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Bui Sy Nguyen
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,255 @@ | ||
| <?php | ||
| /////////////////////////////////////////////////////////////////////////////// | ||
| // | ||
| // © Copyright f-project.net 2010-present. | ||
| // | ||
| // Licensed under the Apache License, Version 2.0 (the "License"); | ||
| // you may not use this file except in compliance with the License. | ||
| // You may obtain a copy of the License at | ||
| // | ||
| // http://www.apache.org/licenses/LICENSE-2.0 | ||
| // | ||
| // Unless required by applicable law or agreed to in writing, software | ||
| // distributed under the License is distributed on an "AS IS" BASIS, | ||
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | ||
| // See the License for the specific language governing permissions and | ||
| // limitations under the License. | ||
| // | ||
| /////////////////////////////////////////////////////////////////////////////// | ||
|
|
||
| namespace fproject\amf\loader; | ||
| use fproject\amf\AmfException; | ||
|
|
||
| /** | ||
| * Static methods for loading classes and files. | ||
| * | ||
| */ | ||
| class Loader | ||
| { | ||
| /** | ||
| * Loads a class from a PHP file. The filename must be formatted | ||
| * as "$class.php". | ||
| * | ||
| * If $dirs is a string or an array, it will search the directories | ||
| * in the order supplied, and attempt to load the first matching file. | ||
| * | ||
| * If $dirs is null, it will split the class name at underscores to | ||
| * generate a path hierarchy (e.g., "Zend_Example_Class" will map | ||
| * to "Zend/Example/Class.php"). | ||
| * | ||
| * If the file was not found in the $dirs, or if no $dirs were specified, | ||
| * it will attempt to load it from PHP's include_path. | ||
| * | ||
| * @param string $class - The full class name of a Zend component. | ||
| * @param string|array $dirs - OPTIONAL Either a path or an array of paths | ||
| * to search. | ||
| * @return void | ||
| * @throws AmfException | ||
| */ | ||
| public static function loadClass($class, $dirs = null) | ||
| { | ||
| if (class_exists($class, false) || interface_exists($class, false)) { | ||
| return; | ||
| } | ||
|
|
||
| if ((null !== $dirs) && !is_string($dirs) && !is_array($dirs)) { | ||
| throw new AmfException('Directory argument must be a string or an array'); | ||
| } | ||
|
|
||
| $file = self::standardiseFile($class); | ||
|
|
||
| if (!empty($dirs)) { | ||
| // use the autodiscovered path | ||
| $dirPath = dirname($file); | ||
| if (is_string($dirs)) { | ||
| $dirs = explode(PATH_SEPARATOR, $dirs); | ||
| } | ||
| foreach ($dirs as $key => $dir) { | ||
| if ($dir == '.') { | ||
| $dirs[$key] = $dirPath; | ||
| } else { | ||
| $dir = rtrim($dir, '\\/'); | ||
| $dirs[$key] = $dir . DIRECTORY_SEPARATOR . $dirPath; | ||
| } | ||
| } | ||
| $file = basename($file); | ||
| self::loadFile($file, $dirs, true); | ||
| } else { | ||
| self::loadFile($file, null, true); | ||
| } | ||
|
|
||
| if (!class_exists($class, false) && !interface_exists($class, false)) { | ||
| throw new AmfException("File \"$file\" does not exist or class \"$class\" was not found in the file"); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Loads a PHP file. This is a wrapper for PHP's include() function. | ||
| * | ||
| * $filename must be the complete filename, including any | ||
| * extension such as ".php". Note that a security check is performed that | ||
| * does not permit extended characters in the filename. This method is | ||
| * intended for loading Zend Framework files. | ||
| * | ||
| * If $dirs is a string or an array, it will search the directories | ||
| * in the order supplied, and attempt to load the first matching file. | ||
| * | ||
| * If the file was not found in the $dirs, or if no $dirs were specified, | ||
| * it will attempt to load it from PHP's include_path. | ||
| * | ||
| * If $once is TRUE, it will use include_once() instead of include(). | ||
| * | ||
| * @param string $filename | ||
| * @param string|array $dirs - OPTIONAL either a path or array of paths | ||
| * to search. | ||
| * @param boolean $once | ||
| * @return boolean | ||
| * @throws AmfException | ||
| */ | ||
| public static function loadFile($filename, $dirs = null, $once = false) | ||
| { | ||
| self::_securityCheck($filename); | ||
|
|
||
| /** | ||
| * Search in provided directories, as well as include_path | ||
| */ | ||
| $incPath = false; | ||
| if (!empty($dirs) && (is_array($dirs) || is_string($dirs))) { | ||
| if (is_array($dirs)) { | ||
| $dirs = implode(PATH_SEPARATOR, $dirs); | ||
| } | ||
| $incPath = get_include_path(); | ||
| set_include_path($dirs . PATH_SEPARATOR . $incPath); | ||
| } | ||
|
|
||
| /** | ||
| * Try finding for the plain filename in the include_path. | ||
| */ | ||
| if ($once) { | ||
| include_once $filename; | ||
| } else { | ||
| include $filename; | ||
| } | ||
|
|
||
| /** | ||
| * If searching in directories, reset include_path | ||
| */ | ||
| if ($incPath) { | ||
| set_include_path($incPath); | ||
| } | ||
|
|
||
| return true; | ||
| } | ||
|
|
||
| /** | ||
| * Returns TRUE if the $filename is readable, or FALSE otherwise. | ||
| * This function uses the PHP include_path, where PHP's is_readable() | ||
| * does not. | ||
| * | ||
| * Note from ZF-2900: | ||
| * If you use custom error handler, please check whether return value | ||
| * from error_reporting() is zero or not. | ||
| * At mark of fopen() can not suppress warning if the handler is used. | ||
| * | ||
| * @param string $filename | ||
| * @return boolean | ||
| */ | ||
| public static function isReadable($filename) | ||
| { | ||
| if (is_readable($filename)) { | ||
| // Return early if the filename is readable without needing the | ||
| // include_path | ||
| return true; | ||
| } | ||
|
|
||
| if (strtoupper(substr(PHP_OS, 0, 3)) == 'WIN' | ||
| && preg_match('/^[a-z]:/i', $filename) | ||
| ) { | ||
| // If on windows, and path provided is clearly an absolute path, | ||
| // return false immediately | ||
| return false; | ||
| } | ||
|
|
||
| foreach (self::explodeIncludePath() as $path) { | ||
| if ($path == '.') { | ||
| if (is_readable($filename)) { | ||
| return true; | ||
| } | ||
| continue; | ||
| } | ||
| $file = $path . '/' . $filename; | ||
| if (is_readable($file)) { | ||
| return true; | ||
| } | ||
| } | ||
| return false; | ||
| } | ||
|
|
||
| /** | ||
| * Explode an include path into an array | ||
| * | ||
| * If no path provided, uses current include_path. Works around issues that | ||
| * occur when the path includes stream schemas. | ||
| * | ||
| * @param string|null $path | ||
| * @return array | ||
| */ | ||
| public static function explodeIncludePath($path = null) | ||
| { | ||
| if (null === $path) { | ||
| $path = get_include_path(); | ||
| } | ||
|
|
||
| if (PATH_SEPARATOR == ':') { | ||
| // On *nix systems, include_paths which include paths with a stream | ||
| // schema cannot be safely explode'd, so we have to be a bit more | ||
| // intelligent in the approach. | ||
| $paths = preg_split('#:(?!//)#', $path); | ||
| } else { | ||
| $paths = explode(PATH_SEPARATOR, $path); | ||
| } | ||
| return $paths; | ||
| } | ||
|
|
||
| /** | ||
| * Ensure that filename does not contain exploits | ||
| * | ||
| * @param string $filename | ||
| * @return void | ||
| * @throws AmfException | ||
| */ | ||
| protected static function _securityCheck($filename) | ||
| { | ||
| /** | ||
| * Security check | ||
| */ | ||
| if (preg_match('/[^a-z0-9\\/\\\\_.:-]/i', $filename)) { | ||
| throw new AmfException('Security check: Illegal character in filename'); | ||
| } | ||
| } | ||
|
|
||
| /** | ||
| * Standardise the filename. | ||
| * | ||
| * Convert the supplied filename into the namespace-aware standard, | ||
| * based on the Framework Interop Group reference implementation: | ||
| * http://groups.google.com/group/php-standards/web/psr-0-final-proposal | ||
| * | ||
| * The filename must be formatted as "$file.php". | ||
| * | ||
| * @param string $file - The file name to be loaded. | ||
| * @return string | ||
| */ | ||
| public static function standardiseFile($file) | ||
| { | ||
| $fileName = ltrim($file, '\\'); | ||
| $file = ''; | ||
| if ($lastNsPos = strripos($fileName, '\\')) { | ||
| $namespace = substr($fileName, 0, $lastNsPos); | ||
| $fileName = substr($fileName, $lastNsPos + 1); | ||
| $file = str_replace('\\', DIRECTORY_SEPARATOR, $namespace) . DIRECTORY_SEPARATOR; | ||
| } | ||
| $file .= str_replace('_', DIRECTORY_SEPARATOR, $fileName) . '.php'; | ||
| return $file; | ||
| } | ||
| } |
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