ObjFW  Diff

	} while (componentLength > 0);

	*idx = i;

	return [components componentsJoinedByString: @"."];
}

static OFString *
parseAAAAData(const unsigned char *buffer)
{
	OFMutableString *data = [OFMutableString string];
	int_fast8_t zerosStart = -1, maxZerosStart = -1;
	uint_fast8_t zerosCount = 0, maxZerosCount = 0;
	bool first = true;

	for (uint_fast8_t i = 0; i < 16; i += 2) {
		if (buffer[i] == 0 && buffer[i + 1] == 0) {
			if (zerosStart >= 0)
				zerosCount++;
			else {
				zerosStart = i;
				zerosCount = 1;
			}
		} else {
			if (zerosCount > maxZerosCount) {
				maxZerosStart = zerosStart;
				maxZerosCount = zerosCount;
			}

			zerosStart = -1;
		}
	}
	if (zerosCount > maxZerosCount) {
		maxZerosStart = zerosStart;
		maxZerosCount = zerosCount;
	}

	if (maxZerosCount >= 2) {
		for (uint_fast8_t i = 0; i < maxZerosStart; i += 2) {
			[data appendFormat: (first ? @"%x" : @":%x"),
					    (buffer[i] << 8) | buffer[i + 1]];
			first = false;
		}

		[data appendString: @"::"];
		first = true;

		for (uint_fast8_t i = maxZerosStart + (maxZerosCount * 2);
		    i < 16; i += 2) {
			[data appendFormat: (first ? @"%x" : @":%x"),
					    (buffer[i] << 8) | buffer[i + 1]];
			first = false;
		}
	} else {
		for (uint_fast8_t i = 0; i < 16; i += 2) {
			[data appendFormat: (first ? @"%x" : @":%x"),
					    (buffer[i] << 8) | buffer[i + 1]];
			first = false;
		}
	}

	[data makeImmutable];

	return data;
}

static OF_KINDOF(OFDNSResourceRecord *)
createResourceRecord(OFString *name, of_dns_resource_record_class_t recordClass,
    of_dns_resource_record_type_t recordType, uint32_t TTL,
    const unsigned char *buffer, size_t length, size_t i, uint16_t dataLength)
{
	if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_A &&
	    recordClass == OF_DNS_RESOURCE_RECORD_CLASS_IN) {
		OFString *address;

		if (dataLength != 4)
			@throw [OFInvalidServerReplyException exception];

		address = [OFString stringWithFormat: @"%u.%u.%u.%u",


		    buffer[i], buffer[i + 1], buffer[i + 2], buffer[i + 3]];



		return [[[OFADNSResourceRecord alloc]
		    initWithName: name
			 address: address
			     TTL: TTL] autorelease];
	} else if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_NS) {
		size_t j = i;
		OFString *authoritativeHost = parseName(buffer, length, &j,
		    MAX_ALLOWED_POINTERS);

		if (j != i + dataLength)

		    initWithName: name
		     recordClass: recordClass
			 mailbox: mailbox
		   TXTDomainName: TXTDomainName
			     TTL: TTL] autorelease];
	} else if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_AAAA &&
	    recordClass == OF_DNS_RESOURCE_RECORD_CLASS_IN) {
		OFString *address;

		if (dataLength != 16)
			@throw [OFInvalidServerReplyException
			    exception];





		address = parseAAAAData(&buffer[i]);





		return [[[OFAAAADNSResourceRecord alloc]
		    initWithName: name
			 address: address
			     TTL: TTL] autorelease];
	} else if (recordType == OF_DNS_RESOURCE_RECORD_TYPE_SRV &&
	    recordClass == OF_DNS_RESOURCE_RECORD_CLASS_IN) {
		uint16_t priority, weight, port;
		size_t j;
		OFString *target;