Bug 172869 – Prevent scheme handlers from handling all built-in URL schemes

• Component: WebKit2
• Status: RESOLVED FIXED

[Brady Eidson]

Prevent scheme handlers from handling all built-in URL schemes

<rdar://problem/32404790>

[Brady Eidson]

Created attachment 311860 [details]
Patch

[Andy Estes]

Comment on attachment 311860 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=311860&action=review

> Source/WebCore/platform/SchemeRegistry.cpp:63
> +        // Other misc schemes that the SchemeRegistry doesn't know about.
> +        schemes.get().add("webkit-fake-url");
> +#if PLATFORM(MAC)
> +        schemes.get().add("safari-extension");
> +#endif

There's also x-apple-ql-id (QLPreviewProtocol()) and x-apple-content-filter (ContentFilter::urlScheme()).

[Andy Estes]

What happens if someone tries to register schemes used by system apps (tel:, mailto:, etc.)? Those were probably hijackable by NSURLProtocol, so maybe they should be hijackable here too. Just wondering if you'd thought about it.

[Brady Eidson]

(In reply to Andy Estes from comment #3)
> What happens if someone tries to register schemes used by system apps (tel:,
> mailto:, etc.)? Those were probably hijackable by NSURLProtocol, so maybe
> they should be hijackable here too. Just wondering if you'd thought about it.

We have thought about it, and they definitely get to be hijackable. They are not URLs WebKit handles internally.

[Brady Eidson]

Created attachment 311870 [details]
Patch

[Andy Estes]

Comment on attachment 311870 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=311870&action=review

> Source/WebCore/platform/SchemeRegistry.cpp:73
> +#if PLATFORM(IOS)
> +        schemes.get().add(QLPreviewProtocol());
> +#endif

This might break tvOS and watchOS builds. I'd use USE(QUICK_LOOK) instead.

[Brady Eidson]

Created attachment 311874 [details]
Patch

[WebKit Commit Bot]

Comment on attachment 311874 [details]
Patch

Clearing flags on attachment: 311874

Committed r217738: <http://trac.webkit.org/changeset/217738>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.