2 * Copyright (C) <2005-2009> Wim Taymans <wim.taymans@gmail.com>
4 * This library is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU Library General Public
6 * License as published by the Free Software Foundation; either
7 * version 2 of the License, or (at your option) any later version.
9 * This library is distributed in the hope that it will be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 * Library General Public License for more details.
14 * You should have received a copy of the GNU Library General Public
15 * License along with this library; if not, write to the
16 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 * Boston, MA 02111-1307, USA.
20 * Unless otherwise indicated, Source Code is licensed under MIT license.
21 * See further explanation attached in License Statement (distributed in the file
24 * Permission is hereby granted, free of charge, to any person obtaining a copy of
25 * this software and associated documentation files (the "Software"), to deal in
26 * the Software without restriction, including without limitation the rights to
27 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
28 * of the Software, and to permit persons to whom the Software is furnished to do
29 * so, subject to the following conditions:
31 * The above copyright notice and this permission notice shall be included in all
32 * copies or substantial portions of the Software.
34 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
35 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
36 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
37 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
38 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
39 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
44 * SECTION:gstrtspconnection
45 * @short_description: manage RTSP connections
46 * @see_also: gstrtspurl
50 * This object manages the RTSP connection to the server. It provides function
51 * to receive and send bytes and messages.
55 * Last reviewed on 2007-07-24 (0.10.14)
72 /* we include this here to get the G_OS_* defines */
77 /* ws2_32.dll has getaddrinfo and freeaddrinfo on Windows XP and later.
78 * minwg32 headers check WINVER before allowing the use of these */
84 #define EINPROGRESS WSAEINPROGRESS
86 #include <sys/ioctl.h>
88 #include <sys/socket.h>
90 #include <netinet/in.h>
93 #ifdef HAVE_FIONREAD_IN_SYS_FILIO
94 #include <sys/filio.h>
97 #include "gstrtspconnection.h"
98 #include "gstrtspbase64.h"
103 struct sockaddr_in sa_in;
104 struct sockaddr_in6 sa_in6;
105 struct sockaddr_storage sa_stor;
112 guchar out[3]; /* the size must be evenly divisible by 3 */
117 static GstRTSPResult read_line (GstRTSPConnection * conn, guint8 * buffer,
118 guint * idx, guint size);
119 static GstRTSPResult parse_key_value (guint8 * buffer, gchar * key,
120 guint keysize, gchar ** value);
121 static void parse_string (gchar * dest, gint size, gchar ** src);
124 #define READ_SOCKET(fd, buf, len) recv (fd, (char *)buf, len, 0)
125 #define WRITE_SOCKET(fd, buf, len) send (fd, (const char *)buf, len, 0)
126 #define SETSOCKOPT(sock, level, name, val, len) setsockopt (sock, level, name, (const char *)val, len)
127 #define CLOSE_SOCKET(sock) closesocket (sock)
128 #define ERRNO_IS_EAGAIN (WSAGetLastError () == WSAEWOULDBLOCK)
129 #define ERRNO_IS_EINTR (WSAGetLastError () == WSAEINTR)
130 /* According to Microsoft's connect() documentation this one returns
131 * WSAEWOULDBLOCK and not WSAEINPROGRESS. */
132 #define ERRNO_IS_EINPROGRESS (WSAGetLastError () == WSAEWOULDBLOCK)
134 #define READ_SOCKET(fd, buf, len) read (fd, buf, len)
135 #define WRITE_SOCKET(fd, buf, len) write (fd, buf, len)
136 #define SETSOCKOPT(sock, level, name, val, len) setsockopt (sock, level, name, val, len)
137 #define CLOSE_SOCKET(sock) close (sock)
138 #define ERRNO_IS_EAGAIN (errno == EAGAIN)
139 #define ERRNO_IS_EINTR (errno == EINTR)
140 #define ERRNO_IS_EINPROGRESS (errno == EINPROGRESS)
143 #define ADD_POLLFD(fdset, pfd, fd) \
146 gst_poll_add_fd (fdset, pfd); \
149 #define REMOVE_POLLFD(fdset, pfd) \
151 if ((pfd)->fd != -1) { \
152 GST_DEBUG ("remove fd %d", (pfd)->fd); \
153 gst_poll_remove_fd (fdset, pfd); \
154 CLOSE_SOCKET ((pfd)->fd); \
164 TUNNEL_STATE_COMPLETE
165 } GstRTSPTunnelState;
167 #define TUNNELID_LEN 24
169 struct _GstRTSPConnection
172 /* URL for the connection */
175 /* connection state */
182 gchar tunnelid[TUNNELID_LEN];
184 GstRTSPTunnelState tstate;
189 gchar *initial_buffer;
190 gsize initial_buffer_offset;
193 gint cseq; /* sequence number */
194 gchar session_id[512]; /* session id */
195 gint timeout; /* session timeout in seconds */
196 GTimer *timer; /* timeout timer */
199 GstRTSPAuthMethod auth_method;
202 GHashTable *auth_params;
221 /* a structure for constructing RTSPMessages */
225 GstRTSPResult status;
235 build_reset (GstRTSPBuilder * builder)
237 g_free (builder->body_data);
238 memset (builder, 0, sizeof (GstRTSPBuilder));
242 * gst_rtsp_connection_create:
243 * @url: a #GstRTSPUrl
244 * @conn: storage for a #GstRTSPConnection
246 * Create a newly allocated #GstRTSPConnection from @url and store it in @conn.
247 * The connection will not yet attempt to connect to @url, use
248 * gst_rtsp_connection_connect().
250 * A copy of @url will be made.
252 * Returns: #GST_RTSP_OK when @conn contains a valid connection.
255 gst_rtsp_connection_create (const GstRTSPUrl * url, GstRTSPConnection ** conn)
257 GstRTSPConnection *newconn;
263 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
266 error = WSAStartup (0x0202, &w);
271 if (w.wVersion != 0x0202)
275 newconn = g_new0 (GstRTSPConnection, 1);
277 if ((newconn->fdset = gst_poll_new (TRUE)) == NULL)
280 newconn->url = gst_rtsp_url_copy (url);
281 newconn->fd0.fd = -1;
282 newconn->fd1.fd = -1;
283 newconn->timer = g_timer_new ();
284 newconn->timeout = 60;
287 newconn->auth_method = GST_RTSP_AUTH_NONE;
288 newconn->username = NULL;
289 newconn->passwd = NULL;
290 newconn->auth_params = NULL;
300 g_warning ("Error %d on WSAStartup", error);
301 return GST_RTSP_EWSASTART;
305 g_warning ("Windows sockets are not version 0x202 (current 0x%x)",
308 return GST_RTSP_EWSAVERSION;
317 return GST_RTSP_ESYS;
322 * gst_rtsp_connection_create_from_fd:
323 * @fd: a file descriptor
324 * @ip: the IP address of the other end
325 * @port: the port used by the other end
326 * @initial_buffer: data already read from @fd
327 * @conn: storage for a #GstRTSPConnection
329 * Create a new #GstRTSPConnection for handling communication on the existing
330 * file descriptor @fd. The @initial_buffer contains any data already read from
331 * @fd which should be used before starting to read new data.
333 * Returns: #GST_RTSP_OK when @conn contains a valid connection.
338 gst_rtsp_connection_create_from_fd (gint fd, const gchar * ip, guint16 port,
339 const gchar * initial_buffer, GstRTSPConnection ** conn)
341 GstRTSPConnection *newconn = NULL;
348 g_return_val_if_fail (fd >= 0, GST_RTSP_EINVAL);
349 g_return_val_if_fail (ip != NULL, GST_RTSP_EINVAL);
350 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
352 /* set to non-blocking mode so that we can cancel the communication */
354 fcntl (fd, F_SETFL, O_NONBLOCK);
356 ioctlsocket (fd, FIONBIO, &flags);
357 #endif /* G_OS_WIN32 */
359 /* create a url for the client address */
360 url = g_new0 (GstRTSPUrl, 1);
361 url->host = g_strdup (ip);
364 /* now create the connection object */
365 GST_RTSP_CHECK (gst_rtsp_connection_create (url, &newconn), newconn_failed);
366 gst_rtsp_url_free (url);
368 ADD_POLLFD (newconn->fdset, &newconn->fd0, fd);
370 /* both read and write initially */
371 newconn->readfd = &newconn->fd0;
372 newconn->writefd = &newconn->fd0;
374 newconn->ip = g_strdup (ip);
376 newconn->initial_buffer = g_strdup (initial_buffer);
385 gst_rtsp_url_free (url);
391 * gst_rtsp_connection_accept:
393 * @conn: storage for a #GstRTSPConnection
395 * Accept a new connection on @sock and create a new #GstRTSPConnection for
396 * handling communication on new socket.
398 * Returns: #GST_RTSP_OK when @conn contains a valid connection.
403 gst_rtsp_connection_accept (gint sock, GstRTSPConnection ** conn)
406 union gst_sockaddr sa;
407 socklen_t slen = sizeof (sa);
408 gchar ip[INET6_ADDRSTRLEN];
411 g_return_val_if_fail (sock >= 0, GST_RTSP_EINVAL);
412 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
414 memset (&sa, 0, slen);
417 fd = accept (sock, &sa.sa, &slen);
419 fd = accept (sock, &sa.sa, (gint *) & slen);
420 #endif /* G_OS_WIN32 */
424 if (getnameinfo (&sa.sa, slen, ip, sizeof (ip), NULL, 0, NI_NUMERICHOST) != 0)
425 goto getnameinfo_failed;
427 if (sa.sa.sa_family == AF_INET)
428 port = sa.sa_in.sin_port;
429 else if (sa.sa.sa_family == AF_INET6)
430 port = sa.sa_in6.sin6_port;
434 return gst_rtsp_connection_create_from_fd (fd, ip, port, NULL, conn);
439 return GST_RTSP_ESYS;
445 return GST_RTSP_ERROR;
450 do_resolve (const gchar * host)
452 static gchar ip[INET6_ADDRSTRLEN];
453 struct addrinfo *aires;
457 aierr = getaddrinfo (host, NULL, NULL, &aires);
461 for (ai = aires; ai; ai = ai->ai_next) {
462 if (ai->ai_family == AF_INET || ai->ai_family == AF_INET6) {
469 aierr = getnameinfo (ai->ai_addr, ai->ai_addrlen, ip, sizeof (ip), NULL, 0,
470 NI_NUMERICHOST | NI_NUMERICSERV);
474 freeaddrinfo (aires);
476 return g_strdup (ip);
481 GST_ERROR ("no addrinfo found for %s: %s", host, gai_strerror (aierr));
486 GST_ERROR ("no family found for %s", host);
487 freeaddrinfo (aires);
492 GST_ERROR ("no address found for %s: %s", host, gai_strerror (aierr));
493 freeaddrinfo (aires);
499 do_connect (const gchar * ip, guint16 port, GstPollFD * fdout,
500 GstPoll * fdset, GTimeVal * timeout)
503 struct addrinfo hints;
504 struct addrinfo *aires;
507 gchar service[NI_MAXSERV];
510 unsigned long flags = 1;
511 #endif /* G_OS_WIN32 */
515 memset (&hints, 0, sizeof hints);
516 hints.ai_flags = AI_NUMERICHOST;
517 hints.ai_family = AF_UNSPEC;
518 hints.ai_socktype = SOCK_STREAM;
519 g_snprintf (service, sizeof (service) - 1, "%hu", port);
520 service[sizeof (service) - 1] = '\0';
522 aierr = getaddrinfo (ip, service, &hints, &aires);
526 for (ai = aires; ai; ai = ai->ai_next) {
527 if (ai->ai_family == AF_INET || ai->ai_family == AF_INET6) {
534 fd = socket (ai->ai_family, SOCK_STREAM, 0);
538 /* set to non-blocking mode so that we can cancel the connect */
540 fcntl (fd, F_SETFL, O_NONBLOCK);
542 ioctlsocket (fd, FIONBIO, &flags);
543 #endif /* G_OS_WIN32 */
545 /* add the socket to our fdset */
546 ADD_POLLFD (fdset, fdout, fd);
548 /* we are going to connect ASYNC now */
549 ret = connect (fd, ai->ai_addr, ai->ai_addrlen);
552 if (!ERRNO_IS_EINPROGRESS)
555 /* wait for connect to complete up to the specified timeout or until we got
557 gst_poll_fd_ctl_write (fdset, fdout, TRUE);
559 to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
562 retval = gst_poll_wait (fdset, to);
563 } while (retval == -1 && (errno == EINTR || errno == EAGAIN));
567 else if (retval == -1)
570 /* we can still have an error connecting on windows */
571 if (gst_poll_fd_has_error (fdset, fdout)) {
572 socklen_t len = sizeof (errno);
574 getsockopt (fd, SOL_SOCKET, SO_ERROR, &errno, &len);
576 getsockopt (fd, SOL_SOCKET, SO_ERROR, (char *) &errno, &len);
581 gst_poll_fd_ignored (fdset, fdout);
584 freeaddrinfo (aires);
591 GST_ERROR ("no addrinfo found for %s: %s", ip, gai_strerror (aierr));
592 return GST_RTSP_ERROR;
596 GST_ERROR ("no family found for %s", ip);
597 freeaddrinfo (aires);
598 return GST_RTSP_ERROR;
602 GST_ERROR ("no socket %d (%s)", errno, g_strerror (errno));
603 freeaddrinfo (aires);
604 return GST_RTSP_ESYS;
608 GST_ERROR ("system error %d (%s)", errno, g_strerror (errno));
609 REMOVE_POLLFD (fdset, fdout);
610 freeaddrinfo (aires);
611 return GST_RTSP_ESYS;
615 GST_ERROR ("timeout");
616 REMOVE_POLLFD (fdset, fdout);
617 freeaddrinfo (aires);
618 return GST_RTSP_ETIMEOUT;
623 setup_tunneling (GstRTSPConnection * conn, GTimeVal * timeout)
631 gchar *ip, *url_port_str;
632 guint16 port, url_port;
633 gchar codestr[4], *resultstr;
638 /* create a random sessionid */
639 for (i = 0; i < TUNNELID_LEN; i++)
640 conn->tunnelid[i] = g_random_int_range ('a', 'z');
641 conn->tunnelid[TUNNELID_LEN - 1] = '\0';
644 /* get the port from the url */
645 gst_rtsp_url_get_port (url, &url_port);
647 if (conn->proxy_host) {
648 hostparam = g_strdup_printf ("Host: %s:%d\r\n", url->host, url_port);
649 url_port_str = g_strdup_printf (":%d", url_port);
650 ip = conn->proxy_host;
651 port = conn->proxy_port;
660 str = g_strdup_printf ("GET %s%s%s%s%s%s HTTP/1.0\r\n"
662 "x-sessioncookie: %s\r\n"
663 "Accept: application/x-rtsp-tunnelled\r\n"
664 "Pragma: no-cache\r\n"
665 "Cache-Control: no-cache\r\n" "\r\n",
666 conn->proxy_host ? "http://" : "",
667 conn->proxy_host ? url->host : "",
668 conn->proxy_host ? url_port_str : "",
669 url->abspath, url->query ? "?" : "", url->query ? url->query : "",
670 hostparam ? hostparam : "", conn->tunnelid);
672 /* we start by writing to this fd */
673 conn->writefd = &conn->fd0;
675 res = gst_rtsp_connection_write (conn, (guint8 *) str, strlen (str), timeout);
677 if (res != GST_RTSP_OK)
680 gst_poll_fd_ctl_write (conn->fdset, &conn->fd0, FALSE);
681 gst_poll_fd_ctl_read (conn->fdset, &conn->fd0, TRUE);
683 to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
691 res = read_line (conn, buffer, &idx, sizeof (buffer));
692 if (res == GST_RTSP_EEOF)
694 if (res == GST_RTSP_OK)
696 if (res != GST_RTSP_EINTR)
700 retval = gst_poll_wait (conn->fdset, to);
701 } while (retval == -1 && (errno == EINTR || errno == EAGAIN));
703 /* check for timeout */
715 /* check for last line */
716 if (buffer[0] == '\r')
718 if (buffer[0] == '\0')
722 /* first line, parse response */
723 gchar versionstr[20];
726 bptr = (gchar *) buffer;
728 parse_string (versionstr, sizeof (versionstr), &bptr);
729 parse_string (codestr, sizeof (codestr), &bptr);
730 code = atoi (codestr);
732 while (g_ascii_isspace (*bptr))
737 if (code != GST_RTSP_STS_OK)
743 /* other lines, parse key/value */
744 res = parse_key_value (buffer, key, sizeof (key), &value);
745 if (res == GST_RTSP_OK) {
746 /* we got a new ip address */
747 if (g_ascii_strcasecmp (key, "x-server-ip-address") == 0) {
748 if (conn->proxy_host) {
749 /* if we use a proxy we need to change the destination url */
751 url->host = g_strdup (value);
753 g_free (url_port_str);
755 g_strdup_printf ("Host: %s:%d\r\n", url->host, url_port);
756 url_port_str = g_strdup_printf (":%d", url_port);
758 /* and resolve the new ip address */
759 if (!(ip = do_resolve (conn->ip)))
770 /* connect to the host/port */
771 res = do_connect (ip, port, &conn->fd1, conn->fdset, timeout);
772 if (res != GST_RTSP_OK)
775 /* this is now our writing socket */
776 conn->writefd = &conn->fd1;
779 str = g_strdup_printf ("POST %s%s%s%s%s%s HTTP/1.0\r\n"
781 "x-sessioncookie: %s\r\n"
782 "Content-Type: application/x-rtsp-tunnelled\r\n"
783 "Pragma: no-cache\r\n"
784 "Cache-Control: no-cache\r\n"
785 "Content-Length: 32767\r\n"
786 "Expires: Sun, 9 Jan 1972 00:00:00 GMT\r\n"
788 conn->proxy_host ? "http://" : "",
789 conn->proxy_host ? url->host : "",
790 conn->proxy_host ? url_port_str : "",
791 url->abspath, url->query ? "?" : "", url->query ? url->query : "",
792 hostparam ? hostparam : "", conn->tunnelid);
794 res = gst_rtsp_connection_write (conn, (guint8 *) str, strlen (str), timeout);
796 if (res != GST_RTSP_OK)
801 g_free (url_port_str);
808 GST_ERROR ("write failed (%d)", res);
822 res = GST_RTSP_ETIMEOUT;
832 res = GST_RTSP_EINTR;
837 GST_ERROR ("got failure response %d %s", code, resultstr);
838 res = GST_RTSP_ERROR;
843 GST_ERROR ("could not resolve %s", conn->ip);
849 GST_ERROR ("failed to connect");
855 * gst_rtsp_connection_connect:
856 * @conn: a #GstRTSPConnection
857 * @timeout: a #GTimeVal timeout
859 * Attempt to connect to the url of @conn made with
860 * gst_rtsp_connection_create(). If @timeout is #NULL this function can block
861 * forever. If @timeout contains a valid timeout, this function will return
862 * #GST_RTSP_ETIMEOUT after the timeout expired.
864 * This function can be cancelled with gst_rtsp_connection_flush().
866 * Returns: #GST_RTSP_OK when a connection could be made.
869 gst_rtsp_connection_connect (GstRTSPConnection * conn, GTimeVal * timeout)
876 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
877 g_return_val_if_fail (conn->url != NULL, GST_RTSP_EINVAL);
878 g_return_val_if_fail (conn->fd0.fd < 0, GST_RTSP_EINVAL);
882 if (conn->proxy_host && conn->tunneled) {
883 if (!(ip = do_resolve (conn->proxy_host))) {
884 GST_ERROR ("could not resolve %s", conn->proxy_host);
887 port = conn->proxy_port;
888 g_free (conn->proxy_host);
889 conn->proxy_host = ip;
891 if (!(ip = do_resolve (url->host))) {
892 GST_ERROR ("could not resolve %s", url->host);
895 /* get the port from the url */
896 gst_rtsp_url_get_port (url, &port);
902 /* connect to the host/port */
903 res = do_connect (ip, port, &conn->fd0, conn->fdset, timeout);
904 if (res != GST_RTSP_OK)
907 /* this is our read URL */
908 conn->readfd = &conn->fd0;
910 if (conn->tunneled) {
911 res = setup_tunneling (conn, timeout);
912 if (res != GST_RTSP_OK)
913 goto tunneling_failed;
915 conn->writefd = &conn->fd0;
922 return GST_RTSP_ENET;
926 GST_ERROR ("failed to connect");
931 GST_ERROR ("failed to setup tunneling");
937 auth_digest_compute_hex_urp (const gchar * username,
938 const gchar * realm, const gchar * password, gchar hex_urp[33])
940 GChecksum *md5_context = g_checksum_new (G_CHECKSUM_MD5);
941 const gchar *digest_string;
943 g_checksum_update (md5_context, (const guchar *) username, strlen (username));
944 g_checksum_update (md5_context, (const guchar *) ":", 1);
945 g_checksum_update (md5_context, (const guchar *) realm, strlen (realm));
946 g_checksum_update (md5_context, (const guchar *) ":", 1);
947 g_checksum_update (md5_context, (const guchar *) password, strlen (password));
948 digest_string = g_checksum_get_string (md5_context);
950 memset (hex_urp, 0, 33);
951 memcpy (hex_urp, digest_string, strlen (digest_string));
953 g_checksum_free (md5_context);
957 auth_digest_compute_response (const gchar * method,
958 const gchar * uri, const gchar * hex_a1, const gchar * nonce,
961 char hex_a2[33] = { 0, };
962 GChecksum *md5_context = g_checksum_new (G_CHECKSUM_MD5);
963 const gchar *digest_string;
966 g_checksum_update (md5_context, (const guchar *) method, strlen (method));
967 g_checksum_update (md5_context, (const guchar *) ":", 1);
968 g_checksum_update (md5_context, (const guchar *) uri, strlen (uri));
969 digest_string = g_checksum_get_string (md5_context);
970 memcpy (hex_a2, digest_string, strlen (digest_string));
973 #if GLIB_CHECK_VERSION (2, 18, 0)
974 g_checksum_reset (md5_context);
976 g_checksum_free (md5_context);
977 md5_context = g_checksum_new (G_CHECKSUM_MD5);
979 g_checksum_update (md5_context, (const guchar *) hex_a1, strlen (hex_a1));
980 g_checksum_update (md5_context, (const guchar *) ":", 1);
981 g_checksum_update (md5_context, (const guchar *) nonce, strlen (nonce));
982 g_checksum_update (md5_context, (const guchar *) ":", 1);
984 g_checksum_update (md5_context, (const guchar *) hex_a2, 32);
985 digest_string = g_checksum_get_string (md5_context);
986 memset (response, 0, 33);
987 memcpy (response, digest_string, strlen (digest_string));
989 g_checksum_free (md5_context);
993 add_auth_header (GstRTSPConnection * conn, GstRTSPMessage * message)
995 switch (conn->auth_method) {
996 case GST_RTSP_AUTH_BASIC:{
1001 user_pass = g_strdup_printf ("%s:%s", conn->username, conn->passwd);
1002 user_pass64 = g_base64_encode ((guchar *) user_pass, strlen (user_pass));
1003 auth_string = g_strdup_printf ("Basic %s", user_pass64);
1005 gst_rtsp_message_take_header (message, GST_RTSP_HDR_AUTHORIZATION,
1009 g_free (user_pass64);
1012 case GST_RTSP_AUTH_DIGEST:{
1013 gchar response[33], hex_urp[33];
1014 gchar *auth_string, *auth_string2;
1019 const gchar *method;
1021 /* we need to have some params set */
1022 if (conn->auth_params == NULL)
1025 /* we need the realm and nonce */
1026 realm = (gchar *) g_hash_table_lookup (conn->auth_params, "realm");
1027 nonce = (gchar *) g_hash_table_lookup (conn->auth_params, "nonce");
1028 if (realm == NULL || nonce == NULL)
1031 auth_digest_compute_hex_urp (conn->username, realm, conn->passwd,
1034 method = gst_rtsp_method_as_text (message->type_data.request.method);
1035 uri = message->type_data.request.uri;
1037 /* Assume no qop, algorithm=md5, stale=false */
1038 /* For algorithm MD5, a1 = urp. */
1039 auth_digest_compute_response (method, uri, hex_urp, nonce, response);
1040 auth_string = g_strdup_printf ("Digest username=\"%s\", "
1041 "realm=\"%s\", nonce=\"%s\", uri=\"%s\", response=\"%s\"",
1042 conn->username, realm, nonce, uri, response);
1044 opaque = (gchar *) g_hash_table_lookup (conn->auth_params, "opaque");
1046 auth_string2 = g_strdup_printf ("%s, opaque=\"%s\"", auth_string,
1048 g_free (auth_string);
1049 auth_string = auth_string2;
1051 gst_rtsp_message_take_header (message, GST_RTSP_HDR_AUTHORIZATION,
1062 gen_date_string (gchar * date_string, guint len)
1066 #ifdef HAVE_GMTIME_R
1070 g_get_current_time (&tv);
1071 t = (time_t) tv.tv_sec;
1073 #ifdef HAVE_GMTIME_R
1074 strftime (date_string, len, "%a, %d %b %Y %H:%M:%S GMT", gmtime_r (&t, &tm_));
1076 strftime (date_string, len, "%a, %d %b %Y %H:%M:%S GMT", gmtime (&t));
1080 static GstRTSPResult
1081 write_bytes (gint fd, const guint8 * buffer, guint * idx, guint size)
1085 if (G_UNLIKELY (*idx > size))
1086 return GST_RTSP_ERROR;
1093 r = WRITE_SOCKET (fd, &buffer[*idx], left);
1094 if (G_UNLIKELY (r == 0)) {
1095 return GST_RTSP_EINTR;
1096 } else if (G_UNLIKELY (r < 0)) {
1097 if (ERRNO_IS_EAGAIN)
1098 return GST_RTSP_EINTR;
1099 if (!ERRNO_IS_EINTR)
1100 return GST_RTSP_ESYS;
1110 fill_raw_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size)
1114 if (G_UNLIKELY (conn->initial_buffer != NULL)) {
1115 gsize left = strlen (&conn->initial_buffer[conn->initial_buffer_offset]);
1117 out = MIN (left, size);
1118 memcpy (buffer, &conn->initial_buffer[conn->initial_buffer_offset], out);
1120 if (left == (gsize) out) {
1121 g_free (conn->initial_buffer);
1122 conn->initial_buffer = NULL;
1123 conn->initial_buffer_offset = 0;
1125 conn->initial_buffer_offset += out;
1128 if (G_LIKELY (size > (guint) out)) {
1131 r = READ_SOCKET (conn->readfd->fd, &buffer[out], size - out);
1143 fill_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size)
1145 DecodeCtx *ctx = conn->ctxp;
1150 guint8 in[sizeof (ctx->out) * 4 / 3];
1153 while (size > 0 && ctx->cout < ctx->coutl) {
1154 /* we have some leftover bytes */
1155 *buffer++ = ctx->out[ctx->cout++];
1160 /* got what we needed? */
1164 /* try to read more bytes */
1165 r = fill_raw_bytes (conn, in, sizeof (in));
1174 g_base64_decode_step ((gchar *) in, r, ctx->out, &ctx->state,
1178 out = fill_raw_bytes (conn, buffer, size);
1184 static GstRTSPResult
1185 read_bytes (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
1189 if (G_UNLIKELY (*idx > size))
1190 return GST_RTSP_ERROR;
1197 r = fill_bytes (conn, &buffer[*idx], left);
1198 if (G_UNLIKELY (r == 0)) {
1199 return GST_RTSP_EEOF;
1200 } else if (G_UNLIKELY (r < 0)) {
1201 if (ERRNO_IS_EAGAIN)
1202 return GST_RTSP_EINTR;
1203 if (!ERRNO_IS_EINTR)
1204 return GST_RTSP_ESYS;
1213 static GstRTSPResult
1214 read_line (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
1220 r = fill_bytes (conn, &c, 1);
1221 if (G_UNLIKELY (r == 0)) {
1222 return GST_RTSP_EEOF;
1223 } else if (G_UNLIKELY (r < 0)) {
1224 if (ERRNO_IS_EAGAIN)
1225 return GST_RTSP_EINTR;
1226 if (!ERRNO_IS_EINTR)
1227 return GST_RTSP_ESYS;
1229 if (c == '\n') /* end on \n */
1231 if (c == '\r') /* ignore \r */
1234 if (G_LIKELY (*idx < size - 1))
1235 buffer[(*idx)++] = c;
1238 buffer[*idx] = '\0';
1244 * gst_rtsp_connection_write:
1245 * @conn: a #GstRTSPConnection
1246 * @data: the data to write
1247 * @size: the size of @data
1248 * @timeout: a timeout value or #NULL
1250 * Attempt to write @size bytes of @data to the connected @conn, blocking up to
1251 * the specified @timeout. @timeout can be #NULL, in which case this function
1252 * might block forever.
1254 * This function can be cancelled with gst_rtsp_connection_flush().
1256 * Returns: #GST_RTSP_OK on success.
1259 gst_rtsp_connection_write (GstRTSPConnection * conn, const guint8 * data,
1260 guint size, GTimeVal * timeout)
1267 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
1268 g_return_val_if_fail (data != NULL || size == 0, GST_RTSP_EINVAL);
1269 g_return_val_if_fail (conn->writefd != NULL, GST_RTSP_EINVAL);
1271 gst_poll_set_controllable (conn->fdset, TRUE);
1272 gst_poll_fd_ctl_write (conn->fdset, conn->writefd, TRUE);
1273 gst_poll_fd_ctl_read (conn->fdset, conn->readfd, FALSE);
1274 /* clear all previous poll results */
1275 gst_poll_fd_ignored (conn->fdset, conn->writefd);
1276 gst_poll_fd_ignored (conn->fdset, conn->readfd);
1278 to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
1284 res = write_bytes (conn->writefd->fd, data, &offset, size);
1285 if (G_LIKELY (res == GST_RTSP_OK))
1287 if (G_UNLIKELY (res != GST_RTSP_EINTR))
1290 /* not all is written, wait until we can write more */
1292 retval = gst_poll_wait (conn->fdset, to);
1293 } while (retval == -1 && (errno == EINTR || errno == EAGAIN));
1295 if (G_UNLIKELY (retval == 0))
1298 if (G_UNLIKELY (retval == -1)) {
1310 return GST_RTSP_ETIMEOUT;
1314 return GST_RTSP_ESYS;
1318 return GST_RTSP_EINTR;
1327 message_to_string (GstRTSPConnection * conn, GstRTSPMessage * message)
1329 GString *str = NULL;
1331 str = g_string_new ("");
1333 switch (message->type) {
1334 case GST_RTSP_MESSAGE_REQUEST:
1335 /* create request string, add CSeq */
1336 g_string_append_printf (str, "%s %s RTSP/1.0\r\n"
1338 gst_rtsp_method_as_text (message->type_data.request.method),
1339 message->type_data.request.uri, conn->cseq++);
1340 /* add session id if we have one */
1341 if (conn->session_id[0] != '\0') {
1342 gst_rtsp_message_remove_header (message, GST_RTSP_HDR_SESSION, -1);
1343 gst_rtsp_message_add_header (message, GST_RTSP_HDR_SESSION,
1346 /* add any authentication headers */
1347 add_auth_header (conn, message);
1349 case GST_RTSP_MESSAGE_RESPONSE:
1350 /* create response string */
1351 g_string_append_printf (str, "RTSP/1.0 %d %s\r\n",
1352 message->type_data.response.code, message->type_data.response.reason);
1354 case GST_RTSP_MESSAGE_HTTP_REQUEST:
1355 /* create request string */
1356 g_string_append_printf (str, "%s %s HTTP/%s\r\n",
1357 gst_rtsp_method_as_text (message->type_data.request.method),
1358 message->type_data.request.uri,
1359 gst_rtsp_version_as_text (message->type_data.request.version));
1360 /* add any authentication headers */
1361 add_auth_header (conn, message);
1363 case GST_RTSP_MESSAGE_HTTP_RESPONSE:
1364 /* create response string */
1365 g_string_append_printf (str, "HTTP/%s %d %s\r\n",
1366 gst_rtsp_version_as_text (message->type_data.request.version),
1367 message->type_data.response.code, message->type_data.response.reason);
1369 case GST_RTSP_MESSAGE_DATA:
1371 guint8 data_header[4];
1373 /* prepare data header */
1374 data_header[0] = '$';
1375 data_header[1] = message->type_data.data.channel;
1376 data_header[2] = (message->body_size >> 8) & 0xff;
1377 data_header[3] = message->body_size & 0xff;
1379 /* create string with header and data */
1380 str = g_string_append_len (str, (gchar *) data_header, 4);
1382 g_string_append_len (str, (gchar *) message->body,
1383 message->body_size);
1387 g_string_free (str, TRUE);
1388 g_return_val_if_reached (NULL);
1392 /* append headers and body */
1393 if (message->type != GST_RTSP_MESSAGE_DATA) {
1394 gchar date_string[100];
1396 gen_date_string (date_string, sizeof (date_string));
1398 /* add date header */
1399 gst_rtsp_message_remove_header (message, GST_RTSP_HDR_DATE, -1);
1400 gst_rtsp_message_add_header (message, GST_RTSP_HDR_DATE, date_string);
1402 /* append headers */
1403 gst_rtsp_message_append_headers (message, str);
1405 /* append Content-Length and body if needed */
1406 if (message->body != NULL && message->body_size > 0) {
1409 len = g_strdup_printf ("%d", message->body_size);
1410 g_string_append_printf (str, "%s: %s\r\n",
1411 gst_rtsp_header_as_text (GST_RTSP_HDR_CONTENT_LENGTH), len);
1413 /* header ends here */
1414 g_string_append (str, "\r\n");
1416 g_string_append_len (str, (gchar *) message->body,
1417 message->body_size);
1419 /* just end headers */
1420 g_string_append (str, "\r\n");
1428 * gst_rtsp_connection_send:
1429 * @conn: a #GstRTSPConnection
1430 * @message: the message to send
1431 * @timeout: a timeout value or #NULL
1433 * Attempt to send @message to the connected @conn, blocking up to
1434 * the specified @timeout. @timeout can be #NULL, in which case this function
1435 * might block forever.
1437 * This function can be cancelled with gst_rtsp_connection_flush().
1439 * Returns: #GST_RTSP_OK on success.
1442 gst_rtsp_connection_send (GstRTSPConnection * conn, GstRTSPMessage * message,
1445 GString *string = NULL;
1450 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
1451 g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
1453 if (G_UNLIKELY (!(string = message_to_string (conn, message))))
1456 if (conn->tunneled) {
1457 str = g_base64_encode ((const guchar *) string->str, string->len);
1458 g_string_free (string, TRUE);
1463 g_string_free (string, FALSE);
1467 res = gst_rtsp_connection_write (conn, (guint8 *) str, len, timeout);
1475 g_warning ("Wrong message");
1476 return GST_RTSP_EINVAL;
1481 parse_string (gchar * dest, gint size, gchar ** src)
1487 while (g_ascii_isspace (**src))
1490 while (!g_ascii_isspace (**src) && **src != '\0') {
1492 dest[idx++] = **src;
1500 parse_key (gchar * dest, gint size, gchar ** src)
1505 while (**src != ':' && **src != '\0') {
1507 dest[idx++] = **src;
1514 static GstRTSPResult
1515 parse_protocol_version (gchar * protocol, GstRTSPMsgType * type,
1516 GstRTSPVersion * version)
1518 GstRTSPResult res = GST_RTSP_OK;
1521 if (G_LIKELY ((ver = strchr (protocol, '/')) != NULL)) {
1528 /* the version number must be formatted as X.Y with nothing following */
1529 if (sscanf (ver, "%u.%u%c", &major, &minor, &dummychar) != 2)
1530 res = GST_RTSP_EPARSE;
1532 if (g_ascii_strcasecmp (protocol, "RTSP") == 0) {
1533 if (major != 1 || minor != 0) {
1534 *version = GST_RTSP_VERSION_INVALID;
1535 res = GST_RTSP_ERROR;
1537 } else if (g_ascii_strcasecmp (protocol, "HTTP") == 0) {
1538 if (*type == GST_RTSP_MESSAGE_REQUEST)
1539 *type = GST_RTSP_MESSAGE_HTTP_REQUEST;
1540 else if (*type == GST_RTSP_MESSAGE_RESPONSE)
1541 *type = GST_RTSP_MESSAGE_HTTP_RESPONSE;
1543 if (major == 1 && minor == 1) {
1544 *version = GST_RTSP_VERSION_1_1;
1545 } else if (major != 1 || minor != 0) {
1546 *version = GST_RTSP_VERSION_INVALID;
1547 res = GST_RTSP_ERROR;
1550 res = GST_RTSP_EPARSE;
1552 res = GST_RTSP_EPARSE;
1557 static GstRTSPResult
1558 parse_response_status (guint8 * buffer, GstRTSPMessage * msg)
1560 GstRTSPResult res = GST_RTSP_OK;
1562 gchar versionstr[20];
1567 bptr = (gchar *) buffer;
1569 parse_string (versionstr, sizeof (versionstr), &bptr);
1571 parse_string (codestr, sizeof (codestr), &bptr);
1572 code = atoi (codestr);
1573 if (G_UNLIKELY (*codestr == '\0' || code < 0 || code >= 600))
1574 res = GST_RTSP_EPARSE;
1576 while (g_ascii_isspace (*bptr))
1579 if (G_UNLIKELY (gst_rtsp_message_init_response (msg, code, bptr,
1580 NULL) != GST_RTSP_OK))
1581 res = GST_RTSP_EPARSE;
1583 res2 = parse_protocol_version (versionstr, &msg->type,
1584 &msg->type_data.response.version);
1585 if (G_LIKELY (res == GST_RTSP_OK))
1591 static GstRTSPResult
1592 parse_request_line (guint8 * buffer, GstRTSPMessage * msg)
1594 GstRTSPResult res = GST_RTSP_OK;
1596 gchar versionstr[20];
1597 gchar methodstr[20];
1600 GstRTSPMethod method;
1602 bptr = (gchar *) buffer;
1604 parse_string (methodstr, sizeof (methodstr), &bptr);
1605 method = gst_rtsp_find_method (methodstr);
1607 parse_string (urlstr, sizeof (urlstr), &bptr);
1608 if (G_UNLIKELY (*urlstr == '\0'))
1609 res = GST_RTSP_EPARSE;
1611 parse_string (versionstr, sizeof (versionstr), &bptr);
1613 if (G_UNLIKELY (*bptr != '\0'))
1614 res = GST_RTSP_EPARSE;
1616 if (G_UNLIKELY (gst_rtsp_message_init_request (msg, method,
1617 urlstr) != GST_RTSP_OK))
1618 res = GST_RTSP_EPARSE;
1620 res2 = parse_protocol_version (versionstr, &msg->type,
1621 &msg->type_data.request.version);
1622 if (G_LIKELY (res == GST_RTSP_OK))
1625 if (G_LIKELY (msg->type == GST_RTSP_MESSAGE_REQUEST)) {
1626 /* GET and POST are not allowed as RTSP methods */
1627 if (msg->type_data.request.method == GST_RTSP_GET ||
1628 msg->type_data.request.method == GST_RTSP_POST) {
1629 msg->type_data.request.method = GST_RTSP_INVALID;
1630 if (res == GST_RTSP_OK)
1631 res = GST_RTSP_ERROR;
1633 } else if (msg->type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
1634 /* only GET and POST are allowed as HTTP methods */
1635 if (msg->type_data.request.method != GST_RTSP_GET &&
1636 msg->type_data.request.method != GST_RTSP_POST) {
1637 msg->type_data.request.method = GST_RTSP_INVALID;
1638 if (res == GST_RTSP_OK)
1639 res = GST_RTSP_ERROR;
1646 static GstRTSPResult
1647 parse_key_value (guint8 * buffer, gchar * key, guint keysize, gchar ** value)
1651 bptr = (gchar *) buffer;
1654 parse_key (key, keysize, &bptr);
1655 if (G_UNLIKELY (*bptr != ':'))
1659 while (g_ascii_isspace (*bptr))
1669 return GST_RTSP_EPARSE;
1673 /* parsing lines means reading a Key: Value pair */
1674 static GstRTSPResult
1675 parse_line (guint8 * buffer, GstRTSPMessage * msg)
1680 GstRTSPHeaderField field;
1682 res = parse_key_value (buffer, key, sizeof (key), &value);
1683 if (G_UNLIKELY (res != GST_RTSP_OK))
1686 field = gst_rtsp_find_header_field (key);
1687 if (field != GST_RTSP_HDR_INVALID)
1688 gst_rtsp_message_add_header (msg, field, value);
1700 * GST_RTSP_OK when a complete message was read.
1701 * GST_RTSP_EEOF: when the socket is closed
1702 * GST_RTSP_EINTR: when more data is needed.
1703 * GST_RTSP_..: some other error occured.
1705 static GstRTSPResult
1706 build_next (GstRTSPBuilder * builder, GstRTSPMessage * message,
1707 GstRTSPConnection * conn)
1712 switch (builder->state) {
1714 builder->offset = 0;
1716 read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 1);
1717 if (res != GST_RTSP_OK)
1720 /* we have 1 bytes now and we can see if this is a data message or
1722 if (builder->buffer[0] == '$') {
1723 /* data message, prepare for the header */
1724 builder->state = STATE_DATA_HEADER;
1727 builder->state = STATE_READ_LINES;
1730 case STATE_DATA_HEADER:
1733 read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 4);
1734 if (res != GST_RTSP_OK)
1737 gst_rtsp_message_init_data (message, builder->buffer[1]);
1739 builder->body_len = (builder->buffer[2] << 8) | builder->buffer[3];
1740 builder->body_data = g_malloc (builder->body_len + 1);
1741 builder->body_data[builder->body_len] = '\0';
1742 builder->offset = 0;
1743 builder->state = STATE_DATA_BODY;
1746 case STATE_DATA_BODY:
1749 read_bytes (conn, builder->body_data, &builder->offset,
1751 if (res != GST_RTSP_OK)
1754 /* we have the complete body now, store in the message adjusting the
1755 * length to include the traling '\0' */
1756 gst_rtsp_message_take_body (message,
1757 (guint8 *) builder->body_data, builder->body_len + 1);
1758 builder->body_data = NULL;
1759 builder->body_len = 0;
1761 builder->state = STATE_END;
1764 case STATE_READ_LINES:
1766 res = read_line (conn, builder->buffer, &builder->offset,
1767 sizeof (builder->buffer));
1768 if (res != GST_RTSP_OK)
1771 /* we have a regular response */
1772 if (builder->buffer[0] == '\r') {
1773 builder->buffer[0] = '\0';
1776 if (builder->buffer[0] == '\0') {
1779 /* empty line, end of message header */
1780 /* see if there is a Content-Length header */
1781 if (gst_rtsp_message_get_header (message,
1782 GST_RTSP_HDR_CONTENT_LENGTH, &hdrval, 0) == GST_RTSP_OK) {
1783 /* there is, prepare to read the body */
1784 builder->body_len = atol (hdrval);
1785 builder->body_data = g_malloc (builder->body_len + 1);
1786 builder->body_data[builder->body_len] = '\0';
1787 builder->offset = 0;
1788 builder->state = STATE_DATA_BODY;
1790 builder->state = STATE_END;
1795 /* we have a line */
1796 if (builder->line == 0) {
1797 /* first line, check for response status */
1798 if (memcmp (builder->buffer, "RTSP", 4) == 0 ||
1799 memcmp (builder->buffer, "HTTP", 4) == 0) {
1800 builder->status = parse_response_status (builder->buffer, message);
1802 builder->status = parse_request_line (builder->buffer, message);
1805 /* else just parse the line */
1806 res = parse_line (builder->buffer, message);
1807 if (res != GST_RTSP_OK)
1808 builder->status = res;
1811 builder->offset = 0;
1816 gchar *session_cookie;
1819 if (message->type == GST_RTSP_MESSAGE_DATA) {
1820 /* data messages don't have headers */
1825 /* save the tunnel session in the connection */
1826 if (message->type == GST_RTSP_MESSAGE_HTTP_REQUEST &&
1827 !conn->manual_http &&
1828 conn->tstate == TUNNEL_STATE_NONE &&
1829 gst_rtsp_message_get_header (message, GST_RTSP_HDR_X_SESSIONCOOKIE,
1830 &session_cookie, 0) == GST_RTSP_OK) {
1831 strncpy (conn->tunnelid, session_cookie, TUNNELID_LEN);
1832 conn->tunnelid[TUNNELID_LEN - 1] = '\0';
1833 conn->tunneled = TRUE;
1836 /* save session id in the connection for further use */
1837 if (message->type == GST_RTSP_MESSAGE_RESPONSE &&
1838 gst_rtsp_message_get_header (message, GST_RTSP_HDR_SESSION,
1839 &session_id, 0) == GST_RTSP_OK) {
1842 maxlen = sizeof (conn->session_id) - 1;
1843 /* the sessionid can have attributes marked with ;
1844 * Make sure we strip them */
1845 for (i = 0; session_id[i] != '\0'; i++) {
1846 if (session_id[i] == ';') {
1851 } while (g_ascii_isspace (session_id[i]));
1852 if (g_str_has_prefix (&session_id[i], "timeout=")) {
1855 /* if we parsed something valid, configure */
1856 if ((to = atoi (&session_id[i + 8])) > 0)
1863 /* make sure to not overflow */
1864 strncpy (conn->session_id, session_id, maxlen);
1865 conn->session_id[maxlen] = '\0';
1867 res = builder->status;
1871 res = GST_RTSP_ERROR;
1880 * gst_rtsp_connection_read:
1881 * @conn: a #GstRTSPConnection
1882 * @data: the data to read
1883 * @size: the size of @data
1884 * @timeout: a timeout value or #NULL
1886 * Attempt to read @size bytes into @data from the connected @conn, blocking up to
1887 * the specified @timeout. @timeout can be #NULL, in which case this function
1888 * might block forever.
1890 * This function can be cancelled with gst_rtsp_connection_flush().
1892 * Returns: #GST_RTSP_OK on success.
1895 gst_rtsp_connection_read (GstRTSPConnection * conn, guint8 * data, guint size,
1903 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
1904 g_return_val_if_fail (data != NULL, GST_RTSP_EINVAL);
1905 g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
1907 if (G_UNLIKELY (size == 0))
1912 /* configure timeout if any */
1913 to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
1915 gst_poll_set_controllable (conn->fdset, TRUE);
1916 gst_poll_fd_ctl_write (conn->fdset, conn->writefd, FALSE);
1917 gst_poll_fd_ctl_read (conn->fdset, conn->readfd, TRUE);
1920 res = read_bytes (conn, data, &offset, size);
1921 if (G_UNLIKELY (res == GST_RTSP_EEOF))
1923 if (G_LIKELY (res == GST_RTSP_OK))
1925 if (G_UNLIKELY (res != GST_RTSP_EINTR))
1929 retval = gst_poll_wait (conn->fdset, to);
1930 } while (retval == -1 && (errno == EINTR || errno == EAGAIN));
1932 /* check for timeout */
1933 if (G_UNLIKELY (retval == 0))
1934 goto select_timeout;
1936 if (G_UNLIKELY (retval == -1)) {
1942 gst_poll_set_controllable (conn->fdset, FALSE);
1949 return GST_RTSP_ESYS;
1953 return GST_RTSP_ETIMEOUT;
1957 return GST_RTSP_EINTR;
1961 return GST_RTSP_EEOF;
1970 gen_tunnel_reply (GstRTSPConnection * conn, GstRTSPStatusCode code)
1973 gchar date_string[100];
1974 const gchar *status;
1976 gen_date_string (date_string, sizeof (date_string));
1978 status = gst_rtsp_status_as_text (code);
1979 if (status == NULL) {
1980 code = GST_RTSP_STS_INTERNAL_SERVER_ERROR;
1981 status = "Internal Server Error";
1984 str = g_string_new ("");
1987 g_string_append_printf (str, "HTTP/1.0 %d %s\r\n", code, status);
1988 g_string_append_printf (str,
1989 "Server: GStreamer RTSP Server\r\n"
1991 "Connection: close\r\n"
1992 "Cache-Control: no-store\r\n" "Pragma: no-cache\r\n", date_string);
1993 if (code == GST_RTSP_STS_OK) {
1995 g_string_append_printf (str, "x-server-ip-address: %s\r\n", conn->ip);
1996 g_string_append_printf (str,
1997 "Content-Type: application/x-rtsp-tunnelled\r\n");
1999 g_string_append_printf (str, "\r\n");
2004 * gst_rtsp_connection_receive:
2005 * @conn: a #GstRTSPConnection
2006 * @message: the message to read
2007 * @timeout: a timeout value or #NULL
2009 * Attempt to read into @message from the connected @conn, blocking up to
2010 * the specified @timeout. @timeout can be #NULL, in which case this function
2011 * might block forever.
2013 * This function can be cancelled with gst_rtsp_connection_flush().
2015 * Returns: #GST_RTSP_OK on success.
2018 gst_rtsp_connection_receive (GstRTSPConnection * conn, GstRTSPMessage * message,
2022 GstRTSPBuilder builder;
2026 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2027 g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
2028 g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
2030 /* configure timeout if any */
2031 to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
2033 gst_poll_set_controllable (conn->fdset, TRUE);
2034 gst_poll_fd_ctl_write (conn->fdset, conn->writefd, FALSE);
2035 gst_poll_fd_ctl_read (conn->fdset, conn->readfd, TRUE);
2037 memset (&builder, 0, sizeof (GstRTSPBuilder));
2039 res = build_next (&builder, message, conn);
2040 if (G_UNLIKELY (res == GST_RTSP_EEOF))
2042 else if (G_LIKELY (res == GST_RTSP_OK)) {
2043 if (message->type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
2044 if (conn->tstate == TUNNEL_STATE_NONE &&
2045 message->type_data.request.method == GST_RTSP_GET) {
2048 conn->tstate = TUNNEL_STATE_GET;
2050 /* tunnel GET request, we can reply now */
2051 str = gen_tunnel_reply (conn, GST_RTSP_STS_OK);
2053 gst_rtsp_connection_write (conn, (guint8 *) str->str, str->len,
2055 g_string_free (str, TRUE);
2056 res = GST_RTSP_ETGET;
2058 } else if (conn->tstate == TUNNEL_STATE_NONE &&
2059 message->type_data.request.method == GST_RTSP_POST) {
2060 conn->tstate = TUNNEL_STATE_POST;
2062 /* tunnel POST request, the caller now has to link the two
2064 res = GST_RTSP_ETPOST;
2067 res = GST_RTSP_EPARSE;
2073 } else if (G_UNLIKELY (res != GST_RTSP_EINTR))
2077 retval = gst_poll_wait (conn->fdset, to);
2078 } while (retval == -1 && (errno == EINTR || errno == EAGAIN));
2080 /* check for timeout */
2081 if (G_UNLIKELY (retval == 0))
2082 goto select_timeout;
2084 if (G_UNLIKELY (retval == -1)) {
2090 gst_poll_set_controllable (conn->fdset, FALSE);
2093 /* we have a message here */
2094 build_reset (&builder);
2101 res = GST_RTSP_ESYS;
2106 res = GST_RTSP_ETIMEOUT;
2111 res = GST_RTSP_EINTR;
2116 res = GST_RTSP_EEOF;
2122 build_reset (&builder);
2123 gst_rtsp_message_unset (message);
2129 * gst_rtsp_connection_close:
2130 * @conn: a #GstRTSPConnection
2132 * Close the connected @conn. After this call, the connection is in the same
2133 * state as when it was first created.
2135 * Returns: #GST_RTSP_OK on success.
2138 gst_rtsp_connection_close (GstRTSPConnection * conn)
2140 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2145 g_free (conn->initial_buffer);
2146 conn->initial_buffer = NULL;
2147 conn->initial_buffer_offset = 0;
2149 REMOVE_POLLFD (conn->fdset, &conn->fd0);
2150 REMOVE_POLLFD (conn->fdset, &conn->fd1);
2151 conn->writefd = NULL;
2152 conn->readfd = NULL;
2153 conn->tunneled = FALSE;
2154 conn->tstate = TUNNEL_STATE_NONE;
2156 g_free (conn->username);
2157 conn->username = NULL;
2158 g_free (conn->passwd);
2159 conn->passwd = NULL;
2160 gst_rtsp_connection_clear_auth_params (conn);
2163 conn->session_id[0] = '\0';
2169 * gst_rtsp_connection_free:
2170 * @conn: a #GstRTSPConnection
2172 * Close and free @conn.
2174 * Returns: #GST_RTSP_OK on success.
2177 gst_rtsp_connection_free (GstRTSPConnection * conn)
2181 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2183 res = gst_rtsp_connection_close (conn);
2184 gst_poll_free (conn->fdset);
2185 g_timer_destroy (conn->timer);
2186 gst_rtsp_url_free (conn->url);
2187 g_free (conn->proxy_host);
2197 * gst_rtsp_connection_poll:
2198 * @conn: a #GstRTSPConnection
2199 * @events: a bitmask of #GstRTSPEvent flags to check
2200 * @revents: location for result flags
2201 * @timeout: a timeout
2203 * Wait up to the specified @timeout for the connection to become available for
2204 * at least one of the operations specified in @events. When the function returns
2205 * with #GST_RTSP_OK, @revents will contain a bitmask of available operations on
2208 * @timeout can be #NULL, in which case this function might block forever.
2210 * This function can be cancelled with gst_rtsp_connection_flush().
2212 * Returns: #GST_RTSP_OK on success.
2217 gst_rtsp_connection_poll (GstRTSPConnection * conn, GstRTSPEvent events,
2218 GstRTSPEvent * revents, GTimeVal * timeout)
2223 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2224 g_return_val_if_fail (events != 0, GST_RTSP_EINVAL);
2225 g_return_val_if_fail (revents != NULL, GST_RTSP_EINVAL);
2226 g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
2227 g_return_val_if_fail (conn->writefd != NULL, GST_RTSP_EINVAL);
2229 gst_poll_set_controllable (conn->fdset, TRUE);
2231 /* add fd to writer set when asked to */
2232 gst_poll_fd_ctl_write (conn->fdset, conn->writefd,
2233 events & GST_RTSP_EV_WRITE);
2235 /* add fd to reader set when asked to */
2236 gst_poll_fd_ctl_read (conn->fdset, conn->readfd, events & GST_RTSP_EV_READ);
2238 /* configure timeout if any */
2239 to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
2242 retval = gst_poll_wait (conn->fdset, to);
2243 } while (retval == -1 && (errno == EINTR || errno == EAGAIN));
2245 if (G_UNLIKELY (retval == 0))
2246 goto select_timeout;
2248 if (G_UNLIKELY (retval == -1)) {
2256 if (events & GST_RTSP_EV_READ) {
2257 if (gst_poll_fd_can_read (conn->fdset, conn->readfd))
2258 *revents |= GST_RTSP_EV_READ;
2260 if (events & GST_RTSP_EV_WRITE) {
2261 if (gst_poll_fd_can_write (conn->fdset, conn->writefd))
2262 *revents |= GST_RTSP_EV_WRITE;
2269 return GST_RTSP_ETIMEOUT;
2273 return GST_RTSP_ESYS;
2277 return GST_RTSP_EINTR;
2282 * gst_rtsp_connection_next_timeout:
2283 * @conn: a #GstRTSPConnection
2284 * @timeout: a timeout
2286 * Calculate the next timeout for @conn, storing the result in @timeout.
2288 * Returns: #GST_RTSP_OK.
2291 gst_rtsp_connection_next_timeout (GstRTSPConnection * conn, GTimeVal * timeout)
2297 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2298 g_return_val_if_fail (timeout != NULL, GST_RTSP_EINVAL);
2300 elapsed = g_timer_elapsed (conn->timer, &usec);
2301 if (elapsed >= conn->timeout) {
2305 sec = conn->timeout - elapsed;
2308 timeout->tv_sec = sec;
2309 timeout->tv_usec = usec;
2315 * gst_rtsp_connection_reset_timeout:
2316 * @conn: a #GstRTSPConnection
2318 * Reset the timeout of @conn.
2320 * Returns: #GST_RTSP_OK.
2323 gst_rtsp_connection_reset_timeout (GstRTSPConnection * conn)
2325 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2327 g_timer_start (conn->timer);
2333 * gst_rtsp_connection_flush:
2334 * @conn: a #GstRTSPConnection
2335 * @flush: start or stop the flush
2337 * Start or stop the flushing action on @conn. When flushing, all current
2338 * and future actions on @conn will return #GST_RTSP_EINTR until the connection
2339 * is set to non-flushing mode again.
2341 * Returns: #GST_RTSP_OK.
2344 gst_rtsp_connection_flush (GstRTSPConnection * conn, gboolean flush)
2346 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2348 gst_poll_set_flushing (conn->fdset, flush);
2354 * gst_rtsp_connection_set_proxy:
2355 * @conn: a #GstRTSPConnection
2356 * @host: the proxy host
2357 * @port: the proxy port
2359 * Set the proxy host and port.
2361 * Returns: #GST_RTSP_OK.
2366 gst_rtsp_connection_set_proxy (GstRTSPConnection * conn,
2367 const gchar * host, guint port)
2369 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2371 g_free (conn->proxy_host);
2372 conn->proxy_host = g_strdup (host);
2373 conn->proxy_port = port;
2379 * gst_rtsp_connection_set_auth:
2380 * @conn: a #GstRTSPConnection
2381 * @method: authentication method
2383 * @pass: the password
2385 * Configure @conn for authentication mode @method with @user and @pass as the
2386 * user and password respectively.
2388 * Returns: #GST_RTSP_OK.
2391 gst_rtsp_connection_set_auth (GstRTSPConnection * conn,
2392 GstRTSPAuthMethod method, const gchar * user, const gchar * pass)
2394 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2396 if (method == GST_RTSP_AUTH_DIGEST && ((user == NULL || pass == NULL)
2397 || g_strrstr (user, ":") != NULL))
2398 return GST_RTSP_EINVAL;
2400 /* Make sure the username and passwd are being set for authentication */
2401 if (method == GST_RTSP_AUTH_NONE && (user == NULL || pass == NULL))
2402 return GST_RTSP_EINVAL;
2404 /* ":" chars are not allowed in usernames for basic auth */
2405 if (method == GST_RTSP_AUTH_BASIC && g_strrstr (user, ":") != NULL)
2406 return GST_RTSP_EINVAL;
2408 g_free (conn->username);
2409 g_free (conn->passwd);
2411 conn->auth_method = method;
2412 conn->username = g_strdup (user);
2413 conn->passwd = g_strdup (pass);
2420 * @key: ASCII string to hash
2422 * Hashes @key in a case-insensitive manner.
2424 * Returns: the hash code.
2427 str_case_hash (gconstpointer key)
2429 const char *p = key;
2430 guint h = g_ascii_toupper (*p);
2433 for (p += 1; *p != '\0'; p++)
2434 h = (h << 5) - h + g_ascii_toupper (*p);
2441 * @v1: an ASCII string
2442 * @v2: another ASCII string
2444 * Compares @v1 and @v2 in a case-insensitive manner
2446 * Returns: %TRUE if they are equal (modulo case)
2449 str_case_equal (gconstpointer v1, gconstpointer v2)
2451 const char *string1 = v1;
2452 const char *string2 = v2;
2454 return g_ascii_strcasecmp (string1, string2) == 0;
2458 * gst_rtsp_connection_set_auth_param:
2459 * @conn: a #GstRTSPConnection
2460 * @param: authentication directive
2463 * Setup @conn with authentication directives. This is not necesary for
2464 * methods #GST_RTSP_AUTH_NONE and #GST_RTSP_AUTH_BASIC. For
2465 * #GST_RTSP_AUTH_DIGEST, directives should be taken from the digest challenge
2466 * in the WWW-Authenticate response header and can include realm, domain,
2467 * nonce, opaque, stale, algorithm, qop as per RFC2617.
2472 gst_rtsp_connection_set_auth_param (GstRTSPConnection * conn,
2473 const gchar * param, const gchar * value)
2475 g_return_if_fail (conn != NULL);
2476 g_return_if_fail (param != NULL);
2478 if (conn->auth_params == NULL) {
2480 g_hash_table_new_full (str_case_hash, str_case_equal, g_free, g_free);
2482 g_hash_table_insert (conn->auth_params, g_strdup (param), g_strdup (value));
2486 * gst_rtsp_connection_clear_auth_params:
2487 * @conn: a #GstRTSPConnection
2489 * Clear the list of authentication directives stored in @conn.
2494 gst_rtsp_connection_clear_auth_params (GstRTSPConnection * conn)
2496 g_return_if_fail (conn != NULL);
2498 if (conn->auth_params != NULL) {
2499 g_hash_table_destroy (conn->auth_params);
2500 conn->auth_params = NULL;
2504 static GstRTSPResult
2505 set_qos_dscp (gint fd, guint qos_dscp)
2507 union gst_sockaddr sa;
2508 socklen_t slen = sizeof (sa);
2515 if (getsockname (fd, &sa.sa, &slen) < 0)
2516 goto no_getsockname;
2518 af = sa.sa.sa_family;
2520 /* if this is an IPv4-mapped address then do IPv4 QoS */
2521 if (af == AF_INET6) {
2522 if (IN6_IS_ADDR_V4MAPPED (&sa.sa_in6.sin6_addr))
2526 /* extract and shift 6 bits of the DSCP */
2527 tos = (qos_dscp & 0x3f) << 2;
2531 if (SETSOCKOPT (fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos)) < 0)
2536 if (SETSOCKOPT (fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof (tos)) < 0)
2550 return GST_RTSP_ESYS;
2555 return GST_RTSP_ERROR;
2560 * gst_rtsp_connection_set_qos_dscp:
2561 * @conn: a #GstRTSPConnection
2562 * @qos_dscp: DSCP value
2564 * Configure @conn to use the specified DSCP value.
2566 * Returns: #GST_RTSP_OK on success.
2571 gst_rtsp_connection_set_qos_dscp (GstRTSPConnection * conn, guint qos_dscp)
2575 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2576 g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
2577 g_return_val_if_fail (conn->writefd != NULL, GST_RTSP_EINVAL);
2579 res = set_qos_dscp (conn->fd0.fd, qos_dscp);
2580 if (res == GST_RTSP_OK)
2581 res = set_qos_dscp (conn->fd1.fd, qos_dscp);
2588 * gst_rtsp_connection_get_url:
2589 * @conn: a #GstRTSPConnection
2591 * Retrieve the URL of the other end of @conn.
2593 * Returns: The URL. This value remains valid until the
2594 * connection is freed.
2599 gst_rtsp_connection_get_url (const GstRTSPConnection * conn)
2601 g_return_val_if_fail (conn != NULL, NULL);
2607 * gst_rtsp_connection_get_ip:
2608 * @conn: a #GstRTSPConnection
2610 * Retrieve the IP address of the other end of @conn.
2612 * Returns: The IP address as a string. this value remains valid until the
2613 * connection is closed.
2618 gst_rtsp_connection_get_ip (const GstRTSPConnection * conn)
2620 g_return_val_if_fail (conn != NULL, NULL);
2626 * gst_rtsp_connection_set_ip:
2627 * @conn: a #GstRTSPConnection
2628 * @ip: an ip address
2630 * Set the IP address of the server.
2635 gst_rtsp_connection_set_ip (GstRTSPConnection * conn, const gchar * ip)
2637 g_return_if_fail (conn != NULL);
2640 conn->ip = g_strdup (ip);
2644 * gst_rtsp_connection_get_readfd:
2645 * @conn: a #GstRTSPConnection
2647 * Get the file descriptor for reading.
2649 * Returns: the file descriptor used for reading or -1 on error. The file
2650 * descriptor remains valid until the connection is closed.
2655 gst_rtsp_connection_get_readfd (const GstRTSPConnection * conn)
2657 g_return_val_if_fail (conn != NULL, -1);
2658 g_return_val_if_fail (conn->readfd != NULL, -1);
2660 return conn->readfd->fd;
2664 * gst_rtsp_connection_get_writefd:
2665 * @conn: a #GstRTSPConnection
2667 * Get the file descriptor for writing.
2669 * Returns: the file descriptor used for writing or -1 on error. The file
2670 * descriptor remains valid until the connection is closed.
2675 gst_rtsp_connection_get_writefd (const GstRTSPConnection * conn)
2677 g_return_val_if_fail (conn != NULL, -1);
2678 g_return_val_if_fail (conn->writefd != NULL, -1);
2680 return conn->writefd->fd;
2685 * gst_rtsp_connection_set_tunneled:
2686 * @conn: a #GstRTSPConnection
2687 * @tunneled: the new state
2689 * Set the HTTP tunneling state of the connection. This must be configured before
2690 * the @conn is connected.
2695 gst_rtsp_connection_set_tunneled (GstRTSPConnection * conn, gboolean tunneled)
2697 g_return_if_fail (conn != NULL);
2698 g_return_if_fail (conn->readfd == NULL);
2699 g_return_if_fail (conn->writefd == NULL);
2701 conn->tunneled = tunneled;
2705 * gst_rtsp_connection_is_tunneled:
2706 * @conn: a #GstRTSPConnection
2708 * Get the tunneling state of the connection.
2710 * Returns: if @conn is using HTTP tunneling.
2715 gst_rtsp_connection_is_tunneled (const GstRTSPConnection * conn)
2717 g_return_val_if_fail (conn != NULL, FALSE);
2719 return conn->tunneled;
2723 * gst_rtsp_connection_get_tunnelid:
2724 * @conn: a #GstRTSPConnection
2726 * Get the tunnel session id the connection.
2728 * Returns: returns a non-empty string if @conn is being tunneled over HTTP.
2733 gst_rtsp_connection_get_tunnelid (const GstRTSPConnection * conn)
2735 g_return_val_if_fail (conn != NULL, NULL);
2737 if (!conn->tunneled)
2740 return conn->tunnelid;
2744 * gst_rtsp_connection_do_tunnel:
2745 * @conn: a #GstRTSPConnection
2746 * @conn2: a #GstRTSPConnection
2748 * If @conn received the first tunnel connection and @conn2 received
2749 * the second tunnel connection, link the two connections together so that
2750 * @conn manages the tunneled connection.
2752 * After this call, @conn2 cannot be used anymore and must be freed with
2753 * gst_rtsp_connection_free().
2755 * Returns: return GST_RTSP_OK on success.
2760 gst_rtsp_connection_do_tunnel (GstRTSPConnection * conn,
2761 GstRTSPConnection * conn2)
2763 g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
2764 g_return_val_if_fail (conn2 != NULL, GST_RTSP_EINVAL);
2765 g_return_val_if_fail (conn->tstate == TUNNEL_STATE_GET, GST_RTSP_EINVAL);
2766 g_return_val_if_fail (conn2->tstate == TUNNEL_STATE_POST, GST_RTSP_EINVAL);
2767 g_return_val_if_fail (!memcmp (conn2->tunnelid, conn->tunnelid, TUNNELID_LEN),
2770 /* both connections have fd0 as the read/write socket. start by taking the
2771 * socket from conn2 and set it as the socket in conn */
2772 conn->fd1 = conn2->fd0;
2774 /* clean up some of the state of conn2 */
2775 gst_poll_remove_fd (conn2->fdset, &conn2->fd0);
2777 conn2->readfd = conn2->writefd = NULL;
2779 /* We make fd0 the write socket and fd1 the read socket. */
2780 conn->writefd = &conn->fd0;
2781 conn->readfd = &conn->fd1;
2783 conn->tstate = TUNNEL_STATE_COMPLETE;
2785 /* we need base64 decoding for the readfd */
2786 conn->ctx.state = 0;
2789 conn->ctx.coutl = 0;
2790 conn->ctxp = &conn->ctx;
2795 #define READ_COND (G_IO_IN | G_IO_HUP | G_IO_ERR)
2796 #define WRITE_COND (G_IO_OUT | G_IO_ERR)
2805 /* async functions */
2806 struct _GstRTSPWatch
2810 GstRTSPConnection *conn;
2812 GstRTSPBuilder builder;
2813 GstRTSPMessage message;
2817 gboolean write_added;
2819 /* queued message for transmission */
2821 GAsyncQueue *messages;
2827 GstRTSPWatchFuncs funcs;
2830 GDestroyNotify notify;
2834 gst_rtsp_source_prepare (GSource * source, gint * timeout)
2836 GstRTSPWatch *watch = (GstRTSPWatch *) source;
2838 if (watch->conn->initial_buffer != NULL)
2841 *timeout = (watch->conn->timeout * 1000);
2847 gst_rtsp_source_check (GSource * source)
2849 GstRTSPWatch *watch = (GstRTSPWatch *) source;
2851 if (watch->readfd.revents & READ_COND)
2854 if (watch->writefd.revents & WRITE_COND)
2861 gst_rtsp_source_dispatch (GSource * source, GSourceFunc callback G_GNUC_UNUSED,
2862 gpointer user_data G_GNUC_UNUSED)
2864 GstRTSPWatch *watch = (GstRTSPWatch *) source;
2867 /* first read as much as we can */
2868 if (watch->readfd.revents & READ_COND || watch->conn->initial_buffer != NULL) {
2870 res = build_next (&watch->builder, &watch->message, watch->conn);
2871 if (res == GST_RTSP_EINTR)
2873 else if (G_UNLIKELY (res == GST_RTSP_EEOF))
2875 else if (G_LIKELY (res == GST_RTSP_OK)) {
2876 if (watch->message.type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
2877 if (watch->conn->tstate == TUNNEL_STATE_NONE &&
2878 watch->message.type_data.request.method == GST_RTSP_GET) {
2880 GstRTSPStatusCode code;
2883 watch->conn->tstate = TUNNEL_STATE_GET;
2885 if (watch->funcs.tunnel_start)
2886 code = watch->funcs.tunnel_start (watch, watch->user_data);
2888 code = GST_RTSP_STS_OK;
2890 /* queue the response string */
2891 str = gen_tunnel_reply (watch->conn, code);
2893 gst_rtsp_watch_queue_data (watch, (guint8 *) g_string_free (str,
2896 } else if (watch->conn->tstate == TUNNEL_STATE_NONE &&
2897 watch->message.type_data.request.method == GST_RTSP_POST) {
2898 watch->conn->tstate = TUNNEL_STATE_POST;
2900 /* in the callback the connection should be tunneled with the
2902 if (watch->funcs.tunnel_complete)
2903 watch->funcs.tunnel_complete (watch, watch->user_data);
2906 res = GST_RTSP_ERROR;
2911 if (G_LIKELY (res == GST_RTSP_OK)) {
2912 if (watch->funcs.message_received)
2913 watch->funcs.message_received (watch, &watch->message,
2919 gst_rtsp_message_unset (&watch->message);
2920 build_reset (&watch->builder);
2924 if (watch->writefd.revents & WRITE_COND) {
2926 if (watch->write_data == NULL) {
2929 /* get a new message from the queue */
2930 rec = g_async_queue_try_pop (watch->messages);
2934 watch->write_off = 0;
2935 watch->write_data = rec->data;
2936 watch->write_size = rec->size;
2937 watch->write_id = rec->id;
2939 g_slice_free (GstRTSPRec, rec);
2942 res = write_bytes (watch->writefd.fd, watch->write_data,
2943 &watch->write_off, watch->write_size);
2944 if (res == GST_RTSP_EINTR)
2946 if (G_UNLIKELY (res != GST_RTSP_OK))
2949 if (watch->funcs.message_sent)
2950 watch->funcs.message_sent (watch, watch->write_id, watch->user_data);
2953 if (g_async_queue_length (watch->messages) == 0 && watch->write_added) {
2954 g_source_remove_poll ((GSource *) watch, &watch->writefd);
2955 watch->write_added = FALSE;
2956 watch->writefd.revents = 0;
2958 g_free (watch->write_data);
2959 watch->write_data = NULL;
2968 if (watch->funcs.closed)
2969 watch->funcs.closed (watch, watch->user_data);
2974 if (watch->funcs.error)
2975 watch->funcs.error (watch, res, watch->user_data);
2981 gst_rtsp_rec_free (gpointer data)
2983 GstRTSPRec *rec = data;
2986 g_slice_free (GstRTSPRec, rec);
2990 gst_rtsp_source_finalize (GSource * source)
2992 GstRTSPWatch *watch = (GstRTSPWatch *) source;
2994 build_reset (&watch->builder);
2995 gst_rtsp_message_unset (&watch->message);
2997 g_async_queue_unref (watch->messages);
2998 watch->messages = NULL;
3000 g_free (watch->write_data);
3003 watch->notify (watch->user_data);
3006 static GSourceFuncs gst_rtsp_source_funcs = {
3007 gst_rtsp_source_prepare,
3008 gst_rtsp_source_check,
3009 gst_rtsp_source_dispatch,
3010 gst_rtsp_source_finalize,
3016 * gst_rtsp_watch_new:
3017 * @conn: a #GstRTSPConnection
3018 * @funcs: watch functions
3019 * @user_data: user data to pass to @funcs
3020 * @notify: notify when @user_data is not referenced anymore
3022 * Create a watch object for @conn. The functions provided in @funcs will be
3023 * called with @user_data when activity happened on the watch.
3025 * The new watch is usually created so that it can be attached to a
3026 * maincontext with gst_rtsp_watch_attach().
3028 * @conn must exist for the entire lifetime of the watch.
3030 * Returns: a #GstRTSPWatch that can be used for asynchronous RTSP
3031 * communication. Free with gst_rtsp_watch_unref () after usage.
3036 gst_rtsp_watch_new (GstRTSPConnection * conn,
3037 GstRTSPWatchFuncs * funcs, gpointer user_data, GDestroyNotify notify)
3039 GstRTSPWatch *result;
3041 g_return_val_if_fail (conn != NULL, NULL);
3042 g_return_val_if_fail (funcs != NULL, NULL);
3043 g_return_val_if_fail (conn->readfd != NULL, NULL);
3044 g_return_val_if_fail (conn->writefd != NULL, NULL);
3046 result = (GstRTSPWatch *) g_source_new (&gst_rtsp_source_funcs,
3047 sizeof (GstRTSPWatch));
3049 result->conn = conn;
3050 result->builder.state = STATE_START;
3052 result->messages = g_async_queue_new_full (gst_rtsp_rec_free);
3054 result->readfd.fd = -1;
3055 result->writefd.fd = -1;
3057 gst_rtsp_watch_reset (result);
3059 result->funcs = *funcs;
3060 result->user_data = user_data;
3061 result->notify = notify;
3063 /* only add the read fd, the write fd is only added when we have data
3065 g_source_add_poll ((GSource *) result, &result->readfd);
3071 * gst_rtsp_watch_reset:
3072 * @watch: a #GstRTSPWatch
3074 * Reset @watch, this is usually called after gst_rtsp_connection_do_tunnel()
3075 * when the file descriptors of the connection might have changed.
3080 gst_rtsp_watch_reset (GstRTSPWatch * watch)
3082 if (watch->readfd.fd != -1)
3083 g_source_remove_poll ((GSource *) watch, &watch->readfd);
3084 if (watch->writefd.fd != -1)
3085 g_source_remove_poll ((GSource *) watch, &watch->writefd);
3087 watch->readfd.fd = watch->conn->readfd->fd;
3088 watch->readfd.events = READ_COND;
3089 watch->readfd.revents = 0;
3091 watch->writefd.fd = watch->conn->writefd->fd;
3092 watch->writefd.events = WRITE_COND;
3093 watch->writefd.revents = 0;
3094 watch->write_added = FALSE;
3096 g_source_add_poll ((GSource *) watch, &watch->readfd);
3100 * gst_rtsp_watch_attach:
3101 * @watch: a #GstRTSPWatch
3102 * @context: a GMainContext (if NULL, the default context will be used)
3104 * Adds a #GstRTSPWatch to a context so that it will be executed within that context.
3106 * Returns: the ID (greater than 0) for the watch within the GMainContext.
3111 gst_rtsp_watch_attach (GstRTSPWatch * watch, GMainContext * context)
3113 g_return_val_if_fail (watch != NULL, 0);
3115 return g_source_attach ((GSource *) watch, context);
3119 * gst_rtsp_watch_unref:
3120 * @watch: a #GstRTSPWatch
3122 * Decreases the reference count of @watch by one. If the resulting reference
3123 * count is zero the watch and associated memory will be destroyed.
3128 gst_rtsp_watch_unref (GstRTSPWatch * watch)
3130 g_return_if_fail (watch != NULL);
3132 g_source_unref ((GSource *) watch);
3136 * gst_rtsp_watch_queue_data:
3137 * @watch: a #GstRTSPWatch
3138 * @data: the data to queue
3139 * @size: the size of @data
3141 * Queue @data for transmission in @watch. It will be transmitted when the
3142 * connection of the @watch becomes writable.
3144 * This function will take ownership of @data and g_free() it after use.
3146 * The return value of this function will be used as the id argument in the
3147 * message_sent callback.
3154 gst_rtsp_watch_queue_data (GstRTSPWatch * watch, const guint8 * data,
3159 g_return_val_if_fail (watch != NULL, GST_RTSP_EINVAL);
3160 g_return_val_if_fail (data != NULL, GST_RTSP_EINVAL);
3161 g_return_val_if_fail (size != 0, GST_RTSP_EINVAL);
3163 /* make a record with the data and id */
3164 rec = g_slice_new (GstRTSPRec);
3165 rec->data = (guint8 *) data;
3168 /* make sure rec->id is never 0 */
3169 rec->id = ++watch->id;
3170 } while (G_UNLIKELY (rec->id == 0));
3172 /* add the record to a queue. FIXME we would like to have an upper limit here */
3173 g_async_queue_push (watch->messages, rec);
3175 /* FIXME: does the following need to be made thread-safe? (this might be
3176 * called from a streaming thread, like appsink's render function) */
3177 /* make sure the main context will now also check for writability on the
3179 if (!watch->write_added) {
3180 g_source_add_poll ((GSource *) watch, &watch->writefd);
3181 watch->write_added = TRUE;
3188 * gst_rtsp_watch_queue_message:
3189 * @watch: a #GstRTSPWatch
3190 * @message: a #GstRTSPMessage
3192 * Queue a @message for transmission in @watch. The contents of this
3193 * message will be serialized and transmitted when the connection of the
3194 * @watch becomes writable.
3196 * The return value of this function will be used as the id argument in the
3197 * message_sent callback.
3204 gst_rtsp_watch_queue_message (GstRTSPWatch * watch, GstRTSPMessage * message)
3209 g_return_val_if_fail (watch != NULL, GST_RTSP_EINVAL);
3210 g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
3212 /* make a record with the message as a string and id */
3213 str = message_to_string (watch->conn, message);
3215 return gst_rtsp_watch_queue_data (watch,
3216 (guint8 *) g_string_free (str, FALSE), size);