Nextcloud storage integration tests & add Nextcloud drivers for auth …

…and user (#2043)

changelog/unreleased/nextcloud-user-backend.md

@@ -0,0 +1,6 @@
+Enhancement: Nextcloud user backend
+
+Adds Nextcloud as a user backend (Nextcloud drivers for 'auth' and 'user').
+Also adds back the Nextcloud storage integration tests.
+
+https://github.com/cs3org/reva/pull/2043

examples/nextcloud-integration/revad.toml

@@ -0,0 +1,140 @@
+[shared]
+gatewaysvc = "localhost:19000"
+
+[grpc]
+address = "0.0.0.0:19000"
+
+[grpc.services.gateway]
+authregistrysvc = "localhost:19000"
+appprovidersvc = "localhost:19000"
+appregistry = "localhost:19000"
+storageregistrysvc = "localhost:19000"
+preferencessvc = "localhost:19000"
+userprovidersvc = "localhost:19000"
+usershareprovidersvc = "localhost:19000"
+publicshareprovidersvc = "localhost:19000"
+ocmcoresvc = "localhost:19000"
+ocmshareprovidersvc = "localhost:19000"
+ocminvitemanagersvc = "localhost:19000"
+ocmproviderauthorizersvc = "localhost:19000"
+commit_share_to_storage_grant = false
+datagateway = "http://localhost:19001/data"
+transfer_expires = 6 # give it a moment
+
+[grpc.services.authregistry]
+driver = "static"
+
+[grpc.services.authregistry.drivers.static.rules]
+basic = "localhost:19000"
+
+[grpc.services.storageregistry]
+driver = "static"
+
+[grpc.services.storageregistry.drivers.static]
+home_provider = "/home"
+
+[grpc.services.storageregistry.drivers.static.rules]
+"/home" = {"address" = "localhost:19000"}
+"123e4567-e89b-12d3-a456-426655440000" = {"address" = "localhost:19000"}
+
+[grpc.services.usershareprovider]
+driver = "memory"
+
+[grpc.services.ocmcore]
+driver = "json"
+
+# Note that ocmcore and ocmshareprovider should use the same file for storing the shares.
+[grpc.services.ocmcore.drivers.json]
+file = "/var/tmp/reva/shares_server_1.json"
+
+[grpc.services.ocminvitemanager]
+driver = "json"
+
+[grpc.services.ocmshareprovider]
+driver = "json"
+
+[grpc.services.ocmshareprovider.drivers.json]
+file = "/var/tmp/reva/shares_server_1.json"
+
+[grpc.services.ocmproviderauthorizer]
+driver = "json"
+
+[grpc.services.ocmproviderauthorizer.drivers.json]
+providers = "/etc/revad/providers.json"
+
+[grpc.services.publicshareprovider]
+driver = "memory"
+
+[grpc.services.appprovider]
+driver = "demo"
+iopsecret = "testsecret"
+wopiurl = "http://0.0.0.0:8880/"
+wopibridgeurl = "http://localhost:8000/wopib"
+
+[grpc.services.appregistry]
+driver = "static"
+
+[grpc.services.appregistry.static.rules]
+"text/plain" = "localhost:19000"
+"text/markdown" = "localhost:19000"
+"application/compressed-markdown" = "localhost:19000"
+"application/vnd.oasis.opendocument.text" = "localhost:19000"
+"application/vnd.oasis.opendocument.spreadsheet" = "localhost:19000"
+"application/vnd.oasis.opendocument.presentation" = "localhost:19000"
+
+[grpc.services.storageprovider]
+driver = "nextcloud"
+mount_path = "/home"
+mount_id = "123e4567-e89b-12d3-a456-426655440000"
+expose_data_server = true
+data_server_url = "http://127.0.0.1:19001/data"
+enable_home_creation = true
+disable_tus = true
+
+[grpc.services.storageprovider.mimetypes]
+".zmd" = "application/compressed-markdown"
+
+[grpc.services.storageprovider.drivers.nextcloud]
+end_point = "http://localhost/apps/sciencemesh/"
+user_layout = "{{.Username}}"
+
+
+[grpc.services.authprovider]
+auth_manager = "nextcloud"
+[grpc.services.authprovider.drivers.nextcloud]
+end_point = "http://localhost/apps/sciencemesh/"
+
+[grpc.services.userprovider]
+driver = "nextcloud"
+[grpc.services.userprovider.drivers.nextcloud]
+end_point = "http://localhost/apps/sciencemesh/"
+
+[http]
+enabled_services = ["ocmd"]
+enabled_middlewares = ["providerauthorizer", "cors"]
+address = "0.0.0.0:19001"
+
+[http.services.dataprovider]
+driver = "nextcloud"
+
+[http.services.prometheus]
+[http.services.sysinfo]
+
+[http.services.dataprovider.drivers.localhome]
+user_layout = "{{.Username}}"
+
+[http.services.ocmd]
+prefix = "ocm"
+
+[http.middlewares.providerauthorizer]
+driver = "json"
+
+[http.middlewares.providerauthorizer.drivers.json]
+providers = "/etc/revad/providers.json"
+
+[http.services.ocs]
+prefix = "ocs"
+
+[http.services.ocdav]
+
+[http.middlewares.cors]

pkg/auth/manager/loader/loader.go

@@ -26,6 +26,7 @@ import (
 	_ "github.com/cs3org/reva/pkg/auth/manager/json"
 	_ "github.com/cs3org/reva/pkg/auth/manager/ldap"
 	_ "github.com/cs3org/reva/pkg/auth/manager/machine"
+	_ "github.com/cs3org/reva/pkg/auth/manager/nextcloud"
 	_ "github.com/cs3org/reva/pkg/auth/manager/oidc"
 	_ "github.com/cs3org/reva/pkg/auth/manager/publicshares"
 	// Add your own here

pkg/auth/manager/nextcloud/nextcloud.go

@@ -0,0 +1,152 @@
+// Copyright 2018-2021 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 nextcloud verifies a clientID and clientSecret against a Nextcloud backend.
+package nextcloud
+
+import (
+	"context"
+	"encoding/json"
+	"io"
+	"net/http"
+	"strings"
+
+	authpb "github.com/cs3org/go-cs3apis/cs3/auth/provider/v1beta1"
+	user "github.com/cs3org/go-cs3apis/cs3/identity/user/v1beta1"
+	"github.com/cs3org/reva/pkg/appctx"
+	"github.com/cs3org/reva/pkg/auth"
+	"github.com/cs3org/reva/pkg/auth/manager/registry"
+	"github.com/mitchellh/mapstructure"
+	"github.com/pkg/errors"
+)
+
+func init() {
+	registry.Register("nextcloud", New)
+}
+
+type mgr struct {
+	client   *http.Client
+	endPoint string
+}
+
+type config struct {
+	EndPoint string `mapstructure:"endpoint" docs:";The Nextcloud backend endpoint for user check"`
+}
+
+// Action describes a REST request to forward to the Nextcloud backend
+type Action struct {
+	verb     string
+	username string
+	argS     string
+}
+
+func (c *config) init() {
+}
+
+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
+}
+
+// New returns an auth manager implementation that verifies against a Nextcloud backend.
+func New(m map[string]interface{}) (auth.Manager, error) {
+	c, err := parseConfig(m)
+	if err != nil {
+		return nil, err
+	}
+	c.init()
+
+	return &mgr{
+		endPoint: c.EndPoint, // e.g. "http://nc/apps/sciencemesh/"
+		client:   &http.Client{},
+	}, nil
+}
+
+func (am *mgr) Configure(ml map[string]interface{}) error {
+	return nil
+}
+
+func (am *mgr) do(ctx context.Context, a Action) (int, []byte, error) {
+	log := appctx.GetLogger(ctx)
+	// user, err := getUser(ctx)
+	// if err != nil {
+	// 	return 0, nil, err
+	// }
+	// url := am.endPoint + "~" + a.username + "/api/" + a.verb
+	url := "http://localhost/apps/sciencemesh/~" + a.username + "/api/" + a.verb
+	log.Info().Msgf("am.do %s %s", url, a.argS)
+	req, err := http.NewRequest(http.MethodPost, url, strings.NewReader(a.argS))
+	if err != nil {
+		return 0, nil, err
+	}
+
+	req.Header.Set("Content-Type", "application/json")
+	resp, err := am.client.Do(req)
+	if err != nil {
+		return 0, nil, err
+	}
+
+	defer resp.Body.Close()
+	body, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return 0, nil, err
+	}
+
+	log.Info().Msgf("am.do response %d %s", resp.StatusCode, body)
+	return resp.StatusCode, body, nil
+}
+
+// Authenticate method as defined in https://github.com/cs3org/reva/blob/28500a8/pkg/auth/auth.go#L31-L33
+func (am *mgr) Authenticate(ctx context.Context, clientID, clientSecret string) (*user.User, map[string]*authpb.Scope, error) {
+	var params = map[string]string{
+		"password": clientSecret,
+		// "username": clientID,
+	}
+	bodyStr, err := json.Marshal(params)
+	if err != nil {
+		return nil, nil, err
+	}
+	log := appctx.GetLogger(ctx)
+	log.Info().Msgf("Authenticate %s %s", clientID, bodyStr)
+
+	statusCode, _, err := am.do(ctx, Action{"Authenticate", clientID, string(bodyStr)})
+
+	if err != nil {
+		return nil, nil, err
+	}
+
+	if statusCode != 200 {
+		return nil, nil, errors.New("Username/password not recognized by Nextcloud backend")
+	}
+	user := &user.User{
+		Username: clientID,
+		Id: &user.UserId{
+			OpaqueId: clientID,
+			Idp:      "localhost",
+			Type:     1,
+		},
+		Mail:        clientID,
+		DisplayName: clientID,
+		Groups:      nil,
+	}
+	return user, nil, nil
+}