1 files changed, 19 insertions, 11 deletions

diff --git a/servconf.c b/servconf.c
index f9be7f093..17cb094c7 100644
--- a/servconf.c
+++ b/servconf.c
@@ -1,5 +1,5 @@
 
-/* $OpenBSD: servconf.c,v 1.281 2015/08/21 23:52:30 djm Exp $ */
+/* $OpenBSD: servconf.c,v 1.282 2015/10/29 08:05:01 djm Exp $ */
 /*
  * Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
  *                    All rights reserved
@@ -178,6 +178,20 @@ option_clear_or_none(const char *o)
         return o == NULL || strcasecmp(o, "none") == 0;
 }
 
+static void
+assemble_algorithms(ServerOptions *o)
+{
+        if (kex_assemble_names(KEX_SERVER_ENCRYPT, &o->ciphers) != 0 ||
+            kex_assemble_names(KEX_SERVER_MAC, &o->macs) != 0 ||
+            kex_assemble_names(KEX_SERVER_KEX, &o->kex_algorithms) != 0 ||
+            kex_assemble_names(KEX_DEFAULT_PK_ALG,
+            &o->hostkeyalgorithms) != 0 ||
+            kex_assemble_names(KEX_DEFAULT_PK_ALG,
+            &o->hostbased_key_types) != 0 ||
+            kex_assemble_names(KEX_DEFAULT_PK_ALG, &o->pubkey_key_types) != 0)
+                fatal("kex_assemble_names failed");
+}
+
 void
 fill_default_server_options(ServerOptions *options)
 {
@@ -340,16 +354,7 @@ fill_default_server_options(ServerOptions *options)
         if (options->fingerprint_hash == -1)
                 options->fingerprint_hash = SSH_FP_HASH_DEFAULT;
 
-        if (kex_assemble_names(KEX_SERVER_ENCRYPT, &options->ciphers) != 0 ||
-            kex_assemble_names(KEX_SERVER_MAC, &options->macs) != 0 ||
-            kex_assemble_names(KEX_SERVER_KEX, &options->kex_algorithms) != 0 ||
-            kex_assemble_names(KEX_DEFAULT_PK_ALG,
-            &options->hostkeyalgorithms) != 0 ||
-            kex_assemble_names(KEX_DEFAULT_PK_ALG,
-            &options->hostbased_key_types) != 0 ||
-            kex_assemble_names(KEX_DEFAULT_PK_ALG,
-            &options->pubkey_key_types) != 0)
-                fatal("%s: kex_assemble_names failed", __func__);
+        assemble_algorithms(options);
 
         /* Turn privilege separation on by default */
         if (use_privsep == -1)
@@ -2019,6 +2024,9 @@ copy_set_server_options(ServerOptions *dst, ServerOptions *src, int preauth)
         /* See comment in servconf.h */
         COPY_MATCH_STRING_OPTS();
 
+        /* Arguments that accept '+...' need to be expanded */
+        assemble_algorithms(dst);
+
         /*
          * The only things that should be below this point are string options
          * which are only used after authentication.