#!/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.

# Remediation:
#
# https://www.cloudconformity.com/knowledge-base/aws/RDS/instance-deletion-protection.html
# https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/Overview.DBInstance.Modifying.html
#
# aws rds modify-db-instance \
#	--region us-east-1 \
#	--db-instance-identifier test-db \
#	--deletion-protection \
#	[--apply-immediately | --no-apply-immediately]

CHECK_ID_extra7113="7.113"
CHECK_TITLE_extra7113="[extra7113] Check if RDS instances have deletion protection enabled "
CHECK_SCORED_extra7113="NOT_SCORED"
CHECK_CIS_LEVEL_extra7113="EXTRA"
CHECK_SEVERITY_extra7113="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra7113="AwsRdsDbInstance"
CHECK_ALTERNATE_check7113="extra7113"
CHECK_SERVICENAME_extra7113="rds"
CHECK_RISK_extra7113='You can only delete instances that do not have deletion protection enabled.'
CHECK_REMEDIATION_extra7113='Enable deletion protection using the AWS Management Console for production DB instances.'
CHECK_DOC_extra7113='https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_DeleteInstance.html'
CHECK_CAF_EPIC_extra7113='Data Protection'

extra7113(){
  for regx in $REGIONS; do
    LIST_OF_RDS_INSTANCES=$($AWSCLI rds describe-db-instances $PROFILE_OPT --region $regx --query "DBInstances[?Engine != 'docdb'].DBInstanceIdentifier" --output text 2>&1)
    if [[ $(echo "$LIST_OF_RDS_INSTANCES" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
        textInfo "$regx: Access Denied trying to describe DB instances" "$regx"
        continue
    fi
    if [[ $LIST_OF_RDS_INSTANCES ]];then
      for rdsinstance in $LIST_OF_RDS_INSTANCES; do
        IS_DELETIONPROTECTION=$($AWSCLI rds describe-db-instances $PROFILE_OPT --region $regx --db-instance-identifier $rdsinstance --query 'DBInstances[*].DeletionProtection' --output text)
        if [[ $IS_DELETIONPROTECTION == "False" ]]; then
          textFail "$regx: RDS instance $rdsinstance deletion protection is not enabled!" "$regx" "$rdsinstance"
        else
          textPass "$regx: RDS instance $rdsinstance deletion protection is enabled" "$regx" "$rdsinstance"
        fi
      done
    else
      textInfo "$regx: No RDS instances found" "$regx" "$rdsinstance"
    fi
  done
}