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- /***************************************************************************
- * _ _ ____ _
- * Project ___| | | | _ \| |
- * / __| | | | |_) | |
- * | (__| |_| | _ <| |___
- * \___|\___/|_| \_\_____|
- *
- * Copyright (C) 1998 - 2015, Daniel Stenberg, <[email protected]>, 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 https://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.
- *
- ***************************************************************************/
- #include "curl_setup.h"
- #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 __VMS
- #include <in.h>
- #include <inet.h>
- #endif
- #ifdef HAVE_PROCESS_H
- #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"
- #include "curl_memory.h"
- /* The last #include file should be: */
- #include "memdebug.h"
- /***********************************************************************
- * Only for builds using asynchronous name resolves
- **********************************************************************/
- #ifdef CURLRES_ASYNCH
- /*
- * Curl_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, this function takes
- * ownership of the Curl_addrinfo passed, storing the resolved data
- * in the DNS cache.
- *
- * The storage operation locks and unlocks the DNS cache.
- */
- CURLcode Curl_addrinfo_callback(struct connectdata *conn,
- int status,
- struct Curl_addrinfo *ai)
- {
- struct Curl_dns_entry *dns = NULL;
- CURLcode result = CURLE_OK;
- conn->async.status = status;
- if(CURL_ASYNC_SUCCESS == status) {
- if(ai) {
- struct Curl_easy *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);
- result = CURLE_OUT_OF_MEMORY;
- }
- if(data->share)
- Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
- }
- else {
- result = 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 result;
- }
- /* Call this function after Curl_connect() has returned async=TRUE and
- then a successful name resolve has been received.
- Note: this function disconnects and frees the conn data in case of
- resolve failure */
- CURLcode Curl_async_resolved(struct connectdata *conn,
- bool *protocol_done)
- {
- CURLcode result;
- if(conn->async.dns) {
- conn->dns_entry = conn->async.dns;
- conn->async.dns = NULL;
- }
- result = Curl_setup_conn(conn, protocol_done);
- if(result)
- /* We're not allowed to return failure with memory left allocated
- in the connectdata struct, free those here */
- Curl_disconnect(conn, FALSE); /* close the connection */
- return result;
- }
- /*
- * Curl_getaddrinfo() is the generic low-level name resolve API within this
- * source file. There are several versions of this function - for different
- * name resolve layers (selected at build-time). They all take this same set
- * of arguments
- */
- Curl_addrinfo *Curl_getaddrinfo(struct connectdata *conn,
- const char *hostname,
- int port,
- int *waitp)
- {
- return Curl_resolver_getaddrinfo(conn, hostname, port, waitp);
- }
- #endif /* CURLRES_ASYNCH */
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