A fork of Gitea (see branch `mj`) adding Majority Judgment Polls 𐄷 over Issues and Merge Requests. https://git.mieuxvoter.fr
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// Copyright 2019 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package repofiles
import (
"bytes"
"context"
"fmt"
"io"
"os"
"regexp"
"strings"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/services/gitdiff"
)
// TemporaryUploadRepository is a type to wrap our upload repositories as a shallow clone
type TemporaryUploadRepository struct {
repo *models.Repository
gitRepo *git.Repository
basePath string
}
// NewTemporaryUploadRepository creates a new temporary upload repository
func NewTemporaryUploadRepository(repo *models.Repository) (*TemporaryUploadRepository, error) {
basePath, err := models.CreateTemporaryPath("upload")
if err != nil {
return nil, err
}
t := &TemporaryUploadRepository{repo: repo, basePath: basePath}
return t, nil
}
// Close the repository cleaning up all files
func (t *TemporaryUploadRepository) Close() {
defer t.gitRepo.Close()
if err := models.RemoveTemporaryPath(t.basePath); err != nil {
log.Error("Failed to remove temporary path %s: %v", t.basePath, err)
}
}
// Clone the base repository to our path and set branch as the HEAD
func (t *TemporaryUploadRepository) Clone(branch string) error {
if _, err := git.NewCommand("clone", "-s", "--bare", "-b", branch, t.repo.RepoPath(), t.basePath).Run(); err != nil {
stderr := err.Error()
if matched, _ := regexp.MatchString(".*Remote branch .* not found in upstream origin.*", stderr); matched {
return git.ErrBranchNotExist{
Name: branch,
}
} else if matched, _ := regexp.MatchString(".* repository .* does not exist.*", stderr); matched {
return models.ErrRepoNotExist{
ID: t.repo.ID,
UID: t.repo.OwnerID,
OwnerName: t.repo.OwnerName,
Name: t.repo.Name,
}
} else {
return fmt.Errorf("Clone: %v %s", err, stderr)
}
}
gitRepo, err := git.OpenRepository(t.basePath)
if err != nil {
return err
}
t.gitRepo = gitRepo
return nil
}
// SetDefaultIndex sets the git index to our HEAD
func (t *TemporaryUploadRepository) SetDefaultIndex() error {
if _, err := git.NewCommand("read-tree", "HEAD").RunInDir(t.basePath); err != nil {
return fmt.Errorf("SetDefaultIndex: %v", err)
}
return nil
}
// LsFiles checks if the given filename arguments are in the index
func (t *TemporaryUploadRepository) LsFiles(filenames ...string) ([]string, error) {
stdOut := new(bytes.Buffer)
stdErr := new(bytes.Buffer)
cmdArgs := []string{"ls-files", "-z", "--"}
for _, arg := range filenames {
if arg != "" {
cmdArgs = append(cmdArgs, arg)
}
}
if err := git.NewCommand(cmdArgs...).RunInDirPipeline(t.basePath, stdOut, stdErr); err != nil {
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())
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())
return nil, err
}
filelist := make([]string, len(filenames))
for _, line := range bytes.Split(stdOut.Bytes(), []byte{'\000'}) {
filelist = append(filelist, string(line))
}
return filelist, nil
}
// RemoveFilesFromIndex removes the given files from the index
func (t *TemporaryUploadRepository) RemoveFilesFromIndex(filenames ...string) error {
stdOut := new(bytes.Buffer)
stdErr := new(bytes.Buffer)
stdIn := new(bytes.Buffer)
for _, file := range filenames {
if file != "" {
stdIn.WriteString("0 0000000000000000000000000000000000000000\t")
stdIn.WriteString(file)
stdIn.WriteByte('\000')
}
}
if err := git.NewCommand("update-index", "--remove", "-z", "--index-info").RunInDirFullPipeline(t.basePath, stdOut, stdErr, stdIn); err != nil {
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())
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())
}
return nil
}
// HashObject writes the provided content to the object db and returns its hash
func (t *TemporaryUploadRepository) HashObject(content io.Reader) (string, error) {
stdOut := new(bytes.Buffer)
stdErr := new(bytes.Buffer)
if err := git.NewCommand("hash-object", "-w", "--stdin").RunInDirFullPipeline(t.basePath, stdOut, stdErr, content); err != nil {
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())
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())
}
return strings.TrimSpace(stdOut.String()), nil
}
// AddObjectToIndex adds the provided object hash to the index with the provided mode and path
func (t *TemporaryUploadRepository) AddObjectToIndex(mode, objectHash, objectPath string) error {
if _, err := git.NewCommand("update-index", "--add", "--replace", "--cacheinfo", mode, objectHash, objectPath).RunInDir(t.basePath); err != nil {
stderr := err.Error()
if matched, _ := regexp.MatchString(".*Invalid path '.*", stderr); matched {
return models.ErrFilePathInvalid{
Message: objectPath,
Path: objectPath,
}
}
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)
return fmt.Errorf("Unable to add object to index at %s in temporary repo %s Error: %v", objectPath, t.repo.FullName(), err)
}
return nil
}
// WriteTree writes the current index as a tree to the object db and returns its hash
func (t *TemporaryUploadRepository) WriteTree() (string, error) {
stdout, err := git.NewCommand("write-tree").RunInDir(t.basePath)
if err != nil {
log.Error("Unable to write tree in temporary repo: %s(%s): Error: %v", t.repo.FullName(), t.basePath, err)
return "", fmt.Errorf("Unable to write-tree in temporary repo for: %s Error: %v", t.repo.FullName(), err)
}
return strings.TrimSpace(stdout), nil
}
// GetLastCommit gets the last commit ID SHA of the repo
func (t *TemporaryUploadRepository) GetLastCommit() (string, error) {
return t.GetLastCommitByRef("HEAD")
}
// GetLastCommitByRef gets the last commit ID SHA of the repo by ref
func (t *TemporaryUploadRepository) GetLastCommitByRef(ref string) (string, error) {
if ref == "" {
ref = "HEAD"
}
stdout, err := git.NewCommand("rev-parse", ref).RunInDir(t.basePath)
if err != nil {
log.Error("Unable to get last ref for %s in temporary repo: %s(%s): Error: %v", ref, t.repo.FullName(), t.basePath, err)
return "", fmt.Errorf("Unable to rev-parse %s in temporary repo for: %s Error: %v", ref, t.repo.FullName(), err)
}
return strings.TrimSpace(stdout), nil
}
// CommitTree creates a commit from a given tree for the user with provided message
func (t *TemporaryUploadRepository) CommitTree(author, committer *models.User, treeHash string, message string, signoff bool) (string, error) {
return t.CommitTreeWithDate(author, committer, treeHash, message, signoff, time.Now(), time.Now())
}
// CommitTreeWithDate creates a commit from a given tree for the user with provided message
func (t *TemporaryUploadRepository) CommitTreeWithDate(author, committer *models.User, treeHash string, message string, signoff bool, authorDate, committerDate time.Time) (string, error) {
authorSig := author.NewGitSig()
committerSig := committer.NewGitSig()
err := git.LoadGitVersion()
if err != nil {
return "", fmt.Errorf("Unable to get git version: %v", err)
}
// Because this may call hooks we should pass in the environment
env := append(os.Environ(),
"GIT_AUTHOR_NAME="+authorSig.Name,
"GIT_AUTHOR_EMAIL="+authorSig.Email,
"GIT_AUTHOR_DATE="+authorDate.Format(time.RFC3339),
"GIT_COMMITTER_DATE="+committerDate.Format(time.RFC3339),
)
messageBytes := new(bytes.Buffer)
_, _ = messageBytes.WriteString(message)
_, _ = messageBytes.WriteString("\n")
args := []string{"commit-tree", treeHash, "-p", "HEAD"}
// Determine if we should sign
if git.CheckGitVersionAtLeast("1.7.9") == nil {
sign, keyID, signer, _ := t.repo.SignCRUDAction(author, t.basePath, "HEAD")
if sign {
args = append(args, "-S"+keyID)
if t.repo.GetTrustModel() == models.CommitterTrustModel || t.repo.GetTrustModel() == models.CollaboratorCommitterTrustModel {
if committerSig.Name != authorSig.Name || committerSig.Email != authorSig.Email {
// Add trailers
_, _ = messageBytes.WriteString("\n")
_, _ = messageBytes.WriteString("Co-authored-by: ")
_, _ = messageBytes.WriteString(committerSig.String())
_, _ = messageBytes.WriteString("\n")
_, _ = messageBytes.WriteString("Co-committed-by: ")
_, _ = messageBytes.WriteString(committerSig.String())
_, _ = messageBytes.WriteString("\n")
}
committerSig = signer
}
} else if git.CheckGitVersionAtLeast("2.0.0") == nil {
args = append(args, "--no-gpg-sign")
}
}
if signoff {
// Signed-off-by
_, _ = messageBytes.WriteString("\n")
_, _ = messageBytes.WriteString("Signed-off-by: ")
_, _ = messageBytes.WriteString(committerSig.String())
}
env = append(env,
"GIT_COMMITTER_NAME="+committerSig.Name,
"GIT_COMMITTER_EMAIL="+committerSig.Email,
)
stdout := new(bytes.Buffer)
stderr := new(bytes.Buffer)
if err := git.NewCommand(args...).RunInDirTimeoutEnvFullPipeline(env, -1, t.basePath, stdout, stderr, messageBytes); err != nil {
log.Error("Unable to commit-tree in temporary repo: %s (%s) Error: %v\nStdout: %s\nStderr: %s",
t.repo.FullName(), t.basePath, err, stdout, stderr)
return "", fmt.Errorf("Unable to commit-tree in temporary repo: %s Error: %v\nStdout: %s\nStderr: %s",
t.repo.FullName(), err, stdout, stderr)
}
return strings.TrimSpace(stdout.String()), nil
}
// Push the provided commitHash to the repository branch by the provided user
func (t *TemporaryUploadRepository) Push(doer *models.User, commitHash string, branch string) error {
// Because calls hooks we need to pass in the environment
env := models.PushingEnvironment(doer, t.repo)
if err := git.Push(t.basePath, git.PushOptions{
Remote: t.repo.RepoPath(),
Branch: strings.TrimSpace(commitHash) + ":refs/heads/" + strings.TrimSpace(branch),
Env: env,
}); err != nil {
if git.IsErrPushOutOfDate(err) {
return err
} else if git.IsErrPushRejected(err) {
rejectErr := err.(*git.ErrPushRejected)
log.Info("Unable to push back to repo from temporary repo due to rejection: %s (%s)\nStdout: %s\nStderr: %s\nError: %v",
t.repo.FullName(), t.basePath, rejectErr.StdOut, rejectErr.StdErr, rejectErr.Err)
return err
}
log.Error("Unable to push back to repo from temporary repo: %s (%s)\nError: %v",
t.repo.FullName(), t.basePath, err)
return fmt.Errorf("Unable to push back to repo from temporary repo: %s (%s) Error: %v",
t.repo.FullName(), t.basePath, err)
}
return nil
}
// DiffIndex returns a Diff of the current index to the head
func (t *TemporaryUploadRepository) DiffIndex() (*gitdiff.Diff, error) {
stdoutReader, stdoutWriter, err := os.Pipe()
if err != nil {
log.Error("Unable to open stdout pipe: %v", err)
return nil, fmt.Errorf("Unable to open stdout pipe: %v", err)
}
defer func() {
_ = stdoutReader.Close()
_ = stdoutWriter.Close()
}()
stderr := new(bytes.Buffer)
var diff *gitdiff.Diff
var finalErr error
if err := git.NewCommand("diff-index", "--src-prefix=\\a/", "--dst-prefix=\\b/", "--cached", "-p", "HEAD").
RunInDirTimeoutEnvFullPipelineFunc(nil, 30*time.Second, t.basePath, stdoutWriter, stderr, nil, func(ctx context.Context, cancel context.CancelFunc) error {
_ = stdoutWriter.Close()
diff, finalErr = gitdiff.ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, stdoutReader)
if finalErr != nil {
log.Error("ParsePatch: %v", finalErr)
cancel()
}
_ = stdoutReader.Close()
return finalErr
}); err != nil {
if finalErr != nil {
log.Error("Unable to ParsePatch in temporary repo %s (%s). Error: %v", t.repo.FullName(), t.basePath, finalErr)
return nil, finalErr
}
log.Error("Unable to run diff-index pipeline in temporary repo %s (%s). Error: %v\nStderr: %s",
t.repo.FullName(), t.basePath, err, stderr)
return nil, fmt.Errorf("Unable to run diff-index pipeline in temporary repo %s. Error: %v\nStderr: %s",
t.repo.FullName(), err, stderr)
}
diff.NumFiles, diff.TotalAddition, diff.TotalDeletion, err = git.GetDiffShortStat(t.basePath, "--cached", "HEAD")
if err != nil {
return nil, err
}
return diff, nil
}
// GetBranchCommit Gets the commit object of the given branch
func (t *TemporaryUploadRepository) GetBranchCommit(branch string) (*git.Commit, error) {
if t.gitRepo == nil {
return nil, fmt.Errorf("repository has not been cloned")
}
return t.gitRepo.GetBranchCommit(branch)
}
// GetCommit Gets the commit object of the given commit ID
func (t *TemporaryUploadRepository) GetCommit(commitID string) (*git.Commit, error) {
if t.gitRepo == nil {
return nil, fmt.Errorf("repository has not been cloned")
}
return t.gitRepo.GetCommit(commitID)
}