1 files changed, 142 insertions, 0 deletions
diff --git a/src/conf_mode/igmp_proxy.py b/src/conf_mode/igmp_proxy.py
new file mode 100755
index 000000000..49aea9b7f
--- /dev/null
+++ b/src/conf_mode/igmp_proxy.py
@@ -0,0 +1,142 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018-2020 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
+# 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 os
+
+from sys import exit
+from copy import deepcopy
+
+from netifaces import interfaces
+from vyos.config import Config
+from vyos import ConfigError
+from vyos.util import call
+from vyos.template import render
+
+from vyos import airbag
+airbag.enable()
+
+config_file = r'/etc/igmpproxy.conf'
+
+default_config_data = {
+    'disable': False,
+    'disable_quickleave': False,
+    'interfaces': [],
+}
+
+def get_config():
+    igmp_proxy = deepcopy(default_config_data)
+    conf = Config()
+    base = ['protocols', 'igmp-proxy']
+    if not conf.exists(base):
+        return None
+    else:
+        conf.set_level(base)
+
+    # Network interfaces to listen on
+    if conf.exists(['disable']):
+        igmp_proxy['disable'] = True
+
+    # Option to disable "quickleave"
+    if conf.exists(['disable-quickleave']):
+        igmp_proxy['disable_quickleave'] = True
+
+    for intf in conf.list_nodes(['interface']):
+        conf.set_level(base + ['interface', intf])
+        interface = {
+            'name': intf,
+            'alt_subnet': [],
+            'role': 'downstream',
+            'threshold': '1',
+            'whitelist': []
+        }
+
+        if conf.exists(['alt-subnet']):
+            interface['alt_subnet'] = conf.return_values(['alt-subnet'])
+
+        if conf.exists(['role']):
+            interface['role'] = conf.return_value(['role'])
+
+        if conf.exists(['threshold']):
+            interface['threshold'] = conf.return_value(['threshold'])
+
+        if conf.exists(['whitelist']):
+            interface['whitelist'] = conf.return_values(['whitelist'])
+
+        # Append interface configuration to global configuration list
+        igmp_proxy['interfaces'].append(interface)
+
+    return igmp_proxy
+
+def verify(igmp_proxy):
+    # bail out early - looks like removal from running config
+    if igmp_proxy is None:
+        return None
+
+    # bail out early - service is disabled
+    if igmp_proxy['disable']:
+        return None
+
+    # at least two interfaces are required, one upstream and one downstream
+    if len(igmp_proxy['interfaces']) < 2:
+        raise ConfigError('Must define an upstream and at least 1 downstream interface!')
+
+    upstream = 0
+    for interface in igmp_proxy['interfaces']:
+        if interface['name'] not in interfaces():
+            raise ConfigError('Interface "{}" does not exist'.format(interface['name']))
+        if "upstream" == interface['role']:
+            upstream += 1
+
+    if upstream == 0:
+        raise ConfigError('At least 1 upstream interface is required!')
+    elif upstream > 1:
+        raise ConfigError('Only 1 upstream interface allowed!')
+
+    return None
+
+def generate(igmp_proxy):
+    # bail out early - looks like removal from running config
+    if igmp_proxy is None:
+        return None
+
+    # bail out early - service is disabled, but inform user
+    if igmp_proxy['disable']:
+        print('Warning: IGMP Proxy will be deactivated because it is disabled')
+        return None
+
+    render(config_file, 'igmp-proxy/igmpproxy.conf.tmpl', igmp_proxy)
+    return None
+
+def apply(igmp_proxy):
+    if igmp_proxy is None or igmp_proxy['disable']:
+         # IGMP Proxy support is removed in the commit
+         call('systemctl stop igmpproxy.service')
+         if os.path.exists(config_file):
+             os.unlink(config_file)
+    else:
+        call('systemctl restart igmpproxy.service')
+
+    return None
+
+if __name__ == '__main__':
+    try:
+        c = get_config()
+        verify(c)
+        generate(c)
+        apply(c)
+    except ConfigError as e:
+        print(e)
+        exit(1)