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/* $OpenBSD: tls_keypair.c,v 1.8 2021/01/05 17:37:12 jsing Exp $ */
/*
* Copyright (c) 2014 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 <openssl/bio.h>
#include <openssl/err.h>
#include <openssl/pem.h>
#include <tls.h>
#include "tls_internal.h"
struct tls_keypair *
tls_keypair_new(void)
{
return calloc(1, sizeof(struct tls_keypair));
}
static int
tls_keypair_pubkey_hash(struct tls_keypair *keypair, struct tls_error *error)
{
X509 *cert = NULL;
int rv = -1;
free(keypair->pubkey_hash);
keypair->pubkey_hash = NULL;
if (keypair->cert_mem == NULL) {
rv = 0;
goto done;
}
if (tls_keypair_load_cert(keypair, error, &cert) == -1)
goto err;
if (tls_cert_pubkey_hash(cert, &keypair->pubkey_hash) == -1)
goto err;
rv = 0;
err:
X509_free(cert);
done:
return (rv);
}
void
tls_keypair_clear_key(struct tls_keypair *keypair)
{
freezero(keypair->key_mem, keypair->key_len);
keypair->key_mem = NULL;
keypair->key_len = 0;
}
int
tls_keypair_set_cert_file(struct tls_keypair *keypair, struct tls_error *error,
const char *cert_file)
{
if (tls_config_load_file(error, "certificate", cert_file,
&keypair->cert_mem, &keypair->cert_len) == -1)
return -1;
return tls_keypair_pubkey_hash(keypair, error);
}
int
tls_keypair_set_cert_mem(struct tls_keypair *keypair, struct tls_error *error,
const uint8_t *cert, size_t len)
{
if (tls_set_mem(&keypair->cert_mem, &keypair->cert_len, cert, len) == -1)
return -1;
return tls_keypair_pubkey_hash(keypair, error);
}
int
tls_keypair_set_key_file(struct tls_keypair *keypair, struct tls_error *error,
const char *key_file)
{
tls_keypair_clear_key(keypair);
return tls_config_load_file(error, "key", key_file,
&keypair->key_mem, &keypair->key_len);
}
int
tls_keypair_set_key_mem(struct tls_keypair *keypair, struct tls_error *error,
const uint8_t *key, size_t len)
{
tls_keypair_clear_key(keypair);
return tls_set_mem(&keypair->key_mem, &keypair->key_len, key, len);
}
int
tls_keypair_set_ocsp_staple_file(struct tls_keypair *keypair,
struct tls_error *error, const char *ocsp_file)
{
return tls_config_load_file(error, "ocsp", ocsp_file,
&keypair->ocsp_staple, &keypair->ocsp_staple_len);
}
int
tls_keypair_set_ocsp_staple_mem(struct tls_keypair *keypair,
struct tls_error *error, const uint8_t *staple, size_t len)
{
return tls_set_mem(&keypair->ocsp_staple, &keypair->ocsp_staple_len,
staple, len);
}
void
tls_keypair_free(struct tls_keypair *keypair)
{
if (keypair == NULL)
return;
tls_keypair_clear_key(keypair);
free(keypair->cert_mem);
free(keypair->ocsp_staple);
free(keypair->pubkey_hash);
free(keypair);
}
int
tls_keypair_load_cert(struct tls_keypair *keypair, struct tls_error *error,
X509 **cert)
{
char *errstr = "unknown";
BIO *cert_bio = NULL;
unsigned long ssl_err;
int rv = -1;
X509_free(*cert);
*cert = NULL;
if (keypair->cert_mem == NULL) {
tls_error_set(error, "keypair has no certificate");
goto err;
}
if ((cert_bio = BIO_new_mem_buf(keypair->cert_mem,
keypair->cert_len)) == NULL) {
tls_error_set(error, "failed to create certificate bio");
goto err;
}
if ((*cert = PEM_read_bio_X509(cert_bio, NULL, tls_password_cb,
NULL)) == NULL) {
if ((ssl_err = ERR_peek_error()) != 0)
errstr = ERR_error_string(ssl_err, NULL);
tls_error_set(error, "failed to load certificate: %s", errstr);
goto err;
}
rv = 0;
err:
BIO_free(cert_bio);
return (rv);
}
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