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Add Diffusion policy capability "Can Edit and View Identities"
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Authored by aklapper on Oct 26 2023, 19:30.
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Details

Summary

Make it possible not to allow anyone to edit Diffusion identities.
Make it possible not to allow anyone to view other users' email addresses.

Closes T15443

Test Plan
  • As an admin, go to /applications/view/PhabricatorDiffusionApplication/ and see new policy "Can Edit and View Identities" set to "All Users" (as implicitly before)
  • As an admin, go to /applications/view/PhabricatorDiffusionApplication/ and change "Can Edit and View Identities" from "All Users" to "Administrators"
  • As a non-admin, go to /diffusion/identity/ and try to select the disabled "Create Identity" button; get an error message clicking it due to lack of permissions
  • Given there is at least one identity defined, as a non-admin, go directly to /diffusion/identity/view/1/ and get "You do not have permission to view this object."
  • Given there is at least one identity defined, as a non-admin, go directly to /diffusion/identity/edit/1/ and get "You do not have permission to view this object."
  • As a non-admin, go directly to /diffusion/identity/edit/form/default/ and get "You do not have permission to edit this object."
  • As a non-admin, go directly to /diffusion/identity/ and get "No Identities found." instead of seeing the existing identities listed.
  • As an admin, go to /diffusion/identity/ and still see the existing identities listed.
  • As an admin, go to /diffusion/identity/, select "Create Identity" to go to /diffusion/identity/edit/ and see the "Create Identity" page (though broken; see T15453)
  • As an admin, go to /diffusion/identity/view/1/ and still see the existing identity.
  • As an admin, go to /diffusion/identity/edit/1/ and successfully edit the existing identity.

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Note that this patch does NOT default to admin as proposed in T15443#9918 as I could imagine confusion by overwriting that value on existing installations. Happy to adjust though...

Maybe add some doc - the view and edit actions being lumped together are because it would be a larger change to split out that functionality right now, correct?

In general I’m not familiar with the upgrade/migration of policies and what needs considered. E.g this policy doesn’t exist today at all (or, the value for the application is hardcoded) and so a database migration wouldn’t be necessary. After this change lands the selected policy would exist in the database somewhere - if we do eventually split the view and edit policy into separate policies would that require a database migration?

In D25450#12945, @speck wrote:

Maybe add some doc - the view and edit actions being lumped together are because it would be a larger change to split out that functionality right now, correct?

Create, view, and edit are lumped together because I do not see a use case to split them. (In which situations do average users usually want to see/browse Diffusion identities?)

In general I’m not familiar with the upgrade/migration of policies and what needs considered. E.g this policy doesn’t exist today at all (or, the value for the application is hardcoded) and so a database migration wouldn’t be necessary.

That also my understanding; similar past changes like rP7ed35123a347a05c70c97eba2bec2b36eb2b3218 did not require database handling.

After this change lands the selected policy would exist in the database somewhere - if we do eventually split the view and edit policy into separate policies would that require a database migration?

I do not know either what a potential future split would imply. I'd like to see arguments why to split these policies further.

Great points. Thank you for talking through more details.

This revision is now accepted and ready to land.Nov 5 2023, 15:07

Impressing test plan :D Tested intensively. No nuclear implosions. Yuppie yeah! ✨

sgtm