#!/usr/bin/env bash

# Prowler - the handy cloud security tool (copyright 2020) 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_extra784="7.84"
CHECK_TITLE_extra784="[extra784] Check if Amazon Elasticsearch Service (ES) domains internal user database enabled"
CHECK_SCORED_extra784="NOT_SCORED"
CHECK_TYPE_extra784="EXTRA"
CHECK_SEVERITY_extra784="Medium"
CHECK_ASFF_RESOURCE_TYPE_extra784="AwsElasticsearchDomain"
CHECK_ALTERNATE_check784="extra784"
CHECK_SERVICENAME_extra784="es"
CHECK_RISK_extra784='Internal User Database is convenient for demos; for production environment use Federated authentication.'
CHECK_REMEDIATION_extra784='Remove users from internal user database and uso Cognito instead.'
CHECK_DOC_extra784='https://docs.aws.amazon.com/elasticsearch-service/latest/developerguide/fgac.html'
CHECK_CAF_EPIC_extra784='IAM'

extra784(){
  for regx in $REGIONS; do
    LIST_OF_DOMAINS=$($AWSCLI es list-domain-names $PROFILE_OPT --region $regx --query DomainNames --output text)
    if [[ $LIST_OF_DOMAINS ]]; then
      for domain in $LIST_OF_DOMAINS;do
        CHECK_IF_INTERNALDB_ENABLED=$($AWSCLI es describe-elasticsearch-domain --domain-name $domain $PROFILE_OPT --region $regx --query 'DomainStatus.AdvancedSecurityOptions.InternalUserDatabaseEnabled' --output text|grep -i true)
        if [[ $CHECK_IF_INTERNALDB_ENABLED ]];then
          textPass "$regx: Amazon ES domain $domain has internal user database enabled" "$regx" "$domain"
        else
          textFail "$regx: Amazon ES domain $domain does not have internal user database enabled" "$regx" "$domain"
        fi
      done
    else
      textInfo "$regx: No Amazon ES domain found" "$regx"
    fi
  done
}