[Webkit-unassigned] [Bug 46678] New: Tainting a canvas from a video element doesn't handle redirects

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=46678

           Summary: Tainting a canvas from a video element doesn't handle
                    redirects
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: enne at google.com
                CC: sam at webkit.org, oliver at apple.com, abarth at webkit.org,
                    mdelaney at apple.com
        Depends on: 45718


Bug 26771/r45311 added logic to check the origin of HTMLVideoElement::currentSrc() to see if the canvas should be tainted when the video was painted into it.  This bug fix handles the case when the video is provided by a <source> element instead of a src attribute, but doesn't correctly handle redirects, so it may give both false positives and false negatives.

This bug was filed due to conversation that came up in https://bugs.webkit.org/show_bug.cgi?id=45718.

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