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- This document summarizes new features and bugfixes in each stable release
- of Tor. If you want to see more detailed descriptions of the changes in
- each development snapshot, see the ChangeLog file.
- Changes in version 0.1.2.19 - 2008-01-17
- Tor 0.1.2.19 fixes a huge memory leak on exit relays, makes the default
- exit policy a little bit more conservative so it's safer to run an
- exit relay on a home system, and fixes a variety of smaller issues.
- o Security fixes:
- - Exit policies now reject connections that are addressed to a
- relay's public (external) IP address too, unless
- ExitPolicyRejectPrivate is turned off. We do this because too
- many relays are running nearby to services that trust them based
- on network address.
- o Major bugfixes:
- - When the clock jumps forward a lot, do not allow the bandwidth
- buckets to become negative. Fixes bug 544.
- - Fix a memory leak on exit relays; we were leaking a cached_resolve_t
- on every successful resolve. Reported by Mike Perry.
- - Purge old entries from the "rephist" database and the hidden
- service descriptor database even when DirPort is zero.
- - Stop thinking that 0.1.2.x directory servers can handle "begin_dir"
- requests. Should ease bugs 406 and 419 where 0.1.2.x relays are
- crashing or mis-answering these requests.
- - When we decide to send a 503 response to a request for servers, do
- not then also send the server descriptors: this defeats the whole
- purpose. Fixes bug 539.
- o Minor bugfixes:
- - Changing the ExitPolicyRejectPrivate setting should cause us to
- rebuild our server descriptor.
- - Fix handling of hex nicknames when answering controller requests for
- networkstatus by name, or when deciding whether to warn about
- unknown routers in a config option. (Patch from mwenge.)
- - Fix a couple of hard-to-trigger autoconf problems that could result
- in really weird results on platforms whose sys/types.h files define
- nonstandard integer types.
- - Don't try to create the datadir when running --verify-config or
- --hash-password. Resolves bug 540.
- - If we were having problems getting a particular descriptor from the
- directory caches, and then we learned about a new descriptor for
- that router, we weren't resetting our failure count. Reported
- by lodger.
- - Although we fixed bug 539 (where servers would send HTTP status 503
- responses _and_ send a body too), there are still servers out there
- that haven't upgraded. Therefore, make clients parse such bodies
- when they receive them.
- - Run correctly on systems where rlim_t is larger than unsigned long.
- This includes some 64-bit systems.
- - Run correctly on platforms (like some versions of OS X 10.5) where
- the real limit for number of open files is OPEN_FILES, not rlim_max
- from getrlimit(RLIMIT_NOFILES).
- - Avoid a spurious free on base64 failure.
- - Avoid segfaults on certain complex invocations of
- router_get_by_hexdigest().
- - Fix rare bug on REDIRECTSTREAM control command when called with no
- port set: it could erroneously report an error when none had
- happened.
- Changes in version 0.1.2.18 - 2007-10-28
- Tor 0.1.2.18 fixes many problems including crash bugs, problems with
- hidden service introduction that were causing huge delays, and a big
- bug that was causing some servers to disappear from the network status
- lists for a few hours each day.
- o Major bugfixes (crashes):
- - If a connection is shut down abruptly because of something that
- happened inside connection_flushed_some(), do not call
- connection_finished_flushing(). Should fix bug 451:
- "connection_stop_writing: Assertion conn->write_event failed"
- Bugfix on 0.1.2.7-alpha.
- - Fix possible segfaults in functions called from
- rend_process_relay_cell().
- o Major bugfixes (hidden services):
- - Hidden services were choosing introduction points uniquely by
- hexdigest, but when constructing the hidden service descriptor
- they merely wrote the (potentially ambiguous) nickname.
- - Clients now use the v2 intro format for hidden service
- connections: they specify their chosen rendezvous point by identity
- digest rather than by (potentially ambiguous) nickname. These
- changes could speed up hidden service connections dramatically.
- o Major bugfixes (other):
- - Stop publishing a new server descriptor just because we get a
- HUP signal. This led (in a roundabout way) to some servers getting
- dropped from the networkstatus lists for a few hours each day.
- - When looking for a circuit to cannibalize, consider family as well
- as identity. Fixes bug 438. Bugfix on 0.1.0.x (which introduced
- circuit cannibalization).
- - When a router wasn't listed in a new networkstatus, we were leaving
- the flags for that router alone
- Running, etc
- that it shouldn't be considered to exist at all anymore. Now we
- clear all the flags for routers that fall out of the networkstatus
- consensus. Fixes bug 529.
- o Minor bugfixes:
- - Don't try to access (or alter) the state file when running
-
- bug 499.
- - When generating information telling us how to extend to a given
- router, do not try to include the nickname if it is
- absent. Resolves bug 467.
- - Fix a user-triggerable segfault in expand_filename(). (There isn't
- a way to trigger this remotely.)
- - When sending a status event to the controller telling it that an
- OR address is readable, set the port correctly. (Previously we
- were reporting the dir port.)
- - Fix a minor memory leak whenever a controller sends the PROTOCOLINFO
- command. Bugfix on 0.1.2.17.
- - When loading bandwidth history, do not believe any information in
- the future. Fixes bug 434.
- - When loading entry guard information, do not believe any information
- in the future.
- - When we have our clock set far in the future and generate an
- onion key, then re-set our clock to be correct, we should not stop
- the onion key from getting rotated.
- - On some platforms, accept() can return a broken address. Detect
- this more quietly, and deal accordingly. Fixes bug 483.
- - It's not actually an error to find a non-pending entry in the DNS
- cache when canceling a pending resolve. Don't log unless stuff
- is fishy. Resolves bug 463.
- - Don't reset trusted dir server list when we set a configuration
- option. Patch from Robert Hogan.
- Changes in version 0.1.2.17 - 2007-08-30
- Tor 0.1.2.17 features a new Vidalia version in the Windows and OS
- X bundles. Vidalia 0.0.14 makes authentication required for the
- ControlPort in the default configuration, which addresses important
- security risks. Everybody who uses Vidalia (or another controller)
- should upgrade.
- In addition, this Tor update fixes major load balancing problems with
- path selection, which should speed things up a lot once many people
- have upgraded.
- o Major bugfixes (security):
- - We removed support for the old (v0) control protocol. It has been
- deprecated since Tor 0.1.1.1-alpha, and keeping it secure has
- become more of a headache than it's worth.
- o Major bugfixes (load balancing):
- - When choosing nodes for non-guard positions, weight guards
- proportionally less, since they already have enough load. Patch
- from Mike Perry.
- - Raise the "max believable bandwidth" from 1.5MB/s to 10MB/s. This
- will allow fast Tor servers to get more attention.
- - When we're upgrading from an old Tor version, forget our current
- guards and pick new ones according to the new weightings. These
- three load balancing patches could raise effective network capacity
- by a factor of four. Thanks to Mike Perry for measurements.
- o Major bugfixes (stream expiration):
- - Expire not-yet-successful application streams in all cases if
- they've been around longer than SocksTimeout. Right now there are
- some cases where the stream will live forever, demanding a new
- circuit every 15 seconds. Fixes bug 454; reported by lodger.
- o Minor features (controller):
- - Add a PROTOCOLINFO controller command. Like AUTHENTICATE, it
- is valid before any authentication has been received. It tells
- a controller what kind of authentication is expected, and what
- protocol is spoken. Implements proposal 119.
- o Minor bugfixes (performance):
- - Save on most routerlist_assert_ok() calls in routerlist.c, thus
- greatly speeding up loading cached-routers from disk on startup.
- - Disable sentinel-based debugging for buffer code: we squashed all
- the bugs that this was supposed to detect a long time ago, and now
- its only effect is to change our buffer sizes from nice powers of
- two (which platform mallocs tend to like) to values slightly over
- powers of two (which make some platform mallocs sad).
- o Minor bugfixes (misc):
- - If exit bandwidth ever exceeds one third of total bandwidth, then
- use the correct formula to weight exit nodes when choosing paths.
- Based on patch from Mike Perry.
- - Choose perfectly fairly among routers when choosing by bandwidth and
- weighting by fraction of bandwidth provided by exits. Previously, we
- would choose with only approximate fairness, and correct ourselves
- if we ran off the end of the list.
- - If we require CookieAuthentication but we fail to write the
- cookie file, we would warn but not exit, and end up in a state
- where no controller could authenticate. Now we exit.
- - If we require CookieAuthentication, stop generating a new cookie
- every time we change any piece of our config.
- - Refuse to start with certain directory authority keys, and
- encourage people using them to stop.
- - Terminate multi-line control events properly. Original patch
- from tup.
- - Fix a minor memory leak when we fail to find enough suitable
- servers to choose a circuit.
- - Stop leaking part of the descriptor when we run into a particularly
- unparseable piece of it.
- Changes in version 0.1.2.16 - 2007-08-01
- Tor 0.1.2.16 fixes a critical security vulnerability that allows a
- remote attacker in certain situations to rewrite the user's torrc
- configuration file. This can completely compromise anonymity of users
- in most configurations, including those running the Vidalia bundles,
- TorK, etc. Or worse.
- o Major security fixes:
- - Close immediately after missing authentication on control port;
- do not allow multiple authentication attempts.
- Changes in version 0.1.2.15 - 2007-07-17
- Tor 0.1.2.15 fixes several crash bugs, fixes some anonymity-related
- problems, fixes compilation on BSD, and fixes a variety of other
- bugs. Everybody should upgrade.
- o Major bugfixes (compilation):
- - Fix compile on FreeBSD/NetBSD/OpenBSD. Oops.
- o Major bugfixes (crashes):
- - Try even harder not to dereference the first character after
- an mmap(). Reported by lodger.
- - Fix a crash bug in directory authorities when we re-number the
- routerlist while inserting a new router.
- - When the cached-routers file is an even multiple of the page size,
- don't run off the end and crash. (Fixes bug 455; based on idea
- from croup.)
- - Fix eventdns.c behavior on Solaris: It is critical to include
- orconfig.h _before_ sys/types.h, so that we can get the expected
- definition of _FILE_OFFSET_BITS.
- o Major bugfixes (security):
- - Fix a possible buffer overrun when using BSD natd support. Bug
- found by croup.
- - When sending destroy cells from a circuit's origin, don't include
- the reason for tearing down the circuit. The spec says we didn't,
- and now we actually don't. Reported by lodger.
- - Keep streamids from different exits on a circuit separate. This
- bug may have allowed other routers on a given circuit to inject
- cells into streams. Reported by lodger; fixes bug 446.
- - If there's a never-before-connected-to guard node in our list,
- never choose any guards past it. This way we don't expand our
- guard list unless we need to.
- o Minor bugfixes (guard nodes):
- - Weight guard selection by bandwidth, so that low-bandwidth nodes
- don't get overused as guards.
- o Minor bugfixes (directory):
- - Correctly count the number of authorities that recommend each
- version. Previously, we were under-counting by 1.
- - Fix a potential crash bug when we load many server descriptors at
- once and some of them make others of them obsolete. Fixes bug 458.
- o Minor bugfixes (hidden services):
- - Stop tearing down the whole circuit when the user asks for a
- connection to a port that the hidden service didn't configure.
- Resolves bug 444.
- o Minor bugfixes (misc):
- - On Windows, we were preventing other processes from reading
- cached-routers while Tor was running. Reported by janbar.
- - Fix a possible (but very unlikely) bug in picking routers by
- bandwidth. Add a log message to confirm that it is in fact
- unlikely. Patch from lodger.
- - Backport a couple of memory leak fixes.
- - Backport miscellaneous cosmetic bugfixes.
- Changes in version 0.1.2.14 - 2007-05-25
- Tor 0.1.2.14 changes the addresses of two directory authorities (this
- change especially affects those who serve or use hidden services),
- and fixes several other crash- and security-related bugs.
- o Directory authority changes:
- - Two directory authorities (moria1 and moria2) just moved to new
- IP addresses. This change will particularly affect those who serve
- or use hidden services.
- o Major bugfixes (crashes):
- - If a directory server runs out of space in the connection table
- as it's processing a begin_dir request, it will free the exit stream
- but leave it attached to the circuit, leading to unpredictable
- behavior. (Reported by seeess, fixes bug 425.)
- - Fix a bug in dirserv_remove_invalid() that would cause authorities
- to corrupt memory under some really unlikely scenarios.
- - Tighten router parsing rules. (Bugs reported by Benedikt Boss.)
- - Avoid segfaults when reading from mmaped descriptor file. (Reported
- by lodger.)
- o Major bugfixes (security):
- - When choosing an entry guard for a circuit, avoid using guards
- that are in the same family as the chosen exit
- that are exactly the chosen exit. (Reported by lodger.)
- o Major bugfixes (resource management):
- - If a directory authority is down, skip it when deciding where to get
- networkstatus objects or descriptors. Otherwise we keep asking
- every 10 seconds forever. Fixes bug 384.
- - Count it as a failure if we fetch a valid network-status but we
- don't want to keep it. Otherwise we'll keep fetching it and keep
- not wanting to keep it. Fixes part of bug 422.
- - If all of our dirservers have given us bad or no networkstatuses
- lately, then stop hammering them once per minute even when we
- think they're failed. Fixes another part of bug 422.
- o Minor bugfixes:
- - Actually set the purpose correctly for descriptors inserted with
- purpose=controller.
- - When we have k non-v2 authorities in our DirServer config,
- we ignored the last k authorities in the list when updating our
- network-statuses.
- - Correctly back-off from requesting router descriptors that we are
- having a hard time downloading.
- - Read resolv.conf files correctly on platforms where read() returns
- partial results on small file reads.
- - Don't rebuild the entire router store every time we get 32K of
- routers: rebuild it when the journal gets very large, or when
- the gaps in the store get very large.
- o Minor features:
- - When routers publish SVN revisions in their router descriptors,
- authorities now include those versions correctly in networkstatus
- documents.
- - Warn when using a version of libevent before 1.3b to run a server on
- OSX or BSD: these versions interact badly with userspace threads.
- Changes in version 0.1.2.13 - 2007-04-24
- This release features some major anonymity fixes, such as safer path
- selection; better client performance; faster bootstrapping, better
- address detection, and better DNS support for servers; write limiting as
- well as read limiting to make servers easier to run; and a huge pile of
- other features and bug fixes. The bundles also ship with Vidalia 0.0.11.
- Tor 0.1.2.13 is released in memory of Rob Levin (1955-2006), aka lilo
- of the Freenode IRC network, remembering his patience and vision for
- free speech on the Internet.
- o Major features, client performance:
- - Weight directory requests by advertised bandwidth. Now we can
- let servers enable write limiting but still allow most clients to
- succeed at their directory requests. (We still ignore weights when
- choosing a directory authority; I hope this is a feature.)
- - Stop overloading exit nodes
- middle hops when the total bandwidth available from non-exit nodes
- is much higher than the total bandwidth available from exit nodes.
- - Rather than waiting a fixed amount of time between retrying
- application connections, we wait only 10 seconds for the first,
- 10 seconds for the second, and 15 seconds for each retry after
- that. Hopefully this will improve the expected user experience.
- - Sometimes we didn't bother sending a RELAY_END cell when an attempt
- to open a stream fails; now we do in more cases. This should
- make clients able to find a good exit faster in some cases, since
- unhandleable requests will now get an error rather than timing out.
- o Major features, client functionality:
- - Implement BEGIN_DIR cells, so we can connect to a directory
- server via TLS to do encrypted directory requests rather than
- plaintext. Enable via the TunnelDirConns and PreferTunneledDirConns
- config options if you like. For now, this feature only works if
- you already have a descriptor for the destination dirserver.
- - Add support for transparent application connections: this basically
- bundles the functionality of trans-proxy-tor into the Tor
- mainline. Now hosts with compliant pf/netfilter implementations
- can redirect TCP connections straight to Tor without diverting
- through SOCKS. (Based on patch from tup.)
- - Add support for using natd; this allows FreeBSDs earlier than
- 5.1.2 to have ipfw send connections through Tor without using
- SOCKS. (Patch from Zajcev Evgeny with tweaks from tup.)
- o Major features, servers:
- - Setting up a dyndns name for your server is now optional: servers
- with no hostname or IP address will learn their IP address by
- asking the directory authorities. This code only kicks in when you
- would normally have exited with a "no address" error. Nothing's
- authenticated, so use with care.
- - Directory servers now spool server descriptors, v1 directories,
- and v2 networkstatus objects to buffers as needed rather than en
- masse. They also mmap the cached-routers files. These steps save
- lots of memory.
- - Stop requiring clients to have well-formed certificates, and stop
- checking nicknames in certificates. (Clients have certificates so
- that they can look like Tor servers, but in the future we might want
- to allow them to look like regular TLS clients instead. Nicknames
- in certificates serve no purpose other than making our protocol
- easier to recognize on the wire.) Implements proposal 106.
- o Improvements on DNS support:
- - Add "eventdns" asynchronous dns library originally based on code
- from Adam Langley. Now we can discard the old rickety dnsworker
- concept, and support a wider variety of DNS functions. Allows
- multithreaded builds on NetBSD and OpenBSD again.
- - Add server-side support for "reverse" DNS lookups (using PTR
- records so clients can determine the canonical hostname for a given
- IPv4 address). Only supported by servers using eventdns; servers
- now announce in their descriptors if they don't support eventdns.
- - Workaround for name servers (like Earthlink's) that hijack failing
- DNS requests and replace the no-such-server answer with a "helpful"
- redirect to an advertising-driven search portal. Also work around
- DNS hijackers who "helpfully" decline to hijack known-invalid
- RFC2606 addresses. Config option "ServerDNSDetectHijacking 0"
- lets you turn it off.
- - Servers now check for the case when common DNS requests are going to
- wildcarded addresses (i.e. all getting the same answer), and change
- their exit policy to reject *:* if it's happening.
- - When asked to resolve a hostname, don't use non-exit servers unless
- requested to do so. This allows servers with broken DNS to be
- useful to the network.
- - Start passing "ipv4" hints to getaddrinfo(), so servers don't do
- useless IPv6 DNS resolves.
- - Specify and implement client-side SOCKS5 interface for reverse DNS
- lookups (see doc/socks-extensions.txt). Also cache them.
- - When we change nameservers or IP addresses, reset and re-launch
- our tests for DNS hijacking.
- o Improvements on reachability testing:
- - Servers send out a burst of long-range padding cells once they've
- established that they're reachable. Spread them over 4 circuits,
- so hopefully a few will be fast. This exercises bandwidth and
- bootstraps them into the directory more quickly.
- - When we find our DirPort to be reachable, publish a new descriptor
- so we'll tell the world (reported by pnx).
- - Directory authorities now only decide that routers are reachable
- if their identity keys are as expected.
- - Do DirPort reachability tests less often, since a single test
- chews through many circuits before giving up.
- - Avoid some false positives during reachability testing: don't try
- to test via a server that's on the same /24 network as us.
- - Start publishing one minute or so after we find our ORPort
- to be reachable. This will help reduce the number of descriptors
- we have for ourselves floating around, since it's quite likely
- other things (e.g. DirPort) will change during that minute too.
- - Routers no longer try to rebuild long-term connections to directory
- authorities, and directory authorities no longer try to rebuild
- long-term connections to all servers. We still don't hang up
- connections in these two cases though
- more carefully to avoid flapping, and we likely need to wait til
- 0.1.1.x is obsolete.
- o Improvements on rate limiting:
- - Enable write limiting as well as read limiting. Now we sacrifice
- capacity if we're pushing out lots of directory traffic, rather
- than overrunning the user's intended bandwidth limits.
- - Include TLS overhead when counting bandwidth usage; previously, we
- would count only the bytes sent over TLS, but not the bytes used
- to send them.
- - Servers decline directory requests much more aggressively when
- they're low on bandwidth. Otherwise they end up queueing more and
- more directory responses, which can't be good for latency.
- - But never refuse directory requests from local addresses.
- - Be willing to read or write on local connections (e.g. controller
- connections) even when the global rate limiting buckets are empty.
- - Flush local controller connection buffers periodically as we're
- writing to them, so we avoid queueing 4+ megabytes of data before
- trying to flush.
- - Revise and clean up the torrc.sample that we ship with; add
- a section for BandwidthRate and BandwidthBurst.
- o Major features, NT services:
- - Install as NT_AUTHORITY\LocalService rather than as SYSTEM; add a
- command-line flag so that admins can override the default by saying
- "tor
- existing installed services. Also, warn the user that the service
- will look for its configuration file in the service user's
- %appdata% directory. (We can't do the "hardwire the user's appdata
- directory" trick any more, since we may not have read access to that
- directory.)
- - Support running the Tor service with a torrc not in the same
- directory as tor.exe and default to using the torrc located in
- the %appdata%\Tor\ of the user who installed the service. Patch
- from Matt Edman.
- - Add an
- get the "use sensible defaults if the configuration file doesn't
- exist" behavior even when specifying a torrc location on the
- command line.
- - When stopping an NT service, wait up to 10 sec for it to actually
- stop. (Patch from Matt Edman; resolves bug 295.)
- o Directory authority improvements:
- - Stop letting hibernating or obsolete servers affect uptime and
- bandwidth cutoffs.
- - Stop listing hibernating servers in the v1 directory.
- - Authorities no longer recommend exits as guards if this would shift
- too much load to the exit nodes.
- - Authorities now specify server versions in networkstatus. This adds
- about 2% to the size of compressed networkstatus docs, and allows
- clients to tell which servers support BEGIN_DIR and which don't.
- The implementation is forward-compatible with a proposed future
- protocol version scheme not tied to Tor versions.
- - DirServer configuration lines now have an orport= option so
- clients can open encrypted tunnels to the authorities without
- having downloaded their descriptors yet. Enabled for moria1,
- moria2, tor26, and lefkada now in the default configuration.
- - Add a BadDirectory flag to network status docs so that authorities
- can (eventually) tell clients about caches they believe to be
- broken. Not used yet.
- - Allow authorities to list nodes as bad exits in their
- approved-routers file by fingerprint or by address. If most
- authorities set a BadExit flag for a server, clients don't think
- of it as a general-purpose exit. Clients only consider authorities
- that advertise themselves as listing bad exits.
- - Patch from Steve Hildrey: Generate network status correctly on
- non-versioning dirservers.
- - Have directory authorities allow larger amounts of drift in uptime
- without replacing the server descriptor: previously, a server that
- restarted every 30 minutes could have 48 "interesting" descriptors
- per day.
- - Reserve the nickname "Unnamed" for routers that can't pick
- a hostname: any router can call itself Unnamed; directory
- authorities will never allocate Unnamed to any particular router;
- clients won't believe that any router is the canonical Unnamed.
- o Directory mirrors and clients:
- - Discard any v1 directory info that's over 1 month old (for
- directories) or over 1 week old (for running-routers lists).
- - Clients track responses with status 503 from dirservers. After a
- dirserver has given us a 503, we try not to use it until an hour has
- gone by, or until we have no dirservers that haven't given us a 503.
- - When we get a 503 from a directory, and we're not a server, we no
- longer count the failure against the total number of failures
- allowed for the object we're trying to download.
- - Prepare for servers to publish descriptors less often: never
- discard a descriptor simply for being too old until either it is
- recommended by no authorities, or until we get a better one for
- the same router. Make caches consider retaining old recommended
- routers for even longer.
- - Directory servers now provide 'Pragma: no-cache' and 'Expires'
- headers for content, so that we can work better in the presence of
- caching HTTP proxies.
- - Stop fetching descriptors if you're not a dir mirror and you
- haven't tried to establish any circuits lately. (This currently
- causes some dangerous behavior, because when you start up again
- you'll use your ancient server descriptors.)
- o Major fixes, crashes:
- - Stop crashing when the controller asks us to resetconf more than
- one config option at once. (Vidalia 0.0.11 does this.)
- - Fix a longstanding obscure crash bug that could occur when we run
- out of DNS worker processes, if we're not using eventdns. (Resolves
- bug 390.)
- - Fix an assert that could trigger if a controller quickly set then
- cleared EntryNodes. (Bug found by Udo van den Heuvel.)
- - Avoid crash when telling controller about stream-status and a
- stream is detached.
- - Avoid sending junk to controllers or segfaulting when a controller
- uses EVENT_NEW_DESC with verbose nicknames.
- - Stop triggering asserts if the controller tries to extend hidden
- service circuits (reported by mwenge).
- - If we start a server with ClientOnly 1, then set ClientOnly to 0
- and hup, stop triggering an assert based on an empty onion_key.
- - Mask out all signals in sub-threads; only the libevent signal
- handler should be processing them. This should prevent some crashes
- on some machines using pthreads. (Patch from coderman.)
- - Disable kqueue on OS X 10.3 and earlier, to fix bug 371.
- o Major fixes, anonymity/security:
- - Automatically avoid picking more than one node from the same
- /16 network when constructing a circuit. Add an
- "EnforceDistinctSubnets" option to let people disable it if they
- want to operate private test networks on a single subnet.
- - When generating bandwidth history, round down to the nearest
- 1k. When storing accounting data, round up to the nearest 1k.
- - When we're running as a server, remember when we last rotated onion
- keys, so that we will rotate keys once they're a week old even if
- we never stay up for a week ourselves.
- - If a client asked for a server by name, and there's a named server
- in our network-status but we don't have its descriptor yet, we
- could return an unnamed server instead.
- - Reject (most) attempts to use Tor circuits with length one. (If
- many people start using Tor as a one-hop proxy, exit nodes become
- a more attractive target for compromise.)
- - Just because your DirPort is open doesn't mean people should be
- able to remotely teach you about hidden service descriptors. Now
- only accept rendezvous posts if you've got HSAuthoritativeDir set.
- - Fix a potential race condition in the rpm installer. Found by
- Stefan Nordhausen.
- - Do not log IPs with TLS failures for incoming TLS
- connections. (Fixes bug 382.)
- o Major fixes, other:
- - If our system clock jumps back in time, don't publish a negative
- uptime in the descriptor.
- - When we start during an accounting interval before it's time to wake
- up, remember to wake up at the correct time. (May fix bug 342.)
- - Previously, we would cache up to 16 old networkstatus documents
- indefinitely, if they came from nontrusted authorities. Now we
- discard them if they are more than 10 days old.
- - When we have a state file we cannot parse, tell the user and
- move it aside. Now we avoid situations where the user starts
- Tor in 1904, Tor writes a state file with that timestamp in it,
- the user fixes her clock, and Tor refuses to start.
- - Publish a new descriptor after we hup/reload. This is important
- if our config has changed such that we'll want to start advertising
- our DirPort now, etc.
- - If we are using an exit enclave and we can't connect, e.g. because
- its webserver is misconfigured to not listen on localhost, then
- back off and try connecting from somewhere else before we fail.
- o New config options or behaviors:
- - When EntryNodes are configured, rebuild the guard list to contain,
- in order: the EntryNodes that were guards before; the rest of the
- EntryNodes; the nodes that were guards before.
- - Do not warn when individual nodes in the configuration's EntryNodes,
- ExitNodes, etc are down: warn only when all possible nodes
- are down. (Fixes bug 348.)
- - Put a lower-bound on MaxAdvertisedBandwidth.
- - Start using the state file to store bandwidth accounting data:
- the bw_accounting file is now obsolete. We'll keep generating it
- for a while for people who are still using 0.1.2.4-alpha.
- - Try to batch changes to the state file so that we do as few
- disk writes as possible while still storing important things in
- a timely fashion.
- - The state file and the bw_accounting file get saved less often when
- the AvoidDiskWrites config option is set.
- - Make PIDFile work on Windows.
- - Add internal descriptions for a bunch of configuration options:
- accessible via controller interface and in comments in saved
- options files.
- - Reject *:563 (NNTPS) in the default exit policy. We already reject
- NNTP by default, so this seems like a sensible addition.
- - Clients now reject hostnames with invalid characters. This should
- avoid some inadvertent info leaks. Add an option
- AllowNonRFC953Hostnames to disable this behavior, in case somebody
- is running a private network with hosts called @, !, and
- - Check for addresses with invalid characters at the exit as well,
- and warn less verbosely when they fail. You can override this by
- setting ServerDNSAllowNonRFC953Addresses to 1.
- - Remove some options that have been deprecated since at least
- 0.1.0.x: AccountingMaxKB, LogFile, DebugLogFile, LogLevel, and
- SysLog. Use AccountingMax instead of AccountingMaxKB, and use Log
- to set log options. Mark PathlenCoinWeight as obsolete.
- - Stop accepting certain malformed ports in configured exit policies.
- - When the user uses bad syntax in the Log config line, stop
- suggesting other bad syntax as a replacement.
- - Add new config option "ResolvConf" to let the server operator
- choose an alternate resolve.conf file when using eventdns.
- - If one of our entry guards is on the ExcludeNodes list, or the
- directory authorities don't think it's a good guard, treat it as
- if it were unlisted: stop using it as a guard, and throw it off
- the guards list if it stays that way for a long time.
- - Allow directory authorities to be marked separately as authorities
- for the v1 directory protocol, the v2 directory protocol, and
- as hidden service directories, to make it easier to retire old
- authorities. V1 authorities should set "HSAuthoritativeDir 1"
- to continue being hidden service authorities too.
- - Remove 8888 as a LongLivedPort, and add 6697 (IRCS).
- - Make TrackExitHosts case-insensitive, and fix the behavior of
- ".suffix" TrackExitHosts items to avoid matching in the middle of
- an address.
- - New DirPort behavior: if you have your dirport set, you download
- descriptors aggressively like a directory mirror, whether or not
- your ORPort is set.
- o Docs:
- - Create a new file ReleaseNotes which was the old ChangeLog. The
- new ChangeLog file now includes the notes for all development
- versions too.
- - Add a new address-spec.txt document to describe our special-case
- addresses: .exit, .onion, and .noconnnect.
- - Fork the v1 directory protocol into its own spec document,
- and mark dir-spec.txt as the currently correct (v2) spec.
- o Packaging, porting, and contrib
- - "tor --verify-config" now exits with -1(255) or 0 depending on
- whether the config options are bad or good.
- - The Debian package now uses
- to distinguish configuration errors from other errors.
- - Adapt a patch from goodell to let the contrib/exitlist script
- take arguments rather than require direct editing.
- - Prevent the contrib/exitlist script from printing the same
- result more than once.
- - Add support to tor-resolve tool for reverse lookups and SOCKS5.
- - In the hidden service example in torrc.sample, stop recommending
- esoteric and discouraged hidden service options.
- - Patch from Michael Mohr to contrib/cross.sh, so it checks more
- values before failing, and always enables eventdns.
- - Try to detect Windows correctly when cross-compiling.
- - Libevent-1.2 exports, but does not define in its headers, strlcpy.
- Try to fix this in configure.in by checking for most functions
- before we check for libevent.
- - Update RPMs to require libevent 1.2.
- - Experimentally re-enable kqueue on OSX when using libevent 1.1b
- or later. Log when we are doing this, so we can diagnose it when
- it fails. (Also, recommend libevent 1.1b for kqueue and
- win32 methods; deprecate libevent 1.0b harder; make libevent
- recommendation system saner.)
- - Build with recent (1.3+) libevents on platforms that do not
- define the nonstandard types "u_int8_t" and friends.
- - Remove architecture from OS X builds. The official builds are
- now universal binaries.
- - Run correctly on OS X platforms with case-sensitive filesystems.
- - Correctly set maximum connection limit on Cygwin. (This time
- for sure!)
- - Start compiling on MinGW on Windows (patches from Mike Chiussi
- and many others).
- - Start compiling on MSVC6 on Windows (patches from Frediano Ziglio).
- - Finally fix the openssl warnings from newer gccs that believe that
- ignoring a return value is okay, but casting a return value and
- then ignoring it is a sign of madness.
- - On architectures where sizeof(int)>4, still clamp declarable
- bandwidth to INT32_MAX.
- o Minor features, controller:
- - Warn the user when an application uses the obsolete binary v0
- control protocol. We're planning to remove support for it during
- the next development series, so it's good to give people some
- advance warning.
- - Add STREAM_BW events to report per-entry-stream bandwidth
- use. (Patch from Robert Hogan.)
- - Rate-limit SIGNEWNYM signals in response to controllers that
- impolitely generate them for every single stream. (Patch from
- mwenge; closes bug 394.)
- - Add a REMAP status to stream events to note that a stream's
- address has changed because of a cached address or a MapAddress
- directive.
- - Make REMAP stream events have a SOURCE (cache or exit), and
- make them generated in every case where we get a successful
- connected or resolved cell.
- - Track reasons for OR connection failure; make these reasons
- available via the controller interface. (Patch from Mike Perry.)
- - Add a SOCKS_BAD_HOSTNAME client status event so controllers
- can learn when clients are sending malformed hostnames to Tor.
- - Specify and implement some of the controller status events.
- - Have GETINFO dir/status
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