|
- /* 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 <openssl/ssl.h>
-
- #include <assert.h>
- #include <string.h>
-
- #include <openssl/bn.h>
- #include <openssl/buf.h>
- #include <openssl/ec_key.h>
- #include <openssl/dh.h>
- #include <openssl/err.h>
- #include <openssl/mem.h>
- #include <openssl/sha.h>
- #include <openssl/x509.h>
- #include <openssl/x509v3.h>
-
- #include "../crypto/internal.h"
- #include "internal.h"
-
-
- int SSL_get_ex_data_X509_STORE_CTX_idx(void) {
- /* The ex_data index to go from |X509_STORE_CTX| to |SSL| always uses the
- * reserved app_data slot. Before ex_data was introduced, app_data was used.
- * Avoid breaking any software which assumes |X509_STORE_CTX_get_app_data|
- * works. */
- return 0;
- }
-
- CERT *ssl_cert_new(void) {
- CERT *ret = OPENSSL_malloc(sizeof(CERT));
- if (ret == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- memset(ret, 0, sizeof(CERT));
-
- return ret;
- }
-
- CERT *ssl_cert_dup(CERT *cert) {
- CERT *ret = OPENSSL_malloc(sizeof(CERT));
- if (ret == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
- memset(ret, 0, sizeof(CERT));
-
- if (cert->x509 != NULL) {
- X509_up_ref(cert->x509);
- ret->x509 = cert->x509;
- }
-
- if (cert->privatekey != NULL) {
- EVP_PKEY_up_ref(cert->privatekey);
- ret->privatekey = cert->privatekey;
- }
-
- if (cert->chain) {
- ret->chain = X509_chain_up_ref(cert->chain);
- if (!ret->chain) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- }
-
- ret->key_method = cert->key_method;
-
- ret->mask_k = cert->mask_k;
- ret->mask_a = cert->mask_a;
-
- if (cert->dh_tmp != NULL) {
- ret->dh_tmp = DHparams_dup(cert->dh_tmp);
- if (ret->dh_tmp == NULL) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_DH_LIB);
- goto err;
- }
- }
- ret->dh_tmp_cb = cert->dh_tmp_cb;
-
- if (cert->sigalgs != NULL) {
- ret->sigalgs =
- BUF_memdup(cert->sigalgs, cert->num_sigalgs * sizeof(cert->sigalgs[0]));
- if (ret->sigalgs == NULL) {
- goto err;
- }
- }
- ret->num_sigalgs = cert->num_sigalgs;
-
- ret->cert_cb = cert->cert_cb;
- ret->cert_cb_arg = cert->cert_cb_arg;
-
- if (cert->verify_store != NULL) {
- X509_STORE_up_ref(cert->verify_store);
- ret->verify_store = cert->verify_store;
- }
-
- return ret;
-
- err:
- ssl_cert_free(ret);
- return NULL;
- }
-
- /* Free up and clear all certificates and chains */
- void ssl_cert_clear_certs(CERT *cert) {
- if (cert == NULL) {
- return;
- }
-
- X509_free(cert->x509);
- cert->x509 = NULL;
- EVP_PKEY_free(cert->privatekey);
- cert->privatekey = NULL;
- sk_X509_pop_free(cert->chain, X509_free);
- cert->chain = NULL;
- cert->key_method = NULL;
- }
-
- void ssl_cert_free(CERT *c) {
- if (c == NULL) {
- return;
- }
-
- DH_free(c->dh_tmp);
-
- ssl_cert_clear_certs(c);
- OPENSSL_free(c->sigalgs);
- X509_STORE_free(c->verify_store);
-
- OPENSSL_free(c);
- }
-
- int ssl_cert_set0_chain(CERT *cert, STACK_OF(X509) *chain) {
- sk_X509_pop_free(cert->chain, X509_free);
- cert->chain = chain;
- return 1;
- }
-
- int ssl_cert_set1_chain(CERT *cert, STACK_OF(X509) *chain) {
- STACK_OF(X509) *dchain;
- if (chain == NULL) {
- return ssl_cert_set0_chain(cert, NULL);
- }
-
- dchain = X509_chain_up_ref(chain);
- if (dchain == NULL) {
- return 0;
- }
-
- if (!ssl_cert_set0_chain(cert, dchain)) {
- sk_X509_pop_free(dchain, X509_free);
- return 0;
- }
-
- return 1;
- }
-
- int ssl_cert_add0_chain_cert(CERT *cert, X509 *x509) {
- if (cert->chain == NULL) {
- cert->chain = sk_X509_new_null();
- }
- if (cert->chain == NULL || !sk_X509_push(cert->chain, x509)) {
- return 0;
- }
-
- return 1;
- }
-
- int ssl_cert_add1_chain_cert(CERT *cert, X509 *x509) {
- if (!ssl_cert_add0_chain_cert(cert, x509)) {
- return 0;
- }
-
- X509_up_ref(x509);
- return 1;
- }
-
- void ssl_cert_set_cert_cb(CERT *c, int (*cb)(SSL *ssl, void *arg), void *arg) {
- c->cert_cb = cb;
- c->cert_cb_arg = arg;
- }
-
- int ssl_verify_cert_chain(SSL *ssl, long *out_verify_result,
- STACK_OF(X509) *cert_chain) {
- if (cert_chain == NULL || sk_X509_num(cert_chain) == 0) {
- return 0;
- }
-
- X509_STORE *verify_store = ssl->ctx->cert_store;
- if (ssl->cert->verify_store != NULL) {
- verify_store = ssl->cert->verify_store;
- }
-
- X509 *leaf = sk_X509_value(cert_chain, 0);
- int ret = 0;
- X509_STORE_CTX ctx;
- if (!X509_STORE_CTX_init(&ctx, verify_store, leaf, cert_chain)) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
- return 0;
- }
- if (!X509_STORE_CTX_set_ex_data(&ctx, SSL_get_ex_data_X509_STORE_CTX_idx(),
- ssl)) {
- goto err;
- }
-
- /* 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, ssl->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), ssl->param);
-
- if (ssl->verify_callback) {
- X509_STORE_CTX_set_verify_cb(&ctx, ssl->verify_callback);
- }
-
- int verify_ret;
- if (ssl->ctx->app_verify_callback != NULL) {
- verify_ret = ssl->ctx->app_verify_callback(&ctx, ssl->ctx->app_verify_arg);
- } else {
- verify_ret = X509_verify_cert(&ctx);
- }
-
- *out_verify_result = ctx.error;
-
- /* If |SSL_VERIFY_NONE|, the error is non-fatal, but we keep the result. */
- if (verify_ret <= 0 && ssl->verify_mode != SSL_VERIFY_NONE) {
- ssl3_send_alert(ssl, SSL3_AL_FATAL, ssl_verify_alarm_type(ctx.error));
- OPENSSL_PUT_ERROR(SSL, SSL_R_CERTIFICATE_VERIFY_FAILED);
- goto err;
- }
-
- ERR_clear_error();
- ret = 1;
-
- err:
- X509_STORE_CTX_cleanup(&ctx);
- return ret;
- }
-
- static void set_client_CA_list(STACK_OF(X509_NAME) **ca_list,
- STACK_OF(X509_NAME) *name_list) {
- 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) *list) {
- STACK_OF(X509_NAME) *ret = sk_X509_NAME_new_null();
- if (ret == NULL) {
- return NULL;
- }
-
- for (size_t i = 0; i < sk_X509_NAME_num(list); i++) {
- X509_NAME *name = X509_NAME_dup(sk_X509_NAME_value(list, i));
- if (name == NULL || !sk_X509_NAME_push(ret, name)) {
- X509_NAME_free(name);
- sk_X509_NAME_pop_free(ret, X509_NAME_free);
- return NULL;
- }
- }
-
- return ret;
- }
-
- void SSL_set_client_CA_list(SSL *ssl, STACK_OF(X509_NAME) *name_list) {
- set_client_CA_list(&ssl->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 *ssl) {
- /* For historical reasons, this function is used both to query configuration
- * state on a server as well as handshake state on a client. However, whether
- * |ssl| is a client or server is not known until explicitly configured with
- * |SSL_set_connect_state|. If |handshake_func| is NULL, |ssl| is in an
- * indeterminate mode and |ssl->server| is unset. */
- if (ssl->handshake_func != NULL && !ssl->server) {
- return ssl->s3->tmp.ca_names;
- }
-
- if (ssl->client_CA != NULL) {
- return ssl->client_CA;
- }
- return ssl->ctx->client_CA;
- }
-
- static int add_client_CA(STACK_OF(X509_NAME) **sk, X509 *x509) {
- X509_NAME *name;
-
- if (x509 == NULL) {
- return 0;
- }
- if (*sk == NULL) {
- *sk = sk_X509_NAME_new_null();
- if (*sk == NULL) {
- return 0;
- }
- }
-
- name = X509_NAME_dup(X509_get_subject_name(x509));
- if (name == 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 *x509) {
- return add_client_CA(&ssl->client_CA, x509);
- }
-
- int SSL_CTX_add_client_CA(SSL_CTX *ctx, X509 *x509) {
- return add_client_CA(&ctx->client_CA, x509);
- }
-
- int ssl_has_certificate(const SSL *ssl) {
- return ssl->cert->x509 != NULL && ssl_has_private_key(ssl);
- }
-
- STACK_OF(X509) *ssl_parse_cert_chain(SSL *ssl, uint8_t *out_alert,
- uint8_t *out_leaf_sha256, CBS *cbs) {
- STACK_OF(X509) *ret = sk_X509_new_null();
- if (ret == NULL) {
- *out_alert = SSL_AD_INTERNAL_ERROR;
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- X509 *x = NULL;
- CBS certificate_list;
- if (!CBS_get_u24_length_prefixed(cbs, &certificate_list)) {
- *out_alert = SSL_AD_DECODE_ERROR;
- OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
- goto err;
- }
-
- while (CBS_len(&certificate_list) > 0) {
- CBS certificate;
- if (!CBS_get_u24_length_prefixed(&certificate_list, &certificate)) {
- *out_alert = SSL_AD_DECODE_ERROR;
- OPENSSL_PUT_ERROR(SSL, SSL_R_CERT_LENGTH_MISMATCH);
- goto err;
- }
-
- /* Retain the hash of the leaf certificate if requested. */
- if (sk_X509_num(ret) == 0 && out_leaf_sha256 != NULL) {
- SHA256(CBS_data(&certificate), CBS_len(&certificate), out_leaf_sha256);
- }
-
- /* A u24 length cannot overflow a long. */
- const uint8_t *data = CBS_data(&certificate);
- x = d2i_X509(NULL, &data, (long)CBS_len(&certificate));
- if (x == NULL || data != CBS_data(&certificate) + CBS_len(&certificate)) {
- *out_alert = SSL_AD_DECODE_ERROR;
- goto err;
- }
- if (!sk_X509_push(ret, x)) {
- *out_alert = SSL_AD_INTERNAL_ERROR;
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- x = NULL;
- }
-
- return ret;
-
- err:
- X509_free(x);
- sk_X509_pop_free(ret, X509_free);
- return NULL;
- }
-
- int ssl_add_cert_to_cbb(CBB *cbb, X509 *x509) {
- int len = i2d_X509(x509, NULL);
- if (len < 0) {
- return 0;
- }
- uint8_t *buf;
- if (!CBB_add_space(cbb, &buf, len)) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- return 0;
- }
- if (buf != NULL && i2d_X509(x509, &buf) < 0) {
- return 0;
- }
- return 1;
- }
-
- static int ssl_add_cert_with_length(CBB *cbb, X509 *x509) {
- CBB child;
- return CBB_add_u24_length_prefixed(cbb, &child) &&
- ssl_add_cert_to_cbb(&child, x509) &&
- CBB_flush(cbb);
- }
-
- int ssl_add_cert_chain(SSL *ssl, CBB *cbb) {
- if (!ssl_has_certificate(ssl)) {
- return CBB_add_u24(cbb, 0);
- }
-
- CERT *cert = ssl->cert;
- X509 *x = cert->x509;
-
- CBB child;
- if (!CBB_add_u24_length_prefixed(cbb, &child)) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_INTERNAL_ERROR);
- return 0;
- }
-
- int no_chain = 0;
- STACK_OF(X509) *chain = cert->chain;
- if ((ssl->mode & SSL_MODE_NO_AUTO_CHAIN) || chain != NULL) {
- no_chain = 1;
- }
-
- if (no_chain) {
- if (!ssl_add_cert_with_length(&child, x)) {
- return 0;
- }
-
- for (size_t i = 0; i < sk_X509_num(chain); i++) {
- x = sk_X509_value(chain, i);
- if (!ssl_add_cert_with_length(&child, x)) {
- return 0;
- }
- }
- } else {
- X509_STORE_CTX xs_ctx;
-
- if (!X509_STORE_CTX_init(&xs_ctx, ssl->ctx->cert_store, x, NULL)) {
- OPENSSL_PUT_ERROR(SSL, ERR_R_X509_LIB);
- return 0;
- }
- X509_verify_cert(&xs_ctx);
- /* Don't leave errors in the queue */
- ERR_clear_error();
-
- for (size_t i = 0; i < sk_X509_num(xs_ctx.chain); i++) {
- x = sk_X509_value(xs_ctx.chain, i);
- if (!ssl_add_cert_with_length(&child, x)) {
- X509_STORE_CTX_cleanup(&xs_ctx);
- return 0;
- }
- }
- X509_STORE_CTX_cleanup(&xs_ctx);
- }
-
- return CBB_flush(cbb);
- }
-
- static int ca_dn_cmp(const X509_NAME **a, const X509_NAME **b) {
- return X509_NAME_cmp(*a, *b);
- }
-
- STACK_OF(X509_NAME) *
- ssl_parse_client_CA_list(SSL *ssl, uint8_t *out_alert, CBS *cbs) {
- STACK_OF(X509_NAME) *ret = sk_X509_NAME_new(ca_dn_cmp);
- X509_NAME *name = NULL;
- if (ret == NULL) {
- *out_alert = SSL_AD_INTERNAL_ERROR;
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- return NULL;
- }
-
- CBS child;
- if (!CBS_get_u16_length_prefixed(cbs, &child)) {
- *out_alert = SSL_AD_DECODE_ERROR;
- OPENSSL_PUT_ERROR(SSL, SSL_R_LENGTH_MISMATCH);
- goto err;
- }
-
- while (CBS_len(&child) > 0) {
- CBS distinguished_name;
- if (!CBS_get_u16_length_prefixed(&child, &distinguished_name)) {
- *out_alert = SSL_AD_DECODE_ERROR;
- OPENSSL_PUT_ERROR(SSL, SSL_R_CA_DN_TOO_LONG);
- goto err;
- }
-
- const uint8_t *ptr = CBS_data(&distinguished_name);
- /* A u16 length cannot overflow a long. */
- name = d2i_X509_NAME(NULL, &ptr, (long)CBS_len(&distinguished_name));
- if (name == NULL ||
- ptr != CBS_data(&distinguished_name) + CBS_len(&distinguished_name)) {
- *out_alert = SSL_AD_DECODE_ERROR;
- OPENSSL_PUT_ERROR(SSL, SSL_R_DECODE_ERROR);
- goto err;
- }
-
- if (!sk_X509_NAME_push(ret, name)) {
- *out_alert = SSL_AD_INTERNAL_ERROR;
- OPENSSL_PUT_ERROR(SSL, ERR_R_MALLOC_FAILURE);
- goto err;
- }
- name = NULL;
- }
-
- return ret;
-
- err:
- X509_NAME_free(name);
- sk_X509_NAME_pop_free(ret, X509_NAME_free);
- return NULL;
- }
-
- int ssl_add_client_CA_list(SSL *ssl, CBB *cbb) {
- CBB child, name_cbb;
- if (!CBB_add_u16_length_prefixed(cbb, &child)) {
- return 0;
- }
-
- STACK_OF(X509_NAME) *sk = SSL_get_client_CA_list(ssl);
- if (sk == NULL) {
- return CBB_flush(cbb);
- }
-
- for (size_t i = 0; i < sk_X509_NAME_num(sk); i++) {
- X509_NAME *name = sk_X509_NAME_value(sk, i);
- int len = i2d_X509_NAME(name, NULL);
- if (len < 0) {
- return 0;
- }
- uint8_t *ptr;
- if (!CBB_add_u16_length_prefixed(&child, &name_cbb) ||
- !CBB_add_space(&name_cbb, &ptr, (size_t)len) ||
- (len > 0 && i2d_X509_NAME(name, &ptr) < 0)) {
- return 0;
- }
- }
-
- return CBB_flush(cbb);
- }
-
- int ssl_do_client_cert_cb(SSL *ssl, int *out_should_retry) {
- if (ssl_has_certificate(ssl) || ssl->ctx->client_cert_cb == NULL) {
- return 1;
- }
-
- X509 *x509 = NULL;
- EVP_PKEY *pkey = NULL;
- int ret = ssl->ctx->client_cert_cb(ssl, &x509, &pkey);
- if (ret < 0) {
- *out_should_retry = 1;
- return 0;
- }
-
- if (ret != 0) {
- if (!SSL_use_certificate(ssl, x509) ||
- !SSL_use_PrivateKey(ssl, pkey)) {
- ssl3_send_alert(ssl, SSL3_AL_FATAL, SSL_AD_INTERNAL_ERROR);
- *out_should_retry = 0;
- return 0;
- }
- }
-
- X509_free(x509);
- EVP_PKEY_free(pkey);
- return 1;
- }
-
- static int set_cert_store(X509_STORE **store_ptr, X509_STORE *new_store, int take_ref) {
- X509_STORE_free(*store_ptr);
- *store_ptr = new_store;
-
- if (new_store != NULL && take_ref) {
- X509_STORE_up_ref(new_store);
- }
-
- return 1;
- }
-
- int SSL_CTX_set0_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
- return set_cert_store(&ctx->cert->verify_store, store, 0);
- }
-
- int SSL_CTX_set1_verify_cert_store(SSL_CTX *ctx, X509_STORE *store) {
- return set_cert_store(&ctx->cert->verify_store, store, 1);
- }
-
- int SSL_set0_verify_cert_store(SSL *ssl, X509_STORE *store) {
- return set_cert_store(&ssl->cert->verify_store, store, 0);
- }
-
- int SSL_set1_verify_cert_store(SSL *ssl, X509_STORE *store) {
- return set_cert_store(&ssl->cert->verify_store, store, 1);
- }
-
- int SSL_CTX_set0_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
- return ssl_cert_set0_chain(ctx->cert, chain);
- }
-
- int SSL_CTX_set1_chain(SSL_CTX *ctx, STACK_OF(X509) *chain) {
- return ssl_cert_set1_chain(ctx->cert, chain);
- }
-
- int SSL_set0_chain(SSL *ssl, STACK_OF(X509) *chain) {
- return ssl_cert_set0_chain(ssl->cert, chain);
- }
-
- int SSL_set1_chain(SSL *ssl, STACK_OF(X509) *chain) {
- return ssl_cert_set1_chain(ssl->cert, chain);
- }
-
- int SSL_CTX_add0_chain_cert(SSL_CTX *ctx, X509 *x509) {
- return ssl_cert_add0_chain_cert(ctx->cert, x509);
- }
-
- int SSL_CTX_add1_chain_cert(SSL_CTX *ctx, X509 *x509) {
- return ssl_cert_add1_chain_cert(ctx->cert, x509);
- }
-
- int SSL_CTX_add_extra_chain_cert(SSL_CTX *ctx, X509 *x509) {
- return SSL_CTX_add0_chain_cert(ctx, x509);
- }
-
- int SSL_add0_chain_cert(SSL *ssl, X509 *x509) {
- return ssl_cert_add0_chain_cert(ssl->cert, x509);
- }
-
- int SSL_add1_chain_cert(SSL *ssl, X509 *x509) {
- return ssl_cert_add1_chain_cert(ssl->cert, x509);
- }
-
- int SSL_CTX_clear_chain_certs(SSL_CTX *ctx) {
- return SSL_CTX_set0_chain(ctx, NULL);
- }
-
- int SSL_CTX_clear_extra_chain_certs(SSL_CTX *ctx) {
- return SSL_CTX_clear_chain_certs(ctx);
- }
-
- int SSL_clear_chain_certs(SSL *ssl) {
- return SSL_set0_chain(ssl, NULL);
- }
-
- int SSL_CTX_get0_chain_certs(const SSL_CTX *ctx, STACK_OF(X509) **out_chain) {
- *out_chain = ctx->cert->chain;
- return 1;
- }
-
- int SSL_CTX_get_extra_chain_certs(const SSL_CTX *ctx,
- STACK_OF(X509) **out_chain) {
- return SSL_CTX_get0_chain_certs(ctx, out_chain);
- }
-
- int SSL_get0_chain_certs(const SSL *ssl, STACK_OF(X509) **out_chain) {
- *out_chain = ssl->cert->chain;
- return 1;
- }
-
- int ssl_check_leaf_certificate(SSL *ssl, X509 *leaf) {
- int ret = 0;
- EVP_PKEY *pkey = X509_get_pubkey(leaf);
- if (pkey == NULL) {
- goto err;
- }
-
- /* Check the certificate's type matches the cipher. */
- const SSL_CIPHER *cipher = ssl->s3->tmp.new_cipher;
- int expected_type = ssl_cipher_get_key_type(cipher);
- assert(expected_type != EVP_PKEY_NONE);
- if (pkey->type != expected_type) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_WRONG_CERTIFICATE_TYPE);
- goto err;
- }
-
- if (cipher->algorithm_auth & SSL_aECDSA) {
- /* TODO(davidben): This behavior is preserved from upstream. Should key
- * usages be checked in other cases as well? */
- /* This call populates the ex_flags field correctly */
- X509_check_purpose(leaf, -1, 0);
- if ((leaf->ex_flags & EXFLAG_KUSAGE) &&
- !(leaf->ex_kusage & X509v3_KU_DIGITAL_SIGNATURE)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_ECC_CERT_NOT_FOR_SIGNING);
- goto err;
- }
-
- if (!tls1_check_ec_cert(ssl, leaf)) {
- OPENSSL_PUT_ERROR(SSL, SSL_R_BAD_ECC_CERT);
- goto err;
- }
- }
-
- ret = 1;
-
- err:
- EVP_PKEY_free(pkey);
- return ret;
- }
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