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gitea/services/wiki/wiki.go

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// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2019 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
package wiki
import (
"context"
"errors"
"fmt"
"os"
"strings"
"code.gitea.io/gitea/models/db"
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/gitrepo"
"code.gitea.io/gitea/modules/log"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/sync"
"code.gitea.io/gitea/modules/util"
asymkey_service "code.gitea.io/gitea/services/asymkey"
repo_service "code.gitea.io/gitea/services/repository"
)
// TODO: use clustered lock (unique queue? or *abuse* cache)
var wikiWorkingPool = sync.NewExclusivePool()
const DefaultRemote = "origin"
// 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, repo.ObjectFormatName); 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").AddDynamicArguments(git.BranchPrefix + repo.DefaultWikiBranch).RunStdString(&git.RunOpts{Dir: repo.WikiPath()}); err != nil {
return fmt.Errorf("unable to set default wiki branch to %q: %w", repo.DefaultWikiBranch, 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, defaultWikiBranch string, wikiPath WebPath) (bool, string, error) {
unescaped := string(wikiPath) + ".md"
gitPath := WebPathToGitPath(wikiPath)
// Look for both files
filesInIndex, err := gitRepo.LsTree(defaultWikiBranch, unescaped, gitPath)
if err != nil {
if strings.Contains(err.Error(), "Not a valid object name") {
return false, gitPath, nil // branch doesn't exist
}
log.Error("Wiki LsTree failed, err: %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
}
Webhook for Wiki changes (#20219) Add support for triggering webhook notifications on wiki changes. This PR contains frontend and backend for webhook notifications on wiki actions (create a new page, rename a page, edit a page and delete a page). The frontend got a new checkbox under the Custom Event -> Repository Events section. There is only one checkbox for create/edit/rename/delete actions, because it makes no sense to separate it and others like releases or packages follow the same schema. ![image](https://user-images.githubusercontent.com/121972/177018803-26851196-831f-4fde-9a4c-9e639b0e0d6b.png) The actions itself are separated, so that different notifications will be executed (with the "action" field). All the webhook receivers implement the new interface method (Wiki) and the corresponding tests. When implementing this, I encounter a little bug on editing a wiki page. Creating and editing a wiki page is technically the same action and will be handled by the ```updateWikiPage``` function. But the function need to know if it is a new wiki page or just a change. This distinction is done by the ```action``` parameter, but this will not be sent by the frontend (on form submit). This PR will fix this by adding the ```action``` parameter with the values ```_new``` or ```_edit```, which will be used by the ```updateWikiPage``` function. I've done integration tests with matrix and gitea (http). ![image](https://user-images.githubusercontent.com/121972/177018795-eb5cdc01-9ba3-483e-a6b7-ed0e313a71fb.png) Fix #16457 Signed-off-by: Aaron Fischer <mail@aaron-fischer.net>
2022-09-04 15:54:23 -04:00
// 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) {
err = repo.MustNotBeArchived()
if err != nil {
return err
}
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)
}
hasDefaultBranch := git.IsBranchExist(ctx, repo.WikiPath(), repo.DefaultWikiBranch)
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 hasDefaultBranch {
cloneOpts.Branch = repo.DefaultWikiBranch
}
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 hasDefaultBranch {
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, repo.DefaultWikiBranch, 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, repo.DefaultWikiBranch, 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,
}
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>
2020-09-19 12:44:55 -04:00
committer := doer.NewGitSig()
sign, signingKey, signer, _ := asymkey_service.SignWikiCommit(ctx, repo, doer)
if sign {
commitTreeOpts.KeyID = signingKey
if repo.GetTrustModel() == repo_model.CommitterTrustModel || repo.GetTrustModel() == repo_model.CollaboratorCommitterTrustModel {
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>
2020-09-19 12:44:55 -04:00
committer = signer
}
} else {
commitTreeOpts.NoGPGSign = true
}
if hasDefaultBranch {
commitTreeOpts.Parents = []string{"HEAD"}
}
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>
2020-09-19 12:44:55 -04:00
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, repo.DefaultWikiBranch),
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) {
err = repo.MustNotBeArchived()
if 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)
}
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: repo.DefaultWikiBranch,
}); 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, repo.DefaultWikiBranch, 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"},
}
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>
2020-09-19 12:44:55 -04:00
committer := doer.NewGitSig()
sign, signingKey, signer, _ := asymkey_service.SignWikiCommit(ctx, repo, doer)
if sign {
commitTreeOpts.KeyID = signingKey
if repo.GetTrustModel() == repo_model.CommitterTrustModel || repo.GetTrustModel() == repo_model.CollaboratorCommitterTrustModel {
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>
2020-09-19 12:44:55 -04:00
committer = signer
}
} else {
commitTreeOpts.NoGPGSign = true
}
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>
2020-09-19 12:44:55 -04:00
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, repo.DefaultWikiBranch),
Env: repo_module.FullPushingEnvironment(
doer,
doer,
repo,
repo.Name+".wiki",
0,
),
}); 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_service.UpdateRepositoryUnits(ctx, repo, nil, []unit.Type{unit.TypeWiki}); err != nil {
return err
}
system_model.RemoveAllWithNotice(ctx, "Delete repository wiki", repo.WikiPath())
return nil
}
func ChangeDefaultWikiBranch(ctx context.Context, repo *repo_model.Repository, newBranch string) error {
if !git.IsValidRefPattern(newBranch) {
return fmt.Errorf("invalid branch name: %s", newBranch)
}
return db.WithTx(ctx, func(ctx context.Context) error {
repo.DefaultWikiBranch = newBranch
if err := repo_model.UpdateRepositoryCols(ctx, repo, "default_wiki_branch"); err != nil {
return fmt.Errorf("unable to update database: %w", err)
}
oldDefBranch, err := gitrepo.GetWikiDefaultBranch(ctx, repo)
if err != nil {
return fmt.Errorf("unable to get default branch: %w", err)
}
if oldDefBranch == newBranch {
return nil
}
gitRepo, err := gitrepo.OpenWikiRepository(ctx, repo)
if errors.Is(err, util.ErrNotExist) {
return nil // no git repo on storage, no need to do anything else
} else if err != nil {
return fmt.Errorf("unable to open repository: %w", err)
}
defer gitRepo.Close()
err = gitRepo.RenameBranch(oldDefBranch, newBranch)
if err != nil {
return fmt.Errorf("unable to rename default branch: %w", err)
}
return nil
})
}