174 строки
4.8 KiB
C
174 строки
4.8 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 1998 - 2005, Daniel Stenberg, <daniel@haxx.se>, et al.
|
|
*
|
|
* This software is licensed as described in the file COPYING, which
|
|
* you should have received as part of this distribution. The terms
|
|
* are also available at http://curl.haxx.se/docs/copyright.html.
|
|
*
|
|
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
|
|
* copies of the Software, and permit persons to whom the Software is
|
|
* furnished to do so, under the terms of the COPYING file.
|
|
*
|
|
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
|
|
* KIND, either express or implied.
|
|
*
|
|
* $Id$
|
|
***************************************************************************/
|
|
|
|
#include "setup.h"
|
|
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
|
|
#include <malloc.h>
|
|
#else
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#ifdef HAVE_NETINET_IN_H
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#ifdef HAVE_NETDB_H
|
|
#include <netdb.h>
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#ifdef HAVE_STDLIB_H
|
|
#include <stdlib.h> /* required for free() prototypes */
|
|
#endif
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h> /* for the close() proto */
|
|
#endif
|
|
#ifdef VMS
|
|
#include <in.h>
|
|
#include <inet.h>
|
|
#include <stdlib.h>
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_SETJMP_H
|
|
#include <setjmp.h>
|
|
#endif
|
|
|
|
#ifdef WIN32
|
|
#include <process.h>
|
|
#endif
|
|
|
|
#include "urldata.h"
|
|
#include "sendf.h"
|
|
#include "hostip.h"
|
|
#include "hash.h"
|
|
#include "share.h"
|
|
#include "strerror.h"
|
|
#include "url.h"
|
|
|
|
#define _MPRINTF_REPLACE /* use our functions only */
|
|
#include <curl/mprintf.h>
|
|
|
|
#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
|
|
#include "inet_ntoa_r.h"
|
|
#endif
|
|
|
|
#include "memory.h"
|
|
/* The last #include file should be: */
|
|
#include "memdebug.h"
|
|
|
|
/***********************************************************************
|
|
* Only for builds using asynchronous name resolves
|
|
**********************************************************************/
|
|
#ifdef CURLRES_ASYNCH
|
|
/*
|
|
* addrinfo_callback() gets called by ares, gethostbyname_thread() or
|
|
* getaddrinfo_thread() when we got the name resolved (or not!).
|
|
*
|
|
* If the status argument is CURL_ASYNC_SUCCESS, we might need to copy the
|
|
* address field since it might be freed when this function returns. This
|
|
* operation stores the resolved data in the DNS cache.
|
|
*
|
|
* NOTE: for IPv6 operations, Curl_addrinfo_copy() returns the same
|
|
* pointer it is given as argument!
|
|
*
|
|
* The storage operation locks and unlocks the DNS cache.
|
|
*/
|
|
static CURLcode addrinfo_callback(void *arg, /* "struct connectdata *" */
|
|
int status,
|
|
void *addr)
|
|
{
|
|
struct connectdata *conn = (struct connectdata *)arg;
|
|
struct Curl_dns_entry *dns = NULL;
|
|
CURLcode rc = CURLE_OK;
|
|
|
|
conn->async.status = status;
|
|
|
|
if(CURL_ASYNC_SUCCESS == status) {
|
|
|
|
/*
|
|
* IPv4: Curl_addrinfo_copy() copies the address and returns an allocated
|
|
* version.
|
|
*
|
|
* IPv6: Curl_addrinfo_copy() returns the input pointer!
|
|
*/
|
|
Curl_addrinfo *ai = Curl_addrinfo_copy(addr, conn->async.port);
|
|
if(ai) {
|
|
struct SessionHandle *data = conn->data;
|
|
|
|
if(data->share)
|
|
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
|
|
|
|
dns = Curl_cache_addr(data, ai,
|
|
conn->async.hostname,
|
|
conn->async.port);
|
|
if(!dns) {
|
|
/* failed to store, cleanup and return error */
|
|
Curl_freeaddrinfo(ai);
|
|
rc = CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
if(data->share)
|
|
Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
|
|
}
|
|
else
|
|
rc = CURLE_OUT_OF_MEMORY;
|
|
}
|
|
|
|
conn->async.dns = dns;
|
|
|
|
/* Set async.done TRUE last in this function since it may be used multi-
|
|
threaded and once this is TRUE the other thread may read fields from the
|
|
async struct */
|
|
conn->async.done = TRUE;
|
|
|
|
/* ipv4: The input hostent struct will be freed by ares when we return from
|
|
this function */
|
|
return rc;
|
|
}
|
|
|
|
CURLcode Curl_addrinfo4_callback(void *arg, /* "struct connectdata *" */
|
|
int status,
|
|
struct hostent *hostent)
|
|
{
|
|
return addrinfo_callback(arg, status, hostent);
|
|
}
|
|
|
|
#ifdef CURLRES_IPV6
|
|
CURLcode Curl_addrinfo6_callback(void *arg, /* "struct connectdata *" */
|
|
int status,
|
|
struct addrinfo *ai)
|
|
{
|
|
return addrinfo_callback(arg, status, ai);
|
|
}
|
|
#endif
|
|
|
|
#endif /* CURLRES_ASYNC */
|