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-rwxr-xr-xsrc/helpers/vyos-event-handler.py55
1 files changed, 55 insertions, 0 deletions
diff --git a/src/helpers/vyos-event-handler.py b/src/helpers/vyos-event-handler.py
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+++ b/src/helpers/vyos-event-handler.py
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+#!/usr/bin/env python3
+#
+# Copyright (C) 2022 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 argparse
+import select
+import re
+import json
+
+from sys import argv
+from os import getpid
+from systemd import journal
+from vyos.util import call
+
+
+parser = argparse.ArgumentParser()
+parser.add_argument("-c", "--config", action="store", help="Path to even-handler configuration", required=True)
+
+args = parser.parse_args()
+config = args.config
+data = journal.Reader()
+data.seek_tail()
+data.get_previous()
+p = select.poll()
+p.register(data, data.get_events())
+my_pid = getpid()
+
+with open(config, 'r') as f:
+ config = json.load(f)
+
+
+if __name__ == '__main__':
+ while p.poll():
+ if data.process() != journal.APPEND:
+ continue
+ for entry in data:
+ message = entry['MESSAGE']
+ for name, event_config in config.items():
+ pattern = re.compile(rf'{event_config["pattern"]}')
+ script = event_config['script']
+ if message != "" and entry['_PID'] != my_pid and pattern.match(message):
+ call(script)
+ journal.send(f'Pattern found: {event_config["pattern"]}, script executed: {script}')