/*
* TCP protocol
- * Copyright (c) 2002 Fabrice Bellard.
+ * Copyright (c) 2002 Fabrice Bellard
*
- * This library is free software; you can redistribute it and/or
+ * This file is part of Libav.
+ *
+ * Libav 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.
+ * version 2.1 of the License, or (at your option) any later version.
*
- * This library is distributed in the hope that it will be useful,
+ * Libav 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
+ * License along with Libav; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include "avformat.h"
-#include <unistd.h>
-#include <sys/types.h>
-#include <sys/socket.h>
-#include <netinet/in.h>
-#if defined(__BEOS__)
-typedef int socklen_t;
-#endif
-#ifndef __BEOS__
-# include <arpa/inet.h>
-#else
-# include "barpainet.h"
+#include "libavutil/parseutils.h"
+#include "libavutil/opt.h"
+
+#include "internal.h"
+#include "network.h"
+#include "os_support.h"
+#include "url.h"
+#if HAVE_POLL_H
+#include <poll.h>
#endif
-#include <netdb.h>
-#include <sys/time.h>
-#include <fcntl.h>
typedef struct TCPContext {
+ const AVClass *class;
int fd;
+ int listen;
+ int timeout;
+ int listen_timeout;
} TCPContext;
-/* resolve host with also IP address parsing */
-int resolve_host(struct in_addr *sin_addr, const char *hostname)
-{
- struct hostent *hp;
+#define OFFSET(x) offsetof(TCPContext, x)
+#define D AV_OPT_FLAG_DECODING_PARAM
+#define E AV_OPT_FLAG_ENCODING_PARAM
+static const AVOption options[] = {
+ { "listen", "Listen for incoming connections", OFFSET(listen), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, 1, .flags = D|E },
+ { "timeout", "Connection timeout (in milliseconds)", OFFSET(timeout), AV_OPT_TYPE_INT, { .i64 = 0 }, INT_MIN, INT_MAX, .flags = D|E },
+ { "listen_timeout", "Bind timeout (in milliseconds)", OFFSET(listen_timeout), AV_OPT_TYPE_INT, { .i64 = -1 }, INT_MIN, INT_MAX, .flags = D|E },
+ { NULL }
+};
- 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;
-}
+static const AVClass tcp_class = {
+ .class_name = "tcp",
+ .item_name = av_default_item_name,
+ .option = options,
+ .version = LIBAVUTIL_VERSION_INT,
+};
/* 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;
+ struct addrinfo hints = { 0 }, *ai, *cur_ai;
int port, fd = -1;
- TCPContext *s = NULL;
- fd_set wfds;
- int fd_max, ret;
- struct timeval tv;
- socklen_t optlen;
- char proto[1024],path[1024],tmp[1024]; // PETR: protocol and path strings
-
- url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
- &port, path, sizeof(path), uri); // PETR: use url_split
- if (strcmp(proto,"tcp")) goto fail; // PETR: check protocol
- if ((q = strchr(hostname,'@'))) { strcpy(tmp,q+1); strcpy(hostname,tmp); } // PETR: take only the part after '@' for tcp protocol
-
- s = av_malloc(sizeof(TCPContext));
- if (!s)
- return -ENOMEM;
- h->priv_data = s;
-
- if (port <= 0 || port >= 65536)
- goto fail;
+ TCPContext *s = h->priv_data;
+ const char *p;
+ char buf[256];
+ int ret;
+ char hostname[1024],proto[1024],path[1024];
+ char portstr[10];
+
+ av_url_split(proto, sizeof(proto), NULL, 0, hostname, sizeof(hostname),
+ &port, path, sizeof(path), uri);
+ if (strcmp(proto, "tcp"))
+ return AVERROR(EINVAL);
+ if (port <= 0 || port >= 65536) {
+ av_log(h, AV_LOG_ERROR, "Port missing in uri\n");
+ return AVERROR(EINVAL);
+ }
+ p = strchr(uri, '?');
+ if (p) {
+ if (av_find_info_tag(buf, sizeof(buf), "listen", p))
+ s->listen = 1;
+ if (av_find_info_tag(buf, sizeof(buf), "timeout", p)) {
+ s->timeout = strtol(buf, NULL, 10) * 100;
+ }
+ if (av_find_info_tag(buf, sizeof(buf), "listen_timeout", p)) {
+ s->listen_timeout = strtol(buf, NULL, 10);
+ }
+ }
+ if (!s->timeout)
+ s->timeout = h->rw_timeout ? h->rw_timeout / 1000 : 10000;
+ if (h->rw_timeout && s->listen_timeout < 0)
+ s->listen_timeout = h->rw_timeout / 1000;
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ snprintf(portstr, sizeof(portstr), "%d", port);
+ if (s->listen)
+ hints.ai_flags |= AI_PASSIVE;
+ if (!hostname[0])
+ ret = getaddrinfo(NULL, portstr, &hints, &ai);
+ else
+ ret = getaddrinfo(hostname, portstr, &hints, &ai);
+ if (ret) {
+ av_log(h, AV_LOG_ERROR,
+ "Failed to resolve hostname %s: %s\n",
+ hostname, gai_strerror(ret));
+ return AVERROR(EIO);
+ }
- dest_addr.sin_family = AF_INET;
- dest_addr.sin_port = htons(port);
- if (resolve_host(&dest_addr.sin_addr, hostname) < 0)
- goto fail;
+ cur_ai = ai;
- fd = socket(PF_INET, SOCK_STREAM, 0);
- if (fd < 0)
+ restart:
+ fd = ff_socket(cur_ai->ai_family,
+ cur_ai->ai_socktype,
+ cur_ai->ai_protocol);
+ if (fd < 0) {
+ ret = ff_neterrno();
goto fail;
- fcntl(fd, F_SETFL, O_NONBLOCK);
-
- redo:
- ret = connect(fd, (struct sockaddr *)&dest_addr,
- sizeof(dest_addr));
- if (ret < 0) {
- if (errno == EINTR)
- goto redo;
- if (errno != EINPROGRESS)
- goto fail;
-
- /* wait until we are connected or until abort */
- for(;;) {
- if (url_interrupt_cb()) {
- ret = -EINTR;
- goto fail1;
- }
- fd_max = fd;
- FD_ZERO(&wfds);
- FD_SET(fd, &wfds);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
- if (ret > 0 && FD_ISSET(fd, &wfds))
- break;
+ }
+
+ if (s->listen) {
+ if ((ret = ff_listen_bind(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
+ s->listen_timeout, h)) < 0) {
+ goto fail1;
}
+ fd = ret;
+ } else {
+ if ((ret = ff_listen_connect(fd, cur_ai->ai_addr, cur_ai->ai_addrlen,
+ s->timeout, h, !!cur_ai->ai_next)) < 0) {
- /* test error */
- optlen = sizeof(ret);
- getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
- if (ret != 0)
- goto fail;
+ if (ret == AVERROR_EXIT)
+ goto fail1;
+ else
+ goto fail;
+ }
}
+
+ h->is_streamed = 1;
s->fd = fd;
+ freeaddrinfo(ai);
return 0;
fail:
- ret = AVERROR_IO;
+ if (cur_ai->ai_next) {
+ /* Retry with the next sockaddr */
+ cur_ai = cur_ai->ai_next;
+ if (fd >= 0)
+ closesocket(fd);
+ ret = 0;
+ goto restart;
+ }
fail1:
if (fd >= 0)
- close(fd);
- av_free(s);
+ closesocket(fd);
+ freeaddrinfo(ai);
return ret;
}
static int tcp_read(URLContext *h, uint8_t *buf, int size)
{
TCPContext *s = h->priv_data;
- int len, fd_max, ret;
- fd_set rfds;
- struct timeval tv;
-
- for (;;) {
- if (url_interrupt_cb())
- return -EINTR;
- fd_max = s->fd;
- FD_ZERO(&rfds);
- FD_SET(s->fd, &rfds);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- ret = select(fd_max + 1, &rfds, NULL, NULL, &tv);
- if (ret > 0 && FD_ISSET(s->fd, &rfds)) {
-#ifdef __BEOS__
- len = recv(s->fd, buf, size, 0);
-#else
- len = read(s->fd, buf, size);
-#endif
- if (len < 0) {
- if (errno != EINTR && errno != EAGAIN)
-#ifdef __BEOS__
- return errno;
-#else
- return -errno;
-#endif
- } else return len;
- } else if (ret < 0) {
- return -1;
- }
+ int ret;
+
+ if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
+ ret = ff_network_wait_fd(s->fd, 0);
+ if (ret < 0)
+ return ret;
}
+ ret = recv(s->fd, buf, size, 0);
+ return ret < 0 ? ff_neterrno() : ret;
}
-static int tcp_write(URLContext *h, uint8_t *buf, int size)
+static int tcp_write(URLContext *h, const uint8_t *buf, int size)
{
TCPContext *s = h->priv_data;
- int ret, size1, fd_max, len;
- fd_set wfds;
- struct timeval tv;
-
- size1 = size;
- while (size > 0) {
- if (url_interrupt_cb())
- return -EINTR;
- fd_max = s->fd;
- FD_ZERO(&wfds);
- FD_SET(s->fd, &wfds);
- tv.tv_sec = 0;
- tv.tv_usec = 100 * 1000;
- ret = select(fd_max + 1, NULL, &wfds, NULL, &tv);
- if (ret > 0 && FD_ISSET(s->fd, &wfds)) {
-#ifdef __BEOS__
- len = send(s->fd, buf, size, 0);
-#else
- len = write(s->fd, buf, size);
-#endif
- if (len < 0) {
- if (errno != EINTR && errno != EAGAIN) {
-#ifdef __BEOS__
- return errno;
-#else
- return -errno;
-#endif
- }
- continue;
- }
- size -= len;
- buf += len;
- } else if (ret < 0) {
- return -1;
- }
+ int ret;
+
+ if (!(h->flags & AVIO_FLAG_NONBLOCK)) {
+ ret = ff_network_wait_fd(s->fd, 1);
+ if (ret < 0)
+ return ret;
}
- return size1 - size;
+ ret = send(s->fd, buf, size, MSG_NOSIGNAL);
+ return ret < 0 ? ff_neterrno() : ret;
+}
+
+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);
}
static int tcp_close(URLContext *h)
{
TCPContext *s = h->priv_data;
-#ifdef CONFIG_BEOS_NETSERVER
closesocket(s->fd);
-#else
- close(s->fd);
-#endif
- av_free(s);
return 0;
}
-URLProtocol tcp_protocol = {
- "tcp",
- tcp_open,
- tcp_read,
- tcp_write,
- NULL, /* seek */
- tcp_close,
+static int tcp_get_file_handle(URLContext *h)
+{
+ TCPContext *s = h->priv_data;
+ return s->fd;
+}
+
+const URLProtocol ff_tcp_protocol = {
+ .name = "tcp",
+ .url_open = tcp_open,
+ .url_read = tcp_read,
+ .url_write = tcp_write,
+ .url_close = tcp_close,
+ .url_get_file_handle = tcp_get_file_handle,
+ .url_shutdown = tcp_shutdown,
+ .priv_data_size = sizeof(TCPContext),
+ .flags = URL_PROTOCOL_FLAG_NETWORK,
+ .priv_data_class = &tcp_class,
};
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