# -*- coding: utf-8 -*-

# Copyright (c) 2020 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing checks for switched off certificate validation.
"""

#
# This is a modified version of the one found in the bandit package.
#
# Original Copyright 2014 Hewlett-Packard Development Company, L.P.
#
# SPDX-License-Identifier: Apache-2.0
#


def getChecks():
    """
    Public method to get a dictionary with checks handled by this module.
    
    @return dictionary containing checker lists containing checker function and
        list of codes
    @rtype dict
    """
    return {
        "Call": [
            (checkNoCertificateValidation, ("S501",)),
        ],
    }


def checkNoCertificateValidation(reportError, context, config):
    """
    Function to check for switched off certificate validation.
    
    @param reportError function to be used to report errors
    @type func
    @param context security context object
    @type SecurityContext
    @param config dictionary with configuration data
    @type dict
    """
    http_verbs = ('get', 'options', 'head', 'post', 'put', 'patch', 'delete')
    if (
        'requests' in context.callFunctionNameQual and
        context.callFunctionName in http_verbs
    ):
        if context.checkCallArgValue('verify', 'False'):
            reportError(
                context.getLinenoForCallArg('verify') - 1,
                context.getOffsetForCallArg('verify'),
                "S501",
                "H",
                "H"
            )
