1 Changes in version 0.1.2.1-alpha - 2006-06-xx (in progress)
3 - Add async dns code from Adam Langley, tweaked to build on OSX.
4 Only enabled when you pass the --enable-eventdns argument to
6 - Stop fetching descriptors if you're not a dir mirror and you
7 haven't tried to establish any circuits lately.
10 - New dirport behavior: if you have your dirport set, you are
11 now a directory mirror, whether or not your orport is set.
12 - Minor changes so Tor builds with mingw on windows.
13 - Claim a commonname of Tor, rather than TOR, in TLS handshakes.
14 Maybe this will help us win the war of names.
15 - Re-enable per-connection rate limiting. Get rid of the "OP
16 bandwidth" concept. Lay groundwork for "bandwidth classes" --
17 separate global buckets that apply depending on what sort of conn
19 - Add a man page entry for ProtocolWarnings.
20 - Add more asserts to track down an assert error on a windows Tor
21 server with connection_add being called with socket = -1.
22 - Add TestVia config option to the man page.
25 Changes in version 0.1.1.23 - 2006-07-30
27 - Fast Tor servers, especially exit nodes, were triggering asserts
28 due to a bug in handling the list of pending DNS resolves. Some
29 bugs still remain here; we're hunting them.
30 - Entry guards could crash clients by sending unexpected input.
31 - More fixes on reachability testing: if you find yourself reachable,
32 then don't ever make any client requests (so you stop predicting
33 circuits), then hup or have your clock jump, then later your IP
34 changes, you won't think circuits are working, so you won't try to
35 test reachability, so you won't publish.
38 - Avoid a crash if the controller does a resetconf firewallports
39 and then a setconf fascistfirewall=1.
40 - Avoid an integer underflow when the dir authority decides whether
41 a router is stable: we might wrongly label it stable, and compute
42 a slightly wrong median stability, when a descriptor is published
44 - Fix a place where we might trigger an assert if we can't build our
45 own server descriptor yet.
48 Changes in version 0.1.1.22 - 2006-07-05
50 - Fix a big bug that was causing servers to not find themselves
51 reachable if they changed IP addresses. Since only 0.1.1.22+
52 servers can do reachability testing correctly, now we automatically
53 make sure to test via one of these.
54 - Fix to allow clients and mirrors to learn directory info from
55 descriptor downloads that get cut off partway through.
56 - Directory authorities had a bug in deciding if a newly published
57 descriptor was novel enough to make everybody want a copy -- a few
58 servers seem to be publishing new descriptors many times a minute.
60 - Fix a rare bug that was causing some servers to complain about
61 "closing wedged cpuworkers" and skip some circuit create requests.
62 - Make the Exit flag in directory status documents actually work.
65 Changes in version 0.1.1.21 - 2006-06-10
66 o Crash and assert fixes from 0.1.1.20:
67 - Fix a rare crash on Tor servers that have enabled hibernation.
68 - Fix a seg fault on startup for Tor networks that use only one
70 - Fix an assert from a race condition that occurs on Tor servers
71 while exiting, where various threads are trying to log that they're
72 exiting, and delete the logs, at the same time.
73 - Make our unit tests pass again on certain obscure platforms.
76 - Add support for building SUSE RPM packages.
77 - Speed up initial bootstrapping for clients: if we are making our
78 first ever connection to any entry guard, then don't mark it down
80 - When only one Tor server in the network is labelled as a guard,
81 and we've already picked him, we would cycle endlessly picking him
82 again, being unhappy about it, etc. Now we specifically exclude
83 current guards when picking a new guard.
84 - Servers send create cells more reliably after the TLS connection
85 is established: we were sometimes forgetting to send half of them
86 when we had more than one pending.
87 - If we get a create cell that asks us to extend somewhere, but the
88 Tor server there doesn't match the expected digest, we now send
89 a destroy cell back, rather than silently doing nothing.
90 - Make options->RedirectExit work again.
91 - Make cookie authentication for the controller work again.
92 - Stop being picky about unusual characters in the arguments to
93 mapaddress. It's none of our business.
94 - Add a new config option "TestVia" that lets you specify preferred
95 middle hops to use for test circuits. Perhaps this will let me
96 debug the reachability problems better.
98 o Log / documentation fixes:
99 - If we're a server and some peer has a broken TLS certificate, don't
100 log about it unless ProtocolWarnings is set, i.e., we want to hear
101 about protocol violations by others.
102 - Fix spelling of VirtualAddrNetwork in man page.
103 - Add a better explanation at the top of the autogenerated torrc file
104 about what happened to our old torrc.
107 Changes in version 0.1.1.20 - 2006-05-23
108 o Crash and assert fixes from 0.1.0.17:
109 - Fix assert bug in close_logs() on exit: when we close and delete
110 logs, remove them all from the global "logfiles" list.
111 - Fix an assert error when we're out of space in the connection_list
112 and we try to post a hidden service descriptor (reported by Peter
114 - Fix a rare assert error when we've tried all intro points for
115 a hidden service and we try fetching the service descriptor again:
116 "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed".
117 - Setconf SocksListenAddress kills Tor if it fails to bind. Now back
118 out and refuse the setconf if it would fail.
119 - If you specify a relative torrc path and you set RunAsDaemon in
120 your torrc, then it chdir()'s to the new directory. If you then
121 HUP, it tries to load the new torrc location, fails, and exits.
122 The fix: no longer allow a relative path to torrc when using -f.
123 - Check for integer overflows in more places, when adding elements
124 to smartlists. This could possibly prevent a buffer overflow
125 on malicious huge inputs.
127 o Security fixes, major:
128 - When we're printing strings from the network, don't try to print
129 non-printable characters. Now we're safer against shell escape
130 sequence exploits, and also against attacks to fool users into
131 misreading their logs.
132 - Implement entry guards: automatically choose a handful of entry
133 nodes and stick with them for all circuits. Only pick new guards
134 when the ones you have are unsuitable, and if the old guards
135 become suitable again, switch back. This will increase security
136 dramatically against certain end-point attacks. The EntryNodes
137 config option now provides some hints about which entry guards you
138 want to use most; and StrictEntryNodes means to only use those.
140 - Implement exit enclaves: if we know an IP address for the
141 destination, and there's a running Tor server at that address
142 which allows exit to the destination, then extend the circuit to
143 that exit first. This provides end-to-end encryption and end-to-end
144 authentication. Also, if the user wants a .exit address or enclave,
145 use 4 hops rather than 3, and cannibalize a general circ for it
147 - Obey our firewall options more faithfully:
148 . If we can't get to a dirserver directly, try going via Tor.
149 . Don't ever try to connect (as a client) to a place our
150 firewall options forbid.
151 . If we specify a proxy and also firewall options, obey the
152 firewall options even when we're using the proxy: some proxies
153 can only proxy to certain destinations.
154 - Make clients regenerate their keys when their IP address changes.
155 - For the OS X package's modified privoxy config file, comment
156 out the "logfile" line so we don't log everything passed
158 - Our TLS handshakes were generating a single public/private
159 keypair for the TLS context, rather than making a new one for
160 each new connection. Oops. (But we were still rotating them
161 periodically, so it's not so bad.)
162 - When we were cannibalizing a circuit with a particular exit
163 node in mind, we weren't checking to see if that exit node was
164 already present earlier in the circuit. Now we are.
165 - Require server descriptors to list IPv4 addresses -- hostnames
166 are no longer allowed. This also fixes potential vulnerabilities
167 to servers providing hostnames as their address and then
168 preferentially resolving them so they can partition users.
169 - Our logic to decide if the OR we connected to was the right guy
170 was brittle and maybe open to a mitm for invalid routers.
172 o Security fixes, minor:
173 - Adjust tor-spec.txt to parameterize cell and key lengths. Now
174 Ian Goldberg can prove things about our handshake protocol more
176 - Make directory authorities generate a separate "guard" flag to
177 mean "would make a good entry guard". Clients now honor the
178 is_guard flag rather than looking at is_fast or is_stable.
179 - Try to list MyFamily elements by key, not by nickname, and warn
180 if we've not heard of a server.
181 - Start using RAND_bytes rather than RAND_pseudo_bytes from
182 OpenSSL. Also, reseed our entropy every hour, not just at
183 startup. And add entropy in 512-bit chunks, not 160-bit chunks.
184 - Refuse server descriptors where the fingerprint line doesn't match
185 the included identity key. Tor doesn't care, but other apps (and
186 humans) might actually be trusting the fingerprint line.
187 - We used to kill the circuit when we receive a relay command we
188 don't recognize. Now we just drop that cell.
189 - Fix a bug found by Lasse Overlier: when we were making internal
190 circuits (intended to be cannibalized later for rendezvous and
191 introduction circuits), we were picking them so that they had
192 useful exit nodes. There was no need for this, and it actually
193 aids some statistical attacks.
194 - Start treating internal circuits and exit circuits separately.
195 It's important to keep them separate because internal circuits
196 have their last hops picked like middle hops, rather than like
197 exit hops. So exiting on them will break the user's expectations.
198 - Fix a possible way to DoS dirservers.
199 - When the client asked for a rendezvous port that the hidden
200 service didn't want to provide, we were sending an IP address
201 back along with the end cell. Fortunately, it was zero. But stop
204 o Packaging improvements:
205 - Implement --with-libevent-dir option to ./configure. Improve
206 search techniques to find libevent, and use those for openssl too.
207 - Fix a couple of bugs in OpenSSL detection. Deal better when
208 there are multiple SSLs installed with different versions.
209 - Avoid warnings about machine/limits.h on Debian GNU/kFreeBSD.
210 - On non-gcc compilers (e.g. Solaris's cc), use "-g -O" instead of
212 - Make unit tests (and other invocations that aren't the real Tor)
213 run without launching listeners, creating subdirectories, and so on.
214 - The OS X installer was adding a symlink for tor_resolve but
215 the binary was called tor-resolve (reported by Thomas Hardly).
216 - Now we can target arch and OS in rpm builds (contributed by
217 Phobos). Also make the resulting dist-rpm filename match the
219 - Apply Matt Ghali's --with-syslog-facility patch to ./configure
220 if you log to syslog and want something other than LOG_DAEMON.
221 - Fix the torify (tsocks) config file to not use Tor for localhost
223 - Start shipping socks-extensions.txt, tor-doc-unix.html,
224 tor-doc-server.html, and stylesheet.css in the tarball.
225 - Stop shipping tor-doc.html, INSTALL, and README in the tarball.
226 They are useless now.
227 - Add Peter Palfrader's contributed check-tor script. It lets you
228 easily check whether a given server (referenced by nickname)
230 - Add BSD-style contributed startup script "rc.subr" from Peter
233 o Directory improvements -- new directory protocol:
234 - See tor/doc/dir-spec.txt for all the juicy details. Key points:
235 - Authorities and caches publish individual descriptors (by
236 digest, by fingerprint, by "all", and by "tell me yours").
237 - Clients don't download or use the old directory anymore. Now they
238 download network-statuses from the directory authorities, and
239 fetch individual server descriptors as needed from mirrors.
240 - Clients don't download descriptors of non-running servers.
241 - Download descriptors by digest, not by fingerprint. Caches try to
242 download all listed digests from authorities; clients try to
243 download "best" digests from caches. This avoids partitioning
244 and isolating attacks better.
245 - Only upload a new server descriptor when options change, 18
246 hours have passed, uptime is reset, or bandwidth changes a lot.
247 - Directory authorities silently throw away new descriptors that
248 haven't changed much if the timestamps are similar. We do this to
249 tolerate older Tor servers that upload a new descriptor every 15
250 minutes. (It seemed like a good idea at the time.)
251 - Clients choose directory servers from the network status lists,
252 not from their internal list of router descriptors. Now they can
253 go to caches directly rather than needing to go to authorities
254 to bootstrap the first set of descriptors.
255 - When picking a random directory, prefer non-authorities if any
257 - Add a new flag to network-status indicating whether the server
258 can answer v2 directory requests too.
259 - Directory mirrors now cache up to 16 unrecognized network-status
260 docs, so new directory authorities will be cached too.
261 - Stop parsing, storing, or using running-routers output (but
262 mirrors still cache and serve it).
263 - Clients consider a threshold of "versioning" directory authorities
264 before deciding whether to warn the user that he's obsolete.
265 - Authorities publish separate sorted lists of recommended versions
266 for clients and for servers.
267 - Change DirServers config line to note which dirs are v1 authorities.
268 - Put nicknames on the DirServer line, so we can refer to them
269 without requiring all our users to memorize their IP addresses.
270 - Remove option when getting directory cache to see whether they
271 support running-routers; they all do now. Replace it with one
272 to see whether caches support v2 stuff.
273 - Stop listing down or invalid nodes in the v1 directory. This
274 reduces its bulk by about 1/3, and reduces load on mirrors.
275 - Mirrors no longer cache the v1 directory as often.
276 - If we as a directory mirror don't know of any v1 directory
277 authorities, then don't try to cache any v1 directories.
279 o Other directory improvements:
280 - Add lefkada.eecs.harvard.edu and tor.dizum.com as fourth and
281 fifth authoritative directory servers.
282 - Directory authorities no longer require an open connection from
283 a server to consider him "reachable". We need this change because
284 when we add new directory authorities, old servers won't know not
286 - Dir authorities now do their own external reachability testing
287 of each server, and only list as running the ones they found to
288 be reachable. We also send back warnings to the server's logs if
289 it uploads a descriptor that we already believe is unreachable.
290 - Spread the directory authorities' reachability testing over the
291 entire testing interval, so we don't try to do 500 TLS's at once
293 - Make the "stable" router flag in network-status be the median of
294 the uptimes of running valid servers, and make clients pay
295 attention to the network-status flags. Thus the cutoff adapts
296 to the stability of the network as a whole, making IRC, IM, etc
297 connections more reliable.
298 - Make the v2 dir's "Fast" flag based on relative capacity, just
299 like "Stable" is based on median uptime. Name everything in the
300 top 7/8 Fast, and only the top 1/2 gets to be a Guard.
301 - Retry directory requests if we fail to get an answer we like
302 from a given dirserver (we were retrying before, but only if
304 - Return a robots.txt on our dirport to discourage google indexing.
306 o Controller protocol improvements:
307 - Revised controller protocol (version 1) that uses ascii rather
308 than binary: tor/doc/control-spec.txt. Add supporting libraries
309 in python and java and c# so you can use the controller from your
310 applications without caring how our protocol works.
311 - Allow the DEBUG controller event to work again. Mark certain log
312 entries as "don't tell this to controllers", so we avoid cycles.
313 - New controller function "getinfo accounting", to ask how
314 many bytes we've used in this time period.
315 - Add a "resetconf" command so you can set config options like
316 AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
317 a config option in the torrc with no value, then it clears it
318 entirely (rather than setting it to its default).
319 - Add a "getinfo config-file" to tell us where torrc is. Also
320 expose guard nodes, config options/names.
321 - Add a "quit" command (when when using the controller manually).
322 - Add a new signal "newnym" to "change pseudonyms" -- that is, to
323 stop using any currently-dirty circuits for new streams, so we
324 don't link new actions to old actions. This also occurs on HUP
326 - If we would close a stream early (e.g. it asks for a .exit that
327 we know would refuse it) but the LeaveStreamsUnattached config
328 option is set by the controller, then don't close it.
329 - Add a new controller event type "authdir_newdescs" that allows
330 controllers to get all server descriptors that were uploaded to
331 a router in its role as directory authority.
332 - New controller option "getinfo desc/all-recent" to fetch the
333 latest server descriptor for every router that Tor knows about.
334 - Fix the controller's "attachstream 0" command to treat conn like
335 it just connected, doing address remapping, handling .exit and
336 .onion idioms, and so on. Now we're more uniform in making sure
337 that the controller hears about new and closing connections.
338 - Permit transitioning from ORPort==0 to ORPort!=0, and back, from
339 the controller. Also, rotate dns and cpu workers if the controller
340 changes options that will affect them; and initialize the dns
341 worker cache tree whether or not we start out as a server.
342 - Add a new circuit purpose 'controller' to let the controller ask
343 for a circuit that Tor won't try to use. Extend the "extendcircuit"
344 controller command to let you specify the purpose if you're starting
345 a new circuit. Add a new "setcircuitpurpose" controller command to
346 let you change a circuit's purpose after it's been created.
347 - Let the controller ask for "getinfo dir/server/foo" so it can ask
348 directly rather than connecting to the dir port. "getinfo
349 dir/status/foo" also works, but currently only if your DirPort
351 - Let the controller tell us about certain router descriptors
352 that it doesn't want Tor to use in circuits. Implement
353 "setrouterpurpose" and modify "+postdescriptor" to do this.
354 - If the controller's *setconf commands fail, collect an error
355 message in a string and hand it back to the controller -- don't
356 just tell them to go read their logs.
358 o Scalability, resource management, and performance:
359 - Fix a major load balance bug: we were round-robin reading in 16 KB
360 chunks, and servers with bandwidthrate of 20 KB, while downloading
361 a 600 KB directory, would starve their other connections. Now we
362 try to be a bit more fair.
363 - Be more conservative about whether to advertise our DirPort.
364 The main change is to not advertise if we're running at capacity
365 and either a) we could hibernate ever or b) our capacity is low
366 and we're using a default DirPort.
367 - We weren't cannibalizing circuits correctly for
368 CIRCUIT_PURPOSE_C_ESTABLISH_REND and
369 CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
370 build those from scratch. This should make hidden services faster.
371 - Predict required circuits better, with an eye toward making hidden
372 services faster on the service end.
373 - Compress exit policies even more: look for duplicate lines and
375 - Generate 18.0.0.0/8 address policy format in descs when we can;
376 warn when the mask is not reducible to a bit-prefix.
377 - There used to be two ways to specify your listening ports in a
378 server descriptor: on the "router" line and with a separate "ports"
379 line. Remove support for the "ports" line.
380 - Reduce memory requirements in our structs by changing the order
381 of fields. Replace balanced trees with hash tables. Inline
382 bottleneck smartlist functions. Add a "Map from digest to void*"
383 abstraction so we can do less hex encoding/decoding, and use it
384 in router_get_by_digest(). Many other CPU and memory improvements.
385 - Allow tor_gzip_uncompress to extract as much as possible from
386 truncated compressed data. Try to extract as many
387 descriptors as possible from truncated http responses (when
388 purpose is DIR_PURPOSE_FETCH_ROUTERDESC).
389 - Make circ->onionskin a pointer, not a static array. moria2 was using
390 125000 circuit_t's after it had been up for a few weeks, which
391 translates to 20+ megs of wasted space.
392 - The private half of our EDH handshake keys are now chosen out
393 of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
394 - Stop doing the complex voodoo overkill checking for insecure
395 Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
396 - Do round-robin writes for TLS of at most 16 kB per write. This
397 might be more fair on loaded Tor servers.
398 - Do not use unaligned memory access on alpha, mips, or mipsel.
399 It *works*, but is very slow, so we treat them as if it doesn't.
401 o Other bugfixes and improvements:
402 - Start storing useful information to $DATADIR/state, so we can
403 remember things across invocations of Tor. Retain unrecognized
404 lines so we can be forward-compatible, and write a TorVersion line
405 so we can be backward-compatible.
406 - If ORPort is set, Address is not explicitly set, and our hostname
407 resolves to a private IP address, try to use an interface address
408 if it has a public address. Now Windows machines that think of
409 themselves as localhost can guess their address.
410 - Regenerate our local descriptor if it's dirty and we try to use
411 it locally (e.g. if it changes during reachability detection).
412 This was causing some Tor servers to keep publishing the same
413 initial descriptor forever.
414 - Tor servers with dynamic IP addresses were needing to wait 18
415 hours before they could start doing reachability testing using
416 the new IP address and ports. This is because they were using
417 the internal descriptor to learn what to test, yet they were only
418 rebuilding the descriptor once they decided they were reachable.
419 - It turns out we couldn't bootstrap a network since we added
420 reachability detection in 0.1.0.1-rc. Good thing the Tor network
421 has never gone down. Add an AssumeReachable config option to let
422 servers and authorities bootstrap. When we're trying to build a
423 high-uptime or high-bandwidth circuit but there aren't enough
424 suitable servers, try being less picky rather than simply failing.
425 - Newly bootstrapped Tor networks couldn't establish hidden service
426 circuits until they had nodes with high uptime. Be more tolerant.
427 - Really busy servers were keeping enough circuits open on stable
428 connections that they were wrapping around the circuit_id
429 space. (It's only two bytes.) This exposed a bug where we would
430 feel free to reuse a circuit_id even if it still exists but has
431 been marked for close. Try to fix this bug. Some bug remains.
432 - When we fail to bind or listen on an incoming or outgoing
433 socket, we now close it before refusing, rather than just
434 leaking it. (Thanks to Peter Palfrader for finding.)
435 - Fix a file descriptor leak in start_daemon().
436 - On Windows, you can't always reopen a port right after you've
437 closed it. So change retry_listeners() to only close and re-open
438 ports that have changed.
439 - Workaround a problem with some http proxies that refuse GET
440 requests that specify "Content-Length: 0". Reported by Adrian.
441 - Recover better from TCP connections to Tor servers that are
442 broken but don't tell you (it happens!); and rotate TLS
443 connections once a week.
444 - Fix a scary-looking but apparently harmless bug where circuits
445 would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
446 servers, and never switch to state CIRCUIT_STATE_OPEN.
447 - Check for even more Windows version flags when writing the platform
448 string in server descriptors, and note any we don't recognize.
449 - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
450 get a better idea of why their circuits failed. Not used yet.
451 - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
452 We don't use them yet, but maybe one day our DNS resolver will be
453 able to discover them.
454 - Let people type "tor --install" as well as "tor -install" when they
455 want to make it an NT service.
456 - Looks like we were never delivering deflated (i.e. compressed)
457 running-routers lists, even when asked. Oops.
458 - We were leaking some memory every time the client changed IPs.
459 - Clean up more of the OpenSSL memory when exiting, so we can detect
461 - Never call free() on tor_malloc()d memory. This will help us
462 use dmalloc to detect memory leaks.
463 - Some Tor servers process billions of cells per day. These
464 statistics are now uint64_t's.
465 - Check [X-]Forwarded-For headers in HTTP requests when generating
466 log messages. This lets people run dirservers (and caches) behind
467 Apache but still know which IP addresses are causing warnings.
468 - Fix minor integer overflow in calculating when we expect to use up
469 our bandwidth allocation before hibernating.
470 - Lower the minimum required number of file descriptors to 1000,
471 so we can have some overhead for Valgrind on Linux, where the
472 default ulimit -n is 1024.
473 - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
474 and its existence is confusing some users.
476 o Config option fixes:
477 - Add a new config option ExitPolicyRejectPrivate which defaults
478 to on. Now all exit policies will begin with rejecting private
479 addresses, unless the server operator explicitly turns it off.
480 - Bump the default bandwidthrate to 3 MB, and burst to 6 MB.
481 - Add new ReachableORAddresses and ReachableDirAddresses options
482 that understand address policies. FascistFirewall is now a synonym
483 for "ReachableORAddresses *:443", "ReachableDirAddresses *:80".
484 - Start calling it FooListenAddress rather than FooBindAddress,
485 since few of our users know what it means to bind an address
487 - If the user gave Tor an odd number of command-line arguments,
488 we were silently ignoring the last one. Now we complain and fail.
489 This wins the oldest-bug prize -- this bug has been present since
490 November 2002, as released in Tor 0.0.0.
491 - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
492 torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
493 it would silently ignore the 6668.
494 - If we get a linelist or linelist_s config option from the torrc,
495 e.g. ExitPolicy, and it has no value, warn and skip rather than
496 silently resetting it to its default.
497 - Setconf was appending items to linelists, not clearing them.
498 - Add MyFamily to torrc.sample in the server section, so operators
499 will be more likely to learn that it exists.
500 - Make ContactInfo mandatory for authoritative directory servers.
501 - MaxConn has been obsolete for a while now. Document the ConnLimit
502 config option, which is a *minimum* number of file descriptors
503 that must be available else Tor refuses to start.
504 - Get rid of IgnoreVersion undocumented config option, and make us
505 only warn, never exit, when we're running an obsolete version.
506 - Make MonthlyAccountingStart config option truly obsolete now.
507 - Correct the man page entry on TrackHostExitsExpire.
508 - Let directory authorities start even if they don't specify an
509 Address config option.
510 - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
511 reflect the updated flags in our v2 dir protocol.
513 o Config option features:
514 - Add a new config option FastFirstHopPK (on by default) so clients
515 do a trivial crypto handshake for their first hop, since TLS has
516 already taken care of confidentiality and authentication.
517 - Let the user set ControlListenAddress in the torrc. This can be
518 dangerous, but there are some cases (like a secured LAN) where it
520 - New config options to help controllers: FetchServerDescriptors
521 and FetchHidServDescriptors for whether to fetch server
522 info and hidserv info or let the controller do it, and
523 PublishServerDescriptor and PublishHidServDescriptors.
524 - Also let the controller set the __AllDirActionsPrivate config
525 option if you want all directory fetches/publishes to happen via
526 Tor (it assumes your controller bootstraps your circuits).
527 - Add "HardwareAccel" config option: support for crypto hardware
528 accelerators via OpenSSL. Off by default, until we find somebody
529 smart who can test it for us. (It appears to produce seg faults
530 in at least some cases.)
531 - New config option "AuthDirRejectUnlisted" for directory authorities
532 as a panic button: if we get flooded with unusable servers we can
533 revert to only listing servers in the approved-routers file.
534 - Directory authorities can now reject/invalidate by key and IP,
535 with the config options "AuthDirInvalid" and "AuthDirReject", or
536 by marking a fingerprint as "!reject" or "!invalid" (as its
537 nickname) in the approved-routers file. This is useful since
538 currently we automatically list servers as running and usable
539 even if we know they're jerks.
540 - Add a new config option TestSocks so people can see whether their
541 applications are using socks4, socks4a, socks5-with-ip, or
542 socks5-with-fqdn. This way they don't have to keep mucking
543 with tcpdump and wondering if something got cached somewhere.
544 - Add "private:*" as an alias in configuration for policies. Now
545 you can simplify your exit policy rather than needing to list
546 every single internal or nonroutable network space.
547 - Accept "private:*" in routerdesc exit policies; not generated yet
548 because older Tors do not understand it.
549 - Add configuration option "V1AuthoritativeDirectory 1" which
550 moria1, moria2, and tor26 have set.
551 - Implement an option, VirtualAddrMask, to set which addresses
552 get handed out in response to mapaddress requests. This works
553 around a bug in tsocks where 127.0.0.0/8 is never socksified.
554 - Add a new config option FetchUselessDescriptors, off by default,
555 for when you plan to run "exitlist" on your client and you want
556 to know about even the non-running descriptors.
557 - SocksTimeout: How long do we let a socks connection wait
558 unattached before we fail it?
559 - CircuitBuildTimeout: Cull non-open circuits that were born
560 at least this many seconds ago.
561 - CircuitIdleTimeout: Cull open clean circuits that were born
562 at least this many seconds ago.
563 - New config option SafeSocks to reject all application connections
564 using unsafe socks protocols. Defaults to off.
566 o Improved and clearer log messages:
567 - Reduce clutter in server logs. We're going to try to make
568 them actually usable now. New config option ProtocolWarnings that
569 lets you hear about how _other Tors_ are breaking the protocol. Off
571 - Divide log messages into logging domains. Once we put some sort
572 of interface on this, it will let people looking at more verbose
573 log levels specify the topics they want to hear more about.
574 - Log server fingerprint on startup, so new server operators don't
575 have to go hunting around their filesystem for it.
576 - Provide dire warnings to any users who set DirServer manually;
577 move it out of torrc.sample and into torrc.complete.
578 - Make the log message less scary when all the dirservers are
579 temporarily unreachable.
580 - When tor_socketpair() fails in Windows, give a reasonable
581 Windows-style errno back.
582 - Improve tor_gettimeofday() granularity on windows.
583 - We were printing the number of idle dns workers incorrectly when
585 - Handle duplicate lines in approved-routers files without warning.
586 - We were whining about using socks4 or socks5-with-local-lookup
587 even when it's an IP address in the "virtual" range we designed
588 exactly for this case.
589 - Check for named servers when looking them up by nickname;
590 warn when we're calling a non-named server by its nickname;
591 don't warn twice about the same name.
592 - Downgrade the dirserver log messages when whining about
594 - Correct "your server is reachable" log entries to indicate that
595 it was self-testing that told us so.
596 - If we're trying to be a Tor server and running Windows 95/98/ME
597 as a server, explain that we'll likely crash.
598 - Provide a more useful warn message when our onion queue gets full:
599 the CPU is too slow or the exit policy is too liberal.
600 - Don't warn when we receive a 503 from a dirserver/cache -- this
601 will pave the way for them being able to refuse if they're busy.
602 - When we fail to bind a listener, try to provide a more useful
603 log message: e.g., "Is Tor already running?"
604 - Only start testing reachability once we've established a
605 circuit. This will make startup on dir authorities less noisy.
606 - Don't try to upload hidden service descriptors until we have
607 established a circuit.
608 - Tor didn't warn when it failed to open a log file.
609 - Warn when listening on a public address for socks. We suspect a
610 lot of people are setting themselves up as open socks proxies,
611 and they have no idea that jerks on the Internet are using them,
612 since they simply proxy the traffic into the Tor network.
613 - Give a useful message when people run Tor as the wrong user,
614 rather than telling them to start chowning random directories.
615 - Fix a harmless bug that was causing Tor servers to log
616 "Got an end because of misc error, but we're not an AP. Closing."
617 - Fix wrong log message when you add a "HiddenServiceNodes" config
618 line without any HiddenServiceDir line (reported by Chris Thomas).
619 - Directory authorities now stop whining so loudly about bad
620 descriptors that they fetch from other dirservers. So when there's
621 a log complaint, it's for sure from a freshly uploaded descriptor.
622 - When logging via syslog, include the pid whenever we provide
623 a log entry. Suggested by Todd Fries.
624 - When we're shutting down and we do something like try to post a
625 server descriptor or rendezvous descriptor, don't complain that
626 we seem to be unreachable. Of course we are, we're shutting down.
627 - Change log line for unreachability to explicitly suggest /etc/hosts
628 as the culprit. Also make it clearer what IP address and ports we're
629 testing for reachability.
630 - Put quotes around user-supplied strings when logging so users are
631 more likely to realize if they add bad characters (like quotes)
633 - NT service patch from Matt Edman to improve error messages on Win32.
636 Changes in version 0.1.0.17 - 2006-02-17
637 o Crash bugfixes on 0.1.0.x:
638 - When servers with a non-zero DirPort came out of hibernation,
639 sometimes they would trigger an assert.
641 o Other important bugfixes:
642 - On platforms that don't have getrlimit (like Windows), we were
643 artificially constraining ourselves to a max of 1024
644 connections. Now just assume that we can handle as many as 15000
645 connections. Hopefully this won't cause other problems.
647 o Backported features:
648 - When we're a server, a client asks for an old-style directory,
649 and our write bucket is empty, don't give it to him. This way
650 small servers can continue to serve the directory *sometimes*,
651 without getting overloaded.
652 - Whenever you get a 503 in response to a directory fetch, try
653 once more. This will become important once servers start sending
654 503's whenever they feel busy.
655 - Fetch a new directory every 120 minutes, not every 40 minutes.
656 Now that we have hundreds of thousands of users running the old
657 directory algorithm, it's starting to hurt a lot.
658 - Bump up the period for forcing a hidden service descriptor upload
659 from 20 minutes to 1 hour.
662 Changes in version 0.1.0.16 - 2006-01-02
663 o Crash bugfixes on 0.1.0.x:
664 - On Windows, build with a libevent patch from "I-M Weasel" to avoid
665 corrupting the heap, losing FDs, or crashing when we need to resize
666 the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
667 - It turns out sparc64 platforms crash on unaligned memory access
668 too -- so detect and avoid this.
669 - Handle truncated compressed data correctly (by detecting it and
671 - Fix possible-but-unlikely free(NULL) in control.c.
672 - When we were closing connections, there was a rare case that
673 stomped on memory, triggering seg faults and asserts.
674 - Avoid potential infinite recursion when building a descriptor. (We
675 don't know that it ever happened, but better to fix it anyway.)
676 - We were neglecting to unlink marked circuits from soon-to-close OR
677 connections, which caused some rare scribbling on freed memory.
678 - Fix a memory stomping race bug when closing the joining point of two
680 - Fix an assert in time parsing found by Steven Murdoch.
682 o Other bugfixes on 0.1.0.x:
683 - When we're doing reachability testing, provide more useful log
684 messages so the operator knows what to expect.
685 - Do not check whether DirPort is reachable when we are suppressing
686 advertising it because of hibernation.
687 - When building with -static or on Solaris, we sometimes needed -ldl.
688 - One of the dirservers (tor26) changed its IP address.
689 - When we're deciding whether a stream has enough circuits around
690 that can handle it, count the freshly dirty ones and not the ones
691 that are so dirty they won't be able to handle it.
692 - When we're expiring old circuits, we had a logic error that caused
693 us to close new rendezvous circuits rather than old ones.
694 - Give a more helpful log message when you try to change ORPort via
695 the controller: you should upgrade Tor if you want that to work.
696 - We were failing to parse Tor versions that start with "Tor ".
697 - Tolerate faulty streams better: when a stream fails for reason
698 exitpolicy, stop assuming that the router is lying about his exit
699 policy. When a stream fails for reason misc, allow it to retry just
700 as if it was resolvefailed. When a stream has failed three times,
701 reset its failure count so we can try again and get all three tries.
704 Changes in version 0.1.0.15 - 2005-09-23
705 o Bugfixes on 0.1.0.x:
706 - Reject ports 465 and 587 (spam targets) in default exit policy.
707 - Don't crash when we don't have any spare file descriptors and we
708 try to spawn a dns or cpu worker.
709 - Get rid of IgnoreVersion undocumented config option, and make us
710 only warn, never exit, when we're running an obsolete version.
711 - Don't try to print a null string when your server finds itself to
712 be unreachable and the Address config option is empty.
713 - Make the numbers in read-history and write-history into uint64s,
714 so they don't overflow and publish negatives in the descriptor.
715 - Fix a minor memory leak in smartlist_string_remove().
716 - We were only allowing ourselves to upload a server descriptor at
717 most every 20 minutes, even if it changed earlier than that.
718 - Clean up log entries that pointed to old URLs.
721 Changes in version 0.1.0.14 - 2005-08-08
722 o Bugfixes on 0.1.0.x:
723 - Fix the other half of the bug with crypto handshakes
725 - Fix an assert trigger if you send a 'signal term' via the
726 controller when it's listening for 'event info' messages.
729 Changes in version 0.1.0.13 - 2005-08-04
730 o Bugfixes on 0.1.0.x:
731 - Fix a critical bug in the security of our crypto handshakes.
732 - Fix a size_t underflow in smartlist_join_strings2() that made
733 it do bad things when you hand it an empty smartlist.
734 - Fix Windows installer to ship Tor license (thanks to Aphex for
735 pointing out this oversight) and put a link to the doc directory
737 - Explicitly set no-unaligned-access for sparc: it turns out the
738 new gcc's let you compile broken code, but that doesn't make it
742 Changes in version 0.1.0.12 - 2005-07-18
743 o New directory servers:
744 - tor26 has changed IP address.
746 o Bugfixes on 0.1.0.x:
747 - Fix a possible double-free in tor_gzip_uncompress().
748 - When --disable-threads is set, do not search for or link against
750 - Don't trigger an assert if an authoritative directory server
751 claims its dirport is 0.
752 - Fix bug with removing Tor as an NT service: some people were
753 getting "The service did not return an error." Thanks to Matt
757 Changes in version 0.1.0.11 - 2005-06-30
758 o Bugfixes on 0.1.0.x:
759 - Fix major security bug: servers were disregarding their
760 exit policies if clients behaved unexpectedly.
761 - Make OS X init script check for missing argument, so we don't
762 confuse users who invoke it incorrectly.
763 - Fix a seg fault in "tor --hash-password foo".
764 - The MAPADDRESS control command was broken.
767 Changes in version 0.1.0.10 - 2005-06-14
769 - Make NT services work and start on startup on Win32 (based on
770 patch by Matt Edman). See the FAQ entry for details.
771 - Make 'platform' string in descriptor more accurate for Win32
772 servers, so it's not just "unknown platform".
773 - REUSEADDR on normal platforms means you can rebind to the port
774 right after somebody else has let it go. But REUSEADDR on Win32
775 means you can bind to the port _even when somebody else already
776 has it bound_! So, don't do that on Win32.
777 - Clean up the log messages when starting on Win32 with no config
779 - Allow seeding the RNG on Win32 even when you're not running as
780 Administrator. If seeding the RNG on Win32 fails, quit.
782 o Assert / crash bugs:
783 - Refuse relay cells that claim to have a length larger than the
784 maximum allowed. This prevents a potential attack that could read
785 arbitrary memory (e.g. keys) from an exit server's process
787 - If unofficial Tor clients connect and send weird TLS certs, our
788 Tor server triggers an assert. Stop asserting, and start handling
789 TLS errors better in other situations too.
790 - Fix a race condition that can trigger an assert when we have a
791 pending create cell and an OR connection attempt fails.
794 - Use pthreads for worker processes rather than forking. This was
795 forced because when we forked, we ended up wasting a lot of
796 duplicate ram over time.
797 - Also switch to foo_r versions of some library calls to allow
798 reentry and threadsafeness.
799 - Implement --disable-threads configure option. Disable threads on
800 netbsd and openbsd by default, because they have no reentrant
801 resolver functions (!), and on solaris since it has other
803 - Fix possible bug on threading platforms (e.g. win32) which was
804 leaking a file descriptor whenever a cpuworker or dnsworker died.
805 - Fix a minor memory leak when somebody establishes an introduction
806 point at your Tor server.
807 - Fix possible memory leak in tor_lookup_hostname(). (Thanks to
809 - Add ./configure --with-dmalloc option, to track memory leaks.
810 - And try to free all memory on closing, so we can detect what
813 o Protocol correctness:
814 - When we've connected to an OR and handshaked but didn't like
815 the result, we were closing the conn without sending destroy
816 cells back for pending circuits. Now send those destroys.
817 - Start sending 'truncated' cells back rather than destroy cells
818 if the circuit closes in front of you. This means we won't have
819 to abandon partially built circuits.
820 - Handle changed router status correctly when dirserver reloads
821 fingerprint file. We used to be dropping all unverified descriptors
822 right then. The bug was hidden because we would immediately
823 fetch a directory from another dirserver, which would include the
824 descriptors we just dropped.
825 - Revise tor-spec to add more/better stream end reasons.
826 - Revise all calls to connection_edge_end to avoid sending 'misc',
827 and to take errno into account where possible.
828 - Client now retries when streams end early for 'hibernating' or
829 'resource limit' reasons, rather than failing them.
830 - Try to be more zealous about calling connection_edge_end when
831 things go bad with edge conns in connection.c.
833 o Robustness improvements:
834 - Better handling for heterogeneous / unreliable nodes:
835 - Annotate circuits with whether they aim to contain high uptime
836 nodes and/or high capacity nodes. When building circuits, choose
838 - This means that every single node in an intro rend circuit,
839 not just the last one, will have a minimum uptime.
840 - New config option LongLivedPorts to indicate application streams
841 that will want high uptime circuits.
842 - Servers reset uptime when a dir fetch entirely fails. This
843 hopefully reflects stability of the server's network connectivity.
844 - If somebody starts his tor server in Jan 2004 and then fixes his
845 clock, don't make his published uptime be a year.
846 - Reset published uptime when we wake up from hibernation.
847 - Introduce a notion of 'internal' circs, which are chosen without
848 regard to the exit policy of the last hop. Intro and rendezvous
849 circs must be internal circs, to avoid leaking information. Resolve
850 and connect streams can use internal circs if they want.
851 - New circuit pooling algorithm: keep track of what destination ports
852 we've used recently (start out assuming we'll want to use 80), and
853 make sure to have enough circs around to satisfy these ports. Also
854 make sure to have 2 internal circs around if we've required internal
855 circs lately (and with high uptime if we've seen that lately too).
856 - Turn addr_policy_compare from a tristate to a quadstate; this should
857 help address our "Ah, you allow 1.2.3.4:80. You are a good choice
858 for google.com" problem.
859 - When a client asks us for a dir mirror and we don't have one,
860 launch an attempt to get a fresh one.
861 - First cut at support for "create-fast" cells. Clients can use
862 these when extending to their first hop, since the TLS already
863 provides forward secrecy and authentication. Not enabled on
866 o Reachability testing.
867 - Your Tor server will automatically try to see if its ORPort and
868 DirPort are reachable from the outside, and it won't upload its
869 descriptor until it decides at least ORPort is reachable (when
870 DirPort is not yet found reachable, publish it as zero).
871 - When building testing circs for ORPort testing, use only
872 high-bandwidth nodes, so fewer circuits fail.
873 - Notice when our IP changes, and reset stats/uptime/reachability.
874 - Authdirservers don't do ORPort reachability detection, since
875 they're in clique mode, so it will be rare to find a server not
876 already connected to them.
877 - Authdirservers now automatically approve nodes running 0.1.0.2-rc
881 - Now we allow two unverified servers with the same nickname
882 but different keys. But if a nickname is verified, only that
883 nickname+key are allowed.
884 - If you're an authdirserver connecting to an address:port,
885 and it's not the OR you were expecting, forget about that
886 descriptor. If he *was* the one you were expecting, then forget
887 about all other descriptors for that address:port.
888 - Allow servers to publish descriptors from 12 hours in the future.
889 Corollary: only whine about clock skew from the dirserver if
890 he's a trusted dirserver (since now even verified servers could
891 have quite wrong clocks).
892 - Require servers that use the default dirservers to have public IP
893 addresses. We have too many servers that are configured with private
894 IPs and their admins never notice the log entries complaining that
895 their descriptors are being rejected.
897 o Efficiency improvements:
898 - Use libevent. Now we can use faster async cores (like epoll, kpoll,
899 and /dev/poll), and hopefully work better on Windows too.
900 - Apple's OS X 10.4.0 ships with a broken kqueue API, and using
901 kqueue on 10.3.9 causes kernel panics. Don't use kqueue on OS X.
902 - Find libevent even if it's hiding in /usr/local/ and your
903 CFLAGS and LDFLAGS don't tell you to look there.
904 - Be able to link with libevent as a shared library (the default
905 after 1.0d), even if it's hiding in /usr/local/lib and even
906 if you haven't added /usr/local/lib to your /etc/ld.so.conf,
907 assuming you're running gcc. Otherwise fail and give a useful
909 - Switch to a new buffer management algorithm, which tries to avoid
910 reallocing and copying quite as much. In first tests it looks like
911 it uses *more* memory on average, but less cpu.
912 - Switch our internal buffers implementation to use a ring buffer,
913 to hopefully improve performance for fast servers a lot.
914 - Reenable the part of the code that tries to flush as soon as an
915 OR outbuf has a full TLS record available. Perhaps this will make
916 OR outbufs not grow as huge except in rare cases, thus saving lots
917 of CPU time plus memory.
918 - Improve performance for dirservers: stop re-parsing the whole
919 directory every time you regenerate it.
920 - Keep a big splay tree of (circid,orconn)->circuit mappings to make
921 it much faster to look up a circuit for each relay cell.
922 - Remove most calls to assert_all_pending_dns_resolves_ok(),
923 since they're eating our cpu on exit nodes.
924 - Stop wasting time doing a case insensitive comparison for every
925 dns name every time we do any lookup. Canonicalize the names to
926 lowercase when you first see them.
929 - Handle unavailable hidden services better. Handle slow or busy
930 hidden services better.
931 - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
932 circ as necessary, if there are any completed ones lying around
933 when we try to launch one.
934 - Make hidden services try to establish a rendezvous for 30 seconds
935 after fetching the descriptor, rather than for n (where n=3)
936 attempts to build a circuit.
937 - Adjust maximum skew and age for rendezvous descriptors: let skew
938 be 48 hours rather than 90 minutes.
939 - Reject malformed .onion addresses rather then passing them on as
943 - More Tor controller support. See
944 http://tor.eff.org/doc/control-spec.txt for all the new features,
945 including signals to emulate unix signals from any platform;
946 redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
947 closestream; closecircuit; etc.
948 - Encode hashed controller passwords in hex instead of base64,
949 to make it easier to write controllers.
950 - Revise control spec and implementation to allow all log messages to
951 be sent to controller with their severities intact (suggested by
952 Matt Edman). Disable debug-level logs while delivering a debug-level
953 log to the controller, to prevent loop. Update TorControl to handle
956 o New config options/defaults:
957 - Begin scrubbing sensitive strings from logs by default. Turn off
958 the config option SafeLogging if you need to do debugging.
959 - New exit policy: accept most low-numbered ports, rather than
960 rejecting most low-numbered ports.
961 - Put a note in the torrc about abuse potential with the default
963 - Add support for CONNECTing through https proxies, with "HttpsProxy"
965 - Add HttpProxyAuthenticator and HttpsProxyAuthenticator support
966 based on patch from Adam Langley (basic auth only).
967 - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
968 the fast servers that have been joining lately. (Clients are now
969 willing to load balance over up to 2 MB of advertised bandwidth
971 - New config option MaxAdvertisedBandwidth which lets you advertise
972 a low bandwidthrate (to not attract as many circuits) while still
973 allowing a higher bandwidthrate in reality.
974 - Require BandwidthRate to be at least 20kB/s for servers.
975 - Add a NoPublish config option, so you can be a server (e.g. for
976 testing running Tor servers in other Tor networks) without
977 publishing your descriptor to the primary dirservers.
978 - Add a new AddressMap config directive to rewrite incoming socks
979 addresses. This lets you, for example, declare an implicit
980 required exit node for certain sites.
981 - Add a new TrackHostExits config directive to trigger addressmaps
982 for certain incoming socks addresses -- for sites that break when
983 your exit keeps changing (based on patch from Mike Perry).
984 - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
985 which describes how often we retry making new circuits if current
986 ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
987 how long we're willing to make use of an already-dirty circuit.
988 - Change compiled-in SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to
989 a config option "ShutdownWaitLength" (when using kill -INT on
991 - Fix an edge case in parsing config options: if they say "--"
992 on the commandline, it's not a config option (thanks weasel).
993 - New config option DirAllowPrivateAddresses for authdirservers.
994 Now by default they refuse router descriptors that have non-IP or
995 private-IP addresses.
996 - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
997 smart" default value: low for servers and high for clients.
998 - Some people were putting "Address " in their torrc, and they had
999 a buggy resolver that resolved " " to 0.0.0.0. Oops.
1000 - If DataDir is ~/.tor, and that expands to /.tor, then default to
1001 LOCALSTATEDIR/tor instead.
1002 - Implement --verify-config command-line option to check if your torrc
1003 is valid without actually launching Tor.
1005 o Logging improvements:
1006 - When dirservers refuse a server descriptor, we now log its
1007 contactinfo, platform, and the poster's IP address.
1008 - Only warn once per nickname from add_nickname_list_to_smartlist()
1009 per failure, so an entrynode or exitnode choice that's down won't
1011 - When we're connecting to an OR and he's got a different nickname/key
1012 than we were expecting, only complain loudly if we're an OP or a
1013 dirserver. Complaining loudly to the OR admins just confuses them.
1014 - Whine at you if you're a server and you don't set your contactinfo.
1015 - Warn when exit policy implicitly allows local addresses.
1016 - Give a better warning when some other server advertises an
1017 ORPort that is actually an apache running ssl.
1018 - If we get an incredibly skewed timestamp from a dirserver mirror
1019 that isn't a verified OR, don't warn -- it's probably him that's
1021 - When a dirserver causes you to give a warn, mention which dirserver
1023 - Initialize libevent later in the startup process, so the logs are
1024 already established by the time we start logging libevent warns.
1025 - Use correct errno on win32 if libevent fails.
1026 - Check and warn about known-bad/slow libevent versions.
1027 - Stop warning about sigpipes in the logs. We're going to
1028 pretend that getting these occassionally is normal and fine.
1030 o New contrib scripts:
1031 - New experimental script tor/contrib/exitlist: a simple python
1032 script to parse directories and find Tor nodes that exit to listed
1034 - New experimental script tor/contrib/ExerciseServer.py (needs more
1035 work) that uses the controller interface to build circuits and
1036 fetch pages over them. This will help us bootstrap servers that
1037 have lots of capacity but haven't noticed it yet.
1038 - New experimental script tor/contrib/PathDemo.py (needs more work)
1039 that uses the controller interface to let you choose whole paths
1041 "<hostname>.<path,separated by dots>.<length of path>.path"
1042 - New contributed script "privoxy-tor-toggle" to toggle whether
1043 Privoxy uses Tor. Seems to be configured for Debian by default.
1044 - Have torctl.in/tor.sh.in check for location of su binary (needed
1048 - chdir() to your datadirectory at the *end* of the daemonize process,
1049 not the beginning. This was a problem because the first time you
1050 run tor, if your datadir isn't there, and you have runasdaemon set
1051 to 1, it will try to chdir to it before it tries to create it. Oops.
1052 - Fix several double-mark-for-close bugs, e.g. where we were finding
1053 a conn for a cell even if that conn is already marked for close.
1054 - Stop most cases of hanging up on a socks connection without sending
1056 - Fix a bug in the RPM package: set home directory for _tor to
1057 something more reasonable when first installing.
1058 - Stop putting nodename in the Platform string in server descriptors.
1059 It doesn't actually help, and it is confusing/upsetting some people.
1060 - When using preferred entry or exit nodes, ignore whether the
1061 circuit wants uptime or capacity. They asked for the nodes, they
1063 - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
1064 artificially capped at 500kB.
1065 - Cache local dns resolves correctly even when they're .exit
1067 - If we're hibernating and we get a SIGINT, exit immediately.
1068 - tor-resolve requests were ignoring .exit if there was a working circuit
1069 they could use instead.
1070 - Pay more attention to the ClientOnly config option.
1071 - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in certain
1072 installer screens; and don't put stuff into StartupItems unless
1073 the user asks you to.
1076 - Rewrite address "serifos.exit" to "externalIP.serifos.exit"
1077 rather than just rejecting it.
1078 - If our clock jumps forward by 100 seconds or more, assume something
1079 has gone wrong with our network and abandon all not-yet-used circs.
1080 - When an application is using socks5, give him the whole variety of
1081 potential socks5 responses (connect refused, host unreachable, etc),
1082 rather than just "success" or "failure".
1083 - A more sane version numbering system. See
1084 http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
1085 - Change version parsing logic: a version is "obsolete" if it is not
1086 recommended and (1) there is a newer recommended version in the
1087 same series, or (2) there are no recommended versions in the same
1088 series, but there are some recommended versions in a newer series.
1089 A version is "new" if it is newer than any recommended version in
1091 - Report HTTP reasons to client when getting a response from directory
1092 servers -- so you can actually know what went wrong.
1093 - Reject odd-looking addresses at the client (e.g. addresses that
1094 contain a colon), rather than having the server drop them because
1096 - Stop publishing socksport in the directory, since it's not
1097 actually meant to be public. For compatibility, publish a 0 there
1099 - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
1100 cookies to disk and doesn't log each web request to disk. (Thanks
1101 to Brett Carrington for pointing this out.)
1102 - Add OSX uninstall instructions. An actual uninstall script will
1104 - Add "opt hibernating 1" to server descriptor to make it clearer
1105 whether the server is hibernating.
1108 Changes in version 0.0.9.10 - 2005-06-16
1109 o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
1110 - Refuse relay cells that claim to have a length larger than the
1111 maximum allowed. This prevents a potential attack that could read
1112 arbitrary memory (e.g. keys) from an exit server's process
1116 Changes in version 0.0.9.9 - 2005-04-23
1117 o Bugfixes on 0.0.9.x:
1118 - If unofficial Tor clients connect and send weird TLS certs, our
1119 Tor server triggers an assert. This release contains a minimal
1120 backport from the broader fix that we put into 0.1.0.4-rc.
1123 Changes in version 0.0.9.8 - 2005-04-07
1124 o Bugfixes on 0.0.9.x:
1125 - We have a bug that I haven't found yet. Sometimes, very rarely,
1126 cpuworkers get stuck in the 'busy' state, even though the cpuworker
1127 thinks of itself as idle. This meant that no new circuits ever got
1128 established. Here's a workaround to kill any cpuworker that's been
1129 busy for more than 100 seconds.
1132 Changes in version 0.0.9.7 - 2005-04-01
1133 o Bugfixes on 0.0.9.x:
1134 - Fix another race crash bug (thanks to Glenn Fink for reporting).
1135 - Compare identity to identity, not to nickname, when extending to
1136 a router not already in the directory. This was preventing us from
1137 extending to unknown routers. Oops.
1138 - Make sure to create OS X Tor user in <500 range, so we aren't
1139 creating actual system users.
1140 - Note where connection-that-hasn't-sent-end was marked, and fix
1141 a few really loud instances of this harmless bug (it's fixed more
1145 Changes in version 0.0.9.6 - 2005-03-24
1146 o Bugfixes on 0.0.9.x (crashes and asserts):
1147 - Add new end stream reasons to maintainance branch. Fix bug where
1148 reason (8) could trigger an assert. Prevent bug from recurring.
1149 - Apparently win32 stat wants paths to not end with a slash.
1150 - Fix assert triggers in assert_cpath_layer_ok(), where we were
1151 blowing away the circuit that conn->cpath_layer points to, then
1152 checking to see if the circ is well-formed. Backport check to make
1153 sure we dont use the cpath on a closed connection.
1154 - Prevent circuit_resume_edge_reading_helper() from trying to package
1155 inbufs for marked-for-close streams.
1156 - Don't crash on hup if your options->address has become unresolvable.
1157 - Some systems (like OS X) sometimes accept() a connection and tell
1158 you the remote host is 0.0.0.0:0. If this happens, due to some
1159 other mis-features, we get confused; so refuse the conn for now.
1161 o Bugfixes on 0.0.9.x (other):
1162 - Fix harmless but scary "Unrecognized content encoding" warn message.
1163 - Add new stream error reason: TORPROTOCOL reason means "you are not
1164 speaking a version of Tor I understand; say bye-bye to your stream."
1165 - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
1166 into the future, now that we are more tolerant of skew. This
1167 resolves a bug where a Tor server would refuse to cache a directory
1168 because all the directories it gets are too far in the future;
1169 yet the Tor server never logs any complaints about clock skew.
1170 - Mac packaging magic: make man pages useable, and do not overwrite
1171 existing torrc files.
1172 - Make OS X log happily to /var/log/tor/tor.log
1175 Changes in version 0.0.9.5 - 2005-02-22
1176 o Bugfixes on 0.0.9.x:
1177 - Fix an assert race at exit nodes when resolve requests fail.
1178 - Stop picking unverified dir mirrors--it only leads to misery.
1179 - Patch from Matt Edman to make NT services work better. Service
1180 support is still not compiled into the executable by default.
1181 - Patch from Dmitri Bely so the Tor service runs better under
1182 the win32 SYSTEM account.
1183 - Make tor-resolve actually work (?) on Win32.
1184 - Fix a sign bug when getrlimit claims to have 4+ billion
1185 file descriptors available.
1186 - Stop refusing to start when bandwidthburst == bandwidthrate.
1187 - When create cells have been on the onion queue more than five
1188 seconds, just send back a destroy and take them off the list.
1191 Changes in version 0.0.9.4 - 2005-02-03
1192 o Bugfixes on 0.0.9:
1193 - Fix an assert bug that took down most of our servers: when
1194 a server claims to have 1 GB of bandwidthburst, don't
1196 - Don't crash as badly if we have spawned the max allowed number
1197 of dnsworkers, or we're out of file descriptors.
1198 - Block more file-sharing ports in the default exit policy.
1199 - MaxConn is now automatically set to the hard limit of max
1200 file descriptors we're allowed (ulimit -n), minus a few for
1202 - Give a clearer message when servers need to raise their
1203 ulimit -n when they start running out of file descriptors.
1204 - SGI Compatibility patches from Jan Schaumann.
1205 - Tolerate a corrupt cached directory better.
1206 - When a dirserver hasn't approved your server, list which one.
1207 - Go into soft hibernation after 95% of the bandwidth is used,
1208 not 99%. This is especially important for daily hibernators who
1209 have a small accounting max. Hopefully it will result in fewer
1210 cut connections when the hard hibernation starts.
1211 - Load-balance better when using servers that claim more than
1212 800kB/s of capacity.
1213 - Make NT services work (experimental, only used if compiled in).
1216 Changes in version 0.0.9.3 - 2005-01-21
1217 o Bugfixes on 0.0.9:
1218 - Backport the cpu use fixes from main branch, so busy servers won't
1219 need as much processor time.
1220 - Work better when we go offline and then come back, or when we
1221 run Tor at boot before the network is up. We do this by
1222 optimistically trying to fetch a new directory whenever an
1223 application request comes in and we think we're offline -- the
1224 human is hopefully a good measure of when the network is back.
1225 - Backport some minimal hidserv bugfixes: keep rend circuits open as
1226 long as you keep using them; actually publish hidserv descriptors
1227 shortly after they change, rather than waiting 20-40 minutes.
1228 - Enable Mac startup script by default.
1229 - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
1230 - When you update AllowUnverifiedNodes or FirewallPorts via the
1231 controller's setconf feature, we were always appending, never
1233 - When you update HiddenServiceDir via setconf, it was screwing up
1234 the order of reading the lines, making it fail.
1235 - Do not rewrite a cached directory back to the cache; otherwise we
1236 will think it is recent and not fetch a newer one on startup.
1237 - Workaround for webservers that lie about Content-Encoding: Tor
1238 now tries to autodetect compressed directories and compression
1239 itself. This lets us Proxypass dir fetches through apache.
1242 Changes in version 0.0.9.2 - 2005-01-04
1243 o Bugfixes on 0.0.9 (crashes and asserts):
1244 - Fix an assert on startup when the disk is full and you're logging
1246 - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
1247 style address, then we'd crash.
1248 - Fix an assert trigger when the running-routers string we get from
1249 a dirserver is broken.
1250 - Make worker threads start and run on win32. Now win32 servers
1252 - Bandaid (not actually fix, but now it doesn't crash) an assert
1253 where the dns worker dies mysteriously and the main Tor process
1254 doesn't remember anything about the address it was resolving.
1256 o Bugfixes on 0.0.9 (Win32):
1257 - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
1258 name out of the warning/assert messages.
1259 - Fix a superficial "unhandled error on read" bug on win32.
1260 - The win32 installer no longer requires a click-through for our
1261 license, since our Free Software license grants rights but does not
1263 - Win32: When connecting to a dirserver fails, try another one
1264 immediately. (This was already working for non-win32 Tors.)
1265 - Stop trying to parse $HOME on win32 when hunting for default
1267 - Make tor-resolve.c work on win32 by calling network_init().
1269 o Bugfixes on 0.0.9 (other):
1270 - Make 0.0.9.x build on Solaris again.
1271 - Due to a fencepost error, we were blowing away the \n when reporting
1272 confvalue items in the controller. So asking for multiple config
1273 values at once couldn't work.
1274 - When listing circuits that are pending on an opening OR connection,
1275 if we're an OR we were listing circuits that *end* at us as
1276 being pending on every listener, dns/cpu worker, etc. Stop that.
1277 - Dirservers were failing to create 'running-routers' or 'directory'
1278 strings if we had more than some threshold of routers. Fix them so
1279 they can handle any number of routers.
1280 - Fix a superficial "Duplicate mark for close" bug.
1281 - Stop checking for clock skew for OR connections, even for servers.
1282 - Fix a fencepost error that was chopping off the last letter of any
1283 nickname that is the maximum allowed nickname length.
1284 - Update URLs in log messages so they point to the new website.
1285 - Fix a potential problem in mangling server private keys while
1286 writing to disk (not triggered yet, as far as we know).
1287 - Include the licenses for other free software we include in Tor,
1288 now that we're shipping binary distributions more regularly.
1291 Changes in version 0.0.9.1 - 2004-12-15
1292 o Bugfixes on 0.0.9:
1293 - Make hibernation actually work.
1294 - Make HashedControlPassword config option work.
1295 - When we're reporting event circuit status to a controller,
1296 don't use the stream status code.
1299 Changes in version 0.0.9 - 2004-12-12
1300 o Bugfixes on 0.0.8.1 (Crashes and asserts):
1301 - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
1302 write() call will fail and we handle it there.
1303 - When we run out of disk space, or other log writing error, don't
1304 crash. Just stop logging to that log and continue.
1305 - Fix isspace() and friends so they still make Solaris happy
1306 but also so they don't trigger asserts on win32.
1307 - Fix assert failure on malformed socks4a requests.
1308 - Fix an assert bug where a hidden service provider would fail if
1309 the first hop of his rendezvous circuit was down.
1310 - Better handling of size_t vs int, so we're more robust on 64
1313 o Bugfixes on 0.0.8.1 (Win32):
1314 - Make windows sockets actually non-blocking (oops), and handle
1315 win32 socket errors better.
1316 - Fix parse_iso_time on platforms without strptime (eg win32).
1317 - win32: when being multithreaded, leave parent fdarray open.
1318 - Better handling of winsock includes on non-MSV win32 compilers.
1319 - Change our file IO stuff (especially wrt OpenSSL) so win32 is
1321 - Make unit tests work on win32.
1323 o Bugfixes on 0.0.8.1 (Path selection and streams):
1324 - Calculate timeout for waiting for a connected cell from the time
1325 we sent the begin cell, not from the time the stream started. If
1326 it took a long time to establish the circuit, we would time out
1327 right after sending the begin cell.
1328 - Fix router_compare_addr_to_addr_policy: it was not treating a port
1329 of * as always matching, so we were picking reject *:* nodes as
1330 exit nodes too. Oops.
1331 - When read() failed on a stream, we would close it without sending
1332 back an end. So 'connection refused' would simply be ignored and
1333 the user would get no response.
1334 - Stop a sigpipe: when an 'end' cell races with eof from the app,
1335 we shouldn't hold-open-until-flush if the eof arrived first.
1336 - Let resolve conns retry/expire also, rather than sticking around
1338 - Fix more dns related bugs: send back resolve_failed and end cells
1339 more reliably when the resolve fails, rather than closing the
1340 circuit and then trying to send the cell. Also attach dummy resolve
1341 connections to a circuit *before* calling dns_resolve(), to fix
1342 a bug where cached answers would never be sent in RESOLVED cells.
1344 o Bugfixes on 0.0.8.1 (Circuits):
1345 - Finally fix a bug that's been plaguing us for a year:
1346 With high load, circuit package window was reaching 0. Whenever
1347 we got a circuit-level sendme, we were reading a lot on each
1348 socket, but only writing out a bit. So we would eventually reach
1349 eof. This would be noticed and acted on even when there were still
1350 bytes sitting in the inbuf.
1351 - Use identity comparison, not nickname comparison, to choose which
1352 half of circuit-ID-space each side gets to use. This is needed
1353 because sometimes we think of a router as a nickname, and sometimes
1354 as a hex ID, and we can't predict what the other side will do.
1356 o Bugfixes on 0.0.8.1 (Other):
1357 - Fix a whole slew of memory leaks.
1358 - Disallow NDEBUG. We don't ever want anybody to turn off debug.
1359 - If we are using select, make sure we stay within FD_SETSIZE.
1360 - When poll() is interrupted, we shouldn't believe the revents values.
1361 - Add a FAST_SMARTLIST define to optionally inline smartlist_get
1362 and smartlist_len, which are two major profiling offenders.
1363 - If do_hup fails, actually notice.
1364 - Flush the log file descriptor after we print "Tor opening log file",
1365 so we don't see those messages days later.
1366 - Hidden service operators now correctly handle version 1 style
1367 INTRODUCE1 cells (nobody generates them still, so not a critical
1369 - Handle more errnos from accept() without closing the listener.
1370 Some OpenBSD machines were closing their listeners because
1371 they ran out of file descriptors.
1372 - Some people had wrapped their tor client/server in a script
1373 that would restart it whenever it died. This did not play well
1374 with our "shut down if your version is obsolete" code. Now people
1375 don't fetch a new directory if their local cached version is
1377 - Make our autogen.sh work on ksh as well as bash.
1378 - Better torrc example lines for dirbindaddress and orbindaddress.
1379 - Improved bounds checking on parsed ints (e.g. config options and
1380 the ones we find in directories.)
1381 - Stop using separate defaults for no-config-file and
1382 empty-config-file. Now you have to explicitly turn off SocksPort,
1383 if you don't want it open.
1384 - We were starting to daemonize before we opened our logs, so if
1385 there were any problems opening logs, we would complain to stderr,
1386 which wouldn't work, and then mysteriously exit.
1387 - If a verified OR connects to us before he's uploaded his descriptor,
1388 or we verify him and hup but he still has the original TLS
1389 connection, then conn->nickname is still set like he's unverified.
1391 o Code security improvements, inspired by Ilja:
1392 - tor_snprintf wrapper over snprintf with consistent (though not C99)
1394 - Replace sprintf with tor_snprintf. (I think they were all safe, but
1396 - Replace strcpy/strncpy with strlcpy in more places.
1397 - Avoid strcat; use tor_snprintf or strlcat instead.
1399 o Features (circuits and streams):
1400 - New circuit building strategy: keep a list of ports that we've
1401 used in the past 6 hours, and always try to have 2 circuits open
1402 or on the way that will handle each such port. Seed us with port
1403 80 so web users won't complain that Tor is "slow to start up".
1404 - Make kill -USR1 dump more useful stats about circuits.
1405 - When warning about retrying or giving up, print the address, so
1406 the user knows which one it's talking about.
1407 - If you haven't used a clean circuit in an hour, throw it away,
1408 just to be on the safe side. (This means after 6 hours a totally
1409 unused Tor client will have no circuits open.)
1410 - Support "foo.nickname.exit" addresses, to let Alice request the
1411 address "foo" as viewed by exit node "nickname". Based on a patch
1413 - If your requested entry or exit node has advertised bandwidth 0,
1415 - Be more greedy about filling up relay cells -- we try reading again
1416 once we've processed the stuff we read, in case enough has arrived
1417 to fill the last cell completely.
1418 - Refuse application socks connections to port 0.
1419 - Use only 0.0.9pre1 and later servers for resolve cells.
1421 o Features (bandwidth):
1422 - Hibernation: New config option "AccountingMax" lets you
1423 set how many bytes per month (in each direction) you want to
1424 allow your server to consume. Rather than spreading those
1425 bytes out evenly over the month, we instead hibernate for some
1426 of the month and pop up at a deterministic time, work until
1427 the bytes are consumed, then hibernate again. Config option
1428 "MonthlyAccountingStart" lets you specify which day of the month
1429 your billing cycle starts on.
1430 - Implement weekly/monthly/daily accounting: now you specify your
1431 hibernation properties by
1432 AccountingMax N bytes|KB|MB|GB|TB
1433 AccountingStart day|week|month [day] HH:MM
1434 Defaults to "month 1 0:00".
1435 - Let bandwidth and interval config options be specified as 5 bytes,
1436 kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
1438 o Features (directories):
1439 - New "router-status" line in directory, to better bind each verified
1440 nickname to its identity key.
1441 - Clients can ask dirservers for /dir.z to get a compressed version
1442 of the directory. Only works for servers running 0.0.9, of course.
1443 - Make clients cache directories and use them to seed their router
1444 lists at startup. This means clients have a datadir again.
1445 - Respond to content-encoding headers by trying to uncompress as
1447 - Clients and servers now fetch running-routers; cache
1448 running-routers; compress running-routers; serve compressed
1450 - Make moria2 advertise a dirport of 80, so people behind firewalls
1451 will be able to get a directory.
1452 - Http proxy support
1453 - Dirservers translate requests for http://%s:%d/x to /x
1454 - You can specify "HttpProxy %s[:%d]" and all dir fetches will
1455 be routed through this host.
1456 - Clients ask for /tor/x rather than /x for new enough dirservers.
1457 This way we can one day coexist peacefully with apache.
1458 - Clients specify a "Host: %s%d" http header, to be compatible
1459 with more proxies, and so running squid on an exit node can work.
1460 - Protect dirservers from overzealous descriptor uploading -- wait
1461 10 seconds after directory gets dirty, before regenerating.
1463 o Features (packages and install):
1464 - Add NSI installer contributed by J Doe.
1465 - Apply NT service patch from Osamu Fujino. Still needs more work.
1466 - Commit VC6 and VC7 workspace/project files.
1467 - Commit a tor.spec for making RPM files, with help from jbash.
1468 - Add contrib/torctl.in contributed by Glenn Fink.
1469 - Make expand_filename handle ~ and ~username.
1470 - Use autoconf to enable largefile support where necessary. Use
1471 ftello where available, since ftell can fail at 2GB.
1472 - Ship src/win32/ in the tarball, so people can use it to build.
1473 - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
1476 o Features (ui controller):
1477 - Control interface: a separate program can now talk to your
1478 client/server over a socket, and get/set config options, receive
1479 notifications of circuits and streams starting/finishing/dying,
1480 bandwidth used, etc. The next step is to get some GUIs working.
1481 Let us know if you want to help out. See doc/control-spec.txt .
1482 - Ship a contrib/tor-control.py as an example script to interact
1483 with the control port.
1484 - "tor --hash-password zzyxz" will output a salted password for
1485 use in authenticating to the control interface.
1486 - Implement the control-spec's SAVECONF command, to write your
1487 configuration to torrc.
1488 - Get cookie authentication for the controller closer to working.
1489 - When set_conf changes our server descriptor, upload a new copy.
1490 But don't upload it too often if there are frequent changes.
1492 o Features (config and command-line):
1493 - Deprecate unofficial config option abbreviations, and abbreviations
1494 not on the command line.
1495 - Configuration infrastructure support for warning on obsolete
1497 - Give a slightly more useful output for "tor -h".
1498 - Break DirFetchPostPeriod into:
1499 - DirFetchPeriod for fetching full directory,
1500 - StatusFetchPeriod for fetching running-routers,
1501 - DirPostPeriod for posting server descriptor,
1502 - RendPostPeriod for posting hidden service descriptors.
1503 - New log format in config:
1504 "Log minsev[-maxsev] stdout|stderr|syslog" or
1505 "Log minsev[-maxsev] file /var/foo"
1506 - DirPolicy config option, to let people reject incoming addresses
1507 from their dirserver.
1508 - "tor --list-fingerprint" will list your identity key fingerprint
1510 - Make tor --version --version dump the cvs Id of every file.
1511 - New 'MyFamily nick1,...' config option for a server to
1512 specify other servers that shouldn't be used in the same circuit
1513 with it. Only believed if nick1 also specifies us.
1514 - New 'NodeFamily nick1,nick2,...' config option for a client to
1515 specify nodes that it doesn't want to use in the same circuit.
1516 - New 'Redirectexit pattern address:port' config option for a
1517 server to redirect exit connections, e.g. to a local squid.
1518 - Add "pass" target for RedirectExit, to make it easier to break
1519 out of a sequence of RedirectExit rules.
1520 - Make the dirservers file obsolete.
1521 - Include a dir-signing-key token in directories to tell the
1522 parsing entity which key is being used to sign.
1523 - Remove the built-in bulky default dirservers string.
1524 - New config option "Dirserver %s:%d [fingerprint]", which can be
1525 repeated as many times as needed. If no dirservers specified,
1526 default to moria1,moria2,tor26.
1527 - Make 'Routerfile' config option obsolete.
1528 - Discourage people from setting their dirfetchpostperiod more often
1529 than once per minute.
1532 - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
1533 get back to normal.)
1534 - Accept *:706 (silc) in default exit policy.
1535 - Implement new versioning format for post 0.1.
1536 - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
1537 log more informatively.
1538 - Check clock skew for verified servers, but allow unverified
1539 servers and clients to have any clock skew.
1540 - Make sure the hidden service descriptors are at a random offset
1541 from each other, to hinder linkability.
1542 - Clients now generate a TLS cert too, in preparation for having
1543 them act more like real nodes.
1544 - Add a pure-C tor-resolve implementation.
1545 - Use getrlimit and friends to ensure we can reach MaxConn (currently
1546 1024) file descriptors.
1547 - Raise the max dns workers from 50 to 100.
1550 Changes in version 0.0.8.1 - 2004-10-13
1552 - Fix a seg fault that can be triggered remotely for Tor
1553 clients/servers with an open dirport.
1554 - Fix a rare assert trigger, where routerinfos for entries in
1555 our cpath would expire while we're building the path.
1556 - Fix a bug in OutboundBindAddress so it (hopefully) works.
1557 - Fix a rare seg fault for people running hidden services on
1558 intermittent connections.
1559 - Fix a bug in parsing opt keywords with objects.
1560 - Fix a stale pointer assert bug when a stream detaches and
1562 - Fix a string format vulnerability (probably not exploitable)
1563 in reporting stats locally.
1564 - Fix an assert trigger: sometimes launching circuits can fail
1565 immediately, e.g. because too many circuits have failed recently.
1566 - Fix a compile warning on 64 bit platforms.
1569 Changes in version 0.0.8 - 2004-08-25
1571 - Made our unit tests compile again on OpenBSD 3.5, and tor
1572 itself compile again on OpenBSD on a sparc64.
1573 - We were neglecting milliseconds when logging on win32, so
1574 everything appeared to happen at the beginning of each second.
1575 - Check directory signature _before_ you decide whether you're
1576 you're running an obsolete version and should exit.
1577 - Check directory signature _before_ you parse the running-routers
1578 list to decide who's running.
1579 - Check return value of fclose while writing to disk, so we don't
1580 end up with broken files when servers run out of disk space.
1581 - Port it to SunOS 5.9 / Athena
1582 - Fix two bugs in saving onion keys to disk when rotating, so
1583 hopefully we'll get fewer people using old onion keys.
1584 - Remove our mostly unused -- and broken -- hex_encode()
1585 function. Use base16_encode() instead. (Thanks to Timo Lindfors
1586 for pointing out this bug.)
1587 - Only pick and establish intro points after we've gotten a
1589 - Fix assert triggers: if the other side returns an address 0.0.0.0,
1590 don't put it into the client dns cache.
1591 - If a begin failed due to exit policy, but we believe the IP
1592 address should have been allowed, switch that router to exitpolicy
1593 reject *:* until we get our next directory.
1596 - 'Extend' relay cell payloads now include the digest of the
1597 intended next hop's identity key. Now we can verify that we're
1598 extending to the right router, and also extend to routers we
1599 hadn't heard of before.
1602 - Tor nodes can now act as relays (with an advertised ORPort)
1603 without being manually verified by the dirserver operators.
1604 - Uploaded descriptors of unverified routers are now accepted
1605 by the dirservers, and included in the directory.
1606 - Verified routers are listed by nickname in the running-routers
1607 list; unverified routers are listed as "$<fingerprint>".
1608 - We now use hash-of-identity-key in most places rather than
1609 nickname or addr:port, for improved security/flexibility.
1610 - AllowUnverifiedNodes config option to let circuits choose no-name
1611 routers in entry,middle,exit,introduction,rendezvous positions.
1612 Allow middle and rendezvous positions by default.
1613 - When picking unverified routers, skip those with low uptime and/or
1614 low bandwidth, depending on what properties you care about.
1615 - ClientOnly option for nodes that never want to become servers.
1616 - Directory caching.
1617 - "AuthoritativeDir 1" option for the official dirservers.
1618 - Now other nodes (clients and servers) will cache the latest
1619 directory they've pulled down.
1620 - They can enable their DirPort to serve it to others.
1621 - Clients will pull down a directory from any node with an open
1622 DirPort, and check the signature/timestamp correctly.
1623 - Authoritative dirservers now fetch directories from other
1624 authdirservers, to stay better synced.
1625 - Running-routers list tells who's down also, along with noting
1626 if they're verified (listed by nickname) or unverified (listed
1628 - Allow dirservers to serve running-router list separately.
1629 This isn't used yet.
1630 - You can now fetch $DIRURL/running-routers to get just the
1631 running-routers line, not the whole descriptor list. (But
1632 clients don't use this yet.)
1633 - Clients choose nodes proportional to advertised bandwidth.
1634 - Clients avoid using nodes with low uptime as introduction points.
1635 - Handle servers with dynamic IP addresses: don't just replace
1636 options->Address with the resolved one at startup, and
1637 detect our address right before we make a routerinfo each time.
1638 - 'FascistFirewall' option to pick dirservers and ORs on specific
1639 ports; plus 'FirewallPorts' config option to tell FascistFirewall
1640 which ports are open. (Defaults to 80,443)
1641 - Try other dirservers immediately if the one you try is down. This
1642 should tolerate down dirservers better now.
1643 - ORs connect-on-demand to other ORs
1644 - If you get an extend cell to an OR you're not connected to,
1645 connect, handshake, and forward the create cell.
1646 - The authoritative dirservers stay connected to everybody,
1647 and everybody stays connected to 0.0.7 servers, but otherwise
1648 clients/servers expire unused connections after 5 minutes.
1649 - When servers get a sigint, they delay 30 seconds (refusing new
1650 connections) then exit. A second sigint causes immediate exit.
1651 - File and name management:
1652 - Look for .torrc if no CONFDIR "torrc" is found.
1653 - If no datadir is defined, then choose, make, and secure ~/.tor
1655 - If torrc not found, exitpolicy reject *:*.
1656 - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
1657 - If no nickname is defined, derive default from hostname.
1658 - Rename secret key files, e.g. identity.key -> secret_id_key,
1659 to discourage people from mailing their identity key to tor-ops.
1660 - Refuse to build a circuit before the directory has arrived --
1661 it won't work anyway, since you won't know the right onion keys
1663 - Parse tor version numbers so we can do an is-newer-than check
1664 rather than an is-in-the-list check.
1665 - New socks command 'resolve', to let us shim gethostbyname()
1667 - A 'tor_resolve' script to access the socks resolve functionality.
1668 - A new socks-extensions.txt doc file to describe our
1669 interpretation and extensions to the socks protocols.
1670 - Add a ContactInfo option, which gets published in descriptor.
1671 - Write tor version at the top of each log file
1672 - New docs in the tarball:
1674 - Document that you should proxy your SSL traffic too.
1675 - Log a warning if the user uses an unsafe socks variant, so people
1676 are more likely to learn about privoxy or socat.
1677 - Log a warning if you're running an unverified server, to let you
1678 know you might want to get it verified.
1679 - Change the default exit policy to reject the default edonkey,
1680 kazaa, gnutella ports.
1681 - Add replace_file() to util.[ch] to handle win32's rename().
1682 - Publish OR uptime in descriptor (and thus in directory) too.
1683 - Remember used bandwidth (both in and out), and publish 15-minute
1684 snapshots for the past day into our descriptor.
1685 - Be more aggressive about trying to make circuits when the network
1686 has changed (e.g. when you unsuspend your laptop).
1687 - Check for time skew on http headers; report date in response to
1689 - If the entrynode config line has only one node, don't pick it as
1691 - Add strict{entry|exit}nodes config options. If set to 1, then
1692 we refuse to build circuits that don't include the specified entry
1694 - OutboundBindAddress config option, to bind to a specific
1695 IP address for outgoing connect()s.
1696 - End truncated log entries (e.g. directories) with "[truncated]".
1699 Changes in version 0.0.7.3 - 2004-08-12
1700 o Stop dnsworkers from triggering an assert failure when you
1701 ask them to resolve the host "".
1704 Changes in version 0.0.7.2 - 2004-07-07
1705 o A better fix for the 0.0.0.0 problem, that will hopefully
1706 eliminate the remaining related assertion failures.
1709 Changes in version 0.0.7.1 - 2004-07-04
1710 o When an address resolves to 0.0.0.0, treat it as a failed resolve,
1711 since internally we use 0.0.0.0 to signify "not yet resolved".
1714 Changes in version 0.0.7 - 2004-06-07
1715 o Fixes for crashes and other obnoxious bugs:
1716 - Fix an epipe bug: sometimes when directory connections failed
1717 to connect, we would give them a chance to flush before closing
1719 - When we detached from a circuit because of resolvefailed, we
1720 would immediately try the same circuit twice more, and then
1721 give up on the resolve thinking we'd tried three different
1723 - Limit the number of intro circuits we'll attempt to build for a
1724 hidden service per 15-minute period.
1725 - Check recommended-software string *early*, before actually parsing
1726 the directory. Thus we can detect an obsolete version and exit,
1727 even if the new directory format doesn't parse.
1728 o Fixes for security bugs:
1729 - Remember which nodes are dirservers when you startup, and if a
1730 random OR enables his dirport, don't automatically assume he's
1731 a trusted dirserver.
1733 - Directory connections were asking the wrong poll socket to
1734 start writing, and not asking themselves to start writing.
1735 - When we detached from a circuit because we sent a begin but
1736 didn't get a connected, we would use it again the first time;
1737 but after that we would correctly switch to a different one.
1738 - Stop warning when the first onion decrypt attempt fails; they
1739 will sometimes legitimately fail now that we rotate keys.
1740 - Override unaligned-access-ok check when $host_cpu is ia64 or
1741 arm. Apparently they allow it but the kernel whines.
1742 - Dirservers try to reconnect periodically too, in case connections
1744 - Fix some memory leaks in directory servers.
1745 - Allow backslash in Win32 filenames.
1746 - Made Tor build complain-free on FreeBSD, hopefully without
1747 breaking other BSD builds. We'll see.
1748 - Check directory signatures based on name of signer, not on whom
1749 we got the directory from. This will let us cache directories more
1751 - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
1754 - Doxygen markup on all functions and global variables.
1755 - Make directory functions update routerlist, not replace it. So
1756 now directory disagreements are not so critical a problem.
1757 - Remove the upper limit on number of descriptors in a dirserver's
1758 directory (not that we were anywhere close).
1759 - Allow multiple logfiles at different severity ranges.
1760 - Allow *BindAddress to specify ":port" rather than setting *Port
1761 separately. Allow multiple instances of each BindAddress config
1762 option, so you can bind to multiple interfaces if you want.
1763 - Allow multiple exit policy lines, which are processed in order.
1764 Now we don't need that huge line with all the commas in it.
1765 - Enable accept/reject policies on SOCKS connections, so you can bind
1766 to 0.0.0.0 but still control who can use your OP.
1767 - Updated the man page to reflect these features.
1770 Changes in version 0.0.6.2 - 2004-05-16
1771 o Our integrity-checking digest was checking only the most recent cell,
1772 not the previous cells like we'd thought.
1773 Thanks to Stefan Mark for finding the flaw!
1776 Changes in version 0.0.6.1 - 2004-05-06
1777 o Fix two bugs in our AES counter-mode implementation (this affected
1778 onion-level stream encryption, but not TLS-level). It turns
1779 out we were doing something much more akin to a 16-character
1780 polyalphabetic cipher. Oops.
1781 Thanks to Stefan Mark for finding the flaw!
1782 o Retire moria3 as a directory server, and add tor26 as a directory
1786 Changes in version 0.0.6 - 2004-05-02
1788 - Hidden services and rendezvous points are implemented. Go to
1789 http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
1790 hidden services. (This only works via a socks4a proxy such as
1791 Privoxy, and currently it's quite slow.)
1792 - We now rotate link (tls context) keys and onion keys.
1793 - CREATE cells now include oaep padding, so you can tell
1794 if you decrypted them correctly.
1795 - Retry stream correctly when we fail to connect because of
1796 exit-policy-reject (should try another) or can't-resolve-address.
1797 - When we hup a dirserver and we've *removed* a server from the
1798 approved-routers list, now we remove that server from the
1799 in-memory directories too.
1800 - Add bandwidthburst to server descriptor.
1801 - Directories now say which dirserver signed them.
1802 - Use a tor_assert macro that logs failed assertions too.
1803 - Since we don't support truncateds much, don't bother sending them;
1804 just close the circ.
1805 - Fetch randomness from /dev/urandom better (not via fopen/fread)
1806 - Better debugging for tls errors
1807 - Set Content-Type on the directory and hidserv descriptor.
1808 - Remove IVs from cipher code, since AES-ctr has none.
1810 - Fix an assert trigger for exit nodes that's been plaguing us since
1811 the days of 0.0.2prexx (thanks weasel!)
1812 - Fix a bug where we were closing tls connections intermittently.
1813 It turns out openssl keeps its errors around -- so if an error
1814 happens, and you don't ask about it, and then another openssl
1815 operation happens and succeeds, and you ask if there was an error,
1816 it tells you about the first error.
1817 - Fix a bug that's been lurking since 27 may 03 (!)
1818 When passing back a destroy cell, we would use the wrong circ id.
1819 - Don't crash if a conn that sent a begin has suddenly lost its circuit.
1820 - Some versions of openssl have an SSL_pending function that erroneously
1821 returns bytes when there is a non-application record pending.
1822 - Win32 fixes. Tor now compiles on win32 with no warnings/errors.
1823 o We were using an array of length zero in a few places.
1824 o Win32's gethostbyname can't resolve an IP to an IP.
1825 o Win32's close can't close a socket.
1826 o Handle windows socket errors correctly.
1828 - check for <sys/limits.h> so we build on FreeBSD again, and
1829 <machine/limits.h> for NetBSD.
1832 Changes in version 0.0.5 - 2004-03-30
1833 o Install torrc as torrc.sample -- we no longer clobber your
1835 o Fix mangled-state bug in directory fetching (was causing sigpipes).
1836 o Only build circuits after we've fetched the directory: clients were
1837 using only the directory servers before they'd fetched a directory.
1838 This also means longer startup time; so it goes.
1839 o Fix an assert trigger where an OP would fail to handshake, and we'd
1840 expect it to have a nickname.
1841 o Work around a tsocks bug: do a socks reject when AP connection dies
1842 early, else tsocks goes into an infinite loop.
1843 o Hold socks connection open until reply is flushed (if possible)
1844 o Make exit nodes resolve IPs to IPs immediately, rather than asking
1845 the dns farm to do it.
1846 o Fix c99 aliasing warnings in rephist.c
1847 o Don't include server descriptors that are older than 24 hours in the
1849 o Give socks 'reject' replies their whole 15s to attempt to flush,
1850 rather than seeing the 60s timeout and assuming the flush had failed.
1851 o Clean automake droppings from the cvs repository
1852 o Add in a 'notice' log level for things the operator should hear
1853 but that aren't warnings
1856 Changes in version 0.0.4 - 2004-03-26
1857 o When connecting to a dirserver or OR and the network is down,
1861 Changes in version 0.0.3 - 2004-03-26
1862 o Warn and fail if server chose a nickname with illegal characters
1863 o Port to Solaris and Sparc:
1864 - include missing header fcntl.h
1865 - have autoconf find -lsocket -lnsl automatically
1866 - deal with hardware word alignment
1867 - make uname() work (solaris has a different return convention)
1868 - switch from using signal() to sigaction()
1869 o Preliminary work on reputation system:
1870 - Keep statistics on success/fail of connect attempts; they're published
1871 by kill -USR1 currently.
1872 - Add a RunTesting option to try to learn link state by creating test
1873 circuits, even when SocksPort is off.
1874 - Remove unused open circuits when there are too many.
1877 Changes in version 0.0.2 - 2004-03-19
1878 - Include strlcpy and strlcat for safer string ops
1879 - define INADDR_NONE so we compile (but still not run) on solaris
1882 Changes in version 0.0.2pre27 - 2004-03-14
1884 - Allow internal tor networks (we were rejecting internal IPs,
1885 now we allow them if they're set explicitly).
1886 - And fix a few endian issues.
1889 Changes in version 0.0.2pre26 - 2004-03-14
1891 - If a stream times out after 15s without a connected cell, don't
1892 try that circuit again: try a new one.
1893 - Retry streams at most 4 times. Then give up.
1894 - When a dirserver gets a descriptor from an unknown router, it
1895 logs its fingerprint (so the dirserver operator can choose to
1896 accept it even without mail from the server operator).
1897 - Inform unapproved servers when we reject their descriptors.
1898 - Make tor build on Windows again. It works as a client, who knows
1900 - Clearer instructions in the torrc for how to set up a server.
1901 - Be more efficient about reading fd's when our global token bucket
1902 (used for rate limiting) becomes empty.
1904 - Stop asserting that computers always go forward in time. It's
1906 - When we sent a cell (e.g. destroy) and then marked an OR connection
1907 expired, we might close it before finishing a flush if the other
1908 side isn't reading right then.
1909 - Don't allow dirservers to start if they haven't defined
1911 - We were caching transient dns failures. Oops.
1912 - Prevent servers from publishing an internal IP as their address.
1913 - Address a strcat vulnerability in circuit.c
1916 Changes in version 0.0.2pre25 - 2004-03-04
1918 - Put the OR's IP in its router descriptor, not its fqdn. That way
1919 we'll stop being stalled by gethostbyname for nodes with flaky dns,
1922 - If the user typed in an address that didn't resolve, the server
1926 Changes in version 0.0.2pre24 - 2004-03-03
1928 - Fix an assertion failure in dns.c, where we were trying to dequeue
1929 a pending dns resolve even if it wasn't pending
1930 - Fix a spurious socks5 warning about still trying to write after the
1931 connection is finished.
1932 - Hold certain marked_for_close connections open until they're finished
1933 flushing, rather than losing bytes by closing them too early.
1934 - Correctly report the reason for ending a stream
1935 - Remove some duplicate calls to connection_mark_for_close
1936 - Put switch_id and start_daemon earlier in the boot sequence, so it
1937 will actually try to chdir() to options.DataDirectory
1938 - Make 'make test' exit(1) if a test fails; fix some unit tests
1939 - Make tor fail when you use a config option it doesn't know about,
1940 rather than warn and continue.
1941 - Make --version work
1942 - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
1945 Changes in version 0.0.2pre23 - 2004-02-29
1947 - Print a statement when the first circ is finished, so the user
1949 - If a relay cell is unrecognized at the end of the circuit,
1950 send back a destroy. (So attacks to mutate cells are more
1952 - New config option 'excludenodes' to avoid certain nodes for circuits.
1953 - When it daemonizes, it chdir's to the DataDirectory rather than "/",
1954 so you can collect coredumps there.
1956 - Fix a bug in tls flushing where sometimes data got wedged and
1957 didn't flush until more data got sent. Hopefully this bug was
1958 a big factor in the random delays we were seeing.
1959 - Make 'connected' cells include the resolved IP, so the client
1960 dns cache actually gets populated.
1961 - Disallow changing from ORPort=0 to ORPort>0 on hup.
1962 - When we time-out on a stream and detach from the circuit, send an
1963 end cell down it first.
1964 - Only warn about an unknown router (in exitnodes, entrynodes,
1965 excludenodes) after we've fetched a directory.
1968 Changes in version 0.0.2pre22 - 2004-02-26
1970 - Servers publish less revealing uname information in descriptors.
1971 - More memory tracking and assertions, to crash more usefully when
1973 - If the default torrc isn't there, just use some default defaults.
1974 Plus provide an internal dirservers file if they don't have one.
1975 - When the user tries to use Tor as an http proxy, give them an http
1976 501 failure explaining that we're a socks proxy.
1977 - Dump a new router.desc on hup, to help confused people who change
1978 their exit policies and then wonder why router.desc doesn't reflect
1980 - Clean up the generic tor.sh init script that we ship with.
1982 - If the exit stream is pending on the resolve, and a destroy arrives,
1983 then the stream wasn't getting removed from the pending list. I
1984 think this was the one causing recent server crashes.
1985 - Use a more robust poll on OSX 10.3, since their poll is flaky.
1986 - When it couldn't resolve any dirservers, it was useless from then on.
1987 Now it reloads the RouterFile (or default dirservers) if it has no
1989 - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
1990 many users don't even *have* a /usr/local/sbin/.
1993 Changes in version 0.0.2pre21 - 2004-02-18
1995 - There's a ChangeLog file that actually reflects the changelog.
1996 - There's a 'torify' wrapper script, with an accompanying
1997 tor-tsocks.conf, that simplifies the process of using tsocks for
1998 tor. It even has a man page.
1999 - The tor binary gets installed to sbin rather than bin now.
2000 - Retry streams where the connected cell hasn't arrived in 15 seconds
2001 - Clean up exit policy handling -- get the default out of the torrc,
2002 so we can update it without forcing each server operator to fix
2004 - Allow imaps and pop3s in default exit policy
2006 - Prevent picking middleman nodes as the last node in the circuit
2009 Changes in version 0.0.2pre20 - 2004-01-30
2011 - We now have a deb package, and it's in debian unstable. Go to
2013 - I've split the TotalBandwidth option into BandwidthRate (how many
2014 bytes per second you want to allow, long-term) and
2015 BandwidthBurst (how many bytes you will allow at once before the cap
2016 kicks in). This better token bucket approach lets you, say, set
2017 BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
2018 performance while not exceeding your monthly bandwidth quota.
2019 - Push out a tls record's worth of data once you've got it, rather
2020 than waiting until you've read everything waiting to be read. This
2021 may improve performance by pipelining better. We'll see.
2022 - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
2023 from failed circuits (if they haven't been connected yet) and attach
2025 - Expire old streams that haven't managed to connect. Some day we'll
2026 have them reattach to new circuits instead.
2029 - Fix several memory leaks that were causing servers to become bloated
2031 - Fix a few very rare assert triggers. A few more remain.
2032 - Setuid to User _before_ complaining about running as root.
2035 Changes in version 0.0.2pre19 - 2004-01-07
2037 - Fix deadlock condition in dns farm. We were telling a child to die by
2038 closing the parent's file descriptor to him. But newer children were
2039 inheriting the open file descriptor from the parent, and since they
2040 weren't closing it, the socket never closed, so the child never read
2041 eof, so he never knew to exit. Similarly, dns workers were holding
2042 open other sockets, leading to all sorts of chaos.
2043 - New cleaner daemon() code for forking and backgrounding.
2044 - If you log to a file, it now prints an entry at the top of the
2045 logfile so you know it's working.
2046 - The onionskin challenge length was 30 bytes longer than necessary.
2047 - Started to patch up the spec so it's not quite so out of date.
2050 Changes in version 0.0.2pre18 - 2004-01-02
2052 - Fix endian issues with the 'integrity' field in the relay header.
2053 - Fix a potential bug where connections in state
2054 AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
2057 Changes in version 0.0.2pre17 - 2003-12-30
2059 - Made --debuglogfile (or any second log file, actually) work.
2060 - Resolved an edge case in get_unique_circ_id_by_conn where a smart
2061 adversary could force us into an infinite loop.
2064 - Each onionskin handshake now includes a hash of the computed key,
2065 to prove the server's identity and help perfect forward secrecy.
2066 - Changed cell size from 256 to 512 bytes (working toward compatibility
2068 - Changed cell length to 2 bytes, and moved it to the relay header.
2069 - Implemented end-to-end integrity checking for the payloads of
2071 - Separated streamid from 'recognized' (otherwise circuits will get
2072 messed up when we try to have streams exit from the middle). We
2073 use the integrity-checking to confirm that a cell is addressed to
2075 - Randomize the initial circid and streamid values, so an adversary who
2076 breaks into a node can't learn how many circuits or streams have
2080 Changes in version 0.0.2pre16 - 2003-12-14
2082 - Fixed a bug that made HUP trigger an assert
2083 - Fixed a bug where a circuit that immediately failed wasn't being
2084 counted as a failed circuit in counting retries.
2087 - Now we close the circuit when we get a truncated cell: otherwise we're
2088 open to an anonymity attack where a bad node in the path truncates
2089 the circuit and then we open streams at him.
2090 - Add port ranges to exit policies
2091 - Add a conservative default exit policy
2092 - Warn if you're running tor as root
2093 - on HUP, retry OR connections and close/rebind listeners
2094 - options.EntryNodes: try these nodes first when picking the first node
2095 - options.ExitNodes: if your best choices happen to include any of
2096 your preferred exit nodes, you choose among just those preferred
2098 - options.ExcludedNodes: nodes that are never picked in path building
2101 Changes in version 0.0.2pre15 - 2003-12-03
2102 o Robustness and bugfixes:
2103 - Sometimes clients would cache incorrect DNS resolves, which would
2104 really screw things up.
2105 - An OP that goes offline would slowly leak all its sockets and stop
2107 - A wide variety of bugfixes in exit node selection, exit policy
2108 handling, and processing pending streams when a new circuit is
2110 - Pick nodes for a path only from those the directory says are up
2111 - Choose randomly from all running dirservers, not always the first one
2112 - Increase allowed http header size for directory fetch.
2113 - Stop writing to stderr (if we're daemonized it will be closed).
2114 - Enable -g always, so cores will be more useful to me.
2115 - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
2118 - Wrote a man page. It lists commonly used options.
2121 - Change default loglevel to warn.
2122 - Make PidFile default to null rather than littering in your CWD.
2123 - OnionRouter config option is now obsolete. Instead it just checks
2125 - Moved to a single unified torrc file for both clients and servers.
2128 Changes in version 0.0.2pre14 - 2003-11-29
2129 o Robustness and bugfixes:
2130 - Force the admin to make the DataDirectory himself
2131 - to get ownership/permissions right
2132 - so clients no longer make a DataDirectory and then never use it
2133 - fix bug where a client who was offline for 45 minutes would never
2134 pull down a directory again
2135 - fix (or at least hide really well) the dns assert bug that was
2136 causing server crashes
2137 - warnings and improved robustness wrt clockskew for certs
2138 - use the native daemon(3) to daemonize, when available
2139 - exit if bind() fails
2140 - exit if neither socksport nor orport is defined
2141 - include our own tor_timegm (Win32 doesn't have its own)
2142 - bugfix for win32 with lots of connections
2143 - fix minor bias in PRNG
2144 - make dirserver more robust to corrupt cached directory
2147 - Wrote the design document (woo)
2149 o Circuit building and exit policies:
2150 - Circuits no longer try to use nodes that the directory has told them
2152 - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
2153 bitcounts (18.0.0.0/8).
2154 - Make AP connections standby for a circuit if no suitable circuit
2155 exists, rather than failing
2156 - Circuits choose exit node based on addr/port, exit policies, and
2157 which AP connections are standing by
2158 - Bump min pathlen from 2 to 3
2159 - Relay end cells have a payload to describe why the stream ended.
2160 - If the stream failed because of exit policy, try again with a new
2162 - Clients have a dns cache to remember resolved addresses.
2163 - Notice more quickly when we have no working circuits
2166 - APPort is now called SocksPort
2167 - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
2169 - RecommendedVersions is now a config variable rather than
2170 hardcoded (for dirservers)
2171 - Reloads config on HUP
2172 - Usage info on -h or --help
2173 - If you set User and Group config vars, it'll setu/gid to them.
2175 Changes in version 0.0.2pre13 - 2003-10-19
2176 o General stability:
2177 - SSL_write no longer fails when it returns WANTWRITE and the number
2178 of bytes in the buf has changed by the next SSL_write call.
2179 - Fix segfault fetching directory when network is down
2180 - Fix a variety of minor memory leaks
2181 - Dirservers reload the fingerprints file on HUP, so I don't have
2182 to take down the network when I approve a new router
2183 - Default server config file has explicit Address line to specify fqdn
2186 - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
2187 - Make listener connections not ever alloc bufs
2189 o Autoconf improvements:
2190 - don't clobber an external CFLAGS in ./configure
2191 - Make install now works
2192 - create var/lib/tor on make install
2193 - autocreate a tor.sh initscript to help distribs
2194 - autocreate the torrc and sample-server-torrc with correct paths
2196 o Log files and Daemonizing now work:
2197 - If --DebugLogFile is specified, log to it at -l debug
2198 - If --LogFile is specified, use it instead of commandline
2199 - If --RunAsDaemon is set, tor forks and backgrounds on startup