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19
: .pc/session-ticket.patch/src/crypto/tls_openssl.c
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- Committer: Package Import Robot
- Author(s): Marc Deslauriers
- Date: 2014-10-10 09:23:53 UTC
- mfrom: (18.1.2 precise-proposed)
- Revision ID: package-import@ubuntu.com-20141010092353-zo940kiyc1tqwcyi
Tags: 0.7.3-6ubuntu2.3
* SECURITY UPDATE: arbitrary command execution via unsanitized string
passed to action scripts by wpa_cli
- debian/patches/CVE-2014-3686.patch: added os_exec() helper to
src/utils/os.h, src/utils/os_unix.c, src/utils/os_win32.c,
use instead of system() in wpa_supplicant/wpa_cli.c.
- CVE-2014-3686
passed to action scripts by wpa_cli
- debian/patches/CVE-2014-3686.patch: added os_exec() helper to
src/utils/os.h, src/utils/os_unix.c, src/utils/os_win32.c,
use instead of system() in wpa_supplicant/wpa_cli.c.
- CVE-2014-3686
- files added:
- .pc/.quilt_patches
- .pc/0001-nl80211-Fix-UNSPEC-signal-quality-reporting.patch
- .pc/0001-nl80211-Fix-UNSPEC-signal-quality-reporting.patch/src
- .pc/0001-nl80211-Fix-UNSPEC-signal-quality-reporting.patch/src/drivers
- .pc/0001-pmkokc-Set-portValid-TRUE-on-association-for-driver-based-4.patch
- .pc/0001-pmkokc-Set-portValid-TRUE-on-association-for-driver-based-4.patch/wpa_supplicant
- .pc/0001-sme-fix-retry-after-auth-assoc-timeout-failure.patch
- .pc/0001-sme-fix-retry-after-auth-assoc-timeout-failure.patch/wpa_supplicant
- .pc/0002-pmkokc-Clear-WPA-and-EAPOL-state-machine-config-pointer-on-.patch
- .pc/0002-pmkokc-Clear-WPA-and-EAPOL-state-machine-config-pointer-on-.patch/wpa_supplicant
- .pc/0002-sme-optimize-recovery-from-common-load-balancing-mechanisms.patch
- .pc/0002-sme-optimize-recovery-from-common-load-balancing-mechanisms.patch/wpa_supplicant
- .pc/0003-pmkokc-Clear-driver-PMKSA-cache-entry-on-PMKSA-cache-expira.patch
- .pc/0003-pmkokc-Clear-driver-PMKSA-cache-entry-on-PMKSA-cache-expira.patch/src
- .pc/0003-pmkokc-Clear-driver-PMKSA-cache-entry-on-PMKSA-cache-expira.patch/src/rsn_supp
- .pc/0003-sme-blacklist-bss-on-first-failure-if-only-a-single-network-is-enabled.patch
- .pc/0003-sme-blacklist-bss-on-first-failure-if-only-a-single-network-is-enabled.patch/wpa_supplicant
- .pc/0004-pmkokc-Flush-PMKSA-cache-entries-and-invalidate-EAP-state-o.patch
- .pc/0004-pmkokc-Flush-PMKSA-cache-entries-and-invalidate-EAP-state-o.patch/src
- .pc/0004-pmkokc-Flush-PMKSA-cache-entries-and-invalidate-EAP-state-o.patch/src/rsn_supp
- .pc/0004-pmkokc-Flush-PMKSA-cache-entries-and-invalidate-EAP-state-o.patch/wpa_supplicant
- .pc/0004-sme-extend-load-balancing-optimization-in-bss-blacklisting.patch
- .pc/0004-sme-extend-load-balancing-optimization-in-bss-blacklisting.patch/wpa_supplicant
- .pc/0005-pmkokc-Fix-proactive_key_caching-configuration-to-WPA-code.patch
- .pc/0005-pmkokc-Fix-proactive_key_caching-configuration-to-WPA-code.patch/wpa_supplicant
- .pc/0005-pmkokc-Fix-proactive_key_caching-configuration-to-WPA-code.patch/wpa_supplicant/wpas_glue.c
- .pc/0005-sme-optimize-recovery-from-association-command-failures.patch
- .pc/0005-sme-optimize-recovery-from-association-command-failures.patch/wpa_supplicant
- .pc/0006-pmkokc-RSN-Add-a-debug-message-when-considing-addition-of-O.patch
- .pc/0006-pmkokc-RSN-Add-a-debug-message-when-considing-addition-of-O.patch/src
- .pc/0006-pmkokc-RSN-Add-a-debug-message-when-considing-addition-of-O.patch/src/rsn_supp
- .pc/0006-sme-add-timers-for-authentication-and-association.patch
- .pc/0006-sme-add-timers-for-authentication-and-association.patch/wpa_supplicant
- .pc/0007-pmkokc-Clear-OKC-based-PMKSA-caching-entries-if-PMK-is-chan.patch
- .pc/0007-pmkokc-Clear-OKC-based-PMKSA-caching-entries-if-PMK-is-chan.patch/src
- .pc/0007-pmkokc-Clear-OKC-based-PMKSA-caching-entries-if-PMK-is-chan.patch/src/rsn_supp
- .pc/0007-sme-nl80211-set-cipher-suites.patch
- .pc/0007-sme-nl80211-set-cipher-suites.patch/src
- .pc/0007-sme-nl80211-set-cipher-suites.patch/src/drivers
- .pc/0007-sme-nl80211-set-cipher-suites.patch/wpa_supplicant
- .pc/0008-pmkokc-Move-wpa_sm_remove_pmkid-call-to-PMKSA-cache-entry-f.patch
- .pc/0008-pmkokc-Move-wpa_sm_remove_pmkid-call-to-PMKSA-cache-entry-f.patch/src
- .pc/0008-pmkokc-Move-wpa_sm_remove_pmkid-call-to-PMKSA-cache-entry-f.patch/src/rsn_supp
- .pc/0009-pmkokc-Use-PMKSA-cache-entries-with-only-a-single-network-c.patch
- .pc/0009-pmkokc-Use-PMKSA-cache-entries-with-only-a-single-network-c.patch/src
- .pc/0009-pmkokc-Use-PMKSA-cache-entries-with-only-a-single-network-c.patch/src/rsn_supp
- .pc/0009-pmkokc-Use-PMKSA-cache-entries-with-only-a-single-network-c.patch/wpa_supplicant
- .pc/0010-pmkokc-PMKSA-Do-not-evict-active-cache-entry-when-adding-ne.patch
- .pc/0010-pmkokc-PMKSA-Do-not-evict-active-cache-entry-when-adding-ne.patch/src
- .pc/0010-pmkokc-PMKSA-Do-not-evict-active-cache-entry-when-adding-ne.patch/src/rsn_supp
- .pc/0011-pmkokc-PMKSA-Set-cur_pmksa-pointer-during-initial-associati.patch
- .pc/0011-pmkokc-PMKSA-Set-cur_pmksa-pointer-during-initial-associati.patch/src
- .pc/0011-pmkokc-PMKSA-Set-cur_pmksa-pointer-during-initial-associati.patch/src/rsn_supp
- .pc/0012-pmkokc-PMKSA-make-deauthentication-due-to-cache-entry-remov.patch
- .pc/0012-pmkokc-PMKSA-make-deauthentication-due-to-cache-entry-remov.patch/src
- .pc/0012-pmkokc-PMKSA-make-deauthentication-due-to-cache-entry-remov.patch/src/rsn_supp
- .pc/0013-pmkokc-PMKSA-update-current-cache-entry-due-to-association-.patch
- .pc/0013-pmkokc-PMKSA-update-current-cache-entry-due-to-association-.patch/src
- .pc/0013-pmkokc-PMKSA-update-current-cache-entry-due-to-association-.patch/src/rsn_supp
- .pc/0013-pmkokc-PMKSA-update-current-cache-entry-due-to-association-.patch/wpa_supplicant
- .pc/0013-pmkokc-PMKSA-update-current-cache-entry-due-to-association-.patch/wpa_supplicant/ibss_rsn.c
- .pc/0013-pmkokc-PMKSA-update-current-cache-entry-due-to-association-.patch/wpa_supplicant/tests
- .pc/CVE-2014-3686.patch
- .pc/CVE-2014-3686.patch/src
- .pc/CVE-2014-3686.patch/src/utils
- .pc/CVE-2014-3686.patch/wpa_supplicant
- .pc/force-enable-okc.patch
- .pc/force-enable-okc.patch/wpa_supplicant
- .pc/less-aggressive-roaming.patch
- .pc/less-aggressive-roaming.patch/wpa_supplicant
- .pc/session-ticket.patch
- .pc/session-ticket.patch/src
- .pc/session-ticket.patch/src/crypto
- .pc/wpa_supplicant-assoc-timeout.patch
- .pc/wpa_supplicant-assoc-timeout.patch/wpa_supplicant
- .pc/wpa_supplicant-dbus-null-error.patch
- .pc/wpa_supplicant-dbus-null-error.patch/wpa_supplicant
- .pc/wpa_supplicant-dbus-null-error.patch/wpa_supplicant/dbus
- .pc/wpa_supplicant-squelch-driver-disconnect-spam.patch
- .pc/wpa_supplicant-squelch-driver-disconnect-spam.patch/wpa_supplicant
- files modified:
- .pc/applied-patches
added
removed
.pc/session-ticket.patch/src/crypto/tls_openssl.c
1
/*
2
* SSL/TLS interface functions for OpenSSL
3
* Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi>
4
*
5
* This program is free software; you can redistribute it and/or modify
6
* it under the terms of the GNU General Public License version 2 as
7
* published by the Free Software Foundation.
8
*
9
* Alternatively, this software may be distributed under the terms of BSD
10
* license.
11
*
12
* See README and COPYING for more details.
13
*/
14
15
#include "includes.h"
16
17
#ifndef CONFIG_SMARTCARD
18
#ifndef OPENSSL_NO_ENGINE
19
#define OPENSSL_NO_ENGINE
20
#endif
21
#endif
22
23
#include <openssl/ssl.h>
24
#include <openssl/err.h>
25
#include <openssl/pkcs12.h>
26
#include <openssl/x509v3.h>
27
#ifndef OPENSSL_NO_ENGINE
28
#include <openssl/engine.h>
29
#endif /* OPENSSL_NO_ENGINE */
30
31
#include "common.h"
32
#include "crypto.h"
33
#include "tls.h"
34
35
#if OPENSSL_VERSION_NUMBER >= 0x0090800fL
36
#define OPENSSL_d2i_TYPE const unsigned char **
37
#else
38
#define OPENSSL_d2i_TYPE unsigned char **
39
#endif
40
41
#ifdef SSL_F_SSL_SET_SESSION_TICKET_EXT
42
#ifdef SSL_OP_NO_TICKET
43
/*
44
* Session ticket override patch was merged into OpenSSL 0.9.9 tree on
45
* 2008-11-15. This version uses a bit different API compared to the old patch.
46
*/
47
#define CONFIG_OPENSSL_TICKET_OVERRIDE
48
#endif
49
#endif
50
51
static int tls_openssl_ref_count = 0;
52
53
struct tls_global {
54
void (*event_cb)(void *ctx, enum tls_event ev,
55
union tls_event_data *data);
56
void *cb_ctx;
57
};
58
59
static struct tls_global *tls_global = NULL;
60
61
62
struct tls_connection {
63
SSL *ssl;
64
BIO *ssl_in, *ssl_out;
65
#ifndef OPENSSL_NO_ENGINE
66
ENGINE *engine; /* functional reference to the engine */
67
EVP_PKEY *private_key; /* the private key if using engine */
68
#endif /* OPENSSL_NO_ENGINE */
69
char *subject_match, *altsubject_match;
70
int read_alerts, write_alerts, failed;
71
72
tls_session_ticket_cb session_ticket_cb;
73
void *session_ticket_cb_ctx;
74
75
/* SessionTicket received from OpenSSL hello_extension_cb (server) */
76
u8 *session_ticket;
77
size_t session_ticket_len;
78
79
unsigned int ca_cert_verify:1;
80
unsigned int cert_probe:1;
81
unsigned int server_cert_only:1;
82
83
u8 srv_cert_hash[32];
84
};
85
86
87
#ifdef CONFIG_NO_STDOUT_DEBUG
88
89
static void _tls_show_errors(void)
90
{
91
unsigned long err;
92
93
while ((err = ERR_get_error())) {
94
/* Just ignore the errors, since stdout is disabled */
95
}
96
}
97
#define tls_show_errors(l, f, t) _tls_show_errors()
98
99
#else /* CONFIG_NO_STDOUT_DEBUG */
100
101
static void tls_show_errors(int level, const char *func, const char *txt)
102
{
103
unsigned long err;
104
105
wpa_printf(level, "OpenSSL: %s - %s %s",
106
func, txt, ERR_error_string(ERR_get_error(), NULL));
107
108
while ((err = ERR_get_error())) {
109
wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
110
ERR_error_string(err, NULL));
111
}
112
}
113
114
#endif /* CONFIG_NO_STDOUT_DEBUG */
115
116
117
#ifdef CONFIG_NATIVE_WINDOWS
118
119
/* Windows CryptoAPI and access to certificate stores */
120
#include <wincrypt.h>
121
122
#ifdef __MINGW32_VERSION
123
/*
124
* MinGW does not yet include all the needed definitions for CryptoAPI, so
125
* define here whatever extra is needed.
126
*/
127
#define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
128
#define CERT_STORE_READONLY_FLAG 0x00008000
129
#define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
130
131
#endif /* __MINGW32_VERSION */
132
133
134
struct cryptoapi_rsa_data {
135
const CERT_CONTEXT *cert;
136
HCRYPTPROV crypt_prov;
137
DWORD key_spec;
138
BOOL free_crypt_prov;
139
};
140
141
142
static void cryptoapi_error(const char *msg)
143
{
144
wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
145
msg, (unsigned int) GetLastError());
146
}
147
148
149
static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
150
unsigned char *to, RSA *rsa, int padding)
151
{
152
wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
153
return 0;
154
}
155
156
157
static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
158
unsigned char *to, RSA *rsa, int padding)
159
{
160
wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
161
return 0;
162
}
163
164
165
static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
166
unsigned char *to, RSA *rsa, int padding)
167
{
168
struct cryptoapi_rsa_data *priv =
169
(struct cryptoapi_rsa_data *) rsa->meth->app_data;
170
HCRYPTHASH hash;
171
DWORD hash_size, len, i;
172
unsigned char *buf = NULL;
173
int ret = 0;
174
175
if (priv == NULL) {
176
RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
177
ERR_R_PASSED_NULL_PARAMETER);
178
return 0;
179
}
180
181
if (padding != RSA_PKCS1_PADDING) {
182
RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
183
RSA_R_UNKNOWN_PADDING_TYPE);
184
return 0;
185
}
186
187
if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
188
wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
189
__func__);
190
RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
191
RSA_R_INVALID_MESSAGE_LENGTH);
192
return 0;
193
}
194
195
if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
196
{
197
cryptoapi_error("CryptCreateHash failed");
198
return 0;
199
}
200
201
len = sizeof(hash_size);
202
if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
203
0)) {
204
cryptoapi_error("CryptGetHashParam failed");
205
goto err;
206
}
207
208
if ((int) hash_size != flen) {
209
wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
210
(unsigned) hash_size, flen);
211
RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
212
RSA_R_INVALID_MESSAGE_LENGTH);
213
goto err;
214
}
215
if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
216
cryptoapi_error("CryptSetHashParam failed");
217
goto err;
218
}
219
220
len = RSA_size(rsa);
221
buf = os_malloc(len);
222
if (buf == NULL) {
223
RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
224
goto err;
225
}
226
227
if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
228
cryptoapi_error("CryptSignHash failed");
229
goto err;
230
}
231
232
for (i = 0; i < len; i++)
233
to[i] = buf[len - i - 1];
234
ret = len;
235
236
err:
237
os_free(buf);
238
CryptDestroyHash(hash);
239
240
return ret;
241
}
242
243
244
static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
245
unsigned char *to, RSA *rsa, int padding)
246
{
247
wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
248
return 0;
249
}
250
251
252
static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
253
{
254
if (priv == NULL)
255
return;
256
if (priv->crypt_prov && priv->free_crypt_prov)
257
CryptReleaseContext(priv->crypt_prov, 0);
258
if (priv->cert)
259
CertFreeCertificateContext(priv->cert);
260
os_free(priv);
261
}
262
263
264
static int cryptoapi_finish(RSA *rsa)
265
{
266
cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
267
os_free((void *) rsa->meth);
268
rsa->meth = NULL;
269
return 1;
270
}
271
272
273
static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
274
{
275
HCERTSTORE cs;
276
const CERT_CONTEXT *ret = NULL;
277
278
cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
279
store | CERT_STORE_OPEN_EXISTING_FLAG |
280
CERT_STORE_READONLY_FLAG, L"MY");
281
if (cs == NULL) {
282
cryptoapi_error("Failed to open 'My system store'");
283
return NULL;
284
}
285
286
if (strncmp(name, "cert://", 7) == 0) {
287
unsigned short wbuf[255];
288
MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
289
ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
290
PKCS_7_ASN_ENCODING,
291
0, CERT_FIND_SUBJECT_STR,
292
wbuf, NULL);
293
} else if (strncmp(name, "hash://", 7) == 0) {
294
CRYPT_HASH_BLOB blob;
295
int len;
296
const char *hash = name + 7;
297
unsigned char *buf;
298
299
len = os_strlen(hash) / 2;
300
buf = os_malloc(len);
301
if (buf && hexstr2bin(hash, buf, len) == 0) {
302
blob.cbData = len;
303
blob.pbData = buf;
304
ret = CertFindCertificateInStore(cs,
305
X509_ASN_ENCODING |
306
PKCS_7_ASN_ENCODING,
307
0, CERT_FIND_HASH,
308
&blob, NULL);
309
}
310
os_free(buf);
311
}
312
313
CertCloseStore(cs, 0);
314
315
return ret;
316
}
317
318
319
static int tls_cryptoapi_cert(SSL *ssl, const char *name)
320
{
321
X509 *cert = NULL;
322
RSA *rsa = NULL, *pub_rsa;
323
struct cryptoapi_rsa_data *priv;
324
RSA_METHOD *rsa_meth;
325
326
if (name == NULL ||
327
(strncmp(name, "cert://", 7) != 0 &&
328
strncmp(name, "hash://", 7) != 0))
329
return -1;
330
331
priv = os_zalloc(sizeof(*priv));
332
rsa_meth = os_zalloc(sizeof(*rsa_meth));
333
if (priv == NULL || rsa_meth == NULL) {
334
wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
335
"for CryptoAPI RSA method");
336
os_free(priv);
337
os_free(rsa_meth);
338
return -1;
339
}
340
341
priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
342
if (priv->cert == NULL) {
343
priv->cert = cryptoapi_find_cert(
344
name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
345
}
346
if (priv->cert == NULL) {
347
wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
348
"'%s'", name);
349
goto err;
350
}
351
352
cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &priv->cert->pbCertEncoded,
353
priv->cert->cbCertEncoded);
354
if (cert == NULL) {
355
wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
356
"encoding");
357
goto err;
358
}
359
360
if (!CryptAcquireCertificatePrivateKey(priv->cert,
361
CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
362
NULL, &priv->crypt_prov,
363
&priv->key_spec,
364
&priv->free_crypt_prov)) {
365
cryptoapi_error("Failed to acquire a private key for the "
366
"certificate");
367
goto err;
368
}
369
370
rsa_meth->name = "Microsoft CryptoAPI RSA Method";
371
rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
372
rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
373
rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
374
rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
375
rsa_meth->finish = cryptoapi_finish;
376
rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
377
rsa_meth->app_data = (char *) priv;
378
379
rsa = RSA_new();
380
if (rsa == NULL) {
381
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
382
ERR_R_MALLOC_FAILURE);
383
goto err;
384
}
385
386
if (!SSL_use_certificate(ssl, cert)) {
387
RSA_free(rsa);
388
rsa = NULL;
389
goto err;
390
}
391
pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
392
X509_free(cert);
393
cert = NULL;
394
395
rsa->n = BN_dup(pub_rsa->n);
396
rsa->e = BN_dup(pub_rsa->e);
397
if (!RSA_set_method(rsa, rsa_meth))
398
goto err;
399
400
if (!SSL_use_RSAPrivateKey(ssl, rsa))
401
goto err;
402
RSA_free(rsa);
403
404
return 0;
405
406
err:
407
if (cert)
408
X509_free(cert);
409
if (rsa)
410
RSA_free(rsa);
411
else {
412
os_free(rsa_meth);
413
cryptoapi_free_data(priv);
414
}
415
return -1;
416
}
417
418
419
static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
420
{
421
HCERTSTORE cs;
422
PCCERT_CONTEXT ctx = NULL;
423
X509 *cert;
424
char buf[128];
425
const char *store;
426
#ifdef UNICODE
427
WCHAR *wstore;
428
#endif /* UNICODE */
429
430
if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
431
return -1;
432
433
store = name + 13;
434
#ifdef UNICODE
435
wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
436
if (wstore == NULL)
437
return -1;
438
wsprintf(wstore, L"%S", store);
439
cs = CertOpenSystemStore(0, wstore);
440
os_free(wstore);
441
#else /* UNICODE */
442
cs = CertOpenSystemStore(0, store);
443
#endif /* UNICODE */
444
if (cs == NULL) {
445
wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
446
"'%s': error=%d", __func__, store,
447
(int) GetLastError());
448
return -1;
449
}
450
451
while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
452
cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &ctx->pbCertEncoded,
453
ctx->cbCertEncoded);
454
if (cert == NULL) {
455
wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
456
"X509 DER encoding for CA cert");
457
continue;
458
}
459
460
X509_NAME_oneline(X509_get_subject_name(cert), buf,
461
sizeof(buf));
462
wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
463
"system certificate store: subject='%s'", buf);
464
465
if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
466
tls_show_errors(MSG_WARNING, __func__,
467
"Failed to add ca_cert to OpenSSL "
468
"certificate store");
469
}
470
471
X509_free(cert);
472
}
473
474
if (!CertCloseStore(cs, 0)) {
475
wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
476
"'%s': error=%d", __func__, name + 13,
477
(int) GetLastError());
478
}
479
480
return 0;
481
}
482
483
484
#else /* CONFIG_NATIVE_WINDOWS */
485
486
static int tls_cryptoapi_cert(SSL *ssl, const char *name)
487
{
488
return -1;
489
}
490
491
#endif /* CONFIG_NATIVE_WINDOWS */
492
493
494
static void ssl_info_cb(const SSL *ssl, int where, int ret)
495
{
496
const char *str;
497
int w;
498
499
wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
500
w = where & ~SSL_ST_MASK;
501
if (w & SSL_ST_CONNECT)
502
str = "SSL_connect";
503
else if (w & SSL_ST_ACCEPT)
504
str = "SSL_accept";
505
else
506
str = "undefined";
507
508
if (where & SSL_CB_LOOP) {
509
wpa_printf(MSG_DEBUG, "SSL: %s:%s",
510
str, SSL_state_string_long(ssl));
511
} else if (where & SSL_CB_ALERT) {
512
wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
513
where & SSL_CB_READ ?
514
"read (remote end reported an error)" :
515
"write (local SSL3 detected an error)",
516
SSL_alert_type_string_long(ret),
517
SSL_alert_desc_string_long(ret));
518
if ((ret >> 8) == SSL3_AL_FATAL) {
519
struct tls_connection *conn =
520
SSL_get_app_data((SSL *) ssl);
521
if (where & SSL_CB_READ)
522
conn->read_alerts++;
523
else
524
conn->write_alerts++;
525
}
526
} else if (where & SSL_CB_EXIT && ret <= 0) {
527
wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
528
str, ret == 0 ? "failed" : "error",
529
SSL_state_string_long(ssl));
530
}
531
}
532
533
534
#ifndef OPENSSL_NO_ENGINE
535
/**
536
* tls_engine_load_dynamic_generic - load any openssl engine
537
* @pre: an array of commands and values that load an engine initialized
538
* in the engine specific function
539
* @post: an array of commands and values that initialize an already loaded
540
* engine (or %NULL if not required)
541
* @id: the engine id of the engine to load (only required if post is not %NULL
542
*
543
* This function is a generic function that loads any openssl engine.
544
*
545
* Returns: 0 on success, -1 on failure
546
*/
547
static int tls_engine_load_dynamic_generic(const char *pre[],
548
const char *post[], const char *id)
549
{
550
ENGINE *engine;
551
const char *dynamic_id = "dynamic";
552
553
engine = ENGINE_by_id(id);
554
if (engine) {
555
ENGINE_free(engine);
556
wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
557
"available", id);
558
return 0;
559
}
560
ERR_clear_error();
561
562
engine = ENGINE_by_id(dynamic_id);
563
if (engine == NULL) {
564
wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
565
dynamic_id,
566
ERR_error_string(ERR_get_error(), NULL));
567
return -1;
568
}
569
570
/* Perform the pre commands. This will load the engine. */
571
while (pre && pre[0]) {
572
wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
573
if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
574
wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
575
"%s %s [%s]", pre[0], pre[1],
576
ERR_error_string(ERR_get_error(), NULL));
577
ENGINE_free(engine);
578
return -1;
579
}
580
pre += 2;
581
}
582
583
/*
584
* Free the reference to the "dynamic" engine. The loaded engine can
585
* now be looked up using ENGINE_by_id().
586
*/
587
ENGINE_free(engine);
588
589
engine = ENGINE_by_id(id);
590
if (engine == NULL) {
591
wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
592
id, ERR_error_string(ERR_get_error(), NULL));
593
return -1;
594
}
595
596
while (post && post[0]) {
597
wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
598
if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
599
wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
600
" %s %s [%s]", post[0], post[1],
601
ERR_error_string(ERR_get_error(), NULL));
602
ENGINE_remove(engine);
603
ENGINE_free(engine);
604
return -1;
605
}
606
post += 2;
607
}
608
ENGINE_free(engine);
609
610
return 0;
611
}
612
613
614
/**
615
* tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
616
* @pkcs11_so_path: pksc11_so_path from the configuration
617
* @pcks11_module_path: pkcs11_module_path from the configuration
618
*/
619
static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
620
const char *pkcs11_module_path)
621
{
622
char *engine_id = "pkcs11";
623
const char *pre_cmd[] = {
624
"SO_PATH", NULL /* pkcs11_so_path */,
625
"ID", NULL /* engine_id */,
626
"LIST_ADD", "1",
627
/* "NO_VCHECK", "1", */
628
"LOAD", NULL,
629
NULL, NULL
630
};
631
const char *post_cmd[] = {
632
"MODULE_PATH", NULL /* pkcs11_module_path */,
633
NULL, NULL
634
};
635
636
if (!pkcs11_so_path || !pkcs11_module_path)
637
return 0;
638
639
pre_cmd[1] = pkcs11_so_path;
640
pre_cmd[3] = engine_id;
641
post_cmd[1] = pkcs11_module_path;
642
643
wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
644
pkcs11_so_path);
645
646
return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
647
}
648
649
650
/**
651
* tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
652
* @opensc_so_path: opensc_so_path from the configuration
653
*/
654
static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
655
{
656
char *engine_id = "opensc";
657
const char *pre_cmd[] = {
658
"SO_PATH", NULL /* opensc_so_path */,
659
"ID", NULL /* engine_id */,
660
"LIST_ADD", "1",
661
"LOAD", NULL,
662
NULL, NULL
663
};
664
665
if (!opensc_so_path)
666
return 0;
667
668
pre_cmd[1] = opensc_so_path;
669
pre_cmd[3] = engine_id;
670
671
wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
672
opensc_so_path);
673
674
return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
675
}
676
#endif /* OPENSSL_NO_ENGINE */
677
678
679
void * tls_init(const struct tls_config *conf)
680
{
681
SSL_CTX *ssl;
682
683
if (tls_openssl_ref_count == 0) {
684
tls_global = os_zalloc(sizeof(*tls_global));
685
if (tls_global == NULL)
686
return NULL;
687
if (conf) {
688
tls_global->event_cb = conf->event_cb;
689
tls_global->cb_ctx = conf->cb_ctx;
690
}
691
692
#ifdef CONFIG_FIPS
693
#ifdef OPENSSL_FIPS
694
if (conf && conf->fips_mode) {
695
if (!FIPS_mode_set(1)) {
696
wpa_printf(MSG_ERROR, "Failed to enable FIPS "
697
"mode");
698
ERR_load_crypto_strings();
699
ERR_print_errors_fp(stderr);
700
return NULL;
701
} else
702
wpa_printf(MSG_INFO, "Running in FIPS mode");
703
}
704
#else /* OPENSSL_FIPS */
705
if (conf && conf->fips_mode) {
706
wpa_printf(MSG_ERROR, "FIPS mode requested, but not "
707
"supported");
708
return NULL;
709
}
710
#endif /* OPENSSL_FIPS */
711
#endif /* CONFIG_FIPS */
712
SSL_load_error_strings();
713
SSL_library_init();
714
#ifndef OPENSSL_NO_SHA256
715
EVP_add_digest(EVP_sha256());
716
#endif /* OPENSSL_NO_SHA256 */
717
/* TODO: if /dev/urandom is available, PRNG is seeded
718
* automatically. If this is not the case, random data should
719
* be added here. */
720
721
#ifdef PKCS12_FUNCS
722
#ifndef OPENSSL_NO_RC2
723
/*
724
* 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
725
* This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
726
* versions, but it looks like OpenSSL 1.0.0 does not do that
727
* anymore.
728
*/
729
EVP_add_cipher(EVP_rc2_40_cbc());
730
#endif /* OPENSSL_NO_RC2 */
731
PKCS12_PBE_add();
732
#endif /* PKCS12_FUNCS */
733
}
734
tls_openssl_ref_count++;
735
736
ssl = SSL_CTX_new(TLSv1_method());
737
if (ssl == NULL)
738
return NULL;
739
740
SSL_CTX_set_info_callback(ssl, ssl_info_cb);
741
742
#ifndef OPENSSL_NO_ENGINE
743
if (conf &&
744
(conf->opensc_engine_path || conf->pkcs11_engine_path ||
745
conf->pkcs11_module_path)) {
746
wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine");
747
ERR_load_ENGINE_strings();
748
ENGINE_load_dynamic();
749
750
if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
751
tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
752
conf->pkcs11_module_path)) {
753
tls_deinit(ssl);
754
return NULL;
755
}
756
}
757
#endif /* OPENSSL_NO_ENGINE */
758
759
return ssl;
760
}
761
762
763
void tls_deinit(void *ssl_ctx)
764
{
765
SSL_CTX *ssl = ssl_ctx;
766
SSL_CTX_free(ssl);
767
768
tls_openssl_ref_count--;
769
if (tls_openssl_ref_count == 0) {
770
#ifndef OPENSSL_NO_ENGINE
771
ENGINE_cleanup();
772
#endif /* OPENSSL_NO_ENGINE */
773
CRYPTO_cleanup_all_ex_data();
774
ERR_remove_state(0);
775
ERR_free_strings();
776
EVP_cleanup();
777
os_free(tls_global);
778
tls_global = NULL;
779
}
780
}
781
782
783
static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
784
const char *pin, const char *key_id,
785
const char *cert_id, const char *ca_cert_id)
786
{
787
#ifndef OPENSSL_NO_ENGINE
788
int ret = -1;
789
if (engine_id == NULL) {
790
wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
791
return -1;
792
}
793
if (pin == NULL) {
794
wpa_printf(MSG_ERROR, "ENGINE: Smartcard PIN not set");
795
return -1;
796
}
797
if (key_id == NULL) {
798
wpa_printf(MSG_ERROR, "ENGINE: Key Id not set");
799
return -1;
800
}
801
802
ERR_clear_error();
803
conn->engine = ENGINE_by_id(engine_id);
804
if (!conn->engine) {
805
wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
806
engine_id, ERR_error_string(ERR_get_error(), NULL));
807
goto err;
808
}
809
if (ENGINE_init(conn->engine) != 1) {
810
wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
811
"(engine: %s) [%s]", engine_id,
812
ERR_error_string(ERR_get_error(), NULL));
813
goto err;
814
}
815
wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
816
817
if (ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
818
wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
819
ERR_error_string(ERR_get_error(), NULL));
820
goto err;
821
}
822
/* load private key first in-case PIN is required for cert */
823
conn->private_key = ENGINE_load_private_key(conn->engine,
824
key_id, NULL, NULL);
825
if (!conn->private_key) {
826
wpa_printf(MSG_ERROR, "ENGINE: cannot load private key with id"
827
" '%s' [%s]", key_id,
828
ERR_error_string(ERR_get_error(), NULL));
829
ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
830
goto err;
831
}
832
833
/* handle a certificate and/or CA certificate */
834
if (cert_id || ca_cert_id) {
835
const char *cmd_name = "LOAD_CERT_CTRL";
836
837
/* test if the engine supports a LOAD_CERT_CTRL */
838
if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME,
839
0, (void *)cmd_name, NULL)) {
840
wpa_printf(MSG_ERROR, "ENGINE: engine does not support"
841
" loading certificates");
842
ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
843
goto err;
844
}
845
}
846
847
return 0;
848
849
err:
850
if (conn->engine) {
851
ENGINE_free(conn->engine);
852
conn->engine = NULL;
853
}
854
855
if (conn->private_key) {
856
EVP_PKEY_free(conn->private_key);
857
conn->private_key = NULL;
858
}
859
860
return ret;
861
#else /* OPENSSL_NO_ENGINE */
862
return 0;
863
#endif /* OPENSSL_NO_ENGINE */
864
}
865
866
867
static void tls_engine_deinit(struct tls_connection *conn)
868
{
869
#ifndef OPENSSL_NO_ENGINE
870
wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
871
if (conn->private_key) {
872
EVP_PKEY_free(conn->private_key);
873
conn->private_key = NULL;
874
}
875
if (conn->engine) {
876
ENGINE_finish(conn->engine);
877
conn->engine = NULL;
878
}
879
#endif /* OPENSSL_NO_ENGINE */
880
}
881
882
883
int tls_get_errors(void *ssl_ctx)
884
{
885
int count = 0;
886
unsigned long err;
887
888
while ((err = ERR_get_error())) {
889
wpa_printf(MSG_INFO, "TLS - SSL error: %s",
890
ERR_error_string(err, NULL));
891
count++;
892
}
893
894
return count;
895
}
896
897
struct tls_connection * tls_connection_init(void *ssl_ctx)
898
{
899
SSL_CTX *ssl = ssl_ctx;
900
struct tls_connection *conn;
901
long options;
902
903
conn = os_zalloc(sizeof(*conn));
904
if (conn == NULL)
905
return NULL;
906
conn->ssl = SSL_new(ssl);
907
if (conn->ssl == NULL) {
908
tls_show_errors(MSG_INFO, __func__,
909
"Failed to initialize new SSL connection");
910
os_free(conn);
911
return NULL;
912
}
913
914
SSL_set_app_data(conn->ssl, conn);
915
options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
916
SSL_OP_SINGLE_DH_USE;
917
#ifdef SSL_OP_NO_COMPRESSION
918
options |= SSL_OP_NO_COMPRESSION;
919
#endif /* SSL_OP_NO_COMPRESSION */
920
SSL_set_options(conn->ssl, options);
921
922
conn->ssl_in = BIO_new(BIO_s_mem());
923
if (!conn->ssl_in) {
924
tls_show_errors(MSG_INFO, __func__,
925
"Failed to create a new BIO for ssl_in");
926
SSL_free(conn->ssl);
927
os_free(conn);
928
return NULL;
929
}
930
931
conn->ssl_out = BIO_new(BIO_s_mem());
932
if (!conn->ssl_out) {
933
tls_show_errors(MSG_INFO, __func__,
934
"Failed to create a new BIO for ssl_out");
935
SSL_free(conn->ssl);
936
BIO_free(conn->ssl_in);
937
os_free(conn);
938
return NULL;
939
}
940
941
SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
942
943
return conn;
944
}
945
946
947
void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
948
{
949
if (conn == NULL)
950
return;
951
SSL_free(conn->ssl);
952
tls_engine_deinit(conn);
953
os_free(conn->subject_match);
954
os_free(conn->altsubject_match);
955
os_free(conn->session_ticket);
956
os_free(conn);
957
}
958
959
960
int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
961
{
962
return conn ? SSL_is_init_finished(conn->ssl) : 0;
963
}
964
965
966
int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
967
{
968
if (conn == NULL)
969
return -1;
970
971
/* Shutdown previous TLS connection without notifying the peer
972
* because the connection was already terminated in practice
973
* and "close notify" shutdown alert would confuse AS. */
974
SSL_set_quiet_shutdown(conn->ssl, 1);
975
SSL_shutdown(conn->ssl);
976
return 0;
977
}
978
979
980
static int tls_match_altsubject_component(X509 *cert, int type,
981
const char *value, size_t len)
982
{
983
GENERAL_NAME *gen;
984
void *ext;
985
int i, found = 0;
986
987
ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
988
989
for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
990
gen = sk_GENERAL_NAME_value(ext, i);
991
if (gen->type != type)
992
continue;
993
if (os_strlen((char *) gen->d.ia5->data) == len &&
994
os_memcmp(value, gen->d.ia5->data, len) == 0)
995
found++;
996
}
997
998
return found;
999
}
1000
1001
1002
static int tls_match_altsubject(X509 *cert, const char *match)
1003
{
1004
int type;
1005
const char *pos, *end;
1006
size_t len;
1007
1008
pos = match;
1009
do {
1010
if (os_strncmp(pos, "EMAIL:", 6) == 0) {
1011
type = GEN_EMAIL;
1012
pos += 6;
1013
} else if (os_strncmp(pos, "DNS:", 4) == 0) {
1014
type = GEN_DNS;
1015
pos += 4;
1016
} else if (os_strncmp(pos, "URI:", 4) == 0) {
1017
type = GEN_URI;
1018
pos += 4;
1019
} else {
1020
wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
1021
"match '%s'", pos);
1022
return 0;
1023
}
1024
end = os_strchr(pos, ';');
1025
while (end) {
1026
if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
1027
os_strncmp(end + 1, "DNS:", 4) == 0 ||
1028
os_strncmp(end + 1, "URI:", 4) == 0)
1029
break;
1030
end = os_strchr(end + 1, ';');
1031
}
1032
if (end)
1033
len = end - pos;
1034
else
1035
len = os_strlen(pos);
1036
if (tls_match_altsubject_component(cert, type, pos, len) > 0)
1037
return 1;
1038
pos = end + 1;
1039
} while (end);
1040
1041
return 0;
1042
}
1043
1044
1045
static enum tls_fail_reason openssl_tls_fail_reason(int err)
1046
{
1047
switch (err) {
1048
case X509_V_ERR_CERT_REVOKED:
1049
return TLS_FAIL_REVOKED;
1050
case X509_V_ERR_CERT_NOT_YET_VALID:
1051
case X509_V_ERR_CRL_NOT_YET_VALID:
1052
return TLS_FAIL_NOT_YET_VALID;
1053
case X509_V_ERR_CERT_HAS_EXPIRED:
1054
case X509_V_ERR_CRL_HAS_EXPIRED:
1055
return TLS_FAIL_EXPIRED;
1056
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
1057
case X509_V_ERR_UNABLE_TO_GET_CRL:
1058
case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
1059
case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
1060
case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
1061
case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
1062
case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
1063
case X509_V_ERR_CERT_CHAIN_TOO_LONG:
1064
case X509_V_ERR_PATH_LENGTH_EXCEEDED:
1065
case X509_V_ERR_INVALID_CA:
1066
return TLS_FAIL_UNTRUSTED;
1067
case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
1068
case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
1069
case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
1070
case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
1071
case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
1072
case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
1073
case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
1074
case X509_V_ERR_CERT_UNTRUSTED:
1075
case X509_V_ERR_CERT_REJECTED:
1076
return TLS_FAIL_BAD_CERTIFICATE;
1077
default:
1078
return TLS_FAIL_UNSPECIFIED;
1079
}
1080
}
1081
1082
1083
static struct wpabuf * get_x509_cert(X509 *cert)
1084
{
1085
struct wpabuf *buf;
1086
u8 *tmp;
1087
1088
int cert_len = i2d_X509(cert, NULL);
1089
if (cert_len <= 0)
1090
return NULL;
1091
1092
buf = wpabuf_alloc(cert_len);
1093
if (buf == NULL)
1094
return NULL;
1095
1096
tmp = wpabuf_put(buf, cert_len);
1097
i2d_X509(cert, &tmp);
1098
return buf;
1099
}
1100
1101
1102
static void openssl_tls_fail_event(struct tls_connection *conn,
1103
X509 *err_cert, int err, int depth,
1104
const char *subject, const char *err_str,
1105
enum tls_fail_reason reason)
1106
{
1107
union tls_event_data ev;
1108
struct wpabuf *cert = NULL;
1109
1110
if (tls_global->event_cb == NULL)
1111
return;
1112
1113
cert = get_x509_cert(err_cert);
1114
os_memset(&ev, 0, sizeof(ev));
1115
ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
1116
reason : openssl_tls_fail_reason(err);
1117
ev.cert_fail.depth = depth;
1118
ev.cert_fail.subject = subject;
1119
ev.cert_fail.reason_txt = err_str;
1120
ev.cert_fail.cert = cert;
1121
tls_global->event_cb(tls_global->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
1122
wpabuf_free(cert);
1123
}
1124
1125
1126
static void openssl_tls_cert_event(struct tls_connection *conn,
1127
X509 *err_cert, int depth,
1128
const char *subject)
1129
{
1130
struct wpabuf *cert = NULL;
1131
union tls_event_data ev;
1132
#ifdef CONFIG_SHA256
1133
u8 hash[32];
1134
#endif /* CONFIG_SHA256 */
1135
1136
if (tls_global->event_cb == NULL)
1137
return;
1138
1139
os_memset(&ev, 0, sizeof(ev));
1140
if (conn->cert_probe) {
1141
cert = get_x509_cert(err_cert);
1142
ev.peer_cert.cert = cert;
1143
}
1144
#ifdef CONFIG_SHA256
1145
if (cert) {
1146
const u8 *addr[1];
1147
size_t len[1];
1148
addr[0] = wpabuf_head(cert);
1149
len[0] = wpabuf_len(cert);
1150
if (sha256_vector(1, addr, len, hash) == 0) {
1151
ev.peer_cert.hash = hash;
1152
ev.peer_cert.hash_len = sizeof(hash);
1153
}
1154
}
1155
#endif /* CONFIG_SHA256 */
1156
ev.peer_cert.depth = depth;
1157
ev.peer_cert.subject = subject;
1158
tls_global->event_cb(tls_global->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
1159
wpabuf_free(cert);
1160
}
1161
1162
1163
static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
1164
{
1165
char buf[256];
1166
X509 *err_cert;
1167
int err, depth;
1168
SSL *ssl;
1169
struct tls_connection *conn;
1170
char *match, *altmatch;
1171
const char *err_str;
1172
1173
err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
1174
err = X509_STORE_CTX_get_error(x509_ctx);
1175
depth = X509_STORE_CTX_get_error_depth(x509_ctx);
1176
ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
1177
SSL_get_ex_data_X509_STORE_CTX_idx());
1178
X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
1179
1180
conn = SSL_get_app_data(ssl);
1181
match = conn ? conn->subject_match : NULL;
1182
altmatch = conn ? conn->altsubject_match : NULL;
1183
1184
if (!preverify_ok && !conn->ca_cert_verify)
1185
preverify_ok = 1;
1186
if (!preverify_ok && depth > 0 && conn->server_cert_only)
1187
preverify_ok = 1;
1188
1189
err_str = X509_verify_cert_error_string(err);
1190
1191
#ifdef CONFIG_SHA256
1192
if (preverify_ok && depth == 0 && conn->server_cert_only) {
1193
struct wpabuf *cert;
1194
cert = get_x509_cert(err_cert);
1195
if (!cert) {
1196
wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch "
1197
"server certificate data");
1198
preverify_ok = 0;
1199
} else {
1200
u8 hash[32];
1201
const u8 *addr[1];
1202
size_t len[1];
1203
addr[0] = wpabuf_head(cert);
1204
len[0] = wpabuf_len(cert);
1205
if (sha256_vector(1, addr, len, hash) < 0 ||
1206
os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
1207
err_str = "Server certificate mismatch";
1208
err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
1209
preverify_ok = 0;
1210
}
1211
wpabuf_free(cert);
1212
}
1213
}
1214
#endif /* CONFIG_SHA256 */
1215
1216
if (!preverify_ok) {
1217
wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
1218
" error %d (%s) depth %d for '%s'", err, err_str,
1219
depth, buf);
1220
openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1221
err_str, TLS_FAIL_UNSPECIFIED);
1222
return preverify_ok;
1223
}
1224
1225
wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d "
1226
"err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
1227
preverify_ok, err, err_str,
1228
conn->ca_cert_verify, depth, buf);
1229
if (depth == 0 && match && os_strstr(buf, match) == NULL) {
1230
wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
1231
"match with '%s'", buf, match);
1232
preverify_ok = 0;
1233
openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1234
"Subject mismatch",
1235
TLS_FAIL_SUBJECT_MISMATCH);
1236
} else if (depth == 0 && altmatch &&
1237
!tls_match_altsubject(err_cert, altmatch)) {
1238
wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
1239
"'%s' not found", altmatch);
1240
preverify_ok = 0;
1241
openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1242
"AltSubject mismatch",
1243
TLS_FAIL_ALTSUBJECT_MISMATCH);
1244
} else
1245
openssl_tls_cert_event(conn, err_cert, depth, buf);
1246
1247
if (conn->cert_probe && preverify_ok && depth == 0) {
1248
wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate "
1249
"on probe-only run");
1250
preverify_ok = 0;
1251
openssl_tls_fail_event(conn, err_cert, err, depth, buf,
1252
"Server certificate chain probe",
1253
TLS_FAIL_SERVER_CHAIN_PROBE);
1254
}
1255
1256
return preverify_ok;
1257
}
1258
1259
1260
#ifndef OPENSSL_NO_STDIO
1261
static int tls_load_ca_der(void *_ssl_ctx, const char *ca_cert)
1262
{
1263
SSL_CTX *ssl_ctx = _ssl_ctx;
1264
X509_LOOKUP *lookup;
1265
int ret = 0;
1266
1267
lookup = X509_STORE_add_lookup(ssl_ctx->cert_store,
1268
X509_LOOKUP_file());
1269
if (lookup == NULL) {
1270
tls_show_errors(MSG_WARNING, __func__,
1271
"Failed add lookup for X509 store");
1272
return -1;
1273
}
1274
1275
if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
1276
unsigned long err = ERR_peek_error();
1277
tls_show_errors(MSG_WARNING, __func__,
1278
"Failed load CA in DER format");
1279
if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1280
ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1281
wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1282
"cert already in hash table error",
1283
__func__);
1284
} else
1285
ret = -1;
1286
}
1287
1288
return ret;
1289
}
1290
#endif /* OPENSSL_NO_STDIO */
1291
1292
1293
static int tls_connection_ca_cert(void *_ssl_ctx, struct tls_connection *conn,
1294
const char *ca_cert, const u8 *ca_cert_blob,
1295
size_t ca_cert_blob_len, const char *ca_path)
1296
{
1297
SSL_CTX *ssl_ctx = _ssl_ctx;
1298
1299
/*
1300
* Remove previously configured trusted CA certificates before adding
1301
* new ones.
1302
*/
1303
X509_STORE_free(ssl_ctx->cert_store);
1304
ssl_ctx->cert_store = X509_STORE_new();
1305
if (ssl_ctx->cert_store == NULL) {
1306
wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
1307
"certificate store", __func__);
1308
return -1;
1309
}
1310
1311
SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1312
conn->ca_cert_verify = 1;
1313
1314
if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
1315
wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate "
1316
"chain");
1317
conn->cert_probe = 1;
1318
conn->ca_cert_verify = 0;
1319
return 0;
1320
}
1321
1322
if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
1323
#ifdef CONFIG_SHA256
1324
const char *pos = ca_cert + 7;
1325
if (os_strncmp(pos, "server/sha256/", 14) != 0) {
1326
wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert "
1327
"hash value '%s'", ca_cert);
1328
return -1;
1329
}
1330
pos += 14;
1331
if (os_strlen(pos) != 32 * 2) {
1332
wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 "
1333
"hash length in ca_cert '%s'", ca_cert);
1334
return -1;
1335
}
1336
if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
1337
wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash "
1338
"value in ca_cert '%s'", ca_cert);
1339
return -1;
1340
}
1341
conn->server_cert_only = 1;
1342
wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server "
1343
"certificate match");
1344
return 0;
1345
#else /* CONFIG_SHA256 */
1346
wpa_printf(MSG_INFO, "No SHA256 included in the build - "
1347
"cannot validate server certificate hash");
1348
return -1;
1349
#endif /* CONFIG_SHA256 */
1350
}
1351
1352
if (ca_cert_blob) {
1353
X509 *cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &ca_cert_blob,
1354
ca_cert_blob_len);
1355
if (cert == NULL) {
1356
tls_show_errors(MSG_WARNING, __func__,
1357
"Failed to parse ca_cert_blob");
1358
return -1;
1359
}
1360
1361
if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
1362
unsigned long err = ERR_peek_error();
1363
tls_show_errors(MSG_WARNING, __func__,
1364
"Failed to add ca_cert_blob to "
1365
"certificate store");
1366
if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1367
ERR_GET_REASON(err) ==
1368
X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1369
wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1370
"cert already in hash table error",
1371
__func__);
1372
} else {
1373
X509_free(cert);
1374
return -1;
1375
}
1376
}
1377
X509_free(cert);
1378
wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
1379
"to certificate store", __func__);
1380
return 0;
1381
}
1382
1383
#ifdef CONFIG_NATIVE_WINDOWS
1384
if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
1385
0) {
1386
wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
1387
"system certificate store");
1388
return 0;
1389
}
1390
#endif /* CONFIG_NATIVE_WINDOWS */
1391
1392
if (ca_cert || ca_path) {
1393
#ifndef OPENSSL_NO_STDIO
1394
if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
1395
1) {
1396
tls_show_errors(MSG_WARNING, __func__,
1397
"Failed to load root certificates");
1398
if (ca_cert &&
1399
tls_load_ca_der(ssl_ctx, ca_cert) == 0) {
1400
wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
1401
"DER format CA certificate",
1402
__func__);
1403
} else
1404
return -1;
1405
} else {
1406
wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1407
"certificate(s) loaded");
1408
tls_get_errors(ssl_ctx);
1409
}
1410
#else /* OPENSSL_NO_STDIO */
1411
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
1412
__func__);
1413
return -1;
1414
#endif /* OPENSSL_NO_STDIO */
1415
} else {
1416
/* No ca_cert configured - do not try to verify server
1417
* certificate */
1418
conn->ca_cert_verify = 0;
1419
}
1420
1421
return 0;
1422
}
1423
1424
1425
static int tls_global_ca_cert(SSL_CTX *ssl_ctx, const char *ca_cert)
1426
{
1427
if (ca_cert) {
1428
if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
1429
{
1430
tls_show_errors(MSG_WARNING, __func__,
1431
"Failed to load root certificates");
1432
return -1;
1433
}
1434
1435
wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1436
"certificate(s) loaded");
1437
1438
#ifndef OPENSSL_NO_STDIO
1439
/* Add the same CAs to the client certificate requests */
1440
SSL_CTX_set_client_CA_list(ssl_ctx,
1441
SSL_load_client_CA_file(ca_cert));
1442
#endif /* OPENSSL_NO_STDIO */
1443
}
1444
1445
return 0;
1446
}
1447
1448
1449
int tls_global_set_verify(void *ssl_ctx, int check_crl)
1450
{
1451
int flags;
1452
1453
if (check_crl) {
1454
X509_STORE *cs = SSL_CTX_get_cert_store(ssl_ctx);
1455
if (cs == NULL) {
1456
tls_show_errors(MSG_INFO, __func__, "Failed to get "
1457
"certificate store when enabling "
1458
"check_crl");
1459
return -1;
1460
}
1461
flags = X509_V_FLAG_CRL_CHECK;
1462
if (check_crl == 2)
1463
flags |= X509_V_FLAG_CRL_CHECK_ALL;
1464
X509_STORE_set_flags(cs, flags);
1465
}
1466
return 0;
1467
}
1468
1469
1470
static int tls_connection_set_subject_match(struct tls_connection *conn,
1471
const char *subject_match,
1472
const char *altsubject_match)
1473
{
1474
os_free(conn->subject_match);
1475
conn->subject_match = NULL;
1476
if (subject_match) {
1477
conn->subject_match = os_strdup(subject_match);
1478
if (conn->subject_match == NULL)
1479
return -1;
1480
}
1481
1482
os_free(conn->altsubject_match);
1483
conn->altsubject_match = NULL;
1484
if (altsubject_match) {
1485
conn->altsubject_match = os_strdup(altsubject_match);
1486
if (conn->altsubject_match == NULL)
1487
return -1;
1488
}
1489
1490
return 0;
1491
}
1492
1493
1494
int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
1495
int verify_peer)
1496
{
1497
static int counter = 0;
1498
1499
if (conn == NULL)
1500
return -1;
1501
1502
if (verify_peer) {
1503
conn->ca_cert_verify = 1;
1504
SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
1505
SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
1506
SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
1507
} else {
1508
conn->ca_cert_verify = 0;
1509
SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
1510
}
1511
1512
SSL_set_accept_state(conn->ssl);
1513
1514
/*
1515
* Set session id context in order to avoid fatal errors when client
1516
* tries to resume a session. However, set the context to a unique
1517
* value in order to effectively disable session resumption for now
1518
* since not all areas of the server code are ready for it (e.g.,
1519
* EAP-TTLS needs special handling for Phase 2 after abbreviated TLS
1520
* handshake).
1521
*/
1522
counter++;
1523
SSL_set_session_id_context(conn->ssl,
1524
(const unsigned char *) &counter,
1525
sizeof(counter));
1526
1527
return 0;
1528
}
1529
1530
1531
static int tls_connection_client_cert(struct tls_connection *conn,
1532
const char *client_cert,
1533
const u8 *client_cert_blob,
1534
size_t client_cert_blob_len)
1535
{
1536
if (client_cert == NULL && client_cert_blob == NULL)
1537
return 0;
1538
1539
if (client_cert_blob &&
1540
SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
1541
client_cert_blob_len) == 1) {
1542
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
1543
"OK");
1544
return 0;
1545
} else if (client_cert_blob) {
1546
tls_show_errors(MSG_DEBUG, __func__,
1547
"SSL_use_certificate_ASN1 failed");
1548
}
1549
1550
if (client_cert == NULL)
1551
return -1;
1552
1553
#ifndef OPENSSL_NO_STDIO
1554
if (SSL_use_certificate_file(conn->ssl, client_cert,
1555
SSL_FILETYPE_ASN1) == 1) {
1556
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
1557
" --> OK");
1558
return 0;
1559
} else {
1560
tls_show_errors(MSG_DEBUG, __func__,
1561
"SSL_use_certificate_file (DER) failed");
1562
}
1563
1564
if (SSL_use_certificate_file(conn->ssl, client_cert,
1565
SSL_FILETYPE_PEM) == 1) {
1566
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
1567
" --> OK");
1568
return 0;
1569
} else {
1570
tls_show_errors(MSG_DEBUG, __func__,
1571
"SSL_use_certificate_file (PEM) failed");
1572
}
1573
#else /* OPENSSL_NO_STDIO */
1574
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
1575
#endif /* OPENSSL_NO_STDIO */
1576
1577
return -1;
1578
}
1579
1580
1581
static int tls_global_client_cert(SSL_CTX *ssl_ctx, const char *client_cert)
1582
{
1583
#ifndef OPENSSL_NO_STDIO
1584
if (client_cert == NULL)
1585
return 0;
1586
1587
if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
1588
SSL_FILETYPE_ASN1) != 1 &&
1589
SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
1590
SSL_FILETYPE_PEM) != 1) {
1591
tls_show_errors(MSG_INFO, __func__,
1592
"Failed to load client certificate");
1593
return -1;
1594
}
1595
return 0;
1596
#else /* OPENSSL_NO_STDIO */
1597
if (client_cert == NULL)
1598
return 0;
1599
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
1600
return -1;
1601
#endif /* OPENSSL_NO_STDIO */
1602
}
1603
1604
1605
static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
1606
{
1607
if (password == NULL) {
1608
return 0;
1609
}
1610
os_strlcpy(buf, (char *) password, size);
1611
return os_strlen(buf);
1612
}
1613
1614
1615
#ifdef PKCS12_FUNCS
1616
static int tls_parse_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, PKCS12 *p12,
1617
const char *passwd)
1618
{
1619
EVP_PKEY *pkey;
1620
X509 *cert;
1621
STACK_OF(X509) *certs;
1622
int res = 0;
1623
char buf[256];
1624
1625
pkey = NULL;
1626
cert = NULL;
1627
certs = NULL;
1628
if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
1629
tls_show_errors(MSG_DEBUG, __func__,
1630
"Failed to parse PKCS12 file");
1631
PKCS12_free(p12);
1632
return -1;
1633
}
1634
wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
1635
1636
if (cert) {
1637
X509_NAME_oneline(X509_get_subject_name(cert), buf,
1638
sizeof(buf));
1639
wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
1640
"subject='%s'", buf);
1641
if (ssl) {
1642
if (SSL_use_certificate(ssl, cert) != 1)
1643
res = -1;
1644
} else {
1645
if (SSL_CTX_use_certificate(ssl_ctx, cert) != 1)
1646
res = -1;
1647
}
1648
X509_free(cert);
1649
}
1650
1651
if (pkey) {
1652
wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
1653
if (ssl) {
1654
if (SSL_use_PrivateKey(ssl, pkey) != 1)
1655
res = -1;
1656
} else {
1657
if (SSL_CTX_use_PrivateKey(ssl_ctx, pkey) != 1)
1658
res = -1;
1659
}
1660
EVP_PKEY_free(pkey);
1661
}
1662
1663
if (certs) {
1664
while ((cert = sk_X509_pop(certs)) != NULL) {
1665
X509_NAME_oneline(X509_get_subject_name(cert), buf,
1666
sizeof(buf));
1667
wpa_printf(MSG_DEBUG, "TLS: additional certificate"
1668
" from PKCS12: subject='%s'", buf);
1669
/*
1670
* There is no SSL equivalent for the chain cert - so
1671
* always add it to the context...
1672
*/
1673
if (SSL_CTX_add_extra_chain_cert(ssl_ctx, cert) != 1) {
1674
res = -1;
1675
break;
1676
}
1677
}
1678
sk_X509_free(certs);
1679
}
1680
1681
PKCS12_free(p12);
1682
1683
if (res < 0)
1684
tls_get_errors(ssl_ctx);
1685
1686
return res;
1687
}
1688
#endif /* PKCS12_FUNCS */
1689
1690
1691
static int tls_read_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, const char *private_key,
1692
const char *passwd)
1693
{
1694
#ifdef PKCS12_FUNCS
1695
FILE *f;
1696
PKCS12 *p12;
1697
1698
f = fopen(private_key, "rb");
1699
if (f == NULL)
1700
return -1;
1701
1702
p12 = d2i_PKCS12_fp(f, NULL);
1703
fclose(f);
1704
1705
if (p12 == NULL) {
1706
tls_show_errors(MSG_INFO, __func__,
1707
"Failed to use PKCS#12 file");
1708
return -1;
1709
}
1710
1711
return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
1712
1713
#else /* PKCS12_FUNCS */
1714
wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
1715
"p12/pfx files");
1716
return -1;
1717
#endif /* PKCS12_FUNCS */
1718
}
1719
1720
1721
static int tls_read_pkcs12_blob(SSL_CTX *ssl_ctx, SSL *ssl,
1722
const u8 *blob, size_t len, const char *passwd)
1723
{
1724
#ifdef PKCS12_FUNCS
1725
PKCS12 *p12;
1726
1727
p12 = d2i_PKCS12(NULL, (OPENSSL_d2i_TYPE) &blob, len);
1728
if (p12 == NULL) {
1729
tls_show_errors(MSG_INFO, __func__,
1730
"Failed to use PKCS#12 blob");
1731
return -1;
1732
}
1733
1734
return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
1735
1736
#else /* PKCS12_FUNCS */
1737
wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
1738
"p12/pfx blobs");
1739
return -1;
1740
#endif /* PKCS12_FUNCS */
1741
}
1742
1743
1744
#ifndef OPENSSL_NO_ENGINE
1745
static int tls_engine_get_cert(struct tls_connection *conn,
1746
const char *cert_id,
1747
X509 **cert)
1748
{
1749
/* this runs after the private key is loaded so no PIN is required */
1750
struct {
1751
const char *cert_id;
1752
X509 *cert;
1753
} params;
1754
params.cert_id = cert_id;
1755
params.cert = NULL;
1756
1757
if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL",
1758
0, ¶ms, NULL, 1)) {
1759
wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id"
1760
" '%s' [%s]", cert_id,
1761
ERR_error_string(ERR_get_error(), NULL));
1762
return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1763
}
1764
if (!params.cert) {
1765
wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id"
1766
" '%s'", cert_id);
1767
return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
1768
}
1769
*cert = params.cert;
1770
return 0;
1771
}
1772
#endif /* OPENSSL_NO_ENGINE */
1773
1774
1775
static int tls_connection_engine_client_cert(struct tls_connection *conn,
1776
const char *cert_id)
1777
{
1778
#ifndef OPENSSL_NO_ENGINE
1779
X509 *cert;
1780
1781
if (tls_engine_get_cert(conn, cert_id, &cert))
1782
return -1;
1783
1784
if (!SSL_use_certificate(conn->ssl, cert)) {
1785
tls_show_errors(MSG_ERROR, __func__,
1786
"SSL_use_certificate failed");
1787
X509_free(cert);
1788
return -1;
1789
}
1790
X509_free(cert);
1791
wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> "
1792
"OK");
1793
return 0;
1794
1795
#else /* OPENSSL_NO_ENGINE */
1796
return -1;
1797
#endif /* OPENSSL_NO_ENGINE */
1798
}
1799
1800
1801
static int tls_connection_engine_ca_cert(void *_ssl_ctx,
1802
struct tls_connection *conn,
1803
const char *ca_cert_id)
1804
{
1805
#ifndef OPENSSL_NO_ENGINE
1806
X509 *cert;
1807
SSL_CTX *ssl_ctx = _ssl_ctx;
1808
1809
if (tls_engine_get_cert(conn, ca_cert_id, &cert))
1810
return -1;
1811
1812
/* start off the same as tls_connection_ca_cert */
1813
X509_STORE_free(ssl_ctx->cert_store);
1814
ssl_ctx->cert_store = X509_STORE_new();
1815
if (ssl_ctx->cert_store == NULL) {
1816
wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
1817
"certificate store", __func__);
1818
X509_free(cert);
1819
return -1;
1820
}
1821
if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
1822
unsigned long err = ERR_peek_error();
1823
tls_show_errors(MSG_WARNING, __func__,
1824
"Failed to add CA certificate from engine "
1825
"to certificate store");
1826
if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1827
ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1828
wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert"
1829
" already in hash table error",
1830
__func__);
1831
} else {
1832
X509_free(cert);
1833
return -1;
1834
}
1835
}
1836
X509_free(cert);
1837
wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
1838
"to certificate store", __func__);
1839
SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1840
return 0;
1841
1842
#else /* OPENSSL_NO_ENGINE */
1843
return -1;
1844
#endif /* OPENSSL_NO_ENGINE */
1845
}
1846
1847
1848
static int tls_connection_engine_private_key(struct tls_connection *conn)
1849
{
1850
#ifndef OPENSSL_NO_ENGINE
1851
if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
1852
tls_show_errors(MSG_ERROR, __func__,
1853
"ENGINE: cannot use private key for TLS");
1854
return -1;
1855
}
1856
if (!SSL_check_private_key(conn->ssl)) {
1857
tls_show_errors(MSG_INFO, __func__,
1858
"Private key failed verification");
1859
return -1;
1860
}
1861
return 0;
1862
#else /* OPENSSL_NO_ENGINE */
1863
wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
1864
"engine support was not compiled in");
1865
return -1;
1866
#endif /* OPENSSL_NO_ENGINE */
1867
}
1868
1869
1870
static int tls_connection_private_key(void *_ssl_ctx,
1871
struct tls_connection *conn,
1872
const char *private_key,
1873
const char *private_key_passwd,
1874
const u8 *private_key_blob,
1875
size_t private_key_blob_len)
1876
{
1877
SSL_CTX *ssl_ctx = _ssl_ctx;
1878
char *passwd;
1879
int ok;
1880
1881
if (private_key == NULL && private_key_blob == NULL)
1882
return 0;
1883
1884
if (private_key_passwd) {
1885
passwd = os_strdup(private_key_passwd);
1886
if (passwd == NULL)
1887
return -1;
1888
} else
1889
passwd = NULL;
1890
1891
SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
1892
SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
1893
1894
ok = 0;
1895
while (private_key_blob) {
1896
if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
1897
(u8 *) private_key_blob,
1898
private_key_blob_len) == 1) {
1899
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
1900
"ASN1(EVP_PKEY_RSA) --> OK");
1901
ok = 1;
1902
break;
1903
} else {
1904
tls_show_errors(MSG_DEBUG, __func__,
1905
"SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA)"
1906
" failed");
1907
}
1908
1909
if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
1910
(u8 *) private_key_blob,
1911
private_key_blob_len) == 1) {
1912
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
1913
"ASN1(EVP_PKEY_DSA) --> OK");
1914
ok = 1;
1915
break;
1916
} else {
1917
tls_show_errors(MSG_DEBUG, __func__,
1918
"SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA)"
1919
" failed");
1920
}
1921
1922
if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
1923
(u8 *) private_key_blob,
1924
private_key_blob_len) == 1) {
1925
wpa_printf(MSG_DEBUG, "OpenSSL: "
1926
"SSL_use_RSAPrivateKey_ASN1 --> OK");
1927
ok = 1;
1928
break;
1929
} else {
1930
tls_show_errors(MSG_DEBUG, __func__,
1931
"SSL_use_RSAPrivateKey_ASN1 failed");
1932
}
1933
1934
if (tls_read_pkcs12_blob(ssl_ctx, conn->ssl, private_key_blob,
1935
private_key_blob_len, passwd) == 0) {
1936
wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
1937
"OK");
1938
ok = 1;
1939
break;
1940
}
1941
1942
break;
1943
}
1944
1945
while (!ok && private_key) {
1946
#ifndef OPENSSL_NO_STDIO
1947
if (SSL_use_PrivateKey_file(conn->ssl, private_key,
1948
SSL_FILETYPE_ASN1) == 1) {
1949
wpa_printf(MSG_DEBUG, "OpenSSL: "
1950
"SSL_use_PrivateKey_File (DER) --> OK");
1951
ok = 1;
1952
break;
1953
} else {
1954
tls_show_errors(MSG_DEBUG, __func__,
1955
"SSL_use_PrivateKey_File (DER) "
1956
"failed");
1957
}
1958
1959
if (SSL_use_PrivateKey_file(conn->ssl, private_key,
1960
SSL_FILETYPE_PEM) == 1) {
1961
wpa_printf(MSG_DEBUG, "OpenSSL: "
1962
"SSL_use_PrivateKey_File (PEM) --> OK");
1963
ok = 1;
1964
break;
1965
} else {
1966
tls_show_errors(MSG_DEBUG, __func__,
1967
"SSL_use_PrivateKey_File (PEM) "
1968
"failed");
1969
}
1970
#else /* OPENSSL_NO_STDIO */
1971
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
1972
__func__);
1973
#endif /* OPENSSL_NO_STDIO */
1974
1975
if (tls_read_pkcs12(ssl_ctx, conn->ssl, private_key, passwd)
1976
== 0) {
1977
wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
1978
"--> OK");
1979
ok = 1;
1980
break;
1981
}
1982
1983
if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
1984
wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
1985
"access certificate store --> OK");
1986
ok = 1;
1987
break;
1988
}
1989
1990
break;
1991
}
1992
1993
if (!ok) {
1994
wpa_printf(MSG_INFO, "OpenSSL: Failed to load private key");
1995
os_free(passwd);
1996
ERR_clear_error();
1997
return -1;
1998
}
1999
ERR_clear_error();
2000
SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
2001
os_free(passwd);
2002
2003
if (!SSL_check_private_key(conn->ssl)) {
2004
tls_show_errors(MSG_INFO, __func__, "Private key failed "
2005
"verification");
2006
return -1;
2007
}
2008
2009
wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
2010
return 0;
2011
}
2012
2013
2014
static int tls_global_private_key(SSL_CTX *ssl_ctx, const char *private_key,
2015
const char *private_key_passwd)
2016
{
2017
char *passwd;
2018
2019
if (private_key == NULL)
2020
return 0;
2021
2022
if (private_key_passwd) {
2023
passwd = os_strdup(private_key_passwd);
2024
if (passwd == NULL)
2025
return -1;
2026
} else
2027
passwd = NULL;
2028
2029
SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
2030
SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
2031
if (
2032
#ifndef OPENSSL_NO_STDIO
2033
SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
2034
SSL_FILETYPE_ASN1) != 1 &&
2035
SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
2036
SSL_FILETYPE_PEM) != 1 &&
2037
#endif /* OPENSSL_NO_STDIO */
2038
tls_read_pkcs12(ssl_ctx, NULL, private_key, passwd)) {
2039
tls_show_errors(MSG_INFO, __func__,
2040
"Failed to load private key");
2041
os_free(passwd);
2042
ERR_clear_error();
2043
return -1;
2044
}
2045
os_free(passwd);
2046
ERR_clear_error();
2047
SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
2048
2049
if (!SSL_CTX_check_private_key(ssl_ctx)) {
2050
tls_show_errors(MSG_INFO, __func__,
2051
"Private key failed verification");
2052
return -1;
2053
}
2054
2055
return 0;
2056
}
2057
2058
2059
static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
2060
{
2061
#ifdef OPENSSL_NO_DH
2062
if (dh_file == NULL)
2063
return 0;
2064
wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
2065
"dh_file specified");
2066
return -1;
2067
#else /* OPENSSL_NO_DH */
2068
DH *dh;
2069
BIO *bio;
2070
2071
/* TODO: add support for dh_blob */
2072
if (dh_file == NULL)
2073
return 0;
2074
if (conn == NULL)
2075
return -1;
2076
2077
bio = BIO_new_file(dh_file, "r");
2078
if (bio == NULL) {
2079
wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
2080
dh_file, ERR_error_string(ERR_get_error(), NULL));
2081
return -1;
2082
}
2083
dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
2084
BIO_free(bio);
2085
#ifndef OPENSSL_NO_DSA
2086
while (dh == NULL) {
2087
DSA *dsa;
2088
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
2089
" trying to parse as DSA params", dh_file,
2090
ERR_error_string(ERR_get_error(), NULL));
2091
bio = BIO_new_file(dh_file, "r");
2092
if (bio == NULL)
2093
break;
2094
dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
2095
BIO_free(bio);
2096
if (!dsa) {
2097
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
2098
"'%s': %s", dh_file,
2099
ERR_error_string(ERR_get_error(), NULL));
2100
break;
2101
}
2102
2103
wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
2104
dh = DSA_dup_DH(dsa);
2105
DSA_free(dsa);
2106
if (dh == NULL) {
2107
wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
2108
"params into DH params");
2109
break;
2110
}
2111
break;
2112
}
2113
#endif /* !OPENSSL_NO_DSA */
2114
if (dh == NULL) {
2115
wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
2116
"'%s'", dh_file);
2117
return -1;
2118
}
2119
2120
if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
2121
wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
2122
"%s", dh_file,
2123
ERR_error_string(ERR_get_error(), NULL));
2124
DH_free(dh);
2125
return -1;
2126
}
2127
DH_free(dh);
2128
return 0;
2129
#endif /* OPENSSL_NO_DH */
2130
}
2131
2132
2133
static int tls_global_dh(SSL_CTX *ssl_ctx, const char *dh_file)
2134
{
2135
#ifdef OPENSSL_NO_DH
2136
if (dh_file == NULL)
2137
return 0;
2138
wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
2139
"dh_file specified");
2140
return -1;
2141
#else /* OPENSSL_NO_DH */
2142
DH *dh;
2143
BIO *bio;
2144
2145
/* TODO: add support for dh_blob */
2146
if (dh_file == NULL)
2147
return 0;
2148
if (ssl_ctx == NULL)
2149
return -1;
2150
2151
bio = BIO_new_file(dh_file, "r");
2152
if (bio == NULL) {
2153
wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
2154
dh_file, ERR_error_string(ERR_get_error(), NULL));
2155
return -1;
2156
}
2157
dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
2158
BIO_free(bio);
2159
#ifndef OPENSSL_NO_DSA
2160
while (dh == NULL) {
2161
DSA *dsa;
2162
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
2163
" trying to parse as DSA params", dh_file,
2164
ERR_error_string(ERR_get_error(), NULL));
2165
bio = BIO_new_file(dh_file, "r");
2166
if (bio == NULL)
2167
break;
2168
dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
2169
BIO_free(bio);
2170
if (!dsa) {
2171
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
2172
"'%s': %s", dh_file,
2173
ERR_error_string(ERR_get_error(), NULL));
2174
break;
2175
}
2176
2177
wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
2178
dh = DSA_dup_DH(dsa);
2179
DSA_free(dsa);
2180
if (dh == NULL) {
2181
wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
2182
"params into DH params");
2183
break;
2184
}
2185
break;
2186
}
2187
#endif /* !OPENSSL_NO_DSA */
2188
if (dh == NULL) {
2189
wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
2190
"'%s'", dh_file);
2191
return -1;
2192
}
2193
2194
if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) {
2195
wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
2196
"%s", dh_file,
2197
ERR_error_string(ERR_get_error(), NULL));
2198
DH_free(dh);
2199
return -1;
2200
}
2201
DH_free(dh);
2202
return 0;
2203
#endif /* OPENSSL_NO_DH */
2204
}
2205
2206
2207
int tls_connection_get_keys(void *ssl_ctx, struct tls_connection *conn,
2208
struct tls_keys *keys)
2209
{
2210
SSL *ssl;
2211
2212
if (conn == NULL || keys == NULL)
2213
return -1;
2214
ssl = conn->ssl;
2215
if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL)
2216
return -1;
2217
2218
os_memset(keys, 0, sizeof(*keys));
2219
keys->master_key = ssl->session->master_key;
2220
keys->master_key_len = ssl->session->master_key_length;
2221
keys->client_random = ssl->s3->client_random;
2222
keys->client_random_len = SSL3_RANDOM_SIZE;
2223
keys->server_random = ssl->s3->server_random;
2224
keys->server_random_len = SSL3_RANDOM_SIZE;
2225
2226
return 0;
2227
}
2228
2229
2230
int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
2231
const char *label, int server_random_first,
2232
u8 *out, size_t out_len)
2233
{
2234
return -1;
2235
}
2236
2237
2238
static struct wpabuf *
2239
openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data,
2240
int server)
2241
{
2242
int res;
2243
struct wpabuf *out_data;
2244
2245
/*
2246
* Give TLS handshake data from the server (if available) to OpenSSL
2247
* for processing.
2248
*/
2249
if (in_data &&
2250
BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data))
2251
< 0) {
2252
tls_show_errors(MSG_INFO, __func__,
2253
"Handshake failed - BIO_write");
2254
return NULL;
2255
}
2256
2257
/* Initiate TLS handshake or continue the existing handshake */
2258
if (server)
2259
res = SSL_accept(conn->ssl);
2260
else
2261
res = SSL_connect(conn->ssl);
2262
if (res != 1) {
2263
int err = SSL_get_error(conn->ssl, res);
2264
if (err == SSL_ERROR_WANT_READ)
2265
wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
2266
"more data");
2267
else if (err == SSL_ERROR_WANT_WRITE)
2268
wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
2269
"write");
2270
else {
2271
tls_show_errors(MSG_INFO, __func__, "SSL_connect");
2272
conn->failed++;
2273
}
2274
}
2275
2276
/* Get the TLS handshake data to be sent to the server */
2277
res = BIO_ctrl_pending(conn->ssl_out);
2278
wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
2279
out_data = wpabuf_alloc(res);
2280
if (out_data == NULL) {
2281
wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
2282
"handshake output (%d bytes)", res);
2283
if (BIO_reset(conn->ssl_out) < 0) {
2284
tls_show_errors(MSG_INFO, __func__,
2285
"BIO_reset failed");
2286
}
2287
return NULL;
2288
}
2289
res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data),
2290
res);
2291
if (res < 0) {
2292
tls_show_errors(MSG_INFO, __func__,
2293
"Handshake failed - BIO_read");
2294
if (BIO_reset(conn->ssl_out) < 0) {
2295
tls_show_errors(MSG_INFO, __func__,
2296
"BIO_reset failed");
2297
}
2298
wpabuf_free(out_data);
2299
return NULL;
2300
}
2301
wpabuf_put(out_data, res);
2302
2303
return out_data;
2304
}
2305
2306
2307
static struct wpabuf *
2308
openssl_get_appl_data(struct tls_connection *conn, size_t max_len)
2309
{
2310
struct wpabuf *appl_data;
2311
int res;
2312
2313
appl_data = wpabuf_alloc(max_len + 100);
2314
if (appl_data == NULL)
2315
return NULL;
2316
2317
res = SSL_read(conn->ssl, wpabuf_mhead(appl_data),
2318
wpabuf_size(appl_data));
2319
if (res < 0) {
2320
int err = SSL_get_error(conn->ssl, res);
2321
if (err == SSL_ERROR_WANT_READ ||
2322
err == SSL_ERROR_WANT_WRITE) {
2323
wpa_printf(MSG_DEBUG, "SSL: No Application Data "
2324
"included");
2325
} else {
2326
tls_show_errors(MSG_INFO, __func__,
2327
"Failed to read possible "
2328
"Application Data");
2329
}
2330
wpabuf_free(appl_data);
2331
return NULL;
2332
}
2333
2334
wpabuf_put(appl_data, res);
2335
wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished "
2336
"message", appl_data);
2337
2338
return appl_data;
2339
}
2340
2341
2342
static struct wpabuf *
2343
openssl_connection_handshake(struct tls_connection *conn,
2344
const struct wpabuf *in_data,
2345
struct wpabuf **appl_data, int server)
2346
{
2347
struct wpabuf *out_data;
2348
2349
if (appl_data)
2350
*appl_data = NULL;
2351
2352
out_data = openssl_handshake(conn, in_data, server);
2353
if (out_data == NULL)
2354
return NULL;
2355
2356
if (SSL_is_init_finished(conn->ssl) && appl_data && in_data)
2357
*appl_data = openssl_get_appl_data(conn, wpabuf_len(in_data));
2358
2359
return out_data;
2360
}
2361
2362
2363
struct wpabuf *
2364
tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
2365
const struct wpabuf *in_data,
2366
struct wpabuf **appl_data)
2367
{
2368
return openssl_connection_handshake(conn, in_data, appl_data, 0);
2369
}
2370
2371
2372
struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
2373
struct tls_connection *conn,
2374
const struct wpabuf *in_data,
2375
struct wpabuf **appl_data)
2376
{
2377
return openssl_connection_handshake(conn, in_data, appl_data, 1);
2378
}
2379
2380
2381
struct wpabuf * tls_connection_encrypt(void *tls_ctx,
2382
struct tls_connection *conn,
2383
const struct wpabuf *in_data)
2384
{
2385
int res;
2386
struct wpabuf *buf;
2387
2388
if (conn == NULL)
2389
return NULL;
2390
2391
/* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
2392
if ((res = BIO_reset(conn->ssl_in)) < 0 ||
2393
(res = BIO_reset(conn->ssl_out)) < 0) {
2394
tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
2395
return NULL;
2396
}
2397
res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data));
2398
if (res < 0) {
2399
tls_show_errors(MSG_INFO, __func__,
2400
"Encryption failed - SSL_write");
2401
return NULL;
2402
}
2403
2404
/* Read encrypted data to be sent to the server */
2405
buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
2406
if (buf == NULL)
2407
return NULL;
2408
res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf));
2409
if (res < 0) {
2410
tls_show_errors(MSG_INFO, __func__,
2411
"Encryption failed - BIO_read");
2412
wpabuf_free(buf);
2413
return NULL;
2414
}
2415
wpabuf_put(buf, res);
2416
2417
return buf;
2418
}
2419
2420
2421
struct wpabuf * tls_connection_decrypt(void *tls_ctx,
2422
struct tls_connection *conn,
2423
const struct wpabuf *in_data)
2424
{
2425
int res;
2426
struct wpabuf *buf;
2427
2428
/* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
2429
res = BIO_write(conn->ssl_in, wpabuf_head(in_data),
2430
wpabuf_len(in_data));
2431
if (res < 0) {
2432
tls_show_errors(MSG_INFO, __func__,
2433
"Decryption failed - BIO_write");
2434
return NULL;
2435
}
2436
if (BIO_reset(conn->ssl_out) < 0) {
2437
tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
2438
return NULL;
2439
}
2440
2441
/* Read decrypted data for further processing */
2442
/*
2443
* Even though we try to disable TLS compression, it is possible that
2444
* this cannot be done with all TLS libraries. Add extra buffer space
2445
* to handle the possibility of the decrypted data being longer than
2446
* input data.
2447
*/
2448
buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
2449
if (buf == NULL)
2450
return NULL;
2451
res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
2452
if (res < 0) {
2453
tls_show_errors(MSG_INFO, __func__,
2454
"Decryption failed - SSL_read");
2455
wpabuf_free(buf);
2456
return NULL;
2457
}
2458
wpabuf_put(buf, res);
2459
2460
return buf;
2461
}
2462
2463
2464
int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
2465
{
2466
return conn ? conn->ssl->hit : 0;
2467
}
2468
2469
2470
int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
2471
u8 *ciphers)
2472
{
2473
char buf[100], *pos, *end;
2474
u8 *c;
2475
int ret;
2476
2477
if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
2478
return -1;
2479
2480
buf[0] = '\0';
2481
pos = buf;
2482
end = pos + sizeof(buf);
2483
2484
c = ciphers;
2485
while (*c != TLS_CIPHER_NONE) {
2486
const char *suite;
2487
2488
switch (*c) {
2489
case TLS_CIPHER_RC4_SHA:
2490
suite = "RC4-SHA";
2491
break;
2492
case TLS_CIPHER_AES128_SHA:
2493
suite = "AES128-SHA";
2494
break;
2495
case TLS_CIPHER_RSA_DHE_AES128_SHA:
2496
suite = "DHE-RSA-AES128-SHA";
2497
break;
2498
case TLS_CIPHER_ANON_DH_AES128_SHA:
2499
suite = "ADH-AES128-SHA";
2500
break;
2501
default:
2502
wpa_printf(MSG_DEBUG, "TLS: Unsupported "
2503
"cipher selection: %d", *c);
2504
return -1;
2505
}
2506
ret = os_snprintf(pos, end - pos, ":%s", suite);
2507
if (ret < 0 || ret >= end - pos)
2508
break;
2509
pos += ret;
2510
2511
c++;
2512
}
2513
2514
wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
2515
2516
if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
2517
tls_show_errors(MSG_INFO, __func__,
2518
"Cipher suite configuration failed");
2519
return -1;
2520
}
2521
2522
return 0;
2523
}
2524
2525
2526
int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
2527
char *buf, size_t buflen)
2528
{
2529
const char *name;
2530
if (conn == NULL || conn->ssl == NULL)
2531
return -1;
2532
2533
name = SSL_get_cipher(conn->ssl);
2534
if (name == NULL)
2535
return -1;
2536
2537
os_strlcpy(buf, name, buflen);
2538
return 0;
2539
}
2540
2541
2542
int tls_connection_enable_workaround(void *ssl_ctx,
2543
struct tls_connection *conn)
2544
{
2545
SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
2546
2547
return 0;
2548
}
2549
2550
2551
#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
2552
/* ClientHello TLS extensions require a patch to openssl, so this function is
2553
* commented out unless explicitly needed for EAP-FAST in order to be able to
2554
* build this file with unmodified openssl. */
2555
int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
2556
int ext_type, const u8 *data,
2557
size_t data_len)
2558
{
2559
if (conn == NULL || conn->ssl == NULL || ext_type != 35)
2560
return -1;
2561
2562
#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
2563
if (SSL_set_session_ticket_ext(conn->ssl, (void *) data,
2564
data_len) != 1)
2565
return -1;
2566
#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2567
if (SSL_set_hello_extension(conn->ssl, ext_type, (void *) data,
2568
data_len) != 1)
2569
return -1;
2570
#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2571
2572
return 0;
2573
}
2574
#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
2575
2576
2577
int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
2578
{
2579
if (conn == NULL)
2580
return -1;
2581
return conn->failed;
2582
}
2583
2584
2585
int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
2586
{
2587
if (conn == NULL)
2588
return -1;
2589
return conn->read_alerts;
2590
}
2591
2592
2593
int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
2594
{
2595
if (conn == NULL)
2596
return -1;
2597
return conn->write_alerts;
2598
}
2599
2600
2601
int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
2602
const struct tls_connection_params *params)
2603
{
2604
int ret;
2605
unsigned long err;
2606
2607
if (conn == NULL)
2608
return -1;
2609
2610
while ((err = ERR_get_error())) {
2611
wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
2612
__func__, ERR_error_string(err, NULL));
2613
}
2614
2615
if (params->engine) {
2616
wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
2617
ret = tls_engine_init(conn, params->engine_id, params->pin,
2618
params->key_id, params->cert_id,
2619
params->ca_cert_id);
2620
if (ret)
2621
return ret;
2622
}
2623
if (tls_connection_set_subject_match(conn,
2624
params->subject_match,
2625
params->altsubject_match))
2626
return -1;
2627
2628
if (params->engine && params->ca_cert_id) {
2629
if (tls_connection_engine_ca_cert(tls_ctx, conn,
2630
params->ca_cert_id))
2631
return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
2632
} else if (tls_connection_ca_cert(tls_ctx, conn, params->ca_cert,
2633
params->ca_cert_blob,
2634
params->ca_cert_blob_len,
2635
params->ca_path))
2636
return -1;
2637
2638
if (params->engine && params->cert_id) {
2639
if (tls_connection_engine_client_cert(conn, params->cert_id))
2640
return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
2641
} else if (tls_connection_client_cert(conn, params->client_cert,
2642
params->client_cert_blob,
2643
params->client_cert_blob_len))
2644
return -1;
2645
2646
if (params->engine && params->key_id) {
2647
wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
2648
if (tls_connection_engine_private_key(conn))
2649
return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
2650
} else if (tls_connection_private_key(tls_ctx, conn,
2651
params->private_key,
2652
params->private_key_passwd,
2653
params->private_key_blob,
2654
params->private_key_blob_len)) {
2655
wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
2656
params->private_key);
2657
return -1;
2658
}
2659
2660
if (tls_connection_dh(conn, params->dh_file)) {
2661
wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
2662
params->dh_file);
2663
return -1;
2664
}
2665
2666
tls_get_errors(tls_ctx);
2667
2668
return 0;
2669
}
2670
2671
2672
int tls_global_set_params(void *tls_ctx,
2673
const struct tls_connection_params *params)
2674
{
2675
SSL_CTX *ssl_ctx = tls_ctx;
2676
unsigned long err;
2677
2678
while ((err = ERR_get_error())) {
2679
wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
2680
__func__, ERR_error_string(err, NULL));
2681
}
2682
2683
if (tls_global_ca_cert(ssl_ctx, params->ca_cert))
2684
return -1;
2685
2686
if (tls_global_client_cert(ssl_ctx, params->client_cert))
2687
return -1;
2688
2689
if (tls_global_private_key(ssl_ctx, params->private_key,
2690
params->private_key_passwd))
2691
return -1;
2692
2693
if (tls_global_dh(ssl_ctx, params->dh_file)) {
2694
wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
2695
params->dh_file);
2696
return -1;
2697
}
2698
2699
return 0;
2700
}
2701
2702
2703
int tls_connection_get_keyblock_size(void *tls_ctx,
2704
struct tls_connection *conn)
2705
{
2706
const EVP_CIPHER *c;
2707
const EVP_MD *h;
2708
2709
if (conn == NULL || conn->ssl == NULL ||
2710
conn->ssl->enc_read_ctx == NULL ||
2711
conn->ssl->enc_read_ctx->cipher == NULL ||
2712
conn->ssl->read_hash == NULL)
2713
return -1;
2714
2715
c = conn->ssl->enc_read_ctx->cipher;
2716
#if OPENSSL_VERSION_NUMBER >= 0x00909000L
2717
h = EVP_MD_CTX_md(conn->ssl->read_hash);
2718
#else
2719
h = conn->ssl->read_hash;
2720
#endif
2721
2722
return 2 * (EVP_CIPHER_key_length(c) +
2723
EVP_MD_size(h) +
2724
EVP_CIPHER_iv_length(c));
2725
}
2726
2727
2728
unsigned int tls_capabilities(void *tls_ctx)
2729
{
2730
return 0;
2731
}
2732
2733
2734
int tls_connection_set_ia(void *tls_ctx, struct tls_connection *conn,
2735
int tls_ia)
2736
{
2737
return -1;
2738
}
2739
2740
2741
struct wpabuf * tls_connection_ia_send_phase_finished(
2742
void *tls_ctx, struct tls_connection *conn, int final)
2743
{
2744
return NULL;
2745
}
2746
2747
2748
int tls_connection_ia_final_phase_finished(void *tls_ctx,
2749
struct tls_connection *conn)
2750
{
2751
return -1;
2752
}
2753
2754
2755
int tls_connection_ia_permute_inner_secret(void *tls_ctx,
2756
struct tls_connection *conn,
2757
const u8 *key, size_t key_len)
2758
{
2759
return -1;
2760
}
2761
2762
2763
#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
2764
/* Pre-shared secred requires a patch to openssl, so this function is
2765
* commented out unless explicitly needed for EAP-FAST in order to be able to
2766
* build this file with unmodified openssl. */
2767
2768
static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
2769
STACK_OF(SSL_CIPHER) *peer_ciphers,
2770
SSL_CIPHER **cipher, void *arg)
2771
{
2772
struct tls_connection *conn = arg;
2773
int ret;
2774
2775
if (conn == NULL || conn->session_ticket_cb == NULL)
2776
return 0;
2777
2778
ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
2779
conn->session_ticket,
2780
conn->session_ticket_len,
2781
s->s3->client_random,
2782
s->s3->server_random, secret);
2783
os_free(conn->session_ticket);
2784
conn->session_ticket = NULL;
2785
2786
if (ret <= 0)
2787
return 0;
2788
2789
*secret_len = SSL_MAX_MASTER_KEY_LENGTH;
2790
return 1;
2791
}
2792
2793
2794
#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
2795
static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data,
2796
int len, void *arg)
2797
{
2798
struct tls_connection *conn = arg;
2799
2800
if (conn == NULL || conn->session_ticket_cb == NULL)
2801
return 0;
2802
2803
wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len);
2804
2805
os_free(conn->session_ticket);
2806
conn->session_ticket = NULL;
2807
2808
wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
2809
"extension", data, len);
2810
2811
conn->session_ticket = os_malloc(len);
2812
if (conn->session_ticket == NULL)
2813
return 0;
2814
2815
os_memcpy(conn->session_ticket, data, len);
2816
conn->session_ticket_len = len;
2817
2818
return 1;
2819
}
2820
#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2821
#ifdef SSL_OP_NO_TICKET
2822
static void tls_hello_ext_cb(SSL *s, int client_server, int type,
2823
unsigned char *data, int len, void *arg)
2824
{
2825
struct tls_connection *conn = arg;
2826
2827
if (conn == NULL || conn->session_ticket_cb == NULL)
2828
return;
2829
2830
wpa_printf(MSG_DEBUG, "OpenSSL: %s: type=%d length=%d", __func__,
2831
type, len);
2832
2833
if (type == TLSEXT_TYPE_session_ticket && !client_server) {
2834
os_free(conn->session_ticket);
2835
conn->session_ticket = NULL;
2836
2837
wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
2838
"extension", data, len);
2839
conn->session_ticket = os_malloc(len);
2840
if (conn->session_ticket == NULL)
2841
return;
2842
2843
os_memcpy(conn->session_ticket, data, len);
2844
conn->session_ticket_len = len;
2845
}
2846
}
2847
#else /* SSL_OP_NO_TICKET */
2848
static int tls_hello_ext_cb(SSL *s, TLS_EXTENSION *ext, void *arg)
2849
{
2850
struct tls_connection *conn = arg;
2851
2852
if (conn == NULL || conn->session_ticket_cb == NULL)
2853
return 0;
2854
2855
wpa_printf(MSG_DEBUG, "OpenSSL: %s: type=%d length=%d", __func__,
2856
ext->type, ext->length);
2857
2858
os_free(conn->session_ticket);
2859
conn->session_ticket = NULL;
2860
2861
if (ext->type == 35) {
2862
wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
2863
"extension", ext->data, ext->length);
2864
conn->session_ticket = os_malloc(ext->length);
2865
if (conn->session_ticket == NULL)
2866
return SSL_AD_INTERNAL_ERROR;
2867
2868
os_memcpy(conn->session_ticket, ext->data, ext->length);
2869
conn->session_ticket_len = ext->length;
2870
}
2871
2872
return 0;
2873
}
2874
#endif /* SSL_OP_NO_TICKET */
2875
#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2876
#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
2877
2878
2879
int tls_connection_set_session_ticket_cb(void *tls_ctx,
2880
struct tls_connection *conn,
2881
tls_session_ticket_cb cb,
2882
void *ctx)
2883
{
2884
#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
2885
conn->session_ticket_cb = cb;
2886
conn->session_ticket_cb_ctx = ctx;
2887
2888
if (cb) {
2889
if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
2890
conn) != 1)
2891
return -1;
2892
#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
2893
SSL_set_session_ticket_ext_cb(conn->ssl,
2894
tls_session_ticket_ext_cb, conn);
2895
#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2896
#ifdef SSL_OP_NO_TICKET
2897
SSL_set_tlsext_debug_callback(conn->ssl, tls_hello_ext_cb);
2898
SSL_set_tlsext_debug_arg(conn->ssl, conn);
2899
#else /* SSL_OP_NO_TICKET */
2900
if (SSL_set_hello_extension_cb(conn->ssl, tls_hello_ext_cb,
2901
conn) != 1)
2902
return -1;
2903
#endif /* SSL_OP_NO_TICKET */
2904
#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2905
} else {
2906
if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
2907
return -1;
2908
#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
2909
SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL);
2910
#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2911
#ifdef SSL_OP_NO_TICKET
2912
SSL_set_tlsext_debug_callback(conn->ssl, NULL);
2913
SSL_set_tlsext_debug_arg(conn->ssl, conn);
2914
#else /* SSL_OP_NO_TICKET */
2915
if (SSL_set_hello_extension_cb(conn->ssl, NULL, NULL) != 1)
2916
return -1;
2917
#endif /* SSL_OP_NO_TICKET */
2918
#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
2919
}
2920
2921
return 0;
2922
#else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
2923
return -1;
2924
#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
2925
}
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Version: 2.0.1