2008-10-30 09:45:25 -04:00
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/***************************************************************************
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* _ _ ____ _
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* Project ___| | | | _ \| |
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* / __| | | | |_) | |
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* | (__| |_| | _ <| |___
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* \___|\___/|_| \_\_____|
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*
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2012-12-14 11:38:18 -05:00
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* Copyright (C) 1998 - 2012, Daniel Stenberg, <daniel@haxx.se>, et al.
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2008-10-30 09:45:25 -04:00
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*
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* This software is licensed as described in the file COPYING, which
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* you should have received as part of this distribution. The terms
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* are also available at http://curl.haxx.se/docs/copyright.html.
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*
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* You may opt to use, copy, modify, merge, publish, distribute and/or sell
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* copies of the Software, and permit persons to whom the Software is
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* furnished to do so, under the terms of the COPYING file.
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*
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* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
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* KIND, either express or implied.
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*
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***************************************************************************/
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#include "setup.h"
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#include <curl/curl.h>
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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#ifdef HAVE_NETDB_H
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# include <netdb.h>
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#endif
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#ifdef HAVE_ARPA_INET_H
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# include <arpa/inet.h>
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#endif
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2009-12-30 12:59:56 -05:00
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#ifdef __VMS
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2008-10-30 09:45:25 -04:00
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# include <in.h>
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# include <inet.h>
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#endif
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#if defined(NETWARE) && defined(__NOVELL_LIBC__)
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# undef in_addr_t
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# define in_addr_t unsigned long
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#endif
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#include "curl_addrinfo.h"
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2010-11-05 17:31:40 -04:00
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#include "inet_pton.h"
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2011-05-26 09:44:53 -04:00
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#include "warnless.h"
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2008-10-30 09:45:25 -04:00
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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2009-04-21 07:46:16 -04:00
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#include "curl_memory.h"
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2008-10-30 09:45:25 -04:00
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/* The last #include file should be: */
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#include "memdebug.h"
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/*
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* Curl_freeaddrinfo()
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*
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* This is used to free a linked list of Curl_addrinfo structs along
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* with all its associated allocated storage. This function should be
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* called once for each successful call to Curl_getaddrinfo_ex() or to
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* any function call which actually allocates a Curl_addrinfo struct.
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*/
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2009-04-23 07:09:20 -04:00
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#if defined(__INTEL_COMPILER) && (__INTEL_COMPILER == 910) && \
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2009-04-25 06:24:11 -04:00
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defined(__OPTIMIZE__) && defined(__unix__) && defined(__i386__)
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2009-04-23 07:09:20 -04:00
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/* workaround icc 9.1 optimizer issue */
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2009-04-24 06:38:12 -04:00
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# define vqualifier volatile
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2009-04-23 07:09:20 -04:00
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#else
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2009-04-24 06:38:12 -04:00
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# define vqualifier
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2009-04-23 07:09:20 -04:00
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#endif
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2008-10-30 09:45:25 -04:00
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2009-04-24 06:38:12 -04:00
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void
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Curl_freeaddrinfo(Curl_addrinfo *cahead)
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{
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Curl_addrinfo *vqualifier canext;
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Curl_addrinfo *ca;
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2008-10-30 09:45:25 -04:00
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for(ca = cahead; ca != NULL; ca = canext) {
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if(ca->ai_addr)
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free(ca->ai_addr);
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if(ca->ai_canonname)
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free(ca->ai_canonname);
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canext = ca->ai_next;
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free(ca);
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}
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}
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#ifdef HAVE_GETADDRINFO
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/*
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* Curl_getaddrinfo_ex()
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*
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2008-11-01 10:51:37 -04:00
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* This is a wrapper function around system's getaddrinfo(), with
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2008-10-30 09:45:25 -04:00
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* the only difference that instead of returning a linked list of
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* addrinfo structs this one returns a linked list of Curl_addrinfo
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* ones. The memory allocated by this function *MUST* be free'd with
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* Curl_freeaddrinfo(). For each successful call to this function
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* there must be an associated call later to Curl_freeaddrinfo().
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*
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* There should be no single call to system's getaddrinfo() in the
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* whole library, any such call should be 'routed' through this one.
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*/
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int
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Curl_getaddrinfo_ex(const char *nodename,
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const char *servname,
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const struct addrinfo *hints,
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Curl_addrinfo **result)
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{
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const struct addrinfo *ai;
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struct addrinfo *aihead;
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Curl_addrinfo *cafirst = NULL;
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Curl_addrinfo *calast = NULL;
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Curl_addrinfo *ca;
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2010-11-23 15:38:20 -05:00
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size_t ss_size;
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2008-10-30 09:45:25 -04:00
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int error;
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*result = NULL; /* assume failure */
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error = getaddrinfo(nodename, servname, hints, &aihead);
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if(error)
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return error;
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2010-11-23 15:38:20 -05:00
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/* traverse the addrinfo list */
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for(ai = aihead; ai != NULL; ai = ai->ai_next) {
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/* ignore elements with unsupported address family, */
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/* settle family-specific sockaddr structure size. */
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if(ai->ai_family == AF_INET)
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ss_size = sizeof(struct sockaddr_in);
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#ifdef ENABLE_IPV6
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else if(ai->ai_family == AF_INET6)
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ss_size = sizeof(struct sockaddr_in6);
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#endif
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else
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continue;
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/* ignore elements without required address info */
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if((ai->ai_addr == NULL) || !(ai->ai_addrlen > 0))
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continue;
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/* ignore elements with bogus address size */
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if((size_t)ai->ai_addrlen < ss_size)
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continue;
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2008-10-30 09:45:25 -04:00
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if((ca = malloc(sizeof(Curl_addrinfo))) == NULL) {
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error = EAI_MEMORY;
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break;
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}
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/* copy each structure member individually, member ordering, */
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2010-11-23 15:38:20 -05:00
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/* size, or padding might be different for each platform. */
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2008-10-30 09:45:25 -04:00
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ca->ai_flags = ai->ai_flags;
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ca->ai_family = ai->ai_family;
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ca->ai_socktype = ai->ai_socktype;
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ca->ai_protocol = ai->ai_protocol;
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2010-11-23 15:38:20 -05:00
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ca->ai_addrlen = (curl_socklen_t)ss_size;
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2008-10-30 09:45:25 -04:00
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ca->ai_addr = NULL;
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ca->ai_canonname = NULL;
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ca->ai_next = NULL;
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2010-11-23 15:38:20 -05:00
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if((ca->ai_addr = malloc(ss_size)) == NULL) {
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error = EAI_MEMORY;
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free(ca);
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break;
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2008-10-30 09:45:25 -04:00
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}
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2010-11-23 15:38:20 -05:00
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memcpy(ca->ai_addr, ai->ai_addr, ss_size);
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2008-10-30 09:45:25 -04:00
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if(ai->ai_canonname != NULL) {
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if((ca->ai_canonname = strdup(ai->ai_canonname)) == NULL) {
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error = EAI_MEMORY;
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2010-11-23 15:38:20 -05:00
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free(ca->ai_addr);
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2008-10-30 09:45:25 -04:00
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free(ca);
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break;
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}
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}
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/* if the return list is empty, this becomes the first element */
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if(!cafirst)
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cafirst = ca;
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/* add this element last in the return list */
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if(calast)
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calast->ai_next = ca;
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calast = ca;
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}
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/* destroy the addrinfo list */
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if(aihead)
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freeaddrinfo(aihead);
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/* if we failed, also destroy the Curl_addrinfo list */
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if(error) {
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Curl_freeaddrinfo(cafirst);
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cafirst = NULL;
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}
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2010-11-23 22:36:57 -05:00
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else if(!cafirst) {
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#ifdef EAI_NONAME
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/* rfc3493 conformant */
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error = EAI_NONAME;
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#else
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/* rfc3493 obsoleted */
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error = EAI_NODATA;
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#endif
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#ifdef USE_WINSOCK
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SET_SOCKERRNO(error);
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#endif
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}
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2008-10-30 09:45:25 -04:00
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*result = cafirst;
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2008-11-06 12:19:56 -05:00
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/* This is not a CURLcode */
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return error;
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2008-10-30 09:45:25 -04:00
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}
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#endif /* HAVE_GETADDRINFO */
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/*
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* Curl_he2ai()
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*
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* This function returns a pointer to the first element of a newly allocated
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* Curl_addrinfo struct linked list filled with the data of a given hostent.
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* Curl_addrinfo is meant to work like the addrinfo struct does for a IPv6
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* stack, but usable also for IPv4, all hosts and environments.
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*
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* The memory allocated by this function *MUST* be free'd later on calling
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* Curl_freeaddrinfo(). For each successful call to this function there
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* must be an associated call later to Curl_freeaddrinfo().
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*
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* Curl_addrinfo defined in "lib/curl_addrinfo.h"
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*
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* struct Curl_addrinfo {
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* int ai_flags;
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* int ai_family;
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* int ai_socktype;
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* int ai_protocol;
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2009-05-01 22:37:32 -04:00
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* curl_socklen_t ai_addrlen; * Follow rfc3493 struct addrinfo *
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2008-10-30 09:45:25 -04:00
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* char *ai_canonname;
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* struct sockaddr *ai_addr;
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* struct Curl_addrinfo *ai_next;
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* };
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* typedef struct Curl_addrinfo Curl_addrinfo;
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*
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* hostent defined in <netdb.h>
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*
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* struct hostent {
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* char *h_name;
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* char **h_aliases;
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* int h_addrtype;
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* int h_length;
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* char **h_addr_list;
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* };
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*
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* for backward compatibility:
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*
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* #define h_addr h_addr_list[0]
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*/
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Curl_addrinfo *
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Curl_he2ai(const struct hostent *he, int port)
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{
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Curl_addrinfo *ai;
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Curl_addrinfo *prevai = NULL;
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Curl_addrinfo *firstai = NULL;
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struct sockaddr_in *addr;
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#ifdef ENABLE_IPV6
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struct sockaddr_in6 *addr6;
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#endif
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CURLcode result = CURLE_OK;
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int i;
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char *curr;
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if(!he)
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/* no input == no output! */
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return NULL;
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2008-11-06 12:19:56 -05:00
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DEBUGASSERT((he->h_name != NULL) && (he->h_addr_list != NULL));
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2008-10-30 09:45:25 -04:00
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for(i=0; (curr = he->h_addr_list[i]) != NULL; i++) {
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2009-04-14 08:53:53 -04:00
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size_t ss_size;
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2008-10-30 09:45:25 -04:00
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#ifdef ENABLE_IPV6
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2011-04-20 09:17:42 -04:00
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if(he->h_addrtype == AF_INET6)
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2008-10-30 09:45:25 -04:00
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ss_size = sizeof (struct sockaddr_in6);
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else
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#endif
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ss_size = sizeof (struct sockaddr_in);
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if((ai = calloc(1, sizeof(Curl_addrinfo))) == NULL) {
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result = CURLE_OUT_OF_MEMORY;
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break;
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}
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if((ai->ai_canonname = strdup(he->h_name)) == NULL) {
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result = CURLE_OUT_OF_MEMORY;
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free(ai);
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break;
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}
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if((ai->ai_addr = calloc(1, ss_size)) == NULL) {
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result = CURLE_OUT_OF_MEMORY;
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free(ai->ai_canonname);
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free(ai);
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break;
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}
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if(!firstai)
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/* store the pointer we want to return from this function */
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firstai = ai;
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if(prevai)
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/* make the previous entry point to this */
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prevai->ai_next = ai;
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ai->ai_family = he->h_addrtype;
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/* we return all names as STREAM, so when using this address for TFTP
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the type must be ignored and conn->socktype be used instead! */
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ai->ai_socktype = SOCK_STREAM;
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2009-05-10 06:24:53 -04:00
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ai->ai_addrlen = (curl_socklen_t)ss_size;
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2008-10-30 09:45:25 -04:00
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/* leave the rest of the struct filled with zero */
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switch (ai->ai_family) {
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case AF_INET:
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2008-11-06 12:19:56 -05:00
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addr = (void *)ai->ai_addr; /* storage area for this info */
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2008-10-30 09:45:25 -04:00
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memcpy(&addr->sin_addr, curr, sizeof(struct in_addr));
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addr->sin_family = (unsigned short)(he->h_addrtype);
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addr->sin_port = htons((unsigned short)port);
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break;
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#ifdef ENABLE_IPV6
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case AF_INET6:
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2008-11-06 12:19:56 -05:00
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addr6 = (void *)ai->ai_addr; /* storage area for this info */
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2008-10-30 09:45:25 -04:00
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memcpy(&addr6->sin6_addr, curr, sizeof(struct in6_addr));
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addr6->sin6_family = (unsigned short)(he->h_addrtype);
|
|
|
|
addr6->sin6_port = htons((unsigned short)port);
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
prevai = ai;
|
|
|
|
}
|
|
|
|
|
|
|
|
if(result != CURLE_OK) {
|
|
|
|
Curl_freeaddrinfo(firstai);
|
|
|
|
firstai = NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
return firstai;
|
|
|
|
}
|
|
|
|
|
2008-10-30 15:02:23 -04:00
|
|
|
|
2008-11-06 12:19:56 -05:00
|
|
|
struct namebuff {
|
|
|
|
struct hostent hostentry;
|
|
|
|
union {
|
|
|
|
struct in_addr ina4;
|
|
|
|
#ifdef ENABLE_IPV6
|
|
|
|
struct in6_addr ina6;
|
|
|
|
#endif
|
|
|
|
} addrentry;
|
|
|
|
char *h_addr_list[2];
|
|
|
|
};
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Curl_ip2addr()
|
|
|
|
*
|
|
|
|
* This function takes an internet address, in binary form, as input parameter
|
|
|
|
* along with its address family and the string version of the address, and it
|
|
|
|
* returns a Curl_addrinfo chain filled in correctly with information for the
|
|
|
|
* given address/host
|
|
|
|
*/
|
|
|
|
|
|
|
|
Curl_addrinfo *
|
|
|
|
Curl_ip2addr(int af, const void *inaddr, const char *hostname, int port)
|
|
|
|
{
|
|
|
|
Curl_addrinfo *ai;
|
|
|
|
|
2009-12-30 12:59:56 -05:00
|
|
|
#if defined(__VMS) && \
|
2008-11-06 12:19:56 -05:00
|
|
|
defined(__INITIAL_POINTER_SIZE) && (__INITIAL_POINTER_SIZE == 64)
|
|
|
|
#pragma pointer_size save
|
|
|
|
#pragma pointer_size short
|
|
|
|
#pragma message disable PTRMISMATCH
|
|
|
|
#endif
|
|
|
|
|
|
|
|
struct hostent *h;
|
|
|
|
struct namebuff *buf;
|
|
|
|
char *addrentry;
|
|
|
|
char *hoststr;
|
2009-04-13 03:18:39 -04:00
|
|
|
size_t addrsize;
|
2008-11-06 12:19:56 -05:00
|
|
|
|
|
|
|
DEBUGASSERT(inaddr && hostname);
|
|
|
|
|
|
|
|
buf = malloc(sizeof(struct namebuff));
|
|
|
|
if(!buf)
|
|
|
|
return NULL;
|
|
|
|
|
|
|
|
hoststr = strdup(hostname);
|
|
|
|
if(!hoststr) {
|
|
|
|
free(buf);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
switch(af) {
|
|
|
|
case AF_INET:
|
|
|
|
addrsize = sizeof(struct in_addr);
|
|
|
|
addrentry = (void *)&buf->addrentry.ina4;
|
|
|
|
memcpy(addrentry, inaddr, sizeof(struct in_addr));
|
|
|
|
break;
|
|
|
|
#ifdef ENABLE_IPV6
|
|
|
|
case AF_INET6:
|
|
|
|
addrsize = sizeof(struct in6_addr);
|
|
|
|
addrentry = (void *)&buf->addrentry.ina6;
|
|
|
|
memcpy(addrentry, inaddr, sizeof(struct in6_addr));
|
|
|
|
break;
|
|
|
|
#endif
|
|
|
|
default:
|
|
|
|
free(hoststr);
|
|
|
|
free(buf);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
h = &buf->hostentry;
|
|
|
|
h->h_name = hoststr;
|
|
|
|
h->h_aliases = NULL;
|
|
|
|
h->h_addrtype = (short)af;
|
|
|
|
h->h_length = (short)addrsize;
|
|
|
|
h->h_addr_list = &buf->h_addr_list[0];
|
|
|
|
h->h_addr_list[0] = addrentry;
|
|
|
|
h->h_addr_list[1] = NULL; /* terminate list of entries */
|
|
|
|
|
2009-12-30 12:59:56 -05:00
|
|
|
#if defined(__VMS) && \
|
2008-11-06 12:19:56 -05:00
|
|
|
defined(__INITIAL_POINTER_SIZE) && (__INITIAL_POINTER_SIZE == 64)
|
|
|
|
#pragma pointer_size restore
|
|
|
|
#pragma message enable PTRMISMATCH
|
|
|
|
#endif
|
|
|
|
|
|
|
|
ai = Curl_he2ai(h, port);
|
|
|
|
|
|
|
|
free(hoststr);
|
|
|
|
free(buf);
|
|
|
|
|
|
|
|
return ai;
|
|
|
|
}
|
|
|
|
|
2010-11-05 17:31:40 -04:00
|
|
|
/*
|
|
|
|
* Given an IPv4 or IPv6 dotted string address, this converts it to a proper
|
|
|
|
* allocated Curl_addrinfo struct and returns it.
|
|
|
|
*/
|
|
|
|
Curl_addrinfo *Curl_str2addr(char *address, int port)
|
|
|
|
{
|
|
|
|
struct in_addr in;
|
|
|
|
if(Curl_inet_pton(AF_INET, address, &in) > 0)
|
|
|
|
/* This is a dotted IP address 123.123.123.123-style */
|
|
|
|
return Curl_ip2addr(AF_INET, &in, address, port);
|
|
|
|
#ifdef ENABLE_IPV6
|
|
|
|
else {
|
|
|
|
struct in6_addr in6;
|
|
|
|
if(Curl_inet_pton(AF_INET6, address, &in6) > 0)
|
|
|
|
/* This is a dotted IPv6 address ::1-style */
|
|
|
|
return Curl_ip2addr(AF_INET6, &in6, address, port);
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
return NULL; /* bad input format */
|
|
|
|
}
|
2008-11-06 12:19:56 -05:00
|
|
|
|
2008-10-30 15:02:23 -04:00
|
|
|
#if defined(CURLDEBUG) && defined(HAVE_FREEADDRINFO)
|
|
|
|
/*
|
|
|
|
* curl_dofreeaddrinfo()
|
|
|
|
*
|
2008-11-01 10:51:37 -04:00
|
|
|
* This is strictly for memory tracing and are using the same style as the
|
2008-10-30 15:02:23 -04:00
|
|
|
* family otherwise present in memdebug.c. I put these ones here since they
|
2011-04-19 09:55:37 -04:00
|
|
|
* require a bunch of structs I didn't want to include in memdebug.c
|
2008-10-30 15:02:23 -04:00
|
|
|
*/
|
|
|
|
|
|
|
|
void
|
|
|
|
curl_dofreeaddrinfo(struct addrinfo *freethis,
|
|
|
|
int line, const char *source)
|
|
|
|
{
|
|
|
|
(freeaddrinfo)(freethis);
|
2010-01-18 15:22:04 -05:00
|
|
|
curl_memlog("ADDR %s:%d freeaddrinfo(%p)\n",
|
|
|
|
source, line, (void *)freethis);
|
2008-10-30 15:02:23 -04:00
|
|
|
}
|
|
|
|
#endif /* defined(CURLDEBUG) && defined(HAVE_FREEADDRINFO) */
|
|
|
|
|
|
|
|
|
|
|
|
#if defined(CURLDEBUG) && defined(HAVE_GETADDRINFO)
|
|
|
|
/*
|
|
|
|
* curl_dogetaddrinfo()
|
|
|
|
*
|
2008-11-01 10:51:37 -04:00
|
|
|
* This is strictly for memory tracing and are using the same style as the
|
2008-10-30 15:02:23 -04:00
|
|
|
* family otherwise present in memdebug.c. I put these ones here since they
|
2011-04-19 09:55:37 -04:00
|
|
|
* require a bunch of structs I didn't want to include in memdebug.c
|
2008-10-30 15:02:23 -04:00
|
|
|
*/
|
|
|
|
|
|
|
|
int
|
|
|
|
curl_dogetaddrinfo(const char *hostname,
|
|
|
|
const char *service,
|
|
|
|
const struct addrinfo *hints,
|
|
|
|
struct addrinfo **result,
|
|
|
|
int line, const char *source)
|
|
|
|
{
|
|
|
|
int res=(getaddrinfo)(hostname, service, hints, result);
|
2010-01-18 15:22:04 -05:00
|
|
|
if(0 == res)
|
2008-10-30 15:02:23 -04:00
|
|
|
/* success */
|
2010-01-18 15:22:04 -05:00
|
|
|
curl_memlog("ADDR %s:%d getaddrinfo() = %p\n",
|
|
|
|
source, line, (void *)*result);
|
|
|
|
else
|
|
|
|
curl_memlog("ADDR %s:%d getaddrinfo() failed\n",
|
|
|
|
source, line);
|
2008-10-30 15:02:23 -04:00
|
|
|
return res;
|
|
|
|
}
|
|
|
|
#endif /* defined(CURLDEBUG) && defined(HAVE_GETADDRINFO) */
|
|
|
|
|