1/*
2 * TLSv1 client - internal structures
3 * Copyright (c) 2006-2011, Jouni Malinen <j@w1.fi>
4 *
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
7 */
8
9#ifndef TLSV1_CLIENT_I_H
10#define TLSV1_CLIENT_I_H
11
12struct tlsv1_client {
13	enum {
14		CLIENT_HELLO, SERVER_HELLO, SERVER_CERTIFICATE,
15		SERVER_KEY_EXCHANGE, SERVER_CERTIFICATE_REQUEST,
16		SERVER_HELLO_DONE, CLIENT_KEY_EXCHANGE, CHANGE_CIPHER_SPEC,
17		SERVER_CHANGE_CIPHER_SPEC, SERVER_FINISHED, ACK_FINISHED,
18		ESTABLISHED, FAILED
19	} state;
20
21	struct tlsv1_record_layer rl;
22
23	u8 session_id[TLS_SESSION_ID_MAX_LEN];
24	size_t session_id_len;
25	u8 client_random[TLS_RANDOM_LEN];
26	u8 server_random[TLS_RANDOM_LEN];
27	u8 master_secret[TLS_MASTER_SECRET_LEN];
28
29	u8 alert_level;
30	u8 alert_description;
31
32	unsigned int certificate_requested:1;
33	unsigned int session_resumed:1;
34	unsigned int session_ticket_included:1;
35	unsigned int use_session_ticket:1;
36	unsigned int disable_time_checks:1;
37
38	struct crypto_public_key *server_rsa_key;
39
40	struct tls_verify_hash verify;
41
42#define MAX_CIPHER_COUNT 30
43	u16 cipher_suites[MAX_CIPHER_COUNT];
44	size_t num_cipher_suites;
45
46	u16 prev_cipher_suite;
47
48	u8 *client_hello_ext;
49	size_t client_hello_ext_len;
50
51	/* The prime modulus used for Diffie-Hellman */
52	u8 *dh_p;
53	size_t dh_p_len;
54	/* The generator used for Diffie-Hellman */
55	u8 *dh_g;
56	size_t dh_g_len;
57	/* The server's Diffie-Hellman public value */
58	u8 *dh_ys;
59	size_t dh_ys_len;
60
61	struct tlsv1_credentials *cred;
62
63	tlsv1_client_session_ticket_cb session_ticket_cb;
64	void *session_ticket_cb_ctx;
65
66	struct wpabuf *partial_input;
67};
68
69
70void tls_alert(struct tlsv1_client *conn, u8 level, u8 description);
71void tlsv1_client_free_dh(struct tlsv1_client *conn);
72int tls_derive_pre_master_secret(u8 *pre_master_secret);
73int tls_derive_keys(struct tlsv1_client *conn,
74		    const u8 *pre_master_secret, size_t pre_master_secret_len);
75u8 * tls_send_client_hello(struct tlsv1_client *conn, size_t *out_len);
76u8 * tlsv1_client_send_alert(struct tlsv1_client *conn, u8 level,
77			     u8 description, size_t *out_len);
78u8 * tlsv1_client_handshake_write(struct tlsv1_client *conn, size_t *out_len,
79				  int no_appl_data);
80int tlsv1_client_process_handshake(struct tlsv1_client *conn, u8 ct,
81				   const u8 *buf, size_t *len,
82				   u8 **out_data, size_t *out_len);
83
84#endif /* TLSV1_CLIENT_I_H */
85