Esempio n. 1
0
static void process_request_event(void *op_base, const belle_sip_request_event_t *event) {
	SalOp* op = (SalOp*)op_base;
	belle_sip_server_transaction_t* server_transaction=NULL;
	belle_sdp_session_description_t* sdp;
	belle_sip_request_t* req = belle_sip_request_event_get_request(event);
	belle_sip_dialog_state_t dialog_state;
	belle_sip_response_t* resp;
	belle_sip_header_t* call_info;
	const char *method=belle_sip_request_get_method(req);
	bool_t is_update=FALSE;

	if (strcmp("ACK",method)!=0){  /*ACK does'nt create srv transaction*/
		server_transaction = belle_sip_provider_create_server_transaction(op->base.root->prov,belle_sip_request_event_get_request(event));
		belle_sip_object_ref(server_transaction);
		belle_sip_transaction_set_application_data(BELLE_SIP_TRANSACTION(server_transaction),sal_op_ref(op));
	}

	if (strcmp("INVITE",method)==0) {
		if (op->pending_server_trans) belle_sip_object_unref(op->pending_server_trans);
		/*updating pending invite transaction*/
		op->pending_server_trans=server_transaction;
		belle_sip_object_ref(op->pending_server_trans);
	}

	if (strcmp("UPDATE",method)==0) {
		if (op->pending_update_server_trans) belle_sip_object_unref(op->pending_update_server_trans);
		/*updating pending update transaction*/
		op->pending_update_server_trans=server_transaction;
		belle_sip_object_ref(op->pending_update_server_trans);
	}

	if (!op->dialog) {
		set_or_update_dialog(op,belle_sip_provider_create_dialog(op->base.root->prov,BELLE_SIP_TRANSACTION(op->pending_server_trans)));
		ms_message("new incoming call from [%s] to [%s]",sal_op_get_from(op),sal_op_get_to(op));
	}
	dialog_state=belle_sip_dialog_get_state(op->dialog);
	switch(dialog_state) {
	case BELLE_SIP_DIALOG_NULL: {
		if (strcmp("INVITE",method)==0) {
			if (!op->replaces && (op->replaces=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_replaces_t))) {
				belle_sip_object_ref(op->replaces);
			} else if(op->replaces) {
				ms_warning("replace header already set");
			}

			if (process_sdp_for_invite(op,req) == 0) {
				if ((call_info=belle_sip_message_get_header(BELLE_SIP_MESSAGE(req),"Call-Info"))) {
					if( strstr(belle_sip_header_get_unparsed_value(call_info),"answer-after=") != NULL) {
						op->auto_answer_asked=TRUE;
						ms_message("The caller asked to automatically answer the call(Emergency?)\n");
					}
				}
				op->base.root->callbacks.call_received(op);
			}
			break;
		} /* else same behavior as for EARLY state*/
	}
	case BELLE_SIP_DIALOG_EARLY: {
		//hmm probably a cancel
		if (strcmp("CANCEL",method)==0) {
			if(belle_sip_request_event_get_server_transaction(event)) {
				/*first answer 200 ok to cancel*/
				belle_sip_server_transaction_send_response(server_transaction
						,sal_op_create_response_from_request(op,req,200));
				/*terminate invite transaction*/
				call_terminated(op
						,op->pending_server_trans
						,belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(op->pending_server_trans)),487);


			} else {
				/*call leg does not exist*/
				belle_sip_server_transaction_send_response(server_transaction
							,sal_op_create_response_from_request(op,req,481));
			}
		} else if (strcmp("PRACK",method)==0) {
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
		} else if (strcmp("UPDATE",method)==0) {
			sal_op_reset_descriptions(op);
			if (process_sdp_for_invite(op,req)==0)
				op->base.root->callbacks.call_updating(op,TRUE);
		} else {
			belle_sip_error("Unexpected method [%s] for dialog state BELLE_SIP_DIALOG_EARLY",belle_sip_request_get_method(req));
			unsupported_method(server_transaction,req);
		}
		break;
	}
	case BELLE_SIP_DIALOG_CONFIRMED:
		/*great ACK received*/
		if (strcmp("ACK",method)==0) {
			if (op->sdp_offering){
				SalReason reason;
				if (extract_sdp(op,BELLE_SIP_MESSAGE(req),&sdp,&reason)==0){
					if (sdp){
						if (op->base.remote_media)
							sal_media_description_unref(op->base.remote_media);
						op->base.remote_media=sal_media_description_new();
						sdp_to_media_description(sdp,op->base.remote_media);
						sdp_process(op);
						belle_sip_object_unref(sdp);
					}else{
						ms_warning("SDP expected in ACK but not found.");
					}
				}
			}
			op->base.root->callbacks.call_ack(op);
		} else if(strcmp("BYE",method)==0) {
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
			op->base.root->callbacks.call_terminated(op,op->dir==SalOpDirIncoming?sal_op_get_from(op):sal_op_get_to(op));
			op->state=SalOpStateTerminating;
			/*call end not notified by dialog deletion because transaction can end before dialog*/
		} else if(strcmp("INVITE",method)==0 || (is_update=(strcmp("UPDATE",method)==0)) ) {
			if (is_update && !belle_sip_message_get_body(BELLE_SIP_MESSAGE(req))) {
				/*session timer case*/
				/*session expire should be handled. to be done when real session timer (rfc4028) will be implemented*/
				resp=sal_op_create_response_from_request(op,req,200);
				belle_sip_server_transaction_send_response(server_transaction,resp);
				belle_sip_object_unref(op->pending_update_server_trans);
				op->pending_update_server_trans=NULL;
			} else {
				/*re-invite*/
				sal_op_reset_descriptions(op);
				if (process_sdp_for_invite(op,req)==0)
					op->base.root->callbacks.call_updating(op,is_update);
			}
		} else if (strcmp("INFO",method)==0){
			if (belle_sip_message_get_body(BELLE_SIP_MESSAGE(req))
				&&	strstr(belle_sip_message_get_body(BELLE_SIP_MESSAGE(req)),"picture_fast_update")) {
				/*vfu request*/
				ms_message("Receiving VFU request on op [%p]",op);
				if (op->base.root->callbacks.vfu_request){
					op->base.root->callbacks.vfu_request(op);

				}
			}else{
				SalBody salbody;
				if (sal_op_get_body(op,(belle_sip_message_t*)req,&salbody)) {
					if (sal_body_has_type(&salbody,"application","dtmf-relay")){
						char tmp[10];
						if (sal_lines_get_value(salbody.data, "Signal",tmp, sizeof(tmp))){
							op->base.root->callbacks.dtmf_received(op,tmp[0]);
						}
					}else
						op->base.root->callbacks.info_received(op,&salbody);
				} else {
					op->base.root->callbacks.info_received(op,NULL);
				}
			}
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
		}else if (strcmp("REFER",method)==0) {
			sal_op_process_refer(op,event,server_transaction);
		} else if (strcmp("NOTIFY",method)==0) {
			sal_op_call_process_notify(op,event,server_transaction);
		} else if (strcmp("OPTIONS",method)==0) {
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
		} else if (strcmp("CANCEL",method)==0) {
			/*call leg does not exist because 200ok already sent*/
			belle_sip_server_transaction_send_response(server_transaction,sal_op_create_response_from_request(op,req,481));
		} else if (strcmp("MESSAGE",method)==0){
			sal_process_incoming_message(op,event);
		}else{
			ms_error("unexpected method [%s] for dialog [%p]",belle_sip_request_get_method(req),op->dialog);
			unsupported_method(server_transaction,req);
		}
		break;
	default:
		ms_error("unexpected dialog state [%s]",belle_sip_dialog_state_to_string(dialog_state));
		break;
	}

	if (server_transaction) belle_sip_object_unref(server_transaction);

}
Esempio n. 2
0
static void subscribe_process_request_event(void *op_base, const belle_sip_request_event_t *event) {
	SalOp* op = (SalOp*)op_base;
	belle_sip_server_transaction_t* server_transaction = belle_sip_provider_create_server_transaction(op->base.root->prov,belle_sip_request_event_get_request(event));
	belle_sip_request_t* req = belle_sip_request_event_get_request(event);
	belle_sip_dialog_state_t dialog_state;
	belle_sip_header_expires_t* expires = belle_sip_message_get_header_by_type(req,belle_sip_header_expires_t);
	belle_sip_header_t *event_header;
	SalBody body;
	belle_sip_response_t* resp;
	const char *eventname=NULL;
	const char *method=belle_sip_request_get_method(req);
	
	belle_sip_object_ref(server_transaction);
	if (op->pending_server_trans)  belle_sip_object_unref(op->pending_server_trans);
	op->pending_server_trans=server_transaction;

	event_header=belle_sip_message_get_header((belle_sip_message_t*)req,"Event");
	sal_op_get_body(op,(belle_sip_message_t*)req,&body);
	
	if (event_header==NULL){
		ms_warning("No event header in incoming SUBSCRIBE.");
		resp=sal_op_create_response_from_request(op,req,400);
		belle_sip_server_transaction_send_response(server_transaction,resp);
		return;
	}
	if (op->event==NULL) {
		op->event=event_header;
		belle_sip_object_ref(op->event);
	}
	eventname=belle_sip_header_get_unparsed_value(event_header);
	
	if (!op->dialog) {
		if (strcmp(method,"SUBSCRIBE")==0){
			op->dialog=belle_sip_provider_create_dialog(op->base.root->prov,BELLE_SIP_TRANSACTION(server_transaction));
			belle_sip_dialog_set_application_data(op->dialog,op);
			sal_op_ref(op);
			ms_message("new incoming subscription from [%s] to [%s]",sal_op_get_from(op),sal_op_get_to(op));
		}else{ /*this is a NOTIFY*/
			handle_notify(op,req,eventname,&body);
			return;
		}
	}
	dialog_state=belle_sip_dialog_get_state(op->dialog);
	switch(dialog_state) {

	case BELLE_SIP_DIALOG_NULL: {
		op->base.root->callbacks.subscribe_received(op,eventname,body.type ? &body : NULL);
		break;
	}
	case BELLE_SIP_DIALOG_EARLY:
		ms_error("unexpected method [%s] for dialog [%p] in state BELLE_SIP_DIALOG_EARLY ",belle_sip_request_get_method(req),op->dialog);
		break;

	case BELLE_SIP_DIALOG_CONFIRMED:
		if (strcmp("NOTIFY",method)==0) {
			handle_notify(op,req,eventname,&body);
		} else if (strcmp("SUBSCRIBE",method)==0) {
			/*either a refresh of an unsubscribe*/
			if (expires && belle_sip_header_expires_get_expires(expires)>0) {
				resp=sal_op_create_response_from_request(op,req,200);
				belle_sip_server_transaction_send_response(server_transaction,resp);
			} else if(expires) {
				ms_message("Unsubscribe received from [%s]",sal_op_get_from(op));
				resp=sal_op_create_response_from_request(op,req,200);
				belle_sip_server_transaction_send_response(server_transaction,resp);
				op->base.root->callbacks.subscribe_closed(op);
			}
		}
		break;
		default: {
			ms_error("unexpected dialog state [%s]",belle_sip_dialog_state_to_string(dialog_state));
		}
	}
}
Esempio n. 3
0
static void process_request_event(void *op_base, const belle_sip_request_event_t *event) {
	SalOp* op = (SalOp*)op_base;
	belle_sip_server_transaction_t* server_transaction=NULL;
	belle_sdp_session_description_t* sdp;
	belle_sip_request_t* req = belle_sip_request_event_get_request(event);
	belle_sip_dialog_state_t dialog_state;
	belle_sip_response_t* resp;
	belle_sip_header_t* call_info;

	if (strcmp("ACK",belle_sip_request_get_method(req))!=0){  /*ACK does'nt create srv transaction*/
		server_transaction = belle_sip_provider_create_server_transaction(op->base.root->prov,belle_sip_request_event_get_request(event));
		belle_sip_object_ref(server_transaction);
		belle_sip_transaction_set_application_data(BELLE_SIP_TRANSACTION(server_transaction),op);
		sal_op_ref(op);
	}

	if (strcmp("INVITE",belle_sip_request_get_method(req))==0) {
		if (op->pending_server_trans) belle_sip_object_unref(op->pending_server_trans);
		/*updating pending invite transaction*/
		op->pending_server_trans=server_transaction;
		belle_sip_object_ref(op->pending_server_trans);
	}

	if (!op->dialog) {
		set_or_update_dialog(op,belle_sip_provider_create_dialog(op->base.root->prov,BELLE_SIP_TRANSACTION(op->pending_server_trans)));
		ms_message("new incoming call from [%s] to [%s]",sal_op_get_from(op),sal_op_get_to(op));
	}
	dialog_state=belle_sip_dialog_get_state(op->dialog);
	switch(dialog_state) {

	case BELLE_SIP_DIALOG_NULL: {
		if (strcmp("INVITE",belle_sip_request_get_method(req))==0) {
			if (!op->replaces && (op->replaces=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_replaces_t))) {
				belle_sip_object_ref(op->replaces);
			} else if(op->replaces) {
				ms_warning("replace header already set");
			}

			process_sdp_for_invite(op,req);

			if ((call_info=belle_sip_message_get_header(BELLE_SIP_MESSAGE(req),"Call-Info"))) {
				if( strstr(belle_sip_header_extension_get_value(BELLE_SIP_HEADER_EXTENSION(call_info)),"answer-after=") != NULL) {
					op->auto_answer_asked=TRUE;
					ms_message("The caller asked to automatically answer the call(Emergency?)\n");
				}
			}

			op->base.root->callbacks.call_received(op);

			break;
		} /* else same behavior as for EARLY state*/
	}
	case BELLE_SIP_DIALOG_EARLY: {
		//hmm probably a cancel
		if (strcmp("CANCEL",belle_sip_request_get_method(req))==0) {
			if(belle_sip_request_event_get_server_transaction(event)) {
				/*first answer 200 ok to cancel*/
				belle_sip_server_transaction_send_response(server_transaction
						,sal_op_create_response_from_request(op,req,200));
				/*terminate invite transaction*/
				call_terminated(op
						,op->pending_server_trans
						,belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(op->pending_server_trans)),487);


			} else {
				/*call leg does not exist*/
				belle_sip_server_transaction_send_response(server_transaction
							,sal_op_create_response_from_request(op,req,481));
			}
		} else if (strcmp("PRACK",belle_sip_request_get_method(req))==0) {
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
		} else {
			belle_sip_error("Unexpected method [%s] for dialog state BELLE_SIP_DIALOG_EARLY",belle_sip_request_get_method(req));
			unsupported_method(server_transaction,req);
		}
		break;
	}
	case BELLE_SIP_DIALOG_CONFIRMED:
		/*great ACK received*/
		if (strcmp("ACK",belle_sip_request_get_method(req))==0) {
			if (op->sdp_offering){
				if ((sdp=belle_sdp_session_description_create(BELLE_SIP_MESSAGE(req)))){
					if (op->base.remote_media)
						sal_media_description_unref(op->base.remote_media);
					op->base.remote_media=sal_media_description_new();
					sdp_to_media_description(sdp,op->base.remote_media);
					sdp_process(op);
					belle_sip_object_unref(sdp);
				}
			}
			/*FIXME
		if (op->reinvite){
			op->reinvite=FALSE;
		}*/
			op->base.root->callbacks.call_ack(op);
		} else if(strcmp("BYE",belle_sip_request_get_method(req))==0) {
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
			op->base.root->callbacks.call_terminated(op,op->dir==SalOpDirIncoming?sal_op_get_from(op):sal_op_get_to(op));
			op->state=SalOpStateTerminating;
			/*call end not notified by dialog deletion because transaction can end before dialog*/
		} else if(strcmp("INVITE",belle_sip_request_get_method(req))==0) {
			/*re-invite*/
			if (op->base.remote_media){
				sal_media_description_unref(op->base.remote_media);
				op->base.remote_media=NULL;
			}
			if (op->result){
				sal_media_description_unref(op->result);
				op->result=NULL;
			}
			process_sdp_for_invite(op,req);

			op->base.root->callbacks.call_updating(op);
		} else if (strcmp("INFO",belle_sip_request_get_method(req))==0){
			if (belle_sip_message_get_body(BELLE_SIP_MESSAGE(req))
				&&	strstr(belle_sip_message_get_body(BELLE_SIP_MESSAGE(req)),"picture_fast_update")) {
				/*vfu request*/
				ms_message("Receiving VFU request on op [%p]",op);
				if (op->base.root->callbacks.vfu_request){
					op->base.root->callbacks.vfu_request(op);

				}
			}else{
				SalBody salbody;
				if (sal_op_get_body(op,(belle_sip_message_t*)req,&salbody)) {
					op->base.root->callbacks.info_received(op,&salbody);
				} else {
					op->base.root->callbacks.info_received(op,NULL);
				}
			}
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
		}else if (strcmp("REFER",belle_sip_request_get_method(req))==0) {
			sal_op_process_refer(op,event,server_transaction);
		} else if (strcmp("NOTIFY",belle_sip_request_get_method(req))==0) {
			sal_op_call_process_notify(op,event,server_transaction);
		} else if (strcmp("OPTIONS",belle_sip_request_get_method(req))==0) {
			resp=sal_op_create_response_from_request(op,req,200);
			belle_sip_server_transaction_send_response(server_transaction,resp);
		} else if (strcmp("CANCEL",belle_sip_request_get_method(req))==0) {
			/*call leg does not exist because 200ok already sent*/
			belle_sip_server_transaction_send_response(	server_transaction
														,sal_op_create_response_from_request(op,req,481));

		} else{
			ms_error("unexpected method [%s] for dialog [%p]",belle_sip_request_get_method(req),op->dialog);
			unsupported_method(server_transaction,req);
		}
		break;
	default: {
		ms_error("unexpected dialog state [%s]",belle_sip_dialog_state_to_string(dialog_state));
	}
	/* no break */
	}

	if (server_transaction) belle_sip_object_unref(server_transaction);

}