/*
* Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
* 2018
* Jonathan Schleifer <js@heap.zone>
*
* All rights reserved.
*
* This file is part of ObjFW. It may be distributed under the terms of the
* Q Public License 1.0, which can be found in the file LICENSE.QPL included in
* the packaging of this file.
*
* Alternatively, it may be distributed under the terms of the GNU General
* Public License, either version 2 or 3, which can be found in the file
* LICENSE.GPLv2 or LICENSE.GPLv3 respectively included in the packaging of this
* file.
*/
#include "config.h"
#import "OFASN1ObjectIdentifier.h"
#import "OFArray.h"
#import "OFData.h"
#import "OFNumber.h"
#import "OFString.h"
#import "OFInvalidArgumentException.h"
#import "OFInvalidFormatException.h"
#import "OFOutOfRangeException.h"
@implementation OFASN1ObjectIdentifier
@synthesize subidentifiers = _subidentifiers;
- (instancetype)initWithTagClass: (of_asn1_tag_class_t)tagClass
tagNumber: (of_asn1_tag_number_t)tagNumber
constructed: (bool)constructed
DEREncodedContents: (OFData *)DEREncodedContents
{
self = [super initWithTagClass: tagClass
tagNumber: tagNumber
constructed: constructed
DEREncodedContents: DEREncodedContents];
@try {
void *pool = objc_autoreleasePoolPush();
const unsigned char *items = [_DEREncodedContents items];
size_t count = [_DEREncodedContents count];
OFMutableArray *subidentifiers = [OFMutableArray array];
uintmax_t value = 0;
uint_fast8_t bits = 0;
if (_tagClass != OF_ASN1_TAG_CLASS_UNIVERSAL ||
_tagNumber != OF_ASN1_TAG_NUMBER_OBJECT_IDENTIFIER ||
_constructed)
@throw [OFInvalidArgumentException exception];
if (count == 0)
@throw [OFInvalidFormatException exception];
for (size_t i = 0; i < count; i++) {
if (bits == 0 && items[i] == 0x80)
@throw [OFInvalidFormatException exception];
value = (value << 7) | (items[i] & 0x7F);
bits += 7;
if (bits > sizeof(uintmax_t) * 8)
@throw [OFOutOfRangeException exception];
if (items[i] & 0x80)
continue;
if ([subidentifiers count] == 0) {
if (value < 40)
[subidentifiers addObject:
[OFNumber numberWithUIntMax: 0]];
else if (value < 80) {
[subidentifiers addObject:
[OFNumber numberWithUIntMax: 1]];
value -= 40;
} else {
[subidentifiers addObject:
[OFNumber numberWithUIntMax: 2]];
value -= 80;
}
}
[subidentifiers addObject:
[OFNumber numberWithUIntMax: value]];
value = 0;
bits = 0;
}
if (items[count - 1] & 0x80)
@throw [OFInvalidFormatException exception];
[subidentifiers makeImmutable];
_subidentifiers = [subidentifiers copy];
objc_autoreleasePoolPop(pool);
} @catch (id e) {
[self release];
@throw e;
}
return self;
}
- (void)dealloc
{
[_subidentifiers release];
[super dealloc];
}
- (OFString *)description
{
return [OFString stringWithFormat:
@"<OFASN1ObjectIdentifier: %@>",
[_subidentifiers componentsJoinedByString: @"."]];
}
@end