# -*- coding: utf-8 -*-
"""This file contains an interface for browser cookie plugins."""
from __future__ import unicode_literals
import abc
from plaso.lib import errors
from plaso.parsers import plugins
[docs]class BaseCookiePlugin(plugins.BasePlugin):
"""A browser cookie plugin for Plaso.
This is a generic cookie parsing interface that can handle parsing
cookies from all browsers.
"""
NAME = 'cookie'
DESCRIPTION = ''
# The name of the cookie value that this plugin is designed to parse.
# This value is used to evaluate whether the plugin is the correct one
# to parse the browser cookie.
COOKIE_NAME = ''
def __init__(self):
"""Initialize the browser cookie plugin."""
super(BaseCookiePlugin, self).__init__()
self.cookie_data = ''
# pylint 1.9.3 wants a docstring for kwargs, but this is not useful to add.
# pylint: disable=missing-param-doc
[docs] @abc.abstractmethod
def GetEntries(self, parser_mediator, cookie_data=None, url=None, **kwargs):
"""Extract and return EventObjects from the data structure.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
cookie_data (Optional[bytes]): cookie data, as a byte sequence.
url (Optional[str]): URL or path where the cookie was set.
"""
# pylint 1.9.3 wants a docstring for kwargs, but this is not useful to add.
# pylint: disable=missing-param-doc,arguments-differ
[docs] def Process(self, parser_mediator, cookie_name, cookie_data, url, **kwargs):
"""Determine if this is the right plugin for this cookie.
Args:
parser_mediator (ParserMediator): mediates interactions between parsers
and other components, such as storage and dfvfs.
cookie_name (str): the name of the cookie value.
cookie_data (bytes): the cookie data, as a byte sequence.
url (str): the full URL or path where the cookie was set.
Raises:
errors.WrongPlugin: If the cookie name differs from the one
supplied in COOKIE_NAME.
ValueError: If cookie_name or cookie_data are not set.
"""
if cookie_name is None or cookie_data is None:
raise ValueError('Cookie name or data are not set.')
if cookie_name != self.COOKIE_NAME:
raise errors.WrongPlugin(
'Not the correct cookie plugin for: {0:s} [{1:s}]'.format(
cookie_name, self.NAME))
# This will raise if unhandled keyword arguments are passed.
super(BaseCookiePlugin, self).Process(parser_mediator)
self.GetEntries(parser_mediator, cookie_data=cookie_data, url=url)