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# First Aid Kit - diagnostic and repair tool for Linux
# Copyright (C) 2007 Martin Sivak <msivak@redhat.com>
#
# 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 2 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, write to the Free Software
# Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
from pyfirstaidkit.plugins import Plugin,Flow
from pyfirstaidkit.reporting import PLUGIN
from pyfirstaidkit.returns import *
from pyfirstaidkit.issue import SimpleIssue
import openscap_api as openscap
import time
class OpenSCAPPlugin(Plugin):
"""Performs security audit according to the SCAP policy"""
name = "OpenSCAP audit"
version = "0.0.1"
author = "Martin Sivak <msivak@redhat.com>"
flows = Flow.init(Plugin)
del flows["fix"]
flows["diagnose"].description = "Performs a security and configuration audit of running system"
def __init__(self, *args, **kwargs):
Plugin.__init__(self, *args, **kwargs)
self._oval = "/usr/share/openscap/oval.xml"
self._xccdf = "/usr/share/openscap/xccdf.xml"
self._issues = {}
def prepare(self):
# Initialize OVAL data
self._model = openscap.oval.definition_model_import(self._oval)
if self._model:
self._session = openscap.oval.agent.new_session(self._model)
# Initialize XCCDF policies, callbacks and enable OVAL backend
self._xccdf_model = openscap.xccdf.benchmark_import(self._xccdf)
self._policy = None
if self._session and self._xccdf_model:
self._xccdf_policy_model = openscap.xccdf.policy_model(self._xccdf_model)
self._xccdf_policy_model.register_output_callback(self.oscap_callback, self)
self._xccdf_policy_model.register_engine_oval(self._session)
# Select the first available policy
self._policy = self._xccdf_policy_model.policies.next()
if self._policy is None:
self._result=ReturnFailure
self._reporting.error("OpenSCAP failed to initialize", origin = self, level = PLUGIN)
else:
self._result=ReturnSuccess
self._reporting.info("OpenSCAP initialized", origin = self, level = PLUGIN)
def backup(self):
self._result=ReturnSuccess
def restore(self):
self._result=ReturnSuccess
def oscap_callback(self, Msg, Plugin):
try:
Id = Msg.user1str
Issue = Plugin._issues.get(Id, None)
if Issue is None:
title = Msg.user3str
description = Msg.string
result = Msg.user2num
Issue = SimpleIssue(Id, title)
Issue.set(reporting = Plugin._reporting, origin = Plugin, level = PLUGIN)
Plugin._issues[Id] = Issue
Issue.set(checked = (result in (openscap.OSCAP.OVAL_RESULT_FALSE, openscap.OSCAP.OVAL_RESULT_TRUE)),
happened = (result == openscap.OSCAP.OVAL_RESULT_FALSE),
fixed = False,
reporting = Plugin._reporting,
origin = Plugin,
level = PLUGIN)
except Exception, e:
print e
return Plugin.continuing()
def diagnose(self):
self._policy.evaluate()
self._result=ReturnSuccess
def fix(self):
self._result=ReturnFailure
def clean(self):
openscap.oval.agent.destroy_session(self._session)
openscap.oval.definition_model_free(self._model)
openscap.oscap_cleanup()
self._reporting.info("OpenSCAP deinitialized", origin = self, level = PLUGIN)
self._result=ReturnSuccess
def get_plugin():
return OpenSCAPPlugin
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