mirror of
https://github.com/GNS3/gns3-server
synced 2024-12-01 04:38:12 +00:00
139 lines
2.4 KiB
Bash
Executable File
139 lines
2.4 KiB
Bash
Executable File
#!/tmp/gns3/bin/sh
|
|
|
|
# script for udhcpc
|
|
# Copyright (c) 2008 Natanael Copa <natanael.copa@gmail.com>
|
|
|
|
UDHCPC="/gns3/etc/udhcpc"
|
|
UDHCPC_CONF="$UDHCPC/udhcpc.conf"
|
|
|
|
RESOLV_CONF="/etc/resolv.conf"
|
|
[ -f $UDHCPC_CONF ] && . $UDHCPC_CONF
|
|
|
|
export broadcast
|
|
export dns
|
|
export domain
|
|
export interface
|
|
export ip
|
|
export mask
|
|
export metric
|
|
export router
|
|
export subnet
|
|
|
|
#export PATH=/usr/bin:/bin:/usr/sbin:/sbin
|
|
|
|
run_scripts() {
|
|
local dir=$1
|
|
if [ -d $dir ]; then
|
|
for i in $dir/*; do
|
|
[ -f $i ] && $i
|
|
done
|
|
fi
|
|
}
|
|
|
|
deconfig() {
|
|
ip addr flush dev $interface
|
|
}
|
|
|
|
is_wifi() {
|
|
test -e /sys/class/net/$interface/phy80211
|
|
}
|
|
|
|
if_index() {
|
|
if [ -e /sys/class/net/$interface/ifindex ]; then
|
|
cat /sys/class/net/$interface/ifindex
|
|
else
|
|
ip link show dev $interface | head -n1 | cut -d: -f1
|
|
fi
|
|
}
|
|
|
|
calc_metric() {
|
|
local base=
|
|
if is_wifi; then
|
|
base=300
|
|
else
|
|
base=200
|
|
fi
|
|
echo $(( $base + $(if_index) ))
|
|
}
|
|
|
|
routes() {
|
|
[ -z "$router" ] && return
|
|
local gw= num=
|
|
while ip route del default via dev $interface 2>/dev/null; do
|
|
:
|
|
done
|
|
num=0
|
|
for gw in $router; do
|
|
ip route add 0.0.0.0/0 via $gw dev $interface \
|
|
metric $(( $num + ${IF_METRIC:-$(calc_metric)} ))
|
|
num=$(( $num + 1 ))
|
|
done
|
|
}
|
|
|
|
resolvconf() {
|
|
local i
|
|
[ -n "$IF_PEER_DNS" ] && [ "$IF_PEER_DNS" != "yes" ] && return
|
|
if [ "$RESOLV_CONF" = "no" ] || [ "$RESOLV_CONF" = "NO" ] \
|
|
|| [ -z "$RESOLV_CONF" ]; then
|
|
return
|
|
fi
|
|
echo -n > "$RESOLV_CONF"
|
|
[ -n "$domain" ] && echo "search $domain" >> "$RESOLV_CONF"
|
|
for i in $dns; do
|
|
echo "nameserver $i" >> "$RESOLV_CONF"
|
|
done
|
|
}
|
|
|
|
bound() {
|
|
ip addr add $ip/$mask ${broadcast:+broadcast $broadcast} dev $interface
|
|
ip link set dev $interface up
|
|
routes
|
|
resolvconf
|
|
}
|
|
|
|
renew() {
|
|
if ! ip addr show dev $interface | grep $ip/$mask; then
|
|
ip addr flush dev $interface
|
|
ip addr add $ip/$mask ${broadcast:+broadcast $broadcast} dev $interface
|
|
fi
|
|
|
|
local i
|
|
for i in $router; do
|
|
if ! ip route show | grep ^default | grep $i; then
|
|
routes
|
|
break
|
|
fi
|
|
done
|
|
|
|
if ! grep "^search $domain"; then
|
|
resolvconf
|
|
return
|
|
fi
|
|
for i in $dns; do
|
|
if ! grep "^nameserver $i"; then
|
|
resolvconf
|
|
return
|
|
fi
|
|
done
|
|
}
|
|
|
|
case "$1" in
|
|
deconfig|renew|bound)
|
|
run_scripts $UDHCPC/pre-$1
|
|
$1
|
|
run_scripts $UDHCPC/post-$1
|
|
;;
|
|
leasefail)
|
|
echo "udhcpc failed to get a DHCP lease" >&2
|
|
;;
|
|
nak)
|
|
echo "udhcpc received DHCP NAK" >&2
|
|
;;
|
|
*)
|
|
echo "Error: this script should be called from udhcpc" >&2
|
|
exit 1
|
|
;;
|
|
esac
|
|
exit 0
|
|
|