source: trunk/debathena/config/cupsys-config/debian/restart-cups.sh @ 25165

restart_cups()
{
        # Handle Debian package name change from cupsys to cups.
        [ -e /etc/init.d/cups ] && rcname=cups || rcname=cupsys
        # Restart cupsd if it is running
        if /etc/init.d/$rcname status; then
            if hash invoke-rc.d; then
                invoke="invoke-rc.d $rcname"
            else
                invoke="/etc/init.d/$rcname"
            fi
            # Flush remote.cache to deal with things like changing the
            # server we BrowsePoll against. But don't do so if
            # policy-rc.d is going to prevent us from restarting cupsd
            # (for instance, if reactivate is installed and running;
            # in that case, the next logout will flush remote.cache and restart
            # cupsd anyway).
            if $invoke stop; then
                rm -f /var/cache/cups/remote.cache
                if type restart_cups_extra >/dev/null 2>&1; then
                    restart_cups_extra 0
                fi
                $invoke start
            else
                ret="$?"
                if type restart_cups_extra >/dev/null 2>&1; then
                    restart_cups_extra "$ret"
                fi
            fi

            # Wait up to two minutes to pick up all the BrowsePoll server's queues.
            browse_host="$(sed -ne '/^BrowsePoll/ { s/^BrowsePoll //p; q }' /etc/cups/cupsd.conf)"
            if [ -n "$browse_host" ]; then
                browse_host="$(sed -ne '/^BrowsePoll/ { s/^BrowsePoll //p; q }' /usr/share/debathena-cupsys-config/cupsd-site.conf)"
            fi
            if [ -n "$browse_host" ]; then
                echo "Retrieving printer list, please wait..." >&2
                echo "(This may take up to 30 seconds)" >&2
                queue_count=$(lpstat -h "$browse_host" -a | awk '{print $1}' | sort -u | wc -l)

                if echo "$browse_host" | grep -q ':'; then
                    browse_port="${browse_host##*:}"
                    browse_host="${browse_host%:*}"
                else
                    browse_port=631
                fi

                # Execute the cups-polld in a subshell so that we can
                # set an EXIT trap
                (trap "start-stop-daemon --stop --oknodo --pidfile /var/run/debathena-cupsys-config-polld.pid" EXIT

                    start-stop-daemon --start \
                        --chuid lp \
                        --pidfile /var/run/debathena-cupsys-config-polld.pid \
                        --background \
                        --make-pidfile \
                        --startas /usr/lib/cups/daemon/cups-polld -- \
                        "$browse_host" "$browse_port" 1 631

                    timeout=0
                    while [ $(lpstat -a | wc -l) -lt $queue_count ] && [ $timeout -le 30 ]; do
                        sleep 1
                        timeout=$((timeout+1))
                    done)
            fi
        else
            if type restart_cups_extra >/dev/null 2>&1; then
                restart_cups_extra -1
            fi
        fi
}