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@@ -1,3 +1,359 @@
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+Changes in version 0.2.6.3-alpha - 2015-02-??
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+
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+ blah blah blah
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+
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+ o Major features (changed defaults):
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+ - Prevent relay operators from unintentionally running exits: When
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+ a relay is configured as an exit node, we now warn the user
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+ unless the 'ExitRelay' option is set to 1. We warn even more
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+ loudly if the relay is configured with the default exit policy,
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+ since this tends to indicate accidental misconfiguration.
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+ Setting 'ExitRelay' to 0 stops Tor from running as an exit relay.
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+ Closes ticket 10067.
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+
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+ o Major features (security)
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+ - Implementation of an AF_UNIX socket option to implement a SOCKS
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+ proxy reachable by Unix Domain Socket. This allows client applications to
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+ communicate with Tor without having the ability to create AF_INET or
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+ AF_INET6 family sockets. If an application has permission to create a socket
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+ with AF_UNIX, it may directly communicate with Tor as if it were an other
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+ SOCKS proxy. This should allow high risk applications to be entirely prevented
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+ from connecting directly with TCP/IP, they will be able to only connect to the
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+ internet through AF_UNIX and only through Tor.
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+ To create a socket of this type, use the syntax "unix:/path/to/socket".
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+ Closes ticket 12585.
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+
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+ o Major features (hidden services):
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+ - Support mapping hidden service virtual ports to AF_UNIX sockets on
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+ suitable platforms. Resolves ticket #11485.
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+
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+ o Major features (performance):
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+ - Refactor the CPU worker implementation for better performance by
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+ avoiding the kernel and lengthening pipelines. The original
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+ implementation used sockets to transfer data from the main thread
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+ to the worker threads, and didn't allow any thread to be assigned
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+ more than a single piece of work at once. The new implementation
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+ avoids communications overhead by making requests in shared
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+ memory, avoiding kernel IO where possible, and keeping more
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+ request in flight at once. Resolves issue #9682.
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+
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+ o Removed features:
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+ - To avoid confusion with the 'ExitRelay' option, 'ExitNode' is no
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+ longer silently accepted as an alias for 'ExitNodes'.
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+
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+ o Major bugfixes (client):
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+ - Allow MapAddress and AutomapHostsOnResolve to work together when an
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+ address is mapped into another address type that must be
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+ automapped at resolve time. Fixes bug 7555; bugfix on
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+ 0.2.0.1-alpha.
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+
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+ o Major bugfixes (exit node stability):
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+ - Fix an assertion failure that could occur under high DNS load. Fixes
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+ bug 14129; bugfix on Tor 0.0.7rc1. Found by "jowr"; diagnosed and fixed
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+ by "cypherpunks".
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+
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+ o Major bugfixes (mixed relay-client operation):
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+ - When running as a relay and a client at the same time (not
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+ recommended), if we decide not to use a new guard because we
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+ want to retry older guards, only close the locally-originating
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+ circuits passing through that guard. Previously we would close
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+ all the circuits. Fixes bug 9819; bugfix on
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+ 0.2.1.1-alpha. Reported by "skruffy".
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+
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+ o Minor features (authorities, testing):
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+ - Create TestingDirAuthVoteHSDir like TestingDirAuthVoteExit/Guard.
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+ Ensures that authorities vote the HSDir flag for the listed
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+ relays regardless of uptime or ORPort connectivity.
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+ Respects the value of VoteOnHidServDirectoriesV2.
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+ Partial implementation for ticket 14067. Patch by "teor".
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+
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+ o Minor features (build):
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+ - New --disable-system-torrc compile-time option to prevent Tor from
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+ looking for a system-wide torrc or torrc-defaults tile. Resolves
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+ ticket 13037.
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+
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+ o Minor features (controller):
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+ - Include SOCKS_USERNAME and SOCKS_PASSWORD values in controller
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+ events to let controllers observe circuit isolation inputs.
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+ Closes ticket 8405.
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+ - ControlPort now supports the unix:/path/to/dir syntax as an alternative
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+ to the ControlSocket option, for consistency with SocksPort and
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+ hidden services. Closes ticket 14451.
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+ - New "GETINFO bw-event-cache" to get information about recent bandwidth
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+ events. Closes ticket 14128. Useful for controllers to get recent
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+ bandwidth history after the fix for 13988.
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+
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+ o Minor features (directory client):
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+ - When downloading server- or microdescriptors from a directory server,
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+ we no longer launch multiple simultaneous requests to the same server.
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+ This reduces load on the directory servers, especially when directory
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+ guards are in use. Closes ticket 9969.
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+ - When downloading server- or microdescriptors over a tunneled
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+ connection, do not limit the length of our request to what the Squid
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+ proxy is willing to handle. Part of ticket 9969.
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+
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+ o Minor features (directory system):
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+ - Authorities can now vote on the correct digests and latest versions for
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+ different software packages. This allows packages that include Tor to use
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+ the Tor authority system as a way to get notified of updates and their
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+ correct digests. Implements proposal 227. Closes ticket 10395.
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+
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+ o Minor features (directory, memory usage):
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+ - When we have recently been under memory pressure (over 3/4 of
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+ MaxMemInQueues is allocated), then allocate smaller zlib objects for
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+ small requests. Closes ticket 11791.
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+
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+ o Minor features (DOS resistance):
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+ - Count the total number of bytes used storing hidden service descriptors
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+ against the value of MaxMemInQueues. If we're low on memory, and more
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+ than 20% of our memory is used holding hidden service descriptors, free
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+ them until no more than 10% of our memory holds hidden service
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+ descriptors. Free the least recently fetched descriptors first.
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+ Resolves ticket 13806.
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+
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+ o Minor features (geoip):
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+ - Update geoip to the January 7 2015 Maxmind GeoLite2 Country database.
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+ - Update geoip6 to the January 7 2015 Maxmind GeoLite2 Country database.
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+
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+ o Minor features (Guard nodes):
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+ - Reduce the time delay before saving guard status to disk from 10
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+ minute to 30 seconds (or from one hour to 10 minutes if
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+ AvoidDiskWrites is set). Closes ticket 12485.
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+
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+ o Minor features (hidden service):
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+ - Make hidden service Sybil attacks harder by changing the minimum
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+ time required to become an HSDir from 25 hours up to 96 hours.
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+ Addresses ticket #14149.
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+ - New option "HiddenServiceAllowUnknownPorts" to allow hidden
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+ services to disable the anti-scanning feature introduced in
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+ 0.2.6.2-alpha. With this option not set, a connection to an
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+ unlisted port closes the circuit. With this option set, only a
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+ RELAY_DONE cell is sent. Closes ticket #14084.
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+
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+ o Minor features (interface):
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+ - Implement '-f -' CLI suboption to allow torrc to be read
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+ from standard input, thus not requiring to store torrc in file
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+ system. Implements feature 13865.
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+
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+ o Minor features (logging):
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+ - Add a count of unique clients to the bridge heartbeat message. Resolves
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+ ticket 6852.
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+ - Suppress "router info incompatible with extra info" message when
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+ reading extrainfo documents from cache. (This message got loud
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+ around when we closed bug 9812 in 0.2.6.2-alpha.) Closes ticket
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+ 13762.
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+ - Elevate authorized-client message from DEBUG to INFO. Closes
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+ ticket 14015.
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+
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+ o Minor features (systemd):
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+ - Various improvements and modernizations in systemd hardening support.
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+ Closes ticket 13805. Patch from Craig Andrews.
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+
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+ o Minor features (stability):
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+ - Prevent bugs from causing infinite loops in our hash-table
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+ iteration code by adding assertions that cached hash values have
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+ not been corrupted. Closes ticket 11737.
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+
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+ o Minor features (testing networks):
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+ - Drop the minimum RendPostPeriod on a testing network to 5 seconds,
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+ and the default to 2 minutes. Closes ticket 13401. Patch by "nickm".
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+ - Drop the MIN_REND_INITIAL_POST_DELAY on a testing network to 5 seconds,
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+ but keep the default at 30 seconds. This reduces HS bootstrap time to
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+ around 25 seconds. Change src/test/test-network.sh default time to match.
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+ Closes ticket 13401. Patch by "teor".
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+
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+ o Minor bugfixes (automapping):
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+ - Prevent changes to other options from removing the wildcard value "."
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+ from "AutomapHostsSuffixes".
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+ Fixes bug 12509; bugfix on 0.2.0.1-alpha.
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+
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+ o Minor bugfixes (build):
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+ - Avoid warnings when building with systemd 209 or later.
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+ Fixes bug 14072; bugfix on 0.2.6.2-alpha. Patch from "h.venev".
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+
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+ o Minor bugfixes (client DNS):
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+ - Report the correct cached DNS expiration times. Previously, we
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+ would report everything as "never expires." Fixes bug 14193;
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+ bugfix on 0.2.3.17-beta.
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+ - Avoid a small memory leak when we find a cached answer for a reverse
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+ DNS lookup in a client-side DNS cache. (Remember, client-side DNS
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+ caching is off by default, and is not recommended.) Fixes bug 14259;
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+ bugfix on 0.2.0.1-alpha.
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+
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+ o Minor bugfixes (client, automapping):
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+ - Check for a missing option value in parse_virtual_addr_network
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+ before asserting on the NULL in tor_addr_parse_mask_ports.
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+ This avoids crashing on torrc lines like
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+ Vi[rtualAddrNetworkIPv[4|6]] when no value follows the option.
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+ Fixes bug 14142; bugfix on 0.2.4.7-alpha.
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+ Patch by "teor".
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+ - Fix a memory leak when using AutomapHostsOnResolve.
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+ Fixes bug 14195; bugfix on 0.1.0.1-rc.
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+
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+ o Minor bugfixes (client, IPV6):
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+ - Reject socks requests to literal IPv6 addresses when IPv6Traffic
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+ flag is not set; and not because the NoIPv4Traffic flag was set.
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+ Previously we'd looked at the NoIPv4Traffic flag for both types
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+ of literal addresses. Fixes bug 14280; bugfix on 0.2.4.7-alpha.
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+
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+ o Minor bugfixes (client, bridges):
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+ - When we are using bridges and we had a network connectivity problem, only
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+ retry connecting to our currently configured bridges, not all bridges we
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+ know about and remember using.
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+ Fixes bug 14216; bugfix on tor-0.2.2.17-alpha. Patch from arma.
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+
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+ o Minor bugfixes (compilation):
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+ - Build without warnings with the stock OpenSSL srtp.h header,
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+ which has a duplicate declaration of SSL_get_selected_srtp_profile().
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+ Fixes bug 14220; this is OpenSSL's bug, not ours.
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+ - The address of an array in the middle of a structure will
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+ always be non-NULL. clang recognises this and complains.
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+ Disable the tautologous and redundant check to silence
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+ this warning.
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+ Fixes bug 14001; bugfix on 0.2.1.2-alpha.
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+ - Compile correctly with (unreleased) OpenSSL 1.1.0 headers.
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+ Addresses ticket 14188.
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+
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+ o Minor bugfixes (controller):
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+ - Add a code for the END_CIRC_REASON_IP_NOW_REDUNDANT circuit close
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+ reason. Fixes bug 14207; bugfix on 0.2.6.2-alpha.
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+ - Avoid crashing on a malformed EXTENDCIRCUIT command. Fixes bug 14116;
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+ bugfix on 0.2.2.9-alpha.
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+
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+ o Minor bugfixes (directory authority):
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+ - Allow directory authorities to fetch more data from one
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+ another if they find themselves missing lots of votes.
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+ Previously, they had been bumping against the 10 MB queued
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+ data limit. Fixes bug 14261; bugfix on 0.1.2.5-alpha.
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+ - Enlarge the buffer to read bw-auth generated files to avoid an
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+ issue when parsing the file in dirserv_read_measured_bandwidths().
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+ Fixes bug 14125; bugfix on 0.2.2.1-alpha.
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+
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+ o Minor bugfixes (file handling):
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+ - Stop failing when key files are zero-length. Instead, generate new
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+ keys, and overwrite the empty key files.
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+ Fixes bug 13111; bugfix on all versions of Tor. Patch by "teor".
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+ - Stop generating a fresh .old RSA key file when the .old file is
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+ missing. Fixes part of 13111; bugfix on 0.0.6rc1.
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+ - Avoid overwriting .old key files with empty key files.
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+ - Skip loading zero-length extra info store, router store, stats, state,
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+ and key files.
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+ - Avoid crashing when trying to reload a torrc specified as a relative
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+ path with RunAsDaemon turned on. Fixes bug 13397; bugfix on
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+ 0.2.3.11-alpha.
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+
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+ o Minor bugfixes (hidden services):
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+ - Close the intro circuit once we don't have any more usable intro
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+ points instead of making it timeout at some point. This also make sure
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+ no extra HS descriptor fetch is triggered.
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+ Fixes bug 14224; bugfix on 0.0.6.
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+ - When fetching a hidden service descriptor for a down service that we
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+ recently up, do not keep refetching until we try the same replica twice
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+ in a row. Fixes bug 14219; bugfix on 0.2.0.10-alpha.
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+ - Successfully launch Tor with a nonexistent hidden service directory.
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+ Our fix for bug 13942 didn't catch this case. Fixes bug 14106;
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+ bugfix on 0.2.6.2-alpha.
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+
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+ o Minor bugfixes (logging):
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+ - Avoid crashing when there are more log domains than entries in
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+ domain_list. Bugfix on 0.2.3.1-alpha.
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+ - Add a string representation for LD_SCHED. Fixes bug 14740;
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+ bugfix on 0.2.6.1-alpha.
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+
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+ o Minor bugfixes (parsing):
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+ - Stop accepting milliseconds (or other junk) at the end of
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+ descriptor publication times. Fixes bug 9286; bugfix on
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+ 0.0.2pre25.
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+ - Support two-number and three-number version numbers correctly, in
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+ case we change the Tor versioning system in the future. Fixes bug
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+ 13661; bugfix on 0.0.8pre1.
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+
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+ o Minor bugfixes (portability):
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+ - Fix the ioctl()-based network interface lookup code so that it will
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+ work on systems that have variable-length struct ifreq, for example
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+ Mac OS X.
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+
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+ o Minor bugfixes (shutdown):
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+ - When shutting down, always call event_del() on lingering read or
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+ write events before freeing them. Otherwise, we risk double-frees
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+ or read-after-frees in event_base_free(). Fixes bug 12985; bugfix on
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+ 0.1.0.2-rc.
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+
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+ o Minor bugfixes (small memory leaks):
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+ - Avoid leaking memory when using IPv6 virtual address mappings.
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+ Fixes bug 14123; bugfix on 0.2.4.7-alpha. Patch by Tom van der
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+ Woerdt.
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+
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+ o Minor bugfixes (statistics):
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+ - Increase period over which bandwidth observations are aggregated
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+ from 15 minutes to 4 hours. Fixes bug 13988; bugfix on 0.0.8pre1.
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+
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+ o Minor bugfixes (systemd support):
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+ - Fix detection and operation of systemd watchdog. Fixes part of
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+ bug 14141; bugfix on 0.2.6.2-alpha. Patch from Tomasz Torcz.
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+ - Run correctly under systemd with the RunAsDaemon option set.
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+ Fixes part of bug 14141; bugfix on 0.2.5.7-rc. Patch from Tomasz
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+ Torcz.
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+ - Inform the systemd supervisor about more changes in the Tor process
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+ status. Implements part of ticket 14141. Patch from Tomasz Torcz.
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+ - Cause the "--disable-systemd" option to actually disable systemd
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+ support. Fixes bug 14350; bugfix on 0.2.6.2-alpha. Patch from
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+ "blueness".
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+
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+ o Minor bugfixes (TLS):
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+ - Check more thoroughly throughout the TLS code for possible unlogged
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+ TLS errors. Possible diagnostic or fix for bug 13319.
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+
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+ o Code simplification and refactoring:
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+ - Move fields related to isolating and configuring client ports
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+ into a shared structure. Previously, they were duplicated across
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+ port_cfg_t, listener_connection_t, and edge_connection_t.
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+ Failure to copy one of them correctly had been the cause of at
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+ least one bug in the past. Closes ticket 8546.
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+ - Refactor the get_interface_addresses_raw() Doom-function into
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+ multiple smaller and easier to understand subfunctions. Cover the
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+ resulting subfunctions with unit-tests. Fixes a significant portion
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+ of issue 12376.
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+ - Remove workaround in dirserv_thinks_router_is_hs_dir() that was only
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+ for version <= 0.2.2.24 which is now deprecated. Closes ticket 14202.
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+ - Remove a test for a long-defunct broken version-one directory server.
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+
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+ o Documentation:
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+ - Adding section on OpenBSD to our TUNING document. Thanks to
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+ mmcc for writing the OpenBSD-specific tips. Resolves ticket
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+ 13702.
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+ - Make the tor-resolve documentation match its help string and its
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+ options. Resolves part of ticket 14325.
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+ - Log a more useful error message from tor-resolve when failing to
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+ look up a hidden service address. Resolves part of ticket 14325.
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+
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+ o Downgraded warnings:
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+ - Don't warn when we've attempted to contact a relay using the wrong
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+ ntor onion key. Closes ticket 9635.
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+
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+ o Testing:
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+ - Make the checkdir/perms test complete successfully even if the
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+ global umask is not 022. Fixes bug 14215; bugfix on 0.2.6.2-alpha.
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+ - Test that tor does not fail when key files are zero-length.
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+ Check that tor generates new keys, and overwrites the empty key files.
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+ - Test that tor generates new keys when keys are missing (existing
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+ behaviour).
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+ - Test that tor does not overwrite key files that already contain data
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+ (existing behaviour).
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+ Tests bug 13111. Patch by "teor".
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+ - New "make test-stem" target to run stem integration tests.
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+ Requires that the "STEM_SOURCE_DIR" environment variable be set.
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+ Closes ticket 14107.
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+ - Make the test_cmdline_args.py script work correctly on Windows.
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+ Patch from Gisle Vanem.
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+ - Move the slower unit tests into a new "./src/test/test-slow" binary
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+ that can be run independently of the other tests. Closes ticket 13243.
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+ - Avoid undefined behavior when sampling huge values from the
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+ Laplace distribution. This made unittests fail on Raspberry Pi.
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+ Bug found by Device. Fixes bug 14090; bugfix on 0.2.6.2-alpha.
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+
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+
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+
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Changes in version 0.2.6.2-alpha - 2014-12-31
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Tor 0.2.6.2-alpha is the second alpha release in the 0.2.6.x series.
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It introduces a major new backend for deciding when to send cells on
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Nick Mathewson