225 lines
5.3 KiB
C++
225 lines
5.3 KiB
C++
/**
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* dbpbx.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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* PBX, IVR and multi routing from a database.
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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 <yatepbx.h>
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using namespace TelEngine;
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namespace { // anonymous
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static Configuration s_cfg(Engine::configFile("dbpbx"));
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class DbObject
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{
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public:
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DbObject(const char* name);
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virtual ~DbObject() { }
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void initQuery();
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virtual bool loadQuery();
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protected:
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String m_name;
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String m_account;
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};
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class DbMultiRouter : public MultiRouter, public DbObject
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{
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public:
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inline DbMultiRouter()
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: DbObject("router")
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{ }
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virtual bool loadQuery();
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virtual Message* buildExecute(CallInfo& info, bool reroute);
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virtual bool msgRoute(Message& msg, CallInfo& info, bool first);
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protected:
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String m_queryRoute;
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String m_queryRetry;
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String m_retryNeeds;
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};
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class DbPbxPlugin : public Plugin
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{
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public:
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DbPbxPlugin();
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~DbPbxPlugin();
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protected:
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virtual void initialize();
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private:
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bool m_init;
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DbMultiRouter* m_router;
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};
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// handle ${paramname} replacements
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static void replaceParams(String& str, const NamedList &lst)
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{
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int p1;
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while ((p1 = str.find("${")) >= 0) {
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int p2 = str.find('}',p1+2);
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if (p2 > 0) {
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String v = str.substr(p1+2,p2-p1-2);
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v.trimBlanks();
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DDebug(DebugAll,"Replacing parameter '%s'",v.c_str());
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String tmp = String::sqlEscape(lst.getValue(v));
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str = str.substr(0,p1) + tmp + str.substr(p2+1);
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}
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}
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}
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// copy parameters from SQL result to a NamedList
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static void copyParams(NamedList& lst, Array* a)
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{
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if (!a)
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return;
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for (int i = 0; i < a->getColumns(); i++) {
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String* s = YOBJECT(String,a->get(i,0));
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if (!(s && *s))
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continue;
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String name = *s;
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for (int j = 1; j < a->getRows(); j++) {
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s = YOBJECT(String,a->get(i,j));
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if (s)
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lst.setParam(name,*s);
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}
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}
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}
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DbObject::DbObject(const char* name)
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: m_name(name)
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{
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m_account = s_cfg.getValue(m_name,"account",s_cfg.getValue("default","account"));
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}
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bool DbObject::loadQuery()
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{
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return true;
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}
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void DbObject::initQuery()
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{
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if (m_account.null())
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return;
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String query = s_cfg.getValue(m_name,"initquery");
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if (query.null())
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return;
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// no error check at all - we enqueue the query and we're out
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Message* m = new Message("database");
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m->addParam("account",m_account);
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m->addParam("query",query);
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m->addParam("results","false");
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Engine::enqueue(m);
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}
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bool DbMultiRouter::loadQuery()
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{
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m_queryRoute = s_cfg.getValue(m_name,"queryroute");
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m_queryRetry = s_cfg.getValue(m_name,"queryretry");
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m_retryNeeds = s_cfg.getValue(m_name,"retryneeds");
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return m_queryRoute || m_queryRetry;
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}
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bool DbMultiRouter::msgRoute(Message& msg, CallInfo& info, bool first)
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{
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if (m_queryRoute.null() || m_account.null())
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return false;
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String query(m_queryRoute);
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replaceParams(query,msg);
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Message m("database");
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m.addParam("account",m_account);
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m.addParam("query",query);
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if (Engine::dispatch(m) && m.getIntValue("rows") >=1) {
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Array* a = static_cast<Array*>(m.userObject("Array"));
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if (a) {
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copyParams(info,a);
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copyParams(msg,a);
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msg.retValue() = info.getValue("callto");
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return true;
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}
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}
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return false;
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}
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Message* DbMultiRouter::buildExecute(CallInfo& info, bool reroute)
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{
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if (m_queryRetry.null() || m_account.null())
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return 0;
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if (m_retryNeeds && !info.getParam(m_retryNeeds))
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return 0;
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String query(m_queryRetry);
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replaceParams(query,info);
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Message m("database");
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m.addParam("account",m_account);
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m.addParam("query",query);
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if (Engine::dispatch(m) && m.getIntValue("rows") >=1) {
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Array* a = static_cast<Array*>(m.userObject("Array"));
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if (a) {
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Message* m = defaultExecute(info);
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copyParams(info,a);
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copyParams(*m,a);
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return m;
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}
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}
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return 0;
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}
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DbPbxPlugin::DbPbxPlugin()
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: Plugin("dbpbx"), m_init(false), m_router(0)
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{
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Output("Loaded module PBX for database");
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}
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DbPbxPlugin::~DbPbxPlugin()
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{
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Output("Unloading module PBX for database");
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if (m_router)
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m_router->destruct();
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}
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void DbPbxPlugin::initialize()
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{
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if (m_init)
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return;
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m_init = true;
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Output("Initializing module PBX for database");
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s_cfg.load();
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if (!m_router && s_cfg.getBoolValue("general","router")) {
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m_router = new DbMultiRouter;
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if (m_router->loadQuery()) {
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m_router->initQuery();
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m_router->setup(s_cfg.getIntValue("priorities","router"));
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}
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else {
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m_router->destruct();
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m_router = 0;
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}
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}
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}
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INIT_PLUGIN(DbPbxPlugin);
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}; // anonymous namespace
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/* vi: set ts=8 sw=4 sts=4 noet: */
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