mirror of
https://github.com/go-gitea/gitea.git
synced 2024-12-21 12:25:09 +01:00
403 lines
15 KiB
Go
403 lines
15 KiB
Go
// Copyright 2019 The Gitea Authors. All rights reserved.
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// SPDX-License-Identifier: MIT
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package files
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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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repo_model "code.gitea.io/gitea/models/repo"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/log"
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repo_module "code.gitea.io/gitea/modules/repository"
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"code.gitea.io/gitea/modules/setting"
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asymkey_service "code.gitea.io/gitea/services/asymkey"
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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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ctx context.Context
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repo *repo_model.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(ctx context.Context, repo *repo_model.Repository) (*TemporaryUploadRepository, error) {
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basePath, err := repo_module.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{ctx: ctx, 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 := repo_module.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, bare bool) error {
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cmd := git.NewCommand(t.ctx, "clone", "-s", "-b").AddDynamicArguments(branch, t.repo.RepoPath(), t.basePath)
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if bare {
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cmd.AddArguments("--bare")
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}
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if _, _, err := cmd.RunStdString(nil); 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 repo_model.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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}
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return fmt.Errorf("Clone: %w %s", err, stderr)
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}
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gitRepo, err := git.OpenRepository(t.ctx, 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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// Init the repository
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func (t *TemporaryUploadRepository) Init(objectFormatName string) error {
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if err := git.InitRepository(t.ctx, t.basePath, false, objectFormatName); err != nil {
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return err
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}
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gitRepo, err := git.OpenRepository(t.ctx, 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(t.ctx, "read-tree", "HEAD").RunStdString(&git.RunOpts{Dir: t.basePath}); err != nil {
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return fmt.Errorf("SetDefaultIndex: %w", err)
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}
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return nil
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}
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// RefreshIndex looks at the current index and checks to see if merges or updates are needed by checking stat() information.
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func (t *TemporaryUploadRepository) RefreshIndex() error {
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if _, _, err := git.NewCommand(t.ctx, "update-index", "--refresh").RunStdString(&git.RunOpts{Dir: t.basePath}); err != nil {
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return fmt.Errorf("RefreshIndex: %w", 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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if err := git.NewCommand(t.ctx, "ls-files", "-z").AddDashesAndList(filenames...).
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Run(&git.RunOpts{
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Dir: t.basePath,
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Stdout: stdOut,
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Stderr: stdErr,
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}); 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: %w\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, 0, 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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objFmt, err := t.gitRepo.GetObjectFormat()
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if err != nil {
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return fmt.Errorf("unable to get object format for temporary repo: %q, error: %w", t.repo.FullName(), 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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stdIn := new(bytes.Buffer)
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for _, file := range filenames {
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if file != "" {
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// man git-update-index: input syntax (1): mode SP sha1 TAB path
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// mode=0 means "remove from index", then hash part "does not matter as long as it is well formatted."
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_, _ = fmt.Fprintf(stdIn, "0 %s\t%s\x00", objFmt.EmptyObjectID(), file)
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}
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}
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if err := git.NewCommand(t.ctx, "update-index", "--remove", "-z", "--index-info").
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Run(&git.RunOpts{
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Dir: t.basePath,
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Stdin: stdIn,
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Stdout: stdOut,
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Stderr: stdErr,
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}); err != nil {
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return fmt.Errorf("unable to update-index for temporary repo: %q, error: %w\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(t.ctx, "hash-object", "-w", "--stdin").
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Run(&git.RunOpts{
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Dir: t.basePath,
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Stdin: content,
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Stdout: stdOut,
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Stderr: stdErr,
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}); 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: %w\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(t.ctx, "update-index", "--add", "--replace", "--cacheinfo").AddDynamicArguments(mode, objectHash, objectPath).RunStdString(&git.RunOpts{Dir: 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: %w", 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(t.ctx, "write-tree").RunStdString(&git.RunOpts{Dir: 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: %w", 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(t.ctx, "rev-parse").AddDynamicArguments(ref).RunStdString(&git.RunOpts{Dir: 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: %w", 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(parent string, author, committer *user_model.User, treeHash, message string, signoff bool) (string, error) {
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return t.CommitTreeWithDate(parent, author, committer, treeHash, message, signoff, 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(parent string, author, committer *user_model.User, treeHash, message string, signoff bool, authorDate, committerDate time.Time) (string, error) {
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authorSig := author.NewGitSig()
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committerSig := committer.NewGitSig()
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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_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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cmdCommitTree := git.NewCommand(t.ctx, "commit-tree").AddDynamicArguments(treeHash)
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if parent != "" {
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cmdCommitTree.AddOptionValues("-p", parent)
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}
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var sign bool
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var keyID string
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var signer *git.Signature
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if parent != "" {
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sign, keyID, signer, _ = asymkey_service.SignCRUDAction(t.ctx, t.repo.RepoPath(), author, t.basePath, parent)
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} else {
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sign, keyID, signer, _ = asymkey_service.SignInitialCommit(t.ctx, t.repo.RepoPath(), author)
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}
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if sign {
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cmdCommitTree.AddOptionFormat("-S%s", keyID)
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if t.repo.GetTrustModel() == repo_model.CommitterTrustModel || t.repo.GetTrustModel() == repo_model.CollaboratorCommitterTrustModel {
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if committerSig.Name != authorSig.Name || committerSig.Email != authorSig.Email {
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// Add trailers
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_, _ = messageBytes.WriteString("\n")
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_, _ = messageBytes.WriteString("Co-authored-by: ")
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_, _ = messageBytes.WriteString(committerSig.String())
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_, _ = messageBytes.WriteString("\n")
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_, _ = messageBytes.WriteString("Co-committed-by: ")
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_, _ = messageBytes.WriteString(committerSig.String())
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_, _ = messageBytes.WriteString("\n")
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}
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committerSig = signer
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}
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} else {
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cmdCommitTree.AddArguments("--no-gpg-sign")
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}
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if signoff {
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// Signed-off-by
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_, _ = messageBytes.WriteString("\n")
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_, _ = messageBytes.WriteString("Signed-off-by: ")
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_, _ = messageBytes.WriteString(committerSig.String())
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}
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env = append(env,
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"GIT_COMMITTER_NAME="+committerSig.Name,
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"GIT_COMMITTER_EMAIL="+committerSig.Email,
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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 := cmdCommitTree.
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Run(&git.RunOpts{
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Env: env,
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Dir: t.basePath,
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Stdin: messageBytes,
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Stdout: stdout,
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Stderr: stderr,
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}); 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: %w\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 *user_model.User, commitHash, branch string) error {
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// Because calls hooks we need to pass in the environment
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env := repo_module.PushingEnvironment(doer, t.repo)
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if err := git.Push(t.ctx, t.basePath, git.PushOptions{
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Remote: t.repo.RepoPath(),
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Branch: strings.TrimSpace(commitHash) + ":" + git.BranchPrefix + 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: %w", 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(t.ctx, "diff-index", "--src-prefix=\\a/", "--dst-prefix=\\b/", "--cached", "-p", "HEAD").
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Run(&git.RunOpts{
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Timeout: 30 * time.Second,
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Dir: t.basePath,
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Stdout: stdoutWriter,
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Stderr: stderr,
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PipelineFunc: func(ctx context.Context, cancel context.CancelFunc) error {
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_ = stdoutWriter.Close()
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diff, finalErr = gitdiff.ParsePatch(t.ctx, 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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},
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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: %w\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.ctx, t.basePath, git.TrustedCmdArgs{"--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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// 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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