WebCore::URL::hostIsIPAddress needs a Windows implementation

[Ross Kirsling]

Currently on non-Cocoa, non-libsoup platforms, URL::hostIsIPAddress is just a stub:
https://github.com/WebKit/webkit/blob/767a0672697c45f01acb22e3fe00ff1f5c97871c/Source/WebCore/platform/URL.cpp#L1064-L1070

Not sure why it lacks a "FIXME", but this ought to be a default implementation, so that Windows ports can use it.

[Ross Kirsling]

Created attachment 345627 [details]
Patch

[Fujii Hironori]

Comment on attachment 345627 [details]
Patch

View in context: https://bugs.webkit.org/attachment.cgi?id=345627&action=review

> Source/WebCore/platform/URL.cpp:1082
> +            if (digit > '9' || digit < (i ? '1' : '0'))

This loop scans backward. If i == 0, it is the last number. You want to check the first number here. It should be "(i == length - 1 ? '1' : '0')"

> Source/WebCore/platform/URL.cpp:1085
> +            value += 10 * (digit - '0');

This is not correct. For example, a number '123' is given.
value = 0;
value += 10 * 3;
value += 10 * 2;
value += 10 * 1;
Then value becomes 60, not 123.

[Ross Kirsling]

Created attachment 345637 [details]
Patch

[Ross Kirsling]

Sorry, those really were some stupid mistakes on my part.
It seems that ultimately forward iteration is the most straightforward here. I've also added a few extra test cases for IPv4 accordingly.

[WebKit Commit Bot]

Comment on attachment 345637 [details]
Patch

Clearing flags on attachment: 345637

Committed r234147: <https://trac.webkit.org/changeset/234147>

[WebKit Commit Bot]

All reviewed patches have been landed.  Closing bug.

[Radar WebKit Bug Importer]

<rdar://problem/42541837>