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Edit File: remote_patch_revert.py

"""
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/>.

This software is also available under ImunifyAV commercial license,
see <https://www.imunify360.com/legal/eula>
"""
import asyncio
import time
from contextlib import suppress
from pathlib import Path

from defence360agent.api.server.cleanup_revert import (
    CleanupRevertAPI as PatchRevertAPI,
)
from defence360agent.contracts.config import Core
from defence360agent.contracts.permissions import (
    ms_imunify_patch_eligible_to_purchase,
)
from defence360agent.contracts.plugins import MessageSource
from imav.malwarelib.vulnerabilities.storage import restore_hits
from imav.malwarelib.config import VulnerabilityHitStatus
from imav.malwarelib.model import VulnerabilityHit
from defence360agent.utils import recurring_check

PERIOD = 3 * 60 * 60  # 3 hours

class PatchRevertPlugin(MessageSource):
    def __init__(self):
        self._patch_revert_flag = Path(Core.TMPDIR) / "patch_revert"
        self.initiator = "imunify"
        self._task = None

async def create_source(self, loop, sink):
        self._sink = sink
        self._task = loop.create_task(
            recurring_check(PERIOD)(self.process_patch_revert)()
        )

async def shutdown(self):
        if self._task:
            self._task.cancel()
            with suppress(asyncio.CancelledError):
                await self._task

async def process_patch_revert(self):
        if not ms_imunify_patch_eligible_to_purchase():
            return

if (
            self._patch_revert_flag.exists()
            and (self._patch_revert_flag.stat().st_mtime + PERIOD)
            > time.time()
        ):  # don't try to make requests too often
            return

if files := await PatchRevertAPI.paths():
            if hits := list(
                VulnerabilityHit.get_hits(
                    files, statuses=[VulnerabilityHitStatus.PATCHED]
                )
            ):
                await restore_hits(hits, self.initiator)

self._patch_revert_flag.touch(mode=0o644, exist_ok=True)

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