#!/usr/bin/env bash

# Prowler - the handy cloud security tool (copyright 2019) 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_extra7186="7.186"
CHECK_TITLE_extra7186="[extra7186] Check S3 Account Level Public Access Block"
CHECK_SCORED_extra7186="NOT_SCORED"
CHECK_CIS_LEVEL_extra7186="EXTRA"
CHECK_SEVERITY_extra7186="High"
CHECK_ASFF_RESOURCE_TYPE_extra7186="AwsS3Bucket"
CHECK_ALTERNATE_check7186="extra7186"
CHECK_SERVICENAME_extra7186="s3"
CHECK_RISK_extra7186='Public access policies may be applied to sensitive data buckets'
CHECK_REMEDIATION_extra7186='You can enable Public Access Block at the account level to prevent the exposure of your data stored in S3'
CHECK_DOC_extra7186='https://docs.aws.amazon.com/AmazonS3/latest/userguide/access-control-block-public-access.html'
CHECK_CAF_EPIC_extra7186='Data Protection'

extra7186(){
    S3_PUBLIC_ACCESS_BLOCK=$("${AWSCLI}" ${PROFILE_OPT} s3control get-public-access-block \
                                --account-id "${ACCOUNT_NUM}" \
                                --region "${REGION}" \
                                --query 'PublicAccessBlockConfiguration.[IgnorePublicAcls,RestrictPublicBuckets]' \
                                --output text 2>&1)
    if grep -q -E 'AccessDenied|UnauthorizedOperation|AuthorizationError' <<< "${S3_PUBLIC_ACCESS_BLOCK}"; then
        textInfo "${REGION}: Access Denied trying to recover AWS account ID" "${REGION}"
        exit
    fi

    if grep -q -E 'False|NoSuchPublicAccessBlockConfiguration' <<< "${S3_PUBLIC_ACCESS_BLOCK}"; then
        textFail "${REGION}: Block Public Access is not configured for the account ${ACCOUNT_NUM}" "${REGION}" "${ACCOUNT_NUM}"
    else
        textPass "${REGION}: Block Public Access is configured for the account ${ACCOUNT_NUM}" "${REGION}" "${ACCOUNT_NUM}"
    fi
}