134 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			PHP
		
	
	
	
			
		
		
	
	
			134 lines
		
	
	
		
			3.4 KiB
		
	
	
	
		
			PHP
		
	
	
	
<?php
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namespace BookStack\Http\Controllers;
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use BookStack\Ownable;
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use HttpRequestException;
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use Illuminate\Foundation\Bus\DispatchesJobs;
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use Illuminate\Http\Exception\HttpResponseException;
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use Illuminate\Routing\Controller as BaseController;
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use Illuminate\Foundation\Validation\ValidatesRequests;
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use Illuminate\Support\Facades\Auth;
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use Illuminate\Support\Facades\Session;
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use BookStack\User;
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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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     * @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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     * 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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            // Get a user instance for the current user
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            $user = user();
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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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            // 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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            return $next($request);
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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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     * 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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     * 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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            $response = redirect('/');
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            session()->flash('error', trans('errors.permission'));
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        }
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        throw new HttpResponseException($response);
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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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     * 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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     * 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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     * 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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