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mutator.go
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mutator.go
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package tbft
import (
"errors"
"fmt"
"math"
"math/rand"
"reflect"
"strings"
"time"
"chainmaker.org/chainmaker/pb-go/v2/common"
tbftpb "chainmaker.org/chainmaker/pb-go/v2/consensus/tbft"
)
type Numeric interface {
int | int8 | int16 | int32 | int64 | uint | uint8 | uint16 | uint32 | uint64 | float32 | float64
}
var MAX_MUTATE_ITER = 5
const charset = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
var seededRand *rand.Rand = rand.New(rand.NewSource(int64(time.Now().Nanosecond())))
const nilChance = 10
func Generate_random_bool() bool {
return seededRand.Intn(2) != 0
}
func generate_edge_value_with_type(number interface{}) (interface{}, interface{}) {
switch number.(type) {
case uint:
return uint(0), uint(math.MaxUint32)
case uint8:
return uint8(0), uint8(math.MaxUint8)
case uint16:
return uint16(0), uint16(math.MaxUint16)
case uint32:
return uint32(0), uint32(math.MaxUint32)
case uint64:
return uint64(0), uint64(math.MaxUint64)
case int:
return int(math.MinInt32), int(math.MaxInt32)
case int8:
return int8(math.MinInt8), int8(math.MaxInt8)
case int16:
return int16(math.MinInt16), int16(math.MaxInt16)
case int32:
return int32(math.MinInt32), int32(math.MaxInt32)
case int64:
return int64(math.MinInt64), int64(math.MaxInt64)
case float32:
return -math.MaxFloat32, math.MaxFloat32
case float64:
return float64(-math.MaxFloat64), float64(math.MaxFloat64)
default:
fmt.Printf("%s is an unknown number type!\n", reflect.TypeOf(number).String())
return false, false
}
}
func generate_random_number_with_range(lower interface{}, upper interface{}) interface{} {
switch lower.(type) {
case uint:
return uint(generate_random_unsigned_integer_number_with_range(uint64(lower.(uint)), uint64(upper.(uint))))
case uint8:
return uint8(generate_random_unsigned_integer_number_with_range(uint64(lower.(uint8)), uint64(upper.(uint8))))
case uint16:
return uint16(generate_random_unsigned_integer_number_with_range(uint64(lower.(uint16)), uint64(upper.(uint16))))
case uint32:
return uint32(generate_random_unsigned_integer_number_with_range(uint64(lower.(uint32)), uint64(upper.(uint32))))
case uint64:
return uint64(generate_random_unsigned_integer_number_with_range(uint64(lower.(uint64)), uint64(upper.(uint64))))
case int:
return int(generate_random_signed_integer_number_with_range(int(lower.(int)), int(upper.(int))))
case int8:
return int8(generate_random_signed_integer_number_with_range(int(lower.(int8)), int(upper.(int8))))
case int16:
return int16(generate_random_signed_integer_number_with_range(int(lower.(int16)), int(upper.(int16))))
case int32:
return int32(generate_random_signed_integer_number_with_range(int(lower.(int32)), int(upper.(int32))))
case int64:
return int64(generate_random_signed_long_integer_number_with_range(int64(lower.(int64)), int64(upper.(int64))))
case float32:
return generate_random_float32_number_with_range(lower.(float32), upper.(float32))
case float64:
return generate_random_float64_number_with_range(lower.(float64), upper.(float64))
default:
fmt.Printf("%s is an unknown number type!\n", reflect.TypeOf(lower).String())
return false
}
}
func generate_random_float32_number_with_range(min, max float32) float32 {
return seededRand.Float32()*(max-min) + min
}
func generate_random_float64_number_with_range(min, max float64) float64 {
return seededRand.Float64()*(max-min) + min
}
func generate_random_signed_integer_number_with_range(min, max int) int {
return int(seededRand.Int63n(int64(max)-int64(min)) + int64(min))
}
func generate_random_signed_long_integer_number_with_range(min, max int64) int64 {
n := uint64(max - min)
return int64(generate_random_unsigned_integer_number_with_range(0, n)) + min
}
func generate_random_unsigned_integer_number_with_range(min, max uint64) uint64 {
n := max - min
x := seededRand.Uint64()
if n < math.MaxInt64 {
return uint64(rand.Int63n(int64(max-min))) + min
}
for x > n {
x = seededRand.Uint64()
}
return x + min
}
func generate_random_number_with_type(number interface{}) interface{} {
minNumber, maxNumber := generate_edge_value_with_type(number)
return generate_random_number_with_range(minNumber, maxNumber)
}
func edge_value_mutate_with_type(number interface{}) interface{} {
minNumber, maxNumber := generate_edge_value_with_type(number)
randChoice := Generate_random_bool()
switch randChoice {
case false:
return minNumber
case true:
return maxNumber
default:
return 0
}
}
func generate_random_enum(enumValueMap map[string]int32) int32 {
var enumRandomPool []int32
for _, value := range enumValueMap {
enumRandomPool = append(enumRandomPool, value)
}
return enumRandomPool[seededRand.Intn(len(enumRandomPool))]
}
// func strictly_increasing_generate_random_number_with_type(number interface{}) interface{} {
// _, maxNumber := generate_edge_value_with_type(number)
// return generate_random_number_with_range(number, maxNumber)
// }
// func strictly_decreasing_generate_random_number_with_type(number interface{}) interface{} {
// minNumber, _ := generate_edge_value_with_type(number)
// return generate_random_number_with_range(minNumber, number)
// }
func small_change_fundation_number[T Numeric](number T) T {
changeRange := seededRand.Intn(5) + 1
randChoice := Generate_random_bool()
minNumber, maxNumber := generate_edge_value_with_type(number)
if randChoice {
if number > maxNumber.(T)-T(changeRange) {
return maxNumber.(T)
}
return number + T(changeRange)
}
if number < minNumber.(T)+T(changeRange) {
return minNumber.(T)
}
return number - T(changeRange)
}
func mutate_foundation_number_type[T Numeric](number T) T {
randChoice := seededRand.Intn(100)
if randChoice < 10 {
return edge_value_mutate_with_type(number).(T)
} else if randChoice < 90 {
return T(small_change_fundation_number(number))
} else {
return generate_random_number_with_type(number).(T)
}
}
func mutate_other_number_type(number interface{}) interface{} {
switch number.(type) {
case tbftpb.TBFTMsgType:
return tbftpb.TBFTMsgType(generate_random_enum(tbftpb.TBFTMsgType_value))
case tbftpb.VoteType:
return tbftpb.VoteType(generate_random_enum(tbftpb.VoteType_value))
case common.TxType:
return common.TxType(generate_random_enum(common.TxType_value))
default:
// fmt.Printf("unknow number data type %s\n", reflect.TypeOf(number).String())
return number
}
}
func handle_number_mutate(number interface{}) (interface{}, error) {
if seededRand.Intn(100) < 80 {
return number, nil
}
reflect.TypeOf(number)
switch number := number.(type) {
case uint:
return mutate_foundation_number_type(number), nil
case uint8:
return mutate_foundation_number_type(number), nil
case uint16:
return mutate_foundation_number_type(number), nil
case uint32:
return mutate_foundation_number_type(number), nil
case uint64:
return mutate_foundation_number_type(number), nil
case int:
return mutate_foundation_number_type(number), nil
case int8:
return mutate_foundation_number_type(number), nil
case int16:
return mutate_foundation_number_type(number), nil
case int32:
return mutate_foundation_number_type(number), nil
case int64:
return mutate_foundation_number_type(number), nil
case float32:
return mutate_foundation_number_type(number), nil
case float64:
return mutate_foundation_number_type(number), nil
default:
return mutate_other_number_type(number), nil
}
}
func handle_bytes_mutate(bytes []byte, name string) []byte {
if seededRand.Intn(100) < 80 {
return bytes
}
if seededRand.Intn(100) < nilChance {
return nil
}
switch name {
case "MemberInfo":
return bytes
default:
return random_mutate_bytes(bytes)
}
}
/* random mutation for bytes */
func random_mutate_bytes(bytes []byte) []byte {
length := len(bytes)
if length <= 0 {
return bytes
}
mutate_times := generate_random_signed_integer_number_with_range(0, MAX_MUTATE_ITER+1)
res := bytes
for i := 0; i < mutate_times; i++ {
pos := seededRand.Intn(length)
res[pos] = byte(generate_random_unsigned_integer_number_with_range(0, math.MaxUint8))
}
return res
}
func handle_string_mutate(str string, name string) string {
if seededRand.Intn(100) < 80 {
return str
}
switch name {
case "Voter":
return str
default:
return random_mutate_string(str)
}
}
/* random mutation for string */
func random_mutate_string(str string) string {
length := len(str)
if length <= 0 {
return str
}
mutate_times := generate_random_signed_integer_number_with_range(0, MAX_MUTATE_ITER+1)
res := str
for i := 0; i < mutate_times; i++ {
pos := seededRand.Intn(length)
res = res[:pos] + string(charset[seededRand.Intn(len(charset))]) + res[pos+1:]
}
return res
}
func handleSlice(v reflect.Value, name string) ([]interface{}, error) {
if v.Type().Kind() != reflect.Slice {
return nil, errors.New("incorrect config type: config type should be slice")
}
if seededRand.Intn(100) < nilChance {
return nil, nil
}
if v.Len() <= 0 || !v.IsValid() || v.IsNil() {
return nil, nil
}
res := make([]interface{}, v.Len())
switch reflect.ValueOf(v.Index(0).Interface()).Kind() {
case reflect.Uint8:
value := make([]byte, v.Len())
for i := 0; i < v.Len(); i++ {
value[i] = uint8(v.Index(i).Interface().(uint8))
}
value = handle_bytes_mutate(value, name)
for i := 0; i < len(value); i++ {
res[i] = value[i]
}
case reflect.Map:
for i := 0; i < v.Len(); i++ {
value, err := MutateMap(v.Index(i).Interface().(map[string]interface{}))
if err != nil {
return nil, err
}
res[i] = value
}
case reflect.String:
for i := 0; i < v.Len(); i++ {
res[i] = handle_string_mutate(v.Index(i).Interface().(string), name)
}
// case reflect.Interface:
// for i := 0; i < v.Len(); i++ {
// switch v.Index(i).Interface().(type) {
// case map[string]interface{}:
// value, err := MutateMap(v.Index(i).Interface().(map[string]interface{}))
// if err != nil {
// return nil, err
// }
// res[i] = value
// case byte:
// value := make([]byte, v.Len())
// for i := 0; i < v.Len(); i++ {
// value[i] = v.Index(i).Interface().(uint8)
// }
// value = handle_bytes_mutate(value, name)
// for i := 0; i < len(value); i++ {
// res[i] = value[i]
// }
// default:
// errMsg := fmt.Sprintf("unknow data type %s\n", v.Index(0).Type().Kind().String())
// return nil, errors.New(errMsg)
// }
// }
default:
errMsg := fmt.Sprintf("unknow data type %s\n", v.Index(0).Type().Kind().String())
return nil, errors.New(errMsg)
}
return res, nil
}
func MutateMap(input map[string]interface{}) (map[string]interface{}, error) {
if seededRand.Intn(100) < nilChance {
return nil, nil
}
var err error
err = nil
for k, value := range input {
if strings.Contains(k, "Hash") {
fmt.Println(k)
input[k], err = value, nil
break
}
ident := reflect.ValueOf(value).Kind()
switch ident {
case reflect.Int, reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Uint, reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Float32, reflect.Float64:
input[k], err = handle_number_mutate(value)
case reflect.Bool:
input[k] = Generate_random_bool()
case reflect.String:
input[k] = handle_string_mutate(value.(string), k)
case reflect.Slice:
input[k], err = handleSlice(reflect.ValueOf(value), k)
if err != nil {
fmt.Println(err)
}
case reflect.Map:
if k == "Endorsement" {
break
}
input[k], err = MutateMap(value.(map[string]interface{}))
default:
errMsg := fmt.Sprintf("mutateMap fail, unknow value type, type is %s, value is %v\n",
ident, value)
return nil, errors.New(errMsg)
}
}
return input, err
}