Wireshark · Wireshark-dev: Re: [Wireshark-dev] Tr : Dissector preferences reuse

[Jeff Morriss <jeff.morriss.ws@xxxxxxxxx>]

yvanmmailbox-web@xxxxxxxx wrote:

> I 'm working on 2 plugin dissectors, and I wish to know if it's possible 
> (and if yes, how) to reuse preferences from one plugin to another. I 
> need to reuse only a part of the preferences (which is an UAT table, so 
> pretty long and boring to define) from plugin1 to plugin2, considering 
> that protocol2 is included in plugin1 like this:
> plugin1
>     IP struct
>         UDP struct
>             plugin2
> Can the copy_prefs() function be useful? How must I define the 
> preferences in plugin1 to divide it in 2 parts? How to integrate a 
> separated part into preferences of plugin2?

Well, the plugins could simply share the variable that stores the 
preference.  Basically: make the variable not 'static' (so it is visible 
to other modules), put it in a header file (properly 'extern'd), and 
have both plugins include the header file and use the variable.

For an example, see the mtp3_standard preference in packet-mtp3.{h,c}.

Note: I know this works for regular dissectors but I don't know if the 
rules are different for plugins--especially on Windows.