223 lines
5.7 KiB
C
223 lines
5.7 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"
|
|
|
|
#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 USE_ARES
|
|
#include <ares.h>
|
|
#include <ares_version.h> /* really old c-ares did not include this by
|
|
itself */
|
|
#endif
|
|
|
|
#include "urldata.h"
|
|
#include "asyn.h"
|
|
#include "sendf.h"
|
|
#include "hostip.h"
|
|
#include "hash.h"
|
|
#include "multiif.h"
|
|
#include "select.h"
|
|
#include "share.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
|
|
|
|
|
|
#ifdef USE_ARES
|
|
|
|
#if ARES_VERSION < 0x010600
|
|
#error "requires c-ares 1.6.0 or newer"
|
|
#endif
|
|
|
|
/*
|
|
* Curl_ares_pollset() is called when the outside world (using
|
|
* curl_multi_fdset()) wants to get our fd_set setup and we are talking with
|
|
* ares. The caller must make sure that this function is only called when we
|
|
* have a working ares channel.
|
|
*
|
|
* Returns: sockets-in-use-bitmap
|
|
*/
|
|
|
|
|
|
CURLcode Curl_ares_pollset(struct Curl_easy *data,
|
|
ares_channel channel,
|
|
struct easy_pollset *ps)
|
|
{
|
|
struct timeval maxtime = { CURL_TIMEOUT_RESOLVE, 0 };
|
|
struct timeval timebuf;
|
|
curl_socket_t sockets[16]; /* ARES documented limit */
|
|
unsigned int bitmap, i;
|
|
struct timeval *timeout;
|
|
timediff_t milli;
|
|
CURLcode result = CURLE_OK;
|
|
|
|
DEBUGASSERT(channel);
|
|
if(!channel)
|
|
return CURLE_FAILED_INIT;
|
|
|
|
bitmap = ares_getsock(channel, (ares_socket_t *)sockets,
|
|
CURL_ARRAYSIZE(sockets));
|
|
for(i = 0; i < CURL_ARRAYSIZE(sockets); ++i) {
|
|
int flags = 0;
|
|
if(ARES_GETSOCK_READABLE(bitmap, i))
|
|
flags |= CURL_POLL_IN;
|
|
if(ARES_GETSOCK_WRITABLE(bitmap, i))
|
|
flags |= CURL_POLL_OUT;
|
|
if(!flags)
|
|
break;
|
|
result = Curl_pollset_change(data, ps, sockets[i], flags, 0);
|
|
if(result)
|
|
return result;
|
|
}
|
|
|
|
timeout = ares_timeout(channel, &maxtime, &timebuf);
|
|
if(!timeout)
|
|
timeout = &maxtime;
|
|
milli = curlx_tvtoms(timeout);
|
|
Curl_expire(data, milli, EXPIRE_ASYNC_NAME);
|
|
return result;
|
|
}
|
|
|
|
/*
|
|
* Curl_ares_perform()
|
|
*
|
|
* 1) Ask ares what sockets it currently plays with, then
|
|
* 2) wait for the timeout period to check for action on ares' sockets.
|
|
* 3) tell ares to act on all the sockets marked as "with action"
|
|
*
|
|
* return number of sockets it worked on, or -1 on error
|
|
*/
|
|
int Curl_ares_perform(ares_channel channel,
|
|
timediff_t timeout_ms)
|
|
{
|
|
int nfds;
|
|
int bitmask;
|
|
ares_socket_t socks[ARES_GETSOCK_MAXNUM];
|
|
struct pollfd pfd[ARES_GETSOCK_MAXNUM];
|
|
int i;
|
|
int num = 0;
|
|
|
|
if(!channel)
|
|
return 0;
|
|
|
|
bitmask = ares_getsock(channel, socks, ARES_GETSOCK_MAXNUM);
|
|
|
|
for(i = 0; i < ARES_GETSOCK_MAXNUM; i++) {
|
|
pfd[i].events = 0;
|
|
pfd[i].revents = 0;
|
|
if(ARES_GETSOCK_READABLE(bitmask, i)) {
|
|
pfd[i].fd = socks[i];
|
|
pfd[i].events |= POLLRDNORM|POLLIN;
|
|
}
|
|
if(ARES_GETSOCK_WRITABLE(bitmask, i)) {
|
|
pfd[i].fd = socks[i];
|
|
pfd[i].events |= POLLWRNORM|POLLOUT;
|
|
}
|
|
if(pfd[i].events)
|
|
num++;
|
|
else
|
|
break;
|
|
}
|
|
|
|
if(num) {
|
|
nfds = Curl_poll(pfd, (unsigned int)num, timeout_ms);
|
|
if(nfds < 0)
|
|
return -1;
|
|
}
|
|
else
|
|
nfds = 0;
|
|
|
|
if(!nfds)
|
|
/* Call ares_process() unconditionally here, even if we simply timed out
|
|
above, as otherwise the ares name resolve will not timeout! */
|
|
ares_process_fd(channel, ARES_SOCKET_BAD, ARES_SOCKET_BAD);
|
|
else {
|
|
/* move through the descriptors and ask for processing on them */
|
|
for(i = 0; i < num; i++)
|
|
ares_process_fd(channel,
|
|
(pfd[i].revents & (POLLRDNORM|POLLIN)) ?
|
|
pfd[i].fd : ARES_SOCKET_BAD,
|
|
(pfd[i].revents & (POLLWRNORM|POLLOUT)) ?
|
|
pfd[i].fd : ARES_SOCKET_BAD);
|
|
}
|
|
return nfds;
|
|
}
|
|
|
|
#endif
|
|
|
|
#endif /* CURLRES_ASYNCH */
|
|
|
|
#ifdef USE_CURL_ASYNC
|
|
|
|
#include "doh.h"
|
|
|
|
void Curl_async_shutdown(struct Curl_easy *data)
|
|
{
|
|
#ifdef CURLRES_ARES
|
|
Curl_async_ares_shutdown(data);
|
|
#endif
|
|
#ifdef CURLRES_THREADED
|
|
Curl_async_thrdd_shutdown(data);
|
|
#endif
|
|
#ifndef CURL_DISABLE_DOH
|
|
Curl_doh_cleanup(data);
|
|
#endif
|
|
Curl_safefree(data->state.async.hostname);
|
|
}
|
|
|
|
void Curl_async_destroy(struct Curl_easy *data)
|
|
{
|
|
#ifdef CURLRES_ARES
|
|
Curl_async_ares_destroy(data);
|
|
#endif
|
|
#ifdef CURLRES_THREADED
|
|
Curl_async_thrdd_destroy(data);
|
|
#endif
|
|
#ifndef CURL_DISABLE_DOH
|
|
Curl_doh_cleanup(data);
|
|
#endif
|
|
Curl_safefree(data->state.async.hostname);
|
|
}
|
|
|
|
#endif /* USE_CURL_ASYNC */
|