Changeset 3 for branches/rsr.v5.1.dev/web/punbb/include/functions.php

Timestamp:

Nov 14, 2011, 11:17:15 PM (13 years ago)

Author:

dj3c1t

Message:

passage a Fluxbb 1.4.7

File:

• branches/rsr.v5.1.dev/web/punbb/include/functions.php (modified) (50 diffs)

branches/rsr.v5.1.dev/web/punbb/include/functions.php

@@ -1 +1 @@
 <?php
-/***********************************************************************
-
-  Copyright (C) 2002-2005  Rickard Andersson (rickard@punbb.org)
-
-  This file is part of PunBB.
-
-  PunBB is free software; you can redistribute it and/or modify it
-  under the terms of the GNU General Public License as published
-  by the Free Software Foundation; either version 2 of the License,
-  or (at your option) any later version.
-
-  PunBB is distributed in the hope that it will be useful, but
-  WITHOUT ANY WARRANTY; without even the implied warranty of
-  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
-  GNU General Public License for more details.
-
-  You should have received a copy of the GNU General Public License
-  along with this program; if not, write to the Free Software
-  Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-  MA  02111-1307  USA
-
-************************************************************************/
+
+/**
+ * Copyright (C) 2008-2011 FluxBB
+ * based on code by Rickard Andersson copyright (C) 2002-2008 PunBB
+ * License: http://www.gnu.org/licenses/gpl.html GPL version 2 or higher
+ */
+
+
+//
+// Return current timestamp (with microseconds) as a float
+//
+function get_microtime()
+{
+        list($usec, $sec) = explode(' ', microtime());
+        return ((float)$usec + (float)$sec);
+}
 
 //
@@ -28 +22 @@
 function check_cookie(&$pun_user)
 {
-        global $db, $pun_config, $cookie_name, $cookie_seed;
+        global $db, $db_type, $pun_config, $cookie_name, $cookie_seed;
 
         $now = time();
-        $expire = $now + 31536000;      // The cookie expires after a year
-
-        // We assume it's a guest
-        $cookie = array('user_id' => 1, 'password_hash' => 'Invité');
-
-        // If a cookie is set, we get the user_id and password hash from it
-        if (isset($_COOKIE[$cookie_name]))
-                list($cookie['user_id'], $cookie['password_hash']) = @unserialize($_COOKIE[$cookie_name]);
-
-        if ($cookie['user_id'] > 1)
-        {
+
+        // If the cookie is set and it matches the correct pattern, then read the values from it
+        if (isset($_COOKIE[$cookie_name]) && preg_match('%^(\d+)\|([0-9a-fA-F]+)\|(\d+)\|([0-9a-fA-F]+)$%', $_COOKIE[$cookie_name], $matches))
+        {
+                $cookie = array(
+                        'user_id'                       => intval($matches[1]),
+                        'password_hash'         => $matches[2],
+                        'expiration_time'       => intval($matches[3]),
+                        'cookie_hash'           => $matches[4],
+                );
+        }
+
+        // If it has a non-guest user, and hasn't expired
+        if (isset($cookie) && $cookie['user_id'] > 1 && $cookie['expiration_time'] > $now)
+        {
+                // If the cookie has been tampered with
+                if (forum_hmac($cookie['user_id'].'|'.$cookie['expiration_time'], $cookie_seed.'_cookie_hash') != $cookie['cookie_hash'])
+                {
+                        $expire = $now + 31536000; // The cookie expires after a year
+                        pun_setcookie(1, pun_hash(uniqid(rand(), true)), $expire);
+                        set_default_user();
+
+                        return;
+                }
+
                 // Check if there's a user with the user ID and password hash from the cookie
-        $_query = 'SELECT u.*, g.*, o.logged, o.idle FROM '.$db->prefix.'users AS u INNER JOIN '.$db->prefix.'groups AS g ON u.group_id=g.g_id LEFT JOIN '.$db->prefix.'online AS o ON o.user_id=u.id WHERE u.id='.intval($cookie['user_id']);
-                $result = $db->query($_query) or error('Impossible de retrouver les informations utilisateur', __FILE__, __LINE__, $db->error());
+                $result = $db->query('SELECT u.*, g.*, o.logged, o.idle FROM '.$db->prefix.'users AS u INNER JOIN '.$db->prefix.'groups AS g ON u.group_id=g.g_id LEFT JOIN '.$db->prefix.'online AS o ON o.user_id=u.id WHERE u.id='.intval($cookie['user_id'])) or error('Unable to fetch user information', __FILE__, __LINE__, $db->error());
                 $pun_user = $db->fetch_assoc($result);
 
                 // If user authorisation failed
-                if (!isset($pun_user['id']) || md5($cookie_seed.$pun_user['password']) !== $cookie['password_hash'])
-                {
-                        pun_setcookie(0, random_pass(8), $expire);
+                if (!isset($pun_user['id']) || forum_hmac($pun_user['password'], $cookie_seed.'_password_hash') !== $cookie['password_hash'])
+                {
+                        $expire = $now + 31536000; // The cookie expires after a year
+                        pun_setcookie(1, pun_hash(uniqid(rand(), true)), $expire);
                         set_default_user();
 
@@ -56 +64 @@
                 }
 
+                // Send a new, updated cookie with a new expiration timestamp
+                $expire = ($cookie['expiration_time'] > $now + $pun_config['o_timeout_visit']) ? $now + 1209600 : $now + $pun_config['o_timeout_visit'];
+                pun_setcookie($pun_user['id'], $pun_user['password'], $expire);
+
                 // Set a default language if the user selected language no longer exists
-                if (!$pun_user['language'] || !@file_exists(PUN_ROOT.'lang/'.$pun_user['language']))
+                if (!file_exists(PUN_ROOT.'lang/'.$pun_user['language']))
                         $pun_user['language'] = $pun_config['o_default_lang'];
 
                 // Set a default style if the user selected style no longer exists
-                if (!@file_exists(PUN_ROOT.'style/'.$pun_user['style'].'.css'))
+                if (!file_exists(PUN_ROOT.'style/'.$pun_user['style'].'.css'))
                         $pun_user['style'] = $pun_config['o_default_style'];
 
@@ -69 +81 @@
                         $pun_user['disp_posts'] = $pun_config['o_disp_posts_default'];
 
-                if ($pun_user['save_pass'] == '0')
-                        $expire = 0;
-
                 // Define this if you want this visit to affect the online list and the users last visit data
                 if (!defined('PUN_QUIET_VISIT'))
@@ -77 +86 @@
                         // Update the online list
                         if (!$pun_user['logged'])
-                                $db->query('INSERT INTO '.$db->prefix.'online (user_id, ident, logged) VALUES('.$pun_user['id'].', \''.$db->escape($pun_user['username']).'\', '.$now.')') or error('Impossbile d\'insérer dans la liste des utilisateurs en ligne', __FILE__, __LINE__, $db->error());
+                        {
+                                $pun_user['logged'] = $now;
+
+                                // With MySQL/MySQLi/SQLite, REPLACE INTO avoids a user having two rows in the online table
+                                switch ($db_type)
+                                {
+                                        case 'mysql':
+                                        case 'mysqli':
+                                        case 'mysql_innodb':
+                                        case 'mysqli_innodb':
+                                        case 'sqlite':
+                                                $db->query('REPLACE INTO '.$db->prefix.'online (user_id, ident, logged) VALUES('.$pun_user['id'].', \''.$db->escape($pun_user['username']).'\', '.$pun_user['logged'].')') or error('Unable to insert into online list', __FILE__, __LINE__, $db->error());
+                                                break;
+
+                                        default:
+                                                $db->query('INSERT INTO '.$db->prefix.'online (user_id, ident, logged) SELECT '.$pun_user['id'].', \''.$db->escape($pun_user['username']).'\', '.$pun_user['logged'].' WHERE NOT EXISTS (SELECT 1 FROM '.$db->prefix.'online WHERE user_id='.$pun_user['id'].')') or error('Unable to insert into online list', __FILE__, __LINE__, $db->error());
+                                                break;
+                                }
+
+                                // Reset tracked topics
+                                set_tracked_topics(null);
+                        }
                         else
                         {
@@ -83 +113 @@
                                 if ($pun_user['logged'] < ($now-$pun_config['o_timeout_visit']))
                                 {
-                                        $db->query('UPDATE '.$db->prefix.'users SET last_visit='.$pun_user['logged'].' WHERE id='.$pun_user['id']) or error('Impossible de mettre à jour les données de visite de l\'utilisateur', __FILE__, __LINE__, $db->error());
+                                        $db->query('UPDATE '.$db->prefix.'users SET last_visit='.$pun_user['logged'].' WHERE id='.$pun_user['id']) or error('Unable to update user visit data', __FILE__, __LINE__, $db->error());
                                         $pun_user['last_visit'] = $pun_user['logged'];
                                 }
 
                                 $idle_sql = ($pun_user['idle'] == '1') ? ', idle=0' : '';
-                                $db->query('UPDATE '.$db->prefix.'online SET logged='.$now.$idle_sql.' WHERE user_id='.$pun_user['id']) or error('Impossible de mettre à jour la liste des utilisateurs en ligne', __FILE__, __LINE__, $db->error());
+                                $db->query('UPDATE '.$db->prefix.'online SET logged='.$now.$idle_sql.' WHERE user_id='.$pun_user['id']) or error('Unable to update online list', __FILE__, __LINE__, $db->error());
+
+                                // Update tracked topics with the current expire time
+                                if (isset($_COOKIE[$cookie_name.'_track']))
+                                        forum_setcookie($cookie_name.'_track', $_COOKIE[$cookie_name.'_track'], $now + $pun_config['o_timeout_visit']);
                         }
                 }
+                else
+                {
+                        if (!$pun_user['logged'])
+                                $pun_user['logged'] = $pun_user['last_visit'];
+                }
 
                 $pun_user['is_guest'] = false;
+                $pun_user['is_admmod'] = $pun_user['g_id'] == PUN_ADMIN || $pun_user['g_moderator'] == '1';
         }
         else
@@ -100 +140 @@
 
 //
+// Converts the CDATA end sequence ]]> into ]]&gt;
+//
+function escape_cdata($str)
+{
+        return str_replace(']]>', ']]&gt;', $str);
+}
+
+
+//
+// Authenticates the provided username and password against the user database
+// $user can be either a user ID (integer) or a username (string)
+// $password can be either a plaintext password or a password hash including salt ($password_is_hash must be set accordingly)
+//
+function authenticate_user($user, $password, $password_is_hash = false)
+{
+        global $db, $pun_user;
+
+        // Check if there's a user matching $user and $password
+        $result = $db->query('SELECT u.*, g.*, o.logged, o.idle FROM '.$db->prefix.'users AS u INNER JOIN '.$db->prefix.'groups AS g ON g.g_id=u.group_id LEFT JOIN '.$db->prefix.'online AS o ON o.user_id=u.id WHERE '.(is_int($user) ? 'u.id='.intval($user) : 'u.username=\''.$db->escape($user).'\'')) or error('Unable to fetch user info', __FILE__, __LINE__, $db->error());
+        $pun_user = $db->fetch_assoc($result);
+
+        if (!isset($pun_user['id']) ||
+                ($password_is_hash && $password != $pun_user['password']) ||
+                (!$password_is_hash && pun_hash($password) != $pun_user['password']))
+                set_default_user();
+        else
+                $pun_user['is_guest'] = false;
+}
+
+
+//
+// Try to determine the current URL
+//
+function get_current_url($max_length = 0)
+{
+        $protocol = get_current_protocol();
+        $port = (isset($_SERVER['SERVER_PORT']) && (($_SERVER['SERVER_PORT'] != '80' && $protocol == 'http') || ($_SERVER['SERVER_PORT'] != '443' && $protocol == 'https')) && strpos($_SERVER['HTTP_HOST'], ':') === false) ? ':'.$_SERVER['SERVER_PORT'] : '';
+
+        $url = urldecode($protocol.'://'.$_SERVER['HTTP_HOST'].$port.$_SERVER['REQUEST_URI']);
+
+        if (strlen($url) <= $max_length || $max_length == 0)
+                return $url;
+
+        // We can't find a short enough url
+        return null;
+}
+
+
+//
+// Fetch the current protocol in use - http or https
+//
+function get_current_protocol()
+{
+        $protocol = 'http';
+
+        // Check if the server is claiming to using HTTPS
+        if (!empty($_SERVER['HTTPS']) && strtolower($_SERVER['HTTPS']) != 'off')
+                $protocol = 'https';
+
+        // If we are behind a reverse proxy try to decide which protocol it is using
+        if (defined('FORUM_BEHIND_REVERSE_PROXY'))
+        {
+                // Check if we are behind a Microsoft based reverse proxy
+                if (!empty($_SERVER['HTTP_FRONT_END_HTTPS']) && strtolower($_SERVER['HTTP_FRONT_END_HTTPS']) != 'off')
+                        $protocol = 'https';
+
+                // Check if we're behind a "proper" reverse proxy, and what protocol it's using
+                if (!empty($_SERVER['HTTP_X_FORWARDED_PROTO']))
+                        $protocol = strtolower($_SERVER['HTTP_X_FORWARDED_PROTO']);
+        }
+
+        return $protocol;
+}
+
+//
+// Fetch the base_url, optionally support HTTPS and HTTP
+//
+function get_base_url($support_https = false)
+{
+        global $pun_config;
+        static $base_url;
+
+        if (!$support_https)
+                return $pun_config['o_base_url'];
+
+        if (!isset($base_url))
+        {
+                // Make sure we are using the correct protocol
+                $base_url = str_replace(array('http://', 'https://'), get_current_protocol().'://', $pun_config['o_base_url']);
+        }
+
+        return $base_url;
+}
+
+
+//
 // Fill $pun_user with default values (for guests)
 //
 function set_default_user()
 {
-        global $db, $pun_user, $pun_config;
+        global $db, $db_type, $pun_user, $pun_config;
 
         $remote_addr = get_remote_address();
 
         // Fetch guest user
-        $result = $db->query('SELECT u.*, g.*, o.logged FROM '.$db->prefix.'users AS u INNER JOIN '.$db->prefix.'groups AS g ON u.group_id=g.g_id LEFT JOIN '.$db->prefix.'online AS o ON o.ident=\''.$remote_addr.'\' WHERE u.id=1') or error('Impossible de retrouver les informations d\'invité', __FILE__, __LINE__, $db->error());
+        $result = $db->query('SELECT u.*, g.*, o.logged, o.last_post, o.last_search FROM '.$db->prefix.'users AS u INNER JOIN '.$db->prefix.'groups AS g ON u.group_id=g.g_id LEFT JOIN '.$db->prefix.'online AS o ON o.ident=\''.$remote_addr.'\' WHERE u.id=1') or error('Unable to fetch guest information', __FILE__, __LINE__, $db->error());
         if (!$db->num_rows($result))
-                exit('Impossible de retrouver les informations invité. La table \''.$db->prefix.'users\' doit contenir une entrée avec un id = 1 qui représente les utilisateurs anonymes.');
+                exit('Unable to fetch guest information. Your database must contain both a guest user and a guest user group.');
 
         $pun_user = $db->fetch_assoc($result);
@@ -117 +253 @@
         // Update online list
         if (!$pun_user['logged'])
-                $db->query('INSERT INTO '.$db->prefix.'online (user_id, ident, logged) VALUES(1, \''.$db->escape($remote_addr).'\', '.time().')') or error('Impossbile d\'insérer dans la liste des utilisateurs en ligne', __FILE__, __LINE__, $db->error());
+        {
+                $pun_user['logged'] = time();
+
+                // With MySQL/MySQLi/SQLite, REPLACE INTO avoids a user having two rows in the online table
+                switch ($db_type)
+                {
+                        case 'mysql':
+                        case 'mysqli':
+                        case 'mysql_innodb':
+                        case 'mysqli_innodb':
+                        case 'sqlite':
+                                $db->query('REPLACE INTO '.$db->prefix.'online (user_id, ident, logged) VALUES(1, \''.$db->escape($remote_addr).'\', '.$pun_user['logged'].')') or error('Unable to insert into online list', __FILE__, __LINE__, $db->error());
+                                break;
+
+                        default:
+                                $db->query('INSERT INTO '.$db->prefix.'online (user_id, ident, logged) SELECT 1, \''.$db->escape($remote_addr).'\', '.$pun_user['logged'].' WHERE NOT EXISTS (SELECT 1 FROM '.$db->prefix.'online WHERE ident=\''.$db->escape($remote_addr).'\')') or error('Unable to insert into online list', __FILE__, __LINE__, $db->error());
+                                break;
+                }
+        }
         else
-                $db->query('UPDATE '.$db->prefix.'online SET logged='.time().' WHERE ident=\''.$db->escape($remote_addr).'\'') or error('Impossible de mettre à jour la liste des utilisateurs en ligne', __FILE__, __LINE__, $db->error());
+                $db->query('UPDATE '.$db->prefix.'online SET logged='.time().' WHERE ident=\''.$db->escape($remote_addr).'\'') or error('Unable to update online list', __FILE__, __LINE__, $db->error());
 
         $pun_user['disp_topics'] = $pun_config['o_disp_topics_default'];
         $pun_user['disp_posts'] = $pun_config['o_disp_posts_default'];
-        $pun_user['timezone'] = $pun_config['o_server_timezone'];
+        $pun_user['timezone'] = $pun_config['o_default_timezone'];
+        $pun_user['dst'] = $pun_config['o_default_dst'];
         $pun_user['language'] = $pun_config['o_default_lang'];
         $pun_user['style'] = $pun_config['o_default_style'];
         $pun_user['is_guest'] = true;
-
-}
-
-
-//
-// Set a cookie, PunBB style!
+        $pun_user['is_admmod'] = false;
+}
+
+
+//
+// SHA1 HMAC with PHP 4 fallback
+//
+function forum_hmac($data, $key, $raw_output = false)
+{
+        if (function_exists('hash_hmac'))
+                return hash_hmac('sha1', $data, $key, $raw_output);
+
+        // If key size more than blocksize then we hash it once
+        if (strlen($key) > 64)
+                $key = pack('H*', sha1($key)); // we have to use raw output here to match the standard
+
+        // Ensure we're padded to exactly one block boundary
+        $key = str_pad($key, 64, chr(0x00));
+
+        $hmac_opad = str_repeat(chr(0x5C), 64);
+        $hmac_ipad = str_repeat(chr(0x36), 64);
+
+        // Do inner and outer padding
+        for ($i = 0;$i < 64;$i++) {
+                $hmac_opad[$i] = $hmac_opad[$i] ^ $key[$i];
+                $hmac_ipad[$i] = $hmac_ipad[$i] ^ $key[$i];
+        }
+
+        // Finally, calculate the HMAC
+        $hash = sha1($hmac_opad.pack('H*', sha1($hmac_ipad.$data)));
+
+        // If we want raw output then we need to pack the final result
+        if ($raw_output)
+                $hash = pack('H*', $hash);
+
+        return $hash;
+}
+
+
+//
+// Set a cookie, FluxBB style!
+// Wrapper for forum_setcookie
 //
 function pun_setcookie($user_id, $password_hash, $expire)
 {
-        global $cookie_name, $cookie_path, $cookie_domain, $cookie_secure, $cookie_seed;
-
-        // Enable sending of a P3P header by removing // from the following line (try this if login is failing in IE6)
-//      @header('P3P: CP="CUR ADM"');
-
-        setcookie($cookie_name, serialize(array($user_id, md5($cookie_seed.$password_hash))), $expire, $cookie_path, $cookie_domain, $cookie_secure);
+        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);
 }
 
@@ -152 +357 @@
         global $db, $pun_config, $lang_common, $pun_user, $pun_bans;
 
-        // Admins aren't affected
-        if ($pun_user['g_id'] == PUN_ADMIN || !$pun_bans)
+        // Admins and moderators aren't affected
+        if ($pun_user['is_admmod'] || !$pun_bans)
                 return;
 
-        // Add a dot 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().'.';
+        // 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 $cur_ban)
@@ -165 +374 @@
                 if ($cur_ban['expire'] != '' && $cur_ban['expire'] <= time())
                 {
-                        $db->query('DELETE FROM '.$db->prefix.'bans WHERE id='.$cur_ban['id']) or error('Impossible de supprimé le bannissement expiré', __FILE__, __LINE__, $db->error());
+                        $db->query('DELETE FROM '.$db->prefix.'bans WHERE id='.$cur_ban['id']) or error('Unable to delete expired ban', __FILE__, __LINE__, $db->error());
                         $bans_altered = true;
                         continue;
                 }
 
-                if ($cur_ban['username'] != '' && !strcasecmp($pun_user['username'], $cur_ban['username']))
-                {
-                        $db->query('DELETE FROM '.$db->prefix.'online WHERE ident=\''.$db->escape($pun_user['username']).'\'') or error('Impossible de supprimer de la liste des utilisateur en ligne', __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'].'">'.$pun_config['o_admin_email'].'</a>.', true);
-                }
+                if ($cur_ban['username'] != '' && utf8_strtolower($pun_user['username']) == utf8_strtolower($cur_ban['username']))
+                        $is_banned = true;
 
                 if ($cur_ban['ip'] != '')
@@ -180 +386 @@
                         $cur_ban_ips = explode(' ', $cur_ban['ip']);
 
-                        for ($i = 0; $i < count($cur_ban_ips); ++$i)
+                        $num_ips = count($cur_ban_ips);
+                        for ($i = 0; $i < $num_ips; ++$i)
                         {
-                                $cur_ban_ips[$i] = $cur_ban_ips[$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])
                                 {
-                                        $db->query('DELETE FROM '.$db->prefix.'online WHERE ident=\''.$db->escape($pun_user['username']).'\'') or error('Impossible de supprimer de la liste des utilisateur en ligne', __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);
+                                        $is_banned = true;
+                                        break;
                                 }
                         }
                 }
+
+                if ($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);
+                }
         }
 
@@ -196 +413 @@
         if ($bans_altered)
         {
-                require_once PUN_ROOT.'include/cache.php';
+                if (!defined('FORUM_CACHE_FUNCTIONS_LOADED'))
+                        require PUN_ROOT.'include/cache.php';
+
                 generate_bans_cache();
         }
@@ -203 +422 @@
 
 //
+// 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, $pun_user;
+        global $db, $pun_config;
 
         $now = time();
 
         // Fetch all online list entries that are older than "o_timeout_online"
-        $result = $db->query('SELECT * FROM '.$db->prefix.'online WHERE logged<'.($now-$pun_config['o_timeout_online'])) or error('Impossible de retrouver les anciennes entrées de la liste des utilisateurs', __FILE__, __LINE__, $db->error());
+        $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('Impossible de supprimer de la liste des utilisateurs en ligne', __FILE__, __LINE__, $db->error());
+                        $db->query('DELETE FROM '.$db->prefix.'online WHERE ident=\''.$db->escape($cur_user['ident']).'\'') or error('Unable to delete from online list', __FILE__, __LINE__, $db->error());
                 else
                 {
@@ -223 +493 @@
                         if ($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('Impossible de mettre à jour les données de visite de l\'utilisateur', __FILE__, __LINE__, $db->error());
-                                $db->query('DELETE FROM '.$db->prefix.'online WHERE user_id='.$cur_user['user_id']) or error('Impossible de supprimer de la liste des utilisateurs en ligne', __FILE__, __LINE__, $db->error());
+                                $db->query('UPDATE '.$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('Impossible d\'insérer à la liste des utilisateurs en ligne', __FILE__, __LINE__, $db->error());
-                }
-        }
-}
-
-
-//
-// Generate the "navigator" that appears at the top of every page
-//
-function generate_navlinks()
-{
-        global $pun_config, $lang_common, $pun_user;
-
-        // Index and Userlist should always be displayed
-        $links[] = '<li id="navindex"><a href="index.php">'.$lang_common['Index'].'</a>';
-        $links[] = '<li id="navuserlist"><a href="userlist.php">'.$lang_common['User list'].'</a>';
-
-        if ($pun_config['o_rules'] == '1')
-                $links[] = '<li id="navrules"><a href="misc.php?action=rules">'.$lang_common['Rules'].'</a>';
-
-        if ($pun_user['is_guest'])
-        {
-                if ($pun_user['g_search'] == '1')
-                        $links[] = '<li id="navsearch"><a href="search.php">'.$lang_common['Search'].'</a>';
-
-                $links[] = '<li id="navregister"><a href="register.php">'.$lang_common['Register'].'</a>';
-                $links[] = '<li id="navlogin"><a href="login.php">'.$lang_common['Login'].'</a>';
-
-                $info = $lang_common['Not logged in'];
-        }
-        else
-        {
-                if ($pun_user['g_id'] > PUN_MOD)
-                {
-                        if ($pun_user['g_search'] == '1')
-                                $links[] = '<li id="navsearch"><a href="search.php">'.$lang_common['Search'].'</a>';
-
-                        $links[] = '<li id="navprofile"><a href="profile.php?id='.$pun_user['id'].'">'.$lang_common['Profile'].'</a>';
-                        $links[] = '<li id="navlogout"><a href="login.php?action=out&amp;id='.$pun_user['id'].'">'.$lang_common['Logout'].'</a>';
-                }
-                else
-                {
-                        $links[] = '<li id="navsearch"><a href="search.php">'.$lang_common['Search'].'</a>';
-                        $links[] = '<li id="navprofile"><a href="profile.php?id='.$pun_user['id'].'">'.$lang_common['Profile'].'</a>';
-                        $links[] = '<li id="navadmin"><a href="admin_index.php">'.$lang_common['Admin'].'</a>';
-                        $links[] = '<li id="navlogout"><a href="login.php?action=out&amp;id='.$pun_user['id'].'">'.$lang_common['Logout'].'</a>';
-                }
-        }
-
-        // Are there any additional navlinks we should insert into the array before imploding it?
-        if ($pun_config['o_additional_navlinks'] != '')
-        {
-                if (preg_match_all('#([0-9]+)\s*=\s*(.*?)\n#s', $pun_config['o_additional_navlinks']."\n", $extra_links))
-                {
-                        // Insert any additional links into the $links array (at the correct index)
-                        for ($i = 0; $i < count($extra_links[1]); ++$i)
-                                array_splice($links, $extra_links[1][$i], 0, array('<li id="navextra'.($i + 1).'">'.$extra_links[2][$i]));
-                }
-        }
-
-        return '<ul>'."\n\t\t\t\t".implode($lang_common['Link separator'].'</li>'."\n\t\t\t\t", $links).'</li>'."\n\t\t\t".'</ul>';
+                                $db->query('UPDATE '.$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());
+                }
+        }
 }
 
@@ -308 +520 @@
                                         <li<?php if ($page == 'personal') echo ' class="isactive"'; ?>><a href="profile.php?section=personal&amp;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&amp;id=<?php echo $id ?>"><?php echo $lang_profile['Section messaging'] ?></a></li>
-                                        <li<?php if ($page == 'personality') echo ' class="isactive"'; ?>><a href="profile.php?section=personality&amp;id=<?php echo $id ?>"><?php echo $lang_profile['Section personality'] ?></a></li>
-                                        <li<?php if ($page == 'display') echo ' class="isactive"'; ?>><a href="profile.php?section=display&amp;id=<?php echo $id ?>"><?php echo $lang_profile['Section display'] ?></a></li>
+<?php if ($pun_config['o_avatars'] == '1' || $pun_config['o_signatures'] == '1'): ?>                                    <li<?php if ($page == 'personality') echo ' class="isactive"'; ?>><a href="profile.php?section=personality&amp;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&amp;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&amp;id=<?php echo $id ?>"><?php echo $lang_profile['Section privacy'] ?></a></li>
-<?php if ($pun_user['g_id'] == PUN_ADMIN || ($pun_user['g_id'] == PUN_MOD && $pun_config['p_mod_ban_users'] == '1')): ?>                                        <li<?php if ($page == 'admin') echo ' class="isactive"'; ?>><a href="profile.php?section=admin&amp;id=<?php echo $id ?>"><?php echo $lang_profile['Section admin'] ?></a></li>
+<?php if ($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&amp;id=<?php echo $id ?>"><?php echo $lang_profile['Section admin'] ?></a></li>
 <?php endif; ?>                         </ul>
                         </div>
@@ -322 +534 @@
 
 //
-// Update posts, topics, last_post, last_post_id and last_poster for a forum (redirect topics are not included)
+// 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 ($p != null)
+                $page_title[0] .= ' ('.sprintf($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) > 4048)
+                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)
@@ -328 +646 @@
         global $db;
 
-        $result = $db->query('SELECT COUNT(id), SUM(num_replies) FROM '.$db->prefix.'topics WHERE moved_to IS NULL AND forum_id='.$forum_id) or error('Impossible de retrouver le total de discussions du forum', __FILE__, __LINE__, $db->error());
+        $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('Impossible de retrouver last_post/last_post_id/last_poster', __FILE__, __LINE__, $db->error());
-        if ($db->num_rows($result))             // There are topics in the forum
+        $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('Impossible de mettre à jour 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=0, num_posts=0, last_post=NULL, last_post_id=NULL, last_poster=NULL WHERE id='.$forum_id) or error('Impossible de mettre à jour last_post/last_post_id/last_poster', __FILE__, __LINE__, $db->error());
+                $db->query('UPDATE '.$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);
+        }
 }
 
@@ -353 +689 @@
 
         // 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('Impossible de supprimer le sujet', __FILE__, __LINE__, $db->error());
-
-        // Create a list of the post ID's in this topic
+        $db->query('DELETE FROM '.$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('Impossible de retrouver les messages', __FILE__, __LINE__, $db->error());
+        $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 ID's
+        // Make sure we have a list of post IDs
         if ($post_ids != '')
         {
@@ -367 +703 @@
 
                 // Delete posts in topic
-                $db->query('DELETE FROM '.$db->prefix.'posts WHERE topic_id='.$topic_id) or error('Impossible de supprimer les messages', __FILE__, __LINE__, $db->error());
+                $db->query('DELETE FROM '.$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.'subscriptions WHERE topic_id='.$topic_id) or error('Impossible de supprimer l\'abonnement', __FILE__, __LINE__, $db->error());
+        $db->query('DELETE FROM '.$db->prefix.'topic_subscriptions WHERE topic_id='.$topic_id) or error('Unable to delete subscriptions', __FILE__, __LINE__, $db->error());
 }
 
@@ -382 +718 @@
         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('Impossible de retrouver les informations du message', __FILE__, __LINE__, $db->error());
+        $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('Impossible de supprimer le message', __FILE__, __LINE__, $db->error());
+        $db->query('DELETE FROM '.$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('Impossible de retrouver le total de messages pour la discussion', __FILE__, __LINE__, $db->error());
+        $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;
 
@@ -400 +736 @@
                 // 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('Impossible de mettre à jour la discussion', __FILE__, __LINE__, $db->error());
+                        $db->query('UPDATE '.$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('Impossible de mettre à jour la discussion', __FILE__, __LINE__, $db->error());
+                        $db->query('UPDATE '.$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('Impossible de mettre à jour la discussion', __FILE__, __LINE__, $db->error());
+                $db->query('UPDATE '.$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();
 }
 
@@ -422 +773 @@
         if (!isset($search_for))
         {
-                $result = $db->query('SELECT search_for, replace_with FROM '.$db->prefix.'censoring') or error('Impossible de retrouver la liste des mots à censurer', __FILE__, __LINE__, $db->error());
-                $num_words = $db->num_rows($result);
-
-                $search_for = array();
-                for ($i = 0; $i < $num_words; ++$i)
-                {
-                        list($search_for[$i], $replace_with[$i]) = $db->fetch_row($result);
-                        $search_for[$i] = '/\b('.str_replace('\*', '\w*?', preg_quote($search_for[$i], '/')).')\b/i';
+                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))
-                $text = substr(preg_replace($search_for, $replace_with, ' '.$text.' '), 1, -1);
+                $text = substr(ucp_preg_replace($search_for, $replace_with, ' '.$text.' '), 1, -1);
 
         return $text;
@@ -459 +812 @@
 
         // If not already loaded in a previous call, load the cached ranks
-        if ($pun_config['o_ranks'] == '1' && empty($pun_ranks))
-        {
-                @include PUN_ROOT.'cache/cache_ranks.php';
+        if ($pun_config['o_ranks'] == '1' && !defined('PUN_RANKS_LOADED'))
+        {
+                if (file_exists(FORUM_CACHE_DIR.'cache_ranks.php'))
+                        include FORUM_CACHE_DIR.'cache_ranks.php';
+
                 if (!defined('PUN_RANKS_LOADED'))
                 {
-                        require_once PUN_ROOT.'include/cache.php';
+                        if (!defined('FORUM_CACHE_FUNCTIONS_LOADED'))
+                                require PUN_ROOT.'include/cache.php';
+
                         generate_ranks_cache();
-                        require PUN_ROOT.'cache/cache_ranks.php';
+                        require FORUM_CACHE_DIR.'cache_ranks.php';
                 }
         }
@@ -487 +844 @@
                 if ($pun_config['o_ranks'] == '1' && !empty($pun_ranks))
                 {
-                        @reset($pun_ranks);
-                        while (list(, $cur_rank) = @each($pun_ranks))
+                        foreach ($pun_ranks as $cur_rank)
                         {
-                                if (intval($user['num_posts']) >= $cur_rank['min_posts'])
+                                if ($user['num_posts'] >= $cur_rank['min_posts'])
                                         $user_title = pun_htmlspecialchars($cur_rank['rank']);
                         }
@@ -507 +863 @@
 // Generate a string with numbered links (for multipage scripts)
 //
-function paginate($num_pages, $cur_page, $link_to)
-{
+function paginate($num_pages, $cur_page, $link)
+{
+        global $lang_common;
+
         $pages = array();
         $link_to_all = false;
@@ -520 +878 @@
 
         if ($num_pages <= 1)
-                $pages = array('<strong>1</strong>');
+                $pages = array('<strong class="item1">1</strong>');
         else
         {
+                // Add a previous page link
+                if ($num_pages > 1 && $cur_page > 1)
+                        $pages[] = '<a'.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&amp;p='.($cur_page - 1).'">'.$lang_common['Previous'].'</a>';
+
                 if ($cur_page > 3)
                 {
-                        $pages[] = '<a href="'.$link_to.'&amp;p=1">1</a>';
-
-                        if ($cur_page != 4)
-                                $pages[] = '&hellip;';
+                        $pages[] = '<a'.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&amp;p=1">1</a>';
+
+                        if ($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 - 2, $stop = $cur_page + 3; $current < $stop; ++$current)
+                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)
-                                $pages[] = '<a href="'.$link_to.'&amp;p='.$current.'">'.$current.'</a>';
+                                $pages[] = '<a'.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&amp;p='.$current.'">'.forum_number_format($current).'</a>';
                         else
-                                $pages[] = '<strong>'.$current.'</strong>';
+                                $pages[] = '<strong'.(empty($pages) ? ' class="item1"' : '').'>'.forum_number_format($current).'</strong>';
                 }
 
                 if ($cur_page <= ($num_pages-3))
                 {
-                        if ($cur_page != ($num_pages-3))
-                                $pages[] = '&hellip;';
-
-                        $pages[] = '<a href="'.$link_to.'&amp;p='.$num_pages.'">'.$num_pages.'</a>';
-                }
-        }
-
-        return implode('&#160;', $pages);
+                        if ($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="'.$link.'&amp;p='.$num_pages.'">'.forum_number_format($num_pages).'</a>';
+                }
+
+                // Add a next page link
+                if ($num_pages > 1 && !$link_to_all && $cur_page < $num_pages)
+                        $pages[] = '<a'.(empty($pages) ? ' class="item1"' : '').' href="'.$link.'&amp;p='.($cur_page +1).'">'.$lang_common['Next'].'</a>';
+        }
+
+        return implode(' ', $pages);
 }
 
@@ -560 +926 @@
 function message($message, $no_back_link = false)
 {
-
-        global $db, $lang_common, $pun_config, $pun_start, $tpl_main, $env;
+        global $db, $lang_common, $pun_config, $pun_start, $tpl_main, $pun_user;
 
         if (!defined('PUN_HEADER'))
         {
-                global $pun_user;
-
-                $page_title = pun_htmlspecialchars($pun_config['o_board_title']).' / '.$lang_common['Info'];
+                $page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), $lang_common['Info']);
+                define('PUN_ACTIVE_PAGE', 'index');
                 require PUN_ROOT.'header.php';
         }
@@ -577 +941 @@
         <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>
+                        <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>
@@ -589 +953 @@
 
 //
-// Format a time string according to $time_format and timezones
-//
-function format_time($timestamp, $date_only = false)
-{
-        global $pun_config, $lang_common, $pun_user;
+// 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_config['o_server_timezone']) * 3600;
+        $diff = ($pun_user['timezone'] + $pun_user['dst']) * 3600;
         $timestamp += $diff;
         $now = time();
 
-        $date = date($pun_config['o_date_format'], $timestamp);
-        $today = date($pun_config['o_date_format'], $now+$diff);
-        $yesterday = date($pun_config['o_date_format'], $now+$diff-86400);
-
-        if ($date == $today)
-                $date = $lang_common['Today'];
-        else if ($date == $yesterday)
-                $date = $lang_common['Yesterday'];
-
-        if (!$date_only)
-                return $date.' '.date($pun_config['o_time_format'], $timestamp);
+        if($date_format == null)
+                $date_format = $forum_date_formats[$pun_user['date_format']];
+
+        if($time_format == null)
+                $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 $date;
-}
-
-
-//
-// If we are running pre PHP 4.3.0, we add our own implementation of file_get_contents
-//
-if (!function_exists('file_get_contents'))
-{
-        function file_get_contents($filename, $use_include_path = 0)
-        {
-                $data = '';
-
-                if ($fh = fopen($filename, 'rb', $use_include_path))
-                {
-                        $data = fread($fh, filesize($filename));
-                        fclose($fh);
-                }
-
-                return $data;
-        }
-}
-
-
-//
-// Make sure that HTTP_REFERER matches $pun_config['o_base_url']/$script
-//
-function confirm_referrer($script)
+                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;
 
-        if (!preg_match('#^'.preg_quote(str_replace('www.', '', $pun_config['o_base_url']).'/'.$script, '#').'#i', str_replace('www.', '', (isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : ''))))
-                message($lang_common['Bad referrer']);
+        // 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']);
 }
 
@@ -652 +1059 @@
 //
 // Generate a random password of length $len
+// Compatibility wrapper for random_key
 //
 function random_pass($len)
 {
-        $chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789';
-
-        $password = '';
-        for ($i = 0; $i < $len; ++$i)
-                $password .= substr($chars, (mt_rand() % strlen($chars)), 1);
-
-        return $password;
+        return random_key($len, true);
 }
 
@@ -667 +1069 @@
 //
 // Compute a hash of $str
-// Uses sha1() if available. If not, SHA1 through mhash() if available. If not, fall back on md5().
 //
 function pun_hash($str)
 {
-        if (function_exists('sha1'))    // Only in PHP 4.3.0+
-                return sha1($str);
-        else if (function_exists('mhash'))      // Only if Mhash library is loaded
-                return bin2hex(mhash(MHASH_SHA1, $str));
-        else
-                return md5($str);
+        return sha1($str);
 }
 
@@ -685 +1081 @@
 function get_remote_address()
 {
-        return $_SERVER['REMOTE_ADDR'];
-}
-
-
-//
-// Equivalent to htmlspecialchars(), but allows &#[0-9]+ (for unicode)
+        $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)
 {
-        $str = preg_replace('/&(?!#[0-9]+;)/s', '&amp;', $str);
-        $str = str_replace(array('<', '>', '"'), array('&lt;', '&gt;', '&quot;'), $str);
-
-        return $str;
-}
-
-
-//
-// Equivalent to strlen(), but counts &#[0-9]+ as one character (for unicode)
+        return htmlspecialchars($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['&#039;'] = '\''; // get_html_translation_table doesn't include &#039; 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 strlen(preg_replace('/&#([0-9]+);/', '!', $str));
+        return utf8_strlen($str);
 }
 
@@ -720 +1152 @@
 
 //
-// A more aggressive version of trim()
-//
-function pun_trim($str)
-{
-        global $lang_common;
-
-        if (strpos($lang_common['lang_encoding'], '8859') !== false)
-        {
-                $fishy_chars = array(chr(0x81), chr(0x8D), chr(0x8F), chr(0x90), chr(0x9D), chr(0xA0));
-                return trim(str_replace($fishy_chars, ' ', $str));
-        }
-        else
-                return trim($str);
+// A wrapper for utf8_trim for compatibility
+//
+function pun_trim($str, $charlist = false)
+{
+        return utf8_trim($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, $key = null)
+{
+        if ($key == null)
+                $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));
 }
 
@@ -742 +1199 @@
 {
         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
@@ -748 +1214 @@
         $message = str_replace($pattern, $replace, $pun_config['o_maintenance_message']);
 
-
-        // Load the maintenance template
-        $tpl_maint = trim(file_get_contents(PUN_ROOT.'include/template/maintenance.tpl'));
+        if (file_exists(PUN_ROOT.'style/'.$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>
 
 
@@ -758 +1259 @@
 
 
-        // START SUBST - <pun_char_encoding>
-        $tpl_maint = str_replace('<pun_char_encoding>', $lang_common['lang_encoding'], $tpl_maint);
-        // END SUBST - <pun_char_encoding>
-
-
         // START SUBST - <pun_head>
         ob_start();
 
+        $page_title = array(pun_htmlspecialchars($pun_config['o_board_title']), $lang_common['Maintenance']);
+
 ?>
-<title><?php echo pun_htmlspecialchars($pun_config['o_board_title']).' / '.$lang_common['Maintenance'] ?></title>
+<title><?php echo generate_page_title($page_title) ?></title>
 <link rel="stylesheet" type="text/css" href="style/<?php echo $pun_user['style'].'.css' ?>" />
 <?php
@@ -777 +1275 @@
 
 
-        // START SUBST - <pun_maint_heading>
-        $tpl_maint = str_replace('<pun_maint_heading>', $lang_common['Maintenance'], $tpl_maint);
-        // END SUBST - <pun_maint_heading>
-
-
-        // START SUBST - <pun_maint_message>
-        $tpl_maint = str_replace('<pun_maint_message>', $message, $tpl_maint);
-        // END SUBST - <pun_maint_message>
+        // 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>
 
 
@@ -791 +1299 @@
 
 
-        // START SUBST - <pun_include "*">
-        while (preg_match('#<pun_include "([^/\\\\]*?)">#', $tpl_maint, $cur_include))
-        {
-                if (!file_exists(PUN_ROOT.'include/user/'.$cur_include[1]))
-                   error('Impossible de procéder à l\'inclusion utilisateur &lt;pun_include "'.htmlspecialchars($cur_include[1]).'"&gt; depuis le template main.tpl. Il n\'y a pas de fichier dans le répertoire /include/user/');
-
-                ob_start();
-                include PUN_ROOT.'include/user/'.$cur_include[1];
-                $tpl_temp = ob_get_contents();
-                $tpl_redir = str_replace($cur_include[0], $tpl_temp, $tpl_redir);
-            ob_end_clean();
-        }
-        // END SUBST - <pun_include "*">
-
-
         // Close the db connection (and free up any result data)
         $db->close();
@@ -820 +1313 @@
         global $db, $pun_config, $lang_common, $pun_user;
 
-        if ($destination_url == '')
-                $destination_url = 'index.php';
+        // Prefix with base_url (unless there's already a valid URI)
+        if (strpos($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
@@ -827 +1324 @@
                 header('Location: '.str_replace('&amp;', '&', $destination_url));
 
-
-        // Load the redirect template
-        $tpl_redir = trim(file_get_contents(PUN_ROOT.'include/template/redirect.tpl'));
+        // Send no-cache headers
+        header('Expires: Thu, 21 Jul 1977 07:30:00 GMT'); // When yours truly first set eyes on this world! :)
+        header('Last-Modified: '.gmdate('D, d M Y H:i:s').' GMT');
+        header('Cache-Control: post-check=0, pre-check=0', false);
+        header('Pragma: no-cache'); // For HTTP/1.0 compatibility
+
+        // Send the Content-type header in case the web server is setup to send something else
+        header('Content-type: text/html; charset=utf-8');
+
+        if (file_exists(PUN_ROOT.'style/'.$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>
 
 
@@ -837 +1378 @@
 
 
-        // START SUBST - <pun_char_encoding>
-        $tpl_redir = str_replace('<pun_char_encoding>', $lang_common['lang_encoding'], $tpl_redir);
-        // END SUBST - <pun_char_encoding>
-
-
         // 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('&lt;', '&gt;', '&quot;'), $destination_url) ?>" />
-<title><?php echo pun_htmlspecialchars($pun_config['o_board_title']).' / '.$lang_common['Redirecting'] ?></title>
+<title><?php echo generate_page_title($page_title) ?></title>
 <link rel="stylesheet" type="text/css" href="style/<?php echo $pun_user['style'].'.css' ?>" />
 <?php
@@ -857 +1395 @@
 
 
-        // START SUBST - <pun_redir_heading>
-        $tpl_redir = str_replace('<pun_redir_heading>', $lang_common['Redirecting'], $tpl_redir);
-        // END SUBST - <pun_redir_heading>
-
-
-        // START SUBST - <pun_redir_text>
-        $tpl_temp = $message.'<br /><br />'.'<a href="'.$destination_url.'">'.$lang_common['Click redirect'].'</a>';
-        $tpl_redir = str_replace('<pun_redir_text>', $tpl_temp, $tpl_redir);
-        // END SUBST - <pun_redir_text>
+        // 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>
 
 
@@ -884 +1431 @@
 
 
-        // START SUBST - <pun_include "*">
-        while (preg_match('<pun_include "(.*?)">', $tpl_redir, $cur_include))
-        {
-                ob_start();
-                include PUN_ROOT.$cur_include[1];
-                $tpl_temp = ob_get_contents();
-                $tpl_redir = str_replace('<'.$cur_include[0].'>', $tpl_temp, $tpl_redir);
-            ob_end_clean();
-        }
-        // END SUBST - <pun_include "*">
-
-
         // Close the db connection (and free up any result data)
         $db->close();
@@ -906 +1441 @@
 // Display a simple error message
 //
-function error($message, $file, $line, $db_error = false)
-{
-        global $pun_config;
-
-        // Set a default title if the script failed before $pun_config could be populated
+function error($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['o_board_title'] = 'PunBB';
-
-        // Empty output buffer and stop buffering
-        @ob_end_clean();
+        {
+                $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 (!empty($pun_config['o_gzip']) && extension_loaded('zlib') && (strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'gzip') !== false || strpos($_SERVER['HTTP_ACCEPT_ENCODING'], 'deflate') !== false))
+        if ($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 dir="ltr">
+<html xmlns="http://www.w3.org/1999/xhtml" dir="ltr">
 <head>
-<meta http-equiv="Content-Type" content="text/html; charset=<?php echo $lang_common["lang_encoding"] ?>" />
-<title><?php echo pun_htmlspecialchars($pun_config['o_board_title']) ?> / Error</title>
+<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">
 <!--
@@ -939 +1498 @@
 
 <div id="errorbox">
-        <h2>Une erreur s'est produite</h2>
+        <h2>An error was encountered</h2>
         <div>
 <?php
 
-        if (defined('PUN_DEBUG'))
-        {
-                echo "\t\t".'<strong>Fichier :</strong> '.$file.'<br />'."\n\t\t".'<strong>Ligne :</strong> '.$line.'<br /><br />'."\n\t\t".'<strong>PunBB a rapporté :</strong> '.$message."\n";
+        if (defined('PUN_DEBUG') && $file !== null && $line !== null)
+        {
+                echo "\t\t".'<strong>File:</strong> '.$file.'<br />'."\n\t\t".'<strong>Line:</strong> '.$line.'<br /><br />'."\n\t\t".'<strong>FluxBB reported</strong>: '.$message."\n";
 
                 if ($db_error)
                 {
-                        echo "\t\t".'<br /><br /><strong>La base de données a rapporté :</strong> '.pun_htmlspecialchars($db_error['error_msg']).(($db_error['error_no']) ? ' (Errno: '.$db_error['error_no'].')' : '')."\n";
+                        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 ($db_error['error_sql'] != '')
-                                echo "\t\t".'<br /><br /><strong>Requête échouée :</strong> '.pun_htmlspecialchars($db_error['error_sql'])."\n";
+                                echo "\t\t".'<br /><br /><strong>Failed query:</strong> '.pun_htmlspecialchars($db_error['error_sql'])."\n";
                 }
         }
         else
-                echo "\t\t".'Erreur : <strong>'.$message.'.</strong>'."\n";
+                echo "\t\t".'Error: <strong>'.$message.'.</strong>'."\n";
 
 ?>
@@ -971 +1530 @@
 
         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('%[\x{00}-\x{08}\x{0b}-\x{0c}\x{0e}-\x{1f}]%', '', $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, $end, &$errors, $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, $end, &$errors = array(), $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;
 }
 
@@ -994 +1994 @@
                         <thead>
                                 <tr>
-                                        <th class="tcl" scope="col">Temps (s)</th>
-                                        <th class="tcr" scope="col">Requête</th>
+                                        <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>
@@ -1002 +2002 @@
 
         $query_time_total = 0.0;
-        while (list(, $cur_query) = @each($saved_queries))
+        foreach ($saved_queries as $cur_query)
         {
                 $query_time_total += $cur_query[1];
@@ -1017 +2017 @@
 ?>
                                 <tr>
-                                        <td class="tcl" colspan="2">Temps total requête : <?php echo $query_time_total ?> s</td>
+                                        <td class="tcl" colspan="2"><?php printf($lang_common['Total query time'], $query_time_total.' s') ?></td>
                                 </tr>
                         </tbody>
@@ -1030 +2030 @@
 
 //
-// Unset any variables instantiated as a result of register_globals being enabled
-//
-function unregister_globals()
-{
-        // 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]);
-        }
-}
-
-
-//
 // Dump contents of variable(s)
 //