New Message: Re: Cannot render because of #security

[webmaster at userland.com]

A new message was posted:

Address: http://frontier.userland.com/discuss/msgReader$11725

By: Eric Soroos (eric-ul at soroos.net)

#security is early enough in the process that Mainresponder hasn't set the page table yet. Its members are in scope, but you can't call html.getPageTableAddress().

If you're doing this in general, one defensive strategy is to try/else the call to getPageTableAddress.

local
 pta
try
 pta = html.getPageTableAddress()
else
 // pta is undefined, need to look somewhere else.
 if defined(client)
 pta = @parentOf(client)^

***Warning This is a hack.

What I've done in my security scripts is the following:

local {
 pta = @parentOf(client)^}

(Client being a member of the table that is guaranteed to exist. )

Everything that gets called by my #security that would ordinarily call getPageTableAddress has an optional pta parameter passed into it.

It could probably also be fixed by calling html.setPageTableAddress(@parentOf(client)^), but I haven't checked to see if that will cause other problems with mainresponder.

eric

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