How to use simple roles for authorization in application?

5 years ago

chemix
Bronze Partner | 955
+
0
-

What i want to use?

I want use roles for a simple application access.

<?php
...
    if ($user->isInRole('photograph')){
       // can upload images
    }

    if ($user->isInRole('supervisor')){
       // can public article
    }
...
?>

is this good way? or bad way? I want use the simplest way :)

How i setup config and authenticator

services:
    authenticator: Authenticator
    authorizator:
        class: Nette\Security\Permission
        setup:
            - addRole('user')
            - addRole('photograph', 'user')
            - addRole('writer', 'photograph')
            - addRole('supervisor', 'writer')
            - addRole('adsmanager', 'supervisor')
            - addRole('admin', 'adsmanager')
            - addRole('root', 'admin')

from authenticate method:

<?php
...
$arr = $row->toArray();
unset($arr['password']);
return new Nette\Security\Identity($row->id, $row->role, $arr);
...
?>

Problem

i hope i get all roles for user chemix, ex. if chemix is in role admin (db row: username ⇒ chemix, role ⇒ admin) i expect that has also roles adsmanager, supervisor,…

but this dump said no :-(

<?php
class DashboardPresenter extends BasePresenter {

    /**
     * @var \Nette\Security\IAuthorizator @inject
     */
    var $auth;

    public function renderDefault()
    {
        dump($this->auth->getRoles());
        echo '-';
        dump($this->user->getRoles());
        echo '-';
        dump($this->user->isInRole('root'));
        dump($this->user->isInRole('admin'));
        dump($this->user->isInRole('adsmanager'));
        dump($this->user->isInRole('supervisor'));
        dump($this->user->isInRole('writer'));
        dump($this->user->isInRole('photograph'));
        dump($this->user->isInRole('user'));
    }
}
?>

returns

array (7)
0 => "user" (4)
1 => "photograph" (10)
2 => "writer" (6)
3 => "supervisor" (10)
4 => "adsmanager" (10)
5 => "admin" (5)
6 => "root" (4)
-
array (1)
0 => "admin" (5)
-
FALSE
TRUE
FALSE
FALSE
FALSE
FALSE
FALSE

is this behaviour correct?, and only i don't understand how to us it? or is it fault?

(tested on Nette 2.1.0-RC4)

5 years ago

enumag
Member | 2128
+
0
-

The roles in Permission are all roles that can be used in the application. However which roles the current user has depends on what roles you give him in your authenticator when you're creating the Identity.

return new Nette\Security\Identity($row->id, $row->role, $arr); // $row->role is probably just a string "admin"

Last edited by enumag (2013-12-20 11:53)

5 years ago

chemix
Bronze Partner | 955
+
0
-

Thanks. I mixed two different things, Identity and Permissions. Now i know that Identity has no idea about Permissions, and roles inheritance works only with Permissions.

So how i resolve my task? There is two possibilities.

Simple way (but maybe not the right way :-)

i changed enum column to set, for specify more roles for user. And update code for new Identity

<?php
...
$arr = $row->toArray();
unset($arr['password']);
return new Nette\Security\Identity($row->id, explode(',',$row->role), $arr);
...
?>

now i have in db (db row: username => chemix, role => "admin,user,photograph,writer,supervisor,adsmanager")

i removed authorizator section from config

and dump is

<?php
class DashboardPresenter extends BasePresenter {

    public function renderDefault()
    {
        dump($this->user->getRoles());
        echo '-';
        dump($this->user->isInRole('root'));
        dump($this->user->isInRole('admin'));
        dump($this->user->isInRole('adsmanager'));
        dump($this->user->isInRole('supervisor'));
        dump($this->user->isInRole('writer'));
        dump($this->user->isInRole('photograph'));
        dump($this->user->isInRole('user'));

    }
}
?>
array (6)
0 => "admin" (5)
1 => "adsmanager" (10)
2 => "supervisor" (10)
3 => "writer" (6)
4 => "photograph" (10)
5 => "user" (4)
-
FALSE
TRUE
TRUE
TRUE
TRUE
TRUE
TRUE

it's work :) maybe dirty way, but works

second way is

Use Permissions (better, but not harder ;-)

database scheme

CREATE TABLE `users` (
  `id` int(10) unsigned NOT NULL AUTO_INCREMENT,
  `username` varchar(255) NOT NULL,
  `salt` char(32) NOT NULL,
  `password` char(64) NOT NULL,
  `email` varchar(255) NOT NULL,
  `role` enum('root','admin','adsmanager','supervisor','writer','photograph','user') NOT NULL DEFAULT 'user',
  PRIMARY KEY (`id`),
  UNIQUE KEY `username` (`username`),
  UNIQUE KEY `email` (`email`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8;

config.neon

services:
    authenticator: Authenticator
    authorizator:
        class: Nette\Security\Permission
        setup:
            - addRole('user')
            - addRole('photograph', 'user')
            - addRole('writer', 'photograph')
            - addRole('supervisor', 'writer')
            - addRole('adsmanager', 'supervisor')
            - addRole('admin', 'adsmanager')
            - addRole('root', 'admin')
            - addResource('Ads')
            - addResource('Photos')
            - addResource('Articles')
            - addResource('Users')
            - allow('adsmanager', 'Ads', 'view')
            - allow('adsmanager', 'Ads', 'add')
            - allow('adsmanager', 'Ads', 'edit')
            - allow('photograph', 'Photos', 'add')
            - allow('writer', 'Articles', 'view')
            - allow('writer', 'Articles', 'add')
            - allow('supervisor', 'Articles', 'publish')
            - allow('admin', 'Users', 'view')
            - allow('admin', 'Users', 'add')

Authenticator

<?php
...
$arr = $row->toArray();
unset($arr['password']);
return new Nette\Security\Identity($row->id, $row->role, $arr);
...
?>

and tests

<?php
class DashboardPresenter extends BasePresenter {

    public function renderDefault()
    {
        dump($this->user->isAllowed('Photos', 'add'));
        dump($this->user->isAllowed('Articles', 'publish'));
        dump($this->user->isAllowed('Ads', 'view'));
        dump($this->user->isAllowed('Ads', 'add'));
        dump($this->user->isAllowed('Users', 'add'));

    }
}
?>

returns for user = chemix with role = adsmanager

TRUE
TRUE
TRUE
TRUE
FALSE

wow, amazing :) the inherittence works perfect, and it's more powerful and open for future that only asking for a user role.

Once again thanks to enumag and his help on jabber and his comment https://forum.nette.org/…-permissions#…

5 years ago

enumag
Member | 2128
+
0
-

I'd like to recommend you one more think. I don't think its good to set this up in the config file because you can't have the rules stored in database and you can't use permission assertion callbacks. I recommend using this: https://forum.nette.org/…zace-pouziti#….