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

# Copyright (c) 2020 - 2024 Detlev Offenbach <detlev@die-offenbachs.de>
#

"""
Module implementing a check for shell injection within Paramiko.
"""

#
# 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": [
            (checkParamikoCalls, ("S601",)),
        ],
    }


def checkParamikoCalls(reportError, context, _config):
    """
    Function to check for shell injection within Paramiko.

    @param reportError function to be used to report errors
    @type func
    @param context security context object
    @type SecurityContext
    @param _config dictionary with configuration data (unused)
    @type dict
    """
    for module in ["paramiko"]:
        if context.isModuleImportedLike(module) and context.callFunctionName in [
            "exec_command"
        ]:
            reportError(
                context.node.lineno - 1,
                context.node.col_offset,
                "S601",
                "M",
                "M",
            )
