112 lines
3.2 KiB
PHP
112 lines
3.2 KiB
PHP
<?php
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declare(strict_types=1);
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/**
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* @copyright Copyright (c) 2020 Arthur Schiwon <blizzz@arthur-schiwon.de>
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*
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* @author Arthur Schiwon <blizzz@arthur-schiwon.de>
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*
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* @license GNU AGPL version 3 or any later version
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU Affero General Public License as
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* published by the Free Software Foundation, either version 3 of the
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* License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU Affero General Public License for more details.
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*
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* You should have received a copy of the GNU Affero General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*
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*/
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namespace OCA\User_SAML;
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use OCA\User_SAML\Exceptions\NoUserFoundException;
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use OCP\IUser;
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use OCP\IUserManager;
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class UserResolver {
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/** @var IUserManager */
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private $userManager;
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public function __construct(IUserManager $userManager) {
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$this->userManager = $userManager;
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}
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/**
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* @throws NoUserFoundException
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*/
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public function findExistingUserId(string $rawUidCandidate, bool $force = false): string {
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if($force) {
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$this->ensureUser($rawUidCandidate);
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}
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if($this->userManager->userExists($rawUidCandidate)) {
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return $rawUidCandidate;
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}
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try {
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$sanitized = $this->sanitizeUserIdCandidate($rawUidCandidate);
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} catch(\InvalidArgumentException $e) {
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$sanitized = '';
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}
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if($this->userManager->userExists($sanitized)) {
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return $sanitized;
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}
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throw new NoUserFoundException('User' . $rawUidCandidate . ' not valid or not found');
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}
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/**
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* @throws NoUserFoundException
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*/
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public function findExistingUser(string $rawUidCandidate): IUser {
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$uid = $this->findExistingUserId($rawUidCandidate);
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$user = $this->userManager->get($uid);
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if($user === null) {
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throw new NoUserFoundException('User' . $rawUidCandidate . ' not valid or not found');
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}
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return $user;
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}
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public function userExists(string $uid, bool $force = false): bool {
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try {
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$this->findExistingUserId($uid, $force);
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return true;
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} catch(NoUserFoundException $e) {
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return false;
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}
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}
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protected function ensureUser($search) {
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$this->userManager->search($search);
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}
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/**
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* @throws \InvalidArgumentException
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*/
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protected function sanitizeUserIdCandidate(string $rawUidCandidate): string {
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//FIXME: adjusted copy of LDAP's Access::sanitizeUsername(), should go to API
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$sanitized = trim($rawUidCandidate);
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// Transliteration to ASCII
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$transliterated = @iconv('UTF-8', 'ASCII//TRANSLIT', $sanitized);
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if($transliterated !== false) {
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// depending on system config iconv can work or not
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$sanitized = $transliterated;
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}
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// Replacements
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$sanitized = str_replace(' ', '_', $sanitized);
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// Every remaining disallowed characters will be removed
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$sanitized = preg_replace('/[^a-zA-Z0-9_.@-]/u', '', $sanitized);
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if($sanitized === '') {
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throw new \InvalidArgumentException('provided name template for username does not contain any allowed characters');
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}
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return $sanitized;
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}
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}
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