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forgejo/modules/git/repo_archive.go
Brecht Van Lommel 1167d523c4
Fix archive creating LFS hooks and breaking pull requests (#28848)
When LFS hooks are present in gitea-repositories, operations like git
push for creating a pull request fail. These repositories are not meant
to include LFS files or git push them, that is handled separately. And
so they should not have LFS hooks.

Installing git-lfs on some systems (like Debian Linux) will
automatically set up /etc/gitconfig to create LFS hooks in repositories.
For most git commands in Gitea this is not a problem, either because
they run on a temporary clone or the git command does not create LFS
hooks.

But one case where this happens is git archive for creating repository
archives. To fix that, add a GIT_CONFIG_NOSYSTEM=1 to disable using the
system configuration for that command.

According to a comment, GIT_CONFIG_NOSYSTEM is not used for all git
commands because the system configuration can be intentionally set up
for Gitea to use.

Resolves #19810, #21148
2024-01-19 05:49:18 +00:00

80 lines
1.6 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2020 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package git
import (
"context"
"fmt"
"io"
"os"
"path/filepath"
"strings"
)
// ArchiveType archive types
type ArchiveType int
const (
// ZIP zip archive type
ZIP ArchiveType = iota + 1
// TARGZ tar gz archive type
TARGZ
// BUNDLE bundle archive type
BUNDLE
)
// String converts an ArchiveType to string
func (a ArchiveType) String() string {
switch a {
case ZIP:
return "zip"
case TARGZ:
return "tar.gz"
case BUNDLE:
return "bundle"
}
return "unknown"
}
func ToArchiveType(s string) ArchiveType {
switch s {
case "zip":
return ZIP
case "tar.gz":
return TARGZ
case "bundle":
return BUNDLE
}
return 0
}
// CreateArchive create archive content to the target path
func (repo *Repository) CreateArchive(ctx context.Context, format ArchiveType, target io.Writer, usePrefix bool, commitID string) error {
if format.String() == "unknown" {
return fmt.Errorf("unknown format: %v", format)
}
cmd := NewCommand(ctx, "archive")
if usePrefix {
cmd.AddOptionFormat("--prefix=%s", filepath.Base(strings.TrimSuffix(repo.Path, ".git"))+"/")
}
cmd.AddOptionFormat("--format=%s", format.String())
cmd.AddDynamicArguments(commitID)
// Avoid LFS hooks getting installed because of /etc/gitconfig, which can break pull requests.
env := append(os.Environ(), "GIT_CONFIG_NOSYSTEM=1")
var stderr strings.Builder
err := cmd.Run(&RunOpts{
Dir: repo.Path,
Stdout: target,
Stderr: &stderr,
Env: env,
})
if err != nil {
return ConcatenateError(err, stderr.String())
}
return nil
}