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 | "mime" |
| 19 | "net/http" |
| 20 | "strings" |
| 21 | |
| 22 | "github.com/go-openapi/errors" |
| 23 | "github.com/go-openapi/runtime" |
| 24 | "github.com/go-openapi/swag" |
| 25 | ) |
| 26 | |
| 27 | type validation struct { |
| 28 | context *Context |
| 29 | result []error |
| 30 | request *http.Request |
| 31 | route *MatchedRoute |
| 32 | bound map[string]interface{} |
| 33 | } |
| 34 | |
| 35 | // ContentType validates the content type of a request |
| 36 | func validateContentType(allowed []string, actual string) error { |
| 37 | debugLog("validating content type for %q against [%s]", actual, strings.Join(allowed, ", ")) |
| 38 | if len(allowed) == 0 { |
| 39 | return nil |
| 40 | } |
| 41 | mt, _, err := mime.ParseMediaType(actual) |
| 42 | if err != nil { |
| 43 | return errors.InvalidContentType(actual, allowed) |
| 44 | } |
| 45 | if swag.ContainsStringsCI(allowed, mt) { |
| 46 | return nil |
| 47 | } |
| 48 | if swag.ContainsStringsCI(allowed, "*/*") { |
| 49 | return nil |
| 50 | } |
| 51 | parts := strings.Split(actual, "/") |
| 52 | if len(parts) == 2 && swag.ContainsStringsCI(allowed, parts[0]+"/*") { |
| 53 | return nil |
| 54 | } |
| 55 | return errors.InvalidContentType(actual, allowed) |
| 56 | } |
| 57 | |
| 58 | func validateRequest(ctx *Context, request *http.Request, route *MatchedRoute) *validation { |
| 59 | debugLog("validating request %s %s", request.Method, request.URL.EscapedPath()) |
| 60 | validate := &validation{ |
| 61 | context: ctx, |
| 62 | request: request, |
| 63 | route: route, |
| 64 | bound: make(map[string]interface{}), |
| 65 | } |
| 66 | |
| 67 | validate.contentType() |
| 68 | if len(validate.result) == 0 { |
| 69 | validate.responseFormat() |
| 70 | } |
| 71 | if len(validate.result) == 0 { |
| 72 | validate.parameters() |
| 73 | } |
| 74 | |
| 75 | return validate |
| 76 | } |
| 77 | |
| 78 | func (v *validation) parameters() { |
| 79 | debugLog("validating request parameters for %s %s", v.request.Method, v.request.URL.EscapedPath()) |
| 80 | if result := v.route.Binder.Bind(v.request, v.route.Params, v.route.Consumer, v.bound); result != nil { |
| 81 | if result.Error() == "validation failure list" { |
| 82 | for _, e := range result.(*errors.Validation).Value.([]interface{}) { |
| 83 | v.result = append(v.result, e.(error)) |
| 84 | } |
| 85 | return |
| 86 | } |
| 87 | v.result = append(v.result, result) |
| 88 | } |
| 89 | } |
| 90 | |
| 91 | func (v *validation) contentType() { |
| 92 | if len(v.result) == 0 && runtime.HasBody(v.request) { |
| 93 | debugLog("validating body content type for %s %s", v.request.Method, v.request.URL.EscapedPath()) |
| 94 | ct, _, req, err := v.context.ContentType(v.request) |
| 95 | if err != nil { |
| 96 | v.result = append(v.result, err) |
| 97 | } else { |
| 98 | v.request = req |
| 99 | } |
| 100 | |
| 101 | if len(v.result) == 0 { |
| 102 | if err := validateContentType(v.route.Consumes, ct); err != nil { |
| 103 | v.result = append(v.result, err) |
| 104 | } |
| 105 | } |
| 106 | if ct != "" && v.route.Consumer == nil { |
| 107 | cons, ok := v.route.Consumers[ct] |
| 108 | if !ok { |
| 109 | v.result = append(v.result, errors.New(500, "no consumer registered for %s", ct)) |
| 110 | } else { |
| 111 | v.route.Consumer = cons |
| 112 | } |
| 113 | } |
| 114 | } |
| 115 | } |
| 116 | |
| 117 | func (v *validation) responseFormat() { |
| 118 | if str, rCtx := v.context.ResponseFormat(v.request, v.route.Produces); str == "" && runtime.HasBody(v.request) { |
| 119 | v.request = rCtx |
| 120 | v.result = append(v.result, errors.InvalidResponseFormat(v.request.Header.Get(runtime.HeaderAccept), v.route.Produces)) |
| 121 | } |
| 122 | } |