mirror of
https://git.ffmpeg.org/ffmpeg.git
synced 2024-12-12 18:25:03 +00:00
171bbb03ad
Originally committed as revision 717 to svn://svn.ffmpeg.org/ffmpeg/trunk
153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
/*
|
|
* TCP protocol
|
|
* Copyright (c) 2002 Fabrice Bellard.
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* 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
|
|
* License along with this library; if not, write to the Free Software
|
|
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
*/
|
|
#include "avformat.h"
|
|
#include <unistd.h>
|
|
#include <ctype.h>
|
|
#include <sys/types.h>
|
|
#include <sys/socket.h>
|
|
#include <netinet/in.h>
|
|
#include <arpa/inet.h>
|
|
#include <netdb.h>
|
|
|
|
typedef struct TCPContext {
|
|
int fd;
|
|
} TCPContext;
|
|
|
|
/* resolve host with also IP address parsing */
|
|
int resolve_host(struct in_addr *sin_addr, const char *hostname)
|
|
{
|
|
struct hostent *hp;
|
|
|
|
if ((inet_aton(hostname, sin_addr)) == 0) {
|
|
hp = gethostbyname(hostname);
|
|
if (!hp)
|
|
return -1;
|
|
memcpy (sin_addr, hp->h_addr, sizeof(struct in_addr));
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* return non zero if error */
|
|
static int tcp_open(URLContext *h, const char *uri, int flags)
|
|
{
|
|
struct sockaddr_in dest_addr;
|
|
char hostname[1024], *q;
|
|
int port, fd = -1;
|
|
TCPContext *s;
|
|
const char *p;
|
|
|
|
s = av_malloc(sizeof(TCPContext));
|
|
if (!s)
|
|
return -ENOMEM;
|
|
h->priv_data = s;
|
|
p = uri;
|
|
if (!strstart(p, "tcp://", &p))
|
|
goto fail;
|
|
q = hostname;
|
|
while (*p != ':' && *p != '/' && *p != '\0') {
|
|
if ((q - hostname) < sizeof(hostname) - 1)
|
|
*q++ = *p;
|
|
p++;
|
|
}
|
|
*q = '\0';
|
|
if (*p != ':')
|
|
goto fail;
|
|
p++;
|
|
port = strtoul(p, (char **)&p, 10);
|
|
if (port <= 0 || port >= 65536)
|
|
goto fail;
|
|
|
|
dest_addr.sin_family = AF_INET;
|
|
dest_addr.sin_port = htons(port);
|
|
if (resolve_host(&dest_addr.sin_addr, hostname) < 0)
|
|
goto fail;
|
|
|
|
fd = socket(PF_INET, SOCK_STREAM, 0);
|
|
if (fd < 0)
|
|
goto fail;
|
|
|
|
if (connect(fd, (struct sockaddr *)&dest_addr,
|
|
sizeof(dest_addr)) < 0)
|
|
goto fail;
|
|
|
|
s->fd = fd;
|
|
return 0;
|
|
|
|
fail:
|
|
if (fd >= 0)
|
|
close(fd);
|
|
av_free(s);
|
|
return -EIO;
|
|
}
|
|
|
|
static int tcp_read(URLContext *h, UINT8 *buf, int size)
|
|
{
|
|
TCPContext *s = h->priv_data;
|
|
int size1, len;
|
|
|
|
size1 = size;
|
|
while (size > 0) {
|
|
len = read (s->fd, buf, size);
|
|
if (len < 0) {
|
|
if (errno != EINTR && errno != EAGAIN)
|
|
return -errno;
|
|
else
|
|
continue;
|
|
} else if (len == 0) {
|
|
break;
|
|
}
|
|
size -= len;
|
|
buf += len;
|
|
}
|
|
return size1 - size;
|
|
}
|
|
|
|
static int tcp_write(URLContext *h, UINT8 *buf, int size)
|
|
{
|
|
TCPContext *s = h->priv_data;
|
|
int ret, size1;
|
|
|
|
size1 = size;
|
|
while (size > 0) {
|
|
ret = write (s->fd, buf, size);
|
|
if (ret < 0 && errno != EINTR && errno != EAGAIN)
|
|
return -errno;
|
|
size -= ret;
|
|
buf += ret;
|
|
}
|
|
return size1 - size;
|
|
}
|
|
|
|
static int tcp_close(URLContext *h)
|
|
{
|
|
TCPContext *s = h->priv_data;
|
|
close(s->fd);
|
|
av_free(s);
|
|
return 0;
|
|
}
|
|
|
|
URLProtocol tcp_protocol = {
|
|
"tcp",
|
|
tcp_open,
|
|
tcp_read,
|
|
tcp_write,
|
|
NULL, /* seek */
|
|
tcp_close,
|
|
};
|