Add the backchannel logout event

vendor/github.com/cs3org/reva/v2/pkg/events/users.go

@@ -88,3 +88,17 @@ func (PersonalDataExtracted) Unmarshal(v []byte) (interface{}, error) {
 	err := json.Unmarshal(v, &e)
 	return e, err
 }
+
+// BackchannelLogout is emitted when the callback from the identity provider is received
+type BackchannelLogout struct {
+	Executant *user.UserId
+	SessionId string
+	Timestamp *types.Timestamp
+}
+
+// Unmarshal to fulfill umarshaller interface
+func (BackchannelLogout) Unmarshal(v []byte) (interface{}, error) {
+	e := BackchannelLogout{}
+	err := json.Unmarshal(v, &e)
+	return e, err
+}

vendor/github.com/cs3org/reva/v2/pkg/utils/grpc.go

@@ -44,20 +44,30 @@ func GetServiceUserContext(serviceUserID string, gwc gateway.GatewayAPIClient, s
 
 // GetServiceUserContextWithContext returns an authenticated context of the given service user
 func GetServiceUserContextWithContext(ctx context.Context, gwc gateway.GatewayAPIClient, serviceUserID string, serviceUserSecret string) (context.Context, error) {
+	token, err := GetServiceUserToken(ctx, gwc, serviceUserID, serviceUserSecret)
+	if err != nil {
+		return nil, err
+	}
+
+	return metadata.AppendToOutgoingContext(ctx, ctxpkg.TokenHeader, token), nil
+}
+
+// GetServiceUserToken returns a reva authentication token for the given service user
+func GetServiceUserToken(ctx context.Context, gwc gateway.GatewayAPIClient, serviceUserID string, serviceUserSecret string) (string, error) {
 	authRes, err := gwc.Authenticate(ctx, &gateway.AuthenticateRequest{
 		Type:         "serviceaccounts",
 		ClientId:     serviceUserID,
 		ClientSecret: serviceUserSecret,
 	})
 	if err != nil {
-		return nil, err
+		return "", err
 	}
 
 	if err := checkStatusCode("authenticating service user", authRes.GetStatus().GetMessage(), authRes.GetStatus().GetCode()); err != nil {
-		return nil, err
+		return "", err
 	}
 
-	return metadata.AppendToOutgoingContext(ctx, ctxpkg.TokenHeader, authRes.Token), nil
+	return authRes.Token, nil
 }
 
 // GetUser gets the specified user