Serge Bazanski | cc25bdf | 2018-10-25 14:02:58 +0200 | [diff] [blame] | 1 | // Copyright 2015 go-swagger maintainers |
| 2 | // |
| 3 | // Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | // you may not use this file except in compliance with the License. |
| 5 | // You may obtain a copy of the License at |
| 6 | // |
| 7 | // http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | // |
| 9 | // Unless required by applicable law or agreed to in writing, software |
| 10 | // distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | // See the License for the specific language governing permissions and |
| 13 | // limitations under the License. |
| 14 | |
| 15 | package middleware |
| 16 | |
| 17 | import ( |
| 18 | "net/http" |
| 19 | "reflect" |
| 20 | |
| 21 | "github.com/go-openapi/errors" |
| 22 | "github.com/go-openapi/runtime" |
| 23 | "github.com/go-openapi/spec" |
| 24 | "github.com/go-openapi/strfmt" |
| 25 | ) |
| 26 | |
| 27 | // RequestBinder binds and validates the data from a http request |
| 28 | type untypedRequestBinder struct { |
| 29 | Spec *spec.Swagger |
| 30 | Parameters map[string]spec.Parameter |
| 31 | Formats strfmt.Registry |
| 32 | paramBinders map[string]*untypedParamBinder |
| 33 | } |
| 34 | |
| 35 | // NewRequestBinder creates a new binder for reading a request. |
| 36 | func newUntypedRequestBinder(parameters map[string]spec.Parameter, spec *spec.Swagger, formats strfmt.Registry) *untypedRequestBinder { |
| 37 | binders := make(map[string]*untypedParamBinder) |
| 38 | for fieldName, param := range parameters { |
| 39 | binders[fieldName] = newUntypedParamBinder(param, spec, formats) |
| 40 | } |
| 41 | return &untypedRequestBinder{ |
| 42 | Parameters: parameters, |
| 43 | paramBinders: binders, |
| 44 | Spec: spec, |
| 45 | Formats: formats, |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | // Bind perform the databinding and validation |
| 50 | func (o *untypedRequestBinder) Bind(request *http.Request, routeParams RouteParams, consumer runtime.Consumer, data interface{}) error { |
| 51 | val := reflect.Indirect(reflect.ValueOf(data)) |
| 52 | isMap := val.Kind() == reflect.Map |
| 53 | var result []error |
| 54 | debugLog("binding %d parameters for %s %s", len(o.Parameters), request.Method, request.URL.EscapedPath()) |
| 55 | for fieldName, param := range o.Parameters { |
| 56 | binder := o.paramBinders[fieldName] |
| 57 | debugLog("binding parameter %s for %s %s", fieldName, request.Method, request.URL.EscapedPath()) |
| 58 | var target reflect.Value |
| 59 | if !isMap { |
| 60 | binder.Name = fieldName |
| 61 | target = val.FieldByName(fieldName) |
| 62 | } |
| 63 | |
| 64 | if isMap { |
| 65 | tpe := binder.Type() |
| 66 | if tpe == nil { |
| 67 | if param.Schema.Type.Contains("array") { |
| 68 | tpe = reflect.TypeOf([]interface{}{}) |
| 69 | } else { |
| 70 | tpe = reflect.TypeOf(map[string]interface{}{}) |
| 71 | } |
| 72 | } |
| 73 | target = reflect.Indirect(reflect.New(tpe)) |
| 74 | |
| 75 | } |
| 76 | |
| 77 | if !target.IsValid() { |
| 78 | result = append(result, errors.New(500, "parameter name %q is an unknown field", binder.Name)) |
| 79 | continue |
| 80 | } |
| 81 | |
| 82 | if err := binder.Bind(request, routeParams, consumer, target); err != nil { |
| 83 | result = append(result, err) |
| 84 | continue |
| 85 | } |
| 86 | |
| 87 | if binder.validator != nil { |
| 88 | rr := binder.validator.Validate(target.Interface()) |
| 89 | if rr != nil && rr.HasErrors() { |
| 90 | result = append(result, rr.AsError()) |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | if isMap { |
| 95 | val.SetMapIndex(reflect.ValueOf(param.Name), target) |
| 96 | } |
| 97 | } |
| 98 | |
| 99 | if len(result) > 0 { |
| 100 | return errors.CompositeValidationError(result...) |
| 101 | } |
| 102 | |
| 103 | return nil |
| 104 | } |