[toaster] question about chkuser-0.6.mysql.patch

[David M. Shirley]

Hello
I'm modifying a toaster (current version of toaster on all software) to 
use the mysql auth rather than cdb files.

I'm also trying to add the chkuser-0.6.mysql.patch but it fails at hunk 
4

From qmail-smtpd.c.rej I see:
***************
*** 413,418 ****
    }
    else
      if (!addrallowed()) { err_nogateway(); return; }
    if (!stralloc_cats(&rcptto,"T")) die_nomem();
    if (!stralloc_cats(&rcptto,addr.s)) die_nomem();
    if (!stralloc_0(&rcptto)) die_nomem();
--- 610,616 ----
    }
    else
      if (!addrallowed()) { err_nogateway(); return; }
+   if (!realrcpt_check()) { err_realrcpt(); return; }
    if (!stralloc_cats(&rcptto,"T")) die_nomem();
    if (!stralloc_cats(&rcptto,addr.s)) die_nomem();
    if (!stralloc_0(&rcptto)) die_nomem();
Now I'm not a programmer by any means but It appears to be trying to 
insert a single line:

 if (!realrcpt_check()) { err_realrcpt(); return; }
When I look in qmail-smtpd.c and look for the lines around where the 
insert is supposed to happen I see:

  }
  else {
    if (!addrallowed()) { err_nogateway(); return; }
    if (!envelope_scanner()) return;
  }
  if (!stralloc_cats(&rcptto,"T")) die_nomem();
  if (!stralloc_cats(&rcptto,addr.s)) die_nomem();
  if (!stralloc_0(&rcptto)) die_nomem();
Now I figure you could probably toss that extra line in there just 
about anywhere and still be able to compile the program but you might 
be calling realrcpt_check() at the wrong time and thus negate it's 
benefit.

Can anyone clear up exactly where that line is supposed to be inserted?
TIA!

David Shirley
http://www.webquarry.com