2 * SSL/TLS interface functions for OpenSSL
3 * Copyright (c) 2004-2015, 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 */
26 #ifndef OPENSSL_NO_DSA
27 #include <openssl/dsa.h>
30 #include <openssl/dh.h>
33 #ifdef OPENSSL_IS_BORINGSSL
34 #include <openssl/asn1.h>
35 #include <openssl/asn1t.h>
36 #endif /* OPENSSL_IS_BORINGSSL */
44 #if OPENSSL_VERSION_NUMBER < 0x10000000L
45 /* ERR_remove_thread_state replaces ERR_remove_state and the latter is
46 * deprecated. However, OpenSSL 0.9.8 doesn't include
47 * ERR_remove_thread_state. */
48 #define ERR_remove_thread_state(tid) ERR_remove_state(0)
51 #if defined(OPENSSL_IS_BORINGSSL)
52 /* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */
53 typedef size_t stack_index_t;
55 typedef int stack_index_t;
58 #ifdef SSL_set_tlsext_status_type
59 #ifndef OPENSSL_NO_TLSEXT
61 #include <openssl/ocsp.h>
62 #endif /* OPENSSL_NO_TLSEXT */
63 #endif /* SSL_set_tlsext_status_type */
66 #include <openssl/pem.h>
67 #include <keystore/keystore_get.h>
69 static BIO * BIO_from_keystore(const char *key)
72 uint8_t *value = NULL;
73 int length = keystore_get(key, strlen(key), &value);
74 if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL)
75 BIO_write(bio, value, length);
81 static int tls_openssl_ref_count = 0;
82 static int tls_ex_idx_session = -1;
85 void (*event_cb)(void *ctx, enum tls_event ev,
86 union tls_event_data *data);
89 char *ocsp_stapling_response;
92 static struct tls_context *tls_global = NULL;
97 unsigned int tls_session_lifetime;
100 struct tls_connection {
101 struct tls_context *context;
104 BIO *ssl_in, *ssl_out;
105 #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
106 ENGINE *engine; /* functional reference to the engine */
107 EVP_PKEY *private_key; /* the private key if using engine */
108 #endif /* OPENSSL_NO_ENGINE */
109 char *subject_match, *altsubject_match, *suffix_match, *domain_match;
110 int read_alerts, write_alerts, failed;
112 tls_session_ticket_cb session_ticket_cb;
113 void *session_ticket_cb_ctx;
115 /* SessionTicket received from OpenSSL hello_extension_cb (server) */
117 size_t session_ticket_len;
119 unsigned int ca_cert_verify:1;
120 unsigned int cert_probe:1;
121 unsigned int server_cert_only:1;
122 unsigned int invalid_hb_used:1;
123 unsigned int success_data:1;
125 u8 srv_cert_hash[32];
131 X509 *peer_issuer_issuer;
133 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
134 unsigned char client_random[SSL3_RANDOM_SIZE];
135 unsigned char server_random[SSL3_RANDOM_SIZE];
140 static struct tls_context * tls_context_new(const struct tls_config *conf)
142 struct tls_context *context = os_zalloc(sizeof(*context));
146 context->event_cb = conf->event_cb;
147 context->cb_ctx = conf->cb_ctx;
148 context->cert_in_cb = conf->cert_in_cb;
154 #ifdef CONFIG_NO_STDOUT_DEBUG
156 static void _tls_show_errors(void)
160 while ((err = ERR_get_error())) {
161 /* Just ignore the errors, since stdout is disabled */
164 #define tls_show_errors(l, f, t) _tls_show_errors()
166 #else /* CONFIG_NO_STDOUT_DEBUG */
168 static void tls_show_errors(int level, const char *func, const char *txt)
172 wpa_printf(level, "OpenSSL: %s - %s %s",
173 func, txt, ERR_error_string(ERR_get_error(), NULL));
175 while ((err = ERR_get_error())) {
176 wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
177 ERR_error_string(err, NULL));
181 #endif /* CONFIG_NO_STDOUT_DEBUG */
184 #ifdef CONFIG_NATIVE_WINDOWS
186 /* Windows CryptoAPI and access to certificate stores */
187 #include <wincrypt.h>
189 #ifdef __MINGW32_VERSION
191 * MinGW does not yet include all the needed definitions for CryptoAPI, so
192 * define here whatever extra is needed.
194 #define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
195 #define CERT_STORE_READONLY_FLAG 0x00008000
196 #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
198 #endif /* __MINGW32_VERSION */
201 struct cryptoapi_rsa_data {
202 const CERT_CONTEXT *cert;
203 HCRYPTPROV crypt_prov;
205 BOOL free_crypt_prov;
209 static void cryptoapi_error(const char *msg)
211 wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
212 msg, (unsigned int) GetLastError());
216 static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
217 unsigned char *to, RSA *rsa, int padding)
219 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
224 static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
225 unsigned char *to, RSA *rsa, int padding)
227 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
232 static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
233 unsigned char *to, RSA *rsa, int padding)
235 struct cryptoapi_rsa_data *priv =
236 (struct cryptoapi_rsa_data *) rsa->meth->app_data;
238 DWORD hash_size, len, i;
239 unsigned char *buf = NULL;
243 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
244 ERR_R_PASSED_NULL_PARAMETER);
248 if (padding != RSA_PKCS1_PADDING) {
249 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
250 RSA_R_UNKNOWN_PADDING_TYPE);
254 if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
255 wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
257 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
258 RSA_R_INVALID_MESSAGE_LENGTH);
262 if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
264 cryptoapi_error("CryptCreateHash failed");
268 len = sizeof(hash_size);
269 if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
271 cryptoapi_error("CryptGetHashParam failed");
275 if ((int) hash_size != flen) {
276 wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
277 (unsigned) hash_size, flen);
278 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
279 RSA_R_INVALID_MESSAGE_LENGTH);
282 if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
283 cryptoapi_error("CryptSetHashParam failed");
288 buf = os_malloc(len);
290 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
294 if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
295 cryptoapi_error("CryptSignHash failed");
299 for (i = 0; i < len; i++)
300 to[i] = buf[len - i - 1];
305 CryptDestroyHash(hash);
311 static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
312 unsigned char *to, RSA *rsa, int padding)
314 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
319 static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
323 if (priv->crypt_prov && priv->free_crypt_prov)
324 CryptReleaseContext(priv->crypt_prov, 0);
326 CertFreeCertificateContext(priv->cert);
331 static int cryptoapi_finish(RSA *rsa)
333 cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
334 os_free((void *) rsa->meth);
340 static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
343 const CERT_CONTEXT *ret = NULL;
345 cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
346 store | CERT_STORE_OPEN_EXISTING_FLAG |
347 CERT_STORE_READONLY_FLAG, L"MY");
349 cryptoapi_error("Failed to open 'My system store'");
353 if (strncmp(name, "cert://", 7) == 0) {
354 unsigned short wbuf[255];
355 MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
356 ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
358 0, CERT_FIND_SUBJECT_STR,
360 } else if (strncmp(name, "hash://", 7) == 0) {
361 CRYPT_HASH_BLOB blob;
363 const char *hash = name + 7;
366 len = os_strlen(hash) / 2;
367 buf = os_malloc(len);
368 if (buf && hexstr2bin(hash, buf, len) == 0) {
371 ret = CertFindCertificateInStore(cs,
380 CertCloseStore(cs, 0);
386 static int tls_cryptoapi_cert(SSL *ssl, const char *name)
389 RSA *rsa = NULL, *pub_rsa;
390 struct cryptoapi_rsa_data *priv;
391 RSA_METHOD *rsa_meth;
394 (strncmp(name, "cert://", 7) != 0 &&
395 strncmp(name, "hash://", 7) != 0))
398 priv = os_zalloc(sizeof(*priv));
399 rsa_meth = os_zalloc(sizeof(*rsa_meth));
400 if (priv == NULL || rsa_meth == NULL) {
401 wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
402 "for CryptoAPI RSA method");
408 priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
409 if (priv->cert == NULL) {
410 priv->cert = cryptoapi_find_cert(
411 name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
413 if (priv->cert == NULL) {
414 wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
419 cert = d2i_X509(NULL,
420 (const unsigned char **) &priv->cert->pbCertEncoded,
421 priv->cert->cbCertEncoded);
423 wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
428 if (!CryptAcquireCertificatePrivateKey(priv->cert,
429 CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
430 NULL, &priv->crypt_prov,
432 &priv->free_crypt_prov)) {
433 cryptoapi_error("Failed to acquire a private key for the "
438 rsa_meth->name = "Microsoft CryptoAPI RSA Method";
439 rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
440 rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
441 rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
442 rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
443 rsa_meth->finish = cryptoapi_finish;
444 rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
445 rsa_meth->app_data = (char *) priv;
449 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
450 ERR_R_MALLOC_FAILURE);
454 if (!SSL_use_certificate(ssl, cert)) {
459 pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
463 rsa->n = BN_dup(pub_rsa->n);
464 rsa->e = BN_dup(pub_rsa->e);
465 if (!RSA_set_method(rsa, rsa_meth))
468 if (!SSL_use_RSAPrivateKey(ssl, rsa))
481 cryptoapi_free_data(priv);
487 static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
490 PCCERT_CONTEXT ctx = NULL;
498 if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
503 wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
506 wsprintf(wstore, L"%S", store);
507 cs = CertOpenSystemStore(0, wstore);
510 cs = CertOpenSystemStore(0, store);
513 wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
514 "'%s': error=%d", __func__, store,
515 (int) GetLastError());
519 while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
520 cert = d2i_X509(NULL,
521 (const unsigned char **) &ctx->pbCertEncoded,
524 wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
525 "X509 DER encoding for CA cert");
529 X509_NAME_oneline(X509_get_subject_name(cert), buf,
531 wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
532 "system certificate store: subject='%s'", buf);
534 if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
535 tls_show_errors(MSG_WARNING, __func__,
536 "Failed to add ca_cert to OpenSSL "
537 "certificate store");
543 if (!CertCloseStore(cs, 0)) {
544 wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
545 "'%s': error=%d", __func__, name + 13,
546 (int) GetLastError());
553 #else /* CONFIG_NATIVE_WINDOWS */
555 static int tls_cryptoapi_cert(SSL *ssl, const char *name)
560 #endif /* CONFIG_NATIVE_WINDOWS */
563 static void ssl_info_cb(const SSL *ssl, int where, int ret)
568 wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
569 w = where & ~SSL_ST_MASK;
570 if (w & SSL_ST_CONNECT)
572 else if (w & SSL_ST_ACCEPT)
577 if (where & SSL_CB_LOOP) {
578 wpa_printf(MSG_DEBUG, "SSL: %s:%s",
579 str, SSL_state_string_long(ssl));
580 } else if (where & SSL_CB_ALERT) {
581 struct tls_connection *conn = SSL_get_app_data((SSL *) ssl);
582 wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
583 where & SSL_CB_READ ?
584 "read (remote end reported an error)" :
585 "write (local SSL3 detected an error)",
586 SSL_alert_type_string_long(ret),
587 SSL_alert_desc_string_long(ret));
588 if ((ret >> 8) == SSL3_AL_FATAL) {
589 if (where & SSL_CB_READ)
592 conn->write_alerts++;
594 if (conn->context->event_cb != NULL) {
595 union tls_event_data ev;
596 struct tls_context *context = conn->context;
597 os_memset(&ev, 0, sizeof(ev));
598 ev.alert.is_local = !(where & SSL_CB_READ);
599 ev.alert.type = SSL_alert_type_string_long(ret);
600 ev.alert.description = SSL_alert_desc_string_long(ret);
601 context->event_cb(context->cb_ctx, TLS_ALERT, &ev);
603 } else if (where & SSL_CB_EXIT && ret <= 0) {
604 wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
605 str, ret == 0 ? "failed" : "error",
606 SSL_state_string_long(ssl));
611 #ifndef OPENSSL_NO_ENGINE
613 * tls_engine_load_dynamic_generic - load any openssl engine
614 * @pre: an array of commands and values that load an engine initialized
615 * in the engine specific function
616 * @post: an array of commands and values that initialize an already loaded
617 * engine (or %NULL if not required)
618 * @id: the engine id of the engine to load (only required if post is not %NULL
620 * This function is a generic function that loads any openssl engine.
622 * Returns: 0 on success, -1 on failure
624 static int tls_engine_load_dynamic_generic(const char *pre[],
625 const char *post[], const char *id)
628 const char *dynamic_id = "dynamic";
630 engine = ENGINE_by_id(id);
633 wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
639 engine = ENGINE_by_id(dynamic_id);
640 if (engine == NULL) {
641 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
643 ERR_error_string(ERR_get_error(), NULL));
647 /* Perform the pre commands. This will load the engine. */
648 while (pre && pre[0]) {
649 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
650 if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
651 wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
652 "%s %s [%s]", pre[0], pre[1],
653 ERR_error_string(ERR_get_error(), NULL));
661 * Free the reference to the "dynamic" engine. The loaded engine can
662 * now be looked up using ENGINE_by_id().
666 engine = ENGINE_by_id(id);
667 if (engine == NULL) {
668 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
669 id, ERR_error_string(ERR_get_error(), NULL));
673 while (post && post[0]) {
674 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
675 if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
676 wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
677 " %s %s [%s]", post[0], post[1],
678 ERR_error_string(ERR_get_error(), NULL));
679 ENGINE_remove(engine);
692 * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
693 * @pkcs11_so_path: pksc11_so_path from the configuration
694 * @pcks11_module_path: pkcs11_module_path from the configuration
696 static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
697 const char *pkcs11_module_path)
699 char *engine_id = "pkcs11";
700 const char *pre_cmd[] = {
701 "SO_PATH", NULL /* pkcs11_so_path */,
702 "ID", NULL /* engine_id */,
704 /* "NO_VCHECK", "1", */
708 const char *post_cmd[] = {
709 "MODULE_PATH", NULL /* pkcs11_module_path */,
716 pre_cmd[1] = pkcs11_so_path;
717 pre_cmd[3] = engine_id;
718 if (pkcs11_module_path)
719 post_cmd[1] = pkcs11_module_path;
723 wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
726 return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
731 * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
732 * @opensc_so_path: opensc_so_path from the configuration
734 static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
736 char *engine_id = "opensc";
737 const char *pre_cmd[] = {
738 "SO_PATH", NULL /* opensc_so_path */,
739 "ID", NULL /* engine_id */,
748 pre_cmd[1] = opensc_so_path;
749 pre_cmd[3] = engine_id;
751 wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
754 return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
756 #endif /* OPENSSL_NO_ENGINE */
759 static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess)
763 if (tls_ex_idx_session < 0)
765 buf = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
768 wpa_printf(MSG_DEBUG,
769 "OpenSSL: Free application session data %p (sess %p)",
773 SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL);
777 void * tls_init(const struct tls_config *conf)
779 struct tls_data *data;
781 struct tls_context *context;
784 if (tls_openssl_ref_count == 0) {
785 tls_global = context = tls_context_new(conf);
790 if (conf && conf->fips_mode) {
791 static int fips_enabled = 0;
793 if (!fips_enabled && !FIPS_mode_set(1)) {
794 wpa_printf(MSG_ERROR, "Failed to enable FIPS "
796 ERR_load_crypto_strings();
797 ERR_print_errors_fp(stderr);
802 wpa_printf(MSG_INFO, "Running in FIPS mode");
806 #else /* OPENSSL_FIPS */
807 if (conf && conf->fips_mode) {
808 wpa_printf(MSG_ERROR, "FIPS mode requested, but not "
814 #endif /* OPENSSL_FIPS */
815 #endif /* CONFIG_FIPS */
816 SSL_load_error_strings();
818 #ifndef OPENSSL_NO_SHA256
819 EVP_add_digest(EVP_sha256());
820 #endif /* OPENSSL_NO_SHA256 */
821 /* TODO: if /dev/urandom is available, PRNG is seeded
822 * automatically. If this is not the case, random data should
826 #ifndef OPENSSL_NO_RC2
828 * 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
829 * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
830 * versions, but it looks like OpenSSL 1.0.0 does not do that
833 EVP_add_cipher(EVP_rc2_40_cbc());
834 #endif /* OPENSSL_NO_RC2 */
836 #endif /* PKCS12_FUNCS */
838 context = tls_context_new(conf);
842 tls_openssl_ref_count++;
844 data = os_zalloc(sizeof(*data));
846 ssl = SSL_CTX_new(SSLv23_method());
850 tls_openssl_ref_count--;
851 if (context != tls_global)
853 if (tls_openssl_ref_count == 0) {
861 data->tls_session_lifetime = conf->tls_session_lifetime;
863 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2);
864 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3);
866 SSL_CTX_set_info_callback(ssl, ssl_info_cb);
867 SSL_CTX_set_app_data(ssl, context);
868 if (data->tls_session_lifetime > 0) {
869 SSL_CTX_set_quiet_shutdown(ssl, 1);
871 * Set default context here. In practice, this will be replaced
872 * by the per-EAP method context in tls_connection_set_verify().
874 SSL_CTX_set_session_id_context(ssl, (u8 *) "hostapd", 7);
875 SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_SERVER);
876 SSL_CTX_set_timeout(ssl, data->tls_session_lifetime);
877 SSL_CTX_sess_set_remove_cb(ssl, remove_session_cb);
879 SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_OFF);
882 if (tls_ex_idx_session < 0) {
883 tls_ex_idx_session = SSL_SESSION_get_ex_new_index(
884 0, NULL, NULL, NULL, NULL);
885 if (tls_ex_idx_session < 0) {
891 #ifndef OPENSSL_NO_ENGINE
892 wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine");
893 ERR_load_ENGINE_strings();
894 ENGINE_load_dynamic();
897 (conf->opensc_engine_path || conf->pkcs11_engine_path ||
898 conf->pkcs11_module_path)) {
899 if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
900 tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
901 conf->pkcs11_module_path)) {
906 #endif /* OPENSSL_NO_ENGINE */
908 if (conf && conf->openssl_ciphers)
909 ciphers = conf->openssl_ciphers;
911 ciphers = "DEFAULT:!EXP:!LOW";
912 if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) {
913 wpa_printf(MSG_ERROR,
914 "OpenSSL: Failed to set cipher string '%s'",
924 void tls_deinit(void *ssl_ctx)
926 struct tls_data *data = ssl_ctx;
927 SSL_CTX *ssl = data->ssl;
928 struct tls_context *context = SSL_CTX_get_app_data(ssl);
929 if (context != tls_global)
931 if (data->tls_session_lifetime > 0)
932 SSL_CTX_flush_sessions(ssl, 0);
935 tls_openssl_ref_count--;
936 if (tls_openssl_ref_count == 0) {
937 #ifndef OPENSSL_NO_ENGINE
939 #endif /* OPENSSL_NO_ENGINE */
940 CRYPTO_cleanup_all_ex_data();
941 ERR_remove_thread_state(NULL);
944 os_free(tls_global->ocsp_stapling_response);
945 tls_global->ocsp_stapling_response = NULL;
954 #ifndef OPENSSL_NO_ENGINE
956 /* Cryptoki return values */
957 #define CKR_PIN_INCORRECT 0x000000a0
958 #define CKR_PIN_INVALID 0x000000a1
959 #define CKR_PIN_LEN_RANGE 0x000000a2
962 #define ERR_LIB_PKCS11 ERR_LIB_USER
964 static int tls_is_pin_error(unsigned int err)
966 return ERR_GET_LIB(err) == ERR_LIB_PKCS11 &&
967 (ERR_GET_REASON(err) == CKR_PIN_INCORRECT ||
968 ERR_GET_REASON(err) == CKR_PIN_INVALID ||
969 ERR_GET_REASON(err) == CKR_PIN_LEN_RANGE);
972 #endif /* OPENSSL_NO_ENGINE */
976 /* EVP_PKEY_from_keystore comes from system/security/keystore-engine. */
977 EVP_PKEY * EVP_PKEY_from_keystore(const char *key_id);
980 static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
981 const char *pin, const char *key_id,
982 const char *cert_id, const char *ca_cert_id)
984 #if defined(ANDROID) && defined(OPENSSL_IS_BORINGSSL)
985 #if !defined(OPENSSL_NO_ENGINE)
986 #error "This code depends on OPENSSL_NO_ENGINE being defined by BoringSSL."
989 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
991 conn->private_key = EVP_PKEY_from_keystore(key_id);
992 if (!conn->private_key) {
993 wpa_printf(MSG_ERROR,
994 "ENGINE: cannot load private key with id '%s' [%s]",
996 ERR_error_string(ERR_get_error(), NULL));
997 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
999 #endif /* ANDROID && OPENSSL_IS_BORINGSSL */
1001 #ifndef OPENSSL_NO_ENGINE
1003 if (engine_id == NULL) {
1004 wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
1010 ENGINE_load_dynamic();
1012 conn->engine = ENGINE_by_id(engine_id);
1013 if (!conn->engine) {
1014 wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
1015 engine_id, ERR_error_string(ERR_get_error(), NULL));
1018 if (ENGINE_init(conn->engine) != 1) {
1019 wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
1020 "(engine: %s) [%s]", engine_id,
1021 ERR_error_string(ERR_get_error(), NULL));
1024 wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
1027 if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
1028 wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
1029 ERR_error_string(ERR_get_error(), NULL));
1035 * Ensure that the ENGINE does not attempt to use the OpenSSL
1036 * UI system to obtain a PIN, if we didn't provide one.
1039 const void *password;
1040 const char *prompt_info;
1041 } key_cb = { "", NULL };
1043 /* load private key first in-case PIN is required for cert */
1044 conn->private_key = ENGINE_load_private_key(conn->engine,
1047 if (!conn->private_key) {
1048 unsigned long err = ERR_get_error();
1050 wpa_printf(MSG_ERROR,
1051 "ENGINE: cannot load private key with id '%s' [%s]",
1053 ERR_error_string(err, NULL));
1054 if (tls_is_pin_error(err))
1055 ret = TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
1057 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1062 /* handle a certificate and/or CA certificate */
1063 if (cert_id || ca_cert_id) {
1064 const char *cmd_name = "LOAD_CERT_CTRL";
1066 /* test if the engine supports a LOAD_CERT_CTRL */
1067 if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME,
1068 0, (void *)cmd_name, NULL)) {
1069 wpa_printf(MSG_ERROR, "ENGINE: engine does not support"
1070 " loading certificates");
1071 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1080 ENGINE_free(conn->engine);
1081 conn->engine = NULL;
1084 if (conn->private_key) {
1085 EVP_PKEY_free(conn->private_key);
1086 conn->private_key = NULL;
1090 #else /* OPENSSL_NO_ENGINE */
1092 #endif /* OPENSSL_NO_ENGINE */
1096 static void tls_engine_deinit(struct tls_connection *conn)
1098 #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
1099 wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
1100 if (conn->private_key) {
1101 EVP_PKEY_free(conn->private_key);
1102 conn->private_key = NULL;
1105 #if !defined(OPENSSL_IS_BORINGSSL)
1106 ENGINE_finish(conn->engine);
1107 #endif /* !OPENSSL_IS_BORINGSSL */
1108 conn->engine = NULL;
1110 #endif /* ANDROID || !OPENSSL_NO_ENGINE */
1114 int tls_get_errors(void *ssl_ctx)
1119 while ((err = ERR_get_error())) {
1120 wpa_printf(MSG_INFO, "TLS - SSL error: %s",
1121 ERR_error_string(err, NULL));
1129 static const char * openssl_content_type(int content_type)
1131 switch (content_type) {
1133 return "change cipher spec";
1139 return "application data";
1143 return "TLS header info"; /* pseudo content type */
1150 static const char * openssl_handshake_type(int content_type, const u8 *buf,
1153 if (content_type != 22 || !buf || len == 0)
1157 return "hello request";
1159 return "client hello";
1161 return "server hello";
1163 return "new session ticket";
1165 return "certificate";
1167 return "server key exchange";
1169 return "certificate request";
1171 return "server hello done";
1173 return "certificate verify";
1175 return "client key exchange";
1179 return "certificate url";
1181 return "certificate status";
1188 static void tls_msg_cb(int write_p, int version, int content_type,
1189 const void *buf, size_t len, SSL *ssl, void *arg)
1191 struct tls_connection *conn = arg;
1192 const u8 *pos = buf;
1195 wpa_printf(MSG_DEBUG,
1196 "OpenSSL: session ver=0x%x content_type=%d",
1197 version, content_type);
1198 wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Data", buf, len);
1202 wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d (%s/%s)",
1203 write_p ? "TX" : "RX", version, content_type,
1204 openssl_content_type(content_type),
1205 openssl_handshake_type(content_type, buf, len));
1206 wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len);
1207 if (content_type == 24 && len >= 3 && pos[0] == 1) {
1208 size_t payload_len = WPA_GET_BE16(pos + 1);
1209 if (payload_len + 3 > len) {
1210 wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected");
1211 conn->invalid_hb_used = 1;
1217 struct tls_connection * tls_connection_init(void *ssl_ctx)
1219 struct tls_data *data = ssl_ctx;
1220 SSL_CTX *ssl = data->ssl;
1221 struct tls_connection *conn;
1223 struct tls_context *context = SSL_CTX_get_app_data(ssl);
1225 conn = os_zalloc(sizeof(*conn));
1228 conn->ssl_ctx = ssl;
1229 conn->ssl = SSL_new(ssl);
1230 if (conn->ssl == NULL) {
1231 tls_show_errors(MSG_INFO, __func__,
1232 "Failed to initialize new SSL connection");
1237 conn->context = context;
1238 SSL_set_app_data(conn->ssl, conn);
1239 SSL_set_msg_callback(conn->ssl, tls_msg_cb);
1240 SSL_set_msg_callback_arg(conn->ssl, conn);
1241 options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
1242 SSL_OP_SINGLE_DH_USE;
1243 #ifdef SSL_OP_NO_COMPRESSION
1244 options |= SSL_OP_NO_COMPRESSION;
1245 #endif /* SSL_OP_NO_COMPRESSION */
1246 SSL_set_options(conn->ssl, options);
1248 conn->ssl_in = BIO_new(BIO_s_mem());
1249 if (!conn->ssl_in) {
1250 tls_show_errors(MSG_INFO, __func__,
1251 "Failed to create a new BIO for ssl_in");
1252 SSL_free(conn->ssl);
1257 conn->ssl_out = BIO_new(BIO_s_mem());
1258 if (!conn->ssl_out) {
1259 tls_show_errors(MSG_INFO, __func__,
1260 "Failed to create a new BIO for ssl_out");
1261 SSL_free(conn->ssl);
1262 BIO_free(conn->ssl_in);
1267 SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
1273 void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
1277 if (conn->success_data) {
1279 * Make sure ssl_clear_bad_session() does not remove this
1282 SSL_set_quiet_shutdown(conn->ssl, 1);
1283 SSL_shutdown(conn->ssl);
1285 SSL_free(conn->ssl);
1286 tls_engine_deinit(conn);
1287 os_free(conn->subject_match);
1288 os_free(conn->altsubject_match);
1289 os_free(conn->suffix_match);
1290 os_free(conn->domain_match);
1291 os_free(conn->session_ticket);
1296 int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
1298 return conn ? SSL_is_init_finished(conn->ssl) : 0;
1302 int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
1307 /* Shutdown previous TLS connection without notifying the peer
1308 * because the connection was already terminated in practice
1309 * and "close notify" shutdown alert would confuse AS. */
1310 SSL_set_quiet_shutdown(conn->ssl, 1);
1311 SSL_shutdown(conn->ssl);
1312 return SSL_clear(conn->ssl) == 1 ? 0 : -1;
1316 static int tls_match_altsubject_component(X509 *cert, int type,
1317 const char *value, size_t len)
1324 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1326 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1327 gen = sk_GENERAL_NAME_value(ext, i);
1328 if (gen->type != type)
1330 if (os_strlen((char *) gen->d.ia5->data) == len &&
1331 os_memcmp(value, gen->d.ia5->data, len) == 0)
1339 static int tls_match_altsubject(X509 *cert, const char *match)
1342 const char *pos, *end;
1347 if (os_strncmp(pos, "EMAIL:", 6) == 0) {
1350 } else if (os_strncmp(pos, "DNS:", 4) == 0) {
1353 } else if (os_strncmp(pos, "URI:", 4) == 0) {
1357 wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
1361 end = os_strchr(pos, ';');
1363 if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
1364 os_strncmp(end + 1, "DNS:", 4) == 0 ||
1365 os_strncmp(end + 1, "URI:", 4) == 0)
1367 end = os_strchr(end + 1, ';');
1372 len = os_strlen(pos);
1373 if (tls_match_altsubject_component(cert, type, pos, len) > 0)
1382 #ifndef CONFIG_NATIVE_WINDOWS
1383 static int domain_suffix_match(const u8 *val, size_t len, const char *match,
1386 size_t i, match_len;
1388 /* Check for embedded nuls that could mess up suffix matching */
1389 for (i = 0; i < len; i++) {
1390 if (val[i] == '\0') {
1391 wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject");
1396 match_len = os_strlen(match);
1397 if (match_len > len || (full && match_len != len))
1400 if (os_strncasecmp((const char *) val + len - match_len, match,
1402 return 0; /* no match */
1404 if (match_len == len)
1405 return 1; /* exact match */
1407 if (val[len - match_len - 1] == '.')
1408 return 1; /* full label match completes suffix match */
1410 wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match");
1413 #endif /* CONFIG_NATIVE_WINDOWS */
1416 static int tls_match_suffix(X509 *cert, const char *match, int full)
1418 #ifdef CONFIG_NATIVE_WINDOWS
1419 /* wincrypt.h has conflicting X509_NAME definition */
1421 #else /* CONFIG_NATIVE_WINDOWS */
1429 wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s",
1430 full ? "": "suffix ", match);
1432 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1434 for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) {
1435 gen = sk_GENERAL_NAME_value(ext, j);
1436 if (gen->type != GEN_DNS)
1439 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName",
1440 gen->d.dNSName->data,
1441 gen->d.dNSName->length);
1442 if (domain_suffix_match(gen->d.dNSName->data,
1443 gen->d.dNSName->length, match, full) ==
1445 wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found",
1446 full ? "Match" : "Suffix match");
1452 wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched");
1456 name = X509_get_subject_name(cert);
1462 i = X509_NAME_get_index_by_NID(name, NID_commonName, i);
1465 e = X509_NAME_get_entry(name, i);
1468 cn = X509_NAME_ENTRY_get_data(e);
1471 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName",
1472 cn->data, cn->length);
1473 if (domain_suffix_match(cn->data, cn->length, match, full) == 1)
1475 wpa_printf(MSG_DEBUG, "TLS: %s in commonName found",
1476 full ? "Match" : "Suffix match");
1481 wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found",
1482 full ? "": "suffix ");
1484 #endif /* CONFIG_NATIVE_WINDOWS */
1488 static enum tls_fail_reason openssl_tls_fail_reason(int err)
1491 case X509_V_ERR_CERT_REVOKED:
1492 return TLS_FAIL_REVOKED;
1493 case X509_V_ERR_CERT_NOT_YET_VALID:
1494 case X509_V_ERR_CRL_NOT_YET_VALID:
1495 return TLS_FAIL_NOT_YET_VALID;
1496 case X509_V_ERR_CERT_HAS_EXPIRED:
1497 case X509_V_ERR_CRL_HAS_EXPIRED:
1498 return TLS_FAIL_EXPIRED;
1499 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
1500 case X509_V_ERR_UNABLE_TO_GET_CRL:
1501 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
1502 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
1503 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
1504 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1505 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
1506 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
1507 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
1508 case X509_V_ERR_INVALID_CA:
1509 return TLS_FAIL_UNTRUSTED;
1510 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
1511 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
1512 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
1513 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
1514 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
1515 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
1516 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
1517 case X509_V_ERR_CERT_UNTRUSTED:
1518 case X509_V_ERR_CERT_REJECTED:
1519 return TLS_FAIL_BAD_CERTIFICATE;
1521 return TLS_FAIL_UNSPECIFIED;
1526 static struct wpabuf * get_x509_cert(X509 *cert)
1531 int cert_len = i2d_X509(cert, NULL);
1535 buf = wpabuf_alloc(cert_len);
1539 tmp = wpabuf_put(buf, cert_len);
1540 i2d_X509(cert, &tmp);
1545 static void openssl_tls_fail_event(struct tls_connection *conn,
1546 X509 *err_cert, int err, int depth,
1547 const char *subject, const char *err_str,
1548 enum tls_fail_reason reason)
1550 union tls_event_data ev;
1551 struct wpabuf *cert = NULL;
1552 struct tls_context *context = conn->context;
1554 if (context->event_cb == NULL)
1557 cert = get_x509_cert(err_cert);
1558 os_memset(&ev, 0, sizeof(ev));
1559 ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
1560 reason : openssl_tls_fail_reason(err);
1561 ev.cert_fail.depth = depth;
1562 ev.cert_fail.subject = subject;
1563 ev.cert_fail.reason_txt = err_str;
1564 ev.cert_fail.cert = cert;
1565 context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
1570 static void openssl_tls_cert_event(struct tls_connection *conn,
1571 X509 *err_cert, int depth,
1572 const char *subject)
1574 struct wpabuf *cert = NULL;
1575 union tls_event_data ev;
1576 struct tls_context *context = conn->context;
1577 char *altsubject[TLS_MAX_ALT_SUBJECT];
1578 int alt, num_altsubject = 0;
1582 #ifdef CONFIG_SHA256
1584 #endif /* CONFIG_SHA256 */
1586 if (context->event_cb == NULL)
1589 os_memset(&ev, 0, sizeof(ev));
1590 if (conn->cert_probe || context->cert_in_cb) {
1591 cert = get_x509_cert(err_cert);
1592 ev.peer_cert.cert = cert;
1594 #ifdef CONFIG_SHA256
1598 addr[0] = wpabuf_head(cert);
1599 len[0] = wpabuf_len(cert);
1600 if (sha256_vector(1, addr, len, hash) == 0) {
1601 ev.peer_cert.hash = hash;
1602 ev.peer_cert.hash_len = sizeof(hash);
1605 #endif /* CONFIG_SHA256 */
1606 ev.peer_cert.depth = depth;
1607 ev.peer_cert.subject = subject;
1609 ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL);
1610 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1613 if (num_altsubject == TLS_MAX_ALT_SUBJECT)
1615 gen = sk_GENERAL_NAME_value(ext, i);
1616 if (gen->type != GEN_EMAIL &&
1617 gen->type != GEN_DNS &&
1618 gen->type != GEN_URI)
1621 pos = os_malloc(10 + gen->d.ia5->length + 1);
1624 altsubject[num_altsubject++] = pos;
1626 switch (gen->type) {
1628 os_memcpy(pos, "EMAIL:", 6);
1632 os_memcpy(pos, "DNS:", 4);
1636 os_memcpy(pos, "URI:", 4);
1641 os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length);
1642 pos += gen->d.ia5->length;
1646 for (alt = 0; alt < num_altsubject; alt++)
1647 ev.peer_cert.altsubject[alt] = altsubject[alt];
1648 ev.peer_cert.num_altsubject = num_altsubject;
1650 context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
1652 for (alt = 0; alt < num_altsubject; alt++)
1653 os_free(altsubject[alt]);
1657 #ifdef OPENSSL_IS_BORINGSSL
1660 * CertID ::= SEQUENCE {
1661 * hashAlgorithm AlgorithmIdentifier,
1662 * issuerNameHash OCTET STRING, -- Hash of Issuer's DN
1663 * issuerKeyHash OCTET STRING, -- Hash of Issuer's public key
1664 * serialNumber CertificateSerialNumber }
1667 X509_ALGOR *hashAlgorithm;
1668 ASN1_OCTET_STRING *issuerNameHash;
1669 ASN1_OCTET_STRING *issuerKeyHash;
1670 ASN1_INTEGER *serialNumber;
1674 * ResponseBytes ::= SEQUENCE {
1675 * responseType OBJECT IDENTIFIER,
1676 * response OCTET STRING }
1679 ASN1_OBJECT *responseType;
1680 ASN1_OCTET_STRING *response;
1684 * OCSPResponse ::= SEQUENCE {
1685 * responseStatus OCSPResponseStatus,
1686 * responseBytes [0] EXPLICIT ResponseBytes OPTIONAL }
1689 ASN1_ENUMERATED *responseStatus;
1690 ResponseBytes *responseBytes;
1693 ASN1_SEQUENCE(ResponseBytes) = {
1694 ASN1_SIMPLE(ResponseBytes, responseType, ASN1_OBJECT),
1695 ASN1_SIMPLE(ResponseBytes, response, ASN1_OCTET_STRING)
1696 } ASN1_SEQUENCE_END(ResponseBytes);
1698 ASN1_SEQUENCE(OCSPResponse) = {
1699 ASN1_SIMPLE(OCSPResponse, responseStatus, ASN1_ENUMERATED),
1700 ASN1_EXP_OPT(OCSPResponse, responseBytes, ResponseBytes, 0)
1701 } ASN1_SEQUENCE_END(OCSPResponse);
1703 IMPLEMENT_ASN1_FUNCTIONS(OCSPResponse);
1706 * ResponderID ::= CHOICE {
1708 * byKey [2] KeyHash }
1714 ASN1_OCTET_STRING *byKey;
1719 * RevokedInfo ::= SEQUENCE {
1720 * revocationTime GeneralizedTime,
1721 * revocationReason [0] EXPLICIT CRLReason OPTIONAL }
1724 ASN1_GENERALIZEDTIME *revocationTime;
1725 ASN1_ENUMERATED *revocationReason;
1729 * CertStatus ::= CHOICE {
1730 * good [0] IMPLICIT NULL,
1731 * revoked [1] IMPLICIT RevokedInfo,
1732 * unknown [2] IMPLICIT UnknownInfo }
1738 RevokedInfo *revoked;
1744 * SingleResponse ::= SEQUENCE {
1746 * certStatus CertStatus,
1747 * thisUpdate GeneralizedTime,
1748 * nextUpdate [0] EXPLICIT GeneralizedTime OPTIONAL,
1749 * singleExtensions [1] EXPLICIT Extensions OPTIONAL }
1753 CertStatus *certStatus;
1754 ASN1_GENERALIZEDTIME *thisUpdate;
1755 ASN1_GENERALIZEDTIME *nextUpdate;
1756 STACK_OF(X509_EXTENSION) *singleExtensions;
1760 * ResponseData ::= SEQUENCE {
1761 * version [0] EXPLICIT Version DEFAULT v1,
1762 * responderID ResponderID,
1763 * producedAt GeneralizedTime,
1764 * responses SEQUENCE OF SingleResponse,
1765 * responseExtensions [1] EXPLICIT Extensions OPTIONAL }
1768 ASN1_INTEGER *version;
1769 ResponderID *responderID;
1770 ASN1_GENERALIZEDTIME *producedAt;
1771 STACK_OF(SingleResponse) *responses;
1772 STACK_OF(X509_EXTENSION) *responseExtensions;
1776 * BasicOCSPResponse ::= SEQUENCE {
1777 * tbsResponseData ResponseData,
1778 * signatureAlgorithm AlgorithmIdentifier,
1779 * signature BIT STRING,
1780 * certs [0] EXPLICIT SEQUENCE OF Certificate OPTIONAL }
1783 ResponseData *tbsResponseData;
1784 X509_ALGOR *signatureAlgorithm;
1785 ASN1_BIT_STRING *signature;
1786 STACK_OF(X509) *certs;
1787 } BasicOCSPResponse;
1789 ASN1_SEQUENCE(CertID) = {
1790 ASN1_SIMPLE(CertID, hashAlgorithm, X509_ALGOR),
1791 ASN1_SIMPLE(CertID, issuerNameHash, ASN1_OCTET_STRING),
1792 ASN1_SIMPLE(CertID, issuerKeyHash, ASN1_OCTET_STRING),
1793 ASN1_SIMPLE(CertID, serialNumber, ASN1_INTEGER)
1794 } ASN1_SEQUENCE_END(CertID);
1796 ASN1_CHOICE(ResponderID) = {
1797 ASN1_EXP(ResponderID, value.byName, X509_NAME, 1),
1798 ASN1_EXP(ResponderID, value.byKey, ASN1_OCTET_STRING, 2)
1799 } ASN1_CHOICE_END(ResponderID);
1801 ASN1_SEQUENCE(RevokedInfo) = {
1802 ASN1_SIMPLE(RevokedInfo, revocationTime, ASN1_GENERALIZEDTIME),
1803 ASN1_EXP_OPT(RevokedInfo, revocationReason, ASN1_ENUMERATED, 0)
1804 } ASN1_SEQUENCE_END(RevokedInfo);
1806 ASN1_CHOICE(CertStatus) = {
1807 ASN1_IMP(CertStatus, value.good, ASN1_NULL, 0),
1808 ASN1_IMP(CertStatus, value.revoked, RevokedInfo, 1),
1809 ASN1_IMP(CertStatus, value.unknown, ASN1_NULL, 2)
1810 } ASN1_CHOICE_END(CertStatus);
1812 ASN1_SEQUENCE(SingleResponse) = {
1813 ASN1_SIMPLE(SingleResponse, certID, CertID),
1814 ASN1_SIMPLE(SingleResponse, certStatus, CertStatus),
1815 ASN1_SIMPLE(SingleResponse, thisUpdate, ASN1_GENERALIZEDTIME),
1816 ASN1_EXP_OPT(SingleResponse, nextUpdate, ASN1_GENERALIZEDTIME, 0),
1817 ASN1_EXP_SEQUENCE_OF_OPT(SingleResponse, singleExtensions,
1819 } ASN1_SEQUENCE_END(SingleResponse);
1821 ASN1_SEQUENCE(ResponseData) = {
1822 ASN1_EXP_OPT(ResponseData, version, ASN1_INTEGER, 0),
1823 ASN1_SIMPLE(ResponseData, responderID, ResponderID),
1824 ASN1_SIMPLE(ResponseData, producedAt, ASN1_GENERALIZEDTIME),
1825 ASN1_SEQUENCE_OF(ResponseData, responses, SingleResponse),
1826 ASN1_EXP_SEQUENCE_OF_OPT(ResponseData, responseExtensions,
1828 } ASN1_SEQUENCE_END(ResponseData);
1830 ASN1_SEQUENCE(BasicOCSPResponse) = {
1831 ASN1_SIMPLE(BasicOCSPResponse, tbsResponseData, ResponseData),
1832 ASN1_SIMPLE(BasicOCSPResponse, signatureAlgorithm, X509_ALGOR),
1833 ASN1_SIMPLE(BasicOCSPResponse, signature, ASN1_BIT_STRING),
1834 ASN1_EXP_SEQUENCE_OF_OPT(BasicOCSPResponse, certs, X509, 0)
1835 } ASN1_SEQUENCE_END(BasicOCSPResponse);
1837 IMPLEMENT_ASN1_FUNCTIONS(BasicOCSPResponse);
1839 #define sk_SingleResponse_num(sk) \
1840 sk_num(CHECKED_CAST(_STACK *, STACK_OF(SingleResponse) *, sk))
1842 #define sk_SingleResponse_value(sk, i) \
1843 ((SingleResponse *) \
1844 sk_value(CHECKED_CAST(_STACK *, STACK_OF(SingleResponse) *, sk), (i)))
1847 static char * mem_bio_to_str(BIO *out)
1853 rlen = BIO_ctrl_pending(out);
1854 txt = os_malloc(rlen + 1);
1860 res = BIO_read(out, txt, rlen);
1872 static char * generalizedtime_str(ASN1_GENERALIZEDTIME *t)
1876 out = BIO_new(BIO_s_mem());
1880 if (!ASN1_GENERALIZEDTIME_print(out, t)) {
1885 return mem_bio_to_str(out);
1889 static char * responderid_str(ResponderID *rid)
1893 out = BIO_new(BIO_s_mem());
1897 switch (rid->type) {
1899 X509_NAME_print_ex(out, rid->value.byName, 0, XN_FLAG_ONELINE);
1902 i2a_ASN1_STRING(out, rid->value.byKey, V_ASN1_OCTET_STRING);
1909 return mem_bio_to_str(out);
1913 static char * octet_string_str(ASN1_OCTET_STRING *o)
1917 out = BIO_new(BIO_s_mem());
1921 i2a_ASN1_STRING(out, o, V_ASN1_OCTET_STRING);
1922 return mem_bio_to_str(out);
1926 static char * integer_str(ASN1_INTEGER *i)
1930 out = BIO_new(BIO_s_mem());
1934 i2a_ASN1_INTEGER(out, i);
1935 return mem_bio_to_str(out);
1939 static char * algor_str(X509_ALGOR *alg)
1943 out = BIO_new(BIO_s_mem());
1947 i2a_ASN1_OBJECT(out, alg->algorithm);
1948 return mem_bio_to_str(out);
1952 static char * extensions_str(const char *title, STACK_OF(X509_EXTENSION) *ext)
1959 out = BIO_new(BIO_s_mem());
1963 if (!X509V3_extensions_print(out, title, ext, 0, 0)) {
1967 return mem_bio_to_str(out);
1971 static int ocsp_resp_valid(ASN1_GENERALIZEDTIME *thisupd,
1972 ASN1_GENERALIZEDTIME *nextupd)
1976 if (!ASN1_GENERALIZEDTIME_check(thisupd)) {
1977 wpa_printf(MSG_DEBUG,
1978 "OpenSSL: Invalid OCSP response thisUpdate");
1983 tmp = now + 5 * 60; /* allow five minute clock difference */
1984 if (X509_cmp_time(thisupd, &tmp) > 0) {
1985 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response not yet valid");
1990 return 1; /* OK - no limit on response age */
1992 if (!ASN1_GENERALIZEDTIME_check(nextupd)) {
1993 wpa_printf(MSG_DEBUG,
1994 "OpenSSL: Invalid OCSP response nextUpdate");
1998 tmp = now - 5 * 60; /* allow five minute clock difference */
1999 if (X509_cmp_time(nextupd, &tmp) < 0) {
2000 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response expired");
2004 if (ASN1_STRING_cmp(nextupd, thisupd) < 0) {
2005 wpa_printf(MSG_DEBUG,
2006 "OpenSSL: OCSP response nextUpdate before thisUpdate");
2010 /* Both thisUpdate and nextUpdate are valid */
2015 static int issuer_match(X509 *cert, X509 *issuer, CertID *certid)
2018 ASN1_BIT_STRING *ikey;
2021 unsigned char md[EVP_MAX_MD_SIZE];
2022 ASN1_OCTET_STRING *hash;
2025 dgst = EVP_get_digestbyobj(certid->hashAlgorithm->algorithm);
2027 wpa_printf(MSG_DEBUG,
2028 "OpenSSL: Could not find matching hash algorithm for OCSP");
2032 iname = X509_get_issuer_name(cert);
2033 if (!X509_NAME_digest(iname, dgst, md, &len))
2035 hash = ASN1_OCTET_STRING_new();
2038 if (!ASN1_OCTET_STRING_set(hash, md, len)) {
2039 ASN1_OCTET_STRING_free(hash);
2043 txt = octet_string_str(hash);
2045 wpa_printf(MSG_DEBUG, "OpenSSL: calculated issuerNameHash: %s",
2050 if (ASN1_OCTET_STRING_cmp(certid->issuerNameHash, hash)) {
2051 ASN1_OCTET_STRING_free(hash);
2055 ikey = X509_get0_pubkey_bitstr(issuer);
2056 if (!EVP_Digest(ikey->data, ikey->length, md, &len, dgst, NULL) ||
2057 !ASN1_OCTET_STRING_set(hash, md, len)) {
2058 ASN1_OCTET_STRING_free(hash);
2062 txt = octet_string_str(hash);
2064 wpa_printf(MSG_DEBUG, "OpenSSL: calculated issuerKeyHash: %s",
2069 if (ASN1_OCTET_STRING_cmp(certid->issuerKeyHash, hash)) {
2070 ASN1_OCTET_STRING_free(hash);
2074 ASN1_OCTET_STRING_free(hash);
2079 static X509 * ocsp_find_signer(STACK_OF(X509) *certs, ResponderID *rid)
2082 unsigned char hash[SHA_DIGEST_LENGTH];
2084 if (rid->type == 0) {
2086 return X509_find_by_subject(certs, rid->value.byName);
2090 if (rid->value.byKey->length != SHA_DIGEST_LENGTH)
2092 for (i = 0; i < sk_X509_num(certs); i++) {
2093 X509 *x = sk_X509_value(certs, i);
2095 X509_pubkey_digest(x, EVP_sha1(), hash, NULL);
2096 if (os_memcmp(rid->value.byKey->data, hash,
2097 SHA_DIGEST_LENGTH) == 0)
2106 OCSP_GOOD, OCSP_REVOKED, OCSP_NO_RESPONSE, OCSP_INVALID
2109 static enum ocsp_result check_ocsp_resp(struct tls_connection *conn,
2110 X509 *cert, X509 *issuer)
2112 const uint8_t *resp_data;
2116 ResponseBytes *bytes;
2117 const u8 *basic_data;
2119 BasicOCSPResponse *basic;
2123 unsigned int j, num_resp;
2124 SingleResponse *matching_resp = NULL, *cmp_sresp;
2125 enum ocsp_result result = OCSP_INVALID;
2127 STACK_OF(X509) *untrusted = NULL, *certs = NULL, *chain = NULL;
2129 X509 *signer, *tmp_cert;
2130 int signer_trusted = 0;
2135 txt = integer_str(X509_get_serialNumber(cert));
2137 wpa_printf(MSG_DEBUG,
2138 "OpenSSL: Searching OCSP response for peer certificate serialNumber: %s", txt);
2142 SSL_get0_ocsp_response(conn->ssl, &resp_data, &resp_len);
2143 if (resp_data == NULL || resp_len == 0) {
2144 wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received");
2145 return OCSP_NO_RESPONSE;
2148 wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", resp_data, resp_len);
2150 resp = d2i_OCSPResponse(NULL, &resp_data, resp_len);
2152 wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSPResponse");
2153 return OCSP_INVALID;
2156 status = ASN1_ENUMERATED_get(resp->responseStatus);
2158 wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d",
2160 return OCSP_INVALID;
2163 bytes = resp->responseBytes;
2166 OBJ_obj2nid(bytes->responseType) != NID_id_pkix_OCSP_basic) {
2167 wpa_printf(MSG_INFO,
2168 "OpenSSL: Could not find BasicOCSPResponse");
2169 return OCSP_INVALID;
2172 basic_data = ASN1_STRING_data(bytes->response);
2173 basic_len = ASN1_STRING_length(bytes->response);
2174 wpa_hexdump(MSG_DEBUG, "OpenSSL: BasicOCSPResponse",
2175 basic_data, basic_len);
2177 basic = d2i_BasicOCSPResponse(NULL, &basic_data, basic_len);
2179 wpa_printf(MSG_INFO,
2180 "OpenSSL: Could not parse BasicOCSPResponse");
2181 OCSPResponse_free(resp);
2182 return OCSP_INVALID;
2185 rd = basic->tbsResponseData;
2188 untrusted = sk_X509_dup(basic->certs);
2190 num = sk_X509_num(basic->certs);
2191 for (i = 0; i < num; i++) {
2194 extra_cert = sk_X509_value(basic->certs, i);
2195 X509_NAME_oneline(X509_get_subject_name(extra_cert),
2197 wpa_printf(MSG_DEBUG,
2198 "OpenSSL: BasicOCSPResponse cert %s", buf);
2200 if (!sk_X509_push(untrusted, extra_cert)) {
2201 wpa_printf(MSG_DEBUG,
2202 "OpenSSL: Could not add certificate to the untrusted stack");
2207 store = SSL_CTX_get_cert_store(conn->ssl_ctx);
2208 if (conn->peer_issuer) {
2209 if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) {
2210 tls_show_errors(MSG_INFO, __func__,
2211 "OpenSSL: Could not add issuer to certificate store");
2213 certs = sk_X509_new_null();
2215 tmp_cert = X509_dup(conn->peer_issuer);
2216 if (tmp_cert && !sk_X509_push(certs, tmp_cert)) {
2219 "OpenSSL: Could not add issuer to OCSP responder trust store");
2220 X509_free(tmp_cert);
2221 sk_X509_free(certs);
2224 if (certs && conn->peer_issuer_issuer) {
2225 tmp_cert = X509_dup(conn->peer_issuer_issuer);
2227 !sk_X509_push(certs, tmp_cert)) {
2230 "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
2231 X509_free(tmp_cert);
2237 signer = ocsp_find_signer(certs, rd->responderID);
2239 signer = ocsp_find_signer(untrusted, rd->responderID);
2243 wpa_printf(MSG_DEBUG,
2244 "OpenSSL: Could not find OCSP signer certificate");
2248 skey = X509_get_pubkey(signer);
2250 wpa_printf(MSG_DEBUG,
2251 "OpenSSL: Could not get OCSP signer public key");
2254 if (ASN1_item_verify(ASN1_ITEM_rptr(ResponseData),
2255 basic->signatureAlgorithm, basic->signature,
2256 basic->tbsResponseData, skey) <= 0) {
2257 wpa_printf(MSG_DEBUG,
2258 "OpenSSL: BasicOCSPResponse signature is invalid");
2262 X509_NAME_oneline(X509_get_subject_name(signer), buf, sizeof(buf));
2263 wpa_printf(MSG_DEBUG,
2264 "OpenSSL: Found OCSP signer certificate %s and verified BasicOCSPResponse signature",
2267 if (!X509_STORE_CTX_init(&ctx, store, signer, untrusted))
2269 X509_STORE_CTX_set_purpose(&ctx, X509_PURPOSE_OCSP_HELPER);
2270 ret = X509_verify_cert(&ctx);
2271 chain = X509_STORE_CTX_get1_chain(&ctx);
2272 X509_STORE_CTX_cleanup(&ctx);
2274 wpa_printf(MSG_DEBUG,
2275 "OpenSSL: Could not validate OCSP signer certificate");
2279 if (!chain || sk_X509_num(chain) <= 0) {
2280 wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP signer chain found");
2284 if (!signer_trusted) {
2285 X509_check_purpose(signer, -1, 0);
2286 if ((signer->ex_flags & EXFLAG_XKUSAGE) &&
2287 (signer->ex_xkusage & XKU_OCSP_SIGN)) {
2288 wpa_printf(MSG_DEBUG,
2289 "OpenSSL: OCSP signer certificate delegation OK");
2291 tmp_cert = sk_X509_value(chain, sk_X509_num(chain) - 1);
2292 if (X509_check_trust(tmp_cert, NID_OCSP_sign, 0) !=
2293 X509_TRUST_TRUSTED) {
2294 wpa_printf(MSG_DEBUG,
2295 "OpenSSL: OCSP signer certificate not trusted");
2296 result = OCSP_NO_RESPONSE;
2302 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP version: %lu",
2303 ASN1_INTEGER_get(rd->version));
2305 txt = responderid_str(rd->responderID);
2307 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP responderID: %s",
2312 txt = generalizedtime_str(rd->producedAt);
2314 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP producedAt: %s",
2319 num_resp = sk_SingleResponse_num(rd->responses);
2320 if (num_resp == 0) {
2321 wpa_printf(MSG_DEBUG,
2322 "OpenSSL: No OCSP SingleResponse within BasicOCSPResponse");
2323 result = OCSP_NO_RESPONSE;
2326 cmp_sresp = sk_SingleResponse_value(rd->responses, 0);
2327 for (j = 0; j < num_resp; j++) {
2328 SingleResponse *sresp;
2329 CertID *cid1, *cid2;
2331 sresp = sk_SingleResponse_value(rd->responses, j);
2332 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP SingleResponse %u/%u",
2335 txt = algor_str(sresp->certID->hashAlgorithm);
2337 wpa_printf(MSG_DEBUG,
2338 "OpenSSL: certID hashAlgorithm: %s", txt);
2342 txt = octet_string_str(sresp->certID->issuerNameHash);
2344 wpa_printf(MSG_DEBUG,
2345 "OpenSSL: certID issuerNameHash: %s", txt);
2349 txt = octet_string_str(sresp->certID->issuerKeyHash);
2351 wpa_printf(MSG_DEBUG,
2352 "OpenSSL: certID issuerKeyHash: %s", txt);
2356 txt = integer_str(sresp->certID->serialNumber);
2358 wpa_printf(MSG_DEBUG,
2359 "OpenSSL: certID serialNumber: %s", txt);
2363 switch (sresp->certStatus->type) {
2365 wpa_printf(MSG_DEBUG, "OpenSSL: certStatus: good");
2368 wpa_printf(MSG_DEBUG, "OpenSSL: certStatus: revoked");
2371 wpa_printf(MSG_DEBUG, "OpenSSL: certStatus: unknown");
2375 txt = generalizedtime_str(sresp->thisUpdate);
2377 wpa_printf(MSG_DEBUG, "OpenSSL: thisUpdate: %s", txt);
2381 if (sresp->nextUpdate) {
2382 txt = generalizedtime_str(sresp->nextUpdate);
2384 wpa_printf(MSG_DEBUG, "OpenSSL: nextUpdate: %s",
2390 txt = extensions_str("singleExtensions",
2391 sresp->singleExtensions);
2393 wpa_printf(MSG_DEBUG, "OpenSSL: %s", txt);
2397 cid1 = cmp_sresp->certID;
2398 cid2 = sresp->certID;
2400 (OBJ_cmp(cid1->hashAlgorithm->algorithm,
2401 cid2->hashAlgorithm->algorithm) != 0 ||
2402 ASN1_OCTET_STRING_cmp(cid1->issuerNameHash,
2403 cid2->issuerNameHash) != 0 ||
2404 ASN1_OCTET_STRING_cmp(cid1->issuerKeyHash,
2405 cid2->issuerKeyHash) != 0)) {
2406 wpa_printf(MSG_DEBUG,
2407 "OpenSSL: Different OCSP response issuer information between SingleResponse values within BasicOCSPResponse");
2411 if (!matching_resp && issuer &&
2412 ASN1_INTEGER_cmp(sresp->certID->serialNumber,
2413 X509_get_serialNumber(cert)) == 0 &&
2414 issuer_match(cert, issuer, sresp->certID) == 0) {
2415 wpa_printf(MSG_DEBUG,
2416 "OpenSSL: This response matches peer certificate");
2417 matching_resp = sresp;
2421 txt = extensions_str("responseExtensions", rd->responseExtensions);
2423 wpa_printf(MSG_DEBUG, "OpenSSL: %s", txt);
2427 if (!matching_resp) {
2428 wpa_printf(MSG_DEBUG,
2429 "OpenSSL: Could not find OCSP response that matches the peer certificate");
2430 result = OCSP_NO_RESPONSE;
2434 if (!ocsp_resp_valid(matching_resp->thisUpdate,
2435 matching_resp->nextUpdate)) {
2436 wpa_printf(MSG_DEBUG,
2437 "OpenSSL: OCSP response not valid at this time");
2441 if (matching_resp->certStatus->type == 1) {
2442 wpa_printf(MSG_DEBUG,
2443 "OpenSSL: OCSP response indicated that the peer certificate has been revoked");
2444 result = OCSP_REVOKED;
2448 if (matching_resp->certStatus->type != 0) {
2449 wpa_printf(MSG_DEBUG,
2450 "OpenSSL: OCSP response did not indicate good status");
2451 result = OCSP_NO_RESPONSE;
2455 /* OCSP response indicated the certificate is good. */
2458 sk_X509_pop_free(chain, X509_free);
2459 sk_X509_free(untrusted);
2460 sk_X509_pop_free(certs, X509_free);
2461 BasicOCSPResponse_free(basic);
2462 OCSPResponse_free(resp);
2467 #endif /* OPENSSL_IS_BORINGSSL */
2470 static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
2476 struct tls_connection *conn;
2477 struct tls_context *context;
2478 char *match, *altmatch, *suffix_match, *domain_match;
2479 const char *err_str;
2481 err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
2485 err = X509_STORE_CTX_get_error(x509_ctx);
2486 depth = X509_STORE_CTX_get_error_depth(x509_ctx);
2487 ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
2488 SSL_get_ex_data_X509_STORE_CTX_idx());
2489 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
2491 conn = SSL_get_app_data(ssl);
2496 conn->peer_cert = err_cert;
2497 else if (depth == 1)
2498 conn->peer_issuer = err_cert;
2499 else if (depth == 2)
2500 conn->peer_issuer_issuer = err_cert;
2502 context = conn->context;
2503 match = conn->subject_match;
2504 altmatch = conn->altsubject_match;
2505 suffix_match = conn->suffix_match;
2506 domain_match = conn->domain_match;
2508 if (!preverify_ok && !conn->ca_cert_verify)
2510 if (!preverify_ok && depth > 0 && conn->server_cert_only)
2512 if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) &&
2513 (err == X509_V_ERR_CERT_HAS_EXPIRED ||
2514 err == X509_V_ERR_CERT_NOT_YET_VALID)) {
2515 wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity "
2520 err_str = X509_verify_cert_error_string(err);
2522 #ifdef CONFIG_SHA256
2524 * Do not require preverify_ok so we can explicity allow otherwise
2525 * invalid pinned server certificates.
2527 if (depth == 0 && conn->server_cert_only) {
2528 struct wpabuf *cert;
2529 cert = get_x509_cert(err_cert);
2531 wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch "
2532 "server certificate data");
2538 addr[0] = wpabuf_head(cert);
2539 len[0] = wpabuf_len(cert);
2540 if (sha256_vector(1, addr, len, hash) < 0 ||
2541 os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
2542 err_str = "Server certificate mismatch";
2543 err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
2545 } else if (!preverify_ok) {
2547 * Certificate matches pinned certificate, allow
2548 * regardless of other problems.
2550 wpa_printf(MSG_DEBUG,
2551 "OpenSSL: Ignore validation issues for a pinned server certificate");
2557 #endif /* CONFIG_SHA256 */
2559 if (!preverify_ok) {
2560 wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
2561 " error %d (%s) depth %d for '%s'", err, err_str,
2563 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2564 err_str, TLS_FAIL_UNSPECIFIED);
2565 return preverify_ok;
2568 wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d "
2569 "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
2570 preverify_ok, err, err_str,
2571 conn->ca_cert_verify, depth, buf);
2572 if (depth == 0 && match && os_strstr(buf, match) == NULL) {
2573 wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
2574 "match with '%s'", buf, match);
2576 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2578 TLS_FAIL_SUBJECT_MISMATCH);
2579 } else if (depth == 0 && altmatch &&
2580 !tls_match_altsubject(err_cert, altmatch)) {
2581 wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
2582 "'%s' not found", altmatch);
2584 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2585 "AltSubject mismatch",
2586 TLS_FAIL_ALTSUBJECT_MISMATCH);
2587 } else if (depth == 0 && suffix_match &&
2588 !tls_match_suffix(err_cert, suffix_match, 0)) {
2589 wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found",
2592 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2593 "Domain suffix mismatch",
2594 TLS_FAIL_DOMAIN_SUFFIX_MISMATCH);
2595 } else if (depth == 0 && domain_match &&
2596 !tls_match_suffix(err_cert, domain_match, 1)) {
2597 wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found",
2600 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2602 TLS_FAIL_DOMAIN_MISMATCH);
2604 openssl_tls_cert_event(conn, err_cert, depth, buf);
2606 if (conn->cert_probe && preverify_ok && depth == 0) {
2607 wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate "
2608 "on probe-only run");
2610 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2611 "Server certificate chain probe",
2612 TLS_FAIL_SERVER_CHAIN_PROBE);
2615 #ifdef OPENSSL_IS_BORINGSSL
2616 if (depth == 0 && (conn->flags & TLS_CONN_REQUEST_OCSP)) {
2617 enum ocsp_result res;
2619 res = check_ocsp_resp(conn, err_cert, conn->peer_issuer);
2620 if (res == OCSP_REVOKED) {
2622 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2623 "certificate revoked",
2625 if (err == X509_V_OK)
2626 X509_STORE_CTX_set_error(
2627 x509_ctx, X509_V_ERR_CERT_REVOKED);
2628 } else if (res != OCSP_GOOD &&
2629 (conn->flags & TLS_CONN_REQUIRE_OCSP)) {
2631 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2632 "bad certificate status response",
2633 TLS_FAIL_UNSPECIFIED);
2636 #endif /* OPENSSL_IS_BORINGSSL */
2638 if (preverify_ok && context->event_cb != NULL)
2639 context->event_cb(context->cb_ctx,
2640 TLS_CERT_CHAIN_SUCCESS, NULL);
2642 return preverify_ok;
2646 #ifndef OPENSSL_NO_STDIO
2647 static int tls_load_ca_der(struct tls_data *data, const char *ca_cert)
2649 SSL_CTX *ssl_ctx = data->ssl;
2650 X509_LOOKUP *lookup;
2653 lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx),
2654 X509_LOOKUP_file());
2655 if (lookup == NULL) {
2656 tls_show_errors(MSG_WARNING, __func__,
2657 "Failed add lookup for X509 store");
2661 if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
2662 unsigned long err = ERR_peek_error();
2663 tls_show_errors(MSG_WARNING, __func__,
2664 "Failed load CA in DER format");
2665 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2666 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2667 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
2668 "cert already in hash table error",
2676 #endif /* OPENSSL_NO_STDIO */
2679 static int tls_connection_ca_cert(struct tls_data *data,
2680 struct tls_connection *conn,
2681 const char *ca_cert, const u8 *ca_cert_blob,
2682 size_t ca_cert_blob_len, const char *ca_path)
2684 SSL_CTX *ssl_ctx = data->ssl;
2688 * Remove previously configured trusted CA certificates before adding
2691 store = X509_STORE_new();
2692 if (store == NULL) {
2693 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
2694 "certificate store", __func__);
2697 SSL_CTX_set_cert_store(ssl_ctx, store);
2699 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2700 conn->ca_cert_verify = 1;
2702 if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
2703 wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate "
2705 conn->cert_probe = 1;
2706 conn->ca_cert_verify = 0;
2710 if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
2711 #ifdef CONFIG_SHA256
2712 const char *pos = ca_cert + 7;
2713 if (os_strncmp(pos, "server/sha256/", 14) != 0) {
2714 wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert "
2715 "hash value '%s'", ca_cert);
2719 if (os_strlen(pos) != 32 * 2) {
2720 wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 "
2721 "hash length in ca_cert '%s'", ca_cert);
2724 if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
2725 wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash "
2726 "value in ca_cert '%s'", ca_cert);
2729 conn->server_cert_only = 1;
2730 wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server "
2731 "certificate match");
2733 #else /* CONFIG_SHA256 */
2734 wpa_printf(MSG_INFO, "No SHA256 included in the build - "
2735 "cannot validate server certificate hash");
2737 #endif /* CONFIG_SHA256 */
2741 X509 *cert = d2i_X509(NULL,
2742 (const unsigned char **) &ca_cert_blob,
2745 tls_show_errors(MSG_WARNING, __func__,
2746 "Failed to parse ca_cert_blob");
2750 if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx),
2752 unsigned long err = ERR_peek_error();
2753 tls_show_errors(MSG_WARNING, __func__,
2754 "Failed to add ca_cert_blob to "
2755 "certificate store");
2756 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2757 ERR_GET_REASON(err) ==
2758 X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2759 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
2760 "cert already in hash table error",
2768 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
2769 "to certificate store", __func__);
2774 if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) {
2775 BIO *bio = BIO_from_keystore(&ca_cert[11]);
2776 STACK_OF(X509_INFO) *stack = NULL;
2780 stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL);
2786 for (i = 0; i < sk_X509_INFO_num(stack); ++i) {
2787 X509_INFO *info = sk_X509_INFO_value(stack, i);
2789 X509_STORE_add_cert(ssl_ctx->cert_store,
2793 X509_STORE_add_crl(ssl_ctx->cert_store,
2797 sk_X509_INFO_pop_free(stack, X509_INFO_free);
2798 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2801 #endif /* ANDROID */
2803 #ifdef CONFIG_NATIVE_WINDOWS
2804 if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
2806 wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
2807 "system certificate store");
2810 #endif /* CONFIG_NATIVE_WINDOWS */
2812 if (ca_cert || ca_path) {
2813 #ifndef OPENSSL_NO_STDIO
2814 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
2816 tls_show_errors(MSG_WARNING, __func__,
2817 "Failed to load root certificates");
2819 tls_load_ca_der(data, ca_cert) == 0) {
2820 wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
2821 "DER format CA certificate",
2826 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
2827 "certificate(s) loaded");
2828 tls_get_errors(data);
2830 #else /* OPENSSL_NO_STDIO */
2831 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
2834 #endif /* OPENSSL_NO_STDIO */
2836 /* No ca_cert configured - do not try to verify server
2838 conn->ca_cert_verify = 0;
2845 static int tls_global_ca_cert(struct tls_data *data, const char *ca_cert)
2847 SSL_CTX *ssl_ctx = data->ssl;
2850 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
2852 tls_show_errors(MSG_WARNING, __func__,
2853 "Failed to load root certificates");
2857 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
2858 "certificate(s) loaded");
2860 #ifndef OPENSSL_NO_STDIO
2861 /* Add the same CAs to the client certificate requests */
2862 SSL_CTX_set_client_CA_list(ssl_ctx,
2863 SSL_load_client_CA_file(ca_cert));
2864 #endif /* OPENSSL_NO_STDIO */
2871 int tls_global_set_verify(void *ssl_ctx, int check_crl)
2876 struct tls_data *data = ssl_ctx;
2877 X509_STORE *cs = SSL_CTX_get_cert_store(data->ssl);
2879 tls_show_errors(MSG_INFO, __func__, "Failed to get "
2880 "certificate store when enabling "
2884 flags = X509_V_FLAG_CRL_CHECK;
2886 flags |= X509_V_FLAG_CRL_CHECK_ALL;
2887 X509_STORE_set_flags(cs, flags);
2893 static int tls_connection_set_subject_match(struct tls_connection *conn,
2894 const char *subject_match,
2895 const char *altsubject_match,
2896 const char *suffix_match,
2897 const char *domain_match)
2899 os_free(conn->subject_match);
2900 conn->subject_match = NULL;
2901 if (subject_match) {
2902 conn->subject_match = os_strdup(subject_match);
2903 if (conn->subject_match == NULL)
2907 os_free(conn->altsubject_match);
2908 conn->altsubject_match = NULL;
2909 if (altsubject_match) {
2910 conn->altsubject_match = os_strdup(altsubject_match);
2911 if (conn->altsubject_match == NULL)
2915 os_free(conn->suffix_match);
2916 conn->suffix_match = NULL;
2918 conn->suffix_match = os_strdup(suffix_match);
2919 if (conn->suffix_match == NULL)
2923 os_free(conn->domain_match);
2924 conn->domain_match = NULL;
2926 conn->domain_match = os_strdup(domain_match);
2927 if (conn->domain_match == NULL)
2935 static void tls_set_conn_flags(SSL *ssl, unsigned int flags)
2937 #ifdef SSL_OP_NO_TICKET
2938 if (flags & TLS_CONN_DISABLE_SESSION_TICKET)
2939 SSL_set_options(ssl, SSL_OP_NO_TICKET);
2940 #ifdef SSL_clear_options
2942 SSL_clear_options(ssl, SSL_OP_NO_TICKET);
2943 #endif /* SSL_clear_options */
2944 #endif /* SSL_OP_NO_TICKET */
2946 #ifdef SSL_OP_NO_TLSv1
2947 if (flags & TLS_CONN_DISABLE_TLSv1_0)
2948 SSL_set_options(ssl, SSL_OP_NO_TLSv1);
2950 SSL_clear_options(ssl, SSL_OP_NO_TLSv1);
2951 #endif /* SSL_OP_NO_TLSv1 */
2952 #ifdef SSL_OP_NO_TLSv1_1
2953 if (flags & TLS_CONN_DISABLE_TLSv1_1)
2954 SSL_set_options(ssl, SSL_OP_NO_TLSv1_1);
2956 SSL_clear_options(ssl, SSL_OP_NO_TLSv1_1);
2957 #endif /* SSL_OP_NO_TLSv1_1 */
2958 #ifdef SSL_OP_NO_TLSv1_2
2959 if (flags & TLS_CONN_DISABLE_TLSv1_2)
2960 SSL_set_options(ssl, SSL_OP_NO_TLSv1_2);
2962 SSL_clear_options(ssl, SSL_OP_NO_TLSv1_2);
2963 #endif /* SSL_OP_NO_TLSv1_2 */
2967 int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
2968 int verify_peer, unsigned int flags,
2969 const u8 *session_ctx, size_t session_ctx_len)
2971 static int counter = 0;
2972 struct tls_data *data = ssl_ctx;
2978 conn->ca_cert_verify = 1;
2979 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
2980 SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
2981 SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
2983 conn->ca_cert_verify = 0;
2984 SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
2987 tls_set_conn_flags(conn->ssl, flags);
2988 conn->flags = flags;
2990 SSL_set_accept_state(conn->ssl);
2992 if (data->tls_session_lifetime == 0) {
2994 * Set session id context to a unique value to make sure
2995 * session resumption cannot be used either through session
2996 * caching or TLS ticket extension.
2999 SSL_set_session_id_context(conn->ssl,
3000 (const unsigned char *) &counter,
3002 } else if (session_ctx) {
3003 SSL_set_session_id_context(conn->ssl, session_ctx,
3011 static int tls_connection_client_cert(struct tls_connection *conn,
3012 const char *client_cert,
3013 const u8 *client_cert_blob,
3014 size_t client_cert_blob_len)
3016 if (client_cert == NULL && client_cert_blob == NULL)
3019 if (client_cert_blob &&
3020 SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
3021 client_cert_blob_len) == 1) {
3022 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
3025 } else if (client_cert_blob) {
3026 tls_show_errors(MSG_DEBUG, __func__,
3027 "SSL_use_certificate_ASN1 failed");
3030 if (client_cert == NULL)
3034 if (os_strncmp("keystore://", client_cert, 11) == 0) {
3035 BIO *bio = BIO_from_keystore(&client_cert[11]);
3039 x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
3043 if (SSL_use_certificate(conn->ssl, x509) == 1)
3049 #endif /* ANDROID */
3051 #ifndef OPENSSL_NO_STDIO
3052 if (SSL_use_certificate_file(conn->ssl, client_cert,
3053 SSL_FILETYPE_ASN1) == 1) {
3054 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
3059 if (SSL_use_certificate_file(conn->ssl, client_cert,
3060 SSL_FILETYPE_PEM) == 1) {
3062 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
3067 tls_show_errors(MSG_DEBUG, __func__,
3068 "SSL_use_certificate_file failed");
3069 #else /* OPENSSL_NO_STDIO */
3070 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
3071 #endif /* OPENSSL_NO_STDIO */
3077 static int tls_global_client_cert(struct tls_data *data,
3078 const char *client_cert)
3080 #ifndef OPENSSL_NO_STDIO
3081 SSL_CTX *ssl_ctx = data->ssl;
3083 if (client_cert == NULL)
3086 if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
3087 SSL_FILETYPE_ASN1) != 1 &&
3088 SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 &&
3089 SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
3090 SSL_FILETYPE_PEM) != 1) {
3091 tls_show_errors(MSG_INFO, __func__,
3092 "Failed to load client certificate");
3096 #else /* OPENSSL_NO_STDIO */
3097 if (client_cert == NULL)
3099 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
3101 #endif /* OPENSSL_NO_STDIO */
3105 static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
3107 if (password == NULL) {
3110 os_strlcpy(buf, (char *) password, size);
3111 return os_strlen(buf);
3116 static int tls_parse_pkcs12(struct tls_data *data, SSL *ssl, PKCS12 *p12,
3121 STACK_OF(X509) *certs;
3130 if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
3131 tls_show_errors(MSG_DEBUG, __func__,
3132 "Failed to parse PKCS12 file");
3136 wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
3139 X509_NAME_oneline(X509_get_subject_name(cert), buf,
3141 wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
3142 "subject='%s'", buf);
3144 if (SSL_use_certificate(ssl, cert) != 1)
3147 if (SSL_CTX_use_certificate(data->ssl, cert) != 1)
3154 wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
3156 if (SSL_use_PrivateKey(ssl, pkey) != 1)
3159 if (SSL_CTX_use_PrivateKey(data->ssl, pkey) != 1)
3162 EVP_PKEY_free(pkey);
3166 #if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
3167 SSL_clear_chain_certs(ssl);
3168 while ((cert = sk_X509_pop(certs)) != NULL) {
3169 X509_NAME_oneline(X509_get_subject_name(cert), buf,
3171 wpa_printf(MSG_DEBUG, "TLS: additional certificate"
3172 " from PKCS12: subject='%s'", buf);
3173 if (SSL_add1_chain_cert(ssl, cert) != 1) {
3174 tls_show_errors(MSG_DEBUG, __func__,
3175 "Failed to add additional certificate");
3181 /* Try to continue anyway */
3183 sk_X509_free(certs);
3184 #ifndef OPENSSL_IS_BORINGSSL
3185 res = SSL_build_cert_chain(ssl,
3186 SSL_BUILD_CHAIN_FLAG_CHECK |
3187 SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR);
3189 tls_show_errors(MSG_DEBUG, __func__,
3190 "Failed to build certificate chain");
3191 } else if (res == 2) {
3192 wpa_printf(MSG_DEBUG,
3193 "TLS: Ignore certificate chain verification error when building chain with PKCS#12 extra certificates");
3195 #endif /* OPENSSL_IS_BORINGSSL */
3197 * Try to continue regardless of result since it is possible for
3198 * the extra certificates not to be required.
3201 #else /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
3202 #if OPENSSL_VERSION_NUMBER >= 0x10001000L
3203 SSL_CTX_clear_extra_chain_certs(data->ssl);
3204 #endif /* OPENSSL_VERSION_NUMBER >= 0x10001000L */
3205 while ((cert = sk_X509_pop(certs)) != NULL) {
3206 X509_NAME_oneline(X509_get_subject_name(cert), buf,
3208 wpa_printf(MSG_DEBUG, "TLS: additional certificate"
3209 " from PKCS12: subject='%s'", buf);
3211 * There is no SSL equivalent for the chain cert - so
3212 * always add it to the context...
3214 if (SSL_CTX_add_extra_chain_cert(data->ssl, cert) != 1)
3220 sk_X509_free(certs);
3221 #endif /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
3227 tls_get_errors(data);
3231 #endif /* PKCS12_FUNCS */
3234 static int tls_read_pkcs12(struct tls_data *data, SSL *ssl,
3235 const char *private_key, const char *passwd)
3241 f = fopen(private_key, "rb");
3245 p12 = d2i_PKCS12_fp(f, NULL);
3249 tls_show_errors(MSG_INFO, __func__,
3250 "Failed to use PKCS#12 file");
3254 return tls_parse_pkcs12(data, ssl, p12, passwd);
3256 #else /* PKCS12_FUNCS */
3257 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
3260 #endif /* PKCS12_FUNCS */
3264 static int tls_read_pkcs12_blob(struct tls_data *data, SSL *ssl,
3265 const u8 *blob, size_t len, const char *passwd)
3270 p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len);
3272 tls_show_errors(MSG_INFO, __func__,
3273 "Failed to use PKCS#12 blob");
3277 return tls_parse_pkcs12(data, ssl, p12, passwd);
3279 #else /* PKCS12_FUNCS */
3280 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
3283 #endif /* PKCS12_FUNCS */
3287 #ifndef OPENSSL_NO_ENGINE
3288 static int tls_engine_get_cert(struct tls_connection *conn,
3289 const char *cert_id,
3292 /* this runs after the private key is loaded so no PIN is required */
3294 const char *cert_id;
3297 params.cert_id = cert_id;
3300 if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL",
3301 0, ¶ms, NULL, 1)) {
3302 unsigned long err = ERR_get_error();
3304 wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id"
3305 " '%s' [%s]", cert_id,
3306 ERR_error_string(err, NULL));
3307 if (tls_is_pin_error(err))
3308 return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
3309 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
3312 wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id"
3314 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
3316 *cert = params.cert;
3319 #endif /* OPENSSL_NO_ENGINE */
3322 static int tls_connection_engine_client_cert(struct tls_connection *conn,
3323 const char *cert_id)
3325 #ifndef OPENSSL_NO_ENGINE
3328 if (tls_engine_get_cert(conn, cert_id, &cert))
3331 if (!SSL_use_certificate(conn->ssl, cert)) {
3332 tls_show_errors(MSG_ERROR, __func__,
3333 "SSL_use_certificate failed");
3338 wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> "
3342 #else /* OPENSSL_NO_ENGINE */
3344 #endif /* OPENSSL_NO_ENGINE */
3348 static int tls_connection_engine_ca_cert(struct tls_data *data,
3349 struct tls_connection *conn,
3350 const char *ca_cert_id)
3352 #ifndef OPENSSL_NO_ENGINE
3354 SSL_CTX *ssl_ctx = data->ssl;
3357 if (tls_engine_get_cert(conn, ca_cert_id, &cert))
3360 /* start off the same as tls_connection_ca_cert */
3361 store = X509_STORE_new();
3362 if (store == NULL) {
3363 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
3364 "certificate store", __func__);
3368 SSL_CTX_set_cert_store(ssl_ctx, store);
3369 if (!X509_STORE_add_cert(store, cert)) {
3370 unsigned long err = ERR_peek_error();
3371 tls_show_errors(MSG_WARNING, __func__,
3372 "Failed to add CA certificate from engine "
3373 "to certificate store");
3374 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
3375 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
3376 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert"
3377 " already in hash table error",
3385 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
3386 "to certificate store", __func__);
3387 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
3388 conn->ca_cert_verify = 1;
3392 #else /* OPENSSL_NO_ENGINE */
3394 #endif /* OPENSSL_NO_ENGINE */
3398 static int tls_connection_engine_private_key(struct tls_connection *conn)
3400 #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
3401 if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
3402 tls_show_errors(MSG_ERROR, __func__,
3403 "ENGINE: cannot use private key for TLS");
3406 if (!SSL_check_private_key(conn->ssl)) {
3407 tls_show_errors(MSG_INFO, __func__,
3408 "Private key failed verification");
3412 #else /* OPENSSL_NO_ENGINE */
3413 wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
3414 "engine support was not compiled in");
3416 #endif /* OPENSSL_NO_ENGINE */
3420 static int tls_connection_private_key(struct tls_data *data,
3421 struct tls_connection *conn,
3422 const char *private_key,
3423 const char *private_key_passwd,
3424 const u8 *private_key_blob,
3425 size_t private_key_blob_len)
3427 SSL_CTX *ssl_ctx = data->ssl;
3431 if (private_key == NULL && private_key_blob == NULL)
3434 if (private_key_passwd) {
3435 passwd = os_strdup(private_key_passwd);
3441 SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
3442 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
3445 while (private_key_blob) {
3446 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
3447 (u8 *) private_key_blob,
3448 private_key_blob_len) == 1) {
3449 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
3450 "ASN1(EVP_PKEY_RSA) --> OK");
3455 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
3456 (u8 *) private_key_blob,
3457 private_key_blob_len) == 1) {
3458 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
3459 "ASN1(EVP_PKEY_DSA) --> OK");
3464 if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
3465 (u8 *) private_key_blob,
3466 private_key_blob_len) == 1) {
3467 wpa_printf(MSG_DEBUG, "OpenSSL: "
3468 "SSL_use_RSAPrivateKey_ASN1 --> OK");
3473 if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob,
3474 private_key_blob_len, passwd) == 0) {
3475 wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
3484 while (!ok && private_key) {
3485 #ifndef OPENSSL_NO_STDIO
3486 if (SSL_use_PrivateKey_file(conn->ssl, private_key,
3487 SSL_FILETYPE_ASN1) == 1) {
3488 wpa_printf(MSG_DEBUG, "OpenSSL: "
3489 "SSL_use_PrivateKey_File (DER) --> OK");
3494 if (SSL_use_PrivateKey_file(conn->ssl, private_key,
3495 SSL_FILETYPE_PEM) == 1) {
3496 wpa_printf(MSG_DEBUG, "OpenSSL: "
3497 "SSL_use_PrivateKey_File (PEM) --> OK");
3501 #else /* OPENSSL_NO_STDIO */
3502 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
3504 #endif /* OPENSSL_NO_STDIO */
3506 if (tls_read_pkcs12(data, conn->ssl, private_key, passwd)
3508 wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
3514 if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
3515 wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
3516 "access certificate store --> OK");
3525 tls_show_errors(MSG_INFO, __func__,
3526 "Failed to load private key");
3531 SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
3534 if (!SSL_check_private_key(conn->ssl)) {
3535 tls_show_errors(MSG_INFO, __func__, "Private key failed "
3540 wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
3545 static int tls_global_private_key(struct tls_data *data,
3546 const char *private_key,
3547 const char *private_key_passwd)
3549 SSL_CTX *ssl_ctx = data->ssl;
3552 if (private_key == NULL)
3555 if (private_key_passwd) {
3556 passwd = os_strdup(private_key_passwd);
3562 SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
3563 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
3565 #ifndef OPENSSL_NO_STDIO
3566 SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
3567 SSL_FILETYPE_ASN1) != 1 &&
3568 SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
3569 SSL_FILETYPE_PEM) != 1 &&
3570 #endif /* OPENSSL_NO_STDIO */
3571 tls_read_pkcs12(data, NULL, private_key, passwd)) {
3572 tls_show_errors(MSG_INFO, __func__,
3573 "Failed to load private key");
3580 SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
3582 if (!SSL_CTX_check_private_key(ssl_ctx)) {
3583 tls_show_errors(MSG_INFO, __func__,
3584 "Private key failed verification");
3592 static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
3594 #ifdef OPENSSL_NO_DH
3595 if (dh_file == NULL)
3597 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
3598 "dh_file specified");
3600 #else /* OPENSSL_NO_DH */
3604 /* TODO: add support for dh_blob */
3605 if (dh_file == NULL)
3610 bio = BIO_new_file(dh_file, "r");
3612 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
3613 dh_file, ERR_error_string(ERR_get_error(), NULL));
3616 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
3618 #ifndef OPENSSL_NO_DSA
3619 while (dh == NULL) {
3621 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
3622 " trying to parse as DSA params", dh_file,
3623 ERR_error_string(ERR_get_error(), NULL));
3624 bio = BIO_new_file(dh_file, "r");
3627 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
3630 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
3631 "'%s': %s", dh_file,
3632 ERR_error_string(ERR_get_error(), NULL));
3636 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
3637 dh = DSA_dup_DH(dsa);
3640 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
3641 "params into DH params");
3646 #endif /* !OPENSSL_NO_DSA */
3648 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
3653 if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
3654 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
3656 ERR_error_string(ERR_get_error(), NULL));
3662 #endif /* OPENSSL_NO_DH */
3666 static int tls_global_dh(struct tls_data *data, const char *dh_file)
3668 #ifdef OPENSSL_NO_DH
3669 if (dh_file == NULL)
3671 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
3672 "dh_file specified");
3674 #else /* OPENSSL_NO_DH */
3675 SSL_CTX *ssl_ctx = data->ssl;
3679 /* TODO: add support for dh_blob */
3680 if (dh_file == NULL)
3682 if (ssl_ctx == NULL)
3685 bio = BIO_new_file(dh_file, "r");
3687 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
3688 dh_file, ERR_error_string(ERR_get_error(), NULL));
3691 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
3693 #ifndef OPENSSL_NO_DSA
3694 while (dh == NULL) {
3696 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
3697 " trying to parse as DSA params", dh_file,
3698 ERR_error_string(ERR_get_error(), NULL));
3699 bio = BIO_new_file(dh_file, "r");
3702 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
3705 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
3706 "'%s': %s", dh_file,
3707 ERR_error_string(ERR_get_error(), NULL));
3711 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
3712 dh = DSA_dup_DH(dsa);
3715 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
3716 "params into DH params");
3721 #endif /* !OPENSSL_NO_DSA */
3723 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
3728 if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) {
3729 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
3731 ERR_error_string(ERR_get_error(), NULL));
3737 #endif /* OPENSSL_NO_DH */
3741 int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn,
3742 struct tls_random *keys)
3746 if (conn == NULL || keys == NULL)
3749 #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
3750 if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL)
3753 os_memset(keys, 0, sizeof(*keys));
3754 keys->client_random = ssl->s3->client_random;
3755 keys->client_random_len = SSL3_RANDOM_SIZE;
3756 keys->server_random = ssl->s3->server_random;
3757 keys->server_random_len = SSL3_RANDOM_SIZE;
3762 os_memset(keys, 0, sizeof(*keys));
3763 keys->client_random = conn->client_random;
3764 keys->client_random_len = SSL_get_client_random(
3765 ssl, conn->client_random, sizeof(conn->client_random));
3766 keys->server_random = conn->server_random;
3767 keys->server_random_len = SSL_get_server_random(
3768 ssl, conn->server_random, sizeof(conn->server_random));
3776 static int openssl_get_keyblock_size(SSL *ssl)
3778 #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
3779 const EVP_CIPHER *c;
3783 if (ssl->enc_read_ctx == NULL || ssl->enc_read_ctx->cipher == NULL ||
3784 ssl->read_hash == NULL)
3787 c = ssl->enc_read_ctx->cipher;
3788 #if OPENSSL_VERSION_NUMBER >= 0x00909000L
3789 h = EVP_MD_CTX_md(ssl->read_hash);
3794 md_size = EVP_MD_size(h);
3795 #if OPENSSL_VERSION_NUMBER >= 0x10000000L
3797 md_size = ssl->s3->tmp.new_mac_secret_size;
3802 wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d "
3803 "IV_len=%d", EVP_CIPHER_key_length(c), md_size,
3804 EVP_CIPHER_iv_length(c));
3805 return 2 * (EVP_CIPHER_key_length(c) +
3807 EVP_CIPHER_iv_length(c));
3809 const SSL_CIPHER *ssl_cipher;
3811 const EVP_CIPHER *c;
3814 ssl_cipher = SSL_get_current_cipher(ssl);
3817 cipher = SSL_CIPHER_get_cipher_nid(ssl_cipher);
3818 digest = SSL_CIPHER_get_digest_nid(ssl_cipher);
3819 wpa_printf(MSG_DEBUG, "OpenSSL: cipher nid %d digest nid %d",
3821 if (cipher < 0 || digest < 0)
3823 c = EVP_get_cipherbynid(cipher);
3824 h = EVP_get_digestbynid(digest);
3828 wpa_printf(MSG_DEBUG,
3829 "OpenSSL: keyblock size: key_len=%d MD_size=%d IV_len=%d",
3830 EVP_CIPHER_key_length(c), EVP_MD_size(h),
3831 EVP_CIPHER_iv_length(c));
3832 return 2 * (EVP_CIPHER_key_length(c) + EVP_MD_size(h) +
3833 EVP_CIPHER_iv_length(c));
3836 #endif /* CONFIG_FIPS */
3839 static int openssl_tls_prf(struct tls_connection *conn,
3840 const char *label, int server_random_first,
3841 int skip_keyblock, u8 *out, size_t out_len)
3844 wpa_printf(MSG_ERROR, "OpenSSL: TLS keys cannot be exported in FIPS "
3847 #else /* CONFIG_FIPS */
3848 #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
3858 * TLS library did not support key generation, so get the needed TLS
3859 * session parameters and use an internal implementation of TLS PRF to
3866 if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL ||
3867 ssl->session->master_key_length <= 0)
3869 ver = SSL_get_version(ssl);
3871 if (skip_keyblock) {
3872 skip = openssl_get_keyblock_size(ssl);
3875 tmp_out = os_malloc(skip + out_len);
3881 rnd = os_malloc(2 * SSL3_RANDOM_SIZE);
3887 if (server_random_first) {
3888 os_memcpy(rnd, ssl->s3->server_random, SSL3_RANDOM_SIZE);
3889 os_memcpy(rnd + SSL3_RANDOM_SIZE, ssl->s3->client_random,
3892 os_memcpy(rnd, ssl->s3->client_random, SSL3_RANDOM_SIZE);
3893 os_memcpy(rnd + SSL3_RANDOM_SIZE, ssl->s3->server_random,
3897 if (os_strcmp(ver, "TLSv1.2") == 0) {
3898 tls_prf_sha256(ssl->session->master_key,
3899 ssl->session->master_key_length,
3900 label, rnd, 2 * SSL3_RANDOM_SIZE,
3901 _out, skip + out_len);
3903 } else if (tls_prf_sha1_md5(ssl->session->master_key,
3904 ssl->session->master_key_length,
3905 label, rnd, 2 * SSL3_RANDOM_SIZE,
3906 _out, skip + out_len) == 0) {
3910 if (ret == 0 && skip_keyblock)
3911 os_memcpy(out, _out + skip, out_len);
3912 bin_clear_free(tmp_out, skip);
3923 unsigned char client_random[SSL3_RANDOM_SIZE];
3924 unsigned char server_random[SSL3_RANDOM_SIZE];
3925 unsigned char master_key[64];
3926 size_t master_key_len;
3930 * TLS library did not support key generation, so get the needed TLS
3931 * session parameters and use an internal implementation of TLS PRF to
3940 ver = SSL_get_version(ssl);
3941 sess = SSL_get_session(ssl);
3945 if (skip_keyblock) {
3946 skip = openssl_get_keyblock_size(ssl);
3949 tmp_out = os_malloc(skip + out_len);
3955 rnd = os_malloc(2 * SSL3_RANDOM_SIZE);
3961 SSL_get_client_random(ssl, client_random, sizeof(client_random));
3962 SSL_get_server_random(ssl, server_random, sizeof(server_random));
3963 master_key_len = SSL_SESSION_get_master_key(sess, master_key,
3964 sizeof(master_key));
3966 if (server_random_first) {
3967 os_memcpy(rnd, server_random, SSL3_RANDOM_SIZE);
3968 os_memcpy(rnd + SSL3_RANDOM_SIZE, client_random,
3971 os_memcpy(rnd, client_random, SSL3_RANDOM_SIZE);
3972 os_memcpy(rnd + SSL3_RANDOM_SIZE, server_random,
3976 if (os_strcmp(ver, "TLSv1.2") == 0) {
3977 tls_prf_sha256(master_key, master_key_len,
3978 label, rnd, 2 * SSL3_RANDOM_SIZE,
3979 _out, skip + out_len);
3981 } else if (tls_prf_sha1_md5(master_key, master_key_len,
3982 label, rnd, 2 * SSL3_RANDOM_SIZE,
3983 _out, skip + out_len) == 0) {
3986 os_memset(master_key, 0, sizeof(master_key));
3988 if (ret == 0 && skip_keyblock)
3989 os_memcpy(out, _out + skip, out_len);
3990 bin_clear_free(tmp_out, skip);
3994 #endif /* CONFIG_FIPS */
3998 int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
3999 const char *label, int server_random_first,
4000 int skip_keyblock, u8 *out, size_t out_len)
4002 #if OPENSSL_VERSION_NUMBER >= 0x10001000L
4006 if (server_random_first || skip_keyblock)
4007 return openssl_tls_prf(conn, label,
4008 server_random_first, skip_keyblock,
4011 if (SSL_export_keying_material(ssl, out, out_len, label,
4012 os_strlen(label), NULL, 0, 0) == 1) {
4013 wpa_printf(MSG_DEBUG, "OpenSSL: Using internal PRF");
4017 return openssl_tls_prf(conn, label, server_random_first,
4018 skip_keyblock, out, out_len);
4022 static struct wpabuf *
4023 openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data,
4027 struct wpabuf *out_data;
4030 * Give TLS handshake data from the server (if available) to OpenSSL
4033 if (in_data && wpabuf_len(in_data) > 0 &&
4034 BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data))
4036 tls_show_errors(MSG_INFO, __func__,
4037 "Handshake failed - BIO_write");
4041 /* Initiate TLS handshake or continue the existing handshake */
4043 res = SSL_accept(conn->ssl);
4045 res = SSL_connect(conn->ssl);
4047 int err = SSL_get_error(conn->ssl, res);
4048 if (err == SSL_ERROR_WANT_READ)
4049 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
4051 else if (err == SSL_ERROR_WANT_WRITE)
4052 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
4055 tls_show_errors(MSG_INFO, __func__, "SSL_connect");
4060 /* Get the TLS handshake data to be sent to the server */
4061 res = BIO_ctrl_pending(conn->ssl_out);
4062 wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
4063 out_data = wpabuf_alloc(res);
4064 if (out_data == NULL) {
4065 wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
4066 "handshake output (%d bytes)", res);
4067 if (BIO_reset(conn->ssl_out) < 0) {
4068 tls_show_errors(MSG_INFO, __func__,
4069 "BIO_reset failed");
4073 res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data),
4076 tls_show_errors(MSG_INFO, __func__,
4077 "Handshake failed - BIO_read");
4078 if (BIO_reset(conn->ssl_out) < 0) {
4079 tls_show_errors(MSG_INFO, __func__,
4080 "BIO_reset failed");
4082 wpabuf_free(out_data);
4085 wpabuf_put(out_data, res);
4091 static struct wpabuf *
4092 openssl_get_appl_data(struct tls_connection *conn, size_t max_len)
4094 struct wpabuf *appl_data;
4097 appl_data = wpabuf_alloc(max_len + 100);
4098 if (appl_data == NULL)
4101 res = SSL_read(conn->ssl, wpabuf_mhead(appl_data),
4102 wpabuf_size(appl_data));
4104 int err = SSL_get_error(conn->ssl, res);
4105 if (err == SSL_ERROR_WANT_READ ||
4106 err == SSL_ERROR_WANT_WRITE) {
4107 wpa_printf(MSG_DEBUG, "SSL: No Application Data "
4110 tls_show_errors(MSG_INFO, __func__,
4111 "Failed to read possible "
4112 "Application Data");
4114 wpabuf_free(appl_data);
4118 wpabuf_put(appl_data, res);
4119 wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished "
4120 "message", appl_data);
4126 static struct wpabuf *
4127 openssl_connection_handshake(struct tls_connection *conn,
4128 const struct wpabuf *in_data,
4129 struct wpabuf **appl_data, int server)
4131 struct wpabuf *out_data;
4136 out_data = openssl_handshake(conn, in_data, server);
4137 if (out_data == NULL)
4139 if (conn->invalid_hb_used) {
4140 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
4141 wpabuf_free(out_data);
4145 if (SSL_is_init_finished(conn->ssl)) {
4146 wpa_printf(MSG_DEBUG,
4147 "OpenSSL: Handshake finished - resumed=%d",
4148 tls_connection_resumed(conn->ssl_ctx, conn));
4149 if (appl_data && in_data)
4150 *appl_data = openssl_get_appl_data(conn,
4151 wpabuf_len(in_data));
4154 if (conn->invalid_hb_used) {
4155 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
4157 wpabuf_free(*appl_data);
4160 wpabuf_free(out_data);
4169 tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
4170 const struct wpabuf *in_data,
4171 struct wpabuf **appl_data)
4173 return openssl_connection_handshake(conn, in_data, appl_data, 0);
4177 struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
4178 struct tls_connection *conn,
4179 const struct wpabuf *in_data,
4180 struct wpabuf **appl_data)
4182 return openssl_connection_handshake(conn, in_data, appl_data, 1);
4186 struct wpabuf * tls_connection_encrypt(void *tls_ctx,
4187 struct tls_connection *conn,
4188 const struct wpabuf *in_data)
4196 /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
4197 if ((res = BIO_reset(conn->ssl_in)) < 0 ||
4198 (res = BIO_reset(conn->ssl_out)) < 0) {
4199 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
4202 res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data));
4204 tls_show_errors(MSG_INFO, __func__,
4205 "Encryption failed - SSL_write");
4209 /* Read encrypted data to be sent to the server */
4210 buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
4213 res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf));
4215 tls_show_errors(MSG_INFO, __func__,
4216 "Encryption failed - BIO_read");
4220 wpabuf_put(buf, res);
4226 struct wpabuf * tls_connection_decrypt(void *tls_ctx,
4227 struct tls_connection *conn,
4228 const struct wpabuf *in_data)
4233 /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
4234 res = BIO_write(conn->ssl_in, wpabuf_head(in_data),
4235 wpabuf_len(in_data));
4237 tls_show_errors(MSG_INFO, __func__,
4238 "Decryption failed - BIO_write");
4241 if (BIO_reset(conn->ssl_out) < 0) {
4242 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
4246 /* Read decrypted data for further processing */
4248 * Even though we try to disable TLS compression, it is possible that
4249 * this cannot be done with all TLS libraries. Add extra buffer space
4250 * to handle the possibility of the decrypted data being longer than
4253 buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
4256 res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
4258 tls_show_errors(MSG_INFO, __func__,
4259 "Decryption failed - SSL_read");
4263 wpabuf_put(buf, res);
4265 if (conn->invalid_hb_used) {
4266 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
4275 int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
4277 #if OPENSSL_VERSION_NUMBER >= 0x10001000L
4278 return conn ? SSL_cache_hit(conn->ssl) : 0;
4280 return conn ? conn->ssl->hit : 0;
4285 int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
4288 char buf[100], *pos, *end;
4292 if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
4297 end = pos + sizeof(buf);
4300 while (*c != TLS_CIPHER_NONE) {
4304 case TLS_CIPHER_RC4_SHA:
4307 case TLS_CIPHER_AES128_SHA:
4308 suite = "AES128-SHA";
4310 case TLS_CIPHER_RSA_DHE_AES128_SHA:
4311 suite = "DHE-RSA-AES128-SHA";
4313 case TLS_CIPHER_ANON_DH_AES128_SHA:
4314 suite = "ADH-AES128-SHA";
4317 wpa_printf(MSG_DEBUG, "TLS: Unsupported "
4318 "cipher selection: %d", *c);
4321 ret = os_snprintf(pos, end - pos, ":%s", suite);
4322 if (os_snprintf_error(end - pos, ret))
4329 wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
4331 #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
4332 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
4333 if (os_strstr(buf, ":ADH-")) {
4335 * Need to drop to security level 0 to allow anonymous
4336 * cipher suites for EAP-FAST.
4338 SSL_set_security_level(conn->ssl, 0);
4339 } else if (SSL_get_security_level(conn->ssl) == 0) {
4340 /* Force at least security level 1 */
4341 SSL_set_security_level(conn->ssl, 1);
4343 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4346 if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
4347 tls_show_errors(MSG_INFO, __func__,
4348 "Cipher suite configuration failed");
4356 int tls_get_version(void *ssl_ctx, struct tls_connection *conn,
4357 char *buf, size_t buflen)
4360 if (conn == NULL || conn->ssl == NULL)
4363 name = SSL_get_version(conn->ssl);
4367 os_strlcpy(buf, name, buflen);
4372 int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
4373 char *buf, size_t buflen)
4376 if (conn == NULL || conn->ssl == NULL)
4379 name = SSL_get_cipher(conn->ssl);
4383 os_strlcpy(buf, name, buflen);
4388 int tls_connection_enable_workaround(void *ssl_ctx,
4389 struct tls_connection *conn)
4391 SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
4397 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
4398 /* ClientHello TLS extensions require a patch to openssl, so this function is
4399 * commented out unless explicitly needed for EAP-FAST in order to be able to
4400 * build this file with unmodified openssl. */
4401 int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
4402 int ext_type, const u8 *data,
4405 if (conn == NULL || conn->ssl == NULL || ext_type != 35)
4408 if (SSL_set_session_ticket_ext(conn->ssl, (void *) data,
4414 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4417 int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
4421 return conn->failed;
4425 int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
4429 return conn->read_alerts;
4433 int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
4437 return conn->write_alerts;
4443 static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp)
4445 #ifndef CONFIG_NO_STDOUT_DEBUG
4451 if (wpa_debug_level > MSG_DEBUG)
4454 out = BIO_new(BIO_s_mem());
4458 OCSP_RESPONSE_print(out, rsp, 0);
4459 rlen = BIO_ctrl_pending(out);
4460 txt = os_malloc(rlen + 1);
4466 res = BIO_read(out, txt, rlen);
4469 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt);
4473 #endif /* CONFIG_NO_STDOUT_DEBUG */
4477 static void debug_print_cert(X509 *cert, const char *title)
4479 #ifndef CONFIG_NO_STDOUT_DEBUG
4485 if (wpa_debug_level > MSG_DEBUG)
4488 out = BIO_new(BIO_s_mem());
4492 X509_print(out, cert);
4493 rlen = BIO_ctrl_pending(out);
4494 txt = os_malloc(rlen + 1);
4500 res = BIO_read(out, txt, rlen);
4503 wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt);
4508 #endif /* CONFIG_NO_STDOUT_DEBUG */
4512 static int ocsp_resp_cb(SSL *s, void *arg)
4514 struct tls_connection *conn = arg;
4515 const unsigned char *p;
4516 int len, status, reason;
4518 OCSP_BASICRESP *basic;
4520 ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update;
4522 STACK_OF(X509) *certs = NULL;
4524 len = SSL_get_tlsext_status_ocsp_resp(s, &p);
4526 wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received");
4527 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
4530 wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len);
4532 rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
4534 wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response");
4538 ocsp_debug_print_resp(rsp);
4540 status = OCSP_response_status(rsp);
4541 if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
4542 wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)",
4543 status, OCSP_response_status_str(status));
4547 basic = OCSP_response_get1_basic(rsp);
4549 wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse");
4553 store = SSL_CTX_get_cert_store(conn->ssl_ctx);
4554 if (conn->peer_issuer) {
4555 debug_print_cert(conn->peer_issuer, "Add OCSP issuer");
4557 if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) {
4558 tls_show_errors(MSG_INFO, __func__,
4559 "OpenSSL: Could not add issuer to certificate store");
4561 certs = sk_X509_new_null();
4564 cert = X509_dup(conn->peer_issuer);
4565 if (cert && !sk_X509_push(certs, cert)) {
4568 "OpenSSL: Could not add issuer to OCSP responder trust store");
4570 sk_X509_free(certs);
4573 if (certs && conn->peer_issuer_issuer) {
4574 cert = X509_dup(conn->peer_issuer_issuer);
4575 if (cert && !sk_X509_push(certs, cert)) {
4578 "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
4585 status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER);
4586 sk_X509_pop_free(certs, X509_free);
4588 tls_show_errors(MSG_INFO, __func__,
4589 "OpenSSL: OCSP response failed verification");
4590 OCSP_BASICRESP_free(basic);
4591 OCSP_RESPONSE_free(rsp);
4595 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded");
4597 if (!conn->peer_cert) {
4598 wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check");
4599 OCSP_BASICRESP_free(basic);
4600 OCSP_RESPONSE_free(rsp);
4604 if (!conn->peer_issuer) {
4605 wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check");
4606 OCSP_BASICRESP_free(basic);
4607 OCSP_RESPONSE_free(rsp);
4611 id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer);
4613 wpa_printf(MSG_DEBUG, "OpenSSL: Could not create OCSP certificate identifier");
4614 OCSP_BASICRESP_free(basic);
4615 OCSP_RESPONSE_free(rsp);
4619 if (!OCSP_resp_find_status(basic, id, &status, &reason, &produced_at,
4620 &this_update, &next_update)) {
4621 wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s",
4622 (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" :
4623 " (OCSP not required)");
4624 OCSP_BASICRESP_free(basic);
4625 OCSP_RESPONSE_free(rsp);
4626 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
4629 if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) {
4630 tls_show_errors(MSG_INFO, __func__,
4631 "OpenSSL: OCSP status times invalid");
4632 OCSP_BASICRESP_free(basic);
4633 OCSP_RESPONSE_free(rsp);
4637 OCSP_BASICRESP_free(basic);
4638 OCSP_RESPONSE_free(rsp);
4640 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s",
4641 OCSP_cert_status_str(status));
4643 if (status == V_OCSP_CERTSTATUS_GOOD)
4645 if (status == V_OCSP_CERTSTATUS_REVOKED)
4647 if (conn->flags & TLS_CONN_REQUIRE_OCSP) {
4648 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required");
4651 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue");
4656 static int ocsp_status_cb(SSL *s, void *arg)
4662 if (tls_global->ocsp_stapling_response == NULL) {
4663 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured");
4664 return SSL_TLSEXT_ERR_OK;
4667 resp = os_readfile(tls_global->ocsp_stapling_response, &len);
4669 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file");
4670 /* TODO: Build OCSPResponse with responseStatus = internalError
4672 return SSL_TLSEXT_ERR_OK;
4674 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response");
4675 tmp = OPENSSL_malloc(len);
4678 return SSL_TLSEXT_ERR_ALERT_FATAL;
4681 os_memcpy(tmp, resp, len);
4683 SSL_set_tlsext_status_ocsp_resp(s, tmp, len);
4685 return SSL_TLSEXT_ERR_OK;
4688 #endif /* HAVE_OCSP */
4691 int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
4692 const struct tls_connection_params *params)
4694 struct tls_data *data = tls_ctx;
4698 const char *key_id = params->key_id;
4699 const char *cert_id = params->cert_id;
4700 const char *ca_cert_id = params->ca_cert_id;
4701 const char *engine_id = params->engine ? params->engine_id : NULL;
4707 * If the engine isn't explicitly configured, and any of the
4708 * cert/key fields are actually PKCS#11 URIs, then automatically
4709 * use the PKCS#11 ENGINE.
4711 if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0)
4714 if (!key_id && params->private_key && can_pkcs11 &&
4715 os_strncmp(params->private_key, "pkcs11:", 7) == 0) {
4717 key_id = params->private_key;
4720 if (!cert_id && params->client_cert && can_pkcs11 &&
4721 os_strncmp(params->client_cert, "pkcs11:", 7) == 0) {
4723 cert_id = params->client_cert;
4726 if (!ca_cert_id && params->ca_cert && can_pkcs11 &&
4727 os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) {
4729 ca_cert_id = params->ca_cert;
4732 /* If we need to automatically enable the PKCS#11 ENGINE, do so. */
4733 if (can_pkcs11 == 2 && !engine_id)
4734 engine_id = "pkcs11";
4736 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
4737 #if OPENSSL_VERSION_NUMBER < 0x10100000L
4738 if (params->flags & TLS_CONN_EAP_FAST) {
4739 wpa_printf(MSG_DEBUG,
4740 "OpenSSL: Use TLSv1_method() for EAP-FAST");
4741 if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) {
4742 tls_show_errors(MSG_INFO, __func__,
4743 "Failed to set TLSv1_method() for EAP-FAST");
4748 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4750 while ((err = ERR_get_error())) {
4751 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
4752 __func__, ERR_error_string(err, NULL));
4756 wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
4757 ret = tls_engine_init(conn, engine_id, params->pin,
4758 key_id, cert_id, ca_cert_id);
4762 if (tls_connection_set_subject_match(conn,
4763 params->subject_match,
4764 params->altsubject_match,
4765 params->suffix_match,
4766 params->domain_match))
4769 if (engine_id && ca_cert_id) {
4770 if (tls_connection_engine_ca_cert(data, conn, ca_cert_id))
4771 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
4772 } else if (tls_connection_ca_cert(data, conn, params->ca_cert,
4773 params->ca_cert_blob,
4774 params->ca_cert_blob_len,
4778 if (engine_id && cert_id) {
4779 if (tls_connection_engine_client_cert(conn, cert_id))
4780 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
4781 } else if (tls_connection_client_cert(conn, params->client_cert,
4782 params->client_cert_blob,
4783 params->client_cert_blob_len))
4786 if (engine_id && key_id) {
4787 wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
4788 if (tls_connection_engine_private_key(conn))
4789 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
4790 } else if (tls_connection_private_key(data, conn,
4791 params->private_key,
4792 params->private_key_passwd,
4793 params->private_key_blob,
4794 params->private_key_blob_len)) {
4795 wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
4796 params->private_key);
4800 if (tls_connection_dh(conn, params->dh_file)) {
4801 wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
4806 if (params->openssl_ciphers &&
4807 SSL_set_cipher_list(conn->ssl, params->openssl_ciphers) != 1) {
4808 wpa_printf(MSG_INFO,
4809 "OpenSSL: Failed to set cipher string '%s'",
4810 params->openssl_ciphers);
4814 tls_set_conn_flags(conn->ssl, params->flags);
4816 #ifdef OPENSSL_IS_BORINGSSL
4817 if (params->flags & TLS_CONN_REQUEST_OCSP) {
4818 SSL_enable_ocsp_stapling(conn->ssl);
4820 #else /* OPENSSL_IS_BORINGSSL */
4822 if (params->flags & TLS_CONN_REQUEST_OCSP) {
4823 SSL_CTX *ssl_ctx = data->ssl;
4824 SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp);
4825 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb);
4826 SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn);
4828 #else /* HAVE_OCSP */
4829 if (params->flags & TLS_CONN_REQUIRE_OCSP) {
4830 wpa_printf(MSG_INFO,
4831 "OpenSSL: No OCSP support included - reject configuration");
4834 if (params->flags & TLS_CONN_REQUEST_OCSP) {
4835 wpa_printf(MSG_DEBUG,
4836 "OpenSSL: No OCSP support included - allow optional OCSP case to continue");
4838 #endif /* HAVE_OCSP */
4839 #endif /* OPENSSL_IS_BORINGSSL */
4841 conn->flags = params->flags;
4843 tls_get_errors(data);
4849 int tls_global_set_params(void *tls_ctx,
4850 const struct tls_connection_params *params)
4852 struct tls_data *data = tls_ctx;
4853 SSL_CTX *ssl_ctx = data->ssl;
4856 while ((err = ERR_get_error())) {
4857 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
4858 __func__, ERR_error_string(err, NULL));
4861 if (tls_global_ca_cert(data, params->ca_cert) ||
4862 tls_global_client_cert(data, params->client_cert) ||
4863 tls_global_private_key(data, params->private_key,
4864 params->private_key_passwd) ||
4865 tls_global_dh(data, params->dh_file)) {
4866 wpa_printf(MSG_INFO, "TLS: Failed to set global parameters");
4870 if (params->openssl_ciphers &&
4871 SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) {
4872 wpa_printf(MSG_INFO,
4873 "OpenSSL: Failed to set cipher string '%s'",
4874 params->openssl_ciphers);
4878 #ifdef SSL_OP_NO_TICKET
4879 if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
4880 SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET);
4881 #ifdef SSL_CTX_clear_options
4883 SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET);
4884 #endif /* SSL_clear_options */
4885 #endif /* SSL_OP_NO_TICKET */
4888 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb);
4889 SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx);
4890 os_free(tls_global->ocsp_stapling_response);
4891 if (params->ocsp_stapling_response)
4892 tls_global->ocsp_stapling_response =
4893 os_strdup(params->ocsp_stapling_response);
4895 tls_global->ocsp_stapling_response = NULL;
4896 #endif /* HAVE_OCSP */
4902 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
4903 /* Pre-shared secred requires a patch to openssl, so this function is
4904 * commented out unless explicitly needed for EAP-FAST in order to be able to
4905 * build this file with unmodified openssl. */
4907 #ifdef OPENSSL_IS_BORINGSSL
4908 static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
4909 STACK_OF(SSL_CIPHER) *peer_ciphers,
4910 const SSL_CIPHER **cipher, void *arg)
4911 #else /* OPENSSL_IS_BORINGSSL */
4912 static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
4913 STACK_OF(SSL_CIPHER) *peer_ciphers,
4914 SSL_CIPHER **cipher, void *arg)
4915 #endif /* OPENSSL_IS_BORINGSSL */
4917 struct tls_connection *conn = arg;
4920 #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
4921 if (conn == NULL || conn->session_ticket_cb == NULL)
4924 ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
4925 conn->session_ticket,
4926 conn->session_ticket_len,
4927 s->s3->client_random,
4928 s->s3->server_random, secret);
4930 unsigned char client_random[SSL3_RANDOM_SIZE];
4931 unsigned char server_random[SSL3_RANDOM_SIZE];
4933 if (conn == NULL || conn->session_ticket_cb == NULL)
4936 SSL_get_client_random(s, client_random, sizeof(client_random));
4937 SSL_get_server_random(s, server_random, sizeof(server_random));
4939 ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
4940 conn->session_ticket,
4941 conn->session_ticket_len,
4943 server_random, secret);
4946 os_free(conn->session_ticket);
4947 conn->session_ticket = NULL;
4952 *secret_len = SSL_MAX_MASTER_KEY_LENGTH;
4957 static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data,
4960 struct tls_connection *conn = arg;
4962 if (conn == NULL || conn->session_ticket_cb == NULL)
4965 wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len);
4967 os_free(conn->session_ticket);
4968 conn->session_ticket = NULL;
4970 wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
4971 "extension", data, len);
4973 conn->session_ticket = os_malloc(len);
4974 if (conn->session_ticket == NULL)
4977 os_memcpy(conn->session_ticket, data, len);
4978 conn->session_ticket_len = len;
4982 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4985 int tls_connection_set_session_ticket_cb(void *tls_ctx,
4986 struct tls_connection *conn,
4987 tls_session_ticket_cb cb,
4990 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
4991 conn->session_ticket_cb = cb;
4992 conn->session_ticket_cb_ctx = ctx;
4995 if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
4998 SSL_set_session_ticket_ext_cb(conn->ssl,
4999 tls_session_ticket_ext_cb, conn);
5001 if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
5003 SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL);
5007 #else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
5009 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
5013 int tls_get_library_version(char *buf, size_t buf_len)
5015 #if OPENSSL_VERSION_NUMBER >= 0x10100000L
5016 return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
5017 OPENSSL_VERSION_TEXT,
5018 OpenSSL_version(OPENSSL_VERSION));
5020 return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
5021 OPENSSL_VERSION_TEXT,
5022 SSLeay_version(SSLEAY_VERSION));
5027 void tls_connection_set_success_data(struct tls_connection *conn,
5028 struct wpabuf *data)
5033 if (tls_ex_idx_session < 0)
5035 sess = SSL_get_session(conn->ssl);
5038 old = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
5040 wpa_printf(MSG_DEBUG, "OpenSSL: Replacing old success data %p",
5044 if (SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1)
5047 wpa_printf(MSG_DEBUG, "OpenSSL: Stored success data %p", data);
5048 conn->success_data = 1;
5052 wpa_printf(MSG_INFO, "OpenSSL: Failed to store success data");
5057 void tls_connection_set_success_data_resumed(struct tls_connection *conn)
5059 wpa_printf(MSG_DEBUG,
5060 "OpenSSL: Success data accepted for resumed session");
5061 conn->success_data = 1;
5065 const struct wpabuf *
5066 tls_connection_get_success_data(struct tls_connection *conn)
5070 if (tls_ex_idx_session < 0 ||
5071 !(sess = SSL_get_session(conn->ssl)))
5073 return SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
5077 void tls_connection_remove_session(struct tls_connection *conn)
5081 sess = SSL_get_session(conn->ssl);
5085 if (SSL_CTX_remove_session(conn->ssl_ctx, sess) != 1)
5086 wpa_printf(MSG_DEBUG,
5087 "OpenSSL: Session was not cached");
5089 wpa_printf(MSG_DEBUG,
5090 "OpenSSL: Removed cached session to disable session resumption");