--- /dev/null
+/*
+ * 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 <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#if defined(__APPLE__) || defined(__BEOS__)
+typedef int socklen_t;
+#endif
+#ifndef __BEOS__
+# include <arpa/inet.h>
+#else
+# include "barpainet.h"
+#endif
+#include <netdb.h>
+#include <sys/time.h>
+#include <fcntl.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;
+ fd_set wfds;
+ int fd_max, ret;
+ struct timeval tv;
+ socklen_t optlen;
+
+ 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;
+ 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;
+ }
+
+ /* test error */
+ optlen = sizeof(ret);
+ getsockopt (fd, SOL_SOCKET, SO_ERROR, &ret, &optlen);
+ if (ret != 0)
+ goto fail;
+ }
+ s->fd = fd;
+ return 0;
+
+ fail:
+ ret = -EIO;
+ fail1:
+ if (fd >= 0)
+ close(fd);
+ av_free(s);
+ return ret;
+}
+
+static int tcp_read(URLContext *h, uint8_t *buf, int size)
+{
+ TCPContext *s = h->priv_data;
+ int size1, len, fd_max;
+ fd_set rfds;
+ struct timeval tv;
+
+ size1 = size;
+ while (size > 0) {
+ 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;
+ select(fd_max + 1, &rfds, NULL, NULL, &tv);
+#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
+ continue;
+ } else if (len == 0) {
+ break;
+ }
+ size -= len;
+ buf += len;
+ }
+ return size1 - size;
+}
+
+static int tcp_write(URLContext *h, uint8_t *buf, int size)
+{
+ TCPContext *s = h->priv_data;
+ int ret, size1, fd_max;
+ 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;
+ select(fd_max + 1, NULL, &wfds, NULL, &tv);
+#ifdef __BEOS__
+ ret = send(s->fd, buf, size, 0);
+#else
+ ret = write(s->fd, buf, size);
+#endif
+ if (ret < 0 && errno != EINTR && errno != EAGAIN)
+#ifdef __BEOS__
+ return errno;
+#else
+ return -errno;
+#endif
+ size -= ret;
+ buf += ret;
+ }
+ return size1 - size;
+}
+
+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,
+};
projects / synfig.git / blobdiff