Home | History | Annotate | Download | only in avahi-autoipd 
      1 #!/bin/sh
      2 
      3 # This file is part of avahi.
      4 #
      5 # avahi is free software; you can redistribute it and/or modify it
      6 # under the terms of the GNU Lesser General Public License as
      7 # published by the Free Software Foundation; either version 2 of the
      8 # License, or (at your option) any later version.
      9 #
     10 # avahi is distributed in the hope that it will be useful, but WITHOUT
     11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
     12 # or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
     13 # License for more details.
     14 #
     15 # You should have received a copy of the GNU Lesser General Public
     16 # License along with avahi; if not, write to the Free Software
     17 # Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
     18 # USA.
     19 
     20 set -e
     21 
     22 # Command line arguments:
     23 #   $1 event that happened:
     24 #          BIND:     Successfully claimed address
     25 #          CONFLICT: An IP address conflict happened
     26 #          UNBIND:   The IP address is no longer needed
     27 #          STOP:     The daemon is terminating
     28 #   $2 interface name
     29 #   $3 IP adddress
     30 
     31 PATH="$PATH:/usr/bin:/usr/sbin:/bin:/sbin"
     32 
     33 # Use a different metric for each interface, so that we can set
     34 # identical routes to multiple interfaces.
     35 
     36 METRIC=$((1000 + `cat "/sys/class/net/$2/ifindex" 2>/dev/null || echo 0`))
     37 
     38 if [ -x /bin/ip -o -x /sbin/ip ] ; then
     39 
     40     # We have the Linux ip tool from the iproute package
     41 
     42     case "$1" in
     43         BIND)
     44             ip addr add "$3"/16 brd 169.254.255.255 label "$2:avahi" scope link dev "$2"
     45             ip route add default dev "$2" metric "$METRIC" scope link ||:
     46             ;;
     47 
     48         CONFLICT|UNBIND|STOP)
     49             ip route del default dev "$2" metric "$METRIC" scope link ||:
     50             ip addr del "$3"/16 brd 169.254.255.255 label "$2:avahi" scope link dev "$2"
     51             ;;
     52 
     53         *)
     54             echo "Unknown event $1" >&2
     55             exit 1
     56             ;;
     57     esac
     58 
     59 elif [ -x /bin/ifconfig -o -x /sbin/ifconfig ] ; then
     60 
     61     # We have the old ifconfig tool
     62 
     63     case "$1" in
     64         BIND)
     65             ifconfig "$2:avahi" inet "$3" netmask 255.255.0.0 broadcast 169.254.255.255 up
     66             route add default dev "$2:avahi" metric "$METRIC" ||:
     67             ;;
     68 
     69         CONFLICT|STOP|UNBIND)
     70             route del default dev "$2:avahi" metric "$METRIC" ||:
     71             ifconfig "$2:avahi" down
     72             ;;
     73 
     74         *)
     75             echo "Unknown event $1" >&2
     76             exit 1
     77             ;;
     78     esac
     79 
     80 else
     81 
     82     echo "No network configuration tool found." >&2
     83     exit 1
     84 
     85 fi
     86 
     87 exit 0
     88