[tor-bugs] #21787 [Applications/Tor Browser]: Make sure exposing the calendar information does not leak the locale

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#21787: Make sure exposing the calendar information does not leak the locale
-------------------------------------------------+-------------------------
 Reporter:  gk                                   |          Owner:  tbb-
                                                 |  team
     Type:  task                                 |         Status:
                                                 |  needs_review
 Priority:  High                                 |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff59-esr, tbb-fingerprinting,        |  Actual Points:
  tbb-7.0-must-alpha, TorBrowserTeam201705R      |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
-------------------------------------------------+-------------------------
Changes (by arthuredelstein):

 * keywords:  ff52-esr, tbb-fingerprinting, tbb-7.0-must-alpha =>
     ff59-esr, tbb-fingerprinting, tbb-7.0-must-alpha,
     TorBrowserTeam201705R
 * status:  new => needs_review


Comment:

 In ESR52, I confirmed in the code and by manual observation that this
 functionality is not exposed in content. The getCalendarInfo function can
 be used from chrome code like this:

 {{{
 const mozIntl = Components.classes["@mozilla.org/mozintl;1"]
                           .getService(Components.interfaces.mozIMozIntl);
 let x = {};
 mozIntl.addGetCalendarInfo(x);
 let calendarInfo = x.getCalendarInfo();
 }}}

 The only place in ESR52 where this is done is in a test:
 https://dxr.mozilla.org/mozilla-
 esr52/source/toolkit/components/mozintl/test/test_mozintl.js

 But this is not possible from a content script. So I think we should
 postpone this ticket to ff59-esr.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21787#comment:4>
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