gcp_gke_legacy_abac_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.
#
# Check to see if GKE Legacy ABAC is disabled.

apiVersion: templates.gatekeeper.sh/v1alpha1
kind: ConstraintTemplate
metadata:
  name: gcp-gke-legacy-abac-v1
spec:
  crd:
    spec:
      names:
        kind: GCPGKELegacyAbacConstraintV1
      validation:
        openAPIV3Schema:
          properties: {}
  targets:
    validation.gcp.forsetisecurity.org:
      rego: | #INLINE("validator/gke_legacy_abac.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.GCPGKELegacyAbacConstraintV1
        
        import data.validator.gcp.lib as lib
        
        deny[{
        	"msg": message,
        	"details": metadata,
        }] {
        	constraint := input.constraint
        	asset := input.asset
        	asset.asset_type == "container.googleapis.com/Cluster"
        
        	container := asset.resource.data
        	enabled := legacy_abac_enabled(container)
        	enabled == true
        
        	message := sprintf("%v has legacy ABAC enabled.", [asset.name])
        	metadata := {"resource": asset.name}
        }
        
        ###########################
        # Rule Utilities
        ###########################
        legacy_abac_enabled(container) = legacy_abac_enabled {
        	legacy_abac := lib.get_default(container, "legacyAbac", {})
        	legacy_abac_enabled := lib.get_default(legacy_abac, "enabled", false)
        }
        #ENDINLINE