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#!/bin/sh
# udhcp setup script
# Ideally this should be the defalt udhcpc script, but I doubt upstream
# will accept it.
PATH=/bin:/usr/bin:/sbin:/usr/sbin
update_dns()
{
[[ -n "${PEER_DNS}" ]] && [[ "${PEER_DNS}" != "yes" ]] && return
[[ -z "${domain}" ]] && [[ -z "${dns}" ]] && return
conf="# Generated by udhcpc for ${interface}\n"
[[ -n "${domain}" ]] && conf="${conf}search ${domain}\n"
for i in ${dns} ; do
conf="${conf}nameserver ${i}\n"
done
if [[ -x /sbin/resolvconf ]] ; then
echo -e "${conf}" | resolvconf -a ${interface}
else
echo -e "${conf}" > /etc/resolv.conf
chmod 644 /etc/resolv.conf
fi
}
update_ntp() {
[[ -n "${PEER_NTP}" ]] && [[ "${PEER_NTP}" != "yes" ]] && return
[[ -z "${ntpsrv}" ]] && return
conf="# Generated by udhcpc for interface ${interface}\n"
conf="${conf}restrict default noquery notrust nomodify\n"
conf="${conf}restrict 127.0.0.1\n"
for i in ${ntpsrv} ; do
conf="${conf}restrict ${i} nomodify notrap noquery\n"
conf="${conf}server ${i}\n"
done
conf="${conf}driftfile /var/lib/ntp/ntp.drift\n"
conf="${conf}logfile /var/log/ntp.log\n"
echo -e "${conf}" > /etc/ntp.conf
chmod 644 /etc/ntp.conf
}
update_hostname() {
[[ -n "${PEER_HOSTNAME}" ]] && [[ "${PEER_HOSTNAME}" != "yes" ]] && return
[[ -z "${hostname}" ]] && return
myhost="$(hostname)"
[[ -z ${myhost} ]] || [[ ${myhost} == "(none)" ]] && hostname "${hostname}"
}
update_interface()
{
[[ -n "${broadcast}" ]] && broadcast="broadcast ${broadcast}"
[[ -n "${subnet}" ]] && netmask="netmask ${subnet}"
[[ -n "${mtu}" ]] && mtu="mtu ${mtu}"
ifconfig "${interface}" ${ip} ${broadcast} ${netmask} ${mtu}
}
update_routes()
{
while route del default dev "${interface}" 2>/dev/null ; do
:
done
[[ -n "${PEER_ROUTERS}" ]] && [[ "${PEER_ROUTERS}" != "yes" ]] && return
if [[ -n "${router}" ]] ; then
metric=
[[ -n "${IF_METRIC}" ]] && metric="metric ${IF_METRIC}"
for i in ${router} ; do
route add default gw "${i}" ${metric} dev "${interface}"
done
fi
}
deconfig()
{
ifconfig "${interface}" 0.0.0.0
[[ -x /sbin/resolvconf ]] && resolvconf -d "${interface}"
}
case "$1" in
bound|renew)
update_hostname
update_interface
update_routes
update_dns
update_ntp
;;
deconfig|leasefail)
deconfig
;;
nak)
echo "nak: ${message}"
;;
*)
echo "unknown option $1" >&2
echo "Usage: $0 {bound|deconfig|leasefail|nak|renew}" >&2
exit 1
;;
esac
exit 0
# vim: ts=4 :
|
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