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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.configuration import Config
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()
flows["oscap_scan"] = Flow({
Plugin.initial: {Return: "prepare"},
"prepare": {ReturnSuccess: "policy", ReturnFailure: "clean"},
"policy": {ReturnSuccess: "rules", ReturnFailure: "clean",
ReturnAbort: "clean"},
"rules": {ReturnSuccess: "tailoring", ReturnFailure: "clean",
ReturnBack: "policy", ReturnAbort: "clean"},
"tailoring": {ReturnSuccess: "diagnose", ReturnFailure: "clean",
ReturnBack: "rules", ReturnAbort: "clean"},
"diagnose": {ReturnSuccess: "clean", ReturnFailure: "clean"},
"clean": {ReturnSuccess: Plugin.final}
}, description = "Performs a security and configuration audit of running system")
flows["oscap_scan"].title = "Security Audit"
def __init__(self, *args, **kwargs):
Plugin.__init__(self, *args, **kwargs)
self._oval = "/usr/share/openscap/oval.xml"
self._xccdf = "/usr/share/openscap/scap-xccdf.xml"
self._issues = {}
def prepare(self):
self._objs = openscap.xccdf.init(self._xccdf)
self._xccdf_policy_model = self._objs["policy_model"]
self._policy = None
self._xccdf_policy_model.register_output_callback(self.oscap_callback, self)
self._xccdf_policy_model.register_start_callback(self.oscap_callback_start, self)
self._reporting.info("OpenSCAP initialized", origin = self, level = PLUGIN)
self._result=ReturnSuccess
def policy(self):
# Select the only available policy
if len(self._xccdf_policy_model.policies)==1:
self._result=ReturnSuccess
self._policy = self._xccdf_policy_model.policies[0]
return
if not Config.operation.interactive:
self._result=ReturnSuccess
self._policy = self._xccdf_policy_model.policies[-1]
return
all_policies = map(lambda p: (
p.id,
p.profile and len(p.profile.title) and p.profile.title[0].text or "Default profile",
p.id == None and True or False,
p.profile and p.profile.description or "",
"", ""
), self._xccdf_policy_model.policies)
s = self._reporting.config_question_wait("Choose OpenScap profile",
"Select desired profile and press OK",
all_policies,
options = {"mode": 3, "back": False},
origin = self,
level = PLUGIN)
if s in (ReturnBack, ReturnAbort):
self._result = s
return
for idx, (id, val) in enumerate(s):
if val:
self._policy = self._xccdf_policy_model.policies[idx]
self._reporting.info("OpenSCAP policy %s selected" % (id,), origin = self, level = PLUGIN)
if self._policy is None:
self._result=ReturnFailure
self._reporting.error("OpenSCAP policy failed to initialize", origin = self, level = PLUGIN)
else:
self._reporting.info("OpenSCAP policy initialized", origin = self, level = PLUGIN)
self._result=ReturnSuccess
def rules(self):
if not Config.operation.interactive:
self._result=ReturnSuccess
return
all_rules = self._policy.get_selects()
if len(all_rules) == 0:
self._result=ReturnSuccess
return
preprocess_rules = lambda x: (x.item,
self._policy.model.benchmark.get_item(x.item).title[0].text,
x.selected and True,
self._policy.model.benchmark.get_item(x.item).description[0].text,
"",
"Use checkbox disable or enable rule"
)
all_rules = map(preprocess_rules, all_rules)
s = self._reporting.config_question_wait("Setup OpenScap rules",
"Enable or disable rules and press OK",
all_rules,
options = {"mode": 1},
origin = self,
level = PLUGIN)
if s in (ReturnBack, ReturnAbort):
self._result = s
return
enabled_rules = []
for r in s:
if r[1]:
enabled_rules.append(r[0])
self._policy.set_rules(enabled_rules)
self._reporting.info("Enabled rules: %s" % repr(enabled_rules), origin = self,
level = PLUGIN)
self._result=ReturnSuccess
def tailoring(self):
if not Config.operation.interactive:
self._result=ReturnSuccess
return
tailor_items = self._policy.get_tailor_items()
if len(tailor_items) == 0:
self._result=ReturnSuccess
return
preproces_tailor_items = lambda i: (i["id"],
i["titles"][i["lang"]] or "",
i["selected"][1] or "",
i["descs"][i["lang"]] or "",
i["match"] or ".*",
"Error setting the value, read the following description and try again:\n\n"+i["descs"][i["lang"]],
set(i["options"].values())
)
tailor_items = map(preproces_tailor_items, tailor_items)
s = self._reporting.config_question_wait("Setup OpenScap policy",
"Set preferred values and press OK",
tailor_items,
options = {"mode": 2},
origin = self,
level = PLUGIN)
if s in (ReturnBack, ReturnAbort):
self._result = s
return
preprocess_s = lambda v: {"id": v[0], "value": v[1]}
s = map(preprocess_s, s)
self._policy.set_tailor_items(s)
self._reporting.info("Tailoring Done", origin = self, level = PLUGIN)
self._result=ReturnSuccess
def oscap_callback(self, Msg, Plugin):
if Msg.user2num == openscap.OSCAP.XCCDF_RESULT_NOT_SELECTED:
if Plugin.continuing():
return 0
else:
return 1
try:
Id = Msg.user1str
result = Msg.user2num
self._info[Id] = result
Issue = Plugin._issues.get(Id, None)
Issue.set(checked = (result in
(openscap.OSCAP.XCCDF_RESULT_FAIL,
openscap.OSCAP.XCCDF_RESULT_PASS)),
happened = (result == openscap.OSCAP.XCCDF_RESULT_FAIL),
fixed = False,
reporting = Plugin._reporting,
origin = Plugin,
level = PLUGIN)
except Exception, e:
print e
if Plugin.continuing():
return 0
else:
return 1
def oscap_callback_start(self, Msg, Plugin):
if Msg.user2num == openscap.OSCAP.XCCDF_RESULT_NOT_SELECTED:
if Plugin.continuing():
return 0
else:
return 1
try:
Id = Msg.user1str
self._info[Id] = -1
Issue = Plugin._issues.get(Id, None)
if Issue is None:
title = Msg.user3str
description = Msg.string
Issue = SimpleIssue(Id, title)
Issue.set(reporting = Plugin._reporting, origin = Plugin, level = PLUGIN)
Plugin._issues[Id] = Issue
except Exception, e:
print e
if Plugin.continuing():
return 0
else:
return 1
def diagnose(self):
for x in self._policy.get_selected_rules():
self._reporting.info("Selecting rule "+x.item, origin = self, level = PLUGIN)
self._reporting.info("Starting OpenSCAP evaluation", origin = self, level = PLUGIN)
self._policy.evaluate()
self._result=ReturnSuccess
def clean(self):
openscap.xccdf.destroy(self._objs)
self._reporting.info("OpenSCAP deinitialized", origin = self, level = PLUGIN)
self._result=ReturnSuccess
def get_plugin():
return OpenSCAPPlugin
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