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//
// Set a cookie, FluxBB style!
// Wrapper for forum_setcookie
//
function pun_setcookie($user_id, $password_hash, $expire)
{
global $cookie_name, $cookie_seed;
forum_setcookie($cookie_name, $user_id.'|'.forum_hmac($password_hash, $cookie_seed.'_password_hash').'|'.$expire.'|'.forum_hmac($user_id.'|'.$expire, $cookie_seed.'_cookie_hash'), $expire);
}
//
// Set a cookie, FluxBB style!
//
function forum_setcookie($name, $value, $expire)
{
global $cookie_path, $cookie_domain, $cookie_secure;
// Enable sending of a P3P header
header('P3P: CP="CUR ADM"');
if (version_compare(PHP_VERSION, '5.2.0', '>='))
setcookie($name, $value, $expire, $cookie_path, $cookie_domain, $cookie_secure, true);
else
setcookie($name, $value, $expire, $cookie_path.'; HttpOnly', $cookie_domain, $cookie_secure);
}
//
// Check whether the connecting user is banned (and delete any expired bans while we're at it)
//
function check_bans()
{
global $db, $pun_config, $lang_common, $pun_user, $pun_bans;
// Admins and moderators aren't affected
if ($pun_user['is_admmod'] || !$pun_bans)
return;
// Add a dot or a colon (depending on IPv4/IPv6) at the end of the IP address to prevent banned address
// 192.168.0.5 from matching e.g. 192.168.0.50
$user_ip = get_remote_address();
$user_ip .= (strpos($user_ip, '.') !== false) ? '.' : ':';
$bans_altered = false;
$is_banned = false;
foreach ($pun_bans as $cur_ban)
{
// Has this ban expired?
if ($cur_ban['expire'] != '' && $cur_ban['expire'] <= time())
{
$db->query('DELETE FROM '.$db->prefix.'bans WHERE id='.$cur_ban['id']) or error('Unable to delete expired ban', __FILE__, __LINE__, $db->error());
$bans_altered = true;
continue;
}
if ($cur_ban['username'] != '' && utf8_strtolower($pun_user['username']) == utf8_strtolower($cur_ban['username']))
$is_banned = true;
if ($cur_ban['ip'] != '')
{
$cur_ban_ips = explode(' ', $cur_ban['ip']);
$num_ips = count($cur_ban_ips);
for ($i = 0; $i < $num_ips; ++$i)
{
// Add the proper ending to the ban
if (strpos($user_ip, '.') !== false)
$cur_ban_ips[$i] = $cur_ban_ips[$i].'.';
else
$cur_ban_ips[$i] = $cur_ban_ips[$i].':';
if (substr($user_ip, 0, strlen($cur_ban_ips[$i])) == $cur_ban_ips[$i])
{
$is_banned = true;
break;
}
}
}
if ($is_banned)
{
$db->query('DELETE FROM '.$db->prefix.'online WHERE ident=\''.$db->escape($pun_user['username']).'\'') or error('Unable to delete from online list', __FILE__, __LINE__, $db->error());
message($lang_common['Ban message'].' '.(($cur_ban['expire'] != '') ? $lang_common['Ban message 2'].' '.strtolower(format_time($cur_ban['expire'], true)).'. ' : '').(($cur_ban['message'] != '') ? $lang_common['Ban message 3'].'<br /><br /><strong>'.pun_htmlspecialchars($cur_ban['message']).'</strong><br /><br />' : '<br /><br />').$lang_common['Ban message 4'].' <a href="mailto:'.$pun_config['o_admin_email'].'">'.$pun_config['o_admin_email'].'</a>.', true);
}
}
// If we removed any expired bans during our run-through, we need to regenerate the bans cache
if ($bans_altered)
{
if (!defined('FORUM_CACHE_FUNCTIONS_LOADED'))
require PUN_ROOT.'include/cache.php';
generate_bans_cache();
}
}
//
// Check username
//
function check_username($username, $exclude_id = null)
{
global $db, $pun_config, $errors, $lang_prof_reg, $lang_register, $lang_common, $pun_bans;
// Convert multiple whitespace characters into one (to prevent people from registering with indistinguishable usernames)
$username = preg_replace('%\s+%s', ' ', $username);
// Validate username
if (pun_strlen($username) < 2)
$errors[] = $lang_prof_reg['Username too short'];
else if (pun_strlen($username) > 25) // This usually doesn't happen since the form element only accepts 25 characters
$errors[] = $lang_prof_reg['Username too long'];
else if (!strcasecmp($username, 'Guest') || !strcasecmp($username, $lang_common['Guest']))
$errors[] = $lang_prof_reg['Username guest'];
else if (preg_match('%[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}%', $username) || preg_match('%((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))%', $username))
$errors[] = $lang_prof_reg['Username IP'];
else if ((strpos($username, '[') !== false || strpos($username, ']') !== false) && strpos($username, '\'') !== false && strpos($username, '"') !== false)
$errors[] = $lang_prof_reg['Username reserved chars'];
else if (preg_match('%(?:\[/?(?:b|u|s|ins|del|em|i|h|colou?r|quote|code|img|url|email|list|\*|topic|post|forum|user)\]|\[(?:img|url|quote|list)=)%i', $username))
$errors[] = $lang_prof_reg['Username BBCode'];
// Check username for any censored words
if ($pun_config['o_censoring'] == '1' && censor_words($username) != $username)
$errors[] = $lang_register['Username censor'];
// Check that the username (or a too similar username) is not already registered
$query = ($exclude_id) ? ' AND id!='.$exclude_id : '';
$result = $db->query('SELECT username FROM '.$db->prefix.'users WHERE (UPPER(username)=UPPER(\''.$db->escape($username).'\') OR UPPER(username)=UPPER(\''.$db->escape(ucp_preg_replace('%[^\p{L}\p{N}]%u', '', $username)).'\')) AND id>1'.$query) or error('Unable to fetch user info', __FILE__, __LINE__, $db->error());
if ($db->num_rows($result))
{
$busy = $db->result($result);
$errors[] = $lang_register['Username dupe 1'].' '.pun_htmlspecialchars($busy).'. '.$lang_register['Username dupe 2'];
}
// Check username for any banned usernames
foreach ($pun_bans as $cur_ban)
{
if ($cur_ban['username'] != '' && utf8_strtolower($username) == utf8_strtolower($cur_ban['username']))
{
$errors[] = $lang_prof_reg['Banned username'];
break;
}
}
}
//
// Update "Users online"
//
function update_users_online()
{
global $db, $pun_config;
$now = time();
// Fetch all online list entries that are older than "o_timeout_online"
$result = $db->query('SELECT user_id, ident, logged, idle FROM '.$db->prefix.'online WHERE logged<'.($now-$pun_config['o_timeout_online'])) or error('Unable to fetch old entries from online list', __FILE__, __LINE__, $db->error());
while ($cur_user = $db->fetch_assoc($result))
{
// If the entry is a guest, delete it
if ($cur_user['user_id'] == '1')
$db->query('DELETE FROM '.$db->prefix.'online WHERE ident=\''.$db->escape($cur_user['ident']).'\'') or error('Unable to delete from online list', __FILE__, __LINE__, $db->error());
else
{
// If the entry is older than "o_timeout_visit", update last_visit for the user in question, then delete him/her from the online list
if ($cur_user['logged'] < ($now-$pun_config['o_timeout_visit']))
{
$db->query('UPDATE '.$db->prefix.'users SET last_visit='.$cur_user['logged'].' WHERE id='.$cur_user['user_id']) or error('Unable to update user visit data', __FILE__, __LINE__, $db->error());
$db->query('DELETE FROM '.$db->prefix.'online WHERE user_id='.$cur_user['user_id']) or error('Unable to delete from online list', __FILE__, __LINE__, $db->error());
}
else if ($cur_user['idle'] == '0')
$db->query('UPDATE '.$db->prefix.'online SET idle=1 WHERE user_id='.$cur_user['user_id']) or error('Unable to insert into online list', __FILE__, __LINE__, $db->error());
}
}
}
//
// Display the profile navigation menu
//
function generate_profile_menu($page = '')
{
global $lang_profile, $pun_config, $pun_user, $id;
?>
<div id="profile" class="block2col">
<div class="blockmenu">
<h2><span><?php echo $lang_profile['Profile menu'] ?></span></h2>
<div class="box">
<div class="inbox">
<ul>
<li<?php if ($page == 'essentials') echo ' class="isactive"'; ?>><a href="profile.php?section=essentials&id=<?php echo $id ?>"><?php echo $lang_profile['Section essentials'] ?></a></li>
<li<?php if ($page == 'personal') echo ' class="isactive"'; ?>><a href="profile.php?section=personal&id=<?php echo $id ?>"><?php echo $lang_profile['Section personal'] ?></a></li>
<li<?php if ($page == 'messaging') echo ' class="isactive"'; ?>><a href="profile.php?section=messaging&id=<?php echo $id ?>"><?php echo $lang_profile['Section messaging'] ?></a></li>
<?php if ($pun_config['o_avatars'] == '1' || $pun_config['o_signatures'] == '1'): ?> <li<?php if ($page == 'personality') echo ' class="isactive"'; ?>><a href="profile.php?section=personality&id=<?php echo $id ?>"><?php echo $lang_profile['Section personality'] ?></a></li>
<?php endif; ?> <li<?php if ($page == 'display') echo ' class="isactive"'; ?>><a href="profile.php?section=display&id=<?php echo $id ?>"><?php echo $lang_profile['Section display'] ?></a></li>
<li<?php if ($page == 'privacy') echo ' class="isactive"'; ?>><a href="profile.php?section=privacy&id=<?php echo $id ?>"><?php echo $lang_profile['Section privacy'] ?></a></li>
<?php if ($pun_user['g_id'] == PUN_ADMIN || ($pun_user['g_moderator'] == '1' && $pun_user['g_mod_ban_users'] == '1')): ?> <li<?php if ($page == 'admin') echo ' class="isactive"'; ?>><a href="profile.php?section=admin&id=<?php echo $id ?>"><?php echo $lang_profile['Section admin'] ?></a></li>
<?php endif; ?> </ul>
</div>
</div>
</div>
<?php
}
//
// Outputs markup to display a user's avatar
//
function generate_avatar_markup($user_id)
{
global $pun_config;
$filetypes = array('jpg', 'gif', 'png');
$avatar_markup = '';
foreach ($filetypes as $cur_type)
{
$path = $pun_config['o_avatars_dir'].'/'.$user_id.'.'.$cur_type;
if (file_exists(PUN_ROOT.$path) && $img_size = getimagesize(PUN_ROOT.$path))
{
$avatar_markup = '<img src="'.pun_htmlspecialchars(get_base_url(true).'/'.$path.'?m='.filemtime(PUN_ROOT.$path)).'" '.$img_size[3].' alt="" />';
break;
}
}
return $avatar_markup;
}
//
// Generate browser's title
//
function generate_page_title($page_title, $p = null)
{
global $pun_config, $lang_common;
$page_title = array_reverse($page_title);
if (!is_null($p))
$page_title[0] .= ' ('.sprintf($lang_common['Page'], forum_number_format($p)).')';
$crumbs = implode($lang_common['Title separator'], $page_title);
return $crumbs;
}
//
// Save array of tracked topics in cookie
//
function set_tracked_topics($tracked_topics)
{
global $cookie_name, $cookie_path, $cookie_domain, $cookie_secure, $pun_config;
$cookie_data = '';
if (!empty($tracked_topics))
{
// Sort the arrays (latest read first)
arsort($tracked_topics['topics'], SORT_NUMERIC);
arsort($tracked_topics['forums'], SORT_NUMERIC);
// Homebrew serialization (to avoid having to run unserialize() on cookie data)
foreach ($tracked_topics['topics'] as $id => $timestamp)
$cookie_data .= 't'.$id.'='.$timestamp.';';
foreach ($tracked_topics['forums'] as $id => $timestamp)
$cookie_data .= 'f'.$id.'='.$timestamp.';';
// Enforce a byte size limit (4096 minus some space for the cookie name - defaults to 4048)
if (strlen($cookie_data) > FORUM_MAX_COOKIE_SIZE)
{
$cookie_data = substr($cookie_data, 0, FORUM_MAX_COOKIE_SIZE);
$cookie_data = substr($cookie_data, 0, strrpos($cookie_data, ';')).';';
}
}
forum_setcookie($cookie_name.'_track', $cookie_data, time() + $pun_config['o_timeout_visit']);
$_COOKIE[$cookie_name.'_track'] = $cookie_data; // Set it directly in $_COOKIE as well
}
//
// Extract array of tracked topics from cookie
//
function get_tracked_topics()
{
global $cookie_name;
$cookie_data = isset($_COOKIE[$cookie_name.'_track']) ? $_COOKIE[$cookie_name.'_track'] : false;
if (!$cookie_data)
return array('topics' => array(), 'forums' => array());
if (strlen($cookie_data) > FORUM_MAX_COOKIE_SIZE)
return array('topics' => array(), 'forums' => array());
// Unserialize data from cookie
$tracked_topics = array('topics' => array(), 'forums' => array());
$temp = explode(';', $cookie_data);
foreach ($temp as $t)
{
$type = substr($t, 0, 1) == 'f' ? 'forums' : 'topics';
$id = intval(substr($t, 1));
$timestamp = intval(substr($t, strpos($t, '=') + 1));
if ($id > 0 && $timestamp > 0)
$tracked_topics[$type][$id] = $timestamp;
}
return $tracked_topics;
}
//
// Update posts, topics, last_post, last_post_id and last_poster for a forum
//
function update_forum($forum_id)
{
global $db;
$result = $db->query('SELECT COUNT(id), SUM(num_replies) FROM '.$db->prefix.'topics WHERE forum_id='.$forum_id) or error('Unable to fetch forum topic count', __FILE__, __LINE__, $db->error());
list($num_topics, $num_posts) = $db->fetch_row($result);
$num_posts = $num_posts + $num_topics; // $num_posts is only the sum of all replies (we have to add the topic posts)
$result = $db->query('SELECT last_post, last_post_id, last_poster FROM '.$db->prefix.'topics WHERE forum_id='.$forum_id.' AND moved_to IS NULL ORDER BY last_post DESC LIMIT 1') or error('Unable to fetch last_post/last_post_id/last_poster', __FILE__, __LINE__, $db->error());
if ($db->num_rows($result)) // There are topics in the forum
{
list($last_post, $last_post_id, $last_poster) = $db->fetch_row($result);
$db->query('UPDATE '.$db->prefix.'forums SET num_topics='.$num_topics.', num_posts='.$num_posts.', last_post='.$last_post.', last_post_id='.$last_post_id.', last_poster=\''.$db->escape($last_poster).'\' WHERE id='.$forum_id) or error('Unable to update last_post/last_post_id/last_poster', __FILE__, __LINE__, $db->error());
}
else // There are no topics
$db->query('UPDATE '.$db->prefix.'forums SET num_topics='.$num_topics.', num_posts='.$num_posts.', last_post=NULL, last_post_id=NULL, last_poster=NULL WHERE id='.$forum_id) or error('Unable to update last_post/last_post_id/last_poster', __FILE__, __LINE__, $db->error());
}
//
// Deletes any avatars owned by the specified user ID
//
function delete_avatar($user_id)
{
global $pun_config;
$filetypes = array('jpg', 'gif', 'png');
// Delete user avatar
foreach ($filetypes as $cur_type)
{
if (file_exists(PUN_ROOT.$pun_config['o_avatars_dir'].'/'.$user_id.'.'.$cur_type))
@unlink(PUN_ROOT.$pun_config['o_avatars_dir'].'/'.$user_id.'.'.$cur_type);
}
}
//
// Delete a topic and all of it's posts
//
function delete_topic($topic_id)
{
global $db;
// Delete the topic and any redirect topics
$db->query('DELETE FROM '.$db->prefix.'topics WHERE id='.$topic_id.' OR moved_to='.$topic_id) or error('Unable to delete topic', __FILE__, __LINE__, $db->error());
// Create a list of the post IDs in this topic
$post_ids = '';
$result = $db->query('SELECT id FROM '.$db->prefix.'posts WHERE topic_id='.$topic_id) or error('Unable to fetch posts', __FILE__, __LINE__, $db->error());
while ($row = $db->fetch_row($result))
$post_ids .= ($post_ids != '') ? ','.$row[0] : $row[0];
// Make sure we have a list of post IDs
if ($post_ids != '')
{
strip_search_index($post_ids);
// Delete posts in topic
$db->query('DELETE FROM '.$db->prefix.'posts WHERE topic_id='.$topic_id) or error('Unable to delete posts', __FILE__, __LINE__, $db->error());
}
// Delete any subscriptions for this topic
$db->query('DELETE FROM '.$db->prefix.'topic_subscriptions WHERE topic_id='.$topic_id) or error('Unable to delete subscriptions', __FILE__, __LINE__, $db->error());
}
//
// Delete a single post
//
function delete_post($post_id, $topic_id)
{
global $db;
$result = $db->query('SELECT id, poster, posted FROM '.$db->prefix.'posts WHERE topic_id='.$topic_id.' ORDER BY id DESC LIMIT 2') or error('Unable to fetch post info', __FILE__, __LINE__, $db->error());
list($last_id, ,) = $db->fetch_row($result);
list($second_last_id, $second_poster, $second_posted) = $db->fetch_row($result);
// Delete the post
$db->query('DELETE FROM '.$db->prefix.'posts WHERE id='.$post_id) or error('Unable to delete post', __FILE__, __LINE__, $db->error());
strip_search_index($post_id);
// Count number of replies in the topic
$result = $db->query('SELECT COUNT(id) FROM '.$db->prefix.'posts WHERE topic_id='.$topic_id) or error('Unable to fetch post count for topic', __FILE__, __LINE__, $db->error());
$num_replies = $db->result($result, 0) - 1;
// If the message we deleted is the most recent in the topic (at the end of the topic)
if ($last_id == $post_id)
{
// If there is a $second_last_id there is more than 1 reply to the topic
if (!empty($second_last_id))
$db->query('UPDATE '.$db->prefix.'topics SET last_post='.$second_posted.', last_post_id='.$second_last_id.', last_poster=\''.$db->escape($second_poster).'\', num_replies='.$num_replies.' WHERE id='.$topic_id) or error('Unable to update topic', __FILE__, __LINE__, $db->error());
else
// We deleted the only reply, so now last_post/last_post_id/last_poster is posted/id/poster from the topic itself
$db->query('UPDATE '.$db->prefix.'topics SET last_post=posted, last_post_id=id, last_poster=poster, num_replies='.$num_replies.' WHERE id='.$topic_id) or error('Unable to update topic', __FILE__, __LINE__, $db->error());
}
else
// Otherwise we just decrement the reply counter
$db->query('UPDATE '.$db->prefix.'topics SET num_replies='.$num_replies.' WHERE id='.$topic_id) or error('Unable to update topic', __FILE__, __LINE__, $db->error());
}
//
// Delete every .php file in the forum's cache directory
//
function forum_clear_cache()
{
$d = dir(FORUM_CACHE_DIR);
while (($entry = $d->read()) !== false)
{
if (substr($entry, -4) == '.php')
@unlink(FORUM_CACHE_DIR.$entry);
}
$d->close();
}
//
// Replace censored words in $text
//
function censor_words($text)
{
global $db;
static $search_for, $replace_with;
// If not already built in a previous call, build an array of censor words and their replacement text
if (!isset($search_for))
{
if (file_exists(FORUM_CACHE_DIR.'cache_censoring.php'))
include FORUM_CACHE_DIR.'cache_censoring.php';
if (!defined('PUN_CENSOR_LOADED'))
{
if (!defined('FORUM_CACHE_FUNCTIONS_LOADED'))
require PUN_ROOT.'include/cache.php';
generate_censoring_cache();
require FORUM_CACHE_DIR.'cache_censoring.php';
}
}
if (!empty($search_for))
$text = substr(ucp_preg_replace($search_for, $replace_with, ' '.$text.' '), 1, -1);
return $text;
}
//
// Determines the correct title for $user
// $user must contain the elements 'username', 'title', 'posts', 'g_id' and 'g_user_title'
//
function get_title($user)
{
global $db, $pun_config, $pun_bans, $lang_common;
static $ban_list;
// If not already built in a previous call, build an array of lowercase banned usernames
if (empty($ban_list))
{
$ban_list = array();
foreach ($pun_bans as $cur_ban)
$ban_list[] = strtolower($cur_ban['username']);
}
// If the user has a custom title
if ($user['title'] != '')
$user_title = pun_htmlspecialchars($user['title']);
// If the user is banned
else if (in_array(strtolower($user['username']), $ban_list))
$user_title = $lang_common['Banned'];
// If the user group has a default user title
else if ($user['g_user_title'] != '')
$user_title = pun_htmlspecialchars($user['g_user_title']);
// If the user is a guest
else if ($user['g_id'] == PUN_GUEST)
$user_title = $lang_common['Guest'];
// If nothing else helps, we assign the default
else
$user_title = $lang_common['Member'];
return $user_title;
}
//
// Generate a string with numbered links (for multipage scripts)
//
function paginate($num_pages, $cur_page, $link)
{
global $lang_common;
$pages = array();
$link_to_all = false;
// If $cur_page == -1, we link to all pages (used in viewforum.php)
if ($cur_page == -1)
{
$cur_page = 1;
$link_to_all = true;
}
if ($num_pages <= 1)
$pages = array('<strong class="item1">1</strong>');
else
{
// Add a previous page link
if ($num_pages > 1 && $cur_page > 1)
$pages[] = '<a rel="prev" '.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&p='.($cur_page - 1).'">'.$lang_common['Previous'].'</a>';
if ($cur_page > 3)
{
$pages[] = '<a'.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&p=1">1</a>';
if ($cur_page > 5)
$pages[] = '<span class="spacer">'.$lang_common['Spacer'].'</span>';
}
// Don't ask me how the following works. It just does, OK? :-)
for ($current = ($cur_page == 5) ? $cur_page - 3 : $cur_page - 2, $stop = ($cur_page + 4 == $num_pages) ? $cur_page + 4 : $cur_page + 3; $current < $stop; ++$current)
{
if ($current < 1 || $current > $num_pages)
continue;
else if ($current != $cur_page || $link_to_all)
$pages[] = '<a'.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&p='.$current.'">'.forum_number_format($current).'</a>';
else
$pages[] = '<strong'.(empty($pages) ? ' class="item1"' : '').'>'.forum_number_format($current).'</strong>';
}
if ($cur_page <= ($num_pages-3))
{
if ($cur_page != ($num_pages-3) && $cur_page != ($num_pages-4))
$pages[] = '<span class="spacer">'.$lang_common['Spacer'].'</span>';
$pages[] = '<a'.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&p='.$num_pages.'">'.forum_number_format($num_pages).'</a>';
}
// Add a next page link
if ($num_pages > 1 && !$link_to_all && $cur_page < $num_pages)
$pages[] = '<a rel="next" '.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&p='.($cur_page +1).'">'.$lang_common['Next'].'</a>';
}
return implode(' ', $pages);
}
//
// Display a message
//
function message($message, $no_back_link = false, $http_status = null)
{
if (isset($_GET['ajax']))
{
echo $message;
exit;
}
{
global $db, $lang_common, $pun_config, $pun_start, $tpl_main, $pun_user;
// Did we receive a custom header?
if(!is_null($http_status)) {
header('HTTP/1.1 ' . $http_status);
}
if (!defined('PUN_HEADER'))
{
$page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), $lang_common['Info']);
define('PUN_ACTIVE_PAGE', 'index');
require PUN_ROOT.'header.php';
}
?>
<div id="msg" class="block">
<h2><span><?php echo $lang_common['Info'] ?></span></h2>
<div class="box">
<div class="inbox">
<p><?php echo $message ?></p>
<?php if (!$no_back_link): ?> <p><a href="javascript: history.go(-1)"><?php echo $lang_common['Go back'] ?></a></p>
<?php endif; ?> </div>
</div>
</div>
<?php
require PUN_ROOT.'footer.php';
}
//
// Format a time string according to $time_format and time zones
//
function format_time($timestamp, $date_only = false, $date_format = null, $time_format = null, $time_only = false, $no_text = false)
{
global $pun_config, $lang_common, $pun_user, $forum_date_formats, $forum_time_formats;
if ($timestamp == '')
return $lang_common['Never'];
$diff = ($pun_user['timezone'] + $pun_user['dst']) * 3600;
$timestamp += $diff;
$now = time();
if(is_null($date_format))
$date_format = $forum_date_formats[$pun_user['date_format']];
if(is_null($time_format))
$time_format = $forum_time_formats[$pun_user['time_format']];
$date = gmdate($date_format, $timestamp);
$today = gmdate($date_format, $now+$diff);
$yesterday = gmdate($date_format, $now+$diff-86400);
if(!$no_text)
{
if ($date == $today)
$date = $lang_common['Today'];
else if ($date == $yesterday)
$date = $lang_common['Yesterday'];
}
if ($date_only)
return $date;
else if ($time_only)
return gmdate($time_format, $timestamp);
else
return $date.' '.gmdate($time_format, $timestamp);
}
//
// A wrapper for PHP's number_format function
//
function forum_number_format($number, $decimals = 0)
{
global $lang_common;
return is_numeric($number) ? number_format($number, $decimals, $lang_common['lang_decimal_point'], $lang_common['lang_thousands_sep']) : $number;
}
//
// Generate a random key of length $len
//
function random_key($len, $readable = false, $hash = false)
{
$key = '';
if ($hash)
$key = substr(pun_hash(uniqid(rand(), true)), 0, $len);
else if ($readable)
{
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
for ($i = 0; $i < $len; ++$i)
$key .= substr($chars, (mt_rand() % strlen($chars)), 1);
}
else
{
for ($i = 0; $i < $len; ++$i)
$key .= chr(mt_rand(33, 126));
}
return $key;
}
//
// Make sure that HTTP_REFERER matches base_url/script
//
function confirm_referrer($script, $error_msg = false)
{
global $pun_config, $lang_common;
// There is no referrer
if (empty($_SERVER['HTTP_REFERER']))
message($error_msg ? $error_msg : $lang_common['Bad referrer']);
$referrer = parse_url(strtolower($_SERVER['HTTP_REFERER']));
// Remove www subdomain if it exists
if (strpos($referrer['host'], 'www.') === 0)
$referrer['host'] = substr($referrer['host'], 4);
$valid = parse_url(strtolower(get_base_url().'/'.$script));
// Remove www subdomain if it exists
if (strpos($valid['host'], 'www.') === 0)
$valid['host'] = substr($valid['host'], 4);
// Check the host and path match. Ignore the scheme, port, etc.
if ($referrer['host'] != $valid['host'] || $referrer['path'] != $valid['path'])
message($error_msg ? $error_msg : $lang_common['Bad referrer']);
}
//
// Generate a random password of length $len
// Compatibility wrapper for random_key
//
function random_pass($len)
{
return random_key($len, true);
}
//
// Compute a hash of $str
//
function pun_hash($str)
{
return sha1($str);
}
//
// Try to determine the correct remote IP-address
//
function get_remote_address()
{
$remote_addr = $_SERVER['REMOTE_ADDR'];
// If we are behind a reverse proxy try to find the real users IP
if (defined('FORUM_BEHIND_REVERSE_PROXY'))
{
if (isset($_SERVER['HTTP_X_FORWARDED_FOR']))
{
// The general format of the field is:
// X-Forwarded-For: client1, proxy1, proxy2
// where the value is a comma+space separated list of IP addresses, the left-most being the farthest downstream client,
// and each successive proxy that passed the request adding the IP address where it received the request from.
$forwarded_for = explode(',', $_SERVER['HTTP_X_FORWARDED_FOR']);
$forwarded_for = trim($forwarded_for[0]);
if (@preg_match('%^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$%', $forwarded_for) || @preg_match('%^((([0-9A-Fa-f]{1,4}:){7}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}:[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){5}:([0-9A-Fa-f]{1,4}:)?[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){4}:([0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){3}:([0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){2}:([0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){6}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(([0-9A-Fa-f]{1,4}:){0,5}:((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|(::([0-9A-Fa-f]{1,4}:){0,5}((\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b)\.){3}(\b((25[0-5])|(1\d{2})|(2[0-4]\d)|(\d{1,2}))\b))|([0-9A-Fa-f]{1,4}::([0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})|(::([0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})|(([0-9A-Fa-f]{1,4}:){1,7}:))$%', $forwarded_for))
$remote_addr = $forwarded_for;
}
}
return $remote_addr;
}
//
// Calls htmlspecialchars with a few options already set
//
function pun_htmlspecialchars($str)
{
return htmlspecialchars($str, ENT_QUOTES, 'UTF-8');
}
//
// Calls htmlspecialchars_decode with a few options already set
//
function pun_htmlspecialchars_decode($str)
{
if (function_exists('htmlspecialchars_decode'))
return htmlspecialchars_decode($str, ENT_QUOTES);
static $translations;
if (!isset($translations))
{
$translations = get_html_translation_table(HTML_SPECIALCHARS, ENT_QUOTES);
$translations['''] = '\''; // get_html_translation_table doesn't include ' which is what htmlspecialchars translates ' to, but apparently that is okay?! http://bugs.php.net/bug.php?id=25927
$translations = array_flip($translations);
}
return strtr($str, $translations);
}
//
// A wrapper for utf8_strlen for compatibility
//
function pun_strlen($str)
{
return utf8_strlen($str);
}
//
// Convert \r\n and \r to \n
//
function pun_linebreaks($str)
{
return str_replace("\r", "\n", str_replace("\r\n", "\n", $str));
}
//
// A wrapper for utf8_trim for compatibility
//
function pun_trim($str, $charlist = false)
{
return is_string($str) ? utf8_trim($str, $charlist) : '';
}
//
// Checks if a string is in all uppercase
//
function is_all_uppercase($string)
{
return utf8_strtoupper($string) == $string && utf8_strtolower($string) != $string;
}
//
// Inserts $element into $input at $offset
// $offset can be either a numerical offset to insert at (eg: 0 inserts at the beginning of the array)
// or a string, which is the key that the new element should be inserted before
// $key is optional: it's used when inserting a new key/value pair into an associative array
//
function array_insert(&$input, $offset, $element, $key = null)
{
if (is_null($key))
$key = $offset;
// Determine the proper offset if we're using a string
if (!is_int($offset))
$offset = array_search($offset, array_keys($input), true);
// Out of bounds checks
if ($offset > count($input))
$offset = count($input);
else if ($offset < 0)
$offset = 0;
$input = array_merge(array_slice($input, 0, $offset), array($key => $element), array_slice($input, $offset));
}
//
// Display a message when board is in maintenance mode
//
function maintenance_message()
{
global $db, $pun_config, $lang_common, $pun_user;
// Send no-cache headers
header('Expires: Thu, 21 Jul 1977 07:30:00 GMT'); // When yours truly first set eyes on this world! :)
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache'); // For HTTP/1.0 compatibility
// Send the Content-type header in case the web server is setup to send something else
header('Content-type: text/html; charset=utf-8');
// Deal with newlines, tabs and multiple spaces
$pattern = array("\t", ' ', ' ');
$replace = array('* * ', '* ', ' *');
$message = str_replace($pattern, $replace, $pun_config['o_maintenance_message']);
if (file_exists(PUN_ROOT.'style/'.$pun_user['style'].'/maintenance.tpl'))
{
$tpl_file = PUN_ROOT.'style/'.$pun_user['style'].'/maintenance.tpl';
$tpl_inc_dir = PUN_ROOT.'style/'.$pun_user['style'].'/';
}
else
{
$tpl_file = PUN_ROOT.'include/template/maintenance.tpl';
$tpl_inc_dir = PUN_ROOT.'include/user/';
}
$tpl_maint = file_get_contents($tpl_file);
// START SUBST - <pun_include "*">
preg_match_all('%<pun_include "([^/\\\\]*?)\.(php[45]?|inc|html?|txt)">%i', $tpl_maint, $pun_includes, PREG_SET_ORDER);
foreach ($pun_includes as $cur_include)
{
ob_start();
// Allow for overriding user includes, too.
if (file_exists($tpl_inc_dir.$cur_include[1].'.'.$cur_include[2]))
require $tpl_inc_dir.$cur_include[1].'.'.$cur_include[2];
else if (file_exists(PUN_ROOT.'include/user/'.$cur_include[1].'.'.$cur_include[2]))
require PUN_ROOT.'include/user/'.$cur_include[1].'.'.$cur_include[2];
else
error(sprintf($lang_common['Pun include error'], htmlspecialchars($cur_include[0]), basename($tpl_file)));
$tpl_temp = ob_get_contents();
$tpl_maint = str_replace($cur_include[0], $tpl_temp, $tpl_maint);
ob_end_clean();
}
// END SUBST - <pun_include "*">
// START SUBST - <pun_language>
$tpl_maint = str_replace('<pun_language>', $lang_common['lang_identifier'], $tpl_maint);
// END SUBST - <pun_language>
// START SUBST - <pun_content_direction>
$tpl_maint = str_replace('<pun_content_direction>', $lang_common['lang_direction'], $tpl_maint);
// END SUBST - <pun_content_direction>
// START SUBST - <pun_head>
ob_start();
$page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), $lang_common['Maintenance']);
?>
<title><?php echo generate_page_title($page_title) ?></title>
<link rel="stylesheet" type="text/css" href="style/<?php echo $pun_user['style'].'.css' ?>" />
<?php
$tpl_temp = trim(ob_get_contents());
$tpl_maint = str_replace('<pun_head>', $tpl_temp, $tpl_maint);
ob_end_clean();
// END SUBST - <pun_head>
// START SUBST - <pun_maint_main>
ob_start();
?>
<div class="block">
<h2><?php echo $lang_common['Maintenance'] ?></h2>
<div class="box">
<div class="inbox">
<p><?php echo $message ?></p>
</div>
</div>
</div>
<?php
$tpl_temp = trim(ob_get_contents());
$tpl_maint = str_replace('<pun_maint_main>', $tpl_temp, $tpl_maint);
ob_end_clean();
// END SUBST - <pun_maint_main>
// End the transaction
$db->end_transaction();
// Close the db connection (and free up any result data)
$db->close();
exit($tpl_maint);
}
//
// Display $message and redirect user to $destination_url
//
function redirect($destination_url, $message)
{
global $db, $pun_config, $lang_common, $pun_user;
if (isset($_GET['ajax']))
return;
// Prefix with base_url (unless there's already a valid URI)
if (strpos($destination_url, 'http://') !== 0 && strpos($destination_url, 'https://') !== 0 && strpos($destination_url, '/') !== 0)
$destination_url = get_base_url(true).'/'.$destination_url;
// Do a little spring cleaning
$destination_url = preg_replace('%([\r\n])|(\%0[ad])|(;\s*data\s*:)%i', '', $destination_url);
// If the delay is 0 seconds, we might as well skip the redirect all together
if ($pun_config['o_redirect_delay'] == '0')
header('Location: '.str_replace('&', '&', $destination_url));
// Send no-cache headers
header('Expires: Thu, 21 Jul 1977 07:30:00 GMT'); // When yours truly first set eyes on this world! :)
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache'); // For HTTP/1.0 compatibility
// Send the Content-type header in case the web server is setup to send something else
header('Content-type: text/html; charset=utf-8');
if (file_exists(PUN_ROOT.'style/'.$pun_user['style'].'/redirect.tpl'))
{
$tpl_file = PUN_ROOT.'style/'.$pun_user['style'].'/redirect.tpl';
$tpl_inc_dir = PUN_ROOT.'style/'.$pun_user['style'].'/';
}
else
{
$tpl_file = PUN_ROOT.'include/template/redirect.tpl';
$tpl_inc_dir = PUN_ROOT.'include/user/';
}
$tpl_redir = file_get_contents($tpl_file);
// START SUBST - <pun_include "*">
preg_match_all('%<pun_include "([^/\\\\]*?)\.(php[45]?|inc|html?|txt)">%i', $tpl_redir, $pun_includes, PREG_SET_ORDER);
foreach ($pun_includes as $cur_include)
{
ob_start();
// Allow for overriding user includes, too.
if (file_exists($tpl_inc_dir.$cur_include[1].'.'.$cur_include[2]))
require $tpl_inc_dir.$cur_include[1].'.'.$cur_include[2];
else if (file_exists(PUN_ROOT.'include/user/'.$cur_include[1].'.'.$cur_include[2]))
require PUN_ROOT.'include/user/'.$cur_include[1].'.'.$cur_include[2];
else
error(sprintf($lang_common['Pun include error'], htmlspecialchars($cur_include[0]), basename($tpl_file)));
$tpl_temp = ob_get_contents();
$tpl_redir = str_replace($cur_include[0], $tpl_temp, $tpl_redir);
ob_end_clean();
}
// END SUBST - <pun_include "*">
// START SUBST - <pun_language>
$tpl_redir = str_replace('<pun_language>', $lang_common['lang_identifier'], $tpl_redir);
// END SUBST - <pun_language>
// START SUBST - <pun_content_direction>
$tpl_redir = str_replace('<pun_content_direction>', $lang_common['lang_direction'], $tpl_redir);
// END SUBST - <pun_content_direction>
// START SUBST - <pun_head>
ob_start();
$page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), $lang_common['Redirecting']);
?>
<meta http-equiv="refresh" content="<?php echo $pun_config['o_redirect_delay'] ?>;URL=<?php echo str_replace(array('<', '>', '"'), array('<', '>', '"'), $destination_url) ?>" />
<title><?php echo generate_page_title($page_title) ?></title>
<link rel="stylesheet" type="text/css" href="style/<?php echo $pun_user['style'].'.css' ?>" />
<?php
$tpl_temp = trim(ob_get_contents());
$tpl_redir = str_replace('<pun_head>', $tpl_temp, $tpl_redir);
ob_end_clean();
// END SUBST - <pun_head>
// START SUBST - <pun_redir_main>
ob_start();
?>
<div class="block">
<h2><?php echo $lang_common['Redirecting'] ?></h2>
<div class="box">
<div class="inbox">
<p><?php echo $message.'<br /><br /><a href="'.$destination_url.'">'.$lang_common['Click redirect'].'</a>' ?></p>
</div>
</div>
</div>
<?php
$tpl_temp = trim(ob_get_contents());
$tpl_redir = str_replace('<pun_redir_main>', $tpl_temp, $tpl_redir);
ob_end_clean();
// END SUBST - <pun_redir_main>
// START SUBST - <pun_footer>
ob_start();
// End the transaction
$db->end_transaction();
// Display executed queries (if enabled)
if (defined('PUN_SHOW_QUERIES'))
display_saved_queries();
$tpl_temp = trim(ob_get_contents());
$tpl_redir = str_replace('<pun_footer>', $tpl_temp, $tpl_redir);
ob_end_clean();
// END SUBST - <pun_footer>
// Close the db connection (and free up any result data)
$db->close();
exit($tpl_redir);
}
//
// Display a simple error message
//
function error($message, $file = null, $line = null, $db_error = false)
{
global $pun_config, $lang_common;
// Set some default settings if the script failed before $pun_config could be populated
if (empty($pun_config))
{
$pun_config = array(
'o_board_title' => 'FluxBB',
'o_gzip' => '0'
);
}
// Set some default translations if the script failed before $lang_common could be populated
if (empty($lang_common))
{
$lang_common = array(
'Title separator' => ' / ',
'Page' => 'Page %s'
);
}
// Empty all output buffers and stop buffering
while (@ob_end_clean());
// "Restart" output buffering if we are using ob_gzhandler (since the gzip header is already sent)
if ($pun_config['o_gzip'] && extension_loaded('zlib'))
ob_start('ob_gzhandler');
// Send no-cache headers
header('Expires: Thu, 21 Jul 1977 07:30:00 GMT'); // When yours truly first set eyes on this world! :)
header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
header('Cache-Control: post-check=0, pre-check=0', false);
header('Pragma: no-cache'); // For HTTP/1.0 compatibility
// Send the Content-type header in case the web server is setup to send something else
header('Content-type: text/html; charset=utf-8');
?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?php $page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), 'Error') ?>
<title><?php echo generate_page_title($page_title) ?></title>
<style type="text/css">
<!--
BODY {MARGIN: 10% 20% auto 20%; font: 10px Verdana, Arial, Helvetica, sans-serif}
#errorbox {BORDER: 1px solid #B84623}
H2 {MARGIN: 0; COLOR: #FFFFFF; BACKGROUND-COLOR: #B84623; FONT-SIZE: 1.1em; PADDING: 5px 4px}
#errorbox DIV {PADDING: 6px 5px; BACKGROUND-COLOR: #F1F1F1}
-->
</style>
</head>
<body>
<div id="errorbox">
<h2>An error was encountered</h2>
<div>
<?php
if (defined('PUN_DEBUG') && !is_null($file) && !is_null($line))
{
echo "\t\t".'<strong>File:</strong> '.$file.'<br />'."\n\t\t".'<strong>Line:</strong> '.$line.'<br /><br />'."\n\t\t".'<strong>FluxBB reported</strong>: '.$message."\n";
if ($db_error)
{
echo "\t\t".'<br /><br /><strong>Database reported:</strong> '.pun_htmlspecialchars($db_error['error_msg']).(($db_error['error_no']) ? ' (Errno: '.$db_error['error_no'].')' : '')."\n";
if ($db_error['error_sql'] != '')
echo "\t\t".'<br /><br /><strong>Failed query:</strong> '.pun_htmlspecialchars($db_error['error_sql'])."\n";
}
}
else
echo "\t\t".'Error: <strong>'.$message.'.</strong>'."\n";
?>
</div>
</div>
</body>
</html>
<?php
// If a database connection was established (before this error) we close it
if ($db_error)
$GLOBALS['db']->close();
exit;
}
//
// Unset any variables instantiated as a result of register_globals being enabled
//
function forum_unregister_globals()
{
$register_globals = ini_get('register_globals');
if ($register_globals === '' || $register_globals === '0' || strtolower($register_globals) === 'off')
return;
// Prevent script.php?GLOBALS[foo]=bar
if (isset($_REQUEST['GLOBALS']) || isset($_FILES['GLOBALS']))
exit('I\'ll have a steak sandwich and... a steak sandwich.');
// Variables that shouldn't be unset
$no_unset = array('GLOBALS', '_GET', '_POST', '_COOKIE', '_REQUEST', '_SERVER', '_ENV', '_FILES');
// Remove elements in $GLOBALS that are present in any of the superglobals
$input = array_merge($_GET, $_POST, $_COOKIE, $_SERVER, $_ENV, $_FILES, isset($_SESSION) && is_array($_SESSION) ? $_SESSION : array());
foreach ($input as $k => $v)
{
if (!in_array($k, $no_unset) && isset($GLOBALS[$k]))
{
unset($GLOBALS[$k]);
unset($GLOBALS[$k]); // Double unset to circumvent the zend_hash_del_key_or_index hole in PHP <4.4.3 and <5.1.4
}
}
}
//
// Removes any "bad" characters (characters which mess with the display of a page, are invisible, etc) from user input
//
function forum_remove_bad_characters()
{
$_GET = remove_bad_characters($_GET);
$_POST = remove_bad_characters($_POST);
$_COOKIE = remove_bad_characters($_COOKIE);
$_REQUEST = remove_bad_characters($_REQUEST);
}
//
// Removes any "bad" characters (characters which mess with the display of a page, are invisible, etc) from the given string
// See: http://kb.mozillazine.org/Network.IDN.blacklist_chars
//
function remove_bad_characters($array)
{
static $bad_utf8_chars;
if (!isset($bad_utf8_chars))
{
$bad_utf8_chars = array(
"\xcc\xb7" => '', // COMBINING SHORT SOLIDUS OVERLAY 0337 *
"\xcc\xb8" => '', // COMBINING LONG SOLIDUS OVERLAY 0338 *
"\xe1\x85\x9F" => '', // HANGUL CHOSEONG FILLER 115F *
"\xe1\x85\xA0" => '', // HANGUL JUNGSEONG FILLER 1160 *
"\xe2\x80\x8b" => '', // ZERO WIDTH SPACE 200B *
"\xe2\x80\x8c" => '', // ZERO WIDTH NON-JOINER 200C
"\xe2\x80\x8d" => '', // ZERO WIDTH JOINER 200D
"\xe2\x80\x8e" => '', // LEFT-TO-RIGHT MARK 200E
"\xe2\x80\x8f" => '', // RIGHT-TO-LEFT MARK 200F
"\xe2\x80\xaa" => '', // LEFT-TO-RIGHT EMBEDDING 202A
"\xe2\x80\xab" => '', // RIGHT-TO-LEFT EMBEDDING 202B
"\xe2\x80\xac" => '', // POP DIRECTIONAL FORMATTING 202C
"\xe2\x80\xad" => '', // LEFT-TO-RIGHT OVERRIDE 202D
"\xe2\x80\xae" => '', // RIGHT-TO-LEFT OVERRIDE 202E
"\xe2\x80\xaf" => '', // NARROW NO-BREAK SPACE 202F *
"\xe2\x81\x9f" => '', // MEDIUM MATHEMATICAL SPACE 205F *
"\xe2\x81\xa0" => '', // WORD JOINER 2060
"\xe3\x85\xa4" => '', // HANGUL FILLER 3164 *
"\xef\xbb\xbf" => '', // ZERO WIDTH NO-BREAK SPACE FEFF
"\xef\xbe\xa0" => '', // HALFWIDTH HANGUL FILLER FFA0 *
"\xef\xbf\xb9" => '', // INTERLINEAR ANNOTATION ANCHOR FFF9 *
"\xef\xbf\xba" => '', // INTERLINEAR ANNOTATION SEPARATOR FFFA *
"\xef\xbf\xbb" => '', // INTERLINEAR ANNOTATION TERMINATOR FFFB *
"\xef\xbf\xbc" => '', // OBJECT REPLACEMENT CHARACTER FFFC *
"\xef\xbf\xbd" => '', // REPLACEMENT CHARACTER FFFD *
"\xe2\x80\x80" => ' ', // EN QUAD 2000 *
"\xe2\x80\x81" => ' ', // EM QUAD 2001 *
"\xe2\x80\x82" => ' ', // EN SPACE 2002 *
"\xe2\x80\x83" => ' ', // EM SPACE 2003 *
"\xe2\x80\x84" => ' ', // THREE-PER-EM SPACE 2004 *
"\xe2\x80\x85" => ' ', // FOUR-PER-EM SPACE 2005 *
"\xe2\x80\x86" => ' ', // SIX-PER-EM SPACE 2006 *
"\xe2\x80\x87" => ' ', // FIGURE SPACE 2007 *
"\xe2\x80\x88" => ' ', // PUNCTUATION SPACE 2008 *
"\xe2\x80\x89" => ' ', // THIN SPACE 2009 *
"\xe2\x80\x8a" => ' ', // HAIR SPACE 200A *
"\xE3\x80\x80" => ' ', // IDEOGRAPHIC SPACE 3000 *
);
}
if (is_array($array))
return array_map('remove_bad_characters', $array);
// Strip out any invalid characters
$array = utf8_bad_strip($array);
// Remove control characters
$array = preg_replace('%[\x00-\x08\x0b-\x0c\x0e-\x1f]%', '', $array);
// Replace some "bad" characters
$array = str_replace(array_keys($bad_utf8_chars), array_values($bad_utf8_chars), $array);
return $array;
}
//
// Converts the file size in bytes to a human readable file size
//
function file_size($size)
{
global $lang_common;
$units = array('B', 'KiB', 'MiB', 'GiB', 'TiB', 'PiB', 'EiB');
for ($i = 0; $size > 1024; $i++)
$size /= 1024;
return sprintf($lang_common['Size unit '.$units[$i]], round($size, 2));
}
//
// Fetch a list of available styles
//
function forum_list_styles()
{
$styles = array();
$d = dir(PUN_ROOT.'style');
while (($entry = $d->read()) !== false)
{
if ($entry{0} == '.')
continue;
if (substr($entry, -4) == '.css')
$styles[] = substr($entry, 0, -4);
}
$d->close();
natcasesort($styles);
return $styles;
}
//
// Fetch a list of available language packs
//
function forum_list_langs()
{
$languages = array();
$d = dir(PUN_ROOT.'lang');
while (($entry = $d->read()) !== false)
{
if ($entry{0} == '.')
continue;
if (is_dir(PUN_ROOT.'lang/'.$entry) && file_exists(PUN_ROOT.'lang/'.$entry.'/common.php'))
$languages[] = $entry;
}
$d->close();
natcasesort($languages);
return $languages;
}
//
// Generate a cache ID based on the last modification time for all stopwords files
//
function generate_stopwords_cache_id()
{
$files = glob(PUN_ROOT.'lang/*/stopwords.txt');
if ($files === false)
return 'cache_id_error';
$hash = array();
foreach ($files as $file)
{
$hash[] = $file;
$hash[] = filemtime($file);
}
return sha1(implode('|', $hash));
}
//
// Fetch a list of available admin plugins
//
function forum_list_plugins($is_admin)
{
$plugins = array();
$d = dir(PUN_ROOT.'plugins');
while (($entry = $d->read()) !== false)
{
if ($entry{0} == '.')
continue;
$prefix = substr($entry, 0, strpos($entry, '_'));
$suffix = substr($entry, strlen($entry) - 4);
if ($suffix == '.php' && ((!$is_admin && $prefix == 'AMP') || ($is_admin && ($prefix == 'AP' || $prefix == 'AMP'))))
$plugins[$entry] = substr($entry, strpos($entry, '_') + 1, -4);
}
$d->close();
natcasesort($plugins);
return $plugins;
}
//
// Split text into chunks ($inside contains all text inside $start and $end, and $outside contains all text outside)
//
function split_text($text, $start, $end, $retab = true)
{
global $pun_config, $lang_common;
$result = array(0 => array(), 1 => array()); // 0 = inside, 1 = outside
// split the text into parts
$parts = preg_split('%'.preg_quote($start, '%').'(.*)'.preg_quote($end, '%').'%Us', $text, -1, PREG_SPLIT_DELIM_CAPTURE);
$num_parts = count($parts);
// preg_split results in outside parts having even indices, inside parts having odd
for ($i = 0;$i < $num_parts;$i++)
$result[1 - ($i % 2)][] = $parts[$i];
if ($pun_config['o_indent_num_spaces'] != 8 && $retab)
{
$spaces = str_repeat(' ', $pun_config['o_indent_num_spaces']);
$result[1] = str_replace("\t", $spaces, $result[1]);
}
return $result;
}
//
// Extract blocks from a text with a starting and ending string
// This function always matches the most outer block so nesting is possible
//
function extract_blocks($text, $start, $end, $retab = true)
{
global $pun_config;
$code = array();
$start_len = strlen($start);
$end_len = strlen($end);
$regex = '%(?:'.preg_quote($start, '%').'|'.preg_quote($end, '%').')%';
$matches = array();
if (preg_match_all($regex, $text, $matches))
{
$counter = $offset = 0;
$start_pos = $end_pos = false;
foreach ($matches[0] as $match)
{
if ($match == $start)
{
if ($counter == 0)
$start_pos = strpos($text, $start);
$counter++;
}
elseif ($match == $end)
{
$counter--;
if ($counter == 0)
$end_pos = strpos($text, $end, $offset + 1);
$offset = strpos($text, $end, $offset + 1);
}
if ($start_pos !== false && $end_pos !== false)
{
$code[] = substr($text, $start_pos + $start_len,
$end_pos - $start_pos - $start_len);
$text = substr_replace($text, "\1", $start_pos,
$end_pos - $start_pos + $end_len);
$start_pos = $end_pos = false;
$offset = 0;
}
}
}
if ($pun_config['o_indent_num_spaces'] != 8 && $retab)
{
$spaces = str_repeat(' ', $pun_config['o_indent_num_spaces']);
$text = str_replace("\t", $spaces, $text);
}
return array($code, $text);
}
//
// function url_valid($url) {
//
// Return associative array of valid URI components, or FALSE if $url is not
// RFC-3986 compliant. If the passed URL begins with: "www." or "ftp.", then
// "http://" or "ftp://" is prepended and the corrected full-url is stored in
// the return array with a key name "url". This value should be used by the caller.
//
// Return value: FALSE if $url is not valid, otherwise array of URI components:
// e.g.
// Given: "http://www.jmrware.com:80/articles?height=10&width=75#fragone"
// Array(
// [scheme] => http
// [authority] => www.jmrware.com:80
// [userinfo] =>
// [host] => www.jmrware.com
// [IP_literal] =>
// [IPV6address] =>
// [ls32] =>
// [IPvFuture] =>
// [IPv4address] =>
// [regname] => www.jmrware.com
// [port] => 80
// [path_abempty] => /articles
// [query] => height=10&width=75
// [fragment] => fragone
// [url] => http://www.jmrware.com:80/articles?height=10&width=75#fragone
// )
function url_valid($url)
{
if (strpos($url, 'www.') === 0) $url = 'http://'. $url;
if (strpos($url, 'ftp.') === 0) $url = 'ftp://'. $url;
if (!preg_match('/# Valid absolute URI having a non-empty, valid DNS host.
^
(?P<scheme>[A-Za-z][A-Za-z0-9+\-.]*):\/\/
(?P<authority>
(?:(?P<userinfo>(?:[A-Za-z0-9\-._~!$&\'()*+,;=:]|%[0-9A-Fa-f]{2})*)@)?
(?P<host>
(?P<IP_literal>
\[
(?:
(?P<IPV6address>
(?: (?:[0-9A-Fa-f]{1,4}:){6}
| ::(?:[0-9A-Fa-f]{1,4}:){5}
| (?: [0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){4}
| (?:(?:[0-9A-Fa-f]{1,4}:){0,1}[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){3}
| (?:(?:[0-9A-Fa-f]{1,4}:){0,2}[0-9A-Fa-f]{1,4})?::(?:[0-9A-Fa-f]{1,4}:){2}
| (?:(?:[0-9A-Fa-f]{1,4}:){0,3}[0-9A-Fa-f]{1,4})?:: [0-9A-Fa-f]{1,4}:
| (?:(?:[0-9A-Fa-f]{1,4}:){0,4}[0-9A-Fa-f]{1,4})?::
)
(?P<ls32>[0-9A-Fa-f]{1,4}:[0-9A-Fa-f]{1,4}
| (?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}
(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)
)
| (?:(?:[0-9A-Fa-f]{1,4}:){0,5}[0-9A-Fa-f]{1,4})?:: [0-9A-Fa-f]{1,4}
| (?:(?:[0-9A-Fa-f]{1,4}:){0,6}[0-9A-Fa-f]{1,4})?::
)
| (?P<IPvFuture>[Vv][0-9A-Fa-f]+\.[A-Za-z0-9\-._~!$&\'()*+,;=:]+)
)
\]
)
| (?P<IPv4address>(?:(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}
(?:25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?))
| (?P<regname>(?:[A-Za-z0-9\-._~!$&\'()*+,;=]|%[0-9A-Fa-f]{2})+)
)
(?::(?P<port>[0-9]*))?
)
(?P<path_abempty>(?:\/(?:[A-Za-z0-9\-._~!$&\'()*+,;=:@]|%[0-9A-Fa-f]{2})*)*)
(?:\?(?P<query> (?:[A-Za-z0-9\-._~!$&\'()*+,;=:@\\/?]|%[0-9A-Fa-f]{2})*))?
(?:\#(?P<fragment> (?:[A-Za-z0-9\-._~!$&\'()*+,;=:@\\/?]|%[0-9A-Fa-f]{2})*))?
$
/mx', $url, $m)) return FALSE;
switch ($m['scheme'])
{
case 'https':
case 'http':
if ($m['userinfo']) return FALSE; // HTTP scheme does not allow userinfo.
break;
case 'ftps':
case 'ftp':
break;
default:
return FALSE; // Unrecognised URI scheme. Default to FALSE.
}
// Validate host name conforms to DNS "dot-separated-parts".
if ($m{'regname'}) // If host regname specified, check for DNS conformance.
{
if (!preg_match('/# HTTP DNS host name.
^ # Anchor to beginning of string.
(?!.{256}) # Overall host length is less than 256 chars.
(?: # Group dot separated host part alternatives.
[0-9A-Za-z]\. # Either a single alphanum followed by dot
| # or... part has more than one char (63 chars max).
[0-9A-Za-z] # Part first char is alphanum (no dash).
[\-0-9A-Za-z]{0,61} # Internal chars are alphanum plus dash.
[0-9A-Za-z] # Part last char is alphanum (no dash).
\. # Each part followed by literal dot.
)* # One or more parts before top level domain.
(?: # Explicitly specify top level domains.
com|edu|gov|int|mil|net|org|biz|
info|name|pro|aero|coop|museum|
asia|cat|jobs|mobi|tel|travel|
[A-Za-z]{2}) # Country codes are exqactly two alpha chars.
$ # Anchor to end of string.
/ix', $m['host'])) return FALSE;
}
$m['url'] = $url;
for ($i = 0; isset($m[$i]); ++$i) unset($m[$i]);
return $m; // return TRUE == array of useful named $matches plus the valid $url.
}
//
// Replace string matching regular expression
//
// This function takes care of possibly disabled unicode properties in PCRE builds
//
function ucp_preg_replace($pattern, $replace, $subject)
{
$replaced = preg_replace($pattern, $replace, $subject);
// If preg_replace() returns false, this probably means unicode support is not built-in, so we need to modify the pattern a little
if ($replaced === false)
{
if (is_array($pattern))
{
foreach ($pattern as $cur_key => $cur_pattern)
$pattern[$cur_key] = str_replace('\p{L}\p{N}', '\w', $cur_pattern);
$replaced = preg_replace($pattern, $replace, $subject);
}
else
$replaced = preg_replace(str_replace('\p{L}\p{N}', '\w', $pattern), $replace, $subject);
}
return $replaced;
}
//
// Replace four-byte characters with a question mark
//
// As MySQL cannot properly handle four-byte characters with the default utf-8
// charset up until version 5.5.3 (where a special charset has to be used), they
// need to be replaced, by question marks in this case.
//
function strip_bad_multibyte_chars($str)
{
$result = '';
$length = strlen($str);
for ($i = 0; $i < $length; $i++)
{
// Replace four-byte characters (11110www 10zzzzzz 10yyyyyy 10xxxxxx)
$ord = ord($str[$i]);
if ($ord >= 240 && $ord <= 244)
{
$result .= '?';
$i += 3;
}
else
{
$result .= $str[$i];
}
}
return $result;
}
//
// Check whether a file/folder is writable.
//
// This function also works on Windows Server where ACLs seem to be ignored.
//
function forum_is_writable($path)
{
if (is_dir($path))
{
$path = rtrim($path, '/').'/';
return forum_is_writable($path.uniqid(mt_rand()).'.tmp');
}
// Check temporary file for read/write capabilities
$rm = file_exists($path);
$f = @fopen($path, 'a');
if ($f === false)
return false;
fclose($f);
if (!$rm)
@unlink($path);
return true;
}
// DEBUG FUNCTIONS BELOW
//
// Display executed queries (if enabled)
//
function display_saved_queries()
{
global $db, $lang_common;
// Get the queries so that we can print them out
$saved_queries = $db->get_saved_queries();
?>
<div id="debug" class="blocktable">
<h2><span><?php echo $lang_common['Debug table'] ?></span></h2>
<div class="box">
<div class="inbox">
<table cellspacing="0">
<thead>
<tr>
<th class="tcl" scope="col"><?php echo $lang_common['Query times'] ?></th>
<th class="tcr" scope="col"><?php echo $lang_common['Query'] ?></th>
</tr>
</thead>
<tbody>
<?php
$query_time_total = 0.0;
foreach ($saved_queries as $cur_query)
{
$query_time_total += $cur_query[1];
?>
<tr>
<td class="tcl"><?php echo ($cur_query[1] != 0) ? $cur_query[1] : '*' ?></td>
<td class="tcr"><?php echo pun_htmlspecialchars($cur_query[0]) ?></td>
</tr>
<?php
}
?>
<tr>
<td class="tcl" colspan="2"><?php printf($lang_common['Total query time'], $query_time_total.' s') ?></td>
</tr>
</tbody>
</table>
</div>
</div>
</div>
<?php
}
//
// Dump contents of variable(s)
//
function dump()
{
echo '<pre>';
$num_args = func_num_args();
for ($i = 0; $i < $num_args; ++$i)
{
print_r(func_get_arg($i));
echo "\n\n";
}
echo '</pre>';
exit;
}
?> |
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