BookStack/app/Auth/Access/Guards/LdapSessionGuard.php
2020-02-02 10:59:03 +00:00

143 lines
4.3 KiB
PHP

<?php
namespace BookStack\Auth\Access\Guards;
use BookStack\Auth\Access\LdapService;
use BookStack\Auth\User;
use BookStack\Auth\UserRepo;
use BookStack\Exceptions\LdapException;
use BookStack\Exceptions\LoginAttemptException;
use BookStack\Exceptions\LoginAttemptEmailNeededException;
use Illuminate\Contracts\Auth\UserProvider;
use Illuminate\Contracts\Session\Session;
class LdapSessionGuard extends ExternalBaseSessionGuard
{
protected $ldapService;
/**
* LdapSessionGuard constructor.
*/
public function __construct($name,
UserProvider $provider,
Session $session,
LdapService $ldapService,
UserRepo $userRepo
)
{
$this->ldapService = $ldapService;
parent::__construct($name, $provider, $session, $userRepo);
}
/**
* Validate a user's credentials.
*
* @param array $credentials
* @return bool
* @throws LdapException
*/
public function validate(array $credentials = [])
{
$userDetails = $this->ldapService->getUserDetails($credentials['username']);
$this->lastAttempted = $this->provider->retrieveByCredentials([
'external_auth_id' => $userDetails['uid']
]);
return $this->ldapService->validateUserCredentials($userDetails, $credentials['username'], $credentials['password']);
}
/**
* Attempt to authenticate a user using the given credentials.
*
* @param array $credentials
* @param bool $remember
* @return bool
* @throws LoginAttemptEmailNeededException
* @throws LoginAttemptException
* @throws LdapException
*/
public function attempt(array $credentials = [], $remember = false)
{
$username = $credentials['username'];
$userDetails = $this->ldapService->getUserDetails($username);
$this->lastAttempted = $user = $this->provider->retrieveByCredentials([
'external_auth_id' => $userDetails['uid']
]);
if (!$this->ldapService->validateUserCredentials($userDetails, $username, $credentials['password'])) {
return false;
}
if (is_null($user)) {
$user = $this->freshUserInstanceFromLdapUserDetails($userDetails);
}
$this->checkForUserEmail($user, $credentials['email'] ?? '');
$this->saveIfNew($user);
// Sync LDAP groups if required
if ($this->ldapService->shouldSyncGroups()) {
$this->ldapService->syncGroups($user, $username);
}
$this->login($user, $remember);
return true;
}
/**
* Save the give user if they don't yet existing in the system.
* @throws LoginAttemptException
*/
protected function saveIfNew(User $user)
{
if ($user->exists) {
return;
}
// Check for existing users with same email
$alreadyUser = $user->newQuery()->where('email', '=', $user->email)->count() > 0;
if ($alreadyUser) {
throw new LoginAttemptException(trans('errors.error_user_exists_different_creds', ['email' => $user->email]));
}
$user->save();
$this->userRepo->attachDefaultRole($user);
$this->userRepo->downloadAndAssignUserAvatar($user);
}
/**
* Ensure the given user has an email.
* Takes the provided email in the request if a value is provided
* and the user does not have an existing email.
* @throws LoginAttemptEmailNeededException
*/
protected function checkForUserEmail(User $user, string $providedEmail)
{
// Request email if missing from user and missing from request
if (is_null($user->email) && !$providedEmail) {
throw new LoginAttemptEmailNeededException();
}
// Add email to model if non-existing and email provided in request
if (!$user->exists && is_null($user->email) && $providedEmail) {
$user->email = $providedEmail;
}
}
/**
* Create a fresh user instance from details provided by a LDAP lookup.
*/
protected function freshUserInstanceFromLdapUserDetails(array $ldapUserDetails): User
{
$user = new User();
$user->name = $ldapUserDetails['name'];
$user->external_auth_id = $ldapUserDetails['uid'];
$user->email = $ldapUserDetails['email'];
$user->email_confirmed = false;
return $user;
}
}