diff options
Diffstat (limited to 'drivers/builtin_openssl2/ssl/ssl_cert.c')
| -rw-r--r-- | drivers/builtin_openssl2/ssl/ssl_cert.c | 544 |
1 files changed, 501 insertions, 43 deletions
diff --git a/drivers/builtin_openssl2/ssl/ssl_cert.c b/drivers/builtin_openssl2/ssl/ssl_cert.c index 9a4e104149..a73f866cb9 100644 --- a/drivers/builtin_openssl2/ssl/ssl_cert.c +++ b/drivers/builtin_openssl2/ssl/ssl_cert.c @@ -139,29 +139,50 @@ 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 (((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 */ - 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; + CRYPTO_r_lock(CRYPTO_LOCK_SSL_CTX); 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); + 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); + 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; + return ssl_x509_store_ctx_idx; + } } -static void ssl_cert_set_default_md(CERT *cert) +void ssl_cert_set_default_md(CERT *cert) { /* Set digest values to defaults */ #ifndef OPENSSL_NO_DSA @@ -263,31 +284,111 @@ CERT *ssl_cert_dup(CERT *cert) } } 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++) { - 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); + 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 (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); + if (cpk->privatekey != NULL) { + rpk->privatekey = cpk->privatekey; + CRYPTO_add(&cpk->privatekey->references, 1, CRYPTO_LOCK_EVP_PKEY); } - } - /* - * ret->extra_certs *should* exist, but currently the own certificate - * chain is held inside SSL_CTX - */ + 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); @@ -307,16 +408,49 @@ CERT *ssl_cert_dup(CERT *cert) 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); - } +#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; @@ -350,16 +484,27 @@ void ssl_cert_free(CERT *c) 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); + 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); #endif - } OPENSSL_free(c); } @@ -388,6 +533,104 @@ int ssl_cert_inst(CERT **o) 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; @@ -466,16 +709,24 @@ 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, s->ctx->cert_store, x, sk)) { + 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)); @@ -797,3 +1048,210 @@ int SSL_add_dir_cert_subjects_to_stack(STACK_OF(X509_NAME) *stack, 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 (!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); + i2d_X509(x, &p); + *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; +} |