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"
"container/list"
"fmt"
"path"
"strings"
"time"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/cache"
"code.gitea.io/gitea/modules/charset"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/lfs"
"code.gitea.io/gitea/modules/log"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/setting"
"code.gitea.io/gitea/modules/structs"
pull_service "code.gitea.io/gitea/services/pull"
stdcharset "golang.org/x/net/html/charset"
"golang.org/x/text/transform"
)
// IdentityOptions for a person's identity like an author or committer
type IdentityOptions struct {
Name string
Email string
}
// CommitDateOptions store dates for GIT_AUTHOR_DATE and GIT_COMMITTER_DATE
type CommitDateOptions struct {
Author time.Time
Committer time.Time
}
// UpdateRepoFileOptions holds the repository file update options
type UpdateRepoFileOptions struct {
LastCommitID string
OldBranch string
NewBranch string
TreePath string
FromTreePath string
Message string
Content string
SHA string
IsNewFile bool
Author *IdentityOptions
Committer *IdentityOptions
Dates *CommitDateOptions
}
func detectEncodingAndBOM(entry *git.TreeEntry, repo *models.Repository) (string, bool) {
reader, err := entry.Blob().DataAsync()
if err != nil {
// return default
return "UTF-8", false
}
defer reader.Close()
buf := make([]byte, 1024)
n, err := reader.Read(buf)
if err != nil {
// return default
return "UTF-8", false
}
buf = buf[:n]
if setting.LFS.StartServer {
meta := lfs.IsPointerFile(&buf)
if meta != nil {
meta, err = repo.GetLFSMetaObjectByOid(meta.Oid)
if err != nil && err != models.ErrLFSObjectNotExist {
// return default
return "UTF-8", false
}
}
if meta != nil {
dataRc, err := lfs.ReadMetaObject(meta)
if err != nil {
// return default
return "UTF-8", false
}
defer dataRc.Close()
buf = make([]byte, 1024)
n, err = dataRc.Read(buf)
if err != nil {
// return default
return "UTF-8", false
}
buf = buf[:n]
}
}
encoding, err := charset.DetectEncoding(buf)
if err != nil {
// just default to utf-8 and no bom
return "UTF-8", false
}
if encoding == "UTF-8" {
return encoding, bytes.Equal(buf[0:3], charset.UTF8BOM)
}
charsetEncoding, _ := stdcharset.Lookup(encoding)
if charsetEncoding == nil {
return "UTF-8", false
}
result, n, err := transform.String(charsetEncoding.NewDecoder(), string(buf))
if err != nil {
// return default
return "UTF-8", false
}
if n > 2 {
return encoding, bytes.Equal([]byte(result)[0:3], charset.UTF8BOM)
}
return encoding, false
}
// CreateOrUpdateRepoFile adds or updates a file in the given repository
func CreateOrUpdateRepoFile(repo *models.Repository, doer *models.User, opts *UpdateRepoFileOptions) (*structs.FileResponse, error) {
// If no branch name is set, assume master
if opts.OldBranch == "" {
opts.OldBranch = repo.DefaultBranch
}
if opts.NewBranch == "" {
opts.NewBranch = opts.OldBranch
}
// oldBranch must exist for this operation
if _, err := repo_module.GetBranch(repo, opts.OldBranch); err != nil {
return nil, err
}
// A NewBranch can be specified for the file to be created/updated in a new branch.
// Check to make sure the branch does not already exist, otherwise we can't proceed.
// If we aren't branching to a new branch, make sure user can commit to the given branch
if opts.NewBranch != opts.OldBranch {
existingBranch, err := repo_module.GetBranch(repo, opts.NewBranch)
if existingBranch != nil {
return nil, models.ErrBranchAlreadyExists{
BranchName: opts.NewBranch,
}
}
if err != nil && !git.IsErrBranchNotExist(err) {
return nil, err
}
} else if protected, _ := repo.IsProtectedBranchForPush(opts.OldBranch, doer); protected {
return nil, models.ErrUserCannotCommit{UserName: doer.LowerName}
}
// If FromTreePath is not set, set it to the opts.TreePath
if opts.TreePath != "" && opts.FromTreePath == "" {
opts.FromTreePath = opts.TreePath
}
// Check that the path given in opts.treePath is valid (not a git path)
treePath := CleanUploadFileName(opts.TreePath)
if treePath == "" {
return nil, models.ErrFilenameInvalid{
Path: opts.TreePath,
}
}
// If there is a fromTreePath (we are copying it), also clean it up
fromTreePath := CleanUploadFileName(opts.FromTreePath)
if fromTreePath == "" && opts.FromTreePath != "" {
return nil, models.ErrFilenameInvalid{
Path: opts.FromTreePath,
}
}
message := strings.TrimSpace(opts.Message)
author, committer := GetAuthorAndCommitterUsers(opts.Author, opts.Committer, doer)
t, err := NewTemporaryUploadRepository(repo)
if err != nil {
log.Error("%v", err)
}
defer t.Close()
if err := t.Clone(opts.OldBranch); err != nil {
return nil, err
}
if err := t.SetDefaultIndex(); err != nil {
return nil, err
}
// Get the commit of the original branch
commit, err := t.GetBranchCommit(opts.OldBranch)
if err != nil {
return nil, err // Couldn't get a commit for the branch
}
// Assigned LastCommitID in opts if it hasn't been set
if opts.LastCommitID == "" {
opts.LastCommitID = commit.ID.String()
} else {
lastCommitID, err := t.gitRepo.ConvertToSHA1(opts.LastCommitID)
if err != nil {
return nil, fmt.Errorf("DeleteRepoFile: Invalid last commit ID: %v", err)
}
opts.LastCommitID = lastCommitID.String()
}
encoding := "UTF-8"
bom := false
if !opts.IsNewFile {
fromEntry, err := commit.GetTreeEntryByPath(fromTreePath)
if err != nil {
return nil, err
}
if opts.SHA != "" {
// If a SHA was given and the SHA given doesn't match the SHA of the fromTreePath, throw error
if opts.SHA != fromEntry.ID.String() {
return nil, models.ErrSHADoesNotMatch{
Path: treePath,
GivenSHA: opts.SHA,
CurrentSHA: fromEntry.ID.String(),
}
}
} else if opts.LastCommitID != "" {
// If a lastCommitID was given and it doesn't match the commitID of the head of the branch throw
// an error, but only if we aren't creating a new branch.
if commit.ID.String() != opts.LastCommitID && opts.OldBranch == opts.NewBranch {
if changed, err := commit.FileChangedSinceCommit(treePath, opts.LastCommitID); err != nil {
return nil, err
} else if changed {
return nil, models.ErrCommitIDDoesNotMatch{
GivenCommitID: opts.LastCommitID,
CurrentCommitID: opts.LastCommitID,
}
}
// The file wasn't modified, so we are good to delete it
}
} else {
// When updating a file, a lastCommitID or SHA needs to be given to make sure other commits
// haven't been made. We throw an error if one wasn't provided.
return nil, models.ErrSHAOrCommitIDNotProvided{}
}
encoding, bom = detectEncodingAndBOM(fromEntry, repo)
}
// For the path where this file will be created/updated, we need to make
// sure no parts of the path are existing files or links except for the last
// item in the path which is the file name, and that shouldn't exist IF it is
// a new file OR is being moved to a new path.
treePathParts := strings.Split(treePath, "/")
subTreePath := ""
for index, part := range treePathParts {
subTreePath = path.Join(subTreePath, part)
entry, err := commit.GetTreeEntryByPath(subTreePath)
if err != nil {
if git.IsErrNotExist(err) {
// Means there is no item with that name, so we're good
break
}
return nil, err
}
if index < len(treePathParts)-1 {
if !entry.IsDir() {
return nil, models.ErrFilePathInvalid{
Message: fmt.Sprintf("a file exists where you’re trying to create a subdirectory [path: %s]", subTreePath),
Path: subTreePath,
Name: part,
Type: git.EntryModeBlob,
}
}
} else if entry.IsLink() {
return nil, models.ErrFilePathInvalid{
Message: fmt.Sprintf("a symbolic link exists where you’re trying to create a subdirectory [path: %s]", subTreePath),
Path: subTreePath,
Name: part,
Type: git.EntryModeSymlink,
}
} else if entry.IsDir() {
return nil, models.ErrFilePathInvalid{
Message: fmt.Sprintf("a directory exists where you’re trying to create a file [path: %s]", subTreePath),
Path: subTreePath,
Name: part,
Type: git.EntryModeTree,
}
} else if fromTreePath != treePath || opts.IsNewFile {
// The entry shouldn't exist if we are creating new file or moving to a new path
return nil, models.ErrRepoFileAlreadyExists{
Path: treePath,
}
}
}
// Get the two paths (might be the same if not moving) from the index if they exist
filesInIndex, err := t.LsFiles(opts.TreePath, opts.FromTreePath)
if err != nil {
return nil, fmt.Errorf("UpdateRepoFile: %v", err)
}
// If is a new file (not updating) then the given path shouldn't exist
if opts.IsNewFile {
for _, file := range filesInIndex {
if file == opts.TreePath {
return nil, models.ErrRepoFileAlreadyExists{
Path: opts.TreePath,
}
}
}
}
// Remove the old path from the tree
if fromTreePath != treePath && len(filesInIndex) > 0 {
for _, file := range filesInIndex {
if file == fromTreePath {
if err := t.RemoveFilesFromIndex(opts.FromTreePath); err != nil {
return nil, err
}
}
}
}
content := opts.Content
if bom {
content = string(charset.UTF8BOM) + content
}
if encoding != "UTF-8" {
charsetEncoding, _ := stdcharset.Lookup(encoding)
if charsetEncoding != nil {
result, _, err := transform.String(charsetEncoding.NewEncoder(), content)
if err != nil {
// Look if we can't encode back in to the original we should just stick with utf-8
log.Error("Error re-encoding %s (%s) as %s - will stay as UTF-8: %v", opts.TreePath, opts.FromTreePath, encoding, err)
result = content
}
content = result
} else {
log.Error("Unknown encoding: %s", encoding)
}
}
// Reset the opts.Content to our adjusted content to ensure that LFS gets the correct content
opts.Content = content
var lfsMetaObject *models.LFSMetaObject
if setting.LFS.StartServer {
// Check there is no way this can return multiple infos
filename2attribute2info, err := t.CheckAttribute("filter", treePath)
if err != nil {
return nil, err
}
if filename2attribute2info[treePath] != nil && filename2attribute2info[treePath]["filter"] == "lfs" {
// OK so we are supposed to LFS this data!
oid, err := models.GenerateLFSOid(strings.NewReader(opts.Content))
if err != nil {
return nil, err
}
lfsMetaObject = &models.LFSMetaObject{Oid: oid, Size: int64(len(opts.Content)), RepositoryID: repo.ID}
content = lfsMetaObject.Pointer()
}
}
// Add the object to the database
objectHash, err := t.HashObject(strings.NewReader(content))
if err != nil {
return nil, err
}
// Add the object to the index
if err := t.AddObjectToIndex("100644", objectHash, treePath); err != nil {
return nil, err
}
// Now write the tree
treeHash, err := t.WriteTree()
if err != nil {
return nil, err
}
// Now commit the tree
var commitHash string
if opts.Dates != nil {
commitHash, err = t.CommitTreeWithDate(author, committer, treeHash, message, opts.Dates.Author, opts.Dates.Committer)
} else {
commitHash, err = t.CommitTree(author, committer, treeHash, message)
}
if err != nil {
return nil, err
}
if lfsMetaObject != nil {
// We have an LFS object - create it
lfsMetaObject, err = models.NewLFSMetaObject(lfsMetaObject)
if err != nil {
return nil, err
}
contentStore := &lfs.ContentStore{BasePath: setting.LFS.ContentPath}
if !contentStore.Exists(lfsMetaObject) {
if err := contentStore.Put(lfsMetaObject, strings.NewReader(opts.Content)); err != nil {
if _, err2 := repo.RemoveLFSMetaObjectByOid(lfsMetaObject.Oid); err2 != nil {
return nil, fmt.Errorf("Error whilst removing failed inserted LFS object %s: %v (Prev Error: %v)", lfsMetaObject.Oid, err2, err)
}
return nil, err
}
}
}
// Then push this tree to NewBranch
if err := t.Push(doer, commitHash, opts.NewBranch); err != nil {
return nil, err
}
commit, err = t.GetCommit(commitHash)
if err != nil {
return nil, err
}
file, err := GetFileResponseFromCommit(repo, commit, opts.NewBranch, treePath)
if err != nil {
return nil, err
}
return file, nil
}
// PushUpdateOptions defines the push update options
type PushUpdateOptions struct {
PusherID int64
PusherName string
RepoUserName string
RepoName string
RefFullName string
OldCommitID string
NewCommitID string
Branch string
}
// PushUpdate must be called for any push actions in order to
// generates necessary push action history feeds and other operations
func PushUpdate(repo *models.Repository, branch string, opts PushUpdateOptions) error {
isNewRef := opts.OldCommitID == git.EmptySHA
isDelRef := opts.NewCommitID == git.EmptySHA
if isNewRef && isDelRef {
return fmt.Errorf("Old and new revisions are both %s", git.EmptySHA)
}
repoPath := models.RepoPath(opts.RepoUserName, opts.RepoName)
_, err := git.NewCommand("update-server-info").RunInDir(repoPath)
if err != nil {
return fmt.Errorf("Failed to call 'git update-server-info': %v", err)
}
gitRepo, err := git.OpenRepository(repoPath)
if err != nil {
return fmt.Errorf("OpenRepository: %v", err)
}
defer gitRepo.Close()
if err = repo.UpdateSize(models.DefaultDBContext()); err != nil {
log.Error("Failed to update size for repository: %v", err)
}
commitRepoActionOptions, err := createCommitRepoActionOption(repo, gitRepo, &opts)
if err != nil {
return err
}
if err := CommitRepoAction(commitRepoActionOptions); err != nil {
return fmt.Errorf("CommitRepoAction: %v", err)
}
pusher, err := models.GetUserByID(opts.PusherID)
if err != nil {
return err
}
log.Trace("TriggerTask '%s/%s' by %s", repo.Name, branch, pusher.Name)
go pull_service.AddTestPullRequestTask(pusher, repo.ID, branch, true, opts.OldCommitID, opts.NewCommitID)
if err = models.WatchIfAuto(opts.PusherID, repo.ID, true); err != nil {
log.Warn("Fail to perform auto watch on user %v for repo %v: %v", opts.PusherID, repo.ID, err)
}
return nil
}
// PushUpdates generates push action history feeds for push updating multiple refs
func PushUpdates(repo *models.Repository, optsList []*PushUpdateOptions) error {
repoPath := repo.RepoPath()
_, err := git.NewCommand("update-server-info").RunInDir(repoPath)
if err != nil {
return fmt.Errorf("Failed to call 'git update-server-info': %v", err)
}
gitRepo, err := git.OpenRepository(repoPath)
if err != nil {
return fmt.Errorf("OpenRepository: %v", err)
}
if err = repo.UpdateSize(models.DefaultDBContext()); err != nil {
log.Error("Failed to update size for repository: %v", err)
}
actions, err := createCommitRepoActions(repo, gitRepo, optsList)
if err != nil {
return err
}
if err := CommitRepoAction(actions...); err != nil {
return fmt.Errorf("CommitRepoAction: %v", err)
}
var pusher *models.User
for _, opts := range optsList {
if pusher == nil || pusher.ID != opts.PusherID {
var err error
pusher, err = models.GetUserByID(opts.PusherID)
if err != nil {
return err
}
}
if opts.NewCommitID != git.EmptySHA {
if err = models.RemoveDeletedBranch(repo.ID, opts.Branch); err != nil {
log.Error("models.RemoveDeletedBranch %s/%s failed: %v", repo.ID, opts.Branch, err)
}
}
log.Trace("TriggerTask '%s/%s' by %s", repo.Name, opts.Branch, pusher.Name)
go pull_service.AddTestPullRequestTask(pusher, repo.ID, opts.Branch, true, opts.OldCommitID, opts.NewCommitID)
if err = models.WatchIfAuto(opts.PusherID, repo.ID, true); err != nil {
log.Warn("Fail to perform auto watch on user %v for repo %v: %v", opts.PusherID, repo.ID, err)
}
}
return nil
}
func createCommitRepoActions(repo *models.Repository, gitRepo *git.Repository, optsList []*PushUpdateOptions) ([]*CommitRepoActionOptions, error) {
addTags := make([]string, 0, len(optsList))
delTags := make([]string, 0, len(optsList))
actions := make([]*CommitRepoActionOptions, 0, len(optsList))
for _, opts := range optsList {
isNewRef := opts.OldCommitID == git.EmptySHA
isDelRef := opts.NewCommitID == git.EmptySHA
if isNewRef && isDelRef {
return nil, fmt.Errorf("Old and new revisions are both %s", git.EmptySHA)
}
var commits = &repo_module.PushCommits{}
if strings.HasPrefix(opts.RefFullName, git.TagPrefix) {
// If is tag reference
tagName := opts.RefFullName[len(git.TagPrefix):]
if isDelRef {
delTags = append(delTags, tagName)
} else {
cache.Remove(repo.GetCommitsCountCacheKey(tagName, true))
addTags = append(addTags, tagName)
}
} else if !isDelRef {
// If is branch reference
// Clear cache for branch commit count
cache.Remove(repo.GetCommitsCountCacheKey(opts.RefFullName[len(git.BranchPrefix):], true))
newCommit, err := gitRepo.GetCommit(opts.NewCommitID)
if err != nil {
return nil, fmt.Errorf("gitRepo.GetCommit: %v", err)
}
// Push new branch.
var l *list.List
if isNewRef {
l, err = newCommit.CommitsBeforeLimit(10)
if err != nil {
return nil, fmt.Errorf("newCommit.CommitsBeforeLimit: %v", err)
}
} else {
l, err = newCommit.CommitsBeforeUntil(opts.OldCommitID)
if err != nil {
return nil, fmt.Errorf("newCommit.CommitsBeforeUntil: %v", err)
}
}
commits = repo_module.ListToPushCommits(l)
}
actions = append(actions, &CommitRepoActionOptions{
PusherName: opts.PusherName,
RepoOwnerID: repo.OwnerID,
RepoName: repo.Name,
RefFullName: opts.RefFullName,
OldCommitID: opts.OldCommitID,
NewCommitID: opts.NewCommitID,
Commits: commits,
})
}
if err := models.PushUpdateAddDeleteTags(repo, gitRepo, addTags, delTags); err != nil {
return nil, fmt.Errorf("PushUpdateAddDeleteTags: %v", err)
}
return actions, nil
}
func createCommitRepoActionOption(repo *models.Repository, gitRepo *git.Repository, opts *PushUpdateOptions) (*CommitRepoActionOptions, error) {
isNewRef := opts.OldCommitID == git.EmptySHA
isDelRef := opts.NewCommitID == git.EmptySHA
if isNewRef && isDelRef {
return nil, fmt.Errorf("Old and new revisions are both %s", git.EmptySHA)
}
var commits = &repo_module.PushCommits{}
if strings.HasPrefix(opts.RefFullName, git.TagPrefix) {
// If is tag reference
tagName := opts.RefFullName[len(git.TagPrefix):]
if isDelRef {
if err := models.PushUpdateDeleteTag(repo, tagName); err != nil {
return nil, fmt.Errorf("PushUpdateDeleteTag: %v", err)
}
} else {
// Clear cache for tag commit count
cache.Remove(repo.GetCommitsCountCacheKey(tagName, true))
if err := repo_module.PushUpdateAddTag(repo, gitRepo, tagName); err != nil {
return nil, fmt.Errorf("PushUpdateAddTag: %v", err)
}
}
} else if !isDelRef {
// If is branch reference
// Clear cache for branch commit count
cache.Remove(repo.GetCommitsCountCacheKey(opts.RefFullName[len(git.BranchPrefix):], true))
newCommit, err := gitRepo.GetCommit(opts.NewCommitID)
if err != nil {
return nil, fmt.Errorf("gitRepo.GetCommit: %v", err)
}
// Push new branch.
var l *list.List
if isNewRef {
l, err = newCommit.CommitsBeforeLimit(10)
if err != nil {
return nil, fmt.Errorf("newCommit.CommitsBeforeLimit: %v", err)
}
} else {
l, err = newCommit.CommitsBeforeUntil(opts.OldCommitID)
if err != nil {
return nil, fmt.Errorf("newCommit.CommitsBeforeUntil: %v", err)
}
}
commits = repo_module.ListToPushCommits(l)
}
return &CommitRepoActionOptions{
PusherName: opts.PusherName,
RepoOwnerID: repo.OwnerID,
RepoName: repo.Name,
RefFullName: opts.RefFullName,
OldCommitID: opts.OldCommitID,
NewCommitID: opts.NewCommitID,
Commits: commits,
}, nil
}