287 lines
9.5 KiB
PHP
287 lines
9.5 KiB
PHP
<?php
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declare(strict_types=1);
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namespace ywxapp\middleware;
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use Closure;
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use think\App;
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use think\exception\HttpException;
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use think\Request;
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use think\Response;
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/**
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* 多根目录多应用中间件
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*
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* 核心语义：
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* - "blog" → 按 roots顺序查找，找到第一个匹配即用
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* - "app2:blog" → 强制在 /app2/blog找，找不到直接 404
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* - 都不支持"先查 app找不到再降级到 app2"再降级这种串行写法
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* （显式前缀必须严格匹配，避免行为不可预测）
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*/
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class MultiApp
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{
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protected App $app;
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/** @var array<string,string> 根目录标识 => 绝对路径 */
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protected array $roots = [];
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/** @var array<string,string> 根目录标识 => 命名空间前缀 */
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protected array $namespaces = [];
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public function __construct(App $app)
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{
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$this->app = $app;
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$this->roots = $app->config->get('app.app_roots', [
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'app' => $app->getBasePath(),
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'addon' => $app->getRootPath() . 'addon' . DIRECTORY_SEPARATOR,
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]);
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// $this->namespaces = $app->config->get('app.app_namespaces', [
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// 'app' => 'app',
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// 'addon' => 'addon',
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// ]);
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$this->namespaces = [
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'app' => 'app',
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'addon' => 'addon',
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];
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}
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public function handle($request, Closure $next)
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{
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if (!$this->parseMultiApp()) {
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return $next($request);
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}
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return $this->app->middleware
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->pipeline('app')
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->send($request)
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->then(function ($request) use ($next) {
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return $next($request);
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});
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}
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protected function getRoutePath(): string
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{
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return $this->app->getAppPath() . 'route' . DIRECTORY_SEPARATOR;
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}
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/**
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* 核心解析
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*/
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protected function parseMultiApp(): bool
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{
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$scriptName = $this->getScriptName();
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$defaultApp = $this->app->config->get('app.default_app') ?: 'index';
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$appName = $this->app->http->getName();
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// ==================== 阶段 1:独立入口 / 显式绑定 ====================
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if ($appName || ($scriptName && !in_array($scriptName, ['index', 'router', 'think']))) {
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$appName = $appName ?: $scriptName;
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$this->app->http->setBind();
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// 独立入口可不走 domain_bind,直接解析
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$resolved = $this->resolve($appName);
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if (!$resolved) {
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throw new HttpException(404, 'app not exists:' . $appName);
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}
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return $this->applyResolved($resolved, $appName);
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}
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// ==================== 阶段 2: 自动识别 ====================
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$this->app->http->setBind(false);
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$appName = null;
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// -------- 2.1 域名绑定 --------
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$bind = $this->app->config->get('app.domain_bind', []);
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if (!empty($bind)) {
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$subDomain = $this->app->request->subDomain();
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$domain = $this->app->request->host(true);
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if (isset($bind[$domain])) {
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$appName = $bind[$domain];
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$this->app->http->setBind();
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} elseif (isset($bind[$subDomain])) {
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$appName = $bind[$subDomain];
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$this->app->http->setBind();
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} elseif (isset($bind['*'])) {
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$appName = $bind['*'];
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$this->app->http->setBind();
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}
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}
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if ($this->app->http->isBind()) {
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$resolved = $this->resolve($appName);
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if (!$resolved) {
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throw new HttpException(404, 'app not exists:' . $appName);
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}
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return $this->applyResolved($resolved, $appName);
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}
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// -------- 2.2 URL 路径识别 --------
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$path = $this->app->request->pathinfo();
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$map = $this->app->config->get('app.app_map', []);
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$deny = $this->app->config->get('app.deny_app_list', []);
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$fullName = current(explode('/', $path));
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if (strpos($fullName, '.')) {
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$fullName = strstr($fullName, '.', true);
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}
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// 分支1: 命中 app_map
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if (isset($map[$fullName])) {
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if ($map[$fullName] instanceof Closure) {
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$mapped = call_user_func_array($map[$fullName], [$this->app]) ?: $fullName;
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} else {
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$mapped = $map[$fullName];
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}
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$resolved = $this->resolve($mapped);
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}
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// 分支 2: 黑名单 / map 显式禁用
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elseif ($fullName !== '' && (false !== array_search($fullName, $map) || in_array($fullName, $deny))) {
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throw new HttpException(404, 'app not exists:' . $fullName);
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}
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// 分支 3: map 通配 *
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elseif ($fullName !== '' && isset($map['*'])) {
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$resolved = $this->resolve($map['*']);
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}
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// 分支 4: URL 段本身带前缀(强制指定根)
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elseif (str_contains($fullName, ':')) {
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$resolved = $this->resolve($fullName);
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}
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// 分支 5: 默认行为 —— 多根顺序查找
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else {
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$name = $fullName !== '' ? $fullName : null;
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// URL 没给应用名 → 用 default_app
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$name ??= $defaultApp;
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$resolved = $this->resolve($name); // ← prefix='',走多根查找
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}
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// ===== 查找失败处理 =====
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if (!$resolved) {
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// app_express=true 且不是显式前缀时 → 兜底 default_app
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$express = $this->app->config->get('app.app_express', false);
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if ($express && !str_contains($fullName, ':')) {
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$resolved = $this->resolve($defaultApp);
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}
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if (!$resolved) {
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throw new HttpException(404, 'app not exists:' . ($fullName ?: $defaultApp));
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}
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}
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// 重写 pathinfo: 把 URL 第一段剥掉
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if ($fullName) {
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$this->app->request->setRoot('/' . $fullName);
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$this->app->request->setPathinfo(
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strpos($path, '/') ? ltrim(strstr($path, '/'), '/') : ''
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);
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}
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return $this->applyResolved($resolved, $fullName);
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}
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/**
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* 解析应用名为最终 [prefix, name, appPath]
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* 支持：
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* "app2:blog" → ['app2', 'blog', '/www/app2/blog/']
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* "blog" → ['', 'blog', null] ← 调用方拿到 null 时按 roots 顺序兜底
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*/
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protected function resolve(string $appName): ?array
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{
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[$prefix, $name] = $this->splitAppName($appName);
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if ($prefix !== '') {
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// 显式前缀: 必须严格匹配,失败立即返回 null(不再降级)
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if (!isset($this->roots[$prefix])) {
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return null;
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}
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$path = $this->roots[$prefix] . $name . DIRECTORY_SEPARATOR;
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return is_dir($path) ? [$prefix, $name, $path] : null;
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}
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// 多根顺序查找
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foreach ($this->roots as $key => $root) {
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$path = $root . $name . DIRECTORY_SEPARATOR;
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if (is_dir($path)) {
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return [$key, $name, $path];
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}
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}
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return null;
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}
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/**
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* 拆分应用名
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* "app2:blog" → ["app2", "blog"]
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* "blog" → ["", "blog"]
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*/
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protected function splitAppName(string $fullName): array
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{
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if ($fullName !== '' && str_contains($fullName, ':')) {
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[$prefix, $name] = explode(':', $fullName, 2);
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return [$prefix ?: '', $name];
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}
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return ['', $fullName];
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}
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protected function getScriptName(): string
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{
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if (isset($_SERVER['SCRIPT_FILENAME'])) {
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$file = $_SERVER['SCRIPT_FILENAME'];
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} elseif (isset($_SERVER['argv'][0])) {
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$file = realpath($_SERVER['argv'][0]);
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}
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return isset($file) ? pathinfo($file, PATHINFO_FILENAME) : '';
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}
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/**
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* 把 resolve() 结果落地到 App上下文
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*/
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protected function applyResolved(array $resolved, string $urlName): bool
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{
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[$prefix, $name, $appPath] = $resolved;
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$this->app->http->name($name);
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// 应用目录
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$this->app->setAppPath($appPath);
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// 命名空间
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$nsPrefix = $this->namespaces[$prefix] ?? $prefix;
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$this->app->setNamespace($nsPrefix . '\\' . $name);
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// 运行时: 按根 + 应用双层隔离
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$this->app->setRuntimePath(
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$this->app->getRuntimePath() . $prefix . DIRECTORY_SEPARATOR . $name . DIRECTORY_SEPARATOR
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);
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// 路由目录
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$this->app->http->setRoutePath($this->getRoutePath());
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// 应用专属配置/中间件/provider/语言包
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$this->loadApp($name, $appPath);
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return true;
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}
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protected function loadApp(string $appName, string $appPath): void
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{
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if (is_file($appPath . 'common.php')) {
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include_once $appPath . 'common.php';
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}
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$files = glob($appPath . 'config' . DIRECTORY_SEPARATOR . '*' . $this->app->getConfigExt());
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foreach ($files as $file) {
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$this->app->config->load($file, pathinfo($file, PATHINFO_FILENAME));
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}
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if (is_file($appPath . 'event.php')) {
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$this->app->loadEvent(include $appPath . 'event.php');
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}
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if (is_file($appPath . 'middleware.php')) {
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$this->app->middleware->import(include $appPath . 'middleware.php', 'app');
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}
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if (is_file($appPath . 'provider.php')) {
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$this->app->bind(include $appPath . 'provider.php');
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}
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$this->app->loadLangPack($this->app->lang->defaultLangSet());
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}
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}
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