leftypol/inc/functions.php

<?php
	if($_SERVER['SCRIPT_FILENAME'] == str_replace('\\', '/', __FILE__)) {
		// You cannot request this file directly.
		header('Location: ../', true, 302);
		exit;
	}
	
	require 'inc/events.php';
	require 'lib/gettext/gettext.inc';
	
	register_shutdown_function('fatal_error_handler');
	mb_internal_encoding('UTF-8');
	loadConfig();
	
	function loadConfig() {
		global $board, $config, $__ip, $debug, $__version;
		
		reset_events();
		
		if(!defined('PHP_VERSION_ID')) {
			$version = explode('.', PHP_VERSION);
			define('PHP_VERSION_ID', ($version[0] * 10000 + $version[1] * 100 + $version[2]));
		}

		if(!isset($_SERVER['REMOTE_ADDR']))
			$_SERVER['REMOTE_ADDR'] = '0.0.0.0';
		
		$arrays = Array('db', 'cache', 'cookies', 'error', 'dir', 'mod', 'spam', 'flood_filters', 'wordfilters', 'custom_capcode', 'custom_tripcode', 'dnsbl', 'dnsbl_exceptions', 'remote', 'allowed_ext', 'allowed_ext_files', 'file_icons', 'footer', 'stylesheets', 'additional_javascript', 'markup');
		
		$config = Array();
		foreach($arrays as $key) {
			$config[$key] = Array();
		}
		
		require 'inc/config.php';
		if (file_exists('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());
				$debug['start'] = microtime(true);
			}
		}
		
		date_default_timezone_set($config['timezone']);
		
		if(!isset($config['blotter']))
			$config['blotter'] = false;
		
		if(!isset($config['post_url']))
			$config['post_url'] = $config['root'] . $config['file_post'];
		
		if(!isset($config['referer_match']))
			if(isset($_SERVER['HTTP_HOST'])) {
				$config['referer_match'] = '/^' .
					(preg_match($config['url_regex'], $config['root']) ? '' :
						'https?:\/\/' . $_SERVER['HTTP_HOST']) .
						preg_quote($config['root'], '/') .
					'(' .
							str_replace('%s', '\w+', preg_quote($config['board_path'], '/')) .
							'(' .
								preg_quote($config['file_index'], '/') . '|' .
								str_replace('%d', '\d+', preg_quote($config['file_page'])) .
							')?' .
						'|' .
							str_replace('%s', '\w+', preg_quote($config['board_path'], '/')) .
							preg_quote($config['dir']['res'], '/') .
							str_replace('%d', '\d+', preg_quote($config['file_page'], '/')) .
						'|' .
							preg_quote($config['file_mod'], '/') . '\?\/.+' .
					')([#?](.+)?)?$/i';
			} else {
				// CLI mode
				$config['referer_match'] = '//';
			}
		if(!isset($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']))
			$config['image_locked'] = $config['dir']['static'] . 'locked.gif';
		if(!isset($config['image_bumplocked']))
			$config['image_bumplocked'] = $config['dir']['static'] . 'sage.gif';
		if(!isset($config['image_deleted']))
			$config['image_deleted'] = $config['dir']['static'] . 'deleted.png';
		if(!isset($config['image_zip']))
			$config['image_zip'] = $config['dir']['static'] . 'zip.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']);
		}

		if($config['verbose_errors']) {
			error_reporting(E_ALL);
			ini_set('display_errors', 1);
		}
		
		// 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 = function_exists('error') ? 'error' : 'basic_error_function_because_the_other_isnt_loaded_yet';
			$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');
			textdomain('tinyboard');
		} else {
			_bindtextdomain('tinyboard', './inc/locale');
			_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'])
			require_once 'inc/cache.php';
	}
	
	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">' .
				'body{text-align:center;font-family:arial, helvetica, sans-serif;font-size:10pt;}' .
				'p{padding:0;margin:20px 0;}' .
				'p.c{font-size:11px;}' .
			'</style></head>' .
			'<body><h2>Error</h2>' . $message . '<hr/>' .
			'<p class="c">This alternative error page is being displayed because the other couldn\'t be found or hasn\'t loaded yet.</p></body></html>');
	}
	
	function fatal_error_handler() { 
		if($error = error_get_last()) {
			if($error['type'] == E_ERROR) {
				if(function_exists('error')) {
					error('Caught fatal error: ' . $error['message'] . ' in <strong>' . $error['file'] . '</strong> on line ' . $error['line'], LOG_ERR);
				} else {
					basic_error_function_because_the_other_isnt_loaded_yet('Caught fatal error: ' . $error['message'] . ' in ' . $error['file'] . ' on line ' . $error['line'], LOG_ERR);
				}
			}
		}
	}
	
	function _syslog($priority, $message) {
		if(	isset($_SERVER['REMOTE_ADDR']) &&
			isset($_SERVER['REQUEST_METHOD']) &&
			isset($_SERVER['REQUEST_URI'])) {
			// CGI
			syslog($priority, $message . ' - client: ' . $_SERVER['REMOTE_ADDR'] . ', request: "' . $_SERVER['REQUEST_METHOD'] . ' ' . $_SERVER['REQUEST_URI'] . '"');
		} else {
			syslog($priority, $message);
		}
	}
	
	function loadThemeConfig($_theme) {
		global $config;
		
		if(!file_exists($config['dir']['themes'] . '/' . $_theme . '/info.php'))
			return false;
		
		// Load theme information into $theme
		include $config['dir']['themes'] . '/' . $_theme . '/info.php';
		return $theme;
	}
	
	function rebuildTheme($theme, $action) {
		global $config, $_theme;
		$_theme = $theme;
		
		$theme = loadThemeConfig($_theme);
		
		if(file_exists($config['dir']['themes'] . '/' . $_theme . '/theme.php')) {
			require_once $config['dir']['themes'] . '/' . $_theme . '/theme.php';
			$theme['build_function']($action, themeSettings($_theme));
		}
	}
	
	function rebuildThemes($action) {
		global $config, $_theme;
		
		// List themes
		$query = query("SELECT `theme` FROM `theme_settings` WHERE `name` IS NULL AND `value` IS NULL") or error(db_error());
		while($theme = $query->fetch()) {
			rebuildTheme($theme['theme'], $action);
		}
	}
	
	function themeSettings($theme) {
		$query = prepare("SELECT `name`, `value` FROM `theme_settings` WHERE `theme` = :theme AND `name` IS NOT NULL");
		$query->bindValue(':theme', $theme);
		$query->execute() or error(db_error($query));
		
		$settings = Array();
		while($s = $query->fetch()) {
			$settings[$s['name']] = $s['value'];
		}
		
		return $settings;
	}
	
	function sprintf3($str, $vars, $delim = '%') {
		$replaces = array();
		foreach($vars as $k => $v) {
			$replaces[$delim . $k . $delim] = $v;
		}
		return str_replace(array_keys($replaces),
		                   array_values($replaces), $str);
	}
	
	function setupBoard($array) {
		global $board, $config;
		
		$board = Array(
		'id' => $array['id'],
		'uri' => $array['uri'],
		'name' => $array['title'],
		'title' => $array['subtitle']);
		
		$board['dir'] = sprintf($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'] . $config['dir']['img']))
			@mkdir($board['dir'] . $config['dir']['img'], 0777) or error("Couldn't create " . $board['dir'] . $config['dir']['img'] . ". Check permissions.", true);
		if(!file_exists($board['dir'] . $config['dir']['thumb']))
			@mkdir($board['dir'] . $config['dir']['thumb'], 0777) or error("Couldn't create " . $board['dir'] . $config['dir']['img'] . ". Check permissions.", true);
		if(!file_exists($board['dir'] . $config['dir']['res']))
			@mkdir($board['dir'] . $config['dir']['res'], 0777) or error("Couldn't create " . $board['dir'] . $config['dir']['img'] . ". Check permissions.", true);
	}
	
	function openBoard($uri) {
		global $config;
		if($config['cache']['enabled'] && ($board = cache::get('board_' . $uri))) {
			setupBoard($board);
			return true;
		}
		
		$query = prepare("SELECT * FROM `boards` WHERE `uri` = :uri LIMIT 1");
		$query->bindValue(':uri', $uri);
		$query->execute() or error(db_error($query));
		
		if($board = $query->fetch()) {
			if($config['cache']['enabled'])
				cache::set('board_' . $uri, $board);
			setupBoard($board);
			return true;
		} else return false;
	}
	
	function boardTitle($uri) {
		global $config;
		if($config['cache']['enabled'] && ($board = cache::get('board_' . $uri))) {
			return $board['title'];
		}
		
		$query = prepare("SELECT `title` FROM `boards` WHERE `uri` = :uri LIMIT 1");
		$query->bindValue(':uri', $uri);
		$query->execute() or error(db_error($query));
		
		if($title = $query->fetch()) {
			return $title['title'];
		} else return false;
	}
	
	function purge($uri) {
		global $config, $debug;
		if(preg_match($config['referer_match'], $config['root'])) {
			$uri = (str_replace('\\', '/', dirname($_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];
			$http_host = isset($purge[2]) ? $purge[2] : $_SERVER['HTTP_HOST'];
			$request = "PURGE {$uri} HTTP/1.1\r\nHost: {$http_host}\r\nUser-Agent: Tinyboard\r\nConnection: Close\r\n\r\n";
			if($fp = fsockopen($host, $port, $errno, $errstr, $config['purge_timeout'])) {
				fwrite($fp, $request);
				fclose($fp);
			} else {
				// Cannot connect?
				error('Could not PURGE for ' . $host);
			}
		}
	}
	
	function file_write($path, $data, $simple = false, $skip_purge = false) {
		global $config;
		
		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;
			} else {
				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(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']) && isset($_SERVER['HTTP_HOST'])) {
			// Purge cache
			if(basename($path) == $config['file_index']) {
				// Index file (/index.html); purge "/" as well
				$uri = dirname($path);
				// root
				if($uri == '.')
					$uri = '';
				else
					$uri .= '/';
				purge($uri);
			}
			purge($path);
		}
		
		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
			if(basename($path) == $config['file_index']) {
				// Index file (/index.html); purge "/" as well
				$uri = dirname($path);
				// root
				if($uri == '.')
					$uri = '';
				else
					$uri .= '/';
				purge($uri);
			}
			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'], PDO::PARAM_INT);
		$query->bindValue(':floodtime', time()-$config['flood_time'], PDO::PARAM_INT);
		$query->bindValue(':floodsameiptime', time()-$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();
		
		if(event('check-flood', $post))
			return true;
		
		return $flood;
	}
	
	function until($timestamp) {
		$difference = $timestamp - time();
		if($difference < 60) {
			return $difference . ' second' . ($difference != 1 ? 's' : '');
		} elseif($difference < 60*60) {
			return ($num = round($difference/(60))) . ' minute' . ($num != 1 ? 's' : '');
		} elseif($difference < 60*60*24) {
			return ($num = round($difference/(60*60))) . ' hour' . ($num != 1 ? 's' : '');
		} elseif($difference < 60*60*24*7) {
			return ($num = round($difference/(60*60*24))) . ' day' . ($num != 1 ? 's' : '');
		} elseif($difference < 60*60*24*365) {
			return ($num = round($difference/(60*60*24*7))) . ' week' . ($num != 1 ? 's' : '');
		} else {
			return ($num = round($difference/(60*60*24*365))) . ' year' . ($num != 1 ? 's' : '');
		}
	}
	
	function ago($timestamp) {
		$difference = time() - $timestamp;
		if($difference < 60) {
			return $difference . ' second' . ($difference != 1 ? 's' : '');
		} elseif($difference < 60*60) {
			return ($num = round($difference/(60))) . ' minute' . ($num != 1 ? 's' : '');
		} elseif($difference < 60*60*24) {
			return ($num = round($difference/(60*60))) . ' hour' . ($num != 1 ? 's' : '');
		} elseif($difference < 60*60*24*7) {
			return ($num = round($difference/(60*60*24))) . ' day' . ($num != 1 ? 's' : '');
		} elseif($difference < 60*60*24*365) {
			return ($num = round($difference/(60*60*24*7))) . ' week' . ($num != 1 ? 's' : '');
		} else {
			return ($num = round($difference/(60*60*24*365))) . ' year' . ($num != 1 ? 's' : '');
		}
	}
	
	function displayBan($ban) {
		global $config;
		
		$ban['ip'] = $_SERVER['REMOTE_ADDR'];
		
		// Show banned page and exit
		die(
			Element('page.html', Array(
				'title' => 'Banned!',
				'config' => $config,
				'body' => Element('banned.html', Array(
					'config' => $config,
					'ban' => $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`, `uri`, `bans`.`id` FROM `bans` LEFT JOIN `boards` ON `boards`.`id` = `board` WHERE (`board` IS NULL OR `uri` = :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);
		$query->execute() or error(db_error($query));
		if($query->rowCount() < 1 && $config['ban_range']) {
			$query = prepare("SELECT `set`, `expires`, `reason`, `board`, `uri`, `bans`.`id` FROM `bans` LEFT JOIN `boards` ON `boards`.`id` = `board` WHERE (`board` IS NULL OR `uri` = :board) AND :ip LIKE REPLACE(REPLACE(`ip`, '%', '!%'), '*', '%') ESCAPE '!' ORDER BY `expires` IS NULL DESC, `expires` DESC LIMIT 1");
			$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
			$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`, `uri`, `bans`.`id` FROM `bans` LEFT JOIN `boards` ON `boards`.`id` = `board` WHERE (`board` IS NULL OR `uri` = :board)
				AND (					
					`ip` REGEXP '^(\[0-9]+\.\[0-9]+\.\[0-9]+\.\[0-9]+\)\/(\[0-9]+)$'
						AND
					:ip >= INET_ATON(SUBSTRING_INDEX(`ip`, '/', 1))
						AND
					:ip < INET_ATON(SUBSTRING_INDEX(`ip`, '/', 1)) + POW(2, 32 - SUBSTRING_INDEX(`ip`, '/', -1))
				)
				ORDER BY `expires` IS NULL DESC, `expires` DESC LIMIT 1");
			$query->bindValue(':ip', ip2long($_SERVER['REMOTE_ADDR']));
			$query->bindValue(':board', $board);
			$query->execute() or error(db_error($query));
		}
		
		if($ban = $query->fetch()) {
			if($ban['expires'] && $ban['expires'] < time()) {
				// Ban expired
				$query = prepare("DELETE FROM `bans` WHERE `id` = :id LIMIT 1");
				$query->bindValue(':id', $ban['id'], PDO::PARAM_INT);
				$query->execute() or error(db_error($query));
				
				return;
			}
			
			displayBan($ban);
		}
	}
	
	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(!$post = $query->fetch()) {
			// Non-existant, so it can't be locked...
			return false;
		}
		
		return (bool)$post['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(!$post = $query->fetch()) {
			// Non-existant, so it can't be locked...
			return false;
		}
		
		return (bool) $post['sage'];
	}
	
	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;
		} else return false;
	}
	
	function post($post, $OP) {
		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['mod'] && $post['sticky']) {
			$query->bindValue(':sticky', 1, PDO::PARAM_INT);
		} else {
			$query->bindValue(':sticky', 0, PDO::PARAM_INT);
		}
		
		if($post['mod'] && $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($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);
			} else {
				$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']);
		} else {
			$query->bindValue(':thumb', null, PDO::PARAM_NULL);
			$query->bindValue(':thumbwidth', null, PDO::PARAM_NULL);
			$query->bindValue(':thumbheight', null, PDO::PARAM_NULL);
			$query->bindValue(':file', null, PDO::PARAM_NULL);
			$query->bindValue(':width', null, PDO::PARAM_NULL);
			$query->bindValue(':height', null, PDO::PARAM_NULL);
			$query->bindValue(':filesize', null, PDO::PARAM_NULL);
			$query->bindValue(':filename', null, PDO::PARAM_NULL);
			$query->bindValue(':filehash', null, PDO::PARAM_NULL);
		}
		
		$query->execute() or error(db_error($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);
		$query->execute() or error(db_error($query));
	}
	
	// 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($query->rowCount() < 1) {
			error($config['error']['invalidpost']);
		}
		
		$post = $query->fetch();
		
		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
			$query->bindValue(':file', null, PDO::PARAM_NULL);
		} else {
			// Delete thumbnail
			file_unlink($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);
		}
		// Update database
		
		$query->bindValue(':id', $id, PDO::PARAM_INT);
		$query->execute() or error(db_error($query));
		
		if($post['thread'])
			buildThread($post['thread']);
	}
	
	// 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())
			return false;
		
		if(!$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));