/**
*
* @see \X501\StringPrep\StringPrep::prepare()
* @throws \LogicException If string type is not supported
* @param string $string String to prepare
* @return string UTF-8 encoded string
*/
public function apply($string)
{
switch ($this->_type) {
// UTF-8 string as is
case Element::TYPE_UTF8_STRING:
return $string;
// PrintableString maps directly to UTF-8
// PrintableString maps directly to UTF-8
case Element::TYPE_PRINTABLE_STRING:
return $string;
// UCS-2 to UTF-8
// UCS-2 to UTF-8
case Element::TYPE_BMP_STRING:
return mb_convert_encoding($string, "UTF-8", "UCS-2BE");
// UCS-4 to UTF-8
// UCS-4 to UTF-8
case Element::TYPE_UNIVERSAL_STRING:
return mb_convert_encoding($string, "UTF-8", "UCS-4BE");
// TeletexString mapping is a local matter.
// We take a shortcut here and encode it as a hexstring.
// TeletexString mapping is a local matter.
// We take a shortcut here and encode it as a hexstring.
case Element::TYPE_T61_STRING:
$el = new T61String($string);
return "#" . bin2hex($el->toDER());
}
throw new \LogicException("Unsupported string type " . Element::tagToName($this->_type) . ".");
}
/**
* Get textual description of the wrapped element for debugging purposes.
*
* @return string
*/
private function _typeDescriptorString()
{
$type_cls = $this->_element->typeClass();
$tag = $this->_element->tag();
if ($type_cls == Identifier::CLASS_UNIVERSAL) {
return Element::tagToName($tag);
}
return Identifier::classToName($type_cls) . " TAG {$tag}";
}
/**
* Generate ASN.1 element.
*
* @throws \UnexpectedValueException
* @return StringType
*/
public function toASN1()
{
switch ($this->_tag) {
case Element::TYPE_IA5_STRING:
return new IA5String($this->_text);
case Element::TYPE_VISIBLE_STRING:
return new VisibleString($this->_text);
case Element::TYPE_BMP_STRING:
return new BMPString($this->_text);
case Element::TYPE_UTF8_STRING:
return new UTF8String($this->_text);
default:
throw new \UnexpectedValueException("Type " . Element::tagToName($this->_tag) . " not supported.");
}
}
/**
* Generate ASN.1 structure.
*
* @throws \LogicException
* @return Element
*/
public function toASN1()
{
switch ($this->_type) {
case Element::TYPE_OCTET_STRING:
return new OctetString($this->_value);
case Element::TYPE_UTF8_STRING:
return new UTF8String($this->_value);
case Element::TYPE_OBJECT_IDENTIFIER:
return new ObjectIdentifier($this->_value);
}
throw new \LogicException("Type " . Element::tagToName($this->_type) . " not supported.");
}
/**
* Generate ASN.1.
*
* @throws \UnexpectedValueException
* @return TimeType
*/
public function toASN1()
{
$dt = $this->_dt;
switch ($this->_type) {
case Element::TYPE_UTC_TIME:
return new UTCTime($dt);
case Element::TYPE_GENERALIZED_TIME:
// GeneralizedTime must not contain fractional seconds
// (rfc5280 4.1.2.5.2)
if ($dt->format("u") != 0) {
// remove fractional seconds (round down)
$dt = \DateTimeImmutable::createFromFormat("Y-m-d H:i:s", $dt->format("Y-m-d H:i:s"), $dt->getTimezone());
}
return new GeneralizedTime($dt);
}
throw new \UnexpectedValueException("Time type " . Element::tagToName($this->_type) . " not supported.");
}
/**
* Get ASN.1 class name for given DirectoryString type tag.
*
* @param int $tag
* @throws \UnexpectedValueException
* @return string
*/
private static function _tagToASN1Class($tag)
{
if (!array_key_exists($tag, self::MAP_TAG_TO_CLASS)) {
throw new \UnexpectedValueException("Type " . Element::tagToName($tag) . " is not valid DirectoryString.");
}
return self::MAP_TAG_TO_CLASS[$tag];
}
