d6811baf88
Fixes #29101 Related #29298 Discard all read data to prevent misinterpreting existing data. Some discard calls were missing in error cases. --------- Co-authored-by: yp05327 <576951401@qq.com>
88 lines
1.8 KiB
Go
88 lines
1.8 KiB
Go
// Copyright 2020 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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//go:build !gogit
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package git
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import (
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"io"
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)
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func (repo *Repository) getTree(id ObjectID) (*Tree, error) {
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wr, rd, cancel := repo.CatFileBatch(repo.Ctx)
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defer cancel()
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_, _ = wr.Write([]byte(id.String() + "\n"))
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// ignore the SHA
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_, typ, size, err := ReadBatchLine(rd)
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if err != nil {
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return nil, err
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}
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switch typ {
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case "tag":
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resolvedID := id
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data, err := io.ReadAll(io.LimitReader(rd, size))
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if err != nil {
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return nil, err
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}
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tag, err := parseTagData(id.Type(), data)
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if err != nil {
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return nil, err
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}
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commit, err := tag.Commit(repo)
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if err != nil {
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return nil, err
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}
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commit.Tree.ResolvedID = resolvedID
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return &commit.Tree, nil
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case "commit":
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commit, err := CommitFromReader(repo, id, io.LimitReader(rd, size))
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if err != nil {
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return nil, err
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}
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if _, err := rd.Discard(1); err != nil {
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return nil, err
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}
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commit.Tree.ResolvedID = commit.ID
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return &commit.Tree, nil
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case "tree":
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tree := NewTree(repo, id)
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tree.ResolvedID = id
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tree.entries, err = catBatchParseTreeEntries(repo.objectFormat, tree, rd, size)
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if err != nil {
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return nil, err
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}
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tree.entriesParsed = true
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return tree, nil
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default:
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if err := DiscardFull(rd, size+1); err != nil {
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return nil, err
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}
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return nil, ErrNotExist{
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ID: id.String(),
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}
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}
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}
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// GetTree find the tree object in the repository.
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func (repo *Repository) GetTree(idStr string) (*Tree, error) {
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if len(idStr) != repo.objectFormat.FullLength() {
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res, err := repo.GetRefCommitID(idStr)
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if err != nil {
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return nil, err
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}
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if len(res) > 0 {
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idStr = res
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}
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}
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id, err := NewIDFromString(idStr)
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if err != nil {
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return nil, err
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}
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return repo.getTree(id)
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}
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