commit c5c227e14032b195defd95aa92279c8a58f961b9 Author: Nick Mathewson <nickm@torproject.org> Date: Tue May 22 18:07:10 2018 -0400 copy changelog and releasenotes from 0.3.3.6 --- ChangeLog | 99 ++++++++++ ReleaseNotes | 635 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 734 insertions(+) diff --git a/ChangeLog b/ChangeLog index 54801b692..8cb911f8c 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,102 @@ +Changes in version 0.3.3.6 - 2018-05-22 + Tor 0.3.3.6 is the first stable release in the 0.3.3 series. It + backports several important fixes from the 0.3.4.1-alpha. + + The Tor 0.3.3 series includes controller support and other + improvements for v3 onion services, official support for embedding Tor + within other applications, and our first non-trivial module written in + the Rust programming language. (Rust is still not enabled by default + when building Tor.) And as usual, there are numerous other smaller + bugfixes, features, and improvements. + + Below are the changes since 0.3.3.5-rc. For a list of all changes + since 0.3.2.10, see the ReleaseNotes file. + + o Major bugfixes (directory authorities, security, backport from 0.3.4.1-alpha): + - When directory authorities read a zero-byte bandwidth file, they + would previously log a warning with the contents of an + uninitialised buffer. They now log a warning about the empty file + instead. Fixes bug 26007; bugfix on 0.2.2.1-alpha. + + o Major bugfixes (security, directory authority, denial-of-service): + - Fix a bug that could have allowed an attacker to force a directory + authority to use up all its RAM by passing it a maliciously + crafted protocol versions string. Fixes bug 25517; bugfix on + 0.2.9.4-alpha. This issue is also tracked as TROVE-2018-005. + + o Major bugfixes (crash, backport from 0.3.4.1-alpha): + - Avoid a rare assertion failure in the circuit build timeout code + if we fail to allow any circuits to actually complete. Fixes bug + 25733; bugfix on 0.2.2.2-alpha. + + o Major bugfixes (directory authorities, backport from 0.3.4.1-alpha): + - Avoid a crash when testing router reachability on a router that + could have an ed25519 ID, but which does not. Fixes bug 25415; + bugfix on 0.3.3.2-alpha. + + o Major bugfixes (onion service, backport from 0.3.4.1-alpha): + - Correctly detect when onion services get disabled after HUP. Fixes + bug 25761; bugfix on 0.3.2.1. + + o Major bugfixes (relay, denial of service, backport from 0.3.4.1-alpha): + - Impose a limit on circuit cell queue size. The limit can be + controlled by a consensus parameter. Fixes bug 25226; bugfix + on 0.2.4.14-alpha. + + o Minor features (compatibility, backport from 0.3.4.1-alpha): + - Avoid some compilation warnings with recent versions of LibreSSL. + Closes ticket 26006. + + o Minor features (continuous integration, backport from 0.3.4.1-alpha): + - Our .travis.yml configuration now includes support for testing the + results of "make distcheck". (It's not uncommon for "make check" + to pass but "make distcheck" to fail.) Closes ticket 25814. + - Our Travis CI configuration now integrates with the Coveralls + coverage analysis tool. Closes ticket 25818. + + o Minor features (geoip): + - Update geoip and geoip6 to the May 1 2018 Maxmind GeoLite2 Country + database. Closes ticket 26104. + + o Minor bugfixes (client, backport from 0.3.4.1-alpha): + - Don't consider Tor running as a client if the ControlPort is open, + but no actual client ports are open. Fixes bug 26062; bugfix + on 0.2.9.4-alpha. + + o Minor bugfixes (correctness, client, backport from 0.3.4.1-alpha): + - Upon receiving a malformed connected cell, stop processing the + cell immediately. Previously we would mark the connection for + close, but continue processing the cell as if the connection were + open. Fixes bug 26072; bugfix on 0.2.4.7-alpha. + + o Minor bugfixes (documentation, backport from 0.3.4.1-alpha): + - Stop saying in the manual that clients cache ipv4 dns answers from + exit relays. We haven't used them since 0.2.6.3-alpha, and in + ticket 24050 we stopped even caching them as of 0.3.2.6-alpha, but + we forgot to say so in the man page. Fixes bug 26052; bugfix + on 0.3.2.6-alpha. + + o Minor bugfixes (Linux seccomp2 sandbox, backport from 0.3.4.1-alpha): + - Allow the nanosleep() system call, which glibc uses to implement + sleep() and usleep(). Fixes bug 24969; bugfix on 0.2.5.1-alpha. + + o Minor bugfixes (onion service, backport from 0.3.4.1-alpha): + - Fix a memory leak when a v3 onion service is configured and gets a + SIGHUP signal. Fixes bug 25901; bugfix on 0.3.2.1-alpha. + - When parsing the descriptor signature, look for the token plus an + extra white-space at the end. This is more correct but also will + allow us to support new fields that might start with "signature". + Fixes bug 26069; bugfix on 0.3.0.1-alpha. + + o Minor bugfixes (relay, crash, backport from 0.3.4.1-alpha): + - Avoid a crash when running with DirPort set but ORPort tuned off. + Fixes a case of bug 23693; bugfix on 0.3.1.1-alpha. + + o Documentation (backport from 0.3.4.1-alpha): + - Correct an IPv6 error in the documentation for ExitPolicy. Closes + ticket 25857. Patch from "CTassisF". + + Changes in version 0.3.4.1-alpha - 2018-05-17 Tor 0.3.4.1-alpha is the first release in the 0.3.4.x series. It includes refactoring to begin reducing Tor's binary size and idle CPU diff --git a/ReleaseNotes b/ReleaseNotes index d36f87eea..89f107991 100644 --- a/ReleaseNotes +++ b/ReleaseNotes @@ -637,6 +637,641 @@ Changes in version 0.3.3.6 - 2018-05-22 ticket 25248. +Changes in version 0.3.3.6 - 2018-05-22 + Tor 0.3.3.6 is the first stable release in the 0.3.3 series. It + backports several important fixes from the 0.3.4.1-alpha. + + The Tor 0.3.3 series includes controller support and other + improvements for v3 onion services, official support for embedding Tor + within other applications, and our first non-trivial module written in + the Rust programming language. (Rust is still not enabled by default + when building Tor.) And as usual, there are numerous other smaller + bugfixes, features, and improvements. + + Below are the changes since 0.3.2.10. For a list of only the changes + since 0.3.3.5-rc, see the ChangeLog file. + + o New system requirements: + - When built with Rust, Tor now depends on version 0.2.39 of the + libc crate. Closes tickets 25310 and 25664. + + o Major features (embedding): + - There is now a documented stable API for programs that need to + embed Tor. See tor_api.h for full documentation and known bugs. + Closes ticket 23684. + - Tor now has support for restarting in the same process. + Controllers that run Tor using the "tor_api.h" interface can now + restart Tor after Tor has exited. This support is incomplete, + however: we fixed crash bugs that prevented it from working at + all, but many bugs probably remain, including a possibility of + security issues. Implements ticket 24581. + + o Major features (IPv6, directory documents): + - Add consensus method 27, which adds IPv6 ORPorts to the microdesc + consensus. This information makes it easier for IPv6 clients to + bootstrap and choose reachable entry guards. Implements + ticket 23826. + - Add consensus method 28, which removes IPv6 ORPorts from + microdescriptors. Now that the consensus contains IPv6 ORPorts, + they are redundant in microdescs. This change will be used by Tor + clients on 0.2.8.x and later. (That is to say, with all Tor + clients that have IPv6 bootstrap and guard support.) Implements + ticket 23828. + - Expand the documentation for AuthDirHasIPv6Connectivity when it is + set by different numbers of authorities. Fixes 23870 + on 0.2.4.1-alpha. + + o Major features (onion service v3, control port): + - The control port now supports commands and events for v3 onion + services. It is now possible to create ephemeral v3 services using + ADD_ONION. Additionally, several events (HS_DESC, HS_DESC_CONTENT, + CIRC and CIRC_MINOR) and commands (GETINFO, HSPOST, ADD_ONION and + DEL_ONION) have been extended to support v3 onion services. Closes + ticket 20699; implements proposal 284. + + o Major features (onion services): + - Provide torrc options to pin the second and third hops of onion + service circuits to a list of nodes. The option HSLayer2Guards + pins the second hop, and the option HSLayer3Guards pins the third + hop. These options are for use in conjunction with experiments + with "vanguards" for preventing guard enumeration attacks. Closes + ticket 13837. + - When v3 onion service clients send introduce cells, they now + include the IPv6 address of the rendezvous point, if it has one. + Current v3 onion services running 0.3.2 ignore IPv6 addresses, but + in future Tor versions, IPv6-only v3 single onion services will be + able to use IPv6 addresses to connect directly to the rendezvous + point. Closes ticket 23577. Patch by Neel Chauhan. + + o Major features (relay): + - Implement an option, ReducedExitPolicy, to allow an Tor exit relay + operator to use a more reasonable ("reduced") exit policy, rather + than the default one. If you want to run an exit node without + thinking too hard about which ports to allow, this one is for you. + Closes ticket 13605. Patch from Neel Chauhan. + + o Major features (rust, portability, experimental): + - Tor now ships with an optional implementation of one of its + smaller modules (protover.c) in the Rust programming language. To + try it out, install a Rust build environment, and configure Tor + with "--enable-rust --enable-cargo-online-mode". This should not + cause any user-visible changes, but should help us gain more + experience with Rust, and plan future Rust integration work. + Implementation by Chelsea Komlo. Closes ticket 22840. + + o Major bugfixes (directory authorities, security, backport from 0.3.4.1-alpha): + - When directory authorities read a zero-byte bandwidth file, they + would previously log a warning with the contents of an + uninitialised buffer. They now log a warning about the empty file + instead. Fixes bug 26007; bugfix on 0.2.2.1-alpha. + + o Major bugfixes (security, directory authority, denial-of-service): + - Fix a bug that could have allowed an attacker to force a directory + authority to use up all its RAM by passing it a maliciously + crafted protocol versions string. Fixes bug 25517; bugfix on + 0.2.9.4-alpha. This issue is also tracked as TROVE-2018-005. + + o Major bugfixes (crash, backport from 0.3.4.1-alpha): + - Avoid a rare assertion failure in the circuit build timeout code + if we fail to allow any circuits to actually complete. Fixes bug + 25733; bugfix on 0.2.2.2-alpha. + + o Major bugfixes (netflow padding): + - Stop adding unneeded channel padding right after we finish + flushing to a connection that has been trying to flush for many + seconds. Instead, treat all partial or complete flushes as + activity on the channel, which will defer the time until we need + to add padding. This fix should resolve confusing and scary log + messages like "Channel padding timeout scheduled 221453ms in the + past." Fixes bug 22212; bugfix on 0.3.1.1-alpha. + + o Major bugfixes (networking): + - Tor will no longer reject IPv6 address strings from Tor Browser + when they are passed as hostnames in SOCKS5 requests. Fixes bug + 25036, bugfix on Tor 0.3.1.2. + + o Major bugfixes (onion service, backport from 0.3.4.1-alpha): + - Correctly detect when onion services get disabled after HUP. Fixes + bug 25761; bugfix on 0.3.2.1. + + o Major bugfixes (performance, load balancing): + - Directory authorities no longer vote in favor of the Guard flag + for relays without directory support. Starting in Tor + 0.3.0.1-alpha, clients have been avoiding using such relays in the + Guard position, leading to increasingly broken load balancing for + the 5%-or-so of Guards that don't advertise directory support. + Fixes bug 22310; bugfix on 0.3.0.6. + + o Major bugfixes (relay): + - If we have failed to connect to a relay and received a connection + refused, timeout, or similar error (at the TCP level), do not try + that same address/port again for 60 seconds after the failure has + occurred. Fixes bug 24767; bugfix on 0.0.6. + + o Major bugfixes (relay, denial of service, backport from 0.3.4.1-alpha): + - Impose a limit on circuit cell queue size. The limit can be + controlled by a consensus parameter. Fixes bug 25226; bugfix + on 0.2.4.14-alpha. + + o Minor features (cleanup): + - Tor now deletes the CookieAuthFile and ExtORPortCookieAuthFile + when it stops. Closes ticket 23271. + + o Minor features (compatibility, backport from 0.3.4.1-alpha): + - Avoid some compilation warnings with recent versions of LibreSSL. + Closes ticket 26006. + + o Minor features (config options): + - Change the way the default value for MaxMemInQueues is calculated. + We now use 40% of the hardware RAM if the system has 8 GB RAM or + more. Otherwise we use the former value of 75%. Closes + ticket 24782. + + o Minor features (continuous integration): + - Update the Travis CI configuration to use the stable Rust channel, + now that we have decided to require that. Closes ticket 25714. + + o Minor features (continuous integration, backport from 0.3.4.1-alpha): + - Our .travis.yml configuration now includes support for testing the + results of "make distcheck". (It's not uncommon for "make check" + to pass but "make distcheck" to fail.) Closes ticket 25814. + - Our Travis CI configuration now integrates with the Coveralls + coverage analysis tool. Closes ticket 25818. + + o Minor features (defensive programming): + - Most of the functions in Tor that free objects have been replaced + with macros that free the objects and set the corresponding + pointers to NULL. This change should help prevent a large class of + dangling pointer bugs. Closes ticket 24337. + - Where possible, the tor_free() macro now only evaluates its input + once. Part of ticket 24337. + - Check that microdesc ed25519 ids are non-zero in + node_get_ed25519_id() before returning them. Implements ticket + 24001, patch by "aruna1234". + + o Minor features (directory authority): + - When directory authorities are unable to add signatures to a + pending consensus, log the reason why. Closes ticket 24849. + + o Minor features (embedding): + - Tor can now start with a preauthenticated control connection + created by the process that launched it. This feature is meant for + use by programs that want to launch and manage a Tor process + without allowing other programs to manage it as well. For more + information, see the __OwningControllerFD option documented in + control-spec.txt. Closes ticket 23900. + - On most errors that would cause Tor to exit, it now tries to + return from the tor_main() function, rather than calling the + system exit() function. Most users won't notice a difference here, + but it should be significant for programs that run Tor inside a + separate thread: they should now be able to survive Tor's exit + conditions rather than having Tor shut down the entire process. + Closes ticket 23848. + - Applications that want to embed Tor can now tell Tor not to + register any of its own POSIX signal handlers, using the + __DisableSignalHandlers option. Closes ticket 24588. + + o Minor features (fallback directory list): + - Avoid selecting fallbacks that change their IP addresses too + often. Select more fallbacks by ignoring the Guard flag, and + allowing lower cutoffs for the Running and V2Dir flags. Also allow + a lower bandwidth, and a higher number of fallbacks per operator + (5% of the list). Implements ticket 24785. + - Update the fallback whitelist and blacklist based on opt-ins and + relay changes. Closes tickets 22321, 24678, 22527, 24135, + and 24695. + + o Minor features (fallback directory mirror configuration): + - Add a nickname to each fallback in a C comment. This makes it + easier for operators to find their relays, and allows stem to use + nicknames to identify fallbacks. Implements ticket 24600. + - Add a type and version header to the fallback directory mirror + file. Also add a delimiter to the end of each fallback entry. This + helps external parsers like stem and Relay Search. Implements + ticket 24725. + - Add an extrainfo cache flag for each fallback in a C comment. This + allows stem to use fallbacks to fetch extra-info documents, rather + than using authorities. Implements ticket 22759. + - Add the generateFallbackDirLine.py script for automatically + generating fallback directory mirror lines from relay fingerprints. + No more typos! Add the lookupFallbackDirContact.py script for + automatically looking up operator contact info from relay + fingerprints. Implements ticket 24706, patch by teor and atagar. + - Reject any fallback directory mirror that serves an expired + consensus. Implements ticket 20942, patch by "minik". + - Remove commas and equals signs from external string inputs to the + fallback list. This avoids format confusion attacks. Implements + ticket 24726. + - Remove the "weight=10" line from fallback directory mirror + entries. Ticket 24681 will maintain the current fallback weights + by changing Tor's default fallback weight to 10. Implements + ticket 24679. + - Stop logging excessive information about fallback netblocks. + Implements ticket 24791. + + o Minor features (forward-compatibility): + - If a relay supports some link authentication protocol that we do + not recognize, then include that relay's ed25519 key when telling + other relays to extend to it. Previously, we treated future + versions as if they were too old to support ed25519 link + authentication. Closes ticket 20895. + + o Minor features (geoip): + - Update geoip and geoip6 to the May 1 2018 Maxmind GeoLite2 Country + database. Closes ticket 26104. + + o Minor features (heartbeat): + - Add onion service information to our heartbeat logs, displaying + stats about the activity of configured onion services. Closes + ticket 24896. + + o Minor features (instrumentation, development): + - Add the MainloopStats option to allow developers to get + instrumentation information from the main event loop via the + heartbeat messages. We hope to use this to improve Tor's behavior + when it's trying to sleep. Closes ticket 24605. + + o Minor features (IPv6): + - Make IPv6-only clients wait for microdescs for relays, even if we + were previously using descriptors (or were using them as a bridge) + and have a cached descriptor for them. Implements ticket 23827. + - When a consensus has IPv6 ORPorts, make IPv6-only clients use + them, rather than waiting to download microdescriptors. Implements + ticket 23827. + + o Minor features (log messages): + - Improve log message in the out-of-memory handler to include + information about memory usage from the different compression + backends. Closes ticket 25372. + - Improve a warning message that happens when we fail to re-parse an + old router because of an expired certificate. Closes ticket 20020. + - Make the log more quantitative when we hit MaxMemInQueues + threshold exposing some values. Closes ticket 24501. + + o Minor features (logging): + - Clarify the log messages produced when getrandom() or a related + entropy-generation mechanism gives an error. Closes ticket 25120. + - Added support for the Android logging subsystem. Closes + ticket 24362. + + o Minor features (performance): + - Support predictive circuit building for onion service circuits + with multiple layers of guards. Closes ticket 23101. + - Use stdatomic.h where available, rather than mutexes, to implement + atomic_counter_t. Closes ticket 23953. + + o Minor features (performance, 32-bit): + - Improve performance on 32-bit systems by avoiding 64-bit division + when calculating the timestamp in milliseconds for channel padding + computations. Implements ticket 24613. + - Improve performance on 32-bit systems by avoiding 64-bit division + when timestamping cells and buffer chunks for OOM calculations. + Implements ticket 24374. + + o Minor features (performance, OSX, iOS): + - Use the mach_approximate_time() function (when available) to + implement coarse monotonic time. Having a coarse time function + should avoid a large number of system calls, and improve + performance slightly, especially under load. Closes ticket 24427. + + o Minor features (performance, windows): + - Improve performance on Windows Vista and Windows 7 by adjusting + TCP send window size according to the recommendation from + SIO_IDEAL_SEND_BACKLOG_QUERY. Closes ticket 22798. Patch + from Vort. + + o Minor features (sandbox): + - Explicitly permit the poll() system call when the Linux + seccomp2-based sandbox is enabled: apparently, some versions of + libc use poll() when calling getpwnam(). Closes ticket 25313. + + o Minor features (storage, configuration): + - Users can store cached directory documents somewhere other than + the DataDirectory by using the CacheDirectory option. Similarly, + the storage location for relay's keys can be overridden with the + KeyDirectory option. Closes ticket 22703. + + o Minor features (testing): + - Add a "make test-rust" target to run the rust tests only. Closes + ticket 25071. + + o Minor features (testing, debugging, embedding): + - For development purposes, Tor now has a mode in which it runs for + a few seconds, then stops, and starts again without exiting the + process. This mode is meant to help us debug various issues with + ticket 23847. To use this feature, compile with + --enable-restart-debugging, and set the TOR_DEBUG_RESTART + environment variable. This is expected to crash a lot, and is + really meant for developers only. It will likely be removed in a + future release. Implements ticket 24583. + + o Minor bugfixes (build, rust): + - Fix output of autoconf checks to display success messages for Rust + dependencies and a suitable rustc compiler version. Fixes bug + 24612; bugfix on 0.3.1.3-alpha. + - Don't pass the --quiet option to cargo: it seems to suppress some + errors, which is not what we want to do when building. Fixes bug + 24518; bugfix on 0.3.1.7. + - Build correctly when building from outside Tor's source tree with + the TOR_RUST_DEPENDENCIES option set. Fixes bug 22768; bugfix + on 0.3.1.7. + + o Minor bugfixes (C correctness): + - Fix a very unlikely (impossible, we believe) null pointer + dereference. Fixes bug 25629; bugfix on 0.2.9.15. Found by + Coverity; this is CID 1430932. + + o Minor bugfixes (channel, client): + - Better identify client connection when reporting to the geoip + client cache. Fixes bug 24904; bugfix on 0.3.1.7. + + o Minor bugfixes (circuit, cannibalization): + - Don't cannibalize preemptively-built circuits if we no longer + recognize their first hop. This situation can happen if our Guard + relay went off the consensus after the circuit was created. Fixes + bug 24469; bugfix on 0.0.6. + + o Minor bugfixes (client, backport from 0.3.4.1-alpha): + - Don't consider Tor running as a client if the ControlPort is open, + but no actual client ports are open. Fixes bug 26062; bugfix + on 0.2.9.4-alpha. + + o Minor bugfixes (compilation): + - Fix a C99 compliance issue in our configuration script that caused + compilation issues when compiling Tor with certain versions of + xtools. Fixes bug 25474; bugfix on 0.3.2.5-alpha. + + o Minor bugfixes (controller): + - Restore the correct operation of the RESOLVE command, which had + been broken since we added the ability to enable/disable DNS on + specific listener ports. Fixes bug 25617; bugfix on 0.2.9.3-alpha. + - Avoid a (nonfatal) assertion failure when extending a one-hop + circuit from the controller to become a multihop circuit. Fixes + bug 24903; bugfix on 0.2.5.2-alpha. + + o Minor bugfixes (correctness): + - Remove a nonworking, unnecessary check to see whether a circuit + hop's identity digest was set when the circuit failed. Fixes bug + 24927; bugfix on 0.2.4.4-alpha. + + o Minor bugfixes (correctness, client, backport from 0.3.4.1-alpha): + - Upon receiving a malformed connected cell, stop processing the + cell immediately. Previously we would mark the connection for + close, but continue processing the cell as if the connection were + open. Fixes bug 26072; bugfix on 0.2.4.7-alpha. + + o Minor bugfixes (directory authorities, IPv6): + - When creating a routerstatus (vote) from a routerinfo (descriptor), + set the IPv6 address to the unspecified IPv6 address, and + explicitly initialize the port to zero. Fixes bug 24488; bugfix + on 0.2.4.1-alpha. + + o Minor bugfixes (documentation): + - Document that the PerConnBW{Rate,Burst} options will fall back to + their corresponding consensus parameters only if those parameters + are set. Previously we had claimed that these values would always + be set in the consensus. Fixes bug 25296; bugfix on 0.2.2.7-alpha. + + o Minor bugfixes (documentation, backport from 0.3.4.1-alpha): + - Stop saying in the manual that clients cache ipv4 dns answers from + exit relays. We haven't used them since 0.2.6.3-alpha, and in + ticket 24050 we stopped even caching them as of 0.3.2.6-alpha, but + we forgot to say so in the man page. Fixes bug 26052; bugfix + on 0.3.2.6-alpha. + + o Minor bugfixes (exit relay DNS retries): + - Re-attempt timed-out DNS queries 3 times before failure, since our + timeout is 5 seconds for them, but clients wait 10-15. Also allow + slightly more timeouts per resolver when an exit has multiple + resolvers configured. Fixes bug 21394; bugfix on 0.3.1.9. + + o Minor bugfixes (fallback directory mirrors): + - Make updateFallbackDirs.py search harder for python. (Some OSs + don't put it in /usr/bin.) Fixes bug 24708; bugfix + on 0.2.8.1-alpha. + + o Minor bugfixes (hibernation, bandwidth accounting, shutdown): + - When hibernating, close connections normally and allow them to + flush. Fixes bug 23571; bugfix on 0.2.4.7-alpha. Also fixes + bug 7267. + - Do not attempt to launch self-reachability tests when entering + hibernation. Fixes a case of bug 12062; bugfix on 0.0.9pre5. + - Resolve several bugs related to descriptor fetching on bridge + clients with bandwidth accounting enabled. (This combination is + not recommended!) Fixes a case of bug 12062; bugfix + on 0.2.0.3-alpha. + - When hibernating, do not attempt to launch DNS checks. Fixes a + case of bug 12062; bugfix on 0.1.2.2-alpha. + - When hibernating, do not try to upload or download descriptors. + Fixes a case of bug 12062; bugfix on 0.0.9pre5. + + o Minor bugfixes (IPv6, bridges): + - Tor now always sets IPv6 preferences for bridges. Fixes bug 24573; + bugfix on 0.2.8.2-alpha. + - Tor now sets IPv6 address in the routerstatus as well as in the + router descriptors when updating addresses for a bridge. Closes + ticket 24572; bugfix on 0.2.4.5-alpha. Patch by "ffmancera". + + o Minor bugfixes (Linux seccomp2 sandbox): + - When running with the sandbox enabled, reload configuration files + correctly even when %include was used. Previously we would crash. + Fixes bug 22605; bugfix on 0.3.1. Patch from Daniel Pinto. + + o Minor bugfixes (Linux seccomp2 sandbox, backport from 0.3.4.1-alpha): + - Allow the nanosleep() system call, which glibc uses to implement + sleep() and usleep(). Fixes bug 24969; bugfix on 0.2.5.1-alpha. + + o Minor bugfixes (logging): + - Fix a (mostly harmless) race condition when invoking + LOG_PROTOCOL_WARN message from a subthread while the torrc options + are changing. Fixes bug 23954; bugfix on 0.1.1.9-alpha. + + o Minor bugfixes (man page, SocksPort): + - Remove dead code from the old "SocksSocket" option, and rename + SocksSocketsGroupWritable to UnixSocksGroupWritable. The old + option still works, but is deprecated. Fixes bug 24343; bugfix + on 0.2.6.3. + + o Minor bugfixes (memory leaks): + - Avoid possible at-exit memory leaks related to use of Libevent's + event_base_once() function. (This function tends to leak memory if + the event_base is closed before the event fires.) Fixes bug 24584; + bugfix on 0.2.8.1-alpha. + - Fix a harmless memory leak in tor-resolve. Fixes bug 24582; bugfix + on 0.2.1.1-alpha. + + o Minor bugfixes (network IPv6 test): + - Tor's test scripts now check if "ping -6 ::1" works when the user + runs "make test-network-all". Fixes bug 24677; bugfix on + 0.2.9.3-alpha. Patch by "ffmancera". + + o Minor bugfixes (networking): + - string_is_valid_hostname() will not consider IP strings to be + valid hostnames. Fixes bug 25055; bugfix on Tor 0.2.5.5. + + o Minor bugfixes (onion service v3): + - Avoid an assertion failure when the next onion service descriptor + rotation type is out of sync with the consensus's valid-after + time. Instead, log a warning message with extra information, so we + can better hunt down the cause of this assertion. Fixes bug 25306; + bugfix on 0.3.2.1-alpha. + + o Minor bugfixes (onion service, backport from 0.3.4.1-alpha): + - Fix a memory leak when a v3 onion service is configured and gets a + SIGHUP signal. Fixes bug 25901; bugfix on 0.3.2.1-alpha. + - When parsing the descriptor signature, look for the token plus an + extra white-space at the end. This is more correct but also will + allow us to support new fields that might start with "signature". + Fixes bug 26069; bugfix on 0.3.0.1-alpha. + + o Minor bugfixes (onion services): + - If we are configured to offer a single onion service, don't log + long-term established one hop rendezvous points in the heartbeat. + Fixes bug 25116; bugfix on 0.2.9.6-rc. + + o Minor bugfixes (performance): + - Reduce the number of circuits that will be opened at once during + the circuit build timeout phase. This is done by increasing the + idle timeout to 3 minutes, and lowering the maximum number of + concurrent learning circuits to 10. Fixes bug 24769; bugfix + on 0.3.1.1-alpha. + - Avoid calling protocol_list_supports_protocol() from inside tight + loops when running with cached routerinfo_t objects. Instead, + summarize the relevant protocols as flags in the routerinfo_t, as + we do for routerstatus_t objects. This change simplifies our code + a little, and saves a large amount of short-term memory allocation + operations. Fixes bug 25008; bugfix on 0.2.9.4-alpha. + + o Minor bugfixes (performance, timeouts): + - Consider circuits for timeout as soon as they complete a hop. This + is more accurate than applying the timeout in + circuit_expire_building() because that function is only called + once per second, which is now too slow for typical timeouts on the + current network. Fixes bug 23114; bugfix on 0.2.2.2-alpha. + - Use onion service circuits (and other circuits longer than 3 hops) + to calculate a circuit build timeout. Previously, Tor only + calculated its build timeout based on circuits that planned to be + exactly 3 hops long. With this change, we include measurements + from all circuits at the point where they complete their third + hop. Fixes bug 23100; bugfix on 0.2.2.2-alpha. + + o Minor bugfixes (relay, crash, backport from 0.3.4.1-alpha): + - Avoid a crash when running with DirPort set but ORPort tuned off. + Fixes a case of bug 23693; bugfix on 0.3.1.1-alpha. + + o Minor bugfixes (Rust FFI): + - Fix a minor memory leak which would happen whenever the C code + would call the Rust implementation of + protover_get_supported_protocols(). This was due to the C version + returning a static string, whereas the Rust version newly allocated + a CString to pass accross the FFI boundary. Consequently, the C + code was not expecting to need to free() what it was given. Fixes + bug 25127; bugfix on 0.3.2.1-alpha. + + o Minor bugfixes (spelling): + - Use the "misspell" tool to detect and fix typos throughout the + source code. Fixes bug 23650; bugfix on various versions of Tor. + Patch from Deepesh Pathak. + + o Minor bugfixes (testing): + - Avoid intermittent test failures due to a test that had relied on + onion service introduction point creation finishing within 5 + seconds of real clock time. Fixes bug 25450; bugfix + on 0.3.1.3-alpha. + - Give out Exit flags in bootstrapping networks. Fixes bug 24137; + bugfix on 0.2.3.1-alpha. + + o Minor bugfixes (unit test, monotonic time): + - Increase a constant (1msec to 10msec) in the monotonic time test + that makes sure the nsec/usec/msec times read are synchronized. + This change was needed to accommodate slow systems like armel or + when the clock_gettime() is not a VDSO on the running kernel. + Fixes bug 25113; bugfix on 0.2.9.1. + + o Code simplification and refactoring: + - Move the list of default directory authorities to its own file. + Closes ticket 24854. Patch by "beastr0". + - Remove the old (deterministic) directory retry logic entirely: + We've used exponential backoff exclusively for some time. Closes + ticket 23814. + - Remove the unused nodelist_recompute_all_hsdir_indices(). Closes + ticket 25108. + - Remove a series of counters used to track circuit extend attempts + and connection status but that in reality we aren't using for + anything other than stats logged by a SIGUSR1 signal. Closes + ticket 25163. + - Remove /usr/athena from search path in configure.ac. Closes + ticket 24363. + - Remove duplicate code in node_has_curve25519_onion_key() and + node_get_curve25519_onion_key(), and add a check for a zero + microdesc curve25519 onion key. Closes ticket 23966, patch by + "aruna1234" and teor. + - Rewrite channel_rsa_id_group_set_badness to reduce temporary + memory allocations with large numbers of OR connections (e.g. + relays). Closes ticket 24119. + - Separate the function that deletes ephemeral files when Tor + stops gracefully. + - Small changes to Tor's buf_t API to make it suitable for use as a + general-purpose safe string constructor. Closes ticket 22342. + - Switch -Wnormalized=id to -Wnormalized=nfkc in configure.ac to + avoid source code identifier confusion. Closes ticket 24467. + - The tor_git_revision[] constant no longer needs to be redeclared + by everything that links against the rest of Tor. Done as part of + ticket 23845, to simplify our external API. + - We make extend_info_from_node() use node_get_curve25519_onion_key() + introduced in ticket 23577 to access the curve25519 public keys + rather than accessing it directly. Closes ticket 23760. Patch by + Neel Chauhan. + - Add a function to log channels' scheduler state changes to aid + debugging efforts. Closes ticket 24531. + + o Documentation: + - Improved the documentation of AccountingStart parameter. Closes + ticket 23635. + - Update the documentation for "Log" to include the current list of + logging domains. Closes ticket 25378. + - Add documentation on how to build tor with Rust dependencies + without having to be online. Closes ticket 22907; bugfix + on 0.3.0.3-alpha. + - Clarify the behavior of RelayBandwidth{Rate,Burst} with client + traffic. Closes ticket 24318. + - Document that OutboundBindAddress doesn't apply to DNS requests. + Closes ticket 22145. Patch from Aruna Maurya. + + o Code simplification and refactoring (channels): + - Remove the incoming and outgoing channel queues. These were never + used, but still took up a step in our fast path. + - The majority of the channel unit tests have been rewritten and the + code coverage has now been raised to 83.6% for channel.c. Closes + ticket 23709. + - Remove other dead code from the channel subsystem: All together, + this cleanup has removed more than 1500 lines of code overall and + adding very little except for unit test. + + o Code simplification and refactoring (circuit rendezvous): + - Split the client-side rendezvous circuit lookup into two + functions: one that returns only established circuits and another + that returns all kinds of circuits. Closes ticket 23459. + + o Code simplification and refactoring (controller): + - Make most of the variables in networkstatus_getinfo_by_purpose() + const. Implements ticket 24489. + + o Documentation (backport from 0.3.4.1-alpha): + - Correct an IPv6 error in the documentation for ExitPolicy. Closes + ticket 25857. Patch from "CTassisF". + + o Documentation (man page): + - The HiddenServiceVersion torrc option accepts only one number: + either version 2 or 3. Closes ticket 25026; bugfix + on 0.3.2.2-alpha. + + o Documentation (manpage, denial of service): + - Provide more detail about the denial-of-service options, by + listing each mitigation and explaining how they relate. Closes + ticket 25248. + + Changes in version 0.3.1.10 - 2018-03-03 Tor 0.3.1.10 backports a number of bugfixes, including important fixes for security issues.