checksum revision 219615 
1#!/bin/sh
2#-
3# Copyright (c) 2011 Nathan Whitehorn
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14#
15# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18# ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25# SUCH DAMAGE.
26#
27# $FreeBSD: head/usr.sbin/bsdinstall/scripts/checksum 219615 2011-03-13 17:15:31Z nwhitehorn $
28
29test -f $BSDINSTALL_DISTDIR/MANIFEST || exit 0
30
31percentage=0
32for dist in $DISTRIBUTIONS; do
33	distname=$(basename $dist .txz)
34	eval "status_$distname=7"
35	
36	items=""
37	for i in $DISTRIBUTIONS; do
38		items="$items $i `eval echo \\\${status_$(basename $i .txz):-Pending}`"
39	done
40	dialog --backtitle "FreeBSD Installer" --title "Checksum Verification" \
41	    --mixedgauge "Verifying checksums of selected distributions." \
42	    0 0 $percentage $items
43
44	CK=`sha256 -q $BSDINSTALL_DISTDIR/$dist`
45	awk -v checksum=$CK -v dist=$dist '{
46		if (dist == $1) {
47			if (checksum == $2)
48				exit(0)
49			else
50				exit(1)
51		}
52	}' $BSDINSTALL_DISTDIR/MANIFEST
53
54	if [ $? -eq 0 ]; then
55		eval "status_$distname=2"
56		percentage=$(echo $percentage + 100/`echo $DISTRIBUTIONS | wc -w` | bc)
57	else
58		eval "status_$distname=1"
59		dialog --backtitle "FreeBSD Installer" --title "Error" \
60		    --msgbox "The checksum for $dist does not match. It may have become corrupted, and should be redownloaded." 0 0
61		exit 1
62	fi
63done
64
65exit 0
66