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<?php
declare(strict_types = 1);
/**
* SPDX-FileCopyrightText: 2022 Nextcloud GmbH and Nextcloud contributors
* SPDX-License-Identifier: AGPL-3.0-or-later
*/
namespace OC;
use OCP\IBinaryFinder;
use OCP\ICache;
use OCP\ICacheFactory;
use OCP\IConfig;
use Symfony\Component\Process\ExecutableFinder;
/**
* Service that find the binary path for a program
*/
class BinaryFinder implements IBinaryFinder {
public const DEFAULT_BINARY_SEARCH_PATHS = [
'/usr/local/sbin',
'/usr/local/bin',
'/usr/sbin',
'/usr/bin',
'/sbin',
'/bin',
'/opt/bin',
];
private ICache $cache;
public function __construct(
ICacheFactory $cacheFactory,
private IConfig $config,
) {
$this->cache = $cacheFactory->createLocal('findBinaryPath');
}
/**
* Try to find a program
*
* @return false|string
*/
public function findBinaryPath(string $program) {
$result = $this->cache->get($program);
if ($result !== null) {
return $result;
}
$result = false;
if (\OCP\Util::isFunctionEnabled('exec')) {
$exeSniffer = new ExecutableFinder();
// Returns null if nothing is found
$result = $exeSniffer->find(
$program,
null,
$this->config->getSystemValue('binary_search_paths', self::DEFAULT_BINARY_SEARCH_PATHS));
if ($result === null) {
$result = false;
}
}
// store the value for 5 minutes
$this->cache->set($program, $result, 300);
return $result;
}
}
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