1 files changed, 103 insertions, 0 deletions
diff --git a/net-scripts/net.modules.d/tuntap.sh b/net-scripts/net.modules.d/tuntap.sh
new file mode 100644
index 0000000..e0d1865
--- /dev/null
+++ b/net-scripts/net.modules.d/tuntap.sh
@@ -0,0 +1,103 @@
+# 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)
+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
+}
+
+# void tuntap_expose(void)
+#
+# Expose variables that can be configured
+tuntap_expose() {
+	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
+	${1:-false} && eerror "For TunTap support, emerge net-misc/openvpn or sys-apps/usermode-utilities"
+	return 1
+}
+
+# bool tuntap_check_kernel(void)
+#
+# Checks to see if the tun is present - if not try and load it
+# Returns 1 if there is a problem
+tuntap_check_kernel() {
+	[[ -a /dev/net/tun ]] && return 0
+	/sbin/modprobe tun && sleep 1
+	[[ -a /dev/net/tun ]] && return 0
+	eerror "TUN/TAP support is not present in this kernel"
+	return 1
+}
+
+# bool tuntap_exists(char *interface)
+#
+# Returns 0 if the tun/tap interface exists, otherwise 1
+tuntap_exists() {
+	local itype="$(interface_type "$1")"
+	[[ ${itype} != "tun" && ${itype} != "tap" ]] && return 1
+	interface_exists "$1"
+}
+
+# bool tuntap_pre_start(char *iface)
+#
+# Create the device, give it the right perms
+tuntap_pre_start() {
+	local iface="$1" itype="$(interface_type "$1")"
+
+	# Check that we are a valid tun/tap interface
+	# NOTE - the name can be anything as we define it
+	# but for simplicity in the config we require either
+	# tun or tap
+	[[ ${itype} != "tun" && ${itype} != "tap" ]] && return 0
+
+	tuntap_check_kernel || return 1
+
+	ebegin "Creating Tun/Tap interface ${iface}"
+	if [[ -x /usr/sbin/openvpn ]] ; then
+		openvpn --mktun --dev "${iface}" >/dev/null
+	else
+		local ifvar="$(bash_variable "${iface}")"
+		local opts="tunctl_${ifvar}"
+		tunctl ${!opts} -t "${iface}" >/dev/null
+	fi
+	eend $?
+}
+
+# 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 ${iface}"
+	if [[ -x /usr/sbin/openvpn ]] ; then
+		openvpn --rmtun --dev "${iface}" >/dev/null
+	else
+		tunctl -d "${fiace}" >/dev/null
+	fi
+	eend $?
+}
+
+# vim: set ft=sh ts=4 :