api: adding a gRPC call for revoking refresh tokens.

api/api.pb.go

@@ -28,6 +28,8 @@ It has these top-level messages:
 	RefreshTokenRef
 	ListRefreshReq
 	ListRefreshResp
+	RevokeRefreshReq
+	RevokeRefreshResp
 */
 package api
 
@@ -298,6 +300,26 @@ func (m *ListRefreshResp) GetRefreshTokens() []*RefreshTokenRef {
 	return nil
 }
 
+type RevokeRefreshReq struct {
+	// The "sub" claim returned in the ID Token.
+	UserId   string `protobuf:"bytes,1,opt,name=user_id,json=userId" json:"user_id,omitempty"`
+	ClientId string `protobuf:"bytes,2,opt,name=client_id,json=clientId" json:"client_id,omitempty"`
+}
+
+func (m *RevokeRefreshReq) Reset()                    { *m = RevokeRefreshReq{} }
+func (m *RevokeRefreshReq) String() string            { return proto.CompactTextString(m) }
+func (*RevokeRefreshReq) ProtoMessage()               {}
+func (*RevokeRefreshReq) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{19} }
+
+type RevokeRefreshResp struct {
+	NotFound bool `protobuf:"varint,1,opt,name=not_found,json=notFound" json:"not_found,omitempty"`
+}
+
+func (m *RevokeRefreshResp) Reset()                    { *m = RevokeRefreshResp{} }
+func (m *RevokeRefreshResp) String() string            { return proto.CompactTextString(m) }
+func (*RevokeRefreshResp) ProtoMessage()               {}
+func (*RevokeRefreshResp) Descriptor() ([]byte, []int) { return fileDescriptor0, []int{20} }
+
 func init() {
 	proto.RegisterType((*Client)(nil), "api.Client")
 	proto.RegisterType((*CreateClientReq)(nil), "api.CreateClientReq")
@@ -318,6 +340,8 @@ func init() {
 	proto.RegisterType((*RefreshTokenRef)(nil), "api.RefreshTokenRef")
 	proto.RegisterType((*ListRefreshReq)(nil), "api.ListRefreshReq")
 	proto.RegisterType((*ListRefreshResp)(nil), "api.ListRefreshResp")
+	proto.RegisterType((*RevokeRefreshReq)(nil), "api.RevokeRefreshReq")
+	proto.RegisterType((*RevokeRefreshResp)(nil), "api.RevokeRefreshResp")
 }
 
 // Reference imports to suppress errors if they are not otherwise used.
@@ -347,6 +371,9 @@ type DexClient interface {
 	GetVersion(ctx context.Context, in *VersionReq, opts ...grpc.CallOption) (*VersionResp, error)
 	// ListRefresh lists all the refresh token entries for a particular user.
 	ListRefresh(ctx context.Context, in *ListRefreshReq, opts ...grpc.CallOption) (*ListRefreshResp, error)
+	// RevokeRefresh revokes the refresh token for the provided user-client pair.
+	// Note that each user-client pair can have only one refresh token at a time.
+	RevokeRefresh(ctx context.Context, in *RevokeRefreshReq, opts ...grpc.CallOption) (*RevokeRefreshResp, error)
 }
 
 type dexClient struct {
@@ -429,6 +456,15 @@ func (c *dexClient) ListRefresh(ctx context.Context, in *ListRefreshReq, opts ..
 	return out, nil
 }
 
+func (c *dexClient) RevokeRefresh(ctx context.Context, in *RevokeRefreshReq, opts ...grpc.CallOption) (*RevokeRefreshResp, error) {
+	out := new(RevokeRefreshResp)
+	err := grpc.Invoke(ctx, "/api.Dex/RevokeRefresh", in, out, c.cc, opts...)
+	if err != nil {
+		return nil, err
+	}
+	return out, nil
+}
+
 // Server API for Dex service
 
 type DexServer interface {
@@ -448,6 +484,9 @@ type DexServer interface {
 	GetVersion(context.Context, *VersionReq) (*VersionResp, error)
 	// ListRefresh lists all the refresh token entries for a particular user.
 	ListRefresh(context.Context, *ListRefreshReq) (*ListRefreshResp, error)
+	// RevokeRefresh revokes the refresh token for the provided user-client pair.
+	// Note that each user-client pair can have only one refresh token at a time.
+	RevokeRefresh(context.Context, *RevokeRefreshReq) (*RevokeRefreshResp, error)
 }
 
 func RegisterDexServer(s *grpc.Server, srv DexServer) {
@@ -598,6 +637,24 @@ func _Dex_ListRefresh_Handler(srv interface{}, ctx context.Context, dec func(int
 	return interceptor(ctx, in, info, handler)
 }
 
+func _Dex_RevokeRefresh_Handler(srv interface{}, ctx context.Context, dec func(interface{}) error, interceptor grpc.UnaryServerInterceptor) (interface{}, error) {
+	in := new(RevokeRefreshReq)
+	if err := dec(in); err != nil {
+		return nil, err
+	}
+	if interceptor == nil {
+		return srv.(DexServer).RevokeRefresh(ctx, in)
+	}
+	info := &grpc.UnaryServerInfo{
+		Server:     srv,
+		FullMethod: "/api.Dex/RevokeRefresh",
+	}
+	handler := func(ctx context.Context, req interface{}) (interface{}, error) {
+		return srv.(DexServer).RevokeRefresh(ctx, req.(*RevokeRefreshReq))
+	}
+	return interceptor(ctx, in, info, handler)
+}
+
 var _Dex_serviceDesc = grpc.ServiceDesc{
 	ServiceName: "api.Dex",
 	HandlerType: (*DexServer)(nil),
@@ -634,6 +691,10 @@ var _Dex_serviceDesc = grpc.ServiceDesc{
 			MethodName: "ListRefresh",
 			Handler:    _Dex_ListRefresh_Handler,
 		},
+		{
+			MethodName: "RevokeRefresh",
+			Handler:    _Dex_RevokeRefresh_Handler,
+		},
 	},
 	Streams:  []grpc.StreamDesc{},
 	Metadata: fileDescriptor0,
@@ -642,52 +703,54 @@ var _Dex_serviceDesc = grpc.ServiceDesc{
 func init() { proto.RegisterFile("api/api.proto", fileDescriptor0) }
 
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-	0x01, 0x9d, 0xf2, 0x0c, 0x3a, 0x19, 0x5f, 0x90, 0xbf, 0x96, 0xd4, 0xf7, 0xa6, 0x1a, 0xaf, 0x96,
+	0x76, 0x46, 0x8e, 0xfc, 0xe4, 0xd1, 0x02, 0x39, 0x00, 0x78, 0x8f, 0xd2, 0xcc, 0x10, 0xe9, 0x68,
-	0x41, 0x95, 0x7b, 0xd9, 0xd4, 0xff, 0xcc, 0xff, 0x7f, 0x05, 0x00, 0x00, 0xff, 0xff, 0x57, 0x96,
+	0xb7, 0xc7, 0xf9, 0xea, 0x77, 0xb3, 0x80, 0x0e, 0x79, 0x01, 0x8d, 0x54, 0x4f, 0x92, 0xbf, 0xa6,
-	0xbe, 0xf0, 0x44, 0x07, 0x00, 0x00,
+	0xd4, 0x8f, 0x3d, 0xd5, 0x5f, 0x9e, 0x05, 0x75, 0xec, 0x6b, 0x68, 0x65, 0xba, 0x86, 0xac, 0x98,
+	0xae, 0xcd, 0xf6, 0x64, 0x7f, 0x75, 0x1e, 0xac, 0x18, 0x2e, 0xab, 0xfa, 0x8f, 0xff, 0xff, 0xaf,
+	0x00, 0x00, 0x00, 0xff, 0xff, 0x08, 0x02, 0xa2, 0x47, 0x02, 0x08, 0x00, 0x00,
 }

api/api.proto

@@ -30,7 +30,7 @@ message DeleteClientReq {
   string id = 1;
 }
 
-// DeleteClientResp determines if the. 
+// DeleteClientResp determines if the client is deleted successfully. 
 message DeleteClientResp {
   bool not_found = 1;
 }
@@ -120,6 +120,19 @@ message ListRefreshResp {
   repeated RefreshTokenRef refresh_tokens = 1;
 }
 
+// RevokeRefreshReq is a request to revoke the refresh token of the user-client pair.
+message RevokeRefreshReq {
+  // The "sub" claim returned in the ID Token.
+  string user_id = 1;
+  string client_id = 2;
+}
+
+// RevokeRefreshResp determines if the refresh token is revoked successfully. 
+message RevokeRefreshResp {
+  // Set to true is refresh token was not found and token could not be revoked.
+  bool not_found = 1;
+}
+
 // Dex represents the dex gRPC service.
 service Dex {
   // CreateClient creates a client.
@@ -138,4 +151,8 @@ service Dex {
   rpc GetVersion(VersionReq) returns (VersionResp) {};
   // ListRefresh lists all the refresh token entries for a particular user.
   rpc ListRefresh(ListRefreshReq) returns (ListRefreshResp) {};
+  // RevokeRefresh revokes the refresh token for the provided user-client pair.
+  //
+  // Note that each user-client pair can have only one refresh token at a time.
+  rpc RevokeRefresh(RevokeRefreshReq) returns (RevokeRefreshResp) {};
 }

server/api.go

@@ -16,7 +16,7 @@ import (
 
 // apiVersion increases every time a new call is added to the API. Clients should use this info
 // to determine if the server supports specific features.
-const apiVersion = 0
+const apiVersion = 1
 
 // NewAPI returns a server which implements the gRPC API interface.
 func NewAPI(s storage.Storage, logger logrus.FieldLogger) api.DexServer {
@@ -204,13 +204,13 @@ func (d dexAPI) ListRefresh(ctx context.Context, req *api.ListRefreshReq) (*api.
 	id := new(internal.IDTokenSubject)
 	if err := internal.Unmarshal(req.UserId, id); err != nil {
 		d.logger.Errorf("api: failed to unmarshal ID Token subject: %v", err)
-		return nil, fmt.Errorf("unmarshal ID Token subject: %v", err)
+		return nil, err
 	}
 
 	offlineSessions, err := d.s.GetOfflineSessions(id.UserId, id.ConnId)
 	if err != nil {
 		d.logger.Errorf("api: failed to list refresh tokens: %v", err)
-		return nil, fmt.Errorf("list refresh tokens: %v", err)
+		return nil, err
 	}
 
 	var refreshTokenRefs []*api.RefreshTokenRef
@@ -228,3 +228,39 @@ func (d dexAPI) ListRefresh(ctx context.Context, req *api.ListRefreshReq) (*api.
 		RefreshTokens: refreshTokenRefs,
 	}, nil
 }
+
+func (d dexAPI) RevokeRefresh(ctx context.Context, req *api.RevokeRefreshReq) (*api.RevokeRefreshResp, error) {
+	id := new(internal.IDTokenSubject)
+	if err := internal.Unmarshal(req.UserId, id); err != nil {
+		d.logger.Errorf("api: failed to unmarshal ID Token subject: %v", err)
+		return nil, err
+	}
+
+	var refreshID string
+	updater := func(old storage.OfflineSessions) (storage.OfflineSessions, error) {
+		if refreshID = old.Refresh[req.ClientId].ID; refreshID == "" {
+			return old, fmt.Errorf("user does not have a refresh token for the client = %s", req.ClientId)
+		}
+
+		// Remove entry from Refresh list of the OfflineSession object.
+		delete(old.Refresh, req.ClientId)
+
+		return old, nil
+	}
+
+	if err := d.s.UpdateOfflineSessions(id.UserId, id.ConnId, updater); err != nil {
+		if err == storage.ErrNotFound {
+			return &api.RevokeRefreshResp{NotFound: true}, nil
+		}
+		d.logger.Errorf("api: failed to update offline session object: %v", err)
+		return nil, err
+	}
+
+	// Delete the refresh token from the storage
+	if err := d.s.DeleteRefresh(refreshID); err != nil {
+		d.logger.Errorf("failed to delete refresh token: %v", err)
+		return nil, err
+	}
+
+	return &api.RevokeRefreshResp{}, nil
+}

server/api_test.go

@@ -4,9 +4,12 @@ import (
 	"context"
 	"os"
 	"testing"
+	"time"
 
 	"github.com/Sirupsen/logrus"
 	"github.com/coreos/dex/api"
+	"github.com/coreos/dex/server/internal"
+	"github.com/coreos/dex/storage"
 	"github.com/coreos/dex/storage/memory"
 )
 
@@ -65,3 +68,91 @@ func TestPassword(t *testing.T) {
 	}
 
 }
+
+// Attempts to list and revoke an exisiting refresh token.
+func TestRefreshToken(t *testing.T) {
+	logger := &logrus.Logger{
+		Out:       os.Stderr,
+		Formatter: &logrus.TextFormatter{DisableColors: true},
+		Level:     logrus.DebugLevel,
+	}
+
+	s := memory.New(logger)
+	serv := NewAPI(s, logger)
+
+	ctx := context.Background()
+
+	// Creating a storage with an existing refresh token and offline session for the user.
+	id := storage.NewID()
+	r := storage.RefreshToken{
+		ID:          id,
+		Token:       "bar",
+		Nonce:       "foo",
+		ClientID:    "client_id",
+		ConnectorID: "client_secret",
+		Scopes:      []string{"openid", "email", "profile"},
+		CreatedAt:   time.Now().UTC().Round(time.Millisecond),
+		LastUsed:    time.Now().UTC().Round(time.Millisecond),
+		Claims: storage.Claims{
+			UserID:        "1",
+			Username:      "jane",
+			Email:         "jane.doe@example.com",
+			EmailVerified: true,
+			Groups:        []string{"a", "b"},
+		},
+		ConnectorData: []byte(`{"some":"data"}`),
+	}
+
+	if err := s.CreateRefresh(r); err != nil {
+		t.Fatalf("create refresh token: %v", err)
+	}
+
+	tokenRef := storage.RefreshTokenRef{
+		ID:        r.ID,
+		ClientID:  r.ClientID,
+		CreatedAt: r.CreatedAt,
+		LastUsed:  r.LastUsed,
+	}
+
+	session := storage.OfflineSessions{
+		UserID:  r.Claims.UserID,
+		ConnID:  r.ConnectorID,
+		Refresh: make(map[string]*storage.RefreshTokenRef),
+	}
+	session.Refresh[tokenRef.ClientID] = &tokenRef
+
+	if err := s.CreateOfflineSessions(session); err != nil {
+		t.Fatalf("create offline session: %v", err)
+	}
+
+	subjectString, err := internal.Marshal(&internal.IDTokenSubject{
+		UserId: r.Claims.UserID,
+		ConnId: r.ConnectorID,
+	})
+	if err != nil {
+		t.Errorf("failed to marshal offline session ID: %v", err)
+	}
+
+	//Testing the api.
+	listReq := api.ListRefreshReq{
+		UserId: subjectString,
+	}
+
+	if _, err := serv.ListRefresh(ctx, &listReq); err != nil {
+		t.Fatalf("Unable to list refresh tokens for user: %v", err)
+	}
+
+	revokeReq := api.RevokeRefreshReq{
+		UserId:   subjectString,
+		ClientId: r.ClientID,
+	}
+
+	resp, err := serv.RevokeRefresh(ctx, &revokeReq)
+	if err != nil || resp.NotFound {
+		t.Fatalf("Unable to revoke refresh tokens for user: %v", err)
+	}
+
+	if resp, _ := serv.ListRefresh(ctx, &listReq); len(resp.RefreshTokens) != 0 {
+		t.Fatalf("Refresh token returned inspite of revoking it.")
+	}
+}