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authorFabrice Bellard <fabrice@bellard.org>2002-07-04 10:35:45 +0000
committerFabrice Bellard <fabrice@bellard.org>2002-07-04 10:35:45 +0000
commit171bbb03adf53fd6209a91284342bb82ee7ad3f3 (patch)
treeedfac42f0fe5617d6d4132611ab4572d98f585f0 /libav/tcp.c
parentc13e1abdec3315945a0b24df67de8affca77ae8a (diff)
downloadffmpeg-171bbb03adf53fd6209a91284342bb82ee7ad3f3.tar.gz
added raw tcp support
Originally committed as revision 717 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libav/tcp.c')
-rw-r--r--libav/tcp.c152
1 files changed, 152 insertions, 0 deletions
diff --git a/libav/tcp.c b/libav/tcp.c
new file mode 100644
index 0000000000..644e139393
--- /dev/null
+++ b/libav/tcp.c
@@ -0,0 +1,152 @@
+/*
+ * 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,
+};