/**

*

* @package acm

* @version $Id: cache.php 8691 2008-07-28 13:26:20Z acydburn $

* @copyright (c) 2005 phpBB Group

* @license http://opensource.org/licenses/gpl-license.php GNU Public License

*

*/

/**

* @ignore

*/

if (!defined('IN_PHPBB'))

{

	exit;

}

/**

* Class for grabbing/handling cached entries, extends acm_file or acm_db depending on the setup

* @package acm

*/

class cache extends acm

{

	/**

	* Get config values

	*/

	function obtain_config()

	{

		global $db;

		if (($config = $this->get('config')) !== false)

		{

			$sql = 'SELECT config_name, config_value

				FROM ' . CONFIG_TABLE . '

				WHERE is_dynamic = 1';

			$result = $db->sql_query($sql);

			while ($row = $db->sql_fetchrow($result))

			{

				$config[$row['config_name']] = $row['config_value'];

			}

			$db->sql_freeresult($result);

		}

		else

		{

			$config = $cached_config = array();

			$sql = 'SELECT config_name, config_value, is_dynamic

				FROM ' . CONFIG_TABLE;

			$result = $db->sql_query($sql);

			while ($row = $db->sql_fetchrow($result))

			{

				if (!$row['is_dynamic'])

				{

					$cached_config[$row['config_name']] = $row['config_value'];

				}

				$config[$row['config_name']] = $row['config_value'];

			}

			$db->sql_freeresult($result);

			$this->put('config', $cached_config);

		}

		return $config;

	}

	/**

	* Obtain list of naughty words and build preg style replacement arrays for use by the

	* calling script

	*/

	function obtain_word_list()

	{

		global $db;

		if (($censors = $this->get('_word_censors')) === false)

		{

			$sql = 'SELECT word, replacement

				FROM ' . WORDS_TABLE;

			$result = $db->sql_query($sql);

			$censors = array();

			while ($row = $db->sql_fetchrow($result))

			{

				$censors['match'][] = '#(?

				$censors['replace'][] = $row['replacement'];

			}

			$db->sql_freeresult($result);

			$this->put('_word_censors', $censors);

		}

		return $censors;

	}

	/**

	* Obtain currently listed icons

	*/

	function obtain_icons()

	{

		if (($icons = $this->get('_icons')) === false)

		{

			global $db;

			// Topic icons

			$sql = 'SELECT *

				FROM ' . ICONS_TABLE . '

				ORDER BY icons_order';

			$result = $db->sql_query($sql);

			$icons = array();

			while ($row = $db->sql_fetchrow($result))

			{

				$icons[$row['icons_id']]['img'] = $row['icons_url'];

				$icons[$row['icons_id']]['width'] = (int) $row['icons_width'];

				$icons[$row['icons_id']]['height'] = (int) $row['icons_height'];

				$icons[$row['icons_id']]['display'] = (bool) $row['display_on_posting'];

			}

			$db->sql_freeresult($result);

			$this->put('_icons', $icons);

		}

		return $icons;

	}

	/**

	* Obtain ranks

	*/

	function obtain_ranks()

	{

		if (($ranks = $this->get('_ranks')) === false)

		{

			global $db;

			$sql = 'SELECT *

				FROM ' . RANKS_TABLE . '

				ORDER BY rank_min DESC';

			$result = $db->sql_query($sql);

			$ranks = array();

			while ($row = $db->sql_fetchrow($result))

			{

				if ($row['rank_special'])

				{

					$ranks['special'][$row['rank_id']] = array(

						'rank_title'	=>	$row['rank_title'],

						'rank_image'	=>	$row['rank_image']

					);

				}

				else

				{

					$ranks['normal'][] = array(

						'rank_title'	=>	$row['rank_title'],

						'rank_min'		=>	$row['rank_min'],

						'rank_image'	=>	$row['rank_image']

					);

				}

			}

			$db->sql_freeresult($result);

			$this->put('_ranks', $ranks);

		}

		return $ranks;

	}

	/**

	* Obtain allowed extensions

	*

	* @param mixed $forum_id If false then check for private messaging, if int then check for forum id. If true, then only return extension informations.

	*

	* @return array allowed extensions array.

	*/

	function obtain_attach_extensions($forum_id)

	{

		if (($extensions = $this->get('_extensions')) === false)

		{

			global $db;

			$extensions = array(

				'_allowed_post'	=> array(),

				'_allowed_pm'	=> array(),

			);

			// The rule is to only allow those extensions defined. ;)

			$sql = 'SELECT e.extension, g.*

				FROM ' . EXTENSIONS_TABLE . ' e, ' . EXTENSION_GROUPS_TABLE . ' g

				WHERE e.group_id = g.group_id

					AND (g.allow_group = 1 OR g.allow_in_pm = 1)';

			$result = $db->sql_query($sql);

			while ($row = $db->sql_fetchrow($result))

			{

				$extension = strtolower(trim($row['extension']));

				$extensions[$extension] = array(

					'display_cat'	=> (int) $row['cat_id'],

					'download_mode'	=> (int) $row['download_mode'],

					'upload_icon'	=> trim($row['upload_icon']),

					'max_filesize'	=> (int) $row['max_filesize'],

					'allow_group'	=> $row['allow_group'],

					'allow_in_pm'	=> $row['allow_in_pm'],

				);

				$allowed_forums = ($row['allowed_forums']) ? unserialize(trim($row['allowed_forums'])) : array();

				// Store allowed extensions forum wise

				if ($row['allow_group'])

				{

					$extensions['_allowed_post'][$extension] = (!sizeof($allowed_forums)) ? 0 : $allowed_forums;

				}

				if ($row['allow_in_pm'])

				{

					$extensions['_allowed_pm'][$extension] = 0;

				}

			}

			$db->sql_freeresult($result);

			$this->put('_extensions', $extensions);

		}

		// Forum post

		if ($forum_id === false)

		{

			// We are checking for private messages, therefore we only need to get the pm extensions...

			$return = array('_allowed_' => array());

			foreach ($extensions['_allowed_pm'] as $extension => $check)

			{

				$return['_allowed_'][$extension] = 0;

				$return[$extension] = $extensions[$extension];

			}

			$extensions = $return;

		}

		else if ($forum_id === true)

		{

			return $extensions;

		}

		else

		{

			$forum_id = (int) $forum_id;

			$return = array('_allowed_' => array());

			foreach ($extensions['_allowed_post'] as $extension => $check)

			{

				// Check for allowed forums

				if (is_array($check))

				{

					$allowed = (!in_array($forum_id, $check)) ? false : true;

				}

				else

				{

					$allowed = true;

				}

				if ($allowed)

				{

					$return['_allowed_'][$extension] = 0;

					$return[$extension] = $extensions[$extension];

				}

			}

			$extensions = $return;

		}

		if (!isset($extensions['_allowed_']))

		{

			$extensions['_allowed_'] = array();

		}

		return $extensions;

	}

	/**

	* Obtain active bots

	*/

	function obtain_bots()

	{

		if (($bots = $this->get('_bots')) === false)

		{

			global $db;

			switch ($db->sql_layer)

			{

				case 'mssql':

				case 'mssql_odbc':

					$sql = 'SELECT user_id, bot_agent, bot_ip

						FROM ' . BOTS_TABLE . '

						WHERE bot_active = 1

					ORDER BY LEN(bot_agent) DESC';

				break;

				case 'firebird':

					$sql = 'SELECT user_id, bot_agent, bot_ip

						FROM ' . BOTS_TABLE . '

						WHERE bot_active = 1

					ORDER BY CHAR_LENGTH(bot_agent) DESC';

				break;

				// LENGTH supported by MySQL, IBM DB2 and Oracle for sure...

				default:

					$sql = 'SELECT user_id, bot_agent, bot_ip

						FROM ' . BOTS_TABLE . '

						WHERE bot_active = 1

					ORDER BY LENGTH(bot_agent) DESC';

				break;

			}

			$result = $db->sql_query($sql);

			$bots = array();

			while ($row = $db->sql_fetchrow($result))

			{

				$bots[] = $row;

			}

			$db->sql_freeresult($result);

			$this->put('_bots', $bots);

		}

		return $bots;

	}

	/**

	* Obtain cfg file data

	*/

	function obtain_cfg_items($theme)

	{

		global $config, $phpbb_root_path;

		$parsed_items = array(

			'theme'		=> array(),

			'template'	=> array(),

			'imageset'	=> array()

		);

		foreach ($parsed_items as $key => $parsed_array)

		{

			$parsed_array = $this->get('_cfg_' . $key . '_' . $theme[$key . '_path']);

			if ($parsed_array === false)

			{

				$parsed_array = array();

			}

			$reparse = false;

			$filename = $phpbb_root_path . 'styles/' . $theme[$key . '_path'] . '/' . $key . '/' . $key . '.cfg';

			if (!file_exists($filename))

			{

				continue;

			}

			if (!isset($parsed_array['filetime']) || (($config['load_tplcompile'] && @filemtime($filename) > $parsed_array['filetime'])))

			{

				$reparse = true;

			}

			// Re-parse cfg file

			if ($reparse)

			{

				$parsed_array = parse_cfg_file($filename);

				$parsed_array['filetime'] = @filemtime($filename);

				$this->put('_cfg_' . $key . '_' . $theme[$key . '_path'], $parsed_array);

			}

			$parsed_items[$key] = $parsed_array;

		}

		return $parsed_items;

	}

	/**

	* Obtain disallowed usernames

	*/

	function obtain_disallowed_usernames()

	{

		if (($usernames = $this->get('_disallowed_usernames')) === false)

		{

			global $db;

			$sql = 'SELECT disallow_username

				FROM ' . DISALLOW_TABLE;

			$result = $db->sql_query($sql);

			$usernames = array();

			while ($row = $db->sql_fetchrow($result))

			{

				$usernames[] = str_replace('%', '.*?', preg_quote(utf8_clean_string($row['disallow_username']), '#'));

			}

			$db->sql_freeresult($result);

			$this->put('_disallowed_usernames', $usernames);

		}

		return $usernames;

	}

	/**

	* Obtain hooks...

	*/

	function obtain_hooks()

	{

		global $phpbb_root_path, $phpEx;

		if (($hook_files = $this->get('_hooks')) === false)

		{

			$hook_files = array();

			// Now search for hooks...

			$dh = @opendir($phpbb_root_path . 'includes/hooks/');

			if ($dh)

			{

				while (($file = readdir($dh)) !== false)

				{

					if (strpos($file, 'hook_') === 0 && substr($file, -(strlen($phpEx) + 1)) === '.' . $phpEx)

					{

						$hook_files[] = substr($file, 0, -(strlen($phpEx) + 1));

					}

				}

				closedir($dh);

			}

			$this->put('_hooks', $hook_files);

		}

		return $hook_files;

	}

}

?>