From 0670c7396fc2435a51064f7bf456822baaaf910e Mon Sep 17 00:00:00 2001
From: Damien Miller <djm@mindrot.org>
Date: Wed, 21 Jul 2004 21:53:34 +1000
Subject: [PATCH]    - djm@cvs.openbsd.org 2004/07/21 11:51:29     
 [canohost.c]      bz#902: cache remote port so we don't fatal() in auth_log
 when remote      connection goes away quickly. from peak AT
 argo.troja.mff.cuni.cz;      ok markus@

---
 ChangeLog  |  7 ++++++-
 canohost.c | 10 ++++++++--
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/ChangeLog b/ChangeLog
index c5c561561..4b7097c4d 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -11,6 +11,11 @@
    - djm@cvs.openbsd.org 2004/07/21 10:36:23
      [gss-serv-krb5.c]
      fix function declaration
+   - djm@cvs.openbsd.org 2004/07/21 11:51:29
+     [canohost.c]
+     bz#902: cache remote port so we don't fatal() in auth_log when remote
+     connection goes away quickly. from peak AT argo.troja.mff.cuni.cz;
+     ok markus@
  - (djm) [auth-pam.c] Portable parts of bz#899: Don't display invalid 
    usernames in setproctitle from peak AT argo.troja.mff.cuni.cz;
 
@@ -1559,4 +1564,4 @@
    - (djm) Trim deprecated options from INSTALL. Mention UsePAM
    - (djm) Fix quote handling in sftp; Patch from admorten AT umich.edu
 
-$Id: ChangeLog,v 1.3487 2004/07/21 10:54:47 djm Exp $
+$Id: ChangeLog,v 1.3488 2004/07/21 11:53:34 djm Exp $
diff --git a/canohost.c b/canohost.c
index 057f061b6..8ad684d6c 100644
--- a/canohost.c
+++ b/canohost.c
@@ -12,7 +12,7 @@
  */
 
 #include "includes.h"
-RCSID("$OpenBSD: canohost.c,v 1.40 2004/06/21 17:36:31 avsm Exp $");
+RCSID("$OpenBSD: canohost.c,v 1.41 2004/07/21 11:51:29 djm Exp $");
 
 #include "packet.h"
 #include "xmalloc.h"
@@ -382,7 +382,13 @@ get_peer_port(int sock)
 int
 get_remote_port(void)
 {
-	return get_port(0);
+	static int port = -1;
+
+	/* Cache to avoid getpeername() on a dead connection */
+	if (port == -1)
+		port = get_port(0);
+
+	return port;
 }
 
 int