Same name and namespace in other branches

1. 10 core/modules/image/image.module \image_file_download()
2. 9 core/modules/image/image.module \image_file_download()
3. 8.9.x core/modules/image/image.module \image_file_download()

Implements hook_file_download().

Control the access to files underneath the styles directory.

File

modules/image/image.module, line 280

Code

function image_file_download ($uri) {
 $path = file_uri_target ($uri);
 // Private file access for image style derivatives.
 if (strpos ($path, 'styles/') === 0) {
 $args = explode ('/', $path);
 // Discard the first part of the path (styles).
 array_shift ($args);
 // Get the style name from the second part.
 $style_name = array_shift ($args);
 // Remove the scheme from the path.
 array_shift ($args);
 // Then the remaining parts are the path to the image.
 $original_uri = file_uri_scheme ($uri) . '://' . implode ('/', $args);
 // Check that the file exists and is an image.
 if ($info = image_get_info ($uri)) {
 // Check the permissions of the original to grant access to this image.
 $headers = module_invoke_all ('file_download', $original_uri);
 // Confirm there's at least one module granting access and none denying access.
 if (!empty($headers) && !in_array (-1, $headers)) {
 return array(
 // Send headers describing the image's size, and MIME-type...
'Content-Type' => $info['mime_type'],
 'Content-Length' => $info['file_size'],
 );
 }
 }
 return -1;
 }
 // Private file access for the original files. Note that we only check access
 // for non-temporary images, since file.module will grant access for all
 // temporary files.
 $files = file_load_multiple (array(), array(
 'uri' => $uri,
 ));
 if (count ($files)) {
 $file = reset ($files);
 if ($file->status) {
 return file_file_download ($uri, 'image');
 }
 }
}

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