File: [local] / openbsd / fw_update / fw_install.sh (download)
Revision 1.47, Thu Dec 2 03:48:13 2021 UTC (2 years, 7 months ago) by afresh1
Branch: MAIN
Changes since 1.46: +1 -2 lines
Don't unpriv signify(1), pledge(2) is enough
|
#!/bin/ksh
# $OpenBSD$
set -e
# Copyright (c) 2021 Andrew Hewus Fresh <afresh1@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.
# Fake up some things from install.sub that we don't need to actually do
prefetcharea_fs_list() {
echo "${DESTDIR}/tmp"
}
# tmpdir, do_as, and unpriv are from install.sub
# modified to use su(1) when not in the installer.
# modified to use mktemp(1) when not in the installer.
# Create a temporary directory based on the supplied directory name prefix.
tmpdir() {
local _i=1 _dir
if [[ -z $1 ]]; then
echo No tmpdir >&2
exit 1
fi
if [[ -e /usr/bin/mktemp ]]; then
_dir=$( /usr/bin/mktemp -d $1 )
chown _sndio "$_dir"
else
until _dir="${1%-+(X)}.$_i.$RANDOM" && mkdir -- "$_dir" 2>/dev/null; do
((++_i < 10000)) || return 1
done
fi
echo "$_dir"
}
# Run a command ($2+) as unprivileged user ($1).
# Take extra care that after "cmd" no "user" processes exist.
#
# Optionally:
# - create "file" and chown it to "user"
# - after "cmd", chown "file" back to root
#
# Usage: do_as user [-f file] cmd
do_as() {
(( $# >= 2 )) || return
local _file _rc _user=$1
shift
if [[ $1 == -f ]]; then
_file=$2
shift 2
fi
if [[ -n $_file ]]; then
>$_file
chown "$_user" "$_file"
fi
if [[ -x /usr/bin/su ]]; then
/usr/bin/su -s /bin/ksh "$_user" -c "$*"
else
doas -u "$_user" "$@"
fi
_rc=$?
while doas -u "$_user" kill -9 -1 2>/dev/null; do
echo "Processes still running for user $_user after: $@"
sleep 1
done
[[ -n $_file ]] && chown root "$_file"
return $_rc
}
unpriv() {
do_as _sndio "$@"
}
VNAME=${VNAME:-$(sysctl -n kern.osrelease)}
VERSION=${VERSION:-"${VNAME%.*}${VNAME#*.}"}
FWDIR=${FWDIR:-$VNAME}
# TODO: We need the firmware for the system we just installed
# not the one we booted from. For example:
# * booting from a snapshot bsd.rd that thinks it is the 7.0 release
# will install the firmware from the 7.0 directory instead of
# from the snapshots dir.
# If they're using sysupgrade, then the installer kernel will be correct.
# If we're doing this in the installer we can check what they picked
# for downloading sets and use that value.
# Otherwise, the fw_update after first boot will fix it up for us.
HTTP_FWDIR=$FWDIR
set -- sed -n "/^OpenBSD $VNAME\([^ ]*\).*$/s//\1/p" /var/run/dmesg.boot
[[ $1 == -!(stable) ]] && HTTP_FWDIR=snapshots
FWURL=http://firmware.openbsd.org/firmware/${HTTP_FWDIR}
FWPUB_KEY=${DESTDIR}/etc/signify/openbsd-${VERSION}-fw.pub
FWPATTERNS="${DESTDIR}/usr/share/misc/firmware_patterns"
# TODO: support srclocal installation of firmware somehow
fw_install() {
local _src=$1 _tmpfs_list _tmpfs _tmpsrc \
_t=Get _cfile="/tmp/SHA256" _pkgdir=${DESTDIR}/var/db/pkg \
_f _r _remove _i _installed
local _srclocal=false _unpriv=unpriv
local _d _drivers=$(
last=''
while read _d _m; do
grep=grep
[ "$last" = "$_d" ] && continue
[ "$_m" ] || _m="^$_d[0-9][0-9]* at "
[ "$_m" = "${_m#^}" ] && grep=fgrep
$grep -q "$_m" /var/run/dmesg.boot || continue
echo $_d
last=$_d
done < $FWPATTERNS
)
if [ -z "$_drivers" ]; then
echo "No devices found which need firmware files to be downloaded."
return
fi
! _tmpfs_list=$(prefetcharea_fs_list) &&
echo "Cannot determine prefetch area" >&2 && return
for _tmpfs in $_tmpfs_list; do
# Try to clean up from previous runs, assuming
# the _tmpfs selection yields the same mount
# point.
for _tmpsrc in $_tmpfs/firmware.+([0-9]).+([0-9]); do
[[ -d $_tmpsrc ]] && rm -r $_tmpsrc
done
# Create a download directory for the firmware and
# check that the _sndio user can read files from
# it. Otherwise cleanup and skip the filesystem.
if _tmpsrc=$(tmpdir "$_tmpfs/firmware-XXXXXXXXX"); then
(
>$_tmpsrc/t &&
$_unpriv cat $_tmpsrc/t
) >/dev/null 2>&1 && break ||
rm -r $_tmpsrc
fi
done
[[ ! -d $_tmpsrc ]] &&
echo "Cannot create prefetch area" >&2 && return 1
# Cleanup from previous runs.
rm -f $_cfile $_cfile.sig
_t=Get/Verify
! $_unpriv ftp -D "$_t" -Vmo - "$_src/SHA256.sig" >"$_cfile.sig" &&
echo "Cannot fetch SHA256.sig" >&2 && return 1
# Verify signature file with public keys.
! signify -Vep $FWPUB_KEY -x "$_cfile.sig" -m "$_cfile" &&
echo "Signature check of SHA256.sig failed" >&2 && return 1
for _d in $_drivers; do
_f=$( sed -n "s/.*(\($_d-firmware-.*\.tgz\)).*/\1/p" "$_cfile" | sed '$!d' )
_installed=$(
for fw in "${_pkgdir}/$_d-firmware"*; do
[ -e "$fw" ] || continue
echo ${fw##*/}
done
)
for _i in $_installed; do
if [ "$_f" = "$_i.tgz" ]; then
echo "$_i already installed"
continue 2
fi
done
rm -f /tmp/h /tmp/fail
# Fetch firmware file and create a checksum by piping through
# sha256. Create a flag file in case ftp failed. Firmware
# from net is written to the prefetch area.
( $_unpriv ftp -D "$_t" -Vmo - "$_src/$_f" || >/tmp/fail ) |
( $_srclocal && sha256 -b >/tmp/h ||
sha256 -bph /tmp/h >"$_tmpsrc/$_f" )
# Handle failed transfer.
if [[ -f /tmp/fail ]]; then
rm -f "$_tmpsrc/$_f"
echo "Fetching of $_f failed!" >&2
continue
fi
# Verify firmware by comparing its checksum with SHA256.
if ! fgrep -qx "SHA256 ($_f) = $(</tmp/h)" "$_cfile"; then
[[ -d "$_tmpsrc" ]] && rm -rf "$_tmpsrc"
echo "Checksum test for $_f failed." >&2
continue
fi
# TODO: Check hash for files before deleting
if [ "$_installed" ] && [ -e "${_pkgdir}/$_installed/+CONTENTS" ]; then
echo "Uninstalling $_installed"
cwd=${_pkgdir}/$_installed
set -A _remove -- "${cwd}/+CONTENTS" "${cwd}"
while read c g; do
case $c in
@cwd) cwd="${DESTDIR}/$g"
;;
@*) continue
;;
*) set -A _remove -- "$cwd/$c" "${_remove[@]}"
;;
esac
done < "${_pkgdir}/$_installed/+CONTENTS"
# We specifically rm -f here because not removing files/dirs
# is probably not worth failing over.
for _r in "${_remove[@]}" ; do
if [ -d "$_r" ]; then
# Try hard not to actually remove recursively
# without rmdir on the install media.
[ "$_r/*" = $( echo "$_r"/* ) ] && rm -rf "$_r"
else
rm -f "$_r"
fi
done
fi
# TODO: Should we mark these so real fw_update can -Drepair?
ftp -D "Install" -Vmo- "file:$_tmpsrc/$_f" |
tar -s ",^\+,${_pkgdir}/${_f%.tgz}/+," \
-s ",^firmware,${DESTDIR}/etc/firmware," \
-C / -zxphf - "+*" "firmware/*"
ed -s "${_pkgdir}/${_f%.tgz}/+CONTENTS" <<EOL
/^@comment pkgpath/ -1a
@option manual-installation
@option firmware
@comment install-script
.
w
EOL
done
}
fw_install "$FWURL"