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/* sha1hl.c
* ----------------------------------------------------------------------------
* "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
* ----------------------------------------------------------------------------
*/
#if defined(LIBC_SCCS) && !defined(lint)
static const char rcsid[] = "$OpenBSD: sha1hl.c,v 1.5 2003/05/09 16:46:31 millert Exp $";
#endif /* LIBC_SCCS and not lint */
#include <sys/types.h>
#include <errno.h>
#include <fcntl.h>
#include <sha1.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
/* ARGSUSED */
char *
SHA1End(SHA1_CTX *ctx, char *buf)
{
int i;
u_char digest[20];
static const char hex[]="0123456789abcdef";
if (buf == NULL && (buf = malloc(41)) == NULL)
return(NULL);
SHA1Final(digest,ctx);
for (i = 0; i < 20; i++) {
buf[i + i] = hex[digest[i] >> 4];
buf[i + i + 1] = hex[digest[i] & 0x0f];
}
buf[i + i] = '\0';
memset(digest, 0, sizeof(digest));
return(buf);
}
char *
SHA1File (char *filename, char *buf)
{
u_char buffer[BUFSIZ];
SHA1_CTX ctx;
int fd, num, oerrno;
SHA1Init(&ctx);
if ((fd = open(filename, O_RDONLY)) < 0)
return(0);
while ((num = read(fd, buffer, sizeof(buffer))) > 0)
SHA1Update(&ctx, buffer, num);
oerrno = errno;
close(fd);
errno = oerrno;
return(num < 0 ? 0 : SHA1End(&ctx, buf));
}
char *
SHA1Data (const u_char *data, size_t len, char *buf)
{
SHA1_CTX ctx;
SHA1Init(&ctx);
SHA1Update(&ctx, data, len);
return(SHA1End(&ctx, buf));
}
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