PHP EventInterface::getRequest方法代码示例

 /**
  * Prepare an image
  *
  * This method should prepare an image object from php://input. The method must also figure out
  * the width, height, mime type and extension of the image.
  *
  * @param EventInterface $event The current event
  * @throws ImageException
  */
 public function prepareImage(EventInterface $event)
 {
     $request = $event->getRequest();
     // Fetch image data from input
     $imageBlob = $request->getContent();
     if (empty($imageBlob)) {
         $e = new ImageException('No image attached', 400);
         $e->setImboErrorCode(Exception::IMAGE_NO_IMAGE_ATTACHED);
         throw $e;
     }
     // Open the image with imagick to fetch the mime type
     $imagick = new Imagick();
     try {
         $imagick->readImageBlob($imageBlob);
         $mime = $imagick->getImageMimeType();
         $size = $imagick->getImageGeometry();
     } catch (ImagickException $e) {
         $e = new ImageException('Invalid image', 415);
         $e->setImboErrorCode(Exception::IMAGE_INVALID_IMAGE);
         throw $e;
     }
     if (!Image::supportedMimeType($mime)) {
         $e = new ImageException('Unsupported image type: ' . $mime, 415);
         $e->setImboErrorCode(Exception::IMAGE_UNSUPPORTED_MIMETYPE);
         throw $e;
     }
     // Store relevant information in the image instance and attach it to the request
     $image = new Image();
     $image->setMimeType($mime)->setExtension(Image::getFileExtension($mime))->setBlob($imageBlob)->setWidth($size['width'])->setHeight($size['height'])->setOriginalChecksum(md5($imageBlob));
     $request->setImage($image);
 }

 /**
  * Right before the response is sent to the client, check if any HTTP cache control headers
  * have explicity been set for this response. If not, apply the configured defaults.
  *
  * @param EventInterface $event The event instance
  */
 public function setHeaders(EventInterface $event)
 {
     $method = $event->getRequest()->getMethod();
     // Obviously we shouldn't bother doing any HTTP caching logic for non-GET/HEAD requests
     if ($method !== 'GET' && $method !== 'HEAD') {
         return;
     }
     $response = $event->getResponse();
     $headers = $event->getResponse()->headers;
     // Imbo defaults to 'public' as cache-control value - if it has changed from this value,
     // assume the resource requested has explicitly defined its own caching rules and fall back
     if ($headers->get('Cache-Control') !== 'public') {
         return;
     }
     // Get configured HTTP cache defaults from configuration, then apply them
     $config = $event->getConfig()['httpCacheHeaders'];
     if (isset($config['maxAge'])) {
         $response->setMaxAge((int) $config['maxAge']);
     }
     if (isset($config['sharedMaxAge'])) {
         $response->setSharedMaxAge($config['sharedMaxAge']);
     }
     if (isset($config['public']) && $config['public']) {
         $response->setPublic();
     } else {
         if (isset($config['public'])) {
             $response->setPrivate();
         }
     }
     if (isset($config['mustRevalidate']) && $config['mustRevalidate']) {
         $headers->addCacheControlDirective('must-revalidate');
     }
 }

 /**
  * Using the configured image identifier generator, attempt to generate a unique image
  * identifier for the given image until we either have found a unique ID or we hit the maximum
  * allowed attempts.
  *
  * @param EventInterface $event The current event
  * @param Image $image The event to generate the image identifier for
  * @return string
  * @throws ImageException
  */
 private function generateImageIdentifier(EventInterface $event, Image $image)
 {
     $database = $event->getDatabase();
     $config = $event->getConfig();
     $user = $event->getRequest()->getUser();
     $imageIdentifierGenerator = $config['imageIdentifierGenerator'];
     if (is_callable($imageIdentifierGenerator) && !$imageIdentifierGenerator instanceof GeneratorInterface) {
         $imageIdentifierGenerator = $imageIdentifierGenerator();
     }
     if ($imageIdentifierGenerator->isDeterministic()) {
         return $imageIdentifierGenerator->generate($image);
     }
     // Continue generating image identifiers until we get one that does not already exist
     $maxAttempts = 100;
     $attempts = 0;
     do {
         $imageIdentifier = $imageIdentifierGenerator->generate($image);
         $attempts++;
     } while ($attempts < $maxAttempts && $database->imageExists($user, $imageIdentifier));
     // Did we reach our max attempts limit?
     if ($attempts === $maxAttempts) {
         $e = new ImageException('Failed to generate unique image identifier', 503);
         $e->setImboErrorCode(Exception::IMAGE_IDENTIFIER_GENERATION_FAILED);
         // Tell the client it's OK to retry later
         $event->getResponse()->headers->set('Retry-After', 1);
         throw $e;
     }
     return $imageIdentifier;
 }

 /**
  * Add access rules for the specified public key
  *
  * @param EventInterface $event The current event
  */
 public function addRules(EventInterface $event)
 {
     $accessControl = $event->getAccessControl();
     if (!$accessControl instanceof MutableAdapterInterface) {
         throw new ResourceException('Access control adapter is immutable', 405);
     }
     $request = $event->getRequest();
     $publicKey = $request->getRoute()->get('publickey');
     $data = json_decode($request->getContent(), true);
     if (!is_array($data)) {
         throw new InvalidArgumentException('No access rule data provided', 400);
     }
     // If a single rule was provided, wrap it in an array
     if (!count($data) || !isset($data[0])) {
         $data = [$data];
     }
     $accessControl = $event->getAccessControl();
     // Perform rule validation
     foreach ($data as $rule) {
         $this->validateRule($event, $rule);
     }
     // Insert the rules
     foreach ($data as $rule) {
         $accessControl->addAccessRule($publicKey, $rule);
     }
 }

 /**
  * Transform images
  *
  * @param EventInterface $event The current event
  */
 public function transform(EventInterface $event)
 {
     $request = $event->getRequest();
     $image = $event->getResponse()->getModel();
     $eventManager = $event->getManager();
     $presets = $event->getConfig()['transformationPresets'];
     // Fetch transformations specifed in the query and transform the image
     foreach ($request->getTransformations() as $transformation) {
         if (isset($presets[$transformation['name']])) {
             // Preset
             foreach ($presets[$transformation['name']] as $name => $params) {
                 if (is_int($name)) {
                     // No hardcoded params, use the ones from the request
                     $name = $params;
                     $params = $transformation['params'];
                 } else {
                     // Some hardcoded params. Merge with the ones from the request, making the
                     // hardcoded params overwrite the ones from the request
                     $params = array_replace($transformation['params'], $params);
                 }
                 $eventManager->trigger('image.transformation.' . strtolower($name), array('image' => $image, 'params' => $params));
             }
         } else {
             // Regular transformation
             $eventManager->trigger('image.transformation.' . strtolower($transformation['name']), array('image' => $image, 'params' => $transformation['params']));
         }
     }
 }

 /**
  * {@inheritdoc}
  */
 public function checkAccessToken(EventInterface $event)
 {
     $request = $event->getRequest();
     $response = $event->getResponse();
     $query = $request->query;
     $eventName = $event->getName();
     if (($eventName === 'image.get' || $eventName === 'image.head') && $this->isWhitelisted($request)) {
         // All transformations in the request are whitelisted. Skip the access token check
         return;
     }
     // If the response has a short URL header, we can skip the access token check
     if ($response->headers->has('X-Imbo-ShortUrl')) {
         return;
     }
     if (!$query->has('accessToken')) {
         throw new RuntimeException('Missing access token', 400);
     }
     $token = $query->get('accessToken');
     // First the the raw un-encoded URI, then the URI as is
     $uris = array($request->getRawUri(), $request->getUriAsIs());
     $privateKeys = $event->getUserLookup()->getPrivateKeys($request->getPublicKey()) ?: [];
     foreach ($uris as $uri) {
         // Remove the access token from the query string as it's not used to generate the HMAC
         $uri = rtrim(preg_replace('/(?<=(\\?|&))accessToken=[^&]+&?/', '', $uri), '&?');
         foreach ($privateKeys as $privateKey) {
             $correctToken = hash_hmac('sha256', $uri, $privateKey);
             if ($correctToken === $token) {
                 return;
             }
         }
     }
     throw new RuntimeException('Incorrect access token', 400);
 }

 /**
  * Send the response
  *
  * @param EventInterface $event The current event
  */
 public function send(EventInterface $event)
 {
     $request = $event->getRequest();
     $response = $event->getResponse();
     // Vary on public key header. Public key specified in query and URL path doesn't have to be
     // taken into consideration, since they will have varying URLs
     $response->setVary('X-Imbo-PublicKey', false);
     // Optionally mark this response as not modified
     $response->isNotModified($request);
     // Inject a possible image identifier into the response headers
     $imageIdentifier = null;
     if ($image = $request->getImage()) {
         // The request has an image. This means that an image was just added.
         // Get the image identifier from the image model
         $imageIdentifier = $image->getImageIdentifier();
     } else {
         if ($identifier = $request->getImageIdentifier()) {
             // An image identifier exists in the request URI, use that
             $imageIdentifier = $identifier;
         }
     }
     if ($imageIdentifier) {
         $response->headers->set('X-Imbo-ImageIdentifier', $imageIdentifier);
     }
     $response->send();
 }

 /**
  * Update the image model blob before storing it in case an event listener has changed the
  * image
  *
  * @param EventInterface $event The event instance
  */
 public function updateModelBeforeStoring(EventInterface $event)
 {
     $image = $event->getRequest()->getImage();
     if ($image->hasBeenTransformed()) {
         $image->setBlob($this->imagick->getImageBlob());
     }
 }

 /**
  * Handle GET and HEAD requests
  *
  * @param EventInterface $event The current event
  */
 public function getImages(EventInterface $event)
 {
     $acl = $event->getAccessControl();
     $missingAccess = [];
     $users = $event->getRequest()->getUsers();
     foreach ($users as $user) {
         $hasAccess = $acl->hasAccess($event->getRequest()->getPublicKey(), 'images.get', $user);
         if (!$hasAccess) {
             $missingAccess[] = $user;
         }
     }
     if (!empty($missingAccess)) {
         throw new RuntimeException('Public key does not have access to the users: [' . implode(', ', $missingAccess) . ']', 400);
     }
     $event->getManager()->trigger('db.images.load', ['users' => $users]);
 }

 /**
  * Add the HashTwo header to the response
  *
  * @param EventInterface $event The current event
  */
 public function addHeader(EventInterface $event)
 {
     $request = $event->getRequest();
     $response = $event->getResponse();
     $user = $request->getUser();
     $imageIdentifier = $response->getModel()->getImageIdentifier();
     $response->headers->set($this->header, ['imbo;image;' . $user . ';' . $imageIdentifier, 'imbo;user;' . $user]);
 }

 /**
  * Add the HashTwo header to the response
  *
  * @param EventInterface $event The current event
  */
 public function addHeader(EventInterface $event)
 {
     $request = $event->getRequest();
     $response = $event->getResponse();
     $publicKey = $request->getPublicKey();
     $imageIdentifier = $response->getModel()->getImageIdentifier();
     $response->headers->set($this->header, array('imbo;image;' . $publicKey . ';' . $imageIdentifier, 'imbo;user;' . $publicKey));
 }

 /**
  * {@inheritdoc}
  */
 public function enforceMaxSize(EventInterface $event)
 {
     $image = $event->getRequest()->getImage();
     $width = $image->getWidth();
     $height = $image->getHeight();
     if ($this->width && $width > $this->width || $this->height && $height > $this->height) {
         $event->getManager()->trigger('image.transformation.maxsize', array('image' => $image, 'params' => array('width' => $this->width, 'height' => $this->height)));
     }
 }

 /**
  * Handle other requests
  *
  * @param EventInterface $event The event instance
  */
 public function queueRequest(EventInterface $event)
 {
     $request = $event->getRequest();
     $eventName = $event->getName();
     $urls = (array) $this->params[$eventName];
     $data = ['event' => $eventName, 'url' => $request->getRawUri(), 'imageIdentifier' => $request->getImageIdentifier(), 'publicKey' => $request->getPublicKey()];
     foreach ($urls as $url) {
         $this->requestQueue[] = $this->getHttpClient()->post($url, null, $data);
     }
 }

 /**
  * Handle POST requests
  *
  * @param EventInterface
  */
 public function addImage(EventInterface $event)
 {
     $event->getManager()->trigger('db.image.insert');
     $event->getManager()->trigger('storage.image.insert');
     $request = $event->getRequest();
     $response = $event->getResponse();
     $image = $request->getImage();
     $model = new Model\ArrayModel();
     $model->setData(['imageIdentifier' => $image->getImageIdentifier(), 'width' => $image->getWidth(), 'height' => $image->getHeight(), 'extension' => $image->getExtension()]);
     $response->setModel($model);
 }

 /**
  * {@inheritdoc}
  */
 public function checkAccess(EventInterface $event)
 {
     $request = $event->getRequest();
     $ip = $request->getClientIp();
     if ($this->isIPv6($ip)) {
         $ip = $this->expandIPv6($ip);
     }
     $access = $this->isAllowed($ip);
     if (!$access) {
         throw new RuntimeException('Access denied', 403);
     }
 }