I want to create a website like a file manager. Where the user registers and receives a fixed disk space, say, 20 MB. Now the user can download pdf, doc, txt, jpeg, etc. To the limit of their drive. I can develop before that with PHP.
Now below is my problem:
1) If the user's files are damaged, they can roll back their folders up to 2-3 days. Files must be safe and virus free as users upload their important documents.
Is there a third-party storage server that provides such a facility?
2) Also, all files must be viewed in a browser. I am using google doc viewer. Is a good and safe way to preview a file in a browser? But google links are accessible from all, I need to add some restrictions, since the file can only be viewed by their owner.
I know this is an important task, but I need some kind of logic. Please share your thoughts.
Thanks.
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