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POS3 - Anonymous Upload - Key prefix
 

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    <p>I am trying to understand exactly how to setup a bucket that is generally private but allows anonymous uploads with restrictions. The specific criteria are:</p> <ul> <li>The bucket is mostly private and requires my key/secret to add/remove/update/list files.</li> <li>There is a "directory" (i.e. key prefix) called "incoming" that will allow anonymous users to upload content to but not list.</li> <li>The bucket has a one day expiration on all content. As a bonus I would like the "incoming" directory to have a 30 minute expiration although if that is not possible a one day expiration for the whole bucket will do.</li> <li>Files with the "incoming" prefix would be limited in size per object.</li> <li>I might want to also limit objects with the "incoming" prefix to only certain content types.</li> </ul> <p>Questions I have are:</p> <ol> <li>Would it be better to simply create two buckets. One for my incoming files and one for my own personal processing and storage?</li> <li>What would the code look like that for a file to be uploaded into the incoming directory. Ideally I would like to avoid a dependency on a S3 library and just use HTTP calls. Bonus points if you can show me the right direction on this in Ruby. :)</li> </ol> <p>The expiration seems settable via the S3 Management Console but is only limited to 1 day as the smallest expiration. Can I put a decimal in that field? Permissions seem to apply to an entire bucket instead of just a prefix. This is making me think I just need two buckets. If I keep with one bucket I think I need to create an IAM policy and apply that to the bucket but it is beyond my limited knowledge of S3 and I want to ensure I don't leave a hole in the permissions that allow people to do more than I want them to.</p> <p>I have found lots of documentation on doing anonymous uploads to S3 via a HTTP form post. I could adapt that into code but I am wondering since I am in application code (and not a HTTP form post) is there an easier way?</p>
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    1. COfor 2, have you considered configuring s3 with paperclip of carrierwave?
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    2. COThanks for the suggestion. Yes, I have used those before although I think they generally all operate on an authenticated basis (not anonymous). There might be some add-ons to do anonymous but I am really just hoping since S3 is a REST interface and I am allowing anonymous uploads that a simple HTTP request without any 3rd party library could do the trick. But trying to parse the Amazon documentation has been more of a chore than I hoped it would be so would love if someone could point me in the right direction.
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    3. CODidn't quite get it. By anonymous do you mean you want to be able to upload files without providing your s3 credentials? I don't think that's possible.
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