New Release: Tor 0.3.4.7-rc

There's a new release candidate available for download. If you build Tor from source, you can download the source code for Tor 0.3.4.6-rc from the download page on the website. Packages should be available over the coming weeks, with a new alpha Tor Browser release in the coming weeks.

Remember, this is an not yet a stable release: you should only run this if you'd like to find and report more bugs than usual.

Tor 0.3.4.7-rc fixes several small compilation, portability, and correctness issues in previous versions of Tor. This version is a release candidate: if no serious bugs are found, we expect that the stable 0.3.4 release will be (almost) the same as this release.

Changes in version 0.3.4.7-rc - 2018-08-24

• Minor features (bug workaround):
  • Compile correctly on systems that provide the C11 stdatomic.h header, but where C11 atomic functions don't actually compile. Closes ticket 26779; workaround for Debian issue 903709.
• Minor features (continuous integration):
  • Backport Travis rust distcheck to 0.3.3. Closes ticket 24629.
  • Enable macOS builds in our Travis CI configuration. Closes ticket 24629.
  • Install libcap-dev and libseccomp2-dev so these optional dependencies get tested on Travis CI. Closes ticket 26560.
  • Only post Appveyor IRC notifications when the build fails. Implements ticket 27275.
  • Run asciidoc during Travis CI. Implements ticket 27087.
  • Use ccache in our Travis CI configuration. Closes ticket 26952.

• Minor features (continuous integration, rust):
  • Use cargo cache in our Travis CI configuration. Closes ticket 26952.
• Minor features (directory authorities):
  • Authorities no longer vote to make the subprotocol version "LinkAuth=1" a requirement: it is unsupportable with NSS, and hasn't been needed since Tor 0.3.0.1-alpha. Closes ticket 27286.
• Minor features (geoip):
  • Update geoip and geoip6 to the August 7 2018 Maxmind GeoLite2 Country database. Closes ticket 27089.
• Minor bugfixes (compilation, windows):
  • Don't link or search for pthreads when building for Windows, even if we are using build environment (like mingw) that provides a pthreads library. Fixes bug 27081; bugfix on 0.1.0.1-rc.
• Minor bugfixes (continuous integration):
  • Improve Appveyor CI IRC logging. Generate correct branches and URLs for pull requests and tags. Use unambiguous short commits. Fixes bug 26979; bugfix on master.
  • Build with zstd on macOS. Fixes bug 27090; bugfix on 0.3.1.5-alpha.
  • Pass the module flags to distcheck configure, and log the flags before running configure. (Backported to 0.2.9 and later as a precaution.) Fixes bug 27088; bugfix on 0.3.4.1-alpha.
• Minor bugfixes (in-process restart):
  • Always call tor_free_all() when leaving tor_run_main(). When we did not, restarting tor in-process would cause an assertion failure. Fixes bug 26948; bugfix on 0.3.3.1-alpha.
• Minor bugfixes (linux seccomp2 sandbox):
  • Fix a bug in out sandboxing rules for the openat() syscall. Previously, no openat() call would be permitted, which would break filesystem operations on recent glibc versions. Fixes bug 25440; bugfix on 0.2.9.15. Diagnosis and patch from Daniel Pinto.
• Minor bugfixes (onion services):
  • Fix bug that causes services to not ever rotate their descriptors if they were getting SIGHUPed often. Fixes bug 26932; bugfix on 0.3.2.1-alpha.
• Minor bugfixes (portability):
  • Fix compilation of the unit tests on GNU/Hurd, which does not define PATH_MAX. Fixes bug 26873; bugfix on 0.3.3.1-alpha. Patch from "paulusASol".
• Minor bugfixes (rust):
  • Backport test_rust.sh from master. Fixes bug 26497; bugfix on 0.3.1.5-alpha.
  • Consistently use ../../.. as a fallback for $abs_top_srcdir in test_rust.sh. Fixes bug 27093; bugfix on 0.3.4.3-alpha.
  • Protover parsing was accepting the presence of whitespace in version strings, which the C implementation would choke on, e.g. "Desc=1\t,2". Fixes bug 27177; bugfix on 0.3.3.5-rc.
  • Protover parsing was ignoring a 2nd hyphen and everything after it, accepting entries like "Link=1-5-foo". Fixes bug 27164; bugfix on 0.3.3.1-alpha.
  • Stop setting $CARGO_HOME. cargo will use the user's $CARGO_HOME, or $HOME/.cargo by default. Fixes bug 26497; bugfix on 0.3.1.5-alpha.
  • cd to ${abs_top_builddir}/src/rust before running cargo in src/test/test_rust.sh. This makes the working directory consistent between builds and tests. Fixes bug 26497; bugfix on 0.3.3.2-alpha.
• Minor bugfixes (testing, bootstrap):
  • When calculating bootstrap progress, check exit policies and the exit flag. Previously, Tor would only check the exit flag, which caused race conditions in small and fast networks like chutney. Fixes bug 27236; bugfix on 0.2.6.3-alpha.
• Minor bugfixes (testing, openssl compatibility):
  • Our "tortls/cert_matches_key" unit test no longer relies on OpenSSL internals. Previously, it relied on unsupported OpenSSL behavior in a way that caused it to crash with OpenSSL 1.0.2p. Fixes bug 27226; bugfix on 0.2.5.1-alpha.
• Minor bugfixes (Windows, compilation):
  • Silence a compilation warning on MSVC 2017 and clang-cl. Fixes bug 27185; bugfix on 0.2.2.2-alpha.