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# Copyright 2025 VyOS maintainers and contributors <maintainers@vyos.io>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with this library. If not, see <http://www.gnu.org/licenses/>.
import socket
from dataclasses import asdict
from vyos.proto import vyconf_proto
from vyos.proto import vyconf_pb2
from google.protobuf.json_format import MessageToDict
from google.protobuf.json_format import ParseDict
socket_path = '/var/run/vyconfd.sock'
def send_socket(msg: bytearray) -> bytes:
data = bytes()
client = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
client.connect(socket_path)
client.sendall(msg)
data_length = client.recv(4)
if data_length:
length = int.from_bytes(data_length)
data = client.recv(length)
client.close()
return data
def request_to_msg(req: vyconf_proto.RequestEnvelope) -> vyconf_pb2.RequestEnvelope:
# pylint: disable=no-member
msg = vyconf_pb2.RequestEnvelope()
msg = ParseDict(asdict(req), msg, ignore_unknown_fields=True)
return msg
def msg_to_response(msg: vyconf_pb2.Response) -> vyconf_proto.Response:
# pylint: disable=no-member
d = MessageToDict(
msg, preserving_proto_field_name=True, use_integers_for_enums=True
)
response = vyconf_proto.Response(**d)
return response
def write_request(req: vyconf_proto.RequestEnvelope) -> bytearray:
req_msg = request_to_msg(req)
encoded_data = req_msg.SerializeToString()
byte_size = req_msg.ByteSize()
length_bytes = byte_size.to_bytes(4)
arr = bytearray(length_bytes)
arr.extend(encoded_data)
return arr
def read_response(msg: bytes) -> vyconf_proto.Response:
response_msg = vyconf_pb2.Response() # pylint: disable=no-member
response_msg.ParseFromString(msg)
response = msg_to_response(response_msg)
return response
def send_request(name, *args, **kwargs):
func = getattr(vyconf_proto, f'set_request_{name}')
request_env = func(*args, **kwargs)
msg = write_request(request_env)
response_msg = send_socket(msg)
response = read_response(response_msg)
return response
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