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https://git.videolan.org/git/ffmpeg.git
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![Petr Doubek](/assets/img/avatar_default.png)
tested and submitted by (Torsten Spindler <spindler at hbt dot arch dot ethz dot ch>) Originally committed as revision 3381 to svn://svn.ffmpeg.org/ffmpeg/trunk
232 lines
5.8 KiB
C
232 lines
5.8 KiB
C
/*
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* TCP protocol
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* Copyright (c) 2002 Fabrice Bellard.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#include "avformat.h"
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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#if defined(__APPLE__) || defined(__BEOS__)
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typedef int socklen_t;
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#endif
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#ifndef __BEOS__
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# include <arpa/inet.h>
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#else
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# include "barpainet.h"
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#endif
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#include <netdb.h>
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#include <sys/time.h>
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#include <fcntl.h>
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typedef struct TCPContext {
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int fd;
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} TCPContext;
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/* resolve host with also IP address parsing */
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int resolve_host(struct in_addr *sin_addr, const char *hostname)
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{
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struct hostent *hp;
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if ((inet_aton(hostname, sin_addr)) == 0) {
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hp = gethostbyname(hostname);
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if (!hp)
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return -1;
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memcpy (sin_addr, hp->h_addr, sizeof(struct in_addr));
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}
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return 0;
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}
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/* return non zero if error */
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static int tcp_open(URLContext *h, const char *uri, int flags)
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{
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struct sockaddr_in dest_addr;
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char hostname[1024], *q;
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int port, fd = -1;
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TCPContext *s;
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const char *p;
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fd_set wfds;
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int fd_max, ret;
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struct timeval tv;
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socklen_t optlen;
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char proto[1024],path[1024],tmp[1024]; // PETR: protocol and path strings
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url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
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&port, path, sizeof(path), uri); // PETR: use url_split
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if (strcmp(proto,"tcp")) goto fail; // PETR: check protocol
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if ((q = strchr(hostname,'@'))) { strcpy(tmp,q+1); strcpy(hostname,tmp); } // PETR: take only the part after '@' for tcp protocol
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s = av_malloc(sizeof(TCPContext));
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if (!s)
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return -ENOMEM;
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h->priv_data = s;
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if (port <= 0 || port >= 65536)
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goto fail;
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dest_addr.sin_family = AF_INET;
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dest_addr.sin_port = htons(port);
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if (resolve_host(&dest_addr.sin_addr, hostname) < 0)
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goto fail;
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fd = socket(PF_INET, SOCK_STREAM, 0);
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if (fd < 0)
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goto fail;
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fcntl(fd, F_SETFL, O_NONBLOCK);
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redo:
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ret = connect(fd, (struct sockaddr *)&dest_addr,
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sizeof(dest_addr));
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if (ret < 0) {
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if (errno == EINTR)
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goto redo;
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if (errno != EINPROGRESS)
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goto fail;
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/* wait until we are connected or until abort */
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for(;;) {
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if (url_interrupt_cb()) {
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ret = -EINTR;
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goto fail1;
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}
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fd_max = fd;
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FD_ZERO(&wfds);
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FD_SET(fd, &wfds);
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000;
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ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
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if (ret > 0 && FD_ISSET(fd, &wfds))
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break;
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}
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/* test error */
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optlen = sizeof(ret);
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getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
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if (ret != 0)
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goto fail;
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}
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s->fd = fd;
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return 0;
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fail:
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ret = AVERROR_IO;
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fail1:
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if (fd >= 0)
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close(fd);
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av_free(s);
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return ret;
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}
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static int tcp_read(URLContext *h, uint8_t *buf, int size)
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{
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TCPContext *s = h->priv_data;
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int len, fd_max, ret;
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fd_set rfds;
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struct timeval tv;
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for (;;) {
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if (url_interrupt_cb())
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return -EINTR;
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fd_max = s->fd;
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FD_ZERO(&rfds);
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FD_SET(s->fd, &rfds);
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000;
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ret = select(fd_max + 1, &rfds, NULL, NULL, &tv);
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if (ret > 0 && FD_ISSET(s->fd, &rfds)) {
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#ifdef __BEOS__
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len = recv(s->fd, buf, size, 0);
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#else
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len = read(s->fd, buf, size);
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#endif
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if (len < 0) {
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if (errno != EINTR && errno != EAGAIN)
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#ifdef __BEOS__
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return errno;
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#else
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return -errno;
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#endif
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} else return len;
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} else if (ret < 0) {
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return -1;
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}
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}
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}
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static int tcp_write(URLContext *h, uint8_t *buf, int size)
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{
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TCPContext *s = h->priv_data;
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int ret, size1, fd_max, len;
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fd_set wfds;
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struct timeval tv;
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size1 = size;
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while (size > 0) {
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if (url_interrupt_cb())
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return -EINTR;
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fd_max = s->fd;
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FD_ZERO(&wfds);
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FD_SET(s->fd, &wfds);
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tv.tv_sec = 0;
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tv.tv_usec = 100 * 1000;
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ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
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if (ret > 0 && FD_ISSET(s->fd, &wfds)) {
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#ifdef __BEOS__
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len = send(s->fd, buf, size, 0);
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#else
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len = write(s->fd, buf, size);
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#endif
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if (len < 0) {
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if (errno != EINTR && errno != EAGAIN) {
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#ifdef __BEOS__
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return errno;
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#else
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return -errno;
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#endif
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}
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continue;
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}
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size -= len;
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buf += len;
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} else if (ret < 0) {
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return -1;
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}
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}
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return size1 - size;
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}
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static int tcp_close(URLContext *h)
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{
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TCPContext *s = h->priv_data;
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#ifdef CONFIG_BEOS_NETSERVER
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closesocket(s->fd);
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#else
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close(s->fd);
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#endif
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av_free(s);
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return 0;
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}
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URLProtocol tcp_protocol = {
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"tcp",
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tcp_open,
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tcp_read,
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tcp_write,
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NULL, /* seek */
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tcp_close,
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};
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