1/*
2 * IEEE 802.1X-2004 Authenticator - EAPOL state machine
3 * Copyright (c) 2002-2015, 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 EAPOL_AUTH_SM_H
10#define EAPOL_AUTH_SM_H
11
12#define EAPOL_SM_PREAUTH BIT(0)
13#define EAPOL_SM_WAIT_START BIT(1)
14#define EAPOL_SM_USES_WPA BIT(2)
15#define EAPOL_SM_FROM_PMKSA_CACHE BIT(3)
16
17struct eapol_auth_config {
18	int eap_reauth_period;
19	int wpa;
20	int individual_wep_key_len;
21	int eap_server;
22	void *ssl_ctx;
23	void *msg_ctx;
24	void *eap_sim_db_priv;
25	char *eap_req_id_text; /* a copy of this will be allocated */
26	size_t eap_req_id_text_len;
27	int erp_send_reauth_start;
28	char *erp_domain; /* a copy of this will be allocated */
29	int erp; /* Whether ERP is enabled on authentication server */
30	unsigned int tls_session_lifetime;
31	unsigned int tls_flags;
32	u8 *pac_opaque_encr_key;
33	u8 *eap_fast_a_id;
34	size_t eap_fast_a_id_len;
35	char *eap_fast_a_id_info;
36	int eap_fast_prov;
37	int pac_key_lifetime;
38	int pac_key_refresh_time;
39	int eap_teap_auth;
40	int eap_teap_pac_no_inner;
41	int eap_sim_aka_result_ind;
42	int eap_sim_id;
43	int tnc;
44	struct wps_context *wps;
45	int fragment_size;
46	u16 pwd_group;
47	int pbc_in_m1;
48	const u8 *server_id;
49	size_t server_id_len;
50
51	/* Opaque context pointer to owner data for callback functions */
52	void *ctx;
53};
54
55struct eap_user;
56struct eap_server_erp_key;
57
58typedef enum {
59	EAPOL_LOGGER_DEBUG, EAPOL_LOGGER_INFO, EAPOL_LOGGER_WARNING
60} eapol_logger_level;
61
62enum eapol_event {
63	EAPOL_AUTH_SM_CHANGE,
64	EAPOL_AUTH_REAUTHENTICATE
65};
66
67struct eapol_auth_cb {
68	void (*eapol_send)(void *ctx, void *sta_ctx, u8 type, const u8 *data,
69			   size_t datalen);
70	void (*aaa_send)(void *ctx, void *sta_ctx, const u8 *data,
71			 size_t datalen);
72	void (*finished)(void *ctx, void *sta_ctx, int success, int preauth,
73			 int remediation);
74	int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
75			    int phase2, struct eap_user *user);
76	int (*sta_entry_alive)(void *ctx, const u8 *addr);
77	void (*logger)(void *ctx, const u8 *addr, eapol_logger_level level,
78		       const char *txt);
79	void (*set_port_authorized)(void *ctx, void *sta_ctx, int authorized);
80	void (*abort_auth)(void *ctx, void *sta_ctx);
81	void (*tx_key)(void *ctx, void *sta_ctx);
82	void (*eapol_event)(void *ctx, void *sta_ctx, enum eapol_event type);
83	struct eap_server_erp_key * (*erp_get_key)(void *ctx,
84						   const char *keyname);
85	int (*erp_add_key)(void *ctx, struct eap_server_erp_key *erp);
86};
87
88
89struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
90					     struct eapol_auth_cb *cb);
91void eapol_auth_deinit(struct eapol_authenticator *eapol);
92struct eapol_state_machine *
93eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr,
94		 int flags, const struct wpabuf *assoc_wps_ie,
95		 const struct wpabuf *assoc_p2p_ie, void *sta_ctx,
96		 const char *identity, const char *radius_cui);
97void eapol_auth_free(struct eapol_state_machine *sm);
98void eapol_auth_step(struct eapol_state_machine *sm);
99int eapol_auth_dump_state(struct eapol_state_machine *sm, char *buf,
100			  size_t buflen);
101int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx);
102void eapol_auth_reauthenticate(struct eapol_state_machine *sm);
103int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
104			const char *value);
105
106#endif /* EAPOL_AUTH_SM_H */
107