/*****************************************************************************
* announce.c : Session announcement
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
+ * Copyright (C) 2002 VideoLAN (Centrale Réseaux) and its contributors
*
* Authors: Clément Stenac <zorglub@via.ecp.fr>
* Damien Lucas <nitrox@via.ecp.fr>
#include "announce.h"
#include "network.h"
-#define SAP_IPV4_ADDR "224.2.127.254" /* Standard port and address for SAP */
-#define SAP_PORT 9875
-
-#define SAP_IPV6_ADDR_1 "FF0"
-#define SAP_IPV6_ADDR_2 "::2:7FFE"
-
-#define DEFAULT_PORT "1234"
-
-/****************************************************************************
- * Split : split a string into two parts: the one which is before the delim
- * and the one which is after.
- * NULL is returned if delim is not found
- ****************************************************************************/
-static char * split( char *psz_in, char *psz_out1, char *psz_out2, char delim)
-{
- unsigned int i_count = 0; /* pos in input string */
- unsigned int i_pos1 = 0; /* pos in out2 string */
- unsigned int i_pos2 = 0;
- char *psz_cur; /* store the pos of the first delim found */
-
- /* Skip spaces at the beginning */
- while( psz_in[i_count] == ' ' )
- {
- i_count++;
- }
-
- if( psz_in[i_count] == '\0' )
- {
- return NULL;
- }
-
- /* Look for delim */
- while( psz_in[i_count] && psz_in[i_count] != delim )
- {
- psz_out1[i_pos1] = psz_in[i_count];
- i_count++;
- i_pos1++;
- }
- /* Mark the end of out1 */
- psz_out1[i_pos1] = '\0';
-
- if( psz_in[i_count] == '\0' )
- {
- return NULL;
- }
-
- /* store pos of the first delim */
- psz_cur = psz_in + i_count;
-
- /* skip all delim and all spaces */
- while( psz_in[i_count] == ' ' || psz_in[i_count] == delim )
- {
- i_count++;
- }
-
- if( psz_in[i_count] == '\0' )
- {
- return psz_cur;
- }
-
- /* Store the second string */
- while( psz_in[i_count] )
- {
- psz_out2[i_pos2] = psz_in[i_count];
- i_pos2++;
- i_count++;
- }
- psz_out2[i_pos2] = '\0';
-
- return psz_cur;
-}
-
-/*****************************************************************************
- * sout_SAPNew: Creates a SAP Session
- *****************************************************************************/
-sap_session_t * sout_SAPNew ( sout_instance_t *p_sout,
- char * psz_url_arg,
- char * psz_name_arg,
- int ip_version,
- char * psz_v6_scope )
-{
- sap_session_t *p_sap; /* The SAP structure */
- module_t *p_network; /* Network module */
- network_socket_t socket_desc; /* Socket descriptor */
- char *sap_ipv6_addr = NULL; /* IPv6 built address */
- char *psz_eol; /* Used to parse IPv6 URIs */
- int i_port; /* Port in numerical format */
-
- /* Allocate the SAP structure */
- p_sap = (sap_session_t *) malloc( sizeof ( sap_session_t ) ) ;
- if ( !p_sap )
- {
- msg_Err( p_sout, "out of memory" );
- return NULL;
- }
-
- /* Fill the information in the structure */
- if( strstr( psz_url_arg, "[" ) )
- {
- /* We have an IPv6 address. Do not use ':' as the port separator */
- psz_eol = strchr( psz_url_arg, ']' );
- if( !psz_eol )
- {
- msg_Warn( p_sout, "no matching ], unable to parse URI");
- return NULL;
- }
-
- if( !psz_eol++ )
- {
- sprintf( p_sap->psz_url, "%s", psz_url_arg );
- sprintf( p_sap->psz_port, "%s", DEFAULT_PORT );
- }
- else
- {
- *psz_eol = '\0';
- sprintf( p_sap->psz_url, "%s", psz_url_arg );
- psz_eol++;
- if( psz_eol )
- {
- sprintf( p_sap->psz_port, "%s", psz_eol );
- }
- }
- }
- else
- {
- split( psz_url_arg, p_sap->psz_url, p_sap->psz_port, ':' );
- }
-
- /* Check if we have a port */
- if( !strlen( p_sap->psz_port ) )
- {
- sprintf( p_sap->psz_port, "%s", DEFAULT_PORT );
- }
-
- /* Make sure our port is valid and atoi it */
- i_port = atoi( p_sap->psz_port );
-
- if( !i_port )
- {
- sprintf( p_sap->psz_port, "%s", DEFAULT_PORT );
- }
- else
- {
- sprintf( p_sap->psz_port, "%i", i_port );
- }
-
- /* The name that we send */
- sprintf( p_sap->psz_name, "%s", psz_name_arg );
-
- p_sap->i_ip_version = ip_version;
-
- /* Only "6" triggers IPv6. IPv4 is default */
- if( ip_version != 6 )
- {
- msg_Dbg( p_sout, "creating IPv4 SAP socket" );
-
- /* Fill the socket descriptor */
- socket_desc.i_type = NETWORK_UDP;
- socket_desc.psz_bind_addr = "";
- socket_desc.i_bind_port = 0;
- socket_desc.psz_server_addr = SAP_IPV4_ADDR;
- socket_desc.i_server_port = SAP_PORT;
- socket_desc.i_handle = 0;
- socket_desc.i_ttl = 0;
-
- /* Call the network module */
- p_sout->p_private = (void*) &socket_desc;
- if( !( p_network = module_Need( p_sout, "network", "ipv4" ) ) )
- {
- msg_Warn( p_sout, "failed to open a connection (udp)" );
- return NULL;
- }
- module_Unneed( p_sout, p_network );
-
- p_sap->i_socket = socket_desc.i_handle;
- if( p_sap->i_socket < 0 )
- {
- msg_Warn( p_sout, "unable to initialize SAP" );
- return NULL;
- }
- }
- else
- {
- msg_Dbg( p_sout, "creating IPv6 SAP socket with scope %s",
- psz_v6_scope );
-
- /* Initialize and build the IPv6 address to broadcast to */
- sap_ipv6_addr = (char *) malloc( 28 * sizeof(char) );
- if ( !sap_ipv6_addr )
- {
- msg_Err( p_sout, "out of memory" );
- return NULL;
- }
- sprintf( sap_ipv6_addr, "%s%c%s",
- SAP_IPV6_ADDR_1, psz_v6_scope[0], SAP_IPV6_ADDR_2 );
-
- /* Fill the socket descriptor */
- socket_desc.i_type = NETWORK_UDP;
- socket_desc.psz_bind_addr = "";
- socket_desc.i_bind_port = 0;
- socket_desc.psz_server_addr = sap_ipv6_addr;
- socket_desc.i_server_port = SAP_PORT;
- socket_desc.i_handle = 0;
- socket_desc.i_ttl = 0;
-
- /* Call the network module */
- p_sout->p_private = (void *) &socket_desc;
- if( !( p_network = module_Need( p_sout, "network", "ipv6" ) ) )
- {
- msg_Warn( p_sout, "failed to open a connection (udp)" );
- return NULL;
- }
- module_Unneed( p_sout, p_network );
-
- p_sap->i_socket = socket_desc.i_handle;
- if( p_sap->i_socket <= 0 )
- {
- msg_Warn( p_sout, "unable to initialize SAP" );
- return NULL;
- }
-
- /* Free what we allocated */
- if( sap_ipv6_addr )
- {
- free( sap_ipv6_addr );
- }
- }
-
- msg_Dbg( p_sout, "SAP initialization complete" );
-
- return p_sap;
-}
-
-/*****************************************************************************
- * sout_SAPDelete: Deletes a SAP Session
- *****************************************************************************/
-void sout_SAPDelete( sout_instance_t *p_sout, sap_session_t * p_sap )
-{
- int i_ret;
-
-#if defined( UNDER_CE )
- i_ret = CloseHandle( (HANDLE)p_sap->i_socket );
-#elif defined( WIN32 )
- i_ret = closesocket( p_sap->i_socket );
-#else
- i_ret = close( p_sap->i_socket );
-#endif
-
- if( i_ret )
- {
- msg_Err( p_sout, "unable to close SAP socket" );
- }
-
- free( p_sap );
-}
-
-/*****************************************************************************
- * sout_SAPSend: Sends a SAP packet
- *****************************************************************************/
-void sout_SAPSend( sout_instance_t *p_sout, sap_session_t * p_sap )
-{
- char psz_msg[1000]; /* SDP content */
- char *psz_head; /* SAP header */
- char *psz_send; /* What we send */
- char *psz_type = "application/sdp";
- int i_header_size; /* SAP header size */
- int i_msg_size; /* SDP content size */
- int i_size; /* Total size */
- int i_ret = 0;
-
- /* We send a packet every 24 calls to the function */
- if( p_sap->i_calls++ < 24 )
- {
- return;
- }
-
- i_header_size = 8 + strlen( psz_type ) + 1;
- psz_head = (char *) malloc( i_header_size * sizeof( char ) );
-
- if( ! psz_head )
- {
- msg_Err( p_sout, "out of memory" );
- return;
- }
-
- /* Create the SAP headers */
- psz_head[0] = 0x20; /* Means IPv4, not encrypted, not compressed */
- psz_head[1] = 0x00; /* No authentification */
- psz_head[2] = 0x42; /* Version */
- psz_head[3] = 0x12; /* Version */
-
- psz_head[4] = 0x01; /* Source IP FIXME: we should get the real address */
- psz_head[5] = 0x02; /* idem */
- psz_head[6] = 0x03; /* idem */
- psz_head[7] = 0x04; /* idem */
-
- strncpy( psz_head + 8, psz_type, 15 );
- psz_head[ i_header_size-1 ] = '\0';
-
- /* Create the SDP content */
- /* Do not add spaces at beginning of the lines ! */
- sprintf( psz_msg, "v=0\n"
- "o=VideoLAN 3247692199 3247895918 IN IP4 VideoLAN\n"
- "s=%s\n"
- "u=VideoLAN\n"
- "t=0 0\n"
- "m=video %s udp 33\n"
- "c=IN IP4 %s/15\n"
- "a=type:test\n",
- p_sap->psz_name, p_sap->psz_port, p_sap->psz_url );
-
- i_msg_size = strlen( psz_msg );
- i_size = i_msg_size + i_header_size;
-
- /* Create the message */
- psz_send = (char *) malloc( i_size*sizeof(char) );
- if( !psz_send )
- {
- msg_Err( p_sout, "out of memory" );
- return;
- }
-
- memcpy( psz_send, psz_head, i_header_size );
- memcpy( psz_send + i_header_size, psz_msg, i_msg_size );
-
- if( i_size < 1024 ) /* We mustn't send packets larger than 1024B */
- {
- i_ret = send( p_sap->i_socket, psz_send, i_size, 0 );
- }
-
- if( i_ret <= 0 )
- {
- msg_Warn( p_sout, "SAP send failed on socket %i (%s)",
- p_sap->i_socket, strerror(errno) );
- }
-
- p_sap->i_calls = 0;
-
- /* Free what we allocated */
- free( psz_send );
- free( psz_head );
-}
+#define DEFAULT_PORT 1234
#ifdef HAVE_SLP_H
/*****************************************************************************
projects / vlc / blobdiff