- djm@cvs.openbsd.org 2008/07/17 08:48:00

     [sshconnect2.c]
     strnvis preauth banner; pointed out by mpf@ ok markus@

1 files changed, 13 insertions, 5 deletions

diff --git a/sshconnect2.c b/sshconnect2.c
index 5bb772368..067fad545 100644
--- a/sshconnect2.c
+++ b/sshconnect2.c
@@ -1,4 +1,4 @@
-/* $OpenBSD: sshconnect2.c,v 1.165 2008/01/19 23:09:49 djm Exp $ */
+/* $OpenBSD: sshconnect2.c,v 1.166 2008/07/17 08:48:00 djm Exp $ */
 /*
  * Copyright (c) 2000 Markus Friedl.  All rights reserved.
  *
@@ -38,6 +38,7 @@
 #include <stdio.h>
 #include <string.h>
 #include <unistd.h>
+#include <vis.h>
 
 #include "openbsd-compat/sys-queue.h"
 
@@ -374,14 +375,21 @@ input_userauth_error(int type, u_int32_t seq, void *ctxt)
 void
 input_userauth_banner(int type, u_int32_t seq, void *ctxt)
 {
-        char *msg, *lang;
+        char *msg, *raw, *lang;
+        u_int len;
 
         debug3("input_userauth_banner");
-        msg = packet_get_string(NULL);
+        raw = packet_get_string(&len);
         lang = packet_get_string(NULL);
-        if (options.log_level >= SYSLOG_LEVEL_INFO)
+        if (options.log_level >= SYSLOG_LEVEL_INFO) {
+                if (len > 65536)
+                        len = 65536;
+                msg = xmalloc(len * 4); /* max expansion from strnvis() */
+                strnvis(msg, raw, len * 4, VIS_SAFE|VIS_OCTAL);
                 fprintf(stderr, "%s", msg);
-        xfree(msg);
+                xfree(msg);
+        }
+        xfree(raw);
         xfree(lang);
 }