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610 lines
14 KiB
610 lines
14 KiB
/*
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* $Id: Conference.cpp,v 1.7 2004/06/29 09:45:54 rco Exp $
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*
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* Copyright (C) 2002-2003 Fhg Fokus
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*
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* This file is part of sems, a free SIP media server.
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*
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* sems is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* For a license to use the sems software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* sems 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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*
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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 "Conference.h"
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#include "AmUtils.h"
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#include "AmConfigReader.h"
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#include "AmConferenceStatus.h"
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#include "AmConfig.h"
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#include "AmSessionContainer.h"
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#include "AmMediaProcessor.h"
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#include "sems.h"
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#include "log.h"
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#define APP_NAME "conference"
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EXPORT_SESSION_FACTORY(ConferenceFactory,APP_NAME);
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ConferenceFactory::ConferenceFactory(const string& _app_name)
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: AmSessionFactory(_app_name)
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{
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}
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string ConferenceFactory::LonelyUserFile;
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string ConferenceFactory::JoinSound;
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string ConferenceFactory::DropSound;
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string ConferenceFactory::DialoutSuffix;
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int ConferenceFactory::onLoad()
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{
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AmConfigReader cfg;
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if(cfg.loadFile(AmConfig::ModConfigPath + string(APP_NAME)+ ".conf"))
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return -1;
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// get application specific global parameters
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configureModule(cfg);
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LonelyUserFile = cfg.getParameter("default_announce",ANNOUNCE_PATH "/" ANNOUNCE_FILE);
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if(!file_exists(LonelyUserFile)){
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ERROR("default announce '%s' \n",LonelyUserFile.c_str());
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ERROR("for module conference does not exist.\n");
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return -1;
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}
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JoinSound = cfg.getParameter("join_sound");
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DropSound = cfg.getParameter("drop_sound");
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//RingTone = cfg.getParameter("ring_tone");
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// DialoutSuffix = cfg.getParameter("dialout_suffix");
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// if(DialoutSuffix.empty()){
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// WARN("No dialout_suffix has been configured in the conference plug-in:\n");
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// WARN("\t -> dial out will not be available\n");
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// }
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return 0;
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}
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AmSession* ConferenceFactory::onInvite(const AmSipRequest& req)
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{
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return new ConferenceDialog(req.user);
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}
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AmSession* ConferenceFactory::onRefer(const AmSipRequest& req)
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{
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if(req.to_tag.empty())
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throw AmSession::Exception(488,"Not accepted here");
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AmSession* s = new ConferenceDialog(req.user);
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s->dlg.local_tag = req.from_tag;
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DBG("ConferenceFactory::onRefer: local_tag = %s\n",s->dlg.local_tag.c_str());
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return s;
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}
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ConferenceDialog::ConferenceDialog(const string& conf_id,
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AmConferenceChannel* dialout_channel)
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: conf_id(conf_id),
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channel(0),
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play_list(this),
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dialout_channel(dialout_channel),
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state(CS_normal),
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allow_dialout(false)
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{
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dialedout = this->dialout_channel.get() != 0;
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rtp_str.setAdaptivePlayout(true);
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}
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ConferenceDialog::~ConferenceDialog()
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{
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DBG("ConferenceDialog::~ConferenceDialog()\n");
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}
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void ConferenceDialog::onStart()
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{
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}
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void ConferenceDialog::onSessionStart(const AmSipRequest& req)
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{
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allow_dialout = (getHeader(req.hdrs,"P-Dialout") == "yes");
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setupAudio();
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}
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// void ConferenceDialog::onSessionStart(const AmSipReply& reply)
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// {
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// setupAudio();
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// }
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void ConferenceDialog::setupAudio()
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{
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if(!ConferenceFactory::JoinSound.empty()) {
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JoinSound.reset(new AmAudioFile());
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if(JoinSound->open(ConferenceFactory::JoinSound,
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AmAudioFile::Read))
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JoinSound.reset(0);
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}
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if(!ConferenceFactory::DropSound.empty()) {
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DropSound.reset(new AmAudioFile());
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if(DropSound->open(ConferenceFactory::DropSound,
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AmAudioFile::Read))
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DropSound.reset(0);
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}
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// if(!ConferenceFactory::RingTone.empty()) {
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// RingTone.reset(new AmAudioFile());
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// if(RingTone->open(ConferenceFactory::RingTone,
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// AmAudioFile::Read))
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// RingTone.reset(0);
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// }
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play_list.close();// !!!
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if(dialout_channel.get()){
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DBG("adding dialout_channel to the playlist (dialedout = %i)\n",dialedout);
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play_list.addToPlaylist(new AmPlaylistItem(dialout_channel.get(),
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dialout_channel.get()));
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}
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else {
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channel.reset(AmConferenceStatus::getChannel(conf_id,getLocalTag()));
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play_list.addToPlaylist(new AmPlaylistItem(channel.get(),
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channel.get()));
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}
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setInOut(&play_list,&play_list);
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setCallgroup(conf_id);
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}
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void ConferenceDialog::onBye(const AmSipRequest& req)
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{
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if(dialout_channel.get())
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disconnectDialout();
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closeChannels();
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setStopped();
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}
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void ConferenceDialog::process(AmEvent* ev)
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{
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ConferenceEvent* ce = dynamic_cast<ConferenceEvent*>(ev);
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if(ce && (conf_id == ce->conf_id)){
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switch(ce->event_id){
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case ConfNewParticipant:
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DBG("########## new participant #########\n");
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if((ce->participants == 1) &&
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!ConferenceFactory::LonelyUserFile.empty() ){
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if(!LonelyUserFile.get()){
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LonelyUserFile.reset(new AmAudioFile());
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if(LonelyUserFile->open(ConferenceFactory::LonelyUserFile,
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AmAudioFile::Read))
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LonelyUserFile.reset(0);
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}
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if(LonelyUserFile.get())
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play_list.addToPlayListFront(
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new AmPlaylistItem( LonelyUserFile.get(), NULL ));
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}
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else {
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if(JoinSound.get()){
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JoinSound->rewind();
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play_list.addToPlayListFront(
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new AmPlaylistItem( JoinSound.get(), NULL ));
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}
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}
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break;
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case ConfParticipantLeft:
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DBG("########## participant left the room #########\n");
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if(DropSound.get()){
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DropSound->rewind();
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play_list.addToPlayListFront(
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new AmPlaylistItem( DropSound.get(), NULL ));
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}
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break;
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default:
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break;
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}
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return;
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}
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DialoutConfEvent* do_ev = dynamic_cast<DialoutConfEvent*>(ev);
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if(do_ev){
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if(dialedout){
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switch(do_ev->event_id){
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case DoConfConnect:
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connectMainChannel();
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break;
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case DoConfDisconnect:
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dlg.bye();
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closeChannels();
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setStopped();
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break;
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default:
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break;
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}
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}
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else {
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switch(do_ev->event_id){
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case DoConfDisconnect:
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DBG("****** Caller received DoConfDisconnect *******\n");
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connectMainChannel();
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state = CS_normal;
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break;
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case DoConfConnect:
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state = CS_dialout_connected;
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play_list.close(); // !!!
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play_list.addToPlaylist(new AmPlaylistItem(dialout_channel.get(),
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dialout_channel.get()));
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break;
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case DoConfRinging:
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if(!RingTone.get())
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RingTone.reset(new AmRingTone(0,2000,4000,440,480)); // US
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DBG("adding ring tone to the playlist (dialedout = %i)\n",dialedout);
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play_list.close();
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play_list.addToPlaylist(new AmPlaylistItem(RingTone.get(),NULL));
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break;
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case DoConfError:
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DBG("****** Caller received DoConfError *******\n");
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if(!ErrorTone.get())
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ErrorTone.reset(new AmRingTone(2000,250,250,440,480));
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DBG("adding error tone to the playlist (dialedout = %i)\n",dialedout);
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//play_list.close();
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play_list.addToPlayListFront(new AmPlaylistItem(ErrorTone.get(),NULL));
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break;
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}
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}
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return;
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}
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AmSession::process(ev);
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}
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string dtmf2str(int event)
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{
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switch(event){
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case 0: case 1: case 2:
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case 3: case 4: case 5:
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case 6: case 7: case 8:
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case 9:
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return int2str(event);
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case 10: return "*";
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case 11: return "#";
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default: return "";
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}
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}
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void ConferenceDialog::onDtmf(int event, int duration)
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{
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DBG("ConferenceDialog::onDtmf\n");
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if(dialedout || !allow_dialout)
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return;
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switch(state){
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case CS_normal:
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DBG("CS_normal\n");
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dtmf_seq += dtmf2str(event);
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if(dtmf_seq.length() == 2){
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if(dtmf_seq == "#*")
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state = CS_dialing_out;
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dtmf_seq = "";
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}
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break;
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case CS_dialing_out:{
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DBG("CS_dialing_out\n");
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string digit = dtmf2str(event);
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if(digit == "*"){
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if(!dtmf_seq.empty()){
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createDialoutParticipant(dtmf_seq);
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state = CS_dialed_out;
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}
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else {
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DBG("state = CS_normal; ????????\n");
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state = CS_normal;
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}
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dtmf_seq = "";
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}
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else
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dtmf_seq += digit;
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} break;
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case CS_dialout_connected:
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DBG("CS_dialout_connected\n");
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if(event == 10){ // '*'
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AmSessionContainer::instance()
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->postEvent(dialout_id,
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new DialoutConfEvent(DoConfConnect,
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getLocalTag()));
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connectMainChannel();
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state = CS_normal;
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}
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case CS_dialed_out:
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DBG("CS_dialed_out\n");
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if(event == 11){ // '#'
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disconnectDialout();
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state = CS_normal;
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}
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break;
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}
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}
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void ConferenceDialog::createDialoutParticipant(const string& uri_user)
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{
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string uri = "sip:" + uri_user + "@" + dlg.domain;
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dialout_channel.reset(AmConferenceStatus::getChannel(getLocalTag(),getLocalTag()));
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dialout_id = AmSession::getNewId();
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ConferenceDialog* dialout_session =
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new ConferenceDialog(conf_id,
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AmConferenceStatus::getChannel(getLocalTag(),
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dialout_id));
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AmSipDialog& dialout_dlg = dialout_session->dlg;
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dialout_dlg.local_tag = dialout_id;
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dialout_dlg.callid = AmSession::getNewId() + "@" + AmConfig::LocalIP;
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dialout_dlg.local_party = dlg.local_party;
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dialout_dlg.remote_party = uri;
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dialout_dlg.remote_uri = uri;
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string body;
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int local_port = dialout_session->rtp_str.getLocalPort();
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dialout_session->sdp.genRequest(AmConfig::LocalIP,local_port,body);
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dialout_dlg.sendRequest("INVITE","application/sdp",body,"");
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dialout_session->start();
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AmSessionContainer* sess_cont = AmSessionContainer::instance();
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sess_cont->addSession(dialout_id,dialout_session);
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}
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void ConferenceDialog::disconnectDialout()
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{
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if(dialedout){
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if(dialout_channel.get()){
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AmSessionContainer::instance()
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->postEvent(dialout_channel->getConfID(),
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new DialoutConfEvent(DoConfDisconnect,
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dialout_channel->getConfID()));
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}
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}
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else {
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AmSessionContainer::instance()
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->postEvent(dialout_id,
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new DialoutConfEvent(DoConfDisconnect,
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getLocalTag()));
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connectMainChannel();
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}
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}
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void ConferenceDialog::connectMainChannel()
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{
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dialout_id = "";
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dialedout = false;
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dialout_channel.reset(NULL);
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play_list.close();
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if(!channel.get())
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channel.reset(AmConferenceStatus
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::getChannel(conf_id,
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getLocalTag()));
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play_list.addToPlaylist(new AmPlaylistItem(channel.get(),
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channel.get()));
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}
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void ConferenceDialog::closeChannels()
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{
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play_list.close();
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setInOut(NULL,NULL);
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channel.reset(NULL);
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dialout_channel.reset(NULL);
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}
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void ConferenceDialog::onSipRequest(const AmSipRequest& req)
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{
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AmSession::onSipRequest(req);
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if((dlg.getStatus() >= AmSipDialog::Connected) ||
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(req.method != "REFER"))
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return;
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std::swap(dlg.local_party,dlg.remote_party);
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dlg.remote_tag = "";
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dlg.setRoute(getHeader(req.hdrs,"P-Transfer-RR"));
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dlg.next_hop = getHeader(req.hdrs,"P-Transfer-NH");
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DBG("ConferenceDialog::onSipRequest: local_party = %s\n",dlg.local_party.c_str());
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DBG("ConferenceDialog::onSipRequest: local_tag = %s\n",dlg.local_tag.c_str());
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DBG("ConferenceDialog::onSipRequest: remote_party = %s\n",dlg.remote_party.c_str());
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DBG("ConferenceDialog::onSipRequest: remote_tag = %s\n",dlg.remote_tag.c_str());
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string body;
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int local_port = rtp_str.getLocalPort();
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sdp.genRequest(AmConfig::LocalIP,local_port,body);
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dlg.sendRequest("INVITE","application/sdp",body,"");
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transfer_req.reset(new AmSipRequest(req));
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return;
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}
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void ConferenceDialog::onSipReply(const AmSipReply& reply)
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{
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int status = dlg.getStatus();
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AmSession::onSipReply(reply);
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DBG("ConferenceDialog::onSipReply: code = %i, reason = %s\n, status = %i",
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reply.code,reply.reason.c_str(),dlg.getStatus());
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if(!dialedout &&
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!transfer_req.get())
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return;
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if(status < AmSipDialog::Connected){
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switch(dlg.getStatus()){
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case AmSipDialog::Connected:
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// connected!
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try {
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acceptAudio(reply.body,reply.hdrs);
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if(getDetached() && !getStopped()){
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setupAudio();
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if(getInput() || getOutput())
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AmMediaProcessor::instance()->addSession(this,
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getCallgroup());
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else {
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ERROR("missing audio input and/or ouput.\n");
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return;
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}
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if(!transfer_req.get()){
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// send connect event
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AmSessionContainer::instance()
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->postEvent(dialout_channel->getConfID(),
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new DialoutConfEvent(DoConfConnect,
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dialout_channel->getConfID()));
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}
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else {
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dlg.reply(*(transfer_req.get()),202,"Accepted");
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transfer_req.reset(0);
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connectMainChannel();
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}
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}
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}
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catch(const AmSession::Exception& e){
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ERROR("%i %s\n",e.code,e.reason.c_str());
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dlg.bye();
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setStopped();
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}
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break;
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case AmSipDialog::Pending:
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switch(reply.code){
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case 180:
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// send ringing event
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AmSessionContainer::instance()
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->postEvent(dialout_channel->getConfID(),
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new DialoutConfEvent(DoConfRinging,
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dialout_channel->getConfID()));
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break;
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case 183: break;//TODO: remote ring tone.
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default: break;// continue waiting.
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}
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break;
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case AmSipDialog::Disconnected:
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|
|
if(!transfer_req.get()){
|
|
|
|
disconnectDialout();
|
|
//switch(reply.code){
|
|
//default:
|
|
|
|
AmSessionContainer::instance()
|
|
->postEvent(dialout_channel->getConfID(),
|
|
new DialoutConfEvent(DoConfError,
|
|
dialout_channel->getConfID()));
|
|
//}
|
|
}
|
|
else {
|
|
|
|
dlg.reply(*(transfer_req.get()),reply.code,reply.reason);
|
|
transfer_req.reset(0);
|
|
setStopped();
|
|
}
|
|
break;
|
|
|
|
|
|
|
|
default: break;
|
|
}
|
|
|
|
|
|
}
|
|
}
|
|
|