2
* WPA Supplicant / SSL/TLS interface functions for openssl
3
* Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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* Alternatively, this software may be distributed under the terms of BSD
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* See README and COPYING for more details.
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#ifndef CONFIG_SMARTCARD
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#ifndef OPENSSL_NO_ENGINE
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#define OPENSSL_NO_ENGINE
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#include <openssl/ssl.h>
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#include <openssl/err.h>
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#include <openssl/pkcs12.h>
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#include <openssl/x509v3.h>
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#ifndef OPENSSL_NO_ENGINE
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#include <openssl/engine.h>
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#endif /* OPENSSL_NO_ENGINE */
34
#if OPENSSL_VERSION_NUMBER >= 0x0090800fL
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#define OPENSSL_d2i_TYPE const unsigned char **
37
#define OPENSSL_d2i_TYPE unsigned char **
40
static int tls_openssl_ref_count = 0;
42
struct tls_connection {
44
BIO *ssl_in, *ssl_out;
45
#ifndef OPENSSL_NO_ENGINE
46
ENGINE *engine; /* functional reference to the engine */
47
EVP_PKEY *private_key; /* the private key if using engine */
48
#endif /* OPENSSL_NO_ENGINE */
49
char *subject_match, *altsubject_match;
50
int read_alerts, write_alerts, failed;
52
u8 *pre_shared_secret;
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size_t pre_shared_secret_len;
57
#ifdef CONFIG_NO_STDOUT_DEBUG
59
static void _tls_show_errors(void)
63
while ((err = ERR_get_error())) {
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/* Just ignore the errors, since stdout is disabled */
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#define tls_show_errors(l, f, t) _tls_show_errors()
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#else /* CONFIG_NO_STDOUT_DEBUG */
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static void tls_show_errors(int level, const char *func, const char *txt)
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wpa_printf(level, "OpenSSL: %s - %s %s",
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func, txt, ERR_error_string(ERR_get_error(), NULL));
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while ((err = ERR_get_error())) {
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wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
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ERR_error_string(err, NULL));
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#endif /* CONFIG_NO_STDOUT_DEBUG */
87
#ifdef CONFIG_NATIVE_WINDOWS
89
/* Windows CryptoAPI and access to certificate stores */
92
#ifdef __MINGW32_VERSION
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* MinGW does not yet include all the needed definitions for CryptoAPI, so
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* define here whatever extra is needed.
97
#define CALG_SSL3_SHAMD5 (ALG_CLASS_HASH | ALG_TYPE_ANY | ALG_SID_SSL3SHAMD5)
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#define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
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#define CERT_STORE_READONLY_FLAG 0x00008000
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#define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
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#define CRYPT_ACQUIRE_COMPARE_KEY_FLAG 0x00000004
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(*CryptAcquireCertificatePrivateKey)(PCCERT_CONTEXT pCert, DWORD dwFlags,
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void *pvReserved, HCRYPTPROV *phCryptProv,
106
DWORD *pdwKeySpec, BOOL *pfCallerFreeProv)
107
= NULL; /* to be loaded from crypt32.dll */
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static PCCERT_CONTEXT WINAPI
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(*CertEnumCertificatesInStore)(HCERTSTORE hCertStore,
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PCCERT_CONTEXT pPrevCertContext)
112
= NULL; /* to be loaded from crypt32.dll */
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static int mingw_load_crypto_func(void)
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/* MinGW does not yet have full CryptoAPI support, so load the needed
121
if (CryptAcquireCertificatePrivateKey)
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dll = LoadLibrary("crypt32");
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wpa_printf(MSG_DEBUG, "CryptoAPI: Could not load crypt32 "
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CryptAcquireCertificatePrivateKey = GetProcAddress(
132
dll, "CryptAcquireCertificatePrivateKey");
133
if (CryptAcquireCertificatePrivateKey == NULL) {
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wpa_printf(MSG_DEBUG, "CryptoAPI: Could not get "
135
"CryptAcquireCertificatePrivateKey() address from "
140
CertEnumCertificatesInStore = (void *) GetProcAddress(
141
dll, "CertEnumCertificatesInStore");
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if (CertEnumCertificatesInStore == NULL) {
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wpa_printf(MSG_DEBUG, "CryptoAPI: Could not get "
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"CertEnumCertificatesInStore() address from "
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#else /* __MINGW32_VERSION */
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static int mingw_load_crypto_func(void)
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#endif /* __MINGW32_VERSION */
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struct cryptoapi_rsa_data {
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const CERT_CONTEXT *cert;
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HCRYPTPROV crypt_prov;
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BOOL free_crypt_prov;
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static void cryptoapi_error(const char *msg)
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wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
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msg, (unsigned int) GetLastError());
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static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
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unsigned char *to, RSA *rsa, int padding)
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wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
185
static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
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unsigned char *to, RSA *rsa, int padding)
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wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
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static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
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unsigned char *to, RSA *rsa, int padding)
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struct cryptoapi_rsa_data *priv =
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(struct cryptoapi_rsa_data *) rsa->meth->app_data;
199
DWORD hash_size, len, i;
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unsigned char *buf = NULL;
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RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
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ERR_R_PASSED_NULL_PARAMETER);
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if (padding != RSA_PKCS1_PADDING) {
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RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
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RSA_R_UNKNOWN_PADDING_TYPE);
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if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
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wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
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RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
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RSA_R_INVALID_MESSAGE_LENGTH);
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if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
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cryptoapi_error("CryptCreateHash failed");
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len = sizeof(hash_size);
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if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
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cryptoapi_error("CryptGetHashParam failed");
236
if ((int) hash_size != flen) {
237
wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
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(unsigned) hash_size, flen);
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RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
240
RSA_R_INVALID_MESSAGE_LENGTH);
243
if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
244
cryptoapi_error("CryptSetHashParam failed");
249
buf = os_malloc(len);
251
RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
255
if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
256
cryptoapi_error("CryptSignHash failed");
260
for (i = 0; i < len; i++)
261
to[i] = buf[len - i - 1];
266
CryptDestroyHash(hash);
272
static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
273
unsigned char *to, RSA *rsa, int padding)
275
wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
280
static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
284
if (priv->crypt_prov && priv->free_crypt_prov)
285
CryptReleaseContext(priv->crypt_prov, 0);
287
CertFreeCertificateContext(priv->cert);
292
static int cryptoapi_finish(RSA *rsa)
294
cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
295
os_free((void *) rsa->meth);
301
static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
304
const CERT_CONTEXT *ret = NULL;
306
cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
307
store | CERT_STORE_OPEN_EXISTING_FLAG |
308
CERT_STORE_READONLY_FLAG, L"MY");
310
cryptoapi_error("Failed to open 'My system store'");
314
if (strncmp(name, "cert://", 7) == 0) {
315
unsigned short wbuf[255];
316
MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
317
ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
319
0, CERT_FIND_SUBJECT_STR,
321
} else if (strncmp(name, "hash://", 7) == 0) {
322
CRYPT_HASH_BLOB blob;
324
const char *hash = name + 7;
327
len = os_strlen(hash) / 2;
328
buf = os_malloc(len);
329
if (buf && hexstr2bin(hash, buf, len) == 0) {
332
ret = CertFindCertificateInStore(cs,
341
CertCloseStore(cs, 0);
347
static int tls_cryptoapi_cert(SSL *ssl, const char *name)
350
RSA *rsa = NULL, *pub_rsa;
351
struct cryptoapi_rsa_data *priv;
352
RSA_METHOD *rsa_meth;
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(strncmp(name, "cert://", 7) != 0 &&
356
strncmp(name, "hash://", 7) != 0))
359
priv = os_zalloc(sizeof(*priv));
360
rsa_meth = os_zalloc(sizeof(*rsa_meth));
361
if (priv == NULL || rsa_meth == NULL) {
362
wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
363
"for CryptoAPI RSA method");
369
priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
370
if (priv->cert == NULL) {
371
priv->cert = cryptoapi_find_cert(
372
name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
374
if (priv->cert == NULL) {
375
wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
380
cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &priv->cert->pbCertEncoded,
381
priv->cert->cbCertEncoded);
383
wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
388
if (mingw_load_crypto_func())
391
if (!CryptAcquireCertificatePrivateKey(priv->cert,
392
CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
393
NULL, &priv->crypt_prov,
395
&priv->free_crypt_prov)) {
396
cryptoapi_error("Failed to acquire a private key for the "
401
rsa_meth->name = "Microsoft CryptoAPI RSA Method";
402
rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
403
rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
404
rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
405
rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
406
rsa_meth->finish = cryptoapi_finish;
407
rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
408
rsa_meth->app_data = (char *) priv;
412
SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
413
ERR_R_MALLOC_FAILURE);
417
if (!SSL_use_certificate(ssl, cert)) {
422
pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
426
rsa->n = BN_dup(pub_rsa->n);
427
rsa->e = BN_dup(pub_rsa->e);
428
if (!RSA_set_method(rsa, rsa_meth))
431
if (!SSL_use_RSAPrivateKey(ssl, rsa))
444
cryptoapi_free_data(priv);
450
static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
453
PCCERT_CONTEXT ctx = NULL;
461
if (mingw_load_crypto_func())
464
if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
469
wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
472
wsprintf(wstore, L"%S", store);
473
cs = CertOpenSystemStore(0, wstore);
476
cs = CertOpenSystemStore(0, store);
479
wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
480
"'%s': error=%d", __func__, store,
481
(int) GetLastError());
485
while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
486
cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &ctx->pbCertEncoded,
489
wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
490
"X509 DER encoding for CA cert");
494
X509_NAME_oneline(X509_get_subject_name(cert), buf,
496
wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
497
"system certificate store: subject='%s'", buf);
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if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
500
tls_show_errors(MSG_WARNING, __func__,
501
"Failed to add ca_cert to OpenSSL "
502
"certificate store");
508
if (!CertCloseStore(cs, 0)) {
509
wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
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"'%s': error=%d", __func__, name + 13,
511
(int) GetLastError());
518
#else /* CONFIG_NATIVE_WINDOWS */
520
static int tls_cryptoapi_cert(SSL *ssl, const char *name)
525
#endif /* CONFIG_NATIVE_WINDOWS */
528
static void ssl_info_cb(const SSL *ssl, int where, int ret)
533
wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
534
w = where & ~SSL_ST_MASK;
535
if (w & SSL_ST_CONNECT)
537
else if (w & SSL_ST_ACCEPT)
542
if (where & SSL_CB_LOOP) {
543
wpa_printf(MSG_DEBUG, "SSL: %s:%s",
544
str, SSL_state_string_long(ssl));
545
} else if (where & SSL_CB_ALERT) {
546
wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
547
where & SSL_CB_READ ?
548
"read (remote end reported an error)" :
549
"write (local SSL3 detected an error)",
550
SSL_alert_type_string_long(ret),
551
SSL_alert_desc_string_long(ret));
552
if ((ret >> 8) == SSL3_AL_FATAL) {
553
struct tls_connection *conn =
554
SSL_get_app_data((SSL *) ssl);
555
if (where & SSL_CB_READ)
558
conn->write_alerts++;
560
} else if (where & SSL_CB_EXIT && ret <= 0) {
561
wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
562
str, ret == 0 ? "failed" : "error",
563
SSL_state_string_long(ssl));
568
#ifndef OPENSSL_NO_ENGINE
570
* tls_engine_load_dynamic_generic - load any openssl engine
571
* @pre: an array of commands and values that load an engine initialized
572
* in the engine specific function
573
* @post: an array of commands and values that initialize an already loaded
574
* engine (or %NULL if not required)
575
* @id: the engine id of the engine to load (only required if post is not %NULL
577
* This function is a generic function that loads any openssl engine.
579
* Returns: 0 on success, -1 on failure
581
static int tls_engine_load_dynamic_generic(const char *pre[],
582
const char *post[], const char *id)
585
const char *dynamic_id = "dynamic";
587
engine = ENGINE_by_id(id);
590
wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
596
engine = ENGINE_by_id(dynamic_id);
597
if (engine == NULL) {
598
wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
600
ERR_error_string(ERR_get_error(), NULL));
604
/* Perform the pre commands. This will load the engine. */
605
while (pre && pre[0]) {
606
wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
607
if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
608
wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
609
"%s %s [%s]", pre[0], pre[1],
610
ERR_error_string(ERR_get_error(), NULL));
618
* Free the reference to the "dynamic" engine. The loaded engine can
619
* now be looked up using ENGINE_by_id().
623
engine = ENGINE_by_id(id);
624
if (engine == NULL) {
625
wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
626
id, ERR_error_string(ERR_get_error(), NULL));
630
while (post && post[0]) {
631
wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
632
if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
633
wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
634
" %s %s [%s]", post[0], post[1],
635
ERR_error_string(ERR_get_error(), NULL));
636
ENGINE_remove(engine);
649
* tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
650
* @pkcs11_so_path: pksc11_so_path from the configuration
651
* @pcks11_module_path: pkcs11_module_path from the configuration
653
static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
654
const char *pkcs11_module_path)
656
char *engine_id = "pkcs11";
657
const char *pre_cmd[] = {
658
"SO_PATH", NULL /* pkcs11_so_path */,
659
"ID", NULL /* engine_id */,
661
/* "NO_VCHECK", "1", */
665
const char *post_cmd[] = {
666
"MODULE_PATH", NULL /* pkcs11_module_path */,
670
if (!pkcs11_so_path || !pkcs11_module_path)
673
pre_cmd[1] = pkcs11_so_path;
674
pre_cmd[3] = engine_id;
675
post_cmd[1] = pkcs11_module_path;
677
wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
680
return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
685
* tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
686
* @opensc_so_path: opensc_so_path from the configuration
688
static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
690
char *engine_id = "opensc";
691
const char *pre_cmd[] = {
692
"SO_PATH", NULL /* opensc_so_path */,
693
"ID", NULL /* engine_id */,
702
pre_cmd[1] = opensc_so_path;
703
pre_cmd[3] = engine_id;
705
wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
708
return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
710
#endif /* OPENSSL_NO_ENGINE */
713
void * tls_init(const struct tls_config *conf)
717
if (tls_openssl_ref_count == 0) {
718
SSL_load_error_strings();
720
/* TODO: if /dev/urandom is available, PRNG is seeded
721
* automatically. If this is not the case, random data should
726
#endif /* PKCS12_FUNCS */
728
tls_openssl_ref_count++;
730
ssl = SSL_CTX_new(TLSv1_method());
734
SSL_CTX_set_info_callback(ssl, ssl_info_cb);
736
#ifndef OPENSSL_NO_ENGINE
738
(conf->opensc_engine_path || conf->pkcs11_engine_path ||
739
conf->pkcs11_module_path)) {
740
wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine");
741
ERR_load_ENGINE_strings();
742
ENGINE_load_dynamic();
744
if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
745
tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
746
conf->pkcs11_module_path)) {
751
#endif /* OPENSSL_NO_ENGINE */
757
void tls_deinit(void *ssl_ctx)
759
SSL_CTX *ssl = ssl_ctx;
762
tls_openssl_ref_count--;
763
if (tls_openssl_ref_count == 0) {
764
#ifndef OPENSSL_NO_ENGINE
766
#endif /* OPENSSL_NO_ENGINE */
767
CRYPTO_cleanup_all_ex_data();
775
static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
776
const char *pin, const char *key_id)
778
#ifndef OPENSSL_NO_ENGINE
780
if (engine_id == NULL) {
781
wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
785
wpa_printf(MSG_ERROR, "ENGINE: Smartcard PIN not set");
788
if (key_id == NULL) {
789
wpa_printf(MSG_ERROR, "ENGINE: Key Id not set");
794
conn->engine = ENGINE_by_id(engine_id);
796
wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
797
engine_id, ERR_error_string(ERR_get_error(), NULL));
800
if (ENGINE_init(conn->engine) != 1) {
801
wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
802
"(engine: %s) [%s]", engine_id,
803
ERR_error_string(ERR_get_error(), NULL));
806
wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
808
if (ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
809
wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
810
ERR_error_string(ERR_get_error(), NULL));
813
conn->private_key = ENGINE_load_private_key(conn->engine,
815
if (!conn->private_key) {
816
wpa_printf(MSG_ERROR, "ENGINE: cannot load private key with id"
817
" '%s' [%s]", key_id,
818
ERR_error_string(ERR_get_error(), NULL));
819
ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
826
ENGINE_free(conn->engine);
830
if (conn->private_key) {
831
EVP_PKEY_free(conn->private_key);
832
conn->private_key = NULL;
836
#else /* OPENSSL_NO_ENGINE */
838
#endif /* OPENSSL_NO_ENGINE */
842
static void tls_engine_deinit(struct tls_connection *conn)
844
#ifndef OPENSSL_NO_ENGINE
845
wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
846
if (conn->private_key) {
847
EVP_PKEY_free(conn->private_key);
848
conn->private_key = NULL;
851
ENGINE_finish(conn->engine);
854
#endif /* OPENSSL_NO_ENGINE */
858
int tls_get_errors(void *ssl_ctx)
863
while ((err = ERR_get_error())) {
864
wpa_printf(MSG_INFO, "TLS - SSL error: %s",
865
ERR_error_string(err, NULL));
872
struct tls_connection * tls_connection_init(void *ssl_ctx)
874
SSL_CTX *ssl = ssl_ctx;
875
struct tls_connection *conn;
877
conn = os_zalloc(sizeof(*conn));
880
conn->ssl = SSL_new(ssl);
881
if (conn->ssl == NULL) {
882
tls_show_errors(MSG_INFO, __func__,
883
"Failed to initialize new SSL connection");
888
SSL_set_app_data(conn->ssl, conn);
889
SSL_set_options(conn->ssl,
890
SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
891
SSL_OP_SINGLE_DH_USE);
893
conn->ssl_in = BIO_new(BIO_s_mem());
895
tls_show_errors(MSG_INFO, __func__,
896
"Failed to create a new BIO for ssl_in");
902
conn->ssl_out = BIO_new(BIO_s_mem());
903
if (!conn->ssl_out) {
904
tls_show_errors(MSG_INFO, __func__,
905
"Failed to create a new BIO for ssl_out");
907
BIO_free(conn->ssl_in);
912
SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
918
void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
922
os_free(conn->pre_shared_secret);
924
tls_engine_deinit(conn);
925
os_free(conn->subject_match);
926
os_free(conn->altsubject_match);
931
int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
933
return conn ? SSL_is_init_finished(conn->ssl) : 0;
937
int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
942
/* Shutdown previous TLS connection without notifying the peer
943
* because the connection was already terminated in practice
944
* and "close notify" shutdown alert would confuse AS. */
945
SSL_set_quiet_shutdown(conn->ssl, 1);
946
SSL_shutdown(conn->ssl);
951
static int tls_match_altsubject_component(X509 *cert, int type,
952
const char *value, size_t len)
958
ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
960
for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
961
gen = sk_GENERAL_NAME_value(ext, i);
962
if (gen->type != type)
964
if (os_strlen((char *) gen->d.ia5->data) == len &&
965
os_memcmp(value, gen->d.ia5->data, len) == 0)
973
static int tls_match_altsubject(X509 *cert, const char *match)
976
const char *pos, *end;
981
if (os_strncmp(pos, "EMAIL:", 6) == 0) {
984
} else if (os_strncmp(pos, "DNS:", 4) == 0) {
987
} else if (os_strncmp(pos, "URI:", 4) == 0) {
991
wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
995
end = os_strchr(pos, ';');
997
if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
998
os_strncmp(end + 1, "DNS:", 4) == 0 ||
999
os_strncmp(end + 1, "URI:", 4) == 0)
1001
end = os_strchr(end + 1, ';');
1006
len = os_strlen(pos);
1007
if (tls_match_altsubject_component(cert, type, pos, len) > 0)
1016
static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
1022
struct tls_connection *conn;
1023
char *match, *altmatch;
1025
err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
1026
err = X509_STORE_CTX_get_error(x509_ctx);
1027
depth = X509_STORE_CTX_get_error_depth(x509_ctx);
1028
ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
1029
SSL_get_ex_data_X509_STORE_CTX_idx());
1030
X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
1032
conn = SSL_get_app_data(ssl);
1033
match = conn ? conn->subject_match : NULL;
1034
altmatch = conn ? conn->altsubject_match : NULL;
1036
if (!preverify_ok) {
1037
wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
1038
" error %d (%s) depth %d for '%s'", err,
1039
X509_verify_cert_error_string(err), depth, buf);
1041
wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - "
1042
"preverify_ok=%d err=%d (%s) depth=%d buf='%s'",
1044
X509_verify_cert_error_string(err), depth, buf);
1045
if (depth == 0 && match && os_strstr(buf, match) == NULL) {
1046
wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
1047
"match with '%s'", buf, match);
1049
} else if (depth == 0 && altmatch &&
1050
!tls_match_altsubject(err_cert, altmatch)) {
1051
wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
1052
"'%s' not found", altmatch);
1057
return preverify_ok;
1061
#ifndef OPENSSL_NO_STDIO
1062
static int tls_load_ca_der(void *_ssl_ctx, const char *ca_cert)
1064
SSL_CTX *ssl_ctx = _ssl_ctx;
1065
X509_LOOKUP *lookup;
1068
lookup = X509_STORE_add_lookup(ssl_ctx->cert_store,
1069
X509_LOOKUP_file());
1070
if (lookup == NULL) {
1071
tls_show_errors(MSG_WARNING, __func__,
1072
"Failed add lookup for X509 store");
1076
if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
1077
unsigned long err = ERR_peek_error();
1078
tls_show_errors(MSG_WARNING, __func__,
1079
"Failed load CA in DER format");
1080
if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1081
ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1082
wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1083
"cert already in hash table error",
1091
#endif /* OPENSSL_NO_STDIO */
1094
static int tls_connection_ca_cert(void *_ssl_ctx, struct tls_connection *conn,
1095
const char *ca_cert, const u8 *ca_cert_blob,
1096
size_t ca_cert_blob_len, const char *ca_path)
1098
SSL_CTX *ssl_ctx = _ssl_ctx;
1101
X509 *cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &ca_cert_blob,
1104
tls_show_errors(MSG_WARNING, __func__,
1105
"Failed to parse ca_cert_blob");
1109
if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
1110
unsigned long err = ERR_peek_error();
1111
tls_show_errors(MSG_WARNING, __func__,
1112
"Failed to add ca_cert_blob to "
1113
"certificate store");
1114
if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
1115
ERR_GET_REASON(err) ==
1116
X509_R_CERT_ALREADY_IN_HASH_TABLE) {
1117
wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
1118
"cert already in hash table error",
1126
wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
1127
"to certificate store", __func__);
1128
SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1132
#ifdef CONFIG_NATIVE_WINDOWS
1133
if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
1135
wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
1136
"system certificate store");
1137
SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1140
#endif /* CONFIG_NATIVE_WINDOWS */
1142
if (ca_cert || ca_path) {
1143
#ifndef OPENSSL_NO_STDIO
1144
if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
1146
tls_show_errors(MSG_WARNING, __func__,
1147
"Failed to load root certificates");
1149
tls_load_ca_der(ssl_ctx, ca_cert) == 0) {
1150
wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
1151
"DER format CA certificate",
1156
wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1157
"certificate(s) loaded");
1158
tls_get_errors(ssl_ctx);
1160
SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
1161
#else /* OPENSSL_NO_STDIO */
1162
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
1165
#endif /* OPENSSL_NO_STDIO */
1167
/* No ca_cert configured - do not try to verify server
1169
SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
1176
static int tls_global_ca_cert(SSL_CTX *ssl_ctx, const char *ca_cert)
1179
if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
1181
tls_show_errors(MSG_WARNING, __func__,
1182
"Failed to load root certificates");
1186
wpa_printf(MSG_DEBUG, "TLS: Trusted root "
1187
"certificate(s) loaded");
1189
#ifndef OPENSSL_NO_STDIO
1190
/* Add the same CAs to the client certificate requests */
1191
SSL_CTX_set_client_CA_list(ssl_ctx,
1192
SSL_load_client_CA_file(ca_cert));
1193
#endif /* OPENSSL_NO_STDIO */
1200
int tls_global_set_verify(void *ssl_ctx, int check_crl)
1205
X509_STORE *cs = SSL_CTX_get_cert_store(ssl_ctx);
1207
tls_show_errors(MSG_INFO, __func__, "Failed to get "
1208
"certificate store when enabling "
1212
flags = X509_V_FLAG_CRL_CHECK;
1214
flags |= X509_V_FLAG_CRL_CHECK_ALL;
1215
X509_STORE_set_flags(cs, flags);
1221
static int tls_connection_set_subject_match(struct tls_connection *conn,
1222
const char *subject_match,
1223
const char *altsubject_match)
1225
os_free(conn->subject_match);
1226
conn->subject_match = NULL;
1227
if (subject_match) {
1228
conn->subject_match = os_strdup(subject_match);
1229
if (conn->subject_match == NULL)
1233
os_free(conn->altsubject_match);
1234
conn->altsubject_match = NULL;
1235
if (altsubject_match) {
1236
conn->altsubject_match = os_strdup(altsubject_match);
1237
if (conn->altsubject_match == NULL)
1245
int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
1252
SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
1253
SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
1254
SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
1256
SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
1259
SSL_set_accept_state(conn->ssl);
1265
static int tls_connection_client_cert(struct tls_connection *conn,
1266
const char *client_cert,
1267
const u8 *client_cert_blob,
1268
size_t client_cert_blob_len)
1270
if (client_cert == NULL && client_cert_blob == NULL)
1273
if (client_cert_blob &&
1274
SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
1275
client_cert_blob_len) == 1) {
1276
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
1279
} else if (client_cert_blob) {
1280
tls_show_errors(MSG_DEBUG, __func__,
1281
"SSL_use_certificate_ASN1 failed");
1284
if (client_cert == NULL)
1287
#ifndef OPENSSL_NO_STDIO
1288
if (SSL_use_certificate_file(conn->ssl, client_cert,
1289
SSL_FILETYPE_ASN1) == 1) {
1290
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
1294
tls_show_errors(MSG_DEBUG, __func__,
1295
"SSL_use_certificate_file (DER) failed");
1298
if (SSL_use_certificate_file(conn->ssl, client_cert,
1299
SSL_FILETYPE_PEM) == 1) {
1300
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
1304
tls_show_errors(MSG_DEBUG, __func__,
1305
"SSL_use_certificate_file (PEM) failed");
1307
#else /* OPENSSL_NO_STDIO */
1308
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
1309
#endif /* OPENSSL_NO_STDIO */
1315
static int tls_global_client_cert(SSL_CTX *ssl_ctx, const char *client_cert)
1317
#ifndef OPENSSL_NO_STDIO
1318
if (client_cert == NULL)
1321
if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
1322
SSL_FILETYPE_ASN1) != 1 &&
1323
SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
1324
SSL_FILETYPE_PEM) != 1) {
1325
tls_show_errors(MSG_INFO, __func__,
1326
"Failed to load client certificate");
1330
#else /* OPENSSL_NO_STDIO */
1331
if (client_cert == NULL)
1333
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
1335
#endif /* OPENSSL_NO_STDIO */
1339
static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
1341
if (password == NULL) {
1344
os_strlcpy(buf, (char *) password, size);
1345
return os_strlen(buf);
1350
static int tls_parse_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, PKCS12 *p12,
1355
STACK_OF(X509) *certs;
1362
if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
1363
tls_show_errors(MSG_DEBUG, __func__,
1364
"Failed to parse PKCS12 file");
1368
wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
1371
X509_NAME_oneline(X509_get_subject_name(cert), buf,
1373
wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
1374
"subject='%s'", buf);
1376
if (SSL_use_certificate(ssl, cert) != 1)
1379
if (SSL_CTX_use_certificate(ssl_ctx, cert) != 1)
1386
wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
1388
if (SSL_use_PrivateKey(ssl, pkey) != 1)
1391
if (SSL_CTX_use_PrivateKey(ssl_ctx, pkey) != 1)
1394
EVP_PKEY_free(pkey);
1398
while ((cert = sk_X509_pop(certs)) != NULL) {
1399
X509_NAME_oneline(X509_get_subject_name(cert), buf,
1401
wpa_printf(MSG_DEBUG, "TLS: additional certificate"
1402
" from PKCS12: subject='%s'", buf);
1404
* There is no SSL equivalent for the chain cert - so
1405
* always add it to the context...
1407
if (SSL_CTX_add_extra_chain_cert(ssl_ctx, cert) != 1) {
1412
sk_X509_free(certs);
1418
tls_get_errors(ssl_ctx);
1422
#endif /* PKCS12_FUNCS */
1425
static int tls_read_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, const char *private_key,
1432
f = fopen(private_key, "rb");
1436
p12 = d2i_PKCS12_fp(f, NULL);
1440
tls_show_errors(MSG_INFO, __func__,
1441
"Failed to use PKCS#12 file");
1445
return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
1447
#else /* PKCS12_FUNCS */
1448
wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
1451
#endif /* PKCS12_FUNCS */
1455
static int tls_read_pkcs12_blob(SSL_CTX *ssl_ctx, SSL *ssl,
1456
const u8 *blob, size_t len, const char *passwd)
1461
p12 = d2i_PKCS12(NULL, (OPENSSL_d2i_TYPE) &blob, len);
1463
tls_show_errors(MSG_INFO, __func__,
1464
"Failed to use PKCS#12 blob");
1468
return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
1470
#else /* PKCS12_FUNCS */
1471
wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
1474
#endif /* PKCS12_FUNCS */
1478
static int tls_connection_engine_private_key(struct tls_connection *conn)
1480
#ifndef OPENSSL_NO_ENGINE
1481
if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
1482
tls_show_errors(MSG_ERROR, __func__,
1483
"ENGINE: cannot use private key for TLS");
1486
if (!SSL_check_private_key(conn->ssl)) {
1487
tls_show_errors(MSG_INFO, __func__,
1488
"Private key failed verification");
1492
#else /* OPENSSL_NO_ENGINE */
1493
wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
1494
"engine support was not compiled in");
1496
#endif /* OPENSSL_NO_ENGINE */
1500
static int tls_connection_private_key(void *_ssl_ctx,
1501
struct tls_connection *conn,
1502
const char *private_key,
1503
const char *private_key_passwd,
1504
const u8 *private_key_blob,
1505
size_t private_key_blob_len)
1507
SSL_CTX *ssl_ctx = _ssl_ctx;
1511
if (private_key == NULL && private_key_blob == NULL)
1514
if (private_key_passwd) {
1515
passwd = os_strdup(private_key_passwd);
1521
SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
1522
SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
1525
while (private_key_blob) {
1526
if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
1527
(u8 *) private_key_blob,
1528
private_key_blob_len) == 1) {
1529
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
1530
"ASN1(EVP_PKEY_RSA) --> OK");
1534
tls_show_errors(MSG_DEBUG, __func__,
1535
"SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA)"
1539
if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
1540
(u8 *) private_key_blob,
1541
private_key_blob_len) == 1) {
1542
wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
1543
"ASN1(EVP_PKEY_DSA) --> OK");
1547
tls_show_errors(MSG_DEBUG, __func__,
1548
"SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA)"
1552
if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
1553
(u8 *) private_key_blob,
1554
private_key_blob_len) == 1) {
1555
wpa_printf(MSG_DEBUG, "OpenSSL: "
1556
"SSL_use_RSAPrivateKey_ASN1 --> OK");
1560
tls_show_errors(MSG_DEBUG, __func__,
1561
"SSL_use_RSAPrivateKey_ASN1 failed");
1564
if (tls_read_pkcs12_blob(ssl_ctx, conn->ssl, private_key_blob,
1565
private_key_blob_len, passwd) == 0) {
1566
wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
1575
while (!ok && private_key) {
1576
#ifndef OPENSSL_NO_STDIO
1577
if (SSL_use_PrivateKey_file(conn->ssl, private_key,
1578
SSL_FILETYPE_ASN1) == 1) {
1579
wpa_printf(MSG_DEBUG, "OpenSSL: "
1580
"SSL_use_PrivateKey_File (DER) --> OK");
1584
tls_show_errors(MSG_DEBUG, __func__,
1585
"SSL_use_PrivateKey_File (DER) "
1589
if (SSL_use_PrivateKey_file(conn->ssl, private_key,
1590
SSL_FILETYPE_PEM) == 1) {
1591
wpa_printf(MSG_DEBUG, "OpenSSL: "
1592
"SSL_use_PrivateKey_File (PEM) --> OK");
1596
tls_show_errors(MSG_DEBUG, __func__,
1597
"SSL_use_PrivateKey_File (PEM) "
1600
#else /* OPENSSL_NO_STDIO */
1601
wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
1603
#endif /* OPENSSL_NO_STDIO */
1605
if (tls_read_pkcs12(ssl_ctx, conn->ssl, private_key, passwd)
1607
wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
1613
if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
1614
wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
1615
"access certificate store --> OK");
1624
wpa_printf(MSG_INFO, "OpenSSL: Failed to load private key");
1630
SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
1633
if (!SSL_check_private_key(conn->ssl)) {
1634
tls_show_errors(MSG_INFO, __func__, "Private key failed "
1639
wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
1644
static int tls_global_private_key(SSL_CTX *ssl_ctx, const char *private_key,
1645
const char *private_key_passwd)
1649
if (private_key == NULL)
1652
if (private_key_passwd) {
1653
passwd = os_strdup(private_key_passwd);
1659
SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
1660
SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
1662
#ifndef OPENSSL_NO_STDIO
1663
SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
1664
SSL_FILETYPE_ASN1) != 1 &&
1665
SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
1666
SSL_FILETYPE_PEM) != 1 &&
1667
#endif /* OPENSSL_NO_STDIO */
1668
tls_read_pkcs12(ssl_ctx, NULL, private_key, passwd)) {
1669
tls_show_errors(MSG_INFO, __func__,
1670
"Failed to load private key");
1677
SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
1679
if (!SSL_CTX_check_private_key(ssl_ctx)) {
1680
tls_show_errors(MSG_INFO, __func__,
1681
"Private key failed verification");
1689
static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
1691
#ifdef OPENSSL_NO_DH
1692
if (dh_file == NULL)
1694
wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
1695
"dh_file specified");
1697
#else /* OPENSSL_NO_DH */
1701
/* TODO: add support for dh_blob */
1702
if (dh_file == NULL)
1707
bio = BIO_new_file(dh_file, "r");
1709
wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
1710
dh_file, ERR_error_string(ERR_get_error(), NULL));
1713
dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
1715
#ifndef OPENSSL_NO_DSA
1716
while (dh == NULL) {
1718
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
1719
" trying to parse as DSA params", dh_file,
1720
ERR_error_string(ERR_get_error(), NULL));
1721
bio = BIO_new_file(dh_file, "r");
1724
dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
1727
wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
1728
"'%s': %s", dh_file,
1729
ERR_error_string(ERR_get_error(), NULL));
1733
wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
1734
dh = DSA_dup_DH(dsa);
1737
wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
1738
"params into DH params");
1743
#endif /* !OPENSSL_NO_DSA */
1745
wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
1750
if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
1751
wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
1753
ERR_error_string(ERR_get_error(), NULL));
1759
#endif /* OPENSSL_NO_DH */
1763
int tls_connection_get_keys(void *ssl_ctx, struct tls_connection *conn,
1764
struct tls_keys *keys)
1768
if (conn == NULL || keys == NULL)
1771
if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL)
1774
os_memset(keys, 0, sizeof(*keys));
1775
keys->master_key = ssl->session->master_key;
1776
keys->master_key_len = ssl->session->master_key_length;
1777
keys->client_random = ssl->s3->client_random;
1778
keys->client_random_len = SSL3_RANDOM_SIZE;
1779
keys->server_random = ssl->s3->server_random;
1780
keys->server_random_len = SSL3_RANDOM_SIZE;
1786
int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
1787
const char *label, int server_random_first,
1788
u8 *out, size_t out_len)
1794
u8 * tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
1795
const u8 *in_data, size_t in_len,
1796
size_t *out_len, u8 **appl_data,
1797
size_t *appl_data_len)
1806
* Give TLS handshake data from the server (if available) to OpenSSL
1810
BIO_write(conn->ssl_in, in_data, in_len) < 0) {
1811
tls_show_errors(MSG_INFO, __func__,
1812
"Handshake failed - BIO_write");
1816
/* Initiate TLS handshake or continue the existing handshake */
1817
res = SSL_connect(conn->ssl);
1819
int err = SSL_get_error(conn->ssl, res);
1820
if (err == SSL_ERROR_WANT_READ)
1821
wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
1823
else if (err == SSL_ERROR_WANT_WRITE)
1824
wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
1827
tls_show_errors(MSG_INFO, __func__, "SSL_connect");
1832
/* Get the TLS handshake data to be sent to the server */
1833
res = BIO_ctrl_pending(conn->ssl_out);
1834
wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
1835
out_data = os_malloc(res == 0 ? 1 : res);
1836
if (out_data == NULL) {
1837
wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
1838
"handshake output (%d bytes)", res);
1839
if (BIO_reset(conn->ssl_out) < 0) {
1840
tls_show_errors(MSG_INFO, __func__,
1841
"BIO_reset failed");
1846
res = res == 0 ? 0 : BIO_read(conn->ssl_out, out_data, res);
1848
tls_show_errors(MSG_INFO, __func__,
1849
"Handshake failed - BIO_read");
1850
if (BIO_reset(conn->ssl_out) < 0) {
1851
tls_show_errors(MSG_INFO, __func__,
1852
"BIO_reset failed");
1859
if (SSL_is_init_finished(conn->ssl) && appl_data) {
1860
*appl_data = os_malloc(in_len);
1862
res = SSL_read(conn->ssl, *appl_data, in_len);
1864
tls_show_errors(MSG_INFO, __func__,
1865
"Failed to read possible "
1866
"Application Data");
1867
os_free(*appl_data);
1870
*appl_data_len = res;
1871
wpa_hexdump_key(MSG_MSGDUMP, "SSL: Application"
1872
" Data in Finish message",
1873
*appl_data, *appl_data_len);
1882
u8 * tls_connection_server_handshake(void *ssl_ctx,
1883
struct tls_connection *conn,
1884
const u8 *in_data, size_t in_len,
1892
BIO_write(conn->ssl_in, in_data, in_len) < 0) {
1893
tls_show_errors(MSG_INFO, __func__,
1894
"Handshake failed - BIO_write");
1898
res = SSL_read(conn->ssl, buf, sizeof(buf));
1900
wpa_printf(MSG_DEBUG, "SSL: Unexpected data from SSL_read "
1904
res = BIO_ctrl_pending(conn->ssl_out);
1905
wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
1906
out_data = os_malloc(res == 0 ? 1 : res);
1907
if (out_data == NULL) {
1908
wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
1909
"handshake output (%d bytes)", res);
1910
if (BIO_reset(conn->ssl_out) < 0) {
1911
tls_show_errors(MSG_INFO, __func__,
1912
"BIO_reset failed");
1917
res = res == 0 ? 0 : BIO_read(conn->ssl_out, out_data, res);
1919
tls_show_errors(MSG_INFO, __func__,
1920
"Handshake failed - BIO_read");
1921
if (BIO_reset(conn->ssl_out) < 0) {
1922
tls_show_errors(MSG_INFO, __func__,
1923
"BIO_reset failed");
1933
int tls_connection_encrypt(void *ssl_ctx, struct tls_connection *conn,
1934
const u8 *in_data, size_t in_len,
1935
u8 *out_data, size_t out_len)
1942
/* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
1943
if ((res = BIO_reset(conn->ssl_in)) < 0 ||
1944
(res = BIO_reset(conn->ssl_out)) < 0) {
1945
tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
1948
res = SSL_write(conn->ssl, in_data, in_len);
1950
tls_show_errors(MSG_INFO, __func__,
1951
"Encryption failed - SSL_write");
1955
/* Read encrypted data to be sent to the server */
1956
res = BIO_read(conn->ssl_out, out_data, out_len);
1958
tls_show_errors(MSG_INFO, __func__,
1959
"Encryption failed - BIO_read");
1967
int tls_connection_decrypt(void *ssl_ctx, struct tls_connection *conn,
1968
const u8 *in_data, size_t in_len,
1969
u8 *out_data, size_t out_len)
1973
/* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
1974
res = BIO_write(conn->ssl_in, in_data, in_len);
1976
tls_show_errors(MSG_INFO, __func__,
1977
"Decryption failed - BIO_write");
1980
if (BIO_reset(conn->ssl_out) < 0) {
1981
tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
1985
/* Read decrypted data for further processing */
1986
res = SSL_read(conn->ssl, out_data, out_len);
1988
tls_show_errors(MSG_INFO, __func__,
1989
"Decryption failed - SSL_read");
1997
int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
1999
return conn ? conn->ssl->hit : 0;
2003
#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC)
2004
/* Pre-shared secred requires a patch to openssl, so this function is
2005
* commented out unless explicitly needed for EAP-FAST in order to be able to
2006
* build this file with unmodified openssl. */
2008
static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
2009
STACK_OF(SSL_CIPHER) *peer_ciphers,
2010
SSL_CIPHER **cipher, void *arg)
2012
struct tls_connection *conn = arg;
2014
if (conn == NULL || conn->pre_shared_secret == 0)
2017
os_memcpy(secret, conn->pre_shared_secret,
2018
conn->pre_shared_secret_len);
2019
*secret_len = conn->pre_shared_secret_len;
2025
int tls_connection_set_master_key(void *ssl_ctx, struct tls_connection *conn,
2026
const u8 *key, size_t key_len)
2028
if (conn == NULL || key_len > SSL_MAX_MASTER_KEY_LENGTH)
2031
os_free(conn->pre_shared_secret);
2032
conn->pre_shared_secret = NULL;
2033
conn->pre_shared_secret_len = 0;
2036
conn->pre_shared_secret = os_malloc(key_len);
2037
if (conn->pre_shared_secret) {
2038
os_memcpy(conn->pre_shared_secret, key, key_len);
2039
conn->pre_shared_secret_len = key_len;
2041
if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
2045
if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
2051
#endif /* EAP_FAST || EAP_FAST_DYNAMIC */
2054
int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
2057
char buf[100], *pos, *end;
2061
if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
2066
end = pos + sizeof(buf);
2069
while (*c != TLS_CIPHER_NONE) {
2073
case TLS_CIPHER_RC4_SHA:
2076
case TLS_CIPHER_AES128_SHA:
2077
suite = "AES128-SHA";
2079
case TLS_CIPHER_RSA_DHE_AES128_SHA:
2080
suite = "DHE-RSA-AES128-SHA";
2082
case TLS_CIPHER_ANON_DH_AES128_SHA:
2083
suite = "ADH-AES128-SHA";
2086
wpa_printf(MSG_DEBUG, "TLS: Unsupported "
2087
"cipher selection: %d", *c);
2090
ret = os_snprintf(pos, end - pos, ":%s", suite);
2091
if (ret < 0 || ret >= end - pos)
2098
wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
2100
if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
2101
tls_show_errors(MSG_INFO, __func__,
2102
"Cipher suite configuration failed");
2110
int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
2111
char *buf, size_t buflen)
2114
if (conn == NULL || conn->ssl == NULL)
2117
name = SSL_get_cipher(conn->ssl);
2121
os_strlcpy(buf, name, buflen);
2126
int tls_connection_enable_workaround(void *ssl_ctx,
2127
struct tls_connection *conn)
2129
SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
2135
#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC)
2136
/* ClientHello TLS extensions require a patch to openssl, so this function is
2137
* commented out unless explicitly needed for EAP-FAST in order to be able to
2138
* build this file with unmodified openssl. */
2139
int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
2140
int ext_type, const u8 *data,
2143
if (conn == NULL || conn->ssl == NULL)
2146
if (SSL_set_hello_extension(conn->ssl, ext_type, (void *) data,
2152
#endif /* EAP_FAST || EAP_FAST_DYNAMIC */
2155
int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
2159
return conn->failed;
2163
int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
2167
return conn->read_alerts;
2171
int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
2175
return conn->write_alerts;
2179
int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
2180
const struct tls_connection_params *params)
2188
while ((err = ERR_get_error())) {
2189
wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
2190
__func__, ERR_error_string(err, NULL));
2193
if (tls_connection_set_subject_match(conn,
2194
params->subject_match,
2195
params->altsubject_match))
2197
if (tls_connection_ca_cert(tls_ctx, conn, params->ca_cert,
2198
params->ca_cert_blob,
2199
params->ca_cert_blob_len,
2202
if (tls_connection_client_cert(conn, params->client_cert,
2203
params->client_cert_blob,
2204
params->client_cert_blob_len))
2207
if (params->engine) {
2208
wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
2209
ret = tls_engine_init(conn, params->engine_id, params->pin,
2213
if (tls_connection_engine_private_key(conn))
2214
return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
2215
} else if (tls_connection_private_key(tls_ctx, conn,
2216
params->private_key,
2217
params->private_key_passwd,
2218
params->private_key_blob,
2219
params->private_key_blob_len)) {
2220
wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
2221
params->private_key);
2225
if (tls_connection_dh(conn, params->dh_file)) {
2226
wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
2231
tls_get_errors(tls_ctx);
2237
int tls_global_set_params(void *tls_ctx,
2238
const struct tls_connection_params *params)
2240
SSL_CTX *ssl_ctx = tls_ctx;
2243
while ((err = ERR_get_error())) {
2244
wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
2245
__func__, ERR_error_string(err, NULL));
2248
if (tls_global_ca_cert(ssl_ctx, params->ca_cert))
2251
if (tls_global_client_cert(ssl_ctx, params->client_cert))
2254
if (tls_global_private_key(ssl_ctx, params->private_key,
2255
params->private_key_passwd))
2262
int tls_connection_get_keyblock_size(void *tls_ctx,
2263
struct tls_connection *conn)
2265
const EVP_CIPHER *c;
2268
if (conn == NULL || conn->ssl == NULL ||
2269
conn->ssl->enc_read_ctx == NULL ||
2270
conn->ssl->enc_read_ctx->cipher == NULL ||
2271
conn->ssl->read_hash == NULL)
2274
c = conn->ssl->enc_read_ctx->cipher;
2275
h = conn->ssl->read_hash;
2277
return 2 * (EVP_CIPHER_key_length(c) +
2279
EVP_CIPHER_iv_length(c));
2283
unsigned int tls_capabilities(void *tls_ctx)
2289
int tls_connection_set_ia(void *tls_ctx, struct tls_connection *conn,
2296
int tls_connection_ia_send_phase_finished(void *tls_ctx,
2297
struct tls_connection *conn,
2299
u8 *out_data, size_t out_len)
2305
int tls_connection_ia_final_phase_finished(void *tls_ctx,
2306
struct tls_connection *conn)
2312
int tls_connection_ia_permute_inner_secret(void *tls_ctx,
2313
struct tls_connection *conn,
2314
const u8 *key, size_t key_len)