[webkit-dev] Blob changes to SecurityOrigin.cpp
abarth at webkit.org
Fri Sep 3 14:50:14 PDT 2010
I was looking at SecurityOrigin.cpp today and I saw a bunch of code
relating to Blob URLs. I don't really understand why this code is
correct. Would someone be willing to explain it to me?
Some specific questions:
1) Why do blob URLs get exception from the unique origin check? How
does that interact with the HTML5 sandboxing model?
2) Why does SecurityOrigin::canLoad take a document as an argument?
What are the semantics of this parameter? In particular, why does a
SecurityOrigin::canLoad ignore |this| when called with a document
argument on a blob URL? That seems like a very bad idea.
In general, I'd prefer if folks checked with Sam or me before adding
loopholes in SecurityOrigin. Although the class might appear simple,
it's quite subtle.
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