function SystemDceSecurityProvider::getWindowsGid

Returns a group identifier for a user on a Windows system

Since Windows does not have the same concept as an effective POSIX GID for the running script, we will get the local group memberships for the user running the script. Then, we will get the SID (security identifier) for the first group that appears in that list. Finally, we will return the RID (relative identifier) for the group and use that as the GID.

@link https://www.windows-commandline.com/list-of-user-groups-command-line/ List of user groups command line

File

vendor/ramsey/uuid/src/Provider/Dce/SystemDceSecurityProvider.php, line 197

Class

SystemDceSecurityProvider

SystemDceSecurityProvider retrieves the user or group identifiers from the system

Namespace

Ramsey\Uuid\Provider\Dce

Code

private function getWindowsGid() : string {
    $response = shell_exec('net user %username% | findstr /b /i "Local Group Memberships"');
    if ($response === null) {
        return '';
    }
    
    /** @var string[] $userGroups */
    $userGroups = preg_split('/\\s{2,}/', (string) $response, -1, PREG_SPLIT_NO_EMPTY);
    $firstGroup = trim($userGroups[1] ?? '', "* \t\n\r\x00\v");
    if ($firstGroup === '') {
        return '';
    }
    $response = shell_exec('wmic group get name,sid | findstr /b /i ' . escapeshellarg($firstGroup));
    if ($response === null) {
        return '';
    }
    
    /** @var string[] $userGroup */
    $userGroup = preg_split('/\\s{2,}/', (string) $response, -1, PREG_SPLIT_NO_EMPTY);
    $sid = $userGroup[1] ?? '';
    if (($lastHyphen = strrpos($sid, '-')) === false) {
        return '';
    }
    return trim(substr($sid, $lastHyphen + 1));
}