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eapol_supp_sm.c
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eapol_supp_sm.h
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Editing: eapol_supp_sm.h
/* * EAPOL supplicant state machines * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi> * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #ifndef EAPOL_SUPP_SM_H #define EAPOL_SUPP_SM_H #include "common/defs.h" struct tls_cert_data; 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; /** * external_sim - Use external processing for SIM/USIM operations */ int external_sim; #define EAPOL_LOCAL_WPS_IN_USE BIT(0) #define EAPOL_PEER_IS_WPS20_AP BIT(1) /** * wps - Whether this connection is used for WPS */ int wps; }; struct eapol_sm; struct wpa_config_blob; enum eapol_supp_result { EAPOL_SUPP_RESULT_FAILURE, EAPOL_SUPP_RESULT_SUCCESS, EAPOL_SUPP_RESULT_EXPECTED_FAILURE }; /** * 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 * @result: 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, enum eapol_supp_result result, 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; /** * openssl_ciphers - OpenSSL cipher string * * This is an OpenSSL specific configuration option for configuring the * default ciphers. If not set, "DEFAULT:!EXP:!LOW" is used as the * default. */ const char *openssl_ciphers; /** * wps - WPS context data * * This is only used by EAP-WSC and can be left %NULL if not available. */ struct wps_context *wps; /** * eap_param_needed - Notify that EAP parameter is needed * @ctx: Callback context (ctx) * @field: Field indicator (e.g., WPA_CTRL_REQ_EAP_IDENTITY) * @txt: User readable text describing the required parameter */ void (*eap_param_needed)(void *ctx, enum wpa_ctrl_req_type field, const char *txt); /** * port_cb - Set port authorized/unauthorized callback (optional) * @ctx: Callback context (ctx) * @authorized: Whether the supplicant port is now in authorized state */ void (*port_cb)(void *ctx, int authorized); /** * cert_cb - Notification of a peer certificate * @ctx: Callback context (ctx) * @cert: Certificate information * @cert_hash: SHA-256 hash of the certificate */ void (*cert_cb)(void *ctx, struct tls_cert_data *cert, const char *cert_hash); /** * cert_in_cb - Include server certificates in callback */ int cert_in_cb; /** * status_cb - Notification of a change in EAP status * @ctx: Callback context (ctx) * @status: Step in the process of EAP authentication * @parameter: Step-specific parameter, e.g., EAP method name */ void (*status_cb)(void *ctx, const char *status, const char *parameter); /** * eap_error_cb - Notification of EAP method error * @ctx: Callback context (ctx) * @error_code: EAP method error code */ void (*eap_error_cb)(void *ctx, int error_code); #ifdef CONFIG_EAP_PROXY /** * eap_proxy_cb - Callback signifying any updates from eap_proxy * @ctx: eapol_ctx from eap_peer_sm_init() call */ void (*eap_proxy_cb)(void *ctx); /** * eap_proxy_notify_sim_status - Notification of SIM status change * @ctx: eapol_ctx from eap_peer_sm_init() call * @status: One of enum value from sim_state */ void (*eap_proxy_notify_sim_status)(void *ctx, enum eap_proxy_sim_state sim_state); #endif /* CONFIG_EAP_PROXY */ /** * set_anon_id - Set or add anonymous identity * @ctx: eapol_ctx from eap_peer_sm_init() call * @id: Anonymous identity (e.g., EAP-SIM pseudonym) * @len: Length of anonymous identity in octets */ void (*set_anon_id)(void *ctx, const u8 *id, size_t len); }; struct eap_peer_config; struct ext_password_data; #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 eap_peer_config *config, const struct eapol_config *conf); int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len); const u8 * eapol_sm_get_session_id(struct eapol_sm *sm, 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); 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, int in_eapol_sm); void eapol_sm_invalidate_cached_session(struct eapol_sm *sm); const char * eapol_sm_get_method_name(struct eapol_sm *sm); void eapol_sm_set_ext_pw_ctx(struct eapol_sm *sm, struct ext_password_data *ext); int eapol_sm_failed(struct eapol_sm *sm); void eapol_sm_erp_flush(struct eapol_sm *sm); struct wpabuf * eapol_sm_build_erp_reauth_start(struct eapol_sm *sm); void eapol_sm_process_erp_finish(struct eapol_sm *sm, const u8 *buf, size_t len); int eapol_sm_get_eap_proxy_imsi(void *ctx, int sim_num, char *imsi, size_t *len); int eapol_sm_update_erp_next_seq_num(struct eapol_sm *sm, u16 next_seq_num); int eapol_sm_get_erp_info(struct eapol_sm *sm, struct eap_peer_config *config, const u8 **username, size_t *username_len, const u8 **realm, size_t *realm_len, u16 *erp_next_seq_num, const u8 **rrk, size_t *rrk_len); #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 eap_peer_config *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 const u8 * eapol_sm_get_session_id(struct eapol_sm *sm, size_t *len) { return NULL; } static inline void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff) { } static inline void eapol_sm_notify_cached(struct eapol_sm *sm) { } static inline void eapol_sm_notify_pmkid_attempt(struct eapol_sm *sm) { } #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, int in_eapol_sm) { } static inline void eapol_sm_invalidate_cached_session(struct eapol_sm *sm) { } static inline const char * eapol_sm_get_method_name(struct eapol_sm *sm) { return NULL; } static inline void eapol_sm_set_ext_pw_ctx(struct eapol_sm *sm, struct ext_password_data *ext) { } static inline int eapol_sm_failed(struct eapol_sm *sm) { return 0; } static inline void eapol_sm_erp_flush(struct eapol_sm *sm) { } static inline struct wpabuf * eapol_sm_build_erp_reauth_start(struct eapol_sm *sm) { return NULL; } static inline void eapol_sm_process_erp_finish(struct eapol_sm *sm, const u8 *buf, size_t len) { } static inline int eapol_sm_update_erp_next_seq_num(struct eapol_sm *sm, u16 next_seq_num) { return -1; } static inline int eapol_sm_get_erp_info(struct eapol_sm *sm, struct eap_peer_config *config, const u8 **username, size_t *username_len, const u8 **realm, size_t *realm_len, u16 *erp_next_seq_num, const u8 **rrk, size_t *rrk_len) { return -1; } #endif /* IEEE8021X_EAPOL */ #endif /* EAPOL_SUPP_SM_H */
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