| 1 | #!/bin/sh |
| 2 | [ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1 |
| 3 | |
| 4 | set_classless_routes() { |
| 5 | local max=128 |
| 6 | local type |
| 7 | while [ -n "$1" -a -n "$2" -a $max -gt 0 ]; do |
| 8 | [ ${1##*/} -eq 32 ] && type=host || type=net |
| 9 | echo "udhcpc: adding route for $type $1 via $2" |
| 10 | route add -$type "$1" gw "$2" dev "$interface" |
| 11 | max=$(($max-1)) |
| 12 | shift 2 |
| 13 | done |
| 14 | } |
| 15 | |
| 16 | setup_interface() { |
| 17 | echo "udhcpc: ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}" |
| 18 | ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+} |
| 19 | |
| 20 | [ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "255.255.255.255" ] && { |
| 21 | echo "udhcpc: setting default routers: $router" |
| 22 | |
| 23 | local valid_gw="" |
| 24 | for i in $router ; do |
| 25 | route add default gw $i dev $interface |
| 26 | valid_gw="${valid_gw:+$valid_gw|}$i" |
| 27 | done |
| 28 | |
| 29 | eval $(route -n | awk ' |
| 30 | /^0.0.0.0\W{9}('$valid_gw')\W/ {next} |
| 31 | /^0.0.0.0/ {print "route del -net "$1" gw "$2";"} |
| 32 | ') |
| 33 | } |
| 34 | |
| 35 | # CIDR STATIC ROUTES (rfc3442) |
| 36 | [ -n "$staticroutes" ] && set_classless_routes $staticroutes |
| 37 | [ -n "$msstaticroutes" ] && set_classless_routes $msstaticroutes |
| 38 | } |
| 39 | |
| 40 | |
| 41 | applied= |
| 42 | case "$1" in |
| 43 | deconfig) |
| 44 | ifconfig "$interface" 0.0.0.0 |
| 45 | ;; |
| 46 | renew) |
| 47 | setup_interface update |
| 48 | ;; |
| 49 | bound) |
| 50 | setup_interface ifup |
| 51 | ;; |
| 52 | esac |
| 53 | |
| 54 | # user rules |
| 55 | [ -f /etc/udhcpc.user ] && . /etc/udhcpc.user |
| 56 | |
| 57 | exit 0 |
| 58 | |
