wpa_supplicant: Initial Revision 0.8.X

Based on:
commit 0725cc7b7efc434910e89865c42eda7ce61bbf08
Author: Jouni Malinen <j@w1.fi>
Date:   Thu Apr 21 20:41:01 2011 +0300

    Enable CONFIG_DRIVER_NL80211=y in the default configuration

    nl80211 should be preferred over WEXT with any recent Linux
    kernel version.

Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64
Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>

1 files changed, 2992 insertions, 0 deletions

diff --git a/src/crypto/tls_openssl.c b/src/crypto/tls_openssl.c
new file mode 100644
index 0000000..bf92a11
--- /dev/null
+++ b/src/crypto/tls_openssl.c
@@ -0,0 +1,2992 @@
+/*
+ * SSL/TLS interface functions for OpenSSL
+ * Copyright (c) 2004-2010, Jouni Malinen <j@w1.fi>
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * Alternatively, this software may be distributed under the terms of BSD
+ * license.
+ *
+ * See README and COPYING for more details.
+ */
+
+#include "includes.h"
+
+#ifndef CONFIG_SMARTCARD
+#ifndef OPENSSL_NO_ENGINE
+#define OPENSSL_NO_ENGINE
+#endif
+#endif
+
+#include <openssl/ssl.h>
+#include <openssl/err.h>
+#include <openssl/pkcs12.h>
+#include <openssl/x509v3.h>
+#ifndef OPENSSL_NO_ENGINE
+#include <openssl/engine.h>
+#endif /* OPENSSL_NO_ENGINE */
+
+#ifdef ANDROID
+#include <openssl/pem.h>
+#include "keystore_get.h"
+#endif /* ANDROID */
+
+#include "common.h"
+#include "crypto.h"
+#include "tls.h"
+
+#if OPENSSL_VERSION_NUMBER >= 0x0090800fL
+#define OPENSSL_d2i_TYPE const unsigned char **
+#else
+#define OPENSSL_d2i_TYPE unsigned char **
+#endif
+
+#ifdef SSL_F_SSL_SET_SESSION_TICKET_EXT
+#ifdef SSL_OP_NO_TICKET
+/*
+ * Session ticket override patch was merged into OpenSSL 0.9.9 tree on
+ * 2008-11-15. This version uses a bit different API compared to the old patch.
+ */
+#define CONFIG_OPENSSL_TICKET_OVERRIDE
+#endif
+#endif
+
+static int tls_openssl_ref_count = 0;
+
+struct tls_global {
+	void (*event_cb)(void *ctx, enum tls_event ev,
+			 union tls_event_data *data);
+	void *cb_ctx;
+};
+
+static struct tls_global *tls_global = NULL;
+
+
+struct tls_connection {
+	SSL *ssl;
+	BIO *ssl_in, *ssl_out;
+#ifndef OPENSSL_NO_ENGINE
+	ENGINE *engine;        /* functional reference to the engine */
+	EVP_PKEY *private_key; /* the private key if using engine */
+#endif /* OPENSSL_NO_ENGINE */
+	char *subject_match, *altsubject_match;
+	int read_alerts, write_alerts, failed;
+
+	tls_session_ticket_cb session_ticket_cb;
+	void *session_ticket_cb_ctx;
+
+	/* SessionTicket received from OpenSSL hello_extension_cb (server) */
+	u8 *session_ticket;
+	size_t session_ticket_len;
+
+	unsigned int ca_cert_verify:1;
+	unsigned int cert_probe:1;
+	unsigned int server_cert_only:1;
+
+	u8 srv_cert_hash[32];
+};
+
+
+#ifdef CONFIG_NO_STDOUT_DEBUG
+
+static void _tls_show_errors(void)
+{
+	unsigned long err;
+
+	while ((err = ERR_get_error())) {
+		/* Just ignore the errors, since stdout is disabled */
+	}
+}
+#define tls_show_errors(l, f, t) _tls_show_errors()
+
+#else /* CONFIG_NO_STDOUT_DEBUG */
+
+static void tls_show_errors(int level, const char *func, const char *txt)
+{
+	unsigned long err;
+
+	wpa_printf(level, "OpenSSL: %s - %s %s",
+		   func, txt, ERR_error_string(ERR_get_error(), NULL));
+
+	while ((err = ERR_get_error())) {
+		wpa_printf(MSG_INFO, "OpenSSL: pending error: %s",
+			   ERR_error_string(err, NULL));
+	}
+}
+
+#endif /* CONFIG_NO_STDOUT_DEBUG */
+
+
+#ifdef CONFIG_NATIVE_WINDOWS
+
+/* Windows CryptoAPI and access to certificate stores */
+#include <wincrypt.h>
+
+#ifdef __MINGW32_VERSION
+/*
+ * MinGW does not yet include all the needed definitions for CryptoAPI, so
+ * define here whatever extra is needed.
+ */
+#define CERT_SYSTEM_STORE_CURRENT_USER (1 << 16)
+#define CERT_STORE_READONLY_FLAG 0x00008000
+#define CERT_STORE_OPEN_EXISTING_FLAG 0x00004000
+
+#endif /* __MINGW32_VERSION */
+
+
+struct cryptoapi_rsa_data {
+	const CERT_CONTEXT *cert;
+	HCRYPTPROV crypt_prov;
+	DWORD key_spec;
+	BOOL free_crypt_prov;
+};
+
+
+static void cryptoapi_error(const char *msg)
+{
+	wpa_printf(MSG_INFO, "CryptoAPI: %s; err=%u",
+		   msg, (unsigned int) GetLastError());
+}
+
+
+static int cryptoapi_rsa_pub_enc(int flen, const unsigned char *from,
+				 unsigned char *to, RSA *rsa, int padding)
+{
+	wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
+	return 0;
+}
+
+
+static int cryptoapi_rsa_pub_dec(int flen, const unsigned char *from,
+				 unsigned char *to, RSA *rsa, int padding)
+{
+	wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
+	return 0;
+}
+
+
+static int cryptoapi_rsa_priv_enc(int flen, const unsigned char *from,
+				  unsigned char *to, RSA *rsa, int padding)
+{
+	struct cryptoapi_rsa_data *priv =
+		(struct cryptoapi_rsa_data *) rsa->meth->app_data;
+	HCRYPTHASH hash;
+	DWORD hash_size, len, i;
+	unsigned char *buf = NULL;
+	int ret = 0;
+
+	if (priv == NULL) {
+		RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
+		       ERR_R_PASSED_NULL_PARAMETER);
+		return 0;
+	}
+
+	if (padding != RSA_PKCS1_PADDING) {
+		RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
+		       RSA_R_UNKNOWN_PADDING_TYPE);
+		return 0;
+	}
+
+	if (flen != 16 /* MD5 */ + 20 /* SHA-1 */) {
+		wpa_printf(MSG_INFO, "%s - only MD5-SHA1 hash supported",
+			   __func__);
+		RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
+		       RSA_R_INVALID_MESSAGE_LENGTH);
+		return 0;
+	}
+
+	if (!CryptCreateHash(priv->crypt_prov, CALG_SSL3_SHAMD5, 0, 0, &hash))
+	{
+		cryptoapi_error("CryptCreateHash failed");
+		return 0;
+	}
+
+	len = sizeof(hash_size);
+	if (!CryptGetHashParam(hash, HP_HASHSIZE, (BYTE *) &hash_size, &len,
+			       0)) {
+		cryptoapi_error("CryptGetHashParam failed");
+		goto err;
+	}
+
+	if ((int) hash_size != flen) {
+		wpa_printf(MSG_INFO, "CryptoAPI: Invalid hash size (%u != %d)",
+			   (unsigned) hash_size, flen);
+		RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT,
+		       RSA_R_INVALID_MESSAGE_LENGTH);
+		goto err;
+	}
+	if (!CryptSetHashParam(hash, HP_HASHVAL, (BYTE * ) from, 0)) {
+		cryptoapi_error("CryptSetHashParam failed");
+		goto err;
+	}
+
+	len = RSA_size(rsa);
+	buf = os_malloc(len);
+	if (buf == NULL) {
+		RSAerr(RSA_F_RSA_EAY_PRIVATE_ENCRYPT, ERR_R_MALLOC_FAILURE);
+		goto err;
+	}
+
+	if (!CryptSignHash(hash, priv->key_spec, NULL, 0, buf, &len)) {
+		cryptoapi_error("CryptSignHash failed");
+		goto err;
+	}
+
+	for (i = 0; i < len; i++)
+		to[i] = buf[len - i - 1];
+	ret = len;
+
+err:
+	os_free(buf);
+	CryptDestroyHash(hash);
+
+	return ret;
+}
+
+
+static int cryptoapi_rsa_priv_dec(int flen, const unsigned char *from,
+				  unsigned char *to, RSA *rsa, int padding)
+{
+	wpa_printf(MSG_DEBUG, "%s - not implemented", __func__);
+	return 0;
+}
+
+
+static void cryptoapi_free_data(struct cryptoapi_rsa_data *priv)
+{
+	if (priv == NULL)
+		return;
+	if (priv->crypt_prov && priv->free_crypt_prov)
+		CryptReleaseContext(priv->crypt_prov, 0);
+	if (priv->cert)
+		CertFreeCertificateContext(priv->cert);
+	os_free(priv);
+}
+
+
+static int cryptoapi_finish(RSA *rsa)
+{
+	cryptoapi_free_data((struct cryptoapi_rsa_data *) rsa->meth->app_data);
+	os_free((void *) rsa->meth);
+	rsa->meth = NULL;
+	return 1;
+}
+
+
+static const CERT_CONTEXT * cryptoapi_find_cert(const char *name, DWORD store)
+{
+	HCERTSTORE cs;
+	const CERT_CONTEXT *ret = NULL;
+
+	cs = CertOpenStore((LPCSTR) CERT_STORE_PROV_SYSTEM, 0, 0,
+			   store | CERT_STORE_OPEN_EXISTING_FLAG |
+			   CERT_STORE_READONLY_FLAG, L"MY");
+	if (cs == NULL) {
+		cryptoapi_error("Failed to open 'My system store'");
+		return NULL;
+	}
+
+	if (strncmp(name, "cert://", 7) == 0) {
+		unsigned short wbuf[255];
+		MultiByteToWideChar(CP_ACP, 0, name + 7, -1, wbuf, 255);
+		ret = CertFindCertificateInStore(cs, X509_ASN_ENCODING |
+						 PKCS_7_ASN_ENCODING,
+						 0, CERT_FIND_SUBJECT_STR,
+						 wbuf, NULL);
+	} else if (strncmp(name, "hash://", 7) == 0) {
+		CRYPT_HASH_BLOB blob;
+		int len;
+		const char *hash = name + 7;
+		unsigned char *buf;
+
+		len = os_strlen(hash) / 2;
+		buf = os_malloc(len);
+		if (buf && hexstr2bin(hash, buf, len) == 0) {
+			blob.cbData = len;
+			blob.pbData = buf;
+			ret = CertFindCertificateInStore(cs,
+							 X509_ASN_ENCODING |
+							 PKCS_7_ASN_ENCODING,
+							 0, CERT_FIND_HASH,
+							 &blob, NULL);
+		}
+		os_free(buf);
+	}
+
+	CertCloseStore(cs, 0);
+
+	return ret;
+}
+
+
+static int tls_cryptoapi_cert(SSL *ssl, const char *name)
+{
+	X509 *cert = NULL;
+	RSA *rsa = NULL, *pub_rsa;
+	struct cryptoapi_rsa_data *priv;
+	RSA_METHOD *rsa_meth;
+
+	if (name == NULL ||
+	    (strncmp(name, "cert://", 7) != 0 &&
+	     strncmp(name, "hash://", 7) != 0))
+		return -1;
+
+	priv = os_zalloc(sizeof(*priv));
+	rsa_meth = os_zalloc(sizeof(*rsa_meth));
+	if (priv == NULL || rsa_meth == NULL) {
+		wpa_printf(MSG_WARNING, "CryptoAPI: Failed to allocate memory "
+			   "for CryptoAPI RSA method");
+		os_free(priv);
+		os_free(rsa_meth);
+		return -1;
+	}
+
+	priv->cert = cryptoapi_find_cert(name, CERT_SYSTEM_STORE_CURRENT_USER);
+	if (priv->cert == NULL) {
+		priv->cert = cryptoapi_find_cert(
+			name, CERT_SYSTEM_STORE_LOCAL_MACHINE);
+	}
+	if (priv->cert == NULL) {
+		wpa_printf(MSG_INFO, "CryptoAPI: Could not find certificate "
+			   "'%s'", name);
+		goto err;
+	}
+
+	cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &priv->cert->pbCertEncoded,
+			priv->cert->cbCertEncoded);
+	if (cert == NULL) {
+		wpa_printf(MSG_INFO, "CryptoAPI: Could not process X509 DER "
+			   "encoding");
+		goto err;
+	}
+
+	if (!CryptAcquireCertificatePrivateKey(priv->cert,
+					       CRYPT_ACQUIRE_COMPARE_KEY_FLAG,
+					       NULL, &priv->crypt_prov,
+					       &priv->key_spec,
+					       &priv->free_crypt_prov)) {
+		cryptoapi_error("Failed to acquire a private key for the "
+				"certificate");
+		goto err;
+	}
+
+	rsa_meth->name = "Microsoft CryptoAPI RSA Method";
+	rsa_meth->rsa_pub_enc = cryptoapi_rsa_pub_enc;
+	rsa_meth->rsa_pub_dec = cryptoapi_rsa_pub_dec;
+	rsa_meth->rsa_priv_enc = cryptoapi_rsa_priv_enc;
+	rsa_meth->rsa_priv_dec = cryptoapi_rsa_priv_dec;
+	rsa_meth->finish = cryptoapi_finish;
+	rsa_meth->flags = RSA_METHOD_FLAG_NO_CHECK;
+	rsa_meth->app_data = (char *) priv;
+
+	rsa = RSA_new();
+	if (rsa == NULL) {
+		SSLerr(SSL_F_SSL_CTX_USE_CERTIFICATE_FILE,
+		       ERR_R_MALLOC_FAILURE);
+		goto err;
+	}
+
+	if (!SSL_use_certificate(ssl, cert)) {
+		RSA_free(rsa);
+		rsa = NULL;
+		goto err;
+	}
+	pub_rsa = cert->cert_info->key->pkey->pkey.rsa;
+	X509_free(cert);
+	cert = NULL;
+
+	rsa->n = BN_dup(pub_rsa->n);
+	rsa->e = BN_dup(pub_rsa->e);
+	if (!RSA_set_method(rsa, rsa_meth))
+		goto err;
+
+	if (!SSL_use_RSAPrivateKey(ssl, rsa))
+		goto err;
+	RSA_free(rsa);
+
+	return 0;
+
+err:
+	if (cert)
+		X509_free(cert);
+	if (rsa)
+		RSA_free(rsa);
+	else {
+		os_free(rsa_meth);
+		cryptoapi_free_data(priv);
+	}
+	return -1;
+}
+
+
+static int tls_cryptoapi_ca_cert(SSL_CTX *ssl_ctx, SSL *ssl, const char *name)
+{
+	HCERTSTORE cs;
+	PCCERT_CONTEXT ctx = NULL;
+	X509 *cert;
+	char buf[128];
+	const char *store;
+#ifdef UNICODE
+	WCHAR *wstore;
+#endif /* UNICODE */
+
+	if (name == NULL || strncmp(name, "cert_store://", 13) != 0)
+		return -1;
+
+	store = name + 13;
+#ifdef UNICODE
+	wstore = os_malloc((os_strlen(store) + 1) * sizeof(WCHAR));
+	if (wstore == NULL)
+		return -1;
+	wsprintf(wstore, L"%S", store);
+	cs = CertOpenSystemStore(0, wstore);
+	os_free(wstore);
+#else /* UNICODE */
+	cs = CertOpenSystemStore(0, store);
+#endif /* UNICODE */
+	if (cs == NULL) {
+		wpa_printf(MSG_DEBUG, "%s: failed to open system cert store "
+			   "'%s': error=%d", __func__, store,
+			   (int) GetLastError());
+		return -1;
+	}
+
+	while ((ctx = CertEnumCertificatesInStore(cs, ctx))) {
+		cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &ctx->pbCertEncoded,
+				ctx->cbCertEncoded);
+		if (cert == NULL) {
+			wpa_printf(MSG_INFO, "CryptoAPI: Could not process "
+				   "X509 DER encoding for CA cert");
+			continue;
+		}
+
+		X509_NAME_oneline(X509_get_subject_name(cert), buf,
+				  sizeof(buf));
+		wpa_printf(MSG_DEBUG, "OpenSSL: Loaded CA certificate for "
+			   "system certificate store: subject='%s'", buf);
+
+		if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
+			tls_show_errors(MSG_WARNING, __func__,
+					"Failed to add ca_cert to OpenSSL "
+					"certificate store");
+		}
+
+		X509_free(cert);
+	}
+
+	if (!CertCloseStore(cs, 0)) {
+		wpa_printf(MSG_DEBUG, "%s: failed to close system cert store "
+			   "'%s': error=%d", __func__, name + 13,
+			   (int) GetLastError());
+	}
+
+	return 0;
+}
+
+
+#else /* CONFIG_NATIVE_WINDOWS */
+
+static int tls_cryptoapi_cert(SSL *ssl, const char *name)
+{
+	return -1;
+}
+
+#endif /* CONFIG_NATIVE_WINDOWS */
+
+
+static void ssl_info_cb(const SSL *ssl, int where, int ret)
+{
+	const char *str;
+	int w;
+
+	wpa_printf(MSG_DEBUG, "SSL: (where=0x%x ret=0x%x)", where, ret);
+	w = where & ~SSL_ST_MASK;
+	if (w & SSL_ST_CONNECT)
+		str = "SSL_connect";
+	else if (w & SSL_ST_ACCEPT)
+		str = "SSL_accept";
+	else
+		str = "undefined";
+
+	if (where & SSL_CB_LOOP) {
+		wpa_printf(MSG_DEBUG, "SSL: %s:%s",
+			   str, SSL_state_string_long(ssl));
+	} else if (where & SSL_CB_ALERT) {
+		wpa_printf(MSG_INFO, "SSL: SSL3 alert: %s:%s:%s",
+			   where & SSL_CB_READ ?
+			   "read (remote end reported an error)" :
+			   "write (local SSL3 detected an error)",
+			   SSL_alert_type_string_long(ret),
+			   SSL_alert_desc_string_long(ret));
+		if ((ret >> 8) == SSL3_AL_FATAL) {
+			struct tls_connection *conn =
+				SSL_get_app_data((SSL *) ssl);
+			if (where & SSL_CB_READ)
+				conn->read_alerts++;
+			else
+				conn->write_alerts++;
+		}
+	} else if (where & SSL_CB_EXIT && ret <= 0) {
+		wpa_printf(MSG_DEBUG, "SSL: %s:%s in %s",
+			   str, ret == 0 ? "failed" : "error",
+			   SSL_state_string_long(ssl));
+	}
+}
+
+
+#ifndef OPENSSL_NO_ENGINE
+/**
+ * tls_engine_load_dynamic_generic - load any openssl engine
+ * @pre: an array of commands and values that load an engine initialized
+ *       in the engine specific function
+ * @post: an array of commands and values that initialize an already loaded
+ *        engine (or %NULL if not required)
+ * @id: the engine id of the engine to load (only required if post is not %NULL
+ *
+ * This function is a generic function that loads any openssl engine.
+ *
+ * Returns: 0 on success, -1 on failure
+ */
+static int tls_engine_load_dynamic_generic(const char *pre[],
+					   const char *post[], const char *id)
+{
+	ENGINE *engine;
+	const char *dynamic_id = "dynamic";
+
+	engine = ENGINE_by_id(id);
+	if (engine) {
+		ENGINE_free(engine);
+		wpa_printf(MSG_DEBUG, "ENGINE: engine '%s' is already "
+			   "available", id);
+		return 0;
+	}
+	ERR_clear_error();
+
+	engine = ENGINE_by_id(dynamic_id);
+	if (engine == NULL) {
+		wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
+			   dynamic_id,
+			   ERR_error_string(ERR_get_error(), NULL));
+		return -1;
+	}
+
+	/* Perform the pre commands. This will load the engine. */
+	while (pre && pre[0]) {
+		wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", pre[0], pre[1]);
+		if (ENGINE_ctrl_cmd_string(engine, pre[0], pre[1], 0) == 0) {
+			wpa_printf(MSG_INFO, "ENGINE: ctrl cmd_string failed: "
+				   "%s %s [%s]", pre[0], pre[1],
+				   ERR_error_string(ERR_get_error(), NULL));
+			ENGINE_free(engine);
+			return -1;
+		}
+		pre += 2;
+	}
+
+	/*
+	 * Free the reference to the "dynamic" engine. The loaded engine can
+	 * now be looked up using ENGINE_by_id().
+	 */
+	ENGINE_free(engine);
+
+	engine = ENGINE_by_id(id);
+	if (engine == NULL) {
+		wpa_printf(MSG_INFO, "ENGINE: Can't find engine %s [%s]",
+			   id, ERR_error_string(ERR_get_error(), NULL));
+		return -1;
+	}
+
+	while (post && post[0]) {
+		wpa_printf(MSG_DEBUG, "ENGINE: '%s' '%s'", post[0], post[1]);
+		if (ENGINE_ctrl_cmd_string(engine, post[0], post[1], 0) == 0) {
+			wpa_printf(MSG_DEBUG, "ENGINE: ctrl cmd_string failed:"
+				" %s %s [%s]", post[0], post[1],
+				   ERR_error_string(ERR_get_error(), NULL));
+			ENGINE_remove(engine);
+			ENGINE_free(engine);
+			return -1;
+		}
+		post += 2;
+	}
+	ENGINE_free(engine);
+
+	return 0;
+}
+
+
+/**
+ * tls_engine_load_dynamic_pkcs11 - load the pkcs11 engine provided by opensc
+ * @pkcs11_so_path: pksc11_so_path from the configuration
+ * @pcks11_module_path: pkcs11_module_path from the configuration
+ */
+static int tls_engine_load_dynamic_pkcs11(const char *pkcs11_so_path,
+					  const char *pkcs11_module_path)
+{
+	char *engine_id = "pkcs11";
+	const char *pre_cmd[] = {
+		"SO_PATH", NULL /* pkcs11_so_path */,
+		"ID", NULL /* engine_id */,
+		"LIST_ADD", "1",
+		/* "NO_VCHECK", "1", */
+		"LOAD", NULL,
+		NULL, NULL
+	};
+	const char *post_cmd[] = {
+		"MODULE_PATH", NULL /* pkcs11_module_path */,
+		NULL, NULL
+	};
+
+	if (!pkcs11_so_path || !pkcs11_module_path)
+		return 0;
+
+	pre_cmd[1] = pkcs11_so_path;
+	pre_cmd[3] = engine_id;
+	post_cmd[1] = pkcs11_module_path;
+
+	wpa_printf(MSG_DEBUG, "ENGINE: Loading pkcs11 Engine from %s",
+		   pkcs11_so_path);
+
+	return tls_engine_load_dynamic_generic(pre_cmd, post_cmd, engine_id);
+}
+
+
+/**
+ * tls_engine_load_dynamic_opensc - load the opensc engine provided by opensc
+ * @opensc_so_path: opensc_so_path from the configuration
+ */
+static int tls_engine_load_dynamic_opensc(const char *opensc_so_path)
+{
+	char *engine_id = "opensc";
+	const char *pre_cmd[] = {
+		"SO_PATH", NULL /* opensc_so_path */,
+		"ID", NULL /* engine_id */,
+		"LIST_ADD", "1",
+		"LOAD", NULL,
+		NULL, NULL
+	};
+
+	if (!opensc_so_path)
+		return 0;
+
+	pre_cmd[1] = opensc_so_path;
+	pre_cmd[3] = engine_id;
+
+	wpa_printf(MSG_DEBUG, "ENGINE: Loading OpenSC Engine from %s",
+		   opensc_so_path);
+
+	return tls_engine_load_dynamic_generic(pre_cmd, NULL, engine_id);
+}
+#endif /* OPENSSL_NO_ENGINE */
+
+
+void * tls_init(const struct tls_config *conf)
+{
+	SSL_CTX *ssl;
+
+	if (tls_openssl_ref_count == 0) {
+		tls_global = os_zalloc(sizeof(*tls_global));
+		if (tls_global == NULL)
+			return NULL;
+		if (conf) {
+			tls_global->event_cb = conf->event_cb;
+			tls_global->cb_ctx = conf->cb_ctx;
+		}
+
+#ifdef CONFIG_FIPS
+#ifdef OPENSSL_FIPS
+		if (conf && conf->fips_mode) {
+			if (!FIPS_mode_set(1)) {
+				wpa_printf(MSG_ERROR, "Failed to enable FIPS "
+					   "mode");
+				ERR_load_crypto_strings();
+				ERR_print_errors_fp(stderr);
+				return NULL;
+			} else
+				wpa_printf(MSG_INFO, "Running in FIPS mode");
+		}
+#else /* OPENSSL_FIPS */
+		if (conf && conf->fips_mode) {
+			wpa_printf(MSG_ERROR, "FIPS mode requested, but not "
+				   "supported");
+			return NULL;
+		}
+#endif /* OPENSSL_FIPS */
+#endif /* CONFIG_FIPS */
+		SSL_load_error_strings();
+		SSL_library_init();
+#if (OPENSSL_VERSION_NUMBER >= 0x0090800fL) && !defined(OPENSSL_NO_SHA256)
+		EVP_add_digest(EVP_sha256());
+#endif /* OPENSSL_NO_SHA256 */
+		/* TODO: if /dev/urandom is available, PRNG is seeded
+		 * automatically. If this is not the case, random data should
+		 * be added here. */
+
+#ifdef PKCS12_FUNCS
+#ifndef OPENSSL_NO_RC2
+		/*
+		 * 40-bit RC2 is commonly used in PKCS#12 files, so enable it.
+		 * This is enabled by PKCS12_PBE_add() in OpenSSL 0.9.8
+		 * versions, but it looks like OpenSSL 1.0.0 does not do that
+		 * anymore.
+		 */
+		EVP_add_cipher(EVP_rc2_40_cbc());
+#endif /* OPENSSL_NO_RC2 */
+		PKCS12_PBE_add();
+#endif  /* PKCS12_FUNCS */
+	}
+	tls_openssl_ref_count++;
+
+	ssl = SSL_CTX_new(TLSv1_method());
+	if (ssl == NULL)
+		return NULL;
+
+	SSL_CTX_set_info_callback(ssl, ssl_info_cb);
+
+#ifndef OPENSSL_NO_ENGINE
+	if (conf &&
+	    (conf->opensc_engine_path || conf->pkcs11_engine_path ||
+	     conf->pkcs11_module_path)) {
+		wpa_printf(MSG_DEBUG, "ENGINE: Loading dynamic engine");
+		ERR_load_ENGINE_strings();
+		ENGINE_load_dynamic();
+
+		if (tls_engine_load_dynamic_opensc(conf->opensc_engine_path) ||
+		    tls_engine_load_dynamic_pkcs11(conf->pkcs11_engine_path,
+						   conf->pkcs11_module_path)) {
+			tls_deinit(ssl);
+			return NULL;
+		}
+	}
+#endif /* OPENSSL_NO_ENGINE */
+
+	return ssl;
+}
+
+
+void tls_deinit(void *ssl_ctx)
+{
+	SSL_CTX *ssl = ssl_ctx;
+	SSL_CTX_free(ssl);
+
+	tls_openssl_ref_count--;
+	if (tls_openssl_ref_count == 0) {
+#ifndef OPENSSL_NO_ENGINE
+		ENGINE_cleanup();
+#endif /* OPENSSL_NO_ENGINE */
+		CRYPTO_cleanup_all_ex_data();
+		ERR_remove_state(0);
+		ERR_free_strings();
+		EVP_cleanup();
+		os_free(tls_global);
+		tls_global = NULL;
+	}
+}
+
+
+static int tls_engine_init(struct tls_connection *conn, const char *engine_id,
+			   const char *pin, const char *key_id,
+			   const char *cert_id, const char *ca_cert_id)
+{
+#ifndef OPENSSL_NO_ENGINE
+	int ret = -1;
+	if (engine_id == NULL) {
+		wpa_printf(MSG_ERROR, "ENGINE: Engine ID not set");
+		return -1;
+	}
+	if (pin == NULL) {
+		wpa_printf(MSG_ERROR, "ENGINE: Smartcard PIN not set");
+		return -1;
+	}
+	if (key_id == NULL) {
+		wpa_printf(MSG_ERROR, "ENGINE: Key Id not set");
+		return -1;
+	}
+
+	ERR_clear_error();
+	conn->engine = ENGINE_by_id(engine_id);
+	if (!conn->engine) {
+		wpa_printf(MSG_ERROR, "ENGINE: engine %s not available [%s]",
+			   engine_id, ERR_error_string(ERR_get_error(), NULL));
+		goto err;
+	}
+	if (ENGINE_init(conn->engine) != 1) {
+		wpa_printf(MSG_ERROR, "ENGINE: engine init failed "
+			   "(engine: %s) [%s]", engine_id,
+			   ERR_error_string(ERR_get_error(), NULL));
+		goto err;
+	}
+	wpa_printf(MSG_DEBUG, "ENGINE: engine initialized");
+
+	if (ENGINE_ctrl_cmd_string(conn->engine, "PIN", pin, 0) == 0) {
+		wpa_printf(MSG_ERROR, "ENGINE: cannot set pin [%s]",
+			   ERR_error_string(ERR_get_error(), NULL));
+		goto err;
+	}
+	/* load private key first in-case PIN is required for cert */
+	conn->private_key = ENGINE_load_private_key(conn->engine,
+						    key_id, NULL, NULL);
+	if (!conn->private_key) {
+		wpa_printf(MSG_ERROR, "ENGINE: cannot load private key with id"
+				" '%s' [%s]", key_id,
+			   ERR_error_string(ERR_get_error(), NULL));
+		ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
+		goto err;
+	}
+
+	/* handle a certificate and/or CA certificate */
+	if (cert_id || ca_cert_id) {
+		const char *cmd_name = "LOAD_CERT_CTRL";
+
+		/* test if the engine supports a LOAD_CERT_CTRL */
+		if (!ENGINE_ctrl(conn->engine, ENGINE_CTRL_GET_CMD_FROM_NAME,
+				 0, (void *)cmd_name, NULL)) {
+			wpa_printf(MSG_ERROR, "ENGINE: engine does not support"
+				   " loading certificates");
+			ret = TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
+			goto err;
+		}
+	}
+
+	return 0;
+
+err:
+	if (conn->engine) {
+		ENGINE_free(conn->engine);
+		conn->engine = NULL;
+	}
+
+	if (conn->private_key) {
+		EVP_PKEY_free(conn->private_key);
+		conn->private_key = NULL;
+	}
+
+	return ret;
+#else /* OPENSSL_NO_ENGINE */
+	return 0;
+#endif /* OPENSSL_NO_ENGINE */
+}
+
+
+static void tls_engine_deinit(struct tls_connection *conn)
+{
+#ifndef OPENSSL_NO_ENGINE
+	wpa_printf(MSG_DEBUG, "ENGINE: engine deinit");
+	if (conn->private_key) {
+		EVP_PKEY_free(conn->private_key);
+		conn->private_key = NULL;
+	}
+	if (conn->engine) {
+		ENGINE_finish(conn->engine);
+		conn->engine = NULL;
+	}
+#endif /* OPENSSL_NO_ENGINE */
+}
+
+
+int tls_get_errors(void *ssl_ctx)
+{
+	int count = 0;
+	unsigned long err;
+
+	while ((err = ERR_get_error())) {
+		wpa_printf(MSG_INFO, "TLS - SSL error: %s",
+			   ERR_error_string(err, NULL));
+		count++;
+	}
+
+	return count;
+}
+
+struct tls_connection * tls_connection_init(void *ssl_ctx)
+{
+	SSL_CTX *ssl = ssl_ctx;
+	struct tls_connection *conn;
+	long options;
+
+	conn = os_zalloc(sizeof(*conn));
+	if (conn == NULL)
+		return NULL;
+	conn->ssl = SSL_new(ssl);
+	if (conn->ssl == NULL) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to initialize new SSL connection");
+		os_free(conn);
+		return NULL;
+	}
+
+	SSL_set_app_data(conn->ssl, conn);
+	options = SSL_OP_NO_SSLv2 | SSL_OP_NO_SSLv3 |
+		SSL_OP_SINGLE_DH_USE;
+#ifdef SSL_OP_NO_COMPRESSION
+	options |= SSL_OP_NO_COMPRESSION;
+#endif /* SSL_OP_NO_COMPRESSION */
+	SSL_set_options(conn->ssl, options);
+
+	conn->ssl_in = BIO_new(BIO_s_mem());
+	if (!conn->ssl_in) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to create a new BIO for ssl_in");
+		SSL_free(conn->ssl);
+		os_free(conn);
+		return NULL;
+	}
+
+	conn->ssl_out = BIO_new(BIO_s_mem());
+	if (!conn->ssl_out) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to create a new BIO for ssl_out");
+		SSL_free(conn->ssl);
+		BIO_free(conn->ssl_in);
+		os_free(conn);
+		return NULL;
+	}
+
+	SSL_set_bio(conn->ssl, conn->ssl_in, conn->ssl_out);
+
+	return conn;
+}
+
+
+void tls_connection_deinit(void *ssl_ctx, struct tls_connection *conn)
+{
+	if (conn == NULL)
+		return;
+	SSL_free(conn->ssl);
+	tls_engine_deinit(conn);
+	os_free(conn->subject_match);
+	os_free(conn->altsubject_match);
+	os_free(conn->session_ticket);
+	os_free(conn);
+}
+
+
+int tls_connection_established(void *ssl_ctx, struct tls_connection *conn)
+{
+	return conn ? SSL_is_init_finished(conn->ssl) : 0;
+}
+
+
+int tls_connection_shutdown(void *ssl_ctx, struct tls_connection *conn)
+{
+	if (conn == NULL)
+		return -1;
+
+	/* Shutdown previous TLS connection without notifying the peer
+	 * because the connection was already terminated in practice
+	 * and "close notify" shutdown alert would confuse AS. */
+	SSL_set_quiet_shutdown(conn->ssl, 1);
+	SSL_shutdown(conn->ssl);
+	return 0;
+}
+
+
+static int tls_match_altsubject_component(X509 *cert, int type,
+					  const char *value, size_t len)
+{
+	GENERAL_NAME *gen;
+	void *ext;
+	int i, found = 0;
+
+	ext = X509_get_ext_d2i(cert, NID_subject_alt_name, NULL, NULL);
+
+	for (i = 0; ext && i < sk_GENERAL_NAME_num(ext); i++) {
+		gen = sk_GENERAL_NAME_value(ext, i);
+		if (gen->type != type)
+			continue;
+		if (os_strlen((char *) gen->d.ia5->data) == len &&
+		    os_memcmp(value, gen->d.ia5->data, len) == 0)
+			found++;
+	}
+
+	return found;
+}
+
+
+static int tls_match_altsubject(X509 *cert, const char *match)
+{
+	int type;
+	const char *pos, *end;
+	size_t len;
+
+	pos = match;
+	do {
+		if (os_strncmp(pos, "EMAIL:", 6) == 0) {
+			type = GEN_EMAIL;
+			pos += 6;
+		} else if (os_strncmp(pos, "DNS:", 4) == 0) {
+			type = GEN_DNS;
+			pos += 4;
+		} else if (os_strncmp(pos, "URI:", 4) == 0) {
+			type = GEN_URI;
+			pos += 4;
+		} else {
+			wpa_printf(MSG_INFO, "TLS: Invalid altSubjectName "
+				   "match '%s'", pos);
+			return 0;
+		}
+		end = os_strchr(pos, ';');
+		while (end) {
+			if (os_strncmp(end + 1, "EMAIL:", 6) == 0 ||
+			    os_strncmp(end + 1, "DNS:", 4) == 0 ||
+			    os_strncmp(end + 1, "URI:", 4) == 0)
+				break;
+			end = os_strchr(end + 1, ';');
+		}
+		if (end)
+			len = end - pos;
+		else
+			len = os_strlen(pos);
+		if (tls_match_altsubject_component(cert, type, pos, len) > 0)
+			return 1;
+		pos = end + 1;
+	} while (end);
+
+	return 0;
+}
+
+
+static enum tls_fail_reason openssl_tls_fail_reason(int err)
+{
+	switch (err) {
+	case X509_V_ERR_CERT_REVOKED:
+		return TLS_FAIL_REVOKED;
+	case X509_V_ERR_CERT_NOT_YET_VALID:
+	case X509_V_ERR_CRL_NOT_YET_VALID:
+		return TLS_FAIL_NOT_YET_VALID;
+	case X509_V_ERR_CERT_HAS_EXPIRED:
+	case X509_V_ERR_CRL_HAS_EXPIRED:
+		return TLS_FAIL_EXPIRED;
+	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT:
+	case X509_V_ERR_UNABLE_TO_GET_CRL:
+	case X509_V_ERR_UNABLE_TO_GET_CRL_ISSUER:
+	case X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN:
+	case X509_V_ERR_UNABLE_TO_GET_ISSUER_CERT_LOCALLY:
+	case X509_V_ERR_DEPTH_ZERO_SELF_SIGNED_CERT:
+	case X509_V_ERR_UNABLE_TO_VERIFY_LEAF_SIGNATURE:
+	case X509_V_ERR_CERT_CHAIN_TOO_LONG:
+	case X509_V_ERR_PATH_LENGTH_EXCEEDED:
+	case X509_V_ERR_INVALID_CA:
+		return TLS_FAIL_UNTRUSTED;
+	case X509_V_ERR_UNABLE_TO_DECRYPT_CERT_SIGNATURE:
+	case X509_V_ERR_UNABLE_TO_DECRYPT_CRL_SIGNATURE:
+	case X509_V_ERR_UNABLE_TO_DECODE_ISSUER_PUBLIC_KEY:
+	case X509_V_ERR_ERROR_IN_CERT_NOT_BEFORE_FIELD:
+	case X509_V_ERR_ERROR_IN_CERT_NOT_AFTER_FIELD:
+	case X509_V_ERR_ERROR_IN_CRL_LAST_UPDATE_FIELD:
+	case X509_V_ERR_ERROR_IN_CRL_NEXT_UPDATE_FIELD:
+	case X509_V_ERR_CERT_UNTRUSTED:
+	case X509_V_ERR_CERT_REJECTED:
+		return TLS_FAIL_BAD_CERTIFICATE;
+	default:
+		return TLS_FAIL_UNSPECIFIED;
+	}
+}
+
+
+static struct wpabuf * get_x509_cert(X509 *cert)
+{
+	struct wpabuf *buf;
+	u8 *tmp;
+
+	int cert_len = i2d_X509(cert, NULL);
+	if (cert_len <= 0)
+		return NULL;
+
+	buf = wpabuf_alloc(cert_len);
+	if (buf == NULL)
+		return NULL;
+
+	tmp = wpabuf_put(buf, cert_len);
+	i2d_X509(cert, &tmp);
+	return buf;
+}
+
+
+static void openssl_tls_fail_event(struct tls_connection *conn,
+				   X509 *err_cert, int err, int depth,
+				   const char *subject, const char *err_str,
+				   enum tls_fail_reason reason)
+{
+	union tls_event_data ev;
+	struct wpabuf *cert = NULL;
+
+	if (tls_global->event_cb == NULL)
+		return;
+
+	cert = get_x509_cert(err_cert);
+	os_memset(&ev, 0, sizeof(ev));
+	ev.cert_fail.reason = reason != TLS_FAIL_UNSPECIFIED ?
+		reason : openssl_tls_fail_reason(err);
+	ev.cert_fail.depth = depth;
+	ev.cert_fail.subject = subject;
+	ev.cert_fail.reason_txt = err_str;
+	ev.cert_fail.cert = cert;
+	tls_global->event_cb(tls_global->cb_ctx, TLS_CERT_CHAIN_FAILURE, &ev);
+	wpabuf_free(cert);
+}
+
+
+static void openssl_tls_cert_event(struct tls_connection *conn,
+				   X509 *err_cert, int depth,
+				   const char *subject)
+{
+	struct wpabuf *cert = NULL;
+	union tls_event_data ev;
+#ifdef CONFIG_SHA256
+	u8 hash[32];
+#endif /* CONFIG_SHA256 */
+
+	if (tls_global->event_cb == NULL)
+		return;
+
+	os_memset(&ev, 0, sizeof(ev));
+	if (conn->cert_probe) {
+		cert = get_x509_cert(err_cert);
+		ev.peer_cert.cert = cert;
+	}
+#ifdef CONFIG_SHA256
+	if (cert) {
+		const u8 *addr[1];
+		size_t len[1];
+		addr[0] = wpabuf_head(cert);
+		len[0] = wpabuf_len(cert);
+		if (sha256_vector(1, addr, len, hash) == 0) {
+			ev.peer_cert.hash = hash;
+			ev.peer_cert.hash_len = sizeof(hash);
+		}
+	}
+#endif /* CONFIG_SHA256 */
+	ev.peer_cert.depth = depth;
+	ev.peer_cert.subject = subject;
+	tls_global->event_cb(tls_global->cb_ctx, TLS_PEER_CERTIFICATE, &ev);
+	wpabuf_free(cert);
+}
+
+
+static int tls_verify_cb(int preverify_ok, X509_STORE_CTX *x509_ctx)
+{
+	char buf[256];
+	X509 *err_cert;
+	int err, depth;
+	SSL *ssl;
+	struct tls_connection *conn;
+	char *match, *altmatch;
+	const char *err_str;
+
+	err_cert = X509_STORE_CTX_get_current_cert(x509_ctx);
+	err = X509_STORE_CTX_get_error(x509_ctx);
+	depth = X509_STORE_CTX_get_error_depth(x509_ctx);
+	ssl = X509_STORE_CTX_get_ex_data(x509_ctx,
+					 SSL_get_ex_data_X509_STORE_CTX_idx());
+	X509_NAME_oneline(X509_get_subject_name(err_cert), buf, sizeof(buf));
+
+	conn = SSL_get_app_data(ssl);
+	if (conn == NULL)
+		return 0;
+	match = conn->subject_match;
+	altmatch = conn->altsubject_match;
+
+	if (!preverify_ok && !conn->ca_cert_verify)
+		preverify_ok = 1;
+	if (!preverify_ok && depth > 0 && conn->server_cert_only)
+		preverify_ok = 1;
+
+	err_str = X509_verify_cert_error_string(err);
+
+#ifdef CONFIG_SHA256
+	if (preverify_ok && depth == 0 && conn->server_cert_only) {
+		struct wpabuf *cert;
+		cert = get_x509_cert(err_cert);
+		if (!cert) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: Could not fetch "
+				   "server certificate data");
+			preverify_ok = 0;
+		} else {
+			u8 hash[32];
+			const u8 *addr[1];
+			size_t len[1];
+			addr[0] = wpabuf_head(cert);
+			len[0] = wpabuf_len(cert);
+			if (sha256_vector(1, addr, len, hash) < 0 ||
+			    os_memcmp(conn->srv_cert_hash, hash, 32) != 0) {
+				err_str = "Server certificate mismatch";
+				err = X509_V_ERR_SELF_SIGNED_CERT_IN_CHAIN;
+				preverify_ok = 0;
+			}
+			wpabuf_free(cert);
+		}
+	}
+#endif /* CONFIG_SHA256 */
+
+	if (!preverify_ok) {
+		wpa_printf(MSG_WARNING, "TLS: Certificate verification failed,"
+			   " error %d (%s) depth %d for '%s'", err, err_str,
+			   depth, buf);
+		openssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       err_str, TLS_FAIL_UNSPECIFIED);
+		return preverify_ok;
+	}
+
+	wpa_printf(MSG_DEBUG, "TLS: tls_verify_cb - preverify_ok=%d "
+		   "err=%d (%s) ca_cert_verify=%d depth=%d buf='%s'",
+		   preverify_ok, err, err_str,
+		   conn->ca_cert_verify, depth, buf);
+	if (depth == 0 && match && os_strstr(buf, match) == NULL) {
+		wpa_printf(MSG_WARNING, "TLS: Subject '%s' did not "
+			   "match with '%s'", buf, match);
+		preverify_ok = 0;
+		openssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "Subject mismatch",
+				       TLS_FAIL_SUBJECT_MISMATCH);
+	} else if (depth == 0 && altmatch &&
+		   !tls_match_altsubject(err_cert, altmatch)) {
+		wpa_printf(MSG_WARNING, "TLS: altSubjectName match "
+			   "'%s' not found", altmatch);
+		preverify_ok = 0;
+		openssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "AltSubject mismatch",
+				       TLS_FAIL_ALTSUBJECT_MISMATCH);
+	} else
+		openssl_tls_cert_event(conn, err_cert, depth, buf);
+
+	if (conn->cert_probe && preverify_ok && depth == 0) {
+		wpa_printf(MSG_DEBUG, "OpenSSL: Reject server certificate "
+			   "on probe-only run");
+		preverify_ok = 0;
+		openssl_tls_fail_event(conn, err_cert, err, depth, buf,
+				       "Server certificate chain probe",
+				       TLS_FAIL_SERVER_CHAIN_PROBE);
+	}
+
+	return preverify_ok;
+}
+
+
+#ifndef OPENSSL_NO_STDIO
+static int tls_load_ca_der(void *_ssl_ctx, const char *ca_cert)
+{
+	SSL_CTX *ssl_ctx = _ssl_ctx;
+	X509_LOOKUP *lookup;
+	int ret = 0;
+
+	lookup = X509_STORE_add_lookup(ssl_ctx->cert_store,
+				       X509_LOOKUP_file());
+	if (lookup == NULL) {
+		tls_show_errors(MSG_WARNING, __func__,
+				"Failed add lookup for X509 store");
+		return -1;
+	}
+
+	if (!X509_LOOKUP_load_file(lookup, ca_cert, X509_FILETYPE_ASN1)) {
+		unsigned long err = ERR_peek_error();
+		tls_show_errors(MSG_WARNING, __func__,
+				"Failed load CA in DER format");
+		if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
+		    ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
+				   "cert already in hash table error",
+				   __func__);
+		} else
+			ret = -1;
+	}
+
+	return ret;
+}
+#endif /* OPENSSL_NO_STDIO */
+
+
+#ifdef ANDROID
+static BIO * BIO_from_keystore(const char *key)
+{
+	BIO *bio = NULL;
+	char value[KEYSTORE_MESSAGE_SIZE];
+	int length = keystore_get(key, strlen(key), value);
+	if (length != -1 && (bio = BIO_new(BIO_s_mem())) != NULL)
+		BIO_write(bio, value, length);
+	return bio;
+}
+#endif /* ANDROID */
+
+
+static int tls_connection_ca_cert(void *_ssl_ctx, struct tls_connection *conn,
+				  const char *ca_cert, const u8 *ca_cert_blob,
+				  size_t ca_cert_blob_len, const char *ca_path)
+{
+	SSL_CTX *ssl_ctx = _ssl_ctx;
+
+	/*
+	 * Remove previously configured trusted CA certificates before adding
+	 * new ones.
+	 */
+	X509_STORE_free(ssl_ctx->cert_store);
+	ssl_ctx->cert_store = X509_STORE_new();
+	if (ssl_ctx->cert_store == NULL) {
+		wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
+			   "certificate store", __func__);
+		return -1;
+	}
+
+	SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
+	conn->ca_cert_verify = 1;
+
+	if (ca_cert && os_strncmp(ca_cert, "probe://", 8) == 0) {
+		wpa_printf(MSG_DEBUG, "OpenSSL: Probe for server certificate "
+			   "chain");
+		conn->cert_probe = 1;
+		conn->ca_cert_verify = 0;
+		return 0;
+	}
+
+	if (ca_cert && os_strncmp(ca_cert, "hash://", 7) == 0) {
+#ifdef CONFIG_SHA256
+		const char *pos = ca_cert + 7;
+		if (os_strncmp(pos, "server/sha256/", 14) != 0) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: Unsupported ca_cert "
+				   "hash value '%s'", ca_cert);
+			return -1;
+		}
+		pos += 14;
+		if (os_strlen(pos) != 32 * 2) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: Unexpected SHA256 "
+				   "hash length in ca_cert '%s'", ca_cert);
+			return -1;
+		}
+		if (hexstr2bin(pos, conn->srv_cert_hash, 32) < 0) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: Invalid SHA256 hash "
+				   "value in ca_cert '%s'", ca_cert);
+			return -1;
+		}
+		conn->server_cert_only = 1;
+		wpa_printf(MSG_DEBUG, "OpenSSL: Checking only server "
+			   "certificate match");
+		return 0;
+#else /* CONFIG_SHA256 */
+		wpa_printf(MSG_INFO, "No SHA256 included in the build - "
+			   "cannot validate server certificate hash");
+		return -1;
+#endif /* CONFIG_SHA256 */
+	}
+
+	if (ca_cert_blob) {
+		X509 *cert = d2i_X509(NULL, (OPENSSL_d2i_TYPE) &ca_cert_blob,
+				      ca_cert_blob_len);
+		if (cert == NULL) {
+			tls_show_errors(MSG_WARNING, __func__,
+					"Failed to parse ca_cert_blob");
+			return -1;
+		}
+
+		if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
+			unsigned long err = ERR_peek_error();
+			tls_show_errors(MSG_WARNING, __func__,
+					"Failed to add ca_cert_blob to "
+					"certificate store");
+			if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
+			    ERR_GET_REASON(err) ==
+			    X509_R_CERT_ALREADY_IN_HASH_TABLE) {
+				wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring "
+					   "cert already in hash table error",
+					   __func__);
+			} else {
+				X509_free(cert);
+				return -1;
+			}
+		}
+		X509_free(cert);
+		wpa_printf(MSG_DEBUG, "OpenSSL: %s - added ca_cert_blob "
+			   "to certificate store", __func__);
+		return 0;
+	}
+
+#ifdef ANDROID
+	if (ca_cert && os_strncmp("keystore://", ca_cert, 11) == 0) {
+		BIO *bio = BIO_from_keystore(&ca_cert[11]);
+		STACK_OF(X509_INFO) *stack = NULL;
+		int i;
+
+		if (bio) {
+			stack = PEM_X509_INFO_read_bio(bio, NULL, NULL, NULL);
+			BIO_free(bio);
+		}
+		if (!stack)
+			return -1;
+
+		for (i = 0; i < sk_X509_INFO_num(stack); ++i) {
+			X509_INFO *info = sk_X509_INFO_value(stack, i);
+			if (info->x509) {
+				X509_STORE_add_cert(ssl_ctx->cert_store,
+						    info->x509);
+			}
+			if (info->crl) {
+				X509_STORE_add_crl(ssl_ctx->cert_store,
+						   info->crl);
+			}
+		}
+		sk_X509_INFO_pop_free(stack, X509_INFO_free);
+		SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
+		return 0;
+	}
+#endif /* ANDROID */
+
+#ifdef CONFIG_NATIVE_WINDOWS
+	if (ca_cert && tls_cryptoapi_ca_cert(ssl_ctx, conn->ssl, ca_cert) ==
+	    0) {
+		wpa_printf(MSG_DEBUG, "OpenSSL: Added CA certificates from "
+			   "system certificate store");
+		return 0;
+	}
+#endif /* CONFIG_NATIVE_WINDOWS */
+
+	if (ca_cert || ca_path) {
+#ifndef OPENSSL_NO_STDIO
+		if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, ca_path) !=
+		    1) {
+			tls_show_errors(MSG_WARNING, __func__,
+					"Failed to load root certificates");
+			if (ca_cert &&
+			    tls_load_ca_der(ssl_ctx, ca_cert) == 0) {
+				wpa_printf(MSG_DEBUG, "OpenSSL: %s - loaded "
+					   "DER format CA certificate",
+					   __func__);
+			} else
+				return -1;
+		} else {
+			wpa_printf(MSG_DEBUG, "TLS: Trusted root "
+				   "certificate(s) loaded");
+			tls_get_errors(ssl_ctx);
+		}
+#else /* OPENSSL_NO_STDIO */
+		wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
+			   __func__);
+		return -1;
+#endif /* OPENSSL_NO_STDIO */
+	} else {
+		/* No ca_cert configured - do not try to verify server
+		 * certificate */
+		conn->ca_cert_verify = 0;
+	}
+
+	return 0;
+}
+
+
+static int tls_global_ca_cert(SSL_CTX *ssl_ctx, const char *ca_cert)
+{
+	if (ca_cert) {
+		if (SSL_CTX_load_verify_locations(ssl_ctx, ca_cert, NULL) != 1)
+		{
+			tls_show_errors(MSG_WARNING, __func__,
+					"Failed to load root certificates");
+			return -1;
+		}
+
+		wpa_printf(MSG_DEBUG, "TLS: Trusted root "
+			   "certificate(s) loaded");
+
+#ifndef OPENSSL_NO_STDIO
+		/* Add the same CAs to the client certificate requests */
+		SSL_CTX_set_client_CA_list(ssl_ctx,
+					   SSL_load_client_CA_file(ca_cert));
+#endif /* OPENSSL_NO_STDIO */
+	}
+
+	return 0;
+}
+
+
+int tls_global_set_verify(void *ssl_ctx, int check_crl)
+{
+	int flags;
+
+	if (check_crl) {
+		X509_STORE *cs = SSL_CTX_get_cert_store(ssl_ctx);
+		if (cs == NULL) {
+			tls_show_errors(MSG_INFO, __func__, "Failed to get "
+					"certificate store when enabling "
+					"check_crl");
+			return -1;
+		}
+		flags = X509_V_FLAG_CRL_CHECK;
+		if (check_crl == 2)
+			flags |= X509_V_FLAG_CRL_CHECK_ALL;
+		X509_STORE_set_flags(cs, flags);
+	}
+	return 0;
+}
+
+
+static int tls_connection_set_subject_match(struct tls_connection *conn,
+					    const char *subject_match,
+					    const char *altsubject_match)
+{
+	os_free(conn->subject_match);
+	conn->subject_match = NULL;
+	if (subject_match) {
+		conn->subject_match = os_strdup(subject_match);
+		if (conn->subject_match == NULL)
+			return -1;
+	}
+
+	os_free(conn->altsubject_match);
+	conn->altsubject_match = NULL;
+	if (altsubject_match) {
+		conn->altsubject_match = os_strdup(altsubject_match);
+		if (conn->altsubject_match == NULL)
+			return -1;
+	}
+
+	return 0;
+}
+
+
+int tls_connection_set_verify(void *ssl_ctx, struct tls_connection *conn,
+			      int verify_peer)
+{
+	static int counter = 0;
+
+	if (conn == NULL)
+		return -1;
+
+	if (verify_peer) {
+		conn->ca_cert_verify = 1;
+		SSL_set_verify(conn->ssl, SSL_VERIFY_PEER |
+			       SSL_VERIFY_FAIL_IF_NO_PEER_CERT |
+			       SSL_VERIFY_CLIENT_ONCE, tls_verify_cb);
+	} else {
+		conn->ca_cert_verify = 0;
+		SSL_set_verify(conn->ssl, SSL_VERIFY_NONE, NULL);
+	}
+
+	SSL_set_accept_state(conn->ssl);
+
+	/*
+	 * Set session id context in order to avoid fatal errors when client
+	 * tries to resume a session. However, set the context to a unique
+	 * value in order to effectively disable session resumption for now
+	 * since not all areas of the server code are ready for it (e.g.,
+	 * EAP-TTLS needs special handling for Phase 2 after abbreviated TLS
+	 * handshake).
+	 */
+	counter++;
+	SSL_set_session_id_context(conn->ssl,
+				   (const unsigned char *) &counter,
+				   sizeof(counter));
+
+	return 0;
+}
+
+
+static int tls_connection_client_cert(struct tls_connection *conn,
+				      const char *client_cert,
+				      const u8 *client_cert_blob,
+				      size_t client_cert_blob_len)
+{
+	if (client_cert == NULL && client_cert_blob == NULL)
+		return 0;
+
+	if (client_cert_blob &&
+	    SSL_use_certificate_ASN1(conn->ssl, (u8 *) client_cert_blob,
+				     client_cert_blob_len) == 1) {
+		wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_ASN1 --> "
+			   "OK");
+		return 0;
+	} else if (client_cert_blob) {
+		tls_show_errors(MSG_DEBUG, __func__,
+				"SSL_use_certificate_ASN1 failed");
+	}
+
+	if (client_cert == NULL)
+		return -1;
+
+#ifdef ANDROID
+	if (os_strncmp("keystore://", client_cert, 11) == 0) {
+		BIO *bio = BIO_from_keystore(&client_cert[11]);
+		X509 *x509 = NULL;
+		int ret = -1;
+		if (bio) {
+			x509 = PEM_read_bio_X509(bio, NULL, NULL, NULL);
+			BIO_free(bio);
+		}
+		if (x509) {
+			if (SSL_use_certificate(conn->ssl, x509) == 1)
+				ret = 0;
+			X509_free(x509);
+		}
+		return ret;
+	}
+#endif /* ANDROID */
+
+#ifndef OPENSSL_NO_STDIO
+	if (SSL_use_certificate_file(conn->ssl, client_cert,
+				     SSL_FILETYPE_ASN1) == 1) {
+		wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (DER)"
+			   " --> OK");
+		return 0;
+	}
+
+	if (SSL_use_certificate_file(conn->ssl, client_cert,
+				     SSL_FILETYPE_PEM) == 1) {
+		ERR_clear_error();
+		wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_certificate_file (PEM)"
+			   " --> OK");
+		return 0;
+	}
+
+	tls_show_errors(MSG_DEBUG, __func__,
+			"SSL_use_certificate_file failed");
+#else /* OPENSSL_NO_STDIO */
+	wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
+#endif /* OPENSSL_NO_STDIO */
+
+	return -1;
+}
+
+
+static int tls_global_client_cert(SSL_CTX *ssl_ctx, const char *client_cert)
+{
+#ifndef OPENSSL_NO_STDIO
+	if (client_cert == NULL)
+		return 0;
+
+	if (SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
+					 SSL_FILETYPE_ASN1) != 1 &&
+	    SSL_CTX_use_certificate_file(ssl_ctx, client_cert,
+					 SSL_FILETYPE_PEM) != 1) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to load client certificate");
+		return -1;
+	}
+	return 0;
+#else /* OPENSSL_NO_STDIO */
+	if (client_cert == NULL)
+		return 0;
+	wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO", __func__);
+	return -1;
+#endif /* OPENSSL_NO_STDIO */
+}
+
+
+static int tls_passwd_cb(char *buf, int size, int rwflag, void *password)
+{
+	if (password == NULL) {
+		return 0;
+	}
+	os_strlcpy(buf, (char *) password, size);
+	return os_strlen(buf);
+}
+
+
+#ifdef PKCS12_FUNCS
+static int tls_parse_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, PKCS12 *p12,
+			    const char *passwd)
+{
+	EVP_PKEY *pkey;
+	X509 *cert;
+	STACK_OF(X509) *certs;
+	int res = 0;
+	char buf[256];
+
+	pkey = NULL;
+	cert = NULL;
+	certs = NULL;
+	if (!PKCS12_parse(p12, passwd, &pkey, &cert, &certs)) {
+		tls_show_errors(MSG_DEBUG, __func__,
+				"Failed to parse PKCS12 file");
+		PKCS12_free(p12);
+		return -1;
+	}
+	wpa_printf(MSG_DEBUG, "TLS: Successfully parsed PKCS12 data");
+
+	if (cert) {
+		X509_NAME_oneline(X509_get_subject_name(cert), buf,
+				  sizeof(buf));
+		wpa_printf(MSG_DEBUG, "TLS: Got certificate from PKCS12: "
+			   "subject='%s'", buf);
+		if (ssl) {
+			if (SSL_use_certificate(ssl, cert) != 1)
+				res = -1;
+		} else {
+			if (SSL_CTX_use_certificate(ssl_ctx, cert) != 1)
+				res = -1;
+		}
+		X509_free(cert);
+	}
+
+	if (pkey) {
+		wpa_printf(MSG_DEBUG, "TLS: Got private key from PKCS12");
+		if (ssl) {
+			if (SSL_use_PrivateKey(ssl, pkey) != 1)
+				res = -1;
+		} else {
+			if (SSL_CTX_use_PrivateKey(ssl_ctx, pkey) != 1)
+				res = -1;
+		}
+		EVP_PKEY_free(pkey);
+	}
+
+	if (certs) {
+		while ((cert = sk_X509_pop(certs)) != NULL) {
+			X509_NAME_oneline(X509_get_subject_name(cert), buf,
+					  sizeof(buf));
+			wpa_printf(MSG_DEBUG, "TLS: additional certificate"
+				   " from PKCS12: subject='%s'", buf);
+			/*
+			 * There is no SSL equivalent for the chain cert - so
+			 * always add it to the context...
+			 */
+			if (SSL_CTX_add_extra_chain_cert(ssl_ctx, cert) != 1) {
+				res = -1;
+				break;
+			}
+		}
+		sk_X509_free(certs);
+	}
+
+	PKCS12_free(p12);
+
+	if (res < 0)
+		tls_get_errors(ssl_ctx);
+
+	return res;
+}
+#endif  /* PKCS12_FUNCS */
+
+
+static int tls_read_pkcs12(SSL_CTX *ssl_ctx, SSL *ssl, const char *private_key,
+			   const char *passwd)
+{
+#ifdef PKCS12_FUNCS
+	FILE *f;
+	PKCS12 *p12;
+
+	f = fopen(private_key, "rb");
+	if (f == NULL)
+		return -1;
+
+	p12 = d2i_PKCS12_fp(f, NULL);
+	fclose(f);
+
+	if (p12 == NULL) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to use PKCS#12 file");
+		return -1;
+	}
+
+	return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
+
+#else /* PKCS12_FUNCS */
+	wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot read "
+		   "p12/pfx files");
+	return -1;
+#endif  /* PKCS12_FUNCS */
+}
+
+
+static int tls_read_pkcs12_blob(SSL_CTX *ssl_ctx, SSL *ssl,
+				const u8 *blob, size_t len, const char *passwd)
+{
+#ifdef PKCS12_FUNCS
+	PKCS12 *p12;
+
+	p12 = d2i_PKCS12(NULL, (OPENSSL_d2i_TYPE) &blob, len);
+	if (p12 == NULL) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to use PKCS#12 blob");
+		return -1;
+	}
+
+	return tls_parse_pkcs12(ssl_ctx, ssl, p12, passwd);
+
+#else /* PKCS12_FUNCS */
+	wpa_printf(MSG_INFO, "TLS: PKCS12 support disabled - cannot parse "
+		   "p12/pfx blobs");
+	return -1;
+#endif  /* PKCS12_FUNCS */
+}
+
+
+#ifndef OPENSSL_NO_ENGINE
+static int tls_engine_get_cert(struct tls_connection *conn,
+			       const char *cert_id,
+			       X509 **cert)
+{
+	/* this runs after the private key is loaded so no PIN is required */
+	struct {
+		const char *cert_id;
+		X509 *cert;
+	} params;
+	params.cert_id = cert_id;
+	params.cert = NULL;
+
+	if (!ENGINE_ctrl_cmd(conn->engine, "LOAD_CERT_CTRL",
+			     0, &params, NULL, 1)) {
+		wpa_printf(MSG_ERROR, "ENGINE: cannot load client cert with id"
+			   " '%s' [%s]", cert_id,
+			   ERR_error_string(ERR_get_error(), NULL));
+		return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
+	}
+	if (!params.cert) {
+		wpa_printf(MSG_ERROR, "ENGINE: did not properly cert with id"
+			   " '%s'", cert_id);
+		return TLS_SET_PARAMS_ENGINE_PRV_INIT_FAILED;
+	}
+	*cert = params.cert;
+	return 0;
+}
+#endif /* OPENSSL_NO_ENGINE */
+
+
+static int tls_connection_engine_client_cert(struct tls_connection *conn,
+					     const char *cert_id)
+{
+#ifndef OPENSSL_NO_ENGINE
+	X509 *cert;
+
+	if (tls_engine_get_cert(conn, cert_id, &cert))
+		return -1;
+
+	if (!SSL_use_certificate(conn->ssl, cert)) {
+		tls_show_errors(MSG_ERROR, __func__,
+				"SSL_use_certificate failed");
+                X509_free(cert);
+		return -1;
+	}
+	X509_free(cert);
+	wpa_printf(MSG_DEBUG, "ENGINE: SSL_use_certificate --> "
+		   "OK");
+	return 0;
+
+#else /* OPENSSL_NO_ENGINE */
+	return -1;
+#endif /* OPENSSL_NO_ENGINE */
+}
+
+
+static int tls_connection_engine_ca_cert(void *_ssl_ctx,
+					 struct tls_connection *conn,
+					 const char *ca_cert_id)
+{
+#ifndef OPENSSL_NO_ENGINE
+	X509 *cert;
+	SSL_CTX *ssl_ctx = _ssl_ctx;
+
+	if (tls_engine_get_cert(conn, ca_cert_id, &cert))
+		return -1;
+
+	/* start off the same as tls_connection_ca_cert */
+	X509_STORE_free(ssl_ctx->cert_store);
+	ssl_ctx->cert_store = X509_STORE_new();
+	if (ssl_ctx->cert_store == NULL) {
+		wpa_printf(MSG_DEBUG, "OpenSSL: %s - failed to allocate new "
+			   "certificate store", __func__);
+		X509_free(cert);
+		return -1;
+	}
+	if (!X509_STORE_add_cert(ssl_ctx->cert_store, cert)) {
+		unsigned long err = ERR_peek_error();
+		tls_show_errors(MSG_WARNING, __func__,
+				"Failed to add CA certificate from engine "
+				"to certificate store");
+		if (ERR_GET_LIB(err) == ERR_LIB_X509 &&
+		    ERR_GET_REASON(err) == X509_R_CERT_ALREADY_IN_HASH_TABLE) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: %s - ignoring cert"
+				   " already in hash table error",
+				   __func__);
+		} else {
+			X509_free(cert);
+			return -1;
+		}
+	}
+	X509_free(cert);
+	wpa_printf(MSG_DEBUG, "OpenSSL: %s - added CA certificate from engine "
+		   "to certificate store", __func__);
+	SSL_set_verify(conn->ssl, SSL_VERIFY_PEER, tls_verify_cb);
+	return 0;
+
+#else /* OPENSSL_NO_ENGINE */
+	return -1;
+#endif /* OPENSSL_NO_ENGINE */
+}
+
+
+static int tls_connection_engine_private_key(struct tls_connection *conn)
+{
+#ifndef OPENSSL_NO_ENGINE
+	if (SSL_use_PrivateKey(conn->ssl, conn->private_key) != 1) {
+		tls_show_errors(MSG_ERROR, __func__,
+				"ENGINE: cannot use private key for TLS");
+		return -1;
+	}
+	if (!SSL_check_private_key(conn->ssl)) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Private key failed verification");
+		return -1;
+	}
+	return 0;
+#else /* OPENSSL_NO_ENGINE */
+	wpa_printf(MSG_ERROR, "SSL: Configuration uses engine, but "
+		   "engine support was not compiled in");
+	return -1;
+#endif /* OPENSSL_NO_ENGINE */
+}
+
+
+static int tls_connection_private_key(void *_ssl_ctx,
+				      struct tls_connection *conn,
+				      const char *private_key,
+				      const char *private_key_passwd,
+				      const u8 *private_key_blob,
+				      size_t private_key_blob_len)
+{
+	SSL_CTX *ssl_ctx = _ssl_ctx;
+	char *passwd;
+	int ok;
+
+	if (private_key == NULL && private_key_blob == NULL)
+		return 0;
+
+	if (private_key_passwd) {
+		passwd = os_strdup(private_key_passwd);
+		if (passwd == NULL)
+			return -1;
+	} else
+		passwd = NULL;
+
+	SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
+	SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
+
+	ok = 0;
+	while (private_key_blob) {
+		if (SSL_use_PrivateKey_ASN1(EVP_PKEY_RSA, conn->ssl,
+					    (u8 *) private_key_blob,
+					    private_key_blob_len) == 1) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
+				   "ASN1(EVP_PKEY_RSA) --> OK");
+			ok = 1;
+			break;
+		}
+
+		if (SSL_use_PrivateKey_ASN1(EVP_PKEY_DSA, conn->ssl,
+					    (u8 *) private_key_blob,
+					    private_key_blob_len) == 1) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: SSL_use_PrivateKey_"
+				   "ASN1(EVP_PKEY_DSA) --> OK");
+			ok = 1;
+			break;
+		}
+
+		if (SSL_use_RSAPrivateKey_ASN1(conn->ssl,
+					       (u8 *) private_key_blob,
+					       private_key_blob_len) == 1) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: "
+				   "SSL_use_RSAPrivateKey_ASN1 --> OK");
+			ok = 1;
+			break;
+		}
+
+		if (tls_read_pkcs12_blob(ssl_ctx, conn->ssl, private_key_blob,
+					 private_key_blob_len, passwd) == 0) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: PKCS#12 as blob --> "
+				   "OK");
+			ok = 1;
+			break;
+		}
+
+		break;
+	}
+
+#ifdef ANDROID
+	if (!ok && private_key &&
+	    os_strncmp("keystore://", private_key, 11) == 0) {
+		BIO *bio = BIO_from_keystore(&private_key[11]);
+		EVP_PKEY *pkey = NULL;
+		if (bio) {
+			pkey = PEM_read_bio_PrivateKey(bio, NULL, NULL, NULL);
+			BIO_free(bio);
+		}
+		if (pkey) {
+			if (SSL_use_PrivateKey(conn->ssl, pkey) == 1) {
+				wpa_printf(MSG_DEBUG, "OpenSSL: Private key "
+					   "from keystore");
+				ok = 1;
+			}
+			EVP_PKEY_free(pkey);
+		}
+	}
+#endif /* ANDROID */
+
+	while (!ok && private_key) {
+#ifndef OPENSSL_NO_STDIO
+		if (SSL_use_PrivateKey_file(conn->ssl, private_key,
+					    SSL_FILETYPE_ASN1) == 1) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: "
+				   "SSL_use_PrivateKey_File (DER) --> OK");
+			ok = 1;
+			break;
+		}
+
+		if (SSL_use_PrivateKey_file(conn->ssl, private_key,
+					    SSL_FILETYPE_PEM) == 1) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: "
+				   "SSL_use_PrivateKey_File (PEM) --> OK");
+			ok = 1;
+			break;
+		}
+#else /* OPENSSL_NO_STDIO */
+		wpa_printf(MSG_DEBUG, "OpenSSL: %s - OPENSSL_NO_STDIO",
+			   __func__);
+#endif /* OPENSSL_NO_STDIO */
+
+		if (tls_read_pkcs12(ssl_ctx, conn->ssl, private_key, passwd)
+		    == 0) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: Reading PKCS#12 file "
+				   "--> OK");
+			ok = 1;
+			break;
+		}
+
+		if (tls_cryptoapi_cert(conn->ssl, private_key) == 0) {
+			wpa_printf(MSG_DEBUG, "OpenSSL: Using CryptoAPI to "
+				   "access certificate store --> OK");
+			ok = 1;
+			break;
+		}
+
+		break;
+	}
+
+	if (!ok) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to load private key");
+		os_free(passwd);
+		return -1;
+	}
+	ERR_clear_error();
+	SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
+	os_free(passwd);
+	
+	if (!SSL_check_private_key(conn->ssl)) {
+		tls_show_errors(MSG_INFO, __func__, "Private key failed "
+				"verification");
+		return -1;
+	}
+
+	wpa_printf(MSG_DEBUG, "SSL: Private key loaded successfully");
+	return 0;
+}
+
+
+static int tls_global_private_key(SSL_CTX *ssl_ctx, const char *private_key,
+				  const char *private_key_passwd)
+{
+	char *passwd;
+
+	if (private_key == NULL)
+		return 0;
+
+	if (private_key_passwd) {
+		passwd = os_strdup(private_key_passwd);
+		if (passwd == NULL)
+			return -1;
+	} else
+		passwd = NULL;
+
+	SSL_CTX_set_default_passwd_cb(ssl_ctx, tls_passwd_cb);
+	SSL_CTX_set_default_passwd_cb_userdata(ssl_ctx, passwd);
+	if (
+#ifndef OPENSSL_NO_STDIO
+	    SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
+					SSL_FILETYPE_ASN1) != 1 &&
+	    SSL_CTX_use_PrivateKey_file(ssl_ctx, private_key,
+					SSL_FILETYPE_PEM) != 1 &&
+#endif /* OPENSSL_NO_STDIO */
+	    tls_read_pkcs12(ssl_ctx, NULL, private_key, passwd)) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Failed to load private key");
+		os_free(passwd);
+		ERR_clear_error();
+		return -1;
+	}
+	os_free(passwd);
+	ERR_clear_error();
+	SSL_CTX_set_default_passwd_cb(ssl_ctx, NULL);
+	
+	if (!SSL_CTX_check_private_key(ssl_ctx)) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Private key failed verification");
+		return -1;
+	}
+
+	return 0;
+}
+
+
+static int tls_connection_dh(struct tls_connection *conn, const char *dh_file)
+{
+#ifdef OPENSSL_NO_DH
+	if (dh_file == NULL)
+		return 0;
+	wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
+		   "dh_file specified");
+	return -1;
+#else /* OPENSSL_NO_DH */
+	DH *dh;
+	BIO *bio;
+
+	/* TODO: add support for dh_blob */
+	if (dh_file == NULL)
+		return 0;
+	if (conn == NULL)
+		return -1;
+
+	bio = BIO_new_file(dh_file, "r");
+	if (bio == NULL) {
+		wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
+			   dh_file, ERR_error_string(ERR_get_error(), NULL));
+		return -1;
+	}
+	dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
+	BIO_free(bio);
+#ifndef OPENSSL_NO_DSA
+	while (dh == NULL) {
+		DSA *dsa;
+		wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
+			   " trying to parse as DSA params", dh_file,
+			   ERR_error_string(ERR_get_error(), NULL));
+		bio = BIO_new_file(dh_file, "r");
+		if (bio == NULL)
+			break;
+		dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
+		BIO_free(bio);
+		if (!dsa) {
+			wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
+				   "'%s': %s", dh_file,
+				   ERR_error_string(ERR_get_error(), NULL));
+			break;
+		}
+
+		wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
+		dh = DSA_dup_DH(dsa);
+		DSA_free(dsa);
+		if (dh == NULL) {
+			wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
+				   "params into DH params");
+			break;
+		}
+		break;
+	}
+#endif /* !OPENSSL_NO_DSA */
+	if (dh == NULL) {
+		wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
+			   "'%s'", dh_file);
+		return -1;
+	}
+
+	if (SSL_set_tmp_dh(conn->ssl, dh) != 1) {
+		wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
+			   "%s", dh_file,
+			   ERR_error_string(ERR_get_error(), NULL));
+		DH_free(dh);
+		return -1;
+	}
+	DH_free(dh);
+	return 0;
+#endif /* OPENSSL_NO_DH */
+}
+
+
+static int tls_global_dh(SSL_CTX *ssl_ctx, const char *dh_file)
+{
+#ifdef OPENSSL_NO_DH
+	if (dh_file == NULL)
+		return 0;
+	wpa_printf(MSG_ERROR, "TLS: openssl does not include DH support, but "
+		   "dh_file specified");
+	return -1;
+#else /* OPENSSL_NO_DH */
+	DH *dh;
+	BIO *bio;
+
+	/* TODO: add support for dh_blob */
+	if (dh_file == NULL)
+		return 0;
+	if (ssl_ctx == NULL)
+		return -1;
+
+	bio = BIO_new_file(dh_file, "r");
+	if (bio == NULL) {
+		wpa_printf(MSG_INFO, "TLS: Failed to open DH file '%s': %s",
+			   dh_file, ERR_error_string(ERR_get_error(), NULL));
+		return -1;
+	}
+	dh = PEM_read_bio_DHparams(bio, NULL, NULL, NULL);
+	BIO_free(bio);
+#ifndef OPENSSL_NO_DSA
+	while (dh == NULL) {
+		DSA *dsa;
+		wpa_printf(MSG_DEBUG, "TLS: Failed to parse DH file '%s': %s -"
+			   " trying to parse as DSA params", dh_file,
+			   ERR_error_string(ERR_get_error(), NULL));
+		bio = BIO_new_file(dh_file, "r");
+		if (bio == NULL)
+			break;
+		dsa = PEM_read_bio_DSAparams(bio, NULL, NULL, NULL);
+		BIO_free(bio);
+		if (!dsa) {
+			wpa_printf(MSG_DEBUG, "TLS: Failed to parse DSA file "
+				   "'%s': %s", dh_file,
+				   ERR_error_string(ERR_get_error(), NULL));
+			break;
+		}
+
+		wpa_printf(MSG_DEBUG, "TLS: DH file in DSA param format");
+		dh = DSA_dup_DH(dsa);
+		DSA_free(dsa);
+		if (dh == NULL) {
+			wpa_printf(MSG_INFO, "TLS: Failed to convert DSA "
+				   "params into DH params");
+			break;
+		}
+		break;
+	}
+#endif /* !OPENSSL_NO_DSA */
+	if (dh == NULL) {
+		wpa_printf(MSG_INFO, "TLS: Failed to read/parse DH/DSA file "
+			   "'%s'", dh_file);
+		return -1;
+	}
+
+	if (SSL_CTX_set_tmp_dh(ssl_ctx, dh) != 1) {
+		wpa_printf(MSG_INFO, "TLS: Failed to set DH params from '%s': "
+			   "%s", dh_file,
+			   ERR_error_string(ERR_get_error(), NULL));
+		DH_free(dh);
+		return -1;
+	}
+	DH_free(dh);
+	return 0;
+#endif /* OPENSSL_NO_DH */
+}
+
+
+int tls_connection_get_keys(void *ssl_ctx, struct tls_connection *conn,
+			    struct tls_keys *keys)
+{
+	SSL *ssl;
+
+	if (conn == NULL || keys == NULL)
+		return -1;
+	ssl = conn->ssl;
+	if (ssl == NULL || ssl->s3 == NULL || ssl->session == NULL)
+		return -1;
+
+	os_memset(keys, 0, sizeof(*keys));
+	keys->master_key = ssl->session->master_key;
+	keys->master_key_len = ssl->session->master_key_length;
+	keys->client_random = ssl->s3->client_random;
+	keys->client_random_len = SSL3_RANDOM_SIZE;
+	keys->server_random = ssl->s3->server_random;
+	keys->server_random_len = SSL3_RANDOM_SIZE;
+
+	return 0;
+}
+
+
+int tls_connection_prf(void *tls_ctx, struct tls_connection *conn,
+		       const char *label, int server_random_first,
+		       u8 *out, size_t out_len)
+{
+	return -1;
+}
+
+
+static struct wpabuf *
+openssl_handshake(struct tls_connection *conn, const struct wpabuf *in_data,
+		  int server)
+{
+	int res;
+	struct wpabuf *out_data;
+
+	/*
+	 * Give TLS handshake data from the server (if available) to OpenSSL
+	 * for processing.
+	 */
+	if (in_data &&
+	    BIO_write(conn->ssl_in, wpabuf_head(in_data), wpabuf_len(in_data))
+	    < 0) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Handshake failed - BIO_write");
+		return NULL;
+	}
+
+	/* Initiate TLS handshake or continue the existing handshake */
+	if (server)
+		res = SSL_accept(conn->ssl);
+	else
+		res = SSL_connect(conn->ssl);
+	if (res != 1) {
+		int err = SSL_get_error(conn->ssl, res);
+		if (err == SSL_ERROR_WANT_READ)
+			wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want "
+				   "more data");
+		else if (err == SSL_ERROR_WANT_WRITE)
+			wpa_printf(MSG_DEBUG, "SSL: SSL_connect - want to "
+				   "write");
+		else {
+			tls_show_errors(MSG_INFO, __func__, "SSL_connect");
+			conn->failed++;
+		}
+	}
+
+	/* Get the TLS handshake data to be sent to the server */
+	res = BIO_ctrl_pending(conn->ssl_out);
+	wpa_printf(MSG_DEBUG, "SSL: %d bytes pending from ssl_out", res);
+	out_data = wpabuf_alloc(res);
+	if (out_data == NULL) {
+		wpa_printf(MSG_DEBUG, "SSL: Failed to allocate memory for "
+			   "handshake output (%d bytes)", res);
+		if (BIO_reset(conn->ssl_out) < 0) {
+			tls_show_errors(MSG_INFO, __func__,
+					"BIO_reset failed");
+		}
+		return NULL;
+	}
+	res = res == 0 ? 0 : BIO_read(conn->ssl_out, wpabuf_mhead(out_data),
+				      res);
+	if (res < 0) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Handshake failed - BIO_read");
+		if (BIO_reset(conn->ssl_out) < 0) {
+			tls_show_errors(MSG_INFO, __func__,
+					"BIO_reset failed");
+		}
+		wpabuf_free(out_data);
+		return NULL;
+	}
+	wpabuf_put(out_data, res);
+
+	return out_data;
+}
+
+
+static struct wpabuf *
+openssl_get_appl_data(struct tls_connection *conn, size_t max_len)
+{
+	struct wpabuf *appl_data;
+	int res;
+
+	appl_data = wpabuf_alloc(max_len + 100);
+	if (appl_data == NULL)
+		return NULL;
+
+	res = SSL_read(conn->ssl, wpabuf_mhead(appl_data),
+		       wpabuf_size(appl_data));
+	if (res < 0) {
+		int err = SSL_get_error(conn->ssl, res);
+		if (err == SSL_ERROR_WANT_READ ||
+		    err == SSL_ERROR_WANT_WRITE) {
+			wpa_printf(MSG_DEBUG, "SSL: No Application Data "
+				   "included");
+		} else {
+			tls_show_errors(MSG_INFO, __func__,
+					"Failed to read possible "
+					"Application Data");
+		}
+		wpabuf_free(appl_data);
+		return NULL;
+	}
+
+	wpabuf_put(appl_data, res);
+	wpa_hexdump_buf_key(MSG_MSGDUMP, "SSL: Application Data in Finished "
+			    "message", appl_data);
+
+	return appl_data;
+}
+
+
+static struct wpabuf *
+openssl_connection_handshake(struct tls_connection *conn,
+			     const struct wpabuf *in_data,
+			     struct wpabuf **appl_data, int server)
+{
+	struct wpabuf *out_data;
+
+	if (appl_data)
+		*appl_data = NULL;
+
+	out_data = openssl_handshake(conn, in_data, server);
+	if (out_data == NULL)
+		return NULL;
+
+	if (SSL_is_init_finished(conn->ssl) && appl_data && in_data)
+		*appl_data = openssl_get_appl_data(conn, wpabuf_len(in_data));
+
+	return out_data;
+}
+
+
+struct wpabuf *
+tls_connection_handshake(void *ssl_ctx, struct tls_connection *conn,
+			 const struct wpabuf *in_data,
+			 struct wpabuf **appl_data)
+{
+	return openssl_connection_handshake(conn, in_data, appl_data, 0);
+}
+
+
+struct wpabuf * tls_connection_server_handshake(void *tls_ctx,
+						struct tls_connection *conn,
+						const struct wpabuf *in_data,
+						struct wpabuf **appl_data)
+{
+	return openssl_connection_handshake(conn, in_data, appl_data, 1);
+}
+
+
+struct wpabuf * tls_connection_encrypt(void *tls_ctx,
+				       struct tls_connection *conn,
+				       const struct wpabuf *in_data)
+{
+	int res;
+	struct wpabuf *buf;
+
+	if (conn == NULL)
+		return NULL;
+
+	/* Give plaintext data for OpenSSL to encrypt into the TLS tunnel. */
+	if ((res = BIO_reset(conn->ssl_in)) < 0 ||
+	    (res = BIO_reset(conn->ssl_out)) < 0) {
+		tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
+		return NULL;
+	}
+	res = SSL_write(conn->ssl, wpabuf_head(in_data), wpabuf_len(in_data));
+	if (res < 0) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Encryption failed - SSL_write");
+		return NULL;
+	}
+
+	/* Read encrypted data to be sent to the server */
+	buf = wpabuf_alloc(wpabuf_len(in_data) + 300);
+	if (buf == NULL)
+		return NULL;
+	res = BIO_read(conn->ssl_out, wpabuf_mhead(buf), wpabuf_size(buf));
+	if (res < 0) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Encryption failed - BIO_read");
+		wpabuf_free(buf);
+		return NULL;
+	}
+	wpabuf_put(buf, res);
+
+	return buf;
+}
+
+
+struct wpabuf * tls_connection_decrypt(void *tls_ctx,
+				       struct tls_connection *conn,
+				       const struct wpabuf *in_data)
+{
+	int res;
+	struct wpabuf *buf;
+
+	/* Give encrypted data from TLS tunnel for OpenSSL to decrypt. */
+	res = BIO_write(conn->ssl_in, wpabuf_head(in_data),
+			wpabuf_len(in_data));
+	if (res < 0) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Decryption failed - BIO_write");
+		return NULL;
+	}
+	if (BIO_reset(conn->ssl_out) < 0) {
+		tls_show_errors(MSG_INFO, __func__, "BIO_reset failed");
+		return NULL;
+	}
+
+	/* Read decrypted data for further processing */
+	/*
+	 * Even though we try to disable TLS compression, it is possible that
+	 * this cannot be done with all TLS libraries. Add extra buffer space
+	 * to handle the possibility of the decrypted data being longer than
+	 * input data.
+	 */
+	buf = wpabuf_alloc((wpabuf_len(in_data) + 500) * 3);
+	if (buf == NULL)
+		return NULL;
+	res = SSL_read(conn->ssl, wpabuf_mhead(buf), wpabuf_size(buf));
+	if (res < 0) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Decryption failed - SSL_read");
+		wpabuf_free(buf);
+		return NULL;
+	}
+	wpabuf_put(buf, res);
+
+	return buf;
+}
+
+
+int tls_connection_resumed(void *ssl_ctx, struct tls_connection *conn)
+{
+	return conn ? conn->ssl->hit : 0;
+}
+
+
+int tls_connection_set_cipher_list(void *tls_ctx, struct tls_connection *conn,
+				   u8 *ciphers)
+{
+	char buf[100], *pos, *end;
+	u8 *c;
+	int ret;
+
+	if (conn == NULL || conn->ssl == NULL || ciphers == NULL)
+		return -1;
+
+	buf[0] = '\0';
+	pos = buf;
+	end = pos + sizeof(buf);
+
+	c = ciphers;
+	while (*c != TLS_CIPHER_NONE) {
+		const char *suite;
+
+		switch (*c) {
+		case TLS_CIPHER_RC4_SHA:
+			suite = "RC4-SHA";
+			break;
+		case TLS_CIPHER_AES128_SHA:
+			suite = "AES128-SHA";
+			break;
+		case TLS_CIPHER_RSA_DHE_AES128_SHA:
+			suite = "DHE-RSA-AES128-SHA";
+			break;
+		case TLS_CIPHER_ANON_DH_AES128_SHA:
+			suite = "ADH-AES128-SHA";
+			break;
+		default:
+			wpa_printf(MSG_DEBUG, "TLS: Unsupported "
+				   "cipher selection: %d", *c);
+			return -1;
+		}
+		ret = os_snprintf(pos, end - pos, ":%s", suite);
+		if (ret < 0 || ret >= end - pos)
+			break;
+		pos += ret;
+
+		c++;
+	}
+
+	wpa_printf(MSG_DEBUG, "OpenSSL: cipher suites: %s", buf + 1);
+
+	if (SSL_set_cipher_list(conn->ssl, buf + 1) != 1) {
+		tls_show_errors(MSG_INFO, __func__,
+				"Cipher suite configuration failed");
+		return -1;
+	}
+
+	return 0;
+}
+
+
+int tls_get_cipher(void *ssl_ctx, struct tls_connection *conn,
+		   char *buf, size_t buflen)
+{
+	const char *name;
+	if (conn == NULL || conn->ssl == NULL)
+		return -1;
+
+	name = SSL_get_cipher(conn->ssl);
+	if (name == NULL)
+		return -1;
+
+	os_strlcpy(buf, name, buflen);
+	return 0;
+}
+
+
+int tls_connection_enable_workaround(void *ssl_ctx,
+				     struct tls_connection *conn)
+{
+	SSL_set_options(conn->ssl, SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS);
+
+	return 0;
+}
+
+
+#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
+/* ClientHello TLS extensions require a patch to openssl, so this function is
+ * commented out unless explicitly needed for EAP-FAST in order to be able to
+ * build this file with unmodified openssl. */
+int tls_connection_client_hello_ext(void *ssl_ctx, struct tls_connection *conn,
+				    int ext_type, const u8 *data,
+				    size_t data_len)
+{
+	if (conn == NULL || conn->ssl == NULL || ext_type != 35)
+		return -1;
+
+#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
+	if (SSL_set_session_ticket_ext(conn->ssl, (void *) data,
+				       data_len) != 1)
+		return -1;
+#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+	if (SSL_set_hello_extension(conn->ssl, ext_type, (void *) data,
+				    data_len) != 1)
+		return -1;
+#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+
+	return 0;
+}
+#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
+
+
+int tls_connection_get_failed(void *ssl_ctx, struct tls_connection *conn)
+{
+	if (conn == NULL)
+		return -1;
+	return conn->failed;
+}
+
+
+int tls_connection_get_read_alerts(void *ssl_ctx, struct tls_connection *conn)
+{
+	if (conn == NULL)
+		return -1;
+	return conn->read_alerts;
+}
+
+
+int tls_connection_get_write_alerts(void *ssl_ctx, struct tls_connection *conn)
+{
+	if (conn == NULL)
+		return -1;
+	return conn->write_alerts;
+}
+
+
+int tls_connection_set_params(void *tls_ctx, struct tls_connection *conn,
+			      const struct tls_connection_params *params)
+{
+	int ret;
+	unsigned long err;
+
+	if (conn == NULL)
+		return -1;
+
+	while ((err = ERR_get_error())) {
+		wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
+			   __func__, ERR_error_string(err, NULL));
+	}
+
+	if (params->engine) {
+		wpa_printf(MSG_DEBUG, "SSL: Initializing TLS engine");
+		ret = tls_engine_init(conn, params->engine_id, params->pin,
+				      params->key_id, params->cert_id,
+				      params->ca_cert_id);
+		if (ret)
+			return ret;
+	}
+	if (tls_connection_set_subject_match(conn,
+					     params->subject_match,
+					     params->altsubject_match))
+		return -1;
+
+	if (params->engine && params->ca_cert_id) {
+		if (tls_connection_engine_ca_cert(tls_ctx, conn,
+						  params->ca_cert_id))
+			return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
+	} else if (tls_connection_ca_cert(tls_ctx, conn, params->ca_cert,
+					  params->ca_cert_blob,
+					  params->ca_cert_blob_len,
+					  params->ca_path))
+		return -1;
+
+	if (params->engine && params->cert_id) {
+		if (tls_connection_engine_client_cert(conn, params->cert_id))
+			return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
+	} else if (tls_connection_client_cert(conn, params->client_cert,
+					      params->client_cert_blob,
+					      params->client_cert_blob_len))
+		return -1;
+
+	if (params->engine && params->key_id) {
+		wpa_printf(MSG_DEBUG, "TLS: Using private key from engine");
+		if (tls_connection_engine_private_key(conn))
+			return TLS_SET_PARAMS_ENGINE_PRV_VERIFY_FAILED;
+	} else if (tls_connection_private_key(tls_ctx, conn,
+					      params->private_key,
+					      params->private_key_passwd,
+					      params->private_key_blob,
+					      params->private_key_blob_len)) {
+		wpa_printf(MSG_INFO, "TLS: Failed to load private key '%s'",
+			   params->private_key);
+		return -1;
+	}
+
+	if (tls_connection_dh(conn, params->dh_file)) {
+		wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
+			   params->dh_file);
+		return -1;
+	}
+
+	tls_get_errors(tls_ctx);
+
+	return 0;
+}
+
+
+int tls_global_set_params(void *tls_ctx,
+			  const struct tls_connection_params *params)
+{
+	SSL_CTX *ssl_ctx = tls_ctx;
+	unsigned long err;
+
+	while ((err = ERR_get_error())) {
+		wpa_printf(MSG_INFO, "%s: Clearing pending SSL error: %s",
+			   __func__, ERR_error_string(err, NULL));
+	}
+
+	if (tls_global_ca_cert(ssl_ctx, params->ca_cert))
+		return -1;
+
+	if (tls_global_client_cert(ssl_ctx, params->client_cert))
+		return -1;
+
+	if (tls_global_private_key(ssl_ctx, params->private_key,
+				   params->private_key_passwd))
+		return -1;
+
+	if (tls_global_dh(ssl_ctx, params->dh_file)) {
+		wpa_printf(MSG_INFO, "TLS: Failed to load DH file '%s'",
+			   params->dh_file);
+		return -1;
+	}
+
+	return 0;
+}
+
+
+int tls_connection_get_keyblock_size(void *tls_ctx,
+				     struct tls_connection *conn)
+{
+	const EVP_CIPHER *c;
+	const EVP_MD *h;
+
+	if (conn == NULL || conn->ssl == NULL ||
+	    conn->ssl->enc_read_ctx == NULL ||
+	    conn->ssl->enc_read_ctx->cipher == NULL ||
+	    conn->ssl->read_hash == NULL)
+		return -1;
+
+	c = conn->ssl->enc_read_ctx->cipher;
+#if OPENSSL_VERSION_NUMBER >= 0x00909000L
+	h = EVP_MD_CTX_md(conn->ssl->read_hash);
+#else
+	h = conn->ssl->read_hash;
+#endif
+
+	return 2 * (EVP_CIPHER_key_length(c) +
+		    EVP_MD_size(h) +
+		    EVP_CIPHER_iv_length(c));
+}
+
+
+unsigned int tls_capabilities(void *tls_ctx)
+{
+	return 0;
+}
+
+
+int tls_connection_set_ia(void *tls_ctx, struct tls_connection *conn,
+			  int tls_ia)
+{
+	return -1;
+}
+
+
+struct wpabuf * tls_connection_ia_send_phase_finished(
+	void *tls_ctx, struct tls_connection *conn, int final)
+{
+	return NULL;
+}
+
+
+int tls_connection_ia_final_phase_finished(void *tls_ctx,
+					   struct tls_connection *conn)
+{
+	return -1;
+}
+
+
+int tls_connection_ia_permute_inner_secret(void *tls_ctx,
+					   struct tls_connection *conn,
+					   const u8 *key, size_t key_len)
+{
+	return -1;
+}
+
+
+#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
+/* Pre-shared secred requires a patch to openssl, so this function is
+ * commented out unless explicitly needed for EAP-FAST in order to be able to
+ * build this file with unmodified openssl. */
+
+static int tls_sess_sec_cb(SSL *s, void *secret, int *secret_len,
+			   STACK_OF(SSL_CIPHER) *peer_ciphers,
+			   SSL_CIPHER **cipher, void *arg)
+{
+	struct tls_connection *conn = arg;
+	int ret;
+
+	if (conn == NULL || conn->session_ticket_cb == NULL)
+		return 0;
+
+	ret = conn->session_ticket_cb(conn->session_ticket_cb_ctx,
+				      conn->session_ticket,
+				      conn->session_ticket_len,
+				      s->s3->client_random,
+				      s->s3->server_random, secret);
+	os_free(conn->session_ticket);
+	conn->session_ticket = NULL;
+
+	if (ret <= 0)
+		return 0;
+
+	*secret_len = SSL_MAX_MASTER_KEY_LENGTH;
+	return 1;
+}
+
+
+#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
+static int tls_session_ticket_ext_cb(SSL *s, const unsigned char *data,
+				     int len, void *arg)
+{
+	struct tls_connection *conn = arg;
+
+	if (conn == NULL || conn->session_ticket_cb == NULL)
+		return 0;
+
+	wpa_printf(MSG_DEBUG, "OpenSSL: %s: length=%d", __func__, len);
+
+	os_free(conn->session_ticket);
+	conn->session_ticket = NULL;
+
+	wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
+		    "extension", data, len);
+
+	conn->session_ticket = os_malloc(len);
+	if (conn->session_ticket == NULL)
+		return 0;
+
+	os_memcpy(conn->session_ticket, data, len);
+	conn->session_ticket_len = len;
+
+	return 1;
+}
+#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+#ifdef SSL_OP_NO_TICKET
+static void tls_hello_ext_cb(SSL *s, int client_server, int type,
+			     unsigned char *data, int len, void *arg)
+{
+	struct tls_connection *conn = arg;
+
+	if (conn == NULL || conn->session_ticket_cb == NULL)
+		return;
+
+	wpa_printf(MSG_DEBUG, "OpenSSL: %s: type=%d length=%d", __func__,
+		   type, len);
+
+	if (type == TLSEXT_TYPE_session_ticket && !client_server) {
+		os_free(conn->session_ticket);
+		conn->session_ticket = NULL;
+
+		wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
+			    "extension", data, len);
+		conn->session_ticket = os_malloc(len);
+		if (conn->session_ticket == NULL)
+			return;
+
+		os_memcpy(conn->session_ticket, data, len);
+		conn->session_ticket_len = len;
+	}
+}
+#else /* SSL_OP_NO_TICKET */
+static int tls_hello_ext_cb(SSL *s, TLS_EXTENSION *ext, void *arg)
+{
+	struct tls_connection *conn = arg;
+
+	if (conn == NULL || conn->session_ticket_cb == NULL)
+		return 0;
+
+	wpa_printf(MSG_DEBUG, "OpenSSL: %s: type=%d length=%d", __func__,
+		   ext->type, ext->length);
+
+	os_free(conn->session_ticket);
+	conn->session_ticket = NULL;
+
+	if (ext->type == 35) {
+		wpa_hexdump(MSG_DEBUG, "OpenSSL: ClientHello SessionTicket "
+			    "extension", ext->data, ext->length);
+		conn->session_ticket = os_malloc(ext->length);
+		if (conn->session_ticket == NULL)
+			return SSL_AD_INTERNAL_ERROR;
+
+		os_memcpy(conn->session_ticket, ext->data, ext->length);
+		conn->session_ticket_len = ext->length;
+	}
+
+	return 0;
+}
+#endif /* SSL_OP_NO_TICKET */
+#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
+
+
+int tls_connection_set_session_ticket_cb(void *tls_ctx,
+					 struct tls_connection *conn,
+					 tls_session_ticket_cb cb,
+					 void *ctx)
+{
+#if defined(EAP_FAST) || defined(EAP_FAST_DYNAMIC) || defined(EAP_SERVER_FAST)
+	conn->session_ticket_cb = cb;
+	conn->session_ticket_cb_ctx = ctx;
+
+	if (cb) {
+		if (SSL_set_session_secret_cb(conn->ssl, tls_sess_sec_cb,
+					      conn) != 1)
+			return -1;
+#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
+		SSL_set_session_ticket_ext_cb(conn->ssl,
+					      tls_session_ticket_ext_cb, conn);
+#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+#ifdef SSL_OP_NO_TICKET
+		SSL_set_tlsext_debug_callback(conn->ssl, tls_hello_ext_cb);
+		SSL_set_tlsext_debug_arg(conn->ssl, conn);
+#else /* SSL_OP_NO_TICKET */
+		if (SSL_set_hello_extension_cb(conn->ssl, tls_hello_ext_cb,
+					       conn) != 1)
+			return -1;
+#endif /* SSL_OP_NO_TICKET */
+#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+	} else {
+		if (SSL_set_session_secret_cb(conn->ssl, NULL, NULL) != 1)
+			return -1;
+#ifdef CONFIG_OPENSSL_TICKET_OVERRIDE
+		SSL_set_session_ticket_ext_cb(conn->ssl, NULL, NULL);
+#else /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+#ifdef SSL_OP_NO_TICKET
+		SSL_set_tlsext_debug_callback(conn->ssl, NULL);
+		SSL_set_tlsext_debug_arg(conn->ssl, conn);
+#else /* SSL_OP_NO_TICKET */
+		if (SSL_set_hello_extension_cb(conn->ssl, NULL, NULL) != 1)
+			return -1;
+#endif /* SSL_OP_NO_TICKET */
+#endif /* CONFIG_OPENSSL_TICKET_OVERRIDE */
+	}
+
+	return 0;
+#else /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
+	return -1;
+#endif /* EAP_FAST || EAP_FAST_DYNAMIC || EAP_SERVER_FAST */
+}