Google Android Cloud to Device Messaging

gc2dm.php

<?php

/*
Role of the Third-Party Application Server
https://developers.google.com/android/c2dm/#server
*/

function gc2dmAuth($username, $password = null, $source = 'First-PushApp-1.0', $service = 'ac2dm'){
	
	if($password === null || !$password){
		print "GC2DM ERROR: no password set\n";
		return null;
	}
	
	$ch = curl_init();
	if(!$ch){
		print "GC2DM ERROR: can not init curl\n";
		return null;
	}
	
	curl_setopt($ch, CURLOPT_URL, 'https://www.google.com/accounts/ClientLogin');
	
	$post_fields = 
		'accountType='.urlencode('HOSTED_OR_GOOGLE').
		'&Email='.urlencode($username).
		'&Passwd='.urlencode($password).
		'&source='.urlencode($source).
		'&service='.urlencode($service)
	;
	
	curl_setopt($ch, CURLOPT_HEADER, true);
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $post_fields);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
	curl_setopt($ch, CURLOPT_HTTPAUTH, CURLAUTH_ANY);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	
	$response = curl_exec($ch);
	
	curl_close($ch);
	
	if(strpos($response, '200 OK') === false){
		print "GC2DM ERROR: Google response failed\n";
		return null;
	}
	
	preg_match('/(Auth=)([\w|-]+)/', $response, $matches);
	if(!isset($matches[2])){
		print "GC2DM ERROR: No auth found in Google response\n";
		return null;
	}
	
	return $matches[2];
}

function gc2dmMsgSend($authCode, $deviceRegistrationId, $msgId, $messageText, $dataCustomPayload = null){
	$headers = array('Authorization: GoogleLogin auth='.$authCode, 'application/x-www-form-urlencoded', 'charset=UTF-8');
	
	$data = array(
		'registration_id' => urlencode($deviceRegistrationId),
		'collapse_key' => urlencode($msgId),
		'data.payload' => urlencode($messageText),
	);
	
	if($dataCustomPayload){
		foreach($dataCustomPayload as $key => $val){
			$data['data.'.$key] = $val;
		}
	}
	
	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, 'https://android.apis.google.com/c2dm/send');
	if($headers){
		curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
	}
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_POST, true);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
	//curl_setopt($ch, CURLINFO_HEADER_OUT, true);
	$response = curl_exec($ch);
	curl_close($ch);
	
	return $response;
}