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allow using any ldap property as login name when using login credentials #24955

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merged 1 commit into from
Jan 7, 2021
Merged

allow using any ldap property as login name when using login credentials #24955

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40 changes: 38 additions & 2 deletions apps/files_external/lib/Lib/Auth/Password/LoginCredentials.php
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Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,7 @@
use OCA\Files_External\Lib\InsufficientDataForMeaningfulAnswerException;
use OCA\Files_External\Lib\StorageConfig;
use OCA\Files_External\Listener\StorePasswordListener;
use OCA\User_LDAP\IUserLDAP;
use OCP\Authentication\Exceptions\CredentialsUnavailableException;
use OCP\Authentication\LoginCredentials\IStore as CredentialsStore;
use OCP\EventDispatcher\IEventDispatcher;
Expand Down Expand Up @@ -81,7 +82,7 @@ private function getCredentials(IUser $user): array {

$credentials = [
'user' => $sessionCredentials->getLoginName(),
'password' => $sessionCredentials->getPassword()
'password' => $sessionCredentials->getPassword(),
];

$this->credentialsManager->store($user->getUID(), self::CREDENTIALS_IDENTIFIER, $credentials);
Expand All @@ -99,7 +100,42 @@ public function manipulateStorageConfig(StorageConfig &$storage, IUser $user = n
}
$credentials = $this->getCredentials($user);

$storage->setBackendOption('user', $credentials['user']);
$loginKey = $storage->getBackendOption("login_ldap_attr");
if ($loginKey) {
$backend = $user->getBackend();
if ($backend instanceof IUserLDAP) {
$value = $this->getLdapPropertyForUser($backend, $user, $loginKey);
if ($value === null) {
throw new InsufficientDataForMeaningfulAnswerException('Custom ldap attribute not set for user ' . $user->getUID());
}
$storage->setBackendOption('user', $value);
} else {
throw new InsufficientDataForMeaningfulAnswerException('Custom ldap attribute configured but user ' . $user->getUID() . ' is not an ldap user');
}
} else {
$storage->setBackendOption('user', $credentials['user']);
}
$storage->setBackendOption('password', $credentials['password']);
}

private function getLdapPropertyForUser(IUserLDAP $ldap, IUser $user, string $property): ?string {
$access = $ldap->getLDAPAccess($user->getUID());
$connection = $access->getConnection();
$key = "external_login::" . $user->getUID() . "::" . $property;
$cached = $connection->getFromCache($key);

if ($cached !== null) {
return $cached;
}

$value = $access->readAttribute($access->username2dn($user->getUID()), $property);
if (count($value) > 0) {
$value = current($value);
} else {
return null;
}
$connection->writeToCache($key, $value);
Comment on lines +122 to +137
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I'd prefer it would use \OCP\ILDAPProvider (via its factory) instead of using private user_ldap classes. https://github.com/nextcloud/server/tree/master/lib/public/LDAP


return $value;
}
}