[tbb-bugs] #22434 [Applications/Tor Browser]: drag and drop filter is ineffective in e10s mode

Tor Bug Tracker & Wiki blackhole at torproject.org
Tue Jul 25 15:26:54 UTC 2017

#22434: drag and drop filter is ineffective in e10s mode
 Reporter:  cypherpunks                          |          Owner:  tbb-
                                                 |  team
     Type:  defect                               |         Status:  closed
 Priority:  Medium                               |      Milestone:
Component:  Applications/Tor Browser             |        Version:
 Severity:  Normal                               |     Resolution:
 Keywords:  ff52-esr, tbb-e10s, tbb-7.0-issues,  |  worksforme
  tbb-regression                                 |  Actual Points:
Parent ID:                                       |         Points:
 Reviewer:                                       |        Sponsor:
Changes (by mcs):

 * status:  reopened => closed
 * resolution:   => worksforme


 It seems that this is not really a problem, even though the behavior is
 confusing when electrolysis is enabled.

 Testing by dragging from Tor Browser to another application shows that our
 filtering '''is''' effective in Tor Browser 7.x (Kathy and I tested by
 dragging from Tor Browser to Firefox). So there is not a potential proxy

 The confusing part is that when electrolysis is enabled, the drag filter
 does not affect the data that stays within the browser (e.g., if you drag
 between two Tor Browser windows). The content process must have its own
 copy of the transfer data which is not subject to filtering via the `on-
 datatransfer-available` mechanism. I think this is okay (although arguably
 it is an upsteam bug), so I am going to close this ticket again. Please
 reopen if you disagree.

Ticket URL: <https://trac.torproject.org/projects/tor/ticket/22434#comment:6>
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