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359 lines
11 KiB
359 lines
11 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 uploader
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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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"os/exec"
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"path"
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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/process"
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"code.gitea.io/gitea/modules/setting"
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"github.com/Unknwon/com"
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)
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// TemporaryUploadRepository is a type to wrap our upload repositories
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type TemporaryUploadRepository struct {
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repo *models.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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timeStr := com.ToStr(time.Now().Nanosecond()) // SHOULD USE SOMETHING UNIQUE
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basePath := path.Join(models.LocalCopyPath(), "upload-"+timeStr+".git")
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if err := os.MkdirAll(path.Dir(basePath), os.ModePerm); err != nil {
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return nil, fmt.Errorf("Failed to create dir %s: %v", basePath, 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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if _, err := os.Stat(t.basePath); !os.IsNotExist(err) {
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os.RemoveAll(t.basePath)
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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 _, stderr, err := process.GetManager().ExecTimeout(5*time.Minute,
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fmt.Sprintf("Clone (git clone -s --bare): %s", t.basePath),
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"git", "clone", "-s", "--bare", "-b", branch, t.repo.RepoPath(), t.basePath); err != nil {
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return fmt.Errorf("Clone: %v %s", err, stderr)
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}
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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 _, stderr, err := process.GetManager().ExecDir(5*time.Minute,
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t.basePath,
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fmt.Sprintf("SetDefaultIndex (git read-tree HEAD): %s", t.basePath),
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"git", "read-tree", "HEAD"); err != nil {
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return fmt.Errorf("SetDefaultIndex: %v %s", err, stderr)
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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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timeout := 5 * time.Minute
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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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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cmd := exec.CommandContext(ctx, "git", cmdArgs...)
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desc := fmt.Sprintf("lsFiles: (git ls-files) %v", cmdArgs)
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cmd.Dir = t.basePath
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cmd.Stdout = stdOut
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cmd.Stderr = stdErr
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if err := cmd.Start(); err != nil {
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return nil, fmt.Errorf("exec(%s) failed: %v(%v)", desc, err, ctx.Err())
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}
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pid := process.GetManager().Add(desc, cmd)
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err := cmd.Wait()
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process.GetManager().Remove(pid)
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if err != nil {
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err = fmt.Errorf("exec(%d:%s) failed: %v(%v) stdout: %v stderr: %v", pid, desc, err, ctx.Err(), stdOut, stdErr)
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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, err
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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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timeout := 5 * time.Minute
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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cmdArgs := []string{"update-index", "--remove", "-z", "--index-info"}
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cmd := exec.CommandContext(ctx, "git", cmdArgs...)
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desc := fmt.Sprintf("removeFilesFromIndex: (git update-index) %v", filenames)
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cmd.Dir = t.basePath
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cmd.Stdout = stdOut
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cmd.Stderr = stdErr
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cmd.Stdin = bytes.NewReader(stdIn.Bytes())
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if err := cmd.Start(); err != nil {
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return fmt.Errorf("exec(%s) failed: %v(%v)", desc, err, ctx.Err())
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}
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pid := process.GetManager().Add(desc, cmd)
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err := cmd.Wait()
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process.GetManager().Remove(pid)
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if err != nil {
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err = fmt.Errorf("exec(%d:%s) failed: %v(%v) stdout: %v stderr: %v", pid, desc, err, ctx.Err(), stdOut, stdErr)
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}
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return err
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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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timeout := 5 * time.Minute
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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hashCmd := exec.CommandContext(ctx, "git", "hash-object", "-w", "--stdin")
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hashCmd.Dir = t.basePath
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hashCmd.Stdin = content
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stdOutBuffer := new(bytes.Buffer)
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stdErrBuffer := new(bytes.Buffer)
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hashCmd.Stdout = stdOutBuffer
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hashCmd.Stderr = stdErrBuffer
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desc := fmt.Sprintf("hashObject: (git hash-object)")
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if err := hashCmd.Start(); err != nil {
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return "", fmt.Errorf("git hash-object: %s", err)
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}
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pid := process.GetManager().Add(desc, hashCmd)
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err := hashCmd.Wait()
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process.GetManager().Remove(pid)
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if err != nil {
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err = fmt.Errorf("exec(%d:%s) failed: %v(%v) stdout: %v stderr: %v", pid, desc, err, ctx.Err(), stdOutBuffer, stdErrBuffer)
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return "", err
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}
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return strings.TrimSpace(stdOutBuffer.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 _, stderr, err := process.GetManager().ExecDir(5*time.Minute,
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t.basePath,
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fmt.Sprintf("addObjectToIndex (git update-index): %s", t.basePath),
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"git", "update-index", "--add", "--replace", "--cacheinfo", mode, objectHash, objectPath); err != nil {
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return fmt.Errorf("git update-index: %s", stderr)
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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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treeHash, stderr, err := process.GetManager().ExecDir(5*time.Minute,
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t.basePath,
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fmt.Sprintf("WriteTree (git write-tree): %s", t.basePath),
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"git", "write-tree")
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if err != nil {
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return "", fmt.Errorf("git write-tree: %s", stderr)
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}
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return strings.TrimSpace(treeHash), 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(doer *models.User, treeHash string, message string) (string, error) {
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commitTimeStr := time.Now().Format(time.UnixDate)
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sig := doer.NewGitSig()
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// FIXME: Should we add SSH_ORIGINAL_COMMAND to this
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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="+sig.Name,
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"GIT_AUTHOR_EMAIL="+sig.Email,
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"GIT_AUTHOR_DATE="+commitTimeStr,
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"GIT_COMMITTER_NAME="+sig.Name,
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"GIT_COMMITTER_EMAIL="+sig.Email,
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"GIT_COMMITTER_DATE="+commitTimeStr,
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)
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commitHash, stderr, err := process.GetManager().ExecDirEnv(5*time.Minute,
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t.basePath,
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fmt.Sprintf("commitTree (git commit-tree): %s", t.basePath),
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env,
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"git", "commit-tree", treeHash, "-p", "HEAD", "-m", message)
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if err != nil {
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return "", fmt.Errorf("git commit-tree: %s", stderr)
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}
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return strings.TrimSpace(commitHash), 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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isWiki := "false"
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if strings.HasSuffix(t.repo.Name, ".wiki") {
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isWiki = "true"
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}
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sig := doer.NewGitSig()
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// FIXME: Should we add SSH_ORIGINAL_COMMAND to this
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// Because calls hooks we need to pass in the environment
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env := append(os.Environ(),
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"GIT_AUTHOR_NAME="+sig.Name,
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"GIT_AUTHOR_EMAIL="+sig.Email,
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"GIT_COMMITTER_NAME="+sig.Name,
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"GIT_COMMITTER_EMAIL="+sig.Email,
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models.EnvRepoName+"="+t.repo.Name,
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models.EnvRepoUsername+"="+t.repo.OwnerName,
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models.EnvRepoIsWiki+"="+isWiki,
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models.EnvPusherName+"="+doer.Name,
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models.EnvPusherID+"="+fmt.Sprintf("%d", doer.ID),
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models.ProtectedBranchRepoID+"="+fmt.Sprintf("%d", t.repo.ID),
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)
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if _, stderr, err := process.GetManager().ExecDirEnv(5*time.Minute,
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t.basePath,
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fmt.Sprintf("actuallyPush (git push): %s", t.basePath),
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env,
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"git", "push", t.repo.RepoPath(), strings.TrimSpace(commitHash)+":refs/heads/"+strings.TrimSpace(branch)); err != nil {
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return fmt.Errorf("git push: %s", stderr)
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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() (diff *models.Diff, err error) {
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timeout := 5 * time.Minute
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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stdErr := new(bytes.Buffer)
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cmd := exec.CommandContext(ctx, "git", "diff-index", "--cached", "-p", "HEAD")
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cmd.Dir = t.basePath
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cmd.Stderr = stdErr
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stdout, err := cmd.StdoutPipe()
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if err != nil {
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return nil, fmt.Errorf("StdoutPipe: %v stderr %s", err, stdErr.String())
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}
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if err = cmd.Start(); err != nil {
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return nil, fmt.Errorf("Start: %v stderr %s", err, stdErr.String())
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}
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pid := process.GetManager().Add(fmt.Sprintf("diffIndex [repo_path: %s]", t.repo.RepoPath()), cmd)
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defer process.GetManager().Remove(pid)
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diff, err = models.ParsePatch(setting.Git.MaxGitDiffLines, setting.Git.MaxGitDiffLineCharacters, setting.Git.MaxGitDiffFiles, stdout)
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if err != nil {
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return nil, fmt.Errorf("ParsePatch: %v", err)
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}
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if err = cmd.Wait(); err != nil {
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return nil, fmt.Errorf("Wait: %v", 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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stdOut := new(bytes.Buffer)
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stdErr := new(bytes.Buffer)
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timeout := 5 * time.Minute
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ctx, cancel := context.WithTimeout(context.Background(), timeout)
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defer cancel()
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cmdArgs := []string{"check-attr", "-z", attribute, "--cached", "--"}
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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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cmd := exec.CommandContext(ctx, "git", cmdArgs...)
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desc := fmt.Sprintf("checkAttr: (git check-attr) %s %v", attribute, cmdArgs)
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cmd.Dir = t.basePath
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cmd.Stdout = stdOut
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cmd.Stderr = stdErr
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if err := cmd.Start(); err != nil {
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return nil, fmt.Errorf("exec(%s) failed: %v(%v)", desc, err, ctx.Err())
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}
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pid := process.GetManager().Add(desc, cmd)
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err := cmd.Wait()
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process.GetManager().Remove(pid)
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if err != nil {
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err = fmt.Errorf("exec(%d:%s) failed: %v(%v) stdout: %v stderr: %v", pid, desc, err, ctx.Err(), stdOut, stdErr)
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return nil, err
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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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