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upstream: better diagnosics on alg list assembly errors; ok 

deraadt@ markus@

OpenBSD-Commit-ID: 5a557e74b839daf13cc105924d2af06a1560faee
This commit is contained in:
djm@openbsd.org 2018-08-12 20:19:13 +00:00 committed by Damien Miller
parent e36a5f61b0
commit 1b9dd4aa15
2 changed files with 29 additions and 26 deletions
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27
readconf.c
View File

@ -1,4 +1,4 @@
/* $OpenBSD: readconf.c,v 1.296 2018/07/27 05:34:42 dtucker Exp $ */
/* $OpenBSD: readconf.c,v 1.297 2018/08/12 20:19:13 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -53,6 +53,7 @@
#include "xmalloc.h"
#include "ssh.h"
#include "ssherr.h"
#include "compat.h"
#include "cipher.h"
#include "pathnames.h"
@ -1924,6 +1925,7 @@ void
fill_default_options(Options * options)
{
char *all_cipher, *all_mac, *all_kex, *all_key;
int r;
if (options->forward_agent == -1)
options->forward_agent = 0;
@ -2075,17 +2077,18 @@ fill_default_options(Options * options)
all_mac = mac_alg_list(',');
all_kex = kex_alg_list(',');
all_key = sshkey_alg_list(0, 0, 1, ',');
if (kex_assemble_names(&options->ciphers,
KEX_CLIENT_ENCRYPT, all_cipher) != 0 ||
kex_assemble_names(&options->macs,
KEX_CLIENT_MAC, all_mac) != 0 ||
kex_assemble_names(&options->kex_algorithms,
KEX_CLIENT_KEX, all_kex) != 0 ||
kex_assemble_names(&options->hostbased_key_types,
KEX_DEFAULT_PK_ALG, all_key) != 0 ||
kex_assemble_names(&options->pubkey_key_types,
KEX_DEFAULT_PK_ALG, all_key) != 0)
fatal("%s: kex_assemble_names failed", __func__);
#define ASSEMBLE(what, defaults, all) \
do { \
if ((r = kex_assemble_names(&options->what, \
defaults, all)) != 0) \
fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
} while (0)
ASSEMBLE(ciphers, KEX_SERVER_ENCRYPT, all_cipher);
ASSEMBLE(macs, KEX_SERVER_MAC, all_mac);
ASSEMBLE(kex_algorithms, KEX_SERVER_KEX, all_kex);
ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, all_key);
ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, all_key);
#undef ASSEMBLE
free(all_cipher);
free(all_mac);
free(all_kex);

28
servconf.c
View File

@ -1,5 +1,5 @@
/* $OpenBSD: servconf.c,v 1.339 2018/07/11 18:53:29 markus Exp $ */
/* $OpenBSD: servconf.c,v 1.340 2018/08/12 20:19:13 djm Exp $ */
/*
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
* All rights reserved
@ -192,24 +192,24 @@ static void
assemble_algorithms(ServerOptions *o)
{
char *all_cipher, *all_mac, *all_kex, *all_key;
int r;
all_cipher = cipher_alg_list(',', 0);
all_mac = mac_alg_list(',');
all_kex = kex_alg_list(',');
all_key = sshkey_alg_list(0, 0, 1, ',');
if (kex_assemble_names(&o->ciphers,
KEX_SERVER_ENCRYPT, all_cipher) != 0 ||
kex_assemble_names(&o->macs,
KEX_SERVER_MAC, all_mac) != 0 ||
kex_assemble_names(&o->kex_algorithms,
KEX_SERVER_KEX, all_kex) != 0 ||
kex_assemble_names(&o->hostkeyalgorithms,
KEX_DEFAULT_PK_ALG, all_key) != 0 ||
kex_assemble_names(&o->hostbased_key_types,
KEX_DEFAULT_PK_ALG, all_key) != 0 ||
kex_assemble_names(&o->pubkey_key_types,
KEX_DEFAULT_PK_ALG, all_key) != 0)
fatal("kex_assemble_names failed");
#define ASSEMBLE(what, defaults, all) \
do { \
if ((r = kex_assemble_names(&o->what, defaults, all)) != 0) \
fatal("%s: %s: %s", __func__, #what, ssh_err(r)); \
} while (0)
ASSEMBLE(ciphers, KEX_SERVER_ENCRYPT, all_cipher);
ASSEMBLE(macs, KEX_SERVER_MAC, all_mac);
ASSEMBLE(kex_algorithms, KEX_SERVER_KEX, all_kex);
ASSEMBLE(hostkeyalgorithms, KEX_DEFAULT_PK_ALG, all_key);
ASSEMBLE(hostbased_key_types, KEX_DEFAULT_PK_ALG, all_key);
ASSEMBLE(pubkey_key_types, KEX_DEFAULT_PK_ALG, all_key);
#undef ASSEMBLE
free(all_cipher);
free(all_mac);
free(all_kex);