Differences From Artifact [a33414023e]:
- File src/OFASN1BitString.m — part of check-in [0d746a1aac] at 2018-10-13 23:51:15 on branch trunk — Add ASN.1 bit string type (user: js, size: 2434) [annotate] [blame] [check-ins using]
To Artifact [32f037ffdb]:
- File
src/OFASN1BitString.m
— part of check-in
[b1944fd052]
at
2018-10-27 13:01:38
on branch trunk
— Do not subclass OFASN1Value
The reason for this is that OFASN1Value requires an initializer for DER
encoding, however, it might be beneficial to create an ASN.1 type
without providing DER encoding for it. (user: js, size: 2785) [annotate] [blame] [check-ins using]
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#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfRangeException.h"
@implementation OFASN1BitString
@synthesize bitStringValue = _bitStringValue;
@synthesize bitStringLength = _bitStringLength;
- (instancetype)initWithTagClass: (of_asn1_tag_class_t)tagClass
tagNumber: (of_asn1_tag_number_t)tagNumber
constructed: (bool)constructed
DEREncodedContents: (OFData *)DEREncodedContents
{
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#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfRangeException.h"
@implementation OFASN1BitString
@synthesize bitStringValue = _bitStringValue;
@synthesize bitStringLength = _bitStringLength;
- (instancetype)init
{
OF_INVALID_INIT_METHOD
}
- (instancetype)initWithTagClass: (of_asn1_tag_class_t)tagClass
tagNumber: (of_asn1_tag_number_t)tagNumber
constructed: (bool)constructed
DEREncodedContents: (OFData *)DEREncodedContents
{
self = [super init];
@try {
void *pool = objc_autoreleasePoolPush();
unsigned char lastByteBits;
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)
@throw [OFInvalidFormatException exception];
lastByteBits =
*(unsigned char *)[DEREncodedContents itemAtIndex: 0];
if (count == 1 && lastByteBits != 0)
@throw [OFInvalidFormatException exception];
if (SIZE_MAX / 8 < count - 1 ||
SIZE_MAX - (count - 1) * 8 < lastByteBits)
@throw [OFOutOfRangeException exception];
_bitStringLength = (count - 1) * 8 + lastByteBits;
_bitStringValue = [[DEREncodedContents
subdataWithRange: of_range(1, count - 1)] copy];
objc_autoreleasePoolPop(pool);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_bitStringValue release];
[super dealloc];
}
- (bool)isEqual: (id)object
{
OFASN1BitString *bitString;
if (![object isKindOfClass: [OFASN1BitString class]])
return false;
bitString = object;
if (![bitString->_bitStringValue isEqual: _bitStringValue])
return false;
if (bitString->_bitStringLength != _bitStringLength)
return false;
return true;
}
- (uint32_t)hash
{
return [_bitStringValue hash] + (uint32_t)_bitStringLength;
}
- (OFString *)description
{
return [OFString stringWithFormat: @"<OFASN1BitString: %@ (%zu bits)>",
_bitStringValue, _bitStringLength];
}
@end
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