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# SPDX-License-Identifier: GPL-2.0
import os
import shlex
from pathlib import Path
from lib.py import ip
from lib.py import NetdevSimDev
class NetDrvEnv:
def __init__(self, src_path):
self._ns = None
self.env = os.environ.copy()
self._load_env_file(src_path)
if 'NETIF' in self.env:
self.dev = ip("link show dev " + self.env['NETIF'], json=True)[0]
else:
self._ns = NetdevSimDev()
self.dev = self._ns.nsims[0].dev
self.ifindex = self.dev['ifindex']
def __enter__(self):
return self
def __exit__(self, ex_type, ex_value, ex_tb):
"""
__exit__ gets called at the end of a "with" block.
"""
self.__del__()
def __del__(self):
if self._ns:
self._ns.remove()
self._ns = None
def _load_env_file(self, src_path):
src_dir = Path(src_path).parent.resolve()
if not (src_dir / "net.config").exists():
return
lexer = shlex.shlex(open((src_dir / "net.config").as_posix(), 'r').read())
k = None
for token in lexer:
if k is None:
k = token
self.env[k] = ""
elif token == "=":
pass
else:
self.env[k] = token
k = None
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