Beispiel #1
0
/*create an operation */
SalOp * sal_op_new(Sal *sal){
	SalOp *op=ms_new0(SalOp,1);
	__sal_op_init(op,sal);
	op->type=SalOpUnknown;
	op->privacy=SalPrivacyNone;
	op->manual_refresher=FALSE;/*tells that requests with expiry (SUBSCRIBE, PUBLISH) will be automatically refreshed*/
	sal_op_ref(op);
	return op;
}
Beispiel #2
0
static void presence_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_response_t* resp;
	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;


	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 */
			ms_message("Receiving out of dialog notify");
			handle_notify(op,req);
			return;
		}
	}
	dialog_state=belle_sip_dialog_get_state(op->dialog);
	switch(dialog_state) {
		case BELLE_SIP_DIALOG_NULL: {
			op->base.root->callbacks.subscribe_presence_received(op,sal_op_get_from(op));
			break;
		}
		case BELLE_SIP_DIALOG_EARLY:
			ms_error("unexpected method [%s] for dialog [%p] in state BELLE_SIP_DIALOG_EARLY ",method,op->dialog);
			break;

		case BELLE_SIP_DIALOG_CONFIRMED:
			if (strcmp("NOTIFY",method)==0) {
				handle_notify(op,req);
			} else if (strcmp("SUBSCRIBE",method)==0) {
				/*either a refresh or an unsubscribe*/
				if (expires && belle_sip_header_expires_get_expires(expires)>0) {
					op->base.root->callbacks.subscribe_presence_received(op,sal_op_get_from(op));
				} 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);
				}
			}
			break;
		default: 
			ms_error("unexpected dialog state [%s]",belle_sip_dialog_state_to_string(dialog_state));
			break;
	}
}
Beispiel #3
0
static void register_refresher_listener (belle_sip_refresher_t* refresher
		,void* user_pointer
		,unsigned int status_code
		,const char* reason_phrase) {
	SalOp* op = (SalOp*)user_pointer;
	belle_sip_response_t* response=belle_sip_transaction_get_response(BELLE_SIP_TRANSACTION(belle_sip_refresher_get_transaction(refresher)));
	ms_message("Register refresher [%i] reason [%s] for proxy [%s]",status_code,reason_phrase,sal_op_get_proxy(op));

	if (belle_sip_refresher_get_auth_events(refresher)) {
		if (op->auth_info) sal_auth_info_delete(op->auth_info);
		/*only take first one for now*/
		op->auth_info=sal_auth_info_create((belle_sip_auth_event_t*)(belle_sip_refresher_get_auth_events(refresher)->data));
	}
	sal_error_info_set(&op->error_info,SalReasonUnknown,status_code,reason_phrase,NULL);
	if (status_code>=200){
		sal_op_assign_recv_headers(op,(belle_sip_message_t*)response);
	}
	if(status_code == 200) {
		/*check service route rfc3608*/
		belle_sip_header_service_route_t* service_route;
		belle_sip_header_address_t* service_route_address=NULL;
		belle_sip_header_contact_t *contact = belle_sip_refresher_get_contact(refresher);
		if ((service_route=belle_sip_message_get_header_by_type(response,belle_sip_header_service_route_t))) {
			service_route_address=belle_sip_header_address_create(NULL,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(service_route)));
		}
		sal_op_set_service_route(op,(const SalAddress*)service_route_address);
		if (service_route_address) belle_sip_object_unref(service_route_address);

		sal_remove_pending_auth(op->base.root,op); /*just in case*/
		if (contact) {
			sal_op_set_contact_address(op,(SalAddress*)(BELLE_SIP_HEADER_ADDRESS(contact))); /*update contact with real value*/
		}
		op->base.root->callbacks.register_success(op,belle_sip_refresher_get_expires(op->refresher)>0);
	} else if (status_code>=400) {
		/* from rfc3608, 6.1.
				If the UA refreshes the registration, the stored value of the Service-
				   Route is updated according to the Service-Route header field of the
				   latest 200 class response.  If there is no Service-Route header field
				   in the response, the UA clears any service route for that address-
				   of-record previously stored by the UA.  If the re-registration
				   request is refused or if an existing registration expires and the UA
				   chooses not to re-register, the UA SHOULD discard any stored service
				   route for that address-of-record. */
		sal_op_set_service_route(op,NULL);
		sal_op_ref(op); /*take a ref while invoking the callback to make sure the operations done after are valid*/
		op->base.root->callbacks.register_failure(op);
		if (op->state!=SalOpStateTerminated && op->auth_info) {
			/*add pending auth*/
			sal_add_pending_auth(op->base.root,op);
			if (status_code==403 || status_code==401 || status_code==407 )
				op->base.root->callbacks.auth_failure(op,op->auth_info);
		}
		sal_op_unref(op);
	}
}
Beispiel #4
0
void set_or_update_dialog(SalOp* op, belle_sip_dialog_t* dialog) {
	ms_message("op [%p] : set_or_update_dialog() current=[%p] new=[%p]",op,op->dialog,dialog);
	sal_op_ref(op);
	if (op->dialog!=dialog){
		if (op->dialog){
			/*FIXME: shouldn't we delete unconfirmed dialogs ?*/
			unlink_op_with_dialog(op,op->dialog);
			op->dialog=NULL;
		}
		if (dialog) {
			op->dialog=link_op_with_dialog(op,dialog);
			belle_sip_dialog_enable_pending_trans_checking(dialog,op->base.root->pending_trans_checking);
		}
	}
	sal_op_unref(op);
}
Beispiel #5
0
void set_or_update_dialog(SalOp* op, belle_sip_dialog_t* dialog) {
	/*check if dialog has changed*/
	if (dialog && dialog != op->dialog) {
		ms_message("Dialog set from [%p] to [%p] for op [%p]",op->dialog,dialog,op);
		/*fixme, shouldn't we cancel previous dialog*/
		if (op->dialog) {
			belle_sip_dialog_set_application_data(op->dialog,NULL);
			belle_sip_object_unref(op->dialog);
			sal_op_unref(op);
		}
		op->dialog=dialog;
		belle_sip_dialog_set_application_data(op->dialog,op);
		sal_op_ref(op);
		belle_sip_object_ref(op->dialog);
	}
}
Beispiel #6
0
static void handle_notify(SalOp *op, belle_sip_request_t *req, const char *eventname, SalBody * body){
	SalSubscribeStatus sub_state;
	belle_sip_header_subscription_state_t* subscription_state_header=belle_sip_message_get_header_by_type(req,belle_sip_header_subscription_state_t);
	belle_sip_response_t* resp;
	belle_sip_server_transaction_t* server_transaction = op->pending_server_trans;
	
	if (!subscription_state_header || strcasecmp(BELLE_SIP_SUBSCRIPTION_STATE_TERMINATED,belle_sip_header_subscription_state_get_state(subscription_state_header)) ==0) {
		sub_state=SalSubscribeTerminated;
		ms_message("Outgoing subscription terminated by remote [%s]",sal_op_get_to(op));
	} else
		sub_state=SalSubscribeActive;
	sal_op_ref(op);
	op->base.root->callbacks.notify(op,sub_state,eventname,body);
	resp=sal_op_create_response_from_request(op,req,200);
	belle_sip_server_transaction_send_response(server_transaction,resp);
	sal_op_unref(op);
}
Beispiel #7
0
static belle_sip_dialog_t *link_op_with_dialog(SalOp *op, belle_sip_dialog_t* dialog){
	belle_sip_dialog_set_application_data(dialog,sal_op_ref(op));
	belle_sip_object_ref(dialog);
	return dialog;
}
Beispiel #8
0
static int _sal_op_send_request_with_contact(SalOp* op, belle_sip_request_t* request, bool_t add_contact) {
	belle_sip_client_transaction_t* client_transaction;
	belle_sip_provider_t* prov=op->base.root->prov;
	belle_sip_uri_t* outbound_proxy=NULL;
	belle_sip_header_contact_t* contact;
	int result =-1;
	belle_sip_uri_t *next_hop_uri=NULL;

	if (add_contact && !belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request),belle_sip_header_contact_t)) {
		contact = sal_op_create_contact(op);
		belle_sip_message_set_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_HEADER(contact));
	} /*keep existing*/

	_sal_op_add_custom_headers(op, (belle_sip_message_t*)request);

	if (!op->dialog || belle_sip_dialog_get_state(op->dialog) == BELLE_SIP_DIALOG_NULL) {
		/*don't put route header if  dialog is in confirmed state*/
		const MSList *elem=sal_op_get_route_addresses(op);
		const char *transport;
		const char *method=belle_sip_request_get_method(request);
		belle_sip_listening_point_t *udplp=belle_sip_provider_get_listening_point(prov,"UDP");

		if (elem) {
			outbound_proxy=belle_sip_header_address_get_uri((belle_sip_header_address_t*)elem->data);
			next_hop_uri=outbound_proxy;
		}else{
			next_hop_uri=(belle_sip_uri_t*)belle_sip_object_clone((belle_sip_object_t*)belle_sip_request_get_uri(request));
		}
		transport=belle_sip_uri_get_transport_param(next_hop_uri);
		if (transport==NULL){
			/*compatibility mode: by default it should be udp as not explicitely set and if no udp listening point is available, then use
			 * the first available transport*/
			if (!belle_sip_uri_is_secure(next_hop_uri)){
				if (udplp==NULL){
					if (belle_sip_provider_get_listening_point(prov,"TCP")!=NULL){
						transport="tcp";
					}else if (belle_sip_provider_get_listening_point(prov,"TLS")!=NULL ){
						transport="tls";
					}
				}
				if (transport){
					belle_sip_message("Transport is not specified, using %s because UDP is not available.",transport);
					belle_sip_uri_set_transport_param(next_hop_uri,transport);
				}
			}
		}else{
#ifdef TUNNEL_ENABLED
			if (udplp && BELLE_SIP_OBJECT_IS_INSTANCE_OF(udplp,belle_sip_tunnel_listening_point_t)){
				/* our tunnel mode only supports UDP. Force transport to be set to UDP */
				belle_sip_uri_set_transport_param(next_hop_uri,"udp");
			}
#endif
		}
		if ((strcmp(method,"REGISTER")==0 || strcmp(method,"SUBSCRIBE")==0) && transport &&
			(strcasecmp(transport,"TCP")==0 || strcasecmp(transport,"TLS")==0)){
			/*RFC 5923: add 'alias' parameter to tell the server that we want it to keep the connection for future requests*/
			belle_sip_header_via_t *via=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request),belle_sip_header_via_t);
			belle_sip_parameters_set_parameter(BELLE_SIP_PARAMETERS(via),"alias",NULL);
		}
	}

	client_transaction = belle_sip_provider_create_client_transaction(prov,request);
	belle_sip_transaction_set_application_data(BELLE_SIP_TRANSACTION(client_transaction),sal_op_ref(op));
	if (op->pending_client_trans) belle_sip_object_unref(op->pending_client_trans);
	op->pending_client_trans=client_transaction; /*update pending inv for being able to cancel*/
	belle_sip_object_ref(op->pending_client_trans);

	if (belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request),belle_sip_header_user_agent_t)==NULL)
		belle_sip_message_add_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_HEADER(op->base.root->user_agent));

	if (!belle_sip_message_get_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_AUTHORIZATION)
		&& !belle_sip_message_get_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_PROXY_AUTHORIZATION)) {
		/*hmm just in case we already have authentication param in cache*/
		belle_sip_provider_add_authorization(op->base.root->prov,request,NULL,NULL,NULL,op->base.realm);
	}
	result = belle_sip_client_transaction_send_request_to(client_transaction,next_hop_uri/*might be null*/);

	/*update call id if not set yet for this OP*/
	if (result == 0 && !op->base.call_id) {
		op->base.call_id=ms_strdup(belle_sip_header_call_id_get_call_id(BELLE_SIP_HEADER_CALL_ID(belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(request), belle_sip_header_call_id_t))));
	}

	return result;

}
Beispiel #9
0
void sal_add_pending_auth(Sal *sal, SalOp *op){
	if (ms_list_find(sal->pending_auths,op)==NULL){
		sal->pending_auths=ms_list_append(sal->pending_auths,sal_op_ref(op));
	}
}
Beispiel #10
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);

}
Beispiel #11
0
static void call_process_response(void *op_base, const belle_sip_response_event_t *event){
	SalOp* op = (SalOp*)op_base;
	belle_sip_request_t* ack;
	belle_sip_dialog_state_t dialog_state;
	belle_sip_client_transaction_t* client_transaction = belle_sip_response_event_get_client_transaction(event);
	belle_sip_request_t* req;
	belle_sip_response_t* response=belle_sip_response_event_get_response(event);
	int code = belle_sip_response_get_status_code(response);
	belle_sip_header_content_type_t *header_content_type=NULL;
	belle_sip_dialog_t *dialog=belle_sip_response_event_get_dialog(event);
	const char *method;

	if (!client_transaction) {
		ms_warning("Discarding stateless response [%i] on op [%p]",code,op);
		return;
	}
	req=belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(client_transaction));
	set_or_update_dialog(op,dialog);
	dialog_state=dialog ? belle_sip_dialog_get_state(dialog) : BELLE_SIP_DIALOG_NULL;
	method=belle_sip_request_get_method(req);
	ms_message("Op [%p] receiving call response [%i], dialog is [%p] in state [%s]",op,code,dialog,belle_sip_dialog_state_to_string(dialog_state));
	/*to make sure no cb will destroy op*/
	sal_op_ref(op);
	switch(dialog_state) {
		case BELLE_SIP_DIALOG_NULL:
		case BELLE_SIP_DIALOG_EARLY: {
			if (strcmp("INVITE",method)==0 ) {
				if (op->state == SalOpStateTerminating) {
					/*check if CANCEL was sent before*/
					if (strcmp("CANCEL",belle_sip_request_get_method(belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(op->pending_client_trans))))!=0) {
						/*it wasn't sent */
						if (code<200) {
							cancelling_invite(op);
						}else{
							/* no need to send the INVITE because the UAS rejected the INVITE*/
							if (op->dialog==NULL) call_set_released(op);
						}
					} else {
						/*it was sent already, so just expect the 487 or any error response to send the call_released() notification*/
						if (code>=300){
							if (op->dialog==NULL) call_set_released(op);
						}
					}
				} else if (code >= 180 && code<200) {
					belle_sip_response_t *prev_response=belle_sip_object_data_get(BELLE_SIP_OBJECT(dialog),"early_response");
					if (!prev_response || code>belle_sip_response_get_status_code(prev_response)){
						handle_sdp_from_response(op,response);
						op->base.root->callbacks.call_ringing(op);
					}
					belle_sip_object_data_set(BELLE_SIP_OBJECT(dialog),"early_response",belle_sip_object_ref(response),belle_sip_object_unref);
				} else if (code>=300){
					call_set_error(op,response);
					if (op->dialog==NULL) call_set_released(op);
				}
			} else if (code >=200
						&& code<300
						&& strcmp("UPDATE",belle_sip_request_get_method(req))==0) {
					handle_sdp_from_response(op,response);
					op->base.root->callbacks.call_accepted(op);
			}
		}
		break;
		case BELLE_SIP_DIALOG_CONFIRMED: {
			switch (op->state) {
				case SalOpStateEarly:/*invite case*/
				case SalOpStateActive: /*re-invite, INFO, UPDATE case*/
					if (strcmp("INVITE",method)==0){
						if (code >=200 && code<300) {
							handle_sdp_from_response(op,response);
							ack=belle_sip_dialog_create_ack(op->dialog,belle_sip_dialog_get_local_seq_number(op->dialog));
							if (ack==NULL) {
								ms_error("This call has been already terminated.");
								return ;
							}
							if (op->sdp_answer){
								set_sdp(BELLE_SIP_MESSAGE(ack),op->sdp_answer);
								belle_sip_object_unref(op->sdp_answer);
								op->sdp_answer=NULL;
							}
							belle_sip_dialog_send_ack(op->dialog,ack);
							op->base.root->callbacks.call_accepted(op); /*INVITE*/
							op->state=SalOpStateActive;
						}else if (code >= 300){
							call_set_error(op,response);
						}
					}else if (strcmp("INFO",method)==0){
						if (code == 491
							&& (header_content_type = belle_sip_message_get_header_by_type(req,belle_sip_header_content_type_t))
							&& strcmp("application",belle_sip_header_content_type_get_type(header_content_type))==0
							&& strcmp("media_control+xml",belle_sip_header_content_type_get_subtype(header_content_type))==0) {
						unsigned int retry_in =1000*((float)rand()/RAND_MAX);
						belle_sip_source_t *s=sal_create_timer(op->base.root,vfu_retry,sal_op_ref(op), retry_in, "vfu request retry");
						ms_message("Rejected vfu request on op [%p], just retry in [%ui] ms",op,retry_in);
						belle_sip_object_unref(s);
						}else {
								/*ignoring*/
						}
					}else if (strcmp("UPDATE",method)==0){
						op->base.root->callbacks.call_accepted(op); /*INVITE*/
					}
				break;
				case SalOpStateTerminating:
					sal_op_send_request(op,belle_sip_dialog_create_request(op->dialog,"BYE"));
				break;
				case SalOpStateTerminated:
				default:
					ms_error("Call op [%p] receives unexpected answer [%i] while in state [%s].",op,code, sal_op_state_to_string(op->state));
			}
		}
		break;
		case BELLE_SIP_DIALOG_TERMINATED: {
			if (code >= 300){
				call_set_error(op,response);
			}
		}
		break;
		default: {
			ms_error("call op [%p] receive answer [%i] not implemented",op,code);
		}
		break;
	}
	sal_op_unref(op);
}
Beispiel #12
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);

}