60 lines
2.7 KiB
Python
Executable File
60 lines
2.7 KiB
Python
Executable File
#!/usr/local/bin/python3
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"""
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Copyright (c) 2019 Ad Schellevis <ad@opnsense.org>
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All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright
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notice, this list of conditions and the following disclaimer in the
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documentation and/or other materials provided with the distribution.
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THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES,
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INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
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AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY,
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OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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POSSIBILITY OF SUCH DAMAGE.
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--------------------------------------------------------------------------------------
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manually delete a static route, when found in the routing table (by number or name)
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"""
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import subprocess
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import sys
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import ujson
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import argparse
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if __name__ == '__main__':
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# parse input arguments
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parser = argparse.ArgumentParser()
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parser.add_argument('--destination', help='destination', required=True)
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parser.add_argument('--gateway', help='gateway', required=True)
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inputargs = parser.parse_args()
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for flags in ['-rWn', '-rW']:
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sp = subprocess.run(['/usr/bin/netstat', flags], capture_output=True, text=True)
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for line in sp.stdout.split("\n"):
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parts = line.split()
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if len(parts) > 2 and parts[0] == inputargs.destination and parts[1] == inputargs.gateway:
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# route entry found, try to delete
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print ("found")
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inet = '-6' if parts[0].find(':') > 0 else '-4'
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if len(parts[1].replace(':', '')) == 12 and parts[1].count(':') == 5:
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# gateway is a mac address, remove entry directly assigned to an interface
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subprocess.run(['/sbin/route', inet, 'delete', parts[0]], capture_output=True)
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else:
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subprocess.run(['/sbin/route', inet, 'delete', parts[0], parts[1]], capture_output=True)
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sys.exit(0)
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# not found
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print ("not_found")
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