Summary:
We save search information and then redirect to a "/search/<query_id>/" URI in
order to make search URIs short and bookmarkable, and save query data for
analysis/improvement of search results.
Currently, there's a vague object enumeration security issue with using
sequential IDs to identify searches, where non-admins can see searches other
users have performed. This isn't really too concerning but we lose nothing by
using random keys from a large ID space instead.
- Drop 'authorPHID', which was unused anyway, so searches can not be
personally identified, even by admins.
- Identify searches by random hash keys, not sequential IDs.
- Map old queries' keys to their IDs so we don't break any existing bookmarked
URIs.
Test Plan: Ran several searches, got redirected to URIs with random hashes from
a large ID space rather than sequential integers.
Reviewers: arice, btrahan
Reviewed By: arice
CC: aran, epriestley
Differential Revision: https://secure.phabricator.com/D1587
