add authprovider owncloudsql

Signed-off-by: Jörn Friedrich Dreyer <jfd@butonic.de>

changelog/unreleased/authprovider-owncloudsql.md

@@ -0,0 +1,5 @@
+Enhancement: add authprovider owncloudsql
+
+We added an authprovider that can be configured to authenticate against an owncloud classic mysql database. It verifies the password from the oc_users table.
+
+https://github.com/cs3org/reva/pull/2119

pkg/auth/manager/loader/loader.go

@@ -28,6 +28,7 @@ import (
 	_ "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/owncloudsql"
 	_ "github.com/cs3org/reva/pkg/auth/manager/publicshares"
 	// Add your own here
 )

pkg/auth/manager/owncloudsql/accounts/accounts.go

@@ -0,0 +1,162 @@
+// 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 accounts
+
+import (
+	"context"
+	"database/sql"
+	"strings"
+	"time"
+
+	"github.com/cs3org/reva/pkg/appctx"
+	"github.com/pkg/errors"
+)
+
+// Accounts represents oc10-style Accounts
+type Accounts struct {
+	driver                                     string
+	db                                         *sql.DB
+	joinUsername, joinUUID, enableMedialSearch bool
+	selectSQL                                  string
+}
+
+// NewMysql returns a new accounts instance connecting to a MySQL database
+func NewMysql(dsn string, joinUsername, joinUUID, enableMedialSearch bool) (*Accounts, error) {
+	sqldb, err := sql.Open("mysql", dsn)
+	if err != nil {
+		return nil, errors.Wrap(err, "error connecting to the database")
+	}
+	sqldb.SetConnMaxLifetime(time.Minute * 3)
+	sqldb.SetMaxOpenConns(10)
+	sqldb.SetMaxIdleConns(10)
+
+	err = sqldb.Ping()
+	if err != nil {
+		return nil, errors.Wrap(err, "error connecting to the database")
+	}
+
+	return New("mysql", sqldb, joinUsername, joinUUID, enableMedialSearch)
+}
+
+// New returns a new accounts instance connecting to the given sql.DB
+func New(driver string, sqldb *sql.DB, joinUsername, joinUUID, enableMedialSearch bool) (*Accounts, error) {
+
+	sel := "SELECT id, email, user_id, display_name, quota, last_login, backend, home, state, password"
+	from := `
+		FROM oc_accounts a
+		LEFT JOIN oc_users u
+			ON a.user_id=u.uid
+		`
+	if joinUsername {
+		sel += ", p.configvalue AS username"
+		from += `LEFT JOIN oc_preferences p
+						ON a.user_id=p.userid
+						AND p.appid='core'
+						AND p.configkey='username'`
+	} else {
+		// fallback to user_id as username
+		sel += ", user_id AS username"
+	}
+	if joinUUID {
+		sel += ", p2.configvalue AS ownclouduuid"
+		from += `LEFT JOIN oc_preferences p2
+						ON a.user_id=p2.userid
+						AND p2.appid='core'
+						AND p2.configkey='ownclouduuid'`
+	} else {
+		// fallback to user_id as ownclouduuid
+		sel += ", user_id AS ownclouduuid"
+	}
+
+	return &Accounts{
+		driver:             driver,
+		db:                 sqldb,
+		joinUsername:       joinUsername,
+		joinUUID:           joinUUID,
+		enableMedialSearch: enableMedialSearch,
+		selectSQL:          sel + from,
+	}, nil
+}
+
+// Account stores information about accounts.
+type Account struct {
+	ID           uint64
+	Email        sql.NullString
+	UserID       string
+	DisplayName  sql.NullString
+	Quota        sql.NullString
+	LastLogin    int
+	Backend      string
+	Home         string
+	State        int8
+	PasswordHash string         // from oc_users
+	Username     sql.NullString // optional comes from the oc_preferences
+	OwnCloudUUID sql.NullString // optional comes from the oc_preferences
+}
+
+func (as *Accounts) rowToAccount(ctx context.Context, row Scannable) (*Account, error) {
+	a := Account{}
+	if err := row.Scan(&a.ID, &a.Email, &a.UserID, &a.DisplayName, &a.Quota, &a.LastLogin, &a.Backend, &a.Home, &a.State, &a.PasswordHash, &a.Username, &a.OwnCloudUUID); err != nil {
+		appctx.GetLogger(ctx).Error().Err(err).Msg("could not scan row, skipping")
+		return nil, err
+	}
+
+	return &a, nil
+}
+
+// Scannable describes the interface providing a Scan method
+type Scannable interface {
+	Scan(...interface{}) error
+}
+
+// GetAccountByLogin fetches an account by mail or username
+func (as *Accounts) GetAccountByLogin(ctx context.Context, login string) (*Account, error) {
+	var row *sql.Row
+	username := strings.ToLower(login) // usernames are lowercased in owncloud classic
+	if as.joinUsername {
+		row = as.db.QueryRowContext(ctx, as.selectSQL+" WHERE a.email=? OR a.lower_user_id=? OR p.configvalue=?", login, username, login)
+	} else {
+		row = as.db.QueryRowContext(ctx, as.selectSQL+" WHERE a.email=? OR a.lower_user_id=?", login, username)
+	}
+
+	return as.rowToAccount(ctx, row)
+}
+
+// GetAccountGroups reads the groups for an account
+func (as *Accounts) GetAccountGroups(ctx context.Context, uid string) ([]string, error) {
+	rows, err := as.db.QueryContext(ctx, "SELECT gid FROM oc_group_user WHERE uid=?", uid)
+	if err != nil {
+		return nil, err
+	}
+	defer rows.Close()
+
+	var group string
+	groups := []string{}
+	for rows.Next() {
+		if err := rows.Scan(&group); err != nil {
+			appctx.GetLogger(ctx).Error().Err(err).Msg("could not scan row, skipping")
+			continue
+		}
+		groups = append(groups, group)
+	}
+	if err = rows.Err(); err != nil {
+		return nil, err
+	}
+	return groups, nil
+}

pkg/auth/manager/owncloudsql/accounts/accounts_suite_test.go

@@ -0,0 +1,31 @@
+// 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 accounts_test
+
+import (
+	"testing"
+
+	. "github.com/onsi/ginkgo"
+	. "github.com/onsi/gomega"
+)
+
+func TestAccounts(t *testing.T) {
+	RegisterFailHandler(Fail)
+	RunSpecs(t, "Accounts Suite")
+}