mirror of
https://github.com/go-gitea/gitea.git
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642 lines
18 KiB
Go
642 lines
18 KiB
Go
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// Copyright 2015 go-swagger maintainers
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package validate
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import (
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"fmt"
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"reflect"
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"github.com/go-openapi/errors"
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"github.com/go-openapi/spec"
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"github.com/go-openapi/strfmt"
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)
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// An EntityValidator is an interface for things that can validate entities
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type EntityValidator interface {
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Validate(interface{}) *Result
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}
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type valueValidator interface {
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SetPath(path string)
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Applies(interface{}, reflect.Kind) bool
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Validate(interface{}) *Result
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}
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type itemsValidator struct {
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items *spec.Items
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root interface{}
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path string
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in string
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validators []valueValidator
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KnownFormats strfmt.Registry
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}
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func newItemsValidator(path, in string, items *spec.Items, root interface{}, formats strfmt.Registry) *itemsValidator {
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iv := &itemsValidator{path: path, in: in, items: items, root: root, KnownFormats: formats}
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iv.validators = []valueValidator{
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&typeValidator{
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Type: spec.StringOrArray([]string{items.Type}),
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Nullable: items.Nullable,
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Format: items.Format,
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In: in,
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Path: path,
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},
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iv.stringValidator(),
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iv.formatValidator(),
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iv.numberValidator(),
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iv.sliceValidator(),
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iv.commonValidator(),
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}
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return iv
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}
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func (i *itemsValidator) Validate(index int, data interface{}) *Result {
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tpe := reflect.TypeOf(data)
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kind := tpe.Kind()
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mainResult := new(Result)
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path := fmt.Sprintf("%s.%d", i.path, index)
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for _, validator := range i.validators {
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validator.SetPath(path)
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if validator.Applies(i.root, kind) {
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result := validator.Validate(data)
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mainResult.Merge(result)
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mainResult.Inc()
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if result != nil && result.HasErrors() {
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return mainResult
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}
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}
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}
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return mainResult
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}
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func (i *itemsValidator) commonValidator() valueValidator {
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return &basicCommonValidator{
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In: i.in,
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Default: i.items.Default,
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Enum: i.items.Enum,
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}
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}
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func (i *itemsValidator) sliceValidator() valueValidator {
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return &basicSliceValidator{
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In: i.in,
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Default: i.items.Default,
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MaxItems: i.items.MaxItems,
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MinItems: i.items.MinItems,
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UniqueItems: i.items.UniqueItems,
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Source: i.root,
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Items: i.items.Items,
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KnownFormats: i.KnownFormats,
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}
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}
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func (i *itemsValidator) numberValidator() valueValidator {
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return &numberValidator{
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In: i.in,
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Default: i.items.Default,
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MultipleOf: i.items.MultipleOf,
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Maximum: i.items.Maximum,
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ExclusiveMaximum: i.items.ExclusiveMaximum,
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Minimum: i.items.Minimum,
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ExclusiveMinimum: i.items.ExclusiveMinimum,
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Type: i.items.Type,
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Format: i.items.Format,
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}
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}
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func (i *itemsValidator) stringValidator() valueValidator {
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return &stringValidator{
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In: i.in,
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Default: i.items.Default,
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MaxLength: i.items.MaxLength,
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MinLength: i.items.MinLength,
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Pattern: i.items.Pattern,
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AllowEmptyValue: false,
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}
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}
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func (i *itemsValidator) formatValidator() valueValidator {
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return &formatValidator{
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In: i.in,
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//Default: i.items.Default,
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Format: i.items.Format,
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KnownFormats: i.KnownFormats,
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}
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}
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type basicCommonValidator struct {
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Path string
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In string
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Default interface{}
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Enum []interface{}
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}
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func (b *basicCommonValidator) SetPath(path string) {
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b.Path = path
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}
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func (b *basicCommonValidator) Applies(source interface{}, kind reflect.Kind) bool {
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switch source.(type) {
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case *spec.Parameter, *spec.Schema, *spec.Header:
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return true
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}
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return false
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}
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func (b *basicCommonValidator) Validate(data interface{}) (res *Result) {
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if len(b.Enum) > 0 {
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for _, enumValue := range b.Enum {
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actualType := reflect.TypeOf(enumValue)
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if actualType != nil { // Safeguard
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expectedValue := reflect.ValueOf(data)
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if expectedValue.IsValid() && expectedValue.Type().ConvertibleTo(actualType) {
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if reflect.DeepEqual(expectedValue.Convert(actualType).Interface(), enumValue) {
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return nil
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}
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}
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}
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}
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return errorHelp.sErr(errors.EnumFail(b.Path, b.In, data, b.Enum))
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}
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return nil
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}
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// A HeaderValidator has very limited subset of validations to apply
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type HeaderValidator struct {
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name string
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header *spec.Header
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validators []valueValidator
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KnownFormats strfmt.Registry
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}
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// NewHeaderValidator creates a new header validator object
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func NewHeaderValidator(name string, header *spec.Header, formats strfmt.Registry) *HeaderValidator {
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p := &HeaderValidator{name: name, header: header, KnownFormats: formats}
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p.validators = []valueValidator{
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&typeValidator{
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Type: spec.StringOrArray([]string{header.Type}),
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Nullable: header.Nullable,
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Format: header.Format,
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In: "header",
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Path: name,
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},
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p.stringValidator(),
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p.formatValidator(),
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p.numberValidator(),
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p.sliceValidator(),
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p.commonValidator(),
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}
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return p
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}
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// Validate the value of the header against its schema
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func (p *HeaderValidator) Validate(data interface{}) *Result {
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result := new(Result)
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tpe := reflect.TypeOf(data)
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kind := tpe.Kind()
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for _, validator := range p.validators {
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if validator.Applies(p.header, kind) {
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if err := validator.Validate(data); err != nil {
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result.Merge(err)
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if err.HasErrors() {
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return result
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}
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}
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}
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}
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return nil
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}
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func (p *HeaderValidator) commonValidator() valueValidator {
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return &basicCommonValidator{
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Path: p.name,
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In: "response",
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Default: p.header.Default,
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Enum: p.header.Enum,
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}
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}
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func (p *HeaderValidator) sliceValidator() valueValidator {
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return &basicSliceValidator{
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Path: p.name,
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In: "response",
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Default: p.header.Default,
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MaxItems: p.header.MaxItems,
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MinItems: p.header.MinItems,
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UniqueItems: p.header.UniqueItems,
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Items: p.header.Items,
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Source: p.header,
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KnownFormats: p.KnownFormats,
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}
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}
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func (p *HeaderValidator) numberValidator() valueValidator {
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return &numberValidator{
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Path: p.name,
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In: "response",
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Default: p.header.Default,
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MultipleOf: p.header.MultipleOf,
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Maximum: p.header.Maximum,
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ExclusiveMaximum: p.header.ExclusiveMaximum,
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Minimum: p.header.Minimum,
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ExclusiveMinimum: p.header.ExclusiveMinimum,
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Type: p.header.Type,
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Format: p.header.Format,
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}
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}
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func (p *HeaderValidator) stringValidator() valueValidator {
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return &stringValidator{
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Path: p.name,
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In: "response",
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Default: p.header.Default,
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Required: true,
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MaxLength: p.header.MaxLength,
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MinLength: p.header.MinLength,
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Pattern: p.header.Pattern,
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AllowEmptyValue: false,
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}
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}
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func (p *HeaderValidator) formatValidator() valueValidator {
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return &formatValidator{
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Path: p.name,
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In: "response",
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//Default: p.header.Default,
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Format: p.header.Format,
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KnownFormats: p.KnownFormats,
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}
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}
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// A ParamValidator has very limited subset of validations to apply
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type ParamValidator struct {
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param *spec.Parameter
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validators []valueValidator
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KnownFormats strfmt.Registry
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}
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// NewParamValidator creates a new param validator object
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func NewParamValidator(param *spec.Parameter, formats strfmt.Registry) *ParamValidator {
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p := &ParamValidator{param: param, KnownFormats: formats}
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p.validators = []valueValidator{
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&typeValidator{
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Type: spec.StringOrArray([]string{param.Type}),
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Nullable: param.Nullable,
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Format: param.Format,
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In: param.In,
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Path: param.Name,
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},
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p.stringValidator(),
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p.formatValidator(),
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p.numberValidator(),
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p.sliceValidator(),
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p.commonValidator(),
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}
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return p
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}
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// Validate the data against the description of the parameter
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func (p *ParamValidator) Validate(data interface{}) *Result {
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result := new(Result)
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tpe := reflect.TypeOf(data)
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kind := tpe.Kind()
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// TODO: validate type
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for _, validator := range p.validators {
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if validator.Applies(p.param, kind) {
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if err := validator.Validate(data); err != nil {
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result.Merge(err)
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if err.HasErrors() {
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return result
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}
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}
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}
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}
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return nil
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}
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func (p *ParamValidator) commonValidator() valueValidator {
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return &basicCommonValidator{
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Path: p.param.Name,
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In: p.param.In,
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Default: p.param.Default,
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Enum: p.param.Enum,
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}
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}
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func (p *ParamValidator) sliceValidator() valueValidator {
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return &basicSliceValidator{
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Path: p.param.Name,
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In: p.param.In,
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Default: p.param.Default,
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MaxItems: p.param.MaxItems,
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MinItems: p.param.MinItems,
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UniqueItems: p.param.UniqueItems,
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Items: p.param.Items,
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Source: p.param,
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KnownFormats: p.KnownFormats,
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}
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}
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func (p *ParamValidator) numberValidator() valueValidator {
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return &numberValidator{
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Path: p.param.Name,
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In: p.param.In,
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Default: p.param.Default,
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MultipleOf: p.param.MultipleOf,
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Maximum: p.param.Maximum,
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ExclusiveMaximum: p.param.ExclusiveMaximum,
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Minimum: p.param.Minimum,
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ExclusiveMinimum: p.param.ExclusiveMinimum,
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Type: p.param.Type,
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Format: p.param.Format,
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}
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}
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func (p *ParamValidator) stringValidator() valueValidator {
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return &stringValidator{
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Path: p.param.Name,
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In: p.param.In,
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Default: p.param.Default,
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AllowEmptyValue: p.param.AllowEmptyValue,
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Required: p.param.Required,
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MaxLength: p.param.MaxLength,
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MinLength: p.param.MinLength,
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Pattern: p.param.Pattern,
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}
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}
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func (p *ParamValidator) formatValidator() valueValidator {
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return &formatValidator{
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Path: p.param.Name,
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In: p.param.In,
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//Default: p.param.Default,
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Format: p.param.Format,
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KnownFormats: p.KnownFormats,
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}
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}
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type basicSliceValidator struct {
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Path string
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In string
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Default interface{}
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MaxItems *int64
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MinItems *int64
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UniqueItems bool
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Items *spec.Items
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Source interface{}
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itemsValidator *itemsValidator
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KnownFormats strfmt.Registry
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}
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func (s *basicSliceValidator) SetPath(path string) {
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s.Path = path
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}
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func (s *basicSliceValidator) Applies(source interface{}, kind reflect.Kind) bool {
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switch source.(type) {
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case *spec.Parameter, *spec.Items, *spec.Header:
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return kind == reflect.Slice
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}
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return false
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}
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func (s *basicSliceValidator) Validate(data interface{}) *Result {
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val := reflect.ValueOf(data)
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size := int64(val.Len())
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if s.MinItems != nil {
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if err := MinItems(s.Path, s.In, size, *s.MinItems); err != nil {
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return errorHelp.sErr(err)
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}
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}
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if s.MaxItems != nil {
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if err := MaxItems(s.Path, s.In, size, *s.MaxItems); err != nil {
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return errorHelp.sErr(err)
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}
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}
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if s.UniqueItems {
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if err := UniqueItems(s.Path, s.In, data); err != nil {
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return errorHelp.sErr(err)
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}
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}
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if s.itemsValidator == nil && s.Items != nil {
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s.itemsValidator = newItemsValidator(s.Path, s.In, s.Items, s.Source, s.KnownFormats)
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}
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if s.itemsValidator != nil {
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for i := 0; i < int(size); i++ {
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ele := val.Index(i)
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if err := s.itemsValidator.Validate(i, ele.Interface()); err != nil && err.HasErrors() {
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return err
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}
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}
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}
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return nil
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}
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func (s *basicSliceValidator) hasDuplicates(value reflect.Value, size int) bool {
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dict := make(map[interface{}]struct{})
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for i := 0; i < size; i++ {
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ele := value.Index(i)
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if _, ok := dict[ele.Interface()]; ok {
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return true
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}
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dict[ele.Interface()] = struct{}{}
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}
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return false
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}
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type numberValidator struct {
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Path string
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In string
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Default interface{}
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MultipleOf *float64
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Maximum *float64
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ExclusiveMaximum bool
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Minimum *float64
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ExclusiveMinimum bool
|
||
|
// Allows for more accurate behavior regarding integers
|
||
|
Type string
|
||
|
Format string
|
||
|
}
|
||
|
|
||
|
func (n *numberValidator) SetPath(path string) {
|
||
|
n.Path = path
|
||
|
}
|
||
|
|
||
|
func (n *numberValidator) Applies(source interface{}, kind reflect.Kind) bool {
|
||
|
switch source.(type) {
|
||
|
case *spec.Parameter, *spec.Schema, *spec.Items, *spec.Header:
|
||
|
isInt := kind >= reflect.Int && kind <= reflect.Uint64
|
||
|
isFloat := kind == reflect.Float32 || kind == reflect.Float64
|
||
|
r := isInt || isFloat
|
||
|
debugLog("schema props validator for %q applies %t for %T (kind: %v) isInt=%t, isFloat=%t\n", n.Path, r, source, kind, isInt, isFloat)
|
||
|
return r
|
||
|
}
|
||
|
debugLog("schema props validator for %q applies %t for %T (kind: %v)\n", n.Path, false, source, kind)
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
// Validate provides a validator for generic JSON numbers,
|
||
|
//
|
||
|
// By default, numbers are internally represented as float64.
|
||
|
// Formats float, or float32 may alter this behavior by mapping to float32.
|
||
|
// A special validation process is followed for integers, with optional "format":
|
||
|
// this is an attempt to provide a validation with native types.
|
||
|
//
|
||
|
// NOTE: since the constraint specified (boundary, multipleOf) is unmarshalled
|
||
|
// as float64, loss of information remains possible (e.g. on very large integers).
|
||
|
//
|
||
|
// Since this value directly comes from the unmarshalling, it is not possible
|
||
|
// at this stage of processing to check further and guarantee the correctness of such values.
|
||
|
//
|
||
|
// Normally, the JSON Number.MAX_SAFE_INTEGER (resp. Number.MIN_SAFE_INTEGER)
|
||
|
// would check we do not get such a loss.
|
||
|
//
|
||
|
// If this is the case, replace AddErrors() by AddWarnings() and IsValid() by !HasWarnings().
|
||
|
//
|
||
|
// TODO: consider replacing boundary check errors by simple warnings.
|
||
|
//
|
||
|
// TODO: default boundaries with MAX_SAFE_INTEGER are not checked (specific to json.Number?)
|
||
|
func (n *numberValidator) Validate(val interface{}) *Result {
|
||
|
res := new(Result)
|
||
|
|
||
|
resMultiple := new(Result)
|
||
|
resMinimum := new(Result)
|
||
|
resMaximum := new(Result)
|
||
|
|
||
|
// Used only to attempt to validate constraint on value,
|
||
|
// even though value or constraint specified do not match type and format
|
||
|
data := valueHelp.asFloat64(val)
|
||
|
|
||
|
// Is the provided value within the range of the specified numeric type and format?
|
||
|
res.AddErrors(IsValueValidAgainstRange(val, n.Type, n.Format, "Checked", n.Path))
|
||
|
|
||
|
if n.MultipleOf != nil {
|
||
|
// Is the constraint specifier within the range of the specific numeric type and format?
|
||
|
resMultiple.AddErrors(IsValueValidAgainstRange(*n.MultipleOf, n.Type, n.Format, "MultipleOf", n.Path))
|
||
|
if resMultiple.IsValid() {
|
||
|
// Constraint validated with compatible types
|
||
|
if err := MultipleOfNativeType(n.Path, n.In, val, *n.MultipleOf); err != nil {
|
||
|
resMultiple.Merge(errorHelp.sErr(err))
|
||
|
}
|
||
|
} else {
|
||
|
// Constraint nevertheless validated, converted as general number
|
||
|
if err := MultipleOf(n.Path, n.In, data, *n.MultipleOf); err != nil {
|
||
|
resMultiple.Merge(errorHelp.sErr(err))
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if n.Maximum != nil {
|
||
|
// Is the constraint specifier within the range of the specific numeric type and format?
|
||
|
resMaximum.AddErrors(IsValueValidAgainstRange(*n.Maximum, n.Type, n.Format, "Maximum boundary", n.Path))
|
||
|
if resMaximum.IsValid() {
|
||
|
// Constraint validated with compatible types
|
||
|
if err := MaximumNativeType(n.Path, n.In, val, *n.Maximum, n.ExclusiveMaximum); err != nil {
|
||
|
resMaximum.Merge(errorHelp.sErr(err))
|
||
|
}
|
||
|
} else {
|
||
|
// Constraint nevertheless validated, converted as general number
|
||
|
if err := Maximum(n.Path, n.In, data, *n.Maximum, n.ExclusiveMaximum); err != nil {
|
||
|
resMaximum.Merge(errorHelp.sErr(err))
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if n.Minimum != nil {
|
||
|
// Is the constraint specifier within the range of the specific numeric type and format?
|
||
|
resMinimum.AddErrors(IsValueValidAgainstRange(*n.Minimum, n.Type, n.Format, "Minimum boundary", n.Path))
|
||
|
if resMinimum.IsValid() {
|
||
|
// Constraint validated with compatible types
|
||
|
if err := MinimumNativeType(n.Path, n.In, val, *n.Minimum, n.ExclusiveMinimum); err != nil {
|
||
|
resMinimum.Merge(errorHelp.sErr(err))
|
||
|
}
|
||
|
} else {
|
||
|
// Constraint nevertheless validated, converted as general number
|
||
|
if err := Minimum(n.Path, n.In, data, *n.Minimum, n.ExclusiveMinimum); err != nil {
|
||
|
resMinimum.Merge(errorHelp.sErr(err))
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
res.Merge(resMultiple, resMinimum, resMaximum)
|
||
|
res.Inc()
|
||
|
return res
|
||
|
}
|
||
|
|
||
|
type stringValidator struct {
|
||
|
Default interface{}
|
||
|
Required bool
|
||
|
AllowEmptyValue bool
|
||
|
MaxLength *int64
|
||
|
MinLength *int64
|
||
|
Pattern string
|
||
|
Path string
|
||
|
In string
|
||
|
}
|
||
|
|
||
|
func (s *stringValidator) SetPath(path string) {
|
||
|
s.Path = path
|
||
|
}
|
||
|
|
||
|
func (s *stringValidator) Applies(source interface{}, kind reflect.Kind) bool {
|
||
|
switch source.(type) {
|
||
|
case *spec.Parameter, *spec.Schema, *spec.Items, *spec.Header:
|
||
|
r := kind == reflect.String
|
||
|
debugLog("string validator for %q applies %t for %T (kind: %v)\n", s.Path, r, source, kind)
|
||
|
return r
|
||
|
}
|
||
|
debugLog("string validator for %q applies %t for %T (kind: %v)\n", s.Path, false, source, kind)
|
||
|
return false
|
||
|
}
|
||
|
|
||
|
func (s *stringValidator) Validate(val interface{}) *Result {
|
||
|
data, ok := val.(string)
|
||
|
if !ok {
|
||
|
return errorHelp.sErr(errors.InvalidType(s.Path, s.In, "string", val))
|
||
|
}
|
||
|
|
||
|
if s.Required && !s.AllowEmptyValue && (s.Default == nil || s.Default == "") {
|
||
|
if err := RequiredString(s.Path, s.In, data); err != nil {
|
||
|
return errorHelp.sErr(err)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if s.MaxLength != nil {
|
||
|
if err := MaxLength(s.Path, s.In, data, *s.MaxLength); err != nil {
|
||
|
return errorHelp.sErr(err)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if s.MinLength != nil {
|
||
|
if err := MinLength(s.Path, s.In, data, *s.MinLength); err != nil {
|
||
|
return errorHelp.sErr(err)
|
||
|
}
|
||
|
}
|
||
|
|
||
|
if s.Pattern != "" {
|
||
|
if err := Pattern(s.Path, s.In, data, s.Pattern); err != nil {
|
||
|
return errorHelp.sErr(err)
|
||
|
}
|
||
|
}
|
||
|
return nil
|
||
|
}
|