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authorChristian Breunig <christian@breunig.cc>2023-12-30 23:25:20 +0100
committerChristian Breunig <christian@breunig.cc>2024-01-01 09:25:32 +0100
commitc9eaafd9f808aba8d29be73054e11d37577e539a (patch)
treeaeccfda0a305cf6aca41630900e75bd32961a911 /src/conf_mode/service_ids_ddos-protection.py
parent2078253176046ea4d07e69caeb7932ea439b5614 (diff)
downloadvyos-1x-c9eaafd9f808aba8d29be73054e11d37577e539a.tar.gz
vyos-1x-c9eaafd9f808aba8d29be73054e11d37577e539a.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 (cherry picked from commit 4ef110fd2c501b718344c72d495ad7e16d2bd465)
Diffstat (limited to 'src/conf_mode/service_ids_ddos-protection.py')
-rwxr-xr-xsrc/conf_mode/service_ids_ddos-protection.py104
1 files changed, 104 insertions, 0 deletions
diff --git a/src/conf_mode/service_ids_ddos-protection.py b/src/conf_mode/service_ids_ddos-protection.py
new file mode 100755
index 000000000..276a71fcb
--- /dev/null
+++ b/src/conf_mode/service_ids_ddos-protection.py
@@ -0,0 +1,104 @@
+#!/usr/bin/env python3
+#
+# Copyright (C) 2018-2023 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.config import Config
+from vyos.template import render
+from vyos.utils.process import call
+from vyos import ConfigError
+from vyos import airbag
+airbag.enable()
+
+config_file = r'/run/fastnetmon/fastnetmon.conf'
+networks_list = r'/run/fastnetmon/networks_list'
+excluded_networks_list = r'/run/fastnetmon/excluded_networks_list'
+attack_dir = '/var/log/fastnetmon_attacks'
+
+def get_config(config=None):
+ if config:
+ conf = config
+ else:
+ conf = Config()
+ base = ['service', 'ids', 'ddos-protection']
+ if not conf.exists(base):
+ return None
+
+ fastnetmon = conf.get_config_dict(base, key_mangling=('-', '_'),
+ get_first_key=True,
+ with_recursive_defaults=True)
+
+ return fastnetmon
+
+def verify(fastnetmon):
+ if not fastnetmon:
+ return None
+
+ if 'mode' not in fastnetmon:
+ raise ConfigError('Specify operating mode!')
+
+ if fastnetmon.get('mode') == 'mirror' and 'listen_interface' not in fastnetmon:
+ raise ConfigError("Incorrect settings for 'mode mirror': must specify interface(s) for traffic mirroring")
+
+ if fastnetmon.get('mode') == 'sflow' and 'listen_address' not in fastnetmon.get('sflow', {}):
+ raise ConfigError("Incorrect settings for 'mode sflow': must specify sFlow 'listen-address'")
+
+ if 'alert_script' in fastnetmon:
+ if os.path.isfile(fastnetmon['alert_script']):
+ # Check script permissions
+ if not os.access(fastnetmon['alert_script'], os.X_OK):
+ raise ConfigError('Script "{alert_script}" is not executable!'.format(fastnetmon['alert_script']))
+ else:
+ raise ConfigError('File "{alert_script}" does not exists!'.format(fastnetmon))
+
+def generate(fastnetmon):
+ if not fastnetmon:
+ for file in [config_file, networks_list]:
+ if os.path.isfile(file):
+ os.unlink(file)
+
+ return None
+
+ # Create dir for log attack details
+ if not os.path.exists(attack_dir):
+ os.mkdir(attack_dir)
+
+ render(config_file, 'ids/fastnetmon.j2', fastnetmon)
+ render(networks_list, 'ids/fastnetmon_networks_list.j2', fastnetmon)
+ render(excluded_networks_list, 'ids/fastnetmon_excluded_networks_list.j2', fastnetmon)
+ return None
+
+def apply(fastnetmon):
+ systemd_service = 'fastnetmon.service'
+ if not fastnetmon:
+ # Stop fastnetmon service if removed
+ call(f'systemctl stop {systemd_service}')
+ else:
+ call(f'systemctl reload-or-restart {systemd_service}')
+
+ return None
+
+if __name__ == '__main__':
+ try:
+ c = get_config()
+ verify(c)
+ generate(c)
+ apply(c)
+ except ConfigError as e:
+ print(e)
+ exit(1)