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File: [cvs.NetBSD.org] / src / lib / libc / md / mdXhl.c (download)

Revision 1.7, Mon Sep 26 03:01:41 2005 UTC (18 years, 6 months ago) by christos
Branch: MAIN
CVS Tags: yamt-pf42-baseX, yamt-pf42-base4, yamt-pf42-base3, yamt-pf42-base2, yamt-pf42-base, yamt-pf42, wrstuden-revivesa-base-3, wrstuden-revivesa-base-2, wrstuden-revivesa-base-1, wrstuden-revivesa-base, wrstuden-revivesa, wrstuden-fixsa-newbase, wrstuden-fixsa-base-1, wrstuden-fixsa-base, wrstuden-fixsa, netbsd-5-base, netbsd-5-0-RC3, netbsd-5-0-RC2, netbsd-5-0-RC1, netbsd-4-base, netbsd-4-0-RELEASE, netbsd-4-0-RC5, netbsd-4-0-RC4, netbsd-4-0-RC3, netbsd-4-0-RC2, netbsd-4-0-RC1, netbsd-4-0-1-RELEASE, netbsd-4-0, netbsd-4, mjf-devfs2-base, mjf-devfs2, matt-mips64-base2, matt-mips64-base, matt-mips64, matt-armv6-prevmlocking, matt-armv6-nbase, matt-armv6-base, matt-armv6, keiichi-mipv6-base, keiichi-mipv6, hpcarm-cleanup-nbase, hpcarm-cleanup-base, hpcarm-cleanup, cube-autoconf-base, cube-autoconf, christos-time_t-nbase, christos-time_t-base, christos-time_t, abandoned-netbsd-4-base, abandoned-netbsd-4
Branch point for: netbsd-5, jym-xensuspend
Changes since 1.6: +21 -4 lines 

The weak alias macros can only work before namespace.h gets included because
when the strings get expanded we gain an _ from namespace.h. So define a
macro to point to the appropriate include file for the hash function, and
include the hash function later, from the .c file we always include. This
allows us to eliminate the hack of including namespace.h twice as well as
nbtool_config.h.

/*	$NetBSD: mdXhl.c,v 1.7 2005/09/26 03:01:41 christos Exp $	*/

/*
 * ----------------------------------------------------------------------------
 * "THE BEER-WARE LICENSE" (Revision 42):
 * <phk@login.dkuug.dk> wrote this file.  As long as you retain this notice you
 * can do whatever you want with this stuff. If we meet some day, and you think
 * this stuff is worth it, you can buy me a beer in return.   Poul-Henning Kamp
 * ----------------------------------------------------------------------------
 *
 * from FreeBSD Id: mdXhl.c,v 1.8 1996/10/25 06:48:12 bde Exp
 */

/*
 * Modified April 29, 1997 by Jason R. Thorpe <thorpej@NetBSD.org>
 */

#define	CONCAT(x,y)	__CONCAT(x,y)
#define	MDNAME(x)	CONCAT(MDALGORITHM,x)

#if !defined(_KERNEL) && defined(__weak_alias)
#define	WA(a,b)	__weak_alias(a,b)
WA(MDNAME(End),CONCAT(_,MDNAME(End)))
WA(MDNAME(File),CONCAT(_,MDNAME(File)))
WA(MDNAME(Data),CONCAT(_,MDNAME(Data)))
#undef WA
#endif

#include "namespace.h"

#include <sys/types.h>

#include MDINCLUDE
#include <assert.h>
#include <fcntl.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

#if HAVE_NBTOOL_CONFIG_H
#include "nbtool_config.h"
#endif



char *
MDNAME(End)(ctx, buf)
	MDNAME(_CTX) *ctx;
	char *buf;
{
	int i;
	unsigned char digest[16];
	static const char hex[]="0123456789abcdef";

	_DIAGASSERT(ctx != 0);

	if (buf == NULL)
		buf = malloc(33);
	if (buf == NULL)
		return (NULL);

	MDNAME(Final)(digest, ctx);

	for (i = 0; i < 16; i++) {
		buf[i+i] = hex[(u_int32_t)digest[i] >> 4];
		buf[i+i+1] = hex[digest[i] & 0x0f];
	}

	buf[i+i] = '\0';
	return (buf);
}

char *
MDNAME(File)(filename, buf)
	const char *filename;
	char *buf;
{
	unsigned char buffer[BUFSIZ];
	MDNAME(_CTX) ctx;
	int f, i, j;

	_DIAGASSERT(filename != 0);
	/* buf may be NULL */

	MDNAME(Init)(&ctx);
	f = open(filename, O_RDONLY, 0666);
	if (f < 0)
		return NULL;

	while ((i = read(f, buffer, sizeof(buffer))) > 0)
		MDNAME(Update)(&ctx, buffer, (unsigned int)i);

	j = errno;
	close(f);
	errno = j;

	if (i < 0)
		return NULL;

	return (MDNAME(End)(&ctx, buf));
}

char *
MDNAME(Data)(data, len, buf)
	const unsigned char *data;
	unsigned int len;
	char *buf;
{
	MDNAME(_CTX) ctx;

	_DIAGASSERT(data != 0);

	MDNAME(Init)(&ctx);
	MDNAME(Update)(&ctx, data, len);
	return (MDNAME(End)(&ctx, buf));
}