/**
* The main page handler, outputs a 1x1 pixel image.
*/
public function get()
{
if ($t = Request::get('t', 'encrypted')) {
// Track an encrypted link.
if (!Tracker::trackLink($t)) {
Logger::error('Failed to track encrypted link: ' . Encryption::aesDecrypt($t, Configuration::get('tracker.key')));
}
} elseif (Configuration::get('tracker.allow_unencrypted') && ($tracker = Request::get('tracker', 'int'))) {
// Track an unencrypted link.
$user = Request::get('user', 'int') ?: ClientUser::createInstance()->id;
$sub = Request::get('sub', 'int');
Tracker::trackEventID($tracker, $sub, $user);
}
// Output a single pixel image.
header('Content-Type: image/png');
echo base64_decode('iVBORw0KGgoAAAANSUhEUgAAAAEAAAABAQMAAAAl21bKAAAAA1BMVEUAAACnej3aAAAAAXRSTlMAQObYZgAAAApJREFUCNdjYAAAAAIAAeIhvDMAAAAASUVORK5CYII=');
exit;
}
/**
* Called whenever mysql returns an error executing a query.
*
* @param array $error
* The PDO error.
* @param string $sql
* The original query.
*
* @throws Exception
* When a mysql error occurs.
*/
public function errorHandler($error, $sql)
{
$errors = array();
// Add a header.
$errors[] = "MYSQL ERROR ({$error['0']}:{$error['1']}): {$error['2']}";
// Add the full query.
$errors[] = $sql;
// Show the stack trace.
$backtrace = debug_backtrace();
foreach ($backtrace as $call) {
if (empty($call['file'])) {
$errors[] = 'Called from: ' . $call['class'] . ' : ' . $call['function'];
} elseif (!preg_match('/class_database\\.php$/', $call['file'])) {
$errors[] = 'Called from: ' . $call['file'] . ' : ' . $call['line'];
}
}
// Show actual mysql error.
$errors[] = $error[2];
if ($this->verbose) {
// Add a footer.
// @todo change this so it doesn't require an input.
foreach ($errors as $e) {
Messenger::error($e);
}
throw new Exception("***** MYSQL ERROR *****");
} else {
foreach ($errors as $e) {
Logger::error($e);
}
Logger::error($sql);
}
exit;
}
