Fix repo file list partial reloading for submodules (#35183)

Fix the TODO and add more tests

modules/git/commit_info.go

@@ -3,8 +3,6 @@
 
 package git
 
-import "path"
-
 // CommitInfo describes the first commit with the provided entry
 type CommitInfo struct {
 	Entry         *TreeEntry
@@ -12,15 +10,14 @@ type CommitInfo struct {
 	SubmoduleFile *CommitSubmoduleFile
 }
 
-func getCommitInfoSubmoduleFile(repoLink string, entry *TreeEntry, commit *Commit, treePathDir string) (*CommitSubmoduleFile, error) {
-	fullPath := path.Join(treePathDir, entry.Name())
+func GetCommitInfoSubmoduleFile(repoLink, fullPath string, commit *Commit, refCommitID ObjectID) (*CommitSubmoduleFile, error) {
 	submodule, err := commit.GetSubModule(fullPath)
 	if err != nil {
 		return nil, err
 	}
 	if submodule == nil {
 		// unable to find submodule from ".gitmodules" file
-		return NewCommitSubmoduleFile(repoLink, fullPath, "", entry.ID.String()), nil
+		return NewCommitSubmoduleFile(repoLink, fullPath, "", refCommitID.String()), nil
 	}
-	return NewCommitSubmoduleFile(repoLink, fullPath, submodule.URL, entry.ID.String()), nil
+	return NewCommitSubmoduleFile(repoLink, fullPath, submodule.URL, refCommitID.String()), nil
 }

modules/git/commit_info_gogit.go

@@ -73,7 +73,7 @@ func (tes Entries) GetCommitsInfo(ctx context.Context, repoLink string, commit *
 
 		// If the entry is a submodule, add a submodule file for this
 		if entry.IsSubModule() {
-			commitsInfo[i].SubmoduleFile, err = getCommitInfoSubmoduleFile(repoLink, entry, commit, treePath)
+			commitsInfo[i].SubmoduleFile, err = GetCommitInfoSubmoduleFile(repoLink, path.Join(treePath, entry.Name()), commit, entry.ID)
 			if err != nil {
 				return nil, nil, err
 			}

modules/git/commit_info_nogogit.go

@@ -64,7 +64,7 @@ func (tes Entries) GetCommitsInfo(ctx context.Context, repoLink string, commit *
 
 		// If the entry is a submodule, add a submodule file for this
 		if entry.IsSubModule() {
-			commitsInfo[i].SubmoduleFile, err = getCommitInfoSubmoduleFile(repoLink, entry, commit, treePath)
+			commitsInfo[i].SubmoduleFile, err = GetCommitInfoSubmoduleFile(repoLink, path.Join(treePath, entry.Name()), commit, entry.ID)
 			if err != nil {
 				return nil, nil, err
 			}

modules/git/commit_info_test.go

@@ -125,9 +125,9 @@ func TestEntries_GetCommitsInfo(t *testing.T) {
 	t.Run("NonExistingSubmoduleAsNil", func(t *testing.T) {
 		commit, err := bareRepo1.GetCommit("HEAD")
 		require.NoError(t, err)
-		tree, err := commit.GetTreeEntryByPath("file1.txt")
+		treeEntry, err := commit.GetTreeEntryByPath("file1.txt")
 		require.NoError(t, err)
-		cisf, err := getCommitInfoSubmoduleFile("/any/repo-link", tree, commit, "")
+		cisf, err := GetCommitInfoSubmoduleFile("/any/repo-link", "file1.txt", commit, treeEntry.ID)
 		require.NoError(t, err)
 		assert.Equal(t, &CommitSubmoduleFile{
 			repoLink: "/any/repo-link",

routers/web/repo/view_home.go

@@ -19,8 +19,8 @@ import (
 	unit_model "code.gitea.io/gitea/models/unit"
 	user_model "code.gitea.io/gitea/models/user"
 	"code.gitea.io/gitea/modules/git"
-	giturl "code.gitea.io/gitea/modules/git/url"
 	"code.gitea.io/gitea/modules/gitrepo"
+	"code.gitea.io/gitea/modules/htmlutil"
 	"code.gitea.io/gitea/modules/httplib"
 	"code.gitea.io/gitea/modules/log"
 	repo_module "code.gitea.io/gitea/modules/repository"
@@ -258,35 +258,41 @@ func handleRepoEmptyOrBroken(ctx *context.Context) {
 	ctx.Redirect(link)
 }
 
-func handleRepoViewSubmodule(ctx *context.Context, submodule *git.SubModule) {
-	// TODO: it needs to use git.NewCommitSubmoduleFile and SubmoduleWebLinkTree to correctly handle relative paths
-	submoduleRepoURL, err := giturl.ParseRepositoryURL(ctx, submodule.URL)
-	if err != nil {
-		HandleGitError(ctx, "handleRepoViewSubmodule: ParseRepositoryURL", err)
+func isViewHomeOnlyContent(ctx *context.Context) bool {
+	return ctx.FormBool("only_content")
+}
+
+func handleRepoViewSubmodule(ctx *context.Context, commitSubmoduleFile *git.CommitSubmoduleFile) {
+	submoduleWebLink := commitSubmoduleFile.SubmoduleWebLinkTree(ctx)
+	if submoduleWebLink == nil {
+		ctx.Data["NotFoundPrompt"] = ctx.Repo.TreePath
+		ctx.NotFound(nil)
 		return
 	}
-	submoduleURL := giturl.MakeRepositoryWebLink(submoduleRepoURL)
-	if httplib.IsCurrentGiteaSiteURL(ctx, submoduleURL) {
-		ctx.RedirectToCurrentSite(submoduleURL)
-	} else {
+
+	redirectLink := submoduleWebLink.CommitWebLink
+	if isViewHomeOnlyContent(ctx) {
+		ctx.Resp.Header().Set("Content-Type", "text/html; charset=utf-8")
+		_, _ = ctx.Resp.Write([]byte(htmlutil.HTMLFormat(`<a href="%s">%s</a>`, redirectLink, redirectLink)))
+	} else if !httplib.IsCurrentGiteaSiteURL(ctx, redirectLink) {
 		// don't auto-redirect to external URL, to avoid open redirect or phishing
-		ctx.Data["NotFoundPrompt"] = submoduleURL
+		ctx.Data["NotFoundPrompt"] = redirectLink
 		ctx.NotFound(nil)
+	} else {
+		ctx.Redirect(submoduleWebLink.CommitWebLink)
 	}
 }
 
 func prepareToRenderDirOrFile(entry *git.TreeEntry) func(ctx *context.Context) {
 	return func(ctx *context.Context) {
 		if entry.IsSubModule() {
-			submodule, err := ctx.Repo.Commit.GetSubModule(entry.Name())
+			commitSubmoduleFile, err := git.GetCommitInfoSubmoduleFile(ctx.Repo.RepoLink, ctx.Repo.TreePath, ctx.Repo.Commit, entry.ID)
 			if err != nil {
-				HandleGitError(ctx, "prepareToRenderDirOrFile: GetSubModule", err)
-				return
-			}
-			handleRepoViewSubmodule(ctx, submodule)
+				HandleGitError(ctx, "prepareToRenderDirOrFile: GetCommitInfoSubmoduleFile", err)
 				return
 			}
-		if entry.IsDir() {
+			handleRepoViewSubmodule(ctx, commitSubmoduleFile)
+		} else if entry.IsDir() {
 			prepareToRenderDirectory(ctx)
 		} else {
 			prepareFileView(ctx, entry)
@@ -441,7 +447,7 @@ func Home(ctx *context.Context) {
 		}
 	}
 
-	if ctx.FormBool("only_content") {
+	if isViewHomeOnlyContent(ctx) {
 		ctx.HTML(http.StatusOK, tplRepoViewContent)
 	} else if len(treeNames) != 0 {
 		ctx.HTML(http.StatusOK, tplRepoView)

routers/web/repo/view_home_test.go

@@ -9,7 +9,6 @@ import (
 
 	"code.gitea.io/gitea/models/unittest"
 	git_module "code.gitea.io/gitea/modules/git"
-	"code.gitea.io/gitea/modules/setting"
 	"code.gitea.io/gitea/services/contexttest"
 
 	"github.com/stretchr/testify/assert"
@@ -19,14 +18,20 @@ func TestViewHomeSubmoduleRedirect(t *testing.T) {
 	unittest.PrepareTestEnv(t)
 
 	ctx, _ := contexttest.MockContext(t, "/user2/repo1/src/branch/master/test-submodule")
-	submodule := &git_module.SubModule{Path: "test-submodule", URL: setting.AppURL + "user2/repo-other.git"}
+	submodule := git_module.NewCommitSubmoduleFile("/user2/repo1", "test-submodule", "../repo-other", "any-ref-id")
 	handleRepoViewSubmodule(ctx, submodule)
 	assert.Equal(t, http.StatusSeeOther, ctx.Resp.WrittenStatus())
-	assert.Equal(t, "/user2/repo-other", ctx.Resp.Header().Get("Location"))
+	assert.Equal(t, "/user2/repo-other/tree/any-ref-id", ctx.Resp.Header().Get("Location"))
 
 	ctx, _ = contexttest.MockContext(t, "/user2/repo1/src/branch/master/test-submodule")
-	submodule = &git_module.SubModule{Path: "test-submodule", URL: "https://other/user2/repo-other.git"}
+	submodule = git_module.NewCommitSubmoduleFile("/user2/repo1", "test-submodule", "https://other/user2/repo-other.git", "any-ref-id")
 	handleRepoViewSubmodule(ctx, submodule)
 	// do not auto-redirect for external URLs, to avoid open redirect or phishing
 	assert.Equal(t, http.StatusNotFound, ctx.Resp.WrittenStatus())
+
+	ctx, respWriter := contexttest.MockContext(t, "/user2/repo1/src/branch/master/test-submodule?only_content=true")
+	submodule = git_module.NewCommitSubmoduleFile("/user2/repo1", "test-submodule", "../repo-other", "any-ref-id")
+	handleRepoViewSubmodule(ctx, submodule)
+	assert.Equal(t, http.StatusOK, ctx.Resp.WrittenStatus())
+	assert.Equal(t, `<a href="/user2/repo-other/tree/any-ref-id">/user2/repo-other/tree/any-ref-id</a>`, respWriter.Body.String())
 }