[tor-bugs] #23439 [Applications/Tor Browser]: Exempt .onion domains from mixed content warnings

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#23439: Exempt .onion domains from mixed content warnings
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 Reporter:  gk                                   |          Owner:  gk
     Type:  defect                               |         Status:
                                                 |  needs_review
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  TorBrowserTeam201803R,               |  Actual Points:
  GeorgKoppen201803                              |
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
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Comment (by mcs):

 Replying to [comment:18 arthuredelstein]:
 > As a version of these patches have landed in Mozilla, shall we backport
 them to include in the next Tor Browser alpha?

 I thought of doing this a couple of weeks ago, but I got stuck because the
 automated test fails for a strange reason, at least in my non-rbm macOS
 build. What happens is that an SEC_ERROR_CERT_SIGNATURE_ALGORITHM_DISABLED
 error occurs while trying to load
 https://example.com/browser/browser/base/content/test/siteIdentity/test_no_mcb_for_onions.html

 Manually testing does show that the patch is correct. The main advantage
 over the patches from comment:15 is that pref caching is included. You can
 find the two commits here:
 https://gitweb.torproject.org/user/brade/tor-
 browser.git/log/?h=bug23439-01

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/23439#comment:21>
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