150 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			PHP
		
	
	
	
			
		
		
	
	
			150 lines
		
	
	
		
			3.9 KiB
		
	
	
	
		
			PHP
		
	
	
	
| <?php
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| 
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| namespace BookStack\Http\Controllers;
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| 
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| use BookStack\Ownable;
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| use Illuminate\Foundation\Bus\DispatchesJobs;
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| use Illuminate\Http\Exceptions\HttpResponseException;
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| use Illuminate\Http\Request;
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| use Illuminate\Routing\Controller as BaseController;
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| use Illuminate\Foundation\Validation\ValidatesRequests;
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| use BookStack\User;
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| 
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| abstract class Controller extends BaseController
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| {
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|     use DispatchesJobs, ValidatesRequests;
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| 
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|     /**
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|      * @var User static
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|      */
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|     protected $currentUser;
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|     /**
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|      * @var bool
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|      */
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|     protected $signedIn;
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| 
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|     /**
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|      * Controller constructor.
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|      */
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|     public function __construct()
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|     {
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|         $this->middleware(function ($request, $next) {
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| 
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|             // Get a user instance for the current user
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|             $user = user();
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| 
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|             // Share variables with controllers
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|             $this->currentUser = $user;
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|             $this->signedIn = auth()->check();
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| 
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|             // Share variables with views
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|             view()->share('signedIn', $this->signedIn);
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|             view()->share('currentUser', $user);
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| 
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|             return $next($request);
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|         });
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|     }
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| 
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|     /**
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|      * Stops the application and shows a permission error if
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|      * the application is in demo mode.
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|      */
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|     protected function preventAccessForDemoUsers()
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|     {
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|         if (config('app.env') === 'demo') $this->showPermissionError();
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|     }
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| 
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|     /**
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|      * Adds the page title into the view.
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|      * @param $title
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|      */
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|     public function setPageTitle($title)
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|     {
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|         view()->share('pageTitle', $title);
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|     }
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| 
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|     /**
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|      * On a permission error redirect to home and display.
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|      * the error as a notification.
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|      */
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|     protected function showPermissionError()
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|     {
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|         if (request()->wantsJson()) {
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|             $response = response()->json(['error' => trans('errors.permissionJson')], 403);
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|         } else {
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|             $response = redirect('/');
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|             session()->flash('error', trans('errors.permission'));
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|         }
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| 
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|         throw new HttpResponseException($response);
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|     }
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| 
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|     /**
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|      * Checks for a permission.
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|      * @param string $permissionName
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|      * @return bool|\Illuminate\Http\RedirectResponse
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|      */
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|     protected function checkPermission($permissionName)
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|     {
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|         if (!user() || !user()->can($permissionName)) {
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|             $this->showPermissionError();
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|         }
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|         return true;
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|     }
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| 
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|     /**
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|      * Check the current user's permissions against an ownable item.
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|      * @param $permission
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|      * @param Ownable $ownable
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|      * @return bool
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|      */
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|     protected function checkOwnablePermission($permission, Ownable $ownable)
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|     {
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|         if (userCan($permission, $ownable)) return true;
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|         return $this->showPermissionError();
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|     }
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| 
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|     /**
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|      * Check if a user has a permission or bypass if the callback is true.
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|      * @param $permissionName
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|      * @param $callback
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|      * @return bool
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|      */
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|     protected function checkPermissionOr($permissionName, $callback)
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|     {
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|         $callbackResult = $callback();
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|         if ($callbackResult === false) $this->checkPermission($permissionName);
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|         return true;
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|     }
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| 
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|     /**
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|      * Send back a json error message.
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|      * @param string $messageText
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|      * @param int $statusCode
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|      * @return mixed
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|      */
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|     protected function jsonError($messageText = "", $statusCode = 500)
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|     {
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|         return response()->json(['message' => $messageText], $statusCode);
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|     }
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| 
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|     /**
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|      * Create the response for when a request fails validation.
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|      *
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|      * @param  \Illuminate\Http\Request  $request
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|      * @param  array  $errors
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|      * @return \Symfony\Component\HttpFoundation\Response
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|      */
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|     protected function buildFailedValidationResponse(Request $request, array $errors)
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|     {
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|         if ($request->expectsJson()) {
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|             return response()->json(['validation' => $errors], 422);
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|         }
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| 
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|         return redirect()->to($this->getRedirectUrl())
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|             ->withInput($request->input())
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|             ->withErrors($errors, $this->errorBag());
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|     }
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| 
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| }
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