109 lines
2.4 KiB
Go
109 lines
2.4 KiB
Go
// Copyright 2021 ADA Logics Ltd
|
|
//
|
|
// 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 (
|
|
"context"
|
|
_ "crypto/sha256" // required by go-digest
|
|
"os"
|
|
|
|
fuzz "github.com/AdaLogics/go-fuzz-headers"
|
|
"github.com/containerd/containerd/v2/diff/apply"
|
|
"github.com/containerd/containerd/v2/diff/walking"
|
|
"github.com/containerd/containerd/v2/mount"
|
|
"github.com/containerd/containerd/v2/plugins/content/local"
|
|
ocispec "github.com/opencontainers/image-spec/specs-go/v1"
|
|
)
|
|
|
|
func FuzzDiffApply(data []byte) int {
|
|
f := fuzz.NewConsumer(data)
|
|
|
|
mountsQty, err := f.GetInt()
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
mounts := make([]mount.Mount, 0)
|
|
for i := 0; i < mountsQty%30; i++ {
|
|
m := mount.Mount{}
|
|
err = f.GenerateStruct(&m)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
mounts = append(mounts, m)
|
|
}
|
|
desc := ocispec.Descriptor{}
|
|
err = f.GenerateStruct(&desc)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
tmpdir, err := os.MkdirTemp("", "fuzzing-")
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
cs, err := local.NewStore(tmpdir)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
fsa := apply.NewFileSystemApplier(cs)
|
|
_, _ = fsa.Apply(context.Background(), desc, mounts)
|
|
return 1
|
|
}
|
|
|
|
func FuzzDiffCompare(data []byte) int {
|
|
f := fuzz.NewConsumer(data)
|
|
|
|
lowerQty, err := f.GetInt()
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
lower := make([]mount.Mount, 0)
|
|
for i := 0; i < lowerQty%30; i++ {
|
|
m := mount.Mount{}
|
|
err = f.GenerateStruct(&m)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
lower = append(lower, m)
|
|
}
|
|
|
|
upperQty, err := f.GetInt()
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
upper := make([]mount.Mount, 0)
|
|
for i := 0; i < upperQty%30; i++ {
|
|
m := mount.Mount{}
|
|
err = f.GenerateStruct(&m)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
upper = append(upper, m)
|
|
}
|
|
|
|
ctx := context.Background()
|
|
tmpdir, err := os.MkdirTemp("", "fuzzing-")
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
cs, err := local.NewStore(tmpdir)
|
|
if err != nil {
|
|
return 0
|
|
}
|
|
walker := walking.NewWalkingDiff(cs)
|
|
_, _ = walker.Compare(ctx, lower, upper)
|
|
return 1
|
|
}
|