containerd/integration/image_load_test.go
Sebastiaan van Stijn 2af6db672e
switch back from golang.org/x/sys/execabs to os/exec (go1.19)
This is effectively a revert of 2ac9968401, which
switched from os/exec to the golang.org/x/sys/execabs package to mitigate
security issues (mainly on Windows) with lookups resolving to binaries in the
current directory.

from the go1.19 release notes https://go.dev/doc/go1.19#os-exec-path

> ## PATH lookups
>
> Command and LookPath no longer allow results from a PATH search to be found
> relative to the current directory. This removes a common source of security
> problems but may also break existing programs that depend on using, say,
> exec.Command("prog") to run a binary named prog (or, on Windows, prog.exe) in
> the current directory. See the os/exec package documentation for information
> about how best to update such programs.
>
> On Windows, Command and LookPath now respect the NoDefaultCurrentDirectoryInExePath
> environment variable, making it possible to disable the default implicit search
> of “.” in PATH lookups on Windows systems.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2023-11-02 21:15:40 +01:00

91 lines
3.2 KiB
Go

/*
Copyright The containerd Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package integration
import (
"os/exec"
"path/filepath"
"testing"
"time"
"github.com/containerd/containerd/v2/integration/images"
"github.com/stretchr/testify/require"
runtime "k8s.io/cri-api/pkg/apis/runtime/v1"
)
// Test to load an image from tarball.
func TestImageLoad(t *testing.T) {
testImage := images.Get(images.BusyBox)
loadedImage := testImage
_, err := exec.LookPath("docker")
if err != nil {
t.Skipf("Docker is not available: %v", err)
}
t.Logf("docker save image into tarball")
output, err := exec.Command("docker", "pull", testImage).CombinedOutput()
require.NoError(t, err, "output: %q", output)
// os.CreateTemp also opens a file, which might prevent us from overwriting that file with docker save.
tarDir := t.TempDir()
tar := filepath.Join(tarDir, "image.tar")
require.NoError(t, err)
output, err = exec.Command("docker", "save", testImage, "-o", tar).CombinedOutput()
require.NoError(t, err, "output: %q", output)
t.Logf("make sure no such image in cri")
img, err := imageService.ImageStatus(&runtime.ImageSpec{Image: testImage})
require.NoError(t, err)
if img != nil {
require.NoError(t, imageService.RemoveImage(&runtime.ImageSpec{Image: testImage}))
}
t.Logf("load image in cri")
ctr, err := exec.LookPath("ctr")
require.NoError(t, err, "ctr should be installed, make sure you've run `make install-deps`")
output, err = exec.Command(ctr, "-address="+containerdEndpoint,
"-n=k8s.io", "images", "import", tar).CombinedOutput()
require.NoError(t, err, "output: %q", output)
t.Logf("make sure image is loaded")
// Use Eventually because the cri plugin needs a short period of time
// to pick up images imported into containerd directly.
require.NoError(t, Eventually(func() (bool, error) {
img, err = imageService.ImageStatus(&runtime.ImageSpec{Image: testImage})
if err != nil {
return false, err
}
return img != nil, nil
}, 100*time.Millisecond, 10*time.Second))
require.Equal(t, []string{loadedImage}, img.RepoTags)
t.Logf("create a container with the loaded image")
sb, sbConfig := PodSandboxConfigWithCleanup(t, "sandbox", Randomize("image-load"))
containerConfig := ContainerConfig(
"container",
testImage,
WithCommand("tail", "-f", "/dev/null"),
)
// Rely on sandbox clean to do container cleanup.
cn, err := runtimeService.CreateContainer(sb, containerConfig, sbConfig)
require.NoError(t, err)
require.NoError(t, runtimeService.StartContainer(cn))
t.Logf("make sure container is running")
status, err := runtimeService.ContainerStatus(cn)
require.NoError(t, err)
require.Equal(t, runtime.ContainerState_CONTAINER_RUNNING, status.State)
}