copy the 0.2.2.26-beta changelog to master too
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ChangeLog
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ChangeLog
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@ -143,6 +143,140 @@ Changes in version 0.2.3.1-alpha - 2011-05-05
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issue 2379.
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Changes in version 0.2.2.26-beta - 2011-05-17
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Tor 0.2.2.26-beta fixes a variety of potential privacy problems. It
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also introduces a new "socksport auto" approach that should make it
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easier to run multiple Tors on the same system, and does a lot of
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cleanup to get us closer to a release candidate.
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o Security/privacy fixes:
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- Replace all potentially sensitive memory comparison operations
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with versions whose runtime does not depend on the data being
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compared. This will help resist a class of attacks where an
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adversary can use variations in timing information to learn
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sensitive data. Fix for one case of bug 3122. (Safe memcmp
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implementation by Robert Ransom based partially on code by DJB.)
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- When receiving a hidden service descriptor, check that it is for
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the hidden service we wanted. Previously, Tor would store any
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hidden service descriptors that a directory gave it, whether it
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wanted them or not. This wouldn't have let an attacker impersonate
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a hidden service, but it did let directories pre-seed a client
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with descriptors that it didn't want. Bugfix on 0.0.6.
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- On SIGHUP, do not clear out all TrackHostExits mappings, client
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DNS cache entries, and virtual address mappings: that's what
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NEWNYM is for. Fixes bug 1345; bugfix on 0.1.0.1-rc.
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o Major features:
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- The options SocksPort, ControlPort, and so on now all accept a
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value "auto" that opens a socket on an OS-selected port. A
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new ControlPortWriteToFile option tells Tor to write its
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actual control port or ports to a chosen file. If the option
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ControlPortFileGroupReadable is set, the file is created as
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group-readable. Now users can run two Tor clients on the same
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system without needing to manually mess with parameters. Resolves
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part of ticket 3076.
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- Set SO_REUSEADDR on all sockets, not just listeners. This should
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help busy exit nodes avoid running out of useable ports just
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because all the ports have been used in the near past. Resolves
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issue 2850.
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o Minor features:
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- New "GETINFO net/listeners/(type)" controller command to return
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a list of addresses and ports that are bound for listeners for a
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given connection type. This is useful when the user has configured
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"SocksPort auto" and the controller needs to know which port got
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chosen. Resolves another part of ticket 3076.
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- Add a new ControlSocketsGroupWritable configuration option: when
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it is turned on, ControlSockets are group-writeable by the default
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group of the current user. Patch by Jérémy Bobbio; implements
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ticket 2972.
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- Tor now refuses to create a ControlSocket in a directory that is
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world-readable (or group-readable if ControlSocketsGroupWritable
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is 0). This is necessary because some operating systems do not
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enforce permissions on an AF_UNIX sockets. Permissions on the
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directory holding the socket, however, seems to work everywhere.
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- Rate-limit a warning about failures to download v2 networkstatus
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documents. Resolves part of bug 1352.
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- Backport code from 0.2.3.x that allows directory authorities to
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clean their microdescriptor caches. Needed to resolve bug 2230.
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- When an HTTPS proxy reports "403 Forbidden", we now explain
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what it means rather than calling it an unexpected status code.
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Closes bug 2503. Patch from Michael Yakubovich.
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- Update to the May 1 2011 Maxmind GeoLite Country database.
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o Minor bugfixes:
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- Authorities now clean their microdesc cache periodically and when
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reading from disk initially, not only when adding new descriptors.
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This prevents a bug where we could lose microdescriptors. Bugfix
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on 0.2.2.6-alpha. 2230
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- Do not crash when our configuration file becomes unreadable, for
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example due to a permissions change, between when we start up
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and when a controller calls SAVECONF. Fixes bug 3135; bugfix
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on 0.0.9pre6.
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- Avoid a bug that would keep us from replacing a microdescriptor
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cache on Windows. (We would try to replace the file while still
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holding it open. That's fine on Unix, but Windows doesn't let us
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do that.) Bugfix on 0.2.2.6-alpha; bug found by wanoskarnet.
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- Add missing explanations for the authority-related torrc options
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RephistTrackTime, BridgePassword, and V3AuthUseLegacyKey in the
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man page. Resolves issue 2379.
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- As an authority, do not upload our own vote or signature set to
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ourself. It would tell us nothing new, and as of 0.2.2.24-alpha,
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it would get flagged as a duplicate. Resolves bug 3026.
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- Accept hidden service descriptors if we think we might be a hidden
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service directory, regardless of what our consensus says. This
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helps robustness, since clients and hidden services can sometimes
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have a more up-to-date view of the network consensus than we do,
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and if they think that the directory authorities list us a HSDir,
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we might actually be one. Related to bug 2732; bugfix on
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0.2.0.10-alpha.
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- When a controller changes TrackHostExits, remove mappings for
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hosts that should no longer have their exits tracked. Bugfix on
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0.1.0.1-rc.
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- When a controller changes VirtualAddrNetwork, remove any mappings
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for hosts that were automapped to the old network. Bugfix on
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0.1.1.19-rc.
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- When a controller changes one of the AutomapHosts* options, remove
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any mappings for hosts that should no longer be automapped. Bugfix
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on 0.2.0.1-alpha.
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- Do not reset the bridge descriptor download status every time we
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re-parse our configuration or get a configuration change. Fixes
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bug 3019; bugfix on 0.2.0.3-alpha.
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o Minor bugfixes (code cleanup):
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- When loading the microdesc journal, remember its current size.
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In 0.2.2, this helps prevent the microdesc journal from growing
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without limit on authorities (who are the only ones to use it in
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0.2.2). Fixes a part of bug 2230; bugfix on 0.2.2.6-alpha.
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Fix posted by "cypherpunks."
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- The microdesc journal is supposed to get rebuilt only if it is
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at least _half_ the length of the store, not _twice_ the length
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of the store. Bugfix on 0.2.2.6-alpha; fixes part of bug 2230.
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- Fix a potential null-pointer dereference while computing a
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consensus. Bugfix on tor-0.2.0.3-alpha, found with the help of
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clang's analyzer.
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- Avoid a possible null-pointer dereference when rebuilding the mdesc
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cache without actually having any descriptors to cache. Bugfix on
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0.2.2.6-alpha. Issue discovered using clang's static analyzer.
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- If we fail to compute the identity digest of a v3 legacy keypair,
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warn, and don't use a buffer-full of junk instead. Bugfix on
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0.2.1.1-alpha; fixes bug 3106.
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- Resolve an untriggerable issue in smartlist_string_num_isin(),
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where if the function had ever in the future been used to check
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for the presence of a too-large number, it would have given an
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incorrect result. (Fortunately, we only used it for 16-bit
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values.) Fixes bug 3175; bugfix on 0.1.0.1-rc.
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- Require that introduction point keys and onion handshake keys
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have a public exponent of 65537. Starts to fix bug 3207; bugfix
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on 0.2.0.10-alpha.
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o Removed features:
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- Caches no longer download and serve v2 networkstatus documents
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unless FetchV2Networkstatus flag is set: these documents haven't
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haven't been used by clients or relays since 0.2.0.x. Resolves
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bug 3022.
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Changes in version 0.2.2.25-alpha - 2011-04-29
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Tor 0.2.2.25-alpha fixes many bugs: hidden service clients are more
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robust, routers no longer overreport their bandwidth, Win7 should crash
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