假想情境是結果檔案會被放在特定目錄下,要寫個簡易下載介面讓使用者可透過瀏覽器下載,因為是家用私人服務,就不花時間寫權限控管,開放匿名存取。我設計了三個 Action,/files 顯示特定目錄下的結果檔案清單,/download/hashId 可下載檔案,/delete/hashId 則是刪除檔案。Bottle 透過 @route("/action") 定義不同網址的回應行為,@route("/action/") 可從路由取參數。讀檔及刪檔時不使用檔名,而是採取雜湊碼比對,存取範圍嚴格限制在指定目錄內,可降低資安風險。取得檔案清單後轉成 Dictionary,以檔名雜湊碼為 Key,使用白名單方式限定只能下載項目,避免有人在路徑參數動手腳幹壞事。# bottle
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