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authorChristian Breunig <christian@breunig.cc>2023-12-30 23:25:20 +0100
committerChristian Breunig <christian@breunig.cc>2023-12-31 23:49:48 +0100
commit4ef110fd2c501b718344c72d495ad7e16d2bd465 (patch)
treee98bf08f93c029ec4431a3b6ca078e7562e0cc58 /src/conf_mode/service_dhcp-relay.py
parent2286b8600da6c631b17e1d5b9b341843e50f9abf (diff)
downloadvyos-1x-4ef110fd2c501b718344c72d495ad7e16d2bd465.tar.gz
vyos-1x-4ef110fd2c501b718344c72d495ad7e16d2bd465.zip
T5474: establish common file name pattern for XML conf mode commands
We will use _ as CLI level divider. The XML definition filename and also the Python helper should match the CLI node. Example: set interfaces ethernet -> interfaces_ethernet.xml.in set interfaces bond -> interfaces_bond.xml.in set service dhcp-server -> service_dhcp-server-xml.in
Diffstat (limited to 'src/conf_mode/service_dhcp-relay.py')
-rwxr-xr-xsrc/conf_mode/service_dhcp-relay.py104
1 files changed, 104 insertions, 0 deletions
diff --git a/src/conf_mode/service_dhcp-relay.py b/src/conf_mode/service_dhcp-relay.py
new file mode 100755
index 000000000..37d708847
--- /dev/null
+++ b/src/conf_mode/service_dhcp-relay.py
@@ -0,0 +1,104 @@
+#!/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 vyos.base import Warning
+from vyos.config import Config
+from vyos.template import render
+from vyos.base import Warning
+from vyos.utils.process import call
+from vyos.utils.dict import dict_search
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+config_file = r'/run/dhcp-relay/dhcrelay.conf'
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['service', 'dhcp-relay']
+ if not conf.exists(base):
+ return None
+
+ relay = conf.get_config_dict(base, key_mangling=('-', '_'),
+ get_first_key=True,
+ with_recursive_defaults=True)
+
+ return relay
+
+def verify(relay):
+ # bail out early - looks like removal from running config
+ if not relay or 'disable' in relay:
+ return None
+
+ if 'lo' in (dict_search('interface', relay) or []):
+ raise ConfigError('DHCP relay does not support the loopback interface.')
+
+ if 'server' not in relay :
+ raise ConfigError('No DHCP relay server(s) configured.\n' \
+ 'At least one DHCP relay server required.')
+
+ if 'interface' in relay:
+ Warning('DHCP relay interface is DEPRECATED - please use upstream-interface and listen-interface instead!')
+ if 'upstream_interface' in relay or 'listen_interface' in relay:
+ raise ConfigError('<interface> configuration is not compatible with upstream/listen interface')
+ else:
+ Warning('<interface> is going to be deprecated.\n' \
+ 'Please use <listen-interface> and <upstream-interface>')
+
+ if 'upstream_interface' in relay and 'listen_interface' not in relay:
+ raise ConfigError('No listen-interface configured')
+ if 'listen_interface' in relay and 'upstream_interface' not in relay:
+ raise ConfigError('No upstream-interface configured')
+
+ return None
+
+def generate(relay):
+ # bail out early - looks like removal from running config
+ if not relay or 'disable' in relay:
+ return None
+
+ render(config_file, 'dhcp-relay/dhcrelay.conf.j2', relay)
+ return None
+
+def apply(relay):
+ # bail out early - looks like removal from running config
+ service_name = 'isc-dhcp-relay.service'
+ if not relay or 'disable' in relay:
+ call(f'systemctl stop {service_name}')
+ if os.path.exists(config_file):
+ os.unlink(config_file)
+ return None
+
+ call(f'systemctl restart {service_name}')
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)