77 lines
1.6 KiB
Go
77 lines
1.6 KiB
Go
//go: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 local
|
|
|
|
import (
|
|
"bufio"
|
|
"bytes"
|
|
"context"
|
|
_ "crypto/sha256"
|
|
"io"
|
|
"testing"
|
|
|
|
"github.com/opencontainers/go-digest"
|
|
|
|
"github.com/containerd/containerd/content"
|
|
)
|
|
|
|
func FuzzContentStoreWriter(data []byte) int {
|
|
t := &testing.T{}
|
|
ctx := context.Background()
|
|
ctx, _, cs, cleanup := contentStoreEnv(t)
|
|
defer cleanup()
|
|
|
|
cw, err := cs.Writer(ctx, content.WithRef("myref"))
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
if err := cw.Close(); err != nil {
|
|
return 0
|
|
}
|
|
|
|
// reopen, so we can test things
|
|
cw, err = cs.Writer(ctx, content.WithRef("myref"))
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
|
|
err = checkCopyFuzz(int64(len(data)), cw, bufio.NewReader(io.NopCloser(bytes.NewReader(data))))
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
expected := digest.FromBytes(data)
|
|
|
|
if err = cw.Commit(ctx, int64(len(data)), expected); err != nil {
|
|
return 0
|
|
}
|
|
return 1
|
|
}
|
|
|
|
func checkCopyFuzz(size int64, dst io.Writer, src io.Reader) error {
|
|
nn, err := io.Copy(dst, src)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
if nn != size {
|
|
return err
|
|
}
|
|
return nil
|
|
}
|