mirror of
https://github.com/ACSPRI/queXS
synced 2024-04-02 12:12:16 +00:00
639 lines
16 KiB
PHP
639 lines
16 KiB
PHP
<?php
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/**
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* Functions to interact with Asterisk
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* Some examples taken from {@link http://www.voip-info.org/wiki/index.php?page=Asterisk+manager+Example%3A+PHP voip-info.org}
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*
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*
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* This file is part of queXS
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*
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* queXS 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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* queXS 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 queXS; 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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*
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* @author Adam Zammit <adam.zammit@deakin.edu.au>
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* @copyright Deakin University 2007,2008
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* @package queXS
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* @subpackage functions
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* @link http://www.deakin.edu.au/dcarf/ queXS was writen for DCARF - Deakin Computer Assisted Research Facility
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* @license http://opensource.org/licenses/gpl-2.0.php The GNU General Public License (GPL) Version 2
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*
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*/
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/**
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* Configuration file
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*/
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include_once(dirname(__FILE__).'/../config.inc.php');
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/**
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* Class to interact with Asterisk
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*
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* @package queXS
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*/
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class voip {
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/**
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* Socket connection to Asterisk server
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*/
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var $socket;
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/**
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* Close the socket gracefully on destruct
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*/
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function __destruct() {
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//close the socket
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if ($this->socket !== false)
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{
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fclose($this->socket);
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$this->socket = false;
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}
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}
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/**
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* Return a list of IAX extensions
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* as an associative array
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*
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* @return array Key is extension, value is status
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*
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*/
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function getIAXStatus()
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{
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$ret = $this->query("Action: IAXPeerList\r\n\r\n","PeerlistComplete");
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$c = preg_split("/\r\n\r\n/i",$ret);
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$chans = array();
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foreach ($c as $s)
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{
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if(preg_match("{Event: PeerEntry.*ObjectName: ([0-9a-zA-Z-]+).*Status: ([/0-9a-zA-Z-]+)}is",$s,$regs))
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{
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//print T_("Channel: SIP/") . $regs[1] . " BridgedChannel " . $regs[2] . "\n";
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$chan = substr($regs[1],0,4);
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$chans[$chan] = $regs[2];
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}
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}
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return $chans;
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}
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/**
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* Return a list of active extensions and their corresponding
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* channels as an associative array
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*
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* @return array Key is extension, value is Asterisk channel
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*
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*/
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function getChannels()
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{
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$ret = $this->query("Action: Status\r\n\r\n","StatusComplete");
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$c = preg_split("/\r\n\r\n/i",$ret);
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$chans = array();
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foreach ($c as $s)
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{
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if(preg_match("{Event: Status.*Channel: ((SIP/|IAX2/)[0-9a-zA-Z-]+).*BridgedChannel: ((SIP/|IAX2/)[/0-9a-zA-Z-]+)}is",$s,$regs))
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{
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//print T_("Channel: SIP/") . $regs[1] . " BridgedChannel " . $regs[2] . "\n";
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$ccs = explode('-',$regs[1]);
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$chan = $ccs[0];
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$chans[$chan] = array($regs[1],$regs[3]);
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}
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else if(preg_match("{Event: Status.*Channel: ((SIP/|IAX2/)[0-9a-zA-Z-]+)}is",$s,$regs))
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{
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//print T_("Channel: ") . $regs[1] . "\n";
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$ccs = explode('-', $regs[1]);
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$chan = $ccs[0];
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$chans[$chan] = array($regs[1],false);
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}
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}
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return $chans;
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}
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/**
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* Return the channel (if active) given the extension
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* Return false if no channel found
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*
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* @param string $ext Extension as in Asterisk
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* @return string|bool The Asterisk channel or false if no channel exists
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*
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*/
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function getChannel($ext,$link = false)
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{
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$v = $this->getChannels();
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if (isset($v[$ext]))
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{
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if ($link)
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return $v[$ext][1];
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else
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return $v[$ext][0];
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}
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else
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return false;
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}
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/**
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* Add another party to an active call (eg add in the supervisor)
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*
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* @param int $ext The extension of the current call
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* @param int $number The phone number to add to the call
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* @todo CHECK IF THE MEETING ROOM IS EMPTY before adding use meetme list
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*
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*/
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function addParty($ext,$number)
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{
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if($ext)
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{
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$channel = $this->getChannel($ext);
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$link = $this->getChannel($ext,true);
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//check if the meeting room is empty
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//if so:
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// 1. call the supervisor to the room
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$q = "Action: Originate\r\nChannel: Local/$number@from-internal\r\nPriority: 1\r\nContext: default\r\nApplication: MeetMe\r\nData: " . MEET_ME_ROOM . ",d\r\n\r\n";
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$r = $this->query($q,"Meetme");
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// 2. transfer the current call to the room
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$r = $this->query("Action: Redirect\r\nChannel: $channel\r\nExten: " . MEET_ME_ROOM . "\r\nPriority: 1\r\n\r\n","Response");
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$r = $this->query("Action: Redirect\r\nChannel: $link\r\nExten: " . MEET_ME_ROOM . "\r\nContext: from-internal-xfer\r\nPriority: 1\r\n\r\n","Response");
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}
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}
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/**
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* Dial call from the call database
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*
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* @param string $ext The extension to originate the call from
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* @param string $number The number to dial
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*
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*/
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function dial($ext,$number)
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{
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$r = $this->query("Action: Originate\r\nChannel: $ext\r\nExten: $number\r\nContext: " . ORIGINATE_CONTEXT . "\r\nPriority: 1\r\nCallerid: $ext\r\n\r\n","Response");
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}
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/**
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* Hang up the current call by the extension
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*
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* @param int $ext The extension to hang up for
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*
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*/
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function hangup($ext)
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{
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if($ext)
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{
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$channel = $this->getChannel($ext);
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$r = $this->query("Action: Hangup\r\nChannel: $channel\r\n\r\n","Response");
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}
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}
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/**
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* Begin recording the call to a file
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*
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* @param string $ext The Asterisk extension
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* @param bool|string $filename False for an auto generated file name else specify file name
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* @todo Handle multiple recordings
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*
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*/
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function beginRecord($ext,$filename = false)
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{
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if($ext)
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{
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$channel = $this->getChannel($ext);
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$r = $this->query("Action: Monitor\r\nChannel: $channel\r\nFile: $filename\r\nFormat: gsm\r\nMix: 1\r\n\r\n","Response");
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}
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}
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/**
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* End the recording on this extension
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*
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* @param string $ext The Asterisk extension
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* @todo Handle multiple recordings
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* @see beginRecord()
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*
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*/
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function endRecord($ext)
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{
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if($ext)
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{
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$channel = $this->getChannel($ext);
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$r = $this->query("Action: StopMonitor\r\nChannel: $channel\r\n\r\n","Response");
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}
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}
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/**
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* Return the status of an extension
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*
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* @param int $ext The extension
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* @return bool|int false if not available, 1 for available, 2 for available and on a call
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*
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*/
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function getExtensionStatus($ext)
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{
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if($ext)
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{
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$type = "SIP";
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$exts = explode('/', $ext, 2);
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if (isset($exts[0]))
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$type = $exts[0];
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if (isset($exts[1]))
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$ext = $exts[1];
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if ($type == "SIP")
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{
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$ret = $this->query("Action: ExtensionState\r\nContext: from-internal\r\nExten: $ext\r\nActionID: \r\n\r\n","Status:");
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if(preg_match("{Status: ([0-9]+)}is",$ret,$regs))
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{
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if (isset($regs[1]))
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{
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// 0 appears to be online, 1 online and on a call
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if ($regs[1] == 0)
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return 1;
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else if ($regs[1] == 1 || $regs[1] == 8)
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return 2;
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}
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}
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}
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else if ($type == "IAX2")
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{
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$exts = $this->getIAXStatus();
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if (isset($exts[$ext]))
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{
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$status = $exts[$ext];
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if ($status == "OK")
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return 1;
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}
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}
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}
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return false;
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}
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/**
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* Return whether we are connected to the Asterisk server or not
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*
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* @return True if connected else false
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*
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*/
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function isConnected()
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{
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if ($this->socket)
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return true;
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else
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return false;
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}
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/**
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* Connect to the Asterisk server
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*
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* @param string $ip The IP Address
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* @param string $user Username for Asterisk manager
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* @param string $pass Password for Asterisk manager
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* @param bool $events If events should be enabled or not (default false)
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*
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* @return bool True if connected successfully, else false
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*/
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function connect($ip=VOIP_SERVER,$user=VOIP_ADMIN_USER,$pass=VOIP_ADMIN_PASS,$events = false)
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{
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$this->socket = fsockopen($ip,VOIP_PORT,$errno,$errstr,1);
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if (!$this->socket)
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{
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//print "$errno: $errstr";
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//exit();
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return false;
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}
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// stream_set_timeout($this->socket, 1);
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$q = "Action: Login\r\nUsername: $user\r\nSecret: $pass\r\nEvents: ";
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if ($events)
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$q .= "on";
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else
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$q .= "off";
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$q .= "\r\n\r\n";
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$r = $this->query($q,"accepted");
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if (strpos($r,"Response: Success"))
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{
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return true;
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}
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else
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{
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fclose($this->socket);
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return false;
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}
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}
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/**
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* Query the Asterisk server and wait for a response or timeout
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*
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* @param string $query The string to send to the Asterisk manager, see {@link http://www.voip-info.org/wiki/view/Asterisk+manager+API API} for details
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* @param string $waitfor A string within the return string to wait for before returning
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* @return string The response string from Asterisk
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*
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*/
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function query($query,$waitfor=false)
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{
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$wrets = "";
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if ($this->socket === false)
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return false;
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fputs($this->socket, $query);
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$c = 1;
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do
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{
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$line = fgets($this->socket, 4096);
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$wrets .= $line;
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$info = stream_get_meta_data($this->socket);
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} while ($line != "\n" && !$info['timed_out'] && (strpos($line,$waitfor) === false));
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return $wrets;
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}
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}
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/**
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* Class used to watch Asterisk events and effect changes to queXS database
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*
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* @package queXS
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* @todo automatically code a call if we know it is busy
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*/
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class voipWatch extends voip {
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var $keepWatching = true;
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function dbReconnect()
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{
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global $db;
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if (!$db->IsConnected())
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{
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//keep reconnecting to the db so it doesn't time out
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$db = newADOConnection(DB_TYPE);
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$db->Connect(DB_HOST, DB_USER, DB_PASS, DB_NAME);
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$db->SetFetchMode(ADODB_FETCH_ASSOC);
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}
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}
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/**
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* Get the call_id based on the extension
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*
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* @param int $ext the extension
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* @return int The call_id
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*/
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function getCallId($ext)
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{
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global $db;
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$sql = "SELECT l.call_id, c.case_id
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FROM `extension` AS e
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JOIN (`case` AS c, `call_attempt` AS ca, `call` AS l) ON
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( c.current_operator_id = e.current_operator_id
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AND c.case_id = ca.case_id
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AND ca.operator_id = e.current_operator_id
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AND ca.end IS NULL
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AND l.call_attempt_id = ca.call_attempt_id
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AND l.outcome_id =0 )
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WHERE e.extension = '$ext'";
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$rs = $db->GetRow($sql);
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$call_id =0;
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$case_id =0;
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if (!empty($rs))
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{
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$call_id =$rs['call_id'];
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$case_id =$rs['case_id'];
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}
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return array($call_id,$case_id);
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}
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function setExtensionStatus($ext, $online = true, $msg = false)
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{
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global $db;
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$s = $online ? 1 : 0;
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if ($msg) print(T_("Extension") . " $ext " . ($online ? T_("online") : T_("offline")) . "\n");
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$sql = "UPDATE `extension`
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SET status = '$s'
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WHERE extension = '$ext'";
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$db->Execute($sql);
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}
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function setState($call_id,$state,$checkOutcome = false)
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{
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global $db;
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$sql = "UPDATE `call`
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SET state = '$state'
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WHERE call_id = '$call_id'";
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if ($checkOutcome) $sql .= " AND outcome_id = 0";
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$db->Execute($sql);
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}
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/**
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* Update the extension status for all extensions
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*/
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function updateAllExtensionStatus()
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{
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global $db;
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$sql = "SELECT e.extension
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FROM `extension` as e";
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$rs = $db->GetAll($sql);
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foreach($rs as $r)
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{
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$e = $r['extension'];
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$s = $this->getExtensionStatus($e);
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if ($s == false)
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$this->setExtensionStatus($e,false,true);
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else
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$this->setExtensionStatus($e,true,true);
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}
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}
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/**
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* Watch for Asterisk events and make changes to the queXS databse if
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* appropriate
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*
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*
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*/
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function watch($process_id = false)
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{
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/**
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* Process file
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*/
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if ($process_id) include_once(dirname(__FILE__).'/../functions/functions.process.php');
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$line = "";
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if ($this->socket === false)
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return false;
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//Set initial extension status
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$this->updateAllExtensionStatus();
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$in = true;
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$time = time();
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//Watch for events
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do
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{
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if (!$this->isConnected() || $this->socket === false || $in === FALSE){
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fclose($this->socket);
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print(T_("Disconnected") . "\n");
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$this->connect(VOIP_SERVER,VOIP_ADMIN_USER,VOIP_ADMIN_PASS,true);
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if ($this->isConnected()) print (T_("Reconnected") . "\n");
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}
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$in = fgets($this->socket, 4096);
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//print "IN: $in\n";
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/**
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* When we have reached the end of a message, process it
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*
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*/
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if ($in == "\r\n")
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{
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//print "PROCESS: ";
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/**
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* The call is ringing
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*/
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if (preg_match("{Event: DialBegin.*Channel: ((SIP/|IAX2/)[0-9]+)}is",$line,$regs))
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{
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list($call_id,$case_id) = $this->getCallId($regs[1]);
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if ($call_id != 0)
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{
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print T_("Ringing") . T_(" Extension ") . $regs[1] . " " . T_("Case id") . ": <a href=\"supervisor.php?case_id=$case_id\">$case_id</a>\n";
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$this->setState($call_id,2);
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}
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}
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/**
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* The call has been answered
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*/
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else if (preg_match("{Event: Bridge.*Channel1: ((SIP/|IAX2/)[0-9]+)}is",$line,$regs))
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{
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list($call_id,$case_id) = $this->getCallId($regs[1]);
|
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if ($call_id != 0)
|
|
{
|
|
print T_("Answered") . T_(" Extension ") . $regs[1] . " " . T_("Case id") . ": <a href=\"supervisor.php?case_id=$case_id\">$case_id</a>\n";
|
|
$this->setState($call_id,3);
|
|
}
|
|
}
|
|
/**
|
|
* The call has been hung up
|
|
*/
|
|
else if (preg_match("{Event: Hangup.*Channel: ((SIP/|IAX2/)[0-9]+).*Cause: ([0-9]+)}is",$line,$regs))
|
|
{
|
|
list($call_id,$case_id) = $this->getCallId($regs[1]);
|
|
// print_r($regs);
|
|
if ($call_id != 0)
|
|
{
|
|
if ($regs[3] == 16) { //Cause 16 - was ringing so this is an auto no-answer hangup
|
|
print T_("No Answer - Auto Hangup") . T_(" Extension ") . $regs[1] . " " . T_("Case id") . ": <a href=\"supervisor.php?case_id=$case_id\">$case_id</a>\n";
|
|
$this->setState($call_id,6,true);
|
|
} else if ($regs[3] == 19) { //Cause 19 - Disconnected
|
|
print T_("Disconnected - Auto Hangup") . T_(" Extension ") . $regs[1] . " " . T_("Case id") . ": <a href=\"supervisor.php?case_id=$case_id\">$case_id</a>\n";
|
|
$this->setState($call_id,7,true);
|
|
} else {
|
|
print T_("Hangup") . T_(" Extension ") . $regs[1] . " " . T_("Case id") . ": <a href=\"supervisor.php?case_id=$case_id\">$case_id</a>\n";
|
|
$this->setState($call_id,4,true);
|
|
}
|
|
}
|
|
}
|
|
|
|
/**
|
|
* The status of an extension has changed to unregistered
|
|
*/
|
|
else if (preg_match("{Event: PeerStatus.*Peer: ((SIP/|IAX2/)[0-9]+).*PeerStatus: Unregistered}is",$line,$regs))
|
|
{
|
|
print T_("Unregistered") . T_(" Extension ") . $regs[1] . "\n";
|
|
$this->setExtensionStatus($regs[1],false);
|
|
}
|
|
|
|
/**
|
|
* The status of an extension has changed to registered
|
|
*/
|
|
else if (preg_match("{Event: PeerStatus.*Peer: ((SIP/|IAX2/)[0-9]+).*PeerStatus: Registered}is",$line,$regs))
|
|
{
|
|
print T_("Registered") . T_(" Extension ") . $regs[1] . "\n";
|
|
$this->setExtensionStatus($regs[1],true);
|
|
}
|
|
|
|
//print $line . "\n\n";
|
|
$line = "";
|
|
}
|
|
else if ($in !== FALSE)
|
|
{
|
|
/**
|
|
* Append the lines to the message if we are not yet at the end of one
|
|
*/
|
|
$line .= $in;
|
|
}
|
|
|
|
|
|
|
|
@flush();
|
|
|
|
if ($process_id && ((time() - $time) > 10))
|
|
{
|
|
$this->dbReconnect();
|
|
$this->keepWatching = !is_process_killed($process_id);
|
|
$time = time();
|
|
}
|
|
|
|
} while ($this->keepWatching);
|
|
|
|
}
|
|
}
|
|
|
|
|
|
|
|
?>
|