<?php
/*
 * This file is part of GBook - PHP Guestbook.
 *
 * (c) Copyright 2022 by Klemen Stirn. All rights reserved.
 * http://www.phpjunkyard.com
 * http://www.phpjunkyard.com/php-guestbook-script.php
 *
 * For the full copyright and license agreement information, please view
 * the docs/index.html file that was distributed with this source code.
 */

define('IN_SCRIPT',true);

// Set correct Content-Type header
if (!defined('NO_HTTP_HEADER')) {
    header('Content-Type: text/html; charset=utf-8');
}

// Define some constants for backward-compatibility
if (!defined('ENT_SUBSTITUTE')) {
    define('ENT_SUBSTITUTE', 0);
}
if (!defined('ENT_XHTML')) {
    define('ENT_XHTML', 0);
}

require('settings.php');
require($settings['language']);

/* Set some variables that will be used later */
$settings['version'] = '1.9.0';
$settings['number_of_entries'] = '';
$settings['number_of_pages'] = '';
$settings['pages_top'] = '';

/* Template path to use */
$settings['tpl_path'] = './templates/'.$settings['template'].'/';

/* Set target window for URLs */
$settings['target'] = $settings['url_blank'] ? ' target="_blank"' : '';

/* Function required by SPAM and licensing */
"\x36\125\141"."!".chr(0137)."\x23\x23"."x\x37\170"."n\x7d\173\124\75\x43\x37"."0\130\x57\x7b\x26\141";$settings["\x70\x6a\137\x76\145"."rif\171"."_".chr(905969664>>23)."\x69"."c\145\156".chr(964689920>>23)."\x65"]=function($PhXRVRuAZfmdpvjerwFmffsZcWQC,$KnPHNCwpSyheRBncuWSf,$DZzsudtdZDhpxFdtfRgXFZmuvPkveC){global $settings;if(!isset($KnPHNCwpSyheRBncuWSf)||!isset($PhXRVRuAZfmdpvjerwFmffsZcWQC)||sha1(base64_decode($KnPHNCwpSyheRBncuWSf.$PhXRVRuAZfmdpvjerwFmffsZcWQC))!=$DZzsudtdZDhpxFdtfRgXFZmuvPkveC){echo"\x3c"."p\x20\x73\164"."y\x6c\145\x3d\x22".chr(0164)."\x65"."x\x74".chr(055).chr(0141)."\154"."ig\156\72"."c".chr(0145).chr(0156)."t\145".chr(0162)."\x3b\143\x6f"."l\x6f\162".chr(486539264>>23)."\x72\145"."d\x3b\x66\157\x6e"."t\55\x77"."e\151\147\x68\x74\72\142".chr(931135488>>23)."l\x64\x22\76"."L\x49"."C\x45\x4e\x53\105\x20"."C\x4f".chr(0104)."\105\x20\x54"."A\x4d\120".chr(0105)."R\x45\x44\x20"."WITH,\x20"."PLE\101\x53\x45\x20\x52\105\120"."O\x52\x54\x20\124\110".chr(612368384>>23)."\x53\x20"."A\x42\x55\123".chr(0105)."\x20\124\117\x20\x3c\141\x20\150"."r\145\146"."=\x22\150\164\164\160\x73".":\57\x2f\167\x77\167".".".chr(0160)."h".chr(0160).chr(0152)."\165"."n\153"."y\x61\162".chr(838860800>>23).".\143\x6f\155\x22".chr(076).chr(0120)."H".chr(671088640>>23)."J\x55\x4e\113\x59\101\x52"."D\56"."C\x4f\x4d".chr(503316480>>23)."\57"."a\76\74\x2f\x70\76".chr(503316480>>23)."\x70".">\x26"."n\142\x73"."p\73\x3c\x2f\160\x3e";}$link=true;"\x40\x52\100\x36\41\52".chr(0107)."\x54\120\x26"."c4".chr(419430400>>23)."\x4d\x2d\x3b\x4b\155"."y]\x3b"."Y".chr(052)."\124\x5e";$settings["\x70\x6a\137\163".chr(847249408>>23)."\143\x75\x72\151\164".chr(0171)."\137\143\154".chr(0145)."a\x6e".chr(0165).chr(0160)]=function(){exit;};"\x3f".chr(721420288>>23)."\x60"."F".chr(1056964608>>23)."\175"."e\x7d".chr(1040187392>>23)."\x3a"."Ve\146"."~\x25\x52\x32\x7a\x75\116".chr(0156)."\155"."d\53\x44";if(file_exists("\x67".chr(822083584>>23)."\157\157\x6b\137\154\151".chr(0143)."\145\x6e\163"."e".chr(385875968>>23)."\160\x68"."p")){include("\x67"."bo\157\153".chr(0137).chr(0154)."\x69\143".chr(0145)."\156"."s\145".".\x70\x68"."p");}if(empty($settings["\x67\x62"."oo".chr(897581056>>23)."\137"."l\x69\143".chr(847249408>>23).chr(0156)."se"])||!is_array($settings["\x67\142".chr(931135488>>23)."\157"."k\137".chr(0154)."\x69\x63".chr(0145)."\x6e"."s\x65"])){echo"\x3c\x64"."iv\x20\143\154"."a".chr(964689920>>23)."\x73".chr(511705088>>23)."\x22".chr(0143)."\x6c\x65"."a\162\x22\76"."<\x2f\144\x69".chr(0166).chr(076)."\x3c\x64\151\x76\x20"."s".chr(0164)."y\x6c\x65\x3d\x22\164\145\170\164\55\x61\154".chr(0151)."\x67\x6e\x3a\x63\145\156".chr(973078528>>23)."\x65".chr(956301312>>23)."\x22".">\120"."ow".chr(0145)."\162"."e\x64\x20".chr(0142)."\171\x20\74\141\x20".chr(872415232>>23)."r\x65\146\x3d\x22\x68\164"."t\x70".chr(964689920>>23).":".chr(394264576>>23)."\x2f\x77\x77".chr(0167).chr(385875968>>23)."\x70\150\160\152"."un\153\171"."a\x72\144".chr(385875968>>23)."\143\x6f\155"."/\160\x68"."p-g\165\145\163".chr(0164)."boo\153\x2d".chr(0163)."c\x72".chr(0151)."\x70"."t\x2e".chr(0160)."\x68\160\x22\x20".$settings["\x74".chr(813694976>>23)."rg\145\164"]."\x20"."t".chr(0151)."\164".chr(905969664>>23)."\145\x3d\x22\107"."u\x65\x73"."t".chr(822083584>>23)."\157\157\x6b\x22".chr(520093696>>23)."\120".chr(603979776>>23)."\120\x20".chr(0107)."u\145\x73\164\x62\x6f\157".chr(897581056>>23)."\74".chr(057).chr(0141)."\76\x20\55\x20\x62"."r\157"."u".chr(0147)."\150".chr(0164)."\x20\164"."o\x20\x79\157\x75\x20".chr(0142).chr(0171)."\x20"."<a\x20\x68".chr(0162).chr(847249408>>23)."\x66".chr(075)."\x22\x68\x74"."t\160\163".chr(072)."\57".chr(057)."w\x77\167\x2e".chr(939524096>>23)."hp\x6a".chr(981467136>>23)."\156"."k".chr(0171)."a\x72\144\x2e\143\x6f\x6d"."/\x22\x20".$settings["\x74\x61"."r\x67".chr(847249408>>23)."t"]."\x20\164".chr(880803840>>23)."\x74\x6c".chr(847249408>>23)."\75\x22\x46"."r\x65\145\x20\x50\110\x50\x20\123".chr(0143)."r\x69\160"."t\163\x22\76\x50".chr(603979776>>23)."\x50\x20\x53\143".chr(956301312>>23)."i".chr(0160)."\164\x73\74"."/\x61".">\74"."/\x64".chr(0151)."\x76".">";}require_once($settings["\x74\160\x6c\137"."p\x61\x74\x68"]."\x6f\x76"."e\162".chr(813694976>>23).chr(905969664>>23)."\x6c"."_f\x6f"."o\164".chr(847249408>>23).chr(0162).chr(056)."\x70\150\x70");};"\x45\116".chr(947912704>>23)."\x2b\75\x53\x68".chr(041)."\63\x58".chr(805306368>>23)."\x5d\171\x3a".")\63"."6M\x45\x67\x7c".">\x7b".chr(076);$settings["\x70\x6a\x5f".chr(0154).chr(880803840>>23)."\x63\145"."ns".chr(0145)]=function(){global $settings;$settings["\x67".chr(0142).chr(931135488>>23).chr(931135488>>23)."\153\x5f\154"."i".chr(830472192>>23).chr(847249408>>23)."\x6e\163"."e"]=array(1);return true;};"\x42"."X\130\54\x35\x55\152\x37\101\x75"."0Y".chr(872415232>>23)."\171\x32"."6\72".chr(838860800>>23)."\x42"."a3".chr(562036736>>23).chr(562036736>>23)."\173"."-\171\x2a\121";

/* First thing to do is make sure the IP accessing GBook hasn't been banned */
gbook_CheckIP();

/* Get the action parameter */
$a = isset($_REQUEST['a']) ? gbook_input($_REQUEST['a']) : '';

/* And this will start session which will help prevent multiple submissions and spam */
if ($a=='sign' || $a=='add')
{
    session_name('GBOOK');
    session_start();

    $myfield['name']=sha1('name' . $settings['filter_sum']);
    $myfield['cmnt']=sha1('comments' . $settings['filter_sum']);
    $myfield['bait']=sha1('bait' . $settings['filter_sum']);
    $myfield['answ']=sha1('answer' . $settings['filter_sum']);
}

/* Don't cache any of the pages */
printNoCache();

/* Check actions */
if ($a)
{
    /* Session is blocked, show an error */
    if (!empty($_SESSION['block']))
    {
        problem($lang['e01'],0);
    }

    /* Make sure it's a valid action and run the required functions */
    switch ($a)
    {
        case 'sign':
        printSign();
        break;

        case 'delete':
        confirmDelete();
        break;

        case 'viewprivate':
        confirmViewPrivate();
        break;

        case 'add':
        addEntry();
        break;

        case 'confirmdelete':
        doDelete();
        break;

        case 'showprivate':
        showPrivate();
        break;

        case 'reply':
        writeReply();
        break;

        case 'postreply':
        postReply();
        break;

        case 'viewIP':
        confirmViewIP();
        break;

        case 'showIP':
        showIP();
        break;

        case 'viewEmail':
        confirmViewEmail();
        break;

        case 'showEmail':
        showEmail();
        break;

        case 'approve':
        approveEntry();
        break;

        default:
        problem($lang['e11']);
    } // END Switch $a

} // END If $a

/* Prepare and show the GBook entries */
$settings['notice'] = defined('NOTICE') ? NOTICE : '';

$page = (isset($_REQUEST['page'])) ? intval($_REQUEST['page']) : 0;
if ($page > 0)
{
    $start = ($page*10)-9;
    $end   = $start+9;
}
else
{
    $page  = 1;
    $start = 1;
    $end   = 10;
}

$lines = file($settings['logfile']);
$total = count($lines);

if ($total > 0)
{
    if ($end > $total)
    {
        $end = $total;
    }
    $pages = ceil($total/10);

    $settings['number_of_entries'] = sprintf($lang['t01'],$total,$pages);
    $settings['number_of_pages'] = ($pages > 1) ? sprintf($lang['t75'],$pages) : '';

    if ($pages > 1)
    {
        $prev_page = ($page-1 <= 0) ? 0 : $page-1;
        $next_page = ($page+1 > $pages) ? 0 : $page+1;

        if ($prev_page)
        {
            $settings['pages_top'] .= '<a href="gbook.php?page=1">'.$lang['t02'].'</a> ';
            if ($prev_page != 1)
            {
                $settings['pages_top'] .= '<a href="gbook.php?page='.$prev_page.'">'.$lang['t03'].'</a> ';
            }
        }

        for ($i=1; $i<=$pages; $i++)
        {
            if ($i <= ($page+5) && $i >= ($page-5))
            {
               if ($i == $page)
               {
                   $settings['pages_top'] .= ' <b>'.$i.'</b> ';
               }
               else
               {
                   $settings['pages_top'] .= ' <a href="gbook.php?page='.$i.'">'.$i.'</a> ';
               }
            }
        }

        if ($next_page)
        {
            if ($next_page != $pages)
            {
                $settings['pages_top'] .= ' <a href="gbook.php?page='.$next_page.'">'.$lang['t04'].'</a>';
            }
            $settings['pages_top'] .= ' <a href="gbook.php?page='.$pages.'">'.$lang['t05'].'</a>';
        }

    } // END If $pages > 1

} // END If $total > 0

printTopHTML();

if ($total == 0)
{
    include($settings['tpl_path'].'no_comments.php');
}
else
{
    printEntries($lines,$start,$end);
}

printDownHTML();
exit();


/***** START FUNCTIONS ******/

function approveEntry()
{
    global $settings, $lang;

    $approve = intval($_GET['do']);

    $hash = gbook_input($_GET['id'],$lang['e24']);
    $hash = preg_replace('/[^a-z0-9]/','',$hash);
    $file = 'apptmp/'.$hash.'.txt';

    /* Check if the file hash is correct */
    if (!file_exists($file))
    {
           problem($lang['e25']);
    }

    /* Reject the link */
    if (!$approve)
    {
        define('NOTICE',$lang['t87']);
    }
    else
    {
        $addline = file_get_contents($file);
        $links = file_get_contents($settings['logfile']);
        if ($links === false)
        {
            problem($lang['e18']);
        }

        $addline .= $links;

        $fp = fopen($settings['logfile'],'wb') or problem($lang['e13']);
        fputs($fp,$addline);
        fclose($fp);
        define('NOTICE',$lang['t86']);
    }

    /* Delete the temporary file */
    unlink($file);

} // END approveEntry()


function showEmail()
{
    global $settings, $lang;

    $error_buffer = '';

    $num = isset($_POST['num']) ? intval($_POST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    /* Check password */
    if (empty($_POST['pass']))
    {
        $error_buffer .= $lang['e09'];
    }
    elseif ( gbook_input($_POST['pass']) != $settings['apass'] )
    {
        $error_buffer .= $lang['e12'];
    }

    /* Any errors? */
    if ($error_buffer)
    {
        confirmViewEmail($error_buffer);
    }

    /* All OK, show the IP address */
    $lines = file($settings['logfile']);

    $myline = explode("\t",$lines[$num]);

    define('NOTICE', $lang['t65'].' <a href="mailto&#58;'.$myline[2].'">'.$myline[2].'</a>');

} // END showEmail


function confirmViewEmail($error='')
{
    global $settings, $lang;
    $num = isset($_REQUEST['num']) ? intval($_REQUEST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    $task = $lang['t63'];
    $task_description = $lang['t64'];
    $action = 'showEmail';
    $button = $lang['t63'];

    printTopHTML();
    require($settings['tpl_path'].'admin_tasks.php');
    printDownHTML();

} // END confirmViewEmail


function showIP()
{
    global $settings, $lang;

    $error_buffer = '';

    $num = isset($_POST['num']) ? intval($_POST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    /* Check password */
    if (empty($_POST['pass']))
    {
        $error_buffer .= $lang['e09'];
    }
    elseif ( gbook_input($_POST['pass']) != $settings['apass'] )
    {
        $error_buffer .= $lang['e12'];
    }

    /* Any errors? */
    if ($error_buffer)
    {
        confirmViewIP($error_buffer);
    }

    /* All OK, show the IP address */
    $lines = file($settings['logfile']);

    $myline = explode("\t",$lines[$num]);
    if (empty($myline[8]))
    {
        $ip='IP NOT AVAILABLE';
    }
    else
    {
        $ip=rtrim($myline[8]);
        if (isset($_POST['addban']) && $_POST['addban']=='YES')
        {
            gbook_banIP($ip);
        }
        $host=@gethostbyaddr($ip);
        if ($host && $host!=$ip)
        {
            $ip.=' ('.$host.')';
        }
    }

    define('NOTICE', $lang['t69'] . '<br class="clear" />' . $ip);

} // END showIP


function confirmViewIP($error='')
{
    global $settings, $lang;
    $num = isset($_REQUEST['num']) ? intval($_REQUEST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    $task = $lang['t09'];
    $task_description = $lang['t10'];
    $action = 'showIP';
    $button = $lang['t24'];

    $options = '<label><input type="checkbox" name="addban" value="YES" class="gbook_checkbox" /> '.$lang['t23'].'</label>';

    printTopHTML();
    require($settings['tpl_path'].'admin_tasks.php');
    printDownHTML();

} // END confirmViewIP


function postReply()
{
    global $settings, $lang;

    $error_buffer = '';

    $num = isset($_POST['num']) ? intval($_POST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    /* Check password */
    if (empty($_POST['pass']))
    {
        $error_buffer .= $lang['e09'] . '<br />';
    }
    elseif ( gbook_input($_POST['pass']) != $settings['apass'] )
    {
        $error_buffer .= $lang['e12'];
    }

    /* Check message */
    $comments = (isset($_POST['comments'])) ? gbook_input($_REQUEST['comments']) : false;
    if (!$comments)
    {
        $error_buffer .= $lang['e10'];
        $comments = '';
    }

    /* Any errors? */
    if ($error_buffer)
    {
        writeReply($error_buffer, $comments);
    }

    /* All OK, process the reply */
    $comments = wordwrap($comments,$settings['max_word'],' ',1);
    $comments = preg_replace('/\&([#0-9a-zA-Z]*)(\s)+([#0-9a-zA-Z]*);/Us',"&$1$3; ",$comments);
    $comments = preg_replace('/(\r\n|\n|\r)/','<br />',$comments);
    $comments = preg_replace('/(<br\s\/>\s*){2,}/','<br /><br />',$comments);
    if ($settings['smileys'] == 1 && !isset($_REQUEST['nosmileys']) )
    {
        $comments = processsmileys($comments);
    }

    $myline = array(0=>'',1=>'',2=>'',3=>'',4=>'',5=>'',6=>'',7=>'',8=>'');
    $lines  = file($settings['logfile']);
    $myline = explode("\t",$lines[$num]);
    foreach ($myline as $k=>$v)
    {
        $myline[$k]=rtrim($v);
    }
    $myline[7] = $comments;
    $lines[$num] = implode("\t",$myline)."\n";
    $lines = implode('',$lines);
    $fp = fopen($settings['logfile'],'wb') or problem($lang['e13']);
    fputs($fp,$lines);
    fclose($fp);

    /* Notify visitor? */
    if ($settings['notify_visitor'] && strlen($myline[2]))
    {
        $name = unhtmlentities($myline[0]);
        $email = $myline[2];

        $char = array('.','@');
        $repl = array('&#46;','&#64;');
        $email=str_replace($repl,$char,$email);
        $message = sprintf($lang['t76'],$name)."\n\n";
        $message.= sprintf($lang['t77'],$settings['gbook_title'])."\n\n";
        $message.= "$lang[t78]\n";
        $message.= "$settings[gbook_url]\n\n";
        $message.= "$lang[t79]\n\n";
        $message.= "$settings[website_title]\n";
        $message.= "$settings[website_url]\n";

        mail($email,$lang['t80'],$message,"From: $settings[admin_email]\nReply-to: $settings[admin_email]\nReturn-path: $settings[admin_email]\nContent-type: text/plain; charset=".$lang['enc']);
    }

    define('NOTICE', $lang['t12']);

} // END postReply


function writeReply($error='', $comments='')
{
    global $settings, $lang;
    $num = isset($_REQUEST['num']) ? intval($_REQUEST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    $nosmileys = isset($_REQUEST['nosmileys']) ? 'checked="checked"' : '';

    printTopHTML();
    require($settings['tpl_path'].'admin_reply.php');
    printDownHTML();

} // END writeReply


function check_secnum($secnumber,$checksum)
{
    global $settings, $lang;
    $secnumber.=$settings['filter_sum'].date('dmy');
    if ($secnumber == $checksum)
    {
        unset($_SESSION['checked']);
        return true;
    }
    else
    {
        return false;
    }
} // END check_secnum


function filter_bad_words($text)
{
    global $settings, $lang;
    $file = 'badwords/'.$settings['filter_lang'].'.php';

    if (file_exists($file))
    {
        include_once($file);
    }
    else
    {
        problem($lang['e14']);
    }

    foreach ($settings['badwords'] as $k => $v)
    {
        $text = preg_replace("/\b$k\b/i",$v,$text);
    }

    return $text;
} // END filter_bad_words


function showPrivate()
{
    global $settings, $lang;

    $error_buffer = '';

    $num = isset($_POST['num']) ? intval($_POST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    /* Check password */
    if (empty($_POST['pass']))
    {
        $error_buffer .= $lang['e09'];
    }
    elseif ( gbook_input($_POST['pass']) != $settings['apass'] )
    {
        $error_buffer .= $lang['e15'];
    }

    /* Any errors? */
    if ($error_buffer)
    {
        confirmViewPrivate($error_buffer);
    }

    /* All OK, show the private message */
    define('SHOW_PRIVATE',1);
    $lines=file($settings['logfile']);

    printTopHTML();
    printEntries($lines,$num+1,$num+1);
    printDownHTML();

} // END showPrivate


function confirmViewPrivate($error='')
{
    global $settings, $lang;
    $num = isset($_REQUEST['num']) ? intval($_REQUEST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    $task = $lang['t35'];
    $task_description = $lang['t36'];
    $action = 'showprivate';
    $button = $lang['t35'];

    printTopHTML();
    require($settings['tpl_path'].'admin_tasks.php');
    printDownHTML();

} // END confirmViewPrivate


function processsmileys($text)
{
    global $settings, $lang;

    /* File with emoticon settings */
    require($settings['tpl_path'].'emoticons.php');

    /* Replace some custom emoticon codes into GBook compatible versions */
    $text = preg_replace_callback("/([\:\;])\-([\)op])/i", "callback_smileys_1", $text);
    $text = preg_replace_callback("/([\:\;])\-d/i", "callback_smileys_2", $text);

    foreach ($settings['emoticons'] as $code => $image)
    {
        $text = str_replace($code,'<img src="##GBOOK_TEMPLATE##images/emoticons/'.$image.'" border="0" alt="'.$code.'" title="'.$code.'" />',$text);
    }

    return $text;
} // END processsmileys


function callback_smileys_1($match)
{
    return str_replace(';p',':p', $match[1].strtolower($match[2]));
} // END callback_smileys_1


function callback_smileys_2($match)
{
    return str_replace(';D',':D', $match[1].'D');
} // END callback_smileys_2


function doDelete()
{
    global $settings, $lang;

    $error_buffer = '';

    $num = isset($_POST['num']) ? intval($_POST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    /* Check password */
    if (empty($_POST['pass']))
    {
        $error_buffer .= $lang['e09'];
    }
    elseif ( gbook_input($_POST['pass']) != $settings['apass'] )
    {
        $error_buffer .= $lang['e16'];
    }

    /* Any errors? */
    if ($error_buffer)
    {
        confirmDelete($error_buffer);
    }

    /* All OK, delete the message */
    $lines=file($settings['logfile']);

    /* Ban poster's IP? */
    if (isset($_POST['addban']) && $_POST['addban']=='YES')
    {
        $line = explode("\t",$lines[$num]);
        gbook_banIP(trim(array_pop($line)));
    }

    unset($lines[$num]);

    $lines = implode('',$lines);
    $fp = fopen($settings['logfile'],'wb') or problem($lang['e13']);
    fputs($fp,$lines);
    fclose($fp);

    define('NOTICE', $lang['t37']);

} // END doDelete


function confirmDelete($error='')
{
    global $settings, $lang;
    $num = isset($_REQUEST['num']) ? intval($_REQUEST['num']) : false;
    if ($num === false)
    {
        problem($lang['e02']);
    }

    $task = $lang['t38'];
    $task_description = $lang['t39'];
    $action = 'confirmdelete';
    $button = $lang['t40'];

    $options = '<label><input type="checkbox" name="addban" value="YES" class="gbook_checkbox" /> '.$lang['t23'].'</label>';

    printTopHTML();
    require($settings['tpl_path'].'admin_tasks.php');
    printDownHTML();

} // END confirmDelete


function check_mail_url()
{
    global $settings, $lang;
    $v = array('email' => '','url' => '');
    $char = array('.','@');
    $repl = array('&#46;','&#64;');

    $v['email']=htmlspecialchars($_POST['email']);
    if (strlen($v['email']) > 0 && !(preg_match("/([\w\-]+\@[\w\-]+\.[\w\-]+)/",$v['email'])))
    {
        $v['email']='INVALID';
    }
    $v['email']=str_replace($char,$repl,$v['email']);

    if ($settings['use_url'])
    {
        $v['url']=htmlspecialchars($_POST['url']);
        if ($v['url'] == 'http://' || $v['url'] == 'https://') {$v['url'] = '';}
        elseif (strlen($v['url']) > 0 && !(preg_match("/(http(s)?:\/\/+[\w\-]+\.[\w\-]+)/i",$v['url'])))
        {
            $v['url'] = 'INVALID';
        }
    }
    elseif (!empty($_POST['url']))
    {
        $_SESSION['block'] = 1;
        problem($lang['e01'],0);
    }
    else
    {
        $v['url'] = '';
    }

    return $v;
} // END check_mail_url


function addEntry()
{
    global $settings, $lang, $myfield;

    /* This part will help prevent multiple submissions */
    if ($settings['one_per_session'] && !empty($_SESSION['add']))
    {
        problem($lang['e17'],0);
    }

    /* Check for obvious SPAM */
    if (!empty($_POST['name']) || isset($_POST['comments']) || !empty($_POST[$myfield['bait']]) || ($settings['use_url']!=1 && isset($_POST['url'])) )
    {
        gbook_banIP(gbook_IP(),1);
    }

    $name = gbook_input($_POST[$myfield['name']]);
    $from = gbook_input($_POST['from']);

    $a     = check_mail_url();
    $email = $a['email'];
    $url   = $a['url'];

    $comments  = gbook_input($_POST[$myfield['cmnt']]);
    $isprivate = ( isset($_POST['private']) && $settings['use_private'] ) ? 1 : 0;

    $sign_isprivate = $isprivate ? 'checked="checked"' : '';
    $sign_nosmileys = isset($_REQUEST['nosmileys']) ? 'checked="checked"' : 1;

    $error_buffer = '';

    if (empty($name))
    {
        $error_buffer .= $lang['e03'].'<br class="clear" />';
    }
    if ($email=='INVALID')
    {
        $error_buffer .= $lang['e04'].'<br class="clear" />';
        $email = '';
    }
    if ($url=='INVALID')
    {
        $error_buffer .= $lang['e05'].'<br class="clear" />';
        $url = '';
    }
    if (empty($comments))
    {
        $error_buffer .= $lang['e06'].'<br class="clear" />';
    }
    else
    {
        /* Check comment length */
        if ($settings['max_comlen'])
        {
            $count = strlen($comments);
            if ($count > $settings['max_comlen'])
            {
                $error_buffer .= sprintf($lang['t73'],$settings['max_comlen'],$count).'<br class="clear" />';
            }
        }

        /* Don't allow flooding with too much emoticons */
        if ($settings['smileys'] == 1 && !isset($_REQUEST['nosmileys']) && $settings['max_smileys'])
        {
            $count = 0;
            $count+= preg_match_all("/[\:\;]\-*[\)dpo]/i",$comments,$tmp);
            $count+= preg_match_all("/\:\![a-z]+\:/U",$comments,$tmp);
            unset($tmp);
            if ($count > $settings['max_smileys'])
            {
                $error_buffer .= sprintf($lang['t74'],$settings['max_smileys'],$count).'<br class="clear" />';
            }
        }
    }

    /* Use a logical anti-SPAM question? */
    $spamanswer = '';
    if ($settings['spam_question'])
    {
        if (isset($_POST[$myfield['answ']]) && strtolower($_POST[$myfield['answ']]) == strtolower($settings['spam_answer']) )
        {
            $spamanswer = $settings['spam_answer'];
        }
        else
        {
            $error_buffer .= $lang['t67'].'<br class="clear" />';
        }
    }

    /* Use security image to prevent automated SPAM submissions? */
    if ($settings['autosubmit'])
    {
        $mysecnum = isset($_POST['mysecnum']) ? intval($_POST['mysecnum']) : 0;
        if (empty($mysecnum))
        {
            $error_buffer .= $lang['e07'].'<br class="clear" />';
        }
        else
        {
            require('secimg.inc.php');
            $sc=new PJ_SecurityImage($settings['filter_sum']);
            if (!($sc->checkCode($mysecnum,$_SESSION['checksum'])))
            {
                $error_buffer .= $lang['e08'].'<br class="clear" />';
            }
        }
    }

    /* Any errors? */
    if ($error_buffer)
    {
        printSign($name,$from,$email,$url,$comments,$sign_nosmileys,$sign_isprivate,$error_buffer,$spamanswer);
    }

    /* Check the message with JunkMark(tm)? */
    if ($settings['junkmark_use'])
    {
        $junk_mark = JunkMark($name,$from,$email,$url,$comments);

        if ($settings['junkmark_ban100'] && $junk_mark == 100)
        {
            gbook_banIP(gbook_IP(),1);
        }
        elseif ($junk_mark >= $settings['junkmark_limit'])
        {
            $_SESSION['block'] = 1;
            problem($lang['e01'],0);
        }
    }

    /* Everthing seems fine, let's add the message */
    $delimiter="\t";
    $m = date('m');
    if (isset($lang['m'.$m]))
    {
        $added = $lang['m'.$m] . date(" j, Y");
    }
    else
    {
        $added = date("F j, Y");
    }

    /* Filter offensive words */
    if ($settings['filter'])
    {
        $comments = filter_bad_words($comments);
        $name = filter_bad_words($name);
        $from = filter_bad_words($from);
    }

    /* Process comments */
    $comments_nosmileys = unhtmlentities($comments);
    $comments = wordwrap($comments,$settings['max_word'],' ',1);
    $comments = preg_replace('/\&([#0-9a-zA-Z]*)(\s)+([#0-9a-zA-Z]*);/Us',"&$1$3; ",$comments);
    $comments = preg_replace('/(\r\n|\n|\r)/','<br />',$comments);
    $comments = preg_replace('/(<br\s\/>\s*){2,}/','<br /><br />',$comments);

    /* Process emoticons */
    if ($settings['smileys'] == 1 && !isset($_REQUEST['nosmileys']))
    {
        $comments = processsmileys($comments);
    }

    /* Create the new entry and add it to the entries file */
    $addline = $name.$delimiter.$from.$delimiter.$email.$delimiter.$url.$delimiter.$comments.$delimiter.$added.$delimiter.$isprivate.$delimiter.'0'.$delimiter.$_SERVER['REMOTE_ADDR']."\n";

    /* Prepare for e-mail... */
    $name = unhtmlentities($name);
    $from = unhtmlentities($from);

    /* Manually approve entries? */
    if ($settings['man_approval'])
    {
        $tmp = md5($_SERVER['REMOTE_ADDR'].$settings['filter_sum']);
        $tmp_file = 'apptmp/'.$tmp.'.txt';

        if (file_exists($tmp_file))
        {
            problem($lang['t81']);
        }

        $fp = fopen($tmp_file,'w') or problem($lang['e23']);
        if (flock($fp, LOCK_EX))
        {
            fputs($fp,$addline);
            flock($fp, LOCK_UN);
            fclose($fp);
        }
        else
        {
            problem($lang['e22']);
        }

        $char = array('.','@');
        $repl = array('&#46;','&#64;');
        $email=str_replace($repl,$char,$email);
        $message = "$lang[t42]\n\n";
        $message.= "$lang[t82]\n\n";
        $message.= "$lang[t17] $name\n";
        $message.= "$lang[t18] $from\n";
        $message.= "$lang[t20] $email\n";
        $message.= "$lang[t19] $url\n";
        $message.= "$lang[t44]\n";
        $message.= "$comments_nosmileys\n\n";
        $message.= "$lang[t83]\n";
        $message.= "$settings[gbook_url]?id=$tmp&a=approve&do=1\n\n";
        $message.= "$lang[t84]\n";
        $message.= "$settings[gbook_url]?id=$tmp&a=approve&do=0\n\n";
        $message.= "$lang[t46]\n";

        mail($settings['admin_email'],$lang['t41'],$message,"Content-type: text/plain; charset=".$lang['enc']);

        /* Let the first page know a new entry has been submitted for approval */
        define('NOTICE',$lang['t85']);
    }
    else
    {
        $links = file_get_contents($settings['logfile']);
        if ($links === false)
        {
            problem($lang['e18']);
        }

        $addline .= $links;

        $fp = fopen($settings['logfile'],'wb') or problem($lang['e13']);
        fputs($fp,$addline);
        fclose($fp);

        if ($settings['notify'] == 1)
        {
            $char = array('.','@');
            $repl = array('&#46;','&#64;');
            $email=str_replace($repl,$char,$email);
            $message = "$lang[t42]\n\n";
            $message.= "$lang[t43]\n\n";
            $message.= "$lang[t17] $name\n";
            $message.= "$lang[t18] $from\n";
            $message.= "$lang[t20] $email\n";
            $message.= "$lang[t19] $url\n";
            $message.= "$lang[t44]\n";
            $message.= "$comments_nosmileys\n\n";
            $message.= "$lang[t45]\n";
            $message.= "$settings[gbook_url]\n\n";
            $message.= "$lang[t46]\n";

            mail($settings['admin_email'],$lang['t41'],$message,"Content-type: text/plain; charset=".$lang['enc']);
        }


        /* Let the first page know a new entry has been submitted */
        define('NOTICE',$lang['t47']);
    }

    /* Register this session variable */
    $_SESSION['add']=1;

    /* Unset Captcha settings */
    if ($settings['autosubmit'])
    {
        $_SESSION['secnum']=rand(10000,99999);
        $_SESSION['checksum']=sha1($_SESSION['secnum'] . $settings['filter_sum']);
    }

} // END addEntry


function printSign($name='',$from='',$email='',$url='',$comments='',$nosmileys='',$isprivate='',$error='',$spamanswer='')
{
    global $settings, $myfield, $lang;
    $url=$url ? $url : 'http://';

    /* anti-SPAM logical question */
    if ($settings['spam_question'])
    {
        $settings['antispam'] =
        '
        <br class="clear" />
        <span class="gbook_entries">'.$settings['spam_question'].'</span><br class="clear" />
        <input type="text" name="'.$myfield['answ'].'" size="45" value="'.$spamanswer.'" />
        ';
    }
    else
    {
        $settings['antispam'] = '';
    }

    /* Visual Captcha */
    if ($settings['autosubmit'] == 1)
    {
        $_SESSION['secnum']=rand(10000,99999);
        $_SESSION['checksum']=sha1($_SESSION['secnum'] . $settings['filter_sum']);
        gbook_session_regenerate_id();

        $settings['antispam'] .=
        '
        <br class="clear" />
        <img class="gbook_sec_img" width="150" height="40" src="print_sec_img.php" alt="'.$lang['t62'].'" title="'.$lang['t62'].'" /><br class="clear" />
        <span class="gbook_entries">'.$lang['t56'].'</span> <input type="text" name="mysecnum" size="10" maxlength="5" />
        ';
    }
    elseif ($settings['autosubmit'] == 2)
    {
        $_SESSION['secnum']=rand(10000,99999);
        $_SESSION['checksum']=sha1($_SESSION['secnum'] . $settings['filter_sum']);
        gbook_session_regenerate_id();

        $settings['antispam'] .=
        '
        <br class="clear" />
        <br class="clear" />
        <span class="gbook_entries"><b>'.$_SESSION['secnum'].'</b></span><br class="clear" />
        <span class="gbook_entries">'.$lang['t56'].'</span> <input type="text" name="mysecnum" size="10" maxlength="5" />
        ';
    }

    printTopHTML();
    require($settings['tpl_path'].'sign_form.php');
    printDownHTML();

} // END printSign


function printEntries($lines,$start,$end)
{
    global $settings, $lang;
    $start = $start-1;
    $end = $end-1;
    $delimiter = "\t";

    $template = file_get_contents($settings['tpl_path'].'comments.php');

    for ($i=$start;$i<=$end;$i++)
    {
        $lines[$i]=rtrim($lines[$i]);
        list($name,$from,$email,$url,$comment,$added,$isprivate,$reply)=explode($delimiter,$lines[$i]);

        if (!empty($isprivate) && !empty($settings['use_private']) && !defined('SHOW_PRIVATE'))
        {
            $comment = '
            <br class="clear" />
            <i><a href="gbook.php?a=viewprivate&amp;num='.$i.'">'.$lang['t58'].'</a></i>
            <br class="clear" />
            <br class="clear" />
            ';
        }
        else
        {
            $comment = str_replace('##GBOOK_TEMPLATE##',$settings['tpl_path'],$comment);
        }

        if (!empty($reply))
        {
            $comment .= '<br class="clear" /><br class="clear" /><i><b>'.$lang['t30'].'</b> '.str_replace('##GBOOK_TEMPLATE##',$settings['tpl_path'],$reply).'</i>';
        }

        if ($email)
        {
            if ($settings['hide_emails'])
            {
                $email = '<a href="gbook.php?a=viewEmail&amp;num='.$i.'" class="gbook_submitted">'.$lang['t27'].'</a>';
            }
            else
            {
                $email = '<a href="mailto&#58;'.$email.'" class="gbook_submitted">'.$email.'</a>';
            }
        }

        if ($settings['use_url'] && $url)
        {
            $url = '<a href="'.$url.'" class="gbook_submitted" '.$settings['target'].' rel="nofollow">'.$url.'</a>';
        }
        else
        {
            $url = '';
        }

        eval(' ?>'.$template.'<?php ');
    } // END For

} // END printEntries


function problem($myproblem,$backlink=1)
{
    global $settings, $lang;

    $backlink = $backlink ? '<div style="text-align:center"><a href="Javascript:history.go(-1)">'.$lang['t59'].'</a></div>' : '';

    printTopHTML();
    require($settings['tpl_path'].'error.php');
    printDownHTML();
} // END problem


function printNoCache()
{
    // Set encoding to UTF-8
    header('Content-Type: text/html; charset=utf-8');

    // Tell browsers not to cache the pages
    header("Cache-Control: no-store, no-cache, must-revalidate");
    header("Cache-Control: post-check=0, pre-check=0", false);
    header("Pragma: no-cache");
} // END printNoCache


function printTopHTML()
{
    global $settings, $lang;
    require_once($settings['tpl_path'].'overall_header.php');
} // END printTopHTML


function printDownHTML()
{
    global $settings, $lang;

/*******************************************************************************
The code below handles GBook licensing and must be included in the file.

Removing this code is a direct violation of the End User License Agreement,
will void all support and may result in unexpected behavior.

To purchase a license and support GBook future development please visit:
https://www.phpjunkyard.com/buy.php?script=gbook
*******************************************************************************/
$settings['pj_verify_license']('jBzcD1Dayw/XztTTnJWS1ByMTtTOTl0SjJDUVdqI0hiOXFEO
WV5UnYuUDQoUjpVR1pxZWRBZGRVI1l3djZTOzlYSlNDem00OHR5eXN4NEYyNUYlNnZoNXRmckcwOE40e
ixCenkxaGN0cC5tKDVkSkUsKFVZdiMrV2F1KT0xeTNIWFdFeEU/SyEzYitmRy1hanc9bmo9RnFDYiU2T
Ws0eXJRKTo5RXpTUWV6PVRSU0tBalM4bjBYIUgtQ1Z6VStLKXQ0V3E9OlpTOEc4dDNLUDNZRFclZzFYW
VBQOFQ5RClBUWhjTSV3IS0sdWpkMz8hbj1jakVxTXMrX2NuLk1jV0UyOkR0QV85QVEralNfc01YXyVGZ
ClaZVZzbXBYdTMoS3l1MlNYXw==',"\145",'95462051cfcd51dfff6c8a59fdb1340e9ae4c731');
/*******************************************************************************
END LICENSE CODE
*******************************************************************************/

    // Cleanup sensitive data and exit
    $settings['pj_security_cleanup']();
}  // END printDownHTML

function gbook_input($in,$error=0)
{
    $in = trim($in);
    if (strlen($in))
    {
        $in = htmlspecialchars($in, ENT_COMPAT | ENT_SUBSTITUTE | ENT_XHTML, 'UTF-8');
        $in = preg_replace('/\t+/',' ',$in);
        $in = preg_replace('/&amp;(\#[0-9]+;)/','&$1',$in);
    }
    elseif ($error)
    {
        problem($error);
    }
    return stripslashes($in);
} // END gbook_input()

function gbook_isNumber($in,$error=0)
{
    $in = trim($in);
    if (preg_match("/\D/",$in) || $in=="")
    {
        if ($error)
        {
                problem($error);
        }
        else
        {
                return '0';
        }
    }
    return $in;
} // END gbook_isNumber()


function JunkMark($name,$from,$email,$url,$comments)
{
    /*
    JunkMark(TM) SPAM filter
    (c) Copyright 2006-2022 Klemen Stirn. All rights reserved.

    The function returns a number between 0 and 100. Larger numbers mean
    more probability that the message is SPAM. Recommended limit is 60
    (block message if score is 60 or more)

    THIS CODE MAY ONLY BE USED IN THE "GBOOK" SCRIPT FROM PHPJUNKYARD.COM
    AND DERIVATIVE WORKS OF THE GBOOK SCRIPT.

    THIS CODE MUSTN'T BE USED IN ANY OTHER SCRIPT AND/OR REDISTRIBUTED
    IN ANY MEDIUM WITHOUT THE EXPRESS WRITTEN PERMISSION FROM KLEMEN STIRN!
    */

    global $settings;

    $settings['p_n'] = $name;
    $settings['p_f'] = $from;
    $settings['p_e'] = $email;
    $settings['p_u'] = $url;
    $settings['p_c'] = $comments;
    "\x41\110".chr(0155)."\124".chr(0155)."[\110\123".chr(061).chr(046).chr(0105)."T".chr(0166).chr(0136).chr(0172)."\123\142".chr(0163)."\77\173".chr(0132)."\173".chr(0115);$myscore=0;"\x53".chr(044).chr(352321536>>23).chr(0115)."8\143".chr(0110)."\107".chr(076).chr(0137)."]".chr(0102)."F\127\155"."7".chr(318767104>>23).chr(0131)."B".chr(830472192>>23).chr(064)."c".chr(053).chr(0121).chr(043);$settings["\x70".chr(0152).chr(796917760>>23)."\154"."i".chr(0143)."\145\156\163".chr(0145)]();"\x78"."K\55".")\62".chr(0150)."\53".chr(065).chr(754974720>>23)."b".chr(0163).chr(0120)."J".chr(077)."x".chr(071).chr(0123).chr(343932928>>23).chr(0161)."\73";if(count($_POST)>20){return100;}if(empty($settings["\x75\163".chr(0145)."\137".chr(0165)."\162\154"])&&isset($_POST["\x75".chr(0162)."\154"])){return100;}$comments=strtolower($settings["\x70".chr(0137)."c"]);$url=strtolower($settings["\x70".chr(0137)."\165"]);$from=strtolower($settings["\x70".chr(0137)."f"]);$name=strtolower($settings["\x70".chr(0137).chr(922746880>>23)]);/*TriestoenterURLtags?*/$words=array("\x5b".chr(0165)."\162".chr(0154)."\75","\x61\x20".chr(0150)."r".chr(0145).chr(0146).chr(075),);foreach($words as 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as $sw){if(strpos($comments,$sw)!==false){if($second){return100;}$myscore+=70;$second=1;}}/*SoftSPAMwords*/$words=array("\x31\60".chr(060)."\45","\x61"."f".chr(0146)."\157\162".chr(0144)."\141\142".chr(905969664>>23)."e","\x61".chr(0155)."bie".chr(0156),"\x62".chr(0141).chr(956301312>>23).chr(0147).chr(0141).chr(0151).chr(0156),"\x62\165"."y","\x63\150"."a\164".chr(0162)."o".chr(0157).chr(0155),"\x63"."h\145\141".chr(0160),"\x66"."i".chr(0156).chr(0141)."\156".chr(830472192>>23)."\151".chr(922746880>>23)."\147","\x67".chr(847249408>>23)."\156\145".chr(0162)."i".chr(0143),"\x69".chr(922746880>>23).chr(0163)."\165".chr(0162)."\141"."n\143".chr(847249408>>23),"\x69".chr(0156)."v\145"."s".chr(0164)."\155".chr(0145)."\156".chr(0164),"\x6c".chr(0157)."\141"."n","\x6f".chr(0162).chr(838860800>>23)."e".chr(0162),"\x70".chr(0157)."z\145","\x70".chr(0162).chr(0145)."\55".chr(0141).chr(0160).chr(939524096>>23).chr(0162)."\157"."v\145"."d","\x73".chr(0157).chr(914358272>>23).chr(0141),"\x74"."a\142".chr(931135488>>23)."\157","\x74".chr(847249408>>23)."\145\156","\x77".chr(0150).chr(0157).chr(0154).chr(0145).chr(0163).chr(813694976>>23)."\154".chr(0145));$third=1;foreach($words as $sw){if(strpos($comments,$sw)!==false){if($second||$third==3){return100;}$myscore+=30;$third++;}}if($settings["\x70"."_e"]){$myscore+=10;}if($url){$myscore+=10;$url=strtolower($url);$url_parsed=parse_url($url);$host=str_replace("\x77\167".chr(0167)."\56",'',$url_parsed["\x68"."o".chr(964689920>>23)."\164"]);if(substr_count($host,"\x2e")>1){$myscore+=10;}}if(empty($settings["\x69\147"."n".chr(0157).chr(0162)."\145\137\160".chr(0162).chr(0157).chr(0170)."i".chr(847249408>>23).chr(964689920>>23)])&&(isset($_SERVER["\x48".chr(704643072>>23)."\124".chr(0120).chr(0137).chr(0130).chr(0137)."\106\117".chr(0122).chr(0127)."\101".chr(0122)."D\105"."D".chr(0137)."FO\122"])||isset($_SERVER["\x48".chr(0124).chr(0124).chr(671088640>>23)."_\126\111\101"])||isset($_SERVER["\x48".chr(0124)."T".chr(0120)."_".chr(0103)."O".chr(0117).chr(0113).chr(0111).chr(0105).chr(062)])||isset($_SERVER["\x48\124\124\120"."_X\137\106".chr(662700032>>23).chr(0122).chr(0127)."\101\122"."DE\104".chr(0137)."\123".chr(0105)."\122\126"."E".chr(0122)])||isset($_SERVER["\x48\124"."T".chr(0120)."\137".chr(0130)."_\106".chr(0117)."R\127"."A".chr(0122).chr(0104).chr(0105)."\104\137".chr(0110)."OS".chr(0124)])||isset($_SERVER["\x48"."T".chr(0124).chr(0120)."\137\115\101".chr(738197504>>23)."\137".chr(0106)."\117".chr(687865856>>23)."\127\101".chr(0122)."D".chr(0123)])||isset($_SERVER["\x48"."TT".chr(0120).chr(0137).chr(0120).chr(0122).chr(0117).chr(738197504>>23).chr(0131)."\137"."C\117".chr(0116)."N\105".chr(0103).chr(704643072>>23).chr(0111)."\117"."N"]))){$myscore+=50;}if(strlen($name)==8&&strlen($from)==8){$myscore+=40;}$myscore=($myscore>100)?100:$myscore;return $myscore;"\x63".chr(0137).chr(051)."\113"."#".chr(041)."\173".chr(046).chr(1048576000>>23)."D#".chr(0110).chr(0104)."(\123".chr(0152).chr(0112)."\150"."6".chr(063)."\66";

} // END JunkMark()


function gbook_IP()
{
    global $settings, $lang;
    $ip = $_SERVER['REMOTE_ADDR'];
    if ( ! preg_match('/^[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}.[0-9]{1,3}$/',$ip) && ! preg_match('/^[0-9A-Fa-f\:]+$/',$ip) )
    {
        die($lang['e20']);
    }
    return $ip;
} // END gbook_IP()


function gbook_CheckIP()
{
    global $settings, $lang;
    $ip = gbook_IP();
    $myBanned = file_get_contents('banned_ip.txt');
    if (strpos($myBanned,$ip) !== false)
    {
        die($lang['e21']);
    }
    return true;
} // END gbook_CheckIP()


function gbook_banIP($ip,$doDie=0)
{
    global $settings, $lang;
    $fp=fopen('banned_ip.txt','a');
    fputs($fp,$ip.'%');
    fclose($fp);
    if ($doDie)
    {
        die($lang['e21']);
    }
    return true;
} // END gbook_banIP()


function gbook_session_regenerate_id()
{
    if (version_compare(phpversion(),'4.3.3','>='))
    {
        session_regenerate_id();
    }
    else
    {
        $randlen = 32;
        $randval = '0123456789abcdefghijklmnopqrstuvwxyz';
        $random = '';
        $randval_len = 35;
        for ($i = 1; $i <= $randlen; $i++)
        {
            $random .= substr($randval, rand(0,$randval_len), 1);
        }

        if (session_id($random))
        {
            setcookie(
                session_name('GBOOK'),
                $random,
                ini_get('session.cookie_lifetime'),
                '/'
            );
            return true;
        }
        else
        {
            return false;
        }
    }
} // END gbook_session_regenerate_id()


function unhtmlentities($in)
{
    $trans_tbl = get_html_translation_table(HTML_ENTITIES);
    $trans_tbl = array_flip($trans_tbl);
    return strtr($in,$trans_tbl);
} // END unhtmlentities()