mirror of
https://github.com/curl/curl.git
synced 2024-12-09 06:30:06 +08:00
56a4db2e4e
- resolving is done for a connection, not for every transfer - save create/dup/free of a cares channel for each transfer - check values of setopt calls against a local channel if no connection has been attached yet, when needed. Closes #12198
125 lines
3.8 KiB
C
125 lines
3.8 KiB
C
/***************************************************************************
|
|
* _ _ ____ _
|
|
* Project ___| | | | _ \| |
|
|
* / __| | | | |_) | |
|
|
* | (__| |_| | _ <| |___
|
|
* \___|\___/|_| \_\_____|
|
|
*
|
|
* Copyright (C) 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 https://curl.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.
|
|
*
|
|
* SPDX-License-Identifier: curl
|
|
*
|
|
***************************************************************************/
|
|
|
|
#include "curl_setup.h"
|
|
|
|
/***********************************************************************
|
|
* Only for builds using asynchronous name resolves
|
|
**********************************************************************/
|
|
#ifdef CURLRES_ASYNCH
|
|
|
|
#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
|
|
|
|
#include "urldata.h"
|
|
#include "sendf.h"
|
|
#include "hostip.h"
|
|
#include "hash.h"
|
|
#include "share.h"
|
|
#include "url.h"
|
|
#include "curl_memory.h"
|
|
/* The last #include file should be: */
|
|
#include "memdebug.h"
|
|
|
|
/*
|
|
* 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 Curl_easy *data,
|
|
int status,
|
|
struct Curl_addrinfo *ai)
|
|
{
|
|
struct connectdata *conn = data->conn;
|
|
struct Curl_dns_entry *dns = NULL;
|
|
CURLcode result = CURLE_OK;
|
|
|
|
conn->resolve_async.status = status;
|
|
|
|
if(CURL_ASYNC_SUCCESS == status) {
|
|
if(ai) {
|
|
if(data->share)
|
|
Curl_share_lock(data, CURL_LOCK_DATA_DNS, CURL_LOCK_ACCESS_SINGLE);
|
|
|
|
dns = Curl_cache_addr(data, ai,
|
|
conn->resolve_async.hostname, 0,
|
|
conn->resolve_async.port);
|
|
if(data->share)
|
|
Curl_share_unlock(data, CURL_LOCK_DATA_DNS);
|
|
|
|
if(!dns) {
|
|
/* failed to store, cleanup and return error */
|
|
Curl_freeaddrinfo(ai);
|
|
result = CURLE_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
else {
|
|
result = CURLE_OUT_OF_MEMORY;
|
|
}
|
|
}
|
|
|
|
conn->resolve_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->resolve_async.done = TRUE;
|
|
|
|
/* IPv4: The input hostent struct will be freed by ares when we return from
|
|
this function */
|
|
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
|
|
*/
|
|
struct Curl_addrinfo *Curl_getaddrinfo(struct Curl_easy *data,
|
|
const char *hostname,
|
|
int port,
|
|
int *waitp)
|
|
{
|
|
return Curl_resolver_getaddrinfo(data, hostname, port, waitp);
|
|
}
|
|
|
|
#endif /* CURLRES_ASYNCH */
|