[webkit-dev] CSS Parse error in <link rel> element.
achristensen at apple.com
Fri Feb 3 12:19:16 PST 2017
I would start looking at HTMLLinkElement::parseAttribute.
LinkHeader.cpp contains parsers for link headers, which are related. Yoav knows more about those. Those parsers ought to be united more.
> On Feb 3, 2017, at 1:17 AM, Atul Sowani <sowani at gmail.com> wrote:
> At present I am focusing on CSSParser::findURI() particularly and CSSParser::realLex() other related functionality in CSSParser.cpp - hope I am on right track. ;-)
> Please let me know if I should be looking at some other functionality as well to resolve this issue.
> On Fri, Feb 3, 2017 at 2:33 PM, Atul Sowani <sowani at gmail.com <mailto:sowani at gmail.com>> wrote:
> I came across an issue in qtwebkit CSS parser while working on a PhantomJS crash. The issue seems to be with parsing of <link rel="..." href="..."> type elements in an HTML page. What I observed is that the parser is trying to interpret the value for href given inside double-quotes. The value contains a "-" (e.g. "http://some.domain.com/some-page-etc-etc <http://some.domain.com/some-page-etc-etc>"). The "-" sign is being interpreted as minus and then things go wrong. In another case I found that "\g" embedded in the value (e.g. "http://some.domain.com/some-page/global/something <http://some.domain.com/some-page/global/something>") is also creating issues. In essence, the parser is trying to interpret the value, which I believe, it should not.
> I am willing to dive further into it to debug and fix the issue, but looking at the complexity and size of WebCore, I think I would benefit a lot to expedite a fix, if I could get some tips about which code area/functionality I should specifically focus in the WebCore. Looking forward to some help in this regard.
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