722a7c902d
In investigating #7947 it has become clear that the storage component of go-git repositories needs closing. This PR adds this Close function and adds the Close functions as necessary. In TransferOwnership the ctx.Repo.GitRepo is closed if it is open to help prevent the risk of multiple open files. Fixes #7947
358 lines
13 KiB
Go
358 lines
13 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package repofiles
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import (
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"bytes"
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"context"
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"fmt"
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"io"
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"os"
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"regexp"
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"strings"
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"time"
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"code.gitea.io/gitea/models"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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"code.gitea.io/gitea/services/gitdiff"
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"github.com/mcuadros/go-version"
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)
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// TemporaryUploadRepository is a type to wrap our upload repositories as a shallow clone
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type TemporaryUploadRepository struct {
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repo *models.Repository
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gitRepo *git.Repository
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basePath string
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}
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// NewTemporaryUploadRepository creates a new temporary upload repository
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func NewTemporaryUploadRepository(repo *models.Repository) (*TemporaryUploadRepository, error) {
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basePath, err := models.CreateTemporaryPath("upload")
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if err != nil {
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return nil, err
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}
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t := &TemporaryUploadRepository{repo: repo, basePath: basePath}
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return t, nil
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}
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// Close the repository cleaning up all files
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func (t *TemporaryUploadRepository) Close() {
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defer t.gitRepo.Close()
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if err := models.RemoveTemporaryPath(t.basePath); err != nil {
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log.Error("Failed to remove temporary path %s: %v", t.basePath, err)
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}
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}
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// Clone the base repository to our path and set branch as the HEAD
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func (t *TemporaryUploadRepository) Clone(branch string) error {
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if _, err := git.NewCommand("clone", "-s", "--bare", "-b", branch, t.repo.RepoPath(), t.basePath).Run(); err != nil {
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stderr := err.Error()
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if matched, _ := regexp.MatchString(".*Remote branch .* not found in upstream origin.*", stderr); matched {
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return git.ErrBranchNotExist{
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Name: branch,
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}
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} else if matched, _ := regexp.MatchString(".* repository .* does not exist.*", stderr); matched {
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return models.ErrRepoNotExist{
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ID: t.repo.ID,
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UID: t.repo.OwnerID,
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OwnerName: t.repo.OwnerName,
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Name: t.repo.Name,
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}
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} else {
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return fmt.Errorf("Clone: %v %s", err, stderr)
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}
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}
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gitRepo, err := git.OpenRepository(t.basePath)
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if err != nil {
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return err
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}
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t.gitRepo = gitRepo
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return nil
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}
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// SetDefaultIndex sets the git index to our HEAD
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func (t *TemporaryUploadRepository) SetDefaultIndex() error {
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if _, err := git.NewCommand("read-tree", "HEAD").RunInDir(t.basePath); err != nil {
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return fmt.Errorf("SetDefaultIndex: %v", err)
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}
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return nil
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}
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// LsFiles checks if the given filename arguments are in the index
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func (t *TemporaryUploadRepository) LsFiles(filenames ...string) ([]string, error) {
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stdOut := new(bytes.Buffer)
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stdErr := new(bytes.Buffer)
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cmdArgs := []string{"ls-files", "-z", "--"}
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for _, arg := range filenames {
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if arg != "" {
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cmdArgs = append(cmdArgs, arg)
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}
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}
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if err := git.NewCommand(cmdArgs...).RunInDirPipeline(t.basePath, stdOut, stdErr); err != nil {
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log.Error("Unable to run git ls-files for temporary repo: %s (%s) Error: %v\nstdout: %s\nstderr: %s", t.repo.FullName(), t.basePath, err, stdOut.String(), stdErr.String())
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err = fmt.Errorf("Unable to run git ls-files for temporary repo of: %s Error: %v\nstdout: %s\nstderr: %s", t.repo.FullName(), err, stdOut.String(), stdErr.String())
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return nil, err
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}
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filelist := make([]string, len(filenames))
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for _, line := range bytes.Split(stdOut.Bytes(), []byte{'\000'}) {
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filelist = append(filelist, string(line))
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}
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return filelist, nil
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}
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// RemoveFilesFromIndex removes the given files from the index
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func (t *TemporaryUploadRepository) RemoveFilesFromIndex(filenames ...string) error {
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stdOut := new(bytes.Buffer)
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stdErr := new(bytes.Buffer)
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stdIn := new(bytes.Buffer)
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for _, file := range filenames {
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if file != "" {
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stdIn.WriteString("0 0000000000000000000000000000000000000000\t")
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stdIn.WriteString(file)
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stdIn.WriteByte('\000')
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}
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}
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if err := git.NewCommand("update-index", "--remove", "-z", "--index-info").RunInDirFullPipeline(t.basePath, stdOut, stdErr, stdIn); err != nil {
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log.Error("Unable to update-index for temporary repo: %s (%s) Error: %v\nstdout: %s\nstderr: %s", t.repo.FullName(), t.basePath, err, stdOut.String(), stdErr.String())
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return fmt.Errorf("Unable to update-index for temporary repo: %s Error: %v\nstdout: %s\nstderr: %s", t.repo.FullName(), err, stdOut.String(), stdErr.String())
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}
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return nil
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}
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// HashObject writes the provided content to the object db and returns its hash
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func (t *TemporaryUploadRepository) HashObject(content io.Reader) (string, error) {
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stdOut := new(bytes.Buffer)
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stdErr := new(bytes.Buffer)
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if err := git.NewCommand("hash-object", "-w", "--stdin").RunInDirFullPipeline(t.basePath, stdOut, stdErr, content); err != nil {
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log.Error("Unable to hash-object to temporary repo: %s (%s) Error: %v\nstdout: %s\nstderr: %s", t.repo.FullName(), t.basePath, err, stdOut.String(), stdErr.String())
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return "", fmt.Errorf("Unable to hash-object to temporary repo: %s Error: %v\nstdout: %s\nstderr: %s", t.repo.FullName(), err, stdOut.String(), stdErr.String())
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}
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return strings.TrimSpace(stdOut.String()), nil
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}
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// AddObjectToIndex adds the provided object hash to the index with the provided mode and path
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func (t *TemporaryUploadRepository) AddObjectToIndex(mode, objectHash, objectPath string) error {
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if _, err := git.NewCommand("update-index", "--add", "--replace", "--cacheinfo", mode, objectHash, objectPath).RunInDir(t.basePath); err != nil {
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stderr := err.Error()
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if matched, _ := regexp.MatchString(".*Invalid path '.*", stderr); matched {
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return models.ErrFilePathInvalid{
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Message: objectPath,
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Path: objectPath,
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}
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}
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log.Error("Unable to add object to index: %s %s %s in temporary repo %s(%s) Error: %v", mode, objectHash, objectPath, t.repo.FullName(), t.basePath, err)
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return fmt.Errorf("Unable to add object to index at %s in temporary repo %s Error: %v", objectPath, t.repo.FullName(), err)
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}
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return nil
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}
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// WriteTree writes the current index as a tree to the object db and returns its hash
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func (t *TemporaryUploadRepository) WriteTree() (string, error) {
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stdout, err := git.NewCommand("write-tree").RunInDir(t.basePath)
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if err != nil {
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log.Error("Unable to write tree in temporary repo: %s(%s): Error: %v", t.repo.FullName(), t.basePath, err)
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return "", fmt.Errorf("Unable to write-tree in temporary repo for: %s Error: %v", t.repo.FullName(), err)
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}
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return strings.TrimSpace(stdout), nil
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}
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// GetLastCommit gets the last commit ID SHA of the repo
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func (t *TemporaryUploadRepository) GetLastCommit() (string, error) {
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return t.GetLastCommitByRef("HEAD")
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}
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// GetLastCommitByRef gets the last commit ID SHA of the repo by ref
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func (t *TemporaryUploadRepository) GetLastCommitByRef(ref string) (string, error) {
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if ref == "" {
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ref = "HEAD"
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}
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stdout, err := git.NewCommand("rev-parse", ref).RunInDir(t.basePath)
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if err != nil {
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log.Error("Unable to get last ref for %s in temporary repo: %s(%s): Error: %v", ref, t.repo.FullName(), t.basePath, err)
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return "", fmt.Errorf("Unable to rev-parse %s in temporary repo for: %s Error: %v", ref, t.repo.FullName(), err)
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}
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return strings.TrimSpace(stdout), nil
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}
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// CommitTree creates a commit from a given tree for the user with provided message
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func (t *TemporaryUploadRepository) CommitTree(author, committer *models.User, treeHash string, message string) (string, error) {
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commitTimeStr := time.Now().Format(time.RFC3339)
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authorSig := author.NewGitSig()
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committerSig := committer.NewGitSig()
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binVersion, err := git.BinVersion()
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if err != nil {
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return "", fmt.Errorf("Unable to get git version: %v", err)
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}
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// Because this may call hooks we should pass in the environment
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env := append(os.Environ(),
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"GIT_AUTHOR_NAME="+authorSig.Name,
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"GIT_AUTHOR_EMAIL="+authorSig.Email,
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"GIT_AUTHOR_DATE="+commitTimeStr,
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"GIT_COMMITTER_NAME="+committerSig.Name,
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"GIT_COMMITTER_EMAIL="+committerSig.Email,
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"GIT_COMMITTER_DATE="+commitTimeStr,
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)
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messageBytes := new(bytes.Buffer)
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_, _ = messageBytes.WriteString(message)
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_, _ = messageBytes.WriteString("\n")
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args := []string{"commit-tree", treeHash, "-p", "HEAD"}
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// Determine if we should sign
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if version.Compare(binVersion, "1.7.9", ">=") {
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sign, keyID := t.repo.SignCRUDAction(author, t.basePath, "HEAD")
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if sign {
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args = append(args, "-S"+keyID)
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} else if version.Compare(binVersion, "2.0.0", ">=") {
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args = append(args, "--no-gpg-sign")
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}
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}
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stdout := new(bytes.Buffer)
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stderr := new(bytes.Buffer)
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if err := git.NewCommand(args...).RunInDirTimeoutEnvFullPipeline(env, -1, t.basePath, stdout, stderr, messageBytes); err != nil {
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log.Error("Unable to commit-tree in temporary repo: %s (%s) Error: %v\nStdout: %s\nStderr: %s",
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t.repo.FullName(), t.basePath, err, stdout, stderr)
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return "", fmt.Errorf("Unable to commit-tree in temporary repo: %s Error: %v\nStdout: %s\nStderr: %s",
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t.repo.FullName(), err, stdout, stderr)
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}
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return strings.TrimSpace(stdout.String()), nil
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}
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// Push the provided commitHash to the repository branch by the provided user
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func (t *TemporaryUploadRepository) Push(doer *models.User, commitHash string, branch string) error {
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// Because calls hooks we need to pass in the environment
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env := models.PushingEnvironment(doer, t.repo)
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if _, err := git.NewCommand("push", t.repo.RepoPath(), strings.TrimSpace(commitHash)+":refs/heads/"+strings.TrimSpace(branch)).RunInDirWithEnv(t.basePath, env); err != nil {
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log.Error("Unable to push back to repo from temporary repo: %s (%s) Error: %v",
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t.repo.FullName(), t.basePath, err)
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return fmt.Errorf("Unable to push back to repo from temporary repo: %s (%s) Error: %v",
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t.repo.FullName(), t.basePath, err)
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}
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return nil
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}
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// DiffIndex returns a Diff of the current index to the head
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func (t *TemporaryUploadRepository) DiffIndex() (*gitdiff.Diff, error) {
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stdoutReader, stdoutWriter, err := os.Pipe()
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if err != nil {
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log.Error("Unable to open stdout pipe: %v", err)
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return nil, fmt.Errorf("Unable to open stdout pipe: %v", err)
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}
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defer func() {
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_ = stdoutReader.Close()
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_ = stdoutWriter.Close()
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}()
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stderr := new(bytes.Buffer)
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var diff *gitdiff.Diff
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var finalErr error
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if err := git.NewCommand("diff-index", "--cached", "-p", "HEAD").
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RunInDirTimeoutEnvFullPipelineFunc(nil, 30*time.Second, t.basePath, stdoutWriter, stderr, nil, func(ctx context.Context, cancel context.CancelFunc) {
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_ = stdoutWriter.Close()
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diff, finalErr = gitdiff.ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, stdoutReader)
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if finalErr != nil {
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log.Error("ParsePatch: %v", finalErr)
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cancel()
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}
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_ = stdoutReader.Close()
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}); err != nil {
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if finalErr != nil {
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log.Error("Unable to ParsePatch in temporary repo %s (%s). Error: %v", t.repo.FullName(), t.basePath, finalErr)
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return nil, finalErr
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}
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log.Error("Unable to run diff-index pipeline in temporary repo %s (%s). Error: %v\nStderr: %s",
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t.repo.FullName(), t.basePath, err, stderr)
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return nil, fmt.Errorf("Unable to run diff-index pipeline in temporary repo %s. Error: %v\nStderr: %s",
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t.repo.FullName(), err, stderr)
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}
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return diff, nil
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}
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// CheckAttribute checks the given attribute of the provided files
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func (t *TemporaryUploadRepository) CheckAttribute(attribute string, args ...string) (map[string]map[string]string, error) {
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binVersion, err := git.BinVersion()
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if err != nil {
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log.Error("Error retrieving git version: %v", err)
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return nil, err
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}
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stdout := new(bytes.Buffer)
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stderr := new(bytes.Buffer)
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cmdArgs := []string{"check-attr", "-z", attribute}
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// git check-attr --cached first appears in git 1.7.8
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if version.Compare(binVersion, "1.7.8", ">=") {
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cmdArgs = append(cmdArgs, "--cached")
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}
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cmdArgs = append(cmdArgs, "--")
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for _, arg := range args {
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if arg != "" {
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cmdArgs = append(cmdArgs, arg)
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}
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}
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if err := git.NewCommand(cmdArgs...).RunInDirPipeline(t.basePath, stdout, stderr); err != nil {
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log.Error("Unable to check-attr in temporary repo: %s (%s) Error: %v\nStdout: %s\nStderr: %s",
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t.repo.FullName(), t.basePath, err, stdout, stderr)
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return nil, fmt.Errorf("Unable to check-attr in temporary repo: %s Error: %v\nStdout: %s\nStderr: %s",
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t.repo.FullName(), err, stdout, stderr)
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}
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fields := bytes.Split(stdout.Bytes(), []byte{'\000'})
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if len(fields)%3 != 1 {
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return nil, fmt.Errorf("Wrong number of fields in return from check-attr")
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}
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var name2attribute2info = make(map[string]map[string]string)
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for i := 0; i < (len(fields) / 3); i++ {
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filename := string(fields[3*i])
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attribute := string(fields[3*i+1])
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info := string(fields[3*i+2])
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attribute2info := name2attribute2info[filename]
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if attribute2info == nil {
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attribute2info = make(map[string]string)
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}
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attribute2info[attribute] = info
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name2attribute2info[filename] = attribute2info
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}
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return name2attribute2info, err
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}
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// GetBranchCommit Gets the commit object of the given branch
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func (t *TemporaryUploadRepository) GetBranchCommit(branch string) (*git.Commit, error) {
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if t.gitRepo == nil {
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return nil, fmt.Errorf("repository has not been cloned")
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}
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return t.gitRepo.GetBranchCommit(branch)
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}
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// GetCommit Gets the commit object of the given commit ID
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func (t *TemporaryUploadRepository) GetCommit(commitID string) (*git.Commit, error) {
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if t.gitRepo == nil {
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return nil, fmt.Errorf("repository has not been cloned")
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}
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return t.gitRepo.GetCommit(commitID)
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}
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