1999-12-29 15:20:26 +01:00
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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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2001-10-04 15:25:12 +02:00
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* Copyright (C) 2001, Daniel Stenberg, <daniel@haxx.se>, et al.
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1999-12-29 15:20:26 +01:00
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*
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2001-01-03 10:29:33 +01:00
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* In order to be useful for every potential user, curl and libcurl are
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* dual-licensed under the MPL and the MIT/X-derivate licenses.
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1999-12-29 15:20:26 +01:00
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*
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2001-01-03 10:29:33 +01:00
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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 MPL or the MIT/X-derivate
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* licenses. You may pick one of these licenses.
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1999-12-29 15:20:26 +01:00
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*
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2001-01-03 10:29:33 +01:00
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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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1999-12-29 15:20:26 +01:00
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*
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2001-01-03 10:29:33 +01:00
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* $Id$
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*****************************************************************************/
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1999-12-29 15:20:26 +01:00
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2000-08-24 16:26:33 +02:00
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#include "setup.h"
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1999-12-29 15:20:26 +01:00
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#include <string.h>
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2000-08-23 09:23:42 +02:00
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#include <errno.h>
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1999-12-29 15:20:26 +01:00
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2000-08-23 09:23:42 +02:00
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#define _REENTRANT
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1999-12-29 15:20:26 +01:00
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#if defined(WIN32) && !defined(__GNUC__) || defined(__MINGW32__)
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#include <winsock.h>
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#else
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#ifdef HAVE_SYS_SOCKET_H
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#include <sys/socket.h>
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#endif
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2000-08-23 09:23:42 +02:00
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#ifdef HAVE_NETINET_IN_H
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1999-12-29 15:20:26 +01:00
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#include <netinet/in.h>
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2000-08-23 09:23:42 +02:00
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#endif
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#ifdef HAVE_NETDB_H
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1999-12-29 15:20:26 +01:00
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#include <netdb.h>
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2000-08-23 09:23:42 +02:00
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#endif
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1999-12-29 15:20:26 +01:00
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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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2001-12-04 14:03:08 +01:00
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#ifdef HAVE_STDLIB_H
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#include <stdlib.h> /* required for free() prototypes */
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#endif
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2001-08-06 14:19:26 +02:00
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#ifdef VMS
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#include <inet.h>
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#include <stdlib.h>
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#endif
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1999-12-29 15:20:26 +01:00
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#endif
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#include "urldata.h"
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#include "sendf.h"
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2001-09-28 09:05:26 +02:00
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#include "hostip.h"
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2002-01-03 11:22:59 +01:00
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#include "hash.h"
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1999-12-29 15:20:26 +01:00
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2002-01-17 09:03:48 +01:00
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#define _MPRINTF_REPLACE /* use our functions only */
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#include <curl/mprintf.h>
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2000-08-24 14:33:16 +02:00
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#if defined(HAVE_INET_NTOA_R) && !defined(HAVE_INET_NTOA_R_DECL)
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2000-05-30 00:51:13 +02:00
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#include "inet_ntoa_r.h"
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#endif
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2000-10-09 13:12:34 +02:00
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/* The last #include file should be: */
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#ifdef MALLOCDEBUG
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#include "memdebug.h"
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#endif
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2002-01-03 11:22:59 +01:00
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static curl_hash hostname_cache;
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2002-01-07 21:52:32 +01:00
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static int host_cache_initialized;
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2002-01-03 11:22:59 +01:00
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2002-01-07 21:52:32 +01:00
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void Curl_global_host_cache_init(void)
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2002-01-03 11:22:59 +01:00
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{
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2002-01-07 21:52:32 +01:00
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if (!host_cache_initialized) {
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curl_hash_init(&hostname_cache, 7, Curl_freeaddrinfo);
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host_cache_initialized = 1;
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}
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2002-01-03 11:22:59 +01:00
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}
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2002-01-07 21:52:32 +01:00
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curl_hash *Curl_global_host_cache_get(void)
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2002-01-03 11:22:59 +01:00
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{
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2002-01-07 21:52:32 +01:00
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return &hostname_cache;
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2002-01-03 11:22:59 +01:00
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}
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2002-01-07 21:52:32 +01:00
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void Curl_global_host_cache_dtor(void)
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{
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if (host_cache_initialized) {
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curl_hash_clean(&hostname_cache);
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2002-01-07 21:55:35 +01:00
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host_cache_initialized = 0;
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2002-01-07 21:52:32 +01:00
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}
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}
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2002-01-03 11:22:59 +01:00
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2002-01-08 05:26:47 +01:00
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struct curl_dns_cache_entry {
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Curl_addrinfo *addr;
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2002-01-08 05:30:59 +01:00
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time_t timestamp;
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2002-01-08 05:26:47 +01:00
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};
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2002-01-17 08:38:25 +01:00
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/* count the number of characters that an integer takes up */
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2002-01-17 07:55:37 +01:00
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static int _num_chars(int i)
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{
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int chars = 0;
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2002-01-17 08:38:25 +01:00
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/* While the number divided by 10 is greater than one,
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* re-divide the number by 10, and increment the number of
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* characters by 1.
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*
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* this relies on the fact that for every multiple of 10,
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* a new digit is added onto every number
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*/
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2002-01-17 07:55:37 +01:00
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do {
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chars++;
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i = (int) i / 10;
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} while (i > 1);
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return chars;
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}
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2002-01-17 08:38:25 +01:00
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/* Create a hostcache id */
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2002-01-17 07:55:37 +01:00
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static char *
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2002-01-17 09:03:48 +01:00
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_create_hostcache_id(char *server, int port, ssize_t *entry_len)
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2002-01-17 07:55:37 +01:00
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{
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char *id = NULL;
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2002-01-17 08:38:25 +01:00
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/* Get the length of the new entry id */
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*entry_len = *entry_len + /* Hostname length */
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1 + /* The ':' seperator */
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_num_chars(port); /* The number of characters the port will take up */
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/* Allocate the new entry id */
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id = malloc(*entry_len + 1);
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2002-01-17 07:55:37 +01:00
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if (!id) {
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return NULL;
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}
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2002-01-17 08:38:25 +01:00
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/* Create the new entry */
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/* If sprintf() doesn't return the entry length, that signals failure */
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if (sprintf(id, "%s:%d", server, port) != *entry_len) {
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/* Free the allocated id, set length to zero and return NULL */
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*entry_len = 0;
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2002-01-17 07:55:37 +01:00
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free(id);
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return NULL;
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}
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return id;
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}
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2002-01-17 08:38:25 +01:00
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/* Macro to save redundant free'ing of entry_id */
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#define _hostcache_return(__v) \
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{ \
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free(entry_id); \
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return (__v); \
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}
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2002-01-17 07:55:37 +01:00
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2002-01-03 11:22:59 +01:00
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Curl_addrinfo *Curl_resolv(struct SessionHandle *data,
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char *hostname,
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int port,
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char **bufp)
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{
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2002-01-17 08:38:25 +01:00
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char *entry_id = NULL;
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2002-01-08 05:26:47 +01:00
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struct curl_dns_cache_entry *p = NULL;
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2002-01-17 09:03:48 +01:00
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ssize_t entry_len;
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2002-01-08 05:26:47 +01:00
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time_t now;
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/* If the host cache timeout is 0, we don't do DNS cach'ing
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so fall through */
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if (data->set.dns_cache_timeout == 0) {
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return Curl_getaddrinfo(data, hostname, port, bufp);
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}
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2002-01-03 11:22:59 +01:00
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2002-01-17 08:38:25 +01:00
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/* Create an entry id, based upon the hostname and port */
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entry_len = strlen(hostname);
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entry_id = _create_hostcache_id(hostname, port, &entry_len);
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/* If we can't create the entry id, don't cache, just fall-through
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to the plain Curl_getaddrinfo() */
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if (!entry_id) {
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return Curl_getaddrinfo(data, hostname, port, bufp);
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}
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2002-01-17 07:55:37 +01:00
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2002-01-08 05:26:47 +01:00
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time(&now);
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/* See if its already in our dns cache */
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2002-01-17 08:38:25 +01:00
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if (entry_id && curl_hash_find(data->hostcache, entry_id, entry_len+1, (void **) &p)) {
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2002-01-08 05:26:47 +01:00
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/* Do we need to check for a cache timeout? */
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if (data->set.dns_cache_timeout != -1) {
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/* Return if the entry has not timed out */
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if ((now - p->timestamp) < data->set.dns_cache_timeout) {
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2002-01-17 08:38:25 +01:00
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_hostcache_return(p->addr);
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2002-01-08 05:26:47 +01:00
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}
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}
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else {
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2002-01-17 08:38:25 +01:00
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_hostcache_return(p->addr);
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2002-01-08 05:26:47 +01:00
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}
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}
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/* Create a new cache entry */
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2002-01-17 08:38:25 +01:00
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p = (struct curl_dns_cache_entry *) malloc(sizeof(struct curl_dns_cache_entry));
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if (!p) {
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_hostcache_return(NULL);
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}
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2002-01-08 05:26:47 +01:00
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p->addr = Curl_getaddrinfo(data, hostname, port, bufp);
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if (!p->addr) {
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2002-01-15 00:14:24 +01:00
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free(p);
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2002-01-17 08:38:25 +01:00
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_hostcache_return(NULL);
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2002-01-08 05:26:47 +01:00
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}
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p->timestamp = now;
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/* Save it in our host cache */
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2002-01-17 08:38:25 +01:00
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curl_hash_update(data->hostcache, entry_id, entry_len+1, (const void *) p);
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2002-01-03 11:22:59 +01:00
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2002-01-17 08:38:25 +01:00
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_hostcache_return(p->addr);
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2002-01-03 11:22:59 +01:00
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}
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2001-10-04 15:36:11 +02:00
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/*
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* This is a wrapper function for freeing name information in a protocol
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* independent way. This takes care of using the appropriate underlaying
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* proper function.
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*/
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void Curl_freeaddrinfo(void *freethis)
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{
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2002-01-08 05:26:47 +01:00
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struct curl_dns_cache_entry *p = (struct curl_dns_cache_entry *) freethis;
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2001-10-04 15:36:11 +02:00
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#ifdef ENABLE_IPV6
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2002-01-08 05:26:47 +01:00
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freeaddrinfo(p->addr);
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2001-10-04 15:36:11 +02:00
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#else
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2002-01-08 05:26:47 +01:00
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free(p->addr);
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2001-10-04 15:36:11 +02:00
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#endif
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2002-01-08 05:26:47 +01:00
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free(p);
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2001-10-04 15:36:11 +02:00
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}
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1999-12-29 15:20:26 +01:00
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/* --- resolve name or IP-number --- */
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2001-02-06 00:04:44 +01:00
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#ifdef ENABLE_IPV6
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2001-10-04 15:25:12 +02:00
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#ifdef MALLOCDEBUG
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|
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/* These two are strictly for memory tracing and are using the same
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* style as the family otherwise present in memdebug.c. I put these ones
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* here since they require a bunch of struct types I didn't wanna include
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* in memdebug.c
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*/
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int curl_getaddrinfo(char *hostname, char *service,
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struct addrinfo *hints,
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struct addrinfo **result,
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int line, const char *source)
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{
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int res=(getaddrinfo)(hostname, service, hints, result);
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2001-10-17 14:33:35 +02:00
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if(0 == res) {
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2001-10-04 15:25:12 +02:00
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/* success */
|
2001-10-17 14:33:35 +02:00
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if(logfile)
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fprintf(logfile, "ADDR %s:%d getaddrinfo() = %p\n",
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2002-01-08 08:06:07 +01:00
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source, line, (void *)*result);
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2001-10-17 14:33:35 +02:00
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}
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else {
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if(logfile)
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fprintf(logfile, "ADDR %s:%d getaddrinfo() failed\n",
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source, line);
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}
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2001-10-04 15:25:12 +02:00
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return res;
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}
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2001-10-17 14:33:35 +02:00
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2001-10-04 15:25:12 +02:00
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|
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void curl_freeaddrinfo(struct addrinfo *freethis,
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int line, const char *source)
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|
|
|
{
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(freeaddrinfo)(freethis);
|
2001-10-17 14:33:35 +02:00
|
|
|
if(logfile)
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|
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fprintf(logfile, "ADDR %s:%d freeaddrinfo(%p)\n",
|
2002-01-08 08:06:07 +01:00
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source, line, (void *)freethis);
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2001-10-04 15:25:12 +02:00
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}
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#endif
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|
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/*
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|
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* Return name information about the given hostname and port number. If
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* successful, the 'addrinfo' is returned and the forth argument will point to
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* memory we need to free after use. That meory *MUST* be freed with
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* Curl_freeaddrinfo(), nothing else.
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*/
|
2001-09-28 09:05:26 +02:00
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|
|
Curl_addrinfo *Curl_getaddrinfo(struct SessionHandle *data,
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char *hostname,
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|
|
int port,
|
|
|
|
char **bufp)
|
2001-02-06 00:04:44 +01:00
|
|
|
{
|
|
|
|
struct addrinfo hints, *res;
|
|
|
|
int error;
|
|
|
|
char sbuf[NI_MAXSERV];
|
|
|
|
|
|
|
|
memset(&hints, 0, sizeof(hints));
|
|
|
|
hints.ai_family = PF_UNSPEC;
|
|
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
|
|
hints.ai_flags = AI_CANONNAME;
|
|
|
|
snprintf(sbuf, sizeof(sbuf), "%d", port);
|
|
|
|
error = getaddrinfo(hostname, sbuf, &hints, &res);
|
|
|
|
if (error) {
|
2001-10-04 15:25:12 +02:00
|
|
|
infof(data, "getaddrinfo(3) failed for %s\n", hostname);
|
2001-02-06 00:04:44 +01:00
|
|
|
return NULL;
|
|
|
|
}
|
2001-10-04 15:25:12 +02:00
|
|
|
*bufp=(char *)res; /* make it point to the result struct */
|
|
|
|
|
2001-02-06 00:04:44 +01:00
|
|
|
return res;
|
|
|
|
}
|
2001-09-28 09:05:26 +02:00
|
|
|
#else /* following code is IPv4-only */
|
2001-02-06 00:04:44 +01:00
|
|
|
|
2001-10-04 15:36:11 +02:00
|
|
|
#ifndef HAVE_GETHOSTBYNAME_R
|
2001-10-03 23:42:04 +02:00
|
|
|
/**
|
2001-10-23 14:11:43 +02:00
|
|
|
* Performs a "deep" copy of a hostent into a buffer (returns a pointer to the
|
|
|
|
* copy). Make absolutely sure the destination buffer is big enough!
|
2001-10-03 23:42:04 +02:00
|
|
|
*
|
|
|
|
* Keith McGuigan
|
2001-10-23 14:11:43 +02:00
|
|
|
* 10/3/2001 */
|
2001-10-03 23:42:04 +02:00
|
|
|
static struct hostent* pack_hostent(char* buf, struct hostent* orig)
|
|
|
|
{
|
|
|
|
char* bufptr;
|
|
|
|
struct hostent* copy;
|
|
|
|
|
|
|
|
int i;
|
|
|
|
char* str;
|
|
|
|
int len;
|
|
|
|
|
|
|
|
bufptr = buf;
|
|
|
|
copy = (struct hostent*)bufptr;
|
|
|
|
|
|
|
|
bufptr += sizeof(struct hostent);
|
|
|
|
copy->h_name = bufptr;
|
|
|
|
len = strlen(orig->h_name) + 1;
|
|
|
|
strncpy(bufptr, orig->h_name, len);
|
|
|
|
bufptr += len;
|
|
|
|
|
2001-10-23 14:11:43 +02:00
|
|
|
/* we align on even 64bit boundaries for safety */
|
|
|
|
#define MEMALIGN(x) (((unsigned long)(x)&0xfffffff8)+8)
|
|
|
|
|
|
|
|
/* This must be aligned properly to work on many CPU architectures! */
|
|
|
|
copy->h_aliases = (char**)MEMALIGN(bufptr);
|
2001-10-03 23:42:04 +02:00
|
|
|
|
|
|
|
/* Figure out how many aliases there are */
|
|
|
|
for (i = 0; orig->h_aliases[i] != NULL; ++i);
|
|
|
|
|
|
|
|
/* Reserve room for the array */
|
|
|
|
bufptr += (i + 1) * sizeof(char*);
|
|
|
|
|
2001-10-23 14:11:43 +02:00
|
|
|
/* Clone all known aliases */
|
|
|
|
for(i = 0; (str = orig->h_aliases[i]); i++) {
|
2001-10-03 23:42:04 +02:00
|
|
|
len = strlen(str) + 1;
|
|
|
|
strncpy(bufptr, str, len);
|
|
|
|
copy->h_aliases[i] = bufptr;
|
|
|
|
bufptr += len;
|
|
|
|
}
|
2001-10-23 14:11:43 +02:00
|
|
|
/* Terminate the alias list with a NULL */
|
2001-10-03 23:42:04 +02:00
|
|
|
copy->h_aliases[i] = NULL;
|
|
|
|
|
|
|
|
copy->h_addrtype = orig->h_addrtype;
|
|
|
|
copy->h_length = orig->h_length;
|
|
|
|
|
2001-10-23 14:11:43 +02:00
|
|
|
/* align it for (at least) 32bit accesses */
|
|
|
|
bufptr = (char *)MEMALIGN(bufptr);
|
|
|
|
|
2001-10-03 23:42:04 +02:00
|
|
|
copy->h_addr_list = (char**)bufptr;
|
|
|
|
|
|
|
|
/* Figure out how many addresses there are */
|
|
|
|
for (i = 0; orig->h_addr_list[i] != NULL; ++i);
|
|
|
|
|
|
|
|
/* Reserve room for the array */
|
|
|
|
bufptr += (i + 1) * sizeof(char*);
|
|
|
|
|
|
|
|
i = 0;
|
|
|
|
len = orig->h_length;
|
|
|
|
str = orig->h_addr_list[i];
|
|
|
|
while (str != NULL) {
|
|
|
|
memcpy(bufptr, str, len);
|
|
|
|
copy->h_addr_list[i] = bufptr;
|
|
|
|
bufptr += len;
|
|
|
|
str = orig->h_addr_list[++i];
|
|
|
|
}
|
|
|
|
copy->h_addr_list[i] = NULL;
|
|
|
|
|
|
|
|
return copy;
|
|
|
|
}
|
2001-10-04 15:36:11 +02:00
|
|
|
#endif
|
2001-10-03 23:42:04 +02:00
|
|
|
|
2001-09-28 09:46:39 +02:00
|
|
|
static char *MakeIP(unsigned long num,char *addr, int addr_len)
|
|
|
|
{
|
|
|
|
#if defined(HAVE_INET_NTOA) || defined(HAVE_INET_NTOA_R)
|
|
|
|
struct in_addr in;
|
|
|
|
in.s_addr = htonl(num);
|
|
|
|
|
|
|
|
#if defined(HAVE_INET_NTOA_R)
|
|
|
|
inet_ntoa_r(in,addr,addr_len);
|
|
|
|
#else
|
|
|
|
strncpy(addr,inet_ntoa(in),addr_len);
|
|
|
|
#endif
|
|
|
|
#else
|
|
|
|
unsigned char *paddr;
|
|
|
|
|
|
|
|
num = htonl(num); /* htonl() added to avoid endian probs */
|
|
|
|
paddr = (unsigned char *)#
|
|
|
|
sprintf(addr, "%u.%u.%u.%u", paddr[0], paddr[1], paddr[2], paddr[3]);
|
|
|
|
#endif
|
|
|
|
return (addr);
|
|
|
|
}
|
|
|
|
|
2001-01-05 11:11:41 +01:00
|
|
|
/* The original code to this function was once stolen from the Dancer source
|
|
|
|
code, written by Bjorn Reese, it has since been patched and modified
|
|
|
|
considerably. */
|
|
|
|
|
1999-12-29 15:20:26 +01:00
|
|
|
#ifndef INADDR_NONE
|
|
|
|
#define INADDR_NONE (unsigned long) ~0
|
|
|
|
#endif
|
2001-01-05 11:11:41 +01:00
|
|
|
|
2001-09-28 09:05:26 +02:00
|
|
|
Curl_addrinfo *Curl_getaddrinfo(struct SessionHandle *data,
|
|
|
|
char *hostname,
|
|
|
|
int port,
|
|
|
|
char **bufp)
|
1999-12-29 15:20:26 +01:00
|
|
|
{
|
|
|
|
struct hostent *h = NULL;
|
2002-01-02 11:06:47 +01:00
|
|
|
in_addr_t in;
|
2000-11-21 10:29:21 +01:00
|
|
|
int ret; /* this variable is unused on several platforms but used on some */
|
1999-12-29 15:20:26 +01:00
|
|
|
|
2000-09-21 10:47:48 +02:00
|
|
|
#define CURL_NAMELOOKUP_SIZE 9000
|
|
|
|
/* Allocate enough memory to hold the full name information structs and
|
|
|
|
* everything. OSF1 is known to require at least 8872 bytes. The buffer
|
|
|
|
* required for storing all possible aliases and IP numbers is according to
|
|
|
|
* Stevens' Unix Network Programming 2nd editor, p. 304: 8192 bytes! */
|
2002-01-18 13:59:33 +01:00
|
|
|
int *buf = (int *)malloc(CURL_NAMELOOKUP_SIZE);
|
2000-09-21 10:47:48 +02:00
|
|
|
if(!buf)
|
|
|
|
return NULL; /* major failure */
|
2002-01-18 13:59:33 +01:00
|
|
|
*bufp = (char *)buf;
|
2001-09-12 10:59:00 +02:00
|
|
|
|
2001-09-28 09:05:26 +02:00
|
|
|
port=0; /* unused in IPv4 code */
|
2001-05-30 13:06:33 +02:00
|
|
|
ret = 0; /* to prevent the compiler warning */
|
|
|
|
|
1999-12-29 15:20:26 +01:00
|
|
|
if ( (in=inet_addr(hostname)) != INADDR_NONE ) {
|
2000-05-30 00:51:13 +02:00
|
|
|
struct in_addr *addrentry;
|
|
|
|
|
|
|
|
h = (struct hostent*)buf;
|
|
|
|
h->h_addr_list = (char**)(buf + sizeof(*h));
|
|
|
|
addrentry = (struct in_addr*)(h->h_addr_list + 2);
|
|
|
|
addrentry->s_addr = in;
|
|
|
|
h->h_addr_list[0] = (char*)addrentry;
|
|
|
|
h->h_addr_list[1] = NULL;
|
|
|
|
h->h_addrtype = AF_INET;
|
|
|
|
h->h_length = sizeof(*addrentry);
|
2000-05-31 08:31:31 +02:00
|
|
|
h->h_name = *(h->h_addr_list) + h->h_length;
|
|
|
|
/* bad one h->h_name = (char*)(h->h_addr_list + h->h_length); */
|
2000-09-21 10:47:48 +02:00
|
|
|
MakeIP(ntohl(in),h->h_name, CURL_NAMELOOKUP_SIZE - (long)(h->h_name) + (long)buf);
|
2000-05-30 00:51:13 +02:00
|
|
|
}
|
2000-08-04 13:27:17 +02:00
|
|
|
#if defined(HAVE_GETHOSTBYNAME_R)
|
2000-05-30 00:51:13 +02:00
|
|
|
else {
|
|
|
|
int h_errnop;
|
2000-09-21 10:47:48 +02:00
|
|
|
/* Workaround for gethostbyname_r bug in qnx nto. It is also _required_
|
|
|
|
for some of these functions. */
|
|
|
|
memset(buf, 0, CURL_NAMELOOKUP_SIZE);
|
2000-08-04 13:27:17 +02:00
|
|
|
#ifdef HAVE_GETHOSTBYNAME_R_5
|
2000-05-31 00:27:39 +02:00
|
|
|
/* Solaris, IRIX and more */
|
2000-05-30 00:51:13 +02:00
|
|
|
if ((h = gethostbyname_r(hostname,
|
2000-08-04 13:27:17 +02:00
|
|
|
(struct hostent *)buf,
|
2002-01-18 13:59:33 +01:00
|
|
|
(char *)buf + sizeof(struct hostent),
|
2000-09-21 10:47:48 +02:00
|
|
|
CURL_NAMELOOKUP_SIZE - sizeof(struct hostent),
|
2000-08-04 13:27:17 +02:00
|
|
|
&h_errnop)) == NULL )
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_GETHOSTBYNAME_R_6
|
|
|
|
/* Linux */
|
|
|
|
if( gethostbyname_r(hostname,
|
|
|
|
(struct hostent *)buf,
|
2002-01-28 20:23:18 +01:00
|
|
|
(char *)buf + sizeof(struct hostent),
|
2000-09-21 10:47:48 +02:00
|
|
|
CURL_NAMELOOKUP_SIZE - sizeof(struct hostent),
|
2000-08-04 13:27:17 +02:00
|
|
|
&h, /* DIFFERENCE */
|
|
|
|
&h_errnop))
|
|
|
|
#endif
|
|
|
|
#ifdef HAVE_GETHOSTBYNAME_R_3
|
2000-08-17 23:07:22 +02:00
|
|
|
/* AIX, Digital Unix, HPUX 10, more? */
|
2000-08-04 13:27:17 +02:00
|
|
|
|
2000-09-21 10:47:48 +02:00
|
|
|
if(CURL_NAMELOOKUP_SIZE >=
|
|
|
|
(sizeof(struct hostent)+sizeof(struct hostent_data)))
|
2000-08-04 13:27:17 +02:00
|
|
|
|
2000-09-21 10:47:48 +02:00
|
|
|
/* August 22nd, 2000: Albert Chin-A-Young brought an updated version
|
|
|
|
* that should work! September 20: Richard Prescott worked on the buffer
|
|
|
|
* size dilemma. */
|
2000-08-23 09:23:42 +02:00
|
|
|
|
2000-09-21 10:47:48 +02:00
|
|
|
ret = gethostbyname_r(hostname,
|
|
|
|
(struct hostent *)buf,
|
|
|
|
(struct hostent_data *)(buf + sizeof(struct hostent)));
|
|
|
|
else
|
|
|
|
ret = -1; /* failure, too smallish buffer size */
|
|
|
|
|
2000-08-23 09:23:42 +02:00
|
|
|
/* result expected in h */
|
|
|
|
h = (struct hostent*)buf;
|
2000-08-17 23:07:22 +02:00
|
|
|
h_errnop= errno; /* we don't deal with this, but set it anyway */
|
2000-08-23 09:23:42 +02:00
|
|
|
if(ret)
|
2000-05-31 00:27:39 +02:00
|
|
|
#endif
|
|
|
|
{
|
2000-05-30 00:51:13 +02:00
|
|
|
infof(data, "gethostbyname_r(2) failed for %s\n", hostname);
|
2000-09-18 23:16:27 +02:00
|
|
|
h = NULL; /* set return code to NULL */
|
2000-09-21 10:47:48 +02:00
|
|
|
free(buf);
|
2000-11-21 16:35:45 +01:00
|
|
|
*bufp=NULL;
|
2000-05-30 00:51:13 +02:00
|
|
|
}
|
|
|
|
#else
|
|
|
|
else {
|
|
|
|
if ((h = gethostbyname(hostname)) == NULL ) {
|
|
|
|
infof(data, "gethostbyname(2) failed for %s\n", hostname);
|
2001-09-12 10:59:00 +02:00
|
|
|
free(buf);
|
|
|
|
*bufp=NULL;
|
2000-05-30 00:51:13 +02:00
|
|
|
}
|
2001-10-03 23:42:04 +02:00
|
|
|
else
|
|
|
|
/* we make a copy of the hostent right now, right here, as the
|
|
|
|
static one we got a pointer to might get removed when we don't
|
|
|
|
want/expect that */
|
|
|
|
h = pack_hostent(buf, h);
|
2000-05-30 00:51:13 +02:00
|
|
|
#endif
|
1999-12-29 15:20:26 +01:00
|
|
|
}
|
|
|
|
return (h);
|
|
|
|
}
|
2001-09-07 06:01:32 +02:00
|
|
|
|
2001-09-28 09:05:26 +02:00
|
|
|
#endif /* end of IPv4-specific code */
|
|
|
|
|
2001-09-07 06:01:32 +02:00
|
|
|
/*
|
|
|
|
* local variables:
|
|
|
|
* eval: (load-file "../curl-mode.el")
|
|
|
|
* end:
|
2001-10-11 11:32:19 +02:00
|
|
|
* vim600: fdm=marker
|
|
|
|
* vim: et sw=2 ts=2 sts=2 tw=78
|
2001-09-07 06:01:32 +02:00
|
|
|
*/
|
2002-01-07 21:52:32 +01:00
|
|
|
|