func (PageResource) BeforeDelete(res kit.Resource, obj kit.Model, user kit.User) apperror.Error {
// Note: other relationship deletion handling happens in models BeforeDelete() hook.
// Files have to be deleted here, since they require the fileService.
// Delete files.
fileService := res.Registry().FileService()
m2m, err := res.Backend().M2M(obj, "Files")
if err != nil {
return err
}
files, err := m2m.All()
if err != nil {
return err
}
// Delete m2m relation.
if err := m2m.Clear(); err != nil {
return err
}
for _, file := range files {
if err := fileService.Delete(file.(kit.File), user); err != nil {
return err
}
}
return nil
}
// ApiFindOne verifies the session and returns user and profile in meta if valid.
func (SessionResourceHooks) ApiFindOne(res kit.Resource, rawId string, r kit.Request) kit.Response {
if rawId == "" {
return kit.NewErrorResponse("empty_token", "Empty token")
}
userService := res.Registry().UserService()
user, session, err := userService.VerifySession(rawId)
if err != nil {
return kit.NewErrorResponse(err)
}
meta := make(map[string]interface{})
if user != nil {
userData, err := res.Backend().ModelToMap(user, true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
meta["user"] = userData
if user.GetProfile() != nil {
profileData, err := res.Backend().ModelToMap(user.GetProfile(), true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
meta["profile"] = profileData
}
}
return &kit.AppResponse{
Data: session,
Meta: meta,
}
}
func (_ FilesResource) ApiCreate(res kit.Resource, obj kit.Model, r kit.Request) kit.Response {
// Verify that tmp path is set either in metadata or on model.
file := obj.(kit.File)
if file.GetTmpPath() == "" {
file.SetTmpPath(r.GetMeta().String("file"))
}
filePath := file.GetTmpPath()
if filePath == "" {
return kit.NewErrorResponse("no_tmp_path", "A tmp path must be set when creating a file", true)
}
tmpPath := getTmpPath(res)
if !strings.HasPrefix(filePath, tmpPath) && filePath[0] != '/' {
filePath = tmpPath + string(os.PathSeparator) + filePath
file.SetTmpPath(filePath)
}
// Build the file, save it to backend and persist it to the db.
err := res.Registry().FileService().BuildFile(file, r.GetUser(), true, true)
if err != nil {
kit.NewErrorResponse(err)
}
return &kit.AppResponse{
Data: file,
}
}
// Creating a session is equivalent to logging in.
func (hooks SessionResourceHooks) ApiCreate(res kit.Resource, obj kit.Model, r kit.Request) kit.Response {
userService := res.Registry().UserService()
meta := r.GetMeta()
isAnonymous, _ := meta.Bool("anonymous")
// Find user.
userIdentifier := meta.String("user")
adaptor := meta.String("adaptor")
data, _ := meta.Map("authData")
var user kit.User
if !isAnonymous {
if adaptor == "" {
return kit.NewErrorResponse("adaptor_missing", "Expected 'adaptor' in metadata.", true)
}
if data == nil {
kit.NewErrorResponse("no_or_invalid_auth_data", "Expected 'authData' dictionary in metadata.")
}
var err apperror.Error
user, err = userService.AuthenticateUser(userIdentifier, adaptor, data)
if err != nil {
return kit.NewErrorResponse(err)
}
}
session, err := userService.StartSession(user, r.GetFrontend())
if err != nil {
return kit.NewErrorResponse(err)
}
responseMeta := make(map[string]interface{})
if !isAnonymous {
userData, err := res.Backend().ModelToMap(user, true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
responseMeta["user"] = userData
if user.GetProfile() != nil {
profileData, err := res.Backend().ModelToMap(user.GetProfile(), true, false)
if err != nil {
return kit.NewErrorResponse("marshal_error", err)
}
responseMeta["profile"] = profileData
}
}
return &kit.AppResponse{
Data: session,
Meta: responseMeta,
}
}
func getTmpPath(res kit.Resource) string {
c := res.Registry().Config()
tmpPath := c.UPath("tmpUploadDir")
if tmpPath == "" {
tmpPath = c.TmpDir()
if tmpPath == "" {
panic("config.TmpDir() empty")
}
tmpPath = path.Join(tmpPath, "uploads")
}
return tmpPath
}
func (hooks UserResourceHooks) ApiCreate(res kit.Resource, obj kit.Model, r kit.Request) kit.Response {
meta := r.GetMeta()
adaptor := meta.String("adaptor")
if adaptor == "" {
return kit.NewErrorResponse("adaptor_missing", "Expected 'adaptor' in metadata.", true)
}
rawData, ok := meta.Get("authData")
if !ok {
return kit.NewErrorResponse("auth_data_missing", "Expected 'authData' in metadata.", true)
}
data, ok := rawData.(map[string]interface{})
if !ok {
return kit.NewErrorResponse("invalid_auth_data", "Invalid auth data: expected dictionary", true)
}
user := obj.(kit.User)
service := res.Registry().UserService()
// If a profile model was registered, and profile data is in meta,
// create the profile model.
if profiles := service.ProfileResource(); profiles != nil {
profile := profiles.CreateModel().(kit.UserProfile)
if rawData, ok := meta.Get("profile"); ok {
if data, ok := rawData.(map[string]interface{}); ok {
// Profile data present in meta.
// Update profile with data.
if err := res.ModelInfo().UpdateModelFromData(profile, data); err != nil {
return kit.NewErrorResponse("invalid_profile_data", "Invalid profile data.", err, true)
}
}
}
user.SetProfile(profile)
}
if err := service.CreateUser(user, adaptor, data); err != nil {
return kit.NewErrorResponse(err)
}
return &kit.AppResponse{
Data: user,
}
}
func (a *App) RegisterResource(res kit.Resource) {
if res.Backend() == nil {
if a.registry.DefaultBackend() == nil {
a.Logger().Panic("Registering resource without backend, but no default backend set.")
}
// Set backend.
res.SetBackend(a.registry.DefaultBackend())
}
if res.Registry() == nil {
res.SetRegistry(a.registry)
}
res.SetDebug(a.Debug())
// Allow a resource to register custom http routes and methods.
if res.Hooks() != nil {
// Handle http routes.
if resRoutes, ok := res.Hooks().(resources.ApiHttpRoutes); ok {
for _, route := range resRoutes.HttpRoutes(res) {
a.RegisterHttpHandler(route.Method(), route.Route(), route.Handler())
}
}
// Handle methods.
if resMethods, ok := res.Hooks().(resources.MethodsHook); ok {
for _, method := range resMethods.Methods(res) {
a.RegisterMethod(method)
}
}
}
a.registry.AddResource(res)
}
func (hooks FilesResource) HttpRoutes(res kit.Resource) []kit.HttpRoute {
maxRunning := res.Registry().Config().UInt("files.thumbGenerator.maxRunning", 10)
maxPerIPPerMinute := res.Registry().Config().UInt("files.thumbGenerator.maxPerIPPerMinute", 100)
maxQueueSize := res.Registry().Config().UInt("files.thumbGenerator.maxQueueSize", 100)
hooks.thumbnailRateLimiter = newRateLimiter(maxRunning, maxPerIPPerMinute, maxQueueSize)
routes := make([]kit.HttpRoute, 0)
// Upload route.
uploadOptionsHandler := func(registry kit.Registry, r kit.Request) (kit.Response, bool) {
header := r.GetHttpResponseWriter().Header()
allowedOrigins := registry.Config().UString("fileHandler.allowedOrigins", "*")
header.Set("Access-Control-Allow-Origin", allowedOrigins)
header.Set("Access-Control-Allow-Methods", "OPTIONS, POST")
allowedHeaders := registry.Config().UString("accessControl.allowedHeaders")
if allowedHeaders == "" {
allowedHeaders = "Authentication, Content-Type, Content-Range, Content-Disposition"
} else {
allowedHeaders += ", Authentication, Content-Type, Content-Range, Content-Disposition"
}
header.Set("Access-Control-Allow-Headers", allowedHeaders)
return &kit.AppResponse{
HttpStatus: 200,
RawData: []byte{},
}, true
}
uploadOptionsRoute := kit.NewHttpRoute("/api/file-upload", "OPTIONS", uploadOptionsHandler)
routes = append(routes, uploadOptionsRoute)
tmpPath := getTmpPath(res)
if tmpPath == "" {
panic("Empty tmp path")
}
uploadHandler := func(registry kit.Registry, r kit.Request) (kit.Response, bool) {
if registry.Config().UBool("fileHandler.requiresAuth", false) {
if r.GetUser() == nil {
return kit.NewErrorResponse("permission_denied", ""), false
}
}
var files []string
var err apperror.Error
if err == nil {
files, err = handleUpload(registry, tmpPath, r.GetHttpRequest())
if err != nil {
return kit.NewErrorResponse(err), false
}
}
data := map[string]interface{}{
"data": files,
}
return &kit.AppResponse{Data: data}, false
}
uploadRoute := kit.NewHttpRoute("/api/file-upload", "POST", uploadHandler)
routes = append(routes, uploadRoute)
serveFileHandler := func(registry kit.Registry, r kit.Request) (kit.Response, bool) {
file, err := registry.FileService().FindOne(r.GetContext().String("id"))
if err != nil {
return kit.NewErrorResponse(err), false
}
if file == nil {
return &kit.AppResponse{
HttpStatus: 404,
RawData: []byte("File not found"),
}, false
}
reader, err := file.Reader()
if err != nil {
return kit.NewErrorResponse(err), false
}
defer reader.Close()
w := r.GetHttpResponseWriter()
err = serveFile(w, r.GetHttpRequest(), file.GetMime(), file.GetSize(), reader)
reader.Close()
if err != nil {
registry.Logger().Errorf("Error while serving file %v(%v): %v", file.GetId(), file.GetBackendId(), err)
}
return nil, true
}
serveFileRoute := kit.NewHttpRoute("/files/:id/*rest", "GET", serveFileHandler)
routes = append(routes, serveFileRoute)
serveImageHandler := func(registry kit.Registry, r kit.Request) (kit.Response, bool) {
file, err := registry.FileService().FindOne(r.GetContext().String("id"))
if err != nil {
return kit.NewErrorResponse(err), false
}
if file == nil {
return &kit.AppResponse{
HttpStatus: 404,
RawData: []byte("File not found"),
}, false
}
if !file.GetIsImage() {
return &kit.AppResponse{
Error: &apperror.Err{
Code: "file_is_no_image",
Message: "The requested file is not an image",
},
}, false
}
httpRequest := r.GetHttpRequest()
query := httpRequest.URL.Query()
rawWidth := query.Get("width")
rawHeight := query.Get("height")
var width, height int64
if rawWidth != "" {
width, _ = strconv.ParseInt(rawWidth, 10, 64)
}
if rawHeight != "" {
height, _ = strconv.ParseInt(rawHeight, 10, 64)
}
rawFilters := query.Get("filters")
filters := strings.Split(rawFilters, ",")
thumbDir := registry.Config().UString("thumbnailDir")
if thumbDir == "" {
thumbDir = tmpPath + string(os.PathSeparator) + "thumbnails"
}
ip := strings.Split(httpRequest.RemoteAddr, ":")[0]
if ip == "" {
ip = httpRequest.Header.Get("X-Forwarded-For")
}
reader, size, err := hooks.getImageReader(registry, thumbDir, file, width, height, filters, ip)
if err != nil {
return kit.NewErrorResponse(err), false
}
w := r.GetHttpResponseWriter()
err = serveFile(w, httpRequest, file.GetMime(), size, reader)
reader.Close()
if err != nil {
registry.Logger().Errorf("Error while serving image %v(%v): %v", file.GetId(), file.GetBackendId(), err)
}
return nil, true
}
serveImageRoute := kit.NewHttpRoute("/images/:id/*rest", "GET", serveImageHandler)
routes = append(routes, serveImageRoute)
return routes
}