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package images
import (
"os"
"github.com/containers/common/pkg/auth"
"github.com/containers/common/pkg/completion"
"github.com/containers/image/v5/types"
"github.com/containers/podman/v4/cmd/podman/common"
"github.com/containers/podman/v4/cmd/podman/registry"
"github.com/containers/podman/v4/pkg/domain/entities"
"github.com/containers/podman/v4/pkg/util"
"github.com/spf13/cobra"
)
// pushOptionsWrapper wraps entities.ImagepushOptions and prevents leaking
// CLI-only fields into the API types.
type pushOptionsWrapper struct {
entities.ImagePushOptions
TLSVerifyCLI bool // CLI only
CredentialsCLI string
}
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 [options] IMAGE [DESTINATION]",
Short: "Push an image to a specified destination",
Long: pushDescription,
RunE: imagePush,
Args: cobra.RangeArgs(1, 2),
ValidArgsFunction: common.AutocompleteImages,
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,
Args: pushCmd.Args,
ValidArgsFunction: pushCmd.ValidArgsFunction,
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{
Command: pushCmd,
})
pushFlags(pushCmd)
// images push
registry.Commands = append(registry.Commands, registry.CliCommand{
Command: imagePushCmd,
Parent: imageCmd,
})
pushFlags(imagePushCmd)
}
// pushFlags set the flags for the push command.
func pushFlags(cmd *cobra.Command) {
flags := cmd.Flags()
// For now default All flag to true, for pushing of manifest lists
pushOptions.All = true
authfileFlagName := "authfile"
flags.StringVar(&pushOptions.Authfile, authfileFlagName, auth.GetDefaultAuthFile(), "Path of the authentication file. Use REGISTRY_AUTH_FILE environment variable to override")
_ = cmd.RegisterFlagCompletionFunc(authfileFlagName, completion.AutocompleteDefault)
certDirFlagName := "cert-dir"
flags.StringVar(&pushOptions.CertDir, certDirFlagName, "", "Path to a directory containing TLS certificates and keys")
_ = cmd.RegisterFlagCompletionFunc(certDirFlagName, completion.AutocompleteDefault)
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)")
credsFlagName := "creds"
flags.StringVar(&pushOptions.CredentialsCLI, credsFlagName, "", "`Credentials` (USERNAME:PASSWORD) to use for authenticating to a registry")
_ = cmd.RegisterFlagCompletionFunc(credsFlagName, completion.AutocompleteNone)
flags.Bool("disable-content-trust", false, "This is a Docker specific option and is a NOOP")
digestfileFlagName := "digestfile"
flags.StringVar(&pushOptions.DigestFile, digestfileFlagName, "", "Write the digest of the pushed image to the specified file")
_ = cmd.RegisterFlagCompletionFunc(digestfileFlagName, completion.AutocompleteDefault)
formatFlagName := "format"
flags.StringVarP(&pushOptions.Format, formatFlagName, "f", "", "Manifest type (oci, v2s2, or v2s1) to use in the destination (default is manifest type of source, with fallbacks)")
_ = cmd.RegisterFlagCompletionFunc(formatFlagName, common.AutocompleteManifestFormat)
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")
signByFlagName := "sign-by"
flags.StringVar(&pushOptions.SignBy, signByFlagName, "", "Add a signature at the destination using the specified key")
_ = cmd.RegisterFlagCompletionFunc(signByFlagName, completion.AutocompleteNone)
flags.BoolVar(&pushOptions.TLSVerifyCLI, "tls-verify", true, "Require HTTPS and verify certificates when contacting registries")
compressionFormat := "compression-format"
flags.StringVar(&pushOptions.CompressionFormat, compressionFormat, "", "compression format to use")
_ = cmd.RegisterFlagCompletionFunc(compressionFormat, common.AutocompleteCompressionFormat)
if registry.IsRemote() {
_ = flags.MarkHidden("cert-dir")
_ = flags.MarkHidden("compress")
_ = flags.MarkHidden("digestfile")
_ = flags.MarkHidden("quiet")
_ = flags.MarkHidden("sign-by")
}
if !registry.IsRemote() {
flags.StringVar(&pushOptions.SignaturePolicy, "signature-policy", "", "Path to a signature-policy file")
_ = flags.MarkHidden("signature-policy")
}
}
// imagePush is implement the command for pushing images.
func imagePush(cmd *cobra.Command, args []string) error {
source := args[0]
destination := args[len(args)-1]
// 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") {
pushOptions.SkipTLSVerify = types.NewOptionalBool(!pushOptions.TLSVerifyCLI)
}
if pushOptions.Authfile != "" {
if _, err := os.Stat(pushOptions.Authfile); err != nil {
return err
}
}
if pushOptions.CredentialsCLI != "" {
creds, err := util.ParseRegistryCreds(pushOptions.CredentialsCLI)
if err != nil {
return err
}
pushOptions.Username = creds.Username
pushOptions.Password = creds.Password
}
// 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, pushOptions.ImagePushOptions)
}
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