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authorChristian Poessinger <christian@poessinger.com>2021-05-25 21:53:54 +0200
committerChristian Poessinger <christian@poessinger.com>2021-05-27 08:30:51 +0200
commit5eadedcc1e5c40da81031b77b8965baa3087e2b3 (patch)
tree5883c10b79ed394a79c6e332d022976be1459f6d /src/conf_mode/conntrack.py
parentd12f945d24fd9098e69620d84699b61bd7838c99 (diff)
downloadvyos-1x-5eadedcc1e5c40da81031b77b8965baa3087e2b3.tar.gz
vyos-1x-5eadedcc1e5c40da81031b77b8965baa3087e2b3.zip
conntrack: T3579: initial implementation with XML and Python
Diffstat (limited to 'src/conf_mode/conntrack.py')
-rwxr-xr-xsrc/conf_mode/conntrack.py83
1 files changed, 83 insertions, 0 deletions
diff --git a/src/conf_mode/conntrack.py b/src/conf_mode/conntrack.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2021 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/>.
+
+from sys import exit
+
+from vyos.config import Config
+from vyos.configdict import dict_merge
+from vyos.util import cmd
+from vyos.util import run
+from vyos.util import process_named_running
+from vyos.template import render
+from vyos.xml import defaults
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+conntrack_config = r'/etc/modprobe.d/vyatta_nf_conntrack.conf'
+sysctl_file = r'/run/sysctl/10-vyos-conntrack.conf'
+
+def resync_conntrackd():
+ tmp = run('/usr/libexec/vyos/conf_mode/conntrack_sync.py')
+ if tmp > 0:
+ print('ERROR: error restarting conntrackd!')
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['system', 'conntrack']
+
+ conntrack = conf.get_config_dict(base, key_mangling=('-', '_'),
+ get_first_key=True)
+
+ # We have gathered the dict representation of the CLI, but there are default
+ # options which we need to update into the dictionary retrived.
+ default_values = defaults(base)
+ conntrack = dict_merge(default_values, conntrack)
+
+ return conntrack
+
+def verify(conntrack):
+ return None
+
+def generate(conntrack):
+ render(conntrack_config, 'conntrack/vyos_nf_conntrack.conf.tmpl', conntrack)
+ render(sysctl_file, 'conntrack/sysctl.conf.tmpl', conntrack)
+
+ return None
+
+def apply(conntrack):
+ if process_named_running('conntrackd'):
+ # Reload conntrack-sync daemon to fetch new sysctl values
+ resync_conntrackd()
+
+ # We silently ignore all errors
+ # See: https://bugzilla.redhat.com/show_bug.cgi?id=1264080
+ cmd(f'sysctl -f {sysctl_file}')
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)