rss-bridge/lib/RssBridge.php
2024-01-25 18:20:02 +01:00

125 lines
4.6 KiB
PHP

<?php
final class RssBridge
{
private static CacheInterface $cache;
private static Logger $logger;
private static HttpClient $httpClient;
public function __construct()
{
self::$logger = new SimpleLogger('rssbridge');
if (Debug::isEnabled()) {
self::$logger->addHandler(new StreamHandler(Logger::DEBUG));
} else {
self::$logger->addHandler(new StreamHandler(Logger::INFO));
}
self::$httpClient = new CurlHttpClient();
$cacheFactory = new CacheFactory(self::$logger);
if (Debug::isEnabled()) {
self::$cache = $cacheFactory->create('array');
} else {
self::$cache = $cacheFactory->create();
}
}
public function main(array $argv = []): Response
{
if ($argv) {
parse_str(implode('&', array_slice($argv, 1)), $cliArgs);
$request = Request::fromCli($cliArgs);
} else {
$request = Request::fromGlobals();
}
foreach ($request->toArray() as $key => $value) {
if (!is_string($value)) {
return new Response(render(__DIR__ . '/../templates/error.html.php', [
'message' => "Query parameter \"$key\" is not a string.",
]), 400);
}
}
if (Configuration::getConfig('system', 'enable_maintenance_mode')) {
return new Response(render(__DIR__ . '/../templates/error.html.php', [
'title' => '503 Service Unavailable',
'message' => 'RSS-Bridge is down for maintenance.',
]), 503);
}
// HTTP Basic auth check
if (Configuration::getConfig('authentication', 'enable')) {
if (Configuration::getConfig('authentication', 'password') === '') {
return new Response('The authentication password cannot be the empty string', 500);
}
$user = $request->server('PHP_AUTH_USER');
$password = $request->server('PHP_AUTH_PW');
if ($user === null || $password === null) {
$html = render(__DIR__ . '/../templates/error.html.php', [
'message' => 'Please authenticate in order to access this instance!',
]);
return new Response($html, 401, ['WWW-Authenticate' => 'Basic realm="RSS-Bridge"']);
}
if (
(Configuration::getConfig('authentication', 'username') !== $user)
|| (! hash_equals(Configuration::getConfig('authentication', 'password'), $password))
) {
$html = render(__DIR__ . '/../templates/error.html.php', [
'message' => 'Please authenticate in order to access this instance!',
]);
return new Response($html, 401, ['WWW-Authenticate' => 'Basic realm="RSS-Bridge"']);
}
// At this point the username and password was correct
}
// Add token as attribute to request
$request = $request->withAttribute('token', $request->get('token'));
// Token authentication check
if (Configuration::getConfig('authentication', 'token')) {
if (! $request->attribute('token')) {
return new Response(render(__DIR__ . '/../templates/token.html.php', [
'message' => '',
]), 401);
}
if (! hash_equals(Configuration::getConfig('authentication', 'token'), $request->attribute('token'))) {
return new Response(render(__DIR__ . '/../templates/token.html.php', [
'message' => 'Invalid token',
]), 401);
}
}
$action = $request->get('action', 'Frontpage');
$actionName = strtolower($action) . 'Action';
$actionName = implode(array_map('ucfirst', explode('-', $actionName)));
$filePath = __DIR__ . '/../actions/' . $actionName . '.php';
if (!file_exists($filePath)) {
return new Response(render(__DIR__ . '/../templates/error.html.php', ['message' => 'Invalid action']), 400);
}
$className = '\\' . $actionName;
$actionObject = new $className();
$response = $actionObject->execute($request);
if (is_string($response)) {
$response = new Response($response);
}
return $response;
}
public static function getCache(): CacheInterface
{
return self::$cache;
}
public static function getLogger(): Logger
{
return self::$logger;
}
public static function getHttpClient(): HttpClient
{
return self::$httpClient;
}
}