forked from mirrors/linphone-iphone
269f8d1c4e
Fix bug when receiving a 487 after cancelling call, resulting in a call waiting tone to be played.
273 lines
11 KiB
C
273 lines
11 KiB
C
/*
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linphone
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Copyright (C) 2012 Belledonne Communications, Grenoble, France
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include "sal_impl.h"
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SalSubscribeStatus get_subscription_state(belle_sip_message_t *msg){
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belle_sip_header_subscription_state_t* subscription_state_header=belle_sip_message_get_header_by_type(msg,belle_sip_header_subscription_state_t);
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SalSubscribeStatus sss=SalSubscribeNone;
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if (subscription_state_header){
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if (strcmp(belle_sip_header_subscription_state_get_state(subscription_state_header),BELLE_SIP_SUBSCRIPTION_STATE_TERMINATED)==0)
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sss=SalSubscribeTerminated;
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else if (strcmp(belle_sip_header_subscription_state_get_state(subscription_state_header),BELLE_SIP_SUBSCRIPTION_STATE_PENDING)==0)
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sss=SalSubscribePending;
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else if (strcmp(belle_sip_header_subscription_state_get_state(subscription_state_header),BELLE_SIP_SUBSCRIPTION_STATE_ACTIVE)==0)
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sss=SalSubscribeActive;
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}
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return sss;
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}
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static void subscribe_refresher_listener (belle_sip_refresher_t* refresher
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,void* user_pointer
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,unsigned int status_code
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,const char* reason_phrase) {
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SalOp* op = (SalOp*)user_pointer;
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belle_sip_transaction_t *tr=BELLE_SIP_TRANSACTION(belle_sip_refresher_get_transaction(refresher));
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/*belle_sip_response_t* response=belle_sip_transaction_get_response(tr);*/
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SalSubscribeStatus sss=SalSubscribeTerminated;
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ms_message("Subscribe refresher [%i] reason [%s] ",status_code,reason_phrase?reason_phrase:"none");
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if (status_code>=200 && status_code<300){
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if (status_code==200) sss=SalSubscribeActive;
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else if (status_code==202) sss=SalSubscribePending;
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set_or_update_dialog(op,belle_sip_transaction_get_dialog(tr));
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}
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if (status_code>=200){
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sal_error_info_set(&op->error_info,SalReasonUnknown,status_code,reason_phrase,NULL);
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op->base.root->callbacks.subscribe_response(op,sss);
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}else if (status_code==0){
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op->base.root->callbacks.on_expire(op);
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}
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}
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static void subscribe_process_io_error(void *user_ctx, const belle_sip_io_error_event_t *event){
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ms_error("subscribe_process_io_error not implemented yet");
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}
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static void subscribe_process_dialog_terminated(void *ctx, const belle_sip_dialog_terminated_event_t *event) {
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SalOp* op= (SalOp*)ctx;
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if (op->dialog) {
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op->dialog=NULL;
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sal_op_unref(op);
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}
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}
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static void subscribe_response_event(void *op_base, const belle_sip_response_event_t *event){
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}
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static void subscribe_process_timeout(void *user_ctx, const belle_sip_timeout_event_t *event) {
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}
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static void subscribe_process_transaction_terminated(void *user_ctx, const belle_sip_transaction_terminated_event_t *event) {
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}
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static void handle_notify(SalOp *op, belle_sip_request_t *req, const char *eventname, SalBody * body){
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SalSubscribeStatus sub_state;
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belle_sip_header_subscription_state_t* subscription_state_header=belle_sip_message_get_header_by_type(req,belle_sip_header_subscription_state_t);
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belle_sip_response_t* resp;
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belle_sip_server_transaction_t* server_transaction = op->pending_server_trans;
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if (!subscription_state_header || strcasecmp(BELLE_SIP_SUBSCRIPTION_STATE_TERMINATED,belle_sip_header_subscription_state_get_state(subscription_state_header)) ==0) {
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sub_state=SalSubscribeTerminated;
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ms_message("Outgoing subscription terminated by remote [%s]",sal_op_get_to(op));
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} else
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sub_state=SalSubscribeActive;
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sal_op_ref(op);
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op->base.root->callbacks.notify(op,sub_state,eventname,body);
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resp=sal_op_create_response_from_request(op,req,200);
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belle_sip_server_transaction_send_response(server_transaction,resp);
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sal_op_unref(op);
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}
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static void subscribe_process_request_event(void *op_base, const belle_sip_request_event_t *event) {
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SalOp* op = (SalOp*)op_base;
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belle_sip_server_transaction_t* server_transaction = belle_sip_provider_create_server_transaction(op->base.root->prov,belle_sip_request_event_get_request(event));
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belle_sip_request_t* req = belle_sip_request_event_get_request(event);
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belle_sip_dialog_state_t dialog_state;
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belle_sip_header_expires_t* expires = belle_sip_message_get_header_by_type(req,belle_sip_header_expires_t);
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belle_sip_header_t *event_header;
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SalBody body;
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belle_sip_response_t* resp;
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const char *eventname=NULL;
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const char *method=belle_sip_request_get_method(req);
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belle_sip_object_ref(server_transaction);
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if (op->pending_server_trans) belle_sip_object_unref(op->pending_server_trans);
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op->pending_server_trans=server_transaction;
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event_header=belle_sip_message_get_header((belle_sip_message_t*)req,"Event");
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sal_op_get_body(op,(belle_sip_message_t*)req,&body);
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if (event_header==NULL){
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ms_warning("No event header in incoming SUBSCRIBE.");
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resp=sal_op_create_response_from_request(op,req,400);
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belle_sip_server_transaction_send_response(server_transaction,resp);
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return;
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}
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if (op->event==NULL) {
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op->event=event_header;
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belle_sip_object_ref(op->event);
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}
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eventname=belle_sip_header_get_unparsed_value(event_header);
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if (!op->dialog) {
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if (strcmp(method,"SUBSCRIBE")==0){
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op->dialog=belle_sip_provider_create_dialog(op->base.root->prov,BELLE_SIP_TRANSACTION(server_transaction));
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belle_sip_dialog_set_application_data(op->dialog,op);
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sal_op_ref(op);
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ms_message("new incoming subscription from [%s] to [%s]",sal_op_get_from(op),sal_op_get_to(op));
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}else{ /*this is a NOTIFY*/
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handle_notify(op,req,eventname,&body);
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return;
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}
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}
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dialog_state=belle_sip_dialog_get_state(op->dialog);
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switch(dialog_state) {
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case BELLE_SIP_DIALOG_NULL: {
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op->base.root->callbacks.subscribe_received(op,eventname,body.type ? &body : NULL);
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break;
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}
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case BELLE_SIP_DIALOG_EARLY:
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ms_error("unexpected method [%s] for dialog [%p] in state BELLE_SIP_DIALOG_EARLY ",belle_sip_request_get_method(req),op->dialog);
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break;
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case BELLE_SIP_DIALOG_CONFIRMED:
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if (strcmp("NOTIFY",method)==0) {
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handle_notify(op,req,eventname,&body);
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} else if (strcmp("SUBSCRIBE",method)==0) {
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/*either a refresh of an unsubscribe*/
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if (expires && belle_sip_header_expires_get_expires(expires)>0) {
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resp=sal_op_create_response_from_request(op,req,200);
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belle_sip_server_transaction_send_response(server_transaction,resp);
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} else if(expires) {
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ms_message("Unsubscribe received from [%s]",sal_op_get_from(op));
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resp=sal_op_create_response_from_request(op,req,200);
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belle_sip_server_transaction_send_response(server_transaction,resp);
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op->base.root->callbacks.subscribe_closed(op);
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}
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}
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break;
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default: {
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ms_error("unexpected dialog state [%s]",belle_sip_dialog_state_to_string(dialog_state));
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}
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}
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}
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static belle_sip_listener_callbacks_t op_subscribe_callbacks={ 0 };
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void sal_op_subscribe_fill_cbs(SalOp*op) {
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if (op_subscribe_callbacks.process_io_error==NULL){
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op_subscribe_callbacks.process_io_error=subscribe_process_io_error;
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op_subscribe_callbacks.process_response_event=subscribe_response_event;
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op_subscribe_callbacks.process_timeout=subscribe_process_timeout;
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op_subscribe_callbacks.process_transaction_terminated=subscribe_process_transaction_terminated;
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op_subscribe_callbacks.process_request_event=subscribe_process_request_event;
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op_subscribe_callbacks.process_dialog_terminated=subscribe_process_dialog_terminated;
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}
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op->callbacks=&op_subscribe_callbacks;
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op->type=SalOpSubscribe;
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}
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int sal_subscribe(SalOp *op, const char *from, const char *to, const char *eventname, int expires, const SalBody *body){
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belle_sip_request_t *req=NULL;
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if (from)
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sal_op_set_from(op,from);
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if (to)
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sal_op_set_to(op,to);
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if (!op->dialog){
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sal_op_subscribe_fill_cbs(op);
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/*???sal_exosip_fix_route(op); make sure to ha ;lr*/
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req=sal_op_build_request(op,"SUBSCRIBE");
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if (eventname){
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if (op->event) belle_sip_object_unref(op->event);
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op->event=belle_sip_header_create("Event",eventname);
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belle_sip_object_ref(op->event);
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}
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belle_sip_message_add_header(BELLE_SIP_MESSAGE(req),op->event);
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belle_sip_message_add_header(BELLE_SIP_MESSAGE(req),BELLE_SIP_HEADER(belle_sip_header_expires_create(expires)));
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sal_op_add_body(op,(belle_sip_message_t*)req,body);
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return sal_op_send_and_create_refresher(op,req,expires,subscribe_refresher_listener);
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}else if (op->refresher){
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const belle_sip_transaction_t *tr=(const belle_sip_transaction_t*) belle_sip_refresher_get_transaction(op->refresher);
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belle_sip_request_t *last_req=belle_sip_transaction_get_request(tr);
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/* modify last request to update body*/
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sal_op_add_body(op,(belle_sip_message_t*)last_req,body);
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return belle_sip_refresher_refresh(op->refresher,expires);
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}
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ms_warning("sal_subscribe(): no dialog and no refresher ?");
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return -1;
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}
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int sal_unsubscribe(SalOp *op){
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if (op->refresher){
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const belle_sip_transaction_t *tr=(const belle_sip_transaction_t*) belle_sip_refresher_get_transaction(op->refresher);
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belle_sip_request_t *last_req=belle_sip_transaction_get_request(tr);
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sal_op_add_body(op,(belle_sip_message_t*)last_req,NULL);
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belle_sip_refresher_refresh(op->refresher,0);
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return 0;
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}
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return -1;
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}
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int sal_subscribe_accept(SalOp *op){
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belle_sip_request_t* req=belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(op->pending_server_trans));
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belle_sip_header_expires_t* expires = belle_sip_message_get_header_by_type(req,belle_sip_header_expires_t);
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belle_sip_response_t* resp = sal_op_create_response_from_request(op,req,200);
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belle_sip_message_add_header(BELLE_SIP_MESSAGE(resp),BELLE_SIP_HEADER(expires));
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belle_sip_server_transaction_send_response(op->pending_server_trans,resp);
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return 0;
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}
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int sal_subscribe_decline(SalOp *op, SalReason reason){
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belle_sip_response_t* resp = belle_sip_response_create_from_request(belle_sip_transaction_get_request(BELLE_SIP_TRANSACTION(op->pending_server_trans)),
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sal_reason_to_sip_code(reason));
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belle_sip_server_transaction_send_response(op->pending_server_trans,resp);
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return 0;
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}
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int sal_notify(SalOp *op, const SalBody *body){
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belle_sip_request_t* notify;
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if (!op->dialog) return -1;
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if (!(notify=belle_sip_dialog_create_queued_request(op->dialog,"NOTIFY"))) return -1;
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if (op->event) belle_sip_message_add_header(BELLE_SIP_MESSAGE(notify),op->event);
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belle_sip_message_add_header(BELLE_SIP_MESSAGE(notify)
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,BELLE_SIP_HEADER(belle_sip_header_subscription_state_create(BELLE_SIP_SUBSCRIPTION_STATE_ACTIVE,600)));
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sal_op_add_body(op,(belle_sip_message_t*)notify, body);
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return sal_op_send_request(op,notify);
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}
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int sal_notify_close(SalOp *op){
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belle_sip_request_t* notify;
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if (!op->dialog) return -1;
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if (!(notify=belle_sip_dialog_create_queued_request(op->dialog,"NOTIFY"))) return -1;
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if (op->event) belle_sip_message_add_header(BELLE_SIP_MESSAGE(notify),op->event);
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belle_sip_message_add_header(BELLE_SIP_MESSAGE(notify)
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,BELLE_SIP_HEADER(belle_sip_header_subscription_state_create(BELLE_SIP_SUBSCRIPTION_STATE_TERMINATED,-1)));
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return sal_op_send_request(op,notify);
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}
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