#!/bin/sh -e

# source debconf library
. /usr/share/debconf/confmodule

CONFIGFILE=/etc/masqmail/masqmail.conf
WORKTMP=$CONFIGFILE.tmp
DEBCONFTMP=$CONFIGFILE.debconf

DEFAULTSFILE=/etc/default/masqmail
DEBDEFTMP=$DEFAULTSFILE.debconf

create_db_conf (){
    rm -f $WORKTMP $DEBCONFTMP

    cat >> $DEBCONFTMP << EOF
### BEGIN DEBCONF SECTION
# Do not edit within this region if you want your changes to be preserved by
# debconf.  Instead, make changes after the "### END DEBCONF SECTION" line.
EOF

    db_get masqmail/host_name || true
    echo "host_name=\"$RET\"" >> $DEBCONFTMP
    db_get masqmail/local_hosts || true
    echo "local_hosts=\"$RET\"" >> $DEBCONFTMP
    db_get masqmail/local_nets || true
    echo "local_nets=\"$RET\"" >> $DEBCONFTMP
    db_get masqmail/listen_addresses || true
    echo "listen_addresses=\"$RET\"" >> $DEBCONFTMP

    echo "spool_dir=\"/var/spool/masqmail\"" >> $DEBCONFTMP
    echo "mail_dir=\"/var/mail\"" >> $DEBCONFTMP
    echo "log_dir=\"/var/log/masqmail\"" >> $DEBCONFTMP
    echo "do_queue=false" >> $DEBCONFTMP

    db_get masqmail/use_syslog || true
    echo "use_syslog=$RET" >> $DEBCONFTMP

    db_get masqmail/online_detect || true
    echo "online_detect=$RET" >> $DEBCONFTMP
    if [ "$RET" = "file" ] ; then
	db_get masqmail/online_file || true
	echo "online_file=\"$RET\"" >> $DEBCONFTMP
    else
	db_get masqmail/online_pipe || true
	echo "online_pipe=\"$RET\"" >> $DEBCONFTMP
    fi

    db_get masqmail/mbox_default || true
    echo "mbox_default=$RET" >> $DEBCONFTMP
    db_get masqmail/mda || true
    echo "mda=\"$RET\"" >> $DEBCONFTMP

    echo "alias_file=/etc/aliases" >> $DEBCONFTMP
    db_get masqmail/alias_local_caseless || true
    echo "alias_local_caseless=\"$RET\"" >> $DEBCONFTMP

    cat >> $DEBCONFTMP << EOF
### END DEBCONF SECTION
EOF
}

write_db_conf (){

  if [ -e $CONFIGFILE ]; then
    # does the file have debconf markers in it?
    if egrep -q '^### BEGIN DEBCONF SECTION' $CONFIGFILE && \
       egrep -q '^### END DEBCONF SECTION' $CONFIGFILE; then
      # see if the beginning of the file was left alone; sed cannot backtrack in
      # an address range
      if ! head -1 $CONFIGFILE | egrep -q '^### BEGIN DEBCONF SECTION'; then
        # sick, sick, sick
        LINES=$(sed -n '1,/^### BEGIN DEBCONF SECTION/p' < $CONFIGFILE | wc -l)
        sed -n 1,$(( $LINES - 1 ))p < $CONFIGFILE > $WORKTMP
      fi
      cat $DEBCONFTMP >> $WORKTMP
      sed -n '/^### END DEBCONF SECTION/,$p' < $CONFIGFILE | tail +2 >> $WORKTMP
    else
      echo "Existing $CONFIGFILE has missing or half-open debconf region;" >&2;
      echo "not writing masqmail configuration file." >&2;
      exit 1
    fi
  else
    cat >> $DEBCONFTMP << EOF
#
# include the locations of your route and get configurations here.
# Examples:
# online_routes.default = "/etc/masqmail/default.route"
# online_gets.default = "/etc/masqmail/default.get"
# You can have more of those, with '.default' replaced with other
# names. See man 8 masqmail.conf.
#
EOF
    cp $DEBCONFTMP $WORKTMP
  fi

  mv $WORKTMP $CONFIGFILE

#  rm -f $WORKTMP $DEBCONFTMP
}

create_db_defaults () {
    cat >> $DEBDEFTMP << EOF
#
# better use 'dpkg-reconfigure masqmail'
# instead of editing by hand
#
EOF

    db_get masqmail/init_smtp_daemon || true
    echo "INIT_SMTP_DAEMON=\"$RET\"" >> $DEBDEFTMP
    db_get masqmail/init_queue_daemon || true
    echo "INIT_QUEUE_DAEMON=\"$RET\"" >> $DEBDEFTMP
    db_get masqmail/init_fetch_daemon || true
    echo "INIT_FETCH_DAEMON=\"$RET\"" >> $DEBDEFTMP

    echo "#" >> $DEBDEFTMP

    db_get masqmail/queue_daemon_ival || true
    echo "QUEUE_DAEMON_IVAL=\"$RET\"" >> $DEBDEFTMP
    db_get masqmail/fetch_daemon_ival || true
    echo "FETCH_DAEMON_IVAL=\"$RET\"" >> $DEBDEFTMP

    echo "#" >> $DEBDEFTMP

    db_get masqmail/ipup_runqueue || true
    echo "IPUP_RUNQUEUE=\"$RET\"" >> $DEBDEFTMP
    db_get masqmail/ipup_fetch || true
    echo "IPUP_FETCH=\"$RET\"" >> $DEBDEFTMP

    db_get masqmail/ifup_ifaces || true
    echo "IFUP_IFACES=\"$RET\"" >> $DEBDEFTMP
}
   
write_db_defaults () {
    mv $DEBDEFTMP $DEFAULTSFILE
}

case "$1" in
    configure)

        # Create spool and log directories
        install -d -omail -gmail /var/log/masqmail
        install -d -omail -gmail /var/spool/masqmail
        install -d -omail -gmail /var/spool/masqmail/input
        install -d -omail -gmail /var/spool/masqmail/lock
        install -d -omail -gmail /var/spool/masqmail/popuidl

	db_get masqmail/manage_config_with_debconf || true
	if [ "$RET" = "true" ]; then
	    db_get masqmail/move_existing_nondebconf_config || true
	    if [ "$RET" = "true" ]; then
		create_db_conf
		write_db_conf
	    fi
	    create_db_defaults
	    write_db_defaults
	fi

        ;;

    abort-upgrade|abort-remove|abort-deconfigure)
        ;;
esac

#DEBHELPER#