oss-fuzz/projects/compress/setup_dicts.go

101 lines
2.2 KiB
Go

// Copyright 2023 Google LLC
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package main
import (
"bytes"
"flag"
"fmt"
"io"
"os"
"strings"
"text/template"
"github.com/klauspost/compress/zip"
)
var (
dictPath = flag.String("dict-path", "", "dict path")
outputFile = flag.String("output-file", "", "output file")
)
func main() {
flag.Parse()
if *dictPath == "" {
panic("Need a dict path")
}
if *outputFile == "" {
panic("Need an output file")
}
dicts := getFuzzDicts(*dictPath)
t, err := template.New("todos").Parse(`
package zstd
var fuzzDicts = make([][]byte, 0)
func init() {
{{range $val := .}}
fuzzDicts = append(fuzzDicts, {{$val}})
{{end}}
}
`)
if err != nil {
panic(err)
}
f, err := os.Create(*outputFile)
err = t.Execute(f, dicts)
if err != nil {
panic(err)
}
f.Close()
}
func getFuzzDicts(path string) []string {
data, err := os.ReadFile(path)
if err != nil {
panic(err)
}
zr, err := zip.NewReader(bytes.NewReader(data), int64(len(data)))
if err != nil {
panic(err)
}
var dicts [][]byte
for _, tt := range zr.File {
if !strings.HasSuffix(tt.Name, ".dict") {
continue
}
func() {
r, err := tt.Open()
if err != nil {
panic(err)
}
defer r.Close()
in, err := io.ReadAll(r)
if err != nil {
panic(err)
}
dicts = append(dicts, in)
}()
}
stringDicts := make([]string, 0)
for _, d := range dicts {
stringedArray := fmt.Sprintf("%v", d)
withComma := strings.Replace(stringedArray, " ", ", ", -1)
withClosingBracket := strings.Replace(withComma, "]", "}", -1)
withOpenBracket := strings.Replace(withClosingBracket, "[", "[]byte{", -1)
stringDicts = append(stringDicts, withOpenBracket)
}
return stringDicts
}