#15599: Range requests used by pdfjs are not isolated to URL bar domain -------------------------------------------------+------------------------- Reporter: gk | Owner: | pospeselr Type: defect | Status: | needs_information Priority: High | Milestone: Component: Applications/Tor Browser | Version: Severity: Normal | Resolution: Keywords: tbb-linkability, | Actual Points: TorBrowserTeam201802R | Parent ID: | Points: Reviewer: | Sponsor: -------------------------------------------------+-------------------------
Comment (by pospeselr): Replying to [comment:17 mcs]: > I assume this is the code that is overriding the settings for `pdfjs.disableRange` when placed in `000-tor-browser.js`: > https://dxr.mozilla.org/mozilla- esr52/source/browser/extensions/pdfjs/content/PdfJs.jsm#79 Yep exactly, this code goes in and overwrites the preference unless it's been set by a user, so updating the default system preference does nothing in 000-tor-browser.js just gets blown away. > How bad is performance when loading a large PDF with this change in place? I assume "time to first page display" increases significantly. Entirely dependent on how large the pdf is that you're trying to download, and how fast your circuit is. Fortunately there is a progress bar in the pdf UI indicating the load progress, so it doesn't look like the browser is just hanging. -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/15599#comment:18> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online
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