[pmwiki-users] How to add a read password field to the edit form

[Lars Grau]

We have pmwiki-2.2.0-beta65 running with LDAP authentication. We allow  
only authenticated users to edit pages. ( In config.php:  
$DefaultPasswords['edit'] = 'id:*'; )

Now we'd like to add a checkbox "This is a public page" to the edit  
form that does the following: If unchecked (default), the read  
password for the page being edited should be set to "id:*" allowing  
only authenticated users to VIEW the page. If the author activates the  
checkbox, the read password should be cleared.

Can anyone point us into a direction how to do this via a cookbook  
recipe or even better - provide the code? We're familiar with PHP in  
general, but we'd like to keep PmWiki as close to the original  
distribution for future updates and therefore need support in  
"hooking" this into the software.

Tricky sidenote: To be even more precise, if a read password has  
already been set by "?action=attr" (i.e. "secret"), we'd like the  
recipe to append the "id:*" rather than over-writing the entire  
attribute. Same applies for clearing the field. The "id:*" should be  
removed, but everything else should remain untouched.

Thanks a lot in advance.

Larsen.-