/**
* Prüft ob Update verfügbar sind
* @return string|null
*/
public function checkForUpdates()
{
$data = array('version' => $this->getSysVersion(), 'language' => $this->getSysLanguage(), 'phpvers' => PHP_VERSION, 'isauto' => (int) \base_config::canConnect());
$url = \base_config::$updateServer . 'noauto.php?data=' . base64_encode(json_encode($data));
if (!\base_config::canConnect()) {
return $url;
}
if (file_exists(\base_config::$updateCache)) {
$updateCache = json_decode(file_get_contents(\base_config::$updateCache), true);
if ($updateCache['expire'] >= time()) {
if (!empty($updateCache['message'])) {
\messages::registerNotice($updateCache['message'], true);
}
return;
}
}
try {
$url = \base_config::$updateServer . 'newver.php?data=' . base64_encode(json_encode($data));
$updateData = fopen($url, 'r');
$updateData = fgets($updateData);
$updateData = json_decode(base64_decode($updateData), true);
$updateMessage = '';
if (version_compare($updateData['newversion'], $this->getSysVersion(), '>')) {
if (isset($updateData['forceupdate']) && $updateData['forceupdate']) {
header("Location: ?module=system/update&file=" . $updateData['updatefile']);
}
$updateMessage = \language::replaceLanguageConstant(\language::returnLanguageConstant('UPDATE_NEWVERSION'), array('{{versionlink}}' => '?module=system/update&file=' . $updateData['updatefile']));
\messages::registerNotice($updateMessage, true);
}
$cacheTmp = array('expire' => time() + 43200, 'message' => $updateMessage);
file_put_contents(\base_config::$updateCache, json_encode($cacheTmp));
} catch (\Exception $ex) {
\messages::registerError($ex->getMessage(), true);
}
return null;
}
private function checkRequirements()
{
if (!class_exists('PDO')) {
\messages::registerError('PHP PDO extension not found! Unable to proceed. Contact your host!', true);
die;
}
foreach ($this->checkFolders as $checkFolder) {
if (!is_writable(\base_config::$baseDir . '/' . $checkFolder)) {
\messages::registerError("Unable to write in folder <b>/{$checkFolder}</b>!", true);
}
}
if (!\base_config::canConnect()) {
\messages::registerNotice('PHP setting <b>allow_url_fopen</b> is diabled. This is not required, but recommended.', true);
}
}
