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-rw-r--r--pkg/api/handlers/compat/images.go21
1 files changed, 17 insertions, 4 deletions
diff --git a/pkg/api/handlers/compat/images.go b/pkg/api/handlers/compat/images.go
index 940b57343..cc67ebcd1 100644
--- a/pkg/api/handlers/compat/images.go
+++ b/pkg/api/handlers/compat/images.go
@@ -20,9 +20,25 @@ import (
"github.com/containers/podman/v2/pkg/domain/entities"
"github.com/docker/docker/api/types"
"github.com/gorilla/schema"
+ "github.com/opencontainers/go-digest"
"github.com/pkg/errors"
)
+// mergeNameAndTagOrDigest creates an image reference as string from the
+// provided image name and tagOrDigest which can be a tag, a digest or empty.
+func mergeNameAndTagOrDigest(name, tagOrDigest string) string {
+ if len(tagOrDigest) == 0 {
+ return name
+ }
+
+ separator := ":" // default to tag
+ if _, err := digest.Parse(tagOrDigest); err == nil {
+ // We have a digest, so let's change the separator.
+ separator = "@"
+ }
+ return fmt.Sprintf("%s%s%s", name, separator, tagOrDigest)
+}
+
func ExportImage(w http.ResponseWriter, r *http.Request) {
// 200 ok
// 500 server
@@ -252,10 +268,7 @@ func CreateImageFromImage(w http.ResponseWriter, r *http.Request) {
return
}
- fromImage := query.FromImage
- if len(query.Tag) >= 1 {
- fromImage = fmt.Sprintf("%s:%s", fromImage, query.Tag)
- }
+ fromImage := mergeNameAndTagOrDigest(query.FromImage, query.Tag)
authConf, authfile, key, err := auth.GetCredentials(r)
if err != nil {