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upstream: simplify sshkey_parse_private_fileblob_type() 

Try new format parser for all key types first, fall back to PEM
parser only for invalid format errors.

ok markus@

OpenBSD-Commit-ID: 0173bbb3a5cface77b0679d4dca0e15eb5600b77
This commit is contained in:
djm@openbsd.org 2020-04-08 00:07:19 +00:00 committed by Damien Miller
parent 421169d0e7
commit 8d514eea4a
1 changed files with 5 additions and 16 deletions
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21
sshkey.c
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@ -1,4 +1,4 @@
/* $OpenBSD: sshkey.c,v 1.105 2020/04/08 00:05:59 djm Exp $ */
/* $OpenBSD: sshkey.c,v 1.106 2020/04/08 00:07:19 djm Exp $ */
/*
* Copyright (c) 2000, 2001 Markus Friedl. All rights reserved.
* Copyright (c) 2008 Alexander von Gernler. All rights reserved.
@ -4366,7 +4366,6 @@ sshkey_parse_private2(struct sshbuf *blob, int type, const char *passphrase,
return r;
}
#ifdef WITH_OPENSSL
/* convert SSH v2 key to PEM or PKCS#8 format */
static int
@ -4692,24 +4691,16 @@ sshkey_parse_private_fileblob_type(struct sshbuf *blob, int type,
*commentp = NULL;
switch (type) {
#ifdef WITH_OPENSSL
case KEY_DSA:
case KEY_ECDSA:
case KEY_RSA:
return sshkey_parse_private_pem_fileblob(blob, type,
passphrase, keyp);
#endif /* WITH_OPENSSL */
case KEY_ED25519:
#ifdef WITH_XMSS
case KEY_XMSS:
#endif /* WITH_XMSS */
/* No fallback for new-format-only keys */
return sshkey_parse_private2(blob, type, passphrase,
keyp, commentp);
case KEY_UNSPEC:
default:
r = sshkey_parse_private2(blob, type, passphrase, keyp,
commentp);
/* Do not fallback to PEM parser if only passphrase is wrong. */
if (r == 0 || r == SSH_ERR_KEY_WRONG_PASSPHRASE)
/* Only fallback to PEM parser if a format error occurred. */
if (r != SSH_ERR_INVALID_FORMAT)
return r;
#ifdef WITH_OPENSSL
return sshkey_parse_private_pem_fileblob(blob, type,
@ -4717,8 +4708,6 @@ sshkey_parse_private_fileblob_type(struct sshbuf *blob, int type,
#else
return SSH_ERR_INVALID_FORMAT;
#endif /* WITH_OPENSSL */
default:
return SSH_ERR_KEY_TYPE_UNKNOWN;
}
}