NetBSD/etc/postinstall

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#!/bin/sh
#
# $NetBSD: postinstall,v 1.39 2002/11/22 15:51:42 thorpej Exp $
#
# Copyright (c) 2002 The NetBSD Foundation, Inc.
# All rights reserved.
#
# This code is derived from software contributed to The NetBSD Foundation
# by Luke Mewburn.
#
# 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.
# 3. All advertising materials mentioning features or use of this software
# must display the following acknowledgement:
# This product includes software developed by the NetBSD
# Foundation, Inc. and its contributors.
# 4. Neither the name of The NetBSD Foundation nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
#
# postinstall
# check for or fix configuration changes that occur
# over time as NetBSD evolves.
#
#
# checks to add:
# - sysctl(8) renames
# - de* -> tlp* migration (/etc/ifconfig.de*, $ifconfig_de*,
# dhclient.conf, ...) ?
# - support quiet/verbose mode ?
#
#
# helper functions
#
err()
{
exitval=$1
shift
echo 1>&2 "${PROGNAME}: $@"
exit ${exitval}
}
warn()
{
echo 1>&2 "${PROGNAME}: $@"
}
msg()
{
echo " $@"
}
# additem item description
# add item to list of supported items to check/fix
#
additem()
{
[ $# -eq 2 ] || err 2 "USAGE: additem item description"
items="${items}${items:+ }$1"
eval desc_$1=\"$2\"
}
# checkdir op dir mode
# ensure dir exists, and if not, create it with the appropriate mode.
# returns 0 if ok, 1 otherwise.
#
check_dir()
{
[ $# -eq 3 ] || err 2 "USAGE: check_dir op dir mode"
_cdop=$1
_cddir=$2
_cdmode=$3
[ -d "${_cddir}" ] && return 0
if [ "${_cdop}" = "check" ]; then
msg "${_cddir} is not a directory"
return 1
elif ! mkdir -m "${_cdmode}" "${_cddir}" ; then
msg "Can't create missing ${_cddir}"
return 1
else
msg "Missing ${_cddir} created"
fi
return 0
}
# check_ids op type file id [...]
# check if file of type "users" or "groups" contains the relevant ids
# returns 0 if ok, 1 otherwise.
#
check_ids()
{
[ $# -ge 4 ] || err 2 "USAGE: checks_ids op type file id [...]"
_op=$1
_type=$2
_file=$3
shift 3
_ids="$@"
if [ ! -f "${_file}" ]; then
msg "${_file} doesn't exist; can't check for missing ${_type}"
return 1
fi
if [ ! -r "${_file}" ]; then
msg "${_file} is not readable; can't check for missing ${_type}"
return 1
fi
_notfixed=""
if [ "${_op}" = "fix" ]; then
_notfixed=${NOT_FIXED}
fi
_missing=$(awk -F: '
BEGIN {
for (x = 1; x < ARGC; x++)
idlist[ARGV[x]]++
ARGC=1
}
{
found[$1]++
}
END {
for (id in idlist) {
if (! (id in found))
print id
}
}
' ${_ids} < ${_file}) || return 1
if [ -n "${_missing}" ]; then
msg "Missing ${_type}${_notfixed}:" $(echo ${_missing})
return 1
fi
return 0
}
# compare_dir op src dest mode file [file ...]
# perform op ("check" or "fix") on files in src/ against dest/
# returns 0 if ok, 1 otherwise.
#
compare_dir()
{
[ $# -ge 5 ] || err 2 "USAGE: compare_dir op src dest mode file [...]"
_op=$1
_src=$2
_dest=$3
_mode=$4
shift 4
_files="$@"
if [ ! -d "${_src}" ]; then
msg "${_src} is not a directory; skipping check"
return 1
fi
check_dir ${_op} ${_dest} 755 || return 1
_cmpdir_rv=0
for f in ${_files}; do
fs=${_src}/${f}
fd=${_dest}/${f}
_error=""
if [ ! -f "${fd}" ]; then
_error="${fd} does not exist"
elif ! cmp -s ${fs} ${fd} ; then
_error="${fs} != ${fd}"
else
continue
fi
if [ "${_op}" = "check" ]; then
msg ${_error}
_cmpdir_rv=1
elif ! cp -f ${fs} ${fd}; then
msg "Can't copy ${fs} to ${fd}"
_cmpdir_rv=1
elif ! chmod ${_mode} ${fd}; then
msg "Can't change mode of ${fd} to ${_mode}"
_cmpdir_rv=1
else
msg "Copied ${fs} to ${fd}"
fi
done
return ${_cmpdir_rv}
}
# move_file op src dest --
# check (op == "check") or move (op != "check") from src to dest.
# returns 0 if ok, 1 otherwise.
#
move_file()
{
[ $# -eq 3 ] || err 2 "USAGE: move_file op src dest"
_fm_op=$1
_fm_src=$2
_fm_dest=$3
if [ -f "${_fm_src}" -a ! -f "${_fm_dest}" ]; then
if [ "${_fm_op}" = "check" ]; then
msg "Move ${_fm_src} to ${_fm_dest}"
return 1
fi
if ! mv ${_fm_src} ${_fm_dest}; then
msg "Can't move ${_fm_src} to ${_fm_dest}"
return 1
fi
msg "Moved ${_fm_src} to ${_fm_dest}"
fi
return 0
}
# rcconf_is_set op name var --
# load the rcconf for name, and check if obsolete rc.conf(5) variable
# var is defined or not.
# returns 0 if defined (even to ""), otherwise 1.
#
rcconf_is_set()
{
[ $# -eq 3 ] || err 2 "USAGE: rcconf_is_set op name var"
_rcis_op=$1
_rcis_name=$2
_rcis_var=$3
_rcis_notfixed=""
if [ "${_rcis_op}" = "fix" ]; then
_rcis_notfixed=${NOT_FIXED}
fi
(
for f in \
${DEST_DIR}/etc/rc.conf \
${DEST_DIR}/etc/rc.conf.d/${_rcis_name}; do
[ -f "${f}" ] && . "${f}";
done
if eval "[ -n \"\${${_rcis_var}}\" \
-o \"\${${_rcis_var}-UNSET}\" != \"UNSET\" ]"; then
msg \
"Obsolete rc.conf(5) variable '\$${_rcis_var}' found.${_rcis_notfixed}"
exit 0
else
exit 1
fi
)
}
#
# items
# -----
#
#
# defaults
#
additem defaults "/etc/defaults/ being up to date"
do_defaults()
{
[ -n "$1" ] || err 2 "USAGE: do_defaults fix|check"
compare_dir $1 ${SRC_DIR}/etc/defaults ${DEST_DIR}/etc/defaults 444 \
daily.conf monthly.conf rc.conf security.conf weekly.conf
}
#
# mtree
#
additem mtree "/etc/mtree/ being up to date"
do_mtree()
{
[ -n "$1" ] || err 2 "USAGE: do_mtree fix|check"
compare_dir $1 ${SRC_DIR}/etc/mtree ${DEST_DIR}/etc/mtree 444 \
NetBSD.dist special
}
#
# gid
#
additem gid "required GIDs"
do_gid()
{
[ -n "$1" ] || err 2 "USAGE: do_gid fix|check"
check_ids $1 groups "${DEST_DIR}/etc/group" \
named ntpd sshd smmsp
}
#
# uid
#
additem uid "required UIDs"
do_uid()
{
[ -n "$1" ] || err 2 "USAGE: do_uid fix|check"
check_ids $1 users "${DEST_DIR}/etc/master.passwd" \
named ntpd sshd smmsp
}
#
# periodic
#
additem periodic "/etc/{daily,weekly,monthly,security} being up to date"
do_periodic()
{
[ -n "$1" ] || err 2 "USAGE: do_periodic fix|check"
compare_dir $1 ${SRC_DIR}/etc ${DEST_DIR}/etc 644 \
daily weekly monthly security
}
#
# rc
#
additem rc "/etc/rc* and /etc/rc.d/ being up to date"
do_rc()
{
[ -n "$1" ] || err 2 "USAGE: do_rc fix|check"
op=$1
failed=0
compare_dir ${op} ${SRC_DIR}/etc ${DEST_DIR}/etc 644 \
rc rc.subr rc.shutdown
failed=$(( ${failed} + $? ))
compare_dir ${op} ${SRC_DIR}/etc/rc.d ${DEST_DIR}/etc/rc.d 555 \
DAEMON LOGIN NETWORKING SERVERS accounting altqd amd \
apmd bootparams bootconf.sh ccd cgd cleartmp cron \
dhclient dhcpd dhcrelay dmesg downinterfaces fsck \
ifwatchd inetd ipfilter ipfs ipmon ipnat ipsec isdnd \
kdc ldconfig lkm1 lkm2 lkm3 local lpd mopd motd \
mountall mountcritlocal mountcritremote mountd moused \
mrouted mixerctl named ndbootd network newsyslog nfsd \
nfslocking ntpd ntpdate poffd postfix ppp pwcheck \
quota racoon rpcbind raidframe raidframeparity rarpd rbootd \
root route6d routed rtadvd rtsold rwho savecore \
screenblank sendmail securelevel sshd swap1 swap2 \
sysdb sysctl syslogd timed ttys virecover \
wdogctl wscons wsmoused \
xdm xfs ypbind yppasswdd ypserv
failed=$(( ${failed} + $? ))
# check for obsolete rc.d files
for f in NETWORK fsck.sh kerberos nfsiod servers systemfs \
daemon gated login portmap sunndd xntpd; do
fd=${DEST_DIR}/etc/rc.d/${f}
[ ! -e "${fd}" ] && continue
if [ "${op}" = "check" ]; then
msg "Remove obsolete ${fd}"
failed=1
elif ! rm ${fd}; then
msg "Can't remove obsolete ${fd}"
failed=1
else
msg "Removed obsolete ${fd}"
fi
done
# check for obsolete rc.conf(5) variables
set -- amd amd_master \
mountcritlocal critical_filesystems_beforenet \
mountcritremote critical_filesystems \
network ip6forwarding \
sysctl defcorename \
sysctl nfsiod_flags
while [ $# -gt 1 ]; do
if rcconf_is_set ${op} $1 $2; then
failed=1
fi
shift 2
done
return ${failed}
}
#
# ssh
#
additem ssh "ssh configuration update"
do_ssh()
{
[ -n "$1" ] || err 2 "USAGE: do_ssh fix|check"
op=$1
failed=0
_etcssh=${DEST_DIR}/etc/ssh
if ! check_dir ${op} ${_etcssh} 755; then
failed=1
fi
if [ ${failed} -eq 0 ]; then
for f in \
ssh_known_hosts ssh_known_hosts2 \
ssh_host_dsa_key ssh_host_dsa_key.pub \
ssh_host_rsa_key ssh_host_rsa_key.pub \
ssh_host_key ssh_host_key.pub \
; do
if ! move_file ${op} \
${DEST_DIR}/etc/${f} ${_etcssh}/${f} ;
then
failed=1
fi
done
for f in sshd.conf ssh.conf ; do
# /etc/ssh/ssh{,d}.conf -> ssh{,d}_config
#
if ! move_file ${op} \
${_etcssh}/${f} ${_etcssh}/${f%.conf}_config ;
then
failed=1
fi
# /etc/ssh{,d}.conf -> /etc/ssh/ssh{,d}_config
#
if ! move_file ${op} \
${DEST_DIR}/etc/${f} ${_etcssh}/${f%.conf}_config ;
then
failed=1
fi
done
fi
sshdconf=""
for f in \
${_etcssh}/sshd_config \
${_etcssh}/sshd.conf \
${DEST_DIR}/etc/sshd.conf ; do
if [ -f "${f}" ]; then
sshdconf=${f}
break;
fi
done
if [ -n "${sshdconf}" ]; then
awk '
$1 ~ /^[Hh][Oo][Ss][Tt][Kk][Ee][Yy]$/ &&
$2 ~ /^\/etc\/+ssh_host(_[dr]sa)?_key$/ {
sub(/\/etc\/+/, "/etc/ssh/");
}
{ print }
' < ${sshdconf} > ${SCRATCHDIR}/sshd_config
if ! cmp -s ${sshdconf} ${SCRATCHDIR}/sshd_config; then
diff ${sshdconf} ${SCRATCHDIR}/sshd_config > \
${SCRATCHDIR}/sshd_config.diffs
if [ "${op}" = "check" ]; then
msg "${sshdconf} needs the following changes:"
failed=1
elif ! cp -f ${SCRATCHDIR}/sshd_config ${sshdconf}; then
msg "${sshdconf} changes not applied:"
failed=1
else
msg "${sshdconf} changes applied:"
fi
while read _line; do
msg " ${_line}"
done < ${SCRATCHDIR}/sshd_config.diffs
fi
fi
dirsrc=${SRC_DIR}/crypto/dist/ssh
diretc=${SRC_DIR}/etc
modulidir=
if [ -f "${dirsrc}"/moduli ]; then
modulidir=$dirsrc
elif [ -f "${diretc}"/moduli ]; then
modulidir=$diretc
msg "Checking for moduli from ${modulidir} instead of ${dirsrc}"
else
msg "Can't find source directory for etc/moduli"
failed=1
fi
if [ -n "${modulidir}" ]; then
if ! compare_dir ${op} ${modulidir} \
${DEST_DIR}/etc 444 moduli; then
failed=1
fi
fi
if ! check_dir "${op}" "${DEST_DIR}/var/chroot/sshd" 755 ; then
failed=1
fi
if rcconf_is_set ${op} sshd sshd_conf_dir ; then
failed=1
fi
return ${failed}
}
#
# wscons
#
additem wscons "wscons configuration file update"
do_wscons()
{
[ -n "$1" ] || err 2 "USAGE: do_wscons fix|check"
op=$1
[ -f ${DEST_DIR}/etc/wscons.conf ] || return 0
failed=0
notfixed=""
if [ "${op}" = "fix" ]; then
notfixed=${NOT_FIXED}
fi
while read _type _arg1 _rest; do
if [ "${_type}" = "mux" -a "${_arg1}" = "1" ]; then
msg \
"Obsolete wscons.conf(5) entry \""${_type} ${_arg1}"\" found.${notfixed}"
failed=1
fi
done < ${DEST_DIR}/etc/wscons.conf
return ${failed}
}
#
# makedev
#
additem makedev "/dev/MAKEDEV being up to date"
do_makedev()
{
[ -n "$1" ] || err 2 "USAGE: do_makedev fix|check"
compare_dir $1 ${SRC_DIR}/etc/etc.${MACHINE} \
${DEST_DIR}/dev 555 MAKEDEV || return 1
}
#
# postfix
#
additem postfix "/etc/postfix/ being up to date"
do_postfix()
{
[ -n "$1" ] || err 2 "USAGE: do_postfix fix|check"
op=$1
failed=0
dirsrc=${SRC_DIR}/gnu/dist/postfix/conf
dirshare=${DEST_DIR}/usr/share/examples/postfix
if [ -d "${dirsrc}" ]; then
pfdir=$dirsrc
elif [ -d "${dirshare}" ]; then
pfdir=$dirshare
msg "Checking from ${pfdir} instead of ${dirsrc}"
else
msg "Can't find source directory"
return 1
fi
compare_dir ${op} ${pfdir} ${DEST_DIR}/etc/postfix 555 postfix-script
failed=$(( ${failed} + $? ))
compare_dir ${op} ${pfdir} \
${DEST_DIR}/etc/postfix 444 post-install postfix-files
failed=$(( ${failed} + $? ))
return ${failed}
}
#
# obsolete
#
# XXX Not yet -- problems with SYS_INCLUDES=symlinks
#additem obsolete "obsolete file sets"
do_obsolete()
{
[ -n "$1" ] || err 2 "USAGE: do_obsolete fix|check"
op=$1
setdir=${SRC_DIR}/distrib/sets
makeobs=${setdir}/makeobsolete
if [ ! -x "${makeobs}" ]; then
warn "Can't find program \"${makeobs}\""
return 1
fi
( cd ${setdir} && ./makeobsolete -s . -t ${SCRATCHDIR} )
failed=0
for obssrcfile in ${SCRATCHDIR}/*_obsolete; do
while read ofile; do
ofile=${DEST_DIR}${ofile#.}
cmd="rm"
ftype="file"
if [ -h "${ofile}" ]; then
ftype="link"
elif [ -d "${ofile}" ]; then
ftype="directory"
cmd="rmdir"
elif [ ! -e "${ofile}" ]; then
continue
fi
if [ "${op}" = "check" ]; then
msg "Remove obsolete ${ftype} ${ofile}"
failed=1
elif ! eval ${cmd} ${ofile}; then
msg "Can't remove obsolete ${ftype} ${ofile}"
failed=1
else
msg "Removed obsolete ${ftype} ${ofile}"
fi
done < ${obssrcfile}
done
return ${failed}
}
#
# end of items
# ------------
#
usage()
{
cat 1>&2 << _USAGE_
Usage: ${PROGNAME} [-s srcdir] [-d destdir] operation [item [...]]
Perform post-installation checks and/or fixes on a system's
configuration files. If no items are provided, all checks
or fixes are applied.
Options:
-s srcdir Source directory to compare from. [${SRC_DIR:-/}]
-d destdir Destination directory to check. [${DEST_DIR:-/}]
Operation may be one of:
help display this help
list list available items
check perform post-installation checks on items
fix apply fixes that 'check' determines need to be applied
usage display this usage
_USAGE_
exit 1
}
list()
{
echo "Supported items:"
echo " Item Description"
echo " ---- -----------"
for i in ${items}; do
eval desc="\${desc_${i}}"
printf " %-12s %s\n" "${i}" "${desc}"
done
}
main()
{
while getopts s:d: ch; do
case ${ch} in
s)
SRC_DIR=${OPTARG} ;;
d)
DEST_DIR=${OPTARG} ;;
*)
usage ;;
esac
done
shift $((${OPTIND} - 1))
[ $# -gt 0 ] || usage
[ -d "${SRC_DIR}" ] || err 1 "${SRC_DIR} is not a directory"
[ -d "${DEST_DIR}" ] || err 1 "${DEST_DIR} is not a directory"
# If directories are /, clear them, so various messages
# don't have leading "//". However, this requires
# the use of ${foo:-/} to display the variables.
#
[ "${SRC_DIR}" = "/" ] && SRC_DIR=""
[ "${DEST_DIR}" = "/" ] && DEST_DIR=""
op=$1
shift
case "${op}" in
usage|help)
usage
;;
list)
echo "Source directory: ${SRC_DIR:-/}"
echo "Target directory: ${DEST_DIR:-/}"
list
;;
check|fix)
todo="$@"
: ${todo:=${items}}
# ensure that all supplied items are valid
#
for i in ${todo}; do
eval desc=\"\${desc_${i}}\"
[ -n "${desc}" ] || err 1 "Unsupported ${op} '"${i}"'"
done
# perform each check/fix
#
echo "Source directory: ${SRC_DIR:-/}"
echo "Target directory: ${DEST_DIR:-/}"
items_passed=
items_failed=
for i in ${todo}; do
echo "${i} ${op}:"
( eval do_${i} ${op} )
if [ $? -eq 0 ]; then
items_passed="${items_passed} ${i}"
else
items_failed="${items_failed} ${i}"
fi
done
if [ "${op}" = "check" ]; then
plural="checks"
else
plural="fixes"
fi
echo "${PROGNAME} ${plural} passed:${items_passed}"
echo "${PROGNAME} ${plural} failed:${items_failed}"
;;
*)
warn "Unknown operation '"${op}"'"
usage
;;
esac
}
mkdtemp ()
{
# Make sure we don't loop forever if mkdir will always fail.
[ -d /tmp ] || err 1 /tmp is not a directory
[ -w /tmp ] || err 1 /tmp is not writeable
_base=/tmp/_postinstall.$$
_serial=0
while true; do
_dir=${_base}.${_serial}
mkdir -m 0700 ${_dir} && break
_serial=$((${_serial} + 1))
done
echo ${_dir}
}
# defaults
#
PROGNAME=${0##*/}
SRC_DIR="/usr/src"
DEST_DIR="/"
: ${MACHINE:=$( uname -m )} # assume native build if $MACHINE is not set
NOT_FIXED=" [NOT FIXED]"
SCRATCHDIR=$( mkdtemp ) || err 1 "Can't create scratch directory"
trap "/bin/rm -rf ${SCRATCHDIR} ; exit 0" 0 1 2 3 15 # EXIT HUP INT QUIT TERM
umask 022
main "$@"
exit 0