#!/usr/bin/env bash

# Prowler - the handy cloud security tool (copyright 2018) by Toni de la Fuente
#
# 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.

CHECK_ID_extra7156="7.156"
CHECK_TITLE_extra7156="[extra7156] Checks if API Gateway V2 has Access Logging enabled"
CHECK_SCORED_extra7156="NOT_SCORED"
CHECK_CIS_LEVEL_extra7156="EXTRA"
CHECK_SEVERITY_extra7156="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra7156="AwsApiGatewayV2Api"
CHECK_ALTERNATE_check7156="extra7156"
CHECK_SERVICENAME_extra7156="apigateway"
CHECK_RISK_extra7156="If not enabled the logging of API calls is not possible. This information is important for monitoring API access."
CHECK_REMEDIATION_extra7156="Enable Access Logging in the API stage."
CHECK_DOC_extra7156="https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-apigatewayv2-stage-accesslogsettings.html"
CHECK_CAF_EPIC_extra7156="Logging and Monitoring"

extra7156(){

    # "Check if API Gateway V2 has Access Logging enabled "
    for regx in $REGIONS; do
        LIST_OF_API_GW=$($AWSCLI apigatewayv2 get-apis $PROFILE_OPT --region $regx --query Items[*].ApiId --output text 2>&1)
        if [[ $(echo "$LIST_OF_API_GW" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
            textInfo "$regx: Access Denied trying to get APIs" "$regx"
            continue
        fi
        if [[ $LIST_OF_API_GW ]];then
            for apigwid in $LIST_OF_API_GW;do
                API_GW_NAME=$($AWSCLI apigatewayv2 get-apis $PROFILE_OPT --region $regx --query "Items[?ApiId==\`$apigwid\`].Name" --output text)
                CHECK_STAGES_NAME=$($AWSCLI apigatewayv2 get-stages $PROFILE_OPT --region $regx --api-id $apigwid --query "Items[*].StageName" --output text)
                if [[ $CHECK_STAGES_NAME ]];then
                    for stagename in $CHECK_STAGES_NAME;do
                        CHECK_STAGE_METHOD_LOGGING=$($AWSCLI apigatewayv2 get-stages $PROFILE_OPT --region $regx --api-id $apigwid --query "Items[?StageName == \`$stagename\` ].AccessLogSettings.DestinationArn" --output text)
                        if [[ $CHECK_STAGE_METHOD_LOGGING ]];then
                            textPass "$regx: API Gateway V2 $API_GW_NAME ID: $apigwid with stage: $stagename has access logging enabled to $CHECK_STAGE_METHOD_LOGGING" "$regx" "$API_GW_NAME"
                        else
                            textFail "$regx: API Gateway V2 $API_GW_NAME ID: $apigwid with stage: $stagename has access logging disabled" "$regx" "$API_GW_NAME"
                        fi
                    done
                else
                textFail "$regx: No Stage name found for $API_GW_NAME" "$regx" "$API_GW_NAME"
                fi
            done
        else
            textInfo "$regx: No API Gateway found" "$regx"
        fi
    done
}