mirror of
https://github.com/moby/moby.git
synced 2022-11-09 12:21:53 -05:00
691 lines
26 KiB
Go
691 lines
26 KiB
Go
package main
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import (
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"encoding/json"
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"fmt"
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"os"
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"path/filepath"
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"regexp"
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"strings"
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"github.com/docker/distribution/manifest/schema1"
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"github.com/docker/distribution/manifest/schema2"
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"github.com/docker/docker/api/types"
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"github.com/docker/docker/integration-cli/checker"
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"github.com/docker/docker/integration-cli/cli"
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"github.com/docker/docker/integration-cli/cli/build"
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"github.com/go-check/check"
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"github.com/opencontainers/go-digest"
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"gotest.tools/assert"
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is "gotest.tools/assert/cmp"
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)
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var (
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remoteRepoName = "dockercli/busybox-by-dgst"
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repoName = fmt.Sprintf("%s/%s", privateRegistryURL, remoteRepoName)
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pushDigestRegex = regexp.MustCompile("[\\S]+: digest: ([\\S]+) size: [0-9]+")
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digestRegex = regexp.MustCompile("Digest: ([\\S]+)")
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)
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func setupImage(c *check.C) (digest.Digest, error) {
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return setupImageWithTag(c, "latest")
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}
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func setupImageWithTag(c *check.C, tag string) (digest.Digest, error) {
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containerName := "busyboxbydigest"
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// new file is committed because this layer is used for detecting malicious
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// changes. if this was committed as empty layer it would be skipped on pull
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// and malicious changes would never be detected.
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cli.DockerCmd(c, "run", "-e", "digest=1", "--name", containerName, "busybox", "touch", "anewfile")
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// tag the image to upload it to the private registry
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repoAndTag := repoName + ":" + tag
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cli.DockerCmd(c, "commit", containerName, repoAndTag)
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// delete the container as we don't need it any more
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cli.DockerCmd(c, "rm", "-fv", containerName)
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// push the image
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out := cli.DockerCmd(c, "push", repoAndTag).Combined()
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// delete our local repo that we previously tagged
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cli.DockerCmd(c, "rmi", repoAndTag)
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matches := pushDigestRegex.FindStringSubmatch(out)
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assert.Equal(c, len(matches), 2, "unable to parse digest from push output: %s", out)
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pushDigest := matches[1]
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return digest.Digest(pushDigest), nil
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}
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func testPullByTagDisplaysDigest(c *check.C) {
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testRequires(c, DaemonIsLinux)
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pushDigest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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// pull from the registry using the tag
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out, _ := dockerCmd(c, "pull", repoName)
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// the pull output includes "Digest: <digest>", so find that
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matches := digestRegex.FindStringSubmatch(out)
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assert.Equal(c, len(matches), 2, "unable to parse digest from push output: %s", out)
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pullDigest := matches[1]
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// make sure the pushed and pull digests match
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c.Assert(pushDigest.String(), checker.Equals, pullDigest)
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}
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func (s *DockerRegistrySuite) TestPullByTagDisplaysDigest(c *check.C) {
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testPullByTagDisplaysDigest(c)
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}
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func (s *DockerSchema1RegistrySuite) TestPullByTagDisplaysDigest(c *check.C) {
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testPullByTagDisplaysDigest(c)
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}
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func testPullByDigest(c *check.C) {
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testRequires(c, DaemonIsLinux)
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pushDigest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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// pull from the registry using the <name>@<digest> reference
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imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
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out, _ := dockerCmd(c, "pull", imageReference)
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// the pull output includes "Digest: <digest>", so find that
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matches := digestRegex.FindStringSubmatch(out)
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assert.Equal(c, len(matches), 2, "unable to parse digest from push output: %s", out)
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pullDigest := matches[1]
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// make sure the pushed and pull digests match
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c.Assert(pushDigest.String(), checker.Equals, pullDigest)
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}
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func (s *DockerRegistrySuite) TestPullByDigest(c *check.C) {
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testPullByDigest(c)
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}
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func (s *DockerSchema1RegistrySuite) TestPullByDigest(c *check.C) {
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testPullByDigest(c)
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}
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func testPullByDigestNoFallback(c *check.C) {
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testRequires(c, DaemonIsLinux)
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// pull from the registry using the <name>@<digest> reference
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imageReference := fmt.Sprintf("%s@sha256:ffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff", repoName)
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out, _, err := dockerCmdWithError("pull", imageReference)
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c.Assert(err, checker.NotNil, check.Commentf("expected non-zero exit status and correct error message when pulling non-existing image"))
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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"))
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}
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func (s *DockerRegistrySuite) TestPullByDigestNoFallback(c *check.C) {
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testPullByDigestNoFallback(c)
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}
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func (s *DockerSchema1RegistrySuite) TestPullByDigestNoFallback(c *check.C) {
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testPullByDigestNoFallback(c)
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}
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func (s *DockerRegistrySuite) TestCreateByDigest(c *check.C) {
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pushDigest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
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containerName := "createByDigest"
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dockerCmd(c, "create", "--name", containerName, imageReference)
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res := inspectField(c, containerName, "Config.Image")
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assert.Equal(c, res, imageReference)
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}
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func (s *DockerRegistrySuite) TestRunByDigest(c *check.C) {
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pushDigest, err := setupImage(c)
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assert.NilError(c, err)
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imageReference := fmt.Sprintf("%s@%s", repoName, pushDigest)
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containerName := "runByDigest"
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out, _ := dockerCmd(c, "run", "--name", containerName, imageReference, "sh", "-c", "echo found=$digest")
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foundRegex := regexp.MustCompile("found=([^\n]+)")
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matches := foundRegex.FindStringSubmatch(out)
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c.Assert(matches, checker.HasLen, 2, check.Commentf("unable to parse digest from pull output: %s", out))
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c.Assert(matches[1], checker.Equals, "1", check.Commentf("Expected %q, got %q", "1", matches[1]))
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res := inspectField(c, containerName, "Config.Image")
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assert.Equal(c, res, imageReference)
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}
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func (s *DockerRegistrySuite) TestRemoveImageByDigest(c *check.C) {
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digest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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imageReference := fmt.Sprintf("%s@%s", repoName, digest)
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// pull from the registry using the <name>@<digest> reference
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dockerCmd(c, "pull", imageReference)
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// make sure inspect runs ok
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inspectField(c, imageReference, "Id")
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// do the delete
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err = deleteImages(imageReference)
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assert.NilError(c, err, "unexpected error deleting image")
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// try to inspect again - it should error this time
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_, err = inspectFieldWithError(imageReference, "Id")
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//unexpected nil err trying to inspect what should be a non-existent image
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assert.ErrorContains(c, err, "No such object")
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}
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func (s *DockerRegistrySuite) TestBuildByDigest(c *check.C) {
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digest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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imageReference := fmt.Sprintf("%s@%s", repoName, digest)
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// pull from the registry using the <name>@<digest> reference
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dockerCmd(c, "pull", imageReference)
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// get the image id
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imageID := inspectField(c, imageReference, "Id")
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// do the build
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name := "buildbydigest"
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buildImageSuccessfully(c, name, build.WithDockerfile(fmt.Sprintf(
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`FROM %s
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CMD ["/bin/echo", "Hello World"]`, imageReference)))
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assert.NilError(c, err)
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// get the build's image id
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res := inspectField(c, name, "Config.Image")
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// make sure they match
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assert.Equal(c, res, imageID)
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}
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func (s *DockerRegistrySuite) TestTagByDigest(c *check.C) {
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digest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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imageReference := fmt.Sprintf("%s@%s", repoName, digest)
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// pull from the registry using the <name>@<digest> reference
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dockerCmd(c, "pull", imageReference)
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// tag it
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tag := "tagbydigest"
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dockerCmd(c, "tag", imageReference, tag)
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expectedID := inspectField(c, imageReference, "Id")
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tagID := inspectField(c, tag, "Id")
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assert.Equal(c, tagID, expectedID)
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}
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func (s *DockerRegistrySuite) TestListImagesWithoutDigests(c *check.C) {
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digest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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imageReference := fmt.Sprintf("%s@%s", repoName, digest)
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// pull from the registry using the <name>@<digest> reference
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dockerCmd(c, "pull", imageReference)
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out, _ := dockerCmd(c, "images")
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c.Assert(out, checker.Not(checker.Contains), "DIGEST", check.Commentf("list output should not have contained DIGEST header"))
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}
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func (s *DockerRegistrySuite) TestListImagesWithDigests(c *check.C) {
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// setup image1
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digest1, err := setupImageWithTag(c, "tag1")
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assert.NilError(c, err, "error setting up image")
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imageReference1 := fmt.Sprintf("%s@%s", repoName, digest1)
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c.Logf("imageReference1 = %s", imageReference1)
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// pull image1 by digest
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dockerCmd(c, "pull", imageReference1)
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// list images
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out, _ := dockerCmd(c, "images", "--digests")
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// make sure repo shown, tag=<none>, digest = $digest1
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re1 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest1.String() + `\s`)
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c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
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// setup image2
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digest2, err := setupImageWithTag(c, "tag2")
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//error setting up image
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assert.NilError(c, err)
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imageReference2 := fmt.Sprintf("%s@%s", repoName, digest2)
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c.Logf("imageReference2 = %s", imageReference2)
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// pull image1 by digest
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dockerCmd(c, "pull", imageReference1)
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// pull image2 by digest
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dockerCmd(c, "pull", imageReference2)
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// list images
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out, _ = dockerCmd(c, "images", "--digests")
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// make sure repo shown, tag=<none>, digest = $digest1
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c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
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// make sure repo shown, tag=<none>, digest = $digest2
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re2 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest2.String() + `\s`)
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c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
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// pull tag1
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dockerCmd(c, "pull", repoName+":tag1")
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// list images
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out, _ = dockerCmd(c, "images", "--digests")
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// make sure image 1 has repo, tag, <none> AND repo, <none>, digest
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reWithDigest1 := regexp.MustCompile(`\s*` + repoName + `\s*tag1\s*` + digest1.String() + `\s`)
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c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
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// make sure image 2 has repo, <none>, digest
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c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
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// pull tag 2
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dockerCmd(c, "pull", repoName+":tag2")
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// list images
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out, _ = dockerCmd(c, "images", "--digests")
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// make sure image 1 has repo, tag, digest
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c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
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// make sure image 2 has repo, tag, digest
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reWithDigest2 := regexp.MustCompile(`\s*` + repoName + `\s*tag2\s*` + digest2.String() + `\s`)
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c.Assert(reWithDigest2.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest2.String(), out))
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// list images
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out, _ = dockerCmd(c, "images", "--digests")
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// make sure image 1 has repo, tag, digest
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c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
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// make sure image 2 has repo, tag, digest
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c.Assert(reWithDigest2.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest2.String(), out))
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// make sure busybox has tag, but not digest
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busyboxRe := regexp.MustCompile(`\s*busybox\s*latest\s*<none>\s`)
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c.Assert(busyboxRe.MatchString(out), checker.True, check.Commentf("expected %q: %s", busyboxRe.String(), out))
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}
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func (s *DockerRegistrySuite) TestListDanglingImagesWithDigests(c *check.C) {
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// setup image1
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digest1, err := setupImageWithTag(c, "dangle1")
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assert.NilError(c, err, "error setting up image")
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imageReference1 := fmt.Sprintf("%s@%s", repoName, digest1)
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c.Logf("imageReference1 = %s", imageReference1)
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// pull image1 by digest
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dockerCmd(c, "pull", imageReference1)
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// list images
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out, _ := dockerCmd(c, "images", "--digests")
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// make sure repo shown, tag=<none>, digest = $digest1
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re1 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest1.String() + `\s`)
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c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
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// setup image2
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digest2, err := setupImageWithTag(c, "dangle2")
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//error setting up image
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assert.NilError(c, err)
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imageReference2 := fmt.Sprintf("%s@%s", repoName, digest2)
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c.Logf("imageReference2 = %s", imageReference2)
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// pull image1 by digest
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dockerCmd(c, "pull", imageReference1)
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// pull image2 by digest
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dockerCmd(c, "pull", imageReference2)
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// list images
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out, _ = dockerCmd(c, "images", "--digests", "--filter=dangling=true")
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// make sure repo shown, tag=<none>, digest = $digest1
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c.Assert(re1.MatchString(out), checker.True, check.Commentf("expected %q: %s", re1.String(), out))
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// make sure repo shown, tag=<none>, digest = $digest2
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re2 := regexp.MustCompile(`\s*` + repoName + `\s*<none>\s*` + digest2.String() + `\s`)
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c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
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// pull dangle1 tag
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dockerCmd(c, "pull", repoName+":dangle1")
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// list images
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out, _ = dockerCmd(c, "images", "--digests", "--filter=dangling=true")
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// make sure image 1 has repo, tag, <none> AND repo, <none>, digest
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reWithDigest1 := regexp.MustCompile(`\s*` + repoName + `\s*dangle1\s*` + digest1.String() + `\s`)
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c.Assert(reWithDigest1.MatchString(out), checker.False, check.Commentf("unexpected %q: %s", reWithDigest1.String(), out))
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// make sure image 2 has repo, <none>, digest
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c.Assert(re2.MatchString(out), checker.True, check.Commentf("expected %q: %s", re2.String(), out))
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// pull dangle2 tag
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dockerCmd(c, "pull", repoName+":dangle2")
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// list images, show tagged images
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out, _ = dockerCmd(c, "images", "--digests")
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// make sure image 1 has repo, tag, digest
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c.Assert(reWithDigest1.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest1.String(), out))
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// make sure image 2 has repo, tag, digest
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reWithDigest2 := regexp.MustCompile(`\s*` + repoName + `\s*dangle2\s*` + digest2.String() + `\s`)
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c.Assert(reWithDigest2.MatchString(out), checker.True, check.Commentf("expected %q: %s", reWithDigest2.String(), out))
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// list images, no longer dangling, should not match
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out, _ = dockerCmd(c, "images", "--digests", "--filter=dangling=true")
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// make sure image 1 has repo, tag, digest
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c.Assert(reWithDigest1.MatchString(out), checker.False, check.Commentf("unexpected %q: %s", reWithDigest1.String(), out))
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// make sure image 2 has repo, tag, digest
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c.Assert(reWithDigest2.MatchString(out), checker.False, check.Commentf("unexpected %q: %s", reWithDigest2.String(), out))
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}
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func (s *DockerRegistrySuite) TestInspectImageWithDigests(c *check.C) {
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digest, err := setupImage(c)
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c.Assert(err, check.IsNil, check.Commentf("error setting up image"))
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imageReference := fmt.Sprintf("%s@%s", repoName, digest)
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// pull from the registry using the <name>@<digest> reference
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dockerCmd(c, "pull", imageReference)
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out, _ := dockerCmd(c, "inspect", imageReference)
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var imageJSON []types.ImageInspect
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err = json.Unmarshal([]byte(out), &imageJSON)
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assert.NilError(c, err)
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c.Assert(imageJSON, checker.HasLen, 1)
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c.Assert(imageJSON[0].RepoDigests, checker.HasLen, 1)
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assert.Check(c, is.Contains(imageJSON[0].RepoDigests, imageReference))
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}
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func (s *DockerRegistrySuite) TestPsListContainersFilterAncestorImageByDigest(c *check.C) {
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existingContainers := ExistingContainerIDs(c)
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digest, err := setupImage(c)
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assert.NilError(c, err, "error setting up image")
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imageReference := fmt.Sprintf("%s@%s", repoName, digest)
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// pull from the registry using the <name>@<digest> reference
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dockerCmd(c, "pull", imageReference)
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// build an image from it
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imageName1 := "images_ps_filter_test"
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buildImageSuccessfully(c, imageName1, build.WithDockerfile(fmt.Sprintf(
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`FROM %s
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LABEL match me 1`, imageReference)))
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// run a container based on that
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dockerCmd(c, "run", "--name=test1", imageReference, "echo", "hello")
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expectedID := getIDByName(c, "test1")
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// run a container based on the a descendant of that too
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dockerCmd(c, "run", "--name=test2", imageName1, "echo", "hello")
|
|
expectedID1 := getIDByName(c, "test2")
|
|
|
|
expectedIDs := []string{expectedID, expectedID1}
|
|
|
|
// Invalid imageReference
|
|
out, _ := dockerCmd(c, "ps", "-a", "-q", "--no-trunc", fmt.Sprintf("--filter=ancestor=busybox@%s", digest))
|
|
assert.Equal(c, strings.TrimSpace(out), "", "Filter container for ancestor filter should be empty")
|
|
|
|
// Valid imageReference
|
|
out, _ = dockerCmd(c, "ps", "-a", "-q", "--no-trunc", "--filter=ancestor="+imageReference)
|
|
checkPsAncestorFilterOutput(c, RemoveOutputForExistingElements(out, existingContainers), imageReference, expectedIDs)
|
|
}
|
|
|
|
func (s *DockerRegistrySuite) TestDeleteImageByIDOnlyPulledByDigest(c *check.C) {
|
|
pushDigest, err := setupImage(c)
|
|
assert.NilError(c, err, "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")
|
|
assert.ErrorContains(c, err, "", "image should have been deleted")
|
|
}
|
|
|
|
func (s *DockerRegistrySuite) TestDeleteImageWithDigestAndTag(c *check.C) {
|
|
pushDigest, err := setupImage(c)
|
|
assert.NilError(c, err, "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")
|
|
assert.ErrorContains(c, err, "", "image should have been deleted")
|
|
}
|
|
|
|
func (s *DockerRegistrySuite) TestDeleteImageWithDigestAndMultiRepoTag(c *check.C) {
|
|
pushDigest, err := setupImage(c)
|
|
assert.NilError(c, err, "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")
|
|
assert.ErrorContains(c, err, "", "image digest reference should have been removed")
|
|
|
|
_, err = inspectFieldWithError(repoTag, "Id")
|
|
assert.ErrorContains(c, err, "", "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")
|
|
assert.ErrorContains(c, err, "", "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)
|
|
assert.NilError(c, err, "error setting up image")
|
|
|
|
// Load the target manifest blob.
|
|
manifestBlob := s.reg.ReadBlobContents(c, manifestDigest)
|
|
|
|
var imgManifest schema2.Manifest
|
|
err = json.Unmarshal(manifestBlob, &imgManifest)
|
|
assert.NilError(c, err, "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, "", " ")
|
|
assert.NilError(c, err, "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)
|
|
assert.Assert(c, is.Contains(out, 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(testEnv.DaemonInfo.DockerRootDir, "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(testEnv.DaemonInfo.DockerRootDir, "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))
|
|
}
|