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

Revision 1.13, Wed Sep 24 13:18:52 2014 UTC (5 years ago) by christos
Branch: MAIN
CVS Tags: prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9, netbsd-8-base, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, HEAD
Changes since 1.12: +1 -6 lines

undo, the right place for this is compat_defs.h

/*	$NetBSD: mdXhl.c,v 1.13 2014/09/24 13:18:52 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>
 */

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

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

#if !defined(_KERNEL) && defined(__weak_alias) && !defined(HAVE_NBTOOL_CONFIG_H)
#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>

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

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

	MDNAME(Init)(&ctx);
	f = open(filename, O_RDONLY | O_CLOEXEC, 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)(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));
}