New hashing algorithms.

lib/HashAlgorithm/Joomla.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Nextcloud - user_sql
+ * Copyright (C) 2018 Marcin Łojewski <dev@mlojewski.me>
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License as
+ * published by the Free Software Foundation, either version 3 of the
+ * License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ */
+
+namespace OCA\UserSQL\HashAlgorithm;
+
+use OCA\UserSQL\HashAlgorithm\Base\HashAlgorithm;
+use OCA\UserSQL\HashAlgorithm\Base\Singleton;
+use OCA\UserSQL\HashAlgorithm\Base\Utils;
+
+/**
+ * Joomla hashing implementation.
+ * @author Marcin Łojewski <dev@mlojewski.me>
+ */
+class Joomla implements HashAlgorithm
+{
+    use Singleton;
+    use Utils;
+
+    /**
+     * @inheritdoc
+     */
+    public function getVisibleName()
+    {
+        return "Joomla MD5 Encryption";
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function getPasswordHash($password)
+    {
+        return md5($password . ":" . self::randomString(32,
+                "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz"));
+    }
+
+    /**
+     * @inheritdoc
+     */
+    public function checkPassword($password, $dbHash)
+    {
+        return hash_equals($dbHash, self::generateHash($password, $dbHash));
+    }
+
+    private static function generateHash($password, $dbHash)
+    {
+        $split_salt = preg_split("/:/", $dbHash);
+        $salt = false;
+        if (isset($split_salt[1])) {
+            $salt = $split_salt[1];
+        }
+        $pwHash = ($salt) ? md5($password . $salt) : md5($password);
+        $pwHash .= ":" . $salt;
+        return $pwHash;
+    }
+}