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Viewing / Editing File: smtp_blocking.py

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"""An RPC interface to SMTP blocking subsystem.

It is needed only for manual testing purposes.
"""

import logging

from defence360agent.rpc_tools import lookup, ValidationError
from defence360agent.utils import Scope
from im360.subsys.smtp_blocking import (
    sync_rules_for_all_versions,
    reset_rules_for_all_versions,
    is_SMTP_blocking_supported,
    read_SMTP_settings,
    conflicts_exist,
)

__all__ = ['SMTPEndpoints']

logger = logging.getLogger(__name__)


class SMTPEndpoints(lookup.RootEndpoints):
    SCOPE = Scope.IM360

    @lookup.bind('smtp-blocking', 'sync')
    async def sync_rules(self):
        """Create SMTP blocking iptables rules according to settings."""
        if await is_SMTP_blocking_supported():
            if await conflicts_exist():
                raise ValidationError("SMTP blocking conflicts with third "
                                      "party features")
            smtp_settings = read_SMTP_settings()
            await sync_rules_for_all_versions(smtp_settings)
        else:
            raise ValidationError("SMTP blocking is not supported by "
                                  "current kernel")

    @lookup.bind('smtp-blocking', 'reset')
    async def reset_rules(self):
        """Remove all rules installed by this plugin."""
        if await is_SMTP_blocking_supported():
            if await conflicts_exist():
                raise ValidationError("SMTP blocking conflicts with third "
                                      "party features")
            await reset_rules_for_all_versions()
        else:
            raise ValidationError("SMTP blocking is not supported by "
                                  "current kernel")
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