9181929ebc
Summary:
Fixes T4589. This implements much better policy behavior for files that aligns with user expectations.
Currently, all files have permissive visibility.
The new behavior is:
- Files uploaded via drag-and-drop to the home page or file upload page get permissive visibility, for ease of quickly sharing things like screenshots.
- Files uploaded via the manual file upload control get permissive visibility by default, but the user can select the policy they want at upload time in an explicit/obvious way.
- Files uploaded via drag-and-drop anywhere else (e.g., comments or Pholio) get restricted visibility (only the uploader).
- When the user applies a transaction to the object which uses the file, we attach the file to the object and punch a hole through the policies: if you can see the object, you can see the file.
- This rule requires things to use ApplicationTransactions, which is why this took so long to fix.
- The "attach stuff to the object" code has been in place for a long time and works correctly.
I'll land D8498 after this lands, too.
Test Plan:
- Uploaded via global homepage upload and file drag-and-drop upload, saw permissive visibility.
- Uploaded via comment area, saw restricted visibility.
- After commenting, verified links were established and the file became visible to users who could see the attached object.
- Verified Pholio (which is a bit of a special case) correctly attaches images.
Reviewers: btrahan
Reviewed By: btrahan
Subscribers: epriestley
Maniphest Tasks: T4589
Differential Revision: https://secure.phabricator.com/D10131
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