public function ImageStyle::getPathToken in Drupal 8

Same name and namespace in other branches

9 core/modules/image/src/Entity/ImageStyle.php \Drupal\image\Entity\ImageStyle::getPathToken()

Generates a token to protect an image style derivative.

This prevents unauthorized generation of an image style derivative, which can be costly both in CPU time and disk space.

Parameters

string $uri: The URI of the original image of this style.

Return value

string An eight-character token which can be used to protect image style derivatives against denial-of-service attacks.

Overrides ImageStyleInterface::getPathToken

1 call to ImageStyle::getPathToken()

ImageStyle::buildUrl in core/modules/image/src/Entity/ImageStyle.php: Returns the URL of this image derivative for an original image path or URI.

File

core/modules/image/src/Entity/ImageStyle.php, line 359

Class

ImageStyle: Defines an image style configuration entity.

Namespace

Drupal\image\Entity

Code

public function getPathToken($uri) {

  // Return the first 8 characters.
  return substr(Crypt::hmacBase64($this
    ->id() . ':' . $this
    ->addExtension($uri), $this
    ->getPrivateKey() . $this
    ->getHashSalt()), 0, 8);
}

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