add permission service implementation for CI

I add a special ocis CI manager since our "real" implementation is in
the ocis repository, which I don't want to import into reva.

.drone.star

@@ -679,6 +679,7 @@ def litmusOcisSpacesDav():
           "/drone/src/cmd/revad/revad -c gateway.toml &",
           "/drone/src/cmd/revad/revad -c storage-home-ocis.toml &",
           "/drone/src/cmd/revad/revad -c storage-users-ocis.toml &",
+          "/drone/src/cmd/revad/revad -c permissions-ocis-ci.toml &",
           "/drone/src/cmd/revad/revad -c users.toml",
         ]
       },

cmd/revad/runtime/loader.go

@@ -38,6 +38,7 @@ import (
 	_ "github.com/cs3org/reva/pkg/ocm/invite/manager/loader"
 	_ "github.com/cs3org/reva/pkg/ocm/provider/authorizer/loader"
 	_ "github.com/cs3org/reva/pkg/ocm/share/manager/loader"
+	_ "github.com/cs3org/reva/pkg/permission/manager/loader"
 	_ "github.com/cs3org/reva/pkg/publicshare/manager/loader"
 	_ "github.com/cs3org/reva/pkg/rhttp/datatx/manager/loader"
 	_ "github.com/cs3org/reva/pkg/share/cache/loader"

internal/grpc/services/gateway/permissions.go

@@ -1,4 +1,4 @@
-// Copyright 2018-2021 CERN
+// Copyright 2021 CERN
 //
 // Licensed under the Apache License, Version 2.0 (the "License");
 // you may not use this file except in compliance with the License.

internal/grpc/services/loader/loader.go

@@ -33,6 +33,7 @@ import (
 	_ "github.com/cs3org/reva/internal/grpc/services/ocminvitemanager"
 	_ "github.com/cs3org/reva/internal/grpc/services/ocmproviderauthorizer"
 	_ "github.com/cs3org/reva/internal/grpc/services/ocmshareprovider"
+	_ "github.com/cs3org/reva/internal/grpc/services/permissions"
 	_ "github.com/cs3org/reva/internal/grpc/services/preferences"
 	_ "github.com/cs3org/reva/internal/grpc/services/publicshareprovider"
 	_ "github.com/cs3org/reva/internal/grpc/services/publicstorageprovider"

internal/grpc/services/permissions/permissions.go

@@ -0,0 +1,104 @@
+// Copyright 2021 CERN
+//
+// 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.
+//
+// In applying this license, CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+package permissions
+
+import (
+	"context"
+	"fmt"
+
+	permissions "github.com/cs3org/go-cs3apis/cs3/permissions/v1beta1"
+	rpc "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
+	"github.com/cs3org/reva/pkg/permission"
+	"github.com/cs3org/reva/pkg/permission/manager/registry"
+	"github.com/cs3org/reva/pkg/rgrpc"
+	"github.com/mitchellh/mapstructure"
+	"github.com/pkg/errors"
+	"google.golang.org/grpc"
+)
+
+func init() {
+	rgrpc.Register("permissions", New)
+}
+
+type config struct {
+	Driver  string                            `mapstructure:"driver" docs:"localhome;The permission driver to be used."`
+	Drivers map[string]map[string]interface{} `mapstructure:"drivers" docs:"url:pkg/permission/permission.go"`
+}
+
+func parseConfig(m map[string]interface{}) (*config, error) {
+	c := &config{}
+	if err := mapstructure.Decode(m, c); err != nil {
+		err = errors.Wrap(err, "error decoding conf")
+		return nil, err
+	}
+	return c, nil
+}
+
+type service struct {
+	manager permission.Manager
+}
+
+// New returns a new PermissionsServiceServer
+func New(m map[string]interface{}, ss *grpc.Server) (rgrpc.Service, error) {
+	c, err := parseConfig(m)
+	if err != nil {
+		return nil, err
+	}
+
+	f, ok := registry.NewFuncs[c.Driver]
+	if !ok {
+		return nil, fmt.Errorf("could not get permission manager '%s'", c.Driver)
+	}
+	manager, err := f(c.Drivers[c.Driver])
+	if err != nil {
+		return nil, err
+	}
+
+	service := &service{manager: manager}
+	return service, nil
+}
+
+func (s *service) Close() error {
+	return nil
+}
+
+func (s *service) UnprotectedEndpoints() []string {
+	return []string{}
+}
+
+func (s *service) Register(ss *grpc.Server) {
+	permissions.RegisterPermissionsAPIServer(ss, s)
+}
+
+func (s *service) CheckPermission(ctx context.Context, req *permissions.CheckPermissionRequest) (*permissions.CheckPermissionResponse, error) {
+	var subject string
+	switch ref := req.SubjectRef.Spec.(type) {
+	case *permissions.SubjectReference_UserId:
+		subject = ref.UserId.OpaqueId
+	case *permissions.SubjectReference_GroupId:
+		subject = ref.GroupId.OpaqueId
+	}
+	var status *rpc.Status
+	if ok := s.manager.CheckPermission(req.Permission, subject, req.Ref); ok {
+		status = &rpc.Status{Code: rpc.Code_CODE_OK}
+	} else {
+		status = &rpc.Status{Code: rpc.Code_CODE_PERMISSION_DENIED}
+	}
+	return &permissions.CheckPermissionResponse{Status: status}, nil
+}

pkg/permission/manager/loader/loader.go

@@ -0,0 +1,25 @@
+// Copyright 2021 CERN
+//
+// 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.
+//
+// In applying this license, CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+package loader
+
+import (
+	// Load permission manager drivers
+	_ "github.com/cs3org/reva/pkg/permission/manager/ocisci"
+	// Add your own here
+)

pkg/permission/manager/ocisci/ocisci.go

@@ -0,0 +1,43 @@
+// Copyright 2021 CERN
+//
+// 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.
+//
+// In applying this license, CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+package ocisci
+
+import (
+	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
+	"github.com/cs3org/reva/pkg/permission"
+	"github.com/cs3org/reva/pkg/permission/manager/registry"
+)
+
+func init() {
+	registry.Register("ocisci", New)
+}
+
+// New returns a new permission manager specific for the CI
+func New(c map[string]interface{}) (permission.Manager, error) {
+	return manager{}, nil
+}
+
+type manager struct {
+}
+
+func (m manager) CheckPermission(permission string, subject string, ref *provider.Reference) bool {
+	// We can currently return false all the time.
+	// Once we beginn testing roles we need to somehow check the roles of the users here
+	return false
+}

pkg/permission/manager/registry/registry.go

@@ -0,0 +1,34 @@
+// Copyright 2021 CERN
+//
+// 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.
+//
+// In applying this license, CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+package registry
+
+import "github.com/cs3org/reva/pkg/permission"
+
+// NewFunc is the function that permission managers
+// should register at init time.
+type NewFunc func(map[string]interface{}) (permission.Manager, error)
+
+// NewFuncs is a map containing all the registered share managers.
+var NewFuncs = map[string]NewFunc{}
+
+// Register registers a new permission manager new function.
+// Not safe for concurrent use. Safe for use from package init.
+func Register(name string, f NewFunc) {
+	NewFuncs[name] = f
+}

pkg/permission/permission.go

@@ -0,0 +1,27 @@
+// Copyright 2021 CERN
+//
+// 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.
+//
+// In applying this license, CERN does not waive the privileges and immunities
+// granted to it by virtue of its status as an Intergovernmental Organization
+// or submit itself to any jurisdiction.
+
+package permission
+
+import (
+	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
+)
+
+type Manager interface {
+	CheckPermission(permission string, subject string, ref *provider.Reference) bool
+}

tests/oc-integration-tests/drone/frontend.toml

@@ -59,7 +59,6 @@ files_namespace = "/users"
 webdav_namespace = "/home"
 
 [http.services.ocs]
-storage_registry_svc = "localhost:19000"
 
 [http.services.ocs.capabilities.capabilities.core.status]
 version = "10.0.11.5"

tests/oc-integration-tests/drone/gateway.toml

@@ -30,6 +30,8 @@ ocmcoresvc = "localhost:14000"
 ocmshareprovidersvc = "localhost:14000"
 ocminvitemanagersvc = "localhost:14000"
 ocmproviderauthorizersvc = "localhost:14000"
+# permissions
+permissionssvc = "localhost:10000"
 # other
 commit_share_to_storage_grant = true
 commit_share_to_storage_ref = true

tests/oc-integration-tests/drone/permissions-ocis-ci.toml

@@ -0,0 +1,12 @@
+# This config file will start a reva service that:
+# - serves the ocis ci permissions service
+[shared]
+jwt_secret = "Pive-Fumkiu4"
+
+[grpc]
+address = "0.0.0.0:10000"
+
+[grpc.services.permissions]
+driver = "ocisci"
+
+[grpc.services.publicshareprovider.drivers.ocisci]

tests/oc-integration-tests/drone/storage-home-ocis.toml

@@ -23,12 +23,14 @@ mount_id = "123e4567-e89b-12d3-a456-426655440000"
 expose_data_server = true
 data_server_url = "http://revad-services:12001/data"
 enable_home_creation = true
+gateway_addr = "0.0.0.0:19000"
 
 [grpc.services.storageprovider.drivers.ocis]
 root = "/drone/src/tmp/reva/data"
 enable_home = true
 treetime_accounting = true
 treesize_accounting = true
+gateway_addr = "0.0.0.0:19000"
 
 # we have a locally running dataprovider
 [http]

tests/oc-integration-tests/drone/storage-users-ocis.toml

@@ -19,12 +19,14 @@ mount_path = "/users"
 mount_id = "123e4567-e89b-12d3-a456-426655440000"
 expose_data_server = true
 data_server_url = "http://revad-services:11001/data"
+gateway_addr = "0.0.0.0:19000"
 
 [grpc.services.storageprovider.drivers.ocis]
 root = "/drone/src/tmp/reva/data"
 treetime_accounting = true
 treesize_accounting = true
 userprovidersvc = "localhost:18000"
+gateway_addr = "0.0.0.0:19000"
 
 # we have a locally running dataprovider
 [http]

tests/oc-integration-tests/local/frontend.toml

@@ -50,7 +50,6 @@ webdav_namespace = "/home"
 
 # serve /ocs which contains the sharing and user provisioning api of owncloud classic
 [http.services.ocs]
-storage_registry_svc = "localhost:19000"
 
 [http.services.ocs.capabilities.capabilities.core.status]
 version = "10.0.11.5"

tests/oc-integration-tests/local/gateway.toml

@@ -30,6 +30,8 @@ ocmcoresvc = "localhost:14000"
 ocmshareprovidersvc = "localhost:14000"
 ocminvitemanagersvc = "localhost:14000"
 ocmproviderauthorizersvc = "localhost:14000"
+# permissions
+permissionssvc = "localhost:10000"
 # other
 commit_share_to_storage_grant = true
 commit_share_to_storage_ref = true

tests/oc-integration-tests/local/permissions-ocis-ci.toml

@@ -0,0 +1,12 @@
+# This config file will start a reva service that:
+# - serves the ocis ci permissions service
+[shared]
+jwt_secret = "Pive-Fumkiu4"
+
+[grpc]
+address = "0.0.0.0:10000"
+
+[grpc.services.permissions]
+driver = "ocisci"
+
+[grpc.services.publicshareprovider.drivers.ocisci]

tests/oc-integration-tests/local/storage-home.toml

@@ -30,6 +30,7 @@ root = "/var/tmp/reva/data"
 enable_home = true
 treetime_accounting = true
 treesize_accounting = true
+gateway_addr = "0.0.0.0:19000"
 #user_layout = 
 # do we need owner for users?
 #owner = 95cb8724-03b2-11eb-a0a6-c33ef8ef53ad 

tests/oc-integration-tests/local/storage-users.toml

@@ -38,3 +38,4 @@ root = "/var/tmp/reva/data"
 enable_home = false
 treetime_accounting = true
 treesize_accounting = true
+gateway_addr = "0.0.0.0:19000"