1 Changes in version 0.2.0.3-alpha - 2007-??-??
3 - Stop allowing address masks that do not correspond to bit prefixes.
4 We have warned about these for a really long time; now it's time
5 to reject them. (Patch from croup.)
8 - Create listener connections before we setuid to the configured User and
9 Group. This way, you can choose port values under 1024, start Tor as
10 root, and have Tor bind those ports before it changes to another UID.
11 - tor-gencert creates all files as readable to the file creator only, and
12 write-protects the authority identity key.
13 - New ConstrainedSockets option to set SO_SNDBUF and SO_RCVBUF on TCP
14 sockets. (Patch from coderman.)
16 o Minor features (directory authority):
17 - Fail quickly and (relatively) harmlessly if we generate a network
18 status document that is somehow malformed.
20 o Minor features (controller):
21 - Add a SOURCE_ADDR field to STREAM NEW events so that controllers can
22 match requests to applications. (Patch from Robert Hogan.)
23 - Report address and port correctly on connections to DNSPort. (Patch
25 - Add a RESOLVE command to launch hostname lookups. (Original patch
27 - Add GETINFO status/enough-dir-info to let controllers tell whether
28 Tor has downloaded sufficient directory information. (Patch from Tup.)
29 - You can now use the ControlSocket option to tell Tor to listen for
30 controller connections on Unix domain sockets on systems that support
31 them. (Patch from Peter Palfrader.)
32 - STREAM NEW events are generated for DNSPort requests and for tunneled
33 directory connections. (Patch from Robert Hogan.)
34 - New GETINFO address-mappings/* command to get address mappings with
35 expiry information. addr-mappings/* is now deprecated.
38 o Minor features (IPv6):
39 - Merge in some (as-yet-unused) IPv6 address manipulation code. (Patch
42 o Performance improvements (win32):
43 - Use Critical Sections rather than Mutexes for synchronizing threads
44 on win32; Mutexes are heavier-weight, and designed for synchronizing
47 o Deprecated features:
48 - RedirectExits is now deprecated.
51 - Directory authorities now call routers Fast if their bandwidth is
52 at least 100KB/s, and consider their bandwidth adequate to be a
53 Guard if it is at least 250KB/s. This fix complements proposal
54 107. [Bugfix on 0.1.2.x]
56 o Major bugfixes (directory):
57 - Fix a crash bug when router descriptors end at a 4096-byte boundary
58 on disk. [Bugfix on 0.1.2.x]
59 - Rewrite directory tokenization code to never run off the end of
60 a string. Fixes bug 455. Patch from croup. [Bugfix on 0.1.2.x]
62 o Minor bugfixes (directory):
63 - Fix another crash bug related to extra-info caching. (Bug found by
64 Peter Palfrader.) [Bugfix on 0.2.0.2-alpha]
65 - Directories no longer return a "304 not modified" when they don't
66 have the networkstatus the client asked for. Also fix a memory
67 leak when returning 304 not modified. [Bugfixes on 0.2.0.2-alpha]
68 - We had accidentally labelled 0.1.2.x directory servers as not
69 suitable for begin_dir requests, and had labelled no directory
70 servers as suitable for uploading extra-info documents. [Bugfix
73 o Minor bugfixes (dns):
74 - Fix a crash when DNSPort is set more than once. (Patch from Robert
75 Hogan.) [Bugfix on 0.2.0.2-alpha]
76 - Add DNSPort connections to the global connection list, so that we
77 can time them out correctly. (Bug found by mwenge) [Bugfix on
81 Changes in version 0.1.2.15 - 2007-07-17
82 o Major bugfixes (compilation):
83 - Fix compile on FreeBSD/NetBSD/OpenBSD. Oops.
85 o Major bugfixes (crashes):
86 - Try even harder not to dereference the first character after
87 an mmap(). Reported by lodger.
88 - Fix a crash bug in directory authorities when we re-number the
89 routerlist while inserting a new router.
90 - When the cached-routers file is an even multiple of the page size,
91 don't run off the end and crash. (Fixes bug 455; based on idea
93 - Fix eventdns.c behavior on Solaris: It is critical to include
94 orconfig.h _before_ sys/types.h, so that we can get the expected
95 definition of _FILE_OFFSET_BITS.
97 o Major bugfixes (security):
98 - Fix a possible buffer overrun when using BSD natd support. Bug
100 - When sending destroy cells from a circuit's origin, don't include
101 the reason for tearing down the circuit. The spec says we didn't,
102 and now we actually don't. Reported by lodger.
103 - Keep streamids from different exits on a circuit separate. This
104 bug may have allowed other routers on a given circuit to inject
105 cells into streams. Reported by lodger; fixes bug 446.
106 - If there's a never-before-connected-to guard node in our list,
107 never choose any guards past it. This way we don't expand our
108 guard list unless we need to.
110 o Minor bugfixes (guard nodes):
111 - Weight guard selection by bandwidth, so that low-bandwidth nodes
112 don't get overused as guards.
114 o Minor bugfixes (directory):
115 - Correctly count the number of authorities that recommend each
116 version. Previously, we were under-counting by 1.
117 - Fix a potential crash bug when we load many server descriptors at
118 once and some of them make others of them obsolete. Fixes bug 458.
120 o Minor bugfixes (hidden services):
121 - Stop tearing down the whole circuit when the user asks for a
122 connection to a port that the hidden service didn't configure.
125 o Minor bugfixes (misc):
126 - On Windows, we were preventing other processes from reading
127 cached-routers while Tor was running. Reported by janbar.
128 - Fix a possible (but very unlikely) bug in picking routers by
129 bandwidth. Add a log message to confirm that it is in fact
130 unlikely. Patch from lodger.
131 - Backport a couple of memory leak fixes.
132 - Backport miscellaneous cosmetic bugfixes.
135 Changes in version 0.2.0.2-alpha - 2007-06-02
136 o Major bugfixes on 0.2.0.1-alpha:
137 - Fix an assertion failure related to servers without extra-info digests.
138 Resolves bugs 441 and 442.
140 o Minor features (directory):
141 - Support "If-Modified-Since" when answering HTTP requests for
142 directories, running-routers documents, and network-status documents.
143 (There's no need to support it for router descriptors, since those
144 are downloaded by descriptor digest.)
146 o Minor build issues:
147 - Clear up some MIPSPro compiler warnings.
148 - When building from a tarball on a machine that happens to have SVK
149 installed, report the micro-revision as whatever version existed
150 in the tarball, not as "x".
153 Changes in version 0.2.0.1-alpha - 2007-06-01
154 o Major features, server usability:
155 - New config options RelayBandwidthRate and RelayBandwidthBurst:
156 a separate set of token buckets for relayed traffic. Right now
157 relayed traffic is defined as answers to directory requests, and
158 OR connections that don't have any local circuits on them.
160 o Major features, client usability:
161 - A client-side DNS proxy feature to replace the need for
162 dns-proxy-tor: Just set "DNSPort 9999", and Tor will now listen
163 for DNS requests on port 9999, use the Tor network to resolve them
164 anonymously, and send the reply back like a regular DNS server.
165 The code still only implements a subset of DNS.
166 - Make PreferTunneledDirConns and TunnelDirConns work even when
167 we have no cached directory info. This means Tor clients can now
168 do all of their connections protected by TLS.
170 o Major features, performance and efficiency:
171 - Directory authorities accept and serve "extra info" documents for
172 routers. These documents contain fields from router descriptors
173 that aren't usually needed, and that use a lot of excess
174 bandwidth. Once these fields are removed from router descriptors,
175 the bandwidth savings should be about 60%. [Partially implements
177 - Servers upload extra-info documents to any authority that accepts
178 them. Authorities (and caches that have been configured to download
179 extra-info documents) download them as needed. [Partially implements
181 - Change the way that Tor buffers data that it is waiting to write.
182 Instead of queueing data cells in an enormous ring buffer for each
183 client->OR or OR->OR connection, we now queue cells on a separate
184 queue for each circuit. This lets us use less slack memory, and
185 will eventually let us be smarter about prioritizing different kinds
187 - Use memory pools to allocate cells with better speed and memory
188 efficiency, especially on platforms where malloc() is inefficient.
189 - Stop reading on edge connections when their corresponding circuit
190 buffers are full; start again as the circuits empty out.
192 o Major features, other:
193 - Add an HSAuthorityRecordStats option that hidden service authorities
194 can use to track statistics of overall hidden service usage without
195 logging information that would be very useful to an attacker.
196 - Start work implementing multi-level keys for directory authorities:
197 Add a standalone tool to generate key certificates. (Proposal 103.)
200 - Directory authorities now call routers Stable if they have an
201 uptime of at least 30 days, even if that's not the median uptime
202 in the network. Implements proposal 107, suggested by Kevin Bauer
205 o Minor fixes (resource management):
206 - Count the number of open sockets separately from the number
207 of active connection_t objects. This will let us avoid underusing
208 our allocated connection limit.
209 - We no longer use socket pairs to link an edge connection to an
210 anonymous directory connection or a DirPort test connection.
211 Instead, we track the link internally and transfer the data
212 in-process. This saves two sockets per "linked" connection (at the
213 client and at the server), and avoids the nasty Windows socketpair()
215 - Keep unused 4k and 16k buffers on free lists, rather than wasting 8k
216 for every single inactive connection_t. Free items from the
217 4k/16k-buffer free lists when they haven't been used for a while.
219 o Minor features (build):
220 - Make autoconf search for libevent, openssl, and zlib consistently.
221 - Update deprecated macros in configure.in.
222 - When warning about missing headers, tell the user to let us
223 know if the compile succeeds anyway, so we can downgrade the
225 - Include the current subversion revision as part of the version
226 string: either fetch it directly if we're in an SVN checkout, do
227 some magic to guess it if we're in an SVK checkout, or use
228 the last-detected version if we're building from a .tar.gz.
229 Use this version consistently in log messages.
231 o Minor features (logging):
232 - Always prepend "Bug: " to any log message about a bug.
233 - Put a platform string (e.g. "Linux i686") in the startup log
234 message, so when people paste just their logs, we know if it's
235 OpenBSD or Windows or what.
236 - When logging memory usage, break down memory used in buffers by
239 o Minor features (directory system):
240 - New config option V2AuthoritativeDirectory that all directory
241 authorities should set. This will let future authorities choose
242 not to serve V2 directory information.
243 - Directory authorities allow multiple router descriptors and/or extra
244 info documents to be uploaded in a single go. This will make
245 implementing proposal 104 simpler.
247 o Minor features (controller):
248 - Add a new config option __DisablePredictedCircuits designed for
249 use by the controller, when we don't want Tor to build any circuits
251 - Let the controller specify HOP=%d as an argument to ATTACHSTREAM,
252 so we can exit from the middle of the circuit.
253 - Implement "getinfo status/circuit-established".
254 - Implement "getinfo status/version/..." so a controller can tell
255 whether the current version is recommended, and whether any versions
256 are good, and how many authorities agree. (Patch from shibz.)
258 o Minor features (hidden services):
259 - Allow multiple HiddenServicePort directives with the same virtual
260 port; when they occur, the user is sent round-robin to one
261 of the target ports chosen at random. Partially fixes bug 393 by
262 adding limited ad-hoc round-robining.
264 o Minor features (other):
266 - Add a new AutomapHostsOnResolve option: when it is enabled, any
267 resolve request for hosts matching a given pattern causes Tor to
268 generate an internal virtual address mapping for that host. This
269 allows DNSPort to work sensibly with hidden service users. By
270 default, .exit and .onion addresses are remapped; the list of
271 patterns can be reconfigured with AutomapHostsSuffixes.
272 - Add an "-F" option to tor-resolve to force a resolve for a .onion
273 address. Thanks to the AutomapHostsOnResolve option, this is no
274 longer a completely silly thing to do.
275 - If Tor is invoked from something that isn't a shell (e.g. Vidalia),
276 now we expand "-f ~/.tor/torrc" correctly. Suggested by Matt Edman.
277 - Treat "2gb" when given in torrc for a bandwidth as meaning 2gb,
278 minus 1 byte: the actual maximum declared bandwidth.
281 - Removed support for the old binary "version 0" controller protocol.
282 This has been deprecated since 0.1.1, and warnings have been issued
283 since 0.1.2. When we encounter a v0 control message, we now send
284 back an error and close the connection.
285 - Remove the old "dns worker" server DNS code: it hasn't been default
286 since 0.1.2.2-alpha, and all the servers seem to be using the new
289 o Minor bugfixes (portability):
290 - Even though Windows is equally happy with / and \ as path separators,
291 try to use \ consistently on Windows and / consistently on Unix: it
292 makes the log messages nicer.
293 - Correctly report platform name on Windows 95 OSR2 and Windows 98 SE.
294 - Read resolv.conf files correctly on platforms where read() returns
295 partial results on small file reads.
297 o Minor bugfixes (directory):
298 - Correctly enforce that elements of directory objects do not appear
299 more often than they are allowed to appear.
300 - When we are reporting the DirServer line we just parsed, we were
301 logging the second stanza of the key fingerprint, not the first.
303 o Minor bugfixes (logging):
304 - When we hit an EOF on a log (probably because we're shutting down),
305 don't try to remove the log from the list: just mark it as
306 unusable. (Bulletproofs against bug 222.)
308 o Minor bugfixes (other):
309 - In the exitlist script, only consider the most recently published
310 server descriptor for each server. Also, when the user requests
311 a list of servers that _reject_ connections to a given address,
312 explicitly exclude the IPs that also have servers that accept
313 connections to that address. (Resolves bug 405.)
314 - Stop allowing hibernating servers to be "stable" or "fast".
315 - On Windows, we were preventing other processes from reading
316 cached-routers while Tor was running. (Reported by janbar)
317 - Make the NodeFamilies config option work. (Reported by
318 lodger -- it has never actually worked, even though we added it
320 - Check return values from pthread_mutex functions.
321 - Don't save non-general-purpose router descriptors to the disk cache,
322 because we have no way of remembering what their purpose was when
324 - Add even more asserts to hunt down bug 417.
325 - Build without verbose warnings even on (not-yet-released) gcc 4.2.
326 - Fix a possible (but very unlikely) bug in picking routers by bandwidth.
327 Add a log message to confirm that it is in fact unlikely.
329 o Minor bugfixes (controller):
330 - Make 'getinfo fingerprint' return a 551 error if we're not a
331 server, so we match what the control spec claims we do. Reported
333 - Fix a typo in an error message when extendcircuit fails that
334 caused us to not follow the \r\n-based delimiter protocol. Reported
337 o Code simplifications and refactoring:
338 - Stop passing around circuit_t and crypt_path_t pointers that are
339 implicit in other procedure arguments.
340 - Drop the old code to choke directory connections when the
341 corresponding OR connections got full: thanks to the cell queue
342 feature, OR conns don't get full any more.
343 - Make dns_resolve() handle attaching connections to circuits
344 properly, so the caller doesn't have to.
345 - Rename wants_to_read and wants_to_write to read/write_blocked_on_bw.
346 - Keep the connection array as a dynamic smartlist_t, rather than as
347 a fixed-sized array. This is important, as the number of connections
348 is becoming increasingly decoupled from the number of sockets.
351 Changes in version 0.1.2.14 - 2007-05-25
352 o Directory authority changes:
353 - Two directory authorities (moria1 and moria2) just moved to new
354 IP addresses. This change will particularly affect those who serve
355 or use hidden services.
357 o Major bugfixes (crashes):
358 - If a directory server runs out of space in the connection table
359 as it's processing a begin_dir request, it will free the exit stream
360 but leave it attached to the circuit, leading to unpredictable
361 behavior. (Reported by seeess, fixes bug 425.)
362 - Fix a bug in dirserv_remove_invalid() that would cause authorities
363 to corrupt memory under some really unlikely scenarios.
364 - Tighten router parsing rules. (Bugs reported by Benedikt Boss.)
365 - Avoid segfaults when reading from mmaped descriptor file. (Reported
368 o Major bugfixes (security):
369 - When choosing an entry guard for a circuit, avoid using guards
370 that are in the same family as the chosen exit -- not just guards
371 that are exactly the chosen exit. (Reported by lodger.)
373 o Major bugfixes (resource management):
374 - If a directory authority is down, skip it when deciding where to get
375 networkstatus objects or descriptors. Otherwise we keep asking
376 every 10 seconds forever. Fixes bug 384.
377 - Count it as a failure if we fetch a valid network-status but we
378 don't want to keep it. Otherwise we'll keep fetching it and keep
379 not wanting to keep it. Fixes part of bug 422.
380 - If all of our dirservers have given us bad or no networkstatuses
381 lately, then stop hammering them once per minute even when we
382 think they're failed. Fixes another part of bug 422.
385 - Actually set the purpose correctly for descriptors inserted with
387 - When we have k non-v2 authorities in our DirServer config,
388 we ignored the last k authorities in the list when updating our
390 - Correctly back-off from requesting router descriptors that we are
391 having a hard time downloading.
392 - Read resolv.conf files correctly on platforms where read() returns
393 partial results on small file reads.
394 - Don't rebuild the entire router store every time we get 32K of
395 routers: rebuild it when the journal gets very large, or when
396 the gaps in the store get very large.
399 - When routers publish SVN revisions in their router descriptors,
400 authorities now include those versions correctly in networkstatus
402 - Warn when using a version of libevent before 1.3b to run a server on
403 OSX or BSD: these versions interact badly with userspace threads.
406 Changes in version 0.1.2.13 - 2007-04-24
408 - Fix a memory leak when we ask for "all" networkstatuses and we
409 get one we don't recognize.
410 - Add more asserts to hunt down bug 417.
411 - Disable kqueue on OS X 10.3 and earlier, to fix bug 371.
414 Changes in version 0.1.2.12-rc - 2007-03-16
416 - Fix an infinite loop introduced in 0.1.2.7-alpha when we serve
417 directory information requested inside Tor connections (i.e. via
418 begin_dir cells). It only triggered when the same connection was
419 serving other data at the same time. Reported by seeess.
422 - When creating a circuit via the controller, send a 'launched'
423 event when we're done, so we follow the spec better.
426 Changes in version 0.1.2.11-rc - 2007-03-15
427 o Minor bugfixes (controller), reported by daejees:
428 - Correct the control spec to match how the code actually responds
429 to 'getinfo addr-mappings/*'.
430 - The control spec described a GUARDS event, but the code
431 implemented a GUARD event. Standardize on GUARD, but let people
435 Changes in version 0.1.2.10-rc - 2007-03-07
436 o Major bugfixes (Windows):
437 - Do not load the NT services library functions (which may not exist)
438 just to detect if we're a service trying to shut down. Now we run
439 on Win98 and friends again.
441 o Minor bugfixes (other):
442 - Clarify a couple of log messages.
443 - Fix a misleading socks5 error number.
446 Changes in version 0.1.2.9-rc - 2007-03-02
447 o Major bugfixes (Windows):
448 - On MinGW, use "%I64u" to printf/scanf 64-bit integers, instead
449 of the usual GCC "%llu". This prevents a bug when saving 64-bit
450 int configuration values: the high-order 32 bits would get
451 truncated. In particular, we were being bitten by the default
452 MaxAdvertisedBandwidth of 128 TB turning into 0. (Fixes bug 400
453 and maybe also bug 397.)
455 o Minor bugfixes (performance):
456 - Use OpenSSL's AES implementation on platforms where it's faster.
457 This could save us as much as 10% CPU usage.
459 o Minor bugfixes (server):
460 - Do not rotate onion key immediately after setting it for the first
463 o Minor bugfixes (directory authorities):
464 - Stop calling servers that have been hibernating for a long time
465 "stable". Also, stop letting hibernating or obsolete servers affect
466 uptime and bandwidth cutoffs.
467 - Stop listing hibernating servers in the v1 directory.
469 o Minor bugfixes (hidden services):
470 - Upload hidden service descriptors slightly less often, to reduce
473 o Minor bugfixes (other):
474 - Fix an assert that could trigger if a controller quickly set then
475 cleared EntryNodes. (Bug found by Udo van den Heuvel.)
476 - On architectures where sizeof(int)>4, still clamp declarable bandwidth
478 - Fix a potential race condition in the rpm installer. Found by
480 - Try to fix eventdns warnings once and for all: do not treat a dns rcode
481 of 2 as indicating that the server is completely bad; it sometimes
482 means that the server is just bad for the request in question. (may fix
483 the last of bug 326.)
484 - Disable encrypted directory connections when we don't have a server
485 descriptor for the destination. We'll get this working again in
489 Changes in version 0.1.2.8-beta - 2007-02-26
490 o Major bugfixes (crashes):
491 - Stop crashing when the controller asks us to resetconf more than
492 one config option at once. (Vidalia 0.0.11 does this.)
493 - Fix a crash that happened on Win98 when we're given command-line
494 arguments: don't try to load NT service functions from advapi32.dll
495 except when we need them. (Bug introduced in 0.1.2.7-alpha;
497 - Fix a longstanding obscure crash bug that could occur when
498 we run out of DNS worker processes. (Resolves bug 390.)
500 o Major bugfixes (hidden services):
501 - Correctly detect whether hidden service descriptor downloads are
502 in-progress. (Suggested by Karsten Loesing; fixes bug 399.)
504 o Major bugfixes (accounting):
505 - When we start during an accounting interval before it's time to wake
506 up, remember to wake up at the correct time. (May fix bug 342.)
508 o Minor bugfixes (controller):
509 - Give the controller END_STREAM_REASON_DESTROY events _before_ we
510 clear the corresponding on_circuit variable, and remember later
511 that we don't need to send a redundant CLOSED event. (Resolves part
513 - Report events where a resolve succeeded or where we got a socks
514 protocol error correctly, rather than calling both of them
516 - Change reported stream target addresses to IP consistently when
517 we finally get the IP from an exit node.
518 - Send log messages to the controller even if they happen to be very
521 o Minor bugfixes (other):
522 - Display correct results when reporting which versions are
523 recommended, and how recommended they are. (Resolves bug 383.)
524 - Improve our estimates for directory bandwidth to be less random:
525 guess that an unrecognized directory will have the average bandwidth
526 from all known directories, not that it will have the average
527 bandwidth from those directories earlier than it on the list.
528 - If we start a server with ClientOnly 1, then set ClientOnly to 0
529 and hup, stop triggering an assert based on an empty onion_key.
530 - On platforms with no working mmap() equivalent, don't warn the
531 user when cached-routers doesn't exist.
532 - Warn the user when mmap() [or its equivalent] fails for some reason
533 other than file-not-found.
534 - Don't warn the user when cached-routers.new doesn't exist: that's
535 perfectly fine when starting up for the first time.
536 - When EntryNodes are configured, rebuild the guard list to contain,
537 in order: the EntryNodes that were guards before; the rest of the
538 EntryNodes; the nodes that were guards before.
539 - Mask out all signals in sub-threads; only the libevent signal
540 handler should be processing them. This should prevent some crashes
541 on some machines using pthreads. (Patch from coderman.)
542 - Fix switched arguments on memset in the implementation of
543 tor_munmap() for systems with no mmap() call.
544 - When Tor receives a router descriptor that it asked for, but
545 no longer wants (because it has received fresh networkstatuses
546 in the meantime), do not warn the user. Cache the descriptor if
547 we're a cache; drop it if we aren't.
548 - Make earlier entry guards _really_ get retried when the network
550 - On a malformed DNS reply, always give an error to the corresponding
552 - Build with recent libevents on platforms that do not define the
553 nonstandard types "u_int8_t" and friends.
555 o Minor features (controller):
556 - Warn the user when an application uses the obsolete binary v0
557 control protocol. We're planning to remove support for it during
558 the next development series, so it's good to give people some
560 - Add STREAM_BW events to report per-entry-stream bandwidth
561 use. (Patch from Robert Hogan.)
562 - Rate-limit SIGNEWNYM signals in response to controllers that
563 impolitely generate them for every single stream. (Patch from
564 mwenge; closes bug 394.)
565 - Make REMAP stream events have a SOURCE (cache or exit), and
566 make them generated in every case where we get a successful
567 connected or resolved cell.
569 o Minor bugfixes (performance):
570 - Call router_have_min_dir_info half as often. (This is showing up in
571 some profiles, but not others.)
572 - When using GCC, make log_debug never get called at all, and its
573 arguments never get evaluated, when no debug logs are configured.
574 (This is showing up in some profiles, but not others.)
577 - Remove some never-implemented options. Mark PathlenCoinWeight as
579 - Implement proposal 106: Stop requiring clients to have well-formed
580 certificates; stop checking nicknames in certificates. (Clients
581 have certificates so that they can look like Tor servers, but in
582 the future we might want to allow them to look like regular TLS
583 clients instead. Nicknames in certificates serve no purpose other
584 than making our protocol easier to recognize on the wire.)
585 - Revise messages on handshake failure again to be even more clear about
586 which are incoming connections and which are outgoing.
587 - Discard any v1 directory info that's over 1 month old (for
588 directories) or over 1 week old (for running-routers lists).
589 - Do not warn when individual nodes in the configuration's EntryNodes,
590 ExitNodes, etc are down: warn only when all possible nodes
591 are down. (Fixes bug 348.)
592 - Always remove expired routers and networkstatus docs before checking
593 whether we have enough information to build circuits. (Fixes
595 - Put a lower-bound on MaxAdvertisedBandwidth.
598 Changes in version 0.1.2.7-alpha - 2007-02-06
599 o Major bugfixes (rate limiting):
600 - Servers decline directory requests much more aggressively when
601 they're low on bandwidth. Otherwise they end up queueing more and
602 more directory responses, which can't be good for latency.
603 - But never refuse directory requests from local addresses.
604 - Fix a memory leak when sending a 503 response for a networkstatus
606 - Be willing to read or write on local connections (e.g. controller
607 connections) even when the global rate limiting buckets are empty.
608 - If our system clock jumps back in time, don't publish a negative
609 uptime in the descriptor. Also, don't let the global rate limiting
610 buckets go absurdly negative.
611 - Flush local controller connection buffers periodically as we're
612 writing to them, so we avoid queueing 4+ megabytes of data before
615 o Major bugfixes (NT services):
616 - Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
617 command-line flag so that admins can override the default by saying
618 "tor --service install --user "SomeUser"". This will not affect
619 existing installed services. Also, warn the user that the service
620 will look for its configuration file in the service user's
621 %appdata% directory. (We can't do the 'hardwire the user's appdata
622 directory' trick any more, since we may not have read access to that
625 o Major bugfixes (other):
626 - Previously, we would cache up to 16 old networkstatus documents
627 indefinitely, if they came from nontrusted authorities. Now we
628 discard them if they are more than 10 days old.
629 - Fix a crash bug in the presence of DNS hijacking (reported by Andrew
631 - Detect and reject malformed DNS responses containing circular
633 - If exits are rare enough that we're not marking exits as guards,
634 ignore exit bandwidth when we're deciding the required bandwidth
636 - When we're handling a directory connection tunneled over Tor,
637 don't fill up internal memory buffers with all the data we want
638 to tunnel; instead, only add it if the OR connection that will
639 eventually receive it has some room for it. (This can lead to
640 slowdowns in tunneled dir connections; a better solution will have
643 o Minor bugfixes (dns):
644 - Add some defensive programming to eventdns.c in an attempt to catch
645 possible memory-stomping bugs.
646 - Detect and reject DNS replies containing IPv4 or IPv6 records with
647 an incorrect number of bytes. (Previously, we would ignore the
649 - Fix as-yet-unused reverse IPv6 lookup code so it sends nybbles
650 in the correct order, and doesn't crash.
651 - Free memory held in recently-completed DNS lookup attempts on exit.
652 This was not a memory leak, but may have been hiding memory leaks.
653 - Handle TTL values correctly on reverse DNS lookups.
654 - Treat failure to parse resolv.conf as an error.
656 o Minor bugfixes (other):
657 - Fix crash with "tor --list-fingerprint" (reported by seeess).
658 - When computing clock skew from directory HTTP headers, consider what
659 time it was when we finished asking for the directory, not what
661 - Expire socks connections if they spend too long waiting for the
662 handshake to finish. Previously we would let them sit around for
663 days, if the connecting application didn't close them either.
664 - And if the socks handshake hasn't started, don't send a
665 "DNS resolve socks failed" handshake reply; just close it.
666 - Stop using C functions that OpenBSD's linker doesn't like.
667 - Don't launch requests for descriptors unless we have networkstatuses
668 from at least half of the authorities. This delays the first
669 download slightly under pathological circumstances, but can prevent
670 us from downloading a bunch of descriptors we don't need.
671 - Do not log IPs with TLS failures for incoming TLS
672 connections. (Fixes bug 382.)
673 - If the user asks to use invalid exit nodes, be willing to use
675 - Stop using the reserved ac_cv namespace in our configure script.
676 - Call stat() slightly less often; use fstat() when possible.
677 - Refactor the way we handle pending circuits when an OR connection
678 completes or fails, in an attempt to fix a rare crash bug.
679 - Only rewrite a conn's address based on X-Forwarded-For: headers
680 if it's a parseable public IP address; and stop adding extra quotes
681 to the resulting address.
684 - Weight directory requests by advertised bandwidth. Now we can
685 let servers enable write limiting but still allow most clients to
686 succeed at their directory requests. (We still ignore weights when
687 choosing a directory authority; I hope this is a feature.)
690 - Create a new file ReleaseNotes which was the old ChangeLog. The
691 new ChangeLog file now includes the summaries for all development
693 - Check for addresses with invalid characters at the exit as well
694 as at the client, and warn less verbosely when they fail. You can
695 override this by setting ServerDNSAllowNonRFC953Addresses to 1.
696 - Adapt a patch from goodell to let the contrib/exitlist script
697 take arguments rather than require direct editing.
698 - Inform the server operator when we decide not to advertise a
699 DirPort due to AccountingMax enabled or a low BandwidthRate. It
700 was confusing Zax, so now we're hopefully more helpful.
701 - Bring us one step closer to being able to establish an encrypted
702 directory tunnel without knowing a descriptor first. Still not
703 ready yet. As part of the change, now assume we can use a
704 create_fast cell if we don't know anything about a router.
705 - Allow exit nodes to use nameservers running on ports other than 53.
706 - Servers now cache reverse DNS replies.
707 - Add an --ignore-missing-torrc command-line option so that we can
708 get the "use sensible defaults if the configuration file doesn't
709 exist" behavior even when specifying a torrc location on the command
712 o Minor features (controller):
713 - Track reasons for OR connection failure; make these reasons
714 available via the controller interface. (Patch from Mike Perry.)
715 - Add a SOCKS_BAD_HOSTNAME client status event so controllers
716 can learn when clients are sending malformed hostnames to Tor.
717 - Clean up documentation for controller status events.
718 - Add a REMAP status to stream events to note that a stream's
719 address has changed because of a cached address or a MapAddress
723 Changes in version 0.1.2.6-alpha - 2007-01-09
725 - Fix an assert error introduced in 0.1.2.5-alpha: if a single TLS
726 connection handles more than 4 gigs in either direction, we crash.
727 - Fix an assert error introduced in 0.1.2.5-alpha: if we're an
728 advertised exit node, somebody might try to exit from us when
729 we're bootstrapping and before we've built our descriptor yet.
730 Refuse the connection rather than crashing.
733 - Warn if we (as a server) find that we've resolved an address that we
734 weren't planning to resolve.
735 - Warn that using select() on any libevent version before 1.1 will be
736 unnecessarily slow (even for select()).
737 - Flush ERR-level controller status events just like we currently
738 flush ERR-level log events, so that a Tor shutdown doesn't prevent
739 the controller from learning about current events.
741 o Minor features (more controller status events):
742 - Implement EXTERNAL_ADDRESS server status event so controllers can
743 learn when our address changes.
744 - Implement BAD_SERVER_DESCRIPTOR server status event so controllers
745 can learn when directories reject our descriptor.
746 - Implement SOCKS_UNKNOWN_PROTOCOL client status event so controllers
747 can learn when a client application is speaking a non-socks protocol
749 - Implement DANGEROUS_SOCKS client status event so controllers
750 can learn when a client application is leaking DNS addresses.
751 - Implement BUG general status event so controllers can learn when
752 Tor is unhappy about its internal invariants.
753 - Implement CLOCK_SKEW general status event so controllers can learn
754 when Tor thinks the system clock is set incorrectly.
755 - Implement GOOD_SERVER_DESCRIPTOR and ACCEPTED_SERVER_DESCRIPTOR
756 server status events so controllers can learn when their descriptors
757 are accepted by a directory.
758 - Implement CHECKING_REACHABILITY and REACHABILITY_{SUCCEEDED|FAILED}
759 server status events so controllers can learn about Tor's progress in
760 deciding whether it's reachable from the outside.
761 - Implement BAD_LIBEVENT general status event so controllers can learn
762 when we have a version/method combination in libevent that needs to
764 - Implement NAMESERVER_STATUS, NAMESERVER_ALL_DOWN, DNS_HIJACKED,
765 and DNS_USELESS server status events so controllers can learn
766 about changes to DNS server status.
768 o Minor features (directory):
769 - Authorities no longer recommend exits as guards if this would shift
770 too much load to the exit nodes.
773 Changes in version 0.1.2.5-alpha - 2007-01-06
775 - Enable write limiting as well as read limiting. Now we sacrifice
776 capacity if we're pushing out lots of directory traffic, rather
777 than overrunning the user's intended bandwidth limits.
778 - Include TLS overhead when counting bandwidth usage; previously, we
779 would count only the bytes sent over TLS, but not the bytes used
781 - Support running the Tor service with a torrc not in the same
782 directory as tor.exe and default to using the torrc located in
783 the %appdata%\Tor\ of the user who installed the service. Patch
785 - Servers now check for the case when common DNS requests are going to
786 wildcarded addresses (i.e. all getting the same answer), and change
787 their exit policy to reject *:* if it's happening.
788 - Implement BEGIN_DIR cells, so we can connect to the directory
789 server via TLS to do encrypted directory requests rather than
790 plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
791 config options if you like.
793 o Minor features (config and docs):
794 - Start using the state file to store bandwidth accounting data:
795 the bw_accounting file is now obsolete. We'll keep generating it
796 for a while for people who are still using 0.1.2.4-alpha.
797 - Try to batch changes to the state file so that we do as few
798 disk writes as possible while still storing important things in
800 - The state file and the bw_accounting file get saved less often when
801 the AvoidDiskWrites config option is set.
802 - Make PIDFile work on Windows (untested).
803 - Add internal descriptions for a bunch of configuration options:
804 accessible via controller interface and in comments in saved
806 - Reject *:563 (NNTPS) in the default exit policy. We already reject
807 NNTP by default, so this seems like a sensible addition.
808 - Clients now reject hostnames with invalid characters. This should
809 avoid some inadvertent info leaks. Add an option
810 AllowNonRFC953Hostnames to disable this behavior, in case somebody
811 is running a private network with hosts called @, !, and #.
812 - Add a maintainer script to tell us which options are missing
813 documentation: "make check-docs".
814 - Add a new address-spec.txt document to describe our special-case
815 addresses: .exit, .onion, and .noconnnect.
817 o Minor features (DNS):
818 - Ongoing work on eventdns infrastructure: now it has dns server
819 and ipv6 support. One day Tor will make use of it.
820 - Add client-side caching for reverse DNS lookups.
821 - Add support to tor-resolve tool for reverse lookups and SOCKS5.
822 - When we change nameservers or IP addresses, reset and re-launch
823 our tests for DNS hijacking.
825 o Minor features (directory):
826 - Authorities now specify server versions in networkstatus. This adds
827 about 2% to the size of compressed networkstatus docs, and allows
828 clients to tell which servers support BEGIN_DIR and which don't.
829 The implementation is forward-compatible with a proposed future
830 protocol version scheme not tied to Tor versions.
831 - DirServer configuration lines now have an orport= option so
832 clients can open encrypted tunnels to the authorities without
833 having downloaded their descriptors yet. Enabled for moria1,
834 moria2, tor26, and lefkada now in the default configuration.
835 - Directory servers are more willing to send a 503 "busy" if they
836 are near their write limit, especially for v1 directory requests.
837 Now they can use their limited bandwidth for actual Tor traffic.
838 - Clients track responses with status 503 from dirservers. After a
839 dirserver has given us a 503, we try not to use it until an hour has
840 gone by, or until we have no dirservers that haven't given us a 503.
841 - When we get a 503 from a directory, and we're not a server, we don't
842 count the failure against the total number of failures allowed
843 for the thing we're trying to download.
844 - Report X-Your-Address-Is correctly from tunneled directory
845 connections; don't report X-Your-Address-Is when it's an internal
846 address; and never believe reported remote addresses when they're
848 - Protect against an unlikely DoS attack on directory servers.
849 - Add a BadDirectory flag to network status docs so that authorities
850 can (eventually) tell clients about caches they believe to be
853 o Minor features (controller):
854 - Have GETINFO dir/status/* work on hosts with DirPort disabled.
855 - Reimplement GETINFO so that info/names stays in sync with the
857 - Implement "GETINFO fingerprint".
858 - Implement "SETEVENTS GUARD" so controllers can get updates on
859 entry guard status as it changes.
861 o Minor features (clean up obsolete pieces):
862 - Remove some options that have been deprecated since at least
863 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
864 SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
866 - We no longer look for identity and onion keys in "identity.key" and
867 "onion.key" -- these were replaced by secret_id_key and
868 secret_onion_key in 0.0.8pre1.
869 - We no longer require unrecognized directory entries to be
872 o Major bugfixes (security):
873 - Stop sending the HttpProxyAuthenticator string to directory
874 servers when directory connections are tunnelled through Tor.
875 - Clients no longer store bandwidth history in the state file.
876 - Do not log introduction points for hidden services if SafeLogging
878 - When generating bandwidth history, round down to the nearest
879 1k. When storing accounting data, round up to the nearest 1k.
880 - When we're running as a server, remember when we last rotated onion
881 keys, so that we will rotate keys once they're a week old even if
882 we never stay up for a week ourselves.
884 o Major bugfixes (other):
885 - Fix a longstanding bug in eventdns that prevented the count of
886 timed-out resolves from ever being reset. This bug caused us to
887 give up on a nameserver the third time it timed out, and try it
888 10 seconds later... and to give up on it every time it timed out
890 - Take out the '5 second' timeout from the connection retry
891 schedule. Now the first connect attempt will wait a full 10
892 seconds before switching to a new circuit. Perhaps this will help
893 a lot. Based on observations from Mike Perry.
894 - Fix a bug on the Windows implementation of tor_mmap_file() that
895 would prevent the cached-routers file from ever loading. Reported
899 - Fix an assert failure when a directory authority sets
900 AuthDirRejectUnlisted and then receives a descriptor from an
901 unlisted router. Reported by seeess.
902 - Avoid a double-free when parsing malformed DirServer lines.
903 - Fix a bug when a BSD-style PF socket is first used. Patch from
905 - Fix a bug in 0.1.2.2-alpha that prevented clients from asking
906 to resolve an address at a given exit node even when they ask for
908 - Servers no longer ever list themselves in their "family" line,
909 even if configured to do so. This makes it easier to configure
910 family lists conveniently.
911 - When running as a server, don't fall back to 127.0.0.1 when no
912 nameservers are configured in /etc/resolv.conf; instead, make the
913 user fix resolv.conf or specify nameservers explicitly. (Resolves
915 - Stop accepting certain malformed ports in configured exit policies.
916 - Don't re-write the fingerprint file every restart, unless it has
918 - Stop warning when a single nameserver fails: only warn when _all_ of
919 our nameservers have failed. Also, when we only have one nameserver,
920 raise the threshold for deciding that the nameserver is dead.
921 - Directory authorities now only decide that routers are reachable
922 if their identity keys are as expected.
923 - When the user uses bad syntax in the Log config line, stop
924 suggesting other bad syntax as a replacement.
925 - Correctly detect ipv6 DNS capability on OpenBSD.
927 o Minor bugfixes (controller):
928 - Report the circuit number correctly in STREAM CLOSED events. Bug
929 reported by Mike Perry.
930 - Do not report bizarre values for results of accounting GETINFOs
931 when the last second's write or read exceeds the allotted bandwidth.
932 - Report "unrecognized key" rather than an empty string when the
933 controller tries to fetch a networkstatus that doesn't exist.
936 Changes in version 0.1.1.26 - 2006-12-14
938 - Stop sending the HttpProxyAuthenticator string to directory
939 servers when directory connections are tunnelled through Tor.
940 - Clients no longer store bandwidth history in the state file.
941 - Do not log introduction points for hidden services if SafeLogging
945 - Fix an assert failure when a directory authority sets
946 AuthDirRejectUnlisted and then receives a descriptor from an
947 unlisted router (reported by seeess).
950 Changes in version 0.1.2.4-alpha - 2006-12-03
952 - Add support for using natd; this allows FreeBSDs earlier than
953 5.1.2 to have ipfw send connections through Tor without using
954 SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
957 - Make all connections to addresses of the form ".noconnect"
958 immediately get closed. This lets application/controller combos
959 successfully test whether they're talking to the same Tor by
960 watching for STREAM events.
961 - Make cross.sh cross-compilation script work even when autogen.sh
962 hasn't been run. (Patch from Michael Mohr.)
963 - Statistics dumped by -USR2 now include a breakdown of public key
964 operations, for profiling.
967 - Fix a major leak when directory authorities parse their
968 approved-routers list, a minor memory leak when we fail to pick
969 an exit node, and a few rare leaks on errors.
970 - Handle TransPort connections even when the server sends data before
971 the client sends data. Previously, the connection would just hang
972 until the client sent data. (Patch from tup based on patch from
974 - Avoid assert failure when our cached-routers file is empty on
978 - Don't log spurious warnings when we see a circuit close reason we
979 don't recognize; it's probably just from a newer version of Tor.
980 - Have directory authorities allow larger amounts of drift in uptime
981 without replacing the server descriptor: previously, a server that
982 restarted every 30 minutes could have 48 "interesting" descriptors
984 - Start linking to the Tor specification and Tor reference manual
985 correctly in the Windows installer.
986 - Add Vidalia to the OS X uninstaller script, so when we uninstall
987 Tor/Privoxy we also uninstall Vidalia.
988 - Resume building on Irix64, and fix a lot of warnings from its
990 - Don't corrupt last_guessed_ip in router_new_address_suggestion()
991 when we're running as a client.
994 Changes in version 0.1.1.25 - 2006-11-04
996 - When a client asks us to resolve (rather than connect to)
997 an address, and we have a cached answer, give them the cached
998 answer. Previously, we would give them no answer at all.
999 - We were building exactly the wrong circuits when we predict
1000 hidden service requirements, meaning Tor would have to build all
1001 its circuits on demand.
1002 - If none of our live entry guards have a high uptime, but we
1003 require a guard with a high uptime, try adding a new guard before
1004 we give up on the requirement. This patch should make long-lived
1005 connections more stable on average.
1006 - When testing reachability of our DirPort, don't launch new
1007 tests when there's already one in progress -- unreachable
1008 servers were stacking up dozens of testing streams.
1010 o Security bugfixes:
1011 - When the user sends a NEWNYM signal, clear the client-side DNS
1012 cache too. Otherwise we continue to act on previous information.
1015 - Avoid a memory corruption bug when creating a hash table for
1017 - Avoid possibility of controller-triggered crash when misusing
1018 certain commands from a v0 controller on platforms that do not
1019 handle printf("%s",NULL) gracefully.
1020 - Avoid infinite loop on unexpected controller input.
1021 - Don't log spurious warnings when we see a circuit close reason we
1022 don't recognize; it's probably just from a newer version of Tor.
1023 - Add Vidalia to the OS X uninstaller script, so when we uninstall
1024 Tor/Privoxy we also uninstall Vidalia.
1027 Changes in version 0.1.2.3-alpha - 2006-10-29
1029 - Prepare for servers to publish descriptors less often: never
1030 discard a descriptor simply for being too old until either it is
1031 recommended by no authorities, or until we get a better one for
1032 the same router. Make caches consider retaining old recommended
1033 routers for even longer.
1034 - If most authorities set a BadExit flag for a server, clients
1035 don't think of it as a general-purpose exit. Clients only consider
1036 authorities that advertise themselves as listing bad exits.
1037 - Directory servers now provide 'Pragma: no-cache' and 'Expires'
1038 headers for content, so that we can work better in the presence of
1039 caching HTTP proxies.
1040 - Allow authorities to list nodes as bad exits by fingerprint or by
1043 o Minor features, controller:
1044 - Add a REASON field to CIRC events; for backward compatibility, this
1045 field is sent only to controllers that have enabled the extended
1046 event format. Also, add additional reason codes to explain why
1047 a given circuit has been destroyed or truncated. (Patches from
1049 - Add a REMOTE_REASON field to extended CIRC events to tell the
1050 controller about why a remote OR told us to close a circuit.
1051 - Stream events also now have REASON and REMOTE_REASON fields,
1052 working much like those for circuit events.
1053 - There's now a GETINFO ns/... field so that controllers can ask Tor
1054 about the current status of a router.
1055 - A new event type "NS" to inform a controller when our opinion of
1056 a router's status has changed.
1057 - Add a GETINFO events/names and GETINFO features/names so controllers
1058 can tell which events and features are supported.
1059 - A new CLEARDNSCACHE signal to allow controllers to clear the
1060 client-side DNS cache without expiring circuits.
1062 o Security bugfixes:
1063 - When the user sends a NEWNYM signal, clear the client-side DNS
1064 cache too. Otherwise we continue to act on previous information.
1067 - Avoid sending junk to controllers or segfaulting when a controller
1068 uses EVENT_NEW_DESC with verbose nicknames.
1069 - Stop triggering asserts if the controller tries to extend hidden
1070 service circuits (reported by mwenge).
1071 - Avoid infinite loop on unexpected controller input.
1072 - When the controller does a "GETINFO network-status", tell it
1073 about even those routers whose descriptors are very old, and use
1074 long nicknames where appropriate.
1075 - Change NT service functions to be loaded on demand. This lets us
1076 build with MinGW without breaking Tor for Windows 98 users.
1077 - Do DirPort reachability tests less often, since a single test
1078 chews through many circuits before giving up.
1079 - In the hidden service example in torrc.sample, stop recommending
1080 esoteric and discouraged hidden service options.
1081 - When stopping an NT service, wait up to 10 sec for it to actually
1082 stop. (Patch from Matt Edman; resolves bug 295.)
1083 - Fix handling of verbose nicknames with ORCONN controller events:
1084 make them show up exactly when requested, rather than exactly when
1086 - When reporting verbose nicknames in entry_guards_getinfo(), avoid
1087 printing a duplicate "$" in the keys we send (reported by mwenge).
1088 - Correctly set maximum connection limit on Cygwin. (This time
1090 - Try to detect Windows correctly when cross-compiling.
1091 - Detect the size of the routers file correctly even if it is
1092 corrupted (on systems without mmap) or not page-aligned (on systems
1093 with mmap). This bug was harmless.
1094 - Sometimes we didn't bother sending a RELAY_END cell when an attempt
1095 to open a stream fails; now we do in more cases. This should
1096 make clients able to find a good exit faster in some cases, since
1097 unhandleable requests will now get an error rather than timing out.
1098 - Resolve two memory leaks when rebuilding the on-disk router cache
1099 (reported by fookoowa).
1100 - Clean up minor code warnings suggested by the MIPSpro C compiler,
1101 and reported by some Centos users.
1102 - Controller signals now work on non-Unix platforms that don't define
1103 SIGUSR1 and SIGUSR2 the way we expect.
1104 - Patch from Michael Mohr to contrib/cross.sh, so it checks more
1105 values before failing, and always enables eventdns.
1106 - Libevent-1.2 exports, but does not define in its headers, strlcpy.
1107 Try to fix this in configure.in by checking for most functions
1108 before we check for libevent.
1111 Changes in version 0.1.2.2-alpha - 2006-10-07
1113 - Make our async eventdns library on-by-default for Tor servers,
1114 and plan to deprecate the separate dnsworker threads.
1115 - Add server-side support for "reverse" DNS lookups (using PTR
1116 records so clients can determine the canonical hostname for a given
1117 IPv4 address). Only supported by servers using eventdns; servers
1118 now announce in their descriptors whether they support eventdns.
1119 - Specify and implement client-side SOCKS5 interface for reverse DNS
1120 lookups (see doc/socks-extensions.txt).
1121 - Add a BEGIN_DIR relay cell type for an easier in-protocol way to
1122 connect to directory servers through Tor. Previously, clients needed
1123 to find Tor exits to make private connections to directory servers.
1124 - Avoid choosing Exit nodes for entry or middle hops when the
1125 total bandwidth available from non-Exit nodes is much higher than
1126 the total bandwidth available from Exit nodes.
1127 - Workaround for name servers (like Earthlink's) that hijack failing
1128 DNS requests and replace the no-such-server answer with a "helpful"
1129 redirect to an advertising-driven search portal. Also work around
1130 DNS hijackers who "helpfully" decline to hijack known-invalid
1131 RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
1132 lets you turn it off.
1133 - Send out a burst of long-range padding cells once we've established
1134 that we're reachable. Spread them over 4 circuits, so hopefully
1135 a few will be fast. This exercises our bandwidth and bootstraps
1136 us into the directory more quickly.
1138 o New/improved config options:
1139 - Add new config option "ResolvConf" to let the server operator
1140 choose an alternate resolve.conf file when using eventdns.
1141 - Add an "EnforceDistinctSubnets" option to control our "exclude
1142 servers on the same /16" behavior. It's still on by default; this
1143 is mostly for people who want to operate private test networks with
1144 all the machines on the same subnet.
1145 - If one of our entry guards is on the ExcludeNodes list, or the
1146 directory authorities don't think it's a good guard, treat it as
1147 if it were unlisted: stop using it as a guard, and throw it off
1148 the guards list if it stays that way for a long time.
1149 - Allow directory authorities to be marked separately as authorities
1150 for the v1 directory protocol, the v2 directory protocol, and
1151 as hidden service directories, to make it easier to retire old
1152 authorities. V1 authorities should set "HSAuthoritativeDir 1"
1153 to continue being hidden service authorities too.
1154 - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
1156 o Minor features, controller:
1157 - Fix CIRC controller events so that controllers can learn the
1158 identity digests of non-Named servers used in circuit paths.
1159 - Let controllers ask for more useful identifiers for servers. Instead
1160 of learning identity digests for un-Named servers and nicknames
1161 for Named servers, the new identifiers include digest, nickname,
1162 and indication of Named status. Off by default; see control-spec.txt
1163 for more information.
1164 - Add a "getinfo address" controller command so it can display Tor's
1165 best guess to the user.
1166 - New controller event to alert the controller when our server
1167 descriptor has changed.
1168 - Give more meaningful errors on controller authentication failure.
1170 o Minor features, other:
1171 - When asked to resolve a hostname, don't use non-exit servers unless
1172 requested to do so. This allows servers with broken DNS to be
1173 useful to the network.
1174 - Divide eventdns log messages into warn and info messages.
1175 - Reserve the nickname "Unnamed" for routers that can't pick
1176 a hostname: any router can call itself Unnamed; directory
1177 authorities will never allocate Unnamed to any particular router;
1178 clients won't believe that any router is the canonical Unnamed.
1179 - Only include function names in log messages for info/debug messages.
1180 For notice/warn/err, the content of the message should be clear on
1181 its own, and printing the function name only confuses users.
1182 - Avoid some false positives during reachability testing: don't try
1183 to test via a server that's on the same /24 as us.
1184 - If we fail to build a circuit to an intended enclave, and it's
1185 not mandatory that we use that enclave, stop wanting it.
1186 - When eventdns is enabled, allow multithreaded builds on NetBSD and
1187 OpenBSD. (We had previously disabled threads on these platforms
1188 because they didn't have working thread-safe resolver functions.)
1190 o Major bugfixes, anonymity/security:
1191 - If a client asked for a server by name, and there's a named server
1192 in our network-status but we don't have its descriptor yet, we
1193 could return an unnamed server instead.
1194 - Fix NetBSD bug that could allow someone to force uninitialized RAM
1195 to be sent to a server's DNS resolver. This only affects NetBSD
1196 and other platforms that do not bounds-check tolower().
1197 - Reject (most) attempts to use Tor circuits with length one. (If
1198 many people start using Tor as a one-hop proxy, exit nodes become
1199 a more attractive target for compromise.)
1200 - Just because your DirPort is open doesn't mean people should be
1201 able to remotely teach you about hidden service descriptors. Now
1202 only accept rendezvous posts if you've got HSAuthoritativeDir set.
1204 o Major bugfixes, other:
1205 - Don't crash on race condition in dns.c: tor_assert(!resolve->expire)
1206 - When a client asks the server to resolve (not connect to)
1207 an address, and it has a cached answer, give them the cached answer.
1208 Previously, the server would give them no answer at all.
1209 - Allow really slow clients to not hang up five minutes into their
1210 directory downloads (suggested by Adam J. Richter).
1211 - We were building exactly the wrong circuits when we anticipated
1212 hidden service requirements, meaning Tor would have to build all
1213 its circuits on demand.
1214 - Avoid crashing when we mmap a router cache file of size 0.
1215 - When testing reachability of our DirPort, don't launch new
1216 tests when there's already one in progress -- unreachable
1217 servers were stacking up dozens of testing streams.
1219 o Minor bugfixes, correctness:
1220 - If we're a directory mirror and we ask for "all" network status
1221 documents, we would discard status documents from authorities
1223 - Avoid a memory corruption bug when creating a hash table for
1225 - Avoid controller-triggered crash when misusing certain commands
1226 from a v0 controller on platforms that do not handle
1227 printf("%s",NULL) gracefully.
1228 - Don't crash when a controller sends a third argument to an
1229 "extendcircuit" request.
1230 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
1231 response; fix error code when "getinfo dir/status/" fails.
1232 - Avoid crash when telling controller stream-status and a stream
1234 - Patch from Adam Langley to fix assert() in eventdns.c.
1235 - Fix a debug log message in eventdns to say "X resolved to Y"
1236 instead of "X resolved to X".
1237 - Make eventdns give strings for DNS errors, not just error numbers.
1238 - Track unreachable entry guards correctly: don't conflate
1239 'unreachable by us right now' with 'listed as down by the directory
1240 authorities'. With the old code, if a guard was unreachable by
1241 us but listed as running, it would clog our guard list forever.
1242 - Behave correctly in case we ever have a network with more than
1243 2GB/s total advertised capacity.
1244 - Make TrackExitHosts case-insensitive, and fix the behavior of
1245 ".suffix" TrackExitHosts items to avoid matching in the middle of
1247 - Finally fix the openssl warnings from newer gccs that believe that
1248 ignoring a return value is okay, but casting a return value and
1249 then ignoring it is a sign of madness.
1250 - Prevent the contrib/exitlist script from printing the same
1251 result more than once.
1252 - Patch from Steve Hildrey: Generate network status correctly on
1253 non-versioning dirservers.
1254 - Don't listen to the X-Your-Address-Is hint if you did the lookup
1255 via Tor; otherwise you'll think you're the exit node's IP address.
1257 o Minor bugfixes, performance:
1258 - Two small performance improvements on parsing descriptors.
1259 - Major performance improvement on inserting descriptors: change
1260 algorithm from O(n^2) to O(n).
1261 - Make the common memory allocation path faster on machines where
1262 malloc(0) returns a pointer.
1263 - Start remembering X-Your-Address-Is directory hints even if you're
1264 a client, so you can become a server more smoothly.
1265 - Avoid duplicate entries on MyFamily line in server descriptor.
1267 o Packaging, features:
1268 - Remove architecture from OS X builds. The official builds are
1269 now universal binaries.
1270 - The Debian package now uses --verify-config when (re)starting,
1271 to distinguish configuration errors from other errors.
1272 - Update RPMs to require libevent 1.1b.
1274 o Packaging, bugfixes:
1275 - Patches so Tor builds with MinGW on Windows.
1276 - Patches so Tor might run on Cygwin again.
1277 - Resume building on non-gcc compilers and ancient gcc. Resume
1278 building with the -O0 compile flag. Resume building cleanly on
1280 - Run correctly on OS X platforms with case-sensitive filesystems.
1281 - Correct includes for net/if.h and net/pfvar.h on OpenBSD (from Tup).
1282 - Add autoconf checks so Tor can build on Solaris x86 again.
1285 - Documented (and renamed) ServerDNSSearchDomains and
1286 ServerDNSResolvConfFile options.
1287 - Be clearer that the *ListenAddress directives can be repeated
1291 Changes in version 0.1.1.24 - 2006-09-29
1293 - Allow really slow clients to not hang up five minutes into their
1294 directory downloads (suggested by Adam J. Richter).
1295 - Fix major performance regression from 0.1.0.x: instead of checking
1296 whether we have enough directory information every time we want to
1297 do something, only check when the directory information has changed.
1298 This should improve client CPU usage by 25-50%.
1299 - Don't crash if, after a server has been running for a while,
1300 it can't resolve its hostname.
1303 - Allow Tor to start when RunAsDaemon is set but no logs are set.
1304 - Don't crash when the controller receives a third argument to an
1305 "extendcircuit" request.
1306 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
1307 response; fix error code when "getinfo dir/status/" fails.
1308 - Fix configure.in to not produce broken configure files with
1309 more recent versions of autoconf. Thanks to Clint for his auto*
1311 - Fix security bug on NetBSD that could allow someone to force
1312 uninitialized RAM to be sent to a server's DNS resolver. This
1313 only affects NetBSD and other platforms that do not bounds-check
1315 - Warn user when using libevent 1.1a or earlier with win32 or kqueue
1316 methods: these are known to be buggy.
1317 - If we're a directory mirror and we ask for "all" network status
1318 documents, we would discard status documents from authorities
1322 Changes in version 0.1.2.1-alpha - 2006-08-27
1324 - Add "eventdns" async dns library from Adam Langley, tweaked to
1325 build on OSX and Windows. Only enabled if you pass the
1326 --enable-eventdns argument to configure.
1327 - Allow servers with no hostname or IP address to learn their
1328 IP address by asking the directory authorities. This code only
1329 kicks in when you would normally have exited with a "no address"
1330 error. Nothing's authenticated, so use with care.
1331 - Rather than waiting a fixed amount of time between retrying
1332 application connections, we wait only 5 seconds for the first,
1333 10 seconds for the second, and 15 seconds for each retry after
1334 that. Hopefully this will improve the expected user experience.
1335 - Patch from Tup to add support for transparent AP connections:
1336 this basically bundles the functionality of trans-proxy-tor
1337 into the Tor mainline. Now hosts with compliant pf/netfilter
1338 implementations can redirect TCP connections straight to Tor
1339 without diverting through SOCKS. Needs docs.
1340 - Busy directory servers save lots of memory by spooling server
1341 descriptors, v1 directories, and v2 networkstatus docs to buffers
1342 as needed rather than en masse. Also mmap the cached-routers
1343 files, so we don't need to keep the whole thing in memory too.
1344 - Automatically avoid picking more than one node from the same
1345 /16 network when constructing a circuit.
1346 - Revise and clean up the torrc.sample that we ship with; add
1347 a section for BandwidthRate and BandwidthBurst.
1350 - Split circuit_t into origin_circuit_t and or_circuit_t, and
1351 split connection_t into edge, or, dir, control, and base structs.
1352 These will save quite a bit of memory on busy servers, and they'll
1353 also help us track down bugs in the code and bugs in the spec.
1354 - Experimentally re-enable kqueue on OSX when using libevent 1.1b
1355 or later. Log when we are doing this, so we can diagnose it when
1356 it fails. (Also, recommend libevent 1.1b for kqueue and
1357 win32 methods; deprecate libevent 1.0b harder; make libevent
1358 recommendation system saner.)
1359 - Start being able to build universal binaries on OS X (thanks
1361 - Export the default exit policy via the control port, so controllers
1362 don't need to guess what it is / will be later.
1363 - Add a man page entry for ProtocolWarnings.
1364 - Add TestVia config option to the man page.
1365 - Remove even more protocol-related warnings from Tor server logs,
1366 such as bad TLS handshakes and malformed begin cells.
1367 - Stop fetching descriptors if you're not a dir mirror and you
1368 haven't tried to establish any circuits lately. [This currently
1369 causes some dangerous behavior, because when you start up again
1370 you'll use your ancient server descriptors.]
1371 - New DirPort behavior: if you have your dirport set, you download
1372 descriptors aggressively like a directory mirror, whether or not
1374 - Get rid of the router_retry_connections notion. Now routers
1375 no longer try to rebuild long-term connections to directory
1376 authorities, and directory authorities no longer try to rebuild
1377 long-term connections to all servers. We still don't hang up
1378 connections in these two cases though -- we need to look at it
1379 more carefully to avoid flapping, and we likely need to wait til
1380 0.1.1.x is obsolete.
1381 - Drop compatibility with obsolete Tors that permit create cells
1382 to have the wrong circ_id_type.
1383 - Re-enable per-connection rate limiting. Get rid of the "OP
1384 bandwidth" concept. Lay groundwork for "bandwidth classes" --
1385 separate global buckets that apply depending on what sort of conn
1387 - Start publishing one minute or so after we find our ORPort
1388 to be reachable. This will help reduce the number of descriptors
1389 we have for ourselves floating around, since it's quite likely
1390 other things (e.g. DirPort) will change during that minute too.
1391 - Fork the v1 directory protocol into its own spec document,
1392 and mark dir-spec.txt as the currently correct (v2) spec.
1395 - When we find our DirPort to be reachable, publish a new descriptor
1396 so we'll tell the world (reported by pnx).
1397 - Publish a new descriptor after we hup/reload. This is important
1398 if our config has changed such that we'll want to start advertising
1399 our DirPort now, etc.
1400 - Allow Tor to start when RunAsDaemon is set but no logs are set.
1401 - When we have a state file we cannot parse, tell the user and
1402 move it aside. Now we avoid situations where the user starts
1403 Tor in 1904, Tor writes a state file with that timestamp in it,
1404 the user fixes her clock, and Tor refuses to start.
1405 - Fix configure.in to not produce broken configure files with
1406 more recent versions of autoconf. Thanks to Clint for his auto*
1408 - "tor --verify-config" now exits with -1(255) or 0 depending on
1409 whether the config options are bad or good.
1410 - Resolve bug 321 when using dnsworkers: append a period to every
1411 address we resolve at the exit node, so that we do not accidentally
1412 pick up local addresses, and so that failing searches are retried
1413 in the resolver search domains. (This is already solved for
1414 eventdns.) (This breaks Blossom servers for now.)
1415 - If we are using an exit enclave and we can't connect, e.g. because
1416 its webserver is misconfigured to not listen on localhost, then
1417 back off and try connecting from somewhere else before we fail.
1420 - Start compiling on MinGW on Windows (patches from Mike Chiussi).
1421 - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
1422 - Fix bug 314: Tor clients issued "unsafe socks" warnings even
1423 when the IP address is mapped through MapAddress to a hostname.
1424 - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
1425 useless IPv6 DNS resolves.
1426 - Patch suggested by Karsten Loesing: respond to SIGNAL command
1427 before we execute the signal, in case the signal shuts us down.
1428 - Clean up AllowInvalidNodes man page entry.
1429 - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
1430 - Add more asserts to track down an assert error on a windows Tor
1431 server with connection_add being called with socket == -1.
1432 - Handle reporting OR_CONN_EVENT_NEW events to the controller.
1433 - Fix misleading log messages: an entry guard that is "unlisted",
1434 as well as not known to be "down" (because we've never heard
1435 of it), is not therefore "up".
1436 - Remove code to special-case "-cvs" ending, since it has not
1437 actually mattered since 0.0.9.
1438 - Make our socks5 handling more robust to broken socks clients:
1439 throw out everything waiting on the buffer in between socks
1440 handshake phases, since they can't possibly (so the theory
1441 goes) have predicted what we plan to respond to them.
1444 Changes in version 0.1.1.23 - 2006-07-30
1446 - Fast Tor servers, especially exit nodes, were triggering asserts
1447 due to a bug in handling the list of pending DNS resolves. Some
1448 bugs still remain here; we're hunting them.
1449 - Entry guards could crash clients by sending unexpected input.
1450 - More fixes on reachability testing: if you find yourself reachable,
1451 then don't ever make any client requests (so you stop predicting
1452 circuits), then hup or have your clock jump, then later your IP
1453 changes, you won't think circuits are working, so you won't try to
1454 test reachability, so you won't publish.
1457 - Avoid a crash if the controller does a resetconf firewallports
1458 and then a setconf fascistfirewall=1.
1459 - Avoid an integer underflow when the dir authority decides whether
1460 a router is stable: we might wrongly label it stable, and compute
1461 a slightly wrong median stability, when a descriptor is published
1463 - Fix a place where we might trigger an assert if we can't build our
1464 own server descriptor yet.
1467 Changes in version 0.1.1.22 - 2006-07-05
1469 - Fix a big bug that was causing servers to not find themselves
1470 reachable if they changed IP addresses. Since only 0.1.1.22+
1471 servers can do reachability testing correctly, now we automatically
1472 make sure to test via one of these.
1473 - Fix to allow clients and mirrors to learn directory info from
1474 descriptor downloads that get cut off partway through.
1475 - Directory authorities had a bug in deciding if a newly published
1476 descriptor was novel enough to make everybody want a copy -- a few
1477 servers seem to be publishing new descriptors many times a minute.
1479 - Fix a rare bug that was causing some servers to complain about
1480 "closing wedged cpuworkers" and skip some circuit create requests.
1481 - Make the Exit flag in directory status documents actually work.
1484 Changes in version 0.1.1.21 - 2006-06-10
1485 o Crash and assert fixes from 0.1.1.20:
1486 - Fix a rare crash on Tor servers that have enabled hibernation.
1487 - Fix a seg fault on startup for Tor networks that use only one
1488 directory authority.
1489 - Fix an assert from a race condition that occurs on Tor servers
1490 while exiting, where various threads are trying to log that they're
1491 exiting, and delete the logs, at the same time.
1492 - Make our unit tests pass again on certain obscure platforms.
1495 - Add support for building SUSE RPM packages.
1496 - Speed up initial bootstrapping for clients: if we are making our
1497 first ever connection to any entry guard, then don't mark it down
1499 - When only one Tor server in the network is labelled as a guard,
1500 and we've already picked him, we would cycle endlessly picking him
1501 again, being unhappy about it, etc. Now we specifically exclude
1502 current guards when picking a new guard.
1503 - Servers send create cells more reliably after the TLS connection
1504 is established: we were sometimes forgetting to send half of them
1505 when we had more than one pending.
1506 - If we get a create cell that asks us to extend somewhere, but the
1507 Tor server there doesn't match the expected digest, we now send
1508 a destroy cell back, rather than silently doing nothing.
1509 - Make options->RedirectExit work again.
1510 - Make cookie authentication for the controller work again.
1511 - Stop being picky about unusual characters in the arguments to
1512 mapaddress. It's none of our business.
1513 - Add a new config option "TestVia" that lets you specify preferred
1514 middle hops to use for test circuits. Perhaps this will let me
1515 debug the reachability problems better.
1517 o Log / documentation fixes:
1518 - If we're a server and some peer has a broken TLS certificate, don't
1519 log about it unless ProtocolWarnings is set, i.e., we want to hear
1520 about protocol violations by others.
1521 - Fix spelling of VirtualAddrNetwork in man page.
1522 - Add a better explanation at the top of the autogenerated torrc file
1523 about what happened to our old torrc.
1526 Changes in version 0.1.1.20 - 2006-05-23
1528 - Downgrade a log severity where servers complain that they're
1530 - Avoid a compile warning on FreeBSD.
1531 - Remove string size limit on NEWDESC messages; solve bug 291.
1532 - Correct the RunAsDaemon entry in the man page; ignore RunAsDaemon
1533 more thoroughly when we're running on windows.
1536 Changes in version 0.1.1.19-rc - 2006-05-03
1538 - Regenerate our local descriptor if it's dirty and we try to use
1539 it locally (e.g. if it changes during reachability detection).
1540 - If we setconf our ORPort to 0, we continued to listen on the
1541 old ORPort and receive connections.
1542 - Avoid a second warning about machine/limits.h on Debian
1544 - Be willing to add our own routerinfo into the routerlist.
1545 Now authorities will include themselves in their directories
1546 and network-statuses.
1547 - Stop trying to upload rendezvous descriptors to every
1548 directory authority: only try the v1 authorities.
1549 - Servers no longer complain when they think they're not
1550 registered with the directory authorities. There were too many
1552 - Backport dist-rpm changes so rpms can be built without errors.
1555 - Implement an option, VirtualAddrMask, to set which addresses
1556 get handed out in response to mapaddress requests. This works
1557 around a bug in tsocks where 127.0.0.0/8 is never socksified.
1560 Changes in version 0.1.1.18-rc - 2006-04-10
1562 - Work harder to download live network-statuses from all the
1563 directory authorities we know about. Improve the threshold
1564 decision logic so we're more robust to edge cases.
1565 - When fetching rendezvous descriptors, we were willing to ask
1566 v2 authorities too, which would always return 404.
1569 - Stop listing down or invalid nodes in the v1 directory. This will
1570 reduce its bulk by about 1/3, and reduce load on directory
1572 - When deciding whether a router is Fast or Guard-worthy, consider
1573 his advertised BandwidthRate and not just the BandwidthCapacity.
1574 - No longer ship INSTALL and README files -- they are useless now.
1575 - Force rpmbuild to behave and honor target_cpu.
1576 - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
1577 - Start to include translated versions of the tor-doc-*.html
1578 files, along with the screenshots. Still needs more work.
1579 - Start sending back 512 and 451 errors if mapaddress fails,
1580 rather than not sending anything back at all.
1581 - When we fail to bind or listen on an incoming or outgoing
1582 socket, we should close it before failing. otherwise we just
1583 leak it. (thanks to weasel for finding.)
1584 - Allow "getinfo dir/status/foo" to work, as long as your DirPort
1585 is enabled. (This is a hack, and will be fixed in 0.1.2.x.)
1586 - Make NoPublish (even though deprecated) work again.
1587 - Fix a minor security flaw where a versioning auth dirserver
1588 could list a recommended version many times in a row to make
1589 clients more convinced that it's recommended.
1590 - Fix crash bug if there are two unregistered servers running
1591 with the same nickname, one of them is down, and you ask for
1592 them by nickname in your EntryNodes or ExitNodes. Also, try
1593 to pick the one that's running rather than an arbitrary one.
1594 - Fix an infinite loop we could hit if we go offline for too long.
1595 - Complain when we hit WSAENOBUFS on recv() or write() too.
1596 Perhaps this will help us hunt the bug.
1597 - If you're not a versioning dirserver, don't put the string
1598 "client-versions \nserver-versions \n" in your network-status.
1599 - Lower the minimum required number of file descriptors to 1000,
1600 so we can have some overhead for Valgrind on Linux, where the
1601 default ulimit -n is 1024.
1604 - Add tor.dizum.com as the fifth authoritative directory server.
1605 - Add a new config option FetchUselessDescriptors, off by default,
1606 for when you plan to run "exitlist" on your client and you want
1607 to know about even the non-running descriptors.
1610 Changes in version 0.1.1.17-rc - 2006-03-28
1612 - Clients and servers since 0.1.1.10-alpha have been expiring
1613 connections whenever they are idle for 5 minutes and they *do*
1614 have circuits on them. Oops. With this new version, clients will
1615 discard their previous entry guard choices and avoid choosing
1616 entry guards running these flawed versions.
1617 - Fix memory leak when uncompressing concatenated zlib streams. This
1618 was causing substantial leaks over time on Tor servers.
1619 - The v1 directory was including servers as much as 48 hours old,
1620 because that's how the new routerlist->routers works. Now only
1621 include them if they're 20 hours old or less.
1624 - Resume building on irix64, netbsd 2.0, etc.
1625 - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
1627 - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
1628 and it is confusing some users.
1629 - Mirrors stop caching the v1 directory so often.
1630 - Make the max number of old descriptors that a cache will hold
1631 rise with the number of directory authorities, so we can scale.
1632 - Change our win32 uname() hack to be more forgiving about what
1633 win32 versions it thinks it's found.
1636 - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
1638 - When the controller's *setconf commands fail, collect an error
1639 message in a string and hand it back to the controller.
1640 - Make the v2 dir's "Fast" flag based on relative capacity, just
1641 like "Stable" is based on median uptime. Name everything in the
1642 top 7/8 Fast, and only the top 1/2 gets to be a Guard.
1643 - Log server fingerprint on startup, so new server operators don't
1644 have to go hunting around their filesystem for it.
1645 - Return a robots.txt on our dirport to discourage google indexing.
1646 - Let the controller ask for GETINFO dir/status/foo so it can ask
1647 directly rather than connecting to the dir port. Only works when
1648 dirport is set for now.
1650 o New config options rather than constants in the code:
1651 - SocksTimeout: How long do we let a socks connection wait
1652 unattached before we fail it?
1653 - CircuitBuildTimeout: Cull non-open circuits that were born
1654 at least this many seconds ago.
1655 - CircuitIdleTimeout: Cull open clean circuits that were born
1656 at least this many seconds ago.
1659 Changes in version 0.1.1.16-rc - 2006-03-18
1660 o Bugfixes on 0.1.1.15-rc:
1661 - Fix assert when the controller asks to attachstream a connect-wait
1662 or resolve-wait stream.
1663 - Now do address rewriting when the controller asks us to attach
1664 to a particular circuit too. This will let Blossom specify
1665 "moria2.exit" without having to learn what moria2's IP address is.
1666 - Make the "tor --verify-config" command-line work again, so people
1667 can automatically check if their torrc will parse.
1668 - Authoritative dirservers no longer require an open connection from
1669 a server to consider him "reachable". We need this change because
1670 when we add new auth dirservers, old servers won't know not to
1672 - Let Tor build on Sun CC again.
1673 - Fix an off-by-one buffer size in dirserv.c that magically never
1674 hit our three authorities but broke sjmurdoch's own tor network.
1675 - If we as a directory mirror don't know of any v1 directory
1676 authorities, then don't try to cache any v1 directories.
1677 - Stop warning about unknown servers in our family when they are
1678 given as hex digests.
1679 - Stop complaining as quickly to the server operator that he
1680 hasn't registered his nickname/key binding.
1681 - Various cleanups so we can add new V2 Auth Dirservers.
1682 - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
1683 reflect the updated flags in our v2 dir protocol.
1684 - Resume allowing non-printable characters for exit streams (both
1685 for connecting and for resolving). Now we tolerate applications
1686 that don't follow the RFCs. But continue to block malformed names
1689 o Bugfixes on 0.1.0.x:
1690 - Fix assert bug in close_logs(): when we close and delete logs,
1691 remove them all from the global "logfiles" list.
1692 - Fix minor integer overflow in calculating when we expect to use up
1693 our bandwidth allocation before hibernating.
1694 - Fix a couple of bugs in OpenSSL detection. Also, deal better when
1695 there are multiple SSLs installed with different versions.
1696 - When we try to be a server and Address is not explicitly set and
1697 our hostname resolves to a private IP address, try to use an
1698 interface address if it has a public address. Now Windows machines
1699 that think of themselves as localhost can work by default.
1702 - Let the controller ask for GETINFO dir/server/foo so it can ask
1703 directly rather than connecting to the dir port.
1704 - Let the controller tell us about certain router descriptors
1705 that it doesn't want Tor to use in circuits. Implement
1706 SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
1707 - New config option SafeSocks to reject all application connections
1708 using unsafe socks protocols. Defaults to off.
1711 Changes in version 0.1.1.15-rc - 2006-03-11
1712 o Bugfixes and cleanups:
1713 - When we're printing strings from the network, don't try to print
1714 non-printable characters. This protects us against shell escape
1715 sequence exploits, and also against attacks to fool humans into
1716 misreading their logs.
1717 - Fix a bug where Tor would fail to establish any connections if you
1718 left it off for 24 hours and then started it: we were happy with
1719 the obsolete network statuses, but they all referred to router
1720 descriptors that were too old to fetch, so we ended up with no
1721 valid router descriptors.
1722 - Fix a seg fault in the controller's "getinfo orconn-status"
1723 command while listing status on incoming handshaking connections.
1724 Introduce a status name "NEW" for these connections.
1725 - If we get a linelist or linelist_s config option from the torrc
1726 (e.g. ExitPolicy) and it has no value, warn and skip rather than
1727 silently resetting it to its default.
1728 - Don't abandon entry guards until they've been down or gone for
1730 - Cleaner and quieter log messages.
1733 - New controller signal NEWNYM that makes new application requests
1735 - Add a new circuit purpose 'controller' to let the controller ask
1736 for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
1737 controller command to let you specify the purpose if you're
1738 starting a new circuit. Add a new SETCIRCUITPURPOSE controller
1739 command to let you change a circuit's purpose after it's been
1741 - Accept "private:*" in routerdesc exit policies; not generated yet
1742 because older Tors do not understand it.
1743 - Add BSD-style contributed startup script "rc.subr" from Peter
1747 Changes in version 0.1.1.14-alpha - 2006-02-20
1748 o Bugfixes on 0.1.1.x:
1749 - Don't die if we ask for a stdout or stderr log (even implicitly)
1750 and we're set to RunAsDaemon -- just warn.
1751 - We still had a few bugs in the OR connection rotation code that
1752 caused directory servers to slowly aggregate connections to other
1753 fast Tor servers. This time for sure!
1754 - Make log entries on Win32 include the name of the function again.
1755 - We were treating a pair of exit policies if they were equal even
1756 if one said accept and the other said reject -- causing us to
1757 not always publish a new descriptor since we thought nothing
1759 - Retry pending server downloads as well as pending networkstatus
1760 downloads when we unexpectedly get a socks request.
1761 - We were ignoring the IS_FAST flag in the directory status,
1762 meaning we were willing to pick trivial-bandwidth nodes for "fast"
1764 - If the controller's SAVECONF command fails (e.g. due to file
1765 permissions), let the controller know that it failed.
1768 - If we're trying to be a Tor server and running Windows 95/98/ME
1769 as a server, explain that we'll likely crash.
1770 - When we're a server, a client asks for an old-style directory,
1771 and our write bucket is empty, don't give it to him. This way
1772 small servers can continue to serve the directory *sometimes*,
1773 without getting overloaded.
1774 - Compress exit policies even more -- look for duplicate lines
1776 - Clients now honor the "guard" flag in the router status when
1777 picking entry guards, rather than looking at is_fast or is_stable.
1778 - Retain unrecognized lines in $DATADIR/state file, so that we can
1779 be forward-compatible.
1780 - Generate 18.0.0.0/8 address policy format in descs when we can;
1781 warn when the mask is not reducible to a bit-prefix.
1782 - Let the user set ControlListenAddress in the torrc. This can be
1783 dangerous, but there are some cases (like a secured LAN) where it
1785 - Split ReachableAddresses into ReachableDirAddresses and
1786 ReachableORAddresses, so we can restrict Dir conns to port 80
1787 and OR conns to port 443.
1788 - Now we can target arch and OS in rpm builds (contributed by
1789 Phobos). Also make the resulting dist-rpm filename match the
1791 - New config options to help controllers: FetchServerDescriptors
1792 and FetchHidServDescriptors for whether to fetch server
1793 info and hidserv info or let the controller do it, and
1794 PublishServerDescriptor and PublishHidServDescriptors.
1795 - Also let the controller set the __AllDirActionsPrivate config
1796 option if you want all directory fetches/publishes to happen via
1797 Tor (it assumes your controller bootstraps your circuits).
1800 Changes in version 0.1.0.17 - 2006-02-17
1801 o Crash bugfixes on 0.1.0.x:
1802 - When servers with a non-zero DirPort came out of hibernation,
1803 sometimes they would trigger an assert.
1805 o Other important bugfixes:
1806 - On platforms that don't have getrlimit (like Windows), we were
1807 artificially constraining ourselves to a max of 1024
1808 connections. Now just assume that we can handle as many as 15000
1809 connections. Hopefully this won't cause other problems.
1811 o Backported features:
1812 - When we're a server, a client asks for an old-style directory,
1813 and our write bucket is empty, don't give it to him. This way
1814 small servers can continue to serve the directory *sometimes*,
1815 without getting overloaded.
1816 - Whenever you get a 503 in response to a directory fetch, try
1817 once more. This will become important once servers start sending
1818 503's whenever they feel busy.
1819 - Fetch a new directory every 120 minutes, not every 40 minutes.
1820 Now that we have hundreds of thousands of users running the old
1821 directory algorithm, it's starting to hurt a lot.
1822 - Bump up the period for forcing a hidden service descriptor upload
1823 from 20 minutes to 1 hour.
1826 Changes in version 0.1.1.13-alpha - 2006-02-09
1827 o Crashes in 0.1.1.x:
1828 - When you tried to setconf ORPort via the controller, Tor would
1829 crash. So people using TorCP to become a server were sad.
1830 - Solve (I hope) the stack-smashing bug that we were seeing on fast
1831 servers. The problem appears to be something do with OpenSSL's
1832 random number generation, or how we call it, or something. Let me
1833 know if the crashes continue.
1834 - Turn crypto hardware acceleration off by default, until we find
1835 somebody smart who can test it for us. (It appears to produce
1836 seg faults in at least some cases.)
1837 - Fix a rare assert error when we've tried all intro points for
1838 a hidden service and we try fetching the service descriptor again:
1839 "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
1842 - Fix a major load balance bug: we were round-robining in 16 KB
1843 chunks, and servers with bandwidthrate of 20 KB, while downloading
1844 a 600 KB directory, would starve their other connections. Now we
1845 try to be a bit more fair.
1846 - Dir authorities and mirrors were never expiring the newest
1847 descriptor for each server, causing memory and directory bloat.
1848 - Fix memory-bloating and connection-bloating bug on servers: We
1849 were never closing any connection that had ever had a circuit on
1850 it, because we were checking conn->n_circuits == 0, yet we had a
1851 bug that let it go negative.
1852 - Make Tor work using squid as your http proxy again -- squid
1853 returns an error if you ask for a URL that's too long, and it uses
1854 a really generic error message. Plus, many people are behind a
1855 transparent squid so they don't even realize it.
1856 - On platforms that don't have getrlimit (like Windows), we were
1857 artificially constraining ourselves to a max of 1024
1858 connections. Now just assume that we can handle as many as 15000
1859 connections. Hopefully this won't cause other problems.
1860 - Add a new config option ExitPolicyRejectPrivate which defaults to
1861 1. This means all exit policies will begin with rejecting private
1862 addresses, unless the server operator explicitly turns it off.
1865 - Clients not longer download descriptors for non-running
1867 - Before we add new directory authorities, we should make it
1868 clear that only v1 authorities should receive/publish hidden
1869 service descriptors.
1872 - As soon as we've fetched some more directory info, immediately
1873 try to download more server descriptors. This way we don't have
1874 a 10 second pause during initial bootstrapping.
1875 - Remove even more loud log messages that the server operator can't
1877 - When we're running an obsolete or un-recommended version, make
1878 the log message more clear about what the problem is and what
1879 versions *are* still recommended.
1880 - Provide a more useful warn message when our onion queue gets full:
1881 the CPU is too slow or the exit policy is too liberal.
1882 - Don't warn when we receive a 503 from a dirserver/cache -- this
1883 will pave the way for them being able to refuse if they're busy.
1884 - When we fail to bind a listener, try to provide a more useful
1885 log message: e.g., "Is Tor already running?"
1886 - Adjust tor-spec to parameterize cell and key lengths. Now Ian
1887 Goldberg can prove things about our handshake protocol more
1889 - MaxConn has been obsolete for a while now. Document the ConnLimit
1890 config option, which is a *minimum* number of file descriptors
1891 that must be available else Tor refuses to start.
1892 - Apply Matt Ghali's --with-syslog-facility patch to ./configure
1893 if you log to syslog and want something other than LOG_DAEMON.
1894 - Make dirservers generate a separate "guard" flag to mean,
1895 "would make a good entry guard". Make clients parse it and vote
1896 on it. Not used by clients yet.
1897 - Implement --with-libevent-dir option to ./configure. Also, improve
1898 search techniques to find libevent, and use those for openssl too.
1899 - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
1900 - Only start testing reachability once we've established a
1901 circuit. This will make startup on dirservers less noisy.
1902 - Don't try to upload hidden service descriptors until we have
1903 established a circuit.
1904 - Fix the controller's "attachstream 0" command to treat conn like
1905 it just connected, doing address remapping, handling .exit and
1906 .onion idioms, and so on. Now we're more uniform in making sure
1907 that the controller hears about new and closing connections.
1910 Changes in version 0.1.1.12-alpha - 2006-01-11
1911 o Bugfixes on 0.1.1.x:
1912 - The fix to close duplicate server connections was closing all
1913 Tor client connections if they didn't establish a circuit
1914 quickly enough. Oops.
1915 - Fix minor memory issue (double-free) that happened on exit.
1917 o Bugfixes on 0.1.0.x:
1918 - Tor didn't warn when it failed to open a log file.
1921 Changes in version 0.1.1.11-alpha - 2006-01-10
1922 o Crashes in 0.1.1.x:
1923 - Include all the assert/crash fixes from 0.1.0.16.
1924 - If you start Tor and then quit very quickly, there were some
1925 races that tried to free things that weren't allocated yet.
1926 - Fix a rare memory stomp if you're running hidden services.
1927 - Fix segfault when specifying DirServer in config without nickname.
1928 - Fix a seg fault when you finish connecting to a server but at
1929 that moment you dump his server descriptor.
1930 - Extendcircuit and Attachstream controller commands would
1931 assert/crash if you don't give them enough arguments.
1932 - Fix an assert error when we're out of space in the connection_list
1933 and we try to post a hidden service descriptor (reported by weasel).
1934 - If you specify a relative torrc path and you set RunAsDaemon in
1935 your torrc, then it chdir()'s to the new directory. If you HUP,
1936 it tries to load the new torrc location, fails, and exits.
1937 The fix: no longer allow a relative path to torrc using -f.
1940 - Implement "entry guards": automatically choose a handful of entry
1941 nodes and stick with them for all circuits. Only pick new guards
1942 when the ones you have are unsuitable, and if the old guards
1943 become suitable again, switch back. This will increase security
1944 dramatically against certain end-point attacks. The EntryNodes
1945 config option now provides some hints about which entry guards you
1946 want to use most; and StrictEntryNodes means to only use those.
1947 - New directory logic: download by descriptor digest, not by
1948 fingerprint. Caches try to download all listed digests from
1949 authorities; clients try to download "best" digests from caches.
1950 This avoids partitioning and isolating attacks better.
1951 - Make the "stable" router flag in network-status be the median of
1952 the uptimes of running valid servers, and make clients pay
1953 attention to the network-status flags. Thus the cutoff adapts
1954 to the stability of the network as a whole, making IRC, IM, etc
1955 connections more reliable.
1958 - Tor servers with dynamic IP addresses were needing to wait 18
1959 hours before they could start doing reachability testing using
1960 the new IP address and ports. This is because they were using
1961 the internal descriptor to learn what to test, yet they were only
1962 rebuilding the descriptor once they decided they were reachable.
1963 - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
1964 to download certain server descriptors, throw them away, and then
1965 fetch them again after 30 minutes. Now mirrors throw away these
1966 server descriptors so clients can't get them.
1967 - We were leaving duplicate connections to other ORs open for a week,
1968 rather than closing them once we detect a duplicate. This only
1969 really affected authdirservers, but it affected them a lot.
1970 - Spread the authdirservers' reachability testing over the entire
1971 testing interval, so we don't try to do 500 TLS's at once every
1975 - If the network is down, and we try to connect to a conn because
1976 we have a circuit in mind, and we timeout (30 seconds) because the
1977 network never answers, we were expiring the circuit, but we weren't
1978 obsoleting the connection or telling the entry_guards functions.
1979 - Some Tor servers process billions of cells per day. These statistics
1980 need to be uint64_t's.
1981 - Check for integer overflows in more places, when adding elements
1982 to smartlists. This could possibly prevent a buffer overflow
1983 on malicious huge inputs. I don't see any, but I haven't looked
1985 - ReachableAddresses kept growing new "reject *:*" lines on every
1987 - When you "setconf log" via the controller, it should remove all
1988 logs. We were automatically adding back in a "log notice stdout".
1989 - Newly bootstrapped Tor networks couldn't establish hidden service
1990 circuits until they had nodes with high uptime. Be more tolerant.
1991 - We were marking servers down when they could not answer every piece
1992 of the directory request we sent them. This was far too harsh.
1993 - Fix the torify (tsocks) config file to not use Tor for localhost
1995 - Directory authorities now go to the proper authority when asking for
1996 a networkstatus, even when they want a compressed one.
1997 - Fix a harmless bug that was causing Tor servers to log
1998 "Got an end because of misc error, but we're not an AP. Closing."
1999 - Authorities were treating their own descriptor changes as cosmetic,
2000 meaning the descriptor available in the network-status and the
2001 descriptor that clients downloaded were different.
2002 - The OS X installer was adding a symlink for tor_resolve but
2003 the binary was called tor-resolve (reported by Thomas Hardly).
2004 - Workaround a problem with some http proxies where they refuse GET
2005 requests that specify "Content-Length: 0" (reported by Adrian).
2006 - Fix wrong log message when you add a "HiddenServiceNodes" config
2007 line without any HiddenServiceDir line (reported by Chris Thomas).
2010 - Write the TorVersion into the state file so we have a prayer of
2011 keeping forward and backward compatibility.
2012 - Revive the FascistFirewall config option rather than eliminating it:
2013 now it's a synonym for ReachableAddresses *:80,*:443.
2014 - Clients choose directory servers from the network status lists,
2015 not from their internal list of router descriptors. Now they can
2016 go to caches directly rather than needing to go to authorities
2018 - Directory authorities ignore router descriptors that have only
2019 cosmetic differences: do this for 0.1.0.x servers now too.
2020 - Add a new flag to network-status indicating whether the server
2021 can answer v2 directory requests too.
2022 - Authdirs now stop whining so loudly about bad descriptors that
2023 they fetch from other dirservers. So when there's a log complaint,
2024 it's for sure from a freshly uploaded descriptor.
2025 - Reduce memory requirements in our structs by changing the order
2027 - There used to be two ways to specify your listening ports in a
2028 server descriptor: on the "router" line and with a separate "ports"
2029 line. Remove support for the "ports" line.
2030 - New config option "AuthDirRejectUnlisted" for auth dirservers as
2031 a panic button: if we get flooded with unusable servers we can
2032 revert to only listing servers in the approved-routers file.
2033 - Auth dir servers can now mark a fingerprint as "!reject" or
2034 "!invalid" in the approved-routers file (as its nickname), to
2035 refuse descriptors outright or include them but marked as invalid.
2036 - Servers store bandwidth history across restarts/crashes.
2037 - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
2038 get a better idea of why their circuits failed. Not used yet.
2039 - Directory mirrors now cache up to 16 unrecognized network-status
2040 docs. Now we can add new authdirservers and they'll be cached too.
2041 - When picking a random directory, prefer non-authorities if any
2043 - New controller option "getinfo desc/all-recent" to fetch the
2044 latest server descriptor for every router that Tor knows about.
2047 Changes in version 0.1.0.16 - 2006-01-02
2048 o Crash bugfixes on 0.1.0.x:
2049 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
2050 corrupting the heap, losing FDs, or crashing when we need to resize
2051 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
2052 - It turns out sparc64 platforms crash on unaligned memory access
2053 too -- so detect and avoid this.
2054 - Handle truncated compressed data correctly (by detecting it and
2056 - Fix possible-but-unlikely free(NULL) in control.c.
2057 - When we were closing connections, there was a rare case that
2058 stomped on memory, triggering seg faults and asserts.
2059 - Avoid potential infinite recursion when building a descriptor. (We
2060 don't know that it ever happened, but better to fix it anyway.)
2061 - We were neglecting to unlink marked circuits from soon-to-close OR
2062 connections, which caused some rare scribbling on freed memory.
2063 - Fix a memory stomping race bug when closing the joining point of two
2064 rendezvous circuits.
2065 - Fix an assert in time parsing found by Steven Murdoch.
2067 o Other bugfixes on 0.1.0.x:
2068 - When we're doing reachability testing, provide more useful log
2069 messages so the operator knows what to expect.
2070 - Do not check whether DirPort is reachable when we are suppressing
2071 advertising it because of hibernation.
2072 - When building with -static or on Solaris, we sometimes needed -ldl.
2073 - When we're deciding whether a stream has enough circuits around
2074 that can handle it, count the freshly dirty ones and not the ones
2075 that are so dirty they won't be able to handle it.
2076 - When we're expiring old circuits, we had a logic error that caused
2077 us to close new rendezvous circuits rather than old ones.
2078 - Give a more helpful log message when you try to change ORPort via
2079 the controller: you should upgrade Tor if you want that to work.
2080 - We were failing to parse Tor versions that start with "Tor ".
2081 - Tolerate faulty streams better: when a stream fails for reason
2082 exitpolicy, stop assuming that the router is lying about his exit
2083 policy. When a stream fails for reason misc, allow it to retry just
2084 as if it was resolvefailed. When a stream has failed three times,
2085 reset its failure count so we can try again and get all three tries.
2088 Changes in version 0.1.1.10-alpha - 2005-12-11
2089 o Correctness bugfixes on 0.1.0.x:
2090 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
2091 corrupting the heap, losing FDs, or crashing when we need to resize
2092 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
2093 - Stop doing the complex voodoo overkill checking for insecure
2094 Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
2095 - When we were closing connections, there was a rare case that
2096 stomped on memory, triggering seg faults and asserts.
2097 - We were neglecting to unlink marked circuits from soon-to-close OR
2098 connections, which caused some rare scribbling on freed memory.
2099 - When we're deciding whether a stream has enough circuits around
2100 that can handle it, count the freshly dirty ones and not the ones
2101 that are so dirty they won't be able to handle it.
2102 - Recover better from TCP connections to Tor servers that are
2103 broken but don't tell you (it happens!); and rotate TLS
2104 connections once a week.
2105 - When we're expiring old circuits, we had a logic error that caused
2106 us to close new rendezvous circuits rather than old ones.
2107 - Fix a scary-looking but apparently harmless bug where circuits
2108 would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
2109 servers, and never switch to state CIRCUIT_STATE_OPEN.
2110 - When building with -static or on Solaris, we sometimes needed to
2112 - Give a useful message when people run Tor as the wrong user,
2113 rather than telling them to start chowning random directories.
2114 - We were failing to inform the controller about new .onion streams.
2116 o Security bugfixes on 0.1.0.x:
2117 - Refuse server descriptors if the fingerprint line doesn't match
2118 the included identity key. Tor doesn't care, but other apps (and
2119 humans) might actually be trusting the fingerprint line.
2120 - We used to kill the circuit when we receive a relay command we
2121 don't recognize. Now we just drop it.
2122 - Start obeying our firewall options more rigorously:
2123 . If we can't get to a dirserver directly, try going via Tor.
2124 . Don't ever try to connect (as a client) to a place our
2125 firewall options forbid.
2126 . If we specify a proxy and also firewall options, obey the
2127 firewall options even when we're using the proxy: some proxies
2128 can only proxy to certain destinations.
2129 - Fix a bug found by Lasse Overlier: when we were making internal
2130 circuits (intended to be cannibalized later for rendezvous and
2131 introduction circuits), we were picking them so that they had
2132 useful exit nodes. There was no need for this, and it actually
2133 aids some statistical attacks.
2134 - Start treating internal circuits and exit circuits separately.
2135 It's important to keep them separate because internal circuits
2136 have their last hops picked like middle hops, rather than like
2137 exit hops. So exiting on them will break the user's expectations.
2139 o Bugfixes on 0.1.1.x:
2140 - Take out the mis-feature where we tried to detect IP address
2141 flapping for people with DynDNS, and chose not to upload a new
2142 server descriptor sometimes.
2143 - Try to be compatible with OpenSSL 0.9.6 again.
2144 - Log fix: when the controller is logging about .onion addresses,
2145 sometimes it didn't include the ".onion" part of the address.
2146 - Don't try to modify options->DirServers internally -- if the
2147 user didn't specify any, just add the default ones directly to
2148 the trusted dirserver list. This fixes a bug where people running
2149 controllers would use SETCONF on some totally unrelated config
2150 option, and Tor would start yelling at them about changing their
2152 - Let the controller's redirectstream command specify a port, in
2153 case the controller wants to change that too.
2154 - When we requested a pile of server descriptors, we sometimes
2155 accidentally launched a duplicate request for the first one.
2156 - Bugfix for trackhostexits: write down the fingerprint of the
2157 chosen exit, not its nickname, because the chosen exit might not
2159 - When parsing foo.exit, if foo is unknown, and we are leaving
2160 circuits unattached, set the chosen_exit field and leave the
2161 address empty. This matters because controllers got confused
2163 - Directory authorities no longer try to download server
2164 descriptors that they know they will reject.
2166 o Features and updates:
2167 - Replace balanced trees with hash tables: this should make stuff
2168 significantly faster.
2169 - Resume using the AES counter-mode implementation that we ship,
2170 rather than OpenSSL's. Ours is significantly faster.
2171 - Many other CPU and memory improvements.
2172 - Add a new config option FastFirstHopPK (on by default) so clients
2173 do a trivial crypto handshake for their first hop, since TLS has
2174 already taken care of confidentiality and authentication.
2175 - Add a new config option TestSocks so people can see if their
2176 applications are using socks4, socks4a, socks5-with-ip, or
2177 socks5-with-hostname. This way they don't have to keep mucking
2178 with tcpdump and wondering if something got cached somewhere.
2179 - Warn when listening on a public address for socks. I suspect a
2180 lot of people are setting themselves up as open socks proxies,
2181 and they have no idea that jerks on the Internet are using them,
2182 since they simply proxy the traffic into the Tor network.
2183 - Add "private:*" as an alias in configuration for policies. Now
2184 you can simplify your exit policy rather than needing to list
2185 every single internal or nonroutable network space.
2186 - Add a new controller event type that allows controllers to get
2187 all server descriptors that were uploaded to a router in its role
2188 as authoritative dirserver.
2189 - Start shipping socks-extensions.txt, tor-doc-unix.html,
2190 tor-doc-server.html, and stylesheet.css in the tarball.
2191 - Stop shipping tor-doc.html in the tarball.
2194 Changes in version 0.1.1.9-alpha - 2005-11-15
2195 o Usability improvements:
2196 - Start calling it FooListenAddress rather than FooBindAddress,
2197 since few of our users know what it means to bind an address
2199 - Reduce clutter in server logs. We're going to try to make
2200 them actually usable now. New config option ProtocolWarnings that
2201 lets you hear about how _other Tors_ are breaking the protocol. Off
2203 - Divide log messages into logging domains. Once we put some sort
2204 of interface on this, it will let people looking at more verbose
2205 log levels specify the topics they want to hear more about.
2206 - Make directory servers return better http 404 error messages
2207 instead of a generic "Servers unavailable".
2208 - Check for even more Windows version flags when writing the platform
2209 string in server descriptors, and note any we don't recognize.
2210 - Clean up more of the OpenSSL memory when exiting, so we can detect
2211 memory leaks better.
2212 - Make directory authorities be non-versioning, non-naming by
2213 default. Now we can add new directory servers without requiring
2214 their operators to pay close attention.
2215 - When logging via syslog, include the pid whenever we provide
2216 a log entry. Suggested by Todd Fries.
2218 o Performance improvements:
2219 - Directory servers now silently throw away new descriptors that
2220 haven't changed much if the timestamps are similar. We do this to
2221 tolerate older Tor servers that upload a new descriptor every 15
2222 minutes. (It seemed like a good idea at the time.)
2223 - Inline bottleneck smartlist functions; use fast versions by default.
2224 - Add a "Map from digest to void*" abstraction digestmap_t so we
2225 can do less hex encoding/decoding. Use it in router_get_by_digest()
2226 to resolve a performance bottleneck.
2227 - Allow tor_gzip_uncompress to extract as much as possible from
2228 truncated compressed data. Try to extract as many
2229 descriptors as possible from truncated http responses (when
2230 DIR_PURPOSE_FETCH_ROUTERDESC).
2231 - Make circ->onionskin a pointer, not a static array. moria2 was using
2232 125000 circuit_t's after it had been up for a few weeks, which
2233 translates to 20+ megs of wasted space.
2234 - The private half of our EDH handshake keys are now chosen out
2235 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
2237 o Security improvements:
2238 - Start making directory caches retain old routerinfos, so soon
2239 clients can start asking by digest of descriptor rather than by
2240 fingerprint of server.
2241 - Add half our entropy from RAND_poll in OpenSSL. This knows how
2242 to use egd (if present), openbsd weirdness (if present), vms/os2
2243 weirdness (if we ever port there), and more in the future.
2245 o Bugfixes on 0.1.0.x:
2246 - Do round-robin writes of at most 16 kB per write. This might be
2247 more fair on loaded Tor servers, and it might resolve our Windows
2248 crash bug. It might also slow things down.
2249 - Our TLS handshakes were generating a single public/private
2250 keypair for the TLS context, rather than making a new one for
2251 each new connections. Oops. (But we were still rotating them
2252 periodically, so it's not so bad.)
2253 - When we were cannibalizing a circuit with a particular exit
2254 node in mind, we weren't checking to see if that exit node was
2255 already present earlier in the circuit. Oops.
2256 - When a Tor server's IP changes (e.g. from a dyndns address),
2257 upload a new descriptor so clients will learn too.
2258 - Really busy servers were keeping enough circuits open on stable
2259 connections that they were wrapping around the circuit_id
2260 space. (It's only two bytes.) This exposed a bug where we would
2261 feel free to reuse a circuit_id even if it still exists but has
2262 been marked for close. Try to fix this bug. Some bug remains.
2263 - If we would close a stream early (e.g. it asks for a .exit that
2264 we know would refuse it) but the LeaveStreamsUnattached config
2265 option is set by the controller, then don't close it.
2267 o Bugfixes on 0.1.1.8-alpha:
2268 - Fix a big pile of memory leaks, some of them serious.
2269 - Do not try to download a routerdesc if we would immediately reject
2271 - Resume inserting a newline between all router descriptors when
2272 generating (old style) signed directories, since our spec says
2274 - When providing content-type application/octet-stream for
2275 server descriptors using .z, we were leaving out the
2276 content-encoding header. Oops. (Everything tolerated this just
2277 fine, but that doesn't mean we need to be part of the problem.)
2278 - Fix a potential seg fault in getconf and getinfo using version 1
2279 of the controller protocol.
2280 - Avoid crash: do not check whether DirPort is reachable when we
2281 are suppressing it because of hibernation.
2282 - Make --hash-password not crash on exit.
2285 Changes in version 0.1.1.8-alpha - 2005-10-07
2286 o New features (major):
2287 - Clients don't download or use the directory anymore. Now they
2288 download and use network-statuses from the trusted dirservers,
2289 and fetch individual server descriptors as needed from mirrors.
2290 See dir-spec.txt for all the gory details.
2291 - Be more conservative about whether to advertise our DirPort.
2292 The main change is to not advertise if we're running at capacity
2293 and either a) we could hibernate or b) our capacity is low and
2294 we're using a default DirPort.
2295 - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
2297 o New features (minor):
2298 - Try to be smart about when to retry network-status and
2299 server-descriptor fetches. Still needs some tuning.
2300 - Stop parsing, storing, or using running-routers output (but
2301 mirrors still cache and serve it).
2302 - Consider a threshold of versioning dirservers (dirservers who have
2303 an opinion about which Tor versions are still recommended) before
2304 deciding whether to warn the user that he's obsolete.
2305 - Dirservers can now reject/invalidate by key and IP, with the
2306 config options "AuthDirInvalid" and "AuthDirReject". This is
2307 useful since currently we automatically list servers as running
2308 and usable even if we know they're jerks.
2309 - Provide dire warnings to any users who set DirServer; move it out
2310 of torrc.sample and into torrc.complete.
2311 - Add MyFamily to torrc.sample in the server section.
2312 - Add nicknames to the DirServer line, so we can refer to them
2313 without requiring all our users to memorize their IP addresses.
2314 - When we get an EOF or a timeout on a directory connection, note
2315 how many bytes of serverdesc we are dropping. This will help
2316 us determine whether it is smart to parse incomplete serverdesc
2318 - Add a new function to "change pseudonyms" -- that is, to stop
2319 using any currently-dirty circuits for new streams, so we don't
2320 link new actions to old actions. Currently it's only called on
2321 HUP (or SIGNAL RELOAD).
2322 - On sighup, if UseHelperNodes changed to 1, use new circuits.
2323 - Start using RAND_bytes rather than RAND_pseudo_bytes from
2324 OpenSSL. Also, reseed our entropy every hour, not just at
2325 startup. And entropy in 512-bit chunks, not 160-bit chunks.
2327 o Fixes on 0.1.1.7-alpha:
2328 - Nobody ever implemented EVENT_ADDRMAP for control protocol
2329 version 0, so don't let version 0 controllers ask for it.
2330 - If you requested something with too many newlines via the
2331 v1 controller protocol, you could crash tor.
2332 - Fix a number of memory leaks, including some pretty serious ones.
2333 - Re-enable DirPort testing again, so Tor servers will be willing
2334 to advertise their DirPort if it's reachable.
2335 - On TLS handshake, only check the other router's nickname against
2336 its expected nickname if is_named is set.
2338 o Fixes forward-ported from 0.1.0.15:
2339 - Don't crash when we don't have any spare file descriptors and we
2340 try to spawn a dns or cpu worker.
2341 - Make the numbers in read-history and write-history into uint64s,
2342 so they don't overflow and publish negatives in the descriptor.
2345 - For the OS X package's modified privoxy config file, comment
2346 out the "logfile" line so we don't log everything passed
2348 - We were whining about using socks4 or socks5-with-local-lookup
2349 even when it's an IP in the "virtual" range we designed exactly
2351 - We were leaking some memory every time the client changes IPs.
2352 - Never call free() on tor_malloc()d memory. This will help us
2353 use dmalloc to detect memory leaks.
2354 - Check for named servers when looking them up by nickname;
2355 warn when we'recalling a non-named server by its nickname;
2356 don't warn twice about the same name.
2357 - Try to list MyFamily elements by key, not by nickname, and warn
2358 if we've not heard of the server.
2359 - Make windows platform detection (uname equivalent) smarter.
2360 - It turns out sparc64 doesn't like unaligned access either.
2363 Changes in version 0.1.0.15 - 2005-09-23
2364 o Bugfixes on 0.1.0.x:
2365 - Reject ports 465 and 587 (spam targets) in default exit policy.
2366 - Don't crash when we don't have any spare file descriptors and we
2367 try to spawn a dns or cpu worker.
2368 - Get rid of IgnoreVersion undocumented config option, and make us
2369 only warn, never exit, when we're running an obsolete version.
2370 - Don't try to print a null string when your server finds itself to
2371 be unreachable and the Address config option is empty.
2372 - Make the numbers in read-history and write-history into uint64s,
2373 so they don't overflow and publish negatives in the descriptor.
2374 - Fix a minor memory leak in smartlist_string_remove().
2375 - We were only allowing ourselves to upload a server descriptor at
2376 most every 20 minutes, even if it changed earlier than that.
2377 - Clean up log entries that pointed to old URLs.
2380 Changes in version 0.1.1.7-alpha - 2005-09-14
2381 o Fixes on 0.1.1.6-alpha:
2382 - Exit servers were crashing when people asked them to make a
2383 connection to an address not in their exit policy.
2384 - Looking up a non-existent stream for a v1 control connection would
2386 - Fix a seg fault if we ask a dirserver for a descriptor by
2387 fingerprint but he doesn't know about him.
2388 - SETCONF was appending items to linelists, not clearing them.
2389 - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
2390 out and refuse the setconf if it would fail.
2391 - Downgrade the dirserver log messages when whining about
2395 - Add Peter Palfrader's check-tor script to tor/contrib/
2396 It lets you easily check whether a given server (referenced by
2397 nickname) is reachable by you.
2398 - Numerous changes to move towards client-side v2 directories. Not
2402 - If the user gave tor an odd number of command-line arguments,
2403 we were silently ignoring the last one. Now we complain and fail.
2404 [This wins the oldest-bug prize -- this bug has been present since
2405 November 2002, as released in Tor 0.0.0.]
2406 - Do not use unaligned memory access on alpha, mips, or mipsel.
2407 It *works*, but is very slow, so we treat them as if it doesn't.
2408 - Retry directory requests if we fail to get an answer we like
2409 from a given dirserver (we were retrying before, but only if
2410 we fail to connect).
2411 - When writing the RecommendedVersions line, sort them first.
2412 - When the client asked for a rendezvous port that the hidden
2413 service didn't want to provide, we were sending an IP address
2414 back along with the end cell. Fortunately, it was zero. But stop
2416 - Correct "your server is reachable" log entries to indicate that
2417 it was self-testing that told us so.
2420 Changes in version 0.1.1.6-alpha - 2005-09-09
2421 o Fixes on 0.1.1.5-alpha:
2422 - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
2423 - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
2424 - Fix bug with tor_memmem finding a match at the end of the string.
2425 - Make unit tests run without segfaulting.
2426 - Resolve some solaris x86 compile warnings.
2427 - Handle duplicate lines in approved-routers files without warning.
2428 - Fix bug where as soon as a server refused any requests due to his
2429 exit policy (e.g. when we ask for localhost and he tells us that's
2430 127.0.0.1 and he won't do it), we decided he wasn't obeying his
2431 exit policy using him for any exits.
2432 - Only do openssl hardware accelerator stuff if openssl version is
2435 o New controller features/fixes:
2436 - Add a "RESETCONF" command so you can set config options like
2437 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
2438 a config option in the torrc with no value, then it clears it
2439 entirely (rather than setting it to its default).
2440 - Add a "GETINFO config-file" to tell us where torrc is.
2441 - Avoid sending blank lines when GETINFO replies should be empty.
2442 - Add a QUIT command for the controller (for using it manually).
2443 - Fix a bug in SAVECONF that was adding default dirservers and
2444 other redundant entries to the torrc file.
2446 o Start on the new directory design:
2447 - Generate, publish, cache, serve new network-status format.
2448 - Publish individual descriptors (by fingerprint, by "all", and by
2450 - Publish client and server recommended versions separately.
2451 - Allow tor_gzip_uncompress() to handle multiple concatenated
2452 compressed strings. Serve compressed groups of router
2453 descriptors. The compression logic here could be more
2455 - Distinguish v1 authorities (all currently trusted directories)
2456 from v2 authorities (all trusted directories).
2457 - Change DirServers config line to note which dirs are v1 authorities.
2458 - Add configuration option "V1AuthoritativeDirectory 1" which
2459 moria1, moria2, and tor26 should set.
2460 - Remove option when getting directory cache to see whether they
2461 support running-routers; they all do now. Replace it with one
2462 to see whether caches support v2 stuff.
2465 - Dirservers now do their own external reachability testing of each
2466 Tor server, and only list them as running if they've been found to
2467 be reachable. We also send back warnings to the server's logs if
2468 it uploads a descriptor that we already believe is unreachable.
2469 - Implement exit enclaves: if we know an IP address for the
2470 destination, and there's a running Tor server at that address
2471 which allows exit to the destination, then extend the circuit to
2472 that exit first. This provides end-to-end encryption and end-to-end
2473 authentication. Also, if the user wants a .exit address or enclave,
2474 use 4 hops rather than 3, and cannibalize a general circ for it
2476 - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
2477 controller. Also, rotate dns and cpu workers if the controller
2478 changes options that will affect them; and initialize the dns
2479 worker cache tree whether or not we start out as a server.
2480 - Only upload a new server descriptor when options change, 18
2481 hours have passed, uptime is reset, or bandwidth changes a lot.
2482 - Check [X-]Forwarded-For headers in HTTP requests when generating
2483 log messages. This lets people run dirservers (and caches) behind
2484 Apache but still know which IP addresses are causing warnings.
2486 o Config option changes:
2487 - Replace (Fascist)Firewall* config options with a new
2488 ReachableAddresses option that understands address policies.
2489 For example, "ReachableAddresses *:80,*:443"
2490 - Get rid of IgnoreVersion undocumented config option, and make us
2491 only warn, never exit, when we're running an obsolete version.
2492 - Make MonthlyAccountingStart config option truly obsolete now.
2495 - Reject ports 465 and 587 in the default exit policy, since
2496 people have started using them for spam too.
2497 - It turns out we couldn't bootstrap a network since we added
2498 reachability detection in 0.1.0.1-rc. Good thing the Tor network
2499 has never gone down. Add an AssumeReachable config option to let
2500 servers and dirservers bootstrap. When we're trying to build a
2501 high-uptime or high-bandwidth circuit but there aren't enough
2502 suitable servers, try being less picky rather than simply failing.
2503 - Our logic to decide if the OR we connected to was the right guy
2504 was brittle and maybe open to a mitm for unverified routers.
2505 - We weren't cannibalizing circuits correctly for
2506 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
2507 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
2508 build those from scratch. This should make hidden services faster.
2509 - Predict required circuits better, with an eye toward making hidden
2510 services faster on the service end.
2511 - Retry streams if the exit node sends back a 'misc' failure. This
2512 should result in fewer random failures. Also, after failing
2513 from resolve failed or misc, reset the num failures, so we give
2514 it a fair shake next time we try.
2515 - Clean up the rendezvous warn log msgs, and downgrade some to info.
2516 - Reduce severity on logs about dns worker spawning and culling.
2517 - When we're shutting down and we do something like try to post a
2518 server descriptor or rendezvous descriptor, don't complain that
2519 we seem to be unreachable. Of course we are, we're shutting down.
2520 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
2521 We don't use them yet, but maybe one day our DNS resolver will be
2522 able to discover them.
2523 - Make ContactInfo mandatory for authoritative directory servers.
2524 - Require server descriptors to list IPv4 addresses -- hostnames
2525 are no longer allowed. This also fixes some potential security
2526 problems with people providing hostnames as their address and then
2527 preferentially resolving them to partition users.
2528 - Change log line for unreachability to explicitly suggest /etc/hosts
2529 as the culprit. Also make it clearer what IP address and ports we're
2530 testing for reachability.
2531 - Put quotes around user-supplied strings when logging so users are
2532 more likely to realize if they add bad characters (like quotes)
2534 - Let auth dir servers start without specifying an Address config
2536 - Make unit tests (and other invocations that aren't the real Tor)
2537 run without launching listeners, creating subdirectories, and so on.
2540 Changes in version 0.1.1.5-alpha - 2005-08-08
2541 o Bugfixes included in 0.1.0.14.
2543 o Bugfixes on 0.1.0.x:
2544 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
2545 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
2546 it would silently using ignore the 6668.
2549 Changes in version 0.1.0.14 - 2005-08-08
2550 o Bugfixes on 0.1.0.x:
2551 - Fix the other half of the bug with crypto handshakes
2553 - Fix an assert trigger if you send a 'signal term' via the
2554 controller when it's listening for 'event info' messages.
2557 Changes in version 0.1.1.4-alpha - 2005-08-04
2558 o Bugfixes included in 0.1.0.13.
2561 - Improve tor_gettimeofday() granularity on windows.
2562 - Make clients regenerate their keys when their IP address changes.
2563 - Implement some more GETINFO goodness: expose helper nodes, config
2564 options, getinfo keys.
2567 Changes in version 0.1.0.13 - 2005-08-04
2568 o Bugfixes on 0.1.0.x:
2569 - Fix a critical bug in the security of our crypto handshakes.
2570 - Fix a size_t underflow in smartlist_join_strings2() that made
2571 it do bad things when you hand it an empty smartlist.
2572 - Fix Windows installer to ship Tor license (thanks to Aphex for
2573 pointing out this oversight) and put a link to the doc directory
2575 - Explicitly set no-unaligned-access for sparc: it turns out the
2576 new gcc's let you compile broken code, but that doesn't make it
2580 Changes in version 0.1.1.3-alpha - 2005-07-23
2581 o Bugfixes on 0.1.1.2-alpha:
2582 - Fix a bug in handling the controller's "post descriptor"
2584 - Fix several bugs in handling the controller's "extend circuit"
2586 - Fix a bug in handling the controller's "stream status" event.
2587 - Fix an assert failure if we have a controller listening for
2588 circuit events and we go offline.
2589 - Re-allow hidden service descriptors to publish 0 intro points.
2590 - Fix a crash when generating your hidden service descriptor if
2591 you don't have enough intro points already.
2593 o New features on 0.1.1.2-alpha:
2594 - New controller function "getinfo accounting", to ask how
2595 many bytes we've used in this time period.
2596 - Experimental support for helper nodes: a lot of the risk from
2597 a small static adversary comes because users pick new random
2598 nodes every time they rebuild a circuit. Now users will try to
2599 stick to the same small set of entry nodes if they can. Not
2600 enabled by default yet.
2602 o Bugfixes on 0.1.0.12:
2603 - If you're an auth dir server, always publish your dirport,
2604 even if you haven't yet found yourself to be reachable.
2605 - Fix a size_t underflow in smartlist_join_strings2() that made
2606 it do bad things when you hand it an empty smartlist.
2609 Changes in version 0.1.0.12 - 2005-07-18
2610 o New directory servers:
2611 - tor26 has changed IP address.
2613 o Bugfixes on 0.1.0.x:
2614 - Fix a possible double-free in tor_gzip_uncompress().
2615 - When --disable-threads is set, do not search for or link against
2617 - Don't trigger an assert if an authoritative directory server
2618 claims its dirport is 0.
2619 - Fix bug with removing Tor as an NT service: some people were
2620 getting "The service did not return an error." Thanks to Matt
2624 Changes in version 0.1.1.2-alpha - 2005-07-15
2625 o New directory servers:
2626 - tor26 has changed IP address.
2628 o Bugfixes on 0.1.0.x, crashes/leaks:
2629 - Port the servers-not-obeying-their-exit-policies fix from
2631 - Fix an fd leak in start_daemon().
2632 - On Windows, you can't always reopen a port right after you've
2633 closed it. So change retry_listeners() to only close and re-open
2634 ports that have changed.
2635 - Fix a possible double-free in tor_gzip_uncompress().
2637 o Bugfixes on 0.1.0.x, usability:
2638 - When tor_socketpair() fails in Windows, give a reasonable
2639 Windows-style errno back.
2640 - Let people type "tor --install" as well as "tor -install" when
2642 want to make it an NT service.
2643 - NT service patch from Matt Edman to improve error messages.
2644 - When the controller asks for a config option with an abbreviated
2645 name, give the full name in our response.
2646 - Correct the man page entry on TrackHostExitsExpire.
2647 - Looks like we were never delivering deflated (i.e. compressed)
2648 running-routers lists, even when asked. Oops.
2649 - When --disable-threads is set, do not search for or link against
2652 o Bugfixes on 0.1.1.x:
2653 - Fix a seg fault with autodetecting which controller version is
2657 - New hidden service descriptor format: put a version in it, and
2658 let people specify introduction/rendezvous points that aren't
2659 in "the directory" (which is subjective anyway).
2660 - Allow the DEBUG controller event to work again. Mark certain log
2661 entries as "don't tell this to controllers", so we avoid cycles.
2664 Changes in version 0.1.0.11 - 2005-06-30
2665 o Bugfixes on 0.1.0.x:
2666 - Fix major security bug: servers were disregarding their
2667 exit policies if clients behaved unexpectedly.
2668 - Make OS X init script check for missing argument, so we don't
2669 confuse users who invoke it incorrectly.
2670 - Fix a seg fault in "tor --hash-password foo".
2671 - The MAPADDRESS control command was broken.
2674 Changes in version 0.1.1.1-alpha - 2005-06-29
2676 - Make OS X init script check for missing argument, so we don't
2677 confuse users who invoke it incorrectly.
2678 - Fix a seg fault in "tor --hash-password foo".
2679 - Fix a possible way to DoS dirservers.
2680 - When we complain that your exit policy implicitly allows local or
2681 private address spaces, name them explicitly so operators can
2683 - Make the log message less scary when all the dirservers are
2684 temporarily unreachable.
2685 - We were printing the number of idle dns workers incorrectly when
2689 - Revised controller protocol (version 1) that uses ascii rather
2690 than binary. Add supporting libraries in python and java so you
2691 can use the controller from your applications without caring how
2693 - Spiffy new support for crypto hardware accelerators. Can somebody
2697 Changes in version 0.0.9.10 - 2005-06-16
2698 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
2699 - Refuse relay cells that claim to have a length larger than the
2700 maximum allowed. This prevents a potential attack that could read
2701 arbitrary memory (e.g. keys) from an exit server's process
2705 Changes in version 0.1.0.10 - 2005-06-14
2706 o Allow a few EINVALs from libevent before dying. Warn on kqueue with
2707 libevent before 1.1a.
2710 Changes in version 0.1.0.9-rc - 2005-06-09
2712 - Reset buf->highwater every time buf_shrink() is called, not just on
2713 a successful shrink. This was causing significant memory bloat.
2714 - Fix buffer overflow when checking hashed passwords.
2715 - Security fix: if seeding the RNG on Win32 fails, quit.
2716 - Allow seeding the RNG on Win32 even when you're not running as
2718 - Disable threading on Solaris too. Something is wonky with it,
2719 cpuworkers, and reentrant libs.
2720 - Reenable the part of the code that tries to flush as soon as an
2721 OR outbuf has a full TLS record available. Perhaps this will make
2722 OR outbufs not grow as huge except in rare cases, thus saving lots
2723 of CPU time plus memory.
2724 - Reject malformed .onion addresses rather then passing them on as
2725 normal web requests.
2726 - Adapt patch from Adam Langley: fix possible memory leak in
2727 tor_lookup_hostname().
2728 - Initialize libevent later in the startup process, so the logs are
2729 already established by the time we start logging libevent warns.
2730 - Use correct errno on win32 if libevent fails.
2731 - Check and warn about known-bad/slow libevent versions.
2732 - Pay more attention to the ClientOnly config option.
2733 - Have torctl.in/tor.sh.in check for location of su binary (needed
2735 - Correct/add man page entries for LongLivedPorts, ExitPolicy,
2736 KeepalivePeriod, ClientOnly, NoPublish, HttpProxy, HttpsProxy,
2737 HttpProxyAuthenticator
2738 - Stop warning about sigpipes in the logs. We're going to
2739 pretend that getting these occassionally is normal and fine.
2740 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in
2742 installer screens; and don't put stuff into StartupItems unless
2743 the user asks you to.
2744 - Require servers that use the default dirservers to have public IP
2745 addresses. We have too many servers that are configured with private
2746 IPs and their admins never notice the log entries complaining that
2747 their descriptors are being rejected.
2748 - Add OSX uninstall instructions. An actual uninstall script will
2752 Changes in version 0.1.0.8-rc - 2005-05-23
2754 - It turns out that kqueue on OS X 10.3.9 was causing kernel
2755 panics. Disable kqueue on all OS X Tors.
2756 - Fix RPM: remove duplicate line accidentally added to the rpm
2758 - Disable threads on openbsd too, since its gethostaddr is not
2760 - Tolerate libevent 0.8 since it still works, even though it's
2762 - Enable building on Red Hat 9.0 again.
2763 - Allow the middle hop of the testing circuit to be running any
2764 version, now that most of them have the bugfix to let them connect
2765 to unknown servers. This will allow reachability testing to work
2766 even when 0.0.9.7-0.0.9.9 become obsolete.
2767 - Handle relay cells with rh.length too large. This prevents
2768 a potential attack that could read arbitrary memory (maybe even
2769 keys) from the exit server's process.
2770 - We screwed up the dirport reachability testing when we don't yet
2771 have a cached version of the directory. Hopefully now fixed.
2772 - Clean up router_load_single_router() (used by the controller),
2773 so it doesn't seg fault on error.
2774 - Fix a minor memory leak when somebody establishes an introduction
2775 point at your Tor server.
2776 - If a socks connection ends because read fails, don't warn that
2777 you're not sending a socks reply back.
2780 - Add HttpProxyAuthenticator config option too, that works like
2781 the HttpsProxyAuthenticator config option.
2782 - Encode hashed controller passwords in hex instead of base64,
2783 to make it easier to write controllers.
2786 Changes in version 0.1.0.7-rc - 2005-05-17
2788 - Fix a bug in the OS X package installer that prevented it from
2789 installing on Tiger.
2790 - Fix a script bug in the OS X package installer that made it
2791 complain during installation.
2792 - Find libevent even if it's hiding in /usr/local/ and your
2793 CFLAGS and LDFLAGS don't tell you to look there.
2794 - Be able to link with libevent as a shared library (the default
2795 after 1.0d), even if it's hiding in /usr/local/lib and even
2796 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
2797 assuming you're running gcc. Otherwise fail and give a useful
2799 - Fix a bug in the RPM packager: set home directory for _tor to
2800 something more reasonable when first installing.
2801 - Free a minor amount of memory that is still reachable on exit.
2804 Changes in version 0.1.0.6-rc - 2005-05-14
2806 - Implement --disable-threads configure option. Disable threads on
2807 netbsd by default, because it appears to have no reentrant resolver
2809 - Apple's OS X 10.4.0 ships with a broken kqueue. The new libevent
2810 release (1.1) detects and disables kqueue if it's broken.
2811 - Append default exit policy before checking for implicit internal
2812 addresses. Now we don't log a bunch of complaints on startup
2813 when using the default exit policy.
2814 - Some people were putting "Address " in their torrc, and they had
2815 a buggy resolver that resolved " " to 0.0.0.0. Oops.
2816 - If DataDir is ~/.tor, and that expands to /.tor, then default to
2817 LOCALSTATEDIR/tor instead.
2818 - Fix fragmented-message bug in TorControl.py.
2819 - Resolve a minor bug which would prevent unreachable dirports
2820 from getting suppressed in the published descriptor.
2821 - When the controller gave us a new descriptor, we weren't resolving
2822 it immediately, so Tor would think its address was 0.0.0.0 until
2823 we fetched a new directory.
2824 - Fix an uppercase/lowercase case error in suppressing a bogus
2825 libevent warning on some Linuxes.
2828 - Begin scrubbing sensitive strings from logs by default. Turn off
2829 the config option SafeLogging if you need to do debugging.
2830 - Switch to a new buffer management algorithm, which tries to avoid
2831 reallocing and copying quite as much. In first tests it looks like
2832 it uses *more* memory on average, but less cpu.
2833 - First cut at support for "create-fast" cells. Clients can use
2834 these when extending to their first hop, since the TLS already
2835 provides forward secrecy and authentication. Not enabled on
2837 - When dirservers refuse a router descriptor, we now log its
2838 contactinfo, platform, and the poster's IP address.
2839 - Call tor_free_all instead of connections_free_all after forking, to
2840 save memory on systems that need to fork.
2841 - Whine at you if you're a server and you don't set your contactinfo.
2842 - Implement --verify-config command-line option to check if your torrc
2843 is valid without actually launching Tor.
2844 - Rewrite address "serifos.exit" to "localhost.serifos.exit"
2845 rather than just rejecting it.
2848 Changes in version 0.1.0.5-rc - 2005-04-27
2850 - Stop trying to print a null pointer if an OR conn fails because
2851 we didn't like its cert.
2853 - Switch our internal buffers implementation to use a ring buffer,
2854 to hopefully improve performance for fast servers a lot.
2855 - Add HttpsProxyAuthenticator support (basic auth only), based
2856 on patch from Adam Langley.
2857 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
2858 the fast servers that have been joining lately.
2859 - Give hidden service accesses extra time on the first attempt,
2860 since 60 seconds is often only barely enough. This might improve
2862 - Improve performance for dirservers: stop re-parsing the whole
2863 directory every time you regenerate it.
2864 - Add more debugging info to help us find the weird dns freebsd
2865 pthreads bug; cleaner debug messages to help track future issues.
2868 Changes in version 0.0.9.9 - 2005-04-23
2869 o Bugfixes on 0.0.9.x:
2870 - If unofficial Tor clients connect and send weird TLS certs, our
2871 Tor server triggers an assert. This release contains a minimal
2872 backport from the broader fix that we put into 0.1.0.4-rc.
2875 Changes in version 0.1.0.4-rc - 2005-04-23
2877 - If unofficial Tor clients connect and send weird TLS certs, our
2878 Tor server triggers an assert. Stop asserting, and start handling
2879 TLS errors better in other situations too.
2880 - When the controller asks us to tell it about all the debug-level
2881 logs, it turns out we were generating debug-level logs while
2882 telling it about them, which turns into a bad loop. Now keep
2883 track of whether you're sending a debug log to the controller,
2884 and don't log when you are.
2885 - Fix the "postdescriptor" feature of the controller interface: on
2886 non-complete success, only say "done" once.
2888 - Clients are now willing to load balance over up to 2mB, not 1mB,
2889 of advertised bandwidth capacity.
2890 - Add a NoPublish config option, so you can be a server (e.g. for
2891 testing running Tor servers in other Tor networks) without
2892 publishing your descriptor to the primary dirservers.
2895 Changes in version 0.1.0.3-rc - 2005-04-08
2896 o Improvements on 0.1.0.2-rc:
2897 - Client now retries when streams end early for 'hibernating' or
2898 'resource limit' reasons, rather than failing them.
2899 - More automated handling for dirserver operators:
2900 - Automatically approve nodes running 0.1.0.2-rc or later,
2901 now that the the reachability detection stuff is working.
2902 - Now we allow two unverified servers with the same nickname
2903 but different keys. But if a nickname is verified, only that
2904 nickname+key are allowed.
2905 - If you're an authdirserver connecting to an address:port,
2906 and it's not the OR you were expecting, forget about that
2907 descriptor. If he *was* the one you were expecting, then forget
2908 about all other descriptors for that address:port.
2909 - Allow servers to publish descriptors from 12 hours in the future.
2910 Corollary: only whine about clock skew from the dirserver if
2911 he's a trusted dirserver (since now even verified servers could
2912 have quite wrong clocks).
2913 - Adjust maximum skew and age for rendezvous descriptors: let skew
2914 be 48 hours rather than 90 minutes.
2915 - Efficiency improvements:
2916 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
2917 it much faster to look up a circuit for each relay cell.
2918 - Remove most calls to assert_all_pending_dns_resolves_ok(),
2919 since they're eating our cpu on exit nodes.
2920 - Stop wasting time doing a case insensitive comparison for every
2921 dns name every time we do any lookup. Canonicalize the names to
2922 lowercase and be done with it.
2923 - Start sending 'truncated' cells back rather than destroy cells,
2924 if the circuit closes in front of you. This means we won't have
2925 to abandon partially built circuits.
2926 - Only warn once per nickname from add_nickname_list_to_smartlist
2927 per failure, so an entrynode or exitnode choice that's down won't
2929 - Put a note in the torrc about abuse potential with the default
2931 - Revise control spec and implementation to allow all log messages to
2932 be sent to controller with their severities intact (suggested by
2933 Matt Edman). Update TorControl to handle new log event types.
2934 - Provide better explanation messages when controller's POSTDESCRIPTOR
2936 - Stop putting nodename in the Platform string in server descriptors.
2937 It doesn't actually help, and it is confusing/upsetting some people.
2939 o Bugfixes on 0.1.0.2-rc:
2940 - We were printing the host mask wrong in exit policies in server
2941 descriptors. This isn't a critical bug though, since we were still
2942 obeying the exit policy internally.
2943 - Fix Tor when compiled with libevent but without pthreads: move
2944 connection_unregister() from _connection_free() to
2946 - Fix an assert trigger (already fixed in 0.0.9.x): when we have
2947 the rare mysterious case of accepting a conn on 0.0.0.0:0, then
2948 when we look through the connection array, we'll find any of the
2949 cpu/dnsworkers. This is no good.
2951 o Bugfixes on 0.0.9.8:
2952 - Fix possible bug on threading platforms (e.g. win32) which was
2953 leaking a file descriptor whenever a cpuworker or dnsworker died.
2954 - When using preferred entry or exit nodes, ignore whether the
2955 circuit wants uptime or capacity. They asked for the nodes, they
2957 - chdir() to your datadirectory at the *end* of the daemonize process,
2958 not the beginning. This was a problem because the first time you
2959 run tor, if your datadir isn't there, and you have runasdaemon set
2960 to 1, it will try to chdir to it before it tries to create it. Oops.
2961 - Handle changed router status correctly when dirserver reloads
2962 fingerprint file. We used to be dropping all unverified descriptors
2963 right then. The bug was hidden because we would immediately
2964 fetch a directory from another dirserver, which would include the
2965 descriptors we just dropped.
2966 - When we're connecting to an OR and he's got a different nickname/key
2967 than we were expecting, only complain loudly if we're an OP or a
2968 dirserver. Complaining loudly to the OR admins just confuses them.
2969 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
2970 artificially capped at 500kB.
2973 Changes in version 0.0.9.8 - 2005-04-07
2974 o Bugfixes on 0.0.9.x:
2975 - We have a bug that I haven't found yet. Sometimes, very rarely,
2976 cpuworkers get stuck in the 'busy' state, even though the cpuworker
2977 thinks of itself as idle. This meant that no new circuits ever got
2978 established. Here's a workaround to kill any cpuworker that's been
2979 busy for more than 100 seconds.
2982 Changes in version 0.1.0.2-rc - 2005-04-01
2983 o Bugfixes on 0.1.0.1-rc:
2984 - Fixes on reachability detection:
2985 - Don't check for reachability while hibernating.
2986 - If ORPort is reachable but DirPort isn't, still publish the
2987 descriptor, but zero out DirPort until it's found reachable.
2988 - When building testing circs for ORPort testing, use only
2989 high-bandwidth nodes, so fewer circuits fail.
2990 - Complain about unreachable ORPort separately from unreachable
2991 DirPort, so the user knows what's going on.
2992 - Make sure we only conclude ORPort reachability if we didn't
2993 initiate the conn. Otherwise we could falsely conclude that
2994 we're reachable just because we connected to the guy earlier
2995 and he used that same pipe to extend to us.
2996 - Authdirservers shouldn't do ORPort reachability detection,
2997 since they're in clique mode, so it will be rare to find a
2998 server not already connected to them.
2999 - When building testing circuits, always pick middle hops running
3000 Tor 0.0.9.7, so we avoid the "can't extend to unknown routers"
3001 bug. (This is a kludge; it will go away when 0.0.9.x becomes
3003 - When we decide we're reachable, actually publish our descriptor
3005 - Fix bug in redirectstream in the controller.
3006 - Fix the state descriptor strings so logs don't claim edge streams
3007 are in a different state than they actually are.
3008 - Use recent libevent features when possible (this only really affects
3009 win32 and osx right now, because the new libevent with these
3010 features hasn't been released yet). Add code to suppress spurious
3012 - Prevent possible segfault in connection_close_unattached_ap().
3013 - Fix newlines on torrc in win32.
3014 - Improve error msgs when tor-resolve fails.
3016 o Improvements on 0.0.9.x:
3017 - New experimental script tor/contrib/ExerciseServer.py (needs more
3018 work) that uses the controller interface to build circuits and
3019 fetch pages over them. This will help us bootstrap servers that
3020 have lots of capacity but haven't noticed it yet.
3021 - New experimental script tor/contrib/PathDemo.py (needs more work)
3022 that uses the controller interface to let you choose whole paths
3024 "<hostname>.<path,separated by dots>.<length of path>.path"
3025 - When we've connected to an OR and handshaked but didn't like
3026 the result, we were closing the conn without sending destroy
3027 cells back for pending circuits. Now send those destroys.
3030 Changes in version 0.0.9.7 - 2005-04-01
3031 o Bugfixes on 0.0.9.x:
3032 - Fix another race crash bug (thanks to Glenn Fink for reporting).
3033 - Compare identity to identity, not to nickname, when extending to
3034 a router not already in the directory. This was preventing us from
3035 extending to unknown routers. Oops.
3036 - Make sure to create OS X Tor user in <500 range, so we aren't
3037 creating actual system users.
3038 - Note where connection-that-hasn't-sent-end was marked, and fix
3039 a few really loud instances of this harmless bug (it's fixed more
3043 Changes in version 0.1.0.1-rc - 2005-03-28
3045 - Add reachability testing. Your Tor server will automatically try
3046 to see if its ORPort and DirPort are reachable from the outside,
3047 and it won't upload its descriptor until it decides they are.
3048 - Handle unavailable hidden services better. Handle slow or busy
3049 hidden services better.
3050 - Add support for CONNECTing through https proxies, with "HttpsProxy"
3052 - New exit policy: accept most low-numbered ports, rather than
3053 rejecting most low-numbered ports.
3054 - More Tor controller support (still experimental). See
3055 http://tor.eff.org/doc/control-spec.txt for all the new features,
3056 including signals to emulate unix signals from any platform;
3057 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
3058 closestream; closecircuit; etc.
3059 - Make nt services work and start on startup on win32 (based on
3060 patch by Matt Edman).
3061 - Add a new AddressMap config directive to rewrite incoming socks
3062 addresses. This lets you, for example, declare an implicit
3063 required exit node for certain sites.
3064 - Add a new TrackHostExits config directive to trigger addressmaps
3065 for certain incoming socks addresses -- for sites that break when
3066 your exit keeps changing (based on patch by Mike Perry).
3067 - Redo the client-side dns cache so it's just an addressmap too.
3068 - Notice when our IP changes, and reset stats/uptime/reachability.
3069 - When an application is using socks5, give him the whole variety of
3070 potential socks5 responses (connect refused, host unreachable, etc),
3071 rather than just "success" or "failure".
3072 - A more sane version numbering system. See
3073 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
3074 - New contributed script "exitlist": a simple python script to
3075 parse directories and find Tor nodes that exit to listed
3077 - New contributed script "privoxy-tor-toggle" to toggle whether
3078 Privoxy uses Tor. Seems to be configured for Debian by default.
3079 - Report HTTP reasons to client when getting a response from directory
3080 servers -- so you can actually know what went wrong.
3081 - New config option MaxAdvertisedBandwidth which lets you advertise
3082 a low bandwidthrate (to not attract as many circuits) while still
3083 allowing a higher bandwidthrate in reality.
3085 o Robustness/stability fixes:
3086 - Make Tor use Niels Provos's libevent instead of its current
3087 poll-but-sometimes-select mess. This will let us use faster async
3088 cores (like epoll, kpoll, and /dev/poll), and hopefully work better
3090 - pthread support now too. This was forced because when we forked,
3091 we ended up wasting a lot of duplicate ram over time. Also switch
3092 to foo_r versions of some library calls to allow reentry and
3094 - Better handling for heterogeneous / unreliable nodes:
3095 - Annotate circuits w/ whether they aim to contain high uptime nodes
3096 and/or high capacity nodes. When building circuits, choose
3098 - This means that every single node in an intro rend circuit,
3099 not just the last one, will have a minimum uptime.
3100 - New config option LongLivedPorts to indicate application streams
3101 that will want high uptime circuits.
3102 - Servers reset uptime when a dir fetch entirely fails. This
3103 hopefully reflects stability of the server's network connectivity.
3104 - If somebody starts his tor server in Jan 2004 and then fixes his
3105 clock, don't make his published uptime be a year.
3106 - Reset published uptime when you wake up from hibernation.
3107 - Introduce a notion of 'internal' circs, which are chosen without
3108 regard to the exit policy of the last hop. Intro and rendezvous
3109 circs must be internal circs, to avoid leaking information. Resolve
3110 and connect streams can use internal circs if they want.
3111 - New circuit pooling algorithm: make sure to have enough circs around
3112 to satisfy any predicted ports, and also make sure to have 2 internal
3113 circs around if we've required internal circs lately (and with high
3114 uptime if we've seen that lately too).
3115 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
3116 which describes how often we retry making new circuits if current
3117 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
3118 how long we're willing to make use of an already-dirty circuit.
3119 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
3120 circ as necessary, if there are any completed ones lying around
3121 when we try to launch one.
3122 - Make hidden services try to establish a rendezvous for 30 seconds,
3123 rather than for n (where n=3) attempts to build a circuit.
3124 - Change SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to a config option
3125 "ShutdownWaitLength".
3126 - Try to be more zealous about calling connection_edge_end when
3127 things go bad with edge conns in connection.c.
3128 - Revise tor-spec to add more/better stream end reasons.
3129 - Revise all calls to connection_edge_end to avoid sending "misc",
3130 and to take errno into account where possible.
3133 - Fix a race condition that can trigger an assert, when we have a
3134 pending create cell and an OR connection fails right then.
3135 - Fix several double-mark-for-close bugs, e.g. where we were finding
3136 a conn for a cell even if that conn is already marked for close.
3137 - Make sequence of log messages when starting on win32 with no config
3138 file more reasonable.
3139 - When choosing an exit node for a new non-internal circ, don't take
3140 into account whether it'll be useful for any pending x.onion
3141 addresses -- it won't.
3142 - Turn addr_policy_compare from a tristate to a quadstate; this should
3143 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
3144 for google.com" problem.
3145 - Make "platform" string in descriptor more accurate for Win32 servers,
3146 so it's not just "unknown platform".
3147 - Fix an edge case in parsing config options (thanks weasel).
3148 If they say "--" on the commandline, it's not an option.
3149 - Reject odd-looking addresses at the client (e.g. addresses that
3150 contain a colon), rather than having the server drop them because
3152 - tor-resolve requests were ignoring .exit if there was a working circuit
3153 they could use instead.
3154 - REUSEADDR on normal platforms means you can rebind to the port
3155 right after somebody else has let it go. But REUSEADDR on win32
3156 means to let you bind to the port _even when somebody else
3157 already has it bound_! So, don't do that on Win32.
3158 - Change version parsing logic: a version is "obsolete" if it is not
3159 recommended and (1) there is a newer recommended version in the
3160 same series, or (2) there are no recommended versions in the same
3161 series, but there are some recommended versions in a newer series.
3162 A version is "new" if it is newer than any recommended version in
3164 - Stop most cases of hanging up on a socks connection without sending
3168 - Require BandwidthRate to be at least 20kB/s for servers.
3169 - When a dirserver causes you to give a warn, mention which dirserver
3171 - New config option DirAllowPrivateAddresses for authdirservers.
3172 Now by default they refuse router descriptors that have non-IP or
3173 private-IP addresses.
3174 - Stop publishing socksport in the directory, since it's not
3175 actually meant to be public. For compatibility, publish a 0 there
3177 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
3178 smart" value, that is low for servers and high for clients.
3179 - If our clock jumps forward by 100 seconds or more, assume something
3180 has gone wrong with our network and abandon all not-yet-used circs.
3181 - Warn when exit policy implicitly allows local addresses.
3182 - If we get an incredibly skewed timestamp from a dirserver mirror
3183 that isn't a verified OR, don't warn -- it's probably him that's
3185 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
3186 cookies to disk and doesn't log each web request to disk. (Thanks
3187 to Brett Carrington for pointing this out.)
3188 - When a client asks us for a dir mirror and we don't have one,
3189 launch an attempt to get a fresh one.
3190 - If we're hibernating and we get a SIGINT, exit immediately.
3191 - Add --with-dmalloc ./configure option, to track memory leaks.
3192 - And try to free all memory on closing, so we can detect what
3194 - Cache local dns resolves correctly even when they're .exit
3196 - Give a better warning when some other server advertises an
3197 ORPort that is actually an apache running ssl.
3198 - Add "opt hibernating 1" to server descriptor to make it clearer
3199 whether the server is hibernating.
3202 Changes in version 0.0.9.6 - 2005-03-24
3203 o Bugfixes on 0.0.9.x (crashes and asserts):
3204 - Add new end stream reasons to maintainance branch. Fix bug where
3205 reason (8) could trigger an assert. Prevent bug from recurring.
3206 - Apparently win32 stat wants paths to not end with a slash.
3207 - Fix assert triggers in assert_cpath_layer_ok(), where we were
3208 blowing away the circuit that conn->cpath_layer points to, then
3209 checking to see if the circ is well-formed. Backport check to make
3210 sure we dont use the cpath on a closed connection.
3211 - Prevent circuit_resume_edge_reading_helper() from trying to package
3212 inbufs for marked-for-close streams.
3213 - Don't crash on hup if your options->address has become unresolvable.
3214 - Some systems (like OS X) sometimes accept() a connection and tell
3215 you the remote host is 0.0.0.0:0. If this happens, due to some
3216 other mis-features, we get confused; so refuse the conn for now.
3218 o Bugfixes on 0.0.9.x (other):
3219 - Fix harmless but scary "Unrecognized content encoding" warn message.
3220 - Add new stream error reason: TORPROTOCOL reason means "you are not
3221 speaking a version of Tor I understand; say bye-bye to your stream."
3222 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
3223 into the future, now that we are more tolerant of skew. This
3224 resolves a bug where a Tor server would refuse to cache a directory
3225 because all the directories it gets are too far in the future;
3226 yet the Tor server never logs any complaints about clock skew.
3227 - Mac packaging magic: make man pages useable, and do not overwrite
3228 existing torrc files.
3229 - Make OS X log happily to /var/log/tor/tor.log
3232 Changes in version 0.0.9.5 - 2005-02-22
3233 o Bugfixes on 0.0.9.x:
3234 - Fix an assert race at exit nodes when resolve requests fail.
3235 - Stop picking unverified dir mirrors--it only leads to misery.
3236 - Patch from Matt Edman to make NT services work better. Service
3237 support is still not compiled into the executable by default.
3238 - Patch from Dmitri Bely so the Tor service runs better under
3239 the win32 SYSTEM account.
3240 - Make tor-resolve actually work (?) on Win32.
3241 - Fix a sign bug when getrlimit claims to have 4+ billion
3242 file descriptors available.
3243 - Stop refusing to start when bandwidthburst == bandwidthrate.
3244 - When create cells have been on the onion queue more than five
3245 seconds, just send back a destroy and take them off the list.
3248 Changes in version 0.0.9.4 - 2005-02-03
3249 o Bugfixes on 0.0.9:
3250 - Fix an assert bug that took down most of our servers: when
3251 a server claims to have 1 GB of bandwidthburst, don't
3253 - Don't crash as badly if we have spawned the max allowed number
3254 of dnsworkers, or we're out of file descriptors.
3255 - Block more file-sharing ports in the default exit policy.
3256 - MaxConn is now automatically set to the hard limit of max
3257 file descriptors we're allowed (ulimit -n), minus a few for
3259 - Give a clearer message when servers need to raise their
3260 ulimit -n when they start running out of file descriptors.
3261 - SGI Compatibility patches from Jan Schaumann.
3262 - Tolerate a corrupt cached directory better.
3263 - When a dirserver hasn't approved your server, list which one.
3264 - Go into soft hibernation after 95% of the bandwidth is used,
3265 not 99%. This is especially important for daily hibernators who
3266 have a small accounting max. Hopefully it will result in fewer
3267 cut connections when the hard hibernation starts.
3268 - Load-balance better when using servers that claim more than
3269 800kB/s of capacity.
3270 - Make NT services work (experimental, only used if compiled in).
3273 Changes in version 0.0.9.3 - 2005-01-21
3274 o Bugfixes on 0.0.9:
3275 - Backport the cpu use fixes from main branch, so busy servers won't
3276 need as much processor time.
3277 - Work better when we go offline and then come back, or when we
3278 run Tor at boot before the network is up. We do this by
3279 optimistically trying to fetch a new directory whenever an
3280 application request comes in and we think we're offline -- the
3281 human is hopefully a good measure of when the network is back.
3282 - Backport some minimal hidserv bugfixes: keep rend circuits open as
3283 long as you keep using them; actually publish hidserv descriptors
3284 shortly after they change, rather than waiting 20-40 minutes.
3285 - Enable Mac startup script by default.
3286 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
3287 - When you update AllowUnverifiedNodes or FirewallPorts via the
3288 controller's setconf feature, we were always appending, never
3290 - When you update HiddenServiceDir via setconf, it was screwing up
3291 the order of reading the lines, making it fail.
3292 - Do not rewrite a cached directory back to the cache; otherwise we
3293 will think it is recent and not fetch a newer one on startup.
3294 - Workaround for webservers that lie about Content-Encoding: Tor
3295 now tries to autodetect compressed directories and compression
3296 itself. This lets us Proxypass dir fetches through apache.
3299 Changes in version 0.0.9.2 - 2005-01-04
3300 o Bugfixes on 0.0.9 (crashes and asserts):
3301 - Fix an assert on startup when the disk is full and you're logging
3303 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
3304 style address, then we'd crash.
3305 - Fix an assert trigger when the running-routers string we get from
3306 a dirserver is broken.
3307 - Make worker threads start and run on win32. Now win32 servers
3309 - Bandaid (not actually fix, but now it doesn't crash) an assert
3310 where the dns worker dies mysteriously and the main Tor process
3311 doesn't remember anything about the address it was resolving.
3313 o Bugfixes on 0.0.9 (Win32):
3314 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
3315 name out of the warning/assert messages.
3316 - Fix a superficial "unhandled error on read" bug on win32.
3317 - The win32 installer no longer requires a click-through for our
3318 license, since our Free Software license grants rights but does not
3320 - Win32: When connecting to a dirserver fails, try another one
3321 immediately. (This was already working for non-win32 Tors.)
3322 - Stop trying to parse $HOME on win32 when hunting for default
3324 - Make tor-resolve.c work on win32 by calling network_init().
3326 o Bugfixes on 0.0.9 (other):
3327 - Make 0.0.9.x build on Solaris again.
3328 - Due to a fencepost error, we were blowing away the \n when reporting
3329 confvalue items in the controller. So asking for multiple config
3330 values at once couldn't work.
3331 - When listing circuits that are pending on an opening OR connection,
3332 if we're an OR we were listing circuits that *end* at us as
3333 being pending on every listener, dns/cpu worker, etc. Stop that.
3334 - Dirservers were failing to create 'running-routers' or 'directory'
3335 strings if we had more than some threshold of routers. Fix them so
3336 they can handle any number of routers.
3337 - Fix a superficial "Duplicate mark for close" bug.
3338 - Stop checking for clock skew for OR connections, even for servers.
3339 - Fix a fencepost error that was chopping off the last letter of any
3340 nickname that is the maximum allowed nickname length.
3341 - Update URLs in log messages so they point to the new website.
3342 - Fix a potential problem in mangling server private keys while
3343 writing to disk (not triggered yet, as far as we know).
3344 - Include the licenses for other free software we include in Tor,
3345 now that we're shipping binary distributions more regularly.
3348 Changes in version 0.0.9.1 - 2004-12-15
3349 o Bugfixes on 0.0.9:
3350 - Make hibernation actually work.
3351 - Make HashedControlPassword config option work.
3352 - When we're reporting event circuit status to a controller,
3353 don't use the stream status code.
3356 Changes in version 0.0.9 - 2004-12-12
3358 - Clean up manpage and torrc.sample file.
3359 - Clean up severities and text of log warnings.
3361 - Make servers trigger an assert when they enter hibernation.
3364 Changes in version 0.0.9rc7 - 2004-12-08
3365 o Bugfixes on 0.0.9rc:
3366 - Fix a stack-trashing crash when an exit node begins hibernating.
3367 - Avoid looking at unallocated memory while considering which
3368 ports we need to build circuits to cover.
3369 - Stop a sigpipe: when an 'end' cell races with eof from the app,
3370 we shouldn't hold-open-until-flush if the eof arrived first.
3371 - Fix a bug with init_cookie_authentication() in the controller.
3372 - When recommending new-format log lines, if the upper bound is
3373 LOG_ERR, leave it implicit.
3375 o Bugfixes on 0.0.8.1:
3376 - Fix a whole slew of memory leaks.
3377 - Fix isspace() and friends so they still make Solaris happy
3378 but also so they don't trigger asserts on win32.
3379 - Fix parse_iso_time on platforms without strptime (eg win32).
3380 - win32: tolerate extra "readable" events better.
3381 - win32: when being multithreaded, leave parent fdarray open.
3382 - Make unit tests work on win32.
3385 Changes in version 0.0.9rc6 - 2004-12-06
3386 o Bugfixes on 0.0.9pre:
3387 - Clean up some more integer underflow opportunities (not exploitable
3389 - While hibernating, hup should not regrow our listeners.
3390 - Send an end to the streams we close when we hibernate, rather
3391 than just chopping them off.
3392 - React to eof immediately on non-open edge connections.
3394 o Bugfixes on 0.0.8.1:
3395 - Calculate timeout for waiting for a connected cell from the time
3396 we sent the begin cell, not from the time the stream started. If
3397 it took a long time to establish the circuit, we would time out
3398 right after sending the begin cell.
3399 - Fix router_compare_addr_to_addr_policy: it was not treating a port
3400 of * as always matching, so we were picking reject *:* nodes as
3401 exit nodes too. Oops.
3404 - New circuit building strategy: keep a list of ports that we've
3405 used in the past 6 hours, and always try to have 2 circuits open
3406 or on the way that will handle each such port. Seed us with port
3407 80 so web users won't complain that Tor is "slow to start up".
3408 - Make kill -USR1 dump more useful stats about circuits.
3409 - When warning about retrying or giving up, print the address, so
3410 the user knows which one it's talking about.
3411 - If you haven't used a clean circuit in an hour, throw it away,
3412 just to be on the safe side. (This means after 6 hours a totally
3413 unused Tor client will have no circuits open.)
3416 Changes in version 0.0.9rc5 - 2004-12-01
3417 o Bugfixes on 0.0.8.1:
3418 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
3419 - Let resolve conns retry/expire also, rather than sticking around
3421 - If we are using select, make sure we stay within FD_SETSIZE.
3423 o Bugfixes on 0.0.9pre:
3424 - Fix integer underflow in tor_vsnprintf() that may be exploitable,
3425 but doesn't seem to be currently; thanks to Ilja van Sprundel for
3427 - If anybody set DirFetchPostPeriod, give them StatusFetchPeriod
3428 instead. Impose minima and maxima for all *Period options; impose
3429 even tighter maxima for fetching if we are a caching dirserver.
3430 Clip rather than rejecting.
3431 - Fetch cached running-routers from servers that serve it (that is,
3432 authdirservers and servers running 0.0.9rc5-cvs or later.)
3435 - Accept *:706 (silc) in default exit policy.
3436 - Implement new versioning format for post 0.1.
3437 - Support "foo.nickname.exit" addresses, to let Alice request the
3438 address "foo" as viewed by exit node "nickname". Based on a patch
3440 - Make tor --version --version dump the cvs Id of every file.
3443 Changes in version 0.0.9rc4 - 2004-11-28
3444 o Bugfixes on 0.0.8.1:
3445 - Make windows sockets actually non-blocking (oops), and handle
3446 win32 socket errors better.
3448 o Bugfixes on 0.0.9rc1:
3449 - Actually catch the -USR2 signal.
3452 Changes in version 0.0.9rc3 - 2004-11-25
3453 o Bugfixes on 0.0.8.1:
3454 - Flush the log file descriptor after we print "Tor opening log file",
3455 so we don't see those messages days later.
3457 o Bugfixes on 0.0.9rc1:
3458 - Make tor-resolve work again.
3459 - Avoid infinite loop in tor-resolve if tor hangs up on it.
3460 - Fix an assert trigger for clients/servers handling resolves.
3463 Changes in version 0.0.9rc2 - 2004-11-24
3464 o Bugfixes on 0.0.9rc1:
3465 - I broke socks5 support while fixing the eof bug.
3466 - Allow unitless bandwidths and intervals; they default to bytes
3468 - New servers don't start out hibernating; they are active until
3469 they run out of bytes, so they have a better estimate of how
3470 long it takes, and so their operators can know they're working.
3473 Changes in version 0.0.9rc1 - 2004-11-23
3474 o Bugfixes on 0.0.8.1:
3475 - Finally fix a bug that's been plaguing us for a year:
3476 With high load, circuit package window was reaching 0. Whenever
3477 we got a circuit-level sendme, we were reading a lot on each
3478 socket, but only writing out a bit. So we would eventually reach
3479 eof. This would be noticed and acted on even when there were still
3480 bytes sitting in the inbuf.
3481 - When poll() is interrupted, we shouldn't believe the revents values.
3483 o Bugfixes on 0.0.9pre6:
3484 - Fix hibernate bug that caused pre6 to be broken.
3485 - Don't keep rephist info for routers that haven't had activity for
3486 24 hours. (This matters now that clients have keys, since we track
3488 - Never call close_temp_logs while validating log options.
3489 - Fix backslash-escaping on tor.sh.in and torctl.in.
3492 - Implement weekly/monthly/daily accounting: now you specify your
3493 hibernation properties by
3494 AccountingMax N bytes|KB|MB|GB|TB
3495 AccountingStart day|week|month [day] HH:MM
3496 Defaults to "month 1 0:00".
3497 - Let bandwidth and interval config options be specified as 5 bytes,
3498 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
3499 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
3500 get back to normal.)
3501 - If your requested entry or exit node has advertised bandwidth 0,
3503 - Be more greedy about filling up relay cells -- we try reading again
3504 once we've processed the stuff we read, in case enough has arrived
3505 to fill the last cell completely.
3506 - Apply NT service patch from Osamu Fujino. Still needs more work.
3509 Changes in version 0.0.9pre6 - 2004-11-15
3510 o Bugfixes on 0.0.8.1:
3511 - Fix assert failure on malformed socks4a requests.
3512 - Use identity comparison, not nickname comparison, to choose which
3513 half of circuit-ID-space each side gets to use. This is needed
3514 because sometimes we think of a router as a nickname, and sometimes
3515 as a hex ID, and we can't predict what the other side will do.
3516 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
3517 write() call will fail and we handle it there.
3518 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
3519 and smartlist_len, which are two major profiling offenders.
3521 o Bugfixes on 0.0.9pre5:
3522 - Fix a bug in read_all that was corrupting config files on windows.
3523 - When we're raising the max number of open file descriptors to
3524 'unlimited', don't log that we just raised it to '-1'.
3525 - Include event code with events, as required by control-spec.txt.
3526 - Don't give a fingerprint when clients do --list-fingerprint:
3527 it's misleading, because it will never be the same again.
3528 - Stop using strlcpy in tor_strndup, since it was slowing us
3530 - Remove warn on startup about missing cached-directory file.
3531 - Make kill -USR1 work again.
3532 - Hibernate if we start tor during the "wait for wakeup-time" phase
3533 of an accounting interval. Log our hibernation plans better.
3534 - Authoritative dirservers now also cache their directory, so they
3535 have it on start-up.
3538 - Fetch running-routers; cache running-routers; compress
3539 running-routers; serve compressed running-routers.z
3540 - Add NSI installer script contributed by J Doe.
3541 - Commit VC6 and VC7 workspace/project files.
3542 - Commit a tor.spec for making RPM files, with help from jbash.
3543 - Add contrib/torctl.in contributed by Glenn Fink.
3544 - Implement the control-spec's SAVECONF command, to write your
3545 configuration to torrc.
3546 - Get cookie authentication for the controller closer to working.
3547 - Include control-spec.txt in the tarball.
3548 - When set_conf changes our server descriptor, upload a new copy.
3549 But don't upload it too often if there are frequent changes.
3550 - Document authentication config in man page, and document signals
3552 - Clean up confusing parts of man page and torrc.sample.
3553 - Make expand_filename handle ~ and ~username.
3554 - Use autoconf to enable largefile support where necessary. Use
3555 ftello where available, since ftell can fail at 2GB.
3556 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
3557 log more informatively.
3558 - Give a slightly more useful output for "tor -h".
3559 - Refuse application socks connections to port 0.
3560 - Check clock skew for verified servers, but allow unverified
3561 servers and clients to have any clock skew.
3562 - Break DirFetchPostPeriod into:
3563 - DirFetchPeriod for fetching full directory,
3564 - StatusFetchPeriod for fetching running-routers,
3565 - DirPostPeriod for posting server descriptor,
3566 - RendPostPeriod for posting hidden service descriptors.
3567 - Make sure the hidden service descriptors are at a random offset
3568 from each other, to hinder linkability.
3571 Changes in version 0.0.9pre5 - 2004-11-09
3572 o Bugfixes on 0.0.9pre4:
3573 - Fix a seg fault in unit tests (doesn't affect main program).
3574 - Fix an assert bug where a hidden service provider would fail if
3575 the first hop of his rendezvous circuit was down.
3576 - Hidden service operators now correctly handle version 1 style
3577 INTRODUCE1 cells (nobody generates them still, so not a critical
3579 - If do_hup fails, actually notice.
3580 - Handle more errnos from accept() without closing the listener.
3581 Some OpenBSD machines were closing their listeners because
3582 they ran out of file descriptors.
3583 - Send resolve cells to exit routers that are running a new
3584 enough version of the resolve code to work right.
3585 - Better handling of winsock includes on non-MSV win32 compilers.
3586 - Some people had wrapped their tor client/server in a script
3587 that would restart it whenever it died. This did not play well
3588 with our "shut down if your version is obsolete" code. Now people
3589 don't fetch a new directory if their local cached version is
3591 - Make our autogen.sh work on ksh as well as bash.
3594 - Hibernation: New config option "AccountingMaxKB" lets you
3595 set how many KBytes per month you want to allow your server to
3596 consume. Rather than spreading those bytes out evenly over the
3597 month, we instead hibernate for some of the month and pop up
3598 at a deterministic time, work until the bytes are consumed, then
3599 hibernate again. Config option "MonthlyAccountingStart" lets you
3600 specify which day of the month your billing cycle starts on.
3601 - Control interface: a separate program can now talk to your
3602 client/server over a socket, and get/set config options, receive
3603 notifications of circuits and streams starting/finishing/dying,
3604 bandwidth used, etc. The next step is to get some GUIs working.
3605 Let us know if you want to help out. See doc/control-spec.txt .
3606 - Ship a contrib/tor-control.py as an example script to interact
3607 with the control port.
3608 - "tor --hash-password zzyxz" will output a salted password for
3609 use in authenticating to the control interface.
3610 - New log format in config:
3611 "Log minsev[-maxsev] stdout|stderr|syslog" or
3612 "Log minsev[-maxsev] file /var/foo"
3615 - DirPolicy config option, to let people reject incoming addresses
3616 from their dirserver.
3617 - "tor --list-fingerprint" will list your identity key fingerprint
3619 - Add "pass" target for RedirectExit, to make it easier to break
3620 out of a sequence of RedirectExit rules.
3621 - Clients now generate a TLS cert too, in preparation for having
3622 them act more like real nodes.
3623 - Ship src/win32/ in the tarball, so people can use it to build.
3624 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
3626 - New "router-status" line in directory, to better bind each verified
3627 nickname to its identity key.
3628 - Deprecate unofficial config option abbreviations, and abbreviations
3629 not on the command line.
3630 - Add a pure-C tor-resolve implementation.
3631 - Use getrlimit and friends to ensure we can reach MaxConn (currently
3632 1024) file descriptors.
3634 o Code security improvements, inspired by Ilja:
3635 - Replace sprintf with snprintf. (I think they were all safe, but
3637 - Replace strcpy/strncpy with strlcpy in more places.
3638 - Avoid strcat; use snprintf or strlcat instead.
3639 - snprintf wrapper with consistent (though not C99) overflow behavior.
3642 Changes in version 0.0.9pre4 - 2004-10-17
3643 o Bugfixes on 0.0.9pre3:
3644 - If the server doesn't specify an exit policy, use the real default
3645 exit policy, not reject *:*.
3646 - Ignore fascistfirewall when uploading/downloading hidden service
3647 descriptors, since we go through Tor for those; and when using
3648 an HttpProxy, since we assume it can reach them all.
3649 - When looking for an authoritative dirserver, use only the ones
3650 configured at boot. Don't bother looking in the directory.
3651 - The rest of the fix for get_default_conf_file() on older win32.
3652 - Make 'Routerfile' config option obsolete.
3655 - New 'MyFamily nick1,...' config option for a server to
3656 specify other servers that shouldn't be used in the same circuit
3657 with it. Only believed if nick1 also specifies us.
3658 - New 'NodeFamily nick1,nick2,...' config option for a client to
3659 specify nodes that it doesn't want to use in the same circuit.
3660 - New 'Redirectexit pattern address:port' config option for a
3661 server to redirect exit connections, e.g. to a local squid.
3664 Changes in version 0.0.9pre3 - 2004-10-13
3665 o Bugfixes on 0.0.8.1:
3666 - Better torrc example lines for dirbindaddress and orbindaddress.
3667 - Improved bounds checking on parsed ints (e.g. config options and
3668 the ones we find in directories.)
3669 - Better handling of size_t vs int, so we're more robust on 64
3671 - Fix the rest of the bug where a newly started OR would appear
3672 as unverified even after we've added his fingerprint and hupped
3674 - Fix a bug from 0.0.7: when read() failed on a stream, we would
3675 close it without sending back an end. So 'connection refused'
3676 would simply be ignored and the user would get no response.
3678 o Bugfixes on 0.0.9pre2:
3679 - Serving the cached-on-disk directory to people is bad. We now
3680 provide no directory until we've fetched a fresh one.
3681 - Workaround for bug on windows where cached-directories get crlf
3683 - Make get_default_conf_file() work on older windows too.
3684 - If we write a *:* exit policy line in the descriptor, don't write
3685 any more exit policy lines.
3688 - Use only 0.0.9pre1 and later servers for resolve cells.
3689 - Make the dirservers file obsolete.
3690 - Include a dir-signing-key token in directories to tell the
3691 parsing entity which key is being used to sign.
3692 - Remove the built-in bulky default dirservers string.
3693 - New config option "Dirserver %s:%d [fingerprint]", which can be
3694 repeated as many times as needed. If no dirservers specified,
3695 default to moria1,moria2,tor26.
3696 - Make moria2 advertise a dirport of 80, so people behind firewalls
3697 will be able to get a directory.
3698 - Http proxy support
3699 - Dirservers translate requests for http://%s:%d/x to /x
3700 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
3701 be routed through this host.
3702 - Clients ask for /tor/x rather than /x for new enough dirservers.
3703 This way we can one day coexist peacefully with apache.
3704 - Clients specify a "Host: %s%d" http header, to be compatible
3705 with more proxies, and so running squid on an exit node can work.
3708 Changes in version 0.0.8.1 - 2004-10-13
3710 - Fix a seg fault that can be triggered remotely for Tor
3711 clients/servers with an open dirport.
3712 - Fix a rare assert trigger, where routerinfos for entries in
3713 our cpath would expire while we're building the path.
3714 - Fix a bug in OutboundBindAddress so it (hopefully) works.
3715 - Fix a rare seg fault for people running hidden services on
3716 intermittent connections.
3717 - Fix a bug in parsing opt keywords with objects.
3718 - Fix a stale pointer assert bug when a stream detaches and
3720 - Fix a string format vulnerability (probably not exploitable)
3721 in reporting stats locally.
3722 - Fix an assert trigger: sometimes launching circuits can fail
3723 immediately, e.g. because too many circuits have failed recently.
3724 - Fix a compile warning on 64 bit platforms.
3727 Changes in version 0.0.9pre2 - 2004-10-03
3729 - Make fetching a cached directory work for 64-bit platforms too.
3730 - Make zlib.h a required header, not an optional header.
3733 Changes in version 0.0.9pre1 - 2004-10-01
3735 - Stop using separate defaults for no-config-file and
3736 empty-config-file. Now you have to explicitly turn off SocksPort,
3737 if you don't want it open.
3738 - Fix a bug in OutboundBindAddress so it (hopefully) works.
3739 - Improve man page to mention more of the 0.0.8 features.
3740 - Fix a rare seg fault for people running hidden services on
3741 intermittent connections.
3742 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
3744 - Fix more dns related bugs: send back resolve_failed and end cells
3745 more reliably when the resolve fails, rather than closing the
3746 circuit and then trying to send the cell. Also attach dummy resolve
3747 connections to a circuit *before* calling dns_resolve(), to fix
3748 a bug where cached answers would never be sent in RESOLVED cells.
3749 - When we run out of disk space, or other log writing error, don't
3750 crash. Just stop logging to that log and continue.
3751 - We were starting to daemonize before we opened our logs, so if
3752 there were any problems opening logs, we would complain to stderr,
3753 which wouldn't work, and then mysteriously exit.
3754 - Fix a rare bug where sometimes a verified OR would connect to us
3755 before he'd uploaded his descriptor, which would cause us to
3756 assign conn->nickname as though he's unverified. Now we look through
3757 the fingerprint list to see if he's there.
3758 - Fix a rare assert trigger, where routerinfos for entries in
3759 our cpath would expire while we're building the path.
3762 - Clients can ask dirservers for /dir.z to get a compressed version
3763 of the directory. Only works for servers running 0.0.9, of course.
3764 - Make clients cache directories and use them to seed their router
3765 lists at startup. This means clients have a datadir again.
3766 - Configuration infrastructure support for warning on obsolete
3768 - Respond to content-encoding headers by trying to uncompress as
3770 - Reply with a deflated directory when a client asks for "dir.z".
3771 We could use allow-encodings instead, but allow-encodings isn't
3772 specified in HTTP 1.0.
3773 - Raise the max dns workers from 50 to 100.
3774 - Discourage people from setting their dirfetchpostperiod more often
3775 than once per minute.
3776 - Protect dirservers from overzealous descriptor uploading -- wait
3777 10 seconds after directory gets dirty, before regenerating.
3780 Changes in version 0.0.8 - 2004-08-25
3781 o Port it to SunOS 5.9 / Athena
3784 Changes in version 0.0.8rc2 - 2004-08-20
3785 o Make it compile on cygwin again.
3786 o When picking unverified routers, skip those with low uptime and/or
3787 low bandwidth, depending on what properties you care about.
3790 Changes in version 0.0.8rc1 - 2004-08-18
3791 o Changes from 0.0.7.3:
3793 - Fix assert triggers: if the other side returns an address 0.0.0.0,
3794 don't put it into the client dns cache.
3795 - If a begin failed due to exit policy, but we believe the IP address
3796 should have been allowed, switch that router to exitpolicy reject *:*
3797 until we get our next directory.
3799 - Clients choose nodes proportional to advertised bandwidth.
3800 - Avoid using nodes with low uptime as introduction points.
3801 - Handle servers with dynamic IP addresses: don't replace
3802 options->Address with the resolved one at startup, and
3803 detect our address right before we make a routerinfo each time.
3804 - 'FascistFirewall' option to pick dirservers and ORs on specific
3805 ports; plus 'FirewallPorts' config option to tell FascistFirewall
3806 which ports are open. (Defaults to 80,443)
3807 - Be more aggressive about trying to make circuits when the network
3808 has changed (e.g. when you unsuspend your laptop).
3809 - Check for time skew on http headers; report date in response to
3811 - If the entrynode config line has only one node, don't pick it as
3813 - Add strict{entry|exit}nodes config options. If set to 1, then
3814 we refuse to build circuits that don't include the specified entry
3816 - OutboundBindAddress config option, to bind to a specific
3817 IP address for outgoing connect()s.
3818 - End truncated log entries (e.g. directories) with "[truncated]".
3820 o Patches to 0.0.8preX:
3822 - Patches to compile and run on win32 again (maybe)?
3823 - Fix crash when looking for ~/.torrc with no $HOME set.
3824 - Fix a race bug in the unit tests.
3825 - Handle verified/unverified name collisions better when new
3826 routerinfo's arrive in a directory.
3827 - Sometimes routers were getting entered into the stats before
3828 we'd assigned their identity_digest. Oops.
3829 - Only pick and establish intro points after we've gotten a
3832 - AllowUnverifiedNodes config option to let circuits choose no-name
3833 routers in entry,middle,exit,introduction,rendezvous positions.
3834 Allow middle and rendezvous positions by default.
3835 - Add a man page for tor-resolve.
3838 Changes in version 0.0.7.3 - 2004-08-12
3839 o Stop dnsworkers from triggering an assert failure when you
3840 ask them to resolve the host "".
3843 Changes in version 0.0.8pre3 - 2004-08-09
3844 o Changes from 0.0.7.2:
3845 - Allow multiple ORs with same nickname in routerlist -- now when
3846 people give us one identity key for a nickname, then later
3847 another, we don't constantly complain until the first expires.
3848 - Remember used bandwidth (both in and out), and publish 15-minute
3849 snapshots for the past day into our descriptor.
3850 - You can now fetch $DIRURL/running-routers to get just the
3851 running-routers line, not the whole descriptor list. (But
3852 clients don't use this yet.)
3853 - When people mistakenly use Tor as an http proxy, point them
3854 at the tor-doc.html rather than the INSTALL.
3855 - Remove our mostly unused -- and broken -- hex_encode()
3856 function. Use base16_encode() instead. (Thanks to Timo Lindfors
3857 for pointing out this bug.)
3858 - Rotate onion keys every 12 hours, not every 2 hours, so we have
3859 fewer problems with people using the wrong key.
3860 - Change the default exit policy to reject the default edonkey,
3861 kazaa, gnutella ports.
3862 - Add replace_file() to util.[ch] to handle win32's rename().
3864 o Changes from 0.0.8preX:
3865 - Fix two bugs in saving onion keys to disk when rotating, so
3866 hopefully we'll get fewer people using old onion keys.
3867 - Fix an assert error that was making SocksPolicy not work.
3868 - Be willing to expire routers that have an open dirport -- it's
3869 just the authoritative dirservers we want to not forget.
3870 - Reject tor-resolve requests for .onion addresses early, so we
3871 don't build a whole rendezvous circuit and then fail.
3872 - When you're warning a server that he's unverified, don't cry
3874 - Fix a race condition: don't try to extend onto a connection
3875 that's still handshaking.
3876 - For servers in clique mode, require the conn to be open before
3877 you'll choose it for your path.
3878 - Fix some cosmetic bugs about duplicate mark-for-close, lack of
3879 end relay cell, etc.
3880 - Measure bandwidth capacity over the last 24 hours, not just 12
3881 - Bugfix: authoritative dirservers were making and signing a new
3882 directory for each client, rather than reusing the cached one.
3885 Changes in version 0.0.8pre2 - 2004-08-04
3886 o Changes from 0.0.7.2:
3888 - Check directory signature _before_ you decide whether you're
3889 you're running an obsolete version and should exit.
3890 - Check directory signature _before_ you parse the running-routers
3891 list to decide who's running or verified.
3892 - Bugfixes and features:
3893 - Check return value of fclose while writing to disk, so we don't
3894 end up with broken files when servers run out of disk space.
3895 - Log a warning if the user uses an unsafe socks variant, so people
3896 are more likely to learn about privoxy or socat.
3897 - Dirservers now include RFC1123-style dates in the HTTP headers,
3898 which one day we will use to better detect clock skew.
3900 o Changes from 0.0.8pre1:
3901 - Make it compile without warnings again on win32.
3902 - Log a warning if you're running an unverified server, to let you
3903 know you might want to get it verified.
3904 - Only pick a default nickname if you plan to be a server.
3907 Changes in version 0.0.8pre1 - 2004-07-23
3909 - Made our unit tests compile again on OpenBSD 3.5, and tor
3910 itself compile again on OpenBSD on a sparc64.
3911 - We were neglecting milliseconds when logging on win32, so
3912 everything appeared to happen at the beginning of each second.
3915 - 'Extend' relay cell payloads now include the digest of the
3916 intended next hop's identity key. Now we can verify that we're
3917 extending to the right router, and also extend to routers we
3918 hadn't heard of before.
3921 - Tor nodes can now act as relays (with an advertised ORPort)
3922 without being manually verified by the dirserver operators.
3923 - Uploaded descriptors of unverified routers are now accepted
3924 by the dirservers, and included in the directory.
3925 - Verified routers are listed by nickname in the running-routers
3926 list; unverified routers are listed as "$<fingerprint>".
3927 - We now use hash-of-identity-key in most places rather than
3928 nickname or addr:port, for improved security/flexibility.
3929 - To avoid Sybil attacks, paths still use only verified servers.
3930 But now we have a chance to play around with hybrid approaches.
3931 - Nodes track bandwidth usage to estimate capacity (not used yet).
3932 - ClientOnly option for nodes that never want to become servers.
3933 - Directory caching.
3934 - "AuthoritativeDir 1" option for the official dirservers.
3935 - Now other nodes (clients and servers) will cache the latest
3936 directory they've pulled down.
3937 - They can enable their DirPort to serve it to others.
3938 - Clients will pull down a directory from any node with an open
3939 DirPort, and check the signature/timestamp correctly.
3940 - Authoritative dirservers now fetch directories from other
3941 authdirservers, to stay better synced.
3942 - Running-routers list tells who's down also, along with noting
3943 if they're verified (listed by nickname) or unverified (listed
3945 - Allow dirservers to serve running-router list separately.
3946 This isn't used yet.
3947 - ORs connect-on-demand to other ORs
3948 - If you get an extend cell to an OR you're not connected to,
3949 connect, handshake, and forward the create cell.
3950 - The authoritative dirservers stay connected to everybody,
3951 and everybody stays connected to 0.0.7 servers, but otherwise
3952 clients/servers expire unused connections after 5 minutes.
3953 - When servers get a sigint, they delay 30 seconds (refusing new
3954 connections) then exit. A second sigint causes immediate exit.
3955 - File and name management:
3956 - Look for .torrc if no CONFDIR "torrc" is found.
3957 - If no datadir is defined, then choose, make, and secure ~/.tor
3959 - If torrc not found, exitpolicy reject *:*.
3960 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
3961 - If no nickname is defined, derive default from hostname.
3962 - Rename secret key files, e.g. identity.key -> secret_id_key,
3963 to discourage people from mailing their identity key to tor-ops.
3964 - Refuse to build a circuit before the directory has arrived --
3965 it won't work anyway, since you won't know the right onion keys
3967 - Try other dirservers immediately if the one you try is down. This
3968 should tolerate down dirservers better now.
3969 - Parse tor version numbers so we can do an is-newer-than check
3970 rather than an is-in-the-list check.
3971 - New socks command 'resolve', to let us shim gethostbyname()
3973 - A 'tor_resolve' script to access the socks resolve functionality.
3974 - A new socks-extensions.txt doc file to describe our
3975 interpretation and extensions to the socks protocols.
3976 - Add a ContactInfo option, which gets published in descriptor.
3977 - Publish OR uptime in descriptor (and thus in directory) too.
3978 - Write tor version at the top of each log file
3979 - New docs in the tarball:
3981 - Document that you should proxy your SSL traffic too.
3984 Changes in version 0.0.7.2 - 2004-07-07
3985 o A better fix for the 0.0.0.0 problem, that will hopefully
3986 eliminate the remaining related assertion failures.
3989 Changes in version 0.0.7.1 - 2004-07-04
3990 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
3991 since internally we use 0.0.0.0 to signify "not yet resolved".
3994 Changes in version 0.0.7 - 2004-06-07
3995 o Updated the man page to reflect the new features.
3998 Changes in version 0.0.7rc2 - 2004-06-06
3999 o Changes from 0.0.7rc1:
4000 - Make it build on Win32 again.
4001 o Changes from 0.0.6.2:
4002 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
4006 Changes in version 0.0.7rc1 - 2004-06-02
4008 - On sighup, we were adding another log without removing the first
4009 one. So log messages would get duplicated n times for n sighups.
4010 - Several cases of using a connection after we'd freed it. The
4011 problem was that connections that are pending resolve are in both
4012 the pending_resolve tree, and also the circuit's resolving_streams
4013 list. When you want to remove one, you must remove it from both.
4014 - Fix a double-mark-for-close where an end cell arrived for a
4015 resolving stream, and then the resolve failed.
4016 - Check directory signatures based on name of signer, not on whom
4017 we got the directory from. This will let us cache directories more
4020 - Crank up some of our constants to handle more users.
4023 Changes in version 0.0.7pre1 - 2004-06-02
4024 o Fixes for crashes and other obnoxious bugs:
4025 - Fix an epipe bug: sometimes when directory connections failed
4026 to connect, we would give them a chance to flush before closing
4028 - When we detached from a circuit because of resolvefailed, we
4029 would immediately try the same circuit twice more, and then
4030 give up on the resolve thinking we'd tried three different
4032 - Limit the number of intro circuits we'll attempt to build for a
4033 hidden service per 15-minute period.
4034 - Check recommended-software string *early*, before actually parsing
4035 the directory. Thus we can detect an obsolete version and exit,
4036 even if the new directory format doesn't parse.
4037 o Fixes for security bugs:
4038 - Remember which nodes are dirservers when you startup, and if a
4039 random OR enables his dirport, don't automatically assume he's
4040 a trusted dirserver.
4042 - Directory connections were asking the wrong poll socket to
4043 start writing, and not asking themselves to start writing.
4044 - When we detached from a circuit because we sent a begin but
4045 didn't get a connected, we would use it again the first time;
4046 but after that we would correctly switch to a different one.
4047 - Stop warning when the first onion decrypt attempt fails; they
4048 will sometimes legitimately fail now that we rotate keys.
4049 - Override unaligned-access-ok check when $host_cpu is ia64 or
4050 arm. Apparently they allow it but the kernel whines.
4051 - Dirservers try to reconnect periodically too, in case connections
4053 - Fix some memory leaks in directory servers.
4054 - Allow backslash in Win32 filenames.
4055 - Made Tor build complain-free on FreeBSD, hopefully without
4056 breaking other BSD builds. We'll see.
4058 - Doxygen markup on all functions and global variables.
4059 - Make directory functions update routerlist, not replace it. So
4060 now directory disagreements are not so critical a problem.
4061 - Remove the upper limit on number of descriptors in a dirserver's
4062 directory (not that we were anywhere close).
4063 - Allow multiple logfiles at different severity ranges.
4064 - Allow *BindAddress to specify ":port" rather than setting *Port
4065 separately. Allow multiple instances of each BindAddress config
4066 option, so you can bind to multiple interfaces if you want.
4067 - Allow multiple exit policy lines, which are processed in order.
4068 Now we don't need that huge line with all the commas in it.
4069 - Enable accept/reject policies on SOCKS connections, so you can bind
4070 to 0.0.0.0 but still control who can use your OP.
4073 Changes in version 0.0.6.2 - 2004-05-16
4074 o Our integrity-checking digest was checking only the most recent cell,
4075 not the previous cells like we'd thought.
4076 Thanks to Stefan Mark for finding the flaw!
4079 Changes in version 0.0.6.1 - 2004-05-06
4080 o Fix two bugs in our AES counter-mode implementation (this affected
4081 onion-level stream encryption, but not TLS-level). It turns
4082 out we were doing something much more akin to a 16-character
4083 polyalphabetic cipher. Oops.
4084 Thanks to Stefan Mark for finding the flaw!
4085 o Retire moria3 as a directory server, and add tor26 as a directory
4089 Changes in version 0.0.6 - 2004-05-02
4093 Changes in version 0.0.6rc4 - 2004-05-01
4094 o Update the built-in dirservers list to use the new directory format
4095 o Fix a rare seg fault: if a node offering a hidden service attempts
4096 to build a circuit to Alice's rendezvous point and fails before it
4097 reaches the last hop, it retries with a different circuit, but
4099 o Handle windows socket errors correctly.
4102 Changes in version 0.0.6rc3 - 2004-04-28
4103 o Don't expire non-general excess circuits (if we had enough
4104 circuits open, we were expiring rendezvous circuits -- even
4105 when they had a stream attached. oops.)
4106 o Fetch randomness from /dev/urandom better (not via fopen/fread)
4107 o Better debugging for tls errors
4108 o Some versions of openssl have an SSL_pending function that erroneously
4109 returns bytes when there is a non-application record pending.
4110 o Set Content-Type on the directory and hidserv descriptor.
4111 o Remove IVs from cipher code, since AES-ctr has none.
4112 o Win32 fixes. Tor now compiles on win32 with no warnings/errors.
4113 o We were using an array of length zero in a few places.
4114 o win32's gethostbyname can't resolve an IP to an IP.
4115 o win32's close can't close a socket.
4118 Changes in version 0.0.6rc2 - 2004-04-26
4119 o Fix a bug where we were closing tls connections intermittently.
4120 It turns out openssl keeps its errors around -- so if an error
4121 happens, and you don't ask about it, and then another openssl
4122 operation happens and succeeds, and you ask if there was an error,
4123 it tells you about the first error. Fun fun.
4124 o Fix a bug that's been lurking since 27 may 03 (!)
4125 When passing back a destroy cell, we would use the wrong circ id.
4126 'Mostly harmless', but still worth fixing.
4127 o Since we don't support truncateds much, don't bother sending them;
4128 just close the circ.
4129 o check for <machine/limits.h> so we build on NetBSD again (I hope).
4130 o don't crash if a conn that sent a begin has suddenly lost its circuit
4131 (this was quite rare).
4134 Changes in version 0.0.6rc1 - 2004-04-25
4135 o We now rotate link (tls context) keys and onion keys.
4136 o CREATE cells now include oaep padding, so you can tell
4137 if you decrypted them correctly.
4138 o Add bandwidthburst to server descriptor.
4139 o Directories now say which dirserver signed them.
4140 o Use a tor_assert macro that logs failed assertions too.
4143 Changes in version 0.0.6pre5 - 2004-04-18
4144 o changes from 0.0.6pre4:
4145 - make tor build on broken freebsd 5.2 installs
4146 - fix a failed assert when you try an intro point, get a nack, and try
4147 a second one and it works.
4148 - when alice uses a port that the hidden service doesn't accept,
4149 it now sends back an end cell (denied by exit policy). otherwise
4150 alice would just have to wait to time out.
4151 - fix another rare bug: when we had tried all the intro
4152 points for a hidden service, we fetched the descriptor
4153 again, but we left our introcirc thinking it had already
4154 sent an intro, so it kept waiting for a response...
4155 - bugfix: when you sleep your hidden-service laptop, as soon
4156 as it wakes up it tries to upload a service descriptor, but
4157 socketpair fails for some reason (localhost not up yet?).
4158 now we simply give up on that upload, and we'll try again later.
4159 i'd still like to find the bug though.
4160 - if an intro circ waiting for an ack dies before getting one, then
4162 - we were reusing stale service descriptors and refetching usable
4166 Changes in version 0.0.6pre4 - 2004-04-14
4167 o changes from 0.0.6pre3:
4168 - when bob fails to connect to the rendezvous point, and his
4169 circ didn't fail because of the rendezvous point itself, then
4170 he retries a couple of times
4171 - we expire introduction and rendezvous circs more thoroughly
4172 (sometimes they were hanging around forever)
4173 - we expire unattached rendezvous streams that have been around
4174 too long (they were sticking around forever).
4175 - fix a measly fencepost error that was crashing everybody with
4179 Changes in version 0.0.6pre3 - 2004-04-14
4180 o changes from 0.0.6pre2:
4181 - make hup work again
4182 - fix some memory leaks for dirservers
4183 - allow more skew in rendezvous descriptor timestamps, to help
4184 handle people like blanu who don't know what time it is
4185 - normal circs are 3 hops, but some rend/intro circs are 4, if
4186 the initiator doesn't get to choose the last hop
4187 - send acks for introductions, so alice can know whether to try
4189 - bob publishes intro points more correctly
4190 o changes from 0.0.5:
4191 - fix an assert trigger that's been plaguing us since the days
4192 of 0.0.2prexx (thanks weasel!)
4193 - retry stream correctly when we fail to connect because of
4194 exit-policy-reject (should try another) or can't-resolve-address
4195 (also should try another, because dns on random internet servers
4197 - when we hup a dirserver and we've *removed* a server from the
4198 approved-routers list, now we remove that server from the
4199 in-memory directories too
4202 Changes in version 0.0.6pre2 - 2004-04-08
4203 o We fixed our base32 implementation. Now it works on all architectures.
4206 Changes in version 0.0.6pre1 - 2004-04-08
4208 - Hidden services and rendezvous points are implemented. Go to
4209 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
4210 hidden services. (This only works via a socks4a proxy such as
4211 Privoxy, and currently it's quite slow.)
4214 Changes in version 0.0.5 - 2004-03-30
4218 Changes in version 0.0.5rc3 - 2004-03-29
4219 o Install torrc as torrc.sample -- we no longer clobber your
4221 o Re-enable recommendedversion checking (we broke it in rc2, oops)
4222 o Add in a 'notice' log level for things the operator should hear
4223 but that aren't warnings
4226 Changes in version 0.0.5rc2 - 2004-03-29
4227 o Hold socks connection open until reply is flushed (if possible)
4228 o Make exit nodes resolve IPs to IPs immediately, rather than asking
4229 the dns farm to do it.
4230 o Fix c99 aliasing warnings in rephist.c
4231 o Don't include server descriptors that are older than 24 hours in the
4233 o Give socks 'reject' replies their whole 15s to attempt to flush,
4234 rather than seeing the 60s timeout and assuming the flush had failed.
4235 o Clean automake droppings from the cvs repository
4238 Changes in version 0.0.5rc1 - 2004-03-28
4239 o Fix mangled-state bug in directory fetching (was causing sigpipes).
4240 o Only build circuits after we've fetched the directory: clients were
4241 using only the directory servers before they'd fetched a directory.
4242 This also means longer startup time; so it goes.
4243 o Fix an assert trigger where an OP would fail to handshake, and we'd
4244 expect it to have a nickname.
4245 o Work around a tsocks bug: do a socks reject when AP connection dies
4246 early, else tsocks goes into an infinite loop.
4249 Changes in version 0.0.4 - 2004-03-26
4250 o When connecting to a dirserver or OR and the network is down,
4254 Changes in version 0.0.3 - 2004-03-26
4255 o Warn and fail if server chose a nickname with illegal characters
4256 o Port to Solaris and Sparc:
4257 - include missing header fcntl.h
4258 - have autoconf find -lsocket -lnsl automatically
4259 - deal with hardware word alignment
4260 - make uname() work (solaris has a different return convention)
4261 - switch from using signal() to sigaction()
4262 o Preliminary work on reputation system:
4263 - Keep statistics on success/fail of connect attempts; they're published
4264 by kill -USR1 currently.
4265 - Add a RunTesting option to try to learn link state by creating test
4266 circuits, even when SocksPort is off.
4267 - Remove unused open circuits when there are too many.
4270 Changes in version 0.0.2 - 2004-03-19
4271 - Include strlcpy and strlcat for safer string ops
4272 - define INADDR_NONE so we compile (but still not run) on solaris
4275 Changes in version 0.0.2pre27 - 2004-03-14
4277 - Allow internal tor networks (we were rejecting internal IPs,
4278 now we allow them if they're set explicitly).
4279 - And fix a few endian issues.
4282 Changes in version 0.0.2pre26 - 2004-03-14
4284 - If a stream times out after 15s without a connected cell, don't
4285 try that circuit again: try a new one.
4286 - Retry streams at most 4 times. Then give up.
4287 - When a dirserver gets a descriptor from an unknown router, it
4288 logs its fingerprint (so the dirserver operator can choose to
4289 accept it even without mail from the server operator).
4290 - Inform unapproved servers when we reject their descriptors.
4291 - Make tor build on Windows again. It works as a client, who knows
4293 - Clearer instructions in the torrc for how to set up a server.
4294 - Be more efficient about reading fd's when our global token bucket
4295 (used for rate limiting) becomes empty.
4297 - Stop asserting that computers always go forward in time. It's
4299 - When we sent a cell (e.g. destroy) and then marked an OR connection
4300 expired, we might close it before finishing a flush if the other
4301 side isn't reading right then.
4302 - Don't allow dirservers to start if they haven't defined
4304 - We were caching transient dns failures. Oops.
4305 - Prevent servers from publishing an internal IP as their address.
4306 - Address a strcat vulnerability in circuit.c
4309 Changes in version 0.0.2pre25 - 2004-03-04
4311 - Put the OR's IP in its router descriptor, not its fqdn. That way
4312 we'll stop being stalled by gethostbyname for nodes with flaky dns,
4315 - If the user typed in an address that didn't resolve, the server
4319 Changes in version 0.0.2pre24 - 2004-03-03
4321 - Fix an assertion failure in dns.c, where we were trying to dequeue
4322 a pending dns resolve even if it wasn't pending
4323 - Fix a spurious socks5 warning about still trying to write after the
4324 connection is finished.
4325 - Hold certain marked_for_close connections open until they're finished
4326 flushing, rather than losing bytes by closing them too early.
4327 - Correctly report the reason for ending a stream
4328 - Remove some duplicate calls to connection_mark_for_close
4329 - Put switch_id and start_daemon earlier in the boot sequence, so it
4330 will actually try to chdir() to options.DataDirectory
4331 - Make 'make test' exit(1) if a test fails; fix some unit tests
4332 - Make tor fail when you use a config option it doesn't know about,
4333 rather than warn and continue.
4334 - Make --version work
4335 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
4338 Changes in version 0.0.2pre23 - 2004-02-29
4340 - Print a statement when the first circ is finished, so the user
4342 - If a relay cell is unrecognized at the end of the circuit,
4343 send back a destroy. (So attacks to mutate cells are more
4345 - New config option 'excludenodes' to avoid certain nodes for circuits.
4346 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
4347 so you can collect coredumps there.
4349 - Fix a bug in tls flushing where sometimes data got wedged and
4350 didn't flush until more data got sent. Hopefully this bug was
4351 a big factor in the random delays we were seeing.
4352 - Make 'connected' cells include the resolved IP, so the client
4353 dns cache actually gets populated.
4354 - Disallow changing from ORPort=0 to ORPort>0 on hup.
4355 - When we time-out on a stream and detach from the circuit, send an
4356 end cell down it first.
4357 - Only warn about an unknown router (in exitnodes, entrynodes,
4358 excludenodes) after we've fetched a directory.
4361 Changes in version 0.0.2pre22 - 2004-02-26
4363 - Servers publish less revealing uname information in descriptors.
4364 - More memory tracking and assertions, to crash more usefully when
4366 - If the default torrc isn't there, just use some default defaults.
4367 Plus provide an internal dirservers file if they don't have one.
4368 - When the user tries to use Tor as an http proxy, give them an http
4369 501 failure explaining that we're a socks proxy.
4370 - Dump a new router.desc on hup, to help confused people who change
4371 their exit policies and then wonder why router.desc doesn't reflect
4373 - Clean up the generic tor.sh init script that we ship with.
4375 - If the exit stream is pending on the resolve, and a destroy arrives,
4376 then the stream wasn't getting removed from the pending list. I
4377 think this was the one causing recent server crashes.
4378 - Use a more robust poll on OSX 10.3, since their poll is flaky.
4379 - When it couldn't resolve any dirservers, it was useless from then on.
4380 Now it reloads the RouterFile (or default dirservers) if it has no
4382 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
4383 many users don't even *have* a /usr/local/sbin/.
4386 Changes in version 0.0.2pre21 - 2004-02-18
4388 - There's a ChangeLog file that actually reflects the changelog.
4389 - There's a 'torify' wrapper script, with an accompanying
4390 tor-tsocks.conf, that simplifies the process of using tsocks for
4391 tor. It even has a man page.
4392 - The tor binary gets installed to sbin rather than bin now.
4393 - Retry streams where the connected cell hasn't arrived in 15 seconds
4394 - Clean up exit policy handling -- get the default out of the torrc,
4395 so we can update it without forcing each server operator to fix
4397 - Allow imaps and pop3s in default exit policy
4399 - Prevent picking middleman nodes as the last node in the circuit
4402 Changes in version 0.0.2pre20 - 2004-01-30
4404 - We now have a deb package, and it's in debian unstable. Go to
4406 - I've split the TotalBandwidth option into BandwidthRate (how many
4407 bytes per second you want to allow, long-term) and
4408 BandwidthBurst (how many bytes you will allow at once before the cap
4409 kicks in). This better token bucket approach lets you, say, set
4410 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
4411 performance while not exceeding your monthly bandwidth quota.
4412 - Push out a tls record's worth of data once you've got it, rather
4413 than waiting until you've read everything waiting to be read. This
4414 may improve performance by pipelining better. We'll see.
4415 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
4416 from failed circuits (if they haven't been connected yet) and attach
4418 - Expire old streams that haven't managed to connect. Some day we'll
4419 have them reattach to new circuits instead.
4422 - Fix several memory leaks that were causing servers to become bloated
4424 - Fix a few very rare assert triggers. A few more remain.
4425 - Setuid to User _before_ complaining about running as root.
4428 Changes in version 0.0.2pre19 - 2004-01-07
4430 - Fix deadlock condition in dns farm. We were telling a child to die by
4431 closing the parent's file descriptor to him. But newer children were
4432 inheriting the open file descriptor from the parent, and since they
4433 weren't closing it, the socket never closed, so the child never read
4434 eof, so he never knew to exit. Similarly, dns workers were holding
4435 open other sockets, leading to all sorts of chaos.
4436 - New cleaner daemon() code for forking and backgrounding.
4437 - If you log to a file, it now prints an entry at the top of the
4438 logfile so you know it's working.
4439 - The onionskin challenge length was 30 bytes longer than necessary.
4440 - Started to patch up the spec so it's not quite so out of date.
4443 Changes in version 0.0.2pre18 - 2004-01-02
4445 - Fix endian issues with the 'integrity' field in the relay header.
4446 - Fix a potential bug where connections in state
4447 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
4450 Changes in version 0.0.2pre17 - 2003-12-30
4452 - Made --debuglogfile (or any second log file, actually) work.
4453 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
4454 adversary could force us into an infinite loop.
4457 - Each onionskin handshake now includes a hash of the computed key,
4458 to prove the server's identity and help perfect forward secrecy.
4459 - Changed cell size from 256 to 512 bytes (working toward compatibility
4461 - Changed cell length to 2 bytes, and moved it to the relay header.
4462 - Implemented end-to-end integrity checking for the payloads of
4464 - Separated streamid from 'recognized' (otherwise circuits will get
4465 messed up when we try to have streams exit from the middle). We
4466 use the integrity-checking to confirm that a cell is addressed to
4468 - Randomize the initial circid and streamid values, so an adversary who
4469 breaks into a node can't learn how many circuits or streams have
4473 Changes in version 0.0.2pre16 - 2003-12-14
4475 - Fixed a bug that made HUP trigger an assert
4476 - Fixed a bug where a circuit that immediately failed wasn't being
4477 counted as a failed circuit in counting retries.
4480 - Now we close the circuit when we get a truncated cell: otherwise we're
4481 open to an anonymity attack where a bad node in the path truncates
4482 the circuit and then we open streams at him.
4483 - Add port ranges to exit policies
4484 - Add a conservative default exit policy
4485 - Warn if you're running tor as root
4486 - on HUP, retry OR connections and close/rebind listeners
4487 - options.EntryNodes: try these nodes first when picking the first node
4488 - options.ExitNodes: if your best choices happen to include any of
4489 your preferred exit nodes, you choose among just those preferred
4491 - options.ExcludedNodes: nodes that are never picked in path building
4494 Changes in version 0.0.2pre15 - 2003-12-03
4495 o Robustness and bugfixes:
4496 - Sometimes clients would cache incorrect DNS resolves, which would
4497 really screw things up.
4498 - An OP that goes offline would slowly leak all its sockets and stop
4500 - A wide variety of bugfixes in exit node selection, exit policy
4501 handling, and processing pending streams when a new circuit is
4503 - Pick nodes for a path only from those the directory says are up
4504 - Choose randomly from all running dirservers, not always the first one
4505 - Increase allowed http header size for directory fetch.
4506 - Stop writing to stderr (if we're daemonized it will be closed).
4507 - Enable -g always, so cores will be more useful to me.
4508 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
4511 - Wrote a man page. It lists commonly used options.
4514 - Change default loglevel to warn.
4515 - Make PidFile default to null rather than littering in your CWD.
4516 - OnionRouter config option is now obsolete. Instead it just checks
4518 - Moved to a single unified torrc file for both clients and servers.
4521 Changes in version 0.0.2pre14 - 2003-11-29
4522 o Robustness and bugfixes:
4523 - Force the admin to make the DataDirectory himself
4524 - to get ownership/permissions right
4525 - so clients no longer make a DataDirectory and then never use it
4526 - fix bug where a client who was offline for 45 minutes would never
4527 pull down a directory again
4528 - fix (or at least hide really well) the dns assert bug that was
4529 causing server crashes
4530 - warnings and improved robustness wrt clockskew for certs
4531 - use the native daemon(3) to daemonize, when available
4532 - exit if bind() fails
4533 - exit if neither socksport nor orport is defined
4534 - include our own tor_timegm (Win32 doesn't have its own)
4535 - bugfix for win32 with lots of connections
4536 - fix minor bias in PRNG
4537 - make dirserver more robust to corrupt cached directory
4540 - Wrote the design document (woo)
4542 o Circuit building and exit policies:
4543 - Circuits no longer try to use nodes that the directory has told them
4545 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
4546 bitcounts (18.0.0.0/8).
4547 - Make AP connections standby for a circuit if no suitable circuit
4548 exists, rather than failing
4549 - Circuits choose exit node based on addr/port, exit policies, and
4550 which AP connections are standing by
4551 - Bump min pathlen from 2 to 3
4552 - Relay end cells have a payload to describe why the stream ended.
4553 - If the stream failed because of exit policy, try again with a new
4555 - Clients have a dns cache to remember resolved addresses.
4556 - Notice more quickly when we have no working circuits
4559 - APPort is now called SocksPort
4560 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
4562 - RecommendedVersions is now a config variable rather than
4563 hardcoded (for dirservers)
4564 - Reloads config on HUP
4565 - Usage info on -h or --help
4566 - If you set User and Group config vars, it'll setu/gid to them.
4568 Changes in version 0.0.2pre13 - 2003-10-19
4569 o General stability:
4570 - SSL_write no longer fails when it returns WANTWRITE and the number
4571 of bytes in the buf has changed by the next SSL_write call.
4572 - Fix segfault fetching directory when network is down
4573 - Fix a variety of minor memory leaks
4574 - Dirservers reload the fingerprints file on HUP, so I don't have
4575 to take down the network when I approve a new router
4576 - Default server config file has explicit Address line to specify fqdn
4579 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
4580 - Make listener connections not ever alloc bufs
4582 o Autoconf improvements:
4583 - don't clobber an external CFLAGS in ./configure
4584 - Make install now works
4585 - create var/lib/tor on make install
4586 - autocreate a tor.sh initscript to help distribs
4587 - autocreate the torrc and sample-server-torrc with correct paths
4589 o Log files and Daemonizing now work:
4590 - If --DebugLogFile is specified, log to it at -l debug
4591 - If --LogFile is specified, use it instead of commandline
4592 - If --RunAsDaemon is set, tor forks and backgrounds on startup