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<?php
require_once "common.php";
use Jumbojett\OpenIDConnectClient;
$session_name = Config::get(Config::SESSION_NAME);
$session_expire = Config::get(Config::SESSION_LIFETIME);
if (Config::is_server_https())
ini_set("session.cookie_secure", "true");
ini_set("session.name", "epube_sid");
ini_set("session.use_only_cookies", "true");
ini_set("session.gc_maxlifetime", $session_expire);
ini_set("session.cookie_lifetime", "0");
session_set_cookie_params($session_expire);
session_save_path(dirname(__DIR__) . "/sessions");
// prolong PHP session cookie
if (isset($_COOKIE[$session_name]))
setcookie($session_name,
$_COOKIE[$session_name],
time() + $session_expire,
ini_get("session.cookie_path"),
ini_get("session.cookie_domain"),
ini_get("session.cookie_secure"),
ini_get("session.cookie_httponly"));
function validate_session() : bool {
if (!empty($_SESSION["owner"])) {
// verify oidc refresh token once an hour
if (($_SESSION["refresh_token"] ?? false) && $_SESSION["refresh_token_last_check"] < time() - 3600) {
$oidc = new OpenIDConnectClient(Config::get(Config::OIDC_URL),
Config::get(Config::OIDC_CLIENT_ID),
Config::get(Config::OIDC_CLIENT_SECRET));
try {
$data = $oidc->introspectToken($_SESSION["refresh_token"]);
if (!$data->active)
return false;
$_SESSION["refresh_token_last_check"] = time();
} catch (Exception $e) {
return false;
}
}
$user = ORM::for_table('epube_users')
->where('username', $_SESSION['owner'])
->find_one();
if ($user && sha1($user->pass) == $_SESSION['pass_hash']) {
return true;
}
}
return false;
}
function logout_user() : void {
if (session_status() == PHP_SESSION_ACTIVE) {
session_destroy();
if (isset($_COOKIE[session_name()])) {
setcookie(session_name(), '', time()-42000, '/');
}
if (isset($_COOKIE["epube_csrf_token"])) {
setcookie("epube_csrf_token", '', time()-42000, '/');
}
session_commit();
}
}
register_shutdown_function('session_write_close');
if (Config::get(Config::DB_TYPE) == 'pgsql') {
function epube_open(string $savePath, string $sessionName): bool {
return true;
}
function epube_read(string $id): string {
global $session_expire;
$sth = \Db::pdo()->prepare("SELECT data FROM epube_sessions WHERE id=?");
$sth->execute([$id]);
if ($row = $sth->fetch()) {
return base64_decode($row["data"]);
} else {
$expire = time() + $session_expire;
$sth = \Db::pdo()->prepare("INSERT INTO epube_sessions (id, data, expire)
VALUES (?, '', ?)");
$sth->execute([$id, $expire]);
return "";
}
}
function epube_write(string $id, string $data): bool {
global $session_expire;
$data = base64_encode($data);
$expire = time() + $session_expire;
$sth = \Db::pdo()->prepare("SELECT id FROM epube_sessions WHERE id=?");
$sth->execute([$id]);
if ($sth->fetch()) {
$sth = \Db::pdo()->prepare("UPDATE epube_sessions SET data=?, expire=? WHERE id=?");
$sth->execute([$data, $expire, $id]);
} else {
$sth = \Db::pdo()->prepare("INSERT INTO epube_sessions (id, data, expire)
VALUES (?, ?, ?)");
$sth->execute([$id, $data, $expire]);
}
return true;
}
function epube_close(): bool {
return true;
}
function epube_destroy(string $id): bool {
$sth = \Db::pdo()->prepare("DELETE FROM epube_sessions WHERE id = ?");
$sth->execute([$id]);
return true;
}
function epube_gc(int $lifetime): bool {
\Db::pdo()->query("DELETE FROM epube_sessions WHERE expire < " . time());
return true;
}
session_set_save_handler('epube_open',
'epube_close', 'epube_read',
'epube_write', 'epube_destroy',
'epube_gc'); // @phpstan-ignore-line
}
if (isset($_COOKIE[session_name()])) {
if (session_status() != PHP_SESSION_ACTIVE)
session_start();
}
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