gitea/modules/repository/init.go
zeripath 4979f15c3f
Add configurable Trust Models (#11712)
* Add configurable Trust Models

Gitea's default signature verification model differs from GitHub. GitHub
uses signatures to verify that the committer is who they say they are -
meaning that when GitHub makes a signed commit it must be the committer.
The GitHub model prevents re-publishing of commits after revocation of a
key and prevents re-signing of other people's commits to create a
completely trusted repository signed by one key or a set of trusted
keys.

The default behaviour of Gitea in contrast is to always display the
avatar and information related to a signature. This allows signatures to
be decoupled from the committer. That being said, allowing arbitary
users to present other peoples commits as theirs is not necessarily
desired therefore we have a trust model whereby signatures from
collaborators are marked trusted, signatures matching the commit line
are marked untrusted and signatures that match a user in the db but not
the committer line are marked unmatched.

The problem with this model is that this conflicts with Github therefore
we need to provide an option to allow users to choose the Github model
should they wish to.

Signed-off-by: Andrew Thornton <art27@cantab.net>

* Adjust locale strings

Signed-off-by: Andrew Thornton <art27@cantab.net>

* as per @6543

Co-authored-by: 6543 <6543@obermui.de>

* Update models/gpg_key.go

* Add migration for repository

Signed-off-by: Andrew Thornton <art27@cantab.net>

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: Lunny Xiao <xiaolunwen@gmail.com>
2020-09-20 00:44:55 +08:00

246 lines
7.4 KiB
Go

// 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 repository
import (
"bytes"
"fmt"
"io/ioutil"
"os"
"path/filepath"
"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/modules/util"
"github.com/unknwon/com"
)
func prepareRepoCommit(ctx models.DBContext, repo *models.Repository, tmpDir, repoPath string, opts models.CreateRepoOptions) error {
commitTimeStr := time.Now().Format(time.RFC3339)
authorSig := repo.Owner.NewGitSig()
// 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="+commitTimeStr,
"GIT_COMMITTER_NAME="+authorSig.Name,
"GIT_COMMITTER_EMAIL="+authorSig.Email,
"GIT_COMMITTER_DATE="+commitTimeStr,
)
// Clone to temporary path and do the init commit.
if stdout, err := git.NewCommand("clone", repoPath, tmpDir).
SetDescription(fmt.Sprintf("prepareRepoCommit (git clone): %s to %s", repoPath, tmpDir)).
RunInDirWithEnv("", env); err != nil {
log.Error("Failed to clone from %v into %s: stdout: %s\nError: %v", repo, tmpDir, stdout, err)
return fmt.Errorf("git clone: %v", err)
}
// README
data, err := models.GetRepoInitFile("readme", opts.Readme)
if err != nil {
return fmt.Errorf("GetRepoInitFile[%s]: %v", opts.Readme, err)
}
cloneLink := repo.CloneLink()
match := map[string]string{
"Name": repo.Name,
"Description": repo.Description,
"CloneURL.SSH": cloneLink.SSH,
"CloneURL.HTTPS": cloneLink.HTTPS,
"OwnerName": repo.OwnerName,
}
if err = ioutil.WriteFile(filepath.Join(tmpDir, "README.md"),
[]byte(com.Expand(string(data), match)), 0644); err != nil {
return fmt.Errorf("write README.md: %v", err)
}
// .gitignore
if len(opts.Gitignores) > 0 {
var buf bytes.Buffer
names := strings.Split(opts.Gitignores, ",")
for _, name := range names {
data, err = models.GetRepoInitFile("gitignore", name)
if err != nil {
return fmt.Errorf("GetRepoInitFile[%s]: %v", name, err)
}
buf.WriteString("# ---> " + name + "\n")
buf.Write(data)
buf.WriteString("\n")
}
if buf.Len() > 0 {
if err = ioutil.WriteFile(filepath.Join(tmpDir, ".gitignore"), buf.Bytes(), 0644); err != nil {
return fmt.Errorf("write .gitignore: %v", err)
}
}
}
// LICENSE
if len(opts.License) > 0 {
data, err = models.GetRepoInitFile("license", opts.License)
if err != nil {
return fmt.Errorf("GetRepoInitFile[%s]: %v", opts.License, err)
}
if err = ioutil.WriteFile(filepath.Join(tmpDir, "LICENSE"), data, 0644); err != nil {
return fmt.Errorf("write LICENSE: %v", err)
}
}
return nil
}
// initRepoCommit temporarily changes with work directory.
func initRepoCommit(tmpPath string, repo *models.Repository, u *models.User, defaultBranch string) (err error) {
commitTimeStr := time.Now().Format(time.RFC3339)
sig := u.NewGitSig()
// Because this may call hooks we should pass in the environment
env := append(os.Environ(),
"GIT_AUTHOR_NAME="+sig.Name,
"GIT_AUTHOR_EMAIL="+sig.Email,
"GIT_AUTHOR_DATE="+commitTimeStr,
"GIT_COMMITTER_DATE="+commitTimeStr,
)
committerName := sig.Name
committerEmail := sig.Email
if stdout, err := git.NewCommand("add", "--all").
SetDescription(fmt.Sprintf("initRepoCommit (git add): %s", tmpPath)).
RunInDir(tmpPath); err != nil {
log.Error("git add --all failed: Stdout: %s\nError: %v", stdout, err)
return fmt.Errorf("git add --all: %v", err)
}
err = git.LoadGitVersion()
if err != nil {
return fmt.Errorf("Unable to get git version: %v", err)
}
args := []string{
"commit", fmt.Sprintf("--author='%s <%s>'", sig.Name, sig.Email),
"-m", "Initial commit",
}
if git.CheckGitVersionConstraint(">= 1.7.9") == nil {
sign, keyID, signer, _ := models.SignInitialCommit(tmpPath, u)
if sign {
args = append(args, "-S"+keyID)
if repo.GetTrustModel() == models.CommitterTrustModel || repo.GetTrustModel() == models.CollaboratorCommitterTrustModel {
// need to set the committer to the KeyID owner
committerName = signer.Name
committerEmail = signer.Email
}
} else if git.CheckGitVersionConstraint(">= 2.0.0") == nil {
args = append(args, "--no-gpg-sign")
}
}
env = append(env,
"GIT_COMMITTER_NAME="+committerName,
"GIT_COMMITTER_EMAIL="+committerEmail,
)
if stdout, err := git.NewCommand(args...).
SetDescription(fmt.Sprintf("initRepoCommit (git commit): %s", tmpPath)).
RunInDirWithEnv(tmpPath, env); err != nil {
log.Error("Failed to commit: %v: Stdout: %s\nError: %v", args, stdout, err)
return fmt.Errorf("git commit: %v", err)
}
if len(defaultBranch) == 0 {
defaultBranch = setting.Repository.DefaultBranch
}
if stdout, err := git.NewCommand("push", "origin", "master:"+defaultBranch).
SetDescription(fmt.Sprintf("initRepoCommit (git push): %s", tmpPath)).
RunInDirWithEnv(tmpPath, models.InternalPushingEnvironment(u, repo)); err != nil {
log.Error("Failed to push back to master: Stdout: %s\nError: %v", stdout, err)
return fmt.Errorf("git push: %v", err)
}
return nil
}
func checkInitRepository(repoPath string) (err error) {
// Somehow the directory could exist.
if com.IsExist(repoPath) {
return fmt.Errorf("checkInitRepository: path already exists: %s", repoPath)
}
// Init git bare new repository.
if err = git.InitRepository(repoPath, true); err != nil {
return fmt.Errorf("git.InitRepository: %v", err)
} else if err = createDelegateHooks(repoPath); err != nil {
return fmt.Errorf("createDelegateHooks: %v", err)
}
return nil
}
// InitRepository initializes README and .gitignore if needed.
func initRepository(ctx models.DBContext, repoPath string, u *models.User, repo *models.Repository, opts models.CreateRepoOptions) (err error) {
if err = checkInitRepository(repoPath); err != nil {
return err
}
// Initialize repository according to user's choice.
if opts.AutoInit {
tmpDir, err := ioutil.TempDir(os.TempDir(), "gitea-"+repo.Name)
if err != nil {
return fmt.Errorf("Failed to create temp dir for repository %s: %v", repo.RepoPath(), err)
}
defer func() {
if err := util.RemoveAll(tmpDir); err != nil {
log.Warn("Unable to remove temporary directory: %s: Error: %v", tmpDir, err)
}
}()
if err = prepareRepoCommit(ctx, repo, tmpDir, repoPath, opts); err != nil {
return fmt.Errorf("prepareRepoCommit: %v", err)
}
// Apply changes and commit.
if err = initRepoCommit(tmpDir, repo, u, opts.DefaultBranch); err != nil {
return fmt.Errorf("initRepoCommit: %v", err)
}
}
// Re-fetch the repository from database before updating it (else it would
// override changes that were done earlier with sql)
if repo, err = models.GetRepositoryByIDCtx(ctx, repo.ID); err != nil {
return fmt.Errorf("getRepositoryByID: %v", err)
}
if !opts.AutoInit {
repo.IsEmpty = true
}
repo.DefaultBranch = "master"
if len(opts.DefaultBranch) > 0 {
repo.DefaultBranch = opts.DefaultBranch
gitRepo, err := git.OpenRepository(repo.RepoPath())
if err != nil {
return fmt.Errorf("openRepository: %v", err)
}
if err = gitRepo.SetDefaultBranch(repo.DefaultBranch); err != nil {
return fmt.Errorf("setDefaultBranch: %v", err)
}
}
if err = models.UpdateRepositoryCtx(ctx, repo, false); err != nil {
return fmt.Errorf("updateRepository: %v", err)
}
return nil
}