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278 Commits

Author SHA1 Message Date
Kamil Dudka
64ac64e783 eliminate a race condition in Curl_resolv_timeout() 2010-04-04 23:34:24 +02:00
Daniel Stenberg
c245a8f92e avoid compiler warning without USE_ALARM_TIMEOUT 2010-03-24 17:00:20 +01:00
Daniel Stenberg
2309b4e330 remove the CVSish $Id$ lines 2010-03-24 11:02:54 +01:00
Thomas Lopatic
6657f12fff fix the alarm()-based DNS timeout 
Looking at the code of Curl_resolv_timeout() in hostip.c, I think
that in case of a timeout, the signal handler for SIGALRM never
gets removed. I think that in my case it gets executed at some
point later on when execution has long left Curl_resolv_timeout()
or even the cURL library.

The code that is jumped to with siglongjmp() simply sets the
error message to "name lookup timed out" and then returns with
CURLRESOLV_ERROR. I guess that instead of simply returning
without cleaning up, the code should have a goto that jumps to
the spot right after the call to Curl_resolv().
 2010-03-22 21:57:48 +01:00
Yang Tse
597ad5a2ce adjust preprocessor symbol definition check relative to resolver specialty 2010-01-23 13:53:33 +00:00
Daniel Stenberg
33ce0ec1f1 wrap long lines and do some indent policing 2010-01-22 23:21:39 +00:00
Yang Tse
bfc4c33985 Constantine Sapuntzakis refactoring of async callbacks, allowing 
removal of Curl_addrinfo_copy(), Curl_addrinfo6_callback(), and
Curl_addrinfo4_callback()
 2010-01-22 06:36:52 +00:00
Yang Tse
3184a91ec8 VMS specific preprocessor symbol checking adjustments 2009-12-30 17:59:56 +00:00
Yang Tse
59939313f8 Make usage of calloc()'s arguments consistent with rest of code base 2009-11-18 10:33:54 +00:00
Yang Tse
05a4abea04 Constantine Sapuntzakis patch for hostip.c 
No need for a separate variable ndns.

The memory leak detection will detect code that fails to release a dns reference.

The DEBUGASSERT will detect code that releases too many references.
 2009-11-12 19:28:43 +00:00
Yang Tse
668dc0ad87 Make hostip.c compile again 2009-11-12 04:32:08 +00:00
Daniel Stenberg
fb5f332834 - Constantine Sapuntzakis posted bug #2891595 
(http://curl.haxx.se/bug/view.cgi?id=2891595) which identified how an entry
  in the DNS cache would linger too long if the request that added it was in
  use that long. He also provided the patch that now makes libcurl capable of
  still doing a request while the DNS hash entry may get timed out.
 2009-11-11 09:31:37 +00:00
Daniel Stenberg
7e07da977c - Peter Sylvester made a debug featuer for Curl_resolv() that now will force 
libcurl to resolve 'localhost' whatever name you use in the URL *if* you set
  the --interface option to (exactly) "LocalHost". This will enable us to
  write tests for custom hosts names but still use a local host server.
 2009-09-01 14:27:01 +00:00
Yang Tse
33a3753c3f libcurl's memory.h renamed to curl_memory.h 2009-04-21 11:46:16 +00:00
Yang Tse
9770899a4b 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.
 2009-04-21 10:26:58 +00:00
Yang Tse
a0ef686c54 Merged existing IPv4 and IPv6 Curl_ip2addr functions into a single one 
which now also takes a protocol address family argument.
 2008-11-06 17:19:56 +00:00
Yang Tse
0ce97f77e0 Use our Curl_addrinfo definition even when an addrinfo struct is available. 
Use a wrapper function to call system's getaddrinfo().
 2008-10-30 13:45:25 +00:00
Yang Tse
6983ba3225 *** empty log message *** 2008-10-20 23:05:52 +00:00
Yang Tse
b843c27322 fix compiler warning 2008-10-19 22:46:54 +00:00
Yang Tse
5779283a52 attempt to fix or allow further detection of an elusive icc SIGSEGV 2008-10-19 20:17:16 +00:00
Yang Tse
29ba1730ca attempt to fix compiler warning relative to potential misaligned data access 2008-10-19 01:02:18 +00:00
Dan Fandrich
feff911fb7 Removed a line of dead code (discovered by Coverity) 2008-10-18 01:17:27 +00:00
Yang Tse
8254bbae56 protect against 'use after free' or race condition 2008-10-17 15:29:35 +00:00
Yang Tse
4acbe8f20c fix compiler warning 2008-10-17 12:53:53 +00:00
Yang Tse
2ea70a5c73 OOM condition fix 2008-10-17 12:49:02 +00:00
Yang Tse
d6114165d3 attempt to fix or allow further detection of an elusive icc SIGSEGV 2008-10-13 06:23:42 +00:00
Yang Tse
c455254fd1 attempt to fix or allow further detection of an elusive icc SIGSEGV 2008-10-10 17:25:53 +00:00
Yang Tse
aec761916e fix another error introduced in previously mentioned commit 2008-10-03 02:25:52 +00:00
Yang Tse
7d750d2b92 fix error introduced in previous commit 2008-10-03 00:35:22 +00:00
Yang Tse
bdf1724412 take 2 at fixing compiler warning: argument might be clobbered by longjmp' or vfork' 2008-10-02 22:58:09 +00:00
Yang Tse
26a651f7ae fix compiler warning: variable' might be clobbered by longjmp' or `vfork' 2008-10-02 13:28:10 +00:00
Dan Fandrich
88513d2d1a Fixed some compiler warnings with gcc 2008-10-01 17:34:24 +00:00
Dan Fandrich
4114129ac0 Fixed a couple of compile warnings. 2008-09-29 23:45:43 +00:00
Dan Fandrich
4adcf7e9ed Moved all signal-based name resolution timeout handling into a single new 
Curl_resolv_timeout function to reduce coupling.
 2008-09-29 21:02:22 +00:00
Yang Tse
4e909ee8b1 ntoa() and inet_ntoa_r() no longer used 2008-09-24 12:22:16 +00:00
Yang Tse
a622fd90b4 remove unnecessary typecasting of calloc() 2008-09-06 04:47:14 +00:00
Dan Fandrich
0994d7811f Removed some redundant type casts 2008-09-02 18:36:39 +00:00
Daniel Stenberg
0cd8840dba - Andreas Schuldei improved Phil Blundell's patch for IPv6 using c-ares, and I 
edited it slightly. Now you should be able to use IPv6 addresses fine even
  with libcurl built to use c-ares.
 2008-07-09 18:39:49 +00:00
Daniel Stenberg
b9d66dca51 - Dmitry Popov filed bug report #1911069 
(http://curl.haxx.se/bug/view.cgi?id=1911069) that identified a race
  condition in the name resolver code when the DNS cache is shared between
  multiple easy handles, each running in simultaneous threads that could cause
  crashes.
 2008-03-11 22:55:23 +00:00
Daniel Stenberg
991505e077 Woops, partly revert my previous commit and do it slightly differently instead. 
The signalling of that a global DNS cache is wanted is done by setting the
option but the setting of the internal variable that it is in use must not be
done until it finally actually gets used!

NOTE and WARNING: I noticed that you can't actually switch off the global dns
cache with CURLOPT_DNS_USE_GLOBAL_CACHE but you couldn't do that previously
either and the option is very clearly and loudly documented as DO NOTE USE so
I won't bother to fix this bug now.
 2008-01-15 22:44:12 +00:00
Daniel Stenberg
56f17d2c9f I made the torture test on test 530 go through. This was actually due to 
silly code left from when we switched to let the multi handle "hold" the dns
cache when using the multi interface... Of course this only triggered when a
certain function call returned error at the correct moment.
 2008-01-15 22:15:55 +00:00
Daniel Stenberg
cbd1a77ec2 if () => if() 
while () => while()
and some other minor re-indentings
 2007-11-07 09:21:35 +00:00
Dan Fandrich
8388366849 Renamed a variable to avoid shadowing a global declarations. 2007-09-28 18:47:59 +00:00
Dan Fandrich
523767660c Fixed some minor mismatched types found by splint. 2007-08-26 05:53:26 +00:00
Daniel Stenberg
54967d2a3a Thomas J. Moore provided a patch that introduces Kerberos5 support in 
libcurl. This also makes the options change name to --krb (from --krb4) and
CURLOPT_KRBLEVEL (from CURLOPT_KRB4LEVEL) but the old names are still
 2007-07-01 22:01:18 +00:00
Daniel Stenberg
62f0f5571d Robert Iakobashvili re-arranged the internal hash code to work with a custom 
hash function for different hashes, and also expanded the default size for
the socket hash table used in multi handles to greatly enhance speed when
very many connections are added and the socket API is used.
 2007-06-26 21:09:28 +00:00
Yang Tse
94b253fde7 Steve Little's fixes to allow compilation on VMS 64-bit mode 2007-04-25 03:00:10 +00:00
Gisle Vanem
c514a2a89a Removed inclusion of <sys/types.h> and <sys/stat.h> in .c-files 
since they're already included through "setup.h".
 2007-02-26 04:24:26 +00:00
Yang Tse
3a634a273a curlassert macro replaced with DEBUGASSERT macro defined in setup_once.h 2007-02-21 19:03:20 +00:00
Dan Fandrich
77516822f6 Workaround for Cray UNICOS 9.0 to fix ftp. 2006-08-21 22:28:19 +00:00
Dan Fandrich
839441e236 Minor portability fixes to get things running on UNICOS 9.0 on a Cray Y-MP 2006-08-16 18:48:27 +00:00
Yang Tse
ecfaa4f869 Fix warning: no newline at end of file 2006-07-25 18:48:12 +00:00
Yang Tse
13616f8f96 Simplify check for NEED_MALLOC_H, and make more explicit that NEED_MALLOC_H shall be defined if <malloc.h> header file must be included even when including <stdlib.h>. 2006-07-25 13:49:49 +00:00
Gisle Vanem
e4d6ade4b3 Moved functions common to IPv4 and C-ares to hostip.c; 
Curl_freeaddrinfo() and Curl_ip2addr().
 2006-07-25 10:31:31 +00:00
Gisle Vanem
c82e880f5b Remove comment about c-ares not supporting IPv6. 2006-07-25 10:23:15 +00:00
Gisle Vanem
5cdbd0cf4a Constify arguments to Curl_he2ai() and Curl_addrinfo_copy(). 2006-07-21 06:21:46 +00:00
Gisle Vanem
a55c70d4ae Constify 'hostname' and 'service' to various resolver functions. 2006-07-21 05:51:12 +00:00
Yang Tse
fe22872d14 include <malloc.h> only if HAVE_MALLOC_H and NEED_MALLOC_H are both defined. 2006-07-11 21:34:23 +00:00
Daniel Stenberg
ca319f63ad Ingmar Runge provided a source snippet that caused a crash. The reason for 
the crash was that libcurl internally was a bit confused about who owned the
DNS cache at all times so if you created an easy handle that uses a shared
DNS cache and added that to a multi handle it would crash. Now we keep more
careful internal track of exactly what kind of DNS cache each easy handle
uses: None, Private (allocated for and used only by this single handle),
Shared (points to a cache held by a shared object), Global (points to the
global cache) or Multi (points to the cache within the multi handle that is
automatically shared between all easy handles that are added with private
caches).
 2006-07-07 22:58:06 +00:00
Daniel Stenberg
e85e30546c Roland Blom filed bug report #1481217 
(http://curl.haxx.se/bug/view.cgi?id=1481217), with follow-ups by Michele Bini
and David Byron. libcurl previously wrongly used GetLastError() on windows to
get error details after socket-related function calls, when it really should
use WSAGetLastError() instead.

When changing to this, the former function Curl_ourerrno() is now instead
called Curl_sockerrno() as it is necessary to only use it to get errno from
socket-related functions as otherwise it won't work as intended on Windows.
 2006-05-04 22:39:47 +00:00
Gisle Vanem
3cbb1b2b64 Use the HAVE_MALLOC_H and HAVE_PROCESS_H defines 
(more logical).
 2006-04-26 17:23:28 +00:00
Daniel Stenberg
92009181af Shmulik Regev provided a fix for the DNS cache when using short life times, 
as previously it could be holding on to old cached entries longer than
requested.
 2006-02-16 23:42:32 +00:00
Daniel Stenberg
5f0366c2cb only define _REENTRANT if not already defined, and only in setup.h 2005-04-19 23:19:23 +00:00
Daniel Stenberg
6a2e21ec8c FTP code turned into state machine. Not completely yet, but a good start. 
The tag 'before_ftp_statemachine' was set just before this commit in case
of future need.
 2005-02-09 13:06:40 +00:00
Daniel Stenberg
043d70fcdf Use plain structs and not typedef'ed ones in the hash and linked-list code. 2005-01-25 00:06:29 +00:00
Daniel Stenberg
dcea109bb5 Dan Fandrich fix: eliminates some pedantic CodeWarrior compiler warnings and 
errors.
 2004-11-18 14:04:40 +00:00
Daniel Stenberg
6d1b37b3da Prevent a longjmp warning by moving the rc assign within Curl_resolv(). 
Andy Cedilnik reported. Warning on HP-UX?
 2004-10-10 03:32:01 +00:00
Daniel Stenberg
39af394a1c removed tabs and trailing whitespace from source 2004-10-06 07:50:18 +00:00
Daniel Stenberg
95def48071 Made the dns entry remain locked while a connection to the host remains to 
allow verbose output during this period. Bertrand Demiddelaer reported and
helped fixing.
 2004-10-04 10:36:51 +00:00
Daniel Stenberg
f2a99d7d74 the _num_chars() function is not used, removing 2004-06-24 15:05:39 +00:00
Daniel Stenberg
feb2dd2835 Replaced all uses of sprintf() with the safer snprintf(). It is just a 
precaution to prevent mistakes to lead to buffer overflows.
 2004-06-24 11:54:11 +00:00
Daniel Stenberg
5e34f3dc01 made the Curl_he2ai() take the port number as an int intead, to avoid lots 
of typecasts all over
 2004-06-24 10:43:50 +00:00
Daniel Stenberg
560c257bd0 prevent warning 2004-06-24 08:08:28 +00:00
Daniel Stenberg
c39858aac0 Source cleanups. The major one being that we now _always_ use a Curl_addrinfo 
linked list for name resolved data, even on hosts/systems with only IPv4
stacks as this simplifies a lot of code.
 2004-06-24 07:43:48 +00:00
Daniel Stenberg
8d76d4016d removed trailing whitespace 2004-06-10 11:56:02 +00:00
Daniel Stenberg
9f92657f76 Gisle corrected two comments 2004-06-10 11:55:37 +00:00
Daniel Stenberg
9f341f9ce5 Gisle Vanem's improved verbose output and timeout handling when connecting to 
a host name that resolves to multiple IP addresses.
 2004-06-10 11:06:21 +00:00
Daniel Stenberg
e9056f5f95 if shrinking the buffer fails, use the older larger one 2004-05-17 22:07:43 +00:00
Daniel Stenberg
bbafb2eb27 curl_global_init_mem() allows the memory functions to be replaced. 
memory.h is included everywhere for this.
 2004-05-11 11:30:23 +00:00
Daniel Stenberg
4250637e7d improved the cleaning up of memory when we fail to resolve names due to 
out of memory (thanks to 'runtests.pl -t')
 2004-05-04 13:40:30 +00:00
Daniel Stenberg
245e3122df Made defines instead of plain numbers for the Curl_resolv() return code to 
make the code easier to read
 2004-04-26 14:18:00 +00:00
Daniel Stenberg
648e82f05d Major hostip.c cleanup and split into multiple files and easier #ifdef 
usage.
 2004-04-26 07:20:11 +00:00
Daniel Stenberg
3755bffcc2 Gisle Vanem found and fixed a memory leak when doing (failing) Windows 
threaded name resolves.
 2004-04-23 14:04:30 +00:00
Daniel Stenberg
62b7c08bb3 include unistd.h as well for the close() proto on some platforms (like Tru64) 2004-04-21 11:18:42 +00:00
Daniel Stenberg
dc25cd6f3a cleanup leftovers 2004-04-20 09:46:10 +00:00
Daniel Stenberg
68e8a0f0d9 asking for CURL_IPRESOLVE_V6 when ipv6 addresses can't be resolved will 
now cause the resolve function to return NULL immediately
 2004-04-14 12:10:44 +00:00
Daniel Stenberg
1d0b5b507a Curl_wait_for_resolv() could hang due to the bad timeout timer resolution and 
some bad thinking on my part.
 2004-04-14 11:43:26 +00:00
Daniel Stenberg
31a693b99a Gisle Vanem's fix that makes the multi interface work on Windows again even 
when not using ares.
 2004-04-13 13:59:12 +00:00
Daniel Stenberg
eb6345de60 somewhat safer typecasting in case sizeof(long) != sizeof(void *) (is there 
even such platforms?)
 2004-04-12 06:55:25 +00:00
Daniel Stenberg
5ca47f19d7 the pack_hostent() proto isn't used/needed with ipv6 is enabled. 
time to restructure this source file!
 2004-04-06 15:09:43 +00:00
Daniel Stenberg
9044fcbb5f Gisle Vanem's fix for bug item #927979 reported by Nathan O'Sullivan. 
Good enough?
 2004-04-06 14:51:14 +00:00
Daniel Stenberg
ad9e83a90f Dirk Manske's fix that makes sure we cancel the ares resolve when we time out 
from a name resolve. Without this, we leak memory!
 2004-04-01 08:40:36 +00:00
Daniel Stenberg
675db3a211 removed my previously attempted fix for ares timeouts, not needed 2004-04-01 07:04:58 +00:00
Daniel Stenberg
ee1595dcd5 Roy Shan fixed a case that prevented ares name resolve timeouts to occur. 2004-03-31 20:50:01 +00:00
Daniel Stenberg
9d0330d5bd Remove the elapsed time from the most recent select() only. 2004-03-31 13:19:41 +00:00
Daniel Stenberg
d5074f74bb The asynch name resolve methods now all use CURL_TIMEOUT_RESOLVE for 
the specific time to wait for a resolve. The definition is at the top of
this source file.
 2004-03-31 12:55:24 +00:00
Daniel Stenberg
ea0cf7c87b Dirk Manske found out the Curl_wait_for_resolv() timed out too early. 2004-03-31 12:45:26 +00:00
Daniel Stenberg
b8b8473b6d Lots of comments added an clarified. Added timeout for the ares version 
of Curl_is_resolved() to address Roy Shan's reported problem.
 2004-03-30 13:02:07 +00:00
Daniel Stenberg
dc46f535ae The select() timeout is better not static since some implementation actually 
might change it. I don't *think* it does it when the timeout is 0,0 but it
is better to be sure...
 2004-03-29 21:29:24 +00:00
Daniel Stenberg
5b55f9ecb3 Günter Knauf's NetWare changes. 2004-03-17 12:46:42 +00:00