vesta/web/login/index.php

<?php

define('NO_AUTH_REQUIRED',true);


// Main include
include($_SERVER['DOCUMENT_ROOT']."/inc/main.php");


$TAB = 'LOGIN';

// Logout
if (isset($_GET['logout'])) {
    session_destroy();
}

// Login as someone else
if (isset($_SESSION['user'])) {
    if ($_SESSION['user'] == 'admin' && !empty($_GET['loginas'])) {
        exec (VESTA_CMD . "v-list-user ".escapeshellarg($_GET['loginas'])." json", $output, $return_var);
        if ( $return_var == 0 ) {
            $data = json_decode(implode('', $output), true);
            reset($data);
            $_SESSION['look'] = key($data);
            $_SESSION['look_alert'] = 'yes';
        }
    }
    header("Location: /");
    exit;
}

// Basic auth
if (isset($_POST['user']) && isset($_POST['password'])) {
    if(isset($_SESSION['token']) && isset($_POST['token']) && $_POST['token'] == $_SESSION['token']) {
        $v_user = escapeshellarg($_POST['user']);
        $v_ip = escapeshellarg($_SERVER['REMOTE_ADDR']);

        // Get user's salt
        $output = '';
        exec (VESTA_CMD."v-get-user-salt ".$v_user." ".$v_ip." json" , $output, $return_var);
        $pam = json_decode(implode('', $output), true);
        if ( $return_var > 0 ) {
            $ERROR = "<a class=\"error\">".__('Invalid username or password')."</a>";
        } else {
            $user = $_POST['user'];
            $password = $_POST['password'];
            $salt = $pam[$user]['SALT'];
            $method = $pam[$user]['METHOD'];

            if ($method == 'md5' ) {
                $hash = crypt($password, '$1$'.$salt.'$');
            }
            if ($method == 'sha-512' ) {
                $hash = crypt($password, '$6$rounds=5000$'.$salt.'$');
                $hash = str_replace('$rounds=5000','',$hash);
            }
            if ($method == 'des' ) {
                $hash = crypt($password, $salt);
            }

            // Send hash via tmp file
            $v_hash = exec('mktemp -p /tmp');
            $fp = fopen($v_hash, "w");
            fwrite($fp, $hash."\n");
            fclose($fp);

            // Check user hash
            exec(VESTA_CMD ."v-check-user-hash ".$v_user." ".$v_hash." ".$v_ip,  $output, $return_var);
            unset($output);

            // Remove tmp file
            unlink($v_hash);

            // Check API answer
            if ( $return_var > 0 ) {
                $ERROR = "<a class=\"error\">".__('Invalid username or password')."</a>";
            } else {

                // Make root admin user
                if ($_POST['user'] == 'root') $v_user = 'admin';

                // Get user speciefic parameters
                exec (VESTA_CMD . "v-list-user ".$v_user." json", $output, $return_var);
                $data = json_decode(implode('', $output), true);

                // Define session user
                $_SESSION['user'] = key($data);
                $v_user = $_SESSION['user'];

                // Get user favorites
                get_favourites();

                // Define language
                $output = '';
                exec (VESTA_CMD."v-list-sys-languages json", $output, $return_var);
                $languages = json_decode(implode('', $output), true);
                if (in_array($data[$v_user]['LANGUAGE'], $languages)){
                    $_SESSION['language'] = $data[$v_user]['LANGUAGE'];
                } else {
                    $_SESSION['language'] = 'en';
                }

                // Regenerate session id to prevent session fixation
                session_regenerate_id();

                // Redirect request to control panel interface
                if (!empty($_SESSION['request_uri'])) {
                    header("Location: ".$_SESSION['request_uri']);
                    unset($_SESSION['request_uri']);
                    exit;
                } else {
                    header("Location: /");
                    exit;
                }
            }
        }
    } else {
        $ERROR = "<a class=\"error\">".__('Invalid or missing token')."</a>";
    }
}

// Check system configuration
exec (VESTA_CMD . "v-list-sys-config json", $output, $return_var);
$data = json_decode(implode('', $output), true);
$sys_arr = $data['config'];
foreach ($sys_arr as $key => $value) {
    $_SESSION[$key] = $value;
}

// Detect language
if (empty($_SESSION['language'])) {
    $output = '';
    exec (VESTA_CMD."v-list-sys-config json", $output, $return_var);
    $config = json_decode(implode('', $output), true);
    $lang = $config['config']['LANGUAGE'];

    $output = '';
    exec (VESTA_CMD."v-list-sys-languages json", $output, $return_var);
    $languages = json_decode(implode('', $output), true);
    if(in_array($lang, $languages)){
        $_SESSION['language'] = $lang;
    }
    else {
        $_SESSION['language'] = 'en';
    }
}

// Generate CSRF token
$_SESSION['token'] = md5(uniqid(mt_rand(), true));

require_once($_SERVER['DOCUMENT_ROOT'].'/inc/i18n/'.$_SESSION['language'].'.php');
require_once('../templates/header.html');
require_once('../templates/login.html');