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[tor-talk] Tor 0.3.5.3-alpha is released



Hi!

There's a new alpha Tor release! Because it's an alpha, you should
only run it if you're ready to find more bugs than usual, and report
them on trac.torproject.org.

The source code is available from the usual place on
www.torproject.org; if you build Tor from source, why not give it a
try? And if you don't build Tor from source, packages should be ready
over the coming days, with a Tor Browser alpha release likely in a
couple of weeks.

Here's what's new:

Changes in version 0.3.5.3-alpha - 2018-10-17
  Tor 0.3.5.3-alpha fixes several bugs, mostly from previous 0.3.5.x
  versions. One important fix for relays addresses a problem with rate-
  limiting code from back in 0.3.4.x: If the fix works out, we'll be
  backporting it soon. This release is still an alpha, but we hope it's
  getting closer and closer to stability.

  o Major features (onion services):
    - Version 3 onion services can now use the per-service
      HiddenServiceExportCircuitID option to differentiate client
      circuits. It communicates with the service by using the HAProxy
      protocol to assign virtual IP addresses to inbound client
      circuits. Closes ticket 4700. Patch by Mahrud Sayrafi.

  o Major bugfixes (compilation):
    - Fix compilation on ARM (and other less-used CPUs) when compiling
      with OpenSSL before 1.1. Fixes bug 27781; bugfix on 0.3.4.1-alpha.

  o Major bugfixes (initialization, crash):
    - Fix an assertion crash that would stop Tor from starting up if it
      tried to activate a periodic event too early. Fixes bug 27861;
      bugfix on 0.3.5.1-alpha.

  o Major bugfixes (mainloop, bootstrap):
    - Make sure Tor bootstraps and works properly if only the
      ControlPort is set. Prior to this fix, Tor would only bootstrap
      when a client port was set (Socks, Trans, NATD, DNS or HTTPTunnel
      port). Fixes bug 27849; bugfix on 0.3.4.1-alpha.

  o Major bugfixes (relay):
    - When our write bandwidth limit is exhausted, stop writing on the
      connection. Previously, we had a typo in the code that would make
      us stop reading instead, leading to relay connections being stuck
      indefinitely and consuming kernel RAM. Fixes bug 28089; bugfix
      on 0.3.4.1-alpha.

  o Minor features (continuous integration):
    - Use the Travis Homebrew addon to install packages on macOS during
      Travis CI. The package list is the same, but the Homebrew addon
      does not do a `brew update` by default. Implements ticket 27738.
    - Report what program produced the mysterious core file that we
      occasionally see on Travis CI during make distcheck. Closes
      ticket 28024.

  o Minor features (geoip):
    - Update geoip and geoip6 to the October 9 2018 Maxmind GeoLite2
      Country database. Closes ticket 27991.

  o Minor bugfixes (code safety):
    - Rewrite our assertion macros so that they no longer suppress the
      compiler's -Wparentheses warnings. Fixes bug 27709; bugfix
      on 0.0.6.

  o Minor bugfixes (compilation):
    - Compile the ed25519-donna code with a correct declaration of
      crypto_strongest_rand(). Previously, we built it with one type,
      but linked it against another in the unit tests, which caused
      compilation failures with LTO enabled. This could have caused
      other undefined behavior in the tests. Fixes bug 27728; bugfix
      on 0.3.5.1-alpha.

  o Minor bugfixes (compilation, netbsd):
    - Add a missing include back into procmon.c. Fixes bug 27990; bugfix
      on 0.3.5.1-alpha.

  o Minor bugfixes (continuous integration, appveyor):
    - Install only the necessary mingw packages during our appveyor
      builds. This change makes the build a little faster, and prevents
      a conflict with a preinstalled mingw openssl that appveyor now
      ships. Fixes bugs 27765 and 27943; bugfix on 0.3.4.2-alpha.

  o Minor bugfixes (directory permissions):
    - When a user requests a group-readable DataDirectory, give it to
      them. Previously, when the DataDirectory and the CacheDirectory
      were the same, the default setting (0) for
      CacheDirectoryGroupReadable would override the setting for
      DataDirectoryGroupReadable. Fixes bug 26913; bugfix
      on 0.3.3.1-alpha.

  o Minor bugfixes (memory leaks):
    - Fix a small memory leak when calling Tor with --dump-config. Fixes
      bug 27893; bugfix on 0.3.2.1-alpha.

  o Minor bugfixes (networking):
    - In retry_listeners_ports(), make sure that we're removing a member
      of old_conns smartlist at most once. Fixes bug 27808; bugfix
      on 0.3.5.1-alpha.
    - Refrain from attempting socket rebinding when old and new
      listeners are in different address families. Fixes bug 27928;
      bugfix on 0.3.5.1-alpha.

  o Minor bugfixes (onion service v3):
    - Stop dumping a stack trace when trying to connect to an intro
      point without having a descriptor for it. Fixes bug 27774; bugfix
      on 0.3.2.1-alpha.
    - Don't warn so loudly when Tor is unable to decode an onion
      descriptor. This can now happen as a normal use case if a client
      gets a descriptor with client authorization but the client is not
      authorized. Fixes bug 27550; bugfix on 0.3.5.1-alpha.
    - When selecting a v3 rendezvous point, don't only look at the
      protover, but also check whether the curve25519 onion key is
      present. This way we avoid picking a relay that supports the v3
      rendezvous but for which we don't have the microdescriptor. Fixes
      bug 27797; bugfix on 0.3.2.1-alpha.

  o Minor bugfixes (protover):
    - Reject protocol names containing bytes other than alphanumeric
      characters and hyphens ([A-Za-z0-9-]). Fixes bug 27316; bugfix
      on 0.2.9.4-alpha.

  o Minor bugfixes (testing):
    - Make the hs_service tests use the same time source when creating
      the introduction point and when testing it. Now tests work better
      on very slow systems like ARM or Travis. Fixes bug 27810; bugfix
      on 0.3.2.1-alpha.
    - In test_rebind.py, check if the Python version is in the supported
      range. Fixes bug 27675; bugfix on 0.3.5.1-alpha.

  o Code simplification and refactoring:
    - Divide more large Tor source files -- especially ones that span
      multiple areas of functionality -- into smaller parts, including
      onion.c and main.c. Closes ticket 26747.
    - Divide the "routerparse.c" module into separate modules for each
      group of parsed objects. Closes ticket 27924.
    - Move protover_rust.c to the same place protover.c was moved to.
      Closes ticket 27814.
    - Split directory.c into separate pieces for client, server, and
      common functionality. Closes ticket 26744.
    - Split the non-statistics-related parts from the rephist.c and
      geoip.c modules. Closes ticket 27892.
    - Split the router.c file into relay-only and shared components, to
      help with future modularization. Closes ticket 27864.

  o Documentation:
    - In the tor-resolve(1) manpage, fix the reference to socks-
      extensions.txt by adding a web URL. Resolves ticket 27853.
    - Mention that we require Python to be 2.7 or newer for some
      integration tests that we ship with Tor. Resolves ticket 27677.
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