Record git repo URL in manifest for archive uploads with forge auth.

Resolves: https://codeberg.org/git-pages/git-pages/issues/165

src/auth.go

@@ -119,6 +119,13 @@ type Authorization struct {
 	forgeUser *ForgeUser
 }
 
+func (auth *Authorization) ForgeRepoURL() string {
+	if auth.forgeUser != nil && len(auth.repoURLs) == 1 {
+		return auth.repoURLs[0]
+	}
+	return ""
+}
+
 func authorizeDNSChallenge(r *http.Request) (*Authorization, error) {
 	host, err := GetHost(r)
 	if err != nil {

src/main.go

@@ -437,7 +437,7 @@ func Main(versionInfo string) {
 			}
 
 			webRoot := webRootArg(*updateSite)
-			result = UpdateFromArchive(ctx, webRoot, contentType, file)
+			result = UpdateFromArchive(ctx, webRoot, "", contentType, file)
 		} else {
 			branch := "pages"
 			if sourceURL.Fragment != "" {

src/pages.go

@@ -523,19 +523,22 @@ func putPage(w http.ResponseWriter, r *http.Request) error {
 		result = UpdateFromRepository(ctx, webRoot, repoURL, branch)
 
 	default:
-		if auth, err := AuthorizeUpdateFromArchive(r); err != nil {
+		auth, err := AuthorizeUpdateFromArchive(r)
+		if err != nil {
 			return err
 		} else if auth.forgeUser != nil {
 			GetPrincipal(r.Context()).ForgeUser = auth.forgeUser
 		}
 
+		repoURL := auth.ForgeRepoURL()
+
 		if checkDryRun(w, r) {
 			return nil
 		}
 
 		// request body contains archive
 		reader := http.MaxBytesReader(w, r.Body, int64(config.Limits.MaxSiteSize.Bytes()))
-		result = UpdateFromArchive(ctx, webRoot, contentType, reader)
+		result = UpdateFromArchive(ctx, webRoot, repoURL, contentType, reader)
 	}
 
 	return reportUpdateResult(w, r, result)

src/update.go

@@ -128,6 +128,7 @@ var errArchiveFormat = errors.New("unsupported archive format")
 func UpdateFromArchive(
 	ctx context.Context,
 	webRoot string,
+	repoURL string,
 	contentType string,
 	reader io.Reader,
 ) (result UpdateResult) {
@@ -162,6 +163,10 @@ func UpdateFromArchive(
 		logc.Printf(ctx, "update %s err: %s", webRoot, err)
 		result = UpdateResult{UpdateError, nil, err}
 	} else {
+		if repoURL != "" {
+			newManifest.RepoUrl = &repoURL
+		}
+
 		result = Update(ctx, webRoot, oldManifest, newManifest, ModifyManifestOptions{})
 	}