1 files changed, 99 insertions, 0 deletions
diff --git a/net-scripts/net/tuntap.sh b/net-scripts/net/tuntap.sh
new file mode 100644
index 0000000..597cb12
--- /dev/null
+++ b/net-scripts/net/tuntap.sh
@@ -0,0 +1,99 @@
+#!/bin/bash
+# Copyright (c) 2004-2005 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)
+openvpn() {
+	LC_ALL=C /usr/sbin/openvpn "$@"
+}
+tunctl() {
+	LC_ALL=C /usr/bin/tunctl "$@"
+}
+
+# void tuntap_depend(void)
+#
+# Sets up the dependancies for the module
+tuntap_depend() {
+	before interface macchanger
+	functions interface_exists interface_type
+	variables tunctl
+}
+
+# bool tuntap_check_installed(void)
+#
+# Returns 1 if tuntap is installed, otherwise 0
+tuntap_check_installed() {
+	[[ -x /usr/sbin/openvpn ]] && return 0
+	[[ -x /usr/bin/tunctl ]] && return 0
+	${1:-false} && eerror "For TunTap support, emerge net-misc/openvpn or sys-apps/usermode-utilities"
+	return 1
+}
+
+# bool tuntap_check_kernel(void)
+#
+# Checks to see if the tun is present - if not try and load it
+# Returns 1 if there is a problem
+tuntap_check_kernel() {
+	[[ -a /dev/net/tun ]] && return 0
+	/sbin/modprobe tun && sleep 1
+	[[ -a /dev/net/tun ]] && return 0
+	eerror "TUN/TAP support is not present in this kernel"
+	return 1
+}
+
+# bool tuntap_exists(char *interface)
+#
+# Returns 0 if the tun/tap interface exists, otherwise 1
+tuntap_exists() {
+	[[ -n $(get_options tuntap "net.$1") ]]
+}
+
+# bool tuntap_pre_start(char *iface)
+#
+# Create the device, give it the right perms
+tuntap_pre_start() {
+	local iface="$1" ifvar="$(bash_variable "$1")"
+	local tuntap="tuntap_${ifvar}"
+
+	[[ -z ${!tuntap} ]] && return 0
+	tuntap_check_kernel || return 1
+
+	ebegin "Creating Tun/Tap interface ${iface}"
+
+	# Set the base metric to 1000
+	metric=1000
+	
+	if [[ -x /usr/sbin/openvpn ]] ; then
+		openvpn --mktun --dev-type "${!tuntap}" --dev "${iface}" \
+			> /dev/null
+	else
+		local opts="tunctl_${ifvar}"
+		tunctl ${!opts} -t "${iface}" >/dev/null
+	fi
+	eend $? && save_options tuntap "${!tuntap}"
+}
+
+# bool tuntap_stop(char *iface)
+#
+# Removes the device
+tuntap_stop() {
+	local iface="$1"
+
+	tuntap_check_installed || return 0
+	tuntap_exists "${iface}" || return 0
+
+	ebegin "Destroying Tun/Tap interface ${iface}"
+	if [[ -x /usr/sbin/openvpn ]] ; then
+		openvpn --rmtun \
+			--dev-type "$(get_options tuntap)" \
+			--dev "${iface}" > /dev/null
+	else
+		tunctl -d "${fiace}" >/dev/null
+	fi
+	eend $?
+}
+
+# vim:ts=4