static void _belle_sip_dialog_process_queue(belle_sip_dialog_t* dialog){
belle_sip_client_transaction_t *tr=NULL;
if (dialog->state==BELLE_SIP_DIALOG_TERMINATED || belle_sip_dialog_request_pending(dialog) || dialog->needs_ack) goto end;
dialog->queued_ct=belle_sip_list_pop_front(dialog->queued_ct,(void**)&tr);
if (tr){
belle_sip_message("Dialog [%p]: sending queued request.",dialog);
belle_sip_client_transaction_send_request(tr);
belle_sip_object_unref(tr);
}
end:
belle_sip_object_unref(dialog);
}
int belle_sip_dialog_is_authorized_transaction(const belle_sip_dialog_t *dialog,const char* method) {
if (belle_sip_dialog_request_pending(dialog)){
const char* last_transaction_request;
if (strcasecmp(method,"BYE")==0)
return TRUE; /*don't reject a BYE*/
last_transaction_request = belle_sip_request_get_method(belle_sip_transaction_get_request(dialog->last_transaction));
if (BELLE_SIP_OBJECT_IS_INSTANCE_OF(dialog->last_transaction,belle_sip_client_transaction_t)
&& strcmp(last_transaction_request,"SUBSCRIBE")==0 && strcmp(method,"NOTIFY")==0){
/*stupid as it is, you have to accept a NOTIFY for a SUBSCRIBE for which no answer is received yet...*/
return TRUE;
}
if (strcmp(last_transaction_request,"INVITE")==0 && (strcmp(method,"PRACK")==0 || strcmp(method,"UPDATE")==0)){
/*PRACK /UPDATE needs to be sent or received during reINVITEs.*/
return TRUE;
}
return FALSE;
} else {
return TRUE;
}
}
int belle_sip_client_transaction_send_request_to(belle_sip_client_transaction_t *t,belle_sip_uri_t* outbound_proxy) {
belle_sip_channel_t *chan;
belle_sip_provider_t *prov=t->base.provider;
belle_sip_dialog_t *dialog=t->base.dialog;
belle_sip_request_t *req=t->base.request;
int result=-1;
if (t->base.state!=BELLE_SIP_TRANSACTION_INIT){
belle_sip_error("belle_sip_client_transaction_send_request: bad state.");
return -1;
}
/*check uris components compliance*/
if (!belle_sip_request_check_uris_components(t->base.request)) {
belle_sip_error("belle_sip_client_transaction_send_request: bad request for transaction [%p]",t);
return -1;
}
/*store preset route for future use by refresher*/
if (outbound_proxy){
t->preset_route=outbound_proxy;
belle_sip_object_ref(t->preset_route);
}
if (t->base.sent_by_dialog_queue){
/*it can be sent immediately, so update the request with latest cseq and route_set */
/*update route and contact just in case they changed*/
belle_sip_dialog_update_request(dialog,req);
} else if (t->base.request->dialog_queued){
/*this request was created by belle_sip_dialog_create_queued_request().*/
if (belle_sip_dialog_request_pending(dialog) || dialog->queued_ct!=NULL){
/*it cannot be sent immediately, queue the transaction into dialog*/
belle_sip_message("belle_sip_client_transaction_send_request(): transaction [%p], cannot send request now because dialog is busy"
" or other transactions are queued, so queuing into dialog.",t);
belle_sip_dialog_queue_client_transaction(dialog,t);
return 0;
}
belle_sip_dialog_update_request(dialog,req);
}
if (dialog){
belle_sip_dialog_update(dialog,(belle_sip_transaction_t*)t,BELLE_SIP_OBJECT_IS_INSTANCE_OF(t,belle_sip_server_transaction_t));
}
if (!t->next_hop) {
if (t->preset_route) {
t->next_hop=belle_sip_hop_new_from_uri(t->preset_route);
} else {
t->next_hop = belle_sip_stack_get_next_hop(prov->stack,t->base.request);
}
belle_sip_object_ref(t->next_hop);
} else {
/*next hop already preset, probably in case of CANCEL*/
}
belle_sip_provider_add_client_transaction(t->base.provider,t); /*add it in any case*/
chan=belle_sip_provider_get_channel(prov,t->next_hop);
if (chan){
belle_sip_object_ref(chan);
belle_sip_channel_add_listener(chan,BELLE_SIP_CHANNEL_LISTENER(t));
t->base.channel=chan;
if (belle_sip_channel_get_state(chan)==BELLE_SIP_CHANNEL_INIT){
belle_sip_message("belle_sip_client_transaction_send_request(): waiting channel to be ready");
belle_sip_channel_prepare(chan);
/*the channel will notify us when it is ready*/
} else if (belle_sip_channel_get_state(chan)==BELLE_SIP_CHANNEL_READY){
/*otherwise we can send immediately*/
BELLE_SIP_OBJECT_VPTR(t,belle_sip_client_transaction_t)->send_request(t);
}
result=0;
}else {
belle_sip_error("belle_sip_client_transaction_send_request(): no channel available");
belle_sip_transaction_terminate(BELLE_SIP_TRANSACTION(t));
result=-1;
}
return result;
}
bool_t sal_op_is_idle(SalOp *op){
if (op->dialog){
return !belle_sip_dialog_request_pending(op->dialog);
}
return TRUE;
}
static int belle_sip_refresher_refresh_internal(belle_sip_refresher_t* refresher, int expires, int auth_mandatory, belle_sip_list_t** auth_infos, belle_sip_uri_t *requri) {
belle_sip_request_t*old_request=belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(refresher->transaction));
belle_sip_response_t*old_response=belle_sip_transaction_get_response(BELLE_SIP_TRANSACTION(refresher->transaction));
belle_sip_dialog_t* dialog = refresher->dialog;
belle_sip_client_transaction_t* client_transaction;
belle_sip_request_t* request;
belle_sip_header_expires_t* expires_header;
belle_sip_uri_t* preset_route=refresher->transaction->preset_route;
belle_sip_provider_t* prov=refresher->transaction->base.provider;
belle_sip_header_contact_t* contact;
/*first remove timer if any*/
if (expires >=0) {
refresher->target_expires=expires;
} else {
/*-1 keep last value*/
}
if (!dialog) {
const belle_sip_transaction_state_t state=belle_sip_transaction_get_state(BELLE_SIP_TRANSACTION(refresher->transaction));
/*create new request*/
if (belle_sip_transaction_state_is_transient(state)) {
/*operation pending, cannot update authorization headers*/
belle_sip_header_cseq_t* cseq;
belle_sip_message("Refresher [%p] already has transaction [%p] in state [%s]" ,refresher
,refresher->transaction
,belle_sip_transaction_state_to_string(state));
if (strcmp(belle_sip_request_get_method(old_request),"PUBLISH")==0) {
belle_sip_message("Refresher [%p] new publish is delayed to end of ongoing transaction" ,refresher);
refresher->publish_pending = TRUE;
return 0;
} else {
request=belle_sip_request_clone_with_body(belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(refresher->transaction)));
cseq=belle_sip_message_get_header_by_type(request,belle_sip_header_cseq_t);
belle_sip_header_cseq_set_seq_number(cseq,belle_sip_header_cseq_get_seq_number(cseq)+1);
}
} else {
request=belle_sip_client_transaction_create_authenticated_request(refresher->transaction,auth_infos,refresher->realm);
}
if (requri){
/*case where we are redirected*/
belle_sip_request_set_uri(request,requri);
/*remove auth headers, they are not valid for new destination*/
belle_sip_message_remove_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_AUTHORIZATION);
belle_sip_message_remove_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_PROXY_AUTHORIZATION);
}
} else {
switch (belle_sip_dialog_get_state(dialog)) {
case BELLE_SIP_DIALOG_CONFIRMED: {
if (belle_sip_dialog_request_pending(dialog)){
belle_sip_message("Cannot refresh now, there is a pending request in the dialog.");
return -1;
}
request=belle_sip_dialog_create_request_from(dialog,old_request);
if (strcmp(belle_sip_request_get_method(request),"SUBSCRIBE")==0) {
belle_sip_header_content_type_t *content_type;
/*put expire header*/
if (!(expires_header = belle_sip_message_get_header_by_type(request,belle_sip_header_expires_t))) {
expires_header = belle_sip_header_expires_new();
belle_sip_message_add_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_HEADER(expires_header));
}
if ((content_type = belle_sip_message_get_header_by_type(request, belle_sip_header_content_type_t))
&& strcasecmp("application", belle_sip_header_content_type_get_type(content_type)) == 0
&& strcasecmp("resource-lists+xml", belle_sip_header_content_type_get_subtype(content_type)) == 0) {
/*rfc5367
3.2. Subsequent SUBSCRIBE Requests
...
At this point, there are no semantics associated with resource-list
bodies in subsequent SUBSCRIBE requests (although future extensions
can define them). Therefore, UACs SHOULD NOT include resource-list
bodies in subsequent SUBSCRIBE requests to a resource list server.
*/
belle_sip_message("Removing body, content type and content length for refresher [%p]",refresher);
belle_sip_message_set_body(BELLE_SIP_MESSAGE(request), NULL, 0);
belle_sip_message_remove_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_CONTENT_TYPE);
belle_sip_message_remove_header(BELLE_SIP_MESSAGE(request),BELLE_SIP_CONTENT_LENGTH);
}
}
belle_sip_provider_add_authorization(prov,request,old_response,NULL,auth_infos,refresher->realm);
break;
}
case BELLE_SIP_DIALOG_TERMINATED: {
if (refresher->first_acknoleged_request) {
char tmp[11];
belle_sip_message("Dialog [%p] is in state terminated, recreating a new one for refresher [%p]",dialog,refresher);
request = refresher->first_acknoleged_request;
belle_sip_header_cseq_set_seq_number(belle_sip_message_get_header_by_type(request,belle_sip_header_cseq_t)
,20);
belle_sip_parameters_remove_parameter(BELLE_SIP_PARAMETERS(belle_sip_message_get_header_by_type(request,belle_sip_header_to_t)),"tag");
belle_sip_header_call_id_set_call_id( belle_sip_message_get_header_by_type(request,belle_sip_header_call_id_t)
, belle_sip_random_token(tmp,sizeof(tmp)));
break;
} /*else nop, error case*/
}
default: {
belle_sip_error("Unexpected dialog state [%s] for dialog [%p], cannot refresh [%s]"
,belle_sip_dialog_state_to_string(belle_sip_dialog_get_state(dialog))
,dialog
,belle_sip_request_get_method(old_request));
return -1;
}
}
}
if (auth_mandatory && auth_infos && belle_sip_list_find_custom(*auth_infos, unfilled_auth_info, NULL)) {
belle_sip_message("Auth info not found for this refresh operation on [%p]",refresher);
if (request) belle_sip_object_unref(request);
return -1;
}
refresher->on_io_error=0; /*reset this flag*/
/*update expires in any cases*/
expires_header = belle_sip_message_get_header_by_type(request,belle_sip_header_expires_t);
if (expires_header)
belle_sip_header_expires_set_expires(expires_header,refresher->target_expires);
contact=belle_sip_message_get_header_by_type(request,belle_sip_header_contact_t);
if (contact && belle_sip_header_contact_get_expires(contact)>=0)
belle_sip_header_contact_set_expires(contact,refresher->target_expires);
/*update the Date header if it exists*/
{
belle_sip_header_date_t *date=belle_sip_message_get_header_by_type(request,belle_sip_header_date_t);
if (date){
time_t curtime=time(NULL);
belle_sip_header_date_set_time(date,&curtime);
}
}
client_transaction = belle_sip_provider_create_client_transaction(prov,request);
client_transaction->base.is_internal=1;
belle_sip_transaction_set_application_data(BELLE_SIP_TRANSACTION(client_transaction),refresher);
if (request == refresher->first_acknoleged_request) { /*request is now ref by transaction so no need to keepo it*/
belle_sip_object_unref(refresher->first_acknoleged_request);
refresher->first_acknoleged_request = NULL;
}
switch (belle_sip_transaction_get_state(BELLE_SIP_TRANSACTION(refresher->transaction))) {
case BELLE_SIP_TRANSACTION_INIT:
case BELLE_SIP_TRANSACTION_CALLING:
case BELLE_SIP_TRANSACTION_TRYING:
/*very early state, we can assume nobody will answer, stop retransmiting*/
belle_sip_transaction_terminate(BELLE_SIP_TRANSACTION(refresher->transaction));
break;
default: /*we preserve the transaction "as is"*/
break;
}
/*update reference transaction for next refresh*/
belle_sip_object_unref(refresher->transaction);
refresher->transaction=client_transaction;
belle_sip_object_ref(refresher->transaction);
if (belle_sip_client_transaction_send_request_to(client_transaction,requri?requri:preset_route)) { /*send imediatly to requri in case of redirect*/
belle_sip_error("Cannot send refresh method [%s] for refresher [%p]"
,belle_sip_request_get_method(request)
,refresher);
return -1;
}
if (expires==0) belle_sip_refresher_stop_internal(refresher,0); /*unregister transaction must be preserved*/
return 0;
}