From 86ef60fdfcdc29d80b4169b5d2218f801aec81dc Mon Sep 17 00:00:00 2001
From: jmarcus <jmarcus>
Date: Thu, 17 Jan 2002 16:13:34 +0000
Subject: [PATCH] Fixes from didier <dgautheron@magic.fr> to not use a freed
 pointer in when closing an afp_dsi session, and to not return 0 for as an
 OForkRefNum (per Apple spec).

---
 etc/afpd/afp_dsi.c |  6 +++---
 etc/afpd/ofork.c   | 26 ++++++++++++++++++++++++--
 2 files changed, 27 insertions(+), 5 deletions(-)

diff --git a/etc/afpd/afp_dsi.c b/etc/afpd/afp_dsi.c
index 37d92981..20807e97 100644
--- a/etc/afpd/afp_dsi.c
+++ b/etc/afpd/afp_dsi.c
@@ -1,5 +1,5 @@
 /*
- * $Id: afp_dsi.c,v 1.16 2002-01-04 04:45:47 sibaz Exp $
+ * $Id: afp_dsi.c,v 1.17 2002-01-17 16:13:34 jmarcus Exp $
  *
  * Copyright (c) 1999 Adrian Sun (asun@zoology.washington.edu)
  * Copyright (c) 1990,1993 Regents of The University of Michigan.
@@ -57,13 +57,13 @@ static __inline__ void afp_dsi_close(AFPObj *obj)
     if (obj->logout)
         (*obj->logout)();
 
-    dsi_close(dsi);
-
     /* UAM had syslog control; afpd needs to reassert itself */
     set_processname("afpd");
     syslog_setup(log_debug, logtype_default, logoption_ndelay | logoption_pid, logfacility_daemon);
     LOG(log_info, logtype_default, "%.2fKB read, %.2fKB written",
            dsi->read_count/1024.0, dsi->write_count/1024.0);
+
+    dsi_close(dsi);
 }
 
 /* a little bit of code duplication. */
diff --git a/etc/afpd/ofork.c b/etc/afpd/ofork.c
index 0e5a68c5..bd6d778a 100644
--- a/etc/afpd/ofork.c
+++ b/etc/afpd/ofork.c
@@ -1,5 +1,5 @@
 /*
- * $Id: ofork.c,v 1.8 2002-01-04 04:45:47 sibaz Exp $
+ * $Id: ofork.c,v 1.9 2002-01-17 16:13:34 jmarcus Exp $
  *
  * Copyright (c) 1996 Regents of The University of Michigan.
  * All Rights Reserved.  See COPYRIGHT.
@@ -152,11 +152,33 @@ struct adouble      *ad;
             return NULL;
     }
 
-    for ( refnum = lastrefnum++, i = 0; i < nforks; i++, refnum++ ) {
+    for ( refnum = ++lastrefnum, i = 0; i < nforks; i++, refnum++ ) {
+        /* cf AFP3.0.pdf, File fork page 40 */
+        if (!refnum)
+           refnum++;
         if ( oforks[ refnum % nforks ] == NULL ) {
             break;
         }
     }
+    /* grr, Apple and their 'uniquely identifies' 
+          the next line is a protection against 
+          of_alloc()
+             refnum % nforks = 3 
+             lastrefnum = 3
+             oforks[3] != NULL 
+             refnum = 4
+             oforks[4] == NULL
+             return 4
+         
+          close(oforks[4])
+      
+          of_alloc()
+             refnum % nforks = 4
+             ...
+             return 4
+         same if lastrefnum++ rather than ++lastrefnum. 
+    */
+    lastrefnum = refnum;
     if ( i == nforks ) {
         LOG(log_error, logtype_default, "of_alloc: maximum number of forks exceeded.");
         return( NULL );
-- 
2.39.2