diff options
Diffstat (limited to 'thirdparty/openssl/ssl/ssl_cert.c')
| -rw-r--r-- | thirdparty/openssl/ssl/ssl_cert.c | 1264 |
1 files changed, 1264 insertions, 0 deletions
diff --git a/thirdparty/openssl/ssl/ssl_cert.c b/thirdparty/openssl/ssl/ssl_cert.c new file mode 100644 index 0000000000..f48ebaecc0 --- /dev/null +++ b/thirdparty/openssl/ssl/ssl_cert.c @@ -0,0 +1,1264 @@ +/* + * ! \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; + + if (((size_t)&ssl_x509_store_ctx_idx & + (sizeof(ssl_x509_store_ctx_idx) - 1)) + == 0) { /* check alignment, practically always true */ + int ret; + + if ((ret = ssl_x509_store_ctx_idx) < 0) { + CRYPTO_w_lock(CRYPTO_LOCK_SSL_CTX); + if ((ret = ssl_x509_store_ctx_idx) < 0) { + ret = ssl_x509_store_ctx_idx = + X509_STORE_CTX_get_ex_new_index(0, + "SSL for verify callback", + NULL, NULL, NULL); + } + CRYPTO_w_unlock(CRYPTO_LOCK_SSL_CTX); + } + + return ret; + } else { /* commonly eliminated */ + + 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; + } +} + +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; + ret->ecdh_tmp_auto = cert->ecdh_tmp_auto; +#endif + + for (i = 0; i < SSL_PKEY_NUM; i++) { + CERT_PKEY *cpk = cert->pkeys + i; + CERT_PKEY *rpk = ret->pkeys + i; + if (cpk->x509 != NULL) { + rpk->x509 = cpk->x509; + CRYPTO_add(&rpk->x509->references, 1, CRYPTO_LOCK_X509); + } + + if (cpk->privatekey != NULL) { + rpk->privatekey = cpk->privatekey; + CRYPTO_add(&cpk->privatekey->references, 1, CRYPTO_LOCK_EVP_PKEY); + } + + if (cpk->chain) { + rpk->chain = X509_chain_up_ref(cpk->chain); + if (!rpk->chain) { + SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); + goto err; + } + } + rpk->valid_flags = 0; +#ifndef OPENSSL_NO_TLSEXT + if (cert->pkeys[i].serverinfo != NULL) { + /* Just copy everything. */ + ret->pkeys[i].serverinfo = + OPENSSL_malloc(cert->pkeys[i].serverinfo_length); + if (ret->pkeys[i].serverinfo == NULL) { + SSLerr(SSL_F_SSL_CERT_DUP, ERR_R_MALLOC_FAILURE); + return NULL; + } + ret->pkeys[i].serverinfo_length = + cert->pkeys[i].serverinfo_length; + memcpy(ret->pkeys[i].serverinfo, + cert->pkeys[i].serverinfo, + cert->pkeys[i].serverinfo_length); + } +#endif + } + + /* + * Set digests to defaults. NB: we don't copy existing values as they + * will be set during handshake. + */ + ssl_cert_set_default_md(ret); + /* Peer sigalgs set to NULL as we get these from handshake too */ + ret->peer_sigalgs = NULL; + ret->peer_sigalgslen = 0; + /* Configured sigalgs however we copy across */ + + if (cert->conf_sigalgs) { + ret->conf_sigalgs = OPENSSL_malloc(cert->conf_sigalgslen); + if (!ret->conf_sigalgs) + goto err; + memcpy(ret->conf_sigalgs, cert->conf_sigalgs, cert->conf_sigalgslen); + ret->conf_sigalgslen = cert->conf_sigalgslen; + } else + ret->conf_sigalgs = NULL; + + if (cert->client_sigalgs) { + ret->client_sigalgs = OPENSSL_malloc(cert->client_sigalgslen); + if (!ret->client_sigalgs) + goto err; + memcpy(ret->client_sigalgs, cert->client_sigalgs, + cert->client_sigalgslen); + ret->client_sigalgslen = cert->client_sigalgslen; + } else + ret->client_sigalgs = NULL; + /* Shared sigalgs also NULL */ + ret->shared_sigalgs = NULL; + /* Copy any custom client certificate types */ + if (cert->ctypes) { + ret->ctypes = OPENSSL_malloc(cert->ctype_num); + if (!ret->ctypes) + goto err; + memcpy(ret->ctypes, cert->ctypes, cert->ctype_num); + ret->ctype_num = cert->ctype_num; + } + + ret->cert_flags = cert->cert_flags; + + ret->cert_cb = cert->cert_cb; + ret->cert_cb_arg = cert->cert_cb_arg; + + if (cert->verify_store) { + CRYPTO_add(&cert->verify_store->references, 1, + CRYPTO_LOCK_X509_STORE); + ret->verify_store = cert->verify_store; + } + + if (cert->chain_store) { + CRYPTO_add(&cert->chain_store->references, 1, CRYPTO_LOCK_X509_STORE); + ret->chain_store = cert->chain_store; + } + + ret->ciphers_raw = NULL; + +#ifndef OPENSSL_NO_TLSEXT + if (!custom_exts_copy(&ret->cli_ext, &cert->cli_ext)) + goto err; + if (!custom_exts_copy(&ret->srv_ext, &cert->srv_ext)) + goto err; +#endif + + 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 + +#ifndef OPENSSL_NO_TLSEXT + custom_exts_free(&ret->cli_ext); + custom_exts_free(&ret->srv_ext); +#endif + + ssl_cert_clear_certs(ret); + + return NULL; +} + +/* Free up and clear all certificates and chains */ + +void ssl_cert_clear_certs(CERT *c) +{ + int i; + if (c == NULL) + return; + for (i = 0; i < SSL_PKEY_NUM; i++) { + CERT_PKEY *cpk = c->pkeys + i; + if (cpk->x509) { + X509_free(cpk->x509); + cpk->x509 = NULL; + } + if (cpk->privatekey) { + EVP_PKEY_free(cpk->privatekey); + cpk->privatekey = NULL; + } + if (cpk->chain) { + sk_X509_pop_free(cpk->chain, X509_free); + cpk->chain = NULL; + } +#ifndef OPENSSL_NO_TLSEXT + if (cpk->serverinfo) { + OPENSSL_free(cpk->serverinfo); + cpk->serverinfo = NULL; + cpk->serverinfo_length = 0; + } +#endif + /* Clear all flags apart from explicit sign */ + cpk->valid_flags &= CERT_PKEY_EXPLICIT_SIGN; + } +} + +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 + + ssl_cert_clear_certs(c); + if (c->peer_sigalgs) + OPENSSL_free(c->peer_sigalgs); + if (c->conf_sigalgs) + OPENSSL_free(c->conf_sigalgs); + if (c->client_sigalgs) + OPENSSL_free(c->client_sigalgs); + if (c->shared_sigalgs) + OPENSSL_free(c->shared_sigalgs); + if (c->ctypes) + OPENSSL_free(c->ctypes); + if (c->verify_store) + X509_STORE_free(c->verify_store); + if (c->chain_store) + X509_STORE_free(c->chain_store); + if (c->ciphers_raw) + OPENSSL_free(c->ciphers_raw); +#ifndef OPENSSL_NO_TLSEXT + custom_exts_free(&c->cli_ext); + custom_exts_free(&c->srv_ext); + if (c->alpn_proposed) + OPENSSL_free(c->alpn_proposed); +#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); +} + +int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain) +{ + CERT_PKEY *cpk = c->key; + if (!cpk) + return 0; + if (cpk->chain) + sk_X509_pop_free(cpk->chain, X509_free); + cpk->chain = chain; + return 1; +} + +int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain) +{ + STACK_OF(X509) *dchain; + if (!chain) + return ssl_cert_set0_chain(c, NULL); + dchain = X509_chain_up_ref(chain); + if (!dchain) + return 0; + if (!ssl_cert_set0_chain(c, dchain)) { + sk_X509_pop_free(dchain, X509_free); + return 0; + } + return 1; +} + +int ssl_cert_add0_chain_cert(CERT *c, X509 *x) +{ + CERT_PKEY *cpk = c->key; + if (!cpk) + return 0; + if (!cpk->chain) + cpk->chain = sk_X509_new_null(); + if (!cpk->chain || !sk_X509_push(cpk->chain, x)) + return 0; + return 1; +} + +int ssl_cert_add1_chain_cert(CERT *c, X509 *x) +{ + if (!ssl_cert_add0_chain_cert(c, x)) + return 0; + CRYPTO_add(&x->references, 1, CRYPTO_LOCK_X509); + return 1; +} + +int ssl_cert_select_current(CERT *c, X509 *x) +{ + int i; + if (x == NULL) + return 0; + for (i = 0; i < SSL_PKEY_NUM; i++) { + CERT_PKEY *cpk = c->pkeys + i; + if (cpk->x509 == x && cpk->privatekey) { + c->key = cpk; + return 1; + } + } + + for (i = 0; i < SSL_PKEY_NUM; i++) { + CERT_PKEY *cpk = c->pkeys + i; + if (cpk->privatekey && cpk->x509 && !X509_cmp(cpk->x509, x)) { + c->key = cpk; + return 1; + } + } + return 0; +} + +int ssl_cert_set_current(CERT *c, long op) +{ + int i, idx; + if (!c) + return 0; + if (op == SSL_CERT_SET_FIRST) + idx = 0; + else if (op == SSL_CERT_SET_NEXT) { + idx = (int)(c->key - c->pkeys + 1); + if (idx >= SSL_PKEY_NUM) + return 0; + } else + return 0; + for (i = idx; i < SSL_PKEY_NUM; i++) { + CERT_PKEY *cpk = c->pkeys + i; + if (cpk->x509 && cpk->privatekey) { + c->key = cpk; + return 1; + } + } + return 0; +} + +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; +} + +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 *verify_store; + X509_STORE_CTX ctx; + + if (s->cert->verify_store) + verify_store = s->cert->verify_store; + else + verify_store = s->ctx->cert_store; + + if ((sk == NULL) || (sk_X509_num(sk) == 0)) + return (0); + + x = sk_X509_value(sk, 0); + if (!X509_STORE_CTX_init(&ctx, verify_store, x, sk)) { + SSLerr(SSL_F_SSL_VERIFY_CERT_CHAIN, ERR_R_X509_LIB); + return (0); + } + /* Set suite B flags if needed */ + X509_STORE_CTX_set_flags(&ctx, tls1_suiteb(s)); +#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; +} + +/* Add a certificate to a BUF_MEM structure */ + +static int ssl_add_cert_to_buf(BUF_MEM *buf, unsigned long *l, X509 *x) +{ + int n; + unsigned char *p; + + n = i2d_X509(x, NULL); + if (n < 0 || !BUF_MEM_grow_clean(buf, (int)(n + (*l) + 3))) { + SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB); + return 0; + } + p = (unsigned char *)&(buf->data[*l]); + l2n3(n, p); + n = i2d_X509(x, &p); + if (n < 0) { + /* Shouldn't happen */ + SSLerr(SSL_F_SSL_ADD_CERT_TO_BUF, ERR_R_BUF_LIB); + return 0; + } + *l += n + 3; + + return 1; +} + +/* Add certificate chain to internal SSL BUF_MEM strcuture */ +int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l) +{ + BUF_MEM *buf = s->init_buf; + int no_chain; + int i; + + X509 *x; + STACK_OF(X509) *extra_certs; + X509_STORE *chain_store; + + if (cpk) + x = cpk->x509; + else + x = NULL; + + if (s->cert->chain_store) + chain_store = s->cert->chain_store; + else + chain_store = s->ctx->cert_store; + + /* + * If we have a certificate specific chain use it, else use parent ctx. + */ + if (cpk && cpk->chain) + extra_certs = cpk->chain; + else + extra_certs = s->ctx->extra_certs; + + if ((s->mode & SSL_MODE_NO_AUTO_CHAIN) || extra_certs) + no_chain = 1; + else + no_chain = 0; + + /* TLSv1 sends a chain with nothing in it, instead of an alert */ + if (!BUF_MEM_grow_clean(buf, 10)) { + SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_BUF_LIB); + return 0; + } + if (x != NULL) { + if (no_chain) { + if (!ssl_add_cert_to_buf(buf, l, x)) + return 0; + } else { + X509_STORE_CTX xs_ctx; + + if (!X509_STORE_CTX_init(&xs_ctx, chain_store, x, NULL)) { + SSLerr(SSL_F_SSL_ADD_CERT_CHAIN, ERR_R_X509_LIB); + return (0); + } + X509_verify_cert(&xs_ctx); + /* Don't leave errors in the queue */ + ERR_clear_error(); + for (i = 0; i < sk_X509_num(xs_ctx.chain); i++) { + x = sk_X509_value(xs_ctx.chain, i); + + if (!ssl_add_cert_to_buf(buf, l, x)) { + X509_STORE_CTX_cleanup(&xs_ctx); + return 0; + } + } + X509_STORE_CTX_cleanup(&xs_ctx); + } + } + for (i = 0; i < sk_X509_num(extra_certs); i++) { + x = sk_X509_value(extra_certs, i); + if (!ssl_add_cert_to_buf(buf, l, x)) + return 0; + } + + return 1; +} + +/* Build a certificate chain for current certificate */ +int ssl_build_cert_chain(CERT *c, X509_STORE *chain_store, int flags) +{ + CERT_PKEY *cpk = c->key; + X509_STORE_CTX xs_ctx; + STACK_OF(X509) *chain = NULL, *untrusted = NULL; + X509 *x; + int i, rv = 0; + unsigned long error; + + if (!cpk->x509) { + SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_NO_CERTIFICATE_SET); + goto err; + } + /* Rearranging and check the chain: add everything to a store */ + if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) { + chain_store = X509_STORE_new(); + if (!chain_store) + goto err; + for (i = 0; i < sk_X509_num(cpk->chain); i++) { + x = sk_X509_value(cpk->chain, i); + if (!X509_STORE_add_cert(chain_store, x)) { + error = ERR_peek_last_error(); + if (ERR_GET_LIB(error) != ERR_LIB_X509 || + ERR_GET_REASON(error) != + X509_R_CERT_ALREADY_IN_HASH_TABLE) + goto err; + ERR_clear_error(); + } + } + /* Add EE cert too: it might be self signed */ + if (!X509_STORE_add_cert(chain_store, cpk->x509)) { + error = ERR_peek_last_error(); + if (ERR_GET_LIB(error) != ERR_LIB_X509 || + ERR_GET_REASON(error) != X509_R_CERT_ALREADY_IN_HASH_TABLE) + goto err; + ERR_clear_error(); + } + } else { + if (c->chain_store) + chain_store = c->chain_store; + + if (flags & SSL_BUILD_CHAIN_FLAG_UNTRUSTED) + untrusted = cpk->chain; + } + + if (!X509_STORE_CTX_init(&xs_ctx, chain_store, cpk->x509, untrusted)) { + SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, ERR_R_X509_LIB); + goto err; + } + /* Set suite B flags if needed */ + X509_STORE_CTX_set_flags(&xs_ctx, + c->cert_flags & SSL_CERT_FLAG_SUITEB_128_LOS); + + i = X509_verify_cert(&xs_ctx); + if (i <= 0 && flags & SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR) { + if (flags & SSL_BUILD_CHAIN_FLAG_CLEAR_ERROR) + ERR_clear_error(); + i = 1; + rv = 2; + } + if (i > 0) + chain = X509_STORE_CTX_get1_chain(&xs_ctx); + if (i <= 0) { + SSLerr(SSL_F_SSL_BUILD_CERT_CHAIN, SSL_R_CERTIFICATE_VERIFY_FAILED); + i = X509_STORE_CTX_get_error(&xs_ctx); + ERR_add_error_data(2, "Verify error:", + X509_verify_cert_error_string(i)); + + X509_STORE_CTX_cleanup(&xs_ctx); + goto err; + } + X509_STORE_CTX_cleanup(&xs_ctx); + if (cpk->chain) + sk_X509_pop_free(cpk->chain, X509_free); + /* Remove EE certificate from chain */ + x = sk_X509_shift(chain); + X509_free(x); + if (flags & SSL_BUILD_CHAIN_FLAG_NO_ROOT) { + if (sk_X509_num(chain) > 0) { + /* See if last cert is self signed */ + x = sk_X509_value(chain, sk_X509_num(chain) - 1); + X509_check_purpose(x, -1, 0); + if (x->ex_flags & EXFLAG_SS) { + x = sk_X509_pop(chain); + X509_free(x); + } + } + } + cpk->chain = chain; + if (rv == 0) + rv = 1; + err: + if (flags & SSL_BUILD_CHAIN_FLAG_CHECK) + X509_STORE_free(chain_store); + + return rv; +} + +int ssl_cert_set_cert_store(CERT *c, X509_STORE *store, int chain, int ref) +{ + X509_STORE **pstore; + if (chain) + pstore = &c->chain_store; + else + pstore = &c->verify_store; + if (*pstore) + X509_STORE_free(*pstore); + *pstore = store; + if (ref && store) + CRYPTO_add(&store->references, 1, CRYPTO_LOCK_X509_STORE); + return 1; +} |