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Get md5(1) to use getopt(3). Also some minor -Wall cleaning

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while here.

PR:		5387
Submitted by:	Matthew Hunt <mph@pobox.com>
This commit is contained in:
Steve Price 1997-12-29 03:40:37 +00:00
parent b497d31373
commit 716847a669
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=32074
2 changed files with 50 additions and 33 deletions
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24
sbin/md5/md5.1
View File

@ -6,11 +6,9 @@
.Nd calculate a message-digest fingerprint (checksum) for a file
.Sh SYNOPSIS
.Nm
.Op Fl p
.Op Fl t
.Op Fl x
.Op Fl s Ns Ar string
.Op Ar filename Ns Pq s
.Op Fl ptx
.Op Fl s Ar string
.Op Ar file ...
.Sh DESCRIPTION
.Nm
takes as input a message of arbitrary length and produces
@ -29,24 +27,20 @@ in a secure manner before being encrypted with a private
key under a public-key cryptosystem such as
.Em RSA .
.Pp
The following four options may be used in any combination, except
that
.Ar filename Ns Pq s
must be the last objects on the command line.
The following four options may be used in any combination and must
precede any files named on the command line. The MD5
sum of each file listed on the command line is printed after the options
are processed.
.Bl -tag -width Fl
.It Fl s Ns Ar string
.It Fl s Ar string
prints a checksum of the given
.Dq string .
.Ar string .
.It Fl p
echos stdin to stdout and appends the MD5 sum to stdout.
.It Fl t
runs a built-in time trial.
.It Fl x
runs a built-in test script.
.It Ar filename Ns Pq s
prints a checksum
.Pq s
for each of the files.
.El
.Sh SEE ALSO
.Xr cksum 1

59
sbin/md5/md5.c
View File

@ -1,5 +1,5 @@
/*
* $Id$
* $Id: md5.c,v 1.10 1997/02/22 14:32:37 peter Exp $
*
* Derived from:
*/
@ -27,6 +27,7 @@
#include <stdio.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "global.h"
@ -40,6 +41,7 @@ static void MDString PROTO_LIST((char *));
static void MDTimeTrial PROTO_LIST((void));
static void MDTestSuite PROTO_LIST((void));
static void MDFilter PROTO_LIST((int));
static void usage PROTO_LIST((void));
/* Main driver.
@ -59,24 +61,34 @@ main(argc, argv)
char *p;
char buf[33];
if (argc > 1)
for (i = 1; i < argc; i++)
if (argv[i][0] == '-' && argv[i][1] == 's')
MDString(argv[i] + 2);
else if (strcmp(argv[i], "-t") == 0)
MDTimeTrial();
else if (strcmp(argv[i], "-p") == 0)
if (argc > 1) {
while ((i = getopt(argc, argv, "ps:tx")) != EOF) {
switch (i) {
case 'p':
MDFilter(1);
else if (strcmp(argv[i], "-x") == 0)
break;
case 's':
MDString(optarg);
break;
case 't':
MDTimeTrial();
break;
case 'x':
MDTestSuite();
else {
p = MD5File(argv[i],buf);
if (!p)
perror(argv[i]);
else
printf("MD5 (%s) = %s\n", argv[i], p);
break;
default:
usage();
}
else
}
while (optind < argc) {
p = MD5File(argv[optind], buf);
if (!p)
perror(argv[optind]);
else
printf("MD5 (%s) = %s\n", argv[optind], p);
optind++;
}
} else
MDFilter(0);
return (0);
@ -162,11 +174,11 @@ MDFilter(int pipe)
{
MD5_CTX context;
int len;
unsigned char buffer[BUFSIZ], digest[16];
unsigned char buffer[BUFSIZ];
char buf[33];
MD5Init(&context);
while (len = fread(buffer, 1, BUFSIZ, stdin)) {
while ((len = fread(buffer, 1, BUFSIZ, stdin))) {
if(pipe && (len != fwrite(buffer, 1, len, stdout))) {
perror("stdout");
exit(1);
@ -175,3 +187,14 @@ MDFilter(int pipe)
}
printf("%s\n", MD5End(&context,buf));
}
/*
* Displays a usage summary.
*/
static void
usage(void)
{
(void)fprintf(stderr,
"usage: md5 [-ptx] [-s string] [file ...]\n");
exit(1);
}