2008-02-27 20:34:43 -05:00
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/*
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2011-11-27 15:13:52 -05:00
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* TLS v1.0/v1.1/v1.2 client (RFC 2246, RFC 4346, RFC 5246)
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2015-12-13 16:11:32 -05:00
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* Copyright (c) 2006-2015, Jouni Malinen <j@w1.fi>
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2008-02-27 20:34:43 -05:00
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*
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2012-02-11 09:46:35 -05:00
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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2008-02-27 20:34:43 -05:00
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*/
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#include "includes.h"
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#include "common.h"
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2009-11-29 16:04:43 -05:00
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#include "crypto/sha1.h"
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#include "crypto/tls.h"
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2015-12-13 16:11:32 -05:00
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#include "x509v3.h"
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2008-02-27 20:34:43 -05:00
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#include "tlsv1_common.h"
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#include "tlsv1_record.h"
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#include "tlsv1_client.h"
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#include "tlsv1_client_i.h"
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/* TODO:
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* Support for a message fragmented across several records (RFC 2246, 6.2.1)
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*/
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void tls_alert(struct tlsv1_client *conn, u8 level, u8 description)
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{
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conn->alert_level = level;
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conn->alert_description = description;
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}
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void tlsv1_client_free_dh(struct tlsv1_client *conn)
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{
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os_free(conn->dh_p);
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os_free(conn->dh_g);
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os_free(conn->dh_ys);
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conn->dh_p = conn->dh_g = conn->dh_ys = NULL;
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}
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int tls_derive_pre_master_secret(u8 *pre_master_secret)
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{
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WPA_PUT_BE16(pre_master_secret, TLS_VERSION);
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if (os_get_random(pre_master_secret + 2,
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TLS_PRE_MASTER_SECRET_LEN - 2))
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return -1;
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return 0;
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}
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int tls_derive_keys(struct tlsv1_client *conn,
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const u8 *pre_master_secret, size_t pre_master_secret_len)
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{
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u8 seed[2 * TLS_RANDOM_LEN];
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u8 key_block[TLS_MAX_KEY_BLOCK_LEN];
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u8 *pos;
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size_t key_block_len;
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if (pre_master_secret) {
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wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: pre_master_secret",
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pre_master_secret, pre_master_secret_len);
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os_memcpy(seed, conn->client_random, TLS_RANDOM_LEN);
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os_memcpy(seed + TLS_RANDOM_LEN, conn->server_random,
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TLS_RANDOM_LEN);
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2011-11-27 14:35:11 -05:00
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if (tls_prf(conn->rl.tls_version,
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pre_master_secret, pre_master_secret_len,
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2008-02-27 20:34:43 -05:00
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"master secret", seed, 2 * TLS_RANDOM_LEN,
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conn->master_secret, TLS_MASTER_SECRET_LEN)) {
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wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive "
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"master_secret");
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return -1;
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}
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wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: master_secret",
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conn->master_secret, TLS_MASTER_SECRET_LEN);
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}
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os_memcpy(seed, conn->server_random, TLS_RANDOM_LEN);
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os_memcpy(seed + TLS_RANDOM_LEN, conn->client_random, TLS_RANDOM_LEN);
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2011-09-25 10:24:46 -04:00
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key_block_len = 2 * (conn->rl.hash_size + conn->rl.key_material_len);
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if (conn->rl.tls_version == TLS_VERSION_1)
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key_block_len += 2 * conn->rl.iv_size;
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2011-11-27 14:35:11 -05:00
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if (tls_prf(conn->rl.tls_version,
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conn->master_secret, TLS_MASTER_SECRET_LEN,
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2008-02-27 20:34:43 -05:00
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"key expansion", seed, 2 * TLS_RANDOM_LEN,
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key_block, key_block_len)) {
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wpa_printf(MSG_DEBUG, "TLSv1: Failed to derive key_block");
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return -1;
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}
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wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: key_block",
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key_block, key_block_len);
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pos = key_block;
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/* client_write_MAC_secret */
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os_memcpy(conn->rl.write_mac_secret, pos, conn->rl.hash_size);
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pos += conn->rl.hash_size;
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/* server_write_MAC_secret */
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os_memcpy(conn->rl.read_mac_secret, pos, conn->rl.hash_size);
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pos += conn->rl.hash_size;
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/* client_write_key */
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os_memcpy(conn->rl.write_key, pos, conn->rl.key_material_len);
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pos += conn->rl.key_material_len;
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/* server_write_key */
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os_memcpy(conn->rl.read_key, pos, conn->rl.key_material_len);
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pos += conn->rl.key_material_len;
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2011-09-25 10:24:46 -04:00
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if (conn->rl.tls_version == TLS_VERSION_1) {
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/* client_write_IV */
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os_memcpy(conn->rl.write_iv, pos, conn->rl.iv_size);
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pos += conn->rl.iv_size;
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/* server_write_IV */
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os_memcpy(conn->rl.read_iv, pos, conn->rl.iv_size);
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} else {
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/*
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* Use IV field to set the mask value for TLS v1.1. A fixed
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* mask of zero is used per the RFC 4346, 6.2.3.2 CBC Block
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* Cipher option 2a.
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*/
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os_memset(conn->rl.write_iv, 0, conn->rl.iv_size);
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}
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2008-02-27 20:34:43 -05:00
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return 0;
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}
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/**
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* tlsv1_client_handshake - Process TLS handshake
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* @conn: TLSv1 client connection data from tlsv1_client_init()
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* @in_data: Input data from TLS peer
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* @in_len: Input data length
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* @out_len: Length of the output buffer.
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2009-01-02 15:28:04 -05:00
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* @appl_data: Pointer to application data pointer, or %NULL if dropped
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* @appl_data_len: Pointer to variable that is set to appl_data length
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2011-11-13 03:47:04 -05:00
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* @need_more_data: Set to 1 if more data would be needed to complete
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* processing
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2008-02-27 20:34:43 -05:00
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* Returns: Pointer to output data, %NULL on failure
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*/
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u8 * tlsv1_client_handshake(struct tlsv1_client *conn,
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const u8 *in_data, size_t in_len,
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size_t *out_len, u8 **appl_data,
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2011-11-13 03:47:04 -05:00
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size_t *appl_data_len, int *need_more_data)
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2008-02-27 20:34:43 -05:00
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{
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const u8 *pos, *end;
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2011-11-13 03:47:04 -05:00
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u8 *msg = NULL, *in_msg = NULL, *in_pos, *in_end, alert, ct;
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2008-02-27 20:34:43 -05:00
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size_t in_msg_len;
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int no_appl_data;
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2011-11-05 07:04:02 -04:00
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int used;
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2008-02-27 20:34:43 -05:00
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2011-11-13 03:47:04 -05:00
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if (need_more_data)
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*need_more_data = 0;
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2008-02-27 20:34:43 -05:00
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if (conn->state == CLIENT_HELLO) {
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if (in_len)
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return NULL;
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return tls_send_client_hello(conn, out_len);
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}
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2011-11-13 03:47:04 -05:00
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if (conn->partial_input) {
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if (wpabuf_resize(&conn->partial_input, in_len) < 0) {
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wpa_printf(MSG_DEBUG, "TLSv1: Failed to allocate "
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"memory for pending record");
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tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
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TLS_ALERT_INTERNAL_ERROR);
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goto failed;
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}
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wpabuf_put_data(conn->partial_input, in_data, in_len);
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in_data = wpabuf_head(conn->partial_input);
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in_len = wpabuf_len(conn->partial_input);
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}
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2008-02-27 20:34:43 -05:00
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if (in_data == NULL || in_len == 0)
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return NULL;
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pos = in_data;
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end = in_data + in_len;
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in_msg = os_malloc(in_len);
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if (in_msg == NULL)
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return NULL;
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/* Each received packet may include multiple records */
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while (pos < end) {
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in_msg_len = in_len;
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2011-11-05 07:04:02 -04:00
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used = tlsv1_record_receive(&conn->rl, pos, end - pos,
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in_msg, &in_msg_len, &alert);
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if (used < 0) {
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2008-02-27 20:34:43 -05:00
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wpa_printf(MSG_DEBUG, "TLSv1: Processing received "
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"record failed");
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tls_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
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goto failed;
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}
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2011-11-05 07:04:02 -04:00
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if (used == 0) {
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2011-11-13 03:47:04 -05:00
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struct wpabuf *partial;
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wpa_printf(MSG_DEBUG, "TLSv1: Need more data");
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partial = wpabuf_alloc_copy(pos, end - pos);
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wpabuf_free(conn->partial_input);
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conn->partial_input = partial;
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if (conn->partial_input == NULL) {
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wpa_printf(MSG_DEBUG, "TLSv1: Failed to "
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"allocate memory for pending "
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"record");
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tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
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TLS_ALERT_INTERNAL_ERROR);
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goto failed;
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}
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2011-11-13 13:57:32 -05:00
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os_free(in_msg);
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2011-11-13 03:47:04 -05:00
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if (need_more_data)
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*need_more_data = 1;
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2011-11-18 15:07:30 -05:00
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return NULL;
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2011-11-05 07:04:02 -04:00
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}
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2008-02-27 20:34:43 -05:00
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ct = pos[0];
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in_pos = in_msg;
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in_end = in_msg + in_msg_len;
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/* Each received record may include multiple messages of the
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* same ContentType. */
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while (in_pos < in_end) {
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in_msg_len = in_end - in_pos;
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if (tlsv1_client_process_handshake(conn, ct, in_pos,
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&in_msg_len,
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appl_data,
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appl_data_len) < 0)
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goto failed;
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in_pos += in_msg_len;
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}
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2011-11-05 07:04:02 -04:00
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pos += used;
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2008-02-27 20:34:43 -05:00
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}
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os_free(in_msg);
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in_msg = NULL;
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no_appl_data = appl_data == NULL || *appl_data == NULL;
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msg = tlsv1_client_handshake_write(conn, out_len, no_appl_data);
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failed:
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os_free(in_msg);
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if (conn->alert_level) {
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2011-11-13 03:47:04 -05:00
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wpabuf_free(conn->partial_input);
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conn->partial_input = NULL;
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2008-02-27 20:34:43 -05:00
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conn->state = FAILED;
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os_free(msg);
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msg = tlsv1_client_send_alert(conn, conn->alert_level,
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conn->alert_description,
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out_len);
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} else if (msg == NULL) {
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msg = os_zalloc(1);
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*out_len = 0;
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}
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2011-11-13 03:47:04 -05:00
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if (need_more_data == NULL || !(*need_more_data)) {
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wpabuf_free(conn->partial_input);
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conn->partial_input = NULL;
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}
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2008-02-27 20:34:43 -05:00
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return msg;
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}
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/**
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* tlsv1_client_encrypt - Encrypt data into TLS tunnel
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* @conn: TLSv1 client connection data from tlsv1_client_init()
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* @in_data: Pointer to plaintext data to be encrypted
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* @in_len: Input buffer length
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* @out_data: Pointer to output buffer (encrypted TLS data)
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* @out_len: Maximum out_data length
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* Returns: Number of bytes written to out_data, -1 on failure
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*
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* This function is used after TLS handshake has been completed successfully to
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* send data in the encrypted tunnel.
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*/
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int tlsv1_client_encrypt(struct tlsv1_client *conn,
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const u8 *in_data, size_t in_len,
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u8 *out_data, size_t out_len)
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{
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size_t rlen;
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wpa_hexdump_key(MSG_MSGDUMP, "TLSv1: Plaintext AppData",
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in_data, in_len);
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if (tlsv1_record_send(&conn->rl, TLS_CONTENT_TYPE_APPLICATION_DATA,
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2011-09-25 10:11:52 -04:00
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out_data, out_len, in_data, in_len, &rlen) < 0) {
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2008-02-27 20:34:43 -05:00
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wpa_printf(MSG_DEBUG, "TLSv1: Failed to create a record");
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tls_alert(conn, TLS_ALERT_LEVEL_FATAL,
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TLS_ALERT_INTERNAL_ERROR);
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return -1;
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}
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return rlen;
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}
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/**
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* tlsv1_client_decrypt - Decrypt data from TLS tunnel
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* @conn: TLSv1 client connection data from tlsv1_client_init()
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* @in_data: Pointer to input buffer (encrypted TLS data)
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* @in_len: Input buffer length
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2011-11-13 03:47:04 -05:00
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* @need_more_data: Set to 1 if more data would be needed to complete
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* processing
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* Returns: Decrypted data or %NULL on failure
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2008-02-27 20:34:43 -05:00
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*
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* This function is used after TLS handshake has been completed successfully to
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* receive data from the encrypted tunnel.
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*/
|
2011-11-13 03:47:04 -05:00
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struct wpabuf * tlsv1_client_decrypt(struct tlsv1_client *conn,
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const u8 *in_data, size_t in_len,
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int *need_more_data)
|
2008-02-27 20:34:43 -05:00
|
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{
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const u8 *in_end, *pos;
|
2011-11-05 07:04:02 -04:00
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int used;
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2011-11-13 03:47:04 -05:00
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u8 alert, *out_pos, ct;
|
2008-02-27 20:34:43 -05:00
|
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size_t olen;
|
2011-11-13 03:47:04 -05:00
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struct wpabuf *buf = NULL;
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if (need_more_data)
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*need_more_data = 0;
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|
|
|
|
|
|
|
if (conn->partial_input) {
|
|
|
|
if (wpabuf_resize(&conn->partial_input, in_len) < 0) {
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Failed to allocate "
|
|
|
|
"memory for pending record");
|
|
|
|
alert = TLS_ALERT_INTERNAL_ERROR;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
wpabuf_put_data(conn->partial_input, in_data, in_len);
|
|
|
|
in_data = wpabuf_head(conn->partial_input);
|
|
|
|
in_len = wpabuf_len(conn->partial_input);
|
|
|
|
}
|
2008-02-27 20:34:43 -05:00
|
|
|
|
|
|
|
pos = in_data;
|
|
|
|
in_end = in_data + in_len;
|
|
|
|
|
|
|
|
while (pos < in_end) {
|
2011-11-05 07:04:02 -04:00
|
|
|
ct = pos[0];
|
2011-11-13 03:47:04 -05:00
|
|
|
if (wpabuf_resize(&buf, in_end - pos) < 0) {
|
|
|
|
alert = TLS_ALERT_INTERNAL_ERROR;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
out_pos = wpabuf_put(buf, 0);
|
|
|
|
olen = wpabuf_tailroom(buf);
|
2011-11-05 07:04:02 -04:00
|
|
|
used = tlsv1_record_receive(&conn->rl, pos, in_end - pos,
|
|
|
|
out_pos, &olen, &alert);
|
|
|
|
if (used < 0) {
|
2008-02-27 20:34:43 -05:00
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Record layer processing "
|
|
|
|
"failed");
|
2011-11-13 03:47:04 -05:00
|
|
|
goto fail;
|
2008-02-27 20:34:43 -05:00
|
|
|
}
|
2011-11-05 07:04:02 -04:00
|
|
|
if (used == 0) {
|
2011-11-13 03:47:04 -05:00
|
|
|
struct wpabuf *partial;
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Need more data");
|
|
|
|
partial = wpabuf_alloc_copy(pos, in_end - pos);
|
|
|
|
wpabuf_free(conn->partial_input);
|
|
|
|
conn->partial_input = partial;
|
|
|
|
if (conn->partial_input == NULL) {
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Failed to "
|
|
|
|
"allocate memory for pending "
|
|
|
|
"record");
|
|
|
|
alert = TLS_ALERT_INTERNAL_ERROR;
|
|
|
|
goto fail;
|
|
|
|
}
|
|
|
|
if (need_more_data)
|
|
|
|
*need_more_data = 1;
|
|
|
|
return buf;
|
2011-11-05 07:04:02 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
if (ct == TLS_CONTENT_TYPE_ALERT) {
|
|
|
|
if (olen < 2) {
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Alert "
|
|
|
|
"underflow");
|
2011-11-13 03:47:04 -05:00
|
|
|
alert = TLS_ALERT_DECODE_ERROR;
|
|
|
|
goto fail;
|
2011-11-05 07:04:02 -04:00
|
|
|
}
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Received alert %d:%d",
|
|
|
|
out_pos[0], out_pos[1]);
|
|
|
|
if (out_pos[0] == TLS_ALERT_LEVEL_WARNING) {
|
|
|
|
/* Continue processing */
|
|
|
|
pos += used;
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
|
2011-11-13 03:47:04 -05:00
|
|
|
alert = out_pos[1];
|
|
|
|
goto fail;
|
2011-11-05 07:04:02 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
if (ct != TLS_CONTENT_TYPE_APPLICATION_DATA) {
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Unexpected content type "
|
|
|
|
"0x%x when decrypting application data",
|
|
|
|
pos[0]);
|
2011-11-13 03:47:04 -05:00
|
|
|
alert = TLS_ALERT_UNEXPECTED_MESSAGE;
|
|
|
|
goto fail;
|
2011-11-05 07:04:02 -04:00
|
|
|
}
|
|
|
|
|
2011-11-13 03:47:04 -05:00
|
|
|
wpabuf_put(buf, olen);
|
2008-02-27 20:34:43 -05:00
|
|
|
|
2011-11-05 07:04:02 -04:00
|
|
|
pos += used;
|
2008-02-27 20:34:43 -05:00
|
|
|
}
|
|
|
|
|
2011-11-13 03:47:04 -05:00
|
|
|
wpabuf_free(conn->partial_input);
|
|
|
|
conn->partial_input = NULL;
|
|
|
|
return buf;
|
|
|
|
|
|
|
|
fail:
|
|
|
|
wpabuf_free(buf);
|
|
|
|
wpabuf_free(conn->partial_input);
|
|
|
|
conn->partial_input = NULL;
|
|
|
|
tls_alert(conn, TLS_ALERT_LEVEL_FATAL, alert);
|
|
|
|
return NULL;
|
2008-02-27 20:34:43 -05:00
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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();
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* 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 (tls_verify_hash_init(&conn->verify) < 0) {
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Failed to initialize verify "
|
|
|
|
"hash");
|
|
|
|
os_free(conn);
|
|
|
|
return NULL;
|
|
|
|
}
|
|
|
|
|
|
|
|
count = 0;
|
|
|
|
suites = conn->cipher_suites;
|
2014-03-09 09:43:50 -04:00
|
|
|
suites[count++] = TLS_DHE_RSA_WITH_AES_256_CBC_SHA256;
|
2011-11-27 15:33:54 -05:00
|
|
|
suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA256;
|
2014-03-09 09:43:50 -04:00
|
|
|
suites[count++] = TLS_DHE_RSA_WITH_AES_256_CBC_SHA;
|
2008-02-27 20:34:43 -05:00
|
|
|
suites[count++] = TLS_RSA_WITH_AES_256_CBC_SHA;
|
2014-03-09 09:43:50 -04:00
|
|
|
suites[count++] = TLS_DHE_RSA_WITH_AES_128_CBC_SHA256;
|
2011-11-27 15:33:54 -05:00
|
|
|
suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA256;
|
2014-03-09 09:43:50 -04:00
|
|
|
suites[count++] = TLS_DHE_RSA_WITH_AES_128_CBC_SHA;
|
2008-02-27 20:34:43 -05:00
|
|
|
suites[count++] = TLS_RSA_WITH_AES_128_CBC_SHA;
|
2014-03-09 09:43:50 -04:00
|
|
|
suites[count++] = TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA;
|
2008-02-27 20:34:43 -05:00
|
|
|
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;
|
|
|
|
|
2011-09-25 10:24:46 -04:00
|
|
|
conn->rl.tls_version = TLS_VERSION;
|
|
|
|
|
2008-02-27 20:34:43 -05:00
|
|
|
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);
|
|
|
|
tls_verify_hash_free(&conn->verify);
|
|
|
|
os_free(conn->client_hello_ext);
|
|
|
|
tlsv1_client_free_dh(conn);
|
|
|
|
tlsv1_cred_free(conn->cred);
|
2011-11-13 03:47:04 -05:00
|
|
|
wpabuf_free(conn->partial_input);
|
2015-12-13 16:11:32 -05:00
|
|
|
x509_certificate_chain_free(conn->server_cert);
|
2008-02-27 20:34:43 -05:00
|
|
|
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);
|
|
|
|
}
|
|
|
|
|
2011-11-27 14:35:11 -05:00
|
|
|
return tls_prf(conn->rl.tls_version,
|
|
|
|
conn->master_secret, TLS_MASTER_SECRET_LEN,
|
2008-02-27 20:34:43 -05:00
|
|
|
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;
|
2014-12-09 05:31:08 -05:00
|
|
|
case TLS_DHE_RSA_WITH_DES_CBC_SHA:
|
|
|
|
cipher = "DHE-RSA-DES-CBC-SHA";
|
|
|
|
break;
|
|
|
|
case TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA:
|
|
|
|
cipher = "DHE-RSA-DES-CBC3-SHA";
|
|
|
|
break;
|
|
|
|
case TLS_DH_anon_WITH_RC4_128_MD5:
|
|
|
|
cipher = "ADH-RC4-MD5";
|
|
|
|
break;
|
|
|
|
case TLS_DH_anon_WITH_DES_CBC_SHA:
|
|
|
|
cipher = "ADH-DES-SHA";
|
|
|
|
break;
|
|
|
|
case TLS_DH_anon_WITH_3DES_EDE_CBC_SHA:
|
|
|
|
cipher = "ADH-DES-CBC3-SHA";
|
|
|
|
break;
|
|
|
|
case TLS_RSA_WITH_AES_128_CBC_SHA:
|
|
|
|
cipher = "AES-128-SHA";
|
|
|
|
break;
|
|
|
|
case TLS_DHE_RSA_WITH_AES_128_CBC_SHA:
|
|
|
|
cipher = "DHE-RSA-AES-128-SHA";
|
2011-11-27 15:33:54 -05:00
|
|
|
break;
|
2008-02-27 20:34:43 -05:00
|
|
|
case TLS_DH_anon_WITH_AES_128_CBC_SHA:
|
|
|
|
cipher = "ADH-AES-128-SHA";
|
|
|
|
break;
|
|
|
|
case TLS_RSA_WITH_AES_256_CBC_SHA:
|
|
|
|
cipher = "AES-256-SHA";
|
|
|
|
break;
|
2014-12-09 05:31:08 -05:00
|
|
|
case TLS_DHE_RSA_WITH_AES_256_CBC_SHA:
|
|
|
|
cipher = "DHE-RSA-AES-256-SHA";
|
2011-11-27 15:33:54 -05:00
|
|
|
break;
|
2014-12-09 05:31:08 -05:00
|
|
|
case TLS_DH_anon_WITH_AES_256_CBC_SHA:
|
|
|
|
cipher = "ADH-AES-256-SHA";
|
2008-02-27 20:34:43 -05:00
|
|
|
break;
|
2011-11-27 15:33:54 -05:00
|
|
|
case TLS_RSA_WITH_AES_128_CBC_SHA256:
|
|
|
|
cipher = "AES-128-SHA256";
|
|
|
|
break;
|
2014-12-09 05:31:08 -05:00
|
|
|
case TLS_RSA_WITH_AES_256_CBC_SHA256:
|
|
|
|
cipher = "AES-256-SHA256";
|
|
|
|
break;
|
|
|
|
case TLS_DHE_RSA_WITH_AES_128_CBC_SHA256:
|
|
|
|
cipher = "DHE-RSA-AES-128-SHA256";
|
|
|
|
break;
|
|
|
|
case TLS_DHE_RSA_WITH_AES_256_CBC_SHA256:
|
|
|
|
cipher = "DHE-RSA-AES-256-SHA256";
|
|
|
|
break;
|
|
|
|
case TLS_DH_anon_WITH_AES_128_CBC_SHA256:
|
|
|
|
cipher = "ADH-AES-128-SHA256";
|
|
|
|
break;
|
|
|
|
case TLS_DH_anon_WITH_AES_256_CBC_SHA256:
|
|
|
|
cipher = "ADH-AES-256-SHA256";
|
|
|
|
break;
|
2008-02-27 20:34:43 -05:00
|
|
|
default:
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (os_strlcpy(buf, cipher, buflen) >= buflen)
|
|
|
|
return -1;
|
|
|
|
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;
|
|
|
|
|
|
|
|
if (tls_verify_hash_init(&conn->verify) < 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->session_ticket_included = 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;
|
|
|
|
|
2015-11-29 10:30:37 -05:00
|
|
|
pos = conn->client_hello_ext = os_malloc(4 + data_len);
|
2008-02-27 20:34:43 -05:00
|
|
|
if (pos == NULL)
|
|
|
|
return -1;
|
|
|
|
|
|
|
|
WPA_PUT_BE16(pos, ext_type);
|
|
|
|
pos += 2;
|
|
|
|
WPA_PUT_BE16(pos, data_len);
|
|
|
|
pos += 2;
|
|
|
|
os_memcpy(pos, data, data_len);
|
2015-11-29 10:30:37 -05:00
|
|
|
conn->client_hello_ext_len = 4 + data_len;
|
2008-02-27 20:34:43 -05:00
|
|
|
|
|
|
|
if (ext_type == TLS_EXT_PAC_OPAQUE) {
|
|
|
|
conn->session_ticket_included = 1;
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: Using session ticket");
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
2015-08-01 11:17:14 -04:00
|
|
|
* tlsv1_client_get_random - Get random data from TLS connection
|
2008-02-27 20:34:43 -05:00
|
|
|
* @conn: TLSv1 client connection data from tlsv1_client_init()
|
2015-08-01 11:17:14 -04:00
|
|
|
* @keys: Structure of random data (filled on success)
|
2008-02-27 20:34:43 -05:00
|
|
|
* Returns: 0 on success, -1 on failure
|
|
|
|
*/
|
2015-08-01 11:17:14 -04:00
|
|
|
int tlsv1_client_get_random(struct tlsv1_client *conn, struct tls_random *keys)
|
2008-02-27 20:34:43 -05:00
|
|
|
{
|
|
|
|
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;
|
|
|
|
}
|
|
|
|
|
|
|
|
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)
|
|
|
|
{
|
|
|
|
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;
|
2011-11-27 15:33:54 -05:00
|
|
|
suites[count++] = TLS_DH_anon_WITH_AES_256_CBC_SHA256;
|
2008-02-27 20:34:43 -05:00
|
|
|
suites[count++] = TLS_DH_anon_WITH_AES_256_CBC_SHA;
|
2011-11-27 15:33:54 -05:00
|
|
|
suites[count++] = TLS_DH_anon_WITH_AES_128_CBC_SHA256;
|
2008-02-27 20:34:43 -05:00
|
|
|
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;
|
2009-03-08 06:04:39 -04:00
|
|
|
|
|
|
|
/*
|
|
|
|
* Cisco AP (at least 350 and 1200 series) local authentication
|
|
|
|
* server does not know how to search cipher suites from the
|
|
|
|
* list and seem to require that the last entry in the list is
|
|
|
|
* the one that it wants to use. However, TLS specification
|
|
|
|
* requires the list to be in the client preference order. As a
|
2009-11-21 14:13:19 -05:00
|
|
|
* workaround, add anon-DH AES-128-SHA1 again at the end of the
|
2009-03-08 06:04:39 -04:00
|
|
|
* list to allow the Cisco code to find it.
|
|
|
|
*/
|
|
|
|
suites[count++] = TLS_DH_anon_WITH_AES_128_CBC_SHA;
|
2008-02-27 20:34:43 -05:00
|
|
|
conn->num_cipher_suites = count;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* tlsv1_client_set_cred - Set client credentials
|
|
|
|
* @conn: TLSv1 client connection data from tlsv1_client_init()
|
|
|
|
* @cred: Credentials from tlsv1_cred_alloc()
|
|
|
|
* Returns: 0 on success, -1 on failure
|
|
|
|
*
|
|
|
|
* On success, the client takes ownership of the credentials block and caller
|
|
|
|
* must not free it. On failure, caller is responsible for freeing the
|
|
|
|
* credential block.
|
|
|
|
*/
|
|
|
|
int tlsv1_client_set_cred(struct tlsv1_client *conn,
|
|
|
|
struct tlsv1_credentials *cred)
|
|
|
|
{
|
|
|
|
tlsv1_cred_free(conn->cred);
|
|
|
|
conn->cred = cred;
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
2015-11-29 12:48:17 -05:00
|
|
|
/**
|
|
|
|
* tlsv1_client_set_flags - Set connection flags
|
|
|
|
* @conn: TLSv1 client connection data from tlsv1_client_init()
|
|
|
|
* @flags: TLS_CONN_* bitfield
|
|
|
|
*/
|
|
|
|
void tlsv1_client_set_flags(struct tlsv1_client *conn, unsigned int flags)
|
2011-07-05 04:29:42 -04:00
|
|
|
{
|
2015-11-29 12:48:17 -05:00
|
|
|
conn->flags = flags;
|
2011-07-05 04:29:42 -04:00
|
|
|
}
|
|
|
|
|
|
|
|
|
2008-02-27 20:34:43 -05:00
|
|
|
void tlsv1_client_set_session_ticket_cb(struct tlsv1_client *conn,
|
|
|
|
tlsv1_client_session_ticket_cb cb,
|
|
|
|
void *ctx)
|
|
|
|
{
|
|
|
|
wpa_printf(MSG_DEBUG, "TLSv1: SessionTicket callback set %p (ctx %p)",
|
|
|
|
cb, ctx);
|
|
|
|
conn->session_ticket_cb = cb;
|
|
|
|
conn->session_ticket_cb_ctx = ctx;
|
|
|
|
}
|
2015-11-29 11:59:27 -05:00
|
|
|
|
|
|
|
|
|
|
|
void tlsv1_client_set_cb(struct tlsv1_client *conn,
|
|
|
|
void (*event_cb)(void *ctx, enum tls_event ev,
|
|
|
|
union tls_event_data *data),
|
|
|
|
void *cb_ctx,
|
|
|
|
int cert_in_cb)
|
|
|
|
{
|
|
|
|
conn->event_cb = event_cb;
|
|
|
|
conn->cb_ctx = cb_ctx;
|
|
|
|
conn->cert_in_cb = !!cert_in_cb;
|
|
|
|
}
|
2015-11-29 12:41:37 -05:00
|
|
|
|
|
|
|
|
|
|
|
int tlsv1_client_get_version(struct tlsv1_client *conn, char *buf,
|
|
|
|
size_t buflen)
|
|
|
|
{
|
|
|
|
if (!conn)
|
|
|
|
return -1;
|
|
|
|
switch (conn->rl.tls_version) {
|
|
|
|
case TLS_VERSION_1:
|
|
|
|
os_strlcpy(buf, "TLSv1", buflen);
|
|
|
|
break;
|
|
|
|
case TLS_VERSION_1_1:
|
|
|
|
os_strlcpy(buf, "TLSv1.1", buflen);
|
|
|
|
break;
|
|
|
|
case TLS_VERSION_1_2:
|
|
|
|
os_strlcpy(buf, "TLSv1.2", buflen);
|
|
|
|
break;
|
|
|
|
default:
|
|
|
|
return -1;
|
|
|
|
}
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|