eap.h revision c5ec7f57ead87efa365800228aa0b09a12d9e6c4 
1/*
2 * hostapd / EAP Full Authenticator state machine (RFC 4137)
3 * Copyright (c) 2004-2007, 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 EAP_H
10#define EAP_H
11
12#include "common/defs.h"
13#include "eap_common/eap_defs.h"
14#include "eap_server/eap_methods.h"
15#include "wpabuf.h"
16
17struct eap_sm;
18
19#define EAP_TTLS_AUTH_PAP 1
20#define EAP_TTLS_AUTH_CHAP 2
21#define EAP_TTLS_AUTH_MSCHAP 4
22#define EAP_TTLS_AUTH_MSCHAPV2 8
23
24struct eap_user {
25	struct {
26		int vendor;
27		u32 method;
28	} methods[EAP_MAX_METHODS];
29	u8 *password;
30	size_t password_len;
31	int password_hash; /* whether password is hashed with
32			    * nt_password_hash() */
33	int phase2;
34	int force_version;
35	int ttls_auth; /* bitfield of
36			* EAP_TTLS_AUTH_{PAP,CHAP,MSCHAP,MSCHAPV2} */
37};
38
39struct eap_eapol_interface {
40	/* Lower layer to full authenticator variables */
41	Boolean eapResp; /* shared with EAPOL Backend Authentication */
42	struct wpabuf *eapRespData;
43	Boolean portEnabled;
44	int retransWhile;
45	Boolean eapRestart; /* shared with EAPOL Authenticator PAE */
46	int eapSRTT;
47	int eapRTTVAR;
48
49	/* Full authenticator to lower layer variables */
50	Boolean eapReq; /* shared with EAPOL Backend Authentication */
51	Boolean eapNoReq; /* shared with EAPOL Backend Authentication */
52	Boolean eapSuccess;
53	Boolean eapFail;
54	Boolean eapTimeout;
55	struct wpabuf *eapReqData;
56	u8 *eapKeyData;
57	size_t eapKeyDataLen;
58	Boolean eapKeyAvailable; /* called keyAvailable in IEEE 802.1X-2004 */
59
60	/* AAA interface to full authenticator variables */
61	Boolean aaaEapReq;
62	Boolean aaaEapNoReq;
63	Boolean aaaSuccess;
64	Boolean aaaFail;
65	struct wpabuf *aaaEapReqData;
66	u8 *aaaEapKeyData;
67	size_t aaaEapKeyDataLen;
68	Boolean aaaEapKeyAvailable;
69	int aaaMethodTimeout;
70
71	/* Full authenticator to AAA interface variables */
72	Boolean aaaEapResp;
73	struct wpabuf *aaaEapRespData;
74	/* aaaIdentity -> eap_get_identity() */
75	Boolean aaaTimeout;
76};
77
78struct eapol_callbacks {
79	int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
80			    int phase2, struct eap_user *user);
81	const char * (*get_eap_req_id_text)(void *ctx, size_t *len);
82};
83
84struct eap_config {
85	void *ssl_ctx;
86	void *msg_ctx;
87	void *eap_sim_db_priv;
88	Boolean backend_auth;
89	int eap_server;
90	u16 pwd_group;
91	u8 *pac_opaque_encr_key;
92	u8 *eap_fast_a_id;
93	size_t eap_fast_a_id_len;
94	char *eap_fast_a_id_info;
95	int eap_fast_prov;
96	int pac_key_lifetime;
97	int pac_key_refresh_time;
98	int eap_sim_aka_result_ind;
99	int tnc;
100	struct wps_context *wps;
101	const struct wpabuf *assoc_wps_ie;
102	const struct wpabuf *assoc_p2p_ie;
103	const u8 *peer_addr;
104	int fragment_size;
105
106	int pbc_in_m1;
107};
108
109
110struct eap_sm * eap_server_sm_init(void *eapol_ctx,
111				   struct eapol_callbacks *eapol_cb,
112				   struct eap_config *eap_conf);
113void eap_server_sm_deinit(struct eap_sm *sm);
114int eap_server_sm_step(struct eap_sm *sm);
115void eap_sm_notify_cached(struct eap_sm *sm);
116void eap_sm_pending_cb(struct eap_sm *sm);
117int eap_sm_method_pending(struct eap_sm *sm);
118const u8 * eap_get_identity(struct eap_sm *sm, size_t *len);
119struct eap_eapol_interface * eap_get_interface(struct eap_sm *sm);
120void eap_server_clear_identity(struct eap_sm *sm);
121
122#endif /* EAP_H */
123