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377 lines
14 KiB
377 lines
14 KiB
// 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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)
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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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return t.CommitTreeWithDate(author, committer, treeHash, message, time.Now(), time.Now())
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}
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// CommitTreeWithDate creates a commit from a given tree for the user with provided message
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func (t *TemporaryUploadRepository) CommitTreeWithDate(author, committer *models.User, treeHash string, message string, authorDate, committerDate time.Time) (string, error) {
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authorSig := author.NewGitSig()
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committerSig := committer.NewGitSig()
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err := git.LoadGitVersion()
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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="+authorDate.Format(time.RFC3339),
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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="+committerDate.Format(time.RFC3339),
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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 git.CheckGitVersionConstraint(">= 1.7.9") == nil {
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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 git.CheckGitVersionConstraint(">= 2.0.0") == nil {
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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.Push(t.basePath, git.PushOptions{
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Remote: t.repo.RepoPath(),
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Branch: strings.TrimSpace(commitHash) + ":refs/heads/" + strings.TrimSpace(branch),
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Env: env,
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}); err != nil {
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if git.IsErrPushOutOfDate(err) {
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return err
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} else if git.IsErrPushRejected(err) {
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rejectErr := err.(*git.ErrPushRejected)
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log.Info("Unable to push back to repo from temporary repo due to rejection: %s (%s)\nStdout: %s\nStderr: %s\nError: %v",
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t.repo.FullName(), t.basePath, rejectErr.StdOut, rejectErr.StdErr, rejectErr.Err)
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return err
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}
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log.Error("Unable to push back to repo from temporary repo: %s (%s)\nError: %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) error {
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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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return finalErr
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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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diff.NumFiles, diff.TotalAddition, diff.TotalDeletion, err = git.GetDiffShortStat(t.basePath, "--cached", "HEAD")
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if err != nil {
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return nil, err
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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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err := git.LoadGitVersion()
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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 git.CheckGitVersionConstraint(">= 1.7.8") == nil {
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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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