[Webkit-unassigned] [Bug 128990] New: CSP breaks soft-wrapping of plaintext documents unless unsafe-inline is used

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=128990

           Summary: CSP breaks soft-wrapping of plaintext documents unless
                    unsafe-inline is used
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Macintosh Intel
        OS/Version: Mac OS X 10.9
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Layout and Rendering
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: aroben at webkit.org


To reproduce:

1. Serve a plaintext document containing long lines with Content-Security-Policy header of "style-src 'none'" or stronger (like "default-src 'none'").

The lines should soft-wrap to match the browser width.

But the lines do not wrap. In the JS console there is a warning that says:

> Refused to apply inline style because it violates the following Content Security Policy directive: "default-src 'none'". Note that 'style-src' was not explicitly set, so 'default-src' is used as a fallback.

It looks like CSP is breaking the style attribute that WebKit puts on the <pre> element that wraps the plaintext contents.

We were running into this when serving raw file contents from raw.github.com (I'm a GitHub engineer), so we added a "style-src 'unsafe-inline'" directive.

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