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#!/bin/ksh
#
# $OpenBSD: sysupgrade.sh,v 1.9 2019/05/03 13:04:40 florian Exp $
#
# Copyright (c) 1997-2015 Todd Miller, Theo de Raadt, Ken Westerback
# Copyright (c) 2015 Robert Peichaer <rpe@openbsd.org>
# Copyright (c) 2016, 2017 Antoine Jacoutot <ajacoutot@openbsd.org>
# Copyright (c) 2019 Christian Weisgerber <naddy@openbsd.org>
# Copyright (c) 2019 Florian Obser <florian@openbsd.org>
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
set -e
umask 0022
ARCH=$(uname -m)
SETSDIR=/home/_sysupgrade
ug_err()
{
echo "${1}" 1>&2 && return ${2:-1}
}
usage()
{
ug_err "usage: ${0##*/} [-cf] [installurl]"
}
unpriv()
{
local _file=$2 _user=_syspatch
if [[ $1 == -f && -n ${_file} ]]; then
>${_file}
chown "${_user}" "${_file}"
shift 2
fi
(($# >= 1))
eval su -s /bin/sh ${_user} -c "'$@'"
}
# Remove all occurrences of first argument from list formed by the remaining
# arguments.
rmel() {
local _a=$1 _b _c
shift
for _b; do
[[ $_a != "$_b" ]] && _c="${_c:+$_c }$_b"
done
echo -n "$_c"
}
CURRENT=false
FORCE=false
while getopts cf arg; do
case ${arg} in
c) CURRENT=true;;
f) FORCE=true;;
*) usage;;
esac
done
set -A _KERNV -- $(sysctl -n kern.version |
sed 's/^OpenBSD \([0-9]\)\.\([0-9]\)\([^ ]*\).*/\1.\2 \3/;q')
shift $(( OPTIND -1 ))
case $# in
0) MIRROR=$(sed 's/#.*//;/^$/d' /etc/installurl) 2>/dev/null ||
MIRROR=https://cdn.openbsd.org/pub/OpenBSD
;;
1) MIRROR=$1
;;
*) usage
esac
if [[ ${#_KERNV[*]} == 2 ]]; then
CURRENT=true
fi
NEXT_VERSION=$(echo ${_KERNV[0]} + 0.1 | bc)
if $CURRENT; then
URL=${MIRROR}/snapshots/${ARCH}/
else
URL=${MIRROR}/${NEXT_VERSION}/${ARCH}/
fi
if [[ -e ${SETSDIR} ]]; then
eval $(stat -s ${SETSDIR})
[[ $st_uid -eq 0 ]] ||
ug_err "${SETSDIR} needs to be owned by root:wheel"
[[ $st_gid -eq 0 ]] ||
ug_err "${SETSDIR} needs to be owned by root:wheel"
[[ $st_mode -eq 040755 ]] ||
ug_err "${SETSDIR} is not a directory with permissions 0755"
else
mkdir -p ${SETSDIR}
fi
cd ${SETSDIR}
unpriv -f SHA256.sig ftp -Vmo SHA256.sig ${URL}SHA256.sig
if cmp -s /var/db/installed.SHA256.sig SHA256.sig && ! $FORCE; then
ug_err "Already on latest snapshot."
fi
_KEY=openbsd-${_KERNV[0]%.*}${_KERNV[0]#*.}-base.pub
_NEXTKEY=openbsd-${NEXT_VERSION%.*}${NEXT_VERSION#*.}-base.pub
read _LINE <SHA256.sig
case ${_LINE} in
*\ ${_KEY}) SIGNIFY_KEY=/etc/signify/${_KEY} ;;
*\ ${_NEXTKEY}) SIGNIFY_KEY=/etc/signify/${_NEXTKEY} ;;
*) ug_err "invalid signing key" ;;
esac
[[ -f ${SIGNIFY_KEY} ]] || ug_err "cannot find ${SIGNIFY_KEY}"
unpriv -f SHA256 signify -Veq -p "${SIGNIFY_KEY}" -x SHA256.sig -m SHA256
# INSTALL.*, bsd*, *.tgz
SETS=$(sed -n -e 's/^SHA256 (\(.*\)) .*/\1/' \
-e '/^INSTALL\./p;/^bsd/p;/\.tgz$/p' SHA256)
OLD_FILES=$(ls)
OLD_FILES=$(rmel SHA256 $OLD_FILES)
OLD_FILES=$(rmel SHA256.sig $OLD_FILES)
DL=$SETS
for f in $SETS; do
if cksum -C SHA256 $f >/dev/null 2>&1; then
DL=$(rmel $f ${DL})
OLD_FILES=$(rmel $f ${OLD_FILES})
fi
done
[[ -n ${OLD_FILES} ]] && rm ${OLD_FILES}
for f in ${DL}; do
unpriv -f $f ftp -Vmo ${f} ${URL}${f}
done
# re-check signature after downloads
echo Verifying sets.
unpriv signify -qC -p "${SIGNIFY_KEY}" -x SHA256.sig ${SETS}
cp bsd.rd /nbsd.upgrade
ln -f /nbsd.upgrade /bsd.upgrade
rm /nbsd.upgrade
echo Upgrading.
exec reboot
|
