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package images
import (
"os"
buildahcli "github.com/containers/buildah/pkg/cli"
"github.com/containers/image/v5/types"
"github.com/containers/libpod/cmd/podman/registry"
"github.com/containers/libpod/pkg/domain/entities"
"github.com/pkg/errors"
"github.com/spf13/cobra"
"github.com/spf13/pflag"
)
// pushOptionsWrapper wraps entities.ImagepushOptions and prevents leaking
// CLI-only fields into the API types.
type pushOptionsWrapper struct {
entities.ImagePushOptions
TLSVerifyCLI bool // CLI only
}
var (
pushOptions = pushOptionsWrapper{}
pushDescription = `Pushes a source image to a specified destination.
The Image "DESTINATION" uses a "transport":"details" format. See podman-push(1) section "DESTINATION" for the expected format.`
// Command: podman push
pushCmd = &cobra.Command{
Use: "push [flags] SOURCE DESTINATION",
Short: "Push an image to a specified destination",
Long: pushDescription,
RunE: imagePush,
Example: `podman push imageID docker://registry.example.com/repository:tag
podman push imageID oci-archive:/path/to/layout:image:tag`,
}
// Command: podman image push
// It's basically a clone of `pushCmd` with the exception of being a
// child of the images command.
imagePushCmd = &cobra.Command{
Use: pushCmd.Use,
Short: pushCmd.Short,
Long: pushCmd.Long,
RunE: pushCmd.RunE,
Example: `podman image push imageID docker://registry.example.com/repository:tag
podman image push imageID oci-archive:/path/to/layout:image:tag`,
}
)
func init() {
// push
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: pushCmd,
})
flags := pushCmd.Flags()
pushFlags(flags)
// images push
registry.Commands = append(registry.Commands, registry.CliCommand{
Mode: []entities.EngineMode{entities.ABIMode, entities.TunnelMode},
Command: imagePushCmd,
Parent: imageCmd,
})
pushFlags(imagePushCmd.Flags())
}
// pushFlags set the flags for the push command.
func pushFlags(flags *pflag.FlagSet) {
flags.StringVar(&pushOptions.Authfile, "authfile", buildahcli.GetDefaultAuthFile(), "Path of the authentication file. Use REGISTRY_AUTH_FILE environment variable to override")
flags.StringVar(&pushOptions.CertDir, "cert-dir", "", "Path to a directory containing TLS certificates and keys")
flags.BoolVar(&pushOptions.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(&pushOptions.Credentials, "creds", "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
flags.StringVar(&pushOptions.DigestFile, "digestfile", "", "Write the digest of the pushed image to the specified file")
flags.StringVarP(&pushOptions.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(&pushOptions.Quiet, "quiet", "q", false, "Suppress output information when pushing images")
flags.BoolVar(&pushOptions.RemoveSignatures, "remove-signatures", false, "Discard any pre-existing signatures in the image")
flags.StringVar(&pushOptions.SignaturePolicy, "signature-policy", "", "Path to a signature-policy file")
flags.StringVar(&pushOptions.SignBy, "sign-by", "", "Add a signature at the destination using the specified key")
flags.BoolVar(&pushOptions.TLSVerifyCLI, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
if registry.IsRemote() {
_ = flags.MarkHidden("authfile")
_ = flags.MarkHidden("cert-dir")
_ = flags.MarkHidden("compress")
_ = flags.MarkHidden("quiet")
_ = flags.MarkHidden("signature-policy")
_ = flags.MarkHidden("tls-verify")
}
}
// imagePush is implement the command for pushing images.
func imagePush(cmd *cobra.Command, args []string) error {
var source, destination string
switch len(args) {
case 1:
source = args[0]
case 2:
source = args[0]
destination = args[1]
case 0:
fallthrough
default:
return errors.New("push requires at least one image name, or optionally a second to specify a different destination")
}
pushOptsAPI := pushOptions.ImagePushOptions
// TLS verification in c/image is controlled via a `types.OptionalBool`
// which allows for distinguishing among set-true, set-false, unspecified
// which is important to implement a sane way of dealing with defaults of
// boolean CLI flags.
if cmd.Flags().Changed("tls-verify") {
pushOptsAPI.TLSVerify = types.NewOptionalBool(pushOptions.TLSVerifyCLI)
}
if pushOptsAPI.Authfile != "" {
if _, err := os.Stat(pushOptsAPI.Authfile); err != nil {
return errors.Wrapf(err, "error getting authfile %s", pushOptsAPI.Authfile)
}
}
// Let's do all the remaining Yoga in the API to prevent us from scattering
// logic across (too) many parts of the code.
return registry.ImageEngine().Push(registry.GetContext(), source, destination, pushOptsAPI)
}
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