Bug 18692 – Incorrect charset declaration is not honored

• Status: NEW
• Component: Page Loading

[xijia]

[Steps]
1 Launch Safari 3.1.1
2 Navigate to http://s.kuaiche.com/s/search?sid=1684&q=SnagIt%20V8.3.2%20Build%20014%20%E7%A0%B4%E8%A7%A3&stime=0.45721800%201208919835&srefer=http%3A%2F%2Fwww.tiansha.net%2Fdown%2Fsoft%2F708.htm&surl=a1804d9e8ffda43e721ecfa672f2a35c&r=99&s=0&t=0&f=0&p=0
3 Click the first download link in this page (The green down arrow)
4 Observe

[Result]
1 The popped up page displayed as garbage
2 Right click on this page, the context menu doesn't show up

[Expected]
1 The page should be decoded correctly and no garbage
2 The context menu should pop up

[Notes]
View source of the popped up page from FF, you can see actually this page has meta charset declared

[xijia]

(In reply to comment #0)
> [Steps]
> 1 Launch Safari 3.1.1
> 2 Navigate to
> http://s.kuaiche.com/s/search?sid=1684&q=SnagIt%20V8.3.2%20Build%20014%20%E7%A0%B4%E8%A7%A3&stime=0.45721800%201208919835&srefer=http%3A%2F%2Fwww.tiansha.net%2Fdown%2Fsoft%2F708.htm&surl=a1804d9e8ffda43e721ecfa672f2a35c&r=99&s=0&t=0&f=0&p=0
> 3 Click the first download link in this page (The green down arrow)
> 4 Observe
> 
> [Result]
> 1 The popped up page displayed as garbage
> 2 Right click on this page, the context menu doesn't show up
> 
> [Expected]
> 1 The page should be decoded correctly and no garbage
> 2 The context menu should pop up
> 
> [Notes]
> View source of the popped up page from FF, you can see actually this page has
> meta charset declared
> 

If you look the meta charset declaration, it is <meta http-equiv="Content-Type" content="text/html; charset="gb2312" />, you will find there is a extra double quotation mark before the literal gb2312.
So the method TextResourceDecoder::checkForHeadCharset (WebKit code) will treat the attribute declaration part of the meta tag as more than three parts because it ignore ">", opening tag ends symbol,  which is quoted.
part1 : http-equiv="Content-Type"
part2: content="text/html; charset="
part3: gb2312" />.......
So you see TextResourceDecoder::checkForHeadCharset can not find the end of meta tag, so it is failed to detect charset.

[xijia]

The context menu could not be popped up because the author of this web page disabled it.   See the following script snippet from the page
document.oncontextmenu=function(event){event.returnValue=false;};

So it works as intended for second problem, however, when right click on IE and FF, the context menu can pop up

I think the context menu behavior is correct, but the incorrect decoding of the text might be a bug.

[Alexey Proskuryakov]

See also: bug 17740.

[Alexey Proskuryakov]

*** Bug 25107 has been marked as a duplicate of this bug. ***