From: dave@bfnet.com
To: Russell Nelson <nelson@crynwr.com>
Subject: Re: PATCH: make qmail-popup recognize CAPA keyword
Date: 14 Dec 1998 12:07:12 -0800

Russell> Can I put a copy of this on www.qmail.org or do you have it
Russell> published somewhere already?

Not published anywhere but on the qmail list.  Please feel free to put
a copy on www.qmail.org.

Dave

----------------------------------------------------------------

There is a new extension to the pop3 protocol that the beta versions
of Eudora are wielding against my servers:  the "CAPA" keyword.

Basically, the client says "CAPA" and the server has to reply with
something like:

+OK Capability list follows
APOP
.

There can be other capabilities, I guess, but the only one I care
about is APOP.

Appended is a totally minimal patch to make qmail-popup reply with a
totally minimal capabilities list when hit with the "CAPA" keyword.

Dave

--- qmail-1.03/qmail-popup.c Mon Jun 15 03:53:16 1998
+++ new-qmail-1.03/qmail-popup.c     Thu Dec 10 16:52:59 1998
@@ -155,11 +155,19 @@
   *space++ = 0;
   doanddie(arg,space - arg,space);
 }
+void pop3_capa(arg) char *arg;
+{
+  puts("+OK Capability list follows\r\n");
+  puts("APOP\r\n");
+  puts(".\r\n");
+  flush();
+}
 
 struct commands pop3commands[] = {
   { "user", pop3_user, 0 }
 , { "pass", pop3_pass, 0 }
 , { "apop", pop3_apop, 0 }
+, { "capa", pop3_capa, 0 }
 , { "quit", pop3_quit, 0 }
 , { "noop", okay, 0 }
 , { 0, err_authoriz, 0 }