Hi, I'd like to save images from my app into a Dropbox using the Saver button. The problem is that the images are protected in AWS S3 based on HTTP referrer and/or User Agent. Therefore, when I add the Saver button I get a 403 from the Dropbox callback. Is there a http_referrer or User Agent that I can use to allow Dropbox from accessing my files in S3?
The Dropbox Saver uses the User-Agent: "DropboxSaver/1.0". Anyone else can also set that though of course, so you shouldn't use just that for access control if possible. (E.g., include unguessable tokens in the links, make the links expire, etc.)
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