package utils import ( "fmt" "net/http" "github.com/containers/common/libimage" "github.com/containers/common/pkg/filters" "github.com/containers/image/v5/docker" "github.com/containers/image/v5/storage" "github.com/containers/image/v5/transports/alltransports" "github.com/containers/image/v5/types" "github.com/containers/podman/v3/libpod" api "github.com/containers/podman/v3/pkg/api/types" "github.com/gorilla/schema" "github.com/pkg/errors" ) // IsRegistryReference checks if the specified name points to the "docker://" // transport. If it points to no supported transport, we'll assume a // non-transport reference pointing to an image (e.g., "fedora:latest"). func IsRegistryReference(name string) error { imageRef, err := alltransports.ParseImageName(name) if err != nil { // No supported transport -> assume a docker-stype reference. return nil } if imageRef.Transport().Name() == docker.Transport.Name() { return nil } return errors.Errorf("unsupported transport %s in %q: only docker transport is supported", imageRef.Transport().Name(), name) } // ParseStorageReference parses the specified image name to a // `types.ImageReference` and enforces it to refer to a // containers-storage-transport reference. func ParseStorageReference(name string) (types.ImageReference, error) { storagePrefix := fmt.Sprintf("%s:", storage.Transport.Name()) imageRef, err := alltransports.ParseImageName(name) if err == nil && imageRef.Transport().Name() != docker.Transport.Name() { return nil, errors.Errorf("reference %q must be a storage reference", name) } else if err != nil { origErr := err imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s%s", storagePrefix, name)) if err != nil { return nil, errors.Wrapf(origErr, "reference %q must be a storage reference", name) } } return imageRef, nil } // GetImages is a common function used to get images for libpod and other compatibility // mechanisms func GetImages(w http.ResponseWriter, r *http.Request) ([]*libimage.Image, error) { decoder := r.Context().Value(api.DecoderKey).(*schema.Decoder) runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime) query := struct { All bool Digests bool Filter string // Docker 1.24 compatibility }{ // This is where you can override the golang default value for one of fields } if err := decoder.Decode(&query, r.URL.Query()); err != nil { return nil, err } if _, found := r.URL.Query()["digests"]; found && query.Digests { UnSupportedParameter("digests") } filterList, err := filters.FiltersFromRequest(r) if err != nil { return nil, err } if !IsLibpodRequest(r) && len(query.Filter) > 0 { // Docker 1.24 compatibility filterList = append(filterList, "reference="+query.Filter) } if !query.All { // Filter intermediate images unless we want to list *all*. // NOTE: it's a positive filter, so `intermediate=false` means // to display non-intermediate images. filterList = append(filterList, "intermediate=false") } listOptions := &libimage.ListImagesOptions{Filters: filterList} return runtime.LibimageRuntime().ListImages(r.Context(), nil, listOptions) } func GetImage(r *http.Request, name string) (*libimage.Image, error) { runtime := r.Context().Value(api.RuntimeKey).(*libpod.Runtime) image, _, err := runtime.LibimageRuntime().LookupImage(name, nil) if err != nil { return nil, err } return image, err }