From e416035c66fe8f8bcb0dfce8058deff10656075c Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Fri, 28 May 2021 19:13:59 +0200
Subject: vti: T1579: implement Virtual Tunnel Interfaces using XML and Python

---
 interface-definitions/interfaces-vti.xml.in | 39 +++++++++++++++++++
 src/conf_mode/interfaces-vti.py             | 59 +++++++++++++++++++++++++++++
 2 files changed, 98 insertions(+)
 create mode 100644 interface-definitions/interfaces-vti.xml.in
 create mode 100755 src/conf_mode/interfaces-vti.py

diff --git a/interface-definitions/interfaces-vti.xml.in b/interface-definitions/interfaces-vti.xml.in
new file mode 100644
index 000000000..604d7dd29
--- /dev/null
+++ b/interface-definitions/interfaces-vti.xml.in
@@ -0,0 +1,39 @@
+<?xml version="1.0"?>
+<interfaceDefinition>
+  <node name="interfaces">
+    <children>
+      <tagNode name="vti" owner="${vyos_conf_scripts_dir}/interfaces-vti.py">
+        <properties>
+          <help>Virtual Tunnel interface</help>
+          <priority>381</priority>
+          <constraint>
+            <regex>^vti[0-9]+$</regex>
+          </constraint>
+          <constraintErrorMessage>VTI interface must be named vtiN</constraintErrorMessage>
+          <valueHelp>
+            <format>vtiN</format>
+            <description>VTI interface name</description>
+          </valueHelp>
+        </properties>
+        <children>
+          <leafNode name="address">
+            <properties>
+              <help>IP address</help>
+              <valueHelp>
+                <format>ipv4net</format>
+                <description>IPv4 address and prefix length</description>
+              </valueHelp>
+              <constraint>
+                <validator name="ipv4-host"/>
+              </constraint>
+              <multi/>
+            </properties>
+          </leafNode>
+          #include <include/interface/interface-description.xml.i>
+          #include <include/interface/interface-disable.xml.i>
+          #include <include/interface/interface-mtu-68-16000.xml.i>
+        </children>
+      </tagNode>
+    </children>
+  </node>
+</interfaceDefinition>
diff --git a/src/conf_mode/interfaces-vti.py b/src/conf_mode/interfaces-vti.py
new file mode 100755
index 000000000..432d113e8
--- /dev/null
+++ b/src/conf_mode/interfaces-vti.py
@@ -0,0 +1,59 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 VyOS maintainers and contributors
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 or later as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+from sys import exit
+
+from vyos.config import Config
+from vyos.configdict import get_interface_dict
+from vyos.ifconfig import VTIIf
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+def get_config(config=None):
+    """
+    Retrive CLI config as dictionary. Dictionary can never be empty, as at least the
+    interface name will be added or a deleted flag
+    """
+    if config:
+        conf = config
+    else:
+        conf = Config()
+    base = ['interfaces', 'vti']
+    vti = get_interface_dict(conf, base)
+    return vti
+
+def verify(vti):
+    if 'deleted' in vti:
+        return None
+
+    return None
+
+def generate(vti):
+    return None
+
+def apply(vti):
+    return None
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        exit(1)
-- 
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