SandpointsGitHook/vendor/github.com/getkin/kin-openapi/openapi3/schema.go

1797 lines
46 KiB
Go

package openapi3
import (
"bytes"
"context"
"encoding/json"
"errors"
"fmt"
"math"
"math/big"
"reflect"
"regexp"
"sort"
"strconv"
"unicode/utf16"
"github.com/go-openapi/jsonpointer"
"github.com/mohae/deepcopy"
"github.com/getkin/kin-openapi/jsoninfo"
)
const (
TypeArray = "array"
TypeBoolean = "boolean"
TypeInteger = "integer"
TypeNumber = "number"
TypeObject = "object"
TypeString = "string"
// constants for integer formats
formatMinInt32 = float64(math.MinInt32)
formatMaxInt32 = float64(math.MaxInt32)
formatMinInt64 = float64(math.MinInt64)
formatMaxInt64 = float64(math.MaxInt64)
)
var (
// SchemaErrorDetailsDisabled disables printing of details about schema errors.
SchemaErrorDetailsDisabled = false
errSchema = errors.New("input does not match the schema")
// ErrOneOfConflict is the SchemaError Origin when data matches more than one oneOf schema
ErrOneOfConflict = errors.New("input matches more than one oneOf schemas")
// ErrSchemaInputNaN may be returned when validating a number
ErrSchemaInputNaN = errors.New("floating point NaN is not allowed")
// ErrSchemaInputInf may be returned when validating a number
ErrSchemaInputInf = errors.New("floating point Inf is not allowed")
)
// Float64Ptr is a helper for defining OpenAPI schemas.
func Float64Ptr(value float64) *float64 {
return &value
}
// BoolPtr is a helper for defining OpenAPI schemas.
func BoolPtr(value bool) *bool {
return &value
}
// Int64Ptr is a helper for defining OpenAPI schemas.
func Int64Ptr(value int64) *int64 {
return &value
}
// Uint64Ptr is a helper for defining OpenAPI schemas.
func Uint64Ptr(value uint64) *uint64 {
return &value
}
type Schemas map[string]*SchemaRef
var _ jsonpointer.JSONPointable = (*Schemas)(nil)
// JSONLookup implements github.com/go-openapi/jsonpointer#JSONPointable
func (s Schemas) JSONLookup(token string) (interface{}, error) {
ref, ok := s[token]
if ref == nil || ok == false {
return nil, fmt.Errorf("object has no field %q", token)
}
if ref.Ref != "" {
return &Ref{Ref: ref.Ref}, nil
}
return ref.Value, nil
}
type SchemaRefs []*SchemaRef
var _ jsonpointer.JSONPointable = (*SchemaRefs)(nil)
// JSONLookup implements github.com/go-openapi/jsonpointer#JSONPointable
func (s SchemaRefs) JSONLookup(token string) (interface{}, error) {
i, err := strconv.ParseUint(token, 10, 64)
if err != nil {
return nil, err
}
if i >= uint64(len(s)) {
return nil, fmt.Errorf("index out of range: %d", i)
}
ref := s[i]
if ref == nil || ref.Ref != "" {
return &Ref{Ref: ref.Ref}, nil
}
return ref.Value, nil
}
// Schema is specified by OpenAPI/Swagger 3.0 standard.
// See https://github.com/OAI/OpenAPI-Specification/blob/main/versions/3.0.3.md#schemaObject
type Schema struct {
ExtensionProps `json:"-" yaml:"-"`
OneOf SchemaRefs `json:"oneOf,omitempty" yaml:"oneOf,omitempty"`
AnyOf SchemaRefs `json:"anyOf,omitempty" yaml:"anyOf,omitempty"`
AllOf SchemaRefs `json:"allOf,omitempty" yaml:"allOf,omitempty"`
Not *SchemaRef `json:"not,omitempty" yaml:"not,omitempty"`
Type string `json:"type,omitempty" yaml:"type,omitempty"`
Title string `json:"title,omitempty" yaml:"title,omitempty"`
Format string `json:"format,omitempty" yaml:"format,omitempty"`
Description string `json:"description,omitempty" yaml:"description,omitempty"`
Enum []interface{} `json:"enum,omitempty" yaml:"enum,omitempty"`
Default interface{} `json:"default,omitempty" yaml:"default,omitempty"`
Example interface{} `json:"example,omitempty" yaml:"example,omitempty"`
ExternalDocs *ExternalDocs `json:"externalDocs,omitempty" yaml:"externalDocs,omitempty"`
// Array-related, here for struct compactness
UniqueItems bool `json:"uniqueItems,omitempty" yaml:"uniqueItems,omitempty"`
// Number-related, here for struct compactness
ExclusiveMin bool `json:"exclusiveMinimum,omitempty" yaml:"exclusiveMinimum,omitempty"`
ExclusiveMax bool `json:"exclusiveMaximum,omitempty" yaml:"exclusiveMaximum,omitempty"`
// Properties
Nullable bool `json:"nullable,omitempty" yaml:"nullable,omitempty"`
ReadOnly bool `json:"readOnly,omitempty" yaml:"readOnly,omitempty"`
WriteOnly bool `json:"writeOnly,omitempty" yaml:"writeOnly,omitempty"`
AllowEmptyValue bool `json:"allowEmptyValue,omitempty" yaml:"allowEmptyValue,omitempty"`
Deprecated bool `json:"deprecated,omitempty" yaml:"deprecated,omitempty"`
XML *XML `json:"xml,omitempty" yaml:"xml,omitempty"`
// Number
Min *float64 `json:"minimum,omitempty" yaml:"minimum,omitempty"`
Max *float64 `json:"maximum,omitempty" yaml:"maximum,omitempty"`
MultipleOf *float64 `json:"multipleOf,omitempty" yaml:"multipleOf,omitempty"`
// String
MinLength uint64 `json:"minLength,omitempty" yaml:"minLength,omitempty"`
MaxLength *uint64 `json:"maxLength,omitempty" yaml:"maxLength,omitempty"`
Pattern string `json:"pattern,omitempty" yaml:"pattern,omitempty"`
compiledPattern *regexp.Regexp
// Array
MinItems uint64 `json:"minItems,omitempty" yaml:"minItems,omitempty"`
MaxItems *uint64 `json:"maxItems,omitempty" yaml:"maxItems,omitempty"`
Items *SchemaRef `json:"items,omitempty" yaml:"items,omitempty"`
// Object
Required []string `json:"required,omitempty" yaml:"required,omitempty"`
Properties Schemas `json:"properties,omitempty" yaml:"properties,omitempty"`
MinProps uint64 `json:"minProperties,omitempty" yaml:"minProperties,omitempty"`
MaxProps *uint64 `json:"maxProperties,omitempty" yaml:"maxProperties,omitempty"`
AdditionalPropertiesAllowed *bool `multijson:"additionalProperties,omitempty" json:"-" yaml:"-"` // In this order...
AdditionalProperties *SchemaRef `multijson:"additionalProperties,omitempty" json:"-" yaml:"-"` // ...for multijson
Discriminator *Discriminator `json:"discriminator,omitempty" yaml:"discriminator,omitempty"`
}
var _ jsonpointer.JSONPointable = (*Schema)(nil)
func NewSchema() *Schema {
return &Schema{}
}
// MarshalJSON returns the JSON encoding of Schema.
func (schema *Schema) MarshalJSON() ([]byte, error) {
return jsoninfo.MarshalStrictStruct(schema)
}
// UnmarshalJSON sets Schema to a copy of data.
func (schema *Schema) UnmarshalJSON(data []byte) error {
return jsoninfo.UnmarshalStrictStruct(data, schema)
}
// JSONLookup implements github.com/go-openapi/jsonpointer#JSONPointable
func (schema Schema) JSONLookup(token string) (interface{}, error) {
switch token {
case "additionalProperties":
if schema.AdditionalProperties != nil {
if schema.AdditionalProperties.Ref != "" {
return &Ref{Ref: schema.AdditionalProperties.Ref}, nil
}
return schema.AdditionalProperties.Value, nil
}
case "not":
if schema.Not != nil {
if schema.Not.Ref != "" {
return &Ref{Ref: schema.Not.Ref}, nil
}
return schema.Not.Value, nil
}
case "items":
if schema.Items != nil {
if schema.Items.Ref != "" {
return &Ref{Ref: schema.Items.Ref}, nil
}
return schema.Items.Value, nil
}
case "oneOf":
return schema.OneOf, nil
case "anyOf":
return schema.AnyOf, nil
case "allOf":
return schema.AllOf, nil
case "type":
return schema.Type, nil
case "title":
return schema.Title, nil
case "format":
return schema.Format, nil
case "description":
return schema.Description, nil
case "enum":
return schema.Enum, nil
case "default":
return schema.Default, nil
case "example":
return schema.Example, nil
case "externalDocs":
return schema.ExternalDocs, nil
case "additionalPropertiesAllowed":
return schema.AdditionalPropertiesAllowed, nil
case "uniqueItems":
return schema.UniqueItems, nil
case "exclusiveMin":
return schema.ExclusiveMin, nil
case "exclusiveMax":
return schema.ExclusiveMax, nil
case "nullable":
return schema.Nullable, nil
case "readOnly":
return schema.ReadOnly, nil
case "writeOnly":
return schema.WriteOnly, nil
case "allowEmptyValue":
return schema.AllowEmptyValue, nil
case "xml":
return schema.XML, nil
case "deprecated":
return schema.Deprecated, nil
case "min":
return schema.Min, nil
case "max":
return schema.Max, nil
case "multipleOf":
return schema.MultipleOf, nil
case "minLength":
return schema.MinLength, nil
case "maxLength":
return schema.MaxLength, nil
case "pattern":
return schema.Pattern, nil
case "minItems":
return schema.MinItems, nil
case "maxItems":
return schema.MaxItems, nil
case "required":
return schema.Required, nil
case "properties":
return schema.Properties, nil
case "minProps":
return schema.MinProps, nil
case "maxProps":
return schema.MaxProps, nil
case "discriminator":
return schema.Discriminator, nil
}
v, _, err := jsonpointer.GetForToken(schema.ExtensionProps, token)
return v, err
}
func (schema *Schema) NewRef() *SchemaRef {
return &SchemaRef{
Value: schema,
}
}
func NewOneOfSchema(schemas ...*Schema) *Schema {
refs := make([]*SchemaRef, 0, len(schemas))
for _, schema := range schemas {
refs = append(refs, &SchemaRef{Value: schema})
}
return &Schema{
OneOf: refs,
}
}
func NewAnyOfSchema(schemas ...*Schema) *Schema {
refs := make([]*SchemaRef, 0, len(schemas))
for _, schema := range schemas {
refs = append(refs, &SchemaRef{Value: schema})
}
return &Schema{
AnyOf: refs,
}
}
func NewAllOfSchema(schemas ...*Schema) *Schema {
refs := make([]*SchemaRef, 0, len(schemas))
for _, schema := range schemas {
refs = append(refs, &SchemaRef{Value: schema})
}
return &Schema{
AllOf: refs,
}
}
func NewBoolSchema() *Schema {
return &Schema{
Type: TypeBoolean,
}
}
func NewFloat64Schema() *Schema {
return &Schema{
Type: TypeNumber,
}
}
func NewIntegerSchema() *Schema {
return &Schema{
Type: TypeInteger,
}
}
func NewInt32Schema() *Schema {
return &Schema{
Type: TypeInteger,
Format: "int32",
}
}
func NewInt64Schema() *Schema {
return &Schema{
Type: TypeInteger,
Format: "int64",
}
}
func NewStringSchema() *Schema {
return &Schema{
Type: TypeString,
}
}
func NewDateTimeSchema() *Schema {
return &Schema{
Type: TypeString,
Format: "date-time",
}
}
func NewUUIDSchema() *Schema {
return &Schema{
Type: TypeString,
Format: "uuid",
}
}
func NewBytesSchema() *Schema {
return &Schema{
Type: TypeString,
Format: "byte",
}
}
func NewArraySchema() *Schema {
return &Schema{
Type: TypeArray,
}
}
func NewObjectSchema() *Schema {
return &Schema{
Type: TypeObject,
Properties: make(Schemas),
}
}
func (schema *Schema) WithNullable() *Schema {
schema.Nullable = true
return schema
}
func (schema *Schema) WithMin(value float64) *Schema {
schema.Min = &value
return schema
}
func (schema *Schema) WithMax(value float64) *Schema {
schema.Max = &value
return schema
}
func (schema *Schema) WithExclusiveMin(value bool) *Schema {
schema.ExclusiveMin = value
return schema
}
func (schema *Schema) WithExclusiveMax(value bool) *Schema {
schema.ExclusiveMax = value
return schema
}
func (schema *Schema) WithEnum(values ...interface{}) *Schema {
schema.Enum = values
return schema
}
func (schema *Schema) WithDefault(defaultValue interface{}) *Schema {
schema.Default = defaultValue
return schema
}
func (schema *Schema) WithFormat(value string) *Schema {
schema.Format = value
return schema
}
func (schema *Schema) WithLength(i int64) *Schema {
n := uint64(i)
schema.MinLength = n
schema.MaxLength = &n
return schema
}
func (schema *Schema) WithMinLength(i int64) *Schema {
n := uint64(i)
schema.MinLength = n
return schema
}
func (schema *Schema) WithMaxLength(i int64) *Schema {
n := uint64(i)
schema.MaxLength = &n
return schema
}
func (schema *Schema) WithLengthDecodedBase64(i int64) *Schema {
n := uint64(i)
v := (n*8 + 5) / 6
schema.MinLength = v
schema.MaxLength = &v
return schema
}
func (schema *Schema) WithMinLengthDecodedBase64(i int64) *Schema {
n := uint64(i)
schema.MinLength = (n*8 + 5) / 6
return schema
}
func (schema *Schema) WithMaxLengthDecodedBase64(i int64) *Schema {
n := uint64(i)
schema.MinLength = (n*8 + 5) / 6
return schema
}
func (schema *Schema) WithPattern(pattern string) *Schema {
schema.Pattern = pattern
schema.compiledPattern = nil
return schema
}
func (schema *Schema) WithItems(value *Schema) *Schema {
schema.Items = &SchemaRef{
Value: value,
}
return schema
}
func (schema *Schema) WithMinItems(i int64) *Schema {
n := uint64(i)
schema.MinItems = n
return schema
}
func (schema *Schema) WithMaxItems(i int64) *Schema {
n := uint64(i)
schema.MaxItems = &n
return schema
}
func (schema *Schema) WithUniqueItems(unique bool) *Schema {
schema.UniqueItems = unique
return schema
}
func (schema *Schema) WithProperty(name string, propertySchema *Schema) *Schema {
return schema.WithPropertyRef(name, &SchemaRef{
Value: propertySchema,
})
}
func (schema *Schema) WithPropertyRef(name string, ref *SchemaRef) *Schema {
properties := schema.Properties
if properties == nil {
properties = make(Schemas)
schema.Properties = properties
}
properties[name] = ref
return schema
}
func (schema *Schema) WithProperties(properties map[string]*Schema) *Schema {
result := make(Schemas, len(properties))
for k, v := range properties {
result[k] = &SchemaRef{
Value: v,
}
}
schema.Properties = result
return schema
}
func (schema *Schema) WithMinProperties(i int64) *Schema {
n := uint64(i)
schema.MinProps = n
return schema
}
func (schema *Schema) WithMaxProperties(i int64) *Schema {
n := uint64(i)
schema.MaxProps = &n
return schema
}
func (schema *Schema) WithAnyAdditionalProperties() *Schema {
schema.AdditionalProperties = nil
t := true
schema.AdditionalPropertiesAllowed = &t
return schema
}
func (schema *Schema) WithAdditionalProperties(v *Schema) *Schema {
if v == nil {
schema.AdditionalProperties = nil
} else {
schema.AdditionalProperties = &SchemaRef{
Value: v,
}
}
return schema
}
func (schema *Schema) IsEmpty() bool {
if schema.Type != "" || schema.Format != "" || len(schema.Enum) != 0 ||
schema.UniqueItems || schema.ExclusiveMin || schema.ExclusiveMax ||
schema.Nullable || schema.ReadOnly || schema.WriteOnly || schema.AllowEmptyValue ||
schema.Min != nil || schema.Max != nil || schema.MultipleOf != nil ||
schema.MinLength != 0 || schema.MaxLength != nil || schema.Pattern != "" ||
schema.MinItems != 0 || schema.MaxItems != nil ||
len(schema.Required) != 0 ||
schema.MinProps != 0 || schema.MaxProps != nil {
return false
}
if n := schema.Not; n != nil && !n.Value.IsEmpty() {
return false
}
if ap := schema.AdditionalProperties; ap != nil && !ap.Value.IsEmpty() {
return false
}
if apa := schema.AdditionalPropertiesAllowed; apa != nil && !*apa {
return false
}
if items := schema.Items; items != nil && !items.Value.IsEmpty() {
return false
}
for _, s := range schema.Properties {
if !s.Value.IsEmpty() {
return false
}
}
for _, s := range schema.OneOf {
if !s.Value.IsEmpty() {
return false
}
}
for _, s := range schema.AnyOf {
if !s.Value.IsEmpty() {
return false
}
}
for _, s := range schema.AllOf {
if !s.Value.IsEmpty() {
return false
}
}
return true
}
// Validate returns an error if Schema does not comply with the OpenAPI spec.
func (schema *Schema) Validate(ctx context.Context) error {
return schema.validate(ctx, []*Schema{})
}
func (schema *Schema) validate(ctx context.Context, stack []*Schema) (err error) {
validationOpts := getValidationOptions(ctx)
for _, existing := range stack {
if existing == schema {
return
}
}
stack = append(stack, schema)
if schema.ReadOnly && schema.WriteOnly {
return errors.New("a property MUST NOT be marked as both readOnly and writeOnly being true")
}
for _, item := range schema.OneOf {
v := item.Value
if v == nil {
return foundUnresolvedRef(item.Ref)
}
if err = v.validate(ctx, stack); err == nil {
return
}
}
for _, item := range schema.AnyOf {
v := item.Value
if v == nil {
return foundUnresolvedRef(item.Ref)
}
if err = v.validate(ctx, stack); err != nil {
return
}
}
for _, item := range schema.AllOf {
v := item.Value
if v == nil {
return foundUnresolvedRef(item.Ref)
}
if err = v.validate(ctx, stack); err != nil {
return
}
}
if ref := schema.Not; ref != nil {
v := ref.Value
if v == nil {
return foundUnresolvedRef(ref.Ref)
}
if err = v.validate(ctx, stack); err != nil {
return
}
}
schemaType := schema.Type
switch schemaType {
case "":
case TypeBoolean:
case TypeNumber:
if format := schema.Format; len(format) > 0 {
switch format {
case "float", "double":
default:
if validationOpts.SchemaFormatValidationEnabled {
return unsupportedFormat(format)
}
}
}
case TypeInteger:
if format := schema.Format; len(format) > 0 {
switch format {
case "int32", "int64":
default:
if validationOpts.SchemaFormatValidationEnabled {
return unsupportedFormat(format)
}
}
}
case TypeString:
if format := schema.Format; len(format) > 0 {
switch format {
// Supported by OpenAPIv3.0.3:
// https://spec.openapis.org/oas/v3.0.3
case "byte", "binary", "date", "date-time", "password":
// In JSON Draft-07 (not validated yet though):
// https://json-schema.org/draft-07/json-schema-release-notes.html#formats
case "iri", "iri-reference", "uri-template", "idn-email", "idn-hostname":
case "json-pointer", "relative-json-pointer", "regex", "time":
// In JSON Draft 2019-09 (not validated yet though):
// https://json-schema.org/draft/2019-09/release-notes.html#format-vocabulary
case "duration", "uuid":
// Defined in some other specification
case "email", "hostname", "ipv4", "ipv6", "uri", "uri-reference":
default:
// Try to check for custom defined formats
if _, ok := SchemaStringFormats[format]; !ok && validationOpts.SchemaFormatValidationEnabled {
return unsupportedFormat(format)
}
}
}
if schema.Pattern != "" && !validationOpts.SchemaPatternValidationDisabled {
if err = schema.compilePattern(); err != nil {
return err
}
}
case TypeArray:
if schema.Items == nil {
return errors.New("when schema type is 'array', schema 'items' must be non-null")
}
case TypeObject:
default:
return fmt.Errorf("unsupported 'type' value %q", schemaType)
}
if ref := schema.Items; ref != nil {
v := ref.Value
if v == nil {
return foundUnresolvedRef(ref.Ref)
}
if err = v.validate(ctx, stack); err != nil {
return
}
}
properties := make([]string, 0, len(schema.Properties))
for name := range schema.Properties {
properties = append(properties, name)
}
sort.Strings(properties)
for _, name := range properties {
ref := schema.Properties[name]
v := ref.Value
if v == nil {
return foundUnresolvedRef(ref.Ref)
}
if err = v.validate(ctx, stack); err != nil {
return
}
}
if ref := schema.AdditionalProperties; ref != nil {
v := ref.Value
if v == nil {
return foundUnresolvedRef(ref.Ref)
}
if err = v.validate(ctx, stack); err != nil {
return
}
}
if v := schema.ExternalDocs; v != nil {
if err = v.Validate(ctx); err != nil {
return fmt.Errorf("invalid external docs: %w", err)
}
}
if v := schema.Default; v != nil {
if err := schema.VisitJSON(v); err != nil {
return fmt.Errorf("invalid default: %w", err)
}
}
if x := schema.Example; x != nil && !validationOpts.ExamplesValidationDisabled {
if err := validateExampleValue(ctx, x, schema); err != nil {
return fmt.Errorf("invalid example: %w", err)
}
}
return
}
func (schema *Schema) IsMatching(value interface{}) bool {
settings := newSchemaValidationSettings(FailFast())
return schema.visitJSON(settings, value) == nil
}
func (schema *Schema) IsMatchingJSONBoolean(value bool) bool {
settings := newSchemaValidationSettings(FailFast())
return schema.visitJSON(settings, value) == nil
}
func (schema *Schema) IsMatchingJSONNumber(value float64) bool {
settings := newSchemaValidationSettings(FailFast())
return schema.visitJSON(settings, value) == nil
}
func (schema *Schema) IsMatchingJSONString(value string) bool {
settings := newSchemaValidationSettings(FailFast())
return schema.visitJSON(settings, value) == nil
}
func (schema *Schema) IsMatchingJSONArray(value []interface{}) bool {
settings := newSchemaValidationSettings(FailFast())
return schema.visitJSON(settings, value) == nil
}
func (schema *Schema) IsMatchingJSONObject(value map[string]interface{}) bool {
settings := newSchemaValidationSettings(FailFast())
return schema.visitJSON(settings, value) == nil
}
func (schema *Schema) VisitJSON(value interface{}, opts ...SchemaValidationOption) error {
settings := newSchemaValidationSettings(opts...)
return schema.visitJSON(settings, value)
}
func (schema *Schema) visitJSON(settings *schemaValidationSettings, value interface{}) (err error) {
switch value := value.(type) {
case nil:
return schema.visitJSONNull(settings)
case float64:
if math.IsNaN(value) {
return ErrSchemaInputNaN
}
if math.IsInf(value, 0) {
return ErrSchemaInputInf
}
}
if schema.IsEmpty() {
return
}
if err = schema.visitSetOperations(settings, value); err != nil {
return
}
switch value := value.(type) {
case bool:
return schema.visitJSONBoolean(settings, value)
case int:
return schema.visitJSONNumber(settings, float64(value))
case int32:
return schema.visitJSONNumber(settings, float64(value))
case int64:
return schema.visitJSONNumber(settings, float64(value))
case float64:
return schema.visitJSONNumber(settings, value)
case string:
return schema.visitJSONString(settings, value)
case []interface{}:
return schema.visitJSONArray(settings, value)
case map[string]interface{}:
return schema.visitJSONObject(settings, value)
case map[interface{}]interface{}: // for YAML cf. issue #444
values := make(map[string]interface{}, len(value))
for key, v := range value {
if k, ok := key.(string); ok {
values[k] = v
}
}
if len(value) == len(values) {
return schema.visitJSONObject(settings, values)
}
}
return &SchemaError{
Value: value,
Schema: schema,
SchemaField: "type",
Reason: fmt.Sprintf("unhandled value of type %T", value),
customizeMessageError: settings.customizeMessageError,
}
}
func (schema *Schema) visitSetOperations(settings *schemaValidationSettings, value interface{}) (err error) {
if enum := schema.Enum; len(enum) != 0 {
for _, v := range enum {
if reflect.DeepEqual(v, value) {
return
}
}
if settings.failfast {
return errSchema
}
return &SchemaError{
Value: value,
Schema: schema,
SchemaField: "enum",
Reason: fmt.Sprintf("value %q is not one of the allowed values", value),
customizeMessageError: settings.customizeMessageError,
}
}
if ref := schema.Not; ref != nil {
v := ref.Value
if v == nil {
return foundUnresolvedRef(ref.Ref)
}
if err := v.visitJSON(settings, value); err == nil {
if settings.failfast {
return errSchema
}
return &SchemaError{
Value: value,
Schema: schema,
SchemaField: "not",
customizeMessageError: settings.customizeMessageError,
}
}
}
if v := schema.OneOf; len(v) > 0 {
var discriminatorRef string
if schema.Discriminator != nil {
pn := schema.Discriminator.PropertyName
if valuemap, okcheck := value.(map[string]interface{}); okcheck {
discriminatorVal, okcheck := valuemap[pn]
if !okcheck {
return errors.New("input does not contain the discriminator property")
}
discriminatorValString, okcheck := discriminatorVal.(string)
if !okcheck {
return errors.New("descriminator value is not a string")
}
if discriminatorRef, okcheck = schema.Discriminator.Mapping[discriminatorValString]; len(schema.Discriminator.Mapping) > 0 && !okcheck {
return errors.New("input does not contain a valid discriminator value")
}
}
}
var (
ok = 0
validationErrors = multiErrorForOneOf{}
matchedOneOfIdx = 0
tempValue = value
)
// make a deep copy to protect origin value from being injected default value that defined in mismatched oneOf schema
if settings.asreq || settings.asrep {
tempValue = deepcopy.Copy(value)
}
for idx, item := range v {
v := item.Value
if v == nil {
return foundUnresolvedRef(item.Ref)
}
if discriminatorRef != "" && discriminatorRef != item.Ref {
continue
}
if err := v.visitJSON(settings, tempValue); err != nil {
validationErrors = append(validationErrors, err)
continue
}
matchedOneOfIdx = idx
ok++
}
if ok != 1 {
if len(validationErrors) > 1 {
return fmt.Errorf("doesn't match schema due to: %w", validationErrors)
}
if settings.failfast {
return errSchema
}
e := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "oneOf",
customizeMessageError: settings.customizeMessageError,
}
if ok > 1 {
e.Origin = ErrOneOfConflict
} else if len(validationErrors) == 1 {
e.Origin = validationErrors[0]
}
return e
}
if settings.asreq || settings.asrep {
_ = v[matchedOneOfIdx].Value.visitJSON(settings, value)
}
}
if v := schema.AnyOf; len(v) > 0 {
var (
ok = false
matchedAnyOfIdx = 0
tempValue = value
)
// make a deep copy to protect origin value from being injected default value that defined in mismatched anyOf schema
if settings.asreq || settings.asrep {
tempValue = deepcopy.Copy(value)
}
for idx, item := range v {
v := item.Value
if v == nil {
return foundUnresolvedRef(item.Ref)
}
if err := v.visitJSON(settings, tempValue); err == nil {
ok = true
matchedAnyOfIdx = idx
break
}
}
if !ok {
if settings.failfast {
return errSchema
}
return &SchemaError{
Value: value,
Schema: schema,
SchemaField: "anyOf",
customizeMessageError: settings.customizeMessageError,
}
}
_ = v[matchedAnyOfIdx].Value.visitJSON(settings, value)
}
for _, item := range schema.AllOf {
v := item.Value
if v == nil {
return foundUnresolvedRef(item.Ref)
}
if err := v.visitJSON(settings, value); err != nil {
if settings.failfast {
return errSchema
}
return &SchemaError{
Value: value,
Schema: schema,
SchemaField: "allOf",
Origin: err,
customizeMessageError: settings.customizeMessageError,
}
}
}
return
}
func (schema *Schema) visitJSONNull(settings *schemaValidationSettings) (err error) {
if schema.Nullable {
return
}
if settings.failfast {
return errSchema
}
return &SchemaError{
Value: nil,
Schema: schema,
SchemaField: "nullable",
Reason: "Value is not nullable",
customizeMessageError: settings.customizeMessageError,
}
}
func (schema *Schema) VisitJSONBoolean(value bool) error {
settings := newSchemaValidationSettings()
return schema.visitJSONBoolean(settings, value)
}
func (schema *Schema) visitJSONBoolean(settings *schemaValidationSettings, value bool) (err error) {
if schemaType := schema.Type; schemaType != "" && schemaType != TypeBoolean {
return schema.expectedType(settings, TypeBoolean)
}
return
}
func (schema *Schema) VisitJSONNumber(value float64) error {
settings := newSchemaValidationSettings()
return schema.visitJSONNumber(settings, value)
}
func (schema *Schema) visitJSONNumber(settings *schemaValidationSettings, value float64) error {
var me MultiError
schemaType := schema.Type
if schemaType == TypeInteger {
if bigFloat := big.NewFloat(value); !bigFloat.IsInt() {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "type",
Reason: fmt.Sprintf("value \"%g\" must be an integer", value),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
} else if schemaType != "" && schemaType != TypeNumber {
return schema.expectedType(settings, "number, integer")
}
// formats
if schemaType == TypeInteger && schema.Format != "" {
formatMin := float64(0)
formatMax := float64(0)
switch schema.Format {
case "int32":
formatMin = formatMinInt32
formatMax = formatMaxInt32
case "int64":
formatMin = formatMinInt64
formatMax = formatMaxInt64
default:
if settings.formatValidationEnabled {
return unsupportedFormat(schema.Format)
}
}
if formatMin != 0 && formatMax != 0 && !(formatMin <= value && value <= formatMax) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "format",
Reason: fmt.Sprintf("number must be an %s", schema.Format),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
}
// "exclusiveMinimum"
if v := schema.ExclusiveMin; v && !(*schema.Min < value) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "exclusiveMinimum",
Reason: fmt.Sprintf("number must be more than %g", *schema.Min),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "exclusiveMaximum"
if v := schema.ExclusiveMax; v && !(*schema.Max > value) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "exclusiveMaximum",
Reason: fmt.Sprintf("number must be less than %g", *schema.Max),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "minimum"
if v := schema.Min; v != nil && !(*v <= value) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "minimum",
Reason: fmt.Sprintf("number must be at least %g", *v),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "maximum"
if v := schema.Max; v != nil && !(*v >= value) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "maximum",
Reason: fmt.Sprintf("number must be at most %g", *v),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "multipleOf"
if v := schema.MultipleOf; v != nil {
// "A numeric instance is valid only if division by this keyword's
// value results in an integer."
if bigFloat := big.NewFloat(value / *v); !bigFloat.IsInt() {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "multipleOf",
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
}
if len(me) > 0 {
return me
}
return nil
}
func (schema *Schema) VisitJSONString(value string) error {
settings := newSchemaValidationSettings()
return schema.visitJSONString(settings, value)
}
func (schema *Schema) visitJSONString(settings *schemaValidationSettings, value string) error {
if schemaType := schema.Type; schemaType != "" && schemaType != TypeString {
return schema.expectedType(settings, TypeString)
}
var me MultiError
// "minLength" and "maxLength"
minLength := schema.MinLength
maxLength := schema.MaxLength
if minLength != 0 || maxLength != nil {
// JSON schema string lengths are UTF-16, not UTF-8!
length := int64(0)
for _, r := range value {
if utf16.IsSurrogate(r) {
length += 2
} else {
length++
}
}
if minLength != 0 && length < int64(minLength) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "minLength",
Reason: fmt.Sprintf("minimum string length is %d", minLength),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
if maxLength != nil && length > int64(*maxLength) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "maxLength",
Reason: fmt.Sprintf("maximum string length is %d", *maxLength),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
}
// "pattern"
if schema.Pattern != "" && schema.compiledPattern == nil && !settings.patternValidationDisabled {
var err error
if err = schema.compilePattern(); err != nil {
if !settings.multiError {
return err
}
me = append(me, err)
}
}
if cp := schema.compiledPattern; cp != nil && !cp.MatchString(value) {
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "pattern",
Reason: fmt.Sprintf(`string %q doesn't match the regular expression "%s"`, value, schema.Pattern),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "format"
var formatStrErr string
var formatErr error
if format := schema.Format; format != "" {
if f, ok := SchemaStringFormats[format]; ok {
switch {
case f.regexp != nil && f.callback == nil:
if cp := f.regexp; !cp.MatchString(value) {
formatStrErr = fmt.Sprintf(`string doesn't match the format %q (regular expression "%s")`, format, cp.String())
}
case f.regexp == nil && f.callback != nil:
if err := f.callback(value); err != nil {
formatErr = err
}
default:
formatStrErr = fmt.Sprintf("corrupted entry %q in SchemaStringFormats", format)
}
}
}
if formatStrErr != "" || formatErr != nil {
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "format",
Reason: formatStrErr,
Origin: formatErr,
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
if len(me) > 0 {
return me
}
return nil
}
func (schema *Schema) VisitJSONArray(value []interface{}) error {
settings := newSchemaValidationSettings()
return schema.visitJSONArray(settings, value)
}
func (schema *Schema) visitJSONArray(settings *schemaValidationSettings, value []interface{}) error {
if schemaType := schema.Type; schemaType != "" && schemaType != TypeArray {
return schema.expectedType(settings, TypeArray)
}
var me MultiError
lenValue := int64(len(value))
// "minItems"
if v := schema.MinItems; v != 0 && lenValue < int64(v) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "minItems",
Reason: fmt.Sprintf("minimum number of items is %d", v),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "maxItems"
if v := schema.MaxItems; v != nil && lenValue > int64(*v) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "maxItems",
Reason: fmt.Sprintf("maximum number of items is %d", *v),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "uniqueItems"
if sliceUniqueItemsChecker == nil {
sliceUniqueItemsChecker = isSliceOfUniqueItems
}
if v := schema.UniqueItems; v && !sliceUniqueItemsChecker(value) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "uniqueItems",
Reason: "duplicate items found",
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "items"
if itemSchemaRef := schema.Items; itemSchemaRef != nil {
itemSchema := itemSchemaRef.Value
if itemSchema == nil {
return foundUnresolvedRef(itemSchemaRef.Ref)
}
for i, item := range value {
if err := itemSchema.visitJSON(settings, item); err != nil {
err = markSchemaErrorIndex(err, i)
if !settings.multiError {
return err
}
if itemMe, ok := err.(MultiError); ok {
me = append(me, itemMe...)
} else {
me = append(me, err)
}
}
}
}
if len(me) > 0 {
return me
}
return nil
}
func (schema *Schema) VisitJSONObject(value map[string]interface{}) error {
settings := newSchemaValidationSettings()
return schema.visitJSONObject(settings, value)
}
func (schema *Schema) visitJSONObject(settings *schemaValidationSettings, value map[string]interface{}) error {
if schemaType := schema.Type; schemaType != "" && schemaType != TypeObject {
return schema.expectedType(settings, TypeObject)
}
var me MultiError
if settings.asreq || settings.asrep {
properties := make([]string, 0, len(schema.Properties))
for propName := range schema.Properties {
properties = append(properties, propName)
}
sort.Strings(properties)
for _, propName := range properties {
propSchema := schema.Properties[propName]
reqRO := settings.asreq && propSchema.Value.ReadOnly
repWO := settings.asrep && propSchema.Value.WriteOnly
if value[propName] == nil {
if dlft := propSchema.Value.Default; dlft != nil && !reqRO && !repWO {
value[propName] = dlft
if f := settings.defaultsSet; f != nil {
settings.onceSettingDefaults.Do(f)
}
}
}
if value[propName] != nil {
if reqRO {
me = append(me, fmt.Errorf("readOnly property %q in request", propName))
} else if repWO {
me = append(me, fmt.Errorf("writeOnly property %q in response", propName))
}
}
}
}
// "properties"
properties := schema.Properties
lenValue := int64(len(value))
// "minProperties"
if v := schema.MinProps; v != 0 && lenValue < int64(v) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "minProperties",
Reason: fmt.Sprintf("there must be at least %d properties", v),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "maxProperties"
if v := schema.MaxProps; v != nil && lenValue > int64(*v) {
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "maxProperties",
Reason: fmt.Sprintf("there must be at most %d properties", *v),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "additionalProperties"
var additionalProperties *Schema
if ref := schema.AdditionalProperties; ref != nil {
additionalProperties = ref.Value
}
keys := make([]string, 0, len(value))
for k := range value {
keys = append(keys, k)
}
sort.Strings(keys)
for _, k := range keys {
v := value[k]
if properties != nil {
propertyRef := properties[k]
if propertyRef != nil {
p := propertyRef.Value
if p == nil {
return foundUnresolvedRef(propertyRef.Ref)
}
if err := p.visitJSON(settings, v); err != nil {
if settings.failfast {
return errSchema
}
err = markSchemaErrorKey(err, k)
if !settings.multiError {
return err
}
if v, ok := err.(MultiError); ok {
me = append(me, v...)
continue
}
me = append(me, err)
}
continue
}
}
allowed := schema.AdditionalPropertiesAllowed
if additionalProperties != nil || allowed == nil || *allowed {
if additionalProperties != nil {
if err := additionalProperties.visitJSON(settings, v); err != nil {
if settings.failfast {
return errSchema
}
err = markSchemaErrorKey(err, k)
if !settings.multiError {
return err
}
if v, ok := err.(MultiError); ok {
me = append(me, v...)
continue
}
me = append(me, err)
}
}
continue
}
if settings.failfast {
return errSchema
}
err := &SchemaError{
Value: value,
Schema: schema,
SchemaField: "properties",
Reason: fmt.Sprintf("property %q is unsupported", k),
customizeMessageError: settings.customizeMessageError,
}
if !settings.multiError {
return err
}
me = append(me, err)
}
// "required"
for _, k := range schema.Required {
if _, ok := value[k]; !ok {
if s := schema.Properties[k]; s != nil && s.Value.ReadOnly && settings.asreq {
continue
}
if s := schema.Properties[k]; s != nil && s.Value.WriteOnly && settings.asrep {
continue
}
if settings.failfast {
return errSchema
}
err := markSchemaErrorKey(&SchemaError{
Value: value,
Schema: schema,
SchemaField: "required",
Reason: fmt.Sprintf("property %q is missing", k),
customizeMessageError: settings.customizeMessageError,
}, k)
if !settings.multiError {
return err
}
me = append(me, err)
}
}
if len(me) > 0 {
return me
}
return nil
}
func (schema *Schema) expectedType(settings *schemaValidationSettings, typ string) error {
if settings.failfast {
return errSchema
}
return &SchemaError{
Value: typ,
Schema: schema,
SchemaField: "type",
Reason: fmt.Sprintf("field must be set to %s or not be present", schema.Type),
customizeMessageError: settings.customizeMessageError,
}
}
func (schema *Schema) compilePattern() (err error) {
if schema.compiledPattern, err = regexp.Compile(schema.Pattern); err != nil {
return &SchemaError{
Schema: schema,
SchemaField: "pattern",
Reason: fmt.Sprintf("cannot compile pattern %q: %v", schema.Pattern, err),
}
}
return nil
}
type SchemaError struct {
Value interface{}
reversePath []string
Schema *Schema
SchemaField string
Reason string
Origin error
customizeMessageError func(err *SchemaError) string
}
var _ interface{ Unwrap() error } = SchemaError{}
func markSchemaErrorKey(err error, key string) error {
var me multiErrorForOneOf
if errors.As(err, &me) {
err = me.Unwrap()
}
if v, ok := err.(*SchemaError); ok {
v.reversePath = append(v.reversePath, key)
return v
}
if v, ok := err.(MultiError); ok {
for _, e := range v {
_ = markSchemaErrorKey(e, key)
}
return v
}
return err
}
func markSchemaErrorIndex(err error, index int) error {
return markSchemaErrorKey(err, strconv.FormatInt(int64(index), 10))
}
func (err *SchemaError) JSONPointer() []string {
reversePath := err.reversePath
path := append([]string(nil), reversePath...)
for left, right := 0, len(path)-1; left < right; left, right = left+1, right-1 {
path[left], path[right] = path[right], path[left]
}
return path
}
func (err *SchemaError) Error() string {
if err.customizeMessageError != nil {
if msg := err.customizeMessageError(err); msg != "" {
return msg
}
}
buf := bytes.NewBuffer(make([]byte, 0, 256))
if len(err.reversePath) > 0 {
buf.WriteString(`Error at "`)
reversePath := err.reversePath
for i := len(reversePath) - 1; i >= 0; i-- {
buf.WriteByte('/')
buf.WriteString(reversePath[i])
}
buf.WriteString(`": `)
}
if err.Origin != nil {
buf.WriteString(err.Origin.Error())
return buf.String()
}
reason := err.Reason
if reason == "" {
buf.WriteString(`Doesn't match schema "`)
buf.WriteString(err.SchemaField)
buf.WriteString(`"`)
} else {
buf.WriteString(reason)
}
if !SchemaErrorDetailsDisabled {
buf.WriteString("\nSchema:\n ")
encoder := json.NewEncoder(buf)
encoder.SetIndent(" ", " ")
if err := encoder.Encode(err.Schema); err != nil {
panic(err)
}
buf.WriteString("\nValue:\n ")
if err := encoder.Encode(err.Value); err != nil {
panic(err)
}
}
return buf.String()
}
func (err SchemaError) Unwrap() error {
return err.Origin
}
func isSliceOfUniqueItems(xs []interface{}) bool {
s := len(xs)
m := make(map[string]struct{}, s)
for _, x := range xs {
// The input slice is coverted from a JSON string, there shall
// have no error when covert it back.
key, _ := json.Marshal(&x)
m[string(key)] = struct{}{}
}
return s == len(m)
}
// SliceUniqueItemsChecker is an function used to check if an given slice
// have unique items.
type SliceUniqueItemsChecker func(items []interface{}) bool
// By default using predefined func isSliceOfUniqueItems which make use of
// json.Marshal to generate a key for map used to check if a given slice
// have unique items.
var sliceUniqueItemsChecker SliceUniqueItemsChecker = isSliceOfUniqueItems
// RegisterArrayUniqueItemsChecker is used to register a customized function
// used to check if JSON array have unique items.
func RegisterArrayUniqueItemsChecker(fn SliceUniqueItemsChecker) {
sliceUniqueItemsChecker = fn
}
func unsupportedFormat(format string) error {
return fmt.Errorf("unsupported 'format' value %q", format)
}