2002-07-04 10:35:45 +00:00
|
|
|
/*
|
|
|
|
* TCP protocol
|
2009-01-19 15:46:40 +00:00
|
|
|
* Copyright (c) 2002 Fabrice Bellard
|
2002-07-04 10:35:45 +00:00
|
|
|
*
|
2006-10-07 15:30:46 +00:00
|
|
|
* This file is part of FFmpeg.
|
|
|
|
*
|
|
|
|
* FFmpeg is free software; you can redistribute it and/or
|
2002-07-04 10:35:45 +00:00
|
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
|
|
* License as published by the Free Software Foundation; either
|
2006-10-07 15:30:46 +00:00
|
|
|
* version 2.1 of the License, or (at your option) any later version.
|
2002-07-04 10:35:45 +00:00
|
|
|
*
|
2006-10-07 15:30:46 +00:00
|
|
|
* FFmpeg is distributed in the hope that it will be useful,
|
2002-07-04 10:35:45 +00:00
|
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
|
|
* Lesser General Public License for more details.
|
|
|
|
*
|
|
|
|
* You should have received a copy of the GNU Lesser General Public
|
2006-10-07 15:30:46 +00:00
|
|
|
* License along with FFmpeg; if not, write to the Free Software
|
2006-01-12 22:43:26 +00:00
|
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
2002-07-04 10:35:45 +00:00
|
|
|
*/
|
|
|
|
#include "avformat.h"
|
2015-07-21 04:10:25 +00:00
|
|
|
#include "libavutil/avassert.h"
|
2011-03-04 00:41:22 +00:00
|
|
|
#include "libavutil/parseutils.h"
|
2012-09-13 00:43:31 +00:00
|
|
|
#include "libavutil/opt.h"
|
2013-03-12 14:25:59 +00:00
|
|
|
#include "libavutil/time.h"
|
2014-10-09 20:05:27 +00:00
|
|
|
|
2010-03-14 23:59:48 +00:00
|
|
|
#include "internal.h"
|
2007-02-04 17:05:44 +00:00
|
|
|
#include "network.h"
|
2007-11-21 16:33:06 +00:00
|
|
|
#include "os_support.h"
|
2011-04-04 18:40:38 +00:00
|
|
|
#include "url.h"
|
2011-01-28 02:12:21 +00:00
|
|
|
#if HAVE_POLL_H
|
|
|
|
#include <poll.h>
|
2008-09-26 02:12:37 +00:00
|
|
|
#endif
|
2002-07-04 10:35:45 +00:00
|
|
|
|
|
|
|
typedef struct TCPContext {
|
2012-09-13 00:43:31 +00:00
|
|
|
const AVClass *class;
|
2002-07-04 10:35:45 +00:00
|
|
|
int fd;
|
2012-09-13 00:43:31 +00:00
|
|
|
int listen;
|
2013-07-05 23:33:19 +00:00
|
|
|
int open_timeout;
|
2012-09-13 00:43:31 +00:00
|
|
|
int rw_timeout;
|
|
|
|
int listen_timeout;
|
2002-07-04 10:35:45 +00:00
|
|
|
} TCPContext;
|
|
|
|
|
2012-09-13 00:43:31 +00:00
|
|
|
#define OFFSET(x) offsetof(TCPContext, x)
|
|
|
|
#define D AV_OPT_FLAG_DECODING_PARAM
|
|
|
|
#define E AV_OPT_FLAG_ENCODING_PARAM
|
|
|
|
static const AVOption options[] = {
|
2015-07-21 04:11:10 +00:00
|
|
|
{ "listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 2, .flags = D|E },
|
2014-11-12 12:52:56 +00:00
|
|
|
{ "timeout", "set timeout (in microseconds) of socket I/O operations", OFFSET(rw_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
|
2015-02-28 22:20:39 +00:00
|
|
|
{ "listen_timeout", "Connection awaiting timeout (in milliseconds)", OFFSET(listen_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, -1, INT_MAX, .flags = D|E },
|
2014-10-09 20:05:27 +00:00
|
|
|
{ NULL }
|
2012-09-13 00:43:31 +00:00
|
|
|
};
|
|
|
|
|
2014-10-09 20:05:27 +00:00
|
|
|
static const AVClass tcp_class = {
|
2012-09-13 00:43:31 +00:00
|
|
|
.class_name = "tcp",
|
|
|
|
.item_name = av_default_item_name,
|
|
|
|
.option = options,
|
|
|
|
.version = LIBAVUTIL_VERSION_INT,
|
|
|
|
};
|
|
|
|
|
2002-07-04 10:35:45 +00:00
|
|
|
/* return non zero if error */
|
|
|
|
static int tcp_open(URLContext *h, const char *uri, int flags)
|
|
|
|
{
|
2011-06-06 12:13:02 +00:00
|
|
|
struct addrinfo hints = { 0 }, *ai, *cur_ai;
|
2002-07-04 10:35:45 +00:00
|
|
|
int port, fd = -1;
|
2011-12-01 09:44:21 +00:00
|
|
|
TCPContext *s = h->priv_data;
|
2011-03-04 00:41:22 +00:00
|
|
|
const char *p;
|
|
|
|
char buf[256];
|
2011-01-28 02:12:21 +00:00
|
|
|
int ret;
|
2008-08-24 16:22:40 +00:00
|
|
|
char hostname[1024],proto[1024],path[1024];
|
2010-01-11 17:32:40 +00:00
|
|
|
char portstr[10];
|
2013-07-05 23:33:19 +00:00
|
|
|
s->open_timeout = 5000000;
|
2004-08-12 00:09:32 +00:00
|
|
|
|
2010-06-27 14:16:46 +00:00
|
|
|
av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
|
2008-08-23 18:52:26 +00:00
|
|
|
&port, path, sizeof(path), uri);
|
2012-07-24 17:59:53 +00:00
|
|
|
if (strcmp(proto, "tcp"))
|
2008-08-23 18:49:16 +00:00
|
|
|
return AVERROR(EINVAL);
|
2012-07-24 17:59:53 +00:00
|
|
|
if (port <= 0 || port >= 65536) {
|
|
|
|
av_log(h, AV_LOG_ERROR, "Port missing in uri\n");
|
|
|
|
return AVERROR(EINVAL);
|
|
|
|
}
|
2011-03-04 00:41:22 +00:00
|
|
|
p = strchr(uri, '?');
|
|
|
|
if (p) {
|
2013-12-24 15:48:45 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "listen", p)) {
|
|
|
|
char *endptr = NULL;
|
|
|
|
s->listen = strtol(buf, &endptr, 10);
|
|
|
|
/* assume if no digits were found it is a request to enable it */
|
|
|
|
if (buf == endptr)
|
|
|
|
s->listen = 1;
|
|
|
|
}
|
2011-05-20 12:09:21 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) {
|
2012-09-13 00:43:31 +00:00
|
|
|
s->rw_timeout = strtol(buf, NULL, 10);
|
2011-05-20 12:09:21 +00:00
|
|
|
}
|
2012-07-04 15:48:10 +00:00
|
|
|
if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) {
|
2012-09-13 00:43:31 +00:00
|
|
|
s->listen_timeout = strtol(buf, NULL, 10);
|
2012-07-04 15:48:10 +00:00
|
|
|
}
|
2011-03-04 00:41:22 +00:00
|
|
|
}
|
2013-07-05 23:33:19 +00:00
|
|
|
if (s->rw_timeout >= 0) {
|
|
|
|
s->open_timeout =
|
|
|
|
h->rw_timeout = s->rw_timeout;
|
|
|
|
}
|
2010-01-27 22:31:13 +00:00
|
|
|
hints.ai_family = AF_UNSPEC;
|
2010-01-11 17:32:40 +00:00
|
|
|
hints.ai_socktype = SOCK_STREAM;
|
|
|
|
snprintf(portstr, sizeof(portstr), "%d", port);
|
2012-09-13 00:43:31 +00:00
|
|
|
if (s->listen)
|
2012-06-26 17:21:11 +00:00
|
|
|
hints.ai_flags |= AI_PASSIVE;
|
2012-06-26 17:22:21 +00:00
|
|
|
if (!hostname[0])
|
|
|
|
ret = getaddrinfo(NULL, portstr, &hints, &ai);
|
|
|
|
else
|
|
|
|
ret = getaddrinfo(hostname, portstr, &hints, &ai);
|
2010-08-14 20:34:51 +00:00
|
|
|
if (ret) {
|
2011-04-20 09:40:29 +00:00
|
|
|
av_log(h, AV_LOG_ERROR,
|
2010-08-14 20:34:51 +00:00
|
|
|
"Failed to resolve hostname %s: %s\n",
|
|
|
|
hostname, gai_strerror(ret));
|
2008-08-23 18:49:16 +00:00
|
|
|
return AVERROR(EIO);
|
2010-08-14 20:34:51 +00:00
|
|
|
}
|
2002-07-04 10:35:45 +00:00
|
|
|
|
2010-01-11 17:32:40 +00:00
|
|
|
cur_ai = ai;
|
|
|
|
|
|
|
|
restart:
|
2013-08-03 13:00:11 +00:00
|
|
|
fd = ff_socket(cur_ai->ai_family,
|
|
|
|
cur_ai->ai_socktype,
|
|
|
|
cur_ai->ai_protocol);
|
2013-05-29 23:08:51 +00:00
|
|
|
if (fd < 0) {
|
|
|
|
ret = ff_neterrno();
|
2010-01-11 17:32:40 +00:00
|
|
|
goto fail;
|
2013-05-29 23:08:51 +00:00
|
|
|
}
|
2005-12-17 18:14:38 +00:00
|
|
|
|
2015-07-21 04:11:10 +00:00
|
|
|
if (s->listen == 2) {
|
|
|
|
// multi-client
|
|
|
|
if ((ret = ff_listen(fd, cur_ai->ai_addr, cur_ai->ai_addrlen)) < 0)
|
|
|
|
goto fail1;
|
|
|
|
} else if (s->listen == 1) {
|
|
|
|
// single client
|
2015-09-11 06:31:44 +00:00
|
|
|
if ((ret = ff_listen_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
|
|
|
|
s->listen_timeout, h)) < 0)
|
2012-05-30 14:35:05 +00:00
|
|
|
goto fail1;
|
2015-09-11 06:31:44 +00:00
|
|
|
// Socket descriptor already closed here. Safe to overwrite to client one.
|
|
|
|
fd = ret;
|
2011-03-04 00:41:22 +00:00
|
|
|
} else {
|
2013-05-31 01:05:13 +00:00
|
|
|
if ((ret = ff_listen_connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
|
2013-08-25 17:44:40 +00:00
|
|
|
s->open_timeout / 1000, h, !!cur_ai->ai_next)) < 0) {
|
2011-03-04 00:41:22 +00:00
|
|
|
|
2013-05-31 01:05:13 +00:00
|
|
|
if (ret == AVERROR_EXIT)
|
2010-12-14 23:03:05 +00:00
|
|
|
goto fail1;
|
2013-05-31 01:05:13 +00:00
|
|
|
else
|
|
|
|
goto fail;
|
2010-08-14 20:34:51 +00:00
|
|
|
}
|
2003-07-17 10:28:27 +00:00
|
|
|
}
|
2013-05-31 01:05:13 +00:00
|
|
|
|
2008-08-23 18:46:30 +00:00
|
|
|
h->is_streamed = 1;
|
2002-07-04 10:35:45 +00:00
|
|
|
s->fd = fd;
|
2010-01-11 17:32:40 +00:00
|
|
|
freeaddrinfo(ai);
|
2002-07-04 10:35:45 +00:00
|
|
|
return 0;
|
|
|
|
|
|
|
|
fail:
|
2010-01-11 17:32:40 +00:00
|
|
|
if (cur_ai->ai_next) {
|
|
|
|
/* Retry with the next sockaddr */
|
|
|
|
cur_ai = cur_ai->ai_next;
|
|
|
|
if (fd >= 0)
|
|
|
|
closesocket(fd);
|
2013-05-29 23:08:51 +00:00
|
|
|
ret = 0;
|
2010-01-11 17:32:40 +00:00
|
|
|
goto restart;
|
|
|
|
}
|
2003-07-17 10:28:27 +00:00
|
|
|
fail1:
|
2002-07-04 10:35:45 +00:00
|
|
|
if (fd >= 0)
|
2007-01-18 17:22:30 +00:00
|
|
|
closesocket(fd);
|
2010-01-11 17:32:40 +00:00
|
|
|
freeaddrinfo(ai);
|
2003-07-17 10:28:27 +00:00
|
|
|
return ret;
|
2002-07-04 10:35:45 +00:00
|
|
|
}
|
|
|
|
|
2015-07-21 04:10:25 +00:00
|
|
|
static int tcp_accept(URLContext *s, URLContext **c)
|
|
|
|
{
|
|
|
|
TCPContext *sc = s->priv_data;
|
|
|
|
TCPContext *cc;
|
|
|
|
int ret;
|
|
|
|
av_assert0(sc->listen);
|
|
|
|
if ((ret = ffurl_alloc(c, s->filename, s->flags, &s->interrupt_callback)) < 0)
|
|
|
|
return ret;
|
|
|
|
cc = (*c)->priv_data;
|
|
|
|
ret = ff_accept(sc->fd, sc->listen_timeout, s);
|
|
|
|
if (ret < 0)
|
|
|
|
return ff_neterrno();
|
|
|
|
cc->fd = ret;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2003-02-11 16:35:48 +00:00
|
|
|
static int tcp_read(URLContext *h, uint8_t *buf, int size)
|
2002-07-04 10:35:45 +00:00
|
|
|
{
|
|
|
|
TCPContext *s = h->priv_data;
|
2011-02-04 18:12:38 +00:00
|
|
|
int ret;
|
2002-07-04 10:35:45 +00:00
|
|
|
|
2011-04-04 18:11:19 +00:00
|
|
|
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
|
2012-10-08 07:39:42 +00:00
|
|
|
ret = ff_network_wait_fd_timeout(s->fd, 0, h->rw_timeout, &h->interrupt_callback);
|
|
|
|
if (ret)
|
2011-02-02 17:45:44 +00:00
|
|
|
return ret;
|
2002-07-04 10:35:45 +00:00
|
|
|
}
|
2011-02-04 18:12:38 +00:00
|
|
|
ret = recv(s->fd, buf, size, 0);
|
|
|
|
return ret < 0 ? ff_neterrno() : ret;
|
2002-07-04 10:35:45 +00:00
|
|
|
}
|
|
|
|
|
2010-06-01 07:46:23 +00:00
|
|
|
static int tcp_write(URLContext *h, const uint8_t *buf, int size)
|
2002-07-04 10:35:45 +00:00
|
|
|
{
|
|
|
|
TCPContext *s = h->priv_data;
|
2011-02-04 18:12:38 +00:00
|
|
|
int ret;
|
2002-07-04 10:35:45 +00:00
|
|
|
|
2011-04-04 18:11:19 +00:00
|
|
|
if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
|
2012-10-08 07:39:42 +00:00
|
|
|
ret = ff_network_wait_fd_timeout(s->fd, 1, h->rw_timeout, &h->interrupt_callback);
|
|
|
|
if (ret)
|
2011-02-02 17:45:44 +00:00
|
|
|
return ret;
|
2002-07-04 10:35:45 +00:00
|
|
|
}
|
2014-08-20 20:06:07 +00:00
|
|
|
ret = send(s->fd, buf, size, MSG_NOSIGNAL);
|
2011-02-04 18:12:38 +00:00
|
|
|
return ret < 0 ? ff_neterrno() : ret;
|
2002-07-04 10:35:45 +00:00
|
|
|
}
|
|
|
|
|
2012-05-21 09:24:55 +00:00
|
|
|
static int tcp_shutdown(URLContext *h, int flags)
|
|
|
|
{
|
|
|
|
TCPContext *s = h->priv_data;
|
|
|
|
int how;
|
|
|
|
|
|
|
|
if (flags & AVIO_FLAG_WRITE && flags & AVIO_FLAG_READ) {
|
|
|
|
how = SHUT_RDWR;
|
|
|
|
} else if (flags & AVIO_FLAG_WRITE) {
|
|
|
|
how = SHUT_WR;
|
|
|
|
} else {
|
|
|
|
how = SHUT_RD;
|
|
|
|
}
|
|
|
|
|
|
|
|
return shutdown(s->fd, how);
|
|
|
|
}
|
|
|
|
|
2002-07-04 10:35:45 +00:00
|
|
|
static int tcp_close(URLContext *h)
|
|
|
|
{
|
|
|
|
TCPContext *s = h->priv_data;
|
2002-11-02 10:35:07 +00:00
|
|
|
closesocket(s->fd);
|
2002-07-04 10:35:45 +00:00
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
2009-03-03 17:04:51 +00:00
|
|
|
static int tcp_get_file_handle(URLContext *h)
|
|
|
|
{
|
|
|
|
TCPContext *s = h->priv_data;
|
|
|
|
return s->fd;
|
|
|
|
}
|
|
|
|
|
2011-01-25 22:03:28 +00:00
|
|
|
URLProtocol ff_tcp_protocol = {
|
2011-04-08 05:41:47 +00:00
|
|
|
.name = "tcp",
|
|
|
|
.url_open = tcp_open,
|
2015-07-21 04:10:25 +00:00
|
|
|
.url_accept = tcp_accept,
|
2011-04-08 05:41:47 +00:00
|
|
|
.url_read = tcp_read,
|
|
|
|
.url_write = tcp_write,
|
|
|
|
.url_close = tcp_close,
|
2009-03-03 17:04:51 +00:00
|
|
|
.url_get_file_handle = tcp_get_file_handle,
|
2012-05-21 09:24:55 +00:00
|
|
|
.url_shutdown = tcp_shutdown,
|
2011-12-01 09:44:21 +00:00
|
|
|
.priv_data_size = sizeof(TCPContext),
|
2011-12-30 09:38:05 +00:00
|
|
|
.flags = URL_PROTOCOL_FLAG_NETWORK,
|
2014-10-09 20:05:27 +00:00
|
|
|
.priv_data_class = &tcp_class,
|
2002-07-04 10:35:45 +00:00
|
|
|
};
|