Hi Chris

> Any ideas? About EITHER issue?
> Ping. Any ideas?

Yeah, and hopefully you won't gag too much.  :-P

[SNIP]
> My application is using log4j2, but that library is only used by the 
> application
> and the JAR file is in WEB-INF/lib/. I wouldn't expect that it would interfere
> with server-level logging. [...] If anyone can help with logging, maybe I can
> figure out what's happening in the Filter.

Forget using the logging mechanism for now.  Many folks have trouble setting it 
up anyway.  Go "bone knives and bear skins" and just use System.out.println (or 
S.err.p).  You are running in the console, right?

> HTTP POST should not be prohibited unless I'm reading both the code and the 
> CSRF specs incorrectly.

Pretend that it does.  How would you solve that?

[SNIP]
> Application B has a feature where we present a web form to the user.
> It's fairly simple (paraphrasing):
>
> <form method="POST" action="/application_a/save_comment">
>    <textarea name="comment"></textarea>
> </form>

What happens if you cheat?  Can you use a redirect from B to A instead, or will 
that violate the filter rules?

> You'd think a Tomcat committer could figure out how to make logging work.

FWIW, by the time I respond to a plea for help, you know you're scraping the 
bottom of the barrel.  ;-)  My experience with CsrfPreventionFilter was limited 
to one small app with a simple setup a few years back.  Sorry I don't have 
anything better for you.

P.S.:  I still owe you a beer.

--
Cris Berneburg
CACI Senior Software Engineer
Tomcat Newbie


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