utils.inc.php

Go to the documentation of this file.

<?php
 
require_once("header.inc.php");
 
ch_import('ChWsbModule');
 
define('CH_WSB_LINK_CLASS', 'ch-link');
 
define('CH_WSB_LOCALE_TIME', 2);
define('CH_WSB_LOCALE_DATE_SHORT', 4);
define('CH_WSB_LOCALE_DATE', 5);
 
define('CH_WSB_LOCALE_PHP', 1);
define('CH_WSB_LOCALE_DB', 2);
 
define('CH_TAGS_NO_ACTION', 0); // default
define('CH_TAGS_STRIP', 1);
define('CH_TAGS_SPECIAL_CHARS', 8);
define('CH_TAGS_VALIDATE', 16);
define('CH_TAGS_STRIP_AND_NL2BR', 32);
 
define('CH_SLASHES_AUTO', 0); // default
define('CH_SLASHES_ADD', 1);
define('CH_SLASHES_STRIP', 2);
define('CH_SLASHES_NO_ACTION', 3);
 
define('CH_ESCAPE_STR_AUTO', 0); 
define('CH_ESCAPE_STR_APOS', 1); 
define('CH_ESCAPE_STR_QUOTE', 2); 
 
define('CH_URL_RE', "@\b((https?://)|(www\.))(([0-9a-zA-Z_!~*'().&=+$%-]+:)?[0-9a-zA-Z_!~*'().&=+$%-]+\@)?(([0-9]{1,3}\.){3}[0-9]{1,3}|([0-9a-zA-Z_!~*'()-]+\.)*([0-9a-zA-Z][0-9a-zA-Z-]{0,61})?[0-9a-zA-Z]\.[a-zA-Z]{2,6})(:[0-9]{1,4})?((/[0-9a-zA-Z_!~*'().;?:\@&=+$,%#-]+)*/?)@"); 
 
function title2uri($sValue)
{
    return str_replace(
        array('&', '/', '\\', '"', '+'),
        array('[and]', '[slash]', '[backslash]', '[quote]', '[plus]'),
        $sValue
    );
}
 
function uri2title($sValue)
{
    return str_replace(
        array('[and]', '[slash]', '[backslash]', '[quote]', '[plus]'),
        array('&', '/', '\\', '"', '+'),
        $sValue
    );
}
 
function getLocaleDate($sTimestamp = '', $iCode = CH_WSB_LOCALE_DATE_SHORT)
{
    $sFormat = (int)$iCode == 6 ? 'r' : getLocaleFormat($iCode);
 
    return date($sFormat, $sTimestamp);
}
 
function getLocaleFormat($iCode = CH_WSB_LOCALE_DATE_SHORT, $iType = CH_WSB_LOCALE_PHP)
{
    $sPostfix = (int)$iType == CH_WSB_LOCALE_PHP ? '_php' : '';
 
    $sResult = '';
    switch ($iCode) {
        case 2:
            $sResult = getParam('time_format' . $sPostfix);
            break;
        case 1:
        case 4:
            $sResult = getParam('short_date_format' . $sPostfix);
            break;
        case 3:
        case 5:
            $sResult = getParam('date_format' . $sPostfix);
            break;
    }
 
    return $sResult;
}
 
function ch_time_utc($iUnixTimestamp)
{
    return gmdate(DATE_ISO8601, (int)$iUnixTimestamp);
}
 
function isBlocked($iFirstProfile, $iSecondProfile)
{
    $iFirstProfile  = (int)$iFirstProfile;
    $iSecondProfile = (int)$iSecondProfile;
    $sQuery         = "SELECT COUNT(*) FROM `sys_block_list` WHERE `ID` = {$iFirstProfile} AND `Profile` = {$iSecondProfile}";
 
    return db_value($sQuery) ? true : false;
}
 
/*
 * function for work with profile
 */
function is_friends($id1, $id2)
{
    $id1 = (int)$id1;
    $id2 = (int)$id2;
    if ($id1 == 0 || $id2 == 0) {
        return;
    }
    $cnt = db_arr("SELECT SUM(`Check`) AS 'cnt' FROM `sys_friend_list` WHERE `ID`='{$id1}' AND `Profile`='{$id2}' OR `ID`='{$id2}' AND `Profile`='{$id1}'");
 
    return ($cnt['cnt'] > 0 ? true : false);
}
 
/*
 * functions for limiting maximal word length (returned from ash).
 */
function WordWrapStr($sString, $iWidth = 25, $sWrapCharacter = '&shy;')
{
    if (empty($sString) || mb_strlen($sString, 'UTF-8') <= $iWidth) {
        return $sString;
    }
 
    $aSpecialSymbols = array("\r", "\n");
    $aSpecialSymbolsWithSpace = array(" _SLASHR_ ", " _SLASHN_ ");
    $aSpecialSymbolsWithSpace2 = array("_SLASHR_", "_SLASHN_");
    if ($iWidth > 9) {
        $sString = str_replace($aSpecialSymbols, $aSpecialSymbolsWithSpace, $sString);
    } // preserve new line characters
 
    $aWords  = mb_split("\s", $sString);
    $sResult = ' ';
    foreach ($aWords as $sWord) {
 
        if (($iWord = mb_strlen($sWord, 'UTF-8')) <= $iWidth || preg_match(CH_URL_RE, $sWord)) {
            if ($iWord > 0) {
                $sResult .= $sWord . ' ';
            }
 
            continue;
        }
 
        $iPosition = 0;
        while ($iPosition < $iWord) {
            $sResult .= mb_substr($sWord, $iPosition, $iWidth, 'UTF-8') . $sWrapCharacter;
            $iPosition += $iWidth;
        }
        $sResult .= ' ';
    }
 
    if ($iWidth > 9) {
        $sResult = str_replace($aSpecialSymbolsWithSpace, $aSpecialSymbols, $sResult);
        $sResult = str_replace($aSpecialSymbolsWithSpace2, $aSpecialSymbols, $sResult);
    }
 
    return trim($sResult);
}
 
/*
 * functions for limiting maximal word length
 */
function strmaxwordlen($input, $len = 100)
{
    return $input;
}
 
/*
 * functions for limiting maximal text length
 */
function strmaxtextlen($sInput, $iMaxLen = 60)
{
    $sTail = '';
    $s     = trim(strip_tags($sInput));
    if (mb_strlen($s) > $iMaxLen) {
        $s     = mb_substr($s, 0, $iMaxLen);
        $sTail = '&#8230;';
    }
 
    return htmlspecialchars_adv($s) . $sTail;
}
 
function html2txt($content, $tags = "")
{
    while ($content != strip_tags($content, $tags)) {
        $content = strip_tags($content, $tags);
    }
 
    return $content;
}
 
function html_encode($text)
{
    $searcharray = array(
        "'([-_\w\d.]+@[-_\w\d.]+)'",
        "'((?:(?!://).{3}|^.{0,2}))(www\.[-\d\w\.\/]+)'",
        "'(http[s]?:\/\/[-_~\w\d\.\/]+)'"
    );
 
    $replacearray = array(
        "<a href=\"mailto:\\1\">\\1</a>",
        "\\1http://\\2",
        "<a href=\"\\1\" target=_blank>\\1</a>"
    );
 
    return preg_replace($searcharray, $replacearray, stripslashes($text));
}
 
function process_db_input($sText, $iStripTags = 0)
{
    if (is_array($sText)) {
        foreach ($sText as $k => $v) {
            $sText[$k] = process_db_input($v, $iStripTags);
        }
 
        return $sText;
    }
 
    $oDb = ChWsbDb::getInstance();
    switch ($iStripTags) {
        case CH_TAGS_STRIP_AND_NL2BR:
            return $oDb->escape(nl2br(strip_tags($sText)), false);
        case CH_TAGS_STRIP:
            return $oDb->escape(strip_tags($sText), false);
        case CH_TAGS_SPECIAL_CHARS:
            return $oDb->escape(htmlspecialchars($sText, ENT_QUOTES, 'UTF-8'), false);
        case CH_TAGS_VALIDATE:
            return $oDb->escape(clear_xss($sText), false);
        case CH_TAGS_NO_ACTION:
        default:
            return $oDb->escape($sText, false);
    }
}
 
function process_pass_data($text, $strip_tags = 0)
{
    if ($strip_tags) {
        $text = strip_tags($text);
    }
 
    return $text;
}
 
/*
 * function for output data from database into html
 */
function htmlspecialchars_adv($string)
{
    return htmlspecialchars($string, ENT_COMPAT, 'UTF-8', false);
 
    /*
    $patterns = array( "/(?!&#\d{2,};)&/m", "/>/m", "/</m", "/\"/m", "/'/m" );
    $replaces = array( "&amp;", "&gt;", "&lt;", "&quot;", "&#039;" );
    return preg_replace( $patterns, $replaces, $string );
    */
}
 
function process_text_output($text, $maxwordlen = 100)
{
    return (htmlspecialchars_adv(strmaxwordlen($text, $maxwordlen)));
}
 
function process_textarea_output($text, $maxwordlen = 100)
{
    return htmlspecialchars_adv(strmaxwordlen($text, $maxwordlen));
}
 
function process_text_withlinks_output($text, $maxwordlen = 100)
{
    return nl2br(html_encode(htmlspecialchars_adv(strmaxwordlen($text, $maxwordlen))));
}
 
function process_line_output($text, $maxwordlen = 100)
{
    return htmlspecialchars_adv(strmaxwordlen($text, $maxwordlen));
}
 
function process_html_output($text, $maxwordlen = 100)
{
    return strmaxwordlen($text, $maxwordlen);
}
 
function ConstructHiddenValues($Values)
{
    function ConstructHiddenSubValues($Name, $Value)
    {
        if (is_array($Value)) {
            $Result = "";
            foreach ($Value as $KeyName => $SubValue) {
                $Result .= ConstructHiddenSubValues("{$Name}[{$KeyName}]", $SubValue);
            }
        } else // Exit recurse
        {
            $Result = "<input type=\"hidden\" name=\"" . htmlspecialchars($Name) . "\" value=\"" . htmlspecialchars($Value) . "\" />\n";
        }
 
        return $Result;
    }
 
    /* End of ConstructHiddenSubValues function */
 
    $Result = '';
    if (is_array($Values)) {
        foreach ($Values as $KeyName => $Value) {
            $Result .= ConstructHiddenSubValues($KeyName, $Value);
        }
    }
 
    return $Result;
}
 
function RedirectCode($ActionURL, $Params = null, $Method = "get", $Title = 'Redirect')
{
    if ((strcasecmp(trim($Method), "get") && strcasecmp(trim($Method), "post")) || (trim($ActionURL) == "")) {
        return false;
    }
 
    ob_start();
 
    ?>
    <html>
    <head>
        <title><?= $Title ?></title>
    </head>
    <body>
    <form name="RedirectForm" action="<?= htmlspecialchars($ActionURL) ?>" method="<?= $Method ?>">
 
        <?= ConstructHiddenValues($Params) ?>
 
    </form>
    <script type="text/javascript">
        <!--
        document.forms['RedirectForm'].submit();
        -->
    </script>
    </body>
    </html>
    <?php
 
    $Result = ob_get_contents();
    ob_end_clean();
 
    return $Result;
}
 
function Redirect($ActionURL, $Params = null, $Method = "get", $Title = 'Redirect')
{
    $RedirectCodeValue = RedirectCode($ActionURL, $Params, $Method, $Title);
    if ($RedirectCodeValue !== false) {
        echo $RedirectCodeValue;
    }
}
 
function isRWAccessible($sFileName)
{
    clearstatcache();
    $perms = fileperms($sFileName);
 
    return ($perms & 0x0004 && $perms & 0x0002) ? true : false;
}
 
 function sendMail(
     $sRecipientEmail,
     $sMailSubject,
     $sMailBody,
     $iRecipientID = 0,
     $aPlus = array(),
     $sEmailFlag = 'html',
     $isDisableAlert = false,
     $bForceSend = false
 ) {
     global $site;
 
     if (!$sRecipientEmail || preg_match('/\‍(2\‍)$/', $sRecipientEmail)) {
         return false;
     }
 
     $aRecipientInfo = $iRecipientID ? getProfileInfo($iRecipientID) : array();
 
     // don't send mail to the user if he/she decided to not receive any site's notifications, unless it is critical emails (like email confirmation)
     if (!$bForceSend) {
         $aRealRecipient = $GLOBALS['MySQL']->getRow("SELECT * FROM `Profiles` WHERE `Email`= ? LIMIT 1",
             [$sRecipientEmail]);
         if ($aRealRecipient && 1 != $aRealRecipient['EmailNotify']) {
             return true;
         }
     }
 
     $sEmailNotify    = isset($GLOBALS['site']['email_notify']) ? $GLOBALS['site']['email_notify'] : getParam('site_email_notify');
     $sSiteTitle      = isset($GLOBALS['site']['title']) ? $GLOBALS['site']['title'] : getParam('site_title');
     $sMailHeader     = "From: =?UTF-8?B?" . base64_encode($sSiteTitle) . "?= <{$sEmailNotify}>";
     $sMailParameters = "-f{$sEmailNotify}";
 
     if ($aPlus || $iRecipientID) {
         if (!is_array($aPlus)) {
             $aPlus = array();
         }
         ch_import('ChWsbEmailTemplates');
         $oEmailTemplates = new ChWsbEmailTemplates();
         $sMailSubject    = $oEmailTemplates->parseContent($sMailSubject, $aPlus, $iRecipientID);
         $sMailBody       = $oEmailTemplates->parseContent($sMailBody, $aPlus, $iRecipientID);
     }
 
     $sMailSubjectEncoded = '=?UTF-8?B?' . base64_encode($sMailSubject) . '?=';
 
     $sMailHeader = "MIME-Version: 1.0\r\n" . $sMailHeader;
 
     if('on' == getParam('email_log_emabled')) {
         $sLogDate = date("F j, Y, g:i a");
         $sHttpRefererLog = isset($_SERVER['HTTP_REFERER']) ? $_SERVER['HTTP_REFERER'] : 'Empty';
         $sMailSubjectLog = ($sMailSubject == '' ? 'Empty' : $sMailSubject);
         $sMailSubjectEncodedLog = ($sMailSubjectEncoded == '' ? 'Empty' : $sMailSubjectEncoded);
         $sRecipientEmailLog = ($sRecipientEmail == '' ? 'Empty' : $sRecipientEmail);
         $sMailBodyLog = ($sMailBody == '' ? 'Empty' : $sMailBody);
         $iRecipientIDLog = $iRecipientID;
         $aPlusLog = serialize($aPlus);
         $sEmailFlagLog = $sEmailFlag;
         $isDisableAlertLog = ($isDisableAlert == true ? 'True' : 'False');
         $bForceSendLog = ($bForceSend == true ? 'True' : 'False');
         $sBt = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS, 4);
         $sDebugTraceLog = serialize($sBt);
         $sMailHeaderLog = ($sMailHeader == '' ? 'Empty' : $sMailHeader);
         $sEmailNotifyLog = ($sEmailNotify == '' ? 'Empty' : $sEmailNotify);
         $aRecipientInfoLog = serialize($aRecipientInfo);
         $sQuery = "INSERT INTO `sys_email_log` (`email`, `subject`, `encodedsubject`, `body`, `header`, `emailnotify`, `params`, `recipientinfo`, `html`, `debug`, `timestamp`) VALUES (?, ?, ?, ?, ?, ?, ?, ?, ?, ?, NOW())";
         $GLOBALS['MySQL']->query($sQuery, [$sRecipientEmailLog, $sMailSubjectLog, $sMailSubjectEncodedLog, $sMailBodyLog, $sMailHeaderLog, $sEmailNotifyLog, $aPlusLog, $aRecipientInfoLog, $sEmailFlagLog, $sDebugTraceLog]);
    }
 
 
     if (!$isDisableAlert && 'on' == getParam('ch_smtp_on')) {
         return ChWsbService::call('smtpmailer', 'send', array(
             $sRecipientEmail,
             $sMailSubjectEncoded,
             $sMailBody,
             $sMailHeader,
             $sMailParameters,
             'html' == $sEmailFlag,
             $aRecipientInfo
         ));
     }
 
     if ('html' == $sEmailFlag) {
         $sMailHeader    = "Content-type: text/html; charset=UTF-8\r\n" . $sMailHeader;
         $iSendingResult = mail($sRecipientEmail, $sMailSubjectEncoded, $sMailBody, $sMailHeader, $sMailParameters);
     } else {
         $sMailHeader    = "Content-type: text/plain; charset=UTF-8\r\n" . $sMailHeader;
         $sMailBody      = html2txt($sMailBody);
         $iSendingResult = mail($sRecipientEmail, $sMailSubjectEncoded, html2txt($sMailBody), $sMailHeader, $sMailParameters);
     }
 
     if (!$isDisableAlert) {
         //--- create system event
         ch_import('ChWsbAlerts');
         $aAlertData = array(
             'email'   => $sRecipientEmail,
             'subject' => $sMailSubjectEncoded,
             'body'    => $sMailBody,
             'header'  => $sMailHeader,
             'params'  => $sMailParameters,
             'html'    => 'html' == $sEmailFlag ? true : false,
         );
 
         $oZ = new ChWsbAlerts('profile', 'send_mail', $iRecipientID, '', $aAlertData);
         $oZ->alert();
     }
 
    return $iSendingResult;
}
 
/*
 * Getting Array with Templates Names
*/
 
function get_templates_array($isAllParams = false)
{
    $aTempls = array();
    $sPath   = CH_DIRECTORY_PATH_ROOT . 'templates/';
    $sUrl    = CH_WSB_URL_ROOT . 'templates/';
 
    if (!($handle = opendir($sPath))) {
        return array();
    }
 
    while (false !== ($sFileName = readdir($handle))) {
 
        if (!is_dir($sPath . $sFileName) || 0 !== strncmp($sFileName, 'tmpl_', 5)) {
            continue;
        }
 
        $sTemplName    = substr($sFileName, 5);
        $sTemplVer     = _t('_undefined');
        $sTemplVendor  = _t('_undefined');
        $sTemplDesc    = '';
        $sTemplPreview = 'preview.jpg';
        $sPreviewImg   = false;
 
        if (file_exists($sPath . $sFileName . '/scripts/ChTemplName.php')) {
            @include($sPath . $sFileName . '/scripts/ChTemplName.php');
        }
        if ($isAllParams && $sTemplPreview && file_exists($sPath . $sFileName . '/images/' . $sTemplPreview)) {
            $sPreviewImg = $sUrl . $sFileName . '/images/' . $sTemplPreview;
        }
 
        $aTempls[substr($sFileName, 5)] = $isAllParams ? array(
            'name'    => $sTemplName,
            'ver'     => $sTemplVer,
            'vendor'  => $sTemplVendor,
            'desc'    => $sTemplDesc,
            'preview' => $sPreviewImg
        ) : $sTemplName;
    }
 
    closedir($handle);
 
    return $aTempls;
}
 
/*
 * The Function Show a Line with Templates Names
 */
 
function templates_select_txt()
{
    $templ_choices    = get_templates_array();
    $current_template = (strlen($_GET['skin'])) ? $_GET['skin'] : $_COOKIE['skin'];
 
    foreach ($templ_choices as $tmpl_key => $tmpl_value) {
        if ($current_template == $tmpl_key) {
            $ReturnResult .= $tmpl_value . ' | ';
        } else {
            $sGetTransfer = ch_encode_url_params($_GET, array('skin'));
            $ReturnResult .= '<a href="' . ch_html_attribute($_SERVER['PHP_SELF']) . '?' . $sGetTransfer . 'skin=' . $tmpl_key . '">' . $tmpl_value . '</a> | ';
        }
    }
 
    return $ReturnResult;
}
 
function extFileExists($sFileSrc)
{
    return (file_exists($sFileSrc) && is_file($sFileSrc)) ? true : false;
}
 
function getVisitorIP($isProxyCheck = true)
{
    if (!$isProxyCheck) {
        return $_SERVER['REMOTE_ADDR'];
    }
 
    $ip = $_SERVER['REMOTE_ADDR'];
    if ((isset($_SERVER['HTTP_X_FORWARDED_FOR'])) && !empty($_SERVER['HTTP_X_FORWARDED_FOR'])) {
        $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
    } elseif ((isset($_SERVER['HTTP_X_REAL_IP'])) && !empty($_SERVER['HTTP_X_REAL_IP'])) {
        $ip = $_SERVER['HTTP_X_REAL_IP'];
    } elseif ((isset($_SERVER['HTTP_CLIENT_IP'])) && !empty($_SERVER['HTTP_CLIENT_IP'])) {
        $ip = $_SERVER['HTTP_CLIENT_IP'];
    }
 
    if (!preg_match("/^\d+\.\d+\.\d+\.\d+$/", $ip)) {
        $ip = $_SERVER['REMOTE_ADDR'];
    }
 
    return $ip;
}
 
function genFlag($country)
{
    return '<img src="' . genFlagUrl($country) . '" />';
}
 
function genFlagUrl($country)
{
    return $GLOBALS['site']['flags'] . strtolower($country) . '.gif';
}
 
// print debug information ( e.g. arrays )
function echoDbg($what, $desc = '')
{
    if ($desc) {
        echo "<b>$desc:</b> ";
    }
    echo "<pre>";
    print_r($what);
    echo "</pre>\n";
}
 
function echoDbgLog($mWhat, $sDesc = '', $sFileName = 'debug.log')
{
    global $dir;
 
    $sCont =
        '--- ' . date('r') . ' (' . CH_WSB_START_TIME . ") ---\n" .
        $sDesc . "\n" .
        print_r($mWhat, true) . "\n\n\n";
 
    $rFile = fopen($dir['tmp'] . $sFileName, 'a');
    fwrite($rFile, $sCont);
    fclose($rFile);
}
 
function clear_xss($val)
{
    // HTML Purifier plugin
    global $oHtmlPurifier;
    if (!isset($oHtmlPurifier) && !$GLOBALS['logged']['admin']) {
 
        require_once(CH_DIRECTORY_PATH_PLUGINS . 'htmlpurifier/HTMLPurifier.standalone.php');
 
        HTMLPurifier_Bootstrap::registerAutoload();
 
        $oConfig = HTMLPurifier_Config::createDefault();
 
        $oConfig->set('Cache.SerializerPath', rtrim(CH_DIRECTORY_PATH_CACHE, '/'));
        $oConfig->set('Cache.SerializerPermissions', 0777);
 
        $oConfig->set('HTML.SafeObject', 'true');
        $oConfig->set('Output.FlashCompat', 'true');
        $oConfig->set('HTML.FlashAllowFullScreen', 'true');
 
        if (getParam('sys_antispam_add_nofollow')) {
            $sHost = parse_url(CH_WSB_URL_ROOT, PHP_URL_HOST);
            $oConfig->set('URI.Host', $sHost);
            $oConfig->set('HTML.Nofollow', 'true');
        }
 
        if ($sSafeIframeRegexp = getParam('sys_safe_iframe_regexp')) {
            $oConfig->set('HTML.SafeIframe', 'true');
            $oConfig->set('URI.SafeIframeRegexp', $sSafeIframeRegexp);
        }
 
        $oConfig->set('Filter.Custom', array(
            new HTMLPurifier_Filter_LocalMovie(),
            new HTMLPurifier_Filter_YouTube(),
            new HTMLPurifier_Filter_YoutubeIframe(),
            new HTMLPurifier_Filter_AddChLinksClass()
        ));
 
        $oConfig->set('HTML.DefinitionID', 'html5-definitions');
        $oConfig->set('HTML.DefinitionRev', 1);
        if ($def = $oConfig->maybeGetRawHTMLDefinition()) {
            $def->addElement('section', 'Block', 'Flow', 'Common');
            $def->addElement('nav',     'Block', 'Flow', 'Common');
            $def->addElement('article', 'Block', 'Flow', 'Common');
            $def->addElement('aside',   'Block', 'Flow', 'Common');
            $def->addElement('header',  'Block', 'Flow', 'Common');
            $def->addElement('footer',  'Block', 'Flow', 'Common');
            $def->addElement('video', 'Block', 'Optional: (source, Flow) | (Flow, source) | Flow', 'Common', array(
                'src' => 'URI',
                'type' => 'Text',
                'width' => 'Length',
                'height' => 'Length',
                'poster' => 'URI',
                'preload' => 'Enum#auto,metadata,none',
                'controls' => 'Bool',
            ));
            $def->addElement('source', 'Block', 'Flow', 'Common', array(
                'src' => 'URI',
                'type' => 'Text',
            ));
            $def->addAttribute('a', 'target', 'Enum#_blank,_self,_target,_top');
        }
 
        $oHtmlPurifier = new HTMLPurifier($oConfig);
    }
 
    if (!$GLOBALS['logged']['admin']) {
        $val = $oHtmlPurifier->purify($val);
    }
 
    $oZ = new ChWsbAlerts('system', 'clear_xss', 0, 0,
        array('oHtmlPurifier' => $oHtmlPurifier, 'return_data' => &$val));
    $oZ->alert();
 
    $val = wrapVideoFrame($val);
 
    return $val;
}
 
function _format_when($iSec, $bShort = false)
{
    $s       = '';
    $sSuffix = $bShort ? '_short' : '';
    if ($iSec >= 0) {
        if ($iSec < 3600) {
            $i = round($iSec / 60);
            $s .= (0 == $i || 1 == $i) ? _t('_just_now') : _t('_x_minutes_ago' . $sSuffix, $i);
        } else {
            if ($iSec < 86400) {
                $i = round($iSec / 60 / 60);
                $s .= ((0 == $i || 1 == $i) && !$bShort) ? _t('_x_hour_ago') : _t('_x_hours_ago' . $sSuffix, $i);
            } else {
                $i = round($iSec / 60 / 60 / 24);
                $s .= (0 == $i || 1 == $i) ? _t('_yesterday') : _t('_x_days_ago' . $sSuffix, $i);
            }
        }
    } else {
        if ($iSec > -3600) {
            $i = round($iSec / 60);
            $s .= (0 == $i || 1 == $i) ? _t('_just_now') : _t('_in_x_minutes' . $sSuffix, -$i);
        } else {
            if ($iSec > -86400) {
                $i = round($iSec / 60 / 60);
                $s .= ((0 == $i || 1 == $i) && !$bShort) ? _t('_in_x_hour') : _t('_in_x_hours' . $sSuffix, -$i);
            } elseif ($iSec < -86400) {
                $i = round($iSec / 60 / 60 / 24);
                $s .= (0 == $i || 1 == $i) ? _t('_tomorrow') : _t('_in_x_days' . $sSuffix, -$i);
            }
        }
    }
 
    return $s;
}
 
function _format_time($iSec, $aParams = array())
{
    $sDivider = isset($aParams['divider']) ? $aParams['divider'] : ':';
 
    $iSec    = (int)$iSec;
    $sFormat = $iSec > 3600 ? 'H' . $sDivider . 'i' . $sDivider . 's' : 'i' . $sDivider . 's';
 
    return gmdate($sFormat, $iSec);
}
 
function defineTimeInterval($iTime, $bAutoDateConvert = true, $bShort = false)
{
    $iTimeDiff = time() - (int)$iTime;
 
    if ($bAutoDateConvert && $iTimeDiff > 14 * 24 * 60 * 60) // don't show "ago" dates for more than 14 days
    {
        return getLocaleDate((int)$iTime);
    }
 
    return _format_when($iTimeDiff, $bShort);
}
 
function execSqlFile($sFileName)
{
    if (!$f = fopen($sFileName, "r")) {
        return false;
    }
 
    db_res("SET NAMES 'utf8'");
 
    $s_sql = "";
    while ($s = fgets($f, 10240)) {
        $s = trim($s); //Utf with BOM only
 
        if (!strlen($s)) {
            continue;
        }
        if (mb_substr($s, 0, 1) == '#') {
            continue;
        } //pass comments
        if (mb_substr($s, 0, 2) == '--') {
            continue;
        }
 
        $s_sql .= $s;
 
        if (mb_substr($s, -1) != ';') {
            continue;
        }
 
        db_res($s_sql);
        $s_sql = "";
    }
 
    fclose($f);
 
    return true;
}
 
function replace_full_uris($text)
{
    $text = preg_replace_callback('/([\s\n\r]src\=")([^"]+)(")/', 'replace_full_uri', $text);
 
    return $text;
}
 
function replace_full_uri($matches)
{
    if (substr($matches[2], 0, 7) != 'http://' and substr($matches[2], 0, 8) != 'https://' and substr($matches[2], 0,
            6) != 'ftp://'
    ) {
        $matches[2] = CH_WSB_URL_ROOT . $matches[2];
    }
 
    return $matches[1] . $matches[2] . $matches[3];
}
 
//--------------------------------------- friendly permalinks --------------------------------------//
//------------------------------------------- main functions ---------------------------------------//
function uriGenerate($s, $sTable, $sField, $iMaxLen = 255)
{
    $s = uriFilter($s);
 
    if (uriCheckUniq($s, $sTable, $sField)) {
        return $s;
    }
 
    // try to add date
 
    if (get_mb_len($s) > 240) {
        $s = get_mb_substr($s, 0, 240);
    }
 
    $s .= '-' . date('Y-m-d');
 
    if (uriCheckUniq($s, $sTable, $sField)) {
        return $s;
    }
 
    // try to add number
 
    for ($i = 0; $i < 999; ++$i) {
        if (uriCheckUniq($s . '-' . $i, $sTable, $sField)) {
            return ($s . '-' . $i);
        }
    }
 
    return rand(0, 999999999);
}
 
function uriFilter($s)
{
    if ($GLOBALS['oTemplConfig']->bAllowUnicodeInPreg) {
        $s = get_mb_replace('/[^\pL^\pN]+/u', '-', $s);
    } // unicode characters
    else {
        $s = get_mb_replace('/([^\d^\w]+)/u', '-', $s);
    } // latin characters only
 
    $s = get_mb_replace('/([-^]+)/', '-', $s);
    $s = get_mb_replace('/([-]+)$/', '', $s); // remove trailing dash
    if (!$s) {
        $s = '-';
    }
 
    return $s;
}
 
function uriCheckUniq($s, $sTable, $sField)
{
    return !db_arr("SELECT 1 FROM $sTable WHERE $sField = '$s' LIMIT 1");
}
 
function get_mb_replace($sPattern, $sReplace, $s)
{
    return preg_replace($sPattern, $sReplace, $s);
}
 
function get_mb_len($s)
{
    return (function_exists('mb_strlen')) ? mb_strlen($s) : strlen($s);
}
 
function get_mb_substr($s, $iStart, $iLen)
{
    return (function_exists('mb_substr')) ? mb_substr($s, $iStart, $iLen) : substr($s, $iStart, $iLen);
}
 
function ch_block_ip($mixedIP, $iExpirationInSec = 86400, $sComment = '')
{
    if (preg_match('/^[0-9]+$/', $mixedIP)) {
        $iIP = $mixedIP;
    } else {
        $iIP = sprintf("%u", ip2long($sIP));
    }
 
    $iExpirationInSec = time() + (int)$iExpirationInSec;
    $sComment         = process_db_input($sComment, CH_TAGS_STRIP);
 
    if (!db_value("SELECT ID FROM `sys_ip_list` WHERE `From` = {$iIP} AND `To` = {$iIP} LIMIT 1")) {
        return db_res("INSERT INTO `sys_ip_list` SET `From` = {$iIP}, `To` = {$iIP}, `Type` = 'deny', `LastDT` = {$iExpirationInSec}, `Desc` = '{$sComment}'");
    }
 
    return false;
}
 
function ch_is_ip_dns_blacklisted($sCurIP = '', $sType = '')
{
    if (defined('CH_WSB_CRON_EXECUTE')) {
        return false;
    }
 
    if (!$sCurIP) {
        $sCurIP = getVisitorIP(false);
    }
 
    if (ch_is_ip_whitelisted()) {
        return false;
    }
 
    $o = ch_instance('ChWsbDNSBlacklists');
    if (CH_WSB_DNSBL_POSITIVE == $o->dnsbl_lookup_ip(CH_WSB_DNSBL_CHAIN_SPAMMERS,
            $sCurIP) && CH_WSB_DNSBL_POSITIVE != $o->dnsbl_lookup_ip(CH_WSB_DNSBL_CHAIN_WHITELIST, $sCurIP)
    ) {
        $o->onPositiveDetection($sCurIP, $sType);
 
        return true;
    }
 
    return false;
}
 
function ch_is_ip_whitelisted($sCurIP = '')
{
    if (defined('CH_WSB_CRON_EXECUTE')) {
        return true;
    }
 
    $iIPGlobalType = (int)getParam('ipListGlobalType');
    if ($iIPGlobalType != 1 && $iIPGlobalType != 2) // 0 - disabled
    {
        return false;
    }
 
    if (!$sCurIP) {
        $sCurIP = getVisitorIP();
    }
    $iCurIP    = sprintf("%u", ip2long($sCurIP));
    $iCurrTume = time();
 
    return db_value("SELECT `ID` FROM `sys_ip_list` WHERE `Type` = 'allow' AND `LastDT` > $iCurrTume AND `From` <= '$iCurIP' AND `To` >= '$iCurIP' LIMIT 1") ? true : false;
}
 
function ch_is_ip_blocked($sCurIP = '')
{
    if (defined('CH_WSB_CRON_EXECUTE')) {
        return false;
    }
 
    $iIPGlobalType = (int)getParam('ipListGlobalType');
    if ($iIPGlobalType != 1 && $iIPGlobalType != 2) // 0 - disabled
    {
        return false;
    }
 
    if (!$sCurIP) {
        $sCurIP = getVisitorIP();
    }
    $iCurIP    = sprintf("%u", ip2long($sCurIP));
    $iCurrTume = time();
 
    if (ch_is_ip_whitelisted($sCurIP)) {
        return false;
    }
 
    $isBlocked = db_value("SELECT `ID` FROM `sys_ip_list` WHERE `Type` = 'deny' AND `LastDT` > $iCurrTume AND `From` <= '$iCurIP' AND `To` >= '$iCurIP' LIMIT 1");
    if ($isBlocked) {
        return true;
    }
 
    // 1 - all allowed except listed
    // 2 - all blocked except listed
    return $iIPGlobalType == 2 ? true : false;
}
 
function ch_is_spam($val)
{
    if (defined('CH_WSB_CRON_EXECUTE')) {
        return false;
    }
 
    if (isAdmin()) {
        return false;
    }
 
    if (ch_is_ip_whitelisted()) {
        return false;
    }
 
    $bRet = false;
    if ('on' == getParam('sys_uridnsbl_enable')) {
        $oChWsbDNSURIBlacklists = ch_instance('ChWsbDNSURIBlacklists');
        if ($oChWsbDNSURIBlacklists->isSpam($val)) {
            $oChWsbDNSURIBlacklists->onPositiveDetection($val);
            $bRet = true;
        }
    }
 
    if ('on' == getParam('sys_akismet_enable')) {
        $oChWsbAkismet = ch_instance('ChWsbAkismet');
        if ($oChWsbAkismet->isSpam($val)) {
            $oChWsbAkismet->onPositiveDetection($val);
            $bRet = true;
        }
    }
 
    if ($bRet && 'on' == getParam('sys_antispam_report')) {
        ch_import('ChWsbEmailTemplates');
        $oEmailTemplates = new ChWsbEmailTemplates();
        $aTemplate       = $oEmailTemplates->getTemplate('t_SpamReportAuto', 0);
 
        $iProfileId = getLoggedId();
        $aPlus      = array(
            'SpammerUrl'      => getProfileLink($iProfileId),
            'SpammerNickName' => getNickName($iProfileId),
            'Page'            => htmlspecialchars_adv($_SERVER['PHP_SELF']),
            'Get'             => print_r($_GET, true),
            'SpamContent'     => htmlspecialchars_adv($val),
        );
 
        sendMail($GLOBALS['site']['email'], $aTemplate['Subject'], $aTemplate['Body'], '', $aPlus);
    }
 
    if ($bRet && 'on' == getParam('sys_antispam_block')) {
        return true;
    }
 
    return false;
}
 
function getmicrotime()
{
    list($usec, $sec) = explode(" ", microtime());
 
    return ((float)$usec + (float)$sec);
}
 
function genSiteStatCache()
{
    $sqlQuery = "SELECT `Name` as `name`,
                        `Title` as `capt`,
                        `UserQuery` as `query`,
                        `UserLink` as `link`,
                        `IconName` as `icon`,
                        `AdminQuery` as `adm_query`,
                           `AdminLink` as `adm_link`
                        FROM `sys_stat_site`
                        ORDER BY `StatOrder` ASC, `ID` ASC";
 
    $rData = db_res($sqlQuery);
 
    $sLine = "return array( \n";
    while ($aVal = $rData->fetch()) {
        $sLine .= genSiteStatFile($aVal);
    }
    $sLine = rtrim($sLine, ",\n") . "\n);";
 
    $aResult = eval($sLine);
 
    $oCache = $GLOBALS['MySQL']->getDbCacheObject();
 
    return $oCache->setData($GLOBALS['MySQL']->genDbCacheKey('sys_stat_site'), $aResult);
}
 
function genSiteStatFile($aVal)
{
    $oMenu = new ChWsbMenu();
 
    $sLink    = $oMenu->getCurrLink($aVal['link']);
    $sAdmLink = $oMenu->getCurrLink($aVal['adm_link']);
    $sLine    = "'{$aVal['name']}'=>array('capt'=>'{$aVal['capt']}', 'query'=>'" . addslashes($aVal['query']) . "', 'link'=>'$sLink', 'icon'=>'{$aVal['icon']}', 'adm_query'=>'" . addslashes($aVal['adm_query']) . "', 'adm_link'=>'$sAdmLink', ),\n";
 
    return $sLine;
}
 
function getSiteStatArray()
{
    $oCache = $GLOBALS['MySQL']->getDbCacheObject();
    $aStats = $oCache->getData($GLOBALS['MySQL']->genDbCacheKey('sys_stat_site'));
    if ($aStats === null) {
        genSiteStatCache();
        $aStats = $oCache->getData($GLOBALS['MySQL']->genDbCacheKey('sys_stat_site'));
    }
 
    if (!$aStats) {
        $aStats = array();
    }
 
    return $aStats;
}
 
function getClearedParam($sExceptParam, $sString)
{
    return preg_replace("/(&amp;|&){$sExceptParam}=([a-z0-9\_\-]{1,})/i", '', $sString);
}
 
function ch_import($sClassName, $aModule = array())
{
    if (class_exists($sClassName)) {
        return;
    }
 
    if ($aModule) {
        $a = (true === $aModule) ? $GLOBALS['aModule'] : $aModule;
        if (class_exists($a['class_prefix'] . $sClassName)) {
            return;
        }
        require_once(CH_DIRECTORY_PATH_MODULES . $a['path'] . 'classes/' . $a['class_prefix'] . $sClassName . '.php');
    }
 
    if (0 === strncmp($sClassName, 'ChWsb', 5)) {
        require_once(CH_DIRECTORY_PATH_CLASSES . $sClassName . '.php');
 
        return;
    }
    if (0 === strncmp($sClassName, 'ChBase', 6)) {
        require_once(CH_DIRECTORY_PATH_BASE . 'scripts/' . $sClassName . '.php');
 
        return;
    }
    if (0 === strncmp($sClassName, 'ChTempl', 7) && !class_exists($sClassName)) {
        if (isset($GLOBALS['iAdminPage']) && (int)$GLOBALS['iAdminPage'] == 1) {
            if (!defined('CH_WSB_TEMPLATE_DEFAULT_CODE')) {
                require_once(CH_DIRECTORY_PATH_CLASSES . 'ChWsbTemplate.php');
            }
            require_once(CH_DIRECTORY_PATH_ROOT . "templates/tmpl_" . CH_WSB_TEMPLATE_DEFAULT_CODE . "/scripts/" . $sClassName . '.php');
        } else {
            require_once(CH_DIRECTORY_PATH_ROOT . "templates/tmpl_{$GLOBALS['tmpl']}/scripts/" . $sClassName . '.php');
        }
 
        return;
    }
}
 
function ch_instance($sClassName, $aParams = array(), $aModule = array())
{
    if (isset($GLOBALS['chWsbClasses'][$sClassName])) {
        return $GLOBALS['chWsbClasses'][$sClassName];
    } else {
        ch_import((empty($aModule) ? $sClassName : str_replace($aModule['class_prefix'], '', $sClassName)), $aModule);
 
        if (empty($aParams)) {
            $GLOBALS['chWsbClasses'][$sClassName] = new $sClassName();
        } else {
            $sParams = "";
            foreach ($aParams as $mixedKey => $mixedValue) {
                $sParams .= "\$aParams[" . $mixedKey . "], ";
            }
            $sParams = substr($sParams, 0, -2);
 
            $GLOBALS['chWsbClasses'][$sClassName] = eval("return new " . $sClassName . "(" . $sParams . ");");
        }
 
        return $GLOBALS['chWsbClasses'][$sClassName];
    }
}
 
function ch_js_string($mixedInput, $iQuoteType = CH_ESCAPE_STR_AUTO)
{
    $aUnits = array(
        "\n" => "\\n",
        "\r" => "",
    );
    if (CH_ESCAPE_STR_APOS == $iQuoteType) {
        $aUnits["'"]         = "\\'";
        $aUnits['<script']   = "<scr' + 'ipt";
        $aUnits['</script>'] = "</scr' + 'ipt>";
    } elseif (CH_ESCAPE_STR_QUOTE == $iQuoteType) {
        $aUnits['"']         = '\\"';
        $aUnits['<script']   = '<scr" + "ipt';
        $aUnits['</script>'] = '</scr" + "ipt>';
    } else {
        $aUnits['"'] = '&quote;';
        $aUnits["'"] = '&apos;';
        $aUnits["<"] = '&lt;';
        $aUnits[">"] = '&gt;';
    }
 
    return str_replace(array_keys($aUnits), array_values($aUnits), $mixedInput);
}
 
function ch_html_attribute($mixedInput)
{
    $aUnits = array(
        "\"" => "&quot;",
        "'"  => "&apos;",
    );
 
    return str_replace(array_keys($aUnits), array_values($aUnits), $mixedInput);
}
 
function ch_php_string_apos($mixedInput)
{
    return str_replace("'", "\\'", $mixedInput);
}
 
function ch_php_string_quot($mixedInput)
{
    return str_replace('"', '\\"', $mixedInput);
}
 
function ch_file_get_contents($sFileUrl, $aParams = array(), $sMethod = 'get', $aHeaders = array(), &$sHttpCode = null)
{
    if ('post' != $sMethod) {
        $sFileUrl = ch_append_url_params($sFileUrl, $aParams);
    }
 
    $sResult = '';
    if (function_exists('curl_init')) {
        $rConnect = curl_init();
 
        curl_setopt($rConnect, CURLOPT_TIMEOUT, 10);
        curl_setopt($rConnect, CURLOPT_URL, $sFileUrl);
        curl_setopt($rConnect, CURLOPT_HEADER, null === $sHttpCode ? false : true);
        curl_setopt($rConnect, CURLOPT_RETURNTRANSFER, 1);
 
        if (!ini_get('open_basedir')) {
            curl_setopt($rConnect, CURLOPT_FOLLOWLOCATION, 1);
        }
 
        if ($aHeaders) {
            curl_setopt($rConnect, CURLOPT_HTTPHEADER, $aHeaders);
        }
 
        if ('post' == $sMethod) {
            curl_setopt($rConnect, CURLOPT_POST, true);
            curl_setopt($rConnect, CURLOPT_POSTFIELDS, $aParams);
        }
 
        $sAllCookies = '';
        foreach ($_COOKIE as $sKey => $sValue) {
            $sAllCookies .= $sKey . '=' . $sValue . ';';
        }
        curl_setopt($rConnect, CURLOPT_COOKIE, $sAllCookies);
 
        $sResult = curl_exec($rConnect);
 
        if (curl_errno($rConnect) == 60) { // CURLE_SSL_CACERT
            curl_setopt($rConnect, CURLOPT_CAINFO, CH_DIRECTORY_PATH_PLUGINS . 'curl/cacert.pem');
            $sResult = curl_exec($rConnect);
        }
 
        if (null !== $sHttpCode) {
            $sHttpCode = curl_getinfo($rConnect, CURLINFO_HTTP_CODE);
        }
 
        curl_close($rConnect);
    } else {
        $sResult = @file_get_contents($sFileUrl);
    }
 
    return $sResult;
}
 
function writeLog($sNewLineText = 'test')
{
    $sFileName = CH_DIRECTORY_PATH_ROOT . 'tmp/log.txt';
 
    if (is_writable($sFileName)) {
        if (!$vHandle = fopen($sFileName, 'a')) {
            echo "Unable to open ({$sFileName})";
        }
        if (fwrite($vHandle, $sNewLineText . "\r\n") === false) {
            echo "Unable write to ({$sFileName})";
        }
        fclose($vHandle);
 
    } else {
        echo "{$sFileName} is not writeable";
    }
}
 
function getLink($sString, $sUrl)
{
    return '<a href="' . $sUrl . '">' . $sString . '</a> ';
}
 
function getLinkSet($sLinkString, $sUrlPrefix, $sDivider = ';,', $bUriConvert = false)
{
    $aSet      = preg_split('/[' . $sDivider . ']/', $sLinkString, 0, PREG_SPLIT_NO_EMPTY);
    $sFinalSet = '';
 
    foreach ($aSet as $sKey) {
        $sLink = $sUrlPrefix . urlencode($bUriConvert ? title2uri($sKey) : $sKey);
        $sFinalSet .= '<a href="' . $sUrlPrefix . urlencode(title2uri(trim($sKey))) . '">' . $sKey . '</a> ';
    }
 
    return trim($sFinalSet, ' ');
}
 
function getRelatedWords(&$aInfo)
{
    $sString = implode(' ', $aInfo);
    $aRes    = array_unique(explode(' ', $sString));
    $sString = implode(' ', $aRes);
 
    return addslashes($sString);
}
 
function getSiteInfo($sSourceUrl, $aProcessAdditionalTags = array())
{
    $aResult  = array();
    $sContent = ch_file_get_contents($sSourceUrl);
 
    if ($sContent) {
        $sCharset = '';
        preg_match("/<meta.+charset=([A-Za-z0-9-]+).+>/i", $sContent, $aMatch);
        if (isset($aMatch[1])) {
            $sCharset = $aMatch[1];
        }
 
        if (preg_match("/<title[^>]*>(.*)<\/title>/i", $sContent, $aMatch)) {
            $aResult['title'] = $aMatch[1];
        } else {
            $aResult['title'] = parse_url($sSourceUrl, PHP_URL_HOST);
        }
 
        $aResult['description'] = ch_parse_html_tag($sContent, 'meta', 'name', 'description', 'content', $sCharset);
        $aResult['keywords']    = ch_parse_html_tag($sContent, 'meta', 'name', 'keywords', 'content', $sCharset);
 
        if ($aProcessAdditionalTags) {
 
            foreach ($aProcessAdditionalTags as $k => $a) {
                $aResult[$k] = ch_parse_html_tag(
                    $sContent,
                    isset($a['tag']) ? $a['tag'] : 'meta',
                    isset($a['name_attr']) ? $a['name_attr'] : 'itemprop',
                    isset($a['name']) ? $a['name'] : $k,
                    isset($a['content_attr']) ? $a['content_attr'] : 'content',
                    $sCharset);
            }
 
        }
    }
 
    return $aResult;
}
 
function ch_parse_html_tag($sContent, $sTag, $sAttrNameName, $sAttrNameValue, $sAttrContentName, $sCharset = false)
{
    if (!preg_match("/<{$sTag}\s+{$sAttrNameName}[='\" ]+{$sAttrNameValue}['\"]\s+{$sAttrContentName}[='\" ]+([^'>\"]*)['\"][^>]*>/i",
            $sContent, $aMatch) || !isset($aMatch[1])
    ) {
        preg_match("/<{$sTag}\s+{$sAttrContentName}[='\" ]+([^'>\"]*)['\"]\s+{$sAttrNameName}[='\" ]+{$sAttrNameValue}['\"][^>]*>/i",
            $sContent, $aMatch);
    }
 
    $s = isset($aMatch[1]) ? $aMatch[1] : '';
 
    if ($s && $sCharset) {
        $s = mb_convert_encoding($s, 'UTF-8', $sCharset);
    }
 
    return $s;
}
 
function ch_parse_time_duration($sContent)
{
    if (!$sContent || !is_string($sContent) || 'P' != strtoupper($sContent[0])) {
        return false;
    }
 
    $a      = array('D' => 86400, 'H' => 3600, 'M' => '60', 'S' => 1);
    $iTotal = 0;
    foreach ($a as $sLetter => $iSec) {
        if (preg_match('/(\d+)[' . $sLetter . ']{1}/i', $sContent, $aMatch) && $aMatch[1]) {
            $iTotal += (int)$aMatch[1] * $iSec;
        }
    }
 
    return $iTotal;
}
 
// simple comparator for strings etc
function simple_cmp($a, $b)
{
    if ($a == $b) {
        return 0;
    }
 
    return ($a < $b) ? -1 : 1;
}
 
function format_bytes($bytes, $shorter = false)
{
    $units = [
        true  => [
            'GB'    => 'G',
            'MB'    => 'M',
            'KB'    => 'K',
            'bytes' => 'B',
            'byte'  => 'B'
        ],
        false => [
            'GB'    => ' GB',
            'MB'    => ' MB',
            'KB'    => ' KB',
            'bytes' => ' bytes',
            'byte'  => ' byte'
        ]
    ];
 
    if ($bytes >= 1073741824) {
        $bytes = number_format($bytes / 1073741824, 2) . $units[$shorter]['GB'];
    } elseif ($bytes >= 1048576) {
        $bytes = number_format($bytes / 1048576, 2) . $units[$shorter]['MB'];
    } elseif ($bytes >= 1024) {
        $bytes = number_format($bytes / 1024, 2) . $units[$shorter]['KB'];
    } elseif ($bytes > 1) {
        $bytes = $bytes . $units[$shorter]['bytes'];
    } elseif ($bytes == 1) {
        $bytes = $bytes . $units[$shorter]['byte'];
    } else {
        $bytes = '0' . $units[$shorter]['bytes'];
    }
 
    return $bytes;
}
 
// calculation ini_get('upload_max_filesize') in bytes as example
function return_bytes($val)
{
    $val = trim($val);
    if (strlen($val) < 2) {
        return $val;
    }
 
    $last = strtolower($val{strlen($val) - 1});
 
    $val = (int)$val;
    switch ($last) {
        // The 'G' modifier is available since PHP 5.1.0
        case 'k':
            $val *= 1024;
            break;
        case 'm':
            $val *= 1024 * 1024;
            break;
        case 'g':
            $val *= 1024 * 1024 * 1024;
            break;
    }
 
    return $val;
}
 
// Generate Random Password
function genRndPwd($iLength = 8, $bSpecialCharacters = true)
{
    $sPassword = '';
    $sChars    = "abcdefghijkmnpqrstuvwxyzABCDEFGHJKLMNPQRSTUVWXYZ23456789";
 
    if ($bSpecialCharacters === true) {
        $sChars .= "!?=/&+,.";
    }
 
    srand((double)microtime() * 1000000);
    for ($i = 0; $i < $iLength; $i++) {
        $x = mt_rand(0, strlen($sChars) - 1);
        $sPassword .= $sChars{$x};
    }
 
    return $sPassword;
}
 
// Generate Random Salt for Password encryption
function genRndSalt()
{
    return genRndPwd(8, true);
}
 
// Encrypt User Password
function encryptUserPwd($sPwd, $sSalt)
{
    return sha1(md5($sPwd) . $sSalt);
}
 
// Advanced stripslashes. Strips strings and arrays
function stripslashes_adv($s)
{
    if (is_string($s)) {
        return stripslashes($s);
    } elseif (is_array($s)) {
        foreach ($s as $k => $v) {
            $s[$k] = stripslashes($v);
        }
 
        return $s;
    } else {
        return $s;
    }
}
 
function ch_get($sName)
{
    if (isset($_GET[$sName])) {
        return $_GET[$sName];
    } elseif (isset($_POST[$sName])) {
        return $_POST[$sName];
    } else {
        return false;
    }
}
 
function ch_encode_url_params($a, $aExcludeKeys = array(), $aOnlyKeys = false)
{
    $s = '';
    foreach ($a as $sKey => $sVal) {
        if (in_array($sKey, $aExcludeKeys)) {
            continue;
        }
        if (false !== $aOnlyKeys && !in_array($sKey, $aOnlyKeys)) {
            continue;
        }
        if (is_array($sVal)) {
            foreach ($sVal as $sSubVal) {
                $s .= rawurlencode($sKey) . '[]=' . rawurlencode(is_array($sSubVal) ? 'array' : $sSubVal) . '&';
            }
        } else {
            $s .= rawurlencode($sKey) . '=' . rawurlencode($sVal) . '&';
        }
    }
 
    return $s;
}
 
function ch_append_url_params($sUrl, $mixedParams)
{
    $sParams = false == strpos($sUrl, '?') ? '?' : '&';
 
    if (is_array($mixedParams)) {
        foreach ($mixedParams as $sKey => $sValue) {
            $sParams .= $sKey . '=' . $sValue . '&';
        }
        $sParams = substr($sParams, 0, -1);
    } else {
        $sParams .= $mixedParams;
    }
 
    return $sUrl . $sParams;
}
 
function ch_rrmdir($directory)
{
    if (substr($directory, -1) == "/") {
        $directory = substr($directory, 0, -1);
    }
 
    if (!file_exists($directory) || !is_dir($directory)) {
        return false;
    } elseif (!is_readable($directory)) {
        return false;
    }
 
    if (!($directoryHandle = opendir($directory))) {
        return false;
    }
 
    while ($contents = readdir($directoryHandle)) {
        if ($contents != '.' && $contents != '..') {
            $path = $directory . "/" . $contents;
 
            if (is_dir($path)) {
                ch_rrmdir($path);
            } else {
                unlink($path);
            }
        }
    }
 
    closedir($directoryHandle);
 
    if (!rmdir($directory)) {
        return false;
    }
 
    return true;
}
 
function ch_clear_folder($sPath, $aExts = array())
{
    if (substr($$sPath, -1) == "/") {
        $sPath = substr($sPath, 0, -1);
    }
 
    if (!file_exists($sPath) || !is_dir($sPath)) {
        return false;
    } elseif (!is_readable($sPath)) {
        return false;
    }
 
    if (!($h = opendir($sPath))) {
        return false;
    }
 
    while ($sFile = readdir($h)) {
        if ('.' == $sFile || '..' == $sFile) {
            continue;
        }
 
        $sFullPath = $sPath . '/' . $sFile;
 
        if (is_dir($sFullPath)) {
            continue;
        }
 
        if (!$aExts || (($sExt = pathinfo($sFullPath, PATHINFO_EXTENSION)) && in_array($sExt, $aExts))) {
            @unlink($sFullPath);
        }
    }
 
    closedir($h);
 
    return true;
}
 
function ch_ltrim_str($sString, $sPrefix, $sReplace = '')
{
    if ($sReplace && substr($sString, 0, strlen($sReplace)) == $sReplace) {
        return $sString;
    }
    if (substr($sString, 0, strlen($sPrefix)) == $sPrefix) {
        return $sReplace . substr($sString, strlen($sPrefix));
    }
 
    return $sString;
}
 
function ch_member_ip_store($iMemberId, $sIP = false)
{
    if (getParam('enable_member_store_ip') != 'on') {
        return false;
    }
 
    $sCurLongIP = sprintf("%u", ip2long($sIP ? $sIP : getVisitorIP()));
 
    return db_res("INSERT INTO `sys_ip_members_visits` SET `MemberID` = " . (int)$iMemberId . ", `From` = '" . $sCurLongIP . "', `DateTime` = NOW()");
}
 
function ch_member_ip_get_last($iMemberId)
{
    $sLongIP = db_value("SELECT `From` FROM `sys_ip_members_visits` WHERE `MemberID` = " . (int)$iMemberId . " ORDER BY `DateTime` DESC");
 
    return long2ip($sLongIP);
}
 
function ch_show_service_unavailable_error_and_exit($sMsg = false, $iRetryAfter = 86400)
{
    header('HTTP/1.0 503 Service Unavailable', true, 503);
    header('Retry-After: 600');
    echo $sMsg ? $sMsg : 'Service temporarily unavailable';
    exit;
}
 
function ch_mkdir_r($sDirName, $rights = 0777)
{
    $sDirName = ch_ltrim_str($sDirName, CH_DIRECTORY_PATH_ROOT);
    $aDirs    = explode('/', $sDirName);
    $sDir     = '';
    foreach ($aDirs as $sPart) {
        $sDir .= $sPart . '/';
        if (!is_dir(CH_DIRECTORY_PATH_ROOT . $sDir) && strlen(CH_DIRECTORY_PATH_ROOT . $sDir) > 0 && !file_exists(CH_DIRECTORY_PATH_ROOT . $sDir)) {
            if (!mkdir(CH_DIRECTORY_PATH_ROOT . $sDir, $rights)) {
                return false;
            }
        }
    }
 
    return true;
}
 
function ch_proto($sUrl = CH_WSB_URL_ROOT)
{
    return 0 === strncmp('https', $sUrl, 5) ? 'https' : 'http';
}
 
function ch_linkify($text, $sAttrs = '', $bHtmlSpecialChars = false)
{
    if ($bHtmlSpecialChars) {
        $text = htmlspecialchars($text, ENT_NOQUOTES, 'UTF-8');
    }
 
    preg_match_all(CH_URL_RE, $text, $matches, PREG_OFFSET_CAPTURE);
 
    $matches = $matches[0];
 
    if ($i = count($matches)) {
        $bAddNofollow = getParam('sys_antispam_add_nofollow') == 'on';
    }
 
    while ($i--) {
        $url = $matches[$i][0];
        if (!preg_match('@^https?://@', $url)) {
            $url = 'http://' . $url;
        }
 
        if (strncmp(CH_WSB_URL_ROOT, $url, strlen(CH_WSB_URL_ROOT)) !== 0) {
            if (false === stripos($sAttrs, 'target="_blank"'))
                $sAttrs .= ' target="_blank" ';
            if ($bAddNofollow && false === stripos($sAttrs, 'rel="nofollow"'))
                $sAttrs .= ' rel="nofollow" ';
        }
 
        $text = substr_replace($text, '<a ' . $sAttrs . ' href="' . $url . '">' . $matches[$i][0] . '</a>',
            $matches[$i][1], strlen($matches[$i][0]));
    }
 
    return $text;
}
 
function ch_linkify_html($sHtmlOrig, $sAttrs = '')
{
    if (!trim($sHtmlOrig)) {
        return $sHtmlOrig;
    }
 
    $sId = 'ch-linkify-' . md5(microtime());
    $dom = new DOMDocument();
    @$dom->loadHTML('<?xml encoding="UTF-8"><div id="' . $sId . '">' . $sHtmlOrig . '</div>');
    $xpath = new DOMXpath($dom);
 
    foreach ($xpath->query('//text()') as $text) {
        $frag = $dom->createDocumentFragment();
        $frag->appendXML(ch_linkify($text->nodeValue, $sAttrs, true));
        $text->parentNode->replaceChild($frag, $text);
    }
 
    if (version_compare(PHP_VERSION, '5.3.6') >= 0) {
        $s = $dom->saveHTML($dom->getElementById($sId));
    } else {
        $s = $dom->saveXML($dom->getElementById($sId), LIBXML_NOEMPTYTAG);
    }
 
    if (false === $s) // in case of error return original string
    {
        return $sHtmlOrig;
    }
 
    if (false !== ($iPos = mb_strpos($s, '<html><body>')) && $iPos < mb_strpos($s, $sId)) {
        $s = mb_substr($s, $iPos + 12, -15);
    } // strip <html><body> tags and everything before them
 
    return mb_substr($s, 54, -6); // strip added tags
}
 
function ch_gen_method_name($s, $sWordsDelimiter = '_')
{
    return str_replace(' ', '', ucwords(str_replace($sWordsDelimiter, ' ', $s)));
}
 
function getPostFieldIfSet($sField)
{
    return (!isset($_POST[$sField])) ? null : $_POST[$sField];
}
 
function getGetFieldIfSet($sField)
{
    return (!isset($_GET[$sField])) ? null : $_GET[$sField];
}
 
function wrapVideoFrame($sData) {
    $iFound = stripos($sData, '<iframe');
    if($iFound === false) return $sData;
 
    // Reverse any that have allready been wrapped so it's not done twice.
    $pattern = '/(<div class="video-responsive">(<iframe.*(youtube\.com|youtu\.be|youtube-nocookie\.com).*iframe>)<\/div>)/i';
    $replacement = '$2';
    $sData = preg_replace($pattern, $replacement, $sData);
 
    // Now wrap it.
    $pattern = '/(<iframe.*(youtube\.com|youtu\.be|youtube-nocookie\.com).*iframe>)/i';
    $replacement = '<div class="video-responsive">$1</div>';
    $sData = preg_replace($pattern, $replacement, $sData);
 
    return $sData;
}
 
function getFfmpegPath()
{
    if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
        $sFfmpegPath = $GLOBALS['dir']['plugins'] . 'ffmpeg/ffmpeg.exe';
    } else {
        $sFfmpegPath = $GLOBALS['dir']['plugins'] . 'ffmpeg/ffmpeg';
    }
    return $sFfmpegPath;
}
 
function getFfprobePath()
{
    if (strtoupper(substr(PHP_OS, 0, 3)) === 'WIN') {
        $sFfprobePath = $GLOBALS['dir']['plugins'] . 'ffmpeg/ffprobe.exe';
    } else {
        $sFfprobePath = $GLOBALS['dir']['plugins'] . 'ffmpeg/ffprobe';
    }
    return $sFfprobePath;
}
 
function getVideoData($sFile) {
    $oHandle = popen(getFfprobePath() . ' -v quiet -print_format json -show_format -show_streams ' . $sFile . ' 2>&1', 'r');
    $sVideoData = '';
    while (!feof($oHandle)) {
        $sVideoData .= fread($oHandle, 4096);
    }
    pclose($oHandle);
    $aVideoData = json_decode($sVideoData, true);
    $sCodecName = $aVideoData['streams'][0]['codec_name'];
    $sVideoWidth = $aVideoData['streams'][0]['width'];
    $sVideoHeight = $aVideoData['streams'][0]['height'];
    $sAvgFrameRate = $aVideoData['streams'][0]['avg_frame_rate'];
    $sDurationTs = $aVideoData['streams'][0]['duration_ts'];
    $sDuration = $aVideoData['streams'][0]['duration'];
    $sBitRate = $aVideoData['streams'][0]['bit_rate'];
    return array('CodecName' => $sCodecName, 'VideoWidth' => $sVideoWidth, 'VideoHeight' => $sVideoHeight, 'AvgFrameRate' => $sAvgFrameRate, 'DurationTs' => $sDurationTs, 'Duration' => $sDuration, 'BitRate' => $sBitRate);
}
 
function getAudioData($sFile) {
    $oHandle = popen(getFfprobePath() . ' -v quiet -print_format json -show_format -show_streams ' . $sFile . ' 2>&1', 'r');
    $sAudioData = '';
    while (!feof($oHandle)) {
        $sAudioData .= fread($oHandle, 4096);
    }
    pclose($oHandle);
    $aAudioData = json_decode($sAudioData, true);
    file_put_contents($GLOBALS['dir']['tmp'] . 'test.dat', print_r($aAudioData, true), FILE_APPEND) . "\r\n\r\n";
    $sCodecName = $aAudioData['streams'][0]['codec_name'];
    $sDurationTs = $aAudioData['streams'][0]['duration_ts'];
    $sDuration = $aAudioData['streams'][0]['duration'];
    $sBitRate = $aAudioData['streams'][0]['bit_rate'];
    return array('CodecName' => $sCodecName, 'DurationTs' => $sDurationTs, 'Duration' => $sDuration, 'BitRate' => $sBitRate);
}