ObjFW  Diff

- (instancetype)initWithBitStringValue: (OFData *)bitStringValue
		       bitStringLength: (size_t)bitStringLength
{
	self = [super init];

	@try {
		if ([bitStringValue count] * [bitStringValue itemSize] !=
		if (bitStringValue.count * bitStringValue.itemSize !=
		    bitStringLength / 8)
			@throw [OFInvalidFormatException exception];

		_bitStringValue = [bitStringValue copy];
		_bitStringLength = bitStringLength;
	} @catch (id e) {
		[self release];

{
	void *pool = objc_autoreleasePoolPush();
	OFData *bitStringValue;
	size_t bitStringLength;

	@try {
		unsigned char lastByteBits;
		size_t count = [DEREncodedContents count];
		size_t count = DEREncodedContents.count;

		if (tagClass != OF_ASN1_TAG_CLASS_UNIVERSAL ||
		    tagNumber != OF_ASN1_TAG_NUMBER_BIT_STRING || constructed)
			@throw [OFInvalidArgumentException exception];

		if ([DEREncodedContents itemSize] != 1 || count == 0)
		if (DEREncodedContents.itemSize != 1 || count == 0)
			@throw [OFInvalidFormatException exception];

		lastByteBits =
		    *(unsigned char *)[DEREncodedContents itemAtIndex: 0];

		if (count == 1 && lastByteBits != 0)
			@throw [OFInvalidFormatException exception];

		return false;

	return true;
}

- (uint32_t)hash
{
	return [_bitStringValue hash] + (uint32_t)_bitStringLength;
	return _bitStringValue.hash + (uint32_t)_bitStringLength;
}

- (OFString *)description
{
	return [OFString stringWithFormat: @"<OFASN1BitString: %@ (%zu bits)>",
					   _bitStringValue, _bitStringLength];
}
@end