eapol_auth_sm.h

Go to the documentation of this file.

/*
 * IEEE 802.1X-2004 Authenticator - EAPOL state machine
 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * Alternatively, this software may be distributed under the terms of BSD
 * license.
 *
 * See README and COPYING for more details.
 */

#ifndef EAPOL_AUTH_SM_H
#define EAPOL_AUTH_SM_H

#define EAPOL_SM_PREAUTH BIT(0)
#define EAPOL_SM_WAIT_START BIT(1)
#define EAPOL_SM_USES_WPA BIT(2)
#define EAPOL_SM_FROM_PMKSA_CACHE BIT(3)

struct eapol_auth_config {
        int eap_reauth_period;
        int wpa;
        int individual_wep_key_len;
        int eap_server;
        void *ssl_ctx;
        void *msg_ctx;
        void *eap_sim_db_priv;
        char *eap_req_id_text; /* a copy of this will be allocated */
        size_t eap_req_id_text_len;
        u8 *pac_opaque_encr_key;
        u8 *eap_fast_a_id;
        size_t eap_fast_a_id_len;
        char *eap_fast_a_id_info;
        int eap_fast_prov;
        int pac_key_lifetime;
        int pac_key_refresh_time;
        int eap_sim_aka_result_ind;
        int tnc;
        struct wps_context *wps;

        /* Opaque context pointer to owner data for callback functions */
        void *ctx;
};

struct eap_user;

typedef enum {
        EAPOL_LOGGER_DEBUG, EAPOL_LOGGER_INFO, EAPOL_LOGGER_WARNING
} eapol_logger_level;

enum eapol_event {
        EAPOL_AUTH_SM_CHANGE,
        EAPOL_AUTH_REAUTHENTICATE
};

struct eapol_auth_cb {
        void (*eapol_send)(void *ctx, void *sta_ctx, u8 type, const u8 *data,
                           size_t datalen);
        void (*aaa_send)(void *ctx, void *sta_ctx, const u8 *data,
                         size_t datalen);
        void (*finished)(void *ctx, void *sta_ctx, int success, int preauth);
        int (*get_eap_user)(void *ctx, const u8 *identity, size_t identity_len,
                            int phase2, struct eap_user *user);
        int (*sta_entry_alive)(void *ctx, const u8 *addr);
        void (*logger)(void *ctx, const u8 *addr, eapol_logger_level level,
                       const char *txt);
        void (*set_port_authorized)(void *ctx, void *sta_ctx, int authorized);
        void (*abort_auth)(void *ctx, void *sta_ctx);
        void (*tx_key)(void *ctx, void *sta_ctx);
        void (*eapol_event)(void *ctx, void *sta_ctx, enum eapol_event type);
};


struct eapol_authenticator * eapol_auth_init(struct eapol_auth_config *conf,
                                             struct eapol_auth_cb *cb);
void eapol_auth_deinit(struct eapol_authenticator *eapol);
struct eapol_state_machine *
eapol_auth_alloc(struct eapol_authenticator *eapol, const u8 *addr,
                 int flags, const struct wpabuf *assoc_wps_ie, void *sta_ctx);
void eapol_auth_free(struct eapol_state_machine *sm);
void eapol_auth_step(struct eapol_state_machine *sm);
void eapol_auth_dump_state(FILE *f, const char *prefix,
                           struct eapol_state_machine *sm);
int eapol_auth_eap_pending_cb(struct eapol_state_machine *sm, void *ctx);

#endif /* EAPOL_AUTH_SM_H */