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base-files: replace udhcpc script with an improved version

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SVN-Revision: 15635
This commit is contained in:
Jo-Philipp Wich 2009-05-06 12:51:12 +00:00
parent 4cdb76c219
commit ca609a2431
1 changed files with 108 additions and 66 deletions
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160
package/base-files/files/usr/share/udhcpc/default.script
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@ -1,85 +1,127 @@
#!/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
change_state () {
uci_revert_state "$1" "$2" "$3" "$4"
uci_set_state "$1" "$2" "$3" "$4"
}
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:-+}
uci_get() {
uci -P /dev/null get "$1" 2>/dev/null
}
[ -n "$router" ] && {
for i in $router ; do
echo "adding router $i"
route add default gw $i dev $interface
valid="$valid|$i"
setup_interface () {
local old_ip
local old_broadcast
local old_subnet
local old_router
local old_dns
local user_dns
local user_router
done
config_get old_ip "$ifc" ipaddr
config_get old_broadcast "$ifc" broadcast
config_get old_subnet "$ifc" netmask
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 "$2";"}')
[ "$ip" != "$old_ip" ] \
|| [ "${broadcast:-+}" != "$old_broadcast" ] \
|| [ "${subnet:-255.255.255.0}" != "$old_subnet" ] && {
echo "udhcpc: ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}"
ifconfig $interface $ip netmask ${subnet:-255.255.255.0} broadcast ${broadcast:-+}
change_state network "$ifc" ipaddr "$ip"
change_state network "$ifc" broadcast "${broadcast:-+}"
change_state network "$ifc" netmask "${subnet:-255.255.255.0}"
}
[ -n "$dns" ] && \
echo -n > "${RESOLV_CONF}.tmp"
[ -n "$dns" ] && {
[ -s "${RESOLV_CONF}.tmp" ] || {
# Default Route
change_state network "$ifc" lease_gateway "$router"
config_get old_router "$ifc" gateway
user_router=$(uci_get "network.$ifc.gateway")
[ -n "$user_router" ] && router="$user_router"
[ -n "$router" ] && [ "$router" != "0.0.0.0" ] && [ "$router" != "$old_router" ] && {
echo "udhcpc: setting default routers: $router"
local valid_gw=""
for i in $router ; do
route add default gw $i dev $interface
valid_gw="${valid_gw:+$valid_gw|}$i"
done
eval $(route -n | awk '
/^0.0.0.0\W{9}('$valid_gw')\W/ {next}
/^0.0.0.0/ {print "route del -net "$1" gw "$2";"}
')
change_state network "$ifc" gateway "$router"
}
# DNS
config_get old_dns "$ifc" dns
user_dns=$(uci_get "network.$ifc.dns")
[ -n "$user_dns" ] && dns="$user_dns"
[ -n "$dns" ] && [ "$dns" != "$old_dns" ] && {
echo "udhcpc: setting dns servers: $dns"
echo -n > "${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"
change_state network "$ifc" dnsdomain "$domain"
change_state network "$ifc" dns "$dns"
}
if [ "$1" = "renew" ]; then
hotplug_event update
else
hotplug_event ifup
fi
# UCI State
change_state network "$ifc" lease_server "$serverid"
change_state network "$ifc" lease_acquired "$(date '+%s')"
change_state network "$ifc" lease_lifetime "$lease"
[ -n "$ntpsrv" ] && change_state network "$ifc" lease_ntpsrv "$ntpsrv"
[ -n "$timesvr" ] && change_state network "$ifc" lease_timesrv "$timesvr"
[ -n "$hostname" ] && change_state network "$ifc" lease_hostname "$hostname"
[ -n "$timezone" ] && change_state network "$ifc" lease_timezone "$timezone"
# Hotplug
env -i ACTION="$1" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
}
scan_interfaces
for ifc in $interfaces; do
config_get ifname "$ifc" ifname
[ "$ifname" = "$interface" ] || continue
config_get proto "$ifc" proto
[ "$proto" = "dhcp" ] || continue
case "$1" in
deconfig)
ifconfig "$interface" 0.0.0.0
env -i ACTION="ifdown" INTERFACE="$ifc" DEVICE="$ifname" PROTO=dhcp /sbin/hotplug-call iface
uci_revert_state network "$ifc"
;;
renew)
setup_interface update
;;
bound)
setup_interface ifup
;;
esac
# user rules
[ -f /etc/udhcpc.user ] && . /etc/udhcpc.user
;;
esac
done
exit 0