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Re: [tor-bugs] #23768 [Applications/Tor Browser]: Update code to wipe indexedDB in New Identity (was: Wipe indexedDB in New Identity)

#23768: Update code to wipe indexedDB in New Identity
-----------------------------------------+--------------------------
 Reporter:  arthuredelstein              |          Owner:  tbb-team
     Type:  defect                       |         Status:  new
 Priority:  Medium                       |      Milestone:
Component:  Applications/Tor Browser     |        Version:
 Severity:  Normal                       |     Resolution:
 Keywords:  tbb-linkability, tbb-newnym  |  Actual Points:
Parent ID:                               |         Points:
 Reviewer:                               |        Sponsor:
-----------------------------------------+--------------------------

Comment (by arthuredelstein):

 I did [https://trac.torproject.org/projects/tor/ticket/23745#comment:8 an
 experiment] and found that Tor Browser already wipes indexedDB on New
 Identity.

 I think the relevant code is here:
 https://gitweb.torproject.org/torbutton.git/tree/src/chrome/content/torbutton.js?id=b3ff9863db338b2bd612f109e8bbce4c4af7cbd0#n1151
 {{{
   let orig_quota_test =
 m_tb_prefs.getBoolPref("dom.quotaManager.testing");
   try {
       // This works only by setting the pref to `true` otherwise we get an
       // exception and nothing is happening.
       m_tb_prefs.setBoolPref("dom.quotaManager.testing", true);
       Cc["@mozilla.org/dom/quota-manager-service;1"]
           .getService(Ci.nsIQuotaManagerService).clear();
   } catch(e) {
       torbutton_log(5, "Exception on storage clearing: "+e);
   } finally {
       m_tb_prefs.setBoolPref("dom.quotaManager.testing", orig_quota_test);
   }
 }}}

 Unfortunately, it's a little hacky because we are having to set the
 "dom.quotaManager.testing" pref. Maybe it would be better to adopt the
 code from https://hg.mozilla.org/mozilla-central/rev/0fbe00ad0203#l1.42.

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23768#comment:7>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online

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