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OpenSSL: Remove unnecessary os_strdup() from password callback
[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
DB		 61#if (OPENSSL_VERSION_NUMBER < 0x10100000L || \
62 defined(LIBRESSL_VERSION_NUMBER)) && \
63 !defined(BORINGSSL_API_VERSION)
dea20519
JM		 64/*
65 * SSL_get_client_random() and SSL_get_server_random() were added in OpenSSL
e4471338
DB		 66 * 1.1.0 and newer BoringSSL revisions. Provide compatibility wrappers for
67 * older versions.
dea20519
JM		 68 */
69
70static size_t SSL_get_client_random(const SSL *ssl, unsigned char *out,
71 size_t outlen)
72{
73 if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE)
74 return 0;
75 os_memcpy(out, ssl->s3->client_random, SSL3_RANDOM_SIZE);
76 return SSL3_RANDOM_SIZE;
77}
78
79
80static size_t SSL_get_server_random(const SSL *ssl, unsigned char *out,
81 size_t outlen)
82{
83 if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE)
84 return 0;
85 os_memcpy(out, ssl->s3->server_random, SSL3_RANDOM_SIZE);
86 return SSL3_RANDOM_SIZE;
87}
88
1ebb24bb 89
1cece2fa 90#ifdef OPENSSL_NEED_EAP_FAST_PRF
1ebb24bb
JM		 91static size_t SSL_SESSION_get_master_key(const SSL_SESSION *session,
92 unsigned char *out, size_t outlen)
93{
94 if (!session || session->master_key_length < 0 ||
95 (size_t) session->master_key_length > outlen)
96 return 0;
97 if ((size_t) session->master_key_length < outlen)
98 outlen = session->master_key_length;
99 os_memcpy(out, session->master_key, outlen);
100 return outlen;
101}
1cece2fa 102#endif /* OPENSSL_NEED_EAP_FAST_PRF */
1ebb24bb 103
dea20519
JM		 104#endif
105
3cfbd3b0 106#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(OPENSSL_IS_BORINGSSL)
4eb8cfe0
JM		 107#ifdef CONFIG_SUITEB
108static int RSA_bits(const RSA *r)
109{
110 return BN_num_bits(r->n);
111}
112#endif /* CONFIG_SUITEB */
113#endif
114
1d415f1f
KR		 115#ifdef ANDROID
116#include <openssl/pem.h>
117#include <keystore/keystore_get.h>
118
119static BIO * BIO_from_keystore(const char *key)
120{
121 BIO *bio = NULL;
122 uint8_t *value = NULL;
123 int length = keystore_get(key, strlen(key), &value);
124 if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL)
125 BIO_write(bio, value, length);
126 free(value);
127 return bio;
128}
a8ef133f
RX		 129
130
131static int tls_add_ca_from_keystore(X509_STORE *ctx, const char *key_alias)
132{
133 BIO *bio = BIO_from_keystore(key_alias);
134 STACK_OF(X509_INFO) *stack = NULL;
135 stack_index_t i;
136
137 if (bio) {
138 stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL);
139 BIO_free(bio);
140 }
141
142 if (!stack) {
143 wpa_printf(MSG_WARNING, "TLS: Failed to parse certificate: %s",
144 key_alias);
145 return -1;
146 }
147
148 for (i = 0; i < sk_X509_INFO_num(stack); ++i) {
149 X509_INFO *info = sk_X509_INFO_value(stack, i);
150
151 if (info->x509)
152 X509_STORE_add_cert(ctx, info->x509);
153 if (info->crl)
154 X509_STORE_add_crl(ctx, info->crl);
155 }
156
157 sk_X509_INFO_pop_free(stack, X509_INFO_free);
158
159 return 0;
160}
161
162
163static int tls_add_ca_from_keystore_encoded(X509_STORE *ctx,
164 const char *encoded_key_alias)
165{
166 int rc = -1;
167 int len = os_strlen(encoded_key_alias);
168 unsigned char *decoded_alias;
169
170 if (len & 1) {
171 wpa_printf(MSG_WARNING, "Invalid hex-encoded alias: %s",
172 encoded_key_alias);
173 return rc;
174 }
175
176 decoded_alias = os_malloc(len / 2 + 1);
177 if (decoded_alias) {
178 if (!hexstr2bin(encoded_key_alias, decoded_alias, len / 2)) {
179 decoded_alias[len / 2] = '\0';
180 rc = tls_add_ca_from_keystore(
181 ctx, (const char *) decoded_alias);
182 }
183 os_free(decoded_alias);
184 }
185
186 return rc;
187}
188
1d415f1f
KR		 189#endif /* ANDROID */
190
6fc6879b 191static int tls_openssl_ref_count = 0;
acf36f31 192static int tls_ex_idx_session = -1;
6fc6879b 193
7c0e1e27 194struct tls_context {
00468b46
JM		 195 void (*event_cb)(void *ctx, enum tls_event ev,
196 union tls_event_data *data);
197 void *cb_ctx;
1b414f59 198 int cert_in_cb;
080585c0 199 char *ocsp_stapling_response;
00468b46
JM		 200};
201
7c0e1e27 202static struct tls_context *tls_global = NULL;
00468b46
JM		 203
204
bd9b8b2b
JM		 205struct tls_data {
206 SSL_CTX *ssl;
acf36f31 207 unsigned int tls_session_lifetime;
bd9b8b2b
JM		 208};
209
6fc6879b 210struct tls_connection {
7c0e1e27 211 struct tls_context *context;
68ae4773 212 SSL_CTX *ssl_ctx;
6fc6879b
JM		 213 SSL *ssl;
214 BIO *ssl_in, *ssl_out;
aeeb0bca 215#if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
6fc6879b
JM		 216 ENGINE *engine; /* functional reference to the engine */
217 EVP_PKEY *private_key; /* the private key if using engine */
218#endif /* OPENSSL_NO_ENGINE */
cebee30f 219 char *subject_match, *altsubject_match, *suffix_match, *domain_match;
6fc6879b
JM		 220 int read_alerts, write_alerts, failed;
221
222 tls_session_ticket_cb session_ticket_cb;
223 void *session_ticket_cb_ctx;
224
225 /* SessionTicket received from OpenSSL hello_extension_cb (server) */
226 u8 *session_ticket;
227 size_t session_ticket_len;
00468b46 228
8d6399e4
JM		 229 unsigned int ca_cert_verify:1;
230 unsigned int cert_probe:1;
231 unsigned int server_cert_only:1;
bb52293e 232 unsigned int invalid_hb_used:1;
acf36f31 233 unsigned int success_data:1;
00468b46
JM		 234
235 u8 srv_cert_hash[32];
235279e7
JM		 236
237 unsigned int flags;
080585c0
JM		 238
239 X509 *peer_cert;
240 X509 *peer_issuer;
6bf61fb2 241 X509 *peer_issuer_issuer;
005c5dcf 242
005c5dcf
JM		 243 unsigned char client_random[SSL3_RANDOM_SIZE];
244 unsigned char server_random[SSL3_RANDOM_SIZE];
1c9663cf
JM		 245
246 u16 cipher_suite;
247 int server_dh_prime_len;
6fc6879b
JM		 248};
249
250
7c0e1e27
PS		 251static struct tls_context * tls_context_new(const struct tls_config *conf)
252{
253 struct tls_context *context = os_zalloc(sizeof(*context));
254 if (context == NULL)
255 return NULL;
256 if (conf) {
257 context->event_cb = conf->event_cb;
258 context->cb_ctx = conf->cb_ctx;
259 context->cert_in_cb = conf->cert_in_cb;
260 }
261 return context;
262}
263
264
6fc6879b
JM		 265#ifdef CONFIG_NO_STDOUT_DEBUG
266
267static void _tls_show_errors(void)
268{
269 unsigned long err;
270
271 while ((err = ERR_get_error())) {
272 /* Just ignore the errors, since stdout is disabled */
273 }
274}
275#define tls_show_errors(l, f, t) _tls_show_errors()
276
277#else /* CONFIG_NO_STDOUT_DEBUG */
278
279static void tls_show_errors(int level, const char *func, const char *txt)
280{
281 unsigned long err;
282
283 wpa_printf(level, "OpenSSL: %s - %s %s",
284 func, txt, ERR_error_string(ERR_get_error(), NULL));
285
286 while ((err = ERR_get_error())) {
287 wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
288 ERR_error_string(err, NULL));
289 }
290}
291
292#endif /* CONFIG_NO_STDOUT_DEBUG */
293
294
295#ifdef CONFIG_NATIVE_WINDOWS
296
297/* Windows CryptoAPI and access to certificate stores */
298#include <wincrypt.h>
299
300#ifdef __MINGW32_VERSION
301/*
302 * MinGW does not yet include all the needed definitions for CryptoAPI, so
303 * define here whatever extra is needed.
304 */
6fc6879b
JM		 305#define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
306#define CERT_STORE_READONLY_FLAG 0x00008000
307#define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
6fc6879b
JM		 308
309#endif /* __MINGW32_VERSION */
310
311
312struct cryptoapi_rsa_data {
313 const CERT_CONTEXT *cert;
314 HCRYPTPROV crypt_prov;
315 DWORD key_spec;
316 BOOL free_crypt_prov;
317};
318
319
320static void cryptoapi_error(const char *msg)
321{
322 wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
323 msg, (unsigned int) GetLastError());
324}
325
326
327static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
328 unsigned char *to, RSA *rsa, int padding)
329{
330 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
331 return 0;
332}
333
334
335static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
336 unsigned char *to, RSA *rsa, int padding)
337{
338 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
339 return 0;
340}
341
342
343static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
344 unsigned char *to, RSA *rsa, int padding)
345{
346 struct cryptoapi_rsa_data *priv =
347 (struct cryptoapi_rsa_data *) rsa->meth->app_data;
348 HCRYPTHASH hash;
349 DWORD hash_size, len, i;
350 unsigned char *buf = NULL;
351 int ret = 0;
352
353 if (priv == NULL) {
354 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
355 ERR_R_PASSED_NULL_PARAMETER);
356 return 0;
357 }
358
359 if (padding != RSA_PKCS1_PADDING) {
360 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
361 RSA_R_UNKNOWN_PADDING_TYPE);
362 return 0;
363 }
364
365 if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
366 wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
367 __func__);
368 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
369 RSA_R_INVALID_MESSAGE_LENGTH);
370 return 0;
371 }
372
373 if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
374 {
375 cryptoapi_error("CryptCreateHash failed");
376 return 0;
377 }
378
379 len = sizeof(hash_size);
380 if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
381 0)) {
382 cryptoapi_error("CryptGetHashParam failed");
383 goto err;
384 }
385
386 if ((int) hash_size != flen) {
387 wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
388 (unsigned) hash_size, flen);
389 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
390 RSA_R_INVALID_MESSAGE_LENGTH);
391 goto err;
392 }
393 if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
394 cryptoapi_error("CryptSetHashParam failed");
395 goto err;
396 }
397
398 len = RSA_size(rsa);
399 buf = os_malloc(len);
400 if (buf == NULL) {
401 RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
402 goto err;
403 }
404
405 if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
406 cryptoapi_error("CryptSignHash failed");
407 goto err;
408 }
409
410 for (i = 0; i < len; i++)
411 to[i] = buf[len - i - 1];
412 ret = len;
413
414err:
415 os_free(buf);
416 CryptDestroyHash(hash);
417
418 return ret;
419}
420
421
422static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
423 unsigned char *to, RSA *rsa, int padding)
424{
425 wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
426 return 0;
427}
428
429
430static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
431{
432 if (priv == NULL)
433 return;
434 if (priv->crypt_prov && priv->free_crypt_prov)
435 CryptReleaseContext(priv->crypt_prov, 0);
436 if (priv->cert)
437 CertFreeCertificateContext(priv->cert);
438 os_free(priv);
439}
440
441
442static int cryptoapi_finish(RSA *rsa)
443{
444 cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
445 os_free((void *) rsa->meth);
446 rsa->meth = NULL;
447 return 1;
448}
449
450
451static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
452{
453 HCERTSTORE cs;
454 const CERT_CONTEXT *ret = NULL;
455
456 cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
457 store | CERT_STORE_OPEN_EXISTING_FLAG |
458 CERT_STORE_READONLY_FLAG, L"MY");
459 if (cs == NULL) {
460 cryptoapi_error("Failed to open 'My system store'");
461 return NULL;
462 }
463
464 if (strncmp(name, "cert://", 7) == 0) {
465 unsigned short wbuf[255];
466 MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
467 ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
468 PKCS_7_ASN_ENCODING,
469 0, CERT_FIND_SUBJECT_STR,
470 wbuf, NULL);
471 } else if (strncmp(name, "hash://", 7) == 0) {
472 CRYPT_HASH_BLOB blob;
473 int len;
474 const char *hash = name + 7;
475 unsigned char *buf;
476
477 len = os_strlen(hash) / 2;
478 buf = os_malloc(len);
479 if (buf && hexstr2bin(hash, buf, len) == 0) {
480 blob.cbData = len;
481 blob.pbData = buf;
482 ret = CertFindCertificateInStore(cs,
483 X509_ASN_ENCODING |
484 PKCS_7_ASN_ENCODING,
485 0, CERT_FIND_HASH,
486 &blob, NULL);
487 }
488 os_free(buf);
489 }
490
491 CertCloseStore(cs, 0);
492
493 return ret;
494}
495
496
497static int tls_cryptoapi_cert(SSL *ssl, const char *name)
498{
499 X509 *cert = NULL;
500 RSA *rsa = NULL, *pub_rsa;
501 struct cryptoapi_rsa_data *priv;
502 RSA_METHOD *rsa_meth;
503
504 if (name == NULL ||
505 (strncmp(name, "cert://", 7) != 0 &&
506 strncmp(name, "hash://", 7) != 0))
507 return -1;
508
509 priv = os_zalloc(sizeof(*priv));
510 rsa_meth = os_zalloc(sizeof(*rsa_meth));
511 if (priv == NULL || rsa_meth == NULL) {
512 wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
513 "for CryptoAPI RSA method");
514 os_free(priv);
515 os_free(rsa_meth);
516 return -1;
517 }
518
519 priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
520 if (priv->cert == NULL) {
521 priv->cert = cryptoapi_find_cert(
522 name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
523 }
524 if (priv->cert == NULL) {
525 wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
526 "'%s'", name);
527 goto err;
528 }
529
fee31f76
JM		 530 cert = d2i_X509(NULL,
531 (const unsigned char **) &priv->cert->pbCertEncoded,
6fc6879b
JM		 532 priv->cert->cbCertEncoded);
533 if (cert == NULL) {
534 wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
535 "encoding");
536 goto err;
537 }
538
6fc6879b
JM		 539 if (!CryptAcquireCertificatePrivateKey(priv->cert,
540 CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
541 NULL, &priv->crypt_prov,
542 &priv->key_spec,
543 &priv->free_crypt_prov)) {
544 cryptoapi_error("Failed to acquire a private key for the "
545 "certificate");
546 goto err;
547 }
548
549 rsa_meth->name = "Microsoft CryptoAPI RSA Method";
550 rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
551 rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
552 rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
553 rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
554 rsa_meth->finish = cryptoapi_finish;
555 rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
556 rsa_meth->app_data = (char *) priv;
557
558 rsa = RSA_new();
559 if (rsa == NULL) {
560 SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
561 ERR_R_MALLOC_FAILURE);
562 goto err;
563 }
564
565 if (!SSL_use_certificate(ssl, cert)) {
566 RSA_free(rsa);
567 rsa = NULL;
568 goto err;
569 }
570 pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
571 X509_free(cert);
572 cert = NULL;
573
574 rsa->n = BN_dup(pub_rsa->n);
575 rsa->e = BN_dup(pub_rsa->e);
576 if (!RSA_set_method(rsa, rsa_meth))
577 goto err;
578
579 if (!SSL_use_RSAPrivateKey(ssl, rsa))
580 goto err;
581 RSA_free(rsa);
582
583 return 0;
584
585err:
586 if (cert)
587 X509_free(cert);
588 if (rsa)
589 RSA_free(rsa);
590 else {
591 os_free(rsa_meth);
592 cryptoapi_free_data(priv);
593 }
594 return -1;
595}
596
597
598static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
599{
600 HCERTSTORE cs;
601 PCCERT_CONTEXT ctx = NULL;
602 X509 *cert;
603 char buf[128];
604 const char *store;
605#ifdef UNICODE
606 WCHAR *wstore;
607#endif /* UNICODE */
608
6fc6879b
JM		 609 if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
610 return -1;
611
612 store = name + 13;
613#ifdef UNICODE
614 wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
615 if (wstore == NULL)
616 return -1;
617 wsprintf(wstore, L"%S", store);
618 cs = CertOpenSystemStore(0, wstore);
619 os_free(wstore);
620#else /* UNICODE */
621 cs = CertOpenSystemStore(0, store);
622#endif /* UNICODE */
623 if (cs == NULL) {
624 wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
625 "'%s': error=%d", __func__, store,
626 (int) GetLastError());
627 return -1;
628 }
629
630 while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
fee31f76
JM		 631 cert = d2i_X509(NULL,
632 (const unsigned char **) &ctx->pbCertEncoded,
6fc6879b
JM		 633 ctx->cbCertEncoded);
634 if (cert == NULL) {
635 wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
636 "X509 DER encoding for CA cert");
637 continue;
638 }
639
640 X509_NAME_oneline(X509_get_subject_name(cert), buf,
641 sizeof(buf));
642 wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
643 "system certificate store: subject='%s'", buf);
644
f150db6c
DB		 645 if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx),
646 cert)) {
6fc6879b
JM		 647 tls_show_errors(MSG_WARNING, __func__,
648 "Failed to add ca_cert to OpenSSL "
649 "certificate store");
650 }
651
652 X509_free(cert);
653 }
654
655 if (!CertCloseStore(cs, 0)) {
656 wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
657 "'%s': error=%d", __func__, name + 13,
658 (int) GetLastError());
659 }
660
661 return 0;
662}
663
664
665#else /* CONFIG_NATIVE_WINDOWS */
666
667static int tls_cryptoapi_cert(SSL *ssl, const char *name)
668{
669 return -1;
670}
671
672#endif /* CONFIG_NATIVE_WINDOWS */
673
674
675static void ssl_info_cb(const SSL *ssl, int where, int ret)
676{
677 const char *str;
678 int w;
679
680 wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
681 w = where & ~SSL_ST_MASK;
682 if (w & SSL_ST_CONNECT)
683 str = "SSL_connect";
684 else if (w & SSL_ST_ACCEPT)
685 str = "SSL_accept";
686 else
687 str = "undefined";
688
689 if (where & SSL_CB_LOOP) {
690 wpa_printf(MSG_DEBUG, "SSL: %s:%s",
691 str, SSL_state_string_long(ssl));
692 } else if (where & SSL_CB_ALERT) {
7c0e1e27 693 struct tls_connection *conn = SSL_get_app_data((SSL *) ssl);
6fc6879b
JM		 694 wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
695 where & SSL_CB_READ ?
696 "read (remote end reported an error)" :
697 "write (local SSL3 detected an error)",
698 SSL_alert_type_string_long(ret),
699 SSL_alert_desc_string_long(ret));
700 if ((ret >> 8) == SSL3_AL_FATAL) {
6fc6879b
JM		 701 if (where & SSL_CB_READ)
702 conn->read_alerts++;
703 else
704 conn->write_alerts++;
705 }
7c0e1e27 706 if (conn->context->event_cb != NULL) {
dd7fec1f 707 union tls_event_data ev;
7c0e1e27 708 struct tls_context *context = conn->context;
dd7fec1f
PS		 709 os_memset(&ev, 0, sizeof(ev));
710 ev.alert.is_local = !(where & SSL_CB_READ);
711 ev.alert.type = SSL_alert_type_string_long(ret);
712 ev.alert.description = SSL_alert_desc_string_long(ret);
7c0e1e27 713 context->event_cb(context->cb_ctx, TLS_ALERT, &ev);
dd7fec1f 714 }
6fc6879b
JM		 715 } else if (where & SSL_CB_EXIT && ret <= 0) {
716 wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
717 str, ret == 0 ? "failed" : "error",
718 SSL_state_string_long(ssl));
719 }
720}
721
722
723#ifndef OPENSSL_NO_ENGINE
724/**
725 * tls_engine_load_dynamic_generic - load any openssl engine
726 * @pre: an array of commands and values that load an engine initialized
727 * in the engine specific function
728 * @post: an array of commands and values that initialize an already loaded
729 * engine (or %NULL if not required)
730 * @id: the engine id of the engine to load (only required if post is not %NULL
731 *
732 * This function is a generic function that loads any openssl engine.
733 *
734 * Returns: 0 on success, -1 on failure
735 */
736static int tls_engine_load_dynamic_generic(const char *pre[],
737 const char *post[], const char *id)
738{
739 ENGINE *engine;
740 const char *dynamic_id = "dynamic";
741
742 engine = ENGINE_by_id(id);
743 if (engine) {
6fc6879b
JM		 744 wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
745 "available", id);
c3d7fb7e
DW		 746 /*
747 * If it was auto-loaded by ENGINE_by_id() we might still
748 * need to tell it which PKCS#11 module to use in legacy
749 * (non-p11-kit) environments. Do so now; even if it was
750 * properly initialised before, setting it again will be
751 * harmless.
752 */
753 goto found;
6fc6879b
JM		 754 }
755 ERR_clear_error();
756
757 engine = ENGINE_by_id(dynamic_id);
758 if (engine == NULL) {
759 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
760 dynamic_id,
761 ERR_error_string(ERR_get_error(), NULL));
762 return -1;
763 }
764
765 /* Perform the pre commands. This will load the engine. */
766 while (pre && pre[0]) {
767 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
768 if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
769 wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
770 "%s %s [%s]", pre[0], pre[1],
771 ERR_error_string(ERR_get_error(), NULL));
772 ENGINE_free(engine);
773 return -1;
774 }
775 pre += 2;
776 }
777
778 /*
779 * Free the reference to the "dynamic" engine. The loaded engine can
780 * now be looked up using ENGINE_by_id().
781 */
782 ENGINE_free(engine);
783
784 engine = ENGINE_by_id(id);
785 if (engine == NULL) {
786 wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
787 id, ERR_error_string(ERR_get_error(), NULL));
788 return -1;
789 }
c3d7fb7e 790 found:
6fc6879b
JM		 791 while (post && post[0]) {
792 wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
793 if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
794 wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
795 " %s %s [%s]", post[0], post[1],
796 ERR_error_string(ERR_get_error(), NULL));
797 ENGINE_remove(engine);
798 ENGINE_free(engine);
799 return -1;
800 }
801 post += 2;
802 }
803 ENGINE_free(engine);
804
805 return 0;
806}
807
808
809/**
810 * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
811 * @pkcs11_so_path: pksc11_so_path from the configuration
812 * @pcks11_module_path: pkcs11_module_path from the configuration
813 */
814static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
815 const char *pkcs11_module_path)
816{
817 char *engine_id = "pkcs11";
818 const char *pre_cmd[] = {
819 "SO_PATH", NULL /* pkcs11_so_path */,
820 "ID", NULL /* engine_id */,
821 "LIST_ADD", "1",
822 /* "NO_VCHECK", "1", */
823 "LOAD", NULL,
824 NULL, NULL
825 };
826 const char *post_cmd[] = {
827 "MODULE_PATH", NULL /* pkcs11_module_path */,
828 NULL, NULL
829 };
830
5c8ab0d4 831 if (!pkcs11_so_path)
6fc6879b
JM		 832 return 0;
833
834 pre_cmd[1] = pkcs11_so_path;
835 pre_cmd[3] = engine_id;
5c8ab0d4
DW		 836 if (pkcs11_module_path)
837 post_cmd[1] = pkcs11_module_path;
838 else
839 post_cmd[0] = NULL;
6fc6879b
JM		 840
841 wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
842 pkcs11_so_path);
843
844 return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
845}
846
847
848/**
849 * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
850 * @opensc_so_path: opensc_so_path from the configuration
851 */
852static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
853{
854 char *engine_id = "opensc";
855 const char *pre_cmd[] = {
856 "SO_PATH", NULL /* opensc_so_path */,
857 "ID", NULL /* engine_id */,
858 "LIST_ADD", "1",
859 "LOAD", NULL,
860 NULL, NULL
861 };
862
863 if (!opensc_so_path)
864 return 0;
865
866 pre_cmd[1] = opensc_so_path;
867 pre_cmd[3] = engine_id;
868
869 wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
870 opensc_so_path);
871
872 return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
873}
874#endif /* OPENSSL_NO_ENGINE */
875
876
acf36f31
JM		 877static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess)
878{
879 struct wpabuf *buf;
880
881 if (tls_ex_idx_session < 0)
882 return;
883 buf = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
884 if (!buf)
885 return;
886 wpa_printf(MSG_DEBUG,
887 "OpenSSL: Free application session data %p (sess %p)",
888 buf, sess);
889 wpabuf_free(buf);
890
891 SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL);
892}
893
894
6fc6879b
JM		 895void * tls_init(const struct tls_config *conf)
896{
bd9b8b2b 897 struct tls_data *data;
6fc6879b 898 SSL_CTX *ssl;
7c0e1e27 899 struct tls_context *context;
b7328434 900 const char *ciphers;
6fc6879b
JM		 901
902 if (tls_openssl_ref_count == 0) {
7c0e1e27
PS		 903 tls_global = context = tls_context_new(conf);
904 if (context == NULL)
00468b46 905 return NULL;
76f04b38
JM		 906#ifdef CONFIG_FIPS
907#ifdef OPENSSL_FIPS
cf123d7f 908 if (conf && conf->fips_mode) {
4fc53159
JM		 909 static int fips_enabled = 0;
910
911 if (!fips_enabled && !FIPS_mode_set(1)) {
76f04b38
JM		 912 wpa_printf(MSG_ERROR, "Failed to enable FIPS "
913 "mode");
914 ERR_load_crypto_strings();
915 ERR_print_errors_fp(stderr);
b36540db
JM		 916 os_free(tls_global);
917 tls_global = NULL;
76f04b38 918 return NULL;
4fc53159 919 } else {
76f04b38 920 wpa_printf(MSG_INFO, "Running in FIPS mode");
4fc53159
JM		 921 fips_enabled = 1;
922 }
76f04b38
JM		 923 }
924#else /* OPENSSL_FIPS */
cf123d7f 925 if (conf && conf->fips_mode) {
76f04b38
JM		 926 wpa_printf(MSG_ERROR, "FIPS mode requested, but not "
927 "supported");
b36540db
JM		 928 os_free(tls_global);
929 tls_global = NULL;
76f04b38
JM		 930 return NULL;
931 }
932#endif /* OPENSSL_FIPS */
933#endif /* CONFIG_FIPS */
df426738 934#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
6fc6879b
JM		 935 SSL_load_error_strings();
936 SSL_library_init();
fee31f76 937#ifndef OPENSSL_NO_SHA256
e1ffdfc1
JM		 938 EVP_add_digest(EVP_sha256());
939#endif /* OPENSSL_NO_SHA256 */
6fc6879b
JM		 940 /* TODO: if /dev/urandom is available, PRNG is seeded
941 * automatically. If this is not the case, random data should
942 * be added here. */
943
944#ifdef PKCS12_FUNCS
1056dad7
JM		 945#ifndef OPENSSL_NO_RC2
946 /*
947 * 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
948 * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
949 * versions, but it looks like OpenSSL 1.0.0 does not do that
950 * anymore.
951 */
952 EVP_add_cipher(EVP_rc2_40_cbc());
953#endif /* OPENSSL_NO_RC2 */
6fc6879b
JM		 954 PKCS12_PBE_add();
955#endif /* PKCS12_FUNCS */
29bc76e3 956#endif /* < 1.1.0 */
7c0e1e27 957 } else {
7c0e1e27
PS		 958 context = tls_context_new(conf);
959 if (context == NULL)
960 return NULL;
6fc6879b
JM		 961 }
962 tls_openssl_ref_count++;
963
bd9b8b2b
JM		 964 data = os_zalloc(sizeof(*data));
965 if (data)
966 ssl = SSL_CTX_new(SSLv23_method());
967 else
968 ssl = NULL;
7c0e1e27
PS		 969 if (ssl == NULL) {
970 tls_openssl_ref_count--;
a288da61
JM		 971 if (context != tls_global)
972 os_free(context);
7c0e1e27
PS		 973 if (tls_openssl_ref_count == 0) {
974 os_free(tls_global);
975 tls_global = NULL;
7c0e1e27 976 }
1f1e599b 977 os_free(data);
6fc6879b 978 return NULL;
7c0e1e27 979 }
bd9b8b2b 980 data->ssl = ssl;
acf36f31
JM		 981 if (conf)
982 data->tls_session_lifetime = conf->tls_session_lifetime;
6fc6879b 983
35efa247
JM		 984 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2);
985 SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3);
986
d7f12e4e
JM		 987#ifdef SSL_MODE_NO_AUTO_CHAIN
988 /* Number of deployed use cases assume the default OpenSSL behavior of
989 * auto chaining the local certificate is in use. BoringSSL removed this
990 * functionality by default, so we need to restore it here to avoid
991 * breaking existing use cases. */
992 SSL_CTX_clear_mode(ssl, SSL_MODE_NO_AUTO_CHAIN);
993#endif /* SSL_MODE_NO_AUTO_CHAIN */
994
6fc6879b 995 SSL_CTX_set_info_callback(ssl, ssl_info_cb);
7c0e1e27 996 SSL_CTX_set_app_data(ssl, context);
acf36f31
JM		 997 if (data->tls_session_lifetime > 0) {
998 SSL_CTX_set_quiet_shutdown(ssl, 1);
999 /*
1000 * Set default context here. In practice, this will be replaced
1001 * by the per-EAP method context in tls_connection_set_verify().
1002 */
1003 SSL_CTX_set_session_id_context(ssl, (u8 *) "hostapd", 7);
1004 SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_SERVER);
1005 SSL_CTX_set_timeout(ssl, data->tls_session_lifetime);
1006 SSL_CTX_sess_set_remove_cb(ssl, remove_session_cb);
1007 } else {
1008 SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_OFF);
1009 }
1010
1011 if (tls_ex_idx_session < 0) {
1012 tls_ex_idx_session = SSL_SESSION_get_ex_new_index(
1013 0, NULL, NULL, NULL, NULL);
1014 if (tls_ex_idx_session < 0) {
1015 tls_deinit(data);
1016 return NULL;
1017 }
1018 }
6fc6879b
JM		 1019
1020#ifndef OPENSSL_NO_ENGINE
ddda6276
DW		 1021 wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine");
1022 ERR_load_ENGINE_strings();
1023 ENGINE_load_dynamic();
1024
6fc6879b
JM		 1025 if (conf &&
1026 (conf->opensc_engine_path || conf->pkcs11_engine_path ||
1027 conf->pkcs11_module_path)) {
6fc6879b
JM		 1028 if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
1029 tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
1030 conf->pkcs11_module_path)) {
bd9b8b2b 1031 tls_deinit(data);
6fc6879b
JM		 1032 return NULL;
1033 }
1034 }
1035#endif /* OPENSSL_NO_ENGINE */
1036
b7328434
JM		 1037 if (conf && conf->openssl_ciphers)
1038 ciphers = conf->openssl_ciphers;
1039 else
2b9891bd 1040 ciphers = TLS_DEFAULT_CIPHERS;
b7328434
JM		 1041 if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) {
1042 wpa_printf(MSG_ERROR,
1043 "OpenSSL: Failed to set cipher string '%s'",
1044 ciphers);
bd9b8b2b 1045 tls_deinit(data);
b7328434
JM		 1046 return NULL;
1047 }
1048
bd9b8b2b 1049 return data;
6fc6879b
JM		 1050}
1051
1052
1053void tls_deinit(void *ssl_ctx)
1054{
bd9b8b2b
JM		 1055 struct tls_data *data = ssl_ctx;
1056 SSL_CTX *ssl = data->ssl;
7c0e1e27
PS		 1057 struct tls_context *context = SSL_CTX_get_app_data(ssl);
1058 if (context != tls_global)
1059 os_free(context);
acf36f31
JM		 1060 if (data->tls_session_lifetime > 0)
1061 SSL_CTX_flush_sessions(ssl, 0);
6fc6879b
JM		 1062 SSL_CTX_free(ssl);
1063
1064 tls_openssl_ref_count--;
1065 if (tls_openssl_ref_count == 0) {
df426738 1066#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
6fc6879b
JM		 1067#ifndef OPENSSL_NO_ENGINE
1068 ENGINE_cleanup();
1069#endif /* OPENSSL_NO_ENGINE */
1070 CRYPTO_cleanup_all_ex_data();
a8572960 1071 ERR_remove_thread_state(NULL);
6fc6879b
JM		 1072 ERR_free_strings();
1073 EVP_cleanup();
29bc76e3 1074#endif /* < 1.1.0 */
080585c0
JM		 1075 os_free(tls_global->ocsp_stapling_response);
1076 tls_global->ocsp_stapling_response = NULL;
00468b46
JM		 1077 os_free(tls_global);
1078 tls_global = NULL;
6fc6879b 1079 }
bd9b8b2b
JM		 1080
1081 os_free(data);
6fc6879b
JM		 1082}
1083
1084
fd4fb281
MG		 1085#ifndef OPENSSL_NO_ENGINE
1086
1087/* Cryptoki return values */
1088#define CKR_PIN_INCORRECT 0x000000a0
1089#define CKR_PIN_INVALID 0x000000a1
1090#define CKR_PIN_LEN_RANGE 0x000000a2
1091
1092/* libp11 */
1093#define ERR_LIB_PKCS11 ERR_LIB_USER
1094
1095static int tls_is_pin_error(unsigned int err)
1096{
1097 return ERR_GET_LIB(err) == ERR_LIB_PKCS11 &&
1098 (ERR_GET_REASON(err) == CKR_PIN_INCORRECT ||
1099 ERR_GET_REASON(err) == CKR_PIN_INVALID ||
1100 ERR_GET_REASON(err) == CKR_PIN_LEN_RANGE);
1101}
1102
1103#endif /* OPENSSL_NO_ENGINE */
1104
1105
aeeb0bca
AL		 1106#ifdef ANDROID
1107/* EVP_PKEY_from_keystore comes from system/security/keystore-engine. */
1108EVP_PKEY * EVP_PKEY_from_keystore(const char *key_id);
1109#endif /* ANDROID */
1110
6fc6879b 1111static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
e59c91af
DS		 1112 const char *pin, const char *key_id,
1113 const char *cert_id, const char *ca_cert_id)
6fc6879b 1114{
aeeb0bca
AL		 1115#if defined(ANDROID) && defined(OPENSSL_IS_BORINGSSL)
1116#if !defined(OPENSSL_NO_ENGINE)
1117#error "This code depends on OPENSSL_NO_ENGINE being defined by BoringSSL."
1118#endif
1119 if (!key_id)
1120 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1121 conn->engine = NULL;
1122 conn->private_key = EVP_PKEY_from_keystore(key_id);
1123 if (!conn->private_key) {
1124 wpa_printf(MSG_ERROR,
1125 "ENGINE: cannot load private key with id '%s' [%s]",
1126 key_id,
1127 ERR_error_string(ERR_get_error(), NULL));
1128 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1129 }
1130#endif /* ANDROID && OPENSSL_IS_BORINGSSL */
1131
6fc6879b
JM		 1132#ifndef OPENSSL_NO_ENGINE
1133 int ret = -1;
1134 if (engine_id == NULL) {
1135 wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
1136 return -1;
1137 }
6fc6879b
JM		 1138
1139 ERR_clear_error();
1176ab6d
KR		 1140#ifdef ANDROID
1141 ENGINE_load_dynamic();
1142#endif
6fc6879b
JM		 1143 conn->engine = ENGINE_by_id(engine_id);
1144 if (!conn->engine) {
1145 wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
1146 engine_id, ERR_error_string(ERR_get_error(), NULL));
1147 goto err;
1148 }
1149 if (ENGINE_init(conn->engine) != 1) {
1150 wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
1151 "(engine: %s) [%s]", engine_id,
1152 ERR_error_string(ERR_get_error(), NULL));
1153 goto err;
1154 }
1155 wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
1156
1176ab6d 1157#ifndef ANDROID
a642a52b 1158 if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
6fc6879b
JM		 1159 wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
1160 ERR_error_string(ERR_get_error(), NULL));
1161 goto err;
1162 }
1176ab6d 1163#endif
3d268b8d 1164 if (key_id) {
a642a52b
DW		 1165 /*
1166 * Ensure that the ENGINE does not attempt to use the OpenSSL
1167 * UI system to obtain a PIN, if we didn't provide one.
1168 */
1169 struct {
1170 const void *password;
1171 const char *prompt_info;
1172 } key_cb = { "", NULL };
1173
3d268b8d
DW		 1174 /* load private key first in-case PIN is required for cert */
1175 conn->private_key = ENGINE_load_private_key(conn->engine,
a642a52b
DW		 1176 key_id, NULL,
1177 &key_cb);
3d268b8d 1178 if (!conn->private_key) {
fd4fb281
MG		 1179 unsigned long err = ERR_get_error();
1180
3d268b8d
DW		 1181 wpa_printf(MSG_ERROR,
1182 "ENGINE: cannot load private key with id '%s' [%s]",
1183 key_id,
fd4fb281
MG		 1184 ERR_error_string(err, NULL));
1185 if (tls_is_pin_error(err))
1186 ret = TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
1187 else
1188 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
3d268b8d
DW		 1189 goto err;
1190 }
6fc6879b 1191 }
e59c91af
DS		 1192
1193 /* handle a certificate and/or CA certificate */
1194 if (cert_id || ca_cert_id) {
1195 const char *cmd_name = "LOAD_CERT_CTRL";
1196
1197 /* test if the engine supports a LOAD_CERT_CTRL */
1198 if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME,
1199 0, (void *)cmd_name, NULL)) {
1200 wpa_printf(MSG_ERROR, "ENGINE: engine does not support"
1201 " loading certificates");
1202 ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1203 goto err;
1204 }
1205 }
1206
6fc6879b
JM		 1207 return 0;
1208
1209err:
1210 if (conn->engine) {
1211 ENGINE_free(conn->engine);
1212 conn->engine = NULL;
1213 }
1214
1215 if (conn->private_key) {
1216 EVP_PKEY_free(conn->private_key);
1217 conn->private_key = NULL;
1218 }
1219
1220 return ret;
1221#else /* OPENSSL_NO_ENGINE */
1222 return 0;
1223#endif /* OPENSSL_NO_ENGINE */
1224}
1225
1226
1227static void tls_engine_deinit(struct tls_connection *conn)
1228{
aeeb0bca 1229#if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
6fc6879b
JM		 1230 wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
1231 if (conn->private_key) {
1232 EVP_PKEY_free(conn->private_key);
1233 conn->private_key = NULL;
1234 }
1235 if (conn->engine) {
aeeb0bca 1236#if !defined(OPENSSL_IS_BORINGSSL)
6fc6879b 1237 ENGINE_finish(conn->engine);
aeeb0bca 1238#endif /* !OPENSSL_IS_BORINGSSL */
6fc6879b
JM		 1239 conn->engine = NULL;
1240 }
aeeb0bca 1241#endif /* ANDROID || !OPENSSL_NO_ENGINE */
6fc6879b
JM		 1242}
1243
1244
1245int tls_get_errors(void *ssl_ctx)
1246{
1247 int count = 0;
1248 unsigned long err;
1249
1250 while ((err = ERR_get_error())) {
1251 wpa_printf(MSG_INFO, "TLS - SSL error: %s",
1252 ERR_error_string(err, NULL));
1253 count++;
1254 }
1255
1256 return count;
1257}
1258
bb52293e 1259
cbb15497
JM		 1260static const char * openssl_content_type(int content_type)
1261{
1262 switch (content_type) {
1263 case 20:
1264 return "change cipher spec";
1265 case 21:
1266 return "alert";
1267 case 22:
1268 return "handshake";
1269 case 23:
1270 return "application data";
1271 case 24:
1272 return "heartbeat";
1273 case 256:
1274 return "TLS header info"; /* pseudo content type */
1275 default:
1276 return "?";
1277 }
1278}
1279
1280
1281static const char * openssl_handshake_type(int content_type, const u8 *buf,
1282 size_t len)
1283{
1284 if (content_type != 22 || !buf || len == 0)
1285 return "";
1286 switch (buf[0]) {
1287 case 0:
1288 return "hello request";
1289 case 1:
1290 return "client hello";
1291 case 2:
1292 return "server hello";
1293 case 4:
1294 return "new session ticket";
1295 case 11:
1296 return "certificate";
1297 case 12:
1298 return "server key exchange";
1299 case 13:
1300 return "certificate request";
1301 case 14:
1302 return "server hello done";
1303 case 15:
1304 return "certificate verify";
1305 case 16:
1306 return "client key exchange";
1307 case 20:
1308 return "finished";
1309 case 21:
1310 return "certificate url";
1311 case 22:
1312 return "certificate status";
1313 default:
1314 return "?";
1315 }
1316}
1317
1318
1c9663cf
JM		 1319#ifdef CONFIG_SUITEB
1320
1321static void check_server_hello(struct tls_connection *conn,
1322 const u8 *pos, const u8 *end)
1323{
1324 size_t payload_len, id_len;
1325
1326 /*
1327 * Parse ServerHello to get the selected cipher suite since OpenSSL does
1328 * not make it cleanly available during handshake and we need to know
1329 * whether DHE was selected.
1330 */
1331
1332 if (end - pos < 3)
1333 return;
1334 payload_len = WPA_GET_BE24(pos);
1335 pos += 3;
1336
1337 if ((size_t) (end - pos) < payload_len)
1338 return;
1339 end = pos + payload_len;
1340
1341 /* Skip Version and Random */
1342 if (end - pos < 2 + SSL3_RANDOM_SIZE)
1343 return;
1344 pos += 2 + SSL3_RANDOM_SIZE;
1345
1346 /* Skip Session ID */
1347 if (end - pos < 1)
1348 return;
1349 id_len = *pos++;
1350 if ((size_t) (end - pos) < id_len)
1351 return;
1352 pos += id_len;
1353
1354 if (end - pos < 2)
1355 return;
1356 conn->cipher_suite = WPA_GET_BE16(pos);
1357 wpa_printf(MSG_DEBUG, "OpenSSL: Server selected cipher suite 0x%x",
1358 conn->cipher_suite);
1359}
1360
1361
1362static void check_server_key_exchange(SSL *ssl, struct tls_connection *conn,
1363 const u8 *pos, const u8 *end)
1364{
1365 size_t payload_len;
1366 u16 dh_len;
1367 BIGNUM *p;
1368 int bits;
1369
1370 if (!(conn->flags & TLS_CONN_SUITEB))
1371 return;
1372
1373 /* DHE is enabled only with DHE-RSA-AES256-GCM-SHA384 */
1374 if (conn->cipher_suite != 0x9f)
1375 return;
1376
1377 if (end - pos < 3)
1378 return;
1379 payload_len = WPA_GET_BE24(pos);
1380 pos += 3;
1381
1382 if ((size_t) (end - pos) < payload_len)
1383 return;
1384 end = pos + payload_len;
1385
1386 if (end - pos < 2)
1387 return;
1388 dh_len = WPA_GET_BE16(pos);
1389 pos += 2;
1390
1391 if ((size_t) (end - pos) < dh_len)
1392 return;
1393 p = BN_bin2bn(pos, dh_len, NULL);
1394 if (!p)
1395 return;
1396
1397 bits = BN_num_bits(p);
1398 BN_free(p);
1399
1400 conn->server_dh_prime_len = bits;
1401 wpa_printf(MSG_DEBUG, "OpenSSL: Server DH prime length: %d bits",
1402 conn->server_dh_prime_len);
1403}
1404
1405#endif /* CONFIG_SUITEB */
1406
1407
bb52293e
JM		 1408static void tls_msg_cb(int write_p, int version, int content_type,
1409 const void *buf, size_t len, SSL *ssl, void *arg)
1410{
1411 struct tls_connection *conn = arg;
1412 const u8 *pos = buf;
1413
faf8f293
JM		 1414 if (write_p == 2) {
1415 wpa_printf(MSG_DEBUG,
1416 "OpenSSL: session ver=0x%x content_type=%d",
1417 version, content_type);
1418 wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Data", buf, len);
1419 return;
1420 }
1421
cbb15497
JM		 1422 wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d (%s/%s)",
1423 write_p ? "TX" : "RX", version, content_type,
1424 openssl_content_type(content_type),
1425 openssl_handshake_type(content_type, buf, len));
bb52293e
JM		 1426 wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len);
1427 if (content_type == 24 && len >= 3 && pos[0] == 1) {
1428 size_t payload_len = WPA_GET_BE16(pos + 1);
1429 if (payload_len + 3 > len) {
1430 wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected");
1431 conn->invalid_hb_used = 1;
1432 }
1433 }
1c9663cf
JM		 1434
1435#ifdef CONFIG_SUITEB
1436 /*
1437 * Need to parse these handshake messages to be able to check DH prime
1438 * length since OpenSSL does not expose the new cipher suite and DH
1439 * parameters during handshake (e.g., for cert_cb() callback).
1440 */
1441 if (content_type == 22 && pos && len > 0 && pos[0] == 2)
1442 check_server_hello(conn, pos + 1, pos + len);
1443 if (content_type == 22 && pos && len > 0 && pos[0] == 12)
1444 check_server_key_exchange(ssl, conn, pos + 1, pos + len);
1445#endif /* CONFIG_SUITEB */
bb52293e
JM		 1446}
1447
1448
6a31a31d 1449struct tls_connection * tls_connection_init(void *ssl_ctx)
6fc6879b 1450{
bd9b8b2b
JM		 1451 struct tls_data *data = ssl_ctx;
1452 SSL_CTX *ssl = data->ssl;
6a31a31d 1453 struct tls_connection *conn;
fca25ef4 1454 long options;
6a31a31d 1455 struct tls_context *context = SSL_CTX_get_app_data(ssl);
6fc6879b 1456
6a31a31d
JM		 1457 conn = os_zalloc(sizeof(*conn));
1458 if (conn == NULL)
1459 return NULL;
bd9b8b2b 1460 conn->ssl_ctx = ssl;
6a31a31d
JM		 1461 conn->ssl = SSL_new(ssl);
1462 if (conn->ssl == NULL) {
6fc6879b
JM		 1463 tls_show_errors(MSG_INFO, __func__,
1464 "Failed to initialize new SSL connection");
6a31a31d
JM		 1465 os_free(conn);
1466 return NULL;
6fc6879b
JM		 1467 }
1468
6a31a31d
JM		 1469 conn->context = context;
1470 SSL_set_app_data(conn->ssl, conn);
1471 SSL_set_msg_callback(conn->ssl, tls_msg_cb);
1472 SSL_set_msg_callback_arg(conn->ssl, conn);
fca25ef4
JM		 1473 options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
1474 SSL_OP_SINGLE_DH_USE;
1475#ifdef SSL_OP_NO_COMPRESSION
1476 options |= SSL_OP_NO_COMPRESSION;
1477#endif /* SSL_OP_NO_COMPRESSION */
6a31a31d 1478 SSL_set_options(conn->ssl, options);
6fc6879b 1479
6a31a31d
JM		 1480 conn->ssl_in = BIO_new(BIO_s_mem());
1481 if (!conn->ssl_in) {
6fc6879b
JM		 1482 tls_show_errors(MSG_INFO, __func__,
1483 "Failed to create a new BIO for ssl_in");
6a31a31d
JM		 1484 SSL_free(conn->ssl);
1485 os_free(conn);
1486 return NULL;
6fc6879b
JM		 1487 }
1488
6a31a31d
JM		 1489 conn->ssl_out = BIO_new(BIO_s_mem());
1490 if (!conn->ssl_out) {
6fc6879b
JM		 1491 tls_show_errors(MSG_INFO, __func__,
1492 "Failed to create a new BIO for ssl_out");
1493 SSL_free(conn->ssl);
6a31a31d 1494 BIO_free(conn->ssl_in);
6fc6879b
JM		 1495 os_free(conn);
1496 return NULL;
1497 }
1498
6a31a31d
JM		 1499 SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
1500
6fc6879b
JM		 1501 return conn;
1502}
1503
1504
1505void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
1506{
1507 if (conn == NULL)
1508 return;
acf36f31
JM		 1509 if (conn->success_data) {
1510 /*
1511 * Make sure ssl_clear_bad_session() does not remove this
1512 * session.
1513 */
1514 SSL_set_quiet_shutdown(conn->ssl, 1);
1515 SSL_shutdown(conn->ssl);
1516 }
6fc6879b
JM		 1517 SSL_free(conn->ssl);
1518 tls_engine_deinit(conn);
1519 os_free(conn->subject_match);
1520 os_free(conn->altsubject_match);
01f809c7 1521 os_free(conn->suffix_match);
cebee30f 1522 os_free(conn->domain_match);
6fc6879b
JM		 1523 os_free(conn->session_ticket);
1524 os_free(conn);
1525}
1526
1527
1528int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
1529{
1530 return conn ? SSL_is_init_finished(conn->ssl) : 0;
1531}
1532
1533
1534int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
1535{
1536 if (conn == NULL)
1537 return -1;
1538
1539 /* Shutdown previous TLS connection without notifying the peer
1540 * because the connection was already terminated in practice
1541 * and "close notify" shutdown alert would confuse AS. */
1542 SSL_set_quiet_shutdown(conn->ssl, 1);
1543 SSL_shutdown(conn->ssl);
a7803b0c 1544 return SSL_clear(conn->ssl) == 1 ? 0 : -1;
6fc6879b
JM		 1545}
1546
1547
1548static int tls_match_altsubject_component(X509 *cert, int type,
1549 const char *value, size_t len)
1550{
1551 GENERAL_NAME *gen;
1552 void *ext;
a8572960
AL		 1553 int found = 0;
1554 stack_index_t i;
6fc6879b
JM		 1555
1556 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1557
1558 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1559 gen = sk_GENERAL_NAME_value(ext, i);
1560 if (gen->type != type)
1561 continue;
1562 if (os_strlen((char *) gen->d.ia5->data) == len &&
1563 os_memcmp(value, gen->d.ia5->data, len) == 0)
1564 found++;
1565 }
1566
0f096370
JM		 1567 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
1568
6fc6879b
JM		 1569 return found;
1570}
1571
1572
1573static int tls_match_altsubject(X509 *cert, const char *match)
1574{
1575 int type;
1576 const char *pos, *end;
1577 size_t len;
1578
1579 pos = match;
1580 do {
1581 if (os_strncmp(pos, "EMAIL:", 6) == 0) {
1582 type = GEN_EMAIL;
1583 pos += 6;
1584 } else if (os_strncmp(pos, "DNS:", 4) == 0) {
1585 type = GEN_DNS;
1586 pos += 4;
1587 } else if (os_strncmp(pos, "URI:", 4) == 0) {
1588 type = GEN_URI;
1589 pos += 4;
1590 } else {
1591 wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
1592 "match '%s'", pos);
1593 return 0;
1594 }
1595 end = os_strchr(pos, ';');
1596 while (end) {
1597 if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
1598 os_strncmp(end + 1, "DNS:", 4) == 0 ||
1599 os_strncmp(end + 1, "URI:", 4) == 0)
1600 break;
1601 end = os_strchr(end + 1, ';');
1602 }
1603 if (end)
1604 len = end - pos;
1605 else
1606 len = os_strlen(pos);
1607 if (tls_match_altsubject_component(cert, type, pos, len) > 0)
1608 return 1;
1609 pos = end + 1;
1610 } while (end);
1611
1612 return 0;
1613}
1614
1615
461e3ebe 1616#ifndef CONFIG_NATIVE_WINDOWS
cebee30f
JM		 1617static int domain_suffix_match(const u8 *val, size_t len, const char *match,
1618 int full)
01f809c7
JM		 1619{
1620 size_t i, match_len;
1621
1622 /* Check for embedded nuls that could mess up suffix matching */
1623 for (i = 0; i < len; i++) {
1624 if (val[i] == '\0') {
1625 wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject");
1626 return 0;
1627 }
1628 }
1629
1630 match_len = os_strlen(match);
cebee30f 1631 if (match_len > len || (full && match_len != len))
01f809c7
JM		 1632 return 0;
1633
1634 if (os_strncasecmp((const char *) val + len - match_len, match,
1635 match_len) != 0)
1636 return 0; /* no match */
1637
1638 if (match_len == len)
1639 return 1; /* exact match */
1640
1641 if (val[len - match_len - 1] == '.')
1642 return 1; /* full label match completes suffix match */
1643
1644 wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match");
1645 return 0;
1646}
461e3ebe 1647#endif /* CONFIG_NATIVE_WINDOWS */
01f809c7
JM		 1648
1649
cebee30f 1650static int tls_match_suffix(X509 *cert, const char *match, int full)
01f809c7 1651{
461e3ebe
JM		 1652#ifdef CONFIG_NATIVE_WINDOWS
1653 /* wincrypt.h has conflicting X509_NAME definition */
1654 return -1;
1655#else /* CONFIG_NATIVE_WINDOWS */
01f809c7
JM		 1656 GENERAL_NAME *gen;
1657 void *ext;
1658 int i;
98a1571d 1659 stack_index_t j;
01f809c7
JM		 1660 int dns_name = 0;
1661 X509_NAME *name;
1662
cebee30f
JM		 1663 wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s",
1664 full ? "": "suffix ", match);
01f809c7
JM		 1665
1666 ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1667
98a1571d
JM		 1668 for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) {
1669 gen = sk_GENERAL_NAME_value(ext, j);
01f809c7
JM		 1670 if (gen->type != GEN_DNS)
1671 continue;
1672 dns_name++;
1673 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName",
1674 gen->d.dNSName->data,
1675 gen->d.dNSName->length);
1676 if (domain_suffix_match(gen->d.dNSName->data,
cebee30f
JM		 1677 gen->d.dNSName->length, match, full) ==
1678 1) {
1679 wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found",
1680 full ? "Match" : "Suffix match");
0f096370 1681 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
01f809c7
JM		 1682 return 1;
1683 }
1684 }
0f096370 1685 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
01f809c7
JM		 1686
1687 if (dns_name) {
1688 wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched");
1689 return 0;
1690 }
1691
1692 name = X509_get_subject_name(cert);
1693 i = -1;
1694 for (;;) {
1695 X509_NAME_ENTRY *e;
1696 ASN1_STRING *cn;
1697
1698 i = X509_NAME_get_index_by_NID(name, NID_commonName, i);
1699 if (i == -1)
1700 break;
1701 e = X509_NAME_get_entry(name, i);
1702 if (e == NULL)
1703 continue;
1704 cn = X509_NAME_ENTRY_get_data(e);
1705 if (cn == NULL)
1706 continue;
1707 wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName",
1708 cn->data, cn->length);
cebee30f
JM		 1709 if (domain_suffix_match(cn->data, cn->length, match, full) == 1)
1710 {
1711 wpa_printf(MSG_DEBUG, "TLS: %s in commonName found",
1712 full ? "Match" : "Suffix match");
01f809c7
JM		 1713 return 1;
1714 }
1715 }
1716
cebee30f
JM		 1717 wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found",
1718 full ? "": "suffix ");
01f809c7 1719 return 0;
461e3ebe 1720#endif /* CONFIG_NATIVE_WINDOWS */
01f809c7
JM		 1721}
1722
1723
00468b46
JM		 1724static enum tls_fail_reason openssl_tls_fail_reason(int err)
1725{
1726 switch (err) {
1727 case X509_V_ERR_CERT_REVOKED:
1728 return TLS_FAIL_REVOKED;
1729 case X509_V_ERR_CERT_NOT_YET_VALID:
1730 case X509_V_ERR_CRL_NOT_YET_VALID:
1731 return TLS_FAIL_NOT_YET_VALID;
1732 case X509_V_ERR_CERT_HAS_EXPIRED:
1733 case X509_V_ERR_CRL_HAS_EXPIRED:
1734 return TLS_FAIL_EXPIRED;
1735 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
1736 case X509_V_ERR_UNABLE_TO_GET_CRL:
1737 case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
1738 case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
1739 case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
1740 case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1741 case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
1742 case X509_V_ERR_CERT_CHAIN_TOO_LONG:
1743 case X509_V_ERR_PATH_LENGTH_EXCEEDED:
1744 case X509_V_ERR_INVALID_CA:
1745 return TLS_FAIL_UNTRUSTED;
1746 case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
1747 case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
1748 case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
1749 case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
1750 case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
1751 case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
1752 case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
1753 case X509_V_ERR_CERT_UNTRUSTED:
1754 case X509_V_ERR_CERT_REJECTED:
1755 return TLS_FAIL_BAD_CERTIFICATE;
1756 default:
1757 return TLS_FAIL_UNSPECIFIED;
1758 }
1759}
1760
1761
1762static struct wpabuf * get_x509_cert(X509 *cert)
1763{
1764 struct wpabuf *buf;
1765 u8 *tmp;
1766
1767 int cert_len = i2d_X509(cert, NULL);
1768 if (cert_len <= 0)
1769 return NULL;
1770
1771 buf = wpabuf_alloc(cert_len);
1772 if (buf == NULL)
1773 return NULL;
1774
1775 tmp = wpabuf_put(buf, cert_len);
1776 i2d_X509(cert, &tmp);
1777 return buf;
1778}
1779
1780
1781static void openssl_tls_fail_event(struct tls_connection *conn,
1782 X509 *err_cert, int err, int depth,
1783 const char *subject, const char *err_str,
1784 enum tls_fail_reason reason)
1785{
1786 union tls_event_data ev;
1787 struct wpabuf *cert = NULL;
7c0e1e27 1788 struct tls_context *context = conn->context;
00468b46 1789
7c0e1e27 1790 if (context->event_cb == NULL)
00468b46
JM		 1791 return;
1792
1793 cert = get_x509_cert(err_cert);
1794 os_memset(&ev, 0, sizeof(ev));
1795 ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
1796 reason : openssl_tls_fail_reason(err);
1797 ev.cert_fail.depth = depth;
1798 ev.cert_fail.subject = subject;
1799 ev.cert_fail.reason_txt = err_str;
1800 ev.cert_fail.cert = cert;
7c0e1e27 1801 context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
00468b46
JM		 1802 wpabuf_free(cert);
1803}
1804
1805
1806static void openssl_tls_cert_event(struct tls_connection *conn,
1807 X509 *err_cert, int depth,
1808 const char *subject)
1809{
1810 struct wpabuf *cert = NULL;
1811 union tls_event_data ev;
7c0e1e27 1812 struct tls_context *context = conn->context;
d07d3fbd
JM		 1813 char *altsubject[TLS_MAX_ALT_SUBJECT];
1814 int alt, num_altsubject = 0;
1815 GENERAL_NAME *gen;
1816 void *ext;
1817 stack_index_t i;
00468b46
JM		 1818#ifdef CONFIG_SHA256
1819 u8 hash[32];
1820#endif /* CONFIG_SHA256 */
1821
7c0e1e27 1822 if (context->event_cb == NULL)
00468b46
JM		 1823 return;
1824
1825 os_memset(&ev, 0, sizeof(ev));
3c108b75
JM		 1826 if (conn->cert_probe || (conn->flags & TLS_CONN_EXT_CERT_CHECK) ||
1827 context->cert_in_cb) {
00468b46
JM		 1828 cert = get_x509_cert(err_cert);
1829 ev.peer_cert.cert = cert;
1830 }
1831#ifdef CONFIG_SHA256
1832 if (cert) {
1833 const u8 *addr[1];
1834 size_t len[1];
1835 addr[0] = wpabuf_head(cert);
1836 len[0] = wpabuf_len(cert);
1837 if (sha256_vector(1, addr, len, hash) == 0) {
1838 ev.peer_cert.hash = hash;
1839 ev.peer_cert.hash_len = sizeof(hash);
1840 }
1841 }
1842#endif /* CONFIG_SHA256 */
1843 ev.peer_cert.depth = depth;
1844 ev.peer_cert.subject = subject;
d07d3fbd
JM		 1845
1846 ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL);
1847 for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1848 char *pos;
1849
1850 if (num_altsubject == TLS_MAX_ALT_SUBJECT)
1851 break;
1852 gen = sk_GENERAL_NAME_value(ext, i);
1853 if (gen->type != GEN_EMAIL &&
1854 gen->type != GEN_DNS &&
1855 gen->type != GEN_URI)
1856 continue;
1857
1858 pos = os_malloc(10 + gen->d.ia5->length + 1);
1859 if (pos == NULL)
1860 break;
1861 altsubject[num_altsubject++] = pos;
1862
1863 switch (gen->type) {
1864 case GEN_EMAIL:
1865 os_memcpy(pos, "EMAIL:", 6);
1866 pos += 6;
1867 break;
1868 case GEN_DNS:
1869 os_memcpy(pos, "DNS:", 4);
1870 pos += 4;
1871 break;
1872 case GEN_URI:
1873 os_memcpy(pos, "URI:", 4);
1874 pos += 4;
1875 break;
1876 }
1877
1878 os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length);
1879 pos += gen->d.ia5->length;
1880 *pos = '\0';
1881 }
0f096370 1882 sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free);
d07d3fbd
JM		 1883
1884 for (alt = 0; alt < num_altsubject; alt++)
1885 ev.peer_cert.altsubject[alt] = altsubject[alt];
1886 ev.peer_cert.num_altsubject = num_altsubject;
1887
7c0e1e27 1888 context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
00468b46 1889 wpabuf_free(cert);
d07d3fbd
JM		 1890 for (alt = 0; alt < num_altsubject; alt++)
1891 os_free(altsubject[alt]);
00468b46
JM		 1892}
1893
1894
6fc6879b
JM		 1895static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
1896{
1897 char buf[256];
1898 X509 *err_cert;
1899 int err, depth;
1900 SSL *ssl;
1901 struct tls_connection *conn;
7c0e1e27 1902 struct tls_context *context;
cebee30f 1903 char *match, *altmatch, *suffix_match, *domain_match;
00468b46 1904 const char *err_str;
6fc6879b
JM		 1905
1906 err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
97efe70b
EL		 1907 if (!err_cert)
1908 return 0;
1909
6fc6879b
JM		 1910 err = X509_STORE_CTX_get_error(x509_ctx);
1911 depth = X509_STORE_CTX_get_error_depth(x509_ctx);
1912 ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
1913 SSL_get_ex_data_X509_STORE_CTX_idx());
1914 X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
1915
1916 conn = SSL_get_app_data(ssl);
0bdaa741
JM		 1917 if (conn == NULL)
1918 return 0;
080585c0
JM		 1919
1920 if (depth == 0)
1921 conn->peer_cert = err_cert;
1922 else if (depth == 1)
1923 conn->peer_issuer = err_cert;
6bf61fb2
JM		 1924 else if (depth == 2)
1925 conn->peer_issuer_issuer = err_cert;
080585c0 1926
7c0e1e27 1927 context = conn->context;
0bdaa741
JM		 1928 match = conn->subject_match;
1929 altmatch = conn->altsubject_match;
01f809c7 1930 suffix_match = conn->suffix_match;
cebee30f 1931 domain_match = conn->domain_match;
6fc6879b 1932
00468b46
JM		 1933 if (!preverify_ok && !conn->ca_cert_verify)
1934 preverify_ok = 1;
1935 if (!preverify_ok && depth > 0 && conn->server_cert_only)
1936 preverify_ok = 1;
235279e7
JM		 1937 if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) &&
1938 (err == X509_V_ERR_CERT_HAS_EXPIRED ||
1939 err == X509_V_ERR_CERT_NOT_YET_VALID)) {
1940 wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity "
1941 "time mismatch");
1942 preverify_ok = 1;
1943 }
00468b46
JM		 1944
1945 err_str = X509_verify_cert_error_string(err);
1946
1947#ifdef CONFIG_SHA256
00033a09
RA		 1948 /*
1949 * Do not require preverify_ok so we can explicity allow otherwise
1950 * invalid pinned server certificates.
1951 */
1952 if (depth == 0 && conn->server_cert_only) {
00468b46
JM		 1953 struct wpabuf *cert;
1954 cert = get_x509_cert(err_cert);
1955 if (!cert) {
1956 wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch "
1957 "server certificate data");
6fc6879b 1958 preverify_ok = 0;
00468b46
JM		 1959 } else {
1960 u8 hash[32];
1961 const u8 *addr[1];
1962 size_t len[1];
1963 addr[0] = wpabuf_head(cert);
1964 len[0] = wpabuf_len(cert);
1965 if (sha256_vector(1, addr, len, hash) < 0 ||
1966 os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
1967 err_str = "Server certificate mismatch";
1968 err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
1969 preverify_ok = 0;
00033a09
RA		 1970 } else if (!preverify_ok) {
1971 /*
1972 * Certificate matches pinned certificate, allow
1973 * regardless of other problems.
1974 */
1975 wpa_printf(MSG_DEBUG,
1976 "OpenSSL: Ignore validation issues for a pinned server certificate");
1977 preverify_ok = 1;
00468b46
JM		 1978 }
1979 wpabuf_free(cert);
6fc6879b
JM		 1980 }
1981 }
00468b46
JM		 1982#endif /* CONFIG_SHA256 */
1983
1984 if (!preverify_ok) {
1985 wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
1986 " error %d (%s) depth %d for '%s'", err, err_str,
1987 depth, buf);
1988 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1989 err_str, TLS_FAIL_UNSPECIFIED);
1990 return preverify_ok;
1991 }
1992
1993 wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d "
1994 "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
1995 preverify_ok, err, err_str,
1996 conn->ca_cert_verify, depth, buf);
1997 if (depth == 0 && match && os_strstr(buf, match) == NULL) {
1998 wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
1999 "match with '%s'", buf, match);
2000 preverify_ok = 0;
2001 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2002 "Subject mismatch",
2003 TLS_FAIL_SUBJECT_MISMATCH);
2004 } else if (depth == 0 && altmatch &&
2005 !tls_match_altsubject(err_cert, altmatch)) {
2006 wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
2007 "'%s' not found", altmatch);
2008 preverify_ok = 0;
2009 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2010 "AltSubject mismatch",
2011 TLS_FAIL_ALTSUBJECT_MISMATCH);
01f809c7 2012 } else if (depth == 0 && suffix_match &&
cebee30f 2013 !tls_match_suffix(err_cert, suffix_match, 0)) {
01f809c7
JM		 2014 wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found",
2015 suffix_match);
2016 preverify_ok = 0;
2017 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2018 "Domain suffix mismatch",
2019 TLS_FAIL_DOMAIN_SUFFIX_MISMATCH);
cebee30f
JM		 2020 } else if (depth == 0 && domain_match &&
2021 !tls_match_suffix(err_cert, domain_match, 1)) {
2022 wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found",
2023 domain_match);
2024 preverify_ok = 0;
2025 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2026 "Domain mismatch",
2027 TLS_FAIL_DOMAIN_MISMATCH);
00468b46
JM		 2028 } else
2029 openssl_tls_cert_event(conn, err_cert, depth, buf);
2030
2031 if (conn->cert_probe && preverify_ok && depth == 0) {
2032 wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate "
2033 "on probe-only run");
2034 preverify_ok = 0;
2035 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2036 "Server certificate chain probe",
2037 TLS_FAIL_SERVER_CHAIN_PROBE);
2038 }
6fc6879b 2039
4eb8cfe0
JM		 2040#ifdef CONFIG_SUITEB
2041 if (conn->flags & TLS_CONN_SUITEB) {
2042 EVP_PKEY *pk;
2043 RSA *rsa;
2044 int len = -1;
2045
2046 pk = X509_get_pubkey(err_cert);
2047 if (pk) {
2048 rsa = EVP_PKEY_get1_RSA(pk);
2049 if (rsa) {
2050 len = RSA_bits(rsa);
2051 RSA_free(rsa);
2052 }
2053 EVP_PKEY_free(pk);
2054 }
2055
2056 if (len >= 0) {
2057 wpa_printf(MSG_DEBUG,
2058 "OpenSSL: RSA modulus size: %d bits", len);
2059 if (len < 3072) {
2060 preverify_ok = 0;
2061 openssl_tls_fail_event(
2062 conn, err_cert, err,
2063 depth, buf,
2064 "Insufficient RSA modulus size",
2065 TLS_FAIL_INSUFFICIENT_KEY_LEN);
2066 }
2067 }
2068 }
2069#endif /* CONFIG_SUITEB */
2070
bdee6ca0 2071#ifdef OPENSSL_IS_BORINGSSL
213e158c
JM		 2072 if (depth == 0 && (conn->flags & TLS_CONN_REQUEST_OCSP) &&
2073 preverify_ok) {
bdee6ca0
JM		 2074 enum ocsp_result res;
2075
213e158c
JM		 2076 res = check_ocsp_resp(conn->ssl_ctx, conn->ssl, err_cert,
2077 conn->peer_issuer,
2078 conn->peer_issuer_issuer);
bdee6ca0
JM		 2079 if (res == OCSP_REVOKED) {
2080 preverify_ok = 0;
2081 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2082 "certificate revoked",
2083 TLS_FAIL_REVOKED);
2084 if (err == X509_V_OK)
2085 X509_STORE_CTX_set_error(
2086 x509_ctx, X509_V_ERR_CERT_REVOKED);
2087 } else if (res != OCSP_GOOD &&
2088 (conn->flags & TLS_CONN_REQUIRE_OCSP)) {
2089 preverify_ok = 0;
2090 openssl_tls_fail_event(conn, err_cert, err, depth, buf,
2091 "bad certificate status response",
2092 TLS_FAIL_UNSPECIFIED);
2093 }
2094 }
2095#endif /* OPENSSL_IS_BORINGSSL */
2096
3c108b75 2097 if (depth == 0 && preverify_ok && context->event_cb != NULL)
7c0e1e27
PS		 2098 context->event_cb(context->cb_ctx,
2099 TLS_CERT_CHAIN_SUCCESS, NULL);
dd7fec1f 2100
6fc6879b
JM		 2101 return preverify_ok;
2102}
2103
2104
2105#ifndef OPENSSL_NO_STDIO
bd9b8b2b 2106static int tls_load_ca_der(struct tls_data *data, const char *ca_cert)
6fc6879b 2107{
bd9b8b2b 2108 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 2109 X509_LOOKUP *lookup;
2110 int ret = 0;
2111
68ae4773 2112 lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx),
6fc6879b
JM		 2113 X509_LOOKUP_file());
2114 if (lookup == NULL) {
2115 tls_show_errors(MSG_WARNING, __func__,
2116 "Failed add lookup for X509 store");
2117 return -1;
2118 }
2119
2120 if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
2121 unsigned long err = ERR_peek_error();
2122 tls_show_errors(MSG_WARNING, __func__,
2123 "Failed load CA in DER format");
2124 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2125 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2126 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
2127 "cert already in hash table error",
2128 __func__);
2129 } else
2130 ret = -1;
2131 }
2132
2133 return ret;
2134}
2135#endif /* OPENSSL_NO_STDIO */
2136
2137
bd9b8b2b
JM		 2138static int tls_connection_ca_cert(struct tls_data *data,
2139 struct tls_connection *conn,
6fc6879b
JM		 2140 const char *ca_cert, const u8 *ca_cert_blob,
2141 size_t ca_cert_blob_len, const char *ca_path)
2142{
bd9b8b2b 2143 SSL_CTX *ssl_ctx = data->ssl;
68ae4773 2144 X509_STORE *store;
6fc6879b
JM		 2145
2146 /*
2147 * Remove previously configured trusted CA certificates before adding
2148 * new ones.
2149 */
68ae4773
JM		 2150 store = X509_STORE_new();
2151 if (store == NULL) {
6fc6879b
JM		 2152 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
2153 "certificate store", __func__);
2154 return -1;
2155 }
68ae4773 2156 SSL_CTX_set_cert_store(ssl_ctx, store);
6fc6879b 2157
00468b46
JM		 2158 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2159 conn->ca_cert_verify = 1;
2160
2161 if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
2162 wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate "
2163 "chain");
2164 conn->cert_probe = 1;
2165 conn->ca_cert_verify = 0;
2166 return 0;
2167 }
2168
2169 if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
2170#ifdef CONFIG_SHA256
2171 const char *pos = ca_cert + 7;
2172 if (os_strncmp(pos, "server/sha256/", 14) != 0) {
2173 wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert "
2174 "hash value '%s'", ca_cert);
2175 return -1;
2176 }
2177 pos += 14;
2178 if (os_strlen(pos) != 32 * 2) {
2179 wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 "
2180 "hash length in ca_cert '%s'", ca_cert);
2181 return -1;
2182 }
2183 if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
2184 wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash "
2185 "value in ca_cert '%s'", ca_cert);
2186 return -1;
2187 }
2188 conn->server_cert_only = 1;
2189 wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server "
2190 "certificate match");
2191 return 0;
2192#else /* CONFIG_SHA256 */
2193 wpa_printf(MSG_INFO, "No SHA256 included in the build - "
2194 "cannot validate server certificate hash");
2195 return -1;
2196#endif /* CONFIG_SHA256 */
2197 }
2198
6fc6879b 2199 if (ca_cert_blob) {
fee31f76
JM		 2200 X509 *cert = d2i_X509(NULL,
2201 (const unsigned char **) &ca_cert_blob,
6fc6879b
JM		 2202 ca_cert_blob_len);
2203 if (cert == NULL) {
2204 tls_show_errors(MSG_WARNING, __func__,
2205 "Failed to parse ca_cert_blob");
2206 return -1;
2207 }
2208
68ae4773
JM		 2209 if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx),
2210 cert)) {
6fc6879b
JM		 2211 unsigned long err = ERR_peek_error();
2212 tls_show_errors(MSG_WARNING, __func__,
2213 "Failed to add ca_cert_blob to "
2214 "certificate store");
2215 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2216 ERR_GET_REASON(err) ==
2217 X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2218 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
2219 "cert already in hash table error",
2220 __func__);
2221 } else {
2222 X509_free(cert);
2223 return -1;
2224 }
2225 }
2226 X509_free(cert);
2227 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
2228 "to certificate store", __func__);
6fc6879b
JM		 2229 return 0;
2230 }
2231
2a0cd067 2232#ifdef ANDROID
a8ef133f 2233 /* Single alias */
2a0cd067 2234 if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) {
f150db6c 2235 if (tls_add_ca_from_keystore(SSL_CTX_get_cert_store(ssl_ctx),
a8ef133f 2236 &ca_cert[11]) < 0)
2a0cd067 2237 return -1;
a8ef133f
RX		 2238 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2239 return 0;
2240 }
2a0cd067 2241
a8ef133f
RX		 2242 /* Multiple aliases separated by space */
2243 if (ca_cert && os_strncmp("keystores://", ca_cert, 12) == 0) {
2244 char *aliases = os_strdup(&ca_cert[12]);
2245 const char *delim = " ";
2246 int rc = 0;
2247 char *savedptr;
2248 char *alias;
2249
2250 if (!aliases)
2251 return -1;
2252 alias = strtok_r(aliases, delim, &savedptr);
2253 for (; alias; alias = strtok_r(NULL, delim, &savedptr)) {
2254 if (tls_add_ca_from_keystore_encoded(
f150db6c 2255 SSL_CTX_get_cert_store(ssl_ctx), alias)) {
a8ef133f
RX		 2256 wpa_printf(MSG_WARNING,
2257 "OpenSSL: %s - Failed to add ca_cert %s from keystore",
2258 __func__, alias);
2259 rc = -1;
2260 break;
2a0cd067
DS		 2261 }
2262 }
a8ef133f
RX		 2263 os_free(aliases);
2264 if (rc)
2265 return rc;
2266
2a0cd067
DS		 2267 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2268 return 0;
2269 }
2270#endif /* ANDROID */
2271
6fc6879b
JM		 2272#ifdef CONFIG_NATIVE_WINDOWS
2273 if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
2274 0) {
2275 wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
2276 "system certificate store");
6fc6879b
JM		 2277 return 0;
2278 }
2279#endif /* CONFIG_NATIVE_WINDOWS */
2280
2281 if (ca_cert || ca_path) {
2282#ifndef OPENSSL_NO_STDIO
2283 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
2284 1) {
2285 tls_show_errors(MSG_WARNING, __func__,
2286 "Failed to load root certificates");
2287 if (ca_cert &&
bd9b8b2b 2288 tls_load_ca_der(data, ca_cert) == 0) {
6fc6879b
JM		 2289 wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
2290 "DER format CA certificate",
2291 __func__);
2292 } else
2293 return -1;
2294 } else {
2295 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
2296 "certificate(s) loaded");
bd9b8b2b 2297 tls_get_errors(data);
6fc6879b 2298 }
6fc6879b
JM		 2299#else /* OPENSSL_NO_STDIO */
2300 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
2301 __func__);
2302 return -1;
2303#endif /* OPENSSL_NO_STDIO */
2304 } else {
2305 /* No ca_cert configured - do not try to verify server
2306 * certificate */
00468b46 2307 conn->ca_cert_verify = 0;
6fc6879b
JM		 2308 }
2309
2310 return 0;
2311}
2312
2313
bd9b8b2b 2314static int tls_global_ca_cert(struct tls_data *data, const char *ca_cert)
6fc6879b 2315{
bd9b8b2b
JM		 2316 SSL_CTX *ssl_ctx = data->ssl;
2317
6fc6879b
JM		 2318 if (ca_cert) {
2319 if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
2320 {
2321 tls_show_errors(MSG_WARNING, __func__,
2322 "Failed to load root certificates");
2323 return -1;
2324 }
2325
2326 wpa_printf(MSG_DEBUG, "TLS: Trusted root "
2327 "certificate(s) loaded");
2328
2329#ifndef OPENSSL_NO_STDIO
2330 /* Add the same CAs to the client certificate requests */
2331 SSL_CTX_set_client_CA_list(ssl_ctx,
2332 SSL_load_client_CA_file(ca_cert));
2333#endif /* OPENSSL_NO_STDIO */
2334 }
2335
2336 return 0;
2337}
2338
2339
2340int tls_global_set_verify(void *ssl_ctx, int check_crl)
2341{
2342 int flags;
2343
2344 if (check_crl) {
bd9b8b2b
JM		 2345 struct tls_data *data = ssl_ctx;
2346 X509_STORE *cs = SSL_CTX_get_cert_store(data->ssl);
6fc6879b
JM		 2347 if (cs == NULL) {
2348 tls_show_errors(MSG_INFO, __func__, "Failed to get "
2349 "certificate store when enabling "
2350 "check_crl");
2351 return -1;
2352 }
2353 flags = X509_V_FLAG_CRL_CHECK;
2354 if (check_crl == 2)
2355 flags |= X509_V_FLAG_CRL_CHECK_ALL;
2356 X509_STORE_set_flags(cs, flags);
2357 }
2358 return 0;
2359}
2360
2361
2362static int tls_connection_set_subject_match(struct tls_connection *conn,
2363 const char *subject_match,
01f809c7 2364 const char *altsubject_match,
cebee30f
JM		 2365 const char *suffix_match,
2366 const char *domain_match)
6fc6879b
JM		 2367{
2368 os_free(conn->subject_match);
2369 conn->subject_match = NULL;
2370 if (subject_match) {
2371 conn->subject_match = os_strdup(subject_match);
2372 if (conn->subject_match == NULL)
2373 return -1;
2374 }
2375
2376 os_free(conn->altsubject_match);
2377 conn->altsubject_match = NULL;
2378 if (altsubject_match) {
2379 conn->altsubject_match = os_strdup(altsubject_match);
2380 if (conn->altsubject_match == NULL)
2381 return -1;
2382 }
2383
01f809c7
JM		 2384 os_free(conn->suffix_match);
2385 conn->suffix_match = NULL;
2386 if (suffix_match) {
2387 conn->suffix_match = os_strdup(suffix_match);
2388 if (conn->suffix_match == NULL)
2389 return -1;
2390 }
2391
cebee30f
JM		 2392 os_free(conn->domain_match);
2393 conn->domain_match = NULL;
2394 if (domain_match) {
2395 conn->domain_match = os_strdup(domain_match);
2396 if (conn->domain_match == NULL)
2397 return -1;
2398 }
2399
6fc6879b
JM		 2400 return 0;
2401}
2402
2403
1c9663cf
JM		 2404#ifdef CONFIG_SUITEB
2405#if OPENSSL_VERSION_NUMBER >= 0x10002000L
2406static int suiteb_cert_cb(SSL *ssl, void *arg)
2407{
2408 struct tls_connection *conn = arg;
2409
2410 /*
2411 * This cert_cb() is not really the best location for doing a
2412 * constraint check for the ServerKeyExchange message, but this seems to
2413 * be the only place where the current OpenSSL sequence can be
2414 * terminated cleanly with an TLS alert going out to the server.
2415 */
2416
2417 if (!(conn->flags & TLS_CONN_SUITEB))
2418 return 1;
2419
2420 /* DHE is enabled only with DHE-RSA-AES256-GCM-SHA384 */
2421 if (conn->cipher_suite != 0x9f)
2422 return 1;
2423
2424 if (conn->server_dh_prime_len >= 3072)
2425 return 1;
2426
2427 wpa_printf(MSG_DEBUG,
2428 "OpenSSL: Server DH prime length (%d bits) not sufficient for Suite B RSA - reject handshake",
2429 conn->server_dh_prime_len);
2430 return 0;
2431}
2432#endif /* OPENSSL_VERSION_NUMBER */
2433#endif /* CONFIG_SUITEB */
2434
2435
2436static int tls_set_conn_flags(struct tls_connection *conn, unsigned int flags)
93bc6549 2437{
1c9663cf
JM		 2438 SSL *ssl = conn->ssl;
2439
93bc6549
JM		 2440#ifdef SSL_OP_NO_TICKET
2441 if (flags & TLS_CONN_DISABLE_SESSION_TICKET)
2442 SSL_set_options(ssl, SSL_OP_NO_TICKET);
93bc6549
JM		 2443 else
2444 SSL_clear_options(ssl, SSL_OP_NO_TICKET);
93bc6549
JM		 2445#endif /* SSL_OP_NO_TICKET */
2446
2447#ifdef SSL_OP_NO_TLSv1
2448 if (flags & TLS_CONN_DISABLE_TLSv1_0)
2449 SSL_set_options(ssl, SSL_OP_NO_TLSv1);
2450 else
2451 SSL_clear_options(ssl, SSL_OP_NO_TLSv1);
2452#endif /* SSL_OP_NO_TLSv1 */
2453#ifdef SSL_OP_NO_TLSv1_1
2454 if (flags & TLS_CONN_DISABLE_TLSv1_1)
2455 SSL_set_options(ssl, SSL_OP_NO_TLSv1_1);
2456 else
2457 SSL_clear_options(ssl, SSL_OP_NO_TLSv1_1);
2458#endif /* SSL_OP_NO_TLSv1_1 */
2459#ifdef SSL_OP_NO_TLSv1_2
2460 if (flags & TLS_CONN_DISABLE_TLSv1_2)
2461 SSL_set_options(ssl, SSL_OP_NO_TLSv1_2);
2462 else
2463 SSL_clear_options(ssl, SSL_OP_NO_TLSv1_2);
2464#endif /* SSL_OP_NO_TLSv1_2 */
60ed2f24 2465#ifdef CONFIG_SUITEB
1c9663cf 2466#if OPENSSL_VERSION_NUMBER >= 0x10002000L
2ed70c75
JM		 2467 if (flags & TLS_CONN_SUITEB_NO_ECDH) {
2468 const char *ciphers = "DHE-RSA-AES256-GCM-SHA384";
2469
2470 if (SSL_set_cipher_list(ssl, ciphers) != 1) {
2471 wpa_printf(MSG_INFO,
2472 "OpenSSL: Failed to set Suite B ciphers");
2473 return -1;
2474 }
2475 } else if (flags & TLS_CONN_SUITEB) {
60ed2f24
JM		 2476 EC_KEY *ecdh;
2477 const char *ciphers =
2478 "ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384";
2479
2480 if (SSL_set_cipher_list(ssl, ciphers) != 1) {
2481 wpa_printf(MSG_INFO,
2482 "OpenSSL: Failed to set Suite B ciphers");
2483 return -1;
2484 }
2485
2486 if (SSL_set1_curves_list(ssl, "P-384") != 1) {
2487 wpa_printf(MSG_INFO,
2488 "OpenSSL: Failed to set Suite B curves");
2489 return -1;
2490 }
60ed2f24
JM		 2491
2492 ecdh = EC_KEY_new_by_curve_name(NID_secp384r1);
2493 if (!ecdh || SSL_set_tmp_ecdh(ssl, ecdh) != 1) {
2494 EC_KEY_free(ecdh);
2495 wpa_printf(MSG_INFO,
2496 "OpenSSL: Failed to set ECDH parameter");
2497 return -1;
2498 }
2499 EC_KEY_free(ecdh);
2ed70c75
JM		 2500 }
2501 if (flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) {
b9dc63c2 2502#ifndef OPENSSL_IS_BORINGSSL
2ed70c75
JM		 2503 /* ECDSA+SHA384 if need to add EC support here */
2504 if (SSL_set1_sigalgs_list(ssl, "RSA+SHA384") != 1) {
2505 wpa_printf(MSG_INFO,
2506 "OpenSSL: Failed to set Suite B sigalgs");
2507 return -1;
2508 }
b9dc63c2 2509#endif /* OPENSSL_IS_BORINGSSL */
60ed2f24
JM		 2510
2511 SSL_set_options(ssl, SSL_OP_NO_TLSv1);
2512 SSL_set_options(ssl, SSL_OP_NO_TLSv1_1);
1c9663cf
JM		 2513 SSL_set_cert_cb(ssl, suiteb_cert_cb, conn);
2514 }
2515#else /* OPENSSL_VERSION_NUMBER < 0x10002000L */
2516 if (flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) {
2517 wpa_printf(MSG_ERROR,
2518 "OpenSSL: Suite B RSA case not supported with this OpenSSL version");
2519 return -1;
60ed2f24 2520 }
1c9663cf 2521#endif /* OPENSSL_VERSION_NUMBER */
60ed2f24
JM		 2522#endif /* CONFIG_SUITEB */
2523
2524 return 0;
93bc6549
JM		 2525}
2526
2527
6fc6879b 2528int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
bfbebd26
JM		 2529 int verify_peer, unsigned int flags,
2530 const u8 *session_ctx, size_t session_ctx_len)
6fc6879b 2531{
bf206cad 2532 static int counter = 0;
acf36f31 2533 struct tls_data *data = ssl_ctx;
bf206cad 2534
6fc6879b
JM		 2535 if (conn == NULL)
2536 return -1;
2537
2538 if (verify_peer) {
00468b46 2539 conn->ca_cert_verify = 1;
6fc6879b
JM		 2540 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
2541 SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
2542 SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
2543 } else {
00468b46 2544 conn->ca_cert_verify = 0;
6fc6879b
JM		 2545 SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
2546 }
2547
1c9663cf 2548 if (tls_set_conn_flags(conn, flags) < 0)
60ed2f24 2549 return -1;
93bc6549
JM		 2550 conn->flags = flags;
2551
6fc6879b
JM		 2552 SSL_set_accept_state(conn->ssl);
2553
acf36f31
JM		 2554 if (data->tls_session_lifetime == 0) {
2555 /*
2556 * Set session id context to a unique value to make sure
2557 * session resumption cannot be used either through session
2558 * caching or TLS ticket extension.
2559 */
2560 counter++;
2561 SSL_set_session_id_context(conn->ssl,
2562 (const unsigned char *) &counter,
2563 sizeof(counter));
2564 } else if (session_ctx) {
2565 SSL_set_session_id_context(conn->ssl, session_ctx,
2566 session_ctx_len);
2567 }
bf206cad 2568
6fc6879b
JM		 2569 return 0;
2570}
2571
2572
2573static int tls_connection_client_cert(struct tls_connection *conn,
2574 const char *client_cert,
2575 const u8 *client_cert_blob,
2576 size_t client_cert_blob_len)
2577{
2578 if (client_cert == NULL && client_cert_blob == NULL)
2579 return 0;
2580
21cb63ff 2581#ifdef PKCS12_FUNCS
df426738 2582#if OPENSSL_VERSION_NUMBER < 0x10002000L || defined(LIBRESSL_VERSION_NUMBER)
21cb63ff
JM		 2583 /*
2584 * Clear previously set extra chain certificates, if any, from PKCS#12
2585 * processing in tls_parse_pkcs12() to allow OpenSSL to build a new
2586 * chain properly.
2587 */
2588 SSL_CTX_clear_extra_chain_certs(conn->ssl_ctx);
2589#endif /* OPENSSL_VERSION_NUMBER < 0x10002000L */
2590#endif /* PKCS12_FUNCS */
2591
6fc6879b
JM		 2592 if (client_cert_blob &&
2593 SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
2594 client_cert_blob_len) == 1) {
2595 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
2596 "OK");
2597 return 0;
2598 } else if (client_cert_blob) {
2599 tls_show_errors(MSG_DEBUG, __func__,
2600 "SSL_use_certificate_ASN1 failed");
2601 }
2602
2603 if (client_cert == NULL)
2604 return -1;
2605
2a0cd067
DS		 2606#ifdef ANDROID
2607 if (os_strncmp("keystore://", client_cert, 11) == 0) {
2608 BIO *bio = BIO_from_keystore(&client_cert[11]);
2609 X509 *x509 = NULL;
2610 int ret = -1;
2611 if (bio) {
2612 x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
2a0cd067
DS		 2613 }
2614 if (x509) {
2615 if (SSL_use_certificate(conn->ssl, x509) == 1)
2616 ret = 0;
2617 X509_free(x509);
2618 }
6d08f23f
PS		 2619
2620 /* Read additional certificates into the chain. */
2621 while (bio) {
2622 x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
2623 if (x509) {
2624 /* Takes ownership of x509 */
2625 SSL_add0_chain_cert(conn->ssl, x509);
2626 } else {
2627 BIO_free(bio);
2628 bio = NULL;
2629 }
2630 }
2a0cd067
DS		 2631 return ret;
2632 }
2633#endif /* ANDROID */
2634
6fc6879b
JM		 2635#ifndef OPENSSL_NO_STDIO
2636 if (SSL_use_certificate_file(conn->ssl, client_cert,
2637 SSL_FILETYPE_ASN1) == 1) {
2638 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
2639 " --> OK");
2640 return 0;
6fc6879b
JM		 2641 }
2642
2643 if (SSL_use_certificate_file(conn->ssl, client_cert,
2644 SSL_FILETYPE_PEM) == 1) {
effab86f 2645 ERR_clear_error();
6fc6879b
JM		 2646 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
2647 " --> OK");
2648 return 0;
6fc6879b 2649 }
effab86f
JM		 2650
2651 tls_show_errors(MSG_DEBUG, __func__,
2652 "SSL_use_certificate_file failed");
6fc6879b
JM		 2653#else /* OPENSSL_NO_STDIO */
2654 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
2655#endif /* OPENSSL_NO_STDIO */
2656
2657 return -1;
2658}
2659
2660
bd9b8b2b
JM		 2661static int tls_global_client_cert(struct tls_data *data,
2662 const char *client_cert)
6fc6879b
JM		 2663{
2664#ifndef OPENSSL_NO_STDIO
bd9b8b2b
JM		 2665 SSL_CTX *ssl_ctx = data->ssl;
2666
6fc6879b
JM		 2667 if (client_cert == NULL)
2668 return 0;
2669
2670 if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
2671 SSL_FILETYPE_ASN1) != 1 &&
65897747 2672 SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 &&
6fc6879b
JM		 2673 SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
2674 SSL_FILETYPE_PEM) != 1) {
2675 tls_show_errors(MSG_INFO, __func__,
2676 "Failed to load client certificate");
2677 return -1;
2678 }
2679 return 0;
2680#else /* OPENSSL_NO_STDIO */
2681 if (client_cert == NULL)
2682 return 0;
2683 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
2684 return -1;
2685#endif /* OPENSSL_NO_STDIO */
2686}
2687
2688
2689static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
2690{
2691 if (password == NULL) {
2692 return 0;
2693 }
2694 os_strlcpy(buf, (char *) password, size);
2695 return os_strlen(buf);
2696}
2697
2698
2699#ifdef PKCS12_FUNCS
bd9b8b2b 2700static int tls_parse_pkcs12(struct tls_data *data, SSL *ssl, PKCS12 *p12,
6fc6879b
JM		 2701 const char *passwd)
2702{
2703 EVP_PKEY *pkey;
2704 X509 *cert;
2705 STACK_OF(X509) *certs;
2706 int res = 0;
2707 char buf[256];
2708
2709 pkey = NULL;
2710 cert = NULL;
2711 certs = NULL;
c07e7b43
JM		 2712 if (!passwd)
2713 passwd = "";
6fc6879b
JM		 2714 if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
2715 tls_show_errors(MSG_DEBUG, __func__,
2716 "Failed to parse PKCS12 file");
2717 PKCS12_free(p12);
2718 return -1;
2719 }
2720 wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
2721
2722 if (cert) {
2723 X509_NAME_oneline(X509_get_subject_name(cert), buf,
2724 sizeof(buf));
2725 wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
2726 "subject='%s'", buf);
2727 if (ssl) {
2728 if (SSL_use_certificate(ssl, cert) != 1)
2729 res = -1;
2730 } else {
bd9b8b2b 2731 if (SSL_CTX_use_certificate(data->ssl, cert) != 1)
6fc6879b
JM		 2732 res = -1;
2733 }
2734 X509_free(cert);
2735 }
2736
2737 if (pkey) {
2738 wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
2739 if (ssl) {
2740 if (SSL_use_PrivateKey(ssl, pkey) != 1)
2741 res = -1;
2742 } else {
bd9b8b2b 2743 if (SSL_CTX_use_PrivateKey(data->ssl, pkey) != 1)
6fc6879b
JM		 2744 res = -1;
2745 }
2746 EVP_PKEY_free(pkey);
2747 }
2748
2749 if (certs) {
36e82060 2750#if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER)
dda091cf
AB		 2751 if (ssl)
2752 SSL_clear_chain_certs(ssl);
2753 else
2754 SSL_CTX_clear_chain_certs(data->ssl);
de2a7b79
JM		 2755 while ((cert = sk_X509_pop(certs)) != NULL) {
2756 X509_NAME_oneline(X509_get_subject_name(cert), buf,
2757 sizeof(buf));
2758 wpa_printf(MSG_DEBUG, "TLS: additional certificate"
2759 " from PKCS12: subject='%s'", buf);
dda091cf
AB		 2760 if ((ssl && SSL_add1_chain_cert(ssl, cert) != 1) ||
2761 (!ssl && SSL_CTX_add1_chain_cert(data->ssl,
2762 cert) != 1)) {
20f331b7
JM		 2763 tls_show_errors(MSG_DEBUG, __func__,
2764 "Failed to add additional certificate");
de2a7b79 2765 res = -1;
8bcf8de8 2766 X509_free(cert);
de2a7b79
JM		 2767 break;
2768 }
8bcf8de8 2769 X509_free(cert);
de2a7b79 2770 }
20f331b7
JM		 2771 if (!res) {
2772 /* Try to continue anyway */
2773 }
8bcf8de8 2774 sk_X509_pop_free(certs, X509_free);
226cdea6 2775#ifndef OPENSSL_IS_BORINGSSL
dda091cf
AB		 2776 if (ssl)
2777 res = SSL_build_cert_chain(
2778 ssl,
2779 SSL_BUILD_CHAIN_FLAG_CHECK |
2780 SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR);
2781 else
2782 res = SSL_CTX_build_cert_chain(
2783 data->ssl,
2784 SSL_BUILD_CHAIN_FLAG_CHECK |
2785 SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR);
de2a7b79
JM		 2786 if (!res) {
2787 tls_show_errors(MSG_DEBUG, __func__,
2788 "Failed to build certificate chain");
2789 } else if (res == 2) {
2790 wpa_printf(MSG_DEBUG,
2791 "TLS: Ignore certificate chain verification error when building chain with PKCS#12 extra certificates");
2792 }
226cdea6 2793#endif /* OPENSSL_IS_BORINGSSL */
de2a7b79
JM		 2794 /*
2795 * Try to continue regardless of result since it is possible for
2796 * the extra certificates not to be required.
2797 */
2798 res = 0;
2799#else /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
bd9b8b2b 2800 SSL_CTX_clear_extra_chain_certs(data->ssl);
6fc6879b
JM		 2801 while ((cert = sk_X509_pop(certs)) != NULL) {
2802 X509_NAME_oneline(X509_get_subject_name(cert), buf,
2803 sizeof(buf));
2804 wpa_printf(MSG_DEBUG, "TLS: additional certificate"
2805 " from PKCS12: subject='%s'", buf);
2806 /*
2807 * There is no SSL equivalent for the chain cert - so
2808 * always add it to the context...
2809 */
bd9b8b2b
JM		 2810 if (SSL_CTX_add_extra_chain_cert(data->ssl, cert) != 1)
2811 {
8bcf8de8 2812 X509_free(cert);
6fc6879b
JM		 2813 res = -1;
2814 break;
2815 }
2816 }
8bcf8de8 2817 sk_X509_pop_free(certs, X509_free);
de2a7b79 2818#endif /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
6fc6879b
JM		 2819 }
2820
2821 PKCS12_free(p12);
2822
2823 if (res < 0)
bd9b8b2b 2824 tls_get_errors(data);
6fc6879b
JM		 2825
2826 return res;
2827}
2828#endif /* PKCS12_FUNCS */
2829
2830
bd9b8b2b
JM		 2831static int tls_read_pkcs12(struct tls_data *data, SSL *ssl,
2832 const char *private_key, const char *passwd)
6fc6879b
JM		 2833{
2834#ifdef PKCS12_FUNCS
2835 FILE *f;
2836 PKCS12 *p12;
2837
2838 f = fopen(private_key, "rb");
2839 if (f == NULL)
2840 return -1;
2841
2842 p12 = d2i_PKCS12_fp(f, NULL);
2843 fclose(f);
2844
2845 if (p12 == NULL) {
2846 tls_show_errors(MSG_INFO, __func__,
2847 "Failed to use PKCS#12 file");
2848 return -1;
2849 }
2850
bd9b8b2b 2851 return tls_parse_pkcs12(data, ssl, p12, passwd);
6fc6879b
JM		 2852
2853#else /* PKCS12_FUNCS */
2854 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
2855 "p12/pfx files");
2856 return -1;
2857#endif /* PKCS12_FUNCS */
2858}
2859
2860
bd9b8b2b 2861static int tls_read_pkcs12_blob(struct tls_data *data, SSL *ssl,
6fc6879b
JM		 2862 const u8 *blob, size_t len, const char *passwd)
2863{
2864#ifdef PKCS12_FUNCS
2865 PKCS12 *p12;
2866
fee31f76 2867 p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len);
6fc6879b
JM		 2868 if (p12 == NULL) {
2869 tls_show_errors(MSG_INFO, __func__,
2870 "Failed to use PKCS#12 blob");
2871 return -1;
2872 }
2873
bd9b8b2b 2874 return tls_parse_pkcs12(data, ssl, p12, passwd);
6fc6879b
JM		 2875
2876#else /* PKCS12_FUNCS */
2877 wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
2878 "p12/pfx blobs");
2879 return -1;
2880#endif /* PKCS12_FUNCS */
2881}
2882
2883
e572cb63 2884#ifndef OPENSSL_NO_ENGINE
e59c91af
DS		 2885static int tls_engine_get_cert(struct tls_connection *conn,
2886 const char *cert_id,
2887 X509 **cert)
2888{
e59c91af
DS		 2889 /* this runs after the private key is loaded so no PIN is required */
2890 struct {
2891 const char *cert_id;
2892 X509 *cert;
2893 } params;
2894 params.cert_id = cert_id;
2895 params.cert = NULL;
2896
2897 if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL",
2898 0, &params, NULL, 1)) {
fd4fb281
MG		 2899 unsigned long err = ERR_get_error();
2900
e59c91af
DS		 2901 wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id"
2902 " '%s' [%s]", cert_id,
fd4fb281
MG		 2903 ERR_error_string(err, NULL));
2904 if (tls_is_pin_error(err))
2905 return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
e59c91af
DS		 2906 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
2907 }
2908 if (!params.cert) {
2909 wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id"
2910 " '%s'", cert_id);
2911 return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
2912 }
2913 *cert = params.cert;
2914 return 0;
e59c91af 2915}
e572cb63 2916#endif /* OPENSSL_NO_ENGINE */
e59c91af
DS		 2917
2918
2919static int tls_connection_engine_client_cert(struct tls_connection *conn,
2920 const char *cert_id)
2921{
2922#ifndef OPENSSL_NO_ENGINE
2923 X509 *cert;
2924
2925 if (tls_engine_get_cert(conn, cert_id, &cert))
2926 return -1;
2927
2928 if (!SSL_use_certificate(conn->ssl, cert)) {
2929 tls_show_errors(MSG_ERROR, __func__,
2930 "SSL_use_certificate failed");
2931 X509_free(cert);
2932 return -1;
2933 }
2934 X509_free(cert);
2935 wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> "
2936 "OK");
2937 return 0;
2938
2939#else /* OPENSSL_NO_ENGINE */
2940 return -1;
2941#endif /* OPENSSL_NO_ENGINE */
2942}
2943
2944
bd9b8b2b 2945static int tls_connection_engine_ca_cert(struct tls_data *data,
e59c91af
DS		 2946 struct tls_connection *conn,
2947 const char *ca_cert_id)
2948{
2949#ifndef OPENSSL_NO_ENGINE
2950 X509 *cert;
bd9b8b2b 2951 SSL_CTX *ssl_ctx = data->ssl;
68ae4773 2952 X509_STORE *store;
e59c91af
DS		 2953
2954 if (tls_engine_get_cert(conn, ca_cert_id, &cert))
2955 return -1;
2956
2957 /* start off the same as tls_connection_ca_cert */
68ae4773
JM		 2958 store = X509_STORE_new();
2959 if (store == NULL) {
e59c91af
DS		 2960 wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
2961 "certificate store", __func__);
2962 X509_free(cert);
2963 return -1;
2964 }
68ae4773
JM		 2965 SSL_CTX_set_cert_store(ssl_ctx, store);
2966 if (!X509_STORE_add_cert(store, cert)) {
e59c91af
DS		 2967 unsigned long err = ERR_peek_error();
2968 tls_show_errors(MSG_WARNING, __func__,
2969 "Failed to add CA certificate from engine "
2970 "to certificate store");
2971 if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2972 ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2973 wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert"
2974 " already in hash table error",
2975 __func__);
2976 } else {
2977 X509_free(cert);
2978 return -1;
2979 }
2980 }
2981 X509_free(cert);
2982 wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
2983 "to certificate store", __func__);
2984 SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
d8858cad
CW		 2985 conn->ca_cert_verify = 1;
2986
e59c91af
DS		 2987 return 0;
2988
2989#else /* OPENSSL_NO_ENGINE */
2990 return -1;
2991#endif /* OPENSSL_NO_ENGINE */
2992}
2993
2994
6fc6879b
JM		 2995static int tls_connection_engine_private_key(struct tls_connection *conn)
2996{
aeeb0bca 2997#if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE)
6fc6879b
JM		 2998 if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
2999 tls_show_errors(MSG_ERROR, __func__,
3000 "ENGINE: cannot use private key for TLS");
3001 return -1;
3002 }
3003 if (!SSL_check_private_key(conn->ssl)) {
3004 tls_show_errors(MSG_INFO, __func__,
3005 "Private key failed verification");
3006 return -1;
3007 }
3008 return 0;
3009#else /* OPENSSL_NO_ENGINE */
3010 wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
3011 "engine support was not compiled in");
3012 return -1;
3013#endif /* OPENSSL_NO_ENGINE */
3014}
3015
3016
89971d8b
JM		 3017static void tls_clear_default_passwd_cb(SSL_CTX *ssl_ctx, SSL *ssl)
3018{
7721fe08
JM		 3019#if OPENSSL_VERSION_NUMBER >= 0x10100000L
3020#ifndef LIBRESSL_VERSION_NUMBER
3021#ifndef OPENSSL_IS_BORINGSSL
89971d8b
JM		 3022 if (ssl) {
3023 SSL_set_default_passwd_cb(ssl, NULL);
3024 SSL_set_default_passwd_cb_userdata(ssl, NULL);
3025 }
7721fe08
JM		 3026#endif /* !BoringSSL */
3027#endif /* !LibreSSL */
3028#endif /* >= 1.1.0f */
89971d8b
JM		 3029 SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
3030 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, NULL);
3031}
3032
3033
bd9b8b2b 3034static int tls_connection_private_key(struct tls_data *data,
6fc6879b
JM		 3035 struct tls_connection *conn,
3036 const char *private_key,
3037 const char *private_key_passwd,
3038 const u8 *private_key_blob,
3039 size_t private_key_blob_len)
3040{
bd9b8b2b 3041 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 3042 int ok;
3043
3044 if (private_key == NULL && private_key_blob == NULL)
3045 return 0;
3046
7721fe08
JM		 3047#if OPENSSL_VERSION_NUMBER >= 0x10100000L
3048#ifndef LIBRESSL_VERSION_NUMBER
3049#ifndef OPENSSL_IS_BORINGSSL
f665c93e
BG		 3050 /*
3051 * In OpenSSL >= 1.1.0f SSL_use_PrivateKey_file() uses the callback
3052 * from the SSL object. See OpenSSL commit d61461a75253.
3053 */
3054 SSL_set_default_passwd_cb(conn->ssl, tls_passwd_cb);
149143e3
DB		 3055 SSL_set_default_passwd_cb_userdata(conn->ssl,
3056 (void *) private_key_passwd);
7721fe08
JM		 3057#endif /* !BoringSSL */
3058#endif /* !LibreSSL */
3059#endif /* >= 1.1.0f && */
f665c93e 3060 /* Keep these for OpenSSL < 1.1.0f */
6fc6879b 3061 SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
149143e3
DB		 3062 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx,
3063 (void *) private_key_passwd);
6fc6879b
JM		 3064
3065 ok = 0;
3066 while (private_key_blob) {
3067 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
3068 (u8 *) private_key_blob,
3069 private_key_blob_len) == 1) {
3070 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
3071 "ASN1(EVP_PKEY_RSA) --> OK");
3072 ok = 1;
3073 break;
6fc6879b
JM		 3074 }
3075
3076 if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
3077 (u8 *) private_key_blob,
3078 private_key_blob_len) == 1) {
3079 wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
3080 "ASN1(EVP_PKEY_DSA) --> OK");
3081 ok = 1;
3082 break;
6fc6879b
JM		 3083 }
3084
3085 if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
3086 (u8 *) private_key_blob,
3087 private_key_blob_len) == 1) {
3088 wpa_printf(MSG_DEBUG, "OpenSSL: "
3089 "SSL_use_RSAPrivateKey_ASN1 --> OK");
3090 ok = 1;
3091 break;
6fc6879b
JM		 3092 }
3093
bd9b8b2b 3094 if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob,
149143e3
DB		 3095 private_key_blob_len,
3096 private_key_passwd) == 0) {
6fc6879b
JM		 3097 wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
3098 "OK");
3099 ok = 1;
3100 break;
3101 }
3102
3103 break;
3104 }
3105
3106 while (!ok && private_key) {
3107#ifndef OPENSSL_NO_STDIO
3108 if (SSL_use_PrivateKey_file(conn->ssl, private_key,
3109 SSL_FILETYPE_ASN1) == 1) {
3110 wpa_printf(MSG_DEBUG, "OpenSSL: "
3111 "SSL_use_PrivateKey_File (DER) --> OK");
3112 ok = 1;
3113 break;
6fc6879b
JM		 3114 }
3115
3116 if (SSL_use_PrivateKey_file(conn->ssl, private_key,
3117 SSL_FILETYPE_PEM) == 1) {
3118 wpa_printf(MSG_DEBUG, "OpenSSL: "
3119 "SSL_use_PrivateKey_File (PEM) --> OK");
3120 ok = 1;
3121 break;
6fc6879b
JM		 3122 }
3123#else /* OPENSSL_NO_STDIO */
3124 wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
3125 __func__);
3126#endif /* OPENSSL_NO_STDIO */
3127
149143e3
DB		 3128 if (tls_read_pkcs12(data, conn->ssl, private_key,
3129 private_key_passwd) == 0) {
6fc6879b
JM		 3130 wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
3131 "--> OK");
3132 ok = 1;
3133 break;
3134 }
3135
3136 if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
3137 wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
3138 "access certificate store --> OK");
3139 ok = 1;
3140 break;
3141 }
3142
3143 break;
3144 }
3145
3146 if (!ok) {
effab86f
JM		 3147 tls_show_errors(MSG_INFO, __func__,
3148 "Failed to load private key");
89971d8b 3149 tls_clear_default_passwd_cb(ssl_ctx, conn->ssl);
6fc6879b
JM		 3150 return -1;
3151 }
3152 ERR_clear_error();
89971d8b 3153 tls_clear_default_passwd_cb(ssl_ctx, conn->ssl);
55651a4b 3154
6fc6879b
JM		 3155 if (!SSL_check_private_key(conn->ssl)) {
3156 tls_show_errors(MSG_INFO, __func__, "Private key failed "
3157 "verification");
3158 return -1;
3159 }
3160
3161 wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
3162 return 0;
3163}
3164
3165
bd9b8b2b
JM		 3166static int tls_global_private_key(struct tls_data *data,
3167 const char *private_key,
6fc6879b
JM		 3168 const char *private_key_passwd)
3169{
bd9b8b2b 3170 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 3171
3172 if (private_key == NULL)
3173 return 0;
3174
6fc6879b 3175 SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
149143e3
DB		 3176 SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx,
3177 (void *) private_key_passwd);
6fc6879b
JM		 3178 if (
3179#ifndef OPENSSL_NO_STDIO
3180 SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
3181 SSL_FILETYPE_ASN1) != 1 &&
3182 SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
3183 SSL_FILETYPE_PEM) != 1 &&
3184#endif /* OPENSSL_NO_STDIO */
149143e3 3185 tls_read_pkcs12(data, NULL, private_key, private_key_passwd)) {
6fc6879b
JM		 3186 tls_show_errors(MSG_INFO, __func__,
3187 "Failed to load private key");
89971d8b 3188 tls_clear_default_passwd_cb(ssl_ctx, NULL);
6fc6879b
JM		 3189 ERR_clear_error();
3190 return -1;
3191 }
89971d8b 3192 tls_clear_default_passwd_cb(ssl_ctx, NULL);
6fc6879b 3193 ERR_clear_error();
55651a4b 3194
6fc6879b
JM		 3195 if (!SSL_CTX_check_private_key(ssl_ctx)) {
3196 tls_show_errors(MSG_INFO, __func__,
3197 "Private key failed verification");
3198 return -1;
3199 }
3200
3201 return 0;
3202}
3203
3204
3205static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
3206{
3207#ifdef OPENSSL_NO_DH
3208 if (dh_file == NULL)
3209 return 0;
3210 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
3211 "dh_file specified");
3212 return -1;
3213#else /* OPENSSL_NO_DH */
3214 DH *dh;
3215 BIO *bio;
3216
3217 /* TODO: add support for dh_blob */
3218 if (dh_file == NULL)
3219 return 0;
3220 if (conn == NULL)
3221 return -1;
3222
3223 bio = BIO_new_file(dh_file, "r");
3224 if (bio == NULL) {
3225 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
3226 dh_file, ERR_error_string(ERR_get_error(), NULL));
3227 return -1;
3228 }
3229 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
3230 BIO_free(bio);
3231#ifndef OPENSSL_NO_DSA
3232 while (dh == NULL) {
3233 DSA *dsa;
3234 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
3235 " trying to parse as DSA params", dh_file,
3236 ERR_error_string(ERR_get_error(), NULL));
3237 bio = BIO_new_file(dh_file, "r");
3238 if (bio == NULL)
3239 break;
3240 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
3241 BIO_free(bio);
3242 if (!dsa) {
3243 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
3244 "'%s': %s", dh_file,
3245 ERR_error_string(ERR_get_error(), NULL));
3246 break;
3247 }
3248
3249 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
3250 dh = DSA_dup_DH(dsa);
3251 DSA_free(dsa);
3252 if (dh == NULL) {
3253 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
3254 "params into DH params");
3255 break;
3256 }
3257 break;
3258 }
3259#endif /* !OPENSSL_NO_DSA */
3260 if (dh == NULL) {
3261 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
3262 "'%s'", dh_file);
3263 return -1;
3264 }
3265
3266 if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
3267 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
3268 "%s", dh_file,
3269 ERR_error_string(ERR_get_error(), NULL));
3270 DH_free(dh);
3271 return -1;
3272 }
3273 DH_free(dh);
3274 return 0;
3275#endif /* OPENSSL_NO_DH */
3276}
3277
3278
bd9b8b2b 3279static int tls_global_dh(struct tls_data *data, const char *dh_file)
6fc6879b
JM		 3280{
3281#ifdef OPENSSL_NO_DH
3282 if (dh_file == NULL)
3283 return 0;
3284 wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
3285 "dh_file specified");
3286 return -1;
3287#else /* OPENSSL_NO_DH */
bd9b8b2b 3288 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 3289 DH *dh;
3290 BIO *bio;
3291
3292 /* TODO: add support for dh_blob */
3293 if (dh_file == NULL)
3294 return 0;
3295 if (ssl_ctx == NULL)
3296 return -1;
3297
3298 bio = BIO_new_file(dh_file, "r");
3299 if (bio == NULL) {
3300 wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
3301 dh_file, ERR_error_string(ERR_get_error(), NULL));
3302 return -1;
3303 }
3304 dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
3305 BIO_free(bio);
3306#ifndef OPENSSL_NO_DSA
3307 while (dh == NULL) {
3308 DSA *dsa;
3309 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
3310 " trying to parse as DSA params", dh_file,
3311 ERR_error_string(ERR_get_error(), NULL));
3312 bio = BIO_new_file(dh_file, "r");
3313 if (bio == NULL)
3314 break;
3315 dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
3316 BIO_free(bio);
3317 if (!dsa) {
3318 wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
3319 "'%s': %s", dh_file,
3320 ERR_error_string(ERR_get_error(), NULL));
3321 break;
3322 }
3323
3324 wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
3325 dh = DSA_dup_DH(dsa);
3326 DSA_free(dsa);
3327 if (dh == NULL) {
3328 wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
3329 "params into DH params");
3330 break;
3331 }
3332 break;
3333 }
3334#endif /* !OPENSSL_NO_DSA */
3335 if (dh == NULL) {
3336 wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
3337 "'%s'", dh_file);
3338 return -1;
3339 }
3340
3341 if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) {
3342 wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
3343 "%s", dh_file,
3344 ERR_error_string(ERR_get_error(), NULL));
3345 DH_free(dh);
3346 return -1;
3347 }
3348 DH_free(dh);
3349 return 0;
3350#endif /* OPENSSL_NO_DH */
3351}
3352
3353
1046db8b
JM		 3354int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn,
3355 struct tls_random *keys)
6fc6879b
JM		 3356{
3357 SSL *ssl;
3358
3359 if (conn == NULL || keys == NULL)
3360 return -1;
3361 ssl = conn->ssl;
005c5dcf
JM		 3362 if (ssl == NULL)
3363 return -1;
3364
3365 os_memset(keys, 0, sizeof(*keys));
3366 keys->client_random = conn->client_random;
3367 keys->client_random_len = SSL_get_client_random(
3368 ssl, conn->client_random, sizeof(conn->client_random));
3369 keys->server_random = conn->server_random;
3370 keys->server_random_len = SSL_get_server_random(
3371 ssl, conn->server_random, sizeof(conn->server_random));
6fc6879b
JM		 3372
3373 return 0;
3374}
3375
3376
1cece2fa 3377#ifdef OPENSSL_NEED_EAP_FAST_PRF
af851914
JM		 3378static int openssl_get_keyblock_size(SSL *ssl)
3379{
36e82060 3380#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
af851914
JM		 3381 const EVP_CIPHER *c;
3382 const EVP_MD *h;
3383 int md_size;
3384
3385 if (ssl->enc_read_ctx == NULL || ssl->enc_read_ctx->cipher == NULL ||
3386 ssl->read_hash == NULL)
3387 return -1;
3388
3389 c = ssl->enc_read_ctx->cipher;
af851914 3390 h = EVP_MD_CTX_md(ssl->read_hash);
af851914
JM		 3391 if (h)
3392 md_size = EVP_MD_size(h);
af851914
JM		 3393 else if (ssl->s3)
3394 md_size = ssl->s3->tmp.new_mac_secret_size;
af851914
JM		 3395 else
3396 return -1;
3397
3398 wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d "
3399 "IV_len=%d", EVP_CIPHER_key_length(c), md_size,
3400 EVP_CIPHER_iv_length(c));
3401 return 2 * (EVP_CIPHER_key_length(c) +
3402 md_size +
3403 EVP_CIPHER_iv_length(c));
3de28506
JM		 3404#else
3405 const SSL_CIPHER *ssl_cipher;
3406 int cipher, digest;
3407 const EVP_CIPHER *c;
3408 const EVP_MD *h;
3409
3410 ssl_cipher = SSL_get_current_cipher(ssl);
3411 if (!ssl_cipher)
3412 return -1;
3413 cipher = SSL_CIPHER_get_cipher_nid(ssl_cipher);
3414 digest = SSL_CIPHER_get_digest_nid(ssl_cipher);
3415 wpa_printf(MSG_DEBUG, "OpenSSL: cipher nid %d digest nid %d",
3416 cipher, digest);
3417 if (cipher < 0 || digest < 0)
3418 return -1;
3419 c = EVP_get_cipherbynid(cipher);
3420 h = EVP_get_digestbynid(digest);
3421 if (!c || !h)
3422 return -1;
3423
3424 wpa_printf(MSG_DEBUG,
3425 "OpenSSL: keyblock size: key_len=%d MD_size=%d IV_len=%d",
3426 EVP_CIPHER_key_length(c), EVP_MD_size(h),
3427 EVP_CIPHER_iv_length(c));
3428 return 2 * (EVP_CIPHER_key_length(c) + EVP_MD_size(h) +
3429 EVP_CIPHER_iv_length(c));
3430#endif
af851914 3431}
1cece2fa 3432#endif /* OPENSSL_NEED_EAP_FAST_PRF */
af851914
JM		 3433
3434
73581707
DB		 3435int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn,
3436 const char *label, u8 *out, size_t out_len)
3437{
3438 if (!conn ||
3439 SSL_export_keying_material(conn->ssl, out, out_len, label,
3440 os_strlen(label), NULL, 0, 0) != 1)
3441 return -1;
3442 return 0;
3443}
3444
3445
3446int tls_connection_get_eap_fast_key(void *tls_ctx, struct tls_connection *conn,
3447 u8 *out, size_t out_len)
fa0e7151 3448{
1cece2fa 3449#ifdef OPENSSL_NEED_EAP_FAST_PRF
3de28506
JM		 3450 SSL *ssl;
3451 SSL_SESSION *sess;
3452 u8 *rnd;
3453 int ret = -1;
3454 int skip = 0;
3455 u8 *tmp_out = NULL;
3456 u8 *_out = out;
3457 unsigned char client_random[SSL3_RANDOM_SIZE];
3458 unsigned char server_random[SSL3_RANDOM_SIZE];
3459 unsigned char master_key[64];
3460 size_t master_key_len;
16bc3b89 3461 const char *ver;
3de28506
JM		 3462
3463 /*
73581707
DB		 3464 * TLS library did not support EAP-FAST key generation, so get the
3465 * needed TLS session parameters and use an internal implementation of
3466 * TLS PRF to derive the key.
3de28506
JM		 3467 */
3468
3469 if (conn == NULL)
3470 return -1;
3471 ssl = conn->ssl;
3472 if (ssl == NULL)
3473 return -1;
16bc3b89 3474 ver = SSL_get_version(ssl);
3de28506 3475 sess = SSL_get_session(ssl);
16bc3b89 3476 if (!ver || !sess)
3de28506
JM		 3477 return -1;
3478
73581707
DB		 3479 skip = openssl_get_keyblock_size(ssl);
3480 if (skip < 0)
3481 return -1;
3482 tmp_out = os_malloc(skip + out_len);
3483 if (!tmp_out)
3484 return -1;
3485 _out = tmp_out;
3de28506
JM		 3486
3487 rnd = os_malloc(2 * SSL3_RANDOM_SIZE);
3488 if (!rnd) {
3489 os_free(tmp_out);
3490 return -1;
3491 }
3492
3493 SSL_get_client_random(ssl, client_random, sizeof(client_random));
3494 SSL_get_server_random(ssl, server_random, sizeof(server_random));
3495 master_key_len = SSL_SESSION_get_master_key(sess, master_key,
3496 sizeof(master_key));
3497
73581707
DB		 3498 os_memcpy(rnd, server_random, SSL3_RANDOM_SIZE);
3499 os_memcpy(rnd + SSL3_RANDOM_SIZE, client_random, SSL3_RANDOM_SIZE);
3de28506 3500
16bc3b89
JM		 3501 if (os_strcmp(ver, "TLSv1.2") == 0) {
3502 tls_prf_sha256(master_key, master_key_len,
73581707 3503 "key expansion", rnd, 2 * SSL3_RANDOM_SIZE,
16bc3b89 3504 _out, skip + out_len);
3de28506 3505 ret = 0;
16bc3b89 3506 } else if (tls_prf_sha1_md5(master_key, master_key_len,
73581707 3507 "key expansion", rnd, 2 * SSL3_RANDOM_SIZE,
16bc3b89
JM		 3508 _out, skip + out_len) == 0) {
3509 ret = 0;
3510 }
3de28506
JM		 3511 os_memset(master_key, 0, sizeof(master_key));
3512 os_free(rnd);
73581707 3513 if (ret == 0)
3de28506
JM		 3514 os_memcpy(out, _out + skip, out_len);
3515 bin_clear_free(tmp_out, skip);
3516
3517 return ret;
1cece2fa
DB		 3518#else /* OPENSSL_NEED_EAP_FAST_PRF */
3519 wpa_printf(MSG_ERROR,
3520 "OpenSSL: EAP-FAST keys cannot be exported in FIPS mode");
3521 return -1;
3522#endif /* OPENSSL_NEED_EAP_FAST_PRF */
fa0e7151
JM		 3523}
3524
3525
81c85c06
JM		 3526static struct wpabuf *
3527openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data,
3528 int server)
6fc6879b
JM		 3529{
3530 int res;
81c85c06 3531 struct wpabuf *out_data;
6fc6879b
JM		 3532
3533 /*
3534 * Give TLS handshake data from the server (if available) to OpenSSL
3535 * for processing.
3536 */
e9690eb7 3537 if (in_data && wpabuf_len(in_data) > 0 &&
81c85c06
JM		 3538 BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data))
3539 < 0) {
6fc6879b
JM		 3540 tls_show_errors(MSG_INFO, __func__,
3541 "Handshake failed - BIO_write");
3542 return NULL;
3543 }
3544
3545 /* Initiate TLS handshake or continue the existing handshake */
81c85c06
JM		 3546 if (server)
3547 res = SSL_accept(conn->ssl);
3548 else
3549 res = SSL_connect(conn->ssl);
6fc6879b
JM		 3550 if (res != 1) {
3551 int err = SSL_get_error(conn->ssl, res);
3552 if (err == SSL_ERROR_WANT_READ)
3553 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
3554 "more data");
3555 else if (err == SSL_ERROR_WANT_WRITE)
3556 wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
3557 "write");
3558 else {
3559 tls_show_errors(MSG_INFO, __func__, "SSL_connect");
3560 conn->failed++;
3561 }
3562 }
3563
1c9663cf
JM		 3564#ifdef CONFIG_SUITEB
3565 if ((conn->flags & TLS_CONN_SUITEB) && !server &&
3566 os_strncmp(SSL_get_cipher(conn->ssl), "DHE-", 4) == 0 &&
3567 conn->server_dh_prime_len < 3072) {
3568 struct tls_context *context = conn->context;
3569
3570 /*
3571 * This should not be reached since earlier cert_cb should have
3572 * terminated the handshake. Keep this check here for extra
3573 * protection if anything goes wrong with the more low-level
3574 * checks based on having to parse the TLS handshake messages.
3575 */
3576 wpa_printf(MSG_DEBUG,
3577 "OpenSSL: Server DH prime length: %d bits",
3578 conn->server_dh_prime_len);
3579
3580 if (context->event_cb) {
3581 union tls_event_data ev;
3582
3583 os_memset(&ev, 0, sizeof(ev));
3584 ev.alert.is_local = 1;
3585 ev.alert.type = "fatal";
3586 ev.alert.description = "insufficient security";
3587 context->event_cb(context->cb_ctx, TLS_ALERT, &ev);
3588 }
3589 /*
3590 * Could send a TLS Alert to the server, but for now, simply
3591 * terminate handshake.
3592 */
3593 conn->failed++;
3594 conn->write_alerts++;
3595 return NULL;
3596 }
3597#endif /* CONFIG_SUITEB */
3598
6fc6879b
JM		 3599 /* Get the TLS handshake data to be sent to the server */
3600 res = BIO_ctrl_pending(conn->ssl_out);
3601 wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
81c85c06 3602 out_data = wpabuf_alloc(res);
6fc6879b
JM		 3603 if (out_data == NULL) {
3604 wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
3605 "handshake output (%d bytes)", res);
3606 if (BIO_reset(conn->ssl_out) < 0) {
3607 tls_show_errors(MSG_INFO, __func__,
3608 "BIO_reset failed");
3609 }
6fc6879b
JM		 3610 return NULL;
3611 }
81c85c06
JM		 3612 res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data),
3613 res);
6fc6879b
JM		 3614 if (res < 0) {
3615 tls_show_errors(MSG_INFO, __func__,
3616 "Handshake failed - BIO_read");
3617 if (BIO_reset(conn->ssl_out) < 0) {
3618 tls_show_errors(MSG_INFO, __func__,
3619 "BIO_reset failed");
3620 }
81c85c06 3621 wpabuf_free(out_data);
6fc6879b
JM		 3622 return NULL;
3623 }
81c85c06 3624 wpabuf_put(out_data, res);
6fc6879b
JM		 3625
3626 return out_data;
3627}
3628
3629
81c85c06
JM		 3630static struct wpabuf *
3631openssl_get_appl_data(struct tls_connection *conn, size_t max_len)
6fc6879b 3632{
81c85c06 3633 struct wpabuf *appl_data;
6fc6879b 3634 int res;
6fc6879b 3635
81c85c06
JM		 3636 appl_data = wpabuf_alloc(max_len + 100);
3637 if (appl_data == NULL)
6fc6879b 3638 return NULL;
6fc6879b 3639
81c85c06
JM		 3640 res = SSL_read(conn->ssl, wpabuf_mhead(appl_data),
3641 wpabuf_size(appl_data));
3642 if (res < 0) {
bf206cad 3643 int err = SSL_get_error(conn->ssl, res);
81c85c06
JM		 3644 if (err == SSL_ERROR_WANT_READ ||
3645 err == SSL_ERROR_WANT_WRITE) {
3646 wpa_printf(MSG_DEBUG, "SSL: No Application Data "
3647 "included");
3648 } else {
6fc6879b 3649 tls_show_errors(MSG_INFO, __func__,
81c85c06
JM		 3650 "Failed to read possible "
3651 "Application Data");
6fc6879b 3652 }
81c85c06 3653 wpabuf_free(appl_data);
6fc6879b
JM		 3654 return NULL;
3655 }
81c85c06
JM		 3656
3657 wpabuf_put(appl_data, res);
3658 wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished "
3659 "message", appl_data);
3660
3661 return appl_data;
3662}
3663
3664
3665static struct wpabuf *
3666openssl_connection_handshake(struct tls_connection *conn,
3667 const struct wpabuf *in_data,
3668 struct wpabuf **appl_data, int server)
3669{
3670 struct wpabuf *out_data;
3671
3672 if (appl_data)
3673 *appl_data = NULL;
3674
3675 out_data = openssl_handshake(conn, in_data, server);
3676 if (out_data == NULL)
6fc6879b 3677 return NULL;
bb52293e
JM		 3678 if (conn->invalid_hb_used) {
3679 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
3680 wpabuf_free(out_data);
3681 return NULL;
3682 }
81c85c06 3683
a89beee5
JM		 3684 if (SSL_is_init_finished(conn->ssl)) {
3685 wpa_printf(MSG_DEBUG,
3686 "OpenSSL: Handshake finished - resumed=%d",
3687 tls_connection_resumed(conn->ssl_ctx, conn));
3688 if (appl_data && in_data)
3689 *appl_data = openssl_get_appl_data(conn,
3690 wpabuf_len(in_data));
3691 }
81c85c06 3692
bb52293e
JM		 3693 if (conn->invalid_hb_used) {
3694 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
3695 if (appl_data) {
3696 wpabuf_free(*appl_data);
3697 *appl_data = NULL;
3698 }
3699 wpabuf_free(out_data);
3700 return NULL;
3701 }
3702
6fc6879b
JM		 3703 return out_data;
3704}
3705
3706
81c85c06
JM		 3707struct wpabuf *
3708tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
3709 const struct wpabuf *in_data,
3710 struct wpabuf **appl_data)
3711{
3712 return openssl_connection_handshake(conn, in_data, appl_data, 0);
3713}
3714
3715
3716struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
3717 struct tls_connection *conn,
3718 const struct wpabuf *in_data,
3719 struct wpabuf **appl_data)
3720{
3721 return openssl_connection_handshake(conn, in_data, appl_data, 1);
3722}
3723
3724
3725struct wpabuf * tls_connection_encrypt(void *tls_ctx,
3726 struct tls_connection *conn,
3727 const struct wpabuf *in_data)
6fc6879b
JM		 3728{
3729 int res;
81c85c06 3730 struct wpabuf *buf;
6fc6879b
JM		 3731
3732 if (conn == NULL)
81c85c06 3733 return NULL;
6fc6879b
JM		 3734
3735 /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
3736 if ((res = BIO_reset(conn->ssl_in)) < 0 ||
3737 (res = BIO_reset(conn->ssl_out)) < 0) {
3738 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
81c85c06 3739 return NULL;
6fc6879b 3740 }
81c85c06 3741 res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data));
6fc6879b
JM		 3742 if (res < 0) {
3743 tls_show_errors(MSG_INFO, __func__,
3744 "Encryption failed - SSL_write");
81c85c06 3745 return NULL;
6fc6879b
JM		 3746 }
3747
3748 /* Read encrypted data to be sent to the server */
81c85c06
JM		 3749 buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
3750 if (buf == NULL)
3751 return NULL;
3752 res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf));
6fc6879b
JM		 3753 if (res < 0) {
3754 tls_show_errors(MSG_INFO, __func__,
3755 "Encryption failed - BIO_read");
81c85c06
JM		 3756 wpabuf_free(buf);
3757 return NULL;
6fc6879b 3758 }
81c85c06 3759 wpabuf_put(buf, res);
6fc6879b 3760
81c85c06 3761 return buf;
6fc6879b
JM		 3762}
3763
3764
81c85c06
JM		 3765struct wpabuf * tls_connection_decrypt(void *tls_ctx,
3766 struct tls_connection *conn,
3767 const struct wpabuf *in_data)
6fc6879b
JM		 3768{
3769 int res;
81c85c06 3770 struct wpabuf *buf;
6fc6879b
JM		 3771
3772 /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
81c85c06
JM		 3773 res = BIO_write(conn->ssl_in, wpabuf_head(in_data),
3774 wpabuf_len(in_data));
6fc6879b
JM		 3775 if (res < 0) {
3776 tls_show_errors(MSG_INFO, __func__,
3777 "Decryption failed - BIO_write");
81c85c06 3778 return NULL;
6fc6879b
JM		 3779 }
3780 if (BIO_reset(conn->ssl_out) < 0) {
3781 tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
81c85c06 3782 return NULL;
6fc6879b
JM		 3783 }
3784
3785 /* Read decrypted data for further processing */
81c85c06
JM		 3786 /*
3787 * Even though we try to disable TLS compression, it is possible that
3788 * this cannot be done with all TLS libraries. Add extra buffer space
3789 * to handle the possibility of the decrypted data being longer than
3790 * input data.
3791 */
3792 buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
3793 if (buf == NULL)
3794 return NULL;
3795 res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
6fc6879b
JM		 3796 if (res < 0) {
3797 tls_show_errors(MSG_INFO, __func__,
3798 "Decryption failed - SSL_read");
a86a7316 3799 wpabuf_free(buf);
81c85c06 3800 return NULL;
6fc6879b 3801 }
81c85c06 3802 wpabuf_put(buf, res);
6fc6879b 3803
bb52293e
JM		 3804 if (conn->invalid_hb_used) {
3805 wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
3806 wpabuf_free(buf);
3807 return NULL;
3808 }
3809
81c85c06 3810 return buf;
6fc6879b
JM		 3811}
3812
3813
3814int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
3815{
db3168d4 3816 return conn ? SSL_cache_hit(conn->ssl) : 0;
6fc6879b
JM		 3817}
3818
3819
3820int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
3821 u8 *ciphers)
3822{
750f5d99 3823 char buf[500], *pos, *end;
6fc6879b
JM		 3824 u8 *c;
3825 int ret;
3826
3827 if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
3828 return -1;
3829
3830 buf[0] = '\0';
3831 pos = buf;
3832 end = pos + sizeof(buf);
3833
3834 c = ciphers;
3835 while (*c != TLS_CIPHER_NONE) {
3836 const char *suite;
3837
3838 switch (*c) {
3839 case TLS_CIPHER_RC4_SHA:
3840 suite = "RC4-SHA";
3841 break;
3842 case TLS_CIPHER_AES128_SHA:
3843 suite = "AES128-SHA";
3844 break;
3845 case TLS_CIPHER_RSA_DHE_AES128_SHA:
3846 suite = "DHE-RSA-AES128-SHA";
3847 break;
3848 case TLS_CIPHER_ANON_DH_AES128_SHA:
3849 suite = "ADH-AES128-SHA";
3850 break;
750f5d99
JM		 3851 case TLS_CIPHER_RSA_DHE_AES256_SHA:
3852 suite = "DHE-RSA-AES256-SHA";
3853 break;
3854 case TLS_CIPHER_AES256_SHA:
3855 suite = "AES256-SHA";
3856 break;
6fc6879b
JM		 3857 default:
3858 wpa_printf(MSG_DEBUG, "TLS: Unsupported "
3859 "cipher selection: %d", *c);
3860 return -1;
3861 }
3862 ret = os_snprintf(pos, end - pos, ":%s", suite);
d85e1fc8 3863 if (os_snprintf_error(end - pos, ret))
6fc6879b
JM		 3864 break;
3865 pos += ret;
3866
3867 c++;
3868 }
3869
3870 wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
3871
36e82060 3872#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
c34cd668
JM		 3873#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3874 if (os_strstr(buf, ":ADH-")) {
3875 /*
3876 * Need to drop to security level 0 to allow anonymous
3877 * cipher suites for EAP-FAST.
3878 */
3879 SSL_set_security_level(conn->ssl, 0);
3880 } else if (SSL_get_security_level(conn->ssl) == 0) {
3881 /* Force at least security level 1 */
3882 SSL_set_security_level(conn->ssl, 1);
3883 }
3884#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3885#endif
3886
6fc6879b
JM		 3887 if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
3888 tls_show_errors(MSG_INFO, __func__,
3889 "Cipher suite configuration failed");
3890 return -1;
3891 }
3892
3893 return 0;
3894}
3895
3896
fe1bf329
JM		 3897int tls_get_version(void *ssl_ctx, struct tls_connection *conn,
3898 char *buf, size_t buflen)
3899{
3900 const char *name;
3901 if (conn == NULL || conn->ssl == NULL)
3902 return -1;
3903
3904 name = SSL_get_version(conn->ssl);
3905 if (name == NULL)
3906 return -1;
3907
3908 os_strlcpy(buf, name, buflen);
3909 return 0;
3910}
3911
3912
6fc6879b
JM		 3913int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
3914 char *buf, size_t buflen)
3915{
3916 const char *name;
3917 if (conn == NULL || conn->ssl == NULL)
3918 return -1;
3919
3920 name = SSL_get_cipher(conn->ssl);
3921 if (name == NULL)
3922 return -1;
3923
3924 os_strlcpy(buf, name, buflen);
3925 return 0;
3926}
3927
3928
3929int tls_connection_enable_workaround(void *ssl_ctx,
3930 struct tls_connection *conn)
3931{
3932 SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
3933
3934 return 0;
3935}
3936
3937
1e5839e0 3938#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
6fc6879b
JM		 3939/* ClientHello TLS extensions require a patch to openssl, so this function is
3940 * commented out unless explicitly needed for EAP-FAST in order to be able to
3941 * build this file with unmodified openssl. */
3942int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
3943 int ext_type, const u8 *data,
3944 size_t data_len)
3945{
0cf03892 3946 if (conn == NULL || conn->ssl == NULL || ext_type != 35)
6fc6879b
JM		 3947 return -1;
3948
0cf03892
JM		 3949 if (SSL_set_session_ticket_ext(conn->ssl, (void *) data,
3950 data_len) != 1)
3951 return -1;
6fc6879b
JM		 3952
3953 return 0;
3954}
1e5839e0 3955#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b
JM		 3956
3957
3958int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
3959{
3960 if (conn == NULL)
3961 return -1;
3962 return conn->failed;
3963}
3964
3965
3966int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
3967{
3968 if (conn == NULL)
3969 return -1;
3970 return conn->read_alerts;
3971}
3972
3973
3974int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
3975{
3976 if (conn == NULL)
3977 return -1;
3978 return conn->write_alerts;
3979}
3980
3981
080585c0
JM		 3982#ifdef HAVE_OCSP
3983
3984static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp)
3985{
3986#ifndef CONFIG_NO_STDOUT_DEBUG
080585c0
JM		 3987 BIO *out;
3988 size_t rlen;
3989 char *txt;
3990 int res;
3991
3992 if (wpa_debug_level > MSG_DEBUG)
3993 return;
3994
3995 out = BIO_new(BIO_s_mem());
3996 if (!out)
3997 return;
3998
3999 OCSP_RESPONSE_print(out, rsp, 0);
4000 rlen = BIO_ctrl_pending(out);
4001 txt = os_malloc(rlen + 1);
4002 if (!txt) {
4003 BIO_free(out);
4004 return;
4005 }
4006
4007 res = BIO_read(out, txt, rlen);
4008 if (res > 0) {
4009 txt[res] = '\0';
4010 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt);
4011 }
4012 os_free(txt);
4013 BIO_free(out);
4014#endif /* CONFIG_NO_STDOUT_DEBUG */
4015}
4016
4017
4eb3b76b
JM		 4018static void debug_print_cert(X509 *cert, const char *title)
4019{
4020#ifndef CONFIG_NO_STDOUT_DEBUG
4021 BIO *out;
4022 size_t rlen;
4023 char *txt;
4024 int res;
4025
4026 if (wpa_debug_level > MSG_DEBUG)
4027 return;
4028
4029 out = BIO_new(BIO_s_mem());
4030 if (!out)
4031 return;
4032
4033 X509_print(out, cert);
4034 rlen = BIO_ctrl_pending(out);
4035 txt = os_malloc(rlen + 1);
4036 if (!txt) {
4037 BIO_free(out);
4038 return;
4039 }
4040
4041 res = BIO_read(out, txt, rlen);
4042 if (res > 0) {
4043 txt[res] = '\0';
4044 wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt);
4045 }
4046 os_free(txt);
4047
4048 BIO_free(out);
4049#endif /* CONFIG_NO_STDOUT_DEBUG */
4050}
4051
4052
080585c0
JM		 4053static int ocsp_resp_cb(SSL *s, void *arg)
4054{
4055 struct tls_connection *conn = arg;
4056 const unsigned char *p;
85cff4b0 4057 int len, status, reason, res;
080585c0
JM		 4058 OCSP_RESPONSE *rsp;
4059 OCSP_BASICRESP *basic;
4060 OCSP_CERTID *id;
4061 ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update;
6bf61fb2
JM		 4062 X509_STORE *store;
4063 STACK_OF(X509) *certs = NULL;
080585c0
JM		 4064
4065 len = SSL_get_tlsext_status_ocsp_resp(s, &p);
4066 if (!p) {
4067 wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received");
4068 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
4069 }
4070
4071 wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len);
4072
4073 rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
4074 if (!rsp) {
4075 wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response");
4076 return 0;
4077 }
4078
4079 ocsp_debug_print_resp(rsp);
4080
4081 status = OCSP_response_status(rsp);
4082 if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
4083 wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)",
4084 status, OCSP_response_status_str(status));
4085 return 0;
4086 }
4087
4088 basic = OCSP_response_get1_basic(rsp);
4089 if (!basic) {
4090 wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse");
4091 return 0;
4092 }
4093
68ae4773 4094 store = SSL_CTX_get_cert_store(conn->ssl_ctx);
6bf61fb2 4095 if (conn->peer_issuer) {
4eb3b76b 4096 debug_print_cert(conn->peer_issuer, "Add OCSP issuer");
6bf61fb2
JM		 4097
4098 if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) {
4099 tls_show_errors(MSG_INFO, __func__,
58d405fc 4100 "OpenSSL: Could not add issuer to certificate store");
6bf61fb2
JM		 4101 }
4102 certs = sk_X509_new_null();
4103 if (certs) {
4104 X509 *cert;
4105 cert = X509_dup(conn->peer_issuer);
4106 if (cert && !sk_X509_push(certs, cert)) {
4107 tls_show_errors(
4108 MSG_INFO, __func__,
58d405fc 4109 "OpenSSL: Could not add issuer to OCSP responder trust store");
6bf61fb2
JM		 4110 X509_free(cert);
4111 sk_X509_free(certs);
4112 certs = NULL;
4113 }
710dfb4e 4114 if (certs && conn->peer_issuer_issuer) {
6bf61fb2
JM		 4115 cert = X509_dup(conn->peer_issuer_issuer);
4116 if (cert && !sk_X509_push(certs, cert)) {
4117 tls_show_errors(
4118 MSG_INFO, __func__,
58d405fc 4119 "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
6bf61fb2
JM		 4120 X509_free(cert);
4121 }
4122 }
4123 }
4124 }
4125
4126 status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER);
4127 sk_X509_pop_free(certs, X509_free);
080585c0
JM		 4128 if (status <= 0) {
4129 tls_show_errors(MSG_INFO, __func__,
4130 "OpenSSL: OCSP response failed verification");
4131 OCSP_BASICRESP_free(basic);
4132 OCSP_RESPONSE_free(rsp);
4133 return 0;
4134 }
4135
4136 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded");
4137
762c92a4
JM		 4138 if (!conn->peer_cert) {
4139 wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check");
4140 OCSP_BASICRESP_free(basic);
4141 OCSP_RESPONSE_free(rsp);
4142 return 0;
4143 }
4144
4145 if (!conn->peer_issuer) {
4146 wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check");
080585c0
JM		 4147 OCSP_BASICRESP_free(basic);
4148 OCSP_RESPONSE_free(rsp);
4149 return 0;
4150 }
4151
85cff4b0 4152 id = OCSP_cert_to_id(EVP_sha256(), conn->peer_cert, conn->peer_issuer);
080585c0 4153 if (!id) {
85cff4b0
JM		 4154 wpa_printf(MSG_DEBUG,
4155 "OpenSSL: Could not create OCSP certificate identifier (SHA256)");
080585c0
JM		 4156 OCSP_BASICRESP_free(basic);
4157 OCSP_RESPONSE_free(rsp);
4158 return 0;
4159 }
4160
85cff4b0
JM		 4161 res = OCSP_resp_find_status(basic, id, &status, &reason, &produced_at,
4162 &this_update, &next_update);
4163 if (!res) {
4164 id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer);
4165 if (!id) {
4166 wpa_printf(MSG_DEBUG,
4167 "OpenSSL: Could not create OCSP certificate identifier (SHA1)");
4168 OCSP_BASICRESP_free(basic);
4169 OCSP_RESPONSE_free(rsp);
4170 return 0;
4171 }
4172
4173 res = OCSP_resp_find_status(basic, id, &status, &reason,
4174 &produced_at, &this_update,
4175 &next_update);
4176 }
4177
4178 if (!res) {
080585c0
JM		 4179 wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s",
4180 (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" :
4181 " (OCSP not required)");
d9a0f697 4182 OCSP_CERTID_free(id);
080585c0
JM		 4183 OCSP_BASICRESP_free(basic);
4184 OCSP_RESPONSE_free(rsp);
4185 return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
4186 }
d9a0f697 4187 OCSP_CERTID_free(id);
080585c0
JM		 4188
4189 if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) {
4190 tls_show_errors(MSG_INFO, __func__,
4191 "OpenSSL: OCSP status times invalid");
4192 OCSP_BASICRESP_free(basic);
4193 OCSP_RESPONSE_free(rsp);
4194 return 0;
4195 }
4196
4197 OCSP_BASICRESP_free(basic);
4198 OCSP_RESPONSE_free(rsp);
4199
4200 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s",
4201 OCSP_cert_status_str(status));
4202
4203 if (status == V_OCSP_CERTSTATUS_GOOD)
4204 return 1;
4205 if (status == V_OCSP_CERTSTATUS_REVOKED)
4206 return 0;
4207 if (conn->flags & TLS_CONN_REQUIRE_OCSP) {
4208 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required");
4209 return 0;
4210 }
be7963b3 4211 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue");
080585c0
JM		 4212 return 1;
4213}
4214
4215
4216static int ocsp_status_cb(SSL *s, void *arg)
4217{
4218 char *tmp;
4219 char *resp;
4220 size_t len;
4221
4222 if (tls_global->ocsp_stapling_response == NULL) {
4223 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured");
4224 return SSL_TLSEXT_ERR_OK;
4225 }
4226
4227 resp = os_readfile(tls_global->ocsp_stapling_response, &len);
4228 if (resp == NULL) {
4229 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file");
4230 /* TODO: Build OCSPResponse with responseStatus = internalError
4231 */
4232 return SSL_TLSEXT_ERR_OK;
4233 }
4234 wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response");
4235 tmp = OPENSSL_malloc(len);
4236 if (tmp == NULL) {
4237 os_free(resp);
4238 return SSL_TLSEXT_ERR_ALERT_FATAL;
4239 }
4240
4241 os_memcpy(tmp, resp, len);
4242 os_free(resp);
4243 SSL_set_tlsext_status_ocsp_resp(s, tmp, len);
4244
4245 return SSL_TLSEXT_ERR_OK;
4246}
4247
4248#endif /* HAVE_OCSP */
4249
4250
6fc6879b
JM		 4251int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
4252 const struct tls_connection_params *params)
4253{
bd9b8b2b 4254 struct tls_data *data = tls_ctx;
6fc6879b
JM		 4255 int ret;
4256 unsigned long err;
96955192 4257 int can_pkcs11 = 0;
01b0d1d5
DW		 4258 const char *key_id = params->key_id;
4259 const char *cert_id = params->cert_id;
4260 const char *ca_cert_id = params->ca_cert_id;
96955192 4261 const char *engine_id = params->engine ? params->engine_id : NULL;
6fc6879b
JM		 4262
4263 if (conn == NULL)
4264 return -1;
4265
d6b536f7
JM		 4266 if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) {
4267 wpa_printf(MSG_INFO,
4268 "OpenSSL: ocsp=3 not supported");
4269 return -1;
4270 }
4271
01b0d1d5 4272 /*
96955192
DW		 4273 * If the engine isn't explicitly configured, and any of the
4274 * cert/key fields are actually PKCS#11 URIs, then automatically
4275 * use the PKCS#11 ENGINE.
01b0d1d5 4276 */
96955192
DW		 4277 if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0)
4278 can_pkcs11 = 1;
4279
4280 if (!key_id && params->private_key && can_pkcs11 &&
4281 os_strncmp(params->private_key, "pkcs11:", 7) == 0) {
4282 can_pkcs11 = 2;
01b0d1d5 4283 key_id = params->private_key;
96955192 4284 }
01b0d1d5 4285
96955192
DW		 4286 if (!cert_id && params->client_cert && can_pkcs11 &&
4287 os_strncmp(params->client_cert, "pkcs11:", 7) == 0) {
4288 can_pkcs11 = 2;
01b0d1d5 4289 cert_id = params->client_cert;
96955192 4290 }
01b0d1d5 4291
96955192
DW		 4292 if (!ca_cert_id && params->ca_cert && can_pkcs11 &&
4293 os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) {
4294 can_pkcs11 = 2;
01b0d1d5 4295 ca_cert_id = params->ca_cert;
96955192
DW		 4296 }
4297
4298 /* If we need to automatically enable the PKCS#11 ENGINE, do so. */
4299 if (can_pkcs11 == 2 && !engine_id)
4300 engine_id = "pkcs11";
01b0d1d5 4301
0f56057c 4302#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
b70d508c 4303#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
6a31a31d
JM		 4304 if (params->flags & TLS_CONN_EAP_FAST) {
4305 wpa_printf(MSG_DEBUG,
4306 "OpenSSL: Use TLSv1_method() for EAP-FAST");
4307 if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) {
4308 tls_show_errors(MSG_INFO, __func__,
4309 "Failed to set TLSv1_method() for EAP-FAST");
4310 return -1;
4311 }
4312 }
06836013 4313#endif
0f56057c 4314#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
d4913c58 4315
6fc6879b
JM		 4316 while ((err = ERR_get_error())) {
4317 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
4318 __func__, ERR_error_string(err, NULL));
4319 }
4320
96955192 4321 if (engine_id) {
e59c91af 4322 wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
96955192 4323 ret = tls_engine_init(conn, engine_id, params->pin,
01b0d1d5 4324 key_id, cert_id, ca_cert_id);
e59c91af
DS		 4325 if (ret)
4326 return ret;
4327 }
6fc6879b
JM		 4328 if (tls_connection_set_subject_match(conn,
4329 params->subject_match,
01f809c7 4330 params->altsubject_match,
cebee30f
JM		 4331 params->suffix_match,
4332 params->domain_match))
6fc6879b 4333 return -1;
e59c91af 4334
96955192 4335 if (engine_id && ca_cert_id) {
bd9b8b2b 4336 if (tls_connection_engine_ca_cert(data, conn, ca_cert_id))
e59c91af 4337 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
bd9b8b2b 4338 } else if (tls_connection_ca_cert(data, conn, params->ca_cert,
e59c91af
DS		 4339 params->ca_cert_blob,
4340 params->ca_cert_blob_len,
4341 params->ca_path))
6fc6879b 4342 return -1;
e59c91af 4343
96955192 4344 if (engine_id && cert_id) {
01b0d1d5 4345 if (tls_connection_engine_client_cert(conn, cert_id))
e59c91af
DS		 4346 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
4347 } else if (tls_connection_client_cert(conn, params->client_cert,
4348 params->client_cert_blob,
4349 params->client_cert_blob_len))
6fc6879b
JM		 4350 return -1;
4351
96955192 4352 if (engine_id && key_id) {
e59c91af 4353 wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
6fc6879b
JM		 4354 if (tls_connection_engine_private_key(conn))
4355 return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
bd9b8b2b 4356 } else if (tls_connection_private_key(data, conn,
6fc6879b
JM		 4357 params->private_key,
4358 params->private_key_passwd,
4359 params->private_key_blob,
4360 params->private_key_blob_len)) {
4361 wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
4362 params->private_key);
4363 return -1;
4364 }
4365
4366 if (tls_connection_dh(conn, params->dh_file)) {
4367 wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
4368 params->dh_file);
4369 return -1;
4370 }
4371
b7328434
JM		 4372 if (params->openssl_ciphers &&
4373 SSL_set_cipher_list(conn->ssl, params->openssl_ciphers) != 1) {
4374 wpa_printf(MSG_INFO,
4375 "OpenSSL: Failed to set cipher string '%s'",
4376 params->openssl_ciphers);
4377 return -1;
4378 }
4379
1c9663cf 4380 if (tls_set_conn_flags(conn, params->flags) < 0)
60ed2f24 4381 return -1;
e9a6f183 4382
bdee6ca0
JM		 4383#ifdef OPENSSL_IS_BORINGSSL
4384 if (params->flags & TLS_CONN_REQUEST_OCSP) {
4385 SSL_enable_ocsp_stapling(conn->ssl);
4386 }
4387#else /* OPENSSL_IS_BORINGSSL */
080585c0
JM		 4388#ifdef HAVE_OCSP
4389 if (params->flags & TLS_CONN_REQUEST_OCSP) {
bd9b8b2b 4390 SSL_CTX *ssl_ctx = data->ssl;
080585c0
JM		 4391 SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp);
4392 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb);
4393 SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn);
4394 }
355a5c8e
JM		 4395#else /* HAVE_OCSP */
4396 if (params->flags & TLS_CONN_REQUIRE_OCSP) {
4397 wpa_printf(MSG_INFO,
4398 "OpenSSL: No OCSP support included - reject configuration");
4399 return -1;
4400 }
4401 if (params->flags & TLS_CONN_REQUEST_OCSP) {
4402 wpa_printf(MSG_DEBUG,
4403 "OpenSSL: No OCSP support included - allow optional OCSP case to continue");
4404 }
080585c0 4405#endif /* HAVE_OCSP */
bdee6ca0 4406#endif /* OPENSSL_IS_BORINGSSL */
080585c0 4407
235279e7
JM		 4408 conn->flags = params->flags;
4409
bd9b8b2b 4410 tls_get_errors(data);
6fc6879b
JM		 4411
4412 return 0;
4413}
4414
4415
4416int tls_global_set_params(void *tls_ctx,
4417 const struct tls_connection_params *params)
4418{
bd9b8b2b
JM		 4419 struct tls_data *data = tls_ctx;
4420 SSL_CTX *ssl_ctx = data->ssl;
6fc6879b
JM		 4421 unsigned long err;
4422
4423 while ((err = ERR_get_error())) {
4424 wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
4425 __func__, ERR_error_string(err, NULL));
4426 }
4427
bd9b8b2b
JM		 4428 if (tls_global_ca_cert(data, params->ca_cert) ||
4429 tls_global_client_cert(data, params->client_cert) ||
4430 tls_global_private_key(data, params->private_key,
f24b9797 4431 params->private_key_passwd) ||
bd9b8b2b 4432 tls_global_dh(data, params->dh_file)) {
f24b9797 4433 wpa_printf(MSG_INFO, "TLS: Failed to set global parameters");
6fc6879b
JM		 4434 return -1;
4435 }
4436
b7328434
JM		 4437 if (params->openssl_ciphers &&
4438 SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) {
4439 wpa_printf(MSG_INFO,
4440 "OpenSSL: Failed to set cipher string '%s'",
4441 params->openssl_ciphers);
4442 return -1;
4443 }
4444
e866f39f
JM		 4445#ifdef SSL_OP_NO_TICKET
4446 if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
4447 SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET);
4448 else
4449 SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET);
4450#endif /* SSL_OP_NO_TICKET */
4451
080585c0
JM		 4452#ifdef HAVE_OCSP
4453 SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb);
4454 SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx);
4455 os_free(tls_global->ocsp_stapling_response);
4456 if (params->ocsp_stapling_response)
4457 tls_global->ocsp_stapling_response =
4458 os_strdup(params->ocsp_stapling_response);
4459 else
4460 tls_global->ocsp_stapling_response = NULL;
4461#endif /* HAVE_OCSP */
4462
6fc6879b
JM		 4463 return 0;
4464}
4465
4466
1e5839e0 4467#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
6fc6879b
JM		 4468/* Pre-shared secred requires a patch to openssl, so this function is
4469 * commented out unless explicitly needed for EAP-FAST in order to be able to
4470 * build this file with unmodified openssl. */
4471
587b0457 4472#if (defined(OPENSSL_IS_BORINGSSL) || OPENSSL_VERSION_NUMBER >= 0x10100000L) && !defined(LIBRESSL_VERSION_NUMBER)
a8572960
AL		 4473static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
4474 STACK_OF(SSL_CIPHER) *peer_ciphers,
4475 const SSL_CIPHER **cipher, void *arg)
4476#else /* OPENSSL_IS_BORINGSSL */
6fc6879b
JM		 4477static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
4478 STACK_OF(SSL_CIPHER) *peer_ciphers,
4479 SSL_CIPHER **cipher, void *arg)
a8572960 4480#endif /* OPENSSL_IS_BORINGSSL */
6fc6879b
JM		 4481{
4482 struct tls_connection *conn = arg;
4483 int ret;
4484
36e82060 4485#if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER)
6fc6879b
JM		 4486 if (conn == NULL || conn->session_ticket_cb == NULL)
4487 return 0;
4488
4489 ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
4490 conn->session_ticket,
4491 conn->session_ticket_len,
4492 s->s3->client_random,
4493 s->s3->server_random, secret);
4d2a1b4f
JM		 4494#else
4495 unsigned char client_random[SSL3_RANDOM_SIZE];
4496 unsigned char server_random[SSL3_RANDOM_SIZE];
4497
4498 if (conn == NULL || conn->session_ticket_cb == NULL)
4499 return 0;
4500
4501 SSL_get_client_random(s, client_random, sizeof(client_random));
4502 SSL_get_server_random(s, server_random, sizeof(server_random));
4503
4504 ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
4505 conn->session_ticket,
4506 conn->session_ticket_len,
4507 client_random,
4508 server_random, secret);
4509#endif
4510
6fc6879b
JM		 4511 os_free(conn->session_ticket);
4512 conn->session_ticket = NULL;
4513
4514 if (ret <= 0)
4515 return 0;
4516
4517 *secret_len = SSL_MAX_MASTER_KEY_LENGTH;
4518 return 1;
4519}
4520
4521
0cf03892
JM		 4522static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data,
4523 int len, void *arg)
4524{
4525 struct tls_connection *conn = arg;
4526
4527 if (conn == NULL || conn->session_ticket_cb == NULL)
4528 return 0;
4529
4530 wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len);
4531
4532 os_free(conn->session_ticket);
4533 conn->session_ticket = NULL;
4534
4535 wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
4536 "extension", data, len);
4537
a1f11e34 4538 conn->session_ticket = os_memdup(data, len);
0cf03892
JM		 4539 if (conn->session_ticket == NULL)
4540 return 0;
4541
0cf03892
JM		 4542 conn->session_ticket_len = len;
4543
4544 return 1;
4545}
1e5839e0 4546#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b
JM		 4547
4548
4549int tls_connection_set_session_ticket_cb(void *tls_ctx,
4550 struct tls_connection *conn,
4551 tls_session_ticket_cb cb,
4552 void *ctx)
4553{
1e5839e0 4554#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
6fc6879b
JM		 4555 conn->session_ticket_cb = cb;
4556 conn->session_ticket_cb_ctx = ctx;
4557
4558 if (cb) {
4559 if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
4560 conn) != 1)
4561 return -1;
0cf03892
JM		 4562 SSL_set_session_ticket_ext_cb(conn->ssl,
4563 tls_session_ticket_ext_cb, conn);
6fc6879b
JM		 4564 } else {
4565 if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
4566 return -1;
0cf03892 4567 SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL);
6fc6879b
JM		 4568 }
4569
4570 return 0;
1e5839e0 4571#else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b 4572 return -1;
1e5839e0 4573#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
6fc6879b 4574}
a1651451
JM		 4575
4576
4577int tls_get_library_version(char *buf, size_t buf_len)
4578{
587b0457 4579#if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER)
b34c623c
JM		 4580 return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
4581 OPENSSL_VERSION_TEXT,
4582 OpenSSL_version(OPENSSL_VERSION));
4583#else
a1651451
JM		 4584 return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
4585 OPENSSL_VERSION_TEXT,
4586 SSLeay_version(SSLEAY_VERSION));
b34c623c 4587#endif
a1651451 4588}
b3b8085a
JM		 4589
4590
4591void tls_connection_set_success_data(struct tls_connection *conn,
4592 struct wpabuf *data)
4593{
acf36f31
JM		 4594 SSL_SESSION *sess;
4595 struct wpabuf *old;
4596
4597 if (tls_ex_idx_session < 0)
4598 goto fail;
4599 sess = SSL_get_session(conn->ssl);
4600 if (!sess)
4601 goto fail;
4602 old = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
4603 if (old) {
4604 wpa_printf(MSG_DEBUG, "OpenSSL: Replacing old success data %p",
4605 old);
4606 wpabuf_free(old);
4607 }
4608 if (SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1)
4609 goto fail;
4610
4611 wpa_printf(MSG_DEBUG, "OpenSSL: Stored success data %p", data);
4612 conn->success_data = 1;
4613 return;
4614
4615fail:
4616 wpa_printf(MSG_INFO, "OpenSSL: Failed to store success data");
4617 wpabuf_free(data);
b3b8085a
JM		 4618}
4619
4620
4621void tls_connection_set_success_data_resumed(struct tls_connection *conn)
4622{
acf36f31
JM		 4623 wpa_printf(MSG_DEBUG,
4624 "OpenSSL: Success data accepted for resumed session");
4625 conn->success_data = 1;
b3b8085a
JM		 4626}
4627
4628
4629const struct wpabuf *
4630tls_connection_get_success_data(struct tls_connection *conn)
4631{
acf36f31
JM		 4632 SSL_SESSION *sess;
4633
4634 if (tls_ex_idx_session < 0 ||
4635 !(sess = SSL_get_session(conn->ssl)))
4636 return NULL;
4637 return SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
b3b8085a
JM		 4638}
4639
4640
4641void tls_connection_remove_session(struct tls_connection *conn)
4642{
acf36f31
JM		 4643 SSL_SESSION *sess;
4644
4645 sess = SSL_get_session(conn->ssl);
4646 if (!sess)
4647 return;
4648
4649 if (SSL_CTX_remove_session(conn->ssl_ctx, sess) != 1)
4650 wpa_printf(MSG_DEBUG,
4651 "OpenSSL: Session was not cached");
4652 else
4653 wpa_printf(MSG_DEBUG,
4654 "OpenSSL: Removed cached session to disable session resumption");
b3b8085a 4655}
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