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https://github.com/go-gitea/gitea
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0db554fa63
To make it more flexible and support SSH signature. The existing tests are not changed, there are also tests covering `parseTagRef` which also calls `parsePayloadSignature` now. Add some new tests to `Test_parseTagData`
121 lines
3.0 KiB
Go
121 lines
3.0 KiB
Go
// Copyright 2015 The Gogs Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package git
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import (
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"bytes"
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"sort"
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"code.gitea.io/gitea/modules/util"
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)
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// Tag represents a Git tag.
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type Tag struct {
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Name string
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ID ObjectID
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Object ObjectID // The id of this commit object
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Type string
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Tagger *Signature
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Message string
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Signature *CommitSignature
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}
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// Commit return the commit of the tag reference
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func (tag *Tag) Commit(gitRepo *Repository) (*Commit, error) {
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return gitRepo.getCommit(tag.Object)
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}
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func parsePayloadSignature(data []byte, messageStart int) (payload, msg, sign string) {
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pos := messageStart
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signStart, signEnd := -1, -1
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for {
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eol := bytes.IndexByte(data[pos:], '\n')
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if eol < 0 {
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break
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}
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line := data[pos : pos+eol]
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signType, hasPrefix := bytes.CutPrefix(line, []byte("-----BEGIN "))
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signType, hasSuffix := bytes.CutSuffix(signType, []byte(" SIGNATURE-----"))
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if hasPrefix && hasSuffix {
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signEndBytes := append([]byte("\n-----END "), signType...)
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signEndBytes = append(signEndBytes, []byte(" SIGNATURE-----")...)
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signEnd = bytes.Index(data[pos:], signEndBytes)
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if signEnd != -1 {
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signStart = pos
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signEnd = pos + signEnd + len(signEndBytes)
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}
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}
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pos += eol + 1
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}
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if signStart != -1 && signEnd != -1 {
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msgEnd := max(messageStart, signStart-1)
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return string(data[:msgEnd]), string(data[messageStart:msgEnd]), string(data[signStart:signEnd])
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}
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return string(data), string(data[messageStart:]), ""
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}
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// Parse commit information from the (uncompressed) raw
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// data from the commit object.
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// \n\n separate headers from message
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func parseTagData(objectFormat ObjectFormat, data []byte) (*Tag, error) {
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tag := new(Tag)
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tag.ID = objectFormat.EmptyObjectID()
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tag.Object = objectFormat.EmptyObjectID()
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tag.Tagger = &Signature{}
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pos := 0
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for {
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eol := bytes.IndexByte(data[pos:], '\n')
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if eol == -1 {
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break // shouldn't happen, but could just tolerate it
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}
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if eol == 0 {
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pos++
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break // end of headers
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}
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line := data[pos : pos+eol]
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key, val, _ := bytes.Cut(line, []byte(" "))
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switch string(key) {
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case "object":
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id, err := NewIDFromString(string(val))
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if err != nil {
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return nil, err
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}
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tag.Object = id
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case "type":
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tag.Type = string(val) // A commit can have one or more parents
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case "tagger":
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tag.Tagger = parseSignatureFromCommitLine(util.UnsafeBytesToString(val))
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}
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pos += eol + 1
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}
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payload, msg, sign := parsePayloadSignature(data, pos)
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tag.Message = msg
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if len(sign) > 0 {
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tag.Signature = &CommitSignature{Signature: sign, Payload: payload}
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}
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return tag, nil
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}
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type tagSorter []*Tag
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func (ts tagSorter) Len() int {
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return len([]*Tag(ts))
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}
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func (ts tagSorter) Less(i, j int) bool {
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return []*Tag(ts)[i].Tagger.When.After([]*Tag(ts)[j].Tagger.When)
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}
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func (ts tagSorter) Swap(i, j int) {
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[]*Tag(ts)[i], []*Tag(ts)[j] = []*Tag(ts)[j], []*Tag(ts)[i]
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}
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// sortTagsByTime
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func sortTagsByTime(tags []*Tag) {
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sorter := tagSorter(tags)
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sort.Sort(sorter)
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}
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