nat: nptv6: T2198: add XML/Python skeleton

- define XML CLI interface
- read CLI into Python dict

3 files changed, 90 insertions, 9 deletions

diff --git a/interface-definitions/include/nat-outbound-interface.xml.i b/interface-definitions/include/nat-outbound-interface.xml.i
new file mode 100644
index 000000000..d562f7f03
--- /dev/null
+++ b/interface-definitions/include/nat-outbound-interface.xml.i
@@ -0,0 +1,8 @@
+<leafNode name="outbound-interface">
+  <properties>
+    <help>Outbound interface of NAT traffic</help>
+    <completionHelp>
+      <script>${vyos_completion_dir}/list_interfaces.py</script>
+    </completionHelp>
+  </properties>
+</leafNode>
diff --git a/interface-definitions/nat.xml.in b/interface-definitions/nat.xml.in
index af9dd1eff..a0b3b815b 100644
--- a/interface-definitions/nat.xml.in
+++ b/interface-definitions/nat.xml.in
@@ -52,22 +52,87 @@
           </tagNode>
         </children>
       </node>
-      <node name="source">
+      <node name="nptv6">
         <properties>
-          <help>Source NAT settings</help>
+          <help>IPv6-to-IPv6 Network Prefix Translation Settings</help>
         </properties>
         <children>
-          #include <include/nat-rule.xml.i>
           <tagNode name="rule">
+            <properties>
+              <help>NPTv6 rule number</help>
+              <valueHelp>
+                <format>1-9999</format>
+                <description>Number for this rule</description>
+              </valueHelp>
+              <constraint>
+                <validator name="numeric" argument="--range 1-9999"/>
+              </constraint>
+              <constraintErrorMessage>NAT rule number must be between 1 and 9999</constraintErrorMessage>
+            </properties>
             <children>
-              <leafNode name="outbound-interface">
+              <leafNode name="description">
                 <properties>
-                  <help>Outbound interface of NAT traffic</help>
-                  <completionHelp>
-                    <script>${vyos_completion_dir}/list_interfaces.py</script>
-                  </completionHelp>
+                  <help>Rule description</help>
                 </properties>
               </leafNode>
+              <leafNode name="disable">
+                <properties>
+                  <help>Disable NAT rule</help>
+                  <valueless/>
+                </properties>
+              </leafNode>
+              #include <include/nat-outbound-interface.xml.i>
+              <node name="source">
+                <properties>
+                  <help>IPv6 source prefix options</help>
+                </properties>
+                <children>
+                  <leafNode name="prefix">
+                    <properties>
+                      <help>IPv6 prefix to be translated</help>
+                      <valueHelp>
+                        <format>ipv6net</format>
+                        <description>IPv6 prefix</description>
+                      </valueHelp>
+                      <constraint>
+                        <validator name="ipv6-prefix"/>
+                      </constraint>
+                    </properties>
+                  </leafNode>
+                </children>
+              </node>
+              <node name="translation">
+                <properties>
+                  <help>Translated IPv6 prefix options</help>
+                </properties>
+                <children>
+                  <leafNode name="prefix">
+                    <properties>
+                      <help>IPv6 prefix to translate to</help>
+                      <valueHelp>
+                        <format>ipv6net</format>
+                        <description>IPv6 prefix</description>
+                      </valueHelp>
+                      <constraint>
+                        <validator name="ipv6-prefix"/>
+                      </constraint>
+                    </properties>
+                  </leafNode>
+                </children>
+              </node>
+            </children>
+          </tagNode>
+        </children>
+      </node>
+      <node name="source">
+        <properties>
+          <help>Source NAT settings</help>
+        </properties>
+        <children>
+          #include <include/nat-rule.xml.i>
+          <tagNode name="rule">
+            <children>
+              #include <include/nat-outbound-interface.xml.i>
               <node name="translation">
                 <properties>
                   <help>Outside NAT IP (source NAT only)</help>
diff --git a/src/conf_mode/nat.py b/src/conf_mode/nat.py
index 5cb1af1f1..406ec1caf 100755
--- a/src/conf_mode/nat.py
+++ b/src/conf_mode/nat.py
@@ -102,8 +102,10 @@ def parse_source_destination(conf, source_dest):
             'protocol': 'all',
             'number': number,
             'source_address': '',
+            'source_prefix': '',
             'source_port': '',
             'translation_address': '',
+            'translation_prefix': '',
             'translation_port': ''
         }
         conf.set_level(base_level + ['rule', number])
@@ -138,12 +140,18 @@ def parse_source_destination(conf, source_dest):
         if conf.exists(['source', 'address']):
             rule['source_address'] = conf.return_value(['source', 'address'])
 
+        if conf.exists(['source', 'prefix']):
+            rule['source_prefix'] = conf.return_value(['source', 'prefix'])
+
         if conf.exists(['source', 'port']):
             rule['source_port'] = conf.return_value(['source', 'port'])
 
         if conf.exists(['translation', 'address']):
             rule['translation_address'] = conf.return_value(['translation', 'address'])
 
+        if conf.exists(['translation', 'prefix']):
+            rule['translation_prefix'] = conf.return_value(['translation', 'prefix'])
+
         if conf.exists(['translation', 'port']):
             rule['translation_port'] = conf.return_value(['translation', 'port'])
 
@@ -193,7 +201,7 @@ def get_config():
     # use a common wrapper function to read in the source / destination
     # tree from the config - thus we do not need to replicate almost the
     # same code :-)
-    for tgt in ['source', 'destination']:
+    for tgt in ['source', 'destination', 'nptv6']:
         nat[tgt] = parse_source_destination(conf, tgt)
 
     return nat