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234b2230ef
containers/image/v5/docker/reference has same content, but less overhead. Partial fix for: https://github.com/containers/podman/issues/16205 Signed-off-by: Daniel J Walsh <dwalsh@redhat.com>
105 lines
3.8 KiB
Go
105 lines
3.8 KiB
Go
package utils
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import (
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"errors"
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"fmt"
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"net/http"
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"strings"
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"github.com/containers/common/libimage"
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"github.com/containers/image/v5/docker"
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"github.com/containers/image/v5/docker/reference"
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storageTransport "github.com/containers/image/v5/storage"
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"github.com/containers/image/v5/transports/alltransports"
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"github.com/containers/image/v5/types"
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"github.com/containers/podman/v4/libpod"
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api "github.com/containers/podman/v4/pkg/api/types"
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"github.com/containers/podman/v4/pkg/util"
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"github.com/containers/storage"
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)
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// NormalizeToDockerHub normalizes the specified nameOrID to Docker Hub if the
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// request is for the compat API and if containers.conf set the specific mode.
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// If nameOrID is a (short) ID for a local image, the full ID will be returned.
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func NormalizeToDockerHub(r *http.Request, nameOrID string) (string, error) {
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if IsLibpodRequest(r) || !util.DefaultContainerConfig().Engine.CompatAPIEnforceDockerHub {
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return nameOrID, nil
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}
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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// The candidate may resolve to a local non-Docker Hub image, such as
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// 'busybox' -> 'registry.com/busybox'.
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img, candidate, err := runtime.LibimageRuntime().LookupImage(nameOrID, nil)
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if err != nil {
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if !errors.Is(err, storage.ErrImageUnknown) {
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return "", fmt.Errorf("normalizing name for compat API: %v", err)
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}
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// If the image could not be resolved locally, set the
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// candidate back to the input.
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candidate = nameOrID
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} else if strings.HasPrefix(img.ID(), strings.TrimPrefix(nameOrID, "sha256:")) {
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return img.ID(), nil
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}
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// No ID, so we can normalize.
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named, err := reference.ParseNormalizedNamed(candidate)
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if err != nil {
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return "", fmt.Errorf("normalizing name %q (orig: %q) for compat API: %v", candidate, nameOrID, err)
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}
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return named.String(), nil
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}
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// PossiblyEnforceDockerHub sets fields in the system context to enforce
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// resolving short names to Docker Hub if the request is for the compat API and
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// if containers.conf set the specific mode.
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func PossiblyEnforceDockerHub(r *http.Request, sys *types.SystemContext) {
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if IsLibpodRequest(r) || !util.DefaultContainerConfig().Engine.CompatAPIEnforceDockerHub {
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return
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}
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sys.PodmanOnlyShortNamesIgnoreRegistriesConfAndForceDockerHub = true
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}
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// IsRegistryReference checks if the specified name points to the "docker://"
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// transport. If it points to no supported transport, we'll assume a
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// non-transport reference pointing to an image (e.g., "fedora:latest").
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func IsRegistryReference(name string) error {
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imageRef, err := alltransports.ParseImageName(name)
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if err != nil {
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// No supported transport -> assume a docker-stype reference.
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return nil //nolint: nilerr
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}
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if imageRef.Transport().Name() == docker.Transport.Name() {
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return nil
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}
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return fmt.Errorf("unsupported transport %s in %q: only docker transport is supported", imageRef.Transport().Name(), name)
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}
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// ParseStorageReference parses the specified image name to a
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// `types.ImageReference` and enforces it to refer to a
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// containers-storage-transport reference.
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func ParseStorageReference(name string) (types.ImageReference, error) {
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storagePrefix := storageTransport.Transport.Name()
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imageRef, err := alltransports.ParseImageName(name)
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if err == nil && imageRef.Transport().Name() != docker.Transport.Name() {
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return nil, fmt.Errorf("reference %q must be a storage reference", name)
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} else if err != nil {
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origErr := err
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imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s:%s", storagePrefix, name))
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if err != nil {
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return nil, fmt.Errorf("reference %q must be a storage reference: %w", name, origErr)
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}
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}
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return imageRef, nil
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}
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func GetImage(r *http.Request, name string) (*libimage.Image, error) {
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runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime)
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image, _, err := runtime.LibimageRuntime().LookupImage(name, nil)
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if err != nil {
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return nil, err
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}
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return image, err
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}
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