87 lines
2.0 KiB
Go
87 lines
2.0 KiB
Go
//go:build gofuzz
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// +build gofuzz
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/*
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Copyright The containerd Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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/*
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This fuzzer is run continuously by OSS-fuzz.
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It is stored in contrib/fuzz for organization,
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but in order to execute it, it must be moved to
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remotes/docker first.
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*/
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package docker
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import (
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"context"
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"fmt"
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"io"
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"net/http"
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"net/http/httptest"
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"net/url"
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refDocker "github.com/containerd/containerd/reference/docker"
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)
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func FuzzFetcher(data []byte) int {
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dataLen := len(data)
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if dataLen == 0 {
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return -1
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}
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s := httptest.NewServer(http.HandlerFunc(func(rw http.ResponseWriter, r *http.Request) {
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rw.Header().Set("content-range", fmt.Sprintf("bytes %d-%d/%d", 0, dataLen-1, dataLen))
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rw.Header().Set("content-length", fmt.Sprintf("%d", dataLen))
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rw.Write(data)
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}))
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defer s.Close()
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u, err := url.Parse(s.URL)
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if err != nil {
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return 0
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}
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f := dockerFetcher{&dockerBase{
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repository: "nonempty",
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}}
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host := RegistryHost{
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Client: s.Client(),
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Host: u.Host,
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Scheme: u.Scheme,
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Path: u.Path,
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}
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ctx := context.Background()
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req := f.request(host, http.MethodGet)
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rc, err := f.open(ctx, req, "", 0)
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if err != nil {
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return 0
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}
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b, err := io.ReadAll(rc)
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if err != nil {
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return 0
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}
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expected := data
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if len(b) != len(expected) {
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panic("len of request is not equal to len of expected but should be")
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}
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return 1
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}
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func FuzzParseDockerRef(data []byte) int {
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_, _ = refDocker.ParseDockerRef(string(data))
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return 1
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}
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