--- /dev/null
+ Changelog for the c-ares project
+
+Version 1.7.5 (August 16, 2011)
+
+Fixed:
+
+ o detection of semicolon comments in resolv.conf
+ o avoid using system's inet_net_pton affected by the WLB-2008080064 advisory
+ o replacement ares_inet_net_pton affected by the WLB-2008080064 advisory
+ o replacement ares_inet_ntop affected by potential out of bounds write
+ o added install target to Makefile.msvc
+ o only fall back to AF_INET searches when looking for AF_UNSPEC addresses
+ o fixed ares_parse_*_reply memory leaks
+ o Use correct sizeof in ares_getnameinfo()
+ o IPv6-on-windows: find DNS servers correctly
+ o man pages: docs for the c-ares utility programs
+ o getservbyport replacement for Win CE
+ o config_sortlist: (win32) missing else
+ o advance_tcp_send_queue: avoid NULL ptr dereference
+ o configure: fix a bashism
+ o ares_expand_name: Fix encoded length for indirect root
+
+Version 1.7.4 (December 9, 2010)
+
+Changed:
+
+ o local-bind: Support binding to local interface/IPs, see
+ ares_set_local_ip4, ares_set_local_ip6, ares_set_local_dev
+
+Fixed:
+
+ o memory leak in ares_getnameinfo
+ o add missing break that caused get_ares_servers to fail
+ o ares_parse_a_reply: fix CNAME response parsing
+ o init_by_options: don't copy an empty sortlist
+ o Replaced uint32_t with unsigned int to fix broken builds
+ on a couple of platforms
+ o Fix lookup with HOSTALIASES set
+ o adig: fix NAPTR parsing
+ o compiler warning cleanups
+
+Version 1.7.3 (June 11, 2010)
+
+Fixed:
+
+ o builds on Android
+ o now includes all files necessary to build it (1.7.2 lacked a file)
+
+Version 1.7.2 (June 10, 2010)
+
+Changed:
+
+ o Added ares_parse_mx_reply()
+
+Fixed:
+
+ o ares_init: Last, not first instance of domain or search should win
+ o improve alternative definition of bool
+ o fix VS2010 compiler warnings
+
+
+Version 1.7.1 (Mar 23, 2010)
+
+* May 31, 2010 (Jakub Hrozek)
+- Use the last instance of domain/search, not the first one
+
+* March 23, 2010 (Daniel Stenberg)
+- We switched from CVS to git. See http://github.com/bagder/c-ares
+
+* March 5, 2010 (Daniel Stenberg)
+- Daniel Johnson provided fixes for building with the clang compiler.
+
+* March 5, 2010 (Yang Tse)
+- Added IPv6 name servers support. Implementation has been based on code,
+ comments and feedback provided November and December of 2008 by Daniel
+ Stenberg, Gregor Jasny, Phil Blundell and myself, December 2009 by Cedric
+ Bail, and February 2010 by Jakub Hrozek on the c-ares mailing list. On
+ March I reviewed all that, selected the best of each, and adjusted or
+ extended parts of it to make the best fit.
+
+ The external and visible result of all this is that two new functions are
+ added to the external API, ares_get_servers() and ares_set_servers(), which
+ becomes now the preferred way of getting and setting name servers for any
+ ares channel as these support both IPv4 and IPv6 name servers.
+
+ In order to not break ABI compatibility, ares_init_options() with option
+ mask ARES_OPT_SERVERS and ares_save_options() may still be used in code
+ which is intended to run on IPv4-only stacks. But remember that these
+ functions do not support IPv6 name servers. This implies that if the user
+ is capable of defining or providing an IPv6 name server, and the app is
+ using ares_init_options() or ares_save_options() at some point to handle
+ the name servers, the app will likely lose IPv6 name servers.
+
+* January 28, 2010 (Daniel Stenberg)
+- Tommie Gannert pointed out a silly bug in ares_process_fd() since it didn't
+ check for broken connections like ares_process() did. Based on that, I
+ merged the two functions into a single generic one with two front-ends.
+
+* December 29, 2009 (Yang Tse)
+- Laszlo Tamas Szabo adjusted Makefile.msvc compiler options so that where
+ run-time error checks enabling compiler option /GZ was used it is replaced
+ with equivalent /RTCsu for Visual Studio 2003 and newer versions. Option
+ /GX is replaced with equivalent /EHsc for all versions. Also fixed socket
+ data type for internal configure_socket function.
+
+* December 21, 2009 (Yang Tse)
+- Ingmar Runge noticed that Windows config-win32.h configuration file
+ did not include a definition for HAVE_CLOSESOCKET which resulted in
+ function close() being inappropriately used to close sockets.
+
+Version 1.7.0 (Nov 30, 2009)
+
+* November 26, 2009 (Yang Tse)
+- Larry Lansing fixed ares_parse_srv_reply to properly parse replies
+ which might contain non-SRV answers, skipping over potential non-SRV
+ ones such as CNAMEs.
+
+* November 23, 2009 (Yang Tse)
+- Changed naming convention for c-ares libraries built with MSVC, details
+ and build instructions provided in README.msvc file.
+
+* November 22, 2009 (Yang Tse)
+- Jakub Hrozek fixed more function prototypes in man pages to sync them
+ with the ones declared in ares.h
+
+- Jakub Hrozek renamed addrttl and addr6ttl structs to ares_addrttl and
+ ares_addr6ttl in order to prevent name space pollution, along with
+ necessary changes to code base and man pages.This change does not break
+ ABI, there is no need to recompile existing applications. But existing
+ applications using these structs with the old name will need source code
+ adjustments when recompiled using c-ares 1.7.0.
+
+* November 21, 2009 (Yang Tse)
+- Added manifest stuff to Makefile.msvc.
+
+* November 20, 2009 (Yang Tse)
+- Fixed several function prototypes in man pages that were out of sync
+ with the ones declared in ares.h. Added ares_free_data() along with
+ man page. Updated ares_parse_srv_reply() and ares_parse_txt_reply()
+ with changes from Jakub Hrozek making these now return linked lists
+ instead of arrays, and merging the ares_free_data() adjustments.
+
+* November 10, 2009 (Yang Tse)
+- Updated MSVC 6.0 project files to match settings from Makefile.msvc.
+
+* November 9, 2009 (Yang Tse)
+- Makefile.msvc is now the reference method to build c-ares and sample
+ programs with any MSVC compiler or MS Visual Studio version. If no
+ option or target are specified it builds dynamic and static c-ares
+ libraries in debug and release flavours and also builds all sample
+ programs using each of the different c-ares libraries.
+
+* November 2, 2009 (Yang Tse)
+- Renamed c-ares setup.h to ares_setup.h
+
+* October 31, 2009 (Yang Tse)
+- Symbol hiding configure options are named now --enable-symbol-hiding
+ and --disable-symbol-hiding in an attempt to make them less ambiguous.
+
+* October 30, 2009 (Yang Tse)
+- Many fixes for ares_parse_txt_reply()
+
+* October 29, 2009 (Daniel Stenberg)
+- Jakub Hrozek added ares_parse_txt_reply() for TXT parsing
+
+* October 29, 2009 (Yang Tse)
+- Updated MSVC 6.0 workspace and project files that allows building
+ dynamic and static c-ares libraries in debug and release flavours.
+ Additionally each of the three sample programs is built against
+ each of the four possible c-ares libraries, generating all this
+ a total number of 12 executables and 4 libraries.
+
+* October 28, 2009 (Yang Tse)
+- Initial step towards the ability to reduce c-ares exported symbols
+ when built as a shared library based on the 'visibility' attribute
+ for GNUC and Intel compilers and based on __global for Sun compilers,
+ taking also in account __declspec function decoration for Win32 and
+ Symbian DLL's.
+
+* October 27, 2009 (Yang Tse)
+- Fixed Pelles C Win32 target compilation issues.
+
+* October 23, 2009 (Yang Tse)
+- John Engelhart noticed an unreleased problem relative to a duplicate
+ ARES_ECANCELLED error code value and missing error code description.
+
+* October 7, 2009 (Yang Tse)
+- Overhauled ares__get_hostent() Fixing out of bounds memory overwrite
+ triggered with malformed /etc/hosts file. Improving parsing of /etc/hosts
+ file. Validating requested address family. Ensuring that failures always
+ return a NULL pointer. Adjusting header inclusions.
+
+* October 6, 2009 (Yang Tse)
+- Fix ssize_t redefinition errors on WIN64 reported by Alexey Simak.
+
+* September 29, 2009 (Yang Tse)
+- Make configure script also check if _REENTRANT definition is required to
+ make errno available as a preprocessor macro.
+
+* September 7, 2009 (Yang Tse)
+- Add T_SRV portability check to ares_parse_srv_reply.c
+
+* 4 Sep 2009 (Daniel Stenberg)
+- Jakub Hrozek added ares_parse_srv_reply() for SRV parsing
+
+* 3 Aug 2009 (Daniel Stenberg)
+- Joshua Kwan fixed the init routine to fill in the defaults for stuff that
+ fails to get inited by other means. This fixes a case of when the c-ares
+ init fails when internet access is fone.
+
+- Timo Teras changed the reason code used in the resolve callback done when
+ ares_cancel() is used, to be ARES_ECANCELLED instead of ARES_ETIMEOUT to
+ better allow the callback to know what's happening.
+
+* 14 Jul 2009 (Guenter Knauf)
+- renamed generated config.h to ares_config.h to avoid any future clashes
+ with config.h from other projects.
+
+* June 20 2009 (Yang Tse)
+- Refactor how libraries are checked for connect() function in configure
+ script and check for connect() as it is done for other functions.
+
+* June 19 2009 (Yang Tse)
+- Make sclose() function-like macro definition used to close a socket,
+ now solely based on HAVE_CLOSESOCKET and HAVE_CLOSESOCKET_CAMEL
+ config file preprocessor definitions
+
+* June 18 2009 (Yang Tse)
+- Add CloseSocket camel case function check for configure script.
+
+* June 17 2009 (Yang Tse)
+- Check for socket() and closesocket() as it is done for other functions
+ in configure script.
+
+* June 11 2009 (Yang Tse)
+- Modified buildconf so that when automake runs it copies missing files
+ instead of symlinking them.
+
+* June 8 2009 (Yang Tse)
+- Removed buildconf.bat from release and daily snapshot archives. This
+ file is only for CVS tree checkout builds.
+
+* May 26 2009 (Yang Tse)
+- Added --enable-curldebug configure option to enable and disable building
+ with the low-level curl debug memory tracking 'feature' to allow decoupled
+ setting from --enable-debug, allowing again to build c-ares independently
+ out of the CVS tree.
+
+ For the c-ares library option --enable-debug enables debug build features
+ which are _not_ related with memory tracking. For the c-ares library when
+ --enable-debug is given it does not enable the memory tracking feature. If
+ you wish to enable the curl debug memory tracking you must use configure
+ option --enable-curldebug explicitily to do so.
+
+ Internally, definition of preprocessor symbol DEBUGBUILD restricts code
+ which is only compiled for debug enabled builds. And symbol CURLDEBUG is
+ used to differentiate code which is _only_ used for memory tracking.
+
+ Make ares_init(), ares_dup() and ares_init_options() fail returning
+ ARES_ENOTINITIALIZED if library initialization has not been performed
+ calling ares_library_init().
+
+* May 20 2009 (Yang Tse)
+- Added ares_library_init() and ares_library_cleanup() man pages.
+
+* May 19 2009 (Yang Tse)
+- Introduced ares_library_init() and ares_library_cleanup() functions.
+
+ This is an API and ABI break for Win32/64 systems. Non-Win32/64 build targets
+ using c-ares 1.7.0 can still survive without calling these functions. Read all
+ the details on ares_library_init(3) and ares_library_cleanup(3) man pages that
+ are included.
+
+ curl/libcurl 7.19.5 is fully compatible with c-ares 1.7.0 on all systems.
+
+ In order to use c-ares 1.7.0 with curl/libcurl on Win32/64 systems it is
+ required that curl/libcurl is 7.19.5 or newer. In other words, it is not
+ possible on Win32/64 to use c-ares 1.7.0 with a curl/libcurl version less
+ than 7.19.5
+
+* May 11 2009 (Daniel Stenberg)
+- Gregor Jasny made c-ares link with libtool 's -export-symbols-regex option to
+ only expose functions starting with ares_.
+
+* May 7 2009 (Yang Tse)
+- Fix an m4 overquoting triggering a spurious 'AS_TR_CPP' symbol definition
+ attempt in generated config.h
+
+* May 2 2009 (Yang Tse)
+- Use a build-time configured ares_socklen_t data type instead of socklen_t.
+
+* April 21 2009 (Yang Tse)
+- Moved potential inclusion of system's malloc.h and memory.h header files to
+ setup_once.h. Inclusion of each header file is based on the definition of
+ NEED_MALLOC_H and NEED_MEMORY_H respectively.
+
+* March 11 2009 (Yang Tse)
+- Japheth Cleaver fixed acountry.c replacing u_long with unsigned long.
+
+* February 20 2009 (Yang Tse)
+- Do not halt compilation when using VS2008 to build a Windows 2000 target.
+
+* February 3 2009 (Phil Blundell)
+- If the server returns garbage or nothing at all in response to an AAAA query,
+ go on and ask for A records anyway.
+
+* January 31 2009 (Daniel Stenberg)
+- ares_gethostbyname() now accepts 'AF_UNSPEC' as a family for resolving
+ either AF_INET6 or AF_INET. It works by accepting any of the looksups in the
+ hosts file, and it resolves the AAAA field with a fallback to A.
+
+* January 14 2009 (Daniel Stenberg)
+- ares.h no longer uses the HAVE_STRUCT_IN6_ADDR define check, but instead it
+ now declares the private struct ares_in6_addr for all systems instead of
+ relying on one possibly not present in the system.
+
+* January 13 2009 (Phil Blundell)
+- ares__send_query() now varies the retry timeout pseudo-randomly to avoid
+ packet storms when several queries were started at the same time.
+
+* January 11 2009 (Daniel Stenberg)
+- Phil Blundell added the internal function ares__expand_name_for_response()
+ that is now used by the ares_parse_*_reply() functions instead of the
+ ares_expand_name() simply to easier return ARES_EBADRESP for the cases where
+ the name expansion fails as in responses that really isn't expected.
+
+Version 1.6.0 (Dec 9, 2008)
+
+* December 9 2008 (Gisle Vanem)
+
+ Fixes for Win32 targets using the Watt-32 tcp/ip stack.
+
+* Dec 4 2008 (Daniel Stenberg)
+
+ Gregor Jasny provided the patch that introduces ares_set_socket_callback(),
+ and I edited it to also get duped by ares_dup().
+
+* Dec 3 2008 (Daniel Stenberg)
+
+ API changes:
+
+ I made sure the public ares_config struct looks like before and yet it
+ supports the ROTATE option thanks to c-ares now storing the "optmask"
+ internally. Thus we should be ABI compatible with the past release(s)
+ now. My efforts mentioned below should not break backwards ABI compliance.
+
+ Here's how I suggest we proceed with the API:
+
+ ares_init() will be primary "channel creator" function.
+
+ ares_init_options() will continue to work exactly like now and before. For
+ starters, it will be the (only) way to set the existing options.
+
+ ares_save_options() will continue to work like today, but will ONLY save
+ options that you can set today (including ARES_OPT_ROTATE actually) but new
+ options that we add may not be saved with this.
+
+ Instead we introduce:
+
+ ares_dup() that instead can make a new channel and clone the config used
+ from an existing channel. It will then clone all config options, including
+ future new things we add.
+
+ ares_set_*() style functions that set (new) config options. As a start we
+ simply add these for new functionality, but over time we can also introduce
+ them for existing "struct ares_options" so that we can eventually deprecate
+ the two ares_*_options() functions.
+
+ ares_get_*() style functions for extracting info from a channel handle that
+ should be used instead of ares_save_options().
+
+* Nov 26 2008 (Yang Tse)
+- Brad Spencer provided changes to allow buildconf to work on OS X.
+
+- Gerald Combs fixed a bug in ares_parse_ptr_reply() which would cause a
+ buffer to shrink instead of expand if a reply contained 8 or more records.
+
+* Nov 25 2008 (Yang Tse)
+- In preparation for the upcomming IPv6 nameservers patch, the internal
+ ares_addr union is now changed into an internal struct which also holds
+ the address family.
+
+* Nov 19 2008 (Daniel Stenberg)
+- Brad Spencer brought the new function ares_gethostbyname_file() which simply
+ resolves a host name from the given file, using the regular hosts syntax.
+
+* Nov 1 2008 (Daniel Stenberg)
+- Carlo Contavalli added support for the glibc "rotate" option, as documented
+ in man resolv.conf:
+
+ causes round robin selection of nameservers from among those listed. This
+ has the effect of spreading the query load among all listed servers, rather
+ than having all clients try the first listed server first every time.
+
+ You can enable it with ARES_OPT_ROTATE
+
+* Oct 21 2008 (Yang Tse)
+ Charles Hardin added handling of EINPROGRESS for UDP connects.
+
+* Oct 18 2008 (Daniel Stenberg)
+ Charles Hardin made adig support a regular numerical dotted IP address for the
+ -s option as well.
+
+* Oct 7 2008 (Yang Tse)
+- Added --enable-optimize configure option to enable and disable compiler
+ optimizations to allow decoupled setting from --enable-debug.
+
+* Oct 2 2008 (Yang Tse)
+- Added --enable-warnings configure option to enable and disable strict
+ compiler warnings to allow decoupled setting from --enable-debug.
+
+* Sep 17 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of "nameser.h" to any
+ system that lacks arpa/nameser.h or arpa/nameser_compat.h header files.
+
+* Sep 16 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of ares_writev to any
+ system that lacks the writev function.
+
+* Sep 15 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of ares_strcasecmp to any
+ system that lacks the strcasecmp function.
+
+- Improve configure detection of some string functions.
+
+* Sep 11 2008 (Yang Tse)
+- Code reorganization to allow internal/private use of ares_strdup to any
+ system that lacks the strdup function.
+
+Version 1.5.3 (Aug 29, 2008)
+
+* Aug 25 2008 (Yang Tse)
+- Improvement by Brad House:
+
+ This patch addresses an issue in which a response could be sent back to the
+ source port of a client from a different address than the request was made to.
+ This is one form of a DNS cache poisoning attack.
+
+ The patch simply uses recvfrom() rather than recv() and validates that the
+ address returned from recvfrom() matches the address of the server we have
+ connected to. Only necessary on UDP sockets as they are connection-less, TCP
+ is unaffected.
+
+- Fix by George Neill:
+ Fixed compilation of acountry sample application failure on some systems.
+
+* Aug 4 2008 (Daniel Stenberg)
+- Fix by Tofu Linden:
+
+ The symptom:
+ * Users (usually, but not always) on 2-Wire routers and the Comcast service
+ and a wired connection to their router would find that the second and
+ subsequent DNS lookups from fresh processes using c-ares to resolve the same
+ address would cause the process to never see a reply (it keeps polling for
+ around 1m15s before giving up).
+
+ The repro:
+ * On such a machine (and yeah, it took us a lot of QA to find the systems
+ that reproduce such a specific problem!), do 'ahost www.secondlife.com',
+ then do it again. The first process's lookup will work, subsequent lookups
+ will time-out and fail.
+
+ The cause:
+ * init_id_key() was calling randomize_key() *before* it initialized
+ key->state, meaning that the randomness generated by randomize_key() is
+ immediately overwritten with deterministic values. (/dev/urandom was also
+ being read incorrectly in the c-ares version we were using, but this was
+ fixed in a later version.)
+ * This makes the stream of generated query-IDs from any new c-ares process
+ be an identical and predictable sequence of IDs.
+ * This makes the 2-Wire's default built-in DNS server detect these queries
+ as probable-duplicates and (erroneously) not respond at all.
+
+
+* Aug 4 2008 (Yang Tse)
+- Autoconf 2.62 has changed the behaviour of the AC_AIX macro which we use.
+ Prior versions of autoconf defined _ALL_SOURCE if _AIX was defined. 2.62
+ version of AC_AIX defines _ALL_SOURCE and other four preprocessor symbols
+ no matter if the system is AIX or not. To keep the traditional behaviour,
+ and an uniform one across autoconf versions AC_AIX is replaced with our
+ own internal macro CARES_CHECK_AIX_ALL_SOURCE.
+
+* Aug 1 2008 (Yang Tse)
+- Configure process now checks if the preprocessor _REENTRANT symbol is already
+ defined. If it isn't currently defined a set of checks are performed to test
+ if its definition is required to make visible to the compiler a set of *_r
+ functions. Finally, if _REENTRANT is already defined or needed it takes care
+ of making adjustments necessary to ensure that it is defined equally for the
+ configure process tests and generated config file.
+
+* Jul 20 2008 (Yang Tse)
+- When recvfrom prototype uses a void pointer for arguments 2, 5 or 6 this will
+ now cause the definition, as appropriate, of RECVFROM_TYPE_ARG2_IS_VOID,
+ RECVFROM_TYPE_ARG5_IS_VOID or RECVFROM_TYPE_ARG6_IS_VOID.
+
+* Jul 17 2008 (Yang Tse)
+- RECVFROM_TYPE_ARG2, RECVFROM_TYPE_ARG5 and RECVFROM_TYPE_ARG6 are now defined
+ to the data type pointed by its respective argument and not the pointer type.
+
+* Jul 16 2008 (Yang Tse)
+- Improved configure detection of number of arguments for getservbyport_r.
+ Detection is now based on compilation checks instead of linker ones.
+
+- Configure process now checks availability of recvfrom() socket function and
+ finds out its return type and the types of its arguments. Added definitions
+ for non-configure systems config files, and introduced macro sreadfrom which
+ will be used on udp sockets as a recvfrom() wrapper in the future.
+
+* Jul 15 2008 (Yang Tse)
+- Introduce definition of _REENTRANT symbol in setup.h to improve library
+ usability. Previously the configure process only used the AC_SYS_LARGEFILE
+ macro for debug builds, now it is also used for non-debug ones enabling the
+ use of configure options --enable-largefile and --disable-largefile which
+ might be needed for library compatibility. Remove checking the size of
+ curl_off_t, it is no longer needed.
+
+* Jul 3 2008 (Daniel Stenberg)
+- Phil Blundell: If you ask ares_gethostbyname() to do an AF_INET6 lookup and
+ the target host has only A records, it automatically falls back to an
+ AF_INET lookup and gives you the A results. However, if the target host has
+ a CNAME record, this behaviour is defeated since the original query does
+ return some data even though ares_parse_aaa_reply() doesn't consider it
+ relevant. Here's a small patch to make it behave the same with and without
+ the CNAME.
+
+* Jul 2 2008 (Yang Tse)
+- Fallback to gettimeofday when monotonic clock is unavailable at run-time.
+
+* Jun 30 2008 (Daniel Stenberg)
+
+- As was pointed out to me by Andreas Schuldei, the MAXHOSTNAMELEN define is
+ not posix or anything and thus c-ares failed to build on hurd (and possibly
+ elsewhere). The define was also somewhat artificially used in the windows
+ port. Now, I instead rewrote the use of gethostbyname to enlarge the host
+ name buffer in case of need and totally avoid the use of the MAXHOSTNAMELEN
+ define. I thus also removed the defien from the namser.h file where it was
+ once added for the windows build.
+
+ I also fixed init_by_defaults() function to not leak memory in case if
+ error.
+
+* Jun 9 2008 (Yang Tse)
+
+- Make libcares.pc generated file for pkg-config include information relative
+ to the libraries needed for the static linking of c-ares.
+
+* May 30 2008 (Yang Tse)
+
+- Brad House fixed a missing header file inclusion in adig sample program.
+
+Version 1.5.2 (May 29, 2008)
+
+* May 13 2008 (Daniel Stenberg)
+
+- Introducing millisecond resolution support for the timeout option. See
+ ares_init_options()'s ARES_OPT_TIMEOUTMS.
+
+* May 9 2008 (Yang Tse)
+
+- Use monotonic time source if available, for private function ares__tvnow()
+
+* May 7 2008 (Daniel Stenberg)
+
+- Sebastian made c-ares able to return all PTR-records when doing reverse
+ lookups. It is not common practice to have multiple PTR-Records for a single
+ IP, but its perfectly legal and some sites have those.
+
+- Doug Goldstein provided a configure patch: updates autoconf 2.13 usage to
+ autoconf 2.57 usage (which is the version you have specified as the minimum
+ version). It's a minor change but it does clean up some warnings with newer
+ autoconf (specifically 2.62).
+
+* May 5 2008 (Yang Tse)
+
+- Improved parsing of resolver configuration files.
+
+* April 4 2008 (Daniel Stenberg)
+
+- Eino Tuominen improved the code when a file is used to seed the randomizer.
+
+- Alexey Simak made adig support NAPTR records
+
+- Alexey Simak fixed the VC dsp file by adding the missing source file
+ ares_expand_string.c
+
+* December 11 2007 (Gisle Vanem)
+
+- Added another sample application; acountry.c which converts an
+ IPv4-address(es) and/or host-name(s) to country-name and country-code.
+ This uses the service of the DNSBL at countries.nerd.dk.
+
+* December 3 2007 (Daniel Stenberg)
+
+- Brad Spencer fixed the configure script to assume that there's no
+ /dev/urandom when built cross-compiled as then the script cannot check for
+ it.
+
+- Erik Kline cleaned up ares_gethostbyaddr.c:next_lookup() somewhat
+
+Version 1.5.1 (Nov 21, 2007)
+
+* November 21 2007 (Daniel Stenberg)
+
+- Robin Cornelius pointed out that ares_llist.h was missing in the release
+ archive for 1.5.0
+
+Version 1.5.0 (Nov 21, 2007)
+
+* October 2 2007 (Daniel Stenberg)
+
+- ares_strerror() segfaulted if the input error number was out of the currently
+ supported range.
+
+- Yang Tse: Avoid a segfault when generating a DNS "Transaction ID" in
+ internal function init_id_key() under low memory conditions.
+
+* September 28 2007 (Daniel Stenberg)
+
+- Bumped version to 1.5.0 for next release and soname bumped to 2 due to ABI
+ and API changes in the progress callback (and possibly more coming up from
+ Steinar)
+
+* September 28 2007 (Steinar H. Gunderson)
+
+- Don't skip a server if it's the only one. (Bugfix from the Google tree.)
+
+- Made the query callbacks receive the number of timeouts that happened during
+ the execution of a query, and updated documentation accordingly. (Patch from
+ the Google tree.)
+
+- Support a few more socket options: ARES_OPT_SOCK_SNDBUF and
+ ARES_OPT_SOCK_RCVBUF
+
+- Always register for TCP events even if there are no outstanding queries, as
+ the other side could always close the connection, which is a valid event
+ which should be responded to.
+
+* September 22 2007 (Daniel Stenberg)
+
+- Steinar H. Gunderson fixed: Correctly clear sockets from the fd_set on in
+ several functions (write_tcp_data, read_tcp_data, read_udp_packets) so that
+ if it fails and the socket is closed the following code doesn't try to use
+ the file descriptor.
+
+- Steinar H. Gunderson modified c-ares to now also do to DNS retries even when
+ TCP is used since there are several edge cases where it still makes sense.
+
+- Brad House provided a fix for ares_save_options():
+
+ Apparently I overlooked something with the ares_save_options() where it
+ would try to do a malloc(0) when no options of that type needed to be saved.
+ On most platforms, this was fine because malloc(0) doesn't actually return
+ NULL, but on AIX it does, so ares_save_options would return ARES_ENOMEM.
+
+* July 14 2007 (Daniel Stenberg)
+
+- Vlad Dinulescu fixed two outstanding valgrind reports:
+
+ 1. In ares_query.c , in find_query_by_id we compare q->qid (which is a short
+ int variable) with qid, which is declared as an int variable. Moreover,
+ DNS_HEADER_SET_QID is used to set the value of qid, but DNS_HEADER_SET_QID
+ sets only the first two bytes of qid. I think that qid should be declared as
+ "unsigned short" in this function.
+
+ 2. The same problem occurs in ares_process.c, process_answer() . query->qid
+ (an unsigned short integer variable) is compared with id, which is an
+ integer variable. Moreover, id is initialized from DNS_HEADER_QID which sets
+ only the first two bytes of id. I think that the id variable should be
+ declared as "unsigned short" in this function.
+
+ Even after declaring these variables as "unsigned short", the valgrind
+ errors are still there. Which brings us to the third problem.
+
+ 3. The third problem is that Valgrind assumes that query->qid is not
+ initialised correctly. And it does that because query->qid is set from
+ DNS_HEADER_QID(qbuf); Valgrind says that qbuf has unitialised bytes. And
+ qbuf has uninitialised bytes because of channel->next_id . And next_id is
+ set by ares_init.c:ares__generate_new_id() . I found that putting short r=0
+ in this function (instead of short r) makes all Valgrind warnings go away.
+ I have studied ares__rc4() too, and this is the offending line:
+
+ buffer_ptr[counter] ^= state[xorIndex]; (ares_query.c:62)
+
+ This is what triggers Valgrind.. buffer_ptr is unitialised in this function,
+ and by applying ^= on it, it remains unitialised.
+
+Version 1.4.0 (June 8, 2007)
+
+* June 4 2007 (Daniel Stenberg)
+
+- James Bursa reported a major memory problem when resolving multi-IP names
+ and I found and fixed the problem. It was added by Ashish Sharma's patch
+ two days ago.
+
+ When I then tried to verify multiple entries in /etc/hosts after my fix, I
+ got another segfault and decided this code was not ripe for inclusion and I
+ reverted the patch.
+
+* June 2 2007
+
+- Brad Spencer found and fixed three flaws in the code, found with the new
+ gcc 4.2.0 warning: -Waddress
+
+- Brad House fixed VS2005 compiler warnings due to time_t being 64bit.
+ He also made recent Microsoft compilers use _strdup() instead of strdup().
+
+- Brad House's man pages for ares_save_options() and ares_destroy_options()
+ were added.
+
+- Ashish Sharma provided a patch for supporting multiple entries in the
+ /etc/hosts file. Patch edited for coding style and functionality by me
+ (Daniel).
+
+* May 30 2007
+
+- Shmulik Regev brought cryptographically secure transaction IDs:
+
+ The c-ares library implementation uses a DNS "Transaction ID" field that is
+ seeded with a pseudo random number (based on gettimeofday) which is
+ incremented (++) between consecutive calls and is therefore rather
+ predictable. In general, predictability of DNS Transaction ID is a well
+ known security problem (e.g.
+ http://bak.spc.org/dms/archive/dns_id_attack.txt) and makes a c-ares based
+ implementation vulnerable to DNS poisoning. Credit goes to Amit Klein
+ (Trusteer) for identifying this problem.
+
+ The patch I wrote changes the implementation to use a more secure way of
+ generating unique IDs. It starts by obtaining a key with reasonable entropy
+ which is used with an RC4 stream to generate the cryptographically secure
+ transaction IDs.
+
+ Note that the key generation code (in ares_init:randomize_key) has two
+ versions, the Windows specific one uses a cryptographically safe function
+ provided (but undocumented :) by the operating system (described at
+ http://blogs.msdn.com/michael_howard/archive/2005/01/14/353379.aspx). The
+ default implementation is a bit naive and uses the standard 'rand'
+ function. Surely a better way to generate random keys exists for other
+ platforms.
+
+ The patch can be tested by using the adig utility and using the '-s' option.
+
+- Brad House added ares_save_options() and ares_destroy_options() that can be
+ used to keep options for later re-usal when ares_init_options() is used.
+
+ Problem: Calling ares_init() for each lookup can be unnecessarily resource
+ intensive. On windows, it must LoadLibrary() or search the registry
+ on each call to ares_init(). On unix, it must read and parse
+ multiple files to obtain the necessary configuration information. In
+ a single-threaded environment, it would make sense to only
+ ares_init() once, but in a heavily multi-threaded environment, it is
+ undesirable to ares_init() and ares_destroy() for each thread created
+ and track that.
+
+ Solution: Create ares_save_options() and ares_destroy_options() functions to
+ retrieve and free options obtained from an initialized channel. The
+ options populated can be used to pass back into ares_init_options(),
+ it should populate all needed fields and not retrieve any information
+ from the system. Probably wise to destroy the cache every minute or
+ so to prevent the data from becoming stale.
+
+- Daniel S added ares_process_fd() to allow applications to ask for processing
+ on specific sockets and thus avoiding select() and associated
+ functions/macros. This function will be used by upcoming libcurl releases
+ for this very reason. It also made me export the ares_socket_t type in the
+ public ares.h header file, since ares_process_fd() uses that type for two of
+ the arguments.
+
+* May 25 2007
+
+- Ravi Pratap fixed a flaw in the init_by_resolv_conf() function for windows
+ that could cause it to return a bad return code.
+
+* April 16 2007
+
+- Yang Tse: Provide ares_getopt() command-line parser function as a source
+ code helper function, not belonging to the actual c-ares library.
+
+* February 19 2007
+
+- Vlad Dinulescu added ares_parse_ns_reply().
+
+* February 13 2007
+
+- Yang Tse: Fix failure to get the search sequence of /etc/hosts and
+ DNS from /etc/nsswitch.conf, /etc/host.conf or /etc/svc.conf when
+ /etc/resolv.conf did not exist or was unable to read it.
+
+* November 22 2006
+
+- Install ares_dns.h too
+
+- Michael Wallner fixed this problem: When I set domains in the options
+ struct, and there are domain/search entries in /etc/resolv.conf, the domains
+ of the options struct will be overridden.
+
+* November 6 2006
+
+- Yang Tse removed a couple of potential zero size memory allocations.
+
+- Andreas Rieke fixed the line endings in the areslib.dsp file that I (Daniel)
+ broke in the 1.3.2 release. We should switch to a system where that file is
+ auto-generated. We could rip some code for that from curl...
+
+Version 1.3.2 (November 3, 2006)
+
+* October 12 2006
+
+- Prevent ares_getsock() to overflow if more than 16 sockets are used.
+
+* September 11 2006
+
+- Guilherme Balena Versiani: I noted a strange BUG in Win32 port
+ (ares_init.c/get_iphlpapi_dns_info() function): when I disable the network
+ by hand or disconnect the network cable in Windows 2000 or Windows XP, my
+ application gets 127.0.0.1 as the only name server. The problem comes from
+ 'GetNetworkParams' function, that returns the empty string "" as the only
+ name server in that case. Moreover, the Windows implementation of
+ inet_addr() returns INADDR_LOOPBACK instead of INADDR_NONE.
+
+* August 29 2006
+
+- Brad Spencer did
+
+ o made ares_version.h use extern "C" for c++ compilers
+ o fixed compiler warnings in ares_getnameinfo.c
+ o fixed a buffer position init for TCP reads
+
+* August 3 2006
+
+- Ravi Pratap fixed ares_getsock() to actually return the proper bitmap and
+ not always zero!
+
+Version 1.3.1 (June 24, 2006)
+
+* July 23, 2006
+
+- Gisle Vanem added getopt() to the ahost program. Currently accepts
+ only [-t {a|aaaa}] to specify address family in ares_gethostbyname().
+
+* June 19, 2006
+
+- (wahern) Removed "big endian" DNS section and RR data integer parser
+ macros from ares_dns.h, which break c-ares on my Sparc64. Bit-wise
+ operations in C operate on logical values. And in any event the octets are
+ already in big-endian (aka network) byte order so they're being reversed
+ (thus the source of the breakage).
+
+* June 18, 2006
+
+- William Ahern handles EAGAIN/EWOULDBLOCK errors in most of the I/O calls
+ from area_process.c.
+
+ TODO: Handle one last EAGAIN for a UDP socket send(2) in
+ ares__send_query().
+
+* May 10, 2006
+
+- Bram Matthys brought my attention to a libtool peculiarity where detecting
+ things such as C++ compiler actually is a bad thing and since we don't need
+ that detection I added a work-around, much inspired by a previous patch by
+ Paolo Bonzini. This also shortens the configure script quite a lot.
+
+* May 3, 2006
+
+- Nick Mathewson added the ARES_OPT_SOCK_STATE_CB option that when set makes
+ c-ares call a callback on socket state changes. A better way than the
+ ares_getsock() to get full control over the socket state.
+
+* January 9, 2006
+
+- Alexander Lazic improved the getservbyport_r() configure check.
+
+* January 6, 2006
+
+- Alexander Lazic pointed out that the buildconf should use the ACLOCAL_FLAGS
+ variable for easier controlling what it does and how it runs.
+
+* January 5, 2006
+
+- James Bursa fixed c-ares to find the hosts file on RISC OS, and made it
+ build with newer gcc versions that no longer defines "riscos".
+
+* December 22
+
+- Daniel Stenberg added ares_getsock() that extracts the set of sockets to
+ wait for action on. Similar to ares_fds() but not restricted to using
+ select() for the waiting.
+
+* November 25
+
+- Yang Tse fixed some send() / recv() compiler warnings
+
+* September 18
+
+- Added constants that will be used by ares_getaddrinfo
+
+- Made ares_getnameinfo use the reentrant getservbyport (getservbyport_r) if it
+ is available to ensure it works properly in a threaded environment.
+
+* September 10
+
+- configure fix for detecting a member in the sockaddr_in6 struct which failed
+ on ipv6-enabled HP-UX 11.00
+
+Version 1.3.0 (August 29, 2005)
+
+* August 21
+
+- Alfredo Tupone provided a fix for the Windows code in get_iphlpapi_dns_info()
+ when getting the DNS server etc.
+
+* June 19
+
+- Added some checks for the addrinfo structure.
+
+* June 2
+
+- William Ahern:
+
+ Make UDP sockets non-blocking. I've confirmed that at least on Linux 2.4 a
+ read event can come back from poll() on a valid SOCK_DGRAM socket but
+ recv(2) will still block. This patch doesn't ignore EAGAIN in
+ read_udp_packets(), though maybe it should. (This patch was edited by Daniel
+ Stenberg and a new configure test was added (imported from curl's configure)
+ to properly detect what non-blocking socket approach to use.)
+
+ I'm not quite sure how this was happening, but I've been seeing PTR queries
+ which seem to return empty responses. At least, they were empty when calling
+ ares_expand_name() on the record. Here's a patch which guarantees to
+ NUL-terminate the expanded name. The old behavior failed to NUL-terminate if
+ len was 0, and this was causing strlen() to run past the end of the buffer
+ after calling ares_expand_name() and getting ARES_SUCCESS as the return
+ value. If q is not greater than *s then it's equal and *s is always
+ allocated with at least one byte.
+
+* May 16
+
+- Added ares_getnameinfo which mimics the getnameinfo API (another feature
+ that could use testing).
+
+* May 14
+
+- Added an inet_ntop function from BIND for systems that do not have it.
+
+* April 9
+
+- Made sortlist support IPv6 (this can probably use some testing).
+
+- Made sortlist support CIDR matching for IPv4.
+
+* April 8
+
+- Added preliminary IPv6 support to ares_gethostbyname. Currently, sortlist
+ does not work with IPv6. Also provided an implementation of bitncmp from
+ BIND for systems that do not supply this function. This will be used to add
+ IPv6 support to sortlist.
+
+- Made ares_gethostbyaddr support IPv6 by specifying AF_INET6 as the family.
+ The function can lookup IPv6 addresses both from files (/etc/hosts) and
+ DNS lookups.
+
+* April 7
+
+- Tupone Alfredo fixed includes of arpa/nameser_compat.h to build fine on Mac
+ OS X.
+
+* April 5
+
+- Dominick Meglio: Provided implementations of inet_net_pton and inet_pton
+ from BIND for systems that do not include these functions.
+
+* March 11, 2005
+
+- Dominick Meglio added ares_parse_aaaa_reply.c and did various
+ adjustments. The first little steps towards IPv6 support!
+
+* November 7
+
+- Fixed the VC project and makefile to use ares_cancel and ares_version
+
+* October 24
+
+- The released ares_version.h from 1.2.1 says 1.2.0 due to a maketgz flaw.
+ This is now fixed.
+
+Version 1.2.1 (October 20, 2004)
+
+* September 29
+
+- Henrik Stoerner fix: got a report that Tru64 Unix (the unix from Digital
+ when they made Alpha's) uses /etc/svc.conf for the purpose fixed below for
+ other OSes. He made c-ares check for and understand it if present.
+
+- Now c-ares will use local host name lookup _before_ DNS resolving by default
+ if nothing else is told.
+
+* September 26
+
+- Henrik Stoerner: found out that c-ares does not look at the /etc/host.conf
+ file to determine the sequence in which to search /etc/hosts and DNS. So on
+ systems where this order is defined by /etc/host.conf instead of a "lookup"
+ entry in /etc/resolv.conf, c-ares will always default to looking in DNS
+ first, and /etc/hosts second.
+
+ c-ares now looks at
+
+ 1) resolv.conf (for the "lookup" line);
+ 2) nsswitch.fon (for the "hosts:" line);
+ 3) host.conf (for the "order" line).
+
+ First match wins.
+
+- Dominick Meglio patched: C-ares on Windows assumed that the HOSTS file is
+ located in a static location. It assumed
+ C:\Windows\System32\Drivers\Etc. This is a poor assumption to make. In fact,
+ the location of the HOSTS file can be changed via a registry setting.
+
+ There is a key called DatabasePath which specifies the path to the HOSTS
+ file:
+ http://www.microsoft.com/technet/itsolutions/network/deploy/depovg/tcpip2k.mspx
+
+ The patch will make c-ares correctly consult the registry for the location
+ of this file.
+
+* August 29
+
+- Gisle Vanem fixed the MSVC build files.
+
+* August 20
+
+- Gisle Vanem made c-ares build and work with his Watt-32 TCP/IP stack.
+
+* August 13
+
+- Harshal Pradhan made a minor syntax change in ares_init.c to make it build
+ fine with MSVC 7.1
+
+* July 24
+
+- Made the lib get built static only if --enable-debug is used.
+
+- Gisle Vanem fixed:
+
+ Basically in loops like handle_errors(), 'query->next' was assigned a local
+ variable and then query was referenced after the memory was freed by
+ next_server(). I've changed that so next_server() and end_query() returns
+ the next query. So callers should use this ret-value.
+
+ The next problem was that 'server->tcp_buffer_pos' had a random value at
+ entry to 1st recv() (luckily causing Winsock to return ENOBUFS).
+
+ I've also added a ares_writev() for Windows to streamline the code a bit
+ more.
+
+* July 20
+- Fixed a few variable return types for some system calls. Made configure
+ check for ssize_t to make it possible to use that when receiving the send()
+ error code. This is necessary to prevent compiler warnings on some systems.
+
+- Made configure create config.h, and all source files now include setup.h that
+ might include the proper config.h (or a handicrafted alternative).
+
+- Switched to 'ares_socket_t' type for sockets in ares, since Windows don't
+ use 'int' for that.
+
+- automake-ified and libool-ified c-ares. Now it builds libcares as a shared
+ lib on most platforms if wanted. (This bloated the size of the release
+ archive with another 200K!)
+
+- Makefile.am now uses Makefile.inc for the c sources, h headers and man
+ pages, to make it easier for other makefiles to use the exact same set of
+ files.
+
+- Adjusted 'maketgz' to use the new automake magic when building distribution
+ archives.
+
+- Anyone desires HTML and/or PDF versions of the man pages in the release
+ archives?
+
+* July 3
+- Günter Knauf made c-ares build and run on Novell Netware.
+
+* July 1
+- Gisle Vanem provided Makefile.dj to build with djgpp, added a few more djgpp
+ fixes and made ares not use 'errno' to provide further info on Windows.
+
+* June 30
+- Gisle Vanem made it build with djgpp and run fine with the Watt-32 stack.
+
+* June 10
+- Gisle Vanem's init patch for Windows:
+
+ The init_by_resolv_conf() function fetches the DNS-server(s)
+ from a series of registry branches.
+
+ This can be wrong in the case where DHCP has assigned nameservers, but the
+ user has overridden these servers with other prefered settings. Then it's
+ wrong to use the DHCPNAMESERVER setting in registry.
+
+ In the case of no global DHCP-assigned or fixed servers, but DNS server(s)
+ per adapter, one has to query the adapter branches. But how can c-ares know
+ which adapter is valid for use? AFAICS it can't. There could be one adapter
+ that is down (e.g. a VPN adapter).
+
+ So it's better to leave this to the IP Helper API (iphlapi) available in
+ Win-98/2000 and later. My patch falls-back to the old way if not available.
+
+* June 8
+- James Bursa fixed an init issue for RISC OS.
+
+* May 11
+- Nico Stappenbelt reported that when processing domain and search lines in
+ the resolv.conf file, the first entry encountered is processed and used as
+ the search list. According to the manual pages for both Linux, Solaris and
+ Tru64, the last entry of either a domain or a search field is used.
+
+ This is now adjusted in the code
+
+Version 1.2.0 (April 13, 2004)
+
+* April 2, 2004
+- Updated various man pages to look nicer when converted to HTML on the web
+ site.
+
+* April 1, 2004
+- Dirk Manske provided a new function that is now named ares_cancel(). It is
+ used to cancel/cleanup a resolve/request made using ares functions on the
+ given ares channel. It does not destroy/kill the ares channel itself.
+
+- Dominick Meglio cleaned up the formatting in several man pages.
+
+* March 30, 2004
+- Dominick Meglio's new ares_expand_string. A helper function when decoding
+ incoming DNS packages.
+
+- Daniel Stenberg modified the Makefile.in to use a for loop for the man page
+ installation to improve overview and make it easier to add man pages.
+
+Version 1.1.0 (March 11, 2004)
+
+* March 9, 2004
+- Gisle Vanem improved build on Windows.
+
+* February 25, 2004
+- Dan Fandrich found a flaw in the Feb 22 fix.
+
+- Added better configure --enable-debug logic (taken from the curl configure
+ script). Added acinclude.m4 to the tarball.
+
+* February 23, 2004
+- Removed ares_free_errmem(), the function, the file and the man page. It was
+ not used and it did nothing.
+
+- Fixed a lot of code that wasn't "64bit clean" and thus caused a lot of
+ compiler warnings on picky compilers.
+
+* February 22, 2004
+- Dominick Meglio made ares init support multiple name servers in the
+ NameServer key on Windows.
+
+* February 16, 2004
+- Modified ares_private.h to include libcurl's memory debug header if
+ CURLDEBUG is set. This makes all the ares-functions supervised properly by
+ the curl test suite. This also forced me to add inclusion of the
+ ares_private.h header in a few more files that are using some kind of
+ memory-related resources.
+
+- Made the makefile only build ahost and adig if 'make demos' is used.
+
+* February 10, 2004
+- Dirk Manske made ares_version.h installed with 'make install'
+
+* February 4, 2004
+- ares_free_errmem() is subject for removal, it is simply present for future
+ purposes, and since we removed the extra parameter in strerror() it won't
+ be used by c-ares!
+- configure --enable-debug now enables picky compiler options if gcc is used
+- fixed several compiler warnings --enable-debug showed and Joerg Mueller-Tolk
+ reported
+
+Version 1.0.0 (February 3, 2004)
+
+* February 3, 2004
+- now we produce the libcares.a library instead of the previous libares.a
+ since we are no longer compatible
+
+* February 2, 2004
+
+- ares_strerror() has one argument less. This is the first official
+ modification of the existing provided ares API.
+
+* January 29, 2004
+
+- Dirk Manske fixed how the socket is set non-blocking.
+
+* January 4, 2004
+
+- Dominick Meglio made the private gettimeofday() become ares_gettimeofday()
+ instead in order to not pollute the name space and risk colliding with
+ other libraries' versions of this function.
+
+* October 24, 2003. Daniel Stenberg
+
+ Added ares_version().
+
+Version 1.0-pre1 (8 October 2003)
+
+- James Bursa made it run on RISC OS
+
+- Dominick Meglio made it run fine on NT4
+
+- Duncan Wilcox made it work fine on Mac OS X
+
+- Daniel Stenberg adjusted the windows port
+
+- liren at vivisimo.com made the initial windows port
+
+* Imported the sources from ares 1.1.1
git://repos.xcallymotion.com / motion2.git / blobdiff