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-rwxr-xr-xsrc/conf_mode/protocols_igmp.py121
1 files changed, 121 insertions, 0 deletions
diff --git a/src/conf_mode/protocols_igmp.py b/src/conf_mode/protocols_igmp.py
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+++ b/src/conf_mode/protocols_igmp.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 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 ipaddress import IPv4Address
+from jinja2 import FileSystemLoader, Environment
+from sys import exit
+
+from vyos import ConfigError
+from vyos.config import Config
+from vyos.defaults import directories as vyos_data_dir
+from vyos.util import call
+
+
+config_file = r'/tmp/igmp.frr'
+
+def get_config():
+ conf = Config()
+ igmp_conf = {
+ 'igmp_conf' : False,
+ 'old_ifaces' : {},
+ 'ifaces' : {}
+ }
+ if not (conf.exists('protocols igmp') or conf.exists_effective('protocols igmp')):
+ return None
+
+ if conf.exists('protocols igmp'):
+ igmp_conf['igmp_conf'] = True
+
+ conf.set_level('protocols igmp')
+
+ # # Get interfaces
+ for iface in conf.list_effective_nodes('interface'):
+ igmp_conf['old_ifaces'].update({
+ iface : {
+ 'version' : conf.return_effective_value('interface {0} version'.format(iface)),
+ 'query_interval' : conf.return_effective_value('interface {0} query-interval'.format(iface)),
+ 'query_max_resp_time' : conf.return_effective_value('interface {0} query-max-response-time'.format(iface)),
+ 'gr_join' : {}
+ }
+ })
+ for gr_join in conf.list_effective_nodes('interface {0} join'.format(iface)):
+ igmp_conf['old_ifaces'][iface]['gr_join'][gr_join] = conf.return_effective_values('interface {0} join {1} source'.format(iface, gr_join))
+
+ for iface in conf.list_nodes('interface'):
+ igmp_conf['ifaces'].update({
+ iface : {
+ 'version' : conf.return_value('interface {0} version'.format(iface)),
+ 'query_interval' : conf.return_value('interface {0} query-interval'.format(iface)),
+ 'query_max_resp_time' : conf.return_value('interface {0} query-max-response-time'.format(iface)),
+ 'gr_join' : {}
+ }
+ })
+ for gr_join in conf.list_nodes('interface {0} join'.format(iface)):
+ igmp_conf['ifaces'][iface]['gr_join'][gr_join] = conf.return_values('interface {0} join {1} source'.format(iface, gr_join))
+
+ return igmp_conf
+
+def verify(igmp):
+ if igmp is None:
+ return None
+
+ if igmp['igmp_conf']:
+ # Check interfaces
+ if not igmp['ifaces']:
+ raise ConfigError(f"IGMP require defined interfaces!")
+ # Check, is this multicast group
+ for intfc in igmp['ifaces']:
+ for gr_addr in igmp['ifaces'][intfc]['gr_join']:
+ if IPv4Address(gr_addr) < IPv4Address('224.0.0.0'):
+ raise ConfigError(gr_addr + " not a multicast group")
+
+def generate(igmp):
+ if igmp is None:
+ return None
+
+ # Prepare Jinja2 template loader from files
+ tmpl_path = os.path.join(vyos_data_dir['data'], 'templates', 'igmp')
+ fs_loader = FileSystemLoader(tmpl_path)
+ env = Environment(loader=fs_loader)
+
+ tmpl = env.get_template('igmp.frr.tmpl')
+ config_text = tmpl.render(igmp)
+ with open(config_file, 'w') as f:
+ f.write(config_text)
+
+ return None
+
+def apply(igmp):
+ if igmp is None:
+ return None
+
+ if os.path.exists(config_file):
+ call("sudo vtysh -d pimd -f " + config_file)
+ os.remove(config_file)
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)