mirror of
https://github.com/refraction-networking/uquic.git
synced 2025-04-03 04:07:35 +03:00
use the fuzzing helper functions to generate the frames seed corpus
This commit is contained in:
Marten Seemann
parent
745e51ac4f
commit
5090dd6199
65 changed files with 31 additions and 71 deletions
2
.gitignore
vendored
2
.gitignore
vendored
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@ -11,5 +11,3 @@ fuzzing/*/crashers
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fuzzing/*/sonarprofile
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fuzzing/*/suppressions
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fuzzing/*/corpus/
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!fuzzing/frames/single-frame*
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!fuzzing/frames/multiple-frame*
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@ -2,12 +2,12 @@ package main
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import (
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"bytes"
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"fmt"
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"log"
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"math/rand"
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"os"
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"time"
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"github.com/lucas-clemente/quic-go"
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"github.com/lucas-clemente/quic-go/fuzzing/internal/helper"
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"github.com/lucas-clemente/quic-go/internal/protocol"
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"github.com/lucas-clemente/quic-go/internal/qerr"
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"github.com/lucas-clemente/quic-go/internal/wire"
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@ -246,19 +246,17 @@ func getFrames() []wire.Frame {
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}
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func main() {
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rand.Seed(42)
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for i, f := range getFrames() {
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for _, f := range getFrames() {
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b := &bytes.Buffer{}
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if err := f.Write(b, version); err != nil {
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panic(err)
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log.Fatal(err)
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}
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if err := writeCorpusFile(fmt.Sprintf("single-frame-%d", i), b.Bytes()); err != nil {
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panic(err)
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if err := helper.WriteCorpusFileWithPrefix("corpus", b.Bytes(), 1); err != nil {
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log.Fatal(err)
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}
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}
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for i := 0; i < 25; i++ {
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for i := 0; i < 30; i++ {
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frames := getFrames()
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b := &bytes.Buffer{}
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@ -268,26 +266,14 @@ func main() {
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}
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f := frames[rand.Intn(len(frames))]
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if err := f.Write(b, version); err != nil {
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panic(err)
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log.Fatal(err)
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}
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if rand.Intn(10) == 0 { // write a PADDING frame
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b.WriteByte(0x0)
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}
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}
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if err := writeCorpusFile(fmt.Sprintf("multiple-frames-%d", i), b.Bytes()); err != nil {
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panic(err)
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if err := helper.WriteCorpusFileWithPrefix("corpus", b.Bytes(), 1); err != nil {
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log.Fatal(err)
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}
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}
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}
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func writeCorpusFile(name string, data []byte) error {
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file, err := os.Create("corpus/" + name)
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if err != nil {
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return err
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}
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data = append(getRandomData(1), data...)
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if _, err := file.Write(data); err != nil {
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return err
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}
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return file.Close()
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}
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@ -1,2 +0,0 @@
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}
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@ -8,27 +8,34 @@ import (
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"github.com/lucas-clemente/quic-go/internal/wire"
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)
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const version = protocol.VersionTLS
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// PrefixLen is the number of bytes used for configuration
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const PrefixLen = 1
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func toEncLevel(v uint8) protocol.EncryptionLevel {
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switch v % 3 {
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default:
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return protocol.EncryptionInitial
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case 1:
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return protocol.EncryptionHandshake
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case 2:
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return protocol.Encryption1RTT
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}
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}
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// Fuzz fuzzes the QUIC frames.
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//go:generate go run ./cmd/corpus.go
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func Fuzz(data []byte) int {
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const version = protocol.VersionTLS
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if len(data) < 1 {
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if len(data) < PrefixLen {
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return 0
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}
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encLevel := toEncLevel(data[0])
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data = data[PrefixLen:]
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parser := wire.NewFrameParser(version)
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parser.SetAckDelayExponent(protocol.DefaultAckDelayExponent)
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var encLevel protocol.EncryptionLevel
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switch data[0] % 3 {
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case 0:
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encLevel = protocol.EncryptionInitial
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case 1:
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encLevel = protocol.EncryptionHandshake
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case 2:
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encLevel = protocol.Encryption1RTT
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}
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data = data[1:]
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r := bytes.NewReader(data)
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initialLen := r.Len()
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