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/* $OpenBSD: tls_lib.c,v 1.2 2022/08/20 21:48:25 tb Exp $ */
/*
* Copyright (c) 2019, 2021 Joel Sing <jsing@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include "ssl_locl.h"
int
tls_process_peer_certs(SSL *s, STACK_OF(X509) *peer_certs)
{
STACK_OF(X509) *peer_certs_no_leaf;
X509 *peer_cert = NULL;
EVP_PKEY *pkey;
int cert_type;
int ret = 0;
if (sk_X509_num(peer_certs) < 1)
goto err;
peer_cert = sk_X509_value(peer_certs, 0);
X509_up_ref(peer_cert);
if ((pkey = X509_get0_pubkey(peer_cert)) == NULL) {
SSLerror(s, SSL_R_NO_PUBLICKEY);
goto err;
}
if (EVP_PKEY_missing_parameters(pkey)) {
SSLerror(s, SSL_R_UNABLE_TO_FIND_PUBLIC_KEY_PARAMETERS);
goto err;
}
if ((cert_type = ssl_cert_type(pkey)) < 0) {
SSLerror(s, SSL_R_UNKNOWN_CERTIFICATE_TYPE);
goto err;
}
s->session->peer_cert_type = cert_type;
X509_free(s->session->peer_cert);
s->session->peer_cert = peer_cert;
peer_cert = NULL;
sk_X509_pop_free(s->s3->hs.peer_certs, X509_free);
if ((s->s3->hs.peer_certs = X509_chain_up_ref(peer_certs)) == NULL)
goto err;
if ((peer_certs_no_leaf = X509_chain_up_ref(peer_certs)) == NULL)
goto err;
X509_free(sk_X509_shift(peer_certs_no_leaf));
sk_X509_pop_free(s->s3->hs.peer_certs_no_leaf, X509_free);
s->s3->hs.peer_certs_no_leaf = peer_certs_no_leaf;
ret = 1;
err:
X509_free(peer_cert);
return ret;
}
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