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config.py	42.01 MB	View DL Edit
config_provider.py	9.36 MB	View DL Edit
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hooks.py	6.13 MB	View DL Edit
hook_events.py	1.51 MB	View DL Edit
license.py	21.27 MB	View DL Edit
messages.py	12 MB	View DL Edit
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__init__.py	0 B	View DL Edit

Edit file: /opt/imunify360/venv/lib/python3.11/site-packages/defence360agent/contracts/messages.py

import asyncio
from enum import Enum
from typing import List

from defence360agent.contracts.config import Core as CoreConfig
from defence360agent.utils import batched, batched_dict

class MessageNotFoundError(Exception):
    pass

class UnknownMessage:
    """
    Used as stub for MessageType
    """

def __init__(self):
        raise MessageNotFoundError("Message class is not found.")

def __getattr__(self, name):
        return "Unknown"  # pragma: no cover

class MessageT:
    _subclasses = []

def __init_subclass__(cls, **kwargs):
        super().__init_subclass__(**kwargs)
        cls._subclasses.append(cls)

@classmethod
    def get_subclasses(cls):
        return tuple(cls._subclasses)

class _MessageType:
    """
    Used to get specific message class. For example,
    >>> _MessageType().ConfigUpdate
    <class 'defence360agent.contracts.messages.ConfigUpdate'>
    >>> _MessageType().NotExistMessage
    <class 'defence360agent.contracts.messages.UnknownMessage'>
    >>>
    """

def __getattr__(self, name):
        for subcls in Message.get_subclasses():
            # is is supposed that all subclasses have different names
            if subcls.__name__ == name:
                return subcls
        return UnknownMessage

MessageType = _MessageType()

class ReportTarget(Enum):
    API = "api"
    PERSISTENT_CONNECTION = "conn"

class Reportable(MessageT):
    """
    Mixin class for messages that should be sent to the server
    """

TARGET = ReportTarget.PERSISTENT_CONNECTION

@classmethod
    def get_subclass_with_method(cls, method: str):
        """
        Return a subclass with the same DEFAULT_METHOD as *method*.
        It can be used to detect report target from message method.
        NOTE: it is not guaranteed that the class with the *method* is unique,
              in this case the first subclass found is returned, but
              it is tested that all such subclasses have the same TARGET.
        """
        for subclass in cls.__subclasses__():
            if method == getattr(subclass, "DEFAULT_METHOD"):
                return subclass
        return None  # pragma: no cover

class Received(MessageT):
    """
    Mixin class for messages received from the server.

These messages are created in the client360 plugin when receiving a
    request from imunify360.cloudlinux.com.
    """

@classmethod
    def get_subclass_with_action(cls, action: str):
        for subclass in cls.__subclasses__():
            received_actions = getattr(subclass, "RECEIVED_ACTIONS", []) or [
                getattr(subclass, "DEFAULT_METHOD")
            ]
            if action in received_actions:
                return subclass
        raise MessageNotFoundError(
            'Message class is not found for "{}" action'.format(action)
        )

class Lockable(MessageT):
    _lock = None

@classmethod
    async def acquire(cls) -> None:
        if cls._lock is None:
            cls._lock = asyncio.Lock()
        await cls._lock.acquire()

@classmethod
    def locked(cls) -> bool:
        return cls._lock is not None and cls._lock.locked()

@classmethod
    def release(cls) -> None:
        if cls._lock is not None:
            cls._lock.release()

class Message(dict, MessageT):
    """
    Base class for messages to be passed as
    a parameter to plugins.MessageSink.process_message()
    """

# Default method='...' to send to the Server
    DEFAULT_METHOD = ""
    PRIORITY = 10
    PROCESSING_TIME_THRESHOLD = 60  # 1 min
    #: fold collections' repr with more than the threshold number of items
    _FOLD_LIST_THRESHOLD = 100
    #: shorten strings longer than the threshold characters
    _SHORTEN_STR_THRESHOLD = 320

def __init__(self, *args, **kwargs) -> None:
        if self.DEFAULT_METHOD:
            self["method"] = self.DEFAULT_METHOD
        super(Message, self).__init__(*args, **kwargs)

@property
    def payload(self):
        return {k: v for k, v in self.items() if k != "method"}

def __getattr__(self, name):
        """
        Called when an attribute lookup has not found the attribute
        in the usual places

A shortcut to access an item from dict
        """
        try:
            return self[name]
        except KeyError as exc:
            raise AttributeError(name) from exc

def __repr__(self):
        """
        Do not flood console.log with large sequences If there is a list
        of more than _FOLD_LIST_THRESHOLD items inside the message,
        then this list will be collapsed and the number of items in
        the list will be shown.  The message itself will not be
        collapsed.

"""
        items_to_fold = {
            k: _shorten_str(colxn, self._SHORTEN_STR_THRESHOLD)
            if isinstance(colxn, str)
            else f"<{len(colxn)} item(s)>"
            for k, colxn in self.items()
            if hasattr(colxn, "__len__")
            and len(colxn) > self._FOLD_LIST_THRESHOLD
        }

folded_msg = self.copy()
        folded_msg.update(items_to_fold)
        return "{}({})".format(self.__class__.__qualname__, folded_msg)

def __str__(self):
        return self.__repr__()

class MessageList(Message):
    def __init__(self, msg_list):
        super().__init__(list=msg_list)

@property
    def payload(self):
        return self.list

class ShortenReprListMixin:
    """
    Do not flood console.log with large sequences
    The method collapses messages that are a list.
    Instead of showing all the elements of the message,
    their number will be displayed.
    """

def __repr__(self: dict):  # type: ignore
        return "{}({})".format(
            self.__class__.__qualname__,
            "<{} item(s)>".format(len(self.get("items", []))),
        )

class Accumulatable(Message):
    """Messages of this class will be grouped into a list of LIST_CLASS
    message instance by Accumulate plugin.  Messages whose do_accumulate()
    call returns False will not be added to list."""

LIST_CLASS = MessageList

def do_accumulate(self) -> bool:
        """Return True if this message is worth collecting, False otherwise."""
        return True

class ServerConnected(Message):
    pass

# alias (for better client code readability)
class ServerReconnected(ServerConnected):
    pass

class Ping(Message, Reportable):
    """
    Will send this message on connected, reconnected events
    to provide central server with agent version
    """

DEFAULT_METHOD = "PING"
    PRIORITY = 0

def __init__(self):
        super().__init__()
        self["version"] = CoreConfig.VERSION

class Ack(Message, Reportable):
    """
    Notify Server that a persistent message with *seq_number* has been
    received by Agent.

"""

DEFAULT_METHOD = "ACK"

def __init__(self, seq_number, **kwargs):
        super().__init__(**kwargs)
        self["_meta"] = dict(per_seq=seq_number)

class Noop(Message):
    """
    Sending NOOP to the agent to track the message in agent logs.
    """

DEFAULT_METHOD = "NOOP"

class ServerConfig(Message, Reportable):
    """
    Information about server environment
    """

DEFAULT_METHOD = "SERVER_CONFIG"
    TARGET = ReportTarget.API

def __repr__(self):
        return "{}()".format(self.__class__.__qualname__)

class DomainList(Message, Reportable):
    """
    Information about server domains
    """

DEFAULT_METHOD = "DOMAIN_LIST"
    TARGET = ReportTarget.API

def __repr__(self):
        return "{}()".format(self.__class__.__qualname__)

class FilesUpdated(Message):
    """
    To consume products of files.update()
    """

def __init__(self, files_type, files_index):
        """
        :param files_type: files.Type
        :param files_index: files.LocalIndex
        """
        # explicit is better than implicit
        self["files_type"] = files_type
        self["files_index"] = files_index

def __repr__(self):
        """
        Do not flood console.log with large sequences
        """
        return "{}({{'files_type':'{}', 'files_index':{}}})".format(
            self.__class__.__qualname__,
            self["files_type"],
            self["files_index"],
        )

class UpdateFiles(Message, Received):
    """
    Update files by getting message from the server
    """

DEFAULT_METHOD = "UPDATE"

class ConfigUpdate(Message):
    DEFAULT_METHOD = "CONFIG_UPDATE"

class Reject(Exception):
    """
    Kinda message filtering facility.
    Raised in order to stop message processing through plugins.
    Takes reason of reject as argument.
    """

pass

class Health(Message):
    DEFAULT_METHOD = "HEALTH"

class CommandInvoke(Message, Reportable):
    DEFAULT_METHOD = "COMMAND_INVOKE"

class ScanFailed(Message, Reportable):
    DEFAULT_METHOD = "SCAN_FAILED"

class CleanupFailed(Message, Reportable):
    DEFAULT_METHOD = "CLEANUP_FAILED"

class RestoreFromBackupTask(Message):
    """
    Creates a task to restore files from backup
    """

DEFAULT_METHOD = "MALWARE_RESTORE_FROM_BACKUP"

class cPanelEvent(Message):
    DEFAULT_METHOD = "PANEL_EVENT"
    ALLOWED_FIELDS = {
        "new_pkg",
        "plan",
        "exclude",
        "imunify360_proactive",
        "imunify360_av",
    }

@classmethod
    def from_hook_event(
        cls, username: str, hook: str, ts: float, fields: dict
    ):
        data = {
            k.lower(): v
            for k, v in fields.items()
            if k.lower() in cls.ALLOWED_FIELDS
        }
        # Check for user rename
        if (
            hook == "Modify"
            and "user" in fields
            and "newuser" in fields
            and fields["user"] != fields["newuser"]
        ):
            data["old_username"] = fields["user"]
        return cls(
            {
                "username": username,
                "hook": hook,
                "data": data,
                "timestamp": ts,
            }
        )

class IContactSent(Message, Reportable):
    DEFAULT_METHOD = "ICONTACT_SENT"

def _shorten_str(s: str, limit: int) -> str:
    """Shorten *s* string if its length exceeds *limit*."""
    assert limit > 4
    return (
        f"{s[: limit // 2 - 1]}...{s[-limit // 2 + 2 :]}"
        if len(s) > limit
        else s
    )

class BackupInfo(Message, Reportable):
    """Information about enabled backup backend"""

DEFAULT_METHOD = "BACKUP_INFO"

class MDSReportList(ShortenReprListMixin, Message, Reportable):
    DEFAULT_METHOD = "MDS_SCAN_LIST"

class MDSReport(Accumulatable):
    LIST_CLASS = MDSReportList

class Splittable:
    """
    A message list could be split into multiple batches.
    The split is possible for a list itself along with internal resources.
    """

LIST_SIZE = None

BATCH_SIZE = None
    BATCH_FIELD = None

@classmethod
    def _split_items(cls, messages: List[Accumulatable]):
        """
        Split messages' internal lists of things into batches.
        A field that is meant to split is defined by `BATCH_FIELD`.
        """
        if cls.BATCH_FIELD and cls.BATCH_SIZE:
            for message in messages:
                if (items := message.get(cls.BATCH_FIELD)) is None:
                    yield message
                else:
                    message_class = type(message)
                    batcher = (
                        batched_dict if isinstance(items, dict) else batched
                    )
                    for batch in batcher(items, cls.BATCH_SIZE):
                        data = message.copy()
                        data[cls.BATCH_FIELD] = batch
                        new_message = message_class(data)
                        yield new_message
        else:
            yield from iter(messages)

@classmethod
    def batched(cls, messages: List[Accumulatable]):
        list_size = cls.LIST_SIZE or len(messages)
        split = cls._split_items(messages)
        yield from batched(split, list_size)

class EnsureServiceState(Message):
    """Ensure the service has the appropriate status"""

DEFAULT_METHOD = "ENSURE_SERVICE_STATE"

class SensorWordpressIncidentList(MessageList, Reportable):
    """Aggregated incident list"""

DEFAULT_METHOD = "INCIDENT_LIST"

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