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#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfRangeException.h"
#import "OFTruncatedDataException.h"
enum {
ASN1_TAG_CONSTRUCTED_MASK = 0x20
tagConstructedMask = 0x20
};
int _OFData_ASN1DERParsing_reference;
static size_t parseObject(OFData *self, id *object, size_t depthLimit);
static OFArray *
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id object;
size_t objectLength;
objectLength = parseObject(contents, &object, depthLimit);
count -= objectLength;
contents = [contents subdataWithRange:
of_range(objectLength, count)];
OFRangeMake(objectLength, count)];
[ret addObject: object];
}
[ret makeImmutable];
return ret;
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while (count > 0) {
id object;
size_t objectLength;
OFData *objectData;
objectLength = parseObject(contents, &object, depthLimit);
objectData = [contents subdataWithRange:
of_range(0, objectLength)];
OFRangeMake(0, objectLength)];
if (previousObjectData != nil &&
[objectData compare: previousObjectData] !=
OF_ORDERED_DESCENDING)
OFOrderedDescending)
@throw [OFInvalidFormatException exception];
count -= objectLength;
contents = [contents subdataWithRange:
of_range(objectLength, count)];
OFRangeMake(objectLength, count)];
[ret addObject: object];
previousObjectData = objectData;
}
[ret makeImmutable];
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@throw [OFInvalidFormatException exception];
}
if (count - bytesConsumed < contentsLength)
@throw [OFTruncatedDataException exception];
contents = [self subdataWithRange:
of_range(bytesConsumed, contentsLength)];
OFRangeMake(bytesConsumed, contentsLength)];
bytesConsumed += contentsLength;
switch (tag & ~ASN1_TAG_CONSTRUCTED_MASK) {
case OF_ASN1_TAG_NUMBER_BOOLEAN:
switch (tag & ~tagConstructedMask) {
case OFASN1TagNumberBoolean:
valueClass = [OFASN1Boolean class];
break;
case OF_ASN1_TAG_NUMBER_INTEGER:
case OFASN1TagNumberInteger:
valueClass = [OFASN1Integer class];
break;
case OF_ASN1_TAG_NUMBER_BIT_STRING:
case OFASN1TagNumberBitString:
valueClass = [OFASN1BitString class];
break;
case OF_ASN1_TAG_NUMBER_OCTET_STRING:
case OFASN1TagNumberOctetString:
valueClass = [OFASN1OctetString class];
break;
case OF_ASN1_TAG_NUMBER_NULL:
if (tag & ASN1_TAG_CONSTRUCTED_MASK)
case OFASN1TagNumberNull:
if (tag & tagConstructedMask)
@throw [OFInvalidFormatException exception];
if (contents.count != 0)
@throw [OFInvalidFormatException exception];
*object = [OFNull null];
return bytesConsumed;
case OF_ASN1_TAG_NUMBER_OBJECT_IDENTIFIER:
case OFASN1TagNumberObjectIdentifier:
valueClass = [OFASN1ObjectIdentifier class];
break;
case OF_ASN1_TAG_NUMBER_ENUMERATED:
case OFASN1TagNumberEnumerated:
valueClass = [OFASN1Enumerated class];
break;
case OF_ASN1_TAG_NUMBER_UTF8_STRING:
case OFASN1TagNumberUTF8String:
valueClass = [OFASN1UTF8String class];
break;
case OF_ASN1_TAG_NUMBER_SEQUENCE:
if (!(tag & ASN1_TAG_CONSTRUCTED_MASK))
case OFASN1TagNumberSequence:
if (!(tag & tagConstructedMask))
@throw [OFInvalidFormatException exception];
*object = parseSequence(contents, depthLimit - 1);
return bytesConsumed;
case OF_ASN1_TAG_NUMBER_SET:
if (!(tag & ASN1_TAG_CONSTRUCTED_MASK))
case OFASN1TagNumberSet:
if (!(tag & tagConstructedMask))
@throw [OFInvalidFormatException exception];
*object = parseSet(contents, depthLimit - 1);
return bytesConsumed;
case OF_ASN1_TAG_NUMBER_NUMERIC_STRING:
case OFASN1TagNumberNumericString:
valueClass = [OFASN1NumericString class];
break;
case OF_ASN1_TAG_NUMBER_PRINTABLE_STRING:
case OFASN1TagNumberPrintableString:
valueClass = [OFASN1PrintableString class];
break;
case OF_ASN1_TAG_NUMBER_IA5_STRING:
case OFASN1TagNumberIA5String:
valueClass = [OFASN1IA5String class];
break;
default:
valueClass = [OFASN1Value class];
break;
}
*object = [[[valueClass alloc]
initWithTagClass: tag >> 6
tagNumber: tag & 0x1F
constructed: tag & ASN1_TAG_CONSTRUCTED_MASK
constructed: tag & tagConstructedMask
DEREncodedContents: contents] autorelease];
return bytesConsumed;
}
@implementation OFData (ASN1DERParsing)
- (id)objectByParsingASN1DER
{
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