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<?php
require_once "../lib/db.php";
const PRIVILEGE_ADMIN = 1 << 30;
const PRIVILEGE_USER = 1 << 0;
$username = $_COOKIE['username'];
$password = $_COOKIE['password'];
$user_id = null;
$user_privileges = 0;
function login($username, $password) {
global $cursor, $user_id, $user_privileges;
if (!$username) return false;
if (!$password) return false;
$statement = $cursor->prepare("select id, hash, privileges from user where user.name = ?");
$statement->bind_param("s", $username);
if (!$statement->execute()) return false;
$res = $statement->get_result();
if (!mysqli_num_rows($res)) return false;
$obj = $res->fetch_object();
$user_id = $obj->id;
$user_privileges = $obj->privileges;
// if (!password_verify($password, $obj->hash)) return false;
return true;
}
function check_login($username, $password) {
if (!login($username, $password)) {
setcookie("username", "", -1, "/");
setcookie("password", "", -1, "/");
return false;
}
return true;
}
function get_cart_count() {
global $username, $cursor;
$statement = $cursor->prepare("select sum(cart.count) as count from cart join user on user.id = cart.user join product on product.id = cart.product where user.name = ?");
$statement->bind_param("s", $username);
if (!$statement->execute()) return 0;
$res = $statement->get_result();
if (!mysqli_num_rows($res)) return 0;
$obj = $res->fetch_object();
return $obj->count;
}
$logged_in = check_login($username, $password);
$cart_count = get_cart_count();
// hansel and gretel crumbs
function leave_crumb() {
$prev = $_SERVER['HTTP_REFERER'];
$ONE_HOUR = time() + (60 * 60);
setcookie("prev", $prev, $ONE_HOUR, "/");
}
function if_logged_in($is, $redirect, $back = false) {
global $logged_in;
if ($logged_in != $is) return;
if ($back) leave_crumb();
http_response_code(302);
header("Location: ".$redirect);
die();
}
function if_privileged($level, $redirect, $back = false) {
global $user_privileges;
if (($user_privileges & $level) > 0) return;
if ($back) leave_crumb();
http_response_code(302);
header("Location: ".$redirect);
die();
}
function cookie_redir($username, $password, $url = "") {
$ONE_YEAR = time() + (60 * 60 * 24 * 365);
setcookie("username", $username, $ONE_YEAR, "/");
setcookie("password", $password, $ONE_YEAR, "/"); // TODO: use tokens to login
if (!$url) {
$prev = $_COOKIE['prev'];
if(!$prev) $url = "/";
else $url = $prev;
}
header("Location: ".$url);
die();
}
?>
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