freebsd-skq/usr.sbin/bsdinstall/scripts/checksum
emaste 8f97406478 bsdinstall: improve checksum mismatch error for snapshots
The usual case of a mismatched checksum for installer snapshots
(e.g., -CURRENT, -ALPHA*) is that a newer snapshot has been built and
the old install sets have been replaced.  Provide a specific error
message for checksum mismatches there that suggests looking for a newer
snapshot.

Submitted by:	Guangyuan Yang <yzgyyang@outlook.com>
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D11641
2017-07-19 18:25:52 +00:00

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#!/bin/sh
#-
# Copyright (c) 2011 Nathan Whitehorn
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
test -f $BSDINSTALL_DISTDIR/MANIFEST || exit 0
percentage=0
for dist in $DISTRIBUTIONS; do
distname=$(basename $dist .txz)
eval "status_$distname=7"
items=""
for i in $DISTRIBUTIONS; do
items="$items $i `eval echo \\\${status_$(basename $i .txz):-Pending}`"
done
dialog --backtitle "FreeBSD Installer" --title "Checksum Verification" \
--mixedgauge "Verifying checksums of selected distributions." \
0 0 $percentage $items
CK=`sha256 -q $BSDINSTALL_DISTDIR/$dist`
awk -v checksum=$CK -v dist=$dist -v found=0 '{
if (dist == $1) {
found = 1
if (checksum == $2)
exit(0)
else
exit(2)
}
} END {if (!found) exit(1);}' $BSDINSTALL_DISTDIR/MANIFEST
CK_VALID=$?
if [ $CK_VALID -le 1 ]; then
if [ $CK_VALID -eq 0 ]; then
eval "status_$distname=2"
else
eval "status_$distname=6"
fi
percentage=$(echo $percentage + 100/`echo $DISTRIBUTIONS | wc -w` | bc)
else
eval "status_$distname=1"
case $(/bin/freebsd-version -u) in
*-ALPHA*|*-CURRENT|*-STABLE|*-PRERELEASE)
dialog --backtitle "FreeBSD Installer" --title "Error" \
--msgbox "The checksum for $dist does not match. It may have become corrupted, or it may be from a newer version of FreeBSD. Please check for a newer snapshot." 0 0
;;
*)
dialog --backtitle "FreeBSD Installer" --title "Error" \
--msgbox "The checksum for $dist does not match. It may have become corrupted, and should be redownloaded." 0 0
;;
esac
exit 1
fi
done
exit 0