mirror of https://github.com/sipwise/sems.git
git-svn-id: http://svn.berlios.de/svnroot/repos/sems/trunk@1151 8eb893ce-cfd4-0310-b710-fb5ebe64c474sayer/1.4-spce2.6
Stefan Sayer
18 years ago
parent
a1161686f9
commit
45ba561c5c
@ -0,0 +1,7 @@
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plug_in_name = b2b_connect
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module_ldflags =
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module_cflags = -DMOD_NAME=\"$(plug_in_name)\"
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COREPATH ?= ../../../core
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include $(COREPATH)/plug-in/Makefile.app_module
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@ -0,0 +1,28 @@
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b2b_connect application
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This application is a full back2back user agent (i.e. both signaling and
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media is handled by SEMS and each user agent, caller and callee, only
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see the SEMs IP address).
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Thus, the outgoing call is connected in B2BUA mode with media relay ('b2abua'),
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so technically the two legs are independent sip dialogs and media sessions.
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The outgoing calls (B leg) are optionally SIP authenticated, so for example,
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normal gateways can be used. The uac_auth module must be loaded for this
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to work. If the uac_auth module is not loaded, the outgoing calls are not
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authenticated.
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P-App-Param in the INVITE sent to SEMS contains information required
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to do the second call from SEMS to callee, together with the request URI.
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The request URI username part should contain the user to call, while the
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P-App-Param should contain the domain SEMS should add to the username,
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as well as credentials (if the outgoing call must be authenticated).
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Example for SER:
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R-URI: john@semsip:5070
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append_hf("P-App-Param: u=semsuser;d=ser.mydomain.com:5060;p=password\r\n");
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This will result in sems trying to set up a call to john@ser.mydomain.com:5060.
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If a 407 Authentication required is received, semsuser and 'password' will be
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used as credentials.
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Improvements are of course welcome as svn diff to the semsdev mailing list.
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@ -0,0 +1,315 @@
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/*
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* $Id$
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*
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* Copyright (C) 2008 Greger Viken Teigre
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* Based on auth_b2b, Copyright (C) 2008 Iptego Gmbh
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* Based on the concept of mycc, Copyright (C) 2007 Sipwise GmbH
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* Based on the concept of sw_prepaid_sip, 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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* 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 "b2b_connect.h"
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#include "log.h"
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#include "AmUtils.h"
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#include "AmAudio.h"
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#include "AmPlugIn.h"
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#include "AmMediaProcessor.h"
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//#include "AmConfigReader.h"
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#include "AmSessionContainer.h"
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EXPORT_SESSION_FACTORY(b2b_connectFactory,MOD_NAME);
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b2b_connectFactory::b2b_connectFactory(const string& _app_name)
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: AmSessionFactory(_app_name)
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// , user_timer_fact(NULL)
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{
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}
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int b2b_connectFactory::onLoad()
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{
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// AmConfigReader cfg;
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// if(cfg.loadFile(AmConfig::ModConfigPath + string(MOD_NAME ".conf")))
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// return -1;
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// user_timer_fact = AmPlugIn::instance()->getFactory4Di("user_timer");
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// if(!user_timer_fact) {
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// ERROR("could not load user_timer from session_timer plug-in\n");
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// return -1;
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// }
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return 0;
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}
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AmSession* b2b_connectFactory::onInvite(const AmSipRequest& req)
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{
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// AmDynInvoke* user_timer = user_timer_fact->getInstance();
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// if(!user_timer) {
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// ERROR("could not get a user timer reference\n");
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// throw AmSession::Exception(500,"could not get a user timer reference");
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// }
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return new b2b_connectDialog(); //user_timer);
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}
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b2b_connectDialog::b2b_connectDialog() // AmDynInvoke* user_timer)
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: m_state(BB_Init),
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//m_user_timer(user_timer),
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AmB2ABCallerSession()
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{
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rtp_str.setPlayoutType(JB_PLAYOUT);
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}
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b2b_connectDialog::~b2b_connectDialog()
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{
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}
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void b2b_connectDialog::onInvite(const AmSipRequest& req)
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{
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// TODO: do reinvites get here? if so, don't set a timer then
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// -> yes, they do.
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// TODO: errors thrown as exception don't seem to trigger a reply?
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// -> only in SessionFactory::onInvite they do. todo: move the logic to
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// session factory
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//setReceiving(false);
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//AmMediaProcessor::instance()->removeSession(this);
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string app_param = getHeader(req.hdrs, PARAM_HDR);
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if (!app_param.length()) {
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AmSession::Exception(500, "b2b_connect: parameters not found");
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}
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domain = get_header_keyvalue(app_param,"d");
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user = get_header_keyvalue(app_param,"u");
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password = get_header_keyvalue(app_param,"p");
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from = "sip:"+user+"@"+domain;
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to = "sip:"+req.user+"@"+domain;
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// DBG("-----------------------------------------------------------------\n");
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// DBG("domain = %s, user = %s, pwd = %s, from = %s, to = %s;",
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// domain.c_str(), user.c_str(), password.c_str(), from.c_str(), to.c_str());
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// DBG("-----------------------------------------------------------------\n");
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m_state = BB_Dialing;
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if(dlg.reply(req, 100, "Connecting") != 0) {
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throw AmSession::Exception(500,"Failed to reply 100");
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}
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invite_req = req;
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size_t pos1, pos2, hdr_start;
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if (findHeader(invite_req.hdrs,PARAM_HDR, pos1, pos2,
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hdr_start)) {
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while (invite_req.hdrs[pos2]=='\r' ||invite_req.hdrs[pos2]=='\n')
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pos2++;
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hdr_start -= 11; //"P-App-Param"
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invite_req.hdrs.erase(hdr_start, pos2-hdr_start);
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}
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if (findHeader(invite_req.hdrs,"P-App-Name", pos1, pos2,
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hdr_start)) {
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while (invite_req.hdrs[pos2]=='\r' ||invite_req.hdrs[pos2]=='\n')
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pos2++;
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hdr_start -= 10; //"P-App-Name"
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invite_req.hdrs.erase(hdr_start, pos2-hdr_start);
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}
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dlg.updateStatus(req);
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recvd_req.insert(std::make_pair(req.cseq,req));
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connectCallee("<" + to + ">", to, from, from);
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}
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void b2b_connectDialog::onSessionStart(const AmSipRequest& req)
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{
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AmB2ABCallerSession::onSessionStart(req);
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}
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void b2b_connectDialog::onB2ABEvent(B2ABEvent* ev)
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{
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if (ev->event_id == B2ABConnectAudio) {
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// delayed processing of first INVITE request
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AmSession::onInvite(invite_req);
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}
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AmB2ABCallerSession::onB2ABEvent(ev);
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}
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void b2b_connectDialog::process(AmEvent* ev)
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{
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// AmPluginEvent* plugin_event = dynamic_cast<AmPluginEvent*>(ev);
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// if(plugin_event && plugin_event->name == "timer_timeout") {
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// int timer_id = plugin_event->data.get(0).asInt();
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// if (timer_id == TIMERID_CREDIT_TIMEOUT) {
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// DBG("timer timeout, no more credit\n");
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// stopAccounting();
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// terminateOtherLeg();
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// terminateLeg();
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// ev->processed = true;
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// return;
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// }
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// }
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AmAudioEvent* audio_event = dynamic_cast<AmAudioEvent*>(ev);
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if(audio_event && (audio_event->event_id == AmAudioEvent::cleared)){
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DBG("ignoring end of prompt.\n");
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return;
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}
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AmB2ABCallerSession::process(ev);
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}
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void b2b_connectDialog::onDtmf(int event, int duration)
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{
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DBG("DTMF event %d duration %d\n", event, duration);
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return;
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}
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void b2b_connectDialog::onBye(const AmSipRequest& req)
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{
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if (m_state == BB_Connected) {
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// stopAccounting();
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}
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terminateOtherLeg();
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setStopped();
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}
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void b2b_connectDialog::onCancel()
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{
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if(dlg.getStatus() == AmSipDialog::Pending) {
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DBG("Wait for leg B to terminate");
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}
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else {
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DBG("Canceling leg A on CANCEL since dialog is not pending");
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dlg.reply(invite_req, 487, "Request terminated");
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setStopped();
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}
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}
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AmB2ABCalleeSession* b2b_connectDialog::createCalleeSession()
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{
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b2b_connectCalleeSession* sess = new b2b_connectCalleeSession(getLocalTag(), user, password);
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AmSessionEventHandlerFactory* uac_auth_f =
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AmPlugIn::instance()->getFactory4Seh("uac_auth");
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if (NULL != uac_auth_f) {
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DBG("UAC Auth enabled for new b2b_connect session.\n");
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AmSessionEventHandler* h = uac_auth_f->getHandler(sess);
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if (h != NULL )
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sess->addHandler(h);
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else {
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ERROR("unable to set SIP UAC auth for new session.");
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}
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} else {
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ERROR("unable to get SIP UAC auth."
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"(uac_auth module loaded?)\n");
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}
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AmSipDialog& callee_dlg = sess->dlg;
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other_id = AmSession::getNewId();
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callee_dlg.local_tag = other_id;
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callee_dlg.callid = AmSession::getNewId() + "@" + AmConfig::LocalIP;
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// this will be overwritten by ConnectLeg event
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callee_dlg.remote_party = dlg.local_party;
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callee_dlg.remote_uri = dlg.local_uri;
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// if given as parameters, use these
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callee_dlg.local_party = from;
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callee_dlg.local_uri = from;
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DBG("Created B2BUA callee leg, From: %s\n",
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from.c_str());
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sess->start();
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AmSessionContainer* sess_cont = AmSessionContainer::instance();
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sess_cont->addSession(other_id,sess);
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return sess;
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}
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b2b_connectCalleeSession::b2b_connectCalleeSession(const string& other_tag,
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const string& user, const string& pwd)
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: auth(NULL),
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credentials("", user, pwd), // domain (realm) is unused in credentials
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AmB2ABCalleeSession(other_tag) {
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rtp_str.setPlayoutType(JB_PLAYOUT);
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setDtmfDetectionEnabled(false);
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}
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b2b_connectCalleeSession::~b2b_connectCalleeSession() {
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if (auth)
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delete auth;
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}
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inline UACAuthCred* b2b_connectCalleeSession::getCredentials() {
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return &credentials;
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}
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void b2b_connectCalleeSession::onSipReply(const AmSipReply& reply) {
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AmB2ABCalleeSession::onSipReply(reply);
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}
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void b2b_connectCalleeSession::onSendRequest(const string& method, const string& content_type,
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const string& body, string& hdrs, int flags, unsigned int cseq)
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{
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AmB2ABCalleeSession::onSendRequest(method, content_type,
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body, hdrs, flags, cseq);
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}
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void b2b_connectCalleeSession::onB2ABEvent(B2ABEvent* ev)
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{
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if (ev->event_id == B2ABConnectAudio) {
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// delayed processing of first INVITE request
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AmSession::onInvite(invite_req);
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}
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AmB2ABCalleeSession::onB2ABEvent(ev);
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}
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void b2b_connectCalleeSession::process(AmEvent* ev)
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{
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AmAudioEvent* audio_event = dynamic_cast<AmAudioEvent*>(ev);
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if(audio_event && (audio_event->event_id == AmAudioEvent::noAudio)){
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DBG("connecting audio\n");
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connectSession();
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return;
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}
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AmB2ABCalleeSession::process(ev);
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}
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@ -0,0 +1,111 @@
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/*
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* $Id$
|
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*
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||||
* Copyright (C) 2008 iptego GmbH
|
||||
* Based on the concept of sw_prepaid_sip, Copyright (C) 2007 Sipwise GmbH
|
||||
* Based on the concept of mycc, Copyright (C) 2002-2003 Fhg Fokus
|
||||
*
|
||||
* This file is part of sems, a free SIP media server.
|
||||
*
|
||||
* sems is free software; you can redistribute it and/or modify
|
||||
* it under the terms of the GNU General Public License as published by
|
||||
* the Free Software Foundation; either version 2 of the License, or
|
||||
* (at your option) any later version.
|
||||
*
|
||||
* For a license to use the sems software under conditions
|
||||
* other than those described here, or to purchase support for this
|
||||
* software, please contact iptel.org by e-mail at the following addresses:
|
||||
* info@iptel.org
|
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*
|
||||
* sems is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
||||
* GNU General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU General Public License
|
||||
* along with this program; if not, write to the Free Software
|
||||
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
||||
*/
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#ifndef _B2B_CONNECT_H
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#define _B2B_CONNECT_H
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#include "AmB2ABSession.h"
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#include "ampi/UACAuthAPI.h"
|
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using std::string;
|
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class b2b_connectFactory: public AmSessionFactory
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{
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/* AmDynInvokeFactory* user_timer_fact; */
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public:
|
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b2b_connectFactory(const string& _app_name);
|
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|
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int onLoad();
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AmSession* onInvite(const AmSipRequest& req);
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};
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class b2b_connectDialog : public AmB2ABCallerSession
|
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{
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enum {
|
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BB_Init = 0,
|
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BB_Dialing,
|
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BB_Connected,
|
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BB_Teardown
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} CallerState;
|
||||
|
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int m_state;
|
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|
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string domain;
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string user;
|
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string password;
|
||||
string from;
|
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string to;
|
||||
AmSipRequest invite_req;
|
||||
|
||||
/* AmDynInvoke* m_user_timer; */
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||||
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||||
public:
|
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|
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b2b_connectDialog(); //AmDynInvoke* user_timer);
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~b2b_connectDialog();
|
||||
|
||||
void onSessionStart(const AmSipRequest& req);
|
||||
void onB2ABEvent(B2ABEvent* ev);
|
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void process(AmEvent* ev);
|
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void onDtmf(int event, int duration);
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void onBye(const AmSipRequest& req);
|
||||
void onInvite(const AmSipRequest& req);
|
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void onCancel();
|
||||
|
||||
|
||||
protected:
|
||||
|
||||
AmB2ABCalleeSession* createCalleeSession();
|
||||
};
|
||||
|
||||
class b2b_connectCalleeSession
|
||||
: public AmB2ABCalleeSession, public CredentialHolder
|
||||
{
|
||||
UACAuthCred credentials;
|
||||
AmSessionEventHandler* auth;
|
||||
AmSipRequest invite_req;
|
||||
|
||||
protected:
|
||||
|
||||
void onSipReply(const AmSipReply& reply);
|
||||
void onSendRequest(const string& method, const string& content_type,
|
||||
const string& body, string& hdrs, int flags, unsigned int cseq);
|
||||
|
||||
public:
|
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b2b_connectCalleeSession(const string& other_tag, const string& user, const string& pwd);
|
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~b2b_connectCalleeSession();
|
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void onB2ABEvent(B2ABEvent* ev);
|
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void process(AmEvent* ev);
|
||||
|
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inline UACAuthCred* getCredentials();
|
||||
|
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void setAuthHandler(AmSessionEventHandler* h) { auth = h; }
|
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};
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||||
#endif
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Reference in new issue