2 * SSL/TLS interface functions for OpenSSL
3 * Copyright (c) 2004-2013, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
11 #ifndef CONFIG_SMARTCARD
12 #ifndef OPENSSL_NO_ENGINE
14 #define OPENSSL_NO_ENGINE
19 #include <openssl/ssl.h>
20 #include <openssl/err.h>
21 #include <openssl/pkcs12.h>
22 #include <openssl/x509v3.h>
23 #ifndef OPENSSL_NO_ENGINE
24 #include <openssl/engine.h>
25 #endif /* OPENSSL_NO_ENGINE */
31 #if defined(SSL_CTX_get_app_data) && defined(SSL_CTX_set_app_data)
32 #define OPENSSL_SUPPORTS_CTX_APP_DATA
35 #if OPENSSL_VERSION_NUMBER < 0x10000000L
36 /* ERR_remove_thread_state replaces ERR_remove_state and the latter is
37 * deprecated. However, OpenSSL 0.9.8 doesn't include
38 * ERR_remove_thread_state. */
39 #define ERR_remove_thread_state(tid) ERR_remove_state(0)
42 #if defined(OPENSSL_IS_BORINGSSL)
43 /* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */
44 typedef size_t stack_index_t;
46 typedef int stack_index_t;
49 #ifdef SSL_set_tlsext_status_type
50 #ifndef OPENSSL_NO_TLSEXT
52 #include <openssl/ocsp.h>
53 #endif /* OPENSSL_NO_TLSEXT */
54 #endif /* SSL_set_tlsext_status_type */
57 #include <openssl/pem.h>
58 #include <keystore/keystore_get.h>
60 static BIO * BIO_from_keystore(const char *key)
63 uint8_t *value = NULL;
64 int length = keystore_get(key, strlen(key), &value);
65 if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL)
66 BIO_write(bio, value, length);
72 static int tls_openssl_ref_count = 0;
75 void (*event_cb)(void *ctx, enum tls_event ev,
76 union tls_event_data *data);
79 char *ocsp_stapling_response;
82 static struct tls_context *tls_global = NULL;
85 struct tls_connection {
86 struct tls_context *context;
89 BIO *ssl_in, *ssl_out;
90 #ifndef OPENSSL_NO_ENGINE
91 ENGINE *engine; /* functional reference to the engine */
92 EVP_PKEY *private_key; /* the private key if using engine */
93 #endif /* OPENSSL_NO_ENGINE */
94 char *subject_match, *altsubject_match, *suffix_match, *domain_match;
95 int read_alerts, write_alerts, failed;
97 tls_session_ticket_cb session_ticket_cb;
98 void *session_ticket_cb_ctx;
100 /* SessionTicket received from OpenSSL hello_extension_cb (server) */
102 size_t session_ticket_len;
104 unsigned int ca_cert_verify:1;
105 unsigned int cert_probe:1;
106 unsigned int server_cert_only:1;
107 unsigned int invalid_hb_used:1;
109 u8 srv_cert_hash[32];
115 X509 *peer_issuer_issuer;
119 static struct tls_context * tls_context_new(const struct tls_config *conf)
121 struct tls_context *context = os_zalloc(sizeof(*context));
125 context->event_cb = conf->event_cb;
126 context->cb_ctx = conf->cb_ctx;
127 context->cert_in_cb = conf->cert_in_cb;
133 #ifdef CONFIG_NO_STDOUT_DEBUG
135 static void _tls_show_errors(void)
139 while ((err = ERR_get_error())) {
140 /* Just ignore the errors, since stdout is disabled */
143 #define tls_show_errors(l, f, t) _tls_show_errors()
145 #else /* CONFIG_NO_STDOUT_DEBUG */
147 static void tls_show_errors(int level, const char *func, const char *txt)
151 wpa_printf(level, "OpenSSL: %s - %s %s",
152 func, txt, ERR_error_string(ERR_get_error(), NULL));
154 while ((err = ERR_get_error())) {
155 wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
156 ERR_error_string(err, NULL));
160 #endif /* CONFIG_NO_STDOUT_DEBUG */
163 #ifdef CONFIG_NATIVE_WINDOWS
165 /* Windows CryptoAPI and access to certificate stores */
166 #include <wincrypt.h>
168 #ifdef __MINGW32_VERSION
170 * MinGW does not yet include all the needed definitions for CryptoAPI, so
171 * define here whatever extra is needed.
173 #define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
174 #define CERT_STORE_READONLY_FLAG 0x00008000
175 #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
177 #endif /* __MINGW32_VERSION */
180 struct cryptoapi_rsa_data {
181 const CERT_CONTEXT *cert;
182 HCRYPTPROV crypt_prov;
184 BOOL free_crypt_prov;
188 static void cryptoapi_error(const char *msg)
190 wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
191 msg, (unsigned int) GetLastError());
195 static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
196 unsigned char *to, RSA *rsa, int padding)
198 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
203 static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
204 unsigned char *to, RSA *rsa, int padding)
206 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
211 static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
212 unsigned char *to, RSA *rsa, int padding)
214 struct cryptoapi_rsa_data *priv =
215 (struct cryptoapi_rsa_data *) rsa->meth->app_data;
217 DWORD hash_size, len, i;
218 unsigned char *buf = NULL;
222 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
223 ERR_R_PASSED_NULL_PARAMETER);
227 if (padding != RSA_PKCS1_PADDING) {
228 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
229 RSA_R_UNKNOWN_PADDING_TYPE);
233 if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
234 wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
236 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
237 RSA_R_INVALID_MESSAGE_LENGTH);
241 if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
243 cryptoapi_error("CryptCreateHash failed");
247 len = sizeof(hash_size);
248 if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
250 cryptoapi_error("CryptGetHashParam failed");
254 if ((int) hash_size != flen) {
255 wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
256 (unsigned) hash_size, flen);
257 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
258 RSA_R_INVALID_MESSAGE_LENGTH);
261 if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
262 cryptoapi_error("CryptSetHashParam failed");
267 buf = os_malloc(len);
269 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
273 if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
274 cryptoapi_error("CryptSignHash failed");
278 for (i = 0; i < len; i++)
279 to[i] = buf[len - i - 1];
284 CryptDestroyHash(hash);
290 static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
291 unsigned char *to, RSA *rsa, int padding)
293 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
298 static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
302 if (priv->crypt_prov && priv->free_crypt_prov)
303 CryptReleaseContext(priv->crypt_prov, 0);
305 CertFreeCertificateContext(priv->cert);
310 static int cryptoapi_finish(RSA *rsa)
312 cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
313 os_free((void *) rsa->meth);
319 static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
322 const CERT_CONTEXT *ret = NULL;
324 cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
325 store | CERT_STORE_OPEN_EXISTING_FLAG |
326 CERT_STORE_READONLY_FLAG, L"MY");
328 cryptoapi_error("Failed to open 'My system store'");
332 if (strncmp(name, "cert://", 7) == 0) {
333 unsigned short wbuf[255];
334 MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
335 ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
337 0, CERT_FIND_SUBJECT_STR,
339 } else if (strncmp(name, "hash://", 7) == 0) {
340 CRYPT_HASH_BLOB blob;
342 const char *hash = name + 7;
345 len = os_strlen(hash) / 2;
346 buf = os_malloc(len);
347 if (buf && hexstr2bin(hash, buf, len) == 0) {
350 ret = CertFindCertificateInStore(cs,
359 CertCloseStore(cs, 0);
365 static int tls_cryptoapi_cert(SSL *ssl, const char *name)
368 RSA *rsa = NULL, *pub_rsa;
369 struct cryptoapi_rsa_data *priv;
370 RSA_METHOD *rsa_meth;
373 (strncmp(name, "cert://", 7) != 0 &&
374 strncmp(name, "hash://", 7) != 0))
377 priv = os_zalloc(sizeof(*priv));
378 rsa_meth = os_zalloc(sizeof(*rsa_meth));
379 if (priv == NULL || rsa_meth == NULL) {
380 wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
381 "for CryptoAPI RSA method");
387 priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
388 if (priv->cert == NULL) {
389 priv->cert = cryptoapi_find_cert(
390 name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
392 if (priv->cert == NULL) {
393 wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
398 cert = d2i_X509(NULL,
399 (const unsigned char **) &priv->cert->pbCertEncoded,
400 priv->cert->cbCertEncoded);
402 wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
407 if (!CryptAcquireCertificatePrivateKey(priv->cert,
408 CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
409 NULL, &priv->crypt_prov,
411 &priv->free_crypt_prov)) {
412 cryptoapi_error("Failed to acquire a private key for the "
417 rsa_meth->name = "Microsoft CryptoAPI RSA Method";
418 rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
419 rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
420 rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
421 rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
422 rsa_meth->finish = cryptoapi_finish;
423 rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
424 rsa_meth->app_data = (char *) priv;
428 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
429 ERR_R_MALLOC_FAILURE);
433 if (!SSL_use_certificate(ssl, cert)) {
438 pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
442 rsa->n = BN_dup(pub_rsa->n);
443 rsa->e = BN_dup(pub_rsa->e);
444 if (!RSA_set_method(rsa, rsa_meth))
447 if (!SSL_use_RSAPrivateKey(ssl, rsa))
460 cryptoapi_free_data(priv);
466 static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
469 PCCERT_CONTEXT ctx = NULL;
477 if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
482 wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
485 wsprintf(wstore, L"%S", store);
486 cs = CertOpenSystemStore(0, wstore);
489 cs = CertOpenSystemStore(0, store);
492 wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
493 "'%s': error=%d", __func__, store,
494 (int) GetLastError());
498 while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
499 cert = d2i_X509(NULL,
500 (const unsigned char **) &ctx->pbCertEncoded,
503 wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
504 "X509 DER encoding for CA cert");
508 X509_NAME_oneline(X509_get_subject_name(cert), buf,
510 wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
511 "system certificate store: subject='%s'", buf);
513 if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
514 tls_show_errors(MSG_WARNING, __func__,
515 "Failed to add ca_cert to OpenSSL "
516 "certificate store");
522 if (!CertCloseStore(cs, 0)) {
523 wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
524 "'%s': error=%d", __func__, name + 13,
525 (int) GetLastError());
532 #else /* CONFIG_NATIVE_WINDOWS */
534 static int tls_cryptoapi_cert(SSL *ssl, const char *name)
539 #endif /* CONFIG_NATIVE_WINDOWS */
542 static void ssl_info_cb(const SSL *ssl, int where, int ret)
547 wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
548 w = where & ~SSL_ST_MASK;
549 if (w & SSL_ST_CONNECT)
551 else if (w & SSL_ST_ACCEPT)
556 if (where & SSL_CB_LOOP) {
557 wpa_printf(MSG_DEBUG, "SSL: %s:%s",
558 str, SSL_state_string_long(ssl));
559 } else if (where & SSL_CB_ALERT) {
560 struct tls_connection *conn = SSL_get_app_data((SSL *) ssl);
561 wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
562 where & SSL_CB_READ ?
563 "read (remote end reported an error)" :
564 "write (local SSL3 detected an error)",
565 SSL_alert_type_string_long(ret),
566 SSL_alert_desc_string_long(ret));
567 if ((ret >> 8) == SSL3_AL_FATAL) {
568 if (where & SSL_CB_READ)
571 conn->write_alerts++;
573 if (conn->context->event_cb != NULL) {
574 union tls_event_data ev;
575 struct tls_context *context = conn->context;
576 os_memset(&ev, 0, sizeof(ev));
577 ev.alert.is_local = !(where & SSL_CB_READ);
578 ev.alert.type = SSL_alert_type_string_long(ret);
579 ev.alert.description = SSL_alert_desc_string_long(ret);
580 context->event_cb(context->cb_ctx, TLS_ALERT, &ev);
582 } else if (where & SSL_CB_EXIT && ret <= 0) {
583 wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
584 str, ret == 0 ? "failed" : "error",
585 SSL_state_string_long(ssl));
590 #ifndef OPENSSL_NO_ENGINE
592 * tls_engine_load_dynamic_generic - load any openssl engine
593 * @pre: an array of commands and values that load an engine initialized
594 * in the engine specific function
595 * @post: an array of commands and values that initialize an already loaded
596 * engine (or %NULL if not required)
597 * @id: the engine id of the engine to load (only required if post is not %NULL
599 * This function is a generic function that loads any openssl engine.
601 * Returns: 0 on success, -1 on failure
603 static int tls_engine_load_dynamic_generic(const char *pre[],
604 const char *post[], const char *id)
607 const char *dynamic_id = "dynamic";
609 engine = ENGINE_by_id(id);
612 wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
618 engine = ENGINE_by_id(dynamic_id);
619 if (engine == NULL) {
620 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
622 ERR_error_string(ERR_get_error(), NULL));
626 /* Perform the pre commands. This will load the engine. */
627 while (pre && pre[0]) {
628 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
629 if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
630 wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
631 "%s %s [%s]", pre[0], pre[1],
632 ERR_error_string(ERR_get_error(), NULL));
640 * Free the reference to the "dynamic" engine. The loaded engine can
641 * now be looked up using ENGINE_by_id().
645 engine = ENGINE_by_id(id);
646 if (engine == NULL) {
647 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
648 id, ERR_error_string(ERR_get_error(), NULL));
652 while (post && post[0]) {
653 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
654 if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
655 wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
656 " %s %s [%s]", post[0], post[1],
657 ERR_error_string(ERR_get_error(), NULL));
658 ENGINE_remove(engine);
671 * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
672 * @pkcs11_so_path: pksc11_so_path from the configuration
673 * @pcks11_module_path: pkcs11_module_path from the configuration
675 static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
676 const char *pkcs11_module_path)
678 char *engine_id = "pkcs11";
679 const char *pre_cmd[] = {
680 "SO_PATH", NULL /* pkcs11_so_path */,
681 "ID", NULL /* engine_id */,
683 /* "NO_VCHECK", "1", */
687 const char *post_cmd[] = {
688 "MODULE_PATH", NULL /* pkcs11_module_path */,
695 pre_cmd[1] = pkcs11_so_path;
696 pre_cmd[3] = engine_id;
697 if (pkcs11_module_path)
698 post_cmd[1] = pkcs11_module_path;
702 wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
705 return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
710 * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
711 * @opensc_so_path: opensc_so_path from the configuration
713 static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
715 char *engine_id = "opensc";
716 const char *pre_cmd[] = {
717 "SO_PATH", NULL /* opensc_so_path */,
718 "ID", NULL /* engine_id */,
727 pre_cmd[1] = opensc_so_path;
728 pre_cmd[3] = engine_id;
730 wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
733 return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
735 #endif /* OPENSSL_NO_ENGINE */
738 void * tls_init(const struct tls_config *conf)
741 struct tls_context *context;
744 if (tls_openssl_ref_count == 0) {
745 tls_global = context = tls_context_new(conf);
750 if (conf && conf->fips_mode) {
751 if (!FIPS_mode_set(1)) {
752 wpa_printf(MSG_ERROR, "Failed to enable FIPS "
754 ERR_load_crypto_strings();
755 ERR_print_errors_fp(stderr);
760 wpa_printf(MSG_INFO, "Running in FIPS mode");
762 #else /* OPENSSL_FIPS */
763 if (conf && conf->fips_mode) {
764 wpa_printf(MSG_ERROR, "FIPS mode requested, but not "
770 #endif /* OPENSSL_FIPS */
771 #endif /* CONFIG_FIPS */
772 SSL_load_error_strings();
774 #ifndef OPENSSL_NO_SHA256
775 EVP_add_digest(EVP_sha256());
776 #endif /* OPENSSL_NO_SHA256 */
777 /* TODO: if /dev/urandom is available, PRNG is seeded
778 * automatically. If this is not the case, random data should
782 #ifndef OPENSSL_NO_RC2
784 * 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
785 * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
786 * versions, but it looks like OpenSSL 1.0.0 does not do that
789 EVP_add_cipher(EVP_rc2_40_cbc());
790 #endif /* OPENSSL_NO_RC2 */
792 #endif /* PKCS12_FUNCS */
794 #ifdef OPENSSL_SUPPORTS_CTX_APP_DATA
795 /* Newer OpenSSL can store app-data per-SSL */
796 context = tls_context_new(conf);
799 #else /* OPENSSL_SUPPORTS_CTX_APP_DATA */
800 context = tls_global;
801 #endif /* OPENSSL_SUPPORTS_CTX_APP_DATA */
803 tls_openssl_ref_count++;
805 ssl = SSL_CTX_new(SSLv23_method());
807 tls_openssl_ref_count--;
808 #ifdef OPENSSL_SUPPORTS_CTX_APP_DATA
809 if (context != tls_global)
811 #endif /* OPENSSL_SUPPORTS_CTX_APP_DATA */
812 if (tls_openssl_ref_count == 0) {
819 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2);
820 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3);
822 SSL_CTX_set_info_callback(ssl, ssl_info_cb);
823 #ifdef OPENSSL_SUPPORTS_CTX_APP_DATA
824 SSL_CTX_set_app_data(ssl, context);
825 #endif /* OPENSSL_SUPPORTS_CTX_APP_DATA */
827 #ifndef OPENSSL_NO_ENGINE
828 wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine");
829 ERR_load_ENGINE_strings();
830 ENGINE_load_dynamic();
833 (conf->opensc_engine_path || conf->pkcs11_engine_path ||
834 conf->pkcs11_module_path)) {
835 if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
836 tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
837 conf->pkcs11_module_path)) {
842 #endif /* OPENSSL_NO_ENGINE */
844 if (conf && conf->openssl_ciphers)
845 ciphers = conf->openssl_ciphers;
847 ciphers = "DEFAULT:!EXP:!LOW";
848 if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) {
849 wpa_printf(MSG_ERROR,
850 "OpenSSL: Failed to set cipher string '%s'",
860 void tls_deinit(void *ssl_ctx)
862 SSL_CTX *ssl = ssl_ctx;
863 #ifdef OPENSSL_SUPPORTS_CTX_APP_DATA
864 struct tls_context *context = SSL_CTX_get_app_data(ssl);
865 if (context != tls_global)
867 #endif /* OPENSSL_SUPPORTS_CTX_APP_DATA */
870 tls_openssl_ref_count--;
871 if (tls_openssl_ref_count == 0) {
872 #ifndef OPENSSL_NO_ENGINE
874 #endif /* OPENSSL_NO_ENGINE */
875 CRYPTO_cleanup_all_ex_data();
876 ERR_remove_thread_state(NULL);
879 os_free(tls_global->ocsp_stapling_response);
880 tls_global->ocsp_stapling_response = NULL;
887 static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
888 const char *pin, const char *key_id,
889 const char *cert_id, const char *ca_cert_id)
891 #ifndef OPENSSL_NO_ENGINE
893 if (engine_id == NULL) {
894 wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
900 ENGINE_load_dynamic();
902 conn->engine = ENGINE_by_id(engine_id);
904 wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
905 engine_id, ERR_error_string(ERR_get_error(), NULL));
908 if (ENGINE_init(conn->engine) != 1) {
909 wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
910 "(engine: %s) [%s]", engine_id,
911 ERR_error_string(ERR_get_error(), NULL));
914 wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
917 if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
918 wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
919 ERR_error_string(ERR_get_error(), NULL));
925 * Ensure that the ENGINE does not attempt to use the OpenSSL
926 * UI system to obtain a PIN, if we didn't provide one.
929 const void *password;
930 const char *prompt_info;
931 } key_cb = { "", NULL };
933 /* load private key first in-case PIN is required for cert */
934 conn->private_key = ENGINE_load_private_key(conn->engine,
937 if (!conn->private_key) {
938 wpa_printf(MSG_ERROR,
939 "ENGINE: cannot load private key with id '%s' [%s]",
941 ERR_error_string(ERR_get_error(), NULL));
942 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
947 /* handle a certificate and/or CA certificate */
948 if (cert_id || ca_cert_id) {
949 const char *cmd_name = "LOAD_CERT_CTRL";
951 /* test if the engine supports a LOAD_CERT_CTRL */
952 if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME,
953 0, (void *)cmd_name, NULL)) {
954 wpa_printf(MSG_ERROR, "ENGINE: engine does not support"
955 " loading certificates");
956 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
965 ENGINE_free(conn->engine);
969 if (conn->private_key) {
970 EVP_PKEY_free(conn->private_key);
971 conn->private_key = NULL;
975 #else /* OPENSSL_NO_ENGINE */
977 #endif /* OPENSSL_NO_ENGINE */
981 static void tls_engine_deinit(struct tls_connection *conn)
983 #ifndef OPENSSL_NO_ENGINE
984 wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
985 if (conn->private_key) {
986 EVP_PKEY_free(conn->private_key);
987 conn->private_key = NULL;
990 ENGINE_finish(conn->engine);
993 #endif /* OPENSSL_NO_ENGINE */
997 int tls_get_errors(void *ssl_ctx)
1002 while ((err = ERR_get_error())) {
1003 wpa_printf(MSG_INFO, "TLS - SSL error: %s",
1004 ERR_error_string(err, NULL));
1012 static void tls_msg_cb(int write_p, int version, int content_type,
1013 const void *buf, size_t len, SSL *ssl, void *arg)
1015 struct tls_connection *conn = arg;
1016 const u8 *pos = buf;
1018 wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d",
1019 write_p ? "TX" : "RX", version, content_type);
1020 wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len);
1021 if (content_type == 24 && len >= 3 && pos[0] == 1) {
1022 size_t payload_len = WPA_GET_BE16(pos + 1);
1023 if (payload_len + 3 > len) {
1024 wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected");
1025 conn->invalid_hb_used = 1;
1031 struct tls_connection * tls_connection_init(void *ssl_ctx)
1033 SSL_CTX *ssl = ssl_ctx;
1034 struct tls_connection *conn;
1036 #ifdef OPENSSL_SUPPORTS_CTX_APP_DATA
1037 struct tls_context *context = SSL_CTX_get_app_data(ssl);
1038 #else /* OPENSSL_SUPPORTS_CTX_APP_DATA */
1039 struct tls_context *context = tls_global;
1040 #endif /* OPENSSL_SUPPORTS_CTX_APP_DATA */
1042 conn = os_zalloc(sizeof(*conn));
1045 conn->ssl_ctx = ssl_ctx;
1046 conn->ssl = SSL_new(ssl);
1047 if (conn->ssl == NULL) {
1048 tls_show_errors(MSG_INFO, __func__,
1049 "Failed to initialize new SSL connection");
1054 conn->context = context;
1055 SSL_set_app_data(conn->ssl, conn);
1056 SSL_set_msg_callback(conn->ssl, tls_msg_cb);
1057 SSL_set_msg_callback_arg(conn->ssl, conn);
1058 options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
1059 SSL_OP_SINGLE_DH_USE;
1060 #ifdef SSL_OP_NO_COMPRESSION
1061 options |= SSL_OP_NO_COMPRESSION;
1062 #endif /* SSL_OP_NO_COMPRESSION */
1063 SSL_set_options(conn->ssl, options);
1065 conn->ssl_in = BIO_new(BIO_s_mem());
1066 if (!conn->ssl_in) {
1067 tls_show_errors(MSG_INFO, __func__,
1068 "Failed to create a new BIO for ssl_in");
1069 SSL_free(conn->ssl);
1074 conn->ssl_out = BIO_new(BIO_s_mem());
1075 if (!conn->ssl_out) {
1076 tls_show_errors(MSG_INFO, __func__,
1077 "Failed to create a new BIO for ssl_out");
1078 SSL_free(conn->ssl);
1079 BIO_free(conn->ssl_in);
1084 SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
1090 void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
1094 SSL_free(conn->ssl);
1095 tls_engine_deinit(conn);
1096 os_free(conn->subject_match);
1097 os_free(conn->altsubject_match);
1098 os_free(conn->suffix_match);
1099 os_free(conn->domain_match);
1100 os_free(conn->session_ticket);
1105 int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
1107 return conn ? SSL_is_init_finished(conn->ssl) : 0;
1111 int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
1116 /* Shutdown previous TLS connection without notifying the peer
1117 * because the connection was already terminated in practice
1118 * and "close notify" shutdown alert would confuse AS. */
1119 SSL_set_quiet_shutdown(conn->ssl, 1);
1120 SSL_shutdown(conn->ssl);
1125 static int tls_match_altsubject_component(X509 *cert, int type,
1126 const char *value, size_t len)
1133 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1135 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1136 gen = sk_GENERAL_NAME_value(ext, i);
1137 if (gen->type != type)
1139 if (os_strlen((char *) gen->d.ia5->data) == len &&
1140 os_memcmp(value, gen->d.ia5->data, len) == 0)
1148 static int tls_match_altsubject(X509 *cert, const char *match)
1151 const char *pos, *end;
1156 if (os_strncmp(pos, "EMAIL:", 6) == 0) {
1159 } else if (os_strncmp(pos, "DNS:", 4) == 0) {
1162 } else if (os_strncmp(pos, "URI:", 4) == 0) {
1166 wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
1170 end = os_strchr(pos, ';');
1172 if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
1173 os_strncmp(end + 1, "DNS:", 4) == 0 ||
1174 os_strncmp(end + 1, "URI:", 4) == 0)
1176 end = os_strchr(end + 1, ';');
1181 len = os_strlen(pos);
1182 if (tls_match_altsubject_component(cert, type, pos, len) > 0)
1191 #ifndef CONFIG_NATIVE_WINDOWS
1192 static int domain_suffix_match(const u8 *val, size_t len, const char *match,
1195 size_t i, match_len;
1197 /* Check for embedded nuls that could mess up suffix matching */
1198 for (i = 0; i < len; i++) {
1199 if (val[i] == '\0') {
1200 wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject");
1205 match_len = os_strlen(match);
1206 if (match_len > len || (full && match_len != len))
1209 if (os_strncasecmp((const char *) val + len - match_len, match,
1211 return 0; /* no match */
1213 if (match_len == len)
1214 return 1; /* exact match */
1216 if (val[len - match_len - 1] == '.')
1217 return 1; /* full label match completes suffix match */
1219 wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match");
1222 #endif /* CONFIG_NATIVE_WINDOWS */
1225 static int tls_match_suffix(X509 *cert, const char *match, int full)
1227 #ifdef CONFIG_NATIVE_WINDOWS
1228 /* wincrypt.h has conflicting X509_NAME definition */
1230 #else /* CONFIG_NATIVE_WINDOWS */
1238 wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s",
1239 full ? "": "suffix ", match);
1241 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1243 for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) {
1244 gen = sk_GENERAL_NAME_value(ext, j);
1245 if (gen->type != GEN_DNS)
1248 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName",
1249 gen->d.dNSName->data,
1250 gen->d.dNSName->length);
1251 if (domain_suffix_match(gen->d.dNSName->data,
1252 gen->d.dNSName->length, match, full) ==
1254 wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found",
1255 full ? "Match" : "Suffix match");
1261 wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched");
1265 name = X509_get_subject_name(cert);
1271 i = X509_NAME_get_index_by_NID(name, NID_commonName, i);
1274 e = X509_NAME_get_entry(name, i);
1277 cn = X509_NAME_ENTRY_get_data(e);
1280 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName",
1281 cn->data, cn->length);
1282 if (domain_suffix_match(cn->data, cn->length, match, full) == 1)
1284 wpa_printf(MSG_DEBUG, "TLS: %s in commonName found",
1285 full ? "Match" : "Suffix match");
1290 wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found",
1291 full ? "": "suffix ");
1293 #endif /* CONFIG_NATIVE_WINDOWS */
1297 static enum tls_fail_reason openssl_tls_fail_reason(int err)
1300 case X509_V_ERR_CERT_REVOKED:
1301 return TLS_FAIL_REVOKED;
1302 case X509_V_ERR_CERT_NOT_YET_VALID:
1303 case X509_V_ERR_CRL_NOT_YET_VALID:
1304 return TLS_FAIL_NOT_YET_VALID;
1305 case X509_V_ERR_CERT_HAS_EXPIRED:
1306 case X509_V_ERR_CRL_HAS_EXPIRED:
1307 return TLS_FAIL_EXPIRED;
1308 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
1309 case X509_V_ERR_UNABLE_TO_GET_CRL:
1310 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
1311 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
1312 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
1313 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1314 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
1315 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
1316 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
1317 case X509_V_ERR_INVALID_CA:
1318 return TLS_FAIL_UNTRUSTED;
1319 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
1320 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
1321 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
1322 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
1323 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
1324 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
1325 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
1326 case X509_V_ERR_CERT_UNTRUSTED:
1327 case X509_V_ERR_CERT_REJECTED:
1328 return TLS_FAIL_BAD_CERTIFICATE;
1330 return TLS_FAIL_UNSPECIFIED;
1335 static struct wpabuf * get_x509_cert(X509 *cert)
1340 int cert_len = i2d_X509(cert, NULL);
1344 buf = wpabuf_alloc(cert_len);
1348 tmp = wpabuf_put(buf, cert_len);
1349 i2d_X509(cert, &tmp);
1354 static void openssl_tls_fail_event(struct tls_connection *conn,
1355 X509 *err_cert, int err, int depth,
1356 const char *subject, const char *err_str,
1357 enum tls_fail_reason reason)
1359 union tls_event_data ev;
1360 struct wpabuf *cert = NULL;
1361 struct tls_context *context = conn->context;
1363 if (context->event_cb == NULL)
1366 cert = get_x509_cert(err_cert);
1367 os_memset(&ev, 0, sizeof(ev));
1368 ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
1369 reason : openssl_tls_fail_reason(err);
1370 ev.cert_fail.depth = depth;
1371 ev.cert_fail.subject = subject;
1372 ev.cert_fail.reason_txt = err_str;
1373 ev.cert_fail.cert = cert;
1374 context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
1379 static void openssl_tls_cert_event(struct tls_connection *conn,
1380 X509 *err_cert, int depth,
1381 const char *subject)
1383 struct wpabuf *cert = NULL;
1384 union tls_event_data ev;
1385 struct tls_context *context = conn->context;
1386 char *altsubject[TLS_MAX_ALT_SUBJECT];
1387 int alt, num_altsubject = 0;
1391 #ifdef CONFIG_SHA256
1393 #endif /* CONFIG_SHA256 */
1395 if (context->event_cb == NULL)
1398 os_memset(&ev, 0, sizeof(ev));
1399 if (conn->cert_probe || context->cert_in_cb) {
1400 cert = get_x509_cert(err_cert);
1401 ev.peer_cert.cert = cert;
1403 #ifdef CONFIG_SHA256
1407 addr[0] = wpabuf_head(cert);
1408 len[0] = wpabuf_len(cert);
1409 if (sha256_vector(1, addr, len, hash) == 0) {
1410 ev.peer_cert.hash = hash;
1411 ev.peer_cert.hash_len = sizeof(hash);
1414 #endif /* CONFIG_SHA256 */
1415 ev.peer_cert.depth = depth;
1416 ev.peer_cert.subject = subject;
1418 ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL);
1419 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1422 if (num_altsubject == TLS_MAX_ALT_SUBJECT)
1424 gen = sk_GENERAL_NAME_value(ext, i);
1425 if (gen->type != GEN_EMAIL &&
1426 gen->type != GEN_DNS &&
1427 gen->type != GEN_URI)
1430 pos = os_malloc(10 + gen->d.ia5->length + 1);
1433 altsubject[num_altsubject++] = pos;
1435 switch (gen->type) {
1437 os_memcpy(pos, "EMAIL:", 6);
1441 os_memcpy(pos, "DNS:", 4);
1445 os_memcpy(pos, "URI:", 4);
1450 os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length);
1451 pos += gen->d.ia5->length;
1455 for (alt = 0; alt < num_altsubject; alt++)
1456 ev.peer_cert.altsubject[alt] = altsubject[alt];
1457 ev.peer_cert.num_altsubject = num_altsubject;
1459 context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
1461 for (alt = 0; alt < num_altsubject; alt++)
1462 os_free(altsubject[alt]);
1466 static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
1472 struct tls_connection *conn;
1473 struct tls_context *context;
1474 char *match, *altmatch, *suffix_match, *domain_match;
1475 const char *err_str;
1477 err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
1481 err = X509_STORE_CTX_get_error(x509_ctx);
1482 depth = X509_STORE_CTX_get_error_depth(x509_ctx);
1483 ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
1484 SSL_get_ex_data_X509_STORE_CTX_idx());
1485 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
1487 conn = SSL_get_app_data(ssl);
1492 conn->peer_cert = err_cert;
1493 else if (depth == 1)
1494 conn->peer_issuer = err_cert;
1495 else if (depth == 2)
1496 conn->peer_issuer_issuer = err_cert;
1498 context = conn->context;
1499 match = conn->subject_match;
1500 altmatch = conn->altsubject_match;
1501 suffix_match = conn->suffix_match;
1502 domain_match = conn->domain_match;
1504 if (!preverify_ok && !conn->ca_cert_verify)
1506 if (!preverify_ok && depth > 0 && conn->server_cert_only)
1508 if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) &&
1509 (err == X509_V_ERR_CERT_HAS_EXPIRED ||
1510 err == X509_V_ERR_CERT_NOT_YET_VALID)) {
1511 wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity "
1516 err_str = X509_verify_cert_error_string(err);
1518 #ifdef CONFIG_SHA256
1520 * Do not require preverify_ok so we can explicity allow otherwise
1521 * invalid pinned server certificates.
1523 if (depth == 0 && conn->server_cert_only) {
1524 struct wpabuf *cert;
1525 cert = get_x509_cert(err_cert);
1527 wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch "
1528 "server certificate data");
1534 addr[0] = wpabuf_head(cert);
1535 len[0] = wpabuf_len(cert);
1536 if (sha256_vector(1, addr, len, hash) < 0 ||
1537 os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
1538 err_str = "Server certificate mismatch";
1539 err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
1541 } else if (!preverify_ok) {
1543 * Certificate matches pinned certificate, allow
1544 * regardless of other problems.
1546 wpa_printf(MSG_DEBUG,
1547 "OpenSSL: Ignore validation issues for a pinned server certificate");
1553 #endif /* CONFIG_SHA256 */
1555 if (!preverify_ok) {
1556 wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
1557 " error %d (%s) depth %d for '%s'", err, err_str,
1559 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1560 err_str, TLS_FAIL_UNSPECIFIED);
1561 return preverify_ok;
1564 wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d "
1565 "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
1566 preverify_ok, err, err_str,
1567 conn->ca_cert_verify, depth, buf);
1568 if (depth == 0 && match && os_strstr(buf, match) == NULL) {
1569 wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
1570 "match with '%s'", buf, match);
1572 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1574 TLS_FAIL_SUBJECT_MISMATCH);
1575 } else if (depth == 0 && altmatch &&
1576 !tls_match_altsubject(err_cert, altmatch)) {
1577 wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
1578 "'%s' not found", altmatch);
1580 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1581 "AltSubject mismatch",
1582 TLS_FAIL_ALTSUBJECT_MISMATCH);
1583 } else if (depth == 0 && suffix_match &&
1584 !tls_match_suffix(err_cert, suffix_match, 0)) {
1585 wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found",
1588 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1589 "Domain suffix mismatch",
1590 TLS_FAIL_DOMAIN_SUFFIX_MISMATCH);
1591 } else if (depth == 0 && domain_match &&
1592 !tls_match_suffix(err_cert, domain_match, 1)) {
1593 wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found",
1596 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1598 TLS_FAIL_DOMAIN_MISMATCH);
1600 openssl_tls_cert_event(conn, err_cert, depth, buf);
1602 if (conn->cert_probe && preverify_ok && depth == 0) {
1603 wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate "
1604 "on probe-only run");
1606 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1607 "Server certificate chain probe",
1608 TLS_FAIL_SERVER_CHAIN_PROBE);
1611 if (preverify_ok && context->event_cb != NULL)
1612 context->event_cb(context->cb_ctx,
1613 TLS_CERT_CHAIN_SUCCESS, NULL);
1615 return preverify_ok;
1619 #ifndef OPENSSL_NO_STDIO
1620 static int tls_load_ca_der(void *_ssl_ctx, const char *ca_cert)
1622 SSL_CTX *ssl_ctx = _ssl_ctx;
1623 X509_LOOKUP *lookup;
1626 lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx),
1627 X509_LOOKUP_file());
1628 if (lookup == NULL) {
1629 tls_show_errors(MSG_WARNING, __func__,
1630 "Failed add lookup for X509 store");
1634 if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
1635 unsigned long err = ERR_peek_error();
1636 tls_show_errors(MSG_WARNING, __func__,
1637 "Failed load CA in DER format");
1638 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1639 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1640 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1641 "cert already in hash table error",
1649 #endif /* OPENSSL_NO_STDIO */
1652 static int tls_connection_ca_cert(void *_ssl_ctx, struct tls_connection *conn,
1653 const char *ca_cert, const u8 *ca_cert_blob,
1654 size_t ca_cert_blob_len, const char *ca_path)
1656 SSL_CTX *ssl_ctx = _ssl_ctx;
1660 * Remove previously configured trusted CA certificates before adding
1663 store = X509_STORE_new();
1664 if (store == NULL) {
1665 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
1666 "certificate store", __func__);
1669 SSL_CTX_set_cert_store(ssl_ctx, store);
1671 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1672 conn->ca_cert_verify = 1;
1674 if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
1675 wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate "
1677 conn->cert_probe = 1;
1678 conn->ca_cert_verify = 0;
1682 if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
1683 #ifdef CONFIG_SHA256
1684 const char *pos = ca_cert + 7;
1685 if (os_strncmp(pos, "server/sha256/", 14) != 0) {
1686 wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert "
1687 "hash value '%s'", ca_cert);
1691 if (os_strlen(pos) != 32 * 2) {
1692 wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 "
1693 "hash length in ca_cert '%s'", ca_cert);
1696 if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
1697 wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash "
1698 "value in ca_cert '%s'", ca_cert);
1701 conn->server_cert_only = 1;
1702 wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server "
1703 "certificate match");
1705 #else /* CONFIG_SHA256 */
1706 wpa_printf(MSG_INFO, "No SHA256 included in the build - "
1707 "cannot validate server certificate hash");
1709 #endif /* CONFIG_SHA256 */
1713 X509 *cert = d2i_X509(NULL,
1714 (const unsigned char **) &ca_cert_blob,
1717 tls_show_errors(MSG_WARNING, __func__,
1718 "Failed to parse ca_cert_blob");
1722 if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx),
1724 unsigned long err = ERR_peek_error();
1725 tls_show_errors(MSG_WARNING, __func__,
1726 "Failed to add ca_cert_blob to "
1727 "certificate store");
1728 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1729 ERR_GET_REASON(err) ==
1730 X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1731 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1732 "cert already in hash table error",
1740 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
1741 "to certificate store", __func__);
1746 if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) {
1747 BIO *bio = BIO_from_keystore(&ca_cert[11]);
1748 STACK_OF(X509_INFO) *stack = NULL;
1752 stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL);
1758 for (i = 0; i < sk_X509_INFO_num(stack); ++i) {
1759 X509_INFO *info = sk_X509_INFO_value(stack, i);
1761 X509_STORE_add_cert(ssl_ctx->cert_store,
1765 X509_STORE_add_crl(ssl_ctx->cert_store,
1769 sk_X509_INFO_pop_free(stack, X509_INFO_free);
1770 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1773 #endif /* ANDROID */
1775 #ifdef CONFIG_NATIVE_WINDOWS
1776 if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
1778 wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
1779 "system certificate store");
1782 #endif /* CONFIG_NATIVE_WINDOWS */
1784 if (ca_cert || ca_path) {
1785 #ifndef OPENSSL_NO_STDIO
1786 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
1788 tls_show_errors(MSG_WARNING, __func__,
1789 "Failed to load root certificates");
1791 tls_load_ca_der(ssl_ctx, ca_cert) == 0) {
1792 wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
1793 "DER format CA certificate",
1798 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1799 "certificate(s) loaded");
1800 tls_get_errors(ssl_ctx);
1802 #else /* OPENSSL_NO_STDIO */
1803 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
1806 #endif /* OPENSSL_NO_STDIO */
1808 /* No ca_cert configured - do not try to verify server
1810 conn->ca_cert_verify = 0;
1817 static int tls_global_ca_cert(SSL_CTX *ssl_ctx, const char *ca_cert)
1820 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
1822 tls_show_errors(MSG_WARNING, __func__,
1823 "Failed to load root certificates");
1827 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1828 "certificate(s) loaded");
1830 #ifndef OPENSSL_NO_STDIO
1831 /* Add the same CAs to the client certificate requests */
1832 SSL_CTX_set_client_CA_list(ssl_ctx,
1833 SSL_load_client_CA_file(ca_cert));
1834 #endif /* OPENSSL_NO_STDIO */
1841 int tls_global_set_verify(void *ssl_ctx, int check_crl)
1846 X509_STORE *cs = SSL_CTX_get_cert_store(ssl_ctx);
1848 tls_show_errors(MSG_INFO, __func__, "Failed to get "
1849 "certificate store when enabling "
1853 flags = X509_V_FLAG_CRL_CHECK;
1855 flags |= X509_V_FLAG_CRL_CHECK_ALL;
1856 X509_STORE_set_flags(cs, flags);
1862 static int tls_connection_set_subject_match(struct tls_connection *conn,
1863 const char *subject_match,
1864 const char *altsubject_match,
1865 const char *suffix_match,
1866 const char *domain_match)
1868 os_free(conn->subject_match);
1869 conn->subject_match = NULL;
1870 if (subject_match) {
1871 conn->subject_match = os_strdup(subject_match);
1872 if (conn->subject_match == NULL)
1876 os_free(conn->altsubject_match);
1877 conn->altsubject_match = NULL;
1878 if (altsubject_match) {
1879 conn->altsubject_match = os_strdup(altsubject_match);
1880 if (conn->altsubject_match == NULL)
1884 os_free(conn->suffix_match);
1885 conn->suffix_match = NULL;
1887 conn->suffix_match = os_strdup(suffix_match);
1888 if (conn->suffix_match == NULL)
1892 os_free(conn->domain_match);
1893 conn->domain_match = NULL;
1895 conn->domain_match = os_strdup(domain_match);
1896 if (conn->domain_match == NULL)
1904 int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
1907 static int counter = 0;
1913 conn->ca_cert_verify = 1;
1914 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
1915 SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
1916 SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
1918 conn->ca_cert_verify = 0;
1919 SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
1922 SSL_set_accept_state(conn->ssl);
1925 * Set session id context in order to avoid fatal errors when client
1926 * tries to resume a session. However, set the context to a unique
1927 * value in order to effectively disable session resumption for now
1928 * since not all areas of the server code are ready for it (e.g.,
1929 * EAP-TTLS needs special handling for Phase 2 after abbreviated TLS
1933 SSL_set_session_id_context(conn->ssl,
1934 (const unsigned char *) &counter,
1941 static int tls_connection_client_cert(struct tls_connection *conn,
1942 const char *client_cert,
1943 const u8 *client_cert_blob,
1944 size_t client_cert_blob_len)
1946 if (client_cert == NULL && client_cert_blob == NULL)
1949 if (client_cert_blob &&
1950 SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
1951 client_cert_blob_len) == 1) {
1952 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
1955 } else if (client_cert_blob) {
1956 tls_show_errors(MSG_DEBUG, __func__,
1957 "SSL_use_certificate_ASN1 failed");
1960 if (client_cert == NULL)
1964 if (os_strncmp("keystore://", client_cert, 11) == 0) {
1965 BIO *bio = BIO_from_keystore(&client_cert[11]);
1969 x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
1973 if (SSL_use_certificate(conn->ssl, x509) == 1)
1979 #endif /* ANDROID */
1981 #ifndef OPENSSL_NO_STDIO
1982 if (SSL_use_certificate_file(conn->ssl, client_cert,
1983 SSL_FILETYPE_ASN1) == 1) {
1984 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
1989 if (SSL_use_certificate_file(conn->ssl, client_cert,
1990 SSL_FILETYPE_PEM) == 1) {
1992 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
1997 tls_show_errors(MSG_DEBUG, __func__,
1998 "SSL_use_certificate_file failed");
1999 #else /* OPENSSL_NO_STDIO */
2000 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
2001 #endif /* OPENSSL_NO_STDIO */
2007 static int tls_global_client_cert(SSL_CTX *ssl_ctx, const char *client_cert)
2009 #ifndef OPENSSL_NO_STDIO
2010 if (client_cert == NULL)
2013 if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
2014 SSL_FILETYPE_ASN1) != 1 &&
2015 SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 &&
2016 SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
2017 SSL_FILETYPE_PEM) != 1) {
2018 tls_show_errors(MSG_INFO, __func__,
2019 "Failed to load client certificate");
2023 #else /* OPENSSL_NO_STDIO */
2024 if (client_cert == NULL)
2026 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
2028 #endif /* OPENSSL_NO_STDIO */
2032 static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
2034 if (password == NULL) {
2037 os_strlcpy(buf, (char *) password, size);
2038 return os_strlen(buf);
2043 static int tls_parse_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, PKCS12 *p12,
2048 STACK_OF(X509) *certs;
2055 if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
2056 tls_show_errors(MSG_DEBUG, __func__,
2057 "Failed to parse PKCS12 file");
2061 wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
2064 X509_NAME_oneline(X509_get_subject_name(cert), buf,
2066 wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
2067 "subject='%s'", buf);
2069 if (SSL_use_certificate(ssl, cert) != 1)
2072 if (SSL_CTX_use_certificate(ssl_ctx, cert) != 1)
2079 wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
2081 if (SSL_use_PrivateKey(ssl, pkey) != 1)
2084 if (SSL_CTX_use_PrivateKey(ssl_ctx, pkey) != 1)
2087 EVP_PKEY_free(pkey);
2091 while ((cert = sk_X509_pop(certs)) != NULL) {
2092 X509_NAME_oneline(X509_get_subject_name(cert), buf,
2094 wpa_printf(MSG_DEBUG, "TLS: additional certificate"
2095 " from PKCS12: subject='%s'", buf);
2097 * There is no SSL equivalent for the chain cert - so
2098 * always add it to the context...
2100 if (SSL_CTX_add_extra_chain_cert(ssl_ctx, cert) != 1) {
2105 sk_X509_free(certs);
2111 tls_get_errors(ssl_ctx);
2115 #endif /* PKCS12_FUNCS */
2118 static int tls_read_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, const char *private_key,
2125 f = fopen(private_key, "rb");
2129 p12 = d2i_PKCS12_fp(f, NULL);
2133 tls_show_errors(MSG_INFO, __func__,
2134 "Failed to use PKCS#12 file");
2138 return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
2140 #else /* PKCS12_FUNCS */
2141 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
2144 #endif /* PKCS12_FUNCS */
2148 static int tls_read_pkcs12_blob(SSL_CTX *ssl_ctx, SSL *ssl,
2149 const u8 *blob, size_t len, const char *passwd)
2154 p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len);
2156 tls_show_errors(MSG_INFO, __func__,
2157 "Failed to use PKCS#12 blob");
2161 return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
2163 #else /* PKCS12_FUNCS */
2164 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
2167 #endif /* PKCS12_FUNCS */
2171 #ifndef OPENSSL_NO_ENGINE
2172 static int tls_engine_get_cert(struct tls_connection *conn,
2173 const char *cert_id,
2176 /* this runs after the private key is loaded so no PIN is required */
2178 const char *cert_id;
2181 params.cert_id = cert_id;
2184 if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL",
2185 0, ¶ms, NULL, 1)) {
2186 wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id"
2187 " '%s' [%s]", cert_id,
2188 ERR_error_string(ERR_get_error(), NULL));
2189 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
2192 wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id"
2194 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
2196 *cert = params.cert;
2199 #endif /* OPENSSL_NO_ENGINE */
2202 static int tls_connection_engine_client_cert(struct tls_connection *conn,
2203 const char *cert_id)
2205 #ifndef OPENSSL_NO_ENGINE
2208 if (tls_engine_get_cert(conn, cert_id, &cert))
2211 if (!SSL_use_certificate(conn->ssl, cert)) {
2212 tls_show_errors(MSG_ERROR, __func__,
2213 "SSL_use_certificate failed");
2218 wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> "
2222 #else /* OPENSSL_NO_ENGINE */
2224 #endif /* OPENSSL_NO_ENGINE */
2228 static int tls_connection_engine_ca_cert(void *_ssl_ctx,
2229 struct tls_connection *conn,
2230 const char *ca_cert_id)
2232 #ifndef OPENSSL_NO_ENGINE
2234 SSL_CTX *ssl_ctx = _ssl_ctx;
2237 if (tls_engine_get_cert(conn, ca_cert_id, &cert))
2240 /* start off the same as tls_connection_ca_cert */
2241 store = X509_STORE_new();
2242 if (store == NULL) {
2243 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
2244 "certificate store", __func__);
2248 SSL_CTX_set_cert_store(ssl_ctx, store);
2249 if (!X509_STORE_add_cert(store, cert)) {
2250 unsigned long err = ERR_peek_error();
2251 tls_show_errors(MSG_WARNING, __func__,
2252 "Failed to add CA certificate from engine "
2253 "to certificate store");
2254 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2255 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2256 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert"
2257 " already in hash table error",
2265 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
2266 "to certificate store", __func__);
2267 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2268 conn->ca_cert_verify = 1;
2272 #else /* OPENSSL_NO_ENGINE */
2274 #endif /* OPENSSL_NO_ENGINE */
2278 static int tls_connection_engine_private_key(struct tls_connection *conn)
2280 #ifndef OPENSSL_NO_ENGINE
2281 if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
2282 tls_show_errors(MSG_ERROR, __func__,
2283 "ENGINE: cannot use private key for TLS");
2286 if (!SSL_check_private_key(conn->ssl)) {
2287 tls_show_errors(MSG_INFO, __func__,
2288 "Private key failed verification");
2292 #else /* OPENSSL_NO_ENGINE */
2293 wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
2294 "engine support was not compiled in");
2296 #endif /* OPENSSL_NO_ENGINE */
2300 static int tls_connection_private_key(void *_ssl_ctx,
2301 struct tls_connection *conn,
2302 const char *private_key,
2303 const char *private_key_passwd,
2304 const u8 *private_key_blob,
2305 size_t private_key_blob_len)
2307 SSL_CTX *ssl_ctx = _ssl_ctx;
2311 if (private_key == NULL && private_key_blob == NULL)
2314 if (private_key_passwd) {
2315 passwd = os_strdup(private_key_passwd);
2321 SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
2322 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
2325 while (private_key_blob) {
2326 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
2327 (u8 *) private_key_blob,
2328 private_key_blob_len) == 1) {
2329 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
2330 "ASN1(EVP_PKEY_RSA) --> OK");
2335 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
2336 (u8 *) private_key_blob,
2337 private_key_blob_len) == 1) {
2338 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
2339 "ASN1(EVP_PKEY_DSA) --> OK");
2344 if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
2345 (u8 *) private_key_blob,
2346 private_key_blob_len) == 1) {
2347 wpa_printf(MSG_DEBUG, "OpenSSL: "
2348 "SSL_use_RSAPrivateKey_ASN1 --> OK");
2353 if (tls_read_pkcs12_blob(ssl_ctx, conn->ssl, private_key_blob,
2354 private_key_blob_len, passwd) == 0) {
2355 wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
2364 while (!ok && private_key) {
2365 #ifndef OPENSSL_NO_STDIO
2366 if (SSL_use_PrivateKey_file(conn->ssl, private_key,
2367 SSL_FILETYPE_ASN1) == 1) {
2368 wpa_printf(MSG_DEBUG, "OpenSSL: "
2369 "SSL_use_PrivateKey_File (DER) --> OK");
2374 if (SSL_use_PrivateKey_file(conn->ssl, private_key,
2375 SSL_FILETYPE_PEM) == 1) {
2376 wpa_printf(MSG_DEBUG, "OpenSSL: "
2377 "SSL_use_PrivateKey_File (PEM) --> OK");
2381 #else /* OPENSSL_NO_STDIO */
2382 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
2384 #endif /* OPENSSL_NO_STDIO */
2386 if (tls_read_pkcs12(ssl_ctx, conn->ssl, private_key, passwd)
2388 wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
2394 if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
2395 wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
2396 "access certificate store --> OK");
2405 tls_show_errors(MSG_INFO, __func__,
2406 "Failed to load private key");
2411 SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
2414 if (!SSL_check_private_key(conn->ssl)) {
2415 tls_show_errors(MSG_INFO, __func__, "Private key failed "
2420 wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
2425 static int tls_global_private_key(SSL_CTX *ssl_ctx, const char *private_key,
2426 const char *private_key_passwd)
2430 if (private_key == NULL)
2433 if (private_key_passwd) {
2434 passwd = os_strdup(private_key_passwd);
2440 SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
2441 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
2443 #ifndef OPENSSL_NO_STDIO
2444 SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
2445 SSL_FILETYPE_ASN1) != 1 &&
2446 SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
2447 SSL_FILETYPE_PEM) != 1 &&
2448 #endif /* OPENSSL_NO_STDIO */
2449 tls_read_pkcs12(ssl_ctx, NULL, private_key, passwd)) {
2450 tls_show_errors(MSG_INFO, __func__,
2451 "Failed to load private key");
2458 SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
2460 if (!SSL_CTX_check_private_key(ssl_ctx)) {
2461 tls_show_errors(MSG_INFO, __func__,
2462 "Private key failed verification");
2470 static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
2472 #ifdef OPENSSL_NO_DH
2473 if (dh_file == NULL)
2475 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
2476 "dh_file specified");
2478 #else /* OPENSSL_NO_DH */
2482 /* TODO: add support for dh_blob */
2483 if (dh_file == NULL)
2488 bio = BIO_new_file(dh_file, "r");
2490 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
2491 dh_file, ERR_error_string(ERR_get_error(), NULL));
2494 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
2496 #ifndef OPENSSL_NO_DSA
2497 while (dh == NULL) {
2499 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
2500 " trying to parse as DSA params", dh_file,
2501 ERR_error_string(ERR_get_error(), NULL));
2502 bio = BIO_new_file(dh_file, "r");
2505 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
2508 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
2509 "'%s': %s", dh_file,
2510 ERR_error_string(ERR_get_error(), NULL));
2514 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
2515 dh = DSA_dup_DH(dsa);
2518 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
2519 "params into DH params");
2524 #endif /* !OPENSSL_NO_DSA */
2526 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
2531 if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
2532 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
2534 ERR_error_string(ERR_get_error(), NULL));
2540 #endif /* OPENSSL_NO_DH */
2544 static int tls_global_dh(SSL_CTX *ssl_ctx, const char *dh_file)
2546 #ifdef OPENSSL_NO_DH
2547 if (dh_file == NULL)
2549 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
2550 "dh_file specified");
2552 #else /* OPENSSL_NO_DH */
2556 /* TODO: add support for dh_blob */
2557 if (dh_file == NULL)
2559 if (ssl_ctx == NULL)
2562 bio = BIO_new_file(dh_file, "r");
2564 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
2565 dh_file, ERR_error_string(ERR_get_error(), NULL));
2568 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
2570 #ifndef OPENSSL_NO_DSA
2571 while (dh == NULL) {
2573 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
2574 " trying to parse as DSA params", dh_file,
2575 ERR_error_string(ERR_get_error(), NULL));
2576 bio = BIO_new_file(dh_file, "r");
2579 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
2582 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
2583 "'%s': %s", dh_file,
2584 ERR_error_string(ERR_get_error(), NULL));
2588 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
2589 dh = DSA_dup_DH(dsa);
2592 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
2593 "params into DH params");
2598 #endif /* !OPENSSL_NO_DSA */
2600 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
2605 if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) {
2606 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
2608 ERR_error_string(ERR_get_error(), NULL));
2614 #endif /* OPENSSL_NO_DH */
2618 int tls_connection_get_keys(void *ssl_ctx, struct tls_connection *conn,
2619 struct tls_keys *keys)
2622 wpa_printf(MSG_ERROR, "OpenSSL: TLS keys cannot be exported in FIPS "
2625 #else /* CONFIG_FIPS */
2628 if (conn == NULL || keys == NULL)
2631 if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL)
2634 os_memset(keys, 0, sizeof(*keys));
2635 keys->master_key = ssl->session->master_key;
2636 keys->master_key_len = ssl->session->master_key_length;
2637 keys->client_random = ssl->s3->client_random;
2638 keys->client_random_len = SSL3_RANDOM_SIZE;
2639 keys->server_random = ssl->s3->server_random;
2640 keys->server_random_len = SSL3_RANDOM_SIZE;
2643 #endif /* CONFIG_FIPS */
2647 int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
2648 const char *label, int server_random_first,
2649 u8 *out, size_t out_len)
2651 #if OPENSSL_VERSION_NUMBER >= 0x10001000L
2655 if (server_random_first)
2658 if (SSL_export_keying_material(ssl, out, out_len, label,
2659 os_strlen(label), NULL, 0, 0) == 1) {
2660 wpa_printf(MSG_DEBUG, "OpenSSL: Using internal PRF");
2668 static struct wpabuf *
2669 openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data,
2673 struct wpabuf *out_data;
2676 * Give TLS handshake data from the server (if available) to OpenSSL
2680 BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data))
2682 tls_show_errors(MSG_INFO, __func__,
2683 "Handshake failed - BIO_write");
2687 /* Initiate TLS handshake or continue the existing handshake */
2689 res = SSL_accept(conn->ssl);
2691 res = SSL_connect(conn->ssl);
2693 int err = SSL_get_error(conn->ssl, res);
2694 if (err == SSL_ERROR_WANT_READ)
2695 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
2697 else if (err == SSL_ERROR_WANT_WRITE)
2698 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
2701 tls_show_errors(MSG_INFO, __func__, "SSL_connect");
2706 /* Get the TLS handshake data to be sent to the server */
2707 res = BIO_ctrl_pending(conn->ssl_out);
2708 wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
2709 out_data = wpabuf_alloc(res);
2710 if (out_data == NULL) {
2711 wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
2712 "handshake output (%d bytes)", res);
2713 if (BIO_reset(conn->ssl_out) < 0) {
2714 tls_show_errors(MSG_INFO, __func__,
2715 "BIO_reset failed");
2719 res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data),
2722 tls_show_errors(MSG_INFO, __func__,
2723 "Handshake failed - BIO_read");
2724 if (BIO_reset(conn->ssl_out) < 0) {
2725 tls_show_errors(MSG_INFO, __func__,
2726 "BIO_reset failed");
2728 wpabuf_free(out_data);
2731 wpabuf_put(out_data, res);
2737 static struct wpabuf *
2738 openssl_get_appl_data(struct tls_connection *conn, size_t max_len)
2740 struct wpabuf *appl_data;
2743 appl_data = wpabuf_alloc(max_len + 100);
2744 if (appl_data == NULL)
2747 res = SSL_read(conn->ssl, wpabuf_mhead(appl_data),
2748 wpabuf_size(appl_data));
2750 int err = SSL_get_error(conn->ssl, res);
2751 if (err == SSL_ERROR_WANT_READ ||
2752 err == SSL_ERROR_WANT_WRITE) {
2753 wpa_printf(MSG_DEBUG, "SSL: No Application Data "
2756 tls_show_errors(MSG_INFO, __func__,
2757 "Failed to read possible "
2758 "Application Data");
2760 wpabuf_free(appl_data);
2764 wpabuf_put(appl_data, res);
2765 wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished "
2766 "message", appl_data);
2772 static struct wpabuf *
2773 openssl_connection_handshake(struct tls_connection *conn,
2774 const struct wpabuf *in_data,
2775 struct wpabuf **appl_data, int server)
2777 struct wpabuf *out_data;
2782 out_data = openssl_handshake(conn, in_data, server);
2783 if (out_data == NULL)
2785 if (conn->invalid_hb_used) {
2786 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
2787 wpabuf_free(out_data);
2791 if (SSL_is_init_finished(conn->ssl) && appl_data && in_data)
2792 *appl_data = openssl_get_appl_data(conn, wpabuf_len(in_data));
2794 if (conn->invalid_hb_used) {
2795 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
2797 wpabuf_free(*appl_data);
2800 wpabuf_free(out_data);
2809 tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
2810 const struct wpabuf *in_data,
2811 struct wpabuf **appl_data)
2813 return openssl_connection_handshake(conn, in_data, appl_data, 0);
2817 struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
2818 struct tls_connection *conn,
2819 const struct wpabuf *in_data,
2820 struct wpabuf **appl_data)
2822 return openssl_connection_handshake(conn, in_data, appl_data, 1);
2826 struct wpabuf * tls_connection_encrypt(void *tls_ctx,
2827 struct tls_connection *conn,
2828 const struct wpabuf *in_data)
2836 /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
2837 if ((res = BIO_reset(conn->ssl_in)) < 0 ||
2838 (res = BIO_reset(conn->ssl_out)) < 0) {
2839 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
2842 res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data));
2844 tls_show_errors(MSG_INFO, __func__,
2845 "Encryption failed - SSL_write");
2849 /* Read encrypted data to be sent to the server */
2850 buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
2853 res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf));
2855 tls_show_errors(MSG_INFO, __func__,
2856 "Encryption failed - BIO_read");
2860 wpabuf_put(buf, res);
2866 struct wpabuf * tls_connection_decrypt(void *tls_ctx,
2867 struct tls_connection *conn,
2868 const struct wpabuf *in_data)
2873 /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
2874 res = BIO_write(conn->ssl_in, wpabuf_head(in_data),
2875 wpabuf_len(in_data));
2877 tls_show_errors(MSG_INFO, __func__,
2878 "Decryption failed - BIO_write");
2881 if (BIO_reset(conn->ssl_out) < 0) {
2882 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
2886 /* Read decrypted data for further processing */
2888 * Even though we try to disable TLS compression, it is possible that
2889 * this cannot be done with all TLS libraries. Add extra buffer space
2890 * to handle the possibility of the decrypted data being longer than
2893 buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
2896 res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
2898 tls_show_errors(MSG_INFO, __func__,
2899 "Decryption failed - SSL_read");
2903 wpabuf_put(buf, res);
2905 if (conn->invalid_hb_used) {
2906 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
2915 int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
2917 #if OPENSSL_VERSION_NUMBER >= 0x10001000L
2918 return conn ? SSL_cache_hit(conn->ssl) : 0;
2920 return conn ? conn->ssl->hit : 0;
2925 int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
2928 char buf[100], *pos, *end;
2932 if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
2937 end = pos + sizeof(buf);
2940 while (*c != TLS_CIPHER_NONE) {
2944 case TLS_CIPHER_RC4_SHA:
2947 case TLS_CIPHER_AES128_SHA:
2948 suite = "AES128-SHA";
2950 case TLS_CIPHER_RSA_DHE_AES128_SHA:
2951 suite = "DHE-RSA-AES128-SHA";
2953 case TLS_CIPHER_ANON_DH_AES128_SHA:
2954 suite = "ADH-AES128-SHA";
2957 wpa_printf(MSG_DEBUG, "TLS: Unsupported "
2958 "cipher selection: %d", *c);
2961 ret = os_snprintf(pos, end - pos, ":%s", suite);
2962 if (os_snprintf_error(end - pos, ret))
2969 wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
2971 if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
2972 tls_show_errors(MSG_INFO, __func__,
2973 "Cipher suite configuration failed");
2981 int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
2982 char *buf, size_t buflen)
2985 if (conn == NULL || conn->ssl == NULL)
2988 name = SSL_get_cipher(conn->ssl);
2992 os_strlcpy(buf, name, buflen);
2997 int tls_connection_enable_workaround(void *ssl_ctx,
2998 struct tls_connection *conn)
3000 SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
3006 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3007 /* ClientHello TLS extensions require a patch to openssl, so this function is
3008 * commented out unless explicitly needed for EAP-FAST in order to be able to
3009 * build this file with unmodified openssl. */
3010 int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
3011 int ext_type, const u8 *data,
3014 if (conn == NULL || conn->ssl == NULL || ext_type != 35)
3017 if (SSL_set_session_ticket_ext(conn->ssl, (void *) data,
3023 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3026 int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
3030 return conn->failed;
3034 int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
3038 return conn->read_alerts;
3042 int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
3046 return conn->write_alerts;
3052 static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp)
3054 #ifndef CONFIG_NO_STDOUT_DEBUG
3060 if (wpa_debug_level > MSG_DEBUG)
3063 out = BIO_new(BIO_s_mem());
3067 OCSP_RESPONSE_print(out, rsp, 0);
3068 rlen = BIO_ctrl_pending(out);
3069 txt = os_malloc(rlen + 1);
3075 res = BIO_read(out, txt, rlen);
3078 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt);
3082 #endif /* CONFIG_NO_STDOUT_DEBUG */
3086 static void debug_print_cert(X509 *cert, const char *title)
3088 #ifndef CONFIG_NO_STDOUT_DEBUG
3094 if (wpa_debug_level > MSG_DEBUG)
3097 out = BIO_new(BIO_s_mem());
3101 X509_print(out, cert);
3102 rlen = BIO_ctrl_pending(out);
3103 txt = os_malloc(rlen + 1);
3109 res = BIO_read(out, txt, rlen);
3112 wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt);
3117 #endif /* CONFIG_NO_STDOUT_DEBUG */
3121 static int ocsp_resp_cb(SSL *s, void *arg)
3123 struct tls_connection *conn = arg;
3124 const unsigned char *p;
3125 int len, status, reason;
3127 OCSP_BASICRESP *basic;
3129 ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update;
3131 STACK_OF(X509) *certs = NULL;
3133 len = SSL_get_tlsext_status_ocsp_resp(s, &p);
3135 wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received");
3136 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
3139 wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len);
3141 rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
3143 wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response");
3147 ocsp_debug_print_resp(rsp);
3149 status = OCSP_response_status(rsp);
3150 if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
3151 wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)",
3152 status, OCSP_response_status_str(status));
3156 basic = OCSP_response_get1_basic(rsp);
3158 wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse");
3162 store = SSL_CTX_get_cert_store(conn->ssl_ctx);
3163 if (conn->peer_issuer) {
3164 debug_print_cert(conn->peer_issuer, "Add OCSP issuer");
3166 if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) {
3167 tls_show_errors(MSG_INFO, __func__,
3168 "OpenSSL: Could not add issuer to certificate store");
3170 certs = sk_X509_new_null();
3173 cert = X509_dup(conn->peer_issuer);
3174 if (cert && !sk_X509_push(certs, cert)) {
3177 "OpenSSL: Could not add issuer to OCSP responder trust store");
3179 sk_X509_free(certs);
3182 if (certs && conn->peer_issuer_issuer) {
3183 cert = X509_dup(conn->peer_issuer_issuer);
3184 if (cert && !sk_X509_push(certs, cert)) {
3187 "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
3194 status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER);
3195 sk_X509_pop_free(certs, X509_free);
3197 tls_show_errors(MSG_INFO, __func__,
3198 "OpenSSL: OCSP response failed verification");
3199 OCSP_BASICRESP_free(basic);
3200 OCSP_RESPONSE_free(rsp);
3204 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded");
3206 if (!conn->peer_cert) {
3207 wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check");
3208 OCSP_BASICRESP_free(basic);
3209 OCSP_RESPONSE_free(rsp);
3213 if (!conn->peer_issuer) {
3214 wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check");
3215 OCSP_BASICRESP_free(basic);
3216 OCSP_RESPONSE_free(rsp);
3220 id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer);
3222 wpa_printf(MSG_DEBUG, "OpenSSL: Could not create OCSP certificate identifier");
3223 OCSP_BASICRESP_free(basic);
3224 OCSP_RESPONSE_free(rsp);
3228 if (!OCSP_resp_find_status(basic, id, &status, &reason, &produced_at,
3229 &this_update, &next_update)) {
3230 wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s",
3231 (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" :
3232 " (OCSP not required)");
3233 OCSP_BASICRESP_free(basic);
3234 OCSP_RESPONSE_free(rsp);
3235 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
3238 if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) {
3239 tls_show_errors(MSG_INFO, __func__,
3240 "OpenSSL: OCSP status times invalid");
3241 OCSP_BASICRESP_free(basic);
3242 OCSP_RESPONSE_free(rsp);
3246 OCSP_BASICRESP_free(basic);
3247 OCSP_RESPONSE_free(rsp);
3249 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s",
3250 OCSP_cert_status_str(status));
3252 if (status == V_OCSP_CERTSTATUS_GOOD)
3254 if (status == V_OCSP_CERTSTATUS_REVOKED)
3256 if (conn->flags & TLS_CONN_REQUIRE_OCSP) {
3257 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required");
3260 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue");
3265 static int ocsp_status_cb(SSL *s, void *arg)
3271 if (tls_global->ocsp_stapling_response == NULL) {
3272 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured");
3273 return SSL_TLSEXT_ERR_OK;
3276 resp = os_readfile(tls_global->ocsp_stapling_response, &len);
3278 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file");
3279 /* TODO: Build OCSPResponse with responseStatus = internalError
3281 return SSL_TLSEXT_ERR_OK;
3283 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response");
3284 tmp = OPENSSL_malloc(len);
3287 return SSL_TLSEXT_ERR_ALERT_FATAL;
3290 os_memcpy(tmp, resp, len);
3292 SSL_set_tlsext_status_ocsp_resp(s, tmp, len);
3294 return SSL_TLSEXT_ERR_OK;
3297 #endif /* HAVE_OCSP */
3300 int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
3301 const struct tls_connection_params *params)
3306 const char *key_id = params->key_id;
3307 const char *cert_id = params->cert_id;
3308 const char *ca_cert_id = params->ca_cert_id;
3309 const char *engine_id = params->engine ? params->engine_id : NULL;
3315 * If the engine isn't explicitly configured, and any of the
3316 * cert/key fields are actually PKCS#11 URIs, then automatically
3317 * use the PKCS#11 ENGINE.
3319 if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0)
3322 if (!key_id && params->private_key && can_pkcs11 &&
3323 os_strncmp(params->private_key, "pkcs11:", 7) == 0) {
3325 key_id = params->private_key;
3328 if (!cert_id && params->client_cert && can_pkcs11 &&
3329 os_strncmp(params->client_cert, "pkcs11:", 7) == 0) {
3331 cert_id = params->client_cert;
3334 if (!ca_cert_id && params->ca_cert && can_pkcs11 &&
3335 os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) {
3337 ca_cert_id = params->ca_cert;
3340 /* If we need to automatically enable the PKCS#11 ENGINE, do so. */
3341 if (can_pkcs11 == 2 && !engine_id)
3342 engine_id = "pkcs11";
3344 if (params->flags & TLS_CONN_EAP_FAST) {
3345 wpa_printf(MSG_DEBUG,
3346 "OpenSSL: Use TLSv1_method() for EAP-FAST");
3347 if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) {
3348 tls_show_errors(MSG_INFO, __func__,
3349 "Failed to set TLSv1_method() for EAP-FAST");
3354 while ((err = ERR_get_error())) {
3355 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
3356 __func__, ERR_error_string(err, NULL));
3360 wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
3361 ret = tls_engine_init(conn, engine_id, params->pin,
3362 key_id, cert_id, ca_cert_id);
3366 if (tls_connection_set_subject_match(conn,
3367 params->subject_match,
3368 params->altsubject_match,
3369 params->suffix_match,
3370 params->domain_match))
3373 if (engine_id && ca_cert_id) {
3374 if (tls_connection_engine_ca_cert(tls_ctx, conn,
3376 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
3377 } else if (tls_connection_ca_cert(tls_ctx, conn, params->ca_cert,
3378 params->ca_cert_blob,
3379 params->ca_cert_blob_len,
3383 if (engine_id && cert_id) {
3384 if (tls_connection_engine_client_cert(conn, cert_id))
3385 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
3386 } else if (tls_connection_client_cert(conn, params->client_cert,
3387 params->client_cert_blob,
3388 params->client_cert_blob_len))
3391 if (engine_id && key_id) {
3392 wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
3393 if (tls_connection_engine_private_key(conn))
3394 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
3395 } else if (tls_connection_private_key(tls_ctx, conn,
3396 params->private_key,
3397 params->private_key_passwd,
3398 params->private_key_blob,
3399 params->private_key_blob_len)) {
3400 wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
3401 params->private_key);
3405 if (tls_connection_dh(conn, params->dh_file)) {
3406 wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
3411 if (params->openssl_ciphers &&
3412 SSL_set_cipher_list(conn->ssl, params->openssl_ciphers) != 1) {
3413 wpa_printf(MSG_INFO,
3414 "OpenSSL: Failed to set cipher string '%s'",
3415 params->openssl_ciphers);
3419 #ifdef SSL_OP_NO_TICKET
3420 if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
3421 SSL_set_options(conn->ssl, SSL_OP_NO_TICKET);
3422 #ifdef SSL_clear_options
3424 SSL_clear_options(conn->ssl, SSL_OP_NO_TICKET);
3425 #endif /* SSL_clear_options */
3426 #endif /* SSL_OP_NO_TICKET */
3428 #ifdef SSL_OP_NO_TLSv1_1
3429 if (params->flags & TLS_CONN_DISABLE_TLSv1_1)
3430 SSL_set_options(conn->ssl, SSL_OP_NO_TLSv1_1);
3432 SSL_clear_options(conn->ssl, SSL_OP_NO_TLSv1_1);
3433 #endif /* SSL_OP_NO_TLSv1_1 */
3434 #ifdef SSL_OP_NO_TLSv1_2
3435 if (params->flags & TLS_CONN_DISABLE_TLSv1_2)
3436 SSL_set_options(conn->ssl, SSL_OP_NO_TLSv1_2);
3438 SSL_clear_options(conn->ssl, SSL_OP_NO_TLSv1_2);
3439 #endif /* SSL_OP_NO_TLSv1_2 */
3442 if (params->flags & TLS_CONN_REQUEST_OCSP) {
3443 SSL_CTX *ssl_ctx = tls_ctx;
3444 SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp);
3445 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb);
3446 SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn);
3448 #endif /* HAVE_OCSP */
3450 conn->flags = params->flags;
3452 tls_get_errors(tls_ctx);
3458 int tls_global_set_params(void *tls_ctx,
3459 const struct tls_connection_params *params)
3461 SSL_CTX *ssl_ctx = tls_ctx;
3464 while ((err = ERR_get_error())) {
3465 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
3466 __func__, ERR_error_string(err, NULL));
3469 if (tls_global_ca_cert(ssl_ctx, params->ca_cert))
3472 if (tls_global_client_cert(ssl_ctx, params->client_cert))
3475 if (tls_global_private_key(ssl_ctx, params->private_key,
3476 params->private_key_passwd))
3479 if (tls_global_dh(ssl_ctx, params->dh_file)) {
3480 wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
3485 if (params->openssl_ciphers &&
3486 SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) {
3487 wpa_printf(MSG_INFO,
3488 "OpenSSL: Failed to set cipher string '%s'",
3489 params->openssl_ciphers);
3493 #ifdef SSL_OP_NO_TICKET
3494 if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
3495 SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET);
3496 #ifdef SSL_CTX_clear_options
3498 SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET);
3499 #endif /* SSL_clear_options */
3500 #endif /* SSL_OP_NO_TICKET */
3503 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb);
3504 SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx);
3505 os_free(tls_global->ocsp_stapling_response);
3506 if (params->ocsp_stapling_response)
3507 tls_global->ocsp_stapling_response =
3508 os_strdup(params->ocsp_stapling_response);
3510 tls_global->ocsp_stapling_response = NULL;
3511 #endif /* HAVE_OCSP */
3517 int tls_connection_get_keyblock_size(void *tls_ctx,
3518 struct tls_connection *conn)
3520 const EVP_CIPHER *c;
3524 if (conn == NULL || conn->ssl == NULL ||
3525 conn->ssl->enc_read_ctx == NULL ||
3526 conn->ssl->enc_read_ctx->cipher == NULL ||
3527 conn->ssl->read_hash == NULL)
3530 c = conn->ssl->enc_read_ctx->cipher;
3531 #if OPENSSL_VERSION_NUMBER >= 0x00909000L
3532 h = EVP_MD_CTX_md(conn->ssl->read_hash);
3534 h = conn->ssl->read_hash;
3537 md_size = EVP_MD_size(h);
3538 #if OPENSSL_VERSION_NUMBER >= 0x10000000L
3539 else if (conn->ssl->s3)
3540 md_size = conn->ssl->s3->tmp.new_mac_secret_size;
3545 wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d "
3546 "IV_len=%d", EVP_CIPHER_key_length(c), md_size,
3547 EVP_CIPHER_iv_length(c));
3548 return 2 * (EVP_CIPHER_key_length(c) +
3550 EVP_CIPHER_iv_length(c));
3554 unsigned int tls_capabilities(void *tls_ctx)
3560 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3561 /* Pre-shared secred requires a patch to openssl, so this function is
3562 * commented out unless explicitly needed for EAP-FAST in order to be able to
3563 * build this file with unmodified openssl. */
3565 #ifdef OPENSSL_IS_BORINGSSL
3566 static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
3567 STACK_OF(SSL_CIPHER) *peer_ciphers,
3568 const SSL_CIPHER **cipher, void *arg)
3569 #else /* OPENSSL_IS_BORINGSSL */
3570 static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
3571 STACK_OF(SSL_CIPHER) *peer_ciphers,
3572 SSL_CIPHER **cipher, void *arg)
3573 #endif /* OPENSSL_IS_BORINGSSL */
3575 struct tls_connection *conn = arg;
3578 if (conn == NULL || conn->session_ticket_cb == NULL)
3581 ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
3582 conn->session_ticket,
3583 conn->session_ticket_len,
3584 s->s3->client_random,
3585 s->s3->server_random, secret);
3586 os_free(conn->session_ticket);
3587 conn->session_ticket = NULL;
3592 *secret_len = SSL_MAX_MASTER_KEY_LENGTH;
3597 static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data,
3600 struct tls_connection *conn = arg;
3602 if (conn == NULL || conn->session_ticket_cb == NULL)
3605 wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len);
3607 os_free(conn->session_ticket);
3608 conn->session_ticket = NULL;
3610 wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
3611 "extension", data, len);
3613 conn->session_ticket = os_malloc(len);
3614 if (conn->session_ticket == NULL)
3617 os_memcpy(conn->session_ticket, data, len);
3618 conn->session_ticket_len = len;
3622 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3625 int tls_connection_set_session_ticket_cb(void *tls_ctx,
3626 struct tls_connection *conn,
3627 tls_session_ticket_cb cb,
3630 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3631 conn->session_ticket_cb = cb;
3632 conn->session_ticket_cb_ctx = ctx;
3635 if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
3638 SSL_set_session_ticket_ext_cb(conn->ssl,
3639 tls_session_ticket_ext_cb, conn);
3641 if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
3643 SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL);
3647 #else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3649 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3653 int tls_get_library_version(char *buf, size_t buf_len)
3655 return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
3656 OPENSSL_VERSION_TEXT,
3657 SSLeay_version(SSLEAY_VERSION));