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#!/bin/sh
# some users provide a shell fragment for the hostname property.
[ -n "$IF_DHCP_HOSTNAME" ] && IF_DHCP_HOSTNAME=$(eval echo $IF_DHCP_HOSTNAME)
determine_implementation() {
[ -n "$IF_DHCP_PROGRAM" ] && echo "$IF_DHCP_PROGRAM" && return
[ -x /sbin/dhcpcd ] && echo "dhcpcd" && return
[ -x /usr/sbin/dhclient ] && echo "dhclient" && return
[ -x /sbin/udhcpc ] && echo "udhcpc" && return
echo "could not find a supported DHCP implementation"
exit 1
}
start() {
case "$1" in
dhcpcd)
[ -n "$IF_DHCP_HOSTNAME" ] && optargs="$optargs -h $IF_DHCP_HOSTNAME"
[ -n "$IF_DHCP_VENDOR" ] && optargs="$optargs -i $IF_DHCP_VENDOR"
[ -n "$IF_DHCP_CLIENT_ID" ] && optargs="$optargs -i $IF_DHCP_CLIENT_ID"
[ -n "$IF_DHCP_LEASETIME" ] && optargs="$optargs -l $IF_DHCP_LEASETIME"
${MOCK} /sbin/dhcpcd $optargs $IFACE
;;
dhclient)
# Specific config file given?
if [ -n "$IF_DHCP_CONFIG" ]; then
optargs="$optargs -cf $IF_DHCP_CONFIG"
fi
${MOCK} /usr/sbin/dhclient -pf /var/run/dhclient.$IFACE.pid $optargs $IFACE
;;
udhcpc)
optargs=$(eval echo $IF_UDHCPC_OPTS)
[ -n "$IF_DHCP_HOSTNAME" ] && optargs="$optargs -x hostname:$IF_DHCP_HOSTNAME"
[ -n "$IF_DHCP_CLIENT_ID" ] && optargs="$optargs -c $IF_DHCP_CLIENT_ID"
[ -n "$IF_DHCP_SCRIPT" ] && optargs="$optargs -s $IF_DHCP_SCRIPT"
${MOCK} /sbin/udhcpc -b -R -p /var/run/udhcpc.$IFACE.pid -i $IFACE $optargs
;;
*)
;;
esac
}
stop() {
case "$1" in
dhcpcd)
${MOCK} /sbin/dhcpcd -k $IFACE
;;
dhclient)
${MOCK} kill -9 $(cat /var/run/dhclient.$IFACE.pid) 2>/dev/null
;;
udhcpc)
${MOCK} kill $(cat /var/run/udhcpc.$IFACE.pid)
;;
*)
;;
esac
}
impl=$(determine_implementation)
[ -z "$VERBOSE" ] || set -x
case "$PHASE" in
up) start $impl ;;
down) stop $impl || true ;;
*) ;;
esac
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