From 35aeea69c62a1755595d34b856d03f58cdd2da4c Mon Sep 17 00:00:00 2001
From: Viacheslav <v.gletenko@vyos.io>
Date: Mon, 11 Oct 2021 06:32:07 +0000
Subject: ddclient: T3897: Add option for IPv6 Dynamic DNS

---
 data/templates/dynamic-dns/ddclient.conf.tmpl     |  2 +-
 interface-definitions/dns-dynamic.xml.in          |  6 ++++
 smoketest/scripts/cli/test_service_dns_dynamic.py | 38 +++++++++++++++++++++++
 src/conf_mode/dynamic_dns.py                      |  2 +-
 4 files changed, 46 insertions(+), 2 deletions(-)

diff --git a/data/templates/dynamic-dns/ddclient.conf.tmpl b/data/templates/dynamic-dns/ddclient.conf.tmpl
index 9d379de00..517e4bad4 100644
--- a/data/templates/dynamic-dns/ddclient.conf.tmpl
+++ b/data/templates/dynamic-dns/ddclient.conf.tmpl
@@ -9,7 +9,7 @@ ssl=yes
 {%     set web_skip = ", web-skip='" + interface[iface].use_web.skip + "'" if interface[iface].use_web.skip is defined else '' %}
 use=web, web='{{ interface[iface].use_web.url }}'{{ web_skip }}
 {%   else %}
-use=if, if={{ iface }}
+{{ 'usev6=if' if interface[iface].ipv6_enable is defined else 'use=if' }}, if={{ iface }}
 {%   endif %}
 
 {%   if interface[iface].rfc2136 is defined and interface[iface].rfc2136 is not none %}
diff --git a/interface-definitions/dns-dynamic.xml.in b/interface-definitions/dns-dynamic.xml.in
index 250642691..64826516e 100644
--- a/interface-definitions/dns-dynamic.xml.in
+++ b/interface-definitions/dns-dynamic.xml.in
@@ -274,6 +274,12 @@
                       </leafNode>
                     </children>
                   </node>
+                  <leafNode name="ipv6-enable">
+                    <properties>
+                      <help>Allow explicit IPv6 addresses for Dynamic DNS for this interface</help>
+                      <valueless/>
+                    </properties>
+                  </leafNode>
                 </children>
               </tagNode>
             </children>
diff --git a/smoketest/scripts/cli/test_service_dns_dynamic.py b/smoketest/scripts/cli/test_service_dns_dynamic.py
index d8a87ffd4..03fccf2c7 100755
--- a/smoketest/scripts/cli/test_service_dns_dynamic.py
+++ b/smoketest/scripts/cli/test_service_dns_dynamic.py
@@ -24,6 +24,7 @@ from vyos.configsession import ConfigSession
 from vyos.configsession import ConfigSessionError
 from vyos.util import cmd
 from vyos.util import process_named_running
+from vyos.util import read_file
 
 PROCESS_NAME = 'ddclient'
 DDCLIENT_CONF = '/run/ddclient/ddclient.conf'
@@ -122,5 +123,42 @@ class TestServiceDDNS(VyOSUnitTestSHIM.TestCase):
         # Check for running process
         self.assertTrue(process_named_running(PROCESS_NAME))
 
+    def test_dyndns_ipv6(self):
+        ddns = ['interface', 'eth0', 'service', 'dynv6']
+        hostname = 'test.ddns.vyos.io'
+        proto = 'dyndns2'
+        user = 'none'
+        password = 'paSS_4ord'
+        servr = 'ddns.vyos.io'
+
+        self.cli_set(base_path + ['interface', 'eth0', 'ipv6-enable'])
+        self.cli_set(base_path + ddns + ['host-name', hostname])
+        self.cli_set(base_path + ddns + ['login', user])
+        self.cli_set(base_path + ddns + ['password', password])
+        self.cli_set(base_path + ddns + ['protocol', proto])
+        self.cli_set(base_path + ddns + ['server', servr])
+
+        # commit changes
+        self.cli_commit()
+
+        # Check for running process
+        self.assertTrue(process_named_running(PROCESS_NAME))
+
+        config = read_file(DDCLIENT_CONF)
+
+        protocol = get_config_value('protocol')
+        login = get_config_value('login')
+        pwd = get_config_value('password')
+        server = get_config_value('server')
+
+        # Check some generating config parameters
+        self.assertTrue(protocol == proto)
+        self.assertTrue(login == user)
+        self.assertTrue(pwd == "'" + password + "'")
+        self.assertTrue(server == servr)
+
+        self.assertIn('usev6=if', config)
+        self.assertIn(hostname, config)
+
 if __name__ == '__main__':
     unittest.main(verbosity=2)
diff --git a/src/conf_mode/dynamic_dns.py b/src/conf_mode/dynamic_dns.py
index c979feca7..646de6324 100755
--- a/src/conf_mode/dynamic_dns.py
+++ b/src/conf_mode/dynamic_dns.py
@@ -132,7 +132,7 @@ def generate(dyndns):
         return None
 
     render(config_file, 'dynamic-dns/ddclient.conf.tmpl', dyndns,
-           permission=0o600)
+           permission=0o644)
 
     return None
 
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