"""
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 .
Copyright © 2019 Cloud Linux Software Inc.
This software is also available under ImunifyAV commercial license,
see
"""
import base64
import json
import os
import time
from defence360agent.contracts.config import Malware, MalwareSignatures
from defence360agent.contracts.hook_events import HookEvent
from defence360agent.internals.global_scope import g
from defence360agent.utils import resource_limits
from imav.malwarelib.config import (
AIBOLIT_SCAN_INTENSITY_KEY,
MalwareScanResourceType,
)
from imav.malwarelib.model import MalwareIgnorePath
from imav.malwarelib.scan.mds import MDS_PATH
from imav.malwarelib.scan.mds.detached import MDSDetachedScanDir
from imav.malwarelib.utils import get_memory
class MalwareDatabaseScanner:
def __init__(
self,
initial_path,
paths,
intensity_cpu,
intensity_io,
intensity_ram,
scan_type,
scan_id,
**_,
):
self.scan_id = scan_id
self.initial_path = initial_path
self.paths = paths
self.intensity_cpu = intensity_cpu
self.intensity_io = intensity_io
self.intensity_ram = intensity_ram
self.scan_type = scan_type
def _cmd(self, work_dir):
return [
"/opt/ai-bolit/wrapper",
MDS_PATH,
"--scan",
"--path",
self.paths[0], # TODO: use whole list of files
"--avdb",
MalwareSignatures.MDS_AI_BOLIT_HOSTER,
"--report-file",
str(work_dir.report_file),
"--detached",
self.scan_id,
"--progress",
str(work_dir.progress_file),
"--ignore-list",
str(work_dir.ignore_file),
"--procudb",
MalwareSignatures.MDS_PROCU_DB,
"--memory",
get_memory(self.intensity_ram),
"--db-timeout",
str(Malware.MDS_DB_TIMEOUT),
]
async def scan(self, started=None):
with MDSDetachedScanDir(self.scan_id) as work_dir:
work_dir.ignore_file.write_bytes(
b"\n".join(
base64.b64encode(os.fsencode(path))
for path in MalwareIgnorePath.path_list(
resource_type=MalwareScanResourceType.DB.value
)
)
)
cmd = self._cmd(work_dir)
scan_info = {
"cmd": cmd,
"initial_path": self.initial_path,
"scan_type": self.scan_type,
}
with work_dir.scan_info_file.open(mode="w") as fp:
json.dump(scan_info, fp)
with work_dir.log_file.open(
mode="w"
) as l_f, work_dir.err_file.open(mode="w") as e_f:
scan_started_event = HookEvent.MalwareScanningStarted(
scan_id=self.scan_id,
scan_type=self.scan_type,
path=self.initial_path,
started=started or time.time(),
)
await g.sink.process_message(scan_started_event)
await resource_limits.create_subprocess(
cmd,
intensity_cpu=self.intensity_cpu,
intensity_io=self.intensity_io,
start_new_session=True,
stdout=l_f,
stderr=e_f,
cwd=str(work_dir),
key=AIBOLIT_SCAN_INTENSITY_KEY[self.scan_type],
)