source: debian/postinst @ 3923003

#!/bin/sh -e

. /usr/share/debconf/confmodule

db_get bitlbee/serveport
PORT="$RET"

CONFDIR=/var/lib/bitlbee/

update-rc.d bitlbee defaults > /dev/null 2>&1

## Load default option. Don't want to put this in debconf (yet?)
BITLBEE_OPTS=-F
BITLBEE_DISABLED=0
BITLBEE_UPGRADE_DONT_RESTART=0
[ -r /etc/default/bitlbee ] && . /etc/default/bitlbee

if [ "$BITLBEE_DISABLED" = "0" ] && type update-inetd > /dev/null 2> /dev/null &&
   ( expr "$2" : '0\..*' > /dev/null || expr "$2" : '1\.0\..*' > /dev/null ); then
        ## Make sure the inetd entry is gone (can still be there from a
        ## previous version.
        update-inetd --remove '.*/usr/sbin/bitlbee'
        if grep -q /usr/sbin/bitlbee /etc/inetd.conf 2> /dev/null; then
                # Thanks for breaking update-inetd! (bugs.debian.org/311111)
                # I hope that it works at least with xinetd, because this
                # emergency hack doesn't:
                perl -pi -e 's:^[^#].*/usr/sbin/bitlbee$:## Now using daemon mode\: # $&:' /etc/inetd.conf
                killall -HUP inetd || true
        fi
fi

cat<<EOF>/etc/default/bitlbee
## /etc/default/bitlbee: Auto-generated/updated script.
##
## If running in (fork)daemon mode, listen on this TCP port.
BITLBEE_PORT="$PORT"

## Use single-process or forking daemon mode? Can't be changed from debconf,
## but maintainer scripts will save your changes here.
BITLBEE_OPTS="$BITLBEE_OPTS"

## In case you want to stick with inetd mode (or if you just want to disable
## the init scripts for some other reason), you can disable the init script
## here. (Just set it to 1)
BITLBEE_DISABLED=$BITLBEE_DISABLED

## As a server operator, you can use the RESTART command to restart only the
## master process while keeping all the child processes and their IPC
## connections. By enabling this, the maintainer scripts won't restart
## BitlBee during upgrades so you can restart the master process by hand.
BITLBEE_UPGRADE_DONT_RESTART=$BITLBEE_UPGRADE_DONT_RESTART
EOF

## Bye-bye DebConf, we don't need you anymore.
db_stop

## Restore the helpfile in case we weren't upgrading but just reconfiguring:
if [ -e /usr/share/bitlbee/help.upgrading ]; then
        if [ -e /usr/share/bitlbee/help.txt ]; then
                rm -f /usr/share/bitlbee/help.upgrading
        else
                mv /usr/share/bitlbee/help.upgrading /usr/share/bitlbee/help.txt
        fi
fi

if [ -n "$2" -a "$BITLBEE_UPGRADE_DONT_RESTART" != "1" ]; then
        if which invoke-rc.d >/dev/null 2>&1; then
                invoke-rc.d bitlbee restart
        else
                /etc/init.d/bitlbee restart
        fi
fi

## If we're upgrading, we'll probably skip this next part
if [ -d $CONFDIR ] && chown -R bitlbee: $CONFDIR; then
        echo 'BitlBee (probably) already installed, skipping user/configdir installation'
        exit 0
fi

adduser --system --group --disabled-login --disabled-password --home /var/lib/bitlbee/ bitlbee
chmod 700 /var/lib/bitlbee/

## Can't do this in packaging phase: Don't know the UID yet. Access to
## the file should be limited, now that it stores passwords. Added
## --group later for a little more security, but have to see if I can
## apply this change to existing installations on upgrades. Will think
## about that later.
if getent group bitlbee > /dev/null; then
        chmod 640 /etc/bitlbee/bitlbee.conf
        chown root:bitlbee /etc/bitlbee/bitlbee.conf
else
        chmod 600 /etc/bitlbee/bitlbee.conf
        chown bitlbee /etc/bitlbee/bitlbee.conf
fi

if [ -z "$2" ]; then
        if which invoke-rc.d >/dev/null 2>&1; then
                invoke-rc.d bitlbee start
        else
                /etc/init.d/bitlbee start
        fi
fi