feat: 外链中转 /go——点击统计 + 拦截 + 隐藏真实链接

- redirects 表 + UrlRedirector：go_url() 站外链接改写为 /go/{hash}（确定性 hash、同 URL 复用、并发安全、缓存）
- /go/{hash} 302 跳转 + 点击计数 + 最后点击时间；停用状态 410（二次拦截）；后台「外链中转」资源可查看点击量/启停/删除
- 接入点：正文外链（渲染器统一改写）、评论正文自动链接（comment_body）、评论作者网址、友链（侧边栏+友链页）；站内/相对/mailto/tel/锚点不中转
- 测试 6 个（改写/计数/拦截/复用/渲染/评论正文）；README 补充

README.md

@@ -104,6 +104,12 @@ php artisan workerman:serve stop
 - 失败重试：`WORKERMAN_MAX_TRIES`（默认 3），超时 `WORKERMAN_TIMEOUT`（默认 60s），重试耗尽进 `failed_jobs` 表
 - 降级路径：`php artisan queue:work` 照常可用（同一队列）
 
+## 外链中转（/go）
+
+- 正文外链、评论正文 URL、评论作者网址、友链统一改写为 `/go/{hash}`：302 跳转 + **点击统计**、可**停用拦截**（返回 410）、隐藏真实链接、为未来广告位预留
+- 站内链接/相对路径/mailto/tel/锚点不中转；同一 URL 复用同一短码
+- 后台「外链中转」可查看点击量、按状态筛选、启停
+
 ## 前台缓存
 
 - 匿名 GET 页面整页缓存（首页/列表/文章/归档/标签等），TTL 默认 300 秒（`PAGE_CACHE_TTL`），命中时零数据库查询

app/Blog/Controllers/GoController.php

@@ -0,0 +1,26 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Blog\Controllers;
+
+use App\Models\Redirect;
+
+class GoController
+{
+    /**
+     * 外链中转跳转：计数 + 302。停用的链接返回 410（可作二次拦截）。
+     */
+    public function show(string $hash)
+    {
+        $redirect = Redirect::query()->where('hash', $hash)->firstOrFail();
+
+        if (! $redirect->isActive()) {
+            abort(410);
+        }
+
+        $redirect->hit();
+
+        return redirect()->away($redirect->target_url, 302);
+    }
+}

app/Blog/Services/PostContentRenderer.php

@@ -46,7 +46,31 @@ class PostContentRenderer
         $html = app(\App\Blog\Support\PluginManager::class)->applyFilters('post.rendered', $html, $post);
 
         // 兜底：任何情况下不把裸 [paid] 标签输出到页面（如会员插件被停用时）
-        return preg_replace('/\[(\/?paid)\]/i', '', $html);
+        $html = preg_replace('/\[(\/?paid)\]/i', '', $html);
+
+        // 外链中转：站外链接改写为 /go/{hash}（点击统计/拦截）
+        return $this->rewriteExternalLinks($html);
+    }
+
+    /**
+     * 把正文里的站外 <a href> 改写为 /go 中转地址（站内/相对/锚点/mailto 不变）。
+     */
+    private function rewriteExternalLinks(string $html): string
+    {
+        return preg_replace_callback(
+            '/<a\s+([^>]*?href=["\'])([^"\']+)(["\'][^>]*)>(.*?)<\/a>/is',
+            function (array $m): string {
+                $url = html_entity_decode(trim($m[2]));
+                $go = go_url($url);
+
+                if ($go === $url) {
+                    return $m[0];
+                }
+
+                return '<a '.$m[1].e($go).$m[3].'>'.$m[4].'</a>';
+            },
+            $html
+        );
     }
 
     /**

app/Blog/Services/UrlRedirector.php

@@ -0,0 +1,72 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Blog\Services;
+
+use App\Models\Redirect;
+use Illuminate\Database\UniqueConstraintViolationException;
+use Illuminate\Support\Facades\Cache;
+
+/**
+ * 外链中转：把站外链接改写为 /go/{hash}，用于点击统计、二次拦截与未来广告位。
+ * 站内链接、相对路径、mailto/tel/锚点不中转。
+ */
+class UrlRedirector
+{
+    public function goUrl(string $url): string
+    {
+        $url = trim((string) $url);
+
+        if (! $this->isExternal($url)) {
+            return $url;
+        }
+
+        return route('go.show', $this->hashFor($url));
+    }
+
+    public function isExternal(string $url): bool
+    {
+        if (! preg_match('#^https?://#i', $url)) {
+            return false;
+        }
+
+        $host = parse_url($url, PHP_URL_HOST);
+
+        if (! $host) {
+            return false;
+        }
+
+        $internalHost = parse_url((string) config('app.url'), PHP_URL_HOST);
+
+        return strcasecmp($host, (string) $internalHost) !== 0;
+    }
+
+    /**
+     * 取 URL 对应的短 hash（确定性：同一 URL 复用同一条记录，并发安全）。
+     */
+    public function hashFor(string $url): string
+    {
+        return Cache::remember('go.hash.'.md5($url), now()->addDay(), function () use ($url) {
+            $hash = substr(hash('sha256', $url), 0, 10);
+
+            for ($i = 0; $i < 3; $i++) {
+                try {
+                    Redirect::create(['hash' => $hash, 'target_url' => $url]);
+
+                    return $hash;
+                } catch (UniqueConstraintViolationException) {
+                    $existing = Redirect::where('target_url', $url)->first();
+
+                    if ($existing) {
+                        return $existing->hash;
+                    }
+
+                    $hash = substr(hash('sha256', $url.$i), 0, 10);
+                }
+            }
+
+            return $hash;
+        });
+    }
+}

app/Filament/Resources/RedirectResource.php

@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Filament\Resources;
+
+use App\Filament\Resources\RedirectResource\Pages\ListRedirects;
+use App\Models\Redirect;
+use BackedEnum;
+use Filament\Actions\Action;
+use Filament\Actions\DeleteAction;
+use Filament\Resources\Resource;
+use Filament\Schemas\Schema;
+use Filament\Support\Icons\Heroicon;
+use Filament\Tables\Columns\TextColumn;
+use Filament\Tables\Table;
+
+class RedirectResource extends Resource
+{
+    protected static \UnitEnum|string|null $navigationGroup = '管理';
+
+    protected static ?string $model = Redirect::class;
+
+    protected static string|BackedEnum|null $navigationIcon = Heroicon::OutlinedArrowUturnRight;
+
+    protected static ?string $navigationLabel = '外链中转';
+
+    protected static ?string $pluralModelLabel = '外链中转';
+
+    public static function form(Schema $schema): Schema
+    {
+        return $schema;
+    }
+
+    public static function table(Table $table): Table
+    {
+        return $table
+            ->columns([
+                TextColumn::make('hash')
+                    ->label('短码')
+                    ->badge()
+                    ->color('gray'),
+                TextColumn::make('target_url')
+                    ->label('目标地址')
+                    ->limit(50)
+                    ->copyable()
+                    ->searchable(),
+                TextColumn::make('clicks')
+                    ->label('点击量')
+                    ->numeric()
+                    ->sortable(),
+                TextColumn::make('status')
+                    ->label('状态')
+                    ->badge()
+                    ->formatStateUsing(fn ($state) => $state === 'active' ? '启用' : '停用')
+                    ->color(fn ($state) => $state === 'active' ? 'success' : 'danger'),
+                TextColumn::make('last_clicked_at')
+                    ->label('最后点击')
+                    ->dateTime('Y-m-d H:i')
+                    ->placeholder('—')
+                    ->sortable(),
+                TextColumn::make('created_at')
+                    ->label('创建时间')
+                    ->dateTime('Y-m-d H:i')
+                    ->toggleable(isToggledHiddenByDefault: true),
+            ])
+            ->filters([
+                \Filament\Tables\Filters\SelectFilter::make('status')
+                    ->label('状态')
+                    ->options(['active' => '启用', 'disabled' => '停用']),
+            ], \Filament\Tables\Enums\FiltersLayout::AboveContent)
+            ->recordActions([
+                Action::make('toggle')
+                    ->label(fn (Redirect $record) => $record->isActive() ? '停用' : '启用')
+                    ->color(fn (Redirect $record) => $record->isActive() ? 'danger' : 'success')
+                    ->action(fn (Redirect $record) => $record->update(['status' => $record->isActive() ? 'disabled' : 'active'])),
+                DeleteAction::make(),
+            ])
+            ->recordUrl(null)
+            ->recordAction(null)
+            ->defaultSort('clicks', 'desc');
+    }
+
+    public static function getPages(): array
+    {
+        return [
+            'index' => ListRedirects::route('/'),
+        ];
+    }
+}

app/Filament/Resources/RedirectResource/Pages/ListRedirects.php

@@ -0,0 +1,13 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Filament\Resources\RedirectResource\Pages;
+
+use App\Filament\Resources\RedirectResource;
+use Filament\Resources\Pages\ListRecords;
+
+class ListRedirects extends ListRecords
+{
+    protected static string $resource = RedirectResource::class;
+}

app/Models/Redirect.php

@@ -0,0 +1,29 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Models;
+
+use Illuminate\Database\Eloquent\Model;
+
+class Redirect extends Model
+{
+    protected $fillable = [
+        'hash', 'target_url', 'clicks', 'status', 'last_clicked_at',
+    ];
+
+    protected $casts = [
+        'last_clicked_at' => 'datetime',
+    ];
+
+    public function isActive(): bool
+    {
+        return $this->status === 'active';
+    }
+
+    public function hit(): void
+    {
+        $this->increment('clicks');
+        $this->update(['last_clicked_at' => now()]);
+    }
+}

app/Support/helpers.php

@@ -42,3 +42,31 @@ if (! function_exists('blog_setting')) {
         return \App\Models\Setting::get($key, $default);
     }
 }
+
+if (! function_exists('go_url')) {
+    /**
+     * 外链中转：站外链接改写为 /go/{hash}（点击统计/拦截），站内链接原样返回。
+     */
+    function go_url(string $url): string
+    {
+        return app(\App\Blog\Services\UrlRedirector::class)->goUrl($url);
+    }
+}
+
+if (! function_exists('comment_body')) {
+    /**
+     * 评论正文：转义 + 自动链接 URL（走 /go 中转，nofollow）。
+     */
+    function comment_body(string $text): string
+    {
+        $text = e($text);
+
+        $text = preg_replace_callback(
+            '#(https?://[^\s<>"\'()]+)#i',
+            fn (array $m) => '<a href="'.e(go_url($m[1])).'" target="_blank" rel="nofollow noopener">'.$m[1].'</a>',
+            $text
+        );
+
+        return nl2br($text);
+    }
+}

database/migrations/2026_08_12_400000_create_redirects_table.php

@@ -0,0 +1,30 @@
+<?php
+
+declare(strict_types=1);
+
+use Illuminate\Database\Migrations\Migration;
+use Illuminate\Database\Schema\Blueprint;
+use Illuminate\Support\Facades\Schema;
+
+return new class extends Migration
+{
+    public function up(): void
+    {
+        Schema::create('redirects', function (Blueprint $table) {
+            $table->id();
+            $table->string('hash', 16)->unique();
+            $table->text('target_url');
+            $table->unsignedBigInteger('clicks')->default(0);
+            $table->string('status', 20)->default('active'); // active / disabled
+            $table->timestamp('last_clicked_at')->nullable();
+            $table->timestamps();
+
+            $table->index('target_url');
+        });
+    }
+
+    public function down(): void
+    {
+        Schema::dropIfExists('redirects');
+    }
+};

resources/views/links.blade.php

@@ -8,7 +8,7 @@
         <ul class="links-list">
             @forelse($links as $link)
                 <li>
-                    <a href="{{ $link->url }}" target="_blank" rel="noopener nofollow">{{ $link->name }}</a>
+                    <a href="{{ go_url($link->url) }}" target="_blank" rel="noopener nofollow">{{ $link->name }}</a>
                     @if($link->note)<span class="link-note">— {{ $link->note }}</span>@endif
                 </li>
             @empty

resources/views/partials/sidebar.blade.php

@@ -55,7 +55,7 @@
         <h3 class="widget-title">友情链接</h3>
         <ul class="widget-list">
             @forelse($links as $link)
-                <li><a href="{{ $link->url }}" target="_blank" rel="noopener">{{ $link->name }}</a></li>
+                <li><a href="{{ go_url($link->url) }}" target="_blank" rel="noopener">{{ $link->name }}</a></li>
             @empty
                 <li>暂无链接</li>
             @endforelse

resources/views/show.blade.php

@@ -68,11 +68,11 @@
                         <div class="comment-head">
                             <strong>{{ $comment->author_name }}</strong>
                             @if($comment->author_url)
-                                <span>· <a href="{{ $comment->author_url }}" target="_blank" rel="noopener nofollow">访问主页</a></span>
+                                <span>· <a href="{{ go_url($comment->author_url) }}" target="_blank" rel="noopener nofollow">访问主页</a></span>
                             @endif
                             <span class="comment-time">· {{ $comment->created_at->format(blog_setting('comment_timeformat', 'Y-m-d H:i')) }}</span>
                         </div>
-                        <div class="comment-body">{!! nl2br(e($comment->content)) !!}</div>
+                        <div class="comment-body">{!! comment_body($comment->content) !!}</div>
                     </div>
                 @empty
                     <p class="empty">暂无评论</p>

routes/web.php

@@ -7,6 +7,7 @@ use App\Blog\Controllers\AuthController;
 use App\Blog\Controllers\CategoryController;
 use App\Blog\Controllers\CommentController;
 use App\Blog\Controllers\FeedController;
+use App\Blog\Controllers\GoController;
 use App\Blog\Controllers\HomeController;
 use App\Blog\Controllers\LegacyController;
 use App\Blog\Controllers\LinkController;
@@ -38,6 +39,9 @@ Route::post('/posts/{post}/comments', [CommentController::class, 'store'])->name
 // 浏览量统计（独立端点，避开整页缓存，保证实时）
 Route::get('/track-view/{post}', fn (\App\Models\Post $post) => response($post->increment('views') ? '' : '', 204))->name('track-view');
 
+// 外链中转：/go/{hash} 302 跳转，记录点击量；停用状态返回 410
+Route::get('/go/{hash}', [GoController::class, 'show'])->name('go.show');
+
 Route::get('/category/{slug}.shtml', [CategoryController::class, 'show'])->where('slug', '[^/]+')->name('category.show');
 Route::get('/category/{slug}', fn (string $slug) => redirect()->route('category.show', $slug, 301))->where('slug', '[^/]+');
 

tests/Feature/AdminPagesTest.php

@@ -55,6 +55,7 @@ class AdminPagesTest extends TestCase
         $this->actingAs($this->admin)->get('/admin/plugins')->assertOk();
         $this->actingAs($this->admin)->get('/admin/payments')->assertOk();
         $this->actingAs($this->admin)->get('/admin/ai-settings')->assertOk();
+        $this->actingAs($this->admin)->get('/admin/redirects')->assertOk();
     }
 
     public function test_guest_is_redirected_to_login(): void

tests/Feature/GoRedirectTest.php

@@ -0,0 +1,90 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Tests\Feature;
+
+use App\Blog\Services\PostContentRenderer;
+use App\Blog\Services\UrlRedirector;
+use App\Models\Post;
+use App\Models\Redirect;
+use Illuminate\Foundation\Testing\RefreshDatabase;
+use Tests\TestCase;
+
+class GoRedirectTest extends TestCase
+{
+    use RefreshDatabase;
+
+    public function test_go_url_rewrites_external_but_keeps_internal(): void
+    {
+        $go = app(UrlRedirector::class);
+
+        $this->assertStringContainsString('/go/', $go->goUrl('https://example.com/path'));
+        $this->assertSame('http://laralog.test/posts/1', $go->goUrl('http://laralog.test/posts/1'));
+        $this->assertSame('/posts/1', $go->goUrl('/posts/1'));
+        $this->assertSame('mailto:a@b.com', $go->goUrl('mailto:a@b.com'));
+        $this->assertSame('#anchor', $go->goUrl('#anchor'));
+    }
+
+    public function test_go_redirect_counts_clicks(): void
+    {
+        $redirect = Redirect::create([
+            'hash' => 'abc123def0',
+            'target_url' => 'https://example.com/target',
+        ]);
+
+        $this->get('/go/abc123def0')
+            ->assertRedirect('https://example.com/target');
+
+        $redirect->refresh();
+        $this->assertSame(1, $redirect->clicks);
+        $this->assertNotNull($redirect->last_clicked_at);
+    }
+
+    public function test_disabled_redirect_returns_410(): void
+    {
+        Redirect::create([
+            'hash' => 'blocked0000',
+            'target_url' => 'https://example.com/bad',
+            'status' => 'disabled',
+        ]);
+
+        $this->get('/go/blocked0000')->assertStatus(410);
+    }
+
+    public function test_same_url_reuses_same_hash(): void
+    {
+        $a = app(UrlRedirector::class)->goUrl('https://example.com/dup');
+        $b = app(UrlRedirector::class)->goUrl('https://example.com/dup');
+
+        $this->assertSame($a, $b);
+        $this->assertSame(1, Redirect::query()->where('target_url', 'https://example.com/dup')->count());
+    }
+
+    public function test_post_render_rewrites_external_links(): void
+    {
+        $post = Post::create([
+            'title' => '外链测试',
+            'slug' => 'go-test',
+            'content' => "正文 <a href=\"https://example.com/x\" target=\"_blank\">外链</a> 和 <a href=\"http://laralog.test/posts/1\">站内</a>",
+            'content_format' => 'html',
+            'status' => 'published',
+            'published_at' => now(),
+        ]);
+
+        $html = app(PostContentRenderer::class)->render($post);
+
+        $this->assertStringContainsString('href="http://laralog.test/go/', $html);
+        $this->assertStringContainsString('href="http://laralog.test/posts/1"', $html);
+        $this->assertStringNotContainsString('href="https://example.com/x"', $html);
+    }
+
+    public function test_comment_body_autolinks_and_redirects(): void
+    {
+        $html = comment_body('看看 https://example.com/note 这个链接');
+
+        $this->assertStringContainsString('href="http://laralog.test/go/', $html);
+        $this->assertStringContainsString('rel="nofollow noopener"', $html);
+        $this->assertStringNotContainsString('href="https://example.com/note"', $html);
+    }
+}

themes/sablog/views/partials/sidebar.blade.php

@@ -55,7 +55,7 @@
         <h3>友情链接</h3>
         <ul>
             @forelse($links as $link)
-                <li><a href="{{ $link->url }}" target="_blank" rel="noopener">{{ $link->name }}</a></li>
+                <li><a href="{{ go_url($link->url) }}" target="_blank" rel="noopener">{{ $link->name }}</a></li>
             @empty
                 <li>暂无链接</li>
             @endforelse

themes/sablog/views/show.blade.php

@@ -66,10 +66,10 @@
                 <div class="comment" id="comment-{{ $comment->id }}">
                     <div class="comment-head">
                         <strong>{{ $comment->author_name }}</strong>
-                        @if($comment->author_url)<span>· <a href="{{ $comment->author_url }}" target="_blank" rel="noopener nofollow">访问主页</a></span>@endif
+                        @if($comment->author_url)<span>· <a href="{{ go_url($comment->author_url) }}" target="_blank" rel="noopener nofollow">访问主页</a></span>@endif
                         <span class="comment-time">· {{ $comment->created_at->format(blog_setting('comment_timeformat', 'Y-m-d H:i')) }}</span>
                     </div>
-                    <div class="comment-body">{!! nl2br(e($comment->content)) !!}</div>
+                    <div class="comment-body">{!! comment_body($comment->content) !!}</div>
                 </div>
             @empty
                 <p class="empty">暂无评论</p>