<?php

/***************************************************************************
*                            Dolphin Smart Community Builder
*                              -----------------
*     begin                : Mon Mar 23 2006
*     copyright            : (C) 2006 BoonEx Group
*     website              : http://www.boonex.com/
* This file is part of Dolphin - Smart Community Builder
*
* Dolphin is free software. This work is licensed under a Creative Commons Attribution 3.0 License. 
* http://creativecommons.org/licenses/by/3.0/
*
* Dolphin 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 Creative Commons Attribution 3.0 License for more details. 
* You should have received a copy of the Creative Commons Attribution 3.0 License along with Dolphin, 
* see license.txt file; if not, write to marketing@boonex.com
***************************************************************************/

require_once("header.inc.php");

bx_import('BxDolModule');
bx_import('BxDolEmailTemplates');

define('BX_DOL_LOCALE_TIME', 2);
define('BX_DOL_LOCALE_DATE_SHORT', 4);
define('BX_DOL_LOCALE_DATE', 5);

define('BX_DOL_LOCALE_PHP', 1);
define('BX_DOL_LOCALE_DB', 2);

define('BX_TAGS_NO_ACTION', 0); // default
define('BX_TAGS_STRIP', 1);
define('BX_TAGS_SPECIAL_CHARS', 8);
define('BX_TAGS_VALIDATE', 16); 
define('BX_TAGS_STRIP_AND_NL2BR', 32);

define('BX_SLASHES_AUTO', 0); // default
define('BX_SLASHES_ADD', 1);
define('BX_SLASHES_STRIP', 2);
define('BX_SLASHES_NO_ACTION', 3);

/**
 * The following two functions are needed to convert title to uri and back.
 * It usefull when titles are used in URLs, like in Categories and Tags. 
 */
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
	);
}
    
/**
 * Convert date(timestamp) in accordance with requested format code.
 *
 * @param string $sTimestamp - timestamp
 * @param integer $iCode - format code
 *                  1(4) - short date format. @see sys_options -> short_date_format_php
 *                  2 - time format. @see sys_options -> time_format_php
 *                  3(5) - long date format. @see sys_options -> date_format_php
 *                  6 - RFC 2822 date format.
 */
function getLocaleDate($sTimestamp = '', $iCode = BX_DOL_LOCALE_DATE_SHORT) {
    $sFormat = (int)$iCode == 6 ? 'r' : getLocaleFormat($iCode);

	return date($sFormat, $sTimestamp);
}
/**
 * Get data format in accordance with requested format code and format type.
 *
 * @param integer $iCode - format code
 *                  1(4) - short date format. @see sys_options -> short_date_format_php
 *                  2 - time format. @see sys_options -> time_format_php
 *                  3(5) - long date format. @see sys_options -> date_format_php
 *                  6 - RFC 2822 date format.
 * @param integer $iType - format type
 *                  1 - for PHP code.
 *                  2 - for database. 
 */
function getLocaleFormat($iCode = BX_DOL_LOCALE_DATE_SHORT, $iType = BX_DOL_LOCALE_PHP) {
    $sPostfix = (int)$iType == BX_DOL_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 will check on blocked status;
 *
 * @param  : $iFirstProfile (integer) - first profile's id;
 * @param  : $iSecondProfile (integer) - second profile's id;
 * @return : (boolean) - true if pair will blocked;
 */
function isBlocked($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($input, $len = 35) {
	$output = wordwrap($input, $len, " ", true);
	return $output;
}

/*
 * functions for limiting maximal word length
 */
function strmaxwordlen($input, $len = 100) {
	return $input;
}

/*
 * functions for limiting maximal text length
 */
function strmaxtextlen($input, $len = 60) {
	if ( strlen($input) > $len )
		return mb_substr($input, 0, $len - 4) . "...";
	else
		return $input;
}

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));
}

/*
 * functions for input data into database
 * @param $text string to pass to database
 * @param $strip_tags tags parameter:
 *          BX_TAGS_STRIP - strip tags
 *          BX_TAGS_SPECIAL_CHARS - translate to special html chars (not good to use this, it is better to do such thing during output to browser)  
 *          BX_TAGS_VALIDATE - validate HTML
 *          BX_TAGS_NO_ACTION - do not perform any action with tags
 *  @param $addslashes slashes parameter:
 *          BX_SLASHES_AUTO - automatically detect magic_quotes_gpc setting 
 *          BX_SLASHES_STRIP - strip slashes
 *          BX_SLASHES_ADD - add slashes
 *          BX_SLASHES_NO_ACTION - do not perform any action with slashes
 */
function process_db_input( $text, $strip_tags = 0, $addslashes = 0 ) {

    if (is_array($text)) {
        foreach ($text as $k => $v)
            $text[$k] = process_db_input($v, $strip_tags, $addslashes);
        return $text;
    }   

    if ((get_magic_quotes_gpc() && $addslashes == BX_SLASHES_AUTO) || $addslashes == BX_SLASHES_STRIP)
        $text = stripslashes($text);
    elseif ($addslashes == BX_SLASHES_ADD)
        $text = addslashes($text);

    switch ($strip_tags) {
    case BX_TAGS_STRIP_AND_NL2BR:
        return mysql_real_escape_string(nl2br(strip_tags($text)));
    case BX_TAGS_STRIP:
        return mysql_real_escape_string(strip_tags($text));    
    case BX_TAGS_SPECIAL_CHARS:
        return mysql_real_escape_string(htmlspecialchars($text, ENT_QUOTES, 'UTF-8')); 
    case BX_TAGS_VALIDATE:
        return mysql_real_escape_string(clear_xss($text));
    case BX_TAGS_NO_ACTION:
    default:
        return mysql_real_escape_string($text);
    }	
}

/*
 * function for processing pass data
 *
 * This function cleans the GET/POST/COOKIE data if magic_quotes_gpc() is on
 * for data which should be outputed immediately after submit
 */
function process_pass_data( $text, $strip_tags = 0 ) {
	if ( $strip_tags )
		$text = strip_tags($text);

	if ( !get_magic_quotes_gpc() )
		return $text;
	else
		return stripslashes($text);
}

/*
 * function for output data from database into html
 */
function htmlspecialchars_adv( $string ) {
    return htmlspecialchars($string, ENT_COMPAT, 'UTF-8');
    
    /*
	$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 );
}

/**
*	Used to construct sturctured arrays in GET or POST data. Supports multidimensional arrays.
*
*	@param array	$Values	Specifies values and values names, that should be submitted. Can be multidimensional.
*
*	@return string	HTML code, which contains <input type="hidden"...> tags with names and values, specified in $Values array.
*/
function ConstructHiddenValues($Values) {
	/**
	*	Recursive function, processes multidimensional arrays
	*
	*	@param string $Name	Full name of array, including all subarrays' names
	*
	*	@param array $Value	Array of values, can be multidimensional
	*
	*	@return string	Properly consctructed <input type="hidden"...> tags
	*/
	function ConstructHiddenSubValues($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;
}

/**
*	Returns HTML/javascript code, which redirects to another URL with passing specified data (through specified method)
*
*	@param string	$ActionURL	destination URL
*
*	@param array	$Params	Parameters to be passed (through GET or POST)
*
*	@param string	$Method	Submit mode. Only two values are valid: 'get' and 'post'
*
*	@return mixed	Correspondent HTML/javascript code or false, if input data is wrong
*/
function RedirectCode($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>
<?

	$Result = ob_get_contents();
	ob_end_clean();

	return $Result;
}

/**
*	Redirects browser to another URL, passing parameters through POST or GET
*	Actually just prints code, returned by RedirectCode (see RedirectCode)
*/
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;
}

/**
 * Send email function
 *
 * @param string $sRecipientEmail		- Email where email should be send
 * @param string $sMailSubject			- subject of the message
 * @param string $sMailBody				- Body of the message
 * @param integer $iRecipientID			- ID of recipient profile
 * @param array $aPlus					- Array of additional information
 *
 *
 * @return boolean 						- trie if message was send
 * 										- false if not
 */
function sendMail( $sRecipientEmail, $sMailSubject, $sMailBody, $iRecipientID = 0, $aPlus = array(), $sEmailFlag = 'html', $isDisableAlert = false ) {
	global $site;

    if (!$sRecipientEmail)
        return false;

	if($iRecipientID)
		$aRecipientInfo = getProfileInfo( $iRecipientID );

    $sEmailNotify       = isset($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: " . $sSiteTitle . " <{$sEmailNotify}>";
	$sMailParameters	= "-f{$sEmailNotify}";

    if ($aPlus || $iRecipientID) {
    	if(!is_array($aPlus))
            $aPlus = array();
    	$oEmailTemplates = new BxDolEmailTemplates();
	    $sMailSubject = $oEmailTemplates->parseContent($sMailSubject, $aPlus, $iRecipientID);
    	$sMailBody = $oEmailTemplates->parseContent($sMailBody, $aPlus, $iRecipientID);
    }

	$sMailSubject =  $sMailSubject;

	$sMailHeader = ":" . $sMailHeader;

	if( 'html' == $sEmailFlag) {
		$sMailHeader = "Content-type: text/html; charset=UTF-8\r\n" . $sMailHeader;
		$iSendingResult = mail( $sRecipientEmail, $sMailSubject, $sMailBody, $sMailHeader, $sMailParameters );
	} else {
		$sMailHeader = "Content-type: text/plain; charset=UTF-8\r\n" . $sMailHeader;
        $sMailBody = html2txt($sMailBody);
		$iSendingResult = mail( $sRecipientEmail, $sMailSubject, html2txt($sMailBody), $sMailHeader, $sMailParameters );
	}

    if (!$isDisableAlert) {
        //--- create system event
        bx_import('BxDolAlerts');
        $aAlertData = array(
            'email'     => $sRecipientEmail,
            'subject'   => $sMailSubject,
            'body'      => $sMailBody,
            'header'    => $sMailHeader,
            'params'    => $sMailParameters,
            'html'      => 'html' == $sEmailFlag ? true : false,
        );

        $oZ = new BxDolAlerts('profile', 'send_mail', $aRecipientInfo['ID'], '', $aAlertData);
        $oZ -> alert();
    }

	return $iSendingResult;
}

/*
 * Getting Array with Templates Names
*/

function get_templates_array() {
	$path = BX_DIRECTORY_PATH_ROOT . 'templates/';
	$templ_choices = array();
	$handle = opendir( $path );

	while ( false !== ($sFileName = readdir($handle)) ) {
		if ( is_dir($path.$sFileName) && substr($sFileName, 0, 5) == 'tmpl_' ) {
			$sTemplName = '';
			@include( $path.$sFileName.'/scripts/BxTemplName.php' );
			if( $sTemplName )
				$templ_choices[substr($sFileName, 5)] = $sTemplName;
		}
	}
	closedir( $handle );
    return $templ_choices;
}

/*
 * 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 {
            $sGetTransfer = bx_encode_url_params($_GET, array('skin'));
			$ReturnResult .= '<a href="' . bx_html_attribute($_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 extDirExists( $sDirSrc ) {
	if( file_exists( $sDirSrc ) && is_dir( $sDirSrc ) ) {
		$ret = true;
	} else {
		$ret = false;
	}

	return $ret;
}*/

function getVisitorIP() {
	$ip = "0.0.0.0";
	if( ( isset( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) && ( !empty( $_SERVER['HTTP_X_FORWARDED_FOR'] ) ) ) {
		$ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
	} elseif( ( isset( $_SERVER['HTTP_CLIENT_IP'])) && (!empty($_SERVER['HTTP_CLIENT_IP'] ) ) ) {
		$ip = explode(".",$_SERVER['HTTP_CLIENT_IP']);
		$ip = $ip[3].".".$ip[2].".".$ip[1].".".$ip[0];
	} elseif((!isset( $_SERVER['HTTP_X_FORWARDED_FOR'])) || (empty($_SERVER['HTTP_X_FORWARDED_FOR']))) {
		if ((!isset( $_SERVER['HTTP_CLIENT_IP'])) && (empty($_SERVER['HTTP_CLIENT_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') . ' (' . BX_DOL_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) {

	if ($GLOBALS['logged']['admin'])
		return $val;

    // HTML Purifier plugin    
    global $oHtmlPurifier;
    require_once( BX_DIRECTORY_PATH_PLUGINS . 'htmlpurifier/HTMLPurifier.standalone.php' );
    if (!isset($oHtmlPurifier)) {

        HTMLPurifier_Bootstrap::registerAutoload();
        
        $oConfig = HTMLPurifier_Config::createDefault();        

        $oConfig->set('HTML.SafeObject', 'true');
        $oConfig->set('Output.FlashCompat', 'true');
        $oConfig->set('HTML.FlashAllowFullScreen', 'true');

        $oConfig->set('Filter.Custom', array (new HTMLPurifier_Filter_LocalMovie()));

		$oConfig->set('HTML.DefinitionID', '1');
		$oDef = $oConfig->getHTMLDefinition(true);
		$oDef->addAttribute('a', 'target', 'Enum#_blank,_self,_target,_top');
        
        $oHtmlPurifier = new HTMLPurifier($oConfig);
    }
    
    return $oHtmlPurifier->purify($val);
}

function _format_when ($iSec) {
	$s = '';

	if ($iSec>0) {
		if ($iSec < 3600) {
			$i = round($iSec/60);
			$s .= (0 == $i || 1 == $i) ? _t('_x_minute_ago', '1') : _t('_x_minute_ago', $i, 's');
		} else if ($iSec < 86400) {
			$i = round($iSec/60/60);
			$s .= (0 == $i || 1 == $i) ? _t('_x_hour_ago', '1') : _t('_x_hour_ago', $i, 's');
		} else {
			$i = round($iSec/60/60/24);
			$s .= (0 == $i || 1 == $i) ? _t('_x_day_ago', '1') : _t('_x_day_ago', $i, 's');
		}
	} else {
		if ($iSec > -3600) {
			$i = round($iSec/60);
			$s .= (0 == $i || 1 == $i) ? _t('_in_x_minute', '1') : _t('_in_x_minute', -$i, 's');
		} else if ($iSec > -86400) {
			$i = round($iSec/60/60);
			$s .= (0 == $i || 1 == $i) ? _t('_in_x_hour', '1') : _t('_in_x_hour', -$i, 's');
		} elseif ($iSec < -86400) {
			$i = round($iSec/60/60/24);
			$s .= (0 == $i || 1 == $i) ? _t('_in_x_day', '1') : _t('_in_x_day', -$i, 's');
		}
	}
	return $s;
}

function defineTimeInterval($iTime) {
    $iTime = time() - (int)$iTime;
    $sCode = _format_when($iTime);
    return $sCode;
}

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, 6 ) != 'ftp://' )
		$matches[2] = BX_DOL_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);
}

/**
 * Block user IP
 *
 * @param $sIP mixed
 * @param $iExpirationInSec integer
 * @param $sComment string
 * @return void
 */
function bx_block_ip($mixedIP, $iExpirationInSec = 86400, $sComment = '') {

    if (is_int($mixedIP))
        $iIP = $mixedIP;
    else
        $iIP = ip2long($sIP);

    $iExpirationInSec = time() + (int)$iExpirationInSec;
    $sComment = process_db_input($sComment, BX_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 bx_is_ip_dns_blacklisted($sCurIP = '', $sType = '') {

    if (defined('BX_DOL_CRON_EXECUTE'))
        return false;

    if (!$sCurIP)
        $sCurIP = getVisitorIP();
   
    if (bx_is_ip_whitelisted($sCurIP))
        return false;
 
    $o = bx_instance('BxDolDNSBlacklists');
    if (BX_DOL_DNSBL_POSITIVE == $o->dnsbl_lookup_ip(BX_DOL_DNSBL_CHAIN_SPAMMERS, $sCurIP) && BX_DOL_DNSBL_POSITIVE != $o->dnsbl_lookup_ip(BX_DOL_DNSBL_CHAIN_WHITELIST, $sCurIP))
    {
        $o->onPositiveDetection ($sCurIP, $sType);
        return true;
    }
    
    return false;
}

function bx_is_ip_whitelisted($sCurIP = '') {

    if (defined('BX_DOL_CRON_EXECUTE'))
        return true;

    $iIPGlobalType = (int)getParam('ipListGlobalType');    
    if ($iIPGlobalType != 1 && $iIPGlobalType != 2) // 0 - disabled
        return false;

    if (!$sCurIP)
        $sCurIP = getVisitorIP();
	$iCurIP = ip2long($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 bx_is_ip_blocked($sCurIP = '') {

    if (defined('BX_DOL_CRON_EXECUTE'))
        return false;	

    $iIPGlobalType = (int)getParam('ipListGlobalType');
    if ($iIPGlobalType != 1 && $iIPGlobalType != 2) // 0 - disabled
        return false;

    if (!$sCurIP)
        $sCurIP = getVisitorIP();
	$iCurIP = ip2long($sCurIP);
	$iCurrTume = time();

    if (bx_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;
}

/**
 *  spam checking function
 *  @param $s content to check for spam
 *  @param $isStripSlashes slashes parameter:
 *          BX_SLASHES_AUTO - automatically detect magic_quotes_gpc setting 
 *          BX_SLASHES_NO_ACTION - do not perform any action with slashes
 *  @return true if spam detected
 */
function bx_is_spam ($val, $isStripSlashes = BX_SLASHES_AUTO) {

    if (defined('BX_DOL_CRON_EXECUTE'))
        return false;

    if (isAdmin())
        return false;

    if (bx_is_ip_whitelisted($sCurIP))
        return false;

    if (get_magic_quotes_gpc() && $isStripSlashes == BX_SLASHES_AUTO)
        $val = stripslashes($val);

    $bRet = false;
    if ('on' == getParam('sys_uridnsbl_enable')) {
        $oBxDolDNSURIBlacklists = bx_instance('BxDolDNSURIBlacklists');
        if ($oBxDolDNSURIBlacklists->isSpam($val)) {
            $oBxDolDNSURIBlacklists->onPositiveDetection($val);
            $bRet = true;
        }
    }

    if ('on' == getParam('sys_akismet_enable')) {
        $oBxDolAkismet = bx_instance('BxDolAkismet');
        if ($oBxDolAkismet->isSpam($val)) {
            $oBxDolAkismet->onPositiveDetection($val);
            $bRet = true;
        }
    }

    if ($bRet && 'on' == getParam('sys_antispam_report')) {
        bx_import('BxDolEmailTemplates');
        $oEmailTemplates = new BxDolEmailTemplates();
        $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); 
}

/**
** @description : function will create cache file with all SQL queries ;
** @return		:
*/
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 = mysql_fetch_assoc($rData)) {
		$sLine .= genSiteStatFile($aVal);
	}	
	$sLine = rtrim($sLine, ",\n")."\n);";

    $aResult = eval($sLine);
	
    $oCache = $GLOBALS['MySQL']->getDbCacheObject();
	return $oCache->setData ($GLOBALS['MySQL']->genDbCacheKey('sys_stat_site'), $aResult);
}

/**
 * Function will cute the parameter from received string;
 * remove received parameter from 'GET' query ;
 *
 * @param        : $aExceptNames (string) - name of unnecessary parameter;
 * @return       : cleared string;
 */
function getClearedParam( $sExceptParam, $sString ) { 
    return preg_replace( "/(&amp;|&){$sExceptParam}=([a-z0-9\_\-]{1,})/i",'', $sString);
}

/**
 * import class file, it detect class path by its prefix or module array
 *
 * @param $sClassName - full class name or class postfix in a case of module class
 * @param $aModule - module array or true to get module array from global variable
 */
function bx_import($sClassName, $aModule = array()) {
    if (class_exists($sClassName)) 
        return;

    if ($aModule) {
        $a = (true === $aModule) ? $GLOABLS['aModule'] : $aModule;
        if (class_exists($a['class_prefix'] . $sClassName)) 
            return;
        require_once (BX_DIRECTORY_PATH_MODULES . $a['path'] . 'classes/' . $a['class_prefix'] . $sClassName . '.php');
    }

    if (0 == strncmp($sClassName, 'BxDol', 5)) {
        require_once(BX_DIRECTORY_PATH_CLASSES . $sClassName . '.php');
        return;
    }
    if (0 == strncmp($sClassName, 'BxBase', 6)) {
        require_once(BX_DIRECTORY_PATH_BASE . 'scripts/' . $sClassName . '.php');
        return;
    }    
    if (0 == strncmp($sClassName, 'BxTempl', 7) && !class_exists($sClassName)) {
    	if(isset($GLOBALS['iAdminPage']) && (int)$GLOBALS['iAdminPage'] == 1)
    		require_once(BX_DIRECTORY_PATH_ROOT . "templates/tmpl_uni/scripts/" . $sClassName . '.php');
    	else
        	require_once(BX_DIRECTORY_PATH_ROOT . "templates/tmpl_{$GLOBALS['tmpl']}/scripts/" . $sClassName . '.php');
        return;
    }
}

/**
 * Gets an instance of class pathing necessary parameters if it's necessary.
 *
 * @param string $sClassName class name.
 * @param array $aParams an array of parameters to be pathed to the constructor of the class.
 * @param array $aModule an array with module description. Is used when the requested class is located in some module. 
 * @return unknown
 */
function bx_instance($sClassName, $aParams = array(), $aModule = array()) {
    if(isset($GLOBALS['bxDolClasses'][$sClassName]))
        return $GLOBALS['bxDolClasses'][$sClassName];
    else {
        bx_import((empty($aModule) ? $sClassName : str_replace($aModule['class_prefix'], '', $sClassName)), $aModule);

        if(empty($aParams))
            $GLOBALS['bxDolClasses'][$sClassName] = new $sClassName();
        else {
            $sParams = "";
            foreach($aParams as $mixedKey => $mixedValue)
                $sParams .= "\$aParams[" . $mixedKey . "], ";
            $sParams = substr($sParams, 0, -2);

            $GLOBALS['bxDolClasses'][$sClassName] = eval("return new " . $sClassName . "(" . $sParams . ");");
        }

        return $GLOBALS['bxDolClasses'][$sClassName];
    }
}

/**
 * Escapes string/array ready to pass to js script with filtered symbols like ', " etc
 *
 * @param mixed $mixedInput - string/array which should be filtered
 * @return converted string / array
 */
function bx_js_string ($mixedInput) {
    $aUnits = array(
        "\"" => "&quot;",
        "'" => "&apos;",
        "\n" => " ",
        "\r" => "",
    );
    return str_replace(array_keys($aUnits), array_values($aUnits), $mixedInput);
}

/**
 * Return input string/array ready to pass to html attribute with filtered symbols like ', " etc
 *
 * @param mixed $mixedInput - string/array which should be filtered
 * @return converted string / array
 */
function bx_html_attribute ($mixedInput) {
    $aUnits = array(
        "\"" => "&quot;",
        "'" => "&apos;",
    );
    return str_replace(array_keys($aUnits), array_values($aUnits), $mixedInput);
}

/**
 * Escapes string/array ready to pass to php script with filtered symbols like ', " etc
 *
 * @param mixed $mixedInput - string/array which should be filtered
 * @return converted string / array
 */
function bx_php_string_apos ($mixedInput) {
    return str_replace("'", "\\'", $mixedInput);
}
function bx_php_string_quot ($mixedInput) {
    return str_replace('"', '\\"', $mixedInput);
}

/**
 * Gets file contents by URL.
 *
 * @param string $sFileUrl - file URL to be read.
 * @param array $aParams - an array of parameters to be pathed with URL.
 * @return string the file's contents.
 */
function bx_file_get_contents($sFileUrl, $aParams = array()) {
    $sParams = '?';
    foreach($aParams as $sKey => $sValue)
        $sParams .= $sKey . '=' . $sValue . '&';
    $sParams = substr($sParams, 0, -1);
    
    $sResult = '';
    if(function_exists('curl_init')) {
        $rConnect = curl_init();

        curl_setopt($rConnect, CURLOPT_URL, $sFileUrl . $sParams);
        curl_setopt($rConnect, CURLOPT_HEADER, 0);
        curl_setopt($rConnect, CURLOPT_RETURNTRANSFER, 1);
        curl_setopt($rConnect, CURLOPT_FOLLOWLOCATION, 1);
        
		$sAllCookies = '';
		foreach($_COOKIE as $sKey=>$sValue){ 
			$sAllCookies .= $sKey."=".$sValue.";";
		}
        curl_setopt($rConnect, CURLOPT_COOKIE, $sAllCookies);

        $sResult = curl_exec($rConnect);
        curl_close($rConnect);
    }
    else 
        $sResult = @file_get_contents($sFileUrl . $sParams);
        
    return $sResult;
}

/**
 * perform write log into 'tmp/log.txt' (for any debug development)
 *
 * @param $sNewLineText - New line debug text
  */
function writeLog($sNewLineText = 'test') {
	$sFileName = BX_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 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="' . $sUrlPrefix . urlencode(title2uri($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)
{
    $aResult = array();
    $sContent = bx_file_get_contents($sSourceUrl);
    
    if (strlen($sContent))
    {
        preg_match("/<title>(.*)<\/title>/", $sContent, $aMatch);
        $aResult['title'] = $aMatch[1];

        preg_match("/<meta.*name[='\" ]+description['\"].*content[='\" ]+(.*)['\"].*><\/meta>/", $sContent, $aMatch);
        $aResult['description'] = $aMatch[1];
    }
    
    return $aResult;
}

// simple comparator for strings etc
function simple_cmp($a, $b) {
    if ($a == $b) {
        return 0;
    }
    return ($a < $b) ? -1 : 1;
}

// calculation ini_get('upload_max_filesize') in bytes as example
function return_bytes($val) {
    $val = trim($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 bx_get ($sName) {
	if (isset($_GET[$sName]))
		return $_GET[$sName];
	elseif (isset($_POST[$sName]))
		return $_POST[$sName];
	else
		return false;
}

function bx_encode_url_params ($a, $aExcludeKeys = array ()) {
    $s = '';
    foreach ($a as $sKey => $sVal) {
        if (in_array($sKey, $aExcludeKeys)) 
            continue;
        if (is_array($sVal)) {
            foreach ($sVal as $sSubVal) {
                $s .= rawurlencode($sKey) . '[]=' . rawurlencode(is_array($sSubVal) ? 'array' : $sSubVal) . '&';
            }
        } else {
            $s .= rawurlencode($sKey) . '=' . rawurlencode($sVal) . '&';
        }
    }
    return $s;
}