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authorChristian Poessinger <christian@poessinger.com>2017-12-08 18:54:15 +0100
committerChristian Poessinger <christian@poessinger.com>2017-12-09 10:35:54 +0100
commita545cd18f98ad747af26176f9b05cc325e4dd5ff (patch)
tree77783a4ec3a7fd1359bec6823c7c76cd54071797 /src/conf-mode/vyos-config-mdns-repeater.py
parentf5c24a9e91f8ea5e0983697e4350cead206cea4e (diff)
downloadvyos-1x-a545cd18f98ad747af26176f9b05cc325e4dd5ff.tar.gz
vyos-1x-a545cd18f98ad747af26176f9b05cc325e4dd5ff.zip
Add 'vyos-update-mdns-repeater.py' functionality
Diffstat (limited to 'src/conf-mode/vyos-config-mdns-repeater.py')
-rwxr-xr-xsrc/conf-mode/vyos-config-mdns-repeater.py97
1 files changed, 97 insertions, 0 deletions
diff --git a/src/conf-mode/vyos-config-mdns-repeater.py b/src/conf-mode/vyos-config-mdns-repeater.py
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index 000000000..3f9eb1b2b
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+++ b/src/conf-mode/vyos-config-mdns-repeater.py
@@ -0,0 +1,97 @@
+#!/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 netifaces
+import time
+import subprocess
+
+from vyos.config import Config
+from vyos.util import ConfigError
+
+config_file = r'/etc/default/mdns-repeater'
+
+def get_config():
+ interface_list = []
+
+ conf = Config()
+ conf.set_level('service mdns repeater')
+ if not conf.exists(''):
+ return interface_list
+
+ if conf.exists('interfaces'):
+ intfs_names = conf.return_values('interfaces')
+ intfs_names=intfs_names.replace("'", "")
+ intfs_names=intfs_names.split()
+
+ for name in intfs_names:
+ interface_list.append(name)
+
+ return interface_list
+
+def verify(mdns):
+ # '0' interfaces are possible, think of service deletion. Only '1' is not supported!
+ if len(mdns) == 1:
+ raise ConfigError('At least 2 interfaces must be specified but %d given!' % len(mdns))
+
+ # For mdns-repeater to work it is essential that the interfaces
+ # have an IP address assigned
+ for intf in mdns:
+ try:
+ netifaces.ifaddresses(intf)[netifaces.AF_INET]
+ except KeyError as e:
+ raise ConfigError('No IP address configured for interface "%s"!' % intf)
+
+ return None
+
+def generate(mdns):
+ config_header = '### Autogenerated by vyos-update-mdns-repeater.py on {tm} ###\n'.format(tm=time.strftime("%a, %d %b %Y %H:%M:%S", time.localtime()))
+ if len(mdns) > 0:
+ config_args = 'DAEMON_ARGS="' + ' '.join(str(e) for e in mdns) + '"\n'
+ else:
+ config_args = 'DAEMON_ARGS=""\n'
+
+ # write new configuration file
+ f = open(config_file, 'w')
+ f.write(config_header)
+ f.write(config_args)
+ f.close()
+
+ return None
+
+def apply(mdns):
+ systemd_cmd = ["sudo", "service", "mdns-repeater"]
+
+ if len(mdns) == 0:
+ systemd_cmd.append("stop")
+ else:
+ systemd_cmd.append("restart")
+
+ subprocess.call(systemd_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)