From 4022a8820ccf0539f2eb5c19d9abd777810a48b4 Mon Sep 17 00:00:00 2001
From: Christian Poessinger <christian@poessinger.com>
Date: Sat, 30 Dec 2017 19:19:16 +0100
Subject: bcast-relay: Initial configuration nodes for 'service bcast-relay'
---
src/conf-mode/vyos-config-bcast-relay.py | 124 +++++++++++++++++++++++++++++++
1 file changed, 124 insertions(+)
create mode 100755 src/conf-mode/vyos-config-bcast-relay.py
(limited to 'src/conf-mode')
diff --git a/src/conf-mode/vyos-config-bcast-relay.py b/src/conf-mode/vyos-config-bcast-relay.py
new file mode 100755
index 000000000..682cb220e
--- /dev/null
+++ b/src/conf-mode/vyos-config-bcast-relay.py
@@ -0,0 +1,124 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2017 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 sys
+import os
+import fnmatch
+import time
+import subprocess
+
+from vyos.config import Config
+from vyos.util import ConfigError
+
+config_file = r'/etc/default/udp-broadcast-relay'
+
+def get_config():
+ conf = Config()
+ conf.set_level("service bcast-relay id")
+ relay_id = conf.list_nodes("")
+ relays = []
+
+ for id in relay_id:
+ interface_list = []
+ address = conf.return_value("{0} address".format(id))
+ description = conf.return_value("{0} description".format(id))
+ port = conf.return_value("{0} port".format(id))
+
+ # split the interface name listing and form a list
+ if conf.exists("{0} interface".format(id)):
+ intfs_names = conf.return_values("{0} interface".format(id))
+ intfs_names=intfs_names.replace("'", "")
+ intfs_names=intfs_names.split()
+ for name in intfs_names:
+ interface_list.append(name)
+
+ relay = {
+ "id": id,
+ "address": address,
+ "description": description,
+ "interfaces" : interface_list,
+ "port": port
+ }
+ relays.append(relay)
+
+ return relays
+
+def verify(relays):
+ for relay in relays:
+ if not relay["port"]:
+ raise ConfigError("UDP bcast relay 'id {0}' requires a port number".format(relay["id"]))
+
+ if len(relay["interfaces"]) < 2:
+ raise ConfigError("UDP bcast relay 'id {0}' requires at least 2 interfaces".format(relay["id"]))
+
+ return None
+
+def generate(relays):
+ config_header = '### Autogenerated by {0} on {tm} ###\n'.format(os.path.basename(__file__),
+ tm=time.strftime("%a, %d %b %Y %H:%M:%S", time.localtime()))
+
+ config_dir = os.path.dirname(config_file)
+ config_filename = os.path.basename(config_file)
+ active_configs = []
+
+ for config in fnmatch.filter(os.listdir(config_dir), config_filename + '*'):
+ # determine prefix length to identify service instance
+ prefix_len = len(config_filename)
+ active_configs.append(config[prefix_len:])
+
+ # sort our list
+ active_configs.sort()
+
+ for id in active_configs[:]:
+ os.unlink(config_file + id)
+
+ for relay in relays:
+ file = config_file + str(relay["id"])
+ interfaces = ' '.join(str(intf) for intf in relay["interfaces"])
+ config_args = 'DAEMON_ARGS="{0} {1} {2}"\n'.format(relay["id"], relay["port"], interfaces)
+
+ f = open(file, 'w')
+ f.write(config_header)
+ if relay["description"]:
+ f.write('# ' + relay["description"] + '\n')
+ f.write(config_args)
+ f.close()
+
+ return None
+
+def apply(relays):
+ # first stop all running services
+ cmd = "sudo systemctl stop udp-broadcast-relay@{1..99}"
+ os.system(cmd)
+
+ # start only required service instances
+ for relay in relays:
+ cmd = "sudo systemctl start udp-broadcast-relay@{0}".format(relay["id"])
+ os.system(cmd)
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ sys.exit(1)
--
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