<?php
/*
* Enano - an open-source CMS capable of wiki functions, Drupal-like sidebar blocks, and everything in between
* Version 1.0 (Banshee)
* Copyright (C) 2006-2007 Dan Fuhry
*
* This program is Free Software; you can redistribute and/or modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied
* warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for details.
*/
/**
* Fetch a value from the site configuration.
* @param string The identifier of the value ("site_name" etc.)
* @return string Configuration value, or bool(false) if the value is not set
*/
function getConfig($n)
{
global $enano_config;
if ( isset( $enano_config[ $n ] ) )
{
return $enano_config[$n];
}
else
{
return false;
}
}
/**
* Update or change a configuration value.
* @param string The identifier of the value ("site_name" etc.)
* @param string The new value
* @return null
*/
function setConfig($n, $v)
{
global $enano_config, $db;
$enano_config[$n] = $v;
$v = $db->escape($v);
$e = $db->sql_query('DELETE FROM '.table_prefix.'config WHERE config_name=\''.$n.'\';');
if ( !$e )
{
$db->_die('Error during generic setConfig() call row deletion.');
}
$e = $db->sql_query('INSERT INTO '.table_prefix.'config(config_name, config_value) VALUES(\''.$n.'\', \''.$v.'\')');
if ( !$e )
{
$db->_die('Error during generic setConfig() call row insertion.');
}
}
/**
* Create a URI for an internal link.
* @param string The full identifier of the page to link to (Special:Administration)
* @param string The GET query string to append
* @param bool If true, perform htmlspecialchars() on the return value to make it HTML-safe
* @return string
*/
function makeUrl($t, $query = false, $escape = false)
{
global $db, $session, $paths, $template, $plugins; // Common objects
$flags = '';
$sep = urlSeparator;
if ( isset($_GET['printable'] ) )
{
$flags .= $sep . 'printable=yes';
$sep = '&';
}
if ( isset($_GET['theme'] ) )
{
$flags .= $sep . 'theme='.$session->theme;
$sep = '&';
}
if ( isset($_GET['style'] ) ) {
$flags .= $sep . 'style='.$session->style;
$sep = '&';
}
$url = $session->append_sid(contentPath.$t.$flags);
if($query)
{
$sep = strstr($url, '?') ? '&' : '?';
$url = $url . $sep . $query;
}
return ($escape) ? htmlspecialchars($url) : $url;
}
/**
* Create a URI for an internal link, and be namespace-friendly. Watch out for this one because it's different from most other Enano functions, in that the namespace is the first parameter.
* @param string The namespace ID
* @param string The page ID
* @param string The GET query string to append
* @param bool If true, perform htmlspecialchars() on the return value to make it HTML-safe
* @return string
*/
function makeUrlNS($n, $t, $query = false, $escape = false)
{
global $db, $session, $paths, $template, $plugins; // Common objects
$flags = '';
if(defined('ENANO_BASE_CLASSES_INITIALIZED'))
{
$sep = urlSeparator;
}
else
{
$sep = (strstr($_SERVER['REQUEST_URI'], '?')) ? '&' : '?';
}
if ( isset( $_GET['printable'] ) ) {
$flags .= $sep . 'printable';
$sep = '&';
}
if ( isset( $_GET['theme'] ) )
{
$flags .= $sep . 'theme='.$session->theme;
$sep = '&';
}
if ( isset( $_GET['style'] ) )
{
$flags .= $sep . 'style='.$session->style;
$sep = '&';
}
if(defined('ENANO_BASE_CLASSES_INITIALIZED'))
{
$url = contentPath . $paths->nslist[$n] . $t . $flags;
}
else
{
// If the path manager hasn't been initted yet, take an educated guess at what the URI should be
$url = contentPath . $n . ':' . $t . $flags;
}
if($query)
{
if(strstr($url, '?'))
{
$sep = '&';
}
else
{
$sep = '?';
}
$url = $url . $sep . $query . $flags;
}
if(defined('ENANO_BASE_CLASSES_INITIALIZED'))
{
$url = $session->append_sid($url);
}
return ($escape) ? htmlspecialchars($url) : $url;
}
/**
* Create a URI for an internal link, be namespace-friendly, and add http://hostname/scriptpath to the beginning if possible. Watch out for this one because it's different from most other Enano functions, in that the namespace is the first parameter.
* @param string The namespace ID
* @param string The page ID
* @param string The GET query string to append
* @param bool If true, perform htmlspecialchars() on the return value to make it HTML-safe
* @return string
*/
function makeUrlComplete($n, $t, $query = false, $escape = false)
{
global $db, $session, $paths, $template, $plugins; // Common objects
$flags = '';
if(defined('ENANO_BASE_CLASSES_INITIALIZED'))
{
$sep = urlSeparator;
}
else
{
$sep = (strstr($_SERVER['REQUEST_URI'], '?')) ? '&' : '?';
}
if ( isset( $_GET['printable'] ) ) {
$flags .= $sep . 'printable';
$sep = '&';
}
if ( isset( $_GET['theme'] ) )
{
$flags .= $sep . 'theme='.$session->theme;
$sep = '&';
}
if ( isset( $_GET['style'] ) )
{
$flags .= $sep . 'style='.$session->style;
$sep = '&';
}
if(defined('ENANO_BASE_CLASSES_INITIALIZED'))
{
$url = $session->append_sid(contentPath . $paths->nslist[$n] . $t . $flags);
}
else
{
// If the path manager hasn't been initted yet, take an educated guess at what the URI should be
$url = contentPath . $n . ':' . $t . $flags;
}
if($query)
{
if(strstr($url, '?')) $sep = '&';
else $sep = '?';
$url = $url . $sep . $query . $flags;
}
$baseprot = 'http' . ( isset($_SERVER['HTTPS']) ? 's' : '' ) . '://' . $_SERVER['HTTP_HOST'];
$url = $baseprot . $url;
return ($escape) ? htmlspecialchars($url) : $url;
}
/**
* Redirect the user to the specified URL.
* @param string $url The URL, either relative or absolute.
* @param string $title The title of the message
* @param string $message A short message to show to the user
* @param string $timeout Timeout, in seconds, to delay the redirect. Defaults to 3.
*/
function redirect($url, $title = 'Redirecting...', $message = 'Please wait while you are redirected.', $timeout = 3)
{
global $db, $session, $paths, $template, $plugins; // Common objects
if ( $timeout == 0 )
{
header('Location: ' . $url);
header('HTTP/1.1 307 Temporary Redirect');
}
$template->add_header('<meta http-equiv="refresh" content="' . $timeout . '; url=' . str_replace('"', '\\"', $url) . '" />');
$template->add_header('<script type="text/javascript">
function __r() {
// FUNCTION AUTOMATICALLY GENERATED
window.location="' . str_replace('"', '\\"', $url) . '";
}
setTimeout(\'__r();\', ' . $timeout . '000);
</script>
');
$template->tpl_strings['PAGE_NAME'] = $title;
$template->header(true);
echo '<p>' . $message . '</p><p>If you are not redirected within ' . ( $timeout + 1 ) . ' seconds, <a href="' . str_replace('"', '\\"', $url) . '">please click here</a>.</p>';
$template->footer(true);
$db->close();
exit(0);
}
// Removed wikiFormat() from here, replaced with RenderMan::render
/**
* Tell me if the page exists or not.
* @param string the full page ID (Special:Administration) of the page to check for
* @return bool True if the page exists, false otherwise
*/
function isPage($p) {
global $db, $session, $paths, $template, $plugins; // Common objects
// Try the easy way first ;-)
if ( isset( $paths->pages[ $p ] ) )
{
return true;
}
// Special case for Special, Template, and Admin pages that can't have slashes in their URIs
$ns_test = RenderMan::strToPageID( $p );
if($ns_test[1] != 'Special' && $ns_test[1] != 'Template' && $ns_test[1] != 'Admin')
{
return false;
}
$particles = explode('/', $p);
if ( isset ( $paths->pages[ $particles[ 0 ] ] ) )
{
return true;
}
else
{
return false;
}
}
function arrayItemUp($arr, $keyname) {
$keylist = array_keys($arr);
$keyflop = array_flip($keylist);
$idx = $keyflop[$keyname];
$idxm = $idx - 1;
$temp = $arr[$keylist[$idxm]];
if($arr[$keylist[0]] == $arr[$keyname]) return $arr;
$arr[$keylist[$idxm]] = $arr[$keylist[$idx]];
$arr[$keylist[$idx]] = $temp;
return $arr;
}
function arrayItemDown($arr, $keyname) {
$keylist = array_keys($arr);
$keyflop = array_flip($keylist);
$idx = $keyflop[$keyname];
$idxm = $idx + 1;
$temp = $arr[$keylist[$idxm]];
$sz = sizeof($arr); $sz--;
if($arr[$keylist[$sz]] == $arr[$keyname]) return $arr;
$arr[$keylist[$idxm]] = $arr[$keylist[$idx]];
$arr[$keylist[$idx]] = $temp;
return $arr;
}
function arrayItemTop($arr, $keyname) {
$keylist = array_keys($arr);
$keyflop = array_flip($keylist);
$idx = $keyflop[$keyname];
while( $orig != $arr[$keylist[0]] ) {
// echo 'Keyname: '.$keylist[$idx] . '<br />'; flush(); ob_flush(); // Debugger
if($idx < 0) return $arr;
if($keylist[$idx] == '' || $keylist[$idx] < 0 || !$keylist[$idx]) {
/* echo 'Infinite loop caught in arrayItemTop(<br /><pre>';
print_r($arr);
echo '</pre><br />, '.$keyname.');<br /><br />EnanoCMS: Critical error during function call, exiting to prevent excessive server load.';
exit; */
return $arr;
}
$arr = arrayItemUp($arr, $keylist[$idx]);
$idx--;
}
return $arr;
}
function arrayItemBottom($arr, $keyname) {
$keylist = array_keys($arr);
$keyflop = array_flip($keylist);
$idx = $keyflop[$keyname];
$sz = sizeof($arr); $sz--;
while( $orig != $arr[$keylist[$sz]] ) {
// echo 'Keyname: '.$keylist[$idx] . '<br />'; flush(); ob_flush(); // Debugger
if($idx > $sz) return $arr;
if($keylist[$idx] == '' || $keylist[$idx] < 0 || !$keylist[$idx]) {
echo 'Infinite loop caught in arrayItemBottom(<br /><pre>';
print_r($arr);
echo '</pre><br />, '.$keyname.');<br /><br />EnanoCMS: Critical error during function call, exiting to prevent excessive server load.';
exit;
}
$arr = arrayItemDown($arr, $keylist[$idx]);
$idx++;
}
return $arr;
}
// Convert IP address to hex string
// Input: 127.0.0.1 (string)
// Output: 0x7f000001 (string)
// Updated 12/8/06 to work with PHP4 and not use eval() (blech)
function ip2hex($ip) {
if ( preg_match('/^([0-9a-f:]+)$/', $ip) )
{
// this is an ipv6 address
return str_replace(':', '', $ip);
}
$nums = explode('.', $ip);
if(sizeof($nums) != 4) return false;
$str = '0x';
foreach($nums as $n)
{
$str .= (string)dechex($n);
}
return $str;
}
// Convert DWord to IP address
// Input: 0x7f000001
// Output: 127.0.0.1
// Updated 12/8/06 to work with PHP4 and not use eval() (blech)
function hex2ip($in) {
if(substr($in, 0, 2) == '0x') $ip = substr($in, 2, 8);
else $ip = substr($in, 0, 8);
$octets = enano_str_split($ip, 2);
$str = '';
$newoct = Array();
foreach($octets as $o)
{
$o = (int)hexdec($o);
$newoct[] = $o;
}
return implode('.', $newoct);
}
// Function strip_php moved to RenderMan class
function die_semicritical($t, $p)
{
global $db, $session, $paths, $template, $plugins; // Common objects
$db->close();
if ( ob_get_status() )
ob_end_clean();
dc_here('functions: <span style="color: red">calling die_semicritical</span>');
$tpl = new template_nodb();
$tpl->load_theme('oxygen', 'bleu');
$tpl->tpl_strings['SITE_NAME'] = getConfig('site_name');
$tpl->tpl_strings['SITE_DESC'] = getConfig('site_desc');
$tpl->tpl_strings['COPYRIGHT'] = getConfig('copyright_notice');
$tpl->tpl_strings['PAGE_NAME'] = $t;
$tpl->header();
echo $p;
$tpl->footer();
exit;
}
function die_friendly($t, $p)
{
global $db, $session, $paths, $template, $plugins; // Common objects
if ( ob_get_status() )
ob_end_clean();
dc_here('functions: <span style="color: red">calling die_friendly</span>');
$paths->cpage['name'] = $t;
$template->tpl_strings['PAGE_NAME'] = $t;
$template->header();
echo $p;
$template->footer();
$db->close();
exit;
}
function grinding_halt($t, $p)
{
global $db, $session, $paths, $template, $plugins; // Common objects
$db->close();
if ( ob_get_status() )
ob_end_clean();
dc_here('functions: <span style="color: red">calling grinding_halt</span>');
$tpl = new template_nodb();
$tpl->load_theme('oxygen', 'bleu');
$tpl->tpl_strings['SITE_NAME'] = 'Critical error';
$tpl->tpl_strings['SITE_DESC'] = 'This website is experiencing a serious error and cannot load.';
$tpl->tpl_strings['COPYRIGHT'] = 'Unable to retrieve copyright information';
$tpl->tpl_strings['PAGE_NAME'] = $t;
$tpl->header();
echo $p;
$tpl->footer();
exit;
}
function show_category_info() {
global $db, $session, $paths, $template, $plugins; // Common objects
dc_here('functions: showing category info');
if($template->no_headers && !strpos($_SERVER['REQUEST_URI'], 'ajax.php')) return '';
if($paths->namespace=='Category')
{
$q = $db->sql_query('SELECT page_id,namespace FROM '.table_prefix.'categories WHERE category_id=\''.$paths->cpage['urlname_nons'].'\' AND namespace=\'Category\' ORDER BY page_id;');
if(!$q) $db->_die('The category information could not be selected.');
$ticker = -1;
echo '<h3>Subcategories</h3>';
if($db->numrows() < 1) echo '<p>There are no subcategories in this category.</p>';
echo '<table border="0" cellspacing="1" cellpadding="4">';
while($row = $db->fetchrow())
{
$ticker++;if($ticker==3) $ticker=0;
if($ticker==0) echo '<tr>';
echo '<td style="width: 200px;"><a href="'.makeUrlNS($row['namespace'], $row['page_id']).'">'.$paths->pages[$paths->nslist[$row['namespace']].$row['page_id']]['name'].'</a></td>';
if($ticker==2) echo '</tr>';
}
$db->free_result();
if($ticker) echo '</tr>';
echo '</table>';
$q = $db->sql_query('SELECT page_id,namespace FROM '.table_prefix.'categories WHERE category_id=\''.$paths->cpage['urlname_nons'].'\' AND namespace!=\'Category\' ORDER BY page_id;');
if(!$q) $db->_die('The category information could not be selected.');
$ticker = -1;
echo '<h3>Pages</h3>';
if($db->numrows() < 1) echo '<p>There are no pages in this category.</p>';
echo '<table border="0" cellspacing="1" cellpadding="4">';
while($row = $db->fetchrow())
{
$ticker++;if($ticker==3) $ticker=0;
if($ticker==0) echo '<tr>';
echo '<td style="width: 200px;"><a href="'.makeUrlNS($row['namespace'], $row['page_id']).'">'.$paths->pages[$paths->nslist[$row['namespace']].$row['page_id']]['name'].'</a></td>';
if($ticker==2) echo '</tr>';
}
$db->free_result();
if($ticker) echo '</tr>';
echo '</table><br /><br />';
}
$q = $db->sql_query('SELECT category_id FROM '.table_prefix.'categories WHERE page_id=\''.$paths->cpage['urlname_nons'].'\' AND namespace=\''.$paths->namespace.'\'');
if(!$q) $db->_die('The error seems to have occurred during selection of category data.');
if($db->numrows() > 0) {
echo '<div class="mdg-comment" style="margin-left: 0;">Categories: ';
$i=0;
while($r = $db->fetchrow())
{
if($i>0) echo ', ';
$i++;
echo '<a href="'.makeUrlNS('Category', $r['category_id']).'">'.$paths->pages[$paths->nslist['Category'].$r['category_id']]['name'].'</a>';
}
if( ( $paths->wiki_mode && !$paths->page_protected ) || ( $session->get_permissions('edit_cat') && $session->get_permissions('even_when_protected') ) ) echo ' [ <a href="'.makeUrl($paths->page, 'do=catedit', true).'" onclick="ajaxCatEdit(); return false;">edit categorization</a> ]</div>';
} else {
echo '<div class="mdg-comment" style="margin-left: 0;">Categories: ';
echo '(Uncategorized)';
if( ( $paths->wiki_mode && !$paths->page_protected ) || ( $session->get_permissions('edit_cat') && $session->get_permissions('even_when_protected') ) ) echo ' [ <a href="'.makeUrl($paths->page, 'do=catedit', true).'" onclick="ajaxCatEdit(); return false;">edit categorization</a> ]</div>';
else echo '</div>';
}
$db->free_result();
}
function show_file_info()
{
global $db, $session, $paths, $template, $plugins; // Common objects
if($paths->namespace != 'File') return null; // Prevent unnecessary work
$selfn = $paths->cpage['urlname_nons']; // substr($paths->page, strlen($paths->nslist['File']), strlen($paths->cpage));
if(substr($paths->cpage['name'], 0, strlen($paths->nslist['File']))==$paths->nslist['File']) $selfn = substr($paths->cpage['urlname_nons'], strlen($paths->nslist['File']), strlen($paths->cpage['urlname_nons']));
$q = $db->sql_query('SELECT mimetype,time_id,size FROM '.table_prefix.'files WHERE page_id=\''.$selfn.'\' ORDER BY time_id DESC;');
if(!$q) $db->_die('The file type could not be fetched.');
if($db->numrows() < 1) { echo '<div class="mdg-comment" style="margin-left: 0;"><h3>Uploaded file</h3><p>There are no files uploaded with this name yet. <a href="'.makeUrlNS('Special', 'UploadFile/'.$paths->cpage['urlname_nons']).'">Upload a file...</a></p></div><br />'; return; }
$r = $db->fetchrow();
$mimetype = $r['mimetype'];
$datestring = date('F d, Y h:i a', (int)$r['time_id']);
echo '<div class="mdg-comment" style="margin-left: 0;"><p><h3>Uploaded file</h3></p><p>Type: '.$r['mimetype'].'<br />Size: ';
$fs = $r['size'];
echo $fs.' bytes';
$fs = (int)$fs;
if($fs >= 1048576)
{
$fs = round($fs / 1048576, 1);
echo ' ('.$fs.' MB)';
} elseif($fs >= 1024) {
$fs = round($fs / 1024, 1);
echo ' ('.$fs.' KB)';
}
echo '<br />Uploaded: '.$datestring.'</p>';
if(substr($mimetype, 0, 6)!='image/' && ( substr($mimetype, 0, 5) != 'text/' || $mimetype == 'text/html' || $mimetype == 'text/javascript' ))
{
echo '<div class="warning-box">This file type may contain viruses or other code that could harm your computer. You should exercise caution if you download it.</div>';
}
if(substr($mimetype, 0, 6)=='image/')
{
echo '<p><a href="'.makeUrlNS('Special', 'DownloadFile'.'/'.$selfn).'"><img style="border: 0;" alt="'.$paths->page.'" src="'.makeUrlNS('Special', 'DownloadFile'.'/'.$selfn.htmlspecialchars(urlSeparator).'preview').'" /></a></p>';
}
echo '<p><a href="'.makeUrlNS('Special', 'DownloadFile'.'/'.$selfn.'/'.$r['time_id'].htmlspecialchars(urlSeparator).'download').'">Download this file</a>';
if(!$paths->page_protected && ( $paths->wiki_mode || $session->get_permissions('upload_new_version') ))
{
echo ' | <a href="'.makeUrlNS('Special', 'UploadFile'.'/'.$selfn).'">Upload new version</a>';
}
echo '</p>';
if($db->numrows() > 1)
{
echo '<h3>File history</h3><p>';
while($r = $db->fetchrow())
{
echo '(<a href="'.makeUrlNS('Special', 'DownloadFile'.'/'.$selfn.'/'.$r['time_id'].htmlspecialchars(urlSeparator).'download').'">this ver</a>) ';
if($session->get_permissions('history_rollback'))
echo ' (<a href="#" onclick="ajaxRollback(\''.$r['time_id'].'\'); return false;">revert</a>) ';
$mimetype = $r['mimetype'];
$datestring = date('F d, Y h:i a', (int)$r['time_id']);
echo $datestring.': '.$r['mimetype'].', ';
$fs = $r['size'];
$fs = (int)$fs;
if($fs >= 1048576)
{
$fs = round($fs / 1048576, 1);
echo ' '.$fs.' MB';
} elseif($fs >= 1024) {
$fs = round($fs / 1024, 1);
echo ' '.$fs.' KB';
} else {
echo ' '.$fs.' bytes';
}
echo '<br />';
}
echo '</p>';
}
$db->free_result();
echo '</div><br />';
}
function display_page_headers()
{
global $db, $session, $paths, $template, $plugins; // Common objects
if($session->get_permissions('vote_reset') && $paths->cpage['delvotes'] > 0)
{
$hr = implode(', ', explode('|', $paths->cpage['delvote_ips']));
$is = 'is';
$s = '';
$s2 = 's';
if ( $paths->cpage['delvotes'] > 1)
{
$is = 'are';
$s = 's';
$s2 = '';
}
echo '<div class="info-box" style="margin-left: 0; margin-top: 5px;" id="mdgDeleteVoteNoticeBox">
<b>Notice:</b> There '.$is.' '.$paths->cpage['delvotes'].' user'.$s.' that think'.$s2.' this page should be deleted.<br />
<b>Users that voted:</b> ' . $hr . '<br />
<a href="'.makeUrl($paths->page, 'do=deletepage').'" onclick="ajaxDeletePage(); return false;">Delete page</a> | <a href="'.makeUrl($paths->page, 'do=resetvotes').'" onclick="ajaxResetDelVotes(); return false;">Reset votes</a>
</div>';
}
}
function display_page_footers()
{
global $db, $session, $paths, $template, $plugins; // Common objects
if(isset($_GET['nofooters'])) return;
$code = $plugins->setHook('send_page_footers');
foreach ( $code as $cmd )
{
eval($cmd);
}
show_file_info();
show_category_info();
}
function password_prompt($id = false)
{
global $db, $session, $paths, $template, $plugins; // Common objects
if(!$id) $id = $paths->page;
if(isset($paths->pages[$id]['password']) && strlen($paths->pages[$id]['password']) == 40 && !isset($_REQUEST['pagepass']))
{
die_friendly('Password required', '<p>You must supply a password to access this page.</p><form action="'.makeUrl($paths->pages[$id]['urlname']).'" method="post"><p>Password: <input name="pagepass" type="password" /></p><p><input type="submit" value="Submit" /></p>');
} elseif(isset($_REQUEST['pagepass'])) {
$p = (preg_match('#^([a-f0-9]*){40}$#', $_REQUEST['pagepass'])) ? $_REQUEST['pagepass'] : sha1($_REQUEST['pagepass']);
if($p != $paths->pages[$id]['password']) die_friendly('Password required', '<p style="color: red;">The password you entered is incorrect.</p><form action="'.makeUrl($paths->page).'" method="post"><p>Password: <input name="pagepass" type="password" /></p><p><input type="submit" value="Submit" /></p>');
}
}
function str_hex($string){
$hex='';
for ($i=0; $i < strlen($string); $i++){
$hex .= ' '.dechex(ord($string[$i]));
}
return substr($hex, 1, strlen($hex));
}
// Function pulled from phpBB's smtp.php
function smtp_get_response($socket, $response, $line = __LINE__)
{
$server_response = '';
while (substr($server_response, 3, 1) != ' ')
{
if (!($server_response = fgets($socket, 256)))
{
die_friendly('SMTP Error', "<p>Couldn't get mail server response codes</p>");
}
}
if (!(substr($server_response, 0, 3) == $response))
{
die_friendly('SMTP Error', "<p>Ran into problems sending mail. Response: $server_response</p>");
}
}
function smtp_send_email($to, $subject, $message, $from)
{
return smtp_send_email_core($to, $subject, $message, "From: <$from>\n");
}
// Replacement or substitute for PHP's mail command
// Ported from phpBB - copyright (C) phpBB group, GPL.
function smtp_send_email_core($mail_to, $subject, $message, $headers = '')
{
global $board_config;
// Fix any bare linefeeds in the message to make it RFC821 Compliant.
$message = preg_replace("#(?<!\r)\n#si", "\r\n", $message);
if ($headers != '')
{
if (is_array($headers))
{
if (sizeof($headers) > 1)
{
$headers = join("\n", $headers);
}
else
{
$headers = $headers[0];
}
}
$headers = chop($headers);
// Make sure there are no bare linefeeds in the headers
$headers = preg_replace('#(?<!\r)\n#si', "\r\n", $headers);
// Ok this is rather confusing all things considered,
// but we have to grab bcc and cc headers and treat them differently
// Something we really didn't take into consideration originally
$header_array = explode("\r\n", $headers);
@reset($header_array);
$headers = '';
while(list(, $header) = each($header_array))
{
if (preg_match('#^cc:#si', $header))
{
$cc = preg_replace('#^cc:(.*)#si', '\1', $header);
}
else if (preg_match('#^bcc:#si', $header))
{
$bcc = preg_replace('#^bcc:(.*)#si', '\1', $header);
$header = '';
}
$headers .= ($header != '') ? $header . "\r\n" : '';
}
$headers = chop($headers);
$cc = explode(', ', $cc);
$bcc = explode(', ', $bcc);
}
if (trim($subject) == '')
{
die_friendly(GENERAL_ERROR, "No email Subject specified");
}
if (trim($message) == '')
{
die_friendly(GENERAL_ERROR, "Email message was blank");
}
// setup SMTP
$host = getConfig('smtp_server');
if ( empty($host) )
return 'No smtp_host in config';
if ( strstr($host, ':' ) )
{
$n = explode(':', $host);
$smtp_host = $n[0];
$port = intval($n[1]);
}
else
{
$smtp_host = $host;
$port = 25;
}
$smtp_user = getConfig('smtp_user');
$smtp_pass = getConfig('smtp_password');
// Ok we have error checked as much as we can to this point let's get on
// it already.
if( !$socket = @fsockopen($smtp_host, $port, $errno, $errstr, 20) )
{
die_friendly(GENERAL_ERROR, "Could not connect to smtp host : $errno : $errstr");
}
// Wait for reply
smtp_get_response($socket, "220", __LINE__);
// Do we want to use AUTH?, send RFC2554 EHLO, else send RFC821 HELO
// This improved as provided by SirSir to accomodate
if( !empty($smtp_user) && !empty($smtp_pass) )
{
enano_fputs($socket, "EHLO " . $smtp_host . "\r\n");
smtp_get_response($socket, "250", __LINE__);
enano_fputs($socket, "AUTH LOGIN\r\n");
smtp_get_response($socket, "334", __LINE__);
enano_fputs($socket, base64_encode($smtp_user) . "\r\n");
smtp_get_response($socket, "334", __LINE__);
enano_fputs($socket, base64_encode($smtp_pass) . "\r\n");
smtp_get_response($socket, "235", __LINE__);
}
else
{
enano_fputs($socket, "HELO " . $smtp_host . "\r\n");
smtp_get_response($socket, "250", __LINE__);
}
// From this point onward most server response codes should be 250
// Specify who the mail is from....
enano_fputs($socket, "MAIL FROM: <" . getConfig('contact_email') . ">\r\n");
smtp_get_response($socket, "250", __LINE__);
// Specify each user to send to and build to header.
$to_header = '';
// Add an additional bit of error checking to the To field.
$mail_to = (trim($mail_to) == '') ? 'Undisclosed-recipients:;' : trim($mail_to);
if (preg_match('#[^ ]+\@[^ ]+#', $mail_to))
{
enano_fputs($socket, "RCPT TO: <$mail_to>\r\n");
smtp_get_response($socket, "250", __LINE__);
}
// Ok now do the CC and BCC fields...
@reset($bcc);
while(list(, $bcc_address) = each($bcc))
{
// Add an additional bit of error checking to bcc header...
$bcc_address = trim($bcc_address);
if (preg_match('#[^ ]+\@[^ ]+#', $bcc_address))
{
enano_fputs($socket, "RCPT TO: <$bcc_address>\r\n");
smtp_get_response($socket, "250", __LINE__);
}
}
@reset($cc);
while(list(, $cc_address) = each($cc))
{
// Add an additional bit of error checking to cc header
$cc_address = trim($cc_address);
if (preg_match('#[^ ]+\@[^ ]+#', $cc_address))
{
enano_fputs($socket, "RCPT TO: <$cc_address>\r\n");
smtp_get_response($socket, "250", __LINE__);
}
}
// Ok now we tell the server we are ready to start sending data
enano_fputs($socket, "DATA\r\n");
// This is the last response code we look for until the end of the message.
smtp_get_response($socket, "354", __LINE__);
// Send the Subject Line...
enano_fputs($socket, "Subject: $subject\r\n");
// Now the To Header.
enano_fputs($socket, "To: $mail_to\r\n");
// Now any custom headers....
enano_fputs($socket, "$headers\r\n\r\n");
// Ok now we are ready for the message...
enano_fputs($socket, "$message\r\n");
// Ok the all the ingredients are mixed in let's cook this puppy...
enano_fputs($socket, ".\r\n");
smtp_get_response($socket, "250", __LINE__);
// Now tell the server we are done and close the socket...
enano_fputs($socket, "QUIT\r\n");
fclose($socket);
return TRUE;
}
/**
* Tell which version of Enano we're running.
* @param bool $long if true, uses English version names (e.g. alpha, beta, release candidate). If false (default) uses abbreviations (1.0a1, 1.0b3, 1.0RC2, etc.)
* @return string
*/
function enano_version($long = false, $no_nightly = false)
{
$r = getConfig('enano_version');
$rc = ( $long ) ? ' release candidate ' : 'RC';
$b = ( $long ) ? ' beta ' : 'b';
$a = ( $long ) ? ' alpha ' : 'a';
if($v = getConfig('enano_rc_version')) $r .= $rc.$v;
if($v = getConfig('enano_beta_version')) $r .= $b.$v;
if($v = getConfig('enano_alpha_version')) $r .= $a.$v;
if ( defined('ENANO_NIGHTLY') && !$no_nightly )
{
$nightlytag = ENANO_NIGHTLY_MONTH . '-' . ENANO_NIGHTLY_DAY . '-' . ENANO_NIGHTLY_YEAR;
$nightlylong = ' nightly; build date: ' . ENANO_NIGHTLY_MONTH . '-' . ENANO_NIGHTLY_DAY . '-' . ENANO_NIGHTLY_YEAR;
$r = ( $long ) ? $r . $nightlylong : $r . '-nightly-' . $nightlytag;
}
return $r;
}
function _dualurlenc($t) {
return rawurlencode(rawurlencode($t));
}
function _die($t) {
$_ob = 'document.getElementById("ajaxEditContainer").innerHTML = unescape(\'' . rawurlencode('' . $t . '') . '\')';
die($_ob);
}
function jsdie($text) {
global $db, $session, $paths, $template, $plugins; // Common objects
$text = rawurlencode($text . "\n\nSQL Backtrace:\n" . $db->sql_backtrace());
echo 'document.getElementById("ajaxEditContainer").innerHTML = unescape(\''.$text.'\');';
}
// HTML sanitizing function - written by Kallahar
// Original function at: http://quickwired.com/kallahar/smallprojects/php_xss_filter_function.php
// UNUSED - todo: remove this in gold or put it to use
function RemoveXSS($val) {
// remove all non-printable characters. CR(0a) and LF(0b) and TAB(9) are allowed
// this prevents some character re-spacing such as <java\0script>
// note that you have to handle splits with \n, \r, and \t later since they *are* allowed in some inputs
$val = preg_replace('/([\x00-\x08][\x0b-\x0c][\x0e-\x20])/', '', $val);
// straight replacements, the user should never need these since they're normal characters
// this prevents like <IMG SRC=@avascript:alert('XSS')>
$search = 'abcdefghijklmnopqrstuvwxyz';
$search .= 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';
$search .= '1234567890!@#$%^&*()';
$search .= '~`";:?+/={}[]-_|\'\\';
for ($i = 0; $i < strlen($search); $i++) {
// ;? matches the ;, which is optional
// 0{0,7} matches any padded zeros, which are optional and go up to 8 chars
// @ @ search for the hex values
$val = preg_replace('/(&#[x|X]0{0,8}'.dechex(ord($search[$i])).';?)/i', $search[$i], $val); // with a ;
// @ @ 0{0,7} matches '0' zero to seven times
$val = preg_replace('/(�{0,8}'.ord($search[$i]).';?)/', $search[$i], $val); // with a ;
}
// now the only remaining whitespace attacks are \t, \n, and \r
$ra1 = Array('javascript', 'vbscript', 'expression', 'applet', 'meta', 'xml', 'blink', 'link', 'script', 'embed', 'object', 'iframe', 'frame', 'frameset', 'ilayer', 'layer', 'bgsound', 'title', 'base');
$ra2 = Array('onabort', 'onactivate', 'onafterprint', 'onafterupdate', 'onbeforeactivate', 'onbeforecopy', 'onbeforecut', 'onbeforedeactivate', 'onbeforeeditfocus', 'onbeforepaste', 'onbeforeprint', 'onbeforeunload', 'onbeforeupdate', 'onblur', 'onbounce', 'oncellchange', 'onchange', 'onclick', 'oncontextmenu', 'oncontrolselect', 'oncopy', 'oncut', 'ondataavailable', 'ondatasetchanged', 'ondatasetcomplete', 'ondblclick', 'ondeactivate', 'ondrag', 'ondragend', 'ondragenter', 'ondragleave', 'ondragover', 'ondragstart', 'ondrop', 'onerror', 'onerrorupdate', 'onfilterchange', 'onfinish', 'onfocus', 'onfocusin', 'onfocusout', 'onhelp', 'onkeydown', 'onkeypress', 'onkeyup', 'onlayoutcomplete', 'onload', 'onlosecapture', 'onmousedown', 'onmouseenter', 'onmouseleave', 'onmousemove', 'onmouseout', 'onmouseover', 'onmouseup', 'onmousewheel', 'onmove', 'onmoveend', 'onmovestart', 'onpaste', 'onpropertychange', 'onreadystatechange', 'onreset', 'onresize', 'onresizeend', 'onresizestart', 'onrowenter', 'onrowexit', 'onrowsdelete', 'onrowsinserted', 'onscroll', 'onselect', 'onselectionchange', 'onselectstart', 'onstart', 'onstop', 'onsubmit', 'onunload');
$ra = array_merge($ra1, $ra2);
$found = true; // keep replacing as long as the previous round replaced something
while ($found == true) {
$val_before = $val;
for ($i = 0; $i < sizeof($ra); $i++) {
$pattern = '/';
for ($j = 0; $j < strlen($ra[$i]); $j++) {
if ($j > 0) {
$pattern .= '(';
$pattern .= '(&#[x|X]0{0,8}([9][a][b]);?)?';
$pattern .= '|(�{0,8}([9][10][13]);?)?';
$pattern .= ')?';
}
$pattern .= $ra[$i][$j];
}
$pattern .= '/i';
$replacement = substr($ra[$i], 0, 2).'<b></b>'.substr($ra[$i], 2); // add in <> to nerf the tag
$val = preg_replace($pattern, $replacement, $val); // filter out the hex tags
if ($val_before == $val) {
// no replacements were made, so exit the loop
$found = false;
}
}
}
return $val;
}
/**
* Capitalizes the first letter of a string
* @param $text string the text to be transformed
* @return string
*/
function capitalize_first_letter($text)
{
return strtoupper(substr($text, 0, 1)) . substr($text, 1);
}
/**
* Checks if a value in a bitfield is on or off
* @param $bitfield int the bit-field value
* @param $value int the value to switch off
* @return bool
*/
function is_bit($bitfield, $value)
{
return ( $bitfield & $value ) ? true : false;
}
/**
* Trims spaces/newlines from the beginning and end of a string
* @param $text the text to process
* @return string
*/
function trim_spaces($text)
{
$d = true;
while($d)
{
$c = substr($text, 0, 1);
$a = substr($text, strlen($text)-1, strlen($text));
if($c == "\n" || $c == "\r" || $c == "\t" || $c == ' ') $text = substr($text, 1, strlen($text));
elseif($a == "\n" || $a == "\r" || $a == "\t" || $a == ' ') $text = substr($text, 0, strlen($text)-1);
else $d = false;
}
return $text;
}
/**
* Enano-ese equivalent of str_split() which is only found in PHP5
* @param $text string the text to split
* @param $inc int size of each block
* @return array
*/
function enano_str_split($text, $inc = 1)
{
if($inc < 1)
{
return false;
}
if($inc >= strlen($text))
{
return Array($text);
}
$len = ceil(strlen($text) / $inc);
$ret = Array();
for ( $i = 0; $i < strlen($text); $i = $i + $inc )
{
$ret[] = substr($text, $i, $inc);
}
return $ret;
}
/**
* Converts a hexadecimal number to a binary string.
* @param text string hexadecimal number
* @return string
*/
function hex2bin($text)
{
$arr = enano_str_split($text, 2);
$ret = '';
for ($i=0; $i<sizeof($arr); $i++)
{
$ret .= chr(hexdec($arr[$i]));
}
return $ret;
}
/**
* Generates and/or prints a human-readable backtrace
* @param bool $return - if true, this function returns a string, otherwise returns null
* @return mixed
*/
function enano_debug_print_backtrace($return = false)
{
ob_start();
echo '<pre>';
if ( function_exists('debug_print_backtrace') )
{
debug_print_backtrace();
}
else
{
echo '<b>Warning:</b> No debug_print_backtrace() support!';
}
echo '</pre>';
$c = ob_get_contents();
ob_end_clean();
if($return) return $c;
else echo $c;
return null;
}
/**
* Like rawurlencode(), but encodes all characters
* @param string $text the text to encode
* @param optional string $prefix text before each hex character
* @param optional string $suffix text after each hex character
* @return string
*/
function hexencode($text, $prefix = '%', $suffix = '')
{
$arr = enano_str_split($text);
$r = '';
foreach($arr as $a)
{
$nibble = (string)dechex(ord($a));
if(strlen($nibble) == 1) $nibble = '0' . $nibble;
$r .= $prefix . $nibble . $suffix;
}
return $r;
}
/**
* Enano-ese equivalent of get_magic_quotes_gpc()
* @return bool
*/
function enano_get_magic_quotes_gpc()
{
if(function_exists('get_magic_quotes_gpc'))
{
return ( get_magic_quotes_gpc() == 1 );
}
else
{
return ( strtolower(@ini_get('magic_quotes_gpc')) == '1' );
}
}
/**
* Recursive stripslashes()
* @param array
* @return array
*/
function stripslashes_recurse($arr)
{
foreach($arr as $k => $xxxx)
{
$val =& $arr[$k];
if(is_string($val))
$val = stripslashes($val);
elseif(is_array($val))
$val = stripslashes_recurse($val);
}
return $arr;
}
/**
* Recursive function to remove all NUL bytes from a string
* @param array
* @return array
*/
function strip_nul_chars($arr)
{
foreach($arr as $k => $xxxx_unused)
{
$val =& $arr[$k];
if(is_string($val))
$val = str_replace("\000", '', $val);
elseif(is_array($val))
$val = strip_nul_chars($val);
}
return $arr;
}
/**
* If magic_quotes_gpc is on, calls stripslashes() on everything in $_GET/$_POST/$_COOKIE
* @ignore - this doesn't work too well in my tests
* @todo port version from the PHP manual
* @return void
*/
function strip_magic_quotes_gpc()
{
if(enano_get_magic_quotes_gpc())
{
$_POST = stripslashes_recurse($_POST);
$_GET = stripslashes_recurse($_GET);
$_COOKIE = stripslashes_recurse($_COOKIE);
$_REQUEST = stripslashes_recurse($_REQUEST);
}
$_POST = strip_nul_chars($_POST);
$_GET = strip_nul_chars($_GET);
$_COOKIE = strip_nul_chars($_COOKIE);
$_REQUEST = strip_nul_chars($_REQUEST);
}
/**
* A very basic single-character compression algorithm for binary strings/bitfields
* @param string $bits the text to compress
* @return string
*/
function compress_bitfield($bits)
{
$crc32 = crc32($bits);
$bits .= '0';
$start_pos = 0;
$current = substr($bits, 1, 1);
$last = substr($bits, 0, 1);
$chunk_size = 1;
$len = strlen($bits);
$crc = $len;
$crcval = 0;
for ( $i = 1; $i < $len; $i++ )
{
$current = substr($bits, $i, 1);
$last = substr($bits, $i - 1, 1);
$next = substr($bits, $i + 1, 1);
// Are we on the last character?
if($current == $last && $i+1 < $len)
$chunk_size++;
else
{
if($i+1 == $len && $current == $next)
{
// This character completes a chunk
$chunk_size++;
$i++;
$chunk = substr($bits, $start_pos, $chunk_size);
$chunklen = strlen($chunk);
$newchunk = $last . '[' . $chunklen . ']';
$newlen = strlen($newchunk);
$bits = substr($bits, 0, $start_pos) . $newchunk . substr($bits, $i, $len);
$chunk_size = 1;
$i = $start_pos + $newlen;
$start_pos = $i;
$len = strlen($bits);
$crcval = $crcval + $chunklen;
}
else
{
// Last character completed a chunk
$chunk = substr($bits, $start_pos, $chunk_size);
$chunklen = strlen($chunk);
$newchunk = $last . '[' . $chunklen . '],';
$newlen = strlen($newchunk);
$bits = substr($bits, 0, $start_pos) . $newchunk . substr($bits, $i, $len);
$chunk_size = 1;
$i = $start_pos + $newlen;
$start_pos = $i;
$len = strlen($bits);
$crcval = $crcval + $chunklen;
}
}
}
if($crc != $crcval)
{
echo __FUNCTION__.'(): ERROR: length check failed, this is a bug in the algorithm<br />Debug info: aiming for a CRC val of '.$crc.', got '.$crcval;
return false;
}
$compressed = 'cbf:len='.$crc.';crc='.dechex($crc32).';data='.$bits.'|end';
return $compressed;
}
/**
* Uncompresses a bitfield compressed with compress_bitfield()
* @param string $bits the compressed bitfield
* @return string the uncompressed, original (we hope) bitfield OR bool false on error
*/
function uncompress_bitfield($bits)
{
if(substr($bits, 0, 4) != 'cbf:')
{
echo __FUNCTION__.'(): ERROR: Invalid stream';
return false;
}
$len = intval(substr($bits, strpos($bits, 'len=')+4, strpos($bits, ';')-strpos($bits, 'len=')-4));
$crc = substr($bits, strpos($bits, 'crc=')+4, 8);
$data = substr($bits, strpos($bits, 'data=')+5, strpos($bits, '|end')-strpos($bits, 'data=')-5);
$data = explode(',', $data);
foreach($data as $a => $b)
{
$d =& $data[$a];
$char = substr($d, 0, 1);
$dlen = intval(substr($d, 2, strlen($d)-1));
$s = '';
for($i=0;$i<$dlen;$i++,$s.=$char);
$d = $s;
unset($s, $dlen, $char);
}
$decompressed = implode('', $data);
$decompressed = substr($decompressed, 0, -1);
$dcrc = (string)dechex(crc32($decompressed));
if($dcrc != $crc)
{
echo __FUNCTION__.'(): ERROR: CRC check failed<br />debug info:<br />original crc: '.$crc.'<br />decomp\'ed crc: '.$dcrc.'<br />';
return false;
}
return $decompressed;
}
/**
* Exports a MySQL table into a SQL string.
* @param string $table The name of the table to export
* @param bool $structure If true, include a CREATE TABLE command
* @param bool $data If true, include the contents of the table
* @param bool $compact If true, omits newlines between parts of SQL statements, use in Enano database exporter
* @return string
*/
function export_table($table, $structure = true, $data = true, $compact = false)
{
global $db, $session, $paths, $template, $plugins; // Common objects
$struct_keys = '';
$divider = (!$compact) ? "\n" : "\n";
$spacer1 = (!$compact) ? "\n" : " ";
$spacer2 = (!$compact) ? " " : " ";
$rowspacer = (!$compact) ? "\n " : " ";
$index_list = Array();
$cols = $db->sql_query('SHOW COLUMNS IN '.$table.';');
if(!$cols)
{
echo 'export_table(): Error getting column list: '.$db->get_error_text().'<br />';
return false;
}
$col = Array();
$sqlcol = Array();
$collist = Array();
$pri_keys = Array();
// Using fetchrow_num() here to compensate for MySQL l10n
while( $row = $db->fetchrow_num() )
{
$field =& $row[0];
$type =& $row[1];
$null =& $row[2];
$key =& $row[3];
$def =& $row[4];
$extra =& $row[5];
$col[] = Array(
'name'=>$field,
'type'=>$type,
'null'=>$null,
'key'=>$key,
'default'=>$def,
'extra'=>$extra,
);
$collist[] = $field;
}
if ( $structure )
{
$db->sql_query('SET SQL_QUOTE_SHOW_CREATE = 0;');
$struct = $db->sql_query('SHOW CREATE TABLE '.$table.';');
if ( !$struct )
$db->_die();
$row = $db->fetchrow_num();
$db->free_result();
$struct = $row[1];
$struct = preg_replace("/\n\) ENGINE=(.+)$/", "\n);", $struct);
unset($row);
if ( $compact )
{
$struct_arr = explode("\n", $struct);
foreach ( $struct_arr as $i => $leg )
{
if ( $i == 0 )
continue;
$test = trim($leg);
if ( empty($test) )
{
unset($struct_arr[$i]);
continue;
}
$struct_arr[$i] = preg_replace('/^([\s]*)/', ' ', $leg);
}
$struct = implode("", $struct_arr);
}
}
// Structuring complete
if($data)
{
$datq = $db->sql_query('SELECT * FROM '.$table.';');
if(!$datq)
{
echo 'export_table(): Error getting column list: '.$db->get_error_text().'<br />';
return false;
}
if($db->numrows() < 1)
{
if($structure) return $struct;
else return '';
}
$rowdata = Array();
$dataqs = Array();
$insert_strings = Array();
$z = false;
while($row = $db->fetchrow_num())
{
$z = false;
foreach($row as $i => $cell)
{
$str = mysql_encode_column($cell, $col[$i]['type']);
$rowdata[] = $str;
}
$dataqs2 = implode(",$rowspacer", $dataqs) . ",$rowspacer" . '( ' . implode(', ', $rowdata) . ' )';
$ins = 'INSERT INTO '.$table.'( '.implode(',', $collist).' ) VALUES' . $dataqs2 . ";";
if ( strlen( $ins ) > MYSQL_MAX_PACKET_SIZE )
{
// We've exceeded the maximum allowed packet size for MySQL - separate this into a different query
$insert_strings[] = 'INSERT INTO '.$table.'( '.implode(',', $collist).' ) VALUES' . implode(",$rowspacer", $dataqs) . ";";;
$dataqs = Array('( ' . implode(', ', $rowdata) . ' )');
$z = true;
}
else
{
$dataqs[] = '( ' . implode(', ', $rowdata) . ' )';
}
$rowdata = Array();
}
if ( !$z )
{
$insert_strings[] = 'INSERT INTO '.$table.'( '.implode(',', $collist).' ) VALUES' . implode(",$rowspacer", $dataqs) . ";";;
$dataqs = Array();
}
$datstring = implode($divider, $insert_strings);
}
if($structure && !$data) return $struct;
elseif(!$structure && $data) return $datstring;
elseif($structure && $data) return $struct . $divider . $datstring;
elseif(!$structure && !$data) return '';
}
/**
* Encodes a string value for use in an INSERT statement for given column type $type.
* @access private
*/
function mysql_encode_column($input, $type)
{
global $db, $session, $paths, $template, $plugins; // Common objects
// Decide whether to quote the string or not
if(substr($type, 0, 7) == 'varchar' || $type == 'datetime' || $type == 'text' || $type == 'tinytext' || $type == 'smalltext' || $type == 'longtext' || substr($type, 0, 4) == 'char')
{
$str = "'" . $db->escape($input) . "'";
}
elseif(in_array($type, Array('blob', 'longblob', 'mediumblob', 'smallblob')) || substr($type, 0, 6) == 'binary' || substr($type, 0, 9) == 'varbinary')
{
$str = '0x' . hexencode($input, '', '');
}
elseif(is_null($input))
{
$str = 'NULL';
}
else
{
$str = (string)$input;
}
return $str;
}
/**
* Creates an associative array defining which file extensions are allowed and which ones aren't
* @return array keyname will be a file extension, value will be true or false
*/
function fetch_allowed_extensions()
{
global $mime_types;
$bits = getConfig('allowed_mime_types');
if(!$bits) return Array(false);
$bits = uncompress_bitfield($bits);
if(!$bits) return Array(false);
$bits = enano_str_split($bits, 1);
$ret = Array();
$mt = array_keys($mime_types);
foreach($bits as $i => $b)
{
$ret[$mt[$i]] = ( $b == '1' ) ? true : false;
}
return $ret;
}
/**
* Generates a random key suitable for encryption
* @param int $len the length of the key
* @return string a BINARY key
*/
function randkey($len = 32)
{
$key = '';
for($i=0;$i<$len;$i++)
{
$key .= chr(mt_rand(0, 255));
}
return $key;
}
/**
* Decodes a hex string.
* @param string $hex The hex code to decode
* @return string
*/
function hexdecode($hex)
{
$hex = enano_str_split($hex, 2);
$bin_key = '';
foreach($hex as $nibble)
{
$byte = chr(hexdec($nibble));
$bin_key .= $byte;
}
return $bin_key;
}
/**
* Enano's own (almost) bulletproof HTML sanitizer.
* @param string $html The input HTML
* @return string cleaned HTML
*/
function sanitize_html($html, $filter_php = true)
{
$html = preg_replace('#<([a-z]+)([\s]+)([^>]+?)'.htmlalternatives('javascript:').'(.+?)>(.*?)</\\1>#is', '<\\1\\2\\3javascript:\\59>\\60</\\1>', $html);
$html = preg_replace('#<([a-z]+)([\s]+)([^>]+?)'.htmlalternatives('javascript:').'(.+?)>#is', '<\\1\\2\\3javascript:\\59>', $html);
if($filter_php)
$html = str_replace(
Array('<?php', '<?', '<%', '?>', '%>'),
Array('<?php', '<?', '<%', '?>', '%>'),
$html);
$tag_whitelist = array_keys ( setupAttributeWhitelist() );
if ( !$filter_php )
$tag_whitelist[] = '?php';
$len = strlen($html);
$in_quote = false;
$quote_char = '';
$tag_start = 0;
$tag_name = '';
$in_tag = false;
$trk_name = false;
for ( $i = 0; $i < $len; $i++ )
{
$chr = $html{$i};
$prev = ( $i == 0 ) ? '' : $html{ $i - 1 };
$next = ( ( $i + 1 ) == $len ) ? '' : $html { $i + 1 };
if ( $in_quote && $in_tag )
{
if ( $quote_char == $chr && $prev != '\\' )
$in_quote = false;
}
elseif ( ( $chr == '"' || $chr == "'" ) && $prev != '\\' && $in_tag )
{
$in_quote = true;
$quote_char = $chr;
}
if ( $chr == '<' && !$in_tag && $next != '/' )
{
// start of a tag
$tag_start = $i;
$in_tag = true;
$trk_name = true;
}
elseif ( !$in_quote && $in_tag && $chr == '>' )
{
$full_tag = substr($html, $tag_start, ( $i - $tag_start ) + 1 );
$l = strlen($tag_name) + 2;
$attribs_only = trim( substr($full_tag, $l, ( strlen($full_tag) - $l - 1 ) ) );
// Debugging message
// echo htmlspecialchars($full_tag) . '<br />';
if ( !in_array($tag_name, $tag_whitelist) )
{
// Illegal tag
//echo $tag_name . ' ';
$s = ( empty($attribs_only) ) ? '' : ' ';
$sanitized = '<' . $tag_name . $s . $attribs_only . '>';
$html = substr($html, 0, $tag_start) . $sanitized . substr($html, $i + 1);
$html = str_replace('</' . $tag_name . '>', '</' . $tag_name . '>', $html);
$new_i = $tag_start + strlen($sanitized);
$len = strlen($html);
$i = $new_i;
$in_tag = false;
$tag_name = '';
continue;
}
else
{
if ( $tag_name == '?php' && !$filter_php )
continue;
$f = fixTagAttributes( $attribs_only, $tag_name );
$s = ( empty($f) ) ? '' : ' ';
$sanitized = '<' . $tag_name . $f . '>';
$new_i = $tag_start + strlen($sanitized);
$html = substr($html, 0, $tag_start) . $sanitized . substr($html, $i + 1);
$len = strlen($html);
$i = $new_i;
$in_tag = false;
$tag_name = '';
continue;
}
}
elseif ( $in_tag && $trk_name )
{
$is_alphabetical = ( strtolower($chr) != strtoupper($chr) || in_array($chr, array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9')) || $chr == '?' || $chr == '!' || $chr == '-' );
if ( $is_alphabetical )
$tag_name .= $chr;
else
{
$trk_name = false;
}
}
}
// Vulnerability from ha.ckers.org/xss.html:
// <script src="http://foo.com/xss.js"
// <
// The rule is so specific because everything else will have been filtered by now
$html = preg_replace('/<(script|iframe)(.+?)src=([^>]*)</i', '<\\1\\2src=\\3<', $html);
// Unstrip comments
$html = preg_replace('/<!--([^>]*?)-->/i', '', $html);
return $html;
}
/**
* Using the same parsing code as sanitize_html(), this function adds <litewiki> tags around certain block-level elements
* @param string $html The input HTML
* @return string formatted HTML
*/
function wikiformat_process_block($html)
{
$tok1 = "<litewiki>";
$tok2 = "</litewiki>";
$block_tags = array('div', 'p', 'table', 'blockquote', 'pre');
$len = strlen($html);
$in_quote = false;
$quote_char = '';
$tag_start = 0;
$tag_name = '';
$in_tag = false;
$trk_name = false;
$diag = 0;
$block_tagname = '';
$in_blocksec = 0;
$block_start = 0;
for ( $i = 0; $i < $len; $i++ )
{
$chr = $html{$i};
$prev = ( $i == 0 ) ? '' : $html{ $i - 1 };
$next = ( ( $i + 1 ) == $len ) ? '' : $html { $i + 1 };
// Are we inside of a quoted section?
if ( $in_quote && $in_tag )
{
if ( $quote_char == $chr && $prev != '\\' )
$in_quote = false;
}
elseif ( ( $chr == '"' || $chr == "'" ) && $prev != '\\' && $in_tag )
{
$in_quote = true;
$quote_char = $chr;
}
if ( $chr == '<' && !$in_tag && $next == '/' )
{
// Iterate through until we've got a tag name
$tag_name = '';
$i++;
while(true)
{
$i++;
// echo $i . ' ';
$chr = $html{$i};
$prev = ( $i == 0 ) ? '' : $html{ $i - 1 };
$next = ( ( $i + 1 ) == $len ) ? '' : $html { $i + 1 };
$tag_name .= $chr;
if ( $next == '>' )
break;
}
// echo '<br />';
if ( in_array($tag_name, $block_tags) )
{
if ( $block_tagname == $tag_name )
{
$in_blocksec -= 1;
if ( $in_blocksec == 0 )
{
$block_tagname = '';
$i += 2;
// echo 'Finished wiki litewiki wraparound calc at pos: ' . $i;
$full_litewiki = substr($html, $block_start, ( $i - $block_start ));
$new_text = "{$tok1}{$full_litewiki}{$tok2}";
$html = substr($html, 0, $block_start) . $new_text . substr($html, $i);
$i += ( strlen($tok1) + strlen($tok2) ) - 1;
$len = strlen($html);
//die('<pre>' . htmlspecialchars($html) . '</pre>');
}
}
}
$in_tag = false;
$in_quote = false;
$tag_name = '';
continue;
}
else if ( $chr == '<' && !$in_tag && $next != '/' )
{
// start of a tag
$tag_start = $i;
$in_tag = true;
$trk_name = true;
}
else if ( !$in_quote && $in_tag && $chr == '>' )
{
if ( !in_array($tag_name, $block_tags) )
{
// Inline tag - reset and go to the next one
// echo '<inline ' . $tag_name . '> ';
$in_tag = false;
$tag_name = '';
continue;
}
else
{
// echo '<block: ' . $tag_name . ' @ ' . $i . '><br/>';
if ( $in_blocksec == 0 )
{
//die('Found a starting tag for a block element: ' . $tag_name . ' at pos ' . $tag_start);
$block_tagname = $tag_name;
$block_start = $tag_start;
$in_blocksec++;
}
else if ( $block_tagname == $tag_name )
{
$in_blocksec++;
}
$in_tag = false;
$tag_name = '';
continue;
}
}
elseif ( $in_tag && $trk_name )
{
$is_alphabetical = ( strtolower($chr) != strtoupper($chr) || in_array($chr, array('0', '1', '2', '3', '4', '5', '6', '7', '8', '9')) || $chr == '?' || $chr == '!' || $chr == '-' );
if ( $is_alphabetical )
$tag_name .= $chr;
else
{
$trk_name = false;
}
}
// Tokenization complete
}
$regex = '/' . str_replace('/', '\\/', preg_quote($tok2)) . '([\s]*)' . preg_quote($tok1) . '/is';
// die(htmlspecialchars($regex));
$html = preg_replace($regex, '\\1', $html);
return $html;
}
function htmlalternatives($string)
{
$ret = '';
for ( $i = 0; $i < strlen($string); $i++ )
{
$chr = $string{$i};
$ch1 = ord($chr);
$ch2 = dechex($ch1);
$byte = '(&\\#([0]*){0,7}' . $ch1 . ';|\\\\([0]*){0,7}' . $ch1 . ';|\\\\([0]*){0,7}' . $ch2 . ';|&\\#x([0]*){0,7}' . $ch2 . ';|%([0]*){0,7}' . $ch2 . '|' . preg_quote($chr) . ')';
$ret .= $byte;
$ret .= '([\s]){0,2}';
}
return $ret;
}
/**
* Paginates (breaks into multiple pages) a MySQL result resource, which is treated as unbuffered.
* @param resource The MySQL result resource. This should preferably be an unbuffered query.
* @param string A template, with variables being named after the column name
* @param int The number of total results. This should be determined by a second query.
* @param string sprintf-style formatting string for URLs for result pages. First parameter will be start offset.
* @param int Optional. Start offset in individual results. Defaults to 0.
* @param int Optional. The number of results per page. Defualts to 10.
* @param int Optional. An associative array of functions to call, with key names being column names, and values being function names. Values can also be an array with key 0 being either an object or a string(class name) and key 1 being a [static] method.
* @param string Optional. The text to be sent before the result list, only if there are any results. Possibly the start of a table.
* @param string Optional. The text to be sent after the result list, only if there are any results. Possibly the end of a table.
* @return string
*/
function paginate($q, $tpl_text, $num_results, $result_url, $start = 0, $perpage = 10, $callers = Array(), $header = '', $footer = '')
{
global $db, $session, $paths, $template, $plugins; // Common objects
$parser = $template->makeParserText($tpl_text);
$num_pages = ceil ( $num_results / $perpage );
$out = '';
$i = 0;
$this_page = ceil ( $start / $perpage );
// Build paginator
$begin = '<div class="tblholder" style="display: table; margin: 10px 0 0 auto;">
<table border="0" cellspacing="1" cellpadding="4">
<tr><th>Page:</th>';
$block = '<td class="row1" style="text-align: center;">{LINK}</td>';
$end = '</tr></table></div>';
$blk = $template->makeParserText($block);
$inner = '';
$cls = 'row2';
if ( $num_pages < 5 )
{
for ( $i = 0; $i < $num_pages; $i++ )
{
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$offset = strval($i * $perpage);
$url = sprintf($result_url, $offset);
$j = $i + 1;
$link = ( $offset == strval($start) ) ? "<b>$j</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>$j</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
}
else
{
if ( $this_page + 5 > $num_pages )
{
$list = Array();
$tp = $this_page;
if ( $this_page + 0 == $num_pages ) $tp = $tp - 3;
if ( $this_page + 1 == $num_pages ) $tp = $tp - 2;
if ( $this_page + 2 == $num_pages ) $tp = $tp - 1;
for ( $i = $tp - 1; $i <= $tp + 1; $i++ )
{
$list[] = $i;
}
}
else
{
$list = Array();
$current = $this_page;
$lower = ( $current < 3 ) ? 1 : $current - 1;
for ( $i = 0; $i < 3; $i++ )
{
$list[] = $lower + $i;
}
}
$url = sprintf($result_url, '0');
$link = ( 0 == $start ) ? "<b>First</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>« First</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
// if ( !in_array(1, $list) )
// {
// $cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
// $blk->assign_vars(array('CLASS'=>$cls,'LINK'=>'...'));
// $inner .= $blk->run();
// }
foreach ( $list as $i )
{
if ( $i == $num_pages )
break;
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$offset = strval($i * $perpage);
$url = sprintf($result_url, $offset);
$j = $i + 1;
$link = ( $offset == strval($start) ) ? "<b>$j</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>$j</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
$total = $num_pages * $perpage - $perpage;
if ( $this_page < $num_pages )
{
// $cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
// $blk->assign_vars(array('CLASS'=>$cls,'LINK'=>'...'));
// $inner .= $blk->run();
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$offset = strval($total);
$url = sprintf($result_url, $offset);
$j = $i + 1;
$link = ( $offset == strval($start) ) ? "<b>Last</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>Last »</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
}
$inner .= '<td class="row2" style="cursor: pointer;" onclick="paginator_goto(this, '.$this_page.', '.$num_pages.', '.$perpage.', unescape(\'' . rawurlencode($result_url) . '\'));">↓</td>';
$paginator = "\n$begin$inner$end\n";
$out .= $paginator;
$cls = 'row2';
if ( $row = $db->fetchrow($q) )
{
$i = 0;
$out .= $header;
do {
$i++;
if ( $i <= $start )
{
continue;
}
if ( ( $i - $start ) > $perpage )
{
break;
}
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
foreach ( $row as $j => $val )
{
if ( isset($callers[$j]) )
{
$tmp = ( is_callable($callers[$j]) ) ? @call_user_func($callers[$j], $val, $row) : $v;
if ( $tmp )
{
$row[$j] = $tmp;
}
}
}
$parser->assign_vars($row);
$parser->assign_vars(array('_css_class' => $cls));
$out .= $parser->run();
} while ( $row = $db->fetchrow($q) );
$out .= $footer;
}
$out .= $paginator;
return $out;
}
/**
* This is the same as paginate(), but it processes an array instead of a MySQL result resource.
* @param array The results. Each value is simply echoed.
* @param int The number of total results. This should be determined by a second query.
* @param string sprintf-style formatting string for URLs for result pages. First parameter will be start offset.
* @param int Optional. Start offset in individual results. Defaults to 0.
* @param int Optional. The number of results per page. Defualts to 10.
* @param string Optional. The text to be sent before the result list, only if there are any results. Possibly the start of a table.
* @param string Optional. The text to be sent after the result list, only if there are any results. Possibly the end of a table.
* @return string
*/
function paginate_array($q, $num_results, $result_url, $start = 0, $perpage = 10, $header = '', $footer = '')
{
global $db, $session, $paths, $template, $plugins; // Common objects
$parser = $template->makeParserText($tpl_text);
$num_pages = ceil ( $num_results / $perpage );
$out = '';
$i = 0;
$this_page = ceil ( $start / $perpage );
// Build paginator
$begin = '<div class="tblholder" style="display: table; margin: 10px 0 0 auto;">
<table border="0" cellspacing="1" cellpadding="4">
<tr><th>Page:</th>';
$block = '<td class="row1" style="text-align: center;">{LINK}</td>';
$end = '</tr></table></div>';
$blk = $template->makeParserText($block);
$inner = '';
$cls = 'row2';
if ( $start > 0 )
{
$url = sprintf($result_url, abs($start - $perpage));
$link = "<a href=".'"'."$url".'"'." style='text-decoration: none;'>« Prev</a>";
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
if ( $num_pages < 5 )
{
for ( $i = 0; $i < $num_pages; $i++ )
{
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$offset = strval($i * $perpage);
$url = sprintf($result_url, $offset);
$j = $i + 1;
$link = ( $offset == strval($start) ) ? "<b>$j</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>$j</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
}
else
{
if ( $this_page + 5 > $num_pages )
{
$list = Array();
$tp = $this_page;
if ( $this_page + 0 == $num_pages ) $tp = $tp - 3;
if ( $this_page + 1 == $num_pages ) $tp = $tp - 2;
if ( $this_page + 2 == $num_pages ) $tp = $tp - 1;
for ( $i = $tp - 1; $i <= $tp + 1; $i++ )
{
$list[] = $i;
}
}
else
{
$list = Array();
$current = $this_page;
$lower = ( $current < 3 ) ? 1 : $current - 1;
for ( $i = 0; $i < 3; $i++ )
{
$list[] = $lower + $i;
}
}
$url = sprintf($result_url, '0');
$link = ( 0 == $start ) ? "<b>First</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>« First</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
// if ( !in_array(1, $list) )
// {
// $cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
// $blk->assign_vars(array('CLASS'=>$cls,'LINK'=>'...'));
// $inner .= $blk->run();
// }
foreach ( $list as $i )
{
if ( $i == $num_pages )
break;
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$offset = strval($i * $perpage);
$url = sprintf($result_url, $offset);
$j = $i + 1;
$link = ( $offset == strval($start) ) ? "<b>$j</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>$j</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
$total = $num_pages * $perpage - $perpage;
if ( $this_page < $num_pages )
{
// $cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
// $blk->assign_vars(array('CLASS'=>$cls,'LINK'=>'...'));
// $inner .= $blk->run();
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$offset = strval($total);
$url = sprintf($result_url, $offset);
$j = $i + 1;
$link = ( $offset == strval($start) ) ? "<b>Last</b>" : "<a href=".'"'."$url".'"'." style='text-decoration: none;'>Last »</a>";
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
}
if ( $start < $total )
{
$url = sprintf($result_url, abs($start + $perpage));
$link = "<a href=".'"'."$url".'"'." style='text-decoration: none;'>Next »</a>";
$cls = ( $cls == 'row1' ) ? 'row2' : 'row1';
$blk->assign_vars(array(
'CLASS'=>$cls,
'LINK'=>$link
));
$inner .= $blk->run();
}
$inner .= '<td class="row2" style="cursor: pointer;" onclick="paginator_goto(this, '.$this_page.', '.$num_pages.', '.$perpage.', unescape(\'' . rawurlencode($result_url) . '\'));">↓</td>';
$paginator = "\n$begin$inner$end\n";
if ( $total > 1 )
$out .= $paginator;
$cls = 'row2';
if ( sizeof($q) > 0 )
{
$i = 0;
$out .= $header;
foreach ( $q as $val ) {
$i++;
if ( $i <= $start )
{
continue;
}
if ( ( $i - $start ) > $perpage )
{
break;
}
$out .= $val;
}
$out .= $footer;
}
if ( $total > 1 )
$out .= $paginator;
return $out;
}
/**
* Enano version of fputs for debugging
*/
function enano_fputs($socket, $data)
{
// echo '<pre>' . htmlspecialchars($data) . '</pre>';
// flush();
// ob_flush();
// ob_end_flush();
return fputs($socket, $data);
}
/**
* Sanitizes a page URL string so that it can safely be stored in the database.
* @param string Page ID to sanitize
* @return string Cleaned text
*/
function sanitize_page_id($page_id)
{
// Remove character escapes
$page_id = dirtify_page_id($page_id);
$pid_clean = preg_replace('/[\w\.\/:;\(\)@\[\]_-]/', 'X', $page_id);
$pid_dirty = enano_str_split($pid_clean, 1);
foreach ( $pid_dirty as $id => $char )
{
if ( $char == 'X' )
continue;
$cid = ord($char);
$cid = dechex($cid);
$cid = strval($cid);
if ( strlen($cid) < 2 )
{
$cid = strtoupper("0$cid");
}
$pid_dirty[$id] = ".$cid";
}
$pid_chars = enano_str_split($page_id, 1);
$page_id_cleaned = '';
foreach ( $pid_chars as $id => $char )
{
if ( $pid_dirty[$id] == 'X' )
$page_id_cleaned .= $char;
else
$page_id_cleaned .= $pid_dirty[$id];
}
// global $mime_types;
// $exts = array_keys($mime_types);
// $exts = '(' . implode('|', $exts) . ')';
// $page_id_cleaned = preg_replace('/\.2e' . $exts . '$/', '.\\1', $page_id_cleaned);
return $page_id_cleaned;
}
/**
* Removes character escapes in a page ID string
* @param string Page ID string to dirty up
* @return string
*/
function dirtify_page_id($page_id)
{
global $db, $session, $paths, $template, $plugins; // Common objects
// First, replace spaces with underscores
$page_id = str_replace(' ', '_', $page_id);
// Exception for userpages for IP addresses
if ( preg_match('/^' . preg_quote($paths->nslist['User']) . '/', $page_id) )
{
$ip = preg_replace('/^' . preg_quote($paths->nslist['User']) . '/', '', $page_id);
if ( is_valid_ip($ip) )
return $page_id;
}
preg_match_all('/\.[A-Fa-f0-9][A-Fa-f0-9]/', $page_id, $matches);
foreach ( $matches[0] as $id => $char )
{
$char = substr($char, 1);
$char = strtolower($char);
$char = intval(hexdec($char));
$char = chr($char);
$page_id = str_replace($matches[0][$id], $char, $page_id);
}
return $page_id;
}
/**
* Inserts commas into a number to make it more human-readable. Floating point-safe.
* @param int The number to process
* @return string Input number with commas added
*/
function commatize($num)
{
$num = (string)$num;
if ( strpos($num, '.') )
{
$whole = explode('.', $num);
$num = $whole[0];
$dec = $whole[1];
}
else
{
$whole = $num;
}
$offset = ( strlen($num) ) % 3;
$len = strlen($num);
$offset = ( $offset == 0 )
? 3
: $offset;
for ( $i = $offset; $i < $len; $i=$i+3 )
{
$num = substr($num, 0, $i) . ',' . substr($num, $i, $len);
$len = strlen($num);
$i++;
}
if ( isset($dec) )
{
return $num . '.' . $dec;
}
else
{
return $num;
}
}
/**
* Injects a string into another string at the specified position.
* @param string The haystack
* @param string The needle
* @param int Position at which to insert the needle
*/
function inject_substr($haystack, $needle, $pos)
{
$str1 = substr($haystack, 0, $pos);
$pos++;
$str2 = substr($haystack, $pos);
return "{$str1}{$needle}{$str2}";
}
/**
* Tells if a given IP address is valid.
* @param string suspected IP address
* @return bool true if valid, false otherwise
*/
function is_valid_ip($ip)
{
// These came from phpBB3.
$ipv4 = '(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])';
$ipv6 = '(?:(?:(?:[\dA-F]{1,4}:){6}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:::(?:[\dA-F]{1,4}:){5}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:):(?:[\dA-F]{1,4}:){4}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,2}:(?:[\dA-F]{1,4}:){3}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,3}:(?:[\dA-F]{1,4}:){2}(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,4}:(?:[\dA-F]{1,4}:)(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,5}:(?:[\dA-F]{1,4}:[\dA-F]{1,4}|(?:(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.){3}(?:\d{1,2}|1\d\d|2[0-4]\d|25[0-5])))|(?:(?:[\dA-F]{1,4}:){1,6}:[\dA-F]{1,4})|(?:(?:[\dA-F]{1,4}:){1,7}:))';
if ( preg_match("/^{$ipv4}$/", $ip) || preg_match("/^{$ipv6}$/", $ip) )
return true;
else
return false;
}
//die('<pre>Original: 01010101010100101010100101010101011010'."\nProcessed: ".uncompress_bitfield(compress_bitfield('01010101010100101010100101010101011010')).'</pre>');
?>