1 files changed, 107 insertions, 0 deletions
diff --git a/net/xl2tpd/files/l2tpv2.sh b/net/xl2tpd/files/l2tpv2.sh
new file mode 100644
index 000000000..6466cf0be
--- /dev/null
+++ b/net/xl2tpd/files/l2tpv2.sh
@@ -0,0 +1,107 @@
+#!/bin/sh
+
+[ -x /usr/sbin/xl2tpd ] || exit 0
+
+[ -n "$INCLUDE_ONLY" ] || {
+	. /lib/functions.sh
+	. ../netifd-proto.sh
+	init_proto "$@"
+}
+
+proto_l2tpv2_init_config() {
+	proto_config_add_string "username"
+	proto_config_add_string "password"
+	proto_config_add_string "keepalive"
+	proto_config_add_string "pppd_options"
+	proto_config_add_boolean "ipv6"
+	proto_config_add_int "mtu"
+	proto_config_add_string "server"
+	available=1
+	no_device=1
+}
+
+proto_l2tpv2_setup() {
+	local config="$1"
+	local iface="$2"
+	local optfile="/tmp/l2tp/options.${config}"
+
+	local ip serv_addr server
+	json_get_var server server && {
+		for ip in $(resolveip -t 5 "$server"); do
+			( proto_add_host_dependency "$config" "$ip" )
+			serv_addr=1
+		done
+	}
+	[ -n "$serv_addr" ] || {
+		echo "Could not resolve server address"
+		sleep 5
+		proto_setup_failed "$config"
+		exit 1
+	}
+
+	if [ ! -p /var/run/xl2tpd/l2tp-control ]; then
+		/etc/init.d/xl2tpd start
+	fi
+
+	json_get_vars ipv6 demand keepalive username password pppd_options
+	[ "$ipv6" = 1 ] || ipv6=""
+	if [ "${demand:-0}" -gt 0 ]; then
+		demand="precompiled-active-filter /etc/ppp/filter demand idle $demand"
+	else
+		demand="persist"
+	fi
+
+	[ -n "$mtu" ] || json_get_var mtu mtu
+
+	local interval="${keepalive##*[, ]}"
+	[ "$interval" != "$keepalive" ] || interval=5
+
+	mkdir -p /tmp/l2tp
+
+	echo "${keepalive:+lcp-echo-interval $interval lcp-echo-failure ${keepalive%%[, ]*}}" > "${optfile}"
+	echo "usepeerdns" >> "${optfile}"
+	echo "nodefaultroute" >> "${optfile}"
+	echo "${username:+user \"$username\" password \"$password\"}" >> "${optfile}"
+	echo "ipparam \"$config\"" >> "${optfile}"
+	echo "ifname \"l2tp-$config\"" >> "${optfile}"
+	echo "ip-up-script /lib/netifd/ppp-up" >> "${optfile}"
+	echo "ipv6-up-script /lib/netifd/ppp-up" >> "${optfile}"
+	echo "ip-down-script /lib/netifd/ppp-down" >> "${optfile}"
+	echo "ipv6-down-script /lib/netifd/ppp-down" >> "${optfile}"
+	# Don't wait for LCP term responses; exit immediately when killed.
+	echo "lcp-max-terminate 0" >> "${optfile}"
+	echo "${ipv6:++ipv6} ${pppd_options}" >> "${optfile}"
+	echo "${mtu:+mtu $mtu mru $mtu}" >> "${optfile}"
+
+	xl2tpd-control add l2tp-${config} pppoptfile=${optfile} lns=${server} redial=yes redial timeout=20
+	xl2tpd-control connect l2tp-${config}
+}
+
+proto_l2tpv2_teardown() {
+	local interface="$1"
+	local optfile="/tmp/l2tp/options.${interface}"
+
+	case "$ERROR" in
+		11|19)
+			proto_notify_error "$interface" AUTH_FAILED
+			proto_block_restart "$interface"
+		;;
+		2)
+			proto_notify_error "$interface" INVALID_OPTIONS
+			proto_block_restart "$interface"
+		;;
+	esac
+
+	xl2tpd-control disconnect l2tp-${interface}
+	# Wait for interface to go down
+        while [ -d /sys/class/net/l2tp-${interface} ]; do
+		sleep 1
+	done
+
+	xl2tpd-control remove l2tp-${interface}
+	rm -f ${optfile}
+}
+
+[ -n "$INCLUDE_ONLY" ] || {
+	add_protocol l2tpv2
+}