Fix some trivial problems (#36336)

1. correctly parse git protocol's "OldCommit NewCommit RefName" line, it
should be explicitly split by space
2. add missing "return" in CreatePullRequest
3. add comments for "/user.keys" and "/user.gpg" outputs
4. trim space for the "commit status context name" to follow the same
behavior of git_model.NewCommitStatus

cmd/hook.go

@@ -163,6 +163,14 @@ func (n *nilWriter) WriteString(s string) (int, error) {
 	return len(s), nil
 }
 
+func parseGitHookCommitRefLine(line string) (oldCommitID, newCommitID string, refFullName git.RefName, ok bool) {
+	fields := strings.Split(line, " ")
+	if len(fields) != 3 {
+		return "", "", "", false
+	}
+	return fields[0], fields[1], git.RefName(fields[2]), true
+}
+
 func runHookPreReceive(ctx context.Context, c *cli.Command) error {
 	if isInternal, _ := strconv.ParseBool(os.Getenv(repo_module.EnvIsInternal)); isInternal {
 		return nil
@@ -228,14 +236,11 @@ Gitea or set your environment appropriately.`, "")
 			continue
 		}
 
-		fields := bytes.Fields(scanner.Bytes())
-		if len(fields) != 3 {
+		oldCommitID, newCommitID, refFullName, ok := parseGitHookCommitRefLine(scanner.Text())
+		if !ok {
 			continue
 		}
 
-		oldCommitID := string(fields[0])
-		newCommitID := string(fields[1])
-		refFullName := git.RefName(fields[2])
 		total++
 		lastline++
 
@@ -378,16 +383,13 @@ Gitea or set your environment appropriately.`, "")
 			continue
 		}
 
-		fields := bytes.Fields(scanner.Bytes())
-		if len(fields) != 3 {
+		var ok bool
+		oldCommitIDs[count], newCommitIDs[count], refFullNames[count], ok = parseGitHookCommitRefLine(scanner.Text())
+		if !ok {
 			continue
 		}
 
 		fmt.Fprintf(out, ".")
-		oldCommitIDs[count] = string(fields[0])
-		newCommitIDs[count] = string(fields[1])
-		refFullNames[count] = git.RefName(fields[2])
-
 		commitID, _ := git.NewIDFromString(newCommitIDs[count])
 		if refFullNames[count] == git.BranchPrefix+"master" && !commitID.IsZero() && count == total {
 			masterPushed = true

cmd/hook_test.go

@@ -39,3 +39,17 @@ func TestPktLine(t *testing.T) {
 	assert.NoError(t, err)
 	assert.Equal(t, []byte("0007a\nb"), w.Bytes())
 }
+
+func TestParseGitHookCommitRefLine(t *testing.T) {
+	oldCommitID, newCommitID, refName, ok := parseGitHookCommitRefLine("a b c")
+	assert.True(t, ok)
+	assert.Equal(t, "a", oldCommitID)
+	assert.Equal(t, "b", newCommitID)
+	assert.Equal(t, "c", string(refName))
+
+	_, _, _, ok = parseGitHookCommitRefLine("a\tb\tc")
+	assert.False(t, ok)
+
+	_, _, _, ok = parseGitHookCommitRefLine("a b")
+	assert.False(t, ok)
+}

routers/api/v1/repo/pull.go

@@ -500,6 +500,7 @@ func CreatePullRequest(ctx *context.APIContext) {
 	unitPullRequest, err := ctx.Repo.Repository.GetUnit(ctx, unit.TypePullRequests)
 	if err != nil {
 		ctx.APIErrorInternal(err)
+		return
 	}
 
 	prIssue := &issues_model.Issue{

routers/web/user/home.go

@@ -660,6 +660,8 @@ func ShowSSHKeys(ctx *context.Context) {
 	}
 
 	var buf bytes.Buffer
+	// "authorized_keys" file format: "#" followed by comment line per key
+	buf.WriteString("# Gitea isn't a key server. The keys are exported as the user uploaded and might not have been fully verified.\n")
 	for i := range keys {
 		buf.WriteString(keys[i].OmitEmail())
 		buf.WriteString("\n")
@@ -695,6 +697,8 @@ func ShowGPGKeys(ctx *context.Context) {
 	var buf bytes.Buffer
 
 	headers := make(map[string]string)
+	// https://www.rfc-editor.org/rfc/rfc4880
+	headers["Comment"] = "Gitea isn't a key server. The keys are exported as the user uploaded and might not have been fully verified."
 	if len(failedEntitiesID) > 0 { // If some key need re-import to be exported
 		headers["Note"] = "The keys with the following IDs couldn't be exported and need to be reuploaded " + strings.Join(failedEntitiesID, ", ")
 	} else if len(entities) == 0 {

services/actions/commit_status.go

@@ -9,6 +9,7 @@ import (
 	"fmt"
 	"path"
 	"strconv"
+	"strings"
 
 	actions_model "code.gitea.io/gitea/models/actions"
 	"code.gitea.io/gitea/models/db"
@@ -129,6 +130,7 @@ func createCommitStatus(ctx context.Context, repo *repo_model.Repository, event,
 		runName = wfs[0].Name
 	}
 	ctxName := fmt.Sprintf("%s / %s (%s)", runName, job.Name, event)
+	ctxName = strings.TrimSpace(ctxName) // git_model.NewCommitStatus also trims spaces
 	state := toCommitStatus(job.Status)
 	if statuses, err := git_model.GetLatestCommitStatus(ctx, repo.ID, commitID, db.ListOptionsAll); err == nil {
 		for _, v := range statuses {

tests/integration/user_test.go

@@ -27,6 +27,12 @@ func TestViewUser(t *testing.T) {
 
 	req := NewRequest(t, "GET", "/user2")
 	MakeRequest(t, req, http.StatusOK)
+
+	req = NewRequest(t, "GET", "/user2.keys")
+	resp := MakeRequest(t, req, http.StatusOK)
+	assert.Equal(t, `# Gitea isn't a key server. The keys are exported as the user uploaded and might not have been fully verified.
+ssh-rsa AAAAB3NzaC1yc2EAAAADAQABAAABgQDWVj0fQ5N8wNc0LVNA41wDLYJ89ZIbejrPfg/avyj3u/ZohAKsQclxG4Ju0VirduBFF9EOiuxoiFBRr3xRpqzpsZtnMPkWVWb+akZwBFAx8p+jKdy4QXR/SZqbVobrGwip2UjSrri1CtBxpJikojRIZfCnDaMOyd9Jp6KkujvniFzUWdLmCPxUE9zhTaPu0JsEP7MW0m6yx7ZUhHyfss+NtqmFTaDO+QlMR7L2QkDliN2Jl3Xa3PhuWnKJfWhdAq1Cw4oraKUOmIgXLkuiuxVQ6mD3AiFupkmfqdHq6h+uHHmyQqv3gU+/sD8GbGAhf6ftqhTsXjnv1Aj4R8NoDf9BS6KRkzkeun5UisSzgtfQzjOMEiJtmrep2ZQrMGahrXa+q4VKr0aKJfm+KlLfwm/JztfsBcqQWNcTURiCFqz+fgZw0Ey/de0eyMzldYTdXXNRYCKjs9bvBK+6SSXRM7AhftfQ0ZuoW5+gtinPrnmoOaSCEJbAiEiTO/BzOHgowiM=
+`, resp.Body.String())
 }
 
 func TestRenameUsername(t *testing.T) {
@@ -194,8 +200,17 @@ func TestRenameReservedUsername(t *testing.T) {
 
 func TestExportUserGPGKeys(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()
+	testExportUserGPGKeys := func(t *testing.T, user, expected string) {
+		session := loginUser(t, user)
+		t.Logf("Testing username %s export gpg keys", user)
+		req := NewRequest(t, "GET", "/"+user+".gpg")
+		resp := session.MakeRequest(t, req, http.StatusOK)
+		assert.Equal(t, expected, resp.Body.String())
+	}
+
 	// Export empty key list
 	testExportUserGPGKeys(t, "user1", `-----BEGIN PGP PUBLIC KEY BLOCK-----
+Comment: Gitea isn't a key server. The keys are exported as the user uploaded and might not have been fully verified.
 Note: This user hasn't uploaded any GPG keys.
 
 
@@ -237,6 +252,7 @@ GrE0MHOxUbc9tbtyk0F1SuzREUBH
 -----END PGP PUBLIC KEY BLOCK-----`)
 	// Export new key
 	testExportUserGPGKeys(t, "user1", `-----BEGIN PGP PUBLIC KEY BLOCK-----
+Comment: Gitea isn't a key server. The keys are exported as the user uploaded and might not have been fully verified.
 
 xsBNBFyy/VUBCADJ7zbM20Z1RWmFoVgp5WkQfI2rU1Vj9cQHes9i42wVLLtcbPeo
 QzubgzvMPITDy7nfWxgSf83E23DoHQ1ACFbQh/6eFSRrjsusp3YQ/08NSfPPbcu8
@@ -268,15 +284,6 @@ GrE0MHOxUbc9tbtyk0F1SuzREUBH
 -----END PGP PUBLIC KEY BLOCK-----`)
 }
 
-func testExportUserGPGKeys(t *testing.T, user, expected string) {
-	session := loginUser(t, user)
-	t.Logf("Testing username %s export gpg keys", user)
-	req := NewRequest(t, "GET", "/"+user+".gpg")
-	resp := session.MakeRequest(t, req, http.StatusOK)
-	// t.Log(resp.Body.String())
-	assert.Equal(t, expected, resp.Body.String())
-}
-
 func TestGetUserRss(t *testing.T) {
 	defer tests.PrepareTestEnv(t)()