/**
* Gets the package_update.xml from an update server.
*
* @param \wcf\data\package\update\server\PackageUpdateServer $updateServer
* @param boolean $forceHTTP
*/
protected function getPackageUpdateXML(PackageUpdateServer $updateServer, $forceHTTP = false)
{
$settings = array();
$authData = $updateServer->getAuthData();
if ($authData) {
$settings['auth'] = $authData;
}
$secureConnection = $updateServer->attemptSecureConnection();
if ($secureConnection && !$forceHTTP) {
$settings['timeout'] = 5;
}
$request = new HTTPRequest($updateServer->getListURL($forceHTTP), $settings);
if ($updateServer->apiVersion == '2.1') {
$metaData = $updateServer->getMetaData();
if (isset($metaData['list']['etag'])) {
$request->addHeader('if-none-match', $metaData['list']['etag']);
}
if (isset($metaData['list']['lastModified'])) {
$request->addHeader('if-modified-since', $metaData['list']['lastModified']);
}
}
try {
$request->execute();
$reply = $request->getReply();
} catch (HTTPUnauthorizedException $e) {
throw new PackageUpdateUnauthorizedException($request, $updateServer);
} catch (SystemException $e) {
$reply = $request->getReply();
$statusCode = is_array($reply['statusCode']) ? reset($reply['statusCode']) : $reply['statusCode'];
// status code 0 is a connection timeout
if (!$statusCode && $secureConnection) {
if (preg_match('~https?://(?:update|store)\\.woltlab\\.com~', $updateServer->serverURL)) {
// woltlab.com servers are most likely to be available, thus we assume that SSL connections are dropped
RemoteFile::disableSSL();
}
// retry via http
$this->getPackageUpdateXML($updateServer, true);
return;
}
throw new SystemException(WCF::getLanguage()->get('wcf.acp.package.update.error.listNotFound') . ' (' . $statusCode . ')');
}
// parse given package update xml
$allNewPackages = false;
if ($updateServer->apiVersion == '2.0' || $reply['statusCode'] != 304) {
$allNewPackages = $this->parsePackageUpdateXML($reply['body']);
}
$data = array('lastUpdateTime' => TIME_NOW, 'status' => 'online', 'errorMessage' => '');
// check if server indicates support for a newer API
if ($updateServer->apiVersion == '2.0' && !empty($reply['httpHeaders']['wcf-update-server-api'])) {
$apiVersions = explode(' ', reset($reply['httpHeaders']['wcf-update-server-api']));
if (in_array('2.1', $apiVersions)) {
$data['apiVersion'] = '2.1';
}
}
$metaData = array();
if ($updateServer->apiVersion == '2.1' || isset($data['apiVersion']) && $data['apiVersion'] == '2.1') {
if (empty($reply['httpHeaders']['etag']) && empty($reply['httpHeaders']['last-modified'])) {
throw new SystemException("Missing required HTTP headers 'etag' and 'last-modified'.");
} else {
if (empty($reply['httpHeaders']['wcf-update-server-ssl'])) {
throw new SystemException("Missing required HTTP header 'wcf-update-server-ssl'.");
}
}
$metaData['list'] = array();
if (!empty($reply['httpHeaders']['etag'])) {
$metaData['list']['etag'] = reset($reply['httpHeaders']['etag']);
}
if (!empty($reply['httpHeaders']['last-modified'])) {
$metaData['list']['lastModified'] = reset($reply['httpHeaders']['last-modified']);
}
$metaData['ssl'] = reset($reply['httpHeaders']['wcf-update-server-ssl']) == 'true' ? true : false;
}
$data['metaData'] = serialize($metaData);
unset($request, $reply);
if ($allNewPackages !== false) {
// purge package list
$sql = "DELETE FROM\twcf" . WCF_N . "_package_update\n\t\t\t\tWHERE\t\tpackageUpdateServerID = ?";
$statement = WCF::getDB()->prepareStatement($sql);
$statement->execute(array($updateServer->packageUpdateServerID));
// save packages
if (!empty($allNewPackages)) {
$this->savePackageUpdates($allNewPackages, $updateServer->packageUpdateServerID);
}
unset($allNewPackages);
}
// update server status
$updateServerEditor = new PackageUpdateServerEditor($updateServer);
$updateServerEditor->update($data);
}
