#!/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_extra7132="7.132"
CHECK_TITLE_extra7132="[extra7132] Check if RDS instances has enhanced monitoring enabled"
CHECK_SCORED_extra7132="NOT_SCORED"
CHECK_CIS_LEVEL_extra7132="EXTRA"
CHECK_SEVERITY_extra7132="Low"
CHECK_ASFF_RESOURCE_TYPE_extra7132="AwsRdsDbInstance"
CHECK_ALTERNATE_check7132="extra7132"
CHECK_SERVICENAME_extra7132="rds"
CHECK_RISK_extra7132='A smaller monitoring interval results in more frequent reporting of OS metrics.'
CHECK_REMEDIATION_extra7132='To use Enhanced Monitoring; you must create an IAM role; and then enable Enhanced Monitoring.'
CHECK_DOC_extra7132='https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/USER_Monitoring.OS.html'
CHECK_CAF_EPIC_extra7132='Logging and Monitoring'

extra7132(){
  for regx in $REGIONS; do
    RDS_INSTANCES=$($AWSCLI rds describe-db-instances $PROFILE_OPT --region $regx --query "DBInstances[?Engine != 'docdb'].DBInstanceIdentifier" --output text 2>&1)
    if [[ $(echo "$RDS_INSTANCES" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
        textInfo "$regx: Access Denied trying to describe DB instances" "$regx"
        continue
    fi
    if [[ $RDS_INSTANCES ]];then
      for rdsinstance in ${RDS_INSTANCES}; do
          RDS_NAME="$rdsinstance"
          MONITORING_FLAG=$($AWSCLI rds describe-db-instances $PROFILE_OPT --region $regx --db-instance-identifier $rdsinstance --query 'DBInstances[*].[EnhancedMonitoringResourceArn]' --output text)
          if [[ $MONITORING_FLAG == "None" ]];then 
              textFail "$regx: RDS instance: $RDS_NAME has enhanced monitoring disabled!" "$rex" "$RDS_NAME"
          else
              textPass "$regx: RDS instance: $RDS_NAME has enhanced monitoring enabled." "$regx" "$RDS_NAME"
          fi
      done
    else
      textInfo "$regx: no RDS instances found" "$regx" "$RDS_NAME"
    fi
  done
}