1 files changed, 117 insertions, 0 deletions
diff --git a/net-scripts/net.modules.d/udhcpc.sh b/net-scripts/net.modules.d/udhcpc.sh
new file mode 100644
index 0000000..041afb2
--- /dev/null
+++ b/net-scripts/net.modules.d/udhcpc.sh
@@ -0,0 +1,117 @@
+# Copyright (c) 2004-2006 Gentoo Foundation
+# Distributed under the terms of the GNU General Public License v2
+# Contributed by Roy Marples (uberlord@gentoo.org)
+
+# Fix any potential localisation problems
+# Note that LC_ALL trumps LC_anything_else according to locale(7)
+udhcpc() {
+	LC_ALL=C /sbin/udhcpc "$@"
+}
+
+# void udhcpc_depend(void)
+#
+# Sets up the dependancies for the module
+udhcpc_depend() {
+	after interface
+	provide dhcp
+	functions interface_exists interface_get_address
+}
+
+# void udhcpc_expose(void)
+#
+# Expose variables that can be configured
+udhcpc_expose() {
+	variables udhcpc dhcp
+}
+
+# bool udhcpc_check_installed(void)
+#
+# Returns 1 if udhcpc is installed, otherwise 0
+udhcpc_check_installed() {
+	[[ -x /sbin/udhcpc ]] && return 0
+	${1:-false} && eerror "For DHCP (udhcpc) support, emerge net-misc/udhcp"
+	return 1
+}
+
+# bool udhcpc_stop(char *iface)
+#
+# Stops udhcpc running on an interface
+# Return 1 if we fail to stop udhcpc (if it's running) otherwise 0
+udhcpc_stop() {
+	local iface="$1" pidfile="/var/run/udhcpc-$1.pid" d
+
+	[[ ! -f ${pidfile} ]] && return 0
+
+	ebegin "Stopping udhcpc on ${iface}"
+	local pid="$(<"${pidfile}")" e=true
+
+	local ifvar="$(bash_variable "${iface}")"
+	d="dhcp_${ifvar}"
+	d=" ${!d} "
+	[[ ${d} == "  " ]] && d=" ${dhcp} "
+
+	if [[ ${d} == *" release "* ]]; then
+		kill -s USR2 "${pid}" &>/dev/null
+		[[ -f "/var/cache/udhcpc-${iface}.lease" ]] \
+			&& rm "/var/cache/udhcpc-${iface}.lease"
+	fi
+
+	start-stop-daemon --stop --exec /sbin/udhcpc --pidfile "${pidfile}"
+	eend $?
+}
+
+# bool udhcpc_start(char *iface)
+#
+# Start DHCP on an interface by calling udhcpc $iface $options
+#
+# Returns 0 (true) when a DHCP address is obtained, otherwise 1
+udhcpc_start() {
+	local iface="$1" opts pidfile="/var/run/udhcpc-$1.pid"
+	local cachefile="/var/cache/udhcpc-$1.lease" d
+
+	interface_exists "${iface}" true || return 1
+
+	local ifvar="$(bash_variable "${iface}" )" opts 
+	opts="udhcpc_${ifvar}"
+	opts="${!opts}"
+
+	d="dhcp_${ifvar}"
+	d=" ${!d} "
+	[[ ${d} == "  " ]] && d=" ${dhcp} "
+
+	if [[ " ${d} " != *" nosendhost "* ]]; then
+		if [[ ! " ${opts}" =~ " -([hH] |-hostname=)" ]]; then
+			local hname="$(hostname)"
+			[[ -n ${hname} && ${hname} != "(none)" && ${hname} != "localhost" ]] \
+				&& opts="${opts} --hostname=${hname}"
+		fi
+	fi
+
+	# Bring up DHCP for this interface (or alias)
+	ebegin "Running udhcpc"
+
+	# Try and load the cache if it exists
+	if [[ -f ${cachefile} ]]; then
+		if [[ " ${opts}" != *" --request="* && " ${opts} " != *" -r "* ]]; then
+			local x="$(<"${cachefile}")"
+			# Check for a valid ip
+			[[ ${x} == *.*.*.* ]] && opts="${opts} --request=${x}"
+		fi
+	fi
+
+	x="$( eval udhcpc "${opts}" --now --pidfile="${pidfile}" \
+		--interface="${iface}" \
+		--script="${MODULES_DIR}/helpers.d/udhcpc-wrapper" 2>&1 \
+		| egrep -v '^info,' )"
+	# We just check the last 5 letters
+	[[ ${x:((${#x} - 5)):5} == "bound" ]]
+	eend "$?" "${x}" || return 1
+
+	# DHCP succeeded, show address retrieved
+	local addr="$(interface_get_address "${iface}")"
+	einfo "${iface} received address ${addr}"
+
+	return 0
+}
+
+# vim: set ft=sh ts=4 :