ceph-csi/vendor/k8s.io/kube-openapi/pkg/spec3/fuzz.go

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package spec3
import (
"math/rand"
"strings"
fuzz "github.com/google/gofuzz"
"k8s.io/kube-openapi/pkg/validation/spec"
)
// refChance is the chance that a particular component will use a $ref
// instead of fuzzed. Expressed as a fraction 1/n, currently there is
// a 1/3 chance that a ref will be used.
const refChance = 3
const alphaNumChars = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
func randAlphanumString() string {
arr := make([]string, rand.Intn(10)+5)
for i := 0; i < len(arr); i++ {
arr[i] = string(alphaNumChars[rand.Intn(len(alphaNumChars))])
}
return strings.Join(arr, "")
}
var OpenAPIV3FuzzFuncs []interface{} = []interface{}{
func(s *string, c fuzz.Continue) {
// All OpenAPI V3 map keys must follow the corresponding
// regex. Note that this restricts the range for all other
// string values as well.
str := randAlphanumString()
*s = str
},
func(o *OpenAPI, c fuzz.Continue) {
c.FuzzNoCustom(o)
o.Version = "3.0.0"
for i, val := range o.SecurityRequirement {
if val == nil {
o.SecurityRequirement[i] = make(map[string][]string)
}
for k, v := range val {
if v == nil {
val[k] = make([]string, 0)
}
}
}
},
func(r *interface{}, c fuzz.Continue) {
switch c.Intn(3) {
case 0:
*r = nil
case 1:
n := c.RandString() + "x"
*r = n
case 2:
n := c.Float64()
*r = n
}
},
func(v **spec.Info, c fuzz.Continue) {
// Info is never nil
*v = &spec.Info{}
c.FuzzNoCustom(*v)
(*v).Title = c.RandString() + "x"
},
func(v *Paths, c fuzz.Continue) {
c.Fuzz(&v.VendorExtensible)
num := c.Intn(5)
if num > 0 {
v.Paths = make(map[string]*Path)
}
for i := 0; i < num; i++ {
val := Path{}
c.Fuzz(&val)
v.Paths["/"+c.RandString()] = &val
}
},
func(v *SecurityScheme, c fuzz.Continue) {
if c.Intn(refChance) == 0 {
c.Fuzz(&v.Refable)
return
}
switch c.Intn(4) {
case 0:
v.Type = "apiKey"
v.Name = c.RandString() + "x"
switch c.Intn(3) {
case 0:
v.In = "query"
case 1:
v.In = "header"
case 2:
v.In = "cookie"
}
case 1:
v.Type = "http"
case 2:
v.Type = "oauth2"
v.Flows = make(map[string]*OAuthFlow)
flow := OAuthFlow{}
flow.AuthorizationUrl = c.RandString() + "x"
v.Flows["implicit"] = &flow
flow.Scopes = make(map[string]string)
flow.Scopes["foo"] = "bar"
case 3:
v.Type = "openIdConnect"
v.OpenIdConnectUrl = "https://" + c.RandString()
}
v.Scheme = "basic"
},
func(v *spec.Ref, c fuzz.Continue) {
switch c.Intn(7) {
case 0:
*v = spec.MustCreateRef("#/components/schemas/" + randAlphanumString())
case 1:
*v = spec.MustCreateRef("#/components/responses/" + randAlphanumString())
case 2:
*v = spec.MustCreateRef("#/components/headers/" + randAlphanumString())
case 3:
*v = spec.MustCreateRef("#/components/securitySchemes/" + randAlphanumString())
case 5:
*v = spec.MustCreateRef("#/components/parameters/" + randAlphanumString())
case 6:
*v = spec.MustCreateRef("#/components/requestBodies/" + randAlphanumString())
}
},
func(v *Parameter, c fuzz.Continue) {
if c.Intn(refChance) == 0 {
c.Fuzz(&v.Refable)
return
}
c.Fuzz(&v.ParameterProps)
c.Fuzz(&v.VendorExtensible)
switch c.Intn(3) {
case 0:
// Header param
v.In = "query"
case 1:
v.In = "header"
case 2:
v.In = "cookie"
}
},
func(v *RequestBody, c fuzz.Continue) {
if c.Intn(refChance) == 0 {
c.Fuzz(&v.Refable)
return
}
c.Fuzz(&v.RequestBodyProps)
c.Fuzz(&v.VendorExtensible)
},
func(v *Header, c fuzz.Continue) {
if c.Intn(refChance) == 0 {
c.Fuzz(&v.Refable)
return
}
c.Fuzz(&v.HeaderProps)
c.Fuzz(&v.VendorExtensible)
},
func(v *ResponsesProps, c fuzz.Continue) {
c.Fuzz(&v.Default)
n := c.Intn(5)
for i := 0; i < n; i++ {
r2 := Response{}
c.Fuzz(&r2)
// HTTP Status code in 100-599 Range
code := c.Intn(500) + 100
v.StatusCodeResponses = make(map[int]*Response)
v.StatusCodeResponses[code] = &r2
}
},
func(v *Response, c fuzz.Continue) {
if c.Intn(refChance) == 0 {
c.Fuzz(&v.Refable)
return
}
c.Fuzz(&v.ResponseProps)
c.Fuzz(&v.VendorExtensible)
},
func(v *Operation, c fuzz.Continue) {
c.FuzzNoCustom(v)
// Do not fuzz null values into the array.
for i, val := range v.SecurityRequirement {
if val == nil {
v.SecurityRequirement[i] = make(map[string][]string)
}
for k, v := range val {
if v == nil {
val[k] = make([]string, 0)
}
}
}
},
func(v *spec.Extensions, c fuzz.Continue) {
numChildren := c.Intn(5)
for i := 0; i < numChildren; i++ {
if *v == nil {
*v = spec.Extensions{}
}
(*v)["x-"+c.RandString()] = c.RandString()
}
},
func(v *spec.ExternalDocumentation, c fuzz.Continue) {
c.Fuzz(&v.Description)
v.URL = "https://" + randAlphanumString()
},
func(v *spec.SchemaURL, c fuzz.Continue) {
*v = spec.SchemaURL("https://" + randAlphanumString())
},
func(v *spec.SchemaOrBool, c fuzz.Continue) {
*v = spec.SchemaOrBool{}
if c.RandBool() {
v.Allows = c.RandBool()
} else {
v.Schema = &spec.Schema{}
v.Allows = true
c.Fuzz(&v.Schema)
}
},
func(v *spec.SchemaOrArray, c fuzz.Continue) {
*v = spec.SchemaOrArray{}
if c.RandBool() {
schema := spec.Schema{}
c.Fuzz(&schema)
v.Schema = &schema
} else {
v.Schemas = []spec.Schema{}
numChildren := c.Intn(5)
for i := 0; i < numChildren; i++ {
schema := spec.Schema{}
c.Fuzz(&schema)
v.Schemas = append(v.Schemas, schema)
}
}
},
func(v *spec.SchemaOrStringArray, c fuzz.Continue) {
if c.RandBool() {
*v = spec.SchemaOrStringArray{}
if c.RandBool() {
c.Fuzz(&v.Property)
} else {
c.Fuzz(&v.Schema)
}
}
},
func(v *spec.Schema, c fuzz.Continue) {
if c.Intn(refChance) == 0 {
c.Fuzz(&v.Ref)
return
}
if c.RandBool() {
// file schema
c.Fuzz(&v.Default)
c.Fuzz(&v.Description)
c.Fuzz(&v.Example)
c.Fuzz(&v.ExternalDocs)
c.Fuzz(&v.Format)
c.Fuzz(&v.ReadOnly)
c.Fuzz(&v.Required)
c.Fuzz(&v.Title)
v.Type = spec.StringOrArray{"file"}
} else {
// normal schema
c.Fuzz(&v.SchemaProps)
c.Fuzz(&v.SwaggerSchemaProps)
c.Fuzz(&v.VendorExtensible)
c.Fuzz(&v.ExtraProps)
}
},
}