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authprovider.go
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authprovider.go
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// 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 authprovider
import (
"context"
"fmt"
"path/filepath"
provider "github.com/cs3org/go-cs3apis/cs3/auth/provider/v1beta1"
"github.com/cs3org/reva/v2/pkg/appctx"
"github.com/cs3org/reva/v2/pkg/auth"
"github.com/cs3org/reva/v2/pkg/auth/manager/registry"
"github.com/cs3org/reva/v2/pkg/errtypes"
"github.com/cs3org/reva/v2/pkg/plugin"
"github.com/cs3org/reva/v2/pkg/rgrpc"
"github.com/cs3org/reva/v2/pkg/rgrpc/status"
"github.com/mitchellh/mapstructure"
"github.com/pkg/errors"
"google.golang.org/grpc"
)
func init() {
rgrpc.Register("authprovider", New)
}
type config struct {
AuthManager string `mapstructure:"auth_manager"`
AuthManagers map[string]map[string]interface{} `mapstructure:"auth_managers"`
}
func (c *config) init() {
if c.AuthManager == "" {
c.AuthManager = "json"
}
}
type service struct {
authmgr auth.Manager
conf *config
plugin *plugin.RevaPlugin
}
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
}
c.init()
return c, nil
}
func getAuthManager(manager string, m map[string]map[string]interface{}) (auth.Manager, *plugin.RevaPlugin, error) {
if manager == "" {
return nil, nil, errtypes.InternalError("authsvc: driver not configured for auth manager")
}
p, err := plugin.Load("authprovider", manager)
if err == nil {
authManager, ok := p.Plugin.(auth.Manager)
if !ok {
return nil, nil, fmt.Errorf("could not assert the loaded plugin")
}
pluginConfig := filepath.Base(manager)
err = authManager.Configure(m[pluginConfig])
if err != nil {
return nil, nil, err
}
return authManager, p, nil
} else if _, ok := err.(errtypes.NotFound); ok {
if f, ok := registry.NewFuncs[manager]; ok {
authmgr, err := f(m[manager])
return authmgr, nil, err
}
} else {
return nil, nil, err
}
return nil, nil, errtypes.NotFound(fmt.Sprintf("authsvc: driver %s not found for auth manager", manager))
}
// New returns a new AuthProviderServiceServer.
func New(m map[string]interface{}, ss *grpc.Server) (rgrpc.Service, error) {
c, err := parseConfig(m)
if err != nil {
return nil, err
}
authManager, plug, err := getAuthManager(c.AuthManager, c.AuthManagers)
if err != nil {
return nil, err
}
svc := &service{
conf: c,
authmgr: authManager,
plugin: plug,
}
return svc, nil
}
func (s *service) Close() error {
if s.plugin != nil {
s.plugin.Kill()
}
return nil
}
func (s *service) UnprotectedEndpoints() []string {
return []string{"/cs3.auth.provider.v1beta1.ProviderAPI/Authenticate"}
}
func (s *service) Register(ss *grpc.Server) {
provider.RegisterProviderAPIServer(ss, s)
}
func (s *service) Authenticate(ctx context.Context, req *provider.AuthenticateRequest) (*provider.AuthenticateResponse, error) {
log := appctx.GetLogger(ctx)
username := req.ClientId
password := req.ClientSecret
u, scope, err := s.authmgr.Authenticate(ctx, username, password)
switch v := err.(type) {
case nil:
log.Info().Msgf("user %s authenticated", u.Id)
return &provider.AuthenticateResponse{
Status: status.NewOK(ctx),
User: u,
TokenScope: scope,
}, nil
case errtypes.InvalidCredentials:
return &provider.AuthenticateResponse{
Status: status.NewPermissionDenied(ctx, v, "wrong password"),
}, nil
case errtypes.NotFound:
log.Debug().Str("client_id", username).Msg("unknown client id")
return &provider.AuthenticateResponse{
Status: status.NewNotFound(ctx, "unknown client id"),
}, nil
default:
err = errors.Wrap(err, "authsvc: error in Authenticate")
return &provider.AuthenticateResponse{
Status: status.NewUnauthenticated(ctx, err, "error authenticating user"),
}, nil
}
}