<h2>Editing File: /var/softaculous/fud/pdf.php</h2><form method='post'><textarea name='content' class='file-edit'>&lt;?php
/**
* copyright            : (C) 2001-2022 Advanced Internet Designs Inc.
* email                : forum@prohost.org
* $Id$
*
* This program 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; version 2 of the License.
**/

require('./GLOBALS.php');
fud_use('err.inc');
fud_use('fpdf.inc', true);

class fud_pdf extends FPDF
{
	var $outlines = array();
	var $OutlineRoot;

	/** Override Cell() function to render special characters (FPDF doesn't support UTF-8).
	 *  Details at http://fudforum.org/forum/index.php?t=msg&amp;goto=167344
	 */
	function Cell($w, $h=0, $txt='', $border=0, $ln=0, $align='', $fill=false, $link='')
	{
		if (extension_loaded('iconv')) {
			$txt = iconv('utf-8', 'cp1252', $txt);
		}
		parent::Cell($w, $h, $txt, $border, $ln, $align, $fill, $link);
	}

	function begin_page($title)
	{
		$this-&gt;AddPage();
		$this-&gt;Bookmark($title);
	}

	function input_text($text)
	{
		$this-&gt;SetFont('helvetica', '', 12);
		$this-&gt;Write(5, $text);
		$this-&gt;Ln(5);
	}

	function draw_line()
	{
		$this-&gt;Line($this-&gt;lMargin, $this-&gt;y, ($this-&gt;w - $this-&gt;rMargin), $this-&gt;y);
	}

	function add_link($url, $caption=0)
	{
		$this-&gt;SetTextColor(0,0,255);
		$this-&gt;Write(5, $caption ? $caption : $url, $url);
		$this-&gt;SetTextColor(0);
	}

	function add_attacments($attch, $private=0)
	{
		$this-&gt;Ln(5);
		$this-&gt;SetFont('courier', '', 16);
		$this-&gt;Write(5, 'File Attachments');
		$this-&gt;Ln(5);
	
		$this-&gt;draw_line();

		$this-&gt;SetFont('', '', 14);

		$i = 0;
		foreach ($attch as $a) {
			$this-&gt;Write(5, ++$i .') ');
			$this-&gt;add_link($GLOBALS['WWW_ROOT'] .'index.php?t=getfile&amp;id='. $a['id'] . ($private ? '&amp;private=1' : ''), $a['name']);
			$this-&gt;Write(5, ', downloaded '. $a['nd'] .' times');

			// GIF, PNG and JPG images can be embedded.
			if (extension_loaded('gd') &amp;&amp; preg_match('/\.gif$/i', $a['name'])) {
				$this-&gt;Ln(5);
				$this-&gt;Image($GLOBALS['WWW_ROOT'] .'index.php?t=getfile&amp;id='. $a['id'] . ($private ? '&amp;private=1' : ''), null, null, 0, 0, 'GIF');
			} elseif (preg_match('/\.png$/i', $a['name'])) {
				$this-&gt;Ln(5);
				$this-&gt;Image($GLOBALS['WWW_ROOT'] .'index.php?t=getfile&amp;id='. $a['id'] . ($private ? '&amp;private=1' : ''), null, null, 0, 0, 'PNG');
			} elseif (preg_match('/\.(jpg|jpeg)$/i', $a['name'])) {
				$this-&gt;Ln(5);
				$this-&gt;Image($GLOBALS['WWW_ROOT'] .'index.php?t=getfile&amp;id='. $a['id'] . ($private ? '&amp;private=1' : ''), null, null, 0, 0, 'JPEG');
			}

			$this-&gt;Ln(5);
		}
	}

	function add_poll($name, $opts, $ttl_votes)
	{
		$this-&gt;Ln(6);
		$this-&gt;SetFont('courier', '', 16);
		$this-&gt;Write(5, $name);
		$this-&gt;SetFont('', '', 14);
		$this-&gt;Write(5, '(total votes: '. $ttl_votes .')');
		$this-&gt;Ln(6);
		$this-&gt;draw_line();
		$this-&gt;Ln(5);

		$p1 = ($this-&gt;w - $this-&gt;rMargin - $this-&gt;lMargin) * 0.6 / 100;

		// Avoid /0 warnings and safe to do, since we'd be multiplying 0 since there are no votes,
		if (!$ttl_votes) {
			$ttl_votes = 1;
		}

		$this-&gt;SetFont('helvetica', '', 14);

		foreach ($opts as $o) {
			$this-&gt;SetFillColor(52, 146, 40);
			$this-&gt;Cell((!$o['votes'] ? 1 : $p1 * (($o['votes'] / $ttl_votes) * 100)), 5, $o['name'] .&quot;\t\t&quot;. $o['votes'] .'/('.round(($o['votes'] / $ttl_votes) * 100).'%)', 1, 0, '', 1);
			$this-&gt;Ln(5);
		}
		$this-&gt;SetFillColor();
	}

	function message_header($subject, $author, $date, $id, $th)
	{
		$this-&gt;Rect($this-&gt;lMargin, $this-&gt;y, (int)($this-&gt;w - $this-&gt;lMargin - $this-&gt;lMargin), 1, 'F');
		$this-&gt;Ln(2);

		$this-&gt;SetFont('helvetica', '', 14);
		$this-&gt;Bookmark($subject, 1);
		$this-&gt;Write(5, 'Subject: '. $subject);
		$this-&gt;Ln(5);
		
		$this-&gt;Write(5, 'Posted by ');
		$this-&gt;add_link($GLOBALS['WWW_ROOT'] .'index.php?t=usrinfo&amp;id='. $author[0], $author[1]);
		$this-&gt;Write(5, ' on '. gmdate('D, d M Y H:i:s \G\M\T', $date));
		if ($th) {
			$this-&gt;SetFont('helvetica', '', 10);
			$this-&gt;Ln(5);
			$this-&gt;add_link($GLOBALS['WWW_ROOT'] .'index.php?t=rview&amp;th='. $th .'&amp;goto='. $id .'#msg_'. $id, 'View Forum Message');
			$this-&gt;Write(5, ' &lt;&gt; ');
			$this-&gt;add_link($GLOBALS['WWW_ROOT'] .'index.php?t=post&amp;reply_to='. $id, 'Reply to Message');
		}
		$this-&gt;Ln(5);
		$this-&gt;draw_line();
		$this-&gt;Ln(3);
	}

	function end_message()
	{
		$this-&gt;Ln(3);
		$this-&gt;Rect($this-&gt;lMargin, $this-&gt;y, (int)($this-&gt;w - $this-&gt;lMargin - $this-&gt;lMargin), 1, 'F');
		$this-&gt;Ln(10);
	}

	function header()
	{

	}
	
	function footer()
	{
		$this-&gt;SetFont('courier', '', 8);
		$this-&gt;Ln(10);
		$this-&gt;draw_line();
		$this-&gt;Write(5, 'Page '. $this-&gt;page .' of {fnb} ---- Generated from ');
		$this-&gt;add_link($GLOBALS['WWW_ROOT'] .'index.php', $GLOBALS['FORUM_TITLE']);
		// $this-&gt;Write(5, ' by FUDforum '. $GLOBALS['FORUM_VERSION']);
	}

	function Bookmark($txt, $level=0)
	{
		$this-&gt;outlines[] = array('t' =&gt; $txt, 'l' =&gt; $level, 'y' =&gt; $this-&gt;y, 'p' =&gt; $this-&gt;page);
	}

	function _putbookmarks()
	{
		if (empty($this-&gt;outlines)) {
			return;
		}

		$nb = count($this-&gt;outlines);

		$lru = array();
		$level = 0;
		foreach ($this-&gt;outlines as $i =&gt; $o) {
			if($o['l'] &gt; 0) {
				$parent = $lru[$o['l']-1];
				// Set parent and last pointers.
				$this-&gt;outlines[$i]['parent'] = $parent;
				$this-&gt;outlines[$parent]['last'] = $i;
				if ($o['l'] &gt; $level) {
					// Level increasing: set first pointer.
					$this-&gt;outlines[$parent]['first'] = $i;
				}
			} else {
				$this-&gt;outlines[$i]['parent'] = $nb;
			}

			if($o['l'] &lt;= $level &amp;&amp; $i &gt; 0) {
				// Set prev and next pointers.
				$prev = $lru[$o['l']];
				$this-&gt;outlines[$prev]['next'] = $i;
				$this-&gt;outlines[$i]['prev'] = $prev;
			}
			$lru[$o['l']] = $i;
			$level = $o['l'];
		}

		// Outline items.
		$n = $this-&gt;n + 1;
		foreach($this-&gt;outlines as $i =&gt; $o) {
			$this-&gt;_newobj();
			$this-&gt;_out('&lt;&lt;/Title '. $this-&gt;_textstring($o['t']));
			$this-&gt;_out('/Parent '. ($n+$o['parent']).' 0 R');
			if(isset($o['prev']))
				$this-&gt;_out('/Prev '. ($n+$o['prev']).' 0 R');
			if(isset($o['next']))
				$this-&gt;_out('/Next '. ($n+$o['next']).' 0 R');
			if(isset($o['first']))
				$this-&gt;_out('/First '. ($n+$o['first']).' 0 R');
			if(isset($o['last']))
				$this-&gt;_out('/Last '. ($n+$o['last']).' 0 R');
			$this-&gt;_out(sprintf('/Dest [%d 0 R /XYZ 0 %.2f null]', 1+2*$o['p'], ($this-&gt;h-$o['y'])*$this-&gt;k));
			$this-&gt;_out('/Count 0&gt;&gt;');
			$this-&gt;_out('endobj');
		}

		// Outline root.
		$this-&gt;_newobj();
		$this-&gt;OutlineRoot = $this-&gt;n;
		$this-&gt;_out('&lt;&lt;/Type /Outlines /First '. $n .' 0 R');
		$this-&gt;_out('/Last '. ($n+$lru[0]) .' 0 R&gt;&gt;');
		$this-&gt;_out('endobj');
	}
}

/* main */
	/* Before we go on, we need to do some very basic activation checks. */
	if (!($FUD_OPT_1 &amp; 1)) {	// FORUM_ENABLED
		fud_use('errmsg.inc');
		exit_forum_disabled();
	}

	/* This potentially can be a longer form to generate. */
	@set_time_limit($PDF_MAX_CPU);

# define('fud_query_stats', 1);

class db { public static $db, $slave; }

if (empty(db::$db)) {

	// Use MYSQLI_REPORT_OFF so we can check error codes manually.
	$driver = new mysqli_driver();
	$driver-&gt;report_mode = MYSQLI_REPORT_OFF;

	if (substr($GLOBALS['DBHOST'], 0, 1) == ':') {	// Socket connection.
		$socket = substr($GLOBALS['DBHOST'], 1);
		$GLOBALS['DBHOST'] = 'localhost';
	} else {
		$socket = NULL;
	}

	if ($GLOBALS['FUD_OPT_1'] &amp; 256 &amp;&amp; $socket == NULL &amp;&amp; version_compare(PHP_VERSION, '5.3.0', '&gt;=')) {	// Enable pconnect for PHP 5.3+.
		$GLOBALS['DBHOST'] = 'p:'. $GLOBALS['DBHOST'];
	}

	db::$db = new mysqli($GLOBALS['DBHOST'], $GLOBALS['DBHOST_USER'], $GLOBALS['DBHOST_PASSWORD'], $GLOBALS['DBHOST_DBNAME'], NULL, $socket);
	if (mysqli_connect_errno()) {
		fud_sql_error_handler('Failed to establish database connection', 'MySQLi says: '. mysqli_connect_error(), mysqli_connect_errno(), '');
	}
	db::$db-&gt;set_charset('utf8');

	/* Connect to slave, if specified. */
	if (!empty($GLOBALS['DBHOST_SLAVE_HOST']) &amp;&amp; !$GLOBALS['is_post']) {
		db::$slave = new mysqli($GLOBALS['DBHOST'], $GLOBALS['DBHOST_USER'], $GLOBALS['DBHOST_PASSWORD'], $GLOBALS['DBHOST_DBNAME'], NULL, $socket);
		if (mysqli_connect_errno()) {
			fud_logerror('Unable to init SlaveDB, fallback to MasterDB: '. mysqli_connect_error(), 'sql_errors');
		} else {
			db::$db-&gt;set_charset('utf8');
		}
	}

	define('__dbtype__', 'mysql');
}

function db_close()
{
	 db::$db-&gt;close();
}

function db_version()
{
	if (!defined('__FUD_SQL_VERSION__')) {
		$ver = q_singleval('SELECT VERSION()');
		define('__FUD_SQL_VERSION__', $ver);
	}
	return __FUD_SQL_VERSION__;
}

function db_lock($tables)
{
	if (!empty($GLOBALS['__DB_INC_INTERNALS__']['db_locked'])) {
		fud_sql_error_handler('Recursive Lock', 'internal', 'internal', db_version());
	} else {
		q('LOCK TABLES '. $tables);
		$GLOBALS['__DB_INC_INTERNALS__']['db_locked'] = 1;
	}
}

function db_unlock()
{
	if (empty($GLOBALS['__DB_INC_INTERNALS__']['db_locked'])) {
		unset($GLOBALS['__DB_INC_INTERNALS__']['db_locked']);
		fud_sql_error_handler('DB_UNLOCK: no previous lock established', 'internal', 'internal', db_version());
	}

	if (--$GLOBALS['__DB_INC_INTERNALS__']['db_locked'] &lt; 0) {
		unset($GLOBALS['__DB_INC_INTERNALS__']['db_locked']);
		fud_sql_error_handler('DB_UNLOCK: unlock overcalled', 'internal', 'internal', db_version());
	}
	unset($GLOBALS['__DB_INC_INTERNALS__']['db_locked']);
	q('UNLOCK TABLES');
}

function db_locked()
{
	return isset($GLOBALS['__DB_INC_INTERNALS__']['db_locked']);
}

function db_affected()
{
	return db::$db-&gt;affected_rows;
}

function uq($query)
{
	$db = db::$db;
	$r = $db-&gt;real_query($query);
	if ($db-&gt;error) {
		fud_sql_error_handler($query, $db-&gt;error, $db-&gt;errno, db_version());
	}
	return $db-&gt;use_result();
}

if (!defined('fud_query_stats')) {
	function q($query)
	{
		// Assume master DB, route SELECT's to slave DB.
		// Force master if DB is locked (in transaction) or 'SELECT /* USE MASTER */'.
		$db = db::$db;
		if (!empty(db::$slave) &amp;&amp; !db_locked() &amp;&amp; !strncasecmp($query, 'SELECT', 6) &amp;&amp; strncasecmp($query, 'SELECT /* USE MASTER */', 23)) {
			$db = db::$slave;
		}

		$r = $db-&gt;query($query);
		if ($db-&gt;error) {
			fud_sql_error_handler($query, $db-&gt;error, $db-&gt;errno, db_version());
		}
		return $r;
	}
} else {
	function q($query)
	{
		if (!isset($GLOBALS['__DB_INC_INTERNALS__']['query_count'])) {
			$GLOBALS['__DB_INC_INTERNALS__']['query_count'] = 1;
		} else {
			++$GLOBALS['__DB_INC_INTERNALS__']['query_count'];
		}
	
		if (!isset($GLOBALS['__DB_INC_INTERNALS__']['total_sql_time'])) {
			$GLOBALS['__DB_INC_INTERNALS__']['total_sql_time'] = 0;
		}

		// Assume master DB, route SELECT's to slave DB.
		// Force master if DB is locked (in transaction) or 'SELECT /* USE MASTER */'.
		$db = db::$db;
		if (!empty(db::$slave) &amp;&amp; !db_locked() &amp;&amp; !strncasecmp($query, 'SELECT', 6) &amp;&amp; strncasecmp($query, 'SELECT /* USE MASTER */', 23)) {
			$db = db::$slave;
		}

		$s = microtime(true);
		$result = $db-&gt;query($query);
		if ($db-&gt;error) {
			fud_sql_error_handler($query, $db-&gt;error, $db-&gt;errno, db_version());
		}
		$e = microtime(true);

		$GLOBALS['__DB_INC_INTERNALS__']['last_time'] = ($e - $s);
		$GLOBALS['__DB_INC_INTERNALS__']['total_sql_time'] += $GLOBALS['__DB_INC_INTERNALS__']['last_time'];

		echo '&lt;hr&gt;&lt;b&gt;Query #'. $GLOBALS['__DB_INC_INTERNALS__']['query_count'] .'&lt;/b&gt;&lt;small&gt;';
		echo ': time taken:     &lt;i&gt;'. number_format($GLOBALS['__DB_INC_INTERNALS__']['last_time'], 4) .'&lt;/i&gt;';
		echo ', affected rows:  &lt;i&gt;'. db_affected() .'&lt;/i&gt;';
		echo ', total sql time: &lt;i&gt;'.  number_format($GLOBALS['__DB_INC_INTERNALS__']['total_sql_time'], 4) .'&lt;/i&gt;';
		echo '&lt;pre&gt;'. preg_replace('!\s+!', ' ', htmlspecialchars($query)) .'&lt;/pre&gt;&lt;/small&gt;';

		return $result; 
	}
}

function db_rowobj($result)
{
	return $result-&gt;fetch_object();
}

function db_rowarr($result)
{
	return $result-&gt;fetch_row();
}

function q_singleval($query)
{
	$r = q($query);
	if (($result = $r-&gt;fetch_row()) !== false &amp;&amp; isset($result)) {
		return isset($result) ? $result[0] : '';
	}
}

function q_limit($query, $limit, $off=0)
{
	return $query .' LIMIT '. $limit .' OFFSET '. $off;
}

function q_concat($arg)
{
	// MySQL badly breaks the SQL standard by redefining || to mean OR. 
	$tmp = func_get_args();
	return 'CONCAT('. implode(',', $tmp) .')';
}

function q_rownum() {
	q('SET @seq=0');		// For simulating rownum.
	return '(@seq:=@seq+1)';
}

function q_bitand($fieldLeft, $fieldRight) {
	return $fieldLeft .' &amp; '. $fieldRight;
}

function q_bitor($fieldLeft, $fieldRight) {
	return '('. $fieldLeft .' | '. $fieldRight .')';
}

function q_bitnot($bitField) {
	return '~'. $bitField;
}

function db_saq($q)
{
	$r = q($q);
	return $r-&gt;fetch_row() ;
}

function db_sab($q)
{
	$r = q($q);
	return $r-&gt;fetch_object();
}

function db_qid($q)
{
	q($q);
	return db::$db-&gt;insert_id;
}

function db_arr_assoc($q)
{
	$r = q($q);
	return $r-&gt;fetch_array(MYSQLI_ASSOC);
}

function db_fetch_array($r)
{
        return is_object($r) ? $r-&gt;fetch_array(MYSQLI_ASSOC) : null;
}

function db_li($q, &amp;$ef, $li=0)
{
	$r = db::$db-&gt;query($q);
	if ($r) {
		return ($li ? db::$db-&gt;insert_id : $r);
	}

	/* Duplicate key. */
	if (db::$db-&gt;errno == 1062) {
		$ef = ltrim(strrchr(db::$db-&gt;error, ' '));
		return null;
	} else {
		fud_sql_error_handler($q, db::$db-&gt;error, db::$db-&gt;errno, db_version());
	}
}

function ins_m($tbl, $flds, $types, $vals)
{
	q('INSERT IGNORE INTO '. $tbl .' ('. $flds .') VALUES ('. implode('),(', $vals) .')');
}

function db_all($q)
{
	$f = array();
	$c = uq($q);
	while ($r = $c-&gt;fetch_row()) {
		$f[] = $r[0];
	}
	return $f;
}

function _esc($s)
{
	return '\''. db::$db-&gt;real_escape_string($s ?? '') .'\'';
}function ses_make_sysid()
{
	if ($GLOBALS['FUD_OPT_2'] &amp; 256) {	// MULTI_HOST_LOGIN
		return;
	}

	$keys = array('REMOTE_USER', 'HTTP_USER_AGENT', 'SERVER_PROTOCOL', 'HTTP_ACCEPT_CHARSET', 'HTTP_ACCEPT_LANGUAGE');
	if ($GLOBALS['FUD_OPT_3'] &amp; 16) {	// SESSION_IP_CHECK
		$keys[] = 'HTTP_X_FORWARDED_FOR';
		$keys[] = 'REMOTE_ADDR';
	}
	$pfx = '';
	foreach ($keys as $v) {
		if (isset($_SERVER[$v])) {
			$pfx .= $_SERVER[$v];
		}
	}
	return md5($pfx);
}

function ses_get($id=0)
{
	$HTTP_USER_AGENT = $_SERVER['HTTP_USER_AGENT'] ?? '';
	$HTTP_REFERER    = $_SERVER['HTTP_REFERER']    ?? '';

	if (!$id) {
		/* Cookie or URL session? If not, check for known bots. */
		$cookie = $_COOKIE[$GLOBALS['COOKIE_NAME']] ?? null;
		if ($cookie) {
			/* Have cookie? */
			$q_opt = 's.ses_id='. _esc($cookie);
		} else if ((isset($_GET['S']) || isset($_POST['S'])) &amp;&amp; $GLOBALS['FUD_OPT_1'] &amp; 128) {
			/* Have session string */
			$url_session = 1;
			$q_opt = 's.ses_id='. _esc((isset($_GET['S']) ? (string) $_GET['S'] : (string) $_POST['S']));
			/* Do not validate against expired URL sessions. */
			$q_opt .= ' AND s.time_sec &gt; '. (__request_timestamp__ - $GLOBALS['SESSION_TIMEOUT']);
		} else {
			/* Unknown user, maybe a bot? */
			// Auto login authorized bots.
			// To test: wget --user-agent=&quot;Googlebot 1.2&quot; http://127.0.0.1:8080/forum
			$spider_session = 0;
			$my_ip = get_ip();

			include $GLOBALS['FORUM_SETTINGS_PATH'] .'spider_cache';
			foreach ($spider_cache as $spider_id =&gt; $spider) {
				if (preg_match('/'. $spider['useragent'] .'/i', $HTTP_USER_AGENT)) {
					if (empty($spider['bot_ip'])) {
						$spider_session = 1;	// Agent matched, no IPs to check.
						break; 
					} else {
						foreach (explode(',', $spider['bot_ip']) as $bot_ip) {
							if (!($bot_ip = trim($bot_ip))) {
								continue;
							}
							if (strpos($bot_ip, $my_ip) === 0)	{
								$spider_session = 1;	// Agent and an IP matched.
								break 2;
							}
						}
					}
				}
			}
			if ($spider_session) {
				if ($spider['bot_opts'] &amp; 2) {	// Access blocked.
					header('HTTP/1.1 403 Forbidden', true, 403);
					echo 'Go away!';
					exit;
				}
				if ($id = db_li('INSERT INTO fud30_ses (ses_id, time_sec, sys_id, ip_addr, useragent, user_id) VALUES (\''. $spider['botname'] .'\', '. __request_timestamp__ .', '. _esc(ses_make_sysid()) .', '. _esc($my_ip) .', '. _esc(substr($HTTP_USER_AGENT, 0, 64)) .', '. $spider['user_id'] .')', $ef, 1)) {
					$q_opt = 's.id='. $id;
				} else {
					$q_opt = 's.ses_id='. _esc($spider['botname']);
				}
				$GLOBALS['FUD_OPT_1'] ^= 128;	// Disable URL sessions for user.
			} else {
				/* NeXuS: What is this? Return if user unknown? Function should
				   return only after the query is run. */
				//return;
				
				// Check sys_id, ip_addr and useragent for a possible match
				$q_opt = 's.sys_id= '._esc(ses_make_sysid()).
				         ' AND s.ip_addr='._esc(get_ip()).
						 ' AND s.useragent='._esc(substr($HTTP_USER_AGENT, 0, 64));
			}
		}

		/* ENABLE_REFERRER_CHECK */
		if ($GLOBALS['FUD_OPT_3'] &amp; 4 &amp;&amp; strncmp($HTTP_REFERER, $GLOBALS['WWW_ROOT'], strlen($GLOBALS['WWW_ROOT']))) {
			/* More checks, we need those because some proxies mangle referer field. */
			$host = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : $_SERVER['SERVER_NAME'];
			/* $p &gt; 8 https:// or http:// */
			if (($p = strpos($HTTP_REFERER, $host)) === false || $p &gt; 8) {
				$q_opt .= ' AND s.user_id &gt; 2000000000 ';	// Different referrer, force anonymous.
			}
		}
	} else {
		$q_opt = 's.id='. $id;
	}

	$u = db_sab('SELECT
		s.id AS sid, s.ses_id, s.data, s.returnto, s.sys_id,
		t.id AS theme_id, t.lang, t.name AS theme_name, t.locale, t.theme, t.pspell_lang, t.theme_opt,
		u.alias, u.posts_ppg, u.time_zone, u.sig, u.last_visit, u.last_read, u.cat_collapse_status, u.users_opt, u.posted_msg_count, u.topics_per_page,
		u.ignore_list, u.buddy_list, u.id, u.group_leader_list, u.email, u.login, u.sq, u.ban_expiry, u.ban_reason, u.flag_cc
	FROM fud30_ses s
		INNER JOIN fud30_users u ON u.id=(CASE WHEN s.user_id&gt;2000000000 THEN 1 ELSE s.user_id END)
		LEFT OUTER JOIN fud30_themes t ON t.id=u.theme
	WHERE '. $q_opt);

	/* Anon user, no session or login. */
	if (!$u || $u-&gt;id == 1 || $id) {
		return $u;
	}

	if ($u-&gt;sys_id == ses_make_sysid()) {
		return $u;
	} else if ($GLOBALS['FUD_OPT_3'] &amp; 16 || isset($url_session)) {
		/* URL sessions must validate sys_id check and SESSION_IP_CHECK must be disabled */
		return;
	}

	/* Try doing a strict SQ match in last-ditch effort to make things 'work'. */
	if (isset($_POST['SQ']) &amp;&amp; $_POST['SQ'] == $u-&gt;sq) {
		return $u;
	}

	return;
}

/** Create an anonymous session. */
function ses_anon_make()
{
	$HTTP_USER_AGENT = substr($_SERVER['HTTP_USER_AGENT'] ?? '', 0, 64);

	// Prevent forum scraping and brute force attacks.
	if ($GLOBALS['MAX_CALLS_FROM_IP'] &gt; 0) {
		$ip_count = q_singleval('SELECT count(ip_addr) FROM fud30_ses WHERE ip_addr = '. _esc(get_ip()));
		if ($ip_count &gt; $GLOBALS['MAX_CALLS_FROM_IP']) {
			header('HTTP/1.1 429 Too Many Requests', true, 429);
			echo 'Too Many Requests';
			exit;
		}
	}

	do {
		$uid = 2000000000 + mt_rand(1, 147483647);
		$ses_id = md5($uid . __request_timestamp__ . getmypid());
	} while (!($id = db_li('INSERT INTO fud30_ses (ses_id, time_sec, sys_id, ip_addr, useragent, user_id) VALUES (\''. $ses_id .'\', '. __request_timestamp__ .', '. _esc(ses_make_sysid()) .', '. _esc(get_ip()) .', '. _esc($HTTP_USER_AGENT) .', '. $uid .')', $ef, 1)));

	/* When we have an anon user, we set a special cookie allowing us to see who referred this user. */
	if (isset($_GET['rid']) &amp;&amp; !isset($_COOKIE['frm_referer_id']) &amp;&amp; $GLOBALS['FUD_OPT_2'] &amp; 8192) {
		setcookie($GLOBALS['COOKIE_NAME'] .'_referer_id', $_GET['rid'], __request_timestamp__+31536000, $GLOBALS['COOKIE_PATH'], $GLOBALS['COOKIE_DOMAIN']);
	}

	if ($GLOBALS['FUD_OPT_3'] &amp; 1) {        // SESSION_COOKIES
		setcookie($GLOBALS['COOKIE_NAME'], $ses_id, 0,                                                $GLOBALS['COOKIE_PATH'], $GLOBALS['COOKIE_DOMAIN']);
	} else {
		setcookie($GLOBALS['COOKIE_NAME'], $ses_id, __request_timestamp__+$GLOBALS['COOKIE_TIMEOUT'], $GLOBALS['COOKIE_PATH'], $GLOBALS['COOKIE_DOMAIN']);
	}

	return ses_get($id);
}

/** Update session status to indicate last known action. */
function ses_update_status($ses_id, $action=null, $forum_id=0, $ret='')
{
	if (empty($ses_id)) {
		header('HTTP/1.1 400 Bad Request', true, 400);
		echo 'FATAL ERROR: No session, check your forum\'s URL and COOKIE settings.';
		exit;
	}
	if (strlen($_SERVER['QUERY_STRING'] ?? '') &gt; 255) {
		// Query string exceeds 'returnto' column length.
		header('HTTP/1.1 414 URI Too Long', true, 414);
                echo 'FATAL ERROR: QUERY_STRING too long!';
                exit;
        }
	$sys_id = ses_make_sysid();
	q('UPDATE fud30_ses SET sys_id=\''. $sys_id .'\', forum_id='. (int)$forum_id .', time_sec='. __request_timestamp__ .', action='. ($action ? _esc($action) : 'NULL') .', returnto='. (!is_int($ret) ? (isset($_SERVER['QUERY_STRING']) ? _esc($_SERVER['QUERY_STRING']) : 'NULL') : 'returnto') .' WHERE id='. $ses_id);
}

/** Save or clear a session variable. */
function ses_putvar($ses_id, $data)
{
	$cond = is_int($ses_id) ? 'id='. (int)$ses_id : 'ses_id=\''. $ses_id .'\'';

	if (empty($data)) {
		q('UPDATE fud30_ses SET data=NULL WHERE '. $cond);
	} else {
		q('UPDATE fud30_ses SET data='. _esc(serialize($data)) .' WHERE '. $cond);
	}
}

/** Destroy a session. */
function ses_delete($ses_id)
{
	// Delete all forum sessions.
	// Regardless of MULTI_HOST_LOGIN, all sessions will be terminated.
	q('DELETE FROM fud30_ses WHERE id='. (int)$ses_id);
	setcookie($GLOBALS['COOKIE_NAME'], '', __request_timestamp__-100000, $GLOBALS['COOKIE_PATH'], $GLOBALS['COOKIE_DOMAIN']);

	return 1;
}

function ses_anonuser_auth($id, $error)
{
	if (!empty($_POST)) {
		$_SERVER['QUERY_STRING'] = '';
	}
	q('UPDATE fud30_ses SET data='. _esc(serialize($error)) .', returnto='. ssn($_SERVER['QUERY_STRING']) .' WHERE id='. $id);
	if ($GLOBALS['FUD_OPT_2'] &amp; 32768) {	// USE_PATH_INFO
		header('Location: [[relativeurl]]/index.php/l/'. _rsidl);
	} else {
		header('Location: [[relativeurl]]/index.php?t=login&amp;'. _rsidl);
	}
	exit;
}function &amp;init_user()
{
	$o1 =&amp; $GLOBALS['FUD_OPT_1'];
	$o2 =&amp; $GLOBALS['FUD_OPT_2'];
	$o3 =&amp; $GLOBALS['FUD_OPT_3'];
	$o4 =&amp; $GLOBALS['FUD_OPT_4'];

	if ($o2 &amp; 32768 &amp;&amp; empty($_SERVER['PATH_INFO']) &amp;&amp; !empty($_SERVER['ORIG_PATH_INFO'])) {
		$_SERVER['PATH_INFO'] = $_SERVER['ORIG_PATH_INFO'];
	}

	/* We need to parse S &amp; rid right away since they are used during user init. */
	if ($o2 &amp; 32768 &amp;&amp; !empty($_SERVER['PATH_INFO']) &amp;&amp; empty($_GET['t'])) {	// USE_PATH_INFO
		$pb = $p = explode('/', trim($_SERVER['PATH_INFO'], '/'));
		if ($o1 &amp; 128) {	// SESSION_USE_URL
			$_GET['S'] = array_pop($p);
		}
		if ($o2 &amp; 8192) {	// TRACK_REFERRALS
			$_GET['rid'] = array_pop($p);
		}
		$_SERVER['QUERY_STRING'] = htmlspecialchars($_SERVER['PATH_INFO']) .'?'. $_SERVER['QUERY_STRING'];

		/* Default to index or blog page. */
		if (!isset($p[0])) {
			if ($o4 &amp; 16 &amp;&amp; $o4 &amp; 32) {	// Blog enabled and set as home page.
				$p[0] = 'blog';
			} else {
				$p[0] = 'i';
			}
		}
		/* Notice prevention code. */
		for ($i = 1; $i &lt; 5; $i++) {
			if (!isset($p[$i])) {
				$p[$i] = null;
			}
		}

		switch ($p[0]) {
			case 'm': /* goto specific message */
				$_GET['t'] = 0;
				$_GET['goto'] = $p[1];
				if (isset($p[2])) {
					$_GET['th'] = $p[2];
					if (isset($p[3]) &amp;&amp; is_numeric($p[3])) {
						$_GET['start'] = $p[3];
						if ($p[3]) {
							$_GET['t'] = 'msg';
							unset($_GET['goto']);
						}

						if (isset($p[4])) {
							if ($p[4] === 'prevloaded') {
								$_GET['prevloaded'] = 1;
								$i = 5;
							} else {
								$i = 4;
							}

							if (isset($p[$i])) {
								$_GET['rev'] = $p[$i];
								if (isset($p[$i+1])) {
									$_GET['reveal'] = $p[$i+1];
								}
							}
						}
					}
				}
				break;

			case 't': /* view thread */
				$_GET['t'] = 0;
				$_GET['th'] = $p[1];
				if (isset($p[2]) &amp;&amp; is_numeric($p[2])) {
					// START is not currently used for thread paging.
					// Set to 0, but keep code for possible future implementation.
					// $_GET['start'] = $p[2];
					$_GET['start'] = 0;
					if (!empty($p[3])) {
						$_GET[$p[3]] = 1;
					}
				}
				break;

			case 'f': /* view forum */
				$_GET['t'] = 1;
				$_GET['frm_id'] = $p[1];
				if (isset($p[2])) {
					$_GET['start'] = $p[2];
					if (isset($p[3])) {
						if ($p[3] === '0') {
							$_GET['sub'] = 1;
						} else {
							$_GET['unsub'] = 1;
						}
					}
				}
				break;

			case 'r':
				$_GET['t'] = 'post';
				$_GET[$p[1]] = $p[2];
				if (isset($p[3])) {
					$_GET['reply_to'] = $p[3];
					if (isset($p[4])) {
						if ($p[4]) {
							$_GET['quote'] = 'true';
						}
						if (isset($p[5])) {
							$_GET['start'] = $p[5];
						}
					}
				}
				break;

			case 'u': /* view user's info */
				$_GET['t'] = 'usrinfo';
				$_GET['id'] = $p[1];
				break;

			case 'i':
				$_GET['t'] = 'index';
				if (isset($p[1])) {
					$_GET['cat'] = (int) $p[1];
				}
				break;

			case 'fa':
				$_GET['t'] = 'getfile';
				$_GET['id'] = isset($p[1]) ? $p[1] : $pb[1];
				if (!empty($p[2])) {
					$_GET['private'] = 1;
				}
				break;

			case 'sp': /* show posts */
				$_GET['t'] = 'showposts';
				$_GET['id'] = $p[1];
				if (isset($p[2])) {
					$_GET['so'] = $p[2];
					if (isset($p[3])) {
						$_GET['start'] = $p[3];
					}
				}
				break;

			case 'l': /* login/logout */
				$_GET['t'] = 'login';
				if (isset($p[1])) {
					$_GET['logout'] = 1;
				}
				break;

			case 'e':
				$_GET['t'] = 'error';
				break;

			case 'st':
				$_GET['t'] = $p[1];
				$_GET['th'] = $p[2];
				$_GET['notify'] = $p[3];
				$_GET['opt'] = $p[4] ? 'on' : 'off';
				if (isset($p[5])) {
					$_GET['start'] = $p[5];
				}
				break;

			case 'sf':
				$_GET['t'] = $p[1];
				$_GET['frm_id'] = $p[2];
				$_GET[$p[3]] = 1;
				$_GET['start'] = $p[4];
				break;

			case 'sl': /* subscribed topic list */
				$_GET['t'] = 'subscribed';
				if ($p[1] == 'start') {
					$_GET['start'] = $p[2];
				} else {
					if (isset($p[2])) {
						$_GET['th'] = $p[2];
					} else if (isset($p[1])) {
						$_GET['frm_id'] = $p[1];
					}
				}
				break;

			case 'bml': /* bookmark list */
				$_GET['t'] = 'bookmarked';
				if ($p[1] == 'start') {
					$_GET['start'] = $p[2];
				} else {
					if (isset($p[2])) {
						$_GET['th'] = $p[2];
					}
				}
				break;

			case 'pmm':
				$_GET['t'] = 'ppost';
				if (isset($p[1], $p[2])) {
					$_GET[$p[1]] = $p[2];
					if (isset($p[3])) {
						$_GET['rmid'] = $p[3];
					}
				}
				break;

			case 'pmv':
				$_GET['t'] = 'pmsg_view';
				$_GET['id'] = $p[1];
				if (isset($p[2])) {
					$_GET['dr'] = 1;
				}
				break;

			case 'pdm':
				$_GET['t'] = 'pmsg';
				if (isset($p[1])) {
					if ($p[1] !== 'btn_delete') {
						$_GET['folder_id'] = $p[1];
					} else {
						$_GET['btn_delete'] = 1;
						$_GET['sel'] = $p[2];
					}
					if (isset($p[3])) {
						$_GET['s'] = $p[3];
						$_GET['o'] = $p[4];
						$_GET['start'] = $p[5];
					}
				}
				break;

			case 'pl': /* poll list */
				$_GET['t'] = 'polllist';
				if (isset($p[1])) {
					$_GET['uid'] = $p[1];
					if (isset($p[2])) {
						$_GET['start'] = $p[2];
						if (isset($p[3])) {
							$_GET['oby'] = $p[3];
						}
					}
				}
				break;

			case 'ml': /* member list */
				$_GET['t'] = 'finduser';
				if (isset($p[1])) {
					switch ($p[1]) {
						case 1: case 2: $_GET['pc'] = $p[1]; break;
						case 3: case 4: $_GET['us'] = $p[1]; break;
						case 5: case 6: $_GET['rd'] = $p[1]; break;
						case 7: case 8: $_GET['fl'] = $p[1]; break;
						case 9: case 10: $_GET['lv'] = $p[1]; break;
					}
					if (isset($p[2])) {
						$_GET['start'] = $p[2];
						if (isset($p[3])) {
							$_GET['usr_login'] = urldecode($p[3]);
							if (isset($p[4])) {
								$_GET['js_redr'] = $p[5];
							}
						}
					}
				}
				break;

			case 'h': /* help */
				$_GET['t'] = 'help_index';
				if (isset($p[1])) {
					$_GET['section'] = $p[1];
				}
				break;

			case 'cv': /* change thread view mode */
				$_GET['t'] = $p[1];
				$_GET['frm_id'] = $p[2];
				break;

			case 'mv': /* change message view mode */
				$_GET['t'] = $p[1];
				$_GET['th'] = $p[2];
				if (isset($p[3])) {
					if ($p[3] !== '0') {
						$_GET['goto'] = $p[3];
					} else {
						$_GET['prevloaded'] = 1;
						$_GET['start'] = $p[4];
						if (isset($p[5])) {
							$_GET['rev'] = $p[5];
							if (isset($p[6])) {
								$_GET['reveal'] = $p[6];
							}
						}
					}
				}
				break;

			case 'pv':
				$_GET['t'] = 0;
				if (isset($p[1])) {
					$_GET['goto'] = q_singleval('SELECT id FROM fud30_msg WHERE poll_id='.(int)$p[1]);
					$_GET['pl_view'] = empty($p[2]) ? 0 : (int)$p[2];
				}
				break;

			case 'rm': /* report message */
				$_GET['t'] = 'report';
				$_GET['msg_id'] = $p[1];
				break;

			case 'rl': /* list of reported messages */
				$_GET['t'] = 'reported';
				if (isset($p[1])) {
					$_GET['del'] = $p[1];
				}
				break;

			case 'd': /* delete thread/message */
				$_GET['t'] = 'mmod';
				$_GET['del'] = $p[1];
				if (isset($p[2])) {
					$_GET['th'] = $p[2];
				}
				break;

			case 'em': /* email forum member */
				$_GET['t'] = 'email';
				$_GET['toi'] = $p[1];
				break;

			case 'mar': /* mark all/forum read */
				$_GET['t'] = 'markread';
				if (isset($p[1])) {
					$_GET['id'] = $p[1];
					if (isset($p[2])) {
						$_GET['cat'] = $p[2];
					}
				}
				break;

			case 'bl': /* buddy list */
				$_GET['t'] = 'buddy_list';
				if (isset($p[1])) {
					if (!empty($p[2])) {
						$_GET['add'] = $p[1];
					} else {
						$_GET['del'] = $p[1];
					}
					if (isset($p[3])) {
						$_GET['redr'] = 1;
					}
				}
				break;

			case 'il': /* ignore list */
				$_GET['t'] = 'ignore_list';
				if (isset($p[1])) {
					if (!empty($p[2])) {
						$_GET['add'] = $p[1];
					} else {
						$_GET['del'] = $p[1];
					}
					if (isset($p[3])) {
						$_GET['redr'] = 1;
					}
				}
				break;

			case 'lk': /* lock/unlock thread */
				$_GET['t'] = 'mmod';
				$_GET['th'] = $p[1];
				$_GET[$p[2]] = 1;
				break;

			case 'stt': /* split thread */
				$_GET['t'] = 'split_th';
				if (isset($p[1])) {
					$_GET['th'] = $p[1];
				}
				break;

			case 'ef': /* email to friend */
				$_GET['t'] = 'remail';
				$_GET['th'] = $p[1];
				break;

			case 'lr': /* list referers */
				$_GET['t'] = 'list_referers';
				if (isset($p[1])) {
					$_GET['start'] = $p[1];
				}
				break;

			case 'a':
				$_GET['t'] = 'actions';
				if (isset($p[1], $p[2])) {
					$_GET['o'] = $p[1];
					$_GET['s'] = $p[2];
				}
				break;

			case 's':
				$_GET['t'] = 'search';
				if (isset($p[1])) {
					$_GET['srch'] = urldecode($p[1]);
					$_GET['field'] = isset($p[2]) ? $p[2] : '';
					$_GET['search_logic'] = isset($p[3]) ? $p[3] : '';
					$_GET['sort_order'] = isset($p[4]) ? $p[4] : '';
					$_GET['forum_limiter'] = isset($p[5]) ? $p[5] : '';
					$_GET['start'] = isset($p[6]) ? $p[6] : '';
					$_GET['author'] = isset($p[7]) ? $p[7] : '';
				}
				break;

			case 'p':
				if (!is_numeric($p[1])) {
					$_GET[$p[1]] = $p[2];
				} else {
					$_GET['frm']  = $p[1];
					$_GET['page'] = $p[2];
				}
				break;

			case 'ot':
				$_GET['t'] = 'online_today';
				if (isset($p[1], $p[2])) {
					$_GET['o'] = $p[1];
					$_GET['s'] = $p[2];
				}
				break;

			case 're':
				$_GET['t'] = 'register';
				if (isset($p[1])) {
					$_GET['reg_coppa'] = $p[1];
				}
				break;

			case 'tt':
				$_GET['t'] = $p[1];
				$_GET['frm_id'] = $p[2];
				break;

			case 'mh':
				$_GET['t'] = 'mvthread';
				$_GET['th'] = $p[1];
				if (isset($p[2], $p[3])) {
					$_GET[$p[2]] = $p[3];
				}
				break;

			case 'mn':
				$_GET['t'] = $p[1];
				$_GET['th'] = $p[2];
				$_GET['notify'] = $p[3];
				$_GET['opt'] = $p[4];
				if (isset($p[5])) {
					if ($p[1] == 'msg') {
						$_GET['start'] = $p[5];
					} else {
						$_GET['mid'] = $p[5];
					}
				}
				break;

			case 'bm': /* bookmark/unbookmark a topic */
				$_GET['t'] = $p[1];
				$_GET['th'] = $p[2];
				$_GET['bookmark'] = $p[3];
				$_GET['opt'] = $p[4];
				if (isset($p[5])) {
					if ($p[1] == 'msg') {
						$_GET['start'] = $p[5];
					} else {
						$_GET['mid'] = $p[5];
					}
				}
				break;

			case 'tr':
				$_GET['t'] = 'ratethread';
				break;

			case 'gm':
				$_GET['t'] = 'groupmgr';
				if (isset($p[1], $p[2], $p[3])) {
					$_GET[$p[1]] = $p[2];
					$_GET['group_id'] = $p[3];
				}
				break;

			case 'te':
				$_GET['t'] = 'thr_exch';
				if (isset($p[1], $p[2])) {
					$_GET[$p[1]] = $p[2];
				}
				break;

			case 'mq':
				$_GET['t'] = 'modque';
				if (isset($p[1], $p[2])) {
					$_GET[$p[1]] = $p[2];
				}
				break;

			case 'pr':
				$_GET['t'] = 'pre_reg';
				$_GET['coppa'] = $p[1];
				break;

			case 'qb':
				$_GET['t'] = 'qbud';
				break;

			case 'po':
				$_GET['t'] = 'poll';
				$_GET['frm_id'] = $p[1];
				if (isset($p[2])) {
					$_GET['pl_id'] = $p[2];
					if (isset($p[3], $p[4])) {
						$_GET[$p[3]] = $p[4];
					}
				}
				break;

			case 'sm':
				$_GET['t'] = 'smladd';
				break;

			case 'mk':
				$_GET['t'] = 'mklist';
				$_GET['tp'] = $p[1];
				break;

			case 'rp':
				$_GET['t'] = 'rpasswd';
				break;

			case 'as':
				$_GET['t'] = 'avatarsel';
				break;

			case 'sel':
				$_GET['t'] = 'selmsg';
				$c = count($p) - 1;
				if ($c % 2) {
					--$c;
				}
				$c /= 2;
				$i = 0;
				while ($c--) {
					$_GET[$p[++$i]] = $p[++$i];
				}
				break;

			case 'pml':
				$_GET['t'] = 'pmuserloc';
				$_GET['js_redr'] = $p[1];
				if (isset($p[2])) {
					$_GET['overwrite'] = 1;
				}
				break;

			case 'rst':
				$_GET['t'] = 'reset';
				if (isset($p[1])) {
					$_GET['email'] = urldecode($p[1]);
				}
				break;

			case 'cpf':
				$_GET['t'] = 'coppa_fax';
				break;

			case 'cp':
				$_GET['t'] = 'coppa';
				break;

			case 'rc':
				$_GET['t'] = 'reg_conf';
				break;

			case 'ma':
				$_GET['t'] = 'mnav';
				if (isset($p[1])) {
					$_GET['rng'] = isset($p[1]) ? $p[1] : 0;
					$_GET['rng2'] = isset($p[2]) ? $p[2] : 0;
					$_GET['u'] = isset($p[3]) ? $p[3] : 0;
					$_GET['start'] = isset($p[4]) ? $p[4] : 0;
					$_GET['sub'] = !empty($p[5]);
				}
				break;

			case 'ip':
				$_GET['t'] = 'ip';
				if (isset($p[1])) {
					$_GET[($p[1][0] == 'i' ? 'ip' : 'user')] = isset($p[2]) ? $p[2] : '';
				}
				break;

			case 'met':
				$_GET['t'] = 'merge_th';
				if (isset($p[1])) {
					$_GET['frm_id'] = $p[1];
				}
				break;

			case 'uc':
				$_GET['t'] = 'uc';
				if (isset($p[1], $p[2])) {
					$_GET[$p[1]] = $p[2];
				}
				break;

			case 'mmd':
				$_GET['t'] = 'mmd';
				break;

			case 'cal':	/* Calendar */
				$_GET['t'] = 'calendar';
				break;

			case 'blog':	/* Blog */
				$_GET['t'] = 'blog';
				if ($p[1] == 'u' &amp;&amp; isset($p[2])) {
					$_GET['user'] = $p[2];
					$_GET['start'] = isset($p[3]) ? $p[3] : 0;
				}
				if ($p[1] == 'f' &amp;&amp; isset($p[2])) {
					$_GET['forum'] = $p[2];
					$_GET['start'] = isset($p[3]) ? $p[3] : 0;
				} else {
					$_GET['start'] = $p[1];
				}
				break;

			case 'page':	/* Static page */
				$_GET['t'] = 'page';
				if (isset($p[1])) {
					$_GET['id'] = $p[1];
				}
				break;

			default:
				// Page not specified, redirect to front page.
				$_GET['t'] = 'index';
				break;
		}
		$GLOBALS['t'] = $_GET['t'];
	} else if (isset($_GET['t'])) {
		$GLOBALS['t'] = (string) $_GET['t'];
	} else if (isset($_POST['t'])) {
		$GLOBALS['t'] = (string) $_POST['t'];
	} else {
		if ($o4 &amp; 16 &amp;&amp; $o4 &amp; 32) {	// Blog enabled and set as home page.
			$GLOBALS['t'] = 'blog';
		} else {
			$GLOBALS['t'] = 'index';
		}
	}

	if ($GLOBALS['t'] == 'register') {
		$GLOBALS['THREADS_PER_PAGE_F'] = $GLOBALS['THREADS_PER_PAGE']; // Store old value.
	}

	header('P3P: CP=&quot;ALL CUR OUR IND UNI ONL INT CNT STA&quot;'); /* P3P Policy. */

	$sq = 0;
	/* Fetch an object with the user's session, profile &amp; theme info. */
	if (!($u = ses_get()) &amp;&amp; defined('plugins')) {
		/* Call auto-login plugins. */
		$u = plugin_call_hook('AUTO_LOGIN');
	}

	if (!$u) {
		/* New anon user. */
		$u = ses_anon_make();

		// Log POST reuests for Anon users.
		if (defined('fud_logging') || $GLOBALS['is_post'] ) {
			fud_logerror($_SERVER['REQUEST_URI'] .': '. print_r($_POST, true), 'post.log');
		}

	} else if ($u-&gt;id != 1 &amp;&amp; (!$GLOBALS['is_post'] || sq_check(1, $u-&gt;sq, $u-&gt;id, $u-&gt;ses_id))) {
		/* Store the last visit date for registered user. */
		q('UPDATE fud30_users SET last_visit='. __request_timestamp__ .' WHERE id='. $u-&gt;id);
		if ($GLOBALS['FUD_OPT_3'] &amp; 1) {	// SESSION_COOKIES
			setcookie($GLOBALS['COOKIE_NAME'], $u-&gt;ses_id, 0, $GLOBALS['COOKIE_PATH'], $GLOBALS['COOKIE_DOMAIN']);
		}
		if (!$u-&gt;sq || __request_timestamp__ - $u-&gt;last_visit &gt; 180) {	// 3 min.
			$u-&gt;sq = $sq = regen_sq($u-&gt;id);
			if (!$GLOBALS['is_post']) {
				$_GET['SQ'] = $sq;
			} else {
				$_POST['SQ'] = $sq;
			}
		} else {
			$sq =&amp; $u-&gt;sq;
		}
	}

	// Prevent spiders from doing funny stuff.
	if (($u-&gt;users_opt &amp; 1073741824) &amp;&amp; $GLOBALS['is_post']) {	// is_spider
		die('Bad bot!');
	}

	/* Disable caching for registered users and POST requests. */
	if ($GLOBALS['is_post'] || $u-&gt;id &gt; 1) {
		header('Cache-Control: no-store, private, must-revalidate, proxy-revalidate, post-check=0, pre-check=0, max-age=0, s-maxage=0');
		header('Expires: Mon, 21 Jan 1980 06:01:01 GMT');
		header('Pragma: no-cache');
	}

	if ($u-&gt;data) {
		$u-&gt;data = unserialize($u-&gt;data);
	}
	$uo = $u-&gt;users_opt = (int)$u-&gt;users_opt;

	/* This should allow path_info &amp; normal themes to work properly within 1 forum. */
	if ($o2 &amp; 32768 &amp;&amp; !($u-&gt;theme_opt &amp; 4)) {
		$o2 ^= 32768;
	}

	/* Handle PM disabling for users. */
	if (!($GLOBALS['is_a'] = $uo &amp; 1048576) &amp;&amp; $uo &amp; 33554432) {
		$o1 = $o1 &amp;~ 1024;
	}

	/* Set timezone. */
	if (empty($u-&gt;time_zone) || @date_default_timezone_set($u-&gt;time_zone) === FALSE) {
		date_default_timezone_set($GLOBALS['SERVER_TZ']);
	}

	/* Set locale. */
	$GLOBALS['good_locale'] = setlocale(LC_ALL, $u-&gt;locale);

	/* Call inituser plugins. */
	if (defined('plugins')) {
		plugin_call_hook('INITUSER', $u);
	}

	/* View format for threads &amp; messages. */
	define('d_thread_view', $uo &amp; 256 ? 'msg' : 'tree');
	define('t_thread_view', $uo &amp; 128 ? 'thread' : 'threadt');
	if ($GLOBALS['t'] === 0) {
		$GLOBALS['t'] = $_GET['t'] = d_thread_view;
	} else if ($GLOBALS['t'] === 1) {
		$GLOBALS['t'] = $_GET['t'] = t_thread_view;
	}

	/* Define theme path, may already be set by a plugin. */
	defined('fud_theme') or define('fud_theme', 'theme/'. ($u-&gt;theme_name ? $u-&gt;theme_name : 'default') .'/');

	/* Define _uid, which, will tell us if this is a 'real' user or not. */
	define('__fud_real_user__', ($u-&gt;id != 1 ? $u-&gt;id : 0));
	define('_uid', __fud_real_user__ &amp;&amp; ($uo &amp; 131072) &amp;&amp; !($uo &amp; 2097152) ? $u-&gt;id : 0);

	/* Allow user to set their own topics per page value, as long as it is smaller then the max. */
	if (__fud_real_user__ &amp;&amp; $GLOBALS['THREADS_PER_PAGE'] &gt; $u-&gt;topics_per_page) {
		$GLOBALS['THREADS_PER_PAGE'] = (int) $u-&gt;topics_per_page;
	}

	$GLOBALS['sq'] = $sq;

	/* Define constants used to track URL sessions &amp; referrals. */
	if ($o1 &amp; 128) {
		define('s', $u-&gt;ses_id); define('_hs', '&lt;input type=&quot;hidden&quot; name=&quot;S&quot; value=&quot;'. s .'&quot; /&gt;&lt;input type=&quot;hidden&quot; name=&quot;SQ&quot; value=&quot;'. $sq .'&quot; /&gt;');
		if ($o2 &amp; 8192) {
			if ($o2 &amp; 32768) {
				define('_rsid', __fud_real_user__ .'/'. s .'/');
			} else {
				define('_rsid', 'rid='. __fud_real_user__ .'&amp;amp;S='. s);
			}
		} else {
			if ($o2 &amp; 32768) {
				define('_rsid', s .'/');
			} else {
				define('_rsid', 'S='. s);
			}
		}
	} else {
		define('s', ''); define('_hs', '&lt;input type=&quot;hidden&quot; name=&quot;SQ&quot; value=&quot;'. $sq .'&quot; /&gt;');
		if ($o2 &amp; 8192) {
			if ($o2 &amp; 32768) {
				define('_rsid', __fud_real_user__ .'/');
			} else {
				define('_rsid', 'rid='. __fud_real_user__);
			}
		} else {
			define('_rsid', '');
		}
	}
	define('_rsidl', ($o2 &amp; 32768 ? _rsid : str_replace('&amp;amp;', '&amp;', _rsid)));

	return $u;
}

function user_register_forum_view($frm_id)
{
	if (__dbtype__ == 'mysql') {	// MySQL optimization.
		q('INSERT INTO fud30_forum_read (forum_id, user_id, last_view) VALUES ('. $frm_id .', '. _uid .', '. __request_timestamp__ .') ON DUPLICATE KEY UPDATE last_view=VALUES(last_view)');
		return;
	}
	
	if (!db_li('INSERT INTO fud30_forum_read (forum_id, user_id, last_view) VALUES ('. $frm_id .', '. _uid .', '. __request_timestamp__ .')', $ef)) {
		q('UPDATE fud30_forum_read SET last_view='. __request_timestamp__ .' WHERE forum_id='. $frm_id .' AND user_id='. _uid);
	}
}

function user_register_thread_view($thread_id, $tm=__request_timestamp__, $msg_id=0)
{
	if (__dbtype__ == 'mysql') {    // MySQL optimization.
		q('INSERT INTO fud30_read (last_view, msg_id, thread_id, user_id) VALUES('. $tm .', '. $msg_id .', '. $thread_id .', '. _uid .') ON DUPLICATE KEY UPDATE last_view=VALUES(last_view), msg_id=VALUES(msg_id)');
		return;
	}

	if (!db_li('INSERT INTO fud30_read (last_view, msg_id, thread_id, user_id) VALUES('. $tm .', '. $msg_id .', '. $thread_id .', '. _uid .')', $ef)) {
		q('UPDATE fud30_read SET last_view='. $tm .', msg_id='. $msg_id .' WHERE thread_id='. $thread_id .' AND user_id='. _uid);
	}
}

function user_set_post_count($uid)
{
	$pd = db_saq('SELECT MAX(id), count(*) FROM fud30_msg WHERE poster_id='. $uid .' AND apr=1');
	$level_id = (int) q_singleval(q_limit('SELECT id FROM fud30_level WHERE post_count &lt;= '. $pd[1] .' ORDER BY post_count DESC', 1));
	q('UPDATE fud30_users SET u_last_post_id='. (int)$pd[0] .', posted_msg_count='. (int)$pd[1] .', level_id='. $level_id .' WHERE id='. $uid);
}

function user_mark_all_read($id)
{
	q('UPDATE fud30_users SET last_read='. __request_timestamp__ .' WHERE id='. $id);
	q('DELETE FROM fud30_read WHERE user_id='. $id);
	q('DELETE FROM fud30_forum_read WHERE user_id='. $id);
}

function user_mark_forum_read($id, $fid, $last_view)
{
	if (__dbtype__ == 'mysql') {	// MySQL optimization.
		q('INSERT INTO fud30_read (user_id, thread_id, msg_id, last_view) SELECT '. $id .', id, last_post_id, '. __request_timestamp__ .' FROM fud30_thread WHERE forum_id='. $fid .' AND last_post_date &gt; '. $last_view .' ON DUPLICATE KEY UPDATE last_view=VALUES(last_view), msg_id=VALUES(msg_id)');
	} else if (__dbtype__ == 'sqlite') {	// SQLite optimization.
		q('REPLACE INTO fud30_read (user_id, thread_id, msg_id, last_view) SELECT '. $id .', id, last_post_id, '. __request_timestamp__ .' FROM fud30_thread WHERE forum_id='. $fid .' AND last_post_date &gt; '. $last_view);
	} else {	// Other databases.
		if (!db_li('INSERT INTO fud30_read (user_id, thread_id, msg_id, last_view) SELECT '. $id .', id, last_post_id, '. __request_timestamp__ .' FROM fud30_thread WHERE forum_id='. $fid .' AND last_post_date &gt; '. $last_view, $ef)) {
			q('UPDATE fud30_read SET user_id='. $id .', msg_id=t.last_post_id, last_view='. __request_timestamp__ .' FROM (SELECT id, last_post_id FROM fud30_thread WHERE forum_id='. $fid .' AND last_post_date &gt; '. $last_view .') t WHERE user_id='. $id .' AND thread_id=t.id');
		}
	}
	user_register_forum_view($fid);
}

function sq_check($post, &amp;$sq, $uid=__fud_real_user__, $ses=s)
{
	/* No sequence # check for anonymous users. */
	if (!$uid) {
		return 1;
	}

	if ($post &amp;&amp; isset($_POST['SQ'])) {
		$s = $_POST['SQ'];
	} else if (!$post &amp;&amp; isset($_GET['SQ'])) {
		$s = $_GET['SQ'];
	} else {
		$s = 0;
	}

	if ($sq !== $s) {
		if ($GLOBALS['t'] == 'post' || $GLOBALS['t'] == 'ppost') {
			define('fud_bad_sq', 1);
			$sq = regen_sq($uid);
			return 1;
		}
		header('Location: [[relativeurl]]/index.php?S='. $ses);
		exit;
	}

	return 1;
}

function regen_sq($uid=__fud_real_user__)
{
	$sq = md5(get_random_value(128));
	q('UPDATE fud30_users SET sq=\''. $sq .'\' WHERE id='. $uid);
	return $sq;
}

// Initialize user session.
if (isset($_SERVER['REMOTE_ADDR']) &amp;&amp; !defined('no_session')) {
	$GLOBALS['usr'] = init_user();
}function read_msg_body($off, $len, $id)
{
	if ($off == -1) {	// Fetch from DB and return.
		return q_singleval('SELECT data FROM fud30_msg_store WHERE id='. $id);
	}

	if (!$len) {	// Empty message.
		return;
	}

	// Open file if it's not already open.
	if (!isset($GLOBALS['__MSG_FP__'][$id])) {
		$GLOBALS['__MSG_FP__'][$id] = fopen($GLOBALS['MSG_STORE_DIR'] .'msg_'. $id, 'rb');
	}

	// Read from file.
	fseek($GLOBALS['__MSG_FP__'][$id], $off);
	return fread($GLOBALS['__MSG_FP__'][$id], $len);
}$GLOBALS['__revfs'] = array('&amp;quot;', '&amp;lt;', '&amp;gt;', '&amp;amp;');
$GLOBALS['__revfd'] = array('&quot;', '&lt;', '&gt;', '&amp;');

function reverse_fmt($data)
{
	$s = $d = array();
	if (empty($data)) return '';

	foreach ($GLOBALS['__revfs'] as $k =&gt; $v) {
		if (strpos($data, $v) !== false) {
			$s[] = $v;
			$d[] = $GLOBALS['__revfd'][$k];
		}
	}

	return $s ? str_replace($s, $d, $data) : $data;
}$GLOBALS['__SML_CHR_CHK__'] = array(&quot;\n&quot;=&gt;1, &quot;\r&quot;=&gt;1, &quot;\t&quot;=&gt;1, ' '=&gt;1, ']'=&gt;1, '['=&gt;1, '&lt;'=&gt;1, '&gt;'=&gt;1, '\''=&gt;1, '&quot;'=&gt;1, '('=&gt;1, ')'=&gt;1, '.'=&gt;1, ','=&gt;1, '!'=&gt;1, '?'=&gt;1, ';'=&gt;1);

function smiley_to_post($text)
{
	$text_l = strtolower($text);
	include $GLOBALS['FORUM_SETTINGS_PATH'] .'sp_cache';

	/* remove all non-formatting blocks */
	foreach (array('&lt;/pre&gt;'=&gt;'&lt;pre&gt;', '&lt;/span&gt;' =&gt; '&lt;span name=&quot;php&quot;&gt;') as $k =&gt; $v) {
		$p = 0;
		while (($p = strpos($text_l, $v, $p)) !== false) {
			if (($e = strpos($text_l, $k, $p)) === false) {
				$p += 5;
				continue;
			}
			$text_l = substr_replace($text_l, str_repeat(' ', $e - $p), $p, ($e - $p));
			$p = $e;
		}
	}

	foreach ($SML_REPL as $k =&gt; $v) {
		$a = 0;
		$len = strlen($k);
		while (($a = strpos($text_l, $k, $a)) !== false) {
			if ((!$a || isset($GLOBALS['__SML_CHR_CHK__'][$text_l[$a - 1]])) &amp;&amp; ((@$ch = $text_l[$a + $len]) == '' || isset($GLOBALS['__SML_CHR_CHK__'][$ch]))) {
				$text_l = substr_replace($text_l, $v, $a, $len);
				$text = substr_replace($text, $v, $a, $len);
				$a += strlen($v) - $len;
			} else {
				$a += $len;
			}
		}
	}

	return $text;
}

function post_to_smiley($text)
{
	/* include once since draw_post_smiley_cntrl() may use it too */
	include_once $GLOBALS['FORUM_SETTINGS_PATH'].'ps_cache';
	if (isset($PS_SRC)) {
		$GLOBALS['PS_SRC'] = $PS_SRC;
		$GLOBALS['PS_DST'] = $PS_DST;
	} else {
		$PS_SRC = $GLOBALS['PS_SRC'];
		$PS_DST = $GLOBALS['PS_DST'];
	}

	/* check for emoticons */
	foreach ($PS_SRC as $k =&gt; $v) {
		if (strpos($text, $v) === false) {
			unset($PS_SRC[$k], $PS_DST[$k]);
		}
	}

	return $PS_SRC ? str_replace($PS_SRC, $PS_DST, $text) : $text;
}


	if (!($FUD_OPT_2 &amp; 134217728)) {	// PDF_ENABLED
		std_error('disabled');
	}

	if ($FUD_OPT_2 &amp; 16384) {		// PHP_COMPRESSION_ENABLE
		ob_start('ob_gzhandler', (int)$PHP_COMPRESSION_LEVEL);
	}

	$forum	= isset($_GET['frm']) ? (int)$_GET['frm'] : 0;
	$thread	= isset($_GET['th']) ? (int)$_GET['th'] : 0;
	$msg	= isset($_GET['msg']) ? (int)$_GET['msg'] : 0;
	$page	= isset($_GET['page']) ? (int)$_GET['page'] : 0;
	$sel	= isset($_GET['sel']) ? (array)$_GET['sel'] : array();

	// Cleanup $sel
	foreach ($sel as $k =&gt; $v) {
		if ($v = (int)$v) {
			$sel[$k] = $v;
		} else {
			unset($sel[$k]);
		}
	}

	if ($forum) {
		if (!($FUD_OPT_2 &amp; 268435456)) {	// PDF_ALLOW_FULL
			 std_error('disabled');		
		}

		if (!$page) {
			$page = 1;
		}

		if ($page) {
			if (!q_singleval('SELECT id FROM fud30_forum WHERE id='. $forum)) {
				invl_inp_err();
			}
			$lwi = q_singleval(q_limit('SELECT seq FROM fud30_tv_'. $forum .' ORDER BY seq DESC', 1));
			if ($lwi === NULL || $lwi === FALSE) {
				invl_inp_err();
			}

			$join = 'FROM fud30_tv_'. $forum .' tv
				INNER JOIN fud30_thread t ON t.id=tv.thread_id
				INNER JOIN fud30_forum f ON f.id='. $forum .'
				INNER JOIN fud30_msg m ON m.thread_id=t.id
				LEFT JOIN fud30_users u ON m.poster_id=u.id
				LEFT JOIN fud30_poll p ON m.poll_id=p.id
			';
			$lmt = ' AND tv.seq BETWEEN '. ($lwi - ($page * $THREADS_PER_PAGE) + 1) .' AND '. ($lwi - (($page - 1) * $THREADS_PER_PAGE));
		} else {
			$join = 'FROM fud30_forum f
				INNER JOIN fud30_thread t ON t.forum_id=f.id
				INNER JOIN fud30_msg m ON m.thread_id=t.id
				LEFT JOIN fud30_users u ON m.poster_id=u.id
				LEFT JOIN fud30_poll p ON m.poll_id=p.id
			';
			$lmt = ' AND f.id='. $forum;
		}
	} else if ($thread) {
		$join = 'FROM fud30_msg m
				INNER JOIN fud30_thread t ON t.id=m.thread_id
				INNER JOIN fud30_forum f ON f.id=t.forum_id
				LEFT JOIN fud30_users u ON m.poster_id=u.id
				LEFT JOIN fud30_poll p ON m.poll_id=p.id
			';
		$lmt = ' AND m.thread_id='. $thread;
	} else if ($msg) {
		$lmt = ' AND m.id='. $msg;
		$join = 'FROM fud30_msg m
				INNER JOIN fud30_thread t ON t.id=m.thread_id
				INNER JOIN fud30_forum f ON f.id=t.forum_id
				LEFT JOIN fud30_users u ON m.poster_id=u.id
				LEFT JOIN fud30_poll p ON m.poll_id=p.id
			';
	} else if ($sel) { /* PM handling. */
		if (!q_singleval('SELECT count(*) FROM fud30_pmsg WHERE id IN('. implode(',', $sel) .') AND duser_id='. _uid)) {
			invl_inp_err();
		}
		fud_use('private.inc');
	} else {
		invl_inp_err();
	}

	if (_uid) {
		if (!$is_a) {
			$join .= '	INNER JOIN fud30_group_cache g1 ON g1.user_id=2147483647 AND g1.resource_id=f.id
					LEFT JOIN fud30_group_cache g2 ON g2.user_id='. _uid .' AND g2.resource_id=f.id
					LEFT JOIN fud30_mod mm ON mm.forum_id=f.id AND mm.user_id='. _uid .' ';
			$lmt .= ' AND (mm.id IS NOT NULL OR '. q_bitand('COALESCE(g2.group_cache_opt, g1.group_cache_opt)', 2) .' &gt; 0)';
		}
	} else {
		$join .= ' INNER JOIN fud30_group_cache g1 ON g1.user_id=0 AND g1.resource_id=f.id ';
		$lmt .= ' AND '. q_bitand('g1.group_cache_opt', 2) .' &gt; 0';
	}

	if ($forum) {
		$subject = q_singleval('SELECT name FROM fud30_forum WHERE id='. $forum);
	}

	if (!$sel) {
		$c = q('SELECT
				m.id, m.thread_id, m.subject, m.post_stamp,
				m.attach_cnt, m.attach_cache, m.poll_cache,
				m.foff, m.length, m.file_id, u.id AS user_id,
				COALESCE(u.alias, \''. $ANON_NICK .'\') as alias,
				p.name AS poll_name, p.total_votes
			'. $join .'
			WHERE
				t.moved_to=0 AND m.apr=1 '. $lmt .' ORDER BY m.post_stamp, m.thread_id');
	} else {
		$c = q('SELECT p.*, u.alias, p.duser_id AS user_id FROM fud30_pmsg p 
				LEFT JOIN fud30_users u ON p.ouser_id=u.id
				WHERE p.id IN('. implode(',', $sel) .') AND p.duser_id='. _uid);
	}

	if (!($o = db_rowobj($c))) {
		invl_inp_err();
	}

	if ($thread || $msg) {
		$subject = reverse_fmt($o-&gt;subject);
	} else if ($sel) {
		$subject = 'Private Message Archive';
	}

	$fpdf = new fud_pdf('P', 'mm', $PDF_PAGE);
	$fpdf-&gt;SetAuthor('FUDforum '. $FORUM_VERSION);
	$fpdf-&gt;SetTitle(html_entity_decode($FORUM_TITLE));
	$fpdf-&gt;SetSubject($subject);
	$fpdf-&gt;SetMargins($PDF_WMARGIN, $PDF_HMARGIN);
	$fpdf-&gt;AliasNbPages('{fnb}');       // Alias for total number of pages.

	$fpdf-&gt;begin_page($subject);
	do {
		/* Write message header. */
		$fpdf-&gt;message_header(html_entity_decode($o-&gt;subject), array($o-&gt;user_id, html_entity_decode($o-&gt;alias)), $o-&gt;post_stamp, $o-&gt;id, (isset($o-&gt;thread_id) ? $o-&gt;thread_id : 0));

		/* Write message body. */
		if (!$sel) {
			$body = read_msg_body($o-&gt;foff, $o-&gt;length, $o-&gt;file_id);
		} else {
			$body = read_pmsg_body($o-&gt;foff, $o-&gt;length);
		}

		$fpdf-&gt;input_text(html_entity_decode(strip_tags(post_to_smiley($body))));

		/* Handle attachments. */
		if ($o-&gt;attach_cnt) {
			if (!empty($o-&gt;attach_cache) &amp;&amp; ($a = unserialize($o-&gt;attach_cache))) {
				$attch = array();
				foreach ($a as $i) {
					$attch[] = array('id' =&gt; $i[0], 'name' =&gt; $i[1], 'nd' =&gt; $i[3]);
				}
				$fpdf-&gt;add_attacments($attch);
			} else if ($sel) {
				$attch = array();
				$c2 = uq('SELECT id, original_name, dlcount FROM fud30_attach WHERE message_id='. $o-&gt;id .' AND attach_opt=1');
				while ($r2 = db_rowarr($c2)) {
					$attch[] = array('id' =&gt; $r2[0], 'name' =&gt; $r2[1], 'nd' =&gt; $r2[2]);
				}
				unset($c2);
				if ($attch) {
					$fpdf-&gt;add_attacments($attch, 1);
				}
			}
		}

		/* Handle polls. */
		if (!empty($o-&gt;poll_name) &amp;&amp; $o-&gt;poll_cache &amp;&amp; ($pc = unserialize($o-&gt;poll_cache))) {
			$votes = array();
			foreach ($pc as $opt) {
				$votes[] = array('name' =&gt; html_entity_decode(strip_tags(post_to_smiley($opt[0]))), 'votes' =&gt; $opt[1]);
			}
			$fpdf-&gt;add_poll(html_entity_decode($o-&gt;poll_name), $votes, $o-&gt;total_votes);
		}

		$fpdf-&gt;end_message();
	} while (($o = db_rowobj($c)));
	unset($c);

	/* Output content to browser. */
	$out = $fpdf-&gt;Output('FUDforum'. date('Ymd') .'.pdf', 'S');
	header('Content-Type: application/pdf');
	if ($_SERVER['SERVER_PORT'] == '443' &amp;&amp; (strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false)) {
		header('Cache-Control: must-revalidate, post-check=0, pre-check=0', 1);
		header('Pragma: public', 1);
	}
	if (!($GLOBALS['FUD_OPT_2'] &amp; 16384)) {
		header('Content-Length: '. strlen($out));
	}
	header('Content-disposition: inline; filename=FUDforum'. date('Ymd') .'.pdf');
	echo $out;
?&gt;
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