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<?php |
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/* |
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* This file is part of the PHPASN1 library. |
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* |
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* Copyright © Friedrich Große <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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|
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namespace WP_DEFENDER_VENDOR\FG\X509; |
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|
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use WP_DEFENDER_VENDOR\FG\ASN1\Exception\ParserException; |
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use WP_DEFENDER_VENDOR\FG\ASN1\OID; |
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use WP_DEFENDER_VENDOR\FG\ASN1\ASNObject; |
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use WP_DEFENDER_VENDOR\FG\ASN1\Parsable; |
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use WP_DEFENDER_VENDOR\FG\ASN1\Identifier; |
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use WP_DEFENDER_VENDOR\FG\ASN1\Universal\OctetString; |
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use WP_DEFENDER_VENDOR\FG\ASN1\Universal\Set; |
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use WP_DEFENDER_VENDOR\FG\ASN1\Universal\Sequence; |
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use WP_DEFENDER_VENDOR\FG\ASN1\Universal\ObjectIdentifier; |
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use WP_DEFENDER_VENDOR\FG\X509\SAN\SubjectAlternativeNames; |
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|
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class CertificateExtensions extends Set implements Parsable |
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{ |
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private $innerSequence; |
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private $extensions = []; |
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|
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public function __construct() |
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{ |
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$this->innerSequence = new Sequence(); |
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parent::__construct($this->innerSequence); |
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} |
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|
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public function addSubjectAlternativeNames(SubjectAlternativeNames $sans) |
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{ |
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$this->addExtension(OID::CERT_EXT_SUBJECT_ALT_NAME, $sans); |
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} |
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|
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private function addExtension($oidString, ASNObject $extension) |
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{ |
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$sequence = new Sequence(); |
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$sequence->addChild(new ObjectIdentifier($oidString)); |
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$sequence->addChild($extension); |
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|
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$this->innerSequence->addChild($sequence); |
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$this->extensions[] = $extension; |
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} |
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|
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public function getContent() |
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{ |
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return $this->extensions; |
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} |
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|
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public static function fromBinary(&$binaryData, &$offsetIndex = 0) |
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{ |
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self::parseIdentifier($binaryData[$offsetIndex], Identifier::SET, $offsetIndex++); |
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self::parseContentLength($binaryData, $offsetIndex); |
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|
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$tmpOffset = $offsetIndex; |
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$extensions = Sequence::fromBinary($binaryData, $offsetIndex); |
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$tmpOffset += 1 + $extensions->getNumberOfLengthOctets(); |
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|
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$parsedObject = new self(); |
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foreach ($extensions as $extension) { |
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if ($extension->getType() != Identifier::SEQUENCE) { |
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//FIXME wrong offset index |
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throw new ParserException('Could not parse Certificate Extensions: Expected ASN.1 Sequence but got '.$extension->getTypeName(), $offsetIndex); |
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} |
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|
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$tmpOffset += 1 + $extension->getNumberOfLengthOctets(); |
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$children = $extension->getChildren(); |
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if (count($children) < 2) { |
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throw new ParserException('Could not parse Certificate Extensions: Needs at least two child elements per extension sequence (object identifier and octet string)', $tmpOffset); |
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} |
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/** @var \WP_DEFENDER_VENDOR\FG\ASN1\ASNObject $objectIdentifier */ |
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$objectIdentifier = $children[0]; |
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|
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/** @var OctetString $octetString */ |
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$octetString = $children[1]; |
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|
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if ($objectIdentifier->getType() != Identifier::OBJECT_IDENTIFIER) { |
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throw new ParserException('Could not parse Certificate Extensions: Expected ASN.1 Object Identifier but got '.$extension->getTypeName(), $tmpOffset); |
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} |
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|
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$tmpOffset += $objectIdentifier->getObjectLength(); |
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|
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if ($objectIdentifier->getContent() == OID::CERT_EXT_SUBJECT_ALT_NAME) { |
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$sans = SubjectAlternativeNames::fromBinary($binaryData, $tmpOffset); |
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$parsedObject->addSubjectAlternativeNames($sans); |
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} else { |
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// can now only parse SANs. There might be more in the future |
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$tmpOffset += $octetString->getObjectLength(); |
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} |
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} |
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|
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$parsedObject->getBinary(); // Determine the number of content octets and object sizes once (just to let the equality unit tests pass :/ ) |
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return $parsedObject; |
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} |
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} |
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