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-rw-r--r--lib/hostasyn.c152
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diff --git a/lib/hostasyn.c b/lib/hostasyn.c
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+/***************************************************************************
+ * _ _ ____ _
+ * Project ___| | | | _ \| |
+ * / __| | | | |_) | |
+ * | (__| |_| | _ <| |___
+ * \___|\___/|_| \_\_____|
+ *
+ * Copyright (C) 1998 - 2004, 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>
+
+#define _REENTRANT
+
+#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
+
+#if (defined(NETWARE) && defined(__NOVELL_LIBC__))
+#undef in_addr_t
+#define in_addr_t unsigned long
+#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
+
+/* The last #include file should be: */
+#ifdef CURLDEBUG
+#include "memdebug.h"
+#endif
+
+/***********************************************************************
+ * Only for builds using asynchronous name resolves
+ **********************************************************************/
+#ifdef CURLRES_ASYNCH
+/*
+ * Curl_addrinfo_callback() gets called by ares/gethostbyname_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.
+ */
+void Curl_addrinfo_callback(void *arg, /* "struct connectdata *" */
+ int status,
+ Curl_addrinfo *hostent)
+{
+ struct connectdata *conn = (struct connectdata *)arg;
+ struct Curl_dns_entry *dns = NULL;
+
+ conn->async.done = TRUE;
+ 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 *he = Curl_addrinfo_copy(hostent);
+ if(he) {
+ 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, he,
+ conn->async.hostname,
+ conn->async.port);
+
+ if(data->share)
+ Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
+ }
+ }
+
+ conn->async.dns = dns;
+
+ /* ipv4: The input hostent struct will be freed by ares when we return from
+ this function */
+}
+
+#endif /* CURLRES_ASYNC */