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refactor ssh_dispatch_run_fatal() to use sshpkt_fatal()
 to better report error conditions. Teach sshpkt_fatal() about ECONNRESET.

Improves error messages on TCP connection resets. bz#2257

ok dtucker@
This commit is contained in:
djm@openbsd.org 2015-05-01 07:10:01 +00:00 committed by Damien Miller
parent 9559d7de34
commit 639d6bc57b
2 changed files with 16 additions and 22 deletions
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22
dispatch.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: dispatch.c,v 1.26 2015/02/12 20:34:19 dtucker Exp $ */
/* $OpenBSD: dispatch.c,v 1.27 2015/05/01 07:10:01 djm Exp $ */
/*
* Copyright (c) 2000 Markus Friedl. All rights reserved.
*
@ -137,22 +137,6 @@ ssh_dispatch_run_fatal(struct ssh *ssh, int mode, volatile sig_atomic_t *done,
{
int r;
if ((r = ssh_dispatch_run(ssh, mode, done, ctxt)) != 0) {
switch (r) {
case SSH_ERR_CONN_CLOSED:
logit("Connection closed by %.200s",
ssh_remote_ipaddr(ssh));
cleanup_exit(255);
case SSH_ERR_CONN_TIMEOUT:
logit("Connection to %.200s timed out while "
"waiting to read", ssh_remote_ipaddr(ssh));
cleanup_exit(255);
case SSH_ERR_DISCONNECTED:
logit("Disconnected from %.200s",
ssh_remote_ipaddr(ssh));
cleanup_exit(255);
default:
fatal("%s: %s", __func__, ssh_err(r));
}
}
if ((r = ssh_dispatch_run(ssh, mode, done, ctxt)) != 0)
sshpkt_fatal(ssh, __func__, r);
}

16
packet.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: packet.c,v 1.211 2015/04/27 01:52:30 djm Exp $ */
/* $OpenBSD: packet.c,v 1.212 2015/05/01 07:10:01 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -1920,9 +1920,19 @@ sshpkt_fatal(struct ssh *ssh, const char *tag, int r)
logit("Connection closed by %.200s", ssh_remote_ipaddr(ssh));
cleanup_exit(255);
case SSH_ERR_CONN_TIMEOUT:
logit("Connection to %.200s timed out while "
"waiting to write", ssh_remote_ipaddr(ssh));
logit("Connection to %.200s timed out", ssh_remote_ipaddr(ssh));
cleanup_exit(255);
case SSH_ERR_DISCONNECTED:
logit("Disconnected from %.200s",
ssh_remote_ipaddr(ssh));
cleanup_exit(255);
case SSH_ERR_SYSTEM_ERROR:
if (errno == ECONNRESET) {
logit("Connection reset by %.200s",
ssh_remote_ipaddr(ssh));
cleanup_exit(255);
}
/* FALLTHROUGH */
default:
fatal("%s%sConnection to %.200s: %s",
tag != NULL ? tag : "", tag != NULL ? ": " : "",