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OpenSSL: Add tls_connection_get_cipher_suite()
[thirdparty/hostap.git] / src / crypto / tls_openssl.c
CommitLineData
6fc6879b 1/*
81c85c06 2 * SSL/TLS interface functions for OpenSSL
16bc3b89 3 * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi>
6fc6879b 4 *
0f3d578e
JM		 5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
6fc6879b
JM		 7 */
8
9#include "includes.h"
10
11#ifndef CONFIG_SMARTCARD
12#ifndef OPENSSL_NO_ENGINE
1176ab6d 13#ifndef ANDROID
6fc6879b
JM		 14#define OPENSSL_NO_ENGINE
15#endif
16#endif
1176ab6d 17#endif
6fc6879b
JM		 18
19#include <openssl/ssl.h>
20#include <openssl/err.h>
e4471338 21#include <openssl/opensslv.h>
6fc6879b
JM		 22#include <openssl/pkcs12.h>
23#include <openssl/x509v3.h>
24#ifndef OPENSSL_NO_ENGINE
25#include <openssl/engine.h>
26#endif /* OPENSSL_NO_ENGINE */
690e543e
JM		 27#ifndef OPENSSL_NO_DSA
28#include <openssl/dsa.h>
29#endif
30#ifndef OPENSSL_NO_DH
31#include <openssl/dh.h>
32#endif
6fc6879b
JM		 33
34#include "common.h"
00468b46 35#include "crypto.h"
fa0e7151 36#include "sha1.h"
16bc3b89 37#include "sha256.h"
6fc6879b 38#include "tls.h"
213e158c 39#include "tls_openssl.h"
6fc6879b 40
1cece2fa
DB		 41#if !defined(CONFIG_FIPS) && \
42 (defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || \
43 defined(EAP_SERVER_FAST))
44#define OPENSSL_NEED_EAP_FAST_PRF
45#endif
46
a8572960
AL		 47#if defined(OPENSSL_IS_BORINGSSL)
48/* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */
49typedef size_t stack_index_t;
50#else
51typedef int stack_index_t;
0cf03892
JM		 52#endif
53
080585c0
JM		 54#ifdef SSL_set_tlsext_status_type
55#ifndef OPENSSL_NO_TLSEXT
56#define HAVE_OCSP
57#include <openssl/ocsp.h>
58#endif /* OPENSSL_NO_TLSEXT */
59#endif /* SSL_set_tlsext_status_type */
60
e4471338 61#if (OPENSSL_VERSION_NUMBER < 0x10100000L || \
ba3658cf
BS		 62 (defined(LIBRESSL_VERSION_NUMBER) && \
63 LIBRESSL_VERSION_NUMBER < 0x20700000L)) && \
e4471338 64 !defined(BORINGSSL_API_VERSION)
dea20519
JM		 65/*
66 * SSL_get_client_random() and SSL_get_server_random() were added in OpenSSL
e4471338
DB		 67 * 1.1.0 and newer BoringSSL revisions. Provide compatibility wrappers for
68 * older versions.
dea20519
JM		 69 */
70
71static size_t SSL_get_client_random(const SSL *ssl, unsigned char *out,
72 size_t outlen)
73{
74 if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE)
75 return 0;
76 os_memcpy(out, ssl->s3->client_random, SSL3_RANDOM_SIZE);
77 return SSL3_RANDOM_SIZE;
78}
79
80
81static size_t SSL_get_server_random(const SSL *ssl, unsigned char *out,
82 size_t outlen)
83{
84 if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE)
85 return 0;
86 os_memcpy(out, ssl->s3->server_random, SSL3_RANDOM_SIZE);
87 return SSL3_RANDOM_SIZE;
88}
89
1ebb24bb 90
1cece2fa 91#ifdef OPENSSL_NEED_EAP_FAST_PRF
1ebb24bb
JM		 92static size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
93 unsigned char *out, size_t outlen)
94{
95 if (!session || session->master_key_length < 0 ||
96 (size_t) session->master_key_length > outlen)
97 return 0;
98 if ((size_t) session->master_key_length < outlen)
99 outlen = session->master_key_length;
100 os_memcpy(out, session->master_key, outlen);
101 return outlen;
102}
1cece2fa 103#endif /* OPENSSL_NEED_EAP_FAST_PRF */
1ebb24bb 104
dea20519
JM		 105#endif
106
837e3658
AU		 107#if OPENSSL_VERSION_NUMBER < 0x10100000L || \
108 (defined(LIBRESSL_VERSION_NUMBER) && \
109 LIBRESSL_VERSION_NUMBER < 0x20700000L)
4eb8cfe0
JM		 110#ifdef CONFIG_SUITEB
111static int RSA_bits(const RSA *r)
112{
113 return BN_num_bits(r->n);
114}
115#endif /* CONFIG_SUITEB */
2ff952a5
JM		 116
117
118static const unsigned char * ASN1_STRING_get0_data(const ASN1_STRING *x)
119{
120 return ASN1_STRING_data((ASN1_STRING *) x);
121}
4eb8cfe0
JM		 122#endif
123
1d415f1f
KR		 124#ifdef ANDROID
125#include <openssl/pem.h>
126#include <keystore/keystore_get.h>
127
128static BIO * BIO_from_keystore(const char *key)
129{
130 BIO *bio = NULL;
131 uint8_t *value = NULL;
132 int length = keystore_get(key, strlen(key), &value);
133 if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL)
134 BIO_write(bio, value, length);
135 free(value);
136 return bio;
137}
a8ef133f
RX		 138
139
140static int tls_add_ca_from_keystore(X509_STORE *ctx, const char *key_alias)
141{
142 BIO *bio = BIO_from_keystore(key_alias);
143 STACK_OF(X509_INFO) *stack = NULL;
144 stack_index_t i;
145
146 if (bio) {
147 stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL);
148 BIO_free(bio);
149 }
150
151 if (!stack) {
152 wpa_printf(MSG_WARNING, "TLS: Failed to parse certificate: %s",
153 key_alias);
154 return -1;
155 }
156
157 for (i = 0; i < sk_X509_INFO_num(stack); ++i) {
158 X509_INFO *info = sk_X509_INFO_value(stack, i);
159
160 if (info->x509)
161 X509_STORE_add_cert(ctx, info->x509);
162 if (info->crl)
163 X509_STORE_add_crl(ctx, info->crl);
164 }
165
166 sk_X509_INFO_pop_free(stack, X509_INFO_free);
167
168 return 0;
169}
170
171
172static int tls_add_ca_from_keystore_encoded(X509_STORE *ctx,
173 const char *encoded_key_alias)
174{
175 int rc = -1;
176 int len = os_strlen(encoded_key_alias);
177 unsigned char *decoded_alias;
178
179 if (len & 1) {
180 wpa_printf(MSG_WARNING, "Invalid hex-encoded alias: %s",
181 encoded_key_alias);
182 return rc;
183 }
184
185 decoded_alias = os_malloc(len / 2 + 1);
186 if (decoded_alias) {
187 if (!hexstr2bin(encoded_key_alias, decoded_alias, len / 2)) {
188 decoded_alias[len / 2] = '\0';
189 rc = tls_add_ca_from_keystore(
190 ctx, (const char *) decoded_alias);
191 }
192 os_free(decoded_alias);
193 }
194
195 return rc;
196}
197
1d415f1f
KR		 198#endif /* ANDROID */
199
6fc6879b 200static int tls_openssl_ref_count = 0;
acf36f31 201static int tls_ex_idx_session = -1;
6fc6879b 202
7c0e1e27 203struct tls_context {
00468b46
JM		 204 void (*event_cb)(void *ctx, enum tls_event ev,
205 union tls_event_data *data);
206 void *cb_ctx;
1b414f59 207 int cert_in_cb;
080585c0 208 char *ocsp_stapling_response;
00468b46
JM		 209};
210
7c0e1e27 211static struct tls_context *tls_global = NULL;
00468b46
JM		 212
213
bd9b8b2b
JM		 214struct tls_data {
215 SSL_CTX *ssl;
acf36f31 216 unsigned int tls_session_lifetime;
159a7fbd 217 int check_crl;
dd5d325b 218 int check_crl_strict;
159a7fbd
JB		 219 char *ca_cert;
220 unsigned int crl_reload_interval;
221 struct os_reltime crl_last_reload;
841205a1 222 char *check_cert_subject;
bd9b8b2b
JM		 223};
224
6fc6879b 225struct tls_connection {
7c0e1e27 226 struct tls_context *context;
dd5d325b 227 struct tls_data *data;
68ae4773 228 SSL_CTX *ssl_ctx;
6fc6879b
JM		 229 SSL *ssl;
230 BIO *ssl_in, *ssl_out;
aeeb0bca 231#if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
6fc6879b
JM		 232 ENGINE *engine; /* functional reference to the engine */
233 EVP_PKEY *private_key; /* the private key if using engine */
234#endif /* OPENSSL_NO_ENGINE */
cebee30f 235 char *subject_match, *altsubject_match, *suffix_match, *domain_match;
841205a1 236 char *check_cert_subject;
6fc6879b
JM		 237 int read_alerts, write_alerts, failed;
238
239 tls_session_ticket_cb session_ticket_cb;
240 void *session_ticket_cb_ctx;
241
242 /* SessionTicket received from OpenSSL hello_extension_cb (server) */
243 u8 *session_ticket;
244 size_t session_ticket_len;
00468b46 245
8d6399e4
JM		 246 unsigned int ca_cert_verify:1;
247 unsigned int cert_probe:1;
248 unsigned int server_cert_only:1;
bb52293e 249 unsigned int invalid_hb_used:1;
acf36f31 250 unsigned int success_data:1;
4a576c47 251 unsigned int client_hello_generated:1;
53b34578 252 unsigned int server:1;
00468b46
JM		 253
254 u8 srv_cert_hash[32];
235279e7
JM		 255
256 unsigned int flags;
080585c0
JM		 257
258 X509 *peer_cert;
259 X509 *peer_issuer;
6bf61fb2 260 X509 *peer_issuer_issuer;
005c5dcf 261
005c5dcf
JM		 262 unsigned char client_random[SSL3_RANDOM_SIZE];
263 unsigned char server_random[SSL3_RANDOM_SIZE];
1c9663cf
JM		 264
265 u16 cipher_suite;
266 int server_dh_prime_len;
6fc6879b
JM		 267};
268
269
7c0e1e27
PS		 270static struct tls_context * tls_context_new(const struct tls_config *conf)
271{
272 struct tls_context *context = os_zalloc(sizeof(*context));
273 if (context == NULL)
274 return NULL;
275 if (conf) {
276 context->event_cb = conf->event_cb;
277 context->cb_ctx = conf->cb_ctx;
278 context->cert_in_cb = conf->cert_in_cb;
279 }
280 return context;
281}
282
283
6fc6879b
JM		 284#ifdef CONFIG_NO_STDOUT_DEBUG
285
286static void _tls_show_errors(void)
287{
288 unsigned long err;
289
290 while ((err = ERR_get_error())) {
291 /* Just ignore the errors, since stdout is disabled */
292 }
293}
294#define tls_show_errors(l, f, t) _tls_show_errors()
295
296#else /* CONFIG_NO_STDOUT_DEBUG */
297
298static void tls_show_errors(int level, const char *func, const char *txt)
299{
300 unsigned long err;
301
302 wpa_printf(level, "OpenSSL: %s - %s %s",
303 func, txt, ERR_error_string(ERR_get_error(), NULL));
304
305 while ((err = ERR_get_error())) {
306 wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
307 ERR_error_string(err, NULL));
308 }
309}
310
311#endif /* CONFIG_NO_STDOUT_DEBUG */
312
313
159a7fbd
JB		 314static X509_STORE * tls_crl_cert_reload(const char *ca_cert, int check_crl)
315{
316 int flags;
317 X509_STORE *store;
318
319 store = X509_STORE_new();
320 if (!store) {
321 wpa_printf(MSG_DEBUG,
322 "OpenSSL: %s - failed to allocate new certificate store",
323 __func__);
324 return NULL;
325 }
326
327 if (ca_cert && X509_STORE_load_locations(store, ca_cert, NULL) != 1) {
328 tls_show_errors(MSG_WARNING, __func__,
329 "Failed to load root certificates");
330 X509_STORE_free(store);
331 return NULL;
332 }
333
91205c8e 334 flags = check_crl ? X509_V_FLAG_CRL_CHECK : 0;
159a7fbd
JB		 335 if (check_crl == 2)
336 flags |= X509_V_FLAG_CRL_CHECK_ALL;
337
338 X509_STORE_set_flags(store, flags);
339
340 return store;
341}
342
343
6fc6879b
JM		 344#ifdef CONFIG_NATIVE_WINDOWS
345
346/* Windows CryptoAPI and access to certificate stores */
347#include <wincrypt.h>
348
349#ifdef __MINGW32_VERSION
350/*
351 * MinGW does not yet include all the needed definitions for CryptoAPI, so
352 * define here whatever extra is needed.
353 */
6fc6879b
JM		 354#define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
355#define CERT_STORE_READONLY_FLAG 0x00008000
356#define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
6fc6879b
JM		 357
358#endif /* __MINGW32_VERSION */
359
360
361struct cryptoapi_rsa_data {
362 const CERT_CONTEXT *cert;
363 HCRYPTPROV crypt_prov;
364 DWORD key_spec;
365 BOOL free_crypt_prov;
366};
367
368
369static void cryptoapi_error(const char *msg)
370{
371 wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
372 msg, (unsigned int) GetLastError());
373}
374
375
376static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
377 unsigned char *to, RSA *rsa, int padding)
378{
379 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
380 return 0;
381}
382
383
384static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
385 unsigned char *to, RSA *rsa, int padding)
386{
387 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
388 return 0;
389}
390
391
392static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
393 unsigned char *to, RSA *rsa, int padding)
394{
395 struct cryptoapi_rsa_data *priv =
396 (struct cryptoapi_rsa_data *) rsa->meth->app_data;
397 HCRYPTHASH hash;
398 DWORD hash_size, len, i;
399 unsigned char *buf = NULL;
400 int ret = 0;
401
402 if (priv == NULL) {
403 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
404 ERR_R_PASSED_NULL_PARAMETER);
405 return 0;
406 }
407
408 if (padding != RSA_PKCS1_PADDING) {
409 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
410 RSA_R_UNKNOWN_PADDING_TYPE);
411 return 0;
412 }
413
414 if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
415 wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
416 __func__);
417 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
418 RSA_R_INVALID_MESSAGE_LENGTH);
419 return 0;
420 }
421
422 if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
423 {
424 cryptoapi_error("CryptCreateHash failed");
425 return 0;
426 }
427
428 len = sizeof(hash_size);
429 if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
430 0)) {
431 cryptoapi_error("CryptGetHashParam failed");
432 goto err;
433 }
434
435 if ((int) hash_size != flen) {
436 wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
437 (unsigned) hash_size, flen);
438 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
439 RSA_R_INVALID_MESSAGE_LENGTH);
440 goto err;
441 }
442 if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
443 cryptoapi_error("CryptSetHashParam failed");
444 goto err;
445 }
446
447 len = RSA_size(rsa);
448 buf = os_malloc(len);
449 if (buf == NULL) {
450 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
451 goto err;
452 }
453
454 if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
455 cryptoapi_error("CryptSignHash failed");
456 goto err;
457 }
458
459 for (i = 0; i < len; i++)
460 to[i] = buf[len - i - 1];
461 ret = len;
462
463err:
464 os_free(buf);
465 CryptDestroyHash(hash);
466
467 return ret;
468}
469
470
471static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
472 unsigned char *to, RSA *rsa, int padding)
473{
474 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
475 return 0;
476}
477
478
479static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
480{
481 if (priv == NULL)
482 return;
483 if (priv->crypt_prov && priv->free_crypt_prov)
484 CryptReleaseContext(priv->crypt_prov, 0);
485 if (priv->cert)
486 CertFreeCertificateContext(priv->cert);
487 os_free(priv);
488}
489
490
491static int cryptoapi_finish(RSA *rsa)
492{
493 cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
494 os_free((void *) rsa->meth);
495 rsa->meth = NULL;
496 return 1;
497}
498
499
500static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
501{
502 HCERTSTORE cs;
503 const CERT_CONTEXT *ret = NULL;
504
505 cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
506 store | CERT_STORE_OPEN_EXISTING_FLAG |
507 CERT_STORE_READONLY_FLAG, L"MY");
508 if (cs == NULL) {
509 cryptoapi_error("Failed to open 'My system store'");
510 return NULL;
511 }
512
513 if (strncmp(name, "cert://", 7) == 0) {
514 unsigned short wbuf[255];
515 MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
516 ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
517 PKCS_7_ASN_ENCODING,
518 0, CERT_FIND_SUBJECT_STR,
519 wbuf, NULL);
520 } else if (strncmp(name, "hash://", 7) == 0) {
521 CRYPT_HASH_BLOB blob;
522 int len;
523 const char *hash = name + 7;
524 unsigned char *buf;
525
526 len = os_strlen(hash) / 2;
527 buf = os_malloc(len);
528 if (buf && hexstr2bin(hash, buf, len) == 0) {
529 blob.cbData = len;
530 blob.pbData = buf;
531 ret = CertFindCertificateInStore(cs,
532 X509_ASN_ENCODING |
533 PKCS_7_ASN_ENCODING,
534 0, CERT_FIND_HASH,
535 &blob, NULL);
536 }
537 os_free(buf);
538 }
539
540 CertCloseStore(cs, 0);
541
542 return ret;
543}
544
545
546static int tls_cryptoapi_cert(SSL *ssl, const char *name)
547{
548 X509 *cert = NULL;
549 RSA *rsa = NULL, *pub_rsa;
550 struct cryptoapi_rsa_data *priv;
551 RSA_METHOD *rsa_meth;
552
553 if (name == NULL ||
554 (strncmp(name, "cert://", 7) != 0 &&
555 strncmp(name, "hash://", 7) != 0))
556 return -1;
557
558 priv = os_zalloc(sizeof(*priv));
559 rsa_meth = os_zalloc(sizeof(*rsa_meth));
560 if (priv == NULL || rsa_meth == NULL) {
561 wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
562 "for CryptoAPI RSA method");
563 os_free(priv);
564 os_free(rsa_meth);
565 return -1;
566 }
567
568 priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
569 if (priv->cert == NULL) {
570 priv->cert = cryptoapi_find_cert(
571 name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
572 }
573 if (priv->cert == NULL) {
574 wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
575 "'%s'", name);
576 goto err;
577 }
578
fee31f76
JM		 579 cert = d2i_X509(NULL,
580 (const unsigned char **) &priv->cert->pbCertEncoded,
6fc6879b
JM		 581 priv->cert->cbCertEncoded);
582 if (cert == NULL) {
583 wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
584 "encoding");
585 goto err;
586 }
587
6fc6879b
JM		 588 if (!CryptAcquireCertificatePrivateKey(priv->cert,
589 CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
590 NULL, &priv->crypt_prov,
591 &priv->key_spec,
592 &priv->free_crypt_prov)) {
593 cryptoapi_error("Failed to acquire a private key for the "
594 "certificate");
595 goto err;
596 }
597
598 rsa_meth->name = "Microsoft CryptoAPI RSA Method";
599 rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
600 rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
601 rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
602 rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
603 rsa_meth->finish = cryptoapi_finish;
604 rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
605 rsa_meth->app_data = (char *) priv;
606
607 rsa = RSA_new();
608 if (rsa == NULL) {
609 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
610 ERR_R_MALLOC_FAILURE);
611 goto err;
612 }
613
614 if (!SSL_use_certificate(ssl, cert)) {
615 RSA_free(rsa);
616 rsa = NULL;
617 goto err;
618 }
619 pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
620 X509_free(cert);
621 cert = NULL;
622
623 rsa->n = BN_dup(pub_rsa->n);
624 rsa->e = BN_dup(pub_rsa->e);
625 if (!RSA_set_method(rsa, rsa_meth))
626 goto err;
627
628 if (!SSL_use_RSAPrivateKey(ssl, rsa))
629 goto err;
630 RSA_free(rsa);
631
632 return 0;
633
634err:
635 if (cert)
636 X509_free(cert);
637 if (rsa)
638 RSA_free(rsa);
639 else {
640 os_free(rsa_meth);
641 cryptoapi_free_data(priv);
642 }
643 return -1;
644}
645
646
647static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
648{
649 HCERTSTORE cs;
650 PCCERT_CONTEXT ctx = NULL;
651 X509 *cert;
652 char buf[128];
653 const char *store;
654#ifdef UNICODE
655 WCHAR *wstore;
656#endif /* UNICODE */
657
6fc6879b
JM		 658 if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
659 return -1;
660
661 store = name + 13;
662#ifdef UNICODE
663 wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
664 if (wstore == NULL)
665 return -1;
666 wsprintf(wstore, L"%S", store);
667 cs = CertOpenSystemStore(0, wstore);
668 os_free(wstore);
669#else /* UNICODE */
670 cs = CertOpenSystemStore(0, store);
671#endif /* UNICODE */
672 if (cs == NULL) {
673 wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
674 "'%s': error=%d", __func__, store,
675 (int) GetLastError());
676 return -1;
677 }
678
679 while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
fee31f76
JM		 680 cert = d2i_X509(NULL,
681 (const unsigned char **) &ctx->pbCertEncoded,
6fc6879b
JM		 682 ctx->cbCertEncoded);
683 if (cert == NULL) {
684 wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
685 "X509 DER encoding for CA cert");
686 continue;
687 }
688
689 X509_NAME_oneline(X509_get_subject_name(cert), buf,
690 sizeof(buf));
691 wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
692 "system certificate store: subject='%s'", buf);
693
f150db6c
DB		 694 if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx),
695 cert)) {
6fc6879b
JM		 696 tls_show_errors(MSG_WARNING, __func__,
697 "Failed to add ca_cert to OpenSSL "
698 "certificate store");
699 }
700
701 X509_free(cert);
702 }
703
704 if (!CertCloseStore(cs, 0)) {
705 wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
706 "'%s': error=%d", __func__, name + 13,
707 (int) GetLastError());
708 }
709
710 return 0;
711}
712
713
714#else /* CONFIG_NATIVE_WINDOWS */
715
716static int tls_cryptoapi_cert(SSL *ssl, const char *name)
717{
718 return -1;
719}
720
721#endif /* CONFIG_NATIVE_WINDOWS */
722
723
724static void ssl_info_cb(const SSL *ssl, int where, int ret)
725{
726 const char *str;
727 int w;
728
729 wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
730 w = where & ~SSL_ST_MASK;
731 if (w & SSL_ST_CONNECT)
732 str = "SSL_connect";
733 else if (w & SSL_ST_ACCEPT)
734 str = "SSL_accept";
735 else
736 str = "undefined";
737
738 if (where & SSL_CB_LOOP) {
739 wpa_printf(MSG_DEBUG, "SSL: %s:%s",
740 str, SSL_state_string_long(ssl));
741 } else if (where & SSL_CB_ALERT) {
7c0e1e27 742 struct tls_connection *conn = SSL_get_app_data((SSL *) ssl);
6fc6879b
JM		 743 wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
744 where & SSL_CB_READ ?
745 "read (remote end reported an error)" :
746 "write (local SSL3 detected an error)",
747 SSL_alert_type_string_long(ret),
748 SSL_alert_desc_string_long(ret));
749 if ((ret >> 8) == SSL3_AL_FATAL) {
6fc6879b
JM		 750 if (where & SSL_CB_READ)
751 conn->read_alerts++;
752 else
753 conn->write_alerts++;
754 }
7c0e1e27 755 if (conn->context->event_cb != NULL) {
dd7fec1f 756 union tls_event_data ev;
7c0e1e27 757 struct tls_context *context = conn->context;
dd7fec1f
PS		 758 os_memset(&ev, 0, sizeof(ev));
759 ev.alert.is_local = !(where & SSL_CB_READ);
760 ev.alert.type = SSL_alert_type_string_long(ret);
761 ev.alert.description = SSL_alert_desc_string_long(ret);
7c0e1e27 762 context->event_cb(context->cb_ctx, TLS_ALERT, &ev);
dd7fec1f 763 }
6fc6879b
JM		 764 } else if (where & SSL_CB_EXIT && ret <= 0) {
765 wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
766 str, ret == 0 ? "failed" : "error",
767 SSL_state_string_long(ssl));
768 }
769}
770
771
772#ifndef OPENSSL_NO_ENGINE
773/**
774 * tls_engine_load_dynamic_generic - load any openssl engine
775 * @pre: an array of commands and values that load an engine initialized
776 * in the engine specific function
777 * @post: an array of commands and values that initialize an already loaded
778 * engine (or %NULL if not required)
779 * @id: the engine id of the engine to load (only required if post is not %NULL
780 *
781 * This function is a generic function that loads any openssl engine.
782 *
783 * Returns: 0 on success, -1 on failure
784 */
785static int tls_engine_load_dynamic_generic(const char *pre[],
786 const char *post[], const char *id)
787{
788 ENGINE *engine;
789 const char *dynamic_id = "dynamic";
790
791 engine = ENGINE_by_id(id);
792 if (engine) {
6fc6879b
JM		 793 wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
794 "available", id);
c3d7fb7e
DW		 795 /*
796 * If it was auto-loaded by ENGINE_by_id() we might still
797 * need to tell it which PKCS#11 module to use in legacy
798 * (non-p11-kit) environments. Do so now; even if it was
799 * properly initialised before, setting it again will be
800 * harmless.
801 */
802 goto found;
6fc6879b
JM		 803 }
804 ERR_clear_error();
805
806 engine = ENGINE_by_id(dynamic_id);
807 if (engine == NULL) {
808 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
809 dynamic_id,
810 ERR_error_string(ERR_get_error(), NULL));
811 return -1;
812 }
813
814 /* Perform the pre commands. This will load the engine. */
815 while (pre && pre[0]) {
816 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
817 if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
818 wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
819 "%s %s [%s]", pre[0], pre[1],
820 ERR_error_string(ERR_get_error(), NULL));
821 ENGINE_free(engine);
822 return -1;
823 }
824 pre += 2;
825 }
826
827 /*
828 * Free the reference to the "dynamic" engine. The loaded engine can
829 * now be looked up using ENGINE_by_id().
830 */
831 ENGINE_free(engine);
832
833 engine = ENGINE_by_id(id);
834 if (engine == NULL) {
835 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
836 id, ERR_error_string(ERR_get_error(), NULL));
837 return -1;
838 }
c3d7fb7e 839 found:
6fc6879b
JM		 840 while (post && post[0]) {
841 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
842 if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
843 wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
844 " %s %s [%s]", post[0], post[1],
845 ERR_error_string(ERR_get_error(), NULL));
846 ENGINE_remove(engine);
847 ENGINE_free(engine);
848 return -1;
849 }
850 post += 2;
851 }
852 ENGINE_free(engine);
853
854 return 0;
855}
856
857
858/**
859 * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
860 * @pkcs11_so_path: pksc11_so_path from the configuration
861 * @pcks11_module_path: pkcs11_module_path from the configuration
862 */
863static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
864 const char *pkcs11_module_path)
865{
866 char *engine_id = "pkcs11";
867 const char *pre_cmd[] = {
868 "SO_PATH", NULL /* pkcs11_so_path */,
869 "ID", NULL /* engine_id */,
870 "LIST_ADD", "1",
871 /* "NO_VCHECK", "1", */
872 "LOAD", NULL,
873 NULL, NULL
874 };
875 const char *post_cmd[] = {
876 "MODULE_PATH", NULL /* pkcs11_module_path */,
877 NULL, NULL
878 };
879
5c8ab0d4 880 if (!pkcs11_so_path)
6fc6879b
JM		 881 return 0;
882
883 pre_cmd[1] = pkcs11_so_path;
884 pre_cmd[3] = engine_id;
5c8ab0d4
DW		 885 if (pkcs11_module_path)
886 post_cmd[1] = pkcs11_module_path;
887 else
888 post_cmd[0] = NULL;
6fc6879b
JM		 889
890 wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
891 pkcs11_so_path);
892
893 return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
894}
895
896
897/**
898 * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
899 * @opensc_so_path: opensc_so_path from the configuration
900 */
901static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
902{
903 char *engine_id = "opensc";
904 const char *pre_cmd[] = {
905 "SO_PATH", NULL /* opensc_so_path */,
906 "ID", NULL /* engine_id */,
907 "LIST_ADD", "1",
908 "LOAD", NULL,
909 NULL, NULL
910 };
911
912 if (!opensc_so_path)
913 return 0;
914
915 pre_cmd[1] = opensc_so_path;
916 pre_cmd[3] = engine_id;
917
918 wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
919 opensc_so_path);
920
921 return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
922}
923#endif /* OPENSSL_NO_ENGINE */
924
925
acf36f31
JM		 926static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess)
927{
928 struct wpabuf *buf;
929
930 if (tls_ex_idx_session < 0)
931 return;
932 buf = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
933 if (!buf)
934 return;
935 wpa_printf(MSG_DEBUG,
936 "OpenSSL: Free application session data %p (sess %p)",
937 buf, sess);
938 wpabuf_free(buf);
939
940 SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL);
941}
942
943
6fc6879b
JM		 944void * tls_init(const struct tls_config *conf)
945{
bd9b8b2b 946 struct tls_data *data;
6fc6879b 947 SSL_CTX *ssl;
7c0e1e27 948 struct tls_context *context;
b7328434 949 const char *ciphers;
6fc6879b
JM		 950
951 if (tls_openssl_ref_count == 0) {
7c0e1e27
PS		 952 tls_global = context = tls_context_new(conf);
953 if (context == NULL)
00468b46 954 return NULL;
76f04b38
JM		 955#ifdef CONFIG_FIPS
956#ifdef OPENSSL_FIPS
cf123d7f 957 if (conf && conf->fips_mode) {
4fc53159
JM		 958 static int fips_enabled = 0;
959
960 if (!fips_enabled && !FIPS_mode_set(1)) {
76f04b38
JM		 961 wpa_printf(MSG_ERROR, "Failed to enable FIPS "
962 "mode");
963 ERR_load_crypto_strings();
964 ERR_print_errors_fp(stderr);
b36540db
JM		 965 os_free(tls_global);
966 tls_global = NULL;
76f04b38 967 return NULL;
4fc53159 968 } else {
76f04b38 969 wpa_printf(MSG_INFO, "Running in FIPS mode");
4fc53159
JM		 970 fips_enabled = 1;
971 }
76f04b38
JM		 972 }
973#else /* OPENSSL_FIPS */
cf123d7f 974 if (conf && conf->fips_mode) {
76f04b38
JM		 975 wpa_printf(MSG_ERROR, "FIPS mode requested, but not "
976 "supported");
b36540db
JM		 977 os_free(tls_global);
978 tls_global = NULL;
76f04b38
JM		 979 return NULL;
980 }
981#endif /* OPENSSL_FIPS */
982#endif /* CONFIG_FIPS */
ba3658cf
BS		 983#if OPENSSL_VERSION_NUMBER < 0x10100000L || \
984 (defined(LIBRESSL_VERSION_NUMBER) && \
985 LIBRESSL_VERSION_NUMBER < 0x20700000L)
6fc6879b
JM		 986 SSL_load_error_strings();
987 SSL_library_init();
fee31f76 988#ifndef OPENSSL_NO_SHA256
e1ffdfc1
JM		 989 EVP_add_digest(EVP_sha256());
990#endif /* OPENSSL_NO_SHA256 */
6fc6879b
JM		 991 /* TODO: if /dev/urandom is available, PRNG is seeded
992 * automatically. If this is not the case, random data should
993 * be added here. */
994
995#ifdef PKCS12_FUNCS
1056dad7
JM		 996#ifndef OPENSSL_NO_RC2
997 /*
998 * 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
999 * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
1000 * versions, but it looks like OpenSSL 1.0.0 does not do that
1001 * anymore.
1002 */
1003 EVP_add_cipher(EVP_rc2_40_cbc());
1004#endif /* OPENSSL_NO_RC2 */
6fc6879b
JM		 1005 PKCS12_PBE_add();
1006#endif /* PKCS12_FUNCS */
29bc76e3 1007#endif /* < 1.1.0 */
7c0e1e27 1008 } else {
7c0e1e27
PS		 1009 context = tls_context_new(conf);
1010 if (context == NULL)
1011 return NULL;
6fc6879b
JM		 1012 }
1013 tls_openssl_ref_count++;
1014
bd9b8b2b
JM		 1015 data = os_zalloc(sizeof(*data));
1016 if (data)
1017 ssl = SSL_CTX_new(SSLv23_method());
1018 else
1019 ssl = NULL;
7c0e1e27
PS		 1020 if (ssl == NULL) {
1021 tls_openssl_ref_count--;
a288da61
JM		 1022 if (context != tls_global)
1023 os_free(context);
7c0e1e27
PS		 1024 if (tls_openssl_ref_count == 0) {
1025 os_free(tls_global);
1026 tls_global = NULL;
7c0e1e27 1027 }
1f1e599b 1028 os_free(data);
6fc6879b 1029 return NULL;
7c0e1e27 1030 }
bd9b8b2b 1031 data->ssl = ssl;
159a7fbd 1032 if (conf) {
acf36f31 1033 data->tls_session_lifetime = conf->tls_session_lifetime;
159a7fbd
JB		 1034 data->crl_reload_interval = conf->crl_reload_interval;
1035 }
6fc6879b 1036
35efa247
JM		 1037 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2);
1038 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3);
1039
d7f12e4e
JM		 1040#ifdef SSL_MODE_NO_AUTO_CHAIN
1041 /* Number of deployed use cases assume the default OpenSSL behavior of
1042 * auto chaining the local certificate is in use. BoringSSL removed this
1043 * functionality by default, so we need to restore it here to avoid
1044 * breaking existing use cases. */
1045 SSL_CTX_clear_mode(ssl, SSL_MODE_NO_AUTO_CHAIN);
1046#endif /* SSL_MODE_NO_AUTO_CHAIN */
1047
6fc6879b 1048 SSL_CTX_set_info_callback(ssl, ssl_info_cb);
7c0e1e27 1049 SSL_CTX_set_app_data(ssl, context);
acf36f31
JM		 1050 if (data->tls_session_lifetime > 0) {
1051 SSL_CTX_set_quiet_shutdown(ssl, 1);
1052 /*
1053 * Set default context here. In practice, this will be replaced
1054 * by the per-EAP method context in tls_connection_set_verify().
1055 */
1056 SSL_CTX_set_session_id_context(ssl, (u8 *) "hostapd", 7);
1057 SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_SERVER);
1058 SSL_CTX_set_timeout(ssl, data->tls_session_lifetime);
1059 SSL_CTX_sess_set_remove_cb(ssl, remove_session_cb);
1060 } else {
1061 SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_OFF);
1062 }
1063
1064 if (tls_ex_idx_session < 0) {
1065 tls_ex_idx_session = SSL_SESSION_get_ex_new_index(
1066 0, NULL, NULL, NULL, NULL);
1067 if (tls_ex_idx_session < 0) {
1068 tls_deinit(data);
1069 return NULL;
1070 }
1071 }
6fc6879b
JM		 1072
1073#ifndef OPENSSL_NO_ENGINE
6326fa0c
DW		 1074 wpa_printf(MSG_DEBUG, "ENGINE: Loading builtin engines");
1075 ENGINE_load_builtin_engines();
ddda6276 1076
6fc6879b
JM		 1077 if (conf &&
1078 (conf->opensc_engine_path || conf->pkcs11_engine_path ||
1079 conf->pkcs11_module_path)) {
6fc6879b
JM		 1080 if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
1081 tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
1082 conf->pkcs11_module_path)) {
bd9b8b2b 1083 tls_deinit(data);
6fc6879b
JM		 1084 return NULL;
1085 }
1086 }
1087#endif /* OPENSSL_NO_ENGINE */
1088
b7328434
JM		 1089 if (conf && conf->openssl_ciphers)
1090 ciphers = conf->openssl_ciphers;
1091 else
2b9891bd 1092 ciphers = TLS_DEFAULT_CIPHERS;
b7328434
JM		 1093 if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) {
1094 wpa_printf(MSG_ERROR,
1095 "OpenSSL: Failed to set cipher string '%s'",
1096 ciphers);
bd9b8b2b 1097 tls_deinit(data);
b7328434
JM		 1098 return NULL;
1099 }
1100
bd9b8b2b 1101 return data;
6fc6879b
JM		 1102}
1103
1104
1105void tls_deinit(void *ssl_ctx)
1106{
bd9b8b2b
JM		 1107 struct tls_data *data = ssl_ctx;
1108 SSL_CTX *ssl = data->ssl;
7c0e1e27
PS		 1109 struct tls_context *context = SSL_CTX_get_app_data(ssl);
1110 if (context != tls_global)
1111 os_free(context);
acf36f31
JM		 1112 if (data->tls_session_lifetime > 0)
1113 SSL_CTX_flush_sessions(ssl, 0);
159a7fbd 1114 os_free(data->ca_cert);
6fc6879b
JM		 1115 SSL_CTX_free(ssl);
1116
1117 tls_openssl_ref_count--;
1118 if (tls_openssl_ref_count == 0) {
ba3658cf
BS		 1119#if OPENSSL_VERSION_NUMBER < 0x10100000L || \
1120 (defined(LIBRESSL_VERSION_NUMBER) && \
1121 LIBRESSL_VERSION_NUMBER < 0x20700000L)
6fc6879b
JM		 1122#ifndef OPENSSL_NO_ENGINE
1123 ENGINE_cleanup();
1124#endif /* OPENSSL_NO_ENGINE */
1125 CRYPTO_cleanup_all_ex_data();
a8572960 1126 ERR_remove_thread_state(NULL);
6fc6879b
JM		 1127 ERR_free_strings();
1128 EVP_cleanup();
29bc76e3 1129#endif /* < 1.1.0 */
080585c0
JM		 1130 os_free(tls_global->ocsp_stapling_response);
1131 tls_global->ocsp_stapling_response = NULL;
00468b46
JM		 1132 os_free(tls_global);
1133 tls_global = NULL;
6fc6879b 1134 }
bd9b8b2b 1135
841205a1 1136 os_free(data->check_cert_subject);
bd9b8b2b 1137 os_free(data);
6fc6879b
JM		 1138}
1139
1140
fd4fb281
MG		 1141#ifndef OPENSSL_NO_ENGINE
1142
1143/* Cryptoki return values */
1144#define CKR_PIN_INCORRECT 0x000000a0
1145#define CKR_PIN_INVALID 0x000000a1
1146#define CKR_PIN_LEN_RANGE 0x000000a2
1147
1148/* libp11 */
1149#define ERR_LIB_PKCS11 ERR_LIB_USER
1150
1151static int tls_is_pin_error(unsigned int err)
1152{
1153 return ERR_GET_LIB(err) == ERR_LIB_PKCS11 &&
1154 (ERR_GET_REASON(err) == CKR_PIN_INCORRECT ||
1155 ERR_GET_REASON(err) == CKR_PIN_INVALID ||
1156 ERR_GET_REASON(err) == CKR_PIN_LEN_RANGE);
1157}
1158
1159#endif /* OPENSSL_NO_ENGINE */
1160
1161
aeeb0bca
AL		 1162#ifdef ANDROID
1163/* EVP_PKEY_from_keystore comes from system/security/keystore-engine. */
1164EVP_PKEY * EVP_PKEY_from_keystore(const char *key_id);
1165#endif /* ANDROID */
1166
6fc6879b 1167static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
e59c91af
DS		 1168 const char *pin, const char *key_id,
1169 const char *cert_id, const char *ca_cert_id)
6fc6879b 1170{
aeeb0bca
AL		 1171#if defined(ANDROID) && defined(OPENSSL_IS_BORINGSSL)
1172#if !defined(OPENSSL_NO_ENGINE)
1173#error "This code depends on OPENSSL_NO_ENGINE being defined by BoringSSL."
1174#endif
1175 if (!key_id)
1176 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1177 conn->engine = NULL;
1178 conn->private_key = EVP_PKEY_from_keystore(key_id);
1179 if (!conn->private_key) {
1180 wpa_printf(MSG_ERROR,
1181 "ENGINE: cannot load private key with id '%s' [%s]",
1182 key_id,
1183 ERR_error_string(ERR_get_error(), NULL));
1184 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1185 }
1186#endif /* ANDROID && OPENSSL_IS_BORINGSSL */
1187
6fc6879b
JM		 1188#ifndef OPENSSL_NO_ENGINE
1189 int ret = -1;
1190 if (engine_id == NULL) {
1191 wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
1192 return -1;
1193 }
6fc6879b
JM		 1194
1195 ERR_clear_error();
1176ab6d
KR		 1196#ifdef ANDROID
1197 ENGINE_load_dynamic();
1198#endif
6fc6879b
JM		 1199 conn->engine = ENGINE_by_id(engine_id);
1200 if (!conn->engine) {
1201 wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
1202 engine_id, ERR_error_string(ERR_get_error(), NULL));
1203 goto err;
1204 }
1205 if (ENGINE_init(conn->engine) != 1) {
1206 wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
1207 "(engine: %s) [%s]", engine_id,
1208 ERR_error_string(ERR_get_error(), NULL));
1209 goto err;
1210 }
1211 wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
1212
1176ab6d 1213#ifndef ANDROID
a642a52b 1214 if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
6fc6879b
JM		 1215 wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
1216 ERR_error_string(ERR_get_error(), NULL));
1217 goto err;
1218 }
1176ab6d 1219#endif
3d268b8d 1220 if (key_id) {
a642a52b
DW		 1221 /*
1222 * Ensure that the ENGINE does not attempt to use the OpenSSL
1223 * UI system to obtain a PIN, if we didn't provide one.
1224 */
1225 struct {
1226 const void *password;
1227 const char *prompt_info;
1228 } key_cb = { "", NULL };
1229
3d268b8d
DW		 1230 /* load private key first in-case PIN is required for cert */
1231 conn->private_key = ENGINE_load_private_key(conn->engine,
a642a52b
DW		 1232 key_id, NULL,
1233 &key_cb);
3d268b8d 1234 if (!conn->private_key) {
fd4fb281
MG		 1235 unsigned long err = ERR_get_error();
1236
3d268b8d
DW		 1237 wpa_printf(MSG_ERROR,
1238 "ENGINE: cannot load private key with id '%s' [%s]",
1239 key_id,
fd4fb281
MG		 1240 ERR_error_string(err, NULL));
1241 if (tls_is_pin_error(err))
1242 ret = TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
1243 else
1244 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
3d268b8d
DW		 1245 goto err;
1246 }
6fc6879b 1247 }
e59c91af
DS		 1248
1249 /* handle a certificate and/or CA certificate */
1250 if (cert_id || ca_cert_id) {
1251 const char *cmd_name = "LOAD_CERT_CTRL";
1252
1253 /* test if the engine supports a LOAD_CERT_CTRL */
1254 if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME,
1255 0, (void *)cmd_name, NULL)) {
1256 wpa_printf(MSG_ERROR, "ENGINE: engine does not support"
1257 " loading certificates");
1258 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1259 goto err;
1260 }
1261 }
1262
6fc6879b
JM		 1263 return 0;
1264
1265err:
1266 if (conn->engine) {
1267 ENGINE_free(conn->engine);
1268 conn->engine = NULL;
1269 }
1270
1271 if (conn->private_key) {
1272 EVP_PKEY_free(conn->private_key);
1273 conn->private_key = NULL;
1274 }
1275
1276 return ret;
1277#else /* OPENSSL_NO_ENGINE */
1278 return 0;
1279#endif /* OPENSSL_NO_ENGINE */
1280}
1281
1282
1283static void tls_engine_deinit(struct tls_connection *conn)
1284{
aeeb0bca 1285#if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
6fc6879b
JM		 1286 wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
1287 if (conn->private_key) {
1288 EVP_PKEY_free(conn->private_key);
1289 conn->private_key = NULL;
1290 }
1291 if (conn->engine) {
aeeb0bca 1292#if !defined(OPENSSL_IS_BORINGSSL)
6fc6879b 1293 ENGINE_finish(conn->engine);
aeeb0bca 1294#endif /* !OPENSSL_IS_BORINGSSL */
6fc6879b
JM		 1295 conn->engine = NULL;
1296 }
aeeb0bca 1297#endif /* ANDROID || !OPENSSL_NO_ENGINE */
6fc6879b
JM		 1298}
1299
1300
1301int tls_get_errors(void *ssl_ctx)
1302{
1303 int count = 0;
1304 unsigned long err;
1305
1306 while ((err = ERR_get_error())) {
1307 wpa_printf(MSG_INFO, "TLS - SSL error: %s",
1308 ERR_error_string(err, NULL));
1309 count++;
1310 }
1311
1312 return count;
1313}
1314
bb52293e 1315
cbb15497
JM		 1316static const char * openssl_content_type(int content_type)
1317{
1318 switch (content_type) {
1319 case 20:
1320 return "change cipher spec";
1321 case 21:
1322 return "alert";
1323 case 22:
1324 return "handshake";
1325 case 23:
1326 return "application data";
1327 case 24:
1328 return "heartbeat";
1329 case 256:
1330 return "TLS header info"; /* pseudo content type */
1331 default:
1332 return "?";
1333 }
1334}
1335
1336
1337static const char * openssl_handshake_type(int content_type, const u8 *buf,
1338 size_t len)
1339{
1340 if (content_type != 22 || !buf || len == 0)
1341 return "";
1342 switch (buf[0]) {
1343 case 0:
1344 return "hello request";
1345 case 1:
1346 return "client hello";
1347 case 2:
1348 return "server hello";
e5bffe1a
JM		 1349 case 3:
1350 return "hello verify request";
cbb15497
JM		 1351 case 4:
1352 return "new session ticket";
e5bffe1a
JM		 1353 case 5:
1354 return "end of early data";
1355 case 6:
1356 return "hello retry request";
1357 case 8:
1358 return "encrypted extensions";
cbb15497
JM		 1359 case 11:
1360 return "certificate";
1361 case 12:
1362 return "server key exchange";
1363 case 13:
1364 return "certificate request";
1365 case 14:
1366 return "server hello done";
1367 case 15:
1368 return "certificate verify";
1369 case 16:
1370 return "client key exchange";
1371 case 20:
1372 return "finished";
1373 case 21:
1374 return "certificate url";
1375 case 22:
1376 return "certificate status";
e5bffe1a
JM		 1377 case 23:
1378 return "supplemental data";
1379 case 24:
1380 return "key update";
1381 case 254:
1382 return "message hash";
cbb15497
JM		 1383 default:
1384 return "?";
1385 }
1386}
1387
1388
1c9663cf
JM		 1389#ifdef CONFIG_SUITEB
1390
1391static void check_server_hello(struct tls_connection *conn,
1392 const u8 *pos, const u8 *end)
1393{
1394 size_t payload_len, id_len;
1395
1396 /*
1397 * Parse ServerHello to get the selected cipher suite since OpenSSL does
1398 * not make it cleanly available during handshake and we need to know
1399 * whether DHE was selected.
1400 */
1401
1402 if (end - pos < 3)
1403 return;
1404 payload_len = WPA_GET_BE24(pos);
1405 pos += 3;
1406
1407 if ((size_t) (end - pos) < payload_len)
1408 return;
1409 end = pos + payload_len;
1410
1411 /* Skip Version and Random */
1412 if (end - pos < 2 + SSL3_RANDOM_SIZE)
1413 return;
1414 pos += 2 + SSL3_RANDOM_SIZE;
1415
1416 /* Skip Session ID */
1417 if (end - pos < 1)
1418 return;
1419 id_len = *pos++;
1420 if ((size_t) (end - pos) < id_len)
1421 return;
1422 pos += id_len;
1423
1424 if (end - pos < 2)
1425 return;
1426 conn->cipher_suite = WPA_GET_BE16(pos);
1427 wpa_printf(MSG_DEBUG, "OpenSSL: Server selected cipher suite 0x%x",
1428 conn->cipher_suite);
1429}
1430
1431
1432static void check_server_key_exchange(SSL *ssl, struct tls_connection *conn,
1433 const u8 *pos, const u8 *end)
1434{
1435 size_t payload_len;
1436 u16 dh_len;
1437 BIGNUM *p;
1438 int bits;
1439
1440 if (!(conn->flags & TLS_CONN_SUITEB))
1441 return;
1442
1443 /* DHE is enabled only with DHE-RSA-AES256-GCM-SHA384 */
1444 if (conn->cipher_suite != 0x9f)
1445 return;
1446
1447 if (end - pos < 3)
1448 return;
1449 payload_len = WPA_GET_BE24(pos);
1450 pos += 3;
1451
1452 if ((size_t) (end - pos) < payload_len)
1453 return;
1454 end = pos + payload_len;
1455
1456 if (end - pos < 2)
1457 return;
1458 dh_len = WPA_GET_BE16(pos);
1459 pos += 2;
1460
1461 if ((size_t) (end - pos) < dh_len)
1462 return;
1463 p = BN_bin2bn(pos, dh_len, NULL);
1464 if (!p)
1465 return;
1466
1467 bits = BN_num_bits(p);
1468 BN_free(p);
1469
1470 conn->server_dh_prime_len = bits;
1471 wpa_printf(MSG_DEBUG, "OpenSSL: Server DH prime length: %d bits",
1472 conn->server_dh_prime_len);
1473}
1474
1475#endif /* CONFIG_SUITEB */
1476
1477
bb52293e
JM		 1478static void tls_msg_cb(int write_p, int version, int content_type,
1479 const void *buf, size_t len, SSL *ssl, void *arg)
1480{
1481 struct tls_connection *conn = arg;
1482 const u8 *pos = buf;
1483
faf8f293
JM		 1484 if (write_p == 2) {
1485 wpa_printf(MSG_DEBUG,
1486 "OpenSSL: session ver=0x%x content_type=%d",
1487 version, content_type);
1488 wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Data", buf, len);
1489 return;
1490 }
1491
cbb15497
JM		 1492 wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d (%s/%s)",
1493 write_p ? "TX" : "RX", version, content_type,
1494 openssl_content_type(content_type),
1495 openssl_handshake_type(content_type, buf, len));
bb52293e
JM		 1496 wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len);
1497 if (content_type == 24 && len >= 3 && pos[0] == 1) {
1498 size_t payload_len = WPA_GET_BE16(pos + 1);
1499 if (payload_len + 3 > len) {
1500 wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected");
1501 conn->invalid_hb_used = 1;
1502 }
1503 }
1c9663cf
JM		 1504
1505#ifdef CONFIG_SUITEB
1506 /*
1507 * Need to parse these handshake messages to be able to check DH prime
1508 * length since OpenSSL does not expose the new cipher suite and DH
1509 * parameters during handshake (e.g., for cert_cb() callback).
1510 */
1511 if (content_type == 22 && pos && len > 0 && pos[0] == 2)
1512 check_server_hello(conn, pos + 1, pos + len);
1513 if (content_type == 22 && pos && len > 0 && pos[0] == 12)
1514 check_server_key_exchange(ssl, conn, pos + 1, pos + len);
1515#endif /* CONFIG_SUITEB */
bb52293e
JM		 1516}
1517
1518
6a31a31d 1519struct tls_connection * tls_connection_init(void *ssl_ctx)
6fc6879b 1520{
bd9b8b2b
JM		 1521 struct tls_data *data = ssl_ctx;
1522 SSL_CTX *ssl = data->ssl;
6a31a31d 1523 struct tls_connection *conn;
fca25ef4 1524 long options;
159a7fbd
JB		 1525 X509_STORE *new_cert_store;
1526 struct os_reltime now;
6a31a31d 1527 struct tls_context *context = SSL_CTX_get_app_data(ssl);
6fc6879b 1528
159a7fbd
JB		 1529 /* Replace X509 store if it is time to update CRL. */
1530 if (data->crl_reload_interval > 0 && os_get_reltime(&now) == 0 &&
1531 os_reltime_expired(&now, &data->crl_last_reload,
1532 data->crl_reload_interval)) {
1533 wpa_printf(MSG_INFO,
1534 "OpenSSL: Flushing X509 store with ca_cert file");
1535 new_cert_store = tls_crl_cert_reload(data->ca_cert,
1536 data->check_crl);
1537 if (!new_cert_store) {
1538 wpa_printf(MSG_ERROR,
1539 "OpenSSL: Error replacing X509 store with ca_cert file");
1540 } else {
1541 /* Replace old store */
1542 SSL_CTX_set_cert_store(ssl, new_cert_store);
1543 data->crl_last_reload = now;
1544 }
1545 }
1546
6a31a31d
JM		 1547 conn = os_zalloc(sizeof(*conn));
1548 if (conn == NULL)
1549 return NULL;
dd5d325b 1550 conn->data = data;
bd9b8b2b 1551 conn->ssl_ctx = ssl;
6a31a31d
JM		 1552 conn->ssl = SSL_new(ssl);
1553 if (conn->ssl == NULL) {
6fc6879b
JM		 1554 tls_show_errors(MSG_INFO, __func__,
1555 "Failed to initialize new SSL connection");
6a31a31d
JM		 1556 os_free(conn);
1557 return NULL;
6fc6879b
JM		 1558 }
1559
6a31a31d
JM		 1560 conn->context = context;
1561 SSL_set_app_data(conn->ssl, conn);
1562 SSL_set_msg_callback(conn->ssl, tls_msg_cb);
1563 SSL_set_msg_callback_arg(conn->ssl, conn);
fca25ef4
JM		 1564 options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
1565 SSL_OP_SINGLE_DH_USE;
1566#ifdef SSL_OP_NO_COMPRESSION
1567 options |= SSL_OP_NO_COMPRESSION;
1568#endif /* SSL_OP_NO_COMPRESSION */
6a31a31d 1569 SSL_set_options(conn->ssl, options);
6fc6879b 1570
6a31a31d
JM		 1571 conn->ssl_in = BIO_new(BIO_s_mem());
1572 if (!conn->ssl_in) {
6fc6879b
JM		 1573 tls_show_errors(MSG_INFO, __func__,
1574 "Failed to create a new BIO for ssl_in");
6a31a31d
JM		 1575 SSL_free(conn->ssl);
1576 os_free(conn);
1577 return NULL;
6fc6879b
JM		 1578 }
1579
6a31a31d
JM		 1580 conn->ssl_out = BIO_new(BIO_s_mem());
1581 if (!conn->ssl_out) {
6fc6879b
JM		 1582 tls_show_errors(MSG_INFO, __func__,
1583 "Failed to create a new BIO for ssl_out");
1584 SSL_free(conn->ssl);
6a31a31d 1585 BIO_free(conn->ssl_in);
6fc6879b
JM		 1586 os_free(conn);
1587 return NULL;
1588 }
1589
6a31a31d
JM		 1590 SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
1591
6fc6879b
JM		 1592 return conn;
1593}
1594
1595
1596void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
1597{
1598 if (conn == NULL)
1599 return;
acf36f31
JM		 1600 if (conn->success_data) {
1601 /*
1602 * Make sure ssl_clear_bad_session() does not remove this
1603 * session.
1604 */
1605 SSL_set_quiet_shutdown(conn->ssl, 1);
1606 SSL_shutdown(conn->ssl);
1607 }
6fc6879b
JM		 1608 SSL_free(conn->ssl);
1609 tls_engine_deinit(conn);
1610 os_free(conn->subject_match);
1611 os_free(conn->altsubject_match);
01f809c7 1612 os_free(conn->suffix_match);
cebee30f 1613 os_free(conn->domain_match);
841205a1 1614 os_free(conn->check_cert_subject);
6fc6879b
JM		 1615 os_free(conn->session_ticket);
1616 os_free(conn);
1617}
1618
1619
1620int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
1621{
1622 return conn ? SSL_is_init_finished(conn->ssl) : 0;
1623}
1624
1625
0ec3e77a
JM		 1626char * tls_connection_peer_serial_num(void *tls_ctx,
1627 struct tls_connection *conn)
1628{
1629 ASN1_INTEGER *ser;
1630 char *serial_num;
1631 size_t len;
1632
1633 if (!conn->peer_cert)
1634 return NULL;
1635
1636 ser = X509_get_serialNumber(conn->peer_cert);
1637 if (!ser)
1638 return NULL;
1639
1640 len = ASN1_STRING_length(ser) * 2 + 1;
1641 serial_num = os_malloc(len);
1642 if (!serial_num)
1643 return NULL;
1644 wpa_snprintf_hex_uppercase(serial_num, len,
1645 ASN1_STRING_get0_data(ser),
1646 ASN1_STRING_length(ser));
1647 return serial_num;
1648}
1649
1650
6fc6879b
JM		 1651int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
1652{
1653 if (conn == NULL)
1654 return -1;
1655
1656 /* Shutdown previous TLS connection without notifying the peer
1657 * because the connection was already terminated in practice
1658 * and "close notify" shutdown alert would confuse AS. */
1659 SSL_set_quiet_shutdown(conn->ssl, 1);
1660 SSL_shutdown(conn->ssl);
a7803b0c 1661 return SSL_clear(conn->ssl) == 1 ? 0 : -1;
6fc6879b
JM		 1662}
1663
1664
1665static int tls_match_altsubject_component(X509 *cert, int type,
1666 const char *value, size_t len)
1667{
1668 GENERAL_NAME *gen;
1669 void *ext;
a8572960
AL		 1670 int found = 0;
1671 stack_index_t i;
6fc6879b
JM		 1672
1673 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1674
1675 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1676 gen = sk_GENERAL_NAME_value(ext, i);
1677 if (gen->type != type)
1678 continue;
1679 if (os_strlen((char *) gen->d.ia5->data) == len &&
1680 os_memcmp(value, gen->d.ia5->data, len) == 0)
1681 found++;
1682 }
1683
0f096370
JM		 1684 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
1685
6fc6879b
JM		 1686 return found;
1687}
1688
1689
1690static int tls_match_altsubject(X509 *cert, const char *match)
1691{
1692 int type;
1693 const char *pos, *end;
1694 size_t len;
1695
1696 pos = match;
1697 do {
1698 if (os_strncmp(pos, "EMAIL:", 6) == 0) {
1699 type = GEN_EMAIL;
1700 pos += 6;
1701 } else if (os_strncmp(pos, "DNS:", 4) == 0) {
1702 type = GEN_DNS;
1703 pos += 4;
1704 } else if (os_strncmp(pos, "URI:", 4) == 0) {
1705 type = GEN_URI;
1706 pos += 4;
1707 } else {
1708 wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
1709 "match '%s'", pos);
1710 return 0;
1711 }
1712 end = os_strchr(pos, ';');
1713 while (end) {
1714 if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
1715 os_strncmp(end + 1, "DNS:", 4) == 0 ||
1716 os_strncmp(end + 1, "URI:", 4) == 0)
1717 break;
1718 end = os_strchr(end + 1, ';');
1719 }
1720 if (end)
1721 len = end - pos;
1722 else
1723 len = os_strlen(pos);
1724 if (tls_match_altsubject_component(cert, type, pos, len) > 0)
1725 return 1;
1726 pos = end + 1;
1727 } while (end);
1728
1729 return 0;
1730}
1731
1732
461e3ebe 1733#ifndef CONFIG_NATIVE_WINDOWS
cebee30f 1734static int domain_suffix_match(const u8 *val, size_t len, const char *match,
242e8572 1735 size_t match_len, int full)
01f809c7 1736{
242e8572 1737 size_t i;
01f809c7
JM		 1738
1739 /* Check for embedded nuls that could mess up suffix matching */
1740 for (i = 0; i < len; i++) {
1741 if (val[i] == '\0') {
1742 wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject");
1743 return 0;
1744 }
1745 }
1746
cebee30f 1747 if (match_len > len || (full && match_len != len))
01f809c7
JM		 1748 return 0;
1749
1750 if (os_strncasecmp((const char *) val + len - match_len, match,
1751 match_len) != 0)
1752 return 0; /* no match */
1753
1754 if (match_len == len)
1755 return 1; /* exact match */
1756
1757 if (val[len - match_len - 1] == '.')
1758 return 1; /* full label match completes suffix match */
1759
1760 wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match");
1761 return 0;
1762}
461e3ebe 1763#endif /* CONFIG_NATIVE_WINDOWS */
01f809c7
JM		 1764
1765
841205a1
JB		 1766struct tls_dn_field_order_cnt {
1767 u8 cn;
1768 u8 c;
1769 u8 l;
1770 u8 st;
1771 u8 o;
1772 u8 ou;
1773 u8 email;
1774};
1775
1776
1777static int get_dn_field_index(const struct tls_dn_field_order_cnt *dn_cnt,
1778 int nid)
1779{
1780 switch (nid) {
1781 case NID_commonName:
1782 return dn_cnt->cn;
1783 case NID_countryName:
1784 return dn_cnt->c;
1785 case NID_localityName:
1786 return dn_cnt->l;
1787 case NID_stateOrProvinceName:
1788 return dn_cnt->st;
1789 case NID_organizationName:
1790 return dn_cnt->o;
1791 case NID_organizationalUnitName:
1792 return dn_cnt->ou;
1793 case NID_pkcs9_emailAddress:
1794 return dn_cnt->email;
1795 default:
1796 wpa_printf(MSG_ERROR,
1797 "TLS: Unknown NID '%d' in check_cert_subject",
1798 nid);
1799 return -1;
1800 }
1801}
1802
1803
1804/**
1805 * match_dn_field - Match configuration DN field against Certificate DN field
1806 * @cert: Certificate
1807 * @nid: NID of DN field
1808 * @field: Field name
1809 * @value DN field value which is passed from configuration
1810 * e.g., if configuration have C=US and this argument will point to US.
1811 * @dn_cnt: DN matching context
1812 * Returns: 1 on success and 0 on failure
1813 */
1814static int match_dn_field(const X509 *cert, int nid, const char *field,
1815 const char *value,
1816 const struct tls_dn_field_order_cnt *dn_cnt)
1817{
1818 int i, ret = 0, len, config_dn_field_index, match_index = 0;
1819 X509_NAME *name;
1820
1821 len = os_strlen(value);
c675397c 1822 name = X509_get_subject_name((X509 *) cert);
841205a1
JB		 1823
1824 /* Assign incremented cnt for every field of DN to check DN field in
1825 * right order */
1826 config_dn_field_index = get_dn_field_index(dn_cnt, nid);
1827 if (config_dn_field_index < 0)
1828 return 0;
1829
1830 /* Fetch value based on NID */
1831 for (i = -1; (i = X509_NAME_get_index_by_NID(name, nid, i)) > -1;) {
1832 X509_NAME_ENTRY *e;
1833 ASN1_STRING *cn;
1834
1835 e = X509_NAME_get_entry(name, i);
1836 if (!e)
1837 continue;
1838
1839 cn = X509_NAME_ENTRY_get_data(e);
1840 if (!cn)
1841 continue;
1842
1843 match_index++;
1844
1845 /* check for more than one DN field with same name */
1846 if (match_index != config_dn_field_index)
1847 continue;
1848
1849 /* Check wildcard at the right end side */
1850 /* E.g., if OU=develop* mentioned in configuration, allow 'OU'
1851 * of the subject in the client certificate to start with
1852 * 'develop' */
1853 if (len > 0 && value[len - 1] == '*') {
1854 /* Compare actual certificate DN field value with
1855 * configuration DN field value up to the specified
1856 * length. */
1857 ret = ASN1_STRING_length(cn) >= len - 1 &&
1858 os_memcmp(ASN1_STRING_get0_data(cn), value,
1859 len - 1) == 0;
1860 } else {
1861 /* Compare actual certificate DN field value with
1862 * configuration DN field value */
1863 ret = ASN1_STRING_length(cn) == len &&
1864 os_memcmp(ASN1_STRING_get0_data(cn), value,
1865 len) == 0;
1866 }
1867 if (!ret) {
1868 wpa_printf(MSG_ERROR,
1869 "OpenSSL: Failed to match %s '%s' with certificate DN field value '%s'",
1870 field, value, ASN1_STRING_get0_data(cn));
1871 }
1872 break;
1873 }
1874
1875 return ret;
1876}
1877
1878
1879/**
1880 * get_value_from_field - Get value from DN field
1881 * @cert: Certificate
1882 * @field_str: DN field string which is passed from configuration file (e.g.,
1883 * C=US)
1884 * @dn_cnt: DN matching context
1885 * Returns: 1 on success and 0 on failure
1886 */
1887static int get_value_from_field(const X509 *cert, char *field_str,
1888 struct tls_dn_field_order_cnt *dn_cnt)
1889{
1890 int nid;
1891 char *context = NULL, *name, *value;
1892
1893 if (os_strcmp(field_str, "*") == 0)
1894 return 1; /* wildcard matches everything */
1895
1896 name = str_token(field_str, "=", &context);
1897 if (!name)
1898 return 0;
1899
1900 /* Compare all configured DN fields and assign nid based on that to
1901 * fetch correct value from certificate subject */
1902 if (os_strcmp(name, "CN") == 0) {
1903 nid = NID_commonName;
1904 dn_cnt->cn++;
1905 } else if(os_strcmp(name, "C") == 0) {
1906 nid = NID_countryName;
1907 dn_cnt->c++;
1908 } else if (os_strcmp(name, "L") == 0) {
1909 nid = NID_localityName;
1910 dn_cnt->l++;
1911 } else if (os_strcmp(name, "ST") == 0) {
1912 nid = NID_stateOrProvinceName;
1913 dn_cnt->st++;
1914 } else if (os_strcmp(name, "O") == 0) {
1915 nid = NID_organizationName;
1916 dn_cnt->o++;
1917 } else if (os_strcmp(name, "OU") == 0) {
1918 nid = NID_organizationalUnitName;
1919 dn_cnt->ou++;
1920 } else if (os_strcmp(name, "emailAddress") == 0) {
1921 nid = NID_pkcs9_emailAddress;
1922 dn_cnt->email++;
1923 } else {
1924 wpa_printf(MSG_ERROR,
1925 "TLS: Unknown field '%s' in check_cert_subject", name);
1926 return 0;
1927 }
1928
1929 value = str_token(field_str, "=", &context);
1930 if (!value) {
1931 wpa_printf(MSG_ERROR,
1932 "TLS: Distinguished Name field '%s' value is not defined in check_cert_subject",
1933 name);
1934 return 0;
1935 }
1936
1937 return match_dn_field(cert, nid, name, value, dn_cnt);
1938}
1939
1940
1941/**
1942 * tls_match_dn_field - Match subject DN field with check_cert_subject
1943 * @cert: Certificate
1944 * @match: check_cert_subject string
1945 * Returns: Return 1 on success and 0 on failure
1946*/
1947static int tls_match_dn_field(X509 *cert, const char *match)
1948{
1949 const char *token, *last = NULL;
1950 char field[256];
1951 struct tls_dn_field_order_cnt dn_cnt;
1952
1953 os_memset(&dn_cnt, 0, sizeof(dn_cnt));
1954
1955 /* Maximum length of each DN field is 255 characters */
1956
1957 /* Process each '/' delimited field */
1958 while ((token = cstr_token(match, "/", &last))) {
1959 if (last - token >= (int) sizeof(field)) {
1960 wpa_printf(MSG_ERROR,
1961 "OpenSSL: Too long DN matching field value in '%s'",
1962 match);
1963 return 0;
1964 }
1965 os_memcpy(field, token, last - token);
1966 field[last - token] = '\0';
1967
1968 if (!get_value_from_field(cert, field, &dn_cnt)) {
1969 wpa_printf(MSG_DEBUG, "OpenSSL: No match for DN '%s'",
1970 field);
1971 return 0;
1972 }
1973 }
1974
1975 return 1;
1976}
1977
1978
242e8572
JM		 1979#ifndef CONFIG_NATIVE_WINDOWS
1980static int tls_match_suffix_helper(X509 *cert, const char *match,
1981 size_t match_len, int full)
01f809c7
JM		 1982{
1983 GENERAL_NAME *gen;
1984 void *ext;
1985 int i;
98a1571d 1986 stack_index_t j;
01f809c7
JM		 1987 int dns_name = 0;
1988 X509_NAME *name;
1989
cebee30f
JM		 1990 wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s",
1991 full ? "": "suffix ", match);
01f809c7
JM		 1992
1993 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1994
98a1571d
JM		 1995 for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) {
1996 gen = sk_GENERAL_NAME_value(ext, j);
01f809c7
JM		 1997 if (gen->type != GEN_DNS)
1998 continue;
1999 dns_name++;
2000 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName",
2001 gen->d.dNSName->data,
2002 gen->d.dNSName->length);
2003 if (domain_suffix_match(gen->d.dNSName->data,
242e8572
JM		 2004 gen->d.dNSName->length,
2005 match, match_len, full) == 1) {
cebee30f
JM		 2006 wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found",
2007 full ? "Match" : "Suffix match");
0f096370 2008 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
01f809c7
JM		 2009 return 1;
2010 }
2011 }
0f096370 2012 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
01f809c7
JM		 2013
2014 if (dns_name) {
2015 wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched");
2016 return 0;
2017 }
2018
2019 name = X509_get_subject_name(cert);
2020 i = -1;
2021 for (;;) {
2022 X509_NAME_ENTRY *e;
2023 ASN1_STRING *cn;
2024
2025 i = X509_NAME_get_index_by_NID(name, NID_commonName, i);
2026 if (i == -1)
2027 break;
2028 e = X509_NAME_get_entry(name, i);
2029 if (e == NULL)
2030 continue;
2031 cn = X509_NAME_ENTRY_get_data(e);
2032 if (cn == NULL)
2033 continue;
2034 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName",
2035 cn->data, cn->length);
242e8572
JM		 2036 if (domain_suffix_match(cn->data, cn->length,
2037 match, match_len, full) == 1) {
cebee30f
JM		 2038 wpa_printf(MSG_DEBUG, "TLS: %s in commonName found",
2039 full ? "Match" : "Suffix match");
01f809c7
JM		 2040 return 1;
2041 }
2042 }
2043
cebee30f
JM		 2044 wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found",
2045 full ? "": "suffix ");
01f809c7 2046 return 0;
242e8572
JM		 2047}
2048#endif /* CONFIG_NATIVE_WINDOWS */
2049
2050
2051static int tls_match_suffix(X509 *cert, const char *match, int full)
2052{
2053#ifdef CONFIG_NATIVE_WINDOWS
2054 /* wincrypt.h has conflicting X509_NAME definition */
2055 return -1;
2056#else /* CONFIG_NATIVE_WINDOWS */
2057 const char *token, *last = NULL;
2058
2059 /* Process each match alternative separately until a match is found */
2060 while ((token = cstr_token(match, ";", &last))) {
2061 if (tls_match_suffix_helper(cert, token, last - token, full))
2062 return 1;
2063 }
2064
2065 return 0;
461e3ebe 2066#endif /* CONFIG_NATIVE_WINDOWS */
01f809c7
JM		 2067}
2068
2069
00468b46
JM		 2070static enum tls_fail_reason openssl_tls_fail_reason(int err)
2071{
2072 switch (err) {
2073 case X509_V_ERR_CERT_REVOKED:
2074 return TLS_FAIL_REVOKED;
2075 case X509_V_ERR_CERT_NOT_YET_VALID:
2076 case X509_V_ERR_CRL_NOT_YET_VALID:
2077 return TLS_FAIL_NOT_YET_VALID;
2078 case X509_V_ERR_CERT_HAS_EXPIRED:
2079 case X509_V_ERR_CRL_HAS_EXPIRED:
2080 return TLS_FAIL_EXPIRED;
2081 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
2082 case X509_V_ERR_UNABLE_TO_GET_CRL:
2083 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
2084 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
2085 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
2086 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
2087 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
2088 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
2089 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
2090 case X509_V_ERR_INVALID_CA:
2091 return TLS_FAIL_UNTRUSTED;
2092 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
2093 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
2094 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
2095 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
2096 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
2097 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
2098 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
2099 case X509_V_ERR_CERT_UNTRUSTED:
2100 case X509_V_ERR_CERT_REJECTED:
2101 return TLS_FAIL_BAD_CERTIFICATE;
2102 default:
2103 return TLS_FAIL_UNSPECIFIED;
2104 }
2105}
2106
2107
2108static struct wpabuf * get_x509_cert(X509 *cert)
2109{
2110 struct wpabuf *buf;
2111 u8 *tmp;
2112
2113 int cert_len = i2d_X509(cert, NULL);
2114 if (cert_len <= 0)
2115 return NULL;
2116
2117 buf = wpabuf_alloc(cert_len);
2118 if (buf == NULL)
2119 return NULL;
2120
2121 tmp = wpabuf_put(buf, cert_len);
2122 i2d_X509(cert, &tmp);
2123 return buf;
2124}
2125
2126
2127static void openssl_tls_fail_event(struct tls_connection *conn,
2128 X509 *err_cert, int err, int depth,
2129 const char *subject, const char *err_str,
2130 enum tls_fail_reason reason)
2131{
2132 union tls_event_data ev;
2133 struct wpabuf *cert = NULL;
7c0e1e27 2134 struct tls_context *context = conn->context;
00468b46 2135
7c0e1e27 2136 if (context->event_cb == NULL)
00468b46
JM		 2137 return;
2138
2139 cert = get_x509_cert(err_cert);
2140 os_memset(&ev, 0, sizeof(ev));
2141 ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
2142 reason : openssl_tls_fail_reason(err);
2143 ev.cert_fail.depth = depth;
2144 ev.cert_fail.subject = subject;
2145 ev.cert_fail.reason_txt = err_str;
2146 ev.cert_fail.cert = cert;
7c0e1e27 2147 context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
00468b46
JM		 2148 wpabuf_free(cert);
2149}
2150
2151
21f1a1e6
JM		 2152static int openssl_cert_tod(X509 *cert)
2153{
2154 CERTIFICATEPOLICIES *ext;
2155 stack_index_t i;
2156 char buf[100];
2157 int res;
2158 int tod = 0;
2159
2160 ext = X509_get_ext_d2i(cert, NID_certificate_policies, NULL, NULL);
2161 if (!ext)
2162 return 0;
2163
2164 for (i = 0; i < sk_POLICYINFO_num(ext); i++) {
2165 POLICYINFO *policy;
2166
2167 policy = sk_POLICYINFO_value(ext, i);
2168 res = OBJ_obj2txt(buf, sizeof(buf), policy->policyid, 0);
2169 if (res < 0 || (size_t) res >= sizeof(buf))
2170 continue;
2171 wpa_printf(MSG_DEBUG, "OpenSSL: Certificate Policy %s", buf);
2172 if (os_strcmp(buf, "1.3.6.1.4.1.40808.1.3.1") == 0)
2173 tod = 1;
2174 }
2175
2176 return tod;
2177}
2178
2179
00468b46
JM		 2180static void openssl_tls_cert_event(struct tls_connection *conn,
2181 X509 *err_cert, int depth,
2182 const char *subject)
2183{
2184 struct wpabuf *cert = NULL;
2185 union tls_event_data ev;
7c0e1e27 2186 struct tls_context *context = conn->context;
d07d3fbd
JM		 2187 char *altsubject[TLS_MAX_ALT_SUBJECT];
2188 int alt, num_altsubject = 0;
2189 GENERAL_NAME *gen;
2190 void *ext;
2191 stack_index_t i;
2ff952a5
JM		 2192 ASN1_INTEGER *ser;
2193 char serial_num[128];
00468b46
JM		 2194#ifdef CONFIG_SHA256
2195 u8 hash[32];
2196#endif /* CONFIG_SHA256 */
2197
7c0e1e27 2198 if (context->event_cb == NULL)
00468b46
JM		 2199 return;
2200
2201 os_memset(&ev, 0, sizeof(ev));
3c108b75
JM		 2202 if (conn->cert_probe || (conn->flags & TLS_CONN_EXT_CERT_CHECK) ||
2203 context->cert_in_cb) {
00468b46
JM		 2204 cert = get_x509_cert(err_cert);
2205 ev.peer_cert.cert = cert;
2206 }
2207#ifdef CONFIG_SHA256
2208 if (cert) {
2209 const u8 *addr[1];
2210 size_t len[1];
2211 addr[0] = wpabuf_head(cert);
2212 len[0] = wpabuf_len(cert);
2213 if (sha256_vector(1, addr, len, hash) == 0) {
2214 ev.peer_cert.hash = hash;
2215 ev.peer_cert.hash_len = sizeof(hash);
2216 }
2217 }
2218#endif /* CONFIG_SHA256 */
2219 ev.peer_cert.depth = depth;
2220 ev.peer_cert.subject = subject;
d07d3fbd 2221
2ff952a5
JM		 2222 ser = X509_get_serialNumber(err_cert);
2223 if (ser) {
2224 wpa_snprintf_hex_uppercase(serial_num, sizeof(serial_num),
2225 ASN1_STRING_get0_data(ser),
2226 ASN1_STRING_length(ser));
2227 ev.peer_cert.serial_num = serial_num;
2228 }
2229
d07d3fbd
JM		 2230 ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL);
2231 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
2232 char *pos;
2233
2234 if (num_altsubject == TLS_MAX_ALT_SUBJECT)
2235 break;
2236 gen = sk_GENERAL_NAME_value(ext, i);
2237 if (gen->type != GEN_EMAIL &&
2238 gen->type != GEN_DNS &&
2239 gen->type != GEN_URI)
2240 continue;
2241
2242 pos = os_malloc(10 + gen->d.ia5->length + 1);
2243 if (pos == NULL)
2244 break;
2245 altsubject[num_altsubject++] = pos;
2246
2247 switch (gen->type) {
2248 case GEN_EMAIL:
2249 os_memcpy(pos, "EMAIL:", 6);
2250 pos += 6;
2251 break;
2252 case GEN_DNS:
2253 os_memcpy(pos, "DNS:", 4);
2254 pos += 4;
2255 break;
2256 case GEN_URI:
2257 os_memcpy(pos, "URI:", 4);
2258 pos += 4;
2259 break;
2260 }
2261
2262 os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length);
2263 pos += gen->d.ia5->length;
2264 *pos = '\0';
2265 }
0f096370 2266 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
d07d3fbd
JM		 2267
2268 for (alt = 0; alt < num_altsubject; alt++)
2269 ev.peer_cert.altsubject[alt] = altsubject[alt];
2270 ev.peer_cert.num_altsubject = num_altsubject;
2271
21f1a1e6
JM		 2272 ev.peer_cert.tod = openssl_cert_tod(err_cert);
2273
7c0e1e27 2274 context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
00468b46 2275 wpabuf_free(cert);
d07d3fbd
JM		 2276 for (alt = 0; alt < num_altsubject; alt++)
2277 os_free(altsubject[alt]);
00468b46
JM		 2278}
2279
2280
6fc6879b
JM		 2281static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
2282{
2283 char buf[256];
2284 X509 *err_cert;
2285 int err, depth;
2286 SSL *ssl;
2287 struct tls_connection *conn;
7c0e1e27 2288 struct tls_context *context;
cebee30f 2289 char *match, *altmatch, *suffix_match, *domain_match;
841205a1 2290 const char *check_cert_subject;
00468b46 2291 const char *err_str;
6fc6879b
JM		 2292
2293 err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
97efe70b
EL		 2294 if (!err_cert)
2295 return 0;
2296
6fc6879b
JM		 2297 err = X509_STORE_CTX_get_error(x509_ctx);
2298 depth = X509_STORE_CTX_get_error_depth(x509_ctx);
2299 ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
2300 SSL_get_ex_data_X509_STORE_CTX_idx());
2301 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
2302
2303 conn = SSL_get_app_data(ssl);
0bdaa741
JM		 2304 if (conn == NULL)
2305 return 0;
080585c0
JM		 2306
2307 if (depth == 0)
2308 conn->peer_cert = err_cert;
2309 else if (depth == 1)
2310 conn->peer_issuer = err_cert;
6bf61fb2
JM		 2311 else if (depth == 2)
2312 conn->peer_issuer_issuer = err_cert;
080585c0 2313
7c0e1e27 2314 context = conn->context;
0bdaa741
JM		 2315 match = conn->subject_match;
2316 altmatch = conn->altsubject_match;
01f809c7 2317 suffix_match = conn->suffix_match;
cebee30f 2318 domain_match = conn->domain_match;
6fc6879b 2319
00468b46
JM		 2320 if (!preverify_ok && !conn->ca_cert_verify)
2321 preverify_ok = 1;
2322 if (!preverify_ok && depth > 0 && conn->server_cert_only)
2323 preverify_ok = 1;
235279e7
JM		 2324 if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) &&
2325 (err == X509_V_ERR_CERT_HAS_EXPIRED ||
2326 err == X509_V_ERR_CERT_NOT_YET_VALID)) {
2327 wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity "
2328 "time mismatch");
2329 preverify_ok = 1;
2330 }
dd5d325b
SV		 2331 if (!preverify_ok && !conn->data->check_crl_strict &&
2332 (err == X509_V_ERR_CRL_HAS_EXPIRED ||
2333 err == X509_V_ERR_CRL_NOT_YET_VALID)) {
2334 wpa_printf(MSG_DEBUG,
2335 "OpenSSL: Ignore certificate validity CRL time mismatch");
2336 preverify_ok = 1;
2337 }
00468b46
JM		 2338
2339 err_str = X509_verify_cert_error_string(err);
2340
2341#ifdef CONFIG_SHA256
00033a09
RA		 2342 /*
2343 * Do not require preverify_ok so we can explicity allow otherwise
2344 * invalid pinned server certificates.
2345 */
2346 if (depth == 0 && conn->server_cert_only) {
00468b46
JM		 2347 struct wpabuf *cert;
2348 cert = get_x509_cert(err_cert);
2349 if (!cert) {
2350 wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch "
2351 "server certificate data");
6fc6879b 2352 preverify_ok = 0;
00468b46
JM		 2353 } else {
2354 u8 hash[32];
2355 const u8 *addr[1];
2356 size_t len[1];
2357 addr[0] = wpabuf_head(cert);
2358 len[0] = wpabuf_len(cert);
2359 if (sha256_vector(1, addr, len, hash) < 0 ||
2360 os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
2361 err_str = "Server certificate mismatch";
2362 err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
2363 preverify_ok = 0;
00033a09
RA		 2364 } else if (!preverify_ok) {
2365 /*
2366 * Certificate matches pinned certificate, allow
2367 * regardless of other problems.
2368 */
2369 wpa_printf(MSG_DEBUG,
2370 "OpenSSL: Ignore validation issues for a pinned server certificate");
2371 preverify_ok = 1;
00468b46
JM		 2372 }
2373 wpabuf_free(cert);
6fc6879b
JM		 2374 }
2375 }
00468b46
JM		 2376#endif /* CONFIG_SHA256 */
2377
3539738c
JM		 2378 openssl_tls_cert_event(conn, err_cert, depth, buf);
2379
00468b46 2380 if (!preverify_ok) {
84db90e4
JM		 2381 if (depth > 0) {
2382 /* Send cert event for the peer certificate so that
2383 * the upper layers get information about it even if
2384 * validation of a CA certificate fails. */
2385 STACK_OF(X509) *chain;
2386
2387 chain = X509_STORE_CTX_get1_chain(x509_ctx);
2388 if (chain && sk_X509_num(chain) > 0) {
2389 char buf2[256];
2390 X509 *cert;
2391
2392 cert = sk_X509_value(chain, 0);
2393 X509_NAME_oneline(X509_get_subject_name(cert),
2394 buf2, sizeof(buf2));
2395
2396 openssl_tls_cert_event(conn, cert, 0, buf2);
2397 }
2398 if (chain)
2399 sk_X509_pop_free(chain, X509_free);
2400 }
2401
00468b46
JM		 2402 wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
2403 " error %d (%s) depth %d for '%s'", err, err_str,
2404 depth, buf);
2405 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2406 err_str, TLS_FAIL_UNSPECIFIED);
2407 return preverify_ok;
2408 }
2409
2410 wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d "
2411 "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
2412 preverify_ok, err, err_str,
2413 conn->ca_cert_verify, depth, buf);
841205a1
JB		 2414 check_cert_subject = conn->check_cert_subject;
2415 if (!check_cert_subject)
2416 check_cert_subject = conn->data->check_cert_subject;
2417 if (check_cert_subject) {
2418 if (depth == 0 &&
2419 !tls_match_dn_field(err_cert, check_cert_subject)) {
2420 preverify_ok = 0;
2421 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2422 "Distinguished Name",
2423 TLS_FAIL_DN_MISMATCH);
2424 }
2425 }
00468b46
JM		 2426 if (depth == 0 && match && os_strstr(buf, match) == NULL) {
2427 wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
2428 "match with '%s'", buf, match);
2429 preverify_ok = 0;
2430 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2431 "Subject mismatch",
2432 TLS_FAIL_SUBJECT_MISMATCH);
2433 } else if (depth == 0 && altmatch &&
2434 !tls_match_altsubject(err_cert, altmatch)) {
2435 wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
2436 "'%s' not found", altmatch);
2437 preverify_ok = 0;
2438 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2439 "AltSubject mismatch",
2440 TLS_FAIL_ALTSUBJECT_MISMATCH);
01f809c7 2441 } else if (depth == 0 && suffix_match &&
cebee30f 2442 !tls_match_suffix(err_cert, suffix_match, 0)) {
01f809c7
JM		 2443 wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found",
2444 suffix_match);
2445 preverify_ok = 0;
2446 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2447 "Domain suffix mismatch",
2448 TLS_FAIL_DOMAIN_SUFFIX_MISMATCH);
cebee30f
JM		 2449 } else if (depth == 0 && domain_match &&
2450 !tls_match_suffix(err_cert, domain_match, 1)) {
2451 wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found",
2452 domain_match);
2453 preverify_ok = 0;
2454 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2455 "Domain mismatch",
2456 TLS_FAIL_DOMAIN_MISMATCH);
3539738c 2457 }
00468b46
JM		 2458
2459 if (conn->cert_probe && preverify_ok && depth == 0) {
2460 wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate "
2461 "on probe-only run");
2462 preverify_ok = 0;
2463 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2464 "Server certificate chain probe",
2465 TLS_FAIL_SERVER_CHAIN_PROBE);
2466 }
6fc6879b 2467
4eb8cfe0
JM		 2468#ifdef CONFIG_SUITEB
2469 if (conn->flags & TLS_CONN_SUITEB) {
2470 EVP_PKEY *pk;
2471 RSA *rsa;
2472 int len = -1;
2473
2474 pk = X509_get_pubkey(err_cert);
2475 if (pk) {
2476 rsa = EVP_PKEY_get1_RSA(pk);
2477 if (rsa) {
2478 len = RSA_bits(rsa);
2479 RSA_free(rsa);
2480 }
2481 EVP_PKEY_free(pk);
2482 }
2483
2484 if (len >= 0) {
2485 wpa_printf(MSG_DEBUG,
2486 "OpenSSL: RSA modulus size: %d bits", len);
2487 if (len < 3072) {
2488 preverify_ok = 0;
2489 openssl_tls_fail_event(
2490 conn, err_cert, err,
2491 depth, buf,
2492 "Insufficient RSA modulus size",
2493 TLS_FAIL_INSUFFICIENT_KEY_LEN);
2494 }
2495 }
2496 }
2497#endif /* CONFIG_SUITEB */
2498
bdee6ca0 2499#ifdef OPENSSL_IS_BORINGSSL
213e158c
JM		 2500 if (depth == 0 && (conn->flags & TLS_CONN_REQUEST_OCSP) &&
2501 preverify_ok) {
bdee6ca0
JM		 2502 enum ocsp_result res;
2503
213e158c
JM		 2504 res = check_ocsp_resp(conn->ssl_ctx, conn->ssl, err_cert,
2505 conn->peer_issuer,
2506 conn->peer_issuer_issuer);
bdee6ca0
JM		 2507 if (res == OCSP_REVOKED) {
2508 preverify_ok = 0;
2509 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2510 "certificate revoked",
2511 TLS_FAIL_REVOKED);
2512 if (err == X509_V_OK)
2513 X509_STORE_CTX_set_error(
2514 x509_ctx, X509_V_ERR_CERT_REVOKED);
2515 } else if (res != OCSP_GOOD &&
2516 (conn->flags & TLS_CONN_REQUIRE_OCSP)) {
2517 preverify_ok = 0;
2518 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2519 "bad certificate status response",
2520 TLS_FAIL_UNSPECIFIED);
2521 }
2522 }
2523#endif /* OPENSSL_IS_BORINGSSL */
2524
3c108b75 2525 if (depth == 0 && preverify_ok && context->event_cb != NULL)
7c0e1e27
PS		 2526 context->event_cb(context->cb_ctx,
2527 TLS_CERT_CHAIN_SUCCESS, NULL);
dd7fec1f 2528
6fc6879b
JM		 2529 return preverify_ok;
2530}
2531
2532
2533#ifndef OPENSSL_NO_STDIO
bd9b8b2b 2534static int tls_load_ca_der(struct tls_data *data, const char *ca_cert)
6fc6879b 2535{
bd9b8b2b 2536 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 2537 X509_LOOKUP *lookup;
2538 int ret = 0;
2539
68ae4773 2540 lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx),
6fc6879b
JM		 2541 X509_LOOKUP_file());
2542 if (lookup == NULL) {
2543 tls_show_errors(MSG_WARNING, __func__,
2544 "Failed add lookup for X509 store");
2545 return -1;
2546 }
2547
2548 if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
2549 unsigned long err = ERR_peek_error();
2550 tls_show_errors(MSG_WARNING, __func__,
2551 "Failed load CA in DER format");
2552 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2553 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2554 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
2555 "cert already in hash table error",
2556 __func__);
2557 } else
2558 ret = -1;
2559 }
2560
2561 return ret;
2562}
2563#endif /* OPENSSL_NO_STDIO */
2564
2565
bd9b8b2b
JM		 2566static int tls_connection_ca_cert(struct tls_data *data,
2567 struct tls_connection *conn,
6fc6879b
JM		 2568 const char *ca_cert, const u8 *ca_cert_blob,
2569 size_t ca_cert_blob_len, const char *ca_path)
2570{
bd9b8b2b 2571 SSL_CTX *ssl_ctx = data->ssl;
68ae4773 2572 X509_STORE *store;
6fc6879b
JM		 2573
2574 /*
2575 * Remove previously configured trusted CA certificates before adding
2576 * new ones.
2577 */
68ae4773
JM		 2578 store = X509_STORE_new();
2579 if (store == NULL) {
6fc6879b
JM		 2580 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
2581 "certificate store", __func__);
2582 return -1;
2583 }
68ae4773 2584 SSL_CTX_set_cert_store(ssl_ctx, store);
6fc6879b 2585
00468b46
JM		 2586 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2587 conn->ca_cert_verify = 1;
2588
2589 if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
2590 wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate "
2591 "chain");
2592 conn->cert_probe = 1;
2593 conn->ca_cert_verify = 0;
2594 return 0;
2595 }
2596
2597 if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
2598#ifdef CONFIG_SHA256
2599 const char *pos = ca_cert + 7;
2600 if (os_strncmp(pos, "server/sha256/", 14) != 0) {
2601 wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert "
2602 "hash value '%s'", ca_cert);
2603 return -1;
2604 }
2605 pos += 14;
2606 if (os_strlen(pos) != 32 * 2) {
2607 wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 "
2608 "hash length in ca_cert '%s'", ca_cert);
2609 return -1;
2610 }
2611 if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
2612 wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash "
2613 "value in ca_cert '%s'", ca_cert);
2614 return -1;
2615 }
2616 conn->server_cert_only = 1;
2617 wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server "
2618 "certificate match");
2619 return 0;
2620#else /* CONFIG_SHA256 */
2621 wpa_printf(MSG_INFO, "No SHA256 included in the build - "
2622 "cannot validate server certificate hash");
2623 return -1;
2624#endif /* CONFIG_SHA256 */
2625 }
2626
6fc6879b 2627 if (ca_cert_blob) {
fee31f76
JM		 2628 X509 *cert = d2i_X509(NULL,
2629 (const unsigned char **) &ca_cert_blob,
6fc6879b
JM		 2630 ca_cert_blob_len);
2631 if (cert == NULL) {
8ba809f6
SL		 2632 BIO *bio = BIO_new_mem_buf(ca_cert_blob,
2633 ca_cert_blob_len);
2634
2635 if (bio) {
2636 cert = PEM_read_bio_X509(bio, NULL, NULL, NULL);
2637 BIO_free(bio);
2638 }
2639
2640 if (!cert) {
2641 tls_show_errors(MSG_WARNING, __func__,
2642 "Failed to parse ca_cert_blob");
2643 return -1;
2644 }
2645
2646 while (ERR_get_error()) {
2647 /* Ignore errors from DER conversion. */
2648 }
6fc6879b
JM		 2649 }
2650
68ae4773
JM		 2651 if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx),
2652 cert)) {
6fc6879b
JM		 2653 unsigned long err = ERR_peek_error();
2654 tls_show_errors(MSG_WARNING, __func__,
2655 "Failed to add ca_cert_blob to "
2656 "certificate store");
2657 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2658 ERR_GET_REASON(err) ==
2659 X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2660 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
2661 "cert already in hash table error",
2662 __func__);
2663 } else {
2664 X509_free(cert);
2665 return -1;
2666 }
2667 }
2668 X509_free(cert);
2669 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
2670 "to certificate store", __func__);
6fc6879b
JM		 2671 return 0;
2672 }
2673
2a0cd067 2674#ifdef ANDROID
a8ef133f 2675 /* Single alias */
2a0cd067 2676 if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) {
f150db6c 2677 if (tls_add_ca_from_keystore(SSL_CTX_get_cert_store(ssl_ctx),
a8ef133f 2678 &ca_cert[11]) < 0)
2a0cd067 2679 return -1;
a8ef133f
RX		 2680 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2681 return 0;
2682 }
2a0cd067 2683
a8ef133f
RX		 2684 /* Multiple aliases separated by space */
2685 if (ca_cert && os_strncmp("keystores://", ca_cert, 12) == 0) {
2686 char *aliases = os_strdup(&ca_cert[12]);
2687 const char *delim = " ";
2688 int rc = 0;
2689 char *savedptr;
2690 char *alias;
2691
2692 if (!aliases)
2693 return -1;
2694 alias = strtok_r(aliases, delim, &savedptr);
2695 for (; alias; alias = strtok_r(NULL, delim, &savedptr)) {
2696 if (tls_add_ca_from_keystore_encoded(
f150db6c 2697 SSL_CTX_get_cert_store(ssl_ctx), alias)) {
a8ef133f
RX		 2698 wpa_printf(MSG_WARNING,
2699 "OpenSSL: %s - Failed to add ca_cert %s from keystore",
2700 __func__, alias);
2701 rc = -1;
2702 break;
2a0cd067
DS		 2703 }
2704 }
a8ef133f
RX		 2705 os_free(aliases);
2706 if (rc)
2707 return rc;
2708
2a0cd067
DS		 2709 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2710 return 0;
2711 }
2712#endif /* ANDROID */
2713
6fc6879b
JM		 2714#ifdef CONFIG_NATIVE_WINDOWS
2715 if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
2716 0) {
2717 wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
2718 "system certificate store");
6fc6879b
JM		 2719 return 0;
2720 }
2721#endif /* CONFIG_NATIVE_WINDOWS */
2722
2723 if (ca_cert || ca_path) {
2724#ifndef OPENSSL_NO_STDIO
2725 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
2726 1) {
2727 tls_show_errors(MSG_WARNING, __func__,
2728 "Failed to load root certificates");
2729 if (ca_cert &&
bd9b8b2b 2730 tls_load_ca_der(data, ca_cert) == 0) {
6fc6879b
JM		 2731 wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
2732 "DER format CA certificate",
2733 __func__);
2734 } else
2735 return -1;
2736 } else {
2737 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
2738 "certificate(s) loaded");
bd9b8b2b 2739 tls_get_errors(data);
6fc6879b 2740 }
6fc6879b
JM		 2741#else /* OPENSSL_NO_STDIO */
2742 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
2743 __func__);
2744 return -1;
2745#endif /* OPENSSL_NO_STDIO */
2746 } else {
2747 /* No ca_cert configured - do not try to verify server
2748 * certificate */
00468b46 2749 conn->ca_cert_verify = 0;
6fc6879b
JM		 2750 }
2751
2752 return 0;
2753}
2754
2755
bd9b8b2b 2756static int tls_global_ca_cert(struct tls_data *data, const char *ca_cert)
6fc6879b 2757{
bd9b8b2b
JM		 2758 SSL_CTX *ssl_ctx = data->ssl;
2759
6fc6879b
JM		 2760 if (ca_cert) {
2761 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
2762 {
2763 tls_show_errors(MSG_WARNING, __func__,
2764 "Failed to load root certificates");
2765 return -1;
2766 }
2767
2768 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
2769 "certificate(s) loaded");
2770
2771#ifndef OPENSSL_NO_STDIO
2772 /* Add the same CAs to the client certificate requests */
2773 SSL_CTX_set_client_CA_list(ssl_ctx,
2774 SSL_load_client_CA_file(ca_cert));
2775#endif /* OPENSSL_NO_STDIO */
159a7fbd
JB		 2776
2777 os_free(data->ca_cert);
2778 data->ca_cert = os_strdup(ca_cert);
6fc6879b
JM		 2779 }
2780
2781 return 0;
2782}
2783
2784
dd5d325b 2785int tls_global_set_verify(void *ssl_ctx, int check_crl, int strict)
6fc6879b
JM		 2786{
2787 int flags;
2788
2789 if (check_crl) {
bd9b8b2b
JM		 2790 struct tls_data *data = ssl_ctx;
2791 X509_STORE *cs = SSL_CTX_get_cert_store(data->ssl);
6fc6879b
JM		 2792 if (cs == NULL) {
2793 tls_show_errors(MSG_INFO, __func__, "Failed to get "
2794 "certificate store when enabling "
2795 "check_crl");
2796 return -1;
2797 }
2798 flags = X509_V_FLAG_CRL_CHECK;
2799 if (check_crl == 2)
2800 flags |= X509_V_FLAG_CRL_CHECK_ALL;
2801 X509_STORE_set_flags(cs, flags);
dd5d325b 2802
159a7fbd 2803 data->check_crl = check_crl;
dd5d325b 2804 data->check_crl_strict = strict;
159a7fbd 2805 os_get_reltime(&data->crl_last_reload);
6fc6879b
JM		 2806 }
2807 return 0;
2808}
2809
2810
2811static int tls_connection_set_subject_match(struct tls_connection *conn,
2812 const char *subject_match,
01f809c7 2813 const char *altsubject_match,
cebee30f 2814 const char *suffix_match,
841205a1
JB		 2815 const char *domain_match,
2816 const char *check_cert_subject)
6fc6879b
JM		 2817{
2818 os_free(conn->subject_match);
2819 conn->subject_match = NULL;
2820 if (subject_match) {
2821 conn->subject_match = os_strdup(subject_match);
2822 if (conn->subject_match == NULL)
2823 return -1;
2824 }
2825
2826 os_free(conn->altsubject_match);
2827 conn->altsubject_match = NULL;
2828 if (altsubject_match) {
2829 conn->altsubject_match = os_strdup(altsubject_match);
2830 if (conn->altsubject_match == NULL)
2831 return -1;
2832 }
2833
01f809c7
JM		 2834 os_free(conn->suffix_match);
2835 conn->suffix_match = NULL;
2836 if (suffix_match) {
2837 conn->suffix_match = os_strdup(suffix_match);
2838 if (conn->suffix_match == NULL)
2839 return -1;
2840 }
2841
cebee30f
JM		 2842 os_free(conn->domain_match);
2843 conn->domain_match = NULL;
2844 if (domain_match) {
2845 conn->domain_match = os_strdup(domain_match);
2846 if (conn->domain_match == NULL)
2847 return -1;
2848 }
2849
841205a1
JB		 2850 os_free(conn->check_cert_subject);
2851 conn->check_cert_subject = NULL;
2852 if (check_cert_subject) {
2853 conn->check_cert_subject = os_strdup(check_cert_subject);
2854 if (!conn->check_cert_subject)
2855 return -1;
2856 }
2857
6fc6879b
JM		 2858 return 0;
2859}
2860
2861
1c9663cf
JM		 2862#ifdef CONFIG_SUITEB
2863#if OPENSSL_VERSION_NUMBER >= 0x10002000L
2864static int suiteb_cert_cb(SSL *ssl, void *arg)
2865{
2866 struct tls_connection *conn = arg;
2867
2868 /*
2869 * This cert_cb() is not really the best location for doing a
2870 * constraint check for the ServerKeyExchange message, but this seems to
2871 * be the only place where the current OpenSSL sequence can be
2872 * terminated cleanly with an TLS alert going out to the server.
2873 */
2874
2875 if (!(conn->flags & TLS_CONN_SUITEB))
2876 return 1;
2877
2878 /* DHE is enabled only with DHE-RSA-AES256-GCM-SHA384 */
2879 if (conn->cipher_suite != 0x9f)
2880 return 1;
2881
2882 if (conn->server_dh_prime_len >= 3072)
2883 return 1;
2884
2885 wpa_printf(MSG_DEBUG,
2886 "OpenSSL: Server DH prime length (%d bits) not sufficient for Suite B RSA - reject handshake",
2887 conn->server_dh_prime_len);
2888 return 0;
2889}
2890#endif /* OPENSSL_VERSION_NUMBER */
2891#endif /* CONFIG_SUITEB */
2892
2893
a2c442be
JM		 2894static int tls_set_conn_flags(struct tls_connection *conn, unsigned int flags,
2895 const char *openssl_ciphers)
93bc6549 2896{
1c9663cf
JM		 2897 SSL *ssl = conn->ssl;
2898
93bc6549
JM		 2899#ifdef SSL_OP_NO_TICKET
2900 if (flags & TLS_CONN_DISABLE_SESSION_TICKET)
2901 SSL_set_options(ssl, SSL_OP_NO_TICKET);
93bc6549
JM		 2902 else
2903 SSL_clear_options(ssl, SSL_OP_NO_TICKET);
93bc6549
JM		 2904#endif /* SSL_OP_NO_TICKET */
2905
2906#ifdef SSL_OP_NO_TLSv1
2907 if (flags & TLS_CONN_DISABLE_TLSv1_0)
2908 SSL_set_options(ssl, SSL_OP_NO_TLSv1);
2909 else
2910 SSL_clear_options(ssl, SSL_OP_NO_TLSv1);
2911#endif /* SSL_OP_NO_TLSv1 */
2912#ifdef SSL_OP_NO_TLSv1_1
2913 if (flags & TLS_CONN_DISABLE_TLSv1_1)
2914 SSL_set_options(ssl, SSL_OP_NO_TLSv1_1);
2915 else
2916 SSL_clear_options(ssl, SSL_OP_NO_TLSv1_1);
2917#endif /* SSL_OP_NO_TLSv1_1 */
2918#ifdef SSL_OP_NO_TLSv1_2
2919 if (flags & TLS_CONN_DISABLE_TLSv1_2)
2920 SSL_set_options(ssl, SSL_OP_NO_TLSv1_2);
2921 else
2922 SSL_clear_options(ssl, SSL_OP_NO_TLSv1_2);
2923#endif /* SSL_OP_NO_TLSv1_2 */
bbbc7e80
JM		 2924#ifdef SSL_OP_NO_TLSv1_3
2925 if (flags & TLS_CONN_DISABLE_TLSv1_3)
2926 SSL_set_options(ssl, SSL_OP_NO_TLSv1_3);
2927 else
2928 SSL_clear_options(ssl, SSL_OP_NO_TLSv1_3);
2929#endif /* SSL_OP_NO_TLSv1_3 */
cc9c4fec
JM		 2930#if OPENSSL_VERSION_NUMBER >= 0x10100000L
2931 if (flags & (TLS_CONN_ENABLE_TLSv1_0 |
2932 TLS_CONN_ENABLE_TLSv1_1 |
2933 TLS_CONN_ENABLE_TLSv1_2)) {
2934 int version = 0;
2935
2936 /* Explicit request to enable TLS versions even if needing to
2937 * override systemwide policies. */
2938 if (flags & TLS_CONN_ENABLE_TLSv1_0) {
2939 version = TLS1_VERSION;
2940 } else if (flags & TLS_CONN_ENABLE_TLSv1_1) {
2941 if (!(flags & TLS_CONN_DISABLE_TLSv1_0))
2942 version = TLS1_1_VERSION;
2943 } else if (flags & TLS_CONN_ENABLE_TLSv1_2) {
2944 if (!(flags & (TLS_CONN_DISABLE_TLSv1_0 |
2945 TLS_CONN_DISABLE_TLSv1_1)))
2946 version = TLS1_2_VERSION;
2947 }
2948 if (!version) {
2949 wpa_printf(MSG_DEBUG,
2950 "OpenSSL: Invalid TLS version configuration");
2951 return -1;
2952 }
2953
2954 if (SSL_set_min_proto_version(ssl, version) != 1) {
2955 wpa_printf(MSG_DEBUG,
2956 "OpenSSL: Failed to set minimum TLS version");
2957 return -1;
2958 }
2959 }
2960#endif /* >= 1.1.0 */
2961
60ed2f24 2962#ifdef CONFIG_SUITEB
c54cc8bb
JM		 2963#ifdef OPENSSL_IS_BORINGSSL
2964 /* Start with defaults from BoringSSL */
2965 SSL_CTX_set_verify_algorithm_prefs(conn->ssl_ctx, NULL, 0);
2966#endif /* OPENSSL_IS_BORINGSSL */
1c9663cf 2967#if OPENSSL_VERSION_NUMBER >= 0x10002000L
2ed70c75
JM		 2968 if (flags & TLS_CONN_SUITEB_NO_ECDH) {
2969 const char *ciphers = "DHE-RSA-AES256-GCM-SHA384";
2970
a2c442be
JM		 2971 if (openssl_ciphers) {
2972 wpa_printf(MSG_DEBUG,
2973 "OpenSSL: Override ciphers for Suite B (no ECDH): %s",
2974 openssl_ciphers);
2975 ciphers = openssl_ciphers;
2976 }
2ed70c75
JM		 2977 if (SSL_set_cipher_list(ssl, ciphers) != 1) {
2978 wpa_printf(MSG_INFO,
2979 "OpenSSL: Failed to set Suite B ciphers");
2980 return -1;
2981 }
2982 } else if (flags & TLS_CONN_SUITEB) {
60ed2f24
JM		 2983 EC_KEY *ecdh;
2984 const char *ciphers =
2985 "ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384";
35525023 2986 int nid[1] = { NID_secp384r1 };
60ed2f24 2987
a2c442be
JM		 2988 if (openssl_ciphers) {
2989 wpa_printf(MSG_DEBUG,
2990 "OpenSSL: Override ciphers for Suite B: %s",
2991 openssl_ciphers);
2992 ciphers = openssl_ciphers;
2993 }
60ed2f24
JM		 2994 if (SSL_set_cipher_list(ssl, ciphers) != 1) {
2995 wpa_printf(MSG_INFO,
2996 "OpenSSL: Failed to set Suite B ciphers");
2997 return -1;
2998 }
2999
35525023 3000 if (SSL_set1_curves(ssl, nid, 1) != 1) {
60ed2f24
JM		 3001 wpa_printf(MSG_INFO,
3002 "OpenSSL: Failed to set Suite B curves");
3003 return -1;
3004 }
60ed2f24
JM		 3005
3006 ecdh = EC_KEY_new_by_curve_name(NID_secp384r1);
3007 if (!ecdh || SSL_set_tmp_ecdh(ssl, ecdh) != 1) {
3008 EC_KEY_free(ecdh);
3009 wpa_printf(MSG_INFO,
3010 "OpenSSL: Failed to set ECDH parameter");
3011 return -1;
3012 }
3013 EC_KEY_free(ecdh);
2ed70c75
JM		 3014 }
3015 if (flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) {
c54cc8bb
JM		 3016#ifdef OPENSSL_IS_BORINGSSL
3017 uint16_t sigalgs[1] = { SSL_SIGN_RSA_PKCS1_SHA384 };
3018
3019 if (SSL_CTX_set_verify_algorithm_prefs(conn->ssl_ctx, sigalgs,
3020 1) != 1) {
3021 wpa_printf(MSG_INFO,
3022 "OpenSSL: Failed to set Suite B sigalgs");
3023 return -1;
3024 }
3025#else /* OPENSSL_IS_BORINGSSL */
2ed70c75
JM		 3026 /* ECDSA+SHA384 if need to add EC support here */
3027 if (SSL_set1_sigalgs_list(ssl, "RSA+SHA384") != 1) {
3028 wpa_printf(MSG_INFO,
3029 "OpenSSL: Failed to set Suite B sigalgs");
3030 return -1;
3031 }
b9dc63c2 3032#endif /* OPENSSL_IS_BORINGSSL */
60ed2f24
JM		 3033
3034 SSL_set_options(ssl, SSL_OP_NO_TLSv1);
3035 SSL_set_options(ssl, SSL_OP_NO_TLSv1_1);
1c9663cf
JM		 3036 SSL_set_cert_cb(ssl, suiteb_cert_cb, conn);
3037 }
3038#else /* OPENSSL_VERSION_NUMBER < 0x10002000L */
3039 if (flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) {
3040 wpa_printf(MSG_ERROR,
3041 "OpenSSL: Suite B RSA case not supported with this OpenSSL version");
3042 return -1;
60ed2f24 3043 }
1c9663cf 3044#endif /* OPENSSL_VERSION_NUMBER */
7a47f34b
JM		 3045
3046#ifdef OPENSSL_IS_BORINGSSL
3047 if (openssl_ciphers && os_strcmp(openssl_ciphers, "SUITEB192") == 0) {
aa6de8e6 3048 uint16_t sigalgs[1] = { SSL_SIGN_ECDSA_SECP384R1_SHA384 };
7a47f34b
JM		 3049 int nid[1] = { NID_secp384r1 };
3050
3051 if (SSL_set1_curves(ssl, nid, 1) != 1) {
3052 wpa_printf(MSG_INFO,
3053 "OpenSSL: Failed to set Suite B curves");
3054 return -1;
3055 }
aa6de8e6
JM		 3056
3057 if (SSL_CTX_set_verify_algorithm_prefs(conn->ssl_ctx, sigalgs,
3058 1) != 1) {
3059 wpa_printf(MSG_INFO,
3060 "OpenSSL: Failed to set Suite B sigalgs");
3061 return -1;
3062 }
7a47f34b 3063 }
cc9c4fec
JM		 3064#else /* OPENSSL_IS_BORINGSSL */
3065 if (!(flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) &&
3066 openssl_ciphers && SSL_set_cipher_list(ssl, openssl_ciphers) != 1) {
3067 wpa_printf(MSG_INFO,
3068 "OpenSSL: Failed to set openssl_ciphers '%s'",
3069 openssl_ciphers);
3070 return -1;
3071 }
7a47f34b 3072#endif /* OPENSSL_IS_BORINGSSL */
cc9c4fec
JM		 3073#else /* CONFIG_SUITEB */
3074 if (openssl_ciphers && SSL_set_cipher_list(ssl, openssl_ciphers) != 1) {
3075 wpa_printf(MSG_INFO,
3076 "OpenSSL: Failed to set openssl_ciphers '%s'",
3077 openssl_ciphers);
3078 return -1;
3079 }
60ed2f24
JM		 3080#endif /* CONFIG_SUITEB */
3081
3082 return 0;
93bc6549
JM		 3083}
3084
3085
6fc6879b 3086int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
bfbebd26
JM		 3087 int verify_peer, unsigned int flags,
3088 const u8 *session_ctx, size_t session_ctx_len)
6fc6879b 3089{
bf206cad 3090 static int counter = 0;
acf36f31 3091 struct tls_data *data = ssl_ctx;
bf206cad 3092
6fc6879b
JM		 3093 if (conn == NULL)
3094 return -1;
3095
3096 if (verify_peer) {
00468b46 3097 conn->ca_cert_verify = 1;
6fc6879b
JM		 3098 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
3099 SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
3100 SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
3101 } else {
00468b46 3102 conn->ca_cert_verify = 0;
6fc6879b
JM		 3103 SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
3104 }
3105
a2c442be 3106 if (tls_set_conn_flags(conn, flags, NULL) < 0)
60ed2f24 3107 return -1;
93bc6549
JM		 3108 conn->flags = flags;
3109
6fc6879b
JM		 3110 SSL_set_accept_state(conn->ssl);
3111
acf36f31
JM		 3112 if (data->tls_session_lifetime == 0) {
3113 /*
3114 * Set session id context to a unique value to make sure
3115 * session resumption cannot be used either through session
3116 * caching or TLS ticket extension.
3117 */
3118 counter++;
3119 SSL_set_session_id_context(conn->ssl,
3120 (const unsigned char *) &counter,
3121 sizeof(counter));
3122 } else if (session_ctx) {
3123 SSL_set_session_id_context(conn->ssl, session_ctx,
3124 session_ctx_len);
3125 }
bf206cad 3126
6fc6879b
JM		 3127 return 0;
3128}
3129
3130
3131static int tls_connection_client_cert(struct tls_connection *conn,
3132 const char *client_cert,
3133 const u8 *client_cert_blob,
3134 size_t client_cert_blob_len)
3135{
3136 if (client_cert == NULL && client_cert_blob == NULL)
3137 return 0;
3138
21cb63ff 3139#ifdef PKCS12_FUNCS
df426738 3140#if OPENSSL_VERSION_NUMBER < 0x10002000L || defined(LIBRESSL_VERSION_NUMBER)
21cb63ff
JM		 3141 /*
3142 * Clear previously set extra chain certificates, if any, from PKCS#12
3143 * processing in tls_parse_pkcs12() to allow OpenSSL to build a new
3144 * chain properly.
3145 */
3146 SSL_CTX_clear_extra_chain_certs(conn->ssl_ctx);
3147#endif /* OPENSSL_VERSION_NUMBER < 0x10002000L */
3148#endif /* PKCS12_FUNCS */
3149
6fc6879b
JM		 3150 if (client_cert_blob &&
3151 SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
3152 client_cert_blob_len) == 1) {
3153 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
3154 "OK");
3155 return 0;
3156 } else if (client_cert_blob) {
3157 tls_show_errors(MSG_DEBUG, __func__,
3158 "SSL_use_certificate_ASN1 failed");
3159 }
3160
3161 if (client_cert == NULL)
3162 return -1;
3163
2a0cd067
DS		 3164#ifdef ANDROID
3165 if (os_strncmp("keystore://", client_cert, 11) == 0) {
3166 BIO *bio = BIO_from_keystore(&client_cert[11]);
3167 X509 *x509 = NULL;
3168 int ret = -1;
3169 if (bio) {
3170 x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
2a0cd067
DS		 3171 }
3172 if (x509) {
3173 if (SSL_use_certificate(conn->ssl, x509) == 1)
3174 ret = 0;
3175 X509_free(x509);
3176 }
6d08f23f
PS		 3177
3178 /* Read additional certificates into the chain. */
3179 while (bio) {
3180 x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
3181 if (x509) {
3182 /* Takes ownership of x509 */
3183 SSL_add0_chain_cert(conn->ssl, x509);
3184 } else {
3185 BIO_free(bio);
3186 bio = NULL;
3187 }
3188 }
2a0cd067
DS		 3189 return ret;
3190 }
3191#endif /* ANDROID */
3192
6fc6879b
JM		 3193#ifndef OPENSSL_NO_STDIO
3194 if (SSL_use_certificate_file(conn->ssl, client_cert,
3195 SSL_FILETYPE_ASN1) == 1) {
3196 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
3197 " --> OK");
3198 return 0;
6fc6879b
JM		 3199 }
3200
bf84e78c
JM		 3201#if OPENSSL_VERSION_NUMBER >= 0x10100000L && \
3202 !defined(LIBRESSL_VERSION_NUMBER) && !defined(OPENSSL_IS_BORINGSSL)
658c3980 3203 if (SSL_use_certificate_chain_file(conn->ssl, client_cert) == 1) {
effab86f 3204 ERR_clear_error();
658c3980 3205 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_chain_file"
6fc6879b
JM		 3206 " --> OK");
3207 return 0;
6fc6879b 3208 }
568e890e
JM		 3209#else
3210 if (SSL_use_certificate_file(conn->ssl, client_cert,
3211 SSL_FILETYPE_PEM) == 1) {
3212 ERR_clear_error();
3213 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
3214 " --> OK");
3215 return 0;
3216 }
3217#endif
effab86f
JM		 3218
3219 tls_show_errors(MSG_DEBUG, __func__,
3220 "SSL_use_certificate_file failed");
6fc6879b
JM		 3221#else /* OPENSSL_NO_STDIO */
3222 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
3223#endif /* OPENSSL_NO_STDIO */
3224
3225 return -1;
3226}
3227
3228
bd9b8b2b
JM		 3229static int tls_global_client_cert(struct tls_data *data,
3230 const char *client_cert)
6fc6879b
JM		 3231{
3232#ifndef OPENSSL_NO_STDIO
bd9b8b2b
JM		 3233 SSL_CTX *ssl_ctx = data->ssl;
3234
6fc6879b
JM		 3235 if (client_cert == NULL)
3236 return 0;
3237
3238 if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
3239 SSL_FILETYPE_ASN1) != 1 &&
65897747 3240 SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 &&
6fc6879b
JM		 3241 SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
3242 SSL_FILETYPE_PEM) != 1) {
3243 tls_show_errors(MSG_INFO, __func__,
3244 "Failed to load client certificate");
3245 return -1;
3246 }
3247 return 0;
3248#else /* OPENSSL_NO_STDIO */
3249 if (client_cert == NULL)
3250 return 0;
3251 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
3252 return -1;
3253#endif /* OPENSSL_NO_STDIO */
3254}
3255
3256
6fc6879b 3257#ifdef PKCS12_FUNCS
bd9b8b2b 3258static int tls_parse_pkcs12(struct tls_data *data, SSL *ssl, PKCS12 *p12,
6fc6879b
JM		 3259 const char *passwd)
3260{
3261 EVP_PKEY *pkey;
3262 X509 *cert;
3263 STACK_OF(X509) *certs;
3264 int res = 0;
3265 char buf[256];
3266
3267 pkey = NULL;
3268 cert = NULL;
3269 certs = NULL;
c07e7b43
JM		 3270 if (!passwd)
3271 passwd = "";
6fc6879b
JM		 3272 if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
3273 tls_show_errors(MSG_DEBUG, __func__,
3274 "Failed to parse PKCS12 file");
3275 PKCS12_free(p12);
3276 return -1;
3277 }
3278 wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
3279
3280 if (cert) {
3281 X509_NAME_oneline(X509_get_subject_name(cert), buf,
3282 sizeof(buf));
3283 wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
3284 "subject='%s'", buf);
3285 if (ssl) {
3286 if (SSL_use_certificate(ssl, cert) != 1)
3287 res = -1;
3288 } else {
bd9b8b2b 3289 if (SSL_CTX_use_certificate(data->ssl, cert) != 1)
6fc6879b
JM		 3290 res = -1;
3291 }
3292 X509_free(cert);
3293 }
3294
3295 if (pkey) {
3296 wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
3297 if (ssl) {
3298 if (SSL_use_PrivateKey(ssl, pkey) != 1)
3299 res = -1;
3300 } else {
bd9b8b2b 3301 if (SSL_CTX_use_PrivateKey(data->ssl, pkey) != 1)
6fc6879b
JM		 3302 res = -1;
3303 }
3304 EVP_PKEY_free(pkey);
3305 }
3306
3307 if (certs) {
36e82060 3308#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
dda091cf
AB		 3309 if (ssl)
3310 SSL_clear_chain_certs(ssl);
3311 else
3312 SSL_CTX_clear_chain_certs(data->ssl);
de2a7b79
JM		 3313 while ((cert = sk_X509_pop(certs)) != NULL) {
3314 X509_NAME_oneline(X509_get_subject_name(cert), buf,
3315 sizeof(buf));
3316 wpa_printf(MSG_DEBUG, "TLS: additional certificate"
3317 " from PKCS12: subject='%s'", buf);
dda091cf
AB		 3318 if ((ssl && SSL_add1_chain_cert(ssl, cert) != 1) ||
3319 (!ssl && SSL_CTX_add1_chain_cert(data->ssl,
3320 cert) != 1)) {
20f331b7
JM		 3321 tls_show_errors(MSG_DEBUG, __func__,
3322 "Failed to add additional certificate");
de2a7b79 3323 res = -1;
8bcf8de8 3324 X509_free(cert);
de2a7b79
JM		 3325 break;
3326 }
8bcf8de8 3327 X509_free(cert);
de2a7b79 3328 }
20f331b7
JM		 3329 if (!res) {
3330 /* Try to continue anyway */
3331 }
8bcf8de8 3332 sk_X509_pop_free(certs, X509_free);
226cdea6 3333#ifndef OPENSSL_IS_BORINGSSL
dda091cf
AB		 3334 if (ssl)
3335 res = SSL_build_cert_chain(
3336 ssl,
3337 SSL_BUILD_CHAIN_FLAG_CHECK |
3338 SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR);
3339 else
3340 res = SSL_CTX_build_cert_chain(
3341 data->ssl,
3342 SSL_BUILD_CHAIN_FLAG_CHECK |
3343 SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR);
de2a7b79
JM		 3344 if (!res) {
3345 tls_show_errors(MSG_DEBUG, __func__,
3346 "Failed to build certificate chain");
3347 } else if (res == 2) {
3348 wpa_printf(MSG_DEBUG,
3349 "TLS: Ignore certificate chain verification error when building chain with PKCS#12 extra certificates");
3350 }
226cdea6 3351#endif /* OPENSSL_IS_BORINGSSL */
de2a7b79
JM		 3352 /*
3353 * Try to continue regardless of result since it is possible for
3354 * the extra certificates not to be required.
3355 */
3356 res = 0;
3357#else /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
bd9b8b2b 3358 SSL_CTX_clear_extra_chain_certs(data->ssl);
6fc6879b
JM		 3359 while ((cert = sk_X509_pop(certs)) != NULL) {
3360 X509_NAME_oneline(X509_get_subject_name(cert), buf,
3361 sizeof(buf));
3362 wpa_printf(MSG_DEBUG, "TLS: additional certificate"
3363 " from PKCS12: subject='%s'", buf);
3364 /*
3365 * There is no SSL equivalent for the chain cert - so
3366 * always add it to the context...
3367 */
bd9b8b2b
JM		 3368 if (SSL_CTX_add_extra_chain_cert(data->ssl, cert) != 1)
3369 {
8bcf8de8 3370 X509_free(cert);
6fc6879b
JM		 3371 res = -1;
3372 break;
3373 }
3374 }
8bcf8de8 3375 sk_X509_pop_free(certs, X509_free);
de2a7b79 3376#endif /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
6fc6879b
JM		 3377 }
3378
3379 PKCS12_free(p12);
3380
3381 if (res < 0)
bd9b8b2b 3382 tls_get_errors(data);
6fc6879b
JM		 3383
3384 return res;
3385}
3386#endif /* PKCS12_FUNCS */
3387
3388
bd9b8b2b
JM		 3389static int tls_read_pkcs12(struct tls_data *data, SSL *ssl,
3390 const char *private_key, const char *passwd)
6fc6879b
JM		 3391{
3392#ifdef PKCS12_FUNCS
3393 FILE *f;
3394 PKCS12 *p12;
3395
3396 f = fopen(private_key, "rb");
3397 if (f == NULL)
3398 return -1;
3399
3400 p12 = d2i_PKCS12_fp(f, NULL);
3401 fclose(f);
3402
3403 if (p12 == NULL) {
3404 tls_show_errors(MSG_INFO, __func__,
3405 "Failed to use PKCS#12 file");
3406 return -1;
3407 }
3408
bd9b8b2b 3409 return tls_parse_pkcs12(data, ssl, p12, passwd);
6fc6879b
JM		 3410
3411#else /* PKCS12_FUNCS */
3412 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
3413 "p12/pfx files");
3414 return -1;
3415#endif /* PKCS12_FUNCS */
3416}
3417
3418
bd9b8b2b 3419static int tls_read_pkcs12_blob(struct tls_data *data, SSL *ssl,
6fc6879b
JM		 3420 const u8 *blob, size_t len, const char *passwd)
3421{
3422#ifdef PKCS12_FUNCS
3423 PKCS12 *p12;
3424
fee31f76 3425 p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len);
6fc6879b
JM		 3426 if (p12 == NULL) {
3427 tls_show_errors(MSG_INFO, __func__,
3428 "Failed to use PKCS#12 blob");
3429 return -1;
3430 }
3431
bd9b8b2b 3432 return tls_parse_pkcs12(data, ssl, p12, passwd);
6fc6879b
JM		 3433
3434#else /* PKCS12_FUNCS */
3435 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
3436 "p12/pfx blobs");
3437 return -1;
3438#endif /* PKCS12_FUNCS */
3439}
3440
3441
e572cb63 3442#ifndef OPENSSL_NO_ENGINE
e59c91af
DS		 3443static int tls_engine_get_cert(struct tls_connection *conn,
3444 const char *cert_id,
3445 X509 **cert)
3446{
e59c91af
DS		 3447 /* this runs after the private key is loaded so no PIN is required */
3448 struct {
3449 const char *cert_id;
3450 X509 *cert;
3451 } params;
3452 params.cert_id = cert_id;
3453 params.cert = NULL;
3454
3455 if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL",
3456 0, &params, NULL, 1)) {
fd4fb281
MG		 3457 unsigned long err = ERR_get_error();
3458
e59c91af
DS		 3459 wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id"
3460 " '%s' [%s]", cert_id,
fd4fb281
MG		 3461 ERR_error_string(err, NULL));
3462 if (tls_is_pin_error(err))
3463 return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
e59c91af
DS		 3464 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
3465 }
3466 if (!params.cert) {
3467 wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id"
3468 " '%s'", cert_id);
3469 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
3470 }
3471 *cert = params.cert;
3472 return 0;
e59c91af 3473}
e572cb63 3474#endif /* OPENSSL_NO_ENGINE */
e59c91af
DS		 3475
3476
3477static int tls_connection_engine_client_cert(struct tls_connection *conn,
3478 const char *cert_id)
3479{
3480#ifndef OPENSSL_NO_ENGINE
3481 X509 *cert;
3482
3483 if (tls_engine_get_cert(conn, cert_id, &cert))
3484 return -1;
3485
3486 if (!SSL_use_certificate(conn->ssl, cert)) {
3487 tls_show_errors(MSG_ERROR, __func__,
3488 "SSL_use_certificate failed");
3489 X509_free(cert);
3490 return -1;
3491 }
3492 X509_free(cert);
3493 wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> "
3494 "OK");
3495 return 0;
3496
3497#else /* OPENSSL_NO_ENGINE */
3498 return -1;
3499#endif /* OPENSSL_NO_ENGINE */
3500}
3501
3502
bd9b8b2b 3503static int tls_connection_engine_ca_cert(struct tls_data *data,
e59c91af
DS		 3504 struct tls_connection *conn,
3505 const char *ca_cert_id)
3506{
3507#ifndef OPENSSL_NO_ENGINE
3508 X509 *cert;
bd9b8b2b 3509 SSL_CTX *ssl_ctx = data->ssl;
68ae4773 3510 X509_STORE *store;
e59c91af
DS		 3511
3512 if (tls_engine_get_cert(conn, ca_cert_id, &cert))
3513 return -1;
3514
3515 /* start off the same as tls_connection_ca_cert */
68ae4773
JM		 3516 store = X509_STORE_new();
3517 if (store == NULL) {
e59c91af
DS		 3518 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
3519 "certificate store", __func__);
3520 X509_free(cert);
3521 return -1;
3522 }
68ae4773
JM		 3523 SSL_CTX_set_cert_store(ssl_ctx, store);
3524 if (!X509_STORE_add_cert(store, cert)) {
e59c91af
DS		 3525 unsigned long err = ERR_peek_error();
3526 tls_show_errors(MSG_WARNING, __func__,
3527 "Failed to add CA certificate from engine "
3528 "to certificate store");
3529 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
3530 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
3531 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert"
3532 " already in hash table error",
3533 __func__);
3534 } else {
3535 X509_free(cert);
3536 return -1;
3537 }
3538 }
3539 X509_free(cert);
3540 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
3541 "to certificate store", __func__);
3542 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
d8858cad
CW		 3543 conn->ca_cert_verify = 1;
3544
e59c91af
DS		 3545 return 0;
3546
3547#else /* OPENSSL_NO_ENGINE */
3548 return -1;
3549#endif /* OPENSSL_NO_ENGINE */
3550}
3551
3552
6fc6879b
JM		 3553static int tls_connection_engine_private_key(struct tls_connection *conn)
3554{
aeeb0bca 3555#if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
6fc6879b
JM		 3556 if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
3557 tls_show_errors(MSG_ERROR, __func__,
3558 "ENGINE: cannot use private key for TLS");
3559 return -1;
3560 }
3561 if (!SSL_check_private_key(conn->ssl)) {
3562 tls_show_errors(MSG_INFO, __func__,
3563 "Private key failed verification");
3564 return -1;
3565 }
3566 return 0;
3567#else /* OPENSSL_NO_ENGINE */
3568 wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
3569 "engine support was not compiled in");
3570 return -1;
3571#endif /* OPENSSL_NO_ENGINE */
3572}
3573
3574
63942cf0
DB		 3575#ifndef OPENSSL_NO_STDIO
3576static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
89971d8b 3577{
63942cf0
DB		 3578 if (!password)
3579 return 0;
3580 os_strlcpy(buf, (const char *) password, size);
3581 return os_strlen(buf);
3582}
3583#endif /* OPENSSL_NO_STDIO */
3584
3585
3586static int tls_use_private_key_file(struct tls_data *data, SSL *ssl,
3587 const char *private_key,
3588 const char *private_key_passwd)
3589{
3590#ifndef OPENSSL_NO_STDIO
3591 BIO *bio;
3592 EVP_PKEY *pkey;
3593 int ret;
3594
3595 /* First try ASN.1 (DER). */
3596 bio = BIO_new_file(private_key, "r");
3597 if (!bio)
3598 return -1;
3599 pkey = d2i_PrivateKey_bio(bio, NULL);
3600 BIO_free(bio);
3601
3602 if (pkey) {
3603 wpa_printf(MSG_DEBUG, "OpenSSL: %s (DER) --> loaded", __func__);
3604 } else {
3605 /* Try PEM with the provided password. */
3606 bio = BIO_new_file(private_key, "r");
3607 if (!bio)
3608 return -1;
3609 pkey = PEM_read_bio_PrivateKey(bio, NULL, tls_passwd_cb,
3610 (void *) private_key_passwd);
3611 BIO_free(bio);
3612 if (!pkey)
3613 return -1;
3614 wpa_printf(MSG_DEBUG, "OpenSSL: %s (PEM) --> loaded", __func__);
3615 /* Clear errors from the previous failed load. */
3616 ERR_clear_error();
89971d8b 3617 }
63942cf0
DB		 3618
3619 if (ssl)
3620 ret = SSL_use_PrivateKey(ssl, pkey);
3621 else
3622 ret = SSL_CTX_use_PrivateKey(data->ssl, pkey);
3623
3624 EVP_PKEY_free(pkey);
3625 return ret == 1 ? 0 : -1;
3626#else /* OPENSSL_NO_STDIO */
3627 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
3628 return -1;
3629#endif /* OPENSSL_NO_STDIO */
89971d8b
JM		 3630}
3631
3632
bd9b8b2b 3633static int tls_connection_private_key(struct tls_data *data,
6fc6879b
JM		 3634 struct tls_connection *conn,
3635 const char *private_key,
3636 const char *private_key_passwd,
3637 const u8 *private_key_blob,
3638 size_t private_key_blob_len)
3639{
6fc6879b
JM		 3640 int ok;
3641
3642 if (private_key == NULL && private_key_blob == NULL)
3643 return 0;
3644
6fc6879b
JM		 3645 ok = 0;
3646 while (private_key_blob) {
3647 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
3648 (u8 *) private_key_blob,
3649 private_key_blob_len) == 1) {
3650 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
3651 "ASN1(EVP_PKEY_RSA) --> OK");
3652 ok = 1;
3653 break;
6fc6879b
JM		 3654 }
3655
3656 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
3657 (u8 *) private_key_blob,
3658 private_key_blob_len) == 1) {
3659 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
3660 "ASN1(EVP_PKEY_DSA) --> OK");
3661 ok = 1;
3662 break;
6fc6879b
JM		 3663 }
3664
3665 if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
3666 (u8 *) private_key_blob,
3667 private_key_blob_len) == 1) {
3668 wpa_printf(MSG_DEBUG, "OpenSSL: "
3669 "SSL_use_RSAPrivateKey_ASN1 --> OK");
3670 ok = 1;
3671 break;
6fc6879b
JM		 3672 }
3673
bd9b8b2b 3674 if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob,
149143e3
DB		 3675 private_key_blob_len,
3676 private_key_passwd) == 0) {
6fc6879b
JM		 3677 wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
3678 "OK");
3679 ok = 1;
3680 break;
3681 }
3682
3683 break;
3684 }
3685
3686 while (!ok && private_key) {
63942cf0
DB		 3687 if (tls_use_private_key_file(data, conn->ssl, private_key,
3688 private_key_passwd) == 0) {
6fc6879b
JM		 3689 ok = 1;
3690 break;
6fc6879b 3691 }
6fc6879b 3692
149143e3
DB		 3693 if (tls_read_pkcs12(data, conn->ssl, private_key,
3694 private_key_passwd) == 0) {
6fc6879b
JM		 3695 wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
3696 "--> OK");
3697 ok = 1;
3698 break;
3699 }
3700
3701 if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
3702 wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
3703 "access certificate store --> OK");
3704 ok = 1;
3705 break;
3706 }
3707
3708 break;
3709 }
3710
3711 if (!ok) {
effab86f
JM		 3712 tls_show_errors(MSG_INFO, __func__,
3713 "Failed to load private key");
6fc6879b
JM		 3714 return -1;
3715 }
3716 ERR_clear_error();
55651a4b 3717
6fc6879b
JM		 3718 if (!SSL_check_private_key(conn->ssl)) {
3719 tls_show_errors(MSG_INFO, __func__, "Private key failed "
3720 "verification");
3721 return -1;
3722 }
3723
3724 wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
3725 return 0;
3726}
3727
3728
bd9b8b2b
JM		 3729static int tls_global_private_key(struct tls_data *data,
3730 const char *private_key,
6fc6879b
JM		 3731 const char *private_key_passwd)
3732{
bd9b8b2b 3733 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 3734
3735 if (private_key == NULL)
3736 return 0;
3737
63942cf0
DB		 3738 if (tls_use_private_key_file(data, NULL, private_key,
3739 private_key_passwd) &&
149143e3 3740 tls_read_pkcs12(data, NULL, private_key, private_key_passwd)) {
6fc6879b
JM		 3741 tls_show_errors(MSG_INFO, __func__,
3742 "Failed to load private key");
6fc6879b
JM		 3743 ERR_clear_error();
3744 return -1;
3745 }
6fc6879b 3746 ERR_clear_error();
55651a4b 3747
6fc6879b
JM		 3748 if (!SSL_CTX_check_private_key(ssl_ctx)) {
3749 tls_show_errors(MSG_INFO, __func__,
3750 "Private key failed verification");
3751 return -1;
3752 }
3753
3754 return 0;
3755}
3756
3757
3758static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
3759{
3760#ifdef OPENSSL_NO_DH
3761 if (dh_file == NULL)
3762 return 0;
3763 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
3764 "dh_file specified");
3765 return -1;
3766#else /* OPENSSL_NO_DH */
3767 DH *dh;
3768 BIO *bio;
3769
3770 /* TODO: add support for dh_blob */
3771 if (dh_file == NULL)
3772 return 0;
3773 if (conn == NULL)
3774 return -1;
3775
3776 bio = BIO_new_file(dh_file, "r");
3777 if (bio == NULL) {
3778 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
3779 dh_file, ERR_error_string(ERR_get_error(), NULL));
3780 return -1;
3781 }
3782 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
3783 BIO_free(bio);
3784#ifndef OPENSSL_NO_DSA
3785 while (dh == NULL) {
3786 DSA *dsa;
3787 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
3788 " trying to parse as DSA params", dh_file,
3789 ERR_error_string(ERR_get_error(), NULL));
3790 bio = BIO_new_file(dh_file, "r");
3791 if (bio == NULL)
3792 break;
3793 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
3794 BIO_free(bio);
3795 if (!dsa) {
3796 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
3797 "'%s': %s", dh_file,
3798 ERR_error_string(ERR_get_error(), NULL));
3799 break;
3800 }
3801
3802 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
3803 dh = DSA_dup_DH(dsa);
3804 DSA_free(dsa);
3805 if (dh == NULL) {
3806 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
3807 "params into DH params");
3808 break;
3809 }
3810 break;
3811 }
3812#endif /* !OPENSSL_NO_DSA */
3813 if (dh == NULL) {
3814 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
3815 "'%s'", dh_file);
3816 return -1;
3817 }
3818
3819 if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
3820 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
3821 "%s", dh_file,
3822 ERR_error_string(ERR_get_error(), NULL));
3823 DH_free(dh);
3824 return -1;
3825 }
3826 DH_free(dh);
3827 return 0;
3828#endif /* OPENSSL_NO_DH */
3829}
3830
3831
bd9b8b2b 3832static int tls_global_dh(struct tls_data *data, const char *dh_file)
6fc6879b
JM		 3833{
3834#ifdef OPENSSL_NO_DH
3835 if (dh_file == NULL)
3836 return 0;
3837 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
3838 "dh_file specified");
3839 return -1;
3840#else /* OPENSSL_NO_DH */
bd9b8b2b 3841 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 3842 DH *dh;
3843 BIO *bio;
3844
3845 /* TODO: add support for dh_blob */
3846 if (dh_file == NULL)
3847 return 0;
3848 if (ssl_ctx == NULL)
3849 return -1;
3850
3851 bio = BIO_new_file(dh_file, "r");
3852 if (bio == NULL) {
3853 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
3854 dh_file, ERR_error_string(ERR_get_error(), NULL));
3855 return -1;
3856 }
3857 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
3858 BIO_free(bio);
3859#ifndef OPENSSL_NO_DSA
3860 while (dh == NULL) {
3861 DSA *dsa;
3862 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
3863 " trying to parse as DSA params", dh_file,
3864 ERR_error_string(ERR_get_error(), NULL));
3865 bio = BIO_new_file(dh_file, "r");
3866 if (bio == NULL)
3867 break;
3868 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
3869 BIO_free(bio);
3870 if (!dsa) {
3871 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
3872 "'%s': %s", dh_file,
3873 ERR_error_string(ERR_get_error(), NULL));
3874 break;
3875 }
3876
3877 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
3878 dh = DSA_dup_DH(dsa);
3879 DSA_free(dsa);
3880 if (dh == NULL) {
3881 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
3882 "params into DH params");
3883 break;
3884 }
3885 break;
3886 }
3887#endif /* !OPENSSL_NO_DSA */
3888 if (dh == NULL) {
3889 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
3890 "'%s'", dh_file);
3891 return -1;
3892 }
3893
3894 if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) {
3895 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
3896 "%s", dh_file,
3897 ERR_error_string(ERR_get_error(), NULL));
3898 DH_free(dh);
3899 return -1;
3900 }
3901 DH_free(dh);
3902 return 0;
3903#endif /* OPENSSL_NO_DH */
3904}
3905
3906
1046db8b
JM		 3907int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn,
3908 struct tls_random *keys)
6fc6879b
JM		 3909{
3910 SSL *ssl;
3911
3912 if (conn == NULL || keys == NULL)
3913 return -1;
3914 ssl = conn->ssl;
005c5dcf
JM		 3915 if (ssl == NULL)
3916 return -1;
3917
3918 os_memset(keys, 0, sizeof(*keys));
3919 keys->client_random = conn->client_random;
3920 keys->client_random_len = SSL_get_client_random(
3921 ssl, conn->client_random, sizeof(conn->client_random));
3922 keys->server_random = conn->server_random;
3923 keys->server_random_len = SSL_get_server_random(
3924 ssl, conn->server_random, sizeof(conn->server_random));
6fc6879b
JM		 3925
3926 return 0;
3927}
3928
3929
1cece2fa 3930#ifdef OPENSSL_NEED_EAP_FAST_PRF
af851914
JM		 3931static int openssl_get_keyblock_size(SSL *ssl)
3932{
ba3658cf
BS		 3933#if OPENSSL_VERSION_NUMBER < 0x10100000L || \
3934 (defined(LIBRESSL_VERSION_NUMBER) && \
3935 LIBRESSL_VERSION_NUMBER < 0x20700000L)
af851914
JM		 3936 const EVP_CIPHER *c;
3937 const EVP_MD *h;
3938 int md_size;
3939
3940 if (ssl->enc_read_ctx == NULL || ssl->enc_read_ctx->cipher == NULL ||
3941 ssl->read_hash == NULL)
3942 return -1;
3943
3944 c = ssl->enc_read_ctx->cipher;
af851914 3945 h = EVP_MD_CTX_md(ssl->read_hash);
af851914
JM		 3946 if (h)
3947 md_size = EVP_MD_size(h);
af851914
JM		 3948 else if (ssl->s3)
3949 md_size = ssl->s3->tmp.new_mac_secret_size;
af851914
JM		 3950 else
3951 return -1;
3952
3953 wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d "
3954 "IV_len=%d", EVP_CIPHER_key_length(c), md_size,
3955 EVP_CIPHER_iv_length(c));
3956 return 2 * (EVP_CIPHER_key_length(c) +
3957 md_size +
3958 EVP_CIPHER_iv_length(c));
3de28506
JM		 3959#else
3960 const SSL_CIPHER *ssl_cipher;
3961 int cipher, digest;
3962 const EVP_CIPHER *c;
3963 const EVP_MD *h;
3964
3965 ssl_cipher = SSL_get_current_cipher(ssl);
3966 if (!ssl_cipher)
3967 return -1;
3968 cipher = SSL_CIPHER_get_cipher_nid(ssl_cipher);
3969 digest = SSL_CIPHER_get_digest_nid(ssl_cipher);
3970 wpa_printf(MSG_DEBUG, "OpenSSL: cipher nid %d digest nid %d",
3971 cipher, digest);
3972 if (cipher < 0 || digest < 0)
3973 return -1;
3974 c = EVP_get_cipherbynid(cipher);
3975 h = EVP_get_digestbynid(digest);
3976 if (!c || !h)
3977 return -1;
3978
3979 wpa_printf(MSG_DEBUG,
3980 "OpenSSL: keyblock size: key_len=%d MD_size=%d IV_len=%d",
3981 EVP_CIPHER_key_length(c), EVP_MD_size(h),
3982 EVP_CIPHER_iv_length(c));
3983 return 2 * (EVP_CIPHER_key_length(c) + EVP_MD_size(h) +
3984 EVP_CIPHER_iv_length(c));
3985#endif
af851914 3986}
1cece2fa 3987#endif /* OPENSSL_NEED_EAP_FAST_PRF */
af851914
JM		 3988
3989
73581707 3990int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn,
a916ff5c
EO		 3991 const char *label, const u8 *context,
3992 size_t context_len, u8 *out, size_t out_len)
73581707
DB		 3993{
3994 if (!conn ||
3995 SSL_export_keying_material(conn->ssl, out, out_len, label,
a916ff5c
EO		 3996 os_strlen(label), context, context_len,
3997 context != NULL) != 1)
73581707
DB		 3998 return -1;
3999 return 0;
4000}
4001
4002
4003int tls_connection_get_eap_fast_key(void *tls_ctx, struct tls_connection *conn,
4004 u8 *out, size_t out_len)
fa0e7151 4005{
1cece2fa 4006#ifdef OPENSSL_NEED_EAP_FAST_PRF
3de28506
JM		 4007 SSL *ssl;
4008 SSL_SESSION *sess;
4009 u8 *rnd;
4010 int ret = -1;
4011 int skip = 0;
4012 u8 *tmp_out = NULL;
4013 u8 *_out = out;
4014 unsigned char client_random[SSL3_RANDOM_SIZE];
4015 unsigned char server_random[SSL3_RANDOM_SIZE];
4016 unsigned char master_key[64];
4017 size_t master_key_len;
16bc3b89 4018 const char *ver;
3de28506
JM		 4019
4020 /*
73581707
DB		 4021 * TLS library did not support EAP-FAST key generation, so get the
4022 * needed TLS session parameters and use an internal implementation of
4023 * TLS PRF to derive the key.
3de28506
JM		 4024 */
4025
4026 if (conn == NULL)
4027 return -1;
4028 ssl = conn->ssl;
4029 if (ssl == NULL)
4030 return -1;
16bc3b89 4031 ver = SSL_get_version(ssl);
3de28506 4032 sess = SSL_get_session(ssl);
16bc3b89 4033 if (!ver || !sess)
3de28506
JM		 4034 return -1;
4035
73581707
DB		 4036 skip = openssl_get_keyblock_size(ssl);
4037 if (skip < 0)
4038 return -1;
4039 tmp_out = os_malloc(skip + out_len);
4040 if (!tmp_out)
4041 return -1;
4042 _out = tmp_out;
3de28506
JM		 4043
4044 rnd = os_malloc(2 * SSL3_RANDOM_SIZE);
4045 if (!rnd) {
4046 os_free(tmp_out);
4047 return -1;
4048 }
4049
4050 SSL_get_client_random(ssl, client_random, sizeof(client_random));
4051 SSL_get_server_random(ssl, server_random, sizeof(server_random));
4052 master_key_len = SSL_SESSION_get_master_key(sess, master_key,
4053 sizeof(master_key));
4054
73581707
DB		 4055 os_memcpy(rnd, server_random, SSL3_RANDOM_SIZE);
4056 os_memcpy(rnd + SSL3_RANDOM_SIZE, client_random, SSL3_RANDOM_SIZE);
3de28506 4057
16bc3b89
JM		 4058 if (os_strcmp(ver, "TLSv1.2") == 0) {
4059 tls_prf_sha256(master_key, master_key_len,
73581707 4060 "key expansion", rnd, 2 * SSL3_RANDOM_SIZE,
16bc3b89 4061 _out, skip + out_len);
3de28506 4062 ret = 0;
16bc3b89 4063 } else if (tls_prf_sha1_md5(master_key, master_key_len,
73581707 4064 "key expansion", rnd, 2 * SSL3_RANDOM_SIZE,
16bc3b89
JM		 4065 _out, skip + out_len) == 0) {
4066 ret = 0;
4067 }
31bc66e4 4068 forced_memzero(master_key, sizeof(master_key));
3de28506 4069 os_free(rnd);
73581707 4070 if (ret == 0)
3de28506
JM		 4071 os_memcpy(out, _out + skip, out_len);
4072 bin_clear_free(tmp_out, skip);
4073
4074 return ret;
1cece2fa
DB		 4075#else /* OPENSSL_NEED_EAP_FAST_PRF */
4076 wpa_printf(MSG_ERROR,
4077 "OpenSSL: EAP-FAST keys cannot be exported in FIPS mode");
4078 return -1;
4079#endif /* OPENSSL_NEED_EAP_FAST_PRF */
fa0e7151
JM		 4080}
4081
4082
81c85c06 4083static struct wpabuf *
53b34578 4084openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data)
6fc6879b
JM		 4085{
4086 int res;
81c85c06 4087 struct wpabuf *out_data;
6fc6879b
JM		 4088
4089 /*
4090 * Give TLS handshake data from the server (if available) to OpenSSL
4091 * for processing.
4092 */
e9690eb7 4093 if (in_data && wpabuf_len(in_data) > 0 &&
81c85c06
JM		 4094 BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data))
4095 < 0) {
6fc6879b
JM		 4096 tls_show_errors(MSG_INFO, __func__,
4097 "Handshake failed - BIO_write");
4098 return NULL;
4099 }
4100
4101 /* Initiate TLS handshake or continue the existing handshake */
53b34578 4102 if (conn->server)
81c85c06
JM		 4103 res = SSL_accept(conn->ssl);
4104 else
4105 res = SSL_connect(conn->ssl);
6fc6879b
JM		 4106 if (res != 1) {
4107 int err = SSL_get_error(conn->ssl, res);
4108 if (err == SSL_ERROR_WANT_READ)
4109 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
4110 "more data");
4111 else if (err == SSL_ERROR_WANT_WRITE)
4112 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
4113 "write");
4114 else {
4115 tls_show_errors(MSG_INFO, __func__, "SSL_connect");
4116 conn->failed++;
53b34578 4117 if (!conn->server && !conn->client_hello_generated) {
4a576c47
JM		 4118 /* The server would not understand TLS Alert
4119 * before ClientHello, so simply terminate
4120 * handshake on this type of error case caused
4121 * by a likely internal error like no ciphers
4122 * available. */
4123 wpa_printf(MSG_DEBUG,
4124 "OpenSSL: Could not generate ClientHello");
4125 conn->write_alerts++;
4126 return NULL;
4127 }
6fc6879b
JM		 4128 }
4129 }
4130
53b34578 4131 if (!conn->server && !conn->failed)
4a576c47
JM		 4132 conn->client_hello_generated = 1;
4133
1c9663cf 4134#ifdef CONFIG_SUITEB
53b34578 4135 if ((conn->flags & TLS_CONN_SUITEB) && !conn->server &&
1c9663cf
JM		 4136 os_strncmp(SSL_get_cipher(conn->ssl), "DHE-", 4) == 0 &&
4137 conn->server_dh_prime_len < 3072) {
4138 struct tls_context *context = conn->context;
4139
4140 /*
4141 * This should not be reached since earlier cert_cb should have
4142 * terminated the handshake. Keep this check here for extra
4143 * protection if anything goes wrong with the more low-level
4144 * checks based on having to parse the TLS handshake messages.
4145 */
4146 wpa_printf(MSG_DEBUG,
4147 "OpenSSL: Server DH prime length: %d bits",
4148 conn->server_dh_prime_len);
4149
4150 if (context->event_cb) {
4151 union tls_event_data ev;
4152
4153 os_memset(&ev, 0, sizeof(ev));
4154 ev.alert.is_local = 1;
4155 ev.alert.type = "fatal";
4156 ev.alert.description = "insufficient security";
4157 context->event_cb(context->cb_ctx, TLS_ALERT, &ev);
4158 }
4159 /*
4160 * Could send a TLS Alert to the server, but for now, simply
4161 * terminate handshake.
4162 */
4163 conn->failed++;
4164 conn->write_alerts++;
4165 return NULL;
4166 }
4167#endif /* CONFIG_SUITEB */
4168
6fc6879b
JM		 4169 /* Get the TLS handshake data to be sent to the server */
4170 res = BIO_ctrl_pending(conn->ssl_out);
4171 wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
81c85c06 4172 out_data = wpabuf_alloc(res);
6fc6879b
JM		 4173 if (out_data == NULL) {
4174 wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
4175 "handshake output (%d bytes)", res);
4176 if (BIO_reset(conn->ssl_out) < 0) {
4177 tls_show_errors(MSG_INFO, __func__,
4178 "BIO_reset failed");
4179 }
6fc6879b
JM		 4180 return NULL;
4181 }
81c85c06
JM		 4182 res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data),
4183 res);
6fc6879b
JM		 4184 if (res < 0) {
4185 tls_show_errors(MSG_INFO, __func__,
4186 "Handshake failed - BIO_read");
4187 if (BIO_reset(conn->ssl_out) < 0) {
4188 tls_show_errors(MSG_INFO, __func__,
4189 "BIO_reset failed");
4190 }
81c85c06 4191 wpabuf_free(out_data);
6fc6879b
JM		 4192 return NULL;
4193 }
81c85c06 4194 wpabuf_put(out_data, res);
6fc6879b
JM		 4195
4196 return out_data;
4197}
4198
4199
81c85c06
JM		 4200static struct wpabuf *
4201openssl_get_appl_data(struct tls_connection *conn, size_t max_len)
6fc6879b 4202{
81c85c06 4203 struct wpabuf *appl_data;
6fc6879b 4204 int res;
6fc6879b 4205
81c85c06
JM		 4206 appl_data = wpabuf_alloc(max_len + 100);
4207 if (appl_data == NULL)
6fc6879b 4208 return NULL;
6fc6879b 4209
81c85c06
JM		 4210 res = SSL_read(conn->ssl, wpabuf_mhead(appl_data),
4211 wpabuf_size(appl_data));
4212 if (res < 0) {
bf206cad 4213 int err = SSL_get_error(conn->ssl, res);
81c85c06
JM		 4214 if (err == SSL_ERROR_WANT_READ ||
4215 err == SSL_ERROR_WANT_WRITE) {
4216 wpa_printf(MSG_DEBUG, "SSL: No Application Data "
4217 "included");
4218 } else {
6fc6879b 4219 tls_show_errors(MSG_INFO, __func__,
81c85c06
JM		 4220 "Failed to read possible "
4221 "Application Data");
6fc6879b 4222 }
81c85c06 4223 wpabuf_free(appl_data);
6fc6879b
JM		 4224 return NULL;
4225 }
81c85c06
JM		 4226
4227 wpabuf_put(appl_data, res);
4228 wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished "
4229 "message", appl_data);
4230
4231 return appl_data;
4232}
4233
4234
4235static struct wpabuf *
4236openssl_connection_handshake(struct tls_connection *conn,
4237 const struct wpabuf *in_data,
53b34578 4238 struct wpabuf **appl_data)
81c85c06
JM		 4239{
4240 struct wpabuf *out_data;
4241
4242 if (appl_data)
4243 *appl_data = NULL;
4244
53b34578 4245 out_data = openssl_handshake(conn, in_data);
81c85c06 4246 if (out_data == NULL)
6fc6879b 4247 return NULL;
bb52293e
JM		 4248 if (conn->invalid_hb_used) {
4249 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
4250 wpabuf_free(out_data);
4251 return NULL;
4252 }
81c85c06 4253
a89beee5
JM		 4254 if (SSL_is_init_finished(conn->ssl)) {
4255 wpa_printf(MSG_DEBUG,
4256 "OpenSSL: Handshake finished - resumed=%d",
4257 tls_connection_resumed(conn->ssl_ctx, conn));
4258 if (appl_data && in_data)
4259 *appl_data = openssl_get_appl_data(conn,
4260 wpabuf_len(in_data));
4261 }
81c85c06 4262
bb52293e
JM		 4263 if (conn->invalid_hb_used) {
4264 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
4265 if (appl_data) {
4266 wpabuf_free(*appl_data);
4267 *appl_data = NULL;
4268 }
4269 wpabuf_free(out_data);
4270 return NULL;
4271 }
4272
6fc6879b
JM		 4273 return out_data;
4274}
4275
4276
81c85c06
JM		 4277struct wpabuf *
4278tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
4279 const struct wpabuf *in_data,
4280 struct wpabuf **appl_data)
4281{
53b34578 4282 return openssl_connection_handshake(conn, in_data, appl_data);
81c85c06
JM		 4283}
4284
4285
4286struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
4287 struct tls_connection *conn,
4288 const struct wpabuf *in_data,
4289 struct wpabuf **appl_data)
4290{
53b34578
JM		 4291 conn->server = 1;
4292 return openssl_connection_handshake(conn, in_data, appl_data);
81c85c06
JM		 4293}
4294
4295
4296struct wpabuf * tls_connection_encrypt(void *tls_ctx,
4297 struct tls_connection *conn,
4298 const struct wpabuf *in_data)
6fc6879b
JM		 4299{
4300 int res;
81c85c06 4301 struct wpabuf *buf;
6fc6879b
JM		 4302
4303 if (conn == NULL)
81c85c06 4304 return NULL;
6fc6879b
JM		 4305
4306 /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
4307 if ((res = BIO_reset(conn->ssl_in)) < 0 ||
4308 (res = BIO_reset(conn->ssl_out)) < 0) {
4309 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
81c85c06 4310 return NULL;
6fc6879b 4311 }
81c85c06 4312 res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data));
6fc6879b
JM		 4313 if (res < 0) {
4314 tls_show_errors(MSG_INFO, __func__,
4315 "Encryption failed - SSL_write");
81c85c06 4316 return NULL;
6fc6879b
JM		 4317 }
4318
4319 /* Read encrypted data to be sent to the server */
81c85c06
JM		 4320 buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
4321 if (buf == NULL)
4322 return NULL;
4323 res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf));
6fc6879b
JM		 4324 if (res < 0) {
4325 tls_show_errors(MSG_INFO, __func__,
4326 "Encryption failed - BIO_read");
81c85c06
JM		 4327 wpabuf_free(buf);
4328 return NULL;
6fc6879b 4329 }
81c85c06 4330 wpabuf_put(buf, res);
6fc6879b 4331
81c85c06 4332 return buf;
6fc6879b
JM		 4333}
4334
4335
81c85c06
JM		 4336struct wpabuf * tls_connection_decrypt(void *tls_ctx,
4337 struct tls_connection *conn,
4338 const struct wpabuf *in_data)
6fc6879b
JM		 4339{
4340 int res;
81c85c06 4341 struct wpabuf *buf;
6fc6879b
JM		 4342
4343 /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
81c85c06
JM		 4344 res = BIO_write(conn->ssl_in, wpabuf_head(in_data),
4345 wpabuf_len(in_data));
6fc6879b
JM		 4346 if (res < 0) {
4347 tls_show_errors(MSG_INFO, __func__,
4348 "Decryption failed - BIO_write");
81c85c06 4349 return NULL;
6fc6879b
JM		 4350 }
4351 if (BIO_reset(conn->ssl_out) < 0) {
4352 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
81c85c06 4353 return NULL;
6fc6879b
JM		 4354 }
4355
4356 /* Read decrypted data for further processing */
81c85c06
JM		 4357 /*
4358 * Even though we try to disable TLS compression, it is possible that
4359 * this cannot be done with all TLS libraries. Add extra buffer space
4360 * to handle the possibility of the decrypted data being longer than
4361 * input data.
4362 */
4363 buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
4364 if (buf == NULL)
4365 return NULL;
4366 res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
6fc6879b
JM		 4367 if (res < 0) {
4368 tls_show_errors(MSG_INFO, __func__,
4369 "Decryption failed - SSL_read");
a86a7316 4370 wpabuf_free(buf);
81c85c06 4371 return NULL;
6fc6879b 4372 }
81c85c06 4373 wpabuf_put(buf, res);
6fc6879b 4374
bb52293e
JM		 4375 if (conn->invalid_hb_used) {
4376 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
4377 wpabuf_free(buf);
4378 return NULL;
4379 }
4380
81c85c06 4381 return buf;
6fc6879b
JM		 4382}
4383
4384
4385int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
4386{
373c7969 4387 return conn ? SSL_session_reused(conn->ssl) : 0;
6fc6879b
JM		 4388}
4389
4390
4391int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
4392 u8 *ciphers)
4393{
750f5d99 4394 char buf[500], *pos, *end;
6fc6879b
JM		 4395 u8 *c;
4396 int ret;
4397
4398 if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
4399 return -1;
4400
4401 buf[0] = '\0';
4402 pos = buf;
4403 end = pos + sizeof(buf);
4404
4405 c = ciphers;
4406 while (*c != TLS_CIPHER_NONE) {
4407 const char *suite;
4408
4409 switch (*c) {
4410 case TLS_CIPHER_RC4_SHA:
4411 suite = "RC4-SHA";
4412 break;
4413 case TLS_CIPHER_AES128_SHA:
4414 suite = "AES128-SHA";
4415 break;
4416 case TLS_CIPHER_RSA_DHE_AES128_SHA:
4417 suite = "DHE-RSA-AES128-SHA";
4418 break;
4419 case TLS_CIPHER_ANON_DH_AES128_SHA:
4420 suite = "ADH-AES128-SHA";
4421 break;
750f5d99
JM		 4422 case TLS_CIPHER_RSA_DHE_AES256_SHA:
4423 suite = "DHE-RSA-AES256-SHA";
4424 break;
4425 case TLS_CIPHER_AES256_SHA:
4426 suite = "AES256-SHA";
4427 break;
6fc6879b
JM		 4428 default:
4429 wpa_printf(MSG_DEBUG, "TLS: Unsupported "
4430 "cipher selection: %d", *c);
4431 return -1;
4432 }
4433 ret = os_snprintf(pos, end - pos, ":%s", suite);
d85e1fc8 4434 if (os_snprintf_error(end - pos, ret))
6fc6879b
JM		 4435 break;
4436 pos += ret;
4437
4438 c++;
4439 }
063d28ec
JM		 4440 if (!buf[0]) {
4441 wpa_printf(MSG_DEBUG, "OpenSSL: No ciphers listed");
4442 return -1;
4443 }
6fc6879b
JM		 4444
4445 wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
4446
36e82060 4447#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
c34cd668
JM		 4448#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
4449 if (os_strstr(buf, ":ADH-")) {
4450 /*
4451 * Need to drop to security level 0 to allow anonymous
4452 * cipher suites for EAP-FAST.
4453 */
4454 SSL_set_security_level(conn->ssl, 0);
4455 } else if (SSL_get_security_level(conn->ssl) == 0) {
4456 /* Force at least security level 1 */
4457 SSL_set_security_level(conn->ssl, 1);
4458 }
4459#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4460#endif
4461
6fc6879b
JM		 4462 if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
4463 tls_show_errors(MSG_INFO, __func__,
4464 "Cipher suite configuration failed");
4465 return -1;
4466 }
4467
4468 return 0;
4469}
4470
4471
fe1bf329
JM		 4472int tls_get_version(void *ssl_ctx, struct tls_connection *conn,
4473 char *buf, size_t buflen)
4474{
4475 const char *name;
4476 if (conn == NULL || conn->ssl == NULL)
4477 return -1;
4478
4479 name = SSL_get_version(conn->ssl);
4480 if (name == NULL)
4481 return -1;
4482
4483 os_strlcpy(buf, name, buflen);
4484 return 0;
4485}
4486
4487
6fc6879b
JM		 4488int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
4489 char *buf, size_t buflen)
4490{
4491 const char *name;
4492 if (conn == NULL || conn->ssl == NULL)
4493 return -1;
4494
4495 name = SSL_get_cipher(conn->ssl);
4496 if (name == NULL)
4497 return -1;
4498
4499 os_strlcpy(buf, name, buflen);
4500 return 0;
4501}
4502
4503
4504int tls_connection_enable_workaround(void *ssl_ctx,
4505 struct tls_connection *conn)
4506{
4507 SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
4508
4509 return 0;
4510}
4511
4512
1e5839e0 4513#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
6fc6879b
JM		 4514/* ClientHello TLS extensions require a patch to openssl, so this function is
4515 * commented out unless explicitly needed for EAP-FAST in order to be able to
4516 * build this file with unmodified openssl. */
4517int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
4518 int ext_type, const u8 *data,
4519 size_t data_len)
4520{
0cf03892 4521 if (conn == NULL || conn->ssl == NULL || ext_type != 35)
6fc6879b
JM		 4522 return -1;
4523
0cf03892
JM		 4524 if (SSL_set_session_ticket_ext(conn->ssl, (void *) data,
4525 data_len) != 1)
4526 return -1;
6fc6879b
JM		 4527
4528 return 0;
4529}
1e5839e0 4530#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b
JM		 4531
4532
4533int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
4534{
4535 if (conn == NULL)
4536 return -1;
4537 return conn->failed;
4538}
4539
4540
4541int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
4542{
4543 if (conn == NULL)
4544 return -1;
4545 return conn->read_alerts;
4546}
4547
4548
4549int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
4550{
4551 if (conn == NULL)
4552 return -1;
4553 return conn->write_alerts;
4554}
4555
4556
080585c0
JM		 4557#ifdef HAVE_OCSP
4558
4559static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp)
4560{
4561#ifndef CONFIG_NO_STDOUT_DEBUG
080585c0
JM		 4562 BIO *out;
4563 size_t rlen;
4564 char *txt;
4565 int res;
4566
4567 if (wpa_debug_level > MSG_DEBUG)
4568 return;
4569
4570 out = BIO_new(BIO_s_mem());
4571 if (!out)
4572 return;
4573
4574 OCSP_RESPONSE_print(out, rsp, 0);
4575 rlen = BIO_ctrl_pending(out);
4576 txt = os_malloc(rlen + 1);
4577 if (!txt) {
4578 BIO_free(out);
4579 return;
4580 }
4581
4582 res = BIO_read(out, txt, rlen);
4583 if (res > 0) {
4584 txt[res] = '\0';
4585 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt);
4586 }
4587 os_free(txt);
4588 BIO_free(out);
4589#endif /* CONFIG_NO_STDOUT_DEBUG */
4590}
4591
4592
4eb3b76b
JM		 4593static void debug_print_cert(X509 *cert, const char *title)
4594{
4595#ifndef CONFIG_NO_STDOUT_DEBUG
4596 BIO *out;
4597 size_t rlen;
4598 char *txt;
4599 int res;
4600
4601 if (wpa_debug_level > MSG_DEBUG)
4602 return;
4603
4604 out = BIO_new(BIO_s_mem());
4605 if (!out)
4606 return;
4607
4608 X509_print(out, cert);
4609 rlen = BIO_ctrl_pending(out);
4610 txt = os_malloc(rlen + 1);
4611 if (!txt) {
4612 BIO_free(out);
4613 return;
4614 }
4615
4616 res = BIO_read(out, txt, rlen);
4617 if (res > 0) {
4618 txt[res] = '\0';
4619 wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt);
4620 }
4621 os_free(txt);
4622
4623 BIO_free(out);
4624#endif /* CONFIG_NO_STDOUT_DEBUG */
4625}
4626
4627
080585c0
JM		 4628static int ocsp_resp_cb(SSL *s, void *arg)
4629{
4630 struct tls_connection *conn = arg;
4631 const unsigned char *p;
85cff4b0 4632 int len, status, reason, res;
080585c0
JM		 4633 OCSP_RESPONSE *rsp;
4634 OCSP_BASICRESP *basic;
4635 OCSP_CERTID *id;
4636 ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update;
6bf61fb2
JM		 4637 X509_STORE *store;
4638 STACK_OF(X509) *certs = NULL;
080585c0
JM		 4639
4640 len = SSL_get_tlsext_status_ocsp_resp(s, &p);
4641 if (!p) {
4642 wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received");
4643 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
4644 }
4645
4646 wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len);
4647
4648 rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
4649 if (!rsp) {
4650 wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response");
4651 return 0;
4652 }
4653
4654 ocsp_debug_print_resp(rsp);
4655
4656 status = OCSP_response_status(rsp);
4657 if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
4658 wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)",
4659 status, OCSP_response_status_str(status));
4660 return 0;
4661 }
4662
4663 basic = OCSP_response_get1_basic(rsp);
4664 if (!basic) {
4665 wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse");
4666 return 0;
4667 }
4668
68ae4773 4669 store = SSL_CTX_get_cert_store(conn->ssl_ctx);
6bf61fb2 4670 if (conn->peer_issuer) {
4eb3b76b 4671 debug_print_cert(conn->peer_issuer, "Add OCSP issuer");
6bf61fb2
JM		 4672
4673 if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) {
4674 tls_show_errors(MSG_INFO, __func__,
58d405fc 4675 "OpenSSL: Could not add issuer to certificate store");
6bf61fb2
JM		 4676 }
4677 certs = sk_X509_new_null();
4678 if (certs) {
4679 X509 *cert;
4680 cert = X509_dup(conn->peer_issuer);
4681 if (cert && !sk_X509_push(certs, cert)) {
4682 tls_show_errors(
4683 MSG_INFO, __func__,
58d405fc 4684 "OpenSSL: Could not add issuer to OCSP responder trust store");
6bf61fb2
JM		 4685 X509_free(cert);
4686 sk_X509_free(certs);
4687 certs = NULL;
4688 }
710dfb4e 4689 if (certs && conn->peer_issuer_issuer) {
6bf61fb2
JM		 4690 cert = X509_dup(conn->peer_issuer_issuer);
4691 if (cert && !sk_X509_push(certs, cert)) {
4692 tls_show_errors(
4693 MSG_INFO, __func__,
58d405fc 4694 "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
6bf61fb2
JM		 4695 X509_free(cert);
4696 }
4697 }
4698 }
4699 }
4700
4701 status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER);
4702 sk_X509_pop_free(certs, X509_free);
080585c0
JM		 4703 if (status <= 0) {
4704 tls_show_errors(MSG_INFO, __func__,
4705 "OpenSSL: OCSP response failed verification");
4706 OCSP_BASICRESP_free(basic);
4707 OCSP_RESPONSE_free(rsp);
4708 return 0;
4709 }
4710
4711 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded");
4712
762c92a4
JM		 4713 if (!conn->peer_cert) {
4714 wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check");
4715 OCSP_BASICRESP_free(basic);
4716 OCSP_RESPONSE_free(rsp);
4717 return 0;
4718 }
4719
4720 if (!conn->peer_issuer) {
4721 wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check");
080585c0
JM		 4722 OCSP_BASICRESP_free(basic);
4723 OCSP_RESPONSE_free(rsp);
4724 return 0;
4725 }
4726
85cff4b0 4727 id = OCSP_cert_to_id(EVP_sha256(), conn->peer_cert, conn->peer_issuer);
080585c0 4728 if (!id) {
85cff4b0
JM		 4729 wpa_printf(MSG_DEBUG,
4730 "OpenSSL: Could not create OCSP certificate identifier (SHA256)");
080585c0
JM		 4731 OCSP_BASICRESP_free(basic);
4732 OCSP_RESPONSE_free(rsp);
4733 return 0;
4734 }
4735
85cff4b0
JM		 4736 res = OCSP_resp_find_status(basic, id, &status, &reason, &produced_at,
4737 &this_update, &next_update);
4738 if (!res) {
e3b39e62 4739 OCSP_CERTID_free(id);
85cff4b0
JM		 4740 id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer);
4741 if (!id) {
4742 wpa_printf(MSG_DEBUG,
4743 "OpenSSL: Could not create OCSP certificate identifier (SHA1)");
4744 OCSP_BASICRESP_free(basic);
4745 OCSP_RESPONSE_free(rsp);
4746 return 0;
4747 }
4748
4749 res = OCSP_resp_find_status(basic, id, &status, &reason,
4750 &produced_at, &this_update,
4751 &next_update);
4752 }
4753
4754 if (!res) {
080585c0
JM		 4755 wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s",
4756 (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" :
4757 " (OCSP not required)");
d9a0f697 4758 OCSP_CERTID_free(id);
080585c0
JM		 4759 OCSP_BASICRESP_free(basic);
4760 OCSP_RESPONSE_free(rsp);
4761 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
4762 }
d9a0f697 4763 OCSP_CERTID_free(id);
080585c0
JM		 4764
4765 if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) {
4766 tls_show_errors(MSG_INFO, __func__,
4767 "OpenSSL: OCSP status times invalid");
4768 OCSP_BASICRESP_free(basic);
4769 OCSP_RESPONSE_free(rsp);
4770 return 0;
4771 }
4772
4773 OCSP_BASICRESP_free(basic);
4774 OCSP_RESPONSE_free(rsp);
4775
4776 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s",
4777 OCSP_cert_status_str(status));
4778
4779 if (status == V_OCSP_CERTSTATUS_GOOD)
4780 return 1;
4781 if (status == V_OCSP_CERTSTATUS_REVOKED)
4782 return 0;
4783 if (conn->flags & TLS_CONN_REQUIRE_OCSP) {
4784 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required");
4785 return 0;
4786 }
be7963b3 4787 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue");
080585c0
JM		 4788 return 1;
4789}
4790
4791
4792static int ocsp_status_cb(SSL *s, void *arg)
4793{
4794 char *tmp;
4795 char *resp;
4796 size_t len;
4797
4798 if (tls_global->ocsp_stapling_response == NULL) {
4799 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured");
4800 return SSL_TLSEXT_ERR_OK;
4801 }
4802
4803 resp = os_readfile(tls_global->ocsp_stapling_response, &len);
4804 if (resp == NULL) {
4805 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file");
4806 /* TODO: Build OCSPResponse with responseStatus = internalError
4807 */
4808 return SSL_TLSEXT_ERR_OK;
4809 }
4810 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response");
4811 tmp = OPENSSL_malloc(len);
4812 if (tmp == NULL) {
4813 os_free(resp);
4814 return SSL_TLSEXT_ERR_ALERT_FATAL;
4815 }
4816
4817 os_memcpy(tmp, resp, len);
4818 os_free(resp);
4819 SSL_set_tlsext_status_ocsp_resp(s, tmp, len);
4820
4821 return SSL_TLSEXT_ERR_OK;
4822}
4823
4824#endif /* HAVE_OCSP */
4825
4826
6fc6879b
JM		 4827int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
4828 const struct tls_connection_params *params)
4829{
bd9b8b2b 4830 struct tls_data *data = tls_ctx;
6fc6879b
JM		 4831 int ret;
4832 unsigned long err;
96955192 4833 int can_pkcs11 = 0;
01b0d1d5
DW		 4834 const char *key_id = params->key_id;
4835 const char *cert_id = params->cert_id;
4836 const char *ca_cert_id = params->ca_cert_id;
96955192 4837 const char *engine_id = params->engine ? params->engine_id : NULL;
7a47f34b 4838 const char *ciphers;
6fc6879b
JM		 4839
4840 if (conn == NULL)
4841 return -1;
4842
d6b536f7
JM		 4843 if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) {
4844 wpa_printf(MSG_INFO,
4845 "OpenSSL: ocsp=3 not supported");
4846 return -1;
4847 }
4848
01b0d1d5 4849 /*
96955192
DW		 4850 * If the engine isn't explicitly configured, and any of the
4851 * cert/key fields are actually PKCS#11 URIs, then automatically
4852 * use the PKCS#11 ENGINE.
01b0d1d5 4853 */
96955192
DW		 4854 if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0)
4855 can_pkcs11 = 1;
4856
4857 if (!key_id && params->private_key && can_pkcs11 &&
4858 os_strncmp(params->private_key, "pkcs11:", 7) == 0) {
4859 can_pkcs11 = 2;
01b0d1d5 4860 key_id = params->private_key;
96955192 4861 }
01b0d1d5 4862
96955192
DW		 4863 if (!cert_id && params->client_cert && can_pkcs11 &&
4864 os_strncmp(params->client_cert, "pkcs11:", 7) == 0) {
4865 can_pkcs11 = 2;
01b0d1d5 4866 cert_id = params->client_cert;
96955192 4867 }
01b0d1d5 4868
96955192
DW		 4869 if (!ca_cert_id && params->ca_cert && can_pkcs11 &&
4870 os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) {
4871 can_pkcs11 = 2;
01b0d1d5 4872 ca_cert_id = params->ca_cert;
96955192
DW		 4873 }
4874
4875 /* If we need to automatically enable the PKCS#11 ENGINE, do so. */
4876 if (can_pkcs11 == 2 && !engine_id)
4877 engine_id = "pkcs11";
01b0d1d5 4878
0f56057c 4879#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
b70d508c 4880#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
6a31a31d
JM		 4881 if (params->flags & TLS_CONN_EAP_FAST) {
4882 wpa_printf(MSG_DEBUG,
4883 "OpenSSL: Use TLSv1_method() for EAP-FAST");
4884 if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) {
4885 tls_show_errors(MSG_INFO, __func__,
4886 "Failed to set TLSv1_method() for EAP-FAST");
4887 return -1;
4888 }
4889 }
06836013 4890#endif
b2e4074c 4891#if OPENSSL_VERSION_NUMBER >= 0x10101000L
dee566d9 4892#ifdef SSL_OP_NO_TLSv1_3
b2e4074c
JM		 4893 if (params->flags & TLS_CONN_EAP_FAST) {
4894 /* Need to disable TLS v1.3 at least for now since OpenSSL 1.1.1
4895 * refuses to start the handshake with the modified ciphersuite
4896 * list (no TLS v1.3 ciphersuites included) for EAP-FAST. */
4897 wpa_printf(MSG_DEBUG, "OpenSSL: Disable TLSv1.3 for EAP-FAST");
4898 SSL_set_options(conn->ssl, SSL_OP_NO_TLSv1_3);
4899 }
dee566d9 4900#endif /* SSL_OP_NO_TLSv1_3 */
b2e4074c 4901#endif
0f56057c 4902#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
d4913c58 4903
6fc6879b
JM		 4904 while ((err = ERR_get_error())) {
4905 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
4906 __func__, ERR_error_string(err, NULL));
4907 }
4908
96955192 4909 if (engine_id) {
e59c91af 4910 wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
96955192 4911 ret = tls_engine_init(conn, engine_id, params->pin,
01b0d1d5 4912 key_id, cert_id, ca_cert_id);
e59c91af
DS		 4913 if (ret)
4914 return ret;
4915 }
6fc6879b
JM		 4916 if (tls_connection_set_subject_match(conn,
4917 params->subject_match,
01f809c7 4918 params->altsubject_match,
cebee30f 4919 params->suffix_match,
841205a1
JB		 4920 params->domain_match,
4921 params->check_cert_subject))
6fc6879b 4922 return -1;
e59c91af 4923
96955192 4924 if (engine_id && ca_cert_id) {
bd9b8b2b 4925 if (tls_connection_engine_ca_cert(data, conn, ca_cert_id))
e59c91af 4926 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
bd9b8b2b 4927 } else if (tls_connection_ca_cert(data, conn, params->ca_cert,
e59c91af
DS		 4928 params->ca_cert_blob,
4929 params->ca_cert_blob_len,
4930 params->ca_path))
6fc6879b 4931 return -1;
e59c91af 4932
96955192 4933 if (engine_id && cert_id) {
01b0d1d5 4934 if (tls_connection_engine_client_cert(conn, cert_id))
e59c91af
DS		 4935 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
4936 } else if (tls_connection_client_cert(conn, params->client_cert,
4937 params->client_cert_blob,
4938 params->client_cert_blob_len))
6fc6879b
JM		 4939 return -1;
4940
96955192 4941 if (engine_id && key_id) {
e59c91af 4942 wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
6fc6879b
JM		 4943 if (tls_connection_engine_private_key(conn))
4944 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
bd9b8b2b 4945 } else if (tls_connection_private_key(data, conn,
6fc6879b
JM		 4946 params->private_key,
4947 params->private_key_passwd,
4948 params->private_key_blob,
4949 params->private_key_blob_len)) {
4950 wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
4951 params->private_key);
4952 return -1;
4953 }
4954
4955 if (tls_connection_dh(conn, params->dh_file)) {
4956 wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
4957 params->dh_file);
4958 return -1;
4959 }
4960
7a47f34b
JM		 4961 ciphers = params->openssl_ciphers;
4962#ifdef CONFIG_SUITEB
4963#ifdef OPENSSL_IS_BORINGSSL
4964 if (ciphers && os_strcmp(ciphers, "SUITEB192") == 0) {
4965 /* BoringSSL removed support for SUITEB192, so need to handle
4966 * this with hardcoded ciphersuite and additional checks for
4967 * other parameters. */
4968 ciphers = "ECDHE-ECDSA-AES256-GCM-SHA384";
4969 }
4970#endif /* OPENSSL_IS_BORINGSSL */
4971#endif /* CONFIG_SUITEB */
4972 if (ciphers && SSL_set_cipher_list(conn->ssl, ciphers) != 1) {
b7328434
JM		 4973 wpa_printf(MSG_INFO,
4974 "OpenSSL: Failed to set cipher string '%s'",
7a47f34b 4975 ciphers);
b7328434
JM		 4976 return -1;
4977 }
4978
0521c6eb
HV		 4979 if (!params->openssl_ecdh_curves) {
4980#ifndef OPENSSL_IS_BORINGSSL
4981#ifndef OPENSSL_NO_EC
4982#if (OPENSSL_VERSION_NUMBER >= 0x10002000L) && \
4983 (OPENSSL_VERSION_NUMBER < 0x10100000L)
4984 if (SSL_set_ecdh_auto(conn->ssl, 1) != 1) {
4985 wpa_printf(MSG_INFO,
4986 "OpenSSL: Failed to set ECDH curves to auto");
4987 return -1;
4988 }
4989#endif /* >= 1.0.2 && < 1.1.0 */
4990#endif /* OPENSSL_NO_EC */
4991#endif /* OPENSSL_IS_BORINGSSL */
4992 } else if (params->openssl_ecdh_curves[0]) {
4993#if defined(OPENSSL_IS_BORINGSSL) || (OPENSSL_VERSION_NUMBER < 0x10002000L)
4994 wpa_printf(MSG_INFO,
4995 "OpenSSL: ECDH configuration nnot supported");
4996 return -1;
4997#else /* OPENSSL_IS_BORINGSSL || < 1.0.2 */
4998#ifndef OPENSSL_NO_EC
4999 if (SSL_set1_curves_list(conn->ssl,
5000 params->openssl_ecdh_curves) != 1) {
5001 wpa_printf(MSG_INFO,
5002 "OpenSSL: Failed to set ECDH curves '%s'",
5003 params->openssl_ecdh_curves);
5004 return -1;
5005 }
5006#else /* OPENSSL_NO_EC */
5007 wpa_printf(MSG_INFO, "OpenSSL: ECDH not supported");
5008 return -1;
5009#endif /* OPENSSL_NO_EC */
5010#endif /* OPENSSL_IS_BORINGSSL */
5011 }
5012
a2c442be
JM		 5013 if (tls_set_conn_flags(conn, params->flags,
5014 params->openssl_ciphers) < 0)
60ed2f24 5015 return -1;
e9a6f183 5016
bdee6ca0
JM		 5017#ifdef OPENSSL_IS_BORINGSSL
5018 if (params->flags & TLS_CONN_REQUEST_OCSP) {
5019 SSL_enable_ocsp_stapling(conn->ssl);
5020 }
5021#else /* OPENSSL_IS_BORINGSSL */
080585c0
JM		 5022#ifdef HAVE_OCSP
5023 if (params->flags & TLS_CONN_REQUEST_OCSP) {
bd9b8b2b 5024 SSL_CTX *ssl_ctx = data->ssl;
080585c0
JM		 5025 SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp);
5026 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb);
5027 SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn);
5028 }
355a5c8e
JM		 5029#else /* HAVE_OCSP */
5030 if (params->flags & TLS_CONN_REQUIRE_OCSP) {
5031 wpa_printf(MSG_INFO,
5032 "OpenSSL: No OCSP support included - reject configuration");
5033 return -1;
5034 }
5035 if (params->flags & TLS_CONN_REQUEST_OCSP) {
5036 wpa_printf(MSG_DEBUG,
5037 "OpenSSL: No OCSP support included - allow optional OCSP case to continue");
5038 }
080585c0 5039#endif /* HAVE_OCSP */
bdee6ca0 5040#endif /* OPENSSL_IS_BORINGSSL */
080585c0 5041
235279e7
JM		 5042 conn->flags = params->flags;
5043
bd9b8b2b 5044 tls_get_errors(data);
6fc6879b
JM		 5045
5046 return 0;
5047}
5048
5049
5050int tls_global_set_params(void *tls_ctx,
5051 const struct tls_connection_params *params)
5052{
bd9b8b2b
JM		 5053 struct tls_data *data = tls_ctx;
5054 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 5055 unsigned long err;
5056
5057 while ((err = ERR_get_error())) {
5058 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
5059 __func__, ERR_error_string(err, NULL));
5060 }
5061
841205a1
JB		 5062 os_free(data->check_cert_subject);
5063 data->check_cert_subject = NULL;
5064 if (params->check_cert_subject) {
5065 data->check_cert_subject =
5066 os_strdup(params->check_cert_subject);
5067 if (!data->check_cert_subject)
5068 return -1;
5069 }
5070
bd9b8b2b
JM		 5071 if (tls_global_ca_cert(data, params->ca_cert) ||
5072 tls_global_client_cert(data, params->client_cert) ||
5073 tls_global_private_key(data, params->private_key,
f24b9797 5074 params->private_key_passwd) ||
bd9b8b2b 5075 tls_global_dh(data, params->dh_file)) {
f24b9797 5076 wpa_printf(MSG_INFO, "TLS: Failed to set global parameters");
6fc6879b
JM		 5077 return -1;
5078 }
5079
b7328434
JM		 5080 if (params->openssl_ciphers &&
5081 SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) {
5082 wpa_printf(MSG_INFO,
5083 "OpenSSL: Failed to set cipher string '%s'",
5084 params->openssl_ciphers);
5085 return -1;
5086 }
5087
0521c6eb
HV		 5088 if (!params->openssl_ecdh_curves) {
5089#ifndef OPENSSL_IS_BORINGSSL
5090#ifndef OPENSSL_NO_EC
5091#if (OPENSSL_VERSION_NUMBER >= 0x10002000L) && \
5092 (OPENSSL_VERSION_NUMBER < 0x10100000L)
5093 if (SSL_CTX_set_ecdh_auto(ssl_ctx, 1) != 1) {
5094 wpa_printf(MSG_INFO,
5095 "OpenSSL: Failed to set ECDH curves to auto");
5096 return -1;
5097 }
5098#endif /* >= 1.0.2 && < 1.1.0 */
5099#endif /* OPENSSL_NO_EC */
5100#endif /* OPENSSL_IS_BORINGSSL */
5101 } else if (params->openssl_ecdh_curves[0]) {
5102#if defined(OPENSSL_IS_BORINGSSL) || (OPENSSL_VERSION_NUMBER < 0x10002000L)
5103 wpa_printf(MSG_INFO,
5104 "OpenSSL: ECDH configuration nnot supported");
5105 return -1;
5106#else /* OPENSSL_IS_BORINGSSL || < 1.0.2 */
5107#ifndef OPENSSL_NO_EC
6570949b
JM		 5108#if OPENSSL_VERSION_NUMBER < 0x10100000L
5109 SSL_CTX_set_ecdh_auto(ssl_ctx, 1);
5110#endif
0521c6eb
HV		 5111 if (SSL_CTX_set1_curves_list(ssl_ctx,
5112 params->openssl_ecdh_curves) !=
5113 1) {
5114 wpa_printf(MSG_INFO,
5115 "OpenSSL: Failed to set ECDH curves '%s'",
5116 params->openssl_ecdh_curves);
5117 return -1;
5118 }
5119#else /* OPENSSL_NO_EC */
5120 wpa_printf(MSG_INFO, "OpenSSL: ECDH not supported");
5121 return -1;
5122#endif /* OPENSSL_NO_EC */
5123#endif /* OPENSSL_IS_BORINGSSL */
5124 }
5125
e866f39f
JM		 5126#ifdef SSL_OP_NO_TICKET
5127 if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
5128 SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET);
5129 else
5130 SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET);
5131#endif /* SSL_OP_NO_TICKET */
5132
080585c0
JM		 5133#ifdef HAVE_OCSP
5134 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb);
5135 SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx);
5136 os_free(tls_global->ocsp_stapling_response);
5137 if (params->ocsp_stapling_response)
5138 tls_global->ocsp_stapling_response =
5139 os_strdup(params->ocsp_stapling_response);
5140 else
5141 tls_global->ocsp_stapling_response = NULL;
5142#endif /* HAVE_OCSP */
5143
6fc6879b
JM		 5144 return 0;
5145}
5146
5147
1e5839e0 5148#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
6fc6879b
JM		 5149/* Pre-shared secred requires a patch to openssl, so this function is
5150 * commented out unless explicitly needed for EAP-FAST in order to be able to
5151 * build this file with unmodified openssl. */
5152
587b0457 5153#if (defined(OPENSSL_IS_BORINGSSL) || OPENSSL_VERSION_NUMBER >= 0x10100000L) && !defined(LIBRESSL_VERSION_NUMBER)
a8572960
AL		 5154static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
5155 STACK_OF(SSL_CIPHER) *peer_ciphers,
5156 const SSL_CIPHER **cipher, void *arg)
5157#else /* OPENSSL_IS_BORINGSSL */
6fc6879b
JM		 5158static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
5159 STACK_OF(SSL_CIPHER) *peer_ciphers,
5160 SSL_CIPHER **cipher, void *arg)
a8572960 5161#endif /* OPENSSL_IS_BORINGSSL */
6fc6879b
JM		 5162{
5163 struct tls_connection *conn = arg;
5164 int ret;
5165
ba3658cf
BS		 5166#if OPENSSL_VERSION_NUMBER < 0x10100000L || \
5167 (defined(LIBRESSL_VERSION_NUMBER) && \
5168 LIBRESSL_VERSION_NUMBER < 0x20700000L)
6fc6879b
JM		 5169 if (conn == NULL || conn->session_ticket_cb == NULL)
5170 return 0;
5171
5172 ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
5173 conn->session_ticket,
5174 conn->session_ticket_len,
5175 s->s3->client_random,
5176 s->s3->server_random, secret);
4d2a1b4f
JM		 5177#else
5178 unsigned char client_random[SSL3_RANDOM_SIZE];
5179 unsigned char server_random[SSL3_RANDOM_SIZE];
5180
5181 if (conn == NULL || conn->session_ticket_cb == NULL)
5182 return 0;
5183
5184 SSL_get_client_random(s, client_random, sizeof(client_random));
5185 SSL_get_server_random(s, server_random, sizeof(server_random));
5186
5187 ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
5188 conn->session_ticket,
5189 conn->session_ticket_len,
5190 client_random,
5191 server_random, secret);
5192#endif
5193
6fc6879b
JM		 5194 os_free(conn->session_ticket);
5195 conn->session_ticket = NULL;
5196
5197 if (ret <= 0)
5198 return 0;
5199
5200 *secret_len = SSL_MAX_MASTER_KEY_LENGTH;
5201 return 1;
5202}
5203
5204
0cf03892
JM		 5205static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data,
5206 int len, void *arg)
5207{
5208 struct tls_connection *conn = arg;
5209
5210 if (conn == NULL || conn->session_ticket_cb == NULL)
5211 return 0;
5212
5213 wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len);
5214
5215 os_free(conn->session_ticket);
5216 conn->session_ticket = NULL;
5217
5218 wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
5219 "extension", data, len);
5220
a1f11e34 5221 conn->session_ticket = os_memdup(data, len);
0cf03892
JM		 5222 if (conn->session_ticket == NULL)
5223 return 0;
5224
0cf03892
JM		 5225 conn->session_ticket_len = len;
5226
5227 return 1;
5228}
1e5839e0 5229#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b
JM		 5230
5231
5232int tls_connection_set_session_ticket_cb(void *tls_ctx,
5233 struct tls_connection *conn,
5234 tls_session_ticket_cb cb,
5235 void *ctx)
5236{
1e5839e0 5237#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
6fc6879b
JM		 5238 conn->session_ticket_cb = cb;
5239 conn->session_ticket_cb_ctx = ctx;
5240
5241 if (cb) {
5242 if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
5243 conn) != 1)
5244 return -1;
0cf03892
JM		 5245 SSL_set_session_ticket_ext_cb(conn->ssl,
5246 tls_session_ticket_ext_cb, conn);
6fc6879b
JM		 5247 } else {
5248 if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
5249 return -1;
0cf03892 5250 SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL);
6fc6879b
JM		 5251 }
5252
5253 return 0;
1e5839e0 5254#else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b 5255 return -1;
1e5839e0 5256#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b 5257}
a1651451
JM		 5258
5259
5260int tls_get_library_version(char *buf, size_t buf_len)
5261{
587b0457 5262#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
b34c623c
JM		 5263 return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
5264 OPENSSL_VERSION_TEXT,
5265 OpenSSL_version(OPENSSL_VERSION));
5266#else
a1651451
JM		 5267 return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
5268 OPENSSL_VERSION_TEXT,
5269 SSLeay_version(SSLEAY_VERSION));
b34c623c 5270#endif
a1651451 5271}
b3b8085a
JM		 5272
5273
5274void tls_connection_set_success_data(struct tls_connection *conn,
5275 struct wpabuf *data)
5276{
acf36f31
JM		 5277 SSL_SESSION *sess;
5278 struct wpabuf *old;
5279
5280 if (tls_ex_idx_session < 0)
5281 goto fail;
5282 sess = SSL_get_session(conn->ssl);
5283 if (!sess)
5284 goto fail;
5285 old = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
5286 if (old) {
5287 wpa_printf(MSG_DEBUG, "OpenSSL: Replacing old success data %p",
5288 old);
5289 wpabuf_free(old);
5290 }
5291 if (SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1)
5292 goto fail;
5293
5294 wpa_printf(MSG_DEBUG, "OpenSSL: Stored success data %p", data);
5295 conn->success_data = 1;
5296 return;
5297
5298fail:
5299 wpa_printf(MSG_INFO, "OpenSSL: Failed to store success data");
5300 wpabuf_free(data);
b3b8085a
JM		 5301}
5302
5303
5304void tls_connection_set_success_data_resumed(struct tls_connection *conn)
5305{
acf36f31
JM		 5306 wpa_printf(MSG_DEBUG,
5307 "OpenSSL: Success data accepted for resumed session");
5308 conn->success_data = 1;
b3b8085a
JM		 5309}
5310
5311
5312const struct wpabuf *
5313tls_connection_get_success_data(struct tls_connection *conn)
5314{
acf36f31
JM		 5315 SSL_SESSION *sess;
5316
5317 if (tls_ex_idx_session < 0 ||
5318 !(sess = SSL_get_session(conn->ssl)))
5319 return NULL;
5320 return SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
b3b8085a
JM		 5321}
5322
5323
5324void tls_connection_remove_session(struct tls_connection *conn)
5325{
acf36f31
JM		 5326 SSL_SESSION *sess;
5327
5328 sess = SSL_get_session(conn->ssl);
5329 if (!sess)
5330 return;
5331
5332 if (SSL_CTX_remove_session(conn->ssl_ctx, sess) != 1)
5333 wpa_printf(MSG_DEBUG,
5334 "OpenSSL: Session was not cached");
5335 else
5336 wpa_printf(MSG_DEBUG,
5337 "OpenSSL: Removed cached session to disable session resumption");
b3b8085a 5338}
3af37ece
JM		 5339
5340
5341int tls_get_tls_unique(struct tls_connection *conn, u8 *buf, size_t max_len)
5342{
5343 size_t len;
5344 int reused;
5345
5346 reused = SSL_session_reused(conn->ssl);
5347 if ((conn->server && !reused) || (!conn->server && reused))
5348 len = SSL_get_peer_finished(conn->ssl, buf, max_len);
5349 else
5350 len = SSL_get_finished(conn->ssl, buf, max_len);
5351
5352 if (len == 0 || len > max_len)
5353 return -1;
5354
5355 return len;
5356}
94714ec3
JM		 5357
5358
5359u16 tls_connection_get_cipher_suite(struct tls_connection *conn)
5360{
5361 const SSL_CIPHER *cipher;
5362
5363 cipher = SSL_get_current_cipher(conn->ssl);
5364 if (!cipher)
5365 return 0;
5366 return SSL_CIPHER_get_protocol_id(cipher);
5367}
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