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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> | |
21 | #include <openssl/pkcs12.h> | |
22 | #include <openssl/x509v3.h> | |
23 | #ifndef OPENSSL_NO_ENGINE | |
24 | #include <openssl/engine.h> | |
25 | #endif /* OPENSSL_NO_ENGINE */ | |
690e543e JM |
26 | #ifndef OPENSSL_NO_DSA |
27 | #include <openssl/dsa.h> | |
28 | #endif | |
29 | #ifndef OPENSSL_NO_DH | |
30 | #include <openssl/dh.h> | |
31 | #endif | |
6fc6879b JM |
32 | |
33 | #include "common.h" | |
00468b46 | 34 | #include "crypto.h" |
fa0e7151 | 35 | #include "sha1.h" |
16bc3b89 | 36 | #include "sha256.h" |
6fc6879b | 37 | #include "tls.h" |
213e158c | 38 | #include "tls_openssl.h" |
6fc6879b | 39 | |
a8572960 AL |
40 | #if defined(OPENSSL_IS_BORINGSSL) |
41 | /* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */ | |
42 | typedef size_t stack_index_t; | |
43 | #else | |
44 | typedef int stack_index_t; | |
0cf03892 JM |
45 | #endif |
46 | ||
080585c0 JM |
47 | #ifdef SSL_set_tlsext_status_type |
48 | #ifndef OPENSSL_NO_TLSEXT | |
49 | #define HAVE_OCSP | |
50 | #include <openssl/ocsp.h> | |
51 | #endif /* OPENSSL_NO_TLSEXT */ | |
52 | #endif /* SSL_set_tlsext_status_type */ | |
53 | ||
dea20519 JM |
54 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
55 | /* | |
56 | * SSL_get_client_random() and SSL_get_server_random() were added in OpenSSL | |
57 | * 1.1.0. Provide compatibility wrappers for older versions. | |
58 | */ | |
59 | ||
60 | static size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, | |
61 | size_t outlen) | |
62 | { | |
63 | if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE) | |
64 | return 0; | |
65 | os_memcpy(out, ssl->s3->client_random, SSL3_RANDOM_SIZE); | |
66 | return SSL3_RANDOM_SIZE; | |
67 | } | |
68 | ||
69 | ||
70 | static size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, | |
71 | size_t outlen) | |
72 | { | |
73 | if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE) | |
74 | return 0; | |
75 | os_memcpy(out, ssl->s3->server_random, SSL3_RANDOM_SIZE); | |
76 | return SSL3_RANDOM_SIZE; | |
77 | } | |
78 | ||
1ebb24bb JM |
79 | |
80 | static size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, | |
81 | unsigned char *out, size_t outlen) | |
82 | { | |
83 | if (!session || session->master_key_length < 0 || | |
84 | (size_t) session->master_key_length > outlen) | |
85 | return 0; | |
86 | if ((size_t) session->master_key_length < outlen) | |
87 | outlen = session->master_key_length; | |
88 | os_memcpy(out, session->master_key, outlen); | |
89 | return outlen; | |
90 | } | |
91 | ||
dea20519 JM |
92 | #endif |
93 | ||
1d415f1f KR |
94 | #ifdef ANDROID |
95 | #include <openssl/pem.h> | |
96 | #include <keystore/keystore_get.h> | |
97 | ||
98 | static BIO * BIO_from_keystore(const char *key) | |
99 | { | |
100 | BIO *bio = NULL; | |
101 | uint8_t *value = NULL; | |
102 | int length = keystore_get(key, strlen(key), &value); | |
103 | if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL) | |
104 | BIO_write(bio, value, length); | |
105 | free(value); | |
106 | return bio; | |
107 | } | |
108 | #endif /* ANDROID */ | |
109 | ||
6fc6879b | 110 | static int tls_openssl_ref_count = 0; |
acf36f31 | 111 | static int tls_ex_idx_session = -1; |
6fc6879b | 112 | |
7c0e1e27 | 113 | struct tls_context { |
00468b46 JM |
114 | void (*event_cb)(void *ctx, enum tls_event ev, |
115 | union tls_event_data *data); | |
116 | void *cb_ctx; | |
1b414f59 | 117 | int cert_in_cb; |
080585c0 | 118 | char *ocsp_stapling_response; |
00468b46 JM |
119 | }; |
120 | ||
7c0e1e27 | 121 | static struct tls_context *tls_global = NULL; |
00468b46 JM |
122 | |
123 | ||
bd9b8b2b JM |
124 | struct tls_data { |
125 | SSL_CTX *ssl; | |
acf36f31 | 126 | unsigned int tls_session_lifetime; |
bd9b8b2b JM |
127 | }; |
128 | ||
6fc6879b | 129 | struct tls_connection { |
7c0e1e27 | 130 | struct tls_context *context; |
68ae4773 | 131 | SSL_CTX *ssl_ctx; |
6fc6879b JM |
132 | SSL *ssl; |
133 | BIO *ssl_in, *ssl_out; | |
aeeb0bca | 134 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
135 | ENGINE *engine; /* functional reference to the engine */ |
136 | EVP_PKEY *private_key; /* the private key if using engine */ | |
137 | #endif /* OPENSSL_NO_ENGINE */ | |
cebee30f | 138 | char *subject_match, *altsubject_match, *suffix_match, *domain_match; |
6fc6879b JM |
139 | int read_alerts, write_alerts, failed; |
140 | ||
141 | tls_session_ticket_cb session_ticket_cb; | |
142 | void *session_ticket_cb_ctx; | |
143 | ||
144 | /* SessionTicket received from OpenSSL hello_extension_cb (server) */ | |
145 | u8 *session_ticket; | |
146 | size_t session_ticket_len; | |
00468b46 | 147 | |
8d6399e4 JM |
148 | unsigned int ca_cert_verify:1; |
149 | unsigned int cert_probe:1; | |
150 | unsigned int server_cert_only:1; | |
bb52293e | 151 | unsigned int invalid_hb_used:1; |
acf36f31 | 152 | unsigned int success_data:1; |
00468b46 JM |
153 | |
154 | u8 srv_cert_hash[32]; | |
235279e7 JM |
155 | |
156 | unsigned int flags; | |
080585c0 JM |
157 | |
158 | X509 *peer_cert; | |
159 | X509 *peer_issuer; | |
6bf61fb2 | 160 | X509 *peer_issuer_issuer; |
005c5dcf | 161 | |
005c5dcf JM |
162 | unsigned char client_random[SSL3_RANDOM_SIZE]; |
163 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
6fc6879b JM |
164 | }; |
165 | ||
166 | ||
7c0e1e27 PS |
167 | static struct tls_context * tls_context_new(const struct tls_config *conf) |
168 | { | |
169 | struct tls_context *context = os_zalloc(sizeof(*context)); | |
170 | if (context == NULL) | |
171 | return NULL; | |
172 | if (conf) { | |
173 | context->event_cb = conf->event_cb; | |
174 | context->cb_ctx = conf->cb_ctx; | |
175 | context->cert_in_cb = conf->cert_in_cb; | |
176 | } | |
177 | return context; | |
178 | } | |
179 | ||
180 | ||
6fc6879b JM |
181 | #ifdef CONFIG_NO_STDOUT_DEBUG |
182 | ||
183 | static void _tls_show_errors(void) | |
184 | { | |
185 | unsigned long err; | |
186 | ||
187 | while ((err = ERR_get_error())) { | |
188 | /* Just ignore the errors, since stdout is disabled */ | |
189 | } | |
190 | } | |
191 | #define tls_show_errors(l, f, t) _tls_show_errors() | |
192 | ||
193 | #else /* CONFIG_NO_STDOUT_DEBUG */ | |
194 | ||
195 | static void tls_show_errors(int level, const char *func, const char *txt) | |
196 | { | |
197 | unsigned long err; | |
198 | ||
199 | wpa_printf(level, "OpenSSL: %s - %s %s", | |
200 | func, txt, ERR_error_string(ERR_get_error(), NULL)); | |
201 | ||
202 | while ((err = ERR_get_error())) { | |
203 | wpa_printf(MSG_INFO, "OpenSSL: pending error: %s", | |
204 | ERR_error_string(err, NULL)); | |
205 | } | |
206 | } | |
207 | ||
208 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
209 | ||
210 | ||
211 | #ifdef CONFIG_NATIVE_WINDOWS | |
212 | ||
213 | /* Windows CryptoAPI and access to certificate stores */ | |
214 | #include <wincrypt.h> | |
215 | ||
216 | #ifdef __MINGW32_VERSION | |
217 | /* | |
218 | * MinGW does not yet include all the needed definitions for CryptoAPI, so | |
219 | * define here whatever extra is needed. | |
220 | */ | |
6fc6879b JM |
221 | #define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16) |
222 | #define CERT_STORE_READONLY_FLAG 0x00008000 | |
223 | #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000 | |
6fc6879b JM |
224 | |
225 | #endif /* __MINGW32_VERSION */ | |
226 | ||
227 | ||
228 | struct cryptoapi_rsa_data { | |
229 | const CERT_CONTEXT *cert; | |
230 | HCRYPTPROV crypt_prov; | |
231 | DWORD key_spec; | |
232 | BOOL free_crypt_prov; | |
233 | }; | |
234 | ||
235 | ||
236 | static void cryptoapi_error(const char *msg) | |
237 | { | |
238 | wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u", | |
239 | msg, (unsigned int) GetLastError()); | |
240 | } | |
241 | ||
242 | ||
243 | static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from, | |
244 | unsigned char *to, RSA *rsa, int padding) | |
245 | { | |
246 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
247 | return 0; | |
248 | } | |
249 | ||
250 | ||
251 | static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from, | |
252 | unsigned char *to, RSA *rsa, int padding) | |
253 | { | |
254 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
255 | return 0; | |
256 | } | |
257 | ||
258 | ||
259 | static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from, | |
260 | unsigned char *to, RSA *rsa, int padding) | |
261 | { | |
262 | struct cryptoapi_rsa_data *priv = | |
263 | (struct cryptoapi_rsa_data *) rsa->meth->app_data; | |
264 | HCRYPTHASH hash; | |
265 | DWORD hash_size, len, i; | |
266 | unsigned char *buf = NULL; | |
267 | int ret = 0; | |
268 | ||
269 | if (priv == NULL) { | |
270 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
271 | ERR_R_PASSED_NULL_PARAMETER); | |
272 | return 0; | |
273 | } | |
274 | ||
275 | if (padding != RSA_PKCS1_PADDING) { | |
276 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
277 | RSA_R_UNKNOWN_PADDING_TYPE); | |
278 | return 0; | |
279 | } | |
280 | ||
281 | if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) { | |
282 | wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported", | |
283 | __func__); | |
284 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
285 | RSA_R_INVALID_MESSAGE_LENGTH); | |
286 | return 0; | |
287 | } | |
288 | ||
289 | if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash)) | |
290 | { | |
291 | cryptoapi_error("CryptCreateHash failed"); | |
292 | return 0; | |
293 | } | |
294 | ||
295 | len = sizeof(hash_size); | |
296 | if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len, | |
297 | 0)) { | |
298 | cryptoapi_error("CryptGetHashParam failed"); | |
299 | goto err; | |
300 | } | |
301 | ||
302 | if ((int) hash_size != flen) { | |
303 | wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)", | |
304 | (unsigned) hash_size, flen); | |
305 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
306 | RSA_R_INVALID_MESSAGE_LENGTH); | |
307 | goto err; | |
308 | } | |
309 | if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) { | |
310 | cryptoapi_error("CryptSetHashParam failed"); | |
311 | goto err; | |
312 | } | |
313 | ||
314 | len = RSA_size(rsa); | |
315 | buf = os_malloc(len); | |
316 | if (buf == NULL) { | |
317 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE); | |
318 | goto err; | |
319 | } | |
320 | ||
321 | if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) { | |
322 | cryptoapi_error("CryptSignHash failed"); | |
323 | goto err; | |
324 | } | |
325 | ||
326 | for (i = 0; i < len; i++) | |
327 | to[i] = buf[len - i - 1]; | |
328 | ret = len; | |
329 | ||
330 | err: | |
331 | os_free(buf); | |
332 | CryptDestroyHash(hash); | |
333 | ||
334 | return ret; | |
335 | } | |
336 | ||
337 | ||
338 | static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from, | |
339 | unsigned char *to, RSA *rsa, int padding) | |
340 | { | |
341 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
342 | return 0; | |
343 | } | |
344 | ||
345 | ||
346 | static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv) | |
347 | { | |
348 | if (priv == NULL) | |
349 | return; | |
350 | if (priv->crypt_prov && priv->free_crypt_prov) | |
351 | CryptReleaseContext(priv->crypt_prov, 0); | |
352 | if (priv->cert) | |
353 | CertFreeCertificateContext(priv->cert); | |
354 | os_free(priv); | |
355 | } | |
356 | ||
357 | ||
358 | static int cryptoapi_finish(RSA *rsa) | |
359 | { | |
360 | cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data); | |
361 | os_free((void *) rsa->meth); | |
362 | rsa->meth = NULL; | |
363 | return 1; | |
364 | } | |
365 | ||
366 | ||
367 | static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store) | |
368 | { | |
369 | HCERTSTORE cs; | |
370 | const CERT_CONTEXT *ret = NULL; | |
371 | ||
372 | cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0, | |
373 | store | CERT_STORE_OPEN_EXISTING_FLAG | | |
374 | CERT_STORE_READONLY_FLAG, L"MY"); | |
375 | if (cs == NULL) { | |
376 | cryptoapi_error("Failed to open 'My system store'"); | |
377 | return NULL; | |
378 | } | |
379 | ||
380 | if (strncmp(name, "cert://", 7) == 0) { | |
381 | unsigned short wbuf[255]; | |
382 | MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255); | |
383 | ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING | | |
384 | PKCS_7_ASN_ENCODING, | |
385 | 0, CERT_FIND_SUBJECT_STR, | |
386 | wbuf, NULL); | |
387 | } else if (strncmp(name, "hash://", 7) == 0) { | |
388 | CRYPT_HASH_BLOB blob; | |
389 | int len; | |
390 | const char *hash = name + 7; | |
391 | unsigned char *buf; | |
392 | ||
393 | len = os_strlen(hash) / 2; | |
394 | buf = os_malloc(len); | |
395 | if (buf && hexstr2bin(hash, buf, len) == 0) { | |
396 | blob.cbData = len; | |
397 | blob.pbData = buf; | |
398 | ret = CertFindCertificateInStore(cs, | |
399 | X509_ASN_ENCODING | | |
400 | PKCS_7_ASN_ENCODING, | |
401 | 0, CERT_FIND_HASH, | |
402 | &blob, NULL); | |
403 | } | |
404 | os_free(buf); | |
405 | } | |
406 | ||
407 | CertCloseStore(cs, 0); | |
408 | ||
409 | return ret; | |
410 | } | |
411 | ||
412 | ||
413 | static int tls_cryptoapi_cert(SSL *ssl, const char *name) | |
414 | { | |
415 | X509 *cert = NULL; | |
416 | RSA *rsa = NULL, *pub_rsa; | |
417 | struct cryptoapi_rsa_data *priv; | |
418 | RSA_METHOD *rsa_meth; | |
419 | ||
420 | if (name == NULL || | |
421 | (strncmp(name, "cert://", 7) != 0 && | |
422 | strncmp(name, "hash://", 7) != 0)) | |
423 | return -1; | |
424 | ||
425 | priv = os_zalloc(sizeof(*priv)); | |
426 | rsa_meth = os_zalloc(sizeof(*rsa_meth)); | |
427 | if (priv == NULL || rsa_meth == NULL) { | |
428 | wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory " | |
429 | "for CryptoAPI RSA method"); | |
430 | os_free(priv); | |
431 | os_free(rsa_meth); | |
432 | return -1; | |
433 | } | |
434 | ||
435 | priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER); | |
436 | if (priv->cert == NULL) { | |
437 | priv->cert = cryptoapi_find_cert( | |
438 | name, CERT_SYSTEM_STORE_LOCAL_MACHINE); | |
439 | } | |
440 | if (priv->cert == NULL) { | |
441 | wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate " | |
442 | "'%s'", name); | |
443 | goto err; | |
444 | } | |
445 | ||
fee31f76 JM |
446 | cert = d2i_X509(NULL, |
447 | (const unsigned char **) &priv->cert->pbCertEncoded, | |
6fc6879b JM |
448 | priv->cert->cbCertEncoded); |
449 | if (cert == NULL) { | |
450 | wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER " | |
451 | "encoding"); | |
452 | goto err; | |
453 | } | |
454 | ||
6fc6879b JM |
455 | if (!CryptAcquireCertificatePrivateKey(priv->cert, |
456 | CRYPT_ACQUIRE_COMPARE_KEY_FLAG, | |
457 | NULL, &priv->crypt_prov, | |
458 | &priv->key_spec, | |
459 | &priv->free_crypt_prov)) { | |
460 | cryptoapi_error("Failed to acquire a private key for the " | |
461 | "certificate"); | |
462 | goto err; | |
463 | } | |
464 | ||
465 | rsa_meth->name = "Microsoft CryptoAPI RSA Method"; | |
466 | rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc; | |
467 | rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec; | |
468 | rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc; | |
469 | rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec; | |
470 | rsa_meth->finish = cryptoapi_finish; | |
471 | rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK; | |
472 | rsa_meth->app_data = (char *) priv; | |
473 | ||
474 | rsa = RSA_new(); | |
475 | if (rsa == NULL) { | |
476 | SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, | |
477 | ERR_R_MALLOC_FAILURE); | |
478 | goto err; | |
479 | } | |
480 | ||
481 | if (!SSL_use_certificate(ssl, cert)) { | |
482 | RSA_free(rsa); | |
483 | rsa = NULL; | |
484 | goto err; | |
485 | } | |
486 | pub_rsa = cert->cert_info->key->pkey->pkey.rsa; | |
487 | X509_free(cert); | |
488 | cert = NULL; | |
489 | ||
490 | rsa->n = BN_dup(pub_rsa->n); | |
491 | rsa->e = BN_dup(pub_rsa->e); | |
492 | if (!RSA_set_method(rsa, rsa_meth)) | |
493 | goto err; | |
494 | ||
495 | if (!SSL_use_RSAPrivateKey(ssl, rsa)) | |
496 | goto err; | |
497 | RSA_free(rsa); | |
498 | ||
499 | return 0; | |
500 | ||
501 | err: | |
502 | if (cert) | |
503 | X509_free(cert); | |
504 | if (rsa) | |
505 | RSA_free(rsa); | |
506 | else { | |
507 | os_free(rsa_meth); | |
508 | cryptoapi_free_data(priv); | |
509 | } | |
510 | return -1; | |
511 | } | |
512 | ||
513 | ||
514 | static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name) | |
515 | { | |
516 | HCERTSTORE cs; | |
517 | PCCERT_CONTEXT ctx = NULL; | |
518 | X509 *cert; | |
519 | char buf[128]; | |
520 | const char *store; | |
521 | #ifdef UNICODE | |
522 | WCHAR *wstore; | |
523 | #endif /* UNICODE */ | |
524 | ||
6fc6879b JM |
525 | if (name == NULL || strncmp(name, "cert_store://", 13) != 0) |
526 | return -1; | |
527 | ||
528 | store = name + 13; | |
529 | #ifdef UNICODE | |
530 | wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR)); | |
531 | if (wstore == NULL) | |
532 | return -1; | |
533 | wsprintf(wstore, L"%S", store); | |
534 | cs = CertOpenSystemStore(0, wstore); | |
535 | os_free(wstore); | |
536 | #else /* UNICODE */ | |
537 | cs = CertOpenSystemStore(0, store); | |
538 | #endif /* UNICODE */ | |
539 | if (cs == NULL) { | |
540 | wpa_printf(MSG_DEBUG, "%s: failed to open system cert store " | |
541 | "'%s': error=%d", __func__, store, | |
542 | (int) GetLastError()); | |
543 | return -1; | |
544 | } | |
545 | ||
546 | while ((ctx = CertEnumCertificatesInStore(cs, ctx))) { | |
fee31f76 JM |
547 | cert = d2i_X509(NULL, |
548 | (const unsigned char **) &ctx->pbCertEncoded, | |
6fc6879b JM |
549 | ctx->cbCertEncoded); |
550 | if (cert == NULL) { | |
551 | wpa_printf(MSG_INFO, "CryptoAPI: Could not process " | |
552 | "X509 DER encoding for CA cert"); | |
553 | continue; | |
554 | } | |
555 | ||
556 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
557 | sizeof(buf)); | |
558 | wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for " | |
559 | "system certificate store: subject='%s'", buf); | |
560 | ||
561 | if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) { | |
562 | tls_show_errors(MSG_WARNING, __func__, | |
563 | "Failed to add ca_cert to OpenSSL " | |
564 | "certificate store"); | |
565 | } | |
566 | ||
567 | X509_free(cert); | |
568 | } | |
569 | ||
570 | if (!CertCloseStore(cs, 0)) { | |
571 | wpa_printf(MSG_DEBUG, "%s: failed to close system cert store " | |
572 | "'%s': error=%d", __func__, name + 13, | |
573 | (int) GetLastError()); | |
574 | } | |
575 | ||
576 | return 0; | |
577 | } | |
578 | ||
579 | ||
580 | #else /* CONFIG_NATIVE_WINDOWS */ | |
581 | ||
582 | static int tls_cryptoapi_cert(SSL *ssl, const char *name) | |
583 | { | |
584 | return -1; | |
585 | } | |
586 | ||
587 | #endif /* CONFIG_NATIVE_WINDOWS */ | |
588 | ||
589 | ||
590 | static void ssl_info_cb(const SSL *ssl, int where, int ret) | |
591 | { | |
592 | const char *str; | |
593 | int w; | |
594 | ||
595 | wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret); | |
596 | w = where & ~SSL_ST_MASK; | |
597 | if (w & SSL_ST_CONNECT) | |
598 | str = "SSL_connect"; | |
599 | else if (w & SSL_ST_ACCEPT) | |
600 | str = "SSL_accept"; | |
601 | else | |
602 | str = "undefined"; | |
603 | ||
604 | if (where & SSL_CB_LOOP) { | |
605 | wpa_printf(MSG_DEBUG, "SSL: %s:%s", | |
606 | str, SSL_state_string_long(ssl)); | |
607 | } else if (where & SSL_CB_ALERT) { | |
7c0e1e27 | 608 | struct tls_connection *conn = SSL_get_app_data((SSL *) ssl); |
6fc6879b JM |
609 | wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s", |
610 | where & SSL_CB_READ ? | |
611 | "read (remote end reported an error)" : | |
612 | "write (local SSL3 detected an error)", | |
613 | SSL_alert_type_string_long(ret), | |
614 | SSL_alert_desc_string_long(ret)); | |
615 | if ((ret >> 8) == SSL3_AL_FATAL) { | |
6fc6879b JM |
616 | if (where & SSL_CB_READ) |
617 | conn->read_alerts++; | |
618 | else | |
619 | conn->write_alerts++; | |
620 | } | |
7c0e1e27 | 621 | if (conn->context->event_cb != NULL) { |
dd7fec1f | 622 | union tls_event_data ev; |
7c0e1e27 | 623 | struct tls_context *context = conn->context; |
dd7fec1f PS |
624 | os_memset(&ev, 0, sizeof(ev)); |
625 | ev.alert.is_local = !(where & SSL_CB_READ); | |
626 | ev.alert.type = SSL_alert_type_string_long(ret); | |
627 | ev.alert.description = SSL_alert_desc_string_long(ret); | |
7c0e1e27 | 628 | context->event_cb(context->cb_ctx, TLS_ALERT, &ev); |
dd7fec1f | 629 | } |
6fc6879b JM |
630 | } else if (where & SSL_CB_EXIT && ret <= 0) { |
631 | wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s", | |
632 | str, ret == 0 ? "failed" : "error", | |
633 | SSL_state_string_long(ssl)); | |
634 | } | |
635 | } | |
636 | ||
637 | ||
638 | #ifndef OPENSSL_NO_ENGINE | |
639 | /** | |
640 | * tls_engine_load_dynamic_generic - load any openssl engine | |
641 | * @pre: an array of commands and values that load an engine initialized | |
642 | * in the engine specific function | |
643 | * @post: an array of commands and values that initialize an already loaded | |
644 | * engine (or %NULL if not required) | |
645 | * @id: the engine id of the engine to load (only required if post is not %NULL | |
646 | * | |
647 | * This function is a generic function that loads any openssl engine. | |
648 | * | |
649 | * Returns: 0 on success, -1 on failure | |
650 | */ | |
651 | static int tls_engine_load_dynamic_generic(const char *pre[], | |
652 | const char *post[], const char *id) | |
653 | { | |
654 | ENGINE *engine; | |
655 | const char *dynamic_id = "dynamic"; | |
656 | ||
657 | engine = ENGINE_by_id(id); | |
658 | if (engine) { | |
659 | ENGINE_free(engine); | |
660 | wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already " | |
661 | "available", id); | |
662 | return 0; | |
663 | } | |
664 | ERR_clear_error(); | |
665 | ||
666 | engine = ENGINE_by_id(dynamic_id); | |
667 | if (engine == NULL) { | |
668 | wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]", | |
669 | dynamic_id, | |
670 | ERR_error_string(ERR_get_error(), NULL)); | |
671 | return -1; | |
672 | } | |
673 | ||
674 | /* Perform the pre commands. This will load the engine. */ | |
675 | while (pre && pre[0]) { | |
676 | wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]); | |
677 | if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) { | |
678 | wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: " | |
679 | "%s %s [%s]", pre[0], pre[1], | |
680 | ERR_error_string(ERR_get_error(), NULL)); | |
681 | ENGINE_free(engine); | |
682 | return -1; | |
683 | } | |
684 | pre += 2; | |
685 | } | |
686 | ||
687 | /* | |
688 | * Free the reference to the "dynamic" engine. The loaded engine can | |
689 | * now be looked up using ENGINE_by_id(). | |
690 | */ | |
691 | ENGINE_free(engine); | |
692 | ||
693 | engine = ENGINE_by_id(id); | |
694 | if (engine == NULL) { | |
695 | wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]", | |
696 | id, ERR_error_string(ERR_get_error(), NULL)); | |
697 | return -1; | |
698 | } | |
699 | ||
700 | while (post && post[0]) { | |
701 | wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]); | |
702 | if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) { | |
703 | wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:" | |
704 | " %s %s [%s]", post[0], post[1], | |
705 | ERR_error_string(ERR_get_error(), NULL)); | |
706 | ENGINE_remove(engine); | |
707 | ENGINE_free(engine); | |
708 | return -1; | |
709 | } | |
710 | post += 2; | |
711 | } | |
712 | ENGINE_free(engine); | |
713 | ||
714 | return 0; | |
715 | } | |
716 | ||
717 | ||
718 | /** | |
719 | * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc | |
720 | * @pkcs11_so_path: pksc11_so_path from the configuration | |
721 | * @pcks11_module_path: pkcs11_module_path from the configuration | |
722 | */ | |
723 | static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path, | |
724 | const char *pkcs11_module_path) | |
725 | { | |
726 | char *engine_id = "pkcs11"; | |
727 | const char *pre_cmd[] = { | |
728 | "SO_PATH", NULL /* pkcs11_so_path */, | |
729 | "ID", NULL /* engine_id */, | |
730 | "LIST_ADD", "1", | |
731 | /* "NO_VCHECK", "1", */ | |
732 | "LOAD", NULL, | |
733 | NULL, NULL | |
734 | }; | |
735 | const char *post_cmd[] = { | |
736 | "MODULE_PATH", NULL /* pkcs11_module_path */, | |
737 | NULL, NULL | |
738 | }; | |
739 | ||
5c8ab0d4 | 740 | if (!pkcs11_so_path) |
6fc6879b JM |
741 | return 0; |
742 | ||
743 | pre_cmd[1] = pkcs11_so_path; | |
744 | pre_cmd[3] = engine_id; | |
5c8ab0d4 DW |
745 | if (pkcs11_module_path) |
746 | post_cmd[1] = pkcs11_module_path; | |
747 | else | |
748 | post_cmd[0] = NULL; | |
6fc6879b JM |
749 | |
750 | wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s", | |
751 | pkcs11_so_path); | |
752 | ||
753 | return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id); | |
754 | } | |
755 | ||
756 | ||
757 | /** | |
758 | * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc | |
759 | * @opensc_so_path: opensc_so_path from the configuration | |
760 | */ | |
761 | static int tls_engine_load_dynamic_opensc(const char *opensc_so_path) | |
762 | { | |
763 | char *engine_id = "opensc"; | |
764 | const char *pre_cmd[] = { | |
765 | "SO_PATH", NULL /* opensc_so_path */, | |
766 | "ID", NULL /* engine_id */, | |
767 | "LIST_ADD", "1", | |
768 | "LOAD", NULL, | |
769 | NULL, NULL | |
770 | }; | |
771 | ||
772 | if (!opensc_so_path) | |
773 | return 0; | |
774 | ||
775 | pre_cmd[1] = opensc_so_path; | |
776 | pre_cmd[3] = engine_id; | |
777 | ||
778 | wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s", | |
779 | opensc_so_path); | |
780 | ||
781 | return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id); | |
782 | } | |
783 | #endif /* OPENSSL_NO_ENGINE */ | |
784 | ||
785 | ||
acf36f31 JM |
786 | static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess) |
787 | { | |
788 | struct wpabuf *buf; | |
789 | ||
790 | if (tls_ex_idx_session < 0) | |
791 | return; | |
792 | buf = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
793 | if (!buf) | |
794 | return; | |
795 | wpa_printf(MSG_DEBUG, | |
796 | "OpenSSL: Free application session data %p (sess %p)", | |
797 | buf, sess); | |
798 | wpabuf_free(buf); | |
799 | ||
800 | SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL); | |
801 | } | |
802 | ||
803 | ||
6fc6879b JM |
804 | void * tls_init(const struct tls_config *conf) |
805 | { | |
bd9b8b2b | 806 | struct tls_data *data; |
6fc6879b | 807 | SSL_CTX *ssl; |
7c0e1e27 | 808 | struct tls_context *context; |
b7328434 | 809 | const char *ciphers; |
6fc6879b JM |
810 | |
811 | if (tls_openssl_ref_count == 0) { | |
7c0e1e27 PS |
812 | tls_global = context = tls_context_new(conf); |
813 | if (context == NULL) | |
00468b46 | 814 | return NULL; |
76f04b38 JM |
815 | #ifdef CONFIG_FIPS |
816 | #ifdef OPENSSL_FIPS | |
cf123d7f | 817 | if (conf && conf->fips_mode) { |
4fc53159 JM |
818 | static int fips_enabled = 0; |
819 | ||
820 | if (!fips_enabled && !FIPS_mode_set(1)) { | |
76f04b38 JM |
821 | wpa_printf(MSG_ERROR, "Failed to enable FIPS " |
822 | "mode"); | |
823 | ERR_load_crypto_strings(); | |
824 | ERR_print_errors_fp(stderr); | |
b36540db JM |
825 | os_free(tls_global); |
826 | tls_global = NULL; | |
76f04b38 | 827 | return NULL; |
4fc53159 | 828 | } else { |
76f04b38 | 829 | wpa_printf(MSG_INFO, "Running in FIPS mode"); |
4fc53159 JM |
830 | fips_enabled = 1; |
831 | } | |
76f04b38 JM |
832 | } |
833 | #else /* OPENSSL_FIPS */ | |
cf123d7f | 834 | if (conf && conf->fips_mode) { |
76f04b38 JM |
835 | wpa_printf(MSG_ERROR, "FIPS mode requested, but not " |
836 | "supported"); | |
b36540db JM |
837 | os_free(tls_global); |
838 | tls_global = NULL; | |
76f04b38 JM |
839 | return NULL; |
840 | } | |
841 | #endif /* OPENSSL_FIPS */ | |
842 | #endif /* CONFIG_FIPS */ | |
6fc6879b JM |
843 | SSL_load_error_strings(); |
844 | SSL_library_init(); | |
fee31f76 | 845 | #ifndef OPENSSL_NO_SHA256 |
e1ffdfc1 JM |
846 | EVP_add_digest(EVP_sha256()); |
847 | #endif /* OPENSSL_NO_SHA256 */ | |
6fc6879b JM |
848 | /* TODO: if /dev/urandom is available, PRNG is seeded |
849 | * automatically. If this is not the case, random data should | |
850 | * be added here. */ | |
851 | ||
852 | #ifdef PKCS12_FUNCS | |
1056dad7 JM |
853 | #ifndef OPENSSL_NO_RC2 |
854 | /* | |
855 | * 40-bit RC2 is commonly used in PKCS#12 files, so enable it. | |
856 | * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8 | |
857 | * versions, but it looks like OpenSSL 1.0.0 does not do that | |
858 | * anymore. | |
859 | */ | |
860 | EVP_add_cipher(EVP_rc2_40_cbc()); | |
861 | #endif /* OPENSSL_NO_RC2 */ | |
6fc6879b JM |
862 | PKCS12_PBE_add(); |
863 | #endif /* PKCS12_FUNCS */ | |
7c0e1e27 | 864 | } else { |
7c0e1e27 PS |
865 | context = tls_context_new(conf); |
866 | if (context == NULL) | |
867 | return NULL; | |
6fc6879b JM |
868 | } |
869 | tls_openssl_ref_count++; | |
870 | ||
bd9b8b2b JM |
871 | data = os_zalloc(sizeof(*data)); |
872 | if (data) | |
873 | ssl = SSL_CTX_new(SSLv23_method()); | |
874 | else | |
875 | ssl = NULL; | |
7c0e1e27 PS |
876 | if (ssl == NULL) { |
877 | tls_openssl_ref_count--; | |
a288da61 JM |
878 | if (context != tls_global) |
879 | os_free(context); | |
7c0e1e27 PS |
880 | if (tls_openssl_ref_count == 0) { |
881 | os_free(tls_global); | |
882 | tls_global = NULL; | |
7c0e1e27 | 883 | } |
6fc6879b | 884 | return NULL; |
7c0e1e27 | 885 | } |
bd9b8b2b | 886 | data->ssl = ssl; |
acf36f31 JM |
887 | if (conf) |
888 | data->tls_session_lifetime = conf->tls_session_lifetime; | |
6fc6879b | 889 | |
35efa247 JM |
890 | SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2); |
891 | SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3); | |
892 | ||
6fc6879b | 893 | SSL_CTX_set_info_callback(ssl, ssl_info_cb); |
7c0e1e27 | 894 | SSL_CTX_set_app_data(ssl, context); |
acf36f31 JM |
895 | if (data->tls_session_lifetime > 0) { |
896 | SSL_CTX_set_quiet_shutdown(ssl, 1); | |
897 | /* | |
898 | * Set default context here. In practice, this will be replaced | |
899 | * by the per-EAP method context in tls_connection_set_verify(). | |
900 | */ | |
901 | SSL_CTX_set_session_id_context(ssl, (u8 *) "hostapd", 7); | |
902 | SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_SERVER); | |
903 | SSL_CTX_set_timeout(ssl, data->tls_session_lifetime); | |
904 | SSL_CTX_sess_set_remove_cb(ssl, remove_session_cb); | |
905 | } else { | |
906 | SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_OFF); | |
907 | } | |
908 | ||
909 | if (tls_ex_idx_session < 0) { | |
910 | tls_ex_idx_session = SSL_SESSION_get_ex_new_index( | |
911 | 0, NULL, NULL, NULL, NULL); | |
912 | if (tls_ex_idx_session < 0) { | |
913 | tls_deinit(data); | |
914 | return NULL; | |
915 | } | |
916 | } | |
6fc6879b JM |
917 | |
918 | #ifndef OPENSSL_NO_ENGINE | |
ddda6276 DW |
919 | wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine"); |
920 | ERR_load_ENGINE_strings(); | |
921 | ENGINE_load_dynamic(); | |
922 | ||
6fc6879b JM |
923 | if (conf && |
924 | (conf->opensc_engine_path || conf->pkcs11_engine_path || | |
925 | conf->pkcs11_module_path)) { | |
6fc6879b JM |
926 | if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) || |
927 | tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path, | |
928 | conf->pkcs11_module_path)) { | |
bd9b8b2b | 929 | tls_deinit(data); |
6fc6879b JM |
930 | return NULL; |
931 | } | |
932 | } | |
933 | #endif /* OPENSSL_NO_ENGINE */ | |
934 | ||
b7328434 JM |
935 | if (conf && conf->openssl_ciphers) |
936 | ciphers = conf->openssl_ciphers; | |
937 | else | |
938 | ciphers = "DEFAULT:!EXP:!LOW"; | |
939 | if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) { | |
940 | wpa_printf(MSG_ERROR, | |
941 | "OpenSSL: Failed to set cipher string '%s'", | |
942 | ciphers); | |
bd9b8b2b | 943 | tls_deinit(data); |
b7328434 JM |
944 | return NULL; |
945 | } | |
946 | ||
bd9b8b2b | 947 | return data; |
6fc6879b JM |
948 | } |
949 | ||
950 | ||
951 | void tls_deinit(void *ssl_ctx) | |
952 | { | |
bd9b8b2b JM |
953 | struct tls_data *data = ssl_ctx; |
954 | SSL_CTX *ssl = data->ssl; | |
7c0e1e27 PS |
955 | struct tls_context *context = SSL_CTX_get_app_data(ssl); |
956 | if (context != tls_global) | |
957 | os_free(context); | |
acf36f31 JM |
958 | if (data->tls_session_lifetime > 0) |
959 | SSL_CTX_flush_sessions(ssl, 0); | |
6fc6879b JM |
960 | SSL_CTX_free(ssl); |
961 | ||
962 | tls_openssl_ref_count--; | |
963 | if (tls_openssl_ref_count == 0) { | |
964 | #ifndef OPENSSL_NO_ENGINE | |
965 | ENGINE_cleanup(); | |
966 | #endif /* OPENSSL_NO_ENGINE */ | |
967 | CRYPTO_cleanup_all_ex_data(); | |
a8572960 | 968 | ERR_remove_thread_state(NULL); |
6fc6879b JM |
969 | ERR_free_strings(); |
970 | EVP_cleanup(); | |
080585c0 JM |
971 | os_free(tls_global->ocsp_stapling_response); |
972 | tls_global->ocsp_stapling_response = NULL; | |
00468b46 JM |
973 | os_free(tls_global); |
974 | tls_global = NULL; | |
6fc6879b | 975 | } |
bd9b8b2b JM |
976 | |
977 | os_free(data); | |
6fc6879b JM |
978 | } |
979 | ||
980 | ||
fd4fb281 MG |
981 | #ifndef OPENSSL_NO_ENGINE |
982 | ||
983 | /* Cryptoki return values */ | |
984 | #define CKR_PIN_INCORRECT 0x000000a0 | |
985 | #define CKR_PIN_INVALID 0x000000a1 | |
986 | #define CKR_PIN_LEN_RANGE 0x000000a2 | |
987 | ||
988 | /* libp11 */ | |
989 | #define ERR_LIB_PKCS11 ERR_LIB_USER | |
990 | ||
991 | static int tls_is_pin_error(unsigned int err) | |
992 | { | |
993 | return ERR_GET_LIB(err) == ERR_LIB_PKCS11 && | |
994 | (ERR_GET_REASON(err) == CKR_PIN_INCORRECT || | |
995 | ERR_GET_REASON(err) == CKR_PIN_INVALID || | |
996 | ERR_GET_REASON(err) == CKR_PIN_LEN_RANGE); | |
997 | } | |
998 | ||
999 | #endif /* OPENSSL_NO_ENGINE */ | |
1000 | ||
1001 | ||
aeeb0bca AL |
1002 | #ifdef ANDROID |
1003 | /* EVP_PKEY_from_keystore comes from system/security/keystore-engine. */ | |
1004 | EVP_PKEY * EVP_PKEY_from_keystore(const char *key_id); | |
1005 | #endif /* ANDROID */ | |
1006 | ||
6fc6879b | 1007 | static int tls_engine_init(struct tls_connection *conn, const char *engine_id, |
e59c91af DS |
1008 | const char *pin, const char *key_id, |
1009 | const char *cert_id, const char *ca_cert_id) | |
6fc6879b | 1010 | { |
aeeb0bca AL |
1011 | #if defined(ANDROID) && defined(OPENSSL_IS_BORINGSSL) |
1012 | #if !defined(OPENSSL_NO_ENGINE) | |
1013 | #error "This code depends on OPENSSL_NO_ENGINE being defined by BoringSSL." | |
1014 | #endif | |
1015 | if (!key_id) | |
1016 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1017 | conn->engine = NULL; | |
1018 | conn->private_key = EVP_PKEY_from_keystore(key_id); | |
1019 | if (!conn->private_key) { | |
1020 | wpa_printf(MSG_ERROR, | |
1021 | "ENGINE: cannot load private key with id '%s' [%s]", | |
1022 | key_id, | |
1023 | ERR_error_string(ERR_get_error(), NULL)); | |
1024 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1025 | } | |
1026 | #endif /* ANDROID && OPENSSL_IS_BORINGSSL */ | |
1027 | ||
6fc6879b JM |
1028 | #ifndef OPENSSL_NO_ENGINE |
1029 | int ret = -1; | |
1030 | if (engine_id == NULL) { | |
1031 | wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set"); | |
1032 | return -1; | |
1033 | } | |
6fc6879b JM |
1034 | |
1035 | ERR_clear_error(); | |
1176ab6d KR |
1036 | #ifdef ANDROID |
1037 | ENGINE_load_dynamic(); | |
1038 | #endif | |
6fc6879b JM |
1039 | conn->engine = ENGINE_by_id(engine_id); |
1040 | if (!conn->engine) { | |
1041 | wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]", | |
1042 | engine_id, ERR_error_string(ERR_get_error(), NULL)); | |
1043 | goto err; | |
1044 | } | |
1045 | if (ENGINE_init(conn->engine) != 1) { | |
1046 | wpa_printf(MSG_ERROR, "ENGINE: engine init failed " | |
1047 | "(engine: %s) [%s]", engine_id, | |
1048 | ERR_error_string(ERR_get_error(), NULL)); | |
1049 | goto err; | |
1050 | } | |
1051 | wpa_printf(MSG_DEBUG, "ENGINE: engine initialized"); | |
1052 | ||
1176ab6d | 1053 | #ifndef ANDROID |
a642a52b | 1054 | if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) { |
6fc6879b JM |
1055 | wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]", |
1056 | ERR_error_string(ERR_get_error(), NULL)); | |
1057 | goto err; | |
1058 | } | |
1176ab6d | 1059 | #endif |
3d268b8d | 1060 | if (key_id) { |
a642a52b DW |
1061 | /* |
1062 | * Ensure that the ENGINE does not attempt to use the OpenSSL | |
1063 | * UI system to obtain a PIN, if we didn't provide one. | |
1064 | */ | |
1065 | struct { | |
1066 | const void *password; | |
1067 | const char *prompt_info; | |
1068 | } key_cb = { "", NULL }; | |
1069 | ||
3d268b8d DW |
1070 | /* load private key first in-case PIN is required for cert */ |
1071 | conn->private_key = ENGINE_load_private_key(conn->engine, | |
a642a52b DW |
1072 | key_id, NULL, |
1073 | &key_cb); | |
3d268b8d | 1074 | if (!conn->private_key) { |
fd4fb281 MG |
1075 | unsigned long err = ERR_get_error(); |
1076 | ||
3d268b8d DW |
1077 | wpa_printf(MSG_ERROR, |
1078 | "ENGINE: cannot load private key with id '%s' [%s]", | |
1079 | key_id, | |
fd4fb281 MG |
1080 | ERR_error_string(err, NULL)); |
1081 | if (tls_is_pin_error(err)) | |
1082 | ret = TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN; | |
1083 | else | |
1084 | ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
3d268b8d DW |
1085 | goto err; |
1086 | } | |
6fc6879b | 1087 | } |
e59c91af DS |
1088 | |
1089 | /* handle a certificate and/or CA certificate */ | |
1090 | if (cert_id || ca_cert_id) { | |
1091 | const char *cmd_name = "LOAD_CERT_CTRL"; | |
1092 | ||
1093 | /* test if the engine supports a LOAD_CERT_CTRL */ | |
1094 | if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME, | |
1095 | 0, (void *)cmd_name, NULL)) { | |
1096 | wpa_printf(MSG_ERROR, "ENGINE: engine does not support" | |
1097 | " loading certificates"); | |
1098 | ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1099 | goto err; | |
1100 | } | |
1101 | } | |
1102 | ||
6fc6879b JM |
1103 | return 0; |
1104 | ||
1105 | err: | |
1106 | if (conn->engine) { | |
1107 | ENGINE_free(conn->engine); | |
1108 | conn->engine = NULL; | |
1109 | } | |
1110 | ||
1111 | if (conn->private_key) { | |
1112 | EVP_PKEY_free(conn->private_key); | |
1113 | conn->private_key = NULL; | |
1114 | } | |
1115 | ||
1116 | return ret; | |
1117 | #else /* OPENSSL_NO_ENGINE */ | |
1118 | return 0; | |
1119 | #endif /* OPENSSL_NO_ENGINE */ | |
1120 | } | |
1121 | ||
1122 | ||
1123 | static void tls_engine_deinit(struct tls_connection *conn) | |
1124 | { | |
aeeb0bca | 1125 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
1126 | wpa_printf(MSG_DEBUG, "ENGINE: engine deinit"); |
1127 | if (conn->private_key) { | |
1128 | EVP_PKEY_free(conn->private_key); | |
1129 | conn->private_key = NULL; | |
1130 | } | |
1131 | if (conn->engine) { | |
aeeb0bca | 1132 | #if !defined(OPENSSL_IS_BORINGSSL) |
6fc6879b | 1133 | ENGINE_finish(conn->engine); |
aeeb0bca | 1134 | #endif /* !OPENSSL_IS_BORINGSSL */ |
6fc6879b JM |
1135 | conn->engine = NULL; |
1136 | } | |
aeeb0bca | 1137 | #endif /* ANDROID || !OPENSSL_NO_ENGINE */ |
6fc6879b JM |
1138 | } |
1139 | ||
1140 | ||
1141 | int tls_get_errors(void *ssl_ctx) | |
1142 | { | |
1143 | int count = 0; | |
1144 | unsigned long err; | |
1145 | ||
1146 | while ((err = ERR_get_error())) { | |
1147 | wpa_printf(MSG_INFO, "TLS - SSL error: %s", | |
1148 | ERR_error_string(err, NULL)); | |
1149 | count++; | |
1150 | } | |
1151 | ||
1152 | return count; | |
1153 | } | |
1154 | ||
bb52293e | 1155 | |
cbb15497 JM |
1156 | static const char * openssl_content_type(int content_type) |
1157 | { | |
1158 | switch (content_type) { | |
1159 | case 20: | |
1160 | return "change cipher spec"; | |
1161 | case 21: | |
1162 | return "alert"; | |
1163 | case 22: | |
1164 | return "handshake"; | |
1165 | case 23: | |
1166 | return "application data"; | |
1167 | case 24: | |
1168 | return "heartbeat"; | |
1169 | case 256: | |
1170 | return "TLS header info"; /* pseudo content type */ | |
1171 | default: | |
1172 | return "?"; | |
1173 | } | |
1174 | } | |
1175 | ||
1176 | ||
1177 | static const char * openssl_handshake_type(int content_type, const u8 *buf, | |
1178 | size_t len) | |
1179 | { | |
1180 | if (content_type != 22 || !buf || len == 0) | |
1181 | return ""; | |
1182 | switch (buf[0]) { | |
1183 | case 0: | |
1184 | return "hello request"; | |
1185 | case 1: | |
1186 | return "client hello"; | |
1187 | case 2: | |
1188 | return "server hello"; | |
1189 | case 4: | |
1190 | return "new session ticket"; | |
1191 | case 11: | |
1192 | return "certificate"; | |
1193 | case 12: | |
1194 | return "server key exchange"; | |
1195 | case 13: | |
1196 | return "certificate request"; | |
1197 | case 14: | |
1198 | return "server hello done"; | |
1199 | case 15: | |
1200 | return "certificate verify"; | |
1201 | case 16: | |
1202 | return "client key exchange"; | |
1203 | case 20: | |
1204 | return "finished"; | |
1205 | case 21: | |
1206 | return "certificate url"; | |
1207 | case 22: | |
1208 | return "certificate status"; | |
1209 | default: | |
1210 | return "?"; | |
1211 | } | |
1212 | } | |
1213 | ||
1214 | ||
bb52293e JM |
1215 | static void tls_msg_cb(int write_p, int version, int content_type, |
1216 | const void *buf, size_t len, SSL *ssl, void *arg) | |
1217 | { | |
1218 | struct tls_connection *conn = arg; | |
1219 | const u8 *pos = buf; | |
1220 | ||
faf8f293 JM |
1221 | if (write_p == 2) { |
1222 | wpa_printf(MSG_DEBUG, | |
1223 | "OpenSSL: session ver=0x%x content_type=%d", | |
1224 | version, content_type); | |
1225 | wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Data", buf, len); | |
1226 | return; | |
1227 | } | |
1228 | ||
cbb15497 JM |
1229 | wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d (%s/%s)", |
1230 | write_p ? "TX" : "RX", version, content_type, | |
1231 | openssl_content_type(content_type), | |
1232 | openssl_handshake_type(content_type, buf, len)); | |
bb52293e JM |
1233 | wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len); |
1234 | if (content_type == 24 && len >= 3 && pos[0] == 1) { | |
1235 | size_t payload_len = WPA_GET_BE16(pos + 1); | |
1236 | if (payload_len + 3 > len) { | |
1237 | wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected"); | |
1238 | conn->invalid_hb_used = 1; | |
1239 | } | |
1240 | } | |
1241 | } | |
1242 | ||
1243 | ||
6a31a31d | 1244 | struct tls_connection * tls_connection_init(void *ssl_ctx) |
6fc6879b | 1245 | { |
bd9b8b2b JM |
1246 | struct tls_data *data = ssl_ctx; |
1247 | SSL_CTX *ssl = data->ssl; | |
6a31a31d | 1248 | struct tls_connection *conn; |
fca25ef4 | 1249 | long options; |
6a31a31d | 1250 | struct tls_context *context = SSL_CTX_get_app_data(ssl); |
6fc6879b | 1251 | |
6a31a31d JM |
1252 | conn = os_zalloc(sizeof(*conn)); |
1253 | if (conn == NULL) | |
1254 | return NULL; | |
bd9b8b2b | 1255 | conn->ssl_ctx = ssl; |
6a31a31d JM |
1256 | conn->ssl = SSL_new(ssl); |
1257 | if (conn->ssl == NULL) { | |
6fc6879b JM |
1258 | tls_show_errors(MSG_INFO, __func__, |
1259 | "Failed to initialize new SSL connection"); | |
6a31a31d JM |
1260 | os_free(conn); |
1261 | return NULL; | |
6fc6879b JM |
1262 | } |
1263 | ||
6a31a31d JM |
1264 | conn->context = context; |
1265 | SSL_set_app_data(conn->ssl, conn); | |
1266 | SSL_set_msg_callback(conn->ssl, tls_msg_cb); | |
1267 | SSL_set_msg_callback_arg(conn->ssl, conn); | |
fca25ef4 JM |
1268 | options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | |
1269 | SSL_OP_SINGLE_DH_USE; | |
1270 | #ifdef SSL_OP_NO_COMPRESSION | |
1271 | options |= SSL_OP_NO_COMPRESSION; | |
1272 | #endif /* SSL_OP_NO_COMPRESSION */ | |
6a31a31d | 1273 | SSL_set_options(conn->ssl, options); |
6fc6879b | 1274 | |
6a31a31d JM |
1275 | conn->ssl_in = BIO_new(BIO_s_mem()); |
1276 | if (!conn->ssl_in) { | |
6fc6879b JM |
1277 | tls_show_errors(MSG_INFO, __func__, |
1278 | "Failed to create a new BIO for ssl_in"); | |
6a31a31d JM |
1279 | SSL_free(conn->ssl); |
1280 | os_free(conn); | |
1281 | return NULL; | |
6fc6879b JM |
1282 | } |
1283 | ||
6a31a31d JM |
1284 | conn->ssl_out = BIO_new(BIO_s_mem()); |
1285 | if (!conn->ssl_out) { | |
6fc6879b JM |
1286 | tls_show_errors(MSG_INFO, __func__, |
1287 | "Failed to create a new BIO for ssl_out"); | |
1288 | SSL_free(conn->ssl); | |
6a31a31d | 1289 | BIO_free(conn->ssl_in); |
6fc6879b JM |
1290 | os_free(conn); |
1291 | return NULL; | |
1292 | } | |
1293 | ||
6a31a31d JM |
1294 | SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out); |
1295 | ||
6fc6879b JM |
1296 | return conn; |
1297 | } | |
1298 | ||
1299 | ||
1300 | void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn) | |
1301 | { | |
1302 | if (conn == NULL) | |
1303 | return; | |
acf36f31 JM |
1304 | if (conn->success_data) { |
1305 | /* | |
1306 | * Make sure ssl_clear_bad_session() does not remove this | |
1307 | * session. | |
1308 | */ | |
1309 | SSL_set_quiet_shutdown(conn->ssl, 1); | |
1310 | SSL_shutdown(conn->ssl); | |
1311 | } | |
6fc6879b JM |
1312 | SSL_free(conn->ssl); |
1313 | tls_engine_deinit(conn); | |
1314 | os_free(conn->subject_match); | |
1315 | os_free(conn->altsubject_match); | |
01f809c7 | 1316 | os_free(conn->suffix_match); |
cebee30f | 1317 | os_free(conn->domain_match); |
6fc6879b JM |
1318 | os_free(conn->session_ticket); |
1319 | os_free(conn); | |
1320 | } | |
1321 | ||
1322 | ||
1323 | int tls_connection_established(void *ssl_ctx, struct tls_connection *conn) | |
1324 | { | |
1325 | return conn ? SSL_is_init_finished(conn->ssl) : 0; | |
1326 | } | |
1327 | ||
1328 | ||
1329 | int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn) | |
1330 | { | |
1331 | if (conn == NULL) | |
1332 | return -1; | |
1333 | ||
1334 | /* Shutdown previous TLS connection without notifying the peer | |
1335 | * because the connection was already terminated in practice | |
1336 | * and "close notify" shutdown alert would confuse AS. */ | |
1337 | SSL_set_quiet_shutdown(conn->ssl, 1); | |
1338 | SSL_shutdown(conn->ssl); | |
a7803b0c | 1339 | return SSL_clear(conn->ssl) == 1 ? 0 : -1; |
6fc6879b JM |
1340 | } |
1341 | ||
1342 | ||
1343 | static int tls_match_altsubject_component(X509 *cert, int type, | |
1344 | const char *value, size_t len) | |
1345 | { | |
1346 | GENERAL_NAME *gen; | |
1347 | void *ext; | |
a8572960 AL |
1348 | int found = 0; |
1349 | stack_index_t i; | |
6fc6879b JM |
1350 | |
1351 | ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL); | |
1352 | ||
1353 | for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) { | |
1354 | gen = sk_GENERAL_NAME_value(ext, i); | |
1355 | if (gen->type != type) | |
1356 | continue; | |
1357 | if (os_strlen((char *) gen->d.ia5->data) == len && | |
1358 | os_memcmp(value, gen->d.ia5->data, len) == 0) | |
1359 | found++; | |
1360 | } | |
1361 | ||
1362 | return found; | |
1363 | } | |
1364 | ||
1365 | ||
1366 | static int tls_match_altsubject(X509 *cert, const char *match) | |
1367 | { | |
1368 | int type; | |
1369 | const char *pos, *end; | |
1370 | size_t len; | |
1371 | ||
1372 | pos = match; | |
1373 | do { | |
1374 | if (os_strncmp(pos, "EMAIL:", 6) == 0) { | |
1375 | type = GEN_EMAIL; | |
1376 | pos += 6; | |
1377 | } else if (os_strncmp(pos, "DNS:", 4) == 0) { | |
1378 | type = GEN_DNS; | |
1379 | pos += 4; | |
1380 | } else if (os_strncmp(pos, "URI:", 4) == 0) { | |
1381 | type = GEN_URI; | |
1382 | pos += 4; | |
1383 | } else { | |
1384 | wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName " | |
1385 | "match '%s'", pos); | |
1386 | return 0; | |
1387 | } | |
1388 | end = os_strchr(pos, ';'); | |
1389 | while (end) { | |
1390 | if (os_strncmp(end + 1, "EMAIL:", 6) == 0 || | |
1391 | os_strncmp(end + 1, "DNS:", 4) == 0 || | |
1392 | os_strncmp(end + 1, "URI:", 4) == 0) | |
1393 | break; | |
1394 | end = os_strchr(end + 1, ';'); | |
1395 | } | |
1396 | if (end) | |
1397 | len = end - pos; | |
1398 | else | |
1399 | len = os_strlen(pos); | |
1400 | if (tls_match_altsubject_component(cert, type, pos, len) > 0) | |
1401 | return 1; | |
1402 | pos = end + 1; | |
1403 | } while (end); | |
1404 | ||
1405 | return 0; | |
1406 | } | |
1407 | ||
1408 | ||
461e3ebe | 1409 | #ifndef CONFIG_NATIVE_WINDOWS |
cebee30f JM |
1410 | static int domain_suffix_match(const u8 *val, size_t len, const char *match, |
1411 | int full) | |
01f809c7 JM |
1412 | { |
1413 | size_t i, match_len; | |
1414 | ||
1415 | /* Check for embedded nuls that could mess up suffix matching */ | |
1416 | for (i = 0; i < len; i++) { | |
1417 | if (val[i] == '\0') { | |
1418 | wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject"); | |
1419 | return 0; | |
1420 | } | |
1421 | } | |
1422 | ||
1423 | match_len = os_strlen(match); | |
cebee30f | 1424 | if (match_len > len || (full && match_len != len)) |
01f809c7 JM |
1425 | return 0; |
1426 | ||
1427 | if (os_strncasecmp((const char *) val + len - match_len, match, | |
1428 | match_len) != 0) | |
1429 | return 0; /* no match */ | |
1430 | ||
1431 | if (match_len == len) | |
1432 | return 1; /* exact match */ | |
1433 | ||
1434 | if (val[len - match_len - 1] == '.') | |
1435 | return 1; /* full label match completes suffix match */ | |
1436 | ||
1437 | wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match"); | |
1438 | return 0; | |
1439 | } | |
461e3ebe | 1440 | #endif /* CONFIG_NATIVE_WINDOWS */ |
01f809c7 JM |
1441 | |
1442 | ||
cebee30f | 1443 | static int tls_match_suffix(X509 *cert, const char *match, int full) |
01f809c7 | 1444 | { |
461e3ebe JM |
1445 | #ifdef CONFIG_NATIVE_WINDOWS |
1446 | /* wincrypt.h has conflicting X509_NAME definition */ | |
1447 | return -1; | |
1448 | #else /* CONFIG_NATIVE_WINDOWS */ | |
01f809c7 JM |
1449 | GENERAL_NAME *gen; |
1450 | void *ext; | |
1451 | int i; | |
98a1571d | 1452 | stack_index_t j; |
01f809c7 JM |
1453 | int dns_name = 0; |
1454 | X509_NAME *name; | |
1455 | ||
cebee30f JM |
1456 | wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s", |
1457 | full ? "": "suffix ", match); | |
01f809c7 JM |
1458 | |
1459 | ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL); | |
1460 | ||
98a1571d JM |
1461 | for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) { |
1462 | gen = sk_GENERAL_NAME_value(ext, j); | |
01f809c7 JM |
1463 | if (gen->type != GEN_DNS) |
1464 | continue; | |
1465 | dns_name++; | |
1466 | wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName", | |
1467 | gen->d.dNSName->data, | |
1468 | gen->d.dNSName->length); | |
1469 | if (domain_suffix_match(gen->d.dNSName->data, | |
cebee30f JM |
1470 | gen->d.dNSName->length, match, full) == |
1471 | 1) { | |
1472 | wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found", | |
1473 | full ? "Match" : "Suffix match"); | |
01f809c7 JM |
1474 | return 1; |
1475 | } | |
1476 | } | |
1477 | ||
1478 | if (dns_name) { | |
1479 | wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched"); | |
1480 | return 0; | |
1481 | } | |
1482 | ||
1483 | name = X509_get_subject_name(cert); | |
1484 | i = -1; | |
1485 | for (;;) { | |
1486 | X509_NAME_ENTRY *e; | |
1487 | ASN1_STRING *cn; | |
1488 | ||
1489 | i = X509_NAME_get_index_by_NID(name, NID_commonName, i); | |
1490 | if (i == -1) | |
1491 | break; | |
1492 | e = X509_NAME_get_entry(name, i); | |
1493 | if (e == NULL) | |
1494 | continue; | |
1495 | cn = X509_NAME_ENTRY_get_data(e); | |
1496 | if (cn == NULL) | |
1497 | continue; | |
1498 | wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName", | |
1499 | cn->data, cn->length); | |
cebee30f JM |
1500 | if (domain_suffix_match(cn->data, cn->length, match, full) == 1) |
1501 | { | |
1502 | wpa_printf(MSG_DEBUG, "TLS: %s in commonName found", | |
1503 | full ? "Match" : "Suffix match"); | |
01f809c7 JM |
1504 | return 1; |
1505 | } | |
1506 | } | |
1507 | ||
cebee30f JM |
1508 | wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found", |
1509 | full ? "": "suffix "); | |
01f809c7 | 1510 | return 0; |
461e3ebe | 1511 | #endif /* CONFIG_NATIVE_WINDOWS */ |
01f809c7 JM |
1512 | } |
1513 | ||
1514 | ||
00468b46 JM |
1515 | static enum tls_fail_reason openssl_tls_fail_reason(int err) |
1516 | { | |
1517 | switch (err) { | |
1518 | case X509_V_ERR_CERT_REVOKED: | |
1519 | return TLS_FAIL_REVOKED; | |
1520 | case X509_V_ERR_CERT_NOT_YET_VALID: | |
1521 | case X509_V_ERR_CRL_NOT_YET_VALID: | |
1522 | return TLS_FAIL_NOT_YET_VALID; | |
1523 | case X509_V_ERR_CERT_HAS_EXPIRED: | |
1524 | case X509_V_ERR_CRL_HAS_EXPIRED: | |
1525 | return TLS_FAIL_EXPIRED; | |
1526 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
1527 | case X509_V_ERR_UNABLE_TO_GET_CRL: | |
1528 | case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: | |
1529 | case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: | |
1530 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: | |
1531 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: | |
1532 | case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: | |
1533 | case X509_V_ERR_CERT_CHAIN_TOO_LONG: | |
1534 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: | |
1535 | case X509_V_ERR_INVALID_CA: | |
1536 | return TLS_FAIL_UNTRUSTED; | |
1537 | case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: | |
1538 | case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: | |
1539 | case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: | |
1540 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
1541 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
1542 | case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: | |
1543 | case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: | |
1544 | case X509_V_ERR_CERT_UNTRUSTED: | |
1545 | case X509_V_ERR_CERT_REJECTED: | |
1546 | return TLS_FAIL_BAD_CERTIFICATE; | |
1547 | default: | |
1548 | return TLS_FAIL_UNSPECIFIED; | |
1549 | } | |
1550 | } | |
1551 | ||
1552 | ||
1553 | static struct wpabuf * get_x509_cert(X509 *cert) | |
1554 | { | |
1555 | struct wpabuf *buf; | |
1556 | u8 *tmp; | |
1557 | ||
1558 | int cert_len = i2d_X509(cert, NULL); | |
1559 | if (cert_len <= 0) | |
1560 | return NULL; | |
1561 | ||
1562 | buf = wpabuf_alloc(cert_len); | |
1563 | if (buf == NULL) | |
1564 | return NULL; | |
1565 | ||
1566 | tmp = wpabuf_put(buf, cert_len); | |
1567 | i2d_X509(cert, &tmp); | |
1568 | return buf; | |
1569 | } | |
1570 | ||
1571 | ||
1572 | static void openssl_tls_fail_event(struct tls_connection *conn, | |
1573 | X509 *err_cert, int err, int depth, | |
1574 | const char *subject, const char *err_str, | |
1575 | enum tls_fail_reason reason) | |
1576 | { | |
1577 | union tls_event_data ev; | |
1578 | struct wpabuf *cert = NULL; | |
7c0e1e27 | 1579 | struct tls_context *context = conn->context; |
00468b46 | 1580 | |
7c0e1e27 | 1581 | if (context->event_cb == NULL) |
00468b46 JM |
1582 | return; |
1583 | ||
1584 | cert = get_x509_cert(err_cert); | |
1585 | os_memset(&ev, 0, sizeof(ev)); | |
1586 | ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ? | |
1587 | reason : openssl_tls_fail_reason(err); | |
1588 | ev.cert_fail.depth = depth; | |
1589 | ev.cert_fail.subject = subject; | |
1590 | ev.cert_fail.reason_txt = err_str; | |
1591 | ev.cert_fail.cert = cert; | |
7c0e1e27 | 1592 | context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev); |
00468b46 JM |
1593 | wpabuf_free(cert); |
1594 | } | |
1595 | ||
1596 | ||
1597 | static void openssl_tls_cert_event(struct tls_connection *conn, | |
1598 | X509 *err_cert, int depth, | |
1599 | const char *subject) | |
1600 | { | |
1601 | struct wpabuf *cert = NULL; | |
1602 | union tls_event_data ev; | |
7c0e1e27 | 1603 | struct tls_context *context = conn->context; |
d07d3fbd JM |
1604 | char *altsubject[TLS_MAX_ALT_SUBJECT]; |
1605 | int alt, num_altsubject = 0; | |
1606 | GENERAL_NAME *gen; | |
1607 | void *ext; | |
1608 | stack_index_t i; | |
00468b46 JM |
1609 | #ifdef CONFIG_SHA256 |
1610 | u8 hash[32]; | |
1611 | #endif /* CONFIG_SHA256 */ | |
1612 | ||
7c0e1e27 | 1613 | if (context->event_cb == NULL) |
00468b46 JM |
1614 | return; |
1615 | ||
1616 | os_memset(&ev, 0, sizeof(ev)); | |
3c108b75 JM |
1617 | if (conn->cert_probe || (conn->flags & TLS_CONN_EXT_CERT_CHECK) || |
1618 | context->cert_in_cb) { | |
00468b46 JM |
1619 | cert = get_x509_cert(err_cert); |
1620 | ev.peer_cert.cert = cert; | |
1621 | } | |
1622 | #ifdef CONFIG_SHA256 | |
1623 | if (cert) { | |
1624 | const u8 *addr[1]; | |
1625 | size_t len[1]; | |
1626 | addr[0] = wpabuf_head(cert); | |
1627 | len[0] = wpabuf_len(cert); | |
1628 | if (sha256_vector(1, addr, len, hash) == 0) { | |
1629 | ev.peer_cert.hash = hash; | |
1630 | ev.peer_cert.hash_len = sizeof(hash); | |
1631 | } | |
1632 | } | |
1633 | #endif /* CONFIG_SHA256 */ | |
1634 | ev.peer_cert.depth = depth; | |
1635 | ev.peer_cert.subject = subject; | |
d07d3fbd JM |
1636 | |
1637 | ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL); | |
1638 | for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) { | |
1639 | char *pos; | |
1640 | ||
1641 | if (num_altsubject == TLS_MAX_ALT_SUBJECT) | |
1642 | break; | |
1643 | gen = sk_GENERAL_NAME_value(ext, i); | |
1644 | if (gen->type != GEN_EMAIL && | |
1645 | gen->type != GEN_DNS && | |
1646 | gen->type != GEN_URI) | |
1647 | continue; | |
1648 | ||
1649 | pos = os_malloc(10 + gen->d.ia5->length + 1); | |
1650 | if (pos == NULL) | |
1651 | break; | |
1652 | altsubject[num_altsubject++] = pos; | |
1653 | ||
1654 | switch (gen->type) { | |
1655 | case GEN_EMAIL: | |
1656 | os_memcpy(pos, "EMAIL:", 6); | |
1657 | pos += 6; | |
1658 | break; | |
1659 | case GEN_DNS: | |
1660 | os_memcpy(pos, "DNS:", 4); | |
1661 | pos += 4; | |
1662 | break; | |
1663 | case GEN_URI: | |
1664 | os_memcpy(pos, "URI:", 4); | |
1665 | pos += 4; | |
1666 | break; | |
1667 | } | |
1668 | ||
1669 | os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length); | |
1670 | pos += gen->d.ia5->length; | |
1671 | *pos = '\0'; | |
1672 | } | |
1673 | ||
1674 | for (alt = 0; alt < num_altsubject; alt++) | |
1675 | ev.peer_cert.altsubject[alt] = altsubject[alt]; | |
1676 | ev.peer_cert.num_altsubject = num_altsubject; | |
1677 | ||
7c0e1e27 | 1678 | context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev); |
00468b46 | 1679 | wpabuf_free(cert); |
d07d3fbd JM |
1680 | for (alt = 0; alt < num_altsubject; alt++) |
1681 | os_free(altsubject[alt]); | |
00468b46 JM |
1682 | } |
1683 | ||
1684 | ||
6fc6879b JM |
1685 | static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx) |
1686 | { | |
1687 | char buf[256]; | |
1688 | X509 *err_cert; | |
1689 | int err, depth; | |
1690 | SSL *ssl; | |
1691 | struct tls_connection *conn; | |
7c0e1e27 | 1692 | struct tls_context *context; |
cebee30f | 1693 | char *match, *altmatch, *suffix_match, *domain_match; |
00468b46 | 1694 | const char *err_str; |
6fc6879b JM |
1695 | |
1696 | err_cert = X509_STORE_CTX_get_current_cert(x509_ctx); | |
97efe70b EL |
1697 | if (!err_cert) |
1698 | return 0; | |
1699 | ||
6fc6879b JM |
1700 | err = X509_STORE_CTX_get_error(x509_ctx); |
1701 | depth = X509_STORE_CTX_get_error_depth(x509_ctx); | |
1702 | ssl = X509_STORE_CTX_get_ex_data(x509_ctx, | |
1703 | SSL_get_ex_data_X509_STORE_CTX_idx()); | |
1704 | X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf)); | |
1705 | ||
1706 | conn = SSL_get_app_data(ssl); | |
0bdaa741 JM |
1707 | if (conn == NULL) |
1708 | return 0; | |
080585c0 JM |
1709 | |
1710 | if (depth == 0) | |
1711 | conn->peer_cert = err_cert; | |
1712 | else if (depth == 1) | |
1713 | conn->peer_issuer = err_cert; | |
6bf61fb2 JM |
1714 | else if (depth == 2) |
1715 | conn->peer_issuer_issuer = err_cert; | |
080585c0 | 1716 | |
7c0e1e27 | 1717 | context = conn->context; |
0bdaa741 JM |
1718 | match = conn->subject_match; |
1719 | altmatch = conn->altsubject_match; | |
01f809c7 | 1720 | suffix_match = conn->suffix_match; |
cebee30f | 1721 | domain_match = conn->domain_match; |
6fc6879b | 1722 | |
00468b46 JM |
1723 | if (!preverify_ok && !conn->ca_cert_verify) |
1724 | preverify_ok = 1; | |
1725 | if (!preverify_ok && depth > 0 && conn->server_cert_only) | |
1726 | preverify_ok = 1; | |
235279e7 JM |
1727 | if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) && |
1728 | (err == X509_V_ERR_CERT_HAS_EXPIRED || | |
1729 | err == X509_V_ERR_CERT_NOT_YET_VALID)) { | |
1730 | wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity " | |
1731 | "time mismatch"); | |
1732 | preverify_ok = 1; | |
1733 | } | |
00468b46 JM |
1734 | |
1735 | err_str = X509_verify_cert_error_string(err); | |
1736 | ||
1737 | #ifdef CONFIG_SHA256 | |
00033a09 RA |
1738 | /* |
1739 | * Do not require preverify_ok so we can explicity allow otherwise | |
1740 | * invalid pinned server certificates. | |
1741 | */ | |
1742 | if (depth == 0 && conn->server_cert_only) { | |
00468b46 JM |
1743 | struct wpabuf *cert; |
1744 | cert = get_x509_cert(err_cert); | |
1745 | if (!cert) { | |
1746 | wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch " | |
1747 | "server certificate data"); | |
6fc6879b | 1748 | preverify_ok = 0; |
00468b46 JM |
1749 | } else { |
1750 | u8 hash[32]; | |
1751 | const u8 *addr[1]; | |
1752 | size_t len[1]; | |
1753 | addr[0] = wpabuf_head(cert); | |
1754 | len[0] = wpabuf_len(cert); | |
1755 | if (sha256_vector(1, addr, len, hash) < 0 || | |
1756 | os_memcmp(conn->srv_cert_hash, hash, 32) != 0) { | |
1757 | err_str = "Server certificate mismatch"; | |
1758 | err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN; | |
1759 | preverify_ok = 0; | |
00033a09 RA |
1760 | } else if (!preverify_ok) { |
1761 | /* | |
1762 | * Certificate matches pinned certificate, allow | |
1763 | * regardless of other problems. | |
1764 | */ | |
1765 | wpa_printf(MSG_DEBUG, | |
1766 | "OpenSSL: Ignore validation issues for a pinned server certificate"); | |
1767 | preverify_ok = 1; | |
00468b46 JM |
1768 | } |
1769 | wpabuf_free(cert); | |
6fc6879b JM |
1770 | } |
1771 | } | |
00468b46 JM |
1772 | #endif /* CONFIG_SHA256 */ |
1773 | ||
1774 | if (!preverify_ok) { | |
1775 | wpa_printf(MSG_WARNING, "TLS: Certificate verification failed," | |
1776 | " error %d (%s) depth %d for '%s'", err, err_str, | |
1777 | depth, buf); | |
1778 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1779 | err_str, TLS_FAIL_UNSPECIFIED); | |
1780 | return preverify_ok; | |
1781 | } | |
1782 | ||
1783 | wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d " | |
1784 | "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'", | |
1785 | preverify_ok, err, err_str, | |
1786 | conn->ca_cert_verify, depth, buf); | |
1787 | if (depth == 0 && match && os_strstr(buf, match) == NULL) { | |
1788 | wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not " | |
1789 | "match with '%s'", buf, match); | |
1790 | preverify_ok = 0; | |
1791 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1792 | "Subject mismatch", | |
1793 | TLS_FAIL_SUBJECT_MISMATCH); | |
1794 | } else if (depth == 0 && altmatch && | |
1795 | !tls_match_altsubject(err_cert, altmatch)) { | |
1796 | wpa_printf(MSG_WARNING, "TLS: altSubjectName match " | |
1797 | "'%s' not found", altmatch); | |
1798 | preverify_ok = 0; | |
1799 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1800 | "AltSubject mismatch", | |
1801 | TLS_FAIL_ALTSUBJECT_MISMATCH); | |
01f809c7 | 1802 | } else if (depth == 0 && suffix_match && |
cebee30f | 1803 | !tls_match_suffix(err_cert, suffix_match, 0)) { |
01f809c7 JM |
1804 | wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found", |
1805 | suffix_match); | |
1806 | preverify_ok = 0; | |
1807 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1808 | "Domain suffix mismatch", | |
1809 | TLS_FAIL_DOMAIN_SUFFIX_MISMATCH); | |
cebee30f JM |
1810 | } else if (depth == 0 && domain_match && |
1811 | !tls_match_suffix(err_cert, domain_match, 1)) { | |
1812 | wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found", | |
1813 | domain_match); | |
1814 | preverify_ok = 0; | |
1815 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1816 | "Domain mismatch", | |
1817 | TLS_FAIL_DOMAIN_MISMATCH); | |
00468b46 JM |
1818 | } else |
1819 | openssl_tls_cert_event(conn, err_cert, depth, buf); | |
1820 | ||
1821 | if (conn->cert_probe && preverify_ok && depth == 0) { | |
1822 | wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate " | |
1823 | "on probe-only run"); | |
1824 | preverify_ok = 0; | |
1825 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1826 | "Server certificate chain probe", | |
1827 | TLS_FAIL_SERVER_CHAIN_PROBE); | |
1828 | } | |
6fc6879b | 1829 | |
bdee6ca0 | 1830 | #ifdef OPENSSL_IS_BORINGSSL |
213e158c JM |
1831 | if (depth == 0 && (conn->flags & TLS_CONN_REQUEST_OCSP) && |
1832 | preverify_ok) { | |
bdee6ca0 JM |
1833 | enum ocsp_result res; |
1834 | ||
213e158c JM |
1835 | res = check_ocsp_resp(conn->ssl_ctx, conn->ssl, err_cert, |
1836 | conn->peer_issuer, | |
1837 | conn->peer_issuer_issuer); | |
bdee6ca0 JM |
1838 | if (res == OCSP_REVOKED) { |
1839 | preverify_ok = 0; | |
1840 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1841 | "certificate revoked", | |
1842 | TLS_FAIL_REVOKED); | |
1843 | if (err == X509_V_OK) | |
1844 | X509_STORE_CTX_set_error( | |
1845 | x509_ctx, X509_V_ERR_CERT_REVOKED); | |
1846 | } else if (res != OCSP_GOOD && | |
1847 | (conn->flags & TLS_CONN_REQUIRE_OCSP)) { | |
1848 | preverify_ok = 0; | |
1849 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1850 | "bad certificate status response", | |
1851 | TLS_FAIL_UNSPECIFIED); | |
1852 | } | |
1853 | } | |
1854 | #endif /* OPENSSL_IS_BORINGSSL */ | |
1855 | ||
3c108b75 | 1856 | if (depth == 0 && preverify_ok && context->event_cb != NULL) |
7c0e1e27 PS |
1857 | context->event_cb(context->cb_ctx, |
1858 | TLS_CERT_CHAIN_SUCCESS, NULL); | |
dd7fec1f | 1859 | |
6fc6879b JM |
1860 | return preverify_ok; |
1861 | } | |
1862 | ||
1863 | ||
1864 | #ifndef OPENSSL_NO_STDIO | |
bd9b8b2b | 1865 | static int tls_load_ca_der(struct tls_data *data, const char *ca_cert) |
6fc6879b | 1866 | { |
bd9b8b2b | 1867 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
1868 | X509_LOOKUP *lookup; |
1869 | int ret = 0; | |
1870 | ||
68ae4773 | 1871 | lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx), |
6fc6879b JM |
1872 | X509_LOOKUP_file()); |
1873 | if (lookup == NULL) { | |
1874 | tls_show_errors(MSG_WARNING, __func__, | |
1875 | "Failed add lookup for X509 store"); | |
1876 | return -1; | |
1877 | } | |
1878 | ||
1879 | if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) { | |
1880 | unsigned long err = ERR_peek_error(); | |
1881 | tls_show_errors(MSG_WARNING, __func__, | |
1882 | "Failed load CA in DER format"); | |
1883 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
1884 | ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
1885 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring " | |
1886 | "cert already in hash table error", | |
1887 | __func__); | |
1888 | } else | |
1889 | ret = -1; | |
1890 | } | |
1891 | ||
1892 | return ret; | |
1893 | } | |
1894 | #endif /* OPENSSL_NO_STDIO */ | |
1895 | ||
1896 | ||
bd9b8b2b JM |
1897 | static int tls_connection_ca_cert(struct tls_data *data, |
1898 | struct tls_connection *conn, | |
6fc6879b JM |
1899 | const char *ca_cert, const u8 *ca_cert_blob, |
1900 | size_t ca_cert_blob_len, const char *ca_path) | |
1901 | { | |
bd9b8b2b | 1902 | SSL_CTX *ssl_ctx = data->ssl; |
68ae4773 | 1903 | X509_STORE *store; |
6fc6879b JM |
1904 | |
1905 | /* | |
1906 | * Remove previously configured trusted CA certificates before adding | |
1907 | * new ones. | |
1908 | */ | |
68ae4773 JM |
1909 | store = X509_STORE_new(); |
1910 | if (store == NULL) { | |
6fc6879b JM |
1911 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new " |
1912 | "certificate store", __func__); | |
1913 | return -1; | |
1914 | } | |
68ae4773 | 1915 | SSL_CTX_set_cert_store(ssl_ctx, store); |
6fc6879b | 1916 | |
00468b46 JM |
1917 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); |
1918 | conn->ca_cert_verify = 1; | |
1919 | ||
1920 | if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) { | |
1921 | wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate " | |
1922 | "chain"); | |
1923 | conn->cert_probe = 1; | |
1924 | conn->ca_cert_verify = 0; | |
1925 | return 0; | |
1926 | } | |
1927 | ||
1928 | if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) { | |
1929 | #ifdef CONFIG_SHA256 | |
1930 | const char *pos = ca_cert + 7; | |
1931 | if (os_strncmp(pos, "server/sha256/", 14) != 0) { | |
1932 | wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert " | |
1933 | "hash value '%s'", ca_cert); | |
1934 | return -1; | |
1935 | } | |
1936 | pos += 14; | |
1937 | if (os_strlen(pos) != 32 * 2) { | |
1938 | wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 " | |
1939 | "hash length in ca_cert '%s'", ca_cert); | |
1940 | return -1; | |
1941 | } | |
1942 | if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) { | |
1943 | wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash " | |
1944 | "value in ca_cert '%s'", ca_cert); | |
1945 | return -1; | |
1946 | } | |
1947 | conn->server_cert_only = 1; | |
1948 | wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server " | |
1949 | "certificate match"); | |
1950 | return 0; | |
1951 | #else /* CONFIG_SHA256 */ | |
1952 | wpa_printf(MSG_INFO, "No SHA256 included in the build - " | |
1953 | "cannot validate server certificate hash"); | |
1954 | return -1; | |
1955 | #endif /* CONFIG_SHA256 */ | |
1956 | } | |
1957 | ||
6fc6879b | 1958 | if (ca_cert_blob) { |
fee31f76 JM |
1959 | X509 *cert = d2i_X509(NULL, |
1960 | (const unsigned char **) &ca_cert_blob, | |
6fc6879b JM |
1961 | ca_cert_blob_len); |
1962 | if (cert == NULL) { | |
1963 | tls_show_errors(MSG_WARNING, __func__, | |
1964 | "Failed to parse ca_cert_blob"); | |
1965 | return -1; | |
1966 | } | |
1967 | ||
68ae4773 JM |
1968 | if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), |
1969 | cert)) { | |
6fc6879b JM |
1970 | unsigned long err = ERR_peek_error(); |
1971 | tls_show_errors(MSG_WARNING, __func__, | |
1972 | "Failed to add ca_cert_blob to " | |
1973 | "certificate store"); | |
1974 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
1975 | ERR_GET_REASON(err) == | |
1976 | X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
1977 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring " | |
1978 | "cert already in hash table error", | |
1979 | __func__); | |
1980 | } else { | |
1981 | X509_free(cert); | |
1982 | return -1; | |
1983 | } | |
1984 | } | |
1985 | X509_free(cert); | |
1986 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob " | |
1987 | "to certificate store", __func__); | |
6fc6879b JM |
1988 | return 0; |
1989 | } | |
1990 | ||
2a0cd067 DS |
1991 | #ifdef ANDROID |
1992 | if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) { | |
1993 | BIO *bio = BIO_from_keystore(&ca_cert[11]); | |
1994 | STACK_OF(X509_INFO) *stack = NULL; | |
a8572960 | 1995 | stack_index_t i; |
2a0cd067 DS |
1996 | |
1997 | if (bio) { | |
1998 | stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL); | |
1999 | BIO_free(bio); | |
2000 | } | |
2001 | if (!stack) | |
2002 | return -1; | |
2003 | ||
2004 | for (i = 0; i < sk_X509_INFO_num(stack); ++i) { | |
2005 | X509_INFO *info = sk_X509_INFO_value(stack, i); | |
2006 | if (info->x509) { | |
2007 | X509_STORE_add_cert(ssl_ctx->cert_store, | |
2008 | info->x509); | |
2009 | } | |
2010 | if (info->crl) { | |
2011 | X509_STORE_add_crl(ssl_ctx->cert_store, | |
2012 | info->crl); | |
2013 | } | |
2014 | } | |
2015 | sk_X509_INFO_pop_free(stack, X509_INFO_free); | |
2016 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); | |
2017 | return 0; | |
2018 | } | |
2019 | #endif /* ANDROID */ | |
2020 | ||
6fc6879b JM |
2021 | #ifdef CONFIG_NATIVE_WINDOWS |
2022 | if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) == | |
2023 | 0) { | |
2024 | wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from " | |
2025 | "system certificate store"); | |
6fc6879b JM |
2026 | return 0; |
2027 | } | |
2028 | #endif /* CONFIG_NATIVE_WINDOWS */ | |
2029 | ||
2030 | if (ca_cert || ca_path) { | |
2031 | #ifndef OPENSSL_NO_STDIO | |
2032 | if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) != | |
2033 | 1) { | |
2034 | tls_show_errors(MSG_WARNING, __func__, | |
2035 | "Failed to load root certificates"); | |
2036 | if (ca_cert && | |
bd9b8b2b | 2037 | tls_load_ca_der(data, ca_cert) == 0) { |
6fc6879b JM |
2038 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded " |
2039 | "DER format CA certificate", | |
2040 | __func__); | |
2041 | } else | |
2042 | return -1; | |
2043 | } else { | |
2044 | wpa_printf(MSG_DEBUG, "TLS: Trusted root " | |
2045 | "certificate(s) loaded"); | |
bd9b8b2b | 2046 | tls_get_errors(data); |
6fc6879b | 2047 | } |
6fc6879b JM |
2048 | #else /* OPENSSL_NO_STDIO */ |
2049 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", | |
2050 | __func__); | |
2051 | return -1; | |
2052 | #endif /* OPENSSL_NO_STDIO */ | |
2053 | } else { | |
2054 | /* No ca_cert configured - do not try to verify server | |
2055 | * certificate */ | |
00468b46 | 2056 | conn->ca_cert_verify = 0; |
6fc6879b JM |
2057 | } |
2058 | ||
2059 | return 0; | |
2060 | } | |
2061 | ||
2062 | ||
bd9b8b2b | 2063 | static int tls_global_ca_cert(struct tls_data *data, const char *ca_cert) |
6fc6879b | 2064 | { |
bd9b8b2b JM |
2065 | SSL_CTX *ssl_ctx = data->ssl; |
2066 | ||
6fc6879b JM |
2067 | if (ca_cert) { |
2068 | if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1) | |
2069 | { | |
2070 | tls_show_errors(MSG_WARNING, __func__, | |
2071 | "Failed to load root certificates"); | |
2072 | return -1; | |
2073 | } | |
2074 | ||
2075 | wpa_printf(MSG_DEBUG, "TLS: Trusted root " | |
2076 | "certificate(s) loaded"); | |
2077 | ||
2078 | #ifndef OPENSSL_NO_STDIO | |
2079 | /* Add the same CAs to the client certificate requests */ | |
2080 | SSL_CTX_set_client_CA_list(ssl_ctx, | |
2081 | SSL_load_client_CA_file(ca_cert)); | |
2082 | #endif /* OPENSSL_NO_STDIO */ | |
2083 | } | |
2084 | ||
2085 | return 0; | |
2086 | } | |
2087 | ||
2088 | ||
2089 | int tls_global_set_verify(void *ssl_ctx, int check_crl) | |
2090 | { | |
2091 | int flags; | |
2092 | ||
2093 | if (check_crl) { | |
bd9b8b2b JM |
2094 | struct tls_data *data = ssl_ctx; |
2095 | X509_STORE *cs = SSL_CTX_get_cert_store(data->ssl); | |
6fc6879b JM |
2096 | if (cs == NULL) { |
2097 | tls_show_errors(MSG_INFO, __func__, "Failed to get " | |
2098 | "certificate store when enabling " | |
2099 | "check_crl"); | |
2100 | return -1; | |
2101 | } | |
2102 | flags = X509_V_FLAG_CRL_CHECK; | |
2103 | if (check_crl == 2) | |
2104 | flags |= X509_V_FLAG_CRL_CHECK_ALL; | |
2105 | X509_STORE_set_flags(cs, flags); | |
2106 | } | |
2107 | return 0; | |
2108 | } | |
2109 | ||
2110 | ||
2111 | static int tls_connection_set_subject_match(struct tls_connection *conn, | |
2112 | const char *subject_match, | |
01f809c7 | 2113 | const char *altsubject_match, |
cebee30f JM |
2114 | const char *suffix_match, |
2115 | const char *domain_match) | |
6fc6879b JM |
2116 | { |
2117 | os_free(conn->subject_match); | |
2118 | conn->subject_match = NULL; | |
2119 | if (subject_match) { | |
2120 | conn->subject_match = os_strdup(subject_match); | |
2121 | if (conn->subject_match == NULL) | |
2122 | return -1; | |
2123 | } | |
2124 | ||
2125 | os_free(conn->altsubject_match); | |
2126 | conn->altsubject_match = NULL; | |
2127 | if (altsubject_match) { | |
2128 | conn->altsubject_match = os_strdup(altsubject_match); | |
2129 | if (conn->altsubject_match == NULL) | |
2130 | return -1; | |
2131 | } | |
2132 | ||
01f809c7 JM |
2133 | os_free(conn->suffix_match); |
2134 | conn->suffix_match = NULL; | |
2135 | if (suffix_match) { | |
2136 | conn->suffix_match = os_strdup(suffix_match); | |
2137 | if (conn->suffix_match == NULL) | |
2138 | return -1; | |
2139 | } | |
2140 | ||
cebee30f JM |
2141 | os_free(conn->domain_match); |
2142 | conn->domain_match = NULL; | |
2143 | if (domain_match) { | |
2144 | conn->domain_match = os_strdup(domain_match); | |
2145 | if (conn->domain_match == NULL) | |
2146 | return -1; | |
2147 | } | |
2148 | ||
6fc6879b JM |
2149 | return 0; |
2150 | } | |
2151 | ||
2152 | ||
93bc6549 JM |
2153 | static void tls_set_conn_flags(SSL *ssl, unsigned int flags) |
2154 | { | |
2155 | #ifdef SSL_OP_NO_TICKET | |
2156 | if (flags & TLS_CONN_DISABLE_SESSION_TICKET) | |
2157 | SSL_set_options(ssl, SSL_OP_NO_TICKET); | |
2158 | #ifdef SSL_clear_options | |
2159 | else | |
2160 | SSL_clear_options(ssl, SSL_OP_NO_TICKET); | |
2161 | #endif /* SSL_clear_options */ | |
2162 | #endif /* SSL_OP_NO_TICKET */ | |
2163 | ||
2164 | #ifdef SSL_OP_NO_TLSv1 | |
2165 | if (flags & TLS_CONN_DISABLE_TLSv1_0) | |
2166 | SSL_set_options(ssl, SSL_OP_NO_TLSv1); | |
2167 | else | |
2168 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1); | |
2169 | #endif /* SSL_OP_NO_TLSv1 */ | |
2170 | #ifdef SSL_OP_NO_TLSv1_1 | |
2171 | if (flags & TLS_CONN_DISABLE_TLSv1_1) | |
2172 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_1); | |
2173 | else | |
2174 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1_1); | |
2175 | #endif /* SSL_OP_NO_TLSv1_1 */ | |
2176 | #ifdef SSL_OP_NO_TLSv1_2 | |
2177 | if (flags & TLS_CONN_DISABLE_TLSv1_2) | |
2178 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_2); | |
2179 | else | |
2180 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1_2); | |
2181 | #endif /* SSL_OP_NO_TLSv1_2 */ | |
2182 | } | |
2183 | ||
2184 | ||
6fc6879b | 2185 | int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn, |
bfbebd26 JM |
2186 | int verify_peer, unsigned int flags, |
2187 | const u8 *session_ctx, size_t session_ctx_len) | |
6fc6879b | 2188 | { |
bf206cad | 2189 | static int counter = 0; |
acf36f31 | 2190 | struct tls_data *data = ssl_ctx; |
bf206cad | 2191 | |
6fc6879b JM |
2192 | if (conn == NULL) |
2193 | return -1; | |
2194 | ||
2195 | if (verify_peer) { | |
00468b46 | 2196 | conn->ca_cert_verify = 1; |
6fc6879b JM |
2197 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER | |
2198 | SSL_VERIFY_FAIL_IF_NO_PEER_CERT | | |
2199 | SSL_VERIFY_CLIENT_ONCE, tls_verify_cb); | |
2200 | } else { | |
00468b46 | 2201 | conn->ca_cert_verify = 0; |
6fc6879b JM |
2202 | SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL); |
2203 | } | |
2204 | ||
93bc6549 JM |
2205 | tls_set_conn_flags(conn->ssl, flags); |
2206 | conn->flags = flags; | |
2207 | ||
6fc6879b JM |
2208 | SSL_set_accept_state(conn->ssl); |
2209 | ||
acf36f31 JM |
2210 | if (data->tls_session_lifetime == 0) { |
2211 | /* | |
2212 | * Set session id context to a unique value to make sure | |
2213 | * session resumption cannot be used either through session | |
2214 | * caching or TLS ticket extension. | |
2215 | */ | |
2216 | counter++; | |
2217 | SSL_set_session_id_context(conn->ssl, | |
2218 | (const unsigned char *) &counter, | |
2219 | sizeof(counter)); | |
2220 | } else if (session_ctx) { | |
2221 | SSL_set_session_id_context(conn->ssl, session_ctx, | |
2222 | session_ctx_len); | |
2223 | } | |
bf206cad | 2224 | |
6fc6879b JM |
2225 | return 0; |
2226 | } | |
2227 | ||
2228 | ||
2229 | static int tls_connection_client_cert(struct tls_connection *conn, | |
2230 | const char *client_cert, | |
2231 | const u8 *client_cert_blob, | |
2232 | size_t client_cert_blob_len) | |
2233 | { | |
2234 | if (client_cert == NULL && client_cert_blob == NULL) | |
2235 | return 0; | |
2236 | ||
21cb63ff JM |
2237 | #ifdef PKCS12_FUNCS |
2238 | #if OPENSSL_VERSION_NUMBER < 0x10002000L | |
2239 | /* | |
2240 | * Clear previously set extra chain certificates, if any, from PKCS#12 | |
2241 | * processing in tls_parse_pkcs12() to allow OpenSSL to build a new | |
2242 | * chain properly. | |
2243 | */ | |
2244 | SSL_CTX_clear_extra_chain_certs(conn->ssl_ctx); | |
2245 | #endif /* OPENSSL_VERSION_NUMBER < 0x10002000L */ | |
2246 | #endif /* PKCS12_FUNCS */ | |
2247 | ||
6fc6879b JM |
2248 | if (client_cert_blob && |
2249 | SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob, | |
2250 | client_cert_blob_len) == 1) { | |
2251 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> " | |
2252 | "OK"); | |
2253 | return 0; | |
2254 | } else if (client_cert_blob) { | |
2255 | tls_show_errors(MSG_DEBUG, __func__, | |
2256 | "SSL_use_certificate_ASN1 failed"); | |
2257 | } | |
2258 | ||
2259 | if (client_cert == NULL) | |
2260 | return -1; | |
2261 | ||
2a0cd067 DS |
2262 | #ifdef ANDROID |
2263 | if (os_strncmp("keystore://", client_cert, 11) == 0) { | |
2264 | BIO *bio = BIO_from_keystore(&client_cert[11]); | |
2265 | X509 *x509 = NULL; | |
2266 | int ret = -1; | |
2267 | if (bio) { | |
2268 | x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL); | |
2269 | BIO_free(bio); | |
2270 | } | |
2271 | if (x509) { | |
2272 | if (SSL_use_certificate(conn->ssl, x509) == 1) | |
2273 | ret = 0; | |
2274 | X509_free(x509); | |
2275 | } | |
2276 | return ret; | |
2277 | } | |
2278 | #endif /* ANDROID */ | |
2279 | ||
6fc6879b JM |
2280 | #ifndef OPENSSL_NO_STDIO |
2281 | if (SSL_use_certificate_file(conn->ssl, client_cert, | |
2282 | SSL_FILETYPE_ASN1) == 1) { | |
2283 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)" | |
2284 | " --> OK"); | |
2285 | return 0; | |
6fc6879b JM |
2286 | } |
2287 | ||
2288 | if (SSL_use_certificate_file(conn->ssl, client_cert, | |
2289 | SSL_FILETYPE_PEM) == 1) { | |
effab86f | 2290 | ERR_clear_error(); |
6fc6879b JM |
2291 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)" |
2292 | " --> OK"); | |
2293 | return 0; | |
6fc6879b | 2294 | } |
effab86f JM |
2295 | |
2296 | tls_show_errors(MSG_DEBUG, __func__, | |
2297 | "SSL_use_certificate_file failed"); | |
6fc6879b JM |
2298 | #else /* OPENSSL_NO_STDIO */ |
2299 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__); | |
2300 | #endif /* OPENSSL_NO_STDIO */ | |
2301 | ||
2302 | return -1; | |
2303 | } | |
2304 | ||
2305 | ||
bd9b8b2b JM |
2306 | static int tls_global_client_cert(struct tls_data *data, |
2307 | const char *client_cert) | |
6fc6879b JM |
2308 | { |
2309 | #ifndef OPENSSL_NO_STDIO | |
bd9b8b2b JM |
2310 | SSL_CTX *ssl_ctx = data->ssl; |
2311 | ||
6fc6879b JM |
2312 | if (client_cert == NULL) |
2313 | return 0; | |
2314 | ||
2315 | if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert, | |
2316 | SSL_FILETYPE_ASN1) != 1 && | |
65897747 | 2317 | SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 && |
6fc6879b JM |
2318 | SSL_CTX_use_certificate_file(ssl_ctx, client_cert, |
2319 | SSL_FILETYPE_PEM) != 1) { | |
2320 | tls_show_errors(MSG_INFO, __func__, | |
2321 | "Failed to load client certificate"); | |
2322 | return -1; | |
2323 | } | |
2324 | return 0; | |
2325 | #else /* OPENSSL_NO_STDIO */ | |
2326 | if (client_cert == NULL) | |
2327 | return 0; | |
2328 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__); | |
2329 | return -1; | |
2330 | #endif /* OPENSSL_NO_STDIO */ | |
2331 | } | |
2332 | ||
2333 | ||
2334 | static int tls_passwd_cb(char *buf, int size, int rwflag, void *password) | |
2335 | { | |
2336 | if (password == NULL) { | |
2337 | return 0; | |
2338 | } | |
2339 | os_strlcpy(buf, (char *) password, size); | |
2340 | return os_strlen(buf); | |
2341 | } | |
2342 | ||
2343 | ||
2344 | #ifdef PKCS12_FUNCS | |
bd9b8b2b | 2345 | static int tls_parse_pkcs12(struct tls_data *data, SSL *ssl, PKCS12 *p12, |
6fc6879b JM |
2346 | const char *passwd) |
2347 | { | |
2348 | EVP_PKEY *pkey; | |
2349 | X509 *cert; | |
2350 | STACK_OF(X509) *certs; | |
2351 | int res = 0; | |
2352 | char buf[256]; | |
2353 | ||
2354 | pkey = NULL; | |
2355 | cert = NULL; | |
2356 | certs = NULL; | |
c07e7b43 JM |
2357 | if (!passwd) |
2358 | passwd = ""; | |
6fc6879b JM |
2359 | if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) { |
2360 | tls_show_errors(MSG_DEBUG, __func__, | |
2361 | "Failed to parse PKCS12 file"); | |
2362 | PKCS12_free(p12); | |
2363 | return -1; | |
2364 | } | |
2365 | wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data"); | |
2366 | ||
2367 | if (cert) { | |
2368 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
2369 | sizeof(buf)); | |
2370 | wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: " | |
2371 | "subject='%s'", buf); | |
2372 | if (ssl) { | |
2373 | if (SSL_use_certificate(ssl, cert) != 1) | |
2374 | res = -1; | |
2375 | } else { | |
bd9b8b2b | 2376 | if (SSL_CTX_use_certificate(data->ssl, cert) != 1) |
6fc6879b JM |
2377 | res = -1; |
2378 | } | |
2379 | X509_free(cert); | |
2380 | } | |
2381 | ||
2382 | if (pkey) { | |
2383 | wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12"); | |
2384 | if (ssl) { | |
2385 | if (SSL_use_PrivateKey(ssl, pkey) != 1) | |
2386 | res = -1; | |
2387 | } else { | |
bd9b8b2b | 2388 | if (SSL_CTX_use_PrivateKey(data->ssl, pkey) != 1) |
6fc6879b JM |
2389 | res = -1; |
2390 | } | |
2391 | EVP_PKEY_free(pkey); | |
2392 | } | |
2393 | ||
2394 | if (certs) { | |
36e82060 | 2395 | #if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER) |
de2a7b79 JM |
2396 | SSL_clear_chain_certs(ssl); |
2397 | while ((cert = sk_X509_pop(certs)) != NULL) { | |
2398 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
2399 | sizeof(buf)); | |
2400 | wpa_printf(MSG_DEBUG, "TLS: additional certificate" | |
2401 | " from PKCS12: subject='%s'", buf); | |
2402 | if (SSL_add1_chain_cert(ssl, cert) != 1) { | |
20f331b7 JM |
2403 | tls_show_errors(MSG_DEBUG, __func__, |
2404 | "Failed to add additional certificate"); | |
de2a7b79 JM |
2405 | res = -1; |
2406 | break; | |
2407 | } | |
2408 | } | |
20f331b7 JM |
2409 | if (!res) { |
2410 | /* Try to continue anyway */ | |
2411 | } | |
de2a7b79 | 2412 | sk_X509_free(certs); |
226cdea6 | 2413 | #ifndef OPENSSL_IS_BORINGSSL |
de2a7b79 JM |
2414 | res = SSL_build_cert_chain(ssl, |
2415 | SSL_BUILD_CHAIN_FLAG_CHECK | | |
2416 | SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR); | |
2417 | if (!res) { | |
2418 | tls_show_errors(MSG_DEBUG, __func__, | |
2419 | "Failed to build certificate chain"); | |
2420 | } else if (res == 2) { | |
2421 | wpa_printf(MSG_DEBUG, | |
2422 | "TLS: Ignore certificate chain verification error when building chain with PKCS#12 extra certificates"); | |
2423 | } | |
226cdea6 | 2424 | #endif /* OPENSSL_IS_BORINGSSL */ |
de2a7b79 JM |
2425 | /* |
2426 | * Try to continue regardless of result since it is possible for | |
2427 | * the extra certificates not to be required. | |
2428 | */ | |
2429 | res = 0; | |
2430 | #else /* OPENSSL_VERSION_NUMBER >= 0x10002000L */ | |
bd9b8b2b | 2431 | SSL_CTX_clear_extra_chain_certs(data->ssl); |
6fc6879b JM |
2432 | while ((cert = sk_X509_pop(certs)) != NULL) { |
2433 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
2434 | sizeof(buf)); | |
2435 | wpa_printf(MSG_DEBUG, "TLS: additional certificate" | |
2436 | " from PKCS12: subject='%s'", buf); | |
2437 | /* | |
2438 | * There is no SSL equivalent for the chain cert - so | |
2439 | * always add it to the context... | |
2440 | */ | |
bd9b8b2b JM |
2441 | if (SSL_CTX_add_extra_chain_cert(data->ssl, cert) != 1) |
2442 | { | |
6fc6879b JM |
2443 | res = -1; |
2444 | break; | |
2445 | } | |
2446 | } | |
2447 | sk_X509_free(certs); | |
de2a7b79 | 2448 | #endif /* OPENSSL_VERSION_NUMBER >= 0x10002000L */ |
6fc6879b JM |
2449 | } |
2450 | ||
2451 | PKCS12_free(p12); | |
2452 | ||
2453 | if (res < 0) | |
bd9b8b2b | 2454 | tls_get_errors(data); |
6fc6879b JM |
2455 | |
2456 | return res; | |
2457 | } | |
2458 | #endif /* PKCS12_FUNCS */ | |
2459 | ||
2460 | ||
bd9b8b2b JM |
2461 | static int tls_read_pkcs12(struct tls_data *data, SSL *ssl, |
2462 | const char *private_key, const char *passwd) | |
6fc6879b JM |
2463 | { |
2464 | #ifdef PKCS12_FUNCS | |
2465 | FILE *f; | |
2466 | PKCS12 *p12; | |
2467 | ||
2468 | f = fopen(private_key, "rb"); | |
2469 | if (f == NULL) | |
2470 | return -1; | |
2471 | ||
2472 | p12 = d2i_PKCS12_fp(f, NULL); | |
2473 | fclose(f); | |
2474 | ||
2475 | if (p12 == NULL) { | |
2476 | tls_show_errors(MSG_INFO, __func__, | |
2477 | "Failed to use PKCS#12 file"); | |
2478 | return -1; | |
2479 | } | |
2480 | ||
bd9b8b2b | 2481 | return tls_parse_pkcs12(data, ssl, p12, passwd); |
6fc6879b JM |
2482 | |
2483 | #else /* PKCS12_FUNCS */ | |
2484 | wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read " | |
2485 | "p12/pfx files"); | |
2486 | return -1; | |
2487 | #endif /* PKCS12_FUNCS */ | |
2488 | } | |
2489 | ||
2490 | ||
bd9b8b2b | 2491 | static int tls_read_pkcs12_blob(struct tls_data *data, SSL *ssl, |
6fc6879b JM |
2492 | const u8 *blob, size_t len, const char *passwd) |
2493 | { | |
2494 | #ifdef PKCS12_FUNCS | |
2495 | PKCS12 *p12; | |
2496 | ||
fee31f76 | 2497 | p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len); |
6fc6879b JM |
2498 | if (p12 == NULL) { |
2499 | tls_show_errors(MSG_INFO, __func__, | |
2500 | "Failed to use PKCS#12 blob"); | |
2501 | return -1; | |
2502 | } | |
2503 | ||
bd9b8b2b | 2504 | return tls_parse_pkcs12(data, ssl, p12, passwd); |
6fc6879b JM |
2505 | |
2506 | #else /* PKCS12_FUNCS */ | |
2507 | wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse " | |
2508 | "p12/pfx blobs"); | |
2509 | return -1; | |
2510 | #endif /* PKCS12_FUNCS */ | |
2511 | } | |
2512 | ||
2513 | ||
e572cb63 | 2514 | #ifndef OPENSSL_NO_ENGINE |
e59c91af DS |
2515 | static int tls_engine_get_cert(struct tls_connection *conn, |
2516 | const char *cert_id, | |
2517 | X509 **cert) | |
2518 | { | |
e59c91af DS |
2519 | /* this runs after the private key is loaded so no PIN is required */ |
2520 | struct { | |
2521 | const char *cert_id; | |
2522 | X509 *cert; | |
2523 | } params; | |
2524 | params.cert_id = cert_id; | |
2525 | params.cert = NULL; | |
2526 | ||
2527 | if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL", | |
2528 | 0, ¶ms, NULL, 1)) { | |
fd4fb281 MG |
2529 | unsigned long err = ERR_get_error(); |
2530 | ||
e59c91af DS |
2531 | wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id" |
2532 | " '%s' [%s]", cert_id, | |
fd4fb281 MG |
2533 | ERR_error_string(err, NULL)); |
2534 | if (tls_is_pin_error(err)) | |
2535 | return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN; | |
e59c91af DS |
2536 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; |
2537 | } | |
2538 | if (!params.cert) { | |
2539 | wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id" | |
2540 | " '%s'", cert_id); | |
2541 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
2542 | } | |
2543 | *cert = params.cert; | |
2544 | return 0; | |
e59c91af | 2545 | } |
e572cb63 | 2546 | #endif /* OPENSSL_NO_ENGINE */ |
e59c91af DS |
2547 | |
2548 | ||
2549 | static int tls_connection_engine_client_cert(struct tls_connection *conn, | |
2550 | const char *cert_id) | |
2551 | { | |
2552 | #ifndef OPENSSL_NO_ENGINE | |
2553 | X509 *cert; | |
2554 | ||
2555 | if (tls_engine_get_cert(conn, cert_id, &cert)) | |
2556 | return -1; | |
2557 | ||
2558 | if (!SSL_use_certificate(conn->ssl, cert)) { | |
2559 | tls_show_errors(MSG_ERROR, __func__, | |
2560 | "SSL_use_certificate failed"); | |
2561 | X509_free(cert); | |
2562 | return -1; | |
2563 | } | |
2564 | X509_free(cert); | |
2565 | wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> " | |
2566 | "OK"); | |
2567 | return 0; | |
2568 | ||
2569 | #else /* OPENSSL_NO_ENGINE */ | |
2570 | return -1; | |
2571 | #endif /* OPENSSL_NO_ENGINE */ | |
2572 | } | |
2573 | ||
2574 | ||
bd9b8b2b | 2575 | static int tls_connection_engine_ca_cert(struct tls_data *data, |
e59c91af DS |
2576 | struct tls_connection *conn, |
2577 | const char *ca_cert_id) | |
2578 | { | |
2579 | #ifndef OPENSSL_NO_ENGINE | |
2580 | X509 *cert; | |
bd9b8b2b | 2581 | SSL_CTX *ssl_ctx = data->ssl; |
68ae4773 | 2582 | X509_STORE *store; |
e59c91af DS |
2583 | |
2584 | if (tls_engine_get_cert(conn, ca_cert_id, &cert)) | |
2585 | return -1; | |
2586 | ||
2587 | /* start off the same as tls_connection_ca_cert */ | |
68ae4773 JM |
2588 | store = X509_STORE_new(); |
2589 | if (store == NULL) { | |
e59c91af DS |
2590 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new " |
2591 | "certificate store", __func__); | |
2592 | X509_free(cert); | |
2593 | return -1; | |
2594 | } | |
68ae4773 JM |
2595 | SSL_CTX_set_cert_store(ssl_ctx, store); |
2596 | if (!X509_STORE_add_cert(store, cert)) { | |
e59c91af DS |
2597 | unsigned long err = ERR_peek_error(); |
2598 | tls_show_errors(MSG_WARNING, __func__, | |
2599 | "Failed to add CA certificate from engine " | |
2600 | "to certificate store"); | |
2601 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
2602 | ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
2603 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert" | |
2604 | " already in hash table error", | |
2605 | __func__); | |
2606 | } else { | |
2607 | X509_free(cert); | |
2608 | return -1; | |
2609 | } | |
2610 | } | |
2611 | X509_free(cert); | |
2612 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine " | |
2613 | "to certificate store", __func__); | |
2614 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); | |
d8858cad CW |
2615 | conn->ca_cert_verify = 1; |
2616 | ||
e59c91af DS |
2617 | return 0; |
2618 | ||
2619 | #else /* OPENSSL_NO_ENGINE */ | |
2620 | return -1; | |
2621 | #endif /* OPENSSL_NO_ENGINE */ | |
2622 | } | |
2623 | ||
2624 | ||
6fc6879b JM |
2625 | static int tls_connection_engine_private_key(struct tls_connection *conn) |
2626 | { | |
aeeb0bca | 2627 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
2628 | if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) { |
2629 | tls_show_errors(MSG_ERROR, __func__, | |
2630 | "ENGINE: cannot use private key for TLS"); | |
2631 | return -1; | |
2632 | } | |
2633 | if (!SSL_check_private_key(conn->ssl)) { | |
2634 | tls_show_errors(MSG_INFO, __func__, | |
2635 | "Private key failed verification"); | |
2636 | return -1; | |
2637 | } | |
2638 | return 0; | |
2639 | #else /* OPENSSL_NO_ENGINE */ | |
2640 | wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but " | |
2641 | "engine support was not compiled in"); | |
2642 | return -1; | |
2643 | #endif /* OPENSSL_NO_ENGINE */ | |
2644 | } | |
2645 | ||
2646 | ||
bd9b8b2b | 2647 | static int tls_connection_private_key(struct tls_data *data, |
6fc6879b JM |
2648 | struct tls_connection *conn, |
2649 | const char *private_key, | |
2650 | const char *private_key_passwd, | |
2651 | const u8 *private_key_blob, | |
2652 | size_t private_key_blob_len) | |
2653 | { | |
bd9b8b2b | 2654 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
2655 | char *passwd; |
2656 | int ok; | |
2657 | ||
2658 | if (private_key == NULL && private_key_blob == NULL) | |
2659 | return 0; | |
2660 | ||
2661 | if (private_key_passwd) { | |
2662 | passwd = os_strdup(private_key_passwd); | |
2663 | if (passwd == NULL) | |
2664 | return -1; | |
2665 | } else | |
2666 | passwd = NULL; | |
2667 | ||
2668 | SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb); | |
2669 | SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd); | |
2670 | ||
2671 | ok = 0; | |
2672 | while (private_key_blob) { | |
2673 | if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl, | |
2674 | (u8 *) private_key_blob, | |
2675 | private_key_blob_len) == 1) { | |
2676 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_" | |
2677 | "ASN1(EVP_PKEY_RSA) --> OK"); | |
2678 | ok = 1; | |
2679 | break; | |
6fc6879b JM |
2680 | } |
2681 | ||
2682 | if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl, | |
2683 | (u8 *) private_key_blob, | |
2684 | private_key_blob_len) == 1) { | |
2685 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_" | |
2686 | "ASN1(EVP_PKEY_DSA) --> OK"); | |
2687 | ok = 1; | |
2688 | break; | |
6fc6879b JM |
2689 | } |
2690 | ||
2691 | if (SSL_use_RSAPrivateKey_ASN1(conn->ssl, | |
2692 | (u8 *) private_key_blob, | |
2693 | private_key_blob_len) == 1) { | |
2694 | wpa_printf(MSG_DEBUG, "OpenSSL: " | |
2695 | "SSL_use_RSAPrivateKey_ASN1 --> OK"); | |
2696 | ok = 1; | |
2697 | break; | |
6fc6879b JM |
2698 | } |
2699 | ||
bd9b8b2b | 2700 | if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob, |
6fc6879b JM |
2701 | private_key_blob_len, passwd) == 0) { |
2702 | wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> " | |
2703 | "OK"); | |
2704 | ok = 1; | |
2705 | break; | |
2706 | } | |
2707 | ||
2708 | break; | |
2709 | } | |
2710 | ||
2711 | while (!ok && private_key) { | |
2712 | #ifndef OPENSSL_NO_STDIO | |
2713 | if (SSL_use_PrivateKey_file(conn->ssl, private_key, | |
2714 | SSL_FILETYPE_ASN1) == 1) { | |
2715 | wpa_printf(MSG_DEBUG, "OpenSSL: " | |
2716 | "SSL_use_PrivateKey_File (DER) --> OK"); | |
2717 | ok = 1; | |
2718 | break; | |
6fc6879b JM |
2719 | } |
2720 | ||
2721 | if (SSL_use_PrivateKey_file(conn->ssl, private_key, | |
2722 | SSL_FILETYPE_PEM) == 1) { | |
2723 | wpa_printf(MSG_DEBUG, "OpenSSL: " | |
2724 | "SSL_use_PrivateKey_File (PEM) --> OK"); | |
2725 | ok = 1; | |
2726 | break; | |
6fc6879b JM |
2727 | } |
2728 | #else /* OPENSSL_NO_STDIO */ | |
2729 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", | |
2730 | __func__); | |
2731 | #endif /* OPENSSL_NO_STDIO */ | |
2732 | ||
bd9b8b2b | 2733 | if (tls_read_pkcs12(data, conn->ssl, private_key, passwd) |
6fc6879b JM |
2734 | == 0) { |
2735 | wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file " | |
2736 | "--> OK"); | |
2737 | ok = 1; | |
2738 | break; | |
2739 | } | |
2740 | ||
2741 | if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) { | |
2742 | wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to " | |
2743 | "access certificate store --> OK"); | |
2744 | ok = 1; | |
2745 | break; | |
2746 | } | |
2747 | ||
2748 | break; | |
2749 | } | |
2750 | ||
2751 | if (!ok) { | |
effab86f JM |
2752 | tls_show_errors(MSG_INFO, __func__, |
2753 | "Failed to load private key"); | |
6fc6879b | 2754 | os_free(passwd); |
6fc6879b JM |
2755 | return -1; |
2756 | } | |
2757 | ERR_clear_error(); | |
2758 | SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL); | |
2759 | os_free(passwd); | |
55651a4b | 2760 | |
6fc6879b JM |
2761 | if (!SSL_check_private_key(conn->ssl)) { |
2762 | tls_show_errors(MSG_INFO, __func__, "Private key failed " | |
2763 | "verification"); | |
2764 | return -1; | |
2765 | } | |
2766 | ||
2767 | wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully"); | |
2768 | return 0; | |
2769 | } | |
2770 | ||
2771 | ||
bd9b8b2b JM |
2772 | static int tls_global_private_key(struct tls_data *data, |
2773 | const char *private_key, | |
6fc6879b JM |
2774 | const char *private_key_passwd) |
2775 | { | |
bd9b8b2b | 2776 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
2777 | char *passwd; |
2778 | ||
2779 | if (private_key == NULL) | |
2780 | return 0; | |
2781 | ||
2782 | if (private_key_passwd) { | |
2783 | passwd = os_strdup(private_key_passwd); | |
2784 | if (passwd == NULL) | |
2785 | return -1; | |
2786 | } else | |
2787 | passwd = NULL; | |
2788 | ||
2789 | SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb); | |
2790 | SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd); | |
2791 | if ( | |
2792 | #ifndef OPENSSL_NO_STDIO | |
2793 | SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key, | |
2794 | SSL_FILETYPE_ASN1) != 1 && | |
2795 | SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key, | |
2796 | SSL_FILETYPE_PEM) != 1 && | |
2797 | #endif /* OPENSSL_NO_STDIO */ | |
bd9b8b2b | 2798 | tls_read_pkcs12(data, NULL, private_key, passwd)) { |
6fc6879b JM |
2799 | tls_show_errors(MSG_INFO, __func__, |
2800 | "Failed to load private key"); | |
2801 | os_free(passwd); | |
2802 | ERR_clear_error(); | |
2803 | return -1; | |
2804 | } | |
2805 | os_free(passwd); | |
2806 | ERR_clear_error(); | |
2807 | SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL); | |
55651a4b | 2808 | |
6fc6879b JM |
2809 | if (!SSL_CTX_check_private_key(ssl_ctx)) { |
2810 | tls_show_errors(MSG_INFO, __func__, | |
2811 | "Private key failed verification"); | |
2812 | return -1; | |
2813 | } | |
2814 | ||
2815 | return 0; | |
2816 | } | |
2817 | ||
2818 | ||
2819 | static int tls_connection_dh(struct tls_connection *conn, const char *dh_file) | |
2820 | { | |
2821 | #ifdef OPENSSL_NO_DH | |
2822 | if (dh_file == NULL) | |
2823 | return 0; | |
2824 | wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but " | |
2825 | "dh_file specified"); | |
2826 | return -1; | |
2827 | #else /* OPENSSL_NO_DH */ | |
2828 | DH *dh; | |
2829 | BIO *bio; | |
2830 | ||
2831 | /* TODO: add support for dh_blob */ | |
2832 | if (dh_file == NULL) | |
2833 | return 0; | |
2834 | if (conn == NULL) | |
2835 | return -1; | |
2836 | ||
2837 | bio = BIO_new_file(dh_file, "r"); | |
2838 | if (bio == NULL) { | |
2839 | wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s", | |
2840 | dh_file, ERR_error_string(ERR_get_error(), NULL)); | |
2841 | return -1; | |
2842 | } | |
2843 | dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); | |
2844 | BIO_free(bio); | |
2845 | #ifndef OPENSSL_NO_DSA | |
2846 | while (dh == NULL) { | |
2847 | DSA *dsa; | |
2848 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -" | |
2849 | " trying to parse as DSA params", dh_file, | |
2850 | ERR_error_string(ERR_get_error(), NULL)); | |
2851 | bio = BIO_new_file(dh_file, "r"); | |
2852 | if (bio == NULL) | |
2853 | break; | |
2854 | dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL); | |
2855 | BIO_free(bio); | |
2856 | if (!dsa) { | |
2857 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file " | |
2858 | "'%s': %s", dh_file, | |
2859 | ERR_error_string(ERR_get_error(), NULL)); | |
2860 | break; | |
2861 | } | |
2862 | ||
2863 | wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format"); | |
2864 | dh = DSA_dup_DH(dsa); | |
2865 | DSA_free(dsa); | |
2866 | if (dh == NULL) { | |
2867 | wpa_printf(MSG_INFO, "TLS: Failed to convert DSA " | |
2868 | "params into DH params"); | |
2869 | break; | |
2870 | } | |
2871 | break; | |
2872 | } | |
2873 | #endif /* !OPENSSL_NO_DSA */ | |
2874 | if (dh == NULL) { | |
2875 | wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file " | |
2876 | "'%s'", dh_file); | |
2877 | return -1; | |
2878 | } | |
2879 | ||
2880 | if (SSL_set_tmp_dh(conn->ssl, dh) != 1) { | |
2881 | wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': " | |
2882 | "%s", dh_file, | |
2883 | ERR_error_string(ERR_get_error(), NULL)); | |
2884 | DH_free(dh); | |
2885 | return -1; | |
2886 | } | |
2887 | DH_free(dh); | |
2888 | return 0; | |
2889 | #endif /* OPENSSL_NO_DH */ | |
2890 | } | |
2891 | ||
2892 | ||
bd9b8b2b | 2893 | static int tls_global_dh(struct tls_data *data, const char *dh_file) |
6fc6879b JM |
2894 | { |
2895 | #ifdef OPENSSL_NO_DH | |
2896 | if (dh_file == NULL) | |
2897 | return 0; | |
2898 | wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but " | |
2899 | "dh_file specified"); | |
2900 | return -1; | |
2901 | #else /* OPENSSL_NO_DH */ | |
bd9b8b2b | 2902 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
2903 | DH *dh; |
2904 | BIO *bio; | |
2905 | ||
2906 | /* TODO: add support for dh_blob */ | |
2907 | if (dh_file == NULL) | |
2908 | return 0; | |
2909 | if (ssl_ctx == NULL) | |
2910 | return -1; | |
2911 | ||
2912 | bio = BIO_new_file(dh_file, "r"); | |
2913 | if (bio == NULL) { | |
2914 | wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s", | |
2915 | dh_file, ERR_error_string(ERR_get_error(), NULL)); | |
2916 | return -1; | |
2917 | } | |
2918 | dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); | |
2919 | BIO_free(bio); | |
2920 | #ifndef OPENSSL_NO_DSA | |
2921 | while (dh == NULL) { | |
2922 | DSA *dsa; | |
2923 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -" | |
2924 | " trying to parse as DSA params", dh_file, | |
2925 | ERR_error_string(ERR_get_error(), NULL)); | |
2926 | bio = BIO_new_file(dh_file, "r"); | |
2927 | if (bio == NULL) | |
2928 | break; | |
2929 | dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL); | |
2930 | BIO_free(bio); | |
2931 | if (!dsa) { | |
2932 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file " | |
2933 | "'%s': %s", dh_file, | |
2934 | ERR_error_string(ERR_get_error(), NULL)); | |
2935 | break; | |
2936 | } | |
2937 | ||
2938 | wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format"); | |
2939 | dh = DSA_dup_DH(dsa); | |
2940 | DSA_free(dsa); | |
2941 | if (dh == NULL) { | |
2942 | wpa_printf(MSG_INFO, "TLS: Failed to convert DSA " | |
2943 | "params into DH params"); | |
2944 | break; | |
2945 | } | |
2946 | break; | |
2947 | } | |
2948 | #endif /* !OPENSSL_NO_DSA */ | |
2949 | if (dh == NULL) { | |
2950 | wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file " | |
2951 | "'%s'", dh_file); | |
2952 | return -1; | |
2953 | } | |
2954 | ||
2955 | if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) { | |
2956 | wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': " | |
2957 | "%s", dh_file, | |
2958 | ERR_error_string(ERR_get_error(), NULL)); | |
2959 | DH_free(dh); | |
2960 | return -1; | |
2961 | } | |
2962 | DH_free(dh); | |
2963 | return 0; | |
2964 | #endif /* OPENSSL_NO_DH */ | |
2965 | } | |
2966 | ||
2967 | ||
1046db8b JM |
2968 | int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn, |
2969 | struct tls_random *keys) | |
6fc6879b JM |
2970 | { |
2971 | SSL *ssl; | |
2972 | ||
2973 | if (conn == NULL || keys == NULL) | |
2974 | return -1; | |
2975 | ssl = conn->ssl; | |
005c5dcf JM |
2976 | if (ssl == NULL) |
2977 | return -1; | |
2978 | ||
2979 | os_memset(keys, 0, sizeof(*keys)); | |
2980 | keys->client_random = conn->client_random; | |
2981 | keys->client_random_len = SSL_get_client_random( | |
2982 | ssl, conn->client_random, sizeof(conn->client_random)); | |
2983 | keys->server_random = conn->server_random; | |
2984 | keys->server_random_len = SSL_get_server_random( | |
2985 | ssl, conn->server_random, sizeof(conn->server_random)); | |
6fc6879b JM |
2986 | |
2987 | return 0; | |
2988 | } | |
2989 | ||
2990 | ||
266cf4a0 | 2991 | #ifndef CONFIG_FIPS |
af851914 JM |
2992 | static int openssl_get_keyblock_size(SSL *ssl) |
2993 | { | |
36e82060 | 2994 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
af851914 JM |
2995 | const EVP_CIPHER *c; |
2996 | const EVP_MD *h; | |
2997 | int md_size; | |
2998 | ||
2999 | if (ssl->enc_read_ctx == NULL || ssl->enc_read_ctx->cipher == NULL || | |
3000 | ssl->read_hash == NULL) | |
3001 | return -1; | |
3002 | ||
3003 | c = ssl->enc_read_ctx->cipher; | |
af851914 | 3004 | h = EVP_MD_CTX_md(ssl->read_hash); |
af851914 JM |
3005 | if (h) |
3006 | md_size = EVP_MD_size(h); | |
af851914 JM |
3007 | else if (ssl->s3) |
3008 | md_size = ssl->s3->tmp.new_mac_secret_size; | |
af851914 JM |
3009 | else |
3010 | return -1; | |
3011 | ||
3012 | wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d " | |
3013 | "IV_len=%d", EVP_CIPHER_key_length(c), md_size, | |
3014 | EVP_CIPHER_iv_length(c)); | |
3015 | return 2 * (EVP_CIPHER_key_length(c) + | |
3016 | md_size + | |
3017 | EVP_CIPHER_iv_length(c)); | |
3de28506 JM |
3018 | #else |
3019 | const SSL_CIPHER *ssl_cipher; | |
3020 | int cipher, digest; | |
3021 | const EVP_CIPHER *c; | |
3022 | const EVP_MD *h; | |
3023 | ||
3024 | ssl_cipher = SSL_get_current_cipher(ssl); | |
3025 | if (!ssl_cipher) | |
3026 | return -1; | |
3027 | cipher = SSL_CIPHER_get_cipher_nid(ssl_cipher); | |
3028 | digest = SSL_CIPHER_get_digest_nid(ssl_cipher); | |
3029 | wpa_printf(MSG_DEBUG, "OpenSSL: cipher nid %d digest nid %d", | |
3030 | cipher, digest); | |
3031 | if (cipher < 0 || digest < 0) | |
3032 | return -1; | |
3033 | c = EVP_get_cipherbynid(cipher); | |
3034 | h = EVP_get_digestbynid(digest); | |
3035 | if (!c || !h) | |
3036 | return -1; | |
3037 | ||
3038 | wpa_printf(MSG_DEBUG, | |
3039 | "OpenSSL: keyblock size: key_len=%d MD_size=%d IV_len=%d", | |
3040 | EVP_CIPHER_key_length(c), EVP_MD_size(h), | |
3041 | EVP_CIPHER_iv_length(c)); | |
3042 | return 2 * (EVP_CIPHER_key_length(c) + EVP_MD_size(h) + | |
3043 | EVP_CIPHER_iv_length(c)); | |
3044 | #endif | |
af851914 | 3045 | } |
266cf4a0 | 3046 | #endif /* CONFIG_FIPS */ |
af851914 JM |
3047 | |
3048 | ||
bd9b8b2b | 3049 | static int openssl_tls_prf(struct tls_connection *conn, |
fa0e7151 | 3050 | const char *label, int server_random_first, |
af851914 | 3051 | int skip_keyblock, u8 *out, size_t out_len) |
fa0e7151 JM |
3052 | { |
3053 | #ifdef CONFIG_FIPS | |
3054 | wpa_printf(MSG_ERROR, "OpenSSL: TLS keys cannot be exported in FIPS " | |
3055 | "mode"); | |
3056 | return -1; | |
3057 | #else /* CONFIG_FIPS */ | |
3de28506 JM |
3058 | SSL *ssl; |
3059 | SSL_SESSION *sess; | |
3060 | u8 *rnd; | |
3061 | int ret = -1; | |
3062 | int skip = 0; | |
3063 | u8 *tmp_out = NULL; | |
3064 | u8 *_out = out; | |
3065 | unsigned char client_random[SSL3_RANDOM_SIZE]; | |
3066 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
3067 | unsigned char master_key[64]; | |
3068 | size_t master_key_len; | |
16bc3b89 | 3069 | const char *ver; |
3de28506 JM |
3070 | |
3071 | /* | |
3072 | * TLS library did not support key generation, so get the needed TLS | |
3073 | * session parameters and use an internal implementation of TLS PRF to | |
3074 | * derive the key. | |
3075 | */ | |
3076 | ||
3077 | if (conn == NULL) | |
3078 | return -1; | |
3079 | ssl = conn->ssl; | |
3080 | if (ssl == NULL) | |
3081 | return -1; | |
16bc3b89 | 3082 | ver = SSL_get_version(ssl); |
3de28506 | 3083 | sess = SSL_get_session(ssl); |
16bc3b89 | 3084 | if (!ver || !sess) |
3de28506 JM |
3085 | return -1; |
3086 | ||
3087 | if (skip_keyblock) { | |
3088 | skip = openssl_get_keyblock_size(ssl); | |
3089 | if (skip < 0) | |
3090 | return -1; | |
3091 | tmp_out = os_malloc(skip + out_len); | |
3092 | if (!tmp_out) | |
3093 | return -1; | |
3094 | _out = tmp_out; | |
3095 | } | |
3096 | ||
3097 | rnd = os_malloc(2 * SSL3_RANDOM_SIZE); | |
3098 | if (!rnd) { | |
3099 | os_free(tmp_out); | |
3100 | return -1; | |
3101 | } | |
3102 | ||
3103 | SSL_get_client_random(ssl, client_random, sizeof(client_random)); | |
3104 | SSL_get_server_random(ssl, server_random, sizeof(server_random)); | |
3105 | master_key_len = SSL_SESSION_get_master_key(sess, master_key, | |
3106 | sizeof(master_key)); | |
3107 | ||
3108 | if (server_random_first) { | |
3109 | os_memcpy(rnd, server_random, SSL3_RANDOM_SIZE); | |
3110 | os_memcpy(rnd + SSL3_RANDOM_SIZE, client_random, | |
3111 | SSL3_RANDOM_SIZE); | |
3112 | } else { | |
3113 | os_memcpy(rnd, client_random, SSL3_RANDOM_SIZE); | |
3114 | os_memcpy(rnd + SSL3_RANDOM_SIZE, server_random, | |
3115 | SSL3_RANDOM_SIZE); | |
3116 | } | |
3117 | ||
16bc3b89 JM |
3118 | if (os_strcmp(ver, "TLSv1.2") == 0) { |
3119 | tls_prf_sha256(master_key, master_key_len, | |
3120 | label, rnd, 2 * SSL3_RANDOM_SIZE, | |
3121 | _out, skip + out_len); | |
3de28506 | 3122 | ret = 0; |
16bc3b89 JM |
3123 | } else if (tls_prf_sha1_md5(master_key, master_key_len, |
3124 | label, rnd, 2 * SSL3_RANDOM_SIZE, | |
3125 | _out, skip + out_len) == 0) { | |
3126 | ret = 0; | |
3127 | } | |
3de28506 JM |
3128 | os_memset(master_key, 0, sizeof(master_key)); |
3129 | os_free(rnd); | |
3130 | if (ret == 0 && skip_keyblock) | |
3131 | os_memcpy(out, _out + skip, out_len); | |
3132 | bin_clear_free(tmp_out, skip); | |
3133 | ||
3134 | return ret; | |
fa0e7151 JM |
3135 | #endif /* CONFIG_FIPS */ |
3136 | } | |
3137 | ||
3138 | ||
6fc6879b JM |
3139 | int tls_connection_prf(void *tls_ctx, struct tls_connection *conn, |
3140 | const char *label, int server_random_first, | |
af851914 | 3141 | int skip_keyblock, u8 *out, size_t out_len) |
6fc6879b | 3142 | { |
68770ccd JM |
3143 | if (conn == NULL) |
3144 | return -1; | |
af851914 | 3145 | if (server_random_first || skip_keyblock) |
bd9b8b2b | 3146 | return openssl_tls_prf(conn, label, |
af851914 JM |
3147 | server_random_first, skip_keyblock, |
3148 | out, out_len); | |
9a42d859 | 3149 | if (SSL_export_keying_material(conn->ssl, out, out_len, label, |
68770ccd JM |
3150 | os_strlen(label), NULL, 0, 0) == 1) { |
3151 | wpa_printf(MSG_DEBUG, "OpenSSL: Using internal PRF"); | |
3152 | return 0; | |
3153 | } | |
bd9b8b2b | 3154 | return openssl_tls_prf(conn, label, server_random_first, |
af851914 | 3155 | skip_keyblock, out, out_len); |
6fc6879b JM |
3156 | } |
3157 | ||
3158 | ||
81c85c06 JM |
3159 | static struct wpabuf * |
3160 | openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data, | |
3161 | int server) | |
6fc6879b JM |
3162 | { |
3163 | int res; | |
81c85c06 | 3164 | struct wpabuf *out_data; |
6fc6879b JM |
3165 | |
3166 | /* | |
3167 | * Give TLS handshake data from the server (if available) to OpenSSL | |
3168 | * for processing. | |
3169 | */ | |
e9690eb7 | 3170 | if (in_data && wpabuf_len(in_data) > 0 && |
81c85c06 JM |
3171 | BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data)) |
3172 | < 0) { | |
6fc6879b JM |
3173 | tls_show_errors(MSG_INFO, __func__, |
3174 | "Handshake failed - BIO_write"); | |
3175 | return NULL; | |
3176 | } | |
3177 | ||
3178 | /* Initiate TLS handshake or continue the existing handshake */ | |
81c85c06 JM |
3179 | if (server) |
3180 | res = SSL_accept(conn->ssl); | |
3181 | else | |
3182 | res = SSL_connect(conn->ssl); | |
6fc6879b JM |
3183 | if (res != 1) { |
3184 | int err = SSL_get_error(conn->ssl, res); | |
3185 | if (err == SSL_ERROR_WANT_READ) | |
3186 | wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want " | |
3187 | "more data"); | |
3188 | else if (err == SSL_ERROR_WANT_WRITE) | |
3189 | wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to " | |
3190 | "write"); | |
3191 | else { | |
3192 | tls_show_errors(MSG_INFO, __func__, "SSL_connect"); | |
3193 | conn->failed++; | |
3194 | } | |
3195 | } | |
3196 | ||
3197 | /* Get the TLS handshake data to be sent to the server */ | |
3198 | res = BIO_ctrl_pending(conn->ssl_out); | |
3199 | wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res); | |
81c85c06 | 3200 | out_data = wpabuf_alloc(res); |
6fc6879b JM |
3201 | if (out_data == NULL) { |
3202 | wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for " | |
3203 | "handshake output (%d bytes)", res); | |
3204 | if (BIO_reset(conn->ssl_out) < 0) { | |
3205 | tls_show_errors(MSG_INFO, __func__, | |
3206 | "BIO_reset failed"); | |
3207 | } | |
6fc6879b JM |
3208 | return NULL; |
3209 | } | |
81c85c06 JM |
3210 | res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data), |
3211 | res); | |
6fc6879b JM |
3212 | if (res < 0) { |
3213 | tls_show_errors(MSG_INFO, __func__, | |
3214 | "Handshake failed - BIO_read"); | |
3215 | if (BIO_reset(conn->ssl_out) < 0) { | |
3216 | tls_show_errors(MSG_INFO, __func__, | |
3217 | "BIO_reset failed"); | |
3218 | } | |
81c85c06 | 3219 | wpabuf_free(out_data); |
6fc6879b JM |
3220 | return NULL; |
3221 | } | |
81c85c06 | 3222 | wpabuf_put(out_data, res); |
6fc6879b JM |
3223 | |
3224 | return out_data; | |
3225 | } | |
3226 | ||
3227 | ||
81c85c06 JM |
3228 | static struct wpabuf * |
3229 | openssl_get_appl_data(struct tls_connection *conn, size_t max_len) | |
6fc6879b | 3230 | { |
81c85c06 | 3231 | struct wpabuf *appl_data; |
6fc6879b | 3232 | int res; |
6fc6879b | 3233 | |
81c85c06 JM |
3234 | appl_data = wpabuf_alloc(max_len + 100); |
3235 | if (appl_data == NULL) | |
6fc6879b | 3236 | return NULL; |
6fc6879b | 3237 | |
81c85c06 JM |
3238 | res = SSL_read(conn->ssl, wpabuf_mhead(appl_data), |
3239 | wpabuf_size(appl_data)); | |
3240 | if (res < 0) { | |
bf206cad | 3241 | int err = SSL_get_error(conn->ssl, res); |
81c85c06 JM |
3242 | if (err == SSL_ERROR_WANT_READ || |
3243 | err == SSL_ERROR_WANT_WRITE) { | |
3244 | wpa_printf(MSG_DEBUG, "SSL: No Application Data " | |
3245 | "included"); | |
3246 | } else { | |
6fc6879b | 3247 | tls_show_errors(MSG_INFO, __func__, |
81c85c06 JM |
3248 | "Failed to read possible " |
3249 | "Application Data"); | |
6fc6879b | 3250 | } |
81c85c06 | 3251 | wpabuf_free(appl_data); |
6fc6879b JM |
3252 | return NULL; |
3253 | } | |
81c85c06 JM |
3254 | |
3255 | wpabuf_put(appl_data, res); | |
3256 | wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished " | |
3257 | "message", appl_data); | |
3258 | ||
3259 | return appl_data; | |
3260 | } | |
3261 | ||
3262 | ||
3263 | static struct wpabuf * | |
3264 | openssl_connection_handshake(struct tls_connection *conn, | |
3265 | const struct wpabuf *in_data, | |
3266 | struct wpabuf **appl_data, int server) | |
3267 | { | |
3268 | struct wpabuf *out_data; | |
3269 | ||
3270 | if (appl_data) | |
3271 | *appl_data = NULL; | |
3272 | ||
3273 | out_data = openssl_handshake(conn, in_data, server); | |
3274 | if (out_data == NULL) | |
6fc6879b | 3275 | return NULL; |
bb52293e JM |
3276 | if (conn->invalid_hb_used) { |
3277 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
3278 | wpabuf_free(out_data); | |
3279 | return NULL; | |
3280 | } | |
81c85c06 | 3281 | |
a89beee5 JM |
3282 | if (SSL_is_init_finished(conn->ssl)) { |
3283 | wpa_printf(MSG_DEBUG, | |
3284 | "OpenSSL: Handshake finished - resumed=%d", | |
3285 | tls_connection_resumed(conn->ssl_ctx, conn)); | |
3286 | if (appl_data && in_data) | |
3287 | *appl_data = openssl_get_appl_data(conn, | |
3288 | wpabuf_len(in_data)); | |
3289 | } | |
81c85c06 | 3290 | |
bb52293e JM |
3291 | if (conn->invalid_hb_used) { |
3292 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
3293 | if (appl_data) { | |
3294 | wpabuf_free(*appl_data); | |
3295 | *appl_data = NULL; | |
3296 | } | |
3297 | wpabuf_free(out_data); | |
3298 | return NULL; | |
3299 | } | |
3300 | ||
6fc6879b JM |
3301 | return out_data; |
3302 | } | |
3303 | ||
3304 | ||
81c85c06 JM |
3305 | struct wpabuf * |
3306 | tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn, | |
3307 | const struct wpabuf *in_data, | |
3308 | struct wpabuf **appl_data) | |
3309 | { | |
3310 | return openssl_connection_handshake(conn, in_data, appl_data, 0); | |
3311 | } | |
3312 | ||
3313 | ||
3314 | struct wpabuf * tls_connection_server_handshake(void *tls_ctx, | |
3315 | struct tls_connection *conn, | |
3316 | const struct wpabuf *in_data, | |
3317 | struct wpabuf **appl_data) | |
3318 | { | |
3319 | return openssl_connection_handshake(conn, in_data, appl_data, 1); | |
3320 | } | |
3321 | ||
3322 | ||
3323 | struct wpabuf * tls_connection_encrypt(void *tls_ctx, | |
3324 | struct tls_connection *conn, | |
3325 | const struct wpabuf *in_data) | |
6fc6879b JM |
3326 | { |
3327 | int res; | |
81c85c06 | 3328 | struct wpabuf *buf; |
6fc6879b JM |
3329 | |
3330 | if (conn == NULL) | |
81c85c06 | 3331 | return NULL; |
6fc6879b JM |
3332 | |
3333 | /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */ | |
3334 | if ((res = BIO_reset(conn->ssl_in)) < 0 || | |
3335 | (res = BIO_reset(conn->ssl_out)) < 0) { | |
3336 | tls_show_errors(MSG_INFO, __func__, "BIO_reset failed"); | |
81c85c06 | 3337 | return NULL; |
6fc6879b | 3338 | } |
81c85c06 | 3339 | res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data)); |
6fc6879b JM |
3340 | if (res < 0) { |
3341 | tls_show_errors(MSG_INFO, __func__, | |
3342 | "Encryption failed - SSL_write"); | |
81c85c06 | 3343 | return NULL; |
6fc6879b JM |
3344 | } |
3345 | ||
3346 | /* Read encrypted data to be sent to the server */ | |
81c85c06 JM |
3347 | buf = wpabuf_alloc(wpabuf_len(in_data) + 300); |
3348 | if (buf == NULL) | |
3349 | return NULL; | |
3350 | res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf)); | |
6fc6879b JM |
3351 | if (res < 0) { |
3352 | tls_show_errors(MSG_INFO, __func__, | |
3353 | "Encryption failed - BIO_read"); | |
81c85c06 JM |
3354 | wpabuf_free(buf); |
3355 | return NULL; | |
6fc6879b | 3356 | } |
81c85c06 | 3357 | wpabuf_put(buf, res); |
6fc6879b | 3358 | |
81c85c06 | 3359 | return buf; |
6fc6879b JM |
3360 | } |
3361 | ||
3362 | ||
81c85c06 JM |
3363 | struct wpabuf * tls_connection_decrypt(void *tls_ctx, |
3364 | struct tls_connection *conn, | |
3365 | const struct wpabuf *in_data) | |
6fc6879b JM |
3366 | { |
3367 | int res; | |
81c85c06 | 3368 | struct wpabuf *buf; |
6fc6879b JM |
3369 | |
3370 | /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */ | |
81c85c06 JM |
3371 | res = BIO_write(conn->ssl_in, wpabuf_head(in_data), |
3372 | wpabuf_len(in_data)); | |
6fc6879b JM |
3373 | if (res < 0) { |
3374 | tls_show_errors(MSG_INFO, __func__, | |
3375 | "Decryption failed - BIO_write"); | |
81c85c06 | 3376 | return NULL; |
6fc6879b JM |
3377 | } |
3378 | if (BIO_reset(conn->ssl_out) < 0) { | |
3379 | tls_show_errors(MSG_INFO, __func__, "BIO_reset failed"); | |
81c85c06 | 3380 | return NULL; |
6fc6879b JM |
3381 | } |
3382 | ||
3383 | /* Read decrypted data for further processing */ | |
81c85c06 JM |
3384 | /* |
3385 | * Even though we try to disable TLS compression, it is possible that | |
3386 | * this cannot be done with all TLS libraries. Add extra buffer space | |
3387 | * to handle the possibility of the decrypted data being longer than | |
3388 | * input data. | |
3389 | */ | |
3390 | buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3); | |
3391 | if (buf == NULL) | |
3392 | return NULL; | |
3393 | res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf)); | |
6fc6879b JM |
3394 | if (res < 0) { |
3395 | tls_show_errors(MSG_INFO, __func__, | |
3396 | "Decryption failed - SSL_read"); | |
a86a7316 | 3397 | wpabuf_free(buf); |
81c85c06 | 3398 | return NULL; |
6fc6879b | 3399 | } |
81c85c06 | 3400 | wpabuf_put(buf, res); |
6fc6879b | 3401 | |
bb52293e JM |
3402 | if (conn->invalid_hb_used) { |
3403 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
3404 | wpabuf_free(buf); | |
3405 | return NULL; | |
3406 | } | |
3407 | ||
81c85c06 | 3408 | return buf; |
6fc6879b JM |
3409 | } |
3410 | ||
3411 | ||
3412 | int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn) | |
3413 | { | |
db3168d4 | 3414 | return conn ? SSL_cache_hit(conn->ssl) : 0; |
6fc6879b JM |
3415 | } |
3416 | ||
3417 | ||
3418 | int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn, | |
3419 | u8 *ciphers) | |
3420 | { | |
750f5d99 | 3421 | char buf[500], *pos, *end; |
6fc6879b JM |
3422 | u8 *c; |
3423 | int ret; | |
3424 | ||
3425 | if (conn == NULL || conn->ssl == NULL || ciphers == NULL) | |
3426 | return -1; | |
3427 | ||
3428 | buf[0] = '\0'; | |
3429 | pos = buf; | |
3430 | end = pos + sizeof(buf); | |
3431 | ||
3432 | c = ciphers; | |
3433 | while (*c != TLS_CIPHER_NONE) { | |
3434 | const char *suite; | |
3435 | ||
3436 | switch (*c) { | |
3437 | case TLS_CIPHER_RC4_SHA: | |
3438 | suite = "RC4-SHA"; | |
3439 | break; | |
3440 | case TLS_CIPHER_AES128_SHA: | |
3441 | suite = "AES128-SHA"; | |
3442 | break; | |
3443 | case TLS_CIPHER_RSA_DHE_AES128_SHA: | |
3444 | suite = "DHE-RSA-AES128-SHA"; | |
3445 | break; | |
3446 | case TLS_CIPHER_ANON_DH_AES128_SHA: | |
3447 | suite = "ADH-AES128-SHA"; | |
3448 | break; | |
750f5d99 JM |
3449 | case TLS_CIPHER_RSA_DHE_AES256_SHA: |
3450 | suite = "DHE-RSA-AES256-SHA"; | |
3451 | break; | |
3452 | case TLS_CIPHER_AES256_SHA: | |
3453 | suite = "AES256-SHA"; | |
3454 | break; | |
6fc6879b JM |
3455 | default: |
3456 | wpa_printf(MSG_DEBUG, "TLS: Unsupported " | |
3457 | "cipher selection: %d", *c); | |
3458 | return -1; | |
3459 | } | |
3460 | ret = os_snprintf(pos, end - pos, ":%s", suite); | |
d85e1fc8 | 3461 | if (os_snprintf_error(end - pos, ret)) |
6fc6879b JM |
3462 | break; |
3463 | pos += ret; | |
3464 | ||
3465 | c++; | |
3466 | } | |
3467 | ||
3468 | wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1); | |
3469 | ||
36e82060 | 3470 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER) |
c34cd668 JM |
3471 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
3472 | if (os_strstr(buf, ":ADH-")) { | |
3473 | /* | |
3474 | * Need to drop to security level 0 to allow anonymous | |
3475 | * cipher suites for EAP-FAST. | |
3476 | */ | |
3477 | SSL_set_security_level(conn->ssl, 0); | |
3478 | } else if (SSL_get_security_level(conn->ssl) == 0) { | |
3479 | /* Force at least security level 1 */ | |
3480 | SSL_set_security_level(conn->ssl, 1); | |
3481 | } | |
3482 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ | |
3483 | #endif | |
3484 | ||
6fc6879b JM |
3485 | if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) { |
3486 | tls_show_errors(MSG_INFO, __func__, | |
3487 | "Cipher suite configuration failed"); | |
3488 | return -1; | |
3489 | } | |
3490 | ||
3491 | return 0; | |
3492 | } | |
3493 | ||
3494 | ||
fe1bf329 JM |
3495 | int tls_get_version(void *ssl_ctx, struct tls_connection *conn, |
3496 | char *buf, size_t buflen) | |
3497 | { | |
3498 | const char *name; | |
3499 | if (conn == NULL || conn->ssl == NULL) | |
3500 | return -1; | |
3501 | ||
3502 | name = SSL_get_version(conn->ssl); | |
3503 | if (name == NULL) | |
3504 | return -1; | |
3505 | ||
3506 | os_strlcpy(buf, name, buflen); | |
3507 | return 0; | |
3508 | } | |
3509 | ||
3510 | ||
6fc6879b JM |
3511 | int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn, |
3512 | char *buf, size_t buflen) | |
3513 | { | |
3514 | const char *name; | |
3515 | if (conn == NULL || conn->ssl == NULL) | |
3516 | return -1; | |
3517 | ||
3518 | name = SSL_get_cipher(conn->ssl); | |
3519 | if (name == NULL) | |
3520 | return -1; | |
3521 | ||
3522 | os_strlcpy(buf, name, buflen); | |
3523 | return 0; | |
3524 | } | |
3525 | ||
3526 | ||
3527 | int tls_connection_enable_workaround(void *ssl_ctx, | |
3528 | struct tls_connection *conn) | |
3529 | { | |
3530 | SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS); | |
3531 | ||
3532 | return 0; | |
3533 | } | |
3534 | ||
3535 | ||
1e5839e0 | 3536 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
6fc6879b JM |
3537 | /* ClientHello TLS extensions require a patch to openssl, so this function is |
3538 | * commented out unless explicitly needed for EAP-FAST in order to be able to | |
3539 | * build this file with unmodified openssl. */ | |
3540 | int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn, | |
3541 | int ext_type, const u8 *data, | |
3542 | size_t data_len) | |
3543 | { | |
0cf03892 | 3544 | if (conn == NULL || conn->ssl == NULL || ext_type != 35) |
6fc6879b JM |
3545 | return -1; |
3546 | ||
0cf03892 JM |
3547 | if (SSL_set_session_ticket_ext(conn->ssl, (void *) data, |
3548 | data_len) != 1) | |
3549 | return -1; | |
6fc6879b JM |
3550 | |
3551 | return 0; | |
3552 | } | |
1e5839e0 | 3553 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b JM |
3554 | |
3555 | ||
3556 | int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn) | |
3557 | { | |
3558 | if (conn == NULL) | |
3559 | return -1; | |
3560 | return conn->failed; | |
3561 | } | |
3562 | ||
3563 | ||
3564 | int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn) | |
3565 | { | |
3566 | if (conn == NULL) | |
3567 | return -1; | |
3568 | return conn->read_alerts; | |
3569 | } | |
3570 | ||
3571 | ||
3572 | int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn) | |
3573 | { | |
3574 | if (conn == NULL) | |
3575 | return -1; | |
3576 | return conn->write_alerts; | |
3577 | } | |
3578 | ||
3579 | ||
080585c0 JM |
3580 | #ifdef HAVE_OCSP |
3581 | ||
3582 | static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp) | |
3583 | { | |
3584 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
080585c0 JM |
3585 | BIO *out; |
3586 | size_t rlen; | |
3587 | char *txt; | |
3588 | int res; | |
3589 | ||
3590 | if (wpa_debug_level > MSG_DEBUG) | |
3591 | return; | |
3592 | ||
3593 | out = BIO_new(BIO_s_mem()); | |
3594 | if (!out) | |
3595 | return; | |
3596 | ||
3597 | OCSP_RESPONSE_print(out, rsp, 0); | |
3598 | rlen = BIO_ctrl_pending(out); | |
3599 | txt = os_malloc(rlen + 1); | |
3600 | if (!txt) { | |
3601 | BIO_free(out); | |
3602 | return; | |
3603 | } | |
3604 | ||
3605 | res = BIO_read(out, txt, rlen); | |
3606 | if (res > 0) { | |
3607 | txt[res] = '\0'; | |
3608 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt); | |
3609 | } | |
3610 | os_free(txt); | |
3611 | BIO_free(out); | |
3612 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
3613 | } | |
3614 | ||
3615 | ||
4eb3b76b JM |
3616 | static void debug_print_cert(X509 *cert, const char *title) |
3617 | { | |
3618 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
3619 | BIO *out; | |
3620 | size_t rlen; | |
3621 | char *txt; | |
3622 | int res; | |
3623 | ||
3624 | if (wpa_debug_level > MSG_DEBUG) | |
3625 | return; | |
3626 | ||
3627 | out = BIO_new(BIO_s_mem()); | |
3628 | if (!out) | |
3629 | return; | |
3630 | ||
3631 | X509_print(out, cert); | |
3632 | rlen = BIO_ctrl_pending(out); | |
3633 | txt = os_malloc(rlen + 1); | |
3634 | if (!txt) { | |
3635 | BIO_free(out); | |
3636 | return; | |
3637 | } | |
3638 | ||
3639 | res = BIO_read(out, txt, rlen); | |
3640 | if (res > 0) { | |
3641 | txt[res] = '\0'; | |
3642 | wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt); | |
3643 | } | |
3644 | os_free(txt); | |
3645 | ||
3646 | BIO_free(out); | |
3647 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
3648 | } | |
3649 | ||
3650 | ||
080585c0 JM |
3651 | static int ocsp_resp_cb(SSL *s, void *arg) |
3652 | { | |
3653 | struct tls_connection *conn = arg; | |
3654 | const unsigned char *p; | |
3655 | int len, status, reason; | |
3656 | OCSP_RESPONSE *rsp; | |
3657 | OCSP_BASICRESP *basic; | |
3658 | OCSP_CERTID *id; | |
3659 | ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update; | |
6bf61fb2 JM |
3660 | X509_STORE *store; |
3661 | STACK_OF(X509) *certs = NULL; | |
080585c0 JM |
3662 | |
3663 | len = SSL_get_tlsext_status_ocsp_resp(s, &p); | |
3664 | if (!p) { | |
3665 | wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received"); | |
3666 | return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1; | |
3667 | } | |
3668 | ||
3669 | wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len); | |
3670 | ||
3671 | rsp = d2i_OCSP_RESPONSE(NULL, &p, len); | |
3672 | if (!rsp) { | |
3673 | wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response"); | |
3674 | return 0; | |
3675 | } | |
3676 | ||
3677 | ocsp_debug_print_resp(rsp); | |
3678 | ||
3679 | status = OCSP_response_status(rsp); | |
3680 | if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) { | |
3681 | wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)", | |
3682 | status, OCSP_response_status_str(status)); | |
3683 | return 0; | |
3684 | } | |
3685 | ||
3686 | basic = OCSP_response_get1_basic(rsp); | |
3687 | if (!basic) { | |
3688 | wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse"); | |
3689 | return 0; | |
3690 | } | |
3691 | ||
68ae4773 | 3692 | store = SSL_CTX_get_cert_store(conn->ssl_ctx); |
6bf61fb2 | 3693 | if (conn->peer_issuer) { |
4eb3b76b | 3694 | debug_print_cert(conn->peer_issuer, "Add OCSP issuer"); |
6bf61fb2 JM |
3695 | |
3696 | if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) { | |
3697 | tls_show_errors(MSG_INFO, __func__, | |
58d405fc | 3698 | "OpenSSL: Could not add issuer to certificate store"); |
6bf61fb2 JM |
3699 | } |
3700 | certs = sk_X509_new_null(); | |
3701 | if (certs) { | |
3702 | X509 *cert; | |
3703 | cert = X509_dup(conn->peer_issuer); | |
3704 | if (cert && !sk_X509_push(certs, cert)) { | |
3705 | tls_show_errors( | |
3706 | MSG_INFO, __func__, | |
58d405fc | 3707 | "OpenSSL: Could not add issuer to OCSP responder trust store"); |
6bf61fb2 JM |
3708 | X509_free(cert); |
3709 | sk_X509_free(certs); | |
3710 | certs = NULL; | |
3711 | } | |
710dfb4e | 3712 | if (certs && conn->peer_issuer_issuer) { |
6bf61fb2 JM |
3713 | cert = X509_dup(conn->peer_issuer_issuer); |
3714 | if (cert && !sk_X509_push(certs, cert)) { | |
3715 | tls_show_errors( | |
3716 | MSG_INFO, __func__, | |
58d405fc | 3717 | "OpenSSL: Could not add issuer's issuer to OCSP responder trust store"); |
6bf61fb2 JM |
3718 | X509_free(cert); |
3719 | } | |
3720 | } | |
3721 | } | |
3722 | } | |
3723 | ||
3724 | status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER); | |
3725 | sk_X509_pop_free(certs, X509_free); | |
080585c0 JM |
3726 | if (status <= 0) { |
3727 | tls_show_errors(MSG_INFO, __func__, | |
3728 | "OpenSSL: OCSP response failed verification"); | |
3729 | OCSP_BASICRESP_free(basic); | |
3730 | OCSP_RESPONSE_free(rsp); | |
3731 | return 0; | |
3732 | } | |
3733 | ||
3734 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded"); | |
3735 | ||
762c92a4 JM |
3736 | if (!conn->peer_cert) { |
3737 | wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check"); | |
3738 | OCSP_BASICRESP_free(basic); | |
3739 | OCSP_RESPONSE_free(rsp); | |
3740 | return 0; | |
3741 | } | |
3742 | ||
3743 | if (!conn->peer_issuer) { | |
3744 | wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check"); | |
080585c0 JM |
3745 | OCSP_BASICRESP_free(basic); |
3746 | OCSP_RESPONSE_free(rsp); | |
3747 | return 0; | |
3748 | } | |
3749 | ||
3750 | id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer); | |
3751 | if (!id) { | |
3752 | wpa_printf(MSG_DEBUG, "OpenSSL: Could not create OCSP certificate identifier"); | |
3753 | OCSP_BASICRESP_free(basic); | |
3754 | OCSP_RESPONSE_free(rsp); | |
3755 | return 0; | |
3756 | } | |
3757 | ||
3758 | if (!OCSP_resp_find_status(basic, id, &status, &reason, &produced_at, | |
3759 | &this_update, &next_update)) { | |
3760 | wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s", | |
3761 | (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" : | |
3762 | " (OCSP not required)"); | |
3763 | OCSP_BASICRESP_free(basic); | |
3764 | OCSP_RESPONSE_free(rsp); | |
3765 | return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1; | |
3766 | } | |
3767 | ||
3768 | if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) { | |
3769 | tls_show_errors(MSG_INFO, __func__, | |
3770 | "OpenSSL: OCSP status times invalid"); | |
3771 | OCSP_BASICRESP_free(basic); | |
3772 | OCSP_RESPONSE_free(rsp); | |
3773 | return 0; | |
3774 | } | |
3775 | ||
3776 | OCSP_BASICRESP_free(basic); | |
3777 | OCSP_RESPONSE_free(rsp); | |
3778 | ||
3779 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s", | |
3780 | OCSP_cert_status_str(status)); | |
3781 | ||
3782 | if (status == V_OCSP_CERTSTATUS_GOOD) | |
3783 | return 1; | |
3784 | if (status == V_OCSP_CERTSTATUS_REVOKED) | |
3785 | return 0; | |
3786 | if (conn->flags & TLS_CONN_REQUIRE_OCSP) { | |
3787 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required"); | |
3788 | return 0; | |
3789 | } | |
be7963b3 | 3790 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue"); |
080585c0 JM |
3791 | return 1; |
3792 | } | |
3793 | ||
3794 | ||
3795 | static int ocsp_status_cb(SSL *s, void *arg) | |
3796 | { | |
3797 | char *tmp; | |
3798 | char *resp; | |
3799 | size_t len; | |
3800 | ||
3801 | if (tls_global->ocsp_stapling_response == NULL) { | |
3802 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured"); | |
3803 | return SSL_TLSEXT_ERR_OK; | |
3804 | } | |
3805 | ||
3806 | resp = os_readfile(tls_global->ocsp_stapling_response, &len); | |
3807 | if (resp == NULL) { | |
3808 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file"); | |
3809 | /* TODO: Build OCSPResponse with responseStatus = internalError | |
3810 | */ | |
3811 | return SSL_TLSEXT_ERR_OK; | |
3812 | } | |
3813 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response"); | |
3814 | tmp = OPENSSL_malloc(len); | |
3815 | if (tmp == NULL) { | |
3816 | os_free(resp); | |
3817 | return SSL_TLSEXT_ERR_ALERT_FATAL; | |
3818 | } | |
3819 | ||
3820 | os_memcpy(tmp, resp, len); | |
3821 | os_free(resp); | |
3822 | SSL_set_tlsext_status_ocsp_resp(s, tmp, len); | |
3823 | ||
3824 | return SSL_TLSEXT_ERR_OK; | |
3825 | } | |
3826 | ||
3827 | #endif /* HAVE_OCSP */ | |
3828 | ||
3829 | ||
6fc6879b JM |
3830 | int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn, |
3831 | const struct tls_connection_params *params) | |
3832 | { | |
bd9b8b2b | 3833 | struct tls_data *data = tls_ctx; |
6fc6879b JM |
3834 | int ret; |
3835 | unsigned long err; | |
96955192 | 3836 | int can_pkcs11 = 0; |
01b0d1d5 DW |
3837 | const char *key_id = params->key_id; |
3838 | const char *cert_id = params->cert_id; | |
3839 | const char *ca_cert_id = params->ca_cert_id; | |
96955192 | 3840 | const char *engine_id = params->engine ? params->engine_id : NULL; |
6fc6879b JM |
3841 | |
3842 | if (conn == NULL) | |
3843 | return -1; | |
3844 | ||
d6b536f7 JM |
3845 | if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) { |
3846 | wpa_printf(MSG_INFO, | |
3847 | "OpenSSL: ocsp=3 not supported"); | |
3848 | return -1; | |
3849 | } | |
3850 | ||
01b0d1d5 | 3851 | /* |
96955192 DW |
3852 | * If the engine isn't explicitly configured, and any of the |
3853 | * cert/key fields are actually PKCS#11 URIs, then automatically | |
3854 | * use the PKCS#11 ENGINE. | |
01b0d1d5 | 3855 | */ |
96955192 DW |
3856 | if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0) |
3857 | can_pkcs11 = 1; | |
3858 | ||
3859 | if (!key_id && params->private_key && can_pkcs11 && | |
3860 | os_strncmp(params->private_key, "pkcs11:", 7) == 0) { | |
3861 | can_pkcs11 = 2; | |
01b0d1d5 | 3862 | key_id = params->private_key; |
96955192 | 3863 | } |
01b0d1d5 | 3864 | |
96955192 DW |
3865 | if (!cert_id && params->client_cert && can_pkcs11 && |
3866 | os_strncmp(params->client_cert, "pkcs11:", 7) == 0) { | |
3867 | can_pkcs11 = 2; | |
01b0d1d5 | 3868 | cert_id = params->client_cert; |
96955192 | 3869 | } |
01b0d1d5 | 3870 | |
96955192 DW |
3871 | if (!ca_cert_id && params->ca_cert && can_pkcs11 && |
3872 | os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) { | |
3873 | can_pkcs11 = 2; | |
01b0d1d5 | 3874 | ca_cert_id = params->ca_cert; |
96955192 DW |
3875 | } |
3876 | ||
3877 | /* If we need to automatically enable the PKCS#11 ENGINE, do so. */ | |
3878 | if (can_pkcs11 == 2 && !engine_id) | |
3879 | engine_id = "pkcs11"; | |
01b0d1d5 | 3880 | |
0f56057c | 3881 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
06836013 | 3882 | #if OPENSSL_VERSION_NUMBER < 0x10100000L |
6a31a31d JM |
3883 | if (params->flags & TLS_CONN_EAP_FAST) { |
3884 | wpa_printf(MSG_DEBUG, | |
3885 | "OpenSSL: Use TLSv1_method() for EAP-FAST"); | |
3886 | if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) { | |
3887 | tls_show_errors(MSG_INFO, __func__, | |
3888 | "Failed to set TLSv1_method() for EAP-FAST"); | |
3889 | return -1; | |
3890 | } | |
3891 | } | |
06836013 | 3892 | #endif |
0f56057c | 3893 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
d4913c58 | 3894 | |
6fc6879b JM |
3895 | while ((err = ERR_get_error())) { |
3896 | wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s", | |
3897 | __func__, ERR_error_string(err, NULL)); | |
3898 | } | |
3899 | ||
96955192 | 3900 | if (engine_id) { |
e59c91af | 3901 | wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine"); |
96955192 | 3902 | ret = tls_engine_init(conn, engine_id, params->pin, |
01b0d1d5 | 3903 | key_id, cert_id, ca_cert_id); |
e59c91af DS |
3904 | if (ret) |
3905 | return ret; | |
3906 | } | |
6fc6879b JM |
3907 | if (tls_connection_set_subject_match(conn, |
3908 | params->subject_match, | |
01f809c7 | 3909 | params->altsubject_match, |
cebee30f JM |
3910 | params->suffix_match, |
3911 | params->domain_match)) | |
6fc6879b | 3912 | return -1; |
e59c91af | 3913 | |
96955192 | 3914 | if (engine_id && ca_cert_id) { |
bd9b8b2b | 3915 | if (tls_connection_engine_ca_cert(data, conn, ca_cert_id)) |
e59c91af | 3916 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; |
bd9b8b2b | 3917 | } else if (tls_connection_ca_cert(data, conn, params->ca_cert, |
e59c91af DS |
3918 | params->ca_cert_blob, |
3919 | params->ca_cert_blob_len, | |
3920 | params->ca_path)) | |
6fc6879b | 3921 | return -1; |
e59c91af | 3922 | |
96955192 | 3923 | if (engine_id && cert_id) { |
01b0d1d5 | 3924 | if (tls_connection_engine_client_cert(conn, cert_id)) |
e59c91af DS |
3925 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; |
3926 | } else if (tls_connection_client_cert(conn, params->client_cert, | |
3927 | params->client_cert_blob, | |
3928 | params->client_cert_blob_len)) | |
6fc6879b JM |
3929 | return -1; |
3930 | ||
96955192 | 3931 | if (engine_id && key_id) { |
e59c91af | 3932 | wpa_printf(MSG_DEBUG, "TLS: Using private key from engine"); |
6fc6879b JM |
3933 | if (tls_connection_engine_private_key(conn)) |
3934 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; | |
bd9b8b2b | 3935 | } else if (tls_connection_private_key(data, conn, |
6fc6879b JM |
3936 | params->private_key, |
3937 | params->private_key_passwd, | |
3938 | params->private_key_blob, | |
3939 | params->private_key_blob_len)) { | |
3940 | wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'", | |
3941 | params->private_key); | |
3942 | return -1; | |
3943 | } | |
3944 | ||
3945 | if (tls_connection_dh(conn, params->dh_file)) { | |
3946 | wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'", | |
3947 | params->dh_file); | |
3948 | return -1; | |
3949 | } | |
3950 | ||
b7328434 JM |
3951 | if (params->openssl_ciphers && |
3952 | SSL_set_cipher_list(conn->ssl, params->openssl_ciphers) != 1) { | |
3953 | wpa_printf(MSG_INFO, | |
3954 | "OpenSSL: Failed to set cipher string '%s'", | |
3955 | params->openssl_ciphers); | |
3956 | return -1; | |
3957 | } | |
3958 | ||
93bc6549 | 3959 | tls_set_conn_flags(conn->ssl, params->flags); |
e9a6f183 | 3960 | |
bdee6ca0 JM |
3961 | #ifdef OPENSSL_IS_BORINGSSL |
3962 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
3963 | SSL_enable_ocsp_stapling(conn->ssl); | |
3964 | } | |
3965 | #else /* OPENSSL_IS_BORINGSSL */ | |
080585c0 JM |
3966 | #ifdef HAVE_OCSP |
3967 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
bd9b8b2b | 3968 | SSL_CTX *ssl_ctx = data->ssl; |
080585c0 JM |
3969 | SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp); |
3970 | SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb); | |
3971 | SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn); | |
3972 | } | |
355a5c8e JM |
3973 | #else /* HAVE_OCSP */ |
3974 | if (params->flags & TLS_CONN_REQUIRE_OCSP) { | |
3975 | wpa_printf(MSG_INFO, | |
3976 | "OpenSSL: No OCSP support included - reject configuration"); | |
3977 | return -1; | |
3978 | } | |
3979 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
3980 | wpa_printf(MSG_DEBUG, | |
3981 | "OpenSSL: No OCSP support included - allow optional OCSP case to continue"); | |
3982 | } | |
080585c0 | 3983 | #endif /* HAVE_OCSP */ |
bdee6ca0 | 3984 | #endif /* OPENSSL_IS_BORINGSSL */ |
080585c0 | 3985 | |
235279e7 JM |
3986 | conn->flags = params->flags; |
3987 | ||
bd9b8b2b | 3988 | tls_get_errors(data); |
6fc6879b JM |
3989 | |
3990 | return 0; | |
3991 | } | |
3992 | ||
3993 | ||
3994 | int tls_global_set_params(void *tls_ctx, | |
3995 | const struct tls_connection_params *params) | |
3996 | { | |
bd9b8b2b JM |
3997 | struct tls_data *data = tls_ctx; |
3998 | SSL_CTX *ssl_ctx = data->ssl; | |
6fc6879b JM |
3999 | unsigned long err; |
4000 | ||
4001 | while ((err = ERR_get_error())) { | |
4002 | wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s", | |
4003 | __func__, ERR_error_string(err, NULL)); | |
4004 | } | |
4005 | ||
bd9b8b2b JM |
4006 | if (tls_global_ca_cert(data, params->ca_cert) || |
4007 | tls_global_client_cert(data, params->client_cert) || | |
4008 | tls_global_private_key(data, params->private_key, | |
f24b9797 | 4009 | params->private_key_passwd) || |
bd9b8b2b | 4010 | tls_global_dh(data, params->dh_file)) { |
f24b9797 | 4011 | wpa_printf(MSG_INFO, "TLS: Failed to set global parameters"); |
6fc6879b JM |
4012 | return -1; |
4013 | } | |
4014 | ||
b7328434 JM |
4015 | if (params->openssl_ciphers && |
4016 | SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) { | |
4017 | wpa_printf(MSG_INFO, | |
4018 | "OpenSSL: Failed to set cipher string '%s'", | |
4019 | params->openssl_ciphers); | |
4020 | return -1; | |
4021 | } | |
4022 | ||
e866f39f JM |
4023 | #ifdef SSL_OP_NO_TICKET |
4024 | if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET) | |
4025 | SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET); | |
d53d2596 | 4026 | #ifdef SSL_CTX_clear_options |
e866f39f JM |
4027 | else |
4028 | SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET); | |
d53d2596 | 4029 | #endif /* SSL_clear_options */ |
e866f39f JM |
4030 | #endif /* SSL_OP_NO_TICKET */ |
4031 | ||
080585c0 JM |
4032 | #ifdef HAVE_OCSP |
4033 | SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb); | |
4034 | SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx); | |
4035 | os_free(tls_global->ocsp_stapling_response); | |
4036 | if (params->ocsp_stapling_response) | |
4037 | tls_global->ocsp_stapling_response = | |
4038 | os_strdup(params->ocsp_stapling_response); | |
4039 | else | |
4040 | tls_global->ocsp_stapling_response = NULL; | |
4041 | #endif /* HAVE_OCSP */ | |
4042 | ||
6fc6879b JM |
4043 | return 0; |
4044 | } | |
4045 | ||
4046 | ||
1e5839e0 | 4047 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
6fc6879b JM |
4048 | /* Pre-shared secred requires a patch to openssl, so this function is |
4049 | * commented out unless explicitly needed for EAP-FAST in order to be able to | |
4050 | * build this file with unmodified openssl. */ | |
4051 | ||
587b0457 | 4052 | #if (defined(OPENSSL_IS_BORINGSSL) || OPENSSL_VERSION_NUMBER >= 0x10100000L) && !defined(LIBRESSL_VERSION_NUMBER) |
a8572960 AL |
4053 | static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len, |
4054 | STACK_OF(SSL_CIPHER) *peer_ciphers, | |
4055 | const SSL_CIPHER **cipher, void *arg) | |
4056 | #else /* OPENSSL_IS_BORINGSSL */ | |
6fc6879b JM |
4057 | static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len, |
4058 | STACK_OF(SSL_CIPHER) *peer_ciphers, | |
4059 | SSL_CIPHER **cipher, void *arg) | |
a8572960 | 4060 | #endif /* OPENSSL_IS_BORINGSSL */ |
6fc6879b JM |
4061 | { |
4062 | struct tls_connection *conn = arg; | |
4063 | int ret; | |
4064 | ||
36e82060 | 4065 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
6fc6879b JM |
4066 | if (conn == NULL || conn->session_ticket_cb == NULL) |
4067 | return 0; | |
4068 | ||
4069 | ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx, | |
4070 | conn->session_ticket, | |
4071 | conn->session_ticket_len, | |
4072 | s->s3->client_random, | |
4073 | s->s3->server_random, secret); | |
4d2a1b4f JM |
4074 | #else |
4075 | unsigned char client_random[SSL3_RANDOM_SIZE]; | |
4076 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
4077 | ||
4078 | if (conn == NULL || conn->session_ticket_cb == NULL) | |
4079 | return 0; | |
4080 | ||
4081 | SSL_get_client_random(s, client_random, sizeof(client_random)); | |
4082 | SSL_get_server_random(s, server_random, sizeof(server_random)); | |
4083 | ||
4084 | ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx, | |
4085 | conn->session_ticket, | |
4086 | conn->session_ticket_len, | |
4087 | client_random, | |
4088 | server_random, secret); | |
4089 | #endif | |
4090 | ||
6fc6879b JM |
4091 | os_free(conn->session_ticket); |
4092 | conn->session_ticket = NULL; | |
4093 | ||
4094 | if (ret <= 0) | |
4095 | return 0; | |
4096 | ||
4097 | *secret_len = SSL_MAX_MASTER_KEY_LENGTH; | |
4098 | return 1; | |
4099 | } | |
4100 | ||
4101 | ||
0cf03892 JM |
4102 | static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data, |
4103 | int len, void *arg) | |
4104 | { | |
4105 | struct tls_connection *conn = arg; | |
4106 | ||
4107 | if (conn == NULL || conn->session_ticket_cb == NULL) | |
4108 | return 0; | |
4109 | ||
4110 | wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len); | |
4111 | ||
4112 | os_free(conn->session_ticket); | |
4113 | conn->session_ticket = NULL; | |
4114 | ||
4115 | wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket " | |
4116 | "extension", data, len); | |
4117 | ||
4118 | conn->session_ticket = os_malloc(len); | |
4119 | if (conn->session_ticket == NULL) | |
4120 | return 0; | |
4121 | ||
4122 | os_memcpy(conn->session_ticket, data, len); | |
4123 | conn->session_ticket_len = len; | |
4124 | ||
4125 | return 1; | |
4126 | } | |
1e5839e0 | 4127 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b JM |
4128 | |
4129 | ||
4130 | int tls_connection_set_session_ticket_cb(void *tls_ctx, | |
4131 | struct tls_connection *conn, | |
4132 | tls_session_ticket_cb cb, | |
4133 | void *ctx) | |
4134 | { | |
1e5839e0 | 4135 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
6fc6879b JM |
4136 | conn->session_ticket_cb = cb; |
4137 | conn->session_ticket_cb_ctx = ctx; | |
4138 | ||
4139 | if (cb) { | |
4140 | if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb, | |
4141 | conn) != 1) | |
4142 | return -1; | |
0cf03892 JM |
4143 | SSL_set_session_ticket_ext_cb(conn->ssl, |
4144 | tls_session_ticket_ext_cb, conn); | |
6fc6879b JM |
4145 | } else { |
4146 | if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1) | |
4147 | return -1; | |
0cf03892 | 4148 | SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL); |
6fc6879b JM |
4149 | } |
4150 | ||
4151 | return 0; | |
1e5839e0 | 4152 | #else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b | 4153 | return -1; |
1e5839e0 | 4154 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b | 4155 | } |
a1651451 JM |
4156 | |
4157 | ||
4158 | int tls_get_library_version(char *buf, size_t buf_len) | |
4159 | { | |
587b0457 | 4160 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER) |
b34c623c JM |
4161 | return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s", |
4162 | OPENSSL_VERSION_TEXT, | |
4163 | OpenSSL_version(OPENSSL_VERSION)); | |
4164 | #else | |
a1651451 JM |
4165 | return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s", |
4166 | OPENSSL_VERSION_TEXT, | |
4167 | SSLeay_version(SSLEAY_VERSION)); | |
b34c623c | 4168 | #endif |
a1651451 | 4169 | } |
b3b8085a JM |
4170 | |
4171 | ||
4172 | void tls_connection_set_success_data(struct tls_connection *conn, | |
4173 | struct wpabuf *data) | |
4174 | { | |
acf36f31 JM |
4175 | SSL_SESSION *sess; |
4176 | struct wpabuf *old; | |
4177 | ||
4178 | if (tls_ex_idx_session < 0) | |
4179 | goto fail; | |
4180 | sess = SSL_get_session(conn->ssl); | |
4181 | if (!sess) | |
4182 | goto fail; | |
4183 | old = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
4184 | if (old) { | |
4185 | wpa_printf(MSG_DEBUG, "OpenSSL: Replacing old success data %p", | |
4186 | old); | |
4187 | wpabuf_free(old); | |
4188 | } | |
4189 | if (SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1) | |
4190 | goto fail; | |
4191 | ||
4192 | wpa_printf(MSG_DEBUG, "OpenSSL: Stored success data %p", data); | |
4193 | conn->success_data = 1; | |
4194 | return; | |
4195 | ||
4196 | fail: | |
4197 | wpa_printf(MSG_INFO, "OpenSSL: Failed to store success data"); | |
4198 | wpabuf_free(data); | |
b3b8085a JM |
4199 | } |
4200 | ||
4201 | ||
4202 | void tls_connection_set_success_data_resumed(struct tls_connection *conn) | |
4203 | { | |
acf36f31 JM |
4204 | wpa_printf(MSG_DEBUG, |
4205 | "OpenSSL: Success data accepted for resumed session"); | |
4206 | conn->success_data = 1; | |
b3b8085a JM |
4207 | } |
4208 | ||
4209 | ||
4210 | const struct wpabuf * | |
4211 | tls_connection_get_success_data(struct tls_connection *conn) | |
4212 | { | |
acf36f31 JM |
4213 | SSL_SESSION *sess; |
4214 | ||
4215 | if (tls_ex_idx_session < 0 || | |
4216 | !(sess = SSL_get_session(conn->ssl))) | |
4217 | return NULL; | |
4218 | return SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
b3b8085a JM |
4219 | } |
4220 | ||
4221 | ||
4222 | void tls_connection_remove_session(struct tls_connection *conn) | |
4223 | { | |
acf36f31 JM |
4224 | SSL_SESSION *sess; |
4225 | ||
4226 | sess = SSL_get_session(conn->ssl); | |
4227 | if (!sess) | |
4228 | return; | |
4229 | ||
4230 | if (SSL_CTX_remove_session(conn->ssl_ctx, sess) != 1) | |
4231 | wpa_printf(MSG_DEBUG, | |
4232 | "OpenSSL: Session was not cached"); | |
4233 | else | |
4234 | wpa_printf(MSG_DEBUG, | |
4235 | "OpenSSL: Removed cached session to disable session resumption"); | |
b3b8085a | 4236 | } |