public function onHandshake(Request $request, Response $response)
{
// During handshakes, you should always check the origin header, otherwise any site will
// be able to connect to your endpoint. Websockets are not restricted by the same-origin-policy!
$origin = $request->getHeader("origin");
if ($origin !== "http://localhost:1337") {
$response->setStatus(403);
$response->send("<h1>origin not allowed</h1>");
return null;
}
// returned values will be passed to onOpen, that way you can pass cookie values or the whole request object.
return $request->getConnectionInfo()["client_addr"];
}
public function doLogOut(Request $request, Response $response)
{
$session = new Session($request);
(yield $session->open());
(yield $session->destroy());
$response->setStatus(302);
$response->setHeader("location", "/");
$response->send("");
}
public function handle(Request $request, Response $response, array $args)
{
$endpoint = $request->getLocalVar("chat.api.endpoint");
$user = $request->getLocalVar("chat.api.user");
if (!$endpoint || !$user) {
// if this happens, something's really wrong, e.g. wrong order of callables
$response->setStatus(500);
$response->send("");
}
foreach ($args as $key => $arg) {
if (is_numeric($arg)) {
$args[$key] = (int) $arg;
}
}
foreach ($request->getQueryVars() as $key => $value) {
// Don't allow overriding URL parameters
if (isset($args[$key])) {
continue;
}
if (is_numeric($value)) {
$args[$key] = (int) $value;
} else {
if (is_string($value)) {
$args[$key] = $value;
} else {
$result = new Error("bad_request", "invalid query parameter types", 400);
$this->writeResponse($request, $response, $result);
return;
}
}
}
$args = $args ? (object) $args : new stdClass();
$body = (yield $request->getBody());
$payload = $body ? json_decode($body) : null;
$result = (yield $this->chat->process(new StandardRequest($endpoint, $args, $payload), $user));
$this->writeResponse($request, $response, $result);
}
/**
* Handles all hooks.
*
* @param Request $request HTTP request
* @param Response $response HTTP response
* @param array $args URL args
*/
public function handle(Request $request, Response $response, array $args)
{
$response->setHeader("content-type", "text/plain");
$token = $request->getQueryVars()["token"] ?? "";
if (!$token || !is_string($token)) {
$response->setStatus(401);
$response->send("Failure: No token was provided.");
return;
}
// use @ so we don't have to check for invalid strings manually
$token = (string) @hex2bin($token);
$hook = (yield $this->hookRepository->get($args["id"]));
if (!$hook) {
$response->setStatus(404);
$response->send("Failure: Hook does not exist.");
return;
}
if (!hash_equals($hook->token, $token)) {
$response->setStatus(403);
$response->send("Failure: Provided token doesn't match.");
return;
}
$name = $args["service"];
if (!isset($this->services[$name])) {
$response->setStatus(404);
$response->send("Failure: Unknown service.");
return;
}
$contentType = strtok($request->getHeader("content-type"), ";");
$body = (yield $request->getBody());
switch ($contentType) {
case "application/json":
$payload = json_decode($body);
break;
case "application/x-www-form-urlencoded":
parse_str($body, $payload);
$payload = json_decode(json_encode($payload));
break;
default:
$response->setStatus(415);
$response->send("Failure: Content-type not supported.");
return;
}
$service = $this->services[$name];
$headers = $request->getAllHeaders();
$event = $service->getEventName($headers, $payload);
if (!isset($this->schemas[$name][$event])) {
$response->setStatus(400);
$response->send("Failure: Event not supported.");
return;
}
$schema = $this->schemas[$name][$event];
$this->validator->reset();
$this->validator->check($payload, $schema);
if (!$this->validator->isValid()) {
$errors = $this->validator->getErrors();
$errors = array_reduce($errors, function (string $carry, array $item) : string {
if ($item["property"]) {
return $carry . sprintf("\n%s: %s", $item["property"], $item["message"]);
} else {
return $carry . "\n" . $item["message"];
}
}, "");
$response->setStatus(400);
$response->send("Failure: Payload validation failed." . $errors);
return;
}
$message = $service->handle($headers, $payload);
try {
if ($message) {
$req = (new HttpRequest())->setMethod("PUT")->setUri($this->config["api"] . "/messages")->setHeader("authorization", "Basic " . base64_encode("{$this->config['user_id']}:{$this->config['token']}"))->setBody(json_encode(["room_id" => $hook->room_id, "text" => $message->getText(), "data" => $message->getData()]));
$resp = (yield $this->http->request($req));
if (intval($resp->getStatus() / 100) !== 2) {
$message = "API request failed: " . $resp->getStatus();
if ($resp->getBody()) {
$message .= "\n" . $resp->getBody();
}
throw new Exception($message);
}
}
$response->send("Success: " . ($message ? "Message sent." : "Message skipped."));
} catch (Exception $e) {
$response->setStatus(500);
$response->send("Failure: Couldn't persist message.");
}
}
public function onHandshake(Request $request, Response $response)
{
$origin = $request->getHeader("origin");
if (!isOriginAllowed($origin)) {
$response->setStatus(400);
$response->setReason("Invalid Origin");
$response->send("<h1>Invalid Origin</h1>");
return null;
}
if ($this->eventSub->getConnectionState() !== ConnectionState::CONNECTED) {
$response->setStatus(503);
$response->setReason("Service unavailable");
$response->send("");
return null;
}
return new Session($request);
}