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Allow reading the checksum list from stdin if no file is given with -c.

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This allows verifying the checksums e.g. after downloading a NetBSD
release:
		cat BSDSUM CKSUM MD5 SHA512 SYSVSUM | cksum -c
This commit is contained in:
hubertf 2006-04-24 21:07:43 +00:00
parent 14a07a0706
commit 0b4add3077
2 changed files with 32 additions and 26 deletions
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31
usr.bin/cksum/cksum.1
View File

@ -1,4 +1,4 @@
.\" $NetBSD: cksum.1,v 1.35 2006/04/23 17:45:04 wiz Exp $
.\" $NetBSD: cksum.1,v 1.36 2006/04/24 21:07:43 hubertf Exp $
.\"
.\" Copyright (c) 1991, 1993
.\" The Regents of the University of California. All rights reserved.
@ -49,18 +49,18 @@
.Op Fl nw
.Oo
.Fl a Ar algorithm |
.Fl c Ar file |
.Fl c |
.Op Fl o Ar 1 | Ar 2
.Oc
.Op Ar
.Nm sum
.Op Fl w
.Op Fl c Ar file
.Op Fl c
.Op Ar
.Nm md2
.Op Fl nw
.Oo
.Fl c Ar file |
.Fl c |
.Fl p |
.Fl t |
.Fl x |
@ -70,7 +70,7 @@
.Nm md4
.Op Fl nw
.Oo
.Fl c Ar file |
.Fl c |
.Fl p |
.Fl t |
.Fl x |
@ -80,7 +80,7 @@
.Nm md5
.Op Fl nw
.Oo
.Fl c Ar file |
.Fl c |
.Fl p |
.Fl t |
.Fl x |
@ -90,7 +90,7 @@
.Nm sha1
.Op Fl nw
.Oo
.Fl c Ar file |
.Fl c |
.Fl p |
.Fl t |
.Fl x |
@ -100,7 +100,7 @@
.Nm rmd160
.Op Fl nw
.Oo
.Fl c Ar file |
.Fl c |
.Fl p |
.Fl t |
.Fl x |
@ -210,18 +210,19 @@ and
.Fl o Ar 2 ,
respectively.
The default is CRC.
.It Fl c Ar file
Verify a list of checksums generated by the
.Nm
program and stored in
.Pa file
against files on disk.
.It Fl c
Verify (check) files against a list of checksums.
The list is read from a filename given on the command line, or from
stdin if no filename is given.
E.g. first run
.Dl Ic md5 *.tgz \*[Gt] MD5
.Dl Ic sha1 *.tgz \*[Gt] SHA1
to generate a list of MD5 checksums in
.Pa MD5 ,
then use the following command to verify them:
.Dl Ic md5 -c MD5
.Dl Ic cat MD5 SHA1 | cksum -c
If an error is found during checksum verification, an error
message is printed, and the program returns an error code of 1.
.It Fl o
Use historic algorithms instead of the (superior) default one.
.Pp

27
usr.bin/cksum/cksum.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: cksum.c,v 1.34 2006/04/24 19:41:41 hubertf Exp $ */
/* $NetBSD: cksum.c,v 1.35 2006/04/24 21:07:43 hubertf Exp $ */
/*-
* Copyright (c) 1991, 1993
@ -81,7 +81,7 @@ __COPYRIGHT("@(#) Copyright (c) 1991, 1993\n\
#if 0
static char sccsid[] = "@(#)cksum.c 8.2 (Berkeley) 4/28/95";
#endif
__RCSID("$NetBSD: cksum.c,v 1.34 2006/04/24 19:41:41 hubertf Exp $");
__RCSID("$NetBSD: cksum.c,v 1.35 2006/04/24 21:07:43 hubertf Exp $");
#endif /* not lint */
#include <sys/cdefs.h>
@ -163,15 +163,14 @@ main(int argc, char **argv)
int (*cfncn) (int, u_int32_t *, off_t *);
void (*pfncn) (char *, u_int32_t, off_t);
struct hash *hash;
int normal, i, check_warn;
char *checkfile;
int normal, i, check_warn, do_check;
cfncn = NULL;
pfncn = NULL;
dosum = pflag = nohashstdin = 0;
normal = 0;
checkfile = NULL;
check_warn = 0;
do_check = 0;
setlocale(LC_ALL, "");
@ -199,7 +198,7 @@ main(int argc, char **argv)
* are still supported in code to not break anything that might
* be using them.
*/
while ((ch = getopt(argc, argv, "a:c:mno:ps:twx12456")) != -1)
while ((ch = getopt(argc, argv, "a:cmno:ps:twx12456")) != -1)
switch(ch) {
case 'a':
if (hash != NULL || dosum) {
@ -267,7 +266,7 @@ main(int argc, char **argv)
hash = &hashes[HASH_RMD160];
break;
case 'c':
checkfile = optarg;
do_check = 1;
break;
case 'n':
normal = 1;
@ -322,7 +321,7 @@ main(int argc, char **argv)
argc -= optind;
argv += optind;
if (checkfile) {
if (do_check) {
/*
* Verify checksums
*/
@ -336,10 +335,16 @@ main(int argc, char **argv)
rval = 0;
cnt = badcnt = 0;
f = fopen(checkfile, "r");
if (argc == 0) {
f = fdopen(STDIN_FILENO, "r");
} else {
f = fopen(argv[0], "r");
}
if (f == NULL)
err(1, "Cannot read %s", checkfile);
err(1, "Cannot read %s",
argc>0?argv[0]:"stdin");
while(fgets(buf, sizeof(buf), f) != NULL) {
s=strrchr(buf, '\n');
if (s)