public static function fromBinary(&$binaryData, &$offsetIndex = 0)
{
self::parseIdentifier($binaryData[$offsetIndex], Identifier::OCTETSTRING, $offsetIndex++);
$contentLength = self::parseContentLength($binaryData, $offsetIndex);
if ($contentLength < 2) {
throw new ParserException('Can not parse Subject Alternative Names: The Sequence within the octet string after the Object identifier ' . OID::CERT_EXT_SUBJECT_ALT_NAME . " is too short ({$contentLength} octets)", $offsetIndex);
}
$offsetOfSequence = $offsetIndex;
$sequence = Sequence::fromBinary($binaryData, $offsetIndex);
$offsetOfSequence += $sequence->getNumberOfLengthOctets() + 1;
if ($sequence->getObjectLength() != $contentLength) {
throw new ParserException('Can not parse Subject Alternative Names: The Sequence length does not match the length of the surrounding octet string', $offsetIndex);
}
$parsedObject = new self();
/** @var \FG\ASN1\Object $object */
foreach ($sequence as $object) {
if ($object->getType() == DNSName::IDENTIFIER) {
$domainName = DNSName::fromBinary($binaryData, $offsetOfSequence);
$parsedObject->addDomainName($domainName);
} elseif ($object->getType() == IPAddress::IDENTIFIER) {
$ip = IPAddress::fromBinary($binaryData, $offsetOfSequence);
$parsedObject->addIP($ip);
} else {
throw new ParserException('Could not parse Subject Alternative Name: Only DNSName and IP SANs are currently supported', $offsetIndex);
}
}
$parsedObject->getBinary();
// Determine the number of content octets and object sizes once (just to let the equality unit tests pass :/ )
return $parsedObject;
}
