140 lines
3.4 KiB
C++
140 lines
3.4 KiB
C++
/*
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* msgsniff.cpp
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* This file is part of the YATE Project http://YATE.null.ro
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*
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* A sample message sniffer that inserts a wildcard message handler
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*
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* Yet Another Telephony Engine - a fully featured software PBX and IVR
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* Copyright (C) 2004-2006 Null Team
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*
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* This program 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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* 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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*
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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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA.
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*/
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#include <yatengine.h>
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using namespace TelEngine;
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namespace { // anonymous
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class MsgSniff : public Plugin
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{
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public:
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MsgSniff();
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virtual void initialize();
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private:
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bool m_first;
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};
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class SniffHandler : public MessageHandler
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{
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public:
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SniffHandler() : MessageHandler(0,0) { }
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virtual bool received(Message &msg);
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};
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class HookHandler : public MessagePostHook
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{
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public:
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virtual void dispatched(const Message& msg, bool handled);
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};
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static bool s_active = true;
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static void dumpParams(const Message &msg, String& par)
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{
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unsigned n = msg.length();
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for (unsigned i = 0; i < n; i++) {
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const NamedString *s = msg.getParam(i);
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if (s) {
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par << "\n param['" << s->name() << "'] = ";
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if (s->name() == "password")
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par << "(hidden)";
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else
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par << "'" << *s << "'";
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}
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}
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}
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bool SniffHandler::received(Message &msg)
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{
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if (msg == "engine.timer")
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return false;
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if (msg == "engine.command") {
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String line(msg.getValue("line"));
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if (line.startSkip("sniffer")) {
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line >> s_active;
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msg.retValue() << "Message sniffer is " << (s_active ? "on" : "off") << "\n";
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return true;
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}
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}
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if (!s_active)
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return false;
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String par;
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dumpParams(msg,par);
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Output("Sniffed '%s' time=%u.%06u\n thread=%p '%s'\n data=%p\n retval='%s'%s",
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msg.c_str(),
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(unsigned int)(msg.msgTime().usec() / 1000000),
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(unsigned int)(msg.msgTime().usec() % 1000000),
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Thread::current(),
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Thread::currentName(),
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msg.userData(),
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msg.retValue().c_str(),
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par.safe());
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return false;
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};
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void HookHandler::dispatched(const Message& msg, bool handled)
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{
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if ((!s_active) || (msg == "engine.timer"))
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return;
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u_int64_t dt = Time::now() - msg.msgTime().usec();
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String par;
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dumpParams(msg,par);
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Output("Returned %s '%s' delay=%u.%06u\n thread=%p '%s'\n data=%p\n retval='%s'%s",
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String::boolText(handled),
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msg.c_str(),
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(unsigned int)(dt / 1000000),
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(unsigned int)(dt % 1000000),
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Thread::current(),
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Thread::currentName(),
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msg.userData(),
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msg.retValue().c_str(),
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par.safe());
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}
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MsgSniff::MsgSniff()
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: m_first(true)
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{
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Output("Loaded module MsgSniffer");
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}
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void MsgSniff::initialize()
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{
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Output("Initializing module MsgSniffer");
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if (m_first) {
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m_first = false;
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s_active = Engine::config().getBoolValue("general","msgsniff",false);
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Engine::install(new SniffHandler);
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Engine::self()->setHook(new HookHandler);
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}
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}
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INIT_PLUGIN(MsgSniff);
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}; // anonymous namespace
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/* vi: set ts=8 sw=4 sts=4 noet: */
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