bandit/bandit/core/blacklisting.py

72 lines
2.6 KiB
Python

# -*- coding:utf-8 -*-
#
# Copyright 2016 Hewlett-Packard Development Company, L.P.
#
# Licensed under the Apache License, Version 2.0 (the "License"); you may
# not use this file except in compliance with the License. You may obtain
# a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
# License for the specific language governing permissions and limitations
# under the License.
import ast
import fnmatch
from bandit.core import issue
def report_issue(check, name):
return issue.Issue(
severity=check['level'], confidence='HIGH',
text=check['message'].replace('{name}', name),
ident=name, test_id=check["id"])
def blacklist(context, config):
"""Generic blacklist test, B001.
This generic blacklist test will be called for any encountered node with
defined blacklist data available. This data is loaded via plugins using
the 'bandit.blacklists' entry point. Please see the documentation for more
details. Each blacklist datum has a unique bandit ID that may be used for
filtering purposes, or alternatively all blacklisting can be filtered using
the id of this built in test, 'B001'.
"""
blacklists = config
node_type = context.node.__class__.__name__
if node_type == 'Call':
func = context.node.func
if isinstance(func, ast.Name) and func.id == '__import__':
if len(context.node.args):
if isinstance(context.node.args[0], ast.Str):
name = context.node.args[0].s
else:
# TODO(??): import through a variable, need symbol tab
name = "UNKNOWN"
else:
name = "" # handle '__import__()'
else:
name = context.call_function_name_qual
for check in blacklists[node_type]:
for qn in check['qualnames']:
if fnmatch.fnmatch(name, qn):
return report_issue(check, name)
if node_type.startswith('Import'):
prefix = ""
if node_type == "ImportFrom":
if context.node.module is not None:
prefix = context.node.module + "."
for check in blacklists[node_type]:
for name in context.node.names:
for qn in check['qualnames']:
if (prefix + name.name).startswith(qn):
return report_issue(check, name.name)