github.com/containerd/nerdctl/v2@v2.0.0-beta.5.0.20240520001846-b5758f54fa28/pkg/imgutil/dockerconfigresolver/dockerconfigresolver_util.go (about)

     1  /*
     2     Copyright The containerd Authors.
     3  
     4     Licensed under the Apache License, Version 2.0 (the "License");
     5     you may not use this file except in compliance with the License.
     6     You may obtain a copy of the License at
     7  
     8         http://www.apache.org/licenses/LICENSE-2.0
     9  
    10     Unless required by applicable law or agreed to in writing, software
    11     distributed under the License is distributed on an "AS IS" BASIS,
    12     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    13     See the License for the specific language governing permissions and
    14     limitations under the License.
    15  */
    16  
    17  /*
    18     Portions from https://github.com/moby/moby/blob/v20.10.18/registry/auth.go#L154-L167
    19     Copyright (C) Docker/Moby authors.
    20     Licensed under the Apache License, Version 2.0
    21     NOTICE: https://github.com/moby/moby/blob/v20.10.18/NOTICE
    22  */
    23  
    24  package dockerconfigresolver
    25  
    26  import (
    27  	"strings"
    28  )
    29  
    30  // IndexServer is used for user auth and image search
    31  //
    32  // From https://github.com/moby/moby/blob/v20.10.18/registry/config.go#L36-L39
    33  const IndexServer = "https://index.docker.io/v1/"
    34  
    35  // ConvertToHostname converts a registry url which has http|https prepended
    36  // to just an hostname.
    37  //
    38  // From https://github.com/moby/moby/blob/v20.10.18/registry/auth.go#L154-L167
    39  func ConvertToHostname(url string) string {
    40  	stripped := url
    41  	if strings.HasPrefix(url, "http://") {
    42  		stripped = strings.TrimPrefix(url, "http://")
    43  	} else if strings.HasPrefix(url, "https://") {
    44  		stripped = strings.TrimPrefix(url, "https://")
    45  	}
    46  
    47  	nameParts := strings.SplitN(stripped, "/", 2)
    48  
    49  	return nameParts[0]
    50  }