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Handle push rejection in branch and upload (#10854)

Browse source 
* Handle push rejections and push out-of-date in branch creation and
file upload.
* Remove the duplicated sanitize from services/pull/merge
* Move the errors Err(Merge)PushOutOfDate and ErrPushRejected to
modules/git
* Handle errors better in the upload file dialogs

Fix #10460

Signed-off-by: Andrew Thornton <art27@cantab.net>
Co-authored-by: guillep2k <18600385+guillep2k@users.noreply.github.com>
This commit is contained in:
zeripath 2020-03-28 04:13:18 +00:00 committed by GitHub
parent cac30abefc
commit 7cd47046ea
No known key found for this signature in database
GPG key ID: 4AEE18F83AFDEB23
12 changed files with 197 additions and 120 deletions
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66
models/error.go
View file

@ -7,7 +7,6 @@ package models
import (
"fmt"
"strings"
"code.gitea.io/gitea/modules/git"
)
@ -1388,71 +1387,6 @@ func (err ErrMergeUnrelatedHistories) Error() string {
return fmt.Sprintf("Merge UnrelatedHistories Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// ErrMergePushOutOfDate represents an error if merging fails due to unrelated histories
type ErrMergePushOutOfDate struct {
Style MergeStyle
StdOut string
StdErr string
Err error
}
// IsErrMergePushOutOfDate checks if an error is a ErrMergePushOutOfDate.
func IsErrMergePushOutOfDate(err error) bool {
_, ok := err.(ErrMergePushOutOfDate)
return ok
}
func (err ErrMergePushOutOfDate) Error() string {
return fmt.Sprintf("Merge PushOutOfDate Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// ErrPushRejected represents an error if merging fails due to rejection from a hook
type ErrPushRejected struct {
Style MergeStyle
Message string
StdOut string
StdErr string
Err error
}
// IsErrPushRejected checks if an error is a ErrPushRejected.
func IsErrPushRejected(err error) bool {
_, ok := err.(ErrPushRejected)
return ok
}
func (err ErrPushRejected) Error() string {
return fmt.Sprintf("Merge PushRejected Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// GenerateMessage generates the remote message from the stderr
func (err *ErrPushRejected) GenerateMessage() {
messageBuilder := &strings.Builder{}
i := strings.Index(err.StdErr, "remote: ")
if i < 0 {
err.Message = ""
return
}
for {
if len(err.StdErr) <= i+8 {
break
}
if err.StdErr[i:i+8] != "remote: " {
break
}
i += 8
nl := strings.IndexByte(err.StdErr[i:], '\n')
if nl >= 0 {
messageBuilder.WriteString(err.StdErr[i : i+nl+1])
i = i + nl + 1
} else {
messageBuilder.WriteString(err.StdErr[i:])
i = len(err.StdErr)
}
}
err.Message = strings.TrimSpace(messageBuilder.String())
}
// ErrRebaseConflicts represents an error if rebase fails with a conflict
type ErrRebaseConflicts struct {
Style MergeStyle

74
modules/git/error.go
View file

@ -6,6 +6,7 @@ package git
import (
"fmt"
"strings"
"time"
)
@ -85,3 +86,76 @@ func IsErrBranchNotExist(err error) bool {
func (err ErrBranchNotExist) Error() string {
return fmt.Sprintf("branch does not exist [name: %s]", err.Name)
}
// ErrPushOutOfDate represents an error if merging fails due to unrelated histories
type ErrPushOutOfDate struct {
StdOut string
StdErr string
Err error
}
// IsErrPushOutOfDate checks if an error is a ErrPushOutOfDate.
func IsErrPushOutOfDate(err error) bool {
_, ok := err.(*ErrPushOutOfDate)
return ok
}
func (err *ErrPushOutOfDate) Error() string {
return fmt.Sprintf("PushOutOfDate Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// Unwrap unwraps the underlying error
func (err *ErrPushOutOfDate) Unwrap() error {
return fmt.Errorf("%v - %s", err.Err, err.StdErr)
}
// ErrPushRejected represents an error if merging fails due to rejection from a hook
type ErrPushRejected struct {
Message string
StdOut string
StdErr string
Err error
}
// IsErrPushRejected checks if an error is a ErrPushRejected.
func IsErrPushRejected(err error) bool {
_, ok := err.(*ErrPushRejected)
return ok
}
func (err *ErrPushRejected) Error() string {
return fmt.Sprintf("PushRejected Error: %v: %s\n%s", err.Err, err.StdErr, err.StdOut)
}
// Unwrap unwraps the underlying error
func (err *ErrPushRejected) Unwrap() error {
return fmt.Errorf("%v - %s", err.Err, err.StdErr)
}
// GenerateMessage generates the remote message from the stderr
func (err *ErrPushRejected) GenerateMessage() {
messageBuilder := &strings.Builder{}
i := strings.Index(err.StdErr, "remote: ")
if i < 0 {
err.Message = ""
return
}
for {
if len(err.StdErr) <= i+8 {
break
}
if err.StdErr[i:i+8] != "remote: " {
break
}
i += 8
nl := strings.IndexByte(err.StdErr[i:], '\n')
if nl >= 0 {
messageBuilder.WriteString(err.StdErr[i : i+nl+1])
i = i + nl + 1
} else {
messageBuilder.WriteString(err.StdErr[i:])
i = len(err.StdErr)
}
}
err.Message = strings.TrimSpace(messageBuilder.String())
}

26
modules/git/repo.go
View file

@ -255,7 +255,31 @@ func Push(repoPath string, opts PushOptions) error {
cmd.AddArguments("-f")
}
cmd.AddArguments("--", opts.Remote, opts.Branch)
_, err := cmd.RunInDirWithEnv(repoPath, opts.Env)
var outbuf, errbuf strings.Builder
err := cmd.RunInDirTimeoutEnvPipeline(opts.Env, -1, repoPath, &outbuf, &errbuf)
if err != nil {
if strings.Contains(errbuf.String(), "non-fast-forward") {
return &ErrPushOutOfDate{
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,
}
} else if strings.Contains(errbuf.String(), "! [remote rejected]") {
err := &ErrPushRejected{
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,
}
err.GenerateMessage()
return err
}
}
if errbuf.Len() > 0 && err != nil {
return fmt.Errorf("%v - %s", err, errbuf.String())
}
return err
}

35
modules/repofiles/temp_repo.go
View file

@ -242,30 +242,21 @@ func (t *TemporaryUploadRepository) CommitTreeWithDate(author, committer *models
func (t *TemporaryUploadRepository) Push(doer *models.User, commitHash string, branch string) error {
// Because calls hooks we need to pass in the environment
env := models.PushingEnvironment(doer, t.repo)
stdout := &strings.Builder{}
stderr := &strings.Builder{}
if err := git.NewCommand("push", t.repo.RepoPath(), strings.TrimSpace(commitHash)+":refs/heads/"+strings.TrimSpace(branch)).RunInDirTimeoutEnvPipeline(env, -1, t.basePath, stdout, stderr); err != nil {
errString := stderr.String()
if strings.Contains(errString, "non-fast-forward") {
return models.ErrMergePushOutOfDate{
StdOut: stdout.String(),
StdErr: errString,
Err: err,
}
} else if strings.Contains(errString, "! [remote rejected]") {
log.Error("Unable to push back to repo from temporary repo due to rejection: %s (%s)\nStdout: %s\nStderr: %s\nError: %v",
t.repo.FullName(), t.basePath, stdout, errString, err)
err := models.ErrPushRejected{
StdOut: stdout.String(),
StdErr: errString,
Err: err,
}
err.GenerateMessage()
if err := git.Push(t.basePath, git.PushOptions{
Remote: t.repo.RepoPath(),
Branch: strings.TrimSpace(commitHash) + ":refs/heads/" + strings.TrimSpace(branch),
Env: env,
}); err != nil {
if git.IsErrPushOutOfDate(err) {
return err
} else if git.IsErrPushRejected(err) {
rejectErr := err.(*git.ErrPushRejected)
log.Info("Unable to push back to repo from temporary repo due to rejection: %s (%s)\nStdout: %s\nStderr: %s\nError: %v",
t.repo.FullName(), t.basePath, rejectErr.StdOut, rejectErr.StdErr, rejectErr.Err)
return err
}
log.Error("Unable to push back to repo from temporary repo: %s (%s)\nStdout: %s\nError: %v",
t.repo.FullName(), t.basePath, stdout, err)
log.Error("Unable to push back to repo from temporary repo: %s (%s)\nError: %v",
t.repo.FullName(), t.basePath, err)
return fmt.Errorf("Unable to push back to repo from temporary repo: %s (%s) Error: %v",
t.repo.FullName(), t.basePath, err)
}

1
modules/repofiles/update.go
View file

@ -446,6 +446,7 @@ func CreateOrUpdateRepoFile(repo *models.Repository, doer *models.User, opts *Up
// Then push this tree to NewBranch
if err := t.Push(doer, commitHash, opts.NewBranch); err != nil {
log.Error("%T %v", err, err)
return nil, err
}

6
modules/repository/branch.go
View file

@ -109,6 +109,9 @@ func CreateNewBranch(doer *models.User, repo *models.Repository, oldBranchName,
Branch: branchName,
Env: models.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %v", err)
}
@ -156,6 +159,9 @@ func CreateNewBranchFromCommit(doer *models.User, repo *models.Repository, commi
Branch: branchName,
Env: models.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %v", err)
}

6
routers/api/v1/repo/pull.go
View file

@ -678,11 +678,11 @@ func MergePullRequest(ctx *context.APIContext, form auth.MergePullRequestForm) {
} else if models.IsErrMergeUnrelatedHistories(err) {
conflictError := err.(models.ErrMergeUnrelatedHistories)
ctx.JSON(http.StatusConflict, conflictError)
} else if models.IsErrMergePushOutOfDate(err) {
} else if git.IsErrPushOutOfDate(err) {
ctx.Error(http.StatusConflict, "Merge", "merge push out of date")
return
} else if models.IsErrPushRejected(err) {
errPushRej := err.(models.ErrPushRejected)
} else if git.IsErrPushRejected(err) {
errPushRej := err.(*git.ErrPushRejected)
if len(errPushRej.Message) == 0 {
ctx.Error(http.StatusConflict, "Merge", "PushRejected without remote error message")
return

16
routers/repo/branch.go
View file

@ -17,6 +17,7 @@ import (
"code.gitea.io/gitea/modules/repofiles"
repo_module "code.gitea.io/gitea/modules/repository"
"code.gitea.io/gitea/modules/util"
"code.gitea.io/gitea/routers/utils"
)
const (
@ -335,9 +336,8 @@ func CreateBranch(ctx *context.Context, form auth.NewBranchForm) {
ctx.Redirect(ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL())
return
}
if models.IsErrBranchAlreadyExists(err) {
e := err.(models.ErrBranchAlreadyExists)
ctx.Flash.Error(ctx.Tr("repo.branch.branch_already_exists", e.BranchName))
if models.IsErrBranchAlreadyExists(err) || git.IsErrPushOutOfDate(err) {
ctx.Flash.Error(ctx.Tr("repo.branch.branch_already_exists", form.NewBranchName))
ctx.Redirect(ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL())
return
}
@ -347,6 +347,16 @@ func CreateBranch(ctx *context.Context, form auth.NewBranchForm) {
ctx.Redirect(ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL())
return
}
if git.IsErrPushRejected(err) {
e := err.(*git.ErrPushRejected)
if len(e.Message) == 0 {
ctx.Flash.Error(ctx.Tr("repo.editor.push_rejected_no_message"))
} else {
ctx.Flash.Error(ctx.Tr("repo.editor.push_rejected", utils.SanitizeFlashErrorString(e.Message)))
}
ctx.Redirect(ctx.Repo.RepoLink + "/src/" + ctx.Repo.BranchNameSubURL())
return
}
ctx.ServerError("CreateNewBranch", err)
return

57
routers/repo/editor.go
View file

@ -228,6 +228,9 @@ func editFilePost(ctx *context.Context, form auth.EditRepoFileForm, isNewFile bo
// This is where we handle all the errors thrown by repofiles.CreateOrUpdateRepoFile
if git.IsErrNotExist(err) {
ctx.RenderWithErr(ctx.Tr("repo.editor.file_editing_no_longer_exists", ctx.Repo.TreePath), tplEditFile, &form)
} else if models.IsErrLFSFileLocked(err) {
ctx.Data["Err_TreePath"] = true
ctx.RenderWithErr(ctx.Tr("repo.editor.upload_file_is_locked", err.(models.ErrLFSFileLocked).Path, err.(models.ErrLFSFileLocked).UserName), tplEditFile, &form)
} else if models.IsErrFilenameInvalid(err) {
ctx.Data["Err_TreePath"] = true
ctx.RenderWithErr(ctx.Tr("repo.editor.filename_is_invalid", form.TreePath), tplEditFile, &form)
@ -265,10 +268,12 @@ func editFilePost(ctx *context.Context, form auth.EditRepoFileForm, isNewFile bo
} else {
ctx.Error(500, err.Error())
}
} else if models.IsErrCommitIDDoesNotMatch(err) || models.IsErrMergePushOutOfDate(err) {
} else if models.IsErrCommitIDDoesNotMatch(err) {
ctx.RenderWithErr(ctx.Tr("repo.editor.file_changed_while_editing", ctx.Repo.RepoLink+"/compare/"+form.LastCommit+"..."+ctx.Repo.CommitID), tplEditFile, &form)
} else if models.IsErrPushRejected(err) {
errPushRej := err.(models.ErrPushRejected)
} else if git.IsErrPushOutOfDate(err) {
ctx.RenderWithErr(ctx.Tr("repo.editor.file_changed_while_editing", ctx.Repo.RepoLink+"/compare/"+form.LastCommit+"..."+form.NewBranchName), tplEditFile, &form)
} else if git.IsErrPushRejected(err) {
errPushRej := err.(*git.ErrPushRejected)
if len(errPushRej.Message) == 0 {
ctx.RenderWithErr(ctx.Tr("repo.editor.push_rejected_no_message"), tplEditFile, &form)
} else {
@ -436,10 +441,10 @@ func DeleteFilePost(ctx *context.Context, form auth.DeleteRepoFileForm) {
} else {
ctx.Error(500, err.Error())
}
} else if models.IsErrCommitIDDoesNotMatch(err) || models.IsErrMergePushOutOfDate(err) {
} else if models.IsErrCommitIDDoesNotMatch(err) || git.IsErrPushOutOfDate(err) {
ctx.RenderWithErr(ctx.Tr("repo.editor.file_changed_while_deleting", ctx.Repo.RepoLink+"/compare/"+form.LastCommit+"..."+ctx.Repo.CommitID), tplDeleteFile, &form)
} else if models.IsErrPushRejected(err) {
errPushRej := err.(models.ErrPushRejected)
} else if git.IsErrPushRejected(err) {
errPushRej := err.(*git.ErrPushRejected)
if len(errPushRej.Message) == 0 {
ctx.RenderWithErr(ctx.Tr("repo.editor.push_rejected_no_message"), tplDeleteFile, &form)
} else {
@ -602,10 +607,48 @@ func UploadFilePost(ctx *context.Context, form auth.UploadRepoFileForm) {
Message: message,
Files: form.Files,
}); err != nil {
ctx.Data["Err_TreePath"] = true
if models.IsErrLFSFileLocked(err) {
ctx.Data["Err_TreePath"] = true
ctx.RenderWithErr(ctx.Tr("repo.editor.upload_file_is_locked", err.(models.ErrLFSFileLocked).Path, err.(models.ErrLFSFileLocked).UserName), tplUploadFile, &form)
} else if models.IsErrFilenameInvalid(err) {
ctx.Data["Err_TreePath"] = true
ctx.RenderWithErr(ctx.Tr("repo.editor.filename_is_invalid", form.TreePath), tplUploadFile, &form)
} else if models.IsErrFilePathInvalid(err) {
ctx.Data["Err_TreePath"] = true
fileErr := err.(models.ErrFilePathInvalid)
switch fileErr.Type {
case git.EntryModeSymlink:
ctx.RenderWithErr(ctx.Tr("repo.editor.file_is_a_symlink", fileErr.Path), tplUploadFile, &form)
case git.EntryModeTree:
ctx.RenderWithErr(ctx.Tr("repo.editor.filename_is_a_directory", fileErr.Path), tplUploadFile, &form)
case git.EntryModeBlob:
ctx.RenderWithErr(ctx.Tr("repo.editor.directory_is_a_file", fileErr.Path), tplUploadFile, &form)
default:
ctx.Error(500, err.Error())
}
} else if models.IsErrRepoFileAlreadyExists(err) {
ctx.Data["Err_TreePath"] = true
ctx.RenderWithErr(ctx.Tr("repo.editor.file_already_exists", form.TreePath), tplUploadFile, &form)
} else if git.IsErrBranchNotExist(err) {
branchErr := err.(git.ErrBranchNotExist)
ctx.RenderWithErr(ctx.Tr("repo.editor.branch_does_not_exist", branchErr.Name), tplUploadFile, &form)
} else if models.IsErrBranchAlreadyExists(err) {
// For when a user specifies a new branch that already exists
ctx.Data["Err_NewBranchName"] = true
branchErr := err.(models.ErrBranchAlreadyExists)
ctx.RenderWithErr(ctx.Tr("repo.editor.branch_already_exists", branchErr.BranchName), tplUploadFile, &form)
} else if git.IsErrPushOutOfDate(err) {
ctx.RenderWithErr(ctx.Tr("repo.editor.file_changed_while_editing", ctx.Repo.RepoLink+"/compare/"+ctx.Repo.CommitID+"..."+form.NewBranchName), tplUploadFile, &form)
} else if git.IsErrPushRejected(err) {
errPushRej := err.(*git.ErrPushRejected)
if len(errPushRej.Message) == 0 {
ctx.RenderWithErr(ctx.Tr("repo.editor.push_rejected_no_message"), tplUploadFile, &form)
} else {
ctx.RenderWithErr(ctx.Tr("repo.editor.push_rejected", utils.SanitizeFlashErrorString(errPushRej.Message)), tplUploadFile, &form)
}
} else {
// os.ErrNotExist - upload file missing in the intervening time?!
log.Error("Error during upload to repo: %-v to filepath: %s on %s from %s: %v", ctx.Repo.Repository, form.TreePath, oldBranchName, form.NewBranchName, err)
ctx.RenderWithErr(ctx.Tr("repo.editor.unable_to_upload_files", form.TreePath, err), tplUploadFile, &form)
}
return

18
routers/repo/pull.go
View file

@ -10,7 +10,6 @@ import (
"container/list"
"crypto/subtle"
"fmt"
"html"
"net/http"
"path"
"strings"
@ -668,18 +667,9 @@ func UpdatePullRequest(ctx *context.Context) {
message := fmt.Sprintf("Merge branch '%s' into %s", issue.PullRequest.BaseBranch, issue.PullRequest.HeadBranch)
if err = pull_service.Update(issue.PullRequest, ctx.User, message); err != nil {
sanitize := func(x string) string {
runes := []rune(x)
if len(runes) > 512 {
x = "..." + string(runes[len(runes)-512:])
}
return strings.Replace(html.EscapeString(x), "\n", "<br>", -1)
}
if models.IsErrMergeConflicts(err) {
conflictError := err.(models.ErrMergeConflicts)
ctx.Flash.Error(ctx.Tr("repo.pulls.merge_conflict", sanitize(conflictError.StdErr), sanitize(conflictError.StdOut)))
ctx.Flash.Error(ctx.Tr("repo.pulls.merge_conflict", utils.SanitizeFlashErrorString(conflictError.StdErr), utils.SanitizeFlashErrorString(conflictError.StdOut)))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(issue.Index))
return
}
@ -814,14 +804,14 @@ func MergePullRequest(ctx *context.Context, form auth.MergePullRequestForm) {
ctx.Flash.Error(ctx.Tr("repo.pulls.unrelated_histories"))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pr.Index))
return
} else if models.IsErrMergePushOutOfDate(err) {
} else if git.IsErrPushOutOfDate(err) {
log.Debug("MergePushOutOfDate error: %v", err)
ctx.Flash.Error(ctx.Tr("repo.pulls.merge_out_of_date"))
ctx.Redirect(ctx.Repo.RepoLink + "/pulls/" + com.ToStr(pr.Index))
return
} else if models.IsErrPushRejected(err) {
} else if git.IsErrPushRejected(err) {
log.Debug("MergePushRejected error: %v", err)
pushrejErr := err.(models.ErrPushRejected)
pushrejErr := err.(*git.ErrPushRejected)
message := pushrejErr.Message
if len(message) == 0 {
ctx.Flash.Error(ctx.Tr("repo.pulls.push_rejected_no_message"))

6
services/pull/merge.go
View file

@ -385,15 +385,13 @@ func rawMerge(pr *models.PullRequest, doer *models.User, mergeStyle models.Merge
// Push back to upstream.
if err := git.NewCommand("push", "origin", baseBranch+":"+pr.BaseBranch).RunInDirTimeoutEnvPipeline(env, -1, tmpBasePath, &outbuf, &errbuf); err != nil {
if strings.Contains(errbuf.String(), "non-fast-forward") {
return "", models.ErrMergePushOutOfDate{
Style: mergeStyle,
return "", &git.ErrPushOutOfDate{
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,
}
} else if strings.Contains(errbuf.String(), "! [remote rejected]") {
err := models.ErrPushRejected{
Style: mergeStyle,
err := &git.ErrPushRejected{
StdOut: outbuf.String(),
StdErr: errbuf.String(),
Err: err,

6
services/wiki/wiki.go
View file

@ -212,6 +212,9 @@ func updateWikiPage(doer *models.User, repo *models.Repository, oldWikiName, new
),
}); err != nil {
log.Error("%v", err)
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %v", err)
}
@ -316,6 +319,9 @@ func DeleteWikiPage(doer *models.User, repo *models.Repository, wikiName string)
Branch: fmt.Sprintf("%s:%s%s", commitHash.String(), git.BranchPrefix, "master"),
Env: models.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %v", err)
}