/**
* @covers Imbo\Model\Error::createFromException
*/
public function testWillUseImageChecksumAsImageIdentifierIfRequestHasAnImageWhenCreatingError()
{
$exception = new RuntimeException('You wronged', 400);
$exception->setImboErrorCode(123);
$request = $this->getMock('Imbo\\Http\\Request\\Request');
$image = $this->getMock('Imbo\\Model\\Image');
$image->expects($this->once())->method('getChecksum')->will($this->returnValue('checksum'));
$request->expects($this->once())->method('getImage')->will($this->returnValue($image));
$request->expects($this->never())->method('checksum');
$model = Error::createFromException($exception, $request);
$this->assertSame(123, $model->getImboErrorCode());
$this->assertSame('checksum', $model->getImageIdentifier());
}
/**
* {@inheritdoc}
*/
public function authenticate(EventInterface $event)
{
$response = $event->getResponse();
$request = $event->getRequest();
// Whether or not the authentication info is in the request headers
$fromHeaders = $request->headers->has('x-imbo-authenticate-timestamp') && $request->headers->has('x-imbo-authenticate-signature');
// Fetch timestamp header, fallback to query param
$timestamp = $request->headers->get('x-imbo-authenticate-timestamp', $request->query->get('timestamp'));
if (!$timestamp) {
$exception = new RuntimeException('Missing authentication timestamp', 400);
$exception->setImboErrorCode(Exception::AUTH_MISSING_PARAM);
} else {
if (!$this->timestampIsValid($timestamp)) {
$exception = new RuntimeException('Invalid timestamp: ' . $timestamp, 400);
$exception->setImboErrorCode(Exception::AUTH_INVALID_TIMESTAMP);
} else {
if ($this->timestampHasExpired($timestamp)) {
$exception = new RuntimeException('Timestamp has expired: ' . $timestamp, 400);
$exception->setImboErrorCode(Exception::AUTH_TIMESTAMP_EXPIRED);
}
}
}
if (isset($exception)) {
throw $exception;
}
// Fetch signature header, fallback to query param
$signature = $request->headers->get('x-imbo-authenticate-signature', $request->query->get('signature'));
if (!$signature) {
$exception = new RuntimeException('Missing authentication signature', 400);
$exception->setImboErrorCode(Exception::AUTH_MISSING_PARAM);
}
if (isset($exception)) {
throw $exception;
}
$publicKey = $request->getPublicKey();
$privateKeys = $event->getUserLookup()->getPrivateKeys($publicKey, UserLookupInterface::MODE_READ_WRITE) ?: [];
$url = $request->getRawUri();
if (!$fromHeaders) {
// Remove the signature and timestamp from the query parameters as they are not used
// when generating the HMAC
$url = rtrim(preg_replace('/(?<=(\\?|&))(signature|timestamp)=[^&]+&?/', '', $url), '&?');
}
// Add the URL used for auth to the response headers
$response->headers->set('X-Imbo-AuthUrl', $url);
if (!$this->signatureIsValid($request->getMethod(), $url, $publicKey, $privateKeys, $timestamp, $signature)) {
$exception = new RuntimeException('Signature mismatch', 400);
$exception->setImboErrorCode(Exception::AUTH_SIGNATURE_MISMATCH);
throw $exception;
}
}
/**
* {@inheritdoc}
*/
public function authenticate(EventInterface $event)
{
$response = $event->getResponse();
$request = $event->getRequest();
$config = $event->getConfig();
// Whether or not the authentication info is in the request headers
$fromHeaders = $request->headers->has('x-imbo-authenticate-timestamp') && $request->headers->has('x-imbo-authenticate-signature');
// Fetch timestamp header, fallback to query param
$timestamp = $request->headers->get('x-imbo-authenticate-timestamp', $request->query->get('timestamp'));
if (!$timestamp) {
$exception = new RuntimeException('Missing authentication timestamp', 400);
$exception->setImboErrorCode(Exception::AUTH_MISSING_PARAM);
} else {
if (!$this->timestampIsValid($timestamp)) {
$exception = new RuntimeException('Invalid timestamp: ' . $timestamp, 400);
$exception->setImboErrorCode(Exception::AUTH_INVALID_TIMESTAMP);
} else {
if ($this->timestampHasExpired($timestamp)) {
$exception = new RuntimeException('Timestamp has expired: ' . $timestamp, 400);
$exception->setImboErrorCode(Exception::AUTH_TIMESTAMP_EXPIRED);
}
}
}
if (isset($exception)) {
throw $exception;
}
// Fetch signature header, fallback to query param
$signature = $request->headers->get('x-imbo-authenticate-signature', $request->query->get('signature'));
if (!$signature) {
$exception = new RuntimeException('Missing authentication signature', 400);
$exception->setImboErrorCode(Exception::AUTH_MISSING_PARAM);
}
if (isset($exception)) {
throw $exception;
}
$publicKey = $request->getPublicKey();
$privateKey = $event->getAccessControl()->getPrivateKey($publicKey);
$url = $request->getRawUri();
if (!$fromHeaders) {
// Remove the signature and timestamp from the query parameters as they are not used
// when generating the HMAC
$url = rtrim(preg_replace('/(?<=(\\?|&))(signature|timestamp)=[^&]+&?/', '', $url), '&?');
}
// See if we should modify the protocol for the incoming request
$uris = [$url];
$protocol = $config['authentication']['protocol'];
if ($protocol === 'both') {
$uris = [preg_replace('#^https?#', 'http', $url), preg_replace('#^https?#', 'https', $url)];
} else {
if (in_array($protocol, ['http', 'https'])) {
$uris = [preg_replace('#^https?#', $protocol, $url)];
}
}
// Add the URL used for auth to the response headers
$response->headers->set('X-Imbo-AuthUrl', implode(', ', $uris));
foreach ($uris as $uri) {
if ($this->signatureIsValid($request->getMethod(), $uri, $publicKey, $privateKey, $timestamp, $signature)) {
return;
}
}
$exception = new RuntimeException('Signature mismatch', 400);
$exception->setImboErrorCode(Exception::AUTH_SIGNATURE_MISMATCH);
throw $exception;
}
/**
* Run the application
*/
public function run(array $config)
{
// Request and response objects
$request = Request::createFromGlobals();
Request::setTrustedProxies($config['trustedProxies']);
$response = new Response();
$response->setPublic();
$response->headers->set('X-Imbo-Version', Version::VERSION);
// Database and storage adapters
$database = $config['database'];
if (is_callable($database) && !$database instanceof DatabaseInterface) {
$database = $database();
}
if (!$database instanceof DatabaseInterface) {
throw new InvalidArgumentException('Invalid database adapter', 500);
}
$storage = $config['storage'];
if (is_callable($storage) && !$storage instanceof StorageInterface) {
$storage = $storage();
}
if (!$storage instanceof StorageInterface) {
throw new InvalidArgumentException('Invalid storage adapter', 500);
}
// User lookup adapters
$userLookup = $config['auth'];
// Construct an ArrayStorage instance if the auth details is an array
if (is_array($userLookup)) {
$userLookup = new Auth\ArrayStorage($userLookup);
}
// Make sure the "auth" part of the configuration is an instance of the user lookup
// interface
if (!$userLookup instanceof Auth\UserLookupInterface) {
throw new InvalidArgumentException('Invalid auth configuration', 500);
}
// Create a router based on the routes in the configuration and internal routes
$router = new Router($config['routes']);
// Create the event manager and the event template
$eventManager = new EventManager();
$event = new Event();
$event->setArguments(array('request' => $request, 'response' => $response, 'database' => $database, 'storage' => $storage, 'userLookup' => $userLookup, 'config' => $config, 'manager' => $eventManager));
$eventManager->setEventTemplate($event);
// A date formatter helper
$dateFormatter = new Helpers\DateFormatter();
// Response formatters
$formatters = array('json' => new Formatter\JSON($dateFormatter), 'xml' => new Formatter\XML($dateFormatter));
$contentNegotiation = new Http\ContentNegotiation();
// Collect event listener data
$eventListeners = array('Imbo\\Resource\\Index', 'Imbo\\Resource\\Status', 'Imbo\\Resource\\Stats', 'Imbo\\Resource\\GlobalShortUrl', 'Imbo\\Resource\\ShortUrls', 'Imbo\\Resource\\ShortUrl', 'Imbo\\Resource\\User', 'Imbo\\Resource\\Images', 'Imbo\\Resource\\Image', 'Imbo\\Resource\\Metadata', 'Imbo\\Http\\Response\\ResponseFormatter' => array('formatters' => $formatters, 'contentNegotiation' => $contentNegotiation), 'Imbo\\EventListener\\DatabaseOperations', 'Imbo\\EventListener\\StorageOperations', 'Imbo\\Image\\ImagePreparation', 'Imbo\\EventListener\\ImageTransformer', 'Imbo\\EventListener\\ResponseSender', 'Imbo\\EventListener\\ResponseETag');
foreach ($eventListeners as $listener => $params) {
if (is_string($params)) {
$listener = $params;
$params = array();
}
$eventManager->addEventHandler($listener, $listener, $params)->addCallbacks($listener, $listener::getSubscribedEvents());
}
// Event listener initializers
foreach ($config['eventListenerInitializers'] as $name => $initializer) {
if (!$initializer) {
// The initializer has been disabled via config
continue;
}
if (is_string($initializer)) {
// The initializer has been specified as a string, representing a class name. Create
// an instance
$initializer = new $initializer();
}
if (!$initializer instanceof InitializerInterface) {
throw new InvalidArgumentException('Invalid event listener initializer: ' . $name, 500);
}
$eventManager->addInitializer($initializer);
}
// Listeners from configuration
foreach ($config['eventListeners'] as $name => $definition) {
if (!$definition) {
// This occurs when a user disables a default event listener
continue;
}
if (is_string($definition)) {
// Class name
$eventManager->addEventHandler($name, $definition)->addCallbacks($name, $definition::getSubscribedEvents());
continue;
}
if (is_callable($definition) && !$definition instanceof ListenerInterface) {
// Callable piece of code which is not an implementation of the listener interface
$definition = $definition();
}
if ($definition instanceof ListenerInterface) {
$eventManager->addEventHandler($name, $definition)->addCallbacks($name, $definition::getSubscribedEvents());
continue;
}
if (is_array($definition) && !empty($definition['listener'])) {
$listener = $definition['listener'];
$params = is_string($listener) && isset($definition['params']) ? $definition['params'] : array();
$publicKeys = isset($definition['publicKeys']) ? $definition['publicKeys'] : array();
if (is_callable($listener) && !$listener instanceof ListenerInterface) {
$listener = $listener();
}
if (!is_string($listener) && !$listener instanceof ListenerInterface) {
throw new InvalidArgumentException('Invalid event listener definition', 500);
}
$eventManager->addEventHandler($name, $listener, $params)->addCallbacks($name, $listener::getSubscribedEvents(), $publicKeys);
} else {
if (is_array($definition) && !empty($definition['callback']) && !empty($definition['events'])) {
$priority = 0;
$events = array();
$publicKeys = array();
if (isset($definition['priority'])) {
$priority = (int) $definition['priority'];
}
if (isset($definition['publicKeys'])) {
$publicKeys = $definition['publicKeys'];
}
foreach ($definition['events'] as $event => $p) {
if (is_int($event)) {
$event = $p;
$p = $priority;
}
$events[$event] = $p;
}
$eventManager->addEventHandler($name, $definition['callback'])->addCallbacks($name, $events, $publicKeys);
} else {
throw new InvalidArgumentException('Invalid event listener definition', 500);
}
}
}
// Custom resources
foreach ($config['resources'] as $name => $resource) {
if (is_callable($resource)) {
$resource = $resource();
}
$eventManager->addEventHandler($name, $resource)->addCallbacks($name, $resource::getSubscribedEvents());
}
try {
// Route the request
$router->route($request);
$eventManager->trigger('route.match');
// Create the resource
$routeName = (string) $request->getRoute();
if (isset($config['resources'][$routeName])) {
$resource = $config['resources'][$routeName];
if (is_callable($resource)) {
$resource = $resource();
}
if (is_string($resource)) {
$resource = new $resource();
}
if (!$resource instanceof ResourceInterface) {
throw new InvalidArgumentException('Invalid resource class for route: ' . $routeName, 500);
}
} else {
$className = 'Imbo\\Resource\\' . ucfirst($routeName);
$resource = new $className();
}
// Inform the user agent of which methods are allowed against this resource
$response->headers->set('Allow', $resource->getAllowedMethods(), false);
if ($publicKey = $request->getPublicKey()) {
// Ensure that the public key actually exists
if (!$userLookup->publicKeyExists($publicKey)) {
$e = new RuntimeException('Public key not found', 404);
$e->setImboErrorCode(Exception::AUTH_UNKNOWN_PUBLIC_KEY);
throw $e;
}
}
$methodName = strtolower($request->getMethod());
// Generate the event name based on the accessed resource and the HTTP method
$eventName = $routeName . '.' . $methodName;
if (!$eventManager->hasListenersForEvent($eventName)) {
throw new RuntimeException('Method not allowed', 405);
}
$eventManager->trigger($eventName)->trigger('response.negotiate');
} catch (Exception $exception) {
$negotiated = false;
$error = Error::createFromException($exception, $request);
$response->setError($error);
// If the error is not from the previous attempt at doing content negotiation, force
// another round since the model has changed into an error model.
if ($exception->getCode() !== 406) {
try {
$eventManager->trigger('response.negotiate');
$negotiated = true;
} catch (Exception $exception) {
// The client does not accept any of the content types. Generate a new error
$error = Error::createFromException($exception, $request);
$response->setError($error);
}
}
// Try to negotiate in a non-strict manner if the response format still has not been
// chosen
if (!$negotiated) {
$eventManager->trigger('response.negotiate', array('noStrict' => true));
}
}
// Send the response
$eventManager->trigger('response.send');
}