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package utils
import (
"fmt"
"net/http"
"strings"
"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/v2/libpod"
"github.com/containers/podman/v2/libpod/image"
"github.com/gorilla/schema"
"github.com/pkg/errors"
)
// ParseDockerReference parses the specified image name to a
// `types.ImageReference` and enforces it to refer to a docker-transport
// reference.
func ParseDockerReference(name string) (types.ImageReference, error) {
dockerPrefix := fmt.Sprintf("%s://", docker.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 docker reference", name)
} else if err != nil {
origErr := err
imageRef, err = alltransports.ParseImageName(fmt.Sprintf("%s%s", dockerPrefix, name))
if err != nil {
return nil, errors.Wrapf(origErr, "reference %q must be a docker reference", name)
}
}
return imageRef, nil
}
// 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) ([]*image.Image, error) {
decoder := r.Context().Value("decoder").(*schema.Decoder)
runtime := r.Context().Value("runtime").(*libpod.Runtime)
query := struct {
All bool
Filters map[string][]string `schema:"filters"`
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
}
var filters = []string{}
if _, found := r.URL.Query()["digests"]; found && query.Digests {
UnSupportedParameter("digests")
}
var (
images []*image.Image
err error
)
queryFilters := query.Filters
if !IsLibpodRequest(r) && len(query.Filter) > 0 { // Docker 1.24 compatibility
if queryFilters == nil {
queryFilters = make(map[string][]string)
}
queryFilters["reference"] = append(queryFilters["reference"], query.Filter)
}
if len(queryFilters) > 0 {
for k, v := range queryFilters {
filters = append(filters, fmt.Sprintf("%s=%s", k, strings.Join(v, "=")))
}
images, err = runtime.ImageRuntime().GetImagesWithFilters(filters)
if err != nil {
return images, err
}
} else {
images, err = runtime.ImageRuntime().GetImages()
if err != nil {
return images, err
}
}
if query.All {
return images, nil
}
returnImages := []*image.Image{}
for _, img := range images {
if len(img.Names()) == 0 {
parent, err := img.IsParent(r.Context())
if err != nil {
return nil, err
}
if parent {
continue
}
}
returnImages = append(returnImages, img)
}
return returnImages, nil
}
func GetImage(r *http.Request, name string) (*image.Image, error) {
runtime := r.Context().Value("runtime").(*libpod.Runtime)
return runtime.ImageRuntime().NewFromLocal(name)
}
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