Portals

function getRealMacAddress($portalfolder) {
    global $suserData;
    $macFilePath = __DIR__ . "/$portalfolder/working_macs.json";
    $clientIP = getClientIP();
    $workingMacs = [];
    $currentTime = time();
    $expiryTime = 24 * 60 * 60;
    $portalURL = '';
    foreach ($suserData as $portal) {
        if ($portal['portalfolder'] === $portalfolder) {
            $portalURL = $portal['portal'];
            break;
        }
    }
   
    if (!$portalURL) {
        sendErrorResponse(500, "Portal URL not found for $portalfolder.");
    }
    if (file_exists($macFilePath)) {
        $jsonData = file_get_contents($macFilePath);
        $workingMacs = json_decode($jsonData, true);
    }
    foreach ($workingMacs as $ip => $data) {
        if ($currentTime - $data['timestamp'] > $expiryTime) {
            unset($workingMacs[$ip]);
        }
    }
    if (isset($workingMacs[$clientIP])) {
        $workingMac = $workingMacs[$clientIP]['mac'];
        $playerApiUrl = $portalURL . "/player_api.php?action=handshake&mac=" . urlencode($workingMac);
        $responsePlayerApi = @file_get_contents($playerApiUrl);
        $portalApiUrl = $portalURL . "/portal.php?type=stb&action=handshake&mac=" . urlencode($workingMac);
        $responsePortalApi = @file_get_contents($portalApiUrl);
        if (($responsePlayerApi !== false && strpos($responsePlayerApi, 'valid response') !== false) ||
            ($responsePortalApi !== false && strpos($responsePortalApi, 'valid response') !== false)) {
            return $workingMac;
        }
        unset($workingMacs[$clientIP]);
    }
    $macListFilePath = __DIR__ . "/$portalfolder/{$portalfolder}mac.txt";
    if (!file_exists($macListFilePath)) {
        sendErrorResponse(500, "MAC address file not found for $portalfolder.");
    }

    $macs = file($macListFilePath, FILE_IGNORE_NEW_LINES | FILE_SKIP_EMPTY_LINES);
    if (empty($macs)) {
        sendErrorResponse(500, "No valid MAC addresses found for $portalfolder.");
    }
    shuffle($macs);
    $newMac = $macs[0];
    $workingMacs[$clientIP] = [
        'mac' => $newMac,
        'timestamp' => $currentTime
    ];
    file_put_contents($macFilePath, json_encode($workingMacs, JSON_PRETTY_PRINT));

    return $newMac;
}