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79 lines
2.4 KiB
79 lines
2.4 KiB
/*
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Copyright The Helm Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package registry
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import (
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"strings"
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"oras.land/oras-go/v2/registry"
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)
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type reference struct {
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orasReference registry.Reference
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Registry string
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Repository string
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Tag string
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Digest string
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}
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// newReference will parse and validate the reference, and clean tags when
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// applicable tags are only cleaned when plus (+) signs are present, and are
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// converted to underscores (_) before pushing
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// See https://github.com/helm/helm/issues/10166
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func newReference(raw string) (result reference, err error) {
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// Remove oci:// prefix if it is there
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raw = strings.TrimPrefix(raw, OCIScheme+"://")
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// The sole possible reference modification is replacing plus (+) signs
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// present in tags with underscores (_). To do this properly, we first
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// need to identify a tag, and then pass it on to the reference parser
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// NOTE: Passing immediately to the reference parser will fail since (+)
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// signs are an invalid tag character, and simply replacing all plus (+)
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// occurrences could invalidate other portions of the URI
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lastIndex := strings.LastIndex(raw, "@")
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if lastIndex >= 0 {
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result.Digest = raw[(lastIndex + 1):]
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raw = raw[:lastIndex]
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}
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parts := strings.Split(raw, ":")
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if len(parts) > 1 && !strings.Contains(parts[len(parts)-1], "/") {
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tag := parts[len(parts)-1]
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if tag != "" {
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// Replace any plus (+) signs with known underscore (_) conversion
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newTag := strings.ReplaceAll(tag, "+", "_")
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raw = strings.ReplaceAll(raw, tag, newTag)
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}
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}
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result.orasReference, err = registry.ParseReference(raw)
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if err != nil {
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return result, err
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}
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result.Registry = result.orasReference.Registry
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result.Repository = result.orasReference.Repository
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result.Tag = result.orasReference.Reference
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return result, nil
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}
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func (r *reference) String() string {
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if r.Tag == "" {
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return r.orasReference.String() + "@" + r.Digest
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}
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return r.orasReference.String()
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}
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