ChangeLog 13 KB

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  1. Changes in version 0.0.2 - 2004-03-19
  2. - Include strlcpy and strlcat for safer string ops
  3. - define INADDR_NONE so we compile (but still not run) on solaris
  4. Changes in version 0.0.2pre27 - 2004-03-14
  5. o Bugfixes:
  6. - Allow internal tor networks (we were rejecting internal IPs,
  7. now we allow them if they're set explicitly).
  8. - And fix a few endian issues.
  9. Changes in version 0.0.2pre26 - 2004-03-14
  10. o New features:
  11. - If a stream times out after 15s without a connected cell, don't
  12. try that circuit again: try a new one.
  13. - Retry streams at most 4 times. Then give up.
  14. - When a dirserver gets a descriptor from an unknown router, it
  15. logs its fingerprint (so the dirserver operator can choose to
  16. accept it even without mail from the server operator).
  17. - Inform unapproved servers when we reject their descriptors.
  18. - Make tor build on Windows again. It works as a client, who knows
  19. about as a server.
  20. - Clearer instructions in the torrc for how to set up a server.
  21. - Be more efficient about reading fd's when our global token bucket
  22. (used for rate limiting) becomes empty.
  23. o Bugfixes:
  24. - Stop asserting that computers always go forward in time. It's
  25. simply not true.
  26. - When we sent a cell (e.g. destroy) and then marked an OR connection
  27. expired, we might close it before finishing a flush if the other
  28. side isn't reading right then.
  29. - Don't allow dirservers to start if they haven't defined
  30. RecommendedVersions
  31. - We were caching transient dns failures. Oops.
  32. - Prevent servers from publishing an internal IP as their address.
  33. - Address a strcat vulnerability in circuit.c
  34. Changes in version 0.0.2pre25 - 2004-03-04
  35. o New features:
  36. - Put the OR's IP in its router descriptor, not its fqdn. That way
  37. we'll stop being stalled by gethostbyname for nodes with flaky dns,
  38. e.g. poblano.
  39. o Bugfixes:
  40. - If the user typed in an address that didn't resolve, the server
  41. crashed.
  42. Changes in version 0.0.2pre24 - 2004-03-03
  43. o Bugfixes:
  44. - Fix an assertion failure in dns.c, where we were trying to dequeue
  45. a pending dns resolve even if it wasn't pending
  46. - Fix a spurious socks5 warning about still trying to write after the connection is finished.
  47. - Hold certain marked_for_close connections open until they're finished
  48. flushing, rather than losing bytes by closing them too early.
  49. - Correctly report the reason for ending a stream
  50. - Remove some duplicate calls to connection_mark_for_close
  51. - Put switch_id and start_daemon earlier in the boot sequence, so it
  52. will actually try to chdir() to options.DataDirectory
  53. - Make 'make test' exit(1) if a test fails; fix some unit tests
  54. - Make tor fail when you use a config option it doesn't know about,
  55. rather than warn and continue.
  56. - Make --version work
  57. - Bugfixes on the rpm spec file and tor.sh, so it's more up to date
  58. Changes in version 0.0.2pre23 - 2004-02-29
  59. o New features:
  60. - Print a statement when the first circ is finished, so the user
  61. knows it's working.
  62. - If a relay cell is unrecognized at the end of the circuit,
  63. send back a destroy. (So attacks to mutate cells are more
  64. clearly thwarted.)
  65. - New config option 'excludenodes' to avoid certain nodes for circuits.
  66. - When it daemonizes, it chdir's to the DataDirectory rather than "/",
  67. so you can collect coredumps there.
  68. o Bugfixes:
  69. - Fix a bug in tls flushing where sometimes data got wedged and
  70. didn't flush until more data got sent. Hopefully this bug was
  71. a big factor in the random delays we were seeing.
  72. - Make 'connected' cells include the resolved IP, so the client
  73. dns cache actually gets populated.
  74. - Disallow changing from ORPort=0 to ORPort>0 on hup.
  75. - When we time-out on a stream and detach from the circuit, send an
  76. end cell down it first.
  77. - Only warn about an unknown router (in exitnodes, entrynodes,
  78. excludenodes) after we've fetched a directory.
  79. Changes in version 0.0.2pre22 - 2004-02-26
  80. o New features:
  81. - Servers publish less revealing uname information in descriptors.
  82. - More memory tracking and assertions, to crash more usefully when
  83. errors happen.
  84. - If the default torrc isn't there, just use some default defaults.
  85. Plus provide an internal dirservers file if they don't have one.
  86. - When the user tries to use Tor as an http proxy, give them an http
  87. 501 failure explaining that we're a socks proxy.
  88. - Dump a new router.desc on hup, to help confused people who change
  89. their exit policies and then wonder why router.desc doesn't reflect
  90. it.
  91. - Clean up the generic tor.sh init script that we ship with.
  92. o Bugfixes:
  93. - If the exit stream is pending on the resolve, and a destroy arrives,
  94. then the stream wasn't getting removed from the pending list. I
  95. think this was the one causing recent server crashes.
  96. - Use a more robust poll on OSX 10.3, since their poll is flaky.
  97. - When it couldn't resolve any dirservers, it was useless from then on.
  98. Now it reloads the RouterFile (or default dirservers) if it has no
  99. dirservers.
  100. - Move the 'tor' binary back to /usr/local/bin/ -- it turns out
  101. many users don't even *have* a /usr/local/sbin/.
  102. Changes in version 0.0.2pre21 - 2004-02-18
  103. o New features:
  104. - There's a ChangeLog file that actually reflects the changelog.
  105. - There's a 'torify' wrapper script, with an accompanying
  106. tor-tsocks.conf, that simplifies the process of using tsocks for
  107. tor. It even has a man page.
  108. - The tor binary gets installed to sbin rather than bin now.
  109. - Retry streams where the connected cell hasn't arrived in 15 seconds
  110. - Clean up exit policy handling -- get the default out of the torrc, so we can update it without forcing each server operator to fix
  111. his/her torrc.
  112. - Allow imaps and pop3s in default exit policy
  113. o Bugfixes:
  114. - Prevent picking middleman nodes as the last node in the circuit
  115. Changes in version 0.0.2pre20 - 2004-01-30
  116. o New features:
  117. - We now have a deb package, and it's in debian unstable. Go to
  118. it, apt-getters. :)
  119. - I've split the TotalBandwidth option into BandwidthRate (how many
  120. bytes per second you want to allow, long-term) and
  121. BandwidthBurst (how many bytes you will allow at once before the cap
  122. kicks in). This better token bucket approach lets you, say, set
  123. BandwidthRate to 10KB/s and BandwidthBurst to 10MB, allowing good
  124. performance while not exceeding your monthly bandwidth quota.
  125. - Push out a tls record's worth of data once you've got it, rather
  126. than waiting until you've read everything waiting to be read. This
  127. may improve performance by pipelining better. We'll see.
  128. - Add an AP_CONN_STATE_CONNECTING state, to allow streams to detach
  129. from failed circuits (if they haven't been connected yet) and attach
  130. to new ones.
  131. - Expire old streams that haven't managed to connect. Some day we'll
  132. have them reattach to new circuits instead.
  133. o Bugfixes:
  134. - Fix several memory leaks that were causing servers to become bloated
  135. after a while.
  136. - Fix a few very rare assert triggers. A few more remain.
  137. - Setuid to User _before_ complaining about running as root.
  138. Changes in version 0.0.2pre19 - 2004-01-07
  139. o Bugfixes:
  140. - Fix deadlock condition in dns farm. We were telling a child to die by
  141. closing the parent's file descriptor to him. But newer children were
  142. inheriting the open file descriptor from the parent, and since they
  143. weren't closing it, the socket never closed, so the child never read
  144. eof, so he never knew to exit. Similarly, dns workers were holding
  145. open other sockets, leading to all sorts of chaos.
  146. - New cleaner daemon() code for forking and backgrounding.
  147. - If you log to a file, it now prints an entry at the top of the
  148. logfile so you know it's working.
  149. - The onionskin challenge length was 30 bytes longer than necessary.
  150. - Started to patch up the spec so it's not quite so out of date.
  151. Changes in version 0.0.2pre18 - 2004-01-02
  152. o Bugfixes:
  153. - Fix endian issues with the 'integrity' field in the relay header.
  154. - Fix a potential bug where connections in state
  155. AP_CONN_STATE_CIRCUIT_WAIT might unexpectedly ask to write.
  156. Changes in version 0.0.2pre17 - 2003-12-30
  157. o Bugfixes:
  158. - Made --debuglogfile (or any second log file, actually) work.
  159. - Resolved an edge case in get_unique_circ_id_by_conn where a smart
  160. adversary could force us into an infinite loop.
  161. o Features:
  162. - Each onionskin handshake now includes a hash of the computed key,
  163. to prove the server's identity and help perfect forward secrecy.
  164. - Changed cell size from 256 to 512 bytes (working toward compatibility
  165. with MorphMix).
  166. - Changed cell length to 2 bytes, and moved it to the relay header.
  167. - Implemented end-to-end integrity checking for the payloads of
  168. relay cells.
  169. - Separated streamid from 'recognized' (otherwise circuits will get
  170. messed up when we try to have streams exit from the middle). We
  171. use the integrity-checking to confirm that a cell is addressed to
  172. this hop.
  173. - Randomize the initial circid and streamid values, so an adversary who
  174. breaks into a node can't learn how many circuits or streams have
  175. been made so far.
  176. Changes in version 0.0.2pre16 - 2003-12-14
  177. o Bugfixes:
  178. - Fixed a bug that made HUP trigger an assert
  179. - Fixed a bug where a circuit that immediately failed wasn't being
  180. counted as a failed circuit in counting retries.
  181. o Features:
  182. - Now we close the circuit when we get a truncated cell: otherwise we're
  183. open to an anonymity attack where a bad node in the path truncates
  184. the circuit and then we open streams at him.
  185. - Add port ranges to exit policies
  186. - Add a conservative default exit policy
  187. - Warn if you're running tor as root
  188. - on HUP, retry OR connections and close/rebind listeners
  189. - options.EntryNodes: try these nodes first when picking the first node
  190. - options.ExitNodes: if your best choices happen to include any of
  191. your preferred exit nodes, you choose among just those preferred
  192. exit nodes.
  193. - options.ExcludedNodes: nodes that are never picked in path building
  194. Changes in version 0.0.2pre15 - 2003-12-03
  195. o Robustness and bugfixes:
  196. - Sometimes clients would cache incorrect DNS resolves, which would
  197. really screw things up.
  198. - An OP that goes offline would slowly leak all its sockets and stop
  199. working.
  200. - A wide variety of bugfixes in exit node selection, exit policy
  201. handling, and processing pending streams when a new circuit is
  202. established.
  203. - Pick nodes for a path only from those the directory says are up
  204. - Choose randomly from all running dirservers, not always the first one
  205. - Increase allowed http header size for directory fetch.
  206. - Stop writing to stderr (if we're daemonized it will be closed).
  207. - Enable -g always, so cores will be more useful to me.
  208. - Switch "-lcrypto -lssl" to "-lssl -lcrypto" for broken distributions.
  209. o Documentation:
  210. - Wrote a man page. It lists commonly used options.
  211. o Configuration:
  212. - Change default loglevel to warn.
  213. - Make PidFile default to null rather than littering in your CWD.
  214. - OnionRouter config option is now obsolete. Instead it just checks
  215. ORPort>0.
  216. - Moved to a single unified torrc file for both clients and servers.
  217. Changes in version 0.0.2pre14 - 2003-11-29
  218. o Robustness and bugfixes:
  219. - Force the admin to make the DataDirectory himself
  220. - to get ownership/permissions right
  221. - so clients no longer make a DataDirectory and then never use it
  222. - fix bug where a client who was offline for 45 minutes would never
  223. pull down a directory again
  224. - fix (or at least hide really well) the dns assert bug that was
  225. causing server crashes
  226. - warnings and improved robustness wrt clockskew for certs
  227. - use the native daemon(3) to daemonize, when available
  228. - exit if bind() fails
  229. - exit if neither socksport nor orport is defined
  230. - include our own tor_timegm (Win32 doesn't have its own)
  231. - bugfix for win32 with lots of connections
  232. - fix minor bias in PRNG
  233. - make dirserver more robust to corrupt cached directory
  234. o Documentation:
  235. - Wrote the design document (woo)
  236. o Circuit building and exit policies:
  237. - Circuits no longer try to use nodes that the directory has told them
  238. are down.
  239. - Exit policies now support bitmasks (18.0.0.0/255.0.0.0) and
  240. bitcounts (18.0.0.0/8).
  241. - Make AP connections standby for a circuit if no suitable circuit
  242. exists, rather than failing
  243. - Circuits choose exit node based on addr/port, exit policies, and
  244. which AP connections are standing by
  245. - Bump min pathlen from 2 to 3
  246. - Relay end cells have a payload to describe why the stream ended.
  247. - If the stream failed because of exit policy, try again with a new
  248. circuit.
  249. - Clients have a dns cache to remember resolved addresses.
  250. - Notice more quickly when we have no working circuits
  251. o Configuration:
  252. - APPort is now called SocksPort
  253. - SocksBindAddress, ORBindAddress, DirBindAddress let you configure
  254. where to bind
  255. - RecommendedVersions is now a config variable rather than
  256. hardcoded (for dirservers)
  257. - Reloads config on HUP
  258. - Usage info on -h or --help
  259. - If you set User and Group config vars, it'll setu/gid to them.