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package main
import (
"fmt"
"github.com/containers/libpod/cmd/podman/cliconfig"
"github.com/spf13/cobra"
"io"
"os"
"strings"
"github.com/containers/image/directory"
"github.com/containers/image/manifest"
"github.com/containers/image/types"
"github.com/containers/libpod/cmd/podman/libpodruntime"
"github.com/containers/libpod/libpod/image"
"github.com/containers/libpod/pkg/util"
imgspecv1 "github.com/opencontainers/image-spec/specs-go/v1"
"github.com/pkg/errors"
)
var (
pushCommand cliconfig.PushValues
pushDescription = fmt.Sprintf(`
Pushes an image to a specified location.
The Image "DESTINATION" uses a "transport":"details" format.
See podman-push(1) section "DESTINATION" for the expected format`)
_pushCommand = &cobra.Command{
Use: "push",
Short: "Push an image to a specified destination",
Long: pushDescription,
RunE: func(cmd *cobra.Command, args []string) error {
pushCommand.InputArgs = args
pushCommand.GlobalFlags = MainGlobalOpts
return pushCmd(&pushCommand)
},
Example: "IMAGE DESTINATION",
}
)
func init() {
pushCommand.Command = _pushCommand
flags := pushCommand.Flags()
flags.MarkHidden("signature-policy")
flags.StringVar(&pushCommand.Authfile, "authfile", "", "Path of the authentication file. Default is ${XDG_RUNTIME_DIR}/containers/auth.json. Use REGISTRY_AUTH_FILE environment variable to override")
flags.StringVar(&pushCommand.CertDir, "cert-dir", "", "`Pathname` of a directory containing TLS certificates and keys")
flags.BoolVar(&pushCommand.Compress, "compress", false, "Compress tarball image layers when pushing to a directory using the 'dir' transport. (default is same compression type as source)")
flags.StringVar(&pushCommand.Creds, "creds", "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
flags.StringVarP(&pushCommand.Format, "format", "f", "", "Manifest type (oci, v2s1, or v2s2) to use when pushing an image using the 'dir:' transport (default is manifest type of source)")
flags.BoolVarP(&pushCommand.Quiet, "quiet", "q", false, "Don't output progress information when pushing images")
flags.BoolVar(&pushCommand.RemoveSignatures, "remove-signatures", false, "Discard any pre-existing signatures in the image")
flags.StringVar(&pushCommand.SignaturePolicy, "signature-policy", "", "`Pathname` of signature policy file (not usually used)")
flags.StringVar(&pushCommand.SignBy, "sign-by", "", "Add a signature at the destination using the specified key")
flags.BoolVar(&pushCommand.TlsVerify, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries (default: true)")
}
func pushCmd(c *cliconfig.PushValues) error {
var (
registryCreds *types.DockerAuthConfig
destName string
)
args := c.InputArgs
if len(args) == 0 || len(args) > 2 {
return errors.New("podman push requires at least one image name, and optionally a second to specify a different destination name")
}
srcName := args[0]
switch len(args) {
case 1:
destName = args[0]
case 2:
destName = args[1]
}
// --compress and --format can only be used for the "dir" transport
splitArg := strings.SplitN(destName, ":", 2)
if c.Flag("compress").Changed || c.Flag("format").Changed {
if splitArg[0] != directory.Transport.Name() {
return errors.Errorf("--compress and --format can be set only when pushing to a directory using the 'dir' transport")
}
}
certPath := c.CertDir
removeSignatures := c.RemoveSignatures
signBy := c.SignBy
if c.Flag("creds").Changed {
creds, err := util.ParseRegistryCreds(c.Creds)
if err != nil {
return err
}
registryCreds = creds
}
runtime, err := libpodruntime.GetRuntime(&c.PodmanCommand)
if err != nil {
return errors.Wrapf(err, "could not create runtime")
}
defer runtime.Shutdown(false)
var writer io.Writer
if !c.Quiet {
writer = os.Stderr
}
var manifestType string
if c.Flag("format").Changed {
switch c.String("format") {
case "oci":
manifestType = imgspecv1.MediaTypeImageManifest
case "v2s1":
manifestType = manifest.DockerV2Schema1SignedMediaType
case "v2s2", "docker":
manifestType = manifest.DockerV2Schema2MediaType
default:
return fmt.Errorf("unknown format %q. Choose on of the supported formats: 'oci', 'v2s1', or 'v2s2'", c.String("format"))
}
}
dockerRegistryOptions := image.DockerRegistryOptions{
DockerRegistryCreds: registryCreds,
DockerCertPath: certPath,
}
if c.Flag("tls-verify").Changed {
dockerRegistryOptions.DockerInsecureSkipTLSVerify = types.NewOptionalBool(!c.TlsVerify)
}
so := image.SigningOptions{
RemoveSignatures: removeSignatures,
SignBy: signBy,
}
newImage, err := runtime.ImageRuntime().NewFromLocal(srcName)
if err != nil {
return err
}
authfile := getAuthFile(c.Authfile)
return newImage.PushImageToHeuristicDestination(getContext(), destName, manifestType, authfile, c.SignaturePolicy, writer, c.Compress, so, &dockerRegistryOptions, nil)
}
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