311 lines
13 KiB
PHP
311 lines
13 KiB
PHP
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<?php
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/**
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* 简航 SimpleNav —— 安装向导
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*
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* 用途：全新部署时一次性完成「环境自检 → 建库 → 创建管理员」。
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* 装完会在 data/install.lock 写一个锁文件，之后任何人再访问本页都只会看到
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* 「已安装」提示，不会再执行任何写操作。
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*
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* ⚠️ 安全须知：
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* ① 本文件装完**建议直接从服务器删掉**（install.lock 只是第二道保险）；
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* ② data/ 目录必须禁止 Web 访问（data/.htaccess 已拦，根 .htaccess 也拦了 ^data/）；
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* ③ 已存在管理员账号时，本页拒绝执行安装（防止有人删了 lock 就重装夺权）。
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*/
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declare(strict_types=1);
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require_once __DIR__ . '/functions.php';
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/* =========================================================================
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* 环境自检
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* ========================================================================= */
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/**
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* 判断目录能否创建文件（目录本身不存在时，看最近的已存在父目录是否可写）。
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* 只做 check，不留下任何测试文件。
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*/
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function sn_dir_writable(string $dir): bool
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{
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if (is_dir($dir)) {
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return is_writable($dir);
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}
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$p = dirname($dir);
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while (!is_dir($p) && $p !== dirname($p)) {
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$p = dirname($p);
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}
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return is_dir($p) && is_writable($p);
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}
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/** @return array<int,array{name:string,ok:bool,detail:string,required:bool}> */
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function sn_env_checks(): array
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{
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$c = [];
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$add = static function (string $name, bool $ok, string $detail, bool $required = true) use (&$c): void {
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$c[] = ['name' => $name, 'ok' => $ok, 'detail' => $detail, 'required' => $required];
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};
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$add('PHP 版本 ≥ 8.0', PHP_VERSION_ID >= 80000, '当前 ' . PHP_VERSION . '（' . PHP_SAPI . '）');
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$add('PDO SQLite 扩展', extension_loaded('pdo_sqlite'),
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extension_loaded('pdo_sqlite') ? '已启用' : '未启用，无法建库（必需）');
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$add('mbstring 扩展', extension_loaded('mbstring'),
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extension_loaded('mbstring') ? '已启用' : '未启用，中文长度校验会失效（必需）');
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$add('GD 扩展', extension_loaded('gd'),
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extension_loaded('gd') ? '已启用' : '未启用，无法抓取/缩放网站图标；仍可安装，但图标只能显示首字母块', false);
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$add('网络抓取能力', function_exists('curl_init') || (bool)ini_get('allow_url_fopen'),
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function_exists('curl_init') ? 'curl 可用' : ((bool)ini_get('allow_url_fopen') ? '仅 allow_url_fopen' : '都没有，无法自动抓取网站名称/图标（建议开启）'));
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$add('fileinfo 扩展', extension_loaded('fileinfo'),
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extension_loaded('fileinfo') ? '已启用' : '未启用，自定义图标的类型识别会退化');
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$dirs = [
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DATA_PATH => '数据目录 data/（放 SQLite 数据库）',
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ICON_PATH => '网站图标目录 uploads/icons/',
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SITE_ICON_PATH => '站点图标目录 uploads/site/',
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];
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foreach ($dirs as $dir => $label) {
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$rel = ltrim(str_replace(APP_PATH, '', $dir), '/\\');
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$add($label, sn_dir_writable($dir), sn_dir_writable($dir) ? ($rel . ' 可写') : ($rel . ' 不可写，请给 Web 用户写权限'));
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}
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// 这两项只提醒，不阻断安装：即使漏了也能装，但数据文件会被公网下载
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$dataHt = is_file(DATA_PATH . '/.htaccess');
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$add('data/ 已禁止 Web 访问', $dataHt,
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$dataHt ? 'data/.htaccess 存在' : '缺少 data/.htaccess，数据库可能被直接下载（强烈建议补上）', false);
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return $c;
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}
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$checks = sn_env_checks();
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$envOk = true;
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$warnOnly = [];
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foreach ($checks as $ck) {
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if (!$ck['ok']) {
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if ($ck['required']) {
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$envOk = false;
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} else {
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$warnOnly[] = $ck['name'];
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}
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}
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}
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/* =========================================================================
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* 安装状态
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* ========================================================================= */
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$lockFile = DATA_PATH . '/install.lock';
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$dbExists = is_file(DB_PATH);
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$hasAdmin = false;
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if ($dbExists) {
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try {
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$hasAdmin = (int)db()->query('SELECT COUNT(*) FROM users')->fetchColumn() > 0;
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} catch (Throwable $e) {
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// 库文件存在但读不出来（损坏 / 不可写）—— 环境检查会报，这里不重复喊
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}
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}
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$installed = is_file($lockFile) || $hasAdmin;
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$err = '';
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$done = false;
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/* =========================================================================
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* 执行安装
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* ========================================================================= */
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if (!$installed && $_SERVER['REQUEST_METHOD'] === 'POST') {
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$siteName = trim((string)($_POST['site_name'] ?? ''));
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$u = trim((string)($_POST['username'] ?? ''));
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$p = (string)($_POST['password'] ?? '');
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$p2 = (string)($_POST['password2'] ?? '');
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if (!$envOk) {
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$err = '环境检查未全部通过，请先解决上面标红的问题';
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} elseif ($u === '' || $p === '') {
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$err = '用户名和密码都不能为空';
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} elseif (!preg_match('/^[A-Za-z0-9_.\-]{2,32}$/', $u)) {
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$err = '用户名只能用字母、数字、下划线、点、连字符，长度 2~32';
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} elseif (mb_strlen($p) < 6) {
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$err = '密码至少 6 位（建议 8 位以上，混合大小写和数字）';
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} elseif ($p !== $p2) {
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$err = '两次输入的密码不一致';
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} else {
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try {
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$pdo = db(); // 触发建表 + 写入默认设置/搜索引擎/示例板块
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// 双保险：并发下第二个请求别重复创建
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if ((int)$pdo->query('SELECT COUNT(*) FROM users')->fetchColumn() > 0) {
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throw new RuntimeException('已有管理员账号，安装已中止。请直接登录。');
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}
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$st = $pdo->prepare('INSERT INTO users (username, password_hash, created_at) VALUES (?,?,?)');
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$st->execute([$u, password_hash($p, PASSWORD_DEFAULT), date('Y-m-d H:i:s')]);
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if ($siteName !== '') {
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$pdo->prepare('INSERT INTO settings (k,v) VALUES (?,?) ON CONFLICT(k) DO UPDATE SET v=excluded.v')
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->execute(['site_name', $siteName]);
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}
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// 锁文件：写不进去不算致命（已有管理员账号时本页本来就拒绝执行）
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@file_put_contents($lockFile, date('c') . " installed\n");
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if (session_status() !== PHP_SESSION_ACTIVE) {
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session_start();
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}
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$_SESSION['uid'] = (int)$pdo->lastInsertId();
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$done = true;
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} catch (Throwable $e) {
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$err = '安装失败：' . $e->getMessage();
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}
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}
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}
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/* 装成功后统计一下库的信息（给用户看，也证明库真的建好了） */
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$dbInfo = null;
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if ($done || $installed) {
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try {
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$pdo = db();
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$cnt = static function (string $t) use ($pdo): int {
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return (int)$pdo->query("SELECT COUNT(*) FROM {$t}")->fetchColumn();
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};
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$dbInfo = [
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'path' => DB_PATH,
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'size' => is_file(DB_PATH) ? (int)filesize(DB_PATH) : 0,
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'groups' => $cnt('groups'),
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'sites' => $cnt('sites'),
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'engines' => $cnt('engines'),
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'users' => $cnt('users'),
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];
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} catch (Throwable $e) {
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$dbInfo = null;
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}
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}
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$title = $installed ? '已安装' : '安装向导';
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?><!DOCTYPE html>
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<html lang="zh-CN">
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<title><?= e($title) ?> · <?= e(APP_NAME) ?></title>
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<link rel="stylesheet" href="<?= e(asset('assets/css/style.css')) ?>">
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<link rel="stylesheet" href="<?= e(asset('assets/css/admin.css')) ?>">
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<style>
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.install-card{max-width:760px}
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.install-card h1{font-size:22px;margin:0 0 4px}
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.install-card .sub{margin:0 0 18px;color:var(--muted,#888);font-size:13px}
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.env{width:100%;border-collapse:collapse;margin:0 0 18px;font-size:13px;text-align:left}
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.env td{padding:7px 8px;border-bottom:1px solid rgba(128,128,128,.18);vertical-align:top}
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.env td:first-child{width:26px;text-align:center;font-weight:700}
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.env td:last-child{color:var(--muted,#777)}
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.env .ok td:first-child{color:#128a3c}
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.env .no td:first-child{color:#c62828}
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.env .warn td:first-child{color:#b26a00}
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.env .no td:last-child{color:#c62828}
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.sec{margin:20px 0 10px;font-size:13px;font-weight:700;letter-spacing:.02em;opacity:.75}
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.dbinfo{background:rgba(128,128,128,.09);border-radius:8px;padding:12px 14px;font-size:13px;margin:0 0 16px}
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.dbinfo code{font-size:12px;word-break:break-all}
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.dbinfo dl{margin:6px 0 0;display:grid;grid-template-columns:auto 1fr;gap:4px 14px}
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.dbinfo dt{opacity:.7}
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.dbinfo dd{margin:0;font-variant-numeric:tabular-nums}
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.tip{font-size:12px;line-height:1.7;color:var(--muted,#777);margin:14px 0 0}
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.tip strong{color:#c62828}
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</style>
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</head>
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<body class="admin">
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<div class="login-wrap">
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<div class="login-card install-card">
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<?php if ($installed): ?>
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<h1><?= e(APP_NAME) ?> 已安装</h1>
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<p class="sub">本系统已完成初始化，安装向导不会再执行任何写操作。</p>
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<?php if ($dbInfo): ?>
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<div class="dbinfo">
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<strong>数据库信息</strong>
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<dl>
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<dt>类型</dt><dd>SQLite 3</dd>
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<dt>文件</dt><dd><code><?= e($dbInfo['path']) ?></code></dd>
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<dt>大小</dt><dd><?= number_format($dbInfo['size']) ?> 字节</dd>
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<dt>内容</dt><dd><?= (int)$dbInfo['groups'] ?> 个板块 · <?= (int)$dbInfo['sites'] ?> 个网站 · <?= (int)$dbInfo['engines'] ?> 个搜索引擎 · <?= (int)$dbInfo['users'] ?> 个账号</dd>
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</dl>
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</div>
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<?php endif; ?>
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<a class="btn primary block" href="<?= e(url($hasAdmin ? 'login.php' : '')) ?>"><?= $hasAdmin ? '去登录' : '去首页' ?></a>
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<p class="tip">
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安全提示：<strong>请把服务器上的 install.php 删掉</strong>。<br>
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虽然已有管理员账号时本页会拒绝执行安装，但删掉它能少一个入口。
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</p>
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<?php elseif ($done): ?>
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<h1>安装完成</h1>
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<p class="sub">数据库已创建，管理员账号已就绪。</p>
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<?php if ($dbInfo): ?>
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<div class="dbinfo">
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<strong>数据库信息</strong>
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<dl>
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<dt>类型</dt><dd>SQLite 3（文件型，无需数据库账号密码）</dd>
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<dt>文件</dt><dd><code><?= e($dbInfo['path']) ?></code></dd>
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<dt>大小</dt><dd><?= number_format($dbInfo['size']) ?> 字节</dd>
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<dt>内容</dt><dd><?= (int)$dbInfo['groups'] ?> 个板块 · <?= (int)$dbInfo['sites'] ?> 个网站 · <?= (int)$dbInfo['engines'] ?> 个搜索引擎 · <?= (int)$dbInfo['users'] ?> 个账号</dd>
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</dl>
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</div>
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<?php endif; ?>
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<a class="btn primary block" href="<?= e(url('admin/')) ?>">进入后台</a>
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<p class="tip">
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<strong>下一步（重要）：把服务器上的 install.php 删掉。</strong><br>
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后台默认已有一份示例板块和示例网站，进去之后可以随意删改、添加自己的链接。
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</p>
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<?php else: ?>
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<h1><?= e(APP_NAME) ?> 安装向导</h1>
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<p class="sub">本系统使用 <strong>SQLite</strong>：数据库是一个文件，不需要你填写数据库地址/账号/密码，向导会自动创建。</p>
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<?php if ($err): ?><div class="alert"><?= e($err) ?></div><?php endif; ?>
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<div class="sec">一、环境检查</div>
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<table class="env">
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<?php foreach ($checks as $ck): ?>
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<tr class="<?= $ck['ok'] ? 'ok' : ($ck['required'] ? 'no' : 'warn') ?>">
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<td><?= $ck['ok'] ? '✓' : ($ck['required'] ? '✕' : '!') ?></td>
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<td><?= e($ck['name']) ?><?= $ck['required'] ? '' : '（建议）' ?></td>
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<td><?= e($ck['detail']) ?></td>
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</tr>
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<?php endforeach; ?>
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</table>
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<?php if (!$envOk): ?>
|
|||
|
|
<div class="alert">标 ✕ 的项必须先解决才能安装。若目录不可写，请用 root 执行：<br>
|
|||
|
|
<code>chown -R www:www <?= e(APP_PATH) ?>/data <?= e(APP_PATH) ?>/uploads</code></div>
|
|||
|
|
<?php else: ?>
|
|||
|
|
|
|||
|
|
<div class="sec">二、数据库</div>
|
|||
|
|
<div class="dbinfo">
|
|||
|
|
<dl>
|
|||
|
|
<dt>类型</dt><dd>SQLite 3（PHP 内置，无需外部数据库服务）</dd>
|
|||
|
|
<dt>文件</dt><dd><code><?= e(DB_PATH) ?></code></dd>
|
|||
|
|
<dt>状态</dt><dd><?= is_file(DB_PATH) ? '文件已存在，将沿用并在其基础上初始化' : '尚不存在，安装时自动创建' ?></dd>
|
|||
|
|
</dl>
|
|||
|
|
</div>
|
|||
|
|
|
|||
|
|
<div class="sec">三、站点与管理员</div>
|
|||
|
|
<form method="post" action="">
|
|||
|
|
<input type="text" name="site_name" placeholder="站点名称（留空用默认「简航」）" maxlength="40" autocomplete="off">
|
|||
|
|
<input type="text" name="username" placeholder="管理员用户名" required maxlength="32" autocomplete="username">
|
|||
|
|
<input type="password" name="password" placeholder="管理员密码（至少 6 位）" required autocomplete="new-password">
|
|||
|
|
<input type="password" name="password2" placeholder="再输一次密码" required autocomplete="new-password">
|
|||
|
|
<button type="submit" class="btn primary block">开始安装</button>
|
|||
|
|
</form>
|
|||
|
|
|
|||
|
|
<p class="tip">
|
|||
|
|
安装会创建数据表，并写入一份<strong>示例板块与示例网站</strong>作为起点（可在后台随意删改）。<br>
|
|||
|
|
装完请<strong>立刻删除服务器上的 install.php</strong>。
|
|||
|
|
</p>
|
|||
|
|
|
|||
|
|
<?php endif; ?>
|
|||
|
|
<?php endif; ?>
|
|||
|
|
|
|||
|
|
</div>
|
|||
|
|
</div>
|
|||
|
|
</body>
|
|||
|
|
</html>
|