/*****************************************************************************
- * announce.c : Session announcement
+ * announce.c : announce handler
*****************************************************************************
- * Copyright (C) 2002 VideoLAN
+ * Copyright (C) 2002-2007 the VideoLAN team
+ * $Id$
*
- * Authors: Clément Stenac <zorglub@via.ecp.fr>
- * Damien Lucas <nitrox@via.ecp.fr>
+ * Authors: Clément Stenac <zorglub@videolan.org>
*
* 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
*
* 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.
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
*****************************************************************************/
/*****************************************************************************
* Preamble
*****************************************************************************/
-#include <stdlib.h> /* free() */
-#include <stdio.h> /* sprintf() */
-#include <string.h> /* strerror() */
+#ifdef HAVE_CONFIG_H
+# include "config.h"
+#endif
+
+#include <vlc_common.h>
+#include <vlc_sout.h>
+#include "stream_output.h"
+#include "libvlc.h"
-#include <unistd.h>
+#include <assert.h>
-#include <vlc/vlc.h>
+struct announce_method_t
+{
+} sap_method;
-#include <vlc/sout.h>
-#undef DEBUG_BUFFER
+/****************************************************************************
+ * Sout-side functions
+ ****************************************************************************/
-#include <announce.h>
-#include <network.h>
+static void sap_destroy (vlc_object_t *p_this)
+{
+ libvlc_priv (p_this->p_libvlc)->p_sap = NULL;
+}
-#define SAP_IPV4_ADDR "224.2.127.254" /* Standard port and address for SAP */
-#define SAP_PORT 9875
+#undef sout_AnnounceRegisterSDP
-#define SAP_IPV6_ADDR_1 "FF0"
-#define SAP_IPV6_ADDR_2 "::2:7FFE"
+static vlc_mutex_t sap_mutex = VLC_STATIC_MUTEX;
-/*****************************************************************************
- * sout_SAPNew: Creates a SAP Session
- *****************************************************************************/
-sap_session_t * sout_SAPNew ( sout_instance_t *p_sout ,
- char * psz_url_arg , char *psz_port_arg ,
- char * psz_name_arg, int ip_version,
- char * psz_v6_scope )
+/**
+ * Registers a new session with the announce handler, using a pregenerated SDP
+ *
+ * \param obj a VLC object
+ * \param psz_sdp the SDP to register
+ * \param psz_dst session address (needed for SAP address auto detection)
+ * \param p_method an announce method descriptor
+ * \return the new session descriptor structure
+ */
+session_descriptor_t *
+sout_AnnounceRegisterSDP( vlc_object_t *obj, const char *psz_sdp,
+ const char *psz_dst, announce_method_t *p_method )
{
-
- sap_session_t *p_new; /* The SAP structure */
- module_t *p_network; /* Network module */
- network_socket_t socket_desc; /* Socket descriptor */
- char psz_network[6]; /* IPv4 or IPv6 */
- struct sockaddr_in addr; /* IPv4 connection structure */
- struct sockaddr_in6 addr6;/* IPv6 connection structure */
- char *sap_ipv6_addr=NULL; /* IPv6 built address */
- void *net_ipv6_addr=NULL; /* IPv6 address in net-format */
- int i_status=0; /* Problems on system calls*/
-
- /* Allocate the SAP structure */
- p_new = (sap_session_t *)malloc( sizeof ( sap_session_t ) ) ;
- if ( !p_new )
- {
- msg_Err( p_sout, "No memory left" );
+ assert (p_method == &sap_method);
+ (void) p_method;
+
+ session_descriptor_t *p_session = calloc( 1, sizeof (*p_session) );
+ if( !p_session )
return NULL;
+
+ p_session->psz_sdp = strdup( psz_sdp );
+
+ /* GRUIK. We should not convert back-and-forth from string to numbers */
+ struct addrinfo *res;
+ if (vlc_getaddrinfo (obj, psz_dst, 0, NULL, &res) == 0)
+ {
+ if (res->ai_addrlen <= sizeof (p_session->addr))
+ memcpy (&p_session->addr, res->ai_addr,
+ p_session->addrlen = res->ai_addrlen);
+ freeaddrinfo (res);
}
-
- /* Fill the information in the structure */
- sprintf ( p_new->psz_url , "%s" , psz_url_arg );
- sprintf ( p_new->psz_name , "%s" , psz_name_arg );
- /* Port is not implemented in sout */
- sprintf ( p_new->psz_port, "%s" , psz_port_arg );
- p_new->i_ip_version = ip_version;
-
- /* Only "6" triggers IPv6. IPv4 is default */
- if(ip_version != 6)
+ vlc_mutex_lock (&sap_mutex);
+ sap_handler_t *p_sap = libvlc_priv (obj->p_libvlc)->p_sap;
+ if (p_sap == NULL)
{
- 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;
-
- /* Call the network module */
- sprintf ( psz_network, "ipv4" );
- p_sout->p_private=(void*) &socket_desc;
- if( !( p_network = module_Need( p_sout, "network", psz_network ) ) )
- {
- msg_Warn( p_sout, "failed to open a connection (udp)" );
- return NULL;
- }
- module_Unneed( p_sout, p_network );
-
- p_new->socket = socket_desc.i_handle;
- if(p_new->socket <= 0 )
- {
- msg_Warn( p_sout, "Unable to initialize SAP" );
- return NULL;
- }
-
- /* Fill the sockaddr_in structure */
- memset( &addr , 0 , sizeof(addr) );
- addr.sin_family = AF_INET;
- addr.sin_addr.s_addr = inet_addr(SAP_IPV4_ADDR);
- addr.sin_port = htons( SAP_PORT );
- p_new->addr = addr;
+ p_sap = SAP_Create (VLC_OBJECT (obj->p_libvlc));
+ libvlc_priv (obj->p_libvlc)->p_sap = p_sap;
+ vlc_object_set_destructor ((vlc_object_t *)p_sap, sap_destroy);
}
else
- {
- msg_Dbg(p_sout , "Creating IPv6 SAP socket with scope %s"
- , psz_v6_scope );
+ vlc_object_hold ((vlc_object_t *)p_sap);
+ vlc_mutex_unlock (&sap_mutex);
- /* 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, "No memory left" );
- return NULL;
- }
- sprintf(sap_ipv6_addr,"%s%c%s",
- SAP_IPV6_ADDR_1,
- psz_v6_scope[0],
- SAP_IPV6_ADDR_2);
+ if (p_sap == NULL)
+ goto error;
- /* Convert it to network format */
- net_ipv6_addr = (struct in6_addr *)malloc( sizeof(struct in6_addr) );
- if ( !net_ipv6_addr )
- {
- msg_Err( p_sout, "No memory left" );
- return NULL;
- }
-
-#ifndef WIN32
- i_status = inet_pton(AF_INET6,sap_ipv6_addr,net_ipv6_addr);
-#endif
- if(i_status < 0 )
- {
- msg_Warn(p_sout,"Unable to convert address to network format");
- return NULL;
- }
- else if(i_status == 0)
- {
- msg_Warn(p_sout,"Adresse de diffusion SAP invalide");
- return NULL;
- }
-
- /* 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;
-
- sprintf ( psz_network, "ipv6" );
-
- /* Call the network module */
- p_sout->p_private=(void*) &socket_desc;
- if( !( p_network = module_Need( p_sout, "network", psz_network ) ) )
- {
- msg_Warn( p_sout, "failed to open a connection (udp)" );
- return NULL;
- }
- module_Unneed( p_sout, p_network );
-
- p_new->socket = socket_desc.i_handle;
+ msg_Dbg (obj, "adding SAP session");
+ SAP_Add (p_sap, p_session );
+ return p_session;
- if(p_new->socket <= 0 )
- {
- msg_Warn( p_sout, "Unable to initialize SAP" );
- return NULL;
- }
-
- /* Fill the sockaddr_in structure */
- memset( &addr6 , 0 , sizeof(addr6) );
- addr6.sin6_family = AF_INET6;
- memcpy( &addr6.sin6_addr.s6_addr , net_ipv6_addr ,
- sizeof(addr6.sin6_addr.s6_addr) );
-
- addr6.sin6_port = htons( SAP_PORT );
- p_new->addr6 = addr6;
+error:
+ free (p_session->psz_sdp);
+ free (p_session);
+ return NULL;
+}
- /* Free what we allocated */
- if( sap_ipv6_addr ) free(sap_ipv6_addr);
- if( net_ipv6_addr ) free(net_ipv6_addr);
- }
-
- msg_Dbg (p_sout,"SAP initialization complete");
-
- return(p_new);
+#undef sout_AnnounceUnRegister
+/**
+ * Unregisters an existing session
+ *
+ * \param obj a VLC object
+ * \param p_session the session descriptor
+ * \return VLC_SUCCESS or an error
+ */
+int sout_AnnounceUnRegister( vlc_object_t *obj,
+ session_descriptor_t *p_session )
+{
+ sap_handler_t *p_sap = libvlc_priv (obj->p_libvlc)->p_sap;
+
+ msg_Dbg (obj, "removing SAP session");
+ SAP_Del (p_sap, p_session);
+
+ vlc_mutex_lock (&sap_mutex);
+ vlc_object_release ((vlc_object_t *)p_sap);
+ vlc_mutex_unlock (&sap_mutex);
+
+ free (p_session->psz_sdp);
+ free (p_session);
+
+ return 0;
}
-/*****************************************************************************
- * sout_SAPDelete: Deletes a SAP Session
- *****************************************************************************/
-void sout_SAPDelete( sout_instance_t *p_sout , sap_session_t * p_this )
+/**
+ * \return the SAP announce method
+ */
+announce_method_t * sout_SAPMethod (void)
{
- if( close(p_this->socket) )
- msg_Err ( p_sout, "Unable to close SAP socket");
-
- if( p_this ) free( p_this );
-}
+ return &sap_method;
+}
-/*****************************************************************************
- * sout_SAPSend: Sends a SAP packet
- *****************************************************************************/
-void sout_SAPSend( sout_instance_t *p_sout, sap_session_t * p_this)
+void sout_MethodRelease (announce_method_t *m)
{
-
- char *sap_head; /* SAP header */
- char sap_msg[1000]; /* SDP content */
- char *sap_send; /* What we send */
- char *payload_type="application/sdp";
- int i_send_result=0; /* Result of send */
- int i;
- int i_header_size; /* SAP header size */
- int i_msg_size; /* SDP content size */
- int i_size; /* Total size */
-
- /* We send a packet every 24 calls to the function */
- if( p_this->sendnow == 24 )
- {
- i_header_size = 9 + strlen( payload_type );
- sap_head = ( char * )malloc( i_header_size * sizeof( char ) );
-
- if( ! sap_head )
- {
- msg_Warn( p_sout , "No memory left");
- return;
- }
-
- /* Create the SAP headers */
- sap_head[0]=0x20; /* Means IPv4, not encrypted, not compressed */
- sap_head[1]=0x00; /* No authentification */
- sap_head[2]=0x42; /* Version */
- sap_head[3]=0x12; /* Version */
-
- sap_head[4]=0x01; /* Source IP FIXME: we should get the real address */
- sap_head[5]=0x02; /* idem */
- sap_head[6]=0x03; /* idem */
- sap_head[7]=0x04; /* idem */
-
- strncpy( sap_head+8 , payload_type , 15 );
- sap_head[ i_header_size-1 ] = '\0';
-
- /* Create the SDP content */
- /* Do not add spaces at beginning of the lines ! */
- sprintf(sap_msg,"v=0\n\
-o=VideoLAN 3247692199 3247895918 IN IP4 VideoLAN\n\
-s=%s\n\
-u=VideoLAN\n\
-t=0 0\n\
-m=audio %s udp 14\n\
-c=IN IP4 %s/15\n\
-a=type:test\n", p_this->psz_name , p_this->psz_port , p_this->psz_url );
-
- i_msg_size = strlen( sap_msg );
- i_size = i_msg_size + i_header_size;
-
- /* Create the message */
- sap_send = ( char* )malloc( i_size*sizeof(char) );
- if(! sap_send)
- {
- msg_Err( p_sout , "No memory left") ;
- return;
- }
-
- for(i=0 ; i<i_header_size ; i++)
- {
- sap_send[i] = sap_head[i];
- }
-
- for( ; i<i_size; i++)
- {
- sap_send[i] = sap_msg[i-i_header_size];
- }
-
- if(i_size<1024) /* We mustn't send packets larger than 1024B */
- {
- if( p_this->i_ip_version == 6)
- {
- i_send_result = sendto( p_this->socket , sap_send ,
- i_size , 0 ,
- (struct sockaddr *)&p_this->addr6,
- sizeof(p_this->addr6) );
- }
- else
- {
- i_send_result = sendto( p_this->socket , sap_send ,
- i_size , 0 ,
- (struct sockaddr *)&p_this->addr ,
- sizeof(p_this->addr) );
- }
- }
-
- if(i_send_result == -1)
- {
- msg_Warn(p_sout , "SAP Send failed on socket %i. " ,
- p_this->socket );
- perror("sendto");
- }
-
- p_this->sendnow = 0;
-
- /* Free what we allocated */
- if(sap_send) free(sap_send);
- if(sap_head) free(sap_head);
- }
-
- p_this->sendnow++;
+ assert (m == &sap_method);
}