From 578cb6efbc085d8912a84c3f79782c32f202784b Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Sun, 5 Apr 2020 21:09:02 +0200
Subject: mdns-repeater: T2230: move inlined templates to dedicated files

---
 data/templates/mdns-repeater/mdns-repeater.tmpl |  2 ++
 src/conf_mode/mdns_repeater.py                  | 44 +++++++++++++------------
 2 files changed, 25 insertions(+), 21 deletions(-)
 create mode 100644 data/templates/mdns-repeater/mdns-repeater.tmpl

diff --git a/data/templates/mdns-repeater/mdns-repeater.tmpl b/data/templates/mdns-repeater/mdns-repeater.tmpl
new file mode 100644
index 000000000..3b9e828e7
--- /dev/null
+++ b/data/templates/mdns-repeater/mdns-repeater.tmpl
@@ -0,0 +1,2 @@
+### Autogenerated by mdns_repeater.py ###
+DAEMON_ARGS="{{ interfaces | join(' ') }}"
diff --git a/src/conf_mode/mdns_repeater.py b/src/conf_mode/mdns_repeater.py
index cef735c0d..f738cc6a6 100755
--- a/src/conf_mode/mdns_repeater.py
+++ b/src/conf_mode/mdns_repeater.py
@@ -1,6 +1,6 @@
 #!/usr/bin/env python3
 #
-# Copyright (C) 2017 VyOS maintainers and contributors
+# Copyright (C) 2017-2020 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
@@ -13,45 +13,42 @@
 #
 # 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
-import jinja2
-import netifaces
+
+from sys import exit
+from copy import deepcopy
+from jinja2 import FileSystemLoader, Environment
+from netifaces import ifaddresses, AF_INET
 
 from vyos.config import Config
+from vyos.defaults import directories as vyos_data_dir
 from vyos import ConfigError
 
 config_file = r'/etc/default/mdns-repeater'
 
-config_tmpl = """
-### Autogenerated by mdns_repeater.py ###
-DAEMON_ARGS="{{ interfaces | join(' ') }}"
-"""
-
 default_config_data = {
     'disabled': False,
     'interfaces': []
 }
 
 def get_config():
-    mdns = default_config_data
+    mdns = deepcopy(default_config_data)
     conf = Config()
-    if not conf.exists('service mdns repeater'):
+    base = ['service', 'mdns', 'repeater']
+    if not conf.exists(base):
         return None
     else:
-        conf.set_level('service mdns repeater')
+        conf.set_level(base)
 
     # Service can be disabled by user
-    if conf.exists('disable'):
+    if conf.exists(['disable']):
         mdns['disabled'] = True
         return mdns
 
     # Interface to repeat mDNS advertisements
-    if conf.exists('interface'):
-        mdns['interfaces'] = conf.return_values('interface')
+    if conf.exists(['interface']):
+        mdns['interfaces'] = conf.return_values(['interface'])
 
     return mdns
 
@@ -69,8 +66,8 @@ def verify(mdns):
     # For mdns-repeater to work it is essential that the interfaces has
     # an IPv4 address assigned
     for interface in mdns['interfaces']:
-        if netifaces.AF_INET in netifaces.ifaddresses(interface).keys():
-            if len(netifaces.ifaddresses(interface)[netifaces.AF_INET]) < 1:
+        if AF_INET in ifaddresses(interface).keys():
+            if len(ifaddresses(interface)[AF_INET]) < 1:
                 raise ConfigError('mDNS repeater requires an IPv6 address configured on interface %s!'.format(interface))
 
     return None
@@ -83,7 +80,12 @@ def generate(mdns):
         print('Warning: mDNS repeater will be deactivated because it is disabled')
         return None
 
-    tmpl = jinja2.Template(config_tmpl)
+    # Prepare Jinja2 template loader from files
+    tmpl_path = os.path.join(vyos_data_dir['data'], 'templates', 'mdns-repeater')
+    fs_loader = FileSystemLoader(tmpl_path)
+    env = Environment(loader=fs_loader)
+
+    tmpl = env.get_template('mdns-repeater.tmpl')
     config_text = tmpl.render(mdns)
     with open(config_file, 'w') as f:
         f.write(config_text)
@@ -108,4 +110,4 @@ if __name__ == '__main__':
         apply(c)
     except ConfigError as e:
         print(e)
-        sys.exit(1)
+        exit(1)
-- 
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