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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 <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 logging
from pathlib import Path
from defence360agent.contracts.hook_events import HookEvent
from defence360agent.contracts.plugins import MessageSink, expect
from imav.malwarelib.config import MalwareScanType
from imav.malwarelib.utils.user_list import panel_users
from defence360agent.subsys import notifier
logger = logging.getLogger(__name__)
async def trigger_event(event_id: str, user: str, body: dict):
try:
await notifier.trigger_event(event_id, user, body)
except Exception as e:
logger.error("Failed to trigger an event '%s': %r", event_id, e)
async def trigger_scan_event(
path: str,
scan_id: str,
scan_type: str,
custom_event_id: str,
user_event_id: str,
**kwargs
):
if scan_type == MalwareScanType.ON_DEMAND:
user = ""
event_id = custom_event_id
elif scan_type in (MalwareScanType.BACKGROUND, MalwareScanType.USER):
user = next(
(
u["user"]
for u in await panel_users()
if Path(path) == Path(u["home"])
),
"",
)
event_id = user_event_id
else:
return
await trigger_event(
event_id,
user,
{"scan_id": scan_id, "path": path, **kwargs},
)
class EventHooks(MessageSink):
async def create_sink(self, loop):
self._loop = loop
@expect(HookEvent.MalwareDetectedCritical)
async def malware_found(self, event):
scan_type = event["scan_type"]
if scan_type == MalwareScanType.ON_DEMAND:
event_id = notifier.CUSTOM_SCAN_MALWARE_FOUND_EVENT_ID
elif scan_type in (MalwareScanType.BACKGROUND, MalwareScanType.USER):
event_id = notifier.USER_SCAN_MALWARE_FOUND_EVENT_ID
else:
return
users = {hit["username"] for hit in event["DUMP"]}
for user in users:
await trigger_event(event_id, user, {"scan_id": event["scan_id"]})
@expect(HookEvent.MalwareScanningStarted)
async def scan_started(self, event):
await trigger_scan_event(
event["path"],
event["scan_id"],
event["scan_type"],
notifier.CUSTOM_SCAN_STARTED_EVENT_ID,
notifier.USER_SCAN_STARTED_EVENT_ID,
started=event["started"],
)
@expect(HookEvent.MalwareScanningFinished)
async def scan_finished(self, event):
await trigger_scan_event(
event["path"],
event["scan_id"],
event["scan_type"],
notifier.CUSTOM_SCAN_FINISHED_EVENT_ID,
notifier.USER_SCAN_FINISHED_EVENT_ID,
)