Chris@0: <?php
Chris@0: 
Chris@0: /*
Chris@0:  * This file is part of the Symfony package.
Chris@0:  *
Chris@0:  * (c) Fabien Potencier <fabien@symfony.com>
Chris@0:  *
Chris@0:  * For the full copyright and license information, please view the LICENSE
Chris@0:  * file that was distributed with this source code.
Chris@0:  */
Chris@0: 
Chris@0: namespace Symfony\Component\Process;
Chris@0: 
Chris@0: /**
Chris@0:  * Generic executable finder.
Chris@0:  *
Chris@0:  * @author Fabien Potencier <fabien@symfony.com>
Chris@0:  * @author Johannes M. Schmitt <schmittjoh@gmail.com>
Chris@0:  */
Chris@0: class ExecutableFinder
Chris@0: {
Chris@17:     private $suffixes = ['.exe', '.bat', '.cmd', '.com'];
Chris@0: 
Chris@0:     /**
Chris@0:      * Replaces default suffixes of executable.
Chris@0:      */
Chris@0:     public function setSuffixes(array $suffixes)
Chris@0:     {
Chris@0:         $this->suffixes = $suffixes;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Adds new possible suffix to check for executable.
Chris@0:      *
Chris@0:      * @param string $suffix
Chris@0:      */
Chris@0:     public function addSuffix($suffix)
Chris@0:     {
Chris@0:         $this->suffixes[] = $suffix;
Chris@0:     }
Chris@0: 
Chris@0:     /**
Chris@0:      * Finds an executable by name.
Chris@0:      *
Chris@17:      * @param string      $name      The executable name (without the extension)
Chris@17:      * @param string|null $default   The default to return if no executable is found
Chris@17:      * @param array       $extraDirs Additional dirs to check into
Chris@0:      *
Chris@17:      * @return string|null The executable path or default value
Chris@0:      */
Chris@17:     public function find($name, $default = null, array $extraDirs = [])
Chris@0:     {
Chris@0:         if (ini_get('open_basedir')) {
Chris@18:             $searchPath = array_merge(explode(PATH_SEPARATOR, ini_get('open_basedir')), $extraDirs);
Chris@17:             $dirs = [];
Chris@0:             foreach ($searchPath as $path) {
Chris@0:                 // Silencing against https://bugs.php.net/69240
Chris@0:                 if (@is_dir($path)) {
Chris@0:                     $dirs[] = $path;
Chris@0:                 } else {
Chris@0:                     if (basename($path) == $name && @is_executable($path)) {
Chris@0:                         return $path;
Chris@0:                     }
Chris@0:                 }
Chris@0:             }
Chris@0:         } else {
Chris@0:             $dirs = array_merge(
Chris@0:                 explode(PATH_SEPARATOR, getenv('PATH') ?: getenv('Path')),
Chris@0:                 $extraDirs
Chris@0:             );
Chris@0:         }
Chris@0: 
Chris@17:         $suffixes = [''];
Chris@17:         if ('\\' === \DIRECTORY_SEPARATOR) {
Chris@0:             $pathExt = getenv('PATHEXT');
Chris@16:             $suffixes = array_merge($pathExt ? explode(PATH_SEPARATOR, $pathExt) : $this->suffixes, $suffixes);
Chris@0:         }
Chris@0:         foreach ($suffixes as $suffix) {
Chris@0:             foreach ($dirs as $dir) {
Chris@17:                 if (@is_file($file = $dir.\DIRECTORY_SEPARATOR.$name.$suffix) && ('\\' === \DIRECTORY_SEPARATOR || @is_executable($file))) {
Chris@0:                     return $file;
Chris@0:                 }
Chris@0:             }
Chris@0:         }
Chris@0: 
Chris@0:         return $default;
Chris@0:     }
Chris@0: }