commit daede6f97bc892f7838c819f81f54654e10aebf8 Author: Nick Mathewson nickm@torproject.org Date: Thu Apr 28 23:31:42 2011 -0400
Add 0.2.2.25-alpha changelog on master --- ChangeLog | 186 +++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 1 files changed, 186 insertions(+), 0 deletions(-)
diff --git a/ChangeLog b/ChangeLog index 70afe71..7e95671 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,189 @@ +Changes in version 0.2.2.25-alpha - 2011-04-29 + Tor 0.2.2.25-alpha fixes many bugs: hidden service clients are more + robust, routers no longer overreport their bandwidth, Win7 should crash + a little less, and NEWNYM (as used by Vidalia's "new identity" button) + now prevents hidden service-related activity from being linkable. It + provides more information to Vidalia so you can see if your bridge is + working. Also, 0.2.2.25-alpha revamps the Entry/Exit/ExcludeNodes and + StrictNodes configuration options to make them more reliable, more + understandable, and more regularly applied. If you use those options, + please see the revised documentation for them in the manual page. + + o Major bugfixes: + - Relays were publishing grossly inflated bandwidth values because + they were writing their state files wrong--now they write the + correct value. Also, resume reading bandwidth history from the + state file correctly. Fixes bug 2704; bugfix on 0.2.2.23-alpha. + - Improve hidden service robustness: When we find that we have + extended a hidden service's introduction circuit to a relay not + listed as an introduction point in the HS descriptor we currently + have, retry with an introduction point from the current + descriptor. Previously we would just give up. Fixes bugs 1024 and + 1930; bugfix on 0.2.0.10-alpha. + - Clients now stop trying to use an exit node associated with a given + destination by TrackHostExits if they fail to reach that exit node. + Fixes bug 2999. Bugfix on 0.2.0.20-rc. + - Fix crash bug on platforms where gmtime and localtime can return + NULL. Windows 7 users were running into this one. Fixes part of bug + 2077. Bugfix on all versions of Tor. Found by boboper. + + o Security and stability fixes: + - Don't double-free a parsable, but invalid, microdescriptor, even if + it is followed in the blob we're parsing by an unparsable + microdescriptor. Fixes an issue reported in a comment on bug 2954. + Bugfix on 0.2.2.6-alpha; fix by "cypherpunks". + - If the Nickname configuration option isn't given, Tor would pick a + nickname based on the local hostname as the nickname for a relay. + Because nicknames are not very important in today's Tor and the + "Unnamed" nickname has been implemented, this is now problematic + behavior: It leaks information about the hostname without being + useful at all. Fixes bug 2979; bugfix on 0.1.2.2-alpha, which + introduced the Unnamed nickname. Reported by tagnaq. + - Fix an uncommon assertion failure when running with DNSPort under + heavy load. Fixes bug 2933; bugfix on 0.2.0.1-alpha. + - Avoid linkability based on cached hidden service descriptors: forget + all hidden service descriptors cached as a client when processing a + SIGNAL NEWNYM command. Fixes bug 3000; bugfix on 0.0.6. + + o Major features: + - Export GeoIP information on bridge usage to controllers even if we + have not yet been running for 24 hours. Now Vidalia bridge operators + can get more accurate and immediate feedback about their + contributions to the network. + + o Major features and bugfixes (node selection): + - Revise and reconcile the meaning of the ExitNodes, EntryNodes, + ExcludeEntryNodes, ExcludeExitNodes, ExcludeNodes, and StrictNodes + options. Previously, we had been ambiguous in describing what + counted as an "exit" node, and what operations exactly "StrictNodes + 0" would permit. This created confusion when people saw nodes built + through unexpected circuits, and made it hard to tell real bugs from + surprises. Now the intended behavior is: + . "Exit", in the context of ExitNodes and ExcludeExitNodes, means + a node that delivers user traffic outside the Tor network. + . "Entry", in the context of EntryNodes, means a node used as the + first hop of a multihop circuit. It doesn't include direct + connections to directory servers. + . "ExcludeNodes" applies to all nodes. + . "StrictNodes" changes the behavior of ExcludeNodes only. When + StrictNodes is set, Tor should avoid all nodes listed in + ExcludeNodes, even when it will make user requests fail. When + StrictNodes is *not* set, then Tor should follow ExcludeNodes + whenever it can, except when it must use an excluded node to + perform self-tests, connect to a hidden service, provide a + hidden service, fulfill a .exit request, upload directory + information, or fetch directory information. + Collectively, the changes to implement the behavior fix bug 1090. + - ExcludeNodes now takes precedence over EntryNodes and ExitNodes: if + a node is listed in both, it's treated as excluded. + - ExcludeNodes now applies to directory nodes -- as a preference if + StrictNodes is 0, or an absolute requirement if StrictNodes is 1. + Don't exclude all the directory authorities and set StrictNodes to 1 + unless you really want your Tor to break. + - ExcludeNodes and ExcludeExitNodes now override exit enclaving. + - ExcludeExitNodes now overrides .exit requests. + - We don't use bridges listed in ExcludeNodes. + - When StrictNodes is 1: + . We now apply ExcludeNodes to hidden service introduction points + and to rendezvous points selected by hidden service users. This + can make your hidden service less reliable: use it with caution! + . If we have used ExcludeNodes on ourself, do not try relay + reachability self-tests. + . If we have excluded all the directory authorities, we will not + even try to upload our descriptor if we're a relay. + . Do not honor .exit requests to an excluded node. + - Remove a misfeature that caused us to ignore the Fast/Stable flags + when ExitNodes is set. Bugfix on 0.2.2.7-alpha. + - When the set of permitted nodes changes, we now remove any mappings + introduced via TrackExitHosts to now-excluded nodes. Bugfix on + 0.1.0.1-rc. + - We never cannibalize a circuit that had excluded nodes on it, even + if StrictNodes is 0. Bugfix on 0.1.0.1-rc. + - Revert a change where we would be laxer about attaching streams to + circuits than when building the circuits. This was meant to prevent + a set of bugs where streams were never attachable, but our improved + code here should make this unnecessary. Bugfix on 0.2.2.7-alpha. + - Keep track of how many times we launch a new circuit to handle a + given stream. Too many launches could indicate an inconsistency + between our "launch a circuit to handle this stream" logic and our + "attach this stream to one of the available circuits" logic. + - Improve log messages related to excluded nodes. + + o Minor bugfixes: + - Fix a spurious warning when moving from a short month to a long + month on relays with month-based BandwidthAccounting. Bugfix on + 0.2.2.17-alpha; fixes bug 3020. + - When a client finds that an origin circuit has run out of 16-bit + stream IDs, we now mark it as unusable for new streams. Previously, + we would try to close the entire circuit. Bugfix on 0.0.6. + - Add a forgotten cast that caused a compile warning on OS X 10.6. + Bugfix on 0.2.2.24-alpha. + - Be more careful about reporting the correct error from a failed + connect() system call. Under some circumstances, it was possible to + look at an incorrect value for errno when sending the end reason. + Bugfix on 0.1.0.1-rc. + - Correctly handle an "impossible" overflow cases in connection byte + counting, where we write or read more than 4GB on an edge connection + in a single second. Bugfix on 0.1.2.8-beta. + - Correct the warning displayed when a rendezvous descriptor exceeds + the maximum size. Fixes bug 2750; bugfix on 0.2.1.5-alpha. Found by + John Brooks. + - Clients and hidden services now use HSDir-flagged relays for hidden + service descriptor downloads and uploads even if the relays have no + DirPort set and the client has disabled TunnelDirConns. This will + eventually allow us to give the HSDir flag to relays with no + DirPort. Fixes bug 2722; bugfix on 0.2.1.6-alpha. + - Downgrade "no current certificates known for authority" message from + Notice to Info. Fixes bug 2899; bugfix on 0.2.0.10-alpha. + - Make the SIGNAL DUMP control-port command work on FreeBSD. Fixes bug + 2917. Bugfix on 0.1.1.1-alpha. + - Only limit the lengths of single HS descriptors, even when multiple + HS descriptors are published to an HSDir relay in a single POST + operation. Fixes bug 2948; bugfix on 0.2.1.5-alpha. Found by hsdir. + - Write the current time into the LastWritten line in our state file, + rather than the time from the previous write attempt. Also, stop + trying to use a time of -1 in our log statements. Fixes bug 3039; + bugfix on 0.2.2.14-alpha. + - Be more consistent in our treatment of file system paths. "~" should + get expanded to the user's home directory in the Log config option. + Fixes bug 2971; bugfix on 0.2.0.1-alpha, which introduced the + feature for the -f and --DataDirectory options. + + o Minor features: + - Make sure every relay writes a state file at least every 12 hours. + Previously, a relay could go for weeks without writing its state + file, and on a crash could lose its bandwidth history, capacity + estimates, client country statistics, and so on. Addresses bug 3012. + - Send END_STREAM_REASON_NOROUTE in response to EHOSTUNREACH errors. + Clients before 0.2.1.27 didn't handle NOROUTE correctly, but such + clients are already deprecated because of security bugs. + - Don't allow v0 hidden service authorities to act as clients. + Required by fix for bug 3000. + - Ignore SIGNAL NEWNYM commands on relay-only Tor instances. Required + by fix for bug 3000. + - Ensure that no empty [dirreq-](read|write)-history lines are added + to an extrainfo document. Implements ticket 2497. + + o Code simplification and refactoring: + - Remove workaround code to handle directory responses from servers + that had bug 539 (they would send HTTP status 503 responses _and_ + send a body too). Since only server versions before + 0.2.0.16-alpha/0.1.2.19 were affected, there is no longer reason to + keep the workaround in place. + - Remove the old 'fuzzy time' logic. It was supposed to be used for + handling calculations where we have a known amount of clock skew and + an allowed amount of unknown skew. But we only used it in three + places, and we never adjusted the known/unknown skew values. This is + still something we might want to do someday, but if we do, we'll + want to do it differently. + - Avoid signed/unsigned comparisons by making SIZE_T_CEILING unsigned. + None of the cases where we did this before were wrong, but by making + this change we avoid warnings. Fixes bug 2475; bugfix on 0.2.1.28. + - Use GetTempDir to find the proper temporary directory location on + Windows when generating temporary files for the unit tests. Patch by + Gisle Vanem. + + Changes in version 0.2.2.24-alpha - 2011-04-08 Tor 0.2.2.24-alpha fixes a variety of bugs, including a big bug that prevented Tor clients from effectively using "multihomed" bridges,