fix(media): 对象存储 CDN - 统一资源预览与下载走 CDN
统一登录资源、公开画布分享和管理后台媒体的 CDN 预览与下载出口,并保留同源代理读取能力。
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@@ -214,24 +214,23 @@ func RegisterUserDataRoutes(r *gin.RouterGroup, svc *service.Service) {
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failService(c, err)
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return
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}
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resource, err := svc.Resource(user.ID, c.Param("id"))
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delivery, err := svc.PrepareResourceDelivery(user.ID, c.Param("id"), service.ResourceDeliveryOptions{
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ForceDirect: c.Query("direct") == "1",
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ForceProxy: c.Query("proxy") == "1",
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})
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if err != nil {
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fail(c, http.StatusNotFound, err)
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failService(c, err)
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return
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}
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if c.Query("direct") == "1" && resource.Provider != "local" {
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directURL, err := svc.DirectResourceURL(user.ID, resource.ID)
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if err != nil {
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failService(c, err)
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return
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}
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// 签名 URL 不进入应用、代理或浏览器缓存,也不作为后续请求的 Referer 泄露。
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if delivery.RedirectURL != "" {
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// CDN 或对象存储直连地址不进入应用缓存,也不作为后续请求的 Referer 泄露。
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c.Header("Cache-Control", "private, no-store")
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c.Header("Referrer-Policy", "no-referrer")
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c.Header("X-Content-Type-Options", "nosniff")
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c.Redirect(http.StatusTemporaryRedirect, directURL)
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c.Redirect(http.StatusTemporaryRedirect, delivery.RedirectURL)
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return
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}
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resource := delivery.Resource
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etag := resourceResponseETag(resource)
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// 私有资源允许浏览器保存响应,但每次复用前必须重新鉴权;304 会在读取 OSS 前返回。
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c.Header("Cache-Control", "private, no-cache")
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