2019-04-17 11:06:35 -05:00
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// 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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2021-11-24 02:56:24 -05:00
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package files
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2019-04-17 11:06:35 -05:00
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import (
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"bytes"
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"fmt"
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"path"
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"strings"
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2019-12-23 21:33:52 -05:00
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"time"
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2019-04-17 11:06:35 -05:00
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"code.gitea.io/gitea/models"
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user_model "code.gitea.io/gitea/models/user"
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"code.gitea.io/gitea/modules/charset"
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"code.gitea.io/gitea/modules/git"
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"code.gitea.io/gitea/modules/lfs"
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"code.gitea.io/gitea/modules/log"
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"code.gitea.io/gitea/modules/setting"
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2019-05-11 05:21:34 -05:00
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"code.gitea.io/gitea/modules/structs"
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2021-10-24 16:12:43 -05:00
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"code.gitea.io/gitea/modules/util"
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repo_service "code.gitea.io/gitea/services/repository"
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stdcharset "golang.org/x/net/html/charset"
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"golang.org/x/text/transform"
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)
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// IdentityOptions for a person's identity like an author or committer
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type IdentityOptions struct {
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Name string
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Email string
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}
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// CommitDateOptions store dates for GIT_AUTHOR_DATE and GIT_COMMITTER_DATE
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type CommitDateOptions struct {
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Author time.Time
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Committer time.Time
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}
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// UpdateRepoFileOptions holds the repository file update options
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type UpdateRepoFileOptions struct {
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LastCommitID string
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OldBranch string
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NewBranch string
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TreePath string
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FromTreePath string
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Message string
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Content string
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SHA string
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IsNewFile bool
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Author *IdentityOptions
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Committer *IdentityOptions
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Dates *CommitDateOptions
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Signoff bool
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}
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func detectEncodingAndBOM(entry *git.TreeEntry, repo *models.Repository) (string, bool) {
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reader, err := entry.Blob().DataAsync()
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if err != nil {
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// return default
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return "UTF-8", false
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}
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defer reader.Close()
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buf := make([]byte, 1024)
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n, err := util.ReadAtMost(reader, buf)
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if err != nil {
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// return default
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return "UTF-8", false
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}
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buf = buf[:n]
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if setting.LFS.StartServer {
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pointer, _ := lfs.ReadPointerFromBuffer(buf)
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if pointer.IsValid() {
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meta, err := repo.GetLFSMetaObjectByOid(pointer.Oid)
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if err != nil && err != models.ErrLFSObjectNotExist {
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// return default
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return "UTF-8", false
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}
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if meta != nil {
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dataRc, err := lfs.ReadMetaObject(pointer)
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if err != nil {
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// return default
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return "UTF-8", false
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}
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defer dataRc.Close()
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buf = make([]byte, 1024)
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n, err = util.ReadAtMost(dataRc, buf)
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if err != nil {
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// return default
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return "UTF-8", false
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}
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buf = buf[:n]
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}
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}
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}
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encoding, err := charset.DetectEncoding(buf)
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if err != nil {
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// just default to utf-8 and no bom
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return "UTF-8", false
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}
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if encoding == "UTF-8" {
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return encoding, bytes.Equal(buf[0:3], charset.UTF8BOM)
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}
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charsetEncoding, _ := stdcharset.Lookup(encoding)
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if charsetEncoding == nil {
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return "UTF-8", false
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}
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result, n, err := transform.String(charsetEncoding.NewDecoder(), string(buf))
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if err != nil {
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// return default
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return "UTF-8", false
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}
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if n > 2 {
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return encoding, bytes.Equal([]byte(result)[0:3], charset.UTF8BOM)
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}
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return encoding, false
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}
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// CreateOrUpdateRepoFile adds or updates a file in the given repository
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func CreateOrUpdateRepoFile(repo *models.Repository, doer *user_model.User, opts *UpdateRepoFileOptions) (*structs.FileResponse, error) {
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// If no branch name is set, assume default branch
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if opts.OldBranch == "" {
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opts.OldBranch = repo.DefaultBranch
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}
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if opts.NewBranch == "" {
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opts.NewBranch = opts.OldBranch
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}
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// oldBranch must exist for this operation
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if _, err := repo_service.GetBranch(repo, opts.OldBranch); err != nil {
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return nil, err
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}
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// A NewBranch can be specified for the file to be created/updated in a new branch.
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// Check to make sure the branch does not already exist, otherwise we can't proceed.
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// If we aren't branching to a new branch, make sure user can commit to the given branch
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if opts.NewBranch != opts.OldBranch {
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existingBranch, err := repo_service.GetBranch(repo, opts.NewBranch)
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if existingBranch != nil {
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return nil, models.ErrBranchAlreadyExists{
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BranchName: opts.NewBranch,
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}
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}
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if err != nil && !git.IsErrBranchNotExist(err) {
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return nil, err
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}
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} else if err := VerifyBranchProtection(repo, doer, opts.OldBranch, opts.TreePath); err != nil {
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return nil, err
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}
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// If FromTreePath is not set, set it to the opts.TreePath
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if opts.TreePath != "" && opts.FromTreePath == "" {
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opts.FromTreePath = opts.TreePath
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}
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// Check that the path given in opts.treePath is valid (not a git path)
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treePath := CleanUploadFileName(opts.TreePath)
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if treePath == "" {
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return nil, models.ErrFilenameInvalid{
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Path: opts.TreePath,
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}
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}
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// If there is a fromTreePath (we are copying it), also clean it up
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fromTreePath := CleanUploadFileName(opts.FromTreePath)
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if fromTreePath == "" && opts.FromTreePath != "" {
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return nil, models.ErrFilenameInvalid{
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Path: opts.FromTreePath,
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}
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}
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message := strings.TrimSpace(opts.Message)
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author, committer := GetAuthorAndCommitterUsers(opts.Author, opts.Committer, doer)
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t, err := NewTemporaryUploadRepository(repo)
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if err != nil {
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log.Error("%v", err)
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}
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defer t.Close()
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if err := t.Clone(opts.OldBranch); err != nil {
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return nil, err
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}
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if err := t.SetDefaultIndex(); err != nil {
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return nil, err
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}
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// Get the commit of the original branch
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commit, err := t.GetBranchCommit(opts.OldBranch)
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if err != nil {
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return nil, err // Couldn't get a commit for the branch
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}
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// Assigned LastCommitID in opts if it hasn't been set
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if opts.LastCommitID == "" {
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opts.LastCommitID = commit.ID.String()
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} else {
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lastCommitID, err := t.gitRepo.ConvertToSHA1(opts.LastCommitID)
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if err != nil {
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return nil, fmt.Errorf("DeleteRepoFile: Invalid last commit ID: %v", err)
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}
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opts.LastCommitID = lastCommitID.String()
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}
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encoding := "UTF-8"
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bom := false
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executable := false
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if !opts.IsNewFile {
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fromEntry, err := commit.GetTreeEntryByPath(fromTreePath)
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if err != nil {
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return nil, err
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}
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if opts.SHA != "" {
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// If a SHA was given and the SHA given doesn't match the SHA of the fromTreePath, throw error
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if opts.SHA != fromEntry.ID.String() {
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return nil, models.ErrSHADoesNotMatch{
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Path: treePath,
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GivenSHA: opts.SHA,
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CurrentSHA: fromEntry.ID.String(),
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}
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}
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} else if opts.LastCommitID != "" {
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// If a lastCommitID was given and it doesn't match the commitID of the head of the branch throw
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// an error, but only if we aren't creating a new branch.
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if commit.ID.String() != opts.LastCommitID && opts.OldBranch == opts.NewBranch {
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if changed, err := commit.FileChangedSinceCommit(treePath, opts.LastCommitID); err != nil {
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return nil, err
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} else if changed {
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return nil, models.ErrCommitIDDoesNotMatch{
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GivenCommitID: opts.LastCommitID,
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CurrentCommitID: opts.LastCommitID,
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}
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}
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// The file wasn't modified, so we are good to delete it
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}
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} else {
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// When updating a file, a lastCommitID or SHA needs to be given to make sure other commits
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// haven't been made. We throw an error if one wasn't provided.
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return nil, models.ErrSHAOrCommitIDNotProvided{}
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}
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encoding, bom = detectEncodingAndBOM(fromEntry, repo)
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executable = fromEntry.IsExecutable()
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}
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// For the path where this file will be created/updated, we need to make
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// sure no parts of the path are existing files or links except for the last
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// item in the path which is the file name, and that shouldn't exist IF it is
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// a new file OR is being moved to a new path.
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treePathParts := strings.Split(treePath, "/")
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subTreePath := ""
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for index, part := range treePathParts {
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subTreePath = path.Join(subTreePath, part)
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entry, err := commit.GetTreeEntryByPath(subTreePath)
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if err != nil {
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if git.IsErrNotExist(err) {
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// Means there is no item with that name, so we're good
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break
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}
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return nil, err
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}
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if index < len(treePathParts)-1 {
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if !entry.IsDir() {
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return nil, models.ErrFilePathInvalid{
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Message: fmt.Sprintf("a file exists where you’re trying to create a subdirectory [path: %s]", subTreePath),
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Path: subTreePath,
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Name: part,
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Type: git.EntryModeBlob,
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}
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}
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} else if entry.IsLink() {
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return nil, models.ErrFilePathInvalid{
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Message: fmt.Sprintf("a symbolic link exists where you’re trying to create a subdirectory [path: %s]", subTreePath),
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Path: subTreePath,
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Name: part,
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Type: git.EntryModeSymlink,
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}
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} else if entry.IsDir() {
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return nil, models.ErrFilePathInvalid{
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|
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
|
2019-04-26 07:00:30 -05:00
|
|
|
|
if bom {
|
2019-08-15 07:07:28 -05:00
|
|
|
|
content = string(charset.UTF8BOM) + content
|
2019-04-26 07:00:30 -05:00
|
|
|
|
}
|
|
|
|
|
if encoding != "UTF-8" {
|
2019-08-15 07:07:28 -05:00
|
|
|
|
charsetEncoding, _ := stdcharset.Lookup(encoding)
|
2019-04-26 07:00:30 -05:00
|
|
|
|
if charsetEncoding != nil {
|
2019-07-23 13:50:39 -05:00
|
|
|
|
result, _, err := transform.String(charsetEncoding.NewEncoder(), content)
|
2019-04-26 07:00:30 -05:00
|
|
|
|
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
|
2019-04-17 11:06:35 -05:00
|
|
|
|
var lfsMetaObject *models.LFSMetaObject
|
|
|
|
|
|
2019-10-11 19:13:27 -05:00
|
|
|
|
if setting.LFS.StartServer {
|
|
|
|
|
// Check there is no way this can return multiple infos
|
2021-03-01 07:14:17 -05:00
|
|
|
|
filename2attribute2info, err := t.gitRepo.CheckAttribute(git.CheckAttributeOpts{
|
|
|
|
|
Attributes: []string{"filter"},
|
|
|
|
|
Filenames: []string{treePath},
|
|
|
|
|
})
|
2019-04-17 11:06:35 -05:00
|
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
|
2019-10-11 19:13:27 -05:00
|
|
|
|
if filename2attribute2info[treePath] != nil && filename2attribute2info[treePath]["filter"] == "lfs" {
|
|
|
|
|
// OK so we are supposed to LFS this data!
|
2021-04-08 17:25:57 -05:00
|
|
|
|
pointer, err := lfs.GeneratePointer(strings.NewReader(opts.Content))
|
2019-10-11 19:13:27 -05:00
|
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
2021-04-08 17:25:57 -05:00
|
|
|
|
lfsMetaObject = &models.LFSMetaObject{Pointer: pointer, RepositoryID: repo.ID}
|
|
|
|
|
content = pointer.StringContent()
|
2019-10-11 19:13:27 -05:00
|
|
|
|
}
|
|
|
|
|
}
|
2019-04-17 11:06:35 -05:00
|
|
|
|
// 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
|
2020-03-04 18:46:12 -05:00
|
|
|
|
if executable {
|
|
|
|
|
if err := t.AddObjectToIndex("100755", objectHash, treePath); err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
} else {
|
|
|
|
|
if err := t.AddObjectToIndex("100644", objectHash, treePath); err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
2019-04-17 11:06:35 -05:00
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Now write the tree
|
|
|
|
|
treeHash, err := t.WriteTree()
|
|
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
// Now commit the tree
|
2019-12-23 21:33:52 -05:00
|
|
|
|
var commitHash string
|
|
|
|
|
if opts.Dates != nil {
|
2021-01-29 03:57:45 -05:00
|
|
|
|
commitHash, err = t.CommitTreeWithDate(author, committer, treeHash, message, opts.Signoff, opts.Dates.Author, opts.Dates.Committer)
|
2019-12-23 21:33:52 -05:00
|
|
|
|
} else {
|
2021-01-29 03:57:45 -05:00
|
|
|
|
commitHash, err = t.CommitTree(author, committer, treeHash, message, opts.Signoff)
|
2019-12-23 21:33:52 -05:00
|
|
|
|
}
|
2019-04-17 11:06:35 -05:00
|
|
|
|
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
|
|
|
|
|
}
|
2021-04-08 17:25:57 -05:00
|
|
|
|
contentStore := lfs.NewContentStore()
|
|
|
|
|
exist, err := contentStore.Exists(lfsMetaObject.Pointer)
|
2020-09-08 10:45:10 -05:00
|
|
|
|
if err != nil {
|
|
|
|
|
return nil, err
|
|
|
|
|
}
|
|
|
|
|
if !exist {
|
2021-04-08 17:25:57 -05:00
|
|
|
|
if err := contentStore.Put(lfsMetaObject.Pointer, strings.NewReader(opts.Content)); err != nil {
|
2019-10-28 13:31:55 -05:00
|
|
|
|
if _, err2 := repo.RemoveLFSMetaObjectByOid(lfsMetaObject.Oid); err2 != nil {
|
2019-04-17 11:06:35 -05:00
|
|
|
|
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 {
|
2020-03-27 23:13:18 -05:00
|
|
|
|
log.Error("%T %v", err, err)
|
2019-04-17 11:06:35 -05:00
|
|
|
|
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
|
|
|
|
|
}
|
2021-09-11 09:21:17 -05:00
|
|
|
|
|
|
|
|
|
// VerifyBranchProtection verify the branch protection for modifying the given treePath on the given branch
|
2021-11-24 04:49:20 -05:00
|
|
|
|
func VerifyBranchProtection(repo *models.Repository, doer *user_model.User, branchName string, treePath string) error {
|
2021-09-11 09:21:17 -05:00
|
|
|
|
protectedBranch, err := repo.GetBranchProtection(branchName)
|
|
|
|
|
if err != nil {
|
|
|
|
|
return err
|
|
|
|
|
}
|
|
|
|
|
if protectedBranch != nil {
|
|
|
|
|
isUnprotectedFile := false
|
|
|
|
|
glob := protectedBranch.GetUnprotectedFilePatterns()
|
|
|
|
|
if len(glob) != 0 {
|
|
|
|
|
isUnprotectedFile = protectedBranch.IsUnprotectedFile(glob, treePath)
|
|
|
|
|
}
|
|
|
|
|
if !protectedBranch.CanUserPush(doer.ID) && !isUnprotectedFile {
|
|
|
|
|
return models.ErrUserCannotCommit{
|
|
|
|
|
UserName: doer.LowerName,
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
if protectedBranch.RequireSignedCommits {
|
|
|
|
|
_, _, _, err := repo.SignCRUDAction(doer, repo.RepoPath(), branchName)
|
|
|
|
|
if err != nil {
|
|
|
|
|
if !models.IsErrWontSign(err) {
|
|
|
|
|
return err
|
|
|
|
|
}
|
|
|
|
|
return models.ErrUserCannotCommit{
|
|
|
|
|
UserName: doer.LowerName,
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
patterns := protectedBranch.GetProtectedFilePatterns()
|
|
|
|
|
for _, pat := range patterns {
|
|
|
|
|
if pat.Match(strings.ToLower(treePath)) {
|
|
|
|
|
return models.ErrFilePathProtected{
|
|
|
|
|
Path: treePath,
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
}
|
|
|
|
|
return nil
|
|
|
|
|
}
|