<?php
/**
 * Presents the FOG Kernels version that the clients will use.
 *
 * PHP version 5+
 *
 * @category KernelVersion
 * @package  FOGProject
 * @author   Tom Elliott <tommygunsster@gmail.com>
 * @license  http://opensource.org/licenses/gpl-3.0 GPLv3
 * @link     https://fogproject.org
 */

require '../commons/base.inc.php';
session_write_close();
ignore_user_abort(true);
set_time_limit(0);
header('Content-Type: text/plain'); // changed from text/event-stream since output is simple text

if (isset($_POST['url'])) {
    // Prevent an unauthenticated user from making arbitrary requests.
    FOGCore::checkAuthAndCSRF();

    $res = $FOGURLRequests->process(filter_input(INPUT_POST, 'url'));
    foreach ((array) $res as &$response) {
        echo $response;
        unset($response);
    }
    exit;
}

$kernelvers = function ($kernel) {
    $currpath = sprintf(
        '%s%sservice%sipxe%s%s',
        BASEPATH,
        DS,
        DS,
        DS,
        $kernel
    );

    if (!file_exists($currpath)) {
        return 'Not found';
    }

    $basepath = escapeshellarg($currpath);

    // Using 'strings' and grep to extract version number like 1.5.10
    $findstr = sprintf(
        'strings %s | grep -m 1 -oP "\d+\.\d+\.\d+(?=.*\([0-9a-zA-Z]*@)"',
        $basepath
    );

    $output = shell_exec($findstr);

    return $output !== null ? trim($output) : 'Unknown';
};

printf("FOG Version: %s\n", FOG_VERSION);
printf("bzImage Version: %s\n", $kernelvers('bzImage'));
printf("bzImage32 Version: %s\n", $kernelvers('bzImage32'));

$armVersion = $kernelvers('arm_Image');
if ($armVersion === 'Not found' || $armVersion === 'Unknown' || empty($armVersion)) {
    printf("arm_Image Version: Not installed\n");
} else {
    printf("arm_Image Version: %s\n", $armVersion);
}