[ticket/security/233] Make smtp_password and smtp_username dynamic

SECURITY-233

phpBB/phpbb/db/migration/data/v32x/smtp_dynamic_data.php

@@ -0,0 +1,42 @@
+<?php
+/**
+ *
+ * This file is part of the phpBB Forum Software package.
+ *
+ * @copyright (c) phpBB Limited <https://www.phpbb.com>
+ * @license GNU General Public License, version 2 (GPL-2.0)
+ *
+ * For full copyright and license information, please see
+ * the docs/CREDITS.txt file.
+ *
+ */
+
+namespace phpbb\db\migration\data\v32x;
+
+class smtp_dynamic_data extends \phpbb\db\migration\migration
+{
+	static public function depends_on()
+	{
+		return array(
+			'\phpbb\db\migration\data\v32x\v326rc1',
+		);
+	}
+
+	public function update_data()
+	{
+		return array(
+			array('custom', array(array($this, 'set_smtp_dynamic'))),
+		);
+	}
+
+	public function set_smtp_dynamic()
+	{
+		$smtp_auth_entries = [
+			'smtp_password',
+			'smtp_username',
+		];
+		$this->sql_query('UPDATE ' . CONFIG_TABLE . '
+			SET is_dynamic = 1
+			WHERE ' . $this->db->sql_in_set('config_name', $smtp_auth_entries));
+	}
+}