101 lines
2.5 KiB
PHP
101 lines
2.5 KiB
PHP
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<?php defined('SYSPATH') or die('No direct access allowed.');
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/**
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* This class is handling Ademco Contact ID Events
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*
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* @package HAM
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* @category Helpers
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* @author Deon George
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* @copyright (c) 2010 Deon George
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* @license http://dev.leenooks.net/license.html
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*/
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class ContactID {
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// Raw event ID
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private $id = '';
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private $acct;
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private $sub;
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private $qualifier;
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private $type;
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private $area;
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private $alarm;
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private $checksum;
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private $datetime;
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public function event($id,$dt,$cf='',$cn='') {
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// @todo This shouldnt stop program execution, rather it should generate an email to an admin
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if (! $this->check($id))
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throw new Kohana_Exception('ContactID event :event is not valid',array(':event'=>$id));
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// Process event trigger
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$this->id = $id;
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$this->acct = substr($id,0,4);
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$this->sub = substr($id,4,2);
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$this->qualifier = substr($id,6,1);
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$this->type = substr($id,7,3);
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$this->area = substr($id,10,2);
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$this->info = substr($id,12,3);
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$this->checksum = substr($id,15,1);
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$this->datetime = $dt;
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// Check the event is from a valid account
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// @todo This shouldnt stop program execution, rather it should generate an email to an admin
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$ao = ORM::factory('account',array('alarmphone'=>$cf,'siteid'=>$this->acct));
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if (! $ao->loaded())
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throw new Kohana_Exception('Event from unknown account :id is not valid',array(':id'=>$ao->id));
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$eo = ORM::factory('event');
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$eo->account_id = $ao->id;
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$eo->alarmevent = $id;
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$eo->datetime = $dt;
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$eo->save();
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// @todo This shouldnt stop program execution, rather it should generate an email to an admin
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if (! $eo->saved())
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throw new Kohana_Exception('ContactID event :event is not valid',array(':event'=>$id));
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return $this;
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}
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public function __get($k) {
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if (isset($this->{$k}))
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return $this->{$k};
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else
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throw new Kohana_Exception('Unknown property :property',array(':property'=>$k));;
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}
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// Check that this event is valid
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private function check($id) {
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$checksum_map = array(
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'0'=>10,
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'1'=>1,
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'2'=>2,
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'3'=>3,
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'4'=>4,
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'5'=>5,
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'6'=>6,
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'7'=>7,
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'8'=>8,
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'9'=>9,
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'*'=>11,
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'#'=>12,
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'A'=>13,
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'B'=>14,
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'C'=>15,
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);
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if (strlen($id) != 16)
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throw new Kohana_Exception('ContactID event :event has an invalid length :length',array(':event'=>$id,':length'=>strlen($id)));
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// Our checksum should be mod15
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$c = $t = 0;
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while ($c<strlen($id))
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$t += $checksum_map[substr($id,$c++,1)];
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if ($t%15 === 0)
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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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?>
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