c-ares version 1.34.3 - November 9 2024

This is a bugfix release.

Changes:

  • Build the release package in an automated way so we can provide provenance as per SLSA3. PR #906

Bugfixes:

  • Some upstream servers are non-compliant with EDNS options, resend queries without EDNS. Issue #911
  • Android: <=7 needs sys/system_properties.h a70637c
  • Android: CMake needs -D_GNU_SOURCE and others. PR #915
  • TSAN warns on missing lock, but lock isn’t actually necessary. PR #915
  • ares_getaddrinfo() for AF_UNSPEC should retry IPv4 if only IPv6 is received. 765d558
  • ares_send() shouldn’t return ARES_EBADRESP, its ARES_EBADQUERY. 91519e7
  • Fix typos in man pages. PR #905

c-ares version 1.34.2 - October 15 2024

This release contains a fix for downstream packages detecting the c-ares version based on the contents of the header file rather than the distributed pkgconf or cmake files.

c-ares version 1.34.1 - October 9 2024

This release fixes a packaging issue.

c-ares version 1.34.0 - October 9 2024

This is a feature and bugfix release.

Features:

  • adig: read arguments from adigrc. PR #856
  • Add new pending write callback optimization via ares_set_pending_write_cb. PR #857
  • New function ares_process_fds(). PR #875
  • Failed servers should be probed rather than redirecting queries which could cause unexpected latency. PR #877
  • adig: rework command line arguments to mimic dig from bind. PR #890
  • Add new method for overriding network functions ares_set_socket_function_ex() to properly support all new functionality. PR #894
  • Fix regression with custom socket callbacks due to DNS cookie support. PR #895
  • ares_socket: set IP_BIND_ADDRESS_NO_PORT on ares_set_local_ip* tcp sockets PR #887
  • URI parser/writer for ares_set_servers_csv()/ares_get_servers_csv(). PR #882

Changes:

  • Connection handling modularization. PR #857, PR #876
  • Expose library/utility functions to tools. PR #860
  • Remove ares__ prefix, just use ares_ for internal functions. PR #872

Bugfixes:

  • fix: potential WIN32_LEAN_AND_MEAN redefinition. PR #869
  • Fix googletest v1.15 compatibility. PR #874
  • Fix pkgconfig thread dependencies. PR #884

c-ares version 1.33.1 - August 23 2024

This is a bugfix release.

Bugfixes:

  • Work around systemd-resolved quirk that returns unexpected codes for single label names. Also adds test cases to validate the work around works and will continue to work in future releases. PR #863, See Also systemd/systemd#34101
  • Fix sysconfig ndots default value, also adds containerized test case to prevent future regressions. PR #862
  • Fix blank DNS name returning error code rather than valid record for commands like: adig -t SOA .. Also adds test case to prevent future regressions. 9e574af
  • Fix calculation of query times > 1s. 2b2eae7
  • Fix building on old Linux releases that don’t have TCP_FASTOPEN_CONNECT. b7a89b9
  • Fix minor Android build warnings. PR #848

c-ares version 1.33.0 - August 2 2024

This is a feature and bugfix release.

Features:

  • Add DNS cookie support (RFC7873 + RFC9018) to help prevent off-path cache poisoning attacks. PR #833
  • Implement TCP FastOpen (TFO) RFC7413, which will make TCP reconnects 0-RTT on supported systems. PR #840

Changes:

  • Reorganize source tree. PR #822
  • Refactoring of connection handling to prevent code duplication. PR #839
  • New dynamic array data structure to prevent simple logic flaws in array handling in various code paths. PR #841

Bugfixes:

  • ares_destroy() race condition during shutdown due to missing lock. PR #831
  • Android: Preserve thread name after attaching it to JVM. PR #838
  • Windows UWP (Store) support fix. PR #845

c-ares version 1.32.3 - July 24 2024

This is a bugfix release.

Changes:

  • Prevent complex recursion during query requeuing and connection cleanup for stability. e8b32b8
  • Better propagate error codes on requeue situations. a9bc0a2
  • Try to prevent SIGPIPE from being generated and delivered to integrations. de01baa

Bugfixes:

  • Missing manpage for ares_dns_record_set_id() aa462b3
  • Memory leak in ares__hosts_entry_to_hostent() due to allocation strategy. PR #824
  • UDP write failure detected via ICMP unreachable should trigger faster failover. PR #821
  • Fix pycares test case regression due to wrong error code being returned. Regression from 1.31.0. PR #820
  • Fix possible Windows crash during ares_destroy() when using event threads. 5609bd4
  • ARES_OPT_MAXTIMEOUTMS wasn’t being honored in all cases. a649c60

c-ares version 1.32.2 - July 15 2024

This is a bugfix release.

Bugfixes:

  • Windows: rework EventThread AFD code for better stability. PR #811
  • Windows: If an IP address was detected to have changed, it could lead to a crash due to a bad pointer. Regression introduced in 1.31.0. 59e3a1f4
  • Windows: use QueryPerformanceCounters() instead of GetTickCount64() for better time accuracy (~15ms -> ~1us). 8a50fc6c
  • Windows 32bit config change callback needs to be tagged as stdcall otherwise could result in a crash. 5c2bab35
  • Tests that need accurate timing should not depend on internal symbols as there are C++ equivalents in std::chrono. PR #809
  • Kqueue (MacOS, *BSD): If the open socket count exceeded 8 (unlikely), it would try to allocate a new buffer that was too small. 5aad7981

c-ares version 1.32.1 - July 7 2024

This is a bugfix release.

Bugfixes:

  • Channel lock needs to be recursive to ensure calls into c-ares functions can be made from callbacks otherwise deadlocks will occur. This regression was introduced in 1.32.0.

c-ares version 1.32.0 - July 4 2024

This is a feature and bugfix release.

Features:

  • Add support for DNS 0x20 to help prevent cache poisoning attacks, enabled by specifying ARES_FLAG_DNS0x20. Disabled by default. PR #800
  • Rework query timeout logic to automatically adjust timeouts based on network conditions. The timeout specified now is only used as a hint until there is enough history to calculate a more valid timeout. PR #794

Changes:

  • DNS RR TXT strings should not be automatically concatenated as there are use cases outside of RFC 7208. In order to maintain ABI compliance, the ability to retrieve TXT strings concatenated is retained as well as a new API to retrieve the individual strings. This restores behavior from c-ares 1.20.0. PR #801
  • Clean up header inclusion logic to make hacking on code easier. PR #797
  • GCC/Clang: Enable even more strict warnings to catch more coding flaws. 253bdee
  • MSVC: Enable /W4 warning level. PR #792

Bugfixes:

  • Tests: Fix thread race condition in test cases for EventThread. PR #803
  • Windows: Fix building with UNICODE. PR #802
  • Thread Saftey: ares_timeout() was missing lock. 74a64e4
  • Fix building with DJGPP (32bit protected mode DOS). PR #789

c-ares version 1.31.0 - June 18 2024

This is a maintenance and bugfix release.

Changes:

  • Enable Query Cache by default. PR #786

Bugfixes:

  • Enhance Windows DNS configuration change detection to also detect manual DNS configuration changes. PR #785
  • Various legacy MacOS Build fixes. Issue #782
  • Ndots value of zero in resolv.conf was not being honored. 852a60a
  • Watt-32 build support had been broken for some time. PR #781
  • Distribute ares_dns_rec_type_tostr manpage. PR #778

c-ares version 1.30.0 - June 7 2024

This is a maintenance and bugfix release.

Features:

  • Basic support for SIG RR record (RFC 2931 / RFC 2535) PR #773

Changes:

  • Validation that DNS strings can only consist of printable ascii characters otherwise will trigger a parse failure. 75de16c and 40fb125
  • Windows: use GetTickCount64() for a monotonic timer that does not wrap. 1dff8f6

Bugfixes:

  • QueryCache: Fix issue where purging on server changes wasn’t working. a6c8fe6
  • Windows: Fix Y2K38 issue by creating our own ares_timeval_t datatype. PR #772
  • Fix packaging issue affecting MacOS due to a missing header. 55afad6
  • MacOS: Fix UBSAN warnings that are likely meaningless due to alignment issues in new MacOS config reader.
  • Android: arm 32bit build failure due to missing symbol. d1722e6

c-ares version 1.29.0 - May 24 2024

This is a feature and bugfix release.

Features:

  • When using ARES_OPT_EVENT_THREAD, automatically reload system configuration when network conditions change. PR #759
  • Apple: reimplement DNS configuration reading to more accurately pull DNS settings. PR #750
  • Add observability into DNS server health via a server state callback, invoked whenever a query finishes. PR #744
  • Add server failover retry behavior, where failed servers are retried with small probability after a minimum delay. PR #731

Changes:

  • Mark ares_channel_t * as const in more places in the public API. PR #758

Bugfixes:

  • Due to a logic flaw dns name compression writing was not properly implemented which would result in the name prefix not being written for a partial match. This could cause issues in various record types such as MX records when using the deprecated API. Regression introduced in 1.28.0. Issue #757
  • Revert OpenBSD SOCK_DNS flag, it doesn’t do what the docs say it does and causes c-ares to become non-functional. PR #754
  • ares_getnameinfo(): loosen validation on salen parameter. Issue #752
  • cmake: Android requires C99. PR #748
  • ares_queue_wait_empty() does not honor timeout_ms >= 0. Issue #742

c-ares version 1.28.1 - Mar 30 2024

This release contains a fix for a single significant regression introduced in c-ares 1.28.0.

  • ares_search() and ares_getaddrinfo() resolution fails if no search domains are specified. Issue #737

c-ares version 1.28.0 - Mar 29 2024

This is a feature and bugfix release.

Features:

  • Emit warnings when deprecated c-ares functions are used. This can be disabled by passing a compiler definition of CARES_NO_DEPRECATED. PR #732
  • Add function ares_search_dnsrec() to search for records using the new DNS record data structures. PR #719
  • Rework internals to pass around ares_dns_record_t instead of binary data, this introduces new public functions of ares_query_dnsrec() and ares_send_dnsrec(). PR #730

Changes:

  • tests: when performing simulated queries, reduce timeouts to make tests run faster
  • Replace configuration file parsers with memory-safe parser. PR #725
  • Remove acountry completely, the manpage might still get installed otherwise. Issue #718

Bugfixes:

  • CMake: don’t overwrite global required libraries/definitions/includes which could cause build errors for projects chain building c-ares. Issue #729
  • On some platforms, netinet6/in6.h is not included by netinet/in.h and needs to be included separately. PR #728
  • Fix a potential memory leak in ares_init(). Issue #724
  • Some platforms don’t have the isascii() function. Implement as a macro. PR #721
  • CMake: Fix Chain building if CMAKE runtime paths not set
  • NDots configuration should allow a value of zero. PR #735

c-ares version 1.27.0 - Feb 23 2024

This is a security, feature, and bugfix release.

Security:

  • Moderate. CVE-2024-25629. Reading malformatted /etc/resolv.conf, /etc/nsswitch.conf or the HOSTALIASES file could result in a crash. GHSA-mg26-v6qh-x48q

Features:

  • New function ares_queue_active_queries() to retrieve number of in-flight queries. PR #712
  • New function ares_queue_wait_empty() to wait for the number of in-flight queries to reach zero. PR #710
  • New ARES_FLAG_NO_DEFLT_SVR for ares_init_options() to return a failure if no DNS servers can be found rather than attempting to use 127.0.0.1. This also introduces a new ares status code of ARES_ENOSERVER. PR #713

Changes:

  • EDNS Packet size should be 1232 as per DNS Flag Day. PR #705

Bugfixes:

  • Windows DNS suffix search list memory leak. PR #711
  • Fix warning due to ignoring return code of write(). PR #709
  • CMake: don’t override target output locations if not top-level. Issue #708
  • Fix building c-ares without thread support. PR #700

c-ares version 1.26.0 - Jan 26 2024

This is a feature and bugfix release.

Features:

  • Event Thread support. Integrators are no longer required to monitor the file descriptors registered by c-ares for events and call ares_process() when enabling the event thread feature via ARES_OPT_EVENT_THREAD passed to ares_init_options(). PR #696
  • Added flags to are_dns_parse() to force RAW packet parsing. PR #693

Changes:

  • Mark ares_fds() as deprecated. PR #691

Bugfixes:

  • adig: Differentiate between internal and server errors. e10b16a
  • Autotools allow make to override CFLAGS/CPPFLAGS/CXXFLAGS. PR #695
  • Autotools: fix building for 32bit windows due to stdcall symbol mangling. PR #689
  • RR Name should not be sanity checked against the Question. PR #685

c-ares version 1.25.0 - Jan 3 2024

Changes:

  • AutoTools: rewrite build system to be lighter weight and fix issues in some semi-modern systems. It is likely this has broken building on some less common and legacy OSs, please report issues. PR #674
  • Rewrite ares_strsplit() as a wrapper for ares__buf_split() for memory safety reasons. 88c444d
  • The ahost utility now uses ares_getaddrinfo() and returns both IPv4 and IPv6 addresses by default. PR #669
  • OpenBSD: Add SOCK_DNS flag when creating socket. PR #659

Bugfixes:

  • Tests: Live reverse lookups for Google’s public DNS servers no longer return results, replace with CloudFlare pubic DNS servers. 1231aa7
  • MacOS legacy SDKs require sys/socket.h before net/if.h PR #673
  • Connection failures should increment the server failure count first or a retry might be enqueued to the same server. 05181a6
  • On systems that don’t implement the ability to enumerate network interfaces the stubs used the wrong prototype. eebfe0c
  • Fix minor warnings and documentation typos. PR #666
  • Fix support for older GoogleTest versions. d186f11
  • getrandom() may require sys/random.h on some systems. Issue #665
  • Fix building tests with symbol hiding enabled. Issue #664

c-ares version 1.24.0 - Dec 17 2023

Features:

Changes:

Bugfixes:

c-ares version 1.23.0 - Nov 30 2023

Features:

Bugfixes:

c-ares version 1.22.1 - Nov 19 2023

Bugfixes:

c-ares version 1.22.0 - Nov 14 2023

Features:

Changes:

Bugfixes:

c-ares version 1.21.0 - Oct 27 2023

Changes:

Bugfixes:

c-ares version 1.20.1 - Oct 8 2023

Bugfixes:

c-ares version 1.20.0 - Oct 7 2023

Changes:

Bug fixes:

c-ares version 1.19.1 - May 22 2023

Security:

  • CVE-2023-32067. High. 0-byte UDP payload causes Denial of Service
  • CVE-2023-31147 Moderate. Insufficient randomness in generation of DNS query IDs
  • CVE-2023-31130. Moderate. Buffer Underwrite in ares_inet_net_pton()
  • CVE-2023-31124. Low. AutoTools does not set CARES_RANDOM_FILE during cross compilation

Bug fixes:

c-ares version 1.19.0 - Jan 28 2023

Security:

Changes:

Bug fixes:

c-ares version 1.18.1 - Oct 27 2021

Bug fixes:

  • ares_getaddrinfo() would return ai_addrlen of 16 for ipv6 adddresses rather than the sizeof(struct sockaddr_in6)

c-ares version 1.18.0 - Oct 25 2021

Changes:

Bug fixes:

c-ares version 1.17.2 - Aug 10 2021

Security:

Changes:

Bug fixes:

c-ares version 1.17.1 - Nov 19 2020

Fixes packaging issues in 1.17.0.

c-ares version 1.17.0 - Nov 16 2020

Security:

Changes:

Bug fixes:

c-ares version 1.16.1 - May 11 2020

Security:

  • Prevent possible use-after-free and double-free in ares_getaddrinfo() if ares_destroy() is called prior to ares_getaddrinfo() completing. Reported by Jann Horn at Google Project Zero.

Changes:

  • Allow TXT records on CHAOS qclass. Used for retriving things like version.bind, version.server, authoris.bind, hostname.bind, and id.server. [3]

Bug fixes:

  • Fix Windows Unicode incompatibilities with ares_getaddrinfo() [1]
  • Silence false cast-align compiler warnings due to valid casts of struct sockaddr to struct sockaddr_in and struct sockaddr_in6.
  • MacOS should use libresolv for retrieving DNS servers, like iOS
  • CMake build system should populate the INCLUDE_DIRECTORIES property of installed targets [2]
  • Correct macros in use for the ares_getaddrinfo.3 man page

c-ares version 1.16.0 - March 13 2020

Changes:

  • Introduction of ares_getaddrinfo() API which provides similar output (including proper sorting as per RFC 6724) to the system native API, but utilizes different data structures in order to provide additional information such as TTLs and all aliases. Please reference the respective man pages for usage details.
  • Parse SOA records from ns_t_any response
  • CMake: Provide c-ares version in package export file
  • CMake: Add CPACK functionality for DEB and RPM
  • CMake: Generate PDB files during build
  • CMake: Support manpage installation

Bug fixes:

  • Fix bad expectation in IPv6 localhost test.
  • AutoTools: use XC_CHECK_BUILD_FLAGS instead of XC_CHECK_USER_FLAGS to prevent complaints about CPPFLAGS in CFLAGS.
  • Fix .onion handling
  • Command line usage was out of date for adig and ahost.
  • Typos in manpages
  • If ares_getenv is defined, it must return a value on all platforms
  • If /etc/resolv.conf has invalid lookup values, use the defaults.
  • Tests: Separate live tests from SetServers* tests as only live tests should require internet access.
  • ares_gethostbyname() should return ENODATA if no valid A or AAAA record is found, but a CNAME was found.
  • CMake: Rework library function checking to prevent unintended linking with system libraries that aren’t needed.
  • Due to use of inet_addr() it was not possible to return 255.255.255.255 from ares_gethostbyname().
  • CMake: Fix building of tests on Windows

c-ares version 1.15.0 - October 23 2018

Changes:

Bug fixes:

c-ares version 1.14.0 - February 16 2018

Changes:

Bug fixes:

c-ares version 1.13.0 - June 20 2017

Changes:

  • cmake build system support added
  • Add virtual function set for socket IO: ares_set_socket_functions

Bug fixes:

  • CVE-2017-1000381: c-ares NAPTR parser out of bounds access
  • macos: do not set HAVE_CLOCK_GETTIME_MONOTONIC
  • test: check ares_create_query with too-long name
  • dist: add ares_library_initialized.* to the tarball
  • fix build on OpenBSD
  • dist: ship msvc_ver.inc too
  • test: Add gTest/gMock files to SOURCES
  • test: add fuzz entrypoint for ares_create_query()
  • configure: clock_gettime workaround
  • docs: convert INSTALL to MarkDown & tweak
  • ares_process: fix return type of socket_create function (win32 warning)
  • docs: fixed references to ares_set_local_ip4 and ares_set_local_ip6
  • Windows DNS server sorting
  • Use ares_socklen_t instead of socket_t
  • ares_create_query: use ares_free not naked free
  • msvc_ver.inc support most recent Visual Studio 2017
  • acountry: Convert char from ISO-8859-1 to UTF-8
  • ares_expand_name: limit number of indirections
  • configure: do not check for ar if specified manually
  • Added support for Windows DNS Suffix Search List
  • ares.h: support compiling with QNX

c-ares version 1.12.0 - Sep 29 2016

Changes:

  • api: add ARES_OPT_NOROTATE optmask value

Bug fixes:

  • CVE-2016-5180: ares_create_query single byte out of buffer write
  • configure: acknowledge –disable-tests [1]
  • man pages: fix typos detected by Lintian
  • test: add missing #includes for dns-proto.cc
  • test: avoid in6addr_* constants
  • test: Build with MinGW on AppVeyor
  • Makefile.m32: add support for extra flags
  • Makefile.m32: add support for CROSSPREFIX
  • configure: check if tests can get built before enabled
  • ares_library_cleanup: reset ares_realloc too
  • ahost.c: add cast to fix C++ compile
  • test: Only pass unused args to GoogleTest
  • build: commonize MSVC version detection
  • msvc_ver.inc: support Visual Studio 2015 Update 1, 2, 3
  • test: for AF_UNSPEC, return CNAME only for AAAA, but valid A record
  • ares_getnameinfo: explicitly clear struct servent before use
  • test: Update fuzzing function prototype
  • init: fix nsort initialization
  • test: add fuzzing check script to tests
  • web: http => https
  • read_tcp_data: remove superfluous NULL check
  • LICENSE.md: add a stand-alone license file
  • SECURITY.md: suggested “security process” for the project
  • ares_init_options: only propagate init failures from options [2]
  • headers: remove checks for and defines of variable sizes
  • test: fix gMock to work with gcc >= 6.x [3]

c-ares version 1.11.0 - Feb 19 2016

Changes:

  • Add a unit test suite
  • Allow builds with code converage with –enable-code-coverage configure option
  • Allow library-wide override of malloc/free
  • Allow multiple -s options to the ahost command
  • api: Expose the ares_library_initialized() function
  • api: Add ares_set_sortlist(3) entrypoint
  • api: Add entrypoints to allow use of per-server ports
  • api: introduce `ares_parse_txt_reply_ext`
  • api: Add ares_set_socket_configure_callback()

Bug fixes:

  • timeadd: make static
  • timeoffset: made static and private
  • nowarn: use limits.h instead of configure for size of long
  • single_domain: Invalid memory access for empty string input
  • ares_build.h: fix building on 64-bit powerpc
  • Allow specification of search domain in ahost
  • Don’t override explicitly specified search domains
  • ares_parse_soa_reply: Do not leak rr_name on allocation failure
  • Update ahost man page to describe -s option
  • host_callback: Fall back to AF_INET on searching with AF_UNSPEC
  • Add -t u option to ahost
  • CONTRIBUTING: added
  • ares_set_servers_csv: fix NULL dereference
  • Fix integer shift overflow if both tcp_socket and udp_socket are set
  • fix acountry memory leak
  • lookup_service: prevent tmpbuf from overrunning
  • ares_getnameinfo.3: there is no ares_getaddrinfo
  • init_by_defaults: Continue loop if space for hostname not large enough
  • Destroy options if ares_save_options fails
  • ares__read_line: free buf on realloc failure
  • added define for visual studio 2013
  • windows: fix slow DNS lookup issue
  • Use libresolv to initialize cares on iPhone targets
  • buildconf: remove check for libtool, it only requires libtoolize
  • init_by_resolv_conf: Don’t exit loop early leaving uninitialized entries
  • ahost: check the select() return code
  • configure_socket: explicitly ignore return code
  • read_tcp_data: don’t try to use NULL pointer after malloc failure
  • Distribute all man pages
  • ares_expand_name: check for valid bits in label length
  • ares__read_line: clear buf pointer on realloc failure
  • process_answer: fix things up correctly when removing EDNS option
  • ares_parse_txt_reply: propagate errors from per-substring loop
  • ares_gethostbyname: don’t leak valid-but-empty hostent
  • ares_init_options: don’t lose init failure
  • ares_dup: clear new channel on failure
  • config_sortlist: free any existing sortlist on (re)alloc failure
  • ares_striendstr: fix so non-NULL return can happen
  • bitncmp: update comment to match code behaviour
  • ares_set_servers_csv.3: make return type match code
  • init_by_resolv_conf: ignore fopen errors to use default values
  • Use “resolve” as synonym of “dns” in nsswitch.conf
  • ares_win32_init: make LoadLibrary work when using UNICODE too
  • dist: Distribute README.md
  • configure: build silently by default
  • ares_dup.3: remove mention of nonexistent function

c-ares version 1.10.0 - May 12 2013

Changes:

  • Added ares_create_query(), to be used instead of ares_mkquery()
  • ares_inet_ntop() and ares_inet_pton() are now recognized c-ares functions

Bug fixes:

  • include the ares_parse_soa_reply.* files in the tarball
  • read_udp_packets: bail out loop on bad sockets
  • get_DNS_AdaptersAddresses: fix IPv6 parsing
  • adig: perror() doesn’t work for socket errors on windows
  • ares_parse_aaaa_reply: fix memory leak
  • setup_once.h: HP-UX sys/socket.h issue workaround
  • configure: several fixes
  • config-dos.h: define strerror() to strerror_s_() for High-C
  • config-dos.h: define HAVE_CLOSE_S for MSDOS/Watt-32
  • ares_build.h.dist: enhance non-configure GCC ABI detection logic
  • ares.h: stricter CARES_EXTERN linkage decorations logic
  • ares_cancel(): cancel requests safely
  • protocol parsing: check input data stricter
  • library init: be recursive, reference count inits/cleanups
  • ares_parse_txt_reply: return a ares_txt_reply node for each sub-string
  • ares_set_servers_csv: fixed IPv6 address parsing
  • build: fix build on msvc11

c-ares version 1.9.1 - Jun 18 2012

Fixed:

  • include the ares_parse_soa_reply.* files in the tarball

c-ares version 1.9.0 - Jun 17 2012

Changed:

  • Added ares_parse_soa_reply

Fixed:

  • libcares.pc generation for static MingW* cross builds
  • ares_dup: UDP and TCP port byte order in saved options

c-ares version 1.8.0 - Apr 27 2012

Changed:

  • Added ares_parse_naptr_reply()

Fixed:

  • handle CNAME-only in ares_parse_aaaa_reply()
  • support multiple DNS servers on Android
  • check for __ANDROID__ in addition to ANDROID macro
  • port numbers: convert them to network order
  • get_iphlpapi_dns_info: fix buffer overrun
  • configure: make CURL_CHECK_DEF ignore leading whitespace
  • segfault triggered in ares_init_options()
  • ares_getnameinfo’s memcpy did not copy enough bytes
  • ares_destroy: fix segfault in ares_destroy_options()
  • CHANGES: generate from script
  • configure: fix symbol hiding usability check

c-ares version 1.7.5 - Aug 16 2011

Fixed:

  • detection of semicolon comments in resolv.conf
  • avoid using system’s inet_net_pton affected by the WLB-2008080064 advisory
  • replacement ares_inet_net_pton affected by the WLB-2008080064 advisory
  • replacement ares_inet_ntop affected by potential out of bounds write
  • added install target to Makefile.msvc
  • only fall back to AF_INET searches when looking for AF_UNSPEC addresses
  • fixed ares_parse_*_reply memory leaks
  • Use correct sizeof in ares_getnameinfo()
  • IPv6-on-windows: find DNS servers correctly
  • man pages: docs for the c-ares utility programs
  • getservbyport replacement for Win CE
  • config_sortlist: (win32) missing else
  • advance_tcp_send_queue: avoid NULL ptr dereference
  • configure: fix a bashism
  • ares_expand_name: Fix encoded length for indirect root

c-ares version 1.7.4 - Dec 9 2010

Changed:

  • local-bind: Support binding to local interface/IPs, see ares_set_local_ip4, ares_set_local_ip6, ares_set_local_dev

Fixed:

  • memory leak in ares_getnameinfo
  • add missing break that caused get_ares_servers to fail
  • ares_parse_a_reply: fix CNAME response parsing
  • init_by_options: don’t copy an empty sortlist
  • Replaced uint32_t with unsigned int to fix broken builds on a couple of platforms
  • Fix lookup with HOSTALIASES set
  • adig: fix NAPTR parsing
  • compiler warning cleanups

c-ares version 1.7.3 - Jun 11 2010

Fixed:

  • builds on Android
  • now includes all files necessary to build it (1.7.2 lacked a file)

c-ares version 1.7.2 - Jun 10 2010

Changed:

  • Added ares_parse_mx_reply()

Fixed:

  • ares_init: Last, not first instance of domain or search should win
  • improve alternative definition of bool
  • fix VS2010 compiler warnings

c-ares version 1.7.1 - Mar 23 2010

Changed:

  • added IPv6 name servers support

Fixed:

  • closing of sockets on Windows systems
  • MSVC deprecated compiler options warnings
  • ares_process_fd() didn’t check broken connections

c-ares version 1.7.0 - Nov 30 2009

Changed:

  • in6_addr is not used in ares.h anymore, but a private ares_in6_addr is instead declared and used
  • ares_gethostbyname() now supports ‘AF_UNSPEC’ as a family for resolving either AF_INET6 or AF_INET
  • a build-time configured ares_socklen_t is now used instead of socklen_t
  • new ares_library_init() and ares_library_cleanup() functions
  • new –enable-curldebug configure option
  • ARES_ECANCELLED is now sent as reason for ares_cancel()
  • added ares_parse_srv_reply()
  • added ares_parse_txt_reply()
  • added ares_free_data()
  • new –enable-symbol-hiding configure option
  • new Makefile.msvc for any MSVC compiler or MS Visual Studio version
  • addrttl and addr6ttl structs renamed to ares_addrttl and ares_addr6ttl
  • naming convention for libraries built with MSVC, see README.msvc

Fixed:

  • ares_parse_*_reply() functions now return ARES_EBADRESP instead of ARES_EBADNAME if the name in the response failed to decode
  • only expose/export symbols starting with ‘ares_’
  • fix \Device\TCP handle leaks triggered by buggy iphlpapi.dll
  • init without internet gone no longer fails
  • out of bounds memory overwrite triggered with malformed /etc/hosts file
  • function prototypes in man pages out of sync with ares.h

c-ares version 1.6.0 - Dec 9 2008

Changed:

  • Added support for the glibc “rotate” resolv.conf option (or ARES_OPT_ROTATE)
  • Added ares_gethostbyname_file()
  • Added ares_dup()
  • Added ares_set_socket_callback()

Fixed:

  • improved configure detection of several functions
  • improved source code portability
  • adig supports a regular numerical dotted IP address for the -s option
  • handling of EINPROGRESS for UDP connects
  • ares_parse_ptr_reply() would cause a buffer to shrink instead of expand if a reply contained 8 or more records
  • buildconf works on OS X

c-ares version 1.5.3 - Aug 29 2008

  • fix adig sample application compilation failure on some systems
  • fix pkg-config reporting of private libraries needed for static linking
  • fallback to gettimeofday when monotonic clock is unavailable at run-time
  • ares_gethostbyname() fallback from AAA to A records with CNAME present
  • allow –enable-largefile and –disable-largefile configurations
  • configure process no longer needs nor checks size of curl_off_t
  • library will now be built with _REENTRANT symbol defined if needed
  • Improved configure detection of number of arguments for getservbyport_r
  • Improved query-ID randomness
  • Validate that DNS response address matches the request address
  • fix acountry sample application compilation failure on some systems

c-ares version 1.5.2 - May 29 2008

  • code refactoring in ares_gethostbyaddr
  • improved checking of /dev/urandom in configure script
  • new sample application, acountry
  • improved MSVC6 dsp files
  • adig sample application supports NAPTR records
  • improved file seeding randomizer
  • improved parsing of resolver configuration files
  • updated configure script to remove autoconf 2.62 warnings
  • use monotonic time source if available
  • return all PTR-records when doing reverse lookups
  • millisecond resolution support for the timeout option

c-ares version 1.5.1 - Nov 21 2007

  • added the ares_llist.h header that was missing in the 1.5.0 release

c-ares version 1.5.0 - Nov 21 2007

  • SONAME bump to a few API and ABI breaking changes: - ares_host_callback() - ares_nameinfo_callback() - ares_parse_a_reply() - ares_parse_aaaa_reply()
  • two valgrind reports were silenced
  • ares_save_options() fix
  • do DNS retries even on TCP connections
  • correctly clear sockets from the fd_set in several functions
  • always wait on TCP events to detect connect closures
  • new socket options: ARES_OPT_SOCK_SNDBUF and ARES_OPT_SOCK_RCVBUF
  • made the query callbacks receive the number of timeouts that happened during the execution of a query
  • don’t skip a server if it’s the only one
  • segfault when generating a DNS “Transaction ID” under low memory conditions
  • ares_strerror() segfault fix
  • added copyright texts to a few places that were missing them

c-ares version 1.4.0 - Jun 8 2007

  • fixed VS2005 compiler warnings due to time_t being 64bit
  • introduced cryptographically secure transaction IDs
  • added ares_save_options()
  • added ares_destroy_options()
  • added ares_process_fd()
  • fixed undefined return value in init_by_resolv_conf() function for windows
  • added ares_parse_ns_reply()
  • 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
  • when domains were sert in the options struct, and there were domain/search entries in /etc/resolv.conf, the domains of the options struct would be overridden
  • removed a couple of potential zero size memory allocations
  • fixed the line endings in areslib.dsp