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#!/bin/sh
[ -z "$1" ] && echo "Error: should be run by udhcpc" && exit 1
. /etc/functions.sh
include /lib/network
RESOLV_CONF="/tmp/resolv.conf.auto"
hotplug_event() {
scan_interfaces
for ifc in $interfaces; do
config_get ifname $ifc ifname
[ "$ifname" = "$interface" ] || continue
config_get proto $ifc proto
[ "$proto" = "dhcp" ] || continue
[ ifup = "$1" ] && {
config_get userdns "$ifc" dns
[ -n "$userdns" ] && {
for i in $userdns; do
echo "custom dns $i"
echo "nameserver $i" >> "${RESOLV_CONF}.tmp"
done
dns="$userdns"
}
uci_set_state network "$ifc" ipaddr "$ip"
uci_set_state network "$ifc" netmask "${subnet:-255.255.255.0}"
uci_set_state network "$ifc" dnsdomain "$domain"
uci_set_state network "$ifc" dns "$dns"
uci_set_state network "$ifc" gateway "$router"
}
env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
done
}
case "$1" in
deconfig)
ifconfig $interface 0.0.0.0
hotplug_event ifdown
;;
renew|bound)
ifconfig $interface $ip \
netmask ${subnet:-255.255.255.0} \
broadcast ${broadcast:-+}
[ -n "$router" ] && {
for i in $router ; do
echo "adding router $i"
route add default gw $i dev $interface
valid="$valid|$i"
done
echo "deleting old routes"
$(route -n | awk '/^0.0.0.0\W{9}('$valid')\W/ {next} /^0.0.0.0/ {print "route del -net "$1" gw "$2";"}')
}
[ -n "$dns" ] && \
echo -n > "${RESOLV_CONF}.tmp"
[ -n "$dns" ] && {
[ -s "${RESOLV_CONF}.tmp" ] || {
for i in $dns ; do
echo "adding dns $i"
echo "nameserver $i" >> "${RESOLV_CONF}.tmp"
done
}
${domain:+echo search $domain} >> "${RESOLV_CONF}.tmp"
mv "${RESOLV_CONF}.tmp" "$RESOLV_CONF"
}
if [ "$1" = "renew" ]; then
hotplug_event update
else
hotplug_event ifup
fi
# user rules
[ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
;;
esac
exit 0
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