auto import from //depot/cupcake/@135843
diff --git a/tlsv1_client.c b/tlsv1_client.c
new file mode 100644
index 0000000..2d62ff0
--- /dev/null
+++ b/tlsv1_client.c
@@ -0,0 +1,2609 @@
+/*
+ * wpa_supplicant: TLSv1 client (RFC 2246)
+ * Copyright (c) 2006, 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"
+
+#include "common.h"
+#include "base64.h"
+#include "md5.h"
+#include "sha1.h"
+#include "crypto.h"
+#include "tls.h"
+#include "tlsv1_common.h"
+#include "tlsv1_client.h"
+#include "x509v3.h"
+
+/* TODO:
+ * Support for a message fragmented across several records (RFC 2246, 6.2.1)
+ */
+
+struct tlsv1_client {
+ enum {
+ CLIENT_HELLO, SERVER_HELLO, SERVER_CERTIFICATE,
+ SERVER_KEY_EXCHANGE, SERVER_CERTIFICATE_REQUEST,
+ SERVER_HELLO_DONE, CLIENT_KEY_EXCHANGE, CHANGE_CIPHER_SPEC,
+ SERVER_CHANGE_CIPHER_SPEC, SERVER_FINISHED, ACK_FINISHED,
+ ESTABLISHED, FAILED
+ } state;
+
+ struct tlsv1_record_layer rl;
+
+ u8 session_id[TLS_SESSION_ID_MAX_LEN];
+ size_t session_id_len;
+ u8 client_random[TLS_RANDOM_LEN];
+ u8 server_random[TLS_RANDOM_LEN];
+ u8 master_secret[TLS_MASTER_SECRET_LEN];
+
+ u8 alert_level;
+ u8 alert_description;
+
+ unsigned int certificate_requested:1;
+ unsigned int session_resumed:1;
+ unsigned int ticket:1;
+ unsigned int ticket_key:1;
+
+ struct crypto_public_key *server_rsa_key;
+
+ struct crypto_hash *verify_md5_client;
+ struct crypto_hash *verify_sha1_client;
+ struct crypto_hash *verify_md5_server;
+ struct crypto_hash *verify_sha1_server;
+ struct crypto_hash *verify_md5_cert;
+ struct crypto_hash *verify_sha1_cert;
+
+#define MAX_CIPHER_COUNT 30
+ u16 cipher_suites[MAX_CIPHER_COUNT];
+ size_t num_cipher_suites;
+
+ u16 prev_cipher_suite;
+
+ u8 *client_hello_ext;
+ size_t client_hello_ext_len;
+
+ /* The prime modulus used for Diffie-Hellman */
+ u8 *dh_p;
+ size_t dh_p_len;
+ /* The generator used for Diffie-Hellman */
+ u8 *dh_g;
+ size_t dh_g_len;
+ /* The server's Diffie-Hellman public value */
+ u8 *dh_ys;
+ size_t dh_ys_len;
+
+ struct x509_certificate *trusted_certs;
+ struct x509_certificate *client_cert;
+ struct crypto_private_key *client_key;
+};
+
+
+static int tls_derive_keys(struct tlsv1_client *conn,
+ const u8 *pre_master_secret,
+ size_t pre_master_secret_len);
+static int tls_process_server_key_exchange(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len);
+static int tls_process_certificate_request(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len);
+static int tls_process_server_hello_done(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len);
+
+
+static void tls_alert(struct tlsv1_client *conn, u8 level, u8 description)
+{
+ conn->alert_level = level;
+ conn->alert_description = description;
+}
+
+
+static void tls_verify_hash_add(struct tlsv1_client *conn, const u8 *buf,
+ size_t len)
+{
+ if (conn->verify_md5_client && conn->verify_sha1_client) {
+ crypto_hash_update(conn->verify_md5_client, buf, len);
+ crypto_hash_update(conn->verify_sha1_client, buf, len);
+ }
+ if (conn->verify_md5_server && conn->verify_sha1_server) {
+ crypto_hash_update(conn->verify_md5_server, buf, len);
+ crypto_hash_update(conn->verify_sha1_server, buf, len);
+ }
+ if (conn->verify_md5_cert && conn->verify_sha1_cert) {
+ crypto_hash_update(conn->verify_md5_cert, buf, len);
+ crypto_hash_update(conn->verify_sha1_cert, buf, len);
+ }
+}
+
+
+static u8 * tls_send_alert(struct tlsv1_client *conn,
+ u8 level, u8 description,
+ size_t *out_len)
+{
+ u8 *alert, *pos, *length;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Send Alert(%d:%d)", level, description);
+ *out_len = 0;
+
+ alert = os_malloc(10);
+ if (alert == NULL)
+ return NULL;
+
+ pos = alert;
+
+ /* TLSPlaintext */
+ /* ContentType type */
+ *pos++ = TLS_CONTENT_TYPE_ALERT;
+ /* ProtocolVersion version */
+ WPA_PUT_BE16(pos, TLS_VERSION);
+ pos += 2;
+ /* uint16 length (to be filled) */
+ length = pos;
+ pos += 2;
+ /* opaque fragment[TLSPlaintext.length] */
+
+ /* Alert */
+ /* AlertLevel level */
+ *pos++ = level;
+ /* AlertDescription description */
+ *pos++ = description;
+
+ WPA_PUT_BE16(length, pos - length - 2);
+ *out_len = pos - alert;
+
+ return alert;
+}
+
+
+static u8 * tls_send_client_hello(struct tlsv1_client *conn,
+ size_t *out_len)
+{
+ u8 *hello, *end, *pos, *hs_length, *hs_start, *rhdr;
+ struct os_time now;
+ size_t len, i;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Send ClientHello");
+ *out_len = 0;
+
+ os_get_time(&now);
+ WPA_PUT_BE32(conn->client_random, now.sec);
+ if (os_get_random(conn->client_random + 4, TLS_RANDOM_LEN - 4)) {
+ wpa_printf(MSG_ERROR, "TLSv1: Could not generate "
+ "client_random");
+ return NULL;
+ }
+ wpa_hexdump(MSG_MSGDUMP, "TLSv1: client_random",
+ conn->client_random, TLS_RANDOM_LEN);
+
+ len = 100 + conn->num_cipher_suites * 2 + conn->client_hello_ext_len;
+ hello = os_malloc(len);
+ if (hello == NULL)
+ return NULL;
+ end = hello + len;
+
+ rhdr = hello;
+ pos = rhdr + TLS_RECORD_HEADER_LEN;
+
+ /* opaque fragment[TLSPlaintext.length] */
+
+ /* Handshake */
+ hs_start = pos;
+ /* HandshakeType msg_type */
+ *pos++ = TLS_HANDSHAKE_TYPE_CLIENT_HELLO;
+ /* uint24 length (to be filled) */
+ hs_length = pos;
+ pos += 3;
+ /* body - ClientHello */
+ /* ProtocolVersion client_version */
+ WPA_PUT_BE16(pos, TLS_VERSION);
+ pos += 2;
+ /* Random random: uint32 gmt_unix_time, opaque random_bytes */
+ os_memcpy(pos, conn->client_random, TLS_RANDOM_LEN);
+ pos += TLS_RANDOM_LEN;
+ /* SessionID session_id */
+ *pos++ = conn->session_id_len;
+ os_memcpy(pos, conn->session_id, conn->session_id_len);
+ pos += conn->session_id_len;
+ /* CipherSuite cipher_suites<2..2^16-1> */
+ WPA_PUT_BE16(pos, 2 * conn->num_cipher_suites);
+ pos += 2;
+ for (i = 0; i < conn->num_cipher_suites; i++) {
+ WPA_PUT_BE16(pos, conn->cipher_suites[i]);
+ pos += 2;
+ }
+ /* CompressionMethod compression_methods<1..2^8-1> */
+ *pos++ = 1;
+ *pos++ = TLS_COMPRESSION_NULL;
+
+ if (conn->client_hello_ext) {
+ os_memcpy(pos, conn->client_hello_ext,
+ conn->client_hello_ext_len);
+ pos += conn->client_hello_ext_len;
+ }
+
+ WPA_PUT_BE24(hs_length, pos - hs_length - 3);
+ tls_verify_hash_add(conn, hs_start, pos - hs_start);
+
+ if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_HANDSHAKE,
+ rhdr, end - rhdr, pos - hs_start, out_len) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to create TLS record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ os_free(hello);
+ return NULL;
+ }
+
+ conn->state = SERVER_HELLO;
+
+ return hello;
+}
+
+
+static int tls_process_server_hello(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len)
+{
+ const u8 *pos, *end;
+ size_t left, len, i;
+ u16 cipher_suite;
+
+ if (ct != TLS_CONTENT_TYPE_HANDSHAKE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected Handshake; "
+ "received content type 0x%x", ct);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ pos = in_data;
+ left = *in_len;
+
+ if (left < 4)
+ goto decode_error;
+
+ /* HandshakeType msg_type */
+ if (*pos != TLS_HANDSHAKE_TYPE_SERVER_HELLO) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Received unexpected handshake "
+ "message %d (expected ServerHello)", *pos);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+ wpa_printf(MSG_DEBUG, "TLSv1: Received ServerHello");
+ pos++;
+ /* uint24 length */
+ len = WPA_GET_BE24(pos);
+ pos += 3;
+ left -= 4;
+
+ if (len > left)
+ goto decode_error;
+
+ /* body - ServerHello */
+
+ wpa_hexdump(MSG_MSGDUMP, "TLSv1: ServerHello", pos, len);
+ end = pos + len;
+
+ /* ProtocolVersion server_version */
+ if (end - pos < 2)
+ goto decode_error;
+ if (WPA_GET_BE16(pos) != TLS_VERSION) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected protocol version in "
+ "ServerHello");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_PROTOCOL_VERSION);
+ return -1;
+ }
+ pos += 2;
+
+ /* Random random */
+ if (end - pos < TLS_RANDOM_LEN)
+ goto decode_error;
+
+ os_memcpy(conn->server_random, pos, TLS_RANDOM_LEN);
+ pos += TLS_RANDOM_LEN;
+ wpa_hexdump(MSG_MSGDUMP, "TLSv1: server_random",
+ conn->server_random, TLS_RANDOM_LEN);
+
+ /* SessionID session_id */
+ if (end - pos < 1)
+ goto decode_error;
+ if (end - pos < 1 + *pos || *pos > TLS_SESSION_ID_MAX_LEN)
+ goto decode_error;
+ if (conn->session_id_len && conn->session_id_len == *pos &&
+ os_memcmp(conn->session_id, pos + 1, conn->session_id_len) == 0) {
+ pos += 1 + conn->session_id_len;
+ wpa_printf(MSG_DEBUG, "TLSv1: Resuming old session");
+ conn->session_resumed = 1;
+ } else {
+ conn->session_id_len = *pos;
+ pos++;
+ os_memcpy(conn->session_id, pos, conn->session_id_len);
+ pos += conn->session_id_len;
+ }
+ wpa_hexdump(MSG_MSGDUMP, "TLSv1: session_id",
+ conn->session_id, conn->session_id_len);
+
+ /* CipherSuite cipher_suite */
+ if (end - pos < 2)
+ goto decode_error;
+ cipher_suite = WPA_GET_BE16(pos);
+ pos += 2;
+ for (i = 0; i < conn->num_cipher_suites; i++) {
+ if (cipher_suite == conn->cipher_suites[i])
+ break;
+ }
+ if (i == conn->num_cipher_suites) {
+ wpa_printf(MSG_INFO, "TLSv1: Server selected unexpected "
+ "cipher suite 0x%04x", cipher_suite);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_ILLEGAL_PARAMETER);
+ return -1;
+ }
+
+ if (conn->session_resumed && cipher_suite != conn->prev_cipher_suite) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Server selected a different "
+ "cipher suite for a resumed connection (0x%04x != "
+ "0x%04x)", cipher_suite, conn->prev_cipher_suite);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_ILLEGAL_PARAMETER);
+ return -1;
+ }
+
+ if (tlsv1_record_set_cipher_suite(&conn->rl, cipher_suite) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to set CipherSuite for "
+ "record layer");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ conn->prev_cipher_suite = cipher_suite;
+
+ if (conn->session_resumed || conn->ticket_key)
+ tls_derive_keys(conn, NULL, 0);
+
+ /* CompressionMethod compression_method */
+ if (end - pos < 1)
+ goto decode_error;
+ if (*pos != TLS_COMPRESSION_NULL) {
+ wpa_printf(MSG_INFO, "TLSv1: Server selected unexpected "
+ "compression 0x%02x", *pos);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_ILLEGAL_PARAMETER);
+ return -1;
+ }
+ pos++;
+
+ if (end != pos) {
+ wpa_hexdump(MSG_DEBUG, "TLSv1: Unexpected extra data in the "
+ "end of ServerHello", pos, end - pos);
+ goto decode_error;
+ }
+
+ *in_len = end - in_data;
+
+ conn->state = (conn->session_resumed || conn->ticket) ?
+ SERVER_CHANGE_CIPHER_SPEC : SERVER_CERTIFICATE;
+
+ return 0;
+
+decode_error:
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to decode ServerHello");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+}
+
+
+static int tls_server_key_exchange_allowed(struct tlsv1_client *conn)
+{
+ const struct tls_cipher_suite *suite;
+
+ /* RFC 2246, Section 7.4.3 */
+ suite = tls_get_cipher_suite(conn->rl.cipher_suite);
+ if (suite == NULL)
+ return 0;
+
+ switch (suite->key_exchange) {
+ case TLS_KEY_X_DHE_DSS:
+ case TLS_KEY_X_DHE_DSS_EXPORT:
+ case TLS_KEY_X_DHE_RSA:
+ case TLS_KEY_X_DHE_RSA_EXPORT:
+ case TLS_KEY_X_DH_anon_EXPORT:
+ case TLS_KEY_X_DH_anon:
+ return 1;
+ case TLS_KEY_X_RSA_EXPORT:
+ return 1 /* FIX: public key len > 512 bits */;
+ default:
+ return 0;
+ }
+}
+
+
+static int tls_process_certificate(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len)
+{
+ const u8 *pos, *end;
+ size_t left, len, list_len, cert_len, idx;
+ u8 type;
+ struct x509_certificate *chain = NULL, *last = NULL, *cert;
+ int reason;
+
+ if (ct != TLS_CONTENT_TYPE_HANDSHAKE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected Handshake; "
+ "received content type 0x%x", ct);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ pos = in_data;
+ left = *in_len;
+
+ if (left < 4) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short Certificate message "
+ "(len=%lu)", (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ type = *pos++;
+ len = WPA_GET_BE24(pos);
+ pos += 3;
+ left -= 4;
+
+ if (len > left) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected Certificate message "
+ "length (len=%lu != left=%lu)",
+ (unsigned long) len, (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ if (type == TLS_HANDSHAKE_TYPE_SERVER_KEY_EXCHANGE)
+ return tls_process_server_key_exchange(conn, ct, in_data,
+ in_len);
+ if (type == TLS_HANDSHAKE_TYPE_CERTIFICATE_REQUEST)
+ return tls_process_certificate_request(conn, ct, in_data,
+ in_len);
+ if (type == TLS_HANDSHAKE_TYPE_SERVER_HELLO_DONE)
+ return tls_process_server_hello_done(conn, ct, in_data,
+ in_len);
+ if (type != TLS_HANDSHAKE_TYPE_CERTIFICATE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Received unexpected handshake "
+ "message %d (expected Certificate/"
+ "ServerKeyExchange/CertificateRequest/"
+ "ServerHelloDone)", type);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG,
+ "TLSv1: Received Certificate (certificate_list len %lu)",
+ (unsigned long) len);
+
+ /*
+ * opaque ASN.1Cert<2^24-1>;
+ *
+ * struct {
+ * ASN.1Cert certificate_list<1..2^24-1>;
+ * } Certificate;
+ */
+
+ end = pos + len;
+
+ if (end - pos < 3) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short Certificate "
+ "(left=%lu)", (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ list_len = WPA_GET_BE24(pos);
+ pos += 3;
+
+ if ((size_t) (end - pos) != list_len) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected certificate_list "
+ "length (len=%lu left=%lu)",
+ (unsigned long) list_len,
+ (unsigned long) (end - pos));
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ idx = 0;
+ while (pos < end) {
+ if (end - pos < 3) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to parse "
+ "certificate_list");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECODE_ERROR);
+ x509_certificate_chain_free(chain);
+ return -1;
+ }
+
+ cert_len = WPA_GET_BE24(pos);
+ pos += 3;
+
+ if ((size_t) (end - pos) < cert_len) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected certificate "
+ "length (len=%lu left=%lu)",
+ (unsigned long) cert_len,
+ (unsigned long) (end - pos));
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECODE_ERROR);
+ x509_certificate_chain_free(chain);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Certificate %lu (len %lu)",
+ (unsigned long) idx, (unsigned long) cert_len);
+
+ if (idx == 0) {
+ crypto_public_key_free(conn->server_rsa_key);
+ if (tls_parse_cert(pos, cert_len,
+ &conn->server_rsa_key)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to parse "
+ "the certificate");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_BAD_CERTIFICATE);
+ x509_certificate_chain_free(chain);
+ return -1;
+ }
+ }
+
+ cert = x509_certificate_parse(pos, cert_len);
+ if (cert == NULL) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to parse "
+ "the certificate");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_BAD_CERTIFICATE);
+ x509_certificate_chain_free(chain);
+ return -1;
+ }
+
+ if (last == NULL)
+ chain = cert;
+ else
+ last->next = cert;
+ last = cert;
+
+ idx++;
+ pos += cert_len;
+ }
+
+ if (x509_certificate_chain_validate(conn->trusted_certs, chain,
+ &reason) < 0) {
+ int tls_reason;
+ wpa_printf(MSG_DEBUG, "TLSv1: Server certificate chain "
+ "validation failed (reason=%d)", reason);
+ switch (reason) {
+ case X509_VALIDATE_BAD_CERTIFICATE:
+ tls_reason = TLS_ALERT_BAD_CERTIFICATE;
+ break;
+ case X509_VALIDATE_UNSUPPORTED_CERTIFICATE:
+ tls_reason = TLS_ALERT_UNSUPPORTED_CERTIFICATE;
+ break;
+ case X509_VALIDATE_CERTIFICATE_REVOKED:
+ tls_reason = TLS_ALERT_CERTIFICATE_REVOKED;
+ break;
+ case X509_VALIDATE_CERTIFICATE_EXPIRED:
+ tls_reason = TLS_ALERT_CERTIFICATE_EXPIRED;
+ break;
+ case X509_VALIDATE_CERTIFICATE_UNKNOWN:
+ tls_reason = TLS_ALERT_CERTIFICATE_UNKNOWN;
+ break;
+ case X509_VALIDATE_UNKNOWN_CA:
+ tls_reason = TLS_ALERT_UNKNOWN_CA;
+ break;
+ default:
+ tls_reason = TLS_ALERT_BAD_CERTIFICATE;
+ break;
+ }
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, tls_reason);
+ x509_certificate_chain_free(chain);
+ return -1;
+ }
+
+ x509_certificate_chain_free(chain);
+
+ *in_len = end - in_data;
+
+ conn->state = SERVER_KEY_EXCHANGE;
+
+ return 0;
+}
+
+
+static void tlsv1_client_free_dh(struct tlsv1_client *conn)
+{
+ os_free(conn->dh_p);
+ os_free(conn->dh_g);
+ os_free(conn->dh_ys);
+ conn->dh_p = conn->dh_g = conn->dh_ys = NULL;
+}
+
+
+static int tlsv1_process_diffie_hellman(struct tlsv1_client *conn,
+ const u8 *buf, size_t len)
+{
+ const u8 *pos, *end;
+
+ tlsv1_client_free_dh(conn);
+
+ pos = buf;
+ end = buf + len;
+
+ if (end - pos < 3)
+ goto fail;
+ conn->dh_p_len = WPA_GET_BE16(pos);
+ pos += 2;
+ if (conn->dh_p_len == 0 || end - pos < (int) conn->dh_p_len)
+ goto fail;
+ conn->dh_p = os_malloc(conn->dh_p_len);
+ if (conn->dh_p == NULL)
+ goto fail;
+ os_memcpy(conn->dh_p, pos, conn->dh_p_len);
+ pos += conn->dh_p_len;
+ wpa_hexdump(MSG_DEBUG, "TLSv1: DH p (prime)",
+ conn->dh_p, conn->dh_p_len);
+
+ if (end - pos < 3)
+ goto fail;
+ conn->dh_g_len = WPA_GET_BE16(pos);
+ pos += 2;
+ if (conn->dh_g_len == 0 || end - pos < (int) conn->dh_g_len)
+ goto fail;
+ conn->dh_g = os_malloc(conn->dh_g_len);
+ if (conn->dh_g == NULL)
+ goto fail;
+ os_memcpy(conn->dh_g, pos, conn->dh_g_len);
+ pos += conn->dh_g_len;
+ wpa_hexdump(MSG_DEBUG, "TLSv1: DH g (generator)",
+ conn->dh_g, conn->dh_g_len);
+ if (conn->dh_g_len == 1 && conn->dh_g[0] < 2)
+ goto fail;
+
+ if (end - pos < 3)
+ goto fail;
+ conn->dh_ys_len = WPA_GET_BE16(pos);
+ pos += 2;
+ if (conn->dh_ys_len == 0 || end - pos < (int) conn->dh_ys_len)
+ goto fail;
+ conn->dh_ys = os_malloc(conn->dh_ys_len);
+ if (conn->dh_ys == NULL)
+ goto fail;
+ os_memcpy(conn->dh_ys, pos, conn->dh_ys_len);
+ pos += conn->dh_ys_len;
+ wpa_hexdump(MSG_DEBUG, "TLSv1: DH Ys (server's public value)",
+ conn->dh_ys, conn->dh_ys_len);
+
+ return 0;
+
+fail:
+ tlsv1_client_free_dh(conn);
+ return -1;
+}
+
+
+static int tls_process_server_key_exchange(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len)
+{
+ const u8 *pos, *end;
+ size_t left, len;
+ u8 type;
+ const struct tls_cipher_suite *suite;
+
+ if (ct != TLS_CONTENT_TYPE_HANDSHAKE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected Handshake; "
+ "received content type 0x%x", ct);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ pos = in_data;
+ left = *in_len;
+
+ if (left < 4) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short ServerKeyExchange "
+ "(Left=%lu)", (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ type = *pos++;
+ len = WPA_GET_BE24(pos);
+ pos += 3;
+ left -= 4;
+
+ if (len > left) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Mismatch in ServerKeyExchange "
+ "length (len=%lu != left=%lu)",
+ (unsigned long) len, (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ end = pos + len;
+
+ if (type == TLS_HANDSHAKE_TYPE_CERTIFICATE_REQUEST)
+ return tls_process_certificate_request(conn, ct, in_data,
+ in_len);
+ if (type == TLS_HANDSHAKE_TYPE_SERVER_HELLO_DONE)
+ return tls_process_server_hello_done(conn, ct, in_data,
+ in_len);
+ if (type != TLS_HANDSHAKE_TYPE_SERVER_KEY_EXCHANGE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Received unexpected handshake "
+ "message %d (expected ServerKeyExchange/"
+ "CertificateRequest/ServerHelloDone)", type);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Received ServerKeyExchange");
+
+ if (!tls_server_key_exchange_allowed(conn)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: ServerKeyExchange not allowed "
+ "with the selected cipher suite");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ wpa_hexdump(MSG_DEBUG, "TLSv1: ServerKeyExchange", pos, len);
+ suite = tls_get_cipher_suite(conn->rl.cipher_suite);
+ if (suite && suite->key_exchange == TLS_KEY_X_DH_anon) {
+ if (tlsv1_process_diffie_hellman(conn, pos, len) < 0) {
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+ } else {
+ wpa_printf(MSG_DEBUG, "TLSv1: UnexpectedServerKeyExchange");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ *in_len = end - in_data;
+
+ conn->state = SERVER_CERTIFICATE_REQUEST;
+
+ return 0;
+}
+
+
+static int tls_process_certificate_request(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len)
+{
+ const u8 *pos, *end;
+ size_t left, len;
+ u8 type;
+
+ if (ct != TLS_CONTENT_TYPE_HANDSHAKE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected Handshake; "
+ "received content type 0x%x", ct);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ pos = in_data;
+ left = *in_len;
+
+ if (left < 4) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short CertificateRequest "
+ "(left=%lu)", (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ type = *pos++;
+ len = WPA_GET_BE24(pos);
+ pos += 3;
+ left -= 4;
+
+ if (len > left) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Mismatch in CertificateRequest "
+ "length (len=%lu != left=%lu)",
+ (unsigned long) len, (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ end = pos + len;
+
+ if (type == TLS_HANDSHAKE_TYPE_SERVER_HELLO_DONE)
+ return tls_process_server_hello_done(conn, ct, in_data,
+ in_len);
+ if (type != TLS_HANDSHAKE_TYPE_CERTIFICATE_REQUEST) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Received unexpected handshake "
+ "message %d (expected CertificateRequest/"
+ "ServerHelloDone)", type);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Received CertificateRequest");
+
+ conn->certificate_requested = 1;
+
+ *in_len = end - in_data;
+
+ conn->state = SERVER_HELLO_DONE;
+
+ return 0;
+}
+
+
+static int tls_process_server_hello_done(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len)
+{
+ const u8 *pos, *end;
+ size_t left, len;
+ u8 type;
+
+ if (ct != TLS_CONTENT_TYPE_HANDSHAKE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected Handshake; "
+ "received content type 0x%x", ct);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ pos = in_data;
+ left = *in_len;
+
+ if (left < 4) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short ServerHelloDone "
+ "(left=%lu)", (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ type = *pos++;
+ len = WPA_GET_BE24(pos);
+ pos += 3;
+ left -= 4;
+
+ if (len > left) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Mismatch in ServerHelloDone "
+ "length (len=%lu != left=%lu)",
+ (unsigned long) len, (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+ end = pos + len;
+
+ if (type != TLS_HANDSHAKE_TYPE_SERVER_HELLO_DONE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Received unexpected handshake "
+ "message %d (expected ServerHelloDone)", type);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Received ServerHelloDone");
+
+ *in_len = end - in_data;
+
+ conn->state = CLIENT_KEY_EXCHANGE;
+
+ return 0;
+}
+
+
+static int tls_process_server_change_cipher_spec(struct tlsv1_client *conn,
+ u8 ct, const u8 *in_data,
+ size_t *in_len)
+{
+ const u8 *pos;
+ size_t left;
+
+ if (ct != TLS_CONTENT_TYPE_CHANGE_CIPHER_SPEC) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected ChangeCipherSpec; "
+ "received content type 0x%x", ct);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ pos = in_data;
+ left = *in_len;
+
+ if (left < 1) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short ChangeCipherSpec");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ if (*pos != TLS_CHANGE_CIPHER_SPEC) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected ChangeCipherSpec; "
+ "received data 0x%x", *pos);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Received ChangeCipherSpec");
+ if (tlsv1_record_change_read_cipher(&conn->rl) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to change read cipher "
+ "for record layer");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ *in_len = pos + 1 - in_data;
+
+ conn->state = SERVER_FINISHED;
+
+ return 0;
+}
+
+
+static int tls_process_server_finished(struct tlsv1_client *conn, u8 ct,
+ const u8 *in_data, size_t *in_len)
+{
+ const u8 *pos, *end;
+ size_t left, len, hlen;
+ u8 verify_data[TLS_VERIFY_DATA_LEN];
+ u8 hash[MD5_MAC_LEN + SHA1_MAC_LEN];
+
+ if (ct != TLS_CONTENT_TYPE_HANDSHAKE) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected Finished; "
+ "received content type 0x%x", ct);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ pos = in_data;
+ left = *in_len;
+
+ if (left < 4) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short record (left=%lu) for "
+ "Finished",
+ (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+
+ if (pos[0] != TLS_HANDSHAKE_TYPE_FINISHED) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Expected Finished; received "
+ "type 0x%x", pos[0]);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ len = WPA_GET_BE24(pos + 1);
+
+ pos += 4;
+ left -= 4;
+
+ if (len > left) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Too short buffer for Finished "
+ "(len=%lu > left=%lu)",
+ (unsigned long) len, (unsigned long) left);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+ end = pos + len;
+ if (len != TLS_VERIFY_DATA_LEN) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected verify_data length "
+ "in Finished: %lu (expected %d)",
+ (unsigned long) len, TLS_VERIFY_DATA_LEN);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+ wpa_hexdump(MSG_MSGDUMP, "TLSv1: verify_data in Finished",
+ pos, TLS_VERIFY_DATA_LEN);
+
+ hlen = MD5_MAC_LEN;
+ if (conn->verify_md5_server == NULL ||
+ crypto_hash_finish(conn->verify_md5_server, hash, &hlen) < 0) {
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ conn->verify_md5_server = NULL;
+ crypto_hash_finish(conn->verify_sha1_server, NULL, NULL);
+ conn->verify_sha1_server = NULL;
+ return -1;
+ }
+ conn->verify_md5_server = NULL;
+ hlen = SHA1_MAC_LEN;
+ if (conn->verify_sha1_server == NULL ||
+ crypto_hash_finish(conn->verify_sha1_server, hash + MD5_MAC_LEN,
+ &hlen) < 0) {
+ conn->verify_sha1_server = NULL;
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ conn->verify_sha1_server = NULL;
+
+ if (tls_prf(conn->master_secret, TLS_MASTER_SECRET_LEN,
+ "server finished", hash, MD5_MAC_LEN + SHA1_MAC_LEN,
+ verify_data, TLS_VERIFY_DATA_LEN)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive verify_data");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECRYPT_ERROR);
+ return -1;
+ }
+ wpa_hexdump_key(MSG_DEBUG, "TLSv1: verify_data (server)",
+ verify_data, TLS_VERIFY_DATA_LEN);
+
+ if (os_memcmp(pos, verify_data, TLS_VERIFY_DATA_LEN) != 0) {
+ wpa_printf(MSG_INFO, "TLSv1: Mismatch in verify_data");
+ return -1;
+ }
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Received Finished");
+
+ *in_len = end - in_data;
+
+ conn->state = (conn->session_resumed || conn->ticket) ?
+ CHANGE_CIPHER_SPEC : ACK_FINISHED;
+
+ return 0;
+}
+
+
+static int tls_derive_pre_master_secret(u8 *pre_master_secret)
+{
+ WPA_PUT_BE16(pre_master_secret, TLS_VERSION);
+ if (os_get_random(pre_master_secret + 2,
+ TLS_PRE_MASTER_SECRET_LEN - 2))
+ return -1;
+ return 0;
+}
+
+
+static int tls_derive_keys(struct tlsv1_client *conn,
+ const u8 *pre_master_secret,
+ size_t pre_master_secret_len)
+{
+ u8 seed[2 * TLS_RANDOM_LEN];
+ u8 key_block[TLS_MAX_KEY_BLOCK_LEN];
+ u8 *pos;
+ size_t key_block_len;
+
+ if (pre_master_secret) {
+ wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: pre_master_secret",
+ pre_master_secret, pre_master_secret_len);
+ os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN);
+ os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random,
+ TLS_RANDOM_LEN);
+ if (tls_prf(pre_master_secret, pre_master_secret_len,
+ "master secret", seed, 2 * TLS_RANDOM_LEN,
+ conn->master_secret, TLS_MASTER_SECRET_LEN)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive "
+ "master_secret");
+ return -1;
+ }
+ wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: master_secret",
+ conn->master_secret, TLS_MASTER_SECRET_LEN);
+ }
+
+ os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN);
+ os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random, TLS_RANDOM_LEN);
+ key_block_len = 2 * (conn->rl.hash_size + conn->rl.key_material_len +
+ conn->rl.iv_size);
+ if (tls_prf(conn->master_secret, TLS_MASTER_SECRET_LEN,
+ "key expansion", seed, 2 * TLS_RANDOM_LEN,
+ key_block, key_block_len)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive key_block");
+ return -1;
+ }
+ wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: key_block",
+ key_block, key_block_len);
+
+ pos = key_block;
+
+ /* client_write_MAC_secret */
+ os_memcpy(conn->rl.write_mac_secret, pos, conn->rl.hash_size);
+ pos += conn->rl.hash_size;
+ /* server_write_MAC_secret */
+ os_memcpy(conn->rl.read_mac_secret, pos, conn->rl.hash_size);
+ pos += conn->rl.hash_size;
+
+ /* client_write_key */
+ os_memcpy(conn->rl.write_key, pos, conn->rl.key_material_len);
+ pos += conn->rl.key_material_len;
+ /* server_write_key */
+ os_memcpy(conn->rl.read_key, pos, conn->rl.key_material_len);
+ pos += conn->rl.key_material_len;
+
+ /* client_write_IV */
+ os_memcpy(conn->rl.write_iv, pos, conn->rl.iv_size);
+ pos += conn->rl.iv_size;
+ /* server_write_IV */
+ os_memcpy(conn->rl.read_iv, pos, conn->rl.iv_size);
+ pos += conn->rl.iv_size;
+
+ return 0;
+}
+
+
+static int tls_write_client_certificate(struct tlsv1_client *conn,
+ u8 **msgpos, u8 *end)
+{
+ u8 *pos, *rhdr, *hs_start, *hs_length, *cert_start;
+ size_t rlen;
+ struct x509_certificate *cert;
+
+ pos = *msgpos;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Send Certificate");
+ rhdr = pos;
+ pos += TLS_RECORD_HEADER_LEN;
+
+ /* opaque fragment[TLSPlaintext.length] */
+
+ /* Handshake */
+ hs_start = pos;
+ /* HandshakeType msg_type */
+ *pos++ = TLS_HANDSHAKE_TYPE_CERTIFICATE;
+ /* uint24 length (to be filled) */
+ hs_length = pos;
+ pos += 3;
+ /* body - Certificate */
+ /* uint24 length (to be filled) */
+ cert_start = pos;
+ pos += 3;
+ cert = conn->client_cert;
+ while (cert) {
+ if (pos + 3 + cert->cert_len > end) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Not enough buffer space "
+ "for Certificate (cert_len=%lu left=%lu)",
+ (unsigned long) cert->cert_len,
+ (unsigned long) (end - pos));
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ WPA_PUT_BE24(pos, cert->cert_len);
+ pos += 3;
+ os_memcpy(pos, cert->cert_start, cert->cert_len);
+ pos += cert->cert_len;
+
+ if (x509_certificate_self_signed(cert))
+ break;
+ cert = x509_certificate_get_subject(conn->trusted_certs,
+ &cert->issuer);
+ }
+ if (cert == conn->client_cert || cert == NULL) {
+ /*
+ * Client was not configured with all the needed certificates
+ * to form a full certificate chain. The server may fail to
+ * validate the chain unless it is configured with all the
+ * missing CA certificates.
+ */
+ wpa_printf(MSG_DEBUG, "TLSv1: Full client certificate chain "
+ "not configured - validation may fail");
+ }
+ WPA_PUT_BE24(cert_start, pos - cert_start - 3);
+
+ WPA_PUT_BE24(hs_length, pos - hs_length - 3);
+
+ if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_HANDSHAKE,
+ rhdr, end - rhdr, pos - hs_start, &rlen) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to generate a record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ pos = rhdr + rlen;
+
+ tls_verify_hash_add(conn, hs_start, pos - hs_start);
+
+ *msgpos = pos;
+
+ return 0;
+}
+
+
+static int tlsv1_key_x_anon_dh(struct tlsv1_client *conn, u8 **pos, u8 *end)
+{
+#ifdef EAP_FAST
+ /* ClientDiffieHellmanPublic */
+ u8 *csecret, *csecret_start, *dh_yc, *shared;
+ size_t csecret_len, dh_yc_len, shared_len;
+
+ csecret_len = conn->dh_p_len;
+ csecret = os_malloc(csecret_len);
+ if (csecret == NULL) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to allocate "
+ "memory for Yc (Diffie-Hellman)");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ if (os_get_random(csecret, csecret_len)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to get random "
+ "data for Diffie-Hellman");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ os_free(csecret);
+ return -1;
+ }
+
+ if (os_memcmp(csecret, conn->dh_p, csecret_len) > 0)
+ csecret[0] = 0; /* make sure Yc < p */
+
+ csecret_start = csecret;
+ while (csecret_len > 1 && *csecret_start == 0) {
+ csecret_start++;
+ csecret_len--;
+ }
+ wpa_hexdump_key(MSG_DEBUG, "TLSv1: DH client's secret value",
+ csecret_start, csecret_len);
+
+ /* Yc = g^csecret mod p */
+ dh_yc_len = conn->dh_p_len;
+ dh_yc = os_malloc(dh_yc_len);
+ if (dh_yc == NULL) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to allocate "
+ "memory for Diffie-Hellman");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ os_free(csecret);
+ return -1;
+ }
+ crypto_mod_exp(conn->dh_g, conn->dh_g_len,
+ csecret_start, csecret_len,
+ conn->dh_p, conn->dh_p_len,
+ dh_yc, &dh_yc_len);
+
+ wpa_hexdump(MSG_DEBUG, "TLSv1: DH Yc (client's public value)",
+ dh_yc, dh_yc_len);
+
+ WPA_PUT_BE16(*pos, dh_yc_len);
+ *pos += 2;
+ if (*pos + dh_yc_len > end) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Not enough room in the "
+ "message buffer for Yc");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ os_free(csecret);
+ os_free(dh_yc);
+ return -1;
+ }
+ os_memcpy(*pos, dh_yc, dh_yc_len);
+ *pos += dh_yc_len;
+ os_free(dh_yc);
+
+ shared_len = conn->dh_p_len;
+ shared = os_malloc(shared_len);
+ if (shared == NULL) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Could not allocate memory for "
+ "DH");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ os_free(csecret);
+ return -1;
+ }
+
+ /* shared = Ys^csecret mod p */
+ crypto_mod_exp(conn->dh_ys, conn->dh_ys_len,
+ csecret_start, csecret_len,
+ conn->dh_p, conn->dh_p_len,
+ shared, &shared_len);
+ wpa_hexdump_key(MSG_DEBUG, "TLSv1: Shared secret from DH key exchange",
+ shared, shared_len);
+
+ os_memset(csecret_start, 0, csecret_len);
+ os_free(csecret);
+ if (tls_derive_keys(conn, shared, shared_len)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive keys");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ os_free(shared);
+ return -1;
+ }
+ os_memset(shared, 0, shared_len);
+ os_free(shared);
+ tlsv1_client_free_dh(conn);
+ return 0;
+#else /* EAP_FAST */
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+#endif /* EAP_FAST */
+}
+
+
+static int tlsv1_key_x_rsa(struct tlsv1_client *conn, u8 **pos, u8 *end)
+{
+ u8 pre_master_secret[TLS_PRE_MASTER_SECRET_LEN];
+ size_t clen;
+ int res;
+
+ if (tls_derive_pre_master_secret(pre_master_secret) < 0 ||
+ tls_derive_keys(conn, pre_master_secret,
+ TLS_PRE_MASTER_SECRET_LEN)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive keys");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ /* EncryptedPreMasterSecret */
+ if (conn->server_rsa_key == NULL) {
+ wpa_printf(MSG_DEBUG, "TLSv1: No server RSA key to "
+ "use for encrypting pre-master secret");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ /* RSA encrypted value is encoded with PKCS #1 v1.5 block type 2. */
+ *pos += 2;
+ clen = end - *pos;
+ res = crypto_public_key_encrypt_pkcs1_v15(
+ conn->server_rsa_key,
+ pre_master_secret, TLS_PRE_MASTER_SECRET_LEN,
+ *pos, &clen);
+ os_memset(pre_master_secret, 0, TLS_PRE_MASTER_SECRET_LEN);
+ if (res < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: RSA encryption failed");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ WPA_PUT_BE16(*pos - 2, clen);
+ wpa_hexdump(MSG_MSGDUMP, "TLSv1: Encrypted pre_master_secret",
+ *pos, clen);
+ *pos += clen;
+
+ return 0;
+}
+
+
+static int tls_write_client_key_exchange(struct tlsv1_client *conn,
+ u8 **msgpos, u8 *end)
+{
+ u8 *pos, *rhdr, *hs_start, *hs_length;
+ size_t rlen;
+ tls_key_exchange keyx;
+ const struct tls_cipher_suite *suite;
+
+ suite = tls_get_cipher_suite(conn->rl.cipher_suite);
+ if (suite == NULL)
+ keyx = TLS_KEY_X_NULL;
+ else
+ keyx = suite->key_exchange;
+
+ pos = *msgpos;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Send ClientKeyExchange");
+
+ rhdr = pos;
+ pos += TLS_RECORD_HEADER_LEN;
+
+ /* opaque fragment[TLSPlaintext.length] */
+
+ /* Handshake */
+ hs_start = pos;
+ /* HandshakeType msg_type */
+ *pos++ = TLS_HANDSHAKE_TYPE_CLIENT_KEY_EXCHANGE;
+ /* uint24 length (to be filled) */
+ hs_length = pos;
+ pos += 3;
+ /* body - ClientKeyExchange */
+ if (keyx == TLS_KEY_X_DH_anon) {
+ if (tlsv1_key_x_anon_dh(conn, &pos, end) < 0)
+ return -1;
+ } else {
+ if (tlsv1_key_x_rsa(conn, &pos, end) < 0)
+ return -1;
+ }
+
+ WPA_PUT_BE24(hs_length, pos - hs_length - 3);
+
+ if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_HANDSHAKE,
+ rhdr, end - rhdr, pos - hs_start, &rlen) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ pos = rhdr + rlen;
+ tls_verify_hash_add(conn, hs_start, pos - hs_start);
+
+ *msgpos = pos;
+
+ return 0;
+}
+
+
+static int tls_write_client_certificate_verify(struct tlsv1_client *conn,
+ u8 **msgpos, u8 *end)
+{
+ u8 *pos, *rhdr, *hs_start, *hs_length, *signed_start;
+ size_t rlen, hlen, clen;
+ u8 hash[MD5_MAC_LEN + SHA1_MAC_LEN], *hpos;
+ enum { SIGN_ALG_RSA, SIGN_ALG_DSA } alg = SIGN_ALG_RSA;
+
+ pos = *msgpos;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Send CertificateVerify");
+ rhdr = pos;
+ pos += TLS_RECORD_HEADER_LEN;
+
+ /* Handshake */
+ hs_start = pos;
+ /* HandshakeType msg_type */
+ *pos++ = TLS_HANDSHAKE_TYPE_CERTIFICATE_VERIFY;
+ /* uint24 length (to be filled) */
+ hs_length = pos;
+ pos += 3;
+
+ /*
+ * RFC 2246: 7.4.3 and 7.4.8:
+ * Signature signature
+ *
+ * RSA:
+ * digitally-signed struct {
+ * opaque md5_hash[16];
+ * opaque sha_hash[20];
+ * };
+ *
+ * DSA:
+ * digitally-signed struct {
+ * opaque sha_hash[20];
+ * };
+ *
+ * The hash values are calculated over all handshake messages sent or
+ * received starting at ClientHello up to, but not including, this
+ * CertificateVerify message, including the type and length fields of
+ * the handshake messages.
+ */
+
+ hpos = hash;
+
+ if (alg == SIGN_ALG_RSA) {
+ hlen = MD5_MAC_LEN;
+ if (conn->verify_md5_cert == NULL ||
+ crypto_hash_finish(conn->verify_md5_cert, hpos, &hlen) < 0)
+ {
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ conn->verify_md5_cert = NULL;
+ crypto_hash_finish(conn->verify_sha1_cert, NULL, NULL);
+ conn->verify_sha1_cert = NULL;
+ return -1;
+ }
+ hpos += MD5_MAC_LEN;
+ } else
+ crypto_hash_finish(conn->verify_md5_cert, NULL, NULL);
+
+ conn->verify_md5_cert = NULL;
+ hlen = SHA1_MAC_LEN;
+ if (conn->verify_sha1_cert == NULL ||
+ crypto_hash_finish(conn->verify_sha1_cert, hpos, &hlen) < 0) {
+ conn->verify_sha1_cert = NULL;
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ conn->verify_sha1_cert = NULL;
+
+ if (alg == SIGN_ALG_RSA)
+ hlen += MD5_MAC_LEN;
+
+ wpa_hexdump(MSG_MSGDUMP, "TLSv1: CertificateVerify hash", hash, hlen);
+
+ /*
+ * RFC 2246, 4.7:
+ * In digital signing, one-way hash functions are used as input for a
+ * signing algorithm. A digitally-signed element is encoded as an
+ * opaque vector <0..2^16-1>, where the length is specified by the
+ * signing algorithm and key.
+ *
+ * In RSA signing, a 36-byte structure of two hashes (one SHA and one
+ * MD5) is signed (encrypted with the private key). It is encoded with
+ * PKCS #1 block type 0 or type 1 as described in [PKCS1].
+ */
+ signed_start = pos; /* length to be filled */
+ pos += 2;
+ clen = end - pos;
+ if (crypto_private_key_sign_pkcs1(conn->client_key, hash, hlen,
+ pos, &clen) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to sign hash (PKCS #1)");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ WPA_PUT_BE16(signed_start, clen);
+
+ pos += clen;
+
+ WPA_PUT_BE24(hs_length, pos - hs_length - 3);
+
+ if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_HANDSHAKE,
+ rhdr, end - rhdr, pos - hs_start, &rlen) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to generate a record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ pos = rhdr + rlen;
+
+ tls_verify_hash_add(conn, hs_start, pos - hs_start);
+
+ *msgpos = pos;
+
+ return 0;
+}
+
+
+static int tls_write_client_change_cipher_spec(struct tlsv1_client *conn,
+ u8 **msgpos, u8 *end)
+{
+ u8 *pos, *rhdr;
+ size_t rlen;
+
+ pos = *msgpos;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Send ChangeCipherSpec");
+ rhdr = pos;
+ pos += TLS_RECORD_HEADER_LEN;
+ *pos = TLS_CHANGE_CIPHER_SPEC;
+ if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_CHANGE_CIPHER_SPEC,
+ rhdr, end - rhdr, 1, &rlen) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ if (tlsv1_record_change_write_cipher(&conn->rl) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to set write cipher for "
+ "record layer");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ *msgpos = rhdr + rlen;
+
+ return 0;
+}
+
+
+static int tls_write_client_finished(struct tlsv1_client *conn,
+ u8 **msgpos, u8 *end)
+{
+ u8 *pos, *rhdr, *hs_start, *hs_length;
+ size_t rlen, hlen;
+ u8 verify_data[TLS_VERIFY_DATA_LEN];
+ u8 hash[MD5_MAC_LEN + SHA1_MAC_LEN];
+
+ pos = *msgpos;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Send Finished");
+
+ /* Encrypted Handshake Message: Finished */
+
+ hlen = MD5_MAC_LEN;
+ if (conn->verify_md5_client == NULL ||
+ crypto_hash_finish(conn->verify_md5_client, hash, &hlen) < 0) {
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ conn->verify_md5_client = NULL;
+ crypto_hash_finish(conn->verify_sha1_client, NULL, NULL);
+ conn->verify_sha1_client = NULL;
+ return -1;
+ }
+ conn->verify_md5_client = NULL;
+ hlen = SHA1_MAC_LEN;
+ if (conn->verify_sha1_client == NULL ||
+ crypto_hash_finish(conn->verify_sha1_client, hash + MD5_MAC_LEN,
+ &hlen) < 0) {
+ conn->verify_sha1_client = NULL;
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ conn->verify_sha1_client = NULL;
+
+ if (tls_prf(conn->master_secret, TLS_MASTER_SECRET_LEN,
+ "client finished", hash, MD5_MAC_LEN + SHA1_MAC_LEN,
+ verify_data, TLS_VERIFY_DATA_LEN)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to generate verify_data");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+ wpa_hexdump_key(MSG_DEBUG, "TLSv1: verify_data (client)",
+ verify_data, TLS_VERIFY_DATA_LEN);
+
+ rhdr = pos;
+ pos += TLS_RECORD_HEADER_LEN;
+ /* Handshake */
+ hs_start = pos;
+ /* HandshakeType msg_type */
+ *pos++ = TLS_HANDSHAKE_TYPE_FINISHED;
+ /* uint24 length (to be filled) */
+ hs_length = pos;
+ pos += 3;
+ os_memcpy(pos, verify_data, TLS_VERIFY_DATA_LEN);
+ pos += TLS_VERIFY_DATA_LEN;
+ WPA_PUT_BE24(hs_length, pos - hs_length - 3);
+ tls_verify_hash_add(conn, hs_start, pos - hs_start);
+
+ if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_HANDSHAKE,
+ rhdr, end - rhdr, pos - hs_start, &rlen) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ pos = rhdr + rlen;
+
+ *msgpos = pos;
+
+ return 0;
+}
+
+
+static size_t tls_client_cert_chain_der_len(struct tlsv1_client *conn)
+{
+ size_t len = 0;
+ struct x509_certificate *cert;
+
+ cert = conn->client_cert;
+ while (cert) {
+ len += 3 + cert->cert_len;
+ if (x509_certificate_self_signed(cert))
+ break;
+ cert = x509_certificate_get_subject(conn->trusted_certs,
+ &cert->issuer);
+ }
+
+ return len;
+}
+
+
+static u8 * tls_send_client_key_exchange(struct tlsv1_client *conn,
+ size_t *out_len)
+{
+ u8 *msg, *end, *pos;
+ size_t msglen;
+
+ *out_len = 0;
+
+ msglen = 1000;
+ if (conn->certificate_requested)
+ msglen += tls_client_cert_chain_der_len(conn);
+
+ msg = os_malloc(msglen);
+ if (msg == NULL)
+ return NULL;
+
+ pos = msg;
+ end = msg + msglen;
+
+ if (conn->certificate_requested) {
+ if (tls_write_client_certificate(conn, &pos, end) < 0) {
+ os_free(msg);
+ return NULL;
+ }
+ }
+
+ if (tls_write_client_key_exchange(conn, &pos, end) < 0 ||
+ (conn->certificate_requested && conn->client_key &&
+ tls_write_client_certificate_verify(conn, &pos, end) < 0) ||
+ tls_write_client_change_cipher_spec(conn, &pos, end) < 0 ||
+ tls_write_client_finished(conn, &pos, end) < 0) {
+ os_free(msg);
+ return NULL;
+ }
+
+ *out_len = pos - msg;
+
+ conn->state = SERVER_CHANGE_CIPHER_SPEC;
+
+ return msg;
+}
+
+
+static u8 * tls_send_change_cipher_spec(struct tlsv1_client *conn,
+ size_t *out_len)
+{
+ u8 *msg, *end, *pos;
+
+ *out_len = 0;
+
+ msg = os_malloc(1000);
+ if (msg == NULL)
+ return NULL;
+
+ pos = msg;
+ end = msg + 1000;
+
+ if (tls_write_client_change_cipher_spec(conn, &pos, end) < 0 ||
+ tls_write_client_finished(conn, &pos, end) < 0) {
+ os_free(msg);
+ return NULL;
+ }
+
+ *out_len = pos - msg;
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Session resumption completed "
+ "successfully");
+ conn->state = ESTABLISHED;
+
+ return msg;
+}
+
+
+static int tlsv1_client_process_handshake(struct tlsv1_client *conn, u8 ct,
+ const u8 *buf, size_t *len)
+{
+ if (ct == TLS_CONTENT_TYPE_HANDSHAKE && *len >= 4 &&
+ buf[0] == TLS_HANDSHAKE_TYPE_HELLO_REQUEST) {
+ size_t hr_len = WPA_GET_BE24(buf + 1);
+ if (hr_len > *len - 4) {
+ wpa_printf(MSG_DEBUG, "TLSv1: HelloRequest underflow");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_DECODE_ERROR);
+ return -1;
+ }
+ wpa_printf(MSG_DEBUG, "TLSv1: Ignored HelloRequest");
+ *len = 4 + hr_len;
+ return 0;
+ }
+
+ switch (conn->state) {
+ case SERVER_HELLO:
+ if (tls_process_server_hello(conn, ct, buf, len))
+ return -1;
+ break;
+ case SERVER_CERTIFICATE:
+ if (tls_process_certificate(conn, ct, buf, len))
+ return -1;
+ break;
+ case SERVER_KEY_EXCHANGE:
+ if (tls_process_server_key_exchange(conn, ct, buf, len))
+ return -1;
+ break;
+ case SERVER_CERTIFICATE_REQUEST:
+ if (tls_process_certificate_request(conn, ct, buf, len))
+ return -1;
+ break;
+ case SERVER_HELLO_DONE:
+ if (tls_process_server_hello_done(conn, ct, buf, len))
+ return -1;
+ break;
+ case SERVER_CHANGE_CIPHER_SPEC:
+ if (tls_process_server_change_cipher_spec(conn, ct, buf, len))
+ return -1;
+ break;
+ case SERVER_FINISHED:
+ if (tls_process_server_finished(conn, ct, buf, len))
+ return -1;
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected state %d "
+ "while processing received message",
+ conn->state);
+ return -1;
+ }
+
+ if (ct == TLS_CONTENT_TYPE_HANDSHAKE)
+ tls_verify_hash_add(conn, buf, *len);
+
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_handshake - Process TLS handshake
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @in_data: Input data from TLS peer
+ * @in_len: Input data length
+ * @out_len: Length of the output buffer.
+ * Returns: Pointer to output data, %NULL on failure
+ */
+u8 * tlsv1_client_handshake(struct tlsv1_client *conn,
+ const u8 *in_data, size_t in_len,
+ size_t *out_len)
+{
+ const u8 *pos, *end;
+ u8 *msg = NULL, *in_msg, *in_pos, *in_end, alert, ct;
+ size_t in_msg_len;
+
+ if (conn->state == CLIENT_HELLO) {
+ if (in_len)
+ return NULL;
+ return tls_send_client_hello(conn, out_len);
+ }
+
+ if (in_data == NULL || in_len == 0)
+ return NULL;
+
+ pos = in_data;
+ end = in_data + in_len;
+ in_msg = os_malloc(in_len);
+ if (in_msg == NULL)
+ return NULL;
+
+ /* Each received packet may include multiple records */
+ while (pos < end) {
+ in_msg_len = in_len;
+ if (tlsv1_record_receive(&conn->rl, pos, end - pos,
+ in_msg, &in_msg_len, &alert)) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Processing received "
+ "record failed");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
+ goto failed;
+ }
+ ct = pos[0];
+
+ in_pos = in_msg;
+ in_end = in_msg + in_msg_len;
+
+ /* Each received record may include multiple messages of the
+ * same ContentType. */
+ while (in_pos < in_end) {
+ in_msg_len = in_end - in_pos;
+ if (tlsv1_client_process_handshake(conn, ct, in_pos,
+ &in_msg_len) < 0)
+ goto failed;
+ in_pos += in_msg_len;
+ }
+
+ pos += TLS_RECORD_HEADER_LEN + WPA_GET_BE16(pos + 3);
+ }
+
+ os_free(in_msg);
+ in_msg = NULL;
+
+ switch (conn->state) {
+ case CLIENT_KEY_EXCHANGE:
+ msg = tls_send_client_key_exchange(conn, out_len);
+ break;
+ case CHANGE_CIPHER_SPEC:
+ msg = tls_send_change_cipher_spec(conn, out_len);
+ break;
+ case ACK_FINISHED:
+ wpa_printf(MSG_DEBUG, "TLSv1: Handshake completed "
+ "successfully");
+ conn->state = ESTABLISHED;
+ /* Need to return something to get final TLS ACK. */
+ msg = os_malloc(1);
+ *out_len = 0;
+ break;
+ default:
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected state %d while "
+ "generating reply", conn->state);
+ break;
+ }
+
+failed:
+ os_free(in_msg);
+ if (conn->alert_level) {
+ conn->state = FAILED;
+ os_free(msg);
+ msg = tls_send_alert(conn, conn->alert_level,
+ conn->alert_description, out_len);
+ }
+
+ return msg;
+}
+
+
+/**
+ * tlsv1_client_encrypt - Encrypt data into TLS tunnel
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @in_data: Pointer to plaintext data to be encrypted
+ * @in_len: Input buffer length
+ * @out_data: Pointer to output buffer (encrypted TLS data)
+ * @out_len: Maximum out_data length
+ * Returns: Number of bytes written to out_data, -1 on failure
+ *
+ * This function is used after TLS handshake has been completed successfully to
+ * send data in the encrypted tunnel.
+ */
+int tlsv1_client_encrypt(struct tlsv1_client *conn,
+ const u8 *in_data, size_t in_len,
+ u8 *out_data, size_t out_len)
+{
+ size_t rlen;
+
+ wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: Plaintext AppData",
+ in_data, in_len);
+
+ os_memcpy(out_data + TLS_RECORD_HEADER_LEN, in_data, in_len);
+
+ if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_APPLICATION_DATA,
+ out_data, out_len, in_len, &rlen) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ return rlen;
+}
+
+
+/**
+ * tlsv1_client_decrypt - Decrypt data from TLS tunnel
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @in_data: Pointer to input buffer (encrypted TLS data)
+ * @in_len: Input buffer length
+ * @out_data: Pointer to output buffer (decrypted data from TLS tunnel)
+ * @out_len: Maximum out_data length
+ * Returns: Number of bytes written to out_data, -1 on failure
+ *
+ * This function is used after TLS handshake has been completed successfully to
+ * receive data from the encrypted tunnel.
+ */
+int tlsv1_client_decrypt(struct tlsv1_client *conn,
+ const u8 *in_data, size_t in_len,
+ u8 *out_data, size_t out_len)
+{
+ const u8 *in_end, *pos;
+ int res;
+ u8 alert, *out_end, *out_pos;
+ size_t olen;
+
+ pos = in_data;
+ in_end = in_data + in_len;
+ out_pos = out_data;
+ out_end = out_data + out_len;
+
+ while (pos < in_end) {
+ if (pos[0] != TLS_CONTENT_TYPE_APPLICATION_DATA) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Unexpected content type "
+ "0x%x", pos[0]);
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_UNEXPECTED_MESSAGE);
+ return -1;
+ }
+
+ olen = out_end - out_pos;
+ res = tlsv1_record_receive(&conn->rl, pos, in_end - pos,
+ out_pos, &olen, &alert);
+ if (res < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Record layer processing "
+ "failed");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
+ return -1;
+ }
+ out_pos += olen;
+ if (out_pos > out_end) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Buffer not large enough "
+ "for processing the received record");
+ tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
+ TLS_ALERT_INTERNAL_ERROR);
+ return -1;
+ }
+
+ pos += TLS_RECORD_HEADER_LEN + WPA_GET_BE16(pos + 3);
+ }
+
+ return out_pos - out_data;
+}
+
+
+/**
+ * tlsv1_client_global_init - Initialize TLSv1 client
+ * Returns: 0 on success, -1 on failure
+ *
+ * This function must be called before using any other TLSv1 client functions.
+ */
+int tlsv1_client_global_init(void)
+{
+ return crypto_global_init();
+}
+
+
+/**
+ * tlsv1_client_global_deinit - Deinitialize TLSv1 client
+ *
+ * This function can be used to deinitialize the TLSv1 client that was
+ * initialized by calling tlsv1_client_global_init(). No TLSv1 client functions
+ * can be called after this before calling tlsv1_client_global_init() again.
+ */
+void tlsv1_client_global_deinit(void)
+{
+ crypto_global_deinit();
+}
+
+
+static void tlsv1_client_free_verify_hashes(struct tlsv1_client *conn)
+{
+ crypto_hash_finish(conn->verify_md5_client, NULL, NULL);
+ crypto_hash_finish(conn->verify_md5_server, NULL, NULL);
+ crypto_hash_finish(conn->verify_md5_cert, NULL, NULL);
+ crypto_hash_finish(conn->verify_sha1_client, NULL, NULL);
+ crypto_hash_finish(conn->verify_sha1_server, NULL, NULL);
+ crypto_hash_finish(conn->verify_sha1_cert, NULL, NULL);
+ conn->verify_md5_client = NULL;
+ conn->verify_md5_server = NULL;
+ conn->verify_md5_cert = NULL;
+ conn->verify_sha1_client = NULL;
+ conn->verify_sha1_server = NULL;
+ conn->verify_sha1_cert = NULL;
+}
+
+
+static int tlsv1_client_init_verify_hashes(struct tlsv1_client *conn)
+{
+ conn->verify_md5_client = crypto_hash_init(CRYPTO_HASH_ALG_MD5, NULL,
+ 0);
+ conn->verify_md5_server = crypto_hash_init(CRYPTO_HASH_ALG_MD5, NULL,
+ 0);
+ conn->verify_md5_cert = crypto_hash_init(CRYPTO_HASH_ALG_MD5, NULL, 0);
+ conn->verify_sha1_client = crypto_hash_init(CRYPTO_HASH_ALG_SHA1, NULL,
+ 0);
+ conn->verify_sha1_server = crypto_hash_init(CRYPTO_HASH_ALG_SHA1, NULL,
+ 0);
+ conn->verify_sha1_cert = crypto_hash_init(CRYPTO_HASH_ALG_SHA1, NULL,
+ 0);
+ if (conn->verify_md5_client == NULL ||
+ conn->verify_md5_server == NULL ||
+ conn->verify_md5_cert == NULL ||
+ conn->verify_sha1_client == NULL ||
+ conn->verify_sha1_server == NULL ||
+ conn->verify_sha1_cert == NULL) {
+ tlsv1_client_free_verify_hashes(conn);
+ return -1;
+ }
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_init - Initialize TLSv1 client connection
+ * Returns: Pointer to TLSv1 client connection data or %NULL on failure
+ */
+struct tlsv1_client * tlsv1_client_init(void)
+{
+ struct tlsv1_client *conn;
+ size_t count;
+ u16 *suites;
+
+ conn = os_zalloc(sizeof(*conn));
+ if (conn == NULL)
+ return NULL;
+
+ conn->state = CLIENT_HELLO;
+
+ if (tlsv1_client_init_verify_hashes(conn) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to initialize verify "
+ "hash");
+ os_free(conn);
+ return NULL;
+ }
+
+ count = 0;
+ suites = conn->cipher_suites;
+#ifndef CONFIG_CRYPTO_INTERNAL
+ suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA;
+#endif /* CONFIG_CRYPTO_INTERNAL */
+ suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA;
+ suites[count++] = TLS_RSA_WITH_3DES_EDE_CBC_SHA;
+ suites[count++] = TLS_RSA_WITH_RC4_128_SHA;
+ suites[count++] = TLS_RSA_WITH_RC4_128_MD5;
+ conn->num_cipher_suites = count;
+
+ return conn;
+}
+
+
+/**
+ * tlsv1_client_deinit - Deinitialize TLSv1 client connection
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ */
+void tlsv1_client_deinit(struct tlsv1_client *conn)
+{
+ crypto_public_key_free(conn->server_rsa_key);
+ tlsv1_record_set_cipher_suite(&conn->rl, TLS_NULL_WITH_NULL_NULL);
+ tlsv1_record_change_write_cipher(&conn->rl);
+ tlsv1_record_change_read_cipher(&conn->rl);
+ tlsv1_client_free_verify_hashes(conn);
+ os_free(conn->client_hello_ext);
+ tlsv1_client_free_dh(conn);
+ x509_certificate_chain_free(conn->trusted_certs);
+ x509_certificate_chain_free(conn->client_cert);
+ crypto_private_key_free(conn->client_key);
+ os_free(conn);
+}
+
+
+/**
+ * tlsv1_client_established - Check whether connection has been established
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * Returns: 1 if connection is established, 0 if not
+ */
+int tlsv1_client_established(struct tlsv1_client *conn)
+{
+ return conn->state == ESTABLISHED;
+}
+
+
+/**
+ * tlsv1_client_prf - Use TLS-PRF to derive keying material
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @label: Label (e.g., description of the key) for PRF
+ * @server_random_first: seed is 0 = client_random|server_random,
+ * 1 = server_random|client_random
+ * @out: Buffer for output data from TLS-PRF
+ * @out_len: Length of the output buffer
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_prf(struct tlsv1_client *conn, const char *label,
+ int server_random_first, u8 *out, size_t out_len)
+{
+ u8 seed[2 * TLS_RANDOM_LEN];
+
+ if (conn->state != ESTABLISHED)
+ return -1;
+
+ if (server_random_first) {
+ os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN);
+ os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random,
+ TLS_RANDOM_LEN);
+ } else {
+ os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN);
+ os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random,
+ TLS_RANDOM_LEN);
+ }
+
+ return tls_prf(conn->master_secret, TLS_MASTER_SECRET_LEN,
+ label, seed, 2 * TLS_RANDOM_LEN, out, out_len);
+}
+
+
+/**
+ * tlsv1_client_get_cipher - Get current cipher name
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @buf: Buffer for the cipher name
+ * @buflen: buf size
+ * Returns: 0 on success, -1 on failure
+ *
+ * Get the name of the currently used cipher.
+ */
+int tlsv1_client_get_cipher(struct tlsv1_client *conn, char *buf,
+ size_t buflen)
+{
+ char *cipher;
+
+ switch (conn->rl.cipher_suite) {
+ case TLS_RSA_WITH_RC4_128_MD5:
+ cipher = "RC4-MD5";
+ break;
+ case TLS_RSA_WITH_RC4_128_SHA:
+ cipher = "RC4-SHA";
+ break;
+ case TLS_RSA_WITH_DES_CBC_SHA:
+ cipher = "DES-CBC-SHA";
+ break;
+ case TLS_RSA_WITH_3DES_EDE_CBC_SHA:
+ cipher = "DES-CBC3-SHA";
+ break;
+ default:
+ return -1;
+ }
+
+ os_snprintf(buf, buflen, "%s", cipher);
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_shutdown - Shutdown TLS connection
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_shutdown(struct tlsv1_client *conn)
+{
+ conn->state = CLIENT_HELLO;
+
+ tlsv1_client_free_verify_hashes(conn);
+ if (tlsv1_client_init_verify_hashes(conn) < 0) {
+ wpa_printf(MSG_DEBUG, "TLSv1: Failed to re-initialize verify "
+ "hash");
+ return -1;
+ }
+
+ tlsv1_record_set_cipher_suite(&conn->rl, TLS_NULL_WITH_NULL_NULL);
+ tlsv1_record_change_write_cipher(&conn->rl);
+ tlsv1_record_change_read_cipher(&conn->rl);
+
+ conn->certificate_requested = 0;
+ crypto_public_key_free(conn->server_rsa_key);
+ conn->server_rsa_key = NULL;
+ conn->session_resumed = 0;
+
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_resumed - Was session resumption used
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * Returns: 1 if current session used session resumption, 0 if not
+ */
+int tlsv1_client_resumed(struct tlsv1_client *conn)
+{
+ return !!conn->session_resumed;
+}
+
+
+/**
+ * tlsv1_client_hello_ext - Set TLS extension for ClientHello
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @ext_type: Extension type
+ * @data: Extension payload (%NULL to remove extension)
+ * @data_len: Extension payload length
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_hello_ext(struct tlsv1_client *conn, int ext_type,
+ const u8 *data, size_t data_len)
+{
+ u8 *pos;
+
+ conn->ticket = 0;
+ os_free(conn->client_hello_ext);
+ conn->client_hello_ext = NULL;
+ conn->client_hello_ext_len = 0;
+
+ if (data == NULL || data_len == 0)
+ return 0;
+
+ pos = conn->client_hello_ext = os_malloc(6 + data_len);
+ if (pos == NULL)
+ return -1;
+
+ WPA_PUT_BE16(pos, 4 + data_len);
+ pos += 2;
+ WPA_PUT_BE16(pos, ext_type);
+ pos += 2;
+ WPA_PUT_BE16(pos, data_len);
+ pos += 2;
+ os_memcpy(pos, data, data_len);
+ conn->client_hello_ext_len = 6 + data_len;
+
+ if (ext_type == TLS_EXT_PAC_OPAQUE) {
+ conn->ticket = 1;
+ wpa_printf(MSG_DEBUG, "TLSv1: Using session ticket");
+ }
+
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_get_keys - Get master key and random data from TLS connection
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @keys: Structure of key/random data (filled on success)
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_get_keys(struct tlsv1_client *conn, struct tls_keys *keys)
+{
+ os_memset(keys, 0, sizeof(*keys));
+ if (conn->state == CLIENT_HELLO)
+ return -1;
+
+ keys->client_random = conn->client_random;
+ keys->client_random_len = TLS_RANDOM_LEN;
+
+ if (conn->state != SERVER_HELLO) {
+ keys->server_random = conn->server_random;
+ keys->server_random_len = TLS_RANDOM_LEN;
+ keys->master_key = conn->master_secret;
+ keys->master_key_len = TLS_MASTER_SECRET_LEN;
+ }
+
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_set_master_key - Configure master secret for TLS connection
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @key: TLS pre-master-secret
+ * @key_len: length of key in bytes
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_set_master_key(struct tlsv1_client *conn,
+ const u8 *key, size_t key_len)
+{
+ if (key_len > TLS_MASTER_SECRET_LEN)
+ return -1;
+ wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: master_secret from session "
+ "ticket", key, key_len);
+ os_memcpy(conn->master_secret, key, key_len);
+ conn->ticket_key = 1;
+
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_get_keyblock_size - Get TLS key_block size
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * Returns: Size of the key_block for the negotiated cipher suite or -1 on
+ * failure
+ */
+int tlsv1_client_get_keyblock_size(struct tlsv1_client *conn)
+{
+ if (conn->state == CLIENT_HELLO || conn->state == SERVER_HELLO)
+ return -1;
+
+ return 2 * (conn->rl.hash_size + conn->rl.key_material_len +
+ conn->rl.iv_size);
+}
+
+
+/**
+ * tlsv1_client_set_cipher_list - Configure acceptable cipher suites
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @ciphers: Zero (TLS_CIPHER_NONE) terminated list of allowed ciphers
+ * (TLS_CIPHER_*).
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_set_cipher_list(struct tlsv1_client *conn, u8 *ciphers)
+{
+#ifdef EAP_FAST
+ size_t count;
+ u16 *suites;
+
+ /* TODO: implement proper configuration of cipher suites */
+ if (ciphers[0] == TLS_CIPHER_ANON_DH_AES128_SHA) {
+ count = 0;
+ suites = conn->cipher_suites;
+ suites[count++] = TLS_DH_anon_WITH_AES_256_CBC_SHA;
+ suites[count++] = TLS_DH_anon_WITH_AES_128_CBC_SHA;
+ suites[count++] = TLS_DH_anon_WITH_3DES_EDE_CBC_SHA;
+ suites[count++] = TLS_DH_anon_WITH_RC4_128_MD5;
+ suites[count++] = TLS_DH_anon_WITH_DES_CBC_SHA;
+ conn->num_cipher_suites = count;
+ }
+
+ return 0;
+#else /* EAP_FAST */
+ return -1;
+#endif /* EAP_FAST */
+}
+
+
+static int tlsv1_client_add_cert_der(struct x509_certificate **chain,
+ const u8 *buf, size_t len)
+{
+ struct x509_certificate *cert;
+ char name[128];
+
+ cert = x509_certificate_parse(buf, len);
+ if (cert == NULL) {
+ wpa_printf(MSG_INFO, "TLSv1: %s - failed to parse certificate",
+ __func__);
+ return -1;
+ }
+
+ cert->next = *chain;
+ *chain = cert;
+
+ x509_name_string(&cert->subject, name, sizeof(name));
+ wpa_printf(MSG_DEBUG, "TLSv1: Added certificate: %s", name);
+
+ return 0;
+}
+
+
+static const char *pem_cert_begin = "-----BEGIN CERTIFICATE-----";
+static const char *pem_cert_end = "-----END CERTIFICATE-----";
+
+
+static const u8 * search_tag(const char *tag, const u8 *buf, size_t len)
+{
+ size_t i, plen;
+
+ plen = os_strlen(tag);
+ if (len < plen)
+ return NULL;
+
+ for (i = 0; i < len - plen; i++) {
+ if (os_memcmp(buf + i, tag, plen) == 0)
+ return buf + i;
+ }
+
+ return NULL;
+}
+
+
+static int tlsv1_client_add_cert(struct x509_certificate **chain,
+ const u8 *buf, size_t len)
+{
+ const u8 *pos, *end;
+ unsigned char *der;
+ size_t der_len;
+
+ pos = search_tag(pem_cert_begin, buf, len);
+ if (!pos) {
+ wpa_printf(MSG_DEBUG, "TLSv1: No PEM certificate tag found - "
+ "assume DER format");
+ return tlsv1_client_add_cert_der(chain, buf, len);
+ }
+
+ wpa_printf(MSG_DEBUG, "TLSv1: Converting PEM format certificate into "
+ "DER format");
+
+ while (pos) {
+ pos += os_strlen(pem_cert_begin);
+ end = search_tag(pem_cert_end, pos, buf + len - pos);
+ if (end == NULL) {
+ wpa_printf(MSG_INFO, "TLSv1: Could not find PEM "
+ "certificate end tag (%s)", pem_cert_end);
+ return -1;
+ }
+
+ der = base64_decode(pos, end - pos, &der_len);
+ if (der == NULL) {
+ wpa_printf(MSG_INFO, "TLSv1: Could not decode PEM "
+ "certificate");
+ return -1;
+ }
+
+ if (tlsv1_client_add_cert_der(chain, der, der_len) < 0) {
+ wpa_printf(MSG_INFO, "TLSv1: Failed to parse PEM "
+ "certificate after DER conversion");
+ os_free(der);
+ return -1;
+ }
+
+ os_free(der);
+
+ end += os_strlen(pem_cert_end);
+ pos = search_tag(pem_cert_begin, end, buf + len - end);
+ }
+
+ return 0;
+}
+
+
+static int tlsv1_client_set_cert_chain(struct x509_certificate **chain,
+ const char *cert, const u8 *cert_blob,
+ size_t cert_blob_len)
+{
+ if (cert_blob)
+ return tlsv1_client_add_cert(chain, cert_blob, cert_blob_len);
+
+ if (cert) {
+ u8 *buf;
+ size_t len;
+ int ret;
+
+ buf = (u8 *) os_readfile(cert, &len);
+ if (buf == NULL) {
+ wpa_printf(MSG_INFO, "TLSv1: Failed to read '%s'",
+ cert);
+ return -1;
+ }
+
+ ret = tlsv1_client_add_cert(chain, buf, len);
+ os_free(buf);
+ return ret;
+ }
+
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_set_ca_cert - Set trusted CA certificate(s)
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @cert: File or reference name for X.509 certificate in PEM or DER format
+ * @cert_blob: cert as inlined data or %NULL if not used
+ * @cert_blob_len: ca_cert_blob length
+ * @path: Path to CA certificates (not yet supported)
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_set_ca_cert(struct tlsv1_client *conn, const char *cert,
+ const u8 *cert_blob, size_t cert_blob_len,
+ const char *path)
+{
+ if (tlsv1_client_set_cert_chain(&conn->trusted_certs, cert,
+ cert_blob, cert_blob_len) < 0)
+ return -1;
+
+ if (path) {
+ /* TODO: add support for reading number of certificate files */
+ wpa_printf(MSG_INFO, "TLSv1: Use of CA certificate directory "
+ "not yet supported");
+ return -1;
+ }
+
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_set_client_cert - Set client certificate
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @cert: File or reference name for X.509 certificate in PEM or DER format
+ * @cert_blob: cert as inlined data or %NULL if not used
+ * @cert_blob_len: ca_cert_blob length
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_set_client_cert(struct tlsv1_client *conn, const char *cert,
+ const u8 *cert_blob, size_t cert_blob_len)
+{
+ return tlsv1_client_set_cert_chain(&conn->client_cert, cert,
+ cert_blob, cert_blob_len);
+}
+
+
+static int tlsv1_client_set_key(struct tlsv1_client *conn,
+ const u8 *key, size_t len)
+{
+ conn->client_key = crypto_private_key_import(key, len);
+ if (conn->client_key == NULL) {
+ wpa_printf(MSG_INFO, "TLSv1: Failed to parse private key");
+ return -1;
+ }
+ return 0;
+}
+
+
+/**
+ * tlsv1_client_set_private_key - Set client private key
+ * @conn: TLSv1 client connection data from tlsv1_client_init()
+ * @private_key: File or reference name for the key in PEM or DER format
+ * @private_key_passwd: Passphrase for decrypted private key, %NULL if no
+ * passphrase is used.
+ * @private_key_blob: private_key as inlined data or %NULL if not used
+ * @private_key_blob_len: private_key_blob length
+ * Returns: 0 on success, -1 on failure
+ */
+int tlsv1_client_set_private_key(struct tlsv1_client *conn,
+ const char *private_key,
+ const char *private_key_passwd,
+ const u8 *private_key_blob,
+ size_t private_key_blob_len)
+{
+ crypto_private_key_free(conn->client_key);
+ conn->client_key = NULL;
+
+ if (private_key_blob)
+ return tlsv1_client_set_key(conn, private_key_blob,
+ private_key_blob_len);
+
+ if (private_key) {
+ u8 *buf;
+ size_t len;
+ int ret;
+
+ buf = (u8 *) os_readfile(private_key, &len);
+ if (buf == NULL) {
+ wpa_printf(MSG_INFO, "TLSv1: Failed to read '%s'",
+ private_key);
+ return -1;
+ }
+
+ ret = tlsv1_client_set_key(conn, buf, len);
+ os_free(buf);
+ return ret;
+ }
+
+ return 0;
+}