S2OJ/web/app/models/Auth.php

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<?php
class Auth {
public static function check() {
global $myUser;
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return $myUser !== null;
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}
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public static function id() {
global $myUser;
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if ($myUser === null) {
return null;
}
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return $myUser['username'];
}
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public static function user() {
global $myUser;
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return $myUser;
}
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public static function property($name) {
global $myUser;
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if (!$myUser) {
return false;
}
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return $myUser[$name];
}
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public static function login($username) {
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if (!validateUsername($username)) {
return;
}
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$_SESSION['username'] = $username;
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$remember_token = DB::selectSingle([
"select remember_token from user_info",
"where", ["username" => $username]
]);
if ($remember_token == '') {
$remember_token = uojRandString(60);
DB::update([
"update user_info",
"set", ["remember_token" => $remember_token],
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"where", ["username" => $username]
]);
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}
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$_SESSION['last_login'] = time();
$_SESSION['remember_token'] = $remember_token;
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$expire = time() + 60 * 60 * 24 * 7;
Cookie::safeSet('uoj_username', $username, $expire, '/', array('httponly' => true));
Cookie::safeSet('uoj_remember_token', $remember_token, $expire, '/', array('httponly' => true));
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DB::update([
"update user_info",
"set", ["last_login_time" => UOJTime::$time_now_str],
"where", ["username" => $username]
]);
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session_regenerate_id(true);
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}
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public static function logout() {
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session_unset();
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Cookie::unsetVar(session_name(), '/');
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Cookie::safeUnset('uoj_username', '/');
Cookie::safeUnset('uoj_remember_token', '/');
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DB::update([
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"update user_info",
"set", ["remember_token" => ''],
"where", ["username" => Auth::id()]
]);
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}
private static function initMyUser() {
global $myUser;
$myUser = null;
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Cookie::safeCheck('uoj_username', '/');
Cookie::safeCheck('uoj_remember_token', '/');
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if (isset($_SESSION['username'])) {
if (!validateUsername($_SESSION['username'])) {
return;
}
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$myUser = UOJUser::query($_SESSION['username']);
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// 当 remember_token 不同时,注销登录
if ($_SESSION['remember_token'] !== $myUser['remember_token']) {
$myUser = null;
return;
}
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return;
}
$remember_token = Cookie::safeGet('uoj_remember_token', '/');
if ($remember_token != null) {
$username = Cookie::safeGet('uoj_username', '/');
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if (!validateUsername($username)) {
return;
}
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$myUser = UOJUser::query($username);
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if ($myUser['remember_token'] !== $remember_token) {
$myUser = null;
return;
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}
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$_SESSION['username'] = $myUser['username'];
$_SESSION['remember_token'] = $myUser['remember_token'];
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return;
}
}
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public static function init() {
global $myUser;
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Auth::initMyUser();
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if ($myUser && UOJUser::getAccountStatus($myUser) != 'ok') {
$myUser = null;
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}
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if ($myUser) {
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if (!isset($_SESSION['last_login'])) {
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$_SESSION['last_login'] = strtotime($myUser['last_login_time']);
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}
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$myUser = UOJUser::updateVisitHistory($myUser, [
'remote_addr' => UOJContext::remoteAddr(),
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'http_x_forwarded_for' => UOJContext::httpXForwardedFor(),
'http_user_agent' => UOJContext::httpUserAgent()
]);
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$_SESSION['last_visited'] = time();
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}
}
}