4.2.1. Configuration¶

The security handler is required to determine which type of security to use. In case of using ACL you MUST set acl_user_manager parameter, the other other ones are set as default, change them if needed.

Using roles:

Using ACL:

Later, we will explain how to set up ACL with the FriendsOfSymfony/UserBundle.

4.3.1. Configuration¶

First, activate the role security handler as described above.

Each time a user tries to do an action in the admin, Sonata checks if he is either a super admin (ROLE_SUPER_ADMIN or the role specified in the configuration) or has the permission.

The permissions are:

Each permission is relative to an admin: if you try to get a list in FooAdmin (declared as app.admin.foo service), Sonata will check if the user has the ROLE_APP_ADMIN_FOO_EDIT or ROLE_APP_ADMIN_FOO_ALL roles.

The role name will be based on the name of your admin service.

So our security.yaml file may look something like this:

Note that we also set access_strategy to unanimous. It means that if one voter (for example Sonata) refuses access, access will be denied. For more information on this subject, please see changing the access decision strategy in the Symfony documentation.

4.3.2. Usage¶

You can now test if a user is authorized from an Admin class:

if ($this->hasAccess('list')) {
    // ...
}

From a controller extending Sonata\AdminBundle\Controller\CRUDController:

if ($this->admin->hasAccess('list')) {
    // ...
}

Or from a Twig template:

{% if admin.hasAccess('list') %}
    {# ... #}
{% endif %}

Note that you do not have to re-specify the prefix.

Sonata checks those permissions for the action it handles internally. Of course you will have to recheck them in your own code.

Yon can also create your own permissions, for example EMAIL (which will turn into role ROLE_APP_ADMIN_FOO_EMAIL).

4.3.3. Going further¶

Because Sonata role handler supplements Symfony security, but does not override it, you are free to do more advanced operations. For example, you can create your own voter

4.3.4. Customizing the handler behavior¶

If you want to change the handler behavior (for example, to pass the current object to voters), extend Sonata\AdminBundle\Security\Handler\RoleSecurityHandler, and override the isGranted method.

Then declare your handler as a service:

And specify it as Sonata security handler on your configuration:

4.4.1. Configuration¶

Before you can use FriendsOfSymfony/FOSUserBundle you need to set it up as described in the documentation of the bundle. In step 4 you need to create a User class (in a custom UserBundle). Do it as follows:

// src/Entity/User.php

namespace App\Entity;

use Sonata\UserBundle\Entity\BaseUser as BaseUser;
use Doctrine\ORM\Mapping as ORM;

/**
 * @ORM\Entity
 * @ORM\Table(name="fos_user")
 */
class User extends BaseUser
{
    /**
     * @ORM\Id
     * @ORM\Column(type="integer")
     * @ORM\GeneratedValue(strategy="AUTO")
     */
    protected $id;

    public function __construct()
    {
        parent::__construct();
        // your own logic
    }
}

If you are going to use ACL, you must create a service implementing SonataAdminBundleUtilAdminAclUserManagerInterface:

namespace App\Manager;

use FOS\UserBundle\Model\UserManagerInterface;
use Sonata\AdminBundle\Util\AdminAclUserManagerInterface;

final class AclUserManager implements AdminAclUserManagerInterface
{
    /**
     * @var UserManagerInterface
     */
    private $userManager;

    public function __construct(UserManagerInterface $userManager)
    {
        $this->userManager = $userManager;
    }

    public function findUsers(): iterable
    {
        return $this->userManager->findUsers();
    }
}

and then configure SonataAdminBundle:

In your config/packages/fos_user.yaml you then need to put the following:

The following configuration for the SonataUserBundle defines:

• the FriendsOfSymfony/FOSUserBundle as a security provider
• the login form for authentication
• the access control: resources with related required roles, the important part is the admin configuration
• the acl option to enable the ACL
• the AdminPermissionMap defines the permissions of the Admin class

In config/packages/security.yaml:

• Install the ACL tables bin/console init:acl
• Create a new root user:

bin/console fos:user:create --super-admin
    Please choose a username:root
    Please choose an email:[email protected]
    Please choose a password:root
    Created user root

If you have Admin classes, you can install or update the related CRUD ACL rules:

bin/console sonata:admin:setup-acl
Starting ACL AdminBundle configuration
> install ACL for sonata.media.admin.media
   - add role: ROLE_SONATA_MEDIA_ADMIN_MEDIA_GUEST, permissions: ["VIEW","LIST"]
   - add role: ROLE_SONATA_MEDIA_ADMIN_MEDIA_STAFF, permissions: ["EDIT","LIST","CREATE"]
   - add role: ROLE_SONATA_MEDIA_ADMIN_MEDIA_EDITOR, permissions: ["OPERATOR","EXPORT"]
   - add role: ROLE_SONATA_MEDIA_ADMIN_MEDIA_ADMIN, permissions: ["MASTER"]
... skipped ...

If you already have objects, you can generate the object ACL rules for each object of an admin:

bin/console sonata:admin:generate-object-acl

Optionally, you can specify an object owner, and step through each admin. See the help of the command for more information.

If you try to access to the admin class you should see the login form, log in with the root user.

An Admin is displayed in the dashboard (and menu) when the user has the role LIST. To change this override the showIn method in the Admin class.

4.4.2. Roles and Access control lists¶

A user can have several roles when working with an application. Each Admin class has several roles, and each role specifies the permissions of the user for the Admin class. Or more specifically, what the user can do with the domain object(s) the Admin class is created for.

By default each Admin class contains the following roles, override the property $securityInformation to change this:

• ROLE_SONATA_..._GUEST

  a guest that is allowed to VIEW an object and a LIST of objects;

• ROLE_SONATA_..._STAFF

  probably the biggest part of the users, a staff user has the same permissions as guests and is additionally allowed to EDIT and CREATE new objects;

• ROLE_SONATA_..._EDITOR

  an editor is granted all access and, compared to the staff users, is allowed to DELETE;

• ROLE_SONATA_..._ADMIN

  an administrative user is granted all access and on top of that, the user is allowed to grant other users access.

Owner:

• when an object is created, the currently logged in user is set as owner for that object and is granted all access for that object;
• this means the user owning the object is always allowed to DELETE the object, even when they only have the staff role.

Vocabulary used for Access Control Lists:

• Role: a user role;

• ACL: a list of access rules, the Admin uses 2 types;

• Admin ACL: created from the Security information of the Admin class for each admin and shares the Access Control Entries that specify what the user can do (permissions) with the admin;

• Object ACL: also created from the security information of the Admin class however created for each object, it uses 2 scopes:

  • Class-Scope: the class scope contains the rules that are valid for all object of a certain class;
  • Object-Scope: specifies the owner;

• Sid: Security identity, an ACL role for the Class-Scope ACL and the user for the Object-Scope ACL;

• Oid: Object identity, identifies the ACL, for the admin ACL this is the admin code, for the object ACL this is the object id;

• ACE: a role (or sid) and its permissions;

• Permission: this tells what the user is allowed to do with the Object identity;

• Bitmask: a permission can have several bitmasks, each bitmask represents a permission. When permission VIEW is requested and it contains the VIEW and EDIT bitmask and the user only has the EDIT permission, then the permission VIEW is granted.

• PermissionMap: configures the bitmasks for each permission, to change the default mapping create a voter for the domain class of the Admin.

  There can be many voters that may have different permission maps. However, prevent that multiple voters vote on the same class with overlapping bitmasks.

See the cookbook article “Advanced ACL concepts” for the meaning of the different permissions.

4.4.3. How is access granted?¶

In the application the security context is asked if access is granted for a role or a permission (admin.isGranted):

• Token: a token identifies a user between requests;
• Voter: sort of judge that returns whether access is granted or denied, if the voter should not vote for a case, it returns abstain;
• AccessDecisionManager: decides whether access is granted or denied according a specific strategy. It grants access if at least one (affirmative strategy), all (unanimous strategy) or more then half (consensus strategy) of the counted votes granted access;
• RoleVoter: votes for all attributes stating with ROLE_ and grants access if the user has this role;
• RoleHierarchyVoter: when the role ROLE_SONATA_ADMIN (or the role specified in the configuration) is voted for, it also votes “granted” if the user has the role ROLE_SUPER_ADMIN;
• AclVoter: grants access for the permissions of the Admin class if the user has the permission, the user has a permission that is included in the bitmasks of the permission requested to vote for or the user owns the object.

4.4.4. Create a custom voter or a custom permission map¶

In some occasions you need to create a custom voter or a custom permission map because for example you want to restrict access using extra rules:

• create a custom voter class that extends the AclVoter:

  // src/Security/Authorization/Voter/UserAclVoter.php
  
  namespace App\Security\Authorization\Voter;
  
  use FOS\UserBundle\Model\UserInterface;
  use Symfony\Component\Security\Core\Authentication\Token\TokenInterface;
  use Symfony\Component\Security\Acl\Voter\AclVoter;
  
  class UserAclVoter extends AclVoter
  {
      public function supportsClass($class)
      {
          // support the Class-Scope ACL for votes with the custom permission map
          // return $class === 'Sonata\UserBundle\Admin\Entity\UserAdmin' || is_subclass_of($class, 'FOS\UserBundle\Model\UserInterface');
          // if you use php >=5.3.7 you can check the inheritance with is_a($class, 'Sonata\UserBundle\Admin\Entity\UserAdmin');
          // support the Object-Scope ACL
          return is_subclass_of($class, 'FOS\UserBundle\Model\UserInterface');
      }
  
      public function supportsAttribute($attribute)
      {
          return $attribute === 'EDIT' || $attribute === 'DELETE';
      }
  
      public function vote(TokenInterface $token, $object, array $attributes)
      {
          if (!$this->supportsClass(get_class($object))) {
              return self::ACCESS_ABSTAIN;
          }
  
          foreach ($attributes as $attribute) {
              if ($this->supportsAttribute($attribute) && $object instanceof UserInterface) {
                  if ($object->isSuperAdmin() && !$token->getUser()->isSuperAdmin()) {
                      // deny a non super admin user to edit a super admin user
                      return self::ACCESS_DENIED;
                  }
              }
          }
  
          // use the parent vote with the custom permission map:
          // return parent::vote($token, $object, $attributes);
          // otherwise leave the permission voting to the AclVoter that is using the default permission map
          return self::ACCESS_ABSTAIN;
      }
  }
  

• optionally create a custom permission map, copy to start the Sonata\AdminBundle\Security\Acl\Permission\AdminPermissionMap.php to your bundle

• declare the voter and permission map as a service

• change the access decision strategy to unanimous

• to make this work the permission needs to be checked using the Object ACL
  • modify the template (or code) where applicable:

  {% if admin.hasAccess('edit', user_object) %}
      {# ... #}
  {% endif %}

- because the object ACL permission is checked, the ACL for the object must
  have been created, otherwise the ``AclVoter`` will deny ``EDIT`` access
  for a non super admin user trying to edit another non super admin user.
  This is automatically done when the object is created using the Admin.
  If objects are also created outside the Admin, have a look at the
  ``createSecurityObject`` method in the ``AclSecurityHandler``.

4.4.5. Usage¶

Every time you create a new Admin class, you should start with the command bin/console sonata:admin:setup-acl so the ACL database will be updated with the latest roles and permissions.

In the templates, or in your code, you can use the Admin method hasAccess():

• check for an admin that the user is allowed to EDIT:

{# use the admin security method  #}
{% if admin.hasAccess('edit') %}
    {# ... #}
{% endif %}

{# or use the default is_granted Symfony helper, the following will give the same result #}
{% if is_granted('ROLE_SUPER_ADMIN') or is_granted('EDIT', admin) %}
    {# ... #}
{% endif %}

• check for an admin that the user is allowed to DELETE, the object is added to also check if the object owner is allowed to DELETE:

{# use the admin security method  #}
{% if admin.hasAccess('delete', object) %}
    {# ... #}
{% endif %}

{# or use the default is_granted Symfony helper, the following will give the same result #}
{% if is_granted('ROLE_SUPER_ADMIN') or is_granted('DELETE', object) %}
    {# ... #}
{% endif %}

4.4.6. List filtering¶

List filtering using ACL is available as a third party bundle: CoopTilleulsAclSonataAdminExtensionBundle. When enabled, the logged in user will only see the objects for which it has the VIEW right (or superior).

4.5.1. User list customization¶

By default, the ACL editor allows to set permissions for all users managed by FOSUserBundle.

To customize displayed user override Sonata\AdminBundle\Controller\CRUDController::getAclUsers(). This method must return an iterable collection of users:

protected function getAclUsers()
{
    $userManager = $container->get('fos_user.user_manager');

    // Display only kevin and anne
    $users[] = $userManager->findUserByUsername('kevin');
    $users[] = $userManager->findUserByUsername('anne');

    return new \ArrayIterator($users);
}

4.5.2. Role list customization¶

By default, the ACL editor allows to set permissions for all roles.

To customize displayed role override Sonata\AdminBundle\Controller\CRUDController::getAclRoles(). This method must return an iterable collection of roles:

protected function getAclRoles()
{
    // Display only ROLE_BAPTISTE and ROLE_HELENE
    $roles = [
        'ROLE_BAPTISTE',
        'ROLE_HELENE'
    ];

    return new \ArrayIterator($roles);
}