// Handle the type constraint
switch (strtoupper($type))
{
case 'INT' :
case 'INTEGER' :
// Only use the first integer value
preg_match('/-?[0-9]+/', (string) $source, $matches);
$result = @ (int) $matches[0];
break;
case 'FLOAT' :
case 'DOUBLE' :
// Only use the first floating point value
preg_match('/-?[0-9]+(\.[0-9]+)?/', (string) $source, $matches);
$result = @ (float) $matches[0];
break;
case 'BOOL' :
case 'BOOLEAN' :
$result = (bool) $source;
break;
case 'WORD' :
$result = (string) preg_replace( '/[^A-Z_]/i', '', $source );
break;
case 'ALNUM' :
$result = (string) preg_replace( '/[^A-Z0-9]/i', '', $source );
break;
case 'CMD' :
$result = (string) preg_replace( '/[^A-Z0-9_\.-]/i', '', $source );
$result = ltrim($result, '.');
break;
case 'BASE64' :
$result = (string) preg_replace( '/[^A-Z0-9\/+=]/i', '', $source );
break;
case 'STRING' :
// Check for static usage and assign $filter the proper variable
if(isset($this) && is_a( $this, 'JFilterInput' )) {
$filter =& $this;
} else {
$filter =& JFilterInput::getInstance();
}
$result = (string) $filter->_remove($filter->_decode((string) $source));
break;
case 'ARRAY' :
$result = (array) $source;
break;
case 'PATH' :
$pattern = '/^[A-Za-z0-9_-]+[A-Za-z0-9_\.-]*([\\\\\/][A-Za-z0-9_-]+[A-Za-z0-9_\.-]*)*$/';
preg_match($pattern, (string) $source, $matches);
$result = @ (string) $matches[0];
break;
case 'USERNAME' :
$result = (string) preg_replace( '/[\x00-\x1F\x7F<>"\'%&]/', '', $source );
break;
case 'MENUTYPE':
$result = str_replace('-', ' ', $source);
$lang = &JFactory::getLanguage();
$result = $lang->transliterate($result);
$result = (string) preg_replace(
array('/\s+/','/[^A-Za-z0-9\-\_]/'), array('-',''), $result
);
$result = strtolower(trim($result));
break;
default :
// Check for static usage and assign $filter the proper variable
if(is_object($this) && get_class($this) == 'JFilterInput') {
$filter =& $this;
} else {
$filter =& JFilterInput::getInstance();
}
// Are we dealing with an array?
if (is_array($source)) {
foreach ($source as $key => $value)
{
// filter element for XSS and other 'bad' code etc.
if (is_string($value)) {
$source[$key] = $filter->_remove($filter->_decode($value));
}
}
$result = $source;
} else {
// Or a string?
if (is_string($source) && !empty ($source)) {
// filter source for XSS and other 'bad' code etc.
$result = $filter->_remove($filter->_decode($source));
} else {
// Not an array or string.. return the passed parameter
$result = $source;
}
}
break;
}
return $result;
}
/**
* Function to determine if contents of an attribute is safe
*
* @static
* @param array $attrSubSet A 2 element array for attributes name,value
* @return boolean True if bad code is detected
* @since 1.5
*/
function checkAttribute($attrSubSet)
{
$attrSubSet[0] = strtolower($attrSubSet[0]);
$attrSubSet[1] = strtolower($attrSubSet[1]);
return (((strpos($attrSubSet[1], 'expression') !== false) && ($attrSubSet[0]) == 'style') || (strpos($attrSubSet[1], 'javascript:') !== false) || (strpos($attrSubSet[1], 'behaviour:') !== false) || (strpos($attrSubSet[1], 'vbscript:') !== false) || (strpos($attrSubSet[1], 'mocha:') !== false) || (strpos($attrSubSet[1], 'livescript:') !== false));
}
/**
* Internal method to iteratively remove all unwanted tags and attributes
*
* @access protected
* @param string $source Input string to be 'cleaned'
* @return string 'Cleaned' version of input parameter
* @since 1.5
*/
function _remove($source)
{
$loopCounter = 0;
// Iteration provides nested tag protection
while ($source != $this->_cleanTags($source))
{
$source = $this->_cleanTags($source);
$loopCounter ++;
}
return $source;
}
/**
* Internal method to
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