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epriestley 95662ae8f1 Don't attempt to test capabilities on incomplete handles
Summary:
As backstory: I accidentally added the subscriber `PHID-USER-abcd` to `T1` on this install by calling `maniphest.edit`. I intended to edit `T1` on my local install.

This edit is permitted for messy technical reasons, described in T13429. It's not valid, but it's hard to prevent.

The state we reach is also possible even if the edit is rejected (i.e., someone can go manually update the database).

Regardless of how we get into this state, the state (a non-user subscriber) breaks the UI on the task page when it attempts to test if the subscriber can see the task.

To prevent this, only claim that a Handle can have capabilities if the handle is complete. If the handle is incomplete (an invalid or restricted object), it either can't be meaningfully tested for capabilities or the viewer isn't allowed to know them.

Test Plan:
Viewed `T1` on this install, saw a fatal. Applied the same edit to `T1` locally, got the same fatal. Applied patch, no more fatal. Now saw "Unknown Object (User)" in subscriber curtain.

Specifically, the fatal is:

> Attempting to test capability "view" for handle of type "USER", but this capability has not been attached.

Differential Revision: https://secure.phabricator.com/D21662
2021-04-07 14:56:26 -07:00
bin Remove the "ssh-auth-key" script 2019-10-28 17:52:37 -07:00
conf Remove an old digest in Celerity code and some obsolete configuration options 2019-01-04 13:43:38 -08:00
externals Update SES API to use AWSv4 signatures 2020-09-15 13:03:49 -07:00
resources Update client logic for inline comment "Save" and "Cancel" actions 2021-03-29 09:00:27 -07:00
scripts Forbid disabled devices from authenticating via SSH or HTTP 2021-03-16 15:51:51 -07:00
src Don't attempt to test capabilities on incomplete handles 2021-04-07 14:56:26 -07:00
support Remove or correct various "phabricator/" references to "libphutil" 2021-03-16 10:28:07 -07:00
webroot Update client logic for inline comment "Save" and "Cancel" actions 2021-03-29 09:00:27 -07:00
.arcconfig Set "history.immutable" to "false" explicitly in .arcconfig 2016-08-03 08:12:49 -07:00
.arclint Continue moving classes with no callers in libphutil or Arcanist to Phabricator 2020-02-12 13:14:04 -08:00
.arcunit Use the configuration driven unit test engine 2015-08-11 07:57:11 +10:00
.editorconfig Fix text lint issues 2015-02-12 07:00:13 +11:00
.gitignore Make i18n string extraction faster and more flexible 2016-07-04 10:23:30 -07:00
LICENSE Fix text lint issues 2015-02-12 07:00:13 +11:00
NOTICE Update Phabricator NOTICE file to reflect modern legal circumstances 2014-06-25 13:42:13 -07:00
README.md Remove push to IRC from "readme.md" too 2015-10-24 18:39:16 -07:00

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