eap_tls_common.h revision 189261 
1/*
2 * hostapd / EAP-TLS/PEAP/TTLS/FAST common functions
3 * Copyright (c) 2004-2008, Jouni Malinen <j@w1.fi>
4 *
5 * This program is free software; you can redistribute it and/or modify
6 * it under the terms of the GNU General Public License version 2 as
7 * published by the Free Software Foundation.
8 *
9 * Alternatively, this software may be distributed under the terms of BSD
10 * license.
11 *
12 * See README and COPYING for more details.
13 */
14
15#ifndef EAP_TLS_COMMON_H
16#define EAP_TLS_COMMON_H
17
18struct eap_ssl_data {
19	struct tls_connection *conn;
20
21	size_t tls_out_limit;
22
23	int phase2;
24
25	struct eap_sm *eap;
26
27	enum { MSG, FRAG_ACK, WAIT_FRAG_ACK } state;
28	struct wpabuf *in_buf;
29	struct wpabuf *out_buf;
30	size_t out_used;
31	struct wpabuf tmpbuf;
32};
33
34
35/* EAP TLS Flags */
36#define EAP_TLS_FLAGS_LENGTH_INCLUDED 0x80
37#define EAP_TLS_FLAGS_MORE_FRAGMENTS 0x40
38#define EAP_TLS_FLAGS_START 0x20
39#define EAP_TLS_VERSION_MASK 0x07
40
41 /* could be up to 128 bytes, but only the first 64 bytes are used */
42#define EAP_TLS_KEY_LEN 64
43
44
45int eap_server_tls_ssl_init(struct eap_sm *sm, struct eap_ssl_data *data,
46			    int verify_peer);
47void eap_server_tls_ssl_deinit(struct eap_sm *sm, struct eap_ssl_data *data);
48u8 * eap_server_tls_derive_key(struct eap_sm *sm, struct eap_ssl_data *data,
49			       char *label, size_t len);
50struct wpabuf * eap_server_tls_build_msg(struct eap_ssl_data *data,
51					 int eap_type, int version, u8 id);
52struct wpabuf * eap_server_tls_build_ack(u8 id, int eap_type, int version);
53int eap_server_tls_phase1(struct eap_sm *sm, struct eap_ssl_data *data);
54struct wpabuf * eap_server_tls_encrypt(struct eap_sm *sm,
55				       struct eap_ssl_data *data,
56				       const u8 *plain, size_t plain_len);
57int eap_server_tls_process(struct eap_sm *sm, struct eap_ssl_data *data,
58			   struct wpabuf *respData, void *priv, int eap_type,
59			   int (*proc_version)(struct eap_sm *sm, void *priv,
60					       int peer_version),
61			   void (*proc_msg)(struct eap_sm *sm, void *priv,
62					    const struct wpabuf *respData));
63
64#endif /* EAP_TLS_COMMON_H */
65