115 lines · python
1#!/usr/bin/env python32# SPDX-License-Identifier: GPL-2.0 OR BSD-3-Clause3 4import argparse5import json6import pprint7import time8 9from lib import YnlFamily, Netlink, NlError10 11 12class YnlEncoder(json.JSONEncoder):13 def default(self, obj):14 if isinstance(obj, bytes):15 return bytes.hex(obj)16 if isinstance(obj, set):17 return list(obj)18 return json.JSONEncoder.default(self, obj)19 20 21def main():22 description = """23 YNL CLI utility - a general purpose netlink utility that uses YAML24 specs to drive protocol encoding and decoding.25 """26 epilog = """27 The --multi option can be repeated to include several do operations28 in the same netlink payload.29 """30 31 parser = argparse.ArgumentParser(description=description,32 epilog=epilog)33 parser.add_argument('--spec', dest='spec', type=str, required=True)34 parser.add_argument('--schema', dest='schema', type=str)35 parser.add_argument('--no-schema', action='store_true')36 parser.add_argument('--json', dest='json_text', type=str)37 38 group = parser.add_mutually_exclusive_group()39 group.add_argument('--do', dest='do', metavar='DO-OPERATION', type=str)40 group.add_argument('--multi', dest='multi', nargs=2, action='append',41 metavar=('DO-OPERATION', 'JSON_TEXT'), type=str)42 group.add_argument('--dump', dest='dump', metavar='DUMP-OPERATION', type=str)43 group.add_argument('--list-ops', action='store_true')44 group.add_argument('--list-msgs', action='store_true')45 46 parser.add_argument('--sleep', dest='sleep', type=int)47 parser.add_argument('--subscribe', dest='ntf', type=str)48 parser.add_argument('--replace', dest='flags', action='append_const',49 const=Netlink.NLM_F_REPLACE)50 parser.add_argument('--excl', dest='flags', action='append_const',51 const=Netlink.NLM_F_EXCL)52 parser.add_argument('--create', dest='flags', action='append_const',53 const=Netlink.NLM_F_CREATE)54 parser.add_argument('--append', dest='flags', action='append_const',55 const=Netlink.NLM_F_APPEND)56 parser.add_argument('--process-unknown', action=argparse.BooleanOptionalAction)57 parser.add_argument('--output-json', action='store_true')58 parser.add_argument('--dbg-small-recv', default=0, const=4000,59 action='store', nargs='?', type=int)60 args = parser.parse_args()61 62 def output(msg):63 if args.output_json:64 print(json.dumps(msg, cls=YnlEncoder))65 else:66 pprint.PrettyPrinter().pprint(msg)67 68 if args.no_schema:69 args.schema = ''70 71 attrs = {}72 if args.json_text:73 attrs = json.loads(args.json_text)74 75 ynl = YnlFamily(args.spec, args.schema, args.process_unknown,76 recv_size=args.dbg_small_recv)77 if args.dbg_small_recv:78 ynl.set_recv_dbg(True)79 80 if args.ntf:81 ynl.ntf_subscribe(args.ntf)82 83 if args.sleep:84 time.sleep(args.sleep)85 86 if args.list_ops:87 for op_name, op in ynl.ops.items():88 print(op_name, " [", ", ".join(op.modes), "]")89 if args.list_msgs:90 for op_name, op in ynl.msgs.items():91 print(op_name, " [", ", ".join(op.modes), "]")92 93 try:94 if args.do:95 reply = ynl.do(args.do, attrs, args.flags)96 output(reply)97 if args.dump:98 reply = ynl.dump(args.dump, attrs)99 output(reply)100 if args.multi:101 ops = [ (item[0], json.loads(item[1]), args.flags or []) for item in args.multi ]102 reply = ynl.do_multi(ops)103 output(reply)104 except NlError as e:105 print(e)106 exit(1)107 108 if args.ntf:109 ynl.check_ntf()110 output(ynl.async_msg_queue)111 112 113if __name__ == "__main__":114 main()115