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Ensure rejected push to refs/pull/index/head fails nicely (#11724) (#11809)

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Backport #11724

A pre-receive hook that rejects pushes to refs/pull/index/head
will cause a broken PR which causes an internal server error
whenever it is viewed. This PR handles prevents the internal server
error by handling non-existent pr heads and sends a flash error
informing the creator there was a problem.

Signed-off-by: Andrew Thornton <art27@cantab.net>
This commit is contained in:
zeripath 2020-06-08 20:00:12 +01:00 committed by GitHub
parent 9749c35656
commit c52f81eecc
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
2 changed files with 37 additions and 5 deletions
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32
routers/repo/pull.go
View file

@ -428,6 +428,20 @@ func PrepareViewPullInfo(ctx *context.Context, issue *models.Issue) *git.Compare
sha, err := baseGitRepo.GetRefCommitID(pull.GetGitRefName())
if err != nil {
if git.IsErrNotExist(err) {
ctx.Data["IsPullRequestBroken"] = true
if pull.IsSameRepo() {
ctx.Data["HeadTarget"] = pull.HeadBranch
} else if pull.HeadRepo == nil {
ctx.Data["HeadTarget"] = "<deleted>:" + pull.HeadBranch
} else {
ctx.Data["HeadTarget"] = pull.HeadRepo.OwnerName + ":" + pull.HeadBranch
}
ctx.Data["BaseTarget"] = pull.BaseBranch
ctx.Data["NumCommits"] = 0
ctx.Data["NumFiles"] = 0
return nil
}
ctx.ServerError(fmt.Sprintf("GetRefCommitID(%s)", pull.GetGitRefName()), err)
return nil
}
@ -462,12 +476,10 @@ func PrepareViewPullInfo(ctx *context.Context, issue *models.Issue) *git.Compare
ctx.Data["IsPullRequestBroken"] = true
if pull.IsSameRepo() {
ctx.Data["HeadTarget"] = pull.HeadBranch
} else if pull.HeadRepo == nil {
ctx.Data["HeadTarget"] = "<deleted>:" + pull.HeadBranch
} else {
if pull.HeadRepo == nil {
ctx.Data["HeadTarget"] = "<deleted>:" + pull.HeadBranch
} else {
ctx.Data["HeadTarget"] = pull.HeadRepo.OwnerName + ":" + pull.HeadBranch
}
ctx.Data["HeadTarget"] = pull.HeadRepo.OwnerName + ":" + pull.HeadBranch
}
}
@ -950,6 +962,16 @@ func CompareAndPullRequestPost(ctx *context.Context, form auth.CreateIssueForm)
if models.IsErrUserDoesNotHaveAccessToRepo(err) {
ctx.Error(400, "UserDoesNotHaveAccessToRepo", err.Error())
return
} else if git.IsErrPushRejected(err) {
pushrejErr := err.(*git.ErrPushRejected)
message := pushrejErr.Message
if len(message) == 0 {
ctx.Flash.Error(ctx.Tr("repo.pulls.push_rejected_no_message"))
} else {
ctx.Flash.Error(ctx.Tr("repo.pulls.push_rejected", utils.SanitizeFlashErrorString(pushrejErr.Message)))
}
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pullIssue.Index))
return
}
ctx.ServerError("NewPullRequest", err)
return

10
services/pull/pull.go
View file

@ -399,6 +399,16 @@ func PushToBaseRepo(pr *models.PullRequest) (err error) {
// Use InternalPushingEnvironment here because we know that pre-receive and post-receive do not run on a refs/pulls/...
Env: models.InternalPushingEnvironment(pr.Issue.Poster, pr.BaseRepo),
}); err != nil {
if git.IsErrPushOutOfDate(err) {
// This should not happen as we're using force!
log.Error("Unable to push PR head for %s#%d (%-v:%s) due to ErrPushOfDate: %v", pr.BaseRepo.FullName(), pr.Index, pr.BaseRepo, headFile, err)
return err
} else if git.IsErrPushRejected(err) {
rejectErr := err.(*git.ErrPushRejected)
log.Info("Unable to push PR head for %s#%d (%-v:%s) due to rejection:\nStdout: %s\nStderr: %s\nError: %v", pr.BaseRepo.FullName(), pr.Index, pr.BaseRepo, headFile, rejectErr.StdOut, rejectErr.StdErr, rejectErr.Err)
return err
}
log.Error("Unable to push PR head for %s#%d (%-v:%s) due to Error: %v", pr.BaseRepo.FullName(), pr.Index, pr.BaseRepo, headFile, err)
return fmt.Errorf("Push: %s:%s %s:%s %v", pr.HeadRepo.FullName(), pr.HeadBranch, pr.BaseRepo.FullName(), headFile, err)
}