#!/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_extra7149="7.149"
CHECK_TITLE_extra7149="[extra7149] Check if Redshift Clusters have automated snapshots enabled"
CHECK_SCORED_extra7149="NOT_SCORED"
CHECK_CIS_LEVEL_extra7149="EXTRA"
CHECK_SEVERITY_extra7149="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra7149="AwsRedshiftCluster"
CHECK_ALTERNATE_check7149="extra7149"
CHECK_SERVICENAME_extra7149="redshift"
CHECK_RISK_extra7149='If backup is not enabled; data is vulnerable. Human error or bad actors could erase or modify data.'
CHECK_REMEDIATION_extra7149='Enable automated backup for production data. Define a retention period and periodically test backup restoration. A Disaster Recovery process should be in place to govern Data Protection approach.'
CHECK_DOC_extra7149='https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/AWS_Redshift.html'
CHECK_CAF_EPIC_extra7149='Data Protection'

extra7149() {
    # "Check if Redshift cluster has audit logging enabled "
    for regx in $REGIONS; do
        LIST_OF_REDSHIFT_CLUSTERS=$($AWSCLI redshift describe-clusters $PROFILE_OPT --region $regx --query 'Clusters[*].ClusterIdentifier' --output text 2>&1)
        if [[ $(echo "$LIST_OF_REDSHIFT_CLUSTERS" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
            textInfo "$regx: Access Denied trying to describe clusters" "$regx"
            continue
        fi
        if [[ $LIST_OF_REDSHIFT_CLUSTERS ]]; then
            for redshiftcluster in $LIST_OF_REDSHIFT_CLUSTERS; do
                REDSHIFT_SNAPSHOT_ENABLED=$($AWSCLI redshift describe-cluster-snapshots $PROFILE_OPT --region $regx --cluster-identifier $redshiftcluster --snapshot-type automated)
                if [[ $REDSHIFT_SNAPSHOT_ENABLED ]]; then
                    textPass "$regx: Redshift cluster $redshiftcluster has automated snapshots." "$regx" "$redshiftcluster"
                else
                    textFail "$regx: Redshift cluster $redshiftcluster has automated snapshots disabled!" "$regx" "$redshiftcluster"
                fi
            done
        else
            textInfo "$regx: No Redshift cluster configured" "$regx"
        fi
    done
}