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<?php |
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declare(strict_types = 1); |
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namespace Sop\X501\ASN1\AttributeValue\Feature; |
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use Sop\ASN1\Element; |
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use Sop\ASN1\Type\Primitive\BMPString; |
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use Sop\ASN1\Type\Primitive\PrintableString; |
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use Sop\ASN1\Type\Primitive\T61String; |
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use Sop\ASN1\Type\Primitive\UniversalString; |
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use Sop\ASN1\Type\Primitive\UTF8String; |
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use Sop\ASN1\Type\UnspecifiedType; |
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use Sop\X501\ASN1\AttributeValue\AttributeValue; |
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use Sop\X501\DN\DNParser; |
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use Sop\X501\MatchingRule\CaseIgnoreMatch; |
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use Sop\X501\MatchingRule\MatchingRule; |
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use Sop\X501\StringPrep\TranscodeStep; |
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/** |
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* Base class for attribute values having *(Unbounded)DirectoryString* as a syntax. |
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* |
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* @see https://www.itu.int/ITU-T/formal-language/itu-t/x/x520/2012/SelectedAttributeTypes.html#SelectedAttributeTypes.UnboundedDirectoryString |
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*/ |
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abstract class DirectoryString extends AttributeValue |
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{ |
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/** |
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* Teletex string syntax. |
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* |
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* @var int |
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*/ |
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const TELETEX = Element::TYPE_T61_STRING; |
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/** |
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* Printable string syntax. |
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* |
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* @var int |
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*/ |
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const PRINTABLE = Element::TYPE_PRINTABLE_STRING; |
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/** |
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* BMP string syntax. |
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* |
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* @var int |
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*/ |
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const BMP = Element::TYPE_BMP_STRING; |
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/** |
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* Universal string syntax. |
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* |
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* @var int |
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*/ |
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const UNIVERSAL = Element::TYPE_UNIVERSAL_STRING; |
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/** |
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* UTF-8 string syntax. |
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* |
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* @var int |
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*/ |
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const UTF8 = Element::TYPE_UTF8_STRING; |
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/** |
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* Mapping from syntax enumeration to ASN.1 class name. |
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* |
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* @internal |
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* |
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* @var array |
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*/ |
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const MAP_TAG_TO_CLASS = [ |
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self::TELETEX => T61String::class, |
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self::PRINTABLE => PrintableString::class, |
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self::UNIVERSAL => UniversalString::class, |
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self::UTF8 => UTF8String::class, |
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self::BMP => BMPString::class, |
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]; |
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/** |
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* ASN.1 type tag for the chosen syntax. |
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* |
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* @var int |
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*/ |
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protected $_stringTag; |
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/** |
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* String value. |
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* |
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* @var string |
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*/ |
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protected $_string; |
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/** |
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* Constructor. |
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* |
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* @param string $value String value |
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* @param int $string_tag Syntax choice |
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*/ |
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public function __construct(string $value, int $string_tag) |
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{ |
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$this->_string = $value; |
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$this->_stringTag = $string_tag; |
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} |
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/** |
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* {@inheritdoc} |
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* |
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* @return self |
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*/ |
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public static function fromASN1(UnspecifiedType $el): AttributeValue |
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{ |
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$tag = $el->tag(); |
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// validate tag |
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self::_tagToASN1Class($tag); |
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return new static($el->asString()->string(), $tag); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function toASN1(): Element |
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{ |
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$cls = self::_tagToASN1Class($this->_stringTag); |
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return new $cls($this->_string); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function stringValue(): string |
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{ |
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return $this->_string; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function equalityMatchingRule(): MatchingRule |
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{ |
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return new CaseIgnoreMatch($this->_stringTag); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function rfc2253String(): string |
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{ |
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// TeletexString is encoded as binary |
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if (self::TELETEX === $this->_stringTag) { |
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1 |
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return $this->_transcodedString(); |
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} |
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return DNParser::escapeString($this->_transcodedString()); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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protected function _transcodedString(): string |
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{ |
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$step = new TranscodeStep($this->_stringTag); |
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return $step->apply($this->_string); |
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} |
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/** |
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* Get ASN.1 class name for given DirectoryString type tag. |
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* |
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* @param int $tag |
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* |
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* @throws \UnexpectedValueException |
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* |
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* @return string |
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*/ |
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private static function _tagToASN1Class(int $tag): string |
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{ |
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if (!array_key_exists($tag, self::MAP_TAG_TO_CLASS)) { |
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throw new \UnexpectedValueException( |
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sprintf('Type %s is not valid DirectoryString.', |
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Element::tagToName($tag))); |
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} |
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return self::MAP_TAG_TO_CLASS[$tag]; |
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} |
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} |
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sop /
x501
