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openssl/ssl/ssl_cert.c
Kurt Roeckx 0b5f9ce37b Set reference count earlier 
Backport of 0e04674e96

Reviewed-by: Steve Henson <steve@openssl.org>

RT #4047, #4110, MR #1356
2015-11-24 21:53:40 +01:00

799 lines
23 KiB
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/*
* ! \file ssl/ssl_cert.c
*/
/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
* All rights reserved.
*
* This package is an SSL implementation written
* by Eric Young (eay@cryptsoft.com).
* The implementation was written so as to conform with Netscapes SSL.
*
* This library is free for commercial and non-commercial use as long as
* the following conditions are aheared to. The following conditions
* apply to all code found in this distribution, be it the RC4, RSA,
* lhash, DES, etc., code; not just the SSL code. The SSL documentation
* included with this distribution is covered by the same copyright terms
* except that the holder is Tim Hudson (tjh@cryptsoft.com).
*
* Copyright remains Eric Young's, and as such any Copyright notices in
* the code are not to be removed.
* If this package is used in a product, Eric Young should be given attribution
* as the author of the parts of the library used.
* This can be in the form of a textual message at program startup or
* in documentation (online or textual) provided with the package.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* "This product includes cryptographic software written by
* Eric Young (eay@cryptsoft.com)"
* The word 'cryptographic' can be left out if the rouines from the library
* being used are not cryptographic related :-).
* 4. If you include any Windows specific code (or a derivative thereof) from
* the apps directory (application code) you must include an acknowledgement:
* "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
*
* THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* The licence and distribution terms for any publically available version or
* derivative of this code cannot be changed. i.e. this code cannot simply be
* copied and put under another distribution licence
* [including the GNU Public Licence.]
*/
/* ====================================================================
* Copyright (c) 1998-2007 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* openssl-core@openssl.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.openssl.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
/* ====================================================================
* Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
* ECC cipher suite support in OpenSSL originally developed by
* SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
*/
#include <stdio.h>
#include "e_os.h"
#ifndef NO_SYS_TYPES_H
# include <sys/types.h>
#endif
#include "o_dir.h"
#include <openssl/objects.h>
#include <openssl/bio.h>
#include <openssl/pem.h>
#include <openssl/x509v3.h>
#ifndef OPENSSL_NO_DH
# include <openssl/dh.h>
#endif
#include <openssl/bn.h>
#include "ssl_locl.h"
int SSL_get_ex_data_X509_STORE_CTX_idx(void)
{
static volatile int ssl_x509_store_ctx_idx = -1;
int got_write_lock = 0;
CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX);
if (ssl_x509_store_ctx_idx < 0) {
CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX);
got_write_lock = 1;
if (ssl_x509_store_ctx_idx < 0) {
ssl_x509_store_ctx_idx =
X509_STORE_CTX_get_ex_new_index(0, "SSL for verify callback",
NULL, NULL, NULL);
}
}
if (got_write_lock)
CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX);
else
CRYPTO_r_unlock(CRYPTO_LOCK_SSL_CTX);
return ssl_x509_store_ctx_idx;
}
static void ssl_cert_set_default_md(CERT *cert)
{
/* Set digest values to defaults */
#ifndef OPENSSL_NO_DSA
cert->pkeys[SSL_PKEY_DSA_SIGN].digest = EVP_sha1();
#endif
#ifndef OPENSSL_NO_RSA
cert->pkeys[SSL_PKEY_RSA_SIGN].digest = EVP_sha1();
cert->pkeys[SSL_PKEY_RSA_ENC].digest = EVP_sha1();
#endif
#ifndef OPENSSL_NO_ECDSA
cert->pkeys[SSL_PKEY_ECC].digest = EVP_sha1();
#endif
}
CERT *ssl_cert_new(void)
{
CERT *ret;
ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
if (ret == NULL) {
SSLerr(SSL_F_SSL_CERT_NEW, ERR_R_MALLOC_FAILURE);
return (NULL);
}
memset(ret, 0, sizeof(CERT));
ret->key = &(ret->pkeys[SSL_PKEY_RSA_ENC]);
ret->references = 1;
ssl_cert_set_default_md(ret);
return (ret);
}
CERT *ssl_cert_dup(CERT *cert)
{
CERT *ret;
int i;
ret = (CERT *)OPENSSL_malloc(sizeof(CERT));
if (ret == NULL) {
SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE);
return (NULL);
}
memset(ret, 0, sizeof(CERT));
ret->references = 1;
ret->key = &ret->pkeys[cert->key - &cert->pkeys[0]];
/*
* or ret->key = ret->pkeys + (cert->key - cert->pkeys), if you find that
* more readable
*/
ret->valid = cert->valid;
ret->mask_k = cert->mask_k;
ret->mask_a = cert->mask_a;
ret->export_mask_k = cert->export_mask_k;
ret->export_mask_a = cert->export_mask_a;
#ifndef OPENSSL_NO_RSA
if (cert->rsa_tmp != NULL) {
RSA_up_ref(cert->rsa_tmp);
ret->rsa_tmp = cert->rsa_tmp;
}
ret->rsa_tmp_cb = cert->rsa_tmp_cb;
#endif
#ifndef OPENSSL_NO_DH
if (cert->dh_tmp != NULL) {
ret->dh_tmp = DHparams_dup(cert->dh_tmp);
if (ret->dh_tmp == NULL) {
SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_DH_LIB);
goto err;
}
if (cert->dh_tmp->priv_key) {
BIGNUM *b = BN_dup(cert->dh_tmp->priv_key);
if (!b) {
SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
goto err;
}
ret->dh_tmp->priv_key = b;
}
if (cert->dh_tmp->pub_key) {
BIGNUM *b = BN_dup(cert->dh_tmp->pub_key);
if (!b) {
SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_BN_LIB);
goto err;
}
ret->dh_tmp->pub_key = b;
}
}
ret->dh_tmp_cb = cert->dh_tmp_cb;
#endif
#ifndef OPENSSL_NO_ECDH
if (cert->ecdh_tmp) {
ret->ecdh_tmp = EC_KEY_dup(cert->ecdh_tmp);
if (ret->ecdh_tmp == NULL) {
SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_EC_LIB);
goto err;
}
}
ret->ecdh_tmp_cb = cert->ecdh_tmp_cb;
#endif
for (i = 0; i < SSL_PKEY_NUM; i++) {
if (cert->pkeys[i].x509 != NULL) {
ret->pkeys[i].x509 = cert->pkeys[i].x509;
CRYPTO_add(&ret->pkeys[i].x509->references, 1, CRYPTO_LOCK_X509);
}
if (cert->pkeys[i].privatekey != NULL) {
ret->pkeys[i].privatekey = cert->pkeys[i].privatekey;
CRYPTO_add(&ret->pkeys[i].privatekey->references, 1,
CRYPTO_LOCK_EVP_PKEY);
}
}
/*
* ret->extra_certs *should* exist, but currently the own certificate
* chain is held inside SSL_CTX
*/
/*
* Set digests to defaults. NB: we don't copy existing values as they
* will be set during handshake.
*/
ssl_cert_set_default_md(ret);
return (ret);
#if !defined(OPENSSL_NO_DH) || !defined(OPENSSL_NO_ECDH)
err:
#endif
#ifndef OPENSSL_NO_RSA
if (ret->rsa_tmp != NULL)
RSA_free(ret->rsa_tmp);
#endif
#ifndef OPENSSL_NO_DH
if (ret->dh_tmp != NULL)
DH_free(ret->dh_tmp);
#endif
#ifndef OPENSSL_NO_ECDH
if (ret->ecdh_tmp != NULL)
EC_KEY_free(ret->ecdh_tmp);
#endif
for (i = 0; i < SSL_PKEY_NUM; i++) {
if (ret->pkeys[i].x509 != NULL)
X509_free(ret->pkeys[i].x509);
if (ret->pkeys[i].privatekey != NULL)
EVP_PKEY_free(ret->pkeys[i].privatekey);
}
return NULL;
}
void ssl_cert_free(CERT *c)
{
int i;
if (c == NULL)
return;
i = CRYPTO_add(&c->references, -1, CRYPTO_LOCK_SSL_CERT);
#ifdef REF_PRINT
REF_PRINT("CERT", c);
#endif
if (i > 0)
return;
#ifdef REF_CHECK
if (i < 0) {
fprintf(stderr, "ssl_cert_free, bad reference count\n");
abort(); /* ok */
}
#endif
#ifndef OPENSSL_NO_RSA
if (c->rsa_tmp)
RSA_free(c->rsa_tmp);
#endif
#ifndef OPENSSL_NO_DH
if (c->dh_tmp)
DH_free(c->dh_tmp);
#endif
#ifndef OPENSSL_NO_ECDH
if (c->ecdh_tmp)
EC_KEY_free(c->ecdh_tmp);
#endif
for (i = 0; i < SSL_PKEY_NUM; i++) {
if (c->pkeys[i].x509 != NULL)
X509_free(c->pkeys[i].x509);
if (c->pkeys[i].privatekey != NULL)
EVP_PKEY_free(c->pkeys[i].privatekey);
#if 0
if (c->pkeys[i].publickey != NULL)
EVP_PKEY_free(c->pkeys[i].publickey);
#endif
}
OPENSSL_free(c);
}
int ssl_cert_inst(CERT **o)
{
/*
* Create a CERT if there isn't already one (which cannot really happen,
* as it is initially created in SSL_CTX_new; but the earlier code
* usually allows for that one being non-existant, so we follow that
* behaviour, as it might turn out that there actually is a reason for it
* -- but I'm not sure that *all* of the existing code could cope with
* s->cert being NULL, otherwise we could do without the initialization
* in SSL_CTX_new).
*/
if (o == NULL) {
SSLerr(SSL_F_SSL_CERT_INST, ERR_R_PASSED_NULL_PARAMETER);
return (0);
}
if (*o == NULL) {
if ((*o = ssl_cert_new()) == NULL) {
SSLerr(SSL_F_SSL_CERT_INST, ERR_R_MALLOC_FAILURE);
return (0);
}
}
return (1);
}
SESS_CERT *ssl_sess_cert_new(void)
{
SESS_CERT *ret;
ret = OPENSSL_malloc(sizeof *ret);
if (ret == NULL) {
SSLerr(SSL_F_SSL_SESS_CERT_NEW, ERR_R_MALLOC_FAILURE);
return NULL;
}
memset(ret, 0, sizeof *ret);
ret->peer_key = &(ret->peer_pkeys[SSL_PKEY_RSA_ENC]);
ret->references = 1;
return ret;
}
void ssl_sess_cert_free(SESS_CERT *sc)
{
int i;
if (sc == NULL)
return;
i = CRYPTO_add(&sc->references, -1, CRYPTO_LOCK_SSL_SESS_CERT);
#ifdef REF_PRINT
REF_PRINT("SESS_CERT", sc);
#endif
if (i > 0)
return;
#ifdef REF_CHECK
if (i < 0) {
fprintf(stderr, "ssl_sess_cert_free, bad reference count\n");
abort(); /* ok */
}
#endif
/* i == 0 */
if (sc->cert_chain != NULL)
sk_X509_pop_free(sc->cert_chain, X509_free);
for (i = 0; i < SSL_PKEY_NUM; i++) {
if (sc->peer_pkeys[i].x509 != NULL)
X509_free(sc->peer_pkeys[i].x509);
#if 0 /* We don't have the peer's private key.
* These lines are just * here as a reminder
* that we're still using a
* not-quite-appropriate * data structure. */
if (sc->peer_pkeys[i].privatekey != NULL)
EVP_PKEY_free(sc->peer_pkeys[i].privatekey);
#endif
}
#ifndef OPENSSL_NO_RSA
if (sc->peer_rsa_tmp != NULL)
RSA_free(sc->peer_rsa_tmp);
#endif
#ifndef OPENSSL_NO_DH
if (sc->peer_dh_tmp != NULL)
DH_free(sc->peer_dh_tmp);
#endif
#ifndef OPENSSL_NO_ECDH
if (sc->peer_ecdh_tmp != NULL)
EC_KEY_free(sc->peer_ecdh_tmp);
#endif
OPENSSL_free(sc);
}
int ssl_set_peer_cert_type(SESS_CERT *sc, int type)
{
sc->peer_cert_type = type;
return (1);
}
int ssl_verify_cert_chain(SSL *s, STACK_OF(X509) *sk)
{
X509 *x;
int i;
X509_STORE_CTX ctx;
if ((sk == NULL) || (sk_X509_num(sk) == 0))
return (0);
x = sk_X509_value(sk, 0);
if (!X509_STORE_CTX_init(&ctx, s->ctx->cert_store, x, sk)) {
SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB);
return (0);
}
#if 0
if (SSL_get_verify_depth(s) >= 0)
X509_STORE_CTX_set_depth(&ctx, SSL_get_verify_depth(s));
#endif
X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(), s);
/*
* We need to inherit the verify parameters. These can be determined by
* the context: if its a server it will verify SSL client certificates or
* vice versa.
*/
X509_STORE_CTX_set_default(&ctx, s->server ? "ssl_client" : "ssl_server");
/*
* Anything non-default in "param" should overwrite anything in the ctx.
*/
X509_VERIFY_PARAM_set1(X509_STORE_CTX_get0_param(&ctx), s->param);
if (s->verify_callback)
X509_STORE_CTX_set_verify_cb(&ctx, s->verify_callback);
if (s->ctx->app_verify_callback != NULL)
#if 1 /* new with OpenSSL 0.9.7 */
i = s->ctx->app_verify_callback(&ctx, s->ctx->app_verify_arg);
#else
i = s->ctx->app_verify_callback(&ctx); /* should pass app_verify_arg */
#endif
else {
#ifndef OPENSSL_NO_X509_VERIFY
i = X509_verify_cert(&ctx);
#else
i = 0;
ctx.error = X509_V_ERR_APPLICATION_VERIFICATION;
SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, SSL_R_NO_VERIFY_CALLBACK);
#endif
}
s->verify_result = ctx.error;
X509_STORE_CTX_cleanup(&ctx);
return (i);
}
static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,
STACK_OF(X509_NAME) *name_list)
{
if (*ca_list != NULL)
sk_X509_NAME_pop_free(*ca_list, X509_NAME_free);
*ca_list = name_list;
}
STACK_OF(X509_NAME) *SSL_dup_CA_list(STACK_OF(X509_NAME) *sk)
{
int i;
STACK_OF(X509_NAME) *ret;
X509_NAME *name;
ret = sk_X509_NAME_new_null();
for (i = 0; i < sk_X509_NAME_num(sk); i++) {
name = X509_NAME_dup(sk_X509_NAME_value(sk, i));
if ((name == NULL) || !sk_X509_NAME_push(ret, name)) {
sk_X509_NAME_pop_free(ret, X509_NAME_free);
return (NULL);
}
}
return (ret);
}
void SSL_set_client_CA_list(SSL *s, STACK_OF(X509_NAME) *name_list)
{
set_client_CA_list(&(s->client_CA), name_list);
}
void SSL_CTX_set_client_CA_list(SSL_CTX *ctx, STACK_OF(X509_NAME) *name_list)
{
set_client_CA_list(&(ctx->client_CA), name_list);
}
STACK_OF(X509_NAME) *SSL_CTX_get_client_CA_list(const SSL_CTX *ctx)
{
return (ctx->client_CA);
}
STACK_OF(X509_NAME) *SSL_get_client_CA_list(const SSL *s)
{
if (s->type == SSL_ST_CONNECT) { /* we are in the client */
if (((s->version >> 8) == SSL3_VERSION_MAJOR) && (s->s3 != NULL))
return (s->s3->tmp.ca_names);
else
return (NULL);
} else {
if (s->client_CA != NULL)
return (s->client_CA);
else
return (s->ctx->client_CA);
}
}
static int add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x)
{
X509_NAME *name;
if (x == NULL)
return (0);
if ((*sk == NULL) && ((*sk = sk_X509_NAME_new_null()) == NULL))
return (0);
if ((name = X509_NAME_dup(X509_get_subject_name(x))) == NULL)
return (0);
if (!sk_X509_NAME_push(*sk, name)) {
X509_NAME_free(name);
return (0);
}
return (1);
}
int SSL_add_client_CA(SSL *ssl, X509 *x)
{
return (add_client_CA(&(ssl->client_CA), x));
}
int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x)
{
return (add_client_CA(&(ctx->client_CA), x));
}
static int xname_cmp(const X509_NAME *const *a, const X509_NAME *const *b)
{
return (X509_NAME_cmp(*a, *b));
}
#ifndef OPENSSL_NO_STDIO
/**
* Load CA certs from a file into a ::STACK. Note that it is somewhat misnamed;
* it doesn't really have anything to do with clients (except that a common use
* for a stack of CAs is to send it to the client). Actually, it doesn't have
* much to do with CAs, either, since it will load any old cert.
* \param file the file containing one or more certs.
* \return a ::STACK containing the certs.
*/
STACK_OF(X509_NAME) *SSL_load_client_CA_file(const char *file)
{
BIO *in;
X509 *x = NULL;
X509_NAME *xn = NULL;
STACK_OF(X509_NAME) *ret = NULL, *sk;
sk = sk_X509_NAME_new(xname_cmp);
in = BIO_new(BIO_s_file_internal());
if ((sk == NULL) || (in == NULL)) {
SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
goto err;
}
if (!BIO_read_filename(in, file))
goto err;
for (;;) {
if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
break;
if (ret == NULL) {
ret = sk_X509_NAME_new_null();
if (ret == NULL) {
SSLerr(SSL_F_SSL_LOAD_CLIENT_CA_FILE, ERR_R_MALLOC_FAILURE);
goto err;
}
}
if ((xn = X509_get_subject_name(x)) == NULL)
goto err;
/* check for duplicates */
xn = X509_NAME_dup(xn);
if (xn == NULL)
goto err;
if (sk_X509_NAME_find(sk, xn) >= 0)
X509_NAME_free(xn);
else {
sk_X509_NAME_push(sk, xn);
sk_X509_NAME_push(ret, xn);
}
}
if (0) {
err:
if (ret != NULL)
sk_X509_NAME_pop_free(ret, X509_NAME_free);
ret = NULL;
}
if (sk != NULL)
sk_X509_NAME_free(sk);
if (in != NULL)
BIO_free(in);
if (x != NULL)
X509_free(x);
if (ret != NULL)
ERR_clear_error();
return (ret);
}
#endif
/**
* Add a file of certs to a stack.
* \param stack the stack to add to.
* \param file the file to add from. All certs in this file that are not
* already in the stack will be added.
* \return 1 for success, 0 for failure. Note that in the case of failure some
* certs may have been added to \c stack.
*/
int SSL_add_file_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
const char *file)
{
BIO *in;
X509 *x = NULL;
X509_NAME *xn = NULL;
int ret = 1;
int (*oldcmp) (const X509_NAME *const *a, const X509_NAME *const *b);
oldcmp = sk_X509_NAME_set_cmp_func(stack, xname_cmp);
in = BIO_new(BIO_s_file_internal());
if (in == NULL) {
SSLerr(SSL_F_SSL_ADD_FILE_CERT_SUBJECTS_TO_STACK,
ERR_R_MALLOC_FAILURE);
goto err;
}
if (!BIO_read_filename(in, file))
goto err;
for (;;) {
if (PEM_read_bio_X509(in, &x, NULL, NULL) == NULL)
break;
if ((xn = X509_get_subject_name(x)) == NULL)
goto err;
xn = X509_NAME_dup(xn);
if (xn == NULL)
goto err;
if (sk_X509_NAME_find(stack, xn) >= 0)
X509_NAME_free(xn);
else
sk_X509_NAME_push(stack, xn);
}
ERR_clear_error();
if (0) {
err:
ret = 0;
}
if (in != NULL)
BIO_free(in);
if (x != NULL)
X509_free(x);
(void)sk_X509_NAME_set_cmp_func(stack, oldcmp);
return ret;
}
/**
* Add a directory of certs to a stack.
* \param stack the stack to append to.
* \param dir the directory to append from. All files in this directory will be
* examined as potential certs. Any that are acceptable to
* SSL_add_dir_cert_subjects_to_stack() that are not already in the stack will be
* included.
* \return 1 for success, 0 for failure. Note that in the case of failure some
* certs may have been added to \c stack.
*/
int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack,
const char *dir)
{
OPENSSL_DIR_CTX *d = NULL;
const char *filename;
int ret = 0;
CRYPTO_w_lock(CRYPTO_LOCK_READDIR);
/* Note that a side effect is that the CAs will be sorted by name */
while ((filename = OPENSSL_DIR_read(&d, dir))) {
char buf[1024];
int r;
if (strlen(dir) + strlen(filename) + 2 > sizeof buf) {
SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK,
SSL_R_PATH_TOO_LONG);
goto err;
}
#ifdef OPENSSL_SYS_VMS
r = BIO_snprintf(buf, sizeof buf, "%s%s", dir, filename);
#else
r = BIO_snprintf(buf, sizeof buf, "%s/%s", dir, filename);
#endif
if (r <= 0 || r >= (int)sizeof(buf))
goto err;
if (!SSL_add_file_cert_subjects_to_stack(stack, buf))
goto err;
}
if (errno) {
SYSerr(SYS_F_OPENDIR, get_last_sys_error());
ERR_add_error_data(3, "OPENSSL_DIR_read(&ctx, '", dir, "')");
SSLerr(SSL_F_SSL_ADD_DIR_CERT_SUBJECTS_TO_STACK, ERR_R_SYS_LIB);
goto err;
}
ret = 1;
err:
if (d)
OPENSSL_DIR_end(&d);
CRYPTO_w_unlock(CRYPTO_LOCK_READDIR);
return ret;
}
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