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upstream: piece of UpdateHostkeys client strictification: when

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updating known_hosts with new keys, ignore NULL keys (forgot to include in
prior commit)

OpenBSD-Commit-ID: 49d2eda6379490e1ceec40c3b670b973f63dea08
This commit is contained in:
djm@openbsd.org 2022-01-06 22:02:52 +00:00 committed by Damien Miller
parent c2d9ced1da
commit 8832402bd5
1 changed files with 2 additions and 2 deletions
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4
hostfile.c
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@ -1,4 +1,4 @@
/* $OpenBSD: hostfile.c,v 1.92 2021/10/02 03:17:01 dtucker Exp $ */
/* $OpenBSD: hostfile.c,v 1.93 2022/01/06 22:02:52 djm Exp $ */
/*
* Author: Tatu Ylonen <ylo@cs.hut.fi>
* Copyright (c) 1995 Tatu Ylonen <ylo@cs.hut.fi>, Espoo, Finland
@ -642,7 +642,7 @@ hostfile_replace_entries(const char *filename, const char *host, const char *ip,
/* Re-add the requested keys */
want = HKF_MATCH_HOST | (ip == NULL ? 0 : HKF_MATCH_IP);
for (i = 0; i < nkeys; i++) {
if ((want & ctx.match_keys[i]) == want)
if (keys[i] == NULL || (want & ctx.match_keys[i]) == want)
continue;
if ((fp = sshkey_fingerprint(keys[i], hash_alg,
SSH_FP_DEFAULT)) == NULL) {