function _checkCollision()
{
jpimport('classes.core.utility.configuration');
$lastLock = JoomlapackTables::ReadVar('CUBELock');
// Expire CUBE lock after two minutes of inactivity
if (is_null($lastLock)) {
$noLock = true;
} else {
$now = time();
$noLock = $now - $lastLock > 120;
}
if (!$noLock) {
die(JoomlapackLangManager::_('FRONTEND_STATUS501'));
}
}
function unregisterAndDeleteTempFile($fileName, $removePrefix = false)
{
$configuration =& JoomlapackConfiguration::getInstance();
if ($removePrefix) {
$fileName = str_replace($configuration->get('TempDirectory'), '', $fileName);
if (substr($fileName, 1, 1) == '/' || substr($fileName, 1, 1) == '\\') {
$fileName = substr($fileName, 2, strlen($fileName) - 1);
}
}
if (JoomlapackTables::CountVar('CUBETempFiles') >= 1) {
$serialized = JoomlapackTables::ReadVar('CUBETempFiles');
$tempFiles = unserialize($serialized);
$newTempFiles = array();
if (is_array($tempFiles)) {
$aFile = array_shift($tempFiles);
while (!is_null($aFile)) {
if ($aFile != $fileName) {
$newTempFiles[] = $aFile;
}
$aFile = array_shift($tempFiles);
}
}
if (count($newTempFiles) == 0) {
JoomlapackTables::DeleteVar('CUBETempFiles');
} else {
$serialized = serialize($newTempFiles);
JoomlapackTables::WriteVar('CUBETempFiles', $serialized);
}
}
$file = $configuration->get('TempDirectory') . DS . $fileName;
return file_exists($file) ? @unlink($file) : false;
}
/**
* Reads and unserializes a packvar variable (combo function)
*
* @param string $varName The variable name to read
* @param mixed $default The default unserialized data to return if the $varName doesn't exist
* @return mixed The unserialized value read from database
*/
function UnserializeVar($varName, $default = null)
{
if (JoomlapackTables::CountVar($varName) >= 1) {
$serialized = JoomlapackTables::ReadVar($varName);
return unserialize($serialized);
} else {
return $default;
}
}