oss请求处理

backend/internal/httpapi/assets.go

@@ -271,6 +271,20 @@ func (h *assetsHandler) download(w http.ResponseWriter, r *http.Request, public
 		}
 		return
 	}
+	inline := r.URL.Query().Get("inline") == "1"
+	if inline {
+		signedURL, signed, signErr := h.service.SignedDownloadURL(r.Context(), scope, id, assets.DefaultSignedURLTTL)
+		if signErr != nil {
+			writeAssetError(w, signErr, public, "")
+			return
+		}
+		if signed {
+			w.Header().Set("Cache-Control", "private, no-store")
+			w.Header().Set("Location", signedURL)
+			w.WriteHeader(http.StatusTemporaryRedirect)
+			return
+		}
+	}
 	blob, err := h.service.Download(r.Context(), scope, id)
 	if err != nil {
 		if public {
@@ -281,7 +295,11 @@ func (h *assetsHandler) download(w http.ResponseWriter, r *http.Request, public
 		return
 	}
 	defer blob.Body.Close()
-	writeBlob(w, blob, "private, no-store", contentDisposition(a.Name))
+	disposition := contentDisposition(a.Name)
+	if inline {
+		disposition = inlineContentDisposition(a.Name)
+	}
+	writeBlob(w, blob, "private, no-store", disposition)
 }
 
 func (h *assetsHandler) serveStored(w http.ResponseWriter, r *http.Request, key string) {
@@ -383,6 +401,12 @@ func writeBlob(w http.ResponseWriter, blob assets.Blob, cache, disposition strin
 	_, _ = io.Copy(w, blob.Body)
 }
 func contentDisposition(name string) string {
+	return namedContentDisposition("attachment", name)
+}
+func inlineContentDisposition(name string) string {
+	return namedContentDisposition("inline", name)
+}
+func namedContentDisposition(kind, name string) string {
 	clean := strings.TrimSpace(strings.NewReplacer("\r", "_", "\n", "_", "/", "_", "\\", "_").Replace(name))
 	if clean == "" {
 		clean = "download"
@@ -395,7 +419,7 @@ func contentDisposition(name string) string {
 			ascii.WriteByte('_')
 		}
 	}
-	return `attachment; filename="` + ascii.String() + `"; filename*=UTF-8''` + url.PathEscape(clean)
+	return kind + `; filename="` + ascii.String() + `"; filename*=UTF-8''` + url.PathEscape(clean)
 }
 func requestOrigin(r *http.Request) string {
 	scheme := "http"