--- /dev/null
+/*****************************************************************************
+ * rtsp.c: Retreive a description from an RTSP url.
+ *****************************************************************************
+ * Copyright (C) 2003 VideoLAN
+ * $Id: rtsp.c,v 1.1 2003/08/03 02:00:00 fenrir Exp $
+ *
+ * Authors: Laurent Aimar <fenrir@via.ecp.fr>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
+ *****************************************************************************/
+
+/*****************************************************************************
+ * Preamble
+ *****************************************************************************/
+#include <stdlib.h>
+#include <vlc/vlc.h>
+#include <vlc/input.h>
+
+#ifdef HAVE_UNISTD_H
+# include <unistd.h>
+#endif
+
+#include <errno.h>
+
+#ifdef WIN32
+# include <winsock2.h>
+# include <ws2tcpip.h>
+# ifndef IN_MULTICAST
+# define IN_MULTICAST(a) IN_CLASSD(a)
+# endif
+#else
+# include <sys/socket.h>
+# include <netinet/in.h>
+# if HAVE_ARPA_INET_H
+# include <arpa/inet.h>
+# elif defined( SYS_BEOS )
+# include <net/netdb.h>
+# endif
+#endif
+
+#include "network.h"
+
+/*
+ * TODO:
+ * - login/password management
+ * - RTSP over UDP
+ *
+ */
+/*****************************************************************************
+ * Module descriptor
+ *****************************************************************************/
+static int Open ( vlc_object_t * );
+static void Close ( vlc_object_t * );
+
+vlc_module_begin();
+ set_description( _("RTSP SDP request") );
+ set_capability( "access", 0 );
+ add_category_hint( "stream", NULL, VLC_FALSE );
+ add_integer( "rtsp-caching", 2 * DEFAULT_PTS_DELAY / 1000, NULL,
+ "", "", VLC_TRUE );
+ add_shortcut( "rtsp" );
+ add_shortcut( "rtspu" );
+ set_callbacks( Open, Close );
+vlc_module_end();
+
+/*****************************************************************************
+ * Locales prototypes
+ *****************************************************************************/
+static ssize_t Read ( input_thread_t *, byte_t *, size_t );
+
+typedef struct
+{
+ char *psz_host;
+ int i_port;
+ char *psz_path;
+ char *psz_login;
+ char *psz_password;
+} url_t;
+
+static void url_Parse( url_t *, char * );
+static void url_Clean( url_t * );
+
+static int NetRead ( input_thread_t *, int , uint8_t *, int );
+static void NetClose( input_thread_t *p_input, int i_handle );
+
+struct access_sys_t
+{
+ int i_handle;
+
+ /* description */
+ int i_data;
+ uint8_t *p_data;
+ uint8_t *p_actu;
+};
+
+#define RTSP_DESCRIBE_REQUEST \
+ "DESCRIBE rtsp://%s:%d/%s RTSP/1.0\r\n" \
+ "CSeq: 1\r\n" \
+ "User-Agent: " COPYRIGHT_MESSAGE "\r\n" \
+ "Accept: application/sdp\r\n" \
+ "\r\n"
+
+/*****************************************************************************
+ * Open: open the file
+ *****************************************************************************/
+static int Open( vlc_object_t *p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ access_sys_t *p_sys;
+
+ url_t url;
+ char *psz_network = "";
+ vlc_bool_t b_udp = VLC_FALSE;
+ module_t *p_network;
+ int i_handle = -1;
+
+ network_socket_t socket_desc;
+ int i_request;
+ uint8_t *p_request, *p;
+
+ int i_code;
+
+ vlc_value_t val;
+
+ /* Parse the URL [user:password@]host[:port]/path */
+ url_Parse( &url, p_input->psz_name );
+ if( url.i_port <= 0 )
+ {
+ /* Default RTSP port */
+ url.i_port = 554;
+ }
+
+ /* ipv4 vs ipv6 */
+ var_Create( p_input, "ipv4", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ var_Get( p_input, "ipv4", &val );
+ if( val.i_int )
+ {
+ psz_network = "ipv4";
+ }
+
+ var_Create( p_input, "ipv6", VLC_VAR_INTEGER | VLC_VAR_DOINHERIT );
+ var_Get( p_input, "ipv6", &val );
+ if( val.i_int )
+ {
+ psz_network = "ipv6";
+ }
+
+ /* UDP vs TCP */
+ if( !strcmp( p_input->psz_access, "rtspu" ) )
+ {
+ b_udp = VLC_TRUE;
+ }
+
+ if( b_udp )
+ {
+ msg_Err( p_input, "RTSP over UDP not supported" );
+ goto error;
+ }
+
+ /* Open the TCP connection */
+ socket_desc.i_type = NETWORK_TCP;
+ socket_desc.psz_server_addr = url.psz_host;
+ socket_desc.i_server_port = url.i_port;
+ socket_desc.psz_bind_addr = "";
+ socket_desc.i_bind_port = 0;
+ socket_desc.i_ttl = 0;
+
+ p_input->p_private = (void*)&socket_desc;
+ p_network = module_Need( p_input, "network", psz_network );
+ if( p_network == NULL )
+ {
+ goto error;
+ }
+ module_Unneed( p_input, p_network );
+ i_handle = socket_desc.i_handle;
+ p_input->i_mtu = socket_desc.i_mtu;
+
+ msg_Dbg( p_input, "connected with %s:%d", url.psz_host, url.i_port );
+
+ /* Build request */
+ i_request = strlen( RTSP_DESCRIBE_REQUEST ) +
+ strlen( url.psz_host ) + 5 + strlen( url.psz_path ) + 1;
+ p_request = malloc( i_request );
+ sprintf( p_request, RTSP_DESCRIBE_REQUEST,
+ url.psz_host, url.i_port, url.psz_path );
+
+ msg_Dbg( p_input, "Request=%s", p_request );
+ /* Send the request */
+ for( p = p_request; p < p_request + strlen( p_request ); )
+ {
+ int i_send;
+
+ i_send = send( i_handle, p, strlen( p ), 0 );
+ if( i_send <= 0 )
+ {
+ goto error;
+ }
+
+ p += i_send;
+ }
+ free( p_request );
+
+ /* Read the complete answer*/
+ i_request = 1024;
+ p_request = p = malloc( i_request );
+ p_request[0] = '\0';
+ for( ;; )
+ {
+ int i_recv;
+
+ i_recv = NetRead( p_input, i_handle, p, i_request - ( p - p_request ) - 1);
+ if( i_recv <= 0 )
+ {
+ break;
+ }
+
+ p[i_recv] = '\0';
+
+ p += i_recv;
+
+ if( p >= p_request + i_request - 1 )
+ {
+ int i_size = p - p_request;
+
+ p_request = realloc( p_request, i_request + 1024 );
+
+ p = p_request + i_size;
+ }
+ }
+
+ if( strlen( p_request ) <= 0 ||
+ ( !strstr( p_request, "\n\n" ) && !strstr( p_request, "\r\n\r\n" ) ) )
+ {
+ msg_Dbg( p_input, "failed to retreive description" );
+ goto error;
+ }
+
+ /* Parse the header */
+ msg_Dbg( p_input, "answer header=%s", p_request );
+ if( strncmp( p_request, "RTSP/1.", strlen( "RTSP/1." ) ) )
+ {
+ msg_Err( p_input, "invalid answer" );
+ free( p_request );
+ goto error;
+ }
+ i_code = atoi( &p_request[strlen( "RTSP/1.x" )] );
+
+ if( i_code / 100 != 2 )
+ {
+ msg_Err( p_input, "return code is %d (!=2xx), not yet supported", i_code );
+ free( p_request );
+ goto error;
+ }
+
+ p_input->p_access_data = p_sys = malloc( sizeof( access_sys_t ) );
+ p_sys->i_handle = i_handle;
+ p_sys->p_data = p_request;
+ p_sys->i_data = strlen( p_request );
+ if( ( p = strstr( p_request, "\r\n\r\n" ) ) )
+ {
+ p_sys->p_actu = p + 4;
+ }
+ else if( ( p = strstr( p_request, "\n\n" ) ) )
+ {
+ p_sys->p_actu = p + 2;
+ }
+ else
+ {
+ msg_Err( p_input, "mhhh ? cannot happens" );
+ goto error;
+ }
+
+ /* Set exported functions */
+ p_input->pf_read = Read;
+ p_input->pf_seek = NULL;
+ p_input->pf_set_program = input_SetProgram;
+ p_input->pf_set_area = NULL;
+ p_input->p_private = NULL;
+
+ /* Finished to set some variable */
+ vlc_mutex_lock( &p_input->stream.stream_lock );
+ p_input->stream.b_pace_control = VLC_TRUE;
+ p_input->stream.p_selected_area->i_tell = 0;
+ p_input->stream.b_seekable = 0;
+ p_input->stream.p_selected_area->i_size = 0;
+ p_input->stream.i_method = INPUT_METHOD_NETWORK;
+ vlc_mutex_unlock( &p_input->stream.stream_lock );
+
+ /* Update default_pts to a suitable value for RTSP access */
+ p_input->i_pts_delay = config_GetInt( p_input, "rtsp-caching" ) * 1000;
+
+ url_Clean( &url );
+ return VLC_SUCCESS;
+
+error:
+ if( i_handle > 0 )
+ {
+ NetClose( p_input, i_handle );
+ }
+ url_Clean( &url );
+ return VLC_EGENERIC;
+}
+
+/*****************************************************************************
+ * Close: close the target
+ *****************************************************************************/
+static void Close( vlc_object_t * p_this )
+{
+ input_thread_t *p_input = (input_thread_t *)p_this;
+ access_sys_t *p_sys = p_input->p_access_data;
+
+ free( p_sys->p_data );
+ free( p_sys );
+}
+
+/*****************************************************************************
+ * Read: standard read on a file descriptor.
+ *****************************************************************************/
+static ssize_t Read( input_thread_t * p_input, byte_t * p_buffer, size_t i_len )
+{
+ access_sys_t *p_sys = p_input->p_access_data;
+
+ int i_copy = __MIN( (int)i_len, &p_sys->p_data[p_sys->i_data] - p_sys->p_actu );
+
+ if( i_copy <= 0 )
+ {
+ return 0;
+ }
+
+ memcpy( p_buffer, p_sys->p_actu, i_copy );
+
+ p_sys->p_actu += i_copy;
+
+ return i_copy;
+}
+
+/*****************************************************************************
+ *
+ *****************************************************************************/
+static void url_Parse( url_t *url, char *psz_url )
+{
+ char *psz_dup = strdup( psz_url );
+ char *psz_tmp, *p;
+
+ p = psz_dup;
+
+ while( *p == '/' )
+ {
+ p++;
+ }
+ if( strchr( p, '@' ) )
+ {
+ /* TODO: There is a login/password */
+ }
+ url->psz_login = strdup( "" );
+ url->psz_password = strdup( "" );
+
+ psz_tmp = p;
+ /* Skip host */
+ while( *p && *p != ':' && *p != '/' )
+ {
+ if( *p == '[' )
+ {
+ /* ipv6 address */
+ while( *p && *p != ']' )
+ {
+ *p++;
+ }
+ }
+ p++;
+ }
+
+ /* Get port */
+ if( *p == ':' )
+ {
+ char *psz_port;
+ *p++ = 0;
+ psz_port = p;
+
+ while( *p && *p != '/' )
+ {
+ p++;
+ }
+ url->i_port = atoi( psz_port );
+ }
+ else
+ {
+ url->i_port = 0;
+ }
+ /* Get host */
+ *p++ = '\0';
+ url->psz_host = strdup( psz_tmp );
+
+ /* Get path */
+ url->psz_path = strdup( p );
+
+ free( psz_dup );
+}
+
+static void url_Clean( url_t *url )
+{
+ if( url->psz_host )
+ {
+ free( url->psz_host );
+ }
+ if( url->psz_path )
+ {
+ free( url->psz_path );
+ }
+ if( url->psz_login )
+ {
+ free( url->psz_login );
+ }
+ if( url->psz_password )
+ {
+ free( url->psz_password );
+ }
+}
+
+
+
+static int NetRead( input_thread_t *p_input,
+ int i_handle,
+ uint8_t *p_buffer, int i_len )
+{
+ struct timeval timeout;
+ fd_set fds;
+ int i_recv;
+ int i_ret;
+
+ /* Initialize file descriptor set */
+ FD_ZERO( &fds );
+ FD_SET( i_handle, &fds );
+
+ /* We'll wait 1 second if nothing happens */
+ timeout.tv_sec = 1;
+ timeout.tv_usec = 0;
+
+ /* Find if some data is available */
+ while( (i_ret = select( i_handle + 1, &fds,
+ NULL, NULL, &timeout )) == 0
+ || (i_ret < 0 && errno == EINTR) )
+ {
+ FD_ZERO( &fds );
+ FD_SET( i_handle, &fds );
+ timeout.tv_sec = 1;
+ timeout.tv_usec = 0;
+
+ if( p_input->b_die || p_input->b_error )
+ {
+ return 0;
+ }
+ }
+
+ if( i_ret < 0 )
+ {
+ msg_Err( p_input, "network select error (%s)", strerror(errno) );
+ return -1;
+ }
+
+ i_recv = recv( i_handle, p_buffer, i_len, 0 );
+
+ if( i_recv < 0 )
+ {
+ msg_Err( p_input, "recv failed (%s)", strerror(errno) );
+ }
+
+ return i_recv;
+}
+
+
+
+static void NetClose( input_thread_t *p_input, int i_handle )
+{
+#if defined( UNDER_CE )
+ CloseHandle( (HANDLE)i_handle );
+#elif defined( WIN32 )
+ closesocket( i_handle );
+#else
+ close( i_handle );
+#endif
+}
+
+
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