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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 hashlib
import logging
import uuid
from typing import cast
from defence360agent.contracts.config import Malware, MalwareScanIntensity
from defence360agent.internals.the_sink import TheSink
from defence360agent.utils import resource_limits
from imav.contracts.messages import MalwareDatabaseRestoreTask
from imav.malwarelib.cleanup.types import CleanupRevertInitiator
from imav.malwarelib.config import (
RESTORE_ORIGINAL_INTENSITY_KEY,
MalwareScanResourceType,
)
from imav.malwarelib.model import MalwareHit
from imav.malwarelib.scan.mds import MDS_PATH
from imav.malwarelib.scan.mds.detached import MDSDetachedRestoreDir
from imav.malwarelib.utils import hash_path
logger = logging.getLogger(__name__)
class MalwareDatabaseRestore:
def __init__(
self,
*,
app_name: str,
path: str,
signature_id: str | None = None,
restore_id: str | None = None,
):
self.app_name = app_name
self.path = path
self.signature_id = signature_id
self.restore_id = restore_id or uuid.uuid4().hex
def cmd(self, work_dir: MDSDetachedRestoreDir):
command = [
"/opt/ai-bolit/wrapper",
MDS_PATH,
"--path",
self.path,
"--app-name",
self.app_name,
"--report-file",
str(work_dir.report_file),
"--detached",
self.restore_id,
"--progress",
str(work_dir.progress_file),
"--db-timeout",
str(Malware.MDS_DB_TIMEOUT),
]
if self.signature_id:
command += ["--restore-sig-id", self.signature_id]
else:
command += ["--restore", storage_path(self.path, self.app_name)]
return command
async def restore(self):
with MDSDetachedRestoreDir(self.restore_id) as work_dir:
cmd = self.cmd(work_dir)
with (
work_dir.log_file.open(mode="w") as l_f,
work_dir.err_file.open(mode="w") as e_f,
):
logger.info("Running MDS Restore with: %s", cmd)
await resource_limits.create_subprocess(
cmd,
intensity_cpu=MalwareScanIntensity.CPU,
intensity_io=MalwareScanIntensity.IO,
start_new_session=True,
stdout=l_f,
stderr=e_f,
cwd=str(work_dir),
key=RESTORE_ORIGINAL_INTENSITY_KEY,
)
def storage_path(path: str, app_name: str):
return "/var/imunify360/cleanup_storage/" + hash_path(
path + app_name, hash_provider=hashlib.sha384
)
async def restore_hits(
hits: list[MalwareHit],
sink: TheSink,
initiator: CleanupRevertInitiator | None = None,
):
db_hits = [
hit
for hit in hits
if hit.resource_type == MalwareScanResourceType.DB.value
]
hit: MalwareHit
for hit in db_hits:
await sink.process_message(
MalwareDatabaseRestoreTask(
path=cast(str, hit.orig_file),
app_name=cast(str, hit.app_name),
signature_id=hit.signature_id
if initiator == CleanupRevertInitiator.IMUNIFY
else None,
)
)