%PDF-
%PDF-
Mini Shell
Mini Shell
"""
This program is free software: you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
This program 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Copyright © 2019 Cloud Linux Software Inc.
This software is also available under ImunifyAV commercial license,
see <https://www.imunify360.com/legal/eula>
"""
import asyncio
import itertools
import logging
import time
from typing import Dict, Iterator, List, Optional, Tuple
from imav.malwarelib.scan import ScanFailedError
from defence360agent.contracts.config import Core as Config
from defence360agent.contracts.messages import MessageType
from .ai_bolit.scanner import AiBolit
from .scan_result import DirectAiBolit, PrepareFileList, ScanResult, event_hook
logger = logging.getLogger(__name__)
class MalwareScanner:
def __init__(self, tmpdir=None, sink=None, hooks=False):
self._tmpdir = tmpdir or Config.TMPDIR
self._sink = sink
self._hooks = hooks
self.aibolit = None
self._task = None
self._loop = asyncio.get_event_loop()
self._tmpdir = tmpdir
self._current_task = None
self._future_result = None
self._is_running = asyncio.Lock()
def start(self, path, *args, **kwargs):
self._future_result = asyncio.Future()
self._task = self._loop.create_task(self._start(path, *args, **kwargs))
return self._task
def wait(self):
if self._future_result is None:
raise asyncio.exceptions.InvalidStateError("Need to start action")
self._loop.run_until_complete(self._future_result)
return self._future_result.result()
async def async_wait(self):
if self._future_result is None:
raise asyncio.exceptions.InvalidStateError("Need to start action")
await self._future_result
return self._future_result.result()
def stop(self):
if self.status():
self._task.cancel()
def status(self):
return self._is_running.locked()
async def _start(self, path, *args, **kwargs):
async with self._is_running:
try:
execute_scan = self._execute_scan
if self._hooks:
execute_scan = event_hook(self._sink)(execute_scan)
result = await execute_scan(path, *args, **kwargs)
except asyncio.CancelledError:
self._future_result.set_result(None)
except Exception as e:
self._future_result.set_exception(e)
else:
self._future_result.set_result(result)
async def _send_scan_failed_message(self, e):
if self._sink:
try:
msg = MessageType.ScanFailed()
msg["exception"] = e.__class__.__name__
if isinstance(e, ScanFailedError):
msg["return_code"] = e.return_code
msg["command"] = e.command
msg["out"] = e.out
msg["err"] = e.err
msg["message"] = e.message
msg["path"] = e.path
msg["scan_id"] = e.scan_id
else:
msg["message"] = str(e)
await self._sink.process_message(msg)
except asyncio.CancelledError:
raise
except Exception:
logger.exception("Exception while sending ScanFailed message")
async def _execute_scan(self, path, *args, **kwargs):
logger.info("Scan started")
files_provider = (
DirectAiBolit if isinstance(path, str) else PrepareFileList
)
prepare_file_list = files_provider(self._tmpdir)
kwargs["begin_time"] = time.time()
execute_scan = prepare_file_list(self._run_aibolit)
result = await execute_scan(path, *args, **kwargs)
assert isinstance(result, ScanResult)
end_time = None if result.is_detached() else time.time()
result.set_start_stop(end_time=end_time)
if result.is_detached():
return result.to_dict_initial()
else:
if self.aibolit and self.aibolit.cmd:
result.args = self.aibolit.cmd
return result.to_dict()
async def _run_aibolit(
self, file: Optional[str], **scan_options
) -> Tuple[List[Iterator[Dict]], Optional[str]]:
"""
:param file: file with list of files, that should be scanned
:param scan_options: some options for the scan
:return: parse report iterator and error
"""
iterators = []
error = None
self.aibolit = AiBolit()
scan = self.aibolit.scan
try:
self._current_task = scan
try:
iterator = await scan(file, **scan_options)
except asyncio.CancelledError:
# all over here, task is cancelled, passing exc up
raise
except ScanFailedError as e:
await self._send_scan_failed_message(e)
logger.exception("Scan failed with ScanFailed exception")
iterator = []
error = e.message
except Exception as e:
await self._send_scan_failed_message(e)
logger.exception("Scan failed with ordinary exception")
iterator = []
error = repr(e)
# copy iterator
result, _ = itertools.tee(iterator)
iterators.append(result)
finally:
self._current_task = None
return iterators, error
Zerion Mini Shell 1.0