CHECK_ID_check_extra73="" 
CHECK_TITLE_check_extra73="" 
CHECK_SCORED_check_extra73="" 
CHECK_TYPE_check_extra73="" 
CHECK_ALTERNATE_check_extra73="check_extra73" 
 
extra73(){
  # "Ensure there are no S3 buckets open to the Everyone or Any AWS user (Not Scored) (Not part of CIS benchmark)"
  textTitle "$ID73" "$TITLE73" "NOT_SCORED" "EXTRA"
  textNotice "Looking for open S3 Buckets (ACLs and Policies) in all regions...  "
  ALL_BUCKETS_LIST=$($AWSCLI s3api list-buckets --query 'Buckets[*].{Name:Name}' $PROFILE_OPT --region $REGION --output text)
  for bucket in $ALL_BUCKETS_LIST; do
    BUCKET_LOCATION=$($AWSCLI s3api get-bucket-location --bucket $bucket $PROFILE_OPT --region $REGION --output text)
    if [[ "None" == $BUCKET_LOCATION ]]; then
      BUCKET_LOCATION="us-east-1"
    fi
    if [[ "EU" == $BUCKET_LOCATION ]]; then
      BUCKET_LOCATION="eu-west-1"
    fi
    # check if AllUsers is in the ACL as Grantee
    CHECK_BUCKET_ALLUSERS_ACL=$($AWSCLI s3api get-bucket-acl $PROFILE_OPT --region $BUCKET_LOCATION --bucket $bucket --query "Grants[?Grantee.URI == 'http://acs.amazonaws.com/groups/global/AllUsers']" --output text |grep -v GRANTEE)
    CHECK_BUCKET_ALLUSERS_ACL_SINGLE_LINE=$(echo -ne $CHECK_BUCKET_ALLUSERS_ACL)
    # check if AuthenticatedUsers is in the ACL as Grantee, they will have access with sigened URL only
    CHECK_BUCKET_AUTHUSERS_ACL=$($AWSCLI s3api get-bucket-acl $PROFILE_OPT --region $BUCKET_LOCATION --bucket $bucket --query "Grants[?Grantee.URI == 'http://acs.amazonaws.com/groups/global/AuthenticatedUsers']" --output text |grep -v GRANTEE)
    CHECK_BUCKET_AUTHUSERS_ACL_SINGLE_LINE=$(echo -ne $CHECK_BUCKET_AUTHUSERS_ACL)
    # to prevent error NoSuchBucketPolicy first clean the output controlling stderr
    TEMP_POLICY_FILE=$(mktemp -t prowler-${ACCOUNT_NUM}-${bucket}.policy.XXXXXXXXXX)
    $AWSCLI s3api get-bucket-policy $PROFILE_OPT --region $BUCKET_LOCATION --bucket $bucket --output text --query Policy > $TEMP_POLICY_FILE 2> /dev/null
    # check if the S3 policy has Principal as *
    CHECK_BUCKET_ALLUSERS_POLICY=$(cat $TEMP_POLICY_FILE | sed -e 's/[{}]/''/g' | awk -v k="text" '{n=split($0,a,","); for (i=1; i<=n; i++) print a[i]}'|awk '/Principal/ && !skip { print } { skip = /Deny/} '|grep ^\"Principal|grep \*)
    if [[ $CHECK_BUCKET_ALLUSERS_ACL || $CHECK_BUCKET_AUTHUSERS_ACL || $CHECK_BUCKET_ALLUSERS_POLICY ]];then
      if [[ $CHECK_BUCKET_ALLUSERS_ACL ]];then
        textWarn "$BUCKET_LOCATION: $bucket bucket is open to the Internet (Everyone) with permissions: $CHECK_BUCKET_ALLUSERS_ACL_SINGLE_LINE" "$regx"
      fi
      if [[ $CHECK_BUCKET_AUTHUSERS_ACL ]];then
        textWarn "$BUCKET_LOCATION: $bucket bucket is open to Authenticated users (Any AWS user) with permissions: $CHECK_BUCKET_AUTHUSERS_ACL_SINGLE_LINE" "$regx"
      fi
      if [[ $CHECK_BUCKET_ALLUSERS_POLICY ]];then
        textWarn "$BUCKET_LOCATION: $bucket bucket policy \"may\" allow Anonymous users to perform actions (Principal: \"*\")" "$regx"
      fi
    else
      textOK "$BUCKET_LOCATION: $bucket bucket is not open" "$regx"
    fi
    rm -fr $TEMP_POLICY_FILE
  done
}