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Edit File: plesk_notifications.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 logging
from functools import lru_cache
from pathlib import Path

from defence360agent.contracts.plugins import MessageSink
from defence360agent.contracts.hooks import HooksConfig
from defence360agent.subsys import notifier

logger = logging.getLogger(__name__)

SCRIPT_PATH = (
    "/opt/psa/admin/plib/modules/imunify360/scripts/send-notifications.php"
)
HOOK_PATH = "/opt/imunify360/venv/share/imunify360/scripts/send-notifications"
EVENTS = [
    "CUSTOM_SCAN_MALWARE_FOUND",
    "USER_SCAN_MALWARE_FOUND",
    "REALTIME_MALWARE_FOUND",
]

class PleskNotificationsHooks(MessageSink):
    async def create_sink(self, loop):
        """MessageSink method"""
        if self.is_supported():
            if not self.is_applied():
                await self.add_hooks()
        else:
            await self.remove_hooks()

@lru_cache(maxsize=1)
    def is_supported(self) -> bool:
        return Path(SCRIPT_PATH).exists() and Path(HOOK_PATH).exists()

def is_applied(self) -> bool:
        config = HooksConfig().get()
        return all(
            [
                HOOK_PATH in rule["SCRIPT"]["scripts"]
                for event, rule in config.get("rules", {}).items()
                if event in EVENTS
            ]
        )

async def add_hooks(self):
        config = HooksConfig().get()
        data = {
            "rules": {
                event: rule
                for event, rule in config.get("rules", {}).items()
                if event in EVENTS
            }
        }
        updated = False
        for event, rule in data["rules"].items():
            if HOOK_PATH not in rule["SCRIPT"]["scripts"]:
                rule["SCRIPT"]["enabled"] = True
                rule["SCRIPT"]["scripts"].append(HOOK_PATH)
                updated = True
        if updated:
            HooksConfig().update(data)
            try:
                await notifier.config_updated()
            except ConnectionRefusedError:
                logger.warning(
                    "Notifier is not running, cannot send CONFIG_UPDATED event"
                )
            else:
                logger.info("Hooks added and configuration updated")

async def remove_hooks(self):
        config = HooksConfig().get()
        data = {
            "rules": {
                event: rule
                for event, rule in config.get("rules", {}).items()
                if event in EVENTS
            }
        }
        updated = False
        for event, rule in data["rules"].items():
            if HOOK_PATH in rule["SCRIPT"]["scripts"]:
                rule["SCRIPT"]["scripts"].remove(HOOK_PATH)
                rule["SCRIPT"]["enabled"] = len(rule["SCRIPT"]["scripts"]) != 0
                updated = True
        if updated:
            HooksConfig().update(data)
            try:
                await notifier.config_updated()
            except ConnectionRefusedError:
                logger.warning(
                    "Notifier is not running, cannot send CONFIG_UPDATED event"
                )
            else:
                logger.info("Hooks removed and configuration updated")