X-Git-Url: http://source.bookstackapp.com/bookstack/blobdiff_plain/0513239c25dcddf696ad9171f167295fa93661e9..refs/pull/63/head:/app/Http/Controllers/Controller.php

diff --git a/app/Http/Controllers/Controller.php b/app/Http/Controllers/Controller.php
index 48a58ca99..ab37a44a1 100644
--- a/app/Http/Controllers/Controller.php
+++ b/app/Http/Controllers/Controller.php
@@ -1,28 +1,103 @@
 <?php
 
-namespace Oxbow\Http\Controllers;
+namespace BookStack\Http\Controllers;
 
+use HttpRequestException;
 use Illuminate\Foundation\Bus\DispatchesJobs;
+use Illuminate\Http\Exception\HttpResponseException;
 use Illuminate\Routing\Controller as BaseController;
 use Illuminate\Foundation\Validation\ValidatesRequests;
 use Illuminate\Support\Facades\Auth;
-use Oxbow\User;
+use Illuminate\Support\Facades\Session;
+use BookStack\User;
 
 abstract class Controller extends BaseController
 {
     use DispatchesJobs, ValidatesRequests;
 
+    /**
+     * @var User static
+     */
+    protected $currentUser;
+    /**
+     * @var bool
+     */
+    protected $signedIn;
+
     /**
      * Controller constructor.
      */
     public function __construct()
     {
-        view()->share('signedIn', Auth::check());
-        $user = Auth::user();
-        if(!$user) {
-            $user = User::getDefault();
+        // Get a user instance for the current user
+        $user = auth()->user();
+        if (!$user) $user = User::getDefault();
+
+        // Share variables with views
+        view()->share('signedIn', auth()->check());
+        view()->share('currentUser', $user);
+
+        // Share variables with controllers
+        $this->currentUser = $user;
+        $this->signedIn = auth()->check();
+    }
+
+    /**
+     * Stops the application and shows a permission error if
+     * the application is in demo mode.
+     */
+    protected function preventAccessForDemoUsers()
+    {
+        if (config('app.env') === 'demo') $this->showPermissionError();
+    }
+
+    /**
+     * Adds the page title into the view.
+     * @param $title
+     */
+    public function setPageTitle($title)
+    {
+        view()->share('pageTitle', $title);
+    }
+
+    /**
+     * On a permission error redirect to home and display
+     * the error as a notification.
+     */
+    protected function showPermissionError()
+    {
+        Session::flash('error', trans('errors.permission'));
+        throw new HttpResponseException(
+            redirect('/')
+        );
+    }
+
+    /**
+     * Checks for a permission.
+     *
+     * @param $permissionName
+     * @return bool|\Illuminate\Http\RedirectResponse
+     */
+    protected function checkPermission($permissionName)
+    {
+        if (!$this->currentUser || !$this->currentUser->can($permissionName)) {
+            $this->showPermissionError();
         }
-        view()->share('user', $user);
+
+        return true;
+    }
+
+    /**
+     * Check if a user has a permission or bypass if the callback is true.
+     * @param $permissionName
+     * @param $callback
+     * @return bool
+     */
+    protected function checkPermissionOr($permissionName, $callback)
+    {
+        $callbackResult = $callback();
+        if ($callbackResult === false) $this->checkPermission($permissionName);
+        return true;
     }
 
 }