Line data Source code
1 : /*
2 : * SSL/TLS interface functions for OpenSSL
3 : * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi>
4 : *
5 : * This software may be distributed under the terms of the BSD license.
6 : * See README for more details.
7 : */
8 :
9 : #include "includes.h"
10 :
11 : #ifndef CONFIG_SMARTCARD
12 : #ifndef OPENSSL_NO_ENGINE
13 : #ifndef ANDROID
14 : #define OPENSSL_NO_ENGINE
15 : #endif
16 : #endif
17 : #endif
18 :
19 : #include <openssl/ssl.h>
20 : #include <openssl/err.h>
21 : #include <openssl/pkcs12.h>
22 : #include <openssl/x509v3.h>
23 : #ifndef OPENSSL_NO_ENGINE
24 : #include <openssl/engine.h>
25 : #endif /* OPENSSL_NO_ENGINE */
26 : #ifndef OPENSSL_NO_DSA
27 : #include <openssl/dsa.h>
28 : #endif
29 : #ifndef OPENSSL_NO_DH
30 : #include <openssl/dh.h>
31 : #endif
32 :
33 : #include "common.h"
34 : #include "crypto.h"
35 : #include "sha1.h"
36 : #include "sha256.h"
37 : #include "tls.h"
38 :
39 : #if OPENSSL_VERSION_NUMBER < 0x10000000L
40 : /* ERR_remove_thread_state replaces ERR_remove_state and the latter is
41 : * deprecated. However, OpenSSL 0.9.8 doesn't include
42 : * ERR_remove_thread_state. */
43 : #define ERR_remove_thread_state(tid) ERR_remove_state(0)
44 : #endif
45 :
46 : #if defined(OPENSSL_IS_BORINGSSL)
47 : /* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */
48 : typedef size_t stack_index_t;
49 : #else
50 : typedef int stack_index_t;
51 : #endif
52 :
53 : #ifdef SSL_set_tlsext_status_type
54 : #ifndef OPENSSL_NO_TLSEXT
55 : #define HAVE_OCSP
56 : #include <openssl/ocsp.h>
57 : #endif /* OPENSSL_NO_TLSEXT */
58 : #endif /* SSL_set_tlsext_status_type */
59 :
60 : #ifdef ANDROID
61 : #include <openssl/pem.h>
62 : #include <keystore/keystore_get.h>
63 :
64 : static BIO * BIO_from_keystore(const char *key)
65 : {
66 : BIO *bio = NULL;
67 : uint8_t *value = NULL;
68 : int length = keystore_get(key, strlen(key), &value);
69 : if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL)
70 : BIO_write(bio, value, length);
71 : free(value);
72 : return bio;
73 : }
74 : #endif /* ANDROID */
75 :
76 : static int tls_openssl_ref_count = 0;
77 : static int tls_ex_idx_session = -1;
78 :
79 : struct tls_context {
80 : void (*event_cb)(void *ctx, enum tls_event ev,
81 : union tls_event_data *data);
82 : void *cb_ctx;
83 : int cert_in_cb;
84 : char *ocsp_stapling_response;
85 : };
86 :
87 : static struct tls_context *tls_global = NULL;
88 :
89 :
90 : struct tls_data {
91 : SSL_CTX *ssl;
92 : unsigned int tls_session_lifetime;
93 : };
94 :
95 : struct tls_connection {
96 : struct tls_context *context;
97 : SSL_CTX *ssl_ctx;
98 : SSL *ssl;
99 : BIO *ssl_in, *ssl_out;
100 : #ifndef OPENSSL_NO_ENGINE
101 : ENGINE *engine; /* functional reference to the engine */
102 : EVP_PKEY *private_key; /* the private key if using engine */
103 : #endif /* OPENSSL_NO_ENGINE */
104 : char *subject_match, *altsubject_match, *suffix_match, *domain_match;
105 : int read_alerts, write_alerts, failed;
106 :
107 : tls_session_ticket_cb session_ticket_cb;
108 : void *session_ticket_cb_ctx;
109 :
110 : /* SessionTicket received from OpenSSL hello_extension_cb (server) */
111 : u8 *session_ticket;
112 : size_t session_ticket_len;
113 :
114 : unsigned int ca_cert_verify:1;
115 : unsigned int cert_probe:1;
116 : unsigned int server_cert_only:1;
117 : unsigned int invalid_hb_used:1;
118 : unsigned int success_data:1;
119 :
120 : u8 srv_cert_hash[32];
121 :
122 : unsigned int flags;
123 :
124 : X509 *peer_cert;
125 : X509 *peer_issuer;
126 : X509 *peer_issuer_issuer;
127 :
128 : #if OPENSSL_VERSION_NUMBER >= 0x10100000L
129 : unsigned char client_random[SSL3_RANDOM_SIZE];
130 : unsigned char server_random[SSL3_RANDOM_SIZE];
131 : #endif
132 : };
133 :
134 :
135 1275 : static struct tls_context * tls_context_new(const struct tls_config *conf)
136 : {
137 1275 : struct tls_context *context = os_zalloc(sizeof(*context));
138 1275 : if (context == NULL)
139 4 : return NULL;
140 1271 : if (conf) {
141 1271 : context->event_cb = conf->event_cb;
142 1271 : context->cb_ctx = conf->cb_ctx;
143 1271 : context->cert_in_cb = conf->cert_in_cb;
144 : }
145 1271 : return context;
146 : }
147 :
148 :
149 : #ifdef CONFIG_NO_STDOUT_DEBUG
150 :
151 : static void _tls_show_errors(void)
152 : {
153 : unsigned long err;
154 :
155 : while ((err = ERR_get_error())) {
156 : /* Just ignore the errors, since stdout is disabled */
157 : }
158 : }
159 : #define tls_show_errors(l, f, t) _tls_show_errors()
160 :
161 : #else /* CONFIG_NO_STDOUT_DEBUG */
162 :
163 73 : static void tls_show_errors(int level, const char *func, const char *txt)
164 : {
165 : unsigned long err;
166 :
167 73 : wpa_printf(level, "OpenSSL: %s - %s %s",
168 : func, txt, ERR_error_string(ERR_get_error(), NULL));
169 :
170 150 : while ((err = ERR_get_error())) {
171 4 : wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
172 : ERR_error_string(err, NULL));
173 : }
174 73 : }
175 :
176 : #endif /* CONFIG_NO_STDOUT_DEBUG */
177 :
178 :
179 : #ifdef CONFIG_NATIVE_WINDOWS
180 :
181 : /* Windows CryptoAPI and access to certificate stores */
182 : #include <wincrypt.h>
183 :
184 : #ifdef __MINGW32_VERSION
185 : /*
186 : * MinGW does not yet include all the needed definitions for CryptoAPI, so
187 : * define here whatever extra is needed.
188 : */
189 : #define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
190 : #define CERT_STORE_READONLY_FLAG 0x00008000
191 : #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
192 :
193 : #endif /* __MINGW32_VERSION */
194 :
195 :
196 : struct cryptoapi_rsa_data {
197 : const CERT_CONTEXT *cert;
198 : HCRYPTPROV crypt_prov;
199 : DWORD key_spec;
200 : BOOL free_crypt_prov;
201 : };
202 :
203 :
204 : static void cryptoapi_error(const char *msg)
205 : {
206 : wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
207 : msg, (unsigned int) GetLastError());
208 : }
209 :
210 :
211 : static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
212 : unsigned char *to, RSA *rsa, int padding)
213 : {
214 : wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
215 : return 0;
216 : }
217 :
218 :
219 : static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
220 : unsigned char *to, RSA *rsa, int padding)
221 : {
222 : wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
223 : return 0;
224 : }
225 :
226 :
227 : static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
228 : unsigned char *to, RSA *rsa, int padding)
229 : {
230 : struct cryptoapi_rsa_data *priv =
231 : (struct cryptoapi_rsa_data *) rsa->meth->app_data;
232 : HCRYPTHASH hash;
233 : DWORD hash_size, len, i;
234 : unsigned char *buf = NULL;
235 : int ret = 0;
236 :
237 : if (priv == NULL) {
238 : RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
239 : ERR_R_PASSED_NULL_PARAMETER);
240 : return 0;
241 : }
242 :
243 : if (padding != RSA_PKCS1_PADDING) {
244 : RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
245 : RSA_R_UNKNOWN_PADDING_TYPE);
246 : return 0;
247 : }
248 :
249 : if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
250 : wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
251 : __func__);
252 : RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
253 : RSA_R_INVALID_MESSAGE_LENGTH);
254 : return 0;
255 : }
256 :
257 : if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
258 : {
259 : cryptoapi_error("CryptCreateHash failed");
260 : return 0;
261 : }
262 :
263 : len = sizeof(hash_size);
264 : if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
265 : 0)) {
266 : cryptoapi_error("CryptGetHashParam failed");
267 : goto err;
268 : }
269 :
270 : if ((int) hash_size != flen) {
271 : wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
272 : (unsigned) hash_size, flen);
273 : RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
274 : RSA_R_INVALID_MESSAGE_LENGTH);
275 : goto err;
276 : }
277 : if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
278 : cryptoapi_error("CryptSetHashParam failed");
279 : goto err;
280 : }
281 :
282 : len = RSA_size(rsa);
283 : buf = os_malloc(len);
284 : if (buf == NULL) {
285 : RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
286 : goto err;
287 : }
288 :
289 : if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
290 : cryptoapi_error("CryptSignHash failed");
291 : goto err;
292 : }
293 :
294 : for (i = 0; i < len; i++)
295 : to[i] = buf[len - i - 1];
296 : ret = len;
297 :
298 : err:
299 : os_free(buf);
300 : CryptDestroyHash(hash);
301 :
302 : return ret;
303 : }
304 :
305 :
306 : static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
307 : unsigned char *to, RSA *rsa, int padding)
308 : {
309 : wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
310 : return 0;
311 : }
312 :
313 :
314 : static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
315 : {
316 : if (priv == NULL)
317 : return;
318 : if (priv->crypt_prov && priv->free_crypt_prov)
319 : CryptReleaseContext(priv->crypt_prov, 0);
320 : if (priv->cert)
321 : CertFreeCertificateContext(priv->cert);
322 : os_free(priv);
323 : }
324 :
325 :
326 : static int cryptoapi_finish(RSA *rsa)
327 : {
328 : cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
329 : os_free((void *) rsa->meth);
330 : rsa->meth = NULL;
331 : return 1;
332 : }
333 :
334 :
335 : static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
336 : {
337 : HCERTSTORE cs;
338 : const CERT_CONTEXT *ret = NULL;
339 :
340 : cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
341 : store | CERT_STORE_OPEN_EXISTING_FLAG |
342 : CERT_STORE_READONLY_FLAG, L"MY");
343 : if (cs == NULL) {
344 : cryptoapi_error("Failed to open 'My system store'");
345 : return NULL;
346 : }
347 :
348 : if (strncmp(name, "cert://", 7) == 0) {
349 : unsigned short wbuf[255];
350 : MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
351 : ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
352 : PKCS_7_ASN_ENCODING,
353 : 0, CERT_FIND_SUBJECT_STR,
354 : wbuf, NULL);
355 : } else if (strncmp(name, "hash://", 7) == 0) {
356 : CRYPT_HASH_BLOB blob;
357 : int len;
358 : const char *hash = name + 7;
359 : unsigned char *buf;
360 :
361 : len = os_strlen(hash) / 2;
362 : buf = os_malloc(len);
363 : if (buf && hexstr2bin(hash, buf, len) == 0) {
364 : blob.cbData = len;
365 : blob.pbData = buf;
366 : ret = CertFindCertificateInStore(cs,
367 : X509_ASN_ENCODING |
368 : PKCS_7_ASN_ENCODING,
369 : 0, CERT_FIND_HASH,
370 : &blob, NULL);
371 : }
372 : os_free(buf);
373 : }
374 :
375 : CertCloseStore(cs, 0);
376 :
377 : return ret;
378 : }
379 :
380 :
381 : static int tls_cryptoapi_cert(SSL *ssl, const char *name)
382 : {
383 : X509 *cert = NULL;
384 : RSA *rsa = NULL, *pub_rsa;
385 : struct cryptoapi_rsa_data *priv;
386 : RSA_METHOD *rsa_meth;
387 :
388 : if (name == NULL ||
389 : (strncmp(name, "cert://", 7) != 0 &&
390 : strncmp(name, "hash://", 7) != 0))
391 : return -1;
392 :
393 : priv = os_zalloc(sizeof(*priv));
394 : rsa_meth = os_zalloc(sizeof(*rsa_meth));
395 : if (priv == NULL || rsa_meth == NULL) {
396 : wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
397 : "for CryptoAPI RSA method");
398 : os_free(priv);
399 : os_free(rsa_meth);
400 : return -1;
401 : }
402 :
403 : priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
404 : if (priv->cert == NULL) {
405 : priv->cert = cryptoapi_find_cert(
406 : name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
407 : }
408 : if (priv->cert == NULL) {
409 : wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
410 : "'%s'", name);
411 : goto err;
412 : }
413 :
414 : cert = d2i_X509(NULL,
415 : (const unsigned char **) &priv->cert->pbCertEncoded,
416 : priv->cert->cbCertEncoded);
417 : if (cert == NULL) {
418 : wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
419 : "encoding");
420 : goto err;
421 : }
422 :
423 : if (!CryptAcquireCertificatePrivateKey(priv->cert,
424 : CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
425 : NULL, &priv->crypt_prov,
426 : &priv->key_spec,
427 : &priv->free_crypt_prov)) {
428 : cryptoapi_error("Failed to acquire a private key for the "
429 : "certificate");
430 : goto err;
431 : }
432 :
433 : rsa_meth->name = "Microsoft CryptoAPI RSA Method";
434 : rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
435 : rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
436 : rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
437 : rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
438 : rsa_meth->finish = cryptoapi_finish;
439 : rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
440 : rsa_meth->app_data = (char *) priv;
441 :
442 : rsa = RSA_new();
443 : if (rsa == NULL) {
444 : SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
445 : ERR_R_MALLOC_FAILURE);
446 : goto err;
447 : }
448 :
449 : if (!SSL_use_certificate(ssl, cert)) {
450 : RSA_free(rsa);
451 : rsa = NULL;
452 : goto err;
453 : }
454 : pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
455 : X509_free(cert);
456 : cert = NULL;
457 :
458 : rsa->n = BN_dup(pub_rsa->n);
459 : rsa->e = BN_dup(pub_rsa->e);
460 : if (!RSA_set_method(rsa, rsa_meth))
461 : goto err;
462 :
463 : if (!SSL_use_RSAPrivateKey(ssl, rsa))
464 : goto err;
465 : RSA_free(rsa);
466 :
467 : return 0;
468 :
469 : err:
470 : if (cert)
471 : X509_free(cert);
472 : if (rsa)
473 : RSA_free(rsa);
474 : else {
475 : os_free(rsa_meth);
476 : cryptoapi_free_data(priv);
477 : }
478 : return -1;
479 : }
480 :
481 :
482 : static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
483 : {
484 : HCERTSTORE cs;
485 : PCCERT_CONTEXT ctx = NULL;
486 : X509 *cert;
487 : char buf[128];
488 : const char *store;
489 : #ifdef UNICODE
490 : WCHAR *wstore;
491 : #endif /* UNICODE */
492 :
493 : if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
494 : return -1;
495 :
496 : store = name + 13;
497 : #ifdef UNICODE
498 : wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
499 : if (wstore == NULL)
500 : return -1;
501 : wsprintf(wstore, L"%S", store);
502 : cs = CertOpenSystemStore(0, wstore);
503 : os_free(wstore);
504 : #else /* UNICODE */
505 : cs = CertOpenSystemStore(0, store);
506 : #endif /* UNICODE */
507 : if (cs == NULL) {
508 : wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
509 : "'%s': error=%d", __func__, store,
510 : (int) GetLastError());
511 : return -1;
512 : }
513 :
514 : while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
515 : cert = d2i_X509(NULL,
516 : (const unsigned char **) &ctx->pbCertEncoded,
517 : ctx->cbCertEncoded);
518 : if (cert == NULL) {
519 : wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
520 : "X509 DER encoding for CA cert");
521 : continue;
522 : }
523 :
524 : X509_NAME_oneline(X509_get_subject_name(cert), buf,
525 : sizeof(buf));
526 : wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
527 : "system certificate store: subject='%s'", buf);
528 :
529 : if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
530 : tls_show_errors(MSG_WARNING, __func__,
531 : "Failed to add ca_cert to OpenSSL "
532 : "certificate store");
533 : }
534 :
535 : X509_free(cert);
536 : }
537 :
538 : if (!CertCloseStore(cs, 0)) {
539 : wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
540 : "'%s': error=%d", __func__, name + 13,
541 : (int) GetLastError());
542 : }
543 :
544 : return 0;
545 : }
546 :
547 :
548 : #else /* CONFIG_NATIVE_WINDOWS */
549 :
550 1 : static int tls_cryptoapi_cert(SSL *ssl, const char *name)
551 : {
552 1 : return -1;
553 : }
554 :
555 : #endif /* CONFIG_NATIVE_WINDOWS */
556 :
557 :
558 10636 : static void ssl_info_cb(const SSL *ssl, int where, int ret)
559 : {
560 : const char *str;
561 : int w;
562 :
563 10636 : wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
564 10636 : w = where & ~SSL_ST_MASK;
565 10636 : if (w & SSL_ST_CONNECT)
566 4479 : str = "SSL_connect";
567 6157 : else if (w & SSL_ST_ACCEPT)
568 4864 : str = "SSL_accept";
569 : else
570 1293 : str = "undefined";
571 :
572 10636 : if (where & SSL_CB_LOOP) {
573 7194 : wpa_printf(MSG_DEBUG, "SSL: %s:%s",
574 : str, SSL_state_string_long(ssl));
575 3442 : } else if (where & SSL_CB_ALERT) {
576 58 : struct tls_connection *conn = SSL_get_app_data((SSL *) ssl);
577 116 : wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
578 58 : where & SSL_CB_READ ?
579 : "read (remote end reported an error)" :
580 : "write (local SSL3 detected an error)",
581 : SSL_alert_type_string_long(ret),
582 : SSL_alert_desc_string_long(ret));
583 58 : if ((ret >> 8) == SSL3_AL_FATAL) {
584 58 : if (where & SSL_CB_READ)
585 27 : conn->read_alerts++;
586 : else
587 31 : conn->write_alerts++;
588 : }
589 58 : if (conn->context->event_cb != NULL) {
590 : union tls_event_data ev;
591 27 : struct tls_context *context = conn->context;
592 27 : os_memset(&ev, 0, sizeof(ev));
593 27 : ev.alert.is_local = !(where & SSL_CB_READ);
594 27 : ev.alert.type = SSL_alert_type_string_long(ret);
595 27 : ev.alert.description = SSL_alert_desc_string_long(ret);
596 27 : context->event_cb(context->cb_ctx, TLS_ALERT, &ev);
597 : }
598 3384 : } else if (where & SSL_CB_EXIT && ret <= 0) {
599 1566 : wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
600 : str, ret == 0 ? "failed" : "error",
601 : SSL_state_string_long(ssl));
602 : }
603 10636 : }
604 :
605 :
606 : #ifndef OPENSSL_NO_ENGINE
607 : /**
608 : * tls_engine_load_dynamic_generic - load any openssl engine
609 : * @pre: an array of commands and values that load an engine initialized
610 : * in the engine specific function
611 : * @post: an array of commands and values that initialize an already loaded
612 : * engine (or %NULL if not required)
613 : * @id: the engine id of the engine to load (only required if post is not %NULL
614 : *
615 : * This function is a generic function that loads any openssl engine.
616 : *
617 : * Returns: 0 on success, -1 on failure
618 : */
619 : static int tls_engine_load_dynamic_generic(const char *pre[],
620 : const char *post[], const char *id)
621 : {
622 : ENGINE *engine;
623 : const char *dynamic_id = "dynamic";
624 :
625 : engine = ENGINE_by_id(id);
626 : if (engine) {
627 : ENGINE_free(engine);
628 : wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
629 : "available", id);
630 : return 0;
631 : }
632 : ERR_clear_error();
633 :
634 : engine = ENGINE_by_id(dynamic_id);
635 : if (engine == NULL) {
636 : wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
637 : dynamic_id,
638 : ERR_error_string(ERR_get_error(), NULL));
639 : return -1;
640 : }
641 :
642 : /* Perform the pre commands. This will load the engine. */
643 : while (pre && pre[0]) {
644 : wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
645 : if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
646 : wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
647 : "%s %s [%s]", pre[0], pre[1],
648 : ERR_error_string(ERR_get_error(), NULL));
649 : ENGINE_free(engine);
650 : return -1;
651 : }
652 : pre += 2;
653 : }
654 :
655 : /*
656 : * Free the reference to the "dynamic" engine. The loaded engine can
657 : * now be looked up using ENGINE_by_id().
658 : */
659 : ENGINE_free(engine);
660 :
661 : engine = ENGINE_by_id(id);
662 : if (engine == NULL) {
663 : wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
664 : id, ERR_error_string(ERR_get_error(), NULL));
665 : return -1;
666 : }
667 :
668 : while (post && post[0]) {
669 : wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
670 : if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
671 : wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
672 : " %s %s [%s]", post[0], post[1],
673 : ERR_error_string(ERR_get_error(), NULL));
674 : ENGINE_remove(engine);
675 : ENGINE_free(engine);
676 : return -1;
677 : }
678 : post += 2;
679 : }
680 : ENGINE_free(engine);
681 :
682 : return 0;
683 : }
684 :
685 :
686 : /**
687 : * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
688 : * @pkcs11_so_path: pksc11_so_path from the configuration
689 : * @pcks11_module_path: pkcs11_module_path from the configuration
690 : */
691 : static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
692 : const char *pkcs11_module_path)
693 : {
694 : char *engine_id = "pkcs11";
695 : const char *pre_cmd[] = {
696 : "SO_PATH", NULL /* pkcs11_so_path */,
697 : "ID", NULL /* engine_id */,
698 : "LIST_ADD", "1",
699 : /* "NO_VCHECK", "1", */
700 : "LOAD", NULL,
701 : NULL, NULL
702 : };
703 : const char *post_cmd[] = {
704 : "MODULE_PATH", NULL /* pkcs11_module_path */,
705 : NULL, NULL
706 : };
707 :
708 : if (!pkcs11_so_path)
709 : return 0;
710 :
711 : pre_cmd[1] = pkcs11_so_path;
712 : pre_cmd[3] = engine_id;
713 : if (pkcs11_module_path)
714 : post_cmd[1] = pkcs11_module_path;
715 : else
716 : post_cmd[0] = NULL;
717 :
718 : wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
719 : pkcs11_so_path);
720 :
721 : return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
722 : }
723 :
724 :
725 : /**
726 : * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
727 : * @opensc_so_path: opensc_so_path from the configuration
728 : */
729 : static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
730 : {
731 : char *engine_id = "opensc";
732 : const char *pre_cmd[] = {
733 : "SO_PATH", NULL /* opensc_so_path */,
734 : "ID", NULL /* engine_id */,
735 : "LIST_ADD", "1",
736 : "LOAD", NULL,
737 : NULL, NULL
738 : };
739 :
740 : if (!opensc_so_path)
741 : return 0;
742 :
743 : pre_cmd[1] = opensc_so_path;
744 : pre_cmd[3] = engine_id;
745 :
746 : wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
747 : opensc_so_path);
748 :
749 : return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
750 : }
751 : #endif /* OPENSSL_NO_ENGINE */
752 :
753 :
754 10 : static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess)
755 : {
756 : struct wpabuf *buf;
757 :
758 10 : if (tls_ex_idx_session < 0)
759 0 : return;
760 10 : buf = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
761 10 : if (!buf)
762 0 : return;
763 10 : wpa_printf(MSG_DEBUG,
764 : "OpenSSL: Free application session data %p (sess %p)",
765 : buf, sess);
766 10 : wpabuf_free(buf);
767 :
768 10 : SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL);
769 : }
770 :
771 :
772 1275 : void * tls_init(const struct tls_config *conf)
773 : {
774 : struct tls_data *data;
775 : SSL_CTX *ssl;
776 : struct tls_context *context;
777 : const char *ciphers;
778 :
779 1275 : if (tls_openssl_ref_count == 0) {
780 329 : tls_global = context = tls_context_new(conf);
781 329 : if (context == NULL)
782 0 : return NULL;
783 : #ifdef CONFIG_FIPS
784 : #ifdef OPENSSL_FIPS
785 : if (conf && conf->fips_mode) {
786 : static int fips_enabled = 0;
787 :
788 : if (!fips_enabled && !FIPS_mode_set(1)) {
789 : wpa_printf(MSG_ERROR, "Failed to enable FIPS "
790 : "mode");
791 : ERR_load_crypto_strings();
792 : ERR_print_errors_fp(stderr);
793 : os_free(tls_global);
794 : tls_global = NULL;
795 : return NULL;
796 : } else {
797 : wpa_printf(MSG_INFO, "Running in FIPS mode");
798 : fips_enabled = 1;
799 : }
800 : }
801 : #else /* OPENSSL_FIPS */
802 : if (conf && conf->fips_mode) {
803 : wpa_printf(MSG_ERROR, "FIPS mode requested, but not "
804 : "supported");
805 : os_free(tls_global);
806 : tls_global = NULL;
807 : return NULL;
808 : }
809 : #endif /* OPENSSL_FIPS */
810 : #endif /* CONFIG_FIPS */
811 329 : SSL_load_error_strings();
812 329 : SSL_library_init();
813 : #ifndef OPENSSL_NO_SHA256
814 329 : EVP_add_digest(EVP_sha256());
815 : #endif /* OPENSSL_NO_SHA256 */
816 : /* TODO: if /dev/urandom is available, PRNG is seeded
817 : * automatically. If this is not the case, random data should
818 : * be added here. */
819 :
820 : #ifdef PKCS12_FUNCS
821 : #ifndef OPENSSL_NO_RC2
822 : /*
823 : * 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
824 : * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
825 : * versions, but it looks like OpenSSL 1.0.0 does not do that
826 : * anymore.
827 : */
828 329 : EVP_add_cipher(EVP_rc2_40_cbc());
829 : #endif /* OPENSSL_NO_RC2 */
830 329 : PKCS12_PBE_add();
831 : #endif /* PKCS12_FUNCS */
832 : } else {
833 946 : context = tls_context_new(conf);
834 946 : if (context == NULL)
835 4 : return NULL;
836 : }
837 1271 : tls_openssl_ref_count++;
838 :
839 1271 : data = os_zalloc(sizeof(*data));
840 1271 : if (data)
841 1267 : ssl = SSL_CTX_new(SSLv23_method());
842 : else
843 4 : ssl = NULL;
844 1271 : if (ssl == NULL) {
845 4 : tls_openssl_ref_count--;
846 4 : if (context != tls_global)
847 4 : os_free(context);
848 4 : if (tls_openssl_ref_count == 0) {
849 0 : os_free(tls_global);
850 0 : tls_global = NULL;
851 : }
852 4 : return NULL;
853 : }
854 1267 : data->ssl = ssl;
855 1267 : if (conf)
856 1267 : data->tls_session_lifetime = conf->tls_session_lifetime;
857 :
858 1267 : SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2);
859 1267 : SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3);
860 :
861 1267 : SSL_CTX_set_info_callback(ssl, ssl_info_cb);
862 1267 : SSL_CTX_set_app_data(ssl, context);
863 1267 : if (data->tls_session_lifetime > 0) {
864 9 : SSL_CTX_set_quiet_shutdown(ssl, 1);
865 : /*
866 : * Set default context here. In practice, this will be replaced
867 : * by the per-EAP method context in tls_connection_set_verify().
868 : */
869 9 : SSL_CTX_set_session_id_context(ssl, (u8 *) "hostapd", 7);
870 9 : SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_SERVER);
871 9 : SSL_CTX_set_timeout(ssl, data->tls_session_lifetime);
872 9 : SSL_CTX_sess_set_remove_cb(ssl, remove_session_cb);
873 : } else {
874 1258 : SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_OFF);
875 : }
876 :
877 1267 : if (tls_ex_idx_session < 0) {
878 48 : tls_ex_idx_session = SSL_SESSION_get_ex_new_index(
879 : 0, NULL, NULL, NULL, NULL);
880 48 : if (tls_ex_idx_session < 0) {
881 0 : tls_deinit(data);
882 0 : return NULL;
883 : }
884 : }
885 :
886 : #ifndef OPENSSL_NO_ENGINE
887 : wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine");
888 : ERR_load_ENGINE_strings();
889 : ENGINE_load_dynamic();
890 :
891 : if (conf &&
892 : (conf->opensc_engine_path || conf->pkcs11_engine_path ||
893 : conf->pkcs11_module_path)) {
894 : if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
895 : tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
896 : conf->pkcs11_module_path)) {
897 : tls_deinit(data);
898 : return NULL;
899 : }
900 : }
901 : #endif /* OPENSSL_NO_ENGINE */
902 :
903 1267 : if (conf && conf->openssl_ciphers)
904 0 : ciphers = conf->openssl_ciphers;
905 : else
906 1267 : ciphers = "DEFAULT:!EXP:!LOW";
907 1267 : if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) {
908 0 : wpa_printf(MSG_ERROR,
909 : "OpenSSL: Failed to set cipher string '%s'",
910 : ciphers);
911 0 : tls_deinit(data);
912 0 : return NULL;
913 : }
914 :
915 1267 : return data;
916 : }
917 :
918 :
919 1267 : void tls_deinit(void *ssl_ctx)
920 : {
921 1267 : struct tls_data *data = ssl_ctx;
922 1267 : SSL_CTX *ssl = data->ssl;
923 1267 : struct tls_context *context = SSL_CTX_get_app_data(ssl);
924 1267 : if (context != tls_global)
925 938 : os_free(context);
926 1267 : if (data->tls_session_lifetime > 0)
927 9 : SSL_CTX_flush_sessions(ssl, 0);
928 1267 : SSL_CTX_free(ssl);
929 :
930 1267 : tls_openssl_ref_count--;
931 1267 : if (tls_openssl_ref_count == 0) {
932 : #ifndef OPENSSL_NO_ENGINE
933 : ENGINE_cleanup();
934 : #endif /* OPENSSL_NO_ENGINE */
935 329 : CRYPTO_cleanup_all_ex_data();
936 329 : ERR_remove_thread_state(NULL);
937 329 : ERR_free_strings();
938 329 : EVP_cleanup();
939 329 : os_free(tls_global->ocsp_stapling_response);
940 329 : tls_global->ocsp_stapling_response = NULL;
941 329 : os_free(tls_global);
942 329 : tls_global = NULL;
943 : }
944 :
945 1267 : os_free(data);
946 1267 : }
947 :
948 :
949 : #ifndef OPENSSL_NO_ENGINE
950 :
951 : /* Cryptoki return values */
952 : #define CKR_PIN_INCORRECT 0x000000a0
953 : #define CKR_PIN_INVALID 0x000000a1
954 : #define CKR_PIN_LEN_RANGE 0x000000a2
955 :
956 : /* libp11 */
957 : #define ERR_LIB_PKCS11 ERR_LIB_USER
958 :
959 : static int tls_is_pin_error(unsigned int err)
960 : {
961 : return ERR_GET_LIB(err) == ERR_LIB_PKCS11 &&
962 : (ERR_GET_REASON(err) == CKR_PIN_INCORRECT ||
963 : ERR_GET_REASON(err) == CKR_PIN_INVALID ||
964 : ERR_GET_REASON(err) == CKR_PIN_LEN_RANGE);
965 : }
966 :
967 : #endif /* OPENSSL_NO_ENGINE */
968 :
969 :
970 0 : static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
971 : const char *pin, const char *key_id,
972 : const char *cert_id, const char *ca_cert_id)
973 : {
974 : #ifndef OPENSSL_NO_ENGINE
975 : int ret = -1;
976 : if (engine_id == NULL) {
977 : wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
978 : return -1;
979 : }
980 :
981 : ERR_clear_error();
982 : #ifdef ANDROID
983 : ENGINE_load_dynamic();
984 : #endif
985 : conn->engine = ENGINE_by_id(engine_id);
986 : if (!conn->engine) {
987 : wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
988 : engine_id, ERR_error_string(ERR_get_error(), NULL));
989 : goto err;
990 : }
991 : if (ENGINE_init(conn->engine) != 1) {
992 : wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
993 : "(engine: %s) [%s]", engine_id,
994 : ERR_error_string(ERR_get_error(), NULL));
995 : goto err;
996 : }
997 : wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
998 :
999 : #ifndef ANDROID
1000 : if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
1001 : wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
1002 : ERR_error_string(ERR_get_error(), NULL));
1003 : goto err;
1004 : }
1005 : #endif
1006 : if (key_id) {
1007 : /*
1008 : * Ensure that the ENGINE does not attempt to use the OpenSSL
1009 : * UI system to obtain a PIN, if we didn't provide one.
1010 : */
1011 : struct {
1012 : const void *password;
1013 : const char *prompt_info;
1014 : } key_cb = { "", NULL };
1015 :
1016 : /* load private key first in-case PIN is required for cert */
1017 : conn->private_key = ENGINE_load_private_key(conn->engine,
1018 : key_id, NULL,
1019 : &key_cb);
1020 : if (!conn->private_key) {
1021 : unsigned long err = ERR_get_error();
1022 :
1023 : wpa_printf(MSG_ERROR,
1024 : "ENGINE: cannot load private key with id '%s' [%s]",
1025 : key_id,
1026 : ERR_error_string(err, NULL));
1027 : if (tls_is_pin_error(err))
1028 : ret = TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
1029 : else
1030 : ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1031 : goto err;
1032 : }
1033 : }
1034 :
1035 : /* handle a certificate and/or CA certificate */
1036 : if (cert_id || ca_cert_id) {
1037 : const char *cmd_name = "LOAD_CERT_CTRL";
1038 :
1039 : /* test if the engine supports a LOAD_CERT_CTRL */
1040 : if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME,
1041 : 0, (void *)cmd_name, NULL)) {
1042 : wpa_printf(MSG_ERROR, "ENGINE: engine does not support"
1043 : " loading certificates");
1044 : ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1045 : goto err;
1046 : }
1047 : }
1048 :
1049 : return 0;
1050 :
1051 : err:
1052 : if (conn->engine) {
1053 : ENGINE_free(conn->engine);
1054 : conn->engine = NULL;
1055 : }
1056 :
1057 : if (conn->private_key) {
1058 : EVP_PKEY_free(conn->private_key);
1059 : conn->private_key = NULL;
1060 : }
1061 :
1062 : return ret;
1063 : #else /* OPENSSL_NO_ENGINE */
1064 0 : return 0;
1065 : #endif /* OPENSSL_NO_ENGINE */
1066 : }
1067 :
1068 :
1069 752 : static void tls_engine_deinit(struct tls_connection *conn)
1070 : {
1071 : #ifndef OPENSSL_NO_ENGINE
1072 : wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
1073 : if (conn->private_key) {
1074 : EVP_PKEY_free(conn->private_key);
1075 : conn->private_key = NULL;
1076 : }
1077 : if (conn->engine) {
1078 : ENGINE_finish(conn->engine);
1079 : conn->engine = NULL;
1080 : }
1081 : #endif /* OPENSSL_NO_ENGINE */
1082 752 : }
1083 :
1084 :
1085 2240 : int tls_get_errors(void *ssl_ctx)
1086 : {
1087 2240 : int count = 0;
1088 : unsigned long err;
1089 :
1090 4480 : while ((err = ERR_get_error())) {
1091 0 : wpa_printf(MSG_INFO, "TLS - SSL error: %s",
1092 : ERR_error_string(err, NULL));
1093 0 : count++;
1094 : }
1095 :
1096 2240 : return count;
1097 : }
1098 :
1099 :
1100 14101 : static void tls_msg_cb(int write_p, int version, int content_type,
1101 : const void *buf, size_t len, SSL *ssl, void *arg)
1102 : {
1103 14101 : struct tls_connection *conn = arg;
1104 14101 : const u8 *pos = buf;
1105 :
1106 14101 : wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d",
1107 : write_p ? "TX" : "RX", version, content_type);
1108 14101 : wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len);
1109 14101 : if (content_type == 24 && len >= 3 && pos[0] == 1) {
1110 0 : size_t payload_len = WPA_GET_BE16(pos + 1);
1111 0 : if (payload_len + 3 > len) {
1112 0 : wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected");
1113 0 : conn->invalid_hb_used = 1;
1114 : }
1115 : }
1116 14101 : }
1117 :
1118 :
1119 752 : struct tls_connection * tls_connection_init(void *ssl_ctx)
1120 : {
1121 752 : struct tls_data *data = ssl_ctx;
1122 752 : SSL_CTX *ssl = data->ssl;
1123 : struct tls_connection *conn;
1124 : long options;
1125 752 : struct tls_context *context = SSL_CTX_get_app_data(ssl);
1126 :
1127 752 : conn = os_zalloc(sizeof(*conn));
1128 752 : if (conn == NULL)
1129 0 : return NULL;
1130 752 : conn->ssl_ctx = ssl;
1131 752 : conn->ssl = SSL_new(ssl);
1132 752 : if (conn->ssl == NULL) {
1133 0 : tls_show_errors(MSG_INFO, __func__,
1134 : "Failed to initialize new SSL connection");
1135 0 : os_free(conn);
1136 0 : return NULL;
1137 : }
1138 :
1139 752 : conn->context = context;
1140 752 : SSL_set_app_data(conn->ssl, conn);
1141 752 : SSL_set_msg_callback(conn->ssl, tls_msg_cb);
1142 752 : SSL_set_msg_callback_arg(conn->ssl, conn);
1143 752 : options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
1144 : SSL_OP_SINGLE_DH_USE;
1145 : #ifdef SSL_OP_NO_COMPRESSION
1146 752 : options |= SSL_OP_NO_COMPRESSION;
1147 : #endif /* SSL_OP_NO_COMPRESSION */
1148 752 : SSL_set_options(conn->ssl, options);
1149 :
1150 752 : conn->ssl_in = BIO_new(BIO_s_mem());
1151 752 : if (!conn->ssl_in) {
1152 0 : tls_show_errors(MSG_INFO, __func__,
1153 : "Failed to create a new BIO for ssl_in");
1154 0 : SSL_free(conn->ssl);
1155 0 : os_free(conn);
1156 0 : return NULL;
1157 : }
1158 :
1159 752 : conn->ssl_out = BIO_new(BIO_s_mem());
1160 752 : if (!conn->ssl_out) {
1161 0 : tls_show_errors(MSG_INFO, __func__,
1162 : "Failed to create a new BIO for ssl_out");
1163 0 : SSL_free(conn->ssl);
1164 0 : BIO_free(conn->ssl_in);
1165 0 : os_free(conn);
1166 0 : return NULL;
1167 : }
1168 :
1169 752 : SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
1170 :
1171 752 : return conn;
1172 : }
1173 :
1174 :
1175 761 : void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
1176 : {
1177 761 : if (conn == NULL)
1178 770 : return;
1179 752 : if (conn->success_data) {
1180 : /*
1181 : * Make sure ssl_clear_bad_session() does not remove this
1182 : * session.
1183 : */
1184 20 : SSL_set_quiet_shutdown(conn->ssl, 1);
1185 20 : SSL_shutdown(conn->ssl);
1186 : }
1187 752 : SSL_free(conn->ssl);
1188 752 : tls_engine_deinit(conn);
1189 752 : os_free(conn->subject_match);
1190 752 : os_free(conn->altsubject_match);
1191 752 : os_free(conn->suffix_match);
1192 752 : os_free(conn->domain_match);
1193 752 : os_free(conn->session_ticket);
1194 752 : os_free(conn);
1195 : }
1196 :
1197 :
1198 5005 : int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
1199 : {
1200 5005 : return conn ? SSL_is_init_finished(conn->ssl) : 0;
1201 : }
1202 :
1203 :
1204 39 : int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
1205 : {
1206 39 : if (conn == NULL)
1207 0 : return -1;
1208 :
1209 : /* Shutdown previous TLS connection without notifying the peer
1210 : * because the connection was already terminated in practice
1211 : * and "close notify" shutdown alert would confuse AS. */
1212 39 : SSL_set_quiet_shutdown(conn->ssl, 1);
1213 39 : SSL_shutdown(conn->ssl);
1214 39 : return SSL_clear(conn->ssl) == 1 ? 0 : -1;
1215 : }
1216 :
1217 :
1218 15 : static int tls_match_altsubject_component(X509 *cert, int type,
1219 : const char *value, size_t len)
1220 : {
1221 : GENERAL_NAME *gen;
1222 : void *ext;
1223 15 : int found = 0;
1224 : stack_index_t i;
1225 :
1226 15 : ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1227 :
1228 30 : for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1229 15 : gen = sk_GENERAL_NAME_value(ext, i);
1230 15 : if (gen->type != type)
1231 6 : continue;
1232 14 : if (os_strlen((char *) gen->d.ia5->data) == len &&
1233 5 : os_memcmp(value, gen->d.ia5->data, len) == 0)
1234 5 : found++;
1235 : }
1236 :
1237 15 : return found;
1238 : }
1239 :
1240 :
1241 10 : static int tls_match_altsubject(X509 *cert, const char *match)
1242 : {
1243 : int type;
1244 : const char *pos, *end;
1245 : size_t len;
1246 :
1247 10 : pos = match;
1248 : do {
1249 16 : if (os_strncmp(pos, "EMAIL:", 6) == 0) {
1250 4 : type = GEN_EMAIL;
1251 4 : pos += 6;
1252 12 : } else if (os_strncmp(pos, "DNS:", 4) == 0) {
1253 9 : type = GEN_DNS;
1254 9 : pos += 4;
1255 3 : } else if (os_strncmp(pos, "URI:", 4) == 0) {
1256 2 : type = GEN_URI;
1257 2 : pos += 4;
1258 : } else {
1259 1 : wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
1260 : "match '%s'", pos);
1261 1 : return 0;
1262 : }
1263 15 : end = os_strchr(pos, ';');
1264 30 : while (end) {
1265 16 : if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
1266 12 : os_strncmp(end + 1, "DNS:", 4) == 0 ||
1267 4 : os_strncmp(end + 1, "URI:", 4) == 0)
1268 : break;
1269 0 : end = os_strchr(end + 1, ';');
1270 : }
1271 15 : if (end)
1272 8 : len = end - pos;
1273 : else
1274 7 : len = os_strlen(pos);
1275 15 : if (tls_match_altsubject_component(cert, type, pos, len) > 0)
1276 5 : return 1;
1277 10 : pos = end + 1;
1278 10 : } while (end);
1279 :
1280 4 : return 0;
1281 : }
1282 :
1283 :
1284 : #ifndef CONFIG_NATIVE_WINDOWS
1285 22 : static int domain_suffix_match(const u8 *val, size_t len, const char *match,
1286 : int full)
1287 : {
1288 : size_t i, match_len;
1289 :
1290 : /* Check for embedded nuls that could mess up suffix matching */
1291 293 : for (i = 0; i < len; i++) {
1292 271 : if (val[i] == '\0') {
1293 0 : wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject");
1294 0 : return 0;
1295 : }
1296 : }
1297 :
1298 22 : match_len = os_strlen(match);
1299 22 : if (match_len > len || (full && match_len != len))
1300 5 : return 0;
1301 :
1302 17 : if (os_strncasecmp((const char *) val + len - match_len, match,
1303 : match_len) != 0)
1304 1 : return 0; /* no match */
1305 :
1306 16 : if (match_len == len)
1307 11 : return 1; /* exact match */
1308 :
1309 5 : if (val[len - match_len - 1] == '.')
1310 4 : return 1; /* full label match completes suffix match */
1311 :
1312 1 : wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match");
1313 1 : return 0;
1314 : }
1315 : #endif /* CONFIG_NATIVE_WINDOWS */
1316 :
1317 :
1318 22 : static int tls_match_suffix(X509 *cert, const char *match, int full)
1319 : {
1320 : #ifdef CONFIG_NATIVE_WINDOWS
1321 : /* wincrypt.h has conflicting X509_NAME definition */
1322 : return -1;
1323 : #else /* CONFIG_NATIVE_WINDOWS */
1324 : GENERAL_NAME *gen;
1325 : void *ext;
1326 : int i;
1327 : stack_index_t j;
1328 22 : int dns_name = 0;
1329 : X509_NAME *name;
1330 :
1331 22 : wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s",
1332 : full ? "": "suffix ", match);
1333 :
1334 22 : ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
1335 :
1336 25 : for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) {
1337 15 : gen = sk_GENERAL_NAME_value(ext, j);
1338 15 : if (gen->type != GEN_DNS)
1339 0 : continue;
1340 15 : dns_name++;
1341 30 : wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName",
1342 15 : gen->d.dNSName->data,
1343 15 : gen->d.dNSName->length);
1344 15 : if (domain_suffix_match(gen->d.dNSName->data,
1345 15 : gen->d.dNSName->length, match, full) ==
1346 : 1) {
1347 12 : wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found",
1348 : full ? "Match" : "Suffix match");
1349 12 : return 1;
1350 : }
1351 : }
1352 :
1353 10 : if (dns_name) {
1354 3 : wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched");
1355 3 : return 0;
1356 : }
1357 :
1358 7 : name = X509_get_subject_name(cert);
1359 7 : i = -1;
1360 : for (;;) {
1361 : X509_NAME_ENTRY *e;
1362 : ASN1_STRING *cn;
1363 :
1364 11 : i = X509_NAME_get_index_by_NID(name, NID_commonName, i);
1365 11 : if (i == -1)
1366 4 : break;
1367 7 : e = X509_NAME_get_entry(name, i);
1368 7 : if (e == NULL)
1369 0 : continue;
1370 7 : cn = X509_NAME_ENTRY_get_data(e);
1371 7 : if (cn == NULL)
1372 0 : continue;
1373 14 : wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName",
1374 14 : cn->data, cn->length);
1375 7 : if (domain_suffix_match(cn->data, cn->length, match, full) == 1)
1376 : {
1377 3 : wpa_printf(MSG_DEBUG, "TLS: %s in commonName found",
1378 : full ? "Match" : "Suffix match");
1379 3 : return 1;
1380 : }
1381 4 : }
1382 :
1383 4 : wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found",
1384 : full ? "": "suffix ");
1385 4 : return 0;
1386 : #endif /* CONFIG_NATIVE_WINDOWS */
1387 : }
1388 :
1389 :
1390 8 : static enum tls_fail_reason openssl_tls_fail_reason(int err)
1391 : {
1392 8 : switch (err) {
1393 : case X509_V_ERR_CERT_REVOKED:
1394 0 : return TLS_FAIL_REVOKED;
1395 : case X509_V_ERR_CERT_NOT_YET_VALID:
1396 : case X509_V_ERR_CRL_NOT_YET_VALID:
1397 0 : return TLS_FAIL_NOT_YET_VALID;
1398 : case X509_V_ERR_CERT_HAS_EXPIRED:
1399 : case X509_V_ERR_CRL_HAS_EXPIRED:
1400 1 : return TLS_FAIL_EXPIRED;
1401 : case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
1402 : case X509_V_ERR_UNABLE_TO_GET_CRL:
1403 : case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
1404 : case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
1405 : case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
1406 : case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1407 : case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
1408 : case X509_V_ERR_CERT_CHAIN_TOO_LONG:
1409 : case X509_V_ERR_PATH_LENGTH_EXCEEDED:
1410 : case X509_V_ERR_INVALID_CA:
1411 6 : return TLS_FAIL_UNTRUSTED;
1412 : case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
1413 : case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
1414 : case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
1415 : case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
1416 : case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
1417 : case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
1418 : case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
1419 : case X509_V_ERR_CERT_UNTRUSTED:
1420 : case X509_V_ERR_CERT_REJECTED:
1421 0 : return TLS_FAIL_BAD_CERTIFICATE;
1422 : default:
1423 1 : return TLS_FAIL_UNSPECIFIED;
1424 : }
1425 : }
1426 :
1427 :
1428 606 : static struct wpabuf * get_x509_cert(X509 *cert)
1429 : {
1430 : struct wpabuf *buf;
1431 : u8 *tmp;
1432 :
1433 606 : int cert_len = i2d_X509(cert, NULL);
1434 606 : if (cert_len <= 0)
1435 0 : return NULL;
1436 :
1437 606 : buf = wpabuf_alloc(cert_len);
1438 606 : if (buf == NULL)
1439 0 : return NULL;
1440 :
1441 606 : tmp = wpabuf_put(buf, cert_len);
1442 606 : i2d_X509(cert, &tmp);
1443 606 : return buf;
1444 : }
1445 :
1446 :
1447 23 : static void openssl_tls_fail_event(struct tls_connection *conn,
1448 : X509 *err_cert, int err, int depth,
1449 : const char *subject, const char *err_str,
1450 : enum tls_fail_reason reason)
1451 : {
1452 : union tls_event_data ev;
1453 23 : struct wpabuf *cert = NULL;
1454 23 : struct tls_context *context = conn->context;
1455 :
1456 23 : if (context->event_cb == NULL)
1457 24 : return;
1458 :
1459 22 : cert = get_x509_cert(err_cert);
1460 22 : os_memset(&ev, 0, sizeof(ev));
1461 22 : ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
1462 : reason : openssl_tls_fail_reason(err);
1463 22 : ev.cert_fail.depth = depth;
1464 22 : ev.cert_fail.subject = subject;
1465 22 : ev.cert_fail.reason_txt = err_str;
1466 22 : ev.cert_fail.cert = cert;
1467 22 : context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
1468 22 : wpabuf_free(cert);
1469 : }
1470 :
1471 :
1472 656 : static void openssl_tls_cert_event(struct tls_connection *conn,
1473 : X509 *err_cert, int depth,
1474 : const char *subject)
1475 : {
1476 656 : struct wpabuf *cert = NULL;
1477 : union tls_event_data ev;
1478 656 : struct tls_context *context = conn->context;
1479 : char *altsubject[TLS_MAX_ALT_SUBJECT];
1480 656 : int alt, num_altsubject = 0;
1481 : GENERAL_NAME *gen;
1482 : void *ext;
1483 : stack_index_t i;
1484 : #ifdef CONFIG_SHA256
1485 : u8 hash[32];
1486 : #endif /* CONFIG_SHA256 */
1487 :
1488 656 : if (context->event_cb == NULL)
1489 730 : return;
1490 :
1491 582 : os_memset(&ev, 0, sizeof(ev));
1492 582 : if (conn->cert_probe || context->cert_in_cb) {
1493 582 : cert = get_x509_cert(err_cert);
1494 582 : ev.peer_cert.cert = cert;
1495 : }
1496 : #ifdef CONFIG_SHA256
1497 582 : if (cert) {
1498 : const u8 *addr[1];
1499 : size_t len[1];
1500 582 : addr[0] = wpabuf_head(cert);
1501 582 : len[0] = wpabuf_len(cert);
1502 582 : if (sha256_vector(1, addr, len, hash) == 0) {
1503 582 : ev.peer_cert.hash = hash;
1504 582 : ev.peer_cert.hash_len = sizeof(hash);
1505 : }
1506 : }
1507 : #endif /* CONFIG_SHA256 */
1508 582 : ev.peer_cert.depth = depth;
1509 582 : ev.peer_cert.subject = subject;
1510 :
1511 582 : ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL);
1512 850 : for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
1513 : char *pos;
1514 :
1515 268 : if (num_altsubject == TLS_MAX_ALT_SUBJECT)
1516 0 : break;
1517 268 : gen = sk_GENERAL_NAME_value(ext, i);
1518 536 : if (gen->type != GEN_EMAIL &&
1519 268 : gen->type != GEN_DNS &&
1520 0 : gen->type != GEN_URI)
1521 0 : continue;
1522 :
1523 268 : pos = os_malloc(10 + gen->d.ia5->length + 1);
1524 268 : if (pos == NULL)
1525 0 : break;
1526 268 : altsubject[num_altsubject++] = pos;
1527 :
1528 268 : switch (gen->type) {
1529 : case GEN_EMAIL:
1530 0 : os_memcpy(pos, "EMAIL:", 6);
1531 0 : pos += 6;
1532 0 : break;
1533 : case GEN_DNS:
1534 268 : os_memcpy(pos, "DNS:", 4);
1535 268 : pos += 4;
1536 268 : break;
1537 : case GEN_URI:
1538 0 : os_memcpy(pos, "URI:", 4);
1539 0 : pos += 4;
1540 0 : break;
1541 : }
1542 :
1543 268 : os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length);
1544 268 : pos += gen->d.ia5->length;
1545 268 : *pos = '\0';
1546 : }
1547 :
1548 850 : for (alt = 0; alt < num_altsubject; alt++)
1549 268 : ev.peer_cert.altsubject[alt] = altsubject[alt];
1550 582 : ev.peer_cert.num_altsubject = num_altsubject;
1551 :
1552 582 : context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
1553 582 : wpabuf_free(cert);
1554 850 : for (alt = 0; alt < num_altsubject; alt++)
1555 268 : os_free(altsubject[alt]);
1556 : }
1557 :
1558 :
1559 678 : static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
1560 : {
1561 : char buf[256];
1562 : X509 *err_cert;
1563 : int err, depth;
1564 : SSL *ssl;
1565 : struct tls_connection *conn;
1566 : struct tls_context *context;
1567 : char *match, *altmatch, *suffix_match, *domain_match;
1568 : const char *err_str;
1569 :
1570 678 : err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
1571 678 : if (!err_cert)
1572 0 : return 0;
1573 :
1574 678 : err = X509_STORE_CTX_get_error(x509_ctx);
1575 678 : depth = X509_STORE_CTX_get_error_depth(x509_ctx);
1576 678 : ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
1577 : SSL_get_ex_data_X509_STORE_CTX_idx());
1578 678 : X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
1579 :
1580 678 : conn = SSL_get_app_data(ssl);
1581 678 : if (conn == NULL)
1582 0 : return 0;
1583 :
1584 678 : if (depth == 0)
1585 329 : conn->peer_cert = err_cert;
1586 349 : else if (depth == 1)
1587 349 : conn->peer_issuer = err_cert;
1588 0 : else if (depth == 2)
1589 0 : conn->peer_issuer_issuer = err_cert;
1590 :
1591 678 : context = conn->context;
1592 678 : match = conn->subject_match;
1593 678 : altmatch = conn->altsubject_match;
1594 678 : suffix_match = conn->suffix_match;
1595 678 : domain_match = conn->domain_match;
1596 :
1597 678 : if (!preverify_ok && !conn->ca_cert_verify)
1598 16 : preverify_ok = 1;
1599 678 : if (!preverify_ok && depth > 0 && conn->server_cert_only)
1600 2 : preverify_ok = 1;
1601 678 : if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) &&
1602 0 : (err == X509_V_ERR_CERT_HAS_EXPIRED ||
1603 : err == X509_V_ERR_CERT_NOT_YET_VALID)) {
1604 1 : wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity "
1605 : "time mismatch");
1606 1 : preverify_ok = 1;
1607 : }
1608 :
1609 678 : err_str = X509_verify_cert_error_string(err);
1610 :
1611 : #ifdef CONFIG_SHA256
1612 : /*
1613 : * Do not require preverify_ok so we can explicity allow otherwise
1614 : * invalid pinned server certificates.
1615 : */
1616 678 : if (depth == 0 && conn->server_cert_only) {
1617 : struct wpabuf *cert;
1618 2 : cert = get_x509_cert(err_cert);
1619 2 : if (!cert) {
1620 0 : wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch "
1621 : "server certificate data");
1622 0 : preverify_ok = 0;
1623 : } else {
1624 : u8 hash[32];
1625 : const u8 *addr[1];
1626 : size_t len[1];
1627 2 : addr[0] = wpabuf_head(cert);
1628 2 : len[0] = wpabuf_len(cert);
1629 4 : if (sha256_vector(1, addr, len, hash) < 0 ||
1630 2 : os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
1631 1 : err_str = "Server certificate mismatch";
1632 1 : err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
1633 1 : preverify_ok = 0;
1634 1 : } else if (!preverify_ok) {
1635 : /*
1636 : * Certificate matches pinned certificate, allow
1637 : * regardless of other problems.
1638 : */
1639 0 : wpa_printf(MSG_DEBUG,
1640 : "OpenSSL: Ignore validation issues for a pinned server certificate");
1641 0 : preverify_ok = 1;
1642 : }
1643 2 : wpabuf_free(cert);
1644 : }
1645 : }
1646 : #endif /* CONFIG_SHA256 */
1647 :
1648 678 : if (!preverify_ok) {
1649 9 : wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
1650 : " error %d (%s) depth %d for '%s'", err, err_str,
1651 : depth, buf);
1652 9 : openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1653 : err_str, TLS_FAIL_UNSPECIFIED);
1654 9 : return preverify_ok;
1655 : }
1656 :
1657 669 : wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d "
1658 : "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
1659 : preverify_ok, err, err_str,
1660 669 : conn->ca_cert_verify, depth, buf);
1661 669 : if (depth == 0 && match && os_strstr(buf, match) == NULL) {
1662 1 : wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
1663 : "match with '%s'", buf, match);
1664 1 : preverify_ok = 0;
1665 1 : openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1666 : "Subject mismatch",
1667 : TLS_FAIL_SUBJECT_MISMATCH);
1668 678 : } else if (depth == 0 && altmatch &&
1669 10 : !tls_match_altsubject(err_cert, altmatch)) {
1670 5 : wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
1671 : "'%s' not found", altmatch);
1672 5 : preverify_ok = 0;
1673 5 : openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1674 : "AltSubject mismatch",
1675 : TLS_FAIL_ALTSUBJECT_MISMATCH);
1676 679 : } else if (depth == 0 && suffix_match &&
1677 16 : !tls_match_suffix(err_cert, suffix_match, 0)) {
1678 4 : wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found",
1679 : suffix_match);
1680 4 : preverify_ok = 0;
1681 4 : openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1682 : "Domain suffix mismatch",
1683 : TLS_FAIL_DOMAIN_SUFFIX_MISMATCH);
1684 665 : } else if (depth == 0 && domain_match &&
1685 6 : !tls_match_suffix(err_cert, domain_match, 1)) {
1686 3 : wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found",
1687 : domain_match);
1688 3 : preverify_ok = 0;
1689 3 : openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1690 : "Domain mismatch",
1691 : TLS_FAIL_DOMAIN_MISMATCH);
1692 : } else
1693 656 : openssl_tls_cert_event(conn, err_cert, depth, buf);
1694 :
1695 669 : if (conn->cert_probe && preverify_ok && depth == 0) {
1696 1 : wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate "
1697 : "on probe-only run");
1698 1 : preverify_ok = 0;
1699 1 : openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1700 : "Server certificate chain probe",
1701 : TLS_FAIL_SERVER_CHAIN_PROBE);
1702 : }
1703 :
1704 669 : if (preverify_ok && context->event_cb != NULL)
1705 581 : context->event_cb(context->cb_ctx,
1706 : TLS_CERT_CHAIN_SUCCESS, NULL);
1707 :
1708 669 : return preverify_ok;
1709 : }
1710 :
1711 :
1712 : #ifndef OPENSSL_NO_STDIO
1713 8 : static int tls_load_ca_der(struct tls_data *data, const char *ca_cert)
1714 : {
1715 8 : SSL_CTX *ssl_ctx = data->ssl;
1716 : X509_LOOKUP *lookup;
1717 8 : int ret = 0;
1718 :
1719 8 : lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx),
1720 : X509_LOOKUP_file());
1721 8 : if (lookup == NULL) {
1722 0 : tls_show_errors(MSG_WARNING, __func__,
1723 : "Failed add lookup for X509 store");
1724 0 : return -1;
1725 : }
1726 :
1727 8 : if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
1728 0 : unsigned long err = ERR_peek_error();
1729 0 : tls_show_errors(MSG_WARNING, __func__,
1730 : "Failed load CA in DER format");
1731 0 : if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1732 0 : ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1733 0 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1734 : "cert already in hash table error",
1735 : __func__);
1736 : } else
1737 0 : ret = -1;
1738 : }
1739 :
1740 8 : return ret;
1741 : }
1742 : #endif /* OPENSSL_NO_STDIO */
1743 :
1744 :
1745 294 : static int tls_connection_ca_cert(struct tls_data *data,
1746 : struct tls_connection *conn,
1747 : const char *ca_cert, const u8 *ca_cert_blob,
1748 : size_t ca_cert_blob_len, const char *ca_path)
1749 : {
1750 294 : SSL_CTX *ssl_ctx = data->ssl;
1751 : X509_STORE *store;
1752 :
1753 : /*
1754 : * Remove previously configured trusted CA certificates before adding
1755 : * new ones.
1756 : */
1757 294 : store = X509_STORE_new();
1758 294 : if (store == NULL) {
1759 0 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
1760 : "certificate store", __func__);
1761 0 : return -1;
1762 : }
1763 294 : SSL_CTX_set_cert_store(ssl_ctx, store);
1764 :
1765 294 : SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1766 294 : conn->ca_cert_verify = 1;
1767 :
1768 294 : if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
1769 1 : wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate "
1770 : "chain");
1771 1 : conn->cert_probe = 1;
1772 1 : conn->ca_cert_verify = 0;
1773 1 : return 0;
1774 : }
1775 :
1776 293 : if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
1777 : #ifdef CONFIG_SHA256
1778 5 : const char *pos = ca_cert + 7;
1779 5 : if (os_strncmp(pos, "server/sha256/", 14) != 0) {
1780 1 : wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert "
1781 : "hash value '%s'", ca_cert);
1782 1 : return -1;
1783 : }
1784 4 : pos += 14;
1785 4 : if (os_strlen(pos) != 32 * 2) {
1786 1 : wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 "
1787 : "hash length in ca_cert '%s'", ca_cert);
1788 1 : return -1;
1789 : }
1790 3 : if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
1791 1 : wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash "
1792 : "value in ca_cert '%s'", ca_cert);
1793 1 : return -1;
1794 : }
1795 2 : conn->server_cert_only = 1;
1796 2 : wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server "
1797 : "certificate match");
1798 2 : return 0;
1799 : #else /* CONFIG_SHA256 */
1800 : wpa_printf(MSG_INFO, "No SHA256 included in the build - "
1801 : "cannot validate server certificate hash");
1802 : return -1;
1803 : #endif /* CONFIG_SHA256 */
1804 : }
1805 :
1806 288 : if (ca_cert_blob) {
1807 3 : X509 *cert = d2i_X509(NULL,
1808 : (const unsigned char **) &ca_cert_blob,
1809 : ca_cert_blob_len);
1810 3 : if (cert == NULL) {
1811 0 : tls_show_errors(MSG_WARNING, __func__,
1812 : "Failed to parse ca_cert_blob");
1813 0 : return -1;
1814 : }
1815 :
1816 3 : if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx),
1817 : cert)) {
1818 0 : unsigned long err = ERR_peek_error();
1819 0 : tls_show_errors(MSG_WARNING, __func__,
1820 : "Failed to add ca_cert_blob to "
1821 : "certificate store");
1822 0 : if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1823 0 : ERR_GET_REASON(err) ==
1824 : X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1825 0 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1826 : "cert already in hash table error",
1827 : __func__);
1828 : } else {
1829 0 : X509_free(cert);
1830 0 : return -1;
1831 : }
1832 : }
1833 3 : X509_free(cert);
1834 3 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
1835 : "to certificate store", __func__);
1836 3 : return 0;
1837 : }
1838 :
1839 : #ifdef ANDROID
1840 : if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) {
1841 : BIO *bio = BIO_from_keystore(&ca_cert[11]);
1842 : STACK_OF(X509_INFO) *stack = NULL;
1843 : stack_index_t i;
1844 :
1845 : if (bio) {
1846 : stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL);
1847 : BIO_free(bio);
1848 : }
1849 : if (!stack)
1850 : return -1;
1851 :
1852 : for (i = 0; i < sk_X509_INFO_num(stack); ++i) {
1853 : X509_INFO *info = sk_X509_INFO_value(stack, i);
1854 : if (info->x509) {
1855 : X509_STORE_add_cert(ssl_ctx->cert_store,
1856 : info->x509);
1857 : }
1858 : if (info->crl) {
1859 : X509_STORE_add_crl(ssl_ctx->cert_store,
1860 : info->crl);
1861 : }
1862 : }
1863 : sk_X509_INFO_pop_free(stack, X509_INFO_free);
1864 : SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1865 : return 0;
1866 : }
1867 : #endif /* ANDROID */
1868 :
1869 : #ifdef CONFIG_NATIVE_WINDOWS
1870 : if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
1871 : 0) {
1872 : wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
1873 : "system certificate store");
1874 : return 0;
1875 : }
1876 : #endif /* CONFIG_NATIVE_WINDOWS */
1877 :
1878 285 : if (ca_cert || ca_path) {
1879 : #ifndef OPENSSL_NO_STDIO
1880 536 : if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
1881 : 1) {
1882 8 : tls_show_errors(MSG_WARNING, __func__,
1883 : "Failed to load root certificates");
1884 16 : if (ca_cert &&
1885 8 : tls_load_ca_der(data, ca_cert) == 0) {
1886 8 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
1887 : "DER format CA certificate",
1888 : __func__);
1889 : } else
1890 0 : return -1;
1891 : } else {
1892 260 : wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1893 : "certificate(s) loaded");
1894 260 : tls_get_errors(data);
1895 : }
1896 : #else /* OPENSSL_NO_STDIO */
1897 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
1898 : __func__);
1899 : return -1;
1900 : #endif /* OPENSSL_NO_STDIO */
1901 : } else {
1902 : /* No ca_cert configured - do not try to verify server
1903 : * certificate */
1904 17 : conn->ca_cert_verify = 0;
1905 : }
1906 :
1907 285 : return 0;
1908 : }
1909 :
1910 :
1911 83 : static int tls_global_ca_cert(struct tls_data *data, const char *ca_cert)
1912 : {
1913 83 : SSL_CTX *ssl_ctx = data->ssl;
1914 :
1915 83 : if (ca_cert) {
1916 83 : if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
1917 : {
1918 0 : tls_show_errors(MSG_WARNING, __func__,
1919 : "Failed to load root certificates");
1920 0 : return -1;
1921 : }
1922 :
1923 83 : wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1924 : "certificate(s) loaded");
1925 :
1926 : #ifndef OPENSSL_NO_STDIO
1927 : /* Add the same CAs to the client certificate requests */
1928 83 : SSL_CTX_set_client_CA_list(ssl_ctx,
1929 : SSL_load_client_CA_file(ca_cert));
1930 : #endif /* OPENSSL_NO_STDIO */
1931 : }
1932 :
1933 83 : return 0;
1934 : }
1935 :
1936 :
1937 80 : int tls_global_set_verify(void *ssl_ctx, int check_crl)
1938 : {
1939 : int flags;
1940 :
1941 80 : if (check_crl) {
1942 3 : struct tls_data *data = ssl_ctx;
1943 3 : X509_STORE *cs = SSL_CTX_get_cert_store(data->ssl);
1944 3 : if (cs == NULL) {
1945 0 : tls_show_errors(MSG_INFO, __func__, "Failed to get "
1946 : "certificate store when enabling "
1947 : "check_crl");
1948 0 : return -1;
1949 : }
1950 3 : flags = X509_V_FLAG_CRL_CHECK;
1951 3 : if (check_crl == 2)
1952 1 : flags |= X509_V_FLAG_CRL_CHECK_ALL;
1953 3 : X509_STORE_set_flags(cs, flags);
1954 : }
1955 80 : return 0;
1956 : }
1957 :
1958 :
1959 298 : static int tls_connection_set_subject_match(struct tls_connection *conn,
1960 : const char *subject_match,
1961 : const char *altsubject_match,
1962 : const char *suffix_match,
1963 : const char *domain_match)
1964 : {
1965 298 : os_free(conn->subject_match);
1966 298 : conn->subject_match = NULL;
1967 298 : if (subject_match) {
1968 6 : conn->subject_match = os_strdup(subject_match);
1969 6 : if (conn->subject_match == NULL)
1970 1 : return -1;
1971 : }
1972 :
1973 297 : os_free(conn->altsubject_match);
1974 297 : conn->altsubject_match = NULL;
1975 297 : if (altsubject_match) {
1976 11 : conn->altsubject_match = os_strdup(altsubject_match);
1977 11 : if (conn->altsubject_match == NULL)
1978 1 : return -1;
1979 : }
1980 :
1981 296 : os_free(conn->suffix_match);
1982 296 : conn->suffix_match = NULL;
1983 296 : if (suffix_match) {
1984 15 : conn->suffix_match = os_strdup(suffix_match);
1985 15 : if (conn->suffix_match == NULL)
1986 1 : return -1;
1987 : }
1988 :
1989 295 : os_free(conn->domain_match);
1990 295 : conn->domain_match = NULL;
1991 295 : if (domain_match) {
1992 6 : conn->domain_match = os_strdup(domain_match);
1993 6 : if (conn->domain_match == NULL)
1994 1 : return -1;
1995 : }
1996 :
1997 294 : return 0;
1998 : }
1999 :
2000 :
2001 743 : static void tls_set_conn_flags(SSL *ssl, unsigned int flags)
2002 : {
2003 : #ifdef SSL_OP_NO_TICKET
2004 743 : if (flags & TLS_CONN_DISABLE_SESSION_TICKET)
2005 687 : SSL_set_options(ssl, SSL_OP_NO_TICKET);
2006 : #ifdef SSL_clear_options
2007 : else
2008 56 : SSL_clear_options(ssl, SSL_OP_NO_TICKET);
2009 : #endif /* SSL_clear_options */
2010 : #endif /* SSL_OP_NO_TICKET */
2011 :
2012 : #ifdef SSL_OP_NO_TLSv1
2013 743 : if (flags & TLS_CONN_DISABLE_TLSv1_0)
2014 2 : SSL_set_options(ssl, SSL_OP_NO_TLSv1);
2015 : else
2016 741 : SSL_clear_options(ssl, SSL_OP_NO_TLSv1);
2017 : #endif /* SSL_OP_NO_TLSv1 */
2018 : #ifdef SSL_OP_NO_TLSv1_1
2019 743 : if (flags & TLS_CONN_DISABLE_TLSv1_1)
2020 2 : SSL_set_options(ssl, SSL_OP_NO_TLSv1_1);
2021 : else
2022 741 : SSL_clear_options(ssl, SSL_OP_NO_TLSv1_1);
2023 : #endif /* SSL_OP_NO_TLSv1_1 */
2024 : #ifdef SSL_OP_NO_TLSv1_2
2025 743 : if (flags & TLS_CONN_DISABLE_TLSv1_2)
2026 2 : SSL_set_options(ssl, SSL_OP_NO_TLSv1_2);
2027 : else
2028 741 : SSL_clear_options(ssl, SSL_OP_NO_TLSv1_2);
2029 : #endif /* SSL_OP_NO_TLSv1_2 */
2030 743 : }
2031 :
2032 :
2033 454 : int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
2034 : int verify_peer, unsigned int flags,
2035 : const u8 *session_ctx, size_t session_ctx_len)
2036 : {
2037 : static int counter = 0;
2038 454 : struct tls_data *data = ssl_ctx;
2039 :
2040 454 : if (conn == NULL)
2041 0 : return -1;
2042 :
2043 454 : if (verify_peer) {
2044 53 : conn->ca_cert_verify = 1;
2045 53 : SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
2046 : SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
2047 : SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
2048 : } else {
2049 401 : conn->ca_cert_verify = 0;
2050 401 : SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
2051 : }
2052 :
2053 454 : tls_set_conn_flags(conn->ssl, flags);
2054 454 : conn->flags = flags;
2055 :
2056 454 : SSL_set_accept_state(conn->ssl);
2057 :
2058 454 : if (data->tls_session_lifetime == 0) {
2059 : /*
2060 : * Set session id context to a unique value to make sure
2061 : * session resumption cannot be used either through session
2062 : * caching or TLS ticket extension.
2063 : */
2064 424 : counter++;
2065 424 : SSL_set_session_id_context(conn->ssl,
2066 : (const unsigned char *) &counter,
2067 : sizeof(counter));
2068 30 : } else if (session_ctx) {
2069 30 : SSL_set_session_id_context(conn->ssl, session_ctx,
2070 : session_ctx_len);
2071 : }
2072 :
2073 454 : return 0;
2074 : }
2075 :
2076 :
2077 291 : static int tls_connection_client_cert(struct tls_connection *conn,
2078 : const char *client_cert,
2079 : const u8 *client_cert_blob,
2080 : size_t client_cert_blob_len)
2081 : {
2082 291 : if (client_cert == NULL && client_cert_blob == NULL)
2083 269 : return 0;
2084 :
2085 23 : if (client_cert_blob &&
2086 1 : SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
2087 : client_cert_blob_len) == 1) {
2088 1 : wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
2089 : "OK");
2090 1 : return 0;
2091 21 : } else if (client_cert_blob) {
2092 0 : tls_show_errors(MSG_DEBUG, __func__,
2093 : "SSL_use_certificate_ASN1 failed");
2094 : }
2095 :
2096 21 : if (client_cert == NULL)
2097 0 : return -1;
2098 :
2099 : #ifdef ANDROID
2100 : if (os_strncmp("keystore://", client_cert, 11) == 0) {
2101 : BIO *bio = BIO_from_keystore(&client_cert[11]);
2102 : X509 *x509 = NULL;
2103 : int ret = -1;
2104 : if (bio) {
2105 : x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
2106 : BIO_free(bio);
2107 : }
2108 : if (x509) {
2109 : if (SSL_use_certificate(conn->ssl, x509) == 1)
2110 : ret = 0;
2111 : X509_free(x509);
2112 : }
2113 : return ret;
2114 : }
2115 : #endif /* ANDROID */
2116 :
2117 : #ifndef OPENSSL_NO_STDIO
2118 21 : if (SSL_use_certificate_file(conn->ssl, client_cert,
2119 : SSL_FILETYPE_ASN1) == 1) {
2120 0 : wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
2121 : " --> OK");
2122 0 : return 0;
2123 : }
2124 :
2125 21 : if (SSL_use_certificate_file(conn->ssl, client_cert,
2126 : SSL_FILETYPE_PEM) == 1) {
2127 21 : ERR_clear_error();
2128 21 : wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
2129 : " --> OK");
2130 21 : return 0;
2131 : }
2132 :
2133 0 : tls_show_errors(MSG_DEBUG, __func__,
2134 : "SSL_use_certificate_file failed");
2135 : #else /* OPENSSL_NO_STDIO */
2136 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
2137 : #endif /* OPENSSL_NO_STDIO */
2138 :
2139 0 : return -1;
2140 : }
2141 :
2142 :
2143 83 : static int tls_global_client_cert(struct tls_data *data,
2144 : const char *client_cert)
2145 : {
2146 : #ifndef OPENSSL_NO_STDIO
2147 83 : SSL_CTX *ssl_ctx = data->ssl;
2148 :
2149 83 : if (client_cert == NULL)
2150 1 : return 0;
2151 :
2152 82 : if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
2153 82 : SSL_FILETYPE_ASN1) != 1 &&
2154 82 : SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 &&
2155 0 : SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
2156 : SSL_FILETYPE_PEM) != 1) {
2157 0 : tls_show_errors(MSG_INFO, __func__,
2158 : "Failed to load client certificate");
2159 0 : return -1;
2160 : }
2161 82 : return 0;
2162 : #else /* OPENSSL_NO_STDIO */
2163 : if (client_cert == NULL)
2164 : return 0;
2165 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
2166 : return -1;
2167 : #endif /* OPENSSL_NO_STDIO */
2168 : }
2169 :
2170 :
2171 0 : static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
2172 : {
2173 0 : if (password == NULL) {
2174 0 : return 0;
2175 : }
2176 0 : os_strlcpy(buf, (char *) password, size);
2177 0 : return os_strlen(buf);
2178 : }
2179 :
2180 :
2181 : #ifdef PKCS12_FUNCS
2182 20 : static int tls_parse_pkcs12(struct tls_data *data, SSL *ssl, PKCS12 *p12,
2183 : const char *passwd)
2184 : {
2185 : EVP_PKEY *pkey;
2186 : X509 *cert;
2187 : STACK_OF(X509) *certs;
2188 20 : int res = 0;
2189 : char buf[256];
2190 :
2191 20 : pkey = NULL;
2192 20 : cert = NULL;
2193 20 : certs = NULL;
2194 20 : if (!passwd)
2195 2 : passwd = "";
2196 20 : if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
2197 1 : tls_show_errors(MSG_DEBUG, __func__,
2198 : "Failed to parse PKCS12 file");
2199 1 : PKCS12_free(p12);
2200 1 : return -1;
2201 : }
2202 19 : wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
2203 :
2204 19 : if (cert) {
2205 19 : X509_NAME_oneline(X509_get_subject_name(cert), buf,
2206 : sizeof(buf));
2207 19 : wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
2208 : "subject='%s'", buf);
2209 19 : if (ssl) {
2210 18 : if (SSL_use_certificate(ssl, cert) != 1)
2211 0 : res = -1;
2212 : } else {
2213 1 : if (SSL_CTX_use_certificate(data->ssl, cert) != 1)
2214 0 : res = -1;
2215 : }
2216 19 : X509_free(cert);
2217 : }
2218 :
2219 19 : if (pkey) {
2220 19 : wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
2221 19 : if (ssl) {
2222 18 : if (SSL_use_PrivateKey(ssl, pkey) != 1)
2223 0 : res = -1;
2224 : } else {
2225 1 : if (SSL_CTX_use_PrivateKey(data->ssl, pkey) != 1)
2226 0 : res = -1;
2227 : }
2228 19 : EVP_PKEY_free(pkey);
2229 : }
2230 :
2231 19 : if (certs) {
2232 : #if OPENSSL_VERSION_NUMBER >= 0x10002000L
2233 4 : SSL_clear_chain_certs(ssl);
2234 4 : while ((cert = sk_X509_pop(certs)) != NULL) {
2235 4 : X509_NAME_oneline(X509_get_subject_name(cert), buf,
2236 : sizeof(buf));
2237 4 : wpa_printf(MSG_DEBUG, "TLS: additional certificate"
2238 : " from PKCS12: subject='%s'", buf);
2239 4 : if (SSL_add1_chain_cert(ssl, cert) != 1) {
2240 0 : tls_show_errors(MSG_DEBUG, __func__,
2241 : "Failed to add additional certificate");
2242 0 : res = -1;
2243 0 : break;
2244 : }
2245 : }
2246 : if (!res) {
2247 : /* Try to continue anyway */
2248 : }
2249 4 : sk_X509_free(certs);
2250 : #ifndef OPENSSL_IS_BORINGSSL
2251 4 : res = SSL_build_cert_chain(ssl,
2252 : SSL_BUILD_CHAIN_FLAG_CHECK |
2253 : SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR);
2254 4 : if (!res) {
2255 0 : tls_show_errors(MSG_DEBUG, __func__,
2256 : "Failed to build certificate chain");
2257 4 : } else if (res == 2) {
2258 2 : wpa_printf(MSG_DEBUG,
2259 : "TLS: Ignore certificate chain verification error when building chain with PKCS#12 extra certificates");
2260 : }
2261 : #endif /* OPENSSL_IS_BORINGSSL */
2262 : /*
2263 : * Try to continue regardless of result since it is possible for
2264 : * the extra certificates not to be required.
2265 : */
2266 4 : res = 0;
2267 : #else /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
2268 : #if OPENSSL_VERSION_NUMBER >= 0x10001000L
2269 : SSL_CTX_clear_extra_chain_certs(data->ssl);
2270 : #endif /* OPENSSL_VERSION_NUMBER >= 0x10001000L */
2271 : while ((cert = sk_X509_pop(certs)) != NULL) {
2272 : X509_NAME_oneline(X509_get_subject_name(cert), buf,
2273 : sizeof(buf));
2274 : wpa_printf(MSG_DEBUG, "TLS: additional certificate"
2275 : " from PKCS12: subject='%s'", buf);
2276 : /*
2277 : * There is no SSL equivalent for the chain cert - so
2278 : * always add it to the context...
2279 : */
2280 : if (SSL_CTX_add_extra_chain_cert(data->ssl, cert) != 1)
2281 : {
2282 : res = -1;
2283 : break;
2284 : }
2285 : }
2286 : sk_X509_free(certs);
2287 : #endif /* OPENSSL_VERSION_NUMBER >= 0x10002000L */
2288 : }
2289 :
2290 19 : PKCS12_free(p12);
2291 :
2292 19 : if (res < 0)
2293 0 : tls_get_errors(data);
2294 :
2295 19 : return res;
2296 : }
2297 : #endif /* PKCS12_FUNCS */
2298 :
2299 :
2300 19 : static int tls_read_pkcs12(struct tls_data *data, SSL *ssl,
2301 : const char *private_key, const char *passwd)
2302 : {
2303 : #ifdef PKCS12_FUNCS
2304 : FILE *f;
2305 : PKCS12 *p12;
2306 :
2307 19 : f = fopen(private_key, "rb");
2308 19 : if (f == NULL)
2309 0 : return -1;
2310 :
2311 19 : p12 = d2i_PKCS12_fp(f, NULL);
2312 19 : fclose(f);
2313 :
2314 19 : if (p12 == NULL) {
2315 0 : tls_show_errors(MSG_INFO, __func__,
2316 : "Failed to use PKCS#12 file");
2317 0 : return -1;
2318 : }
2319 :
2320 19 : return tls_parse_pkcs12(data, ssl, p12, passwd);
2321 :
2322 : #else /* PKCS12_FUNCS */
2323 : wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
2324 : "p12/pfx files");
2325 : return -1;
2326 : #endif /* PKCS12_FUNCS */
2327 : }
2328 :
2329 :
2330 1 : static int tls_read_pkcs12_blob(struct tls_data *data, SSL *ssl,
2331 : const u8 *blob, size_t len, const char *passwd)
2332 : {
2333 : #ifdef PKCS12_FUNCS
2334 : PKCS12 *p12;
2335 :
2336 1 : p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len);
2337 1 : if (p12 == NULL) {
2338 0 : tls_show_errors(MSG_INFO, __func__,
2339 : "Failed to use PKCS#12 blob");
2340 0 : return -1;
2341 : }
2342 :
2343 1 : return tls_parse_pkcs12(data, ssl, p12, passwd);
2344 :
2345 : #else /* PKCS12_FUNCS */
2346 : wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
2347 : "p12/pfx blobs");
2348 : return -1;
2349 : #endif /* PKCS12_FUNCS */
2350 : }
2351 :
2352 :
2353 : #ifndef OPENSSL_NO_ENGINE
2354 : static int tls_engine_get_cert(struct tls_connection *conn,
2355 : const char *cert_id,
2356 : X509 **cert)
2357 : {
2358 : /* this runs after the private key is loaded so no PIN is required */
2359 : struct {
2360 : const char *cert_id;
2361 : X509 *cert;
2362 : } params;
2363 : params.cert_id = cert_id;
2364 : params.cert = NULL;
2365 :
2366 : if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL",
2367 : 0, ¶ms, NULL, 1)) {
2368 : unsigned long err = ERR_get_error();
2369 :
2370 : wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id"
2371 : " '%s' [%s]", cert_id,
2372 : ERR_error_string(err, NULL));
2373 : if (tls_is_pin_error(err))
2374 : return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN;
2375 : return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
2376 : }
2377 : if (!params.cert) {
2378 : wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id"
2379 : " '%s'", cert_id);
2380 : return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
2381 : }
2382 : *cert = params.cert;
2383 : return 0;
2384 : }
2385 : #endif /* OPENSSL_NO_ENGINE */
2386 :
2387 :
2388 0 : static int tls_connection_engine_client_cert(struct tls_connection *conn,
2389 : const char *cert_id)
2390 : {
2391 : #ifndef OPENSSL_NO_ENGINE
2392 : X509 *cert;
2393 :
2394 : if (tls_engine_get_cert(conn, cert_id, &cert))
2395 : return -1;
2396 :
2397 : if (!SSL_use_certificate(conn->ssl, cert)) {
2398 : tls_show_errors(MSG_ERROR, __func__,
2399 : "SSL_use_certificate failed");
2400 : X509_free(cert);
2401 : return -1;
2402 : }
2403 : X509_free(cert);
2404 : wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> "
2405 : "OK");
2406 : return 0;
2407 :
2408 : #else /* OPENSSL_NO_ENGINE */
2409 0 : return -1;
2410 : #endif /* OPENSSL_NO_ENGINE */
2411 : }
2412 :
2413 :
2414 0 : static int tls_connection_engine_ca_cert(struct tls_data *data,
2415 : struct tls_connection *conn,
2416 : const char *ca_cert_id)
2417 : {
2418 : #ifndef OPENSSL_NO_ENGINE
2419 : X509 *cert;
2420 : SSL_CTX *ssl_ctx = data->ssl;
2421 : X509_STORE *store;
2422 :
2423 : if (tls_engine_get_cert(conn, ca_cert_id, &cert))
2424 : return -1;
2425 :
2426 : /* start off the same as tls_connection_ca_cert */
2427 : store = X509_STORE_new();
2428 : if (store == NULL) {
2429 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
2430 : "certificate store", __func__);
2431 : X509_free(cert);
2432 : return -1;
2433 : }
2434 : SSL_CTX_set_cert_store(ssl_ctx, store);
2435 : if (!X509_STORE_add_cert(store, cert)) {
2436 : unsigned long err = ERR_peek_error();
2437 : tls_show_errors(MSG_WARNING, __func__,
2438 : "Failed to add CA certificate from engine "
2439 : "to certificate store");
2440 : if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
2441 : ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
2442 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert"
2443 : " already in hash table error",
2444 : __func__);
2445 : } else {
2446 : X509_free(cert);
2447 : return -1;
2448 : }
2449 : }
2450 : X509_free(cert);
2451 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
2452 : "to certificate store", __func__);
2453 : SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
2454 : conn->ca_cert_verify = 1;
2455 :
2456 : return 0;
2457 :
2458 : #else /* OPENSSL_NO_ENGINE */
2459 0 : return -1;
2460 : #endif /* OPENSSL_NO_ENGINE */
2461 : }
2462 :
2463 :
2464 0 : static int tls_connection_engine_private_key(struct tls_connection *conn)
2465 : {
2466 : #ifndef OPENSSL_NO_ENGINE
2467 : if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
2468 : tls_show_errors(MSG_ERROR, __func__,
2469 : "ENGINE: cannot use private key for TLS");
2470 : return -1;
2471 : }
2472 : if (!SSL_check_private_key(conn->ssl)) {
2473 : tls_show_errors(MSG_INFO, __func__,
2474 : "Private key failed verification");
2475 : return -1;
2476 : }
2477 : return 0;
2478 : #else /* OPENSSL_NO_ENGINE */
2479 0 : wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
2480 : "engine support was not compiled in");
2481 0 : return -1;
2482 : #endif /* OPENSSL_NO_ENGINE */
2483 : }
2484 :
2485 :
2486 291 : static int tls_connection_private_key(struct tls_data *data,
2487 : struct tls_connection *conn,
2488 : const char *private_key,
2489 : const char *private_key_passwd,
2490 : const u8 *private_key_blob,
2491 : size_t private_key_blob_len)
2492 : {
2493 291 : SSL_CTX *ssl_ctx = data->ssl;
2494 : char *passwd;
2495 : int ok;
2496 :
2497 291 : if (private_key == NULL && private_key_blob == NULL)
2498 250 : return 0;
2499 :
2500 41 : if (private_key_passwd) {
2501 18 : passwd = os_strdup(private_key_passwd);
2502 18 : if (passwd == NULL)
2503 0 : return -1;
2504 : } else
2505 23 : passwd = NULL;
2506 :
2507 41 : SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
2508 41 : SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
2509 :
2510 41 : ok = 0;
2511 41 : while (private_key_blob) {
2512 2 : if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
2513 : (u8 *) private_key_blob,
2514 : private_key_blob_len) == 1) {
2515 1 : wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
2516 : "ASN1(EVP_PKEY_RSA) --> OK");
2517 1 : ok = 1;
2518 1 : break;
2519 : }
2520 :
2521 1 : if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
2522 : (u8 *) private_key_blob,
2523 : private_key_blob_len) == 1) {
2524 0 : wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
2525 : "ASN1(EVP_PKEY_DSA) --> OK");
2526 0 : ok = 1;
2527 0 : break;
2528 : }
2529 :
2530 1 : if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
2531 : (u8 *) private_key_blob,
2532 : private_key_blob_len) == 1) {
2533 0 : wpa_printf(MSG_DEBUG, "OpenSSL: "
2534 : "SSL_use_RSAPrivateKey_ASN1 --> OK");
2535 0 : ok = 1;
2536 0 : break;
2537 : }
2538 :
2539 1 : if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob,
2540 : private_key_blob_len, passwd) == 0) {
2541 1 : wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
2542 : "OK");
2543 1 : ok = 1;
2544 1 : break;
2545 : }
2546 :
2547 0 : break;
2548 : }
2549 :
2550 80 : while (!ok && private_key) {
2551 : #ifndef OPENSSL_NO_STDIO
2552 39 : if (SSL_use_PrivateKey_file(conn->ssl, private_key,
2553 : SSL_FILETYPE_ASN1) == 1) {
2554 0 : wpa_printf(MSG_DEBUG, "OpenSSL: "
2555 : "SSL_use_PrivateKey_File (DER) --> OK");
2556 0 : ok = 1;
2557 0 : break;
2558 : }
2559 :
2560 39 : if (SSL_use_PrivateKey_file(conn->ssl, private_key,
2561 : SSL_FILETYPE_PEM) == 1) {
2562 21 : wpa_printf(MSG_DEBUG, "OpenSSL: "
2563 : "SSL_use_PrivateKey_File (PEM) --> OK");
2564 21 : ok = 1;
2565 21 : break;
2566 : }
2567 : #else /* OPENSSL_NO_STDIO */
2568 : wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
2569 : __func__);
2570 : #endif /* OPENSSL_NO_STDIO */
2571 :
2572 18 : if (tls_read_pkcs12(data, conn->ssl, private_key, passwd)
2573 : == 0) {
2574 17 : wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
2575 : "--> OK");
2576 17 : ok = 1;
2577 17 : break;
2578 : }
2579 :
2580 1 : if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
2581 0 : wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
2582 : "access certificate store --> OK");
2583 0 : ok = 1;
2584 0 : break;
2585 : }
2586 :
2587 1 : break;
2588 : }
2589 :
2590 41 : if (!ok) {
2591 1 : tls_show_errors(MSG_INFO, __func__,
2592 : "Failed to load private key");
2593 1 : os_free(passwd);
2594 1 : return -1;
2595 : }
2596 40 : ERR_clear_error();
2597 40 : SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
2598 40 : os_free(passwd);
2599 :
2600 40 : if (!SSL_check_private_key(conn->ssl)) {
2601 0 : tls_show_errors(MSG_INFO, __func__, "Private key failed "
2602 : "verification");
2603 0 : return -1;
2604 : }
2605 :
2606 40 : wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
2607 40 : return 0;
2608 : }
2609 :
2610 :
2611 83 : static int tls_global_private_key(struct tls_data *data,
2612 : const char *private_key,
2613 : const char *private_key_passwd)
2614 : {
2615 83 : SSL_CTX *ssl_ctx = data->ssl;
2616 : char *passwd;
2617 :
2618 83 : if (private_key == NULL)
2619 0 : return 0;
2620 :
2621 83 : if (private_key_passwd) {
2622 0 : passwd = os_strdup(private_key_passwd);
2623 0 : if (passwd == NULL)
2624 0 : return -1;
2625 : } else
2626 83 : passwd = NULL;
2627 :
2628 83 : SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
2629 83 : SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
2630 83 : if (
2631 : #ifndef OPENSSL_NO_STDIO
2632 83 : SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
2633 83 : SSL_FILETYPE_ASN1) != 1 &&
2634 83 : SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
2635 1 : SSL_FILETYPE_PEM) != 1 &&
2636 : #endif /* OPENSSL_NO_STDIO */
2637 1 : tls_read_pkcs12(data, NULL, private_key, passwd)) {
2638 0 : tls_show_errors(MSG_INFO, __func__,
2639 : "Failed to load private key");
2640 0 : os_free(passwd);
2641 0 : ERR_clear_error();
2642 0 : return -1;
2643 : }
2644 83 : os_free(passwd);
2645 83 : ERR_clear_error();
2646 83 : SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
2647 :
2648 83 : if (!SSL_CTX_check_private_key(ssl_ctx)) {
2649 0 : tls_show_errors(MSG_INFO, __func__,
2650 : "Private key failed verification");
2651 0 : return -1;
2652 : }
2653 :
2654 83 : return 0;
2655 : }
2656 :
2657 :
2658 290 : static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
2659 : {
2660 : #ifdef OPENSSL_NO_DH
2661 : if (dh_file == NULL)
2662 : return 0;
2663 : wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
2664 : "dh_file specified");
2665 : return -1;
2666 : #else /* OPENSSL_NO_DH */
2667 : DH *dh;
2668 : BIO *bio;
2669 :
2670 : /* TODO: add support for dh_blob */
2671 290 : if (dh_file == NULL)
2672 288 : return 0;
2673 2 : if (conn == NULL)
2674 0 : return -1;
2675 :
2676 2 : bio = BIO_new_file(dh_file, "r");
2677 2 : if (bio == NULL) {
2678 0 : wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
2679 : dh_file, ERR_error_string(ERR_get_error(), NULL));
2680 0 : return -1;
2681 : }
2682 2 : dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
2683 2 : BIO_free(bio);
2684 : #ifndef OPENSSL_NO_DSA
2685 2 : while (dh == NULL) {
2686 : DSA *dsa;
2687 1 : wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
2688 : " trying to parse as DSA params", dh_file,
2689 : ERR_error_string(ERR_get_error(), NULL));
2690 1 : bio = BIO_new_file(dh_file, "r");
2691 1 : if (bio == NULL)
2692 0 : break;
2693 1 : dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
2694 1 : BIO_free(bio);
2695 1 : if (!dsa) {
2696 0 : wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
2697 : "'%s': %s", dh_file,
2698 : ERR_error_string(ERR_get_error(), NULL));
2699 0 : break;
2700 : }
2701 :
2702 1 : wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
2703 1 : dh = DSA_dup_DH(dsa);
2704 1 : DSA_free(dsa);
2705 1 : if (dh == NULL) {
2706 0 : wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
2707 : "params into DH params");
2708 0 : break;
2709 : }
2710 1 : break;
2711 : }
2712 : #endif /* !OPENSSL_NO_DSA */
2713 2 : if (dh == NULL) {
2714 0 : wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
2715 : "'%s'", dh_file);
2716 0 : return -1;
2717 : }
2718 :
2719 2 : if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
2720 0 : wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
2721 : "%s", dh_file,
2722 : ERR_error_string(ERR_get_error(), NULL));
2723 0 : DH_free(dh);
2724 0 : return -1;
2725 : }
2726 2 : DH_free(dh);
2727 2 : return 0;
2728 : #endif /* OPENSSL_NO_DH */
2729 : }
2730 :
2731 :
2732 83 : static int tls_global_dh(struct tls_data *data, const char *dh_file)
2733 : {
2734 : #ifdef OPENSSL_NO_DH
2735 : if (dh_file == NULL)
2736 : return 0;
2737 : wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
2738 : "dh_file specified");
2739 : return -1;
2740 : #else /* OPENSSL_NO_DH */
2741 83 : SSL_CTX *ssl_ctx = data->ssl;
2742 : DH *dh;
2743 : BIO *bio;
2744 :
2745 : /* TODO: add support for dh_blob */
2746 83 : if (dh_file == NULL)
2747 64 : return 0;
2748 19 : if (ssl_ctx == NULL)
2749 0 : return -1;
2750 :
2751 19 : bio = BIO_new_file(dh_file, "r");
2752 19 : if (bio == NULL) {
2753 1 : wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
2754 : dh_file, ERR_error_string(ERR_get_error(), NULL));
2755 1 : return -1;
2756 : }
2757 18 : dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
2758 18 : BIO_free(bio);
2759 : #ifndef OPENSSL_NO_DSA
2760 18 : while (dh == NULL) {
2761 : DSA *dsa;
2762 2 : wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
2763 : " trying to parse as DSA params", dh_file,
2764 : ERR_error_string(ERR_get_error(), NULL));
2765 2 : bio = BIO_new_file(dh_file, "r");
2766 2 : if (bio == NULL)
2767 0 : break;
2768 2 : dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
2769 2 : BIO_free(bio);
2770 2 : if (!dsa) {
2771 1 : wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
2772 : "'%s': %s", dh_file,
2773 : ERR_error_string(ERR_get_error(), NULL));
2774 1 : break;
2775 : }
2776 :
2777 1 : wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
2778 1 : dh = DSA_dup_DH(dsa);
2779 1 : DSA_free(dsa);
2780 1 : if (dh == NULL) {
2781 0 : wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
2782 : "params into DH params");
2783 0 : break;
2784 : }
2785 1 : break;
2786 : }
2787 : #endif /* !OPENSSL_NO_DSA */
2788 18 : if (dh == NULL) {
2789 1 : wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
2790 : "'%s'", dh_file);
2791 1 : return -1;
2792 : }
2793 :
2794 17 : if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) {
2795 0 : wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
2796 : "%s", dh_file,
2797 : ERR_error_string(ERR_get_error(), NULL));
2798 0 : DH_free(dh);
2799 0 : return -1;
2800 : }
2801 17 : DH_free(dh);
2802 17 : return 0;
2803 : #endif /* OPENSSL_NO_DH */
2804 : }
2805 :
2806 :
2807 535 : int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn,
2808 : struct tls_random *keys)
2809 : {
2810 : SSL *ssl;
2811 :
2812 535 : if (conn == NULL || keys == NULL)
2813 0 : return -1;
2814 535 : ssl = conn->ssl;
2815 : #if OPENSSL_VERSION_NUMBER < 0x10100000L
2816 535 : if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL)
2817 0 : return -1;
2818 :
2819 535 : os_memset(keys, 0, sizeof(*keys));
2820 535 : keys->client_random = ssl->s3->client_random;
2821 535 : keys->client_random_len = SSL3_RANDOM_SIZE;
2822 535 : keys->server_random = ssl->s3->server_random;
2823 535 : keys->server_random_len = SSL3_RANDOM_SIZE;
2824 : #else
2825 : if (ssl == NULL)
2826 : return -1;
2827 :
2828 : os_memset(keys, 0, sizeof(*keys));
2829 : keys->client_random = conn->client_random;
2830 : keys->client_random_len = SSL_get_client_random(
2831 : ssl, conn->client_random, sizeof(conn->client_random));
2832 : keys->server_random = conn->server_random;
2833 : keys->server_random_len = SSL_get_server_random(
2834 : ssl, conn->server_random, sizeof(conn->server_random));
2835 : #endif
2836 :
2837 535 : return 0;
2838 : }
2839 :
2840 :
2841 : #ifndef CONFIG_FIPS
2842 46 : static int openssl_get_keyblock_size(SSL *ssl)
2843 : {
2844 : #if OPENSSL_VERSION_NUMBER < 0x10100000L
2845 : const EVP_CIPHER *c;
2846 : const EVP_MD *h;
2847 : int md_size;
2848 :
2849 92 : if (ssl->enc_read_ctx == NULL || ssl->enc_read_ctx->cipher == NULL ||
2850 46 : ssl->read_hash == NULL)
2851 0 : return -1;
2852 :
2853 46 : c = ssl->enc_read_ctx->cipher;
2854 : #if OPENSSL_VERSION_NUMBER >= 0x00909000L
2855 46 : h = EVP_MD_CTX_md(ssl->read_hash);
2856 : #else
2857 : h = ssl->read_hash;
2858 : #endif
2859 46 : if (h)
2860 46 : md_size = EVP_MD_size(h);
2861 : #if OPENSSL_VERSION_NUMBER >= 0x10000000L
2862 0 : else if (ssl->s3)
2863 0 : md_size = ssl->s3->tmp.new_mac_secret_size;
2864 : #endif
2865 : else
2866 0 : return -1;
2867 :
2868 46 : wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d "
2869 : "IV_len=%d", EVP_CIPHER_key_length(c), md_size,
2870 : EVP_CIPHER_iv_length(c));
2871 92 : return 2 * (EVP_CIPHER_key_length(c) +
2872 46 : md_size +
2873 46 : EVP_CIPHER_iv_length(c));
2874 : #else
2875 : const SSL_CIPHER *ssl_cipher;
2876 : int cipher, digest;
2877 : const EVP_CIPHER *c;
2878 : const EVP_MD *h;
2879 :
2880 : ssl_cipher = SSL_get_current_cipher(ssl);
2881 : if (!ssl_cipher)
2882 : return -1;
2883 : cipher = SSL_CIPHER_get_cipher_nid(ssl_cipher);
2884 : digest = SSL_CIPHER_get_digest_nid(ssl_cipher);
2885 : wpa_printf(MSG_DEBUG, "OpenSSL: cipher nid %d digest nid %d",
2886 : cipher, digest);
2887 : if (cipher < 0 || digest < 0)
2888 : return -1;
2889 : c = EVP_get_cipherbynid(cipher);
2890 : h = EVP_get_digestbynid(digest);
2891 : if (!c || !h)
2892 : return -1;
2893 :
2894 : wpa_printf(MSG_DEBUG,
2895 : "OpenSSL: keyblock size: key_len=%d MD_size=%d IV_len=%d",
2896 : EVP_CIPHER_key_length(c), EVP_MD_size(h),
2897 : EVP_CIPHER_iv_length(c));
2898 : return 2 * (EVP_CIPHER_key_length(c) + EVP_MD_size(h) +
2899 : EVP_CIPHER_iv_length(c));
2900 : #endif
2901 : }
2902 : #endif /* CONFIG_FIPS */
2903 :
2904 :
2905 46 : static int openssl_tls_prf(struct tls_connection *conn,
2906 : const char *label, int server_random_first,
2907 : int skip_keyblock, u8 *out, size_t out_len)
2908 : {
2909 : #ifdef CONFIG_FIPS
2910 : wpa_printf(MSG_ERROR, "OpenSSL: TLS keys cannot be exported in FIPS "
2911 : "mode");
2912 : return -1;
2913 : #else /* CONFIG_FIPS */
2914 : #if OPENSSL_VERSION_NUMBER < 0x10100000L
2915 : SSL *ssl;
2916 : u8 *rnd;
2917 46 : int ret = -1;
2918 46 : int skip = 0;
2919 46 : u8 *tmp_out = NULL;
2920 46 : u8 *_out = out;
2921 : const char *ver;
2922 :
2923 : /*
2924 : * TLS library did not support key generation, so get the needed TLS
2925 : * session parameters and use an internal implementation of TLS PRF to
2926 : * derive the key.
2927 : */
2928 :
2929 46 : if (conn == NULL)
2930 0 : return -1;
2931 46 : ssl = conn->ssl;
2932 92 : if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL ||
2933 46 : ssl->session->master_key_length <= 0)
2934 0 : return -1;
2935 46 : ver = SSL_get_version(ssl);
2936 :
2937 46 : if (skip_keyblock) {
2938 46 : skip = openssl_get_keyblock_size(ssl);
2939 46 : if (skip < 0)
2940 0 : return -1;
2941 46 : tmp_out = os_malloc(skip + out_len);
2942 46 : if (!tmp_out)
2943 0 : return -1;
2944 46 : _out = tmp_out;
2945 : }
2946 :
2947 46 : rnd = os_malloc(2 * SSL3_RANDOM_SIZE);
2948 46 : if (!rnd) {
2949 1 : os_free(tmp_out);
2950 1 : return -1;
2951 : }
2952 :
2953 45 : if (server_random_first) {
2954 45 : os_memcpy(rnd, ssl->s3->server_random, SSL3_RANDOM_SIZE);
2955 45 : os_memcpy(rnd + SSL3_RANDOM_SIZE, ssl->s3->client_random,
2956 : SSL3_RANDOM_SIZE);
2957 : } else {
2958 0 : os_memcpy(rnd, ssl->s3->client_random, SSL3_RANDOM_SIZE);
2959 0 : os_memcpy(rnd + SSL3_RANDOM_SIZE, ssl->s3->server_random,
2960 : SSL3_RANDOM_SIZE);
2961 : }
2962 :
2963 45 : if (os_strcmp(ver, "TLSv1.2") == 0) {
2964 0 : tls_prf_sha256(ssl->session->master_key,
2965 0 : ssl->session->master_key_length,
2966 : label, rnd, 2 * SSL3_RANDOM_SIZE,
2967 : _out, skip + out_len);
2968 0 : ret = 0;
2969 90 : } else if (tls_prf_sha1_md5(ssl->session->master_key,
2970 45 : ssl->session->master_key_length,
2971 : label, rnd, 2 * SSL3_RANDOM_SIZE,
2972 : _out, skip + out_len) == 0) {
2973 45 : ret = 0;
2974 : }
2975 45 : os_free(rnd);
2976 45 : if (ret == 0 && skip_keyblock)
2977 45 : os_memcpy(out, _out + skip, out_len);
2978 45 : bin_clear_free(tmp_out, skip);
2979 :
2980 45 : return ret;
2981 : #else
2982 : SSL *ssl;
2983 : SSL_SESSION *sess;
2984 : u8 *rnd;
2985 : int ret = -1;
2986 : int skip = 0;
2987 : u8 *tmp_out = NULL;
2988 : u8 *_out = out;
2989 : unsigned char client_random[SSL3_RANDOM_SIZE];
2990 : unsigned char server_random[SSL3_RANDOM_SIZE];
2991 : unsigned char master_key[64];
2992 : size_t master_key_len;
2993 : const char *ver;
2994 :
2995 : /*
2996 : * TLS library did not support key generation, so get the needed TLS
2997 : * session parameters and use an internal implementation of TLS PRF to
2998 : * derive the key.
2999 : */
3000 :
3001 : if (conn == NULL)
3002 : return -1;
3003 : ssl = conn->ssl;
3004 : if (ssl == NULL)
3005 : return -1;
3006 : ver = SSL_get_version(ssl);
3007 : sess = SSL_get_session(ssl);
3008 : if (!ver || !sess)
3009 : return -1;
3010 :
3011 : if (skip_keyblock) {
3012 : skip = openssl_get_keyblock_size(ssl);
3013 : if (skip < 0)
3014 : return -1;
3015 : tmp_out = os_malloc(skip + out_len);
3016 : if (!tmp_out)
3017 : return -1;
3018 : _out = tmp_out;
3019 : }
3020 :
3021 : rnd = os_malloc(2 * SSL3_RANDOM_SIZE);
3022 : if (!rnd) {
3023 : os_free(tmp_out);
3024 : return -1;
3025 : }
3026 :
3027 : SSL_get_client_random(ssl, client_random, sizeof(client_random));
3028 : SSL_get_server_random(ssl, server_random, sizeof(server_random));
3029 : master_key_len = SSL_SESSION_get_master_key(sess, master_key,
3030 : sizeof(master_key));
3031 :
3032 : if (server_random_first) {
3033 : os_memcpy(rnd, server_random, SSL3_RANDOM_SIZE);
3034 : os_memcpy(rnd + SSL3_RANDOM_SIZE, client_random,
3035 : SSL3_RANDOM_SIZE);
3036 : } else {
3037 : os_memcpy(rnd, client_random, SSL3_RANDOM_SIZE);
3038 : os_memcpy(rnd + SSL3_RANDOM_SIZE, server_random,
3039 : SSL3_RANDOM_SIZE);
3040 : }
3041 :
3042 : if (os_strcmp(ver, "TLSv1.2") == 0) {
3043 : tls_prf_sha256(master_key, master_key_len,
3044 : label, rnd, 2 * SSL3_RANDOM_SIZE,
3045 : _out, skip + out_len);
3046 : ret = 0;
3047 : } else if (tls_prf_sha1_md5(master_key, master_key_len,
3048 : label, rnd, 2 * SSL3_RANDOM_SIZE,
3049 : _out, skip + out_len) == 0) {
3050 : ret = 0;
3051 : }
3052 : os_memset(master_key, 0, sizeof(master_key));
3053 : os_free(rnd);
3054 : if (ret == 0 && skip_keyblock)
3055 : os_memcpy(out, _out + skip, out_len);
3056 : bin_clear_free(tmp_out, skip);
3057 :
3058 : return ret;
3059 : #endif
3060 : #endif /* CONFIG_FIPS */
3061 : }
3062 :
3063 :
3064 773 : int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
3065 : const char *label, int server_random_first,
3066 : int skip_keyblock, u8 *out, size_t out_len)
3067 : {
3068 : #if OPENSSL_VERSION_NUMBER >= 0x10001000L
3069 : SSL *ssl;
3070 773 : if (conn == NULL)
3071 0 : return -1;
3072 773 : if (server_random_first || skip_keyblock)
3073 46 : return openssl_tls_prf(conn, label,
3074 : server_random_first, skip_keyblock,
3075 : out, out_len);
3076 727 : ssl = conn->ssl;
3077 727 : if (SSL_export_keying_material(ssl, out, out_len, label,
3078 : os_strlen(label), NULL, 0, 0) == 1) {
3079 727 : wpa_printf(MSG_DEBUG, "OpenSSL: Using internal PRF");
3080 727 : return 0;
3081 : }
3082 : #endif
3083 0 : return openssl_tls_prf(conn, label, server_random_first,
3084 : skip_keyblock, out, out_len);
3085 : }
3086 :
3087 :
3088 : static struct wpabuf *
3089 1564 : openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data,
3090 : int server)
3091 : {
3092 : int res;
3093 : struct wpabuf *out_data;
3094 :
3095 : /*
3096 : * Give TLS handshake data from the server (if available) to OpenSSL
3097 : * for processing.
3098 : */
3099 2802 : if (in_data && wpabuf_len(in_data) > 0 &&
3100 1238 : BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data))
3101 : < 0) {
3102 0 : tls_show_errors(MSG_INFO, __func__,
3103 : "Handshake failed - BIO_write");
3104 0 : return NULL;
3105 : }
3106 :
3107 : /* Initiate TLS handshake or continue the existing handshake */
3108 1564 : if (server)
3109 646 : res = SSL_accept(conn->ssl);
3110 : else
3111 918 : res = SSL_connect(conn->ssl);
3112 1564 : if (res != 1) {
3113 981 : int err = SSL_get_error(conn->ssl, res);
3114 981 : if (err == SSL_ERROR_WANT_READ)
3115 923 : wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
3116 : "more data");
3117 58 : else if (err == SSL_ERROR_WANT_WRITE)
3118 0 : wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
3119 : "write");
3120 : else {
3121 58 : tls_show_errors(MSG_INFO, __func__, "SSL_connect");
3122 58 : conn->failed++;
3123 : }
3124 : }
3125 :
3126 : /* Get the TLS handshake data to be sent to the server */
3127 1564 : res = BIO_ctrl_pending(conn->ssl_out);
3128 1564 : wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
3129 1564 : out_data = wpabuf_alloc(res);
3130 1564 : if (out_data == NULL) {
3131 0 : wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
3132 : "handshake output (%d bytes)", res);
3133 0 : if (BIO_reset(conn->ssl_out) < 0) {
3134 0 : tls_show_errors(MSG_INFO, __func__,
3135 : "BIO_reset failed");
3136 : }
3137 0 : return NULL;
3138 : }
3139 1564 : res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data),
3140 : res);
3141 1564 : if (res < 0) {
3142 0 : tls_show_errors(MSG_INFO, __func__,
3143 : "Handshake failed - BIO_read");
3144 0 : if (BIO_reset(conn->ssl_out) < 0) {
3145 0 : tls_show_errors(MSG_INFO, __func__,
3146 : "BIO_reset failed");
3147 : }
3148 0 : wpabuf_free(out_data);
3149 0 : return NULL;
3150 : }
3151 1564 : wpabuf_put(out_data, res);
3152 :
3153 1564 : return out_data;
3154 : }
3155 :
3156 :
3157 : static struct wpabuf *
3158 291 : openssl_get_appl_data(struct tls_connection *conn, size_t max_len)
3159 : {
3160 : struct wpabuf *appl_data;
3161 : int res;
3162 :
3163 291 : appl_data = wpabuf_alloc(max_len + 100);
3164 291 : if (appl_data == NULL)
3165 0 : return NULL;
3166 :
3167 291 : res = SSL_read(conn->ssl, wpabuf_mhead(appl_data),
3168 291 : wpabuf_size(appl_data));
3169 291 : if (res < 0) {
3170 278 : int err = SSL_get_error(conn->ssl, res);
3171 278 : if (err == SSL_ERROR_WANT_READ ||
3172 : err == SSL_ERROR_WANT_WRITE) {
3173 278 : wpa_printf(MSG_DEBUG, "SSL: No Application Data "
3174 : "included");
3175 : } else {
3176 0 : tls_show_errors(MSG_INFO, __func__,
3177 : "Failed to read possible "
3178 : "Application Data");
3179 : }
3180 278 : wpabuf_free(appl_data);
3181 278 : return NULL;
3182 : }
3183 :
3184 13 : wpabuf_put(appl_data, res);
3185 13 : wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished "
3186 : "message", appl_data);
3187 :
3188 13 : return appl_data;
3189 : }
3190 :
3191 :
3192 : static struct wpabuf *
3193 1564 : openssl_connection_handshake(struct tls_connection *conn,
3194 : const struct wpabuf *in_data,
3195 : struct wpabuf **appl_data, int server)
3196 : {
3197 : struct wpabuf *out_data;
3198 :
3199 1564 : if (appl_data)
3200 918 : *appl_data = NULL;
3201 :
3202 1564 : out_data = openssl_handshake(conn, in_data, server);
3203 1564 : if (out_data == NULL)
3204 0 : return NULL;
3205 1564 : if (conn->invalid_hb_used) {
3206 0 : wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
3207 0 : wpabuf_free(out_data);
3208 0 : return NULL;
3209 : }
3210 :
3211 1564 : if (SSL_is_init_finished(conn->ssl)) {
3212 583 : wpa_printf(MSG_DEBUG,
3213 : "OpenSSL: Handshake finished - resumed=%d",
3214 583 : tls_connection_resumed(conn->ssl_ctx, conn));
3215 583 : if (appl_data && in_data)
3216 291 : *appl_data = openssl_get_appl_data(conn,
3217 : wpabuf_len(in_data));
3218 : }
3219 :
3220 1564 : if (conn->invalid_hb_used) {
3221 0 : wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
3222 0 : if (appl_data) {
3223 0 : wpabuf_free(*appl_data);
3224 0 : *appl_data = NULL;
3225 : }
3226 0 : wpabuf_free(out_data);
3227 0 : return NULL;
3228 : }
3229 :
3230 1564 : return out_data;
3231 : }
3232 :
3233 :
3234 : struct wpabuf *
3235 918 : tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
3236 : const struct wpabuf *in_data,
3237 : struct wpabuf **appl_data)
3238 : {
3239 918 : return openssl_connection_handshake(conn, in_data, appl_data, 0);
3240 : }
3241 :
3242 :
3243 646 : struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
3244 : struct tls_connection *conn,
3245 : const struct wpabuf *in_data,
3246 : struct wpabuf **appl_data)
3247 : {
3248 646 : return openssl_connection_handshake(conn, in_data, appl_data, 1);
3249 : }
3250 :
3251 :
3252 912 : struct wpabuf * tls_connection_encrypt(void *tls_ctx,
3253 : struct tls_connection *conn,
3254 : const struct wpabuf *in_data)
3255 : {
3256 : int res;
3257 : struct wpabuf *buf;
3258 :
3259 912 : if (conn == NULL)
3260 0 : return NULL;
3261 :
3262 : /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
3263 1824 : if ((res = BIO_reset(conn->ssl_in)) < 0 ||
3264 912 : (res = BIO_reset(conn->ssl_out)) < 0) {
3265 0 : tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
3266 0 : return NULL;
3267 : }
3268 912 : res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data));
3269 912 : if (res < 0) {
3270 0 : tls_show_errors(MSG_INFO, __func__,
3271 : "Encryption failed - SSL_write");
3272 0 : return NULL;
3273 : }
3274 :
3275 : /* Read encrypted data to be sent to the server */
3276 912 : buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
3277 912 : if (buf == NULL)
3278 0 : return NULL;
3279 912 : res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf));
3280 912 : if (res < 0) {
3281 0 : tls_show_errors(MSG_INFO, __func__,
3282 : "Encryption failed - BIO_read");
3283 0 : wpabuf_free(buf);
3284 0 : return NULL;
3285 : }
3286 912 : wpabuf_put(buf, res);
3287 :
3288 912 : return buf;
3289 : }
3290 :
3291 :
3292 896 : struct wpabuf * tls_connection_decrypt(void *tls_ctx,
3293 : struct tls_connection *conn,
3294 : const struct wpabuf *in_data)
3295 : {
3296 : int res;
3297 : struct wpabuf *buf;
3298 :
3299 : /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
3300 896 : res = BIO_write(conn->ssl_in, wpabuf_head(in_data),
3301 896 : wpabuf_len(in_data));
3302 896 : if (res < 0) {
3303 0 : tls_show_errors(MSG_INFO, __func__,
3304 : "Decryption failed - BIO_write");
3305 0 : return NULL;
3306 : }
3307 896 : if (BIO_reset(conn->ssl_out) < 0) {
3308 0 : tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
3309 0 : return NULL;
3310 : }
3311 :
3312 : /* Read decrypted data for further processing */
3313 : /*
3314 : * Even though we try to disable TLS compression, it is possible that
3315 : * this cannot be done with all TLS libraries. Add extra buffer space
3316 : * to handle the possibility of the decrypted data being longer than
3317 : * input data.
3318 : */
3319 896 : buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
3320 896 : if (buf == NULL)
3321 0 : return NULL;
3322 896 : res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
3323 896 : if (res < 0) {
3324 0 : tls_show_errors(MSG_INFO, __func__,
3325 : "Decryption failed - SSL_read");
3326 0 : wpabuf_free(buf);
3327 0 : return NULL;
3328 : }
3329 896 : wpabuf_put(buf, res);
3330 :
3331 896 : if (conn->invalid_hb_used) {
3332 0 : wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response");
3333 0 : wpabuf_free(buf);
3334 0 : return NULL;
3335 : }
3336 :
3337 896 : return buf;
3338 : }
3339 :
3340 :
3341 1631 : int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
3342 : {
3343 : #if OPENSSL_VERSION_NUMBER >= 0x10001000L
3344 1631 : return conn ? SSL_cache_hit(conn->ssl) : 0;
3345 : #else
3346 : return conn ? conn->ssl->hit : 0;
3347 : #endif
3348 : }
3349 :
3350 :
3351 39 : int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
3352 : u8 *ciphers)
3353 : {
3354 : char buf[100], *pos, *end;
3355 : u8 *c;
3356 : int ret;
3357 :
3358 39 : if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
3359 0 : return -1;
3360 :
3361 39 : buf[0] = '\0';
3362 39 : pos = buf;
3363 39 : end = pos + sizeof(buf);
3364 :
3365 39 : c = ciphers;
3366 211 : while (*c != TLS_CIPHER_NONE) {
3367 : const char *suite;
3368 :
3369 133 : switch (*c) {
3370 : case TLS_CIPHER_RC4_SHA:
3371 34 : suite = "RC4-SHA";
3372 34 : break;
3373 : case TLS_CIPHER_AES128_SHA:
3374 34 : suite = "AES128-SHA";
3375 34 : break;
3376 : case TLS_CIPHER_RSA_DHE_AES128_SHA:
3377 34 : suite = "DHE-RSA-AES128-SHA";
3378 34 : break;
3379 : case TLS_CIPHER_ANON_DH_AES128_SHA:
3380 31 : suite = "ADH-AES128-SHA";
3381 31 : break;
3382 : default:
3383 0 : wpa_printf(MSG_DEBUG, "TLS: Unsupported "
3384 0 : "cipher selection: %d", *c);
3385 0 : return -1;
3386 : }
3387 133 : ret = os_snprintf(pos, end - pos, ":%s", suite);
3388 133 : if (os_snprintf_error(end - pos, ret))
3389 0 : break;
3390 133 : pos += ret;
3391 :
3392 133 : c++;
3393 : }
3394 :
3395 39 : wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
3396 :
3397 : #if OPENSSL_VERSION_NUMBER >= 0x10100000L
3398 : #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3399 : if (os_strstr(buf, ":ADH-")) {
3400 : /*
3401 : * Need to drop to security level 0 to allow anonymous
3402 : * cipher suites for EAP-FAST.
3403 : */
3404 : SSL_set_security_level(conn->ssl, 0);
3405 : } else if (SSL_get_security_level(conn->ssl) == 0) {
3406 : /* Force at least security level 1 */
3407 : SSL_set_security_level(conn->ssl, 1);
3408 : }
3409 : #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3410 : #endif
3411 :
3412 39 : if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
3413 0 : tls_show_errors(MSG_INFO, __func__,
3414 : "Cipher suite configuration failed");
3415 0 : return -1;
3416 : }
3417 :
3418 39 : return 0;
3419 : }
3420 :
3421 :
3422 198 : int tls_get_version(void *ssl_ctx, struct tls_connection *conn,
3423 : char *buf, size_t buflen)
3424 : {
3425 : const char *name;
3426 198 : if (conn == NULL || conn->ssl == NULL)
3427 0 : return -1;
3428 :
3429 198 : name = SSL_get_version(conn->ssl);
3430 198 : if (name == NULL)
3431 0 : return -1;
3432 :
3433 198 : os_strlcpy(buf, name, buflen);
3434 198 : return 0;
3435 : }
3436 :
3437 :
3438 229 : int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
3439 : char *buf, size_t buflen)
3440 : {
3441 : const char *name;
3442 229 : if (conn == NULL || conn->ssl == NULL)
3443 0 : return -1;
3444 :
3445 229 : name = SSL_get_cipher(conn->ssl);
3446 229 : if (name == NULL)
3447 0 : return -1;
3448 :
3449 229 : os_strlcpy(buf, name, buflen);
3450 229 : return 0;
3451 : }
3452 :
3453 :
3454 26 : int tls_connection_enable_workaround(void *ssl_ctx,
3455 : struct tls_connection *conn)
3456 : {
3457 26 : SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
3458 :
3459 26 : return 0;
3460 : }
3461 :
3462 :
3463 : #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3464 : /* ClientHello TLS extensions require a patch to openssl, so this function is
3465 : * commented out unless explicitly needed for EAP-FAST in order to be able to
3466 : * build this file with unmodified openssl. */
3467 24 : int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
3468 : int ext_type, const u8 *data,
3469 : size_t data_len)
3470 : {
3471 24 : if (conn == NULL || conn->ssl == NULL || ext_type != 35)
3472 0 : return -1;
3473 :
3474 24 : if (SSL_set_session_ticket_ext(conn->ssl, (void *) data,
3475 : data_len) != 1)
3476 0 : return -1;
3477 :
3478 24 : return 0;
3479 : }
3480 : #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3481 :
3482 :
3483 1649 : int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
3484 : {
3485 1649 : if (conn == NULL)
3486 0 : return -1;
3487 1649 : return conn->failed;
3488 : }
3489 :
3490 :
3491 0 : int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
3492 : {
3493 0 : if (conn == NULL)
3494 0 : return -1;
3495 0 : return conn->read_alerts;
3496 : }
3497 :
3498 :
3499 1335 : int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
3500 : {
3501 1335 : if (conn == NULL)
3502 0 : return -1;
3503 1335 : return conn->write_alerts;
3504 : }
3505 :
3506 :
3507 : #ifdef HAVE_OCSP
3508 :
3509 5 : static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp)
3510 : {
3511 : #ifndef CONFIG_NO_STDOUT_DEBUG
3512 : BIO *out;
3513 : size_t rlen;
3514 : char *txt;
3515 : int res;
3516 :
3517 5 : if (wpa_debug_level > MSG_DEBUG)
3518 0 : return;
3519 :
3520 5 : out = BIO_new(BIO_s_mem());
3521 5 : if (!out)
3522 0 : return;
3523 :
3524 5 : OCSP_RESPONSE_print(out, rsp, 0);
3525 5 : rlen = BIO_ctrl_pending(out);
3526 5 : txt = os_malloc(rlen + 1);
3527 5 : if (!txt) {
3528 0 : BIO_free(out);
3529 0 : return;
3530 : }
3531 :
3532 5 : res = BIO_read(out, txt, rlen);
3533 5 : if (res > 0) {
3534 5 : txt[res] = '\0';
3535 5 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt);
3536 : }
3537 5 : os_free(txt);
3538 5 : BIO_free(out);
3539 : #endif /* CONFIG_NO_STDOUT_DEBUG */
3540 : }
3541 :
3542 :
3543 5 : static void debug_print_cert(X509 *cert, const char *title)
3544 : {
3545 : #ifndef CONFIG_NO_STDOUT_DEBUG
3546 : BIO *out;
3547 : size_t rlen;
3548 : char *txt;
3549 : int res;
3550 :
3551 5 : if (wpa_debug_level > MSG_DEBUG)
3552 0 : return;
3553 :
3554 5 : out = BIO_new(BIO_s_mem());
3555 5 : if (!out)
3556 0 : return;
3557 :
3558 5 : X509_print(out, cert);
3559 5 : rlen = BIO_ctrl_pending(out);
3560 5 : txt = os_malloc(rlen + 1);
3561 5 : if (!txt) {
3562 0 : BIO_free(out);
3563 0 : return;
3564 : }
3565 :
3566 5 : res = BIO_read(out, txt, rlen);
3567 5 : if (res > 0) {
3568 5 : txt[res] = '\0';
3569 5 : wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt);
3570 : }
3571 5 : os_free(txt);
3572 :
3573 5 : BIO_free(out);
3574 : #endif /* CONFIG_NO_STDOUT_DEBUG */
3575 : }
3576 :
3577 :
3578 7 : static int ocsp_resp_cb(SSL *s, void *arg)
3579 : {
3580 7 : struct tls_connection *conn = arg;
3581 : const unsigned char *p;
3582 : int len, status, reason;
3583 : OCSP_RESPONSE *rsp;
3584 : OCSP_BASICRESP *basic;
3585 : OCSP_CERTID *id;
3586 : ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update;
3587 : X509_STORE *store;
3588 7 : STACK_OF(X509) *certs = NULL;
3589 :
3590 7 : len = SSL_get_tlsext_status_ocsp_resp(s, &p);
3591 7 : if (!p) {
3592 1 : wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received");
3593 1 : return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
3594 : }
3595 :
3596 6 : wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len);
3597 :
3598 6 : rsp = d2i_OCSP_RESPONSE(NULL, &p, len);
3599 6 : if (!rsp) {
3600 1 : wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response");
3601 1 : return 0;
3602 : }
3603 :
3604 5 : ocsp_debug_print_resp(rsp);
3605 :
3606 5 : status = OCSP_response_status(rsp);
3607 5 : if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) {
3608 0 : wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)",
3609 : status, OCSP_response_status_str(status));
3610 0 : return 0;
3611 : }
3612 :
3613 5 : basic = OCSP_response_get1_basic(rsp);
3614 5 : if (!basic) {
3615 0 : wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse");
3616 0 : return 0;
3617 : }
3618 :
3619 5 : store = SSL_CTX_get_cert_store(conn->ssl_ctx);
3620 5 : if (conn->peer_issuer) {
3621 5 : debug_print_cert(conn->peer_issuer, "Add OCSP issuer");
3622 :
3623 5 : if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) {
3624 5 : tls_show_errors(MSG_INFO, __func__,
3625 : "OpenSSL: Could not add issuer to certificate store");
3626 : }
3627 5 : certs = sk_X509_new_null();
3628 5 : if (certs) {
3629 : X509 *cert;
3630 5 : cert = X509_dup(conn->peer_issuer);
3631 5 : if (cert && !sk_X509_push(certs, cert)) {
3632 0 : tls_show_errors(
3633 : MSG_INFO, __func__,
3634 : "OpenSSL: Could not add issuer to OCSP responder trust store");
3635 0 : X509_free(cert);
3636 0 : sk_X509_free(certs);
3637 0 : certs = NULL;
3638 : }
3639 5 : if (certs && conn->peer_issuer_issuer) {
3640 0 : cert = X509_dup(conn->peer_issuer_issuer);
3641 0 : if (cert && !sk_X509_push(certs, cert)) {
3642 0 : tls_show_errors(
3643 : MSG_INFO, __func__,
3644 : "OpenSSL: Could not add issuer's issuer to OCSP responder trust store");
3645 0 : X509_free(cert);
3646 : }
3647 : }
3648 : }
3649 : }
3650 :
3651 5 : status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER);
3652 5 : sk_X509_pop_free(certs, X509_free);
3653 5 : if (status <= 0) {
3654 0 : tls_show_errors(MSG_INFO, __func__,
3655 : "OpenSSL: OCSP response failed verification");
3656 0 : OCSP_BASICRESP_free(basic);
3657 0 : OCSP_RESPONSE_free(rsp);
3658 0 : return 0;
3659 : }
3660 :
3661 5 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded");
3662 :
3663 5 : if (!conn->peer_cert) {
3664 0 : wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check");
3665 0 : OCSP_BASICRESP_free(basic);
3666 0 : OCSP_RESPONSE_free(rsp);
3667 0 : return 0;
3668 : }
3669 :
3670 5 : if (!conn->peer_issuer) {
3671 0 : wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check");
3672 0 : OCSP_BASICRESP_free(basic);
3673 0 : OCSP_RESPONSE_free(rsp);
3674 0 : return 0;
3675 : }
3676 :
3677 5 : id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer);
3678 5 : if (!id) {
3679 0 : wpa_printf(MSG_DEBUG, "OpenSSL: Could not create OCSP certificate identifier");
3680 0 : OCSP_BASICRESP_free(basic);
3681 0 : OCSP_RESPONSE_free(rsp);
3682 0 : return 0;
3683 : }
3684 :
3685 5 : if (!OCSP_resp_find_status(basic, id, &status, &reason, &produced_at,
3686 : &this_update, &next_update)) {
3687 1 : wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s",
3688 1 : (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" :
3689 : " (OCSP not required)");
3690 1 : OCSP_BASICRESP_free(basic);
3691 1 : OCSP_RESPONSE_free(rsp);
3692 1 : return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1;
3693 : }
3694 :
3695 4 : if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) {
3696 0 : tls_show_errors(MSG_INFO, __func__,
3697 : "OpenSSL: OCSP status times invalid");
3698 0 : OCSP_BASICRESP_free(basic);
3699 0 : OCSP_RESPONSE_free(rsp);
3700 0 : return 0;
3701 : }
3702 :
3703 4 : OCSP_BASICRESP_free(basic);
3704 4 : OCSP_RESPONSE_free(rsp);
3705 :
3706 4 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s",
3707 : OCSP_cert_status_str(status));
3708 :
3709 4 : if (status == V_OCSP_CERTSTATUS_GOOD)
3710 1 : return 1;
3711 3 : if (status == V_OCSP_CERTSTATUS_REVOKED)
3712 1 : return 0;
3713 2 : if (conn->flags & TLS_CONN_REQUIRE_OCSP) {
3714 1 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required");
3715 1 : return 0;
3716 : }
3717 1 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue");
3718 1 : return 1;
3719 : }
3720 :
3721 :
3722 7 : static int ocsp_status_cb(SSL *s, void *arg)
3723 : {
3724 : char *tmp;
3725 : char *resp;
3726 : size_t len;
3727 :
3728 7 : if (tls_global->ocsp_stapling_response == NULL) {
3729 0 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured");
3730 0 : return SSL_TLSEXT_ERR_OK;
3731 : }
3732 :
3733 7 : resp = os_readfile(tls_global->ocsp_stapling_response, &len);
3734 7 : if (resp == NULL) {
3735 1 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file");
3736 : /* TODO: Build OCSPResponse with responseStatus = internalError
3737 : */
3738 1 : return SSL_TLSEXT_ERR_OK;
3739 : }
3740 6 : wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response");
3741 6 : tmp = OPENSSL_malloc(len);
3742 6 : if (tmp == NULL) {
3743 0 : os_free(resp);
3744 0 : return SSL_TLSEXT_ERR_ALERT_FATAL;
3745 : }
3746 :
3747 6 : os_memcpy(tmp, resp, len);
3748 6 : os_free(resp);
3749 6 : SSL_set_tlsext_status_ocsp_resp(s, tmp, len);
3750 :
3751 6 : return SSL_TLSEXT_ERR_OK;
3752 : }
3753 :
3754 : #endif /* HAVE_OCSP */
3755 :
3756 :
3757 298 : int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
3758 : const struct tls_connection_params *params)
3759 : {
3760 298 : struct tls_data *data = tls_ctx;
3761 : int ret;
3762 : unsigned long err;
3763 298 : int can_pkcs11 = 0;
3764 298 : const char *key_id = params->key_id;
3765 298 : const char *cert_id = params->cert_id;
3766 298 : const char *ca_cert_id = params->ca_cert_id;
3767 298 : const char *engine_id = params->engine ? params->engine_id : NULL;
3768 :
3769 298 : if (conn == NULL)
3770 0 : return -1;
3771 :
3772 : /*
3773 : * If the engine isn't explicitly configured, and any of the
3774 : * cert/key fields are actually PKCS#11 URIs, then automatically
3775 : * use the PKCS#11 ENGINE.
3776 : */
3777 298 : if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0)
3778 298 : can_pkcs11 = 1;
3779 :
3780 341 : if (!key_id && params->private_key && can_pkcs11 &&
3781 43 : os_strncmp(params->private_key, "pkcs11:", 7) == 0) {
3782 0 : can_pkcs11 = 2;
3783 0 : key_id = params->private_key;
3784 : }
3785 :
3786 323 : if (!cert_id && params->client_cert && can_pkcs11 &&
3787 25 : os_strncmp(params->client_cert, "pkcs11:", 7) == 0) {
3788 0 : can_pkcs11 = 2;
3789 0 : cert_id = params->client_cert;
3790 : }
3791 :
3792 576 : if (!ca_cert_id && params->ca_cert && can_pkcs11 &&
3793 278 : os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) {
3794 0 : can_pkcs11 = 2;
3795 0 : ca_cert_id = params->ca_cert;
3796 : }
3797 :
3798 : /* If we need to automatically enable the PKCS#11 ENGINE, do so. */
3799 298 : if (can_pkcs11 == 2 && !engine_id)
3800 0 : engine_id = "pkcs11";
3801 :
3802 : #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3803 : #if OPENSSL_VERSION_NUMBER < 0x10100000L
3804 298 : if (params->flags & TLS_CONN_EAP_FAST) {
3805 26 : wpa_printf(MSG_DEBUG,
3806 : "OpenSSL: Use TLSv1_method() for EAP-FAST");
3807 26 : if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) {
3808 0 : tls_show_errors(MSG_INFO, __func__,
3809 : "Failed to set TLSv1_method() for EAP-FAST");
3810 0 : return -1;
3811 : }
3812 : }
3813 : #endif
3814 : #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
3815 :
3816 597 : while ((err = ERR_get_error())) {
3817 1 : wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
3818 : __func__, ERR_error_string(err, NULL));
3819 : }
3820 :
3821 298 : if (engine_id) {
3822 0 : wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
3823 0 : ret = tls_engine_init(conn, engine_id, params->pin,
3824 : key_id, cert_id, ca_cert_id);
3825 0 : if (ret)
3826 0 : return ret;
3827 : }
3828 298 : if (tls_connection_set_subject_match(conn,
3829 : params->subject_match,
3830 : params->altsubject_match,
3831 : params->suffix_match,
3832 : params->domain_match))
3833 4 : return -1;
3834 :
3835 294 : if (engine_id && ca_cert_id) {
3836 0 : if (tls_connection_engine_ca_cert(data, conn, ca_cert_id))
3837 0 : return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
3838 294 : } else if (tls_connection_ca_cert(data, conn, params->ca_cert,
3839 : params->ca_cert_blob,
3840 : params->ca_cert_blob_len,
3841 : params->ca_path))
3842 3 : return -1;
3843 :
3844 291 : if (engine_id && cert_id) {
3845 0 : if (tls_connection_engine_client_cert(conn, cert_id))
3846 0 : return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
3847 291 : } else if (tls_connection_client_cert(conn, params->client_cert,
3848 : params->client_cert_blob,
3849 : params->client_cert_blob_len))
3850 0 : return -1;
3851 :
3852 291 : if (engine_id && key_id) {
3853 0 : wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
3854 0 : if (tls_connection_engine_private_key(conn))
3855 0 : return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
3856 291 : } else if (tls_connection_private_key(data, conn,
3857 : params->private_key,
3858 : params->private_key_passwd,
3859 : params->private_key_blob,
3860 : params->private_key_blob_len)) {
3861 1 : wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
3862 : params->private_key);
3863 1 : return -1;
3864 : }
3865 :
3866 290 : if (tls_connection_dh(conn, params->dh_file)) {
3867 0 : wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
3868 : params->dh_file);
3869 0 : return -1;
3870 : }
3871 :
3872 299 : if (params->openssl_ciphers &&
3873 9 : SSL_set_cipher_list(conn->ssl, params->openssl_ciphers) != 1) {
3874 1 : wpa_printf(MSG_INFO,
3875 : "OpenSSL: Failed to set cipher string '%s'",
3876 : params->openssl_ciphers);
3877 1 : return -1;
3878 : }
3879 :
3880 289 : tls_set_conn_flags(conn->ssl, params->flags);
3881 :
3882 : #ifdef HAVE_OCSP
3883 289 : if (params->flags & TLS_CONN_REQUEST_OCSP) {
3884 7 : SSL_CTX *ssl_ctx = data->ssl;
3885 7 : SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp);
3886 7 : SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb);
3887 7 : SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn);
3888 : }
3889 : #else /* HAVE_OCSP */
3890 : if (params->flags & TLS_CONN_REQUIRE_OCSP) {
3891 : wpa_printf(MSG_INFO,
3892 : "OpenSSL: No OCSP support included - reject configuration");
3893 : return -1;
3894 : }
3895 : if (params->flags & TLS_CONN_REQUEST_OCSP) {
3896 : wpa_printf(MSG_DEBUG,
3897 : "OpenSSL: No OCSP support included - allow optional OCSP case to continue");
3898 : }
3899 : #endif /* HAVE_OCSP */
3900 :
3901 289 : conn->flags = params->flags;
3902 :
3903 289 : tls_get_errors(data);
3904 :
3905 289 : return 0;
3906 : }
3907 :
3908 :
3909 83 : int tls_global_set_params(void *tls_ctx,
3910 : const struct tls_connection_params *params)
3911 : {
3912 83 : struct tls_data *data = tls_ctx;
3913 83 : SSL_CTX *ssl_ctx = data->ssl;
3914 : unsigned long err;
3915 :
3916 166 : while ((err = ERR_get_error())) {
3917 0 : wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
3918 : __func__, ERR_error_string(err, NULL));
3919 : }
3920 :
3921 166 : if (tls_global_ca_cert(data, params->ca_cert) ||
3922 166 : tls_global_client_cert(data, params->client_cert) ||
3923 83 : tls_global_private_key(data, params->private_key,
3924 83 : params->private_key_passwd) ||
3925 83 : tls_global_dh(data, params->dh_file)) {
3926 2 : wpa_printf(MSG_INFO, "TLS: Failed to set global parameters");
3927 2 : return -1;
3928 : }
3929 :
3930 87 : if (params->openssl_ciphers &&
3931 6 : SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) {
3932 1 : wpa_printf(MSG_INFO,
3933 : "OpenSSL: Failed to set cipher string '%s'",
3934 : params->openssl_ciphers);
3935 1 : return -1;
3936 : }
3937 :
3938 : #ifdef SSL_OP_NO_TICKET
3939 80 : if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET)
3940 0 : SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET);
3941 : #ifdef SSL_CTX_clear_options
3942 : else
3943 80 : SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET);
3944 : #endif /* SSL_clear_options */
3945 : #endif /* SSL_OP_NO_TICKET */
3946 :
3947 : #ifdef HAVE_OCSP
3948 80 : SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb);
3949 80 : SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx);
3950 80 : os_free(tls_global->ocsp_stapling_response);
3951 80 : if (params->ocsp_stapling_response)
3952 36 : tls_global->ocsp_stapling_response =
3953 18 : os_strdup(params->ocsp_stapling_response);
3954 : else
3955 62 : tls_global->ocsp_stapling_response = NULL;
3956 : #endif /* HAVE_OCSP */
3957 :
3958 80 : return 0;
3959 : }
3960 :
3961 :
3962 : #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
3963 : /* Pre-shared secred requires a patch to openssl, so this function is
3964 : * commented out unless explicitly needed for EAP-FAST in order to be able to
3965 : * build this file with unmodified openssl. */
3966 :
3967 : #ifdef OPENSSL_IS_BORINGSSL
3968 : static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
3969 : STACK_OF(SSL_CIPHER) *peer_ciphers,
3970 : const SSL_CIPHER **cipher, void *arg)
3971 : #else /* OPENSSL_IS_BORINGSSL */
3972 46 : static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
3973 : STACK_OF(SSL_CIPHER) *peer_ciphers,
3974 : SSL_CIPHER **cipher, void *arg)
3975 : #endif /* OPENSSL_IS_BORINGSSL */
3976 : {
3977 46 : struct tls_connection *conn = arg;
3978 : int ret;
3979 :
3980 : #if OPENSSL_VERSION_NUMBER < 0x10100000L
3981 46 : if (conn == NULL || conn->session_ticket_cb == NULL)
3982 0 : return 0;
3983 :
3984 138 : ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
3985 46 : conn->session_ticket,
3986 : conn->session_ticket_len,
3987 46 : s->s3->client_random,
3988 46 : s->s3->server_random, secret);
3989 : #else
3990 : unsigned char client_random[SSL3_RANDOM_SIZE];
3991 : unsigned char server_random[SSL3_RANDOM_SIZE];
3992 :
3993 : if (conn == NULL || conn->session_ticket_cb == NULL)
3994 : return 0;
3995 :
3996 : SSL_get_client_random(s, client_random, sizeof(client_random));
3997 : SSL_get_server_random(s, server_random, sizeof(server_random));
3998 :
3999 : ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
4000 : conn->session_ticket,
4001 : conn->session_ticket_len,
4002 : client_random,
4003 : server_random, secret);
4004 : #endif
4005 :
4006 46 : os_free(conn->session_ticket);
4007 46 : conn->session_ticket = NULL;
4008 :
4009 46 : if (ret <= 0)
4010 26 : return 0;
4011 :
4012 20 : *secret_len = SSL_MAX_MASTER_KEY_LENGTH;
4013 20 : return 1;
4014 : }
4015 :
4016 :
4017 11 : static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data,
4018 : int len, void *arg)
4019 : {
4020 11 : struct tls_connection *conn = arg;
4021 :
4022 11 : if (conn == NULL || conn->session_ticket_cb == NULL)
4023 0 : return 0;
4024 :
4025 11 : wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len);
4026 :
4027 11 : os_free(conn->session_ticket);
4028 11 : conn->session_ticket = NULL;
4029 :
4030 11 : wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
4031 : "extension", data, len);
4032 :
4033 11 : conn->session_ticket = os_malloc(len);
4034 11 : if (conn->session_ticket == NULL)
4035 1 : return 0;
4036 :
4037 10 : os_memcpy(conn->session_ticket, data, len);
4038 10 : conn->session_ticket_len = len;
4039 :
4040 10 : return 1;
4041 : }
4042 : #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4043 :
4044 :
4045 52 : int tls_connection_set_session_ticket_cb(void *tls_ctx,
4046 : struct tls_connection *conn,
4047 : tls_session_ticket_cb cb,
4048 : void *ctx)
4049 : {
4050 : #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
4051 52 : conn->session_ticket_cb = cb;
4052 52 : conn->session_ticket_cb_ctx = ctx;
4053 :
4054 52 : if (cb) {
4055 52 : if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
4056 : conn) != 1)
4057 0 : return -1;
4058 52 : SSL_set_session_ticket_ext_cb(conn->ssl,
4059 : tls_session_ticket_ext_cb, conn);
4060 : } else {
4061 0 : if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
4062 0 : return -1;
4063 0 : SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL);
4064 : }
4065 :
4066 52 : return 0;
4067 : #else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4068 : return -1;
4069 : #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
4070 : }
4071 :
4072 :
4073 45 : int tls_get_library_version(char *buf, size_t buf_len)
4074 : {
4075 45 : return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s",
4076 : OPENSSL_VERSION_TEXT,
4077 : SSLeay_version(SSLEAY_VERSION));
4078 : }
4079 :
4080 :
4081 10 : void tls_connection_set_success_data(struct tls_connection *conn,
4082 : struct wpabuf *data)
4083 : {
4084 : SSL_SESSION *sess;
4085 : struct wpabuf *old;
4086 :
4087 10 : if (tls_ex_idx_session < 0)
4088 0 : goto fail;
4089 10 : sess = SSL_get_session(conn->ssl);
4090 10 : if (!sess)
4091 0 : goto fail;
4092 10 : old = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
4093 10 : if (old) {
4094 0 : wpa_printf(MSG_DEBUG, "OpenSSL: Replacing old success data %p",
4095 : old);
4096 0 : wpabuf_free(old);
4097 : }
4098 10 : if (SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1)
4099 0 : goto fail;
4100 :
4101 10 : wpa_printf(MSG_DEBUG, "OpenSSL: Stored success data %p", data);
4102 10 : conn->success_data = 1;
4103 20 : return;
4104 :
4105 : fail:
4106 0 : wpa_printf(MSG_INFO, "OpenSSL: Failed to store success data");
4107 0 : wpabuf_free(data);
4108 : }
4109 :
4110 :
4111 10 : void tls_connection_set_success_data_resumed(struct tls_connection *conn)
4112 : {
4113 10 : wpa_printf(MSG_DEBUG,
4114 : "OpenSSL: Success data accepted for resumed session");
4115 10 : conn->success_data = 1;
4116 10 : }
4117 :
4118 :
4119 : const struct wpabuf *
4120 10 : tls_connection_get_success_data(struct tls_connection *conn)
4121 : {
4122 : SSL_SESSION *sess;
4123 :
4124 20 : if (tls_ex_idx_session < 0 ||
4125 10 : !(sess = SSL_get_session(conn->ssl)))
4126 0 : return NULL;
4127 10 : return SSL_SESSION_get_ex_data(sess, tls_ex_idx_session);
4128 : }
4129 :
4130 :
4131 54 : void tls_connection_remove_session(struct tls_connection *conn)
4132 : {
4133 : SSL_SESSION *sess;
4134 :
4135 54 : sess = SSL_get_session(conn->ssl);
4136 54 : if (!sess)
4137 54 : return;
4138 :
4139 54 : if (SSL_CTX_remove_session(conn->ssl_ctx, sess) != 1)
4140 54 : wpa_printf(MSG_DEBUG,
4141 : "OpenSSL: Session was not cached");
4142 : else
4143 0 : wpa_printf(MSG_DEBUG,
4144 : "OpenSSL: Removed cached session to disable session resumption");
4145 : }
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