func splitHost(in string) (url string, ref reference.Named, err error) {
ref, err = reference.ParseNamed(in)
if err != nil {
return
}
url, name := reference.SplitHostname(ref)
ref, err = updateName(ref, name)
return
}
func validateName(name string) error {
distref, err := distreference.ParseNamed(name)
if err != nil {
return err
}
hostname, _ := distreference.SplitHostname(distref)
if hostname == "" {
return fmt.Errorf("Please use a fully qualified repository name")
}
return nil
}
// splitReposName breaks a reposName into an index name and remote name
func splitReposName(reposName reference.Named) (indexName string, remoteName reference.Named, err error) {
var remoteNameStr string
indexName, remoteNameStr = reference.SplitHostname(reposName)
if indexName == "" || (!strings.Contains(indexName, ".") &&
!strings.Contains(indexName, ":") && indexName != "localhost") {
// This is a Docker Index repos (ex: samalba/hipache or ubuntu)
// 'docker.io'
indexName = IndexName
remoteName = reposName
} else {
remoteName, err = reference.WithName(remoteNameStr)
}
return
}
// Check if the inspected image matches what we are looking for
func matchImageTagOrSHA(inspected dockertypes.ImageInspect, image string) bool {
// The image string follows the grammar specified here
// https://github.com/docker/distribution/blob/master/reference/reference.go#L4
named, err := dockerref.ParseNamed(image)
if err != nil {
glog.V(4).Infof("couldn't parse image reference %q: %v", image, err)
return false
}
_, isTagged := named.(dockerref.Tagged)
digest, isDigested := named.(dockerref.Digested)
if !isTagged && !isDigested {
// No Tag or SHA specified, so just return what we have
return true
}
if isTagged {
hostname, _ := dockerref.SplitHostname(named)
// Check the RepoTags for an exact match
for _, tag := range inspected.RepoTags {
// Deal with image with hostname specified
if len(hostname) > 0 {
if strings.HasSuffix(image, tag) {
return true
}
} else {
if tag == image {
// We found a specific tag that we were looking for
return true
}
}
}
}
if isDigested {
algo := digest.Digest().Algorithm().String()
sha := digest.Digest().Hex()
// Look specifically for short and long sha(s)
if strings.Contains(inspected.ID, algo+":"+sha) {
// We found the short or long SHA requested
return true
}
}
glog.V(4).Infof("Inspected image (%q) does not match %s", inspected.ID, image)
return false
}
// GetImageRegistryAuth retrieves the appropriate docker client authentication object for a given
// image name and a given set of client authentication objects.
func GetImageRegistryAuth(auths *AuthConfigurations, imageName string) api.AuthConfig {
glog.V(5).Infof("Getting docker credentials for %s", imageName)
namedReference, err := reference.ParseNamed(imageName)
if err != nil {
glog.V(0).Infof("error: Failed to parse docker reference %s", imageName)
return api.AuthConfig{}
}
hostname, _ := reference.SplitHostname(namedReference)
if strings.ContainsAny(hostname, ":.") || hostname == "localhost" {
if auth, ok := auths.Configs[hostname]; ok {
glog.V(5).Infof("Using %s[%s] credentials for pulling %s", auth.Email, hostname, imageName)
return auth
}
}
if auth, ok := auths.Configs[defaultRegistry]; ok {
glog.V(5).Infof("Using %s credentials for pulling %s", auth.Email, imageName)
return auth
}
return api.AuthConfig{}
}