commit 0b889e709d8272327af116c2cd88d7ae11c01e21 Author: Nick Mathewson nickm@torproject.org Date: Tue Jun 16 17:52:45 2020 -0400

forward-port the changelog for 0.4.4.1-alpha --- ChangeLog | 313 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 313 insertions(+)

diff --git a/ChangeLog b/ChangeLog index 9ddbfa95f..1f02c6533 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,316 @@ +Changes in version 0.4.4.1-alpha - 2020-06-16 + This is the first alpha release in the 0.4.4.x series. It improves + our guard selection algorithms, improves the amount of code that + can be disabled when running without relay support, and includes numerous + small bugfixes and enhancements. It also lays the ground for some IPv6 + features that we'll be developing more in the next (0.4.5) series. + + Here are the changes since 0.4.3.5. + + o Major features (Proposal 310, performance + security): + - Implements Proposal 310, "Bandaid on guard selection". Proposal + 310 solves load-balancing issues with older versions of the guard + selection algorithm, and improves its security. Under this new + algorithm, a newly selected guard never becomes Primary unless all + previously sampled guards are unreachable. Implements + recommendation from 32088. (Proposal 310 is linked to the CLAPS + project researching optimal client location-aware path selections. + This project is a collaboration between the UCLouvain Crypto Group, + the U.S. Naval Research Laboratory, and Princeton University.) + + o Major features (IPv6, relay): + - Consider IPv6-only EXTEND2 cells valid on relays. Log a protocol + warning if the IPv4 or IPv6 address is an internal address, and + internal addresses are not allowed. But continue to use the other + address, if it is valid. Closes ticket 33817. + - If a relay can extend over IPv4 and IPv6, and both addresses are + provided, it chooses between them uniformly at random. Closes + ticket 33817. + - Re-use existing IPv6 connections for circuit extends. Closes + ticket 33817. + - Relays may extend circuits over IPv6, if the relay has an IPv6 + ORPort, and the client supplies the other relay's IPv6 ORPort in + the EXTEND2 cell. IPv6 extends will be used by the relay IPv6 + ORPort self-tests in 33222. Closes ticket 33817. + + o Major features (v3 onion services): + - Allow v3 onion services to act as OnionBalance backend instances, + by using the HiddenServiceOnionBalanceInstance torrc option. + Closes ticket 32709. + + o Minor feature (developer tools): + - Add a script to help check the alphabetical ordering of option + names in the manual page. Closes ticket 33339. + + o Minor feature (onion service client, SOCKS5): + - Add 3 new SocksPort ExtendedErrors (F2, F3, F7) that reports back + new type of onion service connection failures. The semantics of + these error codes are documented in proposal 309. Closes + ticket 32542. + + o Minor feature (onion service v3): + - If a service cannot upload its descriptor(s), log why at INFO + level. Closes ticket 33400; bugfix on 0.3.2.1-alpha. + + o Minor feature (python scripts): + - Stop assuming that /usr/bin/python exists. Instead of using a + hardcoded path in scripts that still use Python 2, use + /usr/bin/env, similarly to the scripts that use Python 3. Fixes + bug 33192; bugfix on 0.4.2. + + o Minor features (client-only compilation): + - Disable more code related to the ext_orport protocol when + compiling without support for relay mode. Closes ticket 33368. + - Disable more of our self-testing code when support for relay mode + is disabled. Closes ticket 33370. + + o Minor features (code safety): + - Check for failures of tor_inet_ntop() and tor_inet_ntoa() + functions in DNS and IP address processing code, and adjust + codepaths to make them less likely to crash entire Tor instances. + Resolves issue 33788. + + o Minor features (compilation size): + - Most server-side DNS code is now disabled when building without + support for relay mode. Closes ticket 33366. + + o Minor features (continuous integration): + - Run unit-test and integration test (Stem, Chutney) jobs with + ALL_BUGS_ARE_FATAL macro being enabled on Travis and Appveyor. + Resolves ticket 32143. + + o Minor features (control port): + - Return a descriptive error message from the 'GETINFO status/fresh- + relay-descs' command on the control port. Previously, we returned + a generic error of "Error generating descriptor". Closes ticket + 32873. Patch by Neel Chauhan. + + o Minor features (developer tooling): + - Refrain from listing all .a files that are generated by the Tor + build in .gitignore. Add a single wildcard *.a entry that covers + all of them for present and future. Closes ticket 33642. + - Add a script ("git-install-tools.sh") to install git hooks and + helper scripts. Closes ticket 33451. + + o Minor features (directory authority, shared random): + - Refactor more authority-only parts of the shared-random scheduling + code to reside in the dirauth module, and to be disabled when + compiling with --disable-module-dirauth. Closes ticket 33436. + + o Minor features (directory): + - Remember the number of bytes we have downloaded for each directory + purpose while bootstrapping, and while fully bootstrapped. Log + this information as part of the heartbeat message. Closes + ticket 32720. + + o Minor features (IPv6 support): + - Adds IPv6 support to tor_addr_is_valid(). Adds tests for the above + changes and tor_addr_is_null(). Closes ticket 33679. Patch + by MrSquanchee. + - Allow clients and relays to send dual-stack and IPv6-only EXTEND2 + cells. Parse dual-stack and IPv6-only EXTEND2 cells on relays. + Closes ticket 33901. + + o Minor features (logging): + - When trying to find our own address, add debug-level logging to + report the sources of candidate addresses. Closes ticket 32888. + + o Minor features (testing, architecture): + - Our test scripts now double-check that subsystem initialization + order is consistent with the inter-module dependencies established + by our .may_include files. Implements ticket 31634. + - Initialize all subsystems at the beginning of our unit test + harness, to avoid crashes due to uninitialized subsystems. Follow- + up from ticket 33316. + + o Minor features (v3 onion services): + - Add v3 onion service status to the dumpstats() call which is + triggered by a SIGUSR1 signal. Previously, we only did v2 onion + services. Closes ticket 24844. Patch by Neel Chauhan. + + o Minor features (windows): + - Add support for console control signals like Ctrl+C in Windows. + Closes ticket 34211. Patch from Damon Harris (TheDcoder). + + o Minor bugfix (onion service v3): + - Prevent an assert() that would occur when cleaning the client + descriptor cache, and attempting to close circuits for a non- + decrypted descriptor (lacking client authorization). Fixes bug + 33458; bugfix on 0.4.2.1-alpha. + + o Minor bugfix (refactoring): + - Lift circuit_build_times_disabled() out of the + circuit_expire_building() loop, to save CPU time when there are + many circuits open. Fixes bug 33977; bugfix on 0.3.5.9. + + o Minor bugfixes (client performance): + - Resume use of preemptively-built circuits when UseEntryGuards is set + to 0. We accidentally disabled this feature with that config + setting, leading to slower load times. Fixes bug 34303; bugfix + on 0.3.3.2-alpha. + + o Minor bugfixes (directory authorities): + - Directory authorities now reject votes that arrive too late. In + particular, once an authority has started fetching missing votes, + it no longer accepts new votes posted by other authorities. This + change helps prevent a consensus split, where only some authorities + have the late vote. Fixes bug 4631; bugfix on 0.2.0.5-alpha. + + o Minor bugfixes (git scripts): + - Stop executing the checked-out pre-commit hook from the pre-push + hook. Instead, execute the copy in the user's git directory. Fixes + bug 33284; bugfix on 0.4.1.1-alpha. + + o Minor bugfixes (initialization): + - Initialize the subsystems in our code in an order more closely + corresponding to their dependencies, so that every system is + initialized before the ones that (theoretically) depend on it. + Fixes bug 33316; bugfix on 0.4.0.1-alpha. + + o Minor bugfixes (IPv4, relay): + - Check for invalid zero IPv4 addresses and ports when sending and + receiving extend cells. Fixes bug 33900; bugfix on 0.2.4.8-alpha. + + o Minor bugfixes (IPv6, relay): + - Consider IPv6 addresses when checking if a connection is + canonical. In 17604, relays assumed that a remote relay could + consider an IPv6 connection canonical, but did not set the + canonical flag on their side of the connection. Fixes bug 33899; + bugfix on 0.3.1.1-alpha. + - Log IPv6 addresses on connections where this relay is the + responder. Previously, responding relays would replace the remote + IPv6 address with the IPv4 address from the consensus. Fixes bug + 33899; bugfix on 0.3.1.1-alpha. + + o Minor bugfixes (linux seccomp sandbox nss): + - Fix a startup crash when tor is compiled with --enable-nss and + sandbox support is enabled. Fixes bug 34130; bugfix on + 0.3.5.1-alpha. Patch by Daniel Pinto. + + o Minor bugfixes (logging, testing): + - Make all of tor's assertion macros support the ALL_BUGS_ARE_FATAL + and DISABLE_ASSERTS_IN_UNIT_TESTS debugging modes. (IF_BUG_ONCE() + used to log a non-fatal warning, regardless of the debugging + mode.) Fixes bug 33917; bugfix on 0.2.9.1-alpha. + + o Minor bugfixes (logs): + - Remove surprising empty line in the INFO-level log about circuit + build timeout. Fixes bug 33531; bugfix on 0.3.3.1-alpha. + + o Minor bugfixes (mainloop): + - Better guard against growing a buffer past its maximum 2GB in + size. Fixes bug 33131; bugfix on 0.3.0.4-rc. + + o Minor bugfixes (manual page): + - Update the man page to reflect that MinUptimeHidServDirectoryV2 + defaults to 96 hours. Fixes bug 34299; bugfix on 0.2.6.3-alpha. + + o Minor bugfixes (onion service v3, client): + - Remove a BUG() that was causing a stacktrace when a descriptor + changed at an unexpected time. Fixes bug 28992; bugfix + on 0.3.2.1-alpha. + + o Minor bugfixes (onion service, logging): + - Fix a typo in a log message PublishHidServDescriptors is set to 0. + Fixes bug 33779; bugfix on 0.3.2.1-alpha. + + o Minor bugfixes (portability): + - Fix a portability error in the configure script, where we were + using "==" instead of "=". Fixes bug 34233; bugfix on 0.4.3.5. + + o Minor bugfixes (protocol versions): + - Sort tor's supported protocol version lists, as recommended by the + tor directory specification. Fixes bug 33285; bugfix + on 0.4.0.1-alpha. + + o Minor bugfixes (relays): + - Stop advertising incorrect IPv6 ORPorts in relay and bridge + descriptors, when the IPv6 port was configured as "auto". Fixes + bug 32588; bugfix on 0.2.3.9-alpha. + + o Code simplification and refactoring: + - Define and use a new constant TOR_ADDRPORT_BUF_LEN which is like + TOR_ADDR_BUF_LEN but includes enough space for an IP address, + brackets, separating colon, and port number. Closes ticket 33956. + Patch by Neel Chauhan. + - Merge the orconn and ocirc events into the "core" subsystem, which + manages or connections and origin circuits. Previously they were + isolated in subsystems of their own. + - Move LOG_PROTOCOL_WARN to app/config. Resolves a dependency + inversion. Closes ticket 33633. + - Move the circuit extend code to the relay module. Split the + circuit extend function into smaller functions. Closes + ticket 33633. + - Rewrite port_parse_config() to use the default port flags from + port_cfg_new(). Closes ticket 32994. Patch by MrSquanchee. + - Updated comments in 'scheduler.c' to reflect old code changes, and + simplified the scheduler channel state change code. Closes + ticket 33349. + + o Documentation: + - Document the limitations of using %include on config files with + seccomp sandbox enabled. Fixes documentation bug 34133; bugfix on + 0.3.1.1-alpha. Patch by Daniel Pinto. + - Fix several doxygen warnings related to imbalanced groups. Closes + ticket 34255. + + o Removed features: + - Remove the ClientAutoIPv6ORPort option. This option attempted to + randomly choose between IPv4 and IPv6 for client connections, and + wasn't a true implementation of Happy Eyeballs. Often, this option + failed on IPv4-only or IPv6-only connections. Closes ticket 32905. + Patch by Neel Chauhan. + - Stop shipping contrib/dist/rc.subr file, as it is not being used + on FreeBSD anymore. Closes issue 31576. + + o Testing: + - Add a basic IPv6 test to "make test-network". This test only runs + when the local machine has an IPv6 stack. Closes ticket 33300. + - Add test-network-ipv4 and test-network-ipv6 jobs to the Makefile. + These jobs run the IPv4-only and dual-stack chutney flavours from + test-network-all. Closes ticket 33280. + - Remove a redundant distcheck job. Closes ticket 33194. + - Run the test-network-ipv6 Makefile target in the Travis CI IPv6 + chutney job. This job runs on macOS, so it's a bit slow. Closes + ticket 33303. + - Sort the Travis jobs in order of speed. Putting the slowest jobs + first takes full advantage of Travis job concurrency. Closes + ticket 33194. + - Stop allowing the Chutney IPv6 Travis job to fail. This job was + previously configured to fast_finish (which requires + allow_failure), to speed up the build. Closes ticket 33195. + - Test v3 onion services to tor's mixed IPv4 chutney network. And + add a mixed IPv6 chutney network. These networks are used in the + test-network-all, test-network-ipv4, and test-network-ipv6 make + targets. Closes ticket 33334. + - Use the "bridges+hs-v23" chutney network flavour in "make test- + network". This test requires a recent version of chutney (mid- + February 2020). Closes ticket 28208. + - When a Travis chutney job fails, use chutney's new "diagnostics.sh" + tool to produce detailed diagnostic output. Closes ticket 32792. + + o Code simplification and refactoring (onion service): + - Refactor configuration parsing to use the new config subsystem + code. Closes ticket 33014. + + o Code simplification and refactoring (relay address): + - Move a series of functions related to address resolving into their + own files. Closes ticket 33789. + + o Documentation (manual page): + - Add cross reference links and a table of contents to the HTML tor + manual page. Closes ticket 33369. Work by Swati Thacker as part of + Google Season of Docs. + - Alphabetize the Denial of Service Mitigation Options, Directory + Authority Server Options, Hidden Service Options, and Testing + Network Options sections of the tor(1) manual page. Closes ticket + 33275. Work by Swati Thacker as part of Google Season of Docs. + - Refrain from mentioning nicknames in manpage section for MyFamily + torrc option. Resolves issue 33417. + - Updated the options set by TestingTorNetwork in the manual page. + Closes ticket 33778. + + Changes in version 0.4.3.5 - 2020-05-15 Tor 0.4.3.5 is the first stable release in the 0.4.3.x series. This series adds support for building without relay code enabled, and