1 files changed, 121 insertions, 0 deletions
diff --git a/phpBB/includes/db/migrationtools/config.php b/phpBB/includes/db/migrationtools/config.php
new file mode 100644
index 0000000000..5a40e39943
--- /dev/null
+++ b/phpBB/includes/db/migrationtools/config.php
@@ -0,0 +1,121 @@
+<?php
+/**
+*
+* @package migration
+* @copyright (c) 2012 phpBB Group
+* @license http://opensource.org/licenses/gpl-license.php GNU Public License v2
+*
+*/
+
+class phpbb_db_migrationtools_config extends phpbb_db_migration
+{
+	/**
+	* Config Exists
+	*
+	* This function is to check to see if a config variable exists or if it does not.
+	*
+	* @param string $config_name The name of the config setting you wish to check for.
+	* @param bool $return_result - return the config value/default if true : default false.
+	*
+	* @return bool true/false if config exists
+	*/
+	function config_exists($config_name, $return_result = false)
+	{
+		$sql = 'SELECT *
+				FROM ' . CONFIG_TABLE . "
+				WHERE config_name = '" . $this->db->sql_escape($config_name) . "'";
+		$result = $this->db->sql_query($sql);
+		$row = $this->db->sql_fetchrow($result);
+		$this->db->sql_freeresult($result);
+
+		if ($row)
+		{
+			if (!isset($this->config[$config_name]))
+			{
+				$this->config[$config_name] = $row['config_value'];
+
+				if (!$row['is_dynamic'])
+				{
+					$this->cache->destroy('config');
+				}
+			}
+
+			return ($return_result) ? $row : true;
+		}
+
+		// this should never happen, but if it does, we need to remove the config from the array
+		if (isset($this->config[$config_name]))
+		{
+			unset($this->config[$config_name]);
+			$this->cache->destroy('config');
+		}
+
+		return false;
+	}
+
+	/**
+	* Config Add
+	*
+	* This function allows you to add a config setting.
+	*
+	* @param string $config_name The name of the config setting you would like to add
+	* @param mixed $config_value The value of the config setting
+	* @param bool $is_dynamic True if it is dynamic (changes very often) and should not be stored in the cache, false if not.
+	*
+	* @return result
+	*/
+	function config_add($config_name, $config_value = '', $is_dynamic = false)
+	{
+		if ($this->config_exists($config_name))
+		{
+			return $this->umil_end('CONFIG_ALREADY_EXISTS', $config_name);
+		}
+
+		set_config($config_name, $config_value, $is_dynamic);
+	}
+
+	/**
+	* Config Update
+	*
+	* This function allows you to update an existing config setting.
+	*
+	* @param string $config_name The name of the config setting you would like to update
+	* @param mixed $config_value The value of the config setting
+	* @param bool $is_dynamic True if it is dynamic (changes very often) and should not be stored in the cache, false if not.
+	*
+	* @return result
+	*/
+	function config_update($config_name, $config_value = '')
+	{
+		if (!$this->config_exists($config_name))
+		{
+			return $this->umil_end('CONFIG_NOT_EXIST', $config_name);
+		}
+
+		set_config($config_name, $config_value);
+	}
+
+	/**
+	* Config Remove
+	*
+	* This function allows you to remove an existing config setting.
+	*
+	* @param string $config_name The name of the config setting you would like to remove
+	*
+	* @return result
+	*/
+	function config_remove($config_name)
+	{
+		if (!$this->config_exists($config_name))
+		{
+			return $this->umil_end('CONFIG_NOT_EXIST', $config_name);
+		}
+
+		$sql = 'DELETE FROM ' . CONFIG_TABLE . "
+			WHERE config_name = '" . $this->db->sql_escape($config_name) . "'";
+		$this->db->sql_query($sql);
+
+		unset($this->config[$config_name]);
+		$this->cache->destroy('config');
+	}
+}
+\ No newline at end of file