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APNotification.php
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APNotification.php
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<?php
/**
* APNotification
* Allows to send a Push Notification to
* a specific iPhone
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*
* @author Sebastian Borggrewe <me@sebastianborggrewe.de>
* @since 2010/01/14
* @package APNP
*/
class APNotification extends APNSBase{
/**
* Sets the URLs for the two different
* run enviroments development and production
*
* @var array
*/
protected static $_ENVIROMENTS = array(
'development' => 'ssl://gateway.sandbox.push.apple.com:2195',
'production' => 'ssl://gateway.push.apple.com:2195');
/**
* Unique iPhone Device Token
* identifies a specific iPhone
*
* @var string
*/
protected $_deviceToken;
/**
* message to be send to the iPhone
*
* @var string
*/
protected $_message = '';
/**
* Number, that should be displayed
* in the badge of the receiving app
* on Push Notification
* leave blank for no badge
*
* @var int
*/
protected $_badge;
/**
* Sound to be played on receival of Push Notification
* leave blank for standard sound
*
* @var string
*/
protected $_sound;
/**
* Stores the properties, that should be send to the
* remote iPhone Application
*/
protected $_properties = array();
/**
* Initializes a Push Notification with an
* enviroment.
* Valid values: development, production
*
* @param string $environment (production or development)
*/
public function __construct($environment = "development") {
parent::__construct($environment);
}
/*
* Getter and Setter
*/
/**
* Set deviceToken
*
* @param string $deviceToken
* @return void
*/
public function setDeviceToken($deviceToken)
{
$this->_deviceToken = $deviceToken;
}
/**
* Sets Push Notification message (mandatory)
*
* @param string $message
*/
public function setMessage($message)
{
# Doesn't allow empty messages
if($this->_checkMessageValue($message) === false)
throw new Exception('You need to add a message for your Push Notification.');
$this->_message = $message;
}
/**
* Sets Push Notification sound (obligative)
*
* @param string $sound
*/
public function setSound($sound)
{
$this->_sound = $sound;
}
/**
* Sets number to be displayed in the badge
* on the app icon.
*
* @param int $badge
*/
public function setBadge($badge)
{
# Only accepts integer values
if(is_int($badge) === false)
throw new Exception('The badge has to be an integer value.');
$this->_badge = $badge;
}
/**
* Adds a Property which should be send to the
* remote iPhone Application
*
* @param string $key name of the property
* @param array/string $value can be an array or string
*/
public function addProperty($key, $value)
{
# is the key empty or a space?
if(trim($key) === "" || $key === "aps")
throw new Exception("The key of your property needs a valid name, can't be a space or empty or named aps");
# is there already a property named $key
if(isset($this->_properties[$key]) === true)
throw new Exception("You already added a property with the name: ".$key);
# add property to property array
$this->_properties[$key] = $value;
}
/**
* Checks wether the value of the message
* is valid
*
* @param string $message
* @return bool
* @todo check wether there are any apple restrictions for the message
*/
protected function _checkMessageValue($message)
{
if(trim($message) !== '')
return true;
else
return false;
}
/**
* Returns the properties
* @return array $this->_properties
*/
private function __getProperties()
{
return $this->_properties;
}
/**
* Creates the Payload Body for the APNS
*
* @return string JSON Codierter Push Notification body
*/
private function __getNotificationPayload()
{
# Add message to the payload
if($this->_checkMessageValue($this->_message) === false)
throw new Exception('You need to add a message for your Push Notification.');
$notificationBody['aps'] = array('alert' => $this->_message);
# Add badge if set
if($this->_badge !== NULL && is_int($this->_badge))
$notificationBody['aps']['badge'] = $this->_badge;
# Add sound if set
if($this->_sound !== NULL && is_string($this->_sound))
$notificationBody['aps']['sound'] = $this->_sound;
# Merges the Properties and the aps dictonary
if($this->_properties !== NULL && is_array($this->_properties))
$notificationBody = array_merge($notificationBody, $this->__getProperties());
return json_encode($notificationBody);
}
/**
* Constructs the Push Notification cf. Apple specification
*
* @return byte string
*/
private function __getNotification() {
$notification =
chr(0) .
pack("n",32) . pack('H*', str_replace(' ', '', $this->_deviceToken)) .
pack("n",strlen($this->__getNotificationPayload())) . $this->__getNotificationPayload();
return $notification;
}
/**
* DEBUG Output;
*/
public function debug()
{
echo $this->__getNotificationPayload();
}
/**
* @todo Implement Method, that saves to Database
*/
public function save()
{
}
/**
* Sends the Push Notification via Socket Connection
* to APNS.
*
* @return void
*/
public function send()
{
if($this->_checkPrivateKey($this->_privateKey) === false)
throw new Exception('You need to set the path to the private key file.');
# Initialize stream context
$streamContext = stream_context_create();
# Load private key
stream_context_set_option($streamContext, 'ssl', 'local_cert', $this->_privateKey);
# Get private key passphrase if any
if($this->_privateKeyPassphrase !== '')
stream_context_set_option($streamContext, 'ssl', 'passphrase', $this->_privateKeyPassphrase);
# Connect to the Apple Push Notification Service
$fp = stream_socket_client(
APNotification::$_ENVIROMENTS[$this->_enviroment],
$errorNumber,
$errorString,
60,
STREAM_CLIENT_CONNECT,
$streamContext);
# Connection failed?
if ($errorString)
throw new Exception('Can\'t connect to Apple Push Notification Service: '.$errorString);
//echo $this->__getNotification();
# Send Push Notification
fwrite($fp, $this->__getNotification());
# Close Connection
fclose($fp);
} // End send()
} // End APNotification
?>