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103 lines
2.2 KiB
C
103 lines
2.2 KiB
C
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/* $NetBSD: sha1hl.c,v 1.2 2001/03/10 15:55:14 tron Exp $ */
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/* $RoughId: sha1hl.c,v 1.2 2001/07/13 19:49:10 knu Exp $ */
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/* $Id$ */
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/* sha1hl.c
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* ----------------------------------------------------------------------------
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* "THE BEER-WARE LICENSE" (Revision 42):
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* <phk@login.dkuug.dk> wrote this file. As long as you retain this notice you
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* can do whatever you want with this stuff. If we meet some day, and you think
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* this stuff is worth it, you can buy me a beer in return. Poul-Henning Kamp
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* ----------------------------------------------------------------------------
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*/
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/* #include "namespace.h" */
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#include "sha1.h"
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#include <fcntl.h>
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#include <assert.h>
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#include <errno.h>
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#include <stdio.h>
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#include <stdlib.h>
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#if defined(HAVE_UNISTD_H)
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# include <unistd.h>
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#endif
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#if defined(LIBC_SCCS) && !defined(lint)
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/* __RCSID("$NetBSD: sha1hl.c,v 1.2 2001/03/10 15:55:14 tron Exp $"); */
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#endif /* LIBC_SCCS and not lint */
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#ifndef _DIAGASSERT
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#define _DIAGASSERT(cond) assert(cond)
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#endif
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/* ARGSUSED */
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char *
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SHA1_End(ctx, buf)
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SHA1_CTX *ctx;
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char *buf;
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{
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int i;
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char *p = buf;
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uint8_t digest[20];
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static const char hex[]="0123456789abcdef";
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_DIAGASSERT(ctx != NULL);
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/* buf may be NULL */
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if (p == NULL && (p = malloc(41)) == NULL)
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return 0;
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SHA1_Final(digest,ctx);
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for (i = 0; i < 20; i++) {
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p[i + i] = hex[((uint32_t)digest[i]) >> 4];
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p[i + i + 1] = hex[digest[i] & 0x0f];
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}
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p[i + i] = '\0';
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return(p);
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}
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char *
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SHA1_File (filename, buf)
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char *filename;
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char *buf;
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{
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uint8_t buffer[BUFSIZ];
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SHA1_CTX ctx;
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int fd, num, oerrno;
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_DIAGASSERT(filename != NULL);
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/* XXX: buf may be NULL ? */
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SHA1_Init(&ctx);
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if ((fd = open(filename,O_RDONLY)) < 0)
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return(0);
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while ((num = read(fd, buffer, sizeof(buffer))) > 0)
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SHA1_Update(&ctx, buffer, (size_t)num);
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oerrno = errno;
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close(fd);
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errno = oerrno;
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return(num < 0 ? 0 : SHA1_End(&ctx, buf));
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}
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char *
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SHA1_Data (data, len, buf)
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const uint8_t *data;
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size_t len;
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char *buf;
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{
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SHA1_CTX ctx;
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_DIAGASSERT(data != NULL);
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/* XXX: buf may be NULL ? */
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SHA1_Init(&ctx);
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SHA1_Update(&ctx, data, len);
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return(SHA1_End(&ctx, buf));
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}
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