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Commit | Line | Data |
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6fc6879b | 1 | /* |
81c85c06 | 2 | * SSL/TLS interface functions for OpenSSL |
16bc3b89 | 3 | * Copyright (c) 2004-2015, Jouni Malinen <j@w1.fi> |
6fc6879b | 4 | * |
0f3d578e JM |
5 | * This software may be distributed under the terms of the BSD license. |
6 | * See README for more details. | |
6fc6879b JM |
7 | */ |
8 | ||
9 | #include "includes.h" | |
10 | ||
11 | #ifndef CONFIG_SMARTCARD | |
12 | #ifndef OPENSSL_NO_ENGINE | |
1176ab6d | 13 | #ifndef ANDROID |
6fc6879b JM |
14 | #define OPENSSL_NO_ENGINE |
15 | #endif | |
16 | #endif | |
1176ab6d | 17 | #endif |
6fc6879b JM |
18 | |
19 | #include <openssl/ssl.h> | |
20 | #include <openssl/err.h> | |
e4471338 | 21 | #include <openssl/opensslv.h> |
6fc6879b JM |
22 | #include <openssl/pkcs12.h> |
23 | #include <openssl/x509v3.h> | |
24 | #ifndef OPENSSL_NO_ENGINE | |
25 | #include <openssl/engine.h> | |
26 | #endif /* OPENSSL_NO_ENGINE */ | |
690e543e JM |
27 | #ifndef OPENSSL_NO_DSA |
28 | #include <openssl/dsa.h> | |
29 | #endif | |
30 | #ifndef OPENSSL_NO_DH | |
31 | #include <openssl/dh.h> | |
32 | #endif | |
6fc6879b JM |
33 | |
34 | #include "common.h" | |
00468b46 | 35 | #include "crypto.h" |
fa0e7151 | 36 | #include "sha1.h" |
16bc3b89 | 37 | #include "sha256.h" |
6fc6879b | 38 | #include "tls.h" |
213e158c | 39 | #include "tls_openssl.h" |
6fc6879b | 40 | |
1cece2fa DB |
41 | #if !defined(CONFIG_FIPS) && \ |
42 | (defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || \ | |
43 | defined(EAP_SERVER_FAST)) | |
44 | #define OPENSSL_NEED_EAP_FAST_PRF | |
45 | #endif | |
46 | ||
a8572960 AL |
47 | #if defined(OPENSSL_IS_BORINGSSL) |
48 | /* stack_index_t is the return type of OpenSSL's sk_XXX_num() functions. */ | |
49 | typedef size_t stack_index_t; | |
50 | #else | |
51 | typedef int stack_index_t; | |
0cf03892 JM |
52 | #endif |
53 | ||
080585c0 JM |
54 | #ifdef SSL_set_tlsext_status_type |
55 | #ifndef OPENSSL_NO_TLSEXT | |
56 | #define HAVE_OCSP | |
57 | #include <openssl/ocsp.h> | |
58 | #endif /* OPENSSL_NO_TLSEXT */ | |
59 | #endif /* SSL_set_tlsext_status_type */ | |
60 | ||
e4471338 DB |
61 | #if (OPENSSL_VERSION_NUMBER < 0x10100000L || \ |
62 | defined(LIBRESSL_VERSION_NUMBER)) && \ | |
63 | !defined(BORINGSSL_API_VERSION) | |
dea20519 JM |
64 | /* |
65 | * SSL_get_client_random() and SSL_get_server_random() were added in OpenSSL | |
e4471338 DB |
66 | * 1.1.0 and newer BoringSSL revisions. Provide compatibility wrappers for |
67 | * older versions. | |
dea20519 JM |
68 | */ |
69 | ||
70 | static size_t SSL_get_client_random(const SSL *ssl, unsigned char *out, | |
71 | size_t outlen) | |
72 | { | |
73 | if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE) | |
74 | return 0; | |
75 | os_memcpy(out, ssl->s3->client_random, SSL3_RANDOM_SIZE); | |
76 | return SSL3_RANDOM_SIZE; | |
77 | } | |
78 | ||
79 | ||
80 | static size_t SSL_get_server_random(const SSL *ssl, unsigned char *out, | |
81 | size_t outlen) | |
82 | { | |
83 | if (!ssl->s3 || outlen < SSL3_RANDOM_SIZE) | |
84 | return 0; | |
85 | os_memcpy(out, ssl->s3->server_random, SSL3_RANDOM_SIZE); | |
86 | return SSL3_RANDOM_SIZE; | |
87 | } | |
88 | ||
1ebb24bb | 89 | |
1cece2fa | 90 | #ifdef OPENSSL_NEED_EAP_FAST_PRF |
1ebb24bb JM |
91 | static size_t SSL_SESSION_get_master_key(const SSL_SESSION *session, |
92 | unsigned char *out, size_t outlen) | |
93 | { | |
94 | if (!session || session->master_key_length < 0 || | |
95 | (size_t) session->master_key_length > outlen) | |
96 | return 0; | |
97 | if ((size_t) session->master_key_length < outlen) | |
98 | outlen = session->master_key_length; | |
99 | os_memcpy(out, session->master_key, outlen); | |
100 | return outlen; | |
101 | } | |
1cece2fa | 102 | #endif /* OPENSSL_NEED_EAP_FAST_PRF */ |
1ebb24bb | 103 | |
dea20519 JM |
104 | #endif |
105 | ||
1d415f1f KR |
106 | #ifdef ANDROID |
107 | #include <openssl/pem.h> | |
108 | #include <keystore/keystore_get.h> | |
109 | ||
110 | static BIO * BIO_from_keystore(const char *key) | |
111 | { | |
112 | BIO *bio = NULL; | |
113 | uint8_t *value = NULL; | |
114 | int length = keystore_get(key, strlen(key), &value); | |
115 | if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL) | |
116 | BIO_write(bio, value, length); | |
117 | free(value); | |
118 | return bio; | |
119 | } | |
a8ef133f RX |
120 | |
121 | ||
122 | static int tls_add_ca_from_keystore(X509_STORE *ctx, const char *key_alias) | |
123 | { | |
124 | BIO *bio = BIO_from_keystore(key_alias); | |
125 | STACK_OF(X509_INFO) *stack = NULL; | |
126 | stack_index_t i; | |
127 | ||
128 | if (bio) { | |
129 | stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL); | |
130 | BIO_free(bio); | |
131 | } | |
132 | ||
133 | if (!stack) { | |
134 | wpa_printf(MSG_WARNING, "TLS: Failed to parse certificate: %s", | |
135 | key_alias); | |
136 | return -1; | |
137 | } | |
138 | ||
139 | for (i = 0; i < sk_X509_INFO_num(stack); ++i) { | |
140 | X509_INFO *info = sk_X509_INFO_value(stack, i); | |
141 | ||
142 | if (info->x509) | |
143 | X509_STORE_add_cert(ctx, info->x509); | |
144 | if (info->crl) | |
145 | X509_STORE_add_crl(ctx, info->crl); | |
146 | } | |
147 | ||
148 | sk_X509_INFO_pop_free(stack, X509_INFO_free); | |
149 | ||
150 | return 0; | |
151 | } | |
152 | ||
153 | ||
154 | static int tls_add_ca_from_keystore_encoded(X509_STORE *ctx, | |
155 | const char *encoded_key_alias) | |
156 | { | |
157 | int rc = -1; | |
158 | int len = os_strlen(encoded_key_alias); | |
159 | unsigned char *decoded_alias; | |
160 | ||
161 | if (len & 1) { | |
162 | wpa_printf(MSG_WARNING, "Invalid hex-encoded alias: %s", | |
163 | encoded_key_alias); | |
164 | return rc; | |
165 | } | |
166 | ||
167 | decoded_alias = os_malloc(len / 2 + 1); | |
168 | if (decoded_alias) { | |
169 | if (!hexstr2bin(encoded_key_alias, decoded_alias, len / 2)) { | |
170 | decoded_alias[len / 2] = '\0'; | |
171 | rc = tls_add_ca_from_keystore( | |
172 | ctx, (const char *) decoded_alias); | |
173 | } | |
174 | os_free(decoded_alias); | |
175 | } | |
176 | ||
177 | return rc; | |
178 | } | |
179 | ||
1d415f1f KR |
180 | #endif /* ANDROID */ |
181 | ||
6fc6879b | 182 | static int tls_openssl_ref_count = 0; |
acf36f31 | 183 | static int tls_ex_idx_session = -1; |
6fc6879b | 184 | |
7c0e1e27 | 185 | struct tls_context { |
00468b46 JM |
186 | void (*event_cb)(void *ctx, enum tls_event ev, |
187 | union tls_event_data *data); | |
188 | void *cb_ctx; | |
1b414f59 | 189 | int cert_in_cb; |
080585c0 | 190 | char *ocsp_stapling_response; |
00468b46 JM |
191 | }; |
192 | ||
7c0e1e27 | 193 | static struct tls_context *tls_global = NULL; |
00468b46 JM |
194 | |
195 | ||
bd9b8b2b JM |
196 | struct tls_data { |
197 | SSL_CTX *ssl; | |
acf36f31 | 198 | unsigned int tls_session_lifetime; |
bd9b8b2b JM |
199 | }; |
200 | ||
6fc6879b | 201 | struct tls_connection { |
7c0e1e27 | 202 | struct tls_context *context; |
68ae4773 | 203 | SSL_CTX *ssl_ctx; |
6fc6879b JM |
204 | SSL *ssl; |
205 | BIO *ssl_in, *ssl_out; | |
aeeb0bca | 206 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
207 | ENGINE *engine; /* functional reference to the engine */ |
208 | EVP_PKEY *private_key; /* the private key if using engine */ | |
209 | #endif /* OPENSSL_NO_ENGINE */ | |
cebee30f | 210 | char *subject_match, *altsubject_match, *suffix_match, *domain_match; |
6fc6879b JM |
211 | int read_alerts, write_alerts, failed; |
212 | ||
213 | tls_session_ticket_cb session_ticket_cb; | |
214 | void *session_ticket_cb_ctx; | |
215 | ||
216 | /* SessionTicket received from OpenSSL hello_extension_cb (server) */ | |
217 | u8 *session_ticket; | |
218 | size_t session_ticket_len; | |
00468b46 | 219 | |
8d6399e4 JM |
220 | unsigned int ca_cert_verify:1; |
221 | unsigned int cert_probe:1; | |
222 | unsigned int server_cert_only:1; | |
bb52293e | 223 | unsigned int invalid_hb_used:1; |
acf36f31 | 224 | unsigned int success_data:1; |
00468b46 JM |
225 | |
226 | u8 srv_cert_hash[32]; | |
235279e7 JM |
227 | |
228 | unsigned int flags; | |
080585c0 JM |
229 | |
230 | X509 *peer_cert; | |
231 | X509 *peer_issuer; | |
6bf61fb2 | 232 | X509 *peer_issuer_issuer; |
005c5dcf | 233 | |
005c5dcf JM |
234 | unsigned char client_random[SSL3_RANDOM_SIZE]; |
235 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
6fc6879b JM |
236 | }; |
237 | ||
238 | ||
7c0e1e27 PS |
239 | static struct tls_context * tls_context_new(const struct tls_config *conf) |
240 | { | |
241 | struct tls_context *context = os_zalloc(sizeof(*context)); | |
242 | if (context == NULL) | |
243 | return NULL; | |
244 | if (conf) { | |
245 | context->event_cb = conf->event_cb; | |
246 | context->cb_ctx = conf->cb_ctx; | |
247 | context->cert_in_cb = conf->cert_in_cb; | |
248 | } | |
249 | return context; | |
250 | } | |
251 | ||
252 | ||
6fc6879b JM |
253 | #ifdef CONFIG_NO_STDOUT_DEBUG |
254 | ||
255 | static void _tls_show_errors(void) | |
256 | { | |
257 | unsigned long err; | |
258 | ||
259 | while ((err = ERR_get_error())) { | |
260 | /* Just ignore the errors, since stdout is disabled */ | |
261 | } | |
262 | } | |
263 | #define tls_show_errors(l, f, t) _tls_show_errors() | |
264 | ||
265 | #else /* CONFIG_NO_STDOUT_DEBUG */ | |
266 | ||
267 | static void tls_show_errors(int level, const char *func, const char *txt) | |
268 | { | |
269 | unsigned long err; | |
270 | ||
271 | wpa_printf(level, "OpenSSL: %s - %s %s", | |
272 | func, txt, ERR_error_string(ERR_get_error(), NULL)); | |
273 | ||
274 | while ((err = ERR_get_error())) { | |
275 | wpa_printf(MSG_INFO, "OpenSSL: pending error: %s", | |
276 | ERR_error_string(err, NULL)); | |
277 | } | |
278 | } | |
279 | ||
280 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
281 | ||
282 | ||
283 | #ifdef CONFIG_NATIVE_WINDOWS | |
284 | ||
285 | /* Windows CryptoAPI and access to certificate stores */ | |
286 | #include <wincrypt.h> | |
287 | ||
288 | #ifdef __MINGW32_VERSION | |
289 | /* | |
290 | * MinGW does not yet include all the needed definitions for CryptoAPI, so | |
291 | * define here whatever extra is needed. | |
292 | */ | |
6fc6879b JM |
293 | #define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16) |
294 | #define CERT_STORE_READONLY_FLAG 0x00008000 | |
295 | #define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000 | |
6fc6879b JM |
296 | |
297 | #endif /* __MINGW32_VERSION */ | |
298 | ||
299 | ||
300 | struct cryptoapi_rsa_data { | |
301 | const CERT_CONTEXT *cert; | |
302 | HCRYPTPROV crypt_prov; | |
303 | DWORD key_spec; | |
304 | BOOL free_crypt_prov; | |
305 | }; | |
306 | ||
307 | ||
308 | static void cryptoapi_error(const char *msg) | |
309 | { | |
310 | wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u", | |
311 | msg, (unsigned int) GetLastError()); | |
312 | } | |
313 | ||
314 | ||
315 | static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from, | |
316 | unsigned char *to, RSA *rsa, int padding) | |
317 | { | |
318 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
319 | return 0; | |
320 | } | |
321 | ||
322 | ||
323 | static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from, | |
324 | unsigned char *to, RSA *rsa, int padding) | |
325 | { | |
326 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
327 | return 0; | |
328 | } | |
329 | ||
330 | ||
331 | static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from, | |
332 | unsigned char *to, RSA *rsa, int padding) | |
333 | { | |
334 | struct cryptoapi_rsa_data *priv = | |
335 | (struct cryptoapi_rsa_data *) rsa->meth->app_data; | |
336 | HCRYPTHASH hash; | |
337 | DWORD hash_size, len, i; | |
338 | unsigned char *buf = NULL; | |
339 | int ret = 0; | |
340 | ||
341 | if (priv == NULL) { | |
342 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
343 | ERR_R_PASSED_NULL_PARAMETER); | |
344 | return 0; | |
345 | } | |
346 | ||
347 | if (padding != RSA_PKCS1_PADDING) { | |
348 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
349 | RSA_R_UNKNOWN_PADDING_TYPE); | |
350 | return 0; | |
351 | } | |
352 | ||
353 | if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) { | |
354 | wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported", | |
355 | __func__); | |
356 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
357 | RSA_R_INVALID_MESSAGE_LENGTH); | |
358 | return 0; | |
359 | } | |
360 | ||
361 | if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash)) | |
362 | { | |
363 | cryptoapi_error("CryptCreateHash failed"); | |
364 | return 0; | |
365 | } | |
366 | ||
367 | len = sizeof(hash_size); | |
368 | if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len, | |
369 | 0)) { | |
370 | cryptoapi_error("CryptGetHashParam failed"); | |
371 | goto err; | |
372 | } | |
373 | ||
374 | if ((int) hash_size != flen) { | |
375 | wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)", | |
376 | (unsigned) hash_size, flen); | |
377 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, | |
378 | RSA_R_INVALID_MESSAGE_LENGTH); | |
379 | goto err; | |
380 | } | |
381 | if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) { | |
382 | cryptoapi_error("CryptSetHashParam failed"); | |
383 | goto err; | |
384 | } | |
385 | ||
386 | len = RSA_size(rsa); | |
387 | buf = os_malloc(len); | |
388 | if (buf == NULL) { | |
389 | RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE); | |
390 | goto err; | |
391 | } | |
392 | ||
393 | if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) { | |
394 | cryptoapi_error("CryptSignHash failed"); | |
395 | goto err; | |
396 | } | |
397 | ||
398 | for (i = 0; i < len; i++) | |
399 | to[i] = buf[len - i - 1]; | |
400 | ret = len; | |
401 | ||
402 | err: | |
403 | os_free(buf); | |
404 | CryptDestroyHash(hash); | |
405 | ||
406 | return ret; | |
407 | } | |
408 | ||
409 | ||
410 | static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from, | |
411 | unsigned char *to, RSA *rsa, int padding) | |
412 | { | |
413 | wpa_printf(MSG_DEBUG, "%s - not implemented", __func__); | |
414 | return 0; | |
415 | } | |
416 | ||
417 | ||
418 | static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv) | |
419 | { | |
420 | if (priv == NULL) | |
421 | return; | |
422 | if (priv->crypt_prov && priv->free_crypt_prov) | |
423 | CryptReleaseContext(priv->crypt_prov, 0); | |
424 | if (priv->cert) | |
425 | CertFreeCertificateContext(priv->cert); | |
426 | os_free(priv); | |
427 | } | |
428 | ||
429 | ||
430 | static int cryptoapi_finish(RSA *rsa) | |
431 | { | |
432 | cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data); | |
433 | os_free((void *) rsa->meth); | |
434 | rsa->meth = NULL; | |
435 | return 1; | |
436 | } | |
437 | ||
438 | ||
439 | static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store) | |
440 | { | |
441 | HCERTSTORE cs; | |
442 | const CERT_CONTEXT *ret = NULL; | |
443 | ||
444 | cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0, | |
445 | store | CERT_STORE_OPEN_EXISTING_FLAG | | |
446 | CERT_STORE_READONLY_FLAG, L"MY"); | |
447 | if (cs == NULL) { | |
448 | cryptoapi_error("Failed to open 'My system store'"); | |
449 | return NULL; | |
450 | } | |
451 | ||
452 | if (strncmp(name, "cert://", 7) == 0) { | |
453 | unsigned short wbuf[255]; | |
454 | MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255); | |
455 | ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING | | |
456 | PKCS_7_ASN_ENCODING, | |
457 | 0, CERT_FIND_SUBJECT_STR, | |
458 | wbuf, NULL); | |
459 | } else if (strncmp(name, "hash://", 7) == 0) { | |
460 | CRYPT_HASH_BLOB blob; | |
461 | int len; | |
462 | const char *hash = name + 7; | |
463 | unsigned char *buf; | |
464 | ||
465 | len = os_strlen(hash) / 2; | |
466 | buf = os_malloc(len); | |
467 | if (buf && hexstr2bin(hash, buf, len) == 0) { | |
468 | blob.cbData = len; | |
469 | blob.pbData = buf; | |
470 | ret = CertFindCertificateInStore(cs, | |
471 | X509_ASN_ENCODING | | |
472 | PKCS_7_ASN_ENCODING, | |
473 | 0, CERT_FIND_HASH, | |
474 | &blob, NULL); | |
475 | } | |
476 | os_free(buf); | |
477 | } | |
478 | ||
479 | CertCloseStore(cs, 0); | |
480 | ||
481 | return ret; | |
482 | } | |
483 | ||
484 | ||
485 | static int tls_cryptoapi_cert(SSL *ssl, const char *name) | |
486 | { | |
487 | X509 *cert = NULL; | |
488 | RSA *rsa = NULL, *pub_rsa; | |
489 | struct cryptoapi_rsa_data *priv; | |
490 | RSA_METHOD *rsa_meth; | |
491 | ||
492 | if (name == NULL || | |
493 | (strncmp(name, "cert://", 7) != 0 && | |
494 | strncmp(name, "hash://", 7) != 0)) | |
495 | return -1; | |
496 | ||
497 | priv = os_zalloc(sizeof(*priv)); | |
498 | rsa_meth = os_zalloc(sizeof(*rsa_meth)); | |
499 | if (priv == NULL || rsa_meth == NULL) { | |
500 | wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory " | |
501 | "for CryptoAPI RSA method"); | |
502 | os_free(priv); | |
503 | os_free(rsa_meth); | |
504 | return -1; | |
505 | } | |
506 | ||
507 | priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER); | |
508 | if (priv->cert == NULL) { | |
509 | priv->cert = cryptoapi_find_cert( | |
510 | name, CERT_SYSTEM_STORE_LOCAL_MACHINE); | |
511 | } | |
512 | if (priv->cert == NULL) { | |
513 | wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate " | |
514 | "'%s'", name); | |
515 | goto err; | |
516 | } | |
517 | ||
fee31f76 JM |
518 | cert = d2i_X509(NULL, |
519 | (const unsigned char **) &priv->cert->pbCertEncoded, | |
6fc6879b JM |
520 | priv->cert->cbCertEncoded); |
521 | if (cert == NULL) { | |
522 | wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER " | |
523 | "encoding"); | |
524 | goto err; | |
525 | } | |
526 | ||
6fc6879b JM |
527 | if (!CryptAcquireCertificatePrivateKey(priv->cert, |
528 | CRYPT_ACQUIRE_COMPARE_KEY_FLAG, | |
529 | NULL, &priv->crypt_prov, | |
530 | &priv->key_spec, | |
531 | &priv->free_crypt_prov)) { | |
532 | cryptoapi_error("Failed to acquire a private key for the " | |
533 | "certificate"); | |
534 | goto err; | |
535 | } | |
536 | ||
537 | rsa_meth->name = "Microsoft CryptoAPI RSA Method"; | |
538 | rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc; | |
539 | rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec; | |
540 | rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc; | |
541 | rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec; | |
542 | rsa_meth->finish = cryptoapi_finish; | |
543 | rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK; | |
544 | rsa_meth->app_data = (char *) priv; | |
545 | ||
546 | rsa = RSA_new(); | |
547 | if (rsa == NULL) { | |
548 | SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE, | |
549 | ERR_R_MALLOC_FAILURE); | |
550 | goto err; | |
551 | } | |
552 | ||
553 | if (!SSL_use_certificate(ssl, cert)) { | |
554 | RSA_free(rsa); | |
555 | rsa = NULL; | |
556 | goto err; | |
557 | } | |
558 | pub_rsa = cert->cert_info->key->pkey->pkey.rsa; | |
559 | X509_free(cert); | |
560 | cert = NULL; | |
561 | ||
562 | rsa->n = BN_dup(pub_rsa->n); | |
563 | rsa->e = BN_dup(pub_rsa->e); | |
564 | if (!RSA_set_method(rsa, rsa_meth)) | |
565 | goto err; | |
566 | ||
567 | if (!SSL_use_RSAPrivateKey(ssl, rsa)) | |
568 | goto err; | |
569 | RSA_free(rsa); | |
570 | ||
571 | return 0; | |
572 | ||
573 | err: | |
574 | if (cert) | |
575 | X509_free(cert); | |
576 | if (rsa) | |
577 | RSA_free(rsa); | |
578 | else { | |
579 | os_free(rsa_meth); | |
580 | cryptoapi_free_data(priv); | |
581 | } | |
582 | return -1; | |
583 | } | |
584 | ||
585 | ||
586 | static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name) | |
587 | { | |
588 | HCERTSTORE cs; | |
589 | PCCERT_CONTEXT ctx = NULL; | |
590 | X509 *cert; | |
591 | char buf[128]; | |
592 | const char *store; | |
593 | #ifdef UNICODE | |
594 | WCHAR *wstore; | |
595 | #endif /* UNICODE */ | |
596 | ||
6fc6879b JM |
597 | if (name == NULL || strncmp(name, "cert_store://", 13) != 0) |
598 | return -1; | |
599 | ||
600 | store = name + 13; | |
601 | #ifdef UNICODE | |
602 | wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR)); | |
603 | if (wstore == NULL) | |
604 | return -1; | |
605 | wsprintf(wstore, L"%S", store); | |
606 | cs = CertOpenSystemStore(0, wstore); | |
607 | os_free(wstore); | |
608 | #else /* UNICODE */ | |
609 | cs = CertOpenSystemStore(0, store); | |
610 | #endif /* UNICODE */ | |
611 | if (cs == NULL) { | |
612 | wpa_printf(MSG_DEBUG, "%s: failed to open system cert store " | |
613 | "'%s': error=%d", __func__, store, | |
614 | (int) GetLastError()); | |
615 | return -1; | |
616 | } | |
617 | ||
618 | while ((ctx = CertEnumCertificatesInStore(cs, ctx))) { | |
fee31f76 JM |
619 | cert = d2i_X509(NULL, |
620 | (const unsigned char **) &ctx->pbCertEncoded, | |
6fc6879b JM |
621 | ctx->cbCertEncoded); |
622 | if (cert == NULL) { | |
623 | wpa_printf(MSG_INFO, "CryptoAPI: Could not process " | |
624 | "X509 DER encoding for CA cert"); | |
625 | continue; | |
626 | } | |
627 | ||
628 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
629 | sizeof(buf)); | |
630 | wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for " | |
631 | "system certificate store: subject='%s'", buf); | |
632 | ||
f150db6c DB |
633 | if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), |
634 | cert)) { | |
6fc6879b JM |
635 | tls_show_errors(MSG_WARNING, __func__, |
636 | "Failed to add ca_cert to OpenSSL " | |
637 | "certificate store"); | |
638 | } | |
639 | ||
640 | X509_free(cert); | |
641 | } | |
642 | ||
643 | if (!CertCloseStore(cs, 0)) { | |
644 | wpa_printf(MSG_DEBUG, "%s: failed to close system cert store " | |
645 | "'%s': error=%d", __func__, name + 13, | |
646 | (int) GetLastError()); | |
647 | } | |
648 | ||
649 | return 0; | |
650 | } | |
651 | ||
652 | ||
653 | #else /* CONFIG_NATIVE_WINDOWS */ | |
654 | ||
655 | static int tls_cryptoapi_cert(SSL *ssl, const char *name) | |
656 | { | |
657 | return -1; | |
658 | } | |
659 | ||
660 | #endif /* CONFIG_NATIVE_WINDOWS */ | |
661 | ||
662 | ||
663 | static void ssl_info_cb(const SSL *ssl, int where, int ret) | |
664 | { | |
665 | const char *str; | |
666 | int w; | |
667 | ||
668 | wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret); | |
669 | w = where & ~SSL_ST_MASK; | |
670 | if (w & SSL_ST_CONNECT) | |
671 | str = "SSL_connect"; | |
672 | else if (w & SSL_ST_ACCEPT) | |
673 | str = "SSL_accept"; | |
674 | else | |
675 | str = "undefined"; | |
676 | ||
677 | if (where & SSL_CB_LOOP) { | |
678 | wpa_printf(MSG_DEBUG, "SSL: %s:%s", | |
679 | str, SSL_state_string_long(ssl)); | |
680 | } else if (where & SSL_CB_ALERT) { | |
7c0e1e27 | 681 | struct tls_connection *conn = SSL_get_app_data((SSL *) ssl); |
6fc6879b JM |
682 | wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s", |
683 | where & SSL_CB_READ ? | |
684 | "read (remote end reported an error)" : | |
685 | "write (local SSL3 detected an error)", | |
686 | SSL_alert_type_string_long(ret), | |
687 | SSL_alert_desc_string_long(ret)); | |
688 | if ((ret >> 8) == SSL3_AL_FATAL) { | |
6fc6879b JM |
689 | if (where & SSL_CB_READ) |
690 | conn->read_alerts++; | |
691 | else | |
692 | conn->write_alerts++; | |
693 | } | |
7c0e1e27 | 694 | if (conn->context->event_cb != NULL) { |
dd7fec1f | 695 | union tls_event_data ev; |
7c0e1e27 | 696 | struct tls_context *context = conn->context; |
dd7fec1f PS |
697 | os_memset(&ev, 0, sizeof(ev)); |
698 | ev.alert.is_local = !(where & SSL_CB_READ); | |
699 | ev.alert.type = SSL_alert_type_string_long(ret); | |
700 | ev.alert.description = SSL_alert_desc_string_long(ret); | |
7c0e1e27 | 701 | context->event_cb(context->cb_ctx, TLS_ALERT, &ev); |
dd7fec1f | 702 | } |
6fc6879b JM |
703 | } else if (where & SSL_CB_EXIT && ret <= 0) { |
704 | wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s", | |
705 | str, ret == 0 ? "failed" : "error", | |
706 | SSL_state_string_long(ssl)); | |
707 | } | |
708 | } | |
709 | ||
710 | ||
711 | #ifndef OPENSSL_NO_ENGINE | |
712 | /** | |
713 | * tls_engine_load_dynamic_generic - load any openssl engine | |
714 | * @pre: an array of commands and values that load an engine initialized | |
715 | * in the engine specific function | |
716 | * @post: an array of commands and values that initialize an already loaded | |
717 | * engine (or %NULL if not required) | |
718 | * @id: the engine id of the engine to load (only required if post is not %NULL | |
719 | * | |
720 | * This function is a generic function that loads any openssl engine. | |
721 | * | |
722 | * Returns: 0 on success, -1 on failure | |
723 | */ | |
724 | static int tls_engine_load_dynamic_generic(const char *pre[], | |
725 | const char *post[], const char *id) | |
726 | { | |
727 | ENGINE *engine; | |
728 | const char *dynamic_id = "dynamic"; | |
729 | ||
730 | engine = ENGINE_by_id(id); | |
731 | if (engine) { | |
6fc6879b JM |
732 | wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already " |
733 | "available", id); | |
c3d7fb7e DW |
734 | /* |
735 | * If it was auto-loaded by ENGINE_by_id() we might still | |
736 | * need to tell it which PKCS#11 module to use in legacy | |
737 | * (non-p11-kit) environments. Do so now; even if it was | |
738 | * properly initialised before, setting it again will be | |
739 | * harmless. | |
740 | */ | |
741 | goto found; | |
6fc6879b JM |
742 | } |
743 | ERR_clear_error(); | |
744 | ||
745 | engine = ENGINE_by_id(dynamic_id); | |
746 | if (engine == NULL) { | |
747 | wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]", | |
748 | dynamic_id, | |
749 | ERR_error_string(ERR_get_error(), NULL)); | |
750 | return -1; | |
751 | } | |
752 | ||
753 | /* Perform the pre commands. This will load the engine. */ | |
754 | while (pre && pre[0]) { | |
755 | wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]); | |
756 | if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) { | |
757 | wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: " | |
758 | "%s %s [%s]", pre[0], pre[1], | |
759 | ERR_error_string(ERR_get_error(), NULL)); | |
760 | ENGINE_free(engine); | |
761 | return -1; | |
762 | } | |
763 | pre += 2; | |
764 | } | |
765 | ||
766 | /* | |
767 | * Free the reference to the "dynamic" engine. The loaded engine can | |
768 | * now be looked up using ENGINE_by_id(). | |
769 | */ | |
770 | ENGINE_free(engine); | |
771 | ||
772 | engine = ENGINE_by_id(id); | |
773 | if (engine == NULL) { | |
774 | wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]", | |
775 | id, ERR_error_string(ERR_get_error(), NULL)); | |
776 | return -1; | |
777 | } | |
c3d7fb7e | 778 | found: |
6fc6879b JM |
779 | while (post && post[0]) { |
780 | wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]); | |
781 | if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) { | |
782 | wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:" | |
783 | " %s %s [%s]", post[0], post[1], | |
784 | ERR_error_string(ERR_get_error(), NULL)); | |
785 | ENGINE_remove(engine); | |
786 | ENGINE_free(engine); | |
787 | return -1; | |
788 | } | |
789 | post += 2; | |
790 | } | |
791 | ENGINE_free(engine); | |
792 | ||
793 | return 0; | |
794 | } | |
795 | ||
796 | ||
797 | /** | |
798 | * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc | |
799 | * @pkcs11_so_path: pksc11_so_path from the configuration | |
800 | * @pcks11_module_path: pkcs11_module_path from the configuration | |
801 | */ | |
802 | static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path, | |
803 | const char *pkcs11_module_path) | |
804 | { | |
805 | char *engine_id = "pkcs11"; | |
806 | const char *pre_cmd[] = { | |
807 | "SO_PATH", NULL /* pkcs11_so_path */, | |
808 | "ID", NULL /* engine_id */, | |
809 | "LIST_ADD", "1", | |
810 | /* "NO_VCHECK", "1", */ | |
811 | "LOAD", NULL, | |
812 | NULL, NULL | |
813 | }; | |
814 | const char *post_cmd[] = { | |
815 | "MODULE_PATH", NULL /* pkcs11_module_path */, | |
816 | NULL, NULL | |
817 | }; | |
818 | ||
5c8ab0d4 | 819 | if (!pkcs11_so_path) |
6fc6879b JM |
820 | return 0; |
821 | ||
822 | pre_cmd[1] = pkcs11_so_path; | |
823 | pre_cmd[3] = engine_id; | |
5c8ab0d4 DW |
824 | if (pkcs11_module_path) |
825 | post_cmd[1] = pkcs11_module_path; | |
826 | else | |
827 | post_cmd[0] = NULL; | |
6fc6879b JM |
828 | |
829 | wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s", | |
830 | pkcs11_so_path); | |
831 | ||
832 | return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id); | |
833 | } | |
834 | ||
835 | ||
836 | /** | |
837 | * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc | |
838 | * @opensc_so_path: opensc_so_path from the configuration | |
839 | */ | |
840 | static int tls_engine_load_dynamic_opensc(const char *opensc_so_path) | |
841 | { | |
842 | char *engine_id = "opensc"; | |
843 | const char *pre_cmd[] = { | |
844 | "SO_PATH", NULL /* opensc_so_path */, | |
845 | "ID", NULL /* engine_id */, | |
846 | "LIST_ADD", "1", | |
847 | "LOAD", NULL, | |
848 | NULL, NULL | |
849 | }; | |
850 | ||
851 | if (!opensc_so_path) | |
852 | return 0; | |
853 | ||
854 | pre_cmd[1] = opensc_so_path; | |
855 | pre_cmd[3] = engine_id; | |
856 | ||
857 | wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s", | |
858 | opensc_so_path); | |
859 | ||
860 | return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id); | |
861 | } | |
862 | #endif /* OPENSSL_NO_ENGINE */ | |
863 | ||
864 | ||
acf36f31 JM |
865 | static void remove_session_cb(SSL_CTX *ctx, SSL_SESSION *sess) |
866 | { | |
867 | struct wpabuf *buf; | |
868 | ||
869 | if (tls_ex_idx_session < 0) | |
870 | return; | |
871 | buf = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
872 | if (!buf) | |
873 | return; | |
874 | wpa_printf(MSG_DEBUG, | |
875 | "OpenSSL: Free application session data %p (sess %p)", | |
876 | buf, sess); | |
877 | wpabuf_free(buf); | |
878 | ||
879 | SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, NULL); | |
880 | } | |
881 | ||
882 | ||
6fc6879b JM |
883 | void * tls_init(const struct tls_config *conf) |
884 | { | |
bd9b8b2b | 885 | struct tls_data *data; |
6fc6879b | 886 | SSL_CTX *ssl; |
7c0e1e27 | 887 | struct tls_context *context; |
b7328434 | 888 | const char *ciphers; |
6fc6879b JM |
889 | |
890 | if (tls_openssl_ref_count == 0) { | |
7c0e1e27 PS |
891 | tls_global = context = tls_context_new(conf); |
892 | if (context == NULL) | |
00468b46 | 893 | return NULL; |
76f04b38 JM |
894 | #ifdef CONFIG_FIPS |
895 | #ifdef OPENSSL_FIPS | |
cf123d7f | 896 | if (conf && conf->fips_mode) { |
4fc53159 JM |
897 | static int fips_enabled = 0; |
898 | ||
899 | if (!fips_enabled && !FIPS_mode_set(1)) { | |
76f04b38 JM |
900 | wpa_printf(MSG_ERROR, "Failed to enable FIPS " |
901 | "mode"); | |
902 | ERR_load_crypto_strings(); | |
903 | ERR_print_errors_fp(stderr); | |
b36540db JM |
904 | os_free(tls_global); |
905 | tls_global = NULL; | |
76f04b38 | 906 | return NULL; |
4fc53159 | 907 | } else { |
76f04b38 | 908 | wpa_printf(MSG_INFO, "Running in FIPS mode"); |
4fc53159 JM |
909 | fips_enabled = 1; |
910 | } | |
76f04b38 JM |
911 | } |
912 | #else /* OPENSSL_FIPS */ | |
cf123d7f | 913 | if (conf && conf->fips_mode) { |
76f04b38 JM |
914 | wpa_printf(MSG_ERROR, "FIPS mode requested, but not " |
915 | "supported"); | |
b36540db JM |
916 | os_free(tls_global); |
917 | tls_global = NULL; | |
76f04b38 JM |
918 | return NULL; |
919 | } | |
920 | #endif /* OPENSSL_FIPS */ | |
921 | #endif /* CONFIG_FIPS */ | |
df426738 | 922 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
6fc6879b JM |
923 | SSL_load_error_strings(); |
924 | SSL_library_init(); | |
fee31f76 | 925 | #ifndef OPENSSL_NO_SHA256 |
e1ffdfc1 JM |
926 | EVP_add_digest(EVP_sha256()); |
927 | #endif /* OPENSSL_NO_SHA256 */ | |
6fc6879b JM |
928 | /* TODO: if /dev/urandom is available, PRNG is seeded |
929 | * automatically. If this is not the case, random data should | |
930 | * be added here. */ | |
931 | ||
932 | #ifdef PKCS12_FUNCS | |
1056dad7 JM |
933 | #ifndef OPENSSL_NO_RC2 |
934 | /* | |
935 | * 40-bit RC2 is commonly used in PKCS#12 files, so enable it. | |
936 | * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8 | |
937 | * versions, but it looks like OpenSSL 1.0.0 does not do that | |
938 | * anymore. | |
939 | */ | |
940 | EVP_add_cipher(EVP_rc2_40_cbc()); | |
941 | #endif /* OPENSSL_NO_RC2 */ | |
6fc6879b JM |
942 | PKCS12_PBE_add(); |
943 | #endif /* PKCS12_FUNCS */ | |
29bc76e3 | 944 | #endif /* < 1.1.0 */ |
7c0e1e27 | 945 | } else { |
7c0e1e27 PS |
946 | context = tls_context_new(conf); |
947 | if (context == NULL) | |
948 | return NULL; | |
6fc6879b JM |
949 | } |
950 | tls_openssl_ref_count++; | |
951 | ||
bd9b8b2b JM |
952 | data = os_zalloc(sizeof(*data)); |
953 | if (data) | |
954 | ssl = SSL_CTX_new(SSLv23_method()); | |
955 | else | |
956 | ssl = NULL; | |
7c0e1e27 PS |
957 | if (ssl == NULL) { |
958 | tls_openssl_ref_count--; | |
a288da61 JM |
959 | if (context != tls_global) |
960 | os_free(context); | |
7c0e1e27 PS |
961 | if (tls_openssl_ref_count == 0) { |
962 | os_free(tls_global); | |
963 | tls_global = NULL; | |
7c0e1e27 | 964 | } |
1f1e599b | 965 | os_free(data); |
6fc6879b | 966 | return NULL; |
7c0e1e27 | 967 | } |
bd9b8b2b | 968 | data->ssl = ssl; |
acf36f31 JM |
969 | if (conf) |
970 | data->tls_session_lifetime = conf->tls_session_lifetime; | |
6fc6879b | 971 | |
35efa247 JM |
972 | SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv2); |
973 | SSL_CTX_set_options(ssl, SSL_OP_NO_SSLv3); | |
974 | ||
d7f12e4e JM |
975 | #ifdef SSL_MODE_NO_AUTO_CHAIN |
976 | /* Number of deployed use cases assume the default OpenSSL behavior of | |
977 | * auto chaining the local certificate is in use. BoringSSL removed this | |
978 | * functionality by default, so we need to restore it here to avoid | |
979 | * breaking existing use cases. */ | |
980 | SSL_CTX_clear_mode(ssl, SSL_MODE_NO_AUTO_CHAIN); | |
981 | #endif /* SSL_MODE_NO_AUTO_CHAIN */ | |
982 | ||
6fc6879b | 983 | SSL_CTX_set_info_callback(ssl, ssl_info_cb); |
7c0e1e27 | 984 | SSL_CTX_set_app_data(ssl, context); |
acf36f31 JM |
985 | if (data->tls_session_lifetime > 0) { |
986 | SSL_CTX_set_quiet_shutdown(ssl, 1); | |
987 | /* | |
988 | * Set default context here. In practice, this will be replaced | |
989 | * by the per-EAP method context in tls_connection_set_verify(). | |
990 | */ | |
991 | SSL_CTX_set_session_id_context(ssl, (u8 *) "hostapd", 7); | |
992 | SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_SERVER); | |
993 | SSL_CTX_set_timeout(ssl, data->tls_session_lifetime); | |
994 | SSL_CTX_sess_set_remove_cb(ssl, remove_session_cb); | |
995 | } else { | |
996 | SSL_CTX_set_session_cache_mode(ssl, SSL_SESS_CACHE_OFF); | |
997 | } | |
998 | ||
999 | if (tls_ex_idx_session < 0) { | |
1000 | tls_ex_idx_session = SSL_SESSION_get_ex_new_index( | |
1001 | 0, NULL, NULL, NULL, NULL); | |
1002 | if (tls_ex_idx_session < 0) { | |
1003 | tls_deinit(data); | |
1004 | return NULL; | |
1005 | } | |
1006 | } | |
6fc6879b JM |
1007 | |
1008 | #ifndef OPENSSL_NO_ENGINE | |
ddda6276 DW |
1009 | wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine"); |
1010 | ERR_load_ENGINE_strings(); | |
1011 | ENGINE_load_dynamic(); | |
1012 | ||
6fc6879b JM |
1013 | if (conf && |
1014 | (conf->opensc_engine_path || conf->pkcs11_engine_path || | |
1015 | conf->pkcs11_module_path)) { | |
6fc6879b JM |
1016 | if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) || |
1017 | tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path, | |
1018 | conf->pkcs11_module_path)) { | |
bd9b8b2b | 1019 | tls_deinit(data); |
6fc6879b JM |
1020 | return NULL; |
1021 | } | |
1022 | } | |
1023 | #endif /* OPENSSL_NO_ENGINE */ | |
1024 | ||
b7328434 JM |
1025 | if (conf && conf->openssl_ciphers) |
1026 | ciphers = conf->openssl_ciphers; | |
1027 | else | |
1028 | ciphers = "DEFAULT:!EXP:!LOW"; | |
1029 | if (SSL_CTX_set_cipher_list(ssl, ciphers) != 1) { | |
1030 | wpa_printf(MSG_ERROR, | |
1031 | "OpenSSL: Failed to set cipher string '%s'", | |
1032 | ciphers); | |
bd9b8b2b | 1033 | tls_deinit(data); |
b7328434 JM |
1034 | return NULL; |
1035 | } | |
1036 | ||
bd9b8b2b | 1037 | return data; |
6fc6879b JM |
1038 | } |
1039 | ||
1040 | ||
1041 | void tls_deinit(void *ssl_ctx) | |
1042 | { | |
bd9b8b2b JM |
1043 | struct tls_data *data = ssl_ctx; |
1044 | SSL_CTX *ssl = data->ssl; | |
7c0e1e27 PS |
1045 | struct tls_context *context = SSL_CTX_get_app_data(ssl); |
1046 | if (context != tls_global) | |
1047 | os_free(context); | |
acf36f31 JM |
1048 | if (data->tls_session_lifetime > 0) |
1049 | SSL_CTX_flush_sessions(ssl, 0); | |
6fc6879b JM |
1050 | SSL_CTX_free(ssl); |
1051 | ||
1052 | tls_openssl_ref_count--; | |
1053 | if (tls_openssl_ref_count == 0) { | |
df426738 | 1054 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
6fc6879b JM |
1055 | #ifndef OPENSSL_NO_ENGINE |
1056 | ENGINE_cleanup(); | |
1057 | #endif /* OPENSSL_NO_ENGINE */ | |
1058 | CRYPTO_cleanup_all_ex_data(); | |
a8572960 | 1059 | ERR_remove_thread_state(NULL); |
6fc6879b JM |
1060 | ERR_free_strings(); |
1061 | EVP_cleanup(); | |
29bc76e3 | 1062 | #endif /* < 1.1.0 */ |
080585c0 JM |
1063 | os_free(tls_global->ocsp_stapling_response); |
1064 | tls_global->ocsp_stapling_response = NULL; | |
00468b46 JM |
1065 | os_free(tls_global); |
1066 | tls_global = NULL; | |
6fc6879b | 1067 | } |
bd9b8b2b JM |
1068 | |
1069 | os_free(data); | |
6fc6879b JM |
1070 | } |
1071 | ||
1072 | ||
fd4fb281 MG |
1073 | #ifndef OPENSSL_NO_ENGINE |
1074 | ||
1075 | /* Cryptoki return values */ | |
1076 | #define CKR_PIN_INCORRECT 0x000000a0 | |
1077 | #define CKR_PIN_INVALID 0x000000a1 | |
1078 | #define CKR_PIN_LEN_RANGE 0x000000a2 | |
1079 | ||
1080 | /* libp11 */ | |
1081 | #define ERR_LIB_PKCS11 ERR_LIB_USER | |
1082 | ||
1083 | static int tls_is_pin_error(unsigned int err) | |
1084 | { | |
1085 | return ERR_GET_LIB(err) == ERR_LIB_PKCS11 && | |
1086 | (ERR_GET_REASON(err) == CKR_PIN_INCORRECT || | |
1087 | ERR_GET_REASON(err) == CKR_PIN_INVALID || | |
1088 | ERR_GET_REASON(err) == CKR_PIN_LEN_RANGE); | |
1089 | } | |
1090 | ||
1091 | #endif /* OPENSSL_NO_ENGINE */ | |
1092 | ||
1093 | ||
aeeb0bca AL |
1094 | #ifdef ANDROID |
1095 | /* EVP_PKEY_from_keystore comes from system/security/keystore-engine. */ | |
1096 | EVP_PKEY * EVP_PKEY_from_keystore(const char *key_id); | |
1097 | #endif /* ANDROID */ | |
1098 | ||
6fc6879b | 1099 | static int tls_engine_init(struct tls_connection *conn, const char *engine_id, |
e59c91af DS |
1100 | const char *pin, const char *key_id, |
1101 | const char *cert_id, const char *ca_cert_id) | |
6fc6879b | 1102 | { |
aeeb0bca AL |
1103 | #if defined(ANDROID) && defined(OPENSSL_IS_BORINGSSL) |
1104 | #if !defined(OPENSSL_NO_ENGINE) | |
1105 | #error "This code depends on OPENSSL_NO_ENGINE being defined by BoringSSL." | |
1106 | #endif | |
1107 | if (!key_id) | |
1108 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1109 | conn->engine = NULL; | |
1110 | conn->private_key = EVP_PKEY_from_keystore(key_id); | |
1111 | if (!conn->private_key) { | |
1112 | wpa_printf(MSG_ERROR, | |
1113 | "ENGINE: cannot load private key with id '%s' [%s]", | |
1114 | key_id, | |
1115 | ERR_error_string(ERR_get_error(), NULL)); | |
1116 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1117 | } | |
1118 | #endif /* ANDROID && OPENSSL_IS_BORINGSSL */ | |
1119 | ||
6fc6879b JM |
1120 | #ifndef OPENSSL_NO_ENGINE |
1121 | int ret = -1; | |
1122 | if (engine_id == NULL) { | |
1123 | wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set"); | |
1124 | return -1; | |
1125 | } | |
6fc6879b JM |
1126 | |
1127 | ERR_clear_error(); | |
1176ab6d KR |
1128 | #ifdef ANDROID |
1129 | ENGINE_load_dynamic(); | |
1130 | #endif | |
6fc6879b JM |
1131 | conn->engine = ENGINE_by_id(engine_id); |
1132 | if (!conn->engine) { | |
1133 | wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]", | |
1134 | engine_id, ERR_error_string(ERR_get_error(), NULL)); | |
1135 | goto err; | |
1136 | } | |
1137 | if (ENGINE_init(conn->engine) != 1) { | |
1138 | wpa_printf(MSG_ERROR, "ENGINE: engine init failed " | |
1139 | "(engine: %s) [%s]", engine_id, | |
1140 | ERR_error_string(ERR_get_error(), NULL)); | |
1141 | goto err; | |
1142 | } | |
1143 | wpa_printf(MSG_DEBUG, "ENGINE: engine initialized"); | |
1144 | ||
1176ab6d | 1145 | #ifndef ANDROID |
a642a52b | 1146 | if (pin && ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) { |
6fc6879b JM |
1147 | wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]", |
1148 | ERR_error_string(ERR_get_error(), NULL)); | |
1149 | goto err; | |
1150 | } | |
1176ab6d | 1151 | #endif |
3d268b8d | 1152 | if (key_id) { |
a642a52b DW |
1153 | /* |
1154 | * Ensure that the ENGINE does not attempt to use the OpenSSL | |
1155 | * UI system to obtain a PIN, if we didn't provide one. | |
1156 | */ | |
1157 | struct { | |
1158 | const void *password; | |
1159 | const char *prompt_info; | |
1160 | } key_cb = { "", NULL }; | |
1161 | ||
3d268b8d DW |
1162 | /* load private key first in-case PIN is required for cert */ |
1163 | conn->private_key = ENGINE_load_private_key(conn->engine, | |
a642a52b DW |
1164 | key_id, NULL, |
1165 | &key_cb); | |
3d268b8d | 1166 | if (!conn->private_key) { |
fd4fb281 MG |
1167 | unsigned long err = ERR_get_error(); |
1168 | ||
3d268b8d DW |
1169 | wpa_printf(MSG_ERROR, |
1170 | "ENGINE: cannot load private key with id '%s' [%s]", | |
1171 | key_id, | |
fd4fb281 MG |
1172 | ERR_error_string(err, NULL)); |
1173 | if (tls_is_pin_error(err)) | |
1174 | ret = TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN; | |
1175 | else | |
1176 | ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
3d268b8d DW |
1177 | goto err; |
1178 | } | |
6fc6879b | 1179 | } |
e59c91af DS |
1180 | |
1181 | /* handle a certificate and/or CA certificate */ | |
1182 | if (cert_id || ca_cert_id) { | |
1183 | const char *cmd_name = "LOAD_CERT_CTRL"; | |
1184 | ||
1185 | /* test if the engine supports a LOAD_CERT_CTRL */ | |
1186 | if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME, | |
1187 | 0, (void *)cmd_name, NULL)) { | |
1188 | wpa_printf(MSG_ERROR, "ENGINE: engine does not support" | |
1189 | " loading certificates"); | |
1190 | ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
1191 | goto err; | |
1192 | } | |
1193 | } | |
1194 | ||
6fc6879b JM |
1195 | return 0; |
1196 | ||
1197 | err: | |
1198 | if (conn->engine) { | |
1199 | ENGINE_free(conn->engine); | |
1200 | conn->engine = NULL; | |
1201 | } | |
1202 | ||
1203 | if (conn->private_key) { | |
1204 | EVP_PKEY_free(conn->private_key); | |
1205 | conn->private_key = NULL; | |
1206 | } | |
1207 | ||
1208 | return ret; | |
1209 | #else /* OPENSSL_NO_ENGINE */ | |
1210 | return 0; | |
1211 | #endif /* OPENSSL_NO_ENGINE */ | |
1212 | } | |
1213 | ||
1214 | ||
1215 | static void tls_engine_deinit(struct tls_connection *conn) | |
1216 | { | |
aeeb0bca | 1217 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
1218 | wpa_printf(MSG_DEBUG, "ENGINE: engine deinit"); |
1219 | if (conn->private_key) { | |
1220 | EVP_PKEY_free(conn->private_key); | |
1221 | conn->private_key = NULL; | |
1222 | } | |
1223 | if (conn->engine) { | |
aeeb0bca | 1224 | #if !defined(OPENSSL_IS_BORINGSSL) |
6fc6879b | 1225 | ENGINE_finish(conn->engine); |
aeeb0bca | 1226 | #endif /* !OPENSSL_IS_BORINGSSL */ |
6fc6879b JM |
1227 | conn->engine = NULL; |
1228 | } | |
aeeb0bca | 1229 | #endif /* ANDROID || !OPENSSL_NO_ENGINE */ |
6fc6879b JM |
1230 | } |
1231 | ||
1232 | ||
1233 | int tls_get_errors(void *ssl_ctx) | |
1234 | { | |
1235 | int count = 0; | |
1236 | unsigned long err; | |
1237 | ||
1238 | while ((err = ERR_get_error())) { | |
1239 | wpa_printf(MSG_INFO, "TLS - SSL error: %s", | |
1240 | ERR_error_string(err, NULL)); | |
1241 | count++; | |
1242 | } | |
1243 | ||
1244 | return count; | |
1245 | } | |
1246 | ||
bb52293e | 1247 | |
cbb15497 JM |
1248 | static const char * openssl_content_type(int content_type) |
1249 | { | |
1250 | switch (content_type) { | |
1251 | case 20: | |
1252 | return "change cipher spec"; | |
1253 | case 21: | |
1254 | return "alert"; | |
1255 | case 22: | |
1256 | return "handshake"; | |
1257 | case 23: | |
1258 | return "application data"; | |
1259 | case 24: | |
1260 | return "heartbeat"; | |
1261 | case 256: | |
1262 | return "TLS header info"; /* pseudo content type */ | |
1263 | default: | |
1264 | return "?"; | |
1265 | } | |
1266 | } | |
1267 | ||
1268 | ||
1269 | static const char * openssl_handshake_type(int content_type, const u8 *buf, | |
1270 | size_t len) | |
1271 | { | |
1272 | if (content_type != 22 || !buf || len == 0) | |
1273 | return ""; | |
1274 | switch (buf[0]) { | |
1275 | case 0: | |
1276 | return "hello request"; | |
1277 | case 1: | |
1278 | return "client hello"; | |
1279 | case 2: | |
1280 | return "server hello"; | |
1281 | case 4: | |
1282 | return "new session ticket"; | |
1283 | case 11: | |
1284 | return "certificate"; | |
1285 | case 12: | |
1286 | return "server key exchange"; | |
1287 | case 13: | |
1288 | return "certificate request"; | |
1289 | case 14: | |
1290 | return "server hello done"; | |
1291 | case 15: | |
1292 | return "certificate verify"; | |
1293 | case 16: | |
1294 | return "client key exchange"; | |
1295 | case 20: | |
1296 | return "finished"; | |
1297 | case 21: | |
1298 | return "certificate url"; | |
1299 | case 22: | |
1300 | return "certificate status"; | |
1301 | default: | |
1302 | return "?"; | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | ||
bb52293e JM |
1307 | static void tls_msg_cb(int write_p, int version, int content_type, |
1308 | const void *buf, size_t len, SSL *ssl, void *arg) | |
1309 | { | |
1310 | struct tls_connection *conn = arg; | |
1311 | const u8 *pos = buf; | |
1312 | ||
faf8f293 JM |
1313 | if (write_p == 2) { |
1314 | wpa_printf(MSG_DEBUG, | |
1315 | "OpenSSL: session ver=0x%x content_type=%d", | |
1316 | version, content_type); | |
1317 | wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Data", buf, len); | |
1318 | return; | |
1319 | } | |
1320 | ||
cbb15497 JM |
1321 | wpa_printf(MSG_DEBUG, "OpenSSL: %s ver=0x%x content_type=%d (%s/%s)", |
1322 | write_p ? "TX" : "RX", version, content_type, | |
1323 | openssl_content_type(content_type), | |
1324 | openssl_handshake_type(content_type, buf, len)); | |
bb52293e JM |
1325 | wpa_hexdump_key(MSG_MSGDUMP, "OpenSSL: Message", buf, len); |
1326 | if (content_type == 24 && len >= 3 && pos[0] == 1) { | |
1327 | size_t payload_len = WPA_GET_BE16(pos + 1); | |
1328 | if (payload_len + 3 > len) { | |
1329 | wpa_printf(MSG_ERROR, "OpenSSL: Heartbeat attack detected"); | |
1330 | conn->invalid_hb_used = 1; | |
1331 | } | |
1332 | } | |
1333 | } | |
1334 | ||
1335 | ||
6a31a31d | 1336 | struct tls_connection * tls_connection_init(void *ssl_ctx) |
6fc6879b | 1337 | { |
bd9b8b2b JM |
1338 | struct tls_data *data = ssl_ctx; |
1339 | SSL_CTX *ssl = data->ssl; | |
6a31a31d | 1340 | struct tls_connection *conn; |
fca25ef4 | 1341 | long options; |
6a31a31d | 1342 | struct tls_context *context = SSL_CTX_get_app_data(ssl); |
6fc6879b | 1343 | |
6a31a31d JM |
1344 | conn = os_zalloc(sizeof(*conn)); |
1345 | if (conn == NULL) | |
1346 | return NULL; | |
bd9b8b2b | 1347 | conn->ssl_ctx = ssl; |
6a31a31d JM |
1348 | conn->ssl = SSL_new(ssl); |
1349 | if (conn->ssl == NULL) { | |
6fc6879b JM |
1350 | tls_show_errors(MSG_INFO, __func__, |
1351 | "Failed to initialize new SSL connection"); | |
6a31a31d JM |
1352 | os_free(conn); |
1353 | return NULL; | |
6fc6879b JM |
1354 | } |
1355 | ||
6a31a31d JM |
1356 | conn->context = context; |
1357 | SSL_set_app_data(conn->ssl, conn); | |
1358 | SSL_set_msg_callback(conn->ssl, tls_msg_cb); | |
1359 | SSL_set_msg_callback_arg(conn->ssl, conn); | |
fca25ef4 JM |
1360 | options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 | |
1361 | SSL_OP_SINGLE_DH_USE; | |
1362 | #ifdef SSL_OP_NO_COMPRESSION | |
1363 | options |= SSL_OP_NO_COMPRESSION; | |
1364 | #endif /* SSL_OP_NO_COMPRESSION */ | |
6a31a31d | 1365 | SSL_set_options(conn->ssl, options); |
6fc6879b | 1366 | |
6a31a31d JM |
1367 | conn->ssl_in = BIO_new(BIO_s_mem()); |
1368 | if (!conn->ssl_in) { | |
6fc6879b JM |
1369 | tls_show_errors(MSG_INFO, __func__, |
1370 | "Failed to create a new BIO for ssl_in"); | |
6a31a31d JM |
1371 | SSL_free(conn->ssl); |
1372 | os_free(conn); | |
1373 | return NULL; | |
6fc6879b JM |
1374 | } |
1375 | ||
6a31a31d JM |
1376 | conn->ssl_out = BIO_new(BIO_s_mem()); |
1377 | if (!conn->ssl_out) { | |
6fc6879b JM |
1378 | tls_show_errors(MSG_INFO, __func__, |
1379 | "Failed to create a new BIO for ssl_out"); | |
1380 | SSL_free(conn->ssl); | |
6a31a31d | 1381 | BIO_free(conn->ssl_in); |
6fc6879b JM |
1382 | os_free(conn); |
1383 | return NULL; | |
1384 | } | |
1385 | ||
6a31a31d JM |
1386 | SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out); |
1387 | ||
6fc6879b JM |
1388 | return conn; |
1389 | } | |
1390 | ||
1391 | ||
1392 | void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn) | |
1393 | { | |
1394 | if (conn == NULL) | |
1395 | return; | |
acf36f31 JM |
1396 | if (conn->success_data) { |
1397 | /* | |
1398 | * Make sure ssl_clear_bad_session() does not remove this | |
1399 | * session. | |
1400 | */ | |
1401 | SSL_set_quiet_shutdown(conn->ssl, 1); | |
1402 | SSL_shutdown(conn->ssl); | |
1403 | } | |
6fc6879b JM |
1404 | SSL_free(conn->ssl); |
1405 | tls_engine_deinit(conn); | |
1406 | os_free(conn->subject_match); | |
1407 | os_free(conn->altsubject_match); | |
01f809c7 | 1408 | os_free(conn->suffix_match); |
cebee30f | 1409 | os_free(conn->domain_match); |
6fc6879b JM |
1410 | os_free(conn->session_ticket); |
1411 | os_free(conn); | |
1412 | } | |
1413 | ||
1414 | ||
1415 | int tls_connection_established(void *ssl_ctx, struct tls_connection *conn) | |
1416 | { | |
1417 | return conn ? SSL_is_init_finished(conn->ssl) : 0; | |
1418 | } | |
1419 | ||
1420 | ||
1421 | int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn) | |
1422 | { | |
1423 | if (conn == NULL) | |
1424 | return -1; | |
1425 | ||
1426 | /* Shutdown previous TLS connection without notifying the peer | |
1427 | * because the connection was already terminated in practice | |
1428 | * and "close notify" shutdown alert would confuse AS. */ | |
1429 | SSL_set_quiet_shutdown(conn->ssl, 1); | |
1430 | SSL_shutdown(conn->ssl); | |
a7803b0c | 1431 | return SSL_clear(conn->ssl) == 1 ? 0 : -1; |
6fc6879b JM |
1432 | } |
1433 | ||
1434 | ||
1435 | static int tls_match_altsubject_component(X509 *cert, int type, | |
1436 | const char *value, size_t len) | |
1437 | { | |
1438 | GENERAL_NAME *gen; | |
1439 | void *ext; | |
a8572960 AL |
1440 | int found = 0; |
1441 | stack_index_t i; | |
6fc6879b JM |
1442 | |
1443 | ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL); | |
1444 | ||
1445 | for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) { | |
1446 | gen = sk_GENERAL_NAME_value(ext, i); | |
1447 | if (gen->type != type) | |
1448 | continue; | |
1449 | if (os_strlen((char *) gen->d.ia5->data) == len && | |
1450 | os_memcmp(value, gen->d.ia5->data, len) == 0) | |
1451 | found++; | |
1452 | } | |
1453 | ||
0f096370 JM |
1454 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
1455 | ||
6fc6879b JM |
1456 | return found; |
1457 | } | |
1458 | ||
1459 | ||
1460 | static int tls_match_altsubject(X509 *cert, const char *match) | |
1461 | { | |
1462 | int type; | |
1463 | const char *pos, *end; | |
1464 | size_t len; | |
1465 | ||
1466 | pos = match; | |
1467 | do { | |
1468 | if (os_strncmp(pos, "EMAIL:", 6) == 0) { | |
1469 | type = GEN_EMAIL; | |
1470 | pos += 6; | |
1471 | } else if (os_strncmp(pos, "DNS:", 4) == 0) { | |
1472 | type = GEN_DNS; | |
1473 | pos += 4; | |
1474 | } else if (os_strncmp(pos, "URI:", 4) == 0) { | |
1475 | type = GEN_URI; | |
1476 | pos += 4; | |
1477 | } else { | |
1478 | wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName " | |
1479 | "match '%s'", pos); | |
1480 | return 0; | |
1481 | } | |
1482 | end = os_strchr(pos, ';'); | |
1483 | while (end) { | |
1484 | if (os_strncmp(end + 1, "EMAIL:", 6) == 0 || | |
1485 | os_strncmp(end + 1, "DNS:", 4) == 0 || | |
1486 | os_strncmp(end + 1, "URI:", 4) == 0) | |
1487 | break; | |
1488 | end = os_strchr(end + 1, ';'); | |
1489 | } | |
1490 | if (end) | |
1491 | len = end - pos; | |
1492 | else | |
1493 | len = os_strlen(pos); | |
1494 | if (tls_match_altsubject_component(cert, type, pos, len) > 0) | |
1495 | return 1; | |
1496 | pos = end + 1; | |
1497 | } while (end); | |
1498 | ||
1499 | return 0; | |
1500 | } | |
1501 | ||
1502 | ||
461e3ebe | 1503 | #ifndef CONFIG_NATIVE_WINDOWS |
cebee30f JM |
1504 | static int domain_suffix_match(const u8 *val, size_t len, const char *match, |
1505 | int full) | |
01f809c7 JM |
1506 | { |
1507 | size_t i, match_len; | |
1508 | ||
1509 | /* Check for embedded nuls that could mess up suffix matching */ | |
1510 | for (i = 0; i < len; i++) { | |
1511 | if (val[i] == '\0') { | |
1512 | wpa_printf(MSG_DEBUG, "TLS: Embedded null in a string - reject"); | |
1513 | return 0; | |
1514 | } | |
1515 | } | |
1516 | ||
1517 | match_len = os_strlen(match); | |
cebee30f | 1518 | if (match_len > len || (full && match_len != len)) |
01f809c7 JM |
1519 | return 0; |
1520 | ||
1521 | if (os_strncasecmp((const char *) val + len - match_len, match, | |
1522 | match_len) != 0) | |
1523 | return 0; /* no match */ | |
1524 | ||
1525 | if (match_len == len) | |
1526 | return 1; /* exact match */ | |
1527 | ||
1528 | if (val[len - match_len - 1] == '.') | |
1529 | return 1; /* full label match completes suffix match */ | |
1530 | ||
1531 | wpa_printf(MSG_DEBUG, "TLS: Reject due to incomplete label match"); | |
1532 | return 0; | |
1533 | } | |
461e3ebe | 1534 | #endif /* CONFIG_NATIVE_WINDOWS */ |
01f809c7 JM |
1535 | |
1536 | ||
cebee30f | 1537 | static int tls_match_suffix(X509 *cert, const char *match, int full) |
01f809c7 | 1538 | { |
461e3ebe JM |
1539 | #ifdef CONFIG_NATIVE_WINDOWS |
1540 | /* wincrypt.h has conflicting X509_NAME definition */ | |
1541 | return -1; | |
1542 | #else /* CONFIG_NATIVE_WINDOWS */ | |
01f809c7 JM |
1543 | GENERAL_NAME *gen; |
1544 | void *ext; | |
1545 | int i; | |
98a1571d | 1546 | stack_index_t j; |
01f809c7 JM |
1547 | int dns_name = 0; |
1548 | X509_NAME *name; | |
1549 | ||
cebee30f JM |
1550 | wpa_printf(MSG_DEBUG, "TLS: Match domain against %s%s", |
1551 | full ? "": "suffix ", match); | |
01f809c7 JM |
1552 | |
1553 | ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL); | |
1554 | ||
98a1571d JM |
1555 | for (j = 0; ext && j < sk_GENERAL_NAME_num(ext); j++) { |
1556 | gen = sk_GENERAL_NAME_value(ext, j); | |
01f809c7 JM |
1557 | if (gen->type != GEN_DNS) |
1558 | continue; | |
1559 | dns_name++; | |
1560 | wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate dNSName", | |
1561 | gen->d.dNSName->data, | |
1562 | gen->d.dNSName->length); | |
1563 | if (domain_suffix_match(gen->d.dNSName->data, | |
cebee30f JM |
1564 | gen->d.dNSName->length, match, full) == |
1565 | 1) { | |
1566 | wpa_printf(MSG_DEBUG, "TLS: %s in dNSName found", | |
1567 | full ? "Match" : "Suffix match"); | |
0f096370 | 1568 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
01f809c7 JM |
1569 | return 1; |
1570 | } | |
1571 | } | |
0f096370 | 1572 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
01f809c7 JM |
1573 | |
1574 | if (dns_name) { | |
1575 | wpa_printf(MSG_DEBUG, "TLS: None of the dNSName(s) matched"); | |
1576 | return 0; | |
1577 | } | |
1578 | ||
1579 | name = X509_get_subject_name(cert); | |
1580 | i = -1; | |
1581 | for (;;) { | |
1582 | X509_NAME_ENTRY *e; | |
1583 | ASN1_STRING *cn; | |
1584 | ||
1585 | i = X509_NAME_get_index_by_NID(name, NID_commonName, i); | |
1586 | if (i == -1) | |
1587 | break; | |
1588 | e = X509_NAME_get_entry(name, i); | |
1589 | if (e == NULL) | |
1590 | continue; | |
1591 | cn = X509_NAME_ENTRY_get_data(e); | |
1592 | if (cn == NULL) | |
1593 | continue; | |
1594 | wpa_hexdump_ascii(MSG_DEBUG, "TLS: Certificate commonName", | |
1595 | cn->data, cn->length); | |
cebee30f JM |
1596 | if (domain_suffix_match(cn->data, cn->length, match, full) == 1) |
1597 | { | |
1598 | wpa_printf(MSG_DEBUG, "TLS: %s in commonName found", | |
1599 | full ? "Match" : "Suffix match"); | |
01f809c7 JM |
1600 | return 1; |
1601 | } | |
1602 | } | |
1603 | ||
cebee30f JM |
1604 | wpa_printf(MSG_DEBUG, "TLS: No CommonName %smatch found", |
1605 | full ? "": "suffix "); | |
01f809c7 | 1606 | return 0; |
461e3ebe | 1607 | #endif /* CONFIG_NATIVE_WINDOWS */ |
01f809c7 JM |
1608 | } |
1609 | ||
1610 | ||
00468b46 JM |
1611 | static enum tls_fail_reason openssl_tls_fail_reason(int err) |
1612 | { | |
1613 | switch (err) { | |
1614 | case X509_V_ERR_CERT_REVOKED: | |
1615 | return TLS_FAIL_REVOKED; | |
1616 | case X509_V_ERR_CERT_NOT_YET_VALID: | |
1617 | case X509_V_ERR_CRL_NOT_YET_VALID: | |
1618 | return TLS_FAIL_NOT_YET_VALID; | |
1619 | case X509_V_ERR_CERT_HAS_EXPIRED: | |
1620 | case X509_V_ERR_CRL_HAS_EXPIRED: | |
1621 | return TLS_FAIL_EXPIRED; | |
1622 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT: | |
1623 | case X509_V_ERR_UNABLE_TO_GET_CRL: | |
1624 | case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER: | |
1625 | case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN: | |
1626 | case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY: | |
1627 | case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT: | |
1628 | case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE: | |
1629 | case X509_V_ERR_CERT_CHAIN_TOO_LONG: | |
1630 | case X509_V_ERR_PATH_LENGTH_EXCEEDED: | |
1631 | case X509_V_ERR_INVALID_CA: | |
1632 | return TLS_FAIL_UNTRUSTED; | |
1633 | case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE: | |
1634 | case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE: | |
1635 | case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY: | |
1636 | case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD: | |
1637 | case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD: | |
1638 | case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD: | |
1639 | case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD: | |
1640 | case X509_V_ERR_CERT_UNTRUSTED: | |
1641 | case X509_V_ERR_CERT_REJECTED: | |
1642 | return TLS_FAIL_BAD_CERTIFICATE; | |
1643 | default: | |
1644 | return TLS_FAIL_UNSPECIFIED; | |
1645 | } | |
1646 | } | |
1647 | ||
1648 | ||
1649 | static struct wpabuf * get_x509_cert(X509 *cert) | |
1650 | { | |
1651 | struct wpabuf *buf; | |
1652 | u8 *tmp; | |
1653 | ||
1654 | int cert_len = i2d_X509(cert, NULL); | |
1655 | if (cert_len <= 0) | |
1656 | return NULL; | |
1657 | ||
1658 | buf = wpabuf_alloc(cert_len); | |
1659 | if (buf == NULL) | |
1660 | return NULL; | |
1661 | ||
1662 | tmp = wpabuf_put(buf, cert_len); | |
1663 | i2d_X509(cert, &tmp); | |
1664 | return buf; | |
1665 | } | |
1666 | ||
1667 | ||
1668 | static void openssl_tls_fail_event(struct tls_connection *conn, | |
1669 | X509 *err_cert, int err, int depth, | |
1670 | const char *subject, const char *err_str, | |
1671 | enum tls_fail_reason reason) | |
1672 | { | |
1673 | union tls_event_data ev; | |
1674 | struct wpabuf *cert = NULL; | |
7c0e1e27 | 1675 | struct tls_context *context = conn->context; |
00468b46 | 1676 | |
7c0e1e27 | 1677 | if (context->event_cb == NULL) |
00468b46 JM |
1678 | return; |
1679 | ||
1680 | cert = get_x509_cert(err_cert); | |
1681 | os_memset(&ev, 0, sizeof(ev)); | |
1682 | ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ? | |
1683 | reason : openssl_tls_fail_reason(err); | |
1684 | ev.cert_fail.depth = depth; | |
1685 | ev.cert_fail.subject = subject; | |
1686 | ev.cert_fail.reason_txt = err_str; | |
1687 | ev.cert_fail.cert = cert; | |
7c0e1e27 | 1688 | context->event_cb(context->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev); |
00468b46 JM |
1689 | wpabuf_free(cert); |
1690 | } | |
1691 | ||
1692 | ||
1693 | static void openssl_tls_cert_event(struct tls_connection *conn, | |
1694 | X509 *err_cert, int depth, | |
1695 | const char *subject) | |
1696 | { | |
1697 | struct wpabuf *cert = NULL; | |
1698 | union tls_event_data ev; | |
7c0e1e27 | 1699 | struct tls_context *context = conn->context; |
d07d3fbd JM |
1700 | char *altsubject[TLS_MAX_ALT_SUBJECT]; |
1701 | int alt, num_altsubject = 0; | |
1702 | GENERAL_NAME *gen; | |
1703 | void *ext; | |
1704 | stack_index_t i; | |
00468b46 JM |
1705 | #ifdef CONFIG_SHA256 |
1706 | u8 hash[32]; | |
1707 | #endif /* CONFIG_SHA256 */ | |
1708 | ||
7c0e1e27 | 1709 | if (context->event_cb == NULL) |
00468b46 JM |
1710 | return; |
1711 | ||
1712 | os_memset(&ev, 0, sizeof(ev)); | |
3c108b75 JM |
1713 | if (conn->cert_probe || (conn->flags & TLS_CONN_EXT_CERT_CHECK) || |
1714 | context->cert_in_cb) { | |
00468b46 JM |
1715 | cert = get_x509_cert(err_cert); |
1716 | ev.peer_cert.cert = cert; | |
1717 | } | |
1718 | #ifdef CONFIG_SHA256 | |
1719 | if (cert) { | |
1720 | const u8 *addr[1]; | |
1721 | size_t len[1]; | |
1722 | addr[0] = wpabuf_head(cert); | |
1723 | len[0] = wpabuf_len(cert); | |
1724 | if (sha256_vector(1, addr, len, hash) == 0) { | |
1725 | ev.peer_cert.hash = hash; | |
1726 | ev.peer_cert.hash_len = sizeof(hash); | |
1727 | } | |
1728 | } | |
1729 | #endif /* CONFIG_SHA256 */ | |
1730 | ev.peer_cert.depth = depth; | |
1731 | ev.peer_cert.subject = subject; | |
d07d3fbd JM |
1732 | |
1733 | ext = X509_get_ext_d2i(err_cert, NID_subject_alt_name, NULL, NULL); | |
1734 | for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) { | |
1735 | char *pos; | |
1736 | ||
1737 | if (num_altsubject == TLS_MAX_ALT_SUBJECT) | |
1738 | break; | |
1739 | gen = sk_GENERAL_NAME_value(ext, i); | |
1740 | if (gen->type != GEN_EMAIL && | |
1741 | gen->type != GEN_DNS && | |
1742 | gen->type != GEN_URI) | |
1743 | continue; | |
1744 | ||
1745 | pos = os_malloc(10 + gen->d.ia5->length + 1); | |
1746 | if (pos == NULL) | |
1747 | break; | |
1748 | altsubject[num_altsubject++] = pos; | |
1749 | ||
1750 | switch (gen->type) { | |
1751 | case GEN_EMAIL: | |
1752 | os_memcpy(pos, "EMAIL:", 6); | |
1753 | pos += 6; | |
1754 | break; | |
1755 | case GEN_DNS: | |
1756 | os_memcpy(pos, "DNS:", 4); | |
1757 | pos += 4; | |
1758 | break; | |
1759 | case GEN_URI: | |
1760 | os_memcpy(pos, "URI:", 4); | |
1761 | pos += 4; | |
1762 | break; | |
1763 | } | |
1764 | ||
1765 | os_memcpy(pos, gen->d.ia5->data, gen->d.ia5->length); | |
1766 | pos += gen->d.ia5->length; | |
1767 | *pos = '\0'; | |
1768 | } | |
0f096370 | 1769 | sk_GENERAL_NAME_pop_free(ext, GENERAL_NAME_free); |
d07d3fbd JM |
1770 | |
1771 | for (alt = 0; alt < num_altsubject; alt++) | |
1772 | ev.peer_cert.altsubject[alt] = altsubject[alt]; | |
1773 | ev.peer_cert.num_altsubject = num_altsubject; | |
1774 | ||
7c0e1e27 | 1775 | context->event_cb(context->cb_ctx, TLS_PEER_CERTIFICATE, &ev); |
00468b46 | 1776 | wpabuf_free(cert); |
d07d3fbd JM |
1777 | for (alt = 0; alt < num_altsubject; alt++) |
1778 | os_free(altsubject[alt]); | |
00468b46 JM |
1779 | } |
1780 | ||
1781 | ||
6fc6879b JM |
1782 | static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx) |
1783 | { | |
1784 | char buf[256]; | |
1785 | X509 *err_cert; | |
1786 | int err, depth; | |
1787 | SSL *ssl; | |
1788 | struct tls_connection *conn; | |
7c0e1e27 | 1789 | struct tls_context *context; |
cebee30f | 1790 | char *match, *altmatch, *suffix_match, *domain_match; |
00468b46 | 1791 | const char *err_str; |
6fc6879b JM |
1792 | |
1793 | err_cert = X509_STORE_CTX_get_current_cert(x509_ctx); | |
97efe70b EL |
1794 | if (!err_cert) |
1795 | return 0; | |
1796 | ||
6fc6879b JM |
1797 | err = X509_STORE_CTX_get_error(x509_ctx); |
1798 | depth = X509_STORE_CTX_get_error_depth(x509_ctx); | |
1799 | ssl = X509_STORE_CTX_get_ex_data(x509_ctx, | |
1800 | SSL_get_ex_data_X509_STORE_CTX_idx()); | |
1801 | X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf)); | |
1802 | ||
1803 | conn = SSL_get_app_data(ssl); | |
0bdaa741 JM |
1804 | if (conn == NULL) |
1805 | return 0; | |
080585c0 JM |
1806 | |
1807 | if (depth == 0) | |
1808 | conn->peer_cert = err_cert; | |
1809 | else if (depth == 1) | |
1810 | conn->peer_issuer = err_cert; | |
6bf61fb2 JM |
1811 | else if (depth == 2) |
1812 | conn->peer_issuer_issuer = err_cert; | |
080585c0 | 1813 | |
7c0e1e27 | 1814 | context = conn->context; |
0bdaa741 JM |
1815 | match = conn->subject_match; |
1816 | altmatch = conn->altsubject_match; | |
01f809c7 | 1817 | suffix_match = conn->suffix_match; |
cebee30f | 1818 | domain_match = conn->domain_match; |
6fc6879b | 1819 | |
00468b46 JM |
1820 | if (!preverify_ok && !conn->ca_cert_verify) |
1821 | preverify_ok = 1; | |
1822 | if (!preverify_ok && depth > 0 && conn->server_cert_only) | |
1823 | preverify_ok = 1; | |
235279e7 JM |
1824 | if (!preverify_ok && (conn->flags & TLS_CONN_DISABLE_TIME_CHECKS) && |
1825 | (err == X509_V_ERR_CERT_HAS_EXPIRED || | |
1826 | err == X509_V_ERR_CERT_NOT_YET_VALID)) { | |
1827 | wpa_printf(MSG_DEBUG, "OpenSSL: Ignore certificate validity " | |
1828 | "time mismatch"); | |
1829 | preverify_ok = 1; | |
1830 | } | |
00468b46 JM |
1831 | |
1832 | err_str = X509_verify_cert_error_string(err); | |
1833 | ||
1834 | #ifdef CONFIG_SHA256 | |
00033a09 RA |
1835 | /* |
1836 | * Do not require preverify_ok so we can explicity allow otherwise | |
1837 | * invalid pinned server certificates. | |
1838 | */ | |
1839 | if (depth == 0 && conn->server_cert_only) { | |
00468b46 JM |
1840 | struct wpabuf *cert; |
1841 | cert = get_x509_cert(err_cert); | |
1842 | if (!cert) { | |
1843 | wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch " | |
1844 | "server certificate data"); | |
6fc6879b | 1845 | preverify_ok = 0; |
00468b46 JM |
1846 | } else { |
1847 | u8 hash[32]; | |
1848 | const u8 *addr[1]; | |
1849 | size_t len[1]; | |
1850 | addr[0] = wpabuf_head(cert); | |
1851 | len[0] = wpabuf_len(cert); | |
1852 | if (sha256_vector(1, addr, len, hash) < 0 || | |
1853 | os_memcmp(conn->srv_cert_hash, hash, 32) != 0) { | |
1854 | err_str = "Server certificate mismatch"; | |
1855 | err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN; | |
1856 | preverify_ok = 0; | |
00033a09 RA |
1857 | } else if (!preverify_ok) { |
1858 | /* | |
1859 | * Certificate matches pinned certificate, allow | |
1860 | * regardless of other problems. | |
1861 | */ | |
1862 | wpa_printf(MSG_DEBUG, | |
1863 | "OpenSSL: Ignore validation issues for a pinned server certificate"); | |
1864 | preverify_ok = 1; | |
00468b46 JM |
1865 | } |
1866 | wpabuf_free(cert); | |
6fc6879b JM |
1867 | } |
1868 | } | |
00468b46 JM |
1869 | #endif /* CONFIG_SHA256 */ |
1870 | ||
1871 | if (!preverify_ok) { | |
1872 | wpa_printf(MSG_WARNING, "TLS: Certificate verification failed," | |
1873 | " error %d (%s) depth %d for '%s'", err, err_str, | |
1874 | depth, buf); | |
1875 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1876 | err_str, TLS_FAIL_UNSPECIFIED); | |
1877 | return preverify_ok; | |
1878 | } | |
1879 | ||
1880 | wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d " | |
1881 | "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'", | |
1882 | preverify_ok, err, err_str, | |
1883 | conn->ca_cert_verify, depth, buf); | |
1884 | if (depth == 0 && match && os_strstr(buf, match) == NULL) { | |
1885 | wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not " | |
1886 | "match with '%s'", buf, match); | |
1887 | preverify_ok = 0; | |
1888 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1889 | "Subject mismatch", | |
1890 | TLS_FAIL_SUBJECT_MISMATCH); | |
1891 | } else if (depth == 0 && altmatch && | |
1892 | !tls_match_altsubject(err_cert, altmatch)) { | |
1893 | wpa_printf(MSG_WARNING, "TLS: altSubjectName match " | |
1894 | "'%s' not found", altmatch); | |
1895 | preverify_ok = 0; | |
1896 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1897 | "AltSubject mismatch", | |
1898 | TLS_FAIL_ALTSUBJECT_MISMATCH); | |
01f809c7 | 1899 | } else if (depth == 0 && suffix_match && |
cebee30f | 1900 | !tls_match_suffix(err_cert, suffix_match, 0)) { |
01f809c7 JM |
1901 | wpa_printf(MSG_WARNING, "TLS: Domain suffix match '%s' not found", |
1902 | suffix_match); | |
1903 | preverify_ok = 0; | |
1904 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1905 | "Domain suffix mismatch", | |
1906 | TLS_FAIL_DOMAIN_SUFFIX_MISMATCH); | |
cebee30f JM |
1907 | } else if (depth == 0 && domain_match && |
1908 | !tls_match_suffix(err_cert, domain_match, 1)) { | |
1909 | wpa_printf(MSG_WARNING, "TLS: Domain match '%s' not found", | |
1910 | domain_match); | |
1911 | preverify_ok = 0; | |
1912 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1913 | "Domain mismatch", | |
1914 | TLS_FAIL_DOMAIN_MISMATCH); | |
00468b46 JM |
1915 | } else |
1916 | openssl_tls_cert_event(conn, err_cert, depth, buf); | |
1917 | ||
1918 | if (conn->cert_probe && preverify_ok && depth == 0) { | |
1919 | wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate " | |
1920 | "on probe-only run"); | |
1921 | preverify_ok = 0; | |
1922 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1923 | "Server certificate chain probe", | |
1924 | TLS_FAIL_SERVER_CHAIN_PROBE); | |
1925 | } | |
6fc6879b | 1926 | |
bdee6ca0 | 1927 | #ifdef OPENSSL_IS_BORINGSSL |
213e158c JM |
1928 | if (depth == 0 && (conn->flags & TLS_CONN_REQUEST_OCSP) && |
1929 | preverify_ok) { | |
bdee6ca0 JM |
1930 | enum ocsp_result res; |
1931 | ||
213e158c JM |
1932 | res = check_ocsp_resp(conn->ssl_ctx, conn->ssl, err_cert, |
1933 | conn->peer_issuer, | |
1934 | conn->peer_issuer_issuer); | |
bdee6ca0 JM |
1935 | if (res == OCSP_REVOKED) { |
1936 | preverify_ok = 0; | |
1937 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1938 | "certificate revoked", | |
1939 | TLS_FAIL_REVOKED); | |
1940 | if (err == X509_V_OK) | |
1941 | X509_STORE_CTX_set_error( | |
1942 | x509_ctx, X509_V_ERR_CERT_REVOKED); | |
1943 | } else if (res != OCSP_GOOD && | |
1944 | (conn->flags & TLS_CONN_REQUIRE_OCSP)) { | |
1945 | preverify_ok = 0; | |
1946 | openssl_tls_fail_event(conn, err_cert, err, depth, buf, | |
1947 | "bad certificate status response", | |
1948 | TLS_FAIL_UNSPECIFIED); | |
1949 | } | |
1950 | } | |
1951 | #endif /* OPENSSL_IS_BORINGSSL */ | |
1952 | ||
3c108b75 | 1953 | if (depth == 0 && preverify_ok && context->event_cb != NULL) |
7c0e1e27 PS |
1954 | context->event_cb(context->cb_ctx, |
1955 | TLS_CERT_CHAIN_SUCCESS, NULL); | |
dd7fec1f | 1956 | |
6fc6879b JM |
1957 | return preverify_ok; |
1958 | } | |
1959 | ||
1960 | ||
1961 | #ifndef OPENSSL_NO_STDIO | |
bd9b8b2b | 1962 | static int tls_load_ca_der(struct tls_data *data, const char *ca_cert) |
6fc6879b | 1963 | { |
bd9b8b2b | 1964 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
1965 | X509_LOOKUP *lookup; |
1966 | int ret = 0; | |
1967 | ||
68ae4773 | 1968 | lookup = X509_STORE_add_lookup(SSL_CTX_get_cert_store(ssl_ctx), |
6fc6879b JM |
1969 | X509_LOOKUP_file()); |
1970 | if (lookup == NULL) { | |
1971 | tls_show_errors(MSG_WARNING, __func__, | |
1972 | "Failed add lookup for X509 store"); | |
1973 | return -1; | |
1974 | } | |
1975 | ||
1976 | if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) { | |
1977 | unsigned long err = ERR_peek_error(); | |
1978 | tls_show_errors(MSG_WARNING, __func__, | |
1979 | "Failed load CA in DER format"); | |
1980 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
1981 | ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
1982 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring " | |
1983 | "cert already in hash table error", | |
1984 | __func__); | |
1985 | } else | |
1986 | ret = -1; | |
1987 | } | |
1988 | ||
1989 | return ret; | |
1990 | } | |
1991 | #endif /* OPENSSL_NO_STDIO */ | |
1992 | ||
1993 | ||
bd9b8b2b JM |
1994 | static int tls_connection_ca_cert(struct tls_data *data, |
1995 | struct tls_connection *conn, | |
6fc6879b JM |
1996 | const char *ca_cert, const u8 *ca_cert_blob, |
1997 | size_t ca_cert_blob_len, const char *ca_path) | |
1998 | { | |
bd9b8b2b | 1999 | SSL_CTX *ssl_ctx = data->ssl; |
68ae4773 | 2000 | X509_STORE *store; |
6fc6879b JM |
2001 | |
2002 | /* | |
2003 | * Remove previously configured trusted CA certificates before adding | |
2004 | * new ones. | |
2005 | */ | |
68ae4773 JM |
2006 | store = X509_STORE_new(); |
2007 | if (store == NULL) { | |
6fc6879b JM |
2008 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new " |
2009 | "certificate store", __func__); | |
2010 | return -1; | |
2011 | } | |
68ae4773 | 2012 | SSL_CTX_set_cert_store(ssl_ctx, store); |
6fc6879b | 2013 | |
00468b46 JM |
2014 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); |
2015 | conn->ca_cert_verify = 1; | |
2016 | ||
2017 | if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) { | |
2018 | wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate " | |
2019 | "chain"); | |
2020 | conn->cert_probe = 1; | |
2021 | conn->ca_cert_verify = 0; | |
2022 | return 0; | |
2023 | } | |
2024 | ||
2025 | if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) { | |
2026 | #ifdef CONFIG_SHA256 | |
2027 | const char *pos = ca_cert + 7; | |
2028 | if (os_strncmp(pos, "server/sha256/", 14) != 0) { | |
2029 | wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert " | |
2030 | "hash value '%s'", ca_cert); | |
2031 | return -1; | |
2032 | } | |
2033 | pos += 14; | |
2034 | if (os_strlen(pos) != 32 * 2) { | |
2035 | wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 " | |
2036 | "hash length in ca_cert '%s'", ca_cert); | |
2037 | return -1; | |
2038 | } | |
2039 | if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) { | |
2040 | wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash " | |
2041 | "value in ca_cert '%s'", ca_cert); | |
2042 | return -1; | |
2043 | } | |
2044 | conn->server_cert_only = 1; | |
2045 | wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server " | |
2046 | "certificate match"); | |
2047 | return 0; | |
2048 | #else /* CONFIG_SHA256 */ | |
2049 | wpa_printf(MSG_INFO, "No SHA256 included in the build - " | |
2050 | "cannot validate server certificate hash"); | |
2051 | return -1; | |
2052 | #endif /* CONFIG_SHA256 */ | |
2053 | } | |
2054 | ||
6fc6879b | 2055 | if (ca_cert_blob) { |
fee31f76 JM |
2056 | X509 *cert = d2i_X509(NULL, |
2057 | (const unsigned char **) &ca_cert_blob, | |
6fc6879b JM |
2058 | ca_cert_blob_len); |
2059 | if (cert == NULL) { | |
2060 | tls_show_errors(MSG_WARNING, __func__, | |
2061 | "Failed to parse ca_cert_blob"); | |
2062 | return -1; | |
2063 | } | |
2064 | ||
68ae4773 JM |
2065 | if (!X509_STORE_add_cert(SSL_CTX_get_cert_store(ssl_ctx), |
2066 | cert)) { | |
6fc6879b JM |
2067 | unsigned long err = ERR_peek_error(); |
2068 | tls_show_errors(MSG_WARNING, __func__, | |
2069 | "Failed to add ca_cert_blob to " | |
2070 | "certificate store"); | |
2071 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
2072 | ERR_GET_REASON(err) == | |
2073 | X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
2074 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring " | |
2075 | "cert already in hash table error", | |
2076 | __func__); | |
2077 | } else { | |
2078 | X509_free(cert); | |
2079 | return -1; | |
2080 | } | |
2081 | } | |
2082 | X509_free(cert); | |
2083 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob " | |
2084 | "to certificate store", __func__); | |
6fc6879b JM |
2085 | return 0; |
2086 | } | |
2087 | ||
2a0cd067 | 2088 | #ifdef ANDROID |
a8ef133f | 2089 | /* Single alias */ |
2a0cd067 | 2090 | if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) { |
f150db6c | 2091 | if (tls_add_ca_from_keystore(SSL_CTX_get_cert_store(ssl_ctx), |
a8ef133f | 2092 | &ca_cert[11]) < 0) |
2a0cd067 | 2093 | return -1; |
a8ef133f RX |
2094 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); |
2095 | return 0; | |
2096 | } | |
2a0cd067 | 2097 | |
a8ef133f RX |
2098 | /* Multiple aliases separated by space */ |
2099 | if (ca_cert && os_strncmp("keystores://", ca_cert, 12) == 0) { | |
2100 | char *aliases = os_strdup(&ca_cert[12]); | |
2101 | const char *delim = " "; | |
2102 | int rc = 0; | |
2103 | char *savedptr; | |
2104 | char *alias; | |
2105 | ||
2106 | if (!aliases) | |
2107 | return -1; | |
2108 | alias = strtok_r(aliases, delim, &savedptr); | |
2109 | for (; alias; alias = strtok_r(NULL, delim, &savedptr)) { | |
2110 | if (tls_add_ca_from_keystore_encoded( | |
f150db6c | 2111 | SSL_CTX_get_cert_store(ssl_ctx), alias)) { |
a8ef133f RX |
2112 | wpa_printf(MSG_WARNING, |
2113 | "OpenSSL: %s - Failed to add ca_cert %s from keystore", | |
2114 | __func__, alias); | |
2115 | rc = -1; | |
2116 | break; | |
2a0cd067 DS |
2117 | } |
2118 | } | |
a8ef133f RX |
2119 | os_free(aliases); |
2120 | if (rc) | |
2121 | return rc; | |
2122 | ||
2a0cd067 DS |
2123 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); |
2124 | return 0; | |
2125 | } | |
2126 | #endif /* ANDROID */ | |
2127 | ||
6fc6879b JM |
2128 | #ifdef CONFIG_NATIVE_WINDOWS |
2129 | if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) == | |
2130 | 0) { | |
2131 | wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from " | |
2132 | "system certificate store"); | |
6fc6879b JM |
2133 | return 0; |
2134 | } | |
2135 | #endif /* CONFIG_NATIVE_WINDOWS */ | |
2136 | ||
2137 | if (ca_cert || ca_path) { | |
2138 | #ifndef OPENSSL_NO_STDIO | |
2139 | if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) != | |
2140 | 1) { | |
2141 | tls_show_errors(MSG_WARNING, __func__, | |
2142 | "Failed to load root certificates"); | |
2143 | if (ca_cert && | |
bd9b8b2b | 2144 | tls_load_ca_der(data, ca_cert) == 0) { |
6fc6879b JM |
2145 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded " |
2146 | "DER format CA certificate", | |
2147 | __func__); | |
2148 | } else | |
2149 | return -1; | |
2150 | } else { | |
2151 | wpa_printf(MSG_DEBUG, "TLS: Trusted root " | |
2152 | "certificate(s) loaded"); | |
bd9b8b2b | 2153 | tls_get_errors(data); |
6fc6879b | 2154 | } |
6fc6879b JM |
2155 | #else /* OPENSSL_NO_STDIO */ |
2156 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", | |
2157 | __func__); | |
2158 | return -1; | |
2159 | #endif /* OPENSSL_NO_STDIO */ | |
2160 | } else { | |
2161 | /* No ca_cert configured - do not try to verify server | |
2162 | * certificate */ | |
00468b46 | 2163 | conn->ca_cert_verify = 0; |
6fc6879b JM |
2164 | } |
2165 | ||
2166 | return 0; | |
2167 | } | |
2168 | ||
2169 | ||
bd9b8b2b | 2170 | static int tls_global_ca_cert(struct tls_data *data, const char *ca_cert) |
6fc6879b | 2171 | { |
bd9b8b2b JM |
2172 | SSL_CTX *ssl_ctx = data->ssl; |
2173 | ||
6fc6879b JM |
2174 | if (ca_cert) { |
2175 | if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1) | |
2176 | { | |
2177 | tls_show_errors(MSG_WARNING, __func__, | |
2178 | "Failed to load root certificates"); | |
2179 | return -1; | |
2180 | } | |
2181 | ||
2182 | wpa_printf(MSG_DEBUG, "TLS: Trusted root " | |
2183 | "certificate(s) loaded"); | |
2184 | ||
2185 | #ifndef OPENSSL_NO_STDIO | |
2186 | /* Add the same CAs to the client certificate requests */ | |
2187 | SSL_CTX_set_client_CA_list(ssl_ctx, | |
2188 | SSL_load_client_CA_file(ca_cert)); | |
2189 | #endif /* OPENSSL_NO_STDIO */ | |
2190 | } | |
2191 | ||
2192 | return 0; | |
2193 | } | |
2194 | ||
2195 | ||
2196 | int tls_global_set_verify(void *ssl_ctx, int check_crl) | |
2197 | { | |
2198 | int flags; | |
2199 | ||
2200 | if (check_crl) { | |
bd9b8b2b JM |
2201 | struct tls_data *data = ssl_ctx; |
2202 | X509_STORE *cs = SSL_CTX_get_cert_store(data->ssl); | |
6fc6879b JM |
2203 | if (cs == NULL) { |
2204 | tls_show_errors(MSG_INFO, __func__, "Failed to get " | |
2205 | "certificate store when enabling " | |
2206 | "check_crl"); | |
2207 | return -1; | |
2208 | } | |
2209 | flags = X509_V_FLAG_CRL_CHECK; | |
2210 | if (check_crl == 2) | |
2211 | flags |= X509_V_FLAG_CRL_CHECK_ALL; | |
2212 | X509_STORE_set_flags(cs, flags); | |
2213 | } | |
2214 | return 0; | |
2215 | } | |
2216 | ||
2217 | ||
2218 | static int tls_connection_set_subject_match(struct tls_connection *conn, | |
2219 | const char *subject_match, | |
01f809c7 | 2220 | const char *altsubject_match, |
cebee30f JM |
2221 | const char *suffix_match, |
2222 | const char *domain_match) | |
6fc6879b JM |
2223 | { |
2224 | os_free(conn->subject_match); | |
2225 | conn->subject_match = NULL; | |
2226 | if (subject_match) { | |
2227 | conn->subject_match = os_strdup(subject_match); | |
2228 | if (conn->subject_match == NULL) | |
2229 | return -1; | |
2230 | } | |
2231 | ||
2232 | os_free(conn->altsubject_match); | |
2233 | conn->altsubject_match = NULL; | |
2234 | if (altsubject_match) { | |
2235 | conn->altsubject_match = os_strdup(altsubject_match); | |
2236 | if (conn->altsubject_match == NULL) | |
2237 | return -1; | |
2238 | } | |
2239 | ||
01f809c7 JM |
2240 | os_free(conn->suffix_match); |
2241 | conn->suffix_match = NULL; | |
2242 | if (suffix_match) { | |
2243 | conn->suffix_match = os_strdup(suffix_match); | |
2244 | if (conn->suffix_match == NULL) | |
2245 | return -1; | |
2246 | } | |
2247 | ||
cebee30f JM |
2248 | os_free(conn->domain_match); |
2249 | conn->domain_match = NULL; | |
2250 | if (domain_match) { | |
2251 | conn->domain_match = os_strdup(domain_match); | |
2252 | if (conn->domain_match == NULL) | |
2253 | return -1; | |
2254 | } | |
2255 | ||
6fc6879b JM |
2256 | return 0; |
2257 | } | |
2258 | ||
2259 | ||
93bc6549 JM |
2260 | static void tls_set_conn_flags(SSL *ssl, unsigned int flags) |
2261 | { | |
2262 | #ifdef SSL_OP_NO_TICKET | |
2263 | if (flags & TLS_CONN_DISABLE_SESSION_TICKET) | |
2264 | SSL_set_options(ssl, SSL_OP_NO_TICKET); | |
93bc6549 JM |
2265 | else |
2266 | SSL_clear_options(ssl, SSL_OP_NO_TICKET); | |
93bc6549 JM |
2267 | #endif /* SSL_OP_NO_TICKET */ |
2268 | ||
2269 | #ifdef SSL_OP_NO_TLSv1 | |
2270 | if (flags & TLS_CONN_DISABLE_TLSv1_0) | |
2271 | SSL_set_options(ssl, SSL_OP_NO_TLSv1); | |
2272 | else | |
2273 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1); | |
2274 | #endif /* SSL_OP_NO_TLSv1 */ | |
2275 | #ifdef SSL_OP_NO_TLSv1_1 | |
2276 | if (flags & TLS_CONN_DISABLE_TLSv1_1) | |
2277 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_1); | |
2278 | else | |
2279 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1_1); | |
2280 | #endif /* SSL_OP_NO_TLSv1_1 */ | |
2281 | #ifdef SSL_OP_NO_TLSv1_2 | |
2282 | if (flags & TLS_CONN_DISABLE_TLSv1_2) | |
2283 | SSL_set_options(ssl, SSL_OP_NO_TLSv1_2); | |
2284 | else | |
2285 | SSL_clear_options(ssl, SSL_OP_NO_TLSv1_2); | |
2286 | #endif /* SSL_OP_NO_TLSv1_2 */ | |
2287 | } | |
2288 | ||
2289 | ||
6fc6879b | 2290 | int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn, |
bfbebd26 JM |
2291 | int verify_peer, unsigned int flags, |
2292 | const u8 *session_ctx, size_t session_ctx_len) | |
6fc6879b | 2293 | { |
bf206cad | 2294 | static int counter = 0; |
acf36f31 | 2295 | struct tls_data *data = ssl_ctx; |
bf206cad | 2296 | |
6fc6879b JM |
2297 | if (conn == NULL) |
2298 | return -1; | |
2299 | ||
2300 | if (verify_peer) { | |
00468b46 | 2301 | conn->ca_cert_verify = 1; |
6fc6879b JM |
2302 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER | |
2303 | SSL_VERIFY_FAIL_IF_NO_PEER_CERT | | |
2304 | SSL_VERIFY_CLIENT_ONCE, tls_verify_cb); | |
2305 | } else { | |
00468b46 | 2306 | conn->ca_cert_verify = 0; |
6fc6879b JM |
2307 | SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL); |
2308 | } | |
2309 | ||
93bc6549 JM |
2310 | tls_set_conn_flags(conn->ssl, flags); |
2311 | conn->flags = flags; | |
2312 | ||
6fc6879b JM |
2313 | SSL_set_accept_state(conn->ssl); |
2314 | ||
acf36f31 JM |
2315 | if (data->tls_session_lifetime == 0) { |
2316 | /* | |
2317 | * Set session id context to a unique value to make sure | |
2318 | * session resumption cannot be used either through session | |
2319 | * caching or TLS ticket extension. | |
2320 | */ | |
2321 | counter++; | |
2322 | SSL_set_session_id_context(conn->ssl, | |
2323 | (const unsigned char *) &counter, | |
2324 | sizeof(counter)); | |
2325 | } else if (session_ctx) { | |
2326 | SSL_set_session_id_context(conn->ssl, session_ctx, | |
2327 | session_ctx_len); | |
2328 | } | |
bf206cad | 2329 | |
6fc6879b JM |
2330 | return 0; |
2331 | } | |
2332 | ||
2333 | ||
2334 | static int tls_connection_client_cert(struct tls_connection *conn, | |
2335 | const char *client_cert, | |
2336 | const u8 *client_cert_blob, | |
2337 | size_t client_cert_blob_len) | |
2338 | { | |
2339 | if (client_cert == NULL && client_cert_blob == NULL) | |
2340 | return 0; | |
2341 | ||
21cb63ff | 2342 | #ifdef PKCS12_FUNCS |
df426738 | 2343 | #if OPENSSL_VERSION_NUMBER < 0x10002000L || defined(LIBRESSL_VERSION_NUMBER) |
21cb63ff JM |
2344 | /* |
2345 | * Clear previously set extra chain certificates, if any, from PKCS#12 | |
2346 | * processing in tls_parse_pkcs12() to allow OpenSSL to build a new | |
2347 | * chain properly. | |
2348 | */ | |
2349 | SSL_CTX_clear_extra_chain_certs(conn->ssl_ctx); | |
2350 | #endif /* OPENSSL_VERSION_NUMBER < 0x10002000L */ | |
2351 | #endif /* PKCS12_FUNCS */ | |
2352 | ||
6fc6879b JM |
2353 | if (client_cert_blob && |
2354 | SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob, | |
2355 | client_cert_blob_len) == 1) { | |
2356 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> " | |
2357 | "OK"); | |
2358 | return 0; | |
2359 | } else if (client_cert_blob) { | |
2360 | tls_show_errors(MSG_DEBUG, __func__, | |
2361 | "SSL_use_certificate_ASN1 failed"); | |
2362 | } | |
2363 | ||
2364 | if (client_cert == NULL) | |
2365 | return -1; | |
2366 | ||
2a0cd067 DS |
2367 | #ifdef ANDROID |
2368 | if (os_strncmp("keystore://", client_cert, 11) == 0) { | |
2369 | BIO *bio = BIO_from_keystore(&client_cert[11]); | |
2370 | X509 *x509 = NULL; | |
2371 | int ret = -1; | |
2372 | if (bio) { | |
2373 | x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL); | |
2a0cd067 DS |
2374 | } |
2375 | if (x509) { | |
2376 | if (SSL_use_certificate(conn->ssl, x509) == 1) | |
2377 | ret = 0; | |
2378 | X509_free(x509); | |
2379 | } | |
6d08f23f PS |
2380 | |
2381 | /* Read additional certificates into the chain. */ | |
2382 | while (bio) { | |
2383 | x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL); | |
2384 | if (x509) { | |
2385 | /* Takes ownership of x509 */ | |
2386 | SSL_add0_chain_cert(conn->ssl, x509); | |
2387 | } else { | |
2388 | BIO_free(bio); | |
2389 | bio = NULL; | |
2390 | } | |
2391 | } | |
2a0cd067 DS |
2392 | return ret; |
2393 | } | |
2394 | #endif /* ANDROID */ | |
2395 | ||
6fc6879b JM |
2396 | #ifndef OPENSSL_NO_STDIO |
2397 | if (SSL_use_certificate_file(conn->ssl, client_cert, | |
2398 | SSL_FILETYPE_ASN1) == 1) { | |
2399 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)" | |
2400 | " --> OK"); | |
2401 | return 0; | |
6fc6879b JM |
2402 | } |
2403 | ||
2404 | if (SSL_use_certificate_file(conn->ssl, client_cert, | |
2405 | SSL_FILETYPE_PEM) == 1) { | |
effab86f | 2406 | ERR_clear_error(); |
6fc6879b JM |
2407 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)" |
2408 | " --> OK"); | |
2409 | return 0; | |
6fc6879b | 2410 | } |
effab86f JM |
2411 | |
2412 | tls_show_errors(MSG_DEBUG, __func__, | |
2413 | "SSL_use_certificate_file failed"); | |
6fc6879b JM |
2414 | #else /* OPENSSL_NO_STDIO */ |
2415 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__); | |
2416 | #endif /* OPENSSL_NO_STDIO */ | |
2417 | ||
2418 | return -1; | |
2419 | } | |
2420 | ||
2421 | ||
bd9b8b2b JM |
2422 | static int tls_global_client_cert(struct tls_data *data, |
2423 | const char *client_cert) | |
6fc6879b JM |
2424 | { |
2425 | #ifndef OPENSSL_NO_STDIO | |
bd9b8b2b JM |
2426 | SSL_CTX *ssl_ctx = data->ssl; |
2427 | ||
6fc6879b JM |
2428 | if (client_cert == NULL) |
2429 | return 0; | |
2430 | ||
2431 | if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert, | |
2432 | SSL_FILETYPE_ASN1) != 1 && | |
65897747 | 2433 | SSL_CTX_use_certificate_chain_file(ssl_ctx, client_cert) != 1 && |
6fc6879b JM |
2434 | SSL_CTX_use_certificate_file(ssl_ctx, client_cert, |
2435 | SSL_FILETYPE_PEM) != 1) { | |
2436 | tls_show_errors(MSG_INFO, __func__, | |
2437 | "Failed to load client certificate"); | |
2438 | return -1; | |
2439 | } | |
2440 | return 0; | |
2441 | #else /* OPENSSL_NO_STDIO */ | |
2442 | if (client_cert == NULL) | |
2443 | return 0; | |
2444 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__); | |
2445 | return -1; | |
2446 | #endif /* OPENSSL_NO_STDIO */ | |
2447 | } | |
2448 | ||
2449 | ||
2450 | static int tls_passwd_cb(char *buf, int size, int rwflag, void *password) | |
2451 | { | |
2452 | if (password == NULL) { | |
2453 | return 0; | |
2454 | } | |
2455 | os_strlcpy(buf, (char *) password, size); | |
2456 | return os_strlen(buf); | |
2457 | } | |
2458 | ||
2459 | ||
2460 | #ifdef PKCS12_FUNCS | |
bd9b8b2b | 2461 | static int tls_parse_pkcs12(struct tls_data *data, SSL *ssl, PKCS12 *p12, |
6fc6879b JM |
2462 | const char *passwd) |
2463 | { | |
2464 | EVP_PKEY *pkey; | |
2465 | X509 *cert; | |
2466 | STACK_OF(X509) *certs; | |
2467 | int res = 0; | |
2468 | char buf[256]; | |
2469 | ||
2470 | pkey = NULL; | |
2471 | cert = NULL; | |
2472 | certs = NULL; | |
c07e7b43 JM |
2473 | if (!passwd) |
2474 | passwd = ""; | |
6fc6879b JM |
2475 | if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) { |
2476 | tls_show_errors(MSG_DEBUG, __func__, | |
2477 | "Failed to parse PKCS12 file"); | |
2478 | PKCS12_free(p12); | |
2479 | return -1; | |
2480 | } | |
2481 | wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data"); | |
2482 | ||
2483 | if (cert) { | |
2484 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
2485 | sizeof(buf)); | |
2486 | wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: " | |
2487 | "subject='%s'", buf); | |
2488 | if (ssl) { | |
2489 | if (SSL_use_certificate(ssl, cert) != 1) | |
2490 | res = -1; | |
2491 | } else { | |
bd9b8b2b | 2492 | if (SSL_CTX_use_certificate(data->ssl, cert) != 1) |
6fc6879b JM |
2493 | res = -1; |
2494 | } | |
2495 | X509_free(cert); | |
2496 | } | |
2497 | ||
2498 | if (pkey) { | |
2499 | wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12"); | |
2500 | if (ssl) { | |
2501 | if (SSL_use_PrivateKey(ssl, pkey) != 1) | |
2502 | res = -1; | |
2503 | } else { | |
bd9b8b2b | 2504 | if (SSL_CTX_use_PrivateKey(data->ssl, pkey) != 1) |
6fc6879b JM |
2505 | res = -1; |
2506 | } | |
2507 | EVP_PKEY_free(pkey); | |
2508 | } | |
2509 | ||
2510 | if (certs) { | |
36e82060 | 2511 | #if OPENSSL_VERSION_NUMBER >= 0x10002000L && !defined(LIBRESSL_VERSION_NUMBER) |
dda091cf AB |
2512 | if (ssl) |
2513 | SSL_clear_chain_certs(ssl); | |
2514 | else | |
2515 | SSL_CTX_clear_chain_certs(data->ssl); | |
de2a7b79 JM |
2516 | while ((cert = sk_X509_pop(certs)) != NULL) { |
2517 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
2518 | sizeof(buf)); | |
2519 | wpa_printf(MSG_DEBUG, "TLS: additional certificate" | |
2520 | " from PKCS12: subject='%s'", buf); | |
dda091cf AB |
2521 | if ((ssl && SSL_add1_chain_cert(ssl, cert) != 1) || |
2522 | (!ssl && SSL_CTX_add1_chain_cert(data->ssl, | |
2523 | cert) != 1)) { | |
20f331b7 JM |
2524 | tls_show_errors(MSG_DEBUG, __func__, |
2525 | "Failed to add additional certificate"); | |
de2a7b79 | 2526 | res = -1; |
8bcf8de8 | 2527 | X509_free(cert); |
de2a7b79 JM |
2528 | break; |
2529 | } | |
8bcf8de8 | 2530 | X509_free(cert); |
de2a7b79 | 2531 | } |
20f331b7 JM |
2532 | if (!res) { |
2533 | /* Try to continue anyway */ | |
2534 | } | |
8bcf8de8 | 2535 | sk_X509_pop_free(certs, X509_free); |
226cdea6 | 2536 | #ifndef OPENSSL_IS_BORINGSSL |
dda091cf AB |
2537 | if (ssl) |
2538 | res = SSL_build_cert_chain( | |
2539 | ssl, | |
2540 | SSL_BUILD_CHAIN_FLAG_CHECK | | |
2541 | SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR); | |
2542 | else | |
2543 | res = SSL_CTX_build_cert_chain( | |
2544 | data->ssl, | |
2545 | SSL_BUILD_CHAIN_FLAG_CHECK | | |
2546 | SSL_BUILD_CHAIN_FLAG_IGNORE_ERROR); | |
de2a7b79 JM |
2547 | if (!res) { |
2548 | tls_show_errors(MSG_DEBUG, __func__, | |
2549 | "Failed to build certificate chain"); | |
2550 | } else if (res == 2) { | |
2551 | wpa_printf(MSG_DEBUG, | |
2552 | "TLS: Ignore certificate chain verification error when building chain with PKCS#12 extra certificates"); | |
2553 | } | |
226cdea6 | 2554 | #endif /* OPENSSL_IS_BORINGSSL */ |
de2a7b79 JM |
2555 | /* |
2556 | * Try to continue regardless of result since it is possible for | |
2557 | * the extra certificates not to be required. | |
2558 | */ | |
2559 | res = 0; | |
2560 | #else /* OPENSSL_VERSION_NUMBER >= 0x10002000L */ | |
bd9b8b2b | 2561 | SSL_CTX_clear_extra_chain_certs(data->ssl); |
6fc6879b JM |
2562 | while ((cert = sk_X509_pop(certs)) != NULL) { |
2563 | X509_NAME_oneline(X509_get_subject_name(cert), buf, | |
2564 | sizeof(buf)); | |
2565 | wpa_printf(MSG_DEBUG, "TLS: additional certificate" | |
2566 | " from PKCS12: subject='%s'", buf); | |
2567 | /* | |
2568 | * There is no SSL equivalent for the chain cert - so | |
2569 | * always add it to the context... | |
2570 | */ | |
bd9b8b2b JM |
2571 | if (SSL_CTX_add_extra_chain_cert(data->ssl, cert) != 1) |
2572 | { | |
8bcf8de8 | 2573 | X509_free(cert); |
6fc6879b JM |
2574 | res = -1; |
2575 | break; | |
2576 | } | |
2577 | } | |
8bcf8de8 | 2578 | sk_X509_pop_free(certs, X509_free); |
de2a7b79 | 2579 | #endif /* OPENSSL_VERSION_NUMBER >= 0x10002000L */ |
6fc6879b JM |
2580 | } |
2581 | ||
2582 | PKCS12_free(p12); | |
2583 | ||
2584 | if (res < 0) | |
bd9b8b2b | 2585 | tls_get_errors(data); |
6fc6879b JM |
2586 | |
2587 | return res; | |
2588 | } | |
2589 | #endif /* PKCS12_FUNCS */ | |
2590 | ||
2591 | ||
bd9b8b2b JM |
2592 | static int tls_read_pkcs12(struct tls_data *data, SSL *ssl, |
2593 | const char *private_key, const char *passwd) | |
6fc6879b JM |
2594 | { |
2595 | #ifdef PKCS12_FUNCS | |
2596 | FILE *f; | |
2597 | PKCS12 *p12; | |
2598 | ||
2599 | f = fopen(private_key, "rb"); | |
2600 | if (f == NULL) | |
2601 | return -1; | |
2602 | ||
2603 | p12 = d2i_PKCS12_fp(f, NULL); | |
2604 | fclose(f); | |
2605 | ||
2606 | if (p12 == NULL) { | |
2607 | tls_show_errors(MSG_INFO, __func__, | |
2608 | "Failed to use PKCS#12 file"); | |
2609 | return -1; | |
2610 | } | |
2611 | ||
bd9b8b2b | 2612 | return tls_parse_pkcs12(data, ssl, p12, passwd); |
6fc6879b JM |
2613 | |
2614 | #else /* PKCS12_FUNCS */ | |
2615 | wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read " | |
2616 | "p12/pfx files"); | |
2617 | return -1; | |
2618 | #endif /* PKCS12_FUNCS */ | |
2619 | } | |
2620 | ||
2621 | ||
bd9b8b2b | 2622 | static int tls_read_pkcs12_blob(struct tls_data *data, SSL *ssl, |
6fc6879b JM |
2623 | const u8 *blob, size_t len, const char *passwd) |
2624 | { | |
2625 | #ifdef PKCS12_FUNCS | |
2626 | PKCS12 *p12; | |
2627 | ||
fee31f76 | 2628 | p12 = d2i_PKCS12(NULL, (const unsigned char **) &blob, len); |
6fc6879b JM |
2629 | if (p12 == NULL) { |
2630 | tls_show_errors(MSG_INFO, __func__, | |
2631 | "Failed to use PKCS#12 blob"); | |
2632 | return -1; | |
2633 | } | |
2634 | ||
bd9b8b2b | 2635 | return tls_parse_pkcs12(data, ssl, p12, passwd); |
6fc6879b JM |
2636 | |
2637 | #else /* PKCS12_FUNCS */ | |
2638 | wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse " | |
2639 | "p12/pfx blobs"); | |
2640 | return -1; | |
2641 | #endif /* PKCS12_FUNCS */ | |
2642 | } | |
2643 | ||
2644 | ||
e572cb63 | 2645 | #ifndef OPENSSL_NO_ENGINE |
e59c91af DS |
2646 | static int tls_engine_get_cert(struct tls_connection *conn, |
2647 | const char *cert_id, | |
2648 | X509 **cert) | |
2649 | { | |
e59c91af DS |
2650 | /* this runs after the private key is loaded so no PIN is required */ |
2651 | struct { | |
2652 | const char *cert_id; | |
2653 | X509 *cert; | |
2654 | } params; | |
2655 | params.cert_id = cert_id; | |
2656 | params.cert = NULL; | |
2657 | ||
2658 | if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL", | |
2659 | 0, ¶ms, NULL, 1)) { | |
fd4fb281 MG |
2660 | unsigned long err = ERR_get_error(); |
2661 | ||
e59c91af DS |
2662 | wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id" |
2663 | " '%s' [%s]", cert_id, | |
fd4fb281 MG |
2664 | ERR_error_string(err, NULL)); |
2665 | if (tls_is_pin_error(err)) | |
2666 | return TLS_SET_PARAMS_ENGINE_PRV_BAD_PIN; | |
e59c91af DS |
2667 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; |
2668 | } | |
2669 | if (!params.cert) { | |
2670 | wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id" | |
2671 | " '%s'", cert_id); | |
2672 | return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED; | |
2673 | } | |
2674 | *cert = params.cert; | |
2675 | return 0; | |
e59c91af | 2676 | } |
e572cb63 | 2677 | #endif /* OPENSSL_NO_ENGINE */ |
e59c91af DS |
2678 | |
2679 | ||
2680 | static int tls_connection_engine_client_cert(struct tls_connection *conn, | |
2681 | const char *cert_id) | |
2682 | { | |
2683 | #ifndef OPENSSL_NO_ENGINE | |
2684 | X509 *cert; | |
2685 | ||
2686 | if (tls_engine_get_cert(conn, cert_id, &cert)) | |
2687 | return -1; | |
2688 | ||
2689 | if (!SSL_use_certificate(conn->ssl, cert)) { | |
2690 | tls_show_errors(MSG_ERROR, __func__, | |
2691 | "SSL_use_certificate failed"); | |
2692 | X509_free(cert); | |
2693 | return -1; | |
2694 | } | |
2695 | X509_free(cert); | |
2696 | wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> " | |
2697 | "OK"); | |
2698 | return 0; | |
2699 | ||
2700 | #else /* OPENSSL_NO_ENGINE */ | |
2701 | return -1; | |
2702 | #endif /* OPENSSL_NO_ENGINE */ | |
2703 | } | |
2704 | ||
2705 | ||
bd9b8b2b | 2706 | static int tls_connection_engine_ca_cert(struct tls_data *data, |
e59c91af DS |
2707 | struct tls_connection *conn, |
2708 | const char *ca_cert_id) | |
2709 | { | |
2710 | #ifndef OPENSSL_NO_ENGINE | |
2711 | X509 *cert; | |
bd9b8b2b | 2712 | SSL_CTX *ssl_ctx = data->ssl; |
68ae4773 | 2713 | X509_STORE *store; |
e59c91af DS |
2714 | |
2715 | if (tls_engine_get_cert(conn, ca_cert_id, &cert)) | |
2716 | return -1; | |
2717 | ||
2718 | /* start off the same as tls_connection_ca_cert */ | |
68ae4773 JM |
2719 | store = X509_STORE_new(); |
2720 | if (store == NULL) { | |
e59c91af DS |
2721 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new " |
2722 | "certificate store", __func__); | |
2723 | X509_free(cert); | |
2724 | return -1; | |
2725 | } | |
68ae4773 JM |
2726 | SSL_CTX_set_cert_store(ssl_ctx, store); |
2727 | if (!X509_STORE_add_cert(store, cert)) { | |
e59c91af DS |
2728 | unsigned long err = ERR_peek_error(); |
2729 | tls_show_errors(MSG_WARNING, __func__, | |
2730 | "Failed to add CA certificate from engine " | |
2731 | "to certificate store"); | |
2732 | if (ERR_GET_LIB(err) == ERR_LIB_X509 && | |
2733 | ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) { | |
2734 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert" | |
2735 | " already in hash table error", | |
2736 | __func__); | |
2737 | } else { | |
2738 | X509_free(cert); | |
2739 | return -1; | |
2740 | } | |
2741 | } | |
2742 | X509_free(cert); | |
2743 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine " | |
2744 | "to certificate store", __func__); | |
2745 | SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb); | |
d8858cad CW |
2746 | conn->ca_cert_verify = 1; |
2747 | ||
e59c91af DS |
2748 | return 0; |
2749 | ||
2750 | #else /* OPENSSL_NO_ENGINE */ | |
2751 | return -1; | |
2752 | #endif /* OPENSSL_NO_ENGINE */ | |
2753 | } | |
2754 | ||
2755 | ||
6fc6879b JM |
2756 | static int tls_connection_engine_private_key(struct tls_connection *conn) |
2757 | { | |
aeeb0bca | 2758 | #if defined(ANDROID) || !defined(OPENSSL_NO_ENGINE) |
6fc6879b JM |
2759 | if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) { |
2760 | tls_show_errors(MSG_ERROR, __func__, | |
2761 | "ENGINE: cannot use private key for TLS"); | |
2762 | return -1; | |
2763 | } | |
2764 | if (!SSL_check_private_key(conn->ssl)) { | |
2765 | tls_show_errors(MSG_INFO, __func__, | |
2766 | "Private key failed verification"); | |
2767 | return -1; | |
2768 | } | |
2769 | return 0; | |
2770 | #else /* OPENSSL_NO_ENGINE */ | |
2771 | wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but " | |
2772 | "engine support was not compiled in"); | |
2773 | return -1; | |
2774 | #endif /* OPENSSL_NO_ENGINE */ | |
2775 | } | |
2776 | ||
2777 | ||
bd9b8b2b | 2778 | static int tls_connection_private_key(struct tls_data *data, |
6fc6879b JM |
2779 | struct tls_connection *conn, |
2780 | const char *private_key, | |
2781 | const char *private_key_passwd, | |
2782 | const u8 *private_key_blob, | |
2783 | size_t private_key_blob_len) | |
2784 | { | |
bd9b8b2b | 2785 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
2786 | char *passwd; |
2787 | int ok; | |
2788 | ||
2789 | if (private_key == NULL && private_key_blob == NULL) | |
2790 | return 0; | |
2791 | ||
2792 | if (private_key_passwd) { | |
2793 | passwd = os_strdup(private_key_passwd); | |
2794 | if (passwd == NULL) | |
2795 | return -1; | |
2796 | } else | |
2797 | passwd = NULL; | |
2798 | ||
2799 | SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb); | |
2800 | SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd); | |
2801 | ||
2802 | ok = 0; | |
2803 | while (private_key_blob) { | |
2804 | if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl, | |
2805 | (u8 *) private_key_blob, | |
2806 | private_key_blob_len) == 1) { | |
2807 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_" | |
2808 | "ASN1(EVP_PKEY_RSA) --> OK"); | |
2809 | ok = 1; | |
2810 | break; | |
6fc6879b JM |
2811 | } |
2812 | ||
2813 | if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl, | |
2814 | (u8 *) private_key_blob, | |
2815 | private_key_blob_len) == 1) { | |
2816 | wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_" | |
2817 | "ASN1(EVP_PKEY_DSA) --> OK"); | |
2818 | ok = 1; | |
2819 | break; | |
6fc6879b JM |
2820 | } |
2821 | ||
2822 | if (SSL_use_RSAPrivateKey_ASN1(conn->ssl, | |
2823 | (u8 *) private_key_blob, | |
2824 | private_key_blob_len) == 1) { | |
2825 | wpa_printf(MSG_DEBUG, "OpenSSL: " | |
2826 | "SSL_use_RSAPrivateKey_ASN1 --> OK"); | |
2827 | ok = 1; | |
2828 | break; | |
6fc6879b JM |
2829 | } |
2830 | ||
bd9b8b2b | 2831 | if (tls_read_pkcs12_blob(data, conn->ssl, private_key_blob, |
6fc6879b JM |
2832 | private_key_blob_len, passwd) == 0) { |
2833 | wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> " | |
2834 | "OK"); | |
2835 | ok = 1; | |
2836 | break; | |
2837 | } | |
2838 | ||
2839 | break; | |
2840 | } | |
2841 | ||
2842 | while (!ok && private_key) { | |
2843 | #ifndef OPENSSL_NO_STDIO | |
2844 | if (SSL_use_PrivateKey_file(conn->ssl, private_key, | |
2845 | SSL_FILETYPE_ASN1) == 1) { | |
2846 | wpa_printf(MSG_DEBUG, "OpenSSL: " | |
2847 | "SSL_use_PrivateKey_File (DER) --> OK"); | |
2848 | ok = 1; | |
2849 | break; | |
6fc6879b JM |
2850 | } |
2851 | ||
2852 | if (SSL_use_PrivateKey_file(conn->ssl, private_key, | |
2853 | SSL_FILETYPE_PEM) == 1) { | |
2854 | wpa_printf(MSG_DEBUG, "OpenSSL: " | |
2855 | "SSL_use_PrivateKey_File (PEM) --> OK"); | |
2856 | ok = 1; | |
2857 | break; | |
6fc6879b JM |
2858 | } |
2859 | #else /* OPENSSL_NO_STDIO */ | |
2860 | wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", | |
2861 | __func__); | |
2862 | #endif /* OPENSSL_NO_STDIO */ | |
2863 | ||
bd9b8b2b | 2864 | if (tls_read_pkcs12(data, conn->ssl, private_key, passwd) |
6fc6879b JM |
2865 | == 0) { |
2866 | wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file " | |
2867 | "--> OK"); | |
2868 | ok = 1; | |
2869 | break; | |
2870 | } | |
2871 | ||
2872 | if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) { | |
2873 | wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to " | |
2874 | "access certificate store --> OK"); | |
2875 | ok = 1; | |
2876 | break; | |
2877 | } | |
2878 | ||
2879 | break; | |
2880 | } | |
2881 | ||
2882 | if (!ok) { | |
effab86f JM |
2883 | tls_show_errors(MSG_INFO, __func__, |
2884 | "Failed to load private key"); | |
6fc6879b | 2885 | os_free(passwd); |
6fc6879b JM |
2886 | return -1; |
2887 | } | |
2888 | ERR_clear_error(); | |
2889 | SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL); | |
2890 | os_free(passwd); | |
55651a4b | 2891 | |
6fc6879b JM |
2892 | if (!SSL_check_private_key(conn->ssl)) { |
2893 | tls_show_errors(MSG_INFO, __func__, "Private key failed " | |
2894 | "verification"); | |
2895 | return -1; | |
2896 | } | |
2897 | ||
2898 | wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully"); | |
2899 | return 0; | |
2900 | } | |
2901 | ||
2902 | ||
bd9b8b2b JM |
2903 | static int tls_global_private_key(struct tls_data *data, |
2904 | const char *private_key, | |
6fc6879b JM |
2905 | const char *private_key_passwd) |
2906 | { | |
bd9b8b2b | 2907 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
2908 | char *passwd; |
2909 | ||
2910 | if (private_key == NULL) | |
2911 | return 0; | |
2912 | ||
2913 | if (private_key_passwd) { | |
2914 | passwd = os_strdup(private_key_passwd); | |
2915 | if (passwd == NULL) | |
2916 | return -1; | |
2917 | } else | |
2918 | passwd = NULL; | |
2919 | ||
2920 | SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb); | |
2921 | SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd); | |
2922 | if ( | |
2923 | #ifndef OPENSSL_NO_STDIO | |
2924 | SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key, | |
2925 | SSL_FILETYPE_ASN1) != 1 && | |
2926 | SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key, | |
2927 | SSL_FILETYPE_PEM) != 1 && | |
2928 | #endif /* OPENSSL_NO_STDIO */ | |
bd9b8b2b | 2929 | tls_read_pkcs12(data, NULL, private_key, passwd)) { |
6fc6879b JM |
2930 | tls_show_errors(MSG_INFO, __func__, |
2931 | "Failed to load private key"); | |
2932 | os_free(passwd); | |
2933 | ERR_clear_error(); | |
2934 | return -1; | |
2935 | } | |
2936 | os_free(passwd); | |
2937 | ERR_clear_error(); | |
2938 | SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL); | |
55651a4b | 2939 | |
6fc6879b JM |
2940 | if (!SSL_CTX_check_private_key(ssl_ctx)) { |
2941 | tls_show_errors(MSG_INFO, __func__, | |
2942 | "Private key failed verification"); | |
2943 | return -1; | |
2944 | } | |
2945 | ||
2946 | return 0; | |
2947 | } | |
2948 | ||
2949 | ||
2950 | static int tls_connection_dh(struct tls_connection *conn, const char *dh_file) | |
2951 | { | |
2952 | #ifdef OPENSSL_NO_DH | |
2953 | if (dh_file == NULL) | |
2954 | return 0; | |
2955 | wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but " | |
2956 | "dh_file specified"); | |
2957 | return -1; | |
2958 | #else /* OPENSSL_NO_DH */ | |
2959 | DH *dh; | |
2960 | BIO *bio; | |
2961 | ||
2962 | /* TODO: add support for dh_blob */ | |
2963 | if (dh_file == NULL) | |
2964 | return 0; | |
2965 | if (conn == NULL) | |
2966 | return -1; | |
2967 | ||
2968 | bio = BIO_new_file(dh_file, "r"); | |
2969 | if (bio == NULL) { | |
2970 | wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s", | |
2971 | dh_file, ERR_error_string(ERR_get_error(), NULL)); | |
2972 | return -1; | |
2973 | } | |
2974 | dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); | |
2975 | BIO_free(bio); | |
2976 | #ifndef OPENSSL_NO_DSA | |
2977 | while (dh == NULL) { | |
2978 | DSA *dsa; | |
2979 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -" | |
2980 | " trying to parse as DSA params", dh_file, | |
2981 | ERR_error_string(ERR_get_error(), NULL)); | |
2982 | bio = BIO_new_file(dh_file, "r"); | |
2983 | if (bio == NULL) | |
2984 | break; | |
2985 | dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL); | |
2986 | BIO_free(bio); | |
2987 | if (!dsa) { | |
2988 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file " | |
2989 | "'%s': %s", dh_file, | |
2990 | ERR_error_string(ERR_get_error(), NULL)); | |
2991 | break; | |
2992 | } | |
2993 | ||
2994 | wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format"); | |
2995 | dh = DSA_dup_DH(dsa); | |
2996 | DSA_free(dsa); | |
2997 | if (dh == NULL) { | |
2998 | wpa_printf(MSG_INFO, "TLS: Failed to convert DSA " | |
2999 | "params into DH params"); | |
3000 | break; | |
3001 | } | |
3002 | break; | |
3003 | } | |
3004 | #endif /* !OPENSSL_NO_DSA */ | |
3005 | if (dh == NULL) { | |
3006 | wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file " | |
3007 | "'%s'", dh_file); | |
3008 | return -1; | |
3009 | } | |
3010 | ||
3011 | if (SSL_set_tmp_dh(conn->ssl, dh) != 1) { | |
3012 | wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': " | |
3013 | "%s", dh_file, | |
3014 | ERR_error_string(ERR_get_error(), NULL)); | |
3015 | DH_free(dh); | |
3016 | return -1; | |
3017 | } | |
3018 | DH_free(dh); | |
3019 | return 0; | |
3020 | #endif /* OPENSSL_NO_DH */ | |
3021 | } | |
3022 | ||
3023 | ||
bd9b8b2b | 3024 | static int tls_global_dh(struct tls_data *data, const char *dh_file) |
6fc6879b JM |
3025 | { |
3026 | #ifdef OPENSSL_NO_DH | |
3027 | if (dh_file == NULL) | |
3028 | return 0; | |
3029 | wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but " | |
3030 | "dh_file specified"); | |
3031 | return -1; | |
3032 | #else /* OPENSSL_NO_DH */ | |
bd9b8b2b | 3033 | SSL_CTX *ssl_ctx = data->ssl; |
6fc6879b JM |
3034 | DH *dh; |
3035 | BIO *bio; | |
3036 | ||
3037 | /* TODO: add support for dh_blob */ | |
3038 | if (dh_file == NULL) | |
3039 | return 0; | |
3040 | if (ssl_ctx == NULL) | |
3041 | return -1; | |
3042 | ||
3043 | bio = BIO_new_file(dh_file, "r"); | |
3044 | if (bio == NULL) { | |
3045 | wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s", | |
3046 | dh_file, ERR_error_string(ERR_get_error(), NULL)); | |
3047 | return -1; | |
3048 | } | |
3049 | dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL); | |
3050 | BIO_free(bio); | |
3051 | #ifndef OPENSSL_NO_DSA | |
3052 | while (dh == NULL) { | |
3053 | DSA *dsa; | |
3054 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -" | |
3055 | " trying to parse as DSA params", dh_file, | |
3056 | ERR_error_string(ERR_get_error(), NULL)); | |
3057 | bio = BIO_new_file(dh_file, "r"); | |
3058 | if (bio == NULL) | |
3059 | break; | |
3060 | dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL); | |
3061 | BIO_free(bio); | |
3062 | if (!dsa) { | |
3063 | wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file " | |
3064 | "'%s': %s", dh_file, | |
3065 | ERR_error_string(ERR_get_error(), NULL)); | |
3066 | break; | |
3067 | } | |
3068 | ||
3069 | wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format"); | |
3070 | dh = DSA_dup_DH(dsa); | |
3071 | DSA_free(dsa); | |
3072 | if (dh == NULL) { | |
3073 | wpa_printf(MSG_INFO, "TLS: Failed to convert DSA " | |
3074 | "params into DH params"); | |
3075 | break; | |
3076 | } | |
3077 | break; | |
3078 | } | |
3079 | #endif /* !OPENSSL_NO_DSA */ | |
3080 | if (dh == NULL) { | |
3081 | wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file " | |
3082 | "'%s'", dh_file); | |
3083 | return -1; | |
3084 | } | |
3085 | ||
3086 | if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) { | |
3087 | wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': " | |
3088 | "%s", dh_file, | |
3089 | ERR_error_string(ERR_get_error(), NULL)); | |
3090 | DH_free(dh); | |
3091 | return -1; | |
3092 | } | |
3093 | DH_free(dh); | |
3094 | return 0; | |
3095 | #endif /* OPENSSL_NO_DH */ | |
3096 | } | |
3097 | ||
3098 | ||
1046db8b JM |
3099 | int tls_connection_get_random(void *ssl_ctx, struct tls_connection *conn, |
3100 | struct tls_random *keys) | |
6fc6879b JM |
3101 | { |
3102 | SSL *ssl; | |
3103 | ||
3104 | if (conn == NULL || keys == NULL) | |
3105 | return -1; | |
3106 | ssl = conn->ssl; | |
005c5dcf JM |
3107 | if (ssl == NULL) |
3108 | return -1; | |
3109 | ||
3110 | os_memset(keys, 0, sizeof(*keys)); | |
3111 | keys->client_random = conn->client_random; | |
3112 | keys->client_random_len = SSL_get_client_random( | |
3113 | ssl, conn->client_random, sizeof(conn->client_random)); | |
3114 | keys->server_random = conn->server_random; | |
3115 | keys->server_random_len = SSL_get_server_random( | |
3116 | ssl, conn->server_random, sizeof(conn->server_random)); | |
6fc6879b JM |
3117 | |
3118 | return 0; | |
3119 | } | |
3120 | ||
3121 | ||
1cece2fa | 3122 | #ifdef OPENSSL_NEED_EAP_FAST_PRF |
af851914 JM |
3123 | static int openssl_get_keyblock_size(SSL *ssl) |
3124 | { | |
36e82060 | 3125 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
af851914 JM |
3126 | const EVP_CIPHER *c; |
3127 | const EVP_MD *h; | |
3128 | int md_size; | |
3129 | ||
3130 | if (ssl->enc_read_ctx == NULL || ssl->enc_read_ctx->cipher == NULL || | |
3131 | ssl->read_hash == NULL) | |
3132 | return -1; | |
3133 | ||
3134 | c = ssl->enc_read_ctx->cipher; | |
af851914 | 3135 | h = EVP_MD_CTX_md(ssl->read_hash); |
af851914 JM |
3136 | if (h) |
3137 | md_size = EVP_MD_size(h); | |
af851914 JM |
3138 | else if (ssl->s3) |
3139 | md_size = ssl->s3->tmp.new_mac_secret_size; | |
af851914 JM |
3140 | else |
3141 | return -1; | |
3142 | ||
3143 | wpa_printf(MSG_DEBUG, "OpenSSL: keyblock size: key_len=%d MD_size=%d " | |
3144 | "IV_len=%d", EVP_CIPHER_key_length(c), md_size, | |
3145 | EVP_CIPHER_iv_length(c)); | |
3146 | return 2 * (EVP_CIPHER_key_length(c) + | |
3147 | md_size + | |
3148 | EVP_CIPHER_iv_length(c)); | |
3de28506 JM |
3149 | #else |
3150 | const SSL_CIPHER *ssl_cipher; | |
3151 | int cipher, digest; | |
3152 | const EVP_CIPHER *c; | |
3153 | const EVP_MD *h; | |
3154 | ||
3155 | ssl_cipher = SSL_get_current_cipher(ssl); | |
3156 | if (!ssl_cipher) | |
3157 | return -1; | |
3158 | cipher = SSL_CIPHER_get_cipher_nid(ssl_cipher); | |
3159 | digest = SSL_CIPHER_get_digest_nid(ssl_cipher); | |
3160 | wpa_printf(MSG_DEBUG, "OpenSSL: cipher nid %d digest nid %d", | |
3161 | cipher, digest); | |
3162 | if (cipher < 0 || digest < 0) | |
3163 | return -1; | |
3164 | c = EVP_get_cipherbynid(cipher); | |
3165 | h = EVP_get_digestbynid(digest); | |
3166 | if (!c || !h) | |
3167 | return -1; | |
3168 | ||
3169 | wpa_printf(MSG_DEBUG, | |
3170 | "OpenSSL: keyblock size: key_len=%d MD_size=%d IV_len=%d", | |
3171 | EVP_CIPHER_key_length(c), EVP_MD_size(h), | |
3172 | EVP_CIPHER_iv_length(c)); | |
3173 | return 2 * (EVP_CIPHER_key_length(c) + EVP_MD_size(h) + | |
3174 | EVP_CIPHER_iv_length(c)); | |
3175 | #endif | |
af851914 | 3176 | } |
1cece2fa | 3177 | #endif /* OPENSSL_NEED_EAP_FAST_PRF */ |
af851914 JM |
3178 | |
3179 | ||
73581707 DB |
3180 | int tls_connection_export_key(void *tls_ctx, struct tls_connection *conn, |
3181 | const char *label, u8 *out, size_t out_len) | |
3182 | { | |
3183 | if (!conn || | |
3184 | SSL_export_keying_material(conn->ssl, out, out_len, label, | |
3185 | os_strlen(label), NULL, 0, 0) != 1) | |
3186 | return -1; | |
3187 | return 0; | |
3188 | } | |
3189 | ||
3190 | ||
3191 | int tls_connection_get_eap_fast_key(void *tls_ctx, struct tls_connection *conn, | |
3192 | u8 *out, size_t out_len) | |
fa0e7151 | 3193 | { |
1cece2fa | 3194 | #ifdef OPENSSL_NEED_EAP_FAST_PRF |
3de28506 JM |
3195 | SSL *ssl; |
3196 | SSL_SESSION *sess; | |
3197 | u8 *rnd; | |
3198 | int ret = -1; | |
3199 | int skip = 0; | |
3200 | u8 *tmp_out = NULL; | |
3201 | u8 *_out = out; | |
3202 | unsigned char client_random[SSL3_RANDOM_SIZE]; | |
3203 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
3204 | unsigned char master_key[64]; | |
3205 | size_t master_key_len; | |
16bc3b89 | 3206 | const char *ver; |
3de28506 JM |
3207 | |
3208 | /* | |
73581707 DB |
3209 | * TLS library did not support EAP-FAST key generation, so get the |
3210 | * needed TLS session parameters and use an internal implementation of | |
3211 | * TLS PRF to derive the key. | |
3de28506 JM |
3212 | */ |
3213 | ||
3214 | if (conn == NULL) | |
3215 | return -1; | |
3216 | ssl = conn->ssl; | |
3217 | if (ssl == NULL) | |
3218 | return -1; | |
16bc3b89 | 3219 | ver = SSL_get_version(ssl); |
3de28506 | 3220 | sess = SSL_get_session(ssl); |
16bc3b89 | 3221 | if (!ver || !sess) |
3de28506 JM |
3222 | return -1; |
3223 | ||
73581707 DB |
3224 | skip = openssl_get_keyblock_size(ssl); |
3225 | if (skip < 0) | |
3226 | return -1; | |
3227 | tmp_out = os_malloc(skip + out_len); | |
3228 | if (!tmp_out) | |
3229 | return -1; | |
3230 | _out = tmp_out; | |
3de28506 JM |
3231 | |
3232 | rnd = os_malloc(2 * SSL3_RANDOM_SIZE); | |
3233 | if (!rnd) { | |
3234 | os_free(tmp_out); | |
3235 | return -1; | |
3236 | } | |
3237 | ||
3238 | SSL_get_client_random(ssl, client_random, sizeof(client_random)); | |
3239 | SSL_get_server_random(ssl, server_random, sizeof(server_random)); | |
3240 | master_key_len = SSL_SESSION_get_master_key(sess, master_key, | |
3241 | sizeof(master_key)); | |
3242 | ||
73581707 DB |
3243 | os_memcpy(rnd, server_random, SSL3_RANDOM_SIZE); |
3244 | os_memcpy(rnd + SSL3_RANDOM_SIZE, client_random, SSL3_RANDOM_SIZE); | |
3de28506 | 3245 | |
16bc3b89 JM |
3246 | if (os_strcmp(ver, "TLSv1.2") == 0) { |
3247 | tls_prf_sha256(master_key, master_key_len, | |
73581707 | 3248 | "key expansion", rnd, 2 * SSL3_RANDOM_SIZE, |
16bc3b89 | 3249 | _out, skip + out_len); |
3de28506 | 3250 | ret = 0; |
16bc3b89 | 3251 | } else if (tls_prf_sha1_md5(master_key, master_key_len, |
73581707 | 3252 | "key expansion", rnd, 2 * SSL3_RANDOM_SIZE, |
16bc3b89 JM |
3253 | _out, skip + out_len) == 0) { |
3254 | ret = 0; | |
3255 | } | |
3de28506 JM |
3256 | os_memset(master_key, 0, sizeof(master_key)); |
3257 | os_free(rnd); | |
73581707 | 3258 | if (ret == 0) |
3de28506 JM |
3259 | os_memcpy(out, _out + skip, out_len); |
3260 | bin_clear_free(tmp_out, skip); | |
3261 | ||
3262 | return ret; | |
1cece2fa DB |
3263 | #else /* OPENSSL_NEED_EAP_FAST_PRF */ |
3264 | wpa_printf(MSG_ERROR, | |
3265 | "OpenSSL: EAP-FAST keys cannot be exported in FIPS mode"); | |
3266 | return -1; | |
3267 | #endif /* OPENSSL_NEED_EAP_FAST_PRF */ | |
fa0e7151 JM |
3268 | } |
3269 | ||
3270 | ||
81c85c06 JM |
3271 | static struct wpabuf * |
3272 | openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data, | |
3273 | int server) | |
6fc6879b JM |
3274 | { |
3275 | int res; | |
81c85c06 | 3276 | struct wpabuf *out_data; |
6fc6879b JM |
3277 | |
3278 | /* | |
3279 | * Give TLS handshake data from the server (if available) to OpenSSL | |
3280 | * for processing. | |
3281 | */ | |
e9690eb7 | 3282 | if (in_data && wpabuf_len(in_data) > 0 && |
81c85c06 JM |
3283 | BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data)) |
3284 | < 0) { | |
6fc6879b JM |
3285 | tls_show_errors(MSG_INFO, __func__, |
3286 | "Handshake failed - BIO_write"); | |
3287 | return NULL; | |
3288 | } | |
3289 | ||
3290 | /* Initiate TLS handshake or continue the existing handshake */ | |
81c85c06 JM |
3291 | if (server) |
3292 | res = SSL_accept(conn->ssl); | |
3293 | else | |
3294 | res = SSL_connect(conn->ssl); | |
6fc6879b JM |
3295 | if (res != 1) { |
3296 | int err = SSL_get_error(conn->ssl, res); | |
3297 | if (err == SSL_ERROR_WANT_READ) | |
3298 | wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want " | |
3299 | "more data"); | |
3300 | else if (err == SSL_ERROR_WANT_WRITE) | |
3301 | wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to " | |
3302 | "write"); | |
3303 | else { | |
3304 | tls_show_errors(MSG_INFO, __func__, "SSL_connect"); | |
3305 | conn->failed++; | |
3306 | } | |
3307 | } | |
3308 | ||
3309 | /* Get the TLS handshake data to be sent to the server */ | |
3310 | res = BIO_ctrl_pending(conn->ssl_out); | |
3311 | wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res); | |
81c85c06 | 3312 | out_data = wpabuf_alloc(res); |
6fc6879b JM |
3313 | if (out_data == NULL) { |
3314 | wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for " | |
3315 | "handshake output (%d bytes)", res); | |
3316 | if (BIO_reset(conn->ssl_out) < 0) { | |
3317 | tls_show_errors(MSG_INFO, __func__, | |
3318 | "BIO_reset failed"); | |
3319 | } | |
6fc6879b JM |
3320 | return NULL; |
3321 | } | |
81c85c06 JM |
3322 | res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data), |
3323 | res); | |
6fc6879b JM |
3324 | if (res < 0) { |
3325 | tls_show_errors(MSG_INFO, __func__, | |
3326 | "Handshake failed - BIO_read"); | |
3327 | if (BIO_reset(conn->ssl_out) < 0) { | |
3328 | tls_show_errors(MSG_INFO, __func__, | |
3329 | "BIO_reset failed"); | |
3330 | } | |
81c85c06 | 3331 | wpabuf_free(out_data); |
6fc6879b JM |
3332 | return NULL; |
3333 | } | |
81c85c06 | 3334 | wpabuf_put(out_data, res); |
6fc6879b JM |
3335 | |
3336 | return out_data; | |
3337 | } | |
3338 | ||
3339 | ||
81c85c06 JM |
3340 | static struct wpabuf * |
3341 | openssl_get_appl_data(struct tls_connection *conn, size_t max_len) | |
6fc6879b | 3342 | { |
81c85c06 | 3343 | struct wpabuf *appl_data; |
6fc6879b | 3344 | int res; |
6fc6879b | 3345 | |
81c85c06 JM |
3346 | appl_data = wpabuf_alloc(max_len + 100); |
3347 | if (appl_data == NULL) | |
6fc6879b | 3348 | return NULL; |
6fc6879b | 3349 | |
81c85c06 JM |
3350 | res = SSL_read(conn->ssl, wpabuf_mhead(appl_data), |
3351 | wpabuf_size(appl_data)); | |
3352 | if (res < 0) { | |
bf206cad | 3353 | int err = SSL_get_error(conn->ssl, res); |
81c85c06 JM |
3354 | if (err == SSL_ERROR_WANT_READ || |
3355 | err == SSL_ERROR_WANT_WRITE) { | |
3356 | wpa_printf(MSG_DEBUG, "SSL: No Application Data " | |
3357 | "included"); | |
3358 | } else { | |
6fc6879b | 3359 | tls_show_errors(MSG_INFO, __func__, |
81c85c06 JM |
3360 | "Failed to read possible " |
3361 | "Application Data"); | |
6fc6879b | 3362 | } |
81c85c06 | 3363 | wpabuf_free(appl_data); |
6fc6879b JM |
3364 | return NULL; |
3365 | } | |
81c85c06 JM |
3366 | |
3367 | wpabuf_put(appl_data, res); | |
3368 | wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished " | |
3369 | "message", appl_data); | |
3370 | ||
3371 | return appl_data; | |
3372 | } | |
3373 | ||
3374 | ||
3375 | static struct wpabuf * | |
3376 | openssl_connection_handshake(struct tls_connection *conn, | |
3377 | const struct wpabuf *in_data, | |
3378 | struct wpabuf **appl_data, int server) | |
3379 | { | |
3380 | struct wpabuf *out_data; | |
3381 | ||
3382 | if (appl_data) | |
3383 | *appl_data = NULL; | |
3384 | ||
3385 | out_data = openssl_handshake(conn, in_data, server); | |
3386 | if (out_data == NULL) | |
6fc6879b | 3387 | return NULL; |
bb52293e JM |
3388 | if (conn->invalid_hb_used) { |
3389 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
3390 | wpabuf_free(out_data); | |
3391 | return NULL; | |
3392 | } | |
81c85c06 | 3393 | |
a89beee5 JM |
3394 | if (SSL_is_init_finished(conn->ssl)) { |
3395 | wpa_printf(MSG_DEBUG, | |
3396 | "OpenSSL: Handshake finished - resumed=%d", | |
3397 | tls_connection_resumed(conn->ssl_ctx, conn)); | |
3398 | if (appl_data && in_data) | |
3399 | *appl_data = openssl_get_appl_data(conn, | |
3400 | wpabuf_len(in_data)); | |
3401 | } | |
81c85c06 | 3402 | |
bb52293e JM |
3403 | if (conn->invalid_hb_used) { |
3404 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
3405 | if (appl_data) { | |
3406 | wpabuf_free(*appl_data); | |
3407 | *appl_data = NULL; | |
3408 | } | |
3409 | wpabuf_free(out_data); | |
3410 | return NULL; | |
3411 | } | |
3412 | ||
6fc6879b JM |
3413 | return out_data; |
3414 | } | |
3415 | ||
3416 | ||
81c85c06 JM |
3417 | struct wpabuf * |
3418 | tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn, | |
3419 | const struct wpabuf *in_data, | |
3420 | struct wpabuf **appl_data) | |
3421 | { | |
3422 | return openssl_connection_handshake(conn, in_data, appl_data, 0); | |
3423 | } | |
3424 | ||
3425 | ||
3426 | struct wpabuf * tls_connection_server_handshake(void *tls_ctx, | |
3427 | struct tls_connection *conn, | |
3428 | const struct wpabuf *in_data, | |
3429 | struct wpabuf **appl_data) | |
3430 | { | |
3431 | return openssl_connection_handshake(conn, in_data, appl_data, 1); | |
3432 | } | |
3433 | ||
3434 | ||
3435 | struct wpabuf * tls_connection_encrypt(void *tls_ctx, | |
3436 | struct tls_connection *conn, | |
3437 | const struct wpabuf *in_data) | |
6fc6879b JM |
3438 | { |
3439 | int res; | |
81c85c06 | 3440 | struct wpabuf *buf; |
6fc6879b JM |
3441 | |
3442 | if (conn == NULL) | |
81c85c06 | 3443 | return NULL; |
6fc6879b JM |
3444 | |
3445 | /* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */ | |
3446 | if ((res = BIO_reset(conn->ssl_in)) < 0 || | |
3447 | (res = BIO_reset(conn->ssl_out)) < 0) { | |
3448 | tls_show_errors(MSG_INFO, __func__, "BIO_reset failed"); | |
81c85c06 | 3449 | return NULL; |
6fc6879b | 3450 | } |
81c85c06 | 3451 | res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data)); |
6fc6879b JM |
3452 | if (res < 0) { |
3453 | tls_show_errors(MSG_INFO, __func__, | |
3454 | "Encryption failed - SSL_write"); | |
81c85c06 | 3455 | return NULL; |
6fc6879b JM |
3456 | } |
3457 | ||
3458 | /* Read encrypted data to be sent to the server */ | |
81c85c06 JM |
3459 | buf = wpabuf_alloc(wpabuf_len(in_data) + 300); |
3460 | if (buf == NULL) | |
3461 | return NULL; | |
3462 | res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf)); | |
6fc6879b JM |
3463 | if (res < 0) { |
3464 | tls_show_errors(MSG_INFO, __func__, | |
3465 | "Encryption failed - BIO_read"); | |
81c85c06 JM |
3466 | wpabuf_free(buf); |
3467 | return NULL; | |
6fc6879b | 3468 | } |
81c85c06 | 3469 | wpabuf_put(buf, res); |
6fc6879b | 3470 | |
81c85c06 | 3471 | return buf; |
6fc6879b JM |
3472 | } |
3473 | ||
3474 | ||
81c85c06 JM |
3475 | struct wpabuf * tls_connection_decrypt(void *tls_ctx, |
3476 | struct tls_connection *conn, | |
3477 | const struct wpabuf *in_data) | |
6fc6879b JM |
3478 | { |
3479 | int res; | |
81c85c06 | 3480 | struct wpabuf *buf; |
6fc6879b JM |
3481 | |
3482 | /* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */ | |
81c85c06 JM |
3483 | res = BIO_write(conn->ssl_in, wpabuf_head(in_data), |
3484 | wpabuf_len(in_data)); | |
6fc6879b JM |
3485 | if (res < 0) { |
3486 | tls_show_errors(MSG_INFO, __func__, | |
3487 | "Decryption failed - BIO_write"); | |
81c85c06 | 3488 | return NULL; |
6fc6879b JM |
3489 | } |
3490 | if (BIO_reset(conn->ssl_out) < 0) { | |
3491 | tls_show_errors(MSG_INFO, __func__, "BIO_reset failed"); | |
81c85c06 | 3492 | return NULL; |
6fc6879b JM |
3493 | } |
3494 | ||
3495 | /* Read decrypted data for further processing */ | |
81c85c06 JM |
3496 | /* |
3497 | * Even though we try to disable TLS compression, it is possible that | |
3498 | * this cannot be done with all TLS libraries. Add extra buffer space | |
3499 | * to handle the possibility of the decrypted data being longer than | |
3500 | * input data. | |
3501 | */ | |
3502 | buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3); | |
3503 | if (buf == NULL) | |
3504 | return NULL; | |
3505 | res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf)); | |
6fc6879b JM |
3506 | if (res < 0) { |
3507 | tls_show_errors(MSG_INFO, __func__, | |
3508 | "Decryption failed - SSL_read"); | |
a86a7316 | 3509 | wpabuf_free(buf); |
81c85c06 | 3510 | return NULL; |
6fc6879b | 3511 | } |
81c85c06 | 3512 | wpabuf_put(buf, res); |
6fc6879b | 3513 | |
bb52293e JM |
3514 | if (conn->invalid_hb_used) { |
3515 | wpa_printf(MSG_INFO, "TLS: Heartbeat attack detected - do not send response"); | |
3516 | wpabuf_free(buf); | |
3517 | return NULL; | |
3518 | } | |
3519 | ||
81c85c06 | 3520 | return buf; |
6fc6879b JM |
3521 | } |
3522 | ||
3523 | ||
3524 | int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn) | |
3525 | { | |
db3168d4 | 3526 | return conn ? SSL_cache_hit(conn->ssl) : 0; |
6fc6879b JM |
3527 | } |
3528 | ||
3529 | ||
3530 | int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn, | |
3531 | u8 *ciphers) | |
3532 | { | |
750f5d99 | 3533 | char buf[500], *pos, *end; |
6fc6879b JM |
3534 | u8 *c; |
3535 | int ret; | |
3536 | ||
3537 | if (conn == NULL || conn->ssl == NULL || ciphers == NULL) | |
3538 | return -1; | |
3539 | ||
3540 | buf[0] = '\0'; | |
3541 | pos = buf; | |
3542 | end = pos + sizeof(buf); | |
3543 | ||
3544 | c = ciphers; | |
3545 | while (*c != TLS_CIPHER_NONE) { | |
3546 | const char *suite; | |
3547 | ||
3548 | switch (*c) { | |
3549 | case TLS_CIPHER_RC4_SHA: | |
3550 | suite = "RC4-SHA"; | |
3551 | break; | |
3552 | case TLS_CIPHER_AES128_SHA: | |
3553 | suite = "AES128-SHA"; | |
3554 | break; | |
3555 | case TLS_CIPHER_RSA_DHE_AES128_SHA: | |
3556 | suite = "DHE-RSA-AES128-SHA"; | |
3557 | break; | |
3558 | case TLS_CIPHER_ANON_DH_AES128_SHA: | |
3559 | suite = "ADH-AES128-SHA"; | |
3560 | break; | |
750f5d99 JM |
3561 | case TLS_CIPHER_RSA_DHE_AES256_SHA: |
3562 | suite = "DHE-RSA-AES256-SHA"; | |
3563 | break; | |
3564 | case TLS_CIPHER_AES256_SHA: | |
3565 | suite = "AES256-SHA"; | |
3566 | break; | |
6fc6879b JM |
3567 | default: |
3568 | wpa_printf(MSG_DEBUG, "TLS: Unsupported " | |
3569 | "cipher selection: %d", *c); | |
3570 | return -1; | |
3571 | } | |
3572 | ret = os_snprintf(pos, end - pos, ":%s", suite); | |
d85e1fc8 | 3573 | if (os_snprintf_error(end - pos, ret)) |
6fc6879b JM |
3574 | break; |
3575 | pos += ret; | |
3576 | ||
3577 | c++; | |
3578 | } | |
3579 | ||
3580 | wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1); | |
3581 | ||
36e82060 | 3582 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER) |
c34cd668 JM |
3583 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
3584 | if (os_strstr(buf, ":ADH-")) { | |
3585 | /* | |
3586 | * Need to drop to security level 0 to allow anonymous | |
3587 | * cipher suites for EAP-FAST. | |
3588 | */ | |
3589 | SSL_set_security_level(conn->ssl, 0); | |
3590 | } else if (SSL_get_security_level(conn->ssl) == 0) { | |
3591 | /* Force at least security level 1 */ | |
3592 | SSL_set_security_level(conn->ssl, 1); | |
3593 | } | |
3594 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ | |
3595 | #endif | |
3596 | ||
6fc6879b JM |
3597 | if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) { |
3598 | tls_show_errors(MSG_INFO, __func__, | |
3599 | "Cipher suite configuration failed"); | |
3600 | return -1; | |
3601 | } | |
3602 | ||
3603 | return 0; | |
3604 | } | |
3605 | ||
3606 | ||
fe1bf329 JM |
3607 | int tls_get_version(void *ssl_ctx, struct tls_connection *conn, |
3608 | char *buf, size_t buflen) | |
3609 | { | |
3610 | const char *name; | |
3611 | if (conn == NULL || conn->ssl == NULL) | |
3612 | return -1; | |
3613 | ||
3614 | name = SSL_get_version(conn->ssl); | |
3615 | if (name == NULL) | |
3616 | return -1; | |
3617 | ||
3618 | os_strlcpy(buf, name, buflen); | |
3619 | return 0; | |
3620 | } | |
3621 | ||
3622 | ||
6fc6879b JM |
3623 | int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn, |
3624 | char *buf, size_t buflen) | |
3625 | { | |
3626 | const char *name; | |
3627 | if (conn == NULL || conn->ssl == NULL) | |
3628 | return -1; | |
3629 | ||
3630 | name = SSL_get_cipher(conn->ssl); | |
3631 | if (name == NULL) | |
3632 | return -1; | |
3633 | ||
3634 | os_strlcpy(buf, name, buflen); | |
3635 | return 0; | |
3636 | } | |
3637 | ||
3638 | ||
3639 | int tls_connection_enable_workaround(void *ssl_ctx, | |
3640 | struct tls_connection *conn) | |
3641 | { | |
3642 | SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS); | |
3643 | ||
3644 | return 0; | |
3645 | } | |
3646 | ||
3647 | ||
1e5839e0 | 3648 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
6fc6879b JM |
3649 | /* ClientHello TLS extensions require a patch to openssl, so this function is |
3650 | * commented out unless explicitly needed for EAP-FAST in order to be able to | |
3651 | * build this file with unmodified openssl. */ | |
3652 | int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn, | |
3653 | int ext_type, const u8 *data, | |
3654 | size_t data_len) | |
3655 | { | |
0cf03892 | 3656 | if (conn == NULL || conn->ssl == NULL || ext_type != 35) |
6fc6879b JM |
3657 | return -1; |
3658 | ||
0cf03892 JM |
3659 | if (SSL_set_session_ticket_ext(conn->ssl, (void *) data, |
3660 | data_len) != 1) | |
3661 | return -1; | |
6fc6879b JM |
3662 | |
3663 | return 0; | |
3664 | } | |
1e5839e0 | 3665 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b JM |
3666 | |
3667 | ||
3668 | int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn) | |
3669 | { | |
3670 | if (conn == NULL) | |
3671 | return -1; | |
3672 | return conn->failed; | |
3673 | } | |
3674 | ||
3675 | ||
3676 | int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn) | |
3677 | { | |
3678 | if (conn == NULL) | |
3679 | return -1; | |
3680 | return conn->read_alerts; | |
3681 | } | |
3682 | ||
3683 | ||
3684 | int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn) | |
3685 | { | |
3686 | if (conn == NULL) | |
3687 | return -1; | |
3688 | return conn->write_alerts; | |
3689 | } | |
3690 | ||
3691 | ||
080585c0 JM |
3692 | #ifdef HAVE_OCSP |
3693 | ||
3694 | static void ocsp_debug_print_resp(OCSP_RESPONSE *rsp) | |
3695 | { | |
3696 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
080585c0 JM |
3697 | BIO *out; |
3698 | size_t rlen; | |
3699 | char *txt; | |
3700 | int res; | |
3701 | ||
3702 | if (wpa_debug_level > MSG_DEBUG) | |
3703 | return; | |
3704 | ||
3705 | out = BIO_new(BIO_s_mem()); | |
3706 | if (!out) | |
3707 | return; | |
3708 | ||
3709 | OCSP_RESPONSE_print(out, rsp, 0); | |
3710 | rlen = BIO_ctrl_pending(out); | |
3711 | txt = os_malloc(rlen + 1); | |
3712 | if (!txt) { | |
3713 | BIO_free(out); | |
3714 | return; | |
3715 | } | |
3716 | ||
3717 | res = BIO_read(out, txt, rlen); | |
3718 | if (res > 0) { | |
3719 | txt[res] = '\0'; | |
3720 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP Response\n%s", txt); | |
3721 | } | |
3722 | os_free(txt); | |
3723 | BIO_free(out); | |
3724 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
3725 | } | |
3726 | ||
3727 | ||
4eb3b76b JM |
3728 | static void debug_print_cert(X509 *cert, const char *title) |
3729 | { | |
3730 | #ifndef CONFIG_NO_STDOUT_DEBUG | |
3731 | BIO *out; | |
3732 | size_t rlen; | |
3733 | char *txt; | |
3734 | int res; | |
3735 | ||
3736 | if (wpa_debug_level > MSG_DEBUG) | |
3737 | return; | |
3738 | ||
3739 | out = BIO_new(BIO_s_mem()); | |
3740 | if (!out) | |
3741 | return; | |
3742 | ||
3743 | X509_print(out, cert); | |
3744 | rlen = BIO_ctrl_pending(out); | |
3745 | txt = os_malloc(rlen + 1); | |
3746 | if (!txt) { | |
3747 | BIO_free(out); | |
3748 | return; | |
3749 | } | |
3750 | ||
3751 | res = BIO_read(out, txt, rlen); | |
3752 | if (res > 0) { | |
3753 | txt[res] = '\0'; | |
3754 | wpa_printf(MSG_DEBUG, "OpenSSL: %s\n%s", title, txt); | |
3755 | } | |
3756 | os_free(txt); | |
3757 | ||
3758 | BIO_free(out); | |
3759 | #endif /* CONFIG_NO_STDOUT_DEBUG */ | |
3760 | } | |
3761 | ||
3762 | ||
080585c0 JM |
3763 | static int ocsp_resp_cb(SSL *s, void *arg) |
3764 | { | |
3765 | struct tls_connection *conn = arg; | |
3766 | const unsigned char *p; | |
3767 | int len, status, reason; | |
3768 | OCSP_RESPONSE *rsp; | |
3769 | OCSP_BASICRESP *basic; | |
3770 | OCSP_CERTID *id; | |
3771 | ASN1_GENERALIZEDTIME *produced_at, *this_update, *next_update; | |
6bf61fb2 JM |
3772 | X509_STORE *store; |
3773 | STACK_OF(X509) *certs = NULL; | |
080585c0 JM |
3774 | |
3775 | len = SSL_get_tlsext_status_ocsp_resp(s, &p); | |
3776 | if (!p) { | |
3777 | wpa_printf(MSG_DEBUG, "OpenSSL: No OCSP response received"); | |
3778 | return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1; | |
3779 | } | |
3780 | ||
3781 | wpa_hexdump(MSG_DEBUG, "OpenSSL: OCSP response", p, len); | |
3782 | ||
3783 | rsp = d2i_OCSP_RESPONSE(NULL, &p, len); | |
3784 | if (!rsp) { | |
3785 | wpa_printf(MSG_INFO, "OpenSSL: Failed to parse OCSP response"); | |
3786 | return 0; | |
3787 | } | |
3788 | ||
3789 | ocsp_debug_print_resp(rsp); | |
3790 | ||
3791 | status = OCSP_response_status(rsp); | |
3792 | if (status != OCSP_RESPONSE_STATUS_SUCCESSFUL) { | |
3793 | wpa_printf(MSG_INFO, "OpenSSL: OCSP responder error %d (%s)", | |
3794 | status, OCSP_response_status_str(status)); | |
3795 | return 0; | |
3796 | } | |
3797 | ||
3798 | basic = OCSP_response_get1_basic(rsp); | |
3799 | if (!basic) { | |
3800 | wpa_printf(MSG_INFO, "OpenSSL: Could not find BasicOCSPResponse"); | |
3801 | return 0; | |
3802 | } | |
3803 | ||
68ae4773 | 3804 | store = SSL_CTX_get_cert_store(conn->ssl_ctx); |
6bf61fb2 | 3805 | if (conn->peer_issuer) { |
4eb3b76b | 3806 | debug_print_cert(conn->peer_issuer, "Add OCSP issuer"); |
6bf61fb2 JM |
3807 | |
3808 | if (X509_STORE_add_cert(store, conn->peer_issuer) != 1) { | |
3809 | tls_show_errors(MSG_INFO, __func__, | |
58d405fc | 3810 | "OpenSSL: Could not add issuer to certificate store"); |
6bf61fb2 JM |
3811 | } |
3812 | certs = sk_X509_new_null(); | |
3813 | if (certs) { | |
3814 | X509 *cert; | |
3815 | cert = X509_dup(conn->peer_issuer); | |
3816 | if (cert && !sk_X509_push(certs, cert)) { | |
3817 | tls_show_errors( | |
3818 | MSG_INFO, __func__, | |
58d405fc | 3819 | "OpenSSL: Could not add issuer to OCSP responder trust store"); |
6bf61fb2 JM |
3820 | X509_free(cert); |
3821 | sk_X509_free(certs); | |
3822 | certs = NULL; | |
3823 | } | |
710dfb4e | 3824 | if (certs && conn->peer_issuer_issuer) { |
6bf61fb2 JM |
3825 | cert = X509_dup(conn->peer_issuer_issuer); |
3826 | if (cert && !sk_X509_push(certs, cert)) { | |
3827 | tls_show_errors( | |
3828 | MSG_INFO, __func__, | |
58d405fc | 3829 | "OpenSSL: Could not add issuer's issuer to OCSP responder trust store"); |
6bf61fb2 JM |
3830 | X509_free(cert); |
3831 | } | |
3832 | } | |
3833 | } | |
3834 | } | |
3835 | ||
3836 | status = OCSP_basic_verify(basic, certs, store, OCSP_TRUSTOTHER); | |
3837 | sk_X509_pop_free(certs, X509_free); | |
080585c0 JM |
3838 | if (status <= 0) { |
3839 | tls_show_errors(MSG_INFO, __func__, | |
3840 | "OpenSSL: OCSP response failed verification"); | |
3841 | OCSP_BASICRESP_free(basic); | |
3842 | OCSP_RESPONSE_free(rsp); | |
3843 | return 0; | |
3844 | } | |
3845 | ||
3846 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP response verification succeeded"); | |
3847 | ||
762c92a4 JM |
3848 | if (!conn->peer_cert) { |
3849 | wpa_printf(MSG_DEBUG, "OpenSSL: Peer certificate not available for OCSP status check"); | |
3850 | OCSP_BASICRESP_free(basic); | |
3851 | OCSP_RESPONSE_free(rsp); | |
3852 | return 0; | |
3853 | } | |
3854 | ||
3855 | if (!conn->peer_issuer) { | |
3856 | wpa_printf(MSG_DEBUG, "OpenSSL: Peer issuer certificate not available for OCSP status check"); | |
080585c0 JM |
3857 | OCSP_BASICRESP_free(basic); |
3858 | OCSP_RESPONSE_free(rsp); | |
3859 | return 0; | |
3860 | } | |
3861 | ||
3862 | id = OCSP_cert_to_id(NULL, conn->peer_cert, conn->peer_issuer); | |
3863 | if (!id) { | |
3864 | wpa_printf(MSG_DEBUG, "OpenSSL: Could not create OCSP certificate identifier"); | |
3865 | OCSP_BASICRESP_free(basic); | |
3866 | OCSP_RESPONSE_free(rsp); | |
3867 | return 0; | |
3868 | } | |
3869 | ||
3870 | if (!OCSP_resp_find_status(basic, id, &status, &reason, &produced_at, | |
3871 | &this_update, &next_update)) { | |
3872 | wpa_printf(MSG_INFO, "OpenSSL: Could not find current server certificate from OCSP response%s", | |
3873 | (conn->flags & TLS_CONN_REQUIRE_OCSP) ? "" : | |
3874 | " (OCSP not required)"); | |
d9a0f697 | 3875 | OCSP_CERTID_free(id); |
080585c0 JM |
3876 | OCSP_BASICRESP_free(basic); |
3877 | OCSP_RESPONSE_free(rsp); | |
3878 | return (conn->flags & TLS_CONN_REQUIRE_OCSP) ? 0 : 1; | |
3879 | } | |
d9a0f697 | 3880 | OCSP_CERTID_free(id); |
080585c0 JM |
3881 | |
3882 | if (!OCSP_check_validity(this_update, next_update, 5 * 60, -1)) { | |
3883 | tls_show_errors(MSG_INFO, __func__, | |
3884 | "OpenSSL: OCSP status times invalid"); | |
3885 | OCSP_BASICRESP_free(basic); | |
3886 | OCSP_RESPONSE_free(rsp); | |
3887 | return 0; | |
3888 | } | |
3889 | ||
3890 | OCSP_BASICRESP_free(basic); | |
3891 | OCSP_RESPONSE_free(rsp); | |
3892 | ||
3893 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status for server certificate: %s", | |
3894 | OCSP_cert_status_str(status)); | |
3895 | ||
3896 | if (status == V_OCSP_CERTSTATUS_GOOD) | |
3897 | return 1; | |
3898 | if (status == V_OCSP_CERTSTATUS_REVOKED) | |
3899 | return 0; | |
3900 | if (conn->flags & TLS_CONN_REQUIRE_OCSP) { | |
3901 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP required"); | |
3902 | return 0; | |
3903 | } | |
be7963b3 | 3904 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status unknown, but OCSP was not required, so allow connection to continue"); |
080585c0 JM |
3905 | return 1; |
3906 | } | |
3907 | ||
3908 | ||
3909 | static int ocsp_status_cb(SSL *s, void *arg) | |
3910 | { | |
3911 | char *tmp; | |
3912 | char *resp; | |
3913 | size_t len; | |
3914 | ||
3915 | if (tls_global->ocsp_stapling_response == NULL) { | |
3916 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - no response configured"); | |
3917 | return SSL_TLSEXT_ERR_OK; | |
3918 | } | |
3919 | ||
3920 | resp = os_readfile(tls_global->ocsp_stapling_response, &len); | |
3921 | if (resp == NULL) { | |
3922 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - could not read response file"); | |
3923 | /* TODO: Build OCSPResponse with responseStatus = internalError | |
3924 | */ | |
3925 | return SSL_TLSEXT_ERR_OK; | |
3926 | } | |
3927 | wpa_printf(MSG_DEBUG, "OpenSSL: OCSP status callback - send cached response"); | |
3928 | tmp = OPENSSL_malloc(len); | |
3929 | if (tmp == NULL) { | |
3930 | os_free(resp); | |
3931 | return SSL_TLSEXT_ERR_ALERT_FATAL; | |
3932 | } | |
3933 | ||
3934 | os_memcpy(tmp, resp, len); | |
3935 | os_free(resp); | |
3936 | SSL_set_tlsext_status_ocsp_resp(s, tmp, len); | |
3937 | ||
3938 | return SSL_TLSEXT_ERR_OK; | |
3939 | } | |
3940 | ||
3941 | #endif /* HAVE_OCSP */ | |
3942 | ||
3943 | ||
6fc6879b JM |
3944 | int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn, |
3945 | const struct tls_connection_params *params) | |
3946 | { | |
bd9b8b2b | 3947 | struct tls_data *data = tls_ctx; |
6fc6879b JM |
3948 | int ret; |
3949 | unsigned long err; | |
96955192 | 3950 | int can_pkcs11 = 0; |
01b0d1d5 DW |
3951 | const char *key_id = params->key_id; |
3952 | const char *cert_id = params->cert_id; | |
3953 | const char *ca_cert_id = params->ca_cert_id; | |
96955192 | 3954 | const char *engine_id = params->engine ? params->engine_id : NULL; |
6fc6879b JM |
3955 | |
3956 | if (conn == NULL) | |
3957 | return -1; | |
3958 | ||
d6b536f7 JM |
3959 | if (params->flags & TLS_CONN_REQUIRE_OCSP_ALL) { |
3960 | wpa_printf(MSG_INFO, | |
3961 | "OpenSSL: ocsp=3 not supported"); | |
3962 | return -1; | |
3963 | } | |
3964 | ||
01b0d1d5 | 3965 | /* |
96955192 DW |
3966 | * If the engine isn't explicitly configured, and any of the |
3967 | * cert/key fields are actually PKCS#11 URIs, then automatically | |
3968 | * use the PKCS#11 ENGINE. | |
01b0d1d5 | 3969 | */ |
96955192 DW |
3970 | if (!engine_id || os_strcmp(engine_id, "pkcs11") == 0) |
3971 | can_pkcs11 = 1; | |
3972 | ||
3973 | if (!key_id && params->private_key && can_pkcs11 && | |
3974 | os_strncmp(params->private_key, "pkcs11:", 7) == 0) { | |
3975 | can_pkcs11 = 2; | |
01b0d1d5 | 3976 | key_id = params->private_key; |
96955192 | 3977 | } |
01b0d1d5 | 3978 | |
96955192 DW |
3979 | if (!cert_id && params->client_cert && can_pkcs11 && |
3980 | os_strncmp(params->client_cert, "pkcs11:", 7) == 0) { | |
3981 | can_pkcs11 = 2; | |
01b0d1d5 | 3982 | cert_id = params->client_cert; |
96955192 | 3983 | } |
01b0d1d5 | 3984 | |
96955192 DW |
3985 | if (!ca_cert_id && params->ca_cert && can_pkcs11 && |
3986 | os_strncmp(params->ca_cert, "pkcs11:", 7) == 0) { | |
3987 | can_pkcs11 = 2; | |
01b0d1d5 | 3988 | ca_cert_id = params->ca_cert; |
96955192 DW |
3989 | } |
3990 | ||
3991 | /* If we need to automatically enable the PKCS#11 ENGINE, do so. */ | |
3992 | if (can_pkcs11 == 2 && !engine_id) | |
3993 | engine_id = "pkcs11"; | |
01b0d1d5 | 3994 | |
0f56057c | 3995 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
b70d508c | 3996 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
6a31a31d JM |
3997 | if (params->flags & TLS_CONN_EAP_FAST) { |
3998 | wpa_printf(MSG_DEBUG, | |
3999 | "OpenSSL: Use TLSv1_method() for EAP-FAST"); | |
4000 | if (SSL_set_ssl_method(conn->ssl, TLSv1_method()) != 1) { | |
4001 | tls_show_errors(MSG_INFO, __func__, | |
4002 | "Failed to set TLSv1_method() for EAP-FAST"); | |
4003 | return -1; | |
4004 | } | |
4005 | } | |
06836013 | 4006 | #endif |
0f56057c | 4007 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
d4913c58 | 4008 | |
6fc6879b JM |
4009 | while ((err = ERR_get_error())) { |
4010 | wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s", | |
4011 | __func__, ERR_error_string(err, NULL)); | |
4012 | } | |
4013 | ||
96955192 | 4014 | if (engine_id) { |
e59c91af | 4015 | wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine"); |
96955192 | 4016 | ret = tls_engine_init(conn, engine_id, params->pin, |
01b0d1d5 | 4017 | key_id, cert_id, ca_cert_id); |
e59c91af DS |
4018 | if (ret) |
4019 | return ret; | |
4020 | } | |
6fc6879b JM |
4021 | if (tls_connection_set_subject_match(conn, |
4022 | params->subject_match, | |
01f809c7 | 4023 | params->altsubject_match, |
cebee30f JM |
4024 | params->suffix_match, |
4025 | params->domain_match)) | |
6fc6879b | 4026 | return -1; |
e59c91af | 4027 | |
96955192 | 4028 | if (engine_id && ca_cert_id) { |
bd9b8b2b | 4029 | if (tls_connection_engine_ca_cert(data, conn, ca_cert_id)) |
e59c91af | 4030 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; |
bd9b8b2b | 4031 | } else if (tls_connection_ca_cert(data, conn, params->ca_cert, |
e59c91af DS |
4032 | params->ca_cert_blob, |
4033 | params->ca_cert_blob_len, | |
4034 | params->ca_path)) | |
6fc6879b | 4035 | return -1; |
e59c91af | 4036 | |
96955192 | 4037 | if (engine_id && cert_id) { |
01b0d1d5 | 4038 | if (tls_connection_engine_client_cert(conn, cert_id)) |
e59c91af DS |
4039 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; |
4040 | } else if (tls_connection_client_cert(conn, params->client_cert, | |
4041 | params->client_cert_blob, | |
4042 | params->client_cert_blob_len)) | |
6fc6879b JM |
4043 | return -1; |
4044 | ||
96955192 | 4045 | if (engine_id && key_id) { |
e59c91af | 4046 | wpa_printf(MSG_DEBUG, "TLS: Using private key from engine"); |
6fc6879b JM |
4047 | if (tls_connection_engine_private_key(conn)) |
4048 | return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED; | |
bd9b8b2b | 4049 | } else if (tls_connection_private_key(data, conn, |
6fc6879b JM |
4050 | params->private_key, |
4051 | params->private_key_passwd, | |
4052 | params->private_key_blob, | |
4053 | params->private_key_blob_len)) { | |
4054 | wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'", | |
4055 | params->private_key); | |
4056 | return -1; | |
4057 | } | |
4058 | ||
4059 | if (tls_connection_dh(conn, params->dh_file)) { | |
4060 | wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'", | |
4061 | params->dh_file); | |
4062 | return -1; | |
4063 | } | |
4064 | ||
b7328434 JM |
4065 | if (params->openssl_ciphers && |
4066 | SSL_set_cipher_list(conn->ssl, params->openssl_ciphers) != 1) { | |
4067 | wpa_printf(MSG_INFO, | |
4068 | "OpenSSL: Failed to set cipher string '%s'", | |
4069 | params->openssl_ciphers); | |
4070 | return -1; | |
4071 | } | |
4072 | ||
93bc6549 | 4073 | tls_set_conn_flags(conn->ssl, params->flags); |
e9a6f183 | 4074 | |
bdee6ca0 JM |
4075 | #ifdef OPENSSL_IS_BORINGSSL |
4076 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
4077 | SSL_enable_ocsp_stapling(conn->ssl); | |
4078 | } | |
4079 | #else /* OPENSSL_IS_BORINGSSL */ | |
080585c0 JM |
4080 | #ifdef HAVE_OCSP |
4081 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
bd9b8b2b | 4082 | SSL_CTX *ssl_ctx = data->ssl; |
080585c0 JM |
4083 | SSL_set_tlsext_status_type(conn->ssl, TLSEXT_STATUSTYPE_ocsp); |
4084 | SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_resp_cb); | |
4085 | SSL_CTX_set_tlsext_status_arg(ssl_ctx, conn); | |
4086 | } | |
355a5c8e JM |
4087 | #else /* HAVE_OCSP */ |
4088 | if (params->flags & TLS_CONN_REQUIRE_OCSP) { | |
4089 | wpa_printf(MSG_INFO, | |
4090 | "OpenSSL: No OCSP support included - reject configuration"); | |
4091 | return -1; | |
4092 | } | |
4093 | if (params->flags & TLS_CONN_REQUEST_OCSP) { | |
4094 | wpa_printf(MSG_DEBUG, | |
4095 | "OpenSSL: No OCSP support included - allow optional OCSP case to continue"); | |
4096 | } | |
080585c0 | 4097 | #endif /* HAVE_OCSP */ |
bdee6ca0 | 4098 | #endif /* OPENSSL_IS_BORINGSSL */ |
080585c0 | 4099 | |
235279e7 JM |
4100 | conn->flags = params->flags; |
4101 | ||
bd9b8b2b | 4102 | tls_get_errors(data); |
6fc6879b JM |
4103 | |
4104 | return 0; | |
4105 | } | |
4106 | ||
4107 | ||
4108 | int tls_global_set_params(void *tls_ctx, | |
4109 | const struct tls_connection_params *params) | |
4110 | { | |
bd9b8b2b JM |
4111 | struct tls_data *data = tls_ctx; |
4112 | SSL_CTX *ssl_ctx = data->ssl; | |
6fc6879b JM |
4113 | unsigned long err; |
4114 | ||
4115 | while ((err = ERR_get_error())) { | |
4116 | wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s", | |
4117 | __func__, ERR_error_string(err, NULL)); | |
4118 | } | |
4119 | ||
bd9b8b2b JM |
4120 | if (tls_global_ca_cert(data, params->ca_cert) || |
4121 | tls_global_client_cert(data, params->client_cert) || | |
4122 | tls_global_private_key(data, params->private_key, | |
f24b9797 | 4123 | params->private_key_passwd) || |
bd9b8b2b | 4124 | tls_global_dh(data, params->dh_file)) { |
f24b9797 | 4125 | wpa_printf(MSG_INFO, "TLS: Failed to set global parameters"); |
6fc6879b JM |
4126 | return -1; |
4127 | } | |
4128 | ||
b7328434 JM |
4129 | if (params->openssl_ciphers && |
4130 | SSL_CTX_set_cipher_list(ssl_ctx, params->openssl_ciphers) != 1) { | |
4131 | wpa_printf(MSG_INFO, | |
4132 | "OpenSSL: Failed to set cipher string '%s'", | |
4133 | params->openssl_ciphers); | |
4134 | return -1; | |
4135 | } | |
4136 | ||
e866f39f JM |
4137 | #ifdef SSL_OP_NO_TICKET |
4138 | if (params->flags & TLS_CONN_DISABLE_SESSION_TICKET) | |
4139 | SSL_CTX_set_options(ssl_ctx, SSL_OP_NO_TICKET); | |
4140 | else | |
4141 | SSL_CTX_clear_options(ssl_ctx, SSL_OP_NO_TICKET); | |
4142 | #endif /* SSL_OP_NO_TICKET */ | |
4143 | ||
080585c0 JM |
4144 | #ifdef HAVE_OCSP |
4145 | SSL_CTX_set_tlsext_status_cb(ssl_ctx, ocsp_status_cb); | |
4146 | SSL_CTX_set_tlsext_status_arg(ssl_ctx, ssl_ctx); | |
4147 | os_free(tls_global->ocsp_stapling_response); | |
4148 | if (params->ocsp_stapling_response) | |
4149 | tls_global->ocsp_stapling_response = | |
4150 | os_strdup(params->ocsp_stapling_response); | |
4151 | else | |
4152 | tls_global->ocsp_stapling_response = NULL; | |
4153 | #endif /* HAVE_OCSP */ | |
4154 | ||
6fc6879b JM |
4155 | return 0; |
4156 | } | |
4157 | ||
4158 | ||
1e5839e0 | 4159 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
6fc6879b JM |
4160 | /* Pre-shared secred requires a patch to openssl, so this function is |
4161 | * commented out unless explicitly needed for EAP-FAST in order to be able to | |
4162 | * build this file with unmodified openssl. */ | |
4163 | ||
587b0457 | 4164 | #if (defined(OPENSSL_IS_BORINGSSL) || OPENSSL_VERSION_NUMBER >= 0x10100000L) && !defined(LIBRESSL_VERSION_NUMBER) |
a8572960 AL |
4165 | static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len, |
4166 | STACK_OF(SSL_CIPHER) *peer_ciphers, | |
4167 | const SSL_CIPHER **cipher, void *arg) | |
4168 | #else /* OPENSSL_IS_BORINGSSL */ | |
6fc6879b JM |
4169 | static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len, |
4170 | STACK_OF(SSL_CIPHER) *peer_ciphers, | |
4171 | SSL_CIPHER **cipher, void *arg) | |
a8572960 | 4172 | #endif /* OPENSSL_IS_BORINGSSL */ |
6fc6879b JM |
4173 | { |
4174 | struct tls_connection *conn = arg; | |
4175 | int ret; | |
4176 | ||
36e82060 | 4177 | #if OPENSSL_VERSION_NUMBER < 0x10100000L || defined(LIBRESSL_VERSION_NUMBER) |
6fc6879b JM |
4178 | if (conn == NULL || conn->session_ticket_cb == NULL) |
4179 | return 0; | |
4180 | ||
4181 | ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx, | |
4182 | conn->session_ticket, | |
4183 | conn->session_ticket_len, | |
4184 | s->s3->client_random, | |
4185 | s->s3->server_random, secret); | |
4d2a1b4f JM |
4186 | #else |
4187 | unsigned char client_random[SSL3_RANDOM_SIZE]; | |
4188 | unsigned char server_random[SSL3_RANDOM_SIZE]; | |
4189 | ||
4190 | if (conn == NULL || conn->session_ticket_cb == NULL) | |
4191 | return 0; | |
4192 | ||
4193 | SSL_get_client_random(s, client_random, sizeof(client_random)); | |
4194 | SSL_get_server_random(s, server_random, sizeof(server_random)); | |
4195 | ||
4196 | ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx, | |
4197 | conn->session_ticket, | |
4198 | conn->session_ticket_len, | |
4199 | client_random, | |
4200 | server_random, secret); | |
4201 | #endif | |
4202 | ||
6fc6879b JM |
4203 | os_free(conn->session_ticket); |
4204 | conn->session_ticket = NULL; | |
4205 | ||
4206 | if (ret <= 0) | |
4207 | return 0; | |
4208 | ||
4209 | *secret_len = SSL_MAX_MASTER_KEY_LENGTH; | |
4210 | return 1; | |
4211 | } | |
4212 | ||
4213 | ||
0cf03892 JM |
4214 | static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data, |
4215 | int len, void *arg) | |
4216 | { | |
4217 | struct tls_connection *conn = arg; | |
4218 | ||
4219 | if (conn == NULL || conn->session_ticket_cb == NULL) | |
4220 | return 0; | |
4221 | ||
4222 | wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len); | |
4223 | ||
4224 | os_free(conn->session_ticket); | |
4225 | conn->session_ticket = NULL; | |
4226 | ||
4227 | wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket " | |
4228 | "extension", data, len); | |
4229 | ||
a1f11e34 | 4230 | conn->session_ticket = os_memdup(data, len); |
0cf03892 JM |
4231 | if (conn->session_ticket == NULL) |
4232 | return 0; | |
4233 | ||
0cf03892 JM |
4234 | conn->session_ticket_len = len; |
4235 | ||
4236 | return 1; | |
4237 | } | |
1e5839e0 | 4238 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b JM |
4239 | |
4240 | ||
4241 | int tls_connection_set_session_ticket_cb(void *tls_ctx, | |
4242 | struct tls_connection *conn, | |
4243 | tls_session_ticket_cb cb, | |
4244 | void *ctx) | |
4245 | { | |
1e5839e0 | 4246 | #if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST) |
6fc6879b JM |
4247 | conn->session_ticket_cb = cb; |
4248 | conn->session_ticket_cb_ctx = ctx; | |
4249 | ||
4250 | if (cb) { | |
4251 | if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb, | |
4252 | conn) != 1) | |
4253 | return -1; | |
0cf03892 JM |
4254 | SSL_set_session_ticket_ext_cb(conn->ssl, |
4255 | tls_session_ticket_ext_cb, conn); | |
6fc6879b JM |
4256 | } else { |
4257 | if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1) | |
4258 | return -1; | |
0cf03892 | 4259 | SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL); |
6fc6879b JM |
4260 | } |
4261 | ||
4262 | return 0; | |
1e5839e0 | 4263 | #else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b | 4264 | return -1; |
1e5839e0 | 4265 | #endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */ |
6fc6879b | 4266 | } |
a1651451 JM |
4267 | |
4268 | ||
4269 | int tls_get_library_version(char *buf, size_t buf_len) | |
4270 | { | |
587b0457 | 4271 | #if OPENSSL_VERSION_NUMBER >= 0x10100000L && !defined(LIBRESSL_VERSION_NUMBER) |
b34c623c JM |
4272 | return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s", |
4273 | OPENSSL_VERSION_TEXT, | |
4274 | OpenSSL_version(OPENSSL_VERSION)); | |
4275 | #else | |
a1651451 JM |
4276 | return os_snprintf(buf, buf_len, "OpenSSL build=%s run=%s", |
4277 | OPENSSL_VERSION_TEXT, | |
4278 | SSLeay_version(SSLEAY_VERSION)); | |
b34c623c | 4279 | #endif |
a1651451 | 4280 | } |
b3b8085a JM |
4281 | |
4282 | ||
4283 | void tls_connection_set_success_data(struct tls_connection *conn, | |
4284 | struct wpabuf *data) | |
4285 | { | |
acf36f31 JM |
4286 | SSL_SESSION *sess; |
4287 | struct wpabuf *old; | |
4288 | ||
4289 | if (tls_ex_idx_session < 0) | |
4290 | goto fail; | |
4291 | sess = SSL_get_session(conn->ssl); | |
4292 | if (!sess) | |
4293 | goto fail; | |
4294 | old = SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
4295 | if (old) { | |
4296 | wpa_printf(MSG_DEBUG, "OpenSSL: Replacing old success data %p", | |
4297 | old); | |
4298 | wpabuf_free(old); | |
4299 | } | |
4300 | if (SSL_SESSION_set_ex_data(sess, tls_ex_idx_session, data) != 1) | |
4301 | goto fail; | |
4302 | ||
4303 | wpa_printf(MSG_DEBUG, "OpenSSL: Stored success data %p", data); | |
4304 | conn->success_data = 1; | |
4305 | return; | |
4306 | ||
4307 | fail: | |
4308 | wpa_printf(MSG_INFO, "OpenSSL: Failed to store success data"); | |
4309 | wpabuf_free(data); | |
b3b8085a JM |
4310 | } |
4311 | ||
4312 | ||
4313 | void tls_connection_set_success_data_resumed(struct tls_connection *conn) | |
4314 | { | |
acf36f31 JM |
4315 | wpa_printf(MSG_DEBUG, |
4316 | "OpenSSL: Success data accepted for resumed session"); | |
4317 | conn->success_data = 1; | |
b3b8085a JM |
4318 | } |
4319 | ||
4320 | ||
4321 | const struct wpabuf * | |
4322 | tls_connection_get_success_data(struct tls_connection *conn) | |
4323 | { | |
acf36f31 JM |
4324 | SSL_SESSION *sess; |
4325 | ||
4326 | if (tls_ex_idx_session < 0 || | |
4327 | !(sess = SSL_get_session(conn->ssl))) | |
4328 | return NULL; | |
4329 | return SSL_SESSION_get_ex_data(sess, tls_ex_idx_session); | |
b3b8085a JM |
4330 | } |
4331 | ||
4332 | ||
4333 | void tls_connection_remove_session(struct tls_connection *conn) | |
4334 | { | |
acf36f31 JM |
4335 | SSL_SESSION *sess; |
4336 | ||
4337 | sess = SSL_get_session(conn->ssl); | |
4338 | if (!sess) | |
4339 | return; | |
4340 | ||
4341 | if (SSL_CTX_remove_session(conn->ssl_ctx, sess) != 1) | |
4342 | wpa_printf(MSG_DEBUG, | |
4343 | "OpenSSL: Session was not cached"); | |
4344 | else | |
4345 | wpa_printf(MSG_DEBUG, | |
4346 | "OpenSSL: Removed cached session to disable session resumption"); | |
b3b8085a | 4347 | } |