debian/debconf/update-exim4.conf.template

   1 #!/bin/bash
   2
   3 set -e
   4
   5 CONFDIR="${CONFDIR:-/etc/exim4}"
   6 DONOTRUN='true'
   7
   8 UPEX4CT_outputfile="${CONFDIR}/exim4.conf.template"
   9
  10 usage() {
  11 cat <<EOF
  12 $0 - Generate exim4 configuration file template
  13        Options:
  14        -n|--nobackup - Overwrite old template, do not take backup.
  15        -o|--output file - write output to file instead of ${UPEX4CT_outputfile}
  16        -h|--help - This message.
  17        -r|--run - Actually do something
  18 EOF
  19 }
  20
  21 ## Parse commandline
  22 TEMP=$(getopt -n update-exim4.conf.template \
  23         -l nobackup,output:,help,run -- \
  24         +no:hr "$@")
  25
  26 if test "$?" != 0; then
  27         echo "Terminating..." >&2
  28         exit 1
  29 fi
  30
  31 eval set -- ${TEMP}
  32 while test "$1" != "--"; do
  33         case $1 in
  34                 -h|--help)
  35                         usage
  36                         exit 0
  37                 ;;
  38                 -o|--output)
  39                         shift
  40                         UPEX4CT_outputfile="$1"
  41                 ;;
  42                 -n|--nobackup)
  43                         NOBACKUP=1
  44                 ;;
  45                 -r|--run)
  46                         DONOTRUN='false'
  47                 ;;
  48         esac
  49         shift
  50 done
  51 shift
  52
  53 # No non-option arguments allowed.
  54 if [ "$#" -ne 0 ]; then
  55         echo "No non option arguments ($@) allowed" >&2
  56         usage >&2
  57         exit 1
  58 fi
  59
  60 # run-parts emulation, stolen from Branden's /etc/X11/Xsession
  61 # Addition: Use file.rul instead if file if it exists.
  62 run_parts () {
  63         # reset LC_COLLATE
  64         unset LANG LC_COLLATE LC_ALL
  65
  66         if [ -z "$1" ]; then
  67                 errormessage "$0: internal run_parts called without an argument"
  68         fi
  69         if [ ! -d "$1" ]; then
  70                 errormessage "$0: internal run_parts called, but $1 does not exist or is not a directory."
  71         fi
  72         for F in $(ls $1 | grep -v /.svn); do
  73                 if expr "$F" : '[[:alnum:]_-]\+$' > /dev/null 2>&1; then
  74                         if [ -f "$1/$F" ] ; then
  75                                 if [ -f "$1/${F}.rul" ] ; then
  76                                         echo "$1/${F}.rul"
  77                                 else
  78                                         echo "$1/$F"
  79                                 fi
  80                         fi
  81                 fi
  82         done;
  83 }
  84 # also from Branden
  85 errormessage () {
  86         # pretty-print messages of arbitrary length (no trailing newline)
  87         echo "$*" | fold -s -w ${COLUMNS:-80} >&2;
  88 }
  89
  90 cat_parts() {
  91        if [ -z "$1" ]; then
  92                errormessage "$0: internal cat_parts called without an argument"
  93        fi
  94        if [ ! -d "$1" ]; then
  95                errormessage "$0: internal cat_parts called, but $1 does not exist or is not a directory."
  96        fi
  97        for file in $(run_parts $1); do
  98                echo "#####################################################"
  99                echo "### $file"
 100                echo "#####################################################"
 101                cat $file
 102                echo "#####################################################"
 103                echo "### end $file"
 104                echo "#####################################################"
 105        done
 106 }
 107
 108 if [ "$DONOTRUN" = "true" ]; then
 109         errormessage "This program overwrites conffiles. Do not run unless you have consulted the manpage." >&2
 110         echo "Terminating..." >&2
 111         exit 1
 112 fi
 113
 114
 115 if [ -e "${UPEX4CT_outputfile}" ] && [ -z "$NOBACKUP" ]; then
 116   if [ -e "${UPEX4CT_outputfile}.bak.$$" ]; then
 117     echo >&2 "ERR: ${UPEX4CT_outputfile}.bak.$$ already exists, aborting"
 118     exit 1
 119   fi
 120 fi
 121
 122 NEWTEMPLATE=$(tempfile -m644 -p ex4)
 123 if [ -f "${UPEX4CT_outputfile}" ] ; then
 124         chmod --reference="${UPEX4CT_outputfile}" "$NEWTEMPLATE"
 125 fi
 126
 127 # generate .template. Ugly - better alternative?
 128 SAVEWD="$(pwd)"
 129 cd ${CONFDIR}/conf.d
 130 for i in main acl router transport retry rewrite auth ; do
 131   cat_parts $i
 132 done > "$NEWTEMPLATE"
 133 cd "$SAVEWD"
 134
 135 if [ -e "${UPEX4CT_outputfile}" ] && [ -z "$NOBACKUP" ] ; then
 136         mv "${UPEX4CT_outputfile}" \
 137                 "${UPEX4CT_outputfile}.bak.$$"
 138 fi
 139 mv "$NEWTEMPLATE" "${UPEX4CT_outputfile}"