Can't save page 0

[Pete]

I've been noticing this message come up recently at random - sometimes several at a time and sometimes spread out a lot.

I updated the wire directory and it still happens, however I was wondering if anyone could shed some light on what it actually means, or suggest a way to determine where the problem is?

2012-05-31 03:36:51 guest http://www.mysite.co.uk/?/ Error Exception: Can't save page 0: : Pages of type NullPage are not saveable (in /home/strategy/public_html/wire/core/Pages.php line 463)

It's almost certainly an issue with something I've coded, but for the life of me I can't think where to look and I can't reproduce it myself whether I'm logged in or not.

[Soma]

That's a IHNI error. (I Have No Idea)

Just guessing. You'r doing some ajax on the page? Comments saving for guests, Poll, ... ? I always wondered where the questionmark comes from "?".

[Pete]

I found it. Well, the troublesome script at least.

I changed this line in wire/core/ProcessWire.php:

$logMessage = "Page: $path\nUser: $userName\n\n" . str_replace("	", "\n", $message);

to this:

$logMessage = "Request: " . $_SERVER['REQUEST_URI'] . "\nPage: $path\nUser: $userName\n\n" . str_replace("	", "\n", $message);

@ ryan, looking again at the error code in that file, wouldn't it be better if this:

$path = ($config ? $config->httpHost : '') . ($page ? $page->url : '/?/');

was actually this:

$path = ($config ? $config->httpHost : '') . ($page ? $page->url : $_SERVER['REQUEST_URI']);

to potentially give a bit more info, or is there a reason why the fallback is set to /?/?

[ryan]

to potentially give a bit more info, or is there a reason why the fallback is set to /?/?

$_SERVER['REQUEST_URI'] isn't filtered, at least I don't think it is. Just trying to protect against any possible request injection into the logs.