From 1df3827994bfef6c166bdb0f51cc51c212507361 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Fri, 16 Mar 2018 20:09:59 +0100
Subject: Initial CLI interface support for XML DNS forwarder

---
 interface-definitions/dns-forwarding.xml    | 96 +++++++++++++++++++++++++++++
 src/conf-mode/vyos-config-dns-forwarding.py | 45 ++++++++++++++
 2 files changed, 141 insertions(+)
 create mode 100644 interface-definitions/dns-forwarding.xml
 create mode 100755 src/conf-mode/vyos-config-dns-forwarding.py

diff --git a/interface-definitions/dns-forwarding.xml b/interface-definitions/dns-forwarding.xml
new file mode 100644
index 000000000..d9af20e9f
--- /dev/null
+++ b/interface-definitions/dns-forwarding.xml
@@ -0,0 +1,96 @@
+<?xml version="1.0"?>
+
+<!-- DNS forwarder configuration -->
+
+<interfaceDefinition>
+  <node name="service">
+    <children>
+      <node name="dns">
+        <children>
+          <node name="forwarding" owner="${vyos_sbindir}/vyos-config-dns-forwarding.py">
+            <properties>
+              <help>DNS forwarding</help>
+              <priority>918</priority>
+            </properties>
+            <children>
+              <leafNode name="cache-size">
+                <properties>
+                  <help>DNS forwarding cache size</help>
+                  <valueHelp>
+                    <format>u32:0-10000</format>
+                    <description>DNS forwarding cache size</description>
+                  </valueHelp>
+                  <type>u32</type>
+                </properties>
+              </leafNode>
+              <leafNode name="dhcp">
+                <properties>
+                  <help>Use nameservers received from DHCP server for specified interface</help>
+                  <multi/>
+                </properties>
+              </leafNode>
+              <tagNode name="domain">
+                <properties>
+                  <help>DNS domain to forward to a local server</help>
+                </properties>
+                <children>
+                  <leafNode name="server">
+                    <properties>
+                      <help>Domain Name Server (DNS) to forward queries</help>
+                      <valueHelp>
+                        <format>ipv4</format>
+                        <description>Domain Name Server (DNS) IPv4 address</description>
+                      </valueHelp>
+                      <valueHelp>
+                        <format>ipv6</format>
+                        <description>Domain Name Server (DNS) IPv6 address</description>
+                      </valueHelp>
+                    </properties>
+                  </leafNode>
+                </children>
+              </tagNode>
+              <leafNode name="ignore-hosts-file">
+                <properties>
+                <help>Do not use local /etc/hosts file in name resolution</help>
+              </properties>
+              </leafNode>
+              <leafNode name="listen-on">
+                <properties>
+                  <help>Interface to listen for DNS queries [REQUIRED]</help>
+                  <completionHelp>
+                    <script>${vyatta_sbindir}/vyatta-interfaces.pl --show all</script>
+                  </completionHelp>
+                  <multi/>
+                </properties>
+              </leafNode>
+              <leafNode name="name-server">
+                <properties>
+                  <help>Domain Name Server (DNS)</help>
+                  <valueHelp>
+                    <format>ipv4</format>
+                    <description>Domain Name Server (DNS) IPv4 address</description>
+                  </valueHelp>
+                  <valueHelp>
+                    <format>ipv6</format>
+                    <description>Domain Name Server (DNS) IPv6 address</description>
+                  </valueHelp>
+                <multi/>
+                </properties>
+              </leafNode>
+              <leafNode name="query-all-servers">
+                <properties>
+                  <help>Query all DNS servers, respond and cache fastest result</help>
+                </properties>
+              </leafNode>
+              <leafNode name="system">
+                <properties>
+                  <help>DNS forwarding to system nameservers</help>
+                </properties>
+              </leafNode>
+            </children>
+          </node>
+        </children>
+      </node>
+    </children>
+  </node>
+</interfaceDefinition>
diff --git a/src/conf-mode/vyos-config-dns-forwarding.py b/src/conf-mode/vyos-config-dns-forwarding.py
new file mode 100755
index 000000000..27e7a5ef5
--- /dev/null
+++ b/src/conf-mode/vyos-config-dns-forwarding.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018 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/>.
+#
+#
+
+import sys
+import os
+
+from vyos.config import Config
+from vyos.util import ConfigError
+
+def get_config():
+    return None
+
+def verify(dns):
+    return None
+
+def generate(dns):
+    return None
+
+def apply(dns):
+    return None
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        sys.exit(1)
-- 
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