[Webkit-unassigned] [Bug 48225] New: Language attribute validation

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=48225

           Summary: Language attribute validation
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: HTML DOM
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: leandrogracia at chromium.org


The contents of the language attribute are expected to follow the BCP47 specification (http://www.rfc-editor.org/rfc/bcp/bcp47.txt) however no validation at all is performed on it. This patch introduces a brief validation to filter the language attribute contents to [A-Za-z0-9-]* with the purpose of making it safe to use it, for example, as a parameter in URLs. Please note that this doesn't guarantee that the attribute contains a completely valid language tag according to BCP47 as this is not the purpose of this patch.

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