1 Changes in version 0.1.2.9-??? - 2007-??-??
2 o Minor bugfixes (performance):
3 - Use OpenSSL's AES implementation on platforms where it's faster.
4 This could save us as much as 10% CPU usage.
6 o Minor bugfixes (server):
7 - Do not rotate onion key immediately after setting it for the first
10 o Minor bugfixes (directory servers):
11 - Stop calling servers that have been hibernating for a long time
12 "stable". Also, stop letting hibernating or obsolete servers affect
13 uptime and bandwidth cutoffs.
14 - Stop listing hibernating servers in the v1 directory.
16 o Minor bugfixes (hidden services):
17 - Upload hidden service descriptors slightly less often, to reduce
20 o Minor bugfixes (other):
21 - Fix an assert that could trigger if a controller quickly set then
22 cleared EntryNodes. (Bug found by Udo van den Heuvel.)
23 - On architectures where sizeof(int)>4, still clamp declarable bandwidth
25 - Fix a potential race condition in the rpm installer. Found by
27 - Try to fix eventdns warnings once and for all: do not treat a dns rcode
28 of 2 as indicating that the server is completely bad; it sometimes
29 means that the server is just bad for the request in question. (may fix
31 - On mingw, use "%I64u" to printf/scanf 64-bit integers, instead of the
32 usual GCC "%llu". This prevents a bug when saving 64-bit int
33 configuration values on mingw; the high-order 32 bits would get
34 truncated. If the value was then reloaded, disaster would
35 occur. (Fixes bug 400 and maybe also bug 397.)
38 Changes in version 0.1.2.8-beta - 2007-02-26
39 o Major bugfixes (crashes):
40 - Stop crashing when the controller asks us to resetconf more than
41 one config option at once. (Vidalia 0.0.11 does this.)
42 - Fix a crash that happened on Win98 when we're given command-line
43 arguments: don't try to load NT service functions from advapi32.dll
44 except when we need them. (Bug introduced in 0.1.2.7-alpha;
46 - Fix a longstanding obscure crash bug that could occur when
47 we run out of DNS worker processes. (Resolves bug 390.)
49 o Major bugfixes (hidden services):
50 - Correctly detect whether hidden service descriptor downloads are
51 in-progress. (Suggested by Karsten Loesing; fixes bug 399.)
53 o Major bugfixes (accounting):
54 - When we start during an accounting interval before it's time to wake
55 up, remember to wake up at the correct time. (May fix bug 342.)
57 o Minor bugfixes (controller):
58 - Give the controller END_STREAM_REASON_DESTROY events _before_ we
59 clear the corresponding on_circuit variable, and remember later
60 that we don't need to send a redundant CLOSED event. (Resolves part
62 - Report events where a resolve succeeded or where we got a socks
63 protocol error correctly, rather than calling both of them
65 - Change reported stream target addresses to IP consistently when
66 we finally get the IP from an exit node.
67 - Send log messages to the controller even if they happen to be very
70 o Minor bugfixes (other):
71 - Display correct results when reporting which versions are
72 recommended, and how recommended they are. (Resolves bug 383.)
73 - Improve our estimates for directory bandwidth to be less random:
74 guess that an unrecognized directory will have the average bandwidth
75 from all known directories, not that it will have the average
76 bandwidth from those directories earlier than it on the list.
77 - If we start a server with ClientOnly 1, then set ClientOnly to 0
78 and hup, stop triggering an assert based on an empty onion_key.
79 - On platforms with no working mmap() equivalent, don't warn the
80 user when cached-routers doesn't exist.
81 - Warn the user when mmap() [or its equivalent] fails for some reason
82 other than file-not-found.
83 - Don't warn the user when cached-routers.new doesn't exist: that's
84 perfectly fine when starting up for the first time.
85 - When EntryNodes are configured, rebuild the guard list to contain,
86 in order: the EntryNodes that were guards before; the rest of the
87 EntryNodes; the nodes that were guards before.
88 - Mask out all signals in sub-threads; only the libevent signal
89 handler should be processing them. This should prevent some crashes
90 on some machines using pthreads. (Patch from coderman.)
91 - Fix switched arguments on memset in the implementation of
92 tor_munmap() for systems with no mmap() call.
93 - When Tor receives a router descriptor that it asked for, but
94 no longer wants (because it has received fresh networkstatuses
95 in the meantime), do not warn the user. Cache the descriptor if
96 we're a cache; drop it if we aren't.
97 - Make earlier entry guards _really_ get retried when the network
99 - On a malformed DNS reply, always give an error to the corresponding
101 - Build with recent libevents on platforms that do not define the
102 nonstandard types "u_int8_t" and friends.
104 o Minor features (controller):
105 - Warn the user when an application uses the obsolete binary v0
106 control protocol. We're planning to remove support for it during
107 the next development series, so it's good to give people some
109 - Add STREAM_BW events to report per-entry-stream bandwidth
110 use. (Patch from Robert Hogan.)
111 - Rate-limit SIGNEWNYM signals in response to controllers that
112 impolitely generate them for every single stream. (Patch from
113 mwenge; closes bug 394.)
114 - Make REMAP stream events have a SOURCE (cache or exit), and
115 make them generated in every case where we get a successful
116 connected or resolved cell.
118 o Minor bugfixes (performance):
119 - Call router_have_min_dir_info half as often. (This is showing up in
120 some profiles, but not others.)
121 - When using GCC, make log_debug never get called at all, and its
122 arguments never get evaluated, when no debug logs are configured.
123 (This is showing up in some profiles, but not others.)
126 - Remove some never-implemented options. Mark PathlenCoinWeight as
128 - Implement proposal 106: Stop requiring clients to have well-formed
129 certificates; stop checking nicknames in certificates. (Clients
130 have certificates so that they can look like Tor servers, but in
131 the future we might want to allow them to look like regular TLS
132 clients instead. Nicknames in certificates serve no purpose other
133 than making our protocol easier to recognize on the wire.)
134 - Revise messages on handshake failure again to be even more clear about
135 which are incoming connections and which are outgoing.
136 - Discard any v1 directory info that's over 1 month old (for
137 directories) or over 1 week old (for running-routers lists).
138 - Do not warn when individual nodes in the configuration's EntryNodes,
139 ExitNodes, etc are down: warn only when all possible nodes
140 are down. (Fixes bug 348.)
141 - Always remove expired routers and networkstatus docs before checking
142 whether we have enough information to build circuits. (Fixes
144 - Put a lower-bound on MaxAdvertisedBandwidth.
147 Changes in version 0.1.2.7-alpha - 2007-02-06
148 o Major bugfixes (rate limiting):
149 - Servers decline directory requests much more aggressively when
150 they're low on bandwidth. Otherwise they end up queueing more and
151 more directory responses, which can't be good for latency.
152 - But never refuse directory requests from local addresses.
153 - Fix a memory leak when sending a 503 response for a networkstatus
155 - Be willing to read or write on local connections (e.g. controller
156 connections) even when the global rate limiting buckets are empty.
157 - If our system clock jumps back in time, don't publish a negative
158 uptime in the descriptor. Also, don't let the global rate limiting
159 buckets go absurdly negative.
160 - Flush local controller connection buffers periodically as we're
161 writing to them, so we avoid queueing 4+ megabytes of data before
164 o Major bugfixes (NT services):
165 - Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
166 command-line flag so that admins can override the default by saying
167 "tor --service install --user "SomeUser"". This will not affect
168 existing installed services. Also, warn the user that the service
169 will look for its configuration file in the service user's
170 %appdata% directory. (We can't do the 'hardwire the user's appdata
171 directory' trick any more, since we may not have read access to that
174 o Major bugfixes (other):
175 - Previously, we would cache up to 16 old networkstatus documents
176 indefinitely, if they came from nontrusted authorities. Now we
177 discard them if they are more than 10 days old.
178 - Fix a crash bug in the presence of DNS hijacking (reported by Andrew
180 - Detect and reject malformed DNS responses containing circular
182 - If exits are rare enough that we're not marking exits as guards,
183 ignore exit bandwidth when we're deciding the required bandwidth
185 - When we're handling a directory connection tunneled over Tor,
186 don't fill up internal memory buffers with all the data we want
187 to tunnel; instead, only add it if the OR connection that will
188 eventually receive it has some room for it. (This can lead to
189 slowdowns in tunneled dir connections; a better solution will have
192 o Minor bugfixes (dns):
193 - Add some defensive programming to eventdns.c in an attempt to catch
194 possible memory-stomping bugs.
195 - Detect and reject DNS replies containing IPv4 or IPv6 records with
196 an incorrect number of bytes. (Previously, we would ignore the
198 - Fix as-yet-unused reverse IPv6 lookup code so it sends nybbles
199 in the correct order, and doesn't crash.
200 - Free memory held in recently-completed DNS lookup attempts on exit.
201 This was not a memory leak, but may have been hiding memory leaks.
202 - Handle TTL values correctly on reverse DNS lookups.
203 - Treat failure to parse resolv.conf as an error.
205 o Minor bugfixes (other):
206 - Fix crash with "tor --list-fingerprint" (reported by seeess).
207 - When computing clock skew from directory HTTP headers, consider what
208 time it was when we finished asking for the directory, not what
210 - Expire socks connections if they spend too long waiting for the
211 handshake to finish. Previously we would let them sit around for
212 days, if the connecting application didn't close them either.
213 - And if the socks handshake hasn't started, don't send a
214 "DNS resolve socks failed" handshake reply; just close it.
215 - Stop using C functions that OpenBSD's linker doesn't like.
216 - Don't launch requests for descriptors unless we have networkstatuses
217 from at least half of the authorities. This delays the first
218 download slightly under pathological circumstances, but can prevent
219 us from downloading a bunch of descriptors we don't need.
220 - Do not log IPs with TLS failures for incoming TLS
221 connections. (Fixes bug 382.)
222 - If the user asks to use invalid exit nodes, be willing to use
224 - Stop using the reserved ac_cv namespace in our configure script.
225 - Call stat() slightly less often; use fstat() when possible.
226 - Refactor the way we handle pending circuits when an OR connection
227 completes or fails, in an attempt to fix a rare crash bug.
228 - Only rewrite a conn's address based on X-Forwarded-For: headers
229 if it's a parseable public IP address; and stop adding extra quotes
230 to the resulting address.
233 - Weight directory requests by advertised bandwidth. Now we can
234 let servers enable write limiting but still allow most clients to
235 succeed at their directory requests. (We still ignore weights when
236 choosing a directory authority; I hope this is a feature.)
239 - Create a new file ReleaseNotes which was the old ChangeLog. The
240 new ChangeLog file now includes the summaries for all development
242 - Check for addresses with invalid characters at the exit as well
243 as at the client, and warn less verbosely when they fail. You can
244 override this by setting ServerDNSAllowNonRFC953Addresses to 1.
245 - Adapt a patch from goodell to let the contrib/exitlist script
246 take arguments rather than require direct editing.
247 - Inform the server operator when we decide not to advertise a
248 DirPort due to AccountingMax enabled or a low BandwidthRate. It
249 was confusing Zax, so now we're hopefully more helpful.
250 - Bring us one step closer to being able to establish an encrypted
251 directory tunnel without knowing a descriptor first. Still not
252 ready yet. As part of the change, now assume we can use a
253 create_fast cell if we don't know anything about a router.
254 - Allow exit nodes to use nameservers running on ports other than 53.
255 - Servers now cache reverse DNS replies.
256 - Add an --ignore-missing-torrc command-line option so that we can
257 get the "use sensible defaults if the configuration file doesn't
258 exist" behavior even when specifying a torrc location on the command
261 o Minor features (controller):
262 - Track reasons for OR connection failure; make these reasons
263 available via the controller interface. (Patch from Mike Perry.)
264 - Add a SOCKS_BAD_HOSTNAME client status event so controllers
265 can learn when clients are sending malformed hostnames to Tor.
266 - Clean up documentation for controller status events.
267 - Add a REMAP status to stream events to note that a stream's
268 address has changed because of a cached address or a MapAddress
272 Changes in version 0.1.2.6-alpha - 2007-01-09
274 - Fix an assert error introduced in 0.1.2.5-alpha: if a single TLS
275 connection handles more than 4 gigs in either direction, we crash.
276 - Fix an assert error introduced in 0.1.2.5-alpha: if we're an
277 advertised exit node, somebody might try to exit from us when
278 we're bootstrapping and before we've built our descriptor yet.
279 Refuse the connection rather than crashing.
282 - Warn if we (as a server) find that we've resolved an address that we
283 weren't planning to resolve.
284 - Warn that using select() on any libevent version before 1.1 will be
285 unnecessarily slow (even for select()).
286 - Flush ERR-level controller status events just like we currently
287 flush ERR-level log events, so that a Tor shutdown doesn't prevent
288 the controller from learning about current events.
290 o Minor features (more controller status events):
291 - Implement EXTERNAL_ADDRESS server status event so controllers can
292 learn when our address changes.
293 - Implement BAD_SERVER_DESCRIPTOR server status event so controllers
294 can learn when directories reject our descriptor.
295 - Implement SOCKS_UNKNOWN_PROTOCOL client status event so controllers
296 can learn when a client application is speaking a non-socks protocol
298 - Implement DANGEROUS_SOCKS client status event so controllers
299 can learn when a client application is leaking DNS addresses.
300 - Implement BUG general status event so controllers can learn when
301 Tor is unhappy about its internal invariants.
302 - Implement CLOCK_SKEW general status event so controllers can learn
303 when Tor thinks the system clock is set incorrectly.
304 - Implement GOOD_SERVER_DESCRIPTOR and ACCEPTED_SERVER_DESCRIPTOR
305 server status events so controllers can learn when their descriptors
306 are accepted by a directory.
307 - Implement CHECKING_REACHABILITY and REACHABILITY_{SUCCEEDED|FAILED}
308 server status events so controllers can learn about Tor's progress in
309 deciding whether it's reachable from the outside.
310 - Implement BAD_LIBEVENT general status event so controllers can learn
311 when we have a version/method combination in libevent that needs to
313 - Implement NAMESERVER_STATUS, NAMESERVER_ALL_DOWN, DNS_HIJACKED,
314 and DNS_USELESS server status events so controllers can learn
315 about changes to DNS server status.
317 o Minor features (directory):
318 - Authorities no longer recommend exits as guards if this would shift
319 too much load to the exit nodes.
322 Changes in version 0.1.2.5-alpha - 2007-01-06
324 - Enable write limiting as well as read limiting. Now we sacrifice
325 capacity if we're pushing out lots of directory traffic, rather
326 than overrunning the user's intended bandwidth limits.
327 - Include TLS overhead when counting bandwidth usage; previously, we
328 would count only the bytes sent over TLS, but not the bytes used
330 - Support running the Tor service with a torrc not in the same
331 directory as tor.exe and default to using the torrc located in
332 the %appdata%\Tor\ of the user who installed the service. Patch
334 - Servers now check for the case when common DNS requests are going to
335 wildcarded addresses (i.e. all getting the same answer), and change
336 their exit policy to reject *:* if it's happening.
337 - Implement BEGIN_DIR cells, so we can connect to the directory
338 server via TLS to do encrypted directory requests rather than
339 plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
340 config options if you like.
342 o Minor features (config and docs):
343 - Start using the state file to store bandwidth accounting data:
344 the bw_accounting file is now obsolete. We'll keep generating it
345 for a while for people who are still using 0.1.2.4-alpha.
346 - Try to batch changes to the state file so that we do as few
347 disk writes as possible while still storing important things in
349 - The state file and the bw_accounting file get saved less often when
350 the AvoidDiskWrites config option is set.
351 - Make PIDFile work on Windows (untested).
352 - Add internal descriptions for a bunch of configuration options:
353 accessible via controller interface and in comments in saved
355 - Reject *:563 (NNTPS) in the default exit policy. We already reject
356 NNTP by default, so this seems like a sensible addition.
357 - Clients now reject hostnames with invalid characters. This should
358 avoid some inadvertent info leaks. Add an option
359 AllowNonRFC953Hostnames to disable this behavior, in case somebody
360 is running a private network with hosts called @, !, and #.
361 - Add a maintainer script to tell us which options are missing
362 documentation: "make check-docs".
363 - Add a new address-spec.txt document to describe our special-case
364 addresses: .exit, .onion, and .noconnnect.
366 o Minor features (DNS):
367 - Ongoing work on eventdns infrastructure: now it has dns server
368 and ipv6 support. One day Tor will make use of it.
369 - Add client-side caching for reverse DNS lookups.
370 - Add support to tor-resolve tool for reverse lookups and SOCKS5.
371 - When we change nameservers or IP addresses, reset and re-launch
372 our tests for DNS hijacking.
374 o Minor features (directory):
375 - Authorities now specify server versions in networkstatus. This adds
376 about 2% to the side of compressed networkstatus docs, and allows
377 clients to tell which servers support BEGIN_DIR and which don't.
378 The implementation is forward-compatible with a proposed future
379 protocol version scheme not tied to Tor versions.
380 - DirServer configuration lines now have an orport= option so
381 clients can open encrypted tunnels to the authorities without
382 having downloaded their descriptors yet. Enabled for moria1,
383 moria2, tor26, and lefkada now in the default configuration.
384 - Directory servers are more willing to send a 503 "busy" if they
385 are near their write limit, especially for v1 directory requests.
386 Now they can use their limited bandwidth for actual Tor traffic.
387 - Clients track responses with status 503 from dirservers. After a
388 dirserver has given us a 503, we try not to use it until an hour has
389 gone by, or until we have no dirservers that haven't given us a 503.
390 - When we get a 503 from a directory, and we're not a server, we don't
391 count the failure against the total number of failures allowed
392 for the thing we're trying to download.
393 - Report X-Your-Address-Is correctly from tunneled directory
394 connections; don't report X-Your-Address-Is when it's an internal
395 address; and never believe reported remote addresses when they're
397 - Protect against an unlikely DoS attack on directory servers.
398 - Add a BadDirectory flag to network status docs so that authorities
399 can (eventually) tell clients about caches they believe to be
402 o Minor features (controller):
403 - Have GETINFO dir/status/* work on hosts with DirPort disabled.
404 - Reimplement GETINFO so that info/names stays in sync with the
406 - Implement "GETINFO fingerprint".
407 - Implement "SETEVENTS GUARD" so controllers can get updates on
408 entry guard status as it changes.
410 o Minor features (clean up obsolete pieces):
411 - Remove some options that have been deprecated since at least
412 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
413 SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
415 - We no longer look for identity and onion keys in "identity.key" and
416 "onion.key" -- these were replaced by secret_id_key and
417 secret_onion_key in 0.0.8pre1.
418 - We no longer require unrecognized directory entries to be
421 o Major bugfixes (security):
422 - Stop sending the HttpProxyAuthenticator string to directory
423 servers when directory connections are tunnelled through Tor.
424 - Clients no longer store bandwidth history in the state file.
425 - Do not log introduction points for hidden services if SafeLogging
427 - When generating bandwidth history, round down to the nearest
428 1k. When storing accounting data, round up to the nearest 1k.
429 - When we're running as a server, remember when we last rotated onion
430 keys, so that we will rotate keys once they're a week old even if
431 we never stay up for a week ourselves.
433 o Major bugfixes (other):
434 - Fix a longstanding bug in eventdns that prevented the count of
435 timed-out resolves from ever being reset. This bug caused us to
436 give up on a nameserver the third time it timed out, and try it
437 10 seconds later... and to give up on it every time it timed out
439 - Take out the '5 second' timeout from the connection retry
440 schedule. Now the first connect attempt will wait a full 10
441 seconds before switching to a new circuit. Perhaps this will help
442 a lot. Based on observations from Mike Perry.
443 - Fix a bug on the Windows implementation of tor_mmap_file() that
444 would prevent the cached-routers file from ever loading. Reported
448 - Fix an assert failure when a directory authority sets
449 AuthDirRejectUnlisted and then receives a descriptor from an
450 unlisted router. Reported by seeess.
451 - Avoid a double-free when parsing malformed DirServer lines.
452 - Fix a bug when a BSD-style PF socket is first used. Patch from
454 - Fix a bug in 0.1.2.2-alpha that prevented clients from asking
455 to resolve an address at a given exit node even when they ask for
457 - Servers no longer ever list themselves in their "family" line,
458 even if configured to do so. This makes it easier to configure
459 family lists conveniently.
460 - When running as a server, don't fall back to 127.0.0.1 when no
461 nameservers are configured in /etc/resolv.conf; instead, make the
462 user fix resolv.conf or specify nameservers explicitly. (Resolves
464 - Stop accepting certain malformed ports in configured exit policies.
465 - Don't re-write the fingerprint file every restart, unless it has
467 - Stop warning when a single nameserver fails: only warn when _all_ of
468 our nameservers have failed. Also, when we only have one nameserver,
469 raise the threshold for deciding that the nameserver is dead.
470 - Directory authorities now only decide that routers are reachable
471 if their identity keys are as expected.
472 - When the user uses bad syntax in the Log config line, stop
473 suggesting other bad syntax as a replacement.
474 - Correctly detect ipv6 DNS capability on OpenBSD.
476 o Minor bugfixes (controller):
477 - Report the circuit number correctly in STREAM CLOSED events. Bug
478 reported by Mike Perry.
479 - Do not report bizarre values for results of accounting GETINFOs
480 when the last second's write or read exceeds the allotted bandwidth.
481 - Report "unrecognized key" rather than an empty string when the
482 controller tries to fetch a networkstatus that doesn't exist.
485 Changes in version 0.1.1.26 - 2006-12-14
487 - Stop sending the HttpProxyAuthenticator string to directory
488 servers when directory connections are tunnelled through Tor.
489 - Clients no longer store bandwidth history in the state file.
490 - Do not log introduction points for hidden services if SafeLogging
494 - Fix an assert failure when a directory authority sets
495 AuthDirRejectUnlisted and then receives a descriptor from an
496 unlisted router (reported by seeess).
499 Changes in version 0.1.2.4-alpha - 2006-12-03
501 - Add support for using natd; this allows FreeBSDs earlier than
502 5.1.2 to have ipfw send connections through Tor without using
503 SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
506 - Make all connections to addresses of the form ".noconnect"
507 immediately get closed. This lets application/controller combos
508 successfully test whether they're talking to the same Tor by
509 watching for STREAM events.
510 - Make cross.sh cross-compilation script work even when autogen.sh
511 hasn't been run. (Patch from Michael Mohr.)
512 - Statistics dumped by -USR2 now include a breakdown of public key
513 operations, for profiling.
516 - Fix a major leak when directory authorities parse their
517 approved-routers list, a minor memory leak when we fail to pick
518 an exit node, and a few rare leaks on errors.
519 - Handle TransPort connections even when the server sends data before
520 the client sends data. Previously, the connection would just hang
521 until the client sent data. (Patch from tup based on patch from
523 - Avoid assert failure when our cached-routers file is empty on
527 - Don't log spurious warnings when we see a circuit close reason we
528 don't recognize; it's probably just from a newer version of Tor.
529 - Have directory authorities allow larger amounts of drift in uptime
530 without replacing the server descriptor: previously, a server that
531 restarted every 30 minutes could have 48 "interesting" descriptors
533 - Start linking to the Tor specification and Tor reference manual
534 correctly in the Windows installer.
535 - Add Vidalia to the OS X uninstaller script, so when we uninstall
536 Tor/Privoxy we also uninstall Vidalia.
537 - Resume building on Irix64, and fix a lot of warnings from its
539 - Don't corrupt last_guessed_ip in router_new_address_suggestion()
540 when we're running as a client.
543 Changes in version 0.1.1.25 - 2006-11-04
545 - When a client asks us to resolve (rather than connect to)
546 an address, and we have a cached answer, give them the cached
547 answer. Previously, we would give them no answer at all.
548 - We were building exactly the wrong circuits when we predict
549 hidden service requirements, meaning Tor would have to build all
550 its circuits on demand.
551 - If none of our live entry guards have a high uptime, but we
552 require a guard with a high uptime, try adding a new guard before
553 we give up on the requirement. This patch should make long-lived
554 connections more stable on average.
555 - When testing reachability of our DirPort, don't launch new
556 tests when there's already one in progress -- unreachable
557 servers were stacking up dozens of testing streams.
560 - When the user sends a NEWNYM signal, clear the client-side DNS
561 cache too. Otherwise we continue to act on previous information.
564 - Avoid a memory corruption bug when creating a hash table for
566 - Avoid possibility of controller-triggered crash when misusing
567 certain commands from a v0 controller on platforms that do not
568 handle printf("%s",NULL) gracefully.
569 - Avoid infinite loop on unexpected controller input.
570 - Don't log spurious warnings when we see a circuit close reason we
571 don't recognize; it's probably just from a newer version of Tor.
572 - Add Vidalia to the OS X uninstaller script, so when we uninstall
573 Tor/Privoxy we also uninstall Vidalia.
576 Changes in version 0.1.2.3-alpha - 2006-10-29
578 - Prepare for servers to publish descriptors less often: never
579 discard a descriptor simply for being too old until either it is
580 recommended by no authorities, or until we get a better one for
581 the same router. Make caches consider retaining old recommended
582 routers for even longer.
583 - If most authorities set a BadExit flag for a server, clients
584 don't think of it as a general-purpose exit. Clients only consider
585 authorities that advertise themselves as listing bad exits.
586 - Directory servers now provide 'Pragma: no-cache' and 'Expires'
587 headers for content, so that we can work better in the presence of
588 caching HTTP proxies.
589 - Allow authorities to list nodes as bad exits by fingerprint or by
592 o Minor features, controller:
593 - Add a REASON field to CIRC events; for backward compatibility, this
594 field is sent only to controllers that have enabled the extended
595 event format. Also, add additional reason codes to explain why
596 a given circuit has been destroyed or truncated. (Patches from
598 - Add a REMOTE_REASON field to extended CIRC events to tell the
599 controller about why a remote OR told us to close a circuit.
600 - Stream events also now have REASON and REMOTE_REASON fields,
601 working much like those for circuit events.
602 - There's now a GETINFO ns/... field so that controllers can ask Tor
603 about the current status of a router.
604 - A new event type "NS" to inform a controller when our opinion of
605 a router's status has changed.
606 - Add a GETINFO events/names and GETINFO features/names so controllers
607 can tell which events and features are supported.
608 - A new CLEARDNSCACHE signal to allow controllers to clear the
609 client-side DNS cache without expiring circuits.
612 - When the user sends a NEWNYM signal, clear the client-side DNS
613 cache too. Otherwise we continue to act on previous information.
616 - Avoid sending junk to controllers or segfaulting when a controller
617 uses EVENT_NEW_DESC with verbose nicknames.
618 - Stop triggering asserts if the controller tries to extend hidden
619 service circuits (reported by mwenge).
620 - Avoid infinite loop on unexpected controller input.
621 - When the controller does a "GETINFO network-status", tell it
622 about even those routers whose descriptors are very old, and use
623 long nicknames where appropriate.
624 - Change NT service functions to be loaded on demand. This lets us
625 build with MinGW without breaking Tor for Windows 98 users.
626 - Do DirPort reachability tests less often, since a single test
627 chews through many circuits before giving up.
628 - In the hidden service example in torrc.sample, stop recommending
629 esoteric and discouraged hidden service options.
630 - When stopping an NT service, wait up to 10 sec for it to actually
631 stop. (Patch from Matt Edman; resolves bug 295.)
632 - Fix handling of verbose nicknames with ORCONN controller events:
633 make them show up exactly when requested, rather than exactly when
635 - When reporting verbose nicknames in entry_guards_getinfo(), avoid
636 printing a duplicate "$" in the keys we send (reported by mwenge).
637 - Correctly set maximum connection limit on Cygwin. (This time
639 - Try to detect Windows correctly when cross-compiling.
640 - Detect the size of the routers file correctly even if it is
641 corrupted (on systems without mmap) or not page-aligned (on systems
642 with mmap). This bug was harmless.
643 - Sometimes we didn't bother sending a RELAY_END cell when an attempt
644 to open a stream fails; now we do in more cases. This should
645 make clients able to find a good exit faster in some cases, since
646 unhandleable requests will now get an error rather than timing out.
647 - Resolve two memory leaks when rebuilding the on-disk router cache
648 (reported by fookoowa).
649 - Clean up minor code warnings suggested by the MIPSpro C compiler,
650 and reported by some Centos users.
651 - Controller signals now work on non-Unix platforms that don't define
652 SIGUSR1 and SIGUSR2 the way we expect.
653 - Patch from Michael Mohr to contrib/cross.sh, so it checks more
654 values before failing, and always enables eventdns.
655 - Libevent-1.2 exports, but does not define in its headers, strlcpy.
656 Try to fix this in configure.in by checking for most functions
657 before we check for libevent.
660 Changes in version 0.1.2.2-alpha - 2006-10-07
662 - Make our async eventdns library on-by-default for Tor servers,
663 and plan to deprecate the separate dnsworker threads.
664 - Add server-side support for "reverse" DNS lookups (using PTR
665 records so clients can determine the canonical hostname for a given
666 IPv4 address). Only supported by servers using eventdns; servers
667 now announce in their descriptors whether they support eventdns.
668 - Specify and implement client-side SOCKS5 interface for reverse DNS
669 lookups (see doc/socks-extensions.txt).
670 - Add a BEGIN_DIR relay cell type for an easier in-protocol way to
671 connect to directory servers through Tor. Previously, clients needed
672 to find Tor exits to make private connections to directory servers.
673 - Avoid choosing Exit nodes for entry or middle hops when the
674 total bandwidth available from non-Exit nodes is much higher than
675 the total bandwidth available from Exit nodes.
676 - Workaround for name servers (like Earthlink's) that hijack failing
677 DNS requests and replace the no-such-server answer with a "helpful"
678 redirect to an advertising-driven search portal. Also work around
679 DNS hijackers who "helpfully" decline to hijack known-invalid
680 RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
681 lets you turn it off.
682 - Send out a burst of long-range padding cells once we've established
683 that we're reachable. Spread them over 4 circuits, so hopefully
684 a few will be fast. This exercises our bandwidth and bootstraps
685 us into the directory more quickly.
687 o New/improved config options:
688 - Add new config option "ResolvConf" to let the server operator
689 choose an alternate resolve.conf file when using eventdns.
690 - Add an "EnforceDistinctSubnets" option to control our "exclude
691 servers on the same /16" behavior. It's still on by default; this
692 is mostly for people who want to operate private test networks with
693 all the machines on the same subnet.
694 - If one of our entry guards is on the ExcludeNodes list, or the
695 directory authorities don't think it's a good guard, treat it as
696 if it were unlisted: stop using it as a guard, and throw it off
697 the guards list if it stays that way for a long time.
698 - Allow directory authorities to be marked separately as authorities
699 for the v1 directory protocol, the v2 directory protocol, and
700 as hidden service directories, to make it easier to retire old
701 authorities. V1 authorities should set "HSAuthoritativeDir 1"
702 to continue being hidden service authorities too.
703 - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
705 o Minor features, controller:
706 - Fix CIRC controller events so that controllers can learn the
707 identity digests of non-Named servers used in circuit paths.
708 - Let controllers ask for more useful identifiers for servers. Instead
709 of learning identity digests for un-Named servers and nicknames
710 for Named servers, the new identifiers include digest, nickname,
711 and indication of Named status. Off by default; see control-spec.txt
712 for more information.
713 - Add a "getinfo address" controller command so it can display Tor's
714 best guess to the user.
715 - New controller event to alert the controller when our server
716 descriptor has changed.
717 - Give more meaningful errors on controller authentication failure.
719 o Minor features, other:
720 - When asked to resolve a hostname, don't use non-exit servers unless
721 requested to do so. This allows servers with broken DNS to be
722 useful to the network.
723 - Divide eventdns log messages into warn and info messages.
724 - Reserve the nickname "Unnamed" for routers that can't pick
725 a hostname: any router can call itself Unnamed; directory
726 authorities will never allocate Unnamed to any particular router;
727 clients won't believe that any router is the canonical Unnamed.
728 - Only include function names in log messages for info/debug messages.
729 For notice/warn/err, the content of the message should be clear on
730 its own, and printing the function name only confuses users.
731 - Avoid some false positives during reachability testing: don't try
732 to test via a server that's on the same /24 as us.
733 - If we fail to build a circuit to an intended enclave, and it's
734 not mandatory that we use that enclave, stop wanting it.
735 - When eventdns is enabled, allow multithreaded builds on NetBSD and
736 OpenBSD. (We had previously disabled threads on these platforms
737 because they didn't have working thread-safe resolver functions.)
739 o Major bugfixes, anonymity/security:
740 - If a client asked for a server by name, and there's a named server
741 in our network-status but we don't have its descriptor yet, we
742 could return an unnamed server instead.
743 - Fix NetBSD bug that could allow someone to force uninitialized RAM
744 to be sent to a server's DNS resolver. This only affects NetBSD
745 and other platforms that do not bounds-check tolower().
746 - Reject (most) attempts to use Tor circuits with length one. (If
747 many people start using Tor as a one-hop proxy, exit nodes become
748 a more attractive target for compromise.)
749 - Just because your DirPort is open doesn't mean people should be
750 able to remotely teach you about hidden service descriptors. Now
751 only accept rendezvous posts if you've got HSAuthoritativeDir set.
753 o Major bugfixes, other:
754 - Don't crash on race condition in dns.c: tor_assert(!resolve->expire)
755 - When a client asks the server to resolve (not connect to)
756 an address, and it has a cached answer, give them the cached answer.
757 Previously, the server would give them no answer at all.
758 - Allow really slow clients to not hang up five minutes into their
759 directory downloads (suggested by Adam J. Richter).
760 - We were building exactly the wrong circuits when we anticipated
761 hidden service requirements, meaning Tor would have to build all
762 its circuits on demand.
763 - Avoid crashing when we mmap a router cache file of size 0.
764 - When testing reachability of our DirPort, don't launch new
765 tests when there's already one in progress -- unreachable
766 servers were stacking up dozens of testing streams.
768 o Minor bugfixes, correctness:
769 - If we're a directory mirror and we ask for "all" network status
770 documents, we would discard status documents from authorities
772 - Avoid a memory corruption bug when creating a hash table for
774 - Avoid controller-triggered crash when misusing certain commands
775 from a v0 controller on platforms that do not handle
776 printf("%s",NULL) gracefully.
777 - Don't crash when a controller sends a third argument to an
778 "extendcircuit" request.
779 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
780 response; fix error code when "getinfo dir/status/" fails.
781 - Avoid crash when telling controller stream-status and a stream
783 - Patch from Adam Langley to fix assert() in eventdns.c.
784 - Fix a debug log message in eventdns to say "X resolved to Y"
785 instead of "X resolved to X".
786 - Make eventdns give strings for DNS errors, not just error numbers.
787 - Track unreachable entry guards correctly: don't conflate
788 'unreachable by us right now' with 'listed as down by the directory
789 authorities'. With the old code, if a guard was unreachable by
790 us but listed as running, it would clog our guard list forever.
791 - Behave correctly in case we ever have a network with more than
792 2GB/s total advertised capacity.
793 - Make TrackExitHosts case-insensitive, and fix the behavior of
794 ".suffix" TrackExitHosts items to avoid matching in the middle of
796 - Finally fix the openssl warnings from newer gccs that believe that
797 ignoring a return value is okay, but casting a return value and
798 then ignoring it is a sign of madness.
799 - Prevent the contrib/exitlist script from printing the same
800 result more than once.
801 - Patch from Steve Hildrey: Generate network status correctly on
802 non-versioning dirservers.
803 - Don't listen to the X-Your-Address-Is hint if you did the lookup
804 via Tor; otherwise you'll think you're the exit node's IP address.
806 o Minor bugfixes, performance:
807 - Two small performance improvements on parsing descriptors.
808 - Major performance improvement on inserting descriptors: change
809 algorithm from O(n^2) to O(n).
810 - Make the common memory allocation path faster on machines where
811 malloc(0) returns a pointer.
812 - Start remembering X-Your-Address-Is directory hints even if you're
813 a client, so you can become a server more smoothly.
814 - Avoid duplicate entries on MyFamily line in server descriptor.
816 o Packaging, features:
817 - Remove architecture from OS X builds. The official builds are
818 now universal binaries.
819 - The Debian package now uses --verify-config when (re)starting,
820 to distinguish configuration errors from other errors.
821 - Update RPMs to require libevent 1.1b.
823 o Packaging, bugfixes:
824 - Patches so Tor builds with MinGW on Windows.
825 - Patches so Tor might run on Cygwin again.
826 - Resume building on non-gcc compilers and ancient gcc. Resume
827 building with the -O0 compile flag. Resume building cleanly on
829 - Run correctly on OS X platforms with case-sensitive filesystems.
830 - Correct includes for net/if.h and net/pfvar.h on OpenBSD (from Tup).
831 - Add autoconf checks so Tor can build on Solaris x86 again.
834 - Documented (and renamed) ServerDNSSearchDomains and
835 ServerDNSResolvConfFile options.
836 - Be clearer that the *ListenAddress directives can be repeated
840 Changes in version 0.1.1.24 - 2006-09-29
842 - Allow really slow clients to not hang up five minutes into their
843 directory downloads (suggested by Adam J. Richter).
844 - Fix major performance regression from 0.1.0.x: instead of checking
845 whether we have enough directory information every time we want to
846 do something, only check when the directory information has changed.
847 This should improve client CPU usage by 25-50%.
848 - Don't crash if, after a server has been running for a while,
849 it can't resolve its hostname.
850 - When a client asks us to resolve (not connect to) an address,
851 and we have a cached answer, give them the cached answer.
852 Previously, we would give them no answer at all.
855 - Allow Tor to start when RunAsDaemon is set but no logs are set.
856 - Don't crash when the controller receives a third argument to an
857 "extendcircuit" request.
858 - Controller protocol fixes: fix encoding in "getinfo addr-mappings"
859 response; fix error code when "getinfo dir/status/" fails.
860 - Fix configure.in to not produce broken configure files with
861 more recent versions of autoconf. Thanks to Clint for his auto*
863 - Fix security bug on NetBSD that could allow someone to force
864 uninitialized RAM to be sent to a server's DNS resolver. This
865 only affects NetBSD and other platforms that do not bounds-check
867 - Warn user when using libevent 1.1a or earlier with win32 or kqueue
868 methods: these are known to be buggy.
869 - If we're a directory mirror and we ask for "all" network status
870 documents, we would discard status documents from authorities
874 Changes in version 0.1.2.1-alpha - 2006-08-27
876 - Add "eventdns" async dns library from Adam Langley, tweaked to
877 build on OSX and Windows. Only enabled if you pass the
878 --enable-eventdns argument to configure.
879 - Allow servers with no hostname or IP address to learn their
880 IP address by asking the directory authorities. This code only
881 kicks in when you would normally have exited with a "no address"
882 error. Nothing's authenticated, so use with care.
883 - Rather than waiting a fixed amount of time between retrying
884 application connections, we wait only 5 seconds for the first,
885 10 seconds for the second, and 15 seconds for each retry after
886 that. Hopefully this will improve the expected user experience.
887 - Patch from Tup to add support for transparent AP connections:
888 this basically bundles the functionality of trans-proxy-tor
889 into the Tor mainline. Now hosts with compliant pf/netfilter
890 implementations can redirect TCP connections straight to Tor
891 without diverting through SOCKS. Needs docs.
892 - Busy directory servers save lots of memory by spooling server
893 descriptors, v1 directories, and v2 networkstatus docs to buffers
894 as needed rather than en masse. Also mmap the cached-routers
895 files, so we don't need to keep the whole thing in memory too.
896 - Automatically avoid picking more than one node from the same
897 /16 network when constructing a circuit.
898 - Revise and clean up the torrc.sample that we ship with; add
899 a section for BandwidthRate and BandwidthBurst.
902 - Split circuit_t into origin_circuit_t and or_circuit_t, and
903 split connection_t into edge, or, dir, control, and base structs.
904 These will save quite a bit of memory on busy servers, and they'll
905 also help us track down bugs in the code and bugs in the spec.
906 - Experimentally re-enable kqueue on OSX when using libevent 1.1b
907 or later. Log when we are doing this, so we can diagnose it when
908 it fails. (Also, recommend libevent 1.1b for kqueue and
909 win32 methods; deprecate libevent 1.0b harder; make libevent
910 recommendation system saner.)
911 - Start being able to build universal binaries on OS X (thanks
913 - Export the default exit policy via the control port, so controllers
914 don't need to guess what it is / will be later.
915 - Add a man page entry for ProtocolWarnings.
916 - Add TestVia config option to the man page.
917 - Remove even more protocol-related warnings from Tor server logs,
918 such as bad TLS handshakes and malformed begin cells.
919 - Stop fetching descriptors if you're not a dir mirror and you
920 haven't tried to establish any circuits lately. [This currently
921 causes some dangerous behavior, because when you start up again
922 you'll use your ancient server descriptors.]
923 - New DirPort behavior: if you have your dirport set, you download
924 descriptors aggressively like a directory mirror, whether or not
926 - Get rid of the router_retry_connections notion. Now routers
927 no longer try to rebuild long-term connections to directory
928 authorities, and directory authorities no longer try to rebuild
929 long-term connections to all servers. We still don't hang up
930 connections in these two cases though -- we need to look at it
931 more carefully to avoid flapping, and we likely need to wait til
933 - Drop compatibility with obsolete Tors that permit create cells
934 to have the wrong circ_id_type.
935 - Re-enable per-connection rate limiting. Get rid of the "OP
936 bandwidth" concept. Lay groundwork for "bandwidth classes" --
937 separate global buckets that apply depending on what sort of conn
939 - Start publishing one minute or so after we find our ORPort
940 to be reachable. This will help reduce the number of descriptors
941 we have for ourselves floating around, since it's quite likely
942 other things (e.g. DirPort) will change during that minute too.
943 - Fork the v1 directory protocol into its own spec document,
944 and mark dir-spec.txt as the currently correct (v2) spec.
947 - When we find our DirPort to be reachable, publish a new descriptor
948 so we'll tell the world (reported by pnx).
949 - Publish a new descriptor after we hup/reload. This is important
950 if our config has changed such that we'll want to start advertising
951 our DirPort now, etc.
952 - Allow Tor to start when RunAsDaemon is set but no logs are set.
953 - When we have a state file we cannot parse, tell the user and
954 move it aside. Now we avoid situations where the user starts
955 Tor in 1904, Tor writes a state file with that timestamp in it,
956 the user fixes her clock, and Tor refuses to start.
957 - Fix configure.in to not produce broken configure files with
958 more recent versions of autoconf. Thanks to Clint for his auto*
960 - "tor --verify-config" now exits with -1(255) or 0 depending on
961 whether the config options are bad or good.
962 - Resolve bug 321 when using dnsworkers: append a period to every
963 address we resolve at the exit node, so that we do not accidentally
964 pick up local addresses, and so that failing searches are retried
965 in the resolver search domains. (This is already solved for
966 eventdns.) (This breaks Blossom servers for now.)
967 - If we are using an exit enclave and we can't connect, e.g. because
968 its webserver is misconfigured to not listen on localhost, then
969 back off and try connecting from somewhere else before we fail.
972 - Start compiling on MinGW on Windows (patches from Mike Chiussi).
973 - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
974 - Fix bug 314: Tor clients issued "unsafe socks" warnings even
975 when the IP address is mapped through MapAddress to a hostname.
976 - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
977 useless IPv6 DNS resolves.
978 - Patch suggested by Karsten Loesing: respond to SIGNAL command
979 before we execute the signal, in case the signal shuts us down.
980 - Clean up AllowInvalidNodes man page entry.
981 - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
982 - Add more asserts to track down an assert error on a windows Tor
983 server with connection_add being called with socket == -1.
984 - Handle reporting OR_CONN_EVENT_NEW events to the controller.
985 - Fix misleading log messages: an entry guard that is "unlisted",
986 as well as not known to be "down" (because we've never heard
987 of it), is not therefore "up".
988 - Remove code to special-case "-cvs" ending, since it has not
989 actually mattered since 0.0.9.
990 - Make our socks5 handling more robust to broken socks clients:
991 throw out everything waiting on the buffer in between socks
992 handshake phases, since they can't possibly (so the theory
993 goes) have predicted what we plan to respond to them.
996 Changes in version 0.1.1.23 - 2006-07-30
998 - Fast Tor servers, especially exit nodes, were triggering asserts
999 due to a bug in handling the list of pending DNS resolves. Some
1000 bugs still remain here; we're hunting them.
1001 - Entry guards could crash clients by sending unexpected input.
1002 - More fixes on reachability testing: if you find yourself reachable,
1003 then don't ever make any client requests (so you stop predicting
1004 circuits), then hup or have your clock jump, then later your IP
1005 changes, you won't think circuits are working, so you won't try to
1006 test reachability, so you won't publish.
1009 - Avoid a crash if the controller does a resetconf firewallports
1010 and then a setconf fascistfirewall=1.
1011 - Avoid an integer underflow when the dir authority decides whether
1012 a router is stable: we might wrongly label it stable, and compute
1013 a slightly wrong median stability, when a descriptor is published
1015 - Fix a place where we might trigger an assert if we can't build our
1016 own server descriptor yet.
1019 Changes in version 0.1.1.22 - 2006-07-05
1021 - Fix a big bug that was causing servers to not find themselves
1022 reachable if they changed IP addresses. Since only 0.1.1.22+
1023 servers can do reachability testing correctly, now we automatically
1024 make sure to test via one of these.
1025 - Fix to allow clients and mirrors to learn directory info from
1026 descriptor downloads that get cut off partway through.
1027 - Directory authorities had a bug in deciding if a newly published
1028 descriptor was novel enough to make everybody want a copy -- a few
1029 servers seem to be publishing new descriptors many times a minute.
1031 - Fix a rare bug that was causing some servers to complain about
1032 "closing wedged cpuworkers" and skip some circuit create requests.
1033 - Make the Exit flag in directory status documents actually work.
1036 Changes in version 0.1.1.21 - 2006-06-10
1037 o Crash and assert fixes from 0.1.1.20:
1038 - Fix a rare crash on Tor servers that have enabled hibernation.
1039 - Fix a seg fault on startup for Tor networks that use only one
1040 directory authority.
1041 - Fix an assert from a race condition that occurs on Tor servers
1042 while exiting, where various threads are trying to log that they're
1043 exiting, and delete the logs, at the same time.
1044 - Make our unit tests pass again on certain obscure platforms.
1047 - Add support for building SUSE RPM packages.
1048 - Speed up initial bootstrapping for clients: if we are making our
1049 first ever connection to any entry guard, then don't mark it down
1051 - When only one Tor server in the network is labelled as a guard,
1052 and we've already picked him, we would cycle endlessly picking him
1053 again, being unhappy about it, etc. Now we specifically exclude
1054 current guards when picking a new guard.
1055 - Servers send create cells more reliably after the TLS connection
1056 is established: we were sometimes forgetting to send half of them
1057 when we had more than one pending.
1058 - If we get a create cell that asks us to extend somewhere, but the
1059 Tor server there doesn't match the expected digest, we now send
1060 a destroy cell back, rather than silently doing nothing.
1061 - Make options->RedirectExit work again.
1062 - Make cookie authentication for the controller work again.
1063 - Stop being picky about unusual characters in the arguments to
1064 mapaddress. It's none of our business.
1065 - Add a new config option "TestVia" that lets you specify preferred
1066 middle hops to use for test circuits. Perhaps this will let me
1067 debug the reachability problems better.
1069 o Log / documentation fixes:
1070 - If we're a server and some peer has a broken TLS certificate, don't
1071 log about it unless ProtocolWarnings is set, i.e., we want to hear
1072 about protocol violations by others.
1073 - Fix spelling of VirtualAddrNetwork in man page.
1074 - Add a better explanation at the top of the autogenerated torrc file
1075 about what happened to our old torrc.
1078 Changes in version 0.1.1.20 - 2006-05-23
1080 - Downgrade a log severity where servers complain that they're
1082 - Avoid a compile warning on FreeBSD.
1083 - Remove string size limit on NEWDESC messages; solve bug 291.
1084 - Correct the RunAsDaemon entry in the man page; ignore RunAsDaemon
1085 more thoroughly when we're running on windows.
1088 Changes in version 0.1.1.19-rc - 2006-05-03
1090 - Regenerate our local descriptor if it's dirty and we try to use
1091 it locally (e.g. if it changes during reachability detection).
1092 - If we setconf our ORPort to 0, we continued to listen on the
1093 old ORPort and receive connections.
1094 - Avoid a second warning about machine/limits.h on Debian
1096 - Be willing to add our own routerinfo into the routerlist.
1097 Now authorities will include themselves in their directories
1098 and network-statuses.
1099 - Stop trying to upload rendezvous descriptors to every
1100 directory authority: only try the v1 authorities.
1101 - Servers no longer complain when they think they're not
1102 registered with the directory authorities. There were too many
1104 - Backport dist-rpm changes so rpms can be built without errors.
1107 - Implement an option, VirtualAddrMask, to set which addresses
1108 get handed out in response to mapaddress requests. This works
1109 around a bug in tsocks where 127.0.0.0/8 is never socksified.
1112 Changes in version 0.1.1.18-rc - 2006-04-10
1114 - Work harder to download live network-statuses from all the
1115 directory authorities we know about. Improve the threshold
1116 decision logic so we're more robust to edge cases.
1117 - When fetching rendezvous descriptors, we were willing to ask
1118 v2 authorities too, which would always return 404.
1121 - Stop listing down or invalid nodes in the v1 directory. This will
1122 reduce its bulk by about 1/3, and reduce load on directory
1124 - When deciding whether a router is Fast or Guard-worthy, consider
1125 his advertised BandwidthRate and not just the BandwidthCapacity.
1126 - No longer ship INSTALL and README files -- they are useless now.
1127 - Force rpmbuild to behave and honor target_cpu.
1128 - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
1129 - Start to include translated versions of the tor-doc-*.html
1130 files, along with the screenshots. Still needs more work.
1131 - Start sending back 512 and 451 errors if mapaddress fails,
1132 rather than not sending anything back at all.
1133 - When we fail to bind or listen on an incoming or outgoing
1134 socket, we should close it before failing. otherwise we just
1135 leak it. (thanks to weasel for finding.)
1136 - Allow "getinfo dir/status/foo" to work, as long as your DirPort
1137 is enabled. (This is a hack, and will be fixed in 0.1.2.x.)
1138 - Make NoPublish (even though deprecated) work again.
1139 - Fix a minor security flaw where a versioning auth dirserver
1140 could list a recommended version many times in a row to make
1141 clients more convinced that it's recommended.
1142 - Fix crash bug if there are two unregistered servers running
1143 with the same nickname, one of them is down, and you ask for
1144 them by nickname in your EntryNodes or ExitNodes. Also, try
1145 to pick the one that's running rather than an arbitrary one.
1146 - Fix an infinite loop we could hit if we go offline for too long.
1147 - Complain when we hit WSAENOBUFS on recv() or write() too.
1148 Perhaps this will help us hunt the bug.
1149 - If you're not a versioning dirserver, don't put the string
1150 "client-versions \nserver-versions \n" in your network-status.
1151 - Lower the minimum required number of file descriptors to 1000,
1152 so we can have some overhead for Valgrind on Linux, where the
1153 default ulimit -n is 1024.
1156 - Add tor.dizum.com as the fifth authoritative directory server.
1157 - Add a new config option FetchUselessDescriptors, off by default,
1158 for when you plan to run "exitlist" on your client and you want
1159 to know about even the non-running descriptors.
1162 Changes in version 0.1.1.17-rc - 2006-03-28
1164 - Clients and servers since 0.1.1.10-alpha have been expiring
1165 connections whenever they are idle for 5 minutes and they *do*
1166 have circuits on them. Oops. With this new version, clients will
1167 discard their previous entry guard choices and avoid choosing
1168 entry guards running these flawed versions.
1169 - Fix memory leak when uncompressing concatenated zlib streams. This
1170 was causing substantial leaks over time on Tor servers.
1171 - The v1 directory was including servers as much as 48 hours old,
1172 because that's how the new routerlist->routers works. Now only
1173 include them if they're 20 hours old or less.
1176 - Resume building on irix64, netbsd 2.0, etc.
1177 - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
1179 - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
1180 and it is confusing some users.
1181 - Mirrors stop caching the v1 directory so often.
1182 - Make the max number of old descriptors that a cache will hold
1183 rise with the number of directory authorities, so we can scale.
1184 - Change our win32 uname() hack to be more forgiving about what
1185 win32 versions it thinks it's found.
1188 - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
1190 - When the controller's *setconf commands fail, collect an error
1191 message in a string and hand it back to the controller.
1192 - Make the v2 dir's "Fast" flag based on relative capacity, just
1193 like "Stable" is based on median uptime. Name everything in the
1194 top 7/8 Fast, and only the top 1/2 gets to be a Guard.
1195 - Log server fingerprint on startup, so new server operators don't
1196 have to go hunting around their filesystem for it.
1197 - Return a robots.txt on our dirport to discourage google indexing.
1198 - Let the controller ask for GETINFO dir/status/foo so it can ask
1199 directly rather than connecting to the dir port. Only works when
1200 dirport is set for now.
1202 o New config options rather than constants in the code:
1203 - SocksTimeout: How long do we let a socks connection wait
1204 unattached before we fail it?
1205 - CircuitBuildTimeout: Cull non-open circuits that were born
1206 at least this many seconds ago.
1207 - CircuitIdleTimeout: Cull open clean circuits that were born
1208 at least this many seconds ago.
1211 Changes in version 0.1.1.16-rc - 2006-03-18
1212 o Bugfixes on 0.1.1.15-rc:
1213 - Fix assert when the controller asks to attachstream a connect-wait
1214 or resolve-wait stream.
1215 - Now do address rewriting when the controller asks us to attach
1216 to a particular circuit too. This will let Blossom specify
1217 "moria2.exit" without having to learn what moria2's IP address is.
1218 - Make the "tor --verify-config" command-line work again, so people
1219 can automatically check if their torrc will parse.
1220 - Authoritative dirservers no longer require an open connection from
1221 a server to consider him "reachable". We need this change because
1222 when we add new auth dirservers, old servers won't know not to
1224 - Let Tor build on Sun CC again.
1225 - Fix an off-by-one buffer size in dirserv.c that magically never
1226 hit our three authorities but broke sjmurdoch's own tor network.
1227 - If we as a directory mirror don't know of any v1 directory
1228 authorities, then don't try to cache any v1 directories.
1229 - Stop warning about unknown servers in our family when they are
1230 given as hex digests.
1231 - Stop complaining as quickly to the server operator that he
1232 hasn't registered his nickname/key binding.
1233 - Various cleanups so we can add new V2 Auth Dirservers.
1234 - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
1235 reflect the updated flags in our v2 dir protocol.
1236 - Resume allowing non-printable characters for exit streams (both
1237 for connecting and for resolving). Now we tolerate applications
1238 that don't follow the RFCs. But continue to block malformed names
1241 o Bugfixes on 0.1.0.x:
1242 - Fix assert bug in close_logs(): when we close and delete logs,
1243 remove them all from the global "logfiles" list.
1244 - Fix minor integer overflow in calculating when we expect to use up
1245 our bandwidth allocation before hibernating.
1246 - Fix a couple of bugs in OpenSSL detection. Also, deal better when
1247 there are multiple SSLs installed with different versions.
1248 - When we try to be a server and Address is not explicitly set and
1249 our hostname resolves to a private IP address, try to use an
1250 interface address if it has a public address. Now Windows machines
1251 that think of themselves as localhost can work by default.
1254 - Let the controller ask for GETINFO dir/server/foo so it can ask
1255 directly rather than connecting to the dir port.
1256 - Let the controller tell us about certain router descriptors
1257 that it doesn't want Tor to use in circuits. Implement
1258 SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
1259 - New config option SafeSocks to reject all application connections
1260 using unsafe socks protocols. Defaults to off.
1263 Changes in version 0.1.1.15-rc - 2006-03-11
1264 o Bugfixes and cleanups:
1265 - When we're printing strings from the network, don't try to print
1266 non-printable characters. This protects us against shell escape
1267 sequence exploits, and also against attacks to fool humans into
1268 misreading their logs.
1269 - Fix a bug where Tor would fail to establish any connections if you
1270 left it off for 24 hours and then started it: we were happy with
1271 the obsolete network statuses, but they all referred to router
1272 descriptors that were too old to fetch, so we ended up with no
1273 valid router descriptors.
1274 - Fix a seg fault in the controller's "getinfo orconn-status"
1275 command while listing status on incoming handshaking connections.
1276 Introduce a status name "NEW" for these connections.
1277 - If we get a linelist or linelist_s config option from the torrc
1278 (e.g. ExitPolicy) and it has no value, warn and skip rather than
1279 silently resetting it to its default.
1280 - Don't abandon entry guards until they've been down or gone for
1282 - Cleaner and quieter log messages.
1285 - New controller signal NEWNYM that makes new application requests
1287 - Add a new circuit purpose 'controller' to let the controller ask
1288 for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
1289 controller command to let you specify the purpose if you're
1290 starting a new circuit. Add a new SETCIRCUITPURPOSE controller
1291 command to let you change a circuit's purpose after it's been
1293 - Accept "private:*" in routerdesc exit policies; not generated yet
1294 because older Tors do not understand it.
1295 - Add BSD-style contributed startup script "rc.subr" from Peter
1299 Changes in version 0.1.1.14-alpha - 2006-02-20
1300 o Bugfixes on 0.1.1.x:
1301 - Don't die if we ask for a stdout or stderr log (even implicitly)
1302 and we're set to RunAsDaemon -- just warn.
1303 - We still had a few bugs in the OR connection rotation code that
1304 caused directory servers to slowly aggregate connections to other
1305 fast Tor servers. This time for sure!
1306 - Make log entries on Win32 include the name of the function again.
1307 - We were treating a pair of exit policies if they were equal even
1308 if one said accept and the other said reject -- causing us to
1309 not always publish a new descriptor since we thought nothing
1311 - Retry pending server downloads as well as pending networkstatus
1312 downloads when we unexpectedly get a socks request.
1313 - We were ignoring the IS_FAST flag in the directory status,
1314 meaning we were willing to pick trivial-bandwidth nodes for "fast"
1316 - If the controller's SAVECONF command fails (e.g. due to file
1317 permissions), let the controller know that it failed.
1320 - If we're trying to be a Tor server and running Windows 95/98/ME
1321 as a server, explain that we'll likely crash.
1322 - When we're a server, a client asks for an old-style directory,
1323 and our write bucket is empty, don't give it to him. This way
1324 small servers can continue to serve the directory *sometimes*,
1325 without getting overloaded.
1326 - Compress exit policies even more -- look for duplicate lines
1328 - Clients now honor the "guard" flag in the router status when
1329 picking entry guards, rather than looking at is_fast or is_stable.
1330 - Retain unrecognized lines in $DATADIR/state file, so that we can
1331 be forward-compatible.
1332 - Generate 18.0.0.0/8 address policy format in descs when we can;
1333 warn when the mask is not reducible to a bit-prefix.
1334 - Let the user set ControlListenAddress in the torrc. This can be
1335 dangerous, but there are some cases (like a secured LAN) where it
1337 - Split ReachableAddresses into ReachableDirAddresses and
1338 ReachableORAddresses, so we can restrict Dir conns to port 80
1339 and OR conns to port 443.
1340 - Now we can target arch and OS in rpm builds (contributed by
1341 Phobos). Also make the resulting dist-rpm filename match the
1343 - New config options to help controllers: FetchServerDescriptors
1344 and FetchHidServDescriptors for whether to fetch server
1345 info and hidserv info or let the controller do it, and
1346 PublishServerDescriptor and PublishHidServDescriptors.
1347 - Also let the controller set the __AllDirActionsPrivate config
1348 option if you want all directory fetches/publishes to happen via
1349 Tor (it assumes your controller bootstraps your circuits).
1352 Changes in version 0.1.0.17 - 2006-02-17
1353 o Crash bugfixes on 0.1.0.x:
1354 - When servers with a non-zero DirPort came out of hibernation,
1355 sometimes they would trigger an assert.
1357 o Other important bugfixes:
1358 - On platforms that don't have getrlimit (like Windows), we were
1359 artificially constraining ourselves to a max of 1024
1360 connections. Now just assume that we can handle as many as 15000
1361 connections. Hopefully this won't cause other problems.
1363 o Backported features:
1364 - When we're a server, a client asks for an old-style directory,
1365 and our write bucket is empty, don't give it to him. This way
1366 small servers can continue to serve the directory *sometimes*,
1367 without getting overloaded.
1368 - Whenever you get a 503 in response to a directory fetch, try
1369 once more. This will become important once servers start sending
1370 503's whenever they feel busy.
1371 - Fetch a new directory every 120 minutes, not every 40 minutes.
1372 Now that we have hundreds of thousands of users running the old
1373 directory algorithm, it's starting to hurt a lot.
1374 - Bump up the period for forcing a hidden service descriptor upload
1375 from 20 minutes to 1 hour.
1378 Changes in version 0.1.1.13-alpha - 2006-02-09
1379 o Crashes in 0.1.1.x:
1380 - When you tried to setconf ORPort via the controller, Tor would
1381 crash. So people using TorCP to become a server were sad.
1382 - Solve (I hope) the stack-smashing bug that we were seeing on fast
1383 servers. The problem appears to be something do with OpenSSL's
1384 random number generation, or how we call it, or something. Let me
1385 know if the crashes continue.
1386 - Turn crypto hardware acceleration off by default, until we find
1387 somebody smart who can test it for us. (It appears to produce
1388 seg faults in at least some cases.)
1389 - Fix a rare assert error when we've tried all intro points for
1390 a hidden service and we try fetching the service descriptor again:
1391 "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
1394 - Fix a major load balance bug: we were round-robining in 16 KB
1395 chunks, and servers with bandwidthrate of 20 KB, while downloading
1396 a 600 KB directory, would starve their other connections. Now we
1397 try to be a bit more fair.
1398 - Dir authorities and mirrors were never expiring the newest
1399 descriptor for each server, causing memory and directory bloat.
1400 - Fix memory-bloating and connection-bloating bug on servers: We
1401 were never closing any connection that had ever had a circuit on
1402 it, because we were checking conn->n_circuits == 0, yet we had a
1403 bug that let it go negative.
1404 - Make Tor work using squid as your http proxy again -- squid
1405 returns an error if you ask for a URL that's too long, and it uses
1406 a really generic error message. Plus, many people are behind a
1407 transparent squid so they don't even realize it.
1408 - On platforms that don't have getrlimit (like Windows), we were
1409 artificially constraining ourselves to a max of 1024
1410 connections. Now just assume that we can handle as many as 15000
1411 connections. Hopefully this won't cause other problems.
1412 - Add a new config option ExitPolicyRejectPrivate which defaults to
1413 1. This means all exit policies will begin with rejecting private
1414 addresses, unless the server operator explicitly turns it off.
1417 - Clients not longer download descriptors for non-running
1419 - Before we add new directory authorities, we should make it
1420 clear that only v1 authorities should receive/publish hidden
1421 service descriptors.
1424 - As soon as we've fetched some more directory info, immediately
1425 try to download more server descriptors. This way we don't have
1426 a 10 second pause during initial bootstrapping.
1427 - Remove even more loud log messages that the server operator can't
1429 - When we're running an obsolete or un-recommended version, make
1430 the log message more clear about what the problem is and what
1431 versions *are* still recommended.
1432 - Provide a more useful warn message when our onion queue gets full:
1433 the CPU is too slow or the exit policy is too liberal.
1434 - Don't warn when we receive a 503 from a dirserver/cache -- this
1435 will pave the way for them being able to refuse if they're busy.
1436 - When we fail to bind a listener, try to provide a more useful
1437 log message: e.g., "Is Tor already running?"
1438 - Adjust tor-spec to parameterize cell and key lengths. Now Ian
1439 Goldberg can prove things about our handshake protocol more
1441 - MaxConn has been obsolete for a while now. Document the ConnLimit
1442 config option, which is a *minimum* number of file descriptors
1443 that must be available else Tor refuses to start.
1444 - Apply Matt Ghali's --with-syslog-facility patch to ./configure
1445 if you log to syslog and want something other than LOG_DAEMON.
1446 - Make dirservers generate a separate "guard" flag to mean,
1447 "would make a good entry guard". Make clients parse it and vote
1448 on it. Not used by clients yet.
1449 - Implement --with-libevent-dir option to ./configure. Also, improve
1450 search techniques to find libevent, and use those for openssl too.
1451 - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
1452 - Only start testing reachability once we've established a
1453 circuit. This will make startup on dirservers less noisy.
1454 - Don't try to upload hidden service descriptors until we have
1455 established a circuit.
1456 - Fix the controller's "attachstream 0" command to treat conn like
1457 it just connected, doing address remapping, handling .exit and
1458 .onion idioms, and so on. Now we're more uniform in making sure
1459 that the controller hears about new and closing connections.
1462 Changes in version 0.1.1.12-alpha - 2006-01-11
1463 o Bugfixes on 0.1.1.x:
1464 - The fix to close duplicate server connections was closing all
1465 Tor client connections if they didn't establish a circuit
1466 quickly enough. Oops.
1467 - Fix minor memory issue (double-free) that happened on exit.
1469 o Bugfixes on 0.1.0.x:
1470 - Tor didn't warn when it failed to open a log file.
1473 Changes in version 0.1.1.11-alpha - 2006-01-10
1474 o Crashes in 0.1.1.x:
1475 - Include all the assert/crash fixes from 0.1.0.16.
1476 - If you start Tor and then quit very quickly, there were some
1477 races that tried to free things that weren't allocated yet.
1478 - Fix a rare memory stomp if you're running hidden services.
1479 - Fix segfault when specifying DirServer in config without nickname.
1480 - Fix a seg fault when you finish connecting to a server but at
1481 that moment you dump his server descriptor.
1482 - Extendcircuit and Attachstream controller commands would
1483 assert/crash if you don't give them enough arguments.
1484 - Fix an assert error when we're out of space in the connection_list
1485 and we try to post a hidden service descriptor (reported by weasel).
1486 - If you specify a relative torrc path and you set RunAsDaemon in
1487 your torrc, then it chdir()'s to the new directory. If you HUP,
1488 it tries to load the new torrc location, fails, and exits.
1489 The fix: no longer allow a relative path to torrc using -f.
1492 - Implement "entry guards": automatically choose a handful of entry
1493 nodes and stick with them for all circuits. Only pick new guards
1494 when the ones you have are unsuitable, and if the old guards
1495 become suitable again, switch back. This will increase security
1496 dramatically against certain end-point attacks. The EntryNodes
1497 config option now provides some hints about which entry guards you
1498 want to use most; and StrictEntryNodes means to only use those.
1499 - New directory logic: download by descriptor digest, not by
1500 fingerprint. Caches try to download all listed digests from
1501 authorities; clients try to download "best" digests from caches.
1502 This avoids partitioning and isolating attacks better.
1503 - Make the "stable" router flag in network-status be the median of
1504 the uptimes of running valid servers, and make clients pay
1505 attention to the network-status flags. Thus the cutoff adapts
1506 to the stability of the network as a whole, making IRC, IM, etc
1507 connections more reliable.
1510 - Tor servers with dynamic IP addresses were needing to wait 18
1511 hours before they could start doing reachability testing using
1512 the new IP address and ports. This is because they were using
1513 the internal descriptor to learn what to test, yet they were only
1514 rebuilding the descriptor once they decided they were reachable.
1515 - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
1516 to download certain server descriptors, throw them away, and then
1517 fetch them again after 30 minutes. Now mirrors throw away these
1518 server descriptors so clients can't get them.
1519 - We were leaving duplicate connections to other ORs open for a week,
1520 rather than closing them once we detect a duplicate. This only
1521 really affected authdirservers, but it affected them a lot.
1522 - Spread the authdirservers' reachability testing over the entire
1523 testing interval, so we don't try to do 500 TLS's at once every
1527 - If the network is down, and we try to connect to a conn because
1528 we have a circuit in mind, and we timeout (30 seconds) because the
1529 network never answers, we were expiring the circuit, but we weren't
1530 obsoleting the connection or telling the entry_guards functions.
1531 - Some Tor servers process billions of cells per day. These statistics
1532 need to be uint64_t's.
1533 - Check for integer overflows in more places, when adding elements
1534 to smartlists. This could possibly prevent a buffer overflow
1535 on malicious huge inputs. I don't see any, but I haven't looked
1537 - ReachableAddresses kept growing new "reject *:*" lines on every
1539 - When you "setconf log" via the controller, it should remove all
1540 logs. We were automatically adding back in a "log notice stdout".
1541 - Newly bootstrapped Tor networks couldn't establish hidden service
1542 circuits until they had nodes with high uptime. Be more tolerant.
1543 - We were marking servers down when they could not answer every piece
1544 of the directory request we sent them. This was far too harsh.
1545 - Fix the torify (tsocks) config file to not use Tor for localhost
1547 - Directory authorities now go to the proper authority when asking for
1548 a networkstatus, even when they want a compressed one.
1549 - Fix a harmless bug that was causing Tor servers to log
1550 "Got an end because of misc error, but we're not an AP. Closing."
1551 - Authorities were treating their own descriptor changes as cosmetic,
1552 meaning the descriptor available in the network-status and the
1553 descriptor that clients downloaded were different.
1554 - The OS X installer was adding a symlink for tor_resolve but
1555 the binary was called tor-resolve (reported by Thomas Hardly).
1556 - Workaround a problem with some http proxies where they refuse GET
1557 requests that specify "Content-Length: 0" (reported by Adrian).
1558 - Fix wrong log message when you add a "HiddenServiceNodes" config
1559 line without any HiddenServiceDir line (reported by Chris Thomas).
1562 - Write the TorVersion into the state file so we have a prayer of
1563 keeping forward and backward compatibility.
1564 - Revive the FascistFirewall config option rather than eliminating it:
1565 now it's a synonym for ReachableAddresses *:80,*:443.
1566 - Clients choose directory servers from the network status lists,
1567 not from their internal list of router descriptors. Now they can
1568 go to caches directly rather than needing to go to authorities
1570 - Directory authorities ignore router descriptors that have only
1571 cosmetic differences: do this for 0.1.0.x servers now too.
1572 - Add a new flag to network-status indicating whether the server
1573 can answer v2 directory requests too.
1574 - Authdirs now stop whining so loudly about bad descriptors that
1575 they fetch from other dirservers. So when there's a log complaint,
1576 it's for sure from a freshly uploaded descriptor.
1577 - Reduce memory requirements in our structs by changing the order
1579 - There used to be two ways to specify your listening ports in a
1580 server descriptor: on the "router" line and with a separate "ports"
1581 line. Remove support for the "ports" line.
1582 - New config option "AuthDirRejectUnlisted" for auth dirservers as
1583 a panic button: if we get flooded with unusable servers we can
1584 revert to only listing servers in the approved-routers file.
1585 - Auth dir servers can now mark a fingerprint as "!reject" or
1586 "!invalid" in the approved-routers file (as its nickname), to
1587 refuse descriptors outright or include them but marked as invalid.
1588 - Servers store bandwidth history across restarts/crashes.
1589 - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
1590 get a better idea of why their circuits failed. Not used yet.
1591 - Directory mirrors now cache up to 16 unrecognized network-status
1592 docs. Now we can add new authdirservers and they'll be cached too.
1593 - When picking a random directory, prefer non-authorities if any
1595 - New controller option "getinfo desc/all-recent" to fetch the
1596 latest server descriptor for every router that Tor knows about.
1599 Changes in version 0.1.0.16 - 2006-01-02
1600 o Crash bugfixes on 0.1.0.x:
1601 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
1602 corrupting the heap, losing FDs, or crashing when we need to resize
1603 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
1604 - It turns out sparc64 platforms crash on unaligned memory access
1605 too -- so detect and avoid this.
1606 - Handle truncated compressed data correctly (by detecting it and
1608 - Fix possible-but-unlikely free(NULL) in control.c.
1609 - When we were closing connections, there was a rare case that
1610 stomped on memory, triggering seg faults and asserts.
1611 - Avoid potential infinite recursion when building a descriptor. (We
1612 don't know that it ever happened, but better to fix it anyway.)
1613 - We were neglecting to unlink marked circuits from soon-to-close OR
1614 connections, which caused some rare scribbling on freed memory.
1615 - Fix a memory stomping race bug when closing the joining point of two
1616 rendezvous circuits.
1617 - Fix an assert in time parsing found by Steven Murdoch.
1619 o Other bugfixes on 0.1.0.x:
1620 - When we're doing reachability testing, provide more useful log
1621 messages so the operator knows what to expect.
1622 - Do not check whether DirPort is reachable when we are suppressing
1623 advertising it because of hibernation.
1624 - When building with -static or on Solaris, we sometimes needed -ldl.
1625 - One of the dirservers (tor26) changed its IP address.
1626 - When we're deciding whether a stream has enough circuits around
1627 that can handle it, count the freshly dirty ones and not the ones
1628 that are so dirty they won't be able to handle it.
1629 - When we're expiring old circuits, we had a logic error that caused
1630 us to close new rendezvous circuits rather than old ones.
1631 - Give a more helpful log message when you try to change ORPort via
1632 the controller: you should upgrade Tor if you want that to work.
1633 - We were failing to parse Tor versions that start with "Tor ".
1634 - Tolerate faulty streams better: when a stream fails for reason
1635 exitpolicy, stop assuming that the router is lying about his exit
1636 policy. When a stream fails for reason misc, allow it to retry just
1637 as if it was resolvefailed. When a stream has failed three times,
1638 reset its failure count so we can try again and get all three tries.
1641 Changes in version 0.1.1.10-alpha - 2005-12-11
1642 o Correctness bugfixes on 0.1.0.x:
1643 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
1644 corrupting the heap, losing FDs, or crashing when we need to resize
1645 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
1646 - Stop doing the complex voodoo overkill checking for insecure
1647 Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
1648 - When we were closing connections, there was a rare case that
1649 stomped on memory, triggering seg faults and asserts.
1650 - We were neglecting to unlink marked circuits from soon-to-close OR
1651 connections, which caused some rare scribbling on freed memory.
1652 - When we're deciding whether a stream has enough circuits around
1653 that can handle it, count the freshly dirty ones and not the ones
1654 that are so dirty they won't be able to handle it.
1655 - Recover better from TCP connections to Tor servers that are
1656 broken but don't tell you (it happens!); and rotate TLS
1657 connections once a week.
1658 - When we're expiring old circuits, we had a logic error that caused
1659 us to close new rendezvous circuits rather than old ones.
1660 - Fix a scary-looking but apparently harmless bug where circuits
1661 would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
1662 servers, and never switch to state CIRCUIT_STATE_OPEN.
1663 - When building with -static or on Solaris, we sometimes needed to
1665 - Give a useful message when people run Tor as the wrong user,
1666 rather than telling them to start chowning random directories.
1667 - We were failing to inform the controller about new .onion streams.
1669 o Security bugfixes on 0.1.0.x:
1670 - Refuse server descriptors if the fingerprint line doesn't match
1671 the included identity key. Tor doesn't care, but other apps (and
1672 humans) might actually be trusting the fingerprint line.
1673 - We used to kill the circuit when we receive a relay command we
1674 don't recognize. Now we just drop it.
1675 - Start obeying our firewall options more rigorously:
1676 . If we can't get to a dirserver directly, try going via Tor.
1677 . Don't ever try to connect (as a client) to a place our
1678 firewall options forbid.
1679 . If we specify a proxy and also firewall options, obey the
1680 firewall options even when we're using the proxy: some proxies
1681 can only proxy to certain destinations.
1682 - Fix a bug found by Lasse Overlier: when we were making internal
1683 circuits (intended to be cannibalized later for rendezvous and
1684 introduction circuits), we were picking them so that they had
1685 useful exit nodes. There was no need for this, and it actually
1686 aids some statistical attacks.
1687 - Start treating internal circuits and exit circuits separately.
1688 It's important to keep them separate because internal circuits
1689 have their last hops picked like middle hops, rather than like
1690 exit hops. So exiting on them will break the user's expectations.
1692 o Bugfixes on 0.1.1.x:
1693 - Take out the mis-feature where we tried to detect IP address
1694 flapping for people with DynDNS, and chose not to upload a new
1695 server descriptor sometimes.
1696 - Try to be compatible with OpenSSL 0.9.6 again.
1697 - Log fix: when the controller is logging about .onion addresses,
1698 sometimes it didn't include the ".onion" part of the address.
1699 - Don't try to modify options->DirServers internally -- if the
1700 user didn't specify any, just add the default ones directly to
1701 the trusted dirserver list. This fixes a bug where people running
1702 controllers would use SETCONF on some totally unrelated config
1703 option, and Tor would start yelling at them about changing their
1705 - Let the controller's redirectstream command specify a port, in
1706 case the controller wants to change that too.
1707 - When we requested a pile of server descriptors, we sometimes
1708 accidentally launched a duplicate request for the first one.
1709 - Bugfix for trackhostexits: write down the fingerprint of the
1710 chosen exit, not its nickname, because the chosen exit might not
1712 - When parsing foo.exit, if foo is unknown, and we are leaving
1713 circuits unattached, set the chosen_exit field and leave the
1714 address empty. This matters because controllers got confused
1716 - Directory authorities no longer try to download server
1717 descriptors that they know they will reject.
1719 o Features and updates:
1720 - Replace balanced trees with hash tables: this should make stuff
1721 significantly faster.
1722 - Resume using the AES counter-mode implementation that we ship,
1723 rather than OpenSSL's. Ours is significantly faster.
1724 - Many other CPU and memory improvements.
1725 - Add a new config option FastFirstHopPK (on by default) so clients
1726 do a trivial crypto handshake for their first hop, since TLS has
1727 already taken care of confidentiality and authentication.
1728 - Add a new config option TestSocks so people can see if their
1729 applications are using socks4, socks4a, socks5-with-ip, or
1730 socks5-with-hostname. This way they don't have to keep mucking
1731 with tcpdump and wondering if something got cached somewhere.
1732 - Warn when listening on a public address for socks. I suspect a
1733 lot of people are setting themselves up as open socks proxies,
1734 and they have no idea that jerks on the Internet are using them,
1735 since they simply proxy the traffic into the Tor network.
1736 - Add "private:*" as an alias in configuration for policies. Now
1737 you can simplify your exit policy rather than needing to list
1738 every single internal or nonroutable network space.
1739 - Add a new controller event type that allows controllers to get
1740 all server descriptors that were uploaded to a router in its role
1741 as authoritative dirserver.
1742 - Start shipping socks-extensions.txt, tor-doc-unix.html,
1743 tor-doc-server.html, and stylesheet.css in the tarball.
1744 - Stop shipping tor-doc.html in the tarball.
1747 Changes in version 0.1.1.9-alpha - 2005-11-15
1748 o Usability improvements:
1749 - Start calling it FooListenAddress rather than FooBindAddress,
1750 since few of our users know what it means to bind an address
1752 - Reduce clutter in server logs. We're going to try to make
1753 them actually usable now. New config option ProtocolWarnings that
1754 lets you hear about how _other Tors_ are breaking the protocol. Off
1756 - Divide log messages into logging domains. Once we put some sort
1757 of interface on this, it will let people looking at more verbose
1758 log levels specify the topics they want to hear more about.
1759 - Make directory servers return better http 404 error messages
1760 instead of a generic "Servers unavailable".
1761 - Check for even more Windows version flags when writing the platform
1762 string in server descriptors, and note any we don't recognize.
1763 - Clean up more of the OpenSSL memory when exiting, so we can detect
1764 memory leaks better.
1765 - Make directory authorities be non-versioning, non-naming by
1766 default. Now we can add new directory servers without requiring
1767 their operators to pay close attention.
1768 - When logging via syslog, include the pid whenever we provide
1769 a log entry. Suggested by Todd Fries.
1771 o Performance improvements:
1772 - Directory servers now silently throw away new descriptors that
1773 haven't changed much if the timestamps are similar. We do this to
1774 tolerate older Tor servers that upload a new descriptor every 15
1775 minutes. (It seemed like a good idea at the time.)
1776 - Inline bottleneck smartlist functions; use fast versions by default.
1777 - Add a "Map from digest to void*" abstraction digestmap_t so we
1778 can do less hex encoding/decoding. Use it in router_get_by_digest()
1779 to resolve a performance bottleneck.
1780 - Allow tor_gzip_uncompress to extract as much as possible from
1781 truncated compressed data. Try to extract as many
1782 descriptors as possible from truncated http responses (when
1783 DIR_PURPOSE_FETCH_ROUTERDESC).
1784 - Make circ->onionskin a pointer, not a static array. moria2 was using
1785 125000 circuit_t's after it had been up for a few weeks, which
1786 translates to 20+ megs of wasted space.
1787 - The private half of our EDH handshake keys are now chosen out
1788 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
1790 o Security improvements:
1791 - Start making directory caches retain old routerinfos, so soon
1792 clients can start asking by digest of descriptor rather than by
1793 fingerprint of server.
1794 - Add half our entropy from RAND_poll in OpenSSL. This knows how
1795 to use egd (if present), openbsd weirdness (if present), vms/os2
1796 weirdness (if we ever port there), and more in the future.
1798 o Bugfixes on 0.1.0.x:
1799 - Do round-robin writes of at most 16 kB per write. This might be
1800 more fair on loaded Tor servers, and it might resolve our Windows
1801 crash bug. It might also slow things down.
1802 - Our TLS handshakes were generating a single public/private
1803 keypair for the TLS context, rather than making a new one for
1804 each new connections. Oops. (But we were still rotating them
1805 periodically, so it's not so bad.)
1806 - When we were cannibalizing a circuit with a particular exit
1807 node in mind, we weren't checking to see if that exit node was
1808 already present earlier in the circuit. Oops.
1809 - When a Tor server's IP changes (e.g. from a dyndns address),
1810 upload a new descriptor so clients will learn too.
1811 - Really busy servers were keeping enough circuits open on stable
1812 connections that they were wrapping around the circuit_id
1813 space. (It's only two bytes.) This exposed a bug where we would
1814 feel free to reuse a circuit_id even if it still exists but has
1815 been marked for close. Try to fix this bug. Some bug remains.
1816 - If we would close a stream early (e.g. it asks for a .exit that
1817 we know would refuse it) but the LeaveStreamsUnattached config
1818 option is set by the controller, then don't close it.
1820 o Bugfixes on 0.1.1.8-alpha:
1821 - Fix a big pile of memory leaks, some of them serious.
1822 - Do not try to download a routerdesc if we would immediately reject
1824 - Resume inserting a newline between all router descriptors when
1825 generating (old style) signed directories, since our spec says
1827 - When providing content-type application/octet-stream for
1828 server descriptors using .z, we were leaving out the
1829 content-encoding header. Oops. (Everything tolerated this just
1830 fine, but that doesn't mean we need to be part of the problem.)
1831 - Fix a potential seg fault in getconf and getinfo using version 1
1832 of the controller protocol.
1833 - Avoid crash: do not check whether DirPort is reachable when we
1834 are suppressing it because of hibernation.
1835 - Make --hash-password not crash on exit.
1838 Changes in version 0.1.1.8-alpha - 2005-10-07
1839 o New features (major):
1840 - Clients don't download or use the directory anymore. Now they
1841 download and use network-statuses from the trusted dirservers,
1842 and fetch individual server descriptors as needed from mirrors.
1843 See dir-spec.txt for all the gory details.
1844 - Be more conservative about whether to advertise our DirPort.
1845 The main change is to not advertise if we're running at capacity
1846 and either a) we could hibernate or b) our capacity is low and
1847 we're using a default DirPort.
1848 - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
1850 o New features (minor):
1851 - Try to be smart about when to retry network-status and
1852 server-descriptor fetches. Still needs some tuning.
1853 - Stop parsing, storing, or using running-routers output (but
1854 mirrors still cache and serve it).
1855 - Consider a threshold of versioning dirservers (dirservers who have
1856 an opinion about which Tor versions are still recommended) before
1857 deciding whether to warn the user that he's obsolete.
1858 - Dirservers can now reject/invalidate by key and IP, with the
1859 config options "AuthDirInvalid" and "AuthDirReject". This is
1860 useful since currently we automatically list servers as running
1861 and usable even if we know they're jerks.
1862 - Provide dire warnings to any users who set DirServer; move it out
1863 of torrc.sample and into torrc.complete.
1864 - Add MyFamily to torrc.sample in the server section.
1865 - Add nicknames to the DirServer line, so we can refer to them
1866 without requiring all our users to memorize their IP addresses.
1867 - When we get an EOF or a timeout on a directory connection, note
1868 how many bytes of serverdesc we are dropping. This will help
1869 us determine whether it is smart to parse incomplete serverdesc
1871 - Add a new function to "change pseudonyms" -- that is, to stop
1872 using any currently-dirty circuits for new streams, so we don't
1873 link new actions to old actions. Currently it's only called on
1874 HUP (or SIGNAL RELOAD).
1875 - On sighup, if UseHelperNodes changed to 1, use new circuits.
1876 - Start using RAND_bytes rather than RAND_pseudo_bytes from
1877 OpenSSL. Also, reseed our entropy every hour, not just at
1878 startup. And entropy in 512-bit chunks, not 160-bit chunks.
1880 o Fixes on 0.1.1.7-alpha:
1881 - Nobody ever implemented EVENT_ADDRMAP for control protocol
1882 version 0, so don't let version 0 controllers ask for it.
1883 - If you requested something with too many newlines via the
1884 v1 controller protocol, you could crash tor.
1885 - Fix a number of memory leaks, including some pretty serious ones.
1886 - Re-enable DirPort testing again, so Tor servers will be willing
1887 to advertise their DirPort if it's reachable.
1888 - On TLS handshake, only check the other router's nickname against
1889 its expected nickname if is_named is set.
1891 o Fixes forward-ported from 0.1.0.15:
1892 - Don't crash when we don't have any spare file descriptors and we
1893 try to spawn a dns or cpu worker.
1894 - Make the numbers in read-history and write-history into uint64s,
1895 so they don't overflow and publish negatives in the descriptor.
1898 - For the OS X package's modified privoxy config file, comment
1899 out the "logfile" line so we don't log everything passed
1901 - We were whining about using socks4 or socks5-with-local-lookup
1902 even when it's an IP in the "virtual" range we designed exactly
1904 - We were leaking some memory every time the client changes IPs.
1905 - Never call free() on tor_malloc()d memory. This will help us
1906 use dmalloc to detect memory leaks.
1907 - Check for named servers when looking them up by nickname;
1908 warn when we'recalling a non-named server by its nickname;
1909 don't warn twice about the same name.
1910 - Try to list MyFamily elements by key, not by nickname, and warn
1911 if we've not heard of the server.
1912 - Make windows platform detection (uname equivalent) smarter.
1913 - It turns out sparc64 doesn't like unaligned access either.
1916 Changes in version 0.1.0.15 - 2005-09-23
1917 o Bugfixes on 0.1.0.x:
1918 - Reject ports 465 and 587 (spam targets) in default exit policy.
1919 - Don't crash when we don't have any spare file descriptors and we
1920 try to spawn a dns or cpu worker.
1921 - Get rid of IgnoreVersion undocumented config option, and make us
1922 only warn, never exit, when we're running an obsolete version.
1923 - Don't try to print a null string when your server finds itself to
1924 be unreachable and the Address config option is empty.
1925 - Make the numbers in read-history and write-history into uint64s,
1926 so they don't overflow and publish negatives in the descriptor.
1927 - Fix a minor memory leak in smartlist_string_remove().
1928 - We were only allowing ourselves to upload a server descriptor at
1929 most every 20 minutes, even if it changed earlier than that.
1930 - Clean up log entries that pointed to old URLs.
1933 Changes in version 0.1.1.7-alpha - 2005-09-14
1934 o Fixes on 0.1.1.6-alpha:
1935 - Exit servers were crashing when people asked them to make a
1936 connection to an address not in their exit policy.
1937 - Looking up a non-existent stream for a v1 control connection would
1939 - Fix a seg fault if we ask a dirserver for a descriptor by
1940 fingerprint but he doesn't know about him.
1941 - SETCONF was appending items to linelists, not clearing them.
1942 - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
1943 out and refuse the setconf if it would fail.
1944 - Downgrade the dirserver log messages when whining about
1948 - Add Peter Palfrader's check-tor script to tor/contrib/
1949 It lets you easily check whether a given server (referenced by
1950 nickname) is reachable by you.
1951 - Numerous changes to move towards client-side v2 directories. Not
1955 - If the user gave tor an odd number of command-line arguments,
1956 we were silently ignoring the last one. Now we complain and fail.
1957 [This wins the oldest-bug prize -- this bug has been present since
1958 November 2002, as released in Tor 0.0.0.]
1959 - Do not use unaligned memory access on alpha, mips, or mipsel.
1960 It *works*, but is very slow, so we treat them as if it doesn't.
1961 - Retry directory requests if we fail to get an answer we like
1962 from a given dirserver (we were retrying before, but only if
1963 we fail to connect).
1964 - When writing the RecommendedVersions line, sort them first.
1965 - When the client asked for a rendezvous port that the hidden
1966 service didn't want to provide, we were sending an IP address
1967 back along with the end cell. Fortunately, it was zero. But stop
1969 - Correct "your server is reachable" log entries to indicate that
1970 it was self-testing that told us so.
1973 Changes in version 0.1.1.6-alpha - 2005-09-09
1974 o Fixes on 0.1.1.5-alpha:
1975 - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
1976 - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
1977 - Fix bug with tor_memmem finding a match at the end of the string.
1978 - Make unit tests run without segfaulting.
1979 - Resolve some solaris x86 compile warnings.
1980 - Handle duplicate lines in approved-routers files without warning.
1981 - Fix bug where as soon as a server refused any requests due to his
1982 exit policy (e.g. when we ask for localhost and he tells us that's
1983 127.0.0.1 and he won't do it), we decided he wasn't obeying his
1984 exit policy using him for any exits.
1985 - Only do openssl hardware accelerator stuff if openssl version is
1988 o New controller features/fixes:
1989 - Add a "RESETCONF" command so you can set config options like
1990 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
1991 a config option in the torrc with no value, then it clears it
1992 entirely (rather than setting it to its default).
1993 - Add a "GETINFO config-file" to tell us where torrc is.
1994 - Avoid sending blank lines when GETINFO replies should be empty.
1995 - Add a QUIT command for the controller (for using it manually).
1996 - Fix a bug in SAVECONF that was adding default dirservers and
1997 other redundant entries to the torrc file.
1999 o Start on the new directory design:
2000 - Generate, publish, cache, serve new network-status format.
2001 - Publish individual descriptors (by fingerprint, by "all", and by
2003 - Publish client and server recommended versions separately.
2004 - Allow tor_gzip_uncompress() to handle multiple concatenated
2005 compressed strings. Serve compressed groups of router
2006 descriptors. The compression logic here could be more
2008 - Distinguish v1 authorities (all currently trusted directories)
2009 from v2 authorities (all trusted directories).
2010 - Change DirServers config line to note which dirs are v1 authorities.
2011 - Add configuration option "V1AuthoritativeDirectory 1" which
2012 moria1, moria2, and tor26 should set.
2013 - Remove option when getting directory cache to see whether they
2014 support running-routers; they all do now. Replace it with one
2015 to see whether caches support v2 stuff.
2018 - Dirservers now do their own external reachability testing of each
2019 Tor server, and only list them as running if they've been found to
2020 be reachable. We also send back warnings to the server's logs if
2021 it uploads a descriptor that we already believe is unreachable.
2022 - Implement exit enclaves: if we know an IP address for the
2023 destination, and there's a running Tor server at that address
2024 which allows exit to the destination, then extend the circuit to
2025 that exit first. This provides end-to-end encryption and end-to-end
2026 authentication. Also, if the user wants a .exit address or enclave,
2027 use 4 hops rather than 3, and cannibalize a general circ for it
2029 - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
2030 controller. Also, rotate dns and cpu workers if the controller
2031 changes options that will affect them; and initialize the dns
2032 worker cache tree whether or not we start out as a server.
2033 - Only upload a new server descriptor when options change, 18
2034 hours have passed, uptime is reset, or bandwidth changes a lot.
2035 - Check [X-]Forwarded-For headers in HTTP requests when generating
2036 log messages. This lets people run dirservers (and caches) behind
2037 Apache but still know which IP addresses are causing warnings.
2039 o Config option changes:
2040 - Replace (Fascist)Firewall* config options with a new
2041 ReachableAddresses option that understands address policies.
2042 For example, "ReachableAddresses *:80,*:443"
2043 - Get rid of IgnoreVersion undocumented config option, and make us
2044 only warn, never exit, when we're running an obsolete version.
2045 - Make MonthlyAccountingStart config option truly obsolete now.
2048 - Reject ports 465 and 587 in the default exit policy, since
2049 people have started using them for spam too.
2050 - It turns out we couldn't bootstrap a network since we added
2051 reachability detection in 0.1.0.1-rc. Good thing the Tor network
2052 has never gone down. Add an AssumeReachable config option to let
2053 servers and dirservers bootstrap. When we're trying to build a
2054 high-uptime or high-bandwidth circuit but there aren't enough
2055 suitable servers, try being less picky rather than simply failing.
2056 - Our logic to decide if the OR we connected to was the right guy
2057 was brittle and maybe open to a mitm for unverified routers.
2058 - We weren't cannibalizing circuits correctly for
2059 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
2060 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
2061 build those from scratch. This should make hidden services faster.
2062 - Predict required circuits better, with an eye toward making hidden
2063 services faster on the service end.
2064 - Retry streams if the exit node sends back a 'misc' failure. This
2065 should result in fewer random failures. Also, after failing
2066 from resolve failed or misc, reset the num failures, so we give
2067 it a fair shake next time we try.
2068 - Clean up the rendezvous warn log msgs, and downgrade some to info.
2069 - Reduce severity on logs about dns worker spawning and culling.
2070 - When we're shutting down and we do something like try to post a
2071 server descriptor or rendezvous descriptor, don't complain that
2072 we seem to be unreachable. Of course we are, we're shutting down.
2073 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
2074 We don't use them yet, but maybe one day our DNS resolver will be
2075 able to discover them.
2076 - Make ContactInfo mandatory for authoritative directory servers.
2077 - Require server descriptors to list IPv4 addresses -- hostnames
2078 are no longer allowed. This also fixes some potential security
2079 problems with people providing hostnames as their address and then
2080 preferentially resolving them to partition users.
2081 - Change log line for unreachability to explicitly suggest /etc/hosts
2082 as the culprit. Also make it clearer what IP address and ports we're
2083 testing for reachability.
2084 - Put quotes around user-supplied strings when logging so users are
2085 more likely to realize if they add bad characters (like quotes)
2087 - Let auth dir servers start without specifying an Address config
2089 - Make unit tests (and other invocations that aren't the real Tor)
2090 run without launching listeners, creating subdirectories, and so on.
2093 Changes in version 0.1.1.5-alpha - 2005-08-08
2094 o Bugfixes included in 0.1.0.14.
2096 o Bugfixes on 0.1.0.x:
2097 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
2098 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
2099 it would silently using ignore the 6668.
2102 Changes in version 0.1.0.14 - 2005-08-08
2103 o Bugfixes on 0.1.0.x:
2104 - Fix the other half of the bug with crypto handshakes
2106 - Fix an assert trigger if you send a 'signal term' via the
2107 controller when it's listening for 'event info' messages.
2110 Changes in version 0.1.1.4-alpha - 2005-08-04
2111 o Bugfixes included in 0.1.0.13.
2114 - Improve tor_gettimeofday() granularity on windows.
2115 - Make clients regenerate their keys when their IP address changes.
2116 - Implement some more GETINFO goodness: expose helper nodes, config
2117 options, getinfo keys.
2120 Changes in version 0.1.0.13 - 2005-08-04
2121 o Bugfixes on 0.1.0.x:
2122 - Fix a critical bug in the security of our crypto handshakes.
2123 - Fix a size_t underflow in smartlist_join_strings2() that made
2124 it do bad things when you hand it an empty smartlist.
2125 - Fix Windows installer to ship Tor license (thanks to Aphex for
2126 pointing out this oversight) and put a link to the doc directory
2128 - Explicitly set no-unaligned-access for sparc: it turns out the
2129 new gcc's let you compile broken code, but that doesn't make it
2133 Changes in version 0.1.1.3-alpha - 2005-07-23
2134 o Bugfixes on 0.1.1.2-alpha:
2135 - Fix a bug in handling the controller's "post descriptor"
2137 - Fix several bugs in handling the controller's "extend circuit"
2139 - Fix a bug in handling the controller's "stream status" event.
2140 - Fix an assert failure if we have a controller listening for
2141 circuit events and we go offline.
2142 - Re-allow hidden service descriptors to publish 0 intro points.
2143 - Fix a crash when generating your hidden service descriptor if
2144 you don't have enough intro points already.
2146 o New features on 0.1.1.2-alpha:
2147 - New controller function "getinfo accounting", to ask how
2148 many bytes we've used in this time period.
2149 - Experimental support for helper nodes: a lot of the risk from
2150 a small static adversary comes because users pick new random
2151 nodes every time they rebuild a circuit. Now users will try to
2152 stick to the same small set of entry nodes if they can. Not
2153 enabled by default yet.
2155 o Bugfixes on 0.1.0.12:
2156 - If you're an auth dir server, always publish your dirport,
2157 even if you haven't yet found yourself to be reachable.
2158 - Fix a size_t underflow in smartlist_join_strings2() that made
2159 it do bad things when you hand it an empty smartlist.
2162 Changes in version 0.1.0.12 - 2005-07-18
2163 o New directory servers:
2164 - tor26 has changed IP address.
2166 o Bugfixes on 0.1.0.x:
2167 - Fix a possible double-free in tor_gzip_uncompress().
2168 - When --disable-threads is set, do not search for or link against
2170 - Don't trigger an assert if an authoritative directory server
2171 claims its dirport is 0.
2172 - Fix bug with removing Tor as an NT service: some people were
2173 getting "The service did not return an error." Thanks to Matt
2177 Changes in version 0.1.1.2-alpha - 2005-07-15
2178 o New directory servers:
2179 - tor26 has changed IP address.
2181 o Bugfixes on 0.1.0.x, crashes/leaks:
2182 - Port the servers-not-obeying-their-exit-policies fix from
2184 - Fix an fd leak in start_daemon().
2185 - On Windows, you can't always reopen a port right after you've
2186 closed it. So change retry_listeners() to only close and re-open
2187 ports that have changed.
2188 - Fix a possible double-free in tor_gzip_uncompress().
2190 o Bugfixes on 0.1.0.x, usability:
2191 - When tor_socketpair() fails in Windows, give a reasonable
2192 Windows-style errno back.
2193 - Let people type "tor --install" as well as "tor -install" when
2195 want to make it an NT service.
2196 - NT service patch from Matt Edman to improve error messages.
2197 - When the controller asks for a config option with an abbreviated
2198 name, give the full name in our response.
2199 - Correct the man page entry on TrackHostExitsExpire.
2200 - Looks like we were never delivering deflated (i.e. compressed)
2201 running-routers lists, even when asked. Oops.
2202 - When --disable-threads is set, do not search for or link against
2205 o Bugfixes on 0.1.1.x:
2206 - Fix a seg fault with autodetecting which controller version is
2210 - New hidden service descriptor format: put a version in it, and
2211 let people specify introduction/rendezvous points that aren't
2212 in "the directory" (which is subjective anyway).
2213 - Allow the DEBUG controller event to work again. Mark certain log
2214 entries as "don't tell this to controllers", so we avoid cycles.
2217 Changes in version 0.1.0.11 - 2005-06-30
2218 o Bugfixes on 0.1.0.x:
2219 - Fix major security bug: servers were disregarding their
2220 exit policies if clients behaved unexpectedly.
2221 - Make OS X init script check for missing argument, so we don't
2222 confuse users who invoke it incorrectly.
2223 - Fix a seg fault in "tor --hash-password foo".
2224 - The MAPADDRESS control command was broken.
2227 Changes in version 0.1.1.1-alpha - 2005-06-29
2229 - Make OS X init script check for missing argument, so we don't
2230 confuse users who invoke it incorrectly.
2231 - Fix a seg fault in "tor --hash-password foo".
2232 - Fix a possible way to DoS dirservers.
2233 - When we complain that your exit policy implicitly allows local or
2234 private address spaces, name them explicitly so operators can
2236 - Make the log message less scary when all the dirservers are
2237 temporarily unreachable.
2238 - We were printing the number of idle dns workers incorrectly when
2242 - Revised controller protocol (version 1) that uses ascii rather
2243 than binary. Add supporting libraries in python and java so you
2244 can use the controller from your applications without caring how
2246 - Spiffy new support for crypto hardware accelerators. Can somebody
2250 Changes in version 0.0.9.10 - 2005-06-16
2251 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
2252 - Refuse relay cells that claim to have a length larger than the
2253 maximum allowed. This prevents a potential attack that could read
2254 arbitrary memory (e.g. keys) from an exit server's process
2258 Changes in version 0.1.0.10 - 2005-06-14
2259 o Allow a few EINVALs from libevent before dying. Warn on kqueue with
2260 libevent before 1.1a.
2263 Changes in version 0.1.0.9-rc - 2005-06-09
2265 - Reset buf->highwater every time buf_shrink() is called, not just on
2266 a successful shrink. This was causing significant memory bloat.
2267 - Fix buffer overflow when checking hashed passwords.
2268 - Security fix: if seeding the RNG on Win32 fails, quit.
2269 - Allow seeding the RNG on Win32 even when you're not running as
2271 - Disable threading on Solaris too. Something is wonky with it,
2272 cpuworkers, and reentrant libs.
2273 - Reenable the part of the code that tries to flush as soon as an
2274 OR outbuf has a full TLS record available. Perhaps this will make
2275 OR outbufs not grow as huge except in rare cases, thus saving lots
2276 of CPU time plus memory.
2277 - Reject malformed .onion addresses rather then passing them on as
2278 normal web requests.
2279 - Adapt patch from Adam Langley: fix possible memory leak in
2280 tor_lookup_hostname().
2281 - Initialize libevent later in the startup process, so the logs are
2282 already established by the time we start logging libevent warns.
2283 - Use correct errno on win32 if libevent fails.
2284 - Check and warn about known-bad/slow libevent versions.
2285 - Pay more attention to the ClientOnly config option.
2286 - Have torctl.in/tor.sh.in check for location of su binary (needed
2288 - Correct/add man page entries for LongLivedPorts, ExitPolicy,
2289 KeepalivePeriod, ClientOnly, NoPublish, HttpProxy, HttpsProxy,
2290 HttpProxyAuthenticator
2291 - Stop warning about sigpipes in the logs. We're going to
2292 pretend that getting these occassionally is normal and fine.
2293 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in
2295 installer screens; and don't put stuff into StartupItems unless
2296 the user asks you to.
2297 - Require servers that use the default dirservers to have public IP
2298 addresses. We have too many servers that are configured with private
2299 IPs and their admins never notice the log entries complaining that
2300 their descriptors are being rejected.
2301 - Add OSX uninstall instructions. An actual uninstall script will
2305 Changes in version 0.1.0.8-rc - 2005-05-23
2307 - It turns out that kqueue on OS X 10.3.9 was causing kernel
2308 panics. Disable kqueue on all OS X Tors.
2309 - Fix RPM: remove duplicate line accidentally added to the rpm
2311 - Disable threads on openbsd too, since its gethostaddr is not
2313 - Tolerate libevent 0.8 since it still works, even though it's
2315 - Enable building on Red Hat 9.0 again.
2316 - Allow the middle hop of the testing circuit to be running any
2317 version, now that most of them have the bugfix to let them connect
2318 to unknown servers. This will allow reachability testing to work
2319 even when 0.0.9.7-0.0.9.9 become obsolete.
2320 - Handle relay cells with rh.length too large. This prevents
2321 a potential attack that could read arbitrary memory (maybe even
2322 keys) from the exit server's process.
2323 - We screwed up the dirport reachability testing when we don't yet
2324 have a cached version of the directory. Hopefully now fixed.
2325 - Clean up router_load_single_router() (used by the controller),
2326 so it doesn't seg fault on error.
2327 - Fix a minor memory leak when somebody establishes an introduction
2328 point at your Tor server.
2329 - If a socks connection ends because read fails, don't warn that
2330 you're not sending a socks reply back.
2333 - Add HttpProxyAuthenticator config option too, that works like
2334 the HttpsProxyAuthenticator config option.
2335 - Encode hashed controller passwords in hex instead of base64,
2336 to make it easier to write controllers.
2339 Changes in version 0.1.0.7-rc - 2005-05-17
2341 - Fix a bug in the OS X package installer that prevented it from
2342 installing on Tiger.
2343 - Fix a script bug in the OS X package installer that made it
2344 complain during installation.
2345 - Find libevent even if it's hiding in /usr/local/ and your
2346 CFLAGS and LDFLAGS don't tell you to look there.
2347 - Be able to link with libevent as a shared library (the default
2348 after 1.0d), even if it's hiding in /usr/local/lib and even
2349 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
2350 assuming you're running gcc. Otherwise fail and give a useful
2352 - Fix a bug in the RPM packager: set home directory for _tor to
2353 something more reasonable when first installing.
2354 - Free a minor amount of memory that is still reachable on exit.
2357 Changes in version 0.1.0.6-rc - 2005-05-14
2359 - Implement --disable-threads configure option. Disable threads on
2360 netbsd by default, because it appears to have no reentrant resolver
2362 - Apple's OS X 10.4.0 ships with a broken kqueue. The new libevent
2363 release (1.1) detects and disables kqueue if it's broken.
2364 - Append default exit policy before checking for implicit internal
2365 addresses. Now we don't log a bunch of complaints on startup
2366 when using the default exit policy.
2367 - Some people were putting "Address " in their torrc, and they had
2368 a buggy resolver that resolved " " to 0.0.0.0. Oops.
2369 - If DataDir is ~/.tor, and that expands to /.tor, then default to
2370 LOCALSTATEDIR/tor instead.
2371 - Fix fragmented-message bug in TorControl.py.
2372 - Resolve a minor bug which would prevent unreachable dirports
2373 from getting suppressed in the published descriptor.
2374 - When the controller gave us a new descriptor, we weren't resolving
2375 it immediately, so Tor would think its address was 0.0.0.0 until
2376 we fetched a new directory.
2377 - Fix an uppercase/lowercase case error in suppressing a bogus
2378 libevent warning on some Linuxes.
2381 - Begin scrubbing sensitive strings from logs by default. Turn off
2382 the config option SafeLogging if you need to do debugging.
2383 - Switch to a new buffer management algorithm, which tries to avoid
2384 reallocing and copying quite as much. In first tests it looks like
2385 it uses *more* memory on average, but less cpu.
2386 - First cut at support for "create-fast" cells. Clients can use
2387 these when extending to their first hop, since the TLS already
2388 provides forward secrecy and authentication. Not enabled on
2390 - When dirservers refuse a router descriptor, we now log its
2391 contactinfo, platform, and the poster's IP address.
2392 - Call tor_free_all instead of connections_free_all after forking, to
2393 save memory on systems that need to fork.
2394 - Whine at you if you're a server and you don't set your contactinfo.
2395 - Implement --verify-config command-line option to check if your torrc
2396 is valid without actually launching Tor.
2397 - Rewrite address "serifos.exit" to "localhost.serifos.exit"
2398 rather than just rejecting it.
2401 Changes in version 0.1.0.5-rc - 2005-04-27
2403 - Stop trying to print a null pointer if an OR conn fails because
2404 we didn't like its cert.
2406 - Switch our internal buffers implementation to use a ring buffer,
2407 to hopefully improve performance for fast servers a lot.
2408 - Add HttpsProxyAuthenticator support (basic auth only), based
2409 on patch from Adam Langley.
2410 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
2411 the fast servers that have been joining lately.
2412 - Give hidden service accesses extra time on the first attempt,
2413 since 60 seconds is often only barely enough. This might improve
2415 - Improve performance for dirservers: stop re-parsing the whole
2416 directory every time you regenerate it.
2417 - Add more debugging info to help us find the weird dns freebsd
2418 pthreads bug; cleaner debug messages to help track future issues.
2421 Changes in version 0.0.9.9 - 2005-04-23
2422 o Bugfixes on 0.0.9.x:
2423 - If unofficial Tor clients connect and send weird TLS certs, our
2424 Tor server triggers an assert. This release contains a minimal
2425 backport from the broader fix that we put into 0.1.0.4-rc.
2428 Changes in version 0.1.0.4-rc - 2005-04-23
2430 - If unofficial Tor clients connect and send weird TLS certs, our
2431 Tor server triggers an assert. Stop asserting, and start handling
2432 TLS errors better in other situations too.
2433 - When the controller asks us to tell it about all the debug-level
2434 logs, it turns out we were generating debug-level logs while
2435 telling it about them, which turns into a bad loop. Now keep
2436 track of whether you're sending a debug log to the controller,
2437 and don't log when you are.
2438 - Fix the "postdescriptor" feature of the controller interface: on
2439 non-complete success, only say "done" once.
2441 - Clients are now willing to load balance over up to 2mB, not 1mB,
2442 of advertised bandwidth capacity.
2443 - Add a NoPublish config option, so you can be a server (e.g. for
2444 testing running Tor servers in other Tor networks) without
2445 publishing your descriptor to the primary dirservers.
2448 Changes in version 0.1.0.3-rc - 2005-04-08
2449 o Improvements on 0.1.0.2-rc:
2450 - Client now retries when streams end early for 'hibernating' or
2451 'resource limit' reasons, rather than failing them.
2452 - More automated handling for dirserver operators:
2453 - Automatically approve nodes running 0.1.0.2-rc or later,
2454 now that the the reachability detection stuff is working.
2455 - Now we allow two unverified servers with the same nickname
2456 but different keys. But if a nickname is verified, only that
2457 nickname+key are allowed.
2458 - If you're an authdirserver connecting to an address:port,
2459 and it's not the OR you were expecting, forget about that
2460 descriptor. If he *was* the one you were expecting, then forget
2461 about all other descriptors for that address:port.
2462 - Allow servers to publish descriptors from 12 hours in the future.
2463 Corollary: only whine about clock skew from the dirserver if
2464 he's a trusted dirserver (since now even verified servers could
2465 have quite wrong clocks).
2466 - Adjust maximum skew and age for rendezvous descriptors: let skew
2467 be 48 hours rather than 90 minutes.
2468 - Efficiency improvements:
2469 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
2470 it much faster to look up a circuit for each relay cell.
2471 - Remove most calls to assert_all_pending_dns_resolves_ok(),
2472 since they're eating our cpu on exit nodes.
2473 - Stop wasting time doing a case insensitive comparison for every
2474 dns name every time we do any lookup. Canonicalize the names to
2475 lowercase and be done with it.
2476 - Start sending 'truncated' cells back rather than destroy cells,
2477 if the circuit closes in front of you. This means we won't have
2478 to abandon partially built circuits.
2479 - Only warn once per nickname from add_nickname_list_to_smartlist
2480 per failure, so an entrynode or exitnode choice that's down won't
2482 - Put a note in the torrc about abuse potential with the default
2484 - Revise control spec and implementation to allow all log messages to
2485 be sent to controller with their severities intact (suggested by
2486 Matt Edman). Update TorControl to handle new log event types.
2487 - Provide better explanation messages when controller's POSTDESCRIPTOR
2489 - Stop putting nodename in the Platform string in server descriptors.
2490 It doesn't actually help, and it is confusing/upsetting some people.
2492 o Bugfixes on 0.1.0.2-rc:
2493 - We were printing the host mask wrong in exit policies in server
2494 descriptors. This isn't a critical bug though, since we were still
2495 obeying the exit policy internally.
2496 - Fix Tor when compiled with libevent but without pthreads: move
2497 connection_unregister() from _connection_free() to
2499 - Fix an assert trigger (already fixed in 0.0.9.x): when we have
2500 the rare mysterious case of accepting a conn on 0.0.0.0:0, then
2501 when we look through the connection array, we'll find any of the
2502 cpu/dnsworkers. This is no good.
2504 o Bugfixes on 0.0.9.8:
2505 - Fix possible bug on threading platforms (e.g. win32) which was
2506 leaking a file descriptor whenever a cpuworker or dnsworker died.
2507 - When using preferred entry or exit nodes, ignore whether the
2508 circuit wants uptime or capacity. They asked for the nodes, they
2510 - chdir() to your datadirectory at the *end* of the daemonize process,
2511 not the beginning. This was a problem because the first time you
2512 run tor, if your datadir isn't there, and you have runasdaemon set
2513 to 1, it will try to chdir to it before it tries to create it. Oops.
2514 - Handle changed router status correctly when dirserver reloads
2515 fingerprint file. We used to be dropping all unverified descriptors
2516 right then. The bug was hidden because we would immediately
2517 fetch a directory from another dirserver, which would include the
2518 descriptors we just dropped.
2519 - When we're connecting to an OR and he's got a different nickname/key
2520 than we were expecting, only complain loudly if we're an OP or a
2521 dirserver. Complaining loudly to the OR admins just confuses them.
2522 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
2523 artificially capped at 500kB.
2526 Changes in version 0.0.9.8 - 2005-04-07
2527 o Bugfixes on 0.0.9.x:
2528 - We have a bug that I haven't found yet. Sometimes, very rarely,
2529 cpuworkers get stuck in the 'busy' state, even though the cpuworker
2530 thinks of itself as idle. This meant that no new circuits ever got
2531 established. Here's a workaround to kill any cpuworker that's been
2532 busy for more than 100 seconds.
2535 Changes in version 0.1.0.2-rc - 2005-04-01
2536 o Bugfixes on 0.1.0.1-rc:
2537 - Fixes on reachability detection:
2538 - Don't check for reachability while hibernating.
2539 - If ORPort is reachable but DirPort isn't, still publish the
2540 descriptor, but zero out DirPort until it's found reachable.
2541 - When building testing circs for ORPort testing, use only
2542 high-bandwidth nodes, so fewer circuits fail.
2543 - Complain about unreachable ORPort separately from unreachable
2544 DirPort, so the user knows what's going on.
2545 - Make sure we only conclude ORPort reachability if we didn't
2546 initiate the conn. Otherwise we could falsely conclude that
2547 we're reachable just because we connected to the guy earlier
2548 and he used that same pipe to extend to us.
2549 - Authdirservers shouldn't do ORPort reachability detection,
2550 since they're in clique mode, so it will be rare to find a
2551 server not already connected to them.
2552 - When building testing circuits, always pick middle hops running
2553 Tor 0.0.9.7, so we avoid the "can't extend to unknown routers"
2554 bug. (This is a kludge; it will go away when 0.0.9.x becomes
2556 - When we decide we're reachable, actually publish our descriptor
2558 - Fix bug in redirectstream in the controller.
2559 - Fix the state descriptor strings so logs don't claim edge streams
2560 are in a different state than they actually are.
2561 - Use recent libevent features when possible (this only really affects
2562 win32 and osx right now, because the new libevent with these
2563 features hasn't been released yet). Add code to suppress spurious
2565 - Prevent possible segfault in connection_close_unattached_ap().
2566 - Fix newlines on torrc in win32.
2567 - Improve error msgs when tor-resolve fails.
2569 o Improvements on 0.0.9.x:
2570 - New experimental script tor/contrib/ExerciseServer.py (needs more
2571 work) that uses the controller interface to build circuits and
2572 fetch pages over them. This will help us bootstrap servers that
2573 have lots of capacity but haven't noticed it yet.
2574 - New experimental script tor/contrib/PathDemo.py (needs more work)
2575 that uses the controller interface to let you choose whole paths
2577 "<hostname>.<path,separated by dots>.<length of path>.path"
2578 - When we've connected to an OR and handshaked but didn't like
2579 the result, we were closing the conn without sending destroy
2580 cells back for pending circuits. Now send those destroys.
2583 Changes in version 0.0.9.7 - 2005-04-01
2584 o Bugfixes on 0.0.9.x:
2585 - Fix another race crash bug (thanks to Glenn Fink for reporting).
2586 - Compare identity to identity, not to nickname, when extending to
2587 a router not already in the directory. This was preventing us from
2588 extending to unknown routers. Oops.
2589 - Make sure to create OS X Tor user in <500 range, so we aren't
2590 creating actual system users.
2591 - Note where connection-that-hasn't-sent-end was marked, and fix
2592 a few really loud instances of this harmless bug (it's fixed more
2596 Changes in version 0.1.0.1-rc - 2005-03-28
2598 - Add reachability testing. Your Tor server will automatically try
2599 to see if its ORPort and DirPort are reachable from the outside,
2600 and it won't upload its descriptor until it decides they are.
2601 - Handle unavailable hidden services better. Handle slow or busy
2602 hidden services better.
2603 - Add support for CONNECTing through https proxies, with "HttpsProxy"
2605 - New exit policy: accept most low-numbered ports, rather than
2606 rejecting most low-numbered ports.
2607 - More Tor controller support (still experimental). See
2608 http://tor.eff.org/doc/control-spec.txt for all the new features,
2609 including signals to emulate unix signals from any platform;
2610 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
2611 closestream; closecircuit; etc.
2612 - Make nt services work and start on startup on win32 (based on
2613 patch by Matt Edman).
2614 - Add a new AddressMap config directive to rewrite incoming socks
2615 addresses. This lets you, for example, declare an implicit
2616 required exit node for certain sites.
2617 - Add a new TrackHostExits config directive to trigger addressmaps
2618 for certain incoming socks addresses -- for sites that break when
2619 your exit keeps changing (based on patch by Mike Perry).
2620 - Redo the client-side dns cache so it's just an addressmap too.
2621 - Notice when our IP changes, and reset stats/uptime/reachability.
2622 - When an application is using socks5, give him the whole variety of
2623 potential socks5 responses (connect refused, host unreachable, etc),
2624 rather than just "success" or "failure".
2625 - A more sane version numbering system. See
2626 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
2627 - New contributed script "exitlist": a simple python script to
2628 parse directories and find Tor nodes that exit to listed
2630 - New contributed script "privoxy-tor-toggle" to toggle whether
2631 Privoxy uses Tor. Seems to be configured for Debian by default.
2632 - Report HTTP reasons to client when getting a response from directory
2633 servers -- so you can actually know what went wrong.
2634 - New config option MaxAdvertisedBandwidth which lets you advertise
2635 a low bandwidthrate (to not attract as many circuits) while still
2636 allowing a higher bandwidthrate in reality.
2638 o Robustness/stability fixes:
2639 - Make Tor use Niels Provos's libevent instead of its current
2640 poll-but-sometimes-select mess. This will let us use faster async
2641 cores (like epoll, kpoll, and /dev/poll), and hopefully work better
2643 - pthread support now too. This was forced because when we forked,
2644 we ended up wasting a lot of duplicate ram over time. Also switch
2645 to foo_r versions of some library calls to allow reentry and
2647 - Better handling for heterogeneous / unreliable nodes:
2648 - Annotate circuits w/ whether they aim to contain high uptime nodes
2649 and/or high capacity nodes. When building circuits, choose
2651 - This means that every single node in an intro rend circuit,
2652 not just the last one, will have a minimum uptime.
2653 - New config option LongLivedPorts to indicate application streams
2654 that will want high uptime circuits.
2655 - Servers reset uptime when a dir fetch entirely fails. This
2656 hopefully reflects stability of the server's network connectivity.
2657 - If somebody starts his tor server in Jan 2004 and then fixes his
2658 clock, don't make his published uptime be a year.
2659 - Reset published uptime when you wake up from hibernation.
2660 - Introduce a notion of 'internal' circs, which are chosen without
2661 regard to the exit policy of the last hop. Intro and rendezvous
2662 circs must be internal circs, to avoid leaking information. Resolve
2663 and connect streams can use internal circs if they want.
2664 - New circuit pooling algorithm: make sure to have enough circs around
2665 to satisfy any predicted ports, and also make sure to have 2 internal
2666 circs around if we've required internal circs lately (and with high
2667 uptime if we've seen that lately too).
2668 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
2669 which describes how often we retry making new circuits if current
2670 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
2671 how long we're willing to make use of an already-dirty circuit.
2672 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
2673 circ as necessary, if there are any completed ones lying around
2674 when we try to launch one.
2675 - Make hidden services try to establish a rendezvous for 30 seconds,
2676 rather than for n (where n=3) attempts to build a circuit.
2677 - Change SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to a config option
2678 "ShutdownWaitLength".
2679 - Try to be more zealous about calling connection_edge_end when
2680 things go bad with edge conns in connection.c.
2681 - Revise tor-spec to add more/better stream end reasons.
2682 - Revise all calls to connection_edge_end to avoid sending "misc",
2683 and to take errno into account where possible.
2686 - Fix a race condition that can trigger an assert, when we have a
2687 pending create cell and an OR connection fails right then.
2688 - Fix several double-mark-for-close bugs, e.g. where we were finding
2689 a conn for a cell even if that conn is already marked for close.
2690 - Make sequence of log messages when starting on win32 with no config
2691 file more reasonable.
2692 - When choosing an exit node for a new non-internal circ, don't take
2693 into account whether it'll be useful for any pending x.onion
2694 addresses -- it won't.
2695 - Turn addr_policy_compare from a tristate to a quadstate; this should
2696 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
2697 for google.com" problem.
2698 - Make "platform" string in descriptor more accurate for Win32 servers,
2699 so it's not just "unknown platform".
2700 - Fix an edge case in parsing config options (thanks weasel).
2701 If they say "--" on the commandline, it's not an option.
2702 - Reject odd-looking addresses at the client (e.g. addresses that
2703 contain a colon), rather than having the server drop them because
2705 - tor-resolve requests were ignoring .exit if there was a working circuit
2706 they could use instead.
2707 - REUSEADDR on normal platforms means you can rebind to the port
2708 right after somebody else has let it go. But REUSEADDR on win32
2709 means to let you bind to the port _even when somebody else
2710 already has it bound_! So, don't do that on Win32.
2711 - Change version parsing logic: a version is "obsolete" if it is not
2712 recommended and (1) there is a newer recommended version in the
2713 same series, or (2) there are no recommended versions in the same
2714 series, but there are some recommended versions in a newer series.
2715 A version is "new" if it is newer than any recommended version in
2717 - Stop most cases of hanging up on a socks connection without sending
2721 - Require BandwidthRate to be at least 20kB/s for servers.
2722 - When a dirserver causes you to give a warn, mention which dirserver
2724 - New config option DirAllowPrivateAddresses for authdirservers.
2725 Now by default they refuse router descriptors that have non-IP or
2726 private-IP addresses.
2727 - Stop publishing socksport in the directory, since it's not
2728 actually meant to be public. For compatibility, publish a 0 there
2730 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
2731 smart" value, that is low for servers and high for clients.
2732 - If our clock jumps forward by 100 seconds or more, assume something
2733 has gone wrong with our network and abandon all not-yet-used circs.
2734 - Warn when exit policy implicitly allows local addresses.
2735 - If we get an incredibly skewed timestamp from a dirserver mirror
2736 that isn't a verified OR, don't warn -- it's probably him that's
2738 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
2739 cookies to disk and doesn't log each web request to disk. (Thanks
2740 to Brett Carrington for pointing this out.)
2741 - When a client asks us for a dir mirror and we don't have one,
2742 launch an attempt to get a fresh one.
2743 - If we're hibernating and we get a SIGINT, exit immediately.
2744 - Add --with-dmalloc ./configure option, to track memory leaks.
2745 - And try to free all memory on closing, so we can detect what
2747 - Cache local dns resolves correctly even when they're .exit
2749 - Give a better warning when some other server advertises an
2750 ORPort that is actually an apache running ssl.
2751 - Add "opt hibernating 1" to server descriptor to make it clearer
2752 whether the server is hibernating.
2755 Changes in version 0.0.9.6 - 2005-03-24
2756 o Bugfixes on 0.0.9.x (crashes and asserts):
2757 - Add new end stream reasons to maintainance branch. Fix bug where
2758 reason (8) could trigger an assert. Prevent bug from recurring.
2759 - Apparently win32 stat wants paths to not end with a slash.
2760 - Fix assert triggers in assert_cpath_layer_ok(), where we were
2761 blowing away the circuit that conn->cpath_layer points to, then
2762 checking to see if the circ is well-formed. Backport check to make
2763 sure we dont use the cpath on a closed connection.
2764 - Prevent circuit_resume_edge_reading_helper() from trying to package
2765 inbufs for marked-for-close streams.
2766 - Don't crash on hup if your options->address has become unresolvable.
2767 - Some systems (like OS X) sometimes accept() a connection and tell
2768 you the remote host is 0.0.0.0:0. If this happens, due to some
2769 other mis-features, we get confused; so refuse the conn for now.
2771 o Bugfixes on 0.0.9.x (other):
2772 - Fix harmless but scary "Unrecognized content encoding" warn message.
2773 - Add new stream error reason: TORPROTOCOL reason means "you are not
2774 speaking a version of Tor I understand; say bye-bye to your stream."
2775 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
2776 into the future, now that we are more tolerant of skew. This
2777 resolves a bug where a Tor server would refuse to cache a directory
2778 because all the directories it gets are too far in the future;
2779 yet the Tor server never logs any complaints about clock skew.
2780 - Mac packaging magic: make man pages useable, and do not overwrite
2781 existing torrc files.
2782 - Make OS X log happily to /var/log/tor/tor.log
2785 Changes in version 0.0.9.5 - 2005-02-22
2786 o Bugfixes on 0.0.9.x:
2787 - Fix an assert race at exit nodes when resolve requests fail.
2788 - Stop picking unverified dir mirrors--it only leads to misery.
2789 - Patch from Matt Edman to make NT services work better. Service
2790 support is still not compiled into the executable by default.
2791 - Patch from Dmitri Bely so the Tor service runs better under
2792 the win32 SYSTEM account.
2793 - Make tor-resolve actually work (?) on Win32.
2794 - Fix a sign bug when getrlimit claims to have 4+ billion
2795 file descriptors available.
2796 - Stop refusing to start when bandwidthburst == bandwidthrate.
2797 - When create cells have been on the onion queue more than five
2798 seconds, just send back a destroy and take them off the list.
2801 Changes in version 0.0.9.4 - 2005-02-03
2802 o Bugfixes on 0.0.9:
2803 - Fix an assert bug that took down most of our servers: when
2804 a server claims to have 1 GB of bandwidthburst, don't
2806 - Don't crash as badly if we have spawned the max allowed number
2807 of dnsworkers, or we're out of file descriptors.
2808 - Block more file-sharing ports in the default exit policy.
2809 - MaxConn is now automatically set to the hard limit of max
2810 file descriptors we're allowed (ulimit -n), minus a few for
2812 - Give a clearer message when servers need to raise their
2813 ulimit -n when they start running out of file descriptors.
2814 - SGI Compatibility patches from Jan Schaumann.
2815 - Tolerate a corrupt cached directory better.
2816 - When a dirserver hasn't approved your server, list which one.
2817 - Go into soft hibernation after 95% of the bandwidth is used,
2818 not 99%. This is especially important for daily hibernators who
2819 have a small accounting max. Hopefully it will result in fewer
2820 cut connections when the hard hibernation starts.
2821 - Load-balance better when using servers that claim more than
2822 800kB/s of capacity.
2823 - Make NT services work (experimental, only used if compiled in).
2826 Changes in version 0.0.9.3 - 2005-01-21
2827 o Bugfixes on 0.0.9:
2828 - Backport the cpu use fixes from main branch, so busy servers won't
2829 need as much processor time.
2830 - Work better when we go offline and then come back, or when we
2831 run Tor at boot before the network is up. We do this by
2832 optimistically trying to fetch a new directory whenever an
2833 application request comes in and we think we're offline -- the
2834 human is hopefully a good measure of when the network is back.
2835 - Backport some minimal hidserv bugfixes: keep rend circuits open as
2836 long as you keep using them; actually publish hidserv descriptors
2837 shortly after they change, rather than waiting 20-40 minutes.
2838 - Enable Mac startup script by default.
2839 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
2840 - When you update AllowUnverifiedNodes or FirewallPorts via the
2841 controller's setconf feature, we were always appending, never
2843 - When you update HiddenServiceDir via setconf, it was screwing up
2844 the order of reading the lines, making it fail.
2845 - Do not rewrite a cached directory back to the cache; otherwise we
2846 will think it is recent and not fetch a newer one on startup.
2847 - Workaround for webservers that lie about Content-Encoding: Tor
2848 now tries to autodetect compressed directories and compression
2849 itself. This lets us Proxypass dir fetches through apache.
2852 Changes in version 0.0.9.2 - 2005-01-04
2853 o Bugfixes on 0.0.9 (crashes and asserts):
2854 - Fix an assert on startup when the disk is full and you're logging
2856 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
2857 style address, then we'd crash.
2858 - Fix an assert trigger when the running-routers string we get from
2859 a dirserver is broken.
2860 - Make worker threads start and run on win32. Now win32 servers
2862 - Bandaid (not actually fix, but now it doesn't crash) an assert
2863 where the dns worker dies mysteriously and the main Tor process
2864 doesn't remember anything about the address it was resolving.
2866 o Bugfixes on 0.0.9 (Win32):
2867 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
2868 name out of the warning/assert messages.
2869 - Fix a superficial "unhandled error on read" bug on win32.
2870 - The win32 installer no longer requires a click-through for our
2871 license, since our Free Software license grants rights but does not
2873 - Win32: When connecting to a dirserver fails, try another one
2874 immediately. (This was already working for non-win32 Tors.)
2875 - Stop trying to parse $HOME on win32 when hunting for default
2877 - Make tor-resolve.c work on win32 by calling network_init().
2879 o Bugfixes on 0.0.9 (other):
2880 - Make 0.0.9.x build on Solaris again.
2881 - Due to a fencepost error, we were blowing away the \n when reporting
2882 confvalue items in the controller. So asking for multiple config
2883 values at once couldn't work.
2884 - When listing circuits that are pending on an opening OR connection,
2885 if we're an OR we were listing circuits that *end* at us as
2886 being pending on every listener, dns/cpu worker, etc. Stop that.
2887 - Dirservers were failing to create 'running-routers' or 'directory'
2888 strings if we had more than some threshold of routers. Fix them so
2889 they can handle any number of routers.
2890 - Fix a superficial "Duplicate mark for close" bug.
2891 - Stop checking for clock skew for OR connections, even for servers.
2892 - Fix a fencepost error that was chopping off the last letter of any
2893 nickname that is the maximum allowed nickname length.
2894 - Update URLs in log messages so they point to the new website.
2895 - Fix a potential problem in mangling server private keys while
2896 writing to disk (not triggered yet, as far as we know).
2897 - Include the licenses for other free software we include in Tor,
2898 now that we're shipping binary distributions more regularly.
2901 Changes in version 0.0.9.1 - 2004-12-15
2902 o Bugfixes on 0.0.9:
2903 - Make hibernation actually work.
2904 - Make HashedControlPassword config option work.
2905 - When we're reporting event circuit status to a controller,
2906 don't use the stream status code.
2909 Changes in version 0.0.9 - 2004-12-12
2911 - Clean up manpage and torrc.sample file.
2912 - Clean up severities and text of log warnings.
2914 - Make servers trigger an assert when they enter hibernation.
2917 Changes in version 0.0.9rc7 - 2004-12-08
2918 o Bugfixes on 0.0.9rc:
2919 - Fix a stack-trashing crash when an exit node begins hibernating.
2920 - Avoid looking at unallocated memory while considering which
2921 ports we need to build circuits to cover.
2922 - Stop a sigpipe: when an 'end' cell races with eof from the app,
2923 we shouldn't hold-open-until-flush if the eof arrived first.
2924 - Fix a bug with init_cookie_authentication() in the controller.
2925 - When recommending new-format log lines, if the upper bound is
2926 LOG_ERR, leave it implicit.
2928 o Bugfixes on 0.0.8.1:
2929 - Fix a whole slew of memory leaks.
2930 - Fix isspace() and friends so they still make Solaris happy
2931 but also so they don't trigger asserts on win32.
2932 - Fix parse_iso_time on platforms without strptime (eg win32).
2933 - win32: tolerate extra "readable" events better.
2934 - win32: when being multithreaded, leave parent fdarray open.
2935 - Make unit tests work on win32.
2938 Changes in version 0.0.9rc6 - 2004-12-06
2939 o Bugfixes on 0.0.9pre:
2940 - Clean up some more integer underflow opportunities (not exploitable
2942 - While hibernating, hup should not regrow our listeners.
2943 - Send an end to the streams we close when we hibernate, rather
2944 than just chopping them off.
2945 - React to eof immediately on non-open edge connections.
2947 o Bugfixes on 0.0.8.1:
2948 - Calculate timeout for waiting for a connected cell from the time
2949 we sent the begin cell, not from the time the stream started. If
2950 it took a long time to establish the circuit, we would time out
2951 right after sending the begin cell.
2952 - Fix router_compare_addr_to_addr_policy: it was not treating a port
2953 of * as always matching, so we were picking reject *:* nodes as
2954 exit nodes too. Oops.
2957 - New circuit building strategy: keep a list of ports that we've
2958 used in the past 6 hours, and always try to have 2 circuits open
2959 or on the way that will handle each such port. Seed us with port
2960 80 so web users won't complain that Tor is "slow to start up".
2961 - Make kill -USR1 dump more useful stats about circuits.
2962 - When warning about retrying or giving up, print the address, so
2963 the user knows which one it's talking about.
2964 - If you haven't used a clean circuit in an hour, throw it away,
2965 just to be on the safe side. (This means after 6 hours a totally
2966 unused Tor client will have no circuits open.)
2969 Changes in version 0.0.9rc5 - 2004-12-01
2970 o Bugfixes on 0.0.8.1:
2971 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
2972 - Let resolve conns retry/expire also, rather than sticking around
2974 - If we are using select, make sure we stay within FD_SETSIZE.
2976 o Bugfixes on 0.0.9pre:
2977 - Fix integer underflow in tor_vsnprintf() that may be exploitable,
2978 but doesn't seem to be currently; thanks to Ilja van Sprundel for
2980 - If anybody set DirFetchPostPeriod, give them StatusFetchPeriod
2981 instead. Impose minima and maxima for all *Period options; impose
2982 even tighter maxima for fetching if we are a caching dirserver.
2983 Clip rather than rejecting.
2984 - Fetch cached running-routers from servers that serve it (that is,
2985 authdirservers and servers running 0.0.9rc5-cvs or later.)
2988 - Accept *:706 (silc) in default exit policy.
2989 - Implement new versioning format for post 0.1.
2990 - Support "foo.nickname.exit" addresses, to let Alice request the
2991 address "foo" as viewed by exit node "nickname". Based on a patch
2993 - Make tor --version --version dump the cvs Id of every file.
2996 Changes in version 0.0.9rc4 - 2004-11-28
2997 o Bugfixes on 0.0.8.1:
2998 - Make windows sockets actually non-blocking (oops), and handle
2999 win32 socket errors better.
3001 o Bugfixes on 0.0.9rc1:
3002 - Actually catch the -USR2 signal.
3005 Changes in version 0.0.9rc3 - 2004-11-25
3006 o Bugfixes on 0.0.8.1:
3007 - Flush the log file descriptor after we print "Tor opening log file",
3008 so we don't see those messages days later.
3010 o Bugfixes on 0.0.9rc1:
3011 - Make tor-resolve work again.
3012 - Avoid infinite loop in tor-resolve if tor hangs up on it.
3013 - Fix an assert trigger for clients/servers handling resolves.
3016 Changes in version 0.0.9rc2 - 2004-11-24
3017 o Bugfixes on 0.0.9rc1:
3018 - I broke socks5 support while fixing the eof bug.
3019 - Allow unitless bandwidths and intervals; they default to bytes
3021 - New servers don't start out hibernating; they are active until
3022 they run out of bytes, so they have a better estimate of how
3023 long it takes, and so their operators can know they're working.
3026 Changes in version 0.0.9rc1 - 2004-11-23
3027 o Bugfixes on 0.0.8.1:
3028 - Finally fix a bug that's been plaguing us for a year:
3029 With high load, circuit package window was reaching 0. Whenever
3030 we got a circuit-level sendme, we were reading a lot on each
3031 socket, but only writing out a bit. So we would eventually reach
3032 eof. This would be noticed and acted on even when there were still
3033 bytes sitting in the inbuf.
3034 - When poll() is interrupted, we shouldn't believe the revents values.
3036 o Bugfixes on 0.0.9pre6:
3037 - Fix hibernate bug that caused pre6 to be broken.
3038 - Don't keep rephist info for routers that haven't had activity for
3039 24 hours. (This matters now that clients have keys, since we track
3041 - Never call close_temp_logs while validating log options.
3042 - Fix backslash-escaping on tor.sh.in and torctl.in.
3045 - Implement weekly/monthly/daily accounting: now you specify your
3046 hibernation properties by
3047 AccountingMax N bytes|KB|MB|GB|TB
3048 AccountingStart day|week|month [day] HH:MM
3049 Defaults to "month 1 0:00".
3050 - Let bandwidth and interval config options be specified as 5 bytes,
3051 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
3052 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
3053 get back to normal.)
3054 - If your requested entry or exit node has advertised bandwidth 0,
3056 - Be more greedy about filling up relay cells -- we try reading again
3057 once we've processed the stuff we read, in case enough has arrived
3058 to fill the last cell completely.
3059 - Apply NT service patch from Osamu Fujino. Still needs more work.
3062 Changes in version 0.0.9pre6 - 2004-11-15
3063 o Bugfixes on 0.0.8.1:
3064 - Fix assert failure on malformed socks4a requests.
3065 - Use identity comparison, not nickname comparison, to choose which
3066 half of circuit-ID-space each side gets to use. This is needed
3067 because sometimes we think of a router as a nickname, and sometimes
3068 as a hex ID, and we can't predict what the other side will do.
3069 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
3070 write() call will fail and we handle it there.
3071 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
3072 and smartlist_len, which are two major profiling offenders.
3074 o Bugfixes on 0.0.9pre5:
3075 - Fix a bug in read_all that was corrupting config files on windows.
3076 - When we're raising the max number of open file descriptors to
3077 'unlimited', don't log that we just raised it to '-1'.
3078 - Include event code with events, as required by control-spec.txt.
3079 - Don't give a fingerprint when clients do --list-fingerprint:
3080 it's misleading, because it will never be the same again.
3081 - Stop using strlcpy in tor_strndup, since it was slowing us
3083 - Remove warn on startup about missing cached-directory file.
3084 - Make kill -USR1 work again.
3085 - Hibernate if we start tor during the "wait for wakeup-time" phase
3086 of an accounting interval. Log our hibernation plans better.
3087 - Authoritative dirservers now also cache their directory, so they
3088 have it on start-up.
3091 - Fetch running-routers; cache running-routers; compress
3092 running-routers; serve compressed running-routers.z
3093 - Add NSI installer script contributed by J Doe.
3094 - Commit VC6 and VC7 workspace/project files.
3095 - Commit a tor.spec for making RPM files, with help from jbash.
3096 - Add contrib/torctl.in contributed by Glenn Fink.
3097 - Implement the control-spec's SAVECONF command, to write your
3098 configuration to torrc.
3099 - Get cookie authentication for the controller closer to working.
3100 - Include control-spec.txt in the tarball.
3101 - When set_conf changes our server descriptor, upload a new copy.
3102 But don't upload it too often if there are frequent changes.
3103 - Document authentication config in man page, and document signals
3105 - Clean up confusing parts of man page and torrc.sample.
3106 - Make expand_filename handle ~ and ~username.
3107 - Use autoconf to enable largefile support where necessary. Use
3108 ftello where available, since ftell can fail at 2GB.
3109 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
3110 log more informatively.
3111 - Give a slightly more useful output for "tor -h".
3112 - Refuse application socks connections to port 0.
3113 - Check clock skew for verified servers, but allow unverified
3114 servers and clients to have any clock skew.
3115 - Break DirFetchPostPeriod into:
3116 - DirFetchPeriod for fetching full directory,
3117 - StatusFetchPeriod for fetching running-routers,
3118 - DirPostPeriod for posting server descriptor,
3119 - RendPostPeriod for posting hidden service descriptors.
3120 - Make sure the hidden service descriptors are at a random offset
3121 from each other, to hinder linkability.
3124 Changes in version 0.0.9pre5 - 2004-11-09
3125 o Bugfixes on 0.0.9pre4:
3126 - Fix a seg fault in unit tests (doesn't affect main program).
3127 - Fix an assert bug where a hidden service provider would fail if
3128 the first hop of his rendezvous circuit was down.
3129 - Hidden service operators now correctly handle version 1 style
3130 INTRODUCE1 cells (nobody generates them still, so not a critical
3132 - If do_hup fails, actually notice.
3133 - Handle more errnos from accept() without closing the listener.
3134 Some OpenBSD machines were closing their listeners because
3135 they ran out of file descriptors.
3136 - Send resolve cells to exit routers that are running a new
3137 enough version of the resolve code to work right.
3138 - Better handling of winsock includes on non-MSV win32 compilers.
3139 - Some people had wrapped their tor client/server in a script
3140 that would restart it whenever it died. This did not play well
3141 with our "shut down if your version is obsolete" code. Now people
3142 don't fetch a new directory if their local cached version is
3144 - Make our autogen.sh work on ksh as well as bash.
3147 - Hibernation: New config option "AccountingMaxKB" lets you
3148 set how many KBytes per month you want to allow your server to
3149 consume. Rather than spreading those bytes out evenly over the
3150 month, we instead hibernate for some of the month and pop up
3151 at a deterministic time, work until the bytes are consumed, then
3152 hibernate again. Config option "MonthlyAccountingStart" lets you
3153 specify which day of the month your billing cycle starts on.
3154 - Control interface: a separate program can now talk to your
3155 client/server over a socket, and get/set config options, receive
3156 notifications of circuits and streams starting/finishing/dying,
3157 bandwidth used, etc. The next step is to get some GUIs working.
3158 Let us know if you want to help out. See doc/control-spec.txt .
3159 - Ship a contrib/tor-control.py as an example script to interact
3160 with the control port.
3161 - "tor --hash-password zzyxz" will output a salted password for
3162 use in authenticating to the control interface.
3163 - New log format in config:
3164 "Log minsev[-maxsev] stdout|stderr|syslog" or
3165 "Log minsev[-maxsev] file /var/foo"
3168 - DirPolicy config option, to let people reject incoming addresses
3169 from their dirserver.
3170 - "tor --list-fingerprint" will list your identity key fingerprint
3172 - Add "pass" target for RedirectExit, to make it easier to break
3173 out of a sequence of RedirectExit rules.
3174 - Clients now generate a TLS cert too, in preparation for having
3175 them act more like real nodes.
3176 - Ship src/win32/ in the tarball, so people can use it to build.
3177 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
3179 - New "router-status" line in directory, to better bind each verified
3180 nickname to its identity key.
3181 - Deprecate unofficial config option abbreviations, and abbreviations
3182 not on the command line.
3183 - Add a pure-C tor-resolve implementation.
3184 - Use getrlimit and friends to ensure we can reach MaxConn (currently
3185 1024) file descriptors.
3187 o Code security improvements, inspired by Ilja:
3188 - Replace sprintf with snprintf. (I think they were all safe, but
3190 - Replace strcpy/strncpy with strlcpy in more places.
3191 - Avoid strcat; use snprintf or strlcat instead.
3192 - snprintf wrapper with consistent (though not C99) overflow behavior.
3195 Changes in version 0.0.9pre4 - 2004-10-17
3196 o Bugfixes on 0.0.9pre3:
3197 - If the server doesn't specify an exit policy, use the real default
3198 exit policy, not reject *:*.
3199 - Ignore fascistfirewall when uploading/downloading hidden service
3200 descriptors, since we go through Tor for those; and when using
3201 an HttpProxy, since we assume it can reach them all.
3202 - When looking for an authoritative dirserver, use only the ones
3203 configured at boot. Don't bother looking in the directory.
3204 - The rest of the fix for get_default_conf_file() on older win32.
3205 - Make 'Routerfile' config option obsolete.
3208 - New 'MyFamily nick1,...' config option for a server to
3209 specify other servers that shouldn't be used in the same circuit
3210 with it. Only believed if nick1 also specifies us.
3211 - New 'NodeFamily nick1,nick2,...' config option for a client to
3212 specify nodes that it doesn't want to use in the same circuit.
3213 - New 'Redirectexit pattern address:port' config option for a
3214 server to redirect exit connections, e.g. to a local squid.
3217 Changes in version 0.0.9pre3 - 2004-10-13
3218 o Bugfixes on 0.0.8.1:
3219 - Better torrc example lines for dirbindaddress and orbindaddress.
3220 - Improved bounds checking on parsed ints (e.g. config options and
3221 the ones we find in directories.)
3222 - Better handling of size_t vs int, so we're more robust on 64
3224 - Fix the rest of the bug where a newly started OR would appear
3225 as unverified even after we've added his fingerprint and hupped
3227 - Fix a bug from 0.0.7: when read() failed on a stream, we would
3228 close it without sending back an end. So 'connection refused'
3229 would simply be ignored and the user would get no response.
3231 o Bugfixes on 0.0.9pre2:
3232 - Serving the cached-on-disk directory to people is bad. We now
3233 provide no directory until we've fetched a fresh one.
3234 - Workaround for bug on windows where cached-directories get crlf
3236 - Make get_default_conf_file() work on older windows too.
3237 - If we write a *:* exit policy line in the descriptor, don't write
3238 any more exit policy lines.
3241 - Use only 0.0.9pre1 and later servers for resolve cells.
3242 - Make the dirservers file obsolete.
3243 - Include a dir-signing-key token in directories to tell the
3244 parsing entity which key is being used to sign.
3245 - Remove the built-in bulky default dirservers string.
3246 - New config option "Dirserver %s:%d [fingerprint]", which can be
3247 repeated as many times as needed. If no dirservers specified,
3248 default to moria1,moria2,tor26.
3249 - Make moria2 advertise a dirport of 80, so people behind firewalls
3250 will be able to get a directory.
3251 - Http proxy support
3252 - Dirservers translate requests for http://%s:%d/x to /x
3253 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
3254 be routed through this host.
3255 - Clients ask for /tor/x rather than /x for new enough dirservers.
3256 This way we can one day coexist peacefully with apache.
3257 - Clients specify a "Host: %s%d" http header, to be compatible
3258 with more proxies, and so running squid on an exit node can work.
3261 Changes in version 0.0.8.1 - 2004-10-13
3263 - Fix a seg fault that can be triggered remotely for Tor
3264 clients/servers with an open dirport.
3265 - Fix a rare assert trigger, where routerinfos for entries in
3266 our cpath would expire while we're building the path.
3267 - Fix a bug in OutboundBindAddress so it (hopefully) works.
3268 - Fix a rare seg fault for people running hidden services on
3269 intermittent connections.
3270 - Fix a bug in parsing opt keywords with objects.
3271 - Fix a stale pointer assert bug when a stream detaches and
3273 - Fix a string format vulnerability (probably not exploitable)
3274 in reporting stats locally.
3275 - Fix an assert trigger: sometimes launching circuits can fail
3276 immediately, e.g. because too many circuits have failed recently.
3277 - Fix a compile warning on 64 bit platforms.
3280 Changes in version 0.0.9pre2 - 2004-10-03
3282 - Make fetching a cached directory work for 64-bit platforms too.
3283 - Make zlib.h a required header, not an optional header.
3286 Changes in version 0.0.9pre1 - 2004-10-01
3288 - Stop using separate defaults for no-config-file and
3289 empty-config-file. Now you have to explicitly turn off SocksPort,
3290 if you don't want it open.
3291 - Fix a bug in OutboundBindAddress so it (hopefully) works.
3292 - Improve man page to mention more of the 0.0.8 features.
3293 - Fix a rare seg fault for people running hidden services on
3294 intermittent connections.
3295 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
3297 - Fix more dns related bugs: send back resolve_failed and end cells
3298 more reliably when the resolve fails, rather than closing the
3299 circuit and then trying to send the cell. Also attach dummy resolve
3300 connections to a circuit *before* calling dns_resolve(), to fix
3301 a bug where cached answers would never be sent in RESOLVED cells.
3302 - When we run out of disk space, or other log writing error, don't
3303 crash. Just stop logging to that log and continue.
3304 - We were starting to daemonize before we opened our logs, so if
3305 there were any problems opening logs, we would complain to stderr,
3306 which wouldn't work, and then mysteriously exit.
3307 - Fix a rare bug where sometimes a verified OR would connect to us
3308 before he'd uploaded his descriptor, which would cause us to
3309 assign conn->nickname as though he's unverified. Now we look through
3310 the fingerprint list to see if he's there.
3311 - Fix a rare assert trigger, where routerinfos for entries in
3312 our cpath would expire while we're building the path.
3315 - Clients can ask dirservers for /dir.z to get a compressed version
3316 of the directory. Only works for servers running 0.0.9, of course.
3317 - Make clients cache directories and use them to seed their router
3318 lists at startup. This means clients have a datadir again.
3319 - Configuration infrastructure support for warning on obsolete
3321 - Respond to content-encoding headers by trying to uncompress as
3323 - Reply with a deflated directory when a client asks for "dir.z".
3324 We could use allow-encodings instead, but allow-encodings isn't
3325 specified in HTTP 1.0.
3326 - Raise the max dns workers from 50 to 100.
3327 - Discourage people from setting their dirfetchpostperiod more often
3328 than once per minute.
3329 - Protect dirservers from overzealous descriptor uploading -- wait
3330 10 seconds after directory gets dirty, before regenerating.
3333 Changes in version 0.0.8 - 2004-08-25
3334 o Port it to SunOS 5.9 / Athena
3337 Changes in version 0.0.8rc2 - 2004-08-20
3338 o Make it compile on cygwin again.
3339 o When picking unverified routers, skip those with low uptime and/or
3340 low bandwidth, depending on what properties you care about.
3343 Changes in version 0.0.8rc1 - 2004-08-18
3344 o Changes from 0.0.7.3:
3346 - Fix assert triggers: if the other side returns an address 0.0.0.0,
3347 don't put it into the client dns cache.
3348 - If a begin failed due to exit policy, but we believe the IP address
3349 should have been allowed, switch that router to exitpolicy reject *:*
3350 until we get our next directory.
3352 - Clients choose nodes proportional to advertised bandwidth.
3353 - Avoid using nodes with low uptime as introduction points.
3354 - Handle servers with dynamic IP addresses: don't replace
3355 options->Address with the resolved one at startup, and
3356 detect our address right before we make a routerinfo each time.
3357 - 'FascistFirewall' option to pick dirservers and ORs on specific
3358 ports; plus 'FirewallPorts' config option to tell FascistFirewall
3359 which ports are open. (Defaults to 80,443)
3360 - Be more aggressive about trying to make circuits when the network
3361 has changed (e.g. when you unsuspend your laptop).
3362 - Check for time skew on http headers; report date in response to
3364 - If the entrynode config line has only one node, don't pick it as
3366 - Add strict{entry|exit}nodes config options. If set to 1, then
3367 we refuse to build circuits that don't include the specified entry
3369 - OutboundBindAddress config option, to bind to a specific
3370 IP address for outgoing connect()s.
3371 - End truncated log entries (e.g. directories) with "[truncated]".
3373 o Patches to 0.0.8preX:
3375 - Patches to compile and run on win32 again (maybe)?
3376 - Fix crash when looking for ~/.torrc with no $HOME set.
3377 - Fix a race bug in the unit tests.
3378 - Handle verified/unverified name collisions better when new
3379 routerinfo's arrive in a directory.
3380 - Sometimes routers were getting entered into the stats before
3381 we'd assigned their identity_digest. Oops.
3382 - Only pick and establish intro points after we've gotten a
3385 - AllowUnverifiedNodes config option to let circuits choose no-name
3386 routers in entry,middle,exit,introduction,rendezvous positions.
3387 Allow middle and rendezvous positions by default.
3388 - Add a man page for tor-resolve.
3391 Changes in version 0.0.7.3 - 2004-08-12
3392 o Stop dnsworkers from triggering an assert failure when you
3393 ask them to resolve the host "".
3396 Changes in version 0.0.8pre3 - 2004-08-09
3397 o Changes from 0.0.7.2:
3398 - Allow multiple ORs with same nickname in routerlist -- now when
3399 people give us one identity key for a nickname, then later
3400 another, we don't constantly complain until the first expires.
3401 - Remember used bandwidth (both in and out), and publish 15-minute
3402 snapshots for the past day into our descriptor.
3403 - You can now fetch $DIRURL/running-routers to get just the
3404 running-routers line, not the whole descriptor list. (But
3405 clients don't use this yet.)
3406 - When people mistakenly use Tor as an http proxy, point them
3407 at the tor-doc.html rather than the INSTALL.
3408 - Remove our mostly unused -- and broken -- hex_encode()
3409 function. Use base16_encode() instead. (Thanks to Timo Lindfors
3410 for pointing out this bug.)
3411 - Rotate onion keys every 12 hours, not every 2 hours, so we have
3412 fewer problems with people using the wrong key.
3413 - Change the default exit policy to reject the default edonkey,
3414 kazaa, gnutella ports.
3415 - Add replace_file() to util.[ch] to handle win32's rename().
3417 o Changes from 0.0.8preX:
3418 - Fix two bugs in saving onion keys to disk when rotating, so
3419 hopefully we'll get fewer people using old onion keys.
3420 - Fix an assert error that was making SocksPolicy not work.
3421 - Be willing to expire routers that have an open dirport -- it's
3422 just the authoritative dirservers we want to not forget.
3423 - Reject tor-resolve requests for .onion addresses early, so we
3424 don't build a whole rendezvous circuit and then fail.
3425 - When you're warning a server that he's unverified, don't cry
3427 - Fix a race condition: don't try to extend onto a connection
3428 that's still handshaking.
3429 - For servers in clique mode, require the conn to be open before
3430 you'll choose it for your path.
3431 - Fix some cosmetic bugs about duplicate mark-for-close, lack of
3432 end relay cell, etc.
3433 - Measure bandwidth capacity over the last 24 hours, not just 12
3434 - Bugfix: authoritative dirservers were making and signing a new
3435 directory for each client, rather than reusing the cached one.
3438 Changes in version 0.0.8pre2 - 2004-08-04
3439 o Changes from 0.0.7.2:
3441 - Check directory signature _before_ you decide whether you're
3442 you're running an obsolete version and should exit.
3443 - Check directory signature _before_ you parse the running-routers
3444 list to decide who's running or verified.
3445 - Bugfixes and features:
3446 - Check return value of fclose while writing to disk, so we don't
3447 end up with broken files when servers run out of disk space.
3448 - Log a warning if the user uses an unsafe socks variant, so people
3449 are more likely to learn about privoxy or socat.
3450 - Dirservers now include RFC1123-style dates in the HTTP headers,
3451 which one day we will use to better detect clock skew.
3453 o Changes from 0.0.8pre1:
3454 - Make it compile without warnings again on win32.
3455 - Log a warning if you're running an unverified server, to let you
3456 know you might want to get it verified.
3457 - Only pick a default nickname if you plan to be a server.
3460 Changes in version 0.0.8pre1 - 2004-07-23
3462 - Made our unit tests compile again on OpenBSD 3.5, and tor
3463 itself compile again on OpenBSD on a sparc64.
3464 - We were neglecting milliseconds when logging on win32, so
3465 everything appeared to happen at the beginning of each second.
3468 - 'Extend' relay cell payloads now include the digest of the
3469 intended next hop's identity key. Now we can verify that we're
3470 extending to the right router, and also extend to routers we
3471 hadn't heard of before.
3474 - Tor nodes can now act as relays (with an advertised ORPort)
3475 without being manually verified by the dirserver operators.
3476 - Uploaded descriptors of unverified routers are now accepted
3477 by the dirservers, and included in the directory.
3478 - Verified routers are listed by nickname in the running-routers
3479 list; unverified routers are listed as "$<fingerprint>".
3480 - We now use hash-of-identity-key in most places rather than
3481 nickname or addr:port, for improved security/flexibility.
3482 - To avoid Sybil attacks, paths still use only verified servers.
3483 But now we have a chance to play around with hybrid approaches.
3484 - Nodes track bandwidth usage to estimate capacity (not used yet).
3485 - ClientOnly option for nodes that never want to become servers.
3486 - Directory caching.
3487 - "AuthoritativeDir 1" option for the official dirservers.
3488 - Now other nodes (clients and servers) will cache the latest
3489 directory they've pulled down.
3490 - They can enable their DirPort to serve it to others.
3491 - Clients will pull down a directory from any node with an open
3492 DirPort, and check the signature/timestamp correctly.
3493 - Authoritative dirservers now fetch directories from other
3494 authdirservers, to stay better synced.
3495 - Running-routers list tells who's down also, along with noting
3496 if they're verified (listed by nickname) or unverified (listed
3498 - Allow dirservers to serve running-router list separately.
3499 This isn't used yet.
3500 - ORs connect-on-demand to other ORs
3501 - If you get an extend cell to an OR you're not connected to,
3502 connect, handshake, and forward the create cell.
3503 - The authoritative dirservers stay connected to everybody,
3504 and everybody stays connected to 0.0.7 servers, but otherwise
3505 clients/servers expire unused connections after 5 minutes.
3506 - When servers get a sigint, they delay 30 seconds (refusing new
3507 connections) then exit. A second sigint causes immediate exit.
3508 - File and name management:
3509 - Look for .torrc if no CONFDIR "torrc" is found.
3510 - If no datadir is defined, then choose, make, and secure ~/.tor
3512 - If torrc not found, exitpolicy reject *:*.
3513 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
3514 - If no nickname is defined, derive default from hostname.
3515 - Rename secret key files, e.g. identity.key -> secret_id_key,
3516 to discourage people from mailing their identity key to tor-ops.
3517 - Refuse to build a circuit before the directory has arrived --
3518 it won't work anyway, since you won't know the right onion keys
3520 - Try other dirservers immediately if the one you try is down. This
3521 should tolerate down dirservers better now.
3522 - Parse tor version numbers so we can do an is-newer-than check
3523 rather than an is-in-the-list check.
3524 - New socks command 'resolve', to let us shim gethostbyname()
3526 - A 'tor_resolve' script to access the socks resolve functionality.
3527 - A new socks-extensions.txt doc file to describe our
3528 interpretation and extensions to the socks protocols.
3529 - Add a ContactInfo option, which gets published in descriptor.
3530 - Publish OR uptime in descriptor (and thus in directory) too.
3531 - Write tor version at the top of each log file
3532 - New docs in the tarball:
3534 - Document that you should proxy your SSL traffic too.
3537 Changes in version 0.0.7.2 - 2004-07-07
3538 o A better fix for the 0.0.0.0 problem, that will hopefully
3539 eliminate the remaining related assertion failures.
3542 Changes in version 0.0.7.1 - 2004-07-04
3543 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
3544 since internally we use 0.0.0.0 to signify "not yet resolved".
3547 Changes in version 0.0.7 - 2004-06-07
3548 o Updated the man page to reflect the new features.
3551 Changes in version 0.0.7rc2 - 2004-06-06
3552 o Changes from 0.0.7rc1:
3553 - Make it build on Win32 again.
3554 o Changes from 0.0.6.2:
3555 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
3559 Changes in version 0.0.7rc1 - 2004-06-02
3561 - On sighup, we were adding another log without removing the first
3562 one. So log messages would get duplicated n times for n sighups.
3563 - Several cases of using a connection after we'd freed it. The
3564 problem was that connections that are pending resolve are in both
3565 the pending_resolve tree, and also the circuit's resolving_streams
3566 list. When you want to remove one, you must remove it from both.
3567 - Fix a double-mark-for-close where an end cell arrived for a
3568 resolving stream, and then the resolve failed.
3569 - Check directory signatures based on name of signer, not on whom
3570 we got the directory from. This will let us cache directories more
3573 - Crank up some of our constants to handle more users.
3576 Changes in version 0.0.7pre1 - 2004-06-02
3577 o Fixes for crashes and other obnoxious bugs:
3578 - Fix an epipe bug: sometimes when directory connections failed
3579 to connect, we would give them a chance to flush before closing
3581 - When we detached from a circuit because of resolvefailed, we
3582 would immediately try the same circuit twice more, and then
3583 give up on the resolve thinking we'd tried three different
3585 - Limit the number of intro circuits we'll attempt to build for a
3586 hidden service per 15-minute period.
3587 - Check recommended-software string *early*, before actually parsing
3588 the directory. Thus we can detect an obsolete version and exit,
3589 even if the new directory format doesn't parse.
3590 o Fixes for security bugs:
3591 - Remember which nodes are dirservers when you startup, and if a
3592 random OR enables his dirport, don't automatically assume he's
3593 a trusted dirserver.
3595 - Directory connections were asking the wrong poll socket to
3596 start writing, and not asking themselves to start writing.
3597 - When we detached from a circuit because we sent a begin but
3598 didn't get a connected, we would use it again the first time;
3599 but after that we would correctly switch to a different one.
3600 - Stop warning when the first onion decrypt attempt fails; they
3601 will sometimes legitimately fail now that we rotate keys.
3602 - Override unaligned-access-ok check when $host_cpu is ia64 or
3603 arm. Apparently they allow it but the kernel whines.
3604 - Dirservers try to reconnect periodically too, in case connections
3606 - Fix some memory leaks in directory servers.
3607 - Allow backslash in Win32 filenames.
3608 - Made Tor build complain-free on FreeBSD, hopefully without
3609 breaking other BSD builds. We'll see.
3611 - Doxygen markup on all functions and global variables.
3612 - Make directory functions update routerlist, not replace it. So
3613 now directory disagreements are not so critical a problem.
3614 - Remove the upper limit on number of descriptors in a dirserver's
3615 directory (not that we were anywhere close).
3616 - Allow multiple logfiles at different severity ranges.
3617 - Allow *BindAddress to specify ":port" rather than setting *Port
3618 separately. Allow multiple instances of each BindAddress config
3619 option, so you can bind to multiple interfaces if you want.
3620 - Allow multiple exit policy lines, which are processed in order.
3621 Now we don't need that huge line with all the commas in it.
3622 - Enable accept/reject policies on SOCKS connections, so you can bind
3623 to 0.0.0.0 but still control who can use your OP.
3626 Changes in version 0.0.6.2 - 2004-05-16
3627 o Our integrity-checking digest was checking only the most recent cell,
3628 not the previous cells like we'd thought.
3629 Thanks to Stefan Mark for finding the flaw!
3632 Changes in version 0.0.6.1 - 2004-05-06
3633 o Fix two bugs in our AES counter-mode implementation (this affected
3634 onion-level stream encryption, but not TLS-level). It turns
3635 out we were doing something much more akin to a 16-character
3636 polyalphabetic cipher. Oops.
3637 Thanks to Stefan Mark for finding the flaw!
3638 o Retire moria3 as a directory server, and add tor26 as a directory
3642 Changes in version 0.0.6 - 2004-05-02
3646 Changes in version 0.0.6rc4 - 2004-05-01
3647 o Update the built-in dirservers list to use the new directory format
3648 o Fix a rare seg fault: if a node offering a hidden service attempts
3649 to build a circuit to Alice's rendezvous point and fails before it
3650 reaches the last hop, it retries with a different circuit, but
3652 o Handle windows socket errors correctly.
3655 Changes in version 0.0.6rc3 - 2004-04-28
3656 o Don't expire non-general excess circuits (if we had enough
3657 circuits open, we were expiring rendezvous circuits -- even
3658 when they had a stream attached. oops.)
3659 o Fetch randomness from /dev/urandom better (not via fopen/fread)
3660 o Better debugging for tls errors
3661 o Some versions of openssl have an SSL_pending function that erroneously
3662 returns bytes when there is a non-application record pending.
3663 o Set Content-Type on the directory and hidserv descriptor.
3664 o Remove IVs from cipher code, since AES-ctr has none.
3665 o Win32 fixes. Tor now compiles on win32 with no warnings/errors.
3666 o We were using an array of length zero in a few places.
3667 o win32's gethostbyname can't resolve an IP to an IP.
3668 o win32's close can't close a socket.
3671 Changes in version 0.0.6rc2 - 2004-04-26
3672 o Fix a bug where we were closing tls connections intermittently.
3673 It turns out openssl keeps its errors around -- so if an error
3674 happens, and you don't ask about it, and then another openssl
3675 operation happens and succeeds, and you ask if there was an error,
3676 it tells you about the first error. Fun fun.
3677 o Fix a bug that's been lurking since 27 may 03 (!)
3678 When passing back a destroy cell, we would use the wrong circ id.
3679 'Mostly harmless', but still worth fixing.
3680 o Since we don't support truncateds much, don't bother sending them;
3681 just close the circ.
3682 o check for <machine/limits.h> so we build on NetBSD again (I hope).
3683 o don't crash if a conn that sent a begin has suddenly lost its circuit
3684 (this was quite rare).
3687 Changes in version 0.0.6rc1 - 2004-04-25
3688 o We now rotate link (tls context) keys and onion keys.
3689 o CREATE cells now include oaep padding, so you can tell
3690 if you decrypted them correctly.
3691 o Add bandwidthburst to server descriptor.
3692 o Directories now say which dirserver signed them.
3693 o Use a tor_assert macro that logs failed assertions too.
3696 Changes in version 0.0.6pre5 - 2004-04-18
3697 o changes from 0.0.6pre4:
3698 - make tor build on broken freebsd 5.2 installs
3699 - fix a failed assert when you try an intro point, get a nack, and try
3700 a second one and it works.
3701 - when alice uses a port that the hidden service doesn't accept,
3702 it now sends back an end cell (denied by exit policy). otherwise
3703 alice would just have to wait to time out.
3704 - fix another rare bug: when we had tried all the intro
3705 points for a hidden service, we fetched the descriptor
3706 again, but we left our introcirc thinking it had already
3707 sent an intro, so it kept waiting for a response...
3708 - bugfix: when you sleep your hidden-service laptop, as soon
3709 as it wakes up it tries to upload a service descriptor, but
3710 socketpair fails for some reason (localhost not up yet?).
3711 now we simply give up on that upload, and we'll try again later.
3712 i'd still like to find the bug though.
3713 - if an intro circ waiting for an ack dies before getting one, then
3715 - we were reusing stale service descriptors and refetching usable
3719 Changes in version 0.0.6pre4 - 2004-04-14
3720 o changes from 0.0.6pre3:
3721 - when bob fails to connect to the rendezvous point, and his
3722 circ didn't fail because of the rendezvous point itself, then
3723 he retries a couple of times
3724 - we expire introduction and rendezvous circs more thoroughly
3725 (sometimes they were hanging around forever)
3726 - we expire unattached rendezvous streams that have been around
3727 too long (they were sticking around forever).
3728 - fix a measly fencepost error that was crashing everybody with
3732 Changes in version 0.0.6pre3 - 2004-04-14
3733 o changes from 0.0.6pre2:
3734 - make hup work again
3735 - fix some memory leaks for dirservers
3736 - allow more skew in rendezvous descriptor timestamps, to help
3737 handle people like blanu who don't know what time it is
3738 - normal circs are 3 hops, but some rend/intro circs are 4, if
3739 the initiator doesn't get to choose the last hop
3740 - send acks for introductions, so alice can know whether to try
3742 - bob publishes intro points more correctly
3743 o changes from 0.0.5:
3744 - fix an assert trigger that's been plaguing us since the days
3745 of 0.0.2prexx (thanks weasel!)
3746 - retry stream correctly when we fail to connect because of
3747 exit-policy-reject (should try another) or can't-resolve-address
3748 (also should try another, because dns on random internet servers
3750 - when we hup a dirserver and we've *removed* a server from the
3751 approved-routers list, now we remove that server from the
3752 in-memory directories too
3755 Changes in version 0.0.6pre2 - 2004-04-08
3756 o We fixed our base32 implementation. Now it works on all architectures.
3759 Changes in version 0.0.6pre1 - 2004-04-08
3761 - Hidden services and rendezvous points are implemented. Go to
3762 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
3763 hidden services. (This only works via a socks4a proxy such as
3764 Privoxy, and currently it's quite slow.)
3767 Changes in version 0.0.5 - 2004-03-30
3771 Changes in version 0.0.5rc3 - 2004-03-29
3772 o Install torrc as torrc.sample -- we no longer clobber your
3774 o Re-enable recommendedversion checking (we broke it in rc2, oops)
3775 o Add in a 'notice' log level for things the operator should hear
3776 but that aren't warnings
3779 Changes in version 0.0.5rc2 - 2004-03-29
3780 o Hold socks connection open until reply is flushed (if possible)
3781 o Make exit nodes resolve IPs to IPs immediately, rather than asking
3782 the dns farm to do it.
3783 o Fix c99 aliasing warnings in rephist.c
3784 o Don't include server descriptors that are older than 24 hours in the
3786 o Give socks 'reject' replies their whole 15s to attempt to flush,
3787 rather than seeing the 60s timeout and assuming the flush had failed.
3788 o Clean automake droppings from the cvs repository
3791 Changes in version 0.0.5rc1 - 2004-03-28
3792 o Fix mangled-state bug in directory fetching (was causing sigpipes).
3793 o Only build circuits after we've fetched the directory: clients were
3794 using only the directory servers before they'd fetched a directory.
3795 This also means longer startup time; so it goes.
3796 o Fix an assert trigger where an OP would fail to handshake, and we'd
3797 expect it to have a nickname.
3798 o Work around a tsocks bug: do a socks reject when AP connection dies
3799 early, else tsocks goes into an infinite loop.
3802 Changes in version 0.0.4 - 2004-03-26
3803 o When connecting to a dirserver or OR and the network is down,
3807 Changes in version 0.0.3 - 2004-03-26
3808 o Warn and fail if server chose a nickname with illegal characters
3809 o Port to Solaris and Sparc:
3810 - include missing header fcntl.h
3811 - have autoconf find -lsocket -lnsl automatically
3812 - deal with hardware word alignment
3813 - make uname() work (solaris has a different return convention)
3814 - switch from using signal() to sigaction()
3815 o Preliminary work on reputation system:
3816 - Keep statistics on success/fail of connect attempts; they're published
3817 by kill -USR1 currently.
3818 - Add a RunTesting option to try to learn link state by creating test
3819 circuits, even when SocksPort is off.
3820 - Remove unused open circuits when there are too many.
3823 Changes in version 0.0.2 - 2004-03-19
3824 - Include strlcpy and strlcat for safer string ops
3825 - define INADDR_NONE so we compile (but still not run) on solaris
3828 Changes in version 0.0.2pre27 - 2004-03-14
3830 - Allow internal tor networks (we were rejecting internal IPs,
3831 now we allow them if they're set explicitly).
3832 - And fix a few endian issues.
3835 Changes in version 0.0.2pre26 - 2004-03-14
3837 - If a stream times out after 15s without a connected cell, don't
3838 try that circuit again: try a new one.
3839 - Retry streams at most 4 times. Then give up.
3840 - When a dirserver gets a descriptor from an unknown router, it
3841 logs its fingerprint (so the dirserver operator can choose to
3842 accept it even without mail from the server operator).
3843 - Inform unapproved servers when we reject their descriptors.
3844 - Make tor build on Windows again. It works as a client, who knows
3846 - Clearer instructions in the torrc for how to set up a server.
3847 - Be more efficient about reading fd's when our global token bucket
3848 (used for rate limiting) becomes empty.
3850 - Stop asserting that computers always go forward in time. It's
3852 - When we sent a cell (e.g. destroy) and then marked an OR connection
3853 expired, we might close it before finishing a flush if the other
3854 side isn't reading right then.
3855 - Don't allow dirservers to start if they haven't defined
3857 - We were caching transient dns failures. Oops.
3858 - Prevent servers from publishing an internal IP as their address.
3859 - Address a strcat vulnerability in circuit.c
3862 Changes in version 0.0.2pre25 - 2004-03-04
3864 - Put the OR's IP in its router descriptor, not its fqdn. That way
3865 we'll stop being stalled by gethostbyname for nodes with flaky dns,
3868 - If the user typed in an address that didn't resolve, the server
3872 Changes in version 0.0.2pre24 - 2004-03-03
3874 - Fix an assertion failure in dns.c, where we were trying to dequeue
3875 a pending dns resolve even if it wasn't pending
3876 - Fix a spurious socks5 warning about still trying to write after the
3877 connection is finished.
3878 - Hold certain marked_for_close connections open until they're finished
3879 flushing, rather than losing bytes by closing them too early.
3880 - Correctly report the reason for ending a stream
3881 - Remove some duplicate calls to connection_mark_for_close
3882 - Put switch_id and start_daemon earlier in the boot sequence, so it
3883 will actually try to chdir() to options.DataDirectory
3884 - Make 'make test' exit(1) if a test fails; fix some unit tests
3885 - Make tor fail when you use a config option it doesn't know about,
3886 rather than warn and continue.
3887 - Make --version work
3888 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
3891 Changes in version 0.0.2pre23 - 2004-02-29
3893 - Print a statement when the first circ is finished, so the user
3895 - If a relay cell is unrecognized at the end of the circuit,
3896 send back a destroy. (So attacks to mutate cells are more
3898 - New config option 'excludenodes' to avoid certain nodes for circuits.
3899 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
3900 so you can collect coredumps there.
3902 - Fix a bug in tls flushing where sometimes data got wedged and
3903 didn't flush until more data got sent. Hopefully this bug was
3904 a big factor in the random delays we were seeing.
3905 - Make 'connected' cells include the resolved IP, so the client
3906 dns cache actually gets populated.
3907 - Disallow changing from ORPort=0 to ORPort>0 on hup.
3908 - When we time-out on a stream and detach from the circuit, send an
3909 end cell down it first.
3910 - Only warn about an unknown router (in exitnodes, entrynodes,
3911 excludenodes) after we've fetched a directory.
3914 Changes in version 0.0.2pre22 - 2004-02-26
3916 - Servers publish less revealing uname information in descriptors.
3917 - More memory tracking and assertions, to crash more usefully when
3919 - If the default torrc isn't there, just use some default defaults.
3920 Plus provide an internal dirservers file if they don't have one.
3921 - When the user tries to use Tor as an http proxy, give them an http
3922 501 failure explaining that we're a socks proxy.
3923 - Dump a new router.desc on hup, to help confused people who change
3924 their exit policies and then wonder why router.desc doesn't reflect
3926 - Clean up the generic tor.sh init script that we ship with.
3928 - If the exit stream is pending on the resolve, and a destroy arrives,
3929 then the stream wasn't getting removed from the pending list. I
3930 think this was the one causing recent server crashes.
3931 - Use a more robust poll on OSX 10.3, since their poll is flaky.
3932 - When it couldn't resolve any dirservers, it was useless from then on.
3933 Now it reloads the RouterFile (or default dirservers) if it has no
3935 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
3936 many users don't even *have* a /usr/local/sbin/.
3939 Changes in version 0.0.2pre21 - 2004-02-18
3941 - There's a ChangeLog file that actually reflects the changelog.
3942 - There's a 'torify' wrapper script, with an accompanying
3943 tor-tsocks.conf, that simplifies the process of using tsocks for
3944 tor. It even has a man page.
3945 - The tor binary gets installed to sbin rather than bin now.
3946 - Retry streams where the connected cell hasn't arrived in 15 seconds
3947 - Clean up exit policy handling -- get the default out of the torrc,
3948 so we can update it without forcing each server operator to fix
3950 - Allow imaps and pop3s in default exit policy
3952 - Prevent picking middleman nodes as the last node in the circuit
3955 Changes in version 0.0.2pre20 - 2004-01-30
3957 - We now have a deb package, and it's in debian unstable. Go to
3959 - I've split the TotalBandwidth option into BandwidthRate (how many
3960 bytes per second you want to allow, long-term) and
3961 BandwidthBurst (how many bytes you will allow at once before the cap
3962 kicks in). This better token bucket approach lets you, say, set
3963 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
3964 performance while not exceeding your monthly bandwidth quota.
3965 - Push out a tls record's worth of data once you've got it, rather
3966 than waiting until you've read everything waiting to be read. This
3967 may improve performance by pipelining better. We'll see.
3968 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
3969 from failed circuits (if they haven't been connected yet) and attach
3971 - Expire old streams that haven't managed to connect. Some day we'll
3972 have them reattach to new circuits instead.
3975 - Fix several memory leaks that were causing servers to become bloated
3977 - Fix a few very rare assert triggers. A few more remain.
3978 - Setuid to User _before_ complaining about running as root.
3981 Changes in version 0.0.2pre19 - 2004-01-07
3983 - Fix deadlock condition in dns farm. We were telling a child to die by
3984 closing the parent's file descriptor to him. But newer children were
3985 inheriting the open file descriptor from the parent, and since they
3986 weren't closing it, the socket never closed, so the child never read
3987 eof, so he never knew to exit. Similarly, dns workers were holding
3988 open other sockets, leading to all sorts of chaos.
3989 - New cleaner daemon() code for forking and backgrounding.
3990 - If you log to a file, it now prints an entry at the top of the
3991 logfile so you know it's working.
3992 - The onionskin challenge length was 30 bytes longer than necessary.
3993 - Started to patch up the spec so it's not quite so out of date.
3996 Changes in version 0.0.2pre18 - 2004-01-02
3998 - Fix endian issues with the 'integrity' field in the relay header.
3999 - Fix a potential bug where connections in state
4000 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
4003 Changes in version 0.0.2pre17 - 2003-12-30
4005 - Made --debuglogfile (or any second log file, actually) work.
4006 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
4007 adversary could force us into an infinite loop.
4010 - Each onionskin handshake now includes a hash of the computed key,
4011 to prove the server's identity and help perfect forward secrecy.
4012 - Changed cell size from 256 to 512 bytes (working toward compatibility
4014 - Changed cell length to 2 bytes, and moved it to the relay header.
4015 - Implemented end-to-end integrity checking for the payloads of
4017 - Separated streamid from 'recognized' (otherwise circuits will get
4018 messed up when we try to have streams exit from the middle). We
4019 use the integrity-checking to confirm that a cell is addressed to
4021 - Randomize the initial circid and streamid values, so an adversary who
4022 breaks into a node can't learn how many circuits or streams have
4026 Changes in version 0.0.2pre16 - 2003-12-14
4028 - Fixed a bug that made HUP trigger an assert
4029 - Fixed a bug where a circuit that immediately failed wasn't being
4030 counted as a failed circuit in counting retries.
4033 - Now we close the circuit when we get a truncated cell: otherwise we're
4034 open to an anonymity attack where a bad node in the path truncates
4035 the circuit and then we open streams at him.
4036 - Add port ranges to exit policies
4037 - Add a conservative default exit policy
4038 - Warn if you're running tor as root
4039 - on HUP, retry OR connections and close/rebind listeners
4040 - options.EntryNodes: try these nodes first when picking the first node
4041 - options.ExitNodes: if your best choices happen to include any of
4042 your preferred exit nodes, you choose among just those preferred
4044 - options.ExcludedNodes: nodes that are never picked in path building
4047 Changes in version 0.0.2pre15 - 2003-12-03
4048 o Robustness and bugfixes:
4049 - Sometimes clients would cache incorrect DNS resolves, which would
4050 really screw things up.
4051 - An OP that goes offline would slowly leak all its sockets and stop
4053 - A wide variety of bugfixes in exit node selection, exit policy
4054 handling, and processing pending streams when a new circuit is
4056 - Pick nodes for a path only from those the directory says are up
4057 - Choose randomly from all running dirservers, not always the first one
4058 - Increase allowed http header size for directory fetch.
4059 - Stop writing to stderr (if we're daemonized it will be closed).
4060 - Enable -g always, so cores will be more useful to me.
4061 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
4064 - Wrote a man page. It lists commonly used options.
4067 - Change default loglevel to warn.
4068 - Make PidFile default to null rather than littering in your CWD.
4069 - OnionRouter config option is now obsolete. Instead it just checks
4071 - Moved to a single unified torrc file for both clients and servers.
4074 Changes in version 0.0.2pre14 - 2003-11-29
4075 o Robustness and bugfixes:
4076 - Force the admin to make the DataDirectory himself
4077 - to get ownership/permissions right
4078 - so clients no longer make a DataDirectory and then never use it
4079 - fix bug where a client who was offline for 45 minutes would never
4080 pull down a directory again
4081 - fix (or at least hide really well) the dns assert bug that was
4082 causing server crashes
4083 - warnings and improved robustness wrt clockskew for certs
4084 - use the native daemon(3) to daemonize, when available
4085 - exit if bind() fails
4086 - exit if neither socksport nor orport is defined
4087 - include our own tor_timegm (Win32 doesn't have its own)
4088 - bugfix for win32 with lots of connections
4089 - fix minor bias in PRNG
4090 - make dirserver more robust to corrupt cached directory
4093 - Wrote the design document (woo)
4095 o Circuit building and exit policies:
4096 - Circuits no longer try to use nodes that the directory has told them
4098 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
4099 bitcounts (18.0.0.0/8).
4100 - Make AP connections standby for a circuit if no suitable circuit
4101 exists, rather than failing
4102 - Circuits choose exit node based on addr/port, exit policies, and
4103 which AP connections are standing by
4104 - Bump min pathlen from 2 to 3
4105 - Relay end cells have a payload to describe why the stream ended.
4106 - If the stream failed because of exit policy, try again with a new
4108 - Clients have a dns cache to remember resolved addresses.
4109 - Notice more quickly when we have no working circuits
4112 - APPort is now called SocksPort
4113 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
4115 - RecommendedVersions is now a config variable rather than
4116 hardcoded (for dirservers)
4117 - Reloads config on HUP
4118 - Usage info on -h or --help
4119 - If you set User and Group config vars, it'll setu/gid to them.
4121 Changes in version 0.0.2pre13 - 2003-10-19
4122 o General stability:
4123 - SSL_write no longer fails when it returns WANTWRITE and the number
4124 of bytes in the buf has changed by the next SSL_write call.
4125 - Fix segfault fetching directory when network is down
4126 - Fix a variety of minor memory leaks
4127 - Dirservers reload the fingerprints file on HUP, so I don't have
4128 to take down the network when I approve a new router
4129 - Default server config file has explicit Address line to specify fqdn
4132 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
4133 - Make listener connections not ever alloc bufs
4135 o Autoconf improvements:
4136 - don't clobber an external CFLAGS in ./configure
4137 - Make install now works
4138 - create var/lib/tor on make install
4139 - autocreate a tor.sh initscript to help distribs
4140 - autocreate the torrc and sample-server-torrc with correct paths
4142 o Log files and Daemonizing now work:
4143 - If --DebugLogFile is specified, log to it at -l debug
4144 - If --LogFile is specified, use it instead of commandline
4145 - If --RunAsDaemon is set, tor forks and backgrounds on startup