/* this callback is called when an incoming re-INVITE modifies the session*/
static void call_updating(SalOp *op){
LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
LinphoneCallState prevstate=LinphoneCallIdle;
SalMediaDescription *md;
md=sal_call_get_final_media_description(op);
if (md && !sal_media_description_empty(md))
{
if (sal_media_description_has_dir(call->localdesc,SalStreamSendRecv)){
ms_message("Our local status is SalStreamSendRecv");
if (sal_media_description_has_dir (md,SalStreamRecvOnly) || sal_media_description_has_dir(md,SalStreamInactive)){
/* we are being paused */
if(lc->vtable.display_status)
lc->vtable.display_status(lc,_("We are being paused..."));
linphone_call_set_state (call,LinphoneCallPausedByRemote,"Call paused by remote");
}else if (!sal_media_description_has_dir(call->resultdesc,SalStreamSendRecv) && sal_media_description_has_dir(md,SalStreamSendRecv)){
if(lc->vtable.display_status)
lc->vtable.display_status(lc,_("We have been resumed..."));
linphone_call_set_state (call,LinphoneCallStreamsRunning,"Connected (streams running)");
lc->current_call=call;
}else{
prevstate=call->state;
linphone_call_set_state(call, LinphoneCallUpdatedByRemote,"Call updated by remote");
}
}
/*accept the modification (sends a 200Ok)*/
sal_call_accept(op);
linphone_core_update_streams (lc,call,md);
if (prevstate!=LinphoneCallIdle){
linphone_call_set_state (call,prevstate,"Connected (streams running)");
}
}
}
/* this callback is called when an incoming re-INVITE modifies the session*/
static void call_updating(SalOp *op){
LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
SalMediaDescription *rmd=sal_call_get_remote_media_description(op);
if (rmd==NULL){
/* case of a reINVITE without SDP */
call_accept_update(lc,call);
call->expect_media_in_ack=TRUE;
return;
}
switch(call->state){
case LinphoneCallPausedByRemote:
if (sal_media_description_has_dir(rmd,SalStreamSendRecv) || sal_media_description_has_dir(rmd,SalStreamRecvOnly)){
call_resumed(lc,call);
}else call_paused_by_remote(lc,call);
break;
case LinphoneCallStreamsRunning:
case LinphoneCallConnected:
if (sal_media_description_has_dir(rmd,SalStreamSendOnly) || sal_media_description_has_dir(rmd,SalStreamInactive)){
call_paused_by_remote(lc,call);
}else{
call_updated_by_remote(lc,call);
}
break;
default:
call_accept_update(lc,call);
}
}
belle_sdp_session_description_t * media_description_to_sdp ( const SalMediaDescription *desc ) {
belle_sdp_session_description_t* session_desc=belle_sdp_session_description_new();
bool_t inet6;
belle_sdp_origin_t* origin;
int i;
if ( strchr ( desc->addr,':' ) !=NULL ) {
inet6=1;
} else inet6=0;
belle_sdp_session_description_set_version ( session_desc,belle_sdp_version_create ( 0 ) );
origin = belle_sdp_origin_create ( desc->username
,desc->session_id
,desc->session_ver
,"IN"
, inet6 ? "IP6" :"IP4"
,desc->addr );
belle_sdp_session_description_set_origin ( session_desc,origin );
belle_sdp_session_description_set_session_name ( session_desc,
belle_sdp_session_name_create ( desc->name[0]!='\0' ? desc->name : "Talk" ) );
if ( (!sal_media_description_has_dir ( desc,SalStreamSendOnly ) && !sal_media_description_has_dir ( desc,SalStreamInactive ))
|| desc->ice_ufrag[0] != '\0' ) {
belle_sdp_session_description_set_connection ( session_desc
,belle_sdp_connection_create ( "IN",inet6 ? "IP6" :"IP4",desc->addr ) );
} else {
belle_sdp_session_description_set_connection ( session_desc
,belle_sdp_connection_create ( "IN"
,inet6 ? "IP6" :"IP4"
,inet6 ? "::0" :"0.0.0.0" ) );
}
belle_sdp_session_description_set_time_description ( session_desc,belle_sdp_time_description_create ( 0,0 ) );
if ( desc->bandwidth>0 ) {
belle_sdp_session_description_set_bandwidth ( session_desc,"AS",desc->bandwidth );
}
if (desc->ice_completed == TRUE) belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("nortpproxy","yes"));
if (desc->ice_pwd[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-pwd",desc->ice_pwd));
if (desc->ice_ufrag[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-ufrag",desc->ice_ufrag));
if (desc->rtcp_xr.enabled == TRUE) {
belle_sdp_session_description_add_attribute(session_desc, create_rtcp_xr_attribute(&desc->rtcp_xr));
}
for ( i=0; i<desc->n_total_streams; i++ ) {
stream_description_to_sdp(session_desc, desc, &desc->streams[i]);
}
return session_desc;
}
static void sdp_process(SalOp *h){
ms_message("Doing SDP offer/answer process of type %s",h->sdp_offering ? "outgoing" : "incoming");
if (h->result){
sal_media_description_unref(h->result);
h->result = NULL;
}
/* if SDP was invalid */
if (h->base.remote_media == NULL) return;
h->result=sal_media_description_new();
if (h->sdp_offering){
offer_answer_initiate_outgoing(h->base.local_media,h->base.remote_media,h->result);
}else{
int i;
if (h->sdp_answer){
belle_sip_object_unref(h->sdp_answer);
}
offer_answer_initiate_incoming(h->base.local_media,h->base.remote_media,h->result,h->base.root->one_matching_codec);
/*for backward compatibility purpose*/
if(h->cnx_ip_to_0000_if_sendonly_enabled && sal_media_description_has_dir(h->result,SalStreamSendOnly)) {
set_addr_to_0000(h->result->addr);
for(i=0;i<h->result->nb_streams;++i){
if (h->result->streams[i].dir == SalStreamSendOnly)
set_addr_to_0000(h->result->streams[i].rtp_addr);
set_addr_to_0000(h->result->streams[i].rtcp_addr);
}
}
h->sdp_answer=(belle_sdp_session_description_t *)belle_sip_object_ref(media_description_to_sdp(h->result));
/*once we have generated the SDP answer, we modify the result description for processing by the upper layer.
It should contains media parameters constraint from the remote offer, not our response*/
strcpy(h->result->addr,h->base.remote_media->addr);
h->result->bandwidth=h->base.remote_media->bandwidth;
for(i=0;i<h->result->nb_streams;++i){
/*copy back parameters from remote description that we need in our result description*/
if (h->result->streams[i].rtp_port!=0){ /*if stream was accepted*/
strcpy(h->result->streams[i].rtp_addr,h->base.remote_media->streams[i].rtp_addr);
h->result->streams[i].ptime=h->base.remote_media->streams[i].ptime;
h->result->streams[i].bandwidth=h->base.remote_media->streams[i].bandwidth;
h->result->streams[i].rtp_port=h->base.remote_media->streams[i].rtp_port;
strcpy(h->result->streams[i].rtcp_addr,h->base.remote_media->streams[i].rtcp_addr);
h->result->streams[i].rtcp_port=h->base.remote_media->streams[i].rtcp_port;
if ((h->result->streams[i].proto == SalProtoRtpSavpf) || (h->result->streams[i].proto == SalProtoRtpSavp)) {
h->result->streams[i].crypto[0] = h->base.remote_media->streams[i].crypto[0];
}
}
}
}
}
static sdp_message_t *create_generic_sdp(const SalMediaDescription *desc)
{
sdp_message_t *local;
int inet6;
char sessid[16];
char sessver[16];
snprintf(sessid,16,"%i",desc->session_id);
snprintf(sessver,16,"%i",desc->session_ver);
sdp_message_init (&local);
if (strchr(desc->addr,':')!=NULL){
inet6=1;
}else inet6=0;
sdp_message_v_version_set (local, osip_strdup ("0"));
sdp_message_o_origin_set (local, osip_strdup (desc->username),
osip_strdup (sessid), osip_strdup (sessver),
osip_strdup ("IN"), inet6 ? osip_strdup("IP6") : osip_strdup ("IP4"),
osip_strdup (desc->addr));
sdp_message_s_name_set (local, osip_strdup ("Talk"));
if(!sal_media_description_has_dir (desc,SalStreamSendOnly))
{
sdp_message_c_connection_add (local, -1,
osip_strdup ("IN"), inet6 ? osip_strdup ("IP6") : osip_strdup ("IP4"),
osip_strdup (desc->addr), NULL, NULL);
}
else
{
sdp_message_c_connection_add (local, -1,
osip_strdup ("IN"), inet6 ? osip_strdup ("IP6") : osip_strdup ("IP4"),
inet6 ? osip_strdup ("::0") : osip_strdup ("0.0.0.0"), NULL, NULL);
}
sdp_message_t_time_descr_add (local, osip_strdup ("0"), osip_strdup ("0"));
if (desc->bandwidth>0) sdp_message_b_bandwidth_add (local, -1, osip_strdup ("AS"),
int_2char(desc->bandwidth));
return local;
}
/*
* could be reach :
* - when the call is accepted
* - when a request is accepted (pause, resume)
*/
static void call_accepted(SalOp *op){
LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
SalMediaDescription *md;
if (call==NULL){
ms_warning("No call to accept.");
return ;
}
/*set privacy*/
call->current_params.privacy=(LinphonePrivacyMask)sal_op_get_privacy(call->op);
/* Handle remote ICE attributes if any. */
if (call->ice_session != NULL) {
linphone_core_update_ice_from_remote_media_description(call, sal_call_get_remote_media_description(op));
}
#ifdef BUILD_UPNP
if (call->upnp_session != NULL) {
linphone_core_update_upnp_from_remote_media_description(call, sal_call_get_remote_media_description(op));
}
#endif //BUILD_UPNP
md=sal_call_get_final_media_description(op);
if (md) /*make sure re-invite will not propose video again*/
call->params.has_video &= linphone_core_media_description_contains_video_stream(md);
if (call->state==LinphoneCallOutgoingProgress ||
call->state==LinphoneCallOutgoingRinging ||
call->state==LinphoneCallOutgoingEarlyMedia){
linphone_call_set_state(call,LinphoneCallConnected,"Connected");
if (call->referer) linphone_core_notify_refer_state(lc,call->referer,call);
}
if (md && !sal_media_description_empty(md) && !linphone_core_incompatible_security(lc,md)){
linphone_call_update_remote_session_id_and_ver(call);
if (sal_media_description_has_dir(md,SalStreamSendOnly) ||
sal_media_description_has_dir(md,SalStreamInactive)){
if (lc->vtable.display_status){
char *tmp=linphone_call_get_remote_address_as_string (call);
char *msg=ms_strdup_printf(_("Call with %s is paused."),tmp);
lc->vtable.display_status(lc,msg);
ms_free(tmp);
ms_free(msg);
}
linphone_core_update_streams (lc,call,md);
linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
if (call->refer_pending)
linphone_core_start_refered_call(lc,call,NULL);
}else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
/*we are put on hold when the call is initially accepted */
if (lc->vtable.display_status){
char *tmp=linphone_call_get_remote_address_as_string (call);
char *msg=ms_strdup_printf(_("Call answered by %s - on hold."),tmp);
lc->vtable.display_status(lc,msg);
ms_free(tmp);
ms_free(msg);
}
linphone_core_update_streams (lc,call,md);
linphone_call_set_state(call,LinphoneCallPausedByRemote,"Call paused by remote");
}else{
if (call->state!=LinphoneCallUpdating){
if (call->state==LinphoneCallResuming){
if (lc->vtable.display_status){
lc->vtable.display_status(lc,_("Call resumed."));
}
}else{
if (lc->vtable.display_status){
char *tmp=linphone_call_get_remote_address_as_string (call);
char *msg=ms_strdup_printf(_("Call answered by %s."),tmp);
lc->vtable.display_status(lc,msg);
ms_free(tmp);
ms_free(msg);
}
}
}
linphone_core_update_streams(lc,call,md);
/*also reflect the change if the "wished" params, in order to avoid to propose SAVP or video again
* further in the call, for example during pause,resume, conferencing reINVITEs*/
linphone_call_fix_call_parameters(call);
if (!call->current_params.in_conference)
lc->current_call=call;
linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
}
}else{
/*send a bye*/
ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
linphone_core_abort_call(lc,call,_("Incompatible, check codecs or security settings..."));
}
}
/*
* could be reach :
* - when the call is accepted
* - when a request is accepted (pause, resume)
*/
static void call_accepted(SalOp *op){
LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
SalMediaDescription *md;
if (call==NULL){
ms_warning("No call to accept.");
return ;
}
md=sal_call_get_final_media_description(op);
if (call->state==LinphoneCallOutgoingProgress ||
call->state==LinphoneCallOutgoingRinging ||
call->state==LinphoneCallOutgoingEarlyMedia){
linphone_call_set_state(call,LinphoneCallConnected,"Connected");
}
if (md && !sal_media_description_empty(md)){
if (sal_media_description_has_dir(md,SalStreamSendOnly) ||
sal_media_description_has_dir(md,SalStreamInactive)){
if (lc->vtable.display_status){
char *tmp=linphone_call_get_remote_address_as_string (call);
char *msg=ms_strdup_printf(_("Call with %s is paused."),tmp);
lc->vtable.display_status(lc,msg);
ms_free(tmp);
ms_free(msg);
}
linphone_core_update_streams (lc,call,md);
linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
}else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
/*we are put on hold when the call is initially accepted */
if (lc->vtable.display_status){
char *tmp=linphone_call_get_remote_address_as_string (call);
char *msg=ms_strdup_printf(_("Call answered by %s - on hold."),tmp);
lc->vtable.display_status(lc,msg);
ms_free(tmp);
ms_free(msg);
}
linphone_core_update_streams (lc,call,md);
linphone_call_set_state(call,LinphoneCallPausedByRemote,"Call paused by remote");
}else{
if (call->state==LinphoneCallStreamsRunning){
/*media was running before, the remote as acceted a call modification (that is
a reinvite made by us. We must notify the application this reinvite was accepted*/
linphone_call_set_state(call, LinphoneCallUpdated, "Call updated");
}else{
if (call->state==LinphoneCallResuming){
if (lc->vtable.display_status){
lc->vtable.display_status(lc,_("Call resumed."));
}
}else{
if (lc->vtable.display_status){
char *tmp=linphone_call_get_remote_address_as_string (call);
char *msg=ms_strdup_printf(_("Call answered by %s."),tmp);
lc->vtable.display_status(lc,msg);
ms_free(tmp);
ms_free(msg);
}
}
}
linphone_core_update_streams (lc,call,md);
linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
lc->current_call=call;
}
}else{
/*send a bye*/
ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
linphone_core_abort_call(lc,call,"No codec intersection");
}
}
belle_sdp_session_description_t * media_description_to_sdp ( const SalMediaDescription *desc ) {
belle_sdp_session_description_t* session_desc=belle_sdp_session_description_new();
bool_t inet6;
belle_sdp_origin_t* origin;
int i;
if ( strchr ( desc->addr,':' ) !=NULL ) {
inet6=1;
} else inet6=0;
belle_sdp_session_description_set_version ( session_desc,belle_sdp_version_create ( 0 ) );
origin = belle_sdp_origin_create ( desc->username
,desc->session_id
,desc->session_ver
,"IN"
, inet6 ? "IP6" :"IP4"
,desc->addr );
belle_sdp_session_description_set_origin ( session_desc,origin );
belle_sdp_session_description_set_session_name ( session_desc,
belle_sdp_session_name_create ( desc->name[0]!='\0' ? desc->name : "Talk" ) );
if ( !sal_media_description_has_dir ( desc,SalStreamInactive ) || desc->ice_ufrag[0] != '\0' ) {
/*in case of sendonly, setting of the IP on cnx we give a chance to receive stun packets*/
belle_sdp_session_description_set_connection ( session_desc
,belle_sdp_connection_create ( "IN",inet6 ? "IP6" :"IP4",desc->addr ) );
} else {
belle_sdp_session_description_set_connection ( session_desc
,belle_sdp_connection_create ( "IN"
,inet6 ? "IP6" :"IP4"
,inet6 ? "::0" :"0.0.0.0" ) );
}
belle_sdp_session_description_set_time_description ( session_desc,belle_sdp_time_description_create ( 0,0 ) );
if ( desc->bandwidth>0 ) {
belle_sdp_session_description_set_bandwidth ( session_desc,"AS",desc->bandwidth );
}
if (desc->set_nortpproxy == TRUE) belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("nortpproxy","yes"));
if (desc->ice_pwd[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-pwd",desc->ice_pwd));
if (desc->ice_ufrag[0] != '\0') belle_sdp_session_description_add_attribute(session_desc, belle_sdp_attribute_create("ice-ufrag",desc->ice_ufrag));
if (desc->rtcp_xr.enabled == TRUE) {
belle_sdp_session_description_add_attribute(session_desc, create_rtcp_xr_attribute(&desc->rtcp_xr));
}
if (desc->custom_sdp_attributes) {
belle_sdp_session_description_t *custom_desc = (belle_sdp_session_description_t *)desc->custom_sdp_attributes;
belle_sip_list_t *l = belle_sdp_session_description_get_attributes(custom_desc);
belle_sip_list_t *elem;
for (elem = l; elem != NULL; elem = elem->next) {
belle_sdp_session_description_add_attribute(session_desc, (belle_sdp_attribute_t *)elem->data);
}
}
for ( i=0; i<desc->nb_streams; i++ ) {
stream_description_to_sdp(session_desc, desc, &desc->streams[i]);
}
return session_desc;
}
