Alien-cares

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libcares/CHANGES.0  view on Meta::CPAN

 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

libcares/CHANGES.0  view on Meta::CPAN

  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

libcares/CHANGES.0  view on Meta::CPAN

  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

libcares/CHANGES.0  view on Meta::CPAN

* 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).