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 flags; /* TLS_CONN_* bitfield */
33
34	unsigned int certificate_requested:1;
35	unsigned int session_resumed:1;
36	unsigned int session_ticket_included:1;
37	unsigned int use_session_ticket:1;
38	unsigned int cert_in_cb:1;
39	unsigned int ocsp_resp_received:1;
40
41	struct crypto_public_key *server_rsa_key;
42
43	struct tls_verify_hash verify;
44
45#define MAX_CIPHER_COUNT 30
46	u16 cipher_suites[MAX_CIPHER_COUNT];
47	size_t num_cipher_suites;
48
49	u16 prev_cipher_suite;
50
51	u8 *client_hello_ext;
52	size_t client_hello_ext_len;
53
54	/* The prime modulus used for Diffie-Hellman */
55	u8 *dh_p;
56	size_t dh_p_len;
57	/* The generator used for Diffie-Hellman */
58	u8 *dh_g;
59	size_t dh_g_len;
60	/* The server's Diffie-Hellman public value */
61	u8 *dh_ys;
62	size_t dh_ys_len;
63
64	struct tlsv1_credentials *cred;
65
66	tlsv1_client_session_ticket_cb session_ticket_cb;
67	void *session_ticket_cb_ctx;
68
69	struct wpabuf *partial_input;
70
71	void (*event_cb)(void *ctx, enum tls_event ev,
72			 union tls_event_data *data);
73	void *cb_ctx;
74
75	struct x509_certificate *server_cert;
76};
77
78
79void tls_alert(struct tlsv1_client *conn, u8 level, u8 description);
80void tlsv1_client_free_dh(struct tlsv1_client *conn);
81int tls_derive_pre_master_secret(u8 *pre_master_secret);
82int tls_derive_keys(struct tlsv1_client *conn,
83		    const u8 *pre_master_secret, size_t pre_master_secret_len);
84u8 * tls_send_client_hello(struct tlsv1_client *conn, size_t *out_len);
85u8 * tlsv1_client_send_alert(struct tlsv1_client *conn, u8 level,
86			     u8 description, size_t *out_len);
87u8 * tlsv1_client_handshake_write(struct tlsv1_client *conn, size_t *out_len,
88				  int no_appl_data);
89int tlsv1_client_process_handshake(struct tlsv1_client *conn, u8 ct,
90				   const u8 *buf, size_t *len,
91				   u8 **out_data, size_t *out_len);
92
93enum tls_ocsp_result {
94	TLS_OCSP_NO_RESPONSE, TLS_OCSP_INVALID, TLS_OCSP_GOOD, TLS_OCSP_REVOKED
95};
96
97enum tls_ocsp_result tls_process_ocsp_response(struct tlsv1_client *conn,
98					       const u8 *resp, size_t len);
99
100#endif /* TLSV1_CLIENT_I_H */
101