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      1 /*
      2  * IEEE 802.1X-2004 Authenticator - EAPOL state machine
      3  * Copyright (c) 2002-2015, Jouni Malinen <j (at) 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 
     17 struct 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_sim_aka_result_ind;
     40 	int tnc;
     41 	struct wps_context *wps;
     42 	int fragment_size;
     43 	u16 pwd_group;
     44 	int pbc_in_m1;
     45 	const u8 *server_id;
     46 	size_t server_id_len;
     47 
     48 	/* Opaque context pointer to owner data for callback functions */
     49 	void *ctx;
     50 };
     51 
     52 struct eap_user;
     53 struct eap_server_erp_key;
     54 
     55 typedef enum {
     56 	EAPOL_LOGGER_DEBUG, EAPOL_LOGGER_INFO, EAPOL_LOGGER_WARNING
     57 } eapol_logger_level;
     58 
     59 enum eapol_event {
     60 	EAPOL_AUTH_SM_CHANGE,
     61 	EAPOL_AUTH_REAUTHENTICATE
     62 };
     63 
     64 struct eapol_auth_cb {
     65 	void (*eapol_send)(void *ctx, void *sta_ctx, u8 type, const u8 *data,
     66 			   size_t datalen);
     67 	void (*aaa_send)(void *ctx, void *sta_ctx, const u8 *data,
     68 			 size_t datalen);
     69 	void (*finished)(void *ctx, void *sta_ctx, int success, int preauth,
     70 			 int remediation);
     71 	int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
     72 			    int phase2, struct eap_user *user);
     73 	int (*sta_entry_alive)(void *ctx, const u8 *addr);
     74 	void (*logger)(void *ctx, const u8 *addr, eapol_logger_level level,
     75 		       const char *txt);
     76 	void (*set_port_authorized)(void *ctx, void *sta_ctx, int authorized);
     77 	void (*abort_auth)(void *ctx, void *sta_ctx);
     78 	void (*tx_key)(void *ctx, void *sta_ctx);
     79 	void (*eapol_event)(void *ctx, void *sta_ctx, enum eapol_event type);
     80 	struct eap_server_erp_key * (*erp_get_key)(void *ctx,
     81 						   const char *keyname);
     82 	int (*erp_add_key)(void *ctx, struct eap_server_erp_key *erp);
     83 };
     84 
     85 
     86 struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
     87 					     struct eapol_auth_cb *cb);
     88 void eapol_auth_deinit(struct eapol_authenticator *eapol);
     89 struct eapol_state_machine *
     90 eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr,
     91 		 int flags, const struct wpabuf *assoc_wps_ie,
     92 		 const struct wpabuf *assoc_p2p_ie, void *sta_ctx,
     93 		 const char *identity, const char *radius_cui);
     94 void eapol_auth_free(struct eapol_state_machine *sm);
     95 void eapol_auth_step(struct eapol_state_machine *sm);
     96 int eapol_auth_dump_state(struct eapol_state_machine *sm, char *buf,
     97 			  size_t buflen);
     98 int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx);
     99 void eapol_auth_reauthenticate(struct eapol_state_machine *sm);
    100 int eapol_auth_set_conf(struct eapol_state_machine *sm, const char *param,
    101 			const char *value);
    102 
    103 #endif /* EAPOL_AUTH_SM_H */
    104