From f7d068536a874d25d6d645150e6ceb027c855e9b Mon Sep 17 00:00:00 2001
From: Michael Foster <savetheinternet@tinyboard.org>
Date: Sat, 3 Aug 2013 07:50:25 -0400
Subject: [PATCH] EXPERIMENTAL: Try not to build pages when we shouldn't have
 to.

---
 inc/config.php    |   3 +
 inc/functions.php | 587 ++++++++++++++++++++++++++++--------------------------
 2 files changed, 307 insertions(+), 283 deletions(-)

diff --git a/inc/config.php b/inc/config.php
index e8422a75..120f3865 100644
--- a/inc/config.php
+++ b/inc/config.php
@@ -895,6 +895,9 @@
 
 	// Website favicon.
 	// $config['url_favicon'] = '/favicon.gif';
+	
+	// EXPERIMENTAL: Try not to build pages when we shouldn't have to.
+	$config['try_smarter'] = false;
 
 /*
  * ====================
diff --git a/inc/functions.php b/inc/functions.php
index dc814a2f..b6862444 100644
--- a/inc/functions.php
+++ b/inc/functions.php
@@ -24,14 +24,14 @@ loadConfig();
 
 function loadConfig() {
 	global $board, $config, $__ip, $debug, $__version;
-	
+
 	$error = function_exists('error') ? 'error' : 'basic_error_function_because_the_other_isnt_loaded_yet';
-	
+
 	reset_events();
-	
+
 	if (!isset($_SERVER['REMOTE_ADDR']))
 		$_SERVER['REMOTE_ADDR'] = '0.0.0.0';
-	
+
 	$arrays = array(
 		'db',
 		'cache',
@@ -57,41 +57,41 @@ function loadConfig() {
 		'custom_pages',
 		'dashboard_links'
 	);
-	
+
 	$config = array();
 	foreach ($arrays as $key) {
 		$config[$key] = array();
 	}
-	
+
 	require 'inc/config.php';
 	if (!file_exists('inc/instance-config.php'))
 		$error('Tinyboard is not configured! Create inc/instance-config.php.');
-	
+
 	require 'inc/instance-config.php';
-	
+
 	if (isset($board['dir']) && file_exists($board['dir'] . '/config.php')) {
 		require $board['dir'] . '/config.php';
 	}
-	
+
 	if (!isset($__version))
 		$__version = file_exists('.installed') ? trim(file_get_contents('.installed')) : false;
 	$config['version'] = $__version;
-	
+
 	if ($config['debug']) {
 		if (!isset($debug)) {
 			$debug = array('sql' => array(), 'purge' => array(), 'cached' => array(), 'write' => array());
 			$debug['start'] = microtime(true);
 		}
 	}
-	
+
 	date_default_timezone_set($config['timezone']);
-	
+
 	if (!isset($config['global_message']))
 		$config['global_message'] = false;
-	
+
 	if (!isset($config['post_url']))
 		$config['post_url'] = $config['root'] . $config['file_post'];
-	
+
 	if (!isset($config['referer_match']))
 		if (isset($_SERVER['HTTP_HOST'])) {
 			$config['referer_match'] = '/^' .
@@ -117,10 +117,10 @@ function loadConfig() {
 		}
 	if (!isset($config['cookies']['path']))
 		$config['cookies']['path'] = &$config['root'];
-		
+
 	if (!isset($config['dir']['static']))
 		$config['dir']['static'] = $config['root'] . 'static/';
-	
+
 	if (!isset($config['image_sticky']))
 		$config['image_sticky'] = $config['dir']['static'] . 'sticky.gif';
 	if (!isset($config['image_locked']))
@@ -129,27 +129,27 @@ function loadConfig() {
 		$config['image_bumplocked'] = $config['dir']['static'] . 'sage.gif';
 	if (!isset($config['image_deleted']))
 		$config['image_deleted'] = $config['dir']['static'] . 'deleted.png';
-	
+
 	if (!isset($config['uri_thumb']))
 		$config['uri_thumb'] = $config['root'] . $board['dir'] . $config['dir']['thumb'];
 	elseif (isset($board['dir']))
 		$config['uri_thumb'] = sprintf($config['uri_thumb'], $board['dir']);
-	
+
 	if (!isset($config['uri_img']))
 		$config['uri_img'] = $config['root'] . $board['dir'] . $config['dir']['img'];
 	elseif (isset($board['dir']))
 		$config['uri_img'] = sprintf($config['uri_img'], $board['dir']);
-	
+
 	if (!isset($config['uri_stylesheets']))
 		$config['uri_stylesheets'] = $config['root'] . 'stylesheets/';
-	
+
 	if (!isset($config['url_stylesheet']))
 		$config['url_stylesheet'] = $config['uri_stylesheets'] . 'style.css';
 	if (!isset($config['url_javascript']))
 		$config['url_javascript'] = $config['root'] . $config['file_script'];
 	if (!isset($config['additional_javascript_url']))
 		$config['additional_javascript_url'] = $config['root'];
-	
+
 	if ($config['root_file']) {
 		chdir($config['root_file']);
 	}
@@ -164,15 +164,15 @@ function loadConfig() {
 	// Keep the original address to properly comply with other board configurations
 	if (!isset($__ip))
 		$__ip = $_SERVER['REMOTE_ADDR'];
-	
+
 	// ::ffff:0.0.0.0
 	if (preg_match('/^\:\:(ffff\:)?(\d+\.\d+\.\d+\.\d+)$/', $__ip, $m))
 		$_SERVER['REMOTE_ADDR'] = $m[2];
-	
+
 	if (_setlocale(LC_ALL, $config['locale']) === false) {
 		$error('The specified locale (' . $config['locale'] . ') does not exist on your platform!');
 	}
-	
+
 	if (extension_loaded('gettext')) {
 		bindtextdomain('tinyboard', './inc/locale');
 		bind_textdomain_codeset('tinyboard', 'UTF-8');
@@ -182,11 +182,11 @@ function loadConfig() {
 		_bind_textdomain_codeset('tinyboard', 'UTF-8');
 		_textdomain('tinyboard');
 	}
-	
-	
+
+
 	if ($config['syslog'])
 		openlog('tinyboard', LOG_ODELAY, LOG_SYSLOG); // open a connection to sysem logger
-	
+
 	if ($config['recaptcha'])
 		require_once 'inc/lib/recaptcha/recaptchalib.php';
 	if ($config['cache']['enabled'])
@@ -196,12 +196,12 @@ function loadConfig() {
 
 function basic_error_function_because_the_other_isnt_loaded_yet($message, $priority = true) {
 	global $config;
-	
+
 	if ($config['syslog'] && $priority !== false) {
 		// Use LOG_NOTICE instead of LOG_ERR or LOG_WARNING because most error message are not significant.
 		_syslog($priority !== true ? $priority : LOG_NOTICE, $message);
 	}
-	
+
 	// Yes, this is horrible.
 	die('<!DOCTYPE html><html><head><title>Error</title>' .
 		'<style type="text/css">' .
@@ -247,7 +247,7 @@ function verbose_error_handler($errno, $errstr, $errfile, $errline) {
 
 function create_antibot($board, $thread = null) {
 	require_once dirname(__FILE__) . '/anti-bot.php';
-	
+
 	return _create_antibot($board, $thread);
 }
 
@@ -281,7 +281,7 @@ function rebuildTheme($theme, $action, $board = false) {
 
 	if (file_exists($config['dir']['themes'] . '/' . $_theme . '/theme.php')) {
 		require_once $config['dir']['themes'] . '/' . $_theme . '/theme.php';
-	
+
 		$theme['build_function']($action, themeSettings($_theme), $board);
 	}
 }
@@ -306,7 +306,7 @@ function sprintf3($str, $vars, $delim = '%') {
 		$replaces[$delim . $k . $delim] = $v;
 	}
 	return str_replace(array_keys($replaces),
-	                   array_values($replaces), $str);
+					   array_values($replaces), $str);
 }
 
 function mb_substr_replace($string, $replacement, $start, $length) {
@@ -315,21 +315,21 @@ function mb_substr_replace($string, $replacement, $start, $length) {
 
 function setupBoard($array) {
 	global $board, $config;
-	
+
 	$board = array(
 		'uri' => $array['uri'],
 		'title' => $array['title'],
 		'subtitle' => $array['subtitle']
 	);
-	
+
 	// older versions
 	$board['name'] = &$board['title'];
-	
+
 	$board['dir'] = sprintf($config['board_path'], $board['uri']);
 	$board['url'] = sprintf($config['board_abbreviation'], $board['uri']);
-	
+
 	loadConfig();
-	
+
 	if (!file_exists($board['dir']))
 		@mkdir($board['dir'], 0777) or error("Couldn't create " . $board['dir'] . ". Check permissions.", true);
 	if (!file_exists($board['dir'] . $config['dir']['img']))
@@ -344,6 +344,11 @@ function setupBoard($array) {
 }
 
 function openBoard($uri) {
+	global $config, $build_pages;
+
+	if ($config['try_smarter'])
+		$build_pages = array();
+
 	$board = getBoardInfo($uri);
 	if ($board) {
 		setupBoard($board);
@@ -358,11 +363,11 @@ function getBoardInfo($uri) {
 	if ($config['cache']['enabled'] && ($board = cache::get('board_' . $uri))) {
 		return $board;
 	}
-	
+
 	$query = prepare("SELECT * FROM ``boards`` WHERE `uri` = :uri LIMIT 1");
 	$query->bindValue(':uri', $uri);
 	$query->execute() or error(db_error($query));
-	
+
 	if ($board = $query->fetch(PDO::FETCH_ASSOC)) {
 		if ($config['cache']['enabled'])
 			cache::set('board_' . $uri, $board);
@@ -381,22 +386,22 @@ function boardTitle($uri) {
 
 function purge($uri) {
 	global $config, $debug;
-	
+
 	// Fix for Unicode
 	$uri = urlencode($uri); 
 	$uri = str_replace("%2F", "/", $uri);
 	$uri = str_replace("%3A", ":", $uri);
-	
+
 	if (preg_match($config['referer_match'], $config['root']) && isset($_SERVER['REQUEST_URI'])) {
 		$uri = (str_replace('\\', '/', dirname($_SERVER['REQUEST_URI'])) == '/' ? '/' : str_replace('\\', '/', dirname($_SERVER['REQUEST_URI'])) . '/') . $uri;
 	} else {
 		$uri = $config['root'] . $uri;
 	}
-	
+
 	if ($config['debug']) {
 		$debug['purge'][] = $uri;
 	}
-			
+
 	foreach ($config['purge'] as &$purge) {
 		$host = &$purge[0];
 		$port = &$purge[1];
@@ -414,11 +419,11 @@ function purge($uri) {
 
 function file_write($path, $data, $simple = false, $skip_purge = false) {
 	global $config, $debug;
-	
+
 	if (preg_match('/^remote:\/\/(.+)\:(.+)$/', $path, $m)) {
 		if (isset($config['remote'][$m[1]])) {
 			require_once 'inc/remote.php';
-			
+
 			$remote = new Remote($config['remote'][$m[1]]);
 			$remote->write($data, $m[2]);
 			return;
@@ -426,31 +431,31 @@ function file_write($path, $data, $simple = false, $skip_purge = false) {
 			error('Invalid remote server: ' . $m[1]);
 		}
 	}
-	
+
 	if (!$fp = fopen($path, $simple ? 'w' : 'c'))
 		error('Unable to open file for writing: ' . $path);
-	
+
 	// File locking
 	if (!$simple && !flock($fp, LOCK_EX)) {
 		error('Unable to lock file: ' . $path);
 	}
-	
+
 	// Truncate file
 	if (!$simple && !ftruncate($fp, 0))
 		error('Unable to truncate file: ' . $path);
-		
+
 	// Write data
 	if (($bytes = fwrite($fp, $data)) === false)
 		error('Unable to write to file: ' . $path);
-	
+
 	// Unlock
 	if (!$simple)
 		flock($fp, LOCK_UN);
-	
+
 	// Close
 	if (!fclose($fp))
 		error('Unable to close file: ' . $path);
-	
+
 	if (!$skip_purge && isset($config['purge'])) {
 		// Purge cache
 		if (basename($path) == $config['file_index']) {
@@ -465,23 +470,23 @@ function file_write($path, $data, $simple = false, $skip_purge = false) {
 		}
 		purge($path);
 	}
-	
+
 	if ($config['debug']) {
 		$debug['write'][] = $path . ': ' . $bytes . ' bytes';
 	}
-	
+
 	event('write', $path);
 }
 
 function file_unlink($path) {
 	global $config, $debug;
-	
+
 	if ($config['debug']) {
 		if (!isset($debug['unlink']))
 			$debug['unlink'] = array();
 		$debug['unlink'][] = $path;
 	}
-	
+
 	$ret = @unlink($path);
 	if (isset($config['purge']) && $path[0] != '/' && isset($_SERVER['HTTP_HOST'])) {
 		// Purge cache
@@ -497,56 +502,56 @@ function file_unlink($path) {
 		}
 		purge($path);
 	}
-	
+
 	event('unlink', $path);
-	
+
 	return $ret;
 }
 
 function hasPermission($action = null, $board = null, $_mod = null) {
 	global $config;
-		
+
 	if (isset($_mod))
 		$mod = &$_mod;
 	else
 		global $mod;
-	
+
 	if (!is_array($mod))
 		return false;
-	
+
 	if (isset($action) && $mod['type'] < $action)
 		return false;
-	
+
 	if (!isset($board) || $config['mod']['skip_per_board'])
 		return true;
-	
+
 	if (!isset($mod['boards']))
 		return false;
-	
+
 	if (!in_array('*', $mod['boards']) && !in_array($board, $mod['boards']))
 		return false;
-	
+
 	return true;
 }
 
 function listBoards() {
 	global $config;
-	
+
 	if ($config['cache']['enabled'] && ($boards = cache::get('all_boards')))
 		return $boards;
-	
+
 	$query = query("SELECT * FROM ``boards`` ORDER BY `uri`") or error(db_error());
 	$boards = $query->fetchAll();
-	
+
 	if ($config['cache']['enabled'])
 		cache::set('all_boards', $boards);
-	
+
 	return $boards;
 }
 
 function checkFlood($post) {
 	global $board, $config;
-	
+
 	$query = prepare(sprintf("SELECT * FROM ``posts_%s`` WHERE (`ip` = :ip AND `time` >= :floodtime) OR (`ip` = :ip AND `body` != '' AND `body` = :body AND `time` >= :floodsameiptime) OR (`body` != ''  AND `body` = :body AND `time` >= :floodsametime) LIMIT 1", $board['uri']));
 	$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
 	$query->bindValue(':body', $post['body']);
@@ -554,12 +559,12 @@ function checkFlood($post) {
 	$query->bindValue(':floodsameiptime', time()-$config['flood_time_ip'], PDO::PARAM_INT);
 	$query->bindValue(':floodsametime', time()-$config['flood_time_same'], PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	$flood = (bool) $query->fetch(PDO::FETCH_ASSOC);
-	
+
 	if (event('check-flood', $post))
 		return true;
-	
+
 	return $flood;
 }
 
@@ -599,15 +604,15 @@ function ago($timestamp) {
 
 function displayBan($ban) {
 	global $config;
-	
+
 	if (!$ban['seen']) {
 		$query = prepare("UPDATE ``bans`` SET `seen` = 1 WHERE `id` = :id");
 		$query->bindValue(':id', $ban['id'], PDO::PARAM_INT);
 		$query->execute() or error(db_error($query));
 	}
-	
+
 	$ban['ip'] = $_SERVER['REMOTE_ADDR'];
-	
+
 	// Show banned page and exit
 	die(
 		Element('page.html', array(
@@ -623,15 +628,15 @@ function displayBan($ban) {
 
 function checkBan($board = 0) {
 	global $config;
-	
+
 	if (!isset($_SERVER['REMOTE_ADDR'])) {
 		// Server misconfiguration
 		return;
 	}		
-	
+
 	if (event('check-ban', $board))
 		return true;
-	
+
 	$query = prepare("SELECT `set`, `expires`, `reason`, `board`, `seen`, ``bans``.`id` FROM ``bans`` WHERE (`board` IS NULL OR `board` = :board) AND `ip` = :ip ORDER BY `expires` IS NULL DESC, `expires` DESC, `expires` DESC LIMIT 1");
 	$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
 	$query->bindValue(':board', $board);
@@ -642,7 +647,7 @@ function checkBan($board = 0) {
 		$query->bindValue(':board', $board);
 		$query->execute() or error(db_error($query));
 	}
-	
+
 	if ($query->rowCount() < 1 && $config['ban_cidr'] && !isIPv6()) {
 		// my most insane SQL query yet
 		$query = prepare("SELECT `set`, `expires`, `reason`, `board`, `seen`, ``bans``.`id` FROM ``bans`` WHERE (`board` IS NULL OR `board` = :board)
@@ -658,24 +663,24 @@ function checkBan($board = 0) {
 		$query->bindValue(':board', $board);
 		$query->execute() or error(db_error($query));
 	}
-	
+
 	if ($ban = $query->fetch(PDO::FETCH_ASSOC)) {
 		if ($ban['expires'] && $ban['expires'] < time()) {
 			// Ban expired
 			$query = prepare("DELETE FROM ``bans`` WHERE `id` = :id");
 			$query->bindValue(':id', $ban['id'], PDO::PARAM_INT);
 			$query->execute() or error(db_error($query));
-			
+
 			if ($config['require_ban_view'] && !$ban['seen']) {
 				displayBan($ban);
 			}
-			
+
 			return;
 		}
-		
+
 		displayBan($ban);
 	}
-	
+
 	// I'm not sure where else to put this. It doesn't really matter where; it just needs to be called every now and then to keep the ban list tidy.
 	purge_bans();
 }
@@ -689,47 +694,47 @@ function purge_bans() {
 
 function threadLocked($id) {
 	global $board;
-	
+
 	if (event('check-locked', $id))
 		return true;
-	
+
 	$query = prepare(sprintf("SELECT `locked` FROM ``posts_%s`` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error());
-	
+
 	if (($locked = $query->fetchColumn()) === false) {
 		// Non-existant, so it can't be locked...
 		return false;
 	}
-	
+
 	return (bool)$locked;
 }
 
 function threadSageLocked($id) {
 	global $board;
-	
+
 	if (event('check-sage-locked', $id))
 		return true;
-	
+
 	$query = prepare(sprintf("SELECT `sage` FROM ``posts_%s`` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error());
-	
+
 	if (($sagelocked = $query->fetchColumn()) === false) {
 		// Non-existant, so it can't be locked...
 		return false;
 	}
-	
+
 	return (bool)$sagelocked;
 }
 
 function threadExists($id) {
 	global $board;
-	
+
 	$query = prepare(sprintf("SELECT 1 FROM ``posts_%s`` WHERE `id` = :id AND `thread` IS NULL LIMIT 1", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error());
-	
+
 	if ($query->rowCount()) {
 		return true;
 	}
@@ -740,70 +745,70 @@ function threadExists($id) {
 function post(array $post) {
 	global $pdo, $board;
 	$query = prepare(sprintf("INSERT INTO ``posts_%s`` VALUES ( NULL, :thread, :subject, :email, :name, :trip, :capcode, :body, :body_nomarkup, :time, :time, :thumb, :thumbwidth, :thumbheight, :file, :width, :height, :filesize, :filename, :filehash, :password, :ip, :sticky, :locked, 0, :embed)", $board['uri']));
-	
+
 	// Basic stuff
 	if (!empty($post['subject'])) {
 		$query->bindValue(':subject', $post['subject']);
 	} else {
 		$query->bindValue(':subject', NULL, PDO::PARAM_NULL);
 	}
-	
+
 	if (!empty($post['email'])) {
 		$query->bindValue(':email', $post['email']);
 	} else {
 		$query->bindValue(':email', NULL, PDO::PARAM_NULL);
 	}
-	
+
 	if (!empty($post['trip'])) {
 		$query->bindValue(':trip', $post['trip']);
 	} else {
 		$query->bindValue(':trip', NULL, PDO::PARAM_NULL);
 	}
-	
+
 	$query->bindValue(':name', $post['name']);
 	$query->bindValue(':body', $post['body']);
 	$query->bindValue(':body_nomarkup', $post['body_nomarkup']);
 	$query->bindValue(':time', isset($post['time']) ? $post['time'] : time(), PDO::PARAM_INT);
 	$query->bindValue(':password', $post['password']);		
 	$query->bindValue(':ip', isset($post['ip']) ? $post['ip'] : $_SERVER['REMOTE_ADDR']);
-	
+
 	if ($post['op'] && $post['mod'] && isset($post['sticky']) && $post['sticky']) {
 		$query->bindValue(':sticky', 1, PDO::PARAM_INT);
 	} else {
 		$query->bindValue(':sticky', 0, PDO::PARAM_INT);
 	}
-	
+
 	if ($post['op'] && $post['mod'] && isset($post['locked']) && $post['locked']) {
 		$query->bindValue(':locked', 1, PDO::PARAM_INT);
 	} else {
 		$query->bindValue(':locked', 0, PDO::PARAM_INT);
 	}
-	
+
 	if ($post['mod'] && isset($post['capcode']) && $post['capcode']) {
 		$query->bindValue(':capcode', $post['capcode'], PDO::PARAM_INT);
 	} else {
 		$query->bindValue(':capcode', NULL, PDO::PARAM_NULL);
 	}
-	
+
 	if (!empty($post['embed'])) {
 		$query->bindValue(':embed', $post['embed']);
 	} else {
 		$query->bindValue(':embed', NULL, PDO::PARAM_NULL);
 	}
-	
+
 	if ($post['op']) {
 		// No parent thread, image
 		$query->bindValue(':thread', null, PDO::PARAM_NULL);
 	} else {
 		$query->bindValue(':thread', $post['thread'], PDO::PARAM_INT);
 	}
-	
+
 	if ($post['has_file']) {
 		$query->bindValue(':thumb', $post['thumb']);
 		$query->bindValue(':thumbwidth', $post['thumbwidth'], PDO::PARAM_INT);
 		$query->bindValue(':thumbheight', $post['thumbheight'], PDO::PARAM_INT);
 		$query->bindValue(':file', $post['file']);
-		
+
 		if (isset($post['width'], $post['height'])) {
 			$query->bindValue(':width', $post['width'], PDO::PARAM_INT);
 			$query->bindValue(':height', $post['height'], PDO::PARAM_INT);
@@ -811,7 +816,7 @@ function post(array $post) {
 			$query->bindValue(':width', null, PDO::PARAM_NULL);
 			$query->bindValue(':height', null, PDO::PARAM_NULL);
 		}
-		
+
 		$query->bindValue(':filesize', $post['filesize'], PDO::PARAM_INT);
 		$query->bindValue(':filename', $post['filename']);
 		$query->bindValue(':filehash', $post['filehash']);
@@ -826,21 +831,21 @@ function post(array $post) {
 		$query->bindValue(':filename', null, PDO::PARAM_NULL);
 		$query->bindValue(':filehash', null, PDO::PARAM_NULL);
 	}
-	
+
 	if (!$query->execute()) {
 		undoImage($post);
 		error(db_error($query));
 	}
-	
+
 	return $pdo->lastInsertId();
 }
 
 function bumpThread($id) {
 	global $board;
-	
+
 	if (event('bump', $id))
 		return true;
-	
+
 	$query = prepare(sprintf("UPDATE ``posts_%s`` SET `bump` = :time WHERE `id` = :id AND `thread` IS NULL", $board['uri']));
 	$query->bindValue(':time', time(), PDO::PARAM_INT);
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
@@ -850,16 +855,16 @@ function bumpThread($id) {
 // Remove file from post
 function deleteFile($id, $remove_entirely_if_already=true) {
 	global $board, $config;
-	
+
 	$query = prepare(sprintf("SELECT `thread`,`thumb`,`file` FROM ``posts_%s`` WHERE `id` = :id LIMIT 1", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
 	if (!$post = $query->fetch(PDO::FETCH_ASSOC))
 		error($config['error']['invalidpost']);
-	
+
 	if ($post['file'] == 'deleted' && !$post['thread'])
 		return; // Can't delete OP's image completely.
-	
+
 	$query = prepare(sprintf("UPDATE ``posts_%s`` SET `thumb` = NULL, `thumbwidth` = NULL, `thumbheight` = NULL, `filewidth` = NULL, `fileheight` = NULL, `filesize` = NULL, `filename` = NULL, `filehash` = NULL, `file` = :file WHERE `id` = :id", $board['uri']));
 	if ($post['file'] == 'deleted' && $remove_entirely_if_already) {
 		// Already deleted; remove file fully
@@ -867,17 +872,17 @@ function deleteFile($id, $remove_entirely_if_already=true) {
 	} else {
 		// Delete thumbnail
 		file_unlink($board['dir'] . $config['dir']['thumb'] . $post['thumb']);
-		
+
 		// Delete file
 		file_unlink($board['dir'] . $config['dir']['img'] . $post['file']);
-		
+
 		// Set file to 'deleted'
 		$query->bindValue(':file', 'deleted', PDO::PARAM_INT);
 	}
-	
+
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	if ($post['thread'])
 		buildThread($post['thread']);
 	else
@@ -887,49 +892,49 @@ function deleteFile($id, $remove_entirely_if_already=true) {
 // rebuild post (markup)
 function rebuildPost($id) {
 	global $board;
-	
+
 	$query = prepare(sprintf("SELECT `body_nomarkup`, `thread` FROM ``posts_%s`` WHERE `id` = :id", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	if ((!$post = $query->fetch(PDO::FETCH_ASSOC)) || !$post['body_nomarkup'])
 		return false;
-	
+
 	markup($body = &$post['body_nomarkup']);
-	
+
 	$query = prepare(sprintf("UPDATE ``posts_%s`` SET `body` = :body WHERE `id` = :id", $board['uri']));
 	$query->bindValue(':body', $body);
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	buildThread($post['thread'] ? $post['thread'] : $id);
-	
+
 	return true;
 }
 
 // Delete a post (reply or thread)
 function deletePost($id, $error_if_doesnt_exist=true, $rebuild_after=true) {
 	global $board, $config;
-	
+
 	// Select post and replies (if thread) in one query
 	$query = prepare(sprintf("SELECT `id`,`thread`,`thumb`,`file` FROM ``posts_%s`` WHERE `id` = :id OR `thread` = :id", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	if ($query->rowCount() < 1) {
 		if ($error_if_doesnt_exist)
 			error($config['error']['invalidpost']);
 		else return false;
 	}
-	
+
 	$ids = array();
-	
+
 	// Delete posts and maybe replies
 	while ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 		if (!$post['thread']) {
 			// Delete thread HTML page
 			file_unlink($board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $post['id']));
-			
+
 			$antispam_query = prepare('DELETE FROM ``antispam`` WHERE `board` = :board AND `thread` = :thread');
 			$antispam_query->bindValue(':board', $board['uri']);
 			$antispam_query->bindValue(':thread', $post['id']);
@@ -946,15 +951,15 @@ function deletePost($id, $error_if_doesnt_exist=true, $rebuild_after=true) {
 			// Delete file
 			file_unlink($board['dir'] . $config['dir']['img'] . $post['file']);
 		}
-		
+
 		$ids[] = (int)$post['id'];
-		
+
 	}
-	
+
 	$query = prepare(sprintf("DELETE FROM ``posts_%s`` WHERE `id` = :id OR `thread` = :id", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	$query = prepare("SELECT `board`, `post` FROM ``cites`` WHERE `target_board` = :board AND (`target` = " . implode(' OR `target` = ', $ids) . ")");
 	$query->bindValue(':board', $board['uri']);
 	$query->execute() or error(db_error($query));
@@ -966,10 +971,10 @@ function deletePost($id, $error_if_doesnt_exist=true, $rebuild_after=true) {
 		}
 		rebuildPost($cite['post']);
 	}
-	
+
 	if (isset($tmp_board))
 		openBoard($tmp_board);
-	
+
 	$query = prepare("DELETE FROM ``cites`` WHERE (`target_board` = :board AND `target` = :id) OR (`board` = :board AND `post` = :id)");
 	$query->bindValue(':board', $board['uri']);
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
@@ -978,38 +983,48 @@ function deletePost($id, $error_if_doesnt_exist=true, $rebuild_after=true) {
 	if (isset($rebuild) && $rebuild_after) {
 		buildThread($rebuild);
 	}
-	
+
 	return true;
 }
 
 function clean() {
 	global $board, $config;
 	$offset = round($config['max_pages']*$config['threads_per_page']);
-	
+
 	// I too wish there was an easier way of doing this...
 	$query = prepare(sprintf("SELECT `id` FROM ``posts_%s`` WHERE `thread` IS NULL ORDER BY `sticky` DESC, `bump` DESC LIMIT :offset, 9001", $board['uri']));
 	$query->bindValue(':offset', $offset, PDO::PARAM_INT);
-	
+
 	$query->execute() or error(db_error($query));
 	while ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 		deletePost($post['id']);
 	}
 }
 
+function thread_find_page($thread) {
+	global $config, $board;
+
+	$query = query(sprintf("SELECT `id` FROM ``posts_%s`` WHERE `thread` IS NULL ORDER BY `sticky` DESC, `bump` DESC", $board['uri'])) or error(db_error($query));
+	$threads = $query->fetchAll(PDO::FETCH_COLUMN);
+	if (($index = array_search($thread, $threads)) === false)
+		return false;
+	return floor(($config['threads_per_page'] + $index) / $config['threads_per_page']);
+}
+
 function index($page, $mod=false) {
 	global $board, $config, $debug;
 
 	$body = '';
 	$offset = round($page*$config['threads_per_page']-$config['threads_per_page']);
-	
+
 	$query = prepare(sprintf("SELECT * FROM ``posts_%s`` WHERE `thread` IS NULL ORDER BY `sticky` DESC, `bump` DESC LIMIT :offset,:threads_per_page", $board['uri']));
 	$query->bindValue(':offset', $offset, PDO::PARAM_INT);
 	$query->bindValue(':threads_per_page', $config['threads_per_page'], PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	if ($page == 1 && $query->rowCount() < $config['threads_per_page'])
 		$board['thread_count'] = $query->rowCount();
-	
+
 	if ($query->rowCount() < 1 && $page > 1)
 		return false;
 	while ($th = $query->fetch(PDO::FETCH_ASSOC)) {
@@ -1018,7 +1033,7 @@ function index($page, $mod=false) {
 			$th['thumbwidth'], $th['thumbheight'], $th['file'], $th['filewidth'], $th['fileheight'], $th['filesize'], $th['filename'], $th['ip'],
 			$th['sticky'], $th['locked'], $th['sage'], $th['embed'], $mod ? '?/' : $config['root'], $mod
 		);
-		
+
 		if ($config['cache']['enabled'] && $cached = cache::get("thread_index_{$board['uri']}_{$th['id']}")) {
 			$replies = $cached['replies'];
 			$omitted = $cached['omitted'];
@@ -1027,43 +1042,43 @@ function index($page, $mod=false) {
 			$posts->bindValue(':id', $th['id']);
 			$posts->bindValue(':limit', ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview']), PDO::PARAM_INT);
 			$posts->execute() or error(db_error($posts));
-			
+
 			$replies = array_reverse($posts->fetchAll(PDO::FETCH_ASSOC));
-			
+
 			if (count($replies) == ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview'])) {
 				$count = numPosts($th['id']);
 				$omitted = array('post_count' => $count['replies'], 'image_count' => $count['images']);
 			} else {
 				$omitted = false;
 			}
-			
+
 			if ($config['cache']['enabled'])
 				cache::set("thread_index_{$board['uri']}_{$th['id']}", array(
 					'replies' => $replies,
 					'omitted' => $omitted,
 				));
 		}
-		
+
 		$num_images = 0;
 		foreach ($replies as $po) {
 			if ($po['file'])
 				$num_images++;
-		
+
 			$thread->add(new Post(
 				$po['id'], $th['id'], $po['subject'], $po['email'], $po['name'], $po['trip'], $po['capcode'], $po['body'], $po['time'],
 				$po['thumb'], $po['thumbwidth'], $po['thumbheight'], $po['file'], $po['filewidth'], $po['fileheight'], $po['filesize'],
 				$po['filename'], $po['ip'], $po['embed'], $mod ? '?/' : $config['root'], $mod)
 			);
 		}
-		
+
 		if ($omitted) {
 			$thread->omitted = $omitted['post_count'] - ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview']);
 			$thread->omitted_images = $omitted['image_count'] - $num_images;
 		}
-		
+
 		$body .= $thread->build(true);
 	}
-	
+
 	return array(
 		'board' => $board,
 		'body' => $body,
@@ -1075,10 +1090,10 @@ function index($page, $mod=false) {
 
 function getPageButtons($pages, $mod=false) {
 	global $config, $board;
-	
+
 	$btn = array();
 	$root = ($mod ? '?/' : $config['root']) . $board['dir'];
-	
+
 	foreach ($pages as $num => $page) {
 		if (isset($page['selected'])) {
 			// Previous button
@@ -1092,7 +1107,7 @@ function getPageButtons($pages, $mod=false) {
 					:
 						sprintf($config['file_page'], $num)
 					);
-				
+
 				$btn['prev'] = '<form action="' . ($mod ? '' : $root . $loc) . '" method="get">' .
 					($mod ?
 						'<input type="hidden" name="status" value="301" />' .
@@ -1100,13 +1115,13 @@ function getPageButtons($pages, $mod=false) {
 					:'') .
 				'<input type="submit" value="' . _('Previous') . '" /></form>';
 			}
-			
+
 			if ($num == count($pages) - 1) {
 				// There is no next page.
 				$btn['next'] = _('Next');
 			} else {
 				$loc = ($mod ? '?/' . $board['uri'] . '/' : '') . sprintf($config['file_page'], $num + 2);
-				
+
 				$btn['next'] = '<form action="' . ($mod ? '' : $root . $loc) . '" method="get">' .
 					($mod ?
 						'<input type="hidden" name="status" value="301" />' .
@@ -1116,13 +1131,13 @@ function getPageButtons($pages, $mod=false) {
 			}
 		}
 	}
-	
+
 	return $btn;
 }
 
 function getPages($mod=false) {
 	global $board, $config;
-	
+
 	if (isset($board['thread_count'])) {
 		$count = $board['thread_count'];
 	} else {
@@ -1131,9 +1146,9 @@ function getPages($mod=false) {
 		$count = $query->fetchColumn();
 	}
 	$count = floor(($config['threads_per_page'] + $count - 1) / $config['threads_per_page']);
-	
+
 	if ($count < 1) $count = 1;
-	
+
 	$pages = array();
 	for ($x=0;$x<$count && $x<$config['max_pages'];$x++) {
 		$pages[] = array(
@@ -1141,32 +1156,32 @@ function getPages($mod=false) {
 			'link' => $x==0 ? ($mod ? '?/' : $config['root']) . $board['dir'] . $config['file_index'] : ($mod ? '?/' : $config['root']) . $board['dir'] . sprintf($config['file_page'], $x+1)
 		);
 	}
-	
+
 	return $pages;
 }
 
 function makerobot($body) {
 	global $config;
 	$body = strtolower($body);
-	
+
 	// Leave only letters
 	$body = preg_replace('/[^a-z]/i', '', $body);
 	// Remove repeating characters
 	if ($config['robot_strip_repeating'])
 		$body = preg_replace('/(.)\\1+/', '$1', $body);
-	
+
 	return sha1($body);
 }
 
 function checkRobot($body) {
 	if (empty($body) || event('check-robot', $body))
 		return true;
-	
+
 	$body = makerobot($body);
 	$query = prepare("SELECT 1 FROM ``robot`` WHERE `hash` = :hash LIMIT 1");
 	$query->bindValue(':hash', $body);
 	$query->execute() or error(db_error($query));
-	
+
 	if ($query->fetchColumn()) {
 		return true;
 	}
@@ -1175,7 +1190,7 @@ function checkRobot($body) {
 	$query = prepare("INSERT INTO ``robot`` VALUES (:hash)");
 	$query->bindValue(':hash', $body);
 	$query->execute() or error(db_error($query));
-	
+
 	return false;
 }
 
@@ -1185,25 +1200,25 @@ function numPosts($id) {
 	$query = prepare(sprintf("SELECT COUNT(*) FROM ``posts_%s`` WHERE `thread` = :thread UNION ALL SELECT COUNT(*) FROM ``posts_%s`` WHERE `file` IS NOT NULL AND `thread` = :thread", $board['uri'], $board['uri']));
 	$query->bindValue(':thread', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	$num_posts = $query->fetchColumn();
 	$num_images = $query->fetchColumn();
-	
+
 	return array('replies' => $num_posts, 'images' => $num_images);
 }
 
 function muteTime() {
 	global $config;
-	
+
 	if ($time = event('mute-time'))
 		return $time;
-	
+
 	// Find number of mutes in the past X hours
 	$query = prepare("SELECT COUNT(*) FROM ``mutes`` WHERE `time` >= :time AND `ip` = :ip");
 	$query->bindValue(':time', time()-($config['robot_mute_hour']*3600), PDO::PARAM_INT);
 	$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
 	$query->execute() or error(db_error($query));
-	
+
 	if (!$result = $query->fetchColumn())
 		return 0;
 	return pow($config['robot_mute_multiplier'], $result);
@@ -1215,32 +1230,32 @@ function mute() {
 	$query->bindValue(':time', time(), PDO::PARAM_INT);
 	$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
 	$query->execute() or error(db_error($query));
-	
+
 	return muteTime();
 }
 
 function checkMute() {
 	global $config, $debug;
-	
+
 	if ($config['cache']['enabled']) {
 		// Cached mute?
 		if (($mute = cache::get("mute_${_SERVER['REMOTE_ADDR']}")) && ($mutetime = cache::get("mutetime_${_SERVER['REMOTE_ADDR']}"))) {
 			error(sprintf($config['error']['youaremuted'], $mute['time'] + $mutetime - time()));
 		}
 	}
-	
+
 	$mutetime = muteTime();
 	if ($mutetime > 0) {
 		// Find last mute time
 		$query = prepare("SELECT `time` FROM ``mutes`` WHERE `ip` = :ip ORDER BY `time` DESC LIMIT 1");
 		$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
 		$query->execute() or error(db_error($query));
-		
+
 		if (!$mute = $query->fetch(PDO::FETCH_ASSOC)) {
 			// What!? He's muted but he's not muted...
 			return;
 		}
-		
+
 		if ($mute['time'] + $mutetime > time()) {
 			if ($config['cache']['enabled']) {
 				cache::set("mute_${_SERVER['REMOTE_ADDR']}", $mute, $mute['time'] + $mutetime - time());
@@ -1256,25 +1271,28 @@ function checkMute() {
 }
 
 function buildIndex() {
-	global $board, $config;
-	
+	global $board, $config, $build_pages;
+
 	$pages = getPages();
 	$antibot = create_antibot($board['uri']);
 
-	$page = 1;
-	while ($page <= $config['max_pages'] && $content = index($page)) {
+	for ($page = 1; $page <= $config['max_pages']; $page++) {
 		$filename = $board['dir'] . ($page == 1 ? $config['file_index'] : sprintf($config['file_page'], $page));
 		
+		if ($config['try_smarter'] && isset($build_pages) && count($build_pages) && !in_array($page, $build_pages) && is_file($filename))
+			continue;
+		$content = index($page);
+		if (!$content)
+			break;
+
 		$antibot->reset();
-		
+
 		$content['pages'] = $pages;
 		$content['pages'][$page-1]['selected'] = true;
 		$content['btn'] = getPageButtons($content['pages']);
 		$content['antibot'] = $antibot;
 
 		file_write($filename, Element('index.html', $content));
-		
-		$page++;
 	}
 	if ($page < $config['max_pages']) {
 		for (;$page<=$config['max_pages'];$page++) {
@@ -1286,66 +1304,66 @@ function buildIndex() {
 
 function buildJavascript() {
 	global $config;
-	
+
 	$stylesheets = array();
 	foreach ($config['stylesheets'] as $name => $uri) {
 		$stylesheets[] = array(
 			'name' => addslashes($name),
 			'uri' => addslashes((!empty($uri) ? $config['uri_stylesheets'] : '') . $uri));
 	}
-	
+
 	$script = Element('main.js', array(
 		'config' => $config,
 		'stylesheets' => $stylesheets
 	));
-	
+
 	// Check if we have translation for the javascripts; if yes, we add it to additional javascripts
 	list($pure_locale) = explode(".", $config['locale']);
 	if (file_exists ($jsloc = "inc/locale/$pure_locale/LC_MESSAGES/javascript.js")) {
 		$script = file_get_contents($jsloc) . "\n\n" . $script;
 	}
-	
+
 	if ($config['additional_javascript_compile']) {
 		foreach ($config['additional_javascript'] as $file) {
 			$script .= file_get_contents($file);
 		}
 	}
-	
+
 	if ($config['minify_js']) {
 		require_once 'inc/lib/minify/JSMin.php';		
 		$script = JSMin::minify($script);
 	}
-	
+
 	file_write($config['file_script'], $script);
 }
 
 function checkDNSBL() {
 	global $config;
-	
-	
+
+
 	if (isIPv6())
 		return; // No IPv6 support yet.
-	
+
 	if (!isset($_SERVER['REMOTE_ADDR']))
 		return; // Fix your web server configuration
-	
+
 	if (in_array($_SERVER['REMOTE_ADDR'], $config['dnsbl_exceptions']))
 		return;
-	
+
 	$ipaddr = ReverseIPOctets($_SERVER['REMOTE_ADDR']);
-	
+
 	foreach ($config['dnsbl'] as $blacklist) {
 		if (!is_array($blacklist))
 			$blacklist = array($blacklist);
-		
+
 		if (($lookup = str_replace('%', $ipaddr, $blacklist[0])) == $blacklist[0])
 			$lookup = $ipaddr . '.' . $blacklist[0];
-		
+
 		if (!$ip = DNS($lookup))
 			continue; // not in list
-		
+
 		$blacklist_name = isset($blacklist[2]) ? $blacklist[2] : $blacklist[0];
-		
+
 		if (!isset($blacklist[1])) {
 			// If you're listed at all, you're blocked.
 			error(sprintf($config['error']['dnsbl'], $blacklist_name));
@@ -1374,7 +1392,7 @@ function ReverseIPOctets($ip) {
 
 function wordfilters(&$body) {
 	global $config;
-	
+
 	foreach ($config['wordfilters'] as $filter) {
 		if (isset($filter[2]) && $filter[2]) {
 			$body = preg_replace($filter[0], $filter[1], $body);
@@ -1386,29 +1404,29 @@ function wordfilters(&$body) {
 
 function quote($body, $quote=true) {
 	global $config;
-	
+
 	$body = str_replace('<br/>', "\n", $body);
-	
+
 	$body = strip_tags($body);
-	
+
 	$body = preg_replace("/(^|\n)/", '$1&gt;', $body);
-	
+
 	$body .= "\n";
-	
+
 	if ($config['minify_html'])
 		$body = str_replace("\n", '&#010;', $body);
-	
+
 	return $body;
 }
 
 function markup_url($matches) {
 	global $config, $markup_urls;
-	
+
 	$url = $matches[1];
 	$after = $matches[2];
-	
+
 	$markup_urls[] = $url;
-	
+
 	return '<a target="_blank" rel="nofollow" href="'. $config['link_prefix'] . $url . '">' . $url . '</a>' . $after;
 }
 
@@ -1416,36 +1434,36 @@ function unicodify($body) {
 	$body = str_replace('...', '&hellip;', $body);
 	$body = str_replace('&lt;--', '&larr;', $body);
 	$body = str_replace('--&gt;', '&rarr;', $body);
-	
+
 	// En and em- dashes are rendered exactly the same in
 	// most monospace fonts (they look the same in code
 	// editors).
 	$body = str_replace('---', '&mdash;', $body); // em dash
 	$body = str_replace('--', '&ndash;', $body); // en dash
-	
+
 	return $body;
 }
 
 function markup(&$body, $track_cites = false) {
 	global $board, $config, $markup_urls;
-	
+
 	$body = str_replace("\r", '', $body);
 	$body = utf8tohtml($body);
-	
+
 	if (preg_match_all('@&lt;tinyboard ([\w\s]+)&gt;(.+?)&lt;/tinyboard&gt;@um', $body, $modifiers, PREG_SET_ORDER | PREG_OFFSET_CAPTURE)) {
 		$skip_chars = 0;
 		$body_tmp = $body;
 		$end_markup = false;
-		
+
 		foreach ($modifiers as $modifier) {
 			// preg_match_all is not multibyte-safe
 			foreach ($modifier as &$match) {
 				$match[1] = mb_strlen(substr($body_tmp, 0, $match[1]));
 			}
-			
+
 			$modifier['type'] = $modifier[1][0];
 			$modifier['content'] = $modifier[2][0];
-			
+
 			if ($modifier['type'] == 'ban message') {
 				// Public ban message
 				$replacement = sprintf($config['mod']['ban_message'], html_entity_decode($modifier['content']));
@@ -1463,21 +1481,21 @@ function markup(&$body, $track_cites = false) {
 				// Unknown
 				$replacement = '';
 			}
-			
+
 			if (!$end_markup) {
 				$body = mb_substr_replace($body, $replacement, $modifier[0][1] + $skip_chars, mb_strlen($modifier[0][0]));
 				$skip_chars += mb_strlen($replacement) - mb_strlen($modifier[0][0]);
 			}
 		}
-		
+
 		if ($end_markup) {
 			return array();
 		}
 	}
-	
+
 	if (mysql_version() < 50503)
 		$body = mb_encode_numericentity($body, array(0x010000, 0xffffff, 0, 0xffffff), 'UTF-8');
-	
+
 	foreach ($config['markup'] as $markup) {
 		if (is_string($markup[1])) {
 			$body = preg_replace($markup[0], $markup[1], $body);
@@ -1485,108 +1503,108 @@ function markup(&$body, $track_cites = false) {
 			$body = preg_replace_callback($markup[0], $markup[1], $body);
 		}
 	}
-	
+
 	if ($config['markup_urls']) {
 		$markup_urls = array();
-		
+
 		$body = preg_replace_callback(
 				'/((?:https?:\/\/|ftp:\/\/|irc:\/\/)[^\s<>()"]+?(?:\([^\s<>()"]*?\)[^\s<>()"]*?)*)((?:\s|<|>|"|\.||\]|!|\?|,|&#44;|&quot;)*(?:[\s<>()"]|$))/',
 				'markup_url',
 				$body,
 				-1,
 				$num_links);
-		
+
 		if ($num_links > $config['max_links'])
 			error($config['error']['toomanylinks']);
 	}
-	
+
 	if ($config['auto_unicode']) {
 		$body = unicodify($body);
-	
+
 		if ($config['markup_urls']) {
 			foreach ($markup_urls as &$url) {
 				$body = str_replace(unicodify($url), $url, $body);
 			}
 		}
 	}
-	
+
 	// replace tabs with 8 spaces
 	$body = str_replace("\t", '        ', $body);
-	
+
 	$tracked_cites = array();
-	
+
 	// Cites
 	if (isset($board) && preg_match_all('/(^|\s)&gt;&gt;(\d+?)([\s,.)?]|$)/m', $body, $cites, PREG_SET_ORDER | PREG_OFFSET_CAPTURE)) {
 		if (count($cites[0]) > $config['max_cites']) {
 			error($config['error']['toomanycites']);
 		}
-		
+
 		$skip_chars = 0;
 		$body_tmp = $body;
-		
+
 		foreach ($cites as $matches) {
 			$cite = $matches[2][0];
 			$query = prepare(sprintf("SELECT `thread`,`id` FROM ``posts_%s`` WHERE `id` = :id LIMIT 1", $board['uri']));
 			$query->bindValue(':id', $cite);
 			$query->execute() or error(db_error($query));
-			
+
 			// preg_match_all is not multibyte-safe
 			foreach ($matches as &$match) {
 				$match[1] = mb_strlen(substr($body_tmp, 0, $match[1]));
 			}
-			
+
 			if ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 				$replacement = '<a onclick="highlightReply(\''.$cite.'\');" href="' .
 					$config['root'] . $board['dir'] . $config['dir']['res'] . ($post['thread']?$post['thread']:$post['id']) . '.html#' . $cite . '">' .
 						'&gt;&gt;' . $cite .
 						'</a>';
-				
+
 				$body = mb_substr_replace($body, $matches[1][0] . $replacement . $matches[3][0], $matches[0][1] + $skip_chars, mb_strlen($matches[0][0]));
 				$skip_chars += mb_strlen($matches[1][0] . $replacement . $matches[3][0]) - mb_strlen($matches[0][0]);
-												
+
 				if ($track_cites && $config['track_cites'])
 					$tracked_cites[] = array($board['uri'], $post['id']);
 			}
 		}
 	}
-	
+
 	// Cross-board linking
 	if (preg_match_all('/(^|\s)&gt;&gt;&gt;\/(' . $config['board_regex'] . 'f?)\/(\d+)?([\s,.)?]|$)/um', $body, $cites, PREG_SET_ORDER | PREG_OFFSET_CAPTURE)) {
 		if (count($cites[0]) > $config['max_cites']) {
 			error($config['error']['toomanycross']);
 		}
-		
+
 		$skip_chars = 0;
 		$body_tmp = $body;
-		
+
 		foreach ($cites as $matches) {
 			$_board = $matches[2][0];
 			$cite = @$matches[3][0];
-			
+
 			// preg_match_all is not multibyte-safe
 			foreach ($matches as &$match) {
 				$match[1] = mb_strlen(substr($body_tmp, 0, $match[1]));
 			}
-			
+
 			// Temporarily store board information because it will be overwritten
 			$tmp_board = $board['uri'];
-			
+
 			// Check if the board exists, and load settings
 			if (openBoard($_board)) {
 				if ($cite) {
 					$query = prepare(sprintf("SELECT `thread`,`id` FROM ``posts_%s`` WHERE `id` = :id LIMIT 1", $board['uri']));
 					$query->bindValue(':id', $cite);
 					$query->execute() or error(db_error($query));
-					
+
 					if ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 						$replacement = '<a onclick="highlightReply(\''.$cite.'\');" href="' .
 							$config['root'] . $board['dir'] . $config['dir']['res'] . ($post['thread']?$post['thread']:$post['id']) . '.html#' . $cite . '">' .
 								'&gt;&gt;&gt;/' . $_board . '/' . $cite .
 								'</a>';
-						
+
 						$body = mb_substr_replace($body, $matches[1][0] . $replacement . $matches[4][0], $matches[0][1] + $skip_chars, mb_strlen($matches[0][0]));
 						$skip_chars += mb_strlen($matches[1][0] . $replacement . $matches[4][0]) - mb_strlen($matches[0][0]);
-						
+
 						if ($track_cites && $config['track_cites'])
 							$tracked_cites[] = array($board['uri'], $post['id']);
 					}
@@ -1599,19 +1617,19 @@ function markup(&$body, $track_cites = false) {
 					$skip_chars += mb_strlen($matches[1][0] . $replacement . $matches[4][0]) - mb_strlen($matches[0][0]);
 				}
 			}
-			
+
 			// Restore main board settings
 			openBoard($tmp_board);
 		}
 	}
-	
+
 	$body = preg_replace("/^\s*&gt;.*$/m", '<span class="quote">$0</span>', $body);
-	
+
 	if ($config['strip_superfluous_returns'])
 		$body = preg_replace('/\s+$/', '', $body);
-	
+
 	$body = preg_replace("/\n/", '<br/>', $body);
-	
+
 	return $tracked_cites;
 }
 
@@ -1652,41 +1670,41 @@ function strip_combining_chars($str) {
 	foreach ($chars as $char) {
 		$o = 0;
 		$ord = ordutf8($char, $o);
-		
+
 		if ($ord >= 768 && $ord <= 879)
 			continue;
-		
+
 		if ($ord >= 7616 && $ord <= 7679)
 			continue;
-		
+
 		if ($ord >= 8400 && $ord <= 8447)
 			continue;
-		
+
 		if ($ord >= 65056 && $ord <= 65071)
 			continue;
-		
+
 		$str .= $char;
 	}
 	return $str;
 }
 
 function buildThread($id, $return = false, $mod = false) {
-	global $board, $config;
+	global $board, $config, $build_pages;
 	$id = round($id);
-	
+
 	if (event('build-thread', $id))
 		return;
-	
+
 	if ($config['cache']['enabled'] && !$mod) {
 		// Clear cache
 		cache::delete("thread_index_{$board['uri']}_{$id}");
 		cache::delete("thread_{$board['uri']}_{$id}");
 	}
-	
+
 	$query = prepare(sprintf("SELECT * FROM ``posts_%s`` WHERE (`thread` IS NULL AND `id` = :id) OR `thread` = :id ORDER BY `thread`,`id`", $board['uri']));
 	$query->bindValue(':id', $id, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	while ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 		if (!isset($thread)) {
 			$thread = new Thread(
@@ -1702,11 +1720,11 @@ function buildThread($id, $return = false, $mod = false) {
 			);
 		}
 	}
-	
+
 	// Check if any posts were found
 	if (!isset($thread))
 		error($config['error']['nonexistant']);
-	
+
 	$body = Element('thread.html', array(
 		'board' => $board,
 		'thread' => $thread,
@@ -1719,6 +1737,9 @@ function buildThread($id, $return = false, $mod = false) {
 		'return' => ($mod ? '?' . $board['url'] . $config['file_index'] : $config['root'] . $board['dir'] . $config['file_index'])
 	));
 
+	if ($config['try_smarter'] && !$mod)
+		$build_pages[] = thread_find_page($id);
+
 	if ($return)
 		return $body;
 
@@ -1743,35 +1764,35 @@ function buildThread($id, $return = false, $mod = false) {
 
 function poster_id($ip, $thread) {
 	global $config;
-	
+
 	if ($id = event('poster-id', $ip, $thread))
 		return $id;
-	
+
 	// Confusing, hard to brute-force, but simple algorithm
 	return substr(sha1(sha1($ip . $config['secure_trip_salt'] . $thread) . $config['secure_trip_salt']), 0, $config['poster_id_length']);
 }
 
 function generate_tripcode($name) {
 	global $config;
-	
+
 	if ($trip = event('tripcode', $name))
 		return $trip;
-	
+
 	if (!preg_match('/^([^#]+)?(##|#)(.+)$/', $name, $match))
 		return array($name);
-	
+
 	$name = $match[1];
 	$secure = $match[2] == '##';
 	$trip = $match[3];
-	
+
 	// convert to SHIT_JIS encoding
 	$trip = mb_convert_encoding($trip, 'Shift_JIS', 'UTF-8');
-	
+
 	// generate salt
 	$salt = substr($trip . 'H..', 1, 2);
 	$salt = preg_replace('/[^.-z]/', '.', $salt);
 	$salt = strtr($salt, ':;<=>?@[\]^_`', 'ABCDEFGabcdef');
-	
+
 	if ($secure) {
 		if (isset($config['custom_tripcode']["##{$trip}"]))
 			$trip = $config['custom_tripcode']["##{$trip}"];
@@ -1783,10 +1804,10 @@ function generate_tripcode($name) {
 		else
 			$trip = '!' . substr(crypt($trip, $salt), -10);
 	}
-	
+
 	return array($name, $trip);
 }
-	
+
 // Highest common factor
 function hcf($a, $b){
 	$gcd = 1;
@@ -1812,7 +1833,7 @@ function fraction($numerator, $denominator, $sep) {
 	$gcf = hcf($numerator, $denominator);
 	$numerator = $numerator / $gcf;
 	$denominator = $denominator / $gcf;
-	
+
 	return "{$numerator}{$sep}{$denominator}";
 }
 
@@ -1821,11 +1842,11 @@ function getPostByHash($hash) {
 	$query = prepare(sprintf("SELECT `id`,`thread` FROM ``posts_%s`` WHERE `filehash` = :hash", $board['uri']));
 	$query->bindValue(':hash', $hash, PDO::PARAM_STR);
 	$query->execute() or error(db_error($query));
-	
+
 	if ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 		return $post;
 	}
-	
+
 	return false;
 }
 
@@ -1835,18 +1856,18 @@ function getPostByHashInThread($hash, $thread) {
 	$query->bindValue(':hash', $hash, PDO::PARAM_STR);
 	$query->bindValue(':thread', $thread, PDO::PARAM_INT);
 	$query->execute() or error(db_error($query));
-	
+
 	if ($post = $query->fetch(PDO::FETCH_ASSOC)) {
 		return $post;
 	}
-	
+
 	return false;
 }
 
 function undoImage(array $post) {
 	if (!$post['has_file'])
 		return;
-	
+
 	if (isset($post['file']))
 		file_unlink($post['file']);
 	if (isset($post['thumb']))
@@ -1855,11 +1876,11 @@ function undoImage(array $post) {
 
 function rDNS($ip_addr) {
 	global $config;
-	
+
 	if ($config['cache']['enabled'] && ($host = cache::get('rdns_' . $ip_addr))) {
 		return $host;
 	}
-	
+
 	if (!$config['dns_system']) {
 		$host = gethostbyaddr($ip_addr);
 	} else {
@@ -1869,20 +1890,20 @@ function rDNS($ip_addr) {
 		else
 			$host = $ip_addr;
 	}
-	
+
 	if ($config['cache']['enabled'])
 		cache::set('rdns_' . $ip_addr, $host, 3600);
-	
+
 	return $host;
 }
 
 function DNS($host) {
 	global $config;
-	
+
 	if ($config['cache']['enabled'] && ($ip_addr = cache::get('dns_' . $host))) {
 		return $ip_addr;
 	}
-	
+
 	if (!$config['dns_system']) {
 		$ip_addr = gethostbyname($host);
 		if ($ip_addr == $host)
@@ -1894,9 +1915,9 @@ function DNS($host) {
 		else
 			$ip_addr = false;
 	}
-	
+
 	if ($config['cache']['enabled'])
 		cache::set('dns_' . $host, $ip_addr, 3600);
-	
+
 	return $ip_addr;
 }