Пример #1
0
// BindValidRequest binds a params object to a request but only when the request is valid
// if the request is not valid an error will be returned
func (c *Context) BindValidRequest(request *http.Request, route *MatchedRoute, binder RequestBinder) error {
	var res []error

	requestContentType := "*/*"
	// check and validate content type, select consumer
	if httpkit.HasBody(request) {
		ct, _, err := httpkit.ContentType(request.Header)
		if err != nil {
			res = append(res, err)
		} else {
			if err := validateContentType(route.Consumes, ct); err != nil {
				res = append(res, err)
			}
			if len(res) == 0 {
				cons, ok := route.Consumers[ct]
				if !ok {
					res = append(res, errors.New(500, "no consumer registered for %s", ct))
				} else {
					route.Consumer = cons
					requestContentType = ct
				}
			}
		}
	}

	// check and validate the response format
	if len(res) == 0 && httpkit.HasBody(request) {
		if str := NegotiateContentType(request, route.Produces, requestContentType); str == "" {
			res = append(res, errors.InvalidResponseFormat(request.Header.Get(httpkit.HeaderAccept), route.Produces))
		}
	}

	// now bind the request with the provided binder
	// it's assumed the binder will also validate the request and return an error if the
	// request is invalid
	if binder != nil && len(res) == 0 {
		if err := binder.BindRequest(request, route); err != nil {
			return err
		}
	}

	if len(res) > 0 {
		return errors.CompositeValidationError(res...)
	}
	return nil
}
Пример #2
0
func (v *validation) contentType() {
	if len(v.result) == 0 && httpkit.HasBody(v.request) {
		ct, _, err := v.context.ContentType(v.request)
		if err != nil {
			v.result = append(v.result, err)
		}
		if len(v.result) == 0 {
			if err := validateContentType(v.route.Consumes, ct); err != nil {
				v.result = append(v.result, err)
			}
		}
		if ct != "" && v.route.Consumer == nil {
			cons, ok := v.route.Consumers[ct]
			if !ok {
				v.result = append(v.result, errors.New(500, "no consumer registered for %s", ct))
			} else {
				v.route.Consumer = cons
			}
		}
	}
}
Пример #3
0
func (p *untypedParamBinder) Bind(request *http.Request, routeParams RouteParams, consumer httpkit.Consumer, target reflect.Value) error {
	// fmt.Println("binding", p.name, "as", p.Type())
	switch p.parameter.In {
	case "query":
		data, custom, hasKey, err := p.readValue(httpkit.Values(request.URL.Query()), target)
		if err != nil {
			return err
		}
		if custom {
			return nil
		}

		return p.bindValue(data, hasKey, target)

	case "header":
		data, custom, hasKey, err := p.readValue(httpkit.Values(request.Header), target)
		if err != nil {
			return err
		}
		if custom {
			return nil
		}
		return p.bindValue(data, hasKey, target)

	case "path":
		data, custom, hasKey, err := p.readValue(routeParams, target)
		if err != nil {
			return err
		}
		if custom {
			return nil
		}
		return p.bindValue(data, hasKey, target)

	case "formData":
		var err error
		var mt string

		mt, _, e := httpkit.ContentType(request.Header)
		if e != nil {
			// because of the interface conversion go thinks the error is not nil
			// so we first check for nil and then set the err var if it's not nil
			err = e
		}

		if err != nil {
			return errors.InvalidContentType("", []string{"multipart/form-data", "application/x-www-form-urlencoded"})
		}

		if mt != "multipart/form-data" && mt != "application/x-www-form-urlencoded" {
			return errors.InvalidContentType(mt, []string{"multipart/form-data", "application/x-www-form-urlencoded"})
		}

		if mt == "multipart/form-data" {
			if err := request.ParseMultipartForm(defaultMaxMemory); err != nil {
				return errors.NewParseError(p.Name, p.parameter.In, "", err)
			}
		}

		if err := request.ParseForm(); err != nil {
			return errors.NewParseError(p.Name, p.parameter.In, "", err)
		}

		if p.parameter.Type == "file" {
			file, header, err := request.FormFile(p.parameter.Name)
			if err != nil {
				return errors.NewParseError(p.Name, p.parameter.In, "", err)
			}
			target.Set(reflect.ValueOf(httpkit.File{Data: file, Header: header}))
			return nil
		}

		if request.MultipartForm != nil {
			data, custom, hasKey, err := p.readValue(httpkit.Values(request.MultipartForm.Value), target)
			if err != nil {
				return err
			}
			if custom {
				return nil
			}
			return p.bindValue(data, hasKey, target)
		}
		data, custom, hasKey, err := p.readValue(httpkit.Values(request.PostForm), target)
		if err != nil {
			return err
		}
		if custom {
			return nil
		}
		return p.bindValue(data, hasKey, target)

	case "body":
		newValue := reflect.New(target.Type())
		if !httpkit.HasBody(request) {
			if p.parameter.Default != nil {
				target.Set(reflect.ValueOf(p.parameter.Default))
			}
			return nil
		}
		if err := consumer.Consume(request.Body, newValue.Interface()); err != nil {
			if err == io.EOF && p.parameter.Default != nil {
				target.Set(reflect.ValueOf(p.parameter.Default))
				return nil
			}
			tpe := p.parameter.Type
			if p.parameter.Format != "" {
				tpe = p.parameter.Format
			}
			return errors.InvalidType(p.Name, p.parameter.In, tpe, nil)
		}
		target.Set(reflect.Indirect(newValue))
		return nil
	default:
		return errors.New(500, fmt.Sprintf("invalid parameter location %q", p.parameter.In))
	}
}
Пример #4
0
func (v *validation) responseFormat() {
	if str := v.context.ResponseFormat(v.request, v.route.Produces); str == "" && httpkit.HasBody(v.request) {
		v.result = append(v.result, errors.InvalidResponseFormat(v.request.Header.Get(httpkit.HeaderAccept), v.route.Produces))
	}
}