Add fileserver support

app/Client/Factory.php

@@ -2,6 +2,7 @@
 
 namespace App\Client;
 
+use App\Client\Fileserver\Fileserver;
 use App\Client\Http\Controllers\AttachDataToLogController;
 use App\Client\Http\Controllers\ClearLogsController;
 use App\Client\Http\Controllers\CreateTunnelController;
@@ -33,6 +34,9 @@ class Factory
     /** @var App */
     protected $app;
 
+    /** @var Fileserver */
+    protected $fileserver;
+
     /** @var RouteGenerator */
     protected $router;
 
@@ -116,6 +120,15 @@ class Factory
         return $this;
     }
 
+    public function shareFolder(string $folder, string $name, $subdomain = null)
+    {
+        $host = $this->createFileServer($folder, $name);
+
+        $this->share($host, $subdomain);
+
+        return $this;
+    }
+
     protected function addRoutes()
     {
         $this->router->get('/', DashboardController::class);
@@ -134,18 +147,18 @@ class Factory
         }
     }
 
-    protected function detectNextFreeDashboardPort($port = 4040): int
+    protected function detectNextAvailablePort($startPort = 4040): int
     {
-        while (is_resource(@fsockopen('127.0.0.1', $port))) {
-            $port++;
+        while (is_resource(@fsockopen('127.0.0.1', $startPort))) {
+            $startPort++;
         }
 
-        return $port;
+        return $startPort;
     }
 
     public function createHttpServer()
     {
-        $dashboardPort = $this->detectNextFreeDashboardPort();
+        $dashboardPort = $this->detectNextAvailablePort();
 
         config()->set('expose.dashboard_port', $dashboardPort);
 
@@ -156,11 +169,25 @@ class Factory
         return $this;
     }
 
+    public function createFileServer(string $folder, string $name)
+    {
+        $port = $this->detectNextAvailablePort(8090);
+
+        $this->fileserver = new Fileserver($folder, $name, $port, '0.0.0.0', $this->loop);
+
+        return "127.0.0.1:{$port}";
+    }
+
     public function getApp(): App
     {
         return $this->app;
     }
 
+    public function getFileserver(): Fileserver
+    {
+        return $this->fileserver;
+    }
+
     public function run()
     {
         $this->loop->run();

app/Client/Fileserver/ConnectionHandler.php

@@ -0,0 +1,137 @@
+<?php
+
+namespace App\Client\Fileserver;
+
+use App\Http\Controllers\Concerns\LoadsViews;
+use App\Http\QueryParameters;
+use GuzzleHttp\Psr7\ServerRequest;
+use Illuminate\Http\Request;
+use Psr\Http\Message\ServerRequestInterface;
+use Ratchet\ConnectionInterface;
+use React\EventLoop\LoopInterface;
+use React\Http\Response;
+use React\Stream\ReadableResourceStream;
+use Symfony\Bridge\PsrHttpMessage\Factory\HttpFoundationFactory;
+use Symfony\Component\Finder\Finder;
+use Symfony\Component\Finder\Glob;
+use Symfony\Component\Finder\Iterator\FilenameFilterIterator;
+use Symfony\Component\Finder\SplFileInfo;
+
+class ConnectionHandler
+{
+    use LoadsViews;
+
+    /** @var string */
+    protected $rootFolder;
+
+    /** @var string */
+    protected $name;
+
+    /** @var LoopInterface */
+    protected $loop;
+
+    public function __construct(string $rootFolder, string $name, LoopInterface  $loop)
+    {
+        $this->rootFolder = $rootFolder;
+        $this->name = $name;
+        $this->loop = $loop;
+    }
+
+    public function handle(ServerRequestInterface $request)
+    {
+        $request = $this->createLaravelRequest($request);
+        $targetPath = realpath($this->rootFolder . DIRECTORY_SEPARATOR . $request->path());
+
+        if (! $this->isValidTarget($targetPath)) {
+            return new Response(404);
+        }
+
+        if (is_dir($targetPath)) {
+            // Directory listing
+            $directoryContent = Finder::create()
+                ->depth(0)
+                ->sort(function ($a, $b) {
+                    return strcmp(strtolower($a->getRealpath()), strtolower($b->getRealpath()));
+                })
+                ->in($targetPath);
+
+            if ($this->name !== '') {
+                $directoryContent->name($this->name);
+            }
+
+            $parentPath = explode('/', $request->path());
+            array_pop($parentPath);
+            $parentPath = implode('/', $parentPath);
+
+            return new Response(
+                200,
+                ['Content-Type' => 'text/html'],
+                $this->getView(null, 'client.fileserver', [
+                    'currentPath' => $request->path(),
+                    'parentPath' => $parentPath,
+                    'directory' => $targetPath,
+                    'directoryContent' => $directoryContent
+                ])
+            );
+        }
+
+        if (is_file($targetPath)) {
+            return new Response(
+                200,
+                ['Content-Type' => mime_content_type($targetPath)],
+                new ReadableResourceStream(fopen($targetPath, 'r'), $this->loop)
+            );
+        }
+    }
+
+    protected function isValidTarget(string $targetPath): bool
+    {
+        if (! file_exists($targetPath)) {
+            return false;
+        }
+
+        if ($this->name !== '') {
+            $filter = new class(basename($targetPath), [$this->name]) extends FilenameFilterIterator {
+                protected $filename;
+
+                public function __construct(string $filename, array $matchPatterns)
+                {
+                    $this->filename = $filename;
+
+                    foreach ($matchPatterns as $pattern) {
+                        $this->matchRegexps[] = $this->toRegex($pattern);
+                    }
+                }
+
+                public function accept()
+                {
+                    return $this->isAccepted($this->filename);
+                }
+            };
+            return $filter->accept();
+        }
+
+        return true;
+    }
+
+    protected function createLaravelRequest(ServerRequestInterface $request): Request
+    {
+        try {
+            parse_str($request->getBody(), $bodyParameters);
+        } catch (\Throwable $e) {
+            $bodyParameters = [];
+        }
+
+        $serverRequest = (new ServerRequest(
+            $request->getMethod(),
+            $request->getUri(),
+            $request->getHeaders(),
+            $request->getBody(),
+            $request->getProtocolVersion(),
+        ))
+            ->withQueryParams(QueryParameters::create($request)->all())
+            ->withParsedBody($bodyParameters);
+
+        return Request::createFromBase((new HttpFoundationFactory)->createRequest($serverRequest));
+    }
+}

app/Client/Fileserver/Fileserver.php

@@ -0,0 +1,31 @@
+<?php
+
+namespace App\Client\Fileserver;
+
+use Psr\Http\Message\ServerRequestInterface;
+use React\EventLoop\LoopInterface;
+use React\Http\Response;
+use React\Http\Server;
+use React\Socket\Server as SocketServer;
+
+class Fileserver
+{
+    /** @var SocketServer */
+    protected $socket;
+
+    public function __construct($rootFolder, $name, $port, $address, LoopInterface $loop)
+    {
+        $server = new Server(function (ServerRequestInterface $request) use ($rootFolder, $name, $loop) {
+            return (new ConnectionHandler($rootFolder, $name, $loop))->handle($request);
+        });
+
+        $this->socket = new SocketServer("{$address}:{$port}", $loop);
+
+        $server->listen($this->socket);
+    }
+
+    public function getSocket(): SocketServer
+    {
+        return $this->socket;
+    }
+}

app/Commands/ShareFilesCommand.php

@@ -0,0 +1,48 @@
+<?php
+
+namespace App\Commands;
+
+use App\Client\Factory;
+use App\Logger\CliRequestLogger;
+use LaravelZero\Framework\Commands\Command;
+use React\EventLoop\LoopInterface;
+use Symfony\Component\Console\Output\ConsoleOutput;
+
+class ShareFilesCommand extends Command
+{
+    protected $signature = 'share-files {folder=.} {--name=} {--subdomain=} {--auth=}';
+
+    protected $description = 'Share a local folder with a remote expose server';
+
+    protected function configureConnectionLogger()
+    {
+        app()->bind(CliRequestLogger::class, function () {
+            return new CliRequestLogger(new ConsoleOutput());
+        });
+
+        return $this;
+    }
+
+    public function handle()
+    {
+        if ( !is_dir($this->argument('folder'))) {
+            throw new \InvalidArgumentException('The folder '.$this->argument('folder').' does not exist.');
+        }
+
+        $this->configureConnectionLogger();
+
+        (new Factory())
+            ->setLoop(app(LoopInterface::class))
+            ->setHost(config('expose.host', 'localhost'))
+            ->setPort(config('expose.port', 8080))
+            ->setAuth($this->option('auth'))
+            ->createClient()
+            ->shareFolder(
+                $this->argument('folder'),
+                $this->option('name') ?? '',
+                explode(',', $this->option('subdomain'))
+            )
+            ->createHttpServer()
+            ->run();
+    }
+}

app/Http/Controllers/Concerns/LoadsViews.php

@@ -9,7 +9,7 @@ use Twig\Loader\ArrayLoader;
 
 trait LoadsViews
 {
-    protected function getView(ConnectionInterface $connection, string $view, array $data = [])
+    protected function getView(?ConnectionInterface $connection, string $view, array $data = [])
     {
         $templatePath = implode(DIRECTORY_SEPARATOR, explode('.', $view));
 
@@ -23,7 +23,10 @@ trait LoadsViews
         $data = array_merge($data, [
             'request' => $connection->laravelRequest ?? null,
         ]);
-
+try {
         return stream_for($twig->render('template', $data));
+} catch (\Throwable $e) {
+    var_dump($e->getMessage());
+}
     }
 }