Chris@76: <?php
Chris@76: 
Chris@76: /**
Chris@76:  * Simple Machines Forum (SMF)
Chris@76:  *
Chris@76:  * @package SMF
Chris@76:  * @author Simple Machines http://www.simplemachines.org
Chris@76:  * @copyright 2011 Simple Machines
Chris@76:  * @license http://www.simplemachines.org/about/smf/license.php BSD
Chris@76:  *
Chris@76:  * @version 2.0.4
Chris@76:  */
Chris@76: 
Chris@76: /*	This, as you have probably guessed, is the crux on which SMF functions.
Chris@76: 	Everything should start here, so all the setup and security is done
Chris@76: 	properly.  The most interesting part of this file is the action array in
Chris@76: 	the smf_main() function.  It is formatted as so:
Chris@76: 
Chris@76: 		'action-in-url' => array('Source-File.php', 'FunctionToCall'),
Chris@76: 
Chris@76: 	Then, you can access the FunctionToCall() function from Source-File.php
Chris@76: 	with the URL index.php?action=action-in-url.  Relatively simple, no?
Chris@76: */
Chris@76: 
Chris@76: $forum_version = 'SMF 2.0.4';
Chris@76: 
Chris@76: // Get everything started up...
Chris@76: define('SMF', 1);
Chris@76: if (function_exists('set_magic_quotes_runtime'))
Chris@76: 	@set_magic_quotes_runtime(0);
Chris@76: error_reporting(defined('E_STRICT') ? E_ALL | E_STRICT : E_ALL);
Chris@76: $time_start = microtime();
Chris@76: 
Chris@76: // This makes it so headers can be sent!
Chris@76: ob_start();
Chris@76: 
Chris@76: // Do some cleaning, just in case.
Chris@76: foreach (array('db_character_set', 'cachedir') as $variable)
Chris@76: 	if (isset($GLOBALS[$variable]))
Chris@76: 		unset($GLOBALS[$variable], $GLOBALS[$variable]);
Chris@76: 
Chris@76: // Load the settings...
Chris@76: require_once(dirname(__FILE__) . '/Settings.php');
Chris@76: 
Chris@76: // Make absolutely sure the cache directory is defined.
Chris@76: if ((empty($cachedir) || !file_exists($cachedir)) && file_exists($boarddir . '/cache'))
Chris@76: 	$cachedir = $boarddir . '/cache';
Chris@76: 
Chris@76: // And important includes.
Chris@76: require_once($sourcedir . '/QueryString.php');
Chris@76: require_once($sourcedir . '/Subs.php');
Chris@76: require_once($sourcedir . '/Errors.php');
Chris@76: require_once($sourcedir . '/Load.php');
Chris@76: require_once($sourcedir . '/Security.php');
Chris@76: 
Chris@76: // Using an pre-PHP 5.1 version?
Chris@76: if (@version_compare(PHP_VERSION, '5.1') == -1)
Chris@76: 	require_once($sourcedir . '/Subs-Compat.php');
Chris@76: 
Chris@76: // If $maintenance is set specifically to 2, then we're upgrading or something.
Chris@76: if (!empty($maintenance) && $maintenance == 2)
Chris@76: 	db_fatal_error();
Chris@76: 
Chris@76: // Create a variable to store some SMF specific functions in.
Chris@76: $smcFunc = array();
Chris@76: 
Chris@76: // Initate the database connection and define some database functions to use.
Chris@76: loadDatabase();
Chris@76: 
Chris@76: // Load the settings from the settings table, and perform operations like optimizing.
Chris@76: reloadSettings();
Chris@76: // Clean the request variables, add slashes, etc.
Chris@76: cleanRequest();
Chris@76: $context = array();
Chris@76: 
Chris@76: // Seed the random generator.
Chris@76: if (empty($modSettings['rand_seed']) || mt_rand(1, 250) == 69)
Chris@76: 	smf_seed_generator();
Chris@76: 
Chris@76: // Before we get carried away, are we doing a scheduled task? If so save CPU cycles by jumping out!
Chris@76: if (isset($_GET['scheduled']))
Chris@76: {
Chris@76: 	require_once($sourcedir . '/ScheduledTasks.php');
Chris@76: 	AutoTask();
Chris@76: }
Chris@76: 
Chris@76: // Check if compressed output is enabled, supported, and not already being done.
Chris@76: if (!empty($modSettings['enableCompressedOutput']) && !headers_sent())
Chris@76: {
Chris@76: 	// If zlib is being used, turn off output compression.
Chris@76: 	if (@ini_get('zlib.output_compression') == '1' || @ini_get('output_handler') == 'ob_gzhandler' || @version_compare(PHP_VERSION, '4.2.0') == -1)
Chris@76: 		$modSettings['enableCompressedOutput'] = '0';
Chris@76: 	else
Chris@76: 	{
Chris@76: 		ob_end_clean();
Chris@76: 		ob_start('ob_gzhandler');
Chris@76: 	}
Chris@76: }
Chris@76: 
Chris@76: // Register an error handler.
Chris@76: set_error_handler('error_handler');
Chris@76: 
Chris@76: // Start the session. (assuming it hasn't already been.)
Chris@76: loadSession();
Chris@76: 
Chris@76: // Determine if this is using WAP, WAP2, or imode.  Technically, we should check that wap comes before application/xhtml or text/html, but this doesn't work in practice as much as it should.
Chris@76: if (isset($_REQUEST['wap']) || isset($_REQUEST['wap2']) || isset($_REQUEST['imode']))
Chris@76: 	unset($_SESSION['nowap']);
Chris@76: elseif (isset($_REQUEST['nowap']))
Chris@76: 	$_SESSION['nowap'] = true;
Chris@76: elseif (!isset($_SESSION['nowap']))
Chris@76: {
Chris@76: 	if (isset($_SERVER['HTTP_ACCEPT']) && strpos($_SERVER['HTTP_ACCEPT'], 'application/vnd.wap.xhtml+xml') !== false)
Chris@76: 		$_REQUEST['wap2'] = 1;
Chris@76: 	elseif (isset($_SERVER['HTTP_ACCEPT']) && strpos($_SERVER['HTTP_ACCEPT'], 'text/vnd.wap.wml') !== false)
Chris@76: 	{
Chris@76: 		if (strpos($_SERVER['HTTP_USER_AGENT'], 'DoCoMo/') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'portalmmm/') !== false)
Chris@76: 			$_REQUEST['imode'] = 1;
Chris@76: 		else
Chris@76: 			$_REQUEST['wap'] = 1;
Chris@76: 	}
Chris@76: }
Chris@76: 
Chris@76: if (!defined('WIRELESS'))
Chris@76: 	define('WIRELESS', isset($_REQUEST['wap']) || isset($_REQUEST['wap2']) || isset($_REQUEST['imode']));
Chris@76: 
Chris@76: // Some settings and headers are different for wireless protocols.
Chris@76: if (WIRELESS)
Chris@76: {
Chris@76: 	define('WIRELESS_PROTOCOL', isset($_REQUEST['wap']) ? 'wap' : (isset($_REQUEST['wap2']) ? 'wap2' : (isset($_REQUEST['imode']) ? 'imode' : '')));
Chris@76: 
Chris@76: 	// Some cellphones can't handle output compression...
Chris@76: 	$modSettings['enableCompressedOutput'] = '0';
Chris@76: 	// !!! Do we want these hard coded?
Chris@76: 	$modSettings['defaultMaxMessages'] = 5;
Chris@76: 	$modSettings['defaultMaxTopics'] = 9;
Chris@76: 
Chris@76: 	// Wireless protocol header.
Chris@76: 	if (WIRELESS_PROTOCOL == 'wap')
Chris@76: 		header('Content-Type: text/vnd.wap.wml');
Chris@76: }
Chris@76: 
Chris@76: // Restore post data if we are revalidating OpenID.
Chris@76: if (isset($_GET['openid_restore_post']) && !empty($_SESSION['openid']['saved_data'][$_GET['openid_restore_post']]['post']) && empty($_POST))
Chris@76: {
Chris@76: 	$_POST = $_SESSION['openid']['saved_data'][$_GET['openid_restore_post']]['post'];
Chris@76: 	unset($_SESSION['openid']['saved_data'][$_GET['openid_restore_post']]);
Chris@76: }
Chris@76: 
Chris@76: // What function shall we execute? (done like this for memory's sake.)
Chris@76: call_user_func(smf_main());
Chris@76: 
Chris@76: // Call obExit specially; we're coming from the main area ;).
Chris@76: obExit(null, null, true);
Chris@76: 
Chris@76: // The main controlling function.
Chris@76: function smf_main()
Chris@76: {
Chris@76: 	global $modSettings, $settings, $user_info, $board, $topic, $board_info, $maintenance, $sourcedir;
Chris@76: 
Chris@76: 	// Special case: session keep-alive, output a transparent pixel.
Chris@76: 	if (isset($_GET['action']) && $_GET['action'] == 'keepalive')
Chris@76: 	{
Chris@76: 		header('Content-Type: image/gif');
Chris@76: 		die("\x47\x49\x46\x38\x39\x61\x01\x00\x01\x00\x80\x00\x00\x00\x00\x00\x00\x00\x00\x21\xF9\x04\x01\x00\x00\x00\x00\x2C\x00\x00\x00\x00\x01\x00\x01\x00\x00\x02\x02\x44\x01\x00\x3B");
Chris@76: 	}
Chris@76: 
Chris@76: 	// Load the user's cookie (or set as guest) and load their settings.
Chris@76: 	loadUserSettings();
Chris@76: 
Chris@76: 	// Load the current board's information.
Chris@76: 	loadBoard();
Chris@76: 
Chris@76: 	// Load the current user's permissions.
Chris@76: 	loadPermissions();
Chris@76: 
Chris@76: 	// Attachments don't require the entire theme to be loaded.
Chris@76: 	if (isset($_REQUEST['action']) && $_REQUEST['action'] == 'dlattach' && (!empty($modSettings['allow_guestAccess']) && $user_info['is_guest']))
Chris@76: 		detectBrowser();
Chris@76: 	// Load the current theme.  (note that ?theme=1 will also work, may be used for guest theming.)
Chris@76: 	else
Chris@76: 		loadTheme();
Chris@76: 
Chris@76: 	// Check if the user should be disallowed access.
Chris@76: 	is_not_banned();
Chris@76: 
Chris@76: 	// If we are in a topic and don't have permission to approve it then duck out now.
Chris@76: 	if (!empty($topic) && empty($board_info['cur_topic_approved']) && !allowedTo('approve_posts') && ($user_info['id'] != $board_info['cur_topic_starter'] || $user_info['is_guest']))
Chris@76: 		fatal_lang_error('not_a_topic', false);
Chris@76: 
Chris@76: 	// Do some logging, unless this is an attachment, avatar, toggle of editor buttons, theme option, XML feed etc.
Chris@76: 	if (empty($_REQUEST['action']) || !in_array($_REQUEST['action'], array('dlattach', 'findmember', 'jseditor', 'jsoption', 'requestmembers', 'smstats', '.xml', 'xmlhttp', 'verificationcode', 'viewquery', 'viewsmfile')))
Chris@76: 	{
Chris@76: 		// Log this user as online.
Chris@76: 		writeLog();
Chris@76: 
Chris@76: 		// Track forum statistics and hits...?
Chris@76: 		if (!empty($modSettings['hitStats']))
Chris@76: 			trackStats(array('hits' => '+'));
Chris@76: 	}
Chris@76: 
Chris@76: 	// Is the forum in maintenance mode? (doesn't apply to administrators.)
Chris@76: 	if (!empty($maintenance) && !allowedTo('admin_forum'))
Chris@76: 	{
Chris@76: 		// You can only login.... otherwise, you're getting the "maintenance mode" display.
Chris@76: 		if (isset($_REQUEST['action']) && ($_REQUEST['action'] == 'login2' || $_REQUEST['action'] == 'logout'))
Chris@76: 		{
Chris@76: 			require_once($sourcedir . '/LogInOut.php');
Chris@76: 			return $_REQUEST['action'] == 'login2' ? 'Login2' : 'Logout';
Chris@76: 		}
Chris@76: 		// Don't even try it, sonny.
Chris@76: 		else
Chris@76: 		{
Chris@76: 			require_once($sourcedir . '/Subs-Auth.php');
Chris@76: 			return 'InMaintenance';
Chris@76: 		}
Chris@76: 	}
Chris@76: 	// If guest access is off, a guest can only do one of the very few following actions.
Chris@76: 	elseif (empty($modSettings['allow_guestAccess']) && $user_info['is_guest'] && (!isset($_REQUEST['action']) || !in_array($_REQUEST['action'], array('coppa', 'login', 'login2', 'register', 'register2', 'reminder', 'activate', 'help', 'smstats', 'mailq', 'verificationcode', 'openidreturn'))))
Chris@76: 	{
Chris@76: 		require_once($sourcedir . '/Subs-Auth.php');
Chris@76: 		return 'KickGuest';
Chris@76: 	}
Chris@76: 	elseif (empty($_REQUEST['action']))
Chris@76: 	{
Chris@76: 		// Action and board are both empty... BoardIndex!
Chris@76: 		if (empty($board) && empty($topic))
Chris@76: 		{
Chris@76: 			require_once($sourcedir . '/BoardIndex.php');
Chris@76: 			return 'BoardIndex';
Chris@76: 		}
Chris@76: 		// Topic is empty, and action is empty.... MessageIndex!
Chris@76: 		elseif (empty($topic))
Chris@76: 		{
Chris@76: 			require_once($sourcedir . '/MessageIndex.php');
Chris@76: 			return 'MessageIndex';
Chris@76: 		}
Chris@76: 		// Board is not empty... topic is not empty... action is empty.. Display!
Chris@76: 		else
Chris@76: 		{
Chris@76: 			require_once($sourcedir . '/Display.php');
Chris@76: 			return 'Display';
Chris@76: 		}
Chris@76: 	}
Chris@76: 
Chris@76: 	// Here's the monstrous $_REQUEST['action'] array - $_REQUEST['action'] => array($file, $function).
Chris@76: 	$actionArray = array(
Chris@76: 		'activate' => array('Register.php', 'Activate'),
Chris@76: 		'admin' => array('Admin.php', 'AdminMain'),
Chris@76: 		'announce' => array('Post.php', 'AnnounceTopic'),
Chris@76: 		'attachapprove' => array('ManageAttachments.php', 'ApproveAttach'),
Chris@76: 		'buddy' => array('Subs-Members.php', 'BuddyListToggle'),
Chris@76: 		'calendar' => array('Calendar.php', 'CalendarMain'),
Chris@76: 		'clock' => array('Calendar.php', 'clock'),
Chris@76: 		'collapse' => array('BoardIndex.php', 'CollapseCategory'),
Chris@76: 		'coppa' => array('Register.php', 'CoppaForm'),
Chris@76: 		'credits' => array('Who.php', 'Credits'),
Chris@76: 		'deletemsg' => array('RemoveTopic.php', 'DeleteMessage'),
Chris@76: 		'display' => array('Display.php', 'Display'),
Chris@76: 		'dlattach' => array('Display.php', 'Download'),
Chris@76: 		'editpoll' => array('Poll.php', 'EditPoll'),
Chris@76: 		'editpoll2' => array('Poll.php', 'EditPoll2'),
Chris@76: 		'emailuser' => array('SendTopic.php', 'EmailUser'),
Chris@76: 		'findmember' => array('Subs-Auth.php', 'JSMembers'),
Chris@76: 		'groups' => array('Groups.php', 'Groups'),
Chris@76: 		'help' => array('Help.php', 'ShowHelp'),
Chris@76: 		'helpadmin' => array('Help.php', 'ShowAdminHelp'),
Chris@76: 		'im' => array('PersonalMessage.php', 'MessageMain'),
Chris@76: 		'jseditor' => array('Subs-Editor.php', 'EditorMain'),
Chris@76: 		'jsmodify' => array('Post.php', 'JavaScriptModify'),
Chris@76: 		'jsoption' => array('Themes.php', 'SetJavaScript'),
Chris@76: 		'lock' => array('LockTopic.php', 'LockTopic'),
Chris@76: 		'lockvoting' => array('Poll.php', 'LockVoting'),
Chris@76: 		'login' => array('LogInOut.php', 'Login'),
Chris@76: 		'login2' => array('LogInOut.php', 'Login2'),
Chris@76: 		'logout' => array('LogInOut.php', 'Logout'),
Chris@76: 		'markasread' => array('Subs-Boards.php', 'MarkRead'),
Chris@76: 		'mergetopics' => array('SplitTopics.php', 'MergeTopics'),
Chris@76: 		'mlist' => array('Memberlist.php', 'Memberlist'),
Chris@76: 		'moderate' => array('ModerationCenter.php', 'ModerationMain'),
Chris@76: 		'modifycat' => array('ManageBoards.php', 'ModifyCat'),
Chris@76: 		'modifykarma' => array('Karma.php', 'ModifyKarma'),
Chris@76: 		'movetopic' => array('MoveTopic.php', 'MoveTopic'),
Chris@76: 		'movetopic2' => array('MoveTopic.php', 'MoveTopic2'),
Chris@76: 		'notify' => array('Notify.php', 'Notify'),
Chris@76: 		'notifyboard' => array('Notify.php', 'BoardNotify'),
Chris@76: 		'openidreturn' => array('Subs-OpenID.php', 'smf_openID_return'),
Chris@76: 		'pm' => array('PersonalMessage.php', 'MessageMain'),
Chris@76: 		'post' => array('Post.php', 'Post'),
Chris@76: 		'post2' => array('Post.php', 'Post2'),
Chris@76: 		'printpage' => array('Printpage.php', 'PrintTopic'),
Chris@76: 		'profile' => array('Profile.php', 'ModifyProfile'),
Chris@76: 		'quotefast' => array('Post.php', 'QuoteFast'),
Chris@76: 		'quickmod' => array('MessageIndex.php', 'QuickModeration'),
Chris@76: 		'quickmod2' => array('Display.php', 'QuickInTopicModeration'),
Chris@76: 		'recent' => array('Recent.php', 'RecentPosts'),
Chris@76: 		'register' => array('Register.php', 'Register'),
Chris@76: 		'register2' => array('Register.php', 'Register2'),
Chris@76: 		'reminder' => array('Reminder.php', 'RemindMe'),
Chris@76: 		'removepoll' => array('Poll.php', 'RemovePoll'),
Chris@76: 		'removetopic2' => array('RemoveTopic.php', 'RemoveTopic2'),
Chris@76: 		'reporttm' => array('SendTopic.php', 'ReportToModerator'),
Chris@76: 		'requestmembers' => array('Subs-Auth.php', 'RequestMembers'),
Chris@76: 		'restoretopic' => array('RemoveTopic.php', 'RestoreTopic'),
Chris@76: 		'search' => array('Search.php', 'PlushSearch1'),
Chris@76: 		'search2' => array('Search.php', 'PlushSearch2'),
Chris@76: 		'sendtopic' => array('SendTopic.php', 'EmailUser'),
Chris@76: 		'smstats' => array('Stats.php', 'SMStats'),
Chris@76: 		'suggest' => array('Subs-Editor.php', 'AutoSuggestHandler'),
Chris@76: 		'spellcheck' => array('Subs-Post.php', 'SpellCheck'),
Chris@76: 		'splittopics' => array('SplitTopics.php', 'SplitTopics'),
Chris@76: 		'stats' => array('Stats.php', 'DisplayStats'),
Chris@76: 		'sticky' => array('LockTopic.php', 'Sticky'),
Chris@76: 		'theme' => array('Themes.php', 'ThemesMain'),
Chris@76: 		'trackip' => array('Profile-View.php', 'trackIP'),
Chris@76: 		'about:mozilla' => array('Karma.php', 'BookOfUnknown'),
Chris@76: 		'about:unknown' => array('Karma.php', 'BookOfUnknown'),
Chris@76: 		'unread' => array('Recent.php', 'UnreadTopics'),
Chris@76: 		'unreadreplies' => array('Recent.php', 'UnreadTopics'),
Chris@76: 		'verificationcode' => array('Register.php', 'VerificationCode'),
Chris@76: 		'viewprofile' => array('Profile.php', 'ModifyProfile'),
Chris@76: 		'vote' => array('Poll.php', 'Vote'),
Chris@76: 		'viewquery' => array('ViewQuery.php', 'ViewQuery'),
Chris@76: 		'viewsmfile' => array('Admin.php', 'DisplayAdminFile'),
Chris@76: 		'who' => array('Who.php', 'Who'),
Chris@76: 		'.xml' => array('News.php', 'ShowXmlFeed'),
Chris@76: 		'xmlhttp' => array('Xml.php', 'XMLhttpMain'),
Chris@76: 	);
Chris@76: 
Chris@76: 	// Allow modifying $actionArray easily.
Chris@76: 	call_integration_hook('integrate_actions', array(&$actionArray));
Chris@76: 
Chris@76: 	// Get the function and file to include - if it's not there, do the board index.
Chris@76: 	if (!isset($_REQUEST['action']) || !isset($actionArray[$_REQUEST['action']]))
Chris@76: 	{
Chris@76: 		// Catch the action with the theme?
Chris@76: 		if (!empty($settings['catch_action']))
Chris@76: 		{
Chris@76: 			require_once($sourcedir . '/Themes.php');
Chris@76: 			return 'WrapAction';
Chris@76: 		}
Chris@76: 
Chris@76: 		// Fall through to the board index then...
Chris@76: 		require_once($sourcedir . '/BoardIndex.php');
Chris@76: 		return 'BoardIndex';
Chris@76: 	}
Chris@76: 
Chris@76: 	// Otherwise, it was set - so let's go to that action.
Chris@76: 	require_once($sourcedir . '/' . $actionArray[$_REQUEST['action']][0]);
Chris@76: 	return $actionArray[$_REQUEST['action']][1];
Chris@76: }
Chris@76: 
Chris@76: ?>