[Mimedefang] maintaining state - per message custom variables

[Yizhar Hurwitz]

HI.


I would like to start using my custom variables in mimedefang-filter.


I have read "man mimedefang-filter => MAINTAINING STATE" section,

and I would like to ask your confirmation if I got it right.


I plan to use a custom array, that I will:

1. clear in "filter_begin".

2. Optionally write something to it in "filter".

3. Check in "filter_end" if it is not empty, and do something.


As far as I understand, this is OK because all those functions will run 
by the same process - is it right?


What I plan to do is my custom replacement to "action_replace_with_url", 
which will do something like that:


filter_begin:

=======

@detached_files = ();


 

sub filter:

======

if (......) {

 # copy the file to someplace...

push (@detached_files, 'link to the file');

}


filter:

====

if (@detached_files > 0) {

 # Use  append_text_boilerplate + append_html_boilerplate to add links 
to the detached files.

}


I need the links to files that I detach, to be visible *and clickable* 
in MS Outlook 2003 clients,

and I have tested both "action_replace_with_url" and 
"action_drop_with_warning" to find that they don't produce a clickable 
inline link,

so I'm trying to do it my own way.


Did I understand correctly the "maintaining state" section, and does my 
sample code look OK?


Thanks,

Yizhar Hurwitz

http://yizhar.mvps.org