request_action)
{
$this->request_action = $this->_get_request_action();
}
return $this->request_action;
}
private function _get_request_action()
{
switch (@$_POST['action'])
{
case static::ACTION_INCOMING:
return new KalSMS_Action_Incoming($this);
case static::ACTION_OUTGOING:
return new KalSMS_Action_Outgoing($this);
case static::ACTION_SEND_STATUS:
return new KalSMS_Action_SendStatus($this);
default:
return new KalSMS_Action($this);
}
}
function get_request_phone_number()
{
return @$_POST['phone_number'];
}
function is_validated_request($correct_password)
{
$signature = @$_SERVER['HTTP_X_KALSMS_SIGNATURE'];
if (!$signature)
{
return false;
}
$is_secure = (!empty($_SERVER['HTTPS']) AND filter_var($_SERVER['HTTPS'], FILTER_VALIDATE_BOOLEAN));
$protocol = $is_secure ? 'https' : 'http';
$full_url = $protocol . "://" . $_SERVER['HTTP_HOST'] . $_SERVER['REQUEST_URI'];
$correct_signature = $this->compute_signature($full_url, $_POST, $correct_password);
//error_log("Correct signature: '$correct_signature'");
return $signature === $correct_signature;
}
function compute_signature($url, $data, $password)
{
ksort($data);
$input = $url;
foreach($data as $key => $value)
$input .= ",$key=$value";
$input .= ",$password";
//error_log("Signed data: '$input'");
return base64_encode(sha1($input, true));
}
}
class KalSMS_OutgoingMessage
{
public $id = '';
public $to;
public $message;
}
class KalSMS_Action
{
public $type;
public $kalsms;
function __construct($kalsms)
{
$this->kalsms = $kalsms;
}
}
class KalSMS_Action_Test extends KalSMS_Action
{
function __construct($kalsms)
{
parent::__construct($kalsms);
$this->type = KalSMS::ACTION_TEST;
}
}
class KalSMS_Action_Incoming extends KalSMS_Action
{
public $from;
public $message;
function __construct($kalsms)
{
parent::__construct($kalsms);
$this->type = KalSMS::ACTION_INCOMING;
$this->from = $_POST['from'];
$this->message = $_POST['message'];
}
function get_response_xml($messages)
{
ob_start();
echo "\n";
echo "";
foreach ($messages as $message)
{
echo "".KalSMS::escape($message->message)."";
}
echo "";
return ob_get_clean();
}
}
class KalSMS_Action_Outgoing extends KalSMS_Action
{
function __construct($kalsms)
{
parent::__construct($kalsms);
$this->type = KalSMS::ACTION_OUTGOING;
}
function get_response_xml($messages)
{
ob_start();
echo "\n";
echo "";
foreach ($messages as $message)
{
echo "".
KalSMS::escape($message->message)."";
}
echo "";
return ob_get_clean();
}
}
class KalSMS_Action_SendStatus extends KalSMS_Action
{
public $status;
public $id;
function __construct($type)
{
$this->type = KalSMS::ACTION_SEND_STATUS;
$this->status = $_POST['status'];
$this->id = $_POST['id'];
}
}