2 * SSL/TLS interface functions for OpenSSL
3 * Copyright (c) 2004-2013, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
11 #ifndef CONFIG_SMARTCARD
12 #ifndef OPENSSL_NO_ENGINE
14 #define OPENSSL_NO_ENGINE
19 #include <openssl/ssl.h>
20 #include <openssl/err.h>
21 #include <openssl/pkcs12.h>
22 #include <openssl/x509v3.h>
23 #ifndef OPENSSL_NO_ENGINE
24 #include <openssl/engine.h>
25 #endif /* OPENSSL_NO_ENGINE */
32 #if OPENSSL_VERSION_NUMBER < 0x10000000L
33 /* ERR_remove_thread_state replaces ERR_remove_state and the latter is
34 * deprecated. However, OpenSSL 0.9.8 doesn't include
35 * ERR_remove_thread_state. */
36 #define ERR_remove_thread_state(tid) ERR_remove_state(0)
39 #if defined(OPENSSL_IS_BORINGSSL)
40 /* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */
41 typedef size_t stack_index_t
;
43 typedef int stack_index_t
;
46 #ifdef SSL_set_tlsext_status_type
47 #ifndef OPENSSL_NO_TLSEXT
49 #include <openssl/ocsp.h>
50 #endif /* OPENSSL_NO_TLSEXT */
51 #endif /* SSL_set_tlsext_status_type */
54 #include <openssl/pem.h>
55 #include <keystore/keystore_get.h>
57 static BIO
* BIO_from_keystore(const char *key
)
60 uint8_t *value
= NULL
;
61 int length
= keystore_get(key
, strlen(key
), &value
);
62 if (length
!= -1 && (bio
= BIO_new(BIO_s_mem())) != NULL
)
63 BIO_write(bio
, value
, length
);
69 static int tls_openssl_ref_count
= 0;
72 void (*event_cb
)(void *ctx
, enum tls_event ev
,
73 union tls_event_data
*data
);
76 char *ocsp_stapling_response
;
79 static struct tls_context
*tls_global
= NULL
;
82 struct tls_connection
{
83 struct tls_context
*context
;
86 BIO
*ssl_in
, *ssl_out
;
87 #ifndef OPENSSL_NO_ENGINE
88 ENGINE
*engine
; /* functional reference to the engine */
89 EVP_PKEY
*private_key
; /* the private key if using engine */
90 #endif /* OPENSSL_NO_ENGINE */
91 char *subject_match
, *altsubject_match
, *suffix_match
, *domain_match
;
92 int read_alerts
, write_alerts
, failed
;
94 tls_session_ticket_cb session_ticket_cb
;
95 void *session_ticket_cb_ctx
;
97 /* SessionTicket received from OpenSSL hello_extension_cb (server) */
99 size_t session_ticket_len
;
101 unsigned int ca_cert_verify
:1;
102 unsigned int cert_probe
:1;
103 unsigned int server_cert_only
:1;
104 unsigned int invalid_hb_used
:1;
106 u8 srv_cert_hash
[32];
112 X509
*peer_issuer_issuer
;
116 static struct tls_context
* tls_context_new(const struct tls_config
*conf
)
118 struct tls_context
*context
= os_zalloc(sizeof(*context
));
122 context
->event_cb
= conf
->event_cb
;
123 context
->cb_ctx
= conf
->cb_ctx
;
124 context
->cert_in_cb
= conf
->cert_in_cb
;
130 #ifdef CONFIG_NO_STDOUT_DEBUG
132 static void _tls_show_errors(void)
136 while ((err
= ERR_get_error())) {
137 /* Just ignore the errors, since stdout is disabled */
140 #define tls_show_errors(l, f, t) _tls_show_errors()
142 #else /* CONFIG_NO_STDOUT_DEBUG */
144 static void tls_show_errors(int level
, const char *func
, const char *txt
)
148 wpa_printf(level
, "OpenSSL: %s - %s %s",
149 func
, txt
, ERR_error_string(ERR_get_error(), NULL
));
151 while ((err
= ERR_get_error())) {
152 wpa_printf(MSG_INFO
, "OpenSSL: pending error: %s",
153 ERR_error_string(err
, NULL
));
157 #endif /* CONFIG_NO_STDOUT_DEBUG */
160 #ifdef CONFIG_NATIVE_WINDOWS
162 /* Windows CryptoAPI and access to certificate stores */
163 #include <wincrypt.h>
165 #ifdef __MINGW32_VERSION
167 * MinGW does not yet include all the needed definitions for CryptoAPI, so
168 * define here whatever extra is needed.
170 #define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
171 #define CERT_STORE_READONLY_FLAG 0x00008000
172 #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
174 #endif /* __MINGW32_VERSION */
177 struct cryptoapi_rsa_data
{
178 const CERT_CONTEXT
*cert
;
179 HCRYPTPROV crypt_prov
;
181 BOOL free_crypt_prov
;
185 static void cryptoapi_error(const char *msg
)
187 wpa_printf(MSG_INFO
, "CryptoAPI: %s; err=%u",
188 msg
, (unsigned int) GetLastError());
192 static int cryptoapi_rsa_pub_enc(int flen
, const unsigned char *from
,
193 unsigned char *to
, RSA
*rsa
, int padding
)
195 wpa_printf(MSG_DEBUG
, "%s - not implemented", __func__
);
200 static int cryptoapi_rsa_pub_dec(int flen
, const unsigned char *from
,
201 unsigned char *to
, RSA
*rsa
, int padding
)
203 wpa_printf(MSG_DEBUG
, "%s - not implemented", __func__
);
208 static int cryptoapi_rsa_priv_enc(int flen
, const unsigned char *from
,
209 unsigned char *to
, RSA
*rsa
, int padding
)
211 struct cryptoapi_rsa_data
*priv
=
212 (struct cryptoapi_rsa_data
*) rsa
->meth
->app_data
;
214 DWORD hash_size
, len
, i
;
215 unsigned char *buf
= NULL
;
219 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT
,
220 ERR_R_PASSED_NULL_PARAMETER
);
224 if (padding
!= RSA_PKCS1_PADDING
) {
225 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT
,
226 RSA_R_UNKNOWN_PADDING_TYPE
);
230 if (flen
!= 16 /* MD5 */ + 20 /* SHA-1 */) {
231 wpa_printf(MSG_INFO
, "%s - only MD5-SHA1 hash supported",
233 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT
,
234 RSA_R_INVALID_MESSAGE_LENGTH
);
238 if (!CryptCreateHash(priv
->crypt_prov
, CALG_SSL3_SHAMD5
, 0, 0, &hash
))
240 cryptoapi_error("CryptCreateHash failed");
244 len
= sizeof(hash_size
);
245 if (!CryptGetHashParam(hash
, HP_HASHSIZE
, (BYTE
*) &hash_size
, &len
,
247 cryptoapi_error("CryptGetHashParam failed");
251 if ((int) hash_size
!= flen
) {
252 wpa_printf(MSG_INFO
, "CryptoAPI: Invalid hash size (%u != %d)",
253 (unsigned) hash_size
, flen
);
254 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT
,
255 RSA_R_INVALID_MESSAGE_LENGTH
);
258 if (!CryptSetHashParam(hash
, HP_HASHVAL
, (BYTE
* ) from
, 0)) {
259 cryptoapi_error("CryptSetHashParam failed");
264 buf
= os_malloc(len
);
266 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT
, ERR_R_MALLOC_FAILURE
);
270 if (!CryptSignHash(hash
, priv
->key_spec
, NULL
, 0, buf
, &len
)) {
271 cryptoapi_error("CryptSignHash failed");
275 for (i
= 0; i
< len
; i
++)
276 to
[i
] = buf
[len
- i
- 1];
281 CryptDestroyHash(hash
);
287 static int cryptoapi_rsa_priv_dec(int flen
, const unsigned char *from
,
288 unsigned char *to
, RSA
*rsa
, int padding
)
290 wpa_printf(MSG_DEBUG
, "%s - not implemented", __func__
);
295 static void cryptoapi_free_data(struct cryptoapi_rsa_data
*priv
)
299 if (priv
->crypt_prov
&& priv
->free_crypt_prov
)
300 CryptReleaseContext(priv
->crypt_prov
, 0);
302 CertFreeCertificateContext(priv
->cert
);
307 static int cryptoapi_finish(RSA
*rsa
)
309 cryptoapi_free_data((struct cryptoapi_rsa_data
*) rsa
->meth
->app_data
);
310 os_free((void *) rsa
->meth
);
316 static const CERT_CONTEXT
* cryptoapi_find_cert(const char *name
, DWORD store
)
319 const CERT_CONTEXT
*ret
= NULL
;
321 cs
= CertOpenStore((LPCSTR
) CERT_STORE_PROV_SYSTEM
, 0, 0,
322 store
| CERT_STORE_OPEN_EXISTING_FLAG
|
323 CERT_STORE_READONLY_FLAG
, L
"MY");
325 cryptoapi_error("Failed to open 'My system store'");
329 if (strncmp(name
, "cert://", 7) == 0) {
330 unsigned short wbuf
[255];
331 MultiByteToWideChar(CP_ACP
, 0, name
+ 7, -1, wbuf
, 255);
332 ret
= CertFindCertificateInStore(cs
, X509_ASN_ENCODING
|
334 0, CERT_FIND_SUBJECT_STR
,
336 } else if (strncmp(name
, "hash://", 7) == 0) {
337 CRYPT_HASH_BLOB blob
;
339 const char *hash
= name
+ 7;
342 len
= os_strlen(hash
) / 2;
343 buf
= os_malloc(len
);
344 if (buf
&& hexstr2bin(hash
, buf
, len
) == 0) {
347 ret
= CertFindCertificateInStore(cs
,
356 CertCloseStore(cs
, 0);
362 static int tls_cryptoapi_cert(SSL
*ssl
, const char *name
)
365 RSA
*rsa
= NULL
, *pub_rsa
;
366 struct cryptoapi_rsa_data
*priv
;
367 RSA_METHOD
*rsa_meth
;
370 (strncmp(name
, "cert://", 7) != 0 &&
371 strncmp(name
, "hash://", 7) != 0))
374 priv
= os_zalloc(sizeof(*priv
));
375 rsa_meth
= os_zalloc(sizeof(*rsa_meth
));
376 if (priv
== NULL
|| rsa_meth
== NULL
) {
377 wpa_printf(MSG_WARNING
, "CryptoAPI: Failed to allocate memory "
378 "for CryptoAPI RSA method");
384 priv
->cert
= cryptoapi_find_cert(name
, CERT_SYSTEM_STORE_CURRENT_USER
);
385 if (priv
->cert
== NULL
) {
386 priv
->cert
= cryptoapi_find_cert(
387 name
, CERT_SYSTEM_STORE_LOCAL_MACHINE
);
389 if (priv
->cert
== NULL
) {
390 wpa_printf(MSG_INFO
, "CryptoAPI: Could not find certificate "
395 cert
= d2i_X509(NULL
,
396 (const unsigned char **) &priv
->cert
->pbCertEncoded
,
397 priv
->cert
->cbCertEncoded
);
399 wpa_printf(MSG_INFO
, "CryptoAPI: Could not process X509 DER "
404 if (!CryptAcquireCertificatePrivateKey(priv
->cert
,
405 CRYPT_ACQUIRE_COMPARE_KEY_FLAG
,
406 NULL
, &priv
->crypt_prov
,
408 &priv
->free_crypt_prov
)) {
409 cryptoapi_error("Failed to acquire a private key for the "
414 rsa_meth
->name
= "Microsoft CryptoAPI RSA Method";
415 rsa_meth
->rsa_pub_enc
= cryptoapi_rsa_pub_enc
;
416 rsa_meth
->rsa_pub_dec
= cryptoapi_rsa_pub_dec
;
417 rsa_meth
->rsa_priv_enc
= cryptoapi_rsa_priv_enc
;
418 rsa_meth
->rsa_priv_dec
= cryptoapi_rsa_priv_dec
;
419 rsa_meth
->finish
= cryptoapi_finish
;
420 rsa_meth
->flags
= RSA_METHOD_FLAG_NO_CHECK
;
421 rsa_meth
->app_data
= (char *) priv
;
425 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE
,
426 ERR_R_MALLOC_FAILURE
);
430 if (!SSL_use_certificate(ssl
, cert
)) {
435 pub_rsa
= cert
->cert_info
->key
->pkey
->pkey
.rsa
;
439 rsa
->n
= BN_dup(pub_rsa
->n
);
440 rsa
->e
= BN_dup(pub_rsa
->e
);
441 if (!RSA_set_method(rsa
, rsa_meth
))
444 if (!SSL_use_RSAPrivateKey(ssl
, rsa
))
457 cryptoapi_free_data(priv
);
463 static int tls_cryptoapi_ca_cert(SSL_CTX
*ssl_ctx
, SSL
*ssl
, const char *name
)
466 PCCERT_CONTEXT ctx
= NULL
;
474 if (name
== NULL
|| strncmp(name
, "cert_store://", 13) != 0)
479 wstore
= os_malloc((os_strlen(store
) + 1) * sizeof(WCHAR
));
482 wsprintf(wstore
, L
"%S", store
);
483 cs
= CertOpenSystemStore(0, wstore
);
486 cs
= CertOpenSystemStore(0, store
);
489 wpa_printf(MSG_DEBUG
, "%s: failed to open system cert store "
490 "'%s': error=%d", __func__
, store
,
491 (int) GetLastError());
495 while ((ctx
= CertEnumCertificatesInStore(cs
, ctx
))) {
496 cert
= d2i_X509(NULL
,
497 (const unsigned char **) &ctx
->pbCertEncoded
,
500 wpa_printf(MSG_INFO
, "CryptoAPI: Could not process "
501 "X509 DER encoding for CA cert");
505 X509_NAME_oneline(X509_get_subject_name(cert
), buf
,
507 wpa_printf(MSG_DEBUG
, "OpenSSL: Loaded CA certificate for "
508 "system certificate store: subject='%s'", buf
);
510 if (!X509_STORE_add_cert(ssl_ctx
->cert_store
, cert
)) {
511 tls_show_errors(MSG_WARNING
, __func__
,
512 "Failed to add ca_cert to OpenSSL "
513 "certificate store");
519 if (!CertCloseStore(cs
, 0)) {
520 wpa_printf(MSG_DEBUG
, "%s: failed to close system cert store "
521 "'%s': error=%d", __func__
, name
+ 13,
522 (int) GetLastError());
529 #else /* CONFIG_NATIVE_WINDOWS */
531 static int tls_cryptoapi_cert(SSL
*ssl
, const char *name
)
536 #endif /* CONFIG_NATIVE_WINDOWS */
539 static void ssl_info_cb(const SSL
*ssl
, int where
, int ret
)
544 wpa_printf(MSG_DEBUG
, "SSL: (where=0x%x ret=0x%x)", where
, ret
);
545 w
= where
& ~SSL_ST_MASK
;
546 if (w
& SSL_ST_CONNECT
)
548 else if (w
& SSL_ST_ACCEPT
)
553 if (where
& SSL_CB_LOOP
) {
554 wpa_printf(MSG_DEBUG
, "SSL: %s:%s",
555 str
, SSL_state_string_long(ssl
));
556 } else if (where
& SSL_CB_ALERT
) {
557 struct tls_connection
*conn
= SSL_get_app_data((SSL
*) ssl
);
558 wpa_printf(MSG_INFO
, "SSL: SSL3 alert: %s:%s:%s",
559 where
& SSL_CB_READ
?
560 "read (remote end reported an error)" :
561 "write (local SSL3 detected an error)",
562 SSL_alert_type_string_long(ret
),
563 SSL_alert_desc_string_long(ret
));
564 if ((ret
>> 8) == SSL3_AL_FATAL
) {
565 if (where
& SSL_CB_READ
)
568 conn
->write_alerts
++;
570 if (conn
->context
->event_cb
!= NULL
) {
571 union tls_event_data ev
;
572 struct tls_context
*context
= conn
->context
;
573 os_memset(&ev
, 0, sizeof(ev
));
574 ev
.alert
.is_local
= !(where
& SSL_CB_READ
);
575 ev
.alert
.type
= SSL_alert_type_string_long(ret
);
576 ev
.alert
.description
= SSL_alert_desc_string_long(ret
);
577 context
->event_cb(context
->cb_ctx
, TLS_ALERT
, &ev
);
579 } else if (where
& SSL_CB_EXIT
&& ret
<= 0) {
580 wpa_printf(MSG_DEBUG
, "SSL: %s:%s in %s",
581 str
, ret
== 0 ? "failed" : "error",
582 SSL_state_string_long(ssl
));
587 #ifndef OPENSSL_NO_ENGINE
589 * tls_engine_load_dynamic_generic - load any openssl engine
590 * @pre: an array of commands and values that load an engine initialized
591 * in the engine specific function
592 * @post: an array of commands and values that initialize an already loaded
593 * engine (or %NULL if not required)
594 * @id: the engine id of the engine to load (only required if post is not %NULL
596 * This function is a generic function that loads any openssl engine.
598 * Returns: 0 on success, -1 on failure
600 static int tls_engine_load_dynamic_generic(const char *pre
[],
601 const char *post
[], const char *id
)
604 const char *dynamic_id
= "dynamic";
606 engine
= ENGINE_by_id(id
);
609 wpa_printf(MSG_DEBUG
, "ENGINE: engine '%s' is already "
615 engine
= ENGINE_by_id(dynamic_id
);
616 if (engine
== NULL
) {
617 wpa_printf(MSG_INFO
, "ENGINE: Can't find engine %s [%s]",
619 ERR_error_string(ERR_get_error(), NULL
));
623 /* Perform the pre commands. This will load the engine. */
624 while (pre
&& pre
[0]) {
625 wpa_printf(MSG_DEBUG
, "ENGINE: '%s' '%s'", pre
[0], pre
[1]);
626 if (ENGINE_ctrl_cmd_string(engine
, pre
[0], pre
[1], 0) == 0) {
627 wpa_printf(MSG_INFO
, "ENGINE: ctrl cmd_string failed: "
628 "%s %s [%s]", pre
[0], pre
[1],
629 ERR_error_string(ERR_get_error(), NULL
));
637 * Free the reference to the "dynamic" engine. The loaded engine can
638 * now be looked up using ENGINE_by_id().
642 engine
= ENGINE_by_id(id
);
643 if (engine
== NULL
) {
644 wpa_printf(MSG_INFO
, "ENGINE: Can't find engine %s [%s]",
645 id
, ERR_error_string(ERR_get_error(), NULL
));
649 while (post
&& post
[0]) {
650 wpa_printf(MSG_DEBUG
, "ENGINE: '%s' '%s'", post
[0], post
[1]);
651 if (ENGINE_ctrl_cmd_string(engine
, post
[0], post
[1], 0) == 0) {
652 wpa_printf(MSG_DEBUG
, "ENGINE: ctrl cmd_string failed:"
653 " %s %s [%s]", post
[0], post
[1],
654 ERR_error_string(ERR_get_error(), NULL
));
655 ENGINE_remove(engine
);
668 * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
669 * @pkcs11_so_path: pksc11_so_path from the configuration
670 * @pcks11_module_path: pkcs11_module_path from the configuration
672 static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path
,
673 const char *pkcs11_module_path
)
675 char *engine_id
= "pkcs11";
676 const char *pre_cmd
[] = {
677 "SO_PATH", NULL
/* pkcs11_so_path */,
678 "ID", NULL
/* engine_id */,
680 /* "NO_VCHECK", "1", */
684 const char *post_cmd
[] = {
685 "MODULE_PATH", NULL
/* pkcs11_module_path */,
692 pre_cmd
[1] = pkcs11_so_path
;
693 pre_cmd
[3] = engine_id
;
694 if (pkcs11_module_path
)
695 post_cmd
[1] = pkcs11_module_path
;
699 wpa_printf(MSG_DEBUG
, "ENGINE: Loading pkcs11 Engine from %s",
702 return tls_engine_load_dynamic_generic(pre_cmd
, post_cmd
, engine_id
);
707 * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
708 * @opensc_so_path: opensc_so_path from the configuration
710 static int tls_engine_load_dynamic_opensc(const char *opensc_so_path
)
712 char *engine_id
= "opensc";
713 const char *pre_cmd
[] = {
714 "SO_PATH", NULL
/* opensc_so_path */,
715 "ID", NULL
/* engine_id */,
724 pre_cmd
[1] = opensc_so_path
;
725 pre_cmd
[3] = engine_id
;
727 wpa_printf(MSG_DEBUG
, "ENGINE: Loading OpenSC Engine from %s",
730 return tls_engine_load_dynamic_generic(pre_cmd
, NULL
, engine_id
);
732 #endif /* OPENSSL_NO_ENGINE */
735 void * tls_init(const struct tls_config
*conf
)
738 struct tls_context
*context
;
741 if (tls_openssl_ref_count
== 0) {
742 tls_global
= context
= tls_context_new(conf
);
747 if (conf
&& conf
->fips_mode
) {
748 if (!FIPS_mode_set(1)) {
749 wpa_printf(MSG_ERROR
, "Failed to enable FIPS "
751 ERR_load_crypto_strings();
752 ERR_print_errors_fp(stderr
);
757 wpa_printf(MSG_INFO
, "Running in FIPS mode");
759 #else /* OPENSSL_FIPS */
760 if (conf
&& conf
->fips_mode
) {
761 wpa_printf(MSG_ERROR
, "FIPS mode requested, but not "
767 #endif /* OPENSSL_FIPS */
768 #endif /* CONFIG_FIPS */
769 SSL_load_error_strings();
771 #ifndef OPENSSL_NO_SHA256
772 EVP_add_digest(EVP_sha256());
773 #endif /* OPENSSL_NO_SHA256 */
774 /* TODO: if /dev/urandom is available, PRNG is seeded
775 * automatically. If this is not the case, random data should
779 #ifndef OPENSSL_NO_RC2
781 * 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
782 * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
783 * versions, but it looks like OpenSSL 1.0.0 does not do that
786 EVP_add_cipher(EVP_rc2_40_cbc());
787 #endif /* OPENSSL_NO_RC2 */
789 #endif /* PKCS12_FUNCS */
791 context
= tls_context_new(conf
);
795 tls_openssl_ref_count
++;
797 ssl
= SSL_CTX_new(SSLv23_method());
799 tls_openssl_ref_count
--;
800 if (context
!= tls_global
)
802 if (tls_openssl_ref_count
== 0) {
809 SSL_CTX_set_options(ssl
, SSL_OP_NO_SSLv2
);
810 SSL_CTX_set_options(ssl
, SSL_OP_NO_SSLv3
);
812 SSL_CTX_set_info_callback(ssl
, ssl_info_cb
);
813 SSL_CTX_set_app_data(ssl
, context
);
815 #ifndef OPENSSL_NO_ENGINE
816 wpa_printf(MSG_DEBUG
, "ENGINE: Loading dynamic engine");
817 ERR_load_ENGINE_strings();
818 ENGINE_load_dynamic();
821 (conf
->opensc_engine_path
|| conf
->pkcs11_engine_path
||
822 conf
->pkcs11_module_path
)) {
823 if (tls_engine_load_dynamic_opensc(conf
->opensc_engine_path
) ||
824 tls_engine_load_dynamic_pkcs11(conf
->pkcs11_engine_path
,
825 conf
->pkcs11_module_path
)) {
830 #endif /* OPENSSL_NO_ENGINE */
832 if (conf
&& conf
->openssl_ciphers
)
833 ciphers
= conf
->openssl_ciphers
;
835 ciphers
= "DEFAULT:!EXP:!LOW";
836 if (SSL_CTX_set_cipher_list(ssl
, ciphers
) != 1) {
837 wpa_printf(MSG_ERROR
,
838 "OpenSSL: Failed to set cipher string '%s'",
848 void tls_deinit(void *ssl_ctx
)
850 SSL_CTX
*ssl
= ssl_ctx
;
851 struct tls_context
*context
= SSL_CTX_get_app_data(ssl
);
852 if (context
!= tls_global
)
856 tls_openssl_ref_count
--;
857 if (tls_openssl_ref_count
== 0) {
858 #ifndef OPENSSL_NO_ENGINE
860 #endif /* OPENSSL_NO_ENGINE */
861 CRYPTO_cleanup_all_ex_data();
862 ERR_remove_thread_state(NULL
);
865 os_free(tls_global
->ocsp_stapling_response
);
866 tls_global
->ocsp_stapling_response
= NULL
;
873 #ifndef OPENSSL_NO_ENGINE
875 /* Cryptoki return values */
876 #define CKR_PIN_INCORRECT 0x000000a0
877 #define CKR_PIN_INVALID 0x000000a1
878 #define CKR_PIN_LEN_RANGE 0x000000a2
881 #define ERR_LIB_PKCS11 ERR_LIB_USER
883 static int tls_is_pin_error(unsigned int err
)
885 return ERR_GET_LIB(err
) == ERR_LIB_PKCS11
&&
886 (ERR_GET_REASON(err
) == CKR_PIN_INCORRECT
||
887 ERR_GET_REASON(err
) == CKR_PIN_INVALID
||
888 ERR_GET_REASON(err
) == CKR_PIN_LEN_RANGE
);
891 #endif /* OPENSSL_NO_ENGINE */
894 static int tls_engine_init(struct tls_connection
*conn
, const char *engine_id
,
895 const char *pin
, const char *key_id
,
896 const char *cert_id
, const char *ca_cert_id
)
898 #ifndef OPENSSL_NO_ENGINE
900 if (engine_id
== NULL
) {
901 wpa_printf(MSG_ERROR
, "ENGINE: Engine ID not set");
907 ENGINE_load_dynamic();
909 conn
->engine
= ENGINE_by_id(engine_id
);
911 wpa_printf(MSG_ERROR
, "ENGINE: engine %s not available [%s]",
912 engine_id
, ERR_error_string(ERR_get_error(), NULL
));
915 if (ENGINE_init(conn
->engine
) != 1) {
916 wpa_printf(MSG_ERROR
, "ENGINE: engine init failed "
917 "(engine: %s) [%s]", engine_id
,
918 ERR_error_string(ERR_get_error(), NULL
));
921 wpa_printf(MSG_DEBUG
, "ENGINE: engine initialized");
924 if (pin
&& ENGINE_ctrl_cmd_string(conn
->engine
, "PIN", pin
, 0) == 0) {
925 wpa_printf(MSG_ERROR
, "ENGINE: cannot set pin [%s]",
926 ERR_error_string(ERR_get_error(), NULL
));
932 * Ensure that the ENGINE does not attempt to use the OpenSSL
933 * UI system to obtain a PIN, if we didn't provide one.
936 const void *password
;
937 const char *prompt_info
;
938 } key_cb
= { "", NULL
};
940 /* load private key first in-case PIN is required for cert */
941 conn
->private_key
= ENGINE_load_private_key(conn
->engine
,
944 if (!conn
->private_key
) {
945 unsigned long err
= ERR_get_error();
947 wpa_printf(MSG_ERROR
,
948 "ENGINE: cannot load private key with id '%s' [%s]",
950 ERR_error_string(err
, NULL
));
951 if (tls_is_pin_error(err
))
952 ret
= TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN
;
954 ret
= TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED
;
959 /* handle a certificate and/or CA certificate */
960 if (cert_id
|| ca_cert_id
) {
961 const char *cmd_name
= "LOAD_CERT_CTRL";
963 /* test if the engine supports a LOAD_CERT_CTRL */
964 if (!ENGINE_ctrl(conn
->engine
, ENGINE_CTRL_GET_CMD_FROM_NAME
,
965 0, (void *)cmd_name
, NULL
)) {
966 wpa_printf(MSG_ERROR
, "ENGINE: engine does not support"
967 " loading certificates");
968 ret
= TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED
;
977 ENGINE_free(conn
->engine
);
981 if (conn
->private_key
) {
982 EVP_PKEY_free(conn
->private_key
);
983 conn
->private_key
= NULL
;
987 #else /* OPENSSL_NO_ENGINE */
989 #endif /* OPENSSL_NO_ENGINE */
993 static void tls_engine_deinit(struct tls_connection
*conn
)
995 #ifndef OPENSSL_NO_ENGINE
996 wpa_printf(MSG_DEBUG
, "ENGINE: engine deinit");
997 if (conn
->private_key
) {
998 EVP_PKEY_free(conn
->private_key
);
999 conn
->private_key
= NULL
;
1002 ENGINE_finish(conn
->engine
);
1003 conn
->engine
= NULL
;
1005 #endif /* OPENSSL_NO_ENGINE */
1009 int tls_get_errors(void *ssl_ctx
)
1014 while ((err
= ERR_get_error())) {
1015 wpa_printf(MSG_INFO
, "TLS - SSL error: %s",
1016 ERR_error_string(err
, NULL
));
1024 static void tls_msg_cb(int write_p
, int version
, int content_type
,
1025 const void *buf
, size_t len
, SSL
*ssl
, void *arg
)
1027 struct tls_connection
*conn
= arg
;
1028 const u8
*pos
= buf
;
1030 wpa_printf(MSG_DEBUG
, "OpenSSL: %s ver=0x%x content_type=%d",
1031 write_p
? "TX" : "RX", version
, content_type
);
1032 wpa_hexdump_key(MSG_MSGDUMP
, "OpenSSL: Message", buf
, len
);
1033 if (content_type
== 24 && len
>= 3 && pos
[0] == 1) {
1034 size_t payload_len
= WPA_GET_BE16(pos
+ 1);
1035 if (payload_len
+ 3 > len
) {
1036 wpa_printf(MSG_ERROR
, "OpenSSL: Heartbeat attack detected");
1037 conn
->invalid_hb_used
= 1;
1043 struct tls_connection
* tls_connection_init(void *ssl_ctx
)
1045 SSL_CTX
*ssl
= ssl_ctx
;
1046 struct tls_connection
*conn
;
1048 struct tls_context
*context
= SSL_CTX_get_app_data(ssl
);
1050 conn
= os_zalloc(sizeof(*conn
));
1053 conn
->ssl_ctx
= ssl_ctx
;
1054 conn
->ssl
= SSL_new(ssl
);
1055 if (conn
->ssl
== NULL
) {
1056 tls_show_errors(MSG_INFO
, __func__
,
1057 "Failed to initialize new SSL connection");
1062 conn
->context
= context
;
1063 SSL_set_app_data(conn
->ssl
, conn
);
1064 SSL_set_msg_callback(conn
->ssl
, tls_msg_cb
);
1065 SSL_set_msg_callback_arg(conn
->ssl
, conn
);
1066 options
= SSL_OP_NO_SSLv2
| SSL_OP_NO_SSLv3
|
1067 SSL_OP_SINGLE_DH_USE
;
1068 #ifdef SSL_OP_NO_COMPRESSION
1069 options
|= SSL_OP_NO_COMPRESSION
;
1070 #endif /* SSL_OP_NO_COMPRESSION */
1071 SSL_set_options(conn
->ssl
, options
);
1073 conn
->ssl_in
= BIO_new(BIO_s_mem());
1074 if (!conn
->ssl_in
) {
1075 tls_show_errors(MSG_INFO
, __func__
,
1076 "Failed to create a new BIO for ssl_in");
1077 SSL_free(conn
->ssl
);
1082 conn
->ssl_out
= BIO_new(BIO_s_mem());
1083 if (!conn
->ssl_out
) {
1084 tls_show_errors(MSG_INFO
, __func__
,
1085 "Failed to create a new BIO for ssl_out");
1086 SSL_free(conn
->ssl
);
1087 BIO_free(conn
->ssl_in
);
1092 SSL_set_bio(conn
->ssl
, conn
->ssl_in
, conn
->ssl_out
);
1098 void tls_connection_deinit(void *ssl_ctx
, struct tls_connection
*conn
)
1102 SSL_free(conn
->ssl
);
1103 tls_engine_deinit(conn
);
1104 os_free(conn
->subject_match
);
1105 os_free(conn
->altsubject_match
);
1106 os_free(conn
->suffix_match
);
1107 os_free(conn
->domain_match
);
1108 os_free(conn
->session_ticket
);
1113 int tls_connection_established(void *ssl_ctx
, struct tls_connection
*conn
)
1115 return conn
? SSL_is_init_finished(conn
->ssl
) : 0;
1119 int tls_connection_shutdown(void *ssl_ctx
, struct tls_connection
*conn
)
1124 /* Shutdown previous TLS connection without notifying the peer
1125 * because the connection was already terminated in practice
1126 * and "close notify" shutdown alert would confuse AS. */
1127 SSL_set_quiet_shutdown(conn
->ssl
, 1);
1128 SSL_shutdown(conn
->ssl
);
1133 static int tls_match_altsubject_component(X509
*cert
, int type
,
1134 const char *value
, size_t len
)
1141 ext
= X509_get_ext_d2i(cert
, NID_subject_alt_name
, NULL
, NULL
);
1143 for (i
= 0; ext
&& i
< sk_GENERAL_NAME_num(ext
); i
++) {
1144 gen
= sk_GENERAL_NAME_value(ext
, i
);
1145 if (gen
->type
!= type
)
1147 if (os_strlen((char *) gen
->d
.ia5
->data
) == len
&&
1148 os_memcmp(value
, gen
->d
.ia5
->data
, len
) == 0)
1156 static int tls_match_altsubject(X509
*cert
, const char *match
)
1159 const char *pos
, *end
;
1164 if (os_strncmp(pos
, "EMAIL:", 6) == 0) {
1167 } else if (os_strncmp(pos
, "DNS:", 4) == 0) {
1170 } else if (os_strncmp(pos
, "URI:", 4) == 0) {
1174 wpa_printf(MSG_INFO
, "TLS: Invalid altSubjectName "
1178 end
= os_strchr(pos
, ';');
1180 if (os_strncmp(end
+ 1, "EMAIL:", 6) == 0 ||
1181 os_strncmp(end
+ 1, "DNS:", 4) == 0 ||
1182 os_strncmp(end
+ 1, "URI:", 4) == 0)
1184 end
= os_strchr(end
+ 1, ';');
1189 len
= os_strlen(pos
);
1190 if (tls_match_altsubject_component(cert
, type
, pos
, len
) > 0)
1199 #ifndef CONFIG_NATIVE_WINDOWS
1200 static int domain_suffix_match(const u8
*val
, size_t len
, const char *match
,
1203 size_t i
, match_len
;
1205 /* Check for embedded nuls that could mess up suffix matching */
1206 for (i
= 0; i
< len
; i
++) {
1207 if (val
[i
] == '\0') {
1208 wpa_printf(MSG_DEBUG
, "TLS: Embedded null in a string - reject");
1213 match_len
= os_strlen(match
);
1214 if (match_len
> len
|| (full
&& match_len
!= len
))
1217 if (os_strncasecmp((const char *) val
+ len
- match_len
, match
,
1219 return 0; /* no match */
1221 if (match_len
== len
)
1222 return 1; /* exact match */
1224 if (val
[len
- match_len
- 1] == '.')
1225 return 1; /* full label match completes suffix match */
1227 wpa_printf(MSG_DEBUG
, "TLS: Reject due to incomplete label match");
1230 #endif /* CONFIG_NATIVE_WINDOWS */
1233 static int tls_match_suffix(X509
*cert
, const char *match
, int full
)
1235 #ifdef CONFIG_NATIVE_WINDOWS
1236 /* wincrypt.h has conflicting X509_NAME definition */
1238 #else /* CONFIG_NATIVE_WINDOWS */
1246 wpa_printf(MSG_DEBUG
, "TLS: Match domain against %s%s",
1247 full
? "": "suffix ", match
);
1249 ext
= X509_get_ext_d2i(cert
, NID_subject_alt_name
, NULL
, NULL
);
1251 for (j
= 0; ext
&& j
< sk_GENERAL_NAME_num(ext
); j
++) {
1252 gen
= sk_GENERAL_NAME_value(ext
, j
);
1253 if (gen
->type
!= GEN_DNS
)
1256 wpa_hexdump_ascii(MSG_DEBUG
, "TLS: Certificate dNSName",
1257 gen
->d
.dNSName
->data
,
1258 gen
->d
.dNSName
->length
);
1259 if (domain_suffix_match(gen
->d
.dNSName
->data
,
1260 gen
->d
.dNSName
->length
, match
, full
) ==
1262 wpa_printf(MSG_DEBUG
, "TLS: %s in dNSName found",
1263 full
? "Match" : "Suffix match");
1269 wpa_printf(MSG_DEBUG
, "TLS: None of the dNSName(s) matched");
1273 name
= X509_get_subject_name(cert
);
1279 i
= X509_NAME_get_index_by_NID(name
, NID_commonName
, i
);
1282 e
= X509_NAME_get_entry(name
, i
);
1285 cn
= X509_NAME_ENTRY_get_data(e
);
1288 wpa_hexdump_ascii(MSG_DEBUG
, "TLS: Certificate commonName",
1289 cn
->data
, cn
->length
);
1290 if (domain_suffix_match(cn
->data
, cn
->length
, match
, full
) == 1)
1292 wpa_printf(MSG_DEBUG
, "TLS: %s in commonName found",
1293 full
? "Match" : "Suffix match");
1298 wpa_printf(MSG_DEBUG
, "TLS: No CommonName %smatch found",
1299 full
? "": "suffix ");
1301 #endif /* CONFIG_NATIVE_WINDOWS */
1305 static enum tls_fail_reason
openssl_tls_fail_reason(int err
)
1308 case X509_V_ERR_CERT_REVOKED
:
1309 return TLS_FAIL_REVOKED
;
1310 case X509_V_ERR_CERT_NOT_YET_VALID
:
1311 case X509_V_ERR_CRL_NOT_YET_VALID
:
1312 return TLS_FAIL_NOT_YET_VALID
;
1313 case X509_V_ERR_CERT_HAS_EXPIRED
:
1314 case X509_V_ERR_CRL_HAS_EXPIRED
:
1315 return TLS_FAIL_EXPIRED
;
1316 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT
:
1317 case X509_V_ERR_UNABLE_TO_GET_CRL
:
1318 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER
:
1319 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
:
1320 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY
:
1321 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT
:
1322 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE
:
1323 case X509_V_ERR_CERT_CHAIN_TOO_LONG
:
1324 case X509_V_ERR_PATH_LENGTH_EXCEEDED
:
1325 case X509_V_ERR_INVALID_CA
:
1326 return TLS_FAIL_UNTRUSTED
;
1327 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE
:
1328 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE
:
1329 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY
:
1330 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD
:
1331 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD
:
1332 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD
:
1333 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD
:
1334 case X509_V_ERR_CERT_UNTRUSTED
:
1335 case X509_V_ERR_CERT_REJECTED
:
1336 return TLS_FAIL_BAD_CERTIFICATE
;
1338 return TLS_FAIL_UNSPECIFIED
;
1343 static struct wpabuf
* get_x509_cert(X509
*cert
)
1348 int cert_len
= i2d_X509(cert
, NULL
);
1352 buf
= wpabuf_alloc(cert_len
);
1356 tmp
= wpabuf_put(buf
, cert_len
);
1357 i2d_X509(cert
, &tmp
);
1362 static void openssl_tls_fail_event(struct tls_connection
*conn
,
1363 X509
*err_cert
, int err
, int depth
,
1364 const char *subject
, const char *err_str
,
1365 enum tls_fail_reason reason
)
1367 union tls_event_data ev
;
1368 struct wpabuf
*cert
= NULL
;
1369 struct tls_context
*context
= conn
->context
;
1371 if (context
->event_cb
== NULL
)
1374 cert
= get_x509_cert(err_cert
);
1375 os_memset(&ev
, 0, sizeof(ev
));
1376 ev
.cert_fail
.reason
= reason
!= TLS_FAIL_UNSPECIFIED
?
1377 reason
: openssl_tls_fail_reason(err
);
1378 ev
.cert_fail
.depth
= depth
;
1379 ev
.cert_fail
.subject
= subject
;
1380 ev
.cert_fail
.reason_txt
= err_str
;
1381 ev
.cert_fail
.cert
= cert
;
1382 context
->event_cb(context
->cb_ctx
, TLS_CERT_CHAIN_FAILURE
, &ev
);
1387 static void openssl_tls_cert_event(struct tls_connection
*conn
,
1388 X509
*err_cert
, int depth
,
1389 const char *subject
)
1391 struct wpabuf
*cert
= NULL
;
1392 union tls_event_data ev
;
1393 struct tls_context
*context
= conn
->context
;
1394 char *altsubject
[TLS_MAX_ALT_SUBJECT
];
1395 int alt
, num_altsubject
= 0;
1399 #ifdef CONFIG_SHA256
1401 #endif /* CONFIG_SHA256 */
1403 if (context
->event_cb
== NULL
)
1406 os_memset(&ev
, 0, sizeof(ev
));
1407 if (conn
->cert_probe
|| context
->cert_in_cb
) {
1408 cert
= get_x509_cert(err_cert
);
1409 ev
.peer_cert
.cert
= cert
;
1411 #ifdef CONFIG_SHA256
1415 addr
[0] = wpabuf_head(cert
);
1416 len
[0] = wpabuf_len(cert
);
1417 if (sha256_vector(1, addr
, len
, hash
) == 0) {
1418 ev
.peer_cert
.hash
= hash
;
1419 ev
.peer_cert
.hash_len
= sizeof(hash
);
1422 #endif /* CONFIG_SHA256 */
1423 ev
.peer_cert
.depth
= depth
;
1424 ev
.peer_cert
.subject
= subject
;
1426 ext
= X509_get_ext_d2i(err_cert
, NID_subject_alt_name
, NULL
, NULL
);
1427 for (i
= 0; ext
&& i
< sk_GENERAL_NAME_num(ext
); i
++) {
1430 if (num_altsubject
== TLS_MAX_ALT_SUBJECT
)
1432 gen
= sk_GENERAL_NAME_value(ext
, i
);
1433 if (gen
->type
!= GEN_EMAIL
&&
1434 gen
->type
!= GEN_DNS
&&
1435 gen
->type
!= GEN_URI
)
1438 pos
= os_malloc(10 + gen
->d
.ia5
->length
+ 1);
1441 altsubject
[num_altsubject
++] = pos
;
1443 switch (gen
->type
) {
1445 os_memcpy(pos
, "EMAIL:", 6);
1449 os_memcpy(pos
, "DNS:", 4);
1453 os_memcpy(pos
, "URI:", 4);
1458 os_memcpy(pos
, gen
->d
.ia5
->data
, gen
->d
.ia5
->length
);
1459 pos
+= gen
->d
.ia5
->length
;
1463 for (alt
= 0; alt
< num_altsubject
; alt
++)
1464 ev
.peer_cert
.altsubject
[alt
] = altsubject
[alt
];
1465 ev
.peer_cert
.num_altsubject
= num_altsubject
;
1467 context
->event_cb(context
->cb_ctx
, TLS_PEER_CERTIFICATE
, &ev
);
1469 for (alt
= 0; alt
< num_altsubject
; alt
++)
1470 os_free(altsubject
[alt
]);
1474 static int tls_verify_cb(int preverify_ok
, X509_STORE_CTX
*x509_ctx
)
1480 struct tls_connection
*conn
;
1481 struct tls_context
*context
;
1482 char *match
, *altmatch
, *suffix_match
, *domain_match
;
1483 const char *err_str
;
1485 err_cert
= X509_STORE_CTX_get_current_cert(x509_ctx
);
1489 err
= X509_STORE_CTX_get_error(x509_ctx
);
1490 depth
= X509_STORE_CTX_get_error_depth(x509_ctx
);
1491 ssl
= X509_STORE_CTX_get_ex_data(x509_ctx
,
1492 SSL_get_ex_data_X509_STORE_CTX_idx());
1493 X509_NAME_oneline(X509_get_subject_name(err_cert
), buf
, sizeof(buf
));
1495 conn
= SSL_get_app_data(ssl
);
1500 conn
->peer_cert
= err_cert
;
1501 else if (depth
== 1)
1502 conn
->peer_issuer
= err_cert
;
1503 else if (depth
== 2)
1504 conn
->peer_issuer_issuer
= err_cert
;
1506 context
= conn
->context
;
1507 match
= conn
->subject_match
;
1508 altmatch
= conn
->altsubject_match
;
1509 suffix_match
= conn
->suffix_match
;
1510 domain_match
= conn
->domain_match
;
1512 if (!preverify_ok
&& !conn
->ca_cert_verify
)
1514 if (!preverify_ok
&& depth
> 0 && conn
->server_cert_only
)
1516 if (!preverify_ok
&& (conn
->flags
& TLS_CONN_DISABLE_TIME_CHECKS
) &&
1517 (err
== X509_V_ERR_CERT_HAS_EXPIRED
||
1518 err
== X509_V_ERR_CERT_NOT_YET_VALID
)) {
1519 wpa_printf(MSG_DEBUG
, "OpenSSL: Ignore certificate validity "
1524 err_str
= X509_verify_cert_error_string(err
);
1526 #ifdef CONFIG_SHA256
1528 * Do not require preverify_ok so we can explicity allow otherwise
1529 * invalid pinned server certificates.
1531 if (depth
== 0 && conn
->server_cert_only
) {
1532 struct wpabuf
*cert
;
1533 cert
= get_x509_cert(err_cert
);
1535 wpa_printf(MSG_DEBUG
, "OpenSSL: Could not fetch "
1536 "server certificate data");
1542 addr
[0] = wpabuf_head(cert
);
1543 len
[0] = wpabuf_len(cert
);
1544 if (sha256_vector(1, addr
, len
, hash
) < 0 ||
1545 os_memcmp(conn
->srv_cert_hash
, hash
, 32) != 0) {
1546 err_str
= "Server certificate mismatch";
1547 err
= X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN
;
1549 } else if (!preverify_ok
) {
1551 * Certificate matches pinned certificate, allow
1552 * regardless of other problems.
1554 wpa_printf(MSG_DEBUG
,
1555 "OpenSSL: Ignore validation issues for a pinned server certificate");
1561 #endif /* CONFIG_SHA256 */
1563 if (!preverify_ok
) {
1564 wpa_printf(MSG_WARNING
, "TLS: Certificate verification failed,"
1565 " error %d (%s) depth %d for '%s'", err
, err_str
,
1567 openssl_tls_fail_event(conn
, err_cert
, err
, depth
, buf
,
1568 err_str
, TLS_FAIL_UNSPECIFIED
);
1569 return preverify_ok
;
1572 wpa_printf(MSG_DEBUG
, "TLS: tls_verify_cb - preverify_ok=%d "
1573 "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
1574 preverify_ok
, err
, err_str
,
1575 conn
->ca_cert_verify
, depth
, buf
);
1576 if (depth
== 0 && match
&& os_strstr(buf
, match
) == NULL
) {
1577 wpa_printf(MSG_WARNING
, "TLS: Subject '%s' did not "
1578 "match with '%s'", buf
, match
);
1580 openssl_tls_fail_event(conn
, err_cert
, err
, depth
, buf
,
1582 TLS_FAIL_SUBJECT_MISMATCH
);
1583 } else if (depth
== 0 && altmatch
&&
1584 !tls_match_altsubject(err_cert
, altmatch
)) {
1585 wpa_printf(MSG_WARNING
, "TLS: altSubjectName match "
1586 "'%s' not found", altmatch
);
1588 openssl_tls_fail_event(conn
, err_cert
, err
, depth
, buf
,
1589 "AltSubject mismatch",
1590 TLS_FAIL_ALTSUBJECT_MISMATCH
);
1591 } else if (depth
== 0 && suffix_match
&&
1592 !tls_match_suffix(err_cert
, suffix_match
, 0)) {
1593 wpa_printf(MSG_WARNING
, "TLS: Domain suffix match '%s' not found",
1596 openssl_tls_fail_event(conn
, err_cert
, err
, depth
, buf
,
1597 "Domain suffix mismatch",
1598 TLS_FAIL_DOMAIN_SUFFIX_MISMATCH
);
1599 } else if (depth
== 0 && domain_match
&&
1600 !tls_match_suffix(err_cert
, domain_match
, 1)) {
1601 wpa_printf(MSG_WARNING
, "TLS: Domain match '%s' not found",
1604 openssl_tls_fail_event(conn
, err_cert
, err
, depth
, buf
,
1606 TLS_FAIL_DOMAIN_MISMATCH
);
1608 openssl_tls_cert_event(conn
, err_cert
, depth
, buf
);
1610 if (conn
->cert_probe
&& preverify_ok
&& depth
== 0) {
1611 wpa_printf(MSG_DEBUG
, "OpenSSL: Reject server certificate "
1612 "on probe-only run");
1614 openssl_tls_fail_event(conn
, err_cert
, err
, depth
, buf
,
1615 "Server certificate chain probe",
1616 TLS_FAIL_SERVER_CHAIN_PROBE
);
1619 if (preverify_ok
&& context
->event_cb
!= NULL
)
1620 context
->event_cb(context
->cb_ctx
,
1621 TLS_CERT_CHAIN_SUCCESS
, NULL
);
1623 return preverify_ok
;
1627 #ifndef OPENSSL_NO_STDIO
1628 static int tls_load_ca_der(void *_ssl_ctx
, const char *ca_cert
)
1630 SSL_CTX
*ssl_ctx
= _ssl_ctx
;
1631 X509_LOOKUP
*lookup
;
1634 lookup
= X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx
),
1635 X509_LOOKUP_file());
1636 if (lookup
== NULL
) {
1637 tls_show_errors(MSG_WARNING
, __func__
,
1638 "Failed add lookup for X509 store");
1642 if (!X509_LOOKUP_load_file(lookup
, ca_cert
, X509_FILETYPE_ASN1
)) {
1643 unsigned long err
= ERR_peek_error();
1644 tls_show_errors(MSG_WARNING
, __func__
,
1645 "Failed load CA in DER format");
1646 if (ERR_GET_LIB(err
) == ERR_LIB_X509
&&
1647 ERR_GET_REASON(err
) == X509_R_CERT_ALREADY_IN_HASH_TABLE
) {
1648 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - ignoring "
1649 "cert already in hash table error",
1657 #endif /* OPENSSL_NO_STDIO */
1660 static int tls_connection_ca_cert(void *_ssl_ctx
, struct tls_connection
*conn
,
1661 const char *ca_cert
, const u8
*ca_cert_blob
,
1662 size_t ca_cert_blob_len
, const char *ca_path
)
1664 SSL_CTX
*ssl_ctx
= _ssl_ctx
;
1668 * Remove previously configured trusted CA certificates before adding
1671 store
= X509_STORE_new();
1672 if (store
== NULL
) {
1673 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - failed to allocate new "
1674 "certificate store", __func__
);
1677 SSL_CTX_set_cert_store(ssl_ctx
, store
);
1679 SSL_set_verify(conn
->ssl
, SSL_VERIFY_PEER
, tls_verify_cb
);
1680 conn
->ca_cert_verify
= 1;
1682 if (ca_cert
&& os_strncmp(ca_cert
, "probe://", 8) == 0) {
1683 wpa_printf(MSG_DEBUG
, "OpenSSL: Probe for server certificate "
1685 conn
->cert_probe
= 1;
1686 conn
->ca_cert_verify
= 0;
1690 if (ca_cert
&& os_strncmp(ca_cert
, "hash://", 7) == 0) {
1691 #ifdef CONFIG_SHA256
1692 const char *pos
= ca_cert
+ 7;
1693 if (os_strncmp(pos
, "server/sha256/", 14) != 0) {
1694 wpa_printf(MSG_DEBUG
, "OpenSSL: Unsupported ca_cert "
1695 "hash value '%s'", ca_cert
);
1699 if (os_strlen(pos
) != 32 * 2) {
1700 wpa_printf(MSG_DEBUG
, "OpenSSL: Unexpected SHA256 "
1701 "hash length in ca_cert '%s'", ca_cert
);
1704 if (hexstr2bin(pos
, conn
->srv_cert_hash
, 32) < 0) {
1705 wpa_printf(MSG_DEBUG
, "OpenSSL: Invalid SHA256 hash "
1706 "value in ca_cert '%s'", ca_cert
);
1709 conn
->server_cert_only
= 1;
1710 wpa_printf(MSG_DEBUG
, "OpenSSL: Checking only server "
1711 "certificate match");
1713 #else /* CONFIG_SHA256 */
1714 wpa_printf(MSG_INFO
, "No SHA256 included in the build - "
1715 "cannot validate server certificate hash");
1717 #endif /* CONFIG_SHA256 */
1721 X509
*cert
= d2i_X509(NULL
,
1722 (const unsigned char **) &ca_cert_blob
,
1725 tls_show_errors(MSG_WARNING
, __func__
,
1726 "Failed to parse ca_cert_blob");
1730 if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx
),
1732 unsigned long err
= ERR_peek_error();
1733 tls_show_errors(MSG_WARNING
, __func__
,
1734 "Failed to add ca_cert_blob to "
1735 "certificate store");
1736 if (ERR_GET_LIB(err
) == ERR_LIB_X509
&&
1737 ERR_GET_REASON(err
) ==
1738 X509_R_CERT_ALREADY_IN_HASH_TABLE
) {
1739 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - ignoring "
1740 "cert already in hash table error",
1748 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - added ca_cert_blob "
1749 "to certificate store", __func__
);
1754 if (ca_cert
&& os_strncmp("keystore://", ca_cert
, 11) == 0) {
1755 BIO
*bio
= BIO_from_keystore(&ca_cert
[11]);
1756 STACK_OF(X509_INFO
) *stack
= NULL
;
1760 stack
= PEM_X509_INFO_read_bio(bio
, NULL
, NULL
, NULL
);
1766 for (i
= 0; i
< sk_X509_INFO_num(stack
); ++i
) {
1767 X509_INFO
*info
= sk_X509_INFO_value(stack
, i
);
1769 X509_STORE_add_cert(ssl_ctx
->cert_store
,
1773 X509_STORE_add_crl(ssl_ctx
->cert_store
,
1777 sk_X509_INFO_pop_free(stack
, X509_INFO_free
);
1778 SSL_set_verify(conn
->ssl
, SSL_VERIFY_PEER
, tls_verify_cb
);
1781 #endif /* ANDROID */
1783 #ifdef CONFIG_NATIVE_WINDOWS
1784 if (ca_cert
&& tls_cryptoapi_ca_cert(ssl_ctx
, conn
->ssl
, ca_cert
) ==
1786 wpa_printf(MSG_DEBUG
, "OpenSSL: Added CA certificates from "
1787 "system certificate store");
1790 #endif /* CONFIG_NATIVE_WINDOWS */
1792 if (ca_cert
|| ca_path
) {
1793 #ifndef OPENSSL_NO_STDIO
1794 if (SSL_CTX_load_verify_locations(ssl_ctx
, ca_cert
, ca_path
) !=
1796 tls_show_errors(MSG_WARNING
, __func__
,
1797 "Failed to load root certificates");
1799 tls_load_ca_der(ssl_ctx
, ca_cert
) == 0) {
1800 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - loaded "
1801 "DER format CA certificate",
1806 wpa_printf(MSG_DEBUG
, "TLS: Trusted root "
1807 "certificate(s) loaded");
1808 tls_get_errors(ssl_ctx
);
1810 #else /* OPENSSL_NO_STDIO */
1811 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - OPENSSL_NO_STDIO",
1814 #endif /* OPENSSL_NO_STDIO */
1816 /* No ca_cert configured - do not try to verify server
1818 conn
->ca_cert_verify
= 0;
1825 static int tls_global_ca_cert(SSL_CTX
*ssl_ctx
, const char *ca_cert
)
1828 if (SSL_CTX_load_verify_locations(ssl_ctx
, ca_cert
, NULL
) != 1)
1830 tls_show_errors(MSG_WARNING
, __func__
,
1831 "Failed to load root certificates");
1835 wpa_printf(MSG_DEBUG
, "TLS: Trusted root "
1836 "certificate(s) loaded");
1838 #ifndef OPENSSL_NO_STDIO
1839 /* Add the same CAs to the client certificate requests */
1840 SSL_CTX_set_client_CA_list(ssl_ctx
,
1841 SSL_load_client_CA_file(ca_cert
));
1842 #endif /* OPENSSL_NO_STDIO */
1849 int tls_global_set_verify(void *ssl_ctx
, int check_crl
)
1854 X509_STORE
*cs
= SSL_CTX_get_cert_store(ssl_ctx
);
1856 tls_show_errors(MSG_INFO
, __func__
, "Failed to get "
1857 "certificate store when enabling "
1861 flags
= X509_V_FLAG_CRL_CHECK
;
1863 flags
|= X509_V_FLAG_CRL_CHECK_ALL
;
1864 X509_STORE_set_flags(cs
, flags
);
1870 static int tls_connection_set_subject_match(struct tls_connection
*conn
,
1871 const char *subject_match
,
1872 const char *altsubject_match
,
1873 const char *suffix_match
,
1874 const char *domain_match
)
1876 os_free(conn
->subject_match
);
1877 conn
->subject_match
= NULL
;
1878 if (subject_match
) {
1879 conn
->subject_match
= os_strdup(subject_match
);
1880 if (conn
->subject_match
== NULL
)
1884 os_free(conn
->altsubject_match
);
1885 conn
->altsubject_match
= NULL
;
1886 if (altsubject_match
) {
1887 conn
->altsubject_match
= os_strdup(altsubject_match
);
1888 if (conn
->altsubject_match
== NULL
)
1892 os_free(conn
->suffix_match
);
1893 conn
->suffix_match
= NULL
;
1895 conn
->suffix_match
= os_strdup(suffix_match
);
1896 if (conn
->suffix_match
== NULL
)
1900 os_free(conn
->domain_match
);
1901 conn
->domain_match
= NULL
;
1903 conn
->domain_match
= os_strdup(domain_match
);
1904 if (conn
->domain_match
== NULL
)
1912 int tls_connection_set_verify(void *ssl_ctx
, struct tls_connection
*conn
,
1915 static int counter
= 0;
1921 conn
->ca_cert_verify
= 1;
1922 SSL_set_verify(conn
->ssl
, SSL_VERIFY_PEER
|
1923 SSL_VERIFY_FAIL_IF_NO_PEER_CERT
|
1924 SSL_VERIFY_CLIENT_ONCE
, tls_verify_cb
);
1926 conn
->ca_cert_verify
= 0;
1927 SSL_set_verify(conn
->ssl
, SSL_VERIFY_NONE
, NULL
);
1930 SSL_set_accept_state(conn
->ssl
);
1933 * Set session id context in order to avoid fatal errors when client
1934 * tries to resume a session. However, set the context to a unique
1935 * value in order to effectively disable session resumption for now
1936 * since not all areas of the server code are ready for it (e.g.,
1937 * EAP-TTLS needs special handling for Phase 2 after abbreviated TLS
1941 SSL_set_session_id_context(conn
->ssl
,
1942 (const unsigned char *) &counter
,
1949 static int tls_connection_client_cert(struct tls_connection
*conn
,
1950 const char *client_cert
,
1951 const u8
*client_cert_blob
,
1952 size_t client_cert_blob_len
)
1954 if (client_cert
== NULL
&& client_cert_blob
== NULL
)
1957 if (client_cert_blob
&&
1958 SSL_use_certificate_ASN1(conn
->ssl
, (u8
*) client_cert_blob
,
1959 client_cert_blob_len
) == 1) {
1960 wpa_printf(MSG_DEBUG
, "OpenSSL: SSL_use_certificate_ASN1 --> "
1963 } else if (client_cert_blob
) {
1964 tls_show_errors(MSG_DEBUG
, __func__
,
1965 "SSL_use_certificate_ASN1 failed");
1968 if (client_cert
== NULL
)
1972 if (os_strncmp("keystore://", client_cert
, 11) == 0) {
1973 BIO
*bio
= BIO_from_keystore(&client_cert
[11]);
1977 x509
= PEM_read_bio_X509(bio
, NULL
, NULL
, NULL
);
1981 if (SSL_use_certificate(conn
->ssl
, x509
) == 1)
1987 #endif /* ANDROID */
1989 #ifndef OPENSSL_NO_STDIO
1990 if (SSL_use_certificate_file(conn
->ssl
, client_cert
,
1991 SSL_FILETYPE_ASN1
) == 1) {
1992 wpa_printf(MSG_DEBUG
, "OpenSSL: SSL_use_certificate_file (DER)"
1997 if (SSL_use_certificate_file(conn
->ssl
, client_cert
,
1998 SSL_FILETYPE_PEM
) == 1) {
2000 wpa_printf(MSG_DEBUG
, "OpenSSL: SSL_use_certificate_file (PEM)"
2005 tls_show_errors(MSG_DEBUG
, __func__
,
2006 "SSL_use_certificate_file failed");
2007 #else /* OPENSSL_NO_STDIO */
2008 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__
);
2009 #endif /* OPENSSL_NO_STDIO */
2015 static int tls_global_client_cert(SSL_CTX
*ssl_ctx
, const char *client_cert
)
2017 #ifndef OPENSSL_NO_STDIO
2018 if (client_cert
== NULL
)
2021 if (SSL_CTX_use_certificate_file(ssl_ctx
, client_cert
,
2022 SSL_FILETYPE_ASN1
) != 1 &&
2023 SSL_CTX_use_certificate_chain_file(ssl_ctx
, client_cert
) != 1 &&
2024 SSL_CTX_use_certificate_file(ssl_ctx
, client_cert
,
2025 SSL_FILETYPE_PEM
) != 1) {
2026 tls_show_errors(MSG_INFO
, __func__
,
2027 "Failed to load client certificate");
2031 #else /* OPENSSL_NO_STDIO */
2032 if (client_cert
== NULL
)
2034 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__
);
2036 #endif /* OPENSSL_NO_STDIO */
2040 static int tls_passwd_cb(char *buf
, int size
, int rwflag
, void *password
)
2042 if (password
== NULL
) {
2045 os_strlcpy(buf
, (char *) password
, size
);
2046 return os_strlen(buf
);
2051 static int tls_parse_pkcs12(SSL_CTX
*ssl_ctx
, SSL
*ssl
, PKCS12
*p12
,
2056 STACK_OF(X509
) *certs
;
2063 if (!PKCS12_parse(p12
, passwd
, &pkey
, &cert
, &certs
)) {
2064 tls_show_errors(MSG_DEBUG
, __func__
,
2065 "Failed to parse PKCS12 file");
2069 wpa_printf(MSG_DEBUG
, "TLS: Successfully parsed PKCS12 data");
2072 X509_NAME_oneline(X509_get_subject_name(cert
), buf
,
2074 wpa_printf(MSG_DEBUG
, "TLS: Got certificate from PKCS12: "
2075 "subject='%s'", buf
);
2077 if (SSL_use_certificate(ssl
, cert
) != 1)
2080 if (SSL_CTX_use_certificate(ssl_ctx
, cert
) != 1)
2087 wpa_printf(MSG_DEBUG
, "TLS: Got private key from PKCS12");
2089 if (SSL_use_PrivateKey(ssl
, pkey
) != 1)
2092 if (SSL_CTX_use_PrivateKey(ssl_ctx
, pkey
) != 1)
2095 EVP_PKEY_free(pkey
);
2099 while ((cert
= sk_X509_pop(certs
)) != NULL
) {
2100 X509_NAME_oneline(X509_get_subject_name(cert
), buf
,
2102 wpa_printf(MSG_DEBUG
, "TLS: additional certificate"
2103 " from PKCS12: subject='%s'", buf
);
2105 * There is no SSL equivalent for the chain cert - so
2106 * always add it to the context...
2108 if (SSL_CTX_add_extra_chain_cert(ssl_ctx
, cert
) != 1) {
2113 sk_X509_free(certs
);
2119 tls_get_errors(ssl_ctx
);
2123 #endif /* PKCS12_FUNCS */
2126 static int tls_read_pkcs12(SSL_CTX
*ssl_ctx
, SSL
*ssl
, const char *private_key
,
2133 f
= fopen(private_key
, "rb");
2137 p12
= d2i_PKCS12_fp(f
, NULL
);
2141 tls_show_errors(MSG_INFO
, __func__
,
2142 "Failed to use PKCS#12 file");
2146 return tls_parse_pkcs12(ssl_ctx
, ssl
, p12
, passwd
);
2148 #else /* PKCS12_FUNCS */
2149 wpa_printf(MSG_INFO
, "TLS: PKCS12 support disabled - cannot read "
2152 #endif /* PKCS12_FUNCS */
2156 static int tls_read_pkcs12_blob(SSL_CTX
*ssl_ctx
, SSL
*ssl
,
2157 const u8
*blob
, size_t len
, const char *passwd
)
2162 p12
= d2i_PKCS12(NULL
, (const unsigned char **) &blob
, len
);
2164 tls_show_errors(MSG_INFO
, __func__
,
2165 "Failed to use PKCS#12 blob");
2169 return tls_parse_pkcs12(ssl_ctx
, ssl
, p12
, passwd
);
2171 #else /* PKCS12_FUNCS */
2172 wpa_printf(MSG_INFO
, "TLS: PKCS12 support disabled - cannot parse "
2175 #endif /* PKCS12_FUNCS */
2179 #ifndef OPENSSL_NO_ENGINE
2180 static int tls_engine_get_cert(struct tls_connection
*conn
,
2181 const char *cert_id
,
2184 /* this runs after the private key is loaded so no PIN is required */
2186 const char *cert_id
;
2189 params
.cert_id
= cert_id
;
2192 if (!ENGINE_ctrl_cmd(conn
->engine
, "LOAD_CERT_CTRL",
2193 0, ¶ms
, NULL
, 1)) {
2194 unsigned long err
= ERR_get_error();
2196 wpa_printf(MSG_ERROR
, "ENGINE: cannot load client cert with id"
2197 " '%s' [%s]", cert_id
,
2198 ERR_error_string(err
, NULL
));
2199 if (tls_is_pin_error(err
))
2200 return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN
;
2201 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED
;
2204 wpa_printf(MSG_ERROR
, "ENGINE: did not properly cert with id"
2206 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED
;
2208 *cert
= params
.cert
;
2211 #endif /* OPENSSL_NO_ENGINE */
2214 static int tls_connection_engine_client_cert(struct tls_connection
*conn
,
2215 const char *cert_id
)
2217 #ifndef OPENSSL_NO_ENGINE
2220 if (tls_engine_get_cert(conn
, cert_id
, &cert
))
2223 if (!SSL_use_certificate(conn
->ssl
, cert
)) {
2224 tls_show_errors(MSG_ERROR
, __func__
,
2225 "SSL_use_certificate failed");
2230 wpa_printf(MSG_DEBUG
, "ENGINE: SSL_use_certificate --> "
2234 #else /* OPENSSL_NO_ENGINE */
2236 #endif /* OPENSSL_NO_ENGINE */
2240 static int tls_connection_engine_ca_cert(void *_ssl_ctx
,
2241 struct tls_connection
*conn
,
2242 const char *ca_cert_id
)
2244 #ifndef OPENSSL_NO_ENGINE
2246 SSL_CTX
*ssl_ctx
= _ssl_ctx
;
2249 if (tls_engine_get_cert(conn
, ca_cert_id
, &cert
))
2252 /* start off the same as tls_connection_ca_cert */
2253 store
= X509_STORE_new();
2254 if (store
== NULL
) {
2255 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - failed to allocate new "
2256 "certificate store", __func__
);
2260 SSL_CTX_set_cert_store(ssl_ctx
, store
);
2261 if (!X509_STORE_add_cert(store
, cert
)) {
2262 unsigned long err
= ERR_peek_error();
2263 tls_show_errors(MSG_WARNING
, __func__
,
2264 "Failed to add CA certificate from engine "
2265 "to certificate store");
2266 if (ERR_GET_LIB(err
) == ERR_LIB_X509
&&
2267 ERR_GET_REASON(err
) == X509_R_CERT_ALREADY_IN_HASH_TABLE
) {
2268 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - ignoring cert"
2269 " already in hash table error",
2277 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - added CA certificate from engine "
2278 "to certificate store", __func__
);
2279 SSL_set_verify(conn
->ssl
, SSL_VERIFY_PEER
, tls_verify_cb
);
2280 conn
->ca_cert_verify
= 1;
2284 #else /* OPENSSL_NO_ENGINE */
2286 #endif /* OPENSSL_NO_ENGINE */
2290 static int tls_connection_engine_private_key(struct tls_connection
*conn
)
2292 #ifndef OPENSSL_NO_ENGINE
2293 if (SSL_use_PrivateKey(conn
->ssl
, conn
->private_key
) != 1) {
2294 tls_show_errors(MSG_ERROR
, __func__
,
2295 "ENGINE: cannot use private key for TLS");
2298 if (!SSL_check_private_key(conn
->ssl
)) {
2299 tls_show_errors(MSG_INFO
, __func__
,
2300 "Private key failed verification");
2304 #else /* OPENSSL_NO_ENGINE */
2305 wpa_printf(MSG_ERROR
, "SSL: Configuration uses engine, but "
2306 "engine support was not compiled in");
2308 #endif /* OPENSSL_NO_ENGINE */
2312 static int tls_connection_private_key(void *_ssl_ctx
,
2313 struct tls_connection
*conn
,
2314 const char *private_key
,
2315 const char *private_key_passwd
,
2316 const u8
*private_key_blob
,
2317 size_t private_key_blob_len
)
2319 SSL_CTX
*ssl_ctx
= _ssl_ctx
;
2323 if (private_key
== NULL
&& private_key_blob
== NULL
)
2326 if (private_key_passwd
) {
2327 passwd
= os_strdup(private_key_passwd
);
2333 SSL_CTX_set_default_passwd_cb(ssl_ctx
, tls_passwd_cb
);
2334 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx
, passwd
);
2337 while (private_key_blob
) {
2338 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA
, conn
->ssl
,
2339 (u8
*) private_key_blob
,
2340 private_key_blob_len
) == 1) {
2341 wpa_printf(MSG_DEBUG
, "OpenSSL: SSL_use_PrivateKey_"
2342 "ASN1(EVP_PKEY_RSA) --> OK");
2347 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA
, conn
->ssl
,
2348 (u8
*) private_key_blob
,
2349 private_key_blob_len
) == 1) {
2350 wpa_printf(MSG_DEBUG
, "OpenSSL: SSL_use_PrivateKey_"
2351 "ASN1(EVP_PKEY_DSA) --> OK");
2356 if (SSL_use_RSAPrivateKey_ASN1(conn
->ssl
,
2357 (u8
*) private_key_blob
,
2358 private_key_blob_len
) == 1) {
2359 wpa_printf(MSG_DEBUG
, "OpenSSL: "
2360 "SSL_use_RSAPrivateKey_ASN1 --> OK");
2365 if (tls_read_pkcs12_blob(ssl_ctx
, conn
->ssl
, private_key_blob
,
2366 private_key_blob_len
, passwd
) == 0) {
2367 wpa_printf(MSG_DEBUG
, "OpenSSL: PKCS#12 as blob --> "
2376 while (!ok
&& private_key
) {
2377 #ifndef OPENSSL_NO_STDIO
2378 if (SSL_use_PrivateKey_file(conn
->ssl
, private_key
,
2379 SSL_FILETYPE_ASN1
) == 1) {
2380 wpa_printf(MSG_DEBUG
, "OpenSSL: "
2381 "SSL_use_PrivateKey_File (DER) --> OK");
2386 if (SSL_use_PrivateKey_file(conn
->ssl
, private_key
,
2387 SSL_FILETYPE_PEM
) == 1) {
2388 wpa_printf(MSG_DEBUG
, "OpenSSL: "
2389 "SSL_use_PrivateKey_File (PEM) --> OK");
2393 #else /* OPENSSL_NO_STDIO */
2394 wpa_printf(MSG_DEBUG
, "OpenSSL: %s - OPENSSL_NO_STDIO",
2396 #endif /* OPENSSL_NO_STDIO */
2398 if (tls_read_pkcs12(ssl_ctx
, conn
->ssl
, private_key
, passwd
)
2400 wpa_printf(MSG_DEBUG
, "OpenSSL: Reading PKCS#12 file "
2406 if (tls_cryptoapi_cert(conn
->ssl
, private_key
) == 0) {
2407 wpa_printf(MSG_DEBUG
, "OpenSSL: Using CryptoAPI to "
2408 "access certificate store --> OK");
2417 tls_show_errors(MSG_INFO
, __func__
,
2418 "Failed to load private key");
2423 SSL_CTX_set_default_passwd_cb(ssl_ctx
, NULL
);
2426 if (!SSL_check_private_key(conn
->ssl
)) {
2427 tls_show_errors(MSG_INFO
, __func__
, "Private key failed "
2432 wpa_printf(MSG_DEBUG
, "SSL: Private key loaded successfully");
2437 static int tls_global_private_key(SSL_CTX
*ssl_ctx
, const char *private_key
,
2438 const char *private_key_passwd
)
2442 if (private_key
== NULL
)
2445 if (private_key_passwd
) {
2446 passwd
= os_strdup(private_key_passwd
);
2452 SSL_CTX_set_default_passwd_cb(ssl_ctx
, tls_passwd_cb
);
2453 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx
, passwd
);
2455 #ifndef OPENSSL_NO_STDIO
2456 SSL_CTX_use_PrivateKey_file(ssl_ctx
, private_key
,
2457 SSL_FILETYPE_ASN1
) != 1 &&
2458 SSL_CTX_use_PrivateKey_file(ssl_ctx
, private_key
,
2459 SSL_FILETYPE_PEM
) != 1 &&
2460 #endif /* OPENSSL_NO_STDIO */
2461 tls_read_pkcs12(ssl_ctx
, NULL
, private_key
, passwd
)) {
2462 tls_show_errors(MSG_INFO
, __func__
,
2463 "Failed to load private key");
2470 SSL_CTX_set_default_passwd_cb(ssl_ctx
, NULL
);
2472 if (!SSL_CTX_check_private_key(ssl_ctx
)) {
2473 tls_show_errors(MSG_INFO
, __func__
,
2474 "Private key failed verification");
2482 static int tls_connection_dh(struct tls_connection
*conn
, const char *dh_file
)
2484 #ifdef OPENSSL_NO_DH
2485 if (dh_file
== NULL
)
2487 wpa_printf(MSG_ERROR
, "TLS: openssl does not include DH support, but "
2488 "dh_file specified");
2490 #else /* OPENSSL_NO_DH */
2494 /* TODO: add support for dh_blob */
2495 if (dh_file
== NULL
)
2500 bio
= BIO_new_file(dh_file
, "r");
2502 wpa_printf(MSG_INFO
, "TLS: Failed to open DH file '%s': %s",
2503 dh_file
, ERR_error_string(ERR_get_error(), NULL
));
2506 dh
= PEM_read_bio_DHparams(bio
, NULL
, NULL
, NULL
);
2508 #ifndef OPENSSL_NO_DSA
2509 while (dh
== NULL
) {
2511 wpa_printf(MSG_DEBUG
, "TLS: Failed to parse DH file '%s': %s -"
2512 " trying to parse as DSA params", dh_file
,
2513 ERR_error_string(ERR_get_error(), NULL
));
2514 bio
= BIO_new_file(dh_file
, "r");
2517 dsa
= PEM_read_bio_DSAparams(bio
, NULL
, NULL
, NULL
);
2520 wpa_printf(MSG_DEBUG
, "TLS: Failed to parse DSA file "
2521 "'%s': %s", dh_file
,
2522 ERR_error_string(ERR_get_error(), NULL
));
2526 wpa_printf(MSG_DEBUG
, "TLS: DH file in DSA param format");
2527 dh
= DSA_dup_DH(dsa
);
2530 wpa_printf(MSG_INFO
, "TLS: Failed to convert DSA "
2531 "params into DH params");
2536 #endif /* !OPENSSL_NO_DSA */
2538 wpa_printf(MSG_INFO
, "TLS: Failed to read/parse DH/DSA file "
2543 if (SSL_set_tmp_dh(conn
->ssl
, dh
) != 1) {
2544 wpa_printf(MSG_INFO
, "TLS: Failed to set DH params from '%s': "
2546 ERR_error_string(ERR_get_error(), NULL
));
2552 #endif /* OPENSSL_NO_DH */
2556 static int tls_global_dh(SSL_CTX
*ssl_ctx
, const char *dh_file
)
2558 #ifdef OPENSSL_NO_DH
2559 if (dh_file
== NULL
)
2561 wpa_printf(MSG_ERROR
, "TLS: openssl does not include DH support, but "
2562 "dh_file specified");
2564 #else /* OPENSSL_NO_DH */
2568 /* TODO: add support for dh_blob */
2569 if (dh_file
== NULL
)
2571 if (ssl_ctx
== NULL
)
2574 bio
= BIO_new_file(dh_file
, "r");
2576 wpa_printf(MSG_INFO
, "TLS: Failed to open DH file '%s': %s",
2577 dh_file
, ERR_error_string(ERR_get_error(), NULL
));
2580 dh
= PEM_read_bio_DHparams(bio
, NULL
, NULL
, NULL
);
2582 #ifndef OPENSSL_NO_DSA
2583 while (dh
== NULL
) {
2585 wpa_printf(MSG_DEBUG
, "TLS: Failed to parse DH file '%s': %s -"
2586 " trying to parse as DSA params", dh_file
,
2587 ERR_error_string(ERR_get_error(), NULL
));
2588 bio
= BIO_new_file(dh_file
, "r");
2591 dsa
= PEM_read_bio_DSAparams(bio
, NULL
, NULL
, NULL
);
2594 wpa_printf(MSG_DEBUG
, "TLS: Failed to parse DSA file "
2595 "'%s': %s", dh_file
,
2596 ERR_error_string(ERR_get_error(), NULL
));
2600 wpa_printf(MSG_DEBUG
, "TLS: DH file in DSA param format");
2601 dh
= DSA_dup_DH(dsa
);
2604 wpa_printf(MSG_INFO
, "TLS: Failed to convert DSA "
2605 "params into DH params");
2610 #endif /* !OPENSSL_NO_DSA */
2612 wpa_printf(MSG_INFO
, "TLS: Failed to read/parse DH/DSA file "
2617 if (SSL_CTX_set_tmp_dh(ssl_ctx
, dh
) != 1) {
2618 wpa_printf(MSG_INFO
, "TLS: Failed to set DH params from '%s': "
2620 ERR_error_string(ERR_get_error(), NULL
));
2626 #endif /* OPENSSL_NO_DH */
2630 int tls_connection_get_keys(void *ssl_ctx
, struct tls_connection
*conn
,
2631 struct tls_keys
*keys
)
2634 wpa_printf(MSG_ERROR
, "OpenSSL: TLS keys cannot be exported in FIPS "
2637 #else /* CONFIG_FIPS */
2640 if (conn
== NULL
|| keys
== NULL
)
2643 if (ssl
== NULL
|| ssl
->s3
== NULL
|| ssl
->session
== NULL
)
2646 os_memset(keys
, 0, sizeof(*keys
));
2647 keys
->client_random
= ssl
->s3
->client_random
;
2648 keys
->client_random_len
= SSL3_RANDOM_SIZE
;
2649 keys
->server_random
= ssl
->s3
->server_random
;
2650 keys
->server_random_len
= SSL3_RANDOM_SIZE
;
2653 #endif /* CONFIG_FIPS */
2657 static int openssl_get_keyblock_size(SSL
*ssl
)
2659 const EVP_CIPHER
*c
;
2663 if (ssl
->enc_read_ctx
== NULL
|| ssl
->enc_read_ctx
->cipher
== NULL
||
2664 ssl
->read_hash
== NULL
)
2667 c
= ssl
->enc_read_ctx
->cipher
;
2668 #if OPENSSL_VERSION_NUMBER >= 0x00909000L
2669 h
= EVP_MD_CTX_md(ssl
->read_hash
);
2674 md_size
= EVP_MD_size(h
);
2675 #if OPENSSL_VERSION_NUMBER >= 0x10000000L
2677 md_size
= ssl
->s3
->tmp
.new_mac_secret_size
;
2682 wpa_printf(MSG_DEBUG
, "OpenSSL: keyblock size: key_len=%d MD_size=%d "
2683 "IV_len=%d", EVP_CIPHER_key_length(c
), md_size
,
2684 EVP_CIPHER_iv_length(c
));
2685 return 2 * (EVP_CIPHER_key_length(c
) +
2687 EVP_CIPHER_iv_length(c
));
2691 static int openssl_tls_prf(void *tls_ctx
, struct tls_connection
*conn
,
2692 const char *label
, int server_random_first
,
2693 int skip_keyblock
, u8
*out
, size_t out_len
)
2696 wpa_printf(MSG_ERROR
, "OpenSSL: TLS keys cannot be exported in FIPS "
2699 #else /* CONFIG_FIPS */
2708 * TLS library did not support key generation, so get the needed TLS
2709 * session parameters and use an internal implementation of TLS PRF to
2716 if (ssl
== NULL
|| ssl
->s3
== NULL
|| ssl
->session
== NULL
||
2717 ssl
->session
->master_key_length
<= 0)
2720 if (skip_keyblock
) {
2721 skip
= openssl_get_keyblock_size(ssl
);
2724 tmp_out
= os_malloc(skip
+ out_len
);
2730 rnd
= os_malloc(2 * SSL3_RANDOM_SIZE
);
2736 if (server_random_first
) {
2737 os_memcpy(rnd
, ssl
->s3
->server_random
, SSL3_RANDOM_SIZE
);
2738 os_memcpy(rnd
+ SSL3_RANDOM_SIZE
, ssl
->s3
->client_random
,
2741 os_memcpy(rnd
, ssl
->s3
->client_random
, SSL3_RANDOM_SIZE
);
2742 os_memcpy(rnd
+ SSL3_RANDOM_SIZE
, ssl
->s3
->server_random
,
2746 /* TODO: TLSv1.2 may need another PRF. This could use something closer
2747 * to SSL_export_keying_material() design. */
2748 if (tls_prf_sha1_md5(ssl
->session
->master_key
,
2749 ssl
->session
->master_key_length
,
2750 label
, rnd
, 2 * SSL3_RANDOM_SIZE
,
2751 _out
, skip
+ out_len
) == 0)
2754 if (ret
== 0 && skip_keyblock
)
2755 os_memcpy(out
, _out
+ skip
, out_len
);
2756 bin_clear_free(tmp_out
, skip
);
2759 #endif /* CONFIG_FIPS */
2763 int tls_connection_prf(void *tls_ctx
, struct tls_connection
*conn
,
2764 const char *label
, int server_random_first
,
2765 int skip_keyblock
, u8
*out
, size_t out_len
)
2767 #if OPENSSL_VERSION_NUMBER >= 0x10001000L
2771 if (server_random_first
|| skip_keyblock
)
2772 return openssl_tls_prf(tls_ctx
, conn
, label
,
2773 server_random_first
, skip_keyblock
,
2776 if (SSL_export_keying_material(ssl
, out
, out_len
, label
,
2777 os_strlen(label
), NULL
, 0, 0) == 1) {
2778 wpa_printf(MSG_DEBUG
, "OpenSSL: Using internal PRF");
2782 return openssl_tls_prf(tls_ctx
, conn
, label
, server_random_first
,
2783 skip_keyblock
, out
, out_len
);
2787 static struct wpabuf
*
2788 openssl_handshake(struct tls_connection
*conn
, const struct wpabuf
*in_data
,
2792 struct wpabuf
*out_data
;
2795 * Give TLS handshake data from the server (if available) to OpenSSL
2799 BIO_write(conn
->ssl_in
, wpabuf_head(in_data
), wpabuf_len(in_data
))
2801 tls_show_errors(MSG_INFO
, __func__
,
2802 "Handshake failed - BIO_write");
2806 /* Initiate TLS handshake or continue the existing handshake */
2808 res
= SSL_accept(conn
->ssl
);
2810 res
= SSL_connect(conn
->ssl
);
2812 int err
= SSL_get_error(conn
->ssl
, res
);
2813 if (err
== SSL_ERROR_WANT_READ
)
2814 wpa_printf(MSG_DEBUG
, "SSL: SSL_connect - want "
2816 else if (err
== SSL_ERROR_WANT_WRITE
)
2817 wpa_printf(MSG_DEBUG
, "SSL: SSL_connect - want to "
2820 tls_show_errors(MSG_INFO
, __func__
, "SSL_connect");
2825 /* Get the TLS handshake data to be sent to the server */
2826 res
= BIO_ctrl_pending(conn
->ssl_out
);
2827 wpa_printf(MSG_DEBUG
, "SSL: %d bytes pending from ssl_out", res
);
2828 out_data
= wpabuf_alloc(res
);
2829 if (out_data
== NULL
) {
2830 wpa_printf(MSG_DEBUG
, "SSL: Failed to allocate memory for "
2831 "handshake output (%d bytes)", res
);
2832 if (BIO_reset(conn
->ssl_out
) < 0) {
2833 tls_show_errors(MSG_INFO
, __func__
,
2834 "BIO_reset failed");
2838 res
= res
== 0 ? 0 : BIO_read(conn
->ssl_out
, wpabuf_mhead(out_data
),
2841 tls_show_errors(MSG_INFO
, __func__
,
2842 "Handshake failed - BIO_read");
2843 if (BIO_reset(conn
->ssl_out
) < 0) {
2844 tls_show_errors(MSG_INFO
, __func__
,
2845 "BIO_reset failed");
2847 wpabuf_free(out_data
);
2850 wpabuf_put(out_data
, res
);
2856 static struct wpabuf
*
2857 openssl_get_appl_data(struct tls_connection
*conn
, size_t max_len
)
2859 struct wpabuf
*appl_data
;
2862 appl_data
= wpabuf_alloc(max_len
+ 100);
2863 if (appl_data
== NULL
)
2866 res
= SSL_read(conn
->ssl
, wpabuf_mhead(appl_data
),
2867 wpabuf_size(appl_data
));
2869 int err
= SSL_get_error(conn
->ssl
, res
);
2870 if (err
== SSL_ERROR_WANT_READ
||
2871 err
== SSL_ERROR_WANT_WRITE
) {
2872 wpa_printf(MSG_DEBUG
, "SSL: No Application Data "
2875 tls_show_errors(MSG_INFO
, __func__
,
2876 "Failed to read possible "
2877 "Application Data");
2879 wpabuf_free(appl_data
);
2883 wpabuf_put(appl_data
, res
);
2884 wpa_hexdump_buf_key(MSG_MSGDUMP
, "SSL: Application Data in Finished "
2885 "message", appl_data
);
2891 static struct wpabuf
*
2892 openssl_connection_handshake(struct tls_connection
*conn
,
2893 const struct wpabuf
*in_data
,
2894 struct wpabuf
**appl_data
, int server
)
2896 struct wpabuf
*out_data
;
2901 out_data
= openssl_handshake(conn
, in_data
, server
);
2902 if (out_data
== NULL
)
2904 if (conn
->invalid_hb_used
) {
2905 wpa_printf(MSG_INFO
, "TLS: Heartbeat attack detected - do not send response");
2906 wpabuf_free(out_data
);
2910 if (SSL_is_init_finished(conn
->ssl
) && appl_data
&& in_data
)
2911 *appl_data
= openssl_get_appl_data(conn
, wpabuf_len(in_data
));
2913 if (conn
->invalid_hb_used
) {
2914 wpa_printf(MSG_INFO
, "TLS: Heartbeat attack detected - do not send response");
2916 wpabuf_free(*appl_data
);
2919 wpabuf_free(out_data
);
2928 tls_connection_handshake(void *ssl_ctx
, struct tls_connection
*conn
,
2929 const struct wpabuf
*in_data
,
2930 struct wpabuf
**appl_data
)
2932 return openssl_connection_handshake(conn
, in_data
, appl_data
, 0);
2936 struct wpabuf
* tls_connection_server_handshake(void *tls_ctx
,
2937 struct tls_connection
*conn
,
2938 const struct wpabuf
*in_data
,
2939 struct wpabuf
**appl_data
)
2941 return openssl_connection_handshake(conn
, in_data
, appl_data
, 1);
2945 struct wpabuf
* tls_connection_encrypt(void *tls_ctx
,
2946 struct tls_connection
*conn
,
2947 const struct wpabuf
*in_data
)
2955 /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
2956 if ((res
= BIO_reset(conn
->ssl_in
)) < 0 ||
2957 (res
= BIO_reset(conn
->ssl_out
)) < 0) {
2958 tls_show_errors(MSG_INFO
, __func__
, "BIO_reset failed");
2961 res
= SSL_write(conn
->ssl
, wpabuf_head(in_data
), wpabuf_len(in_data
));
2963 tls_show_errors(MSG_INFO
, __func__
,
2964 "Encryption failed - SSL_write");
2968 /* Read encrypted data to be sent to the server */
2969 buf
= wpabuf_alloc(wpabuf_len(in_data
) + 300);
2972 res
= BIO_read(conn
->ssl_out
, wpabuf_mhead(buf
), wpabuf_size(buf
));
2974 tls_show_errors(MSG_INFO
, __func__
,
2975 "Encryption failed - BIO_read");
2979 wpabuf_put(buf
, res
);
2985 struct wpabuf
* tls_connection_decrypt(void *tls_ctx
,
2986 struct tls_connection
*conn
,
2987 const struct wpabuf
*in_data
)
2992 /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
2993 res
= BIO_write(conn
->ssl_in
, wpabuf_head(in_data
),
2994 wpabuf_len(in_data
));
2996 tls_show_errors(MSG_INFO
, __func__
,
2997 "Decryption failed - BIO_write");
3000 if (BIO_reset(conn
->ssl_out
) < 0) {
3001 tls_show_errors(MSG_INFO
, __func__
, "BIO_reset failed");
3005 /* Read decrypted data for further processing */
3007 * Even though we try to disable TLS compression, it is possible that
3008 * this cannot be done with all TLS libraries. Add extra buffer space
3009 * to handle the possibility of the decrypted data being longer than
3012 buf
= wpabuf_alloc((wpabuf_len(in_data
) + 500) * 3);
3015 res
= SSL_read(conn
->ssl
, wpabuf_mhead(buf
), wpabuf_size(buf
));
3017 tls_show_errors(MSG_INFO
, __func__
,
3018 "Decryption failed - SSL_read");
3022 wpabuf_put(buf
, res
);
3024 if (conn
->invalid_hb_used
) {
3025 wpa_printf(MSG_INFO
, "TLS: Heartbeat attack detected - do not send response");
3034 int tls_connection_resumed(void *ssl_ctx
, struct tls_connection
*conn
)
3036 #if OPENSSL_VERSION_NUMBER >= 0x10001000L
3037 return conn
? SSL_cache_hit(conn
->ssl
) : 0;
3039 return conn
? conn
->ssl
->hit
: 0;
3044 int tls_connection_set_cipher_list(void *tls_ctx
, struct tls_connection
*conn
,
3047 char buf
[100], *pos
, *end
;
3051 if (conn
== NULL
|| conn
->ssl
== NULL
|| ciphers
== NULL
)
3056 end
= pos
+ sizeof(buf
);
3059 while (*c
!= TLS_CIPHER_NONE
) {
3063 case TLS_CIPHER_RC4_SHA
:
3066 case TLS_CIPHER_AES128_SHA
:
3067 suite
= "AES128-SHA";
3069 case TLS_CIPHER_RSA_DHE_AES128_SHA
:
3070 suite
= "DHE-RSA-AES128-SHA";
3072 case TLS_CIPHER_ANON_DH_AES128_SHA
:
3073 suite
= "ADH-AES128-SHA";
3076 wpa_printf(MSG_DEBUG
, "TLS: Unsupported "
3077 "cipher selection: %d", *c
);
3080 ret
= os_snprintf(pos
, end
- pos
, ":%s", suite
);
3081 if (os_snprintf_error(end
- pos
, ret
))
3088 wpa_printf(MSG_DEBUG
, "OpenSSL: cipher suites: %s", buf
+ 1);
3090 if (SSL_set_cipher_list(conn
->ssl
, buf
+ 1) != 1) {
3091 tls_show_errors(MSG_INFO
, __func__
,
3092 "Cipher suite configuration failed");
3100 int tls_get_cipher(void *ssl_ctx
, struct tls_connection
*conn
,
3101 char *buf
, size_t buflen
)
3104 if (conn
== NULL
|| conn
->ssl
== NULL
)
3107 name
= SSL_get_cipher(conn
->ssl
);
3111 os_strlcpy(buf
, name
, buflen
);
3116 int tls_connection_enable_workaround(void *ssl_ctx
,
3117 struct tls_connection
*conn
)
3119 SSL_set_options(conn
->ssl
, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS
);
3125 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3126 /* ClientHello TLS extensions require a patch to openssl, so this function is
3127 * commented out unless explicitly needed for EAP-FAST in order to be able to
3128 * build this file with unmodified openssl. */
3129 int tls_connection_client_hello_ext(void *ssl_ctx
, struct tls_connection
*conn
,
3130 int ext_type
, const u8
*data
,
3133 if (conn
== NULL
|| conn
->ssl
== NULL
|| ext_type
!= 35)
3136 if (SSL_set_session_ticket_ext(conn
->ssl
, (void *) data
,
3142 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3145 int tls_connection_get_failed(void *ssl_ctx
, struct tls_connection
*conn
)
3149 return conn
->failed
;
3153 int tls_connection_get_read_alerts(void *ssl_ctx
, struct tls_connection
*conn
)
3157 return conn
->read_alerts
;
3161 int tls_connection_get_write_alerts(void *ssl_ctx
, struct tls_connection
*conn
)
3165 return conn
->write_alerts
;
3171 static void ocsp_debug_print_resp(OCSP_RESPONSE
*rsp
)
3173 #ifndef CONFIG_NO_STDOUT_DEBUG
3179 if (wpa_debug_level
> MSG_DEBUG
)
3182 out
= BIO_new(BIO_s_mem());
3186 OCSP_RESPONSE_print(out
, rsp
, 0);
3187 rlen
= BIO_ctrl_pending(out
);
3188 txt
= os_malloc(rlen
+ 1);
3194 res
= BIO_read(out
, txt
, rlen
);
3197 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP Response\n%s", txt
);
3201 #endif /* CONFIG_NO_STDOUT_DEBUG */
3205 static void debug_print_cert(X509
*cert
, const char *title
)
3207 #ifndef CONFIG_NO_STDOUT_DEBUG
3213 if (wpa_debug_level
> MSG_DEBUG
)
3216 out
= BIO_new(BIO_s_mem());
3220 X509_print(out
, cert
);
3221 rlen
= BIO_ctrl_pending(out
);
3222 txt
= os_malloc(rlen
+ 1);
3228 res
= BIO_read(out
, txt
, rlen
);
3231 wpa_printf(MSG_DEBUG
, "OpenSSL: %s\n%s", title
, txt
);
3236 #endif /* CONFIG_NO_STDOUT_DEBUG */
3240 static int ocsp_resp_cb(SSL
*s
, void *arg
)
3242 struct tls_connection
*conn
= arg
;
3243 const unsigned char *p
;
3244 int len
, status
, reason
;
3246 OCSP_BASICRESP
*basic
;
3248 ASN1_GENERALIZEDTIME
*produced_at
, *this_update
, *next_update
;
3250 STACK_OF(X509
) *certs
= NULL
;
3252 len
= SSL_get_tlsext_status_ocsp_resp(s
, &p
);
3254 wpa_printf(MSG_DEBUG
, "OpenSSL: No OCSP response received");
3255 return (conn
->flags
& TLS_CONN_REQUIRE_OCSP
) ? 0 : 1;
3258 wpa_hexdump(MSG_DEBUG
, "OpenSSL: OCSP response", p
, len
);
3260 rsp
= d2i_OCSP_RESPONSE(NULL
, &p
, len
);
3262 wpa_printf(MSG_INFO
, "OpenSSL: Failed to parse OCSP response");
3266 ocsp_debug_print_resp(rsp
);
3268 status
= OCSP_response_status(rsp
);
3269 if (status
!= OCSP_RESPONSE_STATUS_SUCCESSFUL
) {
3270 wpa_printf(MSG_INFO
, "OpenSSL: OCSP responder error %d (%s)",
3271 status
, OCSP_response_status_str(status
));
3275 basic
= OCSP_response_get1_basic(rsp
);
3277 wpa_printf(MSG_INFO
, "OpenSSL: Could not find BasicOCSPResponse");
3281 store
= SSL_CTX_get_cert_store(conn
->ssl_ctx
);
3282 if (conn
->peer_issuer
) {
3283 debug_print_cert(conn
->peer_issuer
, "Add OCSP issuer");
3285 if (X509_STORE_add_cert(store
, conn
->peer_issuer
) != 1) {
3286 tls_show_errors(MSG_INFO
, __func__
,
3287 "OpenSSL: Could not add issuer to certificate store");
3289 certs
= sk_X509_new_null();
3292 cert
= X509_dup(conn
->peer_issuer
);
3293 if (cert
&& !sk_X509_push(certs
, cert
)) {
3296 "OpenSSL: Could not add issuer to OCSP responder trust store");
3298 sk_X509_free(certs
);
3301 if (certs
&& conn
->peer_issuer_issuer
) {
3302 cert
= X509_dup(conn
->peer_issuer_issuer
);
3303 if (cert
&& !sk_X509_push(certs
, cert
)) {
3306 "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
3313 status
= OCSP_basic_verify(basic
, certs
, store
, OCSP_TRUSTOTHER
);
3314 sk_X509_pop_free(certs
, X509_free
);
3316 tls_show_errors(MSG_INFO
, __func__
,
3317 "OpenSSL: OCSP response failed verification");
3318 OCSP_BASICRESP_free(basic
);
3319 OCSP_RESPONSE_free(rsp
);
3323 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP response verification succeeded");
3325 if (!conn
->peer_cert
) {
3326 wpa_printf(MSG_DEBUG
, "OpenSSL: Peer certificate not available for OCSP status check");
3327 OCSP_BASICRESP_free(basic
);
3328 OCSP_RESPONSE_free(rsp
);
3332 if (!conn
->peer_issuer
) {
3333 wpa_printf(MSG_DEBUG
, "OpenSSL: Peer issuer certificate not available for OCSP status check");
3334 OCSP_BASICRESP_free(basic
);
3335 OCSP_RESPONSE_free(rsp
);
3339 id
= OCSP_cert_to_id(NULL
, conn
->peer_cert
, conn
->peer_issuer
);
3341 wpa_printf(MSG_DEBUG
, "OpenSSL: Could not create OCSP certificate identifier");
3342 OCSP_BASICRESP_free(basic
);
3343 OCSP_RESPONSE_free(rsp
);
3347 if (!OCSP_resp_find_status(basic
, id
, &status
, &reason
, &produced_at
,
3348 &this_update
, &next_update
)) {
3349 wpa_printf(MSG_INFO
, "OpenSSL: Could not find current server certificate from OCSP response%s",
3350 (conn
->flags
& TLS_CONN_REQUIRE_OCSP
) ? "" :
3351 " (OCSP not required)");
3352 OCSP_BASICRESP_free(basic
);
3353 OCSP_RESPONSE_free(rsp
);
3354 return (conn
->flags
& TLS_CONN_REQUIRE_OCSP
) ? 0 : 1;
3357 if (!OCSP_check_validity(this_update
, next_update
, 5 * 60, -1)) {
3358 tls_show_errors(MSG_INFO
, __func__
,
3359 "OpenSSL: OCSP status times invalid");
3360 OCSP_BASICRESP_free(basic
);
3361 OCSP_RESPONSE_free(rsp
);
3365 OCSP_BASICRESP_free(basic
);
3366 OCSP_RESPONSE_free(rsp
);
3368 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP status for server certificate: %s",
3369 OCSP_cert_status_str(status
));
3371 if (status
== V_OCSP_CERTSTATUS_GOOD
)
3373 if (status
== V_OCSP_CERTSTATUS_REVOKED
)
3375 if (conn
->flags
& TLS_CONN_REQUIRE_OCSP
) {
3376 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP status unknown, but OCSP required");
3379 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue");
3384 static int ocsp_status_cb(SSL
*s
, void *arg
)
3390 if (tls_global
->ocsp_stapling_response
== NULL
) {
3391 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP status callback - no response configured");
3392 return SSL_TLSEXT_ERR_OK
;
3395 resp
= os_readfile(tls_global
->ocsp_stapling_response
, &len
);
3397 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP status callback - could not read response file");
3398 /* TODO: Build OCSPResponse with responseStatus = internalError
3400 return SSL_TLSEXT_ERR_OK
;
3402 wpa_printf(MSG_DEBUG
, "OpenSSL: OCSP status callback - send cached response");
3403 tmp
= OPENSSL_malloc(len
);
3406 return SSL_TLSEXT_ERR_ALERT_FATAL
;
3409 os_memcpy(tmp
, resp
, len
);
3411 SSL_set_tlsext_status_ocsp_resp(s
, tmp
, len
);
3413 return SSL_TLSEXT_ERR_OK
;
3416 #endif /* HAVE_OCSP */
3419 int tls_connection_set_params(void *tls_ctx
, struct tls_connection
*conn
,
3420 const struct tls_connection_params
*params
)
3425 const char *key_id
= params
->key_id
;
3426 const char *cert_id
= params
->cert_id
;
3427 const char *ca_cert_id
= params
->ca_cert_id
;
3428 const char *engine_id
= params
->engine
? params
->engine_id
: NULL
;
3434 * If the engine isn't explicitly configured, and any of the
3435 * cert/key fields are actually PKCS#11 URIs, then automatically
3436 * use the PKCS#11 ENGINE.
3438 if (!engine_id
|| os_strcmp(engine_id
, "pkcs11") == 0)
3441 if (!key_id
&& params
->private_key
&& can_pkcs11
&&
3442 os_strncmp(params
->private_key
, "pkcs11:", 7) == 0) {
3444 key_id
= params
->private_key
;
3447 if (!cert_id
&& params
->client_cert
&& can_pkcs11
&&
3448 os_strncmp(params
->client_cert
, "pkcs11:", 7) == 0) {
3450 cert_id
= params
->client_cert
;
3453 if (!ca_cert_id
&& params
->ca_cert
&& can_pkcs11
&&
3454 os_strncmp(params
->ca_cert
, "pkcs11:", 7) == 0) {
3456 ca_cert_id
= params
->ca_cert
;
3459 /* If we need to automatically enable the PKCS#11 ENGINE, do so. */
3460 if (can_pkcs11
== 2 && !engine_id
)
3461 engine_id
= "pkcs11";
3463 if (params
->flags
& TLS_CONN_EAP_FAST
) {
3464 wpa_printf(MSG_DEBUG
,
3465 "OpenSSL: Use TLSv1_method() for EAP-FAST");
3466 if (SSL_set_ssl_method(conn
->ssl
, TLSv1_method()) != 1) {
3467 tls_show_errors(MSG_INFO
, __func__
,
3468 "Failed to set TLSv1_method() for EAP-FAST");
3473 while ((err
= ERR_get_error())) {
3474 wpa_printf(MSG_INFO
, "%s: Clearing pending SSL error: %s",
3475 __func__
, ERR_error_string(err
, NULL
));
3479 wpa_printf(MSG_DEBUG
, "SSL: Initializing TLS engine");
3480 ret
= tls_engine_init(conn
, engine_id
, params
->pin
,
3481 key_id
, cert_id
, ca_cert_id
);
3485 if (tls_connection_set_subject_match(conn
,
3486 params
->subject_match
,
3487 params
->altsubject_match
,
3488 params
->suffix_match
,
3489 params
->domain_match
))
3492 if (engine_id
&& ca_cert_id
) {
3493 if (tls_connection_engine_ca_cert(tls_ctx
, conn
,
3495 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED
;
3496 } else if (tls_connection_ca_cert(tls_ctx
, conn
, params
->ca_cert
,
3497 params
->ca_cert_blob
,
3498 params
->ca_cert_blob_len
,
3502 if (engine_id
&& cert_id
) {
3503 if (tls_connection_engine_client_cert(conn
, cert_id
))
3504 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED
;
3505 } else if (tls_connection_client_cert(conn
, params
->client_cert
,
3506 params
->client_cert_blob
,
3507 params
->client_cert_blob_len
))
3510 if (engine_id
&& key_id
) {
3511 wpa_printf(MSG_DEBUG
, "TLS: Using private key from engine");
3512 if (tls_connection_engine_private_key(conn
))
3513 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED
;
3514 } else if (tls_connection_private_key(tls_ctx
, conn
,
3515 params
->private_key
,
3516 params
->private_key_passwd
,
3517 params
->private_key_blob
,
3518 params
->private_key_blob_len
)) {
3519 wpa_printf(MSG_INFO
, "TLS: Failed to load private key '%s'",
3520 params
->private_key
);
3524 if (tls_connection_dh(conn
, params
->dh_file
)) {
3525 wpa_printf(MSG_INFO
, "TLS: Failed to load DH file '%s'",
3530 if (params
->openssl_ciphers
&&
3531 SSL_set_cipher_list(conn
->ssl
, params
->openssl_ciphers
) != 1) {
3532 wpa_printf(MSG_INFO
,
3533 "OpenSSL: Failed to set cipher string '%s'",
3534 params
->openssl_ciphers
);
3538 #ifdef SSL_OP_NO_TICKET
3539 if (params
->flags
& TLS_CONN_DISABLE_SESSION_TICKET
)
3540 SSL_set_options(conn
->ssl
, SSL_OP_NO_TICKET
);
3541 #ifdef SSL_clear_options
3543 SSL_clear_options(conn
->ssl
, SSL_OP_NO_TICKET
);
3544 #endif /* SSL_clear_options */
3545 #endif /* SSL_OP_NO_TICKET */
3547 #ifdef SSL_OP_NO_TLSv1_1
3548 if (params
->flags
& TLS_CONN_DISABLE_TLSv1_1
)
3549 SSL_set_options(conn
->ssl
, SSL_OP_NO_TLSv1_1
);
3551 SSL_clear_options(conn
->ssl
, SSL_OP_NO_TLSv1_1
);
3552 #endif /* SSL_OP_NO_TLSv1_1 */
3553 #ifdef SSL_OP_NO_TLSv1_2
3554 if (params
->flags
& TLS_CONN_DISABLE_TLSv1_2
)
3555 SSL_set_options(conn
->ssl
, SSL_OP_NO_TLSv1_2
);
3557 SSL_clear_options(conn
->ssl
, SSL_OP_NO_TLSv1_2
);
3558 #endif /* SSL_OP_NO_TLSv1_2 */
3561 if (params
->flags
& TLS_CONN_REQUEST_OCSP
) {
3562 SSL_CTX
*ssl_ctx
= tls_ctx
;
3563 SSL_set_tlsext_status_type(conn
->ssl
, TLSEXT_STATUSTYPE_ocsp
);
3564 SSL_CTX_set_tlsext_status_cb(ssl_ctx
, ocsp_resp_cb
);
3565 SSL_CTX_set_tlsext_status_arg(ssl_ctx
, conn
);
3567 #endif /* HAVE_OCSP */
3569 conn
->flags
= params
->flags
;
3571 tls_get_errors(tls_ctx
);
3577 int tls_global_set_params(void *tls_ctx
,
3578 const struct tls_connection_params
*params
)
3580 SSL_CTX
*ssl_ctx
= tls_ctx
;
3583 while ((err
= ERR_get_error())) {
3584 wpa_printf(MSG_INFO
, "%s: Clearing pending SSL error: %s",
3585 __func__
, ERR_error_string(err
, NULL
));
3588 if (tls_global_ca_cert(ssl_ctx
, params
->ca_cert
) ||
3589 tls_global_client_cert(ssl_ctx
, params
->client_cert
) ||
3590 tls_global_private_key(ssl_ctx
, params
->private_key
,
3591 params
->private_key_passwd
) ||
3592 tls_global_dh(ssl_ctx
, params
->dh_file
)) {
3593 wpa_printf(MSG_INFO
, "TLS: Failed to set global parameters");
3597 if (params
->openssl_ciphers
&&
3598 SSL_CTX_set_cipher_list(ssl_ctx
, params
->openssl_ciphers
) != 1) {
3599 wpa_printf(MSG_INFO
,
3600 "OpenSSL: Failed to set cipher string '%s'",
3601 params
->openssl_ciphers
);
3605 #ifdef SSL_OP_NO_TICKET
3606 if (params
->flags
& TLS_CONN_DISABLE_SESSION_TICKET
)
3607 SSL_CTX_set_options(ssl_ctx
, SSL_OP_NO_TICKET
);
3608 #ifdef SSL_CTX_clear_options
3610 SSL_CTX_clear_options(ssl_ctx
, SSL_OP_NO_TICKET
);
3611 #endif /* SSL_clear_options */
3612 #endif /* SSL_OP_NO_TICKET */
3615 SSL_CTX_set_tlsext_status_cb(ssl_ctx
, ocsp_status_cb
);
3616 SSL_CTX_set_tlsext_status_arg(ssl_ctx
, ssl_ctx
);
3617 os_free(tls_global
->ocsp_stapling_response
);
3618 if (params
->ocsp_stapling_response
)
3619 tls_global
->ocsp_stapling_response
=
3620 os_strdup(params
->ocsp_stapling_response
);
3622 tls_global
->ocsp_stapling_response
= NULL
;
3623 #endif /* HAVE_OCSP */
3629 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3630 /* Pre-shared secred requires a patch to openssl, so this function is
3631 * commented out unless explicitly needed for EAP-FAST in order to be able to
3632 * build this file with unmodified openssl. */
3634 #ifdef OPENSSL_IS_BORINGSSL
3635 static int tls_sess_sec_cb(SSL
*s
, void *secret
, int *secret_len
,
3636 STACK_OF(SSL_CIPHER
) *peer_ciphers
,
3637 const SSL_CIPHER
**cipher
, void *arg
)
3638 #else /* OPENSSL_IS_BORINGSSL */
3639 static int tls_sess_sec_cb(SSL
*s
, void *secret
, int *secret_len
,
3640 STACK_OF(SSL_CIPHER
) *peer_ciphers
,
3641 SSL_CIPHER
**cipher
, void *arg
)
3642 #endif /* OPENSSL_IS_BORINGSSL */
3644 struct tls_connection
*conn
= arg
;
3647 if (conn
== NULL
|| conn
->session_ticket_cb
== NULL
)
3650 ret
= conn
->session_ticket_cb(conn
->session_ticket_cb_ctx
,
3651 conn
->session_ticket
,
3652 conn
->session_ticket_len
,
3653 s
->s3
->client_random
,
3654 s
->s3
->server_random
, secret
);
3655 os_free(conn
->session_ticket
);
3656 conn
->session_ticket
= NULL
;
3661 *secret_len
= SSL_MAX_MASTER_KEY_LENGTH
;
3666 static int tls_session_ticket_ext_cb(SSL
*s
, const unsigned char *data
,
3669 struct tls_connection
*conn
= arg
;
3671 if (conn
== NULL
|| conn
->session_ticket_cb
== NULL
)
3674 wpa_printf(MSG_DEBUG
, "OpenSSL: %s: length=%d", __func__
, len
);
3676 os_free(conn
->session_ticket
);
3677 conn
->session_ticket
= NULL
;
3679 wpa_hexdump(MSG_DEBUG
, "OpenSSL: ClientHello SessionTicket "
3680 "extension", data
, len
);
3682 conn
->session_ticket
= os_malloc(len
);
3683 if (conn
->session_ticket
== NULL
)
3686 os_memcpy(conn
->session_ticket
, data
, len
);
3687 conn
->session_ticket_len
= len
;
3691 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3694 int tls_connection_set_session_ticket_cb(void *tls_ctx
,
3695 struct tls_connection
*conn
,
3696 tls_session_ticket_cb cb
,
3699 #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3700 conn
->session_ticket_cb
= cb
;
3701 conn
->session_ticket_cb_ctx
= ctx
;
3704 if (SSL_set_session_secret_cb(conn
->ssl
, tls_sess_sec_cb
,
3707 SSL_set_session_ticket_ext_cb(conn
->ssl
,
3708 tls_session_ticket_ext_cb
, conn
);
3710 if (SSL_set_session_secret_cb(conn
->ssl
, NULL
, NULL
) != 1)
3712 SSL_set_session_ticket_ext_cb(conn
->ssl
, NULL
, NULL
);
3716 #else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3718 #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3722 int tls_get_library_version(char *buf
, size_t buf_len
)
3724 return os_snprintf(buf
, buf_len
, "OpenSSL build=%s run=%s",
3725 OPENSSL_VERSION_TEXT
,
3726 SSLeay_version(SSLEAY_VERSION
));