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<?php |
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namespace AssetManager\Core\Resolver; |
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use ArrayAccess; |
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use Assetic\Asset\FileAsset; |
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use Assetic\Factory\Resource\DirectoryResource; |
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use AssetManager\Core\Exception; |
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use AssetManager\Core\Service\MimeResolver; |
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use SplFileInfo; |
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use Traversable; |
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use Zend\Stdlib\PriorityQueue; |
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use Zend\Stdlib\SplStack; |
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/** |
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* This resolver allows you to resolve from a multitude of prioritized paths. |
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*/ |
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class PrioritizedPathsResolver extends FileResolverAbstract |
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{ |
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/** |
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* @var PriorityQueue|ResolverInterface[] |
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*/ |
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protected $paths; |
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/** |
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* Flag indicating whether or not LFI protection for rendering view scripts is enabled |
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* |
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* @var bool |
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*/ |
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protected $lfiProtectionOn = true; |
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/** |
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* Constructor. |
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* Construct object and set a new PriorityQueue. |
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*/ |
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public function __construct() |
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{ |
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$this->paths = new PriorityQueue(); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function addPath($path) |
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{ |
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if (is_string($path)) { |
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$this->paths->insert($this->normalizePath($path), 1); |
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return; |
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} |
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if (!is_array($path) && !$path instanceof ArrayAccess) { |
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throw new Exception\InvalidArgumentException(sprintf( |
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'Provided path must be an array or an instance of ArrayAccess, %s given', |
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is_object($path) ? get_class($path) : gettype($path) |
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)); |
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} |
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if (isset($path['priority']) && isset($path['path'])) { |
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$this->paths->insert($this->normalizePath($path['path']), $path['priority']); |
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return; |
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} |
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throw new Exception\InvalidArgumentException('Provided array must contain both keys "priority" and "path"'); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getPaths() |
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{ |
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return $this->paths; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function clearPaths() |
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{ |
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$this->paths = new PriorityQueue(); |
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} |
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/** |
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* Add many paths to the stack at once |
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* |
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* @param array|Traversable $paths |
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* |
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* @return void |
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*/ |
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public function addPaths($paths) |
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{ |
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foreach ($paths as $path) { |
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$this->addPath($path); |
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} |
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} |
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/** |
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* Rest the path stack to the paths provided |
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* |
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* @param Traversable|array $paths |
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* |
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* @throws Exception\InvalidArgumentException |
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*/ |
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public function setPaths($paths) |
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{ |
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if (!is_array($paths) && !$paths instanceof Traversable) { |
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throw new Exception\InvalidArgumentException(sprintf( |
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'Invalid argument provided for $paths, expecting either an array or Traversable object, "%s" given', |
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is_object($paths) ? get_class($paths) : gettype($paths) |
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)); |
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} |
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$this->clearPaths(); |
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$this->addPaths($paths); |
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} |
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/** |
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* Normalize a path for insertion in the stack |
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* |
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* @param string $path |
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* |
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* @return string |
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*/ |
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protected function normalizePath($path) |
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{ |
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$path = rtrim($path, '/\\'); |
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$path .= DIRECTORY_SEPARATOR; |
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return $path; |
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} |
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/** |
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* Set LFI protection flag |
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* |
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* @param bool $flag |
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* @return void |
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*/ |
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public function setLfiProtection($flag) |
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{ |
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$this->lfiProtectionOn = (bool) $flag; |
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} |
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/** |
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* Return status of LFI protection flag |
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* |
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* @return bool |
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*/ |
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public function isLfiProtectionOn() |
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{ |
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return $this->lfiProtectionOn; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function resolve($name) |
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{ |
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if ($this->isLfiProtectionOn() && preg_match('#\.\.[\\\/]#', $name)) { |
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return null; |
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} |
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foreach ($this->getPaths() as $path) { |
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$asset = $this->resolveFile($path . $name); |
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if (!$asset) { |
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continue; |
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} |
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$asset->mimetype = $this->getMimeResolver()->getMimeType($name); |
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return $asset; |
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} |
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return null; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function collect() |
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{ |
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$collection = array(); |
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foreach ($this->getPaths() as $path) { |
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$locations = new SplStack(); |
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$pathInfo = new SplFileInfo($path); |
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$locations->push($pathInfo); |
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$basePath = $this->normalizePath($pathInfo->getRealPath()); |
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while (!$locations->isEmpty()) { |
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/** @var SplFileInfo $pathInfo */ |
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$pathInfo = $locations->pop(); |
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if (!$pathInfo->isReadable()) { |
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throw new Exception\RuntimeException(sprintf('%s is not readable.', $pathInfo->getPath())); |
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} |
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if ($pathInfo->isDir()) { |
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foreach (new DirectoryResource($pathInfo->getRealPath()) as $resource) { |
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$locations->push(new SplFileInfo($resource)); |
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} |
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} else { |
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$collection[] = substr($pathInfo->getRealPath(), strlen($basePath)); |
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} |
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} |
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} |
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return array_unique($collection); |
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} |
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} |
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This check looks for function or method calls that always return null and whose return value is assigned to a variable.
The method
getObject()
can return nothing but null, so it makes no sense to assign that value to a variable.The reason is most likely that a function or method is imcomplete or has been reduced for debug purposes.