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Commit | Line | Data |
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6fc6879b | 1 | /* |
81c85c06 | 2 | * SSL/TLS interface functions for OpenSSL |
16bc3b89 | 3 | * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi> |
6fc6879b | 4 | * |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
6fc6879b JM |
7 | */ |
8 | ||
9 | #include "includes.h" | |
10 | ||
11 | #ifndef CONFIG_SMARTCARD | |
12 | #ifndef OPENSSL_NO_ENGINE | |
1176ab6d | 13 | #ifndef ANDROID |
6fc6879b JM |
14 | #define OPENSSL_NO_ENGINE |
15 | #endif | |
16 | #endif | |
1176ab6d | 17 | #endif |
6fc6879b JM |
18 | |
19 | #include <openssl/ssl.h> | |
20 | #include <openssl/err.h> | |
e4471338 | 21 | #include <openssl/opensslv.h> |
6fc6879b JM |
22 | #include <openssl/pkcs12.h> |
23 | #include <openssl/x509v3.h> | |
24 | #ifndef OPENSSL_NO_ENGINE | |
25 | #include <openssl/engine.h> | |
26 | #endif /* OPENSSL_NO_ENGINE */ | |
690e543e JM |
27 | #ifndef OPENSSL_NO_DSA |
28 | #include <openssl/dsa.h> | |
29 | #endif | |
30 | #ifndef OPENSSL_NO_DH | |
31 | #include <openssl/dh.h> | |
32 | #endif | |
6fc6879b JM |
33 | |
34 | #include "common.h" | |
00468b46 | 35 | #include "crypto.h" |
fa0e7151 | 36 | #include "sha1.h" |
16bc3b89 | 37 | #include "sha256.h" |
6fc6879b | 38 | #include "tls.h" |
213e158c | 39 | #include "tls_openssl.h" |
6fc6879b | 40 | |
1cece2fa DB |
41 | #if !defined(CONFIG_FIPS) && \ |
42 | (defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || \ | |
43 | defined(EAP_SERVER_FAST)) | |
44 | #define OPENSSL_NEED_EAP_FAST_PRF | |
45 | #endif | |
46 | ||
0ed57c5e JM |
47 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || \ |
48 | defined(EAP_SERVER_FAST) || defined(EAP_TEAP) || \ | |
49 | defined(EAP_SERVER_TEAP) | |
50 | #define EAP_FAST_OR_TEAP | |
51 | #endif | |
52 | ||
53 | ||
a8572960 AL |
54 | #if defined(OPENSSL_IS_BORINGSSL) |
55 | /* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */ | |
56 | typedef size_t stack_index_t; | |
57 | #else | |
58 | typedef int stack_index_t; | |
0cf03892 JM |
59 | #endif |
60 | ||
080585c0 JM |
61 | #ifdef SSL_set_tlsext_status_type |
62 | #ifndef OPENSSL_NO_TLSEXT | |
63 | #define HAVE_OCSP | |
64 | #include <openssl/ocsp.h> | |
65 | #endif /* OPENSSL_NO_TLSEXT */ | |
66 | #endif /* SSL_set_tlsext_status_type */ | |
67 | ||
e4471338 | 68 | #if (OPENSSL_VERSION_NUMBER < 0x10100000L || \ |
ba3658cf BS |
69 | (defined(LIBRESSL_VERSION_NUMBER) && \ |
70 | LIBRESSL_VERSION_NUMBER < 0x20700000L)) && \ | |
e4471338 | 71 | !defined(BORINGSSL_API_VERSION) |
dea20519 JM |
72 | /* |
73 | * SSL_get_client_random() and SSL_get_server_random() were added in OpenSSL | |
e4471338 DB |
74 | * 1.1.0 and newer BoringSSL revisions. Provide compatibility wrappers for |
75 | * older versions. | |
dea20519 JM |
76 | */ |
77 | ||
78 | static size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, | |
79 | size_t outlen) | |
80 | { | |
81 | if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE) | |
82 | return 0; | |
83 | os_memcpy(out, ssl->s3->client_random, SSL3_RANDOM_SIZE); | |
84 | return SSL3_RANDOM_SIZE; | |
85 | } | |
86 | ||
87 | ||
88 | static size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, | |
89 | size_t outlen) | |
90 | { | |
91 | if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE) | |
92 | return 0; | |
93 | os_memcpy(out, ssl->s3->server_random, SSL3_RANDOM_SIZE); | |
94 | return SSL3_RANDOM_SIZE; | |
95 | } | |
96 | ||
1ebb24bb | 97 | |
1cece2fa | 98 | #ifdef OPENSSL_NEED_EAP_FAST_PRF |
1ebb24bb JM |
99 | static size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, |
100 | unsigned char *out, size_t outlen) | |
101 | { | |
102 | if (!session || session->master_key_length < 0 || | |
103 | (size_t) session->master_key_length > outlen) | |
104 | return 0; | |
105 | if ((size_t) session->master_key_length < outlen) | |
106 | outlen = session->master_key_length; | |
107 | os_memcpy(out, session->master_key, outlen); | |
108 | return outlen; | |
109 | } | |
1cece2fa | 110 | #endif /* OPENSSL_NEED_EAP_FAST_PRF */ |
1ebb24bb | 111 | |
dea20519 JM |
112 | #endif |
113 | ||
837e3658 AU |
114 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || \ |
115 | (defined(LIBRESSL_VERSION_NUMBER) && \ | |
116 | LIBRESSL_VERSION_NUMBER < 0x20700000L) | |
4eb8cfe0 JM |
117 | #ifdef CONFIG_SUITEB |
118 | static int RSA_bits(const RSA *r) | |
119 | { | |
120 | return BN_num_bits(r->n); | |
121 | } | |
122 | #endif /* CONFIG_SUITEB */ | |
2ff952a5 JM |
123 | |
124 | ||
125 | static const unsigned char * ASN1_STRING_get0_data(const ASN1_STRING *x) | |
126 | { | |
127 | return ASN1_STRING_data((ASN1_STRING *) x); | |
128 | } | |
4eb8cfe0 JM |
129 | #endif |
130 | ||
1d415f1f KR |
131 | #ifdef ANDROID |
132 | #include <openssl/pem.h> | |
133 | #include <keystore/keystore_get.h> | |
134 | ||
135 | static BIO * BIO_from_keystore(const char *key) | |
136 | { | |
137 | BIO *bio = NULL; | |
138 | uint8_t *value = NULL; | |
139 | int length = keystore_get(key, strlen(key), &value); | |
140 | if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL) | |
141 | BIO_write(bio, value, length); | |
142 | free(value); | |
143 | return bio; | |
144 | } | |
a8ef133f RX |
145 | |
146 | ||
147 | static int tls_add_ca_from_keystore(X509_STORE *ctx, const char *key_alias) | |
148 | { | |
149 | BIO *bio = BIO_from_keystore(key_alias); | |
150 | STACK_OF(X509_INFO) *stack = NULL; | |
151 | stack_index_t i; | |
152 | ||
153 | if (bio) { | |
154 | stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL); | |
155 | BIO_free(bio); | |
156 | } | |
157 | ||
158 | if (!stack) { | |
159 | wpa_printf(MSG_WARNING, "TLS: Failed to parse certificate: %s", | |
160 | key_alias); | |
161 | return -1; | |
162 | } | |
163 | ||
164 | for (i = 0; i < sk_X509_INFO_num(stack); ++i) { | |
165 | X509_INFO *info = sk_X509_INFO_value(stack, i); | |
166 | ||
167 | if (info->x509) | |
168 | X509_STORE_add_cert(ctx, info->x509); | |
169 | if (info->crl) | |
170 | X509_STORE_add_crl(ctx, info->crl); | |
171 | } | |
172 | ||
173 | sk_X509_INFO_pop_free(stack, X509_INFO_free); | |
174 | ||
175 | return 0; | |
176 | } | |
177 | ||
178 | ||
179 | static int tls_add_ca_from_keystore_encoded(X509_STORE *ctx, | |
180 | const char *encoded_key_alias) | |
181 | { | |
182 | int rc = -1; | |
183 | int len = os_strlen(encoded_key_alias); | |
184 | unsigned char *decoded_alias; | |
185 | ||
186 | if (len & 1) { | |
187 | wpa_printf(MSG_WARNING, "Invalid hex-encoded alias: %s", | |
188 | encoded_key_alias); | |
189 | return rc; | |
190 | } | |
191 | ||
192 | decoded_alias = os_malloc(len / 2 + 1); | |
193 | if (decoded_alias) { | |
194 | if (!hexstr2bin(encoded_key_alias, decoded_alias, len / 2)) { | |
195 | decoded_alias[len / 2] = '\0'; | |
196 | rc = tls_add_ca_from_keystore( | |
197 | ctx, (const char *) decoded_alias); | |
198 | } | |
199 | os_free(decoded_alias); | |
200 | } | |
201 | ||
202 | return rc; | |
203 | } | |
204 | ||
1d415f1f KR |
205 | #endif /* ANDROID */ |
206 | ||
6fc6879b | 207 | static int tls_openssl_ref_count = 0; |
acf36f31 | 208 | static int tls_ex_idx_session = -1; |
6fc6879b | 209 | |
7c0e1e27 | 210 | struct tls_context { |
00468b46 JM |
211 | void (*event_cb)(void *ctx, enum tls_event ev, |
212 | union tls_event_data *data); | |
213 | void *cb_ctx; | |
1b414f59 | 214 | int cert_in_cb; |
080585c0 | 215 | char *ocsp_stapling_response; |
00468b46 JM |
216 | }; |
217 | ||
7c0e1e27 | 218 | static struct tls_context *tls_global = NULL; |
00468b46 JM |
219 | |
220 | ||
bd9b8b2b JM |
221 | struct tls_data { |
222 | SSL_CTX *ssl; | |
acf36f31 | 223 | unsigned int tls_session_lifetime; |
159a7fbd | 224 | int check_crl; |
dd5d325b | 225 | int check_crl_strict; |
159a7fbd JB |
226 | char *ca_cert; |
227 | unsigned int crl_reload_interval; | |
228 | struct os_reltime crl_last_reload; | |
841205a1 | 229 | char *check_cert_subject; |
bd9b8b2b JM |
230 | }; |
231 | ||
6fc6879b | 232 | struct tls_connection { |
7c0e1e27 | 233 | struct tls_context *context; |
dd5d325b | 234 | struct tls_data *data; |
68ae4773 | 235 | SSL_CTX *ssl_ctx; |
6fc6879b JM |
236 | SSL *ssl; |
237 | BIO *ssl_in, *ssl_out; | |
aeeb0bca | 238 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
239 | ENGINE *engine; /* functional reference to the engine */ |
240 | EVP_PKEY *private_key; /* the private key if using engine */ | |
241 | #endif /* OPENSSL_NO_ENGINE */ | |
cebee30f | 242 | char *subject_match, *altsubject_match, *suffix_match, *domain_match; |
841205a1 | 243 | char *check_cert_subject; |
6fc6879b JM |
244 | int read_alerts, write_alerts, failed; |
245 | ||
246 | tls_session_ticket_cb session_ticket_cb; | |
247 | void *session_ticket_cb_ctx; | |
248 | ||
249 | /* SessionTicket received from OpenSSL hello_extension_cb (server) */ | |
250 | u8 *session_ticket; | |
251 | size_t session_ticket_len; | |
00468b46 | 252 | |
8d6399e4 JM |
253 | unsigned int ca_cert_verify:1; |
254 | unsigned int cert_probe:1; | |
255 | unsigned int server_cert_only:1; | |
bb52293e | 256 | unsigned int invalid_hb_used:1; |
acf36f31 | 257 | unsigned int success_data:1; |
4a576c47 | 258 | unsigned int client_hello_generated:1; |
53b34578 | 259 | unsigned int server:1; |
00468b46 JM |
260 | |
261 | u8 srv_cert_hash[32]; | |
235279e7 JM |
262 | |
263 | unsigned int flags; | |
080585c0 JM |
264 | |
265 | X509 *peer_cert; | |
266 | X509 *peer_issuer; | |
6bf61fb2 | 267 | X509 *peer_issuer_issuer; |
005c5dcf | 268 | |
005c5dcf JM |
269 | unsigned char client_random[SSL3_RANDOM_SIZE]; |
270 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
1c9663cf JM |
271 | |
272 | u16 cipher_suite; | |
273 | int server_dh_prime_len; | |
6fc6879b JM |
274 | }; |
275 | ||
276 | ||
7c0e1e27 PS |
277 | static struct tls_context * tls_context_new(const struct tls_config *conf) |
278 | { | |
279 | struct tls_context *context = os_zalloc(sizeof(*context)); | |
280 | if (context == NULL) | |
281 | return NULL; | |
282 | if (conf) { | |
283 | context->event_cb = conf->event_cb; | |
284 | context->cb_ctx = conf->cb_ctx; | |
285 | context->cert_in_cb = conf->cert_in_cb; | |
286 | } | |
287 | return context; | |
288 | } | |
289 | ||
290 | ||
6fc6879b JM |
291 | #ifdef CONFIG_NO_STDOUT_DEBUG |
292 | ||
293 | static void _tls_show_errors(void) | |
294 | { | |
295 | unsigned long err; | |
296 | ||
297 | while ((err = ERR_get_error())) { | |
298 | /* Just ignore the errors, since stdout is disabled */ | |
299 | } | |
300 | } | |
301 | #define tls_show_errors(l, f, t) _tls_show_errors() | |
302 | ||
303 | #else /* CONFIG_NO_STDOUT_DEBUG */ | |
304 | ||
305 | static void tls_show_errors(int level, const char *func, const char *txt) | |
306 | { | |
307 | unsigned long err; | |
308 | ||
309 | wpa_printf(level, "OpenSSL: %s - %s %s", | |
310 | func, txt, ERR_error_string(ERR_get_error(), NULL)); | |
311 | ||
312 | while ((err = ERR_get_error())) { | |
313 | wpa_printf(MSG_INFO, "OpenSSL: pending error: %s", | |
314 | ERR_error_string(err, NULL)); | |
315 | } | |
316 | } | |
317 | ||
318 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
319 | ||
320 | ||
159a7fbd JB |
321 | static X509_STORE * tls_crl_cert_reload(const char *ca_cert, int check_crl) |
322 | { | |
323 | int flags; | |
324 | X509_STORE *store; | |
325 | ||
326 | store = X509_STORE_new(); | |
327 | if (!store) { | |
328 | wpa_printf(MSG_DEBUG, | |
329 | "OpenSSL: %s - failed to allocate new certificate store", | |
330 | __func__); | |
331 | return NULL; | |
332 | } | |
333 | ||
334 | if (ca_cert && X509_STORE_load_locations(store, ca_cert, NULL) != 1) { | |
335 | tls_show_errors(MSG_WARNING, __func__, | |
336 | "Failed to load root certificates"); | |
337 | X509_STORE_free(store); | |
338 | return NULL; | |
339 | } | |
340 | ||
91205c8e | 341 | flags = check_crl ? X509_V_FLAG_CRL_CHECK : 0; |
159a7fbd JB |
342 | if (check_crl == 2) |
343 | flags |= X509_V_FLAG_CRL_CHECK_ALL; | |
344 | ||
345 | X509_STORE_set_flags(store, flags); | |
346 | ||
347 | return store; | |
348 | } | |
349 | ||
350 | ||
6fc6879b JM |
351 | #ifdef CONFIG_NATIVE_WINDOWS |
352 | ||
353 | /* Windows CryptoAPI and access to certificate stores */ | |
354 | #include <wincrypt.h> | |
355 | ||
356 | #ifdef __MINGW32_VERSION | |
357 | /* | |
358 | * MinGW does not yet include all the needed definitions for CryptoAPI, so | |
359 | * define here whatever extra is needed. | |
360 | */ | |
6fc6879b JM |
361 | #define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16) |
362 | #define CERT_STORE_READONLY_FLAG 0x00008000 | |
363 | #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000 | |
6fc6879b JM |
364 | |
365 | #endif /* __MINGW32_VERSION */ | |
366 | ||
367 | ||
368 | struct cryptoapi_rsa_data { | |
369 | const CERT_CONTEXT *cert; | |
370 | HCRYPTPROV crypt_prov; | |
371 | DWORD key_spec; | |
372 | BOOL free_crypt_prov; | |
373 | }; | |
374 | ||
375 | ||
376 | static void cryptoapi_error(const char *msg) | |
377 | { | |
378 | wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u", | |
379 | msg, (unsigned int) GetLastError()); | |
380 | } | |
381 | ||
382 | ||
383 | static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from, | |
384 | unsigned char *to, RSA *rsa, int padding) | |
385 | { | |
386 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
387 | return 0; | |
388 | } | |
389 | ||
390 | ||
391 | static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from, | |
392 | unsigned char *to, RSA *rsa, int padding) | |
393 | { | |
394 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
395 | return 0; | |
396 | } | |
397 | ||
398 | ||
399 | static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from, | |
400 | unsigned char *to, RSA *rsa, int padding) | |
401 | { | |
402 | struct cryptoapi_rsa_data *priv = | |
403 | (struct cryptoapi_rsa_data *) rsa->meth->app_data; | |
404 | HCRYPTHASH hash; | |
405 | DWORD hash_size, len, i; | |
406 | unsigned char *buf = NULL; | |
407 | int ret = 0; | |
408 | ||
409 | if (priv == NULL) { | |
410 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
411 | ERR_R_PASSED_NULL_PARAMETER); | |
412 | return 0; | |
413 | } | |
414 | ||
415 | if (padding != RSA_PKCS1_PADDING) { | |
416 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
417 | RSA_R_UNKNOWN_PADDING_TYPE); | |
418 | return 0; | |
419 | } | |
420 | ||
421 | if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) { | |
422 | wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported", | |
423 | __func__); | |
424 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
425 | RSA_R_INVALID_MESSAGE_LENGTH); | |
426 | return 0; | |
427 | } | |
428 | ||
429 | if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash)) | |
430 | { | |
431 | cryptoapi_error("CryptCreateHash failed"); | |
432 | return 0; | |
433 | } | |
434 | ||
435 | len = sizeof(hash_size); | |
436 | if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len, | |
437 | 0)) { | |
438 | cryptoapi_error("CryptGetHashParam failed"); | |
439 | goto err; | |
440 | } | |
441 | ||
442 | if ((int) hash_size != flen) { | |
443 | wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)", | |
444 | (unsigned) hash_size, flen); | |
445 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
446 | RSA_R_INVALID_MESSAGE_LENGTH); | |
447 | goto err; | |
448 | } | |
449 | if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) { | |
450 | cryptoapi_error("CryptSetHashParam failed"); | |
451 | goto err; | |
452 | } | |
453 | ||
454 | len = RSA_size(rsa); | |
455 | buf = os_malloc(len); | |
456 | if (buf == NULL) { | |
457 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE); | |
458 | goto err; | |
459 | } | |
460 | ||
461 | if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) { | |
462 | cryptoapi_error("CryptSignHash failed"); | |
463 | goto err; | |
464 | } | |
465 | ||
466 | for (i = 0; i < len; i++) | |
467 | to[i] = buf[len - i - 1]; | |
468 | ret = len; | |
469 | ||
470 | err: | |
471 | os_free(buf); | |
472 | CryptDestroyHash(hash); | |
473 | ||
474 | return ret; | |
475 | } | |
476 | ||
477 | ||
478 | static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from, | |
479 | unsigned char *to, RSA *rsa, int padding) | |
480 | { | |
481 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
482 | return 0; | |
483 | } | |
484 | ||
485 | ||
486 | static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv) | |
487 | { | |
488 | if (priv == NULL) | |
489 | return; | |
490 | if (priv->crypt_prov && priv->free_crypt_prov) | |
491 | CryptReleaseContext(priv->crypt_prov, 0); | |
492 | if (priv->cert) | |
493 | CertFreeCertificateContext(priv->cert); | |
494 | os_free(priv); | |
495 | } | |
496 | ||
497 | ||
498 | static int cryptoapi_finish(RSA *rsa) | |
499 | { | |
500 | cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data); | |
501 | os_free((void *) rsa->meth); | |
502 | rsa->meth = NULL; | |
503 | return 1; | |
504 | } | |
505 | ||
506 | ||
507 | static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store) | |
508 | { | |
509 | HCERTSTORE cs; | |
510 | const CERT_CONTEXT *ret = NULL; | |
511 | ||
512 | cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0, | |
513 | store | CERT_STORE_OPEN_EXISTING_FLAG | | |
514 | CERT_STORE_READONLY_FLAG, L"MY"); | |
515 | if (cs == NULL) { | |
516 | cryptoapi_error("Failed to open 'My system store'"); | |
517 | return NULL; | |
518 | } | |
519 | ||
520 | if (strncmp(name, "cert://", 7) == 0) { | |
521 | unsigned short wbuf[255]; | |
522 | MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255); | |
523 | ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING | | |
524 | PKCS_7_ASN_ENCODING, | |
525 | 0, CERT_FIND_SUBJECT_STR, | |
526 | wbuf, NULL); | |
527 | } else if (strncmp(name, "hash://", 7) == 0) { | |
528 | CRYPT_HASH_BLOB blob; | |
529 | int len; | |
530 | const char *hash = name + 7; | |
531 | unsigned char *buf; | |
532 | ||
533 | len = os_strlen(hash) / 2; | |
534 | buf = os_malloc(len); | |
535 | if (buf && hexstr2bin(hash, buf, len) == 0) { | |
536 | blob.cbData = len; | |
537 | blob.pbData = buf; | |
538 | ret = CertFindCertificateInStore(cs, | |
539 | X509_ASN_ENCODING | | |
540 | PKCS_7_ASN_ENCODING, | |
541 | 0, CERT_FIND_HASH, | |
542 | &blob, NULL); | |
543 | } | |
544 | os_free(buf); | |
545 | } | |
546 | ||
547 | CertCloseStore(cs, 0); | |
548 | ||
549 | return ret; | |
550 | } | |
551 | ||
552 | ||
553 | static int tls_cryptoapi_cert(SSL *ssl, const char *name) | |
554 | { | |
555 | X509 *cert = NULL; | |
556 | RSA *rsa = NULL, *pub_rsa; | |
557 | struct cryptoapi_rsa_data *priv; | |
558 | RSA_METHOD *rsa_meth; | |
559 | ||
560 | if (name == NULL || | |
561 | (strncmp(name, "cert://", 7) != 0 && | |
562 | strncmp(name, "hash://", 7) != 0)) | |
563 | return -1; | |
564 | ||
565 | priv = os_zalloc(sizeof(*priv)); | |
566 | rsa_meth = os_zalloc(sizeof(*rsa_meth)); | |
567 | if (priv == NULL || rsa_meth == NULL) { | |
568 | wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory " | |
569 | "for CryptoAPI RSA method"); | |
570 | os_free(priv); | |
571 | os_free(rsa_meth); | |
572 | return -1; | |
573 | } | |
574 | ||
575 | priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER); | |
576 | if (priv->cert == NULL) { | |
577 | priv->cert = cryptoapi_find_cert( | |
578 | name, CERT_SYSTEM_STORE_LOCAL_MACHINE); | |
579 | } | |
580 | if (priv->cert == NULL) { | |
581 | wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate " | |
582 | "'%s'", name); | |
583 | goto err; | |
584 | } | |
585 | ||
fee31f76 JM |
586 | cert = d2i_X509(NULL, |
587 | (const unsigned char **) &priv->cert->pbCertEncoded, | |
6fc6879b JM |
588 | priv->cert->cbCertEncoded); |
589 | if (cert == NULL) { | |
590 | wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER " | |
591 | "encoding"); | |
592 | goto err; | |
593 | } | |
594 | ||
6fc6879b JM |
595 | if (!CryptAcquireCertificatePrivateKey(priv->cert, |
596 | CRYPT_ACQUIRE_COMPARE_KEY_FLAG, | |
597 | NULL, &priv->crypt_prov, | |
598 | &priv->key_spec, | |
599 | &priv->free_crypt_prov)) { | |
600 | cryptoapi_error("Failed to acquire a private key for the " | |
601 | "certificate"); | |
602 | goto err; | |
603 | } | |
604 | ||
605 | rsa_meth->name = "Microsoft CryptoAPI RSA Method"; | |
606 | rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc; | |
607 | rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec; | |
608 | rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc; | |
609 | rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec; | |
610 | rsa_meth->finish = cryptoapi_finish; | |
611 | rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK; | |
612 | rsa_meth->app_data = (char *) priv; | |
613 | ||
614 | rsa = RSA_new(); | |
615 | if (rsa == NULL) { | |
616 | SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, | |
617 | ERR_R_MALLOC_FAILURE); | |
618 | goto err; | |
619 | } | |
620 | ||
621 | if (!SSL_use_certificate(ssl, cert)) { | |
622 | RSA_free(rsa); | |
623 | rsa = NULL; | |
624 | goto err; | |
625 | } | |
626 | pub_rsa = cert->cert_info->key->pkey->pkey.rsa; | |
627 | X509_free(cert); | |
628 | cert = NULL; | |
629 | ||
630 | rsa->n = BN_dup(pub_rsa->n); | |
631 | rsa->e = BN_dup(pub_rsa->e); | |
632 | if (!RSA_set_method(rsa, rsa_meth)) | |
633 | goto err; | |
634 | ||
635 | if (!SSL_use_RSAPrivateKey(ssl, rsa)) | |
636 | goto err; | |
637 | RSA_free(rsa); | |
638 | ||
639 | return 0; | |
640 | ||
641 | err: | |
642 | if (cert) | |
643 | X509_free(cert); | |
644 | if (rsa) | |
645 | RSA_free(rsa); | |
646 | else { | |
647 | os_free(rsa_meth); | |
648 | cryptoapi_free_data(priv); | |
649 | } | |
650 | return -1; | |
651 | } | |
652 | ||
653 | ||
654 | static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name) | |
655 | { | |
656 | HCERTSTORE cs; | |
657 | PCCERT_CONTEXT ctx = NULL; | |
658 | X509 *cert; | |
659 | char buf[128]; | |
660 | const char *store; | |
661 | #ifdef UNICODE | |
662 | WCHAR *wstore; | |
663 | #endif /* UNICODE */ | |
664 | ||
6fc6879b JM |
665 | if (name == NULL || strncmp(name, "cert_store://", 13) != 0) |
666 | return -1; | |
667 | ||
668 | store = name + 13; | |
669 | #ifdef UNICODE | |
670 | wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR)); | |
671 | if (wstore == NULL) | |
672 | return -1; | |
673 | wsprintf(wstore, L"%S", store); | |
674 | cs = CertOpenSystemStore(0, wstore); | |
675 | os_free(wstore); | |
676 | #else /* UNICODE */ | |
677 | cs = CertOpenSystemStore(0, store); | |
678 | #endif /* UNICODE */ | |
679 | if (cs == NULL) { | |
680 | wpa_printf(MSG_DEBUG, "%s: failed to open system cert store " | |
681 | "'%s': error=%d", __func__, store, | |
682 | (int) GetLastError()); | |
683 | return -1; | |
684 | } | |
685 | ||
686 | while ((ctx = CertEnumCertificatesInStore(cs, ctx))) { | |
fee31f76 JM |
687 | cert = d2i_X509(NULL, |
688 | (const unsigned char **) &ctx->pbCertEncoded, | |
6fc6879b JM |
689 | ctx->cbCertEncoded); |
690 | if (cert == NULL) { | |
691 | wpa_printf(MSG_INFO, "CryptoAPI: Could not process " | |
692 | "X509 DER encoding for CA cert"); | |
693 | continue; | |
694 | } | |
695 | ||
696 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
697 | sizeof(buf)); | |
698 | wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for " | |
699 | "system certificate store: subject='%s'", buf); | |
700 | ||
f150db6c DB |
701 | if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), |
702 | cert)) { | |
6fc6879b JM |
703 | tls_show_errors(MSG_WARNING, __func__, |
704 | "Failed to add ca_cert to OpenSSL " | |
705 | "certificate store"); | |
706 | } | |
707 | ||
708 | X509_free(cert); | |
709 | } | |
710 | ||
711 | if (!CertCloseStore(cs, 0)) { | |
712 | wpa_printf(MSG_DEBUG, "%s: failed to close system cert store " | |
713 | "'%s': error=%d", __func__, name + 13, | |
714 | (int) GetLastError()); | |
715 | } | |
716 | ||
717 | return 0; | |
718 | } | |
719 | ||
720 | ||
721 | #else /* CONFIG_NATIVE_WINDOWS */ | |
722 | ||
723 | static int tls_cryptoapi_cert(SSL *ssl, const char *name) | |
724 | { | |
725 | return -1; | |
726 | } | |
727 | ||
728 | #endif /* CONFIG_NATIVE_WINDOWS */ | |
729 | ||
730 | ||
731 | static void ssl_info_cb(const SSL *ssl, int where, int ret) | |
732 | { | |
733 | const char *str; | |
734 | int w; | |
735 | ||
736 | wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret); | |
737 | w = where & ~SSL_ST_MASK; | |
738 | if (w & SSL_ST_CONNECT) | |
739 | str = "SSL_connect"; | |
740 | else if (w & SSL_ST_ACCEPT) | |
741 | str = "SSL_accept"; | |
742 | else | |
743 | str = "undefined"; | |
744 | ||
745 | if (where & SSL_CB_LOOP) { | |
746 | wpa_printf(MSG_DEBUG, "SSL: %s:%s", | |
747 | str, SSL_state_string_long(ssl)); | |
748 | } else if (where & SSL_CB_ALERT) { | |
7c0e1e27 | 749 | struct tls_connection *conn = SSL_get_app_data((SSL *) ssl); |
6fc6879b JM |
750 | wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s", |
751 | where & SSL_CB_READ ? | |
752 | "read (remote end reported an error)" : | |
753 | "write (local SSL3 detected an error)", | |
754 | SSL_alert_type_string_long(ret), | |
755 | SSL_alert_desc_string_long(ret)); | |
756 | if ((ret >> 8) == SSL3_AL_FATAL) { | |
6fc6879b JM |
757 | if (where & SSL_CB_READ) |
758 | conn->read_alerts++; | |
759 | else | |
760 | conn->write_alerts++; | |
761 | } | |
7c0e1e27 | 762 | if (conn->context->event_cb != NULL) { |
dd7fec1f | 763 | union tls_event_data ev; |
7c0e1e27 | 764 | struct tls_context *context = conn->context; |
dd7fec1f PS |
765 | os_memset(&ev, 0, sizeof(ev)); |
766 | ev.alert.is_local = !(where & SSL_CB_READ); | |
767 | ev.alert.type = SSL_alert_type_string_long(ret); | |
768 | ev.alert.description = SSL_alert_desc_string_long(ret); | |
7c0e1e27 | 769 | context->event_cb(context->cb_ctx, TLS_ALERT, &ev); |
dd7fec1f | 770 | } |
6fc6879b JM |
771 | } else if (where & SSL_CB_EXIT && ret <= 0) { |
772 | wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s", | |
773 | str, ret == 0 ? "failed" : "error", | |
774 | SSL_state_string_long(ssl)); | |
775 | } | |
776 | } | |
777 | ||
778 | ||
779 | #ifndef OPENSSL_NO_ENGINE | |
780 | /** | |
781 | * tls_engine_load_dynamic_generic - load any openssl engine | |
782 | * @pre: an array of commands and values that load an engine initialized | |
783 | * in the engine specific function | |
784 | * @post: an array of commands and values that initialize an already loaded | |
785 | * engine (or %NULL if not required) | |
786 | * @id: the engine id of the engine to load (only required if post is not %NULL | |
787 | * | |
788 | * This function is a generic function that loads any openssl engine. | |
789 | * | |
790 | * Returns: 0 on success, -1 on failure | |
791 | */ | |
792 | static int tls_engine_load_dynamic_generic(const char *pre[], | |
793 | const char *post[], const char *id) | |
794 | { | |
795 | ENGINE *engine; | |
796 | const char *dynamic_id = "dynamic"; | |
797 | ||
798 | engine = ENGINE_by_id(id); | |
799 | if (engine) { | |
6fc6879b JM |
800 | wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already " |
801 | "available", id); | |
c3d7fb7e DW |
802 | /* |
803 | * If it was auto-loaded by ENGINE_by_id() we might still | |
804 | * need to tell it which PKCS#11 module to use in legacy | |
805 | * (non-p11-kit) environments. Do so now; even if it was | |
806 | * properly initialised before, setting it again will be | |
807 | * harmless. | |
808 | */ | |
809 | goto found; | |
6fc6879b JM |
810 | } |
811 | ERR_clear_error(); | |
812 | ||
813 | engine = ENGINE_by_id(dynamic_id); | |
814 | if (engine == NULL) { | |
815 | wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]", | |
816 | dynamic_id, | |
817 | ERR_error_string(ERR_get_error(), NULL)); | |
818 | return -1; | |
819 | } | |
820 | ||
821 | /* Perform the pre commands. This will load the engine. */ | |
822 | while (pre && pre[0]) { | |
823 | wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]); | |
824 | if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) { | |
825 | wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: " | |
826 | "%s %s [%s]", pre[0], pre[1], | |
827 | ERR_error_string(ERR_get_error(), NULL)); | |
828 | ENGINE_free(engine); | |
829 | return -1; | |
830 | } | |
831 | pre += 2; | |
832 | } | |
833 | ||
834 | /* | |
835 | * Free the reference to the "dynamic" engine. The loaded engine can | |
836 | * now be looked up using ENGINE_by_id(). | |
837 | */ | |
838 | ENGINE_free(engine); | |
839 | ||
840 | engine = ENGINE_by_id(id); | |
841 | if (engine == NULL) { | |
842 | wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]", | |
843 | id, ERR_error_string(ERR_get_error(), NULL)); | |
844 | return -1; | |
845 | } | |
c3d7fb7e | 846 | found: |
6fc6879b JM |
847 | while (post && post[0]) { |
848 | wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]); | |
849 | if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) { | |
850 | wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:" | |
851 | " %s %s [%s]", post[0], post[1], | |
852 | ERR_error_string(ERR_get_error(), NULL)); | |
853 | ENGINE_remove(engine); | |
854 | ENGINE_free(engine); | |
855 | return -1; | |
856 | } | |
857 | post += 2; | |
858 | } | |
859 | ENGINE_free(engine); | |
860 | ||
861 | return 0; | |
862 | } | |
863 | ||
864 | ||
865 | /** | |
866 | * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc | |
867 | * @pkcs11_so_path: pksc11_so_path from the configuration | |
868 | * @pcks11_module_path: pkcs11_module_path from the configuration | |
869 | */ | |
870 | static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path, | |
871 | const char *pkcs11_module_path) | |
872 | { | |
873 | char *engine_id = "pkcs11"; | |
874 | const char *pre_cmd[] = { | |
875 | "SO_PATH", NULL /* pkcs11_so_path */, | |
876 | "ID", NULL /* engine_id */, | |
877 | "LIST_ADD", "1", | |
878 | /* "NO_VCHECK", "1", */ | |
879 | "LOAD", NULL, | |
880 | NULL, NULL | |
881 | }; | |
882 | const char *post_cmd[] = { | |
883 | "MODULE_PATH", NULL /* pkcs11_module_path */, | |
884 | NULL, NULL | |
885 | }; | |
886 | ||
5c8ab0d4 | 887 | if (!pkcs11_so_path) |
6fc6879b JM |
888 | return 0; |
889 | ||
890 | pre_cmd[1] = pkcs11_so_path; | |
891 | pre_cmd[3] = engine_id; | |
5c8ab0d4 DW |
892 | if (pkcs11_module_path) |
893 | post_cmd[1] = pkcs11_module_path; | |
894 | else | |
895 | post_cmd[0] = NULL; | |
6fc6879b JM |
896 | |
897 | wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s", | |
898 | pkcs11_so_path); | |
899 | ||
900 | return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id); | |
901 | } | |
902 | ||
903 | ||
904 | /** | |
905 | * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc | |
906 | * @opensc_so_path: opensc_so_path from the configuration | |
907 | */ | |
908 | static int tls_engine_load_dynamic_opensc(const char *opensc_so_path) | |
909 | { | |
910 | char *engine_id = "opensc"; | |
911 | const char *pre_cmd[] = { | |
912 | "SO_PATH", NULL /* opensc_so_path */, | |
913 | "ID", NULL /* engine_id */, | |
914 | "LIST_ADD", "1", | |
915 | "LOAD", NULL, | |
916 | NULL, NULL | |
917 | }; | |
918 | ||
919 | if (!opensc_so_path) | |
920 | return 0; | |
921 | ||
922 | pre_cmd[1] = opensc_so_path; | |
923 | pre_cmd[3] = engine_id; | |
924 | ||
925 | wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s", | |
926 | opensc_so_path); | |
927 | ||
928 | return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id); | |
929 | } | |
930 | #endif /* OPENSSL_NO_ENGINE */ | |
931 | ||
932 | ||
acf36f31 JM |
933 | static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess) |
934 | { | |
935 | struct wpabuf *buf; | |
936 | ||
937 | if (tls_ex_idx_session < 0) | |
938 | return; | |
939 | buf = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
940 | if (!buf) | |
941 | return; | |
942 | wpa_printf(MSG_DEBUG, | |
943 | "OpenSSL: Free application session data %p (sess %p)", | |
944 | buf, sess); | |
945 | wpabuf_free(buf); | |
946 | ||
947 | SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL); | |
948 | } | |
949 | ||
950 | ||
6fc6879b JM |
951 | void * tls_init(const struct tls_config *conf) |
952 | { | |
bd9b8b2b | 953 | struct tls_data *data; |
6fc6879b | 954 | SSL_CTX *ssl; |
7c0e1e27 | 955 | struct tls_context *context; |
b7328434 | 956 | const char *ciphers; |
6fc6879b JM |
957 | |
958 | if (tls_openssl_ref_count == 0) { | |
7c0e1e27 PS |
959 | tls_global = context = tls_context_new(conf); |
960 | if (context == NULL) | |
00468b46 | 961 | return NULL; |
76f04b38 JM |
962 | #ifdef CONFIG_FIPS |
963 | #ifdef OPENSSL_FIPS | |
cf123d7f | 964 | if (conf && conf->fips_mode) { |
4fc53159 JM |
965 | static int fips_enabled = 0; |
966 | ||
967 | if (!fips_enabled && !FIPS_mode_set(1)) { | |
76f04b38 JM |
968 | wpa_printf(MSG_ERROR, "Failed to enable FIPS " |
969 | "mode"); | |
970 | ERR_load_crypto_strings(); | |
971 | ERR_print_errors_fp(stderr); | |
b36540db JM |
972 | os_free(tls_global); |
973 | tls_global = NULL; | |
76f04b38 | 974 | return NULL; |
4fc53159 | 975 | } else { |
76f04b38 | 976 | wpa_printf(MSG_INFO, "Running in FIPS mode"); |
4fc53159 JM |
977 | fips_enabled = 1; |
978 | } | |
76f04b38 JM |
979 | } |
980 | #else /* OPENSSL_FIPS */ | |
cf123d7f | 981 | if (conf && conf->fips_mode) { |
76f04b38 JM |
982 | wpa_printf(MSG_ERROR, "FIPS mode requested, but not " |
983 | "supported"); | |
b36540db JM |
984 | os_free(tls_global); |
985 | tls_global = NULL; | |
76f04b38 JM |
986 | return NULL; |
987 | } | |
988 | #endif /* OPENSSL_FIPS */ | |
989 | #endif /* CONFIG_FIPS */ | |
ba3658cf BS |
990 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || \ |
991 | (defined(LIBRESSL_VERSION_NUMBER) && \ | |
992 | LIBRESSL_VERSION_NUMBER < 0x20700000L) | |
6fc6879b JM |
993 | SSL_load_error_strings(); |
994 | SSL_library_init(); | |
fee31f76 | 995 | #ifndef OPENSSL_NO_SHA256 |
e1ffdfc1 JM |
996 | EVP_add_digest(EVP_sha256()); |
997 | #endif /* OPENSSL_NO_SHA256 */ | |
6fc6879b JM |
998 | /* TODO: if /dev/urandom is available, PRNG is seeded |
999 | * automatically. If this is not the case, random data should | |
1000 | * be added here. */ | |
1001 | ||
1002 | #ifdef PKCS12_FUNCS | |
1056dad7 JM |
1003 | #ifndef OPENSSL_NO_RC2 |
1004 | /* | |
1005 | * 40-bit RC2 is commonly used in PKCS#12 files, so enable it. | |
1006 | * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8 | |
1007 | * versions, but it looks like OpenSSL 1.0.0 does not do that | |
1008 | * anymore. | |
1009 | */ | |
1010 | EVP_add_cipher(EVP_rc2_40_cbc()); | |
1011 | #endif /* OPENSSL_NO_RC2 */ | |
6fc6879b JM |
1012 | PKCS12_PBE_add(); |
1013 | #endif /* PKCS12_FUNCS */ | |
29bc76e3 | 1014 | #endif /* < 1.1.0 */ |
7c0e1e27 | 1015 | } else { |
7c0e1e27 PS |
1016 | context = tls_context_new(conf); |
1017 | if (context == NULL) | |
1018 | return NULL; | |
6fc6879b JM |
1019 | } |
1020 | tls_openssl_ref_count++; | |
1021 | ||
bd9b8b2b JM |
1022 | data = os_zalloc(sizeof(*data)); |
1023 | if (data) | |
1024 | ssl = SSL_CTX_new(SSLv23_method()); | |
1025 | else | |
1026 | ssl = NULL; | |
7c0e1e27 PS |
1027 | if (ssl == NULL) { |
1028 | tls_openssl_ref_count--; | |
a288da61 JM |
1029 | if (context != tls_global) |
1030 | os_free(context); | |
7c0e1e27 PS |
1031 | if (tls_openssl_ref_count == 0) { |
1032 | os_free(tls_global); | |
1033 | tls_global = NULL; | |
7c0e1e27 | 1034 | } |
1f1e599b | 1035 | os_free(data); |
6fc6879b | 1036 | return NULL; |
7c0e1e27 | 1037 | } |
bd9b8b2b | 1038 | data->ssl = ssl; |
159a7fbd | 1039 | if (conf) { |
acf36f31 | 1040 | data->tls_session_lifetime = conf->tls_session_lifetime; |
159a7fbd JB |
1041 | data->crl_reload_interval = conf->crl_reload_interval; |
1042 | } | |
6fc6879b | 1043 | |
35efa247 JM |
1044 | SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2); |
1045 | SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3); | |
1046 | ||
d7f12e4e JM |
1047 | #ifdef SSL_MODE_NO_AUTO_CHAIN |
1048 | /* Number of deployed use cases assume the default OpenSSL behavior of | |
1049 | * auto chaining the local certificate is in use. BoringSSL removed this | |
1050 | * functionality by default, so we need to restore it here to avoid | |
1051 | * breaking existing use cases. */ | |
1052 | SSL_CTX_clear_mode(ssl, SSL_MODE_NO_AUTO_CHAIN); | |
1053 | #endif /* SSL_MODE_NO_AUTO_CHAIN */ | |
1054 | ||
6fc6879b | 1055 | SSL_CTX_set_info_callback(ssl, ssl_info_cb); |
7c0e1e27 | 1056 | SSL_CTX_set_app_data(ssl, context); |
acf36f31 JM |
1057 | if (data->tls_session_lifetime > 0) { |
1058 | SSL_CTX_set_quiet_shutdown(ssl, 1); | |
1059 | /* | |
1060 | * Set default context here. In practice, this will be replaced | |
1061 | * by the per-EAP method context in tls_connection_set_verify(). | |
1062 | */ | |
1063 | SSL_CTX_set_session_id_context(ssl, (u8 *) "hostapd", 7); | |
1064 | SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_SERVER); | |
1065 | SSL_CTX_set_timeout(ssl, data->tls_session_lifetime); | |
1066 | SSL_CTX_sess_set_remove_cb(ssl, remove_session_cb); | |
1067 | } else { | |
1068 | SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_OFF); | |
1069 | } | |
1070 | ||
1071 | if (tls_ex_idx_session < 0) { | |
1072 | tls_ex_idx_session = SSL_SESSION_get_ex_new_index( | |
1073 | 0, NULL, NULL, NULL, NULL); | |
1074 | if (tls_ex_idx_session < 0) { | |
1075 | tls_deinit(data); | |
1076 | return NULL; | |
1077 | } | |
1078 | } | |
6fc6879b JM |
1079 | |
1080 | #ifndef OPENSSL_NO_ENGINE | |
6326fa0c DW |
1081 | wpa_printf(MSG_DEBUG, "ENGINE: Loading builtin engines"); |
1082 | ENGINE_load_builtin_engines(); | |
ddda6276 | 1083 | |
6fc6879b JM |
1084 | if (conf && |
1085 | (conf->opensc_engine_path || conf->pkcs11_engine_path || | |
1086 | conf->pkcs11_module_path)) { | |
6fc6879b JM |
1087 | if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) || |
1088 | tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path, | |
1089 | conf->pkcs11_module_path)) { | |
bd9b8b2b | 1090 | tls_deinit(data); |
6fc6879b JM |
1091 | return NULL; |
1092 | } | |
1093 | } | |
1094 | #endif /* OPENSSL_NO_ENGINE */ | |
1095 | ||
b7328434 JM |
1096 | if (conf && conf->openssl_ciphers) |
1097 | ciphers = conf->openssl_ciphers; | |
1098 | else | |
2b9891bd | 1099 | ciphers = TLS_DEFAULT_CIPHERS; |
b7328434 JM |
1100 | if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) { |
1101 | wpa_printf(MSG_ERROR, | |
1102 | "OpenSSL: Failed to set cipher string '%s'", | |
1103 | ciphers); | |
bd9b8b2b | 1104 | tls_deinit(data); |
b7328434 JM |
1105 | return NULL; |
1106 | } | |
1107 | ||
bd9b8b2b | 1108 | return data; |
6fc6879b JM |
1109 | } |
1110 | ||
1111 | ||
1112 | void tls_deinit(void *ssl_ctx) | |
1113 | { | |
bd9b8b2b JM |
1114 | struct tls_data *data = ssl_ctx; |
1115 | SSL_CTX *ssl = data->ssl; | |
7c0e1e27 PS |
1116 | struct tls_context *context = SSL_CTX_get_app_data(ssl); |
1117 | if (context != tls_global) | |
1118 | os_free(context); | |
acf36f31 JM |
1119 | if (data->tls_session_lifetime > 0) |
1120 | SSL_CTX_flush_sessions(ssl, 0); | |
159a7fbd | 1121 | os_free(data->ca_cert); |
6fc6879b JM |
1122 | SSL_CTX_free(ssl); |
1123 | ||
1124 | tls_openssl_ref_count--; | |
1125 | if (tls_openssl_ref_count == 0) { | |
ba3658cf BS |
1126 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || \ |
1127 | (defined(LIBRESSL_VERSION_NUMBER) && \ | |
1128 | LIBRESSL_VERSION_NUMBER < 0x20700000L) | |
6fc6879b JM |
1129 | #ifndef OPENSSL_NO_ENGINE |
1130 | ENGINE_cleanup(); | |
1131 | #endif /* OPENSSL_NO_ENGINE */ | |
1132 | CRYPTO_cleanup_all_ex_data(); | |
a8572960 | 1133 | ERR_remove_thread_state(NULL); |
6fc6879b JM |
1134 | ERR_free_strings(); |
1135 | EVP_cleanup(); | |
29bc76e3 | 1136 | #endif /* < 1.1.0 */ |
080585c0 JM |
1137 | os_free(tls_global->ocsp_stapling_response); |
1138 | tls_global->ocsp_stapling_response = NULL; | |
00468b46 JM |
1139 | os_free(tls_global); |
1140 | tls_global = NULL; | |
6fc6879b | 1141 | } |
bd9b8b2b | 1142 | |
841205a1 | 1143 | os_free(data->check_cert_subject); |
bd9b8b2b | 1144 | os_free(data); |
6fc6879b JM |
1145 | } |
1146 | ||
1147 | ||
fd4fb281 MG |
1148 | #ifndef OPENSSL_NO_ENGINE |
1149 | ||
1150 | /* Cryptoki return values */ | |
1151 | #define CKR_PIN_INCORRECT 0x000000a0 | |
1152 | #define CKR_PIN_INVALID 0x000000a1 | |
1153 | #define CKR_PIN_LEN_RANGE 0x000000a2 | |
1154 | ||
1155 | /* libp11 */ | |
1156 | #define ERR_LIB_PKCS11 ERR_LIB_USER | |
1157 | ||
1158 | static int tls_is_pin_error(unsigned int err) | |
1159 | { | |
1160 | return ERR_GET_LIB(err) == ERR_LIB_PKCS11 && | |
1161 | (ERR_GET_REASON(err) == CKR_PIN_INCORRECT || | |
1162 | ERR_GET_REASON(err) == CKR_PIN_INVALID || | |
1163 | ERR_GET_REASON(err) == CKR_PIN_LEN_RANGE); | |
1164 | } | |
1165 | ||
1166 | #endif /* OPENSSL_NO_ENGINE */ | |
1167 | ||
1168 | ||
aeeb0bca AL |
1169 | #ifdef ANDROID |
1170 | /* EVP_PKEY_from_keystore comes from system/security/keystore-engine. */ | |
1171 | EVP_PKEY * EVP_PKEY_from_keystore(const char *key_id); | |
1172 | #endif /* ANDROID */ | |
1173 | ||
6fc6879b | 1174 | static int tls_engine_init(struct tls_connection *conn, const char *engine_id, |
e59c91af DS |
1175 | const char *pin, const char *key_id, |
1176 | const char *cert_id, const char *ca_cert_id) | |
6fc6879b | 1177 | { |
aeeb0bca AL |
1178 | #if defined(ANDROID) && defined(OPENSSL_IS_BORINGSSL) |
1179 | #if !defined(OPENSSL_NO_ENGINE) | |
1180 | #error "This code depends on OPENSSL_NO_ENGINE being defined by BoringSSL." | |
1181 | #endif | |
1182 | if (!key_id) | |
1183 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1184 | conn->engine = NULL; | |
1185 | conn->private_key = EVP_PKEY_from_keystore(key_id); | |
1186 | if (!conn->private_key) { | |
1187 | wpa_printf(MSG_ERROR, | |
1188 | "ENGINE: cannot load private key with id '%s' [%s]", | |
1189 | key_id, | |
1190 | ERR_error_string(ERR_get_error(), NULL)); | |
1191 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1192 | } | |
1193 | #endif /* ANDROID && OPENSSL_IS_BORINGSSL */ | |
1194 | ||
6fc6879b JM |
1195 | #ifndef OPENSSL_NO_ENGINE |
1196 | int ret = -1; | |
1197 | if (engine_id == NULL) { | |
1198 | wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set"); | |
1199 | return -1; | |
1200 | } | |
6fc6879b JM |
1201 | |
1202 | ERR_clear_error(); | |
1176ab6d KR |
1203 | #ifdef ANDROID |
1204 | ENGINE_load_dynamic(); | |
1205 | #endif | |
6fc6879b JM |
1206 | conn->engine = ENGINE_by_id(engine_id); |
1207 | if (!conn->engine) { | |
1208 | wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]", | |
1209 | engine_id, ERR_error_string(ERR_get_error(), NULL)); | |
1210 | goto err; | |
1211 | } | |
1212 | if (ENGINE_init(conn->engine) != 1) { | |
1213 | wpa_printf(MSG_ERROR, "ENGINE: engine init failed " | |
1214 | "(engine: %s) [%s]", engine_id, | |
1215 | ERR_error_string(ERR_get_error(), NULL)); | |
1216 | goto err; | |
1217 | } | |
1218 | wpa_printf(MSG_DEBUG, "ENGINE: engine initialized"); | |
1219 | ||
1176ab6d | 1220 | #ifndef ANDROID |
a642a52b | 1221 | if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) { |
6fc6879b JM |
1222 | wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]", |
1223 | ERR_error_string(ERR_get_error(), NULL)); | |
1224 | goto err; | |
1225 | } | |
1176ab6d | 1226 | #endif |
3d268b8d | 1227 | if (key_id) { |
a642a52b DW |
1228 | /* |
1229 | * Ensure that the ENGINE does not attempt to use the OpenSSL | |
1230 | * UI system to obtain a PIN, if we didn't provide one. | |
1231 | */ | |
1232 | struct { | |
1233 | const void *password; | |
1234 | const char *prompt_info; | |
1235 | } key_cb = { "", NULL }; | |
1236 | ||
3d268b8d DW |
1237 | /* load private key first in-case PIN is required for cert */ |
1238 | conn->private_key = ENGINE_load_private_key(conn->engine, | |
a642a52b DW |
1239 | key_id, NULL, |
1240 | &key_cb); | |
3d268b8d | 1241 | if (!conn->private_key) { |
fd4fb281 MG |
1242 | unsigned long err = ERR_get_error(); |
1243 | ||
3d268b8d DW |
1244 | wpa_printf(MSG_ERROR, |
1245 | "ENGINE: cannot load private key with id '%s' [%s]", | |
1246 | key_id, | |
fd4fb281 MG |
1247 | ERR_error_string(err, NULL)); |
1248 | if (tls_is_pin_error(err)) | |
1249 | ret = TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN; | |
1250 | else | |
1251 | ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
3d268b8d DW |
1252 | goto err; |
1253 | } | |
6fc6879b | 1254 | } |
e59c91af DS |
1255 | |
1256 | /* handle a certificate and/or CA certificate */ | |
1257 | if (cert_id || ca_cert_id) { | |
1258 | const char *cmd_name = "LOAD_CERT_CTRL"; | |
1259 | ||
1260 | /* test if the engine supports a LOAD_CERT_CTRL */ | |
1261 | if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME, | |
1262 | 0, (void *)cmd_name, NULL)) { | |
1263 | wpa_printf(MSG_ERROR, "ENGINE: engine does not support" | |
1264 | " loading certificates"); | |
1265 | ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1266 | goto err; | |
1267 | } | |
1268 | } | |
1269 | ||
6fc6879b JM |
1270 | return 0; |
1271 | ||
1272 | err: | |
1273 | if (conn->engine) { | |
1274 | ENGINE_free(conn->engine); | |
1275 | conn->engine = NULL; | |
1276 | } | |
1277 | ||
1278 | if (conn->private_key) { | |
1279 | EVP_PKEY_free(conn->private_key); | |
1280 | conn->private_key = NULL; | |
1281 | } | |
1282 | ||
1283 | return ret; | |
1284 | #else /* OPENSSL_NO_ENGINE */ | |
1285 | return 0; | |
1286 | #endif /* OPENSSL_NO_ENGINE */ | |
1287 | } | |
1288 | ||
1289 | ||
1290 | static void tls_engine_deinit(struct tls_connection *conn) | |
1291 | { | |
aeeb0bca | 1292 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
1293 | wpa_printf(MSG_DEBUG, "ENGINE: engine deinit"); |
1294 | if (conn->private_key) { | |
1295 | EVP_PKEY_free(conn->private_key); | |
1296 | conn->private_key = NULL; | |
1297 | } | |
1298 | if (conn->engine) { | |
aeeb0bca | 1299 | #if !defined(OPENSSL_IS_BORINGSSL) |
6fc6879b | 1300 | ENGINE_finish(conn->engine); |
aeeb0bca | 1301 | #endif /* !OPENSSL_IS_BORINGSSL */ |
6fc6879b JM |
1302 | conn->engine = NULL; |
1303 | } | |
aeeb0bca | 1304 | #endif /* ANDROID || !OPENSSL_NO_ENGINE */ |
6fc6879b JM |
1305 | } |
1306 | ||
1307 | ||
1308 | int tls_get_errors(void *ssl_ctx) | |
1309 | { | |
1310 | int count = 0; | |
1311 | unsigned long err; | |
1312 | ||
1313 | while ((err = ERR_get_error())) { | |
1314 | wpa_printf(MSG_INFO, "TLS - SSL error: %s", | |
1315 | ERR_error_string(err, NULL)); | |
1316 | count++; | |
1317 | } | |
1318 | ||
1319 | return count; | |
1320 | } | |
1321 | ||
bb52293e | 1322 | |
cbb15497 JM |
1323 | static const char * openssl_content_type(int content_type) |
1324 | { | |
1325 | switch (content_type) { | |
1326 | case 20: | |
1327 | return "change cipher spec"; | |
1328 | case 21: | |
1329 | return "alert"; | |
1330 | case 22: | |
1331 | return "handshake"; | |
1332 | case 23: | |
1333 | return "application data"; | |
1334 | case 24: | |
1335 | return "heartbeat"; | |
1336 | case 256: | |
1337 | return "TLS header info"; /* pseudo content type */ | |
1338 | default: | |
1339 | return "?"; | |
1340 | } | |
1341 | } | |
1342 | ||
1343 | ||
1344 | static const char * openssl_handshake_type(int content_type, const u8 *buf, | |
1345 | size_t len) | |
1346 | { | |
1347 | if (content_type != 22 || !buf || len == 0) | |
1348 | return ""; | |
1349 | switch (buf[0]) { | |
1350 | case 0: | |
1351 | return "hello request"; | |
1352 | case 1: | |
1353 | return "client hello"; | |
1354 | case 2: | |
1355 | return "server hello"; | |
e5bffe1a JM |
1356 | case 3: |
1357 | return "hello verify request"; | |
cbb15497 JM |
1358 | case 4: |
1359 | return "new session ticket"; | |
e5bffe1a JM |
1360 | case 5: |
1361 | return "end of early data"; | |
1362 | case 6: | |
1363 | return "hello retry request"; | |
1364 | case 8: | |
1365 | return "encrypted extensions"; | |
cbb15497 JM |
1366 | case 11: |
1367 | return "certificate"; | |
1368 | case 12: | |
1369 | return "server key exchange"; | |
1370 | case 13: | |
1371 | return "certificate request"; | |
1372 | case 14: | |
1373 | return "server hello done"; | |
1374 | case 15: | |
1375 | return "certificate verify"; | |
1376 | case 16: | |
1377 | return "client key exchange"; | |
1378 | case 20: | |
1379 | return "finished"; | |
1380 | case 21: | |
1381 | return "certificate url"; | |
1382 | case 22: | |
1383 | return "certificate status"; | |
e5bffe1a JM |
1384 | case 23: |
1385 | return "supplemental data"; | |
1386 | case 24: | |
1387 | return "key update"; | |
1388 | case 254: | |
1389 | return "message hash"; | |
cbb15497 JM |
1390 | default: |
1391 | return "?"; | |
1392 | } | |
1393 | } | |
1394 | ||
1395 | ||
1c9663cf JM |
1396 | #ifdef CONFIG_SUITEB |
1397 | ||
1398 | static void check_server_hello(struct tls_connection *conn, | |
1399 | const u8 *pos, const u8 *end) | |
1400 | { | |
1401 | size_t payload_len, id_len; | |
1402 | ||
1403 | /* | |
1404 | * Parse ServerHello to get the selected cipher suite since OpenSSL does | |
1405 | * not make it cleanly available during handshake and we need to know | |
1406 | * whether DHE was selected. | |
1407 | */ | |
1408 | ||
1409 | if (end - pos < 3) | |
1410 | return; | |
1411 | payload_len = WPA_GET_BE24(pos); | |
1412 | pos += 3; | |
1413 | ||
1414 | if ((size_t) (end - pos) < payload_len) | |
1415 | return; | |
1416 | end = pos + payload_len; | |
1417 | ||
1418 | /* Skip Version and Random */ | |
1419 | if (end - pos < 2 + SSL3_RANDOM_SIZE) | |
1420 | return; | |
1421 | pos += 2 + SSL3_RANDOM_SIZE; | |
1422 | ||
1423 | /* Skip Session ID */ | |
1424 | if (end - pos < 1) | |
1425 | return; | |
1426 | id_len = *pos++; | |
1427 | if ((size_t) (end - pos) < id_len) | |
1428 | return; | |
1429 | pos += id_len; | |
1430 | ||
1431 | if (end - pos < 2) | |
1432 | return; | |
1433 | conn->cipher_suite = WPA_GET_BE16(pos); | |
1434 | wpa_printf(MSG_DEBUG, "OpenSSL: Server selected cipher suite 0x%x", | |
1435 | conn->cipher_suite); | |
1436 | } | |
1437 | ||
1438 | ||
1439 | static void check_server_key_exchange(SSL *ssl, struct tls_connection *conn, | |
1440 | const u8 *pos, const u8 *end) | |
1441 | { | |
1442 | size_t payload_len; | |
1443 | u16 dh_len; | |
1444 | BIGNUM *p; | |
1445 | int bits; | |
1446 | ||
1447 | if (!(conn->flags & TLS_CONN_SUITEB)) | |
1448 | return; | |
1449 | ||
1450 | /* DHE is enabled only with DHE-RSA-AES256-GCM-SHA384 */ | |
1451 | if (conn->cipher_suite != 0x9f) | |
1452 | return; | |
1453 | ||
1454 | if (end - pos < 3) | |
1455 | return; | |
1456 | payload_len = WPA_GET_BE24(pos); | |
1457 | pos += 3; | |
1458 | ||
1459 | if ((size_t) (end - pos) < payload_len) | |
1460 | return; | |
1461 | end = pos + payload_len; | |
1462 | ||
1463 | if (end - pos < 2) | |
1464 | return; | |
1465 | dh_len = WPA_GET_BE16(pos); | |
1466 | pos += 2; | |
1467 | ||
1468 | if ((size_t) (end - pos) < dh_len) | |
1469 | return; | |
1470 | p = BN_bin2bn(pos, dh_len, NULL); | |
1471 | if (!p) | |
1472 | return; | |
1473 | ||
1474 | bits = BN_num_bits(p); | |
1475 | BN_free(p); | |
1476 | ||
1477 | conn->server_dh_prime_len = bits; | |
1478 | wpa_printf(MSG_DEBUG, "OpenSSL: Server DH prime length: %d bits", | |
1479 | conn->server_dh_prime_len); | |
1480 | } | |
1481 | ||
1482 | #endif /* CONFIG_SUITEB */ | |
1483 | ||
1484 | ||
bb52293e JM |
1485 | static void tls_msg_cb(int write_p, int version, int content_type, |
1486 | const void *buf, size_t len, SSL *ssl, void *arg) | |
1487 | { | |
1488 | struct tls_connection *conn = arg; | |
1489 | const u8 *pos = buf; | |
1490 | ||
faf8f293 JM |
1491 | if (write_p == 2) { |
1492 | wpa_printf(MSG_DEBUG, | |
1493 | "OpenSSL: session ver=0x%x content_type=%d", | |
1494 | version, content_type); | |
1495 | wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Data", buf, len); | |
1496 | return; | |
1497 | } | |
1498 | ||
cbb15497 JM |
1499 | wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d (%s/%s)", |
1500 | write_p ? "TX" : "RX", version, content_type, | |
1501 | openssl_content_type(content_type), | |
1502 | openssl_handshake_type(content_type, buf, len)); | |
bb52293e JM |
1503 | wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len); |
1504 | if (content_type == 24 && len >= 3 && pos[0] == 1) { | |
1505 | size_t payload_len = WPA_GET_BE16(pos + 1); | |
1506 | if (payload_len + 3 > len) { | |
1507 | wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected"); | |
1508 | conn->invalid_hb_used = 1; | |
1509 | } | |
1510 | } | |
1c9663cf JM |
1511 | |
1512 | #ifdef CONFIG_SUITEB | |
1513 | /* | |
1514 | * Need to parse these handshake messages to be able to check DH prime | |
1515 | * length since OpenSSL does not expose the new cipher suite and DH | |
1516 | * parameters during handshake (e.g., for cert_cb() callback). | |
1517 | */ | |
1518 | if (content_type == 22 && pos && len > 0 && pos[0] == 2) | |
1519 | check_server_hello(conn, pos + 1, pos + len); | |
1520 | if (content_type == 22 && pos && len > 0 && pos[0] == 12) | |
1521 | check_server_key_exchange(ssl, conn, pos + 1, pos + len); | |
1522 | #endif /* CONFIG_SUITEB */ | |
bb52293e JM |
1523 | } |
1524 | ||
1525 | ||
6a31a31d | 1526 | struct tls_connection * tls_connection_init(void *ssl_ctx) |
6fc6879b | 1527 | { |
bd9b8b2b JM |
1528 | struct tls_data *data = ssl_ctx; |
1529 | SSL_CTX *ssl = data->ssl; | |
6a31a31d | 1530 | struct tls_connection *conn; |
fca25ef4 | 1531 | long options; |
159a7fbd JB |
1532 | X509_STORE *new_cert_store; |
1533 | struct os_reltime now; | |
6a31a31d | 1534 | struct tls_context *context = SSL_CTX_get_app_data(ssl); |
6fc6879b | 1535 | |
159a7fbd JB |
1536 | /* Replace X509 store if it is time to update CRL. */ |
1537 | if (data->crl_reload_interval > 0 && os_get_reltime(&now) == 0 && | |
1538 | os_reltime_expired(&now, &data->crl_last_reload, | |
1539 | data->crl_reload_interval)) { | |
1540 | wpa_printf(MSG_INFO, | |
1541 | "OpenSSL: Flushing X509 store with ca_cert file"); | |
1542 | new_cert_store = tls_crl_cert_reload(data->ca_cert, | |
1543 | data->check_crl); | |
1544 | if (!new_cert_store) { | |
1545 | wpa_printf(MSG_ERROR, | |
1546 | "OpenSSL: Error replacing X509 store with ca_cert file"); | |
1547 | } else { | |
1548 | /* Replace old store */ | |
1549 | SSL_CTX_set_cert_store(ssl, new_cert_store); | |
1550 | data->crl_last_reload = now; | |
1551 | } | |
1552 | } | |
1553 | ||
6a31a31d JM |
1554 | conn = os_zalloc(sizeof(*conn)); |
1555 | if (conn == NULL) | |
1556 | return NULL; | |
dd5d325b | 1557 | conn->data = data; |
bd9b8b2b | 1558 | conn->ssl_ctx = ssl; |
6a31a31d JM |
1559 | conn->ssl = SSL_new(ssl); |
1560 | if (conn->ssl == NULL) { | |
6fc6879b JM |
1561 | tls_show_errors(MSG_INFO, __func__, |
1562 | "Failed to initialize new SSL connection"); | |
6a31a31d JM |
1563 | os_free(conn); |
1564 | return NULL; | |
6fc6879b JM |
1565 | } |
1566 | ||
6a31a31d JM |
1567 | conn->context = context; |
1568 | SSL_set_app_data(conn->ssl, conn); | |
1569 | SSL_set_msg_callback(conn->ssl, tls_msg_cb); | |
1570 | SSL_set_msg_callback_arg(conn->ssl, conn); | |
fca25ef4 JM |
1571 | options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | |
1572 | SSL_OP_SINGLE_DH_USE; | |
1573 | #ifdef SSL_OP_NO_COMPRESSION | |
1574 | options |= SSL_OP_NO_COMPRESSION; | |
1575 | #endif /* SSL_OP_NO_COMPRESSION */ | |
6a31a31d | 1576 | SSL_set_options(conn->ssl, options); |
6fc6879b | 1577 | |
6a31a31d JM |
1578 | conn->ssl_in = BIO_new(BIO_s_mem()); |
1579 | if (!conn->ssl_in) { | |
6fc6879b JM |
1580 | tls_show_errors(MSG_INFO, __func__, |
1581 | "Failed to create a new BIO for ssl_in"); | |
6a31a31d JM |
1582 | SSL_free(conn->ssl); |
1583 | os_free(conn); | |
1584 | return NULL; | |
6fc6879b JM |
1585 | } |
1586 | ||
6a31a31d JM |
1587 | conn->ssl_out = BIO_new(BIO_s_mem()); |
1588 | if (!conn->ssl_out) { | |
6fc6879b JM |
1589 | tls_show_errors(MSG_INFO, __func__, |
1590 | "Failed to create a new BIO for ssl_out"); | |
1591 | SSL_free(conn->ssl); | |
6a31a31d | 1592 | BIO_free(conn->ssl_in); |
6fc6879b JM |
1593 | os_free(conn); |
1594 | return NULL; | |
1595 | } | |
1596 | ||
6a31a31d JM |
1597 | SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out); |
1598 | ||
6fc6879b JM |
1599 | return conn; |
1600 | } | |
1601 | ||
1602 | ||
1603 | void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn) | |
1604 | { | |
1605 | if (conn == NULL) | |
1606 | return; | |
acf36f31 JM |
1607 | if (conn->success_data) { |
1608 | /* | |
1609 | * Make sure ssl_clear_bad_session() does not remove this | |
1610 | * session. | |
1611 | */ | |
1612 | SSL_set_quiet_shutdown(conn->ssl, 1); | |
1613 | SSL_shutdown(conn->ssl); | |
1614 | } | |
6fc6879b JM |
1615 | SSL_free(conn->ssl); |
1616 | tls_engine_deinit(conn); | |
1617 | os_free(conn->subject_match); | |
1618 | os_free(conn->altsubject_match); | |
01f809c7 | 1619 | os_free(conn->suffix_match); |
cebee30f | 1620 | os_free(conn->domain_match); |
841205a1 | 1621 | os_free(conn->check_cert_subject); |
6fc6879b JM |
1622 | os_free(conn->session_ticket); |
1623 | os_free(conn); | |
1624 | } | |
1625 | ||
1626 | ||
1627 | int tls_connection_established(void *ssl_ctx, struct tls_connection *conn) | |
1628 | { | |
1629 | return conn ? SSL_is_init_finished(conn->ssl) : 0; | |
1630 | } | |
1631 | ||
1632 | ||
0ec3e77a JM |
1633 | char * tls_connection_peer_serial_num(void *tls_ctx, |
1634 | struct tls_connection *conn) | |
1635 | { | |
1636 | ASN1_INTEGER *ser; | |
1637 | char *serial_num; | |
1638 | size_t len; | |
1639 | ||
1640 | if (!conn->peer_cert) | |
1641 | return NULL; | |
1642 | ||
1643 | ser = X509_get_serialNumber(conn->peer_cert); | |
1644 | if (!ser) | |
1645 | return NULL; | |
1646 | ||
1647 | len = ASN1_STRING_length(ser) * 2 + 1; | |
1648 | serial_num = os_malloc(len); | |
1649 | if (!serial_num) | |
1650 | return NULL; | |
1651 | wpa_snprintf_hex_uppercase(serial_num, len, | |
1652 | ASN1_STRING_get0_data(ser), | |
1653 | ASN1_STRING_length(ser)); | |
1654 | return serial_num; | |
1655 | } | |
1656 | ||
1657 | ||
6fc6879b JM |
1658 | int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn) |
1659 | { | |
1660 | if (conn == NULL) | |
1661 | return -1; | |
1662 | ||
1663 | /* Shutdown previous TLS connection without notifying the peer | |
1664 | * because the connection was already terminated in practice | |
1665 | * and "close notify" shutdown alert would confuse AS. */ | |
1666 | SSL_set_quiet_shutdown(conn->ssl, 1); | |
1667 | SSL_shutdown(conn->ssl); | |
a7803b0c | 1668 | return SSL_clear(conn->ssl) == 1 ? 0 : -1; |
6fc6879b JM |
1669 | } |
1670 | ||
1671 | ||
1672 | static int tls_match_altsubject_component(X509 *cert, int type, | |
1673 | const char *value, size_t len) | |
1674 | { | |
1675 | GENERAL_NAME *gen; | |
1676 | void *ext; | |
a8572960 AL |
1677 | int found = 0; |
1678 | stack_index_t i; | |
6fc6879b JM |
1679 | |
1680 | ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL); | |
1681 | ||
1682 | for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) { | |
1683 | gen = sk_GENERAL_NAME_value(ext, i); | |
1684 | if (gen->type != type) | |
1685 | continue; | |
1686 | if (os_strlen((char *) gen->d.ia5->data) == len && | |
1687 | os_memcmp(value, gen->d.ia5->data, len) == 0) | |
1688 | found++; | |
1689 | } | |
1690 | ||
0f096370 JM |
1691 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
1692 | ||
6fc6879b JM |
1693 | return found; |
1694 | } | |
1695 | ||
1696 | ||
1697 | static int tls_match_altsubject(X509 *cert, const char *match) | |
1698 | { | |
1699 | int type; | |
1700 | const char *pos, *end; | |
1701 | size_t len; | |
1702 | ||
1703 | pos = match; | |
1704 | do { | |
1705 | if (os_strncmp(pos, "EMAIL:", 6) == 0) { | |
1706 | type = GEN_EMAIL; | |
1707 | pos += 6; | |
1708 | } else if (os_strncmp(pos, "DNS:", 4) == 0) { | |
1709 | type = GEN_DNS; | |
1710 | pos += 4; | |
1711 | } else if (os_strncmp(pos, "URI:", 4) == 0) { | |
1712 | type = GEN_URI; | |
1713 | pos += 4; | |
1714 | } else { | |
1715 | wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName " | |
1716 | "match '%s'", pos); | |
1717 | return 0; | |
1718 | } | |
1719 | end = os_strchr(pos, ';'); | |
1720 | while (end) { | |
1721 | if (os_strncmp(end + 1, "EMAIL:", 6) == 0 || | |
1722 | os_strncmp(end + 1, "DNS:", 4) == 0 || | |
1723 | os_strncmp(end + 1, "URI:", 4) == 0) | |
1724 | break; | |
1725 | end = os_strchr(end + 1, ';'); | |
1726 | } | |
1727 | if (end) | |
1728 | len = end - pos; | |
1729 | else | |
1730 | len = os_strlen(pos); | |
1731 | if (tls_match_altsubject_component(cert, type, pos, len) > 0) | |
1732 | return 1; | |
1733 | pos = end + 1; | |
1734 | } while (end); | |
1735 | ||
1736 | return 0; | |
1737 | } | |
1738 | ||
1739 | ||
461e3ebe | 1740 | #ifndef CONFIG_NATIVE_WINDOWS |
cebee30f | 1741 | static int domain_suffix_match(const u8 *val, size_t len, const char *match, |
242e8572 | 1742 | size_t match_len, int full) |
01f809c7 | 1743 | { |
242e8572 | 1744 | size_t i; |
01f809c7 JM |
1745 | |
1746 | /* Check for embedded nuls that could mess up suffix matching */ | |
1747 | for (i = 0; i < len; i++) { | |
1748 | if (val[i] == '\0') { | |
1749 | wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject"); | |
1750 | return 0; | |
1751 | } | |
1752 | } | |
1753 | ||
cebee30f | 1754 | if (match_len > len || (full && match_len != len)) |
01f809c7 JM |
1755 | return 0; |
1756 | ||
1757 | if (os_strncasecmp((const char *) val + len - match_len, match, | |
1758 | match_len) != 0) | |
1759 | return 0; /* no match */ | |
1760 | ||
1761 | if (match_len == len) | |
1762 | return 1; /* exact match */ | |
1763 | ||
1764 | if (val[len - match_len - 1] == '.') | |
1765 | return 1; /* full label match completes suffix match */ | |
1766 | ||
1767 | wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match"); | |
1768 | return 0; | |
1769 | } | |
461e3ebe | 1770 | #endif /* CONFIG_NATIVE_WINDOWS */ |
01f809c7 JM |
1771 | |
1772 | ||
841205a1 JB |
1773 | struct tls_dn_field_order_cnt { |
1774 | u8 cn; | |
1775 | u8 c; | |
1776 | u8 l; | |
1777 | u8 st; | |
1778 | u8 o; | |
1779 | u8 ou; | |
1780 | u8 email; | |
1781 | }; | |
1782 | ||
1783 | ||
1784 | static int get_dn_field_index(const struct tls_dn_field_order_cnt *dn_cnt, | |
1785 | int nid) | |
1786 | { | |
1787 | switch (nid) { | |
1788 | case NID_commonName: | |
1789 | return dn_cnt->cn; | |
1790 | case NID_countryName: | |
1791 | return dn_cnt->c; | |
1792 | case NID_localityName: | |
1793 | return dn_cnt->l; | |
1794 | case NID_stateOrProvinceName: | |
1795 | return dn_cnt->st; | |
1796 | case NID_organizationName: | |
1797 | return dn_cnt->o; | |
1798 | case NID_organizationalUnitName: | |
1799 | return dn_cnt->ou; | |
1800 | case NID_pkcs9_emailAddress: | |
1801 | return dn_cnt->email; | |
1802 | default: | |
1803 | wpa_printf(MSG_ERROR, | |
1804 | "TLS: Unknown NID '%d' in check_cert_subject", | |
1805 | nid); | |
1806 | return -1; | |
1807 | } | |
1808 | } | |
1809 | ||
1810 | ||
1811 | /** | |
1812 | * match_dn_field - Match configuration DN field against Certificate DN field | |
1813 | * @cert: Certificate | |
1814 | * @nid: NID of DN field | |
1815 | * @field: Field name | |
1816 | * @value DN field value which is passed from configuration | |
1817 | * e.g., if configuration have C=US and this argument will point to US. | |
1818 | * @dn_cnt: DN matching context | |
1819 | * Returns: 1 on success and 0 on failure | |
1820 | */ | |
1821 | static int match_dn_field(const X509 *cert, int nid, const char *field, | |
1822 | const char *value, | |
1823 | const struct tls_dn_field_order_cnt *dn_cnt) | |
1824 | { | |
1825 | int i, ret = 0, len, config_dn_field_index, match_index = 0; | |
1826 | X509_NAME *name; | |
1827 | ||
1828 | len = os_strlen(value); | |
c675397c | 1829 | name = X509_get_subject_name((X509 *) cert); |
841205a1 JB |
1830 | |
1831 | /* Assign incremented cnt for every field of DN to check DN field in | |
1832 | * right order */ | |
1833 | config_dn_field_index = get_dn_field_index(dn_cnt, nid); | |
1834 | if (config_dn_field_index < 0) | |
1835 | return 0; | |
1836 | ||
1837 | /* Fetch value based on NID */ | |
1838 | for (i = -1; (i = X509_NAME_get_index_by_NID(name, nid, i)) > -1;) { | |
1839 | X509_NAME_ENTRY *e; | |
1840 | ASN1_STRING *cn; | |
1841 | ||
1842 | e = X509_NAME_get_entry(name, i); | |
1843 | if (!e) | |
1844 | continue; | |
1845 | ||
1846 | cn = X509_NAME_ENTRY_get_data(e); | |
1847 | if (!cn) | |
1848 | continue; | |
1849 | ||
1850 | match_index++; | |
1851 | ||
1852 | /* check for more than one DN field with same name */ | |
1853 | if (match_index != config_dn_field_index) | |
1854 | continue; | |
1855 | ||
1856 | /* Check wildcard at the right end side */ | |
1857 | /* E.g., if OU=develop* mentioned in configuration, allow 'OU' | |
1858 | * of the subject in the client certificate to start with | |
1859 | * 'develop' */ | |
1860 | if (len > 0 && value[len - 1] == '*') { | |
1861 | /* Compare actual certificate DN field value with | |
1862 | * configuration DN field value up to the specified | |
1863 | * length. */ | |
1864 | ret = ASN1_STRING_length(cn) >= len - 1 && | |
1865 | os_memcmp(ASN1_STRING_get0_data(cn), value, | |
1866 | len - 1) == 0; | |
1867 | } else { | |
1868 | /* Compare actual certificate DN field value with | |
1869 | * configuration DN field value */ | |
1870 | ret = ASN1_STRING_length(cn) == len && | |
1871 | os_memcmp(ASN1_STRING_get0_data(cn), value, | |
1872 | len) == 0; | |
1873 | } | |
1874 | if (!ret) { | |
1875 | wpa_printf(MSG_ERROR, | |
1876 | "OpenSSL: Failed to match %s '%s' with certificate DN field value '%s'", | |
1877 | field, value, ASN1_STRING_get0_data(cn)); | |
1878 | } | |
1879 | break; | |
1880 | } | |
1881 | ||
1882 | return ret; | |
1883 | } | |
1884 | ||
1885 | ||
1886 | /** | |
1887 | * get_value_from_field - Get value from DN field | |
1888 | * @cert: Certificate | |
1889 | * @field_str: DN field string which is passed from configuration file (e.g., | |
1890 | * C=US) | |
1891 | * @dn_cnt: DN matching context | |
1892 | * Returns: 1 on success and 0 on failure | |
1893 | */ | |
1894 | static int get_value_from_field(const X509 *cert, char *field_str, | |
1895 | struct tls_dn_field_order_cnt *dn_cnt) | |
1896 | { | |
1897 | int nid; | |
1898 | char *context = NULL, *name, *value; | |
1899 | ||
1900 | if (os_strcmp(field_str, "*") == 0) | |
1901 | return 1; /* wildcard matches everything */ | |
1902 | ||
1903 | name = str_token(field_str, "=", &context); | |
1904 | if (!name) | |
1905 | return 0; | |
1906 | ||
1907 | /* Compare all configured DN fields and assign nid based on that to | |
1908 | * fetch correct value from certificate subject */ | |
1909 | if (os_strcmp(name, "CN") == 0) { | |
1910 | nid = NID_commonName; | |
1911 | dn_cnt->cn++; | |
1912 | } else if(os_strcmp(name, "C") == 0) { | |
1913 | nid = NID_countryName; | |
1914 | dn_cnt->c++; | |
1915 | } else if (os_strcmp(name, "L") == 0) { | |
1916 | nid = NID_localityName; | |
1917 | dn_cnt->l++; | |
1918 | } else if (os_strcmp(name, "ST") == 0) { | |
1919 | nid = NID_stateOrProvinceName; | |
1920 | dn_cnt->st++; | |
1921 | } else if (os_strcmp(name, "O") == 0) { | |
1922 | nid = NID_organizationName; | |
1923 | dn_cnt->o++; | |
1924 | } else if (os_strcmp(name, "OU") == 0) { | |
1925 | nid = NID_organizationalUnitName; | |
1926 | dn_cnt->ou++; | |
1927 | } else if (os_strcmp(name, "emailAddress") == 0) { | |
1928 | nid = NID_pkcs9_emailAddress; | |
1929 | dn_cnt->email++; | |
1930 | } else { | |
1931 | wpa_printf(MSG_ERROR, | |
1932 | "TLS: Unknown field '%s' in check_cert_subject", name); | |
1933 | return 0; | |
1934 | } | |
1935 | ||
1936 | value = str_token(field_str, "=", &context); | |
1937 | if (!value) { | |
1938 | wpa_printf(MSG_ERROR, | |
1939 | "TLS: Distinguished Name field '%s' value is not defined in check_cert_subject", | |
1940 | name); | |
1941 | return 0; | |
1942 | } | |
1943 | ||
1944 | return match_dn_field(cert, nid, name, value, dn_cnt); | |
1945 | } | |
1946 | ||
1947 | ||
1948 | /** | |
1949 | * tls_match_dn_field - Match subject DN field with check_cert_subject | |
1950 | * @cert: Certificate | |
1951 | * @match: check_cert_subject string | |
1952 | * Returns: Return 1 on success and 0 on failure | |
1953 | */ | |
1954 | static int tls_match_dn_field(X509 *cert, const char *match) | |
1955 | { | |
1956 | const char *token, *last = NULL; | |
1957 | char field[256]; | |
1958 | struct tls_dn_field_order_cnt dn_cnt; | |
1959 | ||
1960 | os_memset(&dn_cnt, 0, sizeof(dn_cnt)); | |
1961 | ||
1962 | /* Maximum length of each DN field is 255 characters */ | |
1963 | ||
1964 | /* Process each '/' delimited field */ | |
1965 | while ((token = cstr_token(match, "/", &last))) { | |
1966 | if (last - token >= (int) sizeof(field)) { | |
1967 | wpa_printf(MSG_ERROR, | |
1968 | "OpenSSL: Too long DN matching field value in '%s'", | |
1969 | match); | |
1970 | return 0; | |
1971 | } | |
1972 | os_memcpy(field, token, last - token); | |
1973 | field[last - token] = '\0'; | |
1974 | ||
1975 | if (!get_value_from_field(cert, field, &dn_cnt)) { | |
1976 | wpa_printf(MSG_DEBUG, "OpenSSL: No match for DN '%s'", | |
1977 | field); | |
1978 | return 0; | |
1979 | } | |
1980 | } | |
1981 | ||
1982 | return 1; | |
1983 | } | |
1984 | ||
1985 | ||
242e8572 JM |
1986 | #ifndef CONFIG_NATIVE_WINDOWS |
1987 | static int tls_match_suffix_helper(X509 *cert, const char *match, | |
1988 | size_t match_len, int full) | |
01f809c7 JM |
1989 | { |
1990 | GENERAL_NAME *gen; | |
1991 | void *ext; | |
1992 | int i; | |
98a1571d | 1993 | stack_index_t j; |
01f809c7 JM |
1994 | int dns_name = 0; |
1995 | X509_NAME *name; | |
1996 | ||
cebee30f JM |
1997 | wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s", |
1998 | full ? "": "suffix ", match); | |
01f809c7 JM |
1999 | |
2000 | ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL); | |
2001 | ||
98a1571d JM |
2002 | for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) { |
2003 | gen = sk_GENERAL_NAME_value(ext, j); | |
01f809c7 JM |
2004 | if (gen->type != GEN_DNS) |
2005 | continue; | |
2006 | dns_name++; | |
2007 | wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName", | |
2008 | gen->d.dNSName->data, | |
2009 | gen->d.dNSName->length); | |
2010 | if (domain_suffix_match(gen->d.dNSName->data, | |
242e8572 JM |
2011 | gen->d.dNSName->length, |
2012 | match, match_len, full) == 1) { | |
cebee30f JM |
2013 | wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found", |
2014 | full ? "Match" : "Suffix match"); | |
0f096370 | 2015 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
01f809c7 JM |
2016 | return 1; |
2017 | } | |
2018 | } | |
0f096370 | 2019 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
01f809c7 JM |
2020 | |
2021 | if (dns_name) { | |
2022 | wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched"); | |
2023 | return 0; | |
2024 | } | |
2025 | ||
2026 | name = X509_get_subject_name(cert); | |
2027 | i = -1; | |
2028 | for (;;) { | |
2029 | X509_NAME_ENTRY *e; | |
2030 | ASN1_STRING *cn; | |
2031 | ||
2032 | i = X509_NAME_get_index_by_NID(name, NID_commonName, i); | |
2033 | if (i == -1) | |
2034 | break; | |
2035 | e = X509_NAME_get_entry(name, i); | |
2036 | if (e == NULL) | |
2037 | continue; | |
2038 | cn = X509_NAME_ENTRY_get_data(e); | |
2039 | if (cn == NULL) | |
2040 | continue; | |
2041 | wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName", | |
2042 | cn->data, cn->length); | |
242e8572 JM |
2043 | if (domain_suffix_match(cn->data, cn->length, |
2044 | match, match_len, full) == 1) { | |
cebee30f JM |
2045 | wpa_printf(MSG_DEBUG, "TLS: %s in commonName found", |
2046 | full ? "Match" : "Suffix match"); | |
01f809c7 JM |
2047 | return 1; |
2048 | } | |
2049 | } | |
2050 | ||
cebee30f JM |
2051 | wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found", |
2052 | full ? "": "suffix "); | |
01f809c7 | 2053 | return 0; |
242e8572 JM |
2054 | } |
2055 | #endif /* CONFIG_NATIVE_WINDOWS */ | |
2056 | ||
2057 | ||
2058 | static int tls_match_suffix(X509 *cert, const char *match, int full) | |
2059 | { | |
2060 | #ifdef CONFIG_NATIVE_WINDOWS | |
2061 | /* wincrypt.h has conflicting X509_NAME definition */ | |
2062 | return -1; | |
2063 | #else /* CONFIG_NATIVE_WINDOWS */ | |
2064 | const char *token, *last = NULL; | |
2065 | ||
2066 | /* Process each match alternative separately until a match is found */ | |
2067 | while ((token = cstr_token(match, ";", &last))) { | |
2068 | if (tls_match_suffix_helper(cert, token, last - token, full)) | |
2069 | return 1; | |
2070 | } | |
2071 | ||
2072 | return 0; | |
461e3ebe | 2073 | #endif /* CONFIG_NATIVE_WINDOWS */ |
01f809c7 JM |
2074 | } |
2075 | ||
2076 | ||
00468b46 JM |
2077 | static enum tls_fail_reason openssl_tls_fail_reason(int err) |
2078 | { | |
2079 | switch (err) { | |
2080 | case X509_V_ERR_CERT_REVOKED: | |
2081 | return TLS_FAIL_REVOKED; | |
2082 | case X509_V_ERR_CERT_NOT_YET_VALID: | |
2083 | case X509_V_ERR_CRL_NOT_YET_VALID: | |
2084 | return TLS_FAIL_NOT_YET_VALID; | |
2085 | case X509_V_ERR_CERT_HAS_EXPIRED: | |
2086 | case X509_V_ERR_CRL_HAS_EXPIRED: | |
2087 | return TLS_FAIL_EXPIRED; | |
2088 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
2089 | case X509_V_ERR_UNABLE_TO_GET_CRL: | |
2090 | case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: | |
2091 | case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: | |
2092 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: | |
2093 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: | |
2094 | case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: | |
2095 | case X509_V_ERR_CERT_CHAIN_TOO_LONG: | |
2096 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: | |
2097 | case X509_V_ERR_INVALID_CA: | |
2098 | return TLS_FAIL_UNTRUSTED; | |
2099 | case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: | |
2100 | case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: | |
2101 | case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: | |
2102 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
2103 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
2104 | case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: | |
2105 | case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: | |
2106 | case X509_V_ERR_CERT_UNTRUSTED: | |
2107 | case X509_V_ERR_CERT_REJECTED: | |
2108 | return TLS_FAIL_BAD_CERTIFICATE; | |
2109 | default: | |
2110 | return TLS_FAIL_UNSPECIFIED; | |
2111 | } | |
2112 | } | |
2113 | ||
2114 | ||
2115 | static struct wpabuf * get_x509_cert(X509 *cert) | |
2116 | { | |
2117 | struct wpabuf *buf; | |
2118 | u8 *tmp; | |
2119 | ||
2120 | int cert_len = i2d_X509(cert, NULL); | |
2121 | if (cert_len <= 0) | |
2122 | return NULL; | |
2123 | ||
2124 | buf = wpabuf_alloc(cert_len); | |
2125 | if (buf == NULL) | |
2126 | return NULL; | |
2127 | ||
2128 | tmp = wpabuf_put(buf, cert_len); | |
2129 | i2d_X509(cert, &tmp); | |
2130 | return buf; | |
2131 | } | |
2132 | ||
2133 | ||
2134 | static void openssl_tls_fail_event(struct tls_connection *conn, | |
2135 | X509 *err_cert, int err, int depth, | |
2136 | const char *subject, const char *err_str, | |
2137 | enum tls_fail_reason reason) | |
2138 | { | |
2139 | union tls_event_data ev; | |
2140 | struct wpabuf *cert = NULL; | |
7c0e1e27 | 2141 | struct tls_context *context = conn->context; |
00468b46 | 2142 | |
7c0e1e27 | 2143 | if (context->event_cb == NULL) |
00468b46 JM |
2144 | return; |
2145 | ||
2146 | cert = get_x509_cert(err_cert); | |
2147 | os_memset(&ev, 0, sizeof(ev)); | |
2148 | ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ? | |
2149 | reason : openssl_tls_fail_reason(err); | |
2150 | ev.cert_fail.depth = depth; | |
2151 | ev.cert_fail.subject = subject; | |
2152 | ev.cert_fail.reason_txt = err_str; | |
2153 | ev.cert_fail.cert = cert; | |
7c0e1e27 | 2154 | context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev); |
00468b46 JM |
2155 | wpabuf_free(cert); |
2156 | } | |
2157 | ||
2158 | ||
21f1a1e6 JM |
2159 | static int openssl_cert_tod(X509 *cert) |
2160 | { | |
2161 | CERTIFICATEPOLICIES *ext; | |
2162 | stack_index_t i; | |
2163 | char buf[100]; | |
2164 | int res; | |
2165 | int tod = 0; | |
2166 | ||
2167 | ext = X509_get_ext_d2i(cert, NID_certificate_policies, NULL, NULL); | |
2168 | if (!ext) | |
2169 | return 0; | |
2170 | ||
2171 | for (i = 0; i < sk_POLICYINFO_num(ext); i++) { | |
2172 | POLICYINFO *policy; | |
2173 | ||
2174 | policy = sk_POLICYINFO_value(ext, i); | |
2175 | res = OBJ_obj2txt(buf, sizeof(buf), policy->policyid, 0); | |
2176 | if (res < 0 || (size_t) res >= sizeof(buf)) | |
2177 | continue; | |
2178 | wpa_printf(MSG_DEBUG, "OpenSSL: Certificate Policy %s", buf); | |
2179 | if (os_strcmp(buf, "1.3.6.1.4.1.40808.1.3.1") == 0) | |
2180 | tod = 1; | |
2181 | } | |
2182 | ||
2183 | return tod; | |
2184 | } | |
2185 | ||
2186 | ||
00468b46 JM |
2187 | static void openssl_tls_cert_event(struct tls_connection *conn, |
2188 | X509 *err_cert, int depth, | |
2189 | const char *subject) | |
2190 | { | |
2191 | struct wpabuf *cert = NULL; | |
2192 | union tls_event_data ev; | |
7c0e1e27 | 2193 | struct tls_context *context = conn->context; |
d07d3fbd JM |
2194 | char *altsubject[TLS_MAX_ALT_SUBJECT]; |
2195 | int alt, num_altsubject = 0; | |
2196 | GENERAL_NAME *gen; | |
2197 | void *ext; | |
2198 | stack_index_t i; | |
2ff952a5 JM |
2199 | ASN1_INTEGER *ser; |
2200 | char serial_num[128]; | |
00468b46 JM |
2201 | #ifdef CONFIG_SHA256 |
2202 | u8 hash[32]; | |
2203 | #endif /* CONFIG_SHA256 */ | |
2204 | ||
7c0e1e27 | 2205 | if (context->event_cb == NULL) |
00468b46 JM |
2206 | return; |
2207 | ||
2208 | os_memset(&ev, 0, sizeof(ev)); | |
3c108b75 JM |
2209 | if (conn->cert_probe || (conn->flags & TLS_CONN_EXT_CERT_CHECK) || |
2210 | context->cert_in_cb) { | |
00468b46 JM |
2211 | cert = get_x509_cert(err_cert); |
2212 | ev.peer_cert.cert = cert; | |
2213 | } | |
2214 | #ifdef CONFIG_SHA256 | |
2215 | if (cert) { | |
2216 | const u8 *addr[1]; | |
2217 | size_t len[1]; | |
2218 | addr[0] = wpabuf_head(cert); | |
2219 | len[0] = wpabuf_len(cert); | |
2220 | if (sha256_vector(1, addr, len, hash) == 0) { | |
2221 | ev.peer_cert.hash = hash; | |
2222 | ev.peer_cert.hash_len = sizeof(hash); | |
2223 | } | |
2224 | } | |
2225 | #endif /* CONFIG_SHA256 */ | |
2226 | ev.peer_cert.depth = depth; | |
2227 | ev.peer_cert.subject = subject; | |
d07d3fbd | 2228 | |
2ff952a5 JM |
2229 | ser = X509_get_serialNumber(err_cert); |
2230 | if (ser) { | |
2231 | wpa_snprintf_hex_uppercase(serial_num, sizeof(serial_num), | |
2232 | ASN1_STRING_get0_data(ser), | |
2233 | ASN1_STRING_length(ser)); | |
2234 | ev.peer_cert.serial_num = serial_num; | |
2235 | } | |
2236 | ||
d07d3fbd JM |
2237 | ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL); |
2238 | for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) { | |
2239 | char *pos; | |
2240 | ||
2241 | if (num_altsubject == TLS_MAX_ALT_SUBJECT) | |
2242 | break; | |
2243 | gen = sk_GENERAL_NAME_value(ext, i); | |
2244 | if (gen->type != GEN_EMAIL && | |
2245 | gen->type != GEN_DNS && | |
2246 | gen->type != GEN_URI) | |
2247 | continue; | |
2248 | ||
2249 | pos = os_malloc(10 + gen->d.ia5->length + 1); | |
2250 | if (pos == NULL) | |
2251 | break; | |
2252 | altsubject[num_altsubject++] = pos; | |
2253 | ||
2254 | switch (gen->type) { | |
2255 | case GEN_EMAIL: | |
2256 | os_memcpy(pos, "EMAIL:", 6); | |
2257 | pos += 6; | |
2258 | break; | |
2259 | case GEN_DNS: | |
2260 | os_memcpy(pos, "DNS:", 4); | |
2261 | pos += 4; | |
2262 | break; | |
2263 | case GEN_URI: | |
2264 | os_memcpy(pos, "URI:", 4); | |
2265 | pos += 4; | |
2266 | break; | |
2267 | } | |
2268 | ||
2269 | os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length); | |
2270 | pos += gen->d.ia5->length; | |
2271 | *pos = '\0'; | |
2272 | } | |
0f096370 | 2273 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
d07d3fbd JM |
2274 | |
2275 | for (alt = 0; alt < num_altsubject; alt++) | |
2276 | ev.peer_cert.altsubject[alt] = altsubject[alt]; | |
2277 | ev.peer_cert.num_altsubject = num_altsubject; | |
2278 | ||
21f1a1e6 JM |
2279 | ev.peer_cert.tod = openssl_cert_tod(err_cert); |
2280 | ||
7c0e1e27 | 2281 | context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev); |
00468b46 | 2282 | wpabuf_free(cert); |
d07d3fbd JM |
2283 | for (alt = 0; alt < num_altsubject; alt++) |
2284 | os_free(altsubject[alt]); | |
00468b46 JM |
2285 | } |
2286 | ||
2287 | ||
6fc6879b JM |
2288 | static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx) |
2289 | { | |
2290 | char buf[256]; | |
2291 | X509 *err_cert; | |
2292 | int err, depth; | |
2293 | SSL *ssl; | |
2294 | struct tls_connection *conn; | |
7c0e1e27 | 2295 | struct tls_context *context; |
cebee30f | 2296 | char *match, *altmatch, *suffix_match, *domain_match; |
841205a1 | 2297 | const char *check_cert_subject; |
00468b46 | 2298 | const char *err_str; |
6fc6879b JM |
2299 | |
2300 | err_cert = X509_STORE_CTX_get_current_cert(x509_ctx); | |
97efe70b EL |
2301 | if (!err_cert) |
2302 | return 0; | |
2303 | ||
6fc6879b JM |
2304 | err = X509_STORE_CTX_get_error(x509_ctx); |
2305 | depth = X509_STORE_CTX_get_error_depth(x509_ctx); | |
2306 | ssl = X509_STORE_CTX_get_ex_data(x509_ctx, | |
2307 | SSL_get_ex_data_X509_STORE_CTX_idx()); | |
2308 | X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf)); | |
2309 | ||
2310 | conn = SSL_get_app_data(ssl); | |
0bdaa741 JM |
2311 | if (conn == NULL) |
2312 | return 0; | |
080585c0 JM |
2313 | |
2314 | if (depth == 0) | |
2315 | conn->peer_cert = err_cert; | |
2316 | else if (depth == 1) | |
2317 | conn->peer_issuer = err_cert; | |
6bf61fb2 JM |
2318 | else if (depth == 2) |
2319 | conn->peer_issuer_issuer = err_cert; | |
080585c0 | 2320 | |
7c0e1e27 | 2321 | context = conn->context; |
0bdaa741 JM |
2322 | match = conn->subject_match; |
2323 | altmatch = conn->altsubject_match; | |
01f809c7 | 2324 | suffix_match = conn->suffix_match; |
cebee30f | 2325 | domain_match = conn->domain_match; |
6fc6879b | 2326 | |
00468b46 JM |
2327 | if (!preverify_ok && !conn->ca_cert_verify) |
2328 | preverify_ok = 1; | |
2329 | if (!preverify_ok && depth > 0 && conn->server_cert_only) | |
2330 | preverify_ok = 1; | |
235279e7 JM |
2331 | if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) && |
2332 | (err == X509_V_ERR_CERT_HAS_EXPIRED || | |
2333 | err == X509_V_ERR_CERT_NOT_YET_VALID)) { | |
2334 | wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity " | |
2335 | "time mismatch"); | |
2336 | preverify_ok = 1; | |
2337 | } | |
dd5d325b SV |
2338 | if (!preverify_ok && !conn->data->check_crl_strict && |
2339 | (err == X509_V_ERR_CRL_HAS_EXPIRED || | |
2340 | err == X509_V_ERR_CRL_NOT_YET_VALID)) { | |
2341 | wpa_printf(MSG_DEBUG, | |
2342 | "OpenSSL: Ignore certificate validity CRL time mismatch"); | |
2343 | preverify_ok = 1; | |
2344 | } | |
00468b46 JM |
2345 | |
2346 | err_str = X509_verify_cert_error_string(err); | |
2347 | ||
2348 | #ifdef CONFIG_SHA256 | |
00033a09 RA |
2349 | /* |
2350 | * Do not require preverify_ok so we can explicity allow otherwise | |
2351 | * invalid pinned server certificates. | |
2352 | */ | |
2353 | if (depth == 0 && conn->server_cert_only) { | |
00468b46 JM |
2354 | struct wpabuf *cert; |
2355 | cert = get_x509_cert(err_cert); | |
2356 | if (!cert) { | |
2357 | wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch " | |
2358 | "server certificate data"); | |
6fc6879b | 2359 | preverify_ok = 0; |
00468b46 JM |
2360 | } else { |
2361 | u8 hash[32]; | |
2362 | const u8 *addr[1]; | |
2363 | size_t len[1]; | |
2364 | addr[0] = wpabuf_head(cert); | |
2365 | len[0] = wpabuf_len(cert); | |
2366 | if (sha256_vector(1, addr, len, hash) < 0 || | |
2367 | os_memcmp(conn->srv_cert_hash, hash, 32) != 0) { | |
2368 | err_str = "Server certificate mismatch"; | |
2369 | err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN; | |
2370 | preverify_ok = 0; | |
00033a09 RA |
2371 | } else if (!preverify_ok) { |
2372 | /* | |
2373 | * Certificate matches pinned certificate, allow | |
2374 | * regardless of other problems. | |
2375 | */ | |
2376 | wpa_printf(MSG_DEBUG, | |
2377 | "OpenSSL: Ignore validation issues for a pinned server certificate"); | |
2378 | preverify_ok = 1; | |
00468b46 JM |
2379 | } |
2380 | wpabuf_free(cert); | |
6fc6879b JM |
2381 | } |
2382 | } | |
00468b46 JM |
2383 | #endif /* CONFIG_SHA256 */ |
2384 | ||
3539738c JM |
2385 | openssl_tls_cert_event(conn, err_cert, depth, buf); |
2386 | ||
00468b46 | 2387 | if (!preverify_ok) { |
84db90e4 JM |
2388 | if (depth > 0) { |
2389 | /* Send cert event for the peer certificate so that | |
2390 | * the upper layers get information about it even if | |
2391 | * validation of a CA certificate fails. */ | |
2392 | STACK_OF(X509) *chain; | |
2393 | ||
2394 | chain = X509_STORE_CTX_get1_chain(x509_ctx); | |
2395 | if (chain && sk_X509_num(chain) > 0) { | |
2396 | char buf2[256]; | |
2397 | X509 *cert; | |
2398 | ||
2399 | cert = sk_X509_value(chain, 0); | |
2400 | X509_NAME_oneline(X509_get_subject_name(cert), | |
2401 | buf2, sizeof(buf2)); | |
2402 | ||
2403 | openssl_tls_cert_event(conn, cert, 0, buf2); | |
2404 | } | |
2405 | if (chain) | |
2406 | sk_X509_pop_free(chain, X509_free); | |
2407 | } | |
2408 | ||
00468b46 JM |
2409 | wpa_printf(MSG_WARNING, "TLS: Certificate verification failed," |
2410 | " error %d (%s) depth %d for '%s'", err, err_str, | |
2411 | depth, buf); | |
2412 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2413 | err_str, TLS_FAIL_UNSPECIFIED); | |
2414 | return preverify_ok; | |
2415 | } | |
2416 | ||
2417 | wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d " | |
2418 | "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'", | |
2419 | preverify_ok, err, err_str, | |
2420 | conn->ca_cert_verify, depth, buf); | |
841205a1 JB |
2421 | check_cert_subject = conn->check_cert_subject; |
2422 | if (!check_cert_subject) | |
2423 | check_cert_subject = conn->data->check_cert_subject; | |
2424 | if (check_cert_subject) { | |
2425 | if (depth == 0 && | |
2426 | !tls_match_dn_field(err_cert, check_cert_subject)) { | |
2427 | preverify_ok = 0; | |
2428 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2429 | "Distinguished Name", | |
2430 | TLS_FAIL_DN_MISMATCH); | |
2431 | } | |
2432 | } | |
00468b46 JM |
2433 | if (depth == 0 && match && os_strstr(buf, match) == NULL) { |
2434 | wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not " | |
2435 | "match with '%s'", buf, match); | |
2436 | preverify_ok = 0; | |
2437 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2438 | "Subject mismatch", | |
2439 | TLS_FAIL_SUBJECT_MISMATCH); | |
2440 | } else if (depth == 0 && altmatch && | |
2441 | !tls_match_altsubject(err_cert, altmatch)) { | |
2442 | wpa_printf(MSG_WARNING, "TLS: altSubjectName match " | |
2443 | "'%s' not found", altmatch); | |
2444 | preverify_ok = 0; | |
2445 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2446 | "AltSubject mismatch", | |
2447 | TLS_FAIL_ALTSUBJECT_MISMATCH); | |
01f809c7 | 2448 | } else if (depth == 0 && suffix_match && |
cebee30f | 2449 | !tls_match_suffix(err_cert, suffix_match, 0)) { |
01f809c7 JM |
2450 | wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found", |
2451 | suffix_match); | |
2452 | preverify_ok = 0; | |
2453 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2454 | "Domain suffix mismatch", | |
2455 | TLS_FAIL_DOMAIN_SUFFIX_MISMATCH); | |
cebee30f JM |
2456 | } else if (depth == 0 && domain_match && |
2457 | !tls_match_suffix(err_cert, domain_match, 1)) { | |
2458 | wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found", | |
2459 | domain_match); | |
2460 | preverify_ok = 0; | |
2461 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2462 | "Domain mismatch", | |
2463 | TLS_FAIL_DOMAIN_MISMATCH); | |
3539738c | 2464 | } |
00468b46 JM |
2465 | |
2466 | if (conn->cert_probe && preverify_ok && depth == 0) { | |
2467 | wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate " | |
2468 | "on probe-only run"); | |
2469 | preverify_ok = 0; | |
2470 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2471 | "Server certificate chain probe", | |
2472 | TLS_FAIL_SERVER_CHAIN_PROBE); | |
2473 | } | |
6fc6879b | 2474 | |
4eb8cfe0 JM |
2475 | #ifdef CONFIG_SUITEB |
2476 | if (conn->flags & TLS_CONN_SUITEB) { | |
2477 | EVP_PKEY *pk; | |
2478 | RSA *rsa; | |
2479 | int len = -1; | |
2480 | ||
2481 | pk = X509_get_pubkey(err_cert); | |
2482 | if (pk) { | |
2483 | rsa = EVP_PKEY_get1_RSA(pk); | |
2484 | if (rsa) { | |
2485 | len = RSA_bits(rsa); | |
2486 | RSA_free(rsa); | |
2487 | } | |
2488 | EVP_PKEY_free(pk); | |
2489 | } | |
2490 | ||
2491 | if (len >= 0) { | |
2492 | wpa_printf(MSG_DEBUG, | |
2493 | "OpenSSL: RSA modulus size: %d bits", len); | |
2494 | if (len < 3072) { | |
2495 | preverify_ok = 0; | |
2496 | openssl_tls_fail_event( | |
2497 | conn, err_cert, err, | |
2498 | depth, buf, | |
2499 | "Insufficient RSA modulus size", | |
2500 | TLS_FAIL_INSUFFICIENT_KEY_LEN); | |
2501 | } | |
2502 | } | |
2503 | } | |
2504 | #endif /* CONFIG_SUITEB */ | |
2505 | ||
bdee6ca0 | 2506 | #ifdef OPENSSL_IS_BORINGSSL |
213e158c JM |
2507 | if (depth == 0 && (conn->flags & TLS_CONN_REQUEST_OCSP) && |
2508 | preverify_ok) { | |
bdee6ca0 JM |
2509 | enum ocsp_result res; |
2510 | ||
213e158c JM |
2511 | res = check_ocsp_resp(conn->ssl_ctx, conn->ssl, err_cert, |
2512 | conn->peer_issuer, | |
2513 | conn->peer_issuer_issuer); | |
bdee6ca0 JM |
2514 | if (res == OCSP_REVOKED) { |
2515 | preverify_ok = 0; | |
2516 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2517 | "certificate revoked", | |
2518 | TLS_FAIL_REVOKED); | |
2519 | if (err == X509_V_OK) | |
2520 | X509_STORE_CTX_set_error( | |
2521 | x509_ctx, X509_V_ERR_CERT_REVOKED); | |
2522 | } else if (res != OCSP_GOOD && | |
2523 | (conn->flags & TLS_CONN_REQUIRE_OCSP)) { | |
2524 | preverify_ok = 0; | |
2525 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
2526 | "bad certificate status response", | |
2527 | TLS_FAIL_UNSPECIFIED); | |
2528 | } | |
2529 | } | |
2530 | #endif /* OPENSSL_IS_BORINGSSL */ | |
2531 | ||
3c108b75 | 2532 | if (depth == 0 && preverify_ok && context->event_cb != NULL) |
7c0e1e27 PS |
2533 | context->event_cb(context->cb_ctx, |
2534 | TLS_CERT_CHAIN_SUCCESS, NULL); | |
dd7fec1f | 2535 | |
6fc6879b JM |
2536 | return preverify_ok; |
2537 | } | |
2538 | ||
2539 | ||
2540 | #ifndef OPENSSL_NO_STDIO | |
bd9b8b2b | 2541 | static int tls_load_ca_der(struct tls_data *data, const char *ca_cert) |
6fc6879b | 2542 | { |
bd9b8b2b | 2543 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
2544 | X509_LOOKUP *lookup; |
2545 | int ret = 0; | |
2546 | ||
68ae4773 | 2547 | lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx), |
6fc6879b JM |
2548 | X509_LOOKUP_file()); |
2549 | if (lookup == NULL) { | |
2550 | tls_show_errors(MSG_WARNING, __func__, | |
2551 | "Failed add lookup for X509 store"); | |
2552 | return -1; | |
2553 | } | |
2554 | ||
2555 | if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) { | |
2556 | unsigned long err = ERR_peek_error(); | |
2557 | tls_show_errors(MSG_WARNING, __func__, | |
2558 | "Failed load CA in DER format"); | |
2559 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
2560 | ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
2561 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring " | |
2562 | "cert already in hash table error", | |
2563 | __func__); | |
2564 | } else | |
2565 | ret = -1; | |
2566 | } | |
2567 | ||
2568 | return ret; | |
2569 | } | |
2570 | #endif /* OPENSSL_NO_STDIO */ | |
2571 | ||
2572 | ||
bd9b8b2b JM |
2573 | static int tls_connection_ca_cert(struct tls_data *data, |
2574 | struct tls_connection *conn, | |
6fc6879b JM |
2575 | const char *ca_cert, const u8 *ca_cert_blob, |
2576 | size_t ca_cert_blob_len, const char *ca_path) | |
2577 | { | |
bd9b8b2b | 2578 | SSL_CTX *ssl_ctx = data->ssl; |
68ae4773 | 2579 | X509_STORE *store; |
6fc6879b JM |
2580 | |
2581 | /* | |
2582 | * Remove previously configured trusted CA certificates before adding | |
2583 | * new ones. | |
2584 | */ | |
68ae4773 JM |
2585 | store = X509_STORE_new(); |
2586 | if (store == NULL) { | |
6fc6879b JM |
2587 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new " |
2588 | "certificate store", __func__); | |
2589 | return -1; | |
2590 | } | |
68ae4773 | 2591 | SSL_CTX_set_cert_store(ssl_ctx, store); |
6fc6879b | 2592 | |
00468b46 JM |
2593 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); |
2594 | conn->ca_cert_verify = 1; | |
2595 | ||
2596 | if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) { | |
2597 | wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate " | |
2598 | "chain"); | |
2599 | conn->cert_probe = 1; | |
2600 | conn->ca_cert_verify = 0; | |
2601 | return 0; | |
2602 | } | |
2603 | ||
2604 | if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) { | |
2605 | #ifdef CONFIG_SHA256 | |
2606 | const char *pos = ca_cert + 7; | |
2607 | if (os_strncmp(pos, "server/sha256/", 14) != 0) { | |
2608 | wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert " | |
2609 | "hash value '%s'", ca_cert); | |
2610 | return -1; | |
2611 | } | |
2612 | pos += 14; | |
2613 | if (os_strlen(pos) != 32 * 2) { | |
2614 | wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 " | |
2615 | "hash length in ca_cert '%s'", ca_cert); | |
2616 | return -1; | |
2617 | } | |
2618 | if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) { | |
2619 | wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash " | |
2620 | "value in ca_cert '%s'", ca_cert); | |
2621 | return -1; | |
2622 | } | |
2623 | conn->server_cert_only = 1; | |
2624 | wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server " | |
2625 | "certificate match"); | |
2626 | return 0; | |
2627 | #else /* CONFIG_SHA256 */ | |
2628 | wpa_printf(MSG_INFO, "No SHA256 included in the build - " | |
2629 | "cannot validate server certificate hash"); | |
2630 | return -1; | |
2631 | #endif /* CONFIG_SHA256 */ | |
2632 | } | |
2633 | ||
6fc6879b | 2634 | if (ca_cert_blob) { |
fee31f76 JM |
2635 | X509 *cert = d2i_X509(NULL, |
2636 | (const unsigned char **) &ca_cert_blob, | |
6fc6879b JM |
2637 | ca_cert_blob_len); |
2638 | if (cert == NULL) { | |
8ba809f6 SL |
2639 | BIO *bio = BIO_new_mem_buf(ca_cert_blob, |
2640 | ca_cert_blob_len); | |
2641 | ||
2642 | if (bio) { | |
2643 | cert = PEM_read_bio_X509(bio, NULL, NULL, NULL); | |
2644 | BIO_free(bio); | |
2645 | } | |
2646 | ||
2647 | if (!cert) { | |
2648 | tls_show_errors(MSG_WARNING, __func__, | |
2649 | "Failed to parse ca_cert_blob"); | |
2650 | return -1; | |
2651 | } | |
2652 | ||
2653 | while (ERR_get_error()) { | |
2654 | /* Ignore errors from DER conversion. */ | |
2655 | } | |
6fc6879b JM |
2656 | } |
2657 | ||
68ae4773 JM |
2658 | if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), |
2659 | cert)) { | |
6fc6879b JM |
2660 | unsigned long err = ERR_peek_error(); |
2661 | tls_show_errors(MSG_WARNING, __func__, | |
2662 | "Failed to add ca_cert_blob to " | |
2663 | "certificate store"); | |
2664 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
2665 | ERR_GET_REASON(err) == | |
2666 | X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
2667 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring " | |
2668 | "cert already in hash table error", | |
2669 | __func__); | |
2670 | } else { | |
2671 | X509_free(cert); | |
2672 | return -1; | |
2673 | } | |
2674 | } | |
2675 | X509_free(cert); | |
2676 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob " | |
2677 | "to certificate store", __func__); | |
6fc6879b JM |
2678 | return 0; |
2679 | } | |
2680 | ||
2a0cd067 | 2681 | #ifdef ANDROID |
a8ef133f | 2682 | /* Single alias */ |
2a0cd067 | 2683 | if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) { |
f150db6c | 2684 | if (tls_add_ca_from_keystore(SSL_CTX_get_cert_store(ssl_ctx), |
a8ef133f | 2685 | &ca_cert[11]) < 0) |
2a0cd067 | 2686 | return -1; |
a8ef133f RX |
2687 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); |
2688 | return 0; | |
2689 | } | |
2a0cd067 | 2690 | |
a8ef133f RX |
2691 | /* Multiple aliases separated by space */ |
2692 | if (ca_cert && os_strncmp("keystores://", ca_cert, 12) == 0) { | |
2693 | char *aliases = os_strdup(&ca_cert[12]); | |
2694 | const char *delim = " "; | |
2695 | int rc = 0; | |
2696 | char *savedptr; | |
2697 | char *alias; | |
2698 | ||
2699 | if (!aliases) | |
2700 | return -1; | |
2701 | alias = strtok_r(aliases, delim, &savedptr); | |
2702 | for (; alias; alias = strtok_r(NULL, delim, &savedptr)) { | |
2703 | if (tls_add_ca_from_keystore_encoded( | |
f150db6c | 2704 | SSL_CTX_get_cert_store(ssl_ctx), alias)) { |
a8ef133f RX |
2705 | wpa_printf(MSG_WARNING, |
2706 | "OpenSSL: %s - Failed to add ca_cert %s from keystore", | |
2707 | __func__, alias); | |
2708 | rc = -1; | |
2709 | break; | |
2a0cd067 DS |
2710 | } |
2711 | } | |
a8ef133f RX |
2712 | os_free(aliases); |
2713 | if (rc) | |
2714 | return rc; | |
2715 | ||
2a0cd067 DS |
2716 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); |
2717 | return 0; | |
2718 | } | |
2719 | #endif /* ANDROID */ | |
2720 | ||
6fc6879b JM |
2721 | #ifdef CONFIG_NATIVE_WINDOWS |
2722 | if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) == | |
2723 | 0) { | |
2724 | wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from " | |
2725 | "system certificate store"); | |
6fc6879b JM |
2726 | return 0; |
2727 | } | |
2728 | #endif /* CONFIG_NATIVE_WINDOWS */ | |
2729 | ||
2730 | if (ca_cert || ca_path) { | |
2731 | #ifndef OPENSSL_NO_STDIO | |
2732 | if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) != | |
2733 | 1) { | |
2734 | tls_show_errors(MSG_WARNING, __func__, | |
2735 | "Failed to load root certificates"); | |
2736 | if (ca_cert && | |
bd9b8b2b | 2737 | tls_load_ca_der(data, ca_cert) == 0) { |
6fc6879b JM |
2738 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded " |
2739 | "DER format CA certificate", | |
2740 | __func__); | |
2741 | } else | |
2742 | return -1; | |
2743 | } else { | |
2744 | wpa_printf(MSG_DEBUG, "TLS: Trusted root " | |
2745 | "certificate(s) loaded"); | |
bd9b8b2b | 2746 | tls_get_errors(data); |
6fc6879b | 2747 | } |
6fc6879b JM |
2748 | #else /* OPENSSL_NO_STDIO */ |
2749 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", | |
2750 | __func__); | |
2751 | return -1; | |
2752 | #endif /* OPENSSL_NO_STDIO */ | |
2753 | } else { | |
2754 | /* No ca_cert configured - do not try to verify server | |
2755 | * certificate */ | |
00468b46 | 2756 | conn->ca_cert_verify = 0; |
6fc6879b JM |
2757 | } |
2758 | ||
2759 | return 0; | |
2760 | } | |
2761 | ||
2762 | ||
bd9b8b2b | 2763 | static int tls_global_ca_cert(struct tls_data *data, const char *ca_cert) |
6fc6879b | 2764 | { |
bd9b8b2b JM |
2765 | SSL_CTX *ssl_ctx = data->ssl; |
2766 | ||
6fc6879b JM |
2767 | if (ca_cert) { |
2768 | if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1) | |
2769 | { | |
2770 | tls_show_errors(MSG_WARNING, __func__, | |
2771 | "Failed to load root certificates"); | |
2772 | return -1; | |
2773 | } | |
2774 | ||
2775 | wpa_printf(MSG_DEBUG, "TLS: Trusted root " | |
2776 | "certificate(s) loaded"); | |
2777 | ||
2778 | #ifndef OPENSSL_NO_STDIO | |
2779 | /* Add the same CAs to the client certificate requests */ | |
2780 | SSL_CTX_set_client_CA_list(ssl_ctx, | |
2781 | SSL_load_client_CA_file(ca_cert)); | |
2782 | #endif /* OPENSSL_NO_STDIO */ | |
159a7fbd JB |
2783 | |
2784 | os_free(data->ca_cert); | |
2785 | data->ca_cert = os_strdup(ca_cert); | |
6fc6879b JM |
2786 | } |
2787 | ||
2788 | return 0; | |
2789 | } | |
2790 | ||
2791 | ||
dd5d325b | 2792 | int tls_global_set_verify(void *ssl_ctx, int check_crl, int strict) |
6fc6879b JM |
2793 | { |
2794 | int flags; | |
2795 | ||
2796 | if (check_crl) { | |
bd9b8b2b JM |
2797 | struct tls_data *data = ssl_ctx; |
2798 | X509_STORE *cs = SSL_CTX_get_cert_store(data->ssl); | |
6fc6879b JM |
2799 | if (cs == NULL) { |
2800 | tls_show_errors(MSG_INFO, __func__, "Failed to get " | |
2801 | "certificate store when enabling " | |
2802 | "check_crl"); | |
2803 | return -1; | |
2804 | } | |
2805 | flags = X509_V_FLAG_CRL_CHECK; | |
2806 | if (check_crl == 2) | |
2807 | flags |= X509_V_FLAG_CRL_CHECK_ALL; | |
2808 | X509_STORE_set_flags(cs, flags); | |
dd5d325b | 2809 | |
159a7fbd | 2810 | data->check_crl = check_crl; |
dd5d325b | 2811 | data->check_crl_strict = strict; |
159a7fbd | 2812 | os_get_reltime(&data->crl_last_reload); |
6fc6879b JM |
2813 | } |
2814 | return 0; | |
2815 | } | |
2816 | ||
2817 | ||
2818 | static int tls_connection_set_subject_match(struct tls_connection *conn, | |
2819 | const char *subject_match, | |
01f809c7 | 2820 | const char *altsubject_match, |
cebee30f | 2821 | const char *suffix_match, |
841205a1 JB |
2822 | const char *domain_match, |
2823 | const char *check_cert_subject) | |
6fc6879b JM |
2824 | { |
2825 | os_free(conn->subject_match); | |
2826 | conn->subject_match = NULL; | |
2827 | if (subject_match) { | |
2828 | conn->subject_match = os_strdup(subject_match); | |
2829 | if (conn->subject_match == NULL) | |
2830 | return -1; | |
2831 | } | |
2832 | ||
2833 | os_free(conn->altsubject_match); | |
2834 | conn->altsubject_match = NULL; | |
2835 | if (altsubject_match) { | |
2836 | conn->altsubject_match = os_strdup(altsubject_match); | |
2837 | if (conn->altsubject_match == NULL) | |
2838 | return -1; | |
2839 | } | |
2840 | ||
01f809c7 JM |
2841 | os_free(conn->suffix_match); |
2842 | conn->suffix_match = NULL; | |
2843 | if (suffix_match) { | |
2844 | conn->suffix_match = os_strdup(suffix_match); | |
2845 | if (conn->suffix_match == NULL) | |
2846 | return -1; | |
2847 | } | |
2848 | ||
cebee30f JM |
2849 | os_free(conn->domain_match); |
2850 | conn->domain_match = NULL; | |
2851 | if (domain_match) { | |
2852 | conn->domain_match = os_strdup(domain_match); | |
2853 | if (conn->domain_match == NULL) | |
2854 | return -1; | |
2855 | } | |
2856 | ||
841205a1 JB |
2857 | os_free(conn->check_cert_subject); |
2858 | conn->check_cert_subject = NULL; | |
2859 | if (check_cert_subject) { | |
2860 | conn->check_cert_subject = os_strdup(check_cert_subject); | |
2861 | if (!conn->check_cert_subject) | |
2862 | return -1; | |
2863 | } | |
2864 | ||
6fc6879b JM |
2865 | return 0; |
2866 | } | |
2867 | ||
2868 | ||
1c9663cf JM |
2869 | #ifdef CONFIG_SUITEB |
2870 | #if OPENSSL_VERSION_NUMBER >= 0x10002000L | |
2871 | static int suiteb_cert_cb(SSL *ssl, void *arg) | |
2872 | { | |
2873 | struct tls_connection *conn = arg; | |
2874 | ||
2875 | /* | |
2876 | * This cert_cb() is not really the best location for doing a | |
2877 | * constraint check for the ServerKeyExchange message, but this seems to | |
2878 | * be the only place where the current OpenSSL sequence can be | |
2879 | * terminated cleanly with an TLS alert going out to the server. | |
2880 | */ | |
2881 | ||
2882 | if (!(conn->flags & TLS_CONN_SUITEB)) | |
2883 | return 1; | |
2884 | ||
2885 | /* DHE is enabled only with DHE-RSA-AES256-GCM-SHA384 */ | |
2886 | if (conn->cipher_suite != 0x9f) | |
2887 | return 1; | |
2888 | ||
2889 | if (conn->server_dh_prime_len >= 3072) | |
2890 | return 1; | |
2891 | ||
2892 | wpa_printf(MSG_DEBUG, | |
2893 | "OpenSSL: Server DH prime length (%d bits) not sufficient for Suite B RSA - reject handshake", | |
2894 | conn->server_dh_prime_len); | |
2895 | return 0; | |
2896 | } | |
2897 | #endif /* OPENSSL_VERSION_NUMBER */ | |
2898 | #endif /* CONFIG_SUITEB */ | |
2899 | ||
2900 | ||
a2c442be JM |
2901 | static int tls_set_conn_flags(struct tls_connection *conn, unsigned int flags, |
2902 | const char *openssl_ciphers) | |
93bc6549 | 2903 | { |
1c9663cf JM |
2904 | SSL *ssl = conn->ssl; |
2905 | ||
93bc6549 JM |
2906 | #ifdef SSL_OP_NO_TICKET |
2907 | if (flags & TLS_CONN_DISABLE_SESSION_TICKET) | |
2908 | SSL_set_options(ssl, SSL_OP_NO_TICKET); | |
93bc6549 JM |
2909 | else |
2910 | SSL_clear_options(ssl, SSL_OP_NO_TICKET); | |
93bc6549 JM |
2911 | #endif /* SSL_OP_NO_TICKET */ |
2912 | ||
2913 | #ifdef SSL_OP_NO_TLSv1 | |
2914 | if (flags & TLS_CONN_DISABLE_TLSv1_0) | |
2915 | SSL_set_options(ssl, SSL_OP_NO_TLSv1); | |
2916 | else | |
2917 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1); | |
2918 | #endif /* SSL_OP_NO_TLSv1 */ | |
2919 | #ifdef SSL_OP_NO_TLSv1_1 | |
2920 | if (flags & TLS_CONN_DISABLE_TLSv1_1) | |
2921 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_1); | |
2922 | else | |
2923 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1_1); | |
2924 | #endif /* SSL_OP_NO_TLSv1_1 */ | |
2925 | #ifdef SSL_OP_NO_TLSv1_2 | |
2926 | if (flags & TLS_CONN_DISABLE_TLSv1_2) | |
2927 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_2); | |
2928 | else | |
2929 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1_2); | |
2930 | #endif /* SSL_OP_NO_TLSv1_2 */ | |
bbbc7e80 JM |
2931 | #ifdef SSL_OP_NO_TLSv1_3 |
2932 | if (flags & TLS_CONN_DISABLE_TLSv1_3) | |
2933 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_3); | |
2934 | else | |
2935 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1_3); | |
2936 | #endif /* SSL_OP_NO_TLSv1_3 */ | |
cc9c4fec JM |
2937 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L |
2938 | if (flags & (TLS_CONN_ENABLE_TLSv1_0 | | |
2939 | TLS_CONN_ENABLE_TLSv1_1 | | |
2940 | TLS_CONN_ENABLE_TLSv1_2)) { | |
2941 | int version = 0; | |
2942 | ||
2943 | /* Explicit request to enable TLS versions even if needing to | |
2944 | * override systemwide policies. */ | |
2945 | if (flags & TLS_CONN_ENABLE_TLSv1_0) { | |
2946 | version = TLS1_VERSION; | |
2947 | } else if (flags & TLS_CONN_ENABLE_TLSv1_1) { | |
2948 | if (!(flags & TLS_CONN_DISABLE_TLSv1_0)) | |
2949 | version = TLS1_1_VERSION; | |
2950 | } else if (flags & TLS_CONN_ENABLE_TLSv1_2) { | |
2951 | if (!(flags & (TLS_CONN_DISABLE_TLSv1_0 | | |
2952 | TLS_CONN_DISABLE_TLSv1_1))) | |
2953 | version = TLS1_2_VERSION; | |
2954 | } | |
2955 | if (!version) { | |
2956 | wpa_printf(MSG_DEBUG, | |
2957 | "OpenSSL: Invalid TLS version configuration"); | |
2958 | return -1; | |
2959 | } | |
2960 | ||
2961 | if (SSL_set_min_proto_version(ssl, version) != 1) { | |
2962 | wpa_printf(MSG_DEBUG, | |
2963 | "OpenSSL: Failed to set minimum TLS version"); | |
2964 | return -1; | |
2965 | } | |
2966 | } | |
2967 | #endif /* >= 1.1.0 */ | |
2968 | ||
60ed2f24 | 2969 | #ifdef CONFIG_SUITEB |
c54cc8bb JM |
2970 | #ifdef OPENSSL_IS_BORINGSSL |
2971 | /* Start with defaults from BoringSSL */ | |
2972 | SSL_CTX_set_verify_algorithm_prefs(conn->ssl_ctx, NULL, 0); | |
2973 | #endif /* OPENSSL_IS_BORINGSSL */ | |
1c9663cf | 2974 | #if OPENSSL_VERSION_NUMBER >= 0x10002000L |
2ed70c75 JM |
2975 | if (flags & TLS_CONN_SUITEB_NO_ECDH) { |
2976 | const char *ciphers = "DHE-RSA-AES256-GCM-SHA384"; | |
2977 | ||
a2c442be JM |
2978 | if (openssl_ciphers) { |
2979 | wpa_printf(MSG_DEBUG, | |
2980 | "OpenSSL: Override ciphers for Suite B (no ECDH): %s", | |
2981 | openssl_ciphers); | |
2982 | ciphers = openssl_ciphers; | |
2983 | } | |
2ed70c75 JM |
2984 | if (SSL_set_cipher_list(ssl, ciphers) != 1) { |
2985 | wpa_printf(MSG_INFO, | |
2986 | "OpenSSL: Failed to set Suite B ciphers"); | |
2987 | return -1; | |
2988 | } | |
2989 | } else if (flags & TLS_CONN_SUITEB) { | |
60ed2f24 JM |
2990 | EC_KEY *ecdh; |
2991 | const char *ciphers = | |
2992 | "ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES256-GCM-SHA384"; | |
35525023 | 2993 | int nid[1] = { NID_secp384r1 }; |
60ed2f24 | 2994 | |
a2c442be JM |
2995 | if (openssl_ciphers) { |
2996 | wpa_printf(MSG_DEBUG, | |
2997 | "OpenSSL: Override ciphers for Suite B: %s", | |
2998 | openssl_ciphers); | |
2999 | ciphers = openssl_ciphers; | |
3000 | } | |
60ed2f24 JM |
3001 | if (SSL_set_cipher_list(ssl, ciphers) != 1) { |
3002 | wpa_printf(MSG_INFO, | |
3003 | "OpenSSL: Failed to set Suite B ciphers"); | |
3004 | return -1; | |
3005 | } | |
3006 | ||
35525023 | 3007 | if (SSL_set1_curves(ssl, nid, 1) != 1) { |
60ed2f24 JM |
3008 | wpa_printf(MSG_INFO, |
3009 | "OpenSSL: Failed to set Suite B curves"); | |
3010 | return -1; | |
3011 | } | |
60ed2f24 JM |
3012 | |
3013 | ecdh = EC_KEY_new_by_curve_name(NID_secp384r1); | |
3014 | if (!ecdh || SSL_set_tmp_ecdh(ssl, ecdh) != 1) { | |
3015 | EC_KEY_free(ecdh); | |
3016 | wpa_printf(MSG_INFO, | |
3017 | "OpenSSL: Failed to set ECDH parameter"); | |
3018 | return -1; | |
3019 | } | |
3020 | EC_KEY_free(ecdh); | |
2ed70c75 JM |
3021 | } |
3022 | if (flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) { | |
c54cc8bb JM |
3023 | #ifdef OPENSSL_IS_BORINGSSL |
3024 | uint16_t sigalgs[1] = { SSL_SIGN_RSA_PKCS1_SHA384 }; | |
3025 | ||
3026 | if (SSL_CTX_set_verify_algorithm_prefs(conn->ssl_ctx, sigalgs, | |
3027 | 1) != 1) { | |
3028 | wpa_printf(MSG_INFO, | |
3029 | "OpenSSL: Failed to set Suite B sigalgs"); | |
3030 | return -1; | |
3031 | } | |
3032 | #else /* OPENSSL_IS_BORINGSSL */ | |
2ed70c75 JM |
3033 | /* ECDSA+SHA384 if need to add EC support here */ |
3034 | if (SSL_set1_sigalgs_list(ssl, "RSA+SHA384") != 1) { | |
3035 | wpa_printf(MSG_INFO, | |
3036 | "OpenSSL: Failed to set Suite B sigalgs"); | |
3037 | return -1; | |
3038 | } | |
b9dc63c2 | 3039 | #endif /* OPENSSL_IS_BORINGSSL */ |
60ed2f24 JM |
3040 | |
3041 | SSL_set_options(ssl, SSL_OP_NO_TLSv1); | |
3042 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_1); | |
1c9663cf JM |
3043 | SSL_set_cert_cb(ssl, suiteb_cert_cb, conn); |
3044 | } | |
3045 | #else /* OPENSSL_VERSION_NUMBER < 0x10002000L */ | |
3046 | if (flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) { | |
3047 | wpa_printf(MSG_ERROR, | |
3048 | "OpenSSL: Suite B RSA case not supported with this OpenSSL version"); | |
3049 | return -1; | |
60ed2f24 | 3050 | } |
1c9663cf | 3051 | #endif /* OPENSSL_VERSION_NUMBER */ |
7a47f34b JM |
3052 | |
3053 | #ifdef OPENSSL_IS_BORINGSSL | |
3054 | if (openssl_ciphers && os_strcmp(openssl_ciphers, "SUITEB192") == 0) { | |
aa6de8e6 | 3055 | uint16_t sigalgs[1] = { SSL_SIGN_ECDSA_SECP384R1_SHA384 }; |
7a47f34b JM |
3056 | int nid[1] = { NID_secp384r1 }; |
3057 | ||
3058 | if (SSL_set1_curves(ssl, nid, 1) != 1) { | |
3059 | wpa_printf(MSG_INFO, | |
3060 | "OpenSSL: Failed to set Suite B curves"); | |
3061 | return -1; | |
3062 | } | |
aa6de8e6 JM |
3063 | |
3064 | if (SSL_CTX_set_verify_algorithm_prefs(conn->ssl_ctx, sigalgs, | |
3065 | 1) != 1) { | |
3066 | wpa_printf(MSG_INFO, | |
3067 | "OpenSSL: Failed to set Suite B sigalgs"); | |
3068 | return -1; | |
3069 | } | |
7a47f34b | 3070 | } |
cc9c4fec JM |
3071 | #else /* OPENSSL_IS_BORINGSSL */ |
3072 | if (!(flags & (TLS_CONN_SUITEB | TLS_CONN_SUITEB_NO_ECDH)) && | |
3073 | openssl_ciphers && SSL_set_cipher_list(ssl, openssl_ciphers) != 1) { | |
3074 | wpa_printf(MSG_INFO, | |
3075 | "OpenSSL: Failed to set openssl_ciphers '%s'", | |
3076 | openssl_ciphers); | |
3077 | return -1; | |
3078 | } | |
7a47f34b | 3079 | #endif /* OPENSSL_IS_BORINGSSL */ |
cc9c4fec JM |
3080 | #else /* CONFIG_SUITEB */ |
3081 | if (openssl_ciphers && SSL_set_cipher_list(ssl, openssl_ciphers) != 1) { | |
3082 | wpa_printf(MSG_INFO, | |
3083 | "OpenSSL: Failed to set openssl_ciphers '%s'", | |
3084 | openssl_ciphers); | |
3085 | return -1; | |
3086 | } | |
60ed2f24 JM |
3087 | #endif /* CONFIG_SUITEB */ |
3088 | ||
3ec65a8e JM |
3089 | if (flags & TLS_CONN_TEAP_ANON_DH) { |
3090 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER) | |
3091 | #ifndef TEAP_DH_ANON_CS | |
3092 | #define TEAP_DH_ANON_CS \ | |
3093 | "ECDHE-RSA-AES256-GCM-SHA384:ECDHE-RSA-AES128-GCM-SHA256:" \ | |
3094 | "ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA256:" \ | |
3095 | "ECDHE-RSA-AES256-SHA:ECDHE-RSA-AES128-SHA:" \ | |
3096 | "DHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:" \ | |
3097 | "DHE-RSA-AES256-SHA256:DHE-RSA-AES128-SHA256:" \ | |
3098 | "DHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA:" \ | |
3099 | "ADH-AES256-GCM-SHA384:ADH-AES128-GCM-SHA256:" \ | |
3100 | "ADH-AES256-SHA256:ADH-AES128-SHA256:ADH-AES256-SHA:ADH-AES128-SHA" | |
3101 | #endif | |
3102 | static const char *cs = TEAP_DH_ANON_CS; | |
3103 | /* | |
3104 | * Need to drop to security level 0 to allow anonymous | |
3105 | * cipher suites for EAP-TEAP. | |
3106 | */ | |
3107 | SSL_set_security_level(conn->ssl, 0); | |
3108 | #endif | |
3109 | ||
3110 | wpa_printf(MSG_DEBUG, | |
3111 | "OpenSSL: Enable cipher suites for anonymous EAP-TEAP provisioning: %s", | |
3112 | cs); | |
3113 | if (SSL_set_cipher_list(conn->ssl, cs) != 1) { | |
3114 | tls_show_errors(MSG_INFO, __func__, | |
3115 | "Cipher suite configuration failed"); | |
3116 | return -1; | |
3117 | } | |
3118 | } | |
3119 | ||
60ed2f24 | 3120 | return 0; |
93bc6549 JM |
3121 | } |
3122 | ||
3123 | ||
6fc6879b | 3124 | int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn, |
bfbebd26 JM |
3125 | int verify_peer, unsigned int flags, |
3126 | const u8 *session_ctx, size_t session_ctx_len) | |
6fc6879b | 3127 | { |
bf206cad | 3128 | static int counter = 0; |
acf36f31 | 3129 | struct tls_data *data = ssl_ctx; |
bf206cad | 3130 | |
6fc6879b JM |
3131 | if (conn == NULL) |
3132 | return -1; | |
3133 | ||
3134 | if (verify_peer) { | |
00468b46 | 3135 | conn->ca_cert_verify = 1; |
6fc6879b JM |
3136 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER | |
3137 | SSL_VERIFY_FAIL_IF_NO_PEER_CERT | | |
3138 | SSL_VERIFY_CLIENT_ONCE, tls_verify_cb); | |
3139 | } else { | |
00468b46 | 3140 | conn->ca_cert_verify = 0; |
6fc6879b JM |
3141 | SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL); |
3142 | } | |
3143 | ||
a2c442be | 3144 | if (tls_set_conn_flags(conn, flags, NULL) < 0) |
60ed2f24 | 3145 | return -1; |
93bc6549 JM |
3146 | conn->flags = flags; |
3147 | ||
6fc6879b JM |
3148 | SSL_set_accept_state(conn->ssl); |
3149 | ||
acf36f31 JM |
3150 | if (data->tls_session_lifetime == 0) { |
3151 | /* | |
3152 | * Set session id context to a unique value to make sure | |
3153 | * session resumption cannot be used either through session | |
3154 | * caching or TLS ticket extension. | |
3155 | */ | |
3156 | counter++; | |
3157 | SSL_set_session_id_context(conn->ssl, | |
3158 | (const unsigned char *) &counter, | |
3159 | sizeof(counter)); | |
3160 | } else if (session_ctx) { | |
3161 | SSL_set_session_id_context(conn->ssl, session_ctx, | |
3162 | session_ctx_len); | |
3163 | } | |
bf206cad | 3164 | |
6fc6879b JM |
3165 | return 0; |
3166 | } | |
3167 | ||
3168 | ||
3169 | static int tls_connection_client_cert(struct tls_connection *conn, | |
3170 | const char *client_cert, | |
3171 | const u8 *client_cert_blob, | |
3172 | size_t client_cert_blob_len) | |
3173 | { | |
3174 | if (client_cert == NULL && client_cert_blob == NULL) | |
3175 | return 0; | |
3176 | ||
21cb63ff | 3177 | #ifdef PKCS12_FUNCS |
df426738 | 3178 | #if OPENSSL_VERSION_NUMBER < 0x10002000L || defined(LIBRESSL_VERSION_NUMBER) |
21cb63ff JM |
3179 | /* |
3180 | * Clear previously set extra chain certificates, if any, from PKCS#12 | |
3181 | * processing in tls_parse_pkcs12() to allow OpenSSL to build a new | |
3182 | * chain properly. | |
3183 | */ | |
3184 | SSL_CTX_clear_extra_chain_certs(conn->ssl_ctx); | |
3185 | #endif /* OPENSSL_VERSION_NUMBER < 0x10002000L */ | |
3186 | #endif /* PKCS12_FUNCS */ | |
3187 | ||
6fc6879b JM |
3188 | if (client_cert_blob && |
3189 | SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob, | |
3190 | client_cert_blob_len) == 1) { | |
3191 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> " | |
3192 | "OK"); | |
3193 | return 0; | |
3194 | } else if (client_cert_blob) { | |
3195 | tls_show_errors(MSG_DEBUG, __func__, | |
3196 | "SSL_use_certificate_ASN1 failed"); | |
3197 | } | |
3198 | ||
3199 | if (client_cert == NULL) | |
3200 | return -1; | |
3201 | ||
2a0cd067 DS |
3202 | #ifdef ANDROID |
3203 | if (os_strncmp("keystore://", client_cert, 11) == 0) { | |
3204 | BIO *bio = BIO_from_keystore(&client_cert[11]); | |
3205 | X509 *x509 = NULL; | |
3206 | int ret = -1; | |
3207 | if (bio) { | |
3208 | x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL); | |
2a0cd067 DS |
3209 | } |
3210 | if (x509) { | |
3211 | if (SSL_use_certificate(conn->ssl, x509) == 1) | |
3212 | ret = 0; | |
3213 | X509_free(x509); | |
3214 | } | |
6d08f23f PS |
3215 | |
3216 | /* Read additional certificates into the chain. */ | |
3217 | while (bio) { | |
3218 | x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL); | |
3219 | if (x509) { | |
3220 | /* Takes ownership of x509 */ | |
3221 | SSL_add0_chain_cert(conn->ssl, x509); | |
3222 | } else { | |
3223 | BIO_free(bio); | |
3224 | bio = NULL; | |
3225 | } | |
3226 | } | |
2a0cd067 DS |
3227 | return ret; |
3228 | } | |
3229 | #endif /* ANDROID */ | |
3230 | ||
6fc6879b JM |
3231 | #ifndef OPENSSL_NO_STDIO |
3232 | if (SSL_use_certificate_file(conn->ssl, client_cert, | |
3233 | SSL_FILETYPE_ASN1) == 1) { | |
3234 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)" | |
3235 | " --> OK"); | |
3236 | return 0; | |
6fc6879b JM |
3237 | } |
3238 | ||
bf84e78c JM |
3239 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && \ |
3240 | !defined(LIBRESSL_VERSION_NUMBER) && !defined(OPENSSL_IS_BORINGSSL) | |
658c3980 | 3241 | if (SSL_use_certificate_chain_file(conn->ssl, client_cert) == 1) { |
effab86f | 3242 | ERR_clear_error(); |
658c3980 | 3243 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_chain_file" |
6fc6879b JM |
3244 | " --> OK"); |
3245 | return 0; | |
6fc6879b | 3246 | } |
568e890e JM |
3247 | #else |
3248 | if (SSL_use_certificate_file(conn->ssl, client_cert, | |
3249 | SSL_FILETYPE_PEM) == 1) { | |
3250 | ERR_clear_error(); | |
3251 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)" | |
3252 | " --> OK"); | |
3253 | return 0; | |
3254 | } | |
3255 | #endif | |
effab86f JM |
3256 | |
3257 | tls_show_errors(MSG_DEBUG, __func__, | |
3258 | "SSL_use_certificate_file failed"); | |
6fc6879b JM |
3259 | #else /* OPENSSL_NO_STDIO */ |
3260 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__); | |
3261 | #endif /* OPENSSL_NO_STDIO */ | |
3262 | ||
3263 | return -1; | |
3264 | } | |
3265 | ||
3266 | ||
bd9b8b2b JM |
3267 | static int tls_global_client_cert(struct tls_data *data, |
3268 | const char *client_cert) | |
6fc6879b JM |
3269 | { |
3270 | #ifndef OPENSSL_NO_STDIO | |
bd9b8b2b JM |
3271 | SSL_CTX *ssl_ctx = data->ssl; |
3272 | ||
6fc6879b JM |
3273 | if (client_cert == NULL) |
3274 | return 0; | |
3275 | ||
3276 | if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert, | |
3277 | SSL_FILETYPE_ASN1) != 1 && | |
65897747 | 3278 | SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 && |
6fc6879b JM |
3279 | SSL_CTX_use_certificate_file(ssl_ctx, client_cert, |
3280 | SSL_FILETYPE_PEM) != 1) { | |
3281 | tls_show_errors(MSG_INFO, __func__, | |
3282 | "Failed to load client certificate"); | |
3283 | return -1; | |
3284 | } | |
3285 | return 0; | |
3286 | #else /* OPENSSL_NO_STDIO */ | |
3287 | if (client_cert == NULL) | |
3288 | return 0; | |
3289 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__); | |
3290 | return -1; | |
3291 | #endif /* OPENSSL_NO_STDIO */ | |
3292 | } | |
3293 | ||
3294 | ||
6fc6879b | 3295 | #ifdef PKCS12_FUNCS |
bd9b8b2b | 3296 | static int tls_parse_pkcs12(struct tls_data *data, SSL *ssl, PKCS12 *p12, |
6fc6879b JM |
3297 | const char *passwd) |
3298 | { | |
3299 | EVP_PKEY *pkey; | |
3300 | X509 *cert; | |
3301 | STACK_OF(X509) *certs; | |
3302 | int res = 0; | |
3303 | char buf[256]; | |
3304 | ||
3305 | pkey = NULL; | |
3306 | cert = NULL; | |
3307 | certs = NULL; | |
c07e7b43 JM |
3308 | if (!passwd) |
3309 | passwd = ""; | |
6fc6879b JM |
3310 | if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) { |
3311 | tls_show_errors(MSG_DEBUG, __func__, | |
3312 | "Failed to parse PKCS12 file"); | |
3313 | PKCS12_free(p12); | |
3314 | return -1; | |
3315 | } | |
3316 | wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data"); | |
3317 | ||
3318 | if (cert) { | |
3319 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
3320 | sizeof(buf)); | |
3321 | wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: " | |
3322 | "subject='%s'", buf); | |
3323 | if (ssl) { | |
3324 | if (SSL_use_certificate(ssl, cert) != 1) | |
3325 | res = -1; | |
3326 | } else { | |
bd9b8b2b | 3327 | if (SSL_CTX_use_certificate(data->ssl, cert) != 1) |
6fc6879b JM |
3328 | res = -1; |
3329 | } | |
3330 | X509_free(cert); | |
3331 | } | |
3332 | ||
3333 | if (pkey) { | |
3334 | wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12"); | |
3335 | if (ssl) { | |
3336 | if (SSL_use_PrivateKey(ssl, pkey) != 1) | |
3337 | res = -1; | |
3338 | } else { | |
bd9b8b2b | 3339 | if (SSL_CTX_use_PrivateKey(data->ssl, pkey) != 1) |
6fc6879b JM |
3340 | res = -1; |
3341 | } | |
3342 | EVP_PKEY_free(pkey); | |
3343 | } | |
3344 | ||
3345 | if (certs) { | |
36e82060 | 3346 | #if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER) |
dda091cf AB |
3347 | if (ssl) |
3348 | SSL_clear_chain_certs(ssl); | |
3349 | else | |
3350 | SSL_CTX_clear_chain_certs(data->ssl); | |
de2a7b79 JM |
3351 | while ((cert = sk_X509_pop(certs)) != NULL) { |
3352 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
3353 | sizeof(buf)); | |
3354 | wpa_printf(MSG_DEBUG, "TLS: additional certificate" | |
3355 | " from PKCS12: subject='%s'", buf); | |
dda091cf AB |
3356 | if ((ssl && SSL_add1_chain_cert(ssl, cert) != 1) || |
3357 | (!ssl && SSL_CTX_add1_chain_cert(data->ssl, | |
3358 | cert) != 1)) { | |
20f331b7 JM |
3359 | tls_show_errors(MSG_DEBUG, __func__, |
3360 | "Failed to add additional certificate"); | |
de2a7b79 | 3361 | res = -1; |
8bcf8de8 | 3362 | X509_free(cert); |
de2a7b79 JM |
3363 | break; |
3364 | } | |
8bcf8de8 | 3365 | X509_free(cert); |
de2a7b79 | 3366 | } |
20f331b7 JM |
3367 | if (!res) { |
3368 | /* Try to continue anyway */ | |
3369 | } | |
8bcf8de8 | 3370 | sk_X509_pop_free(certs, X509_free); |
226cdea6 | 3371 | #ifndef OPENSSL_IS_BORINGSSL |
dda091cf AB |
3372 | if (ssl) |
3373 | res = SSL_build_cert_chain( | |
3374 | ssl, | |
3375 | SSL_BUILD_CHAIN_FLAG_CHECK | | |
3376 | SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR); | |
3377 | else | |
3378 | res = SSL_CTX_build_cert_chain( | |
3379 | data->ssl, | |
3380 | SSL_BUILD_CHAIN_FLAG_CHECK | | |
3381 | SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR); | |
de2a7b79 JM |
3382 | if (!res) { |
3383 | tls_show_errors(MSG_DEBUG, __func__, | |
3384 | "Failed to build certificate chain"); | |
3385 | } else if (res == 2) { | |
3386 | wpa_printf(MSG_DEBUG, | |
3387 | "TLS: Ignore certificate chain verification error when building chain with PKCS#12 extra certificates"); | |
3388 | } | |
226cdea6 | 3389 | #endif /* OPENSSL_IS_BORINGSSL */ |
de2a7b79 JM |
3390 | /* |
3391 | * Try to continue regardless of result since it is possible for | |
3392 | * the extra certificates not to be required. | |
3393 | */ | |
3394 | res = 0; | |
3395 | #else /* OPENSSL_VERSION_NUMBER >= 0x10002000L */ | |
bd9b8b2b | 3396 | SSL_CTX_clear_extra_chain_certs(data->ssl); |
6fc6879b JM |
3397 | while ((cert = sk_X509_pop(certs)) != NULL) { |
3398 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
3399 | sizeof(buf)); | |
3400 | wpa_printf(MSG_DEBUG, "TLS: additional certificate" | |
3401 | " from PKCS12: subject='%s'", buf); | |
3402 | /* | |
3403 | * There is no SSL equivalent for the chain cert - so | |
3404 | * always add it to the context... | |
3405 | */ | |
bd9b8b2b JM |
3406 | if (SSL_CTX_add_extra_chain_cert(data->ssl, cert) != 1) |
3407 | { | |
8bcf8de8 | 3408 | X509_free(cert); |
6fc6879b JM |
3409 | res = -1; |
3410 | break; | |
3411 | } | |
3412 | } | |
8bcf8de8 | 3413 | sk_X509_pop_free(certs, X509_free); |
de2a7b79 | 3414 | #endif /* OPENSSL_VERSION_NUMBER >= 0x10002000L */ |
6fc6879b JM |
3415 | } |
3416 | ||
3417 | PKCS12_free(p12); | |
3418 | ||
3419 | if (res < 0) | |
bd9b8b2b | 3420 | tls_get_errors(data); |
6fc6879b JM |
3421 | |
3422 | return res; | |
3423 | } | |
3424 | #endif /* PKCS12_FUNCS */ | |
3425 | ||
3426 | ||
bd9b8b2b JM |
3427 | static int tls_read_pkcs12(struct tls_data *data, SSL *ssl, |
3428 | const char *private_key, const char *passwd) | |
6fc6879b JM |
3429 | { |
3430 | #ifdef PKCS12_FUNCS | |
3431 | FILE *f; | |
3432 | PKCS12 *p12; | |
3433 | ||
3434 | f = fopen(private_key, "rb"); | |
3435 | if (f == NULL) | |
3436 | return -1; | |
3437 | ||
3438 | p12 = d2i_PKCS12_fp(f, NULL); | |
3439 | fclose(f); | |
3440 | ||
3441 | if (p12 == NULL) { | |
3442 | tls_show_errors(MSG_INFO, __func__, | |
3443 | "Failed to use PKCS#12 file"); | |
3444 | return -1; | |
3445 | } | |
3446 | ||
bd9b8b2b | 3447 | return tls_parse_pkcs12(data, ssl, p12, passwd); |
6fc6879b JM |
3448 | |
3449 | #else /* PKCS12_FUNCS */ | |
3450 | wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read " | |
3451 | "p12/pfx files"); | |
3452 | return -1; | |
3453 | #endif /* PKCS12_FUNCS */ | |
3454 | } | |
3455 | ||
3456 | ||
bd9b8b2b | 3457 | static int tls_read_pkcs12_blob(struct tls_data *data, SSL *ssl, |
6fc6879b JM |
3458 | const u8 *blob, size_t len, const char *passwd) |
3459 | { | |
3460 | #ifdef PKCS12_FUNCS | |
3461 | PKCS12 *p12; | |
3462 | ||
fee31f76 | 3463 | p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len); |
6fc6879b JM |
3464 | if (p12 == NULL) { |
3465 | tls_show_errors(MSG_INFO, __func__, | |
3466 | "Failed to use PKCS#12 blob"); | |
3467 | return -1; | |
3468 | } | |
3469 | ||
bd9b8b2b | 3470 | return tls_parse_pkcs12(data, ssl, p12, passwd); |
6fc6879b JM |
3471 | |
3472 | #else /* PKCS12_FUNCS */ | |
3473 | wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse " | |
3474 | "p12/pfx blobs"); | |
3475 | return -1; | |
3476 | #endif /* PKCS12_FUNCS */ | |
3477 | } | |
3478 | ||
3479 | ||
e572cb63 | 3480 | #ifndef OPENSSL_NO_ENGINE |
e59c91af DS |
3481 | static int tls_engine_get_cert(struct tls_connection *conn, |
3482 | const char *cert_id, | |
3483 | X509 **cert) | |
3484 | { | |
e59c91af DS |
3485 | /* this runs after the private key is loaded so no PIN is required */ |
3486 | struct { | |
3487 | const char *cert_id; | |
3488 | X509 *cert; | |
3489 | } params; | |
3490 | params.cert_id = cert_id; | |
3491 | params.cert = NULL; | |
3492 | ||
3493 | if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL", | |
3494 | 0, ¶ms, NULL, 1)) { | |
fd4fb281 MG |
3495 | unsigned long err = ERR_get_error(); |
3496 | ||
e59c91af DS |
3497 | wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id" |
3498 | " '%s' [%s]", cert_id, | |
fd4fb281 MG |
3499 | ERR_error_string(err, NULL)); |
3500 | if (tls_is_pin_error(err)) | |
3501 | return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN; | |
e59c91af DS |
3502 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; |
3503 | } | |
3504 | if (!params.cert) { | |
3505 | wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id" | |
3506 | " '%s'", cert_id); | |
3507 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
3508 | } | |
3509 | *cert = params.cert; | |
3510 | return 0; | |
e59c91af | 3511 | } |
e572cb63 | 3512 | #endif /* OPENSSL_NO_ENGINE */ |
e59c91af DS |
3513 | |
3514 | ||
3515 | static int tls_connection_engine_client_cert(struct tls_connection *conn, | |
3516 | const char *cert_id) | |
3517 | { | |
3518 | #ifndef OPENSSL_NO_ENGINE | |
3519 | X509 *cert; | |
3520 | ||
3521 | if (tls_engine_get_cert(conn, cert_id, &cert)) | |
3522 | return -1; | |
3523 | ||
3524 | if (!SSL_use_certificate(conn->ssl, cert)) { | |
3525 | tls_show_errors(MSG_ERROR, __func__, | |
3526 | "SSL_use_certificate failed"); | |
3527 | X509_free(cert); | |
3528 | return -1; | |
3529 | } | |
3530 | X509_free(cert); | |
3531 | wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> " | |
3532 | "OK"); | |
3533 | return 0; | |
3534 | ||
3535 | #else /* OPENSSL_NO_ENGINE */ | |
3536 | return -1; | |
3537 | #endif /* OPENSSL_NO_ENGINE */ | |
3538 | } | |
3539 | ||
3540 | ||
bd9b8b2b | 3541 | static int tls_connection_engine_ca_cert(struct tls_data *data, |
e59c91af DS |
3542 | struct tls_connection *conn, |
3543 | const char *ca_cert_id) | |
3544 | { | |
3545 | #ifndef OPENSSL_NO_ENGINE | |
3546 | X509 *cert; | |
bd9b8b2b | 3547 | SSL_CTX *ssl_ctx = data->ssl; |
68ae4773 | 3548 | X509_STORE *store; |
e59c91af DS |
3549 | |
3550 | if (tls_engine_get_cert(conn, ca_cert_id, &cert)) | |
3551 | return -1; | |
3552 | ||
3553 | /* start off the same as tls_connection_ca_cert */ | |
68ae4773 JM |
3554 | store = X509_STORE_new(); |
3555 | if (store == NULL) { | |
e59c91af DS |
3556 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new " |
3557 | "certificate store", __func__); | |
3558 | X509_free(cert); | |
3559 | return -1; | |
3560 | } | |
68ae4773 JM |
3561 | SSL_CTX_set_cert_store(ssl_ctx, store); |
3562 | if (!X509_STORE_add_cert(store, cert)) { | |
e59c91af DS |
3563 | unsigned long err = ERR_peek_error(); |
3564 | tls_show_errors(MSG_WARNING, __func__, | |
3565 | "Failed to add CA certificate from engine " | |
3566 | "to certificate store"); | |
3567 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
3568 | ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
3569 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert" | |
3570 | " already in hash table error", | |
3571 | __func__); | |
3572 | } else { | |
3573 | X509_free(cert); | |
3574 | return -1; | |
3575 | } | |
3576 | } | |
3577 | X509_free(cert); | |
3578 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine " | |
3579 | "to certificate store", __func__); | |
3580 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); | |
d8858cad CW |
3581 | conn->ca_cert_verify = 1; |
3582 | ||
e59c91af DS |
3583 | return 0; |
3584 | ||
3585 | #else /* OPENSSL_NO_ENGINE */ | |
3586 | return -1; | |
3587 | #endif /* OPENSSL_NO_ENGINE */ | |
3588 | } | |
3589 | ||
3590 | ||
6fc6879b JM |
3591 | static int tls_connection_engine_private_key(struct tls_connection *conn) |
3592 | { | |
aeeb0bca | 3593 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
3594 | if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) { |
3595 | tls_show_errors(MSG_ERROR, __func__, | |
3596 | "ENGINE: cannot use private key for TLS"); | |
3597 | return -1; | |
3598 | } | |
3599 | if (!SSL_check_private_key(conn->ssl)) { | |
3600 | tls_show_errors(MSG_INFO, __func__, | |
3601 | "Private key failed verification"); | |
3602 | return -1; | |
3603 | } | |
3604 | return 0; | |
3605 | #else /* OPENSSL_NO_ENGINE */ | |
3606 | wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but " | |
3607 | "engine support was not compiled in"); | |
3608 | return -1; | |
3609 | #endif /* OPENSSL_NO_ENGINE */ | |
3610 | } | |
3611 | ||
3612 | ||
63942cf0 DB |
3613 | #ifndef OPENSSL_NO_STDIO |
3614 | static int tls_passwd_cb(char *buf, int size, int rwflag, void *password) | |
89971d8b | 3615 | { |
63942cf0 DB |
3616 | if (!password) |
3617 | return 0; | |
3618 | os_strlcpy(buf, (const char *) password, size); | |
3619 | return os_strlen(buf); | |
3620 | } | |
3621 | #endif /* OPENSSL_NO_STDIO */ | |
3622 | ||
3623 | ||
3624 | static int tls_use_private_key_file(struct tls_data *data, SSL *ssl, | |
3625 | const char *private_key, | |
3626 | const char *private_key_passwd) | |
3627 | { | |
3628 | #ifndef OPENSSL_NO_STDIO | |
3629 | BIO *bio; | |
3630 | EVP_PKEY *pkey; | |
3631 | int ret; | |
3632 | ||
3633 | /* First try ASN.1 (DER). */ | |
3634 | bio = BIO_new_file(private_key, "r"); | |
3635 | if (!bio) | |
3636 | return -1; | |
3637 | pkey = d2i_PrivateKey_bio(bio, NULL); | |
3638 | BIO_free(bio); | |
3639 | ||
3640 | if (pkey) { | |
3641 | wpa_printf(MSG_DEBUG, "OpenSSL: %s (DER) --> loaded", __func__); | |
3642 | } else { | |
3643 | /* Try PEM with the provided password. */ | |
3644 | bio = BIO_new_file(private_key, "r"); | |
3645 | if (!bio) | |
3646 | return -1; | |
3647 | pkey = PEM_read_bio_PrivateKey(bio, NULL, tls_passwd_cb, | |
3648 | (void *) private_key_passwd); | |
3649 | BIO_free(bio); | |
3650 | if (!pkey) | |
3651 | return -1; | |
3652 | wpa_printf(MSG_DEBUG, "OpenSSL: %s (PEM) --> loaded", __func__); | |
3653 | /* Clear errors from the previous failed load. */ | |
3654 | ERR_clear_error(); | |
89971d8b | 3655 | } |
63942cf0 DB |
3656 | |
3657 | if (ssl) | |
3658 | ret = SSL_use_PrivateKey(ssl, pkey); | |
3659 | else | |
3660 | ret = SSL_CTX_use_PrivateKey(data->ssl, pkey); | |
3661 | ||
3662 | EVP_PKEY_free(pkey); | |
3663 | return ret == 1 ? 0 : -1; | |
3664 | #else /* OPENSSL_NO_STDIO */ | |
3665 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__); | |
3666 | return -1; | |
3667 | #endif /* OPENSSL_NO_STDIO */ | |
89971d8b JM |
3668 | } |
3669 | ||
3670 | ||
bd9b8b2b | 3671 | static int tls_connection_private_key(struct tls_data *data, |
6fc6879b JM |
3672 | struct tls_connection *conn, |
3673 | const char *private_key, | |
3674 | const char *private_key_passwd, | |
3675 | const u8 *private_key_blob, | |
3676 | size_t private_key_blob_len) | |
3677 | { | |
6fc6879b JM |
3678 | int ok; |
3679 | ||
3680 | if (private_key == NULL && private_key_blob == NULL) | |
3681 | return 0; | |
3682 | ||
6fc6879b JM |
3683 | ok = 0; |
3684 | while (private_key_blob) { | |
3685 | if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl, | |
3686 | (u8 *) private_key_blob, | |
3687 | private_key_blob_len) == 1) { | |
3688 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_" | |
3689 | "ASN1(EVP_PKEY_RSA) --> OK"); | |
3690 | ok = 1; | |
3691 | break; | |
6fc6879b JM |
3692 | } |
3693 | ||
3694 | if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl, | |
3695 | (u8 *) private_key_blob, | |
3696 | private_key_blob_len) == 1) { | |
3697 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_" | |
3698 | "ASN1(EVP_PKEY_DSA) --> OK"); | |
3699 | ok = 1; | |
3700 | break; | |
6fc6879b JM |
3701 | } |
3702 | ||
3703 | if (SSL_use_RSAPrivateKey_ASN1(conn->ssl, | |
3704 | (u8 *) private_key_blob, | |
3705 | private_key_blob_len) == 1) { | |
3706 | wpa_printf(MSG_DEBUG, "OpenSSL: " | |
3707 | "SSL_use_RSAPrivateKey_ASN1 --> OK"); | |
3708 | ok = 1; | |
3709 | break; | |
6fc6879b JM |
3710 | } |
3711 | ||
bd9b8b2b | 3712 | if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob, |
149143e3 DB |
3713 | private_key_blob_len, |
3714 | private_key_passwd) == 0) { | |
6fc6879b JM |
3715 | wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> " |
3716 | "OK"); | |
3717 | ok = 1; | |
3718 | break; | |
3719 | } | |
3720 | ||
3721 | break; | |
3722 | } | |
3723 | ||
3724 | while (!ok && private_key) { | |
63942cf0 DB |
3725 | if (tls_use_private_key_file(data, conn->ssl, private_key, |
3726 | private_key_passwd) == 0) { | |
6fc6879b JM |
3727 | ok = 1; |
3728 | break; | |
6fc6879b | 3729 | } |
6fc6879b | 3730 | |
149143e3 DB |
3731 | if (tls_read_pkcs12(data, conn->ssl, private_key, |
3732 | private_key_passwd) == 0) { | |
6fc6879b JM |
3733 | wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file " |
3734 | "--> OK"); | |
3735 | ok = 1; | |
3736 | break; | |
3737 | } | |
3738 | ||
3739 | if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) { | |
3740 | wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to " | |
3741 | "access certificate store --> OK"); | |
3742 | ok = 1; | |
3743 | break; | |
3744 | } | |
3745 | ||
3746 | break; | |
3747 | } | |
3748 | ||
3749 | if (!ok) { | |
effab86f JM |
3750 | tls_show_errors(MSG_INFO, __func__, |
3751 | "Failed to load private key"); | |
6fc6879b JM |
3752 | return -1; |
3753 | } | |
3754 | ERR_clear_error(); | |
55651a4b | 3755 | |
6fc6879b JM |
3756 | if (!SSL_check_private_key(conn->ssl)) { |
3757 | tls_show_errors(MSG_INFO, __func__, "Private key failed " | |
3758 | "verification"); | |
3759 | return -1; | |
3760 | } | |
3761 | ||
3762 | wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully"); | |
3763 | return 0; | |
3764 | } | |
3765 | ||
3766 | ||
bd9b8b2b JM |
3767 | static int tls_global_private_key(struct tls_data *data, |
3768 | const char *private_key, | |
6fc6879b JM |
3769 | const char *private_key_passwd) |
3770 | { | |
bd9b8b2b | 3771 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
3772 | |
3773 | if (private_key == NULL) | |
3774 | return 0; | |
3775 | ||
63942cf0 DB |
3776 | if (tls_use_private_key_file(data, NULL, private_key, |
3777 | private_key_passwd) && | |
149143e3 | 3778 | tls_read_pkcs12(data, NULL, private_key, private_key_passwd)) { |
6fc6879b JM |
3779 | tls_show_errors(MSG_INFO, __func__, |
3780 | "Failed to load private key"); | |
6fc6879b JM |
3781 | ERR_clear_error(); |
3782 | return -1; | |
3783 | } | |
6fc6879b | 3784 | ERR_clear_error(); |
55651a4b | 3785 | |
6fc6879b JM |
3786 | if (!SSL_CTX_check_private_key(ssl_ctx)) { |
3787 | tls_show_errors(MSG_INFO, __func__, | |
3788 | "Private key failed verification"); | |
3789 | return -1; | |
3790 | } | |
3791 | ||
3792 | return 0; | |
3793 | } | |
3794 | ||
3795 | ||
3796 | static int tls_connection_dh(struct tls_connection *conn, const char *dh_file) | |
3797 | { | |
3798 | #ifdef OPENSSL_NO_DH | |
3799 | if (dh_file == NULL) | |
3800 | return 0; | |
3801 | wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but " | |
3802 | "dh_file specified"); | |
3803 | return -1; | |
3804 | #else /* OPENSSL_NO_DH */ | |
3805 | DH *dh; | |
3806 | BIO *bio; | |
3807 | ||
3808 | /* TODO: add support for dh_blob */ | |
3809 | if (dh_file == NULL) | |
3810 | return 0; | |
3811 | if (conn == NULL) | |
3812 | return -1; | |
3813 | ||
3814 | bio = BIO_new_file(dh_file, "r"); | |
3815 | if (bio == NULL) { | |
3816 | wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s", | |
3817 | dh_file, ERR_error_string(ERR_get_error(), NULL)); | |
3818 | return -1; | |
3819 | } | |
3820 | dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); | |
3821 | BIO_free(bio); | |
3822 | #ifndef OPENSSL_NO_DSA | |
3823 | while (dh == NULL) { | |
3824 | DSA *dsa; | |
3825 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -" | |
3826 | " trying to parse as DSA params", dh_file, | |
3827 | ERR_error_string(ERR_get_error(), NULL)); | |
3828 | bio = BIO_new_file(dh_file, "r"); | |
3829 | if (bio == NULL) | |
3830 | break; | |
3831 | dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL); | |
3832 | BIO_free(bio); | |
3833 | if (!dsa) { | |
3834 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file " | |
3835 | "'%s': %s", dh_file, | |
3836 | ERR_error_string(ERR_get_error(), NULL)); | |
3837 | break; | |
3838 | } | |
3839 | ||
3840 | wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format"); | |
3841 | dh = DSA_dup_DH(dsa); | |
3842 | DSA_free(dsa); | |
3843 | if (dh == NULL) { | |
3844 | wpa_printf(MSG_INFO, "TLS: Failed to convert DSA " | |
3845 | "params into DH params"); | |
3846 | break; | |
3847 | } | |
3848 | break; | |
3849 | } | |
3850 | #endif /* !OPENSSL_NO_DSA */ | |
3851 | if (dh == NULL) { | |
3852 | wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file " | |
3853 | "'%s'", dh_file); | |
3854 | return -1; | |
3855 | } | |
3856 | ||
3857 | if (SSL_set_tmp_dh(conn->ssl, dh) != 1) { | |
3858 | wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': " | |
3859 | "%s", dh_file, | |
3860 | ERR_error_string(ERR_get_error(), NULL)); | |
3861 | DH_free(dh); | |
3862 | return -1; | |
3863 | } | |
3864 | DH_free(dh); | |
3865 | return 0; | |
3866 | #endif /* OPENSSL_NO_DH */ | |
3867 | } | |
3868 | ||
3869 | ||
bd9b8b2b | 3870 | static int tls_global_dh(struct tls_data *data, const char *dh_file) |
6fc6879b JM |
3871 | { |
3872 | #ifdef OPENSSL_NO_DH | |
3873 | if (dh_file == NULL) | |
3874 | return 0; | |
3875 | wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but " | |
3876 | "dh_file specified"); | |
3877 | return -1; | |
3878 | #else /* OPENSSL_NO_DH */ | |
bd9b8b2b | 3879 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
3880 | DH *dh; |
3881 | BIO *bio; | |
3882 | ||
3883 | /* TODO: add support for dh_blob */ | |
3884 | if (dh_file == NULL) | |
3885 | return 0; | |
3886 | if (ssl_ctx == NULL) | |
3887 | return -1; | |
3888 | ||
3889 | bio = BIO_new_file(dh_file, "r"); | |
3890 | if (bio == NULL) { | |
3891 | wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s", | |
3892 | dh_file, ERR_error_string(ERR_get_error(), NULL)); | |
3893 | return -1; | |
3894 | } | |
3895 | dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); | |
3896 | BIO_free(bio); | |
3897 | #ifndef OPENSSL_NO_DSA | |
3898 | while (dh == NULL) { | |
3899 | DSA *dsa; | |
3900 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -" | |
3901 | " trying to parse as DSA params", dh_file, | |
3902 | ERR_error_string(ERR_get_error(), NULL)); | |
3903 | bio = BIO_new_file(dh_file, "r"); | |
3904 | if (bio == NULL) | |
3905 | break; | |
3906 | dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL); | |
3907 | BIO_free(bio); | |
3908 | if (!dsa) { | |
3909 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file " | |
3910 | "'%s': %s", dh_file, | |
3911 | ERR_error_string(ERR_get_error(), NULL)); | |
3912 | break; | |
3913 | } | |
3914 | ||
3915 | wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format"); | |
3916 | dh = DSA_dup_DH(dsa); | |
3917 | DSA_free(dsa); | |
3918 | if (dh == NULL) { | |
3919 | wpa_printf(MSG_INFO, "TLS: Failed to convert DSA " | |
3920 | "params into DH params"); | |
3921 | break; | |
3922 | } | |
3923 | break; | |
3924 | } | |
3925 | #endif /* !OPENSSL_NO_DSA */ | |
3926 | if (dh == NULL) { | |
3927 | wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file " | |
3928 | "'%s'", dh_file); | |
3929 | return -1; | |
3930 | } | |
3931 | ||
3932 | if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) { | |
3933 | wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': " | |
3934 | "%s", dh_file, | |
3935 | ERR_error_string(ERR_get_error(), NULL)); | |
3936 | DH_free(dh); | |
3937 | return -1; | |
3938 | } | |
3939 | DH_free(dh); | |
3940 | return 0; | |
3941 | #endif /* OPENSSL_NO_DH */ | |
3942 | } | |
3943 | ||
3944 | ||
1046db8b JM |
3945 | int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn, |
3946 | struct tls_random *keys) | |
6fc6879b JM |
3947 | { |
3948 | SSL *ssl; | |
3949 | ||
3950 | if (conn == NULL || keys == NULL) | |
3951 | return -1; | |
3952 | ssl = conn->ssl; | |
005c5dcf JM |
3953 | if (ssl == NULL) |
3954 | return -1; | |
3955 | ||
3956 | os_memset(keys, 0, sizeof(*keys)); | |
3957 | keys->client_random = conn->client_random; | |
3958 | keys->client_random_len = SSL_get_client_random( | |
3959 | ssl, conn->client_random, sizeof(conn->client_random)); | |
3960 | keys->server_random = conn->server_random; | |
3961 | keys->server_random_len = SSL_get_server_random( | |
3962 | ssl, conn->server_random, sizeof(conn->server_random)); | |
6fc6879b JM |
3963 | |
3964 | return 0; | |
3965 | } | |
3966 | ||
3967 | ||
1cece2fa | 3968 | #ifdef OPENSSL_NEED_EAP_FAST_PRF |
af851914 JM |
3969 | static int openssl_get_keyblock_size(SSL *ssl) |
3970 | { | |
ba3658cf BS |
3971 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || \ |
3972 | (defined(LIBRESSL_VERSION_NUMBER) && \ | |
3973 | LIBRESSL_VERSION_NUMBER < 0x20700000L) | |
af851914 JM |
3974 | const EVP_CIPHER *c; |
3975 | const EVP_MD *h; | |
3976 | int md_size; | |
3977 | ||
3978 | if (ssl->enc_read_ctx == NULL || ssl->enc_read_ctx->cipher == NULL || | |
3979 | ssl->read_hash == NULL) | |
3980 | return -1; | |
3981 | ||
3982 | c = ssl->enc_read_ctx->cipher; | |
af851914 | 3983 | h = EVP_MD_CTX_md(ssl->read_hash); |
af851914 JM |
3984 | if (h) |
3985 | md_size = EVP_MD_size(h); | |
af851914 JM |
3986 | else if (ssl->s3) |
3987 | md_size = ssl->s3->tmp.new_mac_secret_size; | |
af851914 JM |
3988 | else |
3989 | return -1; | |
3990 | ||
3991 | wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d " | |
3992 | "IV_len=%d", EVP_CIPHER_key_length(c), md_size, | |
3993 | EVP_CIPHER_iv_length(c)); | |
3994 | return 2 * (EVP_CIPHER_key_length(c) + | |
3995 | md_size + | |
3996 | EVP_CIPHER_iv_length(c)); | |
3de28506 JM |
3997 | #else |
3998 | const SSL_CIPHER *ssl_cipher; | |
3999 | int cipher, digest; | |
4000 | const EVP_CIPHER *c; | |
4001 | const EVP_MD *h; | |
4002 | ||
4003 | ssl_cipher = SSL_get_current_cipher(ssl); | |
4004 | if (!ssl_cipher) | |
4005 | return -1; | |
4006 | cipher = SSL_CIPHER_get_cipher_nid(ssl_cipher); | |
4007 | digest = SSL_CIPHER_get_digest_nid(ssl_cipher); | |
4008 | wpa_printf(MSG_DEBUG, "OpenSSL: cipher nid %d digest nid %d", | |
4009 | cipher, digest); | |
4010 | if (cipher < 0 || digest < 0) | |
4011 | return -1; | |
4012 | c = EVP_get_cipherbynid(cipher); | |
4013 | h = EVP_get_digestbynid(digest); | |
4014 | if (!c || !h) | |
4015 | return -1; | |
4016 | ||
4017 | wpa_printf(MSG_DEBUG, | |
4018 | "OpenSSL: keyblock size: key_len=%d MD_size=%d IV_len=%d", | |
4019 | EVP_CIPHER_key_length(c), EVP_MD_size(h), | |
4020 | EVP_CIPHER_iv_length(c)); | |
4021 | return 2 * (EVP_CIPHER_key_length(c) + EVP_MD_size(h) + | |
4022 | EVP_CIPHER_iv_length(c)); | |
4023 | #endif | |
af851914 | 4024 | } |
1cece2fa | 4025 | #endif /* OPENSSL_NEED_EAP_FAST_PRF */ |
af851914 JM |
4026 | |
4027 | ||
73581707 | 4028 | int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn, |
a916ff5c EO |
4029 | const char *label, const u8 *context, |
4030 | size_t context_len, u8 *out, size_t out_len) | |
73581707 DB |
4031 | { |
4032 | if (!conn || | |
4033 | SSL_export_keying_material(conn->ssl, out, out_len, label, | |
a916ff5c EO |
4034 | os_strlen(label), context, context_len, |
4035 | context != NULL) != 1) | |
73581707 DB |
4036 | return -1; |
4037 | return 0; | |
4038 | } | |
4039 | ||
4040 | ||
4041 | int tls_connection_get_eap_fast_key(void *tls_ctx, struct tls_connection *conn, | |
4042 | u8 *out, size_t out_len) | |
fa0e7151 | 4043 | { |
1cece2fa | 4044 | #ifdef OPENSSL_NEED_EAP_FAST_PRF |
3de28506 JM |
4045 | SSL *ssl; |
4046 | SSL_SESSION *sess; | |
4047 | u8 *rnd; | |
4048 | int ret = -1; | |
4049 | int skip = 0; | |
4050 | u8 *tmp_out = NULL; | |
4051 | u8 *_out = out; | |
4052 | unsigned char client_random[SSL3_RANDOM_SIZE]; | |
4053 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
4054 | unsigned char master_key[64]; | |
4055 | size_t master_key_len; | |
16bc3b89 | 4056 | const char *ver; |
3de28506 JM |
4057 | |
4058 | /* | |
73581707 DB |
4059 | * TLS library did not support EAP-FAST key generation, so get the |
4060 | * needed TLS session parameters and use an internal implementation of | |
4061 | * TLS PRF to derive the key. | |
3de28506 JM |
4062 | */ |
4063 | ||
4064 | if (conn == NULL) | |
4065 | return -1; | |
4066 | ssl = conn->ssl; | |
4067 | if (ssl == NULL) | |
4068 | return -1; | |
16bc3b89 | 4069 | ver = SSL_get_version(ssl); |
3de28506 | 4070 | sess = SSL_get_session(ssl); |
16bc3b89 | 4071 | if (!ver || !sess) |
3de28506 JM |
4072 | return -1; |
4073 | ||
73581707 DB |
4074 | skip = openssl_get_keyblock_size(ssl); |
4075 | if (skip < 0) | |
4076 | return -1; | |
4077 | tmp_out = os_malloc(skip + out_len); | |
4078 | if (!tmp_out) | |
4079 | return -1; | |
4080 | _out = tmp_out; | |
3de28506 JM |
4081 | |
4082 | rnd = os_malloc(2 * SSL3_RANDOM_SIZE); | |
4083 | if (!rnd) { | |
4084 | os_free(tmp_out); | |
4085 | return -1; | |
4086 | } | |
4087 | ||
4088 | SSL_get_client_random(ssl, client_random, sizeof(client_random)); | |
4089 | SSL_get_server_random(ssl, server_random, sizeof(server_random)); | |
4090 | master_key_len = SSL_SESSION_get_master_key(sess, master_key, | |
4091 | sizeof(master_key)); | |
4092 | ||
73581707 DB |
4093 | os_memcpy(rnd, server_random, SSL3_RANDOM_SIZE); |
4094 | os_memcpy(rnd + SSL3_RANDOM_SIZE, client_random, SSL3_RANDOM_SIZE); | |
3de28506 | 4095 | |
16bc3b89 JM |
4096 | if (os_strcmp(ver, "TLSv1.2") == 0) { |
4097 | tls_prf_sha256(master_key, master_key_len, | |
73581707 | 4098 | "key expansion", rnd, 2 * SSL3_RANDOM_SIZE, |
16bc3b89 | 4099 | _out, skip + out_len); |
3de28506 | 4100 | ret = 0; |
16bc3b89 | 4101 | } else if (tls_prf_sha1_md5(master_key, master_key_len, |
73581707 | 4102 | "key expansion", rnd, 2 * SSL3_RANDOM_SIZE, |
16bc3b89 JM |
4103 | _out, skip + out_len) == 0) { |
4104 | ret = 0; | |
4105 | } | |
31bc66e4 | 4106 | forced_memzero(master_key, sizeof(master_key)); |
3de28506 | 4107 | os_free(rnd); |
73581707 | 4108 | if (ret == 0) |
3de28506 JM |
4109 | os_memcpy(out, _out + skip, out_len); |
4110 | bin_clear_free(tmp_out, skip); | |
4111 | ||
4112 | return ret; | |
1cece2fa DB |
4113 | #else /* OPENSSL_NEED_EAP_FAST_PRF */ |
4114 | wpa_printf(MSG_ERROR, | |
4115 | "OpenSSL: EAP-FAST keys cannot be exported in FIPS mode"); | |
4116 | return -1; | |
4117 | #endif /* OPENSSL_NEED_EAP_FAST_PRF */ | |
fa0e7151 JM |
4118 | } |
4119 | ||
4120 | ||
81c85c06 | 4121 | static struct wpabuf * |
53b34578 | 4122 | openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data) |
6fc6879b JM |
4123 | { |
4124 | int res; | |
81c85c06 | 4125 | struct wpabuf *out_data; |
6fc6879b JM |
4126 | |
4127 | /* | |
4128 | * Give TLS handshake data from the server (if available) to OpenSSL | |
4129 | * for processing. | |
4130 | */ | |
e9690eb7 | 4131 | if (in_data && wpabuf_len(in_data) > 0 && |
81c85c06 JM |
4132 | BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data)) |
4133 | < 0) { | |
6fc6879b JM |
4134 | tls_show_errors(MSG_INFO, __func__, |
4135 | "Handshake failed - BIO_write"); | |
4136 | return NULL; | |
4137 | } | |
4138 | ||
4139 | /* Initiate TLS handshake or continue the existing handshake */ | |
53b34578 | 4140 | if (conn->server) |
81c85c06 JM |
4141 | res = SSL_accept(conn->ssl); |
4142 | else | |
4143 | res = SSL_connect(conn->ssl); | |
6fc6879b JM |
4144 | if (res != 1) { |
4145 | int err = SSL_get_error(conn->ssl, res); | |
4146 | if (err == SSL_ERROR_WANT_READ) | |
4147 | wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want " | |
4148 | "more data"); | |
4149 | else if (err == SSL_ERROR_WANT_WRITE) | |
4150 | wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to " | |
4151 | "write"); | |
4152 | else { | |
4153 | tls_show_errors(MSG_INFO, __func__, "SSL_connect"); | |
4154 | conn->failed++; | |
53b34578 | 4155 | if (!conn->server && !conn->client_hello_generated) { |
4a576c47 JM |
4156 | /* The server would not understand TLS Alert |
4157 | * before ClientHello, so simply terminate | |
4158 | * handshake on this type of error case caused | |
4159 | * by a likely internal error like no ciphers | |
4160 | * available. */ | |
4161 | wpa_printf(MSG_DEBUG, | |
4162 | "OpenSSL: Could not generate ClientHello"); | |
4163 | conn->write_alerts++; | |
4164 | return NULL; | |
4165 | } | |
6fc6879b JM |
4166 | } |
4167 | } | |
4168 | ||
53b34578 | 4169 | if (!conn->server && !conn->failed) |
4a576c47 JM |
4170 | conn->client_hello_generated = 1; |
4171 | ||
1c9663cf | 4172 | #ifdef CONFIG_SUITEB |
53b34578 | 4173 | if ((conn->flags & TLS_CONN_SUITEB) && !conn->server && |
1c9663cf JM |
4174 | os_strncmp(SSL_get_cipher(conn->ssl), "DHE-", 4) == 0 && |
4175 | conn->server_dh_prime_len < 3072) { | |
4176 | struct tls_context *context = conn->context; | |
4177 | ||
4178 | /* | |
4179 | * This should not be reached since earlier cert_cb should have | |
4180 | * terminated the handshake. Keep this check here for extra | |
4181 | * protection if anything goes wrong with the more low-level | |
4182 | * checks based on having to parse the TLS handshake messages. | |
4183 | */ | |
4184 | wpa_printf(MSG_DEBUG, | |
4185 | "OpenSSL: Server DH prime length: %d bits", | |
4186 | conn->server_dh_prime_len); | |
4187 | ||
4188 | if (context->event_cb) { | |
4189 | union tls_event_data ev; | |
4190 | ||
4191 | os_memset(&ev, 0, sizeof(ev)); | |
4192 | ev.alert.is_local = 1; | |
4193 | ev.alert.type = "fatal"; | |
4194 | ev.alert.description = "insufficient security"; | |
4195 | context->event_cb(context->cb_ctx, TLS_ALERT, &ev); | |
4196 | } | |
4197 | /* | |
4198 | * Could send a TLS Alert to the server, but for now, simply | |
4199 | * terminate handshake. | |
4200 | */ | |
4201 | conn->failed++; | |
4202 | conn->write_alerts++; | |
4203 | return NULL; | |
4204 | } | |
4205 | #endif /* CONFIG_SUITEB */ | |
4206 | ||
6fc6879b JM |
4207 | /* Get the TLS handshake data to be sent to the server */ |
4208 | res = BIO_ctrl_pending(conn->ssl_out); | |
4209 | wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res); | |
81c85c06 | 4210 | out_data = wpabuf_alloc(res); |
6fc6879b JM |
4211 | if (out_data == NULL) { |
4212 | wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for " | |
4213 | "handshake output (%d bytes)", res); | |
4214 | if (BIO_reset(conn->ssl_out) < 0) { | |
4215 | tls_show_errors(MSG_INFO, __func__, | |
4216 | "BIO_reset failed"); | |
4217 | } | |
6fc6879b JM |
4218 | return NULL; |
4219 | } | |
81c85c06 JM |
4220 | res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data), |
4221 | res); | |
6fc6879b JM |
4222 | if (res < 0) { |
4223 | tls_show_errors(MSG_INFO, __func__, | |
4224 | "Handshake failed - BIO_read"); | |
4225 | if (BIO_reset(conn->ssl_out) < 0) { | |
4226 | tls_show_errors(MSG_INFO, __func__, | |
4227 | "BIO_reset failed"); | |
4228 | } | |
81c85c06 | 4229 | wpabuf_free(out_data); |
6fc6879b JM |
4230 | return NULL; |
4231 | } | |
81c85c06 | 4232 | wpabuf_put(out_data, res); |
6fc6879b JM |
4233 | |
4234 | return out_data; | |
4235 | } | |
4236 | ||
4237 | ||
81c85c06 JM |
4238 | static struct wpabuf * |
4239 | openssl_get_appl_data(struct tls_connection *conn, size_t max_len) | |
6fc6879b | 4240 | { |
81c85c06 | 4241 | struct wpabuf *appl_data; |
6fc6879b | 4242 | int res; |
6fc6879b | 4243 | |
81c85c06 JM |
4244 | appl_data = wpabuf_alloc(max_len + 100); |
4245 | if (appl_data == NULL) | |
6fc6879b | 4246 | return NULL; |
6fc6879b | 4247 | |
81c85c06 JM |
4248 | res = SSL_read(conn->ssl, wpabuf_mhead(appl_data), |
4249 | wpabuf_size(appl_data)); | |
4250 | if (res < 0) { | |
bf206cad | 4251 | int err = SSL_get_error(conn->ssl, res); |
81c85c06 JM |
4252 | if (err == SSL_ERROR_WANT_READ || |
4253 | err == SSL_ERROR_WANT_WRITE) { | |
4254 | wpa_printf(MSG_DEBUG, "SSL: No Application Data " | |
4255 | "included"); | |
4256 | } else { | |
6fc6879b | 4257 | tls_show_errors(MSG_INFO, __func__, |
81c85c06 JM |
4258 | "Failed to read possible " |
4259 | "Application Data"); | |
6fc6879b | 4260 | } |
81c85c06 | 4261 | wpabuf_free(appl_data); |
6fc6879b JM |
4262 | return NULL; |
4263 | } | |
81c85c06 JM |
4264 | |
4265 | wpabuf_put(appl_data, res); | |
4266 | wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished " | |
4267 | "message", appl_data); | |
4268 | ||
4269 | return appl_data; | |
4270 | } | |
4271 | ||
4272 | ||
4273 | static struct wpabuf * | |
4274 | openssl_connection_handshake(struct tls_connection *conn, | |
4275 | const struct wpabuf *in_data, | |
53b34578 | 4276 | struct wpabuf **appl_data) |
81c85c06 JM |
4277 | { |
4278 | struct wpabuf *out_data; | |
4279 | ||
4280 | if (appl_data) | |
4281 | *appl_data = NULL; | |
4282 | ||
53b34578 | 4283 | out_data = openssl_handshake(conn, in_data); |
81c85c06 | 4284 | if (out_data == NULL) |
6fc6879b | 4285 | return NULL; |
bb52293e JM |
4286 | if (conn->invalid_hb_used) { |
4287 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
4288 | wpabuf_free(out_data); | |
4289 | return NULL; | |
4290 | } | |
81c85c06 | 4291 | |
a89beee5 JM |
4292 | if (SSL_is_init_finished(conn->ssl)) { |
4293 | wpa_printf(MSG_DEBUG, | |
4294 | "OpenSSL: Handshake finished - resumed=%d", | |
4295 | tls_connection_resumed(conn->ssl_ctx, conn)); | |
857edf4b JM |
4296 | if (conn->server) { |
4297 | char *buf; | |
4298 | size_t buflen = 2000; | |
4299 | ||
4300 | buf = os_malloc(buflen); | |
4301 | if (buf) { | |
4302 | if (SSL_get_shared_ciphers(conn->ssl, buf, | |
4303 | buflen)) { | |
4304 | buf[buflen - 1] = '\0'; | |
4305 | wpa_printf(MSG_DEBUG, | |
4306 | "OpenSSL: Shared ciphers: %s", | |
4307 | buf); | |
4308 | } | |
4309 | os_free(buf); | |
4310 | } | |
4311 | } | |
a89beee5 JM |
4312 | if (appl_data && in_data) |
4313 | *appl_data = openssl_get_appl_data(conn, | |
4314 | wpabuf_len(in_data)); | |
4315 | } | |
81c85c06 | 4316 | |
bb52293e JM |
4317 | if (conn->invalid_hb_used) { |
4318 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
4319 | if (appl_data) { | |
4320 | wpabuf_free(*appl_data); | |
4321 | *appl_data = NULL; | |
4322 | } | |
4323 | wpabuf_free(out_data); | |
4324 | return NULL; | |
4325 | } | |
4326 | ||
6fc6879b JM |
4327 | return out_data; |
4328 | } | |
4329 | ||
4330 | ||
81c85c06 JM |
4331 | struct wpabuf * |
4332 | tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn, | |
4333 | const struct wpabuf *in_data, | |
4334 | struct wpabuf **appl_data) | |
4335 | { | |
53b34578 | 4336 | return openssl_connection_handshake(conn, in_data, appl_data); |
81c85c06 JM |
4337 | } |
4338 | ||
4339 | ||
4340 | struct wpabuf * tls_connection_server_handshake(void *tls_ctx, | |
4341 | struct tls_connection *conn, | |
4342 | const struct wpabuf *in_data, | |
4343 | struct wpabuf **appl_data) | |
4344 | { | |
53b34578 JM |
4345 | conn->server = 1; |
4346 | return openssl_connection_handshake(conn, in_data, appl_data); | |
81c85c06 JM |
4347 | } |
4348 | ||
4349 | ||
4350 | struct wpabuf * tls_connection_encrypt(void *tls_ctx, | |
4351 | struct tls_connection *conn, | |
4352 | const struct wpabuf *in_data) | |
6fc6879b JM |
4353 | { |
4354 | int res; | |
81c85c06 | 4355 | struct wpabuf *buf; |
6fc6879b JM |
4356 | |
4357 | if (conn == NULL) | |
81c85c06 | 4358 | return NULL; |
6fc6879b JM |
4359 | |
4360 | /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */ | |
4361 | if ((res = BIO_reset(conn->ssl_in)) < 0 || | |
4362 | (res = BIO_reset(conn->ssl_out)) < 0) { | |
4363 | tls_show_errors(MSG_INFO, __func__, "BIO_reset failed"); | |
81c85c06 | 4364 | return NULL; |
6fc6879b | 4365 | } |
81c85c06 | 4366 | res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data)); |
6fc6879b JM |
4367 | if (res < 0) { |
4368 | tls_show_errors(MSG_INFO, __func__, | |
4369 | "Encryption failed - SSL_write"); | |
81c85c06 | 4370 | return NULL; |
6fc6879b JM |
4371 | } |
4372 | ||
4373 | /* Read encrypted data to be sent to the server */ | |
81c85c06 JM |
4374 | buf = wpabuf_alloc(wpabuf_len(in_data) + 300); |
4375 | if (buf == NULL) | |
4376 | return NULL; | |
4377 | res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf)); | |
6fc6879b JM |
4378 | if (res < 0) { |
4379 | tls_show_errors(MSG_INFO, __func__, | |
4380 | "Encryption failed - BIO_read"); | |
81c85c06 JM |
4381 | wpabuf_free(buf); |
4382 | return NULL; | |
6fc6879b | 4383 | } |
81c85c06 | 4384 | wpabuf_put(buf, res); |
6fc6879b | 4385 | |
81c85c06 | 4386 | return buf; |
6fc6879b JM |
4387 | } |
4388 | ||
4389 | ||
81c85c06 JM |
4390 | struct wpabuf * tls_connection_decrypt(void *tls_ctx, |
4391 | struct tls_connection *conn, | |
4392 | const struct wpabuf *in_data) | |
6fc6879b JM |
4393 | { |
4394 | int res; | |
81c85c06 | 4395 | struct wpabuf *buf; |
6fc6879b JM |
4396 | |
4397 | /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */ | |
81c85c06 JM |
4398 | res = BIO_write(conn->ssl_in, wpabuf_head(in_data), |
4399 | wpabuf_len(in_data)); | |
6fc6879b JM |
4400 | if (res < 0) { |
4401 | tls_show_errors(MSG_INFO, __func__, | |
4402 | "Decryption failed - BIO_write"); | |
81c85c06 | 4403 | return NULL; |
6fc6879b JM |
4404 | } |
4405 | if (BIO_reset(conn->ssl_out) < 0) { | |
4406 | tls_show_errors(MSG_INFO, __func__, "BIO_reset failed"); | |
81c85c06 | 4407 | return NULL; |
6fc6879b JM |
4408 | } |
4409 | ||
4410 | /* Read decrypted data for further processing */ | |
81c85c06 JM |
4411 | /* |
4412 | * Even though we try to disable TLS compression, it is possible that | |
4413 | * this cannot be done with all TLS libraries. Add extra buffer space | |
4414 | * to handle the possibility of the decrypted data being longer than | |
4415 | * input data. | |
4416 | */ | |
4417 | buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3); | |
4418 | if (buf == NULL) | |
4419 | return NULL; | |
4420 | res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf)); | |
6fc6879b JM |
4421 | if (res < 0) { |
4422 | tls_show_errors(MSG_INFO, __func__, | |
4423 | "Decryption failed - SSL_read"); | |
a86a7316 | 4424 | wpabuf_free(buf); |
81c85c06 | 4425 | return NULL; |
6fc6879b | 4426 | } |
81c85c06 | 4427 | wpabuf_put(buf, res); |
6fc6879b | 4428 | |
bb52293e JM |
4429 | if (conn->invalid_hb_used) { |
4430 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
4431 | wpabuf_free(buf); | |
4432 | return NULL; | |
4433 | } | |
4434 | ||
81c85c06 | 4435 | return buf; |
6fc6879b JM |
4436 | } |
4437 | ||
4438 | ||
4439 | int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn) | |
4440 | { | |
373c7969 | 4441 | return conn ? SSL_session_reused(conn->ssl) : 0; |
6fc6879b JM |
4442 | } |
4443 | ||
4444 | ||
4445 | int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn, | |
4446 | u8 *ciphers) | |
4447 | { | |
750f5d99 | 4448 | char buf[500], *pos, *end; |
6fc6879b JM |
4449 | u8 *c; |
4450 | int ret; | |
4451 | ||
4452 | if (conn == NULL || conn->ssl == NULL || ciphers == NULL) | |
4453 | return -1; | |
4454 | ||
4455 | buf[0] = '\0'; | |
4456 | pos = buf; | |
4457 | end = pos + sizeof(buf); | |
4458 | ||
4459 | c = ciphers; | |
4460 | while (*c != TLS_CIPHER_NONE) { | |
4461 | const char *suite; | |
4462 | ||
4463 | switch (*c) { | |
4464 | case TLS_CIPHER_RC4_SHA: | |
4465 | suite = "RC4-SHA"; | |
4466 | break; | |
4467 | case TLS_CIPHER_AES128_SHA: | |
4468 | suite = "AES128-SHA"; | |
4469 | break; | |
4470 | case TLS_CIPHER_RSA_DHE_AES128_SHA: | |
4471 | suite = "DHE-RSA-AES128-SHA"; | |
4472 | break; | |
4473 | case TLS_CIPHER_ANON_DH_AES128_SHA: | |
4474 | suite = "ADH-AES128-SHA"; | |
4475 | break; | |
750f5d99 JM |
4476 | case TLS_CIPHER_RSA_DHE_AES256_SHA: |
4477 | suite = "DHE-RSA-AES256-SHA"; | |
4478 | break; | |
4479 | case TLS_CIPHER_AES256_SHA: | |
4480 | suite = "AES256-SHA"; | |
4481 | break; | |
6fc6879b JM |
4482 | default: |
4483 | wpa_printf(MSG_DEBUG, "TLS: Unsupported " | |
4484 | "cipher selection: %d", *c); | |
4485 | return -1; | |
4486 | } | |
4487 | ret = os_snprintf(pos, end - pos, ":%s", suite); | |
d85e1fc8 | 4488 | if (os_snprintf_error(end - pos, ret)) |
6fc6879b JM |
4489 | break; |
4490 | pos += ret; | |
4491 | ||
4492 | c++; | |
4493 | } | |
063d28ec JM |
4494 | if (!buf[0]) { |
4495 | wpa_printf(MSG_DEBUG, "OpenSSL: No ciphers listed"); | |
4496 | return -1; | |
4497 | } | |
6fc6879b JM |
4498 | |
4499 | wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1); | |
4500 | ||
36e82060 | 4501 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER) |
0ed57c5e | 4502 | #ifdef EAP_FAST_OR_TEAP |
c34cd668 JM |
4503 | if (os_strstr(buf, ":ADH-")) { |
4504 | /* | |
4505 | * Need to drop to security level 0 to allow anonymous | |
4506 | * cipher suites for EAP-FAST. | |
4507 | */ | |
4508 | SSL_set_security_level(conn->ssl, 0); | |
4509 | } else if (SSL_get_security_level(conn->ssl) == 0) { | |
4510 | /* Force at least security level 1 */ | |
4511 | SSL_set_security_level(conn->ssl, 1); | |
4512 | } | |
0ed57c5e | 4513 | #endif /* EAP_FAST_OR_TEAP */ |
c34cd668 JM |
4514 | #endif |
4515 | ||
6fc6879b JM |
4516 | if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) { |
4517 | tls_show_errors(MSG_INFO, __func__, | |
4518 | "Cipher suite configuration failed"); | |
4519 | return -1; | |
4520 | } | |
4521 | ||
4522 | return 0; | |
4523 | } | |
4524 | ||
4525 | ||
fe1bf329 JM |
4526 | int tls_get_version(void *ssl_ctx, struct tls_connection *conn, |
4527 | char *buf, size_t buflen) | |
4528 | { | |
4529 | const char *name; | |
4530 | if (conn == NULL || conn->ssl == NULL) | |
4531 | return -1; | |
4532 | ||
4533 | name = SSL_get_version(conn->ssl); | |
4534 | if (name == NULL) | |
4535 | return -1; | |
4536 | ||
4537 | os_strlcpy(buf, name, buflen); | |
4538 | return 0; | |
4539 | } | |
4540 | ||
4541 | ||
6fc6879b JM |
4542 | int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn, |
4543 | char *buf, size_t buflen) | |
4544 | { | |
4545 | const char *name; | |
4546 | if (conn == NULL || conn->ssl == NULL) | |
4547 | return -1; | |
4548 | ||
4549 | name = SSL_get_cipher(conn->ssl); | |
4550 | if (name == NULL) | |
4551 | return -1; | |
4552 | ||
4553 | os_strlcpy(buf, name, buflen); | |
4554 | return 0; | |
4555 | } | |
4556 | ||
4557 | ||
4558 | int tls_connection_enable_workaround(void *ssl_ctx, | |
4559 | struct tls_connection *conn) | |
4560 | { | |
4561 | SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS); | |
4562 | ||
4563 | return 0; | |
4564 | } | |
4565 | ||
4566 | ||
0ed57c5e | 4567 | #ifdef EAP_FAST_OR_TEAP |
6fc6879b JM |
4568 | /* ClientHello TLS extensions require a patch to openssl, so this function is |
4569 | * commented out unless explicitly needed for EAP-FAST in order to be able to | |
4570 | * build this file with unmodified openssl. */ | |
4571 | int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn, | |
4572 | int ext_type, const u8 *data, | |
4573 | size_t data_len) | |
4574 | { | |
0cf03892 | 4575 | if (conn == NULL || conn->ssl == NULL || ext_type != 35) |
6fc6879b JM |
4576 | return -1; |
4577 | ||
0cf03892 JM |
4578 | if (SSL_set_session_ticket_ext(conn->ssl, (void *) data, |
4579 | data_len) != 1) | |
4580 | return -1; | |
6fc6879b JM |
4581 | |
4582 | return 0; | |
4583 | } | |
0ed57c5e | 4584 | #endif /* EAP_FAST_OR_TEAP */ |
6fc6879b JM |
4585 | |
4586 | ||
4587 | int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn) | |
4588 | { | |
4589 | if (conn == NULL) | |
4590 | return -1; | |
4591 | return conn->failed; | |
4592 | } | |
4593 | ||
4594 | ||
4595 | int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn) | |
4596 | { | |
4597 | if (conn == NULL) | |
4598 | return -1; | |
4599 | return conn->read_alerts; | |
4600 | } | |
4601 | ||
4602 | ||
4603 | int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn) | |
4604 | { | |
4605 | if (conn == NULL) | |
4606 | return -1; | |
4607 | return conn->write_alerts; | |
4608 | } | |
4609 | ||
4610 | ||
080585c0 JM |
4611 | #ifdef HAVE_OCSP |
4612 | ||
4613 | static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp) | |
4614 | { | |
4615 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
080585c0 JM |
4616 | BIO *out; |
4617 | size_t rlen; | |
4618 | char *txt; | |
4619 | int res; | |
4620 | ||
4621 | if (wpa_debug_level > MSG_DEBUG) | |
4622 | return; | |
4623 | ||
4624 | out = BIO_new(BIO_s_mem()); | |
4625 | if (!out) | |
4626 | return; | |
4627 | ||
4628 | OCSP_RESPONSE_print(out, rsp, 0); | |
4629 | rlen = BIO_ctrl_pending(out); | |
4630 | txt = os_malloc(rlen + 1); | |
4631 | if (!txt) { | |
4632 | BIO_free(out); | |
4633 | return; | |
4634 | } | |
4635 | ||
4636 | res = BIO_read(out, txt, rlen); | |
4637 | if (res > 0) { | |
4638 | txt[res] = '\0'; | |
4639 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt); | |
4640 | } | |
4641 | os_free(txt); | |
4642 | BIO_free(out); | |
4643 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
4644 | } | |
4645 | ||
4646 | ||
4eb3b76b JM |
4647 | static void debug_print_cert(X509 *cert, const char *title) |
4648 | { | |
4649 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
4650 | BIO *out; | |
4651 | size_t rlen; | |
4652 | char *txt; | |
4653 | int res; | |
4654 | ||
4655 | if (wpa_debug_level > MSG_DEBUG) | |
4656 | return; | |
4657 | ||
4658 | out = BIO_new(BIO_s_mem()); | |
4659 | if (!out) | |
4660 | return; | |
4661 | ||
4662 | X509_print(out, cert); | |
4663 | rlen = BIO_ctrl_pending(out); | |
4664 | txt = os_malloc(rlen + 1); | |
4665 | if (!txt) { | |
4666 | BIO_free(out); | |
4667 | return; | |
4668 | } | |
4669 | ||
4670 | res = BIO_read(out, txt, rlen); | |
4671 | if (res > 0) { | |
4672 | txt[res] = '\0'; | |
4673 | wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt); | |
4674 | } | |
4675 | os_free(txt); | |
4676 | ||
4677 | BIO_free(out); | |
4678 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
4679 | } | |
4680 | ||
4681 | ||
080585c0 JM |
4682 | static int ocsp_resp_cb(SSL *s, void *arg) |
4683 | { | |
4684 | struct tls_connection *conn = arg; | |
4685 | const unsigned char *p; | |
85cff4b0 | 4686 | int len, status, reason, res; |
080585c0 JM |
4687 | OCSP_RESPONSE *rsp; |
4688 | OCSP_BASICRESP *basic; | |
4689 | OCSP_CERTID *id; | |
4690 | ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update; | |
6bf61fb2 JM |
4691 | X509_STORE *store; |
4692 | STACK_OF(X509) *certs = NULL; | |
080585c0 JM |
4693 | |
4694 | len = SSL_get_tlsext_status_ocsp_resp(s, &p); | |
4695 | if (!p) { | |
4696 | wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received"); | |
4697 | return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1; | |
4698 | } | |
4699 | ||
4700 | wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len); | |
4701 | ||
4702 | rsp = d2i_OCSP_RESPONSE(NULL, &p, len); | |
4703 | if (!rsp) { | |
4704 | wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response"); | |
4705 | return 0; | |
4706 | } | |
4707 | ||
4708 | ocsp_debug_print_resp(rsp); | |
4709 | ||
4710 | status = OCSP_response_status(rsp); | |
4711 | if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) { | |
4712 | wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)", | |
4713 | status, OCSP_response_status_str(status)); | |
4714 | return 0; | |
4715 | } | |
4716 | ||
4717 | basic = OCSP_response_get1_basic(rsp); | |
4718 | if (!basic) { | |
4719 | wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse"); | |
4720 | return 0; | |
4721 | } | |
4722 | ||
68ae4773 | 4723 | store = SSL_CTX_get_cert_store(conn->ssl_ctx); |
6bf61fb2 | 4724 | if (conn->peer_issuer) { |
4eb3b76b | 4725 | debug_print_cert(conn->peer_issuer, "Add OCSP issuer"); |
6bf61fb2 JM |
4726 | |
4727 | if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) { | |
4728 | tls_show_errors(MSG_INFO, __func__, | |
58d405fc | 4729 | "OpenSSL: Could not add issuer to certificate store"); |
6bf61fb2 JM |
4730 | } |
4731 | certs = sk_X509_new_null(); | |
4732 | if (certs) { | |
4733 | X509 *cert; | |
4734 | cert = X509_dup(conn->peer_issuer); | |
4735 | if (cert && !sk_X509_push(certs, cert)) { | |
4736 | tls_show_errors( | |
4737 | MSG_INFO, __func__, | |
58d405fc | 4738 | "OpenSSL: Could not add issuer to OCSP responder trust store"); |
6bf61fb2 JM |
4739 | X509_free(cert); |
4740 | sk_X509_free(certs); | |
4741 | certs = NULL; | |
4742 | } | |
710dfb4e | 4743 | if (certs && conn->peer_issuer_issuer) { |
6bf61fb2 JM |
4744 | cert = X509_dup(conn->peer_issuer_issuer); |
4745 | if (cert && !sk_X509_push(certs, cert)) { | |
4746 | tls_show_errors( | |
4747 | MSG_INFO, __func__, | |
58d405fc | 4748 | "OpenSSL: Could not add issuer's issuer to OCSP responder trust store"); |
6bf61fb2 JM |
4749 | X509_free(cert); |
4750 | } | |
4751 | } | |
4752 | } | |
4753 | } | |
4754 | ||
4755 | status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER); | |
4756 | sk_X509_pop_free(certs, X509_free); | |
080585c0 JM |
4757 | if (status <= 0) { |
4758 | tls_show_errors(MSG_INFO, __func__, | |
4759 | "OpenSSL: OCSP response failed verification"); | |
4760 | OCSP_BASICRESP_free(basic); | |
4761 | OCSP_RESPONSE_free(rsp); | |
4762 | return 0; | |
4763 | } | |
4764 | ||
4765 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded"); | |
4766 | ||
762c92a4 JM |
4767 | if (!conn->peer_cert) { |
4768 | wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check"); | |
4769 | OCSP_BASICRESP_free(basic); | |
4770 | OCSP_RESPONSE_free(rsp); | |
4771 | return 0; | |
4772 | } | |
4773 | ||
4774 | if (!conn->peer_issuer) { | |
4775 | wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check"); | |
080585c0 JM |
4776 | OCSP_BASICRESP_free(basic); |
4777 | OCSP_RESPONSE_free(rsp); | |
4778 | return 0; | |
4779 | } | |
4780 | ||
85cff4b0 | 4781 | id = OCSP_cert_to_id(EVP_sha256(), conn->peer_cert, conn->peer_issuer); |
080585c0 | 4782 | if (!id) { |
85cff4b0 JM |
4783 | wpa_printf(MSG_DEBUG, |
4784 | "OpenSSL: Could not create OCSP certificate identifier (SHA256)"); | |
080585c0 JM |
4785 | OCSP_BASICRESP_free(basic); |
4786 | OCSP_RESPONSE_free(rsp); | |
4787 | return 0; | |
4788 | } | |
4789 | ||
85cff4b0 JM |
4790 | res = OCSP_resp_find_status(basic, id, &status, &reason, &produced_at, |
4791 | &this_update, &next_update); | |
4792 | if (!res) { | |
e3b39e62 | 4793 | OCSP_CERTID_free(id); |
85cff4b0 JM |
4794 | id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer); |
4795 | if (!id) { | |
4796 | wpa_printf(MSG_DEBUG, | |
4797 | "OpenSSL: Could not create OCSP certificate identifier (SHA1)"); | |
4798 | OCSP_BASICRESP_free(basic); | |
4799 | OCSP_RESPONSE_free(rsp); | |
4800 | return 0; | |
4801 | } | |
4802 | ||
4803 | res = OCSP_resp_find_status(basic, id, &status, &reason, | |
4804 | &produced_at, &this_update, | |
4805 | &next_update); | |
4806 | } | |
4807 | ||
4808 | if (!res) { | |
080585c0 JM |
4809 | wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s", |
4810 | (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" : | |
4811 | " (OCSP not required)"); | |
d9a0f697 | 4812 | OCSP_CERTID_free(id); |
080585c0 JM |
4813 | OCSP_BASICRESP_free(basic); |
4814 | OCSP_RESPONSE_free(rsp); | |
4815 | return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1; | |
4816 | } | |
d9a0f697 | 4817 | OCSP_CERTID_free(id); |
080585c0 JM |
4818 | |
4819 | if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) { | |
4820 | tls_show_errors(MSG_INFO, __func__, | |
4821 | "OpenSSL: OCSP status times invalid"); | |
4822 | OCSP_BASICRESP_free(basic); | |
4823 | OCSP_RESPONSE_free(rsp); | |
4824 | return 0; | |
4825 | } | |
4826 | ||
4827 | OCSP_BASICRESP_free(basic); | |
4828 | OCSP_RESPONSE_free(rsp); | |
4829 | ||
4830 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s", | |
4831 | OCSP_cert_status_str(status)); | |
4832 | ||
4833 | if (status == V_OCSP_CERTSTATUS_GOOD) | |
4834 | return 1; | |
4835 | if (status == V_OCSP_CERTSTATUS_REVOKED) | |
4836 | return 0; | |
4837 | if (conn->flags & TLS_CONN_REQUIRE_OCSP) { | |
4838 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required"); | |
4839 | return 0; | |
4840 | } | |
be7963b3 | 4841 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue"); |
080585c0 JM |
4842 | return 1; |
4843 | } | |
4844 | ||
4845 | ||
4846 | static int ocsp_status_cb(SSL *s, void *arg) | |
4847 | { | |
4848 | char *tmp; | |
4849 | char *resp; | |
4850 | size_t len; | |
4851 | ||
4852 | if (tls_global->ocsp_stapling_response == NULL) { | |
4853 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured"); | |
4854 | return SSL_TLSEXT_ERR_OK; | |
4855 | } | |
4856 | ||
4857 | resp = os_readfile(tls_global->ocsp_stapling_response, &len); | |
4858 | if (resp == NULL) { | |
4859 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file"); | |
4860 | /* TODO: Build OCSPResponse with responseStatus = internalError | |
4861 | */ | |
4862 | return SSL_TLSEXT_ERR_OK; | |
4863 | } | |
4864 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response"); | |
4865 | tmp = OPENSSL_malloc(len); | |
4866 | if (tmp == NULL) { | |
4867 | os_free(resp); | |
4868 | return SSL_TLSEXT_ERR_ALERT_FATAL; | |
4869 | } | |
4870 | ||
4871 | os_memcpy(tmp, resp, len); | |
4872 | os_free(resp); | |
4873 | SSL_set_tlsext_status_ocsp_resp(s, tmp, len); | |
4874 | ||
4875 | return SSL_TLSEXT_ERR_OK; | |
4876 | } | |
4877 | ||
4878 | #endif /* HAVE_OCSP */ | |
4879 | ||
4880 | ||
6fc6879b JM |
4881 | int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn, |
4882 | const struct tls_connection_params *params) | |
4883 | { | |
bd9b8b2b | 4884 | struct tls_data *data = tls_ctx; |
6fc6879b JM |
4885 | int ret; |
4886 | unsigned long err; | |
96955192 | 4887 | int can_pkcs11 = 0; |
01b0d1d5 DW |
4888 | const char *key_id = params->key_id; |
4889 | const char *cert_id = params->cert_id; | |
4890 | const char *ca_cert_id = params->ca_cert_id; | |
96955192 | 4891 | const char *engine_id = params->engine ? params->engine_id : NULL; |
7a47f34b | 4892 | const char *ciphers; |
6fc6879b JM |
4893 | |
4894 | if (conn == NULL) | |
4895 | return -1; | |
4896 | ||
d6b536f7 JM |
4897 | if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) { |
4898 | wpa_printf(MSG_INFO, | |
4899 | "OpenSSL: ocsp=3 not supported"); | |
4900 | return -1; | |
4901 | } | |
4902 | ||
01b0d1d5 | 4903 | /* |
96955192 DW |
4904 | * If the engine isn't explicitly configured, and any of the |
4905 | * cert/key fields are actually PKCS#11 URIs, then automatically | |
4906 | * use the PKCS#11 ENGINE. | |
01b0d1d5 | 4907 | */ |
96955192 DW |
4908 | if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0) |
4909 | can_pkcs11 = 1; | |
4910 | ||
4911 | if (!key_id && params->private_key && can_pkcs11 && | |
4912 | os_strncmp(params->private_key, "pkcs11:", 7) == 0) { | |
4913 | can_pkcs11 = 2; | |
01b0d1d5 | 4914 | key_id = params->private_key; |
96955192 | 4915 | } |
01b0d1d5 | 4916 | |
96955192 DW |
4917 | if (!cert_id && params->client_cert && can_pkcs11 && |
4918 | os_strncmp(params->client_cert, "pkcs11:", 7) == 0) { | |
4919 | can_pkcs11 = 2; | |
01b0d1d5 | 4920 | cert_id = params->client_cert; |
96955192 | 4921 | } |
01b0d1d5 | 4922 | |
96955192 DW |
4923 | if (!ca_cert_id && params->ca_cert && can_pkcs11 && |
4924 | os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) { | |
4925 | can_pkcs11 = 2; | |
01b0d1d5 | 4926 | ca_cert_id = params->ca_cert; |
96955192 DW |
4927 | } |
4928 | ||
4929 | /* If we need to automatically enable the PKCS#11 ENGINE, do so. */ | |
4930 | if (can_pkcs11 == 2 && !engine_id) | |
4931 | engine_id = "pkcs11"; | |
01b0d1d5 | 4932 | |
0f56057c | 4933 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
b70d508c | 4934 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
6a31a31d JM |
4935 | if (params->flags & TLS_CONN_EAP_FAST) { |
4936 | wpa_printf(MSG_DEBUG, | |
4937 | "OpenSSL: Use TLSv1_method() for EAP-FAST"); | |
4938 | if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) { | |
4939 | tls_show_errors(MSG_INFO, __func__, | |
4940 | "Failed to set TLSv1_method() for EAP-FAST"); | |
4941 | return -1; | |
4942 | } | |
4943 | } | |
06836013 | 4944 | #endif |
b2e4074c | 4945 | #if OPENSSL_VERSION_NUMBER >= 0x10101000L |
dee566d9 | 4946 | #ifdef SSL_OP_NO_TLSv1_3 |
b2e4074c JM |
4947 | if (params->flags & TLS_CONN_EAP_FAST) { |
4948 | /* Need to disable TLS v1.3 at least for now since OpenSSL 1.1.1 | |
4949 | * refuses to start the handshake with the modified ciphersuite | |
4950 | * list (no TLS v1.3 ciphersuites included) for EAP-FAST. */ | |
4951 | wpa_printf(MSG_DEBUG, "OpenSSL: Disable TLSv1.3 for EAP-FAST"); | |
4952 | SSL_set_options(conn->ssl, SSL_OP_NO_TLSv1_3); | |
4953 | } | |
dee566d9 | 4954 | #endif /* SSL_OP_NO_TLSv1_3 */ |
b2e4074c | 4955 | #endif |
0f56057c | 4956 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
d4913c58 | 4957 | |
6fc6879b JM |
4958 | while ((err = ERR_get_error())) { |
4959 | wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s", | |
4960 | __func__, ERR_error_string(err, NULL)); | |
4961 | } | |
4962 | ||
96955192 | 4963 | if (engine_id) { |
e59c91af | 4964 | wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine"); |
96955192 | 4965 | ret = tls_engine_init(conn, engine_id, params->pin, |
01b0d1d5 | 4966 | key_id, cert_id, ca_cert_id); |
e59c91af DS |
4967 | if (ret) |
4968 | return ret; | |
4969 | } | |
6fc6879b JM |
4970 | if (tls_connection_set_subject_match(conn, |
4971 | params->subject_match, | |
01f809c7 | 4972 | params->altsubject_match, |
cebee30f | 4973 | params->suffix_match, |
841205a1 JB |
4974 | params->domain_match, |
4975 | params->check_cert_subject)) | |
6fc6879b | 4976 | return -1; |
e59c91af | 4977 | |
96955192 | 4978 | if (engine_id && ca_cert_id) { |
bd9b8b2b | 4979 | if (tls_connection_engine_ca_cert(data, conn, ca_cert_id)) |
e59c91af | 4980 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; |
bd9b8b2b | 4981 | } else if (tls_connection_ca_cert(data, conn, params->ca_cert, |
e59c91af DS |
4982 | params->ca_cert_blob, |
4983 | params->ca_cert_blob_len, | |
4984 | params->ca_path)) | |
6fc6879b | 4985 | return -1; |
e59c91af | 4986 | |
96955192 | 4987 | if (engine_id && cert_id) { |
01b0d1d5 | 4988 | if (tls_connection_engine_client_cert(conn, cert_id)) |
e59c91af DS |
4989 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; |
4990 | } else if (tls_connection_client_cert(conn, params->client_cert, | |
4991 | params->client_cert_blob, | |
4992 | params->client_cert_blob_len)) | |
6fc6879b JM |
4993 | return -1; |
4994 | ||
96955192 | 4995 | if (engine_id && key_id) { |
e59c91af | 4996 | wpa_printf(MSG_DEBUG, "TLS: Using private key from engine"); |
6fc6879b JM |
4997 | if (tls_connection_engine_private_key(conn)) |
4998 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; | |
bd9b8b2b | 4999 | } else if (tls_connection_private_key(data, conn, |
6fc6879b JM |
5000 | params->private_key, |
5001 | params->private_key_passwd, | |
5002 | params->private_key_blob, | |
5003 | params->private_key_blob_len)) { | |
5004 | wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'", | |
5005 | params->private_key); | |
5006 | return -1; | |
5007 | } | |
5008 | ||
5009 | if (tls_connection_dh(conn, params->dh_file)) { | |
5010 | wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'", | |
5011 | params->dh_file); | |
5012 | return -1; | |
5013 | } | |
5014 | ||
7a47f34b JM |
5015 | ciphers = params->openssl_ciphers; |
5016 | #ifdef CONFIG_SUITEB | |
5017 | #ifdef OPENSSL_IS_BORINGSSL | |
5018 | if (ciphers && os_strcmp(ciphers, "SUITEB192") == 0) { | |
5019 | /* BoringSSL removed support for SUITEB192, so need to handle | |
5020 | * this with hardcoded ciphersuite and additional checks for | |
5021 | * other parameters. */ | |
5022 | ciphers = "ECDHE-ECDSA-AES256-GCM-SHA384"; | |
5023 | } | |
5024 | #endif /* OPENSSL_IS_BORINGSSL */ | |
5025 | #endif /* CONFIG_SUITEB */ | |
5026 | if (ciphers && SSL_set_cipher_list(conn->ssl, ciphers) != 1) { | |
b7328434 JM |
5027 | wpa_printf(MSG_INFO, |
5028 | "OpenSSL: Failed to set cipher string '%s'", | |
7a47f34b | 5029 | ciphers); |
b7328434 JM |
5030 | return -1; |
5031 | } | |
5032 | ||
0521c6eb HV |
5033 | if (!params->openssl_ecdh_curves) { |
5034 | #ifndef OPENSSL_IS_BORINGSSL | |
5035 | #ifndef OPENSSL_NO_EC | |
5036 | #if (OPENSSL_VERSION_NUMBER >= 0x10002000L) && \ | |
5037 | (OPENSSL_VERSION_NUMBER < 0x10100000L) | |
5038 | if (SSL_set_ecdh_auto(conn->ssl, 1) != 1) { | |
5039 | wpa_printf(MSG_INFO, | |
5040 | "OpenSSL: Failed to set ECDH curves to auto"); | |
5041 | return -1; | |
5042 | } | |
5043 | #endif /* >= 1.0.2 && < 1.1.0 */ | |
5044 | #endif /* OPENSSL_NO_EC */ | |
5045 | #endif /* OPENSSL_IS_BORINGSSL */ | |
5046 | } else if (params->openssl_ecdh_curves[0]) { | |
5047 | #if defined(OPENSSL_IS_BORINGSSL) || (OPENSSL_VERSION_NUMBER < 0x10002000L) | |
5048 | wpa_printf(MSG_INFO, | |
5049 | "OpenSSL: ECDH configuration nnot supported"); | |
5050 | return -1; | |
5051 | #else /* OPENSSL_IS_BORINGSSL || < 1.0.2 */ | |
5052 | #ifndef OPENSSL_NO_EC | |
5053 | if (SSL_set1_curves_list(conn->ssl, | |
5054 | params->openssl_ecdh_curves) != 1) { | |
5055 | wpa_printf(MSG_INFO, | |
5056 | "OpenSSL: Failed to set ECDH curves '%s'", | |
5057 | params->openssl_ecdh_curves); | |
5058 | return -1; | |
5059 | } | |
5060 | #else /* OPENSSL_NO_EC */ | |
5061 | wpa_printf(MSG_INFO, "OpenSSL: ECDH not supported"); | |
5062 | return -1; | |
5063 | #endif /* OPENSSL_NO_EC */ | |
5064 | #endif /* OPENSSL_IS_BORINGSSL */ | |
5065 | } | |
5066 | ||
a2c442be JM |
5067 | if (tls_set_conn_flags(conn, params->flags, |
5068 | params->openssl_ciphers) < 0) | |
60ed2f24 | 5069 | return -1; |
e9a6f183 | 5070 | |
bdee6ca0 JM |
5071 | #ifdef OPENSSL_IS_BORINGSSL |
5072 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
5073 | SSL_enable_ocsp_stapling(conn->ssl); | |
5074 | } | |
5075 | #else /* OPENSSL_IS_BORINGSSL */ | |
080585c0 JM |
5076 | #ifdef HAVE_OCSP |
5077 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
bd9b8b2b | 5078 | SSL_CTX *ssl_ctx = data->ssl; |
080585c0 JM |
5079 | SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp); |
5080 | SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb); | |
5081 | SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn); | |
5082 | } | |
355a5c8e JM |
5083 | #else /* HAVE_OCSP */ |
5084 | if (params->flags & TLS_CONN_REQUIRE_OCSP) { | |
5085 | wpa_printf(MSG_INFO, | |
5086 | "OpenSSL: No OCSP support included - reject configuration"); | |
5087 | return -1; | |
5088 | } | |
5089 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
5090 | wpa_printf(MSG_DEBUG, | |
5091 | "OpenSSL: No OCSP support included - allow optional OCSP case to continue"); | |
5092 | } | |
080585c0 | 5093 | #endif /* HAVE_OCSP */ |
bdee6ca0 | 5094 | #endif /* OPENSSL_IS_BORINGSSL */ |
080585c0 | 5095 | |
235279e7 JM |
5096 | conn->flags = params->flags; |
5097 | ||
bd9b8b2b | 5098 | tls_get_errors(data); |
6fc6879b JM |
5099 | |
5100 | return 0; | |
5101 | } | |
5102 | ||
5103 | ||
857edf4b JM |
5104 | static void openssl_debug_dump_cipher_list(SSL_CTX *ssl_ctx) |
5105 | { | |
5106 | SSL *ssl; | |
5107 | int i; | |
5108 | ||
5109 | ssl = SSL_new(ssl_ctx); | |
5110 | if (!ssl) | |
5111 | return; | |
5112 | ||
5113 | wpa_printf(MSG_DEBUG, | |
5114 | "OpenSSL: Enabled cipher suites in priority order"); | |
5115 | for (i = 0; ; i++) { | |
5116 | const char *cipher; | |
5117 | ||
5118 | cipher = SSL_get_cipher_list(ssl, i); | |
5119 | if (!cipher) | |
5120 | break; | |
5121 | wpa_printf(MSG_DEBUG, "Cipher %d: %s", i, cipher); | |
5122 | } | |
5123 | ||
5124 | SSL_free(ssl); | |
5125 | } | |
5126 | ||
5127 | ||
5128 | static const char * openssl_pkey_type_str(const EVP_PKEY *pkey) | |
5129 | { | |
5130 | if (!pkey) | |
5131 | return "NULL"; | |
5132 | switch (EVP_PKEY_type(EVP_PKEY_id(pkey))) { | |
5133 | case EVP_PKEY_RSA: | |
5134 | return "RSA"; | |
5135 | case EVP_PKEY_DSA: | |
5136 | return "DSA"; | |
5137 | case EVP_PKEY_DH: | |
5138 | return "DH"; | |
5139 | case EVP_PKEY_EC: | |
5140 | return "EC"; | |
5141 | } | |
5142 | return "?"; | |
5143 | } | |
5144 | ||
5145 | ||
5146 | static void openssl_debug_dump_certificate(int i, X509 *cert) | |
5147 | { | |
5148 | char buf[256]; | |
5149 | EVP_PKEY *pkey; | |
5150 | ASN1_INTEGER *ser; | |
5151 | char serial_num[128]; | |
5152 | ||
5153 | X509_NAME_oneline(X509_get_subject_name(cert), buf, sizeof(buf)); | |
5154 | ||
5155 | ser = X509_get_serialNumber(cert); | |
5156 | if (ser) | |
5157 | wpa_snprintf_hex_uppercase(serial_num, sizeof(serial_num), | |
5158 | ASN1_STRING_get0_data(ser), | |
5159 | ASN1_STRING_length(ser)); | |
5160 | else | |
5161 | serial_num[0] = '\0'; | |
5162 | ||
5163 | pkey = X509_get_pubkey(cert); | |
5164 | wpa_printf(MSG_DEBUG, "%d: %s (%s) %s", i, buf, | |
5165 | openssl_pkey_type_str(pkey), serial_num); | |
5166 | EVP_PKEY_free(pkey); | |
5167 | } | |
5168 | ||
5169 | ||
5170 | static void openssl_debug_dump_certificates(SSL_CTX *ssl_ctx) | |
5171 | { | |
5172 | STACK_OF(X509) *certs; | |
5173 | ||
5174 | wpa_printf(MSG_DEBUG, "OpenSSL: Configured certificate chain"); | |
5175 | if (SSL_CTX_get0_chain_certs(ssl_ctx, &certs) == 1) { | |
5176 | int i; | |
5177 | ||
5178 | for (i = sk_X509_num(certs); i > 0; i--) | |
5179 | openssl_debug_dump_certificate(i, sk_X509_value(certs, | |
5180 | i - 1)); | |
5181 | } | |
5182 | openssl_debug_dump_certificate(0, SSL_CTX_get0_certificate(ssl_ctx)); | |
5183 | } | |
5184 | ||
5185 | ||
5186 | static void openssl_debug_dump_certificate_chains(SSL_CTX *ssl_ctx) | |
5187 | { | |
5188 | int res; | |
5189 | ||
5190 | for (res = SSL_CTX_set_current_cert(ssl_ctx, SSL_CERT_SET_FIRST); | |
5191 | res == 1; | |
5192 | res = SSL_CTX_set_current_cert(ssl_ctx, SSL_CERT_SET_NEXT)) | |
5193 | openssl_debug_dump_certificates(ssl_ctx); | |
5194 | ||
5195 | SSL_CTX_set_current_cert(ssl_ctx, SSL_CERT_SET_FIRST); | |
5196 | } | |
5197 | ||
5198 | ||
5199 | static void openssl_debug_dump_ctx(SSL_CTX *ssl_ctx) | |
5200 | { | |
5201 | openssl_debug_dump_cipher_list(ssl_ctx); | |
5202 | openssl_debug_dump_certificate_chains(ssl_ctx); | |
5203 | } | |
5204 | ||
5205 | ||
6fc6879b JM |
5206 | int tls_global_set_params(void *tls_ctx, |
5207 | const struct tls_connection_params *params) | |
5208 | { | |
bd9b8b2b JM |
5209 | struct tls_data *data = tls_ctx; |
5210 | SSL_CTX *ssl_ctx = data->ssl; | |
6fc6879b JM |
5211 | unsigned long err; |
5212 | ||
5213 | while ((err = ERR_get_error())) { | |
5214 | wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s", | |
5215 | __func__, ERR_error_string(err, NULL)); | |
5216 | } | |
5217 | ||
841205a1 JB |
5218 | os_free(data->check_cert_subject); |
5219 | data->check_cert_subject = NULL; | |
5220 | if (params->check_cert_subject) { | |
5221 | data->check_cert_subject = | |
5222 | os_strdup(params->check_cert_subject); | |
5223 | if (!data->check_cert_subject) | |
5224 | return -1; | |
5225 | } | |
5226 | ||
bd9b8b2b JM |
5227 | if (tls_global_ca_cert(data, params->ca_cert) || |
5228 | tls_global_client_cert(data, params->client_cert) || | |
5229 | tls_global_private_key(data, params->private_key, | |
f24b9797 | 5230 | params->private_key_passwd) || |
e2722bf8 JM |
5231 | tls_global_client_cert(data, params->client_cert2) || |
5232 | tls_global_private_key(data, params->private_key2, | |
5233 | params->private_key_passwd2) || | |
bd9b8b2b | 5234 | tls_global_dh(data, params->dh_file)) { |
f24b9797 | 5235 | wpa_printf(MSG_INFO, "TLS: Failed to set global parameters"); |
6fc6879b JM |
5236 | return -1; |
5237 | } | |
5238 | ||
b7328434 JM |
5239 | if (params->openssl_ciphers && |
5240 | SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) { | |
5241 | wpa_printf(MSG_INFO, | |
5242 | "OpenSSL: Failed to set cipher string '%s'", | |
5243 | params->openssl_ciphers); | |
5244 | return -1; | |
5245 | } | |
5246 | ||
0521c6eb HV |
5247 | if (!params->openssl_ecdh_curves) { |
5248 | #ifndef OPENSSL_IS_BORINGSSL | |
5249 | #ifndef OPENSSL_NO_EC | |
5250 | #if (OPENSSL_VERSION_NUMBER >= 0x10002000L) && \ | |
5251 | (OPENSSL_VERSION_NUMBER < 0x10100000L) | |
5252 | if (SSL_CTX_set_ecdh_auto(ssl_ctx, 1) != 1) { | |
5253 | wpa_printf(MSG_INFO, | |
5254 | "OpenSSL: Failed to set ECDH curves to auto"); | |
5255 | return -1; | |
5256 | } | |
5257 | #endif /* >= 1.0.2 && < 1.1.0 */ | |
5258 | #endif /* OPENSSL_NO_EC */ | |
5259 | #endif /* OPENSSL_IS_BORINGSSL */ | |
5260 | } else if (params->openssl_ecdh_curves[0]) { | |
5261 | #if defined(OPENSSL_IS_BORINGSSL) || (OPENSSL_VERSION_NUMBER < 0x10002000L) | |
5262 | wpa_printf(MSG_INFO, | |
5263 | "OpenSSL: ECDH configuration nnot supported"); | |
5264 | return -1; | |
5265 | #else /* OPENSSL_IS_BORINGSSL || < 1.0.2 */ | |
5266 | #ifndef OPENSSL_NO_EC | |
6570949b JM |
5267 | #if OPENSSL_VERSION_NUMBER < 0x10100000L |
5268 | SSL_CTX_set_ecdh_auto(ssl_ctx, 1); | |
5269 | #endif | |
0521c6eb HV |
5270 | if (SSL_CTX_set1_curves_list(ssl_ctx, |
5271 | params->openssl_ecdh_curves) != | |
5272 | 1) { | |
5273 | wpa_printf(MSG_INFO, | |
5274 | "OpenSSL: Failed to set ECDH curves '%s'", | |
5275 | params->openssl_ecdh_curves); | |
5276 | return -1; | |
5277 | } | |
5278 | #else /* OPENSSL_NO_EC */ | |
5279 | wpa_printf(MSG_INFO, "OpenSSL: ECDH not supported"); | |
5280 | return -1; | |
5281 | #endif /* OPENSSL_NO_EC */ | |
5282 | #endif /* OPENSSL_IS_BORINGSSL */ | |
5283 | } | |
5284 | ||
e866f39f JM |
5285 | #ifdef SSL_OP_NO_TICKET |
5286 | if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET) | |
5287 | SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET); | |
5288 | else | |
5289 | SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET); | |
5290 | #endif /* SSL_OP_NO_TICKET */ | |
5291 | ||
080585c0 JM |
5292 | #ifdef HAVE_OCSP |
5293 | SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb); | |
5294 | SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx); | |
5295 | os_free(tls_global->ocsp_stapling_response); | |
5296 | if (params->ocsp_stapling_response) | |
5297 | tls_global->ocsp_stapling_response = | |
5298 | os_strdup(params->ocsp_stapling_response); | |
5299 | else | |
5300 | tls_global->ocsp_stapling_response = NULL; | |
5301 | #endif /* HAVE_OCSP */ | |
5302 | ||
857edf4b JM |
5303 | openssl_debug_dump_ctx(ssl_ctx); |
5304 | ||
6fc6879b JM |
5305 | return 0; |
5306 | } | |
5307 | ||
5308 | ||
0ed57c5e | 5309 | #ifdef EAP_FAST_OR_TEAP |
6fc6879b JM |
5310 | /* Pre-shared secred requires a patch to openssl, so this function is |
5311 | * commented out unless explicitly needed for EAP-FAST in order to be able to | |
5312 | * build this file with unmodified openssl. */ | |
5313 | ||
587b0457 | 5314 | #if (defined(OPENSSL_IS_BORINGSSL) || OPENSSL_VERSION_NUMBER >= 0x10100000L) && !defined(LIBRESSL_VERSION_NUMBER) |
a8572960 AL |
5315 | static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len, |
5316 | STACK_OF(SSL_CIPHER) *peer_ciphers, | |
5317 | const SSL_CIPHER **cipher, void *arg) | |
5318 | #else /* OPENSSL_IS_BORINGSSL */ | |
6fc6879b JM |
5319 | static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len, |
5320 | STACK_OF(SSL_CIPHER) *peer_ciphers, | |
5321 | SSL_CIPHER **cipher, void *arg) | |
a8572960 | 5322 | #endif /* OPENSSL_IS_BORINGSSL */ |
6fc6879b JM |
5323 | { |
5324 | struct tls_connection *conn = arg; | |
5325 | int ret; | |
5326 | ||
ba3658cf BS |
5327 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || \ |
5328 | (defined(LIBRESSL_VERSION_NUMBER) && \ | |
5329 | LIBRESSL_VERSION_NUMBER < 0x20700000L) | |
6fc6879b JM |
5330 | if (conn == NULL || conn->session_ticket_cb == NULL) |
5331 | return 0; | |
5332 | ||
5333 | ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx, | |
5334 | conn->session_ticket, | |
5335 | conn->session_ticket_len, | |
5336 | s->s3->client_random, | |
5337 | s->s3->server_random, secret); | |
4d2a1b4f JM |
5338 | #else |
5339 | unsigned char client_random[SSL3_RANDOM_SIZE]; | |
5340 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
5341 | ||
5342 | if (conn == NULL || conn->session_ticket_cb == NULL) | |
5343 | return 0; | |
5344 | ||
5345 | SSL_get_client_random(s, client_random, sizeof(client_random)); | |
5346 | SSL_get_server_random(s, server_random, sizeof(server_random)); | |
5347 | ||
5348 | ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx, | |
5349 | conn->session_ticket, | |
5350 | conn->session_ticket_len, | |
5351 | client_random, | |
5352 | server_random, secret); | |
5353 | #endif | |
5354 | ||
6fc6879b JM |
5355 | os_free(conn->session_ticket); |
5356 | conn->session_ticket = NULL; | |
5357 | ||
5358 | if (ret <= 0) | |
5359 | return 0; | |
5360 | ||
5361 | *secret_len = SSL_MAX_MASTER_KEY_LENGTH; | |
5362 | return 1; | |
5363 | } | |
5364 | ||
5365 | ||
0cf03892 JM |
5366 | static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data, |
5367 | int len, void *arg) | |
5368 | { | |
5369 | struct tls_connection *conn = arg; | |
5370 | ||
5371 | if (conn == NULL || conn->session_ticket_cb == NULL) | |
5372 | return 0; | |
5373 | ||
5374 | wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len); | |
5375 | ||
5376 | os_free(conn->session_ticket); | |
5377 | conn->session_ticket = NULL; | |
5378 | ||
5379 | wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket " | |
5380 | "extension", data, len); | |
5381 | ||
a1f11e34 | 5382 | conn->session_ticket = os_memdup(data, len); |
0cf03892 JM |
5383 | if (conn->session_ticket == NULL) |
5384 | return 0; | |
5385 | ||
0cf03892 JM |
5386 | conn->session_ticket_len = len; |
5387 | ||
5388 | return 1; | |
5389 | } | |
0ed57c5e | 5390 | #endif /* EAP_FAST_OR_TEAP */ |
6fc6879b JM |
5391 | |
5392 | ||
5393 | int tls_connection_set_session_ticket_cb(void *tls_ctx, | |
5394 | struct tls_connection *conn, | |
5395 | tls_session_ticket_cb cb, | |
5396 | void *ctx) | |
5397 | { | |
0ed57c5e | 5398 | #ifdef EAP_FAST_OR_TEAP |
6fc6879b JM |
5399 | conn->session_ticket_cb = cb; |
5400 | conn->session_ticket_cb_ctx = ctx; | |
5401 | ||
5402 | if (cb) { | |
5403 | if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb, | |
5404 | conn) != 1) | |
5405 | return -1; | |
0cf03892 JM |
5406 | SSL_set_session_ticket_ext_cb(conn->ssl, |
5407 | tls_session_ticket_ext_cb, conn); | |
6fc6879b JM |
5408 | } else { |
5409 | if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1) | |
5410 | return -1; | |
0cf03892 | 5411 | SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL); |
6fc6879b JM |
5412 | } |
5413 | ||
5414 | return 0; | |
0ed57c5e | 5415 | #else /* EAP_FAST_OR_TEAP */ |
6fc6879b | 5416 | return -1; |
0ed57c5e | 5417 | #endif /* EAP_FAST_OR_TEAP */ |
6fc6879b | 5418 | } |
a1651451 JM |
5419 | |
5420 | ||
5421 | int tls_get_library_version(char *buf, size_t buf_len) | |
5422 | { | |
587b0457 | 5423 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER) |
b34c623c JM |
5424 | return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s", |
5425 | OPENSSL_VERSION_TEXT, | |
5426 | OpenSSL_version(OPENSSL_VERSION)); | |
5427 | #else | |
a1651451 JM |
5428 | return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s", |
5429 | OPENSSL_VERSION_TEXT, | |
5430 | SSLeay_version(SSLEAY_VERSION)); | |
b34c623c | 5431 | #endif |
a1651451 | 5432 | } |
b3b8085a JM |
5433 | |
5434 | ||
5435 | void tls_connection_set_success_data(struct tls_connection *conn, | |
5436 | struct wpabuf *data) | |
5437 | { | |
acf36f31 JM |
5438 | SSL_SESSION *sess; |
5439 | struct wpabuf *old; | |
5440 | ||
5441 | if (tls_ex_idx_session < 0) | |
5442 | goto fail; | |
5443 | sess = SSL_get_session(conn->ssl); | |
5444 | if (!sess) | |
5445 | goto fail; | |
5446 | old = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
5447 | if (old) { | |
5448 | wpa_printf(MSG_DEBUG, "OpenSSL: Replacing old success data %p", | |
5449 | old); | |
5450 | wpabuf_free(old); | |
5451 | } | |
5452 | if (SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1) | |
5453 | goto fail; | |
5454 | ||
5455 | wpa_printf(MSG_DEBUG, "OpenSSL: Stored success data %p", data); | |
5456 | conn->success_data = 1; | |
5457 | return; | |
5458 | ||
5459 | fail: | |
5460 | wpa_printf(MSG_INFO, "OpenSSL: Failed to store success data"); | |
5461 | wpabuf_free(data); | |
b3b8085a JM |
5462 | } |
5463 | ||
5464 | ||
5465 | void tls_connection_set_success_data_resumed(struct tls_connection *conn) | |
5466 | { | |
acf36f31 JM |
5467 | wpa_printf(MSG_DEBUG, |
5468 | "OpenSSL: Success data accepted for resumed session"); | |
5469 | conn->success_data = 1; | |
b3b8085a JM |
5470 | } |
5471 | ||
5472 | ||
5473 | const struct wpabuf * | |
5474 | tls_connection_get_success_data(struct tls_connection *conn) | |
5475 | { | |
acf36f31 JM |
5476 | SSL_SESSION *sess; |
5477 | ||
5478 | if (tls_ex_idx_session < 0 || | |
5479 | !(sess = SSL_get_session(conn->ssl))) | |
5480 | return NULL; | |
5481 | return SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
b3b8085a JM |
5482 | } |
5483 | ||
5484 | ||
5485 | void tls_connection_remove_session(struct tls_connection *conn) | |
5486 | { | |
acf36f31 JM |
5487 | SSL_SESSION *sess; |
5488 | ||
5489 | sess = SSL_get_session(conn->ssl); | |
5490 | if (!sess) | |
5491 | return; | |
5492 | ||
5493 | if (SSL_CTX_remove_session(conn->ssl_ctx, sess) != 1) | |
5494 | wpa_printf(MSG_DEBUG, | |
5495 | "OpenSSL: Session was not cached"); | |
5496 | else | |
5497 | wpa_printf(MSG_DEBUG, | |
5498 | "OpenSSL: Removed cached session to disable session resumption"); | |
b3b8085a | 5499 | } |
3af37ece JM |
5500 | |
5501 | ||
5502 | int tls_get_tls_unique(struct tls_connection *conn, u8 *buf, size_t max_len) | |
5503 | { | |
5504 | size_t len; | |
5505 | int reused; | |
5506 | ||
5507 | reused = SSL_session_reused(conn->ssl); | |
5508 | if ((conn->server && !reused) || (!conn->server && reused)) | |
5509 | len = SSL_get_peer_finished(conn->ssl, buf, max_len); | |
5510 | else | |
5511 | len = SSL_get_finished(conn->ssl, buf, max_len); | |
5512 | ||
5513 | if (len == 0 || len > max_len) | |
5514 | return -1; | |
5515 | ||
5516 | return len; | |
5517 | } | |
94714ec3 JM |
5518 | |
5519 | ||
5520 | u16 tls_connection_get_cipher_suite(struct tls_connection *conn) | |
5521 | { | |
5522 | const SSL_CIPHER *cipher; | |
5523 | ||
5524 | cipher = SSL_get_current_cipher(conn->ssl); | |
5525 | if (!cipher) | |
5526 | return 0; | |
5527 | return SSL_CIPHER_get_protocol_id(cipher); | |
5528 | } |