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#!/bin/bash
set -e
CONFDIR="${CONFDIR:-/etc/exim4}"
DONOTRUN='true'
UPEX4CT_outputfile="${CONFDIR}/exim4.conf.template"
usage() {
cat <<EOF
$0 - Generate exim4 configuration file template
Options:
-n|--nobackup - Overwrite old template, do not take backup.
-o|--output file - write output to file instead of ${UPEX4CT_outputfile}
-h|--help - This message.
-r|--run - Actually do something
EOF
}
## Parse commandline
TEMP=$(getopt -n update-exim4.conf.template \
-l nobackup,output:,help,run -- \
+no:hr "$@")
if test "$?" != 0; then
echo "Terminating..." >&2
exit 1
fi
eval set -- ${TEMP}
while test "$1" != "--"; do
case $1 in
-h|--help)
usage
exit 0
;;
-o|--output)
shift
UPEX4CT_outputfile="$1"
;;
-n|--nobackup)
NOBACKUP=1
;;
-r|--run)
DONOTRUN='false'
;;
esac
shift
done
shift
# No non-option arguments allowed.
if [ "$#" -ne 0 ]; then
echo "No non option arguments ($@) allowed" >&2
usage >&2
exit 1
fi
# run-parts emulation, stolen from Branden's /etc/X11/Xsession
# Addition: Use file.rul instead if file if it exists.
run_parts () {
# reset LC_COLLATE
unset LANG LC_COLLATE LC_ALL
if [ -z "$1" ]; then
errormessage "$0: internal run_parts called without an argument"
fi
if [ ! -d "$1" ]; then
errormessage "$0: internal run_parts called, but $1 does not exist or is not a directory."
fi
for F in $(ls $1 | grep -v /.svn); do
if expr "$F" : '[[:alnum:]_-]\+$' > /dev/null 2>&1; then
if [ -f "$1/$F" ] ; then
if [ -f "$1/${F}.rul" ] ; then
echo "$1/${F}.rul"
else
echo "$1/$F"
fi
fi
fi
done;
}
# also from Branden
errormessage () {
# pretty-print messages of arbitrary length (no trailing newline)
echo "$*" | fold -s -w ${COLUMNS:-80} >&2;
}
cat_parts() {
if [ -z "$1" ]; then
errormessage "$0: internal cat_parts called without an argument"
fi
if [ ! -d "$1" ]; then
errormessage "$0: internal cat_parts called, but $1 does not exist or is not a directory."
fi
for file in $(run_parts $1); do
echo "#####################################################"
echo "### $file"
echo "#####################################################"
cat $file
echo "#####################################################"
echo "### end $file"
echo "#####################################################"
done
}
if [ "$DONOTRUN" = "true" ]; then
errormessage "This program overwrites conffiles. Do not run unless you have consulted the manpage." >&2
echo "Terminating..." >&2
exit 1
fi
if [ -e "${UPEX4CT_outputfile}" ] && [ -z "$NOBACKUP" ]; then
if [ -e "${UPEX4CT_outputfile}.bak.$$" ]; then
echo >&2 "ERR: ${UPEX4CT_outputfile}.bak.$$ already exists, aborting"
exit 1
fi
fi
NEWTEMPLATE=$(mktemp)
if [ -f "${UPEX4CT_outputfile}" ] ; then
chmod --reference="${UPEX4CT_outputfile}" "$NEWTEMPLATE"
else
chmod 0644 "$NEWTEMPLATE"
fi
# generate .template. Ugly - better alternative?
SAVEWD="$(pwd)"
cd ${CONFDIR}/conf.d
for i in main acl router transport retry rewrite auth ; do
cat_parts $i
done > "$NEWTEMPLATE"
cd "$SAVEWD"
if [ -e "${UPEX4CT_outputfile}" ] && [ -z "$NOBACKUP" ] ; then
mv "${UPEX4CT_outputfile}" \
"${UPEX4CT_outputfile}.bak.$$"
fi
mv "$NEWTEMPLATE" "${UPEX4CT_outputfile}"
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