gcp_bigquery_cmek_encryption_v1.yaml

# Copyright 2019 Google LLC
#
# 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.
#
# This constraint checks to see if all the BigQuery table has customer managed encryption key enabled. It 
# flags those tables that don't have customer managed encryption keys enabled.
#
apiVersion: templates.gatekeeper.sh/v1alpha1
kind: ConstraintTemplate
metadata:
  name: gcp-bigquery-cmek-encryption-v1
spec:
  crd:
    spec:
      names:
        kind: GCPBigQueryCMEKEncryptionConstraintV1
      validation:
        openAPIV3Schema:
          properties: {}
  targets:
   validation.gcp.forsetisecurity.org:
      rego: |
            #INLINE("validator/bigquery_cmek.rego")
            #
            # Copyright 2018 Google LLC
            #
            # 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.
            #
            
            package templates.gcp.GCPBigQueryCMEKEncryptionConstraintV1
            
            import data.validator.gcp.lib as lib
            
            deny[{
            	"msg": message,
            	"details": metadata,
            }] {
            	asset := input.asset
            	asset.asset_type == "bigquery.googleapis.com/Table"
            
            	# Find KMS key name for the table
            	encryptionConfiguration := lib.get_default(asset.resource.data, "encryptionConfiguration", {})
            	kmsKeyName := lib.get_default(encryptionConfiguration, "kmsKeyName", "NOTFOUND")
            
            	# Check if KMS is enabled
            	kmsKeyName == "NOTFOUND"
            
            	message := sprintf("%v does not have the client managed encryption key setup.", [asset.name])
            	metadata := {"resource": asset.name}
            }
            #ENDINLINE