward-compatible.
1688 - Generate 18.0.0.0/8 address policy format in descs when we can;
1689 warn when the mask is not reducible to a bit-prefix.
1690 - Let the user set ControlListenAddress in the torrc. This can be
1691 dangerous, but there are some cases (like a secured LAN) where it
1693 - Split ReachableAddresses into ReachableDirAddresses and
1694 ReachableORAddresses, so we can restrict Dir conns to port 80
1695 and OR conns to port 443.
1696 - Now we can target arch and OS in rpm builds (contributed by
1697 Phobos). Also make the resulting dist-rpm filename match the
1699 - New config options to help controllers: FetchServerDescriptors
1700 and FetchHidServDescriptors for whether to fetch server
1701 info and hidserv info or let the controller do it, and
1702 PublishServerDescriptor and PublishHidServDescriptors.
1703 - Also let the controller set the __AllDirActionsPrivate config
1704 option if you want all directory fetches/publishes to happen via
1705 Tor (it assumes your controller bootstraps your circuits).
1708 Changes in version 0.1.0.17 - 2006-02-17
1709 o Crash bugfixes on 0.1.0.x:
1710 - When servers with a non-zero DirPort came out of hibernation,
1711 sometimes they would trigger an assert.
1713 o Other important bugfixes:
1714 - On platforms that don't have getrlimit (like Windows), we were
1715 artificially constraining ourselves to a max of 1024
1716 connections. Now just assume that we can handle as many as 15000
1717 connections. Hopefully this won't cause other problems.
1719 o Backported features:
1720 - When we're a server, a client asks for an old-style directory,
1721 and our write bucket is empty, don't give it to him. This way
1722 small servers can continue to serve the directory *sometimes*,
1723 without getting overloaded.
1724 - Whenever you get a 503 in response to a directory fetch, try
1725 once more. This will become important once servers start sending
1726 503's whenever they feel busy.
1727 - Fetch a new directory every 120 minutes, not every 40 minutes.
1728 Now that we have hundreds of thousands of users running the old
1729 directory algorithm, it's starting to hurt a lot.
1730 - Bump up the period for forcing a hidden service descriptor upload
1731 from 20 minutes to 1 hour.
1734 Changes in version 0.1.1.13-alpha - 2006-02-09
1735 o Crashes in 0.1.1.x:
1736 - When you tried to setconf ORPort via the controller, Tor would
1737 crash. So people using TorCP to become a server were sad.
1738 - Solve (I hope) the stack-smashing bug that we were seeing on fast
1739 servers. The problem appears to be something do with OpenSSL's
1740 random number generation, or how we call it, or something. Let me
1741 know if the crashes continue.
1742 - Turn crypto hardware acceleration off by default, until we find
1743 somebody smart who can test it for us. (It appears to produce
1744 seg faults in at least some cases.)
1745 - Fix a rare assert error when we've tried all intro points for
1746 a hidden service and we try fetching the service descriptor again:
1747 "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
1750 - Fix a major load balance bug: we were round-robining in 16 KB
1751 chunks, and servers with bandwidthrate of 20 KB, while downloading
1752 a 600 KB directory, would starve their other connections. Now we
1753 try to be a bit more fair.
1754 - Dir authorities and mirrors were never expiring the newest
1755 descriptor for each server, causing memory and directory bloat.
1756 - Fix memory-bloating and connection-bloating bug on servers: We
1757 were never closing any connection that had ever had a circuit on
1758 it, because we were checking conn->n_circuits == 0, yet we had a
1759 bug that let it go negative.
1760 - Make Tor work using squid as your http proxy again -- squid
1761 returns an error if you ask for a URL that's too long, and it uses
1762 a really generic error message. Plus, many people are behind a
1763 transparent squid so they don't even realize it.
1764 - On platforms that don't have getrlimit (like Windows), we were
1765 artificially constraining ourselves to a max of 1024
1766 connections. Now just assume that we can handle as many as 15000
1767 connections. Hopefully this won't cause other problems.
1768 - Add a new config option ExitPolicyRejectPrivate which defaults to
1769 1. This means all exit policies will begin with rejecting private
1770 addresses, unless the server operator explicitly turns it off.
1773 - Clients not longer download descriptors for non-running
1775 - Before we add new directory authorities, we should make it
1776 clear that only v1 authorities should receive/publish hidden
1777 service descriptors.
1780 - As soon as we've fetched some more directory info, immediately
1781 try to download more server descriptors. This way we don't have
1782 a 10 second pause during initial bootstrapping.
1783 - Remove even more loud log messages that the server operator can't
1785 - When we're running an obsolete or un-recommended version, make
1786 the log message more clear about what the problem is and what
1787 versions *are* still recommended.
1788 - Provide a more useful warn message when our onion queue gets full:
1789 the CPU is too slow or the exit policy is too liberal.
1790 - Don't warn when we receive a 503 from a dirserver/cache -- this
1791 will pave the way for them being able to refuse if they're busy.
1792 - When we fail to bind a listener, try to provide a more useful
1793 log message: e.g., "Is Tor already running?"
1794 - Adjust tor-spec to parameterize cell and key lengths. Now Ian
1795 Goldberg can prove things about our handshake protocol more
1797 - MaxConn has been obsolete for a while now. Document the ConnLimit
1798 config option, which is a *minimum* number of file descriptors
1799 that must be available else Tor refuses to start.
1800 - Apply Matt Ghali's --with-syslog-facility patch to ./configure
1801 if you log to syslog and want something other than LOG_DAEMON.
1802 - Make dirservers generate a separate "guard" flag to mean,
1803 "would make a good entry guard". Make clients parse it and vote
1804 on it. Not used by clients yet.
1805 - Implement --with-libevent-dir option to ./configure. Also, improve
1806 search techniques to find libevent, and use those for openssl too.
1807 - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
1808 - Only start testing reachability once we've established a
1809 circuit. This will make startup on dirservers less noisy.
1810 - Don't try to upload hidden service descriptors until we have
1811 established a circuit.
1812 - Fix the controller's "attachstream 0" command to treat conn like
1813 it just connected, doing address remapping, handling .exit and
1814 .onion idioms, and so on. Now we're more uniform in making sure
1815 that the controller hears about new and closing connections.
1818 Changes in version 0.1.1.12-alpha - 2006-01-11
1819 o Bugfixes on 0.1.1.x:
1820 - The fix to close duplicate server connections was closing all
1821 Tor client connections if they didn't establish a circuit
1822 quickly enough. Oops.
1823 - Fix minor memory issue (double-free) that happened on exit.
1825 o Bugfixes on 0.1.0.x:
1826 - Tor didn't warn when it failed to open a log file.
1829 Changes in version 0.1.1.11-alpha - 2006-01-10
1830 o Crashes in 0.1.1.x:
1831 - Include all the assert/crash fixes from 0.1.0.16.
1832 - If you start Tor and then quit very quickly, there were some
1833 races that tried to free things that weren't allocated yet.
1834 - Fix a rare memory stomp if you're running hidden services.
1835 - Fix segfault when specifying DirServer in config without nickname.
1836 - Fix a seg fault when you finish connecting to a server but at
1837 that moment you dump his server descriptor.
1838 - Extendcircuit and Attachstream controller commands would
1839 assert/crash if you don't give them enough arguments.
1840 - Fix an assert error when we're out of space in the connection_list
1841 and we try to post a hidden service descriptor (reported by weasel).
1842 - If you specify a relative torrc path and you set RunAsDaemon in
1843 your torrc, then it chdir()'s to the new directory. If you HUP,
1844 it tries to load the new torrc location, fails, and exits.
1845 The fix: no longer allow a relative path to torrc using -f.
1848 - Implement "entry guards": automatically choose a handful of entry
1849 nodes and stick with them for all circuits. Only pick new guards
1850 when the ones you have are unsuitable, and if the old guards
1851 become suitable again, switch back. This will increase security
1852 dramatically against certain end-point attacks. The EntryNodes
1853 config option now provides some hints about which entry guards you
1854 want to use most; and StrictEntryNodes means to only use those.
1855 - New directory logic: download by descriptor digest, not by
1856 fingerprint. Caches try to download all listed digests from
1857 authorities; clients try to download "best" digests from caches.
1858 This avoids partitioning and isolating attacks better.
1859 - Make the "stable" router flag in network-status be the median of
1860 the uptimes of running valid servers, and make clients pay
1861 attention to the network-status flags. Thus the cutoff adapts
1862 to the stability of the network as a whole, making IRC, IM, etc
1863 connections more reliable.
1866 - Tor servers with dynamic IP addresses were needing to wait 18
1867 hours before they could start doing reachability testing using
1868 the new IP address and ports. This is because they were using
1869 the internal descriptor to learn what to test, yet they were only
1870 rebuilding the descriptor once they decided they were reachable.
1871 - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
1872 to download certain server descriptors, throw them away, and then
1873 fetch them again after 30 minutes. Now mirrors throw away these
1874 server descriptors so clients can't get them.
1875 - We were leaving duplicate connections to other ORs open for a week,
1876 rather than closing them once we detect a duplicate. This only
1877 really affected authdirservers, but it affected them a lot.
1878 - Spread the authdirservers' reachability testing over the entire
1879 testing interval, so we don't try to do 500 TLS's at once every
1883 - If the network is down, and we try to connect to a conn because
1884 we have a circuit in mind, and we timeout (30 seconds) because the
1885 network never answers, we were expiring the circuit, but we weren't
1886 obsoleting the connection or telling the entry_guards functions.
1887 - Some Tor servers process billions of cells per day. These statistics
1888 need to be uint64_t's.
1889 - Check for integer overflows in more places, when adding elements
1890 to smartlists. This could possibly prevent a buffer overflow
1891 on malicious huge inputs. I don't see any, but I haven't looked
1893 - ReachableAddresses kept growing new "reject *:*" lines on every
1895 - When you "setconf log" via the controller, it should remove all
1896 logs. We were automatically adding back in a "log notice stdout".
1897 - Newly bootstrapped Tor networks couldn't establish hidden service
1898 circuits until they had nodes with high uptime. Be more tolerant.
1899 - We were marking servers down when they could not answer every piece
1900 of the directory request we sent them. This was far too harsh.
1901 - Fix the torify (tsocks) config file to not use Tor for localhost
1903 - Directory authorities now go to the proper authority when asking for
1904 a networkstatus, even when they want a compressed one.
1905 - Fix a harmless bug that was causing Tor servers to log
1906 "Got an end because of misc error, but we're not an AP. Closing."
1907 - Authorities were treating their own descriptor changes as cosmetic,
1908 meaning the descriptor available in the network-status and the
1909 descriptor that clients downloaded were different.
1910 - The OS X installer was adding a symlink for tor_resolve but
1911 the binary was called tor-resolve (reported by Thomas Hardly).
1912 - Workaround a problem with some http proxies where they refuse GET
1913 requests that specify "Content-Length: 0" (reported by Adrian).
1914 - Fix wrong log message when you add a "HiddenServiceNodes" config
1915 line without any HiddenServiceDir line (reported by Chris Thomas).
1918 - Write the TorVersion into the state file so we have a prayer of
1919 keeping forward and backward compatibility.
1920 - Revive the FascistFirewall config option rather than eliminating it:
1921 now it's a synonym for ReachableAddresses *:80,*:443.
1922 - Clients choose directory servers from the network status lists,
1923 not from their internal list of router descriptors. Now they can
1924 go to caches directly rather than needing to go to authorities
1926 - Directory authorities ignore router descriptors that have only
1927 cosmetic differences: do this for 0.1.0.x servers now too.
1928 - Add a new flag to network-status indicating whether the server
1929 can answer v2 directory requests too.
1930 - Authdirs now stop whining so loudly about bad descriptors that
1931 they fetch from other dirservers. So when there's a log complaint,
1932 it's for sure from a freshly uploaded descriptor.
1933 - Reduce memory requirements in our structs by changing the order
1935 - There used to be two ways to specify your listening ports in a
1936 server descriptor: on the "router" line and with a separate "ports"
1937 line. Remove support for the "ports" line.
1938 - New config option "AuthDirRejectUnlisted" for auth dirservers as
1939 a panic button: if we get flooded with unusable servers we can
1940 revert to only listing servers in the approved-routers file.
1941 - Auth dir servers can now mark a fingerprint as "!reject" or
1942 "!invalid" in the approved-routers file (as its nickname), to
1943 refuse descriptors outright or include them but marked as invalid.
1944 - Servers store bandwidth history across restarts/crashes.
1945 - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
1946 get a better idea of why their circuits failed. Not used yet.
1947 - Directory mirrors now cache up to 16 unrecognized network-status
1948 docs. Now we can add new authdirservers and they'll be cached too.
1949 - When picking a random directory, prefer non-authorities if any
1951 - New controller option "getinfo desc/all-recent" to fetch the
1952 latest server descriptor for every router that Tor knows about.
1955 Changes in version 0.1.0.16 - 2006-01-02
1956 o Crash bugfixes on 0.1.0.x:
1957 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
1958 corrupting the heap, losing FDs, or crashing when we need to resize
1959 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
1960 - It turns out sparc64 platforms crash on unaligned memory access
1961 too -- so detect and avoid this.
1962 - Handle truncated compressed data correctly (by detecting it and
1964 - Fix possible-but-unlikely free(NULL) in control.c.
1965 - When we were closing connections, there was a rare case that
1966 stomped on memory, triggering seg faults and asserts.
1967 - Avoid potential infinite recursion when building a descriptor. (We
1968 don't know that it ever happened, but better to fix it anyway.)
1969 - We were neglecting to unlink marked circuits from soon-to-close OR
1970 connections, which caused some rare scribbling on freed memory.
1971 - Fix a memory stomping race bug when closing the joining point of two
1972 rendezvous circuits.
1973 - Fix an assert in time parsing found by Steven Murdoch.
1975 o Other bugfixes on 0.1.0.x:
1976 - When we're doing reachability testing, provide more useful log
1977 messages so the operator knows what to expect.
1978 - Do not check whether DirPort is reachable when we are suppressing
1979 advertising it because of hibernation.
1980 - When building with -static or on Solaris, we sometimes needed -ldl.
1981 - When we're deciding whether a stream has enough circuits around
1982 that can handle it, count the freshly dirty ones and not the ones
1983 that are so dirty they won't be able to handle it.
1984 - When we're expiring old circuits, we had a logic error that caused
1985 us to close new rendezvous circuits rather than old ones.
1986 - Give a more helpful log message when you try to change ORPort via
1987 the controller: you should upgrade Tor if you want that to work.
1988 - We were failing to parse Tor versions that start with "Tor ".
1989 - Tolerate faulty streams better: when a stream fails for reason
1990 exitpolicy, stop assuming that the router is lying about his exit
1991 policy. When a stream fails for reason misc, allow it to retry just
1992 as if it was resolvefailed. When a stream has failed three times,
1993 reset its failure count so we can try again and get all three tries.
1996 Changes in version 0.1.1.10-alpha - 2005-12-11
1997 o Correctness bugfixes on 0.1.0.x:
1998 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
1999 corrupting the heap, losing FDs, or crashing when we need to resize
2000 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
2001 - Stop doing the complex voodoo overkill checking for insecure
2002 Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
2003 - When we were closing connections, there was a rare case that
2004 stomped on memory, triggering seg faults and asserts.
2005 - We were neglecting to unlink marked circuits from soon-to-close OR
2006 connections, which caused some rare scribbling on freed memory.
2007 - When we're deciding whether a stream has enough circuits around
2008 that can handle it, count the freshly dirty ones and not the ones
2009 that are so dirty they won't be able to handle it.
2010 - Recover better from TCP connections to Tor servers that are
2011 broken but don't tell you (it happens!); and rotate TLS
2012 connections once a week.
2013 - When we're expiring old circuits, we had a logic error that caused
2014 us to close new rendezvous circuits rather than old ones.
2015 - Fix a scary-looking but apparently harmless bug where circuits
2016 would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
2017 servers, and never switch to state CIRCUIT_STATE_OPEN.
2018 - When building with -static or on Solaris, we sometimes needed to
2020 - Give a useful message when people run Tor as the wrong user,
2021 rather than telling them to start chowning random directories.
2022 - We were failing to inform the controller about new .onion streams.
2024 o Security bugfixes on 0.1.0.x:
2025 - Refuse server descriptors if the fingerprint line doesn't match
2026 the included identity key. Tor doesn't care, but other apps (and
2027 humans) might actually be trusting the fingerprint line.
2028 - We used to kill the circuit when we receive a relay command we
2029 don't recognize. Now we just drop it.
2030 - Start obeying our firewall options more rigorously:
2031 . If we can't get to a dirserver directly, try going via Tor.
2032 . Don't ever try to connect (as a client) to a place our
2033 firewall options forbid.
2034 . If we specify a proxy and also firewall options, obey the
2035 firewall options even when we're using the proxy: some proxies
2036 can only proxy to certain destinations.
2037 - Fix a bug found by Lasse Overlier: when we were making internal
2038 circuits (intended to be cannibalized later for rendezvous and
2039 introduction circuits), we were picking them so that they had
2040 useful exit nodes. There was no need for this, and it actually
2041 aids some statistical attacks.
2042 - Start treating internal circuits and exit circuits separately.
2043 It's important to keep them separate because internal circuits
2044 have their last hops picked like middle hops, rather than like
2045 exit hops. So exiting on them will break the user's expectations.
2047 o Bugfixes on 0.1.1.x:
2048 - Take out the mis-feature where we tried to detect IP address
2049 flapping for people with DynDNS, and chose not to upload a new
2050 server descriptor sometimes.
2051 - Try to be compatible with OpenSSL 0.9.6 again.
2052 - Log fix: when the controller is logging about .onion addresses,
2053 sometimes it didn't include the ".onion" part of the address.
2054 - Don't try to modify options->DirServers internally -- if the
2055 user didn't specify any, just add the default ones directly to
2056 the trusted dirserver list. This fixes a bug where people running
2057 controllers would use SETCONF on some totally unrelated config
2058 option, and Tor would start yelling at them about changing their
2060 - Let the controller's redirectstream command specify a port, in
2061 case the controller wants to change that too.
2062 - When we requested a pile of server descriptors, we sometimes
2063 accidentally launched a duplicate request for the first one.
2064 - Bugfix for trackhostexits: write down the fingerprint of the
2065 chosen exit, not its nickname, because the chosen exit might not
2067 - When parsing foo.exit, if foo is unknown, and we are leaving
2068 circuits unattached, set the chosen_exit field and leave the
2069 address empty. This matters because controllers got confused
2071 - Directory authorities no longer try to download server
2072 descriptors that they know they will reject.
2074 o Features and updates:
2075 - Replace balanced trees with hash tables: this should make stuff
2076 significantly faster.
2077 - Resume using the AES counter-mode implementation that we ship,
2078 rather than OpenSSL's. Ours is significantly faster.
2079 - Many other CPU and memory improvements.
2080 - Add a new config option FastFirstHopPK (on by default) so clients
2081 do a trivial crypto handshake for their first hop, since TLS has
2082 already taken care of confidentiality and authentication.
2083 - Add a new config option TestSocks so people can see if their
2084 applications are using socks4, socks4a, socks5-with-ip, or
2085 socks5-with-hostname. This way they don't have to keep mucking
2086 with tcpdump and wondering if something got cached somewhere.
2087 - Warn when listening on a public address for socks. I suspect a
2088 lot of people are setting themselves up as open socks proxies,
2089 and they have no idea that jerks on the Internet are using them,
2090 since they simply proxy the traffic into the Tor network.
2091 - Add "private:*" as an alias in configuration for policies. Now
2092 you can simplify your exit policy rather than needing to list
2093 every single internal or nonroutable network space.
2094 - Add a new controller event type that allows controllers to get
2095 all server descriptors that were uploaded to a router in its role
2096 as authoritative dirserver.
2097 - Start shipping socks-extensions.txt, tor-doc-unix.html,
2098 tor-doc-server.html, and stylesheet.css in the tarball.
2099 - Stop shipping tor-doc.html in the tarball.
2102 Changes in version 0.1.1.9-alpha - 2005-11-15
2103 o Usability improvements:
2104 - Start calling it FooListenAddress rather than FooBindAddress,
2105 since few of our users know what it means to bind an address
2107 - Reduce clutter in server logs. We're going to try to make
2108 them actually usable now. New config option ProtocolWarnings that
2109 lets you hear about how _other Tors_ are breaking the protocol. Off
2111 - Divide log messages into logging domains. Once we put some sort
2112 of interface on this, it will let people looking at more verbose
2113 log levels specify the topics they want to hear more about.
2114 - Make directory servers return better http 404 error messages
2115 instead of a generic "Servers unavailable".
2116 - Check for even more Windows version flags when writing the platform
2117 string in server descriptors, and note any we don't recognize.
2118 - Clean up more of the OpenSSL memory when exiting, so we can detect
2119 memory leaks better.
2120 - Make directory authorities be non-versioning, non-naming by
2121 default. Now we can add new directory servers without requiring
2122 their operators to pay close attention.
2123 - When logging via syslog, include the pid whenever we provide
2124 a log entry. Suggested by Todd Fries.
2126 o Performance improvements:
2127 - Directory servers now silently throw away new descriptors that
2128 haven't changed much if the timestamps are similar. We do this to
2129 tolerate older Tor servers that upload a new descriptor every 15
2130 minutes. (It seemed like a good idea at the time.)
2131 - Inline bottleneck smartlist functions; use fast versions by default.
2132 - Add a "Map from digest to void*" abstraction digestmap_t so we
2133 can do less hex encoding/decoding. Use it in router_get_by_digest()
2134 to resolve a performance bottleneck.
2135 - Allow tor_gzip_uncompress to extract as much as possible from
2136 truncated compressed data. Try to extract as many
2137 descriptors as possible from truncated http responses (when
2138 DIR_PURPOSE_FETCH_ROUTERDESC).
2139 - Make circ->onionskin a pointer, not a static array. moria2 was using
2140 125000 circuit_t's after it had been up for a few weeks, which
2141 translates to 20+ megs of wasted space.
2142 - The private half of our EDH handshake keys are now chosen out
2143 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
2145 o Security improvements:
2146 - Start making directory caches retain old routerinfos, so soon
2147 clients can start asking by digest of descriptor rather than by
2148 fingerprint of server.
2149 - Add half our entropy from RAND_poll in OpenSSL. This knows how
2150 to use egd (if present), openbsd weirdness (if present), vms/os2
2151 weirdness (if we ever port there), and more in the future.
2153 o Bugfixes on 0.1.0.x:
2154 - Do round-robin writes of at most 16 kB per write. This might be
2155 more fair on loaded Tor servers, and it might resolve our Windows
2156 crash bug. It might also slow things down.
2157 - Our TLS handshakes were generating a single public/private
2158 keypair for the TLS context, rather than making a new one for
2159 each new connections. Oops. (But we were still rotating them
2160 periodically, so it's not so bad.)
2161 - When we were cannibalizing a circuit with a particular exit
2162 node in mind, we weren't checking to see if that exit node was
2163 already present earlier in the circuit. Oops.
2164 - When a Tor server's IP changes (e.g. from a dyndns address),
2165 upload a new descriptor so clients will learn too.
2166 - Really busy servers were keeping enough circuits open on stable
2167 connections that they were wrapping around the circuit_id
2168 space. (It's only two bytes.) This exposed a bug where we would
2169 feel free to reuse a circuit_id even if it still exists but has
2170 been marked for close. Try to fix this bug. Some bug remains.
2171 - If we would close a stream early (e.g. it asks for a .exit that
2172 we know would refuse it) but the LeaveStreamsUnattached config
2173 option is set by the controller, then don't close it.
2175 o Bugfixes on 0.1.1.8-alpha:
2176 - Fix a big pile of memory leaks, some of them serious.
2177 - Do not try to download a routerdesc if we would immediately reject
2179 - Resume inserting a newline between all router descriptors when
2180 generating (old style) signed directories, since our spec says
2182 - When providing content-type application/octet-stream for
2183 server descriptors using .z, we were leaving out the
2184 content-encoding header. Oops. (Everything tolerated this just
2185 fine, but that doesn't mean we need to be part of the problem.)
2186 - Fix a potential seg fault in getconf and getinfo using version 1
2187 of the controller protocol.
2188 - Avoid crash: do not check whether DirPort is reachable when we
2189 are suppressing it because of hibernation.
2190 - Make --hash-password not crash on exit.
2193 Changes in version 0.1.1.8-alpha - 2005-10-07
2194 o New features (major):
2195 - Clients don't download or use the directory anymore. Now they
2196 download and use network-statuses from the trusted dirservers,
2197 and fetch individual server descriptors as needed from mirrors.
2198 See dir-spec.txt for all the gory details.
2199 - Be more conservative about whether to advertise our DirPort.
2200 The main change is to not advertise if we're running at capacity
2201 and either a) we could hibernate or b) our capacity is low and
2202 we're using a default DirPort.
2203 - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
2205 o New features (minor):
2206 - Try to be smart about when to retry network-status and
2207 server-descriptor fetches. Still needs some tuning.
2208 - Stop parsing, storing, or using running-routers output (but
2209 mirrors still cache and serve it).
2210 - Consider a threshold of versioning dirservers (dirservers who have
2211 an opinion about which Tor versions are still recommended) before
2212 deciding whether to warn the user that he's obsolete.
2213 - Dirservers can now reject/invalidate by key and IP, with the
2214 config options "AuthDirInvalid" and "AuthDirReject". This is
2215 useful since currently we automatically list servers as running
2216 and usable even if we know they're jerks.
2217 - Provide dire warnings to any users who set DirServer; move it out
2218 of torrc.sample and into torrc.complete.
2219 - Add MyFamily to torrc.sample in the server section.
2220 - Add nicknames to the DirServer line, so we can refer to them
2221 without requiring all our users to memorize their IP addresses.
2222 - When we get an EOF or a timeout on a directory connection, note
2223 how many bytes of serverdesc we are dropping. This will help
2224 us determine whether it is smart to parse incomplete serverdesc
2226 - Add a new function to "change pseudonyms" -- that is, to stop
2227 using any currently-dirty circuits for new streams, so we don't
2228 link new actions to old actions. Currently it's only called on
2229 HUP (or SIGNAL RELOAD).
2230 - On sighup, if UseHelperNodes changed to 1, use new circuits.
2231 - Start using RAND_bytes rather than RAND_pseudo_bytes from
2232 OpenSSL. Also, reseed our entropy every hour, not just at
2233 startup. And entropy in 512-bit chunks, not 160-bit chunks.
2235 o Fixes on 0.1.1.7-alpha:
2236 - Nobody ever implemented EVENT_ADDRMAP for control protocol
2237 version 0, so don't let version 0 controllers ask for it.
2238 - If you requested something with too many newlines via the
2239 v1 controller protocol, you could crash tor.
2240 - Fix a number of memory leaks, including some pretty serious ones.
2241 - Re-enable DirPort testing again, so Tor servers will be willing
2242 to advertise their DirPort if it's reachable.
2243 - On TLS handshake, only check the other router's nickname against
2244 its expected nickname if is_named is set.
2246 o Fixes forward-ported from 0.1.0.15:
2247 - Don't crash when we don't have any spare file descriptors and we
2248 try to spawn a dns or cpu worker.
2249 - Make the numbers in read-history and write-history into uint64s,
2250 so they don't overflow and publish negatives in the descriptor.
2253 - For the OS X package's modified privoxy config file, comment
2254 out the "logfile" line so we don't log everything passed
2256 - We were whining about using socks4 or socks5-with-local-lookup
2257 even when it's an IP in the "virtual" range we designed exactly
2259 - We were leaking some memory every time the client changes IPs.
2260 - Never call free() on tor_malloc()d memory. This will help us
2261 use dmalloc to detect memory leaks.
2262 - Check for named servers when looking them up by nickname;
2263 warn when we'recalling a non-named server by its nickname;
2264 don't warn twice about the same name.
2265 - Try to list MyFamily elements by key, not by nickname, and warn
2266 if we've not heard of the server.
2267 - Make windows platform detection (uname equivalent) smarter.
2268 - It turns out sparc64 doesn't like unaligned access either.
2271 Changes in version 0.1.0.15 - 2005-09-23
2272 o Bugfixes on 0.1.0.x:
2273 - Reject ports 465 and 587 (spam targets) in default exit policy.
2274 - Don't crash when we don't have any spare file descriptors and we
2275 try to spawn a dns or cpu worker.
2276 - Get rid of IgnoreVersion undocumented config option, and make us
2277 only warn, never exit, when we're running an obsolete version.
2278 - Don't try to print a null string when your server finds itself to
2279 be unreachable and the Address config option is empty.
2280 - Make the numbers in read-history and write-history into uint64s,
2281 so they don't overflow and publish negatives in the descriptor.
2282 - Fix a minor memory leak in smartlist_string_remove().
2283 - We were only allowing ourselves to upload a server descriptor at
2284 most every 20 minutes, even if it changed earlier than that.
2285 - Clean up log entries that pointed to old URLs.
2288 Changes in version 0.1.1.7-alpha - 2005-09-14
2289 o Fixes on 0.1.1.6-alpha:
2290 - Exit servers were crashing when people asked them to make a
2291 connection to an address not in their exit policy.
2292 - Looking up a non-existent stream for a v1 control connection would
2294 - Fix a seg fault if we ask a dirserver for a descriptor by
2295 fingerprint but he doesn't know about him.
2296 - SETCONF was appending items to linelists, not clearing them.
2297 - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
2298 out and refuse the setconf if it would fail.
2299 - Downgrade the dirserver log messages when whining about
2303 - Add Peter Palfrader's check-tor script to tor/contrib/
2304 It lets you easily check whether a given server (referenced by
2305 nickname) is reachable by you.
2306 - Numerous changes to move towards client-side v2 directories. Not
2310 - If the user gave tor an odd number of command-line arguments,
2311 we were silently ignoring the last one. Now we complain and fail.
2312 [This wins the oldest-bug prize -- this bug has been present since
2313 November 2002, as released in Tor 0.0.0.]
2314 - Do not use unaligned memory access on alpha, mips, or mipsel.
2315 It *works*, but is very slow, so we treat them as if it doesn't.
2316 - Retry directory requests if we fail to get an answer we like
2317 from a given dirserver (we were retrying before, but only if
2318 we fail to connect).
2319 - When writing the RecommendedVersions line, sort them first.
2320 - When the client asked for a rendezvous port that the hidden
2321 service didn't want to provide, we were sending an IP address
2322 back along with the end cell. Fortunately, it was zero. But stop
2324 - Correct "your server is reachable" log entries to indicate that
2325 it was self-testing that told us so.
2328 Changes in version 0.1.1.6-alpha - 2005-09-09
2329 o Fixes on 0.1.1.5-alpha:
2330 - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
2331 - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
2332 - Fix bug with tor_memmem finding a match at the end of the string.
2333 - Make unit tests run without segfaulting.
2334 - Resolve some solaris x86 compile warnings.
2335 - Handle duplicate lines in approved-routers files without warning.
2336 - Fix bug where as soon as a server refused any requests due to his
2337 exit policy (e.g. when we ask for localhost and he tells us that's
2338 127.0.0.1 and he won't do it), we decided he wasn't obeying his
2339 exit policy using him for any exits.
2340 - Only do openssl hardware accelerator stuff if openssl version is
2343 o New controller features/fixes:
2344 - Add a "RESETCONF" command so you can set config options like
2345 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
2346 a config option in the torrc with no value, then it clears it
2347 entirely (rather than setting it to its default).
2348 - Add a "GETINFO config-file" to tell us where torrc is.
2349 - Avoid sending blank lines when GETINFO replies should be empty.
2350 - Add a QUIT command for the controller (for using it manually).
2351 - Fix a bug in SAVECONF that was adding default dirservers and
2352 other redundant entries to the torrc file.
2354 o Start on the new directory design:
2355 - Generate, publish, cache, serve new network-status format.
2356 - Publish individual descriptors (by fingerprint, by "all", and by
2358 - Publish client and server recommended versions separately.
2359 - Allow tor_gzip_uncompress() to handle multiple concatenated
2360 compressed strings. Serve compressed groups of router
2361 descriptors. The compression logic here could be more
2363 - Distinguish v1 authorities (all currently trusted directories)
2364 from v2 authorities (all trusted directories).
2365 - Change DirServers config line to note which dirs are v1 authorities.
2366 - Add configuration option "V1AuthoritativeDirectory 1" which
2367 moria1, moria2, and tor26 should set.
2368 - Remove option when getting directory cache to see whether they
2369 support running-routers; they all do now. Replace it with one
2370 to see whether caches support v2 stuff.
2373 - Dirservers now do their own external reachability testing of each
2374 Tor server, and only list them as running if they've been found to
2375 be reachable. We also send back warnings to the server's logs if
2376 it uploads a descriptor that we already believe is unreachable.
2377 - Implement exit enclaves: if we know an IP address for the
2378 destination, and there's a running Tor server at that address
2379 which allows exit to the destination, then extend the circuit to
2380 that exit first. This provides end-to-end encryption and end-to-end
2381 authentication. Also, if the user wants a .exit address or enclave,
2382 use 4 hops rather than 3, and cannibalize a general circ for it
2384 - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
2385 controller. Also, rotate dns and cpu workers if the controller
2386 changes options that will affect them; and initialize the dns
2387 worker cache tree whether or not we start out as a server.
2388 - Only upload a new server descriptor when options change, 18
2389 hours have passed, uptime is reset, or bandwidth changes a lot.
2390 - Check [X-]Forwarded-For headers in HTTP requests when generating
2391 log messages. This lets people run dirservers (and caches) behind
2392 Apache but still know which IP addresses are causing warnings.
2394 o Config option changes:
2395 - Replace (Fascist)Firewall* config options with a new
2396 ReachableAddresses option that understands address policies.
2397 For example, "ReachableAddresses *:80,*:443"
2398 - Get rid of IgnoreVersion undocumented config option, and make us
2399 only warn, never exit, when we're running an obsolete version.
2400 - Make MonthlyAccountingStart config option truly obsolete now.
2403 - Reject ports 465 and 587 in the default exit policy, since
2404 people have started using them for spam too.
2405 - It turns out we couldn't bootstrap a network since we added
2406 reachability detection in 0.1.0.1-rc. Good thing the Tor network
2407 has never gone down. Add an AssumeReachable config option to let
2408 servers and dirservers bootstrap. When we're trying to build a
2409 high-uptime or high-bandwidth circuit but there aren't enough
2410 suitable servers, try being less picky rather than simply failing.
2411 - Our logic to decide if the OR we connected to was the right guy
2412 was brittle and maybe open to a mitm for unverified routers.
2413 - We weren't cannibalizing circuits correctly for
2414 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
2415 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
2416 build those from scratch. This should make hidden services faster.
2417 - Predict required circuits better, with an eye toward making hidden
2418 services faster on the service end.
2419 - Retry streams if the exit node sends back a 'misc' failure. This
2420 should result in fewer random failures. Also, after failing
2421 from resolve failed or misc, reset the num failures, so we give
2422 it a fair shake next time we try.
2423 - Clean up the rendezvous warn log msgs, and downgrade some to info.
2424 - Reduce severity on logs about dns worker spawning and culling.
2425 - When we're shutting down and we do something like try to post a
2426 server descriptor or rendezvous descriptor, don't complain that
2427 we seem to be unreachable. Of course we are, we're shutting down.
2428 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
2429 We don't use them yet, but maybe one day our DNS resolver will be
2430 able to discover them.
2431 - Make ContactInfo mandatory for authoritative directory servers.
2432 - Require server descriptors to list IPv4 addresses -- hostnames
2433 are no longer allowed. This also fixes some potential security
2434 problems with people providing hostnames as their address and then
2435 preferentially resolving them to partition users.
2436 - Change log line for unreachability to explicitly suggest /etc/hosts
2437 as the culprit. Also make it clearer what IP address and ports we're
2438 testing for reachability.
2439 - Put quotes around user-supplied strings when logging so users are
2440 more likely to realize if they add bad characters (like quotes)
2442 - Let auth dir servers start without specifying an Address config
2444 - Make unit tests (and other invocations that aren't the real Tor)
2445 run without launching listeners, creating subdirectories, and so on.
2448 Changes in version 0.1.1.5-alpha - 2005-08-08
2449 o Bugfixes included in 0.1.0.14.
2451 o Bugfixes on 0.1.0.x:
2452 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
2453 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
2454 it would silently using ignore the 6668.
2457 Changes in version 0.1.0.14 - 2005-08-08
2458 o Bugfixes on 0.1.0.x:
2459 - Fix the other half of the bug with crypto handshakes
2461 - Fix an assert trigger if you send a 'signal term' via the
2462 controller when it's listening for 'event info' messages.
2465 Changes in version 0.1.1.4-alpha - 2005-08-04
2466 o Bugfixes included in 0.1.0.13.
2469 - Improve tor_gettimeofday() granularity on windows.
2470 - Make clients regenerate their keys when their IP address changes.
2471 - Implement some more GETINFO goodness: expose helper nodes, config
2472 options, getinfo keys.
2475 Changes in version 0.1.0.13 - 2005-08-04
2476 o Bugfixes on 0.1.0.x:
2477 - Fix a critical bug in the security of our crypto handshakes.
2478 - Fix a size_t underflow in smartlist_join_strings2() that made
2479 it do bad things when you hand it an empty smartlist.
2480 - Fix Windows installer to ship Tor license (thanks to Aphex for
2481 pointing out this oversight) and put a link to the doc directory
2483 - Explicitly set no-unaligned-access for sparc: it turns out the
2484 new gcc's let you compile broken code, but that doesn't make it
2488 Changes in version 0.1.1.3-alpha - 2005-07-23
2489 o Bugfixes on 0.1.1.2-alpha:
2490 - Fix a bug in handling the controller's "post descriptor"
2492 - Fix several bugs in handling the controller's "extend circuit"
2494 - Fix a bug in handling the controller's "stream status" event.
2495 - Fix an assert failure if we have a controller listening for
2496 circuit events and we go offline.
2497 - Re-allow hidden service descriptors to publish 0 intro points.
2498 - Fix a crash when generating your hidden service descriptor if
2499 you don't have enough intro points already.
2501 o New features on 0.1.1.2-alpha:
2502 - New controller function "getinfo accounting", to ask how
2503 many bytes we've used in this time period.
2504 - Experimental support for helper nodes: a lot of the risk from
2505 a small static adversary comes because users pick new random
2506 nodes every time they rebuild a circuit. Now users will try to
2507 stick to the same small set of entry nodes if they can. Not
2508 enabled by default yet.
2510 o Bugfixes on 0.1.0.12:
2511 - If you're an auth dir server, always publish your dirport,
2512 even if you haven't yet found yourself to be reachable.
2513 - Fix a size_t underflow in smartlist_join_strings2() that made
2514 it do bad things when you hand it an empty smartlist.
2517 Changes in version 0.1.0.12 - 2005-07-18
2518 o New directory servers:
2519 - tor26 has changed IP address.
2521 o Bugfixes on 0.1.0.x:
2522 - Fix a possible double-free in tor_gzip_uncompress().
2523 - When --disable-threads is set, do not search for or link against
2525 - Don't trigger an assert if an authoritative directory server
2526 claims its dirport is 0.
2527 - Fix bug with removing Tor as an NT service: some people were
2528 getting "The service did not return an error." Thanks to Matt
2532 Changes in version 0.1.1.2-alpha - 2005-07-15
2533 o New directory servers:
2534 - tor26 has changed IP address.
2536 o Bugfixes on 0.1.0.x, crashes/leaks:
2537 - Port the servers-not-obeying-their-exit-policies fix from
2539 - Fix an fd leak in start_daemon().
2540 - On Windows, you can't always reopen a port right after you've
2541 closed it. So change retry_listeners() to only close and re-open
2542 ports that have changed.
2543 - Fix a possible double-free in tor_gzip_uncompress().
2545 o Bugfixes on 0.1.0.x, usability:
2546 - When tor_socketpair() fails in Windows, give a reasonable
2547 Windows-style errno back.
2548 - Let people type "tor --install" as well as "tor -install" when
2550 want to make it an NT service.
2551 - NT service patch from Matt Edman to improve error messages.
2552 - When the controller asks for a config option with an abbreviated
2553 name, give the full name in our response.
2554 - Correct the man page entry on TrackHostExitsExpire.
2555 - Looks like we were never delivering deflated (i.e. compressed)
2556 running-routers lists, even when asked. Oops.
2557 - When --disable-threads is set, do not search for or link against
2560 o Bugfixes on 0.1.1.x:
2561 - Fix a seg fault with autodetecting which controller version is
2565 - New hidden service descriptor format: put a version in it, and
2566 let people specify introduction/rendezvous points that aren't
2567 in "the directory" (which is subjective anyway).
2568 - Allow the DEBUG controller event to work again. Mark certain log
2569 entries as "don't tell this to controllers", so we avoid cycles.
2572 Changes in version 0.1.0.11 - 2005-06-30
2573 o Bugfixes on 0.1.0.x:
2574 - Fix major security bug: servers were disregarding their
2575 exit policies if clients behaved unexpectedly.
2576 - Make OS X init script check for missing argument, so we don't
2577 confuse users who invoke it incorrectly.
2578 - Fix a seg fault in "tor --hash-password foo".
2579 - The MAPADDRESS control command was broken.
2582 Changes in version 0.1.1.1-alpha - 2005-06-29
2584 - Make OS X init script check for missing argument, so we don't
2585 confuse users who invoke it incorrectly.
2586 - Fix a seg fault in "tor --hash-password foo".
2587 - Fix a possible way to DoS dirservers.
2588 - When we complain that your exit policy implicitly allows local or
2589 private address spaces, name them explicitly so operators can
2591 - Make the log message less scary when all the dirservers are
2592 temporarily unreachable.
2593 - We were printing the number of idle dns workers incorrectly when
2597 - Revised controller protocol (version 1) that uses ascii rather
2598 than binary. Add supporting libraries in python and java so you
2599 can use the controller from your applications without caring how
2601 - Spiffy new support for crypto hardware accelerators. Can somebody
2605 Changes in version 0.0.9.10 - 2005-06-16
2606 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
2607 - Refuse relay cells that claim to have a length larger than the
2608 maximum allowed. This prevents a potential attack that could read
2609 arbitrary memory (e.g. keys) from an exit server's process
2613 Changes in version 0.1.0.10 - 2005-06-14
2614 o Allow a few EINVALs from libevent before dying. Warn on kqueue with
2615 libevent before 1.1a.
2618 Changes in version 0.1.0.9-rc - 2005-06-09
2620 - Reset buf->highwater every time buf_shrink() is called, not just on
2621 a successful shrink. This was causing significant memory bloat.
2622 - Fix buffer overflow when checking hashed passwords.
2623 - Security fix: if seeding the RNG on Win32 fails, quit.
2624 - Allow seeding the RNG on Win32 even when you're not running as
2626 - Disable threading on Solaris too. Something is wonky with it,
2627 cpuworkers, and reentrant libs.
2628 - Reenable the part of the code that tries to flush as soon as an
2629 OR outbuf has a full TLS record available. Perhaps this will make
2630 OR outbufs not grow as huge except in rare cases, thus saving lots
2631 of CPU time plus memory.
2632 - Reject malformed .onion addresses rather then passing them on as
2633 normal web requests.
2634 - Adapt patch from Adam Langley: fix possible memory leak in
2635 tor_lookup_hostname().
2636 - Initialize libevent later in the startup process, so the logs are
2637 already established by the time we start logging libevent warns.
2638 - Use correct errno on win32 if libevent fails.
2639 - Check and warn about known-bad/slow libevent versions.
2640 - Pay more attention to the ClientOnly config option.
2641 - Have torctl.in/tor.sh.in check for location of su binary (needed
2643 - Correct/add man page entries for LongLivedPorts, ExitPolicy,
2644 KeepalivePeriod, ClientOnly, NoPublish, HttpProxy, HttpsProxy,
2645 HttpProxyAuthenticator
2646 - Stop warning about sigpipes in the logs. We're going to
2647 pretend that getting these occassionally is normal and fine.
2648 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in
2650 installer screens; and don't put stuff into StartupItems unless
2651 the user asks you to.
2652 - Require servers that use the default dirservers to have public IP
2653 addresses. We have too many servers that are configured with private
2654 IPs and their admins never notice the log entries complaining that
2655 their descriptors are being rejected.
2656 - Add OSX uninstall instructions. An actual uninstall script will
2660 Changes in version 0.1.0.8-rc - 2005-05-23
2662 - It turns out that kqueue on OS X 10.3.9 was causing kernel
2663 panics. Disable kqueue on all OS X Tors.
2664 - Fix RPM: remove duplicate line accidentally added to the rpm
2666 - Disable threads on openbsd too, since its gethostaddr is not
2668 - Tolerate libevent 0.8 since it still works, even though it's
2670 - Enable building on Red Hat 9.0 again.
2671 - Allow the middle hop of the testing circuit to be running any
2672 version, now that most of them have the bugfix to let them connect
2673 to unknown servers. This will allow reachability testing to work
2674 even when 0.0.9.7-0.0.9.9 become obsolete.
2675 - Handle relay cells with rh.length too large. This prevents
2676 a potential attack that could read arbitrary memory (maybe even
2677 keys) from the exit server's process.
2678 - We screwed up the dirport reachability testing when we don't yet
2679 have a cached version of the directory. Hopefully now fixed.
2680 - Clean up router_load_single_router() (used by the controller),
2681 so it doesn't seg fault on error.
2682 - Fix a minor memory leak when somebody establishes an introduction
2683 point at your Tor server.
2684 - If a socks connection ends because read fails, don't warn that
2685 you're not sending a socks reply back.
2688 - Add HttpProxyAuthenticator config option too, that works like
2689 the HttpsProxyAuthenticator config option.
2690 - Encode hashed controller passwords in hex instead of base64,
2691 to make it easier to write controllers.
2694 Changes in version 0.1.0.7-rc - 2005-05-17
2696 - Fix a bug in the OS X package installer that prevented it from
2697 installing on Tiger.
2698 - Fix a script bug in the OS X package installer that made it
2699 complain during installation.
2700 - Find libevent even if it's hiding in /usr/local/ and your
2701 CFLAGS and LDFLAGS don't tell you to look there.
2702 - Be able to link with libevent as a shared library (the default
2703 after 1.0d), even if it's hiding in /usr/local/lib and even
2704 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
2705 assuming you're running gcc. Otherwise fail and give a useful
2707 - Fix a bug in the RPM packager: set home directory for _tor to
2708 something more reasonable when first installing.
2709 - Free a minor amount of memory that is still reachable on exit.
2712 Changes in version 0.1.0.6-rc - 2005-05-14
2714 - Implement --disable-threads configure option. Disable threads on
2715 netbsd by default, because it appears to have no reentrant resolver
2717 - Apple's OS X 10.4.0 ships with a broken kqueue. The new libevent
2718 release (1.1) detects and disables kqueue if it's broken.
2719 - Append default exit policy before checking for implicit internal
2720 addresses. Now we don't log a bunch of complaints on startup
2721 when using the default exit policy.
2722 - Some people were putting "Address " in their torrc, and they had
2723 a buggy resolver that resolved " " to 0.0.0.0. Oops.
2724 - If DataDir is ~/.tor, and that expands to /.tor, then default to
2725 LOCALSTATEDIR/tor instead.
2726 - Fix fragmented-message bug in TorControl.py.
2727 - Resolve a minor bug which would prevent unreachable dirports
2728 from getting suppressed in the published descriptor.
2729 - When the controller gave us a new descriptor, we weren't resolving
2730 it immediately, so Tor would think its address was 0.0.0.0 until
2731 we fetched a new directory.
2732 - Fix an uppercase/lowercase case error in suppressing a bogus
2733 libevent warning on some Linuxes.
2736 - Begin scrubbing sensitive strings from logs by default. Turn off
2737 the config option SafeLogging if you need to do debugging.
2738 - Switch to a new buffer management algorithm, which tries to avoid
2739 reallocing and copying quite as much. In first tests it looks like
2740 it uses *more* memory on average, but less cpu.
2741 - First cut at support for "create-fast" cells. Clients can use
2742 these when extending to their first hop, since the TLS already
2743 provides forward secrecy and authentication. Not enabled on
2745 - When dirservers refuse a router descriptor, we now log its
2746 contactinfo, platform, and the poster's IP address.
2747 - Call tor_free_all instead of connections_free_all after forking, to
2748 save memory on systems that need to fork.
2749 - Whine at you if you're a server and you don't set your contactinfo.
2750 - Implement --verify-config command-line option to check if your torrc
2751 is valid without actually launching Tor.
2752 - Rewrite address "serifos.exit" to "localhost.serifos.exit"
2753 rather than just rejecting it.
2756 Changes in version 0.1.0.5-rc - 2005-04-27
2758 - Stop trying to print a null pointer if an OR conn fails because
2759 we didn't like its cert.
2761 - Switch our internal buffers implementation to use a ring buffer,
2762 to hopefully improve performance for fast servers a lot.
2763 - Add HttpsProxyAuthenticator support (basic auth only), based
2764 on patch from Adam Langley.
2765 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
2766 the fast servers that have been joining lately.
2767 - Give hidden service accesses extra time on the first attempt,
2768 since 60 seconds is often only barely enough. This might improve
2770 - Improve performance for dirservers: stop re-parsing the whole
2771 directory every time you regenerate it.
2772 - Add more debugging info to help us find the weird dns freebsd
2773 pthreads bug; cleaner debug messages to help track future issues.
2776 Changes in version 0.0.9.9 - 2005-04-23
2777 o Bugfixes on 0.0.9.x:
2778 - If unofficial Tor clients connect and send weird TLS certs, our
2779 Tor server triggers an assert. This release contains a minimal
2780 backport from the broader fix that we put into 0.1.0.4-rc.
2783 Changes in version 0.1.0.4-rc - 2005-04-23
2785 - If unofficial Tor clients connect and send weird TLS certs, our
2786 Tor server triggers an assert. Stop asserting, and start handling
2787 TLS errors better in other situations too.
2788 - When the controller asks us to tell it about all the debug-level
2789 logs, it turns out we were generating debug-level logs while
2790 telling it about them, which turns into a bad loop. Now keep
2791 track of whether you're sending a debug log to the controller,
2792 and don't log when you are.
2793 - Fix the "postdescriptor" feature of the controller interface: on
2794 non-complete success, only say "done" once.
2796 - Clients are now willing to load balance over up to 2mB, not 1mB,
2797 of advertised bandwidth capacity.
2798 - Add a NoPublish config option, so you can be a server (e.g. for
2799 testing running Tor servers in other Tor networks) without
2800 publishing your descriptor to the primary dirservers.
2803 Changes in version 0.1.0.3-rc - 2005-04-08
2804 o Improvements on 0.1.0.2-rc:
2805 - Client now retries when streams end early for 'hibernating' or
2806 'resource limit' reasons, rather than failing them.
2807 - More automated handling for dirserver operators:
2808 - Automatically approve nodes running 0.1.0.2-rc or later,
2809 now that the the reachability detection stuff is working.
2810 - Now we allow two unverified servers with the same nickname
2811 but different keys. But if a nickname is verified, only that
2812 nickname+key are allowed.
2813 - If you're an authdirserver connecting to an address:port,
2814 and it's not the OR you were expecting, forget about that
2815 descriptor. If he *was* the one you were expecting, then forget
2816 about all other descriptors for that address:port.
2817 - Allow servers to publish descriptors from 12 hours in the future.
2818 Corollary: only whine about clock skew from the dirserver if
2819 he's a trusted dirserver (since now even verified servers could
2820 have quite wrong clocks).
2821 - Adjust maximum skew and age for rendezvous descriptors: let skew
2822 be 48 hours rather than 90 minutes.
2823 - Efficiency improvements:
2824 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
2825 it much faster to look up a circuit for each relay cell.
2826 - Remove most calls to assert_all_pending_dns_resolves_ok(),
2827 since they're eating our cpu on exit nodes.
2828 - Stop wasting time doing a case insensitive comparison for every
2829 dns name every time we do any lookup. Canonicalize the names to
2830 lowercase and be done with it.
2831 - Start sending 'truncated' cells back rather than destroy cells,
2832 if the circuit closes in front of you. This means we won't have
2833 to abandon partially built circuits.
2834 - Only warn once per nickname from add_nickname_list_to_smartlist
2835 per failure, so an entrynode or exitnode choice that's down won't
2837 - Put a note in the torrc about abuse potential with the default
2839 - Revise control spec and implementation to allow all log messages to
2840 be sent to controller with their severities intact (suggested by
2841 Matt Edman). Update TorControl to handle new log event types.
2842 - Provide better explanation messages when controller's POSTDESCRIPTOR
2844 - Stop putting nodename in the Platform string in server descriptors.
2845 It doesn't actually help, and it is confusing/upsetting some people.
2847 o Bugfixes on 0.1.0.2-rc:
2848 - We were printing the host mask wrong in exit policies in server
2849 descriptors. This isn't a critical bug though, since we were still
2850 obeying the exit policy internally.
2851 - Fix Tor when compiled with libevent but without pthreads: move
2852 connection_unregister() from _connection_free() to
2854 - Fix an assert trigger (already fixed in 0.0.9.x): when we have
2855 the rare mysterious case of accepting a conn on 0.0.0.0:0, then
2856 when we look through the connection array, we'll find any of the
2857 cpu/dnsworkers. This is no good.
2859 o Bugfixes on 0.0.9.8:
2860 - Fix possible bug on threading platforms (e.g. win32) which was
2861 leaking a file descriptor whenever a cpuworker or dnsworker died.
2862 - When using preferred entry or exit nodes, ignore whether the
2863 circuit wants uptime or capacity. They asked for the nodes, they
2865 - chdir() to your datadirectory at the *end* of the daemonize process,
2866 not the beginning. This was a problem because the first time you
2867 run tor, if your datadir isn't there, and you have runasdaemon set
2868 to 1, it will try to chdir to it before it tries to create it. Oops.
2869 - Handle changed router status correctly when dirserver reloads
2870 fingerprint file. We used to be dropping all unverified descriptors
2871 right then. The bug was hidden because we would immediately
2872 fetch a directory from another dirserver, which would include the
2873 descriptors we just dropped.
2874 - When we're connecting to an OR and he's got a different nickname/key
2875 than we were expecting, only complain loudly if we're an OP or a
2876 dirserver. Complaining loudly to the OR admins just confuses them.
2877 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
2878 artificially capped at 500kB.
2881 Changes in version 0.0.9.8 - 2005-04-07
2882 o Bugfixes on 0.0.9.x:
2883 - We have a bug that I haven't found yet. Sometimes, very rarely,
2884 cpuworkers get stuck in the 'busy' state, even though the cpuworker
2885 thinks of itself as idle. This meant that no new circuits ever got
2886 established. Here's a workaround to kill any cpuworker that's been
2887 busy for more than 100 seconds.
2890 Changes in version 0.1.0.2-rc - 2005-04-01
2891 o Bugfixes on 0.1.0.1-rc:
2892 - Fixes on reachability detection:
2893 - Don't check for reachability while hibernating.
2894 - If ORPort is reachable but DirPort isn't, still publish the
2895 descriptor, but zero out DirPort until it's found reachable.
2896 - When building testing circs for ORPort testing, use only
2897 high-bandwidth nodes, so fewer circuits fail.
2898 - Complain about unreachable ORPort separately from unreachable
2899 DirPort, so the user knows what's going on.
2900 - Make sure we only conclude ORPort reachability if we didn't
2901 initiate the conn. Otherwise we could falsely conclude that
2902 we're reachable just because we connected to the guy earlier
2903 and he used that same pipe to extend to us.
2904 - Authdirservers shouldn't do ORPort reachability detection,
2905 since they're in clique mode, so it will be rare to find a
2906 server not already connected to them.
2907 - When building testing circuits, always pick middle hops running
2908 Tor 0.0.9.7, so we avoid the "can't extend to unknown routers"
2909 bug. (This is a kludge; it will go away when 0.0.9.x becomes
2911 - When we decide we're reachable, actually publish our descriptor
2913 - Fix bug in redirectstream in the controller.
2914 - Fix the state descriptor strings so logs don't claim edge streams
2915 are in a different state than they actually are.
2916 - Use recent libevent features when possible (this only really affects
2917 win32 and osx right now, because the new libevent with these
2918 features hasn't been released yet). Add code to suppress spurious
2920 - Prevent possible segfault in connection_close_unattached_ap().
2921 - Fix newlines on torrc in win32.
2922 - Improve error msgs when tor-resolve fails.
2924 o Improvements on 0.0.9.x:
2925 - New experimental script tor/contrib/ExerciseServer.py (needs more
2926 work) that uses the controller interface to build circuits and
2927 fetch pages over them. This will help us bootstrap servers that
2928 have lots of capacity but haven't noticed it yet.
2929 - New experimental script tor/contrib/PathDemo.py (needs more work)
2930 that uses the controller interface to let you choose whole paths
2932 "<hostname>.<path,separated by dots>.<length of path>.path"
2933 - When we've connected to an OR and handshaked but didn't like
2934 the result, we were closing the conn without sending destroy
2935 cells back for pending circuits. Now send those destroys.
2938 Changes in version 0.0.9.7 - 2005-04-01
2939 o Bugfixes on 0.0.9.x:
2940 - Fix another race crash bug (thanks to Glenn Fink for reporting).
2941 - Compare identity to identity, not to nickname, when extending to
2942 a router not already in the directory. This was preventing us from
2943 extending to unknown routers. Oops.
2944 - Make sure to create OS X Tor user in <500 range, so we aren't
2945 creating actual system users.
2946 - Note where connection-that-hasn't-sent-end was marked, and fix
2947 a few really loud instances of this harmless bug (it's fixed more
2951 Changes in version 0.1.0.1-rc - 2005-03-28
2953 - Add reachability testing. Your Tor server will automatically try
2954 to see if its ORPort and DirPort are reachable from the outside,
2955 and it won't upload its descriptor until it decides they are.
2956 - Handle unavailable hidden services better. Handle slow or busy
2957 hidden services better.
2958 - Add support for CONNECTing through https proxies, with "HttpsProxy"
2960 - New exit policy: accept most low-numbered ports, rather than
2961 rejecting most low-numbered ports.
2962 - More Tor controller support (still experimental). See
2963 http://tor.eff.org/doc/control-spec.txt for all the new features,
2964 including signals to emulate unix signals from any platform;
2965 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
2966 closestream; closecircuit; etc.
2967 - Make nt services work and start on startup on win32 (based on
2968 patch by Matt Edman).
2969 - Add a new AddressMap config directive to rewrite incoming socks
2970 addresses. This lets you, for example, declare an implicit
2971 required exit node for certain sites.
2972 - Add a new TrackHostExits config directive to trigger addressmaps
2973 for certain incoming socks addresses -- for sites that break when
2974 your exit keeps changing (based on patch by Mike Perry).
2975 - Redo the client-side dns cache so it's just an addressmap too.
2976 - Notice when our IP changes, and reset stats/uptime/reachability.
2977 - When an application is using socks5, give him the whole variety of
2978 potential socks5 responses (connect refused, host unreachable, etc),
2979 rather than just "success" or "failure".
2980 - A more sane version numbering system. See
2981 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
2982 - New contributed script "exitlist": a simple python script to
2983 parse directories and find Tor nodes that exit to listed
2985 - New contributed script "privoxy-tor-toggle" to toggle whether
2986 Privoxy uses Tor. Seems to be configured for Debian by default.
2987 - Report HTTP reasons to client when getting a response from directory
2988 servers -- so you can actually know what went wrong.
2989 - New config option MaxAdvertisedBandwidth which lets you advertise
2990 a low bandwidthrate (to not attract as many circuits) while still
2991 allowing a higher bandwidthrate in reality.
2993 o Robustness/stability fixes:
2994 - Make Tor use Niels Provos's libevent instead of its current
2995 poll-but-sometimes-select mess. This will let us use faster async
2996 cores (like epoll, kpoll, and /dev/poll), and hopefully work better
2998 - pthread support now too. This was forced because when we forked,
2999 we ended up wasting a lot of duplicate ram over time. Also switch
3000 to foo_r versions of some library calls to allow reentry and
3002 - Better handling for heterogeneous / unreliable nodes:
3003 - Annotate circuits w/ whether they aim to contain high uptime nodes
3004 and/or high capacity nodes. When building circuits, choose
3006 - This means that every single node in an intro rend circuit,
3007 not just the last one, will have a minimum uptime.
3008 - New config option LongLivedPorts to indicate application streams
3009 that will want high uptime circuits.
3010 - Servers reset uptime when a dir fetch entirely fails. This
3011 hopefully reflects stability of the server's network connectivity.
3012 - If somebody starts his tor server in Jan 2004 and then fixes his
3013 clock, don't make his published uptime be a year.
3014 - Reset published uptime when you wake up from hibernation.
3015 - Introduce a notion of 'internal' circs, which are chosen without
3016 regard to the exit policy of the last hop. Intro and rendezvous
3017 circs must be internal circs, to avoid leaking information. Resolve
3018 and connect streams can use internal circs if they want.
3019 - New circuit pooling algorithm: make sure to have enough circs around
3020 to satisfy any predicted ports, and also make sure to have 2 internal
3021 circs around if we've required internal circs lately (and with high
3022 uptime if we've seen that lately too).
3023 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
3024 which describes how often we retry making new circuits if current
3025 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
3026 how long we're willing to make use of an already-dirty circuit.
3027 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
3028 circ as necessary, if there are any completed ones lying around
3029 when we try to launch one.
3030 - Make hidden services try to establish a rendezvous for 30 seconds,
3031 rather than for n (where n=3) attempts to build a circuit.
3032 - Change SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to a config option
3033 "ShutdownWaitLength".
3034 - Try to be more zealous about calling connection_edge_end when
3035 things go bad with edge conns in connection.c.
3036 - Revise tor-spec to add more/better stream end reasons.
3037 - Revise all calls to connection_edge_end to avoid sending "misc",
3038 and to take errno into account where possible.
3041 - Fix a race condition that can trigger an assert, when we have a
3042 pending create cell and an OR connection fails right then.
3043 - Fix several double-mark-for-close bugs, e.g. where we were finding
3044 a conn for a cell even if that conn is already marked for close.
3045 - Make sequence of log messages when starting on win32 with no config
3046 file more reasonable.
3047 - When choosing an exit node for a new non-internal circ, don't take
3048 into account whether it'll be useful for any pending x.onion
3049 addresses -- it won't.
3050 - Turn addr_policy_compare from a tristate to a quadstate; this should
3051 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
3052 for google.com" problem.
3053 - Make "platform" string in descriptor more accurate for Win32 servers,
3054 so it's not just "unknown platform".
3055 - Fix an edge case in parsing config options (thanks weasel).
3056 If they say "--" on the commandline, it's not an option.
3057 - Reject odd-looking addresses at the client (e.g. addresses that
3058 contain a colon), rather than having the server drop them because
3060 - tor-resolve requests were ignoring .exit if there was a working circuit
3061 they could use instead.
3062 - REUSEADDR on normal platforms means you can rebind to the port
3063 right after somebody else has let it go. But REUSEADDR on win32
3064 means to let you bind to the port _even when somebody else
3065 already has it bound_! So, don't do that on Win32.
3066 - Change version parsing logic: a version is "obsolete" if it is not
3067 recommended and (1) there is a newer recommended version in the
3068 same series, or (2) there are no recommended versions in the same
3069 series, but there are some recommended versions in a newer series.
3070 A version is "new" if it is newer than any recommended version in
3072 - Stop most cases of hanging up on a socks connection without sending
3076 - Require BandwidthRate to be at least 20kB/s for servers.
3077 - When a dirserver causes you to give a warn, mention which dirserver
3079 - New config option DirAllowPrivateAddresses for authdirservers.
3080 Now by default they refuse router descriptors that have non-IP or
3081 private-IP addresses.
3082 - Stop publishing socksport in the directory, since it's not
3083 actually meant to be public. For compatibility, publish a 0 there
3085 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
3086 smart" value, that is low for servers and high for clients.
3087 - If our clock jumps forward by 100 seconds or more, assume something
3088 has gone wrong with our network and abandon all not-yet-used circs.
3089 - Warn when exit policy implicitly allows local addresses.
3090 - If we get an incredibly skewed timestamp from a dirserver mirror
3091 that isn't a verified OR, don't warn -- it's probably him that's
3093 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
3094 cookies to disk and doesn't log each web request to disk. (Thanks
3095 to Brett Carrington for pointing this out.)
3096 - When a client asks us for a dir mirror and we don't have one,
3097 launch an attempt to get a fresh one.
3098 - If we're hibernating and we get a SIGINT, exit immediately.
3099 - Add --with-dmalloc ./configure option, to track memory leaks.
3100 - And try to free all memory on closing, so we can detect what
3102 - Cache local dns resolves correctly even when they're .exit
3104 - Give a better warning when some other server advertises an
3105 ORPort that is actually an apache running ssl.
3106 - Add "opt hibernating 1" to server descriptor to make it clearer
3107 whether the server is hibernating.
3110 Changes in version 0.0.9.6 - 2005-03-24
3111 o Bugfixes on 0.0.9.x (crashes and asserts):
3112 - Add new end stream reasons to maintainance branch. Fix bug where
3113 reason (8) could trigger an assert. Prevent bug from recurring.
3114 - Apparently win32 stat wants paths to not end with a slash.
3115 - Fix assert triggers in assert_cpath_layer_ok(), where we were
3116 blowing away the circuit that conn->cpath_layer points to, then
3117 checking to see if the circ is well-formed. Backport check to make
3118 sure we dont use the cpath on a closed connection.
3119 - Prevent circuit_resume_edge_reading_helper() from trying to package
3120 inbufs for marked-for-close streams.
3121 - Don't crash on hup if your options->address has become unresolvable.
3122 - Some systems (like OS X) sometimes accept() a connection and tell
3123 you the remote host is 0.0.0.0:0. If this happens, due to some
3124 other mis-features, we get confused; so refuse the conn for now.
3126 o Bugfixes on 0.0.9.x (other):
3127 - Fix harmless but scary "Unrecognized content encoding" warn message.
3128 - Add new stream error reason: TORPROTOCOL reason means "you are not
3129 speaking a version of Tor I understand; say bye-bye to your stream."
3130 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
3131 into the future, now that we are more tolerant of skew. This
3132 resolves a bug where a Tor server would refuse to cache a directory
3133 because all the directories it gets are too far in the future;
3134 yet the Tor server never logs any complaints about clock skew.
3135 - Mac packaging magic: make man pages useable, and do not overwrite
3136 existing torrc files.
3137 - Make OS X log happily to /var/log/tor/tor.log
3140 Changes in version 0.0.9.5 - 2005-02-22
3141 o Bugfixes on 0.0.9.x:
3142 - Fix an assert race at exit nodes when resolve requests fail.
3143 - Stop picking unverified dir mirrors--it only leads to misery.
3144 - Patch from Matt Edman to make NT services work better. Service
3145 support is still not compiled into the executable by default.
3146 - Patch from Dmitri Bely so the Tor service runs better under
3147 the win32 SYSTEM account.
3148 - Make tor-resolve actually work (?) on Win32.
3149 - Fix a sign bug when getrlimit claims to have 4+ billion
3150 file descriptors available.
3151 - Stop refusing to start when bandwidthburst == bandwidthrate.
3152 - When create cells have been on the onion queue more than five
3153 seconds, just send back a destroy and take them off the list.
3156 Changes in version 0.0.9.4 - 2005-02-03
3157 o Bugfixes on 0.0.9:
3158 - Fix an assert bug that took down most of our servers: when
3159 a server claims to have 1 GB of bandwidthburst, don't
3161 - Don't crash as badly if we have spawned the max allowed number
3162 of dnsworkers, or we're out of file descriptors.
3163 - Block more file-sharing ports in the default exit policy.
3164 - MaxConn is now automatically set to the hard limit of max
3165 file descriptors we're allowed (ulimit -n), minus a few for
3167 - Give a clearer message when servers need to raise their
3168 ulimit -n when they start running out of file descriptors.
3169 - SGI Compatibility patches from Jan Schaumann.
3170 - Tolerate a corrupt cached directory better.
3171 - When a dirserver hasn't approved your server, list which one.
3172 - Go into soft hibernation after 95% of the bandwidth is used,
3173 not 99%. This is especially important for daily hibernators who
3174 have a small accounting max. Hopefully it will result in fewer
3175 cut connections when the hard hibernation starts.
3176 - Load-balance better when using servers that claim more than
3177 800kB/s of capacity.
3178 - Make NT services work (experimental, only used if compiled in).
3181 Changes in version 0.0.9.3 - 2005-01-21
3182 o Bugfixes on 0.0.9:
3183 - Backport the cpu use fixes from main branch, so busy servers won't
3184 need as much processor time.
3185 - Work better when we go offline and then come back, or when we
3186 run Tor at boot before the network is up. We do this by
3187 optimistically trying to fetch a new directory whenever an
3188 application request comes in and we think we're offline -- the
3189 human is hopefully a good measure of when the network is back.
3190 - Backport some minimal hidserv bugfixes: keep rend circuits open as
3191 long as you keep using them; actually publish hidserv descriptors
3192 shortly after they change, rather than waiting 20-40 minutes.
3193 - Enable Mac startup script by default.
3194 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
3195 - When you update AllowUnverifiedNodes or FirewallPorts via the
3196 controller's setconf feature, we were always appending, never
3198 - When you update HiddenServiceDir via setconf, it was screwing up
3199 the order of reading the lines, making it fail.
3200 - Do not rewrite a cached directory back to the cache; otherwise we
3201 will think it is recent and not fetch a newer one on startup.
3202 - Workaround for webservers that lie about Content-Encoding: Tor
3203 now tries to autodetect compressed directories and compression
3204 itself. This lets us Proxypass dir fetches through apache.
3207 Changes in version 0.0.9.2 - 2005-01-04
3208 o Bugfixes on 0.0.9 (crashes and asserts):
3209 - Fix an assert on startup when the disk is full and you're logging
3211 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
3212 style address, then we'd crash.
3213 - Fix an assert trigger when the running-routers string we get from
3214 a dirserver is broken.
3215 - Make worker threads start and run on win32. Now win32 servers
3217 - Bandaid (not actually fix, but now it doesn't crash) an assert
3218 where the dns worker dies mysteriously and the main Tor process
3219 doesn't remember anything about the address it was resolving.
3221 o Bugfixes on 0.0.9 (Win32):
3222 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
3223 name out of the warning/assert messages.
3224 - Fix a superficial "unhandled error on read" bug on win32.
3225 - The win32 installer no longer requires a click-through for our
3226 license, since our Free Software license grants rights but does not
3228 - Win32: When connecting to a dirserver fails, try another one
3229 immediately. (This was already working for non-win32 Tors.)
3230 - Stop trying to parse $HOME on win32 when hunting for default
3232 - Make tor-resolve.c work on win32 by calling network_init().
3234 o Bugfixes on 0.0.9 (other):
3235 - Make 0.0.9.x build on Solaris again.
3236 - Due to a fencepost error, we were blowing away the \n when reporting
3237 confvalue items in the controller. So asking for multiple config
3238 values at once couldn't work.
3239 - When listing circuits that are pending on an opening OR connection,
3240 if we're an OR we were listing circuits that *end* at us as
3241 being pending on every listener, dns/cpu worker, etc. Stop that.
3242 - Dirservers were failing to create 'running-routers' or 'directory'
3243 strings if we had more than some threshold of routers. Fix them so
3244 they can handle any number of routers.
3245 - Fix a superficial "Duplicate mark for close" bug.
3246 - Stop checking for clock skew for OR connections, even for servers.
3247 - Fix a fencepost error that was chopping off the last letter of any
3248 nickname that is the maximum allowed nickname length.
3249 - Update URLs in log messages so they point to the new website.
3250 - Fix a potential problem in mangling server private keys while
3251 writing to disk (not triggered yet, as far as we know).
3252 - Include the licenses for other free software we include in Tor,
3253 now that we're shipping binary distributions more regularly.
3256 Changes in version 0.0.9.1 - 2004-12-15
3257 o Bugfixes on 0.0.9:
3258 - Make hibernation actually work.
3259 - Make HashedControlPassword config option work.
3260 - When we're reporting event circuit status to a controller,
3261 don't use the stream status code.
3264 Changes in version 0.0.9 - 2004-12-12
3266 - Clean up manpage and torrc.sample file.
3267 - Clean up severities and text of log warnings.
3269 - Make servers trigger an assert when they enter hibernation.
3272 Changes in version 0.0.9rc7 - 2004-12-08
3273 o Bugfixes on 0.0.9rc:
3274 - Fix a stack-trashing crash when an exit node begins hibernating.
3275 - Avoid looking at unallocated memory while considering which
3276 ports we need to build circuits to cover.
3277 - Stop a sigpipe: when an 'end' cell races with eof from the app,
3278 we shouldn't hold-open-until-flush if the eof arrived first.
3279 - Fix a bug with init_cookie_authentication() in the controller.
3280 - When recommending new-format log lines, if the upper bound is
3281 LOG_ERR, leave it implicit.
3283 o Bugfixes on 0.0.8.1:
3284 - Fix a whole slew of memory leaks.
3285 - Fix isspace() and friends so they still make Solaris happy
3286 but also so they don't trigger asserts on win32.
3287 - Fix parse_iso_time on platforms without strptime (eg win32).
3288 - win32: tolerate extra "readable" events better.
3289 - win32: when being multithreaded, leave parent fdarray open.
3290 - Make unit tests work on win32.
3293 Changes in version 0.0.9rc6 - 2004-12-06
3294 o Bugfixes on 0.0.9pre:
3295 - Clean up some more integer underflow opportunities (not exploitable
3297 - While hibernating, hup should not regrow our listeners.
3298 - Send an end to the streams we close when we hibernate, rather
3299 than just chopping them off.
3300 - React to eof immediately on non-open edge connections.
3302 o Bugfixes on 0.0.8.1:
3303 - Calculate timeout for waiting for a connected cell from the time
3304 we sent the begin cell, not from the time the stream started. If
3305 it took a long time to establish the circuit, we would time out
3306 right after sending the begin cell.
3307 - Fix router_compare_addr_to_addr_policy: it was not treating a port
3308 of * as always matching, so we were picking reject *:* nodes as
3309 exit nodes too. Oops.
3312 - New circuit building strategy: keep a list of ports that we've
3313 used in the past 6 hours, and always try to have 2 circuits open
3314 or on the way that will handle each such port. Seed us with port
3315 80 so web users won't complain that Tor is "slow to start up".
3316 - Make kill -USR1 dump more useful stats about circuits.
3317 - When warning about retrying or giving up, print the address, so
3318 the user knows which one it's talking about.
3319 - If you haven't used a clean circuit in an hour, throw it away,
3320 just to be on the safe side. (This means after 6 hours a totally
3321 unused Tor client will have no circuits open.)
3324 Changes in version 0.0.9rc5 - 2004-12-01
3325 o Bugfixes on 0.0.8.1:
3326 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
3327 - Let resolve conns retry/expire also, rather than sticking around
3329 - If we are using select, make sure we stay within FD_SETSIZE.
3331 o Bugfixes on 0.0.9pre:
3332 - Fix integer underflow in tor_vsnprintf() that may be exploitable,
3333 but doesn't seem to be currently; thanks to Ilja van Sprundel for
3335 - If anybody set DirFetchPostPeriod, give them StatusFetchPeriod
3336 instead. Impose minima and maxima for all *Period options; impose
3337 even tighter maxima for fetching if we are a caching dirserver.
3338 Clip rather than rejecting.
3339 - Fetch cached running-routers from servers that serve it (that is,
3340 authdirservers and servers running 0.0.9rc5-cvs or later.)
3343 - Accept *:706 (silc) in default exit policy.
3344 - Implement new versioning format for post 0.1.
3345 - Support "foo.nickname.exit" addresses, to let Alice request the
3346 address "foo" as viewed by exit node "nickname". Based on a patch
3348 - Make tor --version --version dump the cvs Id of every file.
3351 Changes in version 0.0.9rc4 - 2004-11-28
3352 o Bugfixes on 0.0.8.1:
3353 - Make windows sockets actually non-blocking (oops), and handle
3354 win32 socket errors better.
3356 o Bugfixes on 0.0.9rc1:
3357 - Actually catch the -USR2 signal.
3360 Changes in version 0.0.9rc3 - 2004-11-25
3361 o Bugfixes on 0.0.8.1:
3362 - Flush the log file descriptor after we print "Tor opening log file",
3363 so we don't see those messages days later.
3365 o Bugfixes on 0.0.9rc1:
3366 - Make tor-resolve work again.
3367 - Avoid infinite loop in tor-resolve if tor hangs up on it.
3368 - Fix an assert trigger for clients/servers handling resolves.
3371 Changes in version 0.0.9rc2 - 2004-11-24
3372 o Bugfixes on 0.0.9rc1:
3373 - I broke socks5 support while fixing the eof bug.
3374 - Allow unitless bandwidths and intervals; they default to bytes
3376 - New servers don't start out hibernating; they are active until
3377 they run out of bytes, so they have a better estimate of how
3378 long it takes, and so their operators can know they're working.
3381 Changes in version 0.0.9rc1 - 2004-11-23
3382 o Bugfixes on 0.0.8.1:
3383 - Finally fix a bug that's been plaguing us for a year:
3384 With high load, circuit package window was reaching 0. Whenever
3385 we got a circuit-level sendme, we were reading a lot on each
3386 socket, but only writing out a bit. So we would eventually reach
3387 eof. This would be noticed and acted on even when there were still
3388 bytes sitting in the inbuf.
3389 - When poll() is interrupted, we shouldn't believe the revents values.
3391 o Bugfixes on 0.0.9pre6:
3392 - Fix hibernate bug that caused pre6 to be broken.
3393 - Don't keep rephist info for routers that haven't had activity for
3394 24 hours. (This matters now that clients have keys, since we track
3396 - Never call close_temp_logs while validating log options.
3397 - Fix backslash-escaping on tor.sh.in and torctl.in.
3400 - Implement weekly/monthly/daily accounting: now you specify your
3401 hibernation properties by
3402 AccountingMax N bytes|KB|MB|GB|TB
3403 AccountingStart day|week|month [day] HH:MM
3404 Defaults to "month 1 0:00".
3405 - Let bandwidth and interval config options be specified as 5 bytes,
3406 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
3407 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
3408 get back to normal.)
3409 - If your requested entry or exit node has advertised bandwidth 0,
3411 - Be more greedy about filling up relay cells -- we try reading again
3412 once we've processed the stuff we read, in case enough has arrived
3413 to fill the last cell completely.
3414 - Apply NT service patch from Osamu Fujino. Still needs more work.
3417 Changes in version 0.0.9pre6 - 2004-11-15
3418 o Bugfixes on 0.0.8.1:
3419 - Fix assert failure on malformed socks4a requests.
3420 - Use identity comparison, not nickname comparison, to choose which
3421 half of circuit-ID-space each side gets to use. This is needed
3422 because sometimes we think of a router as a nickname, and sometimes
3423 as a hex ID, and we can't predict what the other side will do.
3424 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
3425 write() call will fail and we handle it there.
3426 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
3427 and smartlist_len, which are two major profiling offenders.
3429 o Bugfixes on 0.0.9pre5:
3430 - Fix a bug in read_all that was corrupting config files on windows.
3431 - When we're raising the max number of open file descriptors to
3432 'unlimited', don't log that we just raised it to '-1'.
3433 - Include event code with events, as required by control-spec.txt.
3434 - Don't give a fingerprint when clients do --list-fingerprint:
3435 it's misleading, because it will never be the same again.
3436 - Stop using strlcpy in tor_strndup, since it was slowing us
3438 - Remove warn on startup about missing cached-directory file.
3439 - Make kill -USR1 work again.
3440 - Hibernate if we start tor during the "wait for wakeup-time" phase
3441 of an accounting interval. Log our hibernation plans better.
3442 - Authoritative dirservers now also cache their directory, so they
3443 have it on start-up.
3446 - Fetch running-routers; cache running-routers; compress
3447 running-routers; serve compressed running-routers.z
3448 - Add NSI installer script contributed by J Doe.
3449 - Commit VC6 and VC7 workspace/project files.
3450 - Commit a tor.spec for making RPM files, with help from jbash.
3451 - Add contrib/torctl.in contributed by Glenn Fink.
3452 - Implement the control-spec's SAVECONF command, to write your
3453 configuration to torrc.
3454 - Get cookie authentication for the controller closer to working.
3455 - Include control-spec.txt in the tarball.
3456 - When set_conf changes our server descriptor, upload a new copy.
3457 But don't upload it too often if there are frequent changes.
3458 - Document authentication config in man page, and document signals
3460 - Clean up confusing parts of man page and torrc.sample.
3461 - Make expand_filename handle ~ and ~username.
3462 - Use autoconf to enable largefile support where necessary. Use
3463 ftello where available, since ftell can fail at 2GB.
3464 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
3465 log more informatively.
3466 - Give a slightly more useful output for "tor -h".
3467 - Refuse application socks connections to port 0.
3468 - Check clock skew for verified servers, but allow unverified
3469 servers and clients to have any clock skew.
3470 - Break DirFetchPostPeriod into:
3471 - DirFetchPeriod for fetching full directory,
3472 - StatusFetchPeriod for fetching running-routers,
3473 - DirPostPeriod for posting server descriptor,
3474 - RendPostPeriod for posting hidden service descriptors.
3475 - Make sure the hidden service descriptors are at a random offset
3476 from each other, to hinder linkability.
3479 Changes in version 0.0.9pre5 - 2004-11-09
3480 o Bugfixes on 0.0.9pre4:
3481 - Fix a seg fault in unit tests (doesn't affect main program).
3482 - Fix an assert bug where a hidden service provider would fail if
3483 the first hop of his rendezvous circuit was down.
3484 - Hidden service operators now correctly handle version 1 style
3485 INTRODUCE1 cells (nobody generates them still, so not a critical
3487 - If do_hup fails, actually notice.
3488 - Handle more errnos from accept() without closing the listener.
3489 Some OpenBSD machines were closing their listeners because
3490 they ran out of file descriptors.
3491 - Send resolve cells to exit routers that are running a new
3492 enough version of the resolve code to work right.
3493 - Better handling of winsock includes on non-MSV win32 compilers.
3494 - Some people had wrapped their tor client/server in a script
3495 that would restart it whenever it died. This did not play well
3496 with our "shut down if your version is obsolete" code. Now people
3497 don't fetch a new directory if their local cached version is
3499 - Make our autogen.sh work on ksh as well as bash.
3502 - Hibernation: New config option "AccountingMaxKB" lets you
3503 set how many KBytes per month you want to allow your server to
3504 consume. Rather than spreading those bytes out evenly over the
3505 month, we instead hibernate for some of the month and pop up
3506 at a deterministic time, work until the bytes are consumed, then
3507 hibernate again. Config option "MonthlyAccountingStart" lets you
3508 specify which day of the month your billing cycle starts on.
3509 - Control interface: a separate program can now talk to your
3510 client/server over a socket, and get/set config options, receive
3511 notifications of circuits and streams starting/finishing/dying,
3512 bandwidth used, etc. The next step is to get some GUIs working.
3513 Let us know if you want to help out. See doc/control-spec.txt .
3514 - Ship a contrib/tor-control.py as an example script to interact
3515 with the control port.
3516 - "tor --hash-password zzyxz" will output a salted password for
3517 use in authenticating to the control interface.
3518 - New log format in config:
3519 "Log minsev[-maxsev] stdout|stderr|syslog" or
3520 "Log minsev[-maxsev] file /var/foo"
3523 - DirPolicy config option, to let people reject incoming addresses
3524 from their dirserver.
3525 - "tor --list-fingerprint" will list your identity key fingerprint
3527 - Add "pass" target for RedirectExit, to make it easier to break
3528 out of a sequence of RedirectExit rules.
3529 - Clients now generate a TLS cert too, in preparation for having
3530 them act more like real nodes.
3531 - Ship src/win32/ in the tarball, so people can use it to build.
3532 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
3534 - New "router-status" line in directory, to better bind each verified
3535 nickname to its identity key.
3536 - Deprecate unofficial config option abbreviations, and abbreviations
3537 not on the command line.
3538 - Add a pure-C tor-resolve implementation.
3539 - Use getrlimit and friends to ensure we can reach MaxConn (currently
3540 1024) file descriptors.
3542 o Code security improvements, inspired by Ilja:
3543 - Replace sprintf with snprintf. (I think they were all safe, but
3545 - Replace strcpy/strncpy with strlcpy in more places.
3546 - Avoid strcat; use snprintf or strlcat instead.
3547 - snprintf wrapper with consistent (though not C99) overflow behavior.
3550 Changes in version 0.0.9pre4 - 2004-10-17
3551 o Bugfixes on 0.0.9pre3:
3552 - If the server doesn't specify an exit policy, use the real default
3553 exit policy, not reject *:*.
3554 - Ignore fascistfirewall when uploading/downloading hidden service
3555 descriptors, since we go through Tor for those; and when using
3556 an HttpProxy, since we assume it can reach them all.
3557 - When looking for an authoritative dirserver, use only the ones
3558 configured at boot. Don't bother looking in the directory.
3559 - The rest of the fix for get_default_conf_file() on older win32.
3560 - Make 'Routerfile' config option obsolete.
3563 - New 'MyFamily nick1,...' config option for a server to
3564 specify other servers that shouldn't be used in the same circuit
3565 with it. Only believed if nick1 also specifies us.
3566 - New 'NodeFamily nick1,nick2,...' config option for a client to
3567 specify nodes that it doesn't want to use in the same circuit.
3568 - New 'Redirectexit pattern address:port' config option for a
3569 server to redirect exit connections, e.g. to a local squid.
3572 Changes in version 0.0.9pre3 - 2004-10-13
3573 o Bugfixes on 0.0.8.1:
3574 - Better torrc example lines for dirbindaddress and orbindaddress.
3575 - Improved bounds checking on parsed ints (e.g. config options and
3576 the ones we find in directories.)
3577 - Better handling of size_t vs int, so we're more robust on 64
3579 - Fix the rest of the bug where a newly started OR would appear
3580 as unverified even after we've added his fingerprint and hupped
3582 - Fix a bug from 0.0.7: when read() failed on a stream, we would
3583 close it without sending back an end. So 'connection refused'
3584 would simply be ignored and the user would get no response.
3586 o Bugfixes on 0.0.9pre2:
3587 - Serving the cached-on-disk directory to people is bad. We now
3588 provide no directory until we've fetched a fresh one.
3589 - Workaround for bug on windows where cached-directories get crlf
3591 - Make get_default_conf_file() work on older windows too.
3592 - If we write a *:* exit policy line in the descriptor, don't write
3593 any more exit policy lines.
3596 - Use only 0.0.9pre1 and later servers for resolve cells.
3597 - Make the dirservers file obsolete.
3598 - Include a dir-signing-key token in directories to tell the
3599 parsing entity which key is being used to sign.
3600 - Remove the built-in bulky default dirservers string.
3601 - New config option "Dirserver %s:%d [fingerprint]", which can be
3602 repeated as many times as needed. If no dirservers specified,
3603 default to moria1,moria2,tor26.
3604 - Make moria2 advertise a dirport of 80, so people behind firewalls
3605 will be able to get a directory.
3606 - Http proxy support
3607 - Dirservers translate requests for http://%s:%d/x to /x
3608 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
3609 be routed through this host.
3610 - Clients ask for /tor/x rather than /x for new enough dirservers.
3611 This way we can one day coexist peacefully with apache.
3612 - Clients specify a "Host: %s%d" http header, to be compatible
3613 with more proxies, and so running squid on an exit node can work.
3616 Changes in version 0.0.8.1 - 2004-10-13
3618 - Fix a seg fault that can be triggered remotely for Tor
3619 clients/servers with an open dirport.
3620 - Fix a rare assert trigger, where routerinfos for entries in
3621 our cpath would expire while we're building the path.
3622 - Fix a bug in OutboundBindAddress so it (hopefully) works.
3623 - Fix a rare seg fault for people running hidden services on
3624 intermittent connections.
3625 - Fix a bug in parsing opt keywords with objects.
3626 - Fix a stale pointer assert bug when a stream detaches and
3628 - Fix a string format vulnerability (probably not exploitable)
3629 in reporting stats locally.
3630 - Fix an assert trigger: sometimes launching circuits can fail
3631 immediately, e.g. because too many circuits have failed recently.
3632 - Fix a compile warning on 64 bit platforms.
3635 Changes in version 0.0.9pre2 - 2004-10-03
3637 - Make fetching a cached directory work for 64-bit platforms too.
3638 - Make zlib.h a required header, not an optional header.
3641 Changes in version 0.0.9pre1 - 2004-10-01
3643 - Stop using separate defaults for no-config-file and
3644 empty-config-file. Now you have to explicitly turn off SocksPort,
3645 if you don't want it open.
3646 - Fix a bug in OutboundBindAddress so it (hopefully) works.
3647 - Improve man page to mention more of the 0.0.8 features.
3648 - Fix a rare seg fault for people running hidden services on
3649 intermittent connections.
3650 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
3652 - Fix more dns related bugs: send back resolve_failed and end cells
3653 more reliably when the resolve fails, rather than closing the
3654 circuit and then trying to send the cell. Also attach dummy resolve
3655 connections to a circuit *before* calling dns_resolve(), to fix
3656 a bug where cached answers would never be sent in RESOLVED cells.
3657 - When we run out of disk space, or other log writing error, don't
3658 crash. Just stop logging to that log and continue.
3659 - We were starting to daemonize before we opened our logs, so if
3660 there were any problems opening logs, we would complain to stderr,
3661 which wouldn't work, and then mysteriously exit.
3662 - Fix a rare bug where sometimes a verified OR would connect to us
3663 before he'd uploaded his descriptor, which would cause us to
3664 assign conn->nickname as though he's unverified. Now we look through
3665 the fingerprint list to see if he's there.
3666 - Fix a rare assert trigger, where routerinfos for entries in
3667 our cpath would expire while we're building the path.
3670 - Clients can ask dirservers for /dir.z to get a compressed version
3671 of the directory. Only works for servers running 0.0.9, of course.
3672 - Make clients cache directories and use them to seed their router
3673 lists at startup. This means clients have a datadir again.
3674 - Configuration infrastructure support for warning on obsolete
3676 - Respond to content-encoding headers by trying to uncompress as
3678 - Reply with a deflated directory when a client asks for "dir.z".
3679 We could use allow-encodings instead, but allow-encodings isn't
3680 specified in HTTP 1.0.
3681 - Raise the max dns workers from 50 to 100.
3682 - Discourage people from setting their dirfetchpostperiod more often
3683 than once per minute.
3684 - Protect dirservers from overzealous descriptor uploading -- wait
3685 10 seconds after directory gets dirty, before regenerating.
3688 Changes in version 0.0.8 - 2004-08-25
3689 o Port it to SunOS 5.9 / Athena
3692 Changes in version 0.0.8rc2 - 2004-08-20
3693 o Make it compile on cygwin again.
3694 o When picking unverified routers, skip those with low uptime and/or
3695 low bandwidth, depending on what properties you care about.
3698 Changes in version 0.0.8rc1 - 2004-08-18
3699 o Changes from 0.0.7.3:
3701 - Fix assert triggers: if the other side returns an address 0.0.0.0,
3702 don't put it into the client dns cache.
3703 - If a begin failed due to exit policy, but we believe the IP address
3704 should have been allowed, switch that router to exitpolicy reject *:*
3705 until we get our next directory.
3707 - Clients choose nodes proportional to advertised bandwidth.
3708 - Avoid using nodes with low uptime as introduction points.
3709 - Handle servers with dynamic IP addresses: don't replace
3710 options->Address with the resolved one at startup, and
3711 detect our address right before we make a routerinfo each time.
3712 - 'FascistFirewall' option to pick dirservers and ORs on specific
3713 ports; plus 'FirewallPorts' config option to tell FascistFirewall
3714 which ports are open. (Defaults to 80,443)
3715 - Be more aggressive about trying to make circuits when the network
3716 has changed (e.g. when you unsuspend your laptop).
3717 - Check for time skew on http headers; report date in response to
3719 - If the entrynode config line has only one node, don't pick it as
3721 - Add strict{entry|exit}nodes config options. If set to 1, then
3722 we refuse to build circuits that don't include the specified entry
3724 - OutboundBindAddress config option, to bind to a specific
3725 IP address for outgoing connect()s.
3726 - End truncated log entries (e.g. directories) with "[truncated]".
3728 o Patches to 0.0.8preX:
3730 - Patches to compile and run on win32 again (maybe)?
3731 - Fix crash when looking for ~/.torrc with no $HOME set.
3732 - Fix a race bug in the unit tests.
3733 - Handle verified/unverified name collisions better when new
3734 routerinfo's arrive in a directory.
3735 - Sometimes routers were getting entered into the stats before
3736 we'd assigned their identity_digest. Oops.
3737 - Only pick and establish intro points after we've gotten a
3740 - AllowUnverifiedNodes config option to let circuits choose no-name
3741 routers in entry,middle,exit,introduction,rendezvous positions.
3742 Allow middle and rendezvous positions by default.
3743 - Add a man page for tor-resolve.
3746 Changes in version 0.0.7.3 - 2004-08-12
3747 o Stop dnsworkers from triggering an assert failure when you
3748 ask them to resolve the host "".
3751 Changes in version 0.0.8pre3 - 2004-08-09
3752 o Changes from 0.0.7.2:
3753 - Allow multiple ORs with same nickname in routerlist -- now when
3754 people give us one identity key for a nickname, then later
3755 another, we don't constantly complain until the first expires.
3756 - Remember used bandwidth (both in and out), and publish 15-minute
3757 snapshots for the past day into our descriptor.
3758 - You can now fetch $DIRURL/running-routers to get just the
3759 running-routers line, not the whole descriptor list. (But
3760 clients don't use this yet.)
3761 - When people mistakenly use Tor as an http proxy, point them
3762 at the tor-doc.html rather than the INSTALL.
3763 - Remove our mostly unused -- and broken -- hex_encode()
3764 function. Use base16_encode() instead. (Thanks to Timo Lindfors
3765 for pointing out this bug.)
3766 - Rotate onion keys every 12 hours, not every 2 hours, so we have
3767 fewer problems with people using the wrong key.
3768 - Change the default exit policy to reject the default edonkey,
3769 kazaa, gnutella ports.
3770 - Add replace_file() to util.[ch] to handle win32's rename().
3772 o Changes from 0.0.8preX:
3773 - Fix two bugs in saving onion keys to disk when rotating, so
3774 hopefully we'll get fewer people using old onion keys.
3775 - Fix an assert error that was making SocksPolicy not work.
3776 - Be willing to expire routers that have an open dirport -- it's
3777 just the authoritative dirservers we want to not forget.
3778 - Reject tor-resolve requests for .onion addresses early, so we
3779 don't build a whole rendezvous circuit and then fail.
3780 - When you're warning a server that he's unverified, don't cry
3782 - Fix a race condition: don't try to extend onto a connection
3783 that's still handshaking.
3784 - For servers in clique mode, require the conn to be open before
3785 you'll choose it for your path.
3786 - Fix some cosmetic bugs about duplicate mark-for-close, lack of
3787 end relay cell, etc.
3788 - Measure bandwidth capacity over the last 24 hours, not just 12
3789 - Bugfix: authoritative dirservers were making and signing a new
3790 directory for each client, rather than reusing the cached one.
3793 Changes in version 0.0.8pre2 - 2004-08-04
3794 o Changes from 0.0.7.2:
3796 - Check directory signature _before_ you decide whether you're
3797 you're running an obsolete version and should exit.
3798 - Check directory signature _before_ you parse the running-routers
3799 list to decide who's running or verified.
3800 - Bugfixes and features:
3801 - Check return value of fclose while writing to disk, so we don't
3802 end up with broken files when servers run out of disk space.
3803 - Log a warning if the user uses an unsafe socks variant, so people
3804 are more likely to learn about privoxy or socat.
3805 - Dirservers now include RFC1123-style dates in the HTTP headers,
3806 which one day we will use to better detect clock skew.
3808 o Changes from 0.0.8pre1:
3809 - Make it compile without warnings again on win32.
3810 - Log a warning if you're running an unverified server, to let you
3811 know you might want to get it verified.
3812 - Only pick a default nickname if you plan to be a server.
3815 Changes in version 0.0.8pre1 - 2004-07-23
3817 - Made our unit tests compile again on OpenBSD 3.5, and tor
3818 itself compile again on OpenBSD on a sparc64.
3819 - We were neglecting milliseconds when logging on win32, so
3820 everything appeared to happen at the beginning of each second.
3823 - 'Extend' relay cell payloads now include the digest of the
3824 intended next hop's identity key. Now we can verify that we're
3825 extending to the right router, and also extend to routers we
3826 hadn't heard of before.
3829 - Tor nodes can now act as relays (with an advertised ORPort)
3830 without being manually verified by the dirserver operators.
3831 - Uploaded descriptors of unverified routers are now accepted
3832 by the dirservers, and included in the directory.
3833 - Verified routers are listed by nickname in the running-routers
3834 list; unverified routers are listed as "$<fingerprint>".
3835 - We now use hash-of-identity-key in most places rather than
3836 nickname or addr:port, for improved security/flexibility.
3837 - To avoid Sybil attacks, paths still use only verified servers.
3838 But now we have a chance to play around with hybrid approaches.
3839 - Nodes track bandwidth usage to estimate capacity (not used yet).
3840 - ClientOnly option for nodes that never want to become servers.
3841 - Directory caching.
3842 - "AuthoritativeDir 1" option for the official dirservers.
3843 - Now other nodes (clients and servers) will cache the latest
3844 directory they've pulled down.
3845 - They can enable their DirPort to serve it to others.
3846 - Clients will pull down a directory from any node with an open
3847 DirPort, and check the signature/timestamp correctly.
3848 - Authoritative dirservers now fetch directories from other
3849 authdirservers, to stay better synced.
3850 - Running-routers list tells who's down also, along with noting
3851 if they're verified (listed by nickname) or unverified (listed
3853 - Allow dirservers to serve running-router list separately.
3854 This isn't used yet.
3855 - ORs connect-on-demand to other ORs
3856 - If you get an extend cell to an OR you're not connected to,
3857 connect, handshake, and forward the create cell.
3858 - The authoritative dirservers stay connected to everybody,
3859 and everybody stays connected to 0.0.7 servers, but otherwise
3860 clients/servers expire unused connections after 5 minutes.
3861 - When servers get a sigint, they delay 30 seconds (refusing new
3862 connections) then exit. A second sigint causes immediate exit.
3863 - File and name management:
3864 - Look for .torrc if no CONFDIR "torrc" is found.
3865 - If no datadir is defined, then choose, make, and secure ~/.tor
3867 - If torrc not found, exitpolicy reject *:*.
3868 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
3869 - If no nickname is defined, derive default from hostname.
3870 - Rename secret key files, e.g. identity.key -> secret_id_key,
3871 to discourage people from mailing their identity key to tor-ops.
3872 - Refuse to build a circuit before the directory has arrived --
3873 it won't work anyway, since you won't know the right onion keys
3875 - Try other dirservers immediately if the one you try is down. This
3876 should tolerate down dirservers better now.
3877 - Parse tor version numbers so we can do an is-newer-than check
3878 rather than an is-in-the-list check.
3879 - New socks command 'resolve', to let us shim gethostbyname()
3881 - A 'tor_resolve' script to access the socks resolve functionality.
3882 - A new socks-extensions.txt doc file to describe our
3883 interpretation and extensions to the socks protocols.
3884 - Add a ContactInfo option, which gets published in descriptor.
3885 - Publish OR uptime in descriptor (and thus in directory) too.
3886 - Write tor version at the top of each log file
3887 - New docs in the tarball:
3889 - Document that you should proxy your SSL traffic too.
3892 Changes in version 0.0.7.2 - 2004-07-07
3893 o A better fix for the 0.0.0.0 problem, that will hopefully
3894 eliminate the remaining related assertion failures.
3897 Changes in version 0.0.7.1 - 2004-07-04
3898 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
3899 since internally we use 0.0.0.0 to signify "not yet resolved".
3902 Changes in version 0.0.7 - 2004-06-07
3903 o Updated the man page to reflect the new features.
3906 Changes in version 0.0.7rc2 - 2004-06-06
3907 o Changes from 0.0.7rc1:
3908 - Make it build on Win32 again.
3909 o Changes from 0.0.6.2:
3910 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
3914 Changes in version 0.0.7rc1 - 2004-06-02
3916 - On sighup, we were adding another log without removing the first
3917 one. So log messages would get duplicated n times for n sighups.
3918 - Several cases of using a connection after we'd freed it. The
3919 problem was that connections that are pending resolve are in both
3920 the pending_resolve tree, and also the circuit's resolving_streams
3921 list. When you want to remove one, you must remove it from both.
3922 - Fix a double-mark-for-close where an end cell arrived for a
3923 resolving stream, and then the resolve failed.
3924 - Check directory signatures based on name of signer, not on whom
3925 we got the directory from. This will let us cache directories more
3928 - Crank up some of our constants to handle more users.
3931 Changes in version 0.0.7pre1 - 2004-06-02
3932 o Fixes for crashes and other obnoxious bugs:
3933 - Fix an epipe bug: sometimes when directory connections failed
3934 to connect, we would give them a chance to flush before closing
3936 - When we detached from a circuit because of resolvefailed, we
3937 would immediately try the same circuit twice more, and then
3938 give up on the resolve thinking we'd tried three different
3940 - Limit the number of intro circuits we'll attempt to build for a
3941 hidden service per 15-minute period.
3942 - Check recommended-software string *early*, before actually parsing
3943 the directory. Thus we can detect an obsolete version and exit,
3944 even if the new directory format doesn't parse.
3945 o Fixes for security bugs:
3946 - Remember which nodes are dirservers when you startup, and if a
3947 random OR enables his dirport, don't automatically assume he's
3948 a trusted dirserver.
3950 - Directory connections were asking the wrong poll socket to
3951 start writing, and not asking themselves to start writing.
3952 - When we detached from a circuit because we sent a begin but
3953 didn't get a connected, we would use it again the first time;
3954 but after that we would correctly switch to a different one.
3955 - Stop warning when the first onion decrypt attempt fails; they
3956 will sometimes legitimately fail now that we rotate keys.
3957 - Override unaligned-access-ok check when $host_cpu is ia64 or
3958 arm. Apparently they allow it but the kernel whines.
3959 - Dirservers try to reconnect periodically too, in case connections
3961 - Fix some memory leaks in directory servers.
3962 - Allow backslash in Win32 filenames.
3963 - Made Tor build complain-free on FreeBSD, hopefully without
3964 breaking other BSD builds. We'll see.
3966 - Doxygen markup on all functions and global variables.
3967 - Make directory functions update routerlist, not replace it. So
3968 now directory disagreements are not so critical a problem.
3969 - Remove the upper limit on number of descriptors in a dirserver's
3970 directory (not that we were anywhere close).
3971 - Allow multiple logfiles at different severity ranges.
3972 - Allow *BindAddress to specify ":port" rather than setting *Port
3973 separately. Allow multiple instances of each BindAddress config
3974 option, so you can bind to multiple interfaces if you want.
3975 - Allow multiple exit policy lines, which are processed in order.
3976 Now we don't need that huge line with all the commas in it.
3977 - Enable accept/reject policies on SOCKS connections, so you can bind
3978 to 0.0.0.0 but still control who can use your OP.
3981 Changes in version 0.0.6.2 - 2004-05-16
3982 o Our integrity-checking digest was checking only the most recent cell,
3983 not the previous cells like we'd thought.
3984 Thanks to Stefan Mark for finding the flaw!
3987 Changes in version 0.0.6.1 - 2004-05-06
3988 o Fix two bugs in our AES counter-mode implementation (this affected
3989 onion-level stream encryption, but not TLS-level). It turns
3990 out we were doing something much more akin to a 16-character
3991 polyalphabetic cipher. Oops.
3992 Thanks to Stefan Mark for finding the flaw!
3993 o Retire moria3 as a directory server, and add tor26 as a directory
3997 Changes in version 0.0.6 - 2004-05-02
4001 Changes in version 0.0.6rc4 - 2004-05-01
4002 o Update the built-in dirservers list to use the new directory format
4003 o Fix a rare seg fault: if a node offering a hidden service attempts
4004 to build a circuit to Alice's rendezvous point and fails before it
4005 reaches the last hop, it retries with a different circuit, but
4007 o Handle windows socket errors correctly.
4010 Changes in version 0.0.6rc3 - 2004-04-28
4011 o Don't expire non-general excess circuits (if we had enough
4012 circuits open, we were expiring rendezvous circuits -- even
4013 when they had a stream attached. oops.)
4014 o Fetch randomness from /dev/urandom better (not via fopen/fread)
4015 o Better debugging for tls errors
4016 o Some versions of openssl have an SSL_pending function that erroneously
4017 returns bytes when there is a non-application record pending.
4018 o Set Content-Type on the directory and hidserv descriptor.
4019 o Remove IVs from cipher code, since AES-ctr has none.
4020 o Win32 fixes. Tor now compiles on win32 with no warnings/errors.
4021 o We were using an array of length zero in a few places.
4022 o win32's gethostbyname can't resolve an IP to an IP.
4023 o win32's close can't close a socket.
4026 Changes in version 0.0.6rc2 - 2004-04-26
4027 o Fix a bug where we were closing tls connections intermittently.
4028 It turns out openssl keeps its errors around -- so if an error
4029 happens, and you don't ask about it, and then another openssl
4030 operation happens and succeeds, and you ask if there was an error,
4031 it tells you about the first error. Fun fun.
4032 o Fix a bug that's been lurking since 27 may 03 (!)
4033 When passing back a destroy cell, we would use the wrong circ id.
4034 'Mostly harmless', but still worth fixing.
4035 o Since we don't support truncateds much, don't bother sending them;
4036 just close the circ.
4037 o check for <machine/limits.h> so we build on NetBSD again (I hope).
4038 o don't crash if a conn that sent a begin has suddenly lost its circuit
4039 (this was quite rare).
4042 Changes in version 0.0.6rc1 - 2004-04-25
4043 o We now rotate link (tls context) keys and onion keys.
4044 o CREATE cells now include oaep padding, so you can tell
4045 if you decrypted them correctly.
4046 o Add bandwidthburst to server descriptor.
4047 o Directories now say which dirserver signed them.
4048 o Use a tor_assert macro that logs failed assertions too.
4051 Changes in version 0.0.6pre5 - 2004-04-18
4052 o changes from 0.0.6pre4:
4053 - make tor build on broken freebsd 5.2 installs
4054 - fix a failed assert when you try an intro point, get a nack, and try
4055 a second one and it works.
4056 - when alice uses a port that the hidden service doesn't accept,
4057 it now sends back an end cell (denied by exit policy). otherwise
4058 alice would just have to wait to time out.
4059 - fix another rare bug: when we had tried all the intro
4060 points for a hidden service, we fetched the descriptor
4061 again, but we left our introcirc thinking it had already
4062 sent an intro, so it kept waiting for a response...
4063 - bugfix: when you sleep your hidden-service laptop, as soon
4064 as it wakes up it tries to upload a service descriptor, but
4065 socketpair fails for some reason (localhost not up yet?).
4066 now we simply give up on that upload, and we'll try again later.
4067 i'd still like to find the bug though.
4068 - if an intro circ waiting for an ack dies before getting one, then
4070 - we were reusing stale service descriptors and refetching usable
4074 Changes in version 0.0.6pre4 - 2004-04-14
4075 o changes from 0.0.6pre3:
4076 - when bob fails to connect to the rendezvous point, and his
4077 circ didn't fail because of the rendezvous point itself, then
4078 he retries a couple of times
4079 - we expire introduction and rendezvous circs more thoroughly
4080 (sometimes they were hanging around forever)
4081 - we expire unattached rendezvous streams that have been around
4082 too long (they were sticking around forever).
4083 - fix a measly fencepost error that was crashing everybody with
4087 Changes in version 0.0.6pre3 - 2004-04-14
4088 o changes from 0.0.6pre2:
4089 - make hup work again
4090 - fix some memory leaks for dirservers
4091 - allow more skew in rendezvous descriptor timestamps, to help
4092 handle people like blanu who don't know what time it is
4093 - normal circs are 3 hops, but some rend/intro circs are 4, if
4094 the initiator doesn't get to choose the last hop
4095 - send acks for introductions, so alice can know whether to try
4097 - bob publishes intro points more correctly
4098 o changes from 0.0.5:
4099 - fix an assert trigger that's been plaguing us since the days
4100 of 0.0.2prexx (thanks weasel!)
4101 - retry stream correctly when we fail to connect because of
4102 exit-policy-reject (should try another) or can't-resolve-address
4103 (also should try another, because dns on random internet servers
4105 - when we hup a dirserver and we've *removed* a server from the
4106 approved-routers list, now we remove that server from the
4107 in-memory directories too
4110 Changes in version 0.0.6pre2 - 2004-04-08
4111 o We fixed our base32 implementation. Now it works on all architectures.
4114 Changes in version 0.0.6pre1 - 2004-04-08
4116 - Hidden services and rendezvous points are implemented. Go to
4117 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
4118 hidden services. (This only works via a socks4a proxy such as
4119 Privoxy, and currently it's quite slow.)
4122 Changes in version 0.0.5 - 2004-03-30
4126 Changes in version 0.0.5rc3 - 2004-03-29
4127 o Install torrc as torrc.sample -- we no longer clobber your
4129 o Re-enable recommendedversion checking (we broke it in rc2, oops)
4130 o Add in a 'notice' log level for things the operator should hear
4131 but that aren't warnings
4134 Changes in version 0.0.5rc2 - 2004-03-29
4135 o Hold socks connection open until reply is flushed (if possible)
4136 o Make exit nodes resolve IPs to IPs immediately, rather than asking
4137 the dns farm to do it.
4138 o Fix c99 aliasing warnings in rephist.c
4139 o Don't include server descriptors that are older than 24 hours in the
4141 o Give socks 'reject' replies their whole 15s to attempt to flush,
4142 rather than seeing the 60s timeout and assuming the flush had failed.
4143 o Clean automake droppings from the cvs repository
4146 Changes in version 0.0.5rc1 - 2004-03-28
4147 o Fix mangled-state bug in directory fetching (was causing sigpipes).
4148 o Only build circuits after we've fetched the directory: clients were
4149 using only the directory servers before they'd fetched a directory.
4150 This also means longer startup time; so it goes.
4151 o Fix an assert trigger where an OP would fail to handshake, and we'd
4152 expect it to have a nickname.
4153 o Work around a tsocks bug: do a socks reject when AP connection dies
4154 early, else tsocks goes into an infinite loop.
4157 Changes in version 0.0.4 - 2004-03-26
4158 o When connecting to a dirserver or OR and the network is down,
4162 Changes in version 0.0.3 - 2004-03-26
4163 o Warn and fail if server chose a nickname with illegal characters
4164 o Port to Solaris and Sparc:
4165 - include missing header fcntl.h
4166 - have autoconf find -lsocket -lnsl automatically
4167 - deal with hardware word alignment
4168 - make uname() work (solaris has a different return convention)
4169 - switch from using signal() to sigaction()
4170 o Preliminary work on reputation system:
4171 - Keep statistics on success/fail of connect attempts; they're published
4172 by kill -USR1 currently.
4173 - Add a RunTesting option to try to learn link state by creating test
4174 circuits, even when SocksPort is off.
4175 - Remove unused open circuits when there are too many.
4178 Changes in version 0.0.2 - 2004-03-19
4179 - Include strlcpy and strlcat for safer string ops
4180 - define INADDR_NONE so we compile (but still not run) on solaris
4183 Changes in version 0.0.2pre27 - 2004-03-14
4185 - Allow internal tor networks (we were rejecting internal IPs,
4186 now we allow them if they're set explicitly).
4187 - And fix a few endian issues.
4190 Changes in version 0.0.2pre26 - 2004-03-14
4192 - If a stream times out after 15s without a connected cell, don't
4193 try that circuit again: try a new one.
4194 - Retry streams at most 4 times. Then give up.
4195 - When a dirserver gets a descriptor from an unknown router, it
4196 logs its fingerprint (so the dirserver operator can choose to
4197 accept it even without mail from the server operator).
4198 - Inform unapproved servers when we reject their descriptors.
4199 - Make tor build on Windows again. It works as a client, who knows
4201 - Clearer instructions in the torrc for how to set up a server.
4202 - Be more efficient about reading fd's when our global token bucket
4203 (used for rate limiting) becomes empty.
4205 - Stop asserting that computers always go forward in time. It's
4207 - When we sent a cell (e.g. destroy) and then marked an OR connection
4208 expired, we might close it before finishing a flush if the other
4209 side isn't reading right then.
4210 - Don't allow dirservers to start if they haven't defined
4212 - We were caching transient dns failures. Oops.
4213 - Prevent servers from publishing an internal IP as their address.
4214 - Address a strcat vulnerability in circuit.c
4217 Changes in version 0.0.2pre25 - 2004-03-04
4219 - Put the OR's IP in its router descriptor, not its fqdn. That way
4220 we'll stop being stalled by gethostbyname for nodes with flaky dns,
4223 - If the user typed in an address that didn't resolve, the server
4227 Changes in version 0.0.2pre24 - 2004-03-03
4229 - Fix an assertion failure in dns.c, where we were trying to dequeue
4230 a pending dns resolve even if it wasn't pending
4231 - Fix a spurious socks5 warning about still trying to write after the
4232 connection is finished.
4233 - Hold certain marked_for_close connections open until they're finished
4234 flushing, rather than losing bytes by closing them too early.
4235 - Correctly report the reason for ending a stream
4236 - Remove some duplicate calls to connection_mark_for_close
4237 - Put switch_id and start_daemon earlier in the boot sequence, so it
4238 will actually try to chdir() to options.DataDirectory
4239 - Make 'make test' exit(1) if a test fails; fix some unit tests
4240 - Make tor fail when you use a config option it doesn't know about,
4241 rather than warn and continue.
4242 - Make --version work
4243 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
4246 Changes in version 0.0.2pre23 - 2004-02-29
4248 - Print a statement when the first circ is finished, so the user
4250 - If a relay cell is unrecognized at the end of the circuit,
4251 send back a destroy. (So attacks to mutate cells are more
4253 - New config option 'excludenodes' to avoid certain nodes for circuits.
4254 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
4255 so you can collect coredumps there.
4257 - Fix a bug in tls flushing where sometimes data got wedged and
4258 didn't flush until more data got sent. Hopefully this bug was
4259 a big factor in the random delays we were seeing.
4260 - Make 'connected' cells include the resolved IP, so the client
4261 dns cache actually gets populated.
4262 - Disallow changing from ORPort=0 to ORPort>0 on hup.
4263 - When we time-out on a stream and detach from the circuit, send an
4264 end cell down it first.
4265 - Only warn about an unknown router (in exitnodes, entrynodes,
4266 excludenodes) after we've fetched a directory.
4269 Changes in version 0.0.2pre22 - 2004-02-26
4271 - Servers publish less revealing uname information in descriptors.
4272 - More memory tracking and assertions, to crash more usefully when
4274 - If the default torrc isn't there, just use some default defaults.
4275 Plus provide an internal dirservers file if they don't have one.
4276 - When the user tries to use Tor as an http proxy, give them an http
4277 501 failure explaining that we're a socks proxy.
4278 - Dump a new router.desc on hup, to help confused people who change
4279 their exit policies and then wonder why router.desc doesn't reflect
4281 - Clean up the generic tor.sh init script that we ship with.
4283 - If the exit stream is pending on the resolve, and a destroy arrives,
4284 then the stream wasn't getting removed from the pending list. I
4285 think this was the one causing recent server crashes.
4286 - Use a more robust poll on OSX 10.3, since their poll is flaky.
4287 - When it couldn't resolve any dirservers, it was useless from then on.
4288 Now it reloads the RouterFile (or default dirservers) if it has no
4290 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
4291 many users don't even *have* a /usr/local/sbin/.
4294 Changes in version 0.0.2pre21 - 2004-02-18
4296 - There's a ChangeLog file that actually reflects the changelog.
4297 - There's a 'torify' wrapper script, with an accompanying
4298 tor-tsocks.conf, that simplifies the process of using tsocks for
4299 tor. It even has a man page.
4300 - The tor binary gets installed to sbin rather than bin now.
4301 - Retry streams where the connected cell hasn't arrived in 15 seconds
4302 - Clean up exit policy handling -- get the default out of the torrc,
4303 so we can update it without forcing each server operator to fix
4305 - Allow imaps and pop3s in default exit policy
4307 - Prevent picking middleman nodes as the last node in the circuit
4310 Changes in version 0.0.2pre20 - 2004-01-30
4312 - We now have a deb package, and it's in debian unstable. Go to
4314 - I've split the TotalBandwidth option into BandwidthRate (how many
4315 bytes per second you want to allow, long-term) and
4316 BandwidthBurst (how many bytes you will allow at once before the cap
4317 kicks in). This better token bucket approach lets you, say, set
4318 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
4319 performance while not exceeding your monthly bandwidth quota.
4320 - Push out a tls record's worth of data once you've got it, rather
4321 than waiting until you've read everything waiting to be read. This
4322 may improve performance by pipelining better. We'll see.
4323 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
4324 from failed circuits (if they haven't been connected yet) and attach
4326 - Expire old streams that haven't managed to connect. Some day we'll
4327 have them reattach to new circuits instead.
4330 - Fix several memory leaks that were causing servers to become bloated
4332 - Fix a few very rare assert triggers. A few more remain.
4333 - Setuid to User _before_ complaining about running as root.
4336 Changes in version 0.0.2pre19 - 2004-01-07
4338 - Fix deadlock condition in dns farm. We were telling a child to die by
4339 closing the parent's file descriptor to him. But newer children were
4340 inheriting the open file descriptor from the parent, and since they
4341 weren't closing it, the socket never closed, so the child never read
4342 eof, so he never knew to exit. Similarly, dns workers were holding
4343 open other sockets, leading to all sorts of chaos.
4344 - New cleaner daemon() code for forking and backgrounding.
4345 - If you log to a file, it now prints an entry at the top of the
4346 logfile so you know it's working.
4347 - The onionskin challenge length was 30 bytes longer than necessary.
4348 - Started to patch up the spec so it's not quite so out of date.
4351 Changes in version 0.0.2pre18 - 2004-01-02
4353 - Fix endian issues with the 'integrity' field in the relay header.
4354 - Fix a potential bug where connections in state
4355 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
4358 Changes in version 0.0.2pre17 - 2003-12-30
4360 - Made --debuglogfile (or any second log file, actually) work.
4361 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
4362 adversary could force us into an infinite loop.
4365 - Each onionskin handshake now includes a hash of the computed key,
4366 to prove the server's identity and help perfect forward secrecy.
4367 - Changed cell size from 256 to 512 bytes (working toward compatibility
4369 - Changed cell length to 2 bytes, and moved it to the relay header.
4370 - Implemented end-to-end integrity checking for the payloads of
4372 - Separated streamid from 'recognized' (otherwise circuits will get
4373 messed up when we try to have streams exit from the middle). We
4374 use the integrity-checking to confirm that a cell is addressed to
4376 - Randomize the initial circid and streamid values, so an adversary who
4377 breaks into a node can't learn how many circuits or streams have
4381 Changes in version 0.0.2pre16 - 2003-12-14
4383 - Fixed a bug that made HUP trigger an assert
4384 - Fixed a bug where a circuit that immediately failed wasn't being
4385 counted as a failed circuit in counting retries.
4388 - Now we close the circuit when we get a truncated cell: otherwise we're
4389 open to an anonymity attack where a bad node in the path truncates
4390 the circuit and then we open streams at him.
4391 - Add port ranges to exit policies
4392 - Add a conservative default exit policy
4393 - Warn if you're running tor as root
4394 - on HUP, retry OR connections and close/rebind listeners
4395 - options.EntryNodes: try these nodes first when picking the first node
4396 - options.ExitNodes: if your best choices happen to include any of
4397 your preferred exit nodes, you choose among just those preferred
4399 - options.ExcludedNodes: nodes that are never picked in path building
4402 Changes in version 0.0.2pre15 - 2003-12-03
4403 o Robustness and bugfixes:
4404 - Sometimes clients would cache incorrect DNS resolves, which would
4405 really screw things up.
4406 - An OP that goes offline would slowly leak all its sockets and stop
4408 - A wide variety of bugfixes in exit node selection, exit policy
4409 handling, and processing pending streams when a new circuit is
4411 - Pick nodes for a path only from those the directory says are up
4412 - Choose randomly from all running dirservers, not always the first one
4413 - Increase allowed http header size for directory fetch.
4414 - Stop writing to stderr (if we're daemonized it will be closed).
4415 - Enable -g always, so cores will be more useful to me.
4416 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
4419 - Wrote a man page. It lists commonly used options.
4422 - Change default loglevel to warn.
4423 - Make PidFile default to null rather than littering in your CWD.
4424 - OnionRouter config option is now obsolete. Instead it just checks
4426 - Moved to a single unified torrc file for both clients and servers.
4429 Changes in version 0.0.2pre14 - 2003-11-29
4430 o Robustness and bugfixes:
4431 - Force the admin to make the DataDirectory himself
4432 - to get ownership/permissions right
4433 - so clients no longer make a DataDirectory and then never use it
4434 - fix bug where a client who was offline for 45 minutes would never
4435 pull down a directory again
4436 - fix (or at least hide really well) the dns assert bug that was
4437 causing server crashes
4438 - warnings and improved robustness wrt clockskew for certs
4439 - use the native daemon(3) to daemonize, when available
4440 - exit if bind() fails
4441 - exit if neither socksport nor orport is defined
4442 - include our own tor_timegm (Win32 doesn't have its own)
4443 - bugfix for win32 with lots of connections
4444 - fix minor bias in PRNG
4445 - make dirserver more robust to corrupt cached directory
4448 - Wrote the design document (woo)
4450 o Circuit building and exit policies:
4451 - Circuits no longer try to use nodes that the directory has told them
4453 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
4454 bitcounts (18.0.0.0/8).
4455 - Make AP connections standby for a circuit if no suitable circuit
4456 exists, rather than failing
4457 - Circuits choose exit node based on addr/port, exit policies, and
4458 which AP connections are standing by
4459 - Bump min pathlen from 2 to 3
4460 - Relay end cells have a payload to describe why the stream ended.
4461 - If the stream failed because of exit policy, try again with a new
4463 - Clients have a dns cache to remember resolved addresses.
4464 - Notice more quickly when we have no working circuits
4467 - APPort is now called SocksPort
4468 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
4470 - RecommendedVersions is now a config variable rather than
4471 hardcoded (for dirservers)
4472 - Reloads config on HUP
4473 - Usage info on -h or --help
4474 - If you set User and Group config vars, it'll setu/gid to them.
4476 Changes in version 0.0.2pre13 - 2003-10-19
4477 o General stability:
4478 - SSL_write no longer fails when it returns WANTWRITE and the number
4479 of bytes in the buf has changed by the next SSL_write call.
4480 - Fix segfault fetching directory when network is down
4481 - Fix a variety of minor memory leaks
4482 - Dirservers reload the fingerprints file on HUP, so I don't have
4483 to take down the network when I approve a new router
4484 - Default server config file has explicit Address line to specify fqdn
4487 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
4488 - Make listener connections not ever alloc bufs
4490 o Autoconf improvements:
4491 - don't clobber an external CFLAGS in ./configure
4492 - Make install now works
4493 - create var/lib/tor on make install
4494 - autocreate a tor.sh initscript to help distribs
4495 - autocreate the torrc and sample-server-torrc with correct paths
4497 o Log files and Daemonizing now work:
4498 - If --DebugLogFile is specified, log to it at -l debug
4499 - If --LogFile is specified, use it instead of commandline
4500 - If --RunAsDaemon is set, tor forks and backgrounds on startup