#!/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_extra747="7.47"
CHECK_TITLE_extra747="[extra747] Check if RDS instances is integrated with CloudWatch Logs"
CHECK_SCORED_extra747="NOT_SCORED"
CHECK_CIS_LEVEL_extra747="EXTRA"
CHECK_SEVERITY_extra747="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra747="AwsRdsDbInstance"
CHECK_ALTERNATE_check747="extra747"
CHECK_SERVICENAME_extra747="rds"
CHECK_RISK_extra747='If logs are not enabled; monitoring of service use and threat analysis is not possible.'
CHECK_REMEDIATION_extra747='Use CloudWatch Logs to perform real-time analysis of the log data. Create alarms and view metrics.'
CHECK_DOC_extra747='https://docs.aws.amazon.com/AmazonRDS/latest/UserGuide/publishing_cloudwatchlogs.html'
CHECK_CAF_EPIC_extra747='Logging and Monitoring'

extra747(){
  for regx in $REGIONS; do
    LIST_OF_RDS_INSTANCES=$($AWSCLI rds describe-db-instances $PROFILE_OPT --region $regx --query 'DBInstances[*].DBInstanceIdentifier' --output text 2>&1)
    if [[ $(echo "$LIST_OF_RDS_INSTANCES" | grep -E 'AccessDenied|UnauthorizedOperation|AuthorizationError') ]]; then
        textInfo "$regx: Access Denied trying to get rest APIs" "$regx"
        continue
    fi
    if [[ $LIST_OF_RDS_INSTANCES ]];then
      for rdsinstance in $LIST_OF_RDS_INSTANCES; do
        # if retention is 0 then is disabled
        ENABLED_CLOUDWATCHLOGS_EXPORTS=$($AWSCLI rds describe-db-instances $PROFILE_OPT --region $regx --db-instance-identifier $rdsinstance --query 'DBInstances[*].EnabledCloudwatchLogsExports' --output text)
        if [[ $ENABLED_CLOUDWATCHLOGS_EXPORTS ]]; then
          textPass "$regx: RDS instance $rdsinstance is shipping $ENABLED_CLOUDWATCHLOGS_EXPORTS to CloudWatch Logs" "$regx" "$rdsinstance"
        else
          textFail "$regx: RDS instance $rdsinstance has no CloudWatch Logs enabled!" "$regx" "$rdsinstance"
        fi
      done
    else
      textInfo "$regx: No RDS instances found" "$regx" "$rdsinstance"
    fi
  done
}
