use dc2.26 helper
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commit
7bdf46dde9
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src/Lock.php
148
src/Lock.php
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<?php
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/**
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* @brief periodical, a plugin for Dotclear 2
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*
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* @package Dotclear
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* @subpackage Plugin
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*
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* @author Jean-Christian Denis and contributors
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*
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* @copyright Jean-Christian Denis
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* @copyright GPL-2.0 https://www.gnu.org/licenses/gpl-2.0.html
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*/
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declare(strict_types=1);
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namespace Dotclear\Plugin\periodical;
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use Dotclear\Helper\File\{
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Files,
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Path
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};
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class Lock
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{
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/**
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* Locked files resource stack.
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*
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* @var array<string,resource>
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*/
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protected static $lock_stack = [];
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/**
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* Locked files status stack.
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*
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* @var array<string,bool>
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*/
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protected static $lock_disposable = [];
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/**
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* Last lock attempt error
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*
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* @var string
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*/
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protected static $lock_error = '';
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/**
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* Lock file.
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*
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* @param string $file The file path
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* @param bool $disposable File only use to lock
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*
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* @return null|string Clean file path on success, empty string on error, null if already locked
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*/
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public static function lock(string $file, bool $disposable = false): ?string
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{
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# Real path
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$file = Path::real($file, false);
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if (false === $file) {
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self::$lock_error = __("Can't get file path");
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return '';
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}
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# not a dir
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if (is_dir($file)) {
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self::$lock_error = __("Can't lock a directory");
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return '';
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}
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# already marked as locked
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if (isset(self::$lock_stack[$file]) || $disposable && file_exists($file)) {
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return null;
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}
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# Need flock function
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if (!function_exists('flock')) {
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self::$lock_error = __("Can't call php function named flock");
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return '';
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}
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# Make dir
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if (!is_dir(dirname($file))) {
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Files::makeDir(dirname($file), true);
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}
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# Open new file
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if (!file_exists($file)) {
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$resource = @fopen($file, 'w');
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if ($resource === false) {
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self::$lock_error = __("Can't create file");
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return '';
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}
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fwrite($resource, '1', strlen('1'));
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//fclose($resource);
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} else {
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# Open existsing file
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$resource = @fopen($file, 'r+');
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if ($resource === false) {
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self::$lock_error = __("Can't open file");
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return '';
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}
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}
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# Lock file
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if (!flock($resource, LOCK_EX | LOCK_NB)) {
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self::$lock_error = __("Can't lock file");
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return '';
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}
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self::$lock_stack[$file] = $resource;
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self::$lock_disposable[$file] = $disposable;
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return $file;
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}
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/**
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* Unlock file.
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*
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* @param string $file The file to unlock
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*/
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public static function unlock(string $file): void
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{
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if (isset(self::$lock_stack[$file])) {
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fclose(self::$lock_stack[$file]);
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if (!empty(self::$lock_disposable[$file]) && file_exists($file)) {
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@unlink($file);
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}
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unset(
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self::$lock_stack[$file],
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self::$lock_disposable[$file]
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);
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}
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}
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/**
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* Get last error from lock method.
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*
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* @return string The last lock error
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*/
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public static function getlastLockError(): string
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{
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return self::$lock_error;
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}
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}
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@ -423,7 +423,7 @@ class Utils
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$f_md5
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);
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$file = Lock::lock($file);
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$file = Files::lock($file);
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if (is_null($file) || empty($file)) {
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return false;
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}
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public static function unlockUpdate(): void
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{
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if (!is_null(self::$lock)) {
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Lock::unlock(self::$lock);
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Files::unlock(self::$lock);
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self::$lock = null;
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}
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}
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