blob: e8ba989c5fbc7a2c0f0cdabe07dbac45af67f80d [file] [log] [blame]
#!/bin/bash
# Copyright 1999-2007 Gentoo Foundation
# Distributed under the terms of the GNU General Public License v2
# $Id$
# Author Brandon Low <lostlogic@gentoo.org>
#
# Previous version (from which I've borrowed a few bits) by:
# Jochem Kossen <j.kossen@home.nl>
# Leo Lipelis <aeoo@gentoo.org>
# Karl Trygve Kalleberg <karltk@gentoo.org>
cd /
if type -P gsed >/dev/null ; then
sed() { gsed "$@"; }
fi
get_config() {
# the sed here does:
# - strip off comments
# - match lines that set item in question
# - delete the "item =" part
# - store the actual value into the hold space
# - on the last line, restore the hold space and print it
# If there's more than one of the same configuration item, then
# the store to the hold space clobbers previous value so the last
# setting takes precedence.
local item=$1
eval echo $(sed -n \
-e 's:[[:space:]]*#.*$::' \
-e "/^[[:space:]]*$item[[:space:]]*=/{s:[^=]*=[[:space:]]*\([\"']\{0,1\}\)\(.*\)\1:\2:;h}" \
-e '${g;p}' \
"${PORTAGE_CONFIGROOT}"etc/etc-update.conf)
}
diff_command() {
local cmd=${diff_command//%file1/$1}
${cmd//%file2/$2}
}
scan() {
echo "Scanning Configuration files..."
rm -rf ${TMP}/files > /dev/null 2>&1
mkdir ${TMP}/files || die "Failed mkdir command!" 1
count=0
input=0
local find_opts
local my_basename
for path in ${CONFIG_PROTECT} ; do
path="${ROOT}${path}"
find_opts="-iname ._cfg????_*"
if [ ! -d "${path}" ]; then
[ ! -f "${path}" ] && continue
my_basename="${path##*/}"
path="${path%/*}"
find_opts="-maxdepth 1 -iname ._cfg????_${my_basename}"
fi
ofile=""
# The below set -f turns off file name globbing in the ${find_opts} expansion.
for file in $(set -f; find ${path}/ ${find_opts} ! -iname '.*~' ! -iname '.*.bak' |
sed -e "s:\(^.*/\)\(\._cfg[0-9]*_\)\(.*$\):\1\2\3\%\2\%\3:" |
sort -t'%' -k3 -k2 | LANG=POSIX LC_ALL=POSIX cut -f1 -d'%'); do
rpath=$(echo "${file/\/\///}" | sed -e "s:/[^/]*$::")
rfile=$(echo "${file/\/\///}" | sed -e "s:^.*/::")
for mpath in ${CONFIG_PROTECT_MASK}; do
mpath="${ROOT}${mpath}"
mpath=$(echo "${mpath/\/\///}")
if [[ "${rpath}" == "${mpath}"* ]]; then
mv ${rpath}/${rfile} ${rpath}/${rfile:10}
break
fi
done
if [[ ! -f ${file} ]] ; then
echo "Skipping non-file ${file} ..."
continue
fi
if [[ "${ofile:10}" != "${rfile:10}" ]] ||
[[ ${opath} != ${rpath} ]]; then
MATCHES=0
if [[ "${EU_AUTOMERGE}" == "yes" ]]; then
if [ ! -e "${rpath}/${rfile}" ] || [ ! -e "${rpath}/${rfile:10}" ]; then
MATCHES=0
else
diff -Bbua ${rpath}/${rfile} ${rpath}/${rfile:10} | egrep '^[+-]' | egrep -v '^[+-][\t ]*#|^--- |^\+\+\+ ' | egrep -qv '^[-+][\t ]*$'
MATCHES=$?
fi
elif [[ -z $(diff -Nua ${rpath}/${rfile} ${rpath}/${rfile:10}|
grep "^[+-][^+-]"|grep -v '# .Header:.*') ]]; then
MATCHES=1
fi
if [[ "${MATCHES}" == "1" ]]; then
echo "Automerging trivial changes in: ${rpath}/${rfile:10}"
mv ${rpath}/${rfile} ${rpath}/${rfile:10}
continue
else
count=${count}+1
echo "${rpath}/${rfile:10}" > ${TMP}/files/${count}
echo "${rpath}/${rfile}" >> ${TMP}/files/${count}
ofile="${rfile}"
opath="${rpath}"
continue
fi
fi
if [[ -z $(diff -Nua ${rpath}/${rfile} ${rpath}/${ofile}|
grep "^[+-][^+-]"|grep -v '# .Header:.*') ]]; then
mv ${rpath}/${rfile} ${rpath}/${ofile}
continue
else
echo "${rpath}/${rfile}" >> ${TMP}/files/${count}
ofile="${rfile}"
opath="${rpath}"
fi
done
done
}
sel_file() {
local -i isfirst=0
until [[ -f ${TMP}/files/${input} ]] || \
[[ ${input} == -1 ]] || \
[[ ${input} == -3 ]]
do
local numfiles=$(ls ${TMP}/files|wc -l)
local numwidth=${#numfiles}
for file in $(ls ${TMP}/files|sort -n); do
if [[ ${isfirst} == 0 ]] ; then
isfirst=${file}
fi
numshow=$(printf "%${numwidth}i${PAR} " ${file})
numupdates=$(( $(wc -l <${TMP}/files/${file}) - 1 ))
echo -n "${numshow}"
if [[ ${mode} == 0 ]] ; then
echo "$(head -n1 ${TMP}/files/${file}) (${numupdates})"
else
head -n1 ${TMP}/files/${file}
fi
done > ${TMP}/menuitems
if [ "${OVERWRITE_ALL}" == "yes" ]; then
input=0
elif [ "${DELETE_ALL}" == "yes" ]; then
input=0
else
if [[ ${mode} == 0 ]] ; then
echo "The following is the list of files which need updating, each
configuration file is followed by a list of possible replacement files."
else
local my_title="Please select a file to update"
fi
if [[ ${mode} == 0 ]] ; then
cat ${TMP}/menuitems
echo "Please select a file to edit by entering the corresponding number."
echo " (don't use -3, -5, -7 or -9 if you're unsure what to do)"
echo " (-1 to exit) (-3 to auto merge all remaining files)"
echo " (-5 to auto-merge AND not use 'mv -i')"
echo " (-7 to discard all updates)"
echo -n " (-9 to discard all updates AND not use 'rm -i'): "
input=$(read_int)
else
dialog --title "${title}" --menu "${my_title}" \
0 0 0 $(echo -e "-1 Exit\n$(<${TMP}/menuitems)") \
2> ${TMP}/input || die "User termination!" 0
input=$(<${TMP}/input)
fi
if [[ ${input} == -9 ]]; then
read -p "Are you sure that you want to delete all updates (type YES):" reply
if [[ ${reply} != "YES" ]]; then
continue
else
input=-7
export rm_opts=""
fi
fi
if [[ ${input} == -7 ]]; then
input=0
export DELETE_ALL="yes"
fi
if [[ ${input} == -5 ]] ; then
input=-3
export mv_opts=" ${mv_opts} "
mv_opts="${mv_opts// -i / }"
fi
if [[ ${input} == -3 ]] ; then
input=0
export OVERWRITE_ALL="yes"
fi
fi # -3 automerge
if [[ -z ${input} ]] || [[ ${input} == 0 ]] ; then
input=${isfirst}
fi
done
}
user_special() {
if [ -r ${PORTAGE_CONFIGROOT}etc/etc-update.special ]; then
if [ -z "$1" ]; then
echo "ERROR: user_special() called without arguments"
return 1
fi
while read pat; do
echo ${1} | grep "${pat}" > /dev/null && return 0
done < ${PORTAGE_CONFIGROOT}etc/etc-update.special
fi
return 1
}
read_int() {
# Read an integer from stdin. Continously loops until a valid integer is
# read. This is a workaround for odd behavior of bash when an attempt is
# made to store a value such as "1y" into an integer-only variable.
local my_input
while true; do
read my_input
# failed integer conversions will break a loop unless they're enclosed
# in a subshell.
echo "${my_input}" | ( declare -i x; read x) && break
done
echo ${my_input}
}
do_file() {
echo
local -i my_input
local -i fcount=0
until (( $(wc -l < ${TMP}/files/${input}) < 2 )); do
my_input=0
if (( $(wc -l < ${TMP}/files/${input}) == 2 )); then
my_input=1
fi
until (( ${my_input} > 0 )) && (( ${my_input} < $(wc -l < ${TMP}/files/${input}) )); do
fcount=0
if [ "${OVERWRITE_ALL}" == "yes" ]; then
my_input=0
elif [ "${DELETE_ALL}" == "yes" ]; then
my_input=0
else
for line in $(<${TMP}/files/${input}); do
if (( ${fcount} > 0 )); then
echo -n "${fcount}${PAR} "
echo "${line}"
else
if [[ ${mode} == 0 ]] ; then
echo "Below are the new config files for ${line}:"
else
local my_title="Please select a file to process for ${line}"
fi
fi
fcount=${fcount}+1
done > ${TMP}/menuitems
if [[ ${mode} == 0 ]] ; then
cat ${TMP}/menuitems
echo -n "Please select a file to process (-1 to exit this file): "
my_input=$(read_int)
else
dialog --title "${title}" --menu "${my_title}" \
0 0 0 $(echo -e "$(<${TMP}/menuitems)\n${fcount} Exit") \
2> ${TMP}/input || die "User termination!" 0
my_input=$(<${TMP}/input)
fi
fi # OVERWRITE_ALL
if [[ ${my_input} == 0 ]] ; then
my_input=1
elif [[ ${my_input} == -1 ]] ; then
input=0
return
elif [[ ${my_input} == ${fcount} ]] ; then
break
fi
done
if [[ ${my_input} == ${fcount} ]] ; then
break
fi
fcount=${my_input}+1
file=$(sed -e "${fcount}p;d" ${TMP}/files/${input})
ofile=$(head -n1 ${TMP}/files/${input})
do_cfg "${file}" "${ofile}"
sed -e "${fcount}!p;d" ${TMP}/files/${input} > ${TMP}/files/sed
mv ${TMP}/files/sed ${TMP}/files/${input}
if [[ ${my_input} == -1 ]] ; then
break
fi
done
echo
rm ${TMP}/files/${input}
count=${count}-1
}
do_cfg() {
local file="${1}"
local ofile="${2}"
local -i my_input=0
until (( ${my_input} == -1 )) || [ ! -f ${file} ]; do
if [[ "${OVERWRITE_ALL}" == "yes" ]] && ! user_special "${ofile}"; then
my_input=1
elif [[ "${DELETE_ALL}" == "yes" ]] && ! user_special "${ofile}"; then
my_input=2
else
if [ "${using_editor}" == 0 ]; then
(
echo "Showing differences between ${ofile} and ${file}"
diff_command "${ofile}" "${file}"
) | ${pager}
else
echo "Beginning of differences between ${ofile} and ${file}"
diff_command "${ofile}" "${file}"
echo "End of differences between ${ofile} and ${file}"
fi
if [ -L "${file}" ]; then
echo
echo "-------------------------------------------------------------"
echo "NOTE: File is a symlink to another file. REPLACE recommended."
echo " The original file may simply have moved. Please review."
echo "-------------------------------------------------------------"
echo
fi
echo -n "File: ${file}
1) Replace original with update
2) Delete update, keeping original as is
3) Interactively merge original with update
4) Show differences again
Please select from the menu above (-1 to ignore this update): "
my_input=$(read_int)
fi
case ${my_input} in
1) echo "Replacing ${ofile} with ${file}"
mv ${mv_opts} ${file} ${ofile}
[ -n "${OVERWRITE_ALL}" ] && my_input=-1
continue
;;
2) echo "Deleting ${file}"
rm ${rm_opts} ${file}
[ -n "${DELETE_ALL}" ] && my_input=-1
continue
;;
3) do_merge "${file}" "${ofile}"
my_input=${?}
# [ ${my_input} == 255 ] && my_input=-1
continue
;;
4) continue
;;
*) continue
;;
esac
done
}
do_merge() {
# make sure we keep the merged file in the secure tempdir
# so we dont leak any information contained in said file
# (think of case where the file has 0600 perms; during the
# merging process, the temp file gets umask perms!)
local file="${1}"
local ofile="${2}"
local mfile="${TMP}/${2}.merged"
local -i my_input=0
echo "${file} ${ofile} ${mfile}"
if [[ -e ${mfile} ]] ; then
echo "A previous version of the merged file exists, cleaning..."
rm ${rm_opts} "${mfile}"
fi
# since mfile will be like $TMP/path/to/original-file.merged, we
# need to make sure the full /path/to/ exists ahead of time
mkdir -p "${mfile%/*}"
until (( ${my_input} == -1 )); do
echo "Merging ${file} and ${ofile}"
$(echo "${merge_command}" |
sed -e "s:%merged:${mfile}:g" \
-e "s:%orig:${ofile}:g" \
-e "s:%new:${file}:g")
until (( ${my_input} == -1 )); do
echo -n "1) Replace ${ofile} with merged file
2) Show differences between merged file and original
3) Remerge original with update
4) Edit merged file
5) Return to the previous menu
Please select from the menu above (-1 to exit, losing this merge): "
my_input=$(read_int)
case ${my_input} in
1) echo "Replacing ${ofile} with ${mfile}"
if [[ ${USERLAND:-GNU} == GNU ]]; then
chown --reference="${ofile}" "${mfile}"
chmod --reference="${ofile}" "${mfile}"
else
chown "$(stat -f %Su:%Sg "${ofile}")" "${mfile}"
chmod $(stat -f %Mp%Lp "${ofile}") "${mfile}"
fi
mv ${mv_opts} "${mfile}" "${ofile}"
rm ${rm_opts} "${file}"
return 255
;;
2) if [ "${using_editor}" == 0 ]; then
(
echo "Showing differences between ${ofile} and ${mfile}"
diff_command "${ofile}" "${mfile}"
) | ${pager}
else
echo "Beginning of differences between ${ofile} and ${mfile}"
diff_command "${ofile}" "${mfile}"
echo "End of differences between ${ofile} and ${mfile}"
fi
continue
;;
3) break
;;
4) ${EDITOR:-nano -w} "${mfile}"
continue
;;
5) rm ${rm_opts} "${mfile}"
return 0
;;
*) continue
;;
esac
done
done
rm ${rm_opts} "${mfile}"
return 255
}
die() {
trap "" TERM
trap "" KILL
if [ ${2} -eq 0 ]; then
echo "Exiting: ${1}"
scan > /dev/null
[ ${count} -gt 0 ] && echo "NOTE: ${count} updates remaining"
else
echo "ERROR: ${1}"
fi
rm -rf "${TMP}"
exit ${2}
}
usage() {
cat <<-EOF
etc-update: Handle configuration file updates
Usage: etc-update [options]
Options:
-d, --debug Enable shell debugging
-h, --help Show help and run away
-V, --version Show version and trundle away
EOF
[[ -n ${*:2} ]] && printf "\nError: %s\n" "${*:2}" 1>&2
exit ${1:-0}
}
#
# Run the script
#
SET_X=false
while [[ -n $1 ]] ; do
case $1 in
-d|--debug) SET_X=true;;
-h|--help) usage;;
-V|--version) echo '$Id$'; exit 0;;
*) usage 1 "Invalid option '$1'";;
esac
shift
done
${SET_X} && set -x
type portageq > /dev/null || exit $?
eval $(portageq envvar -v CONFIG_PROTECT \
CONFIG_PROTECT_MASK PORTAGE_CONFIGROOT PORTAGE_TMPDIR ROOT USERLAND)
export PORTAGE_TMPDIR
TMP="${PORTAGE_TMPDIR}/etc-update-$$"
trap die term
[ -w ${PORTAGE_CONFIGROOT}etc ] || die "Need write access to ${PORTAGE_CONFIGROOT}etc" 1
#echo $PORTAGE_TMPDIR
#echo $CONFIG_PROTECT
#echo $CONFIG_PROTECT_MASK
#export PORTAGE_TMPDIR=$(/usr/lib/portage/bin/portageq envvar PORTAGE_TMPDIR)
rm -rf "${TMP}" 2> /dev/null
mkdir "${TMP}" || die "failed to create temp dir" 1
# make sure we have a secure directory to work in
chmod 0700 "${TMP}" || die "failed to set perms on temp dir" 1
chown ${UID:-0}:${GID:-0} "${TMP}" || die "failed to set ownership on temp dir" 1
# I need the CONFIG_PROTECT value
#CONFIG_PROTECT=$(/usr/lib/portage/bin/portageq envvar CONFIG_PROTECT)
#CONFIG_PROTECT_MASK=$(/usr/lib/portage/bin/portageq envvar CONFIG_PROTECT_MASK)
# load etc-config's configuration
EU_AUTOMERGE=$(get_config eu_automerge)
rm_opts=$(get_config rm_opts)
mv_opts=$(get_config mv_opts)
cp_opts=$(get_config cp_opts)
pager=$(get_config pager)
diff_command=$(get_config diff_command)
using_editor=$(get_config using_editor)
merge_command=$(get_config merge_command)
declare -i mode=$(get_config mode)
[[ -z ${mode} ]] && mode=0
[[ -z ${pager} ]] && pager="cat"
if [ "${using_editor}" == 0 ]; then
# Sanity check to make sure diff exists and works
echo > "${TMP}"/.diff-test-1
echo > "${TMP}"/.diff-test-2
if ! diff_command "${TMP}"/.diff-test-1 "${TMP}"/.diff-test-2 ; then
die "'${diff_command}' does not seem to work, aborting" 1
fi
else
if ! type ${diff_command%% *} >/dev/null; then
die "'${diff_command}' does not seem to work, aborting" 1
fi
fi
if [[ ${mode} == "1" ]] ; then
if ! type dialog >/dev/null || ! dialog --help >/dev/null ; then
die "mode=1 and 'dialog' not found or not executable, aborting" 1
fi
fi
#echo "rm_opts: $rm_opts, mv_opts: $mv_opts, cp_opts: $cp_opts"
#echo "pager: $pager, diff_command: $diff_command, merge_command: $merge_command"
if (( ${mode} == 0 )); then
PAR=")"
else
PAR=""
fi
declare -i count=0
declare input=0
declare title="Gentoo's etc-update tool!"
scan
until (( ${input} == -1 )); do
if (( ${count} == 0 )); then
die "Nothing left to do; exiting. :)" 0
fi
sel_file
if (( ${input} != -1 )); then
do_file
fi
done
die "User termination!" 0