/* * WPA Supplicant / EAPOL state machines * Copyright (c) 2004-2005, Jouni Malinen * * 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_SM_H #define EAPOL_SM_H #include "defs.h" typedef enum { Unauthorized, Authorized } PortStatus; typedef enum { Auto, ForceUnauthorized, ForceAuthorized } PortControl; /** * struct eapol_config - Per network configuration for EAPOL state machines */ struct eapol_config { /** * accept_802_1x_keys - Accept IEEE 802.1X (non-WPA) EAPOL-Key frames * * This variable should be set to 1 when using EAPOL state machines * with non-WPA security policy to generate dynamic WEP keys. When * using WPA, this should be set to 0 so that WPA state machine can * process the EAPOL-Key frames. */ int accept_802_1x_keys; #define EAPOL_REQUIRE_KEY_UNICAST BIT(0) #define EAPOL_REQUIRE_KEY_BROADCAST BIT(1) /** * required_keys - Which EAPOL-Key packets are required * * This variable determines which EAPOL-Key packets are required before * marking connection authenticated. This is a bit field of * EAPOL_REQUIRE_KEY_UNICAST and EAPOL_REQUIRE_KEY_BROADCAST flags. */ int required_keys; /** * fast_reauth - Whether fast EAP reauthentication is enabled */ int fast_reauth; /** * workaround - Whether EAP workarounds are enabled */ unsigned int workaround; /** * eap_disabled - Whether EAP is disabled */ int eap_disabled; }; struct eapol_sm; struct wpa_config_blob; /** * struct eapol_ctx - Global (for all networks) EAPOL state machine context */ struct eapol_ctx { /** * ctx - Pointer to arbitrary upper level context */ void *ctx; /** * preauth - IEEE 802.11i/RSN pre-authentication * * This EAPOL state machine is used for IEEE 802.11i/RSN * pre-authentication */ int preauth; /** * cb - Function to be called when EAPOL negotiation has been completed * @eapol: Pointer to EAPOL state machine data * @success: Whether the authentication was completed successfully * @ctx: Pointer to context data (cb_ctx) * * This optional callback function will be called when the EAPOL * authentication has been completed. This allows the owner of the * EAPOL state machine to process the key and terminate the EAPOL state * machine. Currently, this is used only in RSN pre-authentication. */ void (*cb)(struct eapol_sm *eapol, int success, void *ctx); /** * cb_ctx - Callback context for cb() */ void *cb_ctx; /** * msg_ctx - Callback context for wpa_msg() calls */ void *msg_ctx; /** * scard_ctx - Callback context for PC/SC scard_*() function calls * * This context can be updated with eapol_sm_register_scard_ctx(). */ void *scard_ctx; /** * eapol_send_ctx - Callback context for eapol_send() calls */ void *eapol_send_ctx; /** * eapol_done_cb - Function to be called at successful completion * @ctx: Callback context (ctx) * * This function is called at the successful completion of EAPOL * authentication. If dynamic WEP keys are used, this is called only * after all the expected keys have been received. */ void (*eapol_done_cb)(void *ctx); /** * eapol_send - Send EAPOL packets * @ctx: Callback context (eapol_send_ctx) * @type: EAPOL type (IEEE802_1X_TYPE_*) * @buf: Pointer to EAPOL payload * @len: Length of the EAPOL payload * Returns: 0 on success, -1 on failure */ int (*eapol_send)(void *ctx, int type, const u8 *buf, size_t len); /** * set_wep_key - Configure WEP keys * @ctx: Callback context (ctx) * @unicast: Non-zero = unicast, 0 = multicast/broadcast key * @keyidx: Key index (0..3) * @key: WEP key * @keylen: Length of the WEP key * Returns: 0 on success, -1 on failure */ int (*set_wep_key)(void *ctx, int unicast, int keyidx, const u8 *key, size_t keylen); /** * set_config_blob - Set or add a named configuration blob * @ctx: Callback context (ctx) * @blob: New value for the blob * * Adds a new configuration blob or replaces the current value of an * existing blob. */ void (*set_config_blob)(void *ctx, struct wpa_config_blob *blob); /** * get_config_blob - Get a named configuration blob * @ctx: Callback context (ctx) * @name: Name of the blob * Returns: Pointer to blob data or %NULL if not found */ const struct wpa_config_blob * (*get_config_blob)(void *ctx, const char *name); /** * aborted_cached - Notify that cached PMK attempt was aborted * @ctx: Callback context (ctx) */ void (*aborted_cached)(void *ctx); /** * opensc_engine_path - Path to the OpenSSL engine for opensc * * This is an OpenSSL specific configuration option for loading OpenSC * engine (engine_opensc.so); if %NULL, this engine is not loaded. */ const char *opensc_engine_path; /** * pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11 * * This is an OpenSSL specific configuration option for loading PKCS#11 * engine (engine_pkcs11.so); if %NULL, this engine is not loaded. */ const char *pkcs11_engine_path; /** * pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module * * This is an OpenSSL specific configuration option for configuring * path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this * module is not loaded. */ const char *pkcs11_module_path; }; struct wpa_ssid; #ifdef IEEE8021X_EAPOL struct eapol_sm *eapol_sm_init(struct eapol_ctx *ctx); void eapol_sm_deinit(struct eapol_sm *sm); void eapol_sm_step(struct eapol_sm *sm); int eapol_sm_get_status(struct eapol_sm *sm, char *buf, size_t buflen, int verbose); int eapol_sm_get_mib(struct eapol_sm *sm, char *buf, size_t buflen); void eapol_sm_configure(struct eapol_sm *sm, int heldPeriod, int authPeriod, int startPeriod, int maxStart); int eapol_sm_rx_eapol(struct eapol_sm *sm, const u8 *src, const u8 *buf, size_t len); void eapol_sm_notify_tx_eapol_key(struct eapol_sm *sm); void eapol_sm_notify_portEnabled(struct eapol_sm *sm, Boolean enabled); void eapol_sm_notify_portValid(struct eapol_sm *sm, Boolean valid); void eapol_sm_notify_eap_success(struct eapol_sm *sm, Boolean success); void eapol_sm_notify_eap_fail(struct eapol_sm *sm, Boolean fail); void eapol_sm_notify_config(struct eapol_sm *sm, struct wpa_ssid *config, const struct eapol_config *conf); int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len); void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff); void eapol_sm_notify_cached(struct eapol_sm *sm); void eapol_sm_notify_pmkid_attempt(struct eapol_sm *sm, int attempt); void eapol_sm_register_scard_ctx(struct eapol_sm *sm, void *ctx); void eapol_sm_notify_portControl(struct eapol_sm *sm, PortControl portControl); void eapol_sm_notify_ctrl_attached(struct eapol_sm *sm); void eapol_sm_notify_ctrl_response(struct eapol_sm *sm); void eapol_sm_request_reauth(struct eapol_sm *sm); void eapol_sm_notify_lower_layer_success(struct eapol_sm *sm); #else /* IEEE8021X_EAPOL */ static inline struct eapol_sm *eapol_sm_init(struct eapol_ctx *ctx) { free(ctx); return (struct eapol_sm *) 1; } static inline void eapol_sm_deinit(struct eapol_sm *sm) { } static inline void eapol_sm_step(struct eapol_sm *sm) { } static inline int eapol_sm_get_status(struct eapol_sm *sm, char *buf, size_t buflen, int verbose) { return 0; } static inline int eapol_sm_get_mib(struct eapol_sm *sm, char *buf, size_t buflen) { return 0; } static inline void eapol_sm_configure(struct eapol_sm *sm, int heldPeriod, int authPeriod, int startPeriod, int maxStart) { } static inline int eapol_sm_rx_eapol(struct eapol_sm *sm, const u8 *src, const u8 *buf, size_t len) { return 0; } static inline void eapol_sm_notify_tx_eapol_key(struct eapol_sm *sm) { } static inline void eapol_sm_notify_portEnabled(struct eapol_sm *sm, Boolean enabled) { } static inline void eapol_sm_notify_portValid(struct eapol_sm *sm, Boolean valid) { } static inline void eapol_sm_notify_eap_success(struct eapol_sm *sm, Boolean success) { } static inline void eapol_sm_notify_eap_fail(struct eapol_sm *sm, Boolean fail) { } static inline void eapol_sm_notify_config(struct eapol_sm *sm, struct wpa_ssid *config, struct eapol_config *conf) { } static inline int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len) { return -1; } static inline void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff) { } static inline void eapol_sm_notify_cached(struct eapol_sm *sm) { } #define eapol_sm_notify_pmkid_attempt(sm, attempt) do { } while (0) #define eapol_sm_register_scard_ctx(sm, ctx) do { } while (0) static inline void eapol_sm_notify_portControl(struct eapol_sm *sm, PortControl portControl) { } static inline void eapol_sm_notify_ctrl_attached(struct eapol_sm *sm) { } static inline void eapol_sm_notify_ctrl_response(struct eapol_sm *sm) { } static inline void eapol_sm_request_reauth(struct eapol_sm *sm) { } static inline void eapol_sm_notify_lower_layer_success(struct eapol_sm *sm) { } #endif /* IEEE8021X_EAPOL */ #endif /* EAPOL_SM_H */