===================================================================
RCS file: /cvsrepo/anoncvs/cvs/src/usr.bin/ssh/readconf.c,v
retrieving revision 1.217
retrieving revision 1.218
diff -u -r1.217 -r1.218
--- src/usr.bin/ssh/readconf.c	2014/02/22 01:32:19	1.217
+++ src/usr.bin/ssh/readconf.c	2014/02/23 20:11:36	1.218
@@ -1,4 +1,4 @@
-/* $OpenBSD: readconf.c,v 1.217 2014/02/22 01:32:19 djm Exp $ */
+/* $OpenBSD: readconf.c,v 1.218 2014/02/23 20:11:36 djm Exp $ */
 /*
  * Author: Tatu Ylonen <ylo@cs.hut.fi>
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@@ -1458,6 +1458,13 @@
 	return 1;
 }
 
+/* Returns 1 if a string option is unset or set to "none" or 0 otherwise. */
+int
+option_clear_or_none(const char *o)
+{
+	return o == NULL || strcasecmp(o, "none") == 0;
+}
+
 /*
  * Initializes options to special values that indicate that they have not yet
  * been set.  Read_config_file will only set options with this value. Options
@@ -1555,10 +1562,24 @@
 }
 
 /*
+ * A petite version of fill_default_options() that just fills the options
+ * needed for hostname canonicalization to proceed.
+ */
+void
+fill_default_options_for_canonicalization(Options *options)
+{
+	if (options->canonicalize_max_dots == -1)
+		options->canonicalize_max_dots = 1;
+	if (options->canonicalize_fallback_local == -1)
+		options->canonicalize_fallback_local = 1;
+	if (options->canonicalize_hostname == -1)
+		options->canonicalize_hostname = SSH_CANONICALISE_NO;
+}
+
+/*
  * Called after processing other sources of option data, this fills those
  * options for which no value has been specified with their default values.
  */
-
 void
 fill_default_options(Options * options)
 {
@@ -1711,7 +1732,7 @@
 		options->canonicalize_hostname = SSH_CANONICALISE_NO;
 #define CLEAR_ON_NONE(v) \
 	do { \
-		if (v != NULL && strcasecmp(v, "none") == 0) { \
+		if (option_clear_or_none(v)) { \
 			free(v); \
 			v = NULL; \
 		} \