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de52a3bcaa
We noticed a regression since the 1.7.1 patch after some refactoring. This patch corrects the behavior and adds integration tests for modified manifest and rootfs layer blobs. Docker-DCO-1.1-Signed-off-by: Josh Hawn <josh.hawn@docker.com> (github: jlhawn)
120 lines
3 KiB
Go
120 lines
3 KiB
Go
package main
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import (
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"fmt"
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"io/ioutil"
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"net/http"
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"os"
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"os/exec"
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"path/filepath"
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"github.com/docker/distribution/digest"
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"github.com/go-check/check"
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)
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const v2binary = "registry-v2"
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type testRegistryV2 struct {
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cmd *exec.Cmd
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dir string
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}
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func newTestRegistryV2(c *check.C) (*testRegistryV2, error) {
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template := `version: 0.1
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loglevel: debug
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storage:
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filesystem:
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rootdirectory: %s
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http:
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addr: %s`
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tmp, err := ioutil.TempDir("", "registry-test-")
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if err != nil {
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return nil, err
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}
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confPath := filepath.Join(tmp, "config.yaml")
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config, err := os.Create(confPath)
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if err != nil {
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return nil, err
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}
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if _, err := fmt.Fprintf(config, template, tmp, privateRegistryURL); err != nil {
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os.RemoveAll(tmp)
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return nil, err
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}
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cmd := exec.Command(v2binary, confPath)
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if err := cmd.Start(); err != nil {
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os.RemoveAll(tmp)
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if os.IsNotExist(err) {
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c.Skip(err.Error())
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}
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return nil, err
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}
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return &testRegistryV2{
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cmd: cmd,
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dir: tmp,
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}, nil
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}
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func (t *testRegistryV2) Ping() error {
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// We always ping through HTTP for our test registry.
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resp, err := http.Get(fmt.Sprintf("http://%s/v2/", privateRegistryURL))
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if err != nil {
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return err
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}
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if resp.StatusCode != 200 {
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return fmt.Errorf("registry ping replied with an unexpected status code %d", resp.StatusCode)
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}
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return nil
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}
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func (t *testRegistryV2) Close() {
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t.cmd.Process.Kill()
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os.RemoveAll(t.dir)
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}
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func (t *testRegistryV2) getBlobFilename(blobDigest digest.Digest) string {
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// Split the digest into it's algorithm and hex components.
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dgstAlg, dgstHex := blobDigest.Algorithm(), blobDigest.Hex()
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// The path to the target blob data looks something like:
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// baseDir + "docker/registry/v2/blobs/sha256/a3/a3ed...46d4/data"
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return fmt.Sprintf("%s/docker/registry/v2/blobs/%s/%s/%s/data", t.dir, dgstAlg, dgstHex[:2], dgstHex)
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}
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func (t *testRegistryV2) readBlobContents(c *check.C, blobDigest digest.Digest) []byte {
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// Load the target manifest blob.
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manifestBlob, err := ioutil.ReadFile(t.getBlobFilename(blobDigest))
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if err != nil {
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c.Fatalf("unable to read blob: %s", err)
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}
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return manifestBlob
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}
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func (t *testRegistryV2) writeBlobContents(c *check.C, blobDigest digest.Digest, data []byte) {
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if err := ioutil.WriteFile(t.getBlobFilename(blobDigest), data, os.FileMode(0644)); err != nil {
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c.Fatalf("unable to write malicious data blob: %s", err)
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}
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}
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func (t *testRegistryV2) tempMoveBlobData(c *check.C, blobDigest digest.Digest) (undo func()) {
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tempFile, err := ioutil.TempFile("", "registry-temp-blob-")
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if err != nil {
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c.Fatalf("unable to get temporary blob file: %s", err)
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}
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tempFile.Close()
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blobFilename := t.getBlobFilename(blobDigest)
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// Move the existing data file aside, so that we can replace it with a
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// another blob of data.
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if err := os.Rename(blobFilename, tempFile.Name()); err != nil {
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os.Remove(tempFile.Name())
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c.Fatalf("unable to move data blob: %s", err)
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}
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return func() {
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os.Rename(tempFile.Name(), blobFilename)
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os.Remove(tempFile.Name())
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}
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}
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