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Handle more pathological branch and tag names (#11843) (#11863)

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Backport #11843

It's possible to push quite pathological appearing branch names to gitea
using git push gitea reasonable-branch:refs/heads/-- at which point
large parts of the UI will break. Similarly you can git push origin
reasonable-tag:refs/tags/-- which wil return an error.

This PR fixes the problems these cause. It also changes the code from
creating branches to pushing to ensure that branch restoration has to
pass hooks.

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

Co-authored-by: techknowlogick <techknowlogick@gitea.io>
This commit is contained in:
zeripath
2020-06-12 19:01:44 +01:00
committed by GitHub
parent ef2f18964e
commit 320031fce6
7 changed files with 41 additions and 87 deletions
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72
modules/repository/branch.go
View File

@ -9,7 +9,6 @@ import (
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
)
// GetBranch returns a branch by its name
@ -74,39 +73,9 @@ func CreateNewBranch(doer *models.User, repo *models.Repository, oldBranchName,
return fmt.Errorf("OldBranch: %s does not exist. Cannot create new branch from this", oldBranchName)
}
basePath, err := models.CreateTemporaryPath("branch-maker")
if err != nil {
return err
}
defer func() {
if err := models.RemoveTemporaryPath(basePath); err != nil {
log.Error("CreateNewBranch: RemoveTemporaryPath: %s", err)
}
}()
if err := git.Clone(repo.RepoPath(), basePath, git.CloneRepoOptions{
Bare: true,
Shared: true,
}); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("Failed to clone repository: %s (%v)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(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 %v", basePath, err)
}
defer gitRepo.Close()
if err = gitRepo.CreateBranch(branchName, oldBranchName); err != nil {
log.Error("Unable to create branch: %s from %s. (%v)", branchName, oldBranchName, err)
return fmt.Errorf("Unable to create branch: %s from %s. (%v)", branchName, oldBranchName, err)
}
if err = git.Push(basePath, git.PushOptions{
Remote: "origin",
Branch: branchName,
if err := git.Push(repo.RepoPath(), git.PushOptions{
Remote: repo.RepoPath(),
Branch: fmt.Sprintf("%s:%s%s", oldBranchName, git.BranchPrefix, branchName),
Env: models.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
@ -124,39 +93,10 @@ func CreateNewBranchFromCommit(doer *models.User, repo *models.Repository, commi
if err := checkBranchName(repo, branchName); err != nil {
return err
}
basePath, err := models.CreateTemporaryPath("branch-maker")
if err != nil {
return err
}
defer func() {
if err := models.RemoveTemporaryPath(basePath); err != nil {
log.Error("CreateNewBranchFromCommit: RemoveTemporaryPath: %s", err)
}
}()
if err := git.Clone(repo.RepoPath(), basePath, git.CloneRepoOptions{
Bare: true,
Shared: true,
}); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("Failed to clone repository: %s (%v)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(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 %v", basePath, err)
}
defer gitRepo.Close()
if err = gitRepo.CreateBranch(branchName, commit); err != nil {
log.Error("Unable to create branch: %s from %s. (%v)", branchName, commit, err)
return fmt.Errorf("Unable to create branch: %s from %s. (%v)", branchName, commit, err)
}
if err = git.Push(basePath, git.PushOptions{
Remote: "origin",
Branch: branchName,
if err := git.Push(repo.RepoPath(), git.PushOptions{
Remote: repo.RepoPath(),
Branch: fmt.Sprintf("%s:%s%s", commit, git.BranchPrefix, branchName),
Env: models.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {