From 8f057286d36a8e5bf09b4ccd9d1dd5d3210ee0c6 Mon Sep 17 00:00:00 2001
From: Ariadne Conill <ariadne@dereferenced.org>
Date: Thu, 20 Aug 2020 02:30:12 -0600
Subject: [PATCH] add gre executor

---
 executor-scripts/linux/gre | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100755 executor-scripts/linux/gre

diff --git a/executor-scripts/linux/gre b/executor-scripts/linux/gre
new file mode 100755
index 0000000..7006d4c
--- /dev/null
+++ b/executor-scripts/linux/gre
@@ -0,0 +1,29 @@
+#!/bin/sh
+
+# Executor for advanced GRE tunnel management.
+
+[ -z "$IF_GRE_LOCAL" ] && exit 1
+[ -z "$IF_GRE_REMOTE" ] && exit 1
+[ -z "$IF_GRE_MODE" ] && exit 1
+
+COMMAND="link"
+FAMILY="-4"
+[ "$IF_GRE_MODE" = "ip6gre" ] && FAMILY="-6"
+
+PARAMS="mode $IF_GRE_MODE local '$IF_GRE_LOCAL' remote '$IF_GRE_REMOTE'"
+[ -n "$IF_GRE_TTL" ] && PARAMS="$PARAMS ttl '$IF_GRE_TTL'"
+[ -n "$IF_GRE_FLAGS" ] && PARAMS="$PARAMS $IF_GRE_FLAGS"
+
+[ -n "$PARAMS" ] || exit 0
+
+case "$PHASE" in
+pre-up)
+	${MOCK} eval ip $FAMILY $COMMAND add $IFACE $PARAMS
+	;;
+post-down)
+	${MOCK} ip $FAMILY $COMMAND del $IFACE
+	;;
+depend)
+	echo "$IF_TUNNEL_DEV"
+	;;
+esac