[tor-bugs] #33123 [Applications/GetTor]: Update GetTor's rate limiting

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#33123: Update GetTor's rate limiting
---------------------------------+--------------------------
 Reporter:  cohosh               |          Owner:  cohosh
     Type:  defect               |         Status:  assigned
 Priority:  Medium               |      Milestone:
Component:  Applications/GetTor  |        Version:
 Severity:  Normal               |     Resolution:
 Keywords:                       |  Actual Points:
Parent ID:                       |         Points:  2
 Reviewer:                       |        Sponsor:
---------------------------------+--------------------------
Changes (by cohosh):

 * owner:  (none) => cohosh
 * status:  new => assigned


Comment:

 Okay, it seems like this was originally intended to be an actual rate
 limit, where the function `get_num_requests` was supposed to pull from the
 database requests that were in progress from the same email address. The
 way it's implemented now, requests are not removed from the table when
 they are completed. Instead, the status is updated from `ONHOLD` to
 `SENT`.

 There's no reason to keep these entries around, especially since we have a
 separate table for statistics. I also don't feel good about keeping
 records of individual requests, even if the email addresses are hashed.
 Emails draw from a low entropy tool and subsequent requests from the same
 account are linkable.

 I '''think''' just deleting requests once they are handled will fix this.

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/33123#comment:1>
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