50f1a4e426
It is too noisy and not really useful if the input is random. Signed-off-by: Kazuyoshi Kato <katokazu@amazon.com>
87 lines
2.2 KiB
Go
87 lines
2.2 KiB
Go
//go:build gofuzz
|
|
// +build gofuzz
|
|
|
|
/*
|
|
Copyright The containerd Authors.
|
|
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 fuzz
|
|
|
|
import (
|
|
"bytes"
|
|
"context"
|
|
"os"
|
|
|
|
fuzz "github.com/AdaLogics/go-fuzz-headers"
|
|
"github.com/sirupsen/logrus"
|
|
|
|
"github.com/containerd/containerd/archive"
|
|
"github.com/containerd/containerd/content/local"
|
|
imageArchive "github.com/containerd/containerd/images/archive"
|
|
"github.com/containerd/containerd/log"
|
|
)
|
|
|
|
// FuzzApply implements a fuzzer that applies
|
|
// a fuzzed tar archive on a directory
|
|
func FuzzApply(data []byte) int {
|
|
ctx := context.Background()
|
|
|
|
// Apply() is logging the below message, which is too noisy and not really useful
|
|
// if the input is random.
|
|
//
|
|
// level=warning msg="ignored xattr ... in archive" error="operation not supported"
|
|
log.G(ctx).Logger.SetLevel(logrus.PanicLevel)
|
|
|
|
f := fuzz.NewConsumer(data)
|
|
iters, err := f.GetInt()
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
maxIters := 20
|
|
tmpDir, err := os.MkdirTemp("", "prefix-test")
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
defer os.RemoveAll(tmpDir)
|
|
for i := 0; i < iters%maxIters; i++ {
|
|
rBytes, err := f.TarBytes()
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
r := bytes.NewReader(rBytes)
|
|
_, _ = archive.Apply(ctx, tmpDir, r)
|
|
}
|
|
return 1
|
|
}
|
|
|
|
// FuzzImportIndex implements a fuzzer
|
|
// that targets archive.ImportIndex()
|
|
func FuzzImportIndex(data []byte) int {
|
|
f := fuzz.NewConsumer(data)
|
|
tarBytes, err := f.TarBytes()
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
ctx := context.Background()
|
|
r := bytes.NewReader(tarBytes)
|
|
tmpdir, err := os.MkdirTemp("", "fuzzing-")
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
cs, err := local.NewStore(tmpdir)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
_, _ = imageArchive.ImportIndex(ctx, cs, r)
|
|
return 1
|
|
}
|