Work on #61: Add support for ICMP

+ Update dependencies
2020-12-25 00:07:18 -05:00
parent c86173d46f
commit 83a5813daf
1004 changed files with 182274 additions and 64323 deletions
--- a/vendor/github.com/google/gofuzz/fuzz.go
+++ b/vendor/github.com/google/gofuzz/fuzz.go
@ -20,7 +20,11 @@ import (
 	"fmt"
 	"math/rand"
 	"reflect"
+	"regexp"
 	"time"
+
+	"github.com/google/gofuzz/bytesource"
+	"strings"
 )

 // fuzzFuncMap is a map from a type to a fuzzFunc that handles that type.
@ -28,13 +32,14 @@ type fuzzFuncMap map[reflect.Type]reflect.Value

 // Fuzzer knows how to fill any object with random fields.
 type Fuzzer struct {
-	fuzzFuncs        fuzzFuncMap
-	defaultFuzzFuncs fuzzFuncMap
-	r                *rand.Rand
-	nilChance        float64
-	minElements      int
-	maxElements      int
-	maxDepth         int
+	fuzzFuncs         fuzzFuncMap
+	defaultFuzzFuncs  fuzzFuncMap
+	r                 *rand.Rand
+	nilChance         float64
+	minElements       int
+	maxElements       int
+	maxDepth          int
+	skipFieldPatterns []*regexp.Regexp
 }

 // New returns a new Fuzzer. Customize your Fuzzer further by calling Funcs,
@ -59,6 +64,34 @@ func NewWithSeed(seed int64) *Fuzzer {
 	return f
 }

+// NewFromGoFuzz is a helper function that enables using gofuzz (this
+// project) with go-fuzz (https://github.com/dvyukov/go-fuzz) for continuous
+// fuzzing. Essentially, it enables translating the fuzzing bytes from
+// go-fuzz to any Go object using this library.
+//
+// This implementation promises a constant translation from a given slice of
+// bytes to the fuzzed objects. This promise will remain over future
+// versions of Go and of this library.
+//
+// Note: the returned Fuzzer should not be shared between multiple goroutines,
+// as its deterministic output will no longer be available.
+//
+// Example: use go-fuzz to test the function `MyFunc(int)` in the package
+// `mypackage`. Add the file: "mypacakge_fuzz.go" with the content:
+//
+// // +build gofuzz
+// package mypacakge
+// import fuzz "github.com/google/gofuzz"
+// func Fuzz(data []byte) int {
+// 	var i int
+// 	fuzz.NewFromGoFuzz(data).Fuzz(&i)
+// 	MyFunc(i)
+// 	return 0
+// }
+func NewFromGoFuzz(data []byte) *Fuzzer {
+	return New().RandSource(bytesource.New(data))
+}
+
 // Funcs adds each entry in fuzzFuncs as a custom fuzzing function.
 //
 // Each entry in fuzzFuncs must be a function taking two parameters.
@ -139,7 +172,7 @@ func (f *Fuzzer) genElementCount() int {
 }

 func (f *Fuzzer) genShouldFill() bool {
-	return f.r.Float64() > f.nilChance
+	return f.r.Float64() >= f.nilChance
 }

 // MaxDepth sets the maximum number of recursive fuzz calls that will be made
@ -150,6 +183,13 @@ func (f *Fuzzer) MaxDepth(d int) *Fuzzer {
 	return f
 }

+// Skip fields which match the supplied pattern. Call this multiple times if needed
+// This is useful to skip XXX_ fields generated by protobuf
+func (f *Fuzzer) SkipFieldsWithPattern(pattern *regexp.Regexp) *Fuzzer {
+	f.skipFieldPatterns = append(f.skipFieldPatterns, pattern)
+	return f
+}
+
 // Fuzz recursively fills all of obj's fields with something random.  First
 // this tries to find a custom fuzz function (see Funcs).  If there is no
 // custom function this tests whether the object implements fuzz.Interface and,
@ -231,6 +271,7 @@ func (fc *fuzzerContext) doFuzz(v reflect.Value, flags uint64) {
 		fn(v, fc.fuzzer.r)
 		return
 	}
+
 	switch v.Kind() {
 	case reflect.Map:
 		if fc.fuzzer.genShouldFill() {
@ -274,7 +315,17 @@ func (fc *fuzzerContext) doFuzz(v reflect.Value, flags uint64) {
 		v.Set(reflect.Zero(v.Type()))
 	case reflect.Struct:
 		for i := 0; i < v.NumField(); i++ {
-			fc.doFuzz(v.Field(i), 0)
+			skipField := false
+			fieldName := v.Type().Field(i).Name
+			for _, pattern := range fc.fuzzer.skipFieldPatterns {
+				if pattern.MatchString(fieldName) {
+					skipField = true
+					break
+				}
+			}
+			if !skipField {
+				fc.doFuzz(v.Field(i), 0)
+			}
 		}
 	case reflect.Chan:
 		fallthrough
@ -431,10 +482,10 @@ var fillFuncMap = map[reflect.Kind]func(reflect.Value, *rand.Rand){
 		v.SetFloat(r.Float64())
 	},
 	reflect.Complex64: func(v reflect.Value, r *rand.Rand) {
-		panic("unimplemented")
+		v.SetComplex(complex128(complex(r.Float32(), r.Float32())))
 	},
 	reflect.Complex128: func(v reflect.Value, r *rand.Rand) {
-		panic("unimplemented")
+		v.SetComplex(complex(r.Float64(), r.Float64()))
 	},
 	reflect.String: func(v reflect.Value, r *rand.Rand) {
 		v.SetString(randString(r))
@ -446,38 +497,105 @@ var fillFuncMap = map[reflect.Kind]func(reflect.Value, *rand.Rand){

 // randBool returns true or false randomly.
 func randBool(r *rand.Rand) bool {
-	if r.Int()&1 == 1 {
-		return true
-	}
-	return false
+	return r.Int31()&(1<<30) == 0
 }

-type charRange struct {
-	first, last rune
+type int63nPicker interface {
+	Int63n(int64) int64
 }

+// UnicodeRange describes a sequential range of unicode characters.
+// Last must be numerically greater than First.
+type UnicodeRange struct {
+	First, Last rune
+}
+
+// UnicodeRanges describes an arbitrary number of sequential ranges of unicode characters.
+// To be useful, each range must have at least one character (First <= Last) and
+// there must be at least one range.
+type UnicodeRanges []UnicodeRange
+
 // choose returns a random unicode character from the given range, using the
 // given randomness source.
-func (r *charRange) choose(rand *rand.Rand) rune {
-	count := int64(r.last - r.first)
-	return r.first + rune(rand.Int63n(count))
+func (ur UnicodeRange) choose(r int63nPicker) rune {
+	count := int64(ur.Last - ur.First + 1)
+	return ur.First + rune(r.Int63n(count))
 }

-var unicodeRanges = []charRange{
+// CustomStringFuzzFunc constructs a FuzzFunc which produces random strings.
+// Each character is selected from the range ur. If there are no characters
+// in the range (cr.Last < cr.First), this will panic.
+func (ur UnicodeRange) CustomStringFuzzFunc() func(s *string, c Continue) {
+	ur.check()
+	return func(s *string, c Continue) {
+		*s = ur.randString(c.Rand)
+	}
+}
+
+// check is a function that used to check whether the first of ur(UnicodeRange)
+// is greater than the last one.
+func (ur UnicodeRange) check() {
+	if ur.Last < ur.First {
+		panic("The last encoding must be greater than the first one.")
+	}
+}
+
+// randString of UnicodeRange makes a random string up to 20 characters long.
+// Each character is selected form ur(UnicodeRange).
+func (ur UnicodeRange) randString(r *rand.Rand) string {
+	n := r.Intn(20)
+	sb := strings.Builder{}
+	sb.Grow(n)
+	for i := 0; i < n; i++ {
+		sb.WriteRune(ur.choose(r))
+	}
+	return sb.String()
+}
+
+// defaultUnicodeRanges sets a default unicode range when user do not set
+// CustomStringFuzzFunc() but wants fuzz string.
+var defaultUnicodeRanges = UnicodeRanges{
 	{' ', '~'},           // ASCII characters
 	{'\u00a0', '\u02af'}, // Multi-byte encoded characters
 	{'\u4e00', '\u9fff'}, // Common CJK (even longer encodings)
 }

+// CustomStringFuzzFunc constructs a FuzzFunc which produces random strings.
+// Each character is selected from one of the ranges of ur(UnicodeRanges).
+// Each range has an equal probability of being chosen. If there are no ranges,
+// or a selected range has no characters (.Last < .First), this will panic.
+// Do not modify any of the ranges in ur after calling this function.
+func (ur UnicodeRanges) CustomStringFuzzFunc() func(s *string, c Continue) {
+	// Check unicode ranges slice is empty.
+	if len(ur) == 0 {
+		panic("UnicodeRanges is empty.")
+	}
+	// if not empty, each range should be checked.
+	for i := range ur {
+		ur[i].check()
+	}
+	return func(s *string, c Continue) {
+		*s = ur.randString(c.Rand)
+	}
+}
+
+// randString of UnicodeRanges makes a random string up to 20 characters long.
+// Each character is selected form one of the ranges of ur(UnicodeRanges),
+// and each range has an equal probability of being chosen.
+func (ur UnicodeRanges) randString(r *rand.Rand) string {
+	n := r.Intn(20)
+	sb := strings.Builder{}
+	sb.Grow(n)
+	for i := 0; i < n; i++ {
+		sb.WriteRune(ur[r.Intn(len(ur))].choose(r))
+	}
+	return sb.String()
+}
+
 // randString makes a random string up to 20 characters long. The returned string
 // may include a variety of (valid) UTF-8 encodings.
 func randString(r *rand.Rand) string {
-	n := r.Intn(20)
-	runes := make([]rune, n)
-	for i := range runes {
-		runes[i] = unicodeRanges[r.Intn(len(unicodeRanges))].choose(r)
-	}
-	return string(runes)
+	return defaultUnicodeRanges.randString(r)
 }

 // randUint64 makes random 64 bit numbers.