ENH: Initial import

1 files changed, 170 insertions, 0 deletions

diff --git a/Utilities/cmcurl/hostasyn.c b/Utilities/cmcurl/hostasyn.c
new file mode 100644
index 0000000..b3c9dfa
--- /dev/null
+++ b/Utilities/cmcurl/hostasyn.c
@@ -0,0 +1,170 @@
+/***************************************************************************
+ *                                  _   _ ____  _
+ *  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
+
+#include "curl_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 void addrinfo_callback(void *arg, /* "struct connectdata *" */
+                              int status,
+                              void *addr)
+{
+  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 *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);
+
+      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 */
+}
+
+void Curl_addrinfo4_callback(void *arg, /* "struct connectdata *" */
+                             int status,
+                             struct hostent *hostent)
+{
+  addrinfo_callback(arg, status, hostent);
+}
+
+#ifdef CURLRES_IPV6
+void Curl_addrinfo6_callback(void *arg, /* "struct connectdata *" */
+                             int status,
+                             struct addrinfo *ai)
+{
+  addrinfo_callback(arg, status, ai);
+}
+#endif
+
+#endif /* CURLRES_ASYNC */