Replace basic auth with PHP session login

This commit is contained in:
hbrain 2026-05-25 22:31:46 +02:00
parent d088eb90cf
commit 2ffb90d17e
4 changed files with 89 additions and 8 deletions

62
auth.php Normal file
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@ -0,0 +1,62 @@
<?php
const MVLOG_AUTH_CONFIG = '/etc/mvlog/auth.php';
function mvlog_session_start(): void {
if (session_status() === PHP_SESSION_ACTIVE) return;
$secure = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
session_name('MVLOGSESSID');
session_set_cookie_params([
'lifetime' => 0,
'path' => '/mvlog',
'secure' => $secure,
'httponly' => true,
'samesite' => 'Lax',
]);
session_start();
}
function mvlog_auth_config(): array {
if (!is_file(MVLOG_AUTH_CONFIG)) return ['users' => []];
$config = require MVLOG_AUTH_CONFIG;
return is_array($config) ? $config : ['users' => []];
}
function mvlog_login(string $user, string $password): bool {
mvlog_session_start();
$users = mvlog_auth_config()['users'] ?? [];
$hash = is_array($users) ? ($users[$user] ?? null) : null;
if (!is_string($hash) || !password_verify($password, $hash)) return false;
session_regenerate_id(true);
$_SESSION['mvlog_user'] = $user;
$_SESSION['mvlog_login_at'] = time();
return true;
}
function mvlog_current_user(): ?string {
mvlog_session_start();
return isset($_SESSION['mvlog_user']) && is_string($_SESSION['mvlog_user']) ? $_SESSION['mvlog_user'] : null;
}
function mvlog_require_login(): void {
if (mvlog_current_user() !== null) return;
$next = $_SERVER['REQUEST_URI'] ?? '/mvlog/new.php';
header('Location: login.php?next=' . rawurlencode($next));
exit;
}
function mvlog_logout(): void {
mvlog_session_start();
$_SESSION = [];
if (ini_get('session.use_cookies')) {
$params = session_get_cookie_params();
setcookie(session_name(), '', time() - 42000, $params['path'], $params['domain'] ?? '', $params['secure'], $params['httponly']);
}
session_destroy();
}
function mvlog_safe_next(string $next): string {
if ($next === '' || str_contains($next, "\n") || str_contains($next, "\r")) return 'new.php';
$parts = parse_url($next);
if ($parts === false || isset($parts['scheme']) || isset($parts['host'])) return 'new.php';
return $next;
}

23
login.php Normal file
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<?php
require __DIR__ . '/auth.php';
$err = '';
$next = mvlog_safe_next((string)($_GET['next'] ?? $_POST['next'] ?? 'new.php'));
if (mvlog_current_user() !== null) {
header('Location: ' . $next);
exit;
}
if ($_SERVER['REQUEST_METHOD'] === 'POST') {
$user = trim((string)($_POST['user'] ?? ''));
$pass = (string)($_POST['password'] ?? '');
if (mvlog_login($user, $pass)) {
header('Location: ' . $next);
exit;
}
$err = 'Invalid username or password.';
}
function h($s){ return htmlspecialchars((string)$s, ENT_QUOTES, 'UTF-8'); }
?>
<!doctype html><html><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><title>MVLog Login</title><link rel="stylesheet" href="style.css"></head><body>
<header class="site-header"><a class="brand" href="index.php"><h1>MVLog Admin</h1><p>Bubulescu.Org</p></a></header>
<main><section><h2>Log in</h2><?php if($err): ?><div class="err"><?=h($err)?></div><?php endif; ?><form method="post" autocomplete="on"><input type="hidden" name="next" value="<?=h($next)?>"><label>Username<input name="user" autocomplete="username" required autofocus></label><label>Password<input type="password" name="password" autocomplete="current-password" required></label><button type="submit">Log in</button></form></section></main>
</body></html>

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@ -1,12 +1,6 @@
<?php
$secure = (!empty($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off');
setcookie('mvlog_realm', bin2hex(random_bytes(8)), [
'expires' => time() + 31536000,
'path' => '/mvlog',
'secure' => $secure,
'httponly' => true,
'samesite' => 'Lax',
]);
require __DIR__ . '/auth.php';
mvlog_logout();
header('Cache-Control: no-store, no-cache, must-revalidate, max-age=0');
header('Location: index.php');
exit;

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@ -1,4 +1,6 @@
<?php
require __DIR__ . '/auth.php';
mvlog_require_login();
$config = require __DIR__ . "/config.php";
foreach (["videos_dir", "thumbs_dir", "uploads_dir"] as $d) if (!is_dir($config[$d])) mkdir($config[$d], 0775, true);
function h($s){ return htmlspecialchars((string)$s, ENT_QUOTES, "UTF-8"); }