package handlers import ( "bytes" "encoding/json" "fmt" "io" "io/ioutil" "net/http" "net/http/httptest" "net/http/httputil" "net/url" "os" "path" "reflect" "regexp" "strconv" "strings" "testing" "github.com/docker/distribution/configuration" "github.com/docker/distribution/context" "github.com/docker/distribution/digest" "github.com/docker/distribution/manifest" "github.com/docker/distribution/manifest/schema1" "github.com/docker/distribution/registry/api/errcode" "github.com/docker/distribution/registry/api/v2" _ "github.com/docker/distribution/registry/storage/driver/inmemory" "github.com/docker/distribution/testutil" "github.com/docker/libtrust" "github.com/gorilla/handlers" ) var headerConfig = http.Header{ "X-Content-Type-Options": []string{"nosniff"}, } // TestCheckAPI hits the base endpoint (/v2/) ensures we return the specified // 200 OK response. func TestCheckAPI(t *testing.T) { env := newTestEnv(t, false) baseURL, err := env.builder.BuildBaseURL() if err != nil { t.Fatalf("unexpected error building base url: %v", err) } resp, err := http.Get(baseURL) if err != nil { t.Fatalf("unexpected error issuing request: %v", err) } defer resp.Body.Close() checkResponse(t, "issuing api base check", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Content-Type": []string{"application/json; charset=utf-8"}, "Content-Length": []string{"2"}, }) p, err := ioutil.ReadAll(resp.Body) if err != nil { t.Fatalf("unexpected error reading response body: %v", err) } if string(p) != "{}" { t.Fatalf("unexpected response body: %v", string(p)) } } // TestCatalogAPI tests the /v2/_catalog endpoint func TestCatalogAPI(t *testing.T) { chunkLen := 2 env := newTestEnv(t, false) values := url.Values{ "last": []string{""}, "n": []string{strconv.Itoa(chunkLen)}} catalogURL, err := env.builder.BuildCatalogURL(values) if err != nil { t.Fatalf("unexpected error building catalog url: %v", err) } // ----------------------------------- // try to get an empty catalog resp, err := http.Get(catalogURL) if err != nil { t.Fatalf("unexpected error issuing request: %v", err) } defer resp.Body.Close() checkResponse(t, "issuing catalog api check", resp, http.StatusOK) var ctlg struct { Repositories []string `json:"repositories"` } dec := json.NewDecoder(resp.Body) if err := dec.Decode(&ctlg); err != nil { t.Fatalf("error decoding fetched manifest: %v", err) } // we haven't pushed anything to the registry yet if len(ctlg.Repositories) != 0 { t.Fatalf("repositories has unexpected values") } if resp.Header.Get("Link") != "" { t.Fatalf("repositories has more data when none expected") } // ----------------------------------- // push something to the registry and try again images := []string{"foo/aaaa", "foo/bbbb", "foo/cccc"} for _, image := range images { createRepository(env, t, image, "sometag") } resp, err = http.Get(catalogURL) if err != nil { t.Fatalf("unexpected error issuing request: %v", err) } defer resp.Body.Close() checkResponse(t, "issuing catalog api check", resp, http.StatusOK) dec = json.NewDecoder(resp.Body) if err = dec.Decode(&ctlg); err != nil { t.Fatalf("error decoding fetched manifest: %v", err) } if len(ctlg.Repositories) != chunkLen { t.Fatalf("repositories has unexpected values") } for _, image := range images[:chunkLen] { if !contains(ctlg.Repositories, image) { t.Fatalf("didn't find our repository '%s' in the catalog", image) } } link := resp.Header.Get("Link") if link == "" { t.Fatalf("repositories has less data than expected") } newValues := checkLink(t, link, chunkLen, ctlg.Repositories[len(ctlg.Repositories)-1]) // ----------------------------------- // get the last chunk of data catalogURL, err = env.builder.BuildCatalogURL(newValues) if err != nil { t.Fatalf("unexpected error building catalog url: %v", err) } resp, err = http.Get(catalogURL) if err != nil { t.Fatalf("unexpected error issuing request: %v", err) } defer resp.Body.Close() checkResponse(t, "issuing catalog api check", resp, http.StatusOK) dec = json.NewDecoder(resp.Body) if err = dec.Decode(&ctlg); err != nil { t.Fatalf("error decoding fetched manifest: %v", err) } if len(ctlg.Repositories) != 1 { t.Fatalf("repositories has unexpected values") } lastImage := images[len(images)-1] if !contains(ctlg.Repositories, lastImage) { t.Fatalf("didn't find our repository '%s' in the catalog", lastImage) } link = resp.Header.Get("Link") if link != "" { t.Fatalf("catalog has unexpected data") } } func checkLink(t *testing.T, urlStr string, numEntries int, last string) url.Values { re := regexp.MustCompile("<(/v2/_catalog.*)>; rel=\"next\"") matches := re.FindStringSubmatch(urlStr) if len(matches) != 2 { t.Fatalf("Catalog link address response was incorrect") } linkURL, _ := url.Parse(matches[1]) urlValues := linkURL.Query() if urlValues.Get("n") != strconv.Itoa(numEntries) { t.Fatalf("Catalog link entry size is incorrect") } if urlValues.Get("last") != last { t.Fatal("Catalog link last entry is incorrect") } return urlValues } func contains(elems []string, e string) bool { for _, elem := range elems { if elem == e { return true } } return false } func TestURLPrefix(t *testing.T) { config := configuration.Configuration{ Storage: configuration.Storage{ "inmemory": configuration.Parameters{}, }, } config.HTTP.Prefix = "/test/" config.HTTP.Headers = headerConfig env := newTestEnvWithConfig(t, &config) baseURL, err := env.builder.BuildBaseURL() if err != nil { t.Fatalf("unexpected error building base url: %v", err) } parsed, _ := url.Parse(baseURL) if !strings.HasPrefix(parsed.Path, config.HTTP.Prefix) { t.Fatalf("Prefix %v not included in test url %v", config.HTTP.Prefix, baseURL) } resp, err := http.Get(baseURL) if err != nil { t.Fatalf("unexpected error issuing request: %v", err) } defer resp.Body.Close() checkResponse(t, "issuing api base check", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Content-Type": []string{"application/json; charset=utf-8"}, "Content-Length": []string{"2"}, }) } type blobArgs struct { imageName string layerFile io.ReadSeeker layerDigest digest.Digest } func makeBlobArgs(t *testing.T) blobArgs { layerFile, layerDigest, err := testutil.CreateRandomTarFile() if err != nil { t.Fatalf("error creating random layer file: %v", err) } args := blobArgs{ imageName: "foo/bar", layerFile: layerFile, layerDigest: layerDigest, } return args } // TestBlobAPI conducts a full test of the of the blob api. func TestBlobAPI(t *testing.T) { deleteEnabled := false env := newTestEnv(t, deleteEnabled) args := makeBlobArgs(t) testBlobAPI(t, env, args) deleteEnabled = true env = newTestEnv(t, deleteEnabled) args = makeBlobArgs(t) testBlobAPI(t, env, args) } func TestBlobDelete(t *testing.T) { deleteEnabled := true env := newTestEnv(t, deleteEnabled) args := makeBlobArgs(t) env = testBlobAPI(t, env, args) testBlobDelete(t, env, args) } func TestBlobDeleteDisabled(t *testing.T) { deleteEnabled := false env := newTestEnv(t, deleteEnabled) args := makeBlobArgs(t) imageName := args.imageName layerDigest := args.layerDigest layerURL, err := env.builder.BuildBlobURL(imageName, layerDigest) if err != nil { t.Fatalf("error building url: %v", err) } resp, err := httpDelete(layerURL) if err != nil { t.Fatalf("unexpected error deleting when disabled: %v", err) } checkResponse(t, "status of disabled delete", resp, http.StatusMethodNotAllowed) } func testBlobAPI(t *testing.T, env *testEnv, args blobArgs) *testEnv { // TODO(stevvooe): This test code is complete junk but it should cover the // complete flow. This must be broken down and checked against the // specification *before* we submit the final to docker core. imageName := args.imageName layerFile := args.layerFile layerDigest := args.layerDigest // ----------------------------------- // Test fetch for non-existent content layerURL, err := env.builder.BuildBlobURL(imageName, layerDigest) if err != nil { t.Fatalf("error building url: %v", err) } resp, err := http.Get(layerURL) if err != nil { t.Fatalf("unexpected error fetching non-existent layer: %v", err) } checkResponse(t, "fetching non-existent content", resp, http.StatusNotFound) // ------------------------------------------ // Test head request for non-existent content resp, err = http.Head(layerURL) if err != nil { t.Fatalf("unexpected error checking head on non-existent layer: %v", err) } checkResponse(t, "checking head on non-existent layer", resp, http.StatusNotFound) // ------------------------------------------ // Start an upload, check the status then cancel uploadURLBase, uploadUUID := startPushLayer(t, env.builder, imageName) // A status check should work resp, err = http.Get(uploadURLBase) if err != nil { t.Fatalf("unexpected error getting upload status: %v", err) } checkResponse(t, "status of deleted upload", resp, http.StatusNoContent) checkHeaders(t, resp, http.Header{ "Location": []string{"*"}, "Range": []string{"0-0"}, "Docker-Upload-UUID": []string{uploadUUID}, }) req, err := http.NewRequest("DELETE", uploadURLBase, nil) if err != nil { t.Fatalf("unexpected error creating delete request: %v", err) } resp, err = http.DefaultClient.Do(req) if err != nil { t.Fatalf("unexpected error sending delete request: %v", err) } checkResponse(t, "deleting upload", resp, http.StatusNoContent) // A status check should result in 404 resp, err = http.Get(uploadURLBase) if err != nil { t.Fatalf("unexpected error getting upload status: %v", err) } checkResponse(t, "status of deleted upload", resp, http.StatusNotFound) // ----------------------------------------- // Do layer push with an empty body and different digest uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName) resp, err = doPushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, bytes.NewReader([]byte{})) if err != nil { t.Fatalf("unexpected error doing bad layer push: %v", err) } checkResponse(t, "bad layer push", resp, http.StatusBadRequest) checkBodyHasErrorCodes(t, "bad layer push", resp, v2.ErrorCodeDigestInvalid) // ----------------------------------------- // Do layer push with an empty body and correct digest zeroDigest, err := digest.FromReader(bytes.NewReader([]byte{})) if err != nil { t.Fatalf("unexpected error digesting empty buffer: %v", err) } uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, zeroDigest, uploadURLBase, bytes.NewReader([]byte{})) // ----------------------------------------- // Do layer push with an empty body and correct digest // This is a valid but empty tarfile! emptyTar := bytes.Repeat([]byte("\x00"), 1024) emptyDigest, err := digest.FromReader(bytes.NewReader(emptyTar)) if err != nil { t.Fatalf("unexpected error digesting empty tar: %v", err) } uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, emptyDigest, uploadURLBase, bytes.NewReader(emptyTar)) // ------------------------------------------ // Now, actually do successful upload. layerLength, _ := layerFile.Seek(0, os.SEEK_END) layerFile.Seek(0, os.SEEK_SET) uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile) // ------------------------------------------ // Now, push just a chunk layerFile.Seek(0, 0) canonicalDigester := digest.Canonical.New() if _, err := io.Copy(canonicalDigester.Hash(), layerFile); err != nil { t.Fatalf("error copying to digest: %v", err) } canonicalDigest := canonicalDigester.Digest() layerFile.Seek(0, 0) uploadURLBase, uploadUUID = startPushLayer(t, env.builder, imageName) uploadURLBase, dgst := pushChunk(t, env.builder, imageName, uploadURLBase, layerFile, layerLength) finishUpload(t, env.builder, imageName, uploadURLBase, dgst) // ------------------------ // Use a head request to see if the layer exists. resp, err = http.Head(layerURL) if err != nil { t.Fatalf("unexpected error checking head on existing layer: %v", err) } checkResponse(t, "checking head on existing layer", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Content-Length": []string{fmt.Sprint(layerLength)}, "Docker-Content-Digest": []string{canonicalDigest.String()}, }) // ---------------- // Fetch the layer! resp, err = http.Get(layerURL) if err != nil { t.Fatalf("unexpected error fetching layer: %v", err) } checkResponse(t, "fetching layer", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Content-Length": []string{fmt.Sprint(layerLength)}, "Docker-Content-Digest": []string{canonicalDigest.String()}, }) // Verify the body verifier, err := digest.NewDigestVerifier(layerDigest) if err != nil { t.Fatalf("unexpected error getting digest verifier: %s", err) } io.Copy(verifier, resp.Body) if !verifier.Verified() { t.Fatalf("response body did not pass verification") } // ---------------- // Fetch the layer with an invalid digest badURL := strings.Replace(layerURL, "sha256", "sha257", 1) resp, err = http.Get(badURL) if err != nil { t.Fatalf("unexpected error fetching layer: %v", err) } checkResponse(t, "fetching layer bad digest", resp, http.StatusBadRequest) // Cache headers resp, err = http.Get(layerURL) if err != nil { t.Fatalf("unexpected error fetching layer: %v", err) } checkResponse(t, "fetching layer", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Content-Length": []string{fmt.Sprint(layerLength)}, "Docker-Content-Digest": []string{canonicalDigest.String()}, "ETag": []string{fmt.Sprintf(`"%s"`, canonicalDigest)}, "Cache-Control": []string{"max-age=31536000"}, }) // Matching etag, gives 304 etag := resp.Header.Get("Etag") req, err = http.NewRequest("GET", layerURL, nil) if err != nil { t.Fatalf("Error constructing request: %s", err) } req.Header.Set("If-None-Match", etag) resp, err = http.DefaultClient.Do(req) if err != nil { t.Fatalf("Error constructing request: %s", err) } checkResponse(t, "fetching layer with etag", resp, http.StatusNotModified) // Non-matching etag, gives 200 req, err = http.NewRequest("GET", layerURL, nil) if err != nil { t.Fatalf("Error constructing request: %s", err) } req.Header.Set("If-None-Match", "") resp, err = http.DefaultClient.Do(req) checkResponse(t, "fetching layer with invalid etag", resp, http.StatusOK) // Missing tests: // - Upload the same tar file under and different repository and // ensure the content remains uncorrupted. return env } func testBlobDelete(t *testing.T, env *testEnv, args blobArgs) { // Upload a layer imageName := args.imageName layerFile := args.layerFile layerDigest := args.layerDigest layerURL, err := env.builder.BuildBlobURL(imageName, layerDigest) if err != nil { t.Fatalf(err.Error()) } // --------------- // Delete a layer resp, err := httpDelete(layerURL) if err != nil { t.Fatalf("unexpected error deleting layer: %v", err) } checkResponse(t, "deleting layer", resp, http.StatusAccepted) checkHeaders(t, resp, http.Header{ "Content-Length": []string{"0"}, }) // --------------- // Try and get it back // Use a head request to see if the layer exists. resp, err = http.Head(layerURL) if err != nil { t.Fatalf("unexpected error checking head on existing layer: %v", err) } checkResponse(t, "checking existence of deleted layer", resp, http.StatusNotFound) // Delete already deleted layer resp, err = httpDelete(layerURL) if err != nil { t.Fatalf("unexpected error deleting layer: %v", err) } checkResponse(t, "deleting layer", resp, http.StatusNotFound) // ---------------- // Attempt to delete a layer with an invalid digest badURL := strings.Replace(layerURL, "sha256", "sha257", 1) resp, err = httpDelete(badURL) if err != nil { t.Fatalf("unexpected error fetching layer: %v", err) } checkResponse(t, "deleting layer bad digest", resp, http.StatusBadRequest) // ---------------- // Reupload previously deleted blob layerFile.Seek(0, os.SEEK_SET) uploadURLBase, _ := startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile) layerFile.Seek(0, os.SEEK_SET) canonicalDigester := digest.Canonical.New() if _, err := io.Copy(canonicalDigester.Hash(), layerFile); err != nil { t.Fatalf("error copying to digest: %v", err) } canonicalDigest := canonicalDigester.Digest() // ------------------------ // Use a head request to see if it exists resp, err = http.Head(layerURL) if err != nil { t.Fatalf("unexpected error checking head on existing layer: %v", err) } layerLength, _ := layerFile.Seek(0, os.SEEK_END) checkResponse(t, "checking head on reuploaded layer", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Content-Length": []string{fmt.Sprint(layerLength)}, "Docker-Content-Digest": []string{canonicalDigest.String()}, }) } func TestDeleteDisabled(t *testing.T) { env := newTestEnv(t, false) imageName := "foo/bar" // "build" our layer file layerFile, layerDigest, err := testutil.CreateRandomTarFile() if err != nil { t.Fatalf("error creating random layer file: %v", err) } layerURL, err := env.builder.BuildBlobURL(imageName, layerDigest) if err != nil { t.Fatalf("Error building blob URL") } uploadURLBase, _ := startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile) resp, err := httpDelete(layerURL) if err != nil { t.Fatalf("unexpected error deleting layer: %v", err) } checkResponse(t, "deleting layer with delete disabled", resp, http.StatusMethodNotAllowed) } func TestDeleteReadOnly(t *testing.T) { env := newTestEnv(t, true) imageName := "foo/bar" // "build" our layer file layerFile, layerDigest, err := testutil.CreateRandomTarFile() if err != nil { t.Fatalf("error creating random layer file: %v", err) } layerURL, err := env.builder.BuildBlobURL(imageName, layerDigest) if err != nil { t.Fatalf("Error building blob URL") } uploadURLBase, _ := startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, layerDigest, uploadURLBase, layerFile) env.app.readOnly = true resp, err := httpDelete(layerURL) if err != nil { t.Fatalf("unexpected error deleting layer: %v", err) } checkResponse(t, "deleting layer in read-only mode", resp, http.StatusMethodNotAllowed) } func TestStartPushReadOnly(t *testing.T) { env := newTestEnv(t, true) env.app.readOnly = true imageName := "foo/bar" layerUploadURL, err := env.builder.BuildBlobUploadURL(imageName) if err != nil { t.Fatalf("unexpected error building layer upload url: %v", err) } resp, err := http.Post(layerUploadURL, "", nil) if err != nil { t.Fatalf("unexpected error starting layer push: %v", err) } defer resp.Body.Close() checkResponse(t, "starting push in read-only mode", resp, http.StatusMethodNotAllowed) } func httpDelete(url string) (*http.Response, error) { req, err := http.NewRequest("DELETE", url, nil) if err != nil { return nil, err } resp, err := http.DefaultClient.Do(req) if err != nil { return nil, err } // defer resp.Body.Close() return resp, err } type manifestArgs struct { imageName string signedManifest *schema1.SignedManifest dgst digest.Digest } func makeManifestArgs(t *testing.T) manifestArgs { args := manifestArgs{ imageName: "foo/bar", } return args } func TestManifestAPI(t *testing.T) { deleteEnabled := false env := newTestEnv(t, deleteEnabled) args := makeManifestArgs(t) testManifestAPI(t, env, args) deleteEnabled = true env = newTestEnv(t, deleteEnabled) args = makeManifestArgs(t) testManifestAPI(t, env, args) } func TestManifestDelete(t *testing.T) { deleteEnabled := true env := newTestEnv(t, deleteEnabled) args := makeManifestArgs(t) env, args = testManifestAPI(t, env, args) testManifestDelete(t, env, args) } func TestManifestDeleteDisabled(t *testing.T) { deleteEnabled := false env := newTestEnv(t, deleteEnabled) args := makeManifestArgs(t) testManifestDeleteDisabled(t, env, args) } func testManifestDeleteDisabled(t *testing.T, env *testEnv, args manifestArgs) *testEnv { imageName := args.imageName manifestURL, err := env.builder.BuildManifestURL(imageName, digest.DigestSha256EmptyTar) if err != nil { t.Fatalf("unexpected error getting manifest url: %v", err) } resp, err := httpDelete(manifestURL) if err != nil { t.Fatalf("unexpected error deleting manifest %v", err) } defer resp.Body.Close() checkResponse(t, "status of disabled delete of manifest", resp, http.StatusMethodNotAllowed) return nil } func testManifestAPI(t *testing.T, env *testEnv, args manifestArgs) (*testEnv, manifestArgs) { imageName := args.imageName tag := "thetag" manifestURL, err := env.builder.BuildManifestURL(imageName, tag) if err != nil { t.Fatalf("unexpected error getting manifest url: %v", err) } // ----------------------------- // Attempt to fetch the manifest resp, err := http.Get(manifestURL) if err != nil { t.Fatalf("unexpected error getting manifest: %v", err) } defer resp.Body.Close() checkResponse(t, "getting non-existent manifest", resp, http.StatusNotFound) checkBodyHasErrorCodes(t, "getting non-existent manifest", resp, v2.ErrorCodeManifestUnknown) tagsURL, err := env.builder.BuildTagsURL(imageName) if err != nil { t.Fatalf("unexpected error building tags url: %v", err) } resp, err = http.Get(tagsURL) if err != nil { t.Fatalf("unexpected error getting unknown tags: %v", err) } defer resp.Body.Close() // Check that we get an unknown repository error when asking for tags checkResponse(t, "getting unknown manifest tags", resp, http.StatusNotFound) checkBodyHasErrorCodes(t, "getting unknown manifest tags", resp, v2.ErrorCodeNameUnknown) // -------------------------------- // Attempt to push unsigned manifest with missing layers unsignedManifest := &schema1.Manifest{ Versioned: manifest.Versioned{ SchemaVersion: 1, }, Name: imageName, Tag: tag, FSLayers: []schema1.FSLayer{ { BlobSum: "asdf", }, { BlobSum: "qwer", }, }, History: []schema1.History{ { V1Compatibility: "", }, { V1Compatibility: "", }, }, } resp = putManifest(t, "putting unsigned manifest", manifestURL, unsignedManifest) defer resp.Body.Close() checkResponse(t, "putting unsigned manifest", resp, http.StatusBadRequest) _, p, counts := checkBodyHasErrorCodes(t, "getting unknown manifest tags", resp, v2.ErrorCodeManifestInvalid) expectedCounts := map[errcode.ErrorCode]int{ v2.ErrorCodeManifestInvalid: 1, } if !reflect.DeepEqual(counts, expectedCounts) { t.Fatalf("unexpected number of error codes encountered: %v\n!=\n%v\n---\n%s", counts, expectedCounts, string(p)) } // sign the manifest and still get some interesting errors. sm, err := schema1.Sign(unsignedManifest, env.pk) if err != nil { t.Fatalf("error signing manifest: %v", err) } resp = putManifest(t, "putting signed manifest with errors", manifestURL, sm) defer resp.Body.Close() checkResponse(t, "putting signed manifest with errors", resp, http.StatusBadRequest) _, p, counts = checkBodyHasErrorCodes(t, "putting signed manifest with errors", resp, v2.ErrorCodeManifestBlobUnknown, v2.ErrorCodeDigestInvalid) expectedCounts = map[errcode.ErrorCode]int{ v2.ErrorCodeManifestBlobUnknown: 2, v2.ErrorCodeDigestInvalid: 2, } if !reflect.DeepEqual(counts, expectedCounts) { t.Fatalf("unexpected number of error codes encountered: %v\n!=\n%v\n---\n%s", counts, expectedCounts, string(p)) } // TODO(stevvooe): Add a test case where we take a mostly valid registry, // tamper with the content and ensure that we get a unverified manifest // error. // Push 2 random layers expectedLayers := make(map[digest.Digest]io.ReadSeeker) for i := range unsignedManifest.FSLayers { rs, dgstStr, err := testutil.CreateRandomTarFile() if err != nil { t.Fatalf("error creating random layer %d: %v", i, err) } dgst := digest.Digest(dgstStr) expectedLayers[dgst] = rs unsignedManifest.FSLayers[i].BlobSum = dgst uploadURLBase, _ := startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, dgst, uploadURLBase, rs) } // ------------------- // Push the signed manifest with all layers pushed. signedManifest, err := schema1.Sign(unsignedManifest, env.pk) if err != nil { t.Fatalf("unexpected error signing manifest: %v", err) } dgst := digest.FromBytes(signedManifest.Canonical) args.signedManifest = signedManifest args.dgst = dgst manifestDigestURL, err := env.builder.BuildManifestURL(imageName, dgst.String()) checkErr(t, err, "building manifest url") resp = putManifest(t, "putting signed manifest no error", manifestURL, signedManifest) checkResponse(t, "putting signed manifest no error", resp, http.StatusCreated) checkHeaders(t, resp, http.Header{ "Location": []string{manifestDigestURL}, "Docker-Content-Digest": []string{dgst.String()}, }) // -------------------- // Push by digest -- should get same result resp = putManifest(t, "putting signed manifest", manifestDigestURL, signedManifest) checkResponse(t, "putting signed manifest", resp, http.StatusCreated) checkHeaders(t, resp, http.Header{ "Location": []string{manifestDigestURL}, "Docker-Content-Digest": []string{dgst.String()}, }) // ------------------ // Fetch by tag name resp, err = http.Get(manifestURL) if err != nil { t.Fatalf("unexpected error fetching manifest: %v", err) } defer resp.Body.Close() checkResponse(t, "fetching uploaded manifest", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Docker-Content-Digest": []string{dgst.String()}, "ETag": []string{fmt.Sprintf(`"%s"`, dgst)}, }) var fetchedManifest schema1.SignedManifest dec := json.NewDecoder(resp.Body) if err := dec.Decode(&fetchedManifest); err != nil { t.Fatalf("error decoding fetched manifest: %v", err) } if !bytes.Equal(fetchedManifest.Canonical, signedManifest.Canonical) { t.Fatalf("manifests do not match") } // --------------- // Fetch by digest resp, err = http.Get(manifestDigestURL) checkErr(t, err, "fetching manifest by digest") defer resp.Body.Close() checkResponse(t, "fetching uploaded manifest", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Docker-Content-Digest": []string{dgst.String()}, "ETag": []string{fmt.Sprintf(`"%s"`, dgst)}, }) var fetchedManifestByDigest schema1.SignedManifest dec = json.NewDecoder(resp.Body) if err := dec.Decode(&fetchedManifestByDigest); err != nil { t.Fatalf("error decoding fetched manifest: %v", err) } if !bytes.Equal(fetchedManifestByDigest.Canonical, signedManifest.Canonical) { t.Fatalf("manifests do not match") } // check signature was roundtripped signatures, err := fetchedManifestByDigest.Signatures() if err != nil { t.Fatal(err) } if len(signatures) != 1 { t.Fatalf("expected 1 signature from manifest, got: %d", len(signatures)) } // Re-sign, push and pull the same digest sm2, err := schema1.Sign(&fetchedManifestByDigest.Manifest, env.pk) if err != nil { t.Fatal(err) } resp = putManifest(t, "re-putting signed manifest", manifestDigestURL, sm2) checkResponse(t, "re-putting signed manifest", resp, http.StatusCreated) resp, err = http.Get(manifestDigestURL) checkErr(t, err, "re-fetching manifest by digest") defer resp.Body.Close() checkResponse(t, "re-fetching uploaded manifest", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Docker-Content-Digest": []string{dgst.String()}, "ETag": []string{fmt.Sprintf(`"%s"`, dgst)}, }) dec = json.NewDecoder(resp.Body) if err := dec.Decode(&fetchedManifestByDigest); err != nil { t.Fatalf("error decoding fetched manifest: %v", err) } // check two signatures were roundtripped signatures, err = fetchedManifestByDigest.Signatures() if err != nil { t.Fatal(err) } if len(signatures) != 2 { t.Fatalf("expected 2 signature from manifest, got: %d", len(signatures)) } // Get by name with etag, gives 304 etag := resp.Header.Get("Etag") req, err := http.NewRequest("GET", manifestURL, nil) if err != nil { t.Fatalf("Error constructing request: %s", err) } req.Header.Set("If-None-Match", etag) resp, err = http.DefaultClient.Do(req) if err != nil { t.Fatalf("Error constructing request: %s", err) } checkResponse(t, "fetching manifest by name with etag", resp, http.StatusNotModified) // Get by digest with etag, gives 304 req, err = http.NewRequest("GET", manifestDigestURL, nil) if err != nil { t.Fatalf("Error constructing request: %s", err) } req.Header.Set("If-None-Match", etag) resp, err = http.DefaultClient.Do(req) if err != nil { t.Fatalf("Error constructing request: %s", err) } checkResponse(t, "fetching manifest by dgst with etag", resp, http.StatusNotModified) // Ensure that the tag is listed. resp, err = http.Get(tagsURL) if err != nil { t.Fatalf("unexpected error getting unknown tags: %v", err) } defer resp.Body.Close() // Check that we get an unknown repository error when asking for tags checkResponse(t, "getting unknown manifest tags", resp, http.StatusOK) dec = json.NewDecoder(resp.Body) var tagsResponse tagsAPIResponse if err := dec.Decode(&tagsResponse); err != nil { t.Fatalf("unexpected error decoding error response: %v", err) } if tagsResponse.Name != imageName { t.Fatalf("tags name should match image name: %v != %v", tagsResponse.Name, imageName) } if len(tagsResponse.Tags) != 1 { t.Fatalf("expected some tags in response: %v", tagsResponse.Tags) } if tagsResponse.Tags[0] != tag { t.Fatalf("tag not as expected: %q != %q", tagsResponse.Tags[0], tag) } // Attempt to put a manifest with mismatching FSLayer and History array cardinalities unsignedManifest.History = append(unsignedManifest.History, schema1.History{ V1Compatibility: "", }) invalidSigned, err := schema1.Sign(unsignedManifest, env.pk) if err != nil { t.Fatalf("error signing manifest") } resp = putManifest(t, "putting invalid signed manifest", manifestDigestURL, invalidSigned) checkResponse(t, "putting invalid signed manifest", resp, http.StatusBadRequest) return env, args } func testManifestDelete(t *testing.T, env *testEnv, args manifestArgs) { imageName := args.imageName dgst := args.dgst signedManifest := args.signedManifest manifestDigestURL, err := env.builder.BuildManifestURL(imageName, dgst.String()) // --------------- // Delete by digest resp, err := httpDelete(manifestDigestURL) checkErr(t, err, "deleting manifest by digest") checkResponse(t, "deleting manifest", resp, http.StatusAccepted) checkHeaders(t, resp, http.Header{ "Content-Length": []string{"0"}, }) // --------------- // Attempt to fetch deleted manifest resp, err = http.Get(manifestDigestURL) checkErr(t, err, "fetching deleted manifest by digest") defer resp.Body.Close() checkResponse(t, "fetching deleted manifest", resp, http.StatusNotFound) // --------------- // Delete already deleted manifest by digest resp, err = httpDelete(manifestDigestURL) checkErr(t, err, "re-deleting manifest by digest") checkResponse(t, "re-deleting manifest", resp, http.StatusNotFound) // -------------------- // Re-upload manifest by digest resp = putManifest(t, "putting signed manifest", manifestDigestURL, signedManifest) checkResponse(t, "putting signed manifest", resp, http.StatusCreated) checkHeaders(t, resp, http.Header{ "Location": []string{manifestDigestURL}, "Docker-Content-Digest": []string{dgst.String()}, }) // --------------- // Attempt to fetch re-uploaded deleted digest resp, err = http.Get(manifestDigestURL) checkErr(t, err, "fetching re-uploaded manifest by digest") defer resp.Body.Close() checkResponse(t, "fetching re-uploaded manifest", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Docker-Content-Digest": []string{dgst.String()}, }) // --------------- // Attempt to delete an unknown manifest unknownDigest := "sha256:aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa" unknownManifestDigestURL, err := env.builder.BuildManifestURL(imageName, unknownDigest) checkErr(t, err, "building unknown manifest url") resp, err = httpDelete(unknownManifestDigestURL) checkErr(t, err, "delting unknown manifest by digest") checkResponse(t, "fetching deleted manifest", resp, http.StatusNotFound) } type testEnv struct { pk libtrust.PrivateKey ctx context.Context config configuration.Configuration app *App server *httptest.Server builder *v2.URLBuilder } func newTestEnvMirror(t *testing.T, deleteEnabled bool) *testEnv { config := configuration.Configuration{ Storage: configuration.Storage{ "inmemory": configuration.Parameters{}, "delete": configuration.Parameters{"enabled": deleteEnabled}, }, Proxy: configuration.Proxy{ RemoteURL: "http://example.com", }, } return newTestEnvWithConfig(t, &config) } func newTestEnv(t *testing.T, deleteEnabled bool) *testEnv { config := configuration.Configuration{ Storage: configuration.Storage{ "inmemory": configuration.Parameters{}, "delete": configuration.Parameters{"enabled": deleteEnabled}, }, } config.HTTP.Headers = headerConfig return newTestEnvWithConfig(t, &config) } func newTestEnvWithConfig(t *testing.T, config *configuration.Configuration) *testEnv { ctx := context.Background() app := NewApp(ctx, config) server := httptest.NewServer(handlers.CombinedLoggingHandler(os.Stderr, app)) builder, err := v2.NewURLBuilderFromString(server.URL + config.HTTP.Prefix) if err != nil { t.Fatalf("error creating url builder: %v", err) } pk, err := libtrust.GenerateECP256PrivateKey() if err != nil { t.Fatalf("unexpected error generating private key: %v", err) } return &testEnv{ pk: pk, ctx: ctx, config: *config, app: app, server: server, builder: builder, } } func putManifest(t *testing.T, msg, url string, v interface{}) *http.Response { var body []byte if sm, ok := v.(*schema1.SignedManifest); ok { _, pl, err := sm.Payload() if err != nil { t.Fatalf("error getting payload: %v", err) } body = pl } else { var err error body, err = json.MarshalIndent(v, "", " ") if err != nil { t.Fatalf("unexpected error marshaling %v: %v", v, err) } } req, err := http.NewRequest("PUT", url, bytes.NewReader(body)) if err != nil { t.Fatalf("error creating request for %s: %v", msg, err) } resp, err := http.DefaultClient.Do(req) if err != nil { t.Fatalf("error doing put request while %s: %v", msg, err) } return resp } func startPushLayer(t *testing.T, ub *v2.URLBuilder, name string) (location string, uuid string) { layerUploadURL, err := ub.BuildBlobUploadURL(name) if err != nil { t.Fatalf("unexpected error building layer upload url: %v", err) } resp, err := http.Post(layerUploadURL, "", nil) if err != nil { t.Fatalf("unexpected error starting layer push: %v", err) } defer resp.Body.Close() checkResponse(t, fmt.Sprintf("pushing starting layer push %v", name), resp, http.StatusAccepted) u, err := url.Parse(resp.Header.Get("Location")) if err != nil { t.Fatalf("error parsing location header: %v", err) } uuid = path.Base(u.Path) checkHeaders(t, resp, http.Header{ "Location": []string{"*"}, "Content-Length": []string{"0"}, "Docker-Upload-UUID": []string{uuid}, }) return resp.Header.Get("Location"), uuid } // doPushLayer pushes the layer content returning the url on success returning // the response. If you're only expecting a successful response, use pushLayer. func doPushLayer(t *testing.T, ub *v2.URLBuilder, name string, dgst digest.Digest, uploadURLBase string, body io.Reader) (*http.Response, error) { u, err := url.Parse(uploadURLBase) if err != nil { t.Fatalf("unexpected error parsing pushLayer url: %v", err) } u.RawQuery = url.Values{ "_state": u.Query()["_state"], "digest": []string{dgst.String()}, }.Encode() uploadURL := u.String() // Just do a monolithic upload req, err := http.NewRequest("PUT", uploadURL, body) if err != nil { t.Fatalf("unexpected error creating new request: %v", err) } return http.DefaultClient.Do(req) } // pushLayer pushes the layer content returning the url on success. func pushLayer(t *testing.T, ub *v2.URLBuilder, name string, dgst digest.Digest, uploadURLBase string, body io.Reader) string { digester := digest.Canonical.New() resp, err := doPushLayer(t, ub, name, dgst, uploadURLBase, io.TeeReader(body, digester.Hash())) if err != nil { t.Fatalf("unexpected error doing push layer request: %v", err) } defer resp.Body.Close() checkResponse(t, "putting monolithic chunk", resp, http.StatusCreated) if err != nil { t.Fatalf("error generating sha256 digest of body") } sha256Dgst := digester.Digest() expectedLayerURL, err := ub.BuildBlobURL(name, sha256Dgst) if err != nil { t.Fatalf("error building expected layer url: %v", err) } checkHeaders(t, resp, http.Header{ "Location": []string{expectedLayerURL}, "Content-Length": []string{"0"}, "Docker-Content-Digest": []string{sha256Dgst.String()}, }) return resp.Header.Get("Location") } func finishUpload(t *testing.T, ub *v2.URLBuilder, name string, uploadURLBase string, dgst digest.Digest) string { resp, err := doPushLayer(t, ub, name, dgst, uploadURLBase, nil) if err != nil { t.Fatalf("unexpected error doing push layer request: %v", err) } defer resp.Body.Close() checkResponse(t, "putting monolithic chunk", resp, http.StatusCreated) expectedLayerURL, err := ub.BuildBlobURL(name, dgst) if err != nil { t.Fatalf("error building expected layer url: %v", err) } checkHeaders(t, resp, http.Header{ "Location": []string{expectedLayerURL}, "Content-Length": []string{"0"}, "Docker-Content-Digest": []string{dgst.String()}, }) return resp.Header.Get("Location") } func doPushChunk(t *testing.T, uploadURLBase string, body io.Reader) (*http.Response, digest.Digest, error) { u, err := url.Parse(uploadURLBase) if err != nil { t.Fatalf("unexpected error parsing pushLayer url: %v", err) } u.RawQuery = url.Values{ "_state": u.Query()["_state"], }.Encode() uploadURL := u.String() digester := digest.Canonical.New() req, err := http.NewRequest("PATCH", uploadURL, io.TeeReader(body, digester.Hash())) if err != nil { t.Fatalf("unexpected error creating new request: %v", err) } req.Header.Set("Content-Type", "application/octet-stream") resp, err := http.DefaultClient.Do(req) return resp, digester.Digest(), err } func pushChunk(t *testing.T, ub *v2.URLBuilder, name string, uploadURLBase string, body io.Reader, length int64) (string, digest.Digest) { resp, dgst, err := doPushChunk(t, uploadURLBase, body) if err != nil { t.Fatalf("unexpected error doing push layer request: %v", err) } defer resp.Body.Close() checkResponse(t, "putting chunk", resp, http.StatusAccepted) if err != nil { t.Fatalf("error generating sha256 digest of body") } checkHeaders(t, resp, http.Header{ "Range": []string{fmt.Sprintf("0-%d", length-1)}, "Content-Length": []string{"0"}, }) return resp.Header.Get("Location"), dgst } func checkResponse(t *testing.T, msg string, resp *http.Response, expectedStatus int) { if resp.StatusCode != expectedStatus { t.Logf("unexpected status %s: %v != %v", msg, resp.StatusCode, expectedStatus) maybeDumpResponse(t, resp) t.FailNow() } // We expect the headers included in the configuration, unless the // status code is 405 (Method Not Allowed), which means the handler // doesn't even get called. if resp.StatusCode != 405 && !reflect.DeepEqual(resp.Header["X-Content-Type-Options"], []string{"nosniff"}) { t.Logf("missing or incorrect header X-Content-Type-Options %s", msg) maybeDumpResponse(t, resp) t.FailNow() } } // checkBodyHasErrorCodes ensures the body is an error body and has the // expected error codes, returning the error structure, the json slice and a // count of the errors by code. func checkBodyHasErrorCodes(t *testing.T, msg string, resp *http.Response, errorCodes ...errcode.ErrorCode) (errcode.Errors, []byte, map[errcode.ErrorCode]int) { p, err := ioutil.ReadAll(resp.Body) if err != nil { t.Fatalf("unexpected error reading body %s: %v", msg, err) } var errs errcode.Errors if err := json.Unmarshal(p, &errs); err != nil { t.Fatalf("unexpected error decoding error response: %v", err) } if len(errs) == 0 { t.Fatalf("expected errors in response") } // TODO(stevvooe): Shoot. The error setup is not working out. The content- // type headers are being set after writing the status code. // if resp.Header.Get("Content-Type") != "application/json; charset=utf-8" { // t.Fatalf("unexpected content type: %v != 'application/json'", // resp.Header.Get("Content-Type")) // } expected := map[errcode.ErrorCode]struct{}{} counts := map[errcode.ErrorCode]int{} // Initialize map with zeros for expected for _, code := range errorCodes { expected[code] = struct{}{} counts[code] = 0 } for _, e := range errs { err, ok := e.(errcode.ErrorCoder) if !ok { t.Fatalf("not an ErrorCoder: %#v", e) } if _, ok := expected[err.ErrorCode()]; !ok { t.Fatalf("unexpected error code %v encountered during %s: %s ", err.ErrorCode(), msg, string(p)) } counts[err.ErrorCode()]++ } // Ensure that counts of expected errors were all non-zero for code := range expected { if counts[code] == 0 { t.Fatalf("expected error code %v not encounterd during %s: %s", code, msg, string(p)) } } return errs, p, counts } func maybeDumpResponse(t *testing.T, resp *http.Response) { if d, err := httputil.DumpResponse(resp, true); err != nil { t.Logf("error dumping response: %v", err) } else { t.Logf("response:\n%s", string(d)) } } // matchHeaders checks that the response has at least the headers. If not, the // test will fail. If a passed in header value is "*", any non-zero value will // suffice as a match. func checkHeaders(t *testing.T, resp *http.Response, headers http.Header) { for k, vs := range headers { if resp.Header.Get(k) == "" { t.Fatalf("response missing header %q", k) } for _, v := range vs { if v == "*" { // Just ensure there is some value. if len(resp.Header[http.CanonicalHeaderKey(k)]) > 0 { continue } } for _, hv := range resp.Header[http.CanonicalHeaderKey(k)] { if hv != v { t.Fatalf("%+v %v header value not matched in response: %q != %q", resp.Header, k, hv, v) } } } } } func checkErr(t *testing.T, err error, msg string) { if err != nil { t.Fatalf("unexpected error %s: %v", msg, err) } } func createRepository(env *testEnv, t *testing.T, imageName string, tag string) digest.Digest { unsignedManifest := &schema1.Manifest{ Versioned: manifest.Versioned{ SchemaVersion: 1, }, Name: imageName, Tag: tag, FSLayers: []schema1.FSLayer{ { BlobSum: "asdf", }, }, History: []schema1.History{ { V1Compatibility: "", }, }, } // Push 2 random layers expectedLayers := make(map[digest.Digest]io.ReadSeeker) for i := range unsignedManifest.FSLayers { rs, dgstStr, err := testutil.CreateRandomTarFile() if err != nil { t.Fatalf("error creating random layer %d: %v", i, err) } dgst := digest.Digest(dgstStr) expectedLayers[dgst] = rs unsignedManifest.FSLayers[i].BlobSum = dgst uploadURLBase, _ := startPushLayer(t, env.builder, imageName) pushLayer(t, env.builder, imageName, dgst, uploadURLBase, rs) } signedManifest, err := schema1.Sign(unsignedManifest, env.pk) if err != nil { t.Fatalf("unexpected error signing manifest: %v", err) } dgst := digest.FromBytes(signedManifest.Canonical) // Create this repository by tag to ensure the tag mapping is made in the registry manifestDigestURL, err := env.builder.BuildManifestURL(imageName, tag) checkErr(t, err, "building manifest url") location, err := env.builder.BuildManifestURL(imageName, dgst.String()) checkErr(t, err, "building location URL") resp := putManifest(t, "putting signed manifest", manifestDigestURL, signedManifest) checkResponse(t, "putting signed manifest", resp, http.StatusCreated) checkHeaders(t, resp, http.Header{ "Location": []string{location}, "Docker-Content-Digest": []string{dgst.String()}, }) return dgst } // Test mutation operations on a registry configured as a cache. Ensure that they return // appropriate errors. func TestRegistryAsCacheMutationAPIs(t *testing.T) { deleteEnabled := true env := newTestEnvMirror(t, deleteEnabled) imageName := "foo/bar" tag := "latest" manifestURL, err := env.builder.BuildManifestURL(imageName, tag) if err != nil { t.Fatalf("unexpected error building base url: %v", err) } // Manifest upload m := &schema1.Manifest{ Versioned: manifest.Versioned{ SchemaVersion: 1, }, Name: imageName, Tag: tag, FSLayers: []schema1.FSLayer{}, History: []schema1.History{}, } sm, err := schema1.Sign(m, env.pk) if err != nil { t.Fatalf("error signing manifest: %v", err) } resp := putManifest(t, "putting unsigned manifest", manifestURL, sm) checkResponse(t, "putting signed manifest to cache", resp, errcode.ErrorCodeUnsupported.Descriptor().HTTPStatusCode) // Manifest Delete resp, err = httpDelete(manifestURL) checkResponse(t, "deleting signed manifest from cache", resp, errcode.ErrorCodeUnsupported.Descriptor().HTTPStatusCode) // Blob upload initialization layerUploadURL, err := env.builder.BuildBlobUploadURL(imageName) if err != nil { t.Fatalf("unexpected error building layer upload url: %v", err) } resp, err = http.Post(layerUploadURL, "", nil) if err != nil { t.Fatalf("unexpected error starting layer push: %v", err) } defer resp.Body.Close() checkResponse(t, fmt.Sprintf("starting layer push to cache %v", imageName), resp, errcode.ErrorCodeUnsupported.Descriptor().HTTPStatusCode) // Blob Delete blobURL, err := env.builder.BuildBlobURL(imageName, digest.DigestSha256EmptyTar) resp, err = httpDelete(blobURL) checkResponse(t, "deleting blob from cache", resp, errcode.ErrorCodeUnsupported.Descriptor().HTTPStatusCode) } // TestCheckContextNotifier makes sure the API endpoints get a ResponseWriter // that implements http.ContextNotifier. func TestCheckContextNotifier(t *testing.T) { env := newTestEnv(t, false) // Register a new endpoint for testing env.app.router.Handle("/unittest/{name}/", env.app.dispatcher(func(ctx *Context, r *http.Request) http.Handler { return handlers.MethodHandler{ "GET": http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) { if _, ok := w.(http.CloseNotifier); !ok { t.Fatal("could not cast ResponseWriter to CloseNotifier") } w.WriteHeader(200) }), } })) resp, err := http.Get(env.server.URL + "/unittest/reponame/") if err != nil { t.Fatalf("unexpected error issuing request: %v", err) } defer resp.Body.Close() if resp.StatusCode != 200 { t.Fatalf("wrong status code - expected 200, got %d", resp.StatusCode) } } func TestProxyManifestGetByTag(t *testing.T) { truthConfig := configuration.Configuration{ Storage: configuration.Storage{ "inmemory": configuration.Parameters{}, }, } truthConfig.HTTP.Headers = headerConfig imageName := "foo/bar" tag := "latest" truthEnv := newTestEnvWithConfig(t, &truthConfig) // create a repository in the truth registry dgst := createRepository(truthEnv, t, imageName, tag) proxyConfig := configuration.Configuration{ Storage: configuration.Storage{ "inmemory": configuration.Parameters{}, }, Proxy: configuration.Proxy{ RemoteURL: truthEnv.server.URL, }, } proxyConfig.HTTP.Headers = headerConfig proxyEnv := newTestEnvWithConfig(t, &proxyConfig) manifestDigestURL, err := proxyEnv.builder.BuildManifestURL(imageName, dgst.String()) checkErr(t, err, "building manifest url") resp, err := http.Get(manifestDigestURL) checkErr(t, err, "fetching manifest from proxy by digest") defer resp.Body.Close() manifestTagURL, err := proxyEnv.builder.BuildManifestURL(imageName, tag) checkErr(t, err, "building manifest url") resp, err = http.Get(manifestTagURL) checkErr(t, err, "fetching manifest from proxy by tag") defer resp.Body.Close() checkResponse(t, "fetching manifest from proxy by tag", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Docker-Content-Digest": []string{dgst.String()}, }) // Create another manifest in the remote with the same image/tag pair newDigest := createRepository(truthEnv, t, imageName, tag) if dgst == newDigest { t.Fatalf("non-random test data") } // fetch it with the same proxy URL as before. Ensure the updated content is at the same tag resp, err = http.Get(manifestTagURL) checkErr(t, err, "fetching manifest from proxy by tag") defer resp.Body.Close() checkResponse(t, "fetching manifest from proxy by tag", resp, http.StatusOK) checkHeaders(t, resp, http.Header{ "Docker-Content-Digest": []string{newDigest.String()}, }) }