Source code of Leftypol imageboard
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55 KiB

<?php
if($_SERVER['SCRIPT_FILENAME'] == str_replace('\\', '/', __FILE__)) {
// You cannot request this file directly.
header('Location: ../', true, 302);
exit;
}
loadConfig();
function loadConfig() {
global $board, $config, $__ip;
require 'config.php';
if (file_exists('inc/instance-config.php')) {
require 'instance-config.php';
}
if(isset($board['dir']) && file_exists($board['dir'] . '/config.php')) {
require $board['dir'] . '/config.php';
}
if(!isset($config['url_stylesheet']))
$config['url_stylesheet'] = $config['root'] . 'style.css';
if(!isset($config['url_javascript']))
$config['url_javascript'] = $config['root'] . 'main.js';
if(!isset($config['post_url']))
$config['post_url'] = $config['root'] . $config['file_post'];
if(!isset($config['url_match']))
$config['url_match'] = '/^' .
(preg_match($config['url_regex'], $config['root']) ? '' :
(isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] && $_SERVER['HTTPS'] != 'off' ? 'https' : 'http') .
':\/\/'.$_SERVER['HTTP_HOST']) .
preg_quote($config['root'], '/') .
'(' .
str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
'|' .
str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
preg_quote($config['file_index'], '/') .
'|' .
str_replace('%s', '\w{1,8}', preg_quote($config['board_path'], '/')) .
str_replace('%d', '\d+', preg_quote($config['file_page'], '/')) .
'|' .
preg_quote($config['file_mod'], '/') .
'\?\/.+' .
')$/i';
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_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'];
else
$config['uri_thumb'] = sprintf($config['uri_thumb'], $board['dir']);
if(!isset($config['uri_img']))
$config['uri_img'] = $config['root'] . $board['dir'] . $config['dir']['img'];
else
$config['uri_img'] = sprintf($config['uri_img'], $board['dir']);
if(!isset($config['uri_stylesheets']))
$config['uri_stylesheets'] = $config['root'];
if($config['root_file']) {
chdir($config['root_file']);
}
if($config['verbose_errors']) {
error_reporting(E_ALL);
ini_set('display_errors', 1);
}
if($config['ipv6_ipv4'] && isset($_SERVER['REMOTE_ADDR'])) {
// 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'] = $m[2];
}
if($config['memcached']['enabled'])
memcached_open();
}
function basic_error_function_because_the_other_isnt_loaded_yet($message) {
if(function_exists('sql_close')) sql_close();
// 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']);
} else {
header('Content-Type: text/plain');
echo 'Caught fatal error: ' . $error['message'] . ' in ' . $error['file'] . ' on line ' . $error['line'];
}
}
}
}
register_shutdown_function('fatal_error_handler');
// Memcached
function memcached_open() {
global $memcached, $config;
if($memcached) return;
$memcached = new Memcached();
$memcached->addServers($config['memcached']['servers']);
}
function loadThemeConfig($_theme) {
global $config;
if(!file_exists($config['dir']['homepage'] . '/' . $_theme . '/info.php'))
return false;
// Load theme information into $theme
include $config['dir']['homepage'] . '/' . $_theme . '/info.php';
return $theme;
}
function rebuildTheme($action) {
global $config, $_theme;
$query = query("SELECT `value` AS `theme` FROM `theme_settings` WHERE `name` = 'theme'") or error(db_error());
if($theme = $query->fetch()) {
// A theme is installed
$_theme = $theme['theme'];
$theme = loadThemeConfig($_theme);
if(file_exists($config['dir']['homepage'] . '/' . $_theme . '/theme.php')) {
include $config['dir']['homepage'] . '/' . $_theme . '/theme.php';
$theme['build_function']($action, themeSettings());
}
}
}
function themeSettings() {
$query = query("SELECT * FROM `theme_settings`") or error(db_error());
$settings = Array();
while($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($board['dir'], 0777);
if(!file_exists($board['dir'] . $config['dir']['img'])) @mkdir($board['dir'] . $config['dir']['img'], 0777) or error("Couldn't create " . $config['dir']['img'] . ". Check permissions.", true);
if(!file_exists($board['dir'] . $config['dir']['thumb'])) @mkdir($board['dir'] . $config['dir']['thumb'], 0777) or error("Couldn't create " . $config['dir']['thumb'] . ". Check permissions.", true);
if(!file_exists($board['dir'] . $config['dir']['res'])) @mkdir($board['dir'] . $config['dir']['res'], 0777) or error("Couldn't create " . $config['dir']['res'] . ". Check permissions.", true);
}
function openBoard($uri) {
$query = prepare("SELECT * FROM `boards` WHERE `uri` = :uri LIMIT 1");
$query->bindValue(':uri', $uri);
$query->execute() or error(db_error($query));
if($board = $query->fetch()) {
setupBoard($board);
return true;
} else return false;
}
function file_write($path, $data) {
global $config;
if(preg_match('/^scp:\/\/(.+)$/', $path, $m)) {
// Experimental: secure copy...
$file = tempnam($config['tmp'], 'tinyboard-scp');
// Write to temp file
file_write($file, $data);
// Call `scp` (yes, this is horrible)
$command = 'scp ' . escapeshellarg($file) . ' ' . escapeshellarg($m[1]);
system($command);
// Delete temporary file
unlink($file);
exit;
}
if(!$fp = fopen($path, 'c'))
error('Unable to open file for writing: ' . $path);
// File locking
if(!flock($fp, LOCK_EX)) {
error('Unable to lock file: ' . $path);
}
// Truncate file
ftruncate($fp, 0);
// Write data
fwrite($fp, $data);
flock($fp, LOCK_UN);
fclose($fp);
}
function listBoards() {
$query = query("SELECT * FROM `boards` ORDER BY `uri`") or error(db_error());
$boards = $query->fetchAll();
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` = :body AND `time` >= :floodsameiptime) OR (`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));
return (bool)$query->fetch();
}
function until($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' . ($num != 1 ? 's' : '');
}
}
function formatDate($timestamp) {
return date('jS F, Y', $timestamp);
}
function displayBan($ban) {
global $config;
$body = '<div class="ban">
<h2>You are banned! ;_;</h2>
<p>You have been banned ' .
($ban['reason'] ? 'for the following reason:' : 'for an unspecified reason.') .
'</p>' .
($ban['reason'] ?
'<p class="reason">' .
$ban['reason'] .
'</p>'
: '') .
'<p>Your ban was filed on <strong>' .
formatDate($ban['set']) .
'</strong>, and <span id="expires">' .
($ban['expires'] ?
'expires <span id="countdown">' . until($ban['expires']) . '</span> from now, which is on <strong>' .
formatDate($ban['expires']) .
'</strong>
<script>
// return date("jS F, Y", $timestamp);
var secondsLeft = ' . ($ban['expires'] - time()) . '
var end = new Date().getTime() + secondsLeft*1000;
function updateExpiresTime() {
countdown.firstChild.nodeValue = until(end);
}
function until(end) {
var now = new Date().getTime();
var diff = Math.round((end - now) / 1000); // in seconds
if (diff < 0) {
document.getElementById("expires").innerHTML = "has since expired. Refresh the page to continue.";
//location.reload(true);
clearInterval(int);
return "";
} else if (diff < 60) {
return diff + " second" + (diff == 1 ? "" : "s");
} else if (diff < 60*60) {
return (num = Math.round(diff/(60))) + " minute" + (num == 1 ? "" : "s");
} else if (diff < 60*60*24) {
return (num = Math.round(diff/(60*60))) + " hour" + (num == 1 ? "" : "s");
} else if (diff < 60*60*24*7) {
return (num = Math.round(diff/(60*60*24))) + " day" + (num == 1 ? "" : "s");
} else if (diff < 60*60*24*365) {
return (num = Math.round(diff/(60*60*24*7))) + " week" + (num == 1 ? "" : "s");
} else {
return (num = Math.round(diff/(60*60*24*365))) + " year" + (num == 1 ? "" : "s");
}
}
var countdown = document.getElementById("countdown");
updateExpiresTime();
var int = setInterval(updateExpiresTime, 1000);
</script>'
: '<em>will not expire</em>.' ) .
'</span></p>
<p>Your IP address is <strong>' . $_SERVER['REMOTE_ADDR'] . '</strong>.</p>
</div>';
// Show banned page and exit
die(Element('page.html', Array(
'config' => $config,
'title' => 'Banned',
'subtitle' => 'You are banned!',
'body' => $body
)
));
}
function checkBan() {
global $config, $memcached;
if(!isset($_SERVER['REMOTE_ADDR'])) {
// Server misconfiguration
return;
}
if($config['memcached']['enabled']) {
// Cached ban?
if($ban = $memcached->get("ban_${_SERVER['REMOTE_ADDR']}")) {
displayBan($ban);
}
}
$query = prepare("SELECT * FROM `bans` WHERE `ip` = :ip ORDER BY `expires` IS NULL DESC, `expires` DESC, `expires` DESC LIMIT 1");
$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
$query->execute() or error(db_error($query));
if($query->rowCount() < 1 && $config['ban_range']) {
$query = prepare("SELECT * FROM `bans` WHERE :ip REGEXP CONCAT('^', REPLACE(REPLACE(`ip`, '.', '\\.'), '*', '[0-9]*'), '$') ORDER BY `expires` IS NULL DESC, `expires` DESC LIMIT 1");
$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
$query->execute() or error(db_error($query));
}
if($ban = $query->fetch()) {
if($ban['expires'] && $ban['expires'] < time()) {
// Ban expired
$query = prepare("DELETE FROM `bans` WHERE `ip` = :ip AND `expires` = :expires LIMIT 1");
$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
$query->bindValue(':expires', $ban['expires'], PDO::PARAM_INT);
$query->execute() or error(db_error($query));
if($config['ban_range']) {
$query = prepare("DELETE FROM `bans` WHERE :ip REGEXP CONCAT('^', REPLACE(REPLACE(`ip`, '.', '\\.'), '*', '[0-9a-f]*'), '$') AND `expires` = :expires LIMIT 1");
$query->bindValue(':ip', $_SERVER['REMOTE_ADDR']);
$query->bindValue(':expires', $ban['expires'], PDO::PARAM_INT);
$query->execute() or error(db_error($query));
}
return;
}
if($config['memcached']['enabled'])
$memcached->set("ban_${_SERVER['REMOTE_ADDR']}", $ban, $ban['expires']);
displayBan($ban);
}
}
function threadLocked($id) {
global $board;
$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) $post['locked'];
}
function threadExists($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, :time, :time, :thumb, :thumbwidth, :thumbheight, :file, :width, :height, :filesize, :filename, :filehash, :password, :ip, :sticky, :locked, :embed)", $board['uri']));
// Basic stuff
$query->bindValue(':subject', $post['subject']);
$query->bindValue(':email', $post['email']);
$query->bindValue(':name', $post['name']);
$query->bindValue(':trip', $post['trip']);
$query->bindValue(':body', $post['body']);
$query->bindValue(':time', time(), PDO::PARAM_INT);
$query->bindValue(':password', $post['password']);
$query->bindValue(':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'] && $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']);
$query->bindValue(':width', $post['width'], PDO::PARAM_INT);
$query->bindValue(':height', $post['height'], PDO::PARAM_INT);
$query->bindValue(':filesize', $post['filesize'], PDO::PARAM_INT);
$query->bindValue(':filename', $post['filename']);
$query->bindValue(':filehash', $post['file']);
} 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;
$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 AND `thread` IS NOT NULL 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();
$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 OR `thread` = :id", $board['uri']));
if($post['file'] == 'deleted' && $remove_entirely_if_already) {
// Already deleted; remove file fully
$query->bindValue(':file', null, PDO::PARAM_NULL);
} else {
// Delete thumbnail
@unlink($board['dir'] . $config['dir']['thumb'] . $post['thumb']);
// Delete file
@unlink($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));
buildThread($post['thread']);
}
// Delete a post (reply or thread)
function deletePost($id, $error_if_doesnt_exist=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($config['error']['invalidpost']);
else return false;
}
// Delete posts and maybe replies
while($post = $query->fetch()) {
if(!$post['thread']) {
// Delete thread HTML page
@unlink($board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $post['id']));
} elseif($query->rowCount() == 1) {
// Rebuild thread
$rebuild = $post['thread'];
}
if($post['thumb']) {
// Delete thumbnail
@unlink($board['dir'] . $config['dir']['thumb'] . $post['thumb']);
}
if($post['file']) {
// Delete file
@unlink($board['dir'] . $config['dir']['img'] . $post['file']);
}
}
$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));
if(isset($rebuild)) {
buildThread($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 = $query->fetch()) {
deletePost($post['id']);
}
}
function index($page, $mod=false) {
global $board, $config, $memcached;
$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 ?,?", $board['uri']));
$query->bindValue(1, $offset, PDO::PARAM_INT);
$query->bindValue(2, $config['threads_per_page'], PDO::PARAM_INT);
$query->execute() or error(db_error($query));
if($query->rowcount() < 1 && $page > 1) return false;
while($th = $query->fetch()) {
$thread = new Thread($th['id'], $th['subject'], $th['email'], $th['name'], $th['trip'], $th['capcode'], $th['body'], $th['time'], $th['thumb'], $th['thumbwidth'], $th['thumbheight'], $th['file'], $th['filewidth'], $th['fileheight'], $th['filesize'], $th['filename'], $th['ip'], $th['sticky'], $th['locked'], $th['embed'], $mod ? '?/' : $config['root'], $mod);
if($config['memcached']['enabled'] && !$mod) {
if($built = $memcached->get("theadindex_{$board['uri']}_{$th['id']}")) {
$body .= $built;
continue;
}
}
$posts = prepare(sprintf("SELECT * FROM `posts_%s` WHERE `thread` = ? ORDER BY `id` DESC LIMIT ?", $board['uri']));
$posts->bindValue(1, $th['id']);
$posts->bindValue(2, ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview']), PDO::PARAM_INT);
$posts->execute() or error(db_error($posts));
$num_images = 0;
while($po = $posts->fetch()) {
if($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'], $mod));
}
if($posts->rowCount() == ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview'])) {
$count = prepare(sprintf("SELECT COUNT(`id`) as `num` FROM `posts_%s` WHERE `thread` = :thread UNION ALL SELECT COUNT(`id`) FROM `posts_%s` WHERE `file` IS NOT NULL AND `thread` = :thread", $board['uri'], $board['uri']));
$count->bindValue(':thread', $th['id'], PDO::PARAM_INT);
$count->execute() or error(db_error($count));
$c = $count->fetch();
$thread->omitted = $c['num'] - ($th['sticky'] ? $config['threads_preview_sticky'] : $config['threads_preview']);
$c = $count->fetch();
$thread->omitted_images = $c['num'] - $num_images;
}
$thread->posts = array_reverse($thread->posts);
$built = '<div id="thread_' . $thread->id . '">' . $thread->build(true) . '</div>';
if($config['memcached']['enabled'] && !$mod) {
$memcached->set("theadindex_{$board['uri']}_{$th['id']}", $built, time() + $config['memcached']['timeout']);
}
$body .= $built;
}
return Array(
'board'=>$board,
'body'=>$body,
'post_url' => $config['post_url'],
'config' => $config,
'boardlist' => createBoardlist($mod)
);
}
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
if($num == 0) {
// There is no previous page.
$btn['prev'] = 'Previous';
} else {
$loc = ($mod ? '?/' . $board['uri'] . '/' : '') .
($num == 1 ?
$config['file_index']
:
sprintf($config['file_page'], $num)
);
$btn['prev'] = '<form action="' . ($mod ? '' : $root . $loc) . '" method="get">' .
($mod ?
'<input type="hidden" name="status" value="301" />' .
'<input type="hidden" name="r" value="' . htmlentities($loc) . '" />'
:'') .
'<input type="submit" value="Previous" /></form>';
}
if($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" />' .
'<input type="hidden" name="r" value="' . htmlentities($loc) . '" />'
:'') .
'<input type="submit" value="Next" /></form>';
}
}
}
return $btn;
}
function getPages($mod=false) {
global $board, $config;
// Count threads
$query = query(sprintf("SELECT COUNT(`id`) as `num` FROM `posts_%s` WHERE `thread` IS NULL", $board['uri'])) or error(db_error());
$count = current($query->fetch());
$count = floor(($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(
'num' => $x+1,
'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) {
$body = makerobot($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->fetch()) {
return true;
} else {
// Insert new hash
$query = prepare("INSERT INTO `robot` VALUES (:hash)");
$query->bindValue(':hash', $body);
$query->execute() or error(db_error($query));
return false;
}
}
function numPosts($id) {
global $board;
$query = prepare(sprintf("SELECT COUNT(*) as `count` FROM `posts_%s` WHERE `thread` = :thread", $board['uri']));
$query->bindValue(':thread', $id, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
$result = $query->fetch();
return $result['count'];
}
function muteTime() {
global $config;
// Find number of mutes in the past X hours
$query = prepare("SELECT COUNT(*) as `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));
$result = $query->fetch();
if($result['count'] == 0) return 0;
return pow($config['robot_mute_multiplier'], $result['count']);
}
function mute() {
// Insert mute
$query = prepare("INSERT INTO `mutes` VALUES (:ip, :time)");
$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, $memcached;
if($config['memcached']['enabled']) {
// Cached mute?
if(($mute = $memcached->get("mute_${_SERVER['REMOTE_ADDR']}")) && ($mutetime = $memcached->get("mutetime_${_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 = $query->fetch()) {
// What!? He's muted but he's not muted...
return;
}
if($mute['time'] + $mutetime > time()) {
if($config['memcached']['enabled']) {
$memcached->set("mute_${_SERVER['REMOTE_ADDR']}", $mute, $mute['time'] + $mutetime);
$memcached->set("mutetime_${_SERVER['REMOTE_ADDR']}", $mutetime, $mute['time'] + $mutetime);
}
// Not expired yet
error(sprintf($config['error']['youaremuted'], $mute['time'] + $mutetime - time()));
} else {
// Already expired
return;
}
}
}
function createHiddenInputs() {
global $config;
$inputs = Array();
shuffle($config['spam']['hidden_input_names']);
$hidden_input_names_x = 0;
$input_count = rand($config['spam']['hidden_inputs_min'], $config['spam']['hidden_inputs_max']);
for($x=0;$x<$input_count;$x++) {
if(rand(0, 2) == 0 || $hidden_input_names_x < 0) {
// Use an obscure name
$name = substr(base64_encode(sha1(rand())), 0, rand(2, 40));
} else {
// Use a pre-defined confusing name
$name = $config['spam']['hidden_input_names'][$hidden_input_names_x++];
if($hidden_input_names_x >= count($config['spam']['hidden_input_names']))
$hidden_input_names_x = -1;
}
if(rand(0, 2) == 0) {
// Value must be null
$inputs[$name] = '';
} elseif(rand(0, 4) == 0) {
// Numeric value
$inputs[$name] = rand(0, 100);
} else {
// Obscure value
$inputs[$name] = substr(base64_encode(sha1(rand())), 0, rand(2, 40));
}
}
$content = '';
foreach($inputs as $name => $value) {
$display_type = rand(0, 8);
switch($display_type) {
case 0:
$content .= '<input type="hidden" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '" />';
break;
case 1:
$content .= '<input style="display:none" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '" />';
break;
case 2:
$content .= '<input type="hidden" value="' . htmlspecialchars($value) . '" name="' . htmlspecialchars($name) . '" />';
break;
case 3:
$content .= '<input type="hidden" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '" />';
break;
case 4:
$content .= '<span style="display:none"><input type="text" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '" /></span>';
break;
case 5:
$content .= '<div style="display:none"><input type="text" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '" /></div>';
break;
case 6:
if(!empty($value))
$content .= '<textarea style="display:none" name="' . htmlspecialchars($name) . '">' . htmlspecialchars($value) . '</textarea>';
else
$content .= '<input type="hidden" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '" />';
break;
case 7:
if(!empty($value))
$content .= '<textarea name="' . htmlspecialchars($name) . '" style="display:none">' . htmlspecialchars($value) . '</textarea>';
else
$content .= '<input type="hidden" name="' . htmlspecialchars($name) . '" value="' . htmlspecialchars($value) . '" />';
break;
case 8:
$content .= '<div style="display:none"><textarea name="' . htmlspecialchars($name) . '" style="display:none">' . htmlspecialchars($value) . '</textarea></div>';
break;
}
}
// Create a hash to validate it after
// This is the tricky part.
// First, sort the keys in alphabetical order (A-Z)
ksort($inputs);
$hash = '';
// Iterate through each input
foreach($inputs as $name => $value) {
$hash .= $name . '=' . $value;
}
// Add a salt to the hash
$hash .= $config['cookies']['salt'];
// Use SHA1 for the hash
$hash = sha1($hash);
// Append it to the HTML
$content .= '<input type="hidden" name="hash" value="' . $hash . '" />';
return $content;
}
function checkSpam() {
global $config;
if(!isset($_POST['hash']))
return true;
$hash = $_POST['hash'];
// Reconsturct the $inputs array
$inputs = Array();
foreach($_POST as $name => $value) {
if(in_array($name, $config['spam']['valid_inputs']))
continue;
$inputs[$name] = $value;
}
// Sort the inputs in alphabetical order (A-Z)
ksort($inputs);
$_hash = '';
// Iterate through each input
foreach($inputs as $name => $value) {
$_hash .= $name . '=' . $value;
}
// Add a salt to the hash
$_hash .= $config['cookies']['salt'];
// Use SHA1 for the hash
$_hash = sha1($_hash);
return $hash != $_hash;
}
function buildIndex() {
global $board, $config;
$pages = getPages();
$page = 1;
while($page <= $config['max_pages'] && $content = index($page)) {
$filename = $board['dir'] . ($page==1 ? $config['file_index'] : sprintf($config['file_page'], $page));
if(file_exists($filename)) $md5 = md5_file($filename);
$content['pages'] = $pages;
$content['pages'][$page-1]['selected'] = true;
$content['btn'] = getPageButtons($content['pages']);
$content['hidden_inputs'] = createHiddenInputs();
file_write($filename, Element('index.html', $content));
if(isset($md5) && $md5 == md5_file($filename)) {
break;
}
$page++;
}
if($page < $config['max_pages']) {
for(;$page<=$config['max_pages'];$page++) {
$filename = $page==1 ? $config['file_index'] : sprintf($config['file_page'], $page);
@unlink($filename);
}
}
}
function buildJavascript() {
global $config;
$stylesheets = Array();
foreach($config['stylesheets'] as $name => $uri) {
$stylesheets[] = Array(
'name' => addslashes($name),
'uri' => addslashes((!empty($uri) ? $config['uri_stylesheets'] : '') . $uri));
}
file_write($config['file_script'], Element('main.js', Array(
'config' => $config,
'stylesheets' => $stylesheets
)));
}
function checkDNSBL() {
global $config;
if(isIPv6())
return; // No IPv6 support yet.
if(!isset($_SERVER['REMOTE_ADDR']))
return; // Fix your web server configuration
// Reverse IP
$ip = ReverseIPOctets($_SERVER['REMOTE_ADDR']);
foreach($config['dnsbl'] as &$blacklist) {
$lookup = $ip . '.' . $blacklist;
$host = gethostbyname($lookup);
if($host != $lookup) {
// On NXDOMAIN (meaning it's not in the blacklist), gethostbyname() returns the host unchanged.
if(preg_match('/^127\.0\.0\./', $host) && $host != '127.0.0.10')
error(sprintf($config['error']['dnsbl'], $blacklist));
}
}
}
function isIPv6() {
return strstr($_SERVER['REMOTE_ADDR'], ':') !== false;
}
function ReverseIPOctets($ip) {
$ipoc = explode('.', $ip);
return $ipoc[3] . '.' . $ipoc[2] . '.' . $ipoc[1] . '.' . $ipoc[0];
}
function wordfilters(&$body) {
global $config;
foreach($config['wordfilters'] as $filter) {
if(isset($filter[2]) && $filter[2]) {
$body = preg_replace($filter[0], $filter[1], $body);
} else {
$body = str_replace($filter[0], $filter[1], $body);
}
}
}
function quote($body, $quote=true) {
$body = str_replace('<br/>', "\n", $body);
$body = strip_tags($body);
$body = preg_replace("/(^|\n)/", '$1&gt;', $body);
return $body . "\n";
}
function markup(&$body) {
global $board, $config;
$body = utf8tohtml($body, true);
if($config['wiki_markup']) {
$body = preg_replace("/(^|\n)==(.+?)==\n?/m", "<span class=\"heading\">$2</span>", $body);
$body = preg_replace("/'''(.+?)'''/m", "<strong>$1</strong>", $body);
$body = preg_replace("/''(.+?)''/m", "<em>$1</em>", $body);
$body = preg_replace("/\*\*(.+?)\*\*/m", "<span class=\"spoiler\">$1</span>", $body);
}
if($config['markup_urls']) {
$body = preg_replace($config['url_regex'], "<a target=\"_blank\" rel=\"nofollow\" href=\"$0\">$0</a>", $body, -1, $num_links);
if($num_links > $config['max_links'])
error($config['error']['toomanylinks']);
}
if($config['auto_unicode']) {
$body = str_replace('...', '…', $body);
$body = str_replace('<--', '←', $body);
$body = str_replace('-->', '→', $body);
// En and em- dashes are rendered exactly the same in
// most monospace fonts (they look the same in code
// editors).
$body = str_replace('---', '—', $body); // em dash
$body = str_replace('--', '–', $body); // en dash
}
// Cites
if(isset($board) && preg_match_all('/(^|\s)&gt;&gt;(\d+?)(\s|$)/', $body, $cites)) {
if(count($cites[0]) > $config['max_cites']) {
error($config['error']['toomanycites']);
}
for($index=0;$index<count($cites[0]);$index++) {
$cite = $cites[2][$index];
$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()) {
$replacement = '<a onclick="highlightReply(\''.$cite.'\');" href="' .
$config['root'] . $board['dir'] . $config['dir']['res'] . ($post['thread']?$post['thread']:$post['id']) . '.html#' . $cite . '">' .
'&gt;&gt;' . $cite .
'</a>';
$body = str_replace($cites[0][$index], $cites[1][$index] . $replacement . $cites[3][$index], $body);
}
}
}
// Cross-board linking
if(preg_match_all('/(^|\s)&gt;&gt;&gt;\/(\w+?)\/(\d+)?(\s|$)/', $body, $cites)) {
if(count($cites[0]) > $config['max_cites']) {
error($config['error']['toomanycross']);
}
for($index=0;$index<count($cites[0]);$index++) {
$_board = $cites[2][$index];
$cite = @$cites[3][$index];
// 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()) {
$replacement = '<a onclick="highlightReply(\''.$cite.'\');" href="' .
$config['root'] . $board['dir'] . $config['dir']['res'] . ($post['thread']?$post['thread']:$post['id']) . '.html#' . $cite . '">' .
'&gt;&gt;&gt;/' . $_board . '/' . $cite .
'</a>';
$body = str_replace($cites[0][$index], $cites[1][$index] . $replacement . $cites[4][$index], $body);
}
} else {
$replacement = '<a href="' .
$config['root'] . $board['dir'] . $config['file_index'] . '">' .
'&gt;&gt;&gt;/' . $_board . '/' .
'</a>';
$body = str_replace($cites[0][$index], $cites[1][$index] . $replacement . $cites[4][$index], $body);
}
}
// Restore main board settings
openBoard($tmp_board);
}
}
$body = str_replace("\r", '', $body);
$body = preg_replace("/(^|\n)([\s]+)?(&gt;)([^\n]+)?($|\n)/m", '$1$2<span class="quote">$3$4</span>$5', $body);
if($config['strip_superfluous_returns'])
$body = preg_replace('/\s+$/', '', $body);
$body = preg_replace("/\n/", '<br/>', $body);
}
function html_entity_decode_utf8($string) {
static $trans_tbl;
// replace numeric entities
$string = preg_replace('~&#x([0-9a-f]+);~ei', 'code2utf(hexdec("\\1"))', $string);
$string = preg_replace('~&#([0-9]+);~e', 'code2utf(\\1)', $string);
// replace literal entities
if (!isset($trans_tbl)) {
$trans_tbl = array();
foreach (get_html_translation_table(HTML_ENTITIES) as $val=>$key)
$trans_tbl[$key] = utf8_encode($val);
}
return strtr($string, $trans_tbl);
}
// Returns the utf string corresponding to the unicode value (from php.net, courtesy - [email protected])
function code2utf($num) {
if ($num < 128)
return chr($num);
if ($num < 2048)
return chr(($num >> 6) + 192) . chr(($num & 63) + 128);
if ($num < 65536)
return chr(($num >> 12) + 224) . chr((($num >> 6) & 63) + 128) . chr(($num & 63) + 128);
if ($num < 2097152)
return chr(($num >> 18) + 240) . chr((($num >> 12) & 63) + 128) . chr((($num >> 6) & 63) + 128) . chr(($num & 63) + 128);
return '';
}
function utf8tohtml($utf8, $encodeTags=true) {
$result = '';
for ($i = 0; $i < strlen($utf8); $i++) {
$char = $utf8[$i];
$ascii = ord($char);
if ($ascii < 128) {
// one-byte character
$result .= ($encodeTags) ? htmlentities($char) : $char;
} else if ($ascii < 192) {
// non-utf8 character or not a start byte
} else if ($ascii < 224) {
// two-byte character
$result .= htmlentities(substr($utf8, $i, 2), ENT_QUOTES, 'UTF-8');
$i++;
} else if ($ascii < 240) {
// three-byte character
$ascii1 = ord($utf8[$i+1]);
$ascii2 = @ord($utf8[$i+2]);
$unicode = (15 & $ascii) * 4096 +
(63 & $ascii1) * 64 +
(63 & $ascii2);
$result .= "&#$unicode;";
$i += 2;
} else if ($ascii < 248) {
// four-byte character
$ascii1 = ord($utf8[$i+1]);
$ascii2 = ord($utf8[$i+2]);
$ascii3 = ord($utf8[$i+3]);
$unicode = (15 & $ascii) * 262144 +
(63 & $ascii1) * 4096 +
(63 & $ascii2) * 64 +
(63 & $ascii3);
$result .= "&#$unicode;";
$i += 3;
}
}
return $result;
}
function buildThread($id, $return=false, $mod=false) {
global $board, $config, $memcached;
$id = round($id);
if($config['memcached']['enabled'] && !$mod) {
// Clear cache for index pages
$memcached->delete("theadindex_{$board['uri']}_{$id}");
}
$query = prepare(sprintf("SELECT * FROM `posts_%s` WHERE (`thread` IS NULL AND `id` = :id) OR `thread` = :id ORDER BY `thread`,`time`", $board['uri']));
$query->bindValue(':id', $id, PDO::PARAM_INT);
$query->execute() or error(db_error($query));
while($post = $query->fetch()) {
if(!isset($thread)) {
$thread = new Thread($post['id'], $post['subject'], $post['email'], $post['name'], $post['trip'], $post['capcode'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename'], $post['ip'], $post['sticky'], $post['locked'], $post['embed'], $mod ? '?/' : $config['root'], $mod);
} else {
$thread->add(new Post($post['id'], $thread->id, $post['subject'], $post['email'], $post['name'], $post['trip'], $post['capcode'], $post['body'], $post['time'], $post['thumb'], $post['thumbwidth'], $post['thumbheight'], $post['file'], $post['filewidth'], $post['fileheight'], $post['filesize'], $post['filename'], $post['ip'], $post['embed'], $mod ? '?/' : $config['root'], $mod));
}
}
// Check if any posts were found
if(!isset($thread)) error($config['error']['nonexistant']);
$body = Element('thread.html', Array(
'board'=>$board,
'body'=>$thread->build(),
'config' => $config,
'id' => $id,
'mod' => $mod,
'boardlist' => createBoardlist($mod),
'hidden_inputs' => $content['hidden_inputs'] = createHiddenInputs(),
'return' => ($mod ? '?' . $board['url'] . $config['file_index'] : $config['root'] . $board['uri'] . '/' . $config['file_index'])
));
if($return)
return $body;
else
file_write($board['dir'] . $config['dir']['res'] . sprintf($config['file_page'], $id), $body);
}
function rrmdir($dir) {
if (is_dir($dir)) {
$objects = scandir($dir);
foreach ($objects as $object) {
if ($object != "." && $object != "..") {
if (filetype($dir."/".$object) == "dir")
rrmdir($dir."/".$object);
else
unlink($dir."/".$object);
}
}
reset($objects);
rmdir($dir);
}
}
function poster_id($ip, $thread) {
global $config;
// Confusing, hard to brute-force, but simple algorithm
return substr(sha1(sha1($ip . $config['secure_trip_salt'] . $thread) . $config['secure_trip_salt']), 0, $config['poster_id_length']);
}
function generate_tripcode($name, $length = 10){
global $config;
$name = stripslashes ( $name );
$t = explode('#', $name);
$nameo = $t[0];
if ( isset ( $t[1] ) || isset ( $t[2] ) ) {
$trip = ( ( strlen ( $t[1] ) > 0 ) ? $t[1] : $t[2] );
if ( ( function_exists ( 'mb_convert_encoding' ) ) ) {
# mb_substitute_character('none');
$recoded_cap = mb_convert_encoding ( $trip, 'Shift_JIS', 'UTF-8' );
}
$trip = ( ( ! empty ( $recoded_cap ) ) ? $recoded_cap : $trip );
$salt = substr ( $trip.'H.', 1, 2 );
$salt = preg_replace ( '/[^\.-z]/', '.', $salt );
$salt = strtr ( $salt, ':;<=>?@[\]^_`', 'ABCDEFGabcdef' );
if ( isset ( $t[2] ) ) {
// secure
$trip = '!!' . substr ( crypt ( $trip, $config['secure_trip_salt'] ), ( -1 * $length ) );
} else {
// insecure
$trip = '!' . substr ( crypt ( $trip, $salt ), ( -1 * $length ) );
}
}
if ( isset ( $trip ) ) {
return array ( $nameo, $trip );
} else {
return array ( $nameo );
}
}
// Highest common factor
function hcf($a, $b){
$gcd = 1;
if ($a>$b) {
$a = $a+$b;
$b = $a-$b;
$a = $a-$b;
}
if ($b==(round($b/$a))*$a)
$gcd=$a;
else {
for($i=round($a/2);$i;$i--) {
if ($a == round($a/$i)*$i && $b == round($b/$i)*$i) {
$gcd = $i;
$i = false;
}
}
}
return $gcd;
}
function fraction($numerator, $denominator, $sep) {
$gcf = hcf($numerator, $denominator);
$numerator = $numerator / $gcf;
$denominator = $denominator / $gcf;
return "{$numerator}{$sep}{$denominator}";
}
/*********************************************/
/* Fonction: imagecreatefrombmp */
/* Author: DHKold */
/* Contact: [email protected] */
/* Date: The 15th of June 2005 */
/* Version: 2.0B */
/*********************************************/
function imagecreatefrombmp($filename) {
if (! $f1 = fopen($filename,"rb")) return FALSE;
$FILE = unpack("vfile_type/Vfile_size/Vreserved/Vbitmap_offset", fread($f1,14));
if ($FILE['file_type'] != 19778) return FALSE;
$BMP = unpack('Vheader_size/Vwidth/Vheight/vplanes/vbits_per_pixel'.
'/Vcompression/Vsize_bitmap/Vhoriz_resolution'.
'/Vvert_resolution/Vcolors_used/Vcolors_important', fread($f1,40));
$BMP['colors'] = pow(2,$BMP['bits_per_pixel']);
if ($BMP['size_bitmap'] == 0) $BMP['size_bitmap'] = $FILE['file_size'] - $FILE['bitmap_offset'];
$BMP['bytes_per_pixel'] = $BMP['bits_per_pixel']/8;
$BMP['bytes_per_pixel2'] = ceil($BMP['bytes_per_pixel']);
$BMP['decal'] = ($BMP['width']*$BMP['bytes_per_pixel']/4);
$BMP['decal'] -= floor($BMP['width']*$BMP['bytes_per_pixel']/4);
$BMP['decal'] = 4-(4*$BMP['decal']);
if ($BMP['decal'] == 4) $BMP['decal'] = 0;
$PALETTE = array();
if ($BMP['colors'] < 16777216)
{
$PALETTE = unpack('V'.$BMP['colors'], fread($f1,$BMP['colors']*4));
}
$IMG = fread($f1,$BMP['size_bitmap']);
$VIDE = chr(0);
$res = imagecreatetruecolor($BMP['width'],$BMP['height']);
$P = 0;
$Y = $BMP['height']-1;
while ($Y >= 0)
{
$X=0;
while ($X < $BMP['width'])
{
if ($BMP['bits_per_pixel'] == 24)
$COLOR = unpack("V",substr($IMG,$P,3).$VIDE);
elseif ($BMP['bits_per_pixel'] == 16)
{
$COLOR = unpack("n",substr($IMG,$P,2));
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 8)
{
$COLOR = unpack("n",$VIDE.substr($IMG,$P,1));
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 4)
{
$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
if (($P*2)%2 == 0) $COLOR[1] = ($COLOR[1] >> 4) ; else $COLOR[1] = ($COLOR[1] & 0x0F);
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
elseif ($BMP['bits_per_pixel'] == 1)
{
$COLOR = unpack("n",$VIDE.substr($IMG,floor($P),1));
if (($P*8)%8 == 0) $COLOR[1] = $COLOR[1] >>7;
elseif (($P*8)%8 == 1) $COLOR[1] = ($COLOR[1] & 0x40)>>6;
elseif (($P*8)%8 == 2) $COLOR[1] = ($COLOR[1] & 0x20)>>5;
elseif (($P*8)%8 == 3) $COLOR[1] = ($COLOR[1] & 0x10)>>4;
elseif (($P*8)%8 == 4) $COLOR[1] = ($COLOR[1] & 0x8)>>3;
elseif (($P*8)%8 == 5) $COLOR[1] = ($COLOR[1] & 0x4)>>2;
elseif (($P*8)%8 == 6) $COLOR[1] = ($COLOR[1] & 0x2)>>1;
elseif (($P*8)%8 == 7) $COLOR[1] = ($COLOR[1] & 0x1);
$COLOR[1] = $PALETTE[$COLOR[1]+1];
}
else
return FALSE;
imagesetpixel($res,$X,$Y,$COLOR[1]);
$X++;
$P += $BMP['bytes_per_pixel'];
}
$Y--;
$P+=$BMP['decal'];
}
fclose($f1);
return $res;
}
function getPostByHash($hash) {
global $board;
$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()) {
return $post;
}
return false;
}
function undoImage($post) {
if($post['has_file'])
@unlink($post['file']);
@unlink($post['thumb']);
}
function createimage($type, $source_pic) {
global $config;
$image = false;
switch($type) {
case 'jpg':
case 'jpeg':
if(!$image = @imagecreatefromjpeg($source_pic)) {
unlink($source_pic);
error($config['error']['invalidimg']);
}
break;
case 'png':
if(!$image = @imagecreatefrompng($source_pic)) {
unlink($source_pic);
error($config['error']['invalidimg']);
}
break;
case 'gif':
if(!$image = @imagecreatefromgif($source_pic)) {
unlink($source_pic);
error($config['error']['invalidimg']);
}
break;
case 'bmp':
if(!$image = @imagecreatefrombmp($source_pic)) {
unlink($source_pic);
error($config['error']['invalidimg']);
}
break;
default:
error($config['error']['unknownext']);
}
return $image;
}
function resize($src, $width, $height, $destination_pic, $max_width, $max_height, $ext) {
global $config;
$return = Array();
$x_ratio = $max_width / $width;
$y_ratio = $max_height / $height;
if(($width <= $max_width) && ($height <= $max_height)) {
$tn_width = $width;
$tn_height = $height;
} elseif (($x_ratio * $height) < $max_height) {
$tn_height = ceil($x_ratio * $height);
$tn_width = $max_width;
} else {
$tn_width = ceil($y_ratio * $width);
$tn_height = $max_height;
}
$return['width'] = $tn_width;
$return['height'] = $tn_height;
$tmp = imagecreatetruecolor($tn_width, $tn_height);
if($ext == 'png' || $ext == 'gif') {
imagecolortransparent($tmp, imagecolorallocatealpha($tmp, 0, 0, 0, 0));
imagesavealpha($tmp, true);
}
if($ext == 'png')
imagealphablending($tmp, false);
imagecopyresampled($tmp, $src, 0, 0, 0, 0, $tn_width, $tn_height, $width, $height);
switch($ext) {
case 'jpg':
case 'jpeg':
imagejpeg($tmp, $destination_pic);
break;
case 'png':
imagepng($tmp, $destination_pic, $config['thumb_quality']);
break;
case 'gif':
imagegif($tmp, $destination_pic);
break;
case 'bmp':
imagebmp($tmp, $destination_pic);
break;
default:
error($config['error']['unknownext']);
}
imagedestroy($src);
imagedestroy($tmp);
return $return;
}
function imagebmp(&$img, $filename='') {
$widthOrig = imagesx($img);
$widthFloor = ((floor($widthOrig/16))*16);
$widthCeil = ((ceil($widthOrig/16))*16);
$height = imagesy($img);
$size = ($widthCeil*$height*3)+54;
// Bitmap File Header
$result = 'BM'; // header (2b)
$result .= int_to_dword($size); // size of file (4b)
$result .= int_to_dword(0); // reserved (4b)
$result .= int_to_dword(54); // byte location in the file which is first byte of IMAGE (4b)
// Bitmap Info Header
$result .= int_to_dword(40); // Size of BITMAPINFOHEADER (4b)
$result .= int_to_dword($widthCeil); // width of bitmap (4b)
$result .= int_to_dword($height); // height of bitmap (4b)
$result .= int_to_word(1); // biPlanes = 1 (2b)
$result .= int_to_word(24); // biBitCount = {1 (mono) or 4 (16 clr ) or 8 (256 clr) or 24 (16 Mil)} (2b
$result .= int_to_dword(0); // RLE COMPRESSION (4b)
$result .= int_to_dword(0); // width x height (4b)
$result .= int_to_dword(0); // biXPelsPerMeter (4b)
$result .= int_to_dword(0); // biYPelsPerMeter (4b)
$result .= int_to_dword(0); // Number of palettes used (4b)
$result .= int_to_dword(0); // Number of important colour (4b)
// is faster than chr()
$arrChr = array();
for($i=0; $i<256; $i++){
$arrChr[$i] = chr($i);
}
// creates image data
$bgfillcolor = array('red'=>0, 'green'=>0, 'blue'=>0);
// bottom to top - left to right - attention blue green red !!!
$y=$height-1;
for ($y2=0; $y2<$height; $y2++) {
for ($x=0; $x<$widthFloor; ) {
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
$rgb = imagecolorsforindex($img, imagecolorat($img, $x++, $y));
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
}
for ($x=$widthFloor; $x<$widthCeil; $x++) {
$rgb = ($x<$widthOrig) ? imagecolorsforindex($img, imagecolorat($img, $x, $y)) : $bgfillcolor;
$result .= $arrChr[$rgb['blue']].$arrChr[$rgb['green']].$arrChr[$rgb['red']];
}
$y--;
}
// see imagegif
if($filename == '') {
echo $result;
} else {
$file = fopen($filename, 'wb');
fwrite($file, $result);
fclose($file);
}
}
// imagebmp helpers
function int_to_dword($n) {
return chr($n & 255).chr(($n >> 8) & 255).chr(($n >> 16) & 255).chr(($n >> 24) & 255);
}
function int_to_word($n) {
return chr($n & 255).chr(($n >> 8) & 255);
}
?>