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<?php |
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namespace SOG\Dashboard\Authentication; |
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use SOG\Dashboard\LdapAdapter; |
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use Symfony\Component\Security\Core\Exception\UsernameNotFoundException; |
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use Symfony\Component\Security\Core\User\UserInterface; |
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use Symfony\Component\Security\Core\User\UserProviderInterface; |
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use Zend\Ldap\Exception\LdapException; |
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use Zend\Ldap\Ldap; |
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/** |
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* This class maps a requested user to its LDAP entry. |
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* The implementation follows https://github.com/DerManoMann/ldap-auth-service-provider - thank you! |
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* |
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* Class LdapUserProvider |
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* @package SOG\Dashboard\Authentication |
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*/ |
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class LdapUserProvider implements UserProviderInterface |
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{ |
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/** |
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* @var LdapAdapter The LDAP resource |
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*/ |
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private $ldap; |
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public function __construct(LdapAdapter $ldap) |
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{ |
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$this->ldap = $ldap; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function refreshUser(UserInterface $user) |
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{ |
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// This could be implemented in a different manner (session?) to reduce server load |
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return $this->loadUserByUsername($user->getUsername()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function loadUserByUsername($username) |
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{ |
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try { |
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// first retrieve the full DN, this might throw an exception |
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$dn = $this->ldap->getCanonicalAccountName($username, LDAP::ACCTNAME_FORM_DN); |
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// then get all associated attributes |
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$attributes = $this->ldap->getEntry($dn); |
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// also get the groups the user is member of |
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$memberships = $this->ldap->getMemberships($dn, ['cn', 'ou', 'mailinglistId'])->toArray(); |
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// and maybe the owned groups |
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$ownerships = $this->ldap->getOwnedGroups($dn)->toArray(); |
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// assign the user's roles |
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$roles = $this->getRoles($dn, $ownerships); |
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return new LdapUser($username, null, $attributes, $roles, $memberships, $ownerships); |
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} catch (LdapException $ex) { |
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throw new UsernameNotFoundException($ex->getMessage().'Der Login war nicht erfolgreich, bitte überprüfe deinen Benutzernamen und Passwort.'); |
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$logger = $this->get('logger'); |
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$logger->error(($ex->getMessage())); |
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} |
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} |
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/** |
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* Infer the rules of the given user by checking the LDAP resource. This can be extended to accommodate for |
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* ROLE_ADMIN or other cases |
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* |
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* @param string $user_dn The user DN for which to infer the rules |
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* @param array $ownerships The owned groups for the user DN |
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* @return array The roles of the given user |
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*/ |
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private function getRoles($user_dn, $ownerships) |
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{ |
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$roles = []; |
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if (count($ownerships) > 0) { |
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$roles[] = 'ROLE_GROUP_ADMIN'; |
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} else { |
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$roles[] = 'ROLE_USER'; |
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} |
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return $roles; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function supportsClass($class) |
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{ |
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return ($class === '\\SOG\\Dashboard\\Authentication\\LdapUser'); |
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} |
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} |
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If a method or function can return multiple different values and unless you are sure that you only can receive a single value in this context, we recommend to add an additional type check:
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