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dbus 1.12.20 (2020-07-02)
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=========================

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The temporary nemesis release.

Maybe security fixes:

 On Unix, avoid a use-after-free if two usernames have the same
  numeric uid. In older versions this could lead to a crash (denial of
  service) or other undefined behaviour, possibly including incorrect
  authorization decisions if <policy group=...> is used.
  Like Unix filesystems, D-Bus' model of identity cannot distinguish
  between users of different names with the same numeric uid, so this
  configuration is not advisable on systems where D-Bus will be used.
  Thanks to Daniel Onaca.
  (dbus#305, dbus!166; Simon McVittie)

Other fixes:

• On Solaris and its derivatives, if a cmsg header is truncated, ensure
  that we do not overrun the buffer used for fd-passing, even if the
  kernel tells us to.
  (dbus#304, dbus!165; Andy Fiddaman)
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dbus 1.12.18 (2020-06-02)
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=========================

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The “telepathic vines” release.

Denial of service fixes:

• CVE-2020-12049: If a message contains more file descriptors than can
  be sent, close those that did get through before reporting error.
  Previously, a local attacker could cause the system dbus-daemon (or
  another system service with its own DBusServer) to run out of file
  descriptors, by repeatedly connecting to the server and sending fds that
  would get leaked.
  Thanks to Kevin Backhouse of GitHub Security Lab.
  (dbus#294, GHSL-2020-057; Simon McVittie)

Other fixes:
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• Fix a crash when the dbus-daemon is terminated while one or more
  monitors are active (dbus#291, dbus!140; Simon McVittie)
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• The dbus-send(1) man page now documents --bus and --peer instead of
  the old --address synonym for --peer, which has been deprecated since
  the introduction of --bus and --peer in 1.7.6
  (fd.o #48816, dbus!115; Chris Morin)

• Fix a wrong environment variable name in dbus-daemon(1)
  (dbus#275, dbus!122; Mubin, Philip Withnall)

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• Fix formatting of dbus_message_append_args example
  (dbus!126, Felipe Franciosi)

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• Avoid a test failure on Linux when built in a container as uid 0, but
  without the necessary privileges to increase resource limits
  (dbus!58, Debian #908092; Simon McVittie)

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• When building with CMake, cope with libX11 in a non-standard location
  (dbus!129, Tuomo Rinne)

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dbus 1.12.16 (2019-06-11)
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=========================

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The “tree cat” release.

Security fixes:

• CVE-2019-12749: Do not attempt to carry out DBUS_COOKIE_SHA1
  authentication for identities that differ from the user running the
  DBusServer. Previously, a local attacker could manipulate symbolic
  links in their own home directory to bypass authentication and connect
  to a DBusServer with elevated privileges. The standard system and
  session dbus-daemons in their default configuration were immune to this
  attack because they did not allow DBUS_COOKIE_SHA1, but third-party
  users of DBusServer such as Upstart could be vulnerable.
  Thanks to Joe Vennix of Apple Information Security.
  (dbus#269, Simon McVittie)
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dbus 1.12.14 (2019-05-17)
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=========================

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The “reclaimed floorboards” release.

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Enhancements:

• Raise soft fd limit to match hard limit, even if unprivileged.
  This makes session buses with many clients, or with clients that make
  heavy use of fd-passing, less likely to suffer from fd exhaustion.
  (dbus!103, Simon McVittie)

Fixes:

• If a privileged dbus-daemon has a hard fd limit greater than 64K, don't
  reduce it to 64K, ensuring that we can put back the original fd limits
  when carrying out traditional (non-systemd) activation. This fixes a
  regression with systemd >= 240 in which system services inherited
  dbus-daemon's hard and soft limit of 64K fds, instead of the intended
  soft limit of 1K and hard limit of 512K or 1M.
  (dbus!103, Debian#928877; Simon McVittie)

• Fix build failures caused by an AX_CODE_COVERAGE API change in newer
  autoconf-archive versions (dbus#249, dbus!88; Simon McVittie)

• Fix build failures with newer autoconf-archive versions that include
  AX_-prefixed shell variable names (dbus#249, dbus!86; Simon McVittie)

• Parse section/group names in .service files according to the syntax
  from the Desktop Entry Specification, rejecting control characters
  and non-ASCII in section/group names (dbus#208, David King)

• Fix various -Wlogical-op issues that cause build failure with newer
  gcc versions (dbus#225, dbus!109; David King)

• Don't assume we can set permissions on a directory, for the benefit of
  MSYS and Cygwin builds (dbus#216, dbus!110; Simon McVittie)

 Don't overwrite PKG_CONFIG_PATH and related environment variables when
  the pkg-config-based version of DBus1Config is used in a CMake project
  (dbus#267, dbus!96; Clemens Lang)
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1.12.12  
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dbus 1.12.12 (2018-12-04)
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1.12.11  
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=========================

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1.12.12  
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The “draconic disciple” release.

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dbus version control is now hosted on freedesktop.org's Gitlab
installation, and bug reports and feature requests have switched from
Bugzilla bugs (indicated by "fd.o #nnn") to Gitlab issues ("dbus#nnn")
and merge requests ("dbus!nnn").

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Enhancements:

 Reference the freedesktop.org Code of Conduct (Simon McVittie)

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Fixes:

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 Stop the dbus-daemon leaking memory (an error message) if delivering
  the message that triggered auto-activation is forbidden. This is
  technically a denial of service because the dbus-daemon will
  run out of memory eventually, but it's a very slow and noisy one,
  because all the rejected messages are also very likely to have
  been logged to the system log, and its scope is typically limited by
  the finite number of activatable services available.
  (dbus#234, Simon McVittie)

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• Remove __attribute__((__malloc__)) attribute on dbus_realloc(),
  which does not meet the criteria for that attribute in gcc 4.7+,
  potentially leading to miscompilation (fd.o #107741, Simon McVittie)

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• Fix some small O(1) memory leaks (fd.o #107320, Simon McVittie)
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1.12.11  
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• Fix printf formats for pointer-sized integers on 64-bit Windows
  (fd.o #105662, Ralf Habacker)

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• Always use select()-based poll() emulation on Darwin-based OSs
  (macOS, etc.) and on Interix, similar to what libcurl does
  (dbus#232, dbus!19; Simon McVittie)

• Extend a test timeout to avoid spurious failures in CI
  (dbus!26, Simon McVittie)

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Tests and CI:

• Add Travis-CI builds for 64-bit Windows using mingw-w64
  (fd.o #105662, Ralf Habacker)

• Add Gitlab-CI integration (fd.o #108177, Simon McVittie)

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1.12.10  
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dbus 1.12.10 (2018-08-02)
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=========================

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1.12.10  
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The “beam deflection” release.

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Fixes:

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• Prevent reading up to 3 bytes beyond the end of a truncated message.
  This could in principle be an information leak or denial of service
  on the system bus, but is not believed to be exploitable to crash
  the system bus or leak interesting information in practice.
  (fd.o #107332, Simon McVittie)

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• Fix build with gcc 8 -Werror=cast-function-type
  (fd.o #107349, Simon McVittie)

• Fix warning from gcc 8 about suspicious use of strncpy() when
  populating struct sockaddr_un (fd.o #107350, Simon McVittie)

• Fix a minor memory leak when a DBusServer listens on a new address
  (fd.o #107194, Simon McVittie)

• Fix an invalid NULL argument to rmdir() if a nonce-tcp DBusServer
  runs out of memory (fd.o #107194, Simon McVittie)

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• Don't use misleading errno-derived error names if getaddrinfo() or
  getnameinfo() fails with a code other than EAI_SYSTEM
  (fd.o #106395, Simon McVittie)

 Skip tests that require working TCP if we are in a container environment
  where 127.0.0.1 cannot be resolved (fd.o #106812, Simon McVittie)
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1.12.8  
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dbus 1.12.8 (2018-04-30)
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========================

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The golden super-velociraptor release.

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Enhancements:

 The Devhelp documentation index is now in version 2 format
  (fd.o #106186, Simon McVittie)

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 Give the dbus-daemon man page some scarier warnings about
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  <allow_anonymous/> and non-local TCP, which are insecure and should
  not be used, particularly for the standard system and session buses
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  (fd.o #106004, Simon McVittie)

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Fixes:

 Fix installation of Ducktype documentation with newer yelp-build
  versions (fd.o #106171, Simon McVittie)

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dbus 1.12.6 (2018-03-01)
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========================

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1.12.6  
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The just the one swan, actually release.

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Fixes:

 Increase system dbus-daemon's RLIMIT_NOFILE rlimit before it drops
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  privileges, because it won't have permission afterwards. This fixes a
  regression in dbus 1.10.18 and 1.11.0 which made the standard system bus
  more susceptible to deliberate or accidental denial of service.
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  (fd.o #105165, David King)
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1.12.4  
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dbus 1.12.4 (2018-02-08)
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========================

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1.12.4  
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The Stria Campania 115 release.

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Fixes:

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 When iterating the DBusConnection while blocking on a pending call,
  don't wait for I/O if that pending call already has a result; and make
  sure that whether it has a result is propagated in a thread-safe way.
  This prevents certain multi-threaded calling patterns from blocking
  until their timeout even when they should have succeeded sooner.
  (fd.o #102839; Manish Narang, Michael Searle)

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• Report the correct error if OOM is reached while trying to listen
  on a TCP socket (fd.o #89104, Simon McVittie)

• Fix assertion failures in recovery from OOM while setting up a
  DBusServer (fd.o #89104, Simon McVittie)

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• Add a missing space to a warning message (fd.o #103729, Thomas Zajic)
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• Expand ${bindir} correctly when pkg-config is asked for dbus_daemondir
  (fd.o #104265, Benedikt Heine)

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• On Linux systems with systemd < 237, if ${localstatedir}/dbus doesn't
  exist, create it before trying to create ${localstatedir}/dbus/machine-id
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  (fd.o #104577, Chris Lesiak)

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 Fix escaping in dbus-api-design document (fd.o #104925, Philip Withnall)

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1.12.2  
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dbus 1.12.2 (2017-11-13)
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========================

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1.12.2  
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The spider pumpkin release.
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Enhancements:

 Log a warning if a new connection cannot be accepted due to an
  out-of-memory condition or failure to identify its AppArmor or
  SELinux context (fd.o #103592, Simon McVittie)

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Fixes:

 Make use of $(MKDIR_P) compatible with install-sh, fixing build when a
  GNU-compatible `mkdir -p` is not available (fd.o #103521, ilovezfs)

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 When building for Windows with Autotools, avoid `echo -e`, fixing
  cross-compilation on non-GNU platforms like macOS
  (fd.o #103493, Tony Theodore)

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 Fix crashes in the server side of the nonce-tcp: transport under
  various error conditions. This transport should normally only be used
  on Windows, where AF_UNIX sockets are unavailable; the unix: transport
  is the only one recommended for production use on Unix platforms.
  (fd.o #103597, Simon McVittie)

Internal changes:

 Improve test coverage on Travis-CI (Simon McVittie)

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dbus 1.12.0 (2017-10-30)
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========================

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The gingerbread skull release.

1.12.x is a new stable branch, recommended for use in OS
distributions.
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Summary of major changes between 1.10.x and 1.12.0
--------------------------------------------------

Dependencies:

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 Expat >= 2.1.0 is required.
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 GLib >= 2.40 is required if full test coverage is enabled.
 [Linux] libselinux >= 2.0.86 is required if SELinux support is
  enabled.
 [Unix] dbus now requires an <inttypes.h> that defines C99 constants
  such as PRId64 and PRIu64, except when building for Windows.
 [Autotools] Building from git (but not from tarballs) with Autotools
  now requires macros from the GNU Autoconf Archive.
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 [CMake] Builds done using CMake now require CMake 3.0.2.
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Build-time configuration changes:

 Expat is now found using pkg-config. See the release notes for
  1.11.14.
 The --disable-compiler-optimisations and --enable-compiler-coverage
  options no longer exist.  See the release notes for 1.11.4 and 1.11.8.
 [Unix] The --enable-abstract-sockets and --disable-abstract-sockets
  options no longer exist. See the release notes for 1.11.20.
 [Unix] Flag files in /var/run/console/${username} are no longer
  checked for at_console by default. See the release notes for 1.11.18.
 [Unix, Cygwin] Init scripts are no longer provided by upstream dbus,
  and packagers will now need to add these downstream (most already do).
  See the release notes for 1.11.18.
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 [Unix] The process ID file no longer has a different default location
  on Red Hat derivatives. See the release notes for 1.11.18.
 [Unix] ${runstatedir} is now independent of ${localstatedir} with
  recent Autotools versions. See the release notes for 1.11.16.
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 [Windows] The WINDRES variable is no longer used. See the release
  notes for 1.11.22.

Deprecations:

 Eavesdropping is officially deprecated in favour of BecomeMonitor.
  See the release notes for spec version 0.31 (in dbus 1.11.14).
 [Unix] Flag files in /var/run/console/${username} are deprecated.
  See the release notes for 1.11.18.

New APIs:

 <allow> and <deny> rules in dbus-daemon configuration can now
  include send_broadcast="true", send_broadcast="false",
  max_unix_fds="N", min_unix_fds="N" (for some integer N).
  See the release notes for 1.11.18.
 dbus_try_get_local_machine_id() is like
  dbus_get_local_machine_id(), but returns a DBusError.
 New APIs around DBusMessageIter to simplify cleanup.
  See the release notes for 1.11.16.
 The message bus daemon now implements the standard Introspectable,
  Peer and Properties interfaces. See the release notes for
  dbus 1.11.14 and spec version 0.31.
 DTDs for introspection XML and bus configuration are installed.
 dbus can be compiled to be relocatable, making it more suitable for
  binary bundling with other software. On Windows, this is on by
  default.
 [Unix] A new unix:dir= address family resembles unix:tmpdir= but
  never uses Linux abstract sockets, which is advantageous for
  containers. On non-Linux it is equivalent to unix:tmpdir=.
  See the release notes for dbus 1.11.14 and spec version 0.31.
 [Unix] New option "dbus-launch --exit-with-x11".
 [Unix] Session managers can create transient .service files in
  $XDG_RUNTIME_DIR/dbus-1/services. See the release notes for 1.11.12.
 [Unix] A sysusers.d snippet can create the messagebus user on-demand.

Miscellaneous behaviour changes:

 [Unix] The session bus now logs to syslog if it was started by
  dbus-launch.
 [Unix] Internal warnings are logged to syslog if configured.
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 [Unix] Exceeding an anti-DoS limit is logged to syslog if configured,
  or to stderr.
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Changes since 1.11.22 release candidate
---------------------------------------

Standard stable-branch changes:
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 Disable warnings about use of deprecated functions (Simon McVittie)
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Fixes:

 Don't distribute files generated by ./configure in the source tarball
  (fd.o #103420, Simon McVittie)

Internal changes:

• Remove some unused files from the git repository
  (fd.o #103420, Simon McVittie)
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D-Bus 1.11.22 (2017-10-23)
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==========================
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The “fire surface” release.

This is the first release-candidate for the 1.12.0 stable release.

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Build-time configuration changes:

• When building for Windows with Autotools, setting the WINDRES variable
  no longer works to select a non-standard resource compiler. Use
  libtool's standard RC variable instead, for example
  "./configure RC=i686-w64-mingw32-windres"

Dependencies:

 Builds done using CMake now require CMake 3.0.2.

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Enhancements:

 When building for Windows, improve quality of metadata in
  libdbus-1-3.dll (fd.o #103015, Ralf Habacker)

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Fixes:

 Fix a typo "uint 16" in dbus-send(1) man page
  (fd.o #103075, David King)

 When building for Windows, libdbus-1-3.dll always includes version
  information. Previously, this was missing if using CMake and any
  non-MSVC compiler. (fd.o #103015, Ralf Habacker)

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 Fix the build with MSVC, which regressed with the #102558 fix in
  1.11.20. (fd.o #102558, Ralf Habacker)

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Internal changes:

 Simplify Windows resource embedding
  (fd.o #103015, Simon McVittie)
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D-Bus 1.11.20 (2017-10-03)
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==

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The wraith stun release.

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Build-time configuration changes:

 The --enable-abstract-sockets and --disable-abstract-sockets options
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  no longer exist. Support for Linux's abstract AF_UNIX sockets is now
  unconditionally enabled on Linux and disabled everywhere else.
  (fd.o #34905, Simon McVittie)
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Enhancements:

• Make slower tests less likely to time out, and improve diagnostics if
  tests do time out (fd.o #103009, Simon McVittie)

• On Windows, don't compile an unused stub implementation of
  _dbus_set_signal_handler() (fd.o #103010, Simon McVittie)

Fixes:

 Be more careful to save and restore errno in POSIX async signal
  handlers (fd.o #103010, Simon McVittie)

 On Windows, embed a manifest in dbus-update-activation-environment.exe
  so that the heuristics used for UAC do not assume it needs elevated
  privileges due to its name containing "update"
  (fd.o #102558, Ralf Habacker)

 On Windows with Automake, embed version information in libdbus-1,
  as was meant to happen in all versions since 2009
  (fd.o #103015, Simon McVittie)
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D-Bus 1.11.18 (2017-09-25)
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==

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The vampire conquistador release.

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Build-time configuration changes:

 By default, dbus-daemon on Unix no longer checks for flag files
  /var/run/console/${username} created by the obsolete pam_console and
  pam_foreground PAM modules when deciding whether ${username} is
  currently at the console. The old default behaviour can be restored
  by specifying --with-console-auth-dir=/var/run/console in the
  recommended Autotools build system, or
  -DDBUS_CONSOLE_AUTH_DIR=/var/run/console in CMake. This feature is
  now deprecated, and will be removed in dbus 1.13 unless feedback via
  fd.o #101629 indicates that this would be problematic.
  (fd.o #101629, Simon McVittie)

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 LSB-style init scripts for Red Hat and Slackware, and a non-LSB init
  script for Cygwin, are no longer provided in the upstream dbus
  source. We recommend that distributors who support non-systemd service
  management should maintain their own init scripts or other service
  manager integration as part of their downstream packaging, similar to
  the way Debian distributes a Debian-specific LSB init script for dbus.

  The systemd unit continues to be maintained as part of the upstream
  dbus source, because it receives regular testing and maintenance.

  (fd.o #101706, Simon McVittie)

 The process ID file created by the system bus is no longer influenced
  by the --with-init-scripts=redhat configure option or the presence of
  /etc/redhat-release at build time. If your OS's init script or other
  service management relies on the Red Hat-style pid file, it can be
  restored by specifying --with-system-pid-file=/run/messagebus.pid at
  configure time or using the <pidfile> directive in bus configuration.

  Note that the upstream-supplied systemd unit runs dbus-daemon with
  the --nopidfile option, so it does not normally write a pid file,
  regardless of whether the OS is Red-Hat-derived or not.

  (fd.o #101706, Simon McVittie)

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Enhancements:

• <allow> and <deny> rules in dbus-daemon configuration can now
  include send_broadcast="true" or send_broadcast="false", which make
  the rule only match broadcast signals, or only match messages that
  are not broadcast signals, respectively.
  (fd.o #29853, Simon McVittie)

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• <allow> and <deny> rules can now be configured to apply only to
  messages with or without Unix file descriptors attached. This would
  typically be used in rules like these:
  <allow send_destination="..." max_unix_fds="0"/>
  <deny send_destination="..." min_unix_fds="1"/>
  <deny receive_sender="..." min_unix_fds="1"/>
  but can also be used to set a nonzero upper limit on the number of
  file descriptors:
  <allow send_destination="..." max_unix_fds="4"/>
  (fd.o #101848, Simon McVittie)

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• On Unix platforms, the DBUS_COOKIE_SHA1 authentication mechanism
  now respects the HOME environment variable on the client side, and
  on the server side when the uid attempting to connect is the same
  as the uid of the server. This allows the automated tests to pass in
  environments where the user's "official" home directory in /etc/passwd
  is nonexistent, such as Debian autobuilders.
  (fd.o #101960, Simon McVittie)

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Fixes:

 When parsing dbus-daemon configuration, tell Expat not to use
  cryptographic-quality entropy as a salt for its hash tables: we trust
  the configuration files, so we are not concerned about algorithmic
  complexity attacks via hash table collisions. This prevents
  dbus-daemon --system from holding up the boot process (and causing
  early-boot system services like systemd, logind, networkd to time
  out) on entropy-starved embedded systems.
  (fd.o #101858, Simon McVittie)
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 Avoid a -Werror=declaration-after-statement build failure on Solaris
  (fd.o #102145, Alan Coopersmith)

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 On Unix platform, drop DBUS_SYSTEM_LOG_INFO messages from LOG_NOTICE
  to LOG_INFO, matching how we use this log level in practice
  (fd.o #102686, Simon McVittie)

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D-Bus 1.11.16 (2017-07-27)
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==

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1.11.16  
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The south facing garden release.

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Build-time configuration changes:

 The Autotools build system now supports varying ${runstatedir}
  independently of ${localstatedir}, if using an Autoconf version
  that has that feature; version 2.70 will eventually have this, but
  many Linux distributions add it to version 2.69 as a patch.
  A typical use is to set prefix=/usr, sysconfdir=/etc, localstatedir=/var
  and runstatedir=/run. (fd.o #101569, Simon McVittie)
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Enhancements:

 New APIs DBUS_MESSAGE_ITER_INIT_CLOSED, dbus_message_iter_init_closed()
  and dbus_message_iter_abandon_container_if_open() simplify the
  single-exit-point ("goto out") style of resource cleanup. The API
  documentation around DBusMessageIter and containers has also been
  clarified. (fd.o #101568, Simon McVittie)

Fixes:

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 Fix the implementation of re-enabling a timeout (again) so that its
  countdown is always restarted as intended. (fd.o #95619,
  Michal Koutný)

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 Make the dbus-daemon's Properties interface, as introduced in 1.11.14,
  available to all users on the system bus (fd.o #101700, Simon McVittie)

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• dbus_message_iter_append_basic() no longer leaks memory if it fails to
  append a file descriptor to a message. (fd.o #101568, Simon McVittie)

• dbus_message_iter_open_container() no longer leaks memory if it runs out
  of memory. (fd.o #101568, Simon McVittie)

• dbus_message_append_args_valist() no longer leaks memory if given an
  unsupported type. This situation is still considered to be a programming
  error which needs to be corrected by the user of libdbus.
  (fd.o #101568, Simon McVittie)

• dbus_message_iter_append_basic() and dbus_message_iter_open_container()
  will no longer report that their arguments were invalid if they run out
  of memory at exactly the wrong time. (fd.o #101568, Simon McVittie)

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• Ensure that tests fail if they would otherwise have tried to connect to
  the real session bus (fd.o #101698, Simon McVittie)

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• Make build-time tests cope with finding Python 3, but not Python 2
  (fd.o #101716, Simon McVittie)

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Internal changes relevant to dbus developers:

• DBusVariant is a new mechanism to copy single values from a message into
  a buffer without copying the entire message (fd.o #101568, Simon McVittie)

• DBUS_SYSTEM_LOG_FATAL has been replaced by DBUS_SYSTEM_LOG_ERROR.
  Logging an ERROR message does not make the process exit; the caller
  is responsible for calling abort() or exit(), whichever is more appropriate.
  (fd.o #101568, Simon McVittie)

• Better test coverage (fd.o #101568, Simon McVittie)

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D-Bus 1.11.14 (2017-06-29)
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==

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1.11.14  
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The “irrational fear of bees” release.

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Dependencies:

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• Expat >= 2.1.0 is always required
• libselinux >= 2.0.86 is required if SELinux support is enabled
• GLib >= 2.40 is required if full test coverage is enabled
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Build-time configuration changes:

• We now use pkg-config to find libexpat in Autotools builds. This requires
  Expat 2.1.0 (March 2012) or later. In particular, this should remove the
  need to configure with LDFLAGS=-L/usr/local/lib on OpenBSD, which can
  itself cause compilation failures.

  As with all pkg-config-based configure checks, you can use
  PKG_CONFIG_PATH=/whatever/lib/pkgconfig to find expat.pc in a
  non-standard prefix, or EXPAT_CFLAGS="-I/whatever/include" and
  EXPAT_LIBS="-L/whatever/lib -lexpat" to avoid needing a .pc file
  at all.

  (fd.o #69801, Simon McVittie)
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• Similarly, we now use pkg-config to find libselinux. Version 2.0.86
  is required due to the removal of explicit refcounting for SIDs.
  (fd.o #100912, Laurent Bigonville)
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Behaviour changes:

• Previously, /etc/machine-id could be copied to /var/lib/dbus/machine-id
  as a side-effect of a sufficiently privileged process merely reading the
  machine ID. It is no longer copied as a side-effect of reading.
  Running dbus-uuidgen --ensure, which should be done after installing dbus,
  continues to copy /etc/machine-id to /var/lib/dbus/machine-id if the
  former exists and the latter does not.
  (fd.o #101257, Simon McVittie)

• The undocumented Verbose interface, and the GetAllMatchRules method on
  the undocumented Stats interface, must now be used via the object path
  /org/freedesktop/DBus. Previously, they existed on all object paths.
  (fd.o #101257, Simon McVittie)

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• AddMatch() with a match rule containing eavesdrop='true' will now fail
  unless called by either the same user as the dbus-daemon, or Unix uid 0
  (root), matching the restrictions applied to the newer BecomeMonitor()
  method. On the session bus this has no practical effect. On the system
  bus this will prevent certain configurations that already did not
  work well in practice. (fd.o #101567, Simon McVittie)

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Enhancements:

• D-Bus Specification version 0.31
  · Don't require implementation-specific search paths to be lowest
    priority
  · Correct regex syntax for optionally-escaped bytes in addresses so it
    includes hyphen-minus, forward slash and underscore as intended
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  · Describe all message bus methods in the same section
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  · Clarify the correct object path for method calls to the message bus
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    (/org/freedesktop/DBus, DBUS_PATH_DBUS in the reference implementation)
  · Document that the message bus implements Introspectable, Peer and
    Properties
  · Add new Features and Interfaces properties for message bus
    feature-discovery
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  · Add unix:dir=..., which resembles unix:tmpdir=... but never uses
    abstract sockets
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  · Don't require eavesdrop='true' to be accepted from connections not
    sufficiently privileged to use it successfully
  · Formally deprecate eavesdropping in favour of BecomeMonitor
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  (fd.o #99825, #100686, #100795, #101256, #101257, #101567;
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  Simon McVittie, Tom Gundersen)

• Implement the Properties and Peer interfaces in dbus-daemon
  (fd.o #101257, Simon McVittie)
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• New function dbus_try_get_local_machine_id() is like
  dbus_get_local_machine_id(), but returning a DBusError. Other code
  that needs the machine ID will now report a recoverable error (instead
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  of logging to stderr and aborting) if no machine ID is available.
  Generating a machine ID is still considered to be a required part of
  installing dbus correctly. (fd.o #13194, Simon McVittie)
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• Implement GetConnectionSELinuxSecurityContext("org.freedesktop.DBus")
  (fd.o #101315, Laurent Bigonville)

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• Avoid deprecated API calls when using SELinux
  (fd.o #100912, Laurent Bigonville)

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• Switch a test from the deprecated g_test_trap_fork() to
  g_test_trap_subprocess(), for Windows support and better robustness
  on Unix (fd.o #101362, Simon McVittie)

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• On systemd systems, if ${localstatedir}/dbus/machine-id doesn't exist,
  instruct systemd-tmpfiles to make it a symbolic link to /etc/machine-id.
  This prevents the two files from going out of sync on stateless or live
  images without needing to run dbus-uuidgen, and supports older D-Bus
  implementations that do not necessarily read /etc/machine-id themselves.
  (fd.o #101570, Simon McVittie)

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 Implement unix:dir=..., which resembles unix:tmpdir=... but never uses
  abstract sockets. This is preferable when used with Linux containers.
  (fd.o #101567, Simon McVittie)

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Fixes:

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 Fix a reference leak when blocking on a pending call on a connection
  that has been disconnected (fd.o #101481, Shin-ichi MORITA)

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 Don't put timestamps in the Doxygen-generated documentation,
  or hard-code the build directory into builds with embedded tests,
  for reproducible builds (fd.o #100692, Simon McVittie)
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• Fix some integration test issues (fd.o #100686, Simon McVittie)

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• Fix memory leaks in the tests (fd.o #101257, Simon McVittie)

• If we somehow get an autolaunch address with multiple semicolon-separated
  components, and they don't work, don't invalidly "pile up" errors
  (fd.o #101257, Simon McVittie)

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Documentation:

• Update git URIs in HACKING document to sync up with cgit.freedesktop.org
  (fd.o #100715, Simon McVittie)
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1.11.12  
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D-Bus 1.11.12 (2017-04-07)
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==

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The “it's something humans do release.

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Enhancements:

 The session dbus-daemon now supports transient .service files
  in $XDG_RUNTIME_DIR/dbus-1/services. Unlike the other standard
  service directories, this directory is not monitored with inotify
  or similar, and the service files must be named exactly
  ${bus_name}.service. (fd.o #99825, Simon McVittie)

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 dbus can be configured with --enable-relocation when building with
  Autotools, or with -DDBUS_RELOCATABLE=ON when building with cmake,
  to make the pkg-config metadata relocatable. This is useful for
  non-standard prefixes, and in particular for Windows installations.
  However, it is not recommended for system-wide installations into
  /usr, because it interferes with pkg-config's ability to filter out
  compiler default linker directories.

  With Autotools, the default is --enable-relocation when building
  for Windows or --disable-relocation otherwise. With CMake, the default
  is -DDBUS_RELOCATABLE=ON.

  (fd.o #99721; Ralf Habacker, Simon McVittie)

• Users of CMake ≥ 2.6 can now link to libdbus without providing their
  own FindDBus.cmake macros, whether dbus was compiled with Autotools
  or with CMake. See the end of README.cmake for more information.
  (fd.o #99721; Ralf Habacker, Simon McVittie)

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Fixes:

• Always read service file directories in the intended order
  (fd.o #99825, Simon McVittie)

• When tests are skipped, don't try to kill nonexistent process 0
  (fd.o #99825, Simon McVittie)
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 Avoid valgrind false positives (fd.o #88808, Philip Withnall)

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 Fix a harmless read overflow and some memory leaks in a unit test
  (fd.o #100568, Philip Withnall)

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 Fix some typos in test code
  (fd.o #99999, Coverity #141876, #141877; Philip Withnall)

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 Clarify the roles of /etc/dbus-1/s*.d and /usr/share/dbus-1/s*.d
  in documentation (fd.o #99901, Philip Withnall)

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 Fix and enable compiler warnings related to -Wswitch
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  (fd.o #98191; Thomas Zimmermann, Simon McVittie)

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 Fix writing off the end of a fd_set when testing with valgrind
  (fd.o #99839, Philip Withnall)

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D-Bus 1.11.10 (2017-02-16)
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==

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The purple hair gives you telekinesis? release.

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Dependencies:

 AppArmor support requires at least libapparmor 2.8.95, reduced
  from 2.10 in previous versions. One test requires 2.10 and is
  skipped if building with an older version.

Enhancements:

 Do the Travis-CI build in Docker containers for Ubuntu LTS, Debian
  stable and Debian testing in addition to the older Ubuntu that is
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  the default (fd.o #98889, Simon McVittie)
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 Avoid some deprecated CMake functions (fd.o #99586, Ralf Habacker)
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 Silence many -Wswitch-enum and -Wswitch-default warnings
  (fd.o #98191; Thomas Zimmermann, Simon McVittie)

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 Install a sysusers.d snippet so `dbus-daemon --system` can be used
  with an unpopulated /etc (fd.o #99162, Lennart Poettering)

 Install pkg-config metadata on Unix even if building with CMake
  (fd.o #99752, Ralf Habacker)

 Exclude auth mechanisms from REJECTED message if they are supported
  in the code but but configured to be disallowed (fd.o #99621,
  Ralf Habacker)

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Fixes:

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 Prevent symlink attacks in the nonce-tcp transport on Unix that could
  allow an attacker to overwrite a file named "nonce", in a directory
  that the user running dbus-daemon can write, with a random value
  known only to the user running dbus-daemon. This is unlikely to be
  exploitable in practice, particularly since the nonce-tcp transport
  is really only useful on Windows.

  On Unix systems we strongly recommend using only the unix: and systemd:
  transports, together with EXTERNAL authentication. These are the only
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  transports and authentication mechanisms enabled by default.
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  (fd.o #99828, Simon McVittie)

 Avoid symlink attacks in the "embedded tests", which are not enabled
  by default and should never be enabled in production builds of dbus.
  (fd.o #99828, Simon McVittie)
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 Fix the implementation of re-enabling a timeout so that its
  countdown is restarted as intended, instead of continually
  decreasing. (fd.o #95619; Michal Koutný, Simon McVittie)

 When receiving a message with file descriptors, do not start reading
  the beginning of the next message, so that only one such message
  is processed at a time. In conjunction with the fix for #95619
  this means that processes sending many file descriptors, such as
  systemd-logind on a system that receives very rapid ssh connections,
  are not treated as abusive and kicked off the bus. Revert the previous
  workaround that special-cased uid 0.
  (fd.o #95263, LP#1591411; Simon McVittie)

 Do not require TMPDIR, TEMP or TMP to be set when cross-compiling
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  for Windows with CMake (fd.o #99586, Ralf Habacker)
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 Do not set Unix-specific variables when targeting Windows
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  (fd.o #99586, Ralf Habacker)
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 Install Unix executables to ${CMAKE_INSTALL_PREFIX}/bin as intended,
  not ${CMAKE_INSTALL_PREFIX}/lib (fd.o #99752, Ralf Habacker)

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 Use relative install locations in CMake on Unix to respect DESTDIR,
  and use GNU-style install layout (fd.o #99721, #99752; Ralf Habacker)
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 Install dbus-arch-deps.h correctly when using CMake
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  (fd.o #99586, #99721; Ralf Habacker)
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 Improve argument validation for `dbus-test-tool spam`
  (ffd.o #99693, Coverity #54759; Philip Withnall)

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 Don't shift by a negative integer if a hash table becomes monstrously
  large (fd.o #99641, Coverity #54682; Philip Withnall)

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• Don't leak LSM label if dbus-daemon runs out of memory when dealing with
  a new connection (fd.o #99612, Coverity #141058; Philip Withnall)

 Remove an unnecessary NULL check
  (fd.o #99642, Coverity #141062; Philip Withnall)

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 Improve error handling in unit tests and dbus-send
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  (fd.o #99643, #99694, #99712, #99722, #99723, #99724, #99758,
  #99759, #99793, Coverity #54688, #54692, #54693, #54697, #54701,
  #54710, #54711, #54714, #54715, #54718, #54721, #54724, #54726,
  #54730, #54740, #54822, #54823, #54824, #54825; Philip Withnall)
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 Do not print verbose messages' timestamps to stderr if the actual message
  has been redirected to the Windows debug port (fd.o #99749, Ralf Habacker)

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D-Bus 1.11.8 (2016-11-28)
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==

912 913
The “panics in the face of breakfast foods” release.

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Build-time configuration:

• The new --enable-debug configure option provides an easy way to
  enable debug symbols, disable optimization and/or enable profiling.

• The --enable-compile-warnings configure option can be used to control
  compiler warnings.

• The --disable-compiler-optimisations configure option is no longer
  supported. Use --enable-debug=yes or CFLAGS=-O0 instead.

Enhancements:

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• D-Bus Specification version 0.30
  · Define the jargon term "activation" more clearly
  · Define the jargon term "auto-starting", which is one form of activation
  · Document the optional SystemdService key in service files
  · Use versioned interface and bus names in most examples
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  · Clarify intended behaviour of Properties.GetAll
  (fd.o #36190, fd.o #98671; Philip Withnall, Simon McVittie)
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• Fix and enable a lot of compiler warnings to improve future code
  quality. This might incidentally also fix some environment variable
  accesses on OS X.
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  · In particular, printf-style functions in the libdbus API are now annotated
    with __attribute__((__format__(__printf__, *, *))) when compiling with
    gcc or clang. This might make printf bugs in other software visible
    at compile time.
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  (fd.o #97357, fd.o #98192, fd.o #98195, fd.o #98658;
  Thomas Zimmermann, Simon McVittie)

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• When running with AppArmor mediation (for example using Ubuntu's patched
  Linux kernel), clients can no longer auto-start services unless they would
  have been able to send the auto-starting message to the service after it
  starts. StartServiceByName() is unaffected, and continues to be allowed by
  default in AppArmor's <abstractions/dbus-strict> and
  <abstractions/dbus-session-strict>. (fd.o #98666, Simon McVittie)

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Fixes:

• Work around an undesired effect of the fix for CVE-2014-3637
  (fd.o #80559), in which processes that frequently send fds, such as
  logind during a flood of new PAM sessions, can get disconnected for
  continuously having at least one fd "in flight" for too long;
  dbus-daemon interprets that as a potential denial of service attack.
  The workaround is to disable that check for uid 0 process such as
  logind, with a message in the system log. The bug remains open while
  we look for a more general solution.
  (fd.o #95263, LP#1591411; Simon McVittie)
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• Don't run the test test-dbus-launch-x11.sh if X11 autolaunching
  was disabled at compile time. That test is not expected to work
  in that configuration. (fd.o #98665, Simon McVittie)

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D-Bus 1.11.6 (2016-10-10)
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==

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The darkly whimsical release.

Security fixes:

 Do not treat ActivationFailure message received from root-owned systemd
  name as a format string. In principle this is a security vulnerability,
  but we do not believe it is exploitable in practice, because only
  privileged processes can own the org.freedesktop.systemd1 bus name, and
  systemd does not appear to send activation failures that contain "%".

  Please note that this probably *was* exploitable in dbus versions
  older than 1.6.30, 1.8.16 and 1.9.10 due to a missing check which at
  the time was only thought to be a denial of service vulnerability
  (CVE-2015-0245). If you are still running one of those versions,
  patch or upgrade immediately.

  (fd.o #98157, Simon McVittie)

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Enhancements:

 D-Bus Specification version 0.29
  · Recommend not using '/' for object paths (fd.o #37095, Philip Withnall)
  · Allow <annotation> in <arg> elements (fd.o #86162, Philip Withnall)

 Log to syslog when we exceed various anti-DoS limits, and add test
  coverage for them (fd.o #86442, Simon McVittie)

 Improve syslog handling so that _dbus_warn() and similar warnings
  go to syslog, add dbus-daemon --syslog|--nosyslog|--syslog-only options,
  and log to syslog (instead of /dev/null) when dbus-daemon is started by
  dbus-launch. (fd.o #97009, Simon McVittie)

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 Install introspect.dtd and busconfig.dtd to ${datadir}/xml/dbus-1
  (fd.o #89011, Philip Withnall)

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 When logging messages about service activation, mention which peer
  requested the activation (fd.o #68212, Philip Withnall)

 On Linux, mention the LSM label (if available) whenever we print
  debug information about a peer (fd.o #68212, Philip Withnall)

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Other fixes:

 Harden dbus-daemon against malicious or incorrect ActivationFailure
  messages by rejecting them if they do not come from a privileged
  process, or if systemd activation is not enabled
  (fd.o #98157, Simon McVittie)
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 Avoid undefined behaviour when setting reply serial number without going
  via union DBusBasicValue (fd.o #98035, Marc Mutz)

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 Fix CMake build for Unix platforms that do not have -lrt, such as Android,
  or that do need -lsocket, such as QNX (fd.o #94096, Ralf Habacker)

 autogen.sh: fail cleanly if autoconf fails (Simon McVittie)
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D-Bus 1.11.4 (2016-08-15)
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==

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The copper pickaxe release.

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Dependencies:

 Building from git (but not from tarballs) now requires
  macros from the GNU Autoconf Archive, for example the autoconf-archive
  package in Debian or Fedora derivatives.

Build-time configuration:

 The option to enable coverage instrumentation has changed from
  --enable-compiler-coverage to --enable-code-coverage.

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Enhancements:

 D-Bus Specification version 0.28
  · Clarify some details of serialization (fd.o #93382, Philip Withnall)

 Increase listen() backlog of AF_UNIX sockets to the maximum possible,
  minimizing failed connections under heavy load
  (fd.o #95264, Lennart Poettering)

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 Add a new dbus-launch --exit-with-x11 option (fd.o #39197, Simon McVittie)

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 Use the same regression tests for subprocess starting on Unix and Windows
  (fd.o #95191, Ralf Habacker)

 Print timestamps and thread IDs in verbose messages
  (fd.o #95191, Ralf Habacker)

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 On Unix, unify the various places that reopen stdin, stdout and/or stderr
  pointing to /dev/null (fd.o #97008, Simon McVittie)

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 Use AX_CODE_COVERAGE instead of our own COMPILER_COVERAGE
  (fd.o #88922, Thomas Zimmermann)

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Fixes:

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 On Windows, fix a memory leak in replacing the installation prefix
  (fd.o #95191, Ralf Habacker)

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 On Linux, when dbus-daemon is run with reduced susceptibility to the
  OOM killer (typically via systemd), do not let child processes inherit
  that setting (fd.o #32851; Kimmo Hämäläinen, WaLyong Cho)

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 On Unix, make dbus-launch and dbus-daemon --fork work as intended
  even if a parent process incorrectly starts them with stdin, stdout
  and/or stderr closed (fd.o #97008, Simon McVittie)

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 Output valid shell syntax in ~/.dbus/session-bus/ if the bus address
  contains a semicolon (fd.o #94746, Thiago Macieira)

 Fix memory leaks and thread safety in subprocess starting on Windows
  (fd.o #95191, Ralf Habacker)

 Stop test-dbus-daemon incorrectly failing on platforms that cannot
  discover the process ID of clients (fd.o #96653, Руслан Ижбулатов)

 In tests that exercise correct handling of crashing D-Bus services,
  suppress Windows crash handler (fd.o #95155; Yiyang Fei, Ralf Habacker)
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 Explicitly check for stdint.h (Ioan-Adrian Ratiu)

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 In tests, add an invalid DBusAuthState to avoid undefined behaviour
  in some test cases (fd.o #93909, Nick Lewycky)

 Add assertions to reassure a static analysis tool
  (fd.o #93210, Deepika Aggarwal)

 Be explicit about enum comparison when loading XML
  (fd.o #93205, Deepika Aggarwal)

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 update-activation-environment: produce better diagnostics on error
  (fd.o #96653, Simon McVittie)

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 Avoid various compiler warnings with gcc 6
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  (fd.o #97282; Thomas Zimmermann, Simon McVittie)

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 On Unix when configured to use the system log, report as "dbus-daemon",
  not as "dbus" (fd.o #97009, Simon McVittie)

 During unit tests, reduce the amount we write to the system log
  (fd.o #97009, Simon McVittie)

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D-Bus 1.11.2 (2016-03-07)
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==

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The pneumatic drill vs. Iron Maiden release.

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Fixes:

 Enable "large file support" on systems where it exists: dbus-daemon
  is not expected to open large files, but it might need to stat files
  that happen to have large inode numbers (fd.o #93545, Hongxu Jia)

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 Eliminate padding inside DBusMessageIter on 64-bit platforms,
  which might result in a pedantic C compiler not copying the entire contents
  of a DBusMessageIter; statically assert that this is not an ABI change
  in practice (fd.o #94136, Simon McVittie)

 Document dbus-test-tool echo --sleep-ms=N instead of incorrect --sleep=N
  (fd.o #94244, Dmitri Iouchtchenko)

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 Correctly report test failures in C tests from run-test.sh
  (fd.o #93379; amit tewari, Simon McVittie)

 When tests are enabled, run all the marshal-validate tests, not just
  the even-numbered ones (fd.o #93908, Nick Lewycky)

 Correct the expected error from one marshal-validate test, which was
  previously not run due to the above bug (fd.o #93908, Simon McVittie)
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 Fix compilation under CMake when embedded tests are disabled
  (fd.o #94094, eric.hyer)

Internal changes:

 Fix all -Wpointer-sign (signed/unsigned mismatch) warnings, and enable the
  warning (fd.o #93069; Ralf Habacker, Simon McVittie)

 When building with CMake, use the same gcc/clang warnings as under Autotools,
  or MSVC warnings that are broadly similar (fd.o #93069, Ralf Habacker)

 test/name-test: make C tests produce TAP output and run them directly, not
  via run-test.sh (fd.o #92899, Simon McVittie)

 Under CMake when cross-compiling for Windows on Unix, run the tests
  under Wine even if binfmt_misc support is not available
  (fd.o #88966, Ralf Habacker)

 The DBUS_USE_TEST_BINARY environment variable is no longer used by builds with
  embedded tests; DBUS_TEST_DBUS_LAUNCH replaces it (fd.o #92899, Simon McVittie)

 Factor out some functions that will be needed in future for a Windows
  implementation of dbus-run-session (fd.o #92899, Ralf Habacker)

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D-Bus 1.11.0 (2015-12-02)
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==

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The peppermint deer release.

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Dependencies:

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 On non-Windows platforms, dbus now requires an <inttypes.h> that defines
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  C99 constants such as PRId64 and PRIu64.

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Enhancements:

 D-Bus Specification version 0.27
  · Specify that services should not reply if NO_REPLY_EXPECTED was used
    (fd.o #75749, Lars Uebernickel)

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 Add a script to do continuous-integration builds, and metadata to run it
  on travis-ci.org. To use this, clone the dbus git repository on GitHub
  and set it up with travis-ci.org; the only special setting needed is
  "only build branches with a .travis.yml". (fd.o #93194, Simon McVittie)

 If dbus-daemon is run with --systemd-activation, do not require
  org.freedesktop.systemd1.service to exist (fd.o #93194, Simon McVittie)

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Fixes:

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 Re-order dbus-daemon startup so that on SELinux systems, the thread
  that reads AVC notifications retains the ability to write to the
  audit log (fd.o #92832, Laurent Bigonville)

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 Print 64-bit integers on non-GNU Unix platforms (fd.o #92043, Natanael Copa)

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 When using the Monitoring interface, match messages' destinations
  (fd.o #92074, Simon McVittie)

• On Linux with systemd, stop installing a reference to the obsolete
  dbus.target, and enable dbus.socket statically (fd.o #78412, #92402;
  Simon McVittie)

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• On Windows, when including configuration files with <include> or
  <includedir>, apply the same relocation as for the Exec paths
  in .service files (fd.o #92028, Simon McVittie)

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• Add support for backtraces on Windows (fd.o #92721, Ralf Habacker)

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• Fix many -Wpointer-sign warnings (fd.o #93069, Ralf Habacker)
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D-Bus 1.10.6 (2015-12-01)
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==

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The “marzipan beetles” release.

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Fixes:

• On Unix when running tests as root, don't assert that root and
  the dbus-daemon user can still call UpdateActivationEnvironment;
  assert that those privileged users can call BecomeMonitor instead
  (fd.o #93036, Simon McVittie)

 On Windows, fix a memory leak in the autolaunch transport (fd.o #92899,
  Simon McVittie)

 On Windows Autotools builds, don't run tests that rely on
  dbus-run-session and other Unix-specifics (fd.o #92899, Simon McVittie)

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D-Bus 1.10.4 (2015-11-17)
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The “Frostburn Canyon” release.

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Enhancements:

• GetConnectionCredentials, GetConnectionUnixUser and
  GetConnectionUnixProcessID with argument "org.freedesktop.DBus"
  will now return details of the dbus-daemon itself. This is required
  to be able to call SetEnvironment on systemd.
  (fd.o #92857, Jan Alexander Steffens)

Fixes:

• Make UpdateActivationEnvironment always fail with AccessDenied on the
  system bus. Previously, it was possible to configure it so root could
  call it, but the environment variables were not actually used,
  because the launch helper would discard them.
  (fd.o #92857, Jan Alexander Steffens)

• On Unix with --systemd-activation on a user bus, make
  UpdateActivationEnvironment pass on its arguments to systemd's
  SetEnvironment method, solving inconsistency between the environments
  used for traditional activation and systemd user-service activation.
  (fd.o #92857, Jan Alexander Steffens)

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 On Windows, don't crash if <syslog/> or --syslog is used
  (fd.o #92538, Ralf Habacker)

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• On Windows, fix a memory leak when setting a DBusError from a Windows
  error (fd.o #92721, Ralf Habacker)

• On Windows, don't go into infinite recursion if we abort the process
  with backtraces enabled (fd.o #92721, Ralf Habacker)

 Fix various failing tests, variously on Windows and cross-platform:
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  · don't test system.conf features (users, groups) that only make sense
    on the system bus, which is not supported on Windows
  · don't call _dbus_warn() when we skip a test, since it is fatal
  · fix computation of expected <standard_session_servicedirs/>
  · when running TAP tests, translate newlines to Unix format, fixing
    cross-compiled tests under Wine on Linux
  · don't stress-test refcounting under Wine, where it's really slow
  · stop assuming that a message looped-back to the test will be received
    immediately
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  · skip some system bus tests on Windows since they make no sense there
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  (fd.o #92538, fd.o #92721; Ralf Habacker, Simon McVittie)
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D-Bus 1.10.2 (2015-10-26)
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==

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The worst pies in London release.

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Fixes:

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 Correct error handling for activation: if there are multiple attempts
  to activate the same service and it fails immediately, the first attempt
  would get the correct reply, but the rest would time out. We now send
  the same error reply to each attempt. (fd.o #92200, Simon McVittie)

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 If BecomeMonitor is called with a syntactically invalid match rule,
  don't crash with an assertion failure, fixing a regression in 1.9.10.
  This was not exploitable as a denial of service, because the check
  for a privileged user is done first. (fd.o #92298, Simon McVittie)

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• On Linux with --enable-user-session, add the bus address to the
  environment of systemd services for better backwards compatibility
  (fd.o #92612, Jan Alexander Steffens)