ChangeLog 129 KB

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  1. Changes in version 0.1.1.17-rc - 2006-03-28
  2. o Major fixes:
  3. - Clients and servers since 0.1.1.10-alpha have been expiring
  4. connections whenever they are idle for 5 minutes and they *do*
  5. have circuits on them. Oops. With this new version, clients will
  6. discard their previous entry guard choices and avoid choosing
  7. entry guards running these flawed versions.
  8. - Fix memory leak when uncompressing concatenated zlib streams. This
  9. was causing substantial leaks over time on Tor servers.
  10. - The v1 directory was including servers as much as 48 hours old,
  11. because that's how the new routerlist->routers works. Now only
  12. include them if they're 20 hours old or less.
  13. o Minor fixes:
  14. - Resume building on irix64, netbsd 2.0, etc.
  15. - On non-gcc compilers (e.g. solaris), use "-g -O" instead of
  16. "-Wall -g -O2".
  17. - Stop writing the "router.desc" file, ever. Nothing uses it anymore,
  18. and it is confusing some users.
  19. - Mirrors stop caching the v1 directory so often.
  20. - Make the max number of old descriptors that a cache will hold
  21. rise with the number of directory authorities, so we can scale.
  22. - Change our win32 uname() hack to be more forgiving about what
  23. win32 versions it thinks it's found.
  24. o New features:
  25. - Add lefkada.eecs.harvard.edu as a fourth authoritative directory
  26. server.
  27. - When the controller's *setconf commands fail, collect an error
  28. message in a string and hand it back to the controller.
  29. - Make the v2 dir's "Fast" flag based on relative capacity, just
  30. like "Stable" is based on median uptime. Name everything in the
  31. top 7/8 Fast, and only the top 1/2 gets to be a Guard.
  32. - Log server fingerprint on startup, so new server operators don't
  33. have to go hunting around their filesystem for it.
  34. - Return a robots.txt on our dirport to discourage google indexing.
  35. - Let the controller ask for GETINFO dir/status/foo so it can ask
  36. directly rather than connecting to the dir port. Only works when
  37. dirport is set for now.
  38. o New config options rather than constants in the code:
  39. - SocksTimeout: How long do we let a socks connection wait
  40. unattached before we fail it?
  41. - CircuitBuildTimeout: Cull non-open circuits that were born
  42. at least this many seconds ago.
  43. - CircuitIdleTimeout: Cull open clean circuits that were born
  44. at least this many seconds ago.
  45. Changes in version 0.1.1.16-rc - 2006-03-18
  46. o Bugfixes on 0.1.1.15-rc:
  47. - Fix assert when the controller asks to attachstream a connect-wait
  48. or resolve-wait stream.
  49. - Now do address rewriting when the controller asks us to attach
  50. to a particular circuit too. This will let Blossom specify
  51. "moria2.exit" without having to learn what moria2's IP address is.
  52. - Make the "tor --verify-config" command-line work again, so people
  53. can automatically check if their torrc will parse.
  54. - Authoritative dirservers no longer require an open connection from
  55. a server to consider him "reachable". We need this change because
  56. when we add new auth dirservers, old servers won't know not to
  57. hang up on them.
  58. - Let Tor build on Sun CC again.
  59. - Fix an off-by-one buffer size in dirserv.c that magically never
  60. hit our three authorities but broke sjmurdoch's own tor network.
  61. - If we as a directory mirror don't know of any v1 directory
  62. authorities, then don't try to cache any v1 directories.
  63. - Stop warning about unknown servers in our family when they are
  64. given as hex digests.
  65. - Stop complaining as quickly to the server operator that he
  66. hasn't registered his nickname/key binding.
  67. - Various cleanups so we can add new V2 Auth Dirservers.
  68. - Change "AllowUnverifiedNodes" to "AllowInvalidNodes", to
  69. reflect the updated flags in our v2 dir protocol.
  70. - Resume allowing non-printable characters for exit streams (both
  71. for connecting and for resolving). Now we tolerate applications
  72. that don't follow the RFCs. But continue to block malformed names
  73. at the socks side.
  74. o Bugfixes on 0.1.0.x:
  75. - Fix assert bug in close_logs(): when we close and delete logs,
  76. remove them all from the global "logfiles" list.
  77. - Fix minor integer overflow in calculating when we expect to use up
  78. our bandwidth allocation before hibernating.
  79. - Fix a couple of bugs in OpenSSL detection. Also, deal better when
  80. there are multiple SSLs installed with different versions.
  81. - When we try to be a server and Address is not explicitly set and
  82. our hostname resolves to a private IP address, try to use an
  83. interface address if it has a public address. Now Windows machines
  84. that think of themselves as localhost can work by default.
  85. o New features:
  86. - Let the controller ask for GETINFO dir/server/foo so it can ask
  87. directly rather than connecting to the dir port.
  88. - Let the controller tell us about certain router descriptors
  89. that it doesn't want Tor to use in circuits. Implement
  90. SETROUTERPURPOSE and modify +POSTDESCRIPTOR to do this.
  91. - New config option SafeSocks to reject all application connections
  92. using unsafe socks protocols. Defaults to off.
  93. Changes in version 0.1.1.15-rc - 2006-03-11
  94. o Bugfixes and cleanups:
  95. - When we're printing strings from the network, don't try to print
  96. non-printable characters. This protects us against shell escape
  97. sequence exploits, and also against attacks to fool humans into
  98. misreading their logs.
  99. - Fix a bug where Tor would fail to establish any connections if you
  100. left it off for 24 hours and then started it: we were happy with
  101. the obsolete network statuses, but they all referred to router
  102. descriptors that were too old to fetch, so we ended up with no
  103. valid router descriptors.
  104. - Fix a seg fault in the controller's "getinfo orconn-status" command
  105. while listing status on incoming handshaking connections. Introduce
  106. a status name "NEW" for these connections.
  107. - If we get a linelist or linelist_s config option from the torrc
  108. (e.g. ExitPolicy) and it has no value, warn and skip rather than
  109. silently resetting it to its default.
  110. - Don't abandon entry guards until they've been down or gone for
  111. a whole month.
  112. - Cleaner and quieter log messages.
  113. o New features:
  114. - New controller signal NEWNYM that makes new application requests
  115. use clean circuits.
  116. - Add a new circuit purpose 'controller' to let the controller ask
  117. for a circuit that Tor won't try to use. Extend the EXTENDCIRCUIT
  118. controller command to let you specify the purpose if you're starting
  119. a new circuit. Add a new SETCIRCUITPURPOSE controller command to
  120. let you change a circuit's purpose after it's been created.
  121. - Accept "private:*" in routerdesc exit policies; not generated yet
  122. because older Tors do not understand it.
  123. - Add BSD-style contributed startup script "rc.subr" from Peter
  124. Thoenen.
  125. Changes in version 0.1.1.14-alpha - 2006-02-20
  126. o Bugfixes on 0.1.1.x:
  127. - Don't die if we ask for a stdout or stderr log (even implicitly)
  128. and we're set to RunAsDaemon -- just warn.
  129. - We still had a few bugs in the OR connection rotation code that
  130. caused directory servers to slowly aggregate connections to other
  131. fast Tor servers. This time for sure!
  132. - Make log entries on Win32 include the name of the function again.
  133. - We were treating a pair of exit policies if they were equal even
  134. if one said accept and the other said reject -- causing us to
  135. not always publish a new descriptor since we thought nothing
  136. had changed.
  137. - Retry pending server downloads as well as pending networkstatus
  138. downloads when we unexpectedly get a socks request.
  139. - We were ignoring the IS_FAST flag in the directory status,
  140. meaning we were willing to pick trivial-bandwidth nodes for "fast"
  141. connections.
  142. - If the controller's SAVECONF command fails (e.g. due to file
  143. permissions), let the controller know that it failed.
  144. o Features:
  145. - If we're trying to be a Tor server and running Windows 95/98/ME
  146. as a server, explain that we'll likely crash.
  147. - When we're a server, a client asks for an old-style directory,
  148. and our write bucket is empty, don't give it to him. This way
  149. small servers can continue to serve the directory *sometimes*,
  150. without getting overloaded.
  151. - Compress exit policies even more -- look for duplicate lines
  152. and remove them.
  153. - Clients now honor the "guard" flag in the router status when
  154. picking entry guards, rather than looking at is_fast or is_stable.
  155. - Retain unrecognized lines in $DATADIR/state file, so that we can
  156. be forward-compatible.
  157. - Generate 18.0.0.0/8 address policy format in descs when we can;
  158. warn when the mask is not reducible to a bit-prefix.
  159. - Let the user set ControlListenAddress in the torrc. This can be
  160. dangerous, but there are some cases (like a secured LAN) where it
  161. makes sense.
  162. - Split ReachableAddresses into ReachableDirAddresses and
  163. ReachableORAddresses, so we can restrict Dir conns to port 80
  164. and OR conns to port 443.
  165. - Now we can target arch and OS in rpm builds (contributed by
  166. Phobos). Also make the resulting dist-rpm filename match the
  167. target arch.
  168. - New config options to help controllers: FetchServerDescriptors
  169. and FetchHidServDescriptors for whether to fetch server
  170. info and hidserv info or let the controller do it, and
  171. PublishServerDescriptor and PublishHidServDescriptors.
  172. - Also let the controller set the __AllDirActionsPrivate config
  173. option if you want all directory fetches/publishes to happen via
  174. Tor (it assumes your controller bootstraps your circuits).
  175. Changes in version 0.1.1.13-alpha - 2006-02-09
  176. o Crashes in 0.1.1.x:
  177. - When you tried to setconf ORPort via the controller, Tor would
  178. crash. So people using TorCP to become a server were sad.
  179. - Solve (I hope) the stack-smashing bug that we were seeing on fast
  180. servers. The problem appears to be something do with OpenSSL's
  181. random number generation, or how we call it, or something. Let me
  182. know if the crashes continue.
  183. - Turn crypto hardware acceleration off by default, until we find
  184. somebody smart who can test it for us. (It appears to produce
  185. seg faults in at least some cases.)
  186. - Fix a rare assert error when we've tried all intro points for
  187. a hidden service and we try fetching the service descriptor again:
  188. "Assertion conn->state != AP_CONN_STATE_RENDDESC_WAIT failed"
  189. o Major fixes:
  190. - Fix a major load balance bug: we were round-robining in 16 KB
  191. chunks, and servers with bandwidthrate of 20 KB, while downloading
  192. a 600 KB directory, would starve their other connections. Now we
  193. try to be a bit more fair.
  194. - Dir authorities and mirrors were never expiring the newest
  195. descriptor for each server, causing memory and directory bloat.
  196. - Fix memory-bloating and connection-bloating bug on servers: We
  197. were never closing any connection that had ever had a circuit on
  198. it, because we were checking conn->n_circuits == 0, yet we had a
  199. bug that let it go negative.
  200. - Make Tor work using squid as your http proxy again -- squid
  201. returns an error if you ask for a URL that's too long, and it uses
  202. a really generic error message. Plus, many people are behind a
  203. transparent squid so they don't even realize it.
  204. - On platforms that don't have getrlimit (like Windows), we were
  205. artificially constraining ourselves to a max of 1024
  206. connections. Now just assume that we can handle as many as 15000
  207. connections. Hopefully this won't cause other problems.
  208. - Add a new config option ExitPolicyRejectPrivate which defaults to
  209. 1. This means all exit policies will begin with rejecting private
  210. addresses, unless the server operator explicitly turns it off.
  211. o Major features:
  212. - Clients no longer download descriptors for non-running descriptors.
  213. - Before we add new directory authorities, we should make it
  214. clear that only v1 authorities should receive/publish hidden
  215. service descriptors.
  216. o Minor features:
  217. - As soon as we've fetched some more directory info, immediately
  218. try to download more server descriptors. This way we don't have
  219. a 10 second pause during initial bootstrapping.
  220. - Remove even more loud log messages that the server operator can't
  221. do anything about.
  222. - When we're running an obsolete or un-recommended version, make
  223. the log message more clear about what the problem is and what
  224. versions *are* still recommended.
  225. - Provide a more useful warn message when our onion queue gets full:
  226. the CPU is too slow or the exit policy is too liberal.
  227. - Don't warn when we receive a 503 from a dirserver/cache -- this
  228. will pave the way for them being able to refuse if they're busy.
  229. - When we fail to bind a listener, try to provide a more useful
  230. log message: e.g., "Is Tor already running?"
  231. - Adjust tor-spec to parameterize cell and key lengths. Now Ian
  232. Goldberg can prove things about our handshake protocol more
  233. easily.
  234. - MaxConn has been obsolete for a while now. Document the ConnLimit
  235. config option, which is a *minimum* number of file descriptors
  236. that must be available else Tor refuses to start.
  237. - Apply Matt Ghali's --with-syslog-facility patch to ./configure
  238. if you log to syslog and want something other than LOG_DAEMON.
  239. - Make dirservers generate a separate "guard" flag to mean,
  240. "would make a good entry guard". Make clients parse it and vote
  241. on it. Not used by clients yet.
  242. - Implement --with-libevent-dir option to ./configure. Also, improve
  243. search techniques to find libevent, and use those for openssl too.
  244. - Bump the default bandwidthrate to 3 MB, and burst to 6 MB
  245. - Only start testing reachability once we've established a
  246. circuit. This will make startup on dirservers less noisy.
  247. - Don't try to upload hidden service descriptors until we have
  248. established a circuit.
  249. - Fix the controller's "attachstream 0" command to treat conn like
  250. it just connected, doing address remapping, handling .exit and
  251. .onion idioms, and so on. Now we're more uniform in making sure
  252. that the controller hears about new and closing connections.
  253. Changes in version 0.1.1.12-alpha - 2006-01-11
  254. o Bugfixes on 0.1.1.x:
  255. - The fix to close duplicate server connections was closing all
  256. Tor client connections if they didn't establish a circuit
  257. quickly enough. Oops.
  258. - Fix minor memory issue (double-free) that happened on exit.
  259. o Bugfixes on 0.1.0.x:
  260. - Tor didn't warn when it failed to open a log file.
  261. Changes in version 0.1.1.11-alpha - 2006-01-10
  262. o Crashes in 0.1.1.x:
  263. - Include all the assert/crash fixes from 0.1.0.16.
  264. - If you start Tor and then quit very quickly, there were some
  265. races that tried to free things that weren't allocated yet.
  266. - Fix a rare memory stomp if you're running hidden services.
  267. - Fix segfault when specifying DirServer in config without nickname.
  268. - Fix a seg fault when you finish connecting to a server but at
  269. that moment you dump his server descriptor.
  270. - Extendcircuit and Attachstream controller commands would
  271. assert/crash if you don't give them enough arguments.
  272. - Fix an assert error when we're out of space in the connection_list
  273. and we try to post a hidden service descriptor (reported by weasel).
  274. - If you specify a relative torrc path and you set RunAsDaemon in
  275. your torrc, then it chdir()'s to the new directory. If you HUP,
  276. it tries to load the new torrc location, fails, and exits.
  277. The fix: no longer allow a relative path to torrc using -f.
  278. o Major features:
  279. - Implement "entry guards": automatically choose a handful of entry
  280. nodes and stick with them for all circuits. Only pick new guards
  281. when the ones you have are unsuitable, and if the old guards
  282. become suitable again, switch back. This will increase security
  283. dramatically against certain end-point attacks. The EntryNodes
  284. config option now provides some hints about which entry guards you
  285. want to use most; and StrictEntryNodes means to only use those.
  286. (CVE-2006-0414)
  287. - New directory logic: download by descriptor digest, not by
  288. fingerprint. Caches try to download all listed digests from
  289. authorities; clients try to download "best" digests from caches.
  290. This avoids partitioning and isolating attacks better.
  291. - Make the "stable" router flag in network-status be the median of
  292. the uptimes of running valid servers, and make clients pay
  293. attention to the network-status flags. Thus the cutoff adapts
  294. to the stability of the network as a whole, making IRC, IM, etc
  295. connections more reliable.
  296. o Major fixes:
  297. - Tor servers with dynamic IP addresses were needing to wait 18
  298. hours before they could start doing reachability testing using
  299. the new IP address and ports. This is because they were using
  300. the internal descriptor to learn what to test, yet they were only
  301. rebuilding the descriptor once they decided they were reachable.
  302. - Tor 0.1.1.9 and 0.1.1.10 had a serious bug that caused clients
  303. to download certain server descriptors, throw them away, and then
  304. fetch them again after 30 minutes. Now mirrors throw away these
  305. server descriptors so clients can't get them.
  306. - We were leaving duplicate connections to other ORs open for a week,
  307. rather than closing them once we detect a duplicate. This only
  308. really affected authdirservers, but it affected them a lot.
  309. - Spread the authdirservers' reachability testing over the entire
  310. testing interval, so we don't try to do 500 TLS's at once every
  311. 20 minutes.
  312. o Minor fixes:
  313. - If the network is down, and we try to connect to a conn because
  314. we have a circuit in mind, and we timeout (30 seconds) because the
  315. network never answers, we were expiring the circuit, but we weren't
  316. obsoleting the connection or telling the entry_guards functions.
  317. - Some Tor servers process billions of cells per day. These statistics
  318. need to be uint64_t's.
  319. - Check for integer overflows in more places, when adding elements
  320. to smartlists. This could possibly prevent a buffer overflow
  321. on malicious huge inputs. I don't see any, but I haven't looked
  322. carefully.
  323. - ReachableAddresses kept growing new "reject *:*" lines on every
  324. setconf/reload.
  325. - When you "setconf log" via the controller, it should remove all
  326. logs. We were automatically adding back in a "log notice stdout".
  327. - Newly bootstrapped Tor networks couldn't establish hidden service
  328. circuits until they had nodes with high uptime. Be more tolerant.
  329. - We were marking servers down when they could not answer every piece
  330. of the directory request we sent them. This was far too harsh.
  331. - Fix the torify (tsocks) config file to not use Tor for localhost
  332. connections.
  333. - Directory authorities now go to the proper authority when asking for
  334. a networkstatus, even when they want a compressed one.
  335. - Fix a harmless bug that was causing Tor servers to log
  336. "Got an end because of misc error, but we're not an AP. Closing."
  337. - Authorities were treating their own descriptor changes as cosmetic,
  338. meaning the descriptor available in the network-status and the
  339. descriptor that clients downloaded were different.
  340. - The OS X installer was adding a symlink for tor_resolve but
  341. the binary was called tor-resolve (reported by Thomas Hardly).
  342. - Workaround a problem with some http proxies where they refuse GET
  343. requests that specify "Content-Length: 0" (reported by Adrian).
  344. - Fix wrong log message when you add a "HiddenServiceNodes" config
  345. line without any HiddenServiceDir line (reported by Chris Thomas).
  346. o Minor features:
  347. - Write the TorVersion into the state file so we have a prayer of
  348. keeping forward and backward compatibility.
  349. - Revive the FascistFirewall config option rather than eliminating it:
  350. now it's a synonym for ReachableAddresses *:80,*:443.
  351. - Clients choose directory servers from the network status lists,
  352. not from their internal list of router descriptors. Now they can
  353. go to caches directly rather than needing to go to authorities
  354. to bootstrap.
  355. - Directory authorities ignore router descriptors that have only
  356. cosmetic differences: do this for 0.1.0.x servers now too.
  357. - Add a new flag to network-status indicating whether the server
  358. can answer v2 directory requests too.
  359. - Authdirs now stop whining so loudly about bad descriptors that
  360. they fetch from other dirservers. So when there's a log complaint,
  361. it's for sure from a freshly uploaded descriptor.
  362. - Reduce memory requirements in our structs by changing the order
  363. of fields.
  364. - There used to be two ways to specify your listening ports in a
  365. server descriptor: on the "router" line and with a separate "ports"
  366. line. Remove support for the "ports" line.
  367. - New config option "AuthDirRejectUnlisted" for auth dirservers as
  368. a panic button: if we get flooded with unusable servers we can
  369. revert to only listing servers in the approved-routers file.
  370. - Auth dir servers can now mark a fingerprint as "!reject" or
  371. "!invalid" in the approved-routers file (as its nickname), to
  372. refuse descriptors outright or include them but marked as invalid.
  373. - Servers store bandwidth history across restarts/crashes.
  374. - Add reasons to DESTROY and RELAY_TRUNCATED cells, so clients can
  375. get a better idea of why their circuits failed. Not used yet.
  376. - Directory mirrors now cache up to 16 unrecognized network-status
  377. docs. Now we can add new authdirservers and they'll be cached too.
  378. - When picking a random directory, prefer non-authorities if any
  379. are known.
  380. - New controller option "getinfo desc/all-recent" to fetch the
  381. latest server descriptor for every router that Tor knows about.
  382. Changes in version 0.1.1.10-alpha - 2005-12-11
  383. o Correctness bugfixes on 0.1.0.x:
  384. - On Windows, build with a libevent patch from "I-M Weasel" to avoid
  385. corrupting the heap, losing FDs, or crashing when we need to resize
  386. the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
  387. - Stop doing the complex voodoo overkill checking for insecure
  388. Diffie-Hellman keys. Just check if it's in [2,p-2] and be happy.
  389. - When we were closing connections, there was a rare case that
  390. stomped on memory, triggering seg faults and asserts.
  391. - We were neglecting to unlink marked circuits from soon-to-close OR
  392. connections, which caused some rare scribbling on freed memory.
  393. - When we're deciding whether a stream has enough circuits around
  394. that can handle it, count the freshly dirty ones and not the ones
  395. that are so dirty they won't be able to handle it.
  396. - Recover better from TCP connections to Tor servers that are
  397. broken but don't tell you (it happens!); and rotate TLS
  398. connections once a week.
  399. - When we're expiring old circuits, we had a logic error that caused
  400. us to close new rendezvous circuits rather than old ones.
  401. - Fix a scary-looking but apparently harmless bug where circuits
  402. would sometimes start out in state CIRCUIT_STATE_OR_WAIT at
  403. servers, and never switch to state CIRCUIT_STATE_OPEN.
  404. - When building with -static or on Solaris, we sometimes needed to
  405. build with -ldl.
  406. - Give a useful message when people run Tor as the wrong user,
  407. rather than telling them to start chowning random directories.
  408. - We were failing to inform the controller about new .onion streams.
  409. o Security bugfixes on 0.1.0.x:
  410. - Refuse server descriptors if the fingerprint line doesn't match
  411. the included identity key. Tor doesn't care, but other apps (and
  412. humans) might actually be trusting the fingerprint line.
  413. - We used to kill the circuit when we receive a relay command we
  414. don't recognize. Now we just drop it.
  415. - Start obeying our firewall options more rigorously:
  416. . If we can't get to a dirserver directly, try going via Tor.
  417. . Don't ever try to connect (as a client) to a place our
  418. firewall options forbid.
  419. . If we specify a proxy and also firewall options, obey the
  420. firewall options even when we're using the proxy: some proxies
  421. can only proxy to certain destinations.
  422. - Fix a bug found by Lasse Overlier: when we were making internal
  423. circuits (intended to be cannibalized later for rendezvous and
  424. introduction circuits), we were picking them so that they had
  425. useful exit nodes. There was no need for this, and it actually
  426. aids some statistical attacks.
  427. - Start treating internal circuits and exit circuits separately.
  428. It's important to keep them separate because internal circuits
  429. have their last hops picked like middle hops, rather than like
  430. exit hops. So exiting on them will break the user's expectations.
  431. o Bugfixes on 0.1.1.x:
  432. - Take out the mis-feature where we tried to detect IP address
  433. flapping for people with DynDNS, and chose not to upload a new
  434. server descriptor sometimes.
  435. - Try to be compatible with OpenSSL 0.9.6 again.
  436. - Log fix: when the controller is logging about .onion addresses,
  437. sometimes it didn't include the ".onion" part of the address.
  438. - Don't try to modify options->DirServers internally -- if the
  439. user didn't specify any, just add the default ones directly to
  440. the trusted dirserver list. This fixes a bug where people running
  441. controllers would use SETCONF on some totally unrelated config
  442. option, and Tor would start yelling at them about changing their
  443. DirServer lines.
  444. - Let the controller's redirectstream command specify a port, in
  445. case the controller wants to change that too.
  446. - When we requested a pile of server descriptors, we sometimes
  447. accidentally launched a duplicate request for the first one.
  448. - Bugfix for trackhostexits: write down the fingerprint of the
  449. chosen exit, not its nickname, because the chosen exit might not
  450. be verified.
  451. - When parsing foo.exit, if foo is unknown, and we are leaving
  452. circuits unattached, set the chosen_exit field and leave the
  453. address empty. This matters because controllers got confused
  454. otherwise.
  455. - Directory authorities no longer try to download server
  456. descriptors that they know they will reject.
  457. o Features and updates:
  458. - Replace balanced trees with hash tables: this should make stuff
  459. significantly faster.
  460. - Resume using the AES counter-mode implementation that we ship,
  461. rather than OpenSSL's. Ours is significantly faster.
  462. - Many other CPU and memory improvements.
  463. - Add a new config option FastFirstHopPK (on by default) so clients
  464. do a trivial crypto handshake for their first hop, since TLS has
  465. already taken care of confidentiality and authentication.
  466. - Add a new config option TestSocks so people can see if their
  467. applications are using socks4, socks4a, socks5-with-ip, or
  468. socks5-with-hostname. This way they don't have to keep mucking
  469. with tcpdump and wondering if something got cached somewhere.
  470. - Warn when listening on a public address for socks. I suspect a
  471. lot of people are setting themselves up as open socks proxies,
  472. and they have no idea that jerks on the Internet are using them,
  473. since they simply proxy the traffic into the Tor network.
  474. - Add "private:*" as an alias in configuration for policies. Now
  475. you can simplify your exit policy rather than needing to list
  476. every single internal or nonroutable network space.
  477. - Add a new controller event type that allows controllers to get
  478. all server descriptors that were uploaded to a router in its role
  479. as authoritative dirserver.
  480. - Start shipping socks-extensions.txt, tor-doc-unix.html,
  481. tor-doc-server.html, and stylesheet.css in the tarball.
  482. - Stop shipping tor-doc.html in the tarball.
  483. Changes in version 0.1.1.9-alpha - 2005-11-15
  484. o Usability improvements:
  485. - Start calling it FooListenAddress rather than FooBindAddress,
  486. since few of our users know what it means to bind an address
  487. or port.
  488. - Reduce clutter in server logs. We're going to try to make
  489. them actually usable now. New config option ProtocolWarnings that
  490. lets you hear about how _other Tors_ are breaking the protocol. Off
  491. by default.
  492. - Divide log messages into logging domains. Once we put some sort
  493. of interface on this, it will let people looking at more verbose
  494. log levels specify the topics they want to hear more about.
  495. - Make directory servers return better http 404 error messages
  496. instead of a generic "Servers unavailable".
  497. - Check for even more Windows version flags when writing the platform
  498. string in server descriptors, and note any we don't recognize.
  499. - Clean up more of the OpenSSL memory when exiting, so we can detect
  500. memory leaks better.
  501. - Make directory authorities be non-versioning, non-naming by
  502. default. Now we can add new directory servers without requiring
  503. their operators to pay close attention.
  504. - When logging via syslog, include the pid whenever we provide
  505. a log entry. Suggested by Todd Fries.
  506. o Performance improvements:
  507. - Directory servers now silently throw away new descriptors that
  508. haven't changed much if the timestamps are similar. We do this to
  509. tolerate older Tor servers that upload a new descriptor every 15
  510. minutes. (It seemed like a good idea at the time.)
  511. - Inline bottleneck smartlist functions; use fast versions by default.
  512. - Add a "Map from digest to void*" abstraction digestmap_t so we
  513. can do less hex encoding/decoding. Use it in router_get_by_digest()
  514. to resolve a performance bottleneck.
  515. - Allow tor_gzip_uncompress to extract as much as possible from
  516. truncated compressed data. Try to extract as many
  517. descriptors as possible from truncated http responses (when
  518. DIR_PURPOSE_FETCH_ROUTERDESC).
  519. - Make circ->onionskin a pointer, not a static array. moria2 was using
  520. 125000 circuit_t's after it had been up for a few weeks, which
  521. translates to 20+ megs of wasted space.
  522. - The private half of our EDH handshake keys are now chosen out
  523. of 320 bits, not 1024 bits. (Suggested by Ian Goldberg.)
  524. o Security improvements:
  525. - Start making directory caches retain old routerinfos, so soon
  526. clients can start asking by digest of descriptor rather than by
  527. fingerprint of server.
  528. - Add half our entropy from RAND_poll in OpenSSL. This knows how
  529. to use egd (if present), openbsd weirdness (if present), vms/os2
  530. weirdness (if we ever port there), and more in the future.
  531. o Bugfixes on 0.1.0.x:
  532. - Do round-robin writes of at most 16 kB per write. This might be
  533. more fair on loaded Tor servers, and it might resolve our Windows
  534. crash bug. It might also slow things down.
  535. - Our TLS handshakes were generating a single public/private
  536. keypair for the TLS context, rather than making a new one for
  537. each new connections. Oops. (But we were still rotating them
  538. periodically, so it's not so bad.)
  539. - When we were cannibalizing a circuit with a particular exit
  540. node in mind, we weren't checking to see if that exit node was
  541. already present earlier in the circuit. Oops.
  542. - When a Tor server's IP changes (e.g. from a dyndns address),
  543. upload a new descriptor so clients will learn too.
  544. - Really busy servers were keeping enough circuits open on stable
  545. connections that they were wrapping around the circuit_id
  546. space. (It's only two bytes.) This exposed a bug where we would
  547. feel free to reuse a circuit_id even if it still exists but has
  548. been marked for close. Try to fix this bug. Some bug remains.
  549. - If we would close a stream early (e.g. it asks for a .exit that
  550. we know would refuse it) but the LeaveStreamsUnattached config
  551. option is set by the controller, then don't close it.
  552. o Bugfixes on 0.1.1.8-alpha:
  553. - Fix a big pile of memory leaks, some of them serious.
  554. - Do not try to download a routerdesc if we would immediately reject
  555. it as obsolete.
  556. - Resume inserting a newline between all router descriptors when
  557. generating (old style) signed directories, since our spec says
  558. we do.
  559. - When providing content-type application/octet-stream for
  560. server descriptors using .z, we were leaving out the
  561. content-encoding header. Oops. (Everything tolerated this just
  562. fine, but that doesn't mean we need to be part of the problem.)
  563. - Fix a potential seg fault in getconf and getinfo using version 1
  564. of the controller protocol.
  565. - Avoid crash: do not check whether DirPort is reachable when we
  566. are suppressing it because of hibernation.
  567. - Make --hash-password not crash on exit.
  568. Changes in version 0.1.1.8-alpha - 2005-10-07
  569. o New features (major):
  570. - Clients don't download or use the directory anymore. Now they
  571. download and use network-statuses from the trusted dirservers,
  572. and fetch individual server descriptors as needed from mirrors.
  573. See dir-spec.txt for all the gory details.
  574. - Be more conservative about whether to advertise our DirPort.
  575. The main change is to not advertise if we're running at capacity
  576. and either a) we could hibernate or b) our capacity is low and
  577. we're using a default DirPort.
  578. - Use OpenSSL's AES when OpenSSL has version 0.9.7 or later.
  579. o New features (minor):
  580. - Try to be smart about when to retry network-status and
  581. server-descriptor fetches. Still needs some tuning.
  582. - Stop parsing, storing, or using running-routers output (but
  583. mirrors still cache and serve it).
  584. - Consider a threshold of versioning dirservers (dirservers who have
  585. an opinion about which Tor versions are still recommended) before
  586. deciding whether to warn the user that he's obsolete.
  587. - Dirservers can now reject/invalidate by key and IP, with the
  588. config options "AuthDirInvalid" and "AuthDirReject". This is
  589. useful since currently we automatically list servers as running
  590. and usable even if we know they're jerks.
  591. - Provide dire warnings to any users who set DirServer; move it out
  592. of torrc.sample and into torrc.complete.
  593. - Add MyFamily to torrc.sample in the server section.
  594. - Add nicknames to the DirServer line, so we can refer to them
  595. without requiring all our users to memorize their IP addresses.
  596. - When we get an EOF or a timeout on a directory connection, note
  597. how many bytes of serverdesc we are dropping. This will help
  598. us determine whether it is smart to parse incomplete serverdesc
  599. responses.
  600. - Add a new function to "change pseudonyms" -- that is, to stop
  601. using any currently-dirty circuits for new streams, so we don't
  602. link new actions to old actions. Currently it's only called on
  603. HUP (or SIGNAL RELOAD).
  604. - On sighup, if UseHelperNodes changed to 1, use new circuits.
  605. - Start using RAND_bytes rather than RAND_pseudo_bytes from
  606. OpenSSL. Also, reseed our entropy every hour, not just at
  607. startup. And entropy in 512-bit chunks, not 160-bit chunks.
  608. o Fixes on 0.1.1.7-alpha:
  609. - Nobody ever implemented EVENT_ADDRMAP for control protocol
  610. version 0, so don't let version 0 controllers ask for it.
  611. - If you requested something with too many newlines via the
  612. v1 controller protocol, you could crash tor.
  613. - Fix a number of memory leaks, including some pretty serious ones.
  614. - Re-enable DirPort testing again, so Tor servers will be willing
  615. to advertise their DirPort if it's reachable.
  616. - On TLS handshake, only check the other router's nickname against
  617. its expected nickname if is_named is set.
  618. o Fixes forward-ported from 0.1.0.15:
  619. - Don't crash when we don't have any spare file descriptors and we
  620. try to spawn a dns or cpu worker.
  621. - Make the numbers in read-history and write-history into uint64s,
  622. so they don't overflow and publish negatives in the descriptor.
  623. o Fixes on 0.1.0.x:
  624. - For the OS X package's modified privoxy config file, comment
  625. out the "logfile" line so we don't log everything passed
  626. through privoxy.
  627. - We were whining about using socks4 or socks5-with-local-lookup
  628. even when it's an IP in the "virtual" range we designed exactly
  629. for this case.
  630. - We were leaking some memory every time the client changes IPs.
  631. - Never call free() on tor_malloc()d memory. This will help us
  632. use dmalloc to detect memory leaks.
  633. - Check for named servers when looking them up by nickname;
  634. warn when we'recalling a non-named server by its nickname;
  635. don't warn twice about the same name.
  636. - Try to list MyFamily elements by key, not by nickname, and warn
  637. if we've not heard of the server.
  638. - Make windows platform detection (uname equivalent) smarter.
  639. - It turns out sparc64 doesn't like unaligned access either.
  640. Changes in version 0.1.1.7-alpha - 2005-09-14
  641. o Fixes on 0.1.1.6-alpha:
  642. - Exit servers were crashing when people asked them to make a
  643. connection to an address not in their exit policy.
  644. - Looking up a non-existent stream for a v1 control connection would
  645. cause a segfault.
  646. - Fix a seg fault if we ask a dirserver for a descriptor by
  647. fingerprint but he doesn't know about him.
  648. - SETCONF was appending items to linelists, not clearing them.
  649. - SETCONF SocksBindAddress killed Tor if it fails to bind. Now back
  650. out and refuse the setconf if it would fail.
  651. - Downgrade the dirserver log messages when whining about
  652. unreachability.
  653. o New features:
  654. - Add Peter Palfrader's check-tor script to tor/contrib/
  655. It lets you easily check whether a given server (referenced by
  656. nickname) is reachable by you.
  657. - Numerous changes to move towards client-side v2 directories. Not
  658. enabled yet.
  659. o Fixes on 0.1.0.x:
  660. - If the user gave tor an odd number of command-line arguments,
  661. we were silently ignoring the last one. Now we complain and fail.
  662. [This wins the oldest-bug prize -- this bug has been present since
  663. November 2002, as released in Tor 0.0.0.]
  664. - Do not use unaligned memory access on alpha, mips, or mipsel.
  665. It *works*, but is very slow, so we treat them as if it doesn't.
  666. - Retry directory requests if we fail to get an answer we like
  667. from a given dirserver (we were retrying before, but only if
  668. we fail to connect).
  669. - When writing the RecommendedVersions line, sort them first.
  670. - When the client asked for a rendezvous port that the hidden
  671. service didn't want to provide, we were sending an IP address
  672. back along with the end cell. Fortunately, it was zero. But stop
  673. that anyway.
  674. - Correct "your server is reachable" log entries to indicate that
  675. it was self-testing that told us so.
  676. Changes in version 0.1.1.6-alpha - 2005-09-09
  677. o Fixes on 0.1.1.5-alpha:
  678. - We broke fascistfirewall in 0.1.1.5-alpha. Oops.
  679. - Fix segfault in unit tests in 0.1.1.5-alpha. Oops.
  680. - Fix bug with tor_memmem finding a match at the end of the string.
  681. - Make unit tests run without segfaulting.
  682. - Resolve some solaris x86 compile warnings.
  683. - Handle duplicate lines in approved-routers files without warning.
  684. - Fix bug where as soon as a server refused any requests due to his
  685. exit policy (e.g. when we ask for localhost and he tells us that's
  686. 127.0.0.1 and he won't do it), we decided he wasn't obeying his
  687. exit policy and stopped using him for any exits.
  688. - Only do openssl hardware accelerator stuff if openssl version is
  689. at least 0.9.7.
  690. o New controller features/fixes:
  691. - Add a "RESETCONF" command so you can set config options like
  692. AllowUnverifiedNodes and LongLivedPorts to "". Also, if you give
  693. a config option in the torrc with no value, then it clears it
  694. entirely (rather than setting it to its default).
  695. - Add a "GETINFO config-file" to tell us where torrc is.
  696. - Avoid sending blank lines when GETINFO replies should be empty.
  697. - Add a QUIT command for the controller (for using it manually).
  698. - Fix a bug in SAVECONF that was adding default dirservers and
  699. other redundant entries to the torrc file.
  700. o Start on the new directory design:
  701. - Generate, publish, cache, serve new network-status format.
  702. - Publish individual descriptors (by fingerprint, by "all", and by
  703. "tell me yours").
  704. - Publish client and server recommended versions separately.
  705. - Allow tor_gzip_uncompress() to handle multiple concatenated
  706. compressed strings. Serve compressed groups of router
  707. descriptors. The compression logic here could be more
  708. memory-efficient.
  709. - Distinguish v1 authorities (all currently trusted directories)
  710. from v2 authorities (all trusted directories).
  711. - Change DirServers config line to note which dirs are v1 authorities.
  712. - Add configuration option "V1AuthoritativeDirectory 1" which
  713. moria1, moria2, and tor26 should set.
  714. - Remove option when getting directory cache to see whether they
  715. support running-routers; they all do now. Replace it with one
  716. to see whether caches support v2 stuff.
  717. o New features:
  718. - Dirservers now do their own external reachability testing of each
  719. Tor server, and only list them as running if they've been found to
  720. be reachable. We also send back warnings to the server's logs if
  721. it uploads a descriptor that we already believe is unreachable.
  722. - Implement exit enclaves: if we know an IP address for the
  723. destination, and there's a running Tor server at that address
  724. which allows exit to the destination, then extend the circuit to
  725. that exit first. This provides end-to-end encryption and end-to-end
  726. authentication. Also, if the user wants a .exit address or enclave,
  727. use 4 hops rather than 3, and cannibalize a general circ for it
  728. if you can.
  729. - Permit transitioning from ORPort=0 to ORPort!=0, and back, from the
  730. controller. Also, rotate dns and cpu workers if the controller
  731. changes options that will affect them; and initialize the dns
  732. worker cache tree whether or not we start out as a server.
  733. - Only upload a new server descriptor when options change, 18
  734. hours have passed, uptime is reset, or bandwidth changes a lot.
  735. - Check [X-]Forwarded-For headers in HTTP requests when generating
  736. log messages. This lets people run dirservers (and caches) behind
  737. Apache but still know which IP addresses are causing warnings.
  738. o Config option changes:
  739. - Replace (Fascist)Firewall* config options with a new
  740. ReachableAddresses option that understands address policies.
  741. For example, "ReachableAddresses *:80,*:443"
  742. - Get rid of IgnoreVersion undocumented config option, and make us
  743. only warn, never exit, when we're running an obsolete version.
  744. - Make MonthlyAccountingStart config option truly obsolete now.
  745. o Fixes on 0.1.0.x:
  746. - Reject ports 465 and 587 in the default exit policy, since
  747. people have started using them for spam too.
  748. - It turns out we couldn't bootstrap a network since we added
  749. reachability detection in 0.1.0.1-rc. Good thing the Tor network
  750. has never gone down. Add an AssumeReachable config option to let
  751. servers and dirservers bootstrap. When we're trying to build a
  752. high-uptime or high-bandwidth circuit but there aren't enough
  753. suitable servers, try being less picky rather than simply failing.
  754. - Our logic to decide if the OR we connected to was the right guy
  755. was brittle and maybe open to a mitm for unverified routers.
  756. - We weren't cannibalizing circuits correctly for
  757. CIRCUIT_PURPOSE_C_ESTABLISH_REND and
  758. CIRCUIT_PURPOSE_S_ESTABLISH_INTRO, so we were being forced to
  759. build those from scratch. This should make hidden services faster.
  760. - Predict required circuits better, with an eye toward making hidden
  761. services faster on the service end.
  762. - Retry streams if the exit node sends back a 'misc' failure. This
  763. should result in fewer random failures. Also, after failing
  764. from resolve failed or misc, reset the num failures, so we give
  765. it a fair shake next time we try.
  766. - Clean up the rendezvous warn log msgs, and downgrade some to info.
  767. - Reduce severity on logs about dns worker spawning and culling.
  768. - When we're shutting down and we do something like try to post a
  769. server descriptor or rendezvous descriptor, don't complain that
  770. we seem to be unreachable. Of course we are, we're shutting down.
  771. - Add TTLs to RESOLVED, CONNECTED, and END_REASON_EXITPOLICY cells.
  772. We don't use them yet, but maybe one day our DNS resolver will be
  773. able to discover them.
  774. - Make ContactInfo mandatory for authoritative directory servers.
  775. - Require server descriptors to list IPv4 addresses -- hostnames
  776. are no longer allowed. This also fixes some potential security
  777. problems with people providing hostnames as their address and then
  778. preferentially resolving them to partition users.
  779. - Change log line for unreachability to explicitly suggest /etc/hosts
  780. as the culprit. Also make it clearer what IP address and ports we're
  781. testing for reachability.
  782. - Put quotes around user-supplied strings when logging so users are
  783. more likely to realize if they add bad characters (like quotes)
  784. to the torrc.
  785. - Let auth dir servers start without specifying an Address config
  786. option.
  787. - Make unit tests (and other invocations that aren't the real Tor)
  788. run without launching listeners, creating subdirectories, and so on.
  789. Changes in version 0.1.1.5-alpha - 2005-08-08
  790. o Bugfixes included in 0.1.0.14.
  791. o Bugfixes on 0.1.0.x:
  792. - If you write "HiddenServicePort 6667 127.0.0.1 6668" in your
  793. torrc rather than "HiddenServicePort 6667 127.0.0.1:6668",
  794. it would silently using ignore the 6668.
  795. Changes in version 0.1.1.4-alpha - 2005-08-04
  796. o Bugfixes included in 0.1.0.13.
  797. o Features:
  798. - Improve tor_gettimeofday() granularity on windows.
  799. - Make clients regenerate their keys when their IP address changes.
  800. - Implement some more GETINFO goodness: expose helper nodes, config
  801. options, getinfo keys.
  802. Changes in version 0.1.1.3-alpha - 2005-07-25
  803. o Bugfixes on 0.1.1.2-alpha:
  804. - Fix a bug in handling the controller's "post descriptor"
  805. function.
  806. - Fix several bugs in handling the controller's "extend circuit"
  807. function.
  808. - Fix a bug in handling the controller's "stream status" event.
  809. - Fix an assert failure if we have a controller listening for
  810. circuit events and we go offline.
  811. - Re-allow hidden service descriptors to publish 0 intro points.
  812. - Fix a crash when generating your hidden service descriptor if
  813. you don't have enough intro points already.
  814. o New features on 0.1.1.2-alpha:
  815. - New controller function "getinfo accounting", to ask how
  816. many bytes we've used in this time period.
  817. - Experimental support for helper nodes: a lot of the risk from
  818. a small static adversary comes because users pick new random
  819. nodes every time they rebuild a circuit. Now users will try to
  820. stick to the same small set of entry nodes if they can. Not
  821. enabled by default yet.
  822. o Bugfixes on 0.1.0.12:
  823. - If you're an auth dir server, always publish your dirport,
  824. even if you haven't yet found yourself to be reachable.
  825. - Fix a size_t underflow in smartlist_join_strings2() that made
  826. it do bad things when you hand it an empty smartlist.
  827. Changes in version 0.1.1.2-alpha - 2005-07-14
  828. o New directory servers:
  829. - tor26 has changed IP address.
  830. o Bugfixes on 0.1.0.x, crashes/leaks:
  831. - Port the servers-not-obeying-their-exit-policies fix from 0.1.0.11.
  832. - Fix an fd leak in start_daemon().
  833. - On Windows, you can't always reopen a port right after you've
  834. closed it. So change retry_listeners() to only close and re-open
  835. ports that have changed.
  836. - Fix a possible double-free in tor_gzip_uncompress().
  837. o Bugfixes on 0.1.0.x, usability:
  838. - When tor_socketpair() fails in Windows, give a reasonable
  839. Windows-style errno back.
  840. - Let people type "tor --install" as well as "tor -install" when they
  841. want to make it an NT service.
  842. - NT service patch from Matt Edman to improve error messages.
  843. - When the controller asks for a config option with an abbreviated
  844. name, give the full name in our response.
  845. - Correct the man page entry on TrackHostExitsExpire.
  846. - Looks like we were never delivering deflated (i.e. compressed)
  847. running-routers lists, even when asked. Oops.
  848. - When --disable-threads is set, do not search for or link against
  849. pthreads libraries.
  850. o Bugfixes on 0.1.1.x:
  851. - Fix a seg fault with autodetecting which controller version is
  852. being used.
  853. o Features:
  854. - New hidden service descriptor format: put a version in it, and
  855. let people specify introduction/rendezvous points that aren't
  856. in "the directory" (which is subjective anyway).
  857. - Allow the DEBUG controller event to work again. Mark certain log
  858. entries as "don't tell this to controllers", so we avoid cycles.
  859. Changes in version 0.1.1.1-alpha - 2005-06-29
  860. o Bugfixes:
  861. - Make OS X init script check for missing argument, so we don't
  862. confuse users who invoke it incorrectly.
  863. - Fix a seg fault in "tor --hash-password foo".
  864. - Fix a possible way to DoS dirservers.
  865. - When we complain that your exit policy implicitly allows local or
  866. private address spaces, name them explicitly so operators can
  867. fix it.
  868. - Make the log message less scary when all the dirservers are
  869. temporarily unreachable.
  870. - We were printing the number of idle dns workers incorrectly when
  871. culling them.
  872. o Features:
  873. - Revised controller protocol (version 1) that uses ascii rather
  874. than binary. Add supporting libraries in python and java so you
  875. can use the controller from your applications without caring how
  876. our protocol works.
  877. - Spiffy new support for crypto hardware accelerators. Can somebody
  878. test this?
  879. Changes in version 0.1.0.17 - 2006-02-17
  880. o Crash bugfixes on 0.1.0.x:
  881. - When servers with a non-zero DirPort came out of hibernation,
  882. sometimes they would trigger an assert.
  883. o Other important bugfixes:
  884. - On platforms that don't have getrlimit (like Windows), we were
  885. artificially constraining ourselves to a max of 1024
  886. connections. Now just assume that we can handle as many as 15000
  887. connections. Hopefully this won't cause other problems.
  888. o Backported features:
  889. - When we're a server, a client asks for an old-style directory,
  890. and our write bucket is empty, don't give it to him. This way
  891. small servers can continue to serve the directory *sometimes*,
  892. without getting overloaded.
  893. - Whenever you get a 503 in response to a directory fetch, try
  894. once more. This will become important once servers start sending
  895. 503's whenever they feel busy.
  896. - Fetch a new directory every 120 minutes, not every 40 minutes.
  897. Now that we have hundreds of thousands of users running the old
  898. directory algorithm, it's starting to hurt a lot.
  899. - Bump up the period for forcing a hidden service descriptor upload
  900. from 20 minutes to 1 hour.
  901. Changes in version 0.1.0.16 - 2006-01-02
  902. o Crash bugfixes on 0.1.0.x:
  903. - On Windows, build with a libevent patch from "I-M Weasel" to avoid
  904. corrupting the heap, losing FDs, or crashing when we need to resize
  905. the fd_sets. (This affects the Win32 binaries, not Tor's sources.)
  906. - It turns out sparc64 platforms crash on unaligned memory access
  907. too -- so detect and avoid this.
  908. - Handle truncated compressed data correctly (by detecting it and
  909. giving an error).
  910. - Fix possible-but-unlikely free(NULL) in control.c.
  911. - When we were closing connections, there was a rare case that
  912. stomped on memory, triggering seg faults and asserts.
  913. - Avoid potential infinite recursion when building a descriptor. (We
  914. don't know that it ever happened, but better to fix it anyway.)
  915. - We were neglecting to unlink marked circuits from soon-to-close OR
  916. connections, which caused some rare scribbling on freed memory.
  917. - Fix a memory stomping race bug when closing the joining point of two
  918. rendezvous circuits.
  919. - Fix an assert in time parsing found by Steven Murdoch.
  920. o Other bugfixes on 0.1.0.x:
  921. - When we're doing reachability testing, provide more useful log
  922. messages so the operator knows what to expect.
  923. - Do not check whether DirPort is reachable when we are suppressing
  924. advertising it because of hibernation.
  925. - When building with -static or on Solaris, we sometimes needed -ldl.
  926. - One of the dirservers (tor26) changed its IP address.
  927. - When we're deciding whether a stream has enough circuits around
  928. that can handle it, count the freshly dirty ones and not the ones
  929. that are so dirty they won't be able to handle it.
  930. - When we're expiring old circuits, we had a logic error that caused
  931. us to close new rendezvous circuits rather than old ones.
  932. - Give a more helpful log message when you try to change ORPort via
  933. the controller: you should upgrade Tor if you want that to work.
  934. - We were failing to parse Tor versions that start with "Tor ".
  935. - Tolerate faulty streams better: when a stream fails for reason
  936. exitpolicy, stop assuming that the router is lying about his exit
  937. policy. When a stream fails for reason misc, allow it to retry just
  938. as if it was resolvefailed. When a stream has failed three times,
  939. reset its failure count so we can try again and get all three tries.
  940. Changes in version 0.1.0.15 - 2005-09-23
  941. o Bugfixes on 0.1.0.x:
  942. - Reject ports 465 and 587 (spam targets) in default exit policy.
  943. - Don't crash when we don't have any spare file descriptors and we
  944. try to spawn a dns or cpu worker.
  945. - Get rid of IgnoreVersion undocumented config option, and make us
  946. only warn, never exit, when we're running an obsolete version.
  947. - Don't try to print a null string when your server finds itself to
  948. be unreachable and the Address config option is empty.
  949. - Make the numbers in read-history and write-history into uint64s,
  950. so they don't overflow and publish negatives in the descriptor.
  951. - Fix a minor memory leak in smartlist_string_remove().
  952. - We were only allowing ourselves to upload a server descriptor at
  953. most every 20 minutes, even if it changed earlier than that.
  954. - Clean up log entries that pointed to old URLs.
  955. Changes in version 0.1.0.14 - 2005-08-08
  956. o Bugfixes on 0.1.0.x:
  957. - Fix the other half of the bug with crypto handshakes
  958. (CVE-2005-2643).
  959. - Fix an assert trigger if you send a 'signal term' via the
  960. controller when it's listening for 'event info' messages.
  961. Changes in version 0.1.0.13 - 2005-08-04
  962. o Bugfixes on 0.1.0.x:
  963. - Fix a critical bug in the security of our crypto handshakes.
  964. - Fix a size_t underflow in smartlist_join_strings2() that made
  965. it do bad things when you hand it an empty smartlist.
  966. - Fix Windows installer to ship Tor license (thanks to Aphex for
  967. pointing out this oversight) and put a link to the doc directory
  968. in the start menu.
  969. - Explicitly set no-unaligned-access for sparc: it turns out the
  970. new gcc's let you compile broken code, but that doesn't make it
  971. not-broken.
  972. Changes in version 0.1.0.12 - 2005-07-18
  973. o New directory servers:
  974. - tor26 has changed IP address.
  975. o Bugfixes on 0.1.0.x:
  976. - Fix a possible double-free in tor_gzip_uncompress().
  977. - When --disable-threads is set, do not search for or link against
  978. pthreads libraries.
  979. - Don't trigger an assert if an authoritative directory server
  980. claims its dirport is 0.
  981. - Fix bug with removing Tor as an NT service: some people were
  982. getting "The service did not return an error." Thanks to Matt
  983. Edman for the fix.
  984. Changes in version 0.1.0.11 - 2005-06-30
  985. o Bugfixes on 0.1.0.x:
  986. - Fix major security bug: servers were disregarding their
  987. exit policies if clients behaved unexpectedly.
  988. - Make OS X init script check for missing argument, so we don't
  989. confuse users who invoke it incorrectly.
  990. - Fix a seg fault in "tor --hash-password foo".
  991. - The MAPADDRESS control command was broken.
  992. Changes in version 0.1.0.10 - 2005-06-14
  993. o Fixes on Win32:
  994. - Make NT services work and start on startup on Win32 (based on
  995. patch by Matt Edman). See the FAQ entry for details.
  996. - Make 'platform' string in descriptor more accurate for Win32
  997. servers, so it's not just "unknown platform".
  998. - REUSEADDR on normal platforms means you can rebind to the port
  999. right after somebody else has let it go. But REUSEADDR on Win32
  1000. means you can bind to the port _even when somebody else already
  1001. has it bound_! So, don't do that on Win32.
  1002. - Clean up the log messages when starting on Win32 with no config
  1003. file.
  1004. - Allow seeding the RNG on Win32 even when you're not running as
  1005. Administrator. If seeding the RNG on Win32 fails, quit.
  1006. o Assert / crash bugs:
  1007. - Refuse relay cells that claim to have a length larger than the
  1008. maximum allowed. This prevents a potential attack that could read
  1009. arbitrary memory (e.g. keys) from an exit server's process
  1010. (CVE-2005-2050).
  1011. - If unofficial Tor clients connect and send weird TLS certs, our
  1012. Tor server triggers an assert. Stop asserting, and start handling
  1013. TLS errors better in other situations too.
  1014. - Fix a race condition that can trigger an assert when we have a
  1015. pending create cell and an OR connection attempt fails.
  1016. o Resource leaks:
  1017. - Use pthreads for worker processes rather than forking. This was
  1018. forced because when we forked, we ended up wasting a lot of
  1019. duplicate ram over time.
  1020. - Also switch to foo_r versions of some library calls to allow
  1021. reentry and threadsafeness.
  1022. - Implement --disable-threads configure option. Disable threads on
  1023. netbsd and openbsd by default, because they have no reentrant
  1024. resolver functions (!), and on solaris since it has other
  1025. threading issues.
  1026. - Fix possible bug on threading platforms (e.g. win32) which was
  1027. leaking a file descriptor whenever a cpuworker or dnsworker died.
  1028. - Fix a minor memory leak when somebody establishes an introduction
  1029. point at your Tor server.
  1030. - Fix possible memory leak in tor_lookup_hostname(). (Thanks to
  1031. Adam Langley.)
  1032. - Add ./configure --with-dmalloc option, to track memory leaks.
  1033. - And try to free all memory on closing, so we can detect what
  1034. we're leaking.
  1035. o Protocol correctness:
  1036. - When we've connected to an OR and handshaked but didn't like
  1037. the result, we were closing the conn without sending destroy
  1038. cells back for pending circuits. Now send those destroys.
  1039. - Start sending 'truncated' cells back rather than destroy cells
  1040. if the circuit closes in front of you. This means we won't have
  1041. to abandon partially built circuits.
  1042. - Handle changed router status correctly when dirserver reloads
  1043. fingerprint file. We used to be dropping all unverified descriptors
  1044. right then. The bug was hidden because we would immediately
  1045. fetch a directory from another dirserver, which would include the
  1046. descriptors we just dropped.
  1047. - Revise tor-spec to add more/better stream end reasons.
  1048. - Revise all calls to connection_edge_end to avoid sending 'misc',
  1049. and to take errno into account where possible.
  1050. - Client now retries when streams end early for 'hibernating' or
  1051. 'resource limit' reasons, rather than failing them.
  1052. - Try to be more zealous about calling connection_edge_end when
  1053. things go bad with edge conns in connection.c.
  1054. o Robustness improvements:
  1055. - Better handling for heterogeneous / unreliable nodes:
  1056. - Annotate circuits with whether they aim to contain high uptime
  1057. nodes and/or high capacity nodes. When building circuits, choose
  1058. appropriate nodes.
  1059. - This means that every single node in an intro rend circuit,
  1060. not just the last one, will have a minimum uptime.
  1061. - New config option LongLivedPorts to indicate application streams
  1062. that will want high uptime circuits.
  1063. - Servers reset uptime when a dir fetch entirely fails. This
  1064. hopefully reflects stability of the server's network connectivity.
  1065. - If somebody starts his tor server in Jan 2004 and then fixes his
  1066. clock, don't make his published uptime be a year.
  1067. - Reset published uptime when we wake up from hibernation.
  1068. - Introduce a notion of 'internal' circs, which are chosen without
  1069. regard to the exit policy of the last hop. Intro and rendezvous
  1070. circs must be internal circs, to avoid leaking information. Resolve
  1071. and connect streams can use internal circs if they want.
  1072. - New circuit pooling algorithm: keep track of what destination ports
  1073. we've used recently (start out assuming we'll want to use 80), and
  1074. make sure to have enough circs around to satisfy these ports. Also
  1075. make sure to have 2 internal circs around if we've required internal
  1076. circs lately (and with high uptime if we've seen that lately too).
  1077. - Turn addr_policy_compare from a tristate to a quadstate; this should
  1078. help address our "Ah, you allow 1.2.3.4:80. You are a good choice
  1079. for google.com" problem.
  1080. - When a client asks us for a dir mirror and we don't have one,
  1081. launch an attempt to get a fresh one.
  1082. - First cut at support for "create-fast" cells. Clients can use
  1083. these when extending to their first hop, since the TLS already
  1084. provides forward secrecy and authentication. Not enabled on
  1085. clients yet.
  1086. o Reachability testing.
  1087. - Your Tor server will automatically try to see if its ORPort and
  1088. DirPort are reachable from the outside, and it won't upload its
  1089. descriptor until it decides at least ORPort is reachable (when
  1090. DirPort is not yet found reachable, publish it as zero).
  1091. - When building testing circs for ORPort testing, use only
  1092. high-bandwidth nodes, so fewer circuits fail.
  1093. - Notice when our IP changes, and reset stats/uptime/reachability.
  1094. - Authdirservers don't do ORPort reachability detection, since
  1095. they're in clique mode, so it will be rare to find a server not
  1096. already connected to them.
  1097. - Authdirservers now automatically approve nodes running 0.1.0.2-rc
  1098. or later.
  1099. o Dirserver fixes:
  1100. - Now we allow two unverified servers with the same nickname
  1101. but different keys. But if a nickname is verified, only that
  1102. nickname+key are allowed.
  1103. - If you're an authdirserver connecting to an address:port,
  1104. and it's not the OR you were expecting, forget about that
  1105. descriptor. If he *was* the one you were expecting, then forget
  1106. about all other descriptors for that address:port.
  1107. - Allow servers to publish descriptors from 12 hours in the future.
  1108. Corollary: only whine about clock skew from the dirserver if
  1109. he's a trusted dirserver (since now even verified servers could
  1110. have quite wrong clocks).
  1111. - Require servers that use the default dirservers to have public IP
  1112. addresses. We have too many servers that are configured with private
  1113. IPs and their admins never notice the log entries complaining that
  1114. their descriptors are being rejected.
  1115. o Efficiency improvements:
  1116. - Use libevent. Now we can use faster async cores (like epoll, kpoll,
  1117. and /dev/poll), and hopefully work better on Windows too.
  1118. - Apple's OS X 10.4.0 ships with a broken kqueue API, and using
  1119. kqueue on 10.3.9 causes kernel panics. Don't use kqueue on OS X.
  1120. - Find libevent even if it's hiding in /usr/local/ and your
  1121. CFLAGS and LDFLAGS don't tell you to look there.
  1122. - Be able to link with libevent as a shared library (the default
  1123. after 1.0d), even if it's hiding in /usr/local/lib and even
  1124. if you haven't added /usr/local/lib to your /etc/ld.so.conf,
  1125. assuming you're running gcc. Otherwise fail and give a useful
  1126. error message.
  1127. - Switch to a new buffer management algorithm, which tries to avoid
  1128. reallocing and copying quite as much. In first tests it looks like
  1129. it uses *more* memory on average, but less cpu.
  1130. - Switch our internal buffers implementation to use a ring buffer,
  1131. to hopefully improve performance for fast servers a lot.
  1132. - Reenable the part of the code that tries to flush as soon as an
  1133. OR outbuf has a full TLS record available. Perhaps this will make
  1134. OR outbufs not grow as huge except in rare cases, thus saving lots
  1135. of CPU time plus memory.
  1136. - Improve performance for dirservers: stop re-parsing the whole
  1137. directory every time you regenerate it.
  1138. - Keep a big splay tree of (circid,orconn)->circuit mappings to make
  1139. it much faster to look up a circuit for each relay cell.
  1140. - Remove most calls to assert_all_pending_dns_resolves_ok(),
  1141. since they're eating our cpu on exit nodes.
  1142. - Stop wasting time doing a case insensitive comparison for every
  1143. dns name every time we do any lookup. Canonicalize the names to
  1144. lowercase when you first see them.
  1145. o Hidden services:
  1146. - Handle unavailable hidden services better. Handle slow or busy
  1147. hidden services better.
  1148. - Cannibalize GENERAL circs to be C_REND, C_INTRO, S_INTRO, and S_REND
  1149. circ as necessary, if there are any completed ones lying around
  1150. when we try to launch one.
  1151. - Make hidden services try to establish a rendezvous for 30 seconds
  1152. after fetching the descriptor, rather than for n (where n=3)
  1153. attempts to build a circuit.
  1154. - Adjust maximum skew and age for rendezvous descriptors: let skew
  1155. be 48 hours rather than 90 minutes.
  1156. - Reject malformed .onion addresses rather then passing them on as
  1157. normal web requests.
  1158. o Controller:
  1159. - More Tor controller support. See
  1160. http://tor.eff.org/doc/control-spec.txt for all the new features,
  1161. including signals to emulate unix signals from any platform;
  1162. redirectstream; extendcircuit; mapaddress; getinfo; postdescriptor;
  1163. closestream; closecircuit; etc.
  1164. - Encode hashed controller passwords in hex instead of base64,
  1165. to make it easier to write controllers.
  1166. - Revise control spec and implementation to allow all log messages to
  1167. be sent to controller with their severities intact (suggested by
  1168. Matt Edman). Disable debug-level logs while delivering a debug-level
  1169. log to the controller, to prevent loop. Update TorControl to handle
  1170. new log event types.
  1171. o New config options/defaults:
  1172. - Begin scrubbing sensitive strings from logs by default. Turn off
  1173. the config option SafeLogging if you need to do debugging.
  1174. - New exit policy: accept most low-numbered ports, rather than
  1175. rejecting most low-numbered ports.
  1176. - Put a note in the torrc about abuse potential with the default
  1177. exit policy.
  1178. - Add support for CONNECTing through https proxies, with "HttpsProxy"
  1179. config option.
  1180. - Add HttpProxyAuthenticator and HttpsProxyAuthenticator support
  1181. based on patch from Adam Langley (basic auth only).
  1182. - Bump the default BandwidthRate from 1 MB to 2 MB, to accommodate
  1183. the fast servers that have been joining lately. (Clients are now
  1184. willing to load balance over up to 2 MB of advertised bandwidth
  1185. capacity too.)
  1186. - New config option MaxAdvertisedBandwidth which lets you advertise
  1187. a low bandwidthrate (to not attract as many circuits) while still
  1188. allowing a higher bandwidthrate in reality.
  1189. - Require BandwidthRate to be at least 20kB/s for servers.
  1190. - Add a NoPublish config option, so you can be a server (e.g. for
  1191. testing running Tor servers in other Tor networks) without
  1192. publishing your descriptor to the primary dirservers.
  1193. - Add a new AddressMap config directive to rewrite incoming socks
  1194. addresses. This lets you, for example, declare an implicit
  1195. required exit node for certain sites.
  1196. - Add a new TrackHostExits config directive to trigger addressmaps
  1197. for certain incoming socks addresses -- for sites that break when
  1198. your exit keeps changing (based on patch from Mike Perry).
  1199. - Split NewCircuitPeriod option into NewCircuitPeriod (30 secs),
  1200. which describes how often we retry making new circuits if current
  1201. ones are dirty, and MaxCircuitDirtiness (10 mins), which describes
  1202. how long we're willing to make use of an already-dirty circuit.
  1203. - Change compiled-in SHUTDOWN_WAIT_LENGTH from a fixed 30 secs to
  1204. a config option "ShutdownWaitLength" (when using kill -INT on
  1205. servers).
  1206. - Fix an edge case in parsing config options: if they say "--"
  1207. on the commandline, it's not a config option (thanks weasel).
  1208. - New config option DirAllowPrivateAddresses for authdirservers.
  1209. Now by default they refuse router descriptors that have non-IP or
  1210. private-IP addresses.
  1211. - Change DirFetchPeriod/StatusFetchPeriod to have a special "Be
  1212. smart" default value: low for servers and high for clients.
  1213. - Some people were putting "Address " in their torrc, and they had
  1214. a buggy resolver that resolved " " to 0.0.0.0. Oops.
  1215. - If DataDir is ~/.tor, and that expands to /.tor, then default to
  1216. LOCALSTATEDIR/tor instead.
  1217. - Implement --verify-config command-line option to check if your torrc
  1218. is valid without actually launching Tor.
  1219. o Logging improvements:
  1220. - When dirservers refuse a server descriptor, we now log its
  1221. contactinfo, platform, and the poster's IP address.
  1222. - Only warn once per nickname from add_nickname_list_to_smartlist()
  1223. per failure, so an entrynode or exitnode choice that's down won't
  1224. yell so much.
  1225. - When we're connecting to an OR and he's got a different nickname/key
  1226. than we were expecting, only complain loudly if we're an OP or a
  1227. dirserver. Complaining loudly to the OR admins just confuses them.
  1228. - Whine at you if you're a server and you don't set your contactinfo.
  1229. - Warn when exit policy implicitly allows local addresses.
  1230. - Give a better warning when some other server advertises an
  1231. ORPort that is actually an apache running ssl.
  1232. - If we get an incredibly skewed timestamp from a dirserver mirror
  1233. that isn't a verified OR, don't warn -- it's probably him that's
  1234. wrong.
  1235. - When a dirserver causes you to give a warn, mention which dirserver
  1236. it was.
  1237. - Initialize libevent later in the startup process, so the logs are
  1238. already established by the time we start logging libevent warns.
  1239. - Use correct errno on win32 if libevent fails.
  1240. - Check and warn about known-bad/slow libevent versions.
  1241. - Stop warning about sigpipes in the logs. We're going to
  1242. pretend that getting these occassionally is normal and fine.
  1243. o New contrib scripts:
  1244. - New experimental script tor/contrib/exitlist: a simple python
  1245. script to parse directories and find Tor nodes that exit to listed
  1246. addresses/ports.
  1247. - New experimental script tor/contrib/ExerciseServer.py (needs more
  1248. work) that uses the controller interface to build circuits and
  1249. fetch pages over them. This will help us bootstrap servers that
  1250. have lots of capacity but haven't noticed it yet.
  1251. - New experimental script tor/contrib/PathDemo.py (needs more work)
  1252. that uses the controller interface to let you choose whole paths
  1253. via addresses like
  1254. "<hostname>.<path,separated by dots>.<length of path>.path"
  1255. - New contributed script "privoxy-tor-toggle" to toggle whether
  1256. Privoxy uses Tor. Seems to be configured for Debian by default.
  1257. - Have torctl.in/tor.sh.in check for location of su binary (needed
  1258. on FreeBSD)
  1259. o Misc bugfixes:
  1260. - chdir() to your datadirectory at the *end* of the daemonize process,
  1261. not the beginning. This was a problem because the first time you
  1262. run tor, if your datadir isn't there, and you have runasdaemon set
  1263. to 1, it will try to chdir to it before it tries to create it. Oops.
  1264. - Fix several double-mark-for-close bugs, e.g. where we were finding
  1265. a conn for a cell even if that conn is already marked for close.
  1266. - Stop most cases of hanging up on a socks connection without sending
  1267. the socks reject.
  1268. - Fix a bug in the RPM package: set home directory for _tor to
  1269. something more reasonable when first installing.
  1270. - Stop putting nodename in the Platform string in server descriptors.
  1271. It doesn't actually help, and it is confusing/upsetting some people.
  1272. - When using preferred entry or exit nodes, ignore whether the
  1273. circuit wants uptime or capacity. They asked for the nodes, they
  1274. get the nodes.
  1275. - Tie MAX_DIR_SIZE to MAX_BUF_SIZE, so now directory sizes won't get
  1276. artificially capped at 500kB.
  1277. - Cache local dns resolves correctly even when they're .exit
  1278. addresses.
  1279. - If we're hibernating and we get a SIGINT, exit immediately.
  1280. - tor-resolve requests were ignoring .exit if there was a working circuit
  1281. they could use instead.
  1282. - Pay more attention to the ClientOnly config option.
  1283. - Resolve OS X installer bugs: stop claiming to be 0.0.9.2 in certain
  1284. installer screens; and don't put stuff into StartupItems unless
  1285. the user asks you to.
  1286. o Misc features:
  1287. - Rewrite address "serifos.exit" to "externalIP.serifos.exit"
  1288. rather than just rejecting it.
  1289. - If our clock jumps forward by 100 seconds or more, assume something
  1290. has gone wrong with our network and abandon all not-yet-used circs.
  1291. - When an application is using socks5, give him the whole variety of
  1292. potential socks5 responses (connect refused, host unreachable, etc),
  1293. rather than just "success" or "failure".
  1294. - A more sane version numbering system. See
  1295. http://tor.eff.org/cvs/tor/doc/version-spec.txt for details.
  1296. - Change version parsing logic: a version is "obsolete" if it is not
  1297. recommended and (1) there is a newer recommended version in the
  1298. same series, or (2) there are no recommended versions in the same
  1299. series, but there are some recommended versions in a newer series.
  1300. A version is "new" if it is newer than any recommended version in
  1301. the same series.
  1302. - Report HTTP reasons to client when getting a response from directory
  1303. servers -- so you can actually know what went wrong.
  1304. - Reject odd-looking addresses at the client (e.g. addresses that
  1305. contain a colon), rather than having the server drop them because
  1306. they're malformed.
  1307. - Stop publishing socksport in the directory, since it's not
  1308. actually meant to be public. For compatibility, publish a 0 there
  1309. for now.
  1310. - Since we ship our own Privoxy on OS X, tweak it so it doesn't write
  1311. cookies to disk and doesn't log each web request to disk. (Thanks
  1312. to Brett Carrington for pointing this out.)
  1313. - Add OSX uninstall instructions. An actual uninstall script will
  1314. come later.
  1315. - Add "opt hibernating 1" to server descriptor to make it clearer
  1316. whether the server is hibernating.
  1317. Changes in version 0.0.9.10 - 2005-06-16
  1318. o Bugfixes on 0.0.9.x (backported from 0.1.0.10):
  1319. - Refuse relay cells that claim to have a length larger than the
  1320. maximum allowed. This prevents a potential attack that could read
  1321. arbitrary memory (e.g. keys) from an exit server's process
  1322. (CVE-2005-2050).
  1323. Changes in version 0.0.9.9 - 2005-04-23
  1324. o Bugfixes on 0.0.9.x:
  1325. - If unofficial Tor clients connect and send weird TLS certs, our
  1326. Tor server triggers an assert. This release contains a minimal
  1327. backport from the broader fix that we put into 0.1.0.4-rc.
  1328. Changes in version 0.0.9.8 - 2005-04-07
  1329. o Bugfixes on 0.0.9.x:
  1330. - We have a bug that I haven't found yet. Sometimes, very rarely,
  1331. cpuworkers get stuck in the 'busy' state, even though the cpuworker
  1332. thinks of itself as idle. This meant that no new circuits ever got
  1333. established. Here's a workaround to kill any cpuworker that's been
  1334. busy for more than 100 seconds.
  1335. Changes in version 0.0.9.7 - 2005-04-01
  1336. o Bugfixes on 0.0.9.x:
  1337. - Fix another race crash bug (thanks to Glenn Fink for reporting).
  1338. - Compare identity to identity, not to nickname, when extending to
  1339. a router not already in the directory. This was preventing us from
  1340. extending to unknown routers. Oops.
  1341. - Make sure to create OS X Tor user in <500 range, so we aren't
  1342. creating actual system users.
  1343. - Note where connection-that-hasn't-sent-end was marked, and fix
  1344. a few really loud instances of this harmless bug (it's fixed more
  1345. in 0.1.0.x).
  1346. Changes in version 0.0.9.6 - 2005-03-24
  1347. o Bugfixes on 0.0.9.x (crashes and asserts):
  1348. - Add new end stream reasons to maintainance branch. Fix bug where
  1349. reason (8) could trigger an assert. Prevent bug from recurring.
  1350. - Apparently win32 stat wants paths to not end with a slash.
  1351. - Fix assert triggers in assert_cpath_layer_ok(), where we were
  1352. blowing away the circuit that conn->cpath_layer points to, then
  1353. checking to see if the circ is well-formed. Backport check to make
  1354. sure we dont use the cpath on a closed connection.
  1355. - Prevent circuit_resume_edge_reading_helper() from trying to package
  1356. inbufs for marked-for-close streams.
  1357. - Don't crash on hup if your options->address has become unresolvable.
  1358. - Some systems (like OS X) sometimes accept() a connection and tell
  1359. you the remote host is 0.0.0.0:0. If this happens, due to some
  1360. other mis-features, we get confused; so refuse the conn for now.
  1361. o Bugfixes on 0.0.9.x (other):
  1362. - Fix harmless but scary "Unrecognized content encoding" warn message.
  1363. - Add new stream error reason: TORPROTOCOL reason means "you are not
  1364. speaking a version of Tor I understand; say bye-bye to your stream."
  1365. - Be willing to cache directories from up to ROUTER_MAX_AGE seconds
  1366. into the future, now that we are more tolerant of skew. This
  1367. resolves a bug where a Tor server would refuse to cache a directory
  1368. because all the directories it gets are too far in the future;
  1369. yet the Tor server never logs any complaints about clock skew.
  1370. - Mac packaging magic: make man pages useable, and do not overwrite
  1371. existing torrc files.
  1372. - Make OS X log happily to /var/log/tor/tor.log
  1373. Changes in version 0.0.9.5 - 2005-02-22
  1374. o Bugfixes on 0.0.9.x:
  1375. - Fix an assert race at exit nodes when resolve requests fail.
  1376. - Stop picking unverified dir mirrors--it only leads to misery.
  1377. - Patch from Matt Edman to make NT services work better. Service
  1378. support is still not compiled into the executable by default.
  1379. - Patch from Dmitri Bely so the Tor service runs better under
  1380. the win32 SYSTEM account.
  1381. - Make tor-resolve actually work (?) on Win32.
  1382. - Fix a sign bug when getrlimit claims to have 4+ billion
  1383. file descriptors available.
  1384. - Stop refusing to start when bandwidthburst == bandwidthrate.
  1385. - When create cells have been on the onion queue more than five
  1386. seconds, just send back a destroy and take them off the list.
  1387. Changes in version 0.0.9.4 - 2005-02-03
  1388. o Bugfixes on 0.0.9:
  1389. - Fix an assert bug that took down most of our servers: when
  1390. a server claims to have 1 GB of bandwidthburst, don't
  1391. freak out.
  1392. - Don't crash as badly if we have spawned the max allowed number
  1393. of dnsworkers, or we're out of file descriptors.
  1394. - Block more file-sharing ports in the default exit policy.
  1395. - MaxConn is now automatically set to the hard limit of max
  1396. file descriptors we're allowed (ulimit -n), minus a few for
  1397. logs, etc.
  1398. - Give a clearer message when servers need to raise their
  1399. ulimit -n when they start running out of file descriptors.
  1400. - SGI Compatibility patches from Jan Schaumann.
  1401. - Tolerate a corrupt cached directory better.
  1402. - When a dirserver hasn't approved your server, list which one.
  1403. - Go into soft hibernation after 95% of the bandwidth is used,
  1404. not 99%. This is especially important for daily hibernators who
  1405. have a small accounting max. Hopefully it will result in fewer
  1406. cut connections when the hard hibernation starts.
  1407. - Load-balance better when using servers that claim more than
  1408. 800kB/s of capacity.
  1409. - Make NT services work (experimental, only used if compiled in).
  1410. Changes in version 0.0.9.3 - 2005-01-21
  1411. o Bugfixes on 0.0.9:
  1412. - Backport the cpu use fixes from main branch, so busy servers won't
  1413. need as much processor time.
  1414. - Work better when we go offline and then come back, or when we
  1415. run Tor at boot before the network is up. We do this by
  1416. optimistically trying to fetch a new directory whenever an
  1417. application request comes in and we think we're offline -- the
  1418. human is hopefully a good measure of when the network is back.
  1419. - Backport some minimal hidserv bugfixes: keep rend circuits open as
  1420. long as you keep using them; actually publish hidserv descriptors
  1421. shortly after they change, rather than waiting 20-40 minutes.
  1422. - Enable Mac startup script by default.
  1423. - Fix duplicate dns_cancel_pending_resolve reported by Giorgos Pallas.
  1424. - When you update AllowUnverifiedNodes or FirewallPorts via the
  1425. controller's setconf feature, we were always appending, never
  1426. resetting.
  1427. - When you update HiddenServiceDir via setconf, it was screwing up
  1428. the order of reading the lines, making it fail.
  1429. - Do not rewrite a cached directory back to the cache; otherwise we
  1430. will think it is recent and not fetch a newer one on startup.
  1431. - Workaround for webservers that lie about Content-Encoding: Tor
  1432. now tries to autodetect compressed directories and compression
  1433. itself. This lets us Proxypass dir fetches through apache.
  1434. Changes in version 0.0.9.2 - 2005-01-04
  1435. o Bugfixes on 0.0.9 (crashes and asserts):
  1436. - Fix an assert on startup when the disk is full and you're logging
  1437. to a file.
  1438. - If you do socks4 with an IP of 0.0.0.x but *don't* provide a socks4a
  1439. style address, then we'd crash.
  1440. - Fix an assert trigger when the running-routers string we get from
  1441. a dirserver is broken.
  1442. - Make worker threads start and run on win32. Now win32 servers
  1443. may work better.
  1444. - Bandaid (not actually fix, but now it doesn't crash) an assert
  1445. where the dns worker dies mysteriously and the main Tor process
  1446. doesn't remember anything about the address it was resolving.
  1447. o Bugfixes on 0.0.9 (Win32):
  1448. - Workaround for brain-damaged __FILE__ handling on MSVC: keep Nick's
  1449. name out of the warning/assert messages.
  1450. - Fix a superficial "unhandled error on read" bug on win32.
  1451. - The win32 installer no longer requires a click-through for our
  1452. license, since our Free Software license grants rights but does not
  1453. take any away.
  1454. - Win32: When connecting to a dirserver fails, try another one
  1455. immediately. (This was already working for non-win32 Tors.)
  1456. - Stop trying to parse $HOME on win32 when hunting for default
  1457. DataDirectory.
  1458. - Make tor-resolve.c work on win32 by calling network_init().
  1459. o Bugfixes on 0.0.9 (other):
  1460. - Make 0.0.9.x build on Solaris again.
  1461. - Due to a fencepost error, we were blowing away the \n when reporting
  1462. confvalue items in the controller. So asking for multiple config
  1463. values at once couldn't work.
  1464. - When listing circuits that are pending on an opening OR connection,
  1465. if we're an OR we were listing circuits that *end* at us as
  1466. being pending on every listener, dns/cpu worker, etc. Stop that.
  1467. - Dirservers were failing to create 'running-routers' or 'directory'
  1468. strings if we had more than some threshold of routers. Fix them so
  1469. they can handle any number of routers.
  1470. - Fix a superficial "Duplicate mark for close" bug.
  1471. - Stop checking for clock skew for OR connections, even for servers.
  1472. - Fix a fencepost error that was chopping off the last letter of any
  1473. nickname that is the maximum allowed nickname length.
  1474. - Update URLs in log messages so they point to the new website.
  1475. - Fix a potential problem in mangling server private keys while
  1476. writing to disk (not triggered yet, as far as we know).
  1477. - Include the licenses for other free software we include in Tor,
  1478. now that we're shipping binary distributions more regularly.
  1479. Changes in version 0.0.9.1 - 2004-12-15
  1480. o Bugfixes on 0.0.9:
  1481. - Make hibernation actually work.
  1482. - Make HashedControlPassword config option work.
  1483. - When we're reporting event circuit status to a controller,
  1484. don't use the stream status code.
  1485. Changes in version 0.0.9 - 2004-12-12
  1486. o Bugfixes on 0.0.8.1 (Crashes and asserts):
  1487. - Catch and ignore SIGXFSZ signals when log files exceed 2GB; our
  1488. write() call will fail and we handle it there.
  1489. - When we run out of disk space, or other log writing error, don't
  1490. crash. Just stop logging to that log and continue.
  1491. - Fix isspace() and friends so they still make Solaris happy
  1492. but also so they don't trigger asserts on win32.
  1493. - Fix assert failure on malformed socks4a requests.
  1494. - Fix an assert bug where a hidden service provider would fail if
  1495. the first hop of his rendezvous circuit was down.
  1496. - Better handling of size_t vs int, so we're more robust on 64
  1497. bit platforms.
  1498. o Bugfixes on 0.0.8.1 (Win32):
  1499. - Make windows sockets actually non-blocking (oops), and handle
  1500. win32 socket errors better.
  1501. - Fix parse_iso_time on platforms without strptime (eg win32).
  1502. - win32: when being multithreaded, leave parent fdarray open.
  1503. - Better handling of winsock includes on non-MSV win32 compilers.
  1504. - Change our file IO stuff (especially wrt OpenSSL) so win32 is
  1505. happier.
  1506. - Make unit tests work on win32.
  1507. o Bugfixes on 0.0.8.1 (Path selection and streams):
  1508. - Calculate timeout for waiting for a connected cell from the time
  1509. we sent the begin cell, not from the time the stream started. If
  1510. it took a long time to establish the circuit, we would time out
  1511. right after sending the begin cell.
  1512. - Fix router_compare_addr_to_addr_policy: it was not treating a port
  1513. of * as always matching, so we were picking reject *:* nodes as
  1514. exit nodes too. Oops.
  1515. - When read() failed on a stream, we would close it without sending
  1516. back an end. So 'connection refused' would simply be ignored and
  1517. the user would get no response.
  1518. - Stop a sigpipe: when an 'end' cell races with eof from the app,
  1519. we shouldn't hold-open-until-flush if the eof arrived first.
  1520. - Let resolve conns retry/expire also, rather than sticking around
  1521. forever.
  1522. - Fix more dns related bugs: send back resolve_failed and end cells
  1523. more reliably when the resolve fails, rather than closing the
  1524. circuit and then trying to send the cell. Also attach dummy resolve
  1525. connections to a circuit *before* calling dns_resolve(), to fix
  1526. a bug where cached answers would never be sent in RESOLVED cells.
  1527. o Bugfixes on 0.0.8.1 (Circuits):
  1528. - Finally fix a bug that's been plaguing us for a year:
  1529. With high load, circuit package window was reaching 0. Whenever
  1530. we got a circuit-level sendme, we were reading a lot on each
  1531. socket, but only writing out a bit. So we would eventually reach
  1532. eof. This would be noticed and acted on even when there were still
  1533. bytes sitting in the inbuf.
  1534. - Use identity comparison, not nickname comparison, to choose which
  1535. half of circuit-ID-space each side gets to use. This is needed
  1536. because sometimes we think of a router as a nickname, and sometimes
  1537. as a hex ID, and we can't predict what the other side will do.
  1538. o Bugfixes on 0.0.8.1 (Other):
  1539. - Fix a whole slew of memory leaks.
  1540. - Disallow NDEBUG. We don't ever want anybody to turn off debug.
  1541. - If we are using select, make sure we stay within FD_SETSIZE.
  1542. - When poll() is interrupted, we shouldn't believe the revents values.
  1543. - Add a FAST_SMARTLIST define to optionally inline smartlist_get
  1544. and smartlist_len, which are two major profiling offenders.
  1545. - If do_hup fails, actually notice.
  1546. - Flush the log file descriptor after we print "Tor opening log file",
  1547. so we don't see those messages days later.
  1548. - Hidden service operators now correctly handle version 1 style
  1549. INTRODUCE1 cells (nobody generates them still, so not a critical
  1550. bug).
  1551. - Handle more errnos from accept() without closing the listener.
  1552. Some OpenBSD machines were closing their listeners because
  1553. they ran out of file descriptors.
  1554. - Some people had wrapped their tor client/server in a script
  1555. that would restart it whenever it died. This did not play well
  1556. with our "shut down if your version is obsolete" code. Now people
  1557. don't fetch a new directory if their local cached version is
  1558. recent enough.
  1559. - Make our autogen.sh work on ksh as well as bash.
  1560. - Better torrc example lines for dirbindaddress and orbindaddress.
  1561. - Improved bounds checking on parsed ints (e.g. config options and
  1562. the ones we find in directories.)
  1563. - Stop using separate defaults for no-config-file and
  1564. empty-config-file. Now you have to explicitly turn off SocksPort,
  1565. if you don't want it open.
  1566. - We were starting to daemonize before we opened our logs, so if
  1567. there were any problems opening logs, we would complain to stderr,
  1568. which wouldn't work, and then mysteriously exit.
  1569. - If a verified OR connects to us before he's uploaded his descriptor,
  1570. or we verify him and hup but he still has the original TLS
  1571. connection, then conn->nickname is still set like he's unverified.
  1572. o Code security improvements, inspired by Ilja:
  1573. - tor_snprintf wrapper over snprintf with consistent (though not C99)
  1574. overflow behavior.
  1575. - Replace sprintf with tor_snprintf. (I think they were all safe, but
  1576. hey.)
  1577. - Replace strcpy/strncpy with strlcpy in more places.
  1578. - Avoid strcat; use tor_snprintf or strlcat instead.
  1579. o Features (circuits and streams):
  1580. - New circuit building strategy: keep a list of ports that we've
  1581. used in the past 6 hours, and always try to have 2 circuits open
  1582. or on the way that will handle each such port. Seed us with port
  1583. 80 so web users won't complain that Tor is "slow to start up".
  1584. - Make kill -USR1 dump more useful stats about circuits.
  1585. - When warning about retrying or giving up, print the address, so
  1586. the user knows which one it's talking about.
  1587. - If you haven't used a clean circuit in an hour, throw it away,
  1588. just to be on the safe side. (This means after 6 hours a totally
  1589. unused Tor client will have no circuits open.)
  1590. - Support "foo.nickname.exit" addresses, to let Alice request the
  1591. address "foo" as viewed by exit node "nickname". Based on a patch
  1592. from Geoff Goodell.
  1593. - If your requested entry or exit node has advertised bandwidth 0,
  1594. pick it anyway.
  1595. - Be more greedy about filling up relay cells -- we try reading again
  1596. once we've processed the stuff we read, in case enough has arrived
  1597. to fill the last cell completely.
  1598. - Refuse application socks connections to port 0.
  1599. - Use only 0.0.9pre1 and later servers for resolve cells.
  1600. o Features (bandwidth):
  1601. - Hibernation: New config option "AccountingMax" lets you
  1602. set how many bytes per month (in each direction) you want to
  1603. allow your server to consume. Rather than spreading those
  1604. bytes out evenly over the month, we instead hibernate for some
  1605. of the month and pop up at a deterministic time, work until
  1606. the bytes are consumed, then hibernate again. Config option
  1607. "MonthlyAccountingStart" lets you specify which day of the month
  1608. your billing cycle starts on.
  1609. - Implement weekly/monthly/daily accounting: now you specify your
  1610. hibernation properties by
  1611. AccountingMax N bytes|KB|MB|GB|TB
  1612. AccountingStart day|week|month [day] HH:MM
  1613. Defaults to "month 1 0:00".
  1614. - Let bandwidth and interval config options be specified as 5 bytes,
  1615. kb, kilobytes, etc; and as seconds, minutes, hours, days, weeks.
  1616. o Features (directories):
  1617. - New "router-status" line in directory, to better bind each verified
  1618. nickname to its identity key.
  1619. - Clients can ask dirservers for /dir.z to get a compressed version
  1620. of the directory. Only works for servers running 0.0.9, of course.
  1621. - Make clients cache directories and use them to seed their router
  1622. lists at startup. This means clients have a datadir again.
  1623. - Respond to content-encoding headers by trying to uncompress as
  1624. appropriate.
  1625. - Clients and servers now fetch running-routers; cache
  1626. running-routers; compress running-routers; serve compressed
  1627. running-routers.z
  1628. - Make moria2 advertise a dirport of 80, so people behind firewalls
  1629. will be able to get a directory.
  1630. - Http proxy support
  1631. - Dirservers translate requests for http://%s:%d/x to /x
  1632. - You can specify "HttpProxy %s[:%d]" and all dir fetches will
  1633. be routed through this host.
  1634. - Clients ask for /tor/x rather than /x for new enough dirservers.
  1635. This way we can one day coexist peacefully with apache.
  1636. - Clients specify a "Host: %s%d" http header, to be compatible
  1637. with more proxies, and so running squid on an exit node can work.
  1638. - Protect dirservers from overzealous descriptor uploading -- wait
  1639. 10 seconds after directory gets dirty, before regenerating.
  1640. o Features (packages and install):
  1641. - Add NSI installer contributed by J Doe.
  1642. - Apply NT service patch from Osamu Fujino. Still needs more work.
  1643. - Commit VC6 and VC7 workspace/project files.
  1644. - Commit a tor.spec for making RPM files, with help from jbash.
  1645. - Add contrib/torctl.in contributed by Glenn Fink.
  1646. - Make expand_filename handle ~ and ~username.
  1647. - Use autoconf to enable largefile support where necessary. Use
  1648. ftello where available, since ftell can fail at 2GB.
  1649. - Ship src/win32/ in the tarball, so people can use it to build.
  1650. - Make old win32 fall back to CWD if SHGetSpecialFolderLocation
  1651. is broken.
  1652. o Features (ui controller):
  1653. - Control interface: a separate program can now talk to your
  1654. client/server over a socket, and get/set config options, receive
  1655. notifications of circuits and streams starting/finishing/dying,
  1656. bandwidth used, etc. The next step is to get some GUIs working.
  1657. Let us know if you want to help out. See doc/control-spec.txt .
  1658. - Ship a contrib/tor-control.py as an example script to interact
  1659. with the control port.
  1660. - "tor --hash-password zzyxz" will output a salted password for
  1661. use in authenticating to the control interface.
  1662. - Implement the control-spec's SAVECONF command, to write your
  1663. configuration to torrc.
  1664. - Get cookie authentication for the controller closer to working.
  1665. - When set_conf changes our server descriptor, upload a new copy.
  1666. But don't upload it too often if there are frequent changes.
  1667. o Features (config and command-line):
  1668. - Deprecate unofficial config option abbreviations, and abbreviations
  1669. not on the command line.
  1670. - Configuration infrastructure support for warning on obsolete
  1671. options.
  1672. - Give a slightly more useful output for "tor -h".
  1673. - Break DirFetchPostPeriod into:
  1674. - DirFetchPeriod for fetching full directory,
  1675. - StatusFetchPeriod for fetching running-routers,
  1676. - DirPostPeriod for posting server descriptor,
  1677. - RendPostPeriod for posting hidden service descriptors.
  1678. - New log format in config:
  1679. "Log minsev[-maxsev] stdout|stderr|syslog" or
  1680. "Log minsev[-maxsev] file /var/foo"
  1681. - DirPolicy config option, to let people reject incoming addresses
  1682. from their dirserver.
  1683. - "tor --list-fingerprint" will list your identity key fingerprint
  1684. and then exit.
  1685. - Make tor --version --version dump the cvs Id of every file.
  1686. - New 'MyFamily nick1,...' config option for a server to
  1687. specify other servers that shouldn't be used in the same circuit
  1688. with it. Only believed if nick1 also specifies us.
  1689. - New 'NodeFamily nick1,nick2,...' config option for a client to
  1690. specify nodes that it doesn't want to use in the same circuit.
  1691. - New 'Redirectexit pattern address:port' config option for a
  1692. server to redirect exit connections, e.g. to a local squid.
  1693. - Add "pass" target for RedirectExit, to make it easier to break
  1694. out of a sequence of RedirectExit rules.
  1695. - Make the dirservers file obsolete.
  1696. - Include a dir-signing-key token in directories to tell the
  1697. parsing entity which key is being used to sign.
  1698. - Remove the built-in bulky default dirservers string.
  1699. - New config option "Dirserver %s:%d [fingerprint]", which can be
  1700. repeated as many times as needed. If no dirservers specified,
  1701. default to moria1,moria2,tor26.
  1702. - Make 'Routerfile' config option obsolete.
  1703. - Discourage people from setting their dirfetchpostperiod more often
  1704. than once per minute.
  1705. o Features (other):
  1706. - kill -USR2 now moves all logs to loglevel debug (kill -HUP to
  1707. get back to normal.)
  1708. - Accept *:706 (silc) in default exit policy.
  1709. - Implement new versioning format for post 0.1.
  1710. - Distinguish between TOR_TLS_CLOSE and TOR_TLS_ERROR, so we can
  1711. log more informatively.
  1712. - Check clock skew for verified servers, but allow unverified
  1713. servers and clients to have any clock skew.
  1714. - Make sure the hidden service descriptors are at a random offset
  1715. from each other, to hinder linkability.
  1716. - Clients now generate a TLS cert too, in preparation for having
  1717. them act more like real nodes.
  1718. - Add a pure-C tor-resolve implementation.
  1719. - Use getrlimit and friends to ensure we can reach MaxConn (currently
  1720. 1024) file descriptors.
  1721. - Raise the max dns workers from 50 to 100.
  1722. Changes in version 0.0.8.1 - 2004-10-13
  1723. o Bugfixes:
  1724. - Fix a seg fault that can be triggered remotely for Tor
  1725. clients/servers with an open dirport.
  1726. - Fix a rare assert trigger, where routerinfos for entries in
  1727. our cpath would expire while we're building the path.
  1728. - Fix a bug in OutboundBindAddress so it (hopefully) works.
  1729. - Fix a rare seg fault for people running hidden services on
  1730. intermittent connections.
  1731. - Fix a bug in parsing opt keywords with objects.
  1732. - Fix a stale pointer assert bug when a stream detaches and
  1733. reattaches.
  1734. - Fix a string format vulnerability (probably not exploitable)
  1735. in reporting stats locally.
  1736. - Fix an assert trigger: sometimes launching circuits can fail
  1737. immediately, e.g. because too many circuits have failed recently.
  1738. - Fix a compile warning on 64 bit platforms.
  1739. Changes in version 0.0.8 - 2004-08-25
  1740. o Bugfixes:
  1741. - Made our unit tests compile again on OpenBSD 3.5, and tor
  1742. itself compile again on OpenBSD on a sparc64.
  1743. - We were neglecting milliseconds when logging on win32, so
  1744. everything appeared to happen at the beginning of each second.
  1745. - Check directory signature _before_ you decide whether you're
  1746. you're running an obsolete version and should exit.
  1747. - Check directory signature _before_ you parse the running-routers
  1748. list to decide who's running.
  1749. - Check return value of fclose while writing to disk, so we don't
  1750. end up with broken files when servers run out of disk space.
  1751. - Port it to SunOS 5.9 / Athena
  1752. - Fix two bugs in saving onion keys to disk when rotating, so
  1753. hopefully we'll get fewer people using old onion keys.
  1754. - Remove our mostly unused -- and broken -- hex_encode()
  1755. function. Use base16_encode() instead. (Thanks to Timo Lindfors
  1756. for pointing out this bug.)
  1757. - Only pick and establish intro points after we've gotten a
  1758. directory.
  1759. - Fix assert triggers: if the other side returns an address 0.0.0.0,
  1760. don't put it into the client dns cache.
  1761. - If a begin failed due to exit policy, but we believe the IP
  1762. address should have been allowed, switch that router to exitpolicy
  1763. reject *:* until we get our next directory.
  1764. o Protocol changes:
  1765. - 'Extend' relay cell payloads now include the digest of the
  1766. intended next hop's identity key. Now we can verify that we're
  1767. extending to the right router, and also extend to routers we
  1768. hadn't heard of before.
  1769. o Features:
  1770. - Tor nodes can now act as relays (with an advertised ORPort)
  1771. without being manually verified by the dirserver operators.
  1772. - Uploaded descriptors of unverified routers are now accepted
  1773. by the dirservers, and included in the directory.
  1774. - Verified routers are listed by nickname in the running-routers
  1775. list; unverified routers are listed as "$<fingerprint>".
  1776. - We now use hash-of-identity-key in most places rather than
  1777. nickname or addr:port, for improved security/flexibility.
  1778. - AllowUnverifiedNodes config option to let circuits choose no-name
  1779. routers in entry,middle,exit,introduction,rendezvous positions.
  1780. Allow middle and rendezvous positions by default.
  1781. - When picking unverified routers, skip those with low uptime and/or
  1782. low bandwidth, depending on what properties you care about.
  1783. - ClientOnly option for nodes that never want to become servers.
  1784. - Directory caching.
  1785. - "AuthoritativeDir 1" option for the official dirservers.
  1786. - Now other nodes (clients and servers) will cache the latest
  1787. directory they've pulled down.
  1788. - They can enable their DirPort to serve it to others.
  1789. - Clients will pull down a directory from any node with an open
  1790. DirPort, and check the signature/timestamp correctly.
  1791. - Authoritative dirservers now fetch directories from other
  1792. authdirservers, to stay better synced.
  1793. - Running-routers list tells who's down also, along with noting
  1794. if they're verified (listed by nickname) or unverified (listed
  1795. by hash-of-key).
  1796. - Allow dirservers to serve running-router list separately.
  1797. This isn't used yet.
  1798. - You can now fetch $DIRURL/running-routers to get just the
  1799. running-routers line, not the whole descriptor list. (But
  1800. clients don't use this yet.)
  1801. - Clients choose nodes proportional to advertised bandwidth.
  1802. - Clients avoid using nodes with low uptime as introduction points.
  1803. - Handle servers with dynamic IP addresses: don't just replace
  1804. options->Address with the resolved one at startup, and
  1805. detect our address right before we make a routerinfo each time.
  1806. - 'FascistFirewall' option to pick dirservers and ORs on specific
  1807. ports; plus 'FirewallPorts' config option to tell FascistFirewall
  1808. which ports are open. (Defaults to 80,443)
  1809. - Try other dirservers immediately if the one you try is down. This
  1810. should tolerate down dirservers better now.
  1811. - ORs connect-on-demand to other ORs
  1812. - If you get an extend cell to an OR you're not connected to,
  1813. connect, handshake, and forward the create cell.
  1814. - The authoritative dirservers stay connected to everybody,
  1815. and everybody stays connected to 0.0.7 servers, but otherwise
  1816. clients/servers expire unused connections after 5 minutes.
  1817. - When servers get a sigint, they delay 30 seconds (refusing new
  1818. connections) then exit. A second sigint causes immediate exit.
  1819. - File and name management:
  1820. - Look for .torrc if no CONFDIR "torrc" is found.
  1821. - If no datadir is defined, then choose, make, and secure ~/.tor
  1822. as datadir.
  1823. - If torrc not found, exitpolicy reject *:*.
  1824. - Expands ~/ in filenames to $HOME/ (but doesn't yet expand ~arma).
  1825. - If no nickname is defined, derive default from hostname.
  1826. - Rename secret key files, e.g. identity.key -> secret_id_key,
  1827. to discourage people from mailing their identity key to tor-ops.
  1828. - Refuse to build a circuit before the directory has arrived --
  1829. it won't work anyway, since you won't know the right onion keys
  1830. to use.
  1831. - Parse tor version numbers so we can do an is-newer-than check
  1832. rather than an is-in-the-list check.
  1833. - New socks command 'resolve', to let us shim gethostbyname()
  1834. locally.
  1835. - A 'tor_resolve' script to access the socks resolve functionality.
  1836. - A new socks-extensions.txt doc file to describe our
  1837. interpretation and extensions to the socks protocols.
  1838. - Add a ContactInfo option, which gets published in descriptor.
  1839. - Write tor version at the top of each log file
  1840. - New docs in the tarball:
  1841. - tor-doc.html.
  1842. - Document that you should proxy your SSL traffic too.
  1843. - Log a warning if the user uses an unsafe socks variant, so people
  1844. are more likely to learn about privoxy or socat.
  1845. - Log a warning if you're running an unverified server, to let you
  1846. know you might want to get it verified.
  1847. - Change the default exit policy to reject the default edonkey,
  1848. kazaa, gnutella ports.
  1849. - Add replace_file() to util.[ch] to handle win32's rename().
  1850. - Publish OR uptime in descriptor (and thus in directory) too.
  1851. - Remember used bandwidth (both in and out), and publish 15-minute
  1852. snapshots for the past day into our descriptor.
  1853. - Be more aggressive about trying to make circuits when the network
  1854. has changed (e.g. when you unsuspend your laptop).
  1855. - Check for time skew on http headers; report date in response to
  1856. "GET /".
  1857. - If the entrynode config line has only one node, don't pick it as
  1858. an exitnode.
  1859. - Add strict{entry|exit}nodes config options. If set to 1, then
  1860. we refuse to build circuits that don't include the specified entry
  1861. or exit nodes.
  1862. - OutboundBindAddress config option, to bind to a specific
  1863. IP address for outgoing connect()s.
  1864. - End truncated log entries (e.g. directories) with "[truncated]".
  1865. Changes in version 0.0.7.3 - 2004-08-12
  1866. o Stop dnsworkers from triggering an assert failure when you
  1867. ask them to resolve the host "".
  1868. Changes in version 0.0.7.2 - 2004-07-07
  1869. o A better fix for the 0.0.0.0 problem, that will hopefully
  1870. eliminate the remaining related assertion failures.
  1871. Changes in version 0.0.7.1 - 2004-07-04
  1872. o When an address resolves to 0.0.0.0, treat it as a failed resolve,
  1873. since internally we use 0.0.0.0 to signify "not yet resolved".
  1874. Changes in version 0.0.7 - 2004-06-07
  1875. o Fixes for crashes and other obnoxious bugs:
  1876. - Fix an epipe bug: sometimes when directory connections failed
  1877. to connect, we would give them a chance to flush before closing
  1878. them.
  1879. - When we detached from a circuit because of resolvefailed, we
  1880. would immediately try the same circuit twice more, and then
  1881. give up on the resolve thinking we'd tried three different
  1882. exit nodes.
  1883. - Limit the number of intro circuits we'll attempt to build for a
  1884. hidden service per 15-minute period.
  1885. - Check recommended-software string *early*, before actually parsing
  1886. the directory. Thus we can detect an obsolete version and exit,
  1887. even if the new directory format doesn't parse.
  1888. o Fixes for security bugs:
  1889. - Remember which nodes are dirservers when you startup, and if a
  1890. random OR enables his dirport, don't automatically assume he's
  1891. a trusted dirserver.
  1892. o Other bugfixes:
  1893. - Directory connections were asking the wrong poll socket to
  1894. start writing, and not asking themselves to start writing.
  1895. - When we detached from a circuit because we sent a begin but
  1896. didn't get a connected, we would use it again the first time;
  1897. but after that we would correctly switch to a different one.
  1898. - Stop warning when the first onion decrypt attempt fails; they
  1899. will sometimes legitimately fail now that we rotate keys.
  1900. - Override unaligned-access-ok check when $host_cpu is ia64 or
  1901. arm. Apparently they allow it but the kernel whines.
  1902. - Dirservers try to reconnect periodically too, in case connections
  1903. have failed.
  1904. - Fix some memory leaks in directory servers.
  1905. - Allow backslash in Win32 filenames.
  1906. - Made Tor build complain-free on FreeBSD, hopefully without
  1907. breaking other BSD builds. We'll see.
  1908. - Check directory signatures based on name of signer, not on whom
  1909. we got the directory from. This will let us cache directories more
  1910. easily.
  1911. - Rotate dnsworkers and cpuworkers on SIGHUP, so they get new config
  1912. settings too.
  1913. o Features:
  1914. - Doxygen markup on all functions and global variables.
  1915. - Make directory functions update routerlist, not replace it. So
  1916. now directory disagreements are not so critical a problem.
  1917. - Remove the upper limit on number of descriptors in a dirserver's
  1918. directory (not that we were anywhere close).
  1919. - Allow multiple logfiles at different severity ranges.
  1920. - Allow *BindAddress to specify ":port" rather than setting *Port
  1921. separately. Allow multiple instances of each BindAddress config
  1922. option, so you can bind to multiple interfaces if you want.
  1923. - Allow multiple exit policy lines, which are processed in order.
  1924. Now we don't need that huge line with all the commas in it.
  1925. - Enable accept/reject policies on SOCKS connections, so you can bind
  1926. to 0.0.0.0 but still control who can use your OP.
  1927. - Updated the man page to reflect these features.
  1928. Changes in version 0.0.6.2 - 2004-05-16
  1929. o Our integrity-checking digest was checking only the most recent cell,
  1930. not the previous cells like we'd thought.
  1931. Thanks to Stefan Mark for finding the flaw!
  1932. Changes in version 0.0.6.1 - 2004-05-06
  1933. o Fix two bugs in our AES counter-mode implementation (this affected
  1934. onion-level stream encryption, but not TLS-level). It turns
  1935. out we were doing something much more akin to a 16-character
  1936. polyalphabetic cipher. Oops.
  1937. Thanks to Stefan Mark for finding the flaw!
  1938. o Retire moria3 as a directory server, and add tor26 as a directory
  1939. server.
  1940. Changes in version 0.0.6 - 2004-05-02
  1941. o Features:
  1942. - Hidden services and rendezvous points are implemented. Go to
  1943. http://6sxoyfb3h2nvok2d.onion/ for an index of currently available
  1944. hidden services. (This only works via a socks4a proxy such as
  1945. Privoxy, and currently it's quite slow.)
  1946. - We now rotate link (tls context) keys and onion keys.
  1947. - CREATE cells now include oaep padding, so you can tell
  1948. if you decrypted them correctly.
  1949. - Retry stream correctly when we fail to connect because of
  1950. exit-policy-reject (should try another) or can't-resolve-address.
  1951. - When we hup a dirserver and we've *removed* a server from the
  1952. approved-routers list, now we remove that server from the
  1953. in-memory directories too.
  1954. - Add bandwidthburst to server descriptor.
  1955. - Directories now say which dirserver signed them.
  1956. - Use a tor_assert macro that logs failed assertions too.
  1957. - Since we don't support truncateds much, don't bother sending them;
  1958. just close the circ.
  1959. - Fetch randomness from /dev/urandom better (not via fopen/fread)
  1960. - Better debugging for tls errors
  1961. - Set Content-Type on the directory and hidserv descriptor.
  1962. - Remove IVs from cipher code, since AES-ctr has none.
  1963. o Bugfixes:
  1964. - Fix an assert trigger for exit nodes that's been plaguing us since
  1965. the days of 0.0.2prexx (thanks weasel!)
  1966. - Fix a bug where we were closing tls connections intermittently.
  1967. It turns out openssl keeps its errors around -- so if an error
  1968. happens, and you don't ask about it, and then another openssl
  1969. operation happens and succeeds, and you ask if there was an error,
  1970. it tells you about the first error.
  1971. - Fix a bug that's been lurking since 27 may 03 (!)
  1972. When passing back a destroy cell, we would use the wrong circ id.
  1973. - Don't crash if a conn that sent a begin has suddenly lost its circuit.
  1974. - Some versions of openssl have an SSL_pending function that erroneously
  1975. returns bytes when there is a non-application record pending.
  1976. - Win32 fixes. Tor now compiles on win32 with no warnings/errors.
  1977. o We were using an array of length zero in a few places.
  1978. o Win32's gethostbyname can't resolve an IP to an IP.
  1979. o Win32's close can't close a socket.
  1980. o Handle windows socket errors correctly.
  1981. o Portability:
  1982. - check for <sys/limits.h> so we build on FreeBSD again, and
  1983. <machine/limits.h> for NetBSD.
  1984. Changes in version 0.0.5 - 2004-03-30
  1985. o Install torrc as torrc.sample -- we no longer clobber your
  1986. torrc. (Woo!)
  1987. o Fix mangled-state bug in directory fetching (was causing sigpipes).
  1988. o Only build circuits after we've fetched the directory: clients were
  1989. using only the directory servers before they'd fetched a directory.
  1990. This also means longer startup time; so it goes.
  1991. o Fix an assert trigger where an OP would fail to handshake, and we'd
  1992. expect it to have a nickname.
  1993. o Work around a tsocks bug: do a socks reject when AP connection dies
  1994. early, else tsocks goes into an infinite loop.
  1995. o Hold socks connection open until reply is flushed (if possible)
  1996. o Make exit nodes resolve IPs to IPs immediately, rather than asking
  1997. the dns farm to do it.
  1998. o Fix c99 aliasing warnings in rephist.c
  1999. o Don't include server descriptors that are older than 24 hours in the
  2000. directory.
  2001. o Give socks 'reject' replies their whole 15s to attempt to flush,
  2002. rather than seeing the 60s timeout and assuming the flush had failed.
  2003. o Clean automake droppings from the cvs repository
  2004. o Add in a 'notice' log level for things the operator should hear
  2005. but that aren't warnings
  2006. Changes in version 0.0.4 - 2004-03-26
  2007. o When connecting to a dirserver or OR and the network is down,
  2008. we would crash.
  2009. Changes in version 0.0.3 - 2004-03-26
  2010. o Warn and fail if server chose a nickname with illegal characters
  2011. o Port to Solaris and Sparc:
  2012. - include missing header fcntl.h
  2013. - have autoconf find -lsocket -lnsl automatically
  2014. - deal with hardware word alignment
  2015. - make uname() work (solaris has a different return convention)
  2016. - switch from using signal() to sigaction()
  2017. o Preliminary work on reputation system:
  2018. - Keep statistics on success/fail of connect attempts; they're published
  2019. by kill -USR1 currently.
  2020. - Add a RunTesting option to try to learn link state by creating test
  2021. circuits, even when SocksPort is off.
  2022. - Remove unused open circuits when there are too many.
  2023. Changes in version 0.0.2 - 2004-03-19
  2024. - Include strlcpy and strlcat for safer string ops
  2025. - define INADDR_NONE so we compile (but still not run) on solaris
  2026. Changes in version 0.0.2pre27 - 2004-03-14
  2027. o Bugfixes:
  2028. - Allow internal tor networks (we were rejecting internal IPs,
  2029. now we allow them if they're set explicitly).
  2030. - And fix a few endian issues.
  2031. Changes in version 0.0.2pre26 - 2004-03-14
  2032. o New features:
  2033. - If a stream times out after 15s without a connected cell, don't
  2034. try that circuit again: try a new one.
  2035. - Retry streams at most 4 times. Then give up.
  2036. - When a dirserver gets a descriptor from an unknown router, it
  2037. logs its fingerprint (so the dirserver operator can choose to
  2038. accept it even without mail from the server operator).
  2039. - Inform unapproved servers when we reject their descriptors.
  2040. - Make tor build on Windows again. It works as a client, who knows
  2041. about as a server.
  2042. - Clearer instructions in the torrc for how to set up a server.
  2043. - Be more efficient about reading fd's when our global token bucket
  2044. (used for rate limiting) becomes empty.
  2045. o Bugfixes:
  2046. - Stop asserting that computers always go forward in time. It's
  2047. simply not true.
  2048. - When we sent a cell (e.g. destroy) and then marked an OR connection
  2049. expired, we might close it before finishing a flush if the other
  2050. side isn't reading right then.
  2051. - Don't allow dirservers to start if they haven't defined
  2052. RecommendedVersions
  2053. - We were caching transient dns failures. Oops.
  2054. - Prevent servers from publishing an internal IP as their address.
  2055. - Address a strcat vulnerability in circuit.c
  2056. Changes in version 0.0.2pre25 - 2004-03-04
  2057. o New features:
  2058. - Put the OR's IP in its router descriptor, not its fqdn. That way
  2059. we'll stop being stalled by gethostbyname for nodes with flaky dns,
  2060. e.g. poblano.
  2061. o Bugfixes:
  2062. - If the user typed in an address that didn't resolve, the server
  2063. crashed.
  2064. Changes in version 0.0.2pre24 - 2004-03-03
  2065. o Bugfixes:
  2066. - Fix an assertion failure in dns.c, where we were trying to dequeue
  2067. a pending dns resolve even if it wasn't pending
  2068. - Fix a spurious socks5 warning about still trying to write after the
  2069. connection is finished.
  2070. - Hold certain marked_for_close connections open until they're finished
  2071. flushing, rather than losing bytes by closing them too early.
  2072. - Correctly report the reason for ending a stream
  2073. - Remove some duplicate calls to connection_mark_for_close
  2074. - Put switch_id and start_daemon earlier in the boot sequence, so it
  2075. will actually try to chdir() to options.DataDirectory
  2076. - Make 'make test' exit(1) if a test fails; fix some unit tests
  2077. - Make tor fail when you use a config option it doesn't know about,
  2078. rather than warn and continue.
  2079. - Make --version work
  2080. - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
  2081. Changes in version 0.0.2pre23 - 2004-02-29
  2082. o New features:
  2083. - Print a statement when the first circ is finished, so the user
  2084. knows it's working.
  2085. - If a relay cell is unrecognized at the end of the circuit,
  2086. send back a destroy. (So attacks to mutate cells are more
  2087. clearly thwarted.)
  2088. - New config option 'excludenodes' to avoid certain nodes for circuits.
  2089. - When it daemonizes, it chdir's to the DataDirectory rather than "/",
  2090. so you can collect coredumps there.
  2091. o Bugfixes:
  2092. - Fix a bug in tls flushing where sometimes data got wedged and
  2093. didn't flush until more data got sent. Hopefully this bug was
  2094. a big factor in the random delays we were seeing.
  2095. - Make 'connected' cells include the resolved IP, so the client
  2096. dns cache actually gets populated.
  2097. - Disallow changing from ORPort=0 to ORPort>0 on hup.
  2098. - When we time-out on a stream and detach from the circuit, send an
  2099. end cell down it first.
  2100. - Only warn about an unknown router (in exitnodes, entrynodes,
  2101. excludenodes) after we've fetched a directory.
  2102. Changes in version 0.0.2pre22 - 2004-02-26
  2103. o New features:
  2104. - Servers publish less revealing uname information in descriptors.
  2105. - More memory tracking and assertions, to crash more usefully when
  2106. errors happen.
  2107. - If the default torrc isn't there, just use some default defaults.
  2108. Plus provide an internal dirservers file if they don't have one.
  2109. - When the user tries to use Tor as an http proxy, give them an http
  2110. 501 failure explaining that we're a socks proxy.
  2111. - Dump a new router.desc on hup, to help confused people who change
  2112. their exit policies and then wonder why router.desc doesn't reflect
  2113. it.
  2114. - Clean up the generic tor.sh init script that we ship with.
  2115. o Bugfixes:
  2116. - If the exit stream is pending on the resolve, and a destroy arrives,
  2117. then the stream wasn't getting removed from the pending list. I
  2118. think this was the one causing recent server crashes.
  2119. - Use a more robust poll on OSX 10.3, since their poll is flaky.
  2120. - When it couldn't resolve any dirservers, it was useless from then on.
  2121. Now it reloads the RouterFile (or default dirservers) if it has no
  2122. dirservers.
  2123. - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
  2124. many users don't even *have* a /usr/local/sbin/.
  2125. Changes in version 0.0.2pre21 - 2004-02-18
  2126. o New features:
  2127. - There's a ChangeLog file that actually reflects the changelog.
  2128. - There's a 'torify' wrapper script, with an accompanying
  2129. tor-tsocks.conf, that simplifies the process of using tsocks for
  2130. tor. It even has a man page.
  2131. - The tor binary gets installed to sbin rather than bin now.
  2132. - Retry streams where the connected cell hasn't arrived in 15 seconds
  2133. - Clean up exit policy handling -- get the default out of the torrc,
  2134. so we can update it without forcing each server operator to fix
  2135. his/her torrc.
  2136. - Allow imaps and pop3s in default exit policy
  2137. o Bugfixes:
  2138. - Prevent picking middleman nodes as the last node in the circuit
  2139. Changes in version 0.0.2pre20 - 2004-01-30
  2140. o New features:
  2141. - We now have a deb package, and it's in debian unstable. Go to
  2142. it, apt-getters. :)
  2143. - I've split the TotalBandwidth option into BandwidthRate (how many
  2144. bytes per second you want to allow, long-term) and
  2145. BandwidthBurst (how many bytes you will allow at once before the cap
  2146. kicks in). This better token bucket approach lets you, say, set
  2147. BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
  2148. performance while not exceeding your monthly bandwidth quota.
  2149. - Push out a tls record's worth of data once you've got it, rather
  2150. than waiting until you've read everything waiting to be read. This
  2151. may improve performance by pipelining better. We'll see.
  2152. - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
  2153. from failed circuits (if they haven't been connected yet) and attach
  2154. to new ones.
  2155. - Expire old streams that haven't managed to connect. Some day we'll
  2156. have them reattach to new circuits instead.
  2157. o Bugfixes:
  2158. - Fix several memory leaks that were causing servers to become bloated
  2159. after a while.
  2160. - Fix a few very rare assert triggers. A few more remain.
  2161. - Setuid to User _before_ complaining about running as root.
  2162. Changes in version 0.0.2pre19 - 2004-01-07
  2163. o Bugfixes:
  2164. - Fix deadlock condition in dns farm. We were telling a child to die by
  2165. closing the parent's file descriptor to him. But newer children were
  2166. inheriting the open file descriptor from the parent, and since they
  2167. weren't closing it, the socket never closed, so the child never read
  2168. eof, so he never knew to exit. Similarly, dns workers were holding
  2169. open other sockets, leading to all sorts of chaos.
  2170. - New cleaner daemon() code for forking and backgrounding.
  2171. - If you log to a file, it now prints an entry at the top of the
  2172. logfile so you know it's working.
  2173. - The onionskin challenge length was 30 bytes longer than necessary.
  2174. - Started to patch up the spec so it's not quite so out of date.
  2175. Changes in version 0.0.2pre18 - 2004-01-02
  2176. o Bugfixes:
  2177. - Fix endian issues with the 'integrity' field in the relay header.
  2178. - Fix a potential bug where connections in state
  2179. AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
  2180. Changes in version 0.0.2pre17 - 2003-12-30
  2181. o Bugfixes:
  2182. - Made --debuglogfile (or any second log file, actually) work.
  2183. - Resolved an edge case in get_unique_circ_id_by_conn where a smart
  2184. adversary could force us into an infinite loop.
  2185. o Features:
  2186. - Each onionskin handshake now includes a hash of the computed key,
  2187. to prove the server's identity and help perfect forward secrecy.
  2188. - Changed cell size from 256 to 512 bytes (working toward compatibility
  2189. with MorphMix).
  2190. - Changed cell length to 2 bytes, and moved it to the relay header.
  2191. - Implemented end-to-end integrity checking for the payloads of
  2192. relay cells.
  2193. - Separated streamid from 'recognized' (otherwise circuits will get
  2194. messed up when we try to have streams exit from the middle). We
  2195. use the integrity-checking to confirm that a cell is addressed to
  2196. this hop.
  2197. - Randomize the initial circid and streamid values, so an adversary who
  2198. breaks into a node can't learn how many circuits or streams have
  2199. been made so far.
  2200. Changes in version 0.0.2pre16 - 2003-12-14
  2201. o Bugfixes:
  2202. - Fixed a bug that made HUP trigger an assert
  2203. - Fixed a bug where a circuit that immediately failed wasn't being
  2204. counted as a failed circuit in counting retries.
  2205. o Features:
  2206. - Now we close the circuit when we get a truncated cell: otherwise we're
  2207. open to an anonymity attack where a bad node in the path truncates
  2208. the circuit and then we open streams at him.
  2209. - Add port ranges to exit policies
  2210. - Add a conservative default exit policy
  2211. - Warn if you're running tor as root
  2212. - on HUP, retry OR connections and close/rebind listeners
  2213. - options.EntryNodes: try these nodes first when picking the first node
  2214. - options.ExitNodes: if your best choices happen to include any of
  2215. your preferred exit nodes, you choose among just those preferred
  2216. exit nodes.
  2217. - options.ExcludedNodes: nodes that are never picked in path building
  2218. Changes in version 0.0.2pre15 - 2003-12-03
  2219. o Robustness and bugfixes:
  2220. - Sometimes clients would cache incorrect DNS resolves, which would
  2221. really screw things up.
  2222. - An OP that goes offline would slowly leak all its sockets and stop
  2223. working.
  2224. - A wide variety of bugfixes in exit node selection, exit policy
  2225. handling, and processing pending streams when a new circuit is
  2226. established.
  2227. - Pick nodes for a path only from those the directory says are up
  2228. - Choose randomly from all running dirservers, not always the first one
  2229. - Increase allowed http header size for directory fetch.
  2230. - Stop writing to stderr (if we're daemonized it will be closed).
  2231. - Enable -g always, so cores will be more useful to me.
  2232. - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
  2233. o Documentation:
  2234. - Wrote a man page. It lists commonly used options.
  2235. o Configuration:
  2236. - Change default loglevel to warn.
  2237. - Make PidFile default to null rather than littering in your CWD.
  2238. - OnionRouter config option is now obsolete. Instead it just checks
  2239. ORPort>0.
  2240. - Moved to a single unified torrc file for both clients and servers.
  2241. Changes in version 0.0.2pre14 - 2003-11-29
  2242. o Robustness and bugfixes:
  2243. - Force the admin to make the DataDirectory himself
  2244. - to get ownership/permissions right
  2245. - so clients no longer make a DataDirectory and then never use it
  2246. - fix bug where a client who was offline for 45 minutes would never
  2247. pull down a directory again
  2248. - fix (or at least hide really well) the dns assert bug that was
  2249. causing server crashes
  2250. - warnings and improved robustness wrt clockskew for certs
  2251. - use the native daemon(3) to daemonize, when available
  2252. - exit if bind() fails
  2253. - exit if neither socksport nor orport is defined
  2254. - include our own tor_timegm (Win32 doesn't have its own)
  2255. - bugfix for win32 with lots of connections
  2256. - fix minor bias in PRNG
  2257. - make dirserver more robust to corrupt cached directory
  2258. o Documentation:
  2259. - Wrote the design document (woo)
  2260. o Circuit building and exit policies:
  2261. - Circuits no longer try to use nodes that the directory has told them
  2262. are down.
  2263. - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
  2264. bitcounts (18.0.0.0/8).
  2265. - Make AP connections standby for a circuit if no suitable circuit
  2266. exists, rather than failing
  2267. - Circuits choose exit node based on addr/port, exit policies, and
  2268. which AP connections are standing by
  2269. - Bump min pathlen from 2 to 3
  2270. - Relay end cells have a payload to describe why the stream ended.
  2271. - If the stream failed because of exit policy, try again with a new
  2272. circuit.
  2273. - Clients have a dns cache to remember resolved addresses.
  2274. - Notice more quickly when we have no working circuits
  2275. o Configuration:
  2276. - APPort is now called SocksPort
  2277. - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
  2278. where to bind
  2279. - RecommendedVersions is now a config variable rather than
  2280. hardcoded (for dirservers)
  2281. - Reloads config on HUP
  2282. - Usage info on -h or --help
  2283. - If you set User and Group config vars, it'll setu/gid to them.
  2284. Changes in version 0.0.2pre13 - 2003-10-19
  2285. o General stability:
  2286. - SSL_write no longer fails when it returns WANTWRITE and the number
  2287. of bytes in the buf has changed by the next SSL_write call.
  2288. - Fix segfault fetching directory when network is down
  2289. - Fix a variety of minor memory leaks
  2290. - Dirservers reload the fingerprints file on HUP, so I don't have
  2291. to take down the network when I approve a new router
  2292. - Default server config file has explicit Address line to specify fqdn
  2293. o Buffers:
  2294. - Buffers grow and shrink as needed (Cut process size from 20M to 2M)
  2295. - Make listener connections not ever alloc bufs
  2296. o Autoconf improvements:
  2297. - don't clobber an external CFLAGS in ./configure
  2298. - Make install now works
  2299. - create var/lib/tor on make install
  2300. - autocreate a tor.sh initscript to help distribs
  2301. - autocreate the torrc and sample-server-torrc with correct paths
  2302. o Log files and Daemonizing now work:
  2303. - If --DebugLogFile is specified, log to it at -l debug
  2304. - If --LogFile is specified, use it instead of commandline
  2305. - If --RunAsDaemon is set, tor forks and backgrounds on startup