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ip/routel
62 строки
2 KB
Stephen Hemminger
ip: rewrite routel in python
07 сен 2021, 01:31
07 сен 2021, 01:31
6d676ad
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#! /usr/bin/env python3 # SPDX-License-Identifier: GPL-2.0 # # This is simple script to process JSON output from ip route # command and format it. Based on earlier shell script version. """Script to parse ip route output into more readable text.""" import sys import json import getopt import subprocess def usage(): '''Print usage and exit''' print("Usage: {} [tablenr [raw ip args...]]".format(sys.argv[0])) sys.exit(64) def main(): '''Process the arguments''' family = 'inet' try: opts, args = getopt.getopt(sys.argv[1:], "h46f:", ["help", "family="]) except getopt.GetoptError as err: print(err) usage() for opt, arg in opts: if opt in ["-h", "--help"]: usage() elif opt == '-6': family = 'inet6' elif opt == "-4": family = 'inet' elif opt in ["-f", "--family"]: family = arg else: assert False, "unhandled option" if not args: args = ['0'] cmd = ['ip', '-f', family, '-j', 'route', 'list', 'table'] + args process = subprocess.Popen(cmd, stdout=subprocess.PIPE) tbl = json.load(process.stdout) if family == 'inet': fmt = '{:15} {:15} {:15} {:8} {:8}{:<16} {}' else: fmt = '{:32} {:32} {:32} {:8} {:8}{:<16} {}' # ip route json keys keys = ['dst', 'gateway', 'prefsrc', 'protocol', 'scope', 'dev', 'table'] print(fmt.format(*map(lambda x: x.capitalize(), keys))) for record in tbl: fields = [record[k] if k in record else '' for k in keys] print(fmt.format(*fields)) if __name__ == "__main__": main()