Hi,
Any way you want to unescape, something you escaped, I don't
know but what ever you put in the text field is got from the getter
public String getFieldName(){
//TODO: Decode/Unescape here
return this.fieldName;
}
Regards,
Jishnu Viswanath
Software Engineer
*(+9180)41190300 - 222(Ext) ll * ( + 91 ) 9731209330ll
Tavant Technologies Inc.,
www.tavant.com
PEOPLE :: PASSION :: EXCELLENCE
-----Original Message-----
From: egetchell [mailto:[EMAIL PROTECTED]
Sent: Wednesday, October 08, 2008 1:48 AM
To: [email protected]
Subject: Re: Using POSIX Regular Expressions for Internationalized
Validation
That's an interesting approach you guys are proposing.
I did a quick proof of concept where I coded an Interceptor that uses
the
Apache Commons StringEscapeUtils.escapeHtml function to update all
incoming
parameter values. This seems to implement what you guys suggested.
What is your approach for then displaying this data? For example, in my
proof of concept, when I escape Japanese Shift-JIS input, the escaped
values
are persisted to the database, and rendered to the browser in the
escaped
format. Do you unescape the prior to persisting it data (as it did pass
validation), or do you have special logic in the actions that will
unescape
all properties prior to the JSP page rendering the data?
Eric
Laurie Harper wrote:
>
> The validation strategy you cite is well and good when the you *have*
'a
> set of tightly constrained known good values.' It's not useful in the
> general case.
>
> Your concerns with respect to XSS should only present a problem if you
> need to render untrusted HTML (such as is often the case with web-base
> email applications, for example). Unless you need to preserve
> user-submitted HTML, though, the correct answer is, as Greg said, to
> HTML-escape all user supplied data (or at least, all user supplied
data
> you haven't previously sanitized via strategies such as you
referenced).
>
> If you do that, the browser will never see anything harmful in a
context
> it will treat as anything other than text (i.e. it will never try to
> interpret such data as markup) and therefore you wont be vulnerable.
>
> L.
>
>
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