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|
// +build gofuzz
package qpack
import (
"bytes"
"fmt"
"reflect"
"github.com/marten-seemann/qpack"
)
func Fuzz(data []byte) int {
if len(data) < 1 {
return 0
}
chunkLen := int(data[0]) + 1
data = data[1:]
fields, err := qpack.NewDecoder(nil).DecodeFull(data)
if err != nil {
return 0
}
if len(fields) == 0 {
return 0
}
var writtenFields []qpack.HeaderField
decoder := qpack.NewDecoder(func(hf qpack.HeaderField) {
writtenFields = append(writtenFields, hf)
})
for len(data) > 0 {
var chunk []byte
if chunkLen <= len(data) {
chunk = data[:chunkLen]
data = data[chunkLen:]
} else {
chunk = data
data = nil
}
n, err := decoder.Write(chunk)
if err != nil {
return 0
}
if n != len(chunk) {
panic("len error")
}
}
if !reflect.DeepEqual(fields, writtenFields) {
fmt.Printf("%#v vs %#v", fields, writtenFields)
panic("Write() and DecodeFull() produced different results")
}
buf := &bytes.Buffer{}
encoder := qpack.NewEncoder(buf)
for _, hf := range fields {
if err := encoder.WriteField(hf); err != nil {
panic(err)
}
}
if err := encoder.Close(); err != nil {
panic(err)
}
encodedFields, err := qpack.NewDecoder(nil).DecodeFull(buf.Bytes())
if err != nil {
fmt.Printf("Fields: %#v\n", fields)
panic(err)
}
if !reflect.DeepEqual(fields, encodedFields) {
fmt.Printf("%#v vs %#v", fields, encodedFields)
panic("unequal")
}
return 0
}
|
