public static function run()
{
$dotenv = new \Dotenv\Dotenv(TXTROOT);
$dotenv->load();
if (isset($_SERVER['HTTP_USER_AGENT']) && stripos($_SERVER['HTTP_USER_AGENT'], 'Slackbot-LinkExpanding') !== false) {
Response::sendResponse(Response::HTTP_403, ['error' => "No slackbots allowed"]);
exit;
}
if (!getenv('REDIS_URL')) {
Response::sendResponse(Response::HTTP_500, ['error' => "REDIS_URL environment variable required"]);
exit;
}
if (!Request::isGet() && !Request::isPost()) {
Response::sendResponse(Response::HTTP_405, ['error' => "Please use a GET or POST"]);
exit;
}
if (getenv('AUTH') && (!isset($_POST['auth']) || !static::compareStrings(getenv('AUTH'), $_POST['auth']))) {
Response::sendResponse(Response::HTTP_401, ['error' => "'auth' parameter is missing or invalid"]);
exit;
}
// header('Access-Control-Allow-Origin: ' . $_SERVER['ORIGIN']);
// header('Access-Control-Allow-Credentials: true');
// Access-Control-Allow-Methods: GET, POST
// x-frame-options
$redis = Redis::getRedis(getenv('REDIS_URL'));
$hash = ltrim(Request::getPath(), '/');
if ($hash) {
if ($hash == 'robots.txt') {
Response::setStatus(Response::HTTP_200);
Response::setContentType(Response::TEXT);
Response::setContent("User-agent: *\nDisallow: /");
Response::send();
exit;
}
if (Request::isPost()) {
Response::sendResponse(Response::HTTP_405, ['error' => "Cannot post to a hash"]);
exit;
}
if (strlen($hash) > Redis::MAX_KEY_LENGTH || !preg_match('/^[A-Za-z0-9]+$/', $hash)) {
Response::sendResponse(Response::HTTP_404, ['error' => "Invalid hash"]);
exit;
}
$data = $redis->hGetAll(Redis::PREFIX . $hash);
if (!$data) {
Response::sendResponse(Response::HTTP_404, ['error' => "Hash not found"]);
exit;
}
$datum = Datum::createFromArray($data);
if ($datum->once) {
$redis->del(Redis::PREFIX . $hash);
}
// set proper cache header, esp for read-once
// actually, PROBABLY NOT A GOOD IDEA, esp for things that are meant to expire. we should do the opposite - dont cache
// Response::setCacheForeverHeaders();
Response::sendResponse('datum', ['datum' => $datum]);
exit;
}
if (Request::isGet()) {
Response::sendResponse('home', ['domain' => 'http' . (Request::isSSL() ? 's' : '') . '://' . Request::getHost()]);
exit;
} else {
$data = isset($_POST['data']) ? $_POST['data'] : file_get_contents("php://input");
if (!$data) {
Response::sendResponse(Response::HTTP_400, ['error' => 'No data submitted']);
exit;
}
$datum = new Datum(trim($data), Datum::T_TEXT, Request::isFlagOn('once'));
$key = substr(static::randId(), 0, Redis::MAX_KEY_LENGTH);
$ttl = isset($_POST['ttl']) ? max(1, min((int) $_POST['ttl'], Redis::MAX_TTL)) : Redis::MAX_TTL;
$redis->hMSet(Redis::PREFIX . $key, $datum->toArray());
$redis->expire(Redis::PREFIX . $key, $ttl);
$url = 'http' . (Request::isSSL() ? 's' : '') . '://' . Request::getHost() . '/' . $key;
Response::sendResponse(Response::HTTP_201, ['url' => $url, 'ttl' => $ttl, '_textKey' => 'url']);
exit;
}
}
