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moby--moby/integration-cli/docker_cli_by_digest_test.go
Vincent Demeester 636d6ee57c
Do not fail in TearDown if container not found when removing
If the container is not found when removing, it means it's already not
there anymore, so it's safe to ignore. This should reduce a bit some
`TearDown` flakyness..

Signed-off-by: Vincent Demeester <vincent@sbr.pm>
2017-01-02 22:14:24 +01:00

693 lines
27 KiB
Go

package main
import (
"encoding/json"
"fmt"
"os"
"path/filepath"
"regexp"
"strings"
"github.com/docker/distribution/digest"
"github.com/docker/distribution/manifest/schema1"
"github.com/docker/distribution/manifest/schema2"
"github.com/docker/docker/api/types"
"github.com/docker/docker/integration-cli/checker"
"github.com/docker/docker/pkg/stringutils"
"github.com/go-check/check"
)
var (
remoteRepoName = "dockercli/busybox-by-dgst"
repoName = fmt.Sprintf("%s/%s", privateRegistryURL, remoteRepoName)
pushDigestRegex = regexp.MustCompile("[\\S]+: digest: ([\\S]+) size: [0-9]+")
digestRegex = regexp.MustCompile("Digest: ([\\S]+)")
)
func setupImage(c *check.C) (digest.Digest, error) {
return setupImageWithTag(c, "latest")
}
func setupImageWithTag(c *check.C, tag string) (digest.Digest, error) {
containerName := "busyboxbydigest"
dockerCmd(c, "run", "-e", "digest=1", "--name", containerName, "busybox")
// tag the image to upload it to the private registry
repoAndTag := repoName + ":" + tag
out, _, err := dockerCmdWithError("commit", containerName, repoAndTag)
c.Assert(err, checker.IsNil, check.Commentf("image tagging failed: %s", out))
// delete the container as we don't need it any more
err = deleteContainer(false, containerName)
c.Assert(err, checker.IsNil)
// push the image
out, _, err = dockerCmdWithError("push", repoAndTag)
c.Assert(err, checker.IsNil, check.Commentf("pushing the image to the private registry has failed: %s", out))
// delete our local repo that we previously tagged
rmiout, _, err := dockerCmdWithError("rmi", repoAndTag)
c.Assert(err, checker.IsNil, check.Commentf("error deleting images prior to real test: %s", rmiout))
matches := pushDigestRegex.FindStringSubmatch(out)
c.Assert(matches, checker.HasLen, 2, check.Commentf("unable to parse digest from push output: %s", out))
pushDigest := matches[1]
return digest.Digest(pushDigest), nil
}
func testPullByTagDisplaysDigest(c *check.C) {
testRequires(c, DaemonIsLinux)
pushDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
// pull from the registry using the tag
out, _ := dockerCmd(c, "pull", repoName)
// the pull output includes "Digest: <digest>", so find that
matches := digestRegex.FindStringSubmatch(out)
c.Assert(matches, checker.HasLen, 2, check.Commentf("unable to parse digest from pull output: %s", out))
pullDigest := matches[1]
// make sure the pushed and pull digests match
c.Assert(pushDigest.String(), checker.Equals, pullDigest)
}
func (s *DockerRegistrySuite) TestPullByTagDisplaysDigest(c *check.C) {
testPullByTagDisplaysDigest(c)
}
func (s *DockerSchema1RegistrySuite) TestPullByTagDisplaysDigest(c *check.C) {
testPullByTagDisplaysDigest(c)
}
func testPullByDigest(c *check.C) {
testRequires(c, DaemonIsLinux)
pushDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
// pull from the registry using the <name>@<digest> reference
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
out, _ := dockerCmd(c, "pull", imageReference)
// the pull output includes "Digest: <digest>", so find that
matches := digestRegex.FindStringSubmatch(out)
c.Assert(matches, checker.HasLen, 2, check.Commentf("unable to parse digest from pull output: %s", out))
pullDigest := matches[1]
// make sure the pushed and pull digests match
c.Assert(pushDigest.String(), checker.Equals, pullDigest)
}
func (s *DockerRegistrySuite) TestPullByDigest(c *check.C) {
testPullByDigest(c)
}
func (s *DockerSchema1RegistrySuite) TestPullByDigest(c *check.C) {
testPullByDigest(c)
}
func testPullByDigestNoFallback(c *check.C) {
testRequires(c, DaemonIsLinux)
// pull from the registry using the <name>@<digest> reference
imageReference := fmt.Sprintf("%s@sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", repoName)
out, _, err := dockerCmdWithError("pull", imageReference)
c.Assert(err, checker.NotNil, check.Commentf("expected non-zero exit status and correct error message when pulling non-existing image"))
c.Assert(out, checker.Contains, fmt.Sprintf("manifest for %s not found", imageReference), check.Commentf("expected non-zero exit status and correct error message when pulling non-existing image"))
}
func (s *DockerRegistrySuite) TestPullByDigestNoFallback(c *check.C) {
testPullByDigestNoFallback(c)
}
func (s *DockerSchema1RegistrySuite) TestPullByDigestNoFallback(c *check.C) {
testPullByDigestNoFallback(c)
}
func (s *DockerRegistrySuite) TestCreateByDigest(c *check.C) {
pushDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
containerName := "createByDigest"
dockerCmd(c, "create", "--name", containerName, imageReference)
res := inspectField(c, containerName, "Config.Image")
c.Assert(res, checker.Equals, imageReference)
}
func (s *DockerRegistrySuite) TestRunByDigest(c *check.C) {
pushDigest, err := setupImage(c)
c.Assert(err, checker.IsNil)
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
containerName := "runByDigest"
out, _ := dockerCmd(c, "run", "--name", containerName, imageReference, "sh", "-c", "echo found=$digest")
foundRegex := regexp.MustCompile("found=([^\n]+)")
matches := foundRegex.FindStringSubmatch(out)
c.Assert(matches, checker.HasLen, 2, check.Commentf("unable to parse digest from pull output: %s", out))
c.Assert(matches[1], checker.Equals, "1", check.Commentf("Expected %q, got %q", "1", matches[1]))
res := inspectField(c, containerName, "Config.Image")
c.Assert(res, checker.Equals, imageReference)
}
func (s *DockerRegistrySuite) TestRemoveImageByDigest(c *check.C) {
digest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
dockerCmd(c, "pull", imageReference)
// make sure inspect runs ok
inspectField(c, imageReference, "Id")
// do the delete
err = deleteImages(imageReference)
c.Assert(err, checker.IsNil, check.Commentf("unexpected error deleting image"))
// try to inspect again - it should error this time
_, err = inspectFieldWithError(imageReference, "Id")
//unexpected nil err trying to inspect what should be a non-existent image
c.Assert(err, checker.NotNil)
c.Assert(err.Error(), checker.Contains, "No such object")
}
func (s *DockerRegistrySuite) TestBuildByDigest(c *check.C) {
digest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
dockerCmd(c, "pull", imageReference)
// get the image id
imageID := inspectField(c, imageReference, "Id")
// do the build
name := "buildbydigest"
_, err = buildImage(name, fmt.Sprintf(
`FROM %s
CMD ["/bin/echo", "Hello World"]`, imageReference),
true)
c.Assert(err, checker.IsNil)
// get the build's image id
res := inspectField(c, name, "Config.Image")
// make sure they match
c.Assert(res, checker.Equals, imageID)
}
func (s *DockerRegistrySuite) TestTagByDigest(c *check.C) {
digest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
dockerCmd(c, "pull", imageReference)
// tag it
tag := "tagbydigest"
dockerCmd(c, "tag", imageReference, tag)
expectedID := inspectField(c, imageReference, "Id")
tagID := inspectField(c, tag, "Id")
c.Assert(tagID, checker.Equals, expectedID)
}
func (s *DockerRegistrySuite) TestListImagesWithoutDigests(c *check.C) {
digest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
dockerCmd(c, "pull", imageReference)
out, _ := dockerCmd(c, "images")
c.Assert(out, checker.Not(checker.Contains), "DIGEST", check.Commentf("list output should not have contained DIGEST header"))
}
func (s *DockerRegistrySuite) TestListImagesWithDigests(c *check.C) {
// setup image1
digest1, err := setupImageWithTag(c, "tag1")
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference1 := fmt.Sprintf("%s@%s", repoName, digest1)
c.Logf("imageReference1 = %s", imageReference1)
// pull image1 by digest
dockerCmd(c, "pull", imageReference1)
// list images
out, _ := dockerCmd(c, "images", "--digests")
// make sure repo shown, tag=<none>, digest = $digest1
re1 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest1.String() + `\s`)
c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
// setup image2
digest2, err := setupImageWithTag(c, "tag2")
//error setting up image
c.Assert(err, checker.IsNil)
imageReference2 := fmt.Sprintf("%s@%s", repoName, digest2)
c.Logf("imageReference2 = %s", imageReference2)
// pull image1 by digest
dockerCmd(c, "pull", imageReference1)
// pull image2 by digest
dockerCmd(c, "pull", imageReference2)
// list images
out, _ = dockerCmd(c, "images", "--digests")
// make sure repo shown, tag=<none>, digest = $digest1
c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
// make sure repo shown, tag=<none>, digest = $digest2
re2 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest2.String() + `\s`)
c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
// pull tag1
dockerCmd(c, "pull", repoName+":tag1")
// list images
out, _ = dockerCmd(c, "images", "--digests")
// make sure image 1 has repo, tag, <none> AND repo, <none>, digest
reWithDigest1 := regexp.MustCompile(`\s*` + repoName + `\s*tag1\s*` + digest1.String() + `\s`)
c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
// make sure image 2 has repo, <none>, digest
c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
// pull tag 2
dockerCmd(c, "pull", repoName+":tag2")
// list images
out, _ = dockerCmd(c, "images", "--digests")
// make sure image 1 has repo, tag, digest
c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
// make sure image 2 has repo, tag, digest
reWithDigest2 := regexp.MustCompile(`\s*` + repoName + `\s*tag2\s*` + digest2.String() + `\s`)
c.Assert(reWithDigest2.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest2.String(), out))
// list images
out, _ = dockerCmd(c, "images", "--digests")
// make sure image 1 has repo, tag, digest
c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
// make sure image 2 has repo, tag, digest
c.Assert(reWithDigest2.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest2.String(), out))
// make sure busybox has tag, but not digest
busyboxRe := regexp.MustCompile(`\s*busybox\s*latest\s*<none>\s`)
c.Assert(busyboxRe.MatchString(out), checker.True, check.Commentf("expected %q: %s", busyboxRe.String(), out))
}
func (s *DockerRegistrySuite) TestListDanglingImagesWithDigests(c *check.C) {
// setup image1
digest1, err := setupImageWithTag(c, "dangle1")
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference1 := fmt.Sprintf("%s@%s", repoName, digest1)
c.Logf("imageReference1 = %s", imageReference1)
// pull image1 by digest
dockerCmd(c, "pull", imageReference1)
// list images
out, _ := dockerCmd(c, "images", "--digests")
// make sure repo shown, tag=<none>, digest = $digest1
re1 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest1.String() + `\s`)
c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
// setup image2
digest2, err := setupImageWithTag(c, "dangle2")
//error setting up image
c.Assert(err, checker.IsNil)
imageReference2 := fmt.Sprintf("%s@%s", repoName, digest2)
c.Logf("imageReference2 = %s", imageReference2)
// pull image1 by digest
dockerCmd(c, "pull", imageReference1)
// pull image2 by digest
dockerCmd(c, "pull", imageReference2)
// list images
out, _ = dockerCmd(c, "images", "--digests", "--filter=dangling=true")
// make sure repo shown, tag=<none>, digest = $digest1
c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
// make sure repo shown, tag=<none>, digest = $digest2
re2 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest2.String() + `\s`)
c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
// pull dangle1 tag
dockerCmd(c, "pull", repoName+":dangle1")
// list images
out, _ = dockerCmd(c, "images", "--digests", "--filter=dangling=true")
// make sure image 1 has repo, tag, <none> AND repo, <none>, digest
reWithDigest1 := regexp.MustCompile(`\s*` + repoName + `\s*dangle1\s*` + digest1.String() + `\s`)
c.Assert(reWithDigest1.MatchString(out), checker.False, check.Commentf("unexpected %q: %s", reWithDigest1.String(), out))
// make sure image 2 has repo, <none>, digest
c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
// pull dangle2 tag
dockerCmd(c, "pull", repoName+":dangle2")
// list images, show tagged images
out, _ = dockerCmd(c, "images", "--digests")
// make sure image 1 has repo, tag, digest
c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
// make sure image 2 has repo, tag, digest
reWithDigest2 := regexp.MustCompile(`\s*` + repoName + `\s*dangle2\s*` + digest2.String() + `\s`)
c.Assert(reWithDigest2.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest2.String(), out))
// list images, no longer dangling, should not match
out, _ = dockerCmd(c, "images", "--digests", "--filter=dangling=true")
// make sure image 1 has repo, tag, digest
c.Assert(reWithDigest1.MatchString(out), checker.False, check.Commentf("unexpected %q: %s", reWithDigest1.String(), out))
// make sure image 2 has repo, tag, digest
c.Assert(reWithDigest2.MatchString(out), checker.False, check.Commentf("unexpected %q: %s", reWithDigest2.String(), out))
}
func (s *DockerRegistrySuite) TestInspectImageWithDigests(c *check.C) {
digest, err := setupImage(c)
c.Assert(err, check.IsNil, check.Commentf("error setting up image"))
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
dockerCmd(c, "pull", imageReference)
out, _ := dockerCmd(c, "inspect", imageReference)
var imageJSON []types.ImageInspect
err = json.Unmarshal([]byte(out), &imageJSON)
c.Assert(err, checker.IsNil)
c.Assert(imageJSON, checker.HasLen, 1)
c.Assert(imageJSON[0].RepoDigests, checker.HasLen, 1)
c.Assert(stringutils.InSlice(imageJSON[0].RepoDigests, imageReference), checker.Equals, true)
}
func (s *DockerRegistrySuite) TestPsListContainersFilterAncestorImageByDigest(c *check.C) {
digest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
imageReference := fmt.Sprintf("%s@%s", repoName, digest)
// pull from the registry using the <name>@<digest> reference
dockerCmd(c, "pull", imageReference)
// build an image from it
imageName1 := "images_ps_filter_test"
_, err = buildImage(imageName1, fmt.Sprintf(
`FROM %s
LABEL match me 1`, imageReference), true)
c.Assert(err, checker.IsNil)
// run a container based on that
dockerCmd(c, "run", "--name=test1", imageReference, "echo", "hello")
expectedID, err := getIDByName("test1")
c.Assert(err, check.IsNil)
// run a container based on the a descendant of that too
dockerCmd(c, "run", "--name=test2", imageName1, "echo", "hello")
expectedID1, err := getIDByName("test2")
c.Assert(err, check.IsNil)
expectedIDs := []string{expectedID, expectedID1}
// Invalid imageReference
out, _ := dockerCmd(c, "ps", "-a", "-q", "--no-trunc", fmt.Sprintf("--filter=ancestor=busybox@%s", digest))
// Filter container for ancestor filter should be empty
c.Assert(strings.TrimSpace(out), checker.Equals, "")
// Valid imageReference
out, _ = dockerCmd(c, "ps", "-a", "-q", "--no-trunc", "--filter=ancestor="+imageReference)
checkPsAncestorFilterOutput(c, out, imageReference, expectedIDs)
}
func (s *DockerRegistrySuite) TestDeleteImageByIDOnlyPulledByDigest(c *check.C) {
pushDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
// pull from the registry using the <name>@<digest> reference
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
dockerCmd(c, "pull", imageReference)
// just in case...
dockerCmd(c, "tag", imageReference, repoName+":sometag")
imageID := inspectField(c, imageReference, "Id")
dockerCmd(c, "rmi", imageID)
_, err = inspectFieldWithError(imageID, "Id")
c.Assert(err, checker.NotNil, check.Commentf("image should have been deleted"))
}
func (s *DockerRegistrySuite) TestDeleteImageWithDigestAndTag(c *check.C) {
pushDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
// pull from the registry using the <name>@<digest> reference
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
dockerCmd(c, "pull", imageReference)
imageID := inspectField(c, imageReference, "Id")
repoTag := repoName + ":sometag"
repoTag2 := repoName + ":othertag"
dockerCmd(c, "tag", imageReference, repoTag)
dockerCmd(c, "tag", imageReference, repoTag2)
dockerCmd(c, "rmi", repoTag2)
// rmi should have deleted only repoTag2, because there's another tag
inspectField(c, repoTag, "Id")
dockerCmd(c, "rmi", repoTag)
// rmi should have deleted the tag, the digest reference, and the image itself
_, err = inspectFieldWithError(imageID, "Id")
c.Assert(err, checker.NotNil, check.Commentf("image should have been deleted"))
}
func (s *DockerRegistrySuite) TestDeleteImageWithDigestAndMultiRepoTag(c *check.C) {
pushDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
repo2 := fmt.Sprintf("%s/%s", repoName, "repo2")
// pull from the registry using the <name>@<digest> reference
imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
dockerCmd(c, "pull", imageReference)
imageID := inspectField(c, imageReference, "Id")
repoTag := repoName + ":sometag"
repoTag2 := repo2 + ":othertag"
dockerCmd(c, "tag", imageReference, repoTag)
dockerCmd(c, "tag", imageReference, repoTag2)
dockerCmd(c, "rmi", repoTag)
// rmi should have deleted repoTag and image reference, but left repoTag2
inspectField(c, repoTag2, "Id")
_, err = inspectFieldWithError(imageReference, "Id")
c.Assert(err, checker.NotNil, check.Commentf("image digest reference should have been removed"))
_, err = inspectFieldWithError(repoTag, "Id")
c.Assert(err, checker.NotNil, check.Commentf("image tag reference should have been removed"))
dockerCmd(c, "rmi", repoTag2)
// rmi should have deleted the tag, the digest reference, and the image itself
_, err = inspectFieldWithError(imageID, "Id")
c.Assert(err, checker.NotNil, check.Commentf("image should have been deleted"))
}
// TestPullFailsWithAlteredManifest tests that a `docker pull` fails when
// we have modified a manifest blob and its digest cannot be verified.
// This is the schema2 version of the test.
func (s *DockerRegistrySuite) TestPullFailsWithAlteredManifest(c *check.C) {
testRequires(c, DaemonIsLinux)
manifestDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
// Load the target manifest blob.
manifestBlob := s.reg.ReadBlobContents(c, manifestDigest)
var imgManifest schema2.Manifest
err = json.Unmarshal(manifestBlob, &imgManifest)
c.Assert(err, checker.IsNil, check.Commentf("unable to decode image manifest from blob"))
// Change a layer in the manifest.
imgManifest.Layers[0].Digest = digest.Digest("sha256:0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef")
// Move the existing data file aside, so that we can replace it with a
// malicious blob of data. NOTE: we defer the returned undo func.
undo := s.reg.TempMoveBlobData(c, manifestDigest)
defer undo()
alteredManifestBlob, err := json.MarshalIndent(imgManifest, "", " ")
c.Assert(err, checker.IsNil, check.Commentf("unable to encode altered image manifest to JSON"))
s.reg.WriteBlobContents(c, manifestDigest, alteredManifestBlob)
// Now try pulling that image by digest. We should get an error about
// digest verification for the manifest digest.
// Pull from the registry using the <name>@<digest> reference.
imageReference := fmt.Sprintf("%s@%s", repoName, manifestDigest)
out, exitStatus, _ := dockerCmdWithError("pull", imageReference)
c.Assert(exitStatus, checker.Not(check.Equals), 0)
expectedErrorMsg := fmt.Sprintf("manifest verification failed for digest %s", manifestDigest)
c.Assert(out, checker.Contains, expectedErrorMsg)
}
// TestPullFailsWithAlteredManifest tests that a `docker pull` fails when
// we have modified a manifest blob and its digest cannot be verified.
// This is the schema1 version of the test.
func (s *DockerSchema1RegistrySuite) TestPullFailsWithAlteredManifest(c *check.C) {
testRequires(c, DaemonIsLinux)
manifestDigest, err := setupImage(c)
c.Assert(err, checker.IsNil, check.Commentf("error setting up image"))
// Load the target manifest blob.
manifestBlob := s.reg.ReadBlobContents(c, manifestDigest)
var imgManifest schema1.Manifest
err = json.Unmarshal(manifestBlob, &imgManifest)
c.Assert(err, checker.IsNil, check.Commentf("unable to decode image manifest from blob"))
// Change a layer in the manifest.
imgManifest.FSLayers[0] = schema1.FSLayer{
BlobSum: digest.Digest("sha256:0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"),
}
// Move the existing data file aside, so that we can replace it with a
// malicious blob of data. NOTE: we defer the returned undo func.
undo := s.reg.TempMoveBlobData(c, manifestDigest)
defer undo()
alteredManifestBlob, err := json.MarshalIndent(imgManifest, "", " ")
c.Assert(err, checker.IsNil, check.Commentf("unable to encode altered image manifest to JSON"))
s.reg.WriteBlobContents(c, manifestDigest, alteredManifestBlob)
// Now try pulling that image by digest. We should get an error about
// digest verification for the manifest digest.
// Pull from the registry using the <name>@<digest> reference.
imageReference := fmt.Sprintf("%s@%s", repoName, manifestDigest)
out, exitStatus, _ := dockerCmdWithError("pull", imageReference)
c.Assert(exitStatus, checker.Not(check.Equals), 0)
expectedErrorMsg := fmt.Sprintf("image verification failed for digest %s", manifestDigest)
c.Assert(out, checker.Contains, expectedErrorMsg)
}
// TestPullFailsWithAlteredLayer tests that a `docker pull` fails when
// we have modified a layer blob and its digest cannot be verified.
// This is the schema2 version of the test.
func (s *DockerRegistrySuite) TestPullFailsWithAlteredLayer(c *check.C) {
testRequires(c, DaemonIsLinux)
manifestDigest, err := setupImage(c)
c.Assert(err, checker.IsNil)
// Load the target manifest blob.
manifestBlob := s.reg.ReadBlobContents(c, manifestDigest)
var imgManifest schema2.Manifest
err = json.Unmarshal(manifestBlob, &imgManifest)
c.Assert(err, checker.IsNil)
// Next, get the digest of one of the layers from the manifest.
targetLayerDigest := imgManifest.Layers[0].Digest
// Move the existing data file aside, so that we can replace it with a
// malicious blob of data. NOTE: we defer the returned undo func.
undo := s.reg.TempMoveBlobData(c, targetLayerDigest)
defer undo()
// Now make a fake data blob in this directory.
s.reg.WriteBlobContents(c, targetLayerDigest, []byte("This is not the data you are looking for."))
// Now try pulling that image by digest. We should get an error about
// digest verification for the target layer digest.
// Remove distribution cache to force a re-pull of the blobs
if err := os.RemoveAll(filepath.Join(dockerBasePath, "image", s.d.StorageDriver(), "distribution")); err != nil {
c.Fatalf("error clearing distribution cache: %v", err)
}
// Pull from the registry using the <name>@<digest> reference.
imageReference := fmt.Sprintf("%s@%s", repoName, manifestDigest)
out, exitStatus, _ := dockerCmdWithError("pull", imageReference)
c.Assert(exitStatus, checker.Not(check.Equals), 0, check.Commentf("expected a non-zero exit status"))
expectedErrorMsg := fmt.Sprintf("filesystem layer verification failed for digest %s", targetLayerDigest)
c.Assert(out, checker.Contains, expectedErrorMsg, check.Commentf("expected error message in output: %s", out))
}
// TestPullFailsWithAlteredLayer tests that a `docker pull` fails when
// we have modified a layer blob and its digest cannot be verified.
// This is the schema1 version of the test.
func (s *DockerSchema1RegistrySuite) TestPullFailsWithAlteredLayer(c *check.C) {
testRequires(c, DaemonIsLinux)
manifestDigest, err := setupImage(c)
c.Assert(err, checker.IsNil)
// Load the target manifest blob.
manifestBlob := s.reg.ReadBlobContents(c, manifestDigest)
var imgManifest schema1.Manifest
err = json.Unmarshal(manifestBlob, &imgManifest)
c.Assert(err, checker.IsNil)
// Next, get the digest of one of the layers from the manifest.
targetLayerDigest := imgManifest.FSLayers[0].BlobSum
// Move the existing data file aside, so that we can replace it with a
// malicious blob of data. NOTE: we defer the returned undo func.
undo := s.reg.TempMoveBlobData(c, targetLayerDigest)
defer undo()
// Now make a fake data blob in this directory.
s.reg.WriteBlobContents(c, targetLayerDigest, []byte("This is not the data you are looking for."))
// Now try pulling that image by digest. We should get an error about
// digest verification for the target layer digest.
// Remove distribution cache to force a re-pull of the blobs
if err := os.RemoveAll(filepath.Join(dockerBasePath, "image", s.d.StorageDriver(), "distribution")); err != nil {
c.Fatalf("error clearing distribution cache: %v", err)
}
// Pull from the registry using the <name>@<digest> reference.
imageReference := fmt.Sprintf("%s@%s", repoName, manifestDigest)
out, exitStatus, _ := dockerCmdWithError("pull", imageReference)
c.Assert(exitStatus, checker.Not(check.Equals), 0, check.Commentf("expected a non-zero exit status"))
expectedErrorMsg := fmt.Sprintf("filesystem layer verification failed for digest %s", targetLayerDigest)
c.Assert(out, checker.Contains, expectedErrorMsg, check.Commentf("expected error message in output: %s", out))
}