ObjFW  Check-in [7c27db9fe0]

Overview
Comment:Add -[OFHash reset]

This is useful to calculate many hashes without allocating new objects.

Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA3-256: 7c27db9fe06808c2d4b35574e4181be9b090b95e0605bb01ff714ca9f9d1151c
User & Date: js on 2015-02-01 00:47:18
Other Links: manifest | tags
Context
2015-02-01
00:47
Doxyfile: Define OF_NO_RETURN check-in: f5dce70abd user: js tags: trunk
00:47
Add -[OFHash reset] check-in: 7c27db9fe0 user: js tags: trunk
2015-01-31
11:46
OF{MD5,RIPEMD160,SHA*}Hash: Small optimization check-in: c56b388459 user: js tags: trunk
Changes
Hide Diffs Side-by-Side Diffs Ignore Whitespace Patch

Modified src/OFHash.h from [a9b39a0eb7] to [3407d4c3db].

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/*!
 * @brief Returns a boolean whether the hash has already been calculated.
 *
 * @return A boolean whether the hash has already been calculated
 */
- (bool)isCalculated;

/*!
 * @brief Resets all state so that a new hash can be calculated.
 *
 * @warning This invalidates any pointer previously returned by @ref digest. If
 *	    you are still interested in the previous digest, you need to memcpy
 *	    it yourself before calling @ref reset!
 */
- (void)reset;
@end

Modified src/OFMD5Hash.h from [03022e8a95] to [f6743c94bf].

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	union {
		uint8_t bytes[64];
		uint32_t words[16];
	} _buffer;
	size_t _bufferLength;
	bool _calculated;
}

- (void)OF_resetState;
@end

Modified src/OFMD5Hash.m from [4656f6b7f6] to [3333d71ead].

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	return [[[self alloc] init] autorelease];
}

- init
{
	self = [super init];

	[self OF_resetState];

	return self;
}

- (void)OF_resetState
{
	_state[0] = 0x67452301;
	_state[1] = 0xEFCDAB89;
	_state[2] = 0x98BADCFE;
	_state[3] = 0x10325476;

	return self;
}

- (void)updateWithBuffer: (const void*)buffer_
		  length: (size_t)length
{
	const uint8_t *buffer = buffer_;
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	return (const uint8_t*)_state;
}

- (bool)isCalculated
{
	return _calculated;
}

- (void)reset
{
	[self OF_resetState];
	_bits = 0;
	memset(&_buffer, 0, sizeof(_buffer));
	_bufferLength = 0;
	_calculated = false;
}
@end

Modified src/OFRIPEMD160Hash.h from [f677768429] to [59577d187f].

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	union {
		uint8_t bytes[64];
		uint32_t words[16];
	} _buffer;
	size_t _bufferLength;
	bool _calculated;
}

- (void)OF_resetState;
@end

Modified src/OFRIPEMD160Hash.m from [353a43c133] to [0df0a4dfec].

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	return [[[self alloc] init] autorelease];
}

- init
{
	self = [super init];

	[self OF_resetState];

	return self;
}

- (void)OF_resetState
{
	_state[0] = 0x67452301;
	_state[1] = 0xEFCDAB89;
	_state[2] = 0x98BADCFE;
	_state[3] = 0x10325476;
	_state[4] = 0xC3D2E1F0;

	return self;
}

- (void)updateWithBuffer: (const void*)buffer_
		  length: (size_t)length
{
	const uint8_t *buffer = buffer_;
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	return (const uint8_t*)_state;
}

- (bool)isCalculated
{
	return _calculated;
}

- (void)reset
{
	[self OF_resetState];
	_bits = 0;
	memset(&_buffer, 0, sizeof(_buffer));
	_bufferLength = 0;
	_calculated = false;
}
@end

Modified src/OFSHA1Hash.h from [ad2827a36b] to [f7d1ee4112].

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	union {
		uint8_t bytes[64];
		uint32_t words[80];
	} _buffer;
	size_t _bufferLength;
	bool _calculated;
}

- (void)OF_resetState;
@end

Modified src/OFSHA1Hash.m from [bb076bbf91] to [b45fb37713].

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	return [[[self alloc] init] autorelease];
}

- init
{
	self = [super init];

	[self OF_resetState];

	return self;
}

- (void)OF_resetState
{
	_state[0] = 0x67452301;
	_state[1] = 0xEFCDAB89;
	_state[2] = 0x98BADCFE;
	_state[3] = 0x10325476;
	_state[4] = 0xC3D2E1F0;

	return self;
}

- (void)updateWithBuffer: (const void*)buffer_
		  length: (size_t)length
{
	const uint8_t *buffer = buffer_;
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	return (const uint8_t*)_state;
}

- (bool)isCalculated
{
	return _calculated;
}

- (void)reset
{
	[self OF_resetState];
	_bits = 0;
	memset(&_buffer, 0, sizeof(_buffer));
	_bufferLength = 0;
	_calculated = false;
}
@end

Modified src/OFSHA224Hash.m from [5d213317d0] to [6f53e35d7d].

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	return 28;
}

- init
{
	self = [super init];

	[self OF_resetState];

	return self;
}

- (void)OF_resetState
{
	_state[0] = 0xC1059ED8;
	_state[1] = 0x367CD507;
	_state[2] = 0x3070DD17;
	_state[3] = 0xF70E5939;
	_state[4] = 0xFFC00B31;
	_state[5] = 0x68581511;
	_state[6] = 0x64F98FA7;
	_state[7] = 0xBEFA4FA4;

}
	return self;
}
@end

Modified src/OFSHA224Or256Hash.h from [81c7fe9aca] to [257314d339].

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	union {
		uint8_t bytes[64];
		uint32_t words[64];
	} _buffer;
	size_t _bufferLength;
	bool _calculated;
}

- (void)OF_resetState;
@end

Modified src/OFSHA224Or256Hash.m from [4bdaecb076] to [1adbe2ccf4].

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	return (const uint8_t*)_state;
}

- (bool)isCalculated
{
	return _calculated;
}

- (void)reset
{
	[self OF_resetState];
	_bits = 0;
	memset(&_buffer, 0, sizeof(_buffer));
	_bufferLength = 0;
	_calculated = false;
}

- (void)OF_resetState
{
	OF_UNRECOGNIZED_SELECTOR
}
@end

Modified src/OFSHA256Hash.m from [5bfe5983a4] to [3137857ab3].

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	return 32;
}

- init
{
	self = [super init];

	[self OF_resetState];

	return self;
}

- (void)OF_resetState
{
	_state[0] = 0x6A09E667;
	_state[1] = 0xBB67AE85;
	_state[2] = 0x3C6EF372;
	_state[3] = 0xA54FF53A;
	_state[4] = 0x510E527F;
	_state[5] = 0x9B05688C;
	_state[6] = 0x1F83D9AB;
	_state[7] = 0x5BE0CD19;

}
	return self;
}
@end

Modified src/OFSHA384Hash.m from [843549facd] to [6d0c49039d].

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	return 48;
}

- init
{
	self = [super init];

	[self OF_resetState];

	return self;
}

- (void)OF_resetState
{
	_state[0] = 0xCBBB9D5DC1059ED8;
	_state[1] = 0x629A292A367CD507;
	_state[2] = 0x9159015A3070DD17;
	_state[3] = 0x152FECD8F70E5939;
	_state[4] = 0x67332667FFC00B31;
	_state[5] = 0x8EB44A8768581511;
	_state[6] = 0xDB0C2E0D64F98FA7;
	_state[7] = 0x47B5481DBEFA4FA4;

}
	return self;
}
@end

Modified src/OFSHA384Or512Hash.h from [d13d87a9f5] to [468a3cb6e2].

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	union {
		uint8_t bytes[128];
		uint64_t words[80];
	} _buffer;
	size_t _bufferLength;
	bool _calculated;
}

- (void)OF_resetState;
@end

Modified src/OFSHA384Or512Hash.m from [4636315b6a] to [139ebf49f1].

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	return (const uint8_t*)_state;
}

- (bool)isCalculated
{
	return _calculated;
}

- (void)reset
{
	[self OF_resetState];
	memset(&_bits, 0, sizeof(_bits));
	memset(&_buffer, 0, sizeof(_buffer));
	_bufferLength = 0;
	_calculated = false;
}

- (void)OF_resetState
{
	OF_UNRECOGNIZED_SELECTOR
}
@end

Modified src/OFSHA512Hash.m from [bc46710b04] to [e761d41b46].

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	return 64;
}

- init
{
	self = [super init];

	[self OF_resetState];

	return self;
}

- (void)OF_resetState
{
	_state[0] = 0x6A09E667F3BCC908;
	_state[1] = 0xBB67AE8584CAA73B;
	_state[2] = 0x3C6EF372FE94F82B;
	_state[3] = 0xA54FF53A5F1D36F1;
	_state[4] = 0x510E527FADE682D1;
	_state[5] = 0x9B05688C2B3E6C1F;
	_state[6] = 0x1F83D9ABFB41BD6B;
	_state[7] = 0x5BE0CD19137E2179;

}
	return self;
}
@end

Modified utils/ofhash/OFHash.m from [27bb220d00] to [9c55df296d].

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	    @"Usage: %@ [md5|rmd160|sha1|sha224|sha256|sha384|sha512] "
	    @"file1 [file2 ...]\n",
	    [OFApplication programName]];

	[OFApplication terminateWithStatus: 1];
}

static Class
hashClassForName(OFString *name)
static id <OFHash>
hashForName(OFString *name)
{
	if ([name isEqual: @"md5"])
		return [OFMD5Hash class];
		return [OFMD5Hash hash];
	else if ([name isEqual: @"rmd160"] || [name isEqual: @"ripemd160"])
		return [OFRIPEMD160Hash class];
		return [OFRIPEMD160Hash hash];
	else if ([name isEqual: @"sha1"])
		return [OFSHA1Hash class];
		return [OFSHA1Hash hash];
	else if ([name isEqual: @"sha224"])
		return [OFSHA224Hash class];
		return [OFSHA224Hash hash];
	else if ([name isEqual: @"sha256"])
		return [OFSHA256Hash class];
		return [OFSHA256Hash hash];
	else if ([name isEqual: @"sha384"])
		return [OFSHA384Hash class];
		return [OFSHA384Hash hash];
	else if ([name isEqual: @"sha512"])
		return [OFSHA512Hash class];
		return [OFSHA512Hash hash];

	return nil;
}

@implementation OFHash
- (void)applicationDidFinishLaunching
{
	OFArray *arguments = [OFApplication arguments];
	Class <OFHash> hashClass;
	id <OFHash> hash;
	OFEnumerator *enumerator;
	OFString *path;
	int exitStatus = 0;

	if ([arguments count] < 2)
		help();

	if ((hashClass = hashClassForName([arguments objectAtIndex: 0])) == Nil)
	if ((hash = hashForName([arguments firstObject])) == nil)
		help();

	enumerator = [[arguments objectsInRange:
	    of_range(1, [arguments count] - 1)] objectEnumerator];
	while ((path = [enumerator nextObject]) != nil) {
		void *pool = objc_autoreleasePoolPush();
		id <OFHash> hash = [hashClass hash];
		OFStream *file;
		const uint8_t *digest;
		size_t i, digestSize;

		if ([path isEqual: @"-"])
			file = of_stdin;
		else {
			@try {
				file = [OFFile fileWithPath: path
						       mode: @"rb"];
			} @catch (OFOpenFileFailedException *e) {
				[of_stderr writeFormat:
				    @"Failed to open file %@: %s\n",
				    [e path], strerror([e errNo])];

				exitStatus = 1;
				goto outer_loop_end;
			}
		}

		[hash reset];

		while (![file isAtEndOfStream]) {
			uint8_t buffer[1024];
			size_t length;

			@try {
				length = [file readIntoBuffer: buffer
						       length: 1024];
			} @catch (OFReadFailedException *e) {
				[of_stderr writeFormat:
				    @"Failed to read %@: %s\n",
				    path, strerror([e errNo])];

				exitStatus = 1;
				goto outer_loop_end;
			}

			[hash updateWithBuffer: buffer
					length: length];
		}

		[file close];

		digest = [hash digest];
		digestSize = [hashClass digestSize];
		digestSize = [[hash class] digestSize];

		for (i = 0; i < digestSize; i++)
			[of_stdout writeFormat: @"%02x", digest[i]];

		[of_stdout writeFormat: @"  %@\n", path];

outer_loop_end:
		objc_autoreleasePoolPop(pool);
	}

	[OFApplication terminateWithStatus: exitStatus];
}
@end

Fossil 2.23 [47362306a7] 2023-11-01 18:56:47
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