- dtucker@cvs.openbsd.org 2008/01/23 01:56:54

     [clientloop.c packet.c serverloop.c]
     Revert the change for bz #1307 as it causes connection aborts if an IGNORE
     packet arrives while we're waiting in packet_read_expect (and possibly
     elsewhere).

4 files changed, 15 insertions, 19 deletions

diff --git a/ChangeLog b/ChangeLog
index dfda7a5d5..d6655ba1f 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -58,6 +58,11 @@
      [sftp-client.c]
      when a remote write error occurs during an upload, ensure that ACKs for
      all issued requests are properly drained. patch from t8m AT centrum.cz
+   - dtucker@cvs.openbsd.org 2008/01/23 01:56:54
+     [clientloop.c packet.c serverloop.c]
+     Revert the change for bz #1307 as it causes connection aborts if an IGNORE
+     packet arrives while we're waiting in packet_read_expect (and possibly
+     elsewhere).
 
 20080119
  - (djm) Silence noice from expr in ssh-copy-id; patch from
@@ -3586,4 +3591,4 @@
    OpenServer 6 and add osr5bigcrypt support so when someone migrates
    passwords between UnixWare and OpenServer they will still work. OK dtucker@
 
-$Id: ChangeLog,v 1.4831 2008/02/10 11:27:24 djm Exp $
+$Id: ChangeLog,v 1.4832 2008/02/10 11:27:47 djm Exp $
diff --git a/clientloop.c b/clientloop.c
index 195615063..d3fdc2bfc 100644
--- a/clientloop.c
+++ b/clientloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: clientloop.c,v 1.186 2008/01/19 20:48:53 djm Exp $ */
+/* $OpenBSD: clientloop.c,v 1.187 2008/01/23 01:56:54 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -465,12 +465,6 @@ client_check_window_change(void)
 }
 
 static void
-client_global_keepalive(int type, u_int32_t seq, void *ctxt)
-{
-        server_alive_timeouts = 0;
-}
-
-static void
 client_global_request_reply(int type, u_int32_t seq, void *ctxt)
 {
         server_alive_timeouts = 0;
@@ -2083,8 +2077,6 @@ client_init_dispatch_20(void)
         /* global request reply messages */
         dispatch_set(SSH2_MSG_REQUEST_FAILURE, &client_global_request_reply);
         dispatch_set(SSH2_MSG_REQUEST_SUCCESS, &client_global_request_reply);
-        dispatch_set(SSH2_MSG_IGNORE, &client_global_keepalive);
-        dispatch_set(SSH2_MSG_UNIMPLEMENTED, &client_global_keepalive);
 }
 static void
 client_init_dispatch_13(void)
diff --git a/packet.c b/packet.c
index 561fbf4c9..92997288d 100644
--- a/packet.c
+++ b/packet.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: packet.c,v 1.149 2007/12/28 15:32:24 dtucker Exp $ */
+/* $OpenBSD: packet.c,v 1.150 2008/01/23 01:56:54 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -968,10 +968,9 @@ packet_read_expect(int expected_type)
  * packet_process_incoming.  If so, reads the packet; otherwise returns
  * SSH_MSG_NONE.  This does not wait for data from the connection.
  *
- * SSH_MSG_DISCONNECT is handled specially here.  Also, SSH_MSG_IGNORE
- * messages are skipped by this function and are never returned
- * to higher levels, although SSH2_MSG_IGNORE are since they are needed
- * for keepalives.
+ * SSH_MSG_DISCONNECT is handled specially here.  Also,
+ * SSH_MSG_IGNORE messages are skipped by this function and are never returned
+ * to higher levels.
  */
 
 static int
@@ -1196,6 +1195,8 @@ packet_read_poll_seqnr(u_int32_t *seqnr_p)
                         if (type)
                                 DBG(debug("received packet type %d", type));
                         switch (type) {
+                        case SSH2_MSG_IGNORE:
+                                break;
                         case SSH2_MSG_DEBUG:
                                 packet_get_char();
                                 msg = packet_get_string(NULL);
@@ -1216,7 +1217,7 @@ packet_read_poll_seqnr(u_int32_t *seqnr_p)
                                 seqnr = packet_get_int();
                                 debug("Received SSH2_MSG_UNIMPLEMENTED for %u",
                                     seqnr);
-                                /* FALLTHROUGH */
+                                break;
                         default:
                                 return type;
                         }
diff --git a/serverloop.c b/serverloop.c
index 81888d0e5..124d86c6e 100644
--- a/serverloop.c
+++ b/serverloop.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: serverloop.c,v 1.146 2007/12/28 15:32:24 dtucker Exp $ */
+/* $OpenBSD: serverloop.c,v 1.147 2008/01/23 01:56:54 dtucker Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1193,8 +1193,6 @@ server_init_dispatch_20(void)
         dispatch_set(SSH2_MSG_CHANNEL_FAILURE, &server_input_keep_alive);
         dispatch_set(SSH2_MSG_REQUEST_SUCCESS, &server_input_keep_alive);
         dispatch_set(SSH2_MSG_REQUEST_FAILURE, &server_input_keep_alive);
-        dispatch_set(SSH2_MSG_IGNORE, &server_input_keep_alive);
-        dispatch_set(SSH2_MSG_UNIMPLEMENTED, &server_input_keep_alive);
         /* rekeying */
         dispatch_set(SSH2_MSG_KEXINIT, &kex_input_kexinit);
 }