/* returns the SalOp of a call that should be replaced by h, if any */ SalOp *sal_call_get_replaces(SalOp *op){ if (op && op->replaces){ /*rfc3891 3. User Agent Server Behavior: Receiving a Replaces Header The Replaces header contains information used to match an existing SIP dialog (call-id, to-tag, and from-tag). Upon receiving an INVITE with a Replaces header, the User Agent (UA) attempts to match this information with a confirmed or early dialog. The User Agent Server (UAS) matches the to-tag and from-tag parameters as if they were tags present in an incoming request. In other words, the to-tag parameter is compared to the local tag, and the from-tag parameter is compared to the remote tag. */ belle_sip_dialog_t* dialog=belle_sip_provider_find_dialog(op->base.root->prov ,belle_sip_header_replaces_get_call_id(op->replaces) ,belle_sip_header_replaces_get_to_tag(op->replaces) ,belle_sip_header_replaces_get_from_tag(op->replaces)); if (!dialog) { /*for backward compatibility with liblinphone <= 3.10.2-243 */ dialog=belle_sip_provider_find_dialog(op->base.root->prov ,belle_sip_header_replaces_get_call_id(op->replaces) ,belle_sip_header_replaces_get_from_tag(op->replaces) ,belle_sip_header_replaces_get_to_tag(op->replaces)); } if (dialog) { return (SalOp*)belle_sip_dialog_get_application_data(dialog); } } return NULL; }
static void process_dialog_terminated(void *sal, const belle_sip_dialog_terminated_event_t *event){ belle_sip_dialog_t* dialog = belle_sip_dialog_terminated_event_get_dialog(event); SalOp* op = belle_sip_dialog_get_application_data(dialog); if (op && op->callbacks.process_dialog_terminated) { op->callbacks.process_dialog_terminated(op,event); } else { ms_error("sal process_dialog_terminated no op found for this dialog [%p], ignoring",dialog); } }
/* returns the SalOp of a call that should be replaced by h, if any */ SalOp *sal_call_get_replaces(SalOp *op){ if (op && op->replaces){ belle_sip_dialog_t* dialog=belle_sip_provider_find_dialog(op->base.root->prov ,belle_sip_header_replaces_get_call_id(op->replaces) ,belle_sip_header_replaces_get_from_tag(op->replaces) ,belle_sip_header_replaces_get_to_tag(op->replaces)); if (dialog) { return (SalOp*)belle_sip_dialog_get_application_data(dialog); } } return NULL; }
void belle_sip_client_transaction_notify_response(belle_sip_client_transaction_t *t, belle_sip_response_t *resp){ belle_sip_transaction_t *base=(belle_sip_transaction_t*)t; belle_sip_request_t* req = belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(t)); const char* method = belle_sip_request_get_method(req); belle_sip_response_event_t event; belle_sip_dialog_t *dialog=base->dialog; int status_code = belle_sip_response_get_status_code(resp); if (base->last_response) belle_sip_object_unref(base->last_response); base->last_response=(belle_sip_response_t*)belle_sip_object_ref(resp); if (dialog){ if (status_code>=200 && status_code<300 && strcmp(method,"INVITE")==0 && (dialog->state==BELLE_SIP_DIALOG_EARLY || dialog->state==BELLE_SIP_DIALOG_CONFIRMED)){ /*make sure this response matches the current dialog, or creates a new one*/ if (!belle_sip_dialog_match(dialog,(belle_sip_message_t*)resp,FALSE)){ dialog=belle_sip_provider_create_dialog_internal(t->base.provider,BELLE_SIP_TRANSACTION(t),FALSE);/*belle_sip_dialog_new(base);*/ if (dialog){ /*copy userdata to avoid application from being lost*/ belle_sip_dialog_set_application_data(dialog,belle_sip_dialog_get_application_data(base->dialog)); belle_sip_message("Handling response creating a new dialog !"); } } } } else if (should_dialog_be_created(t,resp)) { dialog=belle_sip_provider_create_dialog_internal(t->base.provider,BELLE_SIP_TRANSACTION(t),FALSE); } if (dialog && belle_sip_dialog_update(dialog,BELLE_SIP_TRANSACTION(t),FALSE)) { /* retransmition, just return*/ belle_sip_message("[%p] is a 200 ok retransmition on dialog [%p], skiping",resp,dialog); return; } event.source=(belle_sip_object_t*)base->provider; event.client_transaction=t; event.dialog=dialog; event.response=(belle_sip_response_t*)resp; BELLE_SIP_PROVIDER_INVOKE_LISTENERS_FOR_TRANSACTION(((belle_sip_transaction_t*)t),process_response_event,&event); /*check that 200Ok for INVITEs have been acknowledged by listener*/ if (dialog && strcmp(method,"INVITE")==0) belle_sip_dialog_check_ack_sent(dialog); }
static void process_request_event(void *sal, const belle_sip_request_event_t *event) { SalOp* op=NULL; belle_sip_request_t* req = belle_sip_request_event_get_request(event); belle_sip_dialog_t* dialog=belle_sip_request_event_get_dialog(event); belle_sip_header_address_t* origin_address; belle_sip_header_address_t* address; belle_sip_header_from_t* from_header; belle_sip_header_to_t* to; belle_sip_response_t* resp; belle_sip_header_t *evh; const char *method=belle_sip_request_get_method(req); from_header=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_from_t); if (dialog) { op=(SalOp*)belle_sip_dialog_get_application_data(dialog); if (op==NULL || op->state==SalOpStateTerminated){ ms_warning("Receiving request for null or terminated op [%p], ignored",op); return; } }else if (strcmp("INVITE",method)==0) { op=sal_op_new((Sal*)sal); op->dir=SalOpDirIncoming; sal_op_call_fill_cbs(op); }else if ((strcmp("SUBSCRIBE",method)==0 || strcmp("NOTIFY",method)==0) && (evh=belle_sip_message_get_header(BELLE_SIP_MESSAGE(req),"Event"))!=NULL) { op=sal_op_new((Sal*)sal); op->dir=SalOpDirIncoming; if (strncmp(belle_sip_header_get_unparsed_value(evh),"presence",strlen("presence"))==0){ sal_op_presence_fill_cbs(op); }else sal_op_subscribe_fill_cbs(op); }else if (strcmp("MESSAGE",method)==0) { op=sal_op_new((Sal*)sal); op->dir=SalOpDirIncoming; sal_op_message_fill_cbs(op); }else if (strcmp("OPTIONS",method)==0) { resp=belle_sip_response_create_from_request(req,200); belle_sip_provider_send_response(((Sal*)sal)->prov,resp); return; }else if (strcmp("INFO",method)==0) { resp=belle_sip_response_create_from_request(req,481);/*INFO out of call dialogs are not allowed*/ belle_sip_provider_send_response(((Sal*)sal)->prov,resp); return; }else if (strcmp("BYE",method)==0) { resp=belle_sip_response_create_from_request(req,481);/*out of dialog BYE */ belle_sip_provider_send_response(((Sal*)sal)->prov,resp); return; }else { ms_error("sal process_request_event not implemented yet for method [%s]",belle_sip_request_get_method(req)); resp=belle_sip_response_create_from_request(req,501); belle_sip_provider_send_response(((Sal*)sal)->prov,resp); return; } if (!op->base.from_address) { address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header))); sal_op_set_from_address(op,(SalAddress*)address); belle_sip_object_unref(address); } if (!op->base.to_address) { to=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_to_t); address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(to)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(to))); sal_op_set_to_address(op,(SalAddress*)address); belle_sip_object_unref(address); } if (!op->base.origin) { /*set origin uri*/ origin_address=belle_sip_header_address_create(NULL,belle_sip_request_extract_origin(req)); __sal_op_set_network_origin_address(op,(SalAddress*)origin_address); belle_sip_object_unref(origin_address); } if (!op->base.remote_ua) { sal_op_set_remote_ua(op,BELLE_SIP_MESSAGE(req)); } if (!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(req), belle_sip_header_call_id_t)))); } /*It is worth noting that proxies can (and will) remove this header field*/ sal_op_set_privacy_from_message(op,(belle_sip_message_t*)req); sal_op_assign_recv_headers(op,(belle_sip_message_t*)req); if (op->callbacks.process_request_event) { op->callbacks.process_request_event(op,event); } else { ms_error("sal process_request_event not implemented yet"); } }
static void process_request_event(void *ud, const belle_sip_request_event_t *event) { Sal *sal=(Sal*)ud; SalOp* op=NULL; belle_sip_request_t* req = belle_sip_request_event_get_request(event); belle_sip_dialog_t* dialog=belle_sip_request_event_get_dialog(event); belle_sip_header_address_t* origin_address; belle_sip_header_address_t* address=NULL; belle_sip_header_from_t* from_header; belle_sip_header_to_t* to; belle_sip_response_t* resp; belle_sip_header_t *evh; const char *method=belle_sip_request_get_method(req); belle_sip_header_contact_t* remote_contact = belle_sip_message_get_header_by_type(req, belle_sip_header_contact_t); from_header=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_from_t); if (dialog) { op=(SalOp*)belle_sip_dialog_get_application_data(dialog); if (op == NULL && strcmp("NOTIFY",method) == 0) { /*special case for Dialog created by notify mathing subscribe*/ belle_sip_transaction_t * sub_trans = belle_sip_dialog_get_last_transaction(dialog); op = (SalOp*)belle_sip_transaction_get_application_data(sub_trans); } if (op==NULL || op->state==SalOpStateTerminated){ ms_warning("Receiving request for null or terminated op [%p], ignored",op); return; } }else{ /*handle the case where we are receiving a request with to tag but it is not belonging to any dialog*/ belle_sip_header_to_t *to = belle_sip_message_get_header_by_type(req, belle_sip_header_to_t); if ((strcmp("INVITE",method)==0 || strcmp("NOTIFY",method)==0) && (belle_sip_header_to_get_tag(to) != NULL)) { ms_warning("Receiving %s with to-tag but no know dialog here. Rejecting.", method); resp=belle_sip_response_create_from_request(req,481); belle_sip_provider_send_response(sal->prov,resp); return; /* by default (eg. when a to-tag is present), out of dialog ACK are automatically handled in lower layers (belle-sip) but in case it misses, it will be forwarded to us */ } else if (strcmp("ACK",method)==0 && (belle_sip_header_to_get_tag(to) == NULL)) { ms_warning("Receiving ACK without to-tag but no know dialog here. Ignoring"); return; } if (strcmp("INVITE",method)==0) { op=sal_op_new(sal); op->dir=SalOpDirIncoming; sal_op_call_fill_cbs(op); }else if ((strcmp("SUBSCRIBE",method)==0 || strcmp("NOTIFY",method)==0) && (evh=belle_sip_message_get_header(BELLE_SIP_MESSAGE(req),"Event"))!=NULL) { op=sal_op_new(sal); op->dir=SalOpDirIncoming; if (strncmp(belle_sip_header_get_unparsed_value(evh),"presence",strlen("presence"))==0){ sal_op_presence_fill_cbs(op); }else sal_op_subscribe_fill_cbs(op); }else if (strcmp("MESSAGE",method)==0) { op=sal_op_new(sal); op->dir=SalOpDirIncoming; sal_op_message_fill_cbs(op); }else if (strcmp("OPTIONS",method)==0) { resp=belle_sip_response_create_from_request(req,200); belle_sip_provider_send_response(sal->prov,resp); return; }else if (strcmp("INFO",method)==0) { resp=belle_sip_response_create_from_request(req,481);/*INFO out of call dialogs are not allowed*/ belle_sip_provider_send_response(sal->prov,resp); return; }else if (strcmp("BYE",method)==0) { resp=belle_sip_response_create_from_request(req,481);/*out of dialog BYE */ belle_sip_provider_send_response(sal->prov,resp); return; }else if (strcmp("CANCEL",method)==0) { resp=belle_sip_response_create_from_request(req,481);/*out of dialog CANCEL */ belle_sip_provider_send_response(sal->prov,resp); return; }else if (sal->enable_test_features && strcmp("PUBLISH",method)==0) { resp=belle_sip_response_create_from_request(req,200);/*out of dialog PUBLISH */ belle_sip_message_add_header((belle_sip_message_t*)resp,belle_sip_header_create("SIP-Etag","4441929FFFZQOA")); belle_sip_provider_send_response(sal->prov,resp); return; }else { ms_error("sal process_request_event not implemented yet for method [%s]",belle_sip_request_get_method(req)); resp=belle_sip_response_create_from_request(req,405); belle_sip_message_add_header(BELLE_SIP_MESSAGE(resp) ,BELLE_SIP_HEADER(belle_sip_header_allow_create("INVITE, CANCEL, ACK, BYE, SUBSCRIBE, NOTIFY, MESSAGE, OPTIONS, INFO"))); belle_sip_provider_send_response(sal->prov,resp); return; } } if (!op->base.from_address) { if (belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header))) address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(from_header))); else if ((belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(from_header)))) address=belle_sip_header_address_create2(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(from_header)) ,belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(from_header))); else ms_error("Cannot not find from uri from request [%p]",req); sal_op_set_from_address(op,(SalAddress*)address); belle_sip_object_unref(address); } if( remote_contact ){ __sal_op_set_remote_contact(op, belle_sip_header_get_unparsed_value(BELLE_SIP_HEADER(remote_contact))); } if (!op->base.to_address) { to=belle_sip_message_get_header_by_type(BELLE_SIP_MESSAGE(req),belle_sip_header_to_t); if (belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(to))) address=belle_sip_header_address_create(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(to)) ,belle_sip_header_address_get_uri(BELLE_SIP_HEADER_ADDRESS(to))); else if ((belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(to)))) address=belle_sip_header_address_create2(belle_sip_header_address_get_displayname(BELLE_SIP_HEADER_ADDRESS(to)) ,belle_sip_header_address_get_absolute_uri(BELLE_SIP_HEADER_ADDRESS(to))); else ms_error("Cannot not find to uri from request [%p]",req); sal_op_set_to_address(op,(SalAddress*)address); belle_sip_object_unref(address); } if (!op->base.origin) { /*set origin uri*/ origin_address=belle_sip_header_address_create(NULL,belle_sip_request_extract_origin(req)); __sal_op_set_network_origin_address(op,(SalAddress*)origin_address); belle_sip_object_unref(origin_address); } if (!op->base.remote_ua) { sal_op_set_remote_ua(op,BELLE_SIP_MESSAGE(req)); } if (!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(req), belle_sip_header_call_id_t)))); } /*It is worth noting that proxies can (and will) remove this header field*/ sal_op_set_privacy_from_message(op,(belle_sip_message_t*)req); sal_op_assign_recv_headers(op,(belle_sip_message_t*)req); if (op->callbacks && op->callbacks->process_request_event) { op->callbacks->process_request_event(op,event); } else { ms_error("sal process_request_event not implemented yet"); } }