Re-request Authorization with libpurple?

[michaelcbrook at msn.com]

On Tue, 2009-08-11 at 17:32 -0700, Mark Doliner wrote:
> On Tue, Aug 11, 2009 at 4:00 PM,
> michaelcbrook at msn.com<michaelcbrook at msn.com> wrote:
> > Does anyone know how to imitate the "Re-request Authorization" button,
> > that's in pidgin, in libpurple?
> 
> I think you would need to call the blist_node_menu prpl callback
> function for the buddy, then find the action in the list with the name
> "Re-request Authorization" and call the callback function.  Yes, it's
> ugly
> 
> -Mark
> 
Ok, I think I'm really close, but I'm having some trouble calling the
callback function.  Here's what I have:

gboolean re_request_buddy(gpointer data)
{

printf("Re-requesting authorization...\n");

PurpleBuddy *buddy = data;

  if (buddy!=NULL)
  {

  PurplePluginProtocolInfo *prpl_info =
PURPLE_PLUGIN_PROTOCOL_INFO(purple_account_get_connection(purple_buddy_get_account(buddy))->prpl);

    if(prpl_info && prpl_info->blist_node_menu)
    {

    GList *menu = prpl_info->blist_node_menu((PurpleBlistNode *)buddy);

    int i = 0;

      while (i < g_list_length(menu))
      {

      PurpleMenuAction *menu_action = g_list_nth_data(menu, i);

        if (strcmp(menu_action->label, "Re-request Authorization")==0)
        {
        printf("Found re-request menu option...\n");
        menu_action->callback((PurpleBlistNode *)buddy);
        break;
        }

      i++;

      }

    }
    else
    {
    printf("ERROR 2\n");
    }

  }
  else
  {
  printf("ERROR 1\n");
  }

}

The compiler comes back saying:
master.c: In function ‘re_request_buddy’:
master.c:1129: error: too many arguments to function
‘menu_action->callback’

How should I be calling the callback function?

-Michael