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gitea/services/wiki/wiki.go
wxiaoguang b39a5bbbd6
Make wiki title supports dashes and improve wiki name related features (#24143)
Close #7570


1. Clearly define the wiki path behaviors, see
`services/wiki/wiki_path.go` and tests
2. Keep compatibility with old contents
3. Allow to use dashes in titles, eg: "2000-01-02 Meeting record"
4. Add a "Pages" link in the dropdown, otherwise users can't go to the
Pages page easily.
5. Add a "View original git file" link in the Pages list, even if some
file names are broken, users still have a chance to edit or remove it,
without cloning the wiki repo to local.
6. Fix 500 error when the name contains prefix spaces.


This PR also introduces the ability to support sub-directories, but it
can't be done at the moment due to there are a lot of legacy wiki data,
which use "%2F" in file names.



![image](https://user-images.githubusercontent.com/2114189/232239004-3359d7b9-7bf3-4ff3-8446-bfb0e79645dd.png)


![image](https://user-images.githubusercontent.com/2114189/232239020-74b92c72-bf73-4377-a319-1c85609f82b1.png)

Co-authored-by: Giteabot <teabot@gitea.io>
2023-04-19 13:50:10 -04:00

343 lines
10 KiB
Go

// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package wiki
import (
"context"
"fmt"
"os"
"strings"
repo_model "code.gitea.io/gitea/models/repo"
system_model "code.gitea.io/gitea/models/system"
"code.gitea.io/gitea/models/unit"
user_model "code.gitea.io/gitea/models/user"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/sync"
asymkey_service "code.gitea.io/gitea/services/asymkey"
)
// TODO: use clustered lock (unique queue? or *abuse* cache)
var wikiWorkingPool = sync.NewExclusivePool()
const (
DefaultRemote = "origin"
DefaultBranch = "master"
)
// InitWiki initializes a wiki for repository,
// it does nothing when repository already has wiki.
func InitWiki(ctx context.Context, repo *repo_model.Repository) error {
if repo.HasWiki() {
return nil
}
if err := git.InitRepository(ctx, repo.WikiPath(), true); err != nil {
return fmt.Errorf("InitRepository: %w", err)
} else if err = repo_module.CreateDelegateHooks(repo.WikiPath()); err != nil {
return fmt.Errorf("createDelegateHooks: %w", err)
} else if _, _, err = git.NewCommand(ctx, "symbolic-ref", "HEAD", git.BranchPrefix+DefaultBranch).RunStdString(&git.RunOpts{Dir: repo.WikiPath()}); err != nil {
return fmt.Errorf("unable to set default wiki branch to master: %w", err)
}
return nil
}
// prepareGitPath try to find a suitable file path with file name by the given raw wiki name.
// return: existence, prepared file path with name, error
func prepareGitPath(gitRepo *git.Repository, wikiPath WebPath) (bool, string, error) {
unescaped := string(wikiPath) + ".md"
gitPath := WebPathToGitPath(wikiPath)
// Look for both files
filesInIndex, err := gitRepo.LsTree(DefaultBranch, unescaped, gitPath)
if err != nil {
if strings.Contains(err.Error(), "Not a valid object name master") {
return false, gitPath, nil
}
log.Error("%v", err)
return false, gitPath, err
}
foundEscaped := false
for _, filename := range filesInIndex {
switch filename {
case unescaped:
// if we find the unescaped file return it
return true, unescaped, nil
case gitPath:
foundEscaped = true
}
}
// If not return whether the escaped file exists, and the escaped filename to keep backwards compatibility.
return foundEscaped, gitPath, nil
}
// updateWikiPage adds a new page or edits an existing page in repository wiki.
func updateWikiPage(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, oldWikiName, newWikiName WebPath, content, message string, isNew bool) (err error) {
if err = validateWebPath(newWikiName); err != nil {
return err
}
wikiWorkingPool.CheckIn(fmt.Sprint(repo.ID))
defer wikiWorkingPool.CheckOut(fmt.Sprint(repo.ID))
if err = InitWiki(ctx, repo); err != nil {
return fmt.Errorf("InitWiki: %w", err)
}
hasMasterBranch := git.IsBranchExist(ctx, repo.WikiPath(), DefaultBranch)
basePath, err := repo_module.CreateTemporaryPath("update-wiki")
if err != nil {
return err
}
defer func() {
if err := repo_module.RemoveTemporaryPath(basePath); err != nil {
log.Error("Merge: RemoveTemporaryPath: %s", err)
}
}()
cloneOpts := git.CloneRepoOptions{
Bare: true,
Shared: true,
}
if hasMasterBranch {
cloneOpts.Branch = DefaultBranch
}
if err := git.Clone(ctx, repo.WikiPath(), basePath, cloneOpts); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("failed to clone repository: %s (%w)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(ctx, basePath)
if err != nil {
log.Error("Unable to open temporary repository: %s (%v)", basePath, err)
return fmt.Errorf("failed to open new temporary repository in: %s %w", basePath, err)
}
defer gitRepo.Close()
if hasMasterBranch {
if err := gitRepo.ReadTreeToIndex("HEAD"); err != nil {
log.Error("Unable to read HEAD tree to index in: %s %v", basePath, err)
return fmt.Errorf("fnable to read HEAD tree to index in: %s %w", basePath, err)
}
}
isWikiExist, newWikiPath, err := prepareGitPath(gitRepo, newWikiName)
if err != nil {
return err
}
if isNew {
if isWikiExist {
return repo_model.ErrWikiAlreadyExist{
Title: newWikiPath,
}
}
} else {
// avoid check existence again if wiki name is not changed since gitRepo.LsFiles(...) is not free.
isOldWikiExist := true
oldWikiPath := newWikiPath
if oldWikiName != newWikiName {
isOldWikiExist, oldWikiPath, err = prepareGitPath(gitRepo, oldWikiName)
if err != nil {
return err
}
}
if isOldWikiExist {
err := gitRepo.RemoveFilesFromIndex(oldWikiPath)
if err != nil {
log.Error("%v", err)
return err
}
}
}
// FIXME: The wiki doesn't have lfs support at present - if this changes need to check attributes here
objectHash, err := gitRepo.HashObject(strings.NewReader(content))
if err != nil {
log.Error("%v", err)
return err
}
if err := gitRepo.AddObjectToIndex("100644", objectHash, newWikiPath); err != nil {
log.Error("%v", err)
return err
}
tree, err := gitRepo.WriteTree()
if err != nil {
log.Error("%v", err)
return err
}
commitTreeOpts := git.CommitTreeOpts{
Message: message,
}
committer := doer.NewGitSig()
sign, signingKey, signer, _ := asymkey_service.SignWikiCommit(ctx, repo.WikiPath(), doer)
if sign {
commitTreeOpts.KeyID = signingKey
if repo.GetTrustModel() == repo_model.CommitterTrustModel || repo.GetTrustModel() == repo_model.CollaboratorCommitterTrustModel {
committer = signer
}
} else {
commitTreeOpts.NoGPGSign = true
}
if hasMasterBranch {
commitTreeOpts.Parents = []string{"HEAD"}
}
commitHash, err := gitRepo.CommitTree(doer.NewGitSig(), committer, tree, commitTreeOpts)
if err != nil {
log.Error("%v", err)
return err
}
if err := git.Push(gitRepo.Ctx, basePath, git.PushOptions{
Remote: DefaultRemote,
Branch: fmt.Sprintf("%s:%s%s", commitHash.String(), git.BranchPrefix, DefaultBranch),
Env: repo_module.FullPushingEnvironment(
doer,
doer,
repo,
repo.Name+".wiki",
0,
),
}); err != nil {
log.Error("%v", err)
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %w", err)
}
return nil
}
// AddWikiPage adds a new wiki page with a given wikiPath.
func AddWikiPage(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, wikiName WebPath, content, message string) error {
return updateWikiPage(ctx, doer, repo, "", wikiName, content, message, true)
}
// EditWikiPage updates a wiki page identified by its wikiPath,
// optionally also changing wikiPath.
func EditWikiPage(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, oldWikiName, newWikiName WebPath, content, message string) error {
return updateWikiPage(ctx, doer, repo, oldWikiName, newWikiName, content, message, false)
}
// DeleteWikiPage deletes a wiki page identified by its path.
func DeleteWikiPage(ctx context.Context, doer *user_model.User, repo *repo_model.Repository, wikiName WebPath) (err error) {
wikiWorkingPool.CheckIn(fmt.Sprint(repo.ID))
defer wikiWorkingPool.CheckOut(fmt.Sprint(repo.ID))
if err = InitWiki(ctx, repo); err != nil {
return fmt.Errorf("InitWiki: %w", err)
}
basePath, err := repo_module.CreateTemporaryPath("update-wiki")
if err != nil {
return err
}
defer func() {
if err := repo_module.RemoveTemporaryPath(basePath); err != nil {
log.Error("Merge: RemoveTemporaryPath: %s", err)
}
}()
if err := git.Clone(ctx, repo.WikiPath(), basePath, git.CloneRepoOptions{
Bare: true,
Shared: true,
Branch: DefaultBranch,
}); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("failed to clone repository: %s (%w)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(ctx, basePath)
if err != nil {
log.Error("Unable to open temporary repository: %s (%v)", basePath, err)
return fmt.Errorf("failed to open new temporary repository in: %s %w", basePath, err)
}
defer gitRepo.Close()
if err := gitRepo.ReadTreeToIndex("HEAD"); err != nil {
log.Error("Unable to read HEAD tree to index in: %s %v", basePath, err)
return fmt.Errorf("unable to read HEAD tree to index in: %s %w", basePath, err)
}
found, wikiPath, err := prepareGitPath(gitRepo, wikiName)
if err != nil {
return err
}
if found {
err := gitRepo.RemoveFilesFromIndex(wikiPath)
if err != nil {
return err
}
} else {
return os.ErrNotExist
}
// FIXME: The wiki doesn't have lfs support at present - if this changes need to check attributes here
tree, err := gitRepo.WriteTree()
if err != nil {
return err
}
message := fmt.Sprintf("Delete page %q", wikiName)
commitTreeOpts := git.CommitTreeOpts{
Message: message,
Parents: []string{"HEAD"},
}
committer := doer.NewGitSig()
sign, signingKey, signer, _ := asymkey_service.SignWikiCommit(ctx, repo.WikiPath(), doer)
if sign {
commitTreeOpts.KeyID = signingKey
if repo.GetTrustModel() == repo_model.CommitterTrustModel || repo.GetTrustModel() == repo_model.CollaboratorCommitterTrustModel {
committer = signer
}
} else {
commitTreeOpts.NoGPGSign = true
}
commitHash, err := gitRepo.CommitTree(doer.NewGitSig(), committer, tree, commitTreeOpts)
if err != nil {
return err
}
if err := git.Push(gitRepo.Ctx, basePath, git.PushOptions{
Remote: DefaultRemote,
Branch: fmt.Sprintf("%s:%s%s", commitHash.String(), git.BranchPrefix, DefaultBranch),
Env: repo_module.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %w", err)
}
return nil
}
// DeleteWiki removes the actual and local copy of repository wiki.
func DeleteWiki(ctx context.Context, repo *repo_model.Repository) error {
if err := repo_model.UpdateRepositoryUnits(repo, nil, []unit.Type{unit.TypeWiki}); err != nil {
return err
}
system_model.RemoveAllWithNotice(ctx, "Delete repository wiki", repo.WikiPath())
return nil
}