EnerGenie-EG-PM2-LAN-V1/class.EnerGenieSwitcher.php

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<?php
class EnerGenieSwitcher {
const ON = 1;
const OFF = 0;
private $debug = false;
/**
* Check prerequisites and set-up
*/
public function __construct($ip, $password, $debug=false) {
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if(!extension_loaded('curl')) { die('Fatal error: CURL extension needed.'); }
$this->ip = $ip;
$this->password = $password;
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$this->debug = $debug;
}
public function doLogin() {
$this->postRequest('http://'.$this->ip.'/login.html', array('pw' => $this->password));
}
public function doLogout() {
$this->postRequest('http://'.$this->ip.'/login.html', array('pw' => ''));
}
/**
* Get status
*/
public function getStatus() {
$this->doLogin();
$html = $this->getRequest('http://'.$this->ip.'/energenie.html', array());
$this->doLogout();
preg_match_all('/var sockstates \= \[([0-1],[0,1],[0,1],[0,1])\]/', $html, $matches);
if(!isset($matches[1][0])) { return false; }
$states = explode(',', $matches[1][0]);
return array(1=>$states[0], 2=>$states[1], 3=>$states[2], 4=>$states[3]);
}
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/**
* Do the switch
*/
public function doSwitch($switches) {
$this->doLogin();
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foreach($switches as $port => $state) {
$ports = array(1 => '', 2 => '', 3 => '', 4 => '');
$ports[$port] = $state;
$params = array();
foreach($ports as $port => $state) {
if(in_array($state, array(self::ON, self::OFF))) {
$params['cte'.$port] = $state;
}
}
$this->postRequest('http://'.$this->ip, $params);
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}
$this->doLogout();
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}
function postRequest($url, $fields) {
$fields_string_array = array();
foreach($fields as $key=>$value) { $fields_string_array[] = $key.'='.$value; }
$fields_string = join('&', $fields_string_array);
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//open connection
$ch = curl_init();
// configure
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT_MS, 5000);
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL, $url);
curl_setopt($ch,CURLOPT_POST, count($fields));
curl_setopt($ch,CURLOPT_POSTFIELDS, $fields_string);
//execute post
$result = curl_exec($ch);
if($this->debug === true) {
echo "Calling " . $url . '?' . $fields_string . "\n";
}
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//close connection
curl_close($ch);
// provide html
return $result;
}
function getRequest($url, $fields) {
$fields_string_array = array();
foreach($fields as $key=>$value) { $fields_string_array[] = $key.'='.$value; }
$fields_string = join('&', $fields_string_array);
//open connection
$ch = curl_init();
// configure
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT_MS, 5000);
//set the url, number of POST vars, POST data
curl_setopt($ch,CURLOPT_URL, $url . ($fields_string != '' ? '?' . $fields_string : ''));
//execute post
$result = curl_exec($ch);
if($this->debug === true) {
echo "Calling " . $url . '?' . $fields_string . "\n";
}
//close connection
curl_close($ch);
// provide html
return $result;
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}
}