/* GStreamer
- * Copyright (C) <2005,2006> Wim Taymans <wim@fluendo.com>
+ * Copyright (C) <2005-2009> Wim Taymans <wim.taymans@gmail.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* @short_description: manage RTSP connections
* @see_also: gstrtspurl
*
- * <refsect2>
- * <para>
* This object manages the RTSP connection to the server. It provides function
* to receive and send bytes and messages.
- * </para>
- * </refsect2>
*
* Last reviewed on 2007-07-24 (0.10.14)
*/
#include <unistd.h>
#endif
-
/* we include this here to get the G_OS_* defines */
#include <glib.h>
#include <gst/gst.h>
#ifdef G_OS_WIN32
+/* ws2_32.dll has getaddrinfo and freeaddrinfo on Windows XP and later.
+ * minwg32 headers check WINVER before allowing the use of these */
+#ifndef WINVER
+#define WINVER 0x0501
+#endif
#include <winsock2.h>
#include <ws2tcpip.h>
#define EINPROGRESS WSAEINPROGRESS
#include <sys/ioctl.h>
#include <netdb.h>
#include <sys/socket.h>
-#include <netinet/in.h>
-#include <arpa/inet.h>
#include <fcntl.h>
+#include <netinet/in.h>
#endif
#ifdef HAVE_FIONREAD_IN_SYS_FILIO
#include "gstrtspconnection.h"
#include "gstrtspbase64.h"
-#include "md5.h"
+
+union gst_sockaddr
+{
+ struct sockaddr sa;
+ struct sockaddr_in sa_in;
+ struct sockaddr_in6 sa_in6;
+ struct sockaddr_storage sa_stor;
+};
+
+typedef struct
+{
+ gint state;
+ guint save;
+ guchar out[3]; /* the size must be evenly divisible by 3 */
+ guint cout;
+ guint coutl;
+} DecodeCtx;
+
+#ifdef MSG_NOSIGNAL
+#define SEND_FLAGS MSG_NOSIGNAL
+#else
+#define SEND_FLAGS 0
+#endif
#ifdef G_OS_WIN32
-#define FIONREAD_TYPE gulong
-#define IOCTL_SOCKET ioctlsocket
#define READ_SOCKET(fd, buf, len) recv (fd, (char *)buf, len, 0)
-#define WRITE_SOCKET(fd, buf, len) send (fd, (const char *)buf, len, 0)
+#define WRITE_SOCKET(fd, buf, len) send (fd, (const char *)buf, len, SEND_FLAGS)
#define SETSOCKOPT(sock, level, name, val, len) setsockopt (sock, level, name, (const char *)val, len)
#define CLOSE_SOCKET(sock) closesocket (sock)
-#define ERRNO_IS_NOT_EAGAIN (WSAGetLastError () != WSAEWOULDBLOCK)
-#define ERRNO_IS_NOT_EINTR (WSAGetLastError () != WSAEINTR)
+#define ERRNO_IS_EAGAIN (WSAGetLastError () == WSAEWOULDBLOCK)
+#define ERRNO_IS_EINTR (WSAGetLastError () == WSAEINTR)
/* According to Microsoft's connect() documentation this one returns
* WSAEWOULDBLOCK and not WSAEINPROGRESS. */
-#define ERRNO_IS_NOT_EINPROGRESS (WSAGetLastError () != WSAEWOULDBLOCK)
+#define ERRNO_IS_EINPROGRESS (WSAGetLastError () == WSAEWOULDBLOCK)
#else
-#define FIONREAD_TYPE gint
-#define IOCTL_SOCKET ioctl
#define READ_SOCKET(fd, buf, len) read (fd, buf, len)
-#define WRITE_SOCKET(fd, buf, len) write (fd, buf, len)
+#define WRITE_SOCKET(fd, buf, len) send (fd, buf, len, SEND_FLAGS)
#define SETSOCKOPT(sock, level, name, val, len) setsockopt (sock, level, name, val, len)
#define CLOSE_SOCKET(sock) close (sock)
-#define ERRNO_IS_NOT_EAGAIN (errno != EAGAIN)
-#define ERRNO_IS_NOT_EINTR (errno != EINTR)
-#define ERRNO_IS_NOT_EINPROGRESS (errno != EINPROGRESS)
+#define ERRNO_IS_EAGAIN (errno == EAGAIN)
+#define ERRNO_IS_EINTR (errno == EINTR)
+#define ERRNO_IS_EINPROGRESS (errno == EINPROGRESS)
#endif
-#ifdef G_OS_WIN32
-static int
-inet_aton (const char *c, struct in_addr *paddr)
+#define ADD_POLLFD(fdset, pfd, fd) \
+G_STMT_START { \
+ (pfd)->fd = fd; \
+ gst_poll_add_fd (fdset, pfd); \
+} G_STMT_END
+
+#define REMOVE_POLLFD(fdset, pfd) \
+G_STMT_START { \
+ if ((pfd)->fd != -1) { \
+ GST_DEBUG ("remove fd %d", (pfd)->fd); \
+ gst_poll_remove_fd (fdset, pfd); \
+ CLOSE_SOCKET ((pfd)->fd); \
+ (pfd)->fd = -1; \
+ } \
+} G_STMT_END
+
+typedef enum
+{
+ TUNNEL_STATE_NONE,
+ TUNNEL_STATE_GET,
+ TUNNEL_STATE_POST,
+ TUNNEL_STATE_COMPLETE
+} GstRTSPTunnelState;
+
+#define TUNNELID_LEN 24
+
+struct _GstRTSPConnection
+{
+ /*< private > */
+ /* URL for the connection */
+ GstRTSPUrl *url;
+
+ /* connection state */
+ GstPollFD fd0;
+ GstPollFD fd1;
+
+ GstPollFD *readfd;
+ GstPollFD *writefd;
+
+ gboolean manual_http;
+
+ gchar tunnelid[TUNNELID_LEN];
+ gboolean tunneled;
+ GstRTSPTunnelState tstate;
+
+ GstPoll *fdset;
+ gchar *ip;
+
+ gint read_ahead;
+
+ gchar *initial_buffer;
+ gsize initial_buffer_offset;
+
+ /* Session state */
+ gint cseq; /* sequence number */
+ gchar session_id[512]; /* session id */
+ gint timeout; /* session timeout in seconds */
+ GTimer *timer; /* timeout timer */
+
+ /* Authentication */
+ GstRTSPAuthMethod auth_method;
+ gchar *username;
+ gchar *passwd;
+ GHashTable *auth_params;
+
+ DecodeCtx ctx;
+ DecodeCtx *ctxp;
+
+ gchar *proxy_host;
+ guint proxy_port;
+};
+
+enum
+{
+ STATE_START = 0,
+ STATE_DATA_HEADER,
+ STATE_DATA_BODY,
+ STATE_READ_LINES,
+ STATE_END,
+ STATE_LAST
+};
+
+enum
+{
+ READ_AHEAD_EOH = -1, /* end of headers */
+ READ_AHEAD_CRLF = -2,
+ READ_AHEAD_CRLFCR = -3
+};
+
+/* a structure for constructing RTSPMessages */
+typedef struct
{
- /* note that inet_addr is deprecated on unix because
- * inet_addr returns -1 (INADDR_NONE) for the valid 255.255.255.255
- * address. */
- paddr->s_addr = inet_addr (c);
+ gint state;
+ GstRTSPResult status;
+ guint8 buffer[4096];
+ guint offset;
- if (paddr->s_addr == INADDR_NONE)
- return 0;
+ guint line;
+ guint8 *body_data;
+ glong body_len;
+} GstRTSPBuilder;
- return 1;
+static void
+build_reset (GstRTSPBuilder * builder)
+{
+ g_free (builder->body_data);
+ memset (builder, 0, sizeof (GstRTSPBuilder));
}
-#endif
/**
* gst_rtsp_connection_create:
* @url: a #GstRTSPUrl
- * @conn: a #GstRTSPConnection
+ * @conn: storage for a #GstRTSPConnection
*
* Create a newly allocated #GstRTSPConnection from @url and store it in @conn.
* The connection will not yet attempt to connect to @url, use
* gst_rtsp_connection_connect().
*
+ * A copy of @url will be made.
+ *
* Returns: #GST_RTSP_OK when @conn contains a valid connection.
*/
GstRTSPResult
-gst_rtsp_connection_create (GstRTSPUrl * url, GstRTSPConnection ** conn)
+gst_rtsp_connection_create (const GstRTSPUrl * url, GstRTSPConnection ** conn)
{
GstRTSPConnection *newconn;
+#ifdef G_OS_WIN32
+ WSADATA w;
+ int error;
+#endif
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+#ifdef G_OS_WIN32
+ error = WSAStartup (0x0202, &w);
+
+ if (error)
+ goto startup_error;
+
+ if (w.wVersion != 0x0202)
+ goto version_error;
+#endif
+
newconn = g_new0 (GstRTSPConnection, 1);
if ((newconn->fdset = gst_poll_new (TRUE)) == NULL)
goto no_fdset;
- newconn->url = url;
- newconn->fd.fd = -1;
+ newconn->url = gst_rtsp_url_copy (url);
+ newconn->fd0.fd = -1;
+ newconn->fd1.fd = -1;
newconn->timer = g_timer_new ();
+ newconn->timeout = 60;
+ newconn->cseq = 1;
newconn->auth_method = GST_RTSP_AUTH_NONE;
newconn->username = NULL;
return GST_RTSP_OK;
/* ERRORS */
+#ifdef G_OS_WIN32
+startup_error:
+ {
+ g_warning ("Error %d on WSAStartup", error);
+ return GST_RTSP_EWSASTART;
+ }
+version_error:
+ {
+ g_warning ("Windows sockets are not version 0x202 (current 0x%x)",
+ w.wVersion);
+ WSACleanup ();
+ return GST_RTSP_EWSAVERSION;
+ }
+#endif
no_fdset:
{
g_free (newconn);
+#ifdef G_OS_WIN32
+ WSACleanup ();
+#endif
return GST_RTSP_ESYS;
}
}
/**
- * gst_rtsp_connection_connect:
- * @conn: a #GstRTSPConnection
- * @timeout: a #GTimeVal timeout
+ * gst_rtsp_connection_create_from_fd:
+ * @fd: a file descriptor
+ * @ip: the IP address of the other end
+ * @port: the port used by the other end
+ * @initial_buffer: data already read from @fd
+ * @conn: storage for a #GstRTSPConnection
*
- * Attempt to connect to the url of @conn made with
- * gst_rtsp_connection_create(). If @timeout is #NULL this function can block
- * forever. If @timeout contains a valid timeout, this function will return
- * #GST_RTSP_ETIMEOUT after the timeout expired.
+ * Create a new #GstRTSPConnection for handling communication on the existing
+ * file descriptor @fd. The @initial_buffer contains any data already read from
+ * @fd which should be used before starting to read new data.
*
- * This function can be cancelled with gst_rtsp_connection_flush().
+ * Returns: #GST_RTSP_OK when @conn contains a valid connection.
*
- * Returns: #GST_RTSP_OK when a connection could be made.
+ * Since: 0.10.25
*/
GstRTSPResult
-gst_rtsp_connection_connect (GstRTSPConnection * conn, GTimeVal * timeout)
+gst_rtsp_connection_create_from_fd (gint fd, const gchar * ip, guint16 port,
+ const gchar * initial_buffer, GstRTSPConnection ** conn)
{
- gint fd;
- struct sockaddr_in sa_in;
- struct hostent *hostinfo;
- const gchar *ip;
- struct in_addr addr;
- gint ret;
- guint16 port;
+ GstRTSPConnection *newconn = NULL;
GstRTSPUrl *url;
- GstClockTime to;
- gint retval;
-
#ifdef G_OS_WIN32
- unsigned long flags = 1;
- struct in_addr *addrp;
+ gulong flags = 1;
+#endif
+ GstRTSPResult res;
+
+ g_return_val_if_fail (fd >= 0, GST_RTSP_EINVAL);
+ g_return_val_if_fail (ip != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+
+ /* set to non-blocking mode so that we can cancel the communication */
+#ifndef G_OS_WIN32
+ fcntl (fd, F_SETFL, O_NONBLOCK);
#else
- char **addrs;
- gchar ipbuf[INET_ADDRSTRLEN];
+ ioctlsocket (fd, FIONBIO, &flags);
#endif /* G_OS_WIN32 */
- g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
- g_return_val_if_fail (conn->url != NULL, GST_RTSP_EINVAL);
- g_return_val_if_fail (conn->fd.fd < 0, GST_RTSP_EINVAL);
+ /* create a url for the client address */
+ url = g_new0 (GstRTSPUrl, 1);
+ url->host = g_strdup (ip);
+ url->port = port;
- url = conn->url;
+ /* now create the connection object */
+ GST_RTSP_CHECK (gst_rtsp_connection_create (url, &newconn), newconn_failed);
+ gst_rtsp_url_free (url);
- /* first check if it already is an IP address */
- if (inet_aton (url->host, &addr)) {
- ip = url->host;
- } else {
- hostinfo = gethostbyname (url->host);
- if (!hostinfo)
- goto not_resolved; /* h_errno set */
+ ADD_POLLFD (newconn->fdset, &newconn->fd0, fd);
- if (hostinfo->h_addrtype != AF_INET)
- goto not_ip; /* host not an IP host */
-#ifdef G_OS_WIN32
- addrp = (struct in_addr *) hostinfo->h_addr_list[0];
- /* this is not threadsafe */
- ip = inet_ntoa (*addrp);
+ /* both read and write initially */
+ newconn->readfd = &newconn->fd0;
+ newconn->writefd = &newconn->fd0;
+
+ newconn->ip = g_strdup (ip);
+
+ newconn->initial_buffer = g_strdup (initial_buffer);
+
+ *conn = newconn;
+
+ return GST_RTSP_OK;
+
+ /* ERRORS */
+newconn_failed:
+ {
+ gst_rtsp_url_free (url);
+ return res;
+ }
+}
+
+/**
+ * gst_rtsp_connection_accept:
+ * @sock: a socket
+ * @conn: storage for a #GstRTSPConnection
+ *
+ * Accept a new connection on @sock and create a new #GstRTSPConnection for
+ * handling communication on new socket.
+ *
+ * Returns: #GST_RTSP_OK when @conn contains a valid connection.
+ *
+ * Since: 0.10.23
+ */
+GstRTSPResult
+gst_rtsp_connection_accept (gint sock, GstRTSPConnection ** conn)
+{
+ int fd;
+ union gst_sockaddr sa;
+ socklen_t slen = sizeof (sa);
+ gchar ip[INET6_ADDRSTRLEN];
+ guint16 port;
+
+ g_return_val_if_fail (sock >= 0, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+
+ memset (&sa, 0, slen);
+
+#ifndef G_OS_WIN32
+ fd = accept (sock, &sa.sa, &slen);
#else
- addrs = hostinfo->h_addr_list;
- ip = inet_ntop (AF_INET, (struct in_addr *) addrs[0], ipbuf,
- sizeof (ipbuf));
+ fd = accept (sock, &sa.sa, (gint *) & slen);
#endif /* G_OS_WIN32 */
+ if (fd == -1)
+ goto accept_failed;
+
+ if (getnameinfo (&sa.sa, slen, ip, sizeof (ip), NULL, 0, NI_NUMERICHOST) != 0)
+ goto getnameinfo_failed;
+
+ if (sa.sa.sa_family == AF_INET)
+ port = sa.sa_in.sin_port;
+ else if (sa.sa.sa_family == AF_INET6)
+ port = sa.sa_in6.sin6_port;
+ else
+ goto wrong_family;
+
+ return gst_rtsp_connection_create_from_fd (fd, ip, port, NULL, conn);
+
+ /* ERRORS */
+accept_failed:
+ {
+ return GST_RTSP_ESYS;
+ }
+getnameinfo_failed:
+wrong_family:
+ {
+ CLOSE_SOCKET (fd);
+ return GST_RTSP_ERROR;
}
+}
- /* get the port from the url */
- gst_rtsp_url_get_port (url, &port);
+static gchar *
+do_resolve (const gchar * host)
+{
+ static gchar ip[INET6_ADDRSTRLEN];
+ struct addrinfo *aires, hints;
+ struct addrinfo *ai;
+ gint aierr;
+
+ memset (&hints, 0, sizeof (struct addrinfo));
+ hints.ai_family = AF_UNSPEC; /* Allow IPv4 or IPv6 */
+ hints.ai_socktype = SOCK_DGRAM; /* Datagram socket */
+ hints.ai_flags = AI_PASSIVE; /* For wildcard IP address */
+ hints.ai_protocol = 0; /* Any protocol */
+ hints.ai_canonname = NULL;
+ hints.ai_addr = NULL;
+ hints.ai_next = NULL;
+
+ aierr = getaddrinfo (host, NULL, &hints, &aires);
+ if (aierr != 0)
+ goto no_addrinfo;
+
+ for (ai = aires; ai; ai = ai->ai_next) {
+ if (ai->ai_family == AF_INET || ai->ai_family == AF_INET6) {
+ break;
+ }
+ }
+ if (ai == NULL)
+ goto no_family;
+
+ aierr = getnameinfo (ai->ai_addr, ai->ai_addrlen, ip, sizeof (ip), NULL, 0,
+ NI_NUMERICHOST | NI_NUMERICSERV);
+ if (aierr != 0)
+ goto no_address;
+
+ freeaddrinfo (aires);
+
+ return g_strdup (ip);
+
+ /* ERRORS */
+no_addrinfo:
+ {
+ GST_ERROR ("no addrinfo found for %s: %s", host, gai_strerror (aierr));
+ return NULL;
+ }
+no_family:
+ {
+ GST_ERROR ("no family found for %s", host);
+ freeaddrinfo (aires);
+ return NULL;
+ }
+no_address:
+ {
+ GST_ERROR ("no address found for %s: %s", host, gai_strerror (aierr));
+ freeaddrinfo (aires);
+ return NULL;
+ }
+}
+
+static GstRTSPResult
+do_connect (const gchar * ip, guint16 port, GstPollFD * fdout,
+ GstPoll * fdset, GTimeVal * timeout)
+{
+ gint fd;
+ struct addrinfo hints;
+ struct addrinfo *aires;
+ struct addrinfo *ai;
+ gint aierr;
+ gchar service[NI_MAXSERV];
+ gint ret;
+#ifdef G_OS_WIN32
+ unsigned long flags = 1;
+#endif /* G_OS_WIN32 */
+ GstClockTime to;
+ gint retval;
+
+ memset (&hints, 0, sizeof hints);
+ hints.ai_flags = AI_NUMERICHOST;
+ hints.ai_family = AF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ g_snprintf (service, sizeof (service) - 1, "%hu", port);
+ service[sizeof (service) - 1] = '\0';
- memset (&sa_in, 0, sizeof (sa_in));
- sa_in.sin_family = AF_INET; /* network socket */
- sa_in.sin_port = htons (port); /* on port */
- sa_in.sin_addr.s_addr = inet_addr (ip); /* on host ip */
+ aierr = getaddrinfo (ip, service, &hints, &aires);
+ if (aierr != 0)
+ goto no_addrinfo;
- fd = socket (AF_INET, SOCK_STREAM, 0);
+ for (ai = aires; ai; ai = ai->ai_next) {
+ if (ai->ai_family == AF_INET || ai->ai_family == AF_INET6) {
+ break;
+ }
+ }
+ if (ai == NULL)
+ goto no_family;
+
+ fd = socket (ai->ai_family, SOCK_STREAM, 0);
if (fd == -1)
- goto sys_error;
+ goto no_socket;
/* set to non-blocking mode so that we can cancel the connect */
#ifndef G_OS_WIN32
#endif /* G_OS_WIN32 */
/* add the socket to our fdset */
- conn->fd.fd = fd;
- gst_poll_add_fd (conn->fdset, &conn->fd);
+ ADD_POLLFD (fdset, fdout, fd);
/* we are going to connect ASYNC now */
- ret = connect (fd, (struct sockaddr *) &sa_in, sizeof (sa_in));
+ ret = connect (fd, ai->ai_addr, ai->ai_addrlen);
if (ret == 0)
goto done;
- if (ERRNO_IS_NOT_EINPROGRESS)
+ if (!ERRNO_IS_EINPROGRESS)
goto sys_error;
/* wait for connect to complete up to the specified timeout or until we got
* interrupted. */
- gst_poll_fd_ctl_write (conn->fdset, &conn->fd, TRUE);
+ gst_poll_fd_ctl_write (fdset, fdout, TRUE);
to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
do {
- retval = gst_poll_wait (conn->fdset, to);
+ retval = gst_poll_wait (fdset, to);
} while (retval == -1 && (errno == EINTR || errno == EAGAIN));
if (retval == 0)
goto sys_error;
/* we can still have an error connecting on windows */
- if (gst_poll_fd_has_error (conn->fdset, &conn->fd))
+ if (gst_poll_fd_has_error (fdset, fdout)) {
+ socklen_t len = sizeof (errno);
+#ifndef G_OS_WIN32
+ getsockopt (fd, SOL_SOCKET, SO_ERROR, &errno, &len);
+#else
+ getsockopt (fd, SOL_SOCKET, SO_ERROR, (char *) &errno, &len);
+#endif
goto sys_error;
+ } else {
+#ifdef __APPLE__
+ /* osx wakes up select with POLLOUT if the connection is refused... */
+ socklen_t len = sizeof (errno);
+ getsockopt (fd, SOL_SOCKET, SO_ERROR, (char *) &errno, &len);
+ if (errno != 0)
+ goto sys_error;
+#endif
+ }
- gst_poll_fd_ignored (conn->fdset, &conn->fd);
+ gst_poll_fd_ignored (fdset, fdout);
done:
- conn->ip = g_strdup (ip);
+ freeaddrinfo (aires);
return GST_RTSP_OK;
-sys_error:
+ /* ERRORS */
+no_addrinfo:
{
- if (conn->fd.fd >= 0) {
- gst_poll_remove_fd (conn->fdset, &conn->fd);
- conn->fd.fd = -1;
- }
- if (fd >= 0)
- CLOSE_SOCKET (fd);
- return GST_RTSP_ESYS;
+ GST_ERROR ("no addrinfo found for %s: %s", ip, gai_strerror (aierr));
+ return GST_RTSP_ERROR;
}
-not_resolved:
+no_family:
{
- return GST_RTSP_ENET;
+ GST_ERROR ("no family found for %s", ip);
+ freeaddrinfo (aires);
+ return GST_RTSP_ERROR;
+ }
+no_socket:
+ {
+ GST_ERROR ("no socket %d (%s)", errno, g_strerror (errno));
+ freeaddrinfo (aires);
+ return GST_RTSP_ESYS;
}
-not_ip:
+sys_error:
{
- return GST_RTSP_ENOTIP;
+ GST_ERROR ("system error %d (%s)", errno, g_strerror (errno));
+ REMOVE_POLLFD (fdset, fdout);
+ freeaddrinfo (aires);
+ return GST_RTSP_ESYS;
}
timeout:
{
- if (conn->fd.fd >= 0) {
- gst_poll_remove_fd (conn->fdset, &conn->fd);
- conn->fd.fd = -1;
- }
- if (fd >= 0)
- CLOSE_SOCKET (fd);
+ GST_ERROR ("timeout");
+ REMOVE_POLLFD (fdset, fdout);
+ freeaddrinfo (aires);
return GST_RTSP_ETIMEOUT;
}
}
-static void
-md5_digest_to_hex_string (unsigned char digest[16], char string[33])
+static GstRTSPResult
+setup_tunneling (GstRTSPConnection * conn, GTimeVal * timeout)
{
- static const char hexdigits[] = "0123456789abcdef";
- int i;
+ gint i;
+ GstRTSPResult res;
+ gchar *ip;
+ gchar *uri;
+ gchar *value;
+ guint16 port, url_port;
+ GstRTSPUrl *url;
+ gchar *hostparam;
+ GstRTSPMessage *msg;
+ GstRTSPMessage response;
+ gboolean old_http;
- for (i = 0; i < 16; i++) {
- string[i * 2] = hexdigits[(digest[i] >> 4) & 0x0f];
- string[i * 2 + 1] = hexdigits[digest[i] & 0x0f];
- }
- string[32] = 0;
-}
+ memset (&response, 0, sizeof (response));
+ gst_rtsp_message_init (&response);
-static void
-auth_digest_compute_hex_urp (const gchar * username,
- const gchar * realm, const gchar * password, gchar hex_urp[33])
-{
- struct MD5Context md5_context;
- unsigned char digest[16];
+ /* create a random sessionid */
+ for (i = 0; i < TUNNELID_LEN; i++)
+ conn->tunnelid[i] = g_random_int_range ('a', 'z');
+ conn->tunnelid[TUNNELID_LEN - 1] = '\0';
- MD5Init (&md5_context);
- MD5Update (&md5_context, username, strlen (username));
- MD5Update (&md5_context, ":", 1);
- MD5Update (&md5_context, realm, strlen (realm));
- MD5Update (&md5_context, ":", 1);
- MD5Update (&md5_context, password, strlen (password));
- MD5Final (digest, &md5_context);
- md5_digest_to_hex_string (digest, hex_urp);
-}
+ url = conn->url;
+ /* get the port from the url */
+ gst_rtsp_url_get_port (url, &url_port);
+
+ if (conn->proxy_host) {
+ uri = g_strdup_printf ("http://%s:%d%s%s%s", url->host, url_port,
+ url->abspath, url->query ? "?" : "", url->query ? url->query : "");
+ hostparam = g_strdup_printf ("%s:%d", url->host, url_port);
+ ip = conn->proxy_host;
+ port = conn->proxy_port;
+ } else {
+ uri = g_strdup_printf ("%s%s%s", url->abspath, url->query ? "?" : "",
+ url->query ? url->query : "");
+ hostparam = NULL;
+ ip = conn->ip;
+ port = url_port;
+ }
-static void
-auth_digest_compute_response (const gchar * method,
- const gchar * uri, const gchar * hex_a1, const gchar * nonce,
- gchar response[33])
-{
- char hex_a2[33];
- struct MD5Context md5_context;
- unsigned char digest[16];
+ /* create the GET request for the read connection */
+ GST_RTSP_CHECK (gst_rtsp_message_new_request (&msg, GST_RTSP_GET, uri),
+ no_message);
+ msg->type = GST_RTSP_MESSAGE_HTTP_REQUEST;
+
+ if (hostparam != NULL)
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_HOST, hostparam);
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_X_SESSIONCOOKIE,
+ conn->tunnelid);
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_ACCEPT,
+ "application/x-rtsp-tunnelled");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_CACHE_CONTROL, "no-cache");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_PRAGMA, "no-cache");
+
+ /* we start by writing to this fd */
+ conn->writefd = &conn->fd0;
+
+ /* we need to temporarily set conn->tunneled to FALSE to prevent the HTTP
+ * request from being base64 encoded */
+ conn->tunneled = FALSE;
+ GST_RTSP_CHECK (gst_rtsp_connection_send (conn, msg, timeout), write_failed);
+ gst_rtsp_message_free (msg);
+ conn->tunneled = TRUE;
+
+ /* receive the response to the GET request */
+ /* we need to temporarily set manual_http to TRUE since
+ * gst_rtsp_connection_receive() will treat the HTTP response as a parsing
+ * failure otherwise */
+ old_http = conn->manual_http;
+ conn->manual_http = TRUE;
+ GST_RTSP_CHECK (gst_rtsp_connection_receive (conn, &response, timeout),
+ read_failed);
+ conn->manual_http = old_http;
+
+ if (response.type != GST_RTSP_MESSAGE_HTTP_RESPONSE ||
+ response.type_data.response.code != GST_RTSP_STS_OK)
+ goto wrong_result;
+
+ if (gst_rtsp_message_get_header (&response, GST_RTSP_HDR_X_SERVER_IP_ADDRESS,
+ &value, 0) == GST_RTSP_OK) {
+ if (conn->proxy_host) {
+ /* if we use a proxy we need to change the destination url */
+ g_free (url->host);
+ url->host = g_strdup (value);
+ g_free (hostparam);
+ hostparam = g_strdup_printf ("%s:%d", url->host, url_port);
+ } else {
+ /* and resolve the new ip address */
+ if (!(ip = do_resolve (value)))
+ goto not_resolved;
+ g_free (conn->ip);
+ conn->ip = ip;
+ }
+ }
- /* compute A2 */
- MD5Init (&md5_context);
- MD5Update (&md5_context, method, strlen (method));
- MD5Update (&md5_context, ":", 1);
- MD5Update (&md5_context, uri, strlen (uri));
- MD5Final (digest, &md5_context);
- md5_digest_to_hex_string (digest, hex_a2);
+ /* connect to the host/port */
+ res = do_connect (ip, port, &conn->fd1, conn->fdset, timeout);
+ if (res != GST_RTSP_OK)
+ goto connect_failed;
+
+ /* this is now our writing socket */
+ conn->writefd = &conn->fd1;
+
+ /* create the POST request for the write connection */
+ GST_RTSP_CHECK (gst_rtsp_message_new_request (&msg, GST_RTSP_POST, uri),
+ no_message);
+ msg->type = GST_RTSP_MESSAGE_HTTP_REQUEST;
+
+ if (hostparam != NULL)
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_HOST, hostparam);
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_X_SESSIONCOOKIE,
+ conn->tunnelid);
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_ACCEPT,
+ "application/x-rtsp-tunnelled");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_CACHE_CONTROL, "no-cache");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_PRAGMA, "no-cache");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_EXPIRES,
+ "Sun, 9 Jan 1972 00:00:00 GMT");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_CONTENT_LENGTH, "32767");
+
+ /* we need to temporarily set conn->tunneled to FALSE to prevent the HTTP
+ * request from being base64 encoded */
+ conn->tunneled = FALSE;
+ GST_RTSP_CHECK (gst_rtsp_connection_send (conn, msg, timeout), write_failed);
+ gst_rtsp_message_free (msg);
+ conn->tunneled = TRUE;
+
+exit:
+ gst_rtsp_message_unset (&response);
+ g_free (hostparam);
+ g_free (uri);
- /* compute KD */
- MD5Init (&md5_context);
- MD5Update (&md5_context, hex_a1, strlen (hex_a1));
- MD5Update (&md5_context, ":", 1);
- MD5Update (&md5_context, nonce, strlen (nonce));
- MD5Update (&md5_context, ":", 1);
+ return res;
- MD5Update (&md5_context, hex_a2, 32);
- MD5Final (digest, &md5_context);
- md5_digest_to_hex_string (digest, response);
+ /* ERRORS */
+no_message:
+ {
+ GST_ERROR ("failed to create request (%d)", res);
+ goto exit;
+ }
+write_failed:
+ {
+ GST_ERROR ("write failed (%d)", res);
+ gst_rtsp_message_free (msg);
+ conn->tunneled = TRUE;
+ goto exit;
+ }
+read_failed:
+ {
+ GST_ERROR ("read failed (%d)", res);
+ conn->manual_http = FALSE;
+ goto exit;
+ }
+wrong_result:
+ {
+ GST_ERROR ("got failure response %d %s", response.type_data.response.code,
+ response.type_data.response.reason);
+ res = GST_RTSP_ERROR;
+ goto exit;
+ }
+not_resolved:
+ {
+ GST_ERROR ("could not resolve %s", conn->ip);
+ res = GST_RTSP_ENET;
+ goto exit;
+ }
+connect_failed:
+ {
+ GST_ERROR ("failed to connect");
+ goto exit;
+ }
}
-static void
-add_auth_header (GstRTSPConnection * conn, GstRTSPMessage * message)
+/**
+ * gst_rtsp_connection_connect:
+ * @conn: a #GstRTSPConnection
+ * @timeout: a #GTimeVal timeout
+ *
+ * Attempt to connect to the url of @conn made with
+ * gst_rtsp_connection_create(). If @timeout is #NULL this function can block
+ * forever. If @timeout contains a valid timeout, this function will return
+ * #GST_RTSP_ETIMEOUT after the timeout expired.
+ *
+ * This function can be cancelled with gst_rtsp_connection_flush().
+ *
+ * Returns: #GST_RTSP_OK when a connection could be made.
+ */
+GstRTSPResult
+gst_rtsp_connection_connect (GstRTSPConnection * conn, GTimeVal * timeout)
{
- switch (conn->auth_method) {
- case GST_RTSP_AUTH_BASIC:{
- gchar *user_pass =
- g_strdup_printf ("%s:%s", conn->username, conn->passwd);
- gchar *user_pass64 =
- gst_rtsp_base64_encode (user_pass, strlen (user_pass));
- gchar *auth_string = g_strdup_printf ("Basic %s", user_pass64);
+ GstRTSPResult res;
+ gchar *ip;
+ guint16 port;
+ GstRTSPUrl *url;
+
+ g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->url != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->fd0.fd < 0, GST_RTSP_EINVAL);
+
+ url = conn->url;
+
+ if (conn->proxy_host && conn->tunneled) {
+ if (!(ip = do_resolve (conn->proxy_host))) {
+ GST_ERROR ("could not resolve %s", conn->proxy_host);
+ goto not_resolved;
+ }
+ port = conn->proxy_port;
+ g_free (conn->proxy_host);
+ conn->proxy_host = ip;
+ } else {
+ if (!(ip = do_resolve (url->host))) {
+ GST_ERROR ("could not resolve %s", url->host);
+ goto not_resolved;
+ }
+ /* get the port from the url */
+ gst_rtsp_url_get_port (url, &port);
+
+ g_free (conn->ip);
+ conn->ip = ip;
+ }
+
+ /* connect to the host/port */
+ res = do_connect (ip, port, &conn->fd0, conn->fdset, timeout);
+ if (res != GST_RTSP_OK)
+ goto connect_failed;
+
+ /* this is our read URL */
+ conn->readfd = &conn->fd0;
+
+ if (conn->tunneled) {
+ res = setup_tunneling (conn, timeout);
+ if (res != GST_RTSP_OK)
+ goto tunneling_failed;
+ } else {
+ conn->writefd = &conn->fd0;
+ }
+
+ return GST_RTSP_OK;
+
+not_resolved:
+ {
+ return GST_RTSP_ENET;
+ }
+connect_failed:
+ {
+ GST_ERROR ("failed to connect");
+ return res;
+ }
+tunneling_failed:
+ {
+ GST_ERROR ("failed to setup tunneling");
+ return res;
+ }
+}
+
+static void
+auth_digest_compute_hex_urp (const gchar * username,
+ const gchar * realm, const gchar * password, gchar hex_urp[33])
+{
+ GChecksum *md5_context = g_checksum_new (G_CHECKSUM_MD5);
+ const gchar *digest_string;
+
+ g_checksum_update (md5_context, (const guchar *) username, strlen (username));
+ g_checksum_update (md5_context, (const guchar *) ":", 1);
+ g_checksum_update (md5_context, (const guchar *) realm, strlen (realm));
+ g_checksum_update (md5_context, (const guchar *) ":", 1);
+ g_checksum_update (md5_context, (const guchar *) password, strlen (password));
+ digest_string = g_checksum_get_string (md5_context);
+
+ memset (hex_urp, 0, 33);
+ memcpy (hex_urp, digest_string, strlen (digest_string));
+
+ g_checksum_free (md5_context);
+}
+
+static void
+auth_digest_compute_response (const gchar * method,
+ const gchar * uri, const gchar * hex_a1, const gchar * nonce,
+ gchar response[33])
+{
+ char hex_a2[33] = { 0, };
+ GChecksum *md5_context = g_checksum_new (G_CHECKSUM_MD5);
+ const gchar *digest_string;
+
+ /* compute A2 */
+ g_checksum_update (md5_context, (const guchar *) method, strlen (method));
+ g_checksum_update (md5_context, (const guchar *) ":", 1);
+ g_checksum_update (md5_context, (const guchar *) uri, strlen (uri));
+ digest_string = g_checksum_get_string (md5_context);
+ memcpy (hex_a2, digest_string, strlen (digest_string));
+
+ /* compute KD */
+ g_checksum_reset (md5_context);
+ g_checksum_update (md5_context, (const guchar *) hex_a1, strlen (hex_a1));
+ g_checksum_update (md5_context, (const guchar *) ":", 1);
+ g_checksum_update (md5_context, (const guchar *) nonce, strlen (nonce));
+ g_checksum_update (md5_context, (const guchar *) ":", 1);
+
+ g_checksum_update (md5_context, (const guchar *) hex_a2, 32);
+ digest_string = g_checksum_get_string (md5_context);
+ memset (response, 0, 33);
+ memcpy (response, digest_string, strlen (digest_string));
+
+ g_checksum_free (md5_context);
+}
+
+static void
+add_auth_header (GstRTSPConnection * conn, GstRTSPMessage * message)
+{
+ switch (conn->auth_method) {
+ case GST_RTSP_AUTH_BASIC:{
+ gchar *user_pass;
+ gchar *user_pass64;
+ gchar *auth_string;
+
+ if (conn->username == NULL || conn->passwd == NULL)
+ break;
+
+ user_pass = g_strdup_printf ("%s:%s", conn->username, conn->passwd);
+ user_pass64 = g_base64_encode ((guchar *) user_pass, strlen (user_pass));
+ auth_string = g_strdup_printf ("Basic %s", user_pass64);
gst_rtsp_message_take_header (message, GST_RTSP_HDR_AUTHORIZATION,
auth_string);
const gchar *method;
/* we need to have some params set */
- if (conn->auth_params == NULL)
+ if (conn->auth_params == NULL || conn->username == NULL ||
+ conn->passwd == NULL)
break;
/* we need the realm and nonce */
}
static void
-add_date_header (GstRTSPMessage * message)
+gen_date_string (gchar * date_string, guint len)
{
- GTimeVal tv;
- gchar date_string[100];
+ static const char wkdays[7][4] =
+ { "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat" };
+ static const char months[12][4] =
+ { "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct",
+ "Nov", "Dec"
+ };
+ struct tm tm;
time_t t;
-#ifdef HAVE_GMTIME_R
- struct tm tm_;
-#endif
-
- g_get_current_time (&tv);
- t = (time_t) tv.tv_sec;
+ time (&t);
#ifdef HAVE_GMTIME_R
- strftime (date_string, sizeof (date_string), "%a, %d %b %Y %H:%M:%S GMT",
- gmtime_r (&t, &tm_));
+ gmtime_r (&t, &tm);
#else
- strftime (date_string, sizeof (date_string), "%a, %d %b %Y %H:%M:%S GMT",
- gmtime (&t));
+ tm = *gmtime (&t);
#endif
- gst_rtsp_message_add_header (message, GST_RTSP_HDR_DATE, date_string);
+ g_snprintf (date_string, len, "%s, %02d %s %04d %02d:%02d:%02d GMT",
+ wkdays[tm.tm_wday], tm.tm_mday, months[tm.tm_mon], tm.tm_year + 1900,
+ tm.tm_hour, tm.tm_min, tm.tm_sec);
+}
+
+static GstRTSPResult
+write_bytes (gint fd, const guint8 * buffer, guint * idx, guint size)
+{
+ guint left;
+
+ if (G_UNLIKELY (*idx > size))
+ return GST_RTSP_ERROR;
+
+ left = size - *idx;
+
+ while (left) {
+ gint r;
+
+ r = WRITE_SOCKET (fd, &buffer[*idx], left);
+ if (G_UNLIKELY (r == 0)) {
+ return GST_RTSP_EINTR;
+ } else if (G_UNLIKELY (r < 0)) {
+ if (ERRNO_IS_EAGAIN)
+ return GST_RTSP_EINTR;
+ if (!ERRNO_IS_EINTR)
+ return GST_RTSP_ESYS;
+ } else {
+ left -= r;
+ *idx += r;
+ }
+ }
+ return GST_RTSP_OK;
+}
+
+static gint
+fill_raw_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size)
+{
+ gint out = 0;
+
+ if (G_UNLIKELY (conn->initial_buffer != NULL)) {
+ gsize left = strlen (&conn->initial_buffer[conn->initial_buffer_offset]);
+
+ out = MIN (left, size);
+ memcpy (buffer, &conn->initial_buffer[conn->initial_buffer_offset], out);
+
+ if (left == (gsize) out) {
+ g_free (conn->initial_buffer);
+ conn->initial_buffer = NULL;
+ conn->initial_buffer_offset = 0;
+ } else
+ conn->initial_buffer_offset += out;
+ }
+
+ if (G_LIKELY (size > (guint) out)) {
+ gint r;
+
+ r = READ_SOCKET (conn->readfd->fd, &buffer[out], size - out);
+ if (r <= 0) {
+ if (out == 0)
+ out = r;
+ } else
+ out += r;
+ }
+
+ return out;
+}
+
+static gint
+fill_bytes (GstRTSPConnection * conn, guint8 * buffer, guint size)
+{
+ DecodeCtx *ctx = conn->ctxp;
+ gint out = 0;
+
+ if (ctx) {
+ while (size > 0) {
+ guint8 in[sizeof (ctx->out) * 4 / 3];
+ gint r;
+
+ while (size > 0 && ctx->cout < ctx->coutl) {
+ /* we have some leftover bytes */
+ *buffer++ = ctx->out[ctx->cout++];
+ size--;
+ out++;
+ }
+
+ /* got what we needed? */
+ if (size == 0)
+ break;
+
+ /* try to read more bytes */
+ r = fill_raw_bytes (conn, in, sizeof (in));
+ if (r <= 0) {
+ if (out == 0)
+ out = r;
+ break;
+ }
+
+ ctx->cout = 0;
+ ctx->coutl =
+ g_base64_decode_step ((gchar *) in, r, ctx->out, &ctx->state,
+ &ctx->save);
+ }
+ } else {
+ out = fill_raw_bytes (conn, buffer, size);
+ }
+
+ return out;
+}
+
+static GstRTSPResult
+read_bytes (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
+{
+ guint left;
+
+ if (G_UNLIKELY (*idx > size))
+ return GST_RTSP_ERROR;
+
+ left = size - *idx;
+
+ while (left) {
+ gint r;
+
+ r = fill_bytes (conn, &buffer[*idx], left);
+ if (G_UNLIKELY (r == 0)) {
+ return GST_RTSP_EEOF;
+ } else if (G_UNLIKELY (r < 0)) {
+ if (ERRNO_IS_EAGAIN)
+ return GST_RTSP_EINTR;
+ if (!ERRNO_IS_EINTR)
+ return GST_RTSP_ESYS;
+ } else {
+ left -= r;
+ *idx += r;
+ }
+ }
+ return GST_RTSP_OK;
+}
+
+/* The code below tries to handle clients using \r, \n or \r\n to indicate the
+ * end of a line. It even does its best to handle clients which mix them (even
+ * though this is a really stupid idea (tm).) It also handles Line White Space
+ * (LWS), where a line end followed by whitespace is considered LWS. This is
+ * the method used in RTSP (and HTTP) to break long lines.
+ */
+static GstRTSPResult
+read_line (GstRTSPConnection * conn, guint8 * buffer, guint * idx, guint size)
+{
+ while (TRUE) {
+ guint8 c;
+ gint r;
+
+ if (conn->read_ahead == READ_AHEAD_EOH) {
+ /* the last call to read_line() already determined that we have reached
+ * the end of the headers, so convey that information now */
+ conn->read_ahead = 0;
+ break;
+ } else if (conn->read_ahead == READ_AHEAD_CRLF) {
+ /* the last call to read_line() left off after having read \r\n */
+ c = '\n';
+ } else if (conn->read_ahead == READ_AHEAD_CRLFCR) {
+ /* the last call to read_line() left off after having read \r\n\r */
+ c = '\r';
+ } else if (conn->read_ahead != 0) {
+ /* the last call to read_line() left us with a character to start with */
+ c = (guint8) conn->read_ahead;
+ conn->read_ahead = 0;
+ } else {
+ /* read the next character */
+ r = fill_bytes (conn, &c, 1);
+ if (G_UNLIKELY (r == 0)) {
+ return GST_RTSP_EEOF;
+ } else if (G_UNLIKELY (r < 0)) {
+ if (ERRNO_IS_EAGAIN)
+ return GST_RTSP_EINTR;
+ if (!ERRNO_IS_EINTR)
+ return GST_RTSP_ESYS;
+ continue;
+ }
+ }
+
+ /* special treatment of line endings */
+ if (c == '\r' || c == '\n') {
+ guint8 read_ahead;
+
+ retry:
+ /* need to read ahead one more character to know what to do... */
+ r = fill_bytes (conn, &read_ahead, 1);
+ if (G_UNLIKELY (r == 0)) {
+ return GST_RTSP_EEOF;
+ } else if (G_UNLIKELY (r < 0)) {
+ if (ERRNO_IS_EAGAIN) {
+ /* remember the original character we read and try again next time */
+ if (conn->read_ahead == 0)
+ conn->read_ahead = c;
+ return GST_RTSP_EINTR;
+ }
+ if (!ERRNO_IS_EINTR)
+ return GST_RTSP_ESYS;
+ goto retry;
+ }
+
+ if (read_ahead == ' ' || read_ahead == '\t') {
+ if (conn->read_ahead == READ_AHEAD_CRLFCR) {
+ /* got \r\n\r followed by whitespace, treat it as a normal line
+ * followed by one starting with LWS */
+ conn->read_ahead = read_ahead;
+ break;
+ } else {
+ /* got LWS, change the line ending to a space and continue */
+ c = ' ';
+ conn->read_ahead = read_ahead;
+ }
+ } else if (conn->read_ahead == READ_AHEAD_CRLFCR) {
+ if (read_ahead == '\r' || read_ahead == '\n') {
+ /* got \r\n\r\r or \r\n\r\n, treat it as the end of the headers */
+ conn->read_ahead = READ_AHEAD_EOH;
+ break;
+ } else {
+ /* got \r\n\r followed by something else, this is not really
+ * supported since we have probably just eaten the first character
+ * of the body or the next message, so just ignore the second \r
+ * and live with it... */
+ conn->read_ahead = read_ahead;
+ break;
+ }
+ } else if (conn->read_ahead == READ_AHEAD_CRLF) {
+ if (read_ahead == '\r') {
+ /* got \r\n\r so far, need one more character... */
+ conn->read_ahead = READ_AHEAD_CRLFCR;
+ goto retry;
+ } else if (read_ahead == '\n') {
+ /* got \r\n\n, treat it as the end of the headers */
+ conn->read_ahead = READ_AHEAD_EOH;
+ break;
+ } else {
+ /* found the end of a line, keep read_ahead for the next line */
+ conn->read_ahead = read_ahead;
+ break;
+ }
+ } else if (c == read_ahead) {
+ /* got double \r or \n, treat it as the end of the headers */
+ conn->read_ahead = READ_AHEAD_EOH;
+ break;
+ } else if (c == '\r' && read_ahead == '\n') {
+ /* got \r\n so far, still need more to know what to do... */
+ conn->read_ahead = READ_AHEAD_CRLF;
+ goto retry;
+ } else {
+ /* found the end of a line, keep read_ahead for the next line */
+ conn->read_ahead = read_ahead;
+ break;
+ }
+ }
+
+ if (G_LIKELY (*idx < size - 1))
+ buffer[(*idx)++] = c;
+ }
+ buffer[*idx] = '\0';
+
+ return GST_RTSP_OK;
}
/**
gst_rtsp_connection_write (GstRTSPConnection * conn, const guint8 * data,
guint size, GTimeVal * timeout)
{
- guint towrite;
+ guint offset;
gint retval;
GstClockTime to;
+ GstRTSPResult res;
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
g_return_val_if_fail (data != NULL || size == 0, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->writefd != NULL, GST_RTSP_EINVAL);
gst_poll_set_controllable (conn->fdset, TRUE);
- gst_poll_fd_ctl_write (conn->fdset, &conn->fd, TRUE);
- gst_poll_fd_ctl_read (conn->fdset, &conn->fd, FALSE);
+ gst_poll_fd_ctl_write (conn->fdset, conn->writefd, TRUE);
+ gst_poll_fd_ctl_read (conn->fdset, conn->readfd, FALSE);
/* clear all previous poll results */
- gst_poll_fd_ignored (conn->fdset, &conn->fd);
+ gst_poll_fd_ignored (conn->fdset, conn->writefd);
+ gst_poll_fd_ignored (conn->fdset, conn->readfd);
to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
- towrite = size;
+ offset = 0;
- while (towrite > 0) {
- gint written;
+ while (TRUE) {
+ /* try to write */
+ res = write_bytes (conn->writefd->fd, data, &offset, size);
+ if (G_LIKELY (res == GST_RTSP_OK))
+ break;
+ if (G_UNLIKELY (res != GST_RTSP_EINTR))
+ goto write_error;
+ /* not all is written, wait until we can write more */
do {
retval = gst_poll_wait (conn->fdset, to);
} while (retval == -1 && (errno == EINTR || errno == EAGAIN));
- if (retval == 0)
+ if (G_UNLIKELY (retval == 0))
goto timeout;
- if (retval == -1) {
+ if (G_UNLIKELY (retval == -1)) {
if (errno == EBUSY)
goto stopped;
else
goto select_error;
}
- /* now we can write */
- written = WRITE_SOCKET (conn->fd.fd, data, towrite);
- if (written < 0) {
- if (ERRNO_IS_NOT_EAGAIN && ERRNO_IS_NOT_EINTR)
- goto write_error;
- } else {
- towrite -= written;
- data += written;
- }
+ /* could also be an error with read socket */
+ if (gst_poll_fd_has_error (conn->fdset, conn->readfd))
+ goto socket_error;
}
return GST_RTSP_OK;
{
return GST_RTSP_EINTR;
}
+socket_error:
+ {
+ return GST_RTSP_ENET;
+ }
write_error:
{
- return GST_RTSP_ESYS;
+ return res;
}
}
-/**
- * gst_rtsp_connection_send:
- * @conn: a #GstRTSPConnection
- * @message: the message to send
- * @timeout: a timeout value or #NULL
- *
- * Attempt to send @message to the connected @conn, blocking up to
- * the specified @timeout. @timeout can be #NULL, in which case this function
- * might block forever.
- *
- * This function can be cancelled with gst_rtsp_connection_flush().
- *
- * Returns: #GST_RTSP_OK on success.
- */
-GstRTSPResult
-gst_rtsp_connection_send (GstRTSPConnection * conn, GstRTSPMessage * message,
- GTimeVal * timeout)
+static GString *
+message_to_string (GstRTSPConnection * conn, GstRTSPMessage * message)
{
GString *str = NULL;
- GstRTSPResult res;
-
-#ifdef G_OS_WIN32
- WSADATA w;
- int error;
-#endif
-
- g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
- g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
-
-#ifdef G_OS_WIN32
- error = WSAStartup (0x0202, &w);
-
- if (error)
- goto startup_error;
-
- if (w.wVersion != 0x0202)
- goto version_error;
-#endif
str = g_string_new ("");
message->type_data.request.uri, conn->cseq++);
/* add session id if we have one */
if (conn->session_id[0] != '\0') {
+ gst_rtsp_message_remove_header (message, GST_RTSP_HDR_SESSION, -1);
gst_rtsp_message_add_header (message, GST_RTSP_HDR_SESSION,
conn->session_id);
}
g_string_append_printf (str, "RTSP/1.0 %d %s\r\n",
message->type_data.response.code, message->type_data.response.reason);
break;
+ case GST_RTSP_MESSAGE_HTTP_REQUEST:
+ /* create request string */
+ g_string_append_printf (str, "%s %s HTTP/%s\r\n",
+ gst_rtsp_method_as_text (message->type_data.request.method),
+ message->type_data.request.uri,
+ gst_rtsp_version_as_text (message->type_data.request.version));
+ /* add any authentication headers */
+ add_auth_header (conn, message);
+ break;
+ case GST_RTSP_MESSAGE_HTTP_RESPONSE:
+ /* create response string */
+ g_string_append_printf (str, "HTTP/%s %d %s\r\n",
+ gst_rtsp_version_as_text (message->type_data.request.version),
+ message->type_data.response.code, message->type_data.response.reason);
+ break;
case GST_RTSP_MESSAGE_DATA:
{
guint8 data_header[4];
break;
}
default:
- g_return_val_if_reached (GST_RTSP_EINVAL);
+ g_string_free (str, TRUE);
+ g_return_val_if_reached (NULL);
break;
}
/* append headers and body */
if (message->type != GST_RTSP_MESSAGE_DATA) {
+ gchar date_string[100];
+
+ gen_date_string (date_string, sizeof (date_string));
+
/* add date header */
- add_date_header (message);
+ gst_rtsp_message_remove_header (message, GST_RTSP_HDR_DATE, -1);
+ gst_rtsp_message_add_header (message, GST_RTSP_HDR_DATE, date_string);
/* append headers */
gst_rtsp_message_append_headers (message, str);
}
}
+ return str;
+}
+
+/**
+ * gst_rtsp_connection_send:
+ * @conn: a #GstRTSPConnection
+ * @message: the message to send
+ * @timeout: a timeout value or #NULL
+ *
+ * Attempt to send @message to the connected @conn, blocking up to
+ * the specified @timeout. @timeout can be #NULL, in which case this function
+ * might block forever.
+ *
+ * This function can be cancelled with gst_rtsp_connection_flush().
+ *
+ * Returns: #GST_RTSP_OK on success.
+ */
+GstRTSPResult
+gst_rtsp_connection_send (GstRTSPConnection * conn, GstRTSPMessage * message,
+ GTimeVal * timeout)
+{
+ GString *string = NULL;
+ GstRTSPResult res;
+ gchar *str;
+ gsize len;
+
+ g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
+
+ if (G_UNLIKELY (!(string = message_to_string (conn, message))))
+ goto no_message;
+
+ if (conn->tunneled) {
+ str = g_base64_encode ((const guchar *) string->str, string->len);
+ g_string_free (string, TRUE);
+ len = strlen (str);
+ } else {
+ str = string->str;
+ len = string->len;
+ g_string_free (string, FALSE);
+ }
+
/* write request */
- res =
- gst_rtsp_connection_write (conn, (guint8 *) str->str, str->len, timeout);
+ res = gst_rtsp_connection_write (conn, (guint8 *) str, len, timeout);
- g_string_free (str, TRUE);
+ g_free (str);
return res;
-#ifdef G_OS_WIN32
-startup_error:
+no_message:
{
- g_warning ("Error %d on WSAStartup", error);
- return GST_RTSP_EWSASTART;
- }
-version_error:
- {
- g_warning ("Windows sockets are not version 0x202 (current 0x%x)",
- w.wVersion);
- WSACleanup ();
- return GST_RTSP_EWSAVERSION;
+ g_warning ("Wrong message");
+ return GST_RTSP_EINVAL;
}
-#endif
}
static GstRTSPResult
-read_line (gint fd, gchar * buffer, guint size)
+parse_string (gchar * dest, gint size, gchar ** src)
{
- guint idx;
- gchar c;
- gint r;
-
- idx = 0;
- while (TRUE) {
- r = READ_SOCKET (fd, &c, 1);
- if (r == 0) {
- goto eof;
- } else if (r < 0) {
- if (ERRNO_IS_NOT_EAGAIN && ERRNO_IS_NOT_EINTR)
- goto read_error;
- } else {
- if (c == '\n') /* end on \n */
- break;
- if (c == '\r') /* ignore \r */
- continue;
-
- if (idx < size - 1)
- buffer[idx++] = c;
- }
- }
- buffer[idx] = '\0';
-
- return GST_RTSP_OK;
-
-eof:
- {
- return GST_RTSP_EEOF;
- }
-read_error:
- {
- return GST_RTSP_ESYS;
- }
-}
-
-static void
-read_string (gchar * dest, gint size, gchar ** src)
-{
- gint idx;
+ GstRTSPResult res = GST_RTSP_OK;
+ gint idx;
idx = 0;
/* skip spaces */
while (!g_ascii_isspace (**src) && **src != '\0') {
if (idx < size - 1)
dest[idx++] = **src;
+ else
+ res = GST_RTSP_EPARSE;
(*src)++;
}
if (size > 0)
dest[idx] = '\0';
+
+ return res;
}
-static void
-read_key (gchar * dest, gint size, gchar ** src)
+static GstRTSPResult
+parse_protocol_version (gchar * protocol, GstRTSPMsgType * type,
+ GstRTSPVersion * version)
{
- gint idx;
+ GstRTSPResult res = GST_RTSP_OK;
+ gchar *ver;
- idx = 0;
- while (**src != ':' && **src != '\0') {
- if (idx < size - 1)
- dest[idx++] = **src;
- (*src)++;
- }
- if (size > 0)
- dest[idx] = '\0';
+ if (G_LIKELY ((ver = strchr (protocol, '/')) != NULL)) {
+ guint major;
+ guint minor;
+ gchar dummychar;
+
+ *ver++ = '\0';
+
+ /* the version number must be formatted as X.Y with nothing following */
+ if (sscanf (ver, "%u.%u%c", &major, &minor, &dummychar) != 2)
+ res = GST_RTSP_EPARSE;
+
+ if (g_ascii_strcasecmp (protocol, "RTSP") == 0) {
+ if (major != 1 || minor != 0) {
+ *version = GST_RTSP_VERSION_INVALID;
+ res = GST_RTSP_ERROR;
+ }
+ } else if (g_ascii_strcasecmp (protocol, "HTTP") == 0) {
+ if (*type == GST_RTSP_MESSAGE_REQUEST)
+ *type = GST_RTSP_MESSAGE_HTTP_REQUEST;
+ else if (*type == GST_RTSP_MESSAGE_RESPONSE)
+ *type = GST_RTSP_MESSAGE_HTTP_RESPONSE;
+
+ if (major == 1 && minor == 1) {
+ *version = GST_RTSP_VERSION_1_1;
+ } else if (major != 1 || minor != 0) {
+ *version = GST_RTSP_VERSION_INVALID;
+ res = GST_RTSP_ERROR;
+ }
+ } else
+ res = GST_RTSP_EPARSE;
+ } else
+ res = GST_RTSP_EPARSE;
+
+ return res;
}
static GstRTSPResult
-parse_response_status (gchar * buffer, GstRTSPMessage * msg)
+parse_response_status (guint8 * buffer, GstRTSPMessage * msg)
{
- GstRTSPResult res;
+ GstRTSPResult res = GST_RTSP_OK;
+ GstRTSPResult res2;
gchar versionstr[20];
gchar codestr[4];
gint code;
gchar *bptr;
- bptr = buffer;
+ bptr = (gchar *) buffer;
- read_string (versionstr, sizeof (versionstr), &bptr);
- read_string (codestr, sizeof (codestr), &bptr);
+ if (parse_string (versionstr, sizeof (versionstr), &bptr) != GST_RTSP_OK)
+ res = GST_RTSP_EPARSE;
+
+ if (parse_string (codestr, sizeof (codestr), &bptr) != GST_RTSP_OK)
+ res = GST_RTSP_EPARSE;
code = atoi (codestr);
+ if (G_UNLIKELY (*codestr == '\0' || code < 0 || code >= 600))
+ res = GST_RTSP_EPARSE;
while (g_ascii_isspace (*bptr))
bptr++;
- if (strcmp (versionstr, "RTSP/1.0") == 0)
- GST_RTSP_CHECK (gst_rtsp_message_init_response (msg, code, bptr, NULL),
- parse_error);
- else if (strncmp (versionstr, "RTSP/", 5) == 0) {
- GST_RTSP_CHECK (gst_rtsp_message_init_response (msg, code, bptr, NULL),
- parse_error);
- msg->type_data.response.version = GST_RTSP_VERSION_INVALID;
- } else
- goto parse_error;
+ if (G_UNLIKELY (gst_rtsp_message_init_response (msg, code, bptr,
+ NULL) != GST_RTSP_OK))
+ res = GST_RTSP_EPARSE;
- return GST_RTSP_OK;
+ res2 = parse_protocol_version (versionstr, &msg->type,
+ &msg->type_data.response.version);
+ if (G_LIKELY (res == GST_RTSP_OK))
+ res = res2;
-parse_error:
- {
- return GST_RTSP_EPARSE;
- }
+ return res;
}
static GstRTSPResult
-parse_request_line (gchar * buffer, GstRTSPMessage * msg)
+parse_request_line (guint8 * buffer, GstRTSPMessage * msg)
{
GstRTSPResult res = GST_RTSP_OK;
+ GstRTSPResult res2;
gchar versionstr[20];
gchar methodstr[20];
gchar urlstr[4096];
gchar *bptr;
GstRTSPMethod method;
- bptr = buffer;
+ bptr = (gchar *) buffer;
- read_string (methodstr, sizeof (methodstr), &bptr);
+ if (parse_string (methodstr, sizeof (methodstr), &bptr) != GST_RTSP_OK)
+ res = GST_RTSP_EPARSE;
method = gst_rtsp_find_method (methodstr);
- read_string (urlstr, sizeof (urlstr), &bptr);
- if (*urlstr == '\0')
+ if (parse_string (urlstr, sizeof (urlstr), &bptr) != GST_RTSP_OK)
+ res = GST_RTSP_EPARSE;
+ if (G_UNLIKELY (*urlstr == '\0'))
res = GST_RTSP_EPARSE;
- read_string (versionstr, sizeof (versionstr), &bptr);
+ if (parse_string (versionstr, sizeof (versionstr), &bptr) != GST_RTSP_OK)
+ res = GST_RTSP_EPARSE;
- if (*bptr != '\0')
+ if (G_UNLIKELY (*bptr != '\0'))
res = GST_RTSP_EPARSE;
- if (strcmp (versionstr, "RTSP/1.0") == 0) {
- if (gst_rtsp_message_init_request (msg, method, urlstr) != GST_RTSP_OK)
- res = GST_RTSP_EPARSE;
- } else if (strncmp (versionstr, "RTSP/", 5) == 0) {
- if (gst_rtsp_message_init_request (msg, method, urlstr) != GST_RTSP_OK)
- res = GST_RTSP_EPARSE;
- msg->type_data.request.version = GST_RTSP_VERSION_INVALID;
- } else {
- gst_rtsp_message_init_request (msg, method, urlstr);
- msg->type_data.request.version = GST_RTSP_VERSION_INVALID;
+ if (G_UNLIKELY (gst_rtsp_message_init_request (msg, method,
+ urlstr) != GST_RTSP_OK))
res = GST_RTSP_EPARSE;
+
+ res2 = parse_protocol_version (versionstr, &msg->type,
+ &msg->type_data.request.version);
+ if (G_LIKELY (res == GST_RTSP_OK))
+ res = res2;
+
+ if (G_LIKELY (msg->type == GST_RTSP_MESSAGE_REQUEST)) {
+ /* GET and POST are not allowed as RTSP methods */
+ if (msg->type_data.request.method == GST_RTSP_GET ||
+ msg->type_data.request.method == GST_RTSP_POST) {
+ msg->type_data.request.method = GST_RTSP_INVALID;
+ if (res == GST_RTSP_OK)
+ res = GST_RTSP_ERROR;
+ }
+ } else if (msg->type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
+ /* only GET and POST are allowed as HTTP methods */
+ if (msg->type_data.request.method != GST_RTSP_GET &&
+ msg->type_data.request.method != GST_RTSP_POST) {
+ msg->type_data.request.method = GST_RTSP_INVALID;
+ if (res == GST_RTSP_OK)
+ res = GST_RTSP_ERROR;
+ }
}
return res;
/* parsing lines means reading a Key: Value pair */
static GstRTSPResult
-parse_line (gchar * buffer, GstRTSPMessage * msg)
+parse_line (guint8 * buffer, GstRTSPMessage * msg)
{
- gchar key[32];
- gchar *bptr;
GstRTSPHeaderField field;
+ gchar *line = (gchar *) buffer;
+ gchar *value;
+
+ if ((value = strchr (line, ':')) == NULL || value == line)
+ goto parse_error;
+
+ /* trim space before the colon */
+ if (value[-1] == ' ')
+ value[-1] = '\0';
+
+ /* replace the colon with a NUL */
+ *value++ = '\0';
+
+ /* find the header */
+ field = gst_rtsp_find_header_field (line);
+ if (field == GST_RTSP_HDR_INVALID)
+ goto done;
+
+ /* split up the value in multiple key:value pairs if it contains comma(s) */
+ while (*value != '\0') {
+ gchar *next_value;
+ gchar *comma = NULL;
+ gboolean quoted = FALSE;
+ guint comment = 0;
+
+ /* trim leading space */
+ if (*value == ' ')
+ value++;
+
+ /* for headers which may not appear multiple times, and thus may not
+ * contain multiple values on the same line, we can short-circuit the loop
+ * below and the entire value results in just one key:value pair*/
+ if (!gst_rtsp_header_allow_multiple (field))
+ next_value = value + strlen (value);
+ else
+ next_value = value;
+
+ /* find the next value, taking special care of quotes and comments */
+ while (*next_value != '\0') {
+ if ((quoted || comment != 0) && *next_value == '\\' &&
+ next_value[1] != '\0')
+ next_value++;
+ else if (comment == 0 && *next_value == '"')
+ quoted = !quoted;
+ else if (!quoted && *next_value == '(')
+ comment++;
+ else if (comment != 0 && *next_value == ')')
+ comment--;
+ else if (!quoted && comment == 0) {
+ /* To quote RFC 2068: "User agents MUST take special care in parsing
+ * the WWW-Authenticate field value if it contains more than one
+ * challenge, or if more than one WWW-Authenticate header field is
+ * provided, since the contents of a challenge may itself contain a
+ * comma-separated list of authentication parameters."
+ *
+ * What this means is that we cannot just look for an unquoted comma
+ * when looking for multiple values in Proxy-Authenticate and
+ * WWW-Authenticate headers. Instead we need to look for the sequence
+ * "comma [space] token space token" before we can split after the
+ * comma...
+ */
+ if (field == GST_RTSP_HDR_PROXY_AUTHENTICATE ||
+ field == GST_RTSP_HDR_WWW_AUTHENTICATE) {
+ if (*next_value == ',') {
+ if (next_value[1] == ' ') {
+ /* skip any space following the comma so we do not mistake it for
+ * separating between two tokens */
+ next_value++;
+ }
+ comma = next_value;
+ } else if (*next_value == ' ' && next_value[1] != ',' &&
+ next_value[1] != '=' && comma != NULL) {
+ next_value = comma;
+ comma = NULL;
+ break;
+ }
+ } else if (*next_value == ',')
+ break;
+ }
+
+ next_value++;
+ }
- bptr = buffer;
+ /* trim space */
+ if (value != next_value && next_value[-1] == ' ')
+ next_value[-1] = '\0';
- /* read key */
- read_key (key, sizeof (key), &bptr);
- if (*bptr != ':')
- goto no_column;
+ if (*next_value != '\0')
+ *next_value++ = '\0';
- bptr++;
+ /* add the key:value pair */
+ if (*value != '\0')
+ gst_rtsp_message_add_header (msg, field, value);
- field = gst_rtsp_find_header_field (key);
- if (field != GST_RTSP_HDR_INVALID) {
- while (g_ascii_isspace (*bptr))
- bptr++;
- gst_rtsp_message_add_header (msg, field, bptr);
+ value = next_value;
}
+done:
return GST_RTSP_OK;
-no_column:
+ /* ERRORS */
+parse_error:
{
return GST_RTSP_EPARSE;
}
}
+/* convert all consecutive whitespace to a single space */
+static void
+normalize_line (guint8 * buffer)
+{
+ while (*buffer) {
+ if (g_ascii_isspace (*buffer)) {
+ guint8 *tmp;
+
+ *buffer++ = ' ';
+ for (tmp = buffer; g_ascii_isspace (*tmp); tmp++) {
+ }
+ if (buffer != tmp)
+ memmove (buffer, tmp, strlen ((gchar *) tmp) + 1);
+ } else {
+ buffer++;
+ }
+ }
+}
+
+/* returns:
+ * GST_RTSP_OK when a complete message was read.
+ * GST_RTSP_EEOF: when the read socket is closed
+ * GST_RTSP_EINTR: when more data is needed.
+ * GST_RTSP_..: some other error occured.
+ */
+static GstRTSPResult
+build_next (GstRTSPBuilder * builder, GstRTSPMessage * message,
+ GstRTSPConnection * conn)
+{
+ GstRTSPResult res;
+
+ while (TRUE) {
+ switch (builder->state) {
+ case STATE_START:
+ {
+ guint8 c;
+
+ builder->offset = 0;
+ res =
+ read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 1);
+ if (res != GST_RTSP_OK)
+ goto done;
+
+ c = builder->buffer[0];
+
+ /* we have 1 bytes now and we can see if this is a data message or
+ * not */
+ if (c == '$') {
+ /* data message, prepare for the header */
+ builder->state = STATE_DATA_HEADER;
+ } else if (c == '\n' || c == '\r') {
+ /* skip \n and \r */
+ builder->offset = 0;
+ } else {
+ builder->line = 0;
+ builder->state = STATE_READ_LINES;
+ }
+ break;
+ }
+ case STATE_DATA_HEADER:
+ {
+ res =
+ read_bytes (conn, (guint8 *) builder->buffer, &builder->offset, 4);
+ if (res != GST_RTSP_OK)
+ goto done;
+
+ gst_rtsp_message_init_data (message, builder->buffer[1]);
+
+ builder->body_len = (builder->buffer[2] << 8) | builder->buffer[3];
+ builder->body_data = g_malloc (builder->body_len + 1);
+ builder->body_data[builder->body_len] = '\0';
+ builder->offset = 0;
+ builder->state = STATE_DATA_BODY;
+ break;
+ }
+ case STATE_DATA_BODY:
+ {
+ res =
+ read_bytes (conn, builder->body_data, &builder->offset,
+ builder->body_len);
+ if (res != GST_RTSP_OK)
+ goto done;
+
+ /* we have the complete body now, store in the message adjusting the
+ * length to include the traling '\0' */
+ gst_rtsp_message_take_body (message,
+ (guint8 *) builder->body_data, builder->body_len + 1);
+ builder->body_data = NULL;
+ builder->body_len = 0;
+
+ builder->state = STATE_END;
+ break;
+ }
+ case STATE_READ_LINES:
+ {
+ res = read_line (conn, builder->buffer, &builder->offset,
+ sizeof (builder->buffer));
+ if (res != GST_RTSP_OK)
+ goto done;
+
+ /* we have a regular response */
+ if (builder->buffer[0] == '\0') {
+ gchar *hdrval;
+
+ /* empty line, end of message header */
+ /* see if there is a Content-Length header, but ignore it if this
+ * is a POST request with an x-sessioncookie header */
+ if (gst_rtsp_message_get_header (message,
+ GST_RTSP_HDR_CONTENT_LENGTH, &hdrval, 0) == GST_RTSP_OK &&
+ (message->type != GST_RTSP_MESSAGE_HTTP_REQUEST ||
+ message->type_data.request.method != GST_RTSP_POST ||
+ gst_rtsp_message_get_header (message,
+ GST_RTSP_HDR_X_SESSIONCOOKIE, NULL, 0) != GST_RTSP_OK)) {
+ /* there is, prepare to read the body */
+ builder->body_len = atol (hdrval);
+ builder->body_data = g_try_malloc (builder->body_len + 1);
+ /* we can't do much here, we need the length to know how many bytes
+ * we need to read next and when allocation fails, something is
+ * probably wrong with the length. */
+ if (builder->body_data == NULL)
+ goto invalid_body_len;
+
+ builder->body_data[builder->body_len] = '\0';
+ builder->offset = 0;
+ builder->state = STATE_DATA_BODY;
+ } else {
+ builder->state = STATE_END;
+ }
+ break;
+ }
+
+ /* we have a line */
+ normalize_line (builder->buffer);
+ if (builder->line == 0) {
+ /* first line, check for response status */
+ if (memcmp (builder->buffer, "RTSP", 4) == 0 ||
+ memcmp (builder->buffer, "HTTP", 4) == 0) {
+ builder->status = parse_response_status (builder->buffer, message);
+ } else {
+ builder->status = parse_request_line (builder->buffer, message);
+ }
+ } else {
+ /* else just parse the line */
+ res = parse_line (builder->buffer, message);
+ if (res != GST_RTSP_OK)
+ builder->status = res;
+ }
+ builder->line++;
+ builder->offset = 0;
+ break;
+ }
+ case STATE_END:
+ {
+ gchar *session_cookie;
+ gchar *session_id;
+
+ if (message->type == GST_RTSP_MESSAGE_DATA) {
+ /* data messages don't have headers */
+ res = GST_RTSP_OK;
+ goto done;
+ }
+
+ /* save the tunnel session in the connection */
+ if (message->type == GST_RTSP_MESSAGE_HTTP_REQUEST &&
+ !conn->manual_http &&
+ conn->tstate == TUNNEL_STATE_NONE &&
+ gst_rtsp_message_get_header (message, GST_RTSP_HDR_X_SESSIONCOOKIE,
+ &session_cookie, 0) == GST_RTSP_OK) {
+ strncpy (conn->tunnelid, session_cookie, TUNNELID_LEN);
+ conn->tunnelid[TUNNELID_LEN - 1] = '\0';
+ conn->tunneled = TRUE;
+ }
+
+ /* save session id in the connection for further use */
+ if (message->type == GST_RTSP_MESSAGE_RESPONSE &&
+ gst_rtsp_message_get_header (message, GST_RTSP_HDR_SESSION,
+ &session_id, 0) == GST_RTSP_OK) {
+ gint maxlen, i;
+
+ maxlen = sizeof (conn->session_id) - 1;
+ /* the sessionid can have attributes marked with ;
+ * Make sure we strip them */
+ for (i = 0; session_id[i] != '\0'; i++) {
+ if (session_id[i] == ';') {
+ maxlen = i;
+ /* parse timeout */
+ do {
+ i++;
+ } while (g_ascii_isspace (session_id[i]));
+ if (g_str_has_prefix (&session_id[i], "timeout=")) {
+ gint to;
+
+ /* if we parsed something valid, configure */
+ if ((to = atoi (&session_id[i + 8])) > 0)
+ conn->timeout = to;
+ }
+ break;
+ }
+ }
+
+ /* make sure to not overflow */
+ strncpy (conn->session_id, session_id, maxlen);
+ conn->session_id[maxlen] = '\0';
+ }
+ res = builder->status;
+ goto done;
+ }
+ default:
+ res = GST_RTSP_ERROR;
+ break;
+ }
+ }
+done:
+ return res;
+
+ /* ERRORS */
+invalid_body_len:
+ {
+ GST_DEBUG ("could not allocate body");
+ return GST_RTSP_ERROR;
+ }
+}
+
/**
- * gst_rtsp_connection_read_internal:
+ * gst_rtsp_connection_read:
* @conn: a #GstRTSPConnection
* @data: the data to read
* @size: the size of @data
* @timeout: a timeout value or #NULL
- * @allow_interrupt: can the pending read be interrupted
*
* Attempt to read @size bytes into @data from the connected @conn, blocking up to
* the specified @timeout. @timeout can be #NULL, in which case this function
* might block forever.
- *
- * This function can be cancelled with gst_rtsp_connection_flush() only if
- * @allow_interrupt is set.
+ *
+ * This function can be cancelled with gst_rtsp_connection_flush().
*
* Returns: #GST_RTSP_OK on success.
*/
-static GstRTSPResult
-gst_rtsp_connection_read_internal (GstRTSPConnection * conn, guint8 * data,
- guint size, GTimeVal * timeout, gboolean allow_interrupt)
+GstRTSPResult
+gst_rtsp_connection_read (GstRTSPConnection * conn, guint8 * data, guint size,
+ GTimeVal * timeout)
{
- guint toread;
+ guint offset;
gint retval;
GstClockTime to;
- FIONREAD_TYPE avail;
+ GstRTSPResult res;
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
g_return_val_if_fail (data != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
- if (size == 0)
+ if (G_UNLIKELY (size == 0))
return GST_RTSP_OK;
- toread = size;
+ offset = 0;
/* configure timeout if any */
to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
- /* if the call fails, just go in the select.. it should not fail. Else if
- * there is enough data to read, skip the select call al together.*/
- if (IOCTL_SOCKET (conn->fd.fd, FIONREAD, &avail) < 0)
- avail = 0;
- else if (avail >= toread)
- goto do_read;
-
- gst_poll_set_controllable (conn->fdset, allow_interrupt);
- gst_poll_fd_ctl_write (conn->fdset, &conn->fd, FALSE);
- gst_poll_fd_ctl_read (conn->fdset, &conn->fd, TRUE);
+ gst_poll_set_controllable (conn->fdset, TRUE);
+ gst_poll_fd_ctl_write (conn->fdset, conn->writefd, FALSE);
+ gst_poll_fd_ctl_read (conn->fdset, conn->readfd, TRUE);
- while (toread > 0) {
- gint bytes;
+ while (TRUE) {
+ res = read_bytes (conn, data, &offset, size);
+ if (G_UNLIKELY (res == GST_RTSP_EEOF))
+ goto eof;
+ if (G_LIKELY (res == GST_RTSP_OK))
+ break;
+ if (G_UNLIKELY (res != GST_RTSP_EINTR))
+ goto read_error;
do {
retval = gst_poll_wait (conn->fdset, to);
} while (retval == -1 && (errno == EINTR || errno == EAGAIN));
- if (retval == -1) {
+ /* check for timeout */
+ if (G_UNLIKELY (retval == 0))
+ goto select_timeout;
+
+ if (G_UNLIKELY (retval == -1)) {
if (errno == EBUSY)
goto stopped;
else
goto select_error;
}
- /* check for timeout */
- if (retval == 0)
- goto select_timeout;
+ /* could also be an error with write socket */
+ if (gst_poll_fd_has_error (conn->fdset, conn->writefd))
+ goto socket_error;
- do_read:
- /* if we get here there is activity on the real fd since the select
- * completed and the control socket was not readable. */
- bytes = READ_SOCKET (conn->fd.fd, data, toread);
- if (bytes == 0) {
- goto eof;
- } else if (bytes < 0) {
- if (ERRNO_IS_NOT_EAGAIN && ERRNO_IS_NOT_EINTR)
- goto read_error;
- } else {
- toread -= bytes;
- data += bytes;
- }
+ gst_poll_set_controllable (conn->fdset, FALSE);
}
return GST_RTSP_OK;
{
return GST_RTSP_EEOF;
}
+socket_error:
+ {
+ res = GST_RTSP_ENET;
+ }
read_error:
{
- return GST_RTSP_ESYS;
+ return res;
}
}
-/**
- * gst_rtsp_connection_read:
- * @conn: a #GstRTSPConnection
- * @data: the data to read
- * @size: the size of @data
- * @timeout: a timeout value or #NULL
- *
- * Attempt to read @size bytes into @data from the connected @conn, blocking up to
- * the specified @timeout. @timeout can be #NULL, in which case this function
- * might block forever.
- *
- * This function can be cancelled with gst_rtsp_connection_flush().
- *
- * Returns: #GST_RTSP_OK on success.
- */
-GstRTSPResult
-gst_rtsp_connection_read (GstRTSPConnection * conn, guint8 * data, guint size,
- GTimeVal * timeout)
-{
- return gst_rtsp_connection_read_internal (conn, data, size, timeout, TRUE);
-}
-
-
-static GstRTSPResult
-read_body (GstRTSPConnection * conn, glong content_length, GstRTSPMessage * msg,
- GTimeVal * timeout)
+static GstRTSPMessage *
+gen_tunnel_reply (GstRTSPConnection * conn, GstRTSPStatusCode code,
+ const GstRTSPMessage * request)
{
- guint8 *body;
+ GstRTSPMessage *msg;
GstRTSPResult res;
- if (content_length <= 0) {
- body = NULL;
- content_length = 0;
- goto done;
- }
-
- body = g_malloc (content_length + 1);
- body[content_length] = '\0';
+ if (gst_rtsp_status_as_text (code) == NULL)
+ code = GST_RTSP_STS_INTERNAL_SERVER_ERROR;
- GST_RTSP_CHECK (gst_rtsp_connection_read_internal (conn, body, content_length,
- timeout, FALSE), read_error);
+ GST_RTSP_CHECK (gst_rtsp_message_new_response (&msg, code, NULL, request),
+ no_message);
- content_length += 1;
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_SERVER,
+ "GStreamer RTSP Server");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_CONNECTION, "close");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_CACHE_CONTROL, "no-store");
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_PRAGMA, "no-cache");
-done:
- gst_rtsp_message_take_body (msg, (guint8 *) body, content_length);
+ if (code == GST_RTSP_STS_OK) {
+ if (conn->ip)
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_X_SERVER_IP_ADDRESS,
+ conn->ip);
+ gst_rtsp_message_add_header (msg, GST_RTSP_HDR_CONTENT_TYPE,
+ "application/x-rtsp-tunnelled");
+ }
- return GST_RTSP_OK;
+ return msg;
/* ERRORS */
-read_error:
+no_message:
{
- g_free (body);
- return res;
+ return NULL;
}
}
gst_rtsp_connection_receive (GstRTSPConnection * conn, GstRTSPMessage * message,
GTimeVal * timeout)
{
- gchar buffer[4096];
- gint line;
- glong content_length;
GstRTSPResult res;
- gboolean need_body;
+ GstRTSPBuilder builder;
+ gint retval;
+ GstClockTime to;
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
- line = 0;
-
- need_body = TRUE;
-
- res = GST_RTSP_OK;
- /* parse first line and headers */
- while (res == GST_RTSP_OK) {
- guint8 c;
-
- /* read first character, this identifies data messages */
- /* This is the only read() that we allow to be interrupted */
- GST_RTSP_CHECK (gst_rtsp_connection_read_internal (conn, &c, 1, timeout,
- TRUE), read_error);
-
- /* check for data packet, first character is $ */
- if (c == '$') {
- guint16 size;
-
- /* data packets are $<1 byte channel><2 bytes length,BE><data bytes> */
-
- /* read channel, which is the next char */
- GST_RTSP_CHECK (gst_rtsp_connection_read_internal (conn, &c, 1, timeout,
- FALSE), read_error);
-
- /* now we create a data message */
- gst_rtsp_message_init_data (message, c);
+ /* configure timeout if any */
+ to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
- /* next two bytes are the length of the data */
- GST_RTSP_CHECK (gst_rtsp_connection_read_internal (conn,
- (guint8 *) & size, 2, timeout, FALSE), read_error);
+ gst_poll_set_controllable (conn->fdset, TRUE);
+ gst_poll_fd_ctl_write (conn->fdset, conn->writefd, FALSE);
+ gst_poll_fd_ctl_read (conn->fdset, conn->readfd, TRUE);
- size = GUINT16_FROM_BE (size);
+ memset (&builder, 0, sizeof (GstRTSPBuilder));
+ while (TRUE) {
+ res = build_next (&builder, message, conn);
+ if (G_UNLIKELY (res == GST_RTSP_EEOF))
+ goto eof;
+ else if (G_LIKELY (res == GST_RTSP_OK)) {
+ if (!conn->manual_http) {
+ if (message->type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
+ if (conn->tstate == TUNNEL_STATE_NONE &&
+ message->type_data.request.method == GST_RTSP_GET) {
+ GstRTSPMessage *response;
+
+ conn->tstate = TUNNEL_STATE_GET;
+
+ /* tunnel GET request, we can reply now */
+ response = gen_tunnel_reply (conn, GST_RTSP_STS_OK, message);
+ res = gst_rtsp_connection_send (conn, response, timeout);
+ gst_rtsp_message_free (response);
+ if (res == GST_RTSP_OK)
+ res = GST_RTSP_ETGET;
+ goto cleanup;
+ } else if (conn->tstate == TUNNEL_STATE_NONE &&
+ message->type_data.request.method == GST_RTSP_POST) {
+ conn->tstate = TUNNEL_STATE_POST;
+
+ /* tunnel POST request, the caller now has to link the two
+ * connections. */
+ res = GST_RTSP_ETPOST;
+ goto cleanup;
+ } else {
+ res = GST_RTSP_EPARSE;
+ goto cleanup;
+ }
+ } else if (message->type == GST_RTSP_MESSAGE_HTTP_RESPONSE) {
+ res = GST_RTSP_EPARSE;
+ goto cleanup;
+ }
+ }
- /* and read the body */
- res = read_body (conn, size, message, timeout);
- need_body = FALSE;
break;
- } else {
- gint offset = 0;
-
- /* we have a regular response */
- if (c != '\r') {
- buffer[0] = c;
- offset = 1;
- }
- /* should not happen */
- if (c == '\n')
- break;
+ } else if (G_UNLIKELY (res != GST_RTSP_EINTR))
+ goto read_error;
- /* read lines */
- GST_RTSP_CHECK (read_line (conn->fd.fd, buffer + offset,
- sizeof (buffer) - offset), read_error);
+ do {
+ retval = gst_poll_wait (conn->fdset, to);
+ } while (retval == -1 && (errno == EINTR || errno == EAGAIN));
- if (buffer[0] == '\0')
- break;
+ /* check for timeout */
+ if (G_UNLIKELY (retval == 0))
+ goto select_timeout;
- if (line == 0) {
- /* first line, check for response status */
- if (g_str_has_prefix (buffer, "RTSP")) {
- res = parse_response_status (buffer, message);
- } else {
- res = parse_request_line (buffer, message);
- }
- } else {
- /* else just parse the line */
- parse_line (buffer, message);
- }
+ if (G_UNLIKELY (retval == -1)) {
+ if (errno == EBUSY)
+ goto stopped;
+ else
+ goto select_error;
}
- line++;
- }
- /* read the rest of the body if needed */
- if (need_body) {
- gchar *session_id;
- gchar *hdrval;
+ /* could also be an error with write socket */
+ if (gst_poll_fd_has_error (conn->fdset, conn->writefd))
+ goto socket_error;
- /* see if there is a Content-Length header */
- if (gst_rtsp_message_get_header (message, GST_RTSP_HDR_CONTENT_LENGTH,
- &hdrval, 0) == GST_RTSP_OK) {
- /* there is, read the body */
- content_length = atol (hdrval);
- GST_RTSP_CHECK (read_body (conn, content_length, message, timeout),
- read_error);
- }
+ /* once we start reading the wait cannot be controlled */
+ if (builder.state != STATE_START)
+ gst_poll_set_controllable (conn->fdset, FALSE);
+ }
- /* save session id in the connection for further use */
- if (gst_rtsp_message_get_header (message, GST_RTSP_HDR_SESSION,
- &session_id, 0) == GST_RTSP_OK) {
- gint maxlen, i;
-
- /* default session timeout */
- conn->timeout = 60;
-
- maxlen = sizeof (conn->session_id) - 1;
- /* the sessionid can have attributes marked with ;
- * Make sure we strip them */
- for (i = 0; session_id[i] != '\0'; i++) {
- if (session_id[i] == ';') {
- maxlen = i;
- /* parse timeout */
- do {
- i++;
- } while (g_ascii_isspace (session_id[i]));
- if (g_str_has_prefix (&session_id[i], "timeout=")) {
- gint to;
-
- /* if we parsed something valid, configure */
- if ((to = atoi (&session_id[i + 9])) > 0)
- conn->timeout = to;
- }
- break;
- }
- }
+ /* we have a message here */
+ build_reset (&builder);
- /* make sure to not overflow */
- strncpy (conn->session_id, session_id, maxlen);
- conn->session_id[maxlen] = '\0';
- }
- }
- return res;
+ return GST_RTSP_OK;
-read_error:
+ /* ERRORS */
+select_error:
{
- return res;
+ res = GST_RTSP_ESYS;
+ goto cleanup;
}
-}
-
+select_timeout:
+ {
+ res = GST_RTSP_ETIMEOUT;
+ goto cleanup;
+ }
+stopped:
+ {
+ res = GST_RTSP_EINTR;
+ goto cleanup;
+ }
+eof:
+ {
+ res = GST_RTSP_EEOF;
+ goto cleanup;
+ }
+socket_error:
+ {
+ res = GST_RTSP_ENET;
+ goto cleanup;
+ }
+read_error:
+cleanup:
+ {
+ build_reset (&builder);
+ gst_rtsp_message_unset (message);
+ return res;
+ }
+}
+
/**
* gst_rtsp_connection_close:
* @conn: a #GstRTSPConnection
*
- * Close the connected @conn.
+ * Close the connected @conn. After this call, the connection is in the same
+ * state as when it was first created.
*
* Returns: #GST_RTSP_OK on success.
*/
GstRTSPResult
gst_rtsp_connection_close (GstRTSPConnection * conn)
{
- gint res;
-
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
g_free (conn->ip);
conn->ip = NULL;
- if (conn->fd.fd != -1) {
- gst_poll_remove_fd (conn->fdset, &conn->fd);
- res = CLOSE_SOCKET (conn->fd.fd);
- conn->fd.fd = -1;
-#ifdef G_OS_WIN32
- WSACleanup ();
-#endif
- if (res != 0)
- goto sys_error;
- }
+ conn->read_ahead = 0;
- return GST_RTSP_OK;
+ g_free (conn->initial_buffer);
+ conn->initial_buffer = NULL;
+ conn->initial_buffer_offset = 0;
-sys_error:
- {
- return GST_RTSP_ESYS;
- }
+ REMOVE_POLLFD (conn->fdset, &conn->fd0);
+ REMOVE_POLLFD (conn->fdset, &conn->fd1);
+ conn->writefd = NULL;
+ conn->readfd = NULL;
+ conn->tunneled = FALSE;
+ conn->tstate = TUNNEL_STATE_NONE;
+ conn->ctxp = NULL;
+ g_free (conn->username);
+ conn->username = NULL;
+ g_free (conn->passwd);
+ conn->passwd = NULL;
+ gst_rtsp_connection_clear_auth_params (conn);
+ conn->timeout = 60;
+ conn->cseq = 0;
+ conn->session_id[0] = '\0';
+
+ return GST_RTSP_OK;
}
/**
res = gst_rtsp_connection_close (conn);
gst_poll_free (conn->fdset);
+ g_timer_destroy (conn->timer);
+ gst_rtsp_url_free (conn->url);
+ g_free (conn->proxy_host);
+ g_free (conn);
#ifdef G_OS_WIN32
WSACleanup ();
#endif
- g_timer_destroy (conn->timer);
- g_free (conn->username);
- g_free (conn->passwd);
- gst_rtsp_connection_clear_auth_params (conn);
- g_free (conn);
return res;
}
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
g_return_val_if_fail (events != 0, GST_RTSP_EINVAL);
g_return_val_if_fail (revents != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->writefd != NULL, GST_RTSP_EINVAL);
gst_poll_set_controllable (conn->fdset, TRUE);
/* add fd to writer set when asked to */
- gst_poll_fd_ctl_write (conn->fdset, &conn->fd, events & GST_RTSP_EV_WRITE);
+ gst_poll_fd_ctl_write (conn->fdset, conn->writefd,
+ events & GST_RTSP_EV_WRITE);
/* add fd to reader set when asked to */
- gst_poll_fd_ctl_read (conn->fdset, &conn->fd, events & GST_RTSP_EV_READ);
+ gst_poll_fd_ctl_read (conn->fdset, conn->readfd, events & GST_RTSP_EV_READ);
/* configure timeout if any */
to = timeout ? GST_TIMEVAL_TO_TIME (*timeout) : GST_CLOCK_TIME_NONE;
retval = gst_poll_wait (conn->fdset, to);
} while (retval == -1 && (errno == EINTR || errno == EAGAIN));
- if (retval == 0)
+ if (G_UNLIKELY (retval == 0))
goto select_timeout;
- if (retval == -1) {
+ if (G_UNLIKELY (retval == -1)) {
if (errno == EBUSY)
goto stopped;
else
*revents = 0;
if (events & GST_RTSP_EV_READ) {
- if (gst_poll_fd_can_read (conn->fdset, &conn->fd))
+ if (gst_poll_fd_can_read (conn->fdset, conn->readfd))
*revents |= GST_RTSP_EV_READ;
}
if (events & GST_RTSP_EV_WRITE) {
- if (gst_poll_fd_can_write (conn->fdset, &conn->fd))
+ if (gst_poll_fd_can_write (conn->fdset, conn->writefd))
*revents |= GST_RTSP_EV_WRITE;
}
return GST_RTSP_OK;
* @timeout: a timeout
*
* Calculate the next timeout for @conn, storing the result in @timeout.
- *
+ *
* Returns: #GST_RTSP_OK.
*/
GstRTSPResult
gdouble elapsed;
glong sec;
gulong usec;
+ gint ctimeout;
g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
g_return_val_if_fail (timeout != NULL, GST_RTSP_EINVAL);
+ ctimeout = conn->timeout;
+ if (ctimeout >= 20) {
+ /* Because we should act before the timeout we timeout 5
+ * seconds in advance. */
+ ctimeout -= 5;
+ } else if (ctimeout >= 5) {
+ /* else timeout 20% earlier */
+ ctimeout -= ctimeout / 5;
+ } else if (ctimeout >= 1) {
+ /* else timeout 1 second earlier */
+ ctimeout -= 1;
+ }
+
elapsed = g_timer_elapsed (conn->timer, &usec);
- if (elapsed >= conn->timeout) {
+ if (elapsed >= ctimeout) {
sec = 0;
usec = 0;
} else {
- sec = conn->timeout - elapsed;
+ sec = ctimeout - elapsed;
+ if (usec <= G_USEC_PER_SEC)
+ usec = G_USEC_PER_SEC - usec;
+ else
+ usec = 0;
}
timeout->tv_sec = sec;
* @conn: a #GstRTSPConnection
*
* Reset the timeout of @conn.
- *
+ *
* Returns: #GST_RTSP_OK.
*/
GstRTSPResult
}
/**
+ * gst_rtsp_connection_set_proxy:
+ * @conn: a #GstRTSPConnection
+ * @host: the proxy host
+ * @port: the proxy port
+ *
+ * Set the proxy host and port.
+ *
+ * Returns: #GST_RTSP_OK.
+ *
+ * Since: 0.10.23
+ */
+GstRTSPResult
+gst_rtsp_connection_set_proxy (GstRTSPConnection * conn,
+ const gchar * host, guint port)
+{
+ g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+
+ g_free (conn->proxy_host);
+ conn->proxy_host = g_strdup (host);
+ conn->proxy_port = port;
+
+ return GST_RTSP_OK;
+}
+
+/**
* gst_rtsp_connection_set_auth:
* @conn: a #GstRTSPConnection
* @method: authentication method
}
}
-/**
- * gst_rtsp_connection_set_qos_dscp:
- * @conn: a #GstRTSPConnection
- * @qos_dscp: DSCP value
- *
- * Configure @conn to use the specified DSCP value.
- *
- * Returns: #GST_RTSP_OK on success.
- *
- * Since: 0.10.20
- */
-GstRTSPResult
-gst_rtsp_connection_set_qos_dscp (GstRTSPConnection * conn, guint qos_dscp)
+static GstRTSPResult
+set_qos_dscp (gint fd, guint qos_dscp)
{
- struct sockaddr_storage sa_s;
- socklen_t sa_sl = sizeof (sa_s);
+ union gst_sockaddr sa;
+ socklen_t slen = sizeof (sa);
gint af;
gint tos;
- g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
- g_return_val_if_fail (conn->fd.fd >= 0, GST_RTSP_EINVAL);
+ if (fd == -1)
+ return GST_RTSP_OK;
- if (getsockname (conn->fd.fd, (struct sockaddr *) &sa_s, &sa_sl) < 0)
+ if (getsockname (fd, &sa.sa, &slen) < 0)
goto no_getsockname;
- af = sa_s.ss_family;
+ af = sa.sa.sa_family;
/* if this is an IPv4-mapped address then do IPv4 QoS */
if (af == AF_INET6) {
- struct sockaddr_in6 *saddr6 = (struct sockaddr_in6 *) &sa_s;
-
- if (IN6_IS_ADDR_V4MAPPED (&saddr6->sin6_addr))
+ if (IN6_IS_ADDR_V4MAPPED (&sa.sa_in6.sin6_addr))
af = AF_INET;
}
switch (af) {
case AF_INET:
- if (SETSOCKOPT (conn->fd.fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos)) < 0)
+ if (SETSOCKOPT (fd, IPPROTO_IP, IP_TOS, &tos, sizeof (tos)) < 0)
goto no_setsockopt;
break;
case AF_INET6:
#ifdef IPV6_TCLASS
- if (SETSOCKOPT (conn->fd.fd, IPPROTO_IPV6, IPV6_TCLASS, &tos,
- sizeof (tos)) < 0)
+ if (SETSOCKOPT (fd, IPPROTO_IPV6, IPV6_TCLASS, &tos, sizeof (tos)) < 0)
goto no_setsockopt;
break;
#endif
}
/**
+ * gst_rtsp_connection_set_qos_dscp:
+ * @conn: a #GstRTSPConnection
+ * @qos_dscp: DSCP value
+ *
+ * Configure @conn to use the specified DSCP value.
+ *
+ * Returns: #GST_RTSP_OK on success.
+ *
+ * Since: 0.10.20
+ */
+GstRTSPResult
+gst_rtsp_connection_set_qos_dscp (GstRTSPConnection * conn, guint qos_dscp)
+{
+ GstRTSPResult res;
+
+ g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->readfd != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn->writefd != NULL, GST_RTSP_EINVAL);
+
+ res = set_qos_dscp (conn->fd0.fd, qos_dscp);
+ if (res == GST_RTSP_OK)
+ res = set_qos_dscp (conn->fd1.fd, qos_dscp);
+
+ return res;
+}
+
+
+/**
+ * gst_rtsp_connection_get_url:
+ * @conn: a #GstRTSPConnection
+ *
+ * Retrieve the URL of the other end of @conn.
+ *
+ * Returns: The URL. This value remains valid until the
+ * connection is freed.
+ *
+ * Since: 0.10.23
+ */
+GstRTSPUrl *
+gst_rtsp_connection_get_url (const GstRTSPConnection * conn)
+{
+ g_return_val_if_fail (conn != NULL, NULL);
+
+ return conn->url;
+}
+
+/**
* gst_rtsp_connection_get_ip:
* @conn: a #GstRTSPConnection
*
* Retrieve the IP address of the other end of @conn.
*
- * Returns: The IP address as a string.
+ * Returns: The IP address as a string. this value remains valid until the
+ * connection is closed.
*
* Since: 0.10.20
*/
return conn->ip;
}
+
+/**
+ * gst_rtsp_connection_set_ip:
+ * @conn: a #GstRTSPConnection
+ * @ip: an ip address
+ *
+ * Set the IP address of the server.
+ *
+ * Since: 0.10.23
+ */
+void
+gst_rtsp_connection_set_ip (GstRTSPConnection * conn, const gchar * ip)
+{
+ g_return_if_fail (conn != NULL);
+
+ g_free (conn->ip);
+ conn->ip = g_strdup (ip);
+}
+
+/**
+ * gst_rtsp_connection_get_readfd:
+ * @conn: a #GstRTSPConnection
+ *
+ * Get the file descriptor for reading.
+ *
+ * Returns: the file descriptor used for reading or -1 on error. The file
+ * descriptor remains valid until the connection is closed.
+ *
+ * Since: 0.10.23
+ */
+gint
+gst_rtsp_connection_get_readfd (const GstRTSPConnection * conn)
+{
+ g_return_val_if_fail (conn != NULL, -1);
+ g_return_val_if_fail (conn->readfd != NULL, -1);
+
+ return conn->readfd->fd;
+}
+
+/**
+ * gst_rtsp_connection_get_writefd:
+ * @conn: a #GstRTSPConnection
+ *
+ * Get the file descriptor for writing.
+ *
+ * Returns: the file descriptor used for writing or -1 on error. The file
+ * descriptor remains valid until the connection is closed.
+ *
+ * Since: 0.10.23
+ */
+gint
+gst_rtsp_connection_get_writefd (const GstRTSPConnection * conn)
+{
+ g_return_val_if_fail (conn != NULL, -1);
+ g_return_val_if_fail (conn->writefd != NULL, -1);
+
+ return conn->writefd->fd;
+}
+
+/**
+ * gst_rtsp_connection_set_http_mode:
+ * @conn: a #GstRTSPConnection
+ * @enable: %TRUE to enable manual HTTP mode
+ *
+ * By setting the HTTP mode to %TRUE the message parsing will support HTTP
+ * messages in addition to the RTSP messages. It will also disable the
+ * automatic handling of setting up an HTTP tunnel.
+ *
+ * Since: 0.10.25
+ */
+void
+gst_rtsp_connection_set_http_mode (GstRTSPConnection * conn, gboolean enable)
+{
+ g_return_if_fail (conn != NULL);
+
+ conn->manual_http = enable;
+}
+
+/**
+ * gst_rtsp_connection_set_tunneled:
+ * @conn: a #GstRTSPConnection
+ * @tunneled: the new state
+ *
+ * Set the HTTP tunneling state of the connection. This must be configured before
+ * the @conn is connected.
+ *
+ * Since: 0.10.23
+ */
+void
+gst_rtsp_connection_set_tunneled (GstRTSPConnection * conn, gboolean tunneled)
+{
+ g_return_if_fail (conn != NULL);
+ g_return_if_fail (conn->readfd == NULL);
+ g_return_if_fail (conn->writefd == NULL);
+
+ conn->tunneled = tunneled;
+}
+
+/**
+ * gst_rtsp_connection_is_tunneled:
+ * @conn: a #GstRTSPConnection
+ *
+ * Get the tunneling state of the connection.
+ *
+ * Returns: if @conn is using HTTP tunneling.
+ *
+ * Since: 0.10.23
+ */
+gboolean
+gst_rtsp_connection_is_tunneled (const GstRTSPConnection * conn)
+{
+ g_return_val_if_fail (conn != NULL, FALSE);
+
+ return conn->tunneled;
+}
+
+/**
+ * gst_rtsp_connection_get_tunnelid:
+ * @conn: a #GstRTSPConnection
+ *
+ * Get the tunnel session id the connection.
+ *
+ * Returns: returns a non-empty string if @conn is being tunneled over HTTP.
+ *
+ * Since: 0.10.23
+ */
+const gchar *
+gst_rtsp_connection_get_tunnelid (const GstRTSPConnection * conn)
+{
+ g_return_val_if_fail (conn != NULL, NULL);
+
+ if (!conn->tunneled)
+ return NULL;
+
+ return conn->tunnelid;
+}
+
+/**
+ * gst_rtsp_connection_do_tunnel:
+ * @conn: a #GstRTSPConnection
+ * @conn2: a #GstRTSPConnection or %NULL
+ *
+ * If @conn received the first tunnel connection and @conn2 received
+ * the second tunnel connection, link the two connections together so that
+ * @conn manages the tunneled connection.
+ *
+ * After this call, @conn2 cannot be used anymore and must be freed with
+ * gst_rtsp_connection_free().
+ *
+ * If @conn2 is %NULL then only the base64 decoding context will be setup for
+ * @conn.
+ *
+ * Returns: return GST_RTSP_OK on success.
+ *
+ * Since: 0.10.23
+ */
+GstRTSPResult
+gst_rtsp_connection_do_tunnel (GstRTSPConnection * conn,
+ GstRTSPConnection * conn2)
+{
+ g_return_val_if_fail (conn != NULL, GST_RTSP_EINVAL);
+
+ if (conn2 != NULL) {
+ g_return_val_if_fail (conn->tstate == TUNNEL_STATE_GET, GST_RTSP_EINVAL);
+ g_return_val_if_fail (conn2->tstate == TUNNEL_STATE_POST, GST_RTSP_EINVAL);
+ g_return_val_if_fail (!memcmp (conn2->tunnelid, conn->tunnelid,
+ TUNNELID_LEN), GST_RTSP_EINVAL);
+
+ /* both connections have fd0 as the read/write socket. start by taking the
+ * socket from conn2 and set it as the socket in conn */
+ conn->fd1 = conn2->fd0;
+
+ /* clean up some of the state of conn2 */
+ gst_poll_remove_fd (conn2->fdset, &conn2->fd0);
+ conn2->fd0.fd = -1;
+ conn2->readfd = conn2->writefd = NULL;
+
+ /* We make fd0 the write socket and fd1 the read socket. */
+ conn->writefd = &conn->fd0;
+ conn->readfd = &conn->fd1;
+
+ conn->tstate = TUNNEL_STATE_COMPLETE;
+ }
+
+ /* we need base64 decoding for the readfd */
+ conn->ctx.state = 0;
+ conn->ctx.save = 0;
+ conn->ctx.cout = 0;
+ conn->ctx.coutl = 0;
+ conn->ctxp = &conn->ctx;
+
+ return GST_RTSP_OK;
+}
+
+#define READ_ERR (G_IO_HUP | G_IO_ERR | G_IO_NVAL)
+#define READ_COND (G_IO_IN | READ_ERR)
+#define WRITE_ERR (G_IO_HUP | G_IO_ERR | G_IO_NVAL)
+#define WRITE_COND (G_IO_OUT | WRITE_ERR)
+
+typedef struct
+{
+ guint8 *data;
+ guint size;
+ guint id;
+} GstRTSPRec;
+
+/* async functions */
+struct _GstRTSPWatch
+{
+ GSource source;
+
+ GstRTSPConnection *conn;
+
+ GstRTSPBuilder builder;
+ GstRTSPMessage message;
+
+ GPollFD readfd;
+ GPollFD writefd;
+
+ /* queued message for transmission */
+ guint id;
+ GMutex *mutex;
+ GQueue *messages;
+ guint8 *write_data;
+ guint write_off;
+ guint write_size;
+ guint write_id;
+
+ GstRTSPWatchFuncs funcs;
+
+ gpointer user_data;
+ GDestroyNotify notify;
+};
+
+static gboolean
+gst_rtsp_source_prepare (GSource * source, gint * timeout)
+{
+ GstRTSPWatch *watch = (GstRTSPWatch *) source;
+
+ if (watch->conn->initial_buffer != NULL)
+ return TRUE;
+
+ *timeout = (watch->conn->timeout * 1000);
+
+ return FALSE;
+}
+
+static gboolean
+gst_rtsp_source_check (GSource * source)
+{
+ GstRTSPWatch *watch = (GstRTSPWatch *) source;
+
+ if (watch->readfd.revents & READ_COND)
+ return TRUE;
+
+ if (watch->writefd.revents & WRITE_COND)
+ return TRUE;
+
+ return FALSE;
+}
+
+static gboolean
+gst_rtsp_source_dispatch (GSource * source, GSourceFunc callback G_GNUC_UNUSED,
+ gpointer user_data G_GNUC_UNUSED)
+{
+ GstRTSPWatch *watch = (GstRTSPWatch *) source;
+ GstRTSPResult res = GST_RTSP_ERROR;
+ gboolean keep_running = TRUE;
+
+ /* first read as much as we can */
+ if (watch->readfd.revents & READ_COND || watch->conn->initial_buffer != NULL) {
+ do {
+ if (watch->readfd.revents & READ_ERR)
+ goto read_error;
+
+ res = build_next (&watch->builder, &watch->message, watch->conn);
+ if (res == GST_RTSP_EINTR)
+ break;
+ else if (G_UNLIKELY (res == GST_RTSP_EEOF)) {
+ watch->readfd.events = 0;
+ watch->readfd.revents = 0;
+ g_source_remove_poll ((GSource *) watch, &watch->readfd);
+ /* When we are in tunnelled mode, the read socket can be closed and we
+ * should be prepared for a new POST method to reopen it */
+ if (watch->conn->tstate == TUNNEL_STATE_COMPLETE) {
+ /* remove the read connection for the tunnel */
+ /* we accept a new POST request */
+ watch->conn->tstate = TUNNEL_STATE_GET;
+ /* and signal that we lost our tunnel */
+ if (watch->funcs.tunnel_lost)
+ res = watch->funcs.tunnel_lost (watch, watch->user_data);
+ goto read_done;
+ } else
+ goto eof;
+ } else if (G_LIKELY (res == GST_RTSP_OK)) {
+ if (!watch->conn->manual_http &&
+ watch->message.type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
+ if (watch->conn->tstate == TUNNEL_STATE_NONE &&
+ watch->message.type_data.request.method == GST_RTSP_GET) {
+ GstRTSPMessage *response;
+ GstRTSPStatusCode code;
+
+ watch->conn->tstate = TUNNEL_STATE_GET;
+
+ if (watch->funcs.tunnel_start)
+ code = watch->funcs.tunnel_start (watch, watch->user_data);
+ else
+ code = GST_RTSP_STS_OK;
+
+ /* queue the response */
+ response = gen_tunnel_reply (watch->conn, code, &watch->message);
+ gst_rtsp_watch_send_message (watch, response, NULL);
+ gst_rtsp_message_free (response);
+ goto read_done;
+ } else if (watch->conn->tstate == TUNNEL_STATE_NONE &&
+ watch->message.type_data.request.method == GST_RTSP_POST) {
+ watch->conn->tstate = TUNNEL_STATE_POST;
+
+ /* in the callback the connection should be tunneled with the
+ * GET connection */
+ if (watch->funcs.tunnel_complete)
+ watch->funcs.tunnel_complete (watch, watch->user_data);
+ goto read_done;
+ }
+ }
+ }
+
+ if (!watch->conn->manual_http) {
+ /* if manual HTTP support is not enabled, then restore the message to
+ * what it would have looked like without the support for parsing HTTP
+ * messages being present */
+ if (watch->message.type == GST_RTSP_MESSAGE_HTTP_REQUEST) {
+ watch->message.type = GST_RTSP_MESSAGE_REQUEST;
+ watch->message.type_data.request.method = GST_RTSP_INVALID;
+ if (watch->message.type_data.request.version != GST_RTSP_VERSION_1_0)
+ watch->message.type_data.request.version = GST_RTSP_VERSION_INVALID;
+ res = GST_RTSP_EPARSE;
+ } else if (watch->message.type == GST_RTSP_MESSAGE_HTTP_RESPONSE) {
+ watch->message.type = GST_RTSP_MESSAGE_RESPONSE;
+ if (watch->message.type_data.response.version != GST_RTSP_VERSION_1_0)
+ watch->message.type_data.response.version =
+ GST_RTSP_VERSION_INVALID;
+ res = GST_RTSP_EPARSE;
+ }
+ }
+
+ if (G_LIKELY (res == GST_RTSP_OK)) {
+ if (watch->funcs.message_received)
+ watch->funcs.message_received (watch, &watch->message,
+ watch->user_data);
+ } else {
+ goto read_error;
+ }
+
+ read_done:
+ gst_rtsp_message_unset (&watch->message);
+ build_reset (&watch->builder);
+ } while (FALSE);
+ }
+
+ if (watch->writefd.revents & WRITE_COND) {
+ if (watch->writefd.revents & WRITE_ERR)
+ goto write_error;
+
+ g_mutex_lock (watch->mutex);
+ do {
+ if (watch->write_data == NULL) {
+ GstRTSPRec *rec;
+
+ /* get a new message from the queue */
+ rec = g_queue_pop_tail (watch->messages);
+ if (rec == NULL)
+ break;
+
+ watch->write_off = 0;
+ watch->write_data = rec->data;
+ watch->write_size = rec->size;
+ watch->write_id = rec->id;
+
+ g_slice_free (GstRTSPRec, rec);
+ }
+
+ res = write_bytes (watch->writefd.fd, watch->write_data,
+ &watch->write_off, watch->write_size);
+ g_mutex_unlock (watch->mutex);
+
+ if (res == GST_RTSP_EINTR)
+ goto write_blocked;
+ else if (G_LIKELY (res == GST_RTSP_OK)) {
+ if (watch->funcs.message_sent)
+ watch->funcs.message_sent (watch, watch->write_id, watch->user_data);
+ } else {
+ goto write_error;
+ }
+ g_mutex_lock (watch->mutex);
+
+ g_free (watch->write_data);
+ watch->write_data = NULL;
+ } while (TRUE);
+
+ watch->writefd.events = WRITE_ERR;
+
+ g_mutex_unlock (watch->mutex);
+ }
+
+write_blocked:
+ return keep_running;
+
+ /* ERRORS */
+eof:
+ {
+ if (watch->funcs.closed)
+ watch->funcs.closed (watch, watch->user_data);
+
+ /* always stop when the readfd returns EOF in non-tunneled mode */
+ return FALSE;
+ }
+read_error:
+ {
+ watch->readfd.events = 0;
+ watch->readfd.revents = 0;
+ g_source_remove_poll ((GSource *) watch, &watch->readfd);
+ keep_running = (watch->writefd.events != 0);
+
+ if (keep_running) {
+ if (watch->funcs.error_full)
+ GST_RTSP_CHECK (watch->funcs.error_full (watch, res, &watch->message,
+ 0, watch->user_data), error);
+ else
+ goto error;
+ } else
+ goto eof;
+ }
+write_error:
+ {
+ watch->writefd.events = 0;
+ watch->writefd.revents = 0;
+ g_source_remove_poll ((GSource *) watch, &watch->writefd);
+ keep_running = (watch->readfd.events != 0);
+
+ if (keep_running) {
+ if (watch->funcs.error_full)
+ GST_RTSP_CHECK (watch->funcs.error_full (watch, res, NULL,
+ watch->write_id, watch->user_data), error);
+ else
+ goto error;
+ } else
+ goto eof;
+ }
+error:
+ {
+ if (watch->funcs.error)
+ watch->funcs.error (watch, res, watch->user_data);
+
+ return keep_running;
+ }
+}
+
+static void
+gst_rtsp_rec_free (gpointer data)
+{
+ GstRTSPRec *rec = data;
+
+ g_free (rec->data);
+ g_slice_free (GstRTSPRec, rec);
+}
+
+static void
+gst_rtsp_source_finalize (GSource * source)
+{
+ GstRTSPWatch *watch = (GstRTSPWatch *) source;
+
+ build_reset (&watch->builder);
+ gst_rtsp_message_unset (&watch->message);
+
+ g_queue_foreach (watch->messages, (GFunc) gst_rtsp_rec_free, NULL);
+ g_queue_free (watch->messages);
+ watch->messages = NULL;
+ g_free (watch->write_data);
+
+ g_mutex_free (watch->mutex);
+
+ if (watch->notify)
+ watch->notify (watch->user_data);
+}
+
+static GSourceFuncs gst_rtsp_source_funcs = {
+ gst_rtsp_source_prepare,
+ gst_rtsp_source_check,
+ gst_rtsp_source_dispatch,
+ gst_rtsp_source_finalize,
+ NULL,
+ NULL
+};
+
+/**
+ * gst_rtsp_watch_new:
+ * @conn: a #GstRTSPConnection
+ * @funcs: watch functions
+ * @user_data: user data to pass to @funcs
+ * @notify: notify when @user_data is not referenced anymore
+ *
+ * Create a watch object for @conn. The functions provided in @funcs will be
+ * called with @user_data when activity happened on the watch.
+ *
+ * The new watch is usually created so that it can be attached to a
+ * maincontext with gst_rtsp_watch_attach().
+ *
+ * @conn must exist for the entire lifetime of the watch.
+ *
+ * Returns: a #GstRTSPWatch that can be used for asynchronous RTSP
+ * communication. Free with gst_rtsp_watch_unref () after usage.
+ *
+ * Since: 0.10.23
+ */
+GstRTSPWatch *
+gst_rtsp_watch_new (GstRTSPConnection * conn,
+ GstRTSPWatchFuncs * funcs, gpointer user_data, GDestroyNotify notify)
+{
+ GstRTSPWatch *result;
+
+ g_return_val_if_fail (conn != NULL, NULL);
+ g_return_val_if_fail (funcs != NULL, NULL);
+ g_return_val_if_fail (conn->readfd != NULL, NULL);
+ g_return_val_if_fail (conn->writefd != NULL, NULL);
+
+ result = (GstRTSPWatch *) g_source_new (&gst_rtsp_source_funcs,
+ sizeof (GstRTSPWatch));
+
+ result->conn = conn;
+ result->builder.state = STATE_START;
+
+ result->mutex = g_mutex_new ();
+ result->messages = g_queue_new ();
+
+ result->readfd.fd = -1;
+ result->writefd.fd = -1;
+
+ gst_rtsp_watch_reset (result);
+
+ result->funcs = *funcs;
+ result->user_data = user_data;
+ result->notify = notify;
+
+ return result;
+}
+
+/**
+ * gst_rtsp_watch_reset:
+ * @watch: a #GstRTSPWatch
+ *
+ * Reset @watch, this is usually called after gst_rtsp_connection_do_tunnel()
+ * when the file descriptors of the connection might have changed.
+ *
+ * Since: 0.10.23
+ */
+void
+gst_rtsp_watch_reset (GstRTSPWatch * watch)
+{
+ if (watch->readfd.fd != -1)
+ g_source_remove_poll ((GSource *) watch, &watch->readfd);
+ if (watch->writefd.fd != -1)
+ g_source_remove_poll ((GSource *) watch, &watch->writefd);
+
+ watch->readfd.fd = watch->conn->readfd->fd;
+ watch->readfd.events = READ_COND;
+ watch->readfd.revents = 0;
+
+ watch->writefd.fd = watch->conn->writefd->fd;
+ watch->writefd.events = WRITE_ERR;
+ watch->writefd.revents = 0;
+
+ if (watch->readfd.fd != -1)
+ g_source_add_poll ((GSource *) watch, &watch->readfd);
+ if (watch->writefd.fd != -1)
+ g_source_add_poll ((GSource *) watch, &watch->writefd);
+}
+
+/**
+ * gst_rtsp_watch_attach:
+ * @watch: a #GstRTSPWatch
+ * @context: a GMainContext (if NULL, the default context will be used)
+ *
+ * Adds a #GstRTSPWatch to a context so that it will be executed within that context.
+ *
+ * Returns: the ID (greater than 0) for the watch within the GMainContext.
+ *
+ * Since: 0.10.23
+ */
+guint
+gst_rtsp_watch_attach (GstRTSPWatch * watch, GMainContext * context)
+{
+ g_return_val_if_fail (watch != NULL, 0);
+
+ return g_source_attach ((GSource *) watch, context);
+}
+
+/**
+ * gst_rtsp_watch_unref:
+ * @watch: a #GstRTSPWatch
+ *
+ * Decreases the reference count of @watch by one. If the resulting reference
+ * count is zero the watch and associated memory will be destroyed.
+ *
+ * Since: 0.10.23
+ */
+void
+gst_rtsp_watch_unref (GstRTSPWatch * watch)
+{
+ g_return_if_fail (watch != NULL);
+
+ g_source_unref ((GSource *) watch);
+}
+
+/**
+ * gst_rtsp_watch_write_data:
+ * @watch: a #GstRTSPWatch
+ * @data: the data to queue
+ * @size: the size of @data
+ * @id: location for a message ID or %NULL
+ *
+ * Write @data using the connection of the @watch. If it cannot be sent
+ * immediately, it will be queued for transmission in @watch. The contents of
+ * @message will then be serialized and transmitted when the connection of the
+ * @watch becomes writable. In case the @message is queued, the ID returned in
+ * @id will be non-zero and used as the ID argument in the message_sent
+ * callback.
+ *
+ * This function will take ownership of @data and g_free() it after use.
+ *
+ * Returns: #GST_RTSP_OK on success.
+ *
+ * Since: 0.10.25
+ */
+GstRTSPResult
+gst_rtsp_watch_write_data (GstRTSPWatch * watch, const guint8 * data,
+ guint size, guint * id)
+{
+ GstRTSPResult res;
+ GstRTSPRec *rec;
+ guint off = 0;
+ GMainContext *context = NULL;
+
+ g_return_val_if_fail (watch != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (data != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (size != 0, GST_RTSP_EINVAL);
+
+ g_mutex_lock (watch->mutex);
+
+ /* try to send the message synchronously first */
+ if (watch->messages->length == 0) {
+ res = write_bytes (watch->writefd.fd, data, &off, size);
+ if (res != GST_RTSP_EINTR) {
+ if (id != NULL)
+ *id = 0;
+ g_free ((gpointer) data);
+ goto done;
+ }
+ }
+
+ /* make a record with the data and id for sending async */
+ rec = g_slice_new (GstRTSPRec);
+ if (off == 0) {
+ rec->data = (guint8 *) data;
+ rec->size = size;
+ } else {
+ rec->data = g_memdup (data + off, size - off);
+ rec->size = size - off;
+ g_free ((gpointer) data);
+ }
+
+ do {
+ /* make sure rec->id is never 0 */
+ rec->id = ++watch->id;
+ } while (G_UNLIKELY (rec->id == 0));
+
+ /* add the record to a queue. FIXME we would like to have an upper limit here */
+ g_queue_push_head (watch->messages, rec);
+
+ /* make sure the main context will now also check for writability on the
+ * socket */
+ if (watch->writefd.events != WRITE_COND) {
+ watch->writefd.events = WRITE_COND;
+ context = ((GSource *) watch)->context;
+ }
+
+ if (id != NULL)
+ *id = rec->id;
+ res = GST_RTSP_OK;
+
+done:
+ g_mutex_unlock (watch->mutex);
+
+ if (context)
+ g_main_context_wakeup (context);
+
+ return res;
+}
+
+/**
+ * gst_rtsp_watch_send_message:
+ * @watch: a #GstRTSPWatch
+ * @message: a #GstRTSPMessage
+ * @id: location for a message ID or %NULL
+ *
+ * Send a @message using the connection of the @watch. If it cannot be sent
+ * immediately, it will be queued for transmission in @watch. The contents of
+ * @message will then be serialized and transmitted when the connection of the
+ * @watch becomes writable. In case the @message is queued, the ID returned in
+ * @id will be non-zero and used as the ID argument in the message_sent
+ * callback.
+ *
+ * Returns: #GST_RTSP_OK on success.
+ *
+ * Since: 0.10.25
+ */
+GstRTSPResult
+gst_rtsp_watch_send_message (GstRTSPWatch * watch, GstRTSPMessage * message,
+ guint * id)
+{
+ GString *str;
+ guint size;
+
+ g_return_val_if_fail (watch != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
+
+ /* make a record with the message as a string and id */
+ str = message_to_string (watch->conn, message);
+ size = str->len;
+ return gst_rtsp_watch_write_data (watch,
+ (guint8 *) g_string_free (str, FALSE), size, id);
+}
+
+/**
+ * gst_rtsp_watch_queue_data:
+ * @watch: a #GstRTSPWatch
+ * @data: the data to queue
+ * @size: the size of @data
+ *
+ * Queue @data for transmission in @watch. It will be transmitted when the
+ * connection of the @watch becomes writable.
+ *
+ * This function will take ownership of @data and g_free() it after use.
+ *
+ * The return value of this function will be used as the id argument in the
+ * message_sent callback.
+ *
+ * Deprecated: Use gst_rtsp_watch_write_data()
+ *
+ * Returns: an id.
+ *
+ * Since: 0.10.24
+ */
+#ifndef GST_REMOVE_DEPRECATED
+#ifdef GST_DISABLE_DEPRECATED
+guint
+gst_rtsp_watch_queue_data (GstRTSPWatch * watch, const guint8 * data,
+ guint size);
+#endif
+guint
+gst_rtsp_watch_queue_data (GstRTSPWatch * watch, const guint8 * data,
+ guint size)
+{
+ GstRTSPRec *rec;
+ GMainContext *context = NULL;
+
+ g_return_val_if_fail (watch != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (data != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (size != 0, GST_RTSP_EINVAL);
+
+ g_mutex_lock (watch->mutex);
+
+ /* make a record with the data and id */
+ rec = g_slice_new (GstRTSPRec);
+ rec->data = (guint8 *) data;
+ rec->size = size;
+ do {
+ /* make sure rec->id is never 0 */
+ rec->id = ++watch->id;
+ } while (G_UNLIKELY (rec->id == 0));
+
+ /* add the record to a queue. FIXME we would like to have an upper limit here */
+ g_queue_push_head (watch->messages, rec);
+
+ /* make sure the main context will now also check for writability on the
+ * socket */
+ if (watch->writefd.events != WRITE_COND) {
+ watch->writefd.events = WRITE_COND;
+ context = ((GSource *) watch)->context;
+ }
+ g_mutex_unlock (watch->mutex);
+
+ if (context)
+ g_main_context_wakeup (context);
+
+ return rec->id;
+}
+#endif /* GST_REMOVE_DEPRECATED */
+
+/**
+ * gst_rtsp_watch_queue_message:
+ * @watch: a #GstRTSPWatch
+ * @message: a #GstRTSPMessage
+ *
+ * Queue a @message for transmission in @watch. The contents of this
+ * message will be serialized and transmitted when the connection of the
+ * @watch becomes writable.
+ *
+ * The return value of this function will be used as the id argument in the
+ * message_sent callback.
+ *
+ * Deprecated: Use gst_rtsp_watch_send_message()
+ *
+ * Returns: an id.
+ *
+ * Since: 0.10.23
+ */
+#ifndef GST_REMOVE_DEPRECATED
+#ifdef GST_DISABLE_DEPRECATED
+guint
+gst_rtsp_watch_queue_message (GstRTSPWatch * watch, GstRTSPMessage * message);
+#endif
+guint
+gst_rtsp_watch_queue_message (GstRTSPWatch * watch, GstRTSPMessage * message)
+{
+ GString *str;
+ guint size;
+
+ g_return_val_if_fail (watch != NULL, GST_RTSP_EINVAL);
+ g_return_val_if_fail (message != NULL, GST_RTSP_EINVAL);
+
+ /* make a record with the message as a string and id */
+ str = message_to_string (watch->conn, message);
+ size = str->len;
+ return gst_rtsp_watch_queue_data (watch,
+ (guint8 *) g_string_free (str, FALSE), size);
+}
+#endif /* GST_REMOVE_DEPRECATED */
projects / platform / upstream / gstreamer.git / blobdiff