2 * EAPOL supplicant state machines
3 * Copyright (c) 2004-2012, Jouni Malinen <j@w1.fi>
5 * This software may be distributed under the terms of the BSD license.
6 * See README for more details.
9 #ifndef EAPOL_SUPP_SM_H
10 #define EAPOL_SUPP_SM_H
12 #include "common/defs.h"
14 typedef enum { Unauthorized, Authorized } PortStatus;
15 typedef enum { Auto, ForceUnauthorized, ForceAuthorized } PortControl;
18 * struct eapol_config - Per network configuration for EAPOL state machines
22 * accept_802_1x_keys - Accept IEEE 802.1X (non-WPA) EAPOL-Key frames
24 * This variable should be set to 1 when using EAPOL state machines
25 * with non-WPA security policy to generate dynamic WEP keys. When
26 * using WPA, this should be set to 0 so that WPA state machine can
27 * process the EAPOL-Key frames.
29 int accept_802_1x_keys;
31 #define EAPOL_REQUIRE_KEY_UNICAST BIT(0)
32 #define EAPOL_REQUIRE_KEY_BROADCAST BIT(1)
34 * required_keys - Which EAPOL-Key packets are required
36 * This variable determines which EAPOL-Key packets are required before
37 * marking connection authenticated. This is a bit field of
38 * EAPOL_REQUIRE_KEY_UNICAST and EAPOL_REQUIRE_KEY_BROADCAST flags.
43 * fast_reauth - Whether fast EAP reauthentication is enabled
48 * workaround - Whether EAP workarounds are enabled
50 unsigned int workaround;
53 * eap_disabled - Whether EAP is disabled
58 * external_sim - Use external processing for SIM/USIM operations
62 #define EAPOL_LOCAL_WPS_IN_USE BIT(0)
63 #define EAPOL_PEER_IS_WPS20_AP BIT(1)
65 * wps - Whether this connection is used for WPS
71 struct wpa_config_blob;
73 enum eapol_supp_result {
74 EAPOL_SUPP_RESULT_FAILURE,
75 EAPOL_SUPP_RESULT_SUCCESS,
76 EAPOL_SUPP_RESULT_EXPECTED_FAILURE
80 * struct eapol_ctx - Global (for all networks) EAPOL state machine context
84 * ctx - Pointer to arbitrary upper level context
89 * preauth - IEEE 802.11i/RSN pre-authentication
91 * This EAPOL state machine is used for IEEE 802.11i/RSN
97 * cb - Function to be called when EAPOL negotiation has been completed
98 * @eapol: Pointer to EAPOL state machine data
99 * @result: Whether the authentication was completed successfully
100 * @ctx: Pointer to context data (cb_ctx)
102 * This optional callback function will be called when the EAPOL
103 * authentication has been completed. This allows the owner of the
104 * EAPOL state machine to process the key and terminate the EAPOL state
105 * machine. Currently, this is used only in RSN pre-authentication.
107 void (*cb)(struct eapol_sm *eapol, enum eapol_supp_result result,
111 * cb_ctx - Callback context for cb()
116 * msg_ctx - Callback context for wpa_msg() calls
121 * scard_ctx - Callback context for PC/SC scard_*() function calls
123 * This context can be updated with eapol_sm_register_scard_ctx().
128 * eapol_send_ctx - Callback context for eapol_send() calls
130 void *eapol_send_ctx;
133 * eapol_done_cb - Function to be called at successful completion
134 * @ctx: Callback context (ctx)
136 * This function is called at the successful completion of EAPOL
137 * authentication. If dynamic WEP keys are used, this is called only
138 * after all the expected keys have been received.
140 void (*eapol_done_cb)(void *ctx);
143 * eapol_send - Send EAPOL packets
144 * @ctx: Callback context (eapol_send_ctx)
145 * @type: EAPOL type (IEEE802_1X_TYPE_*)
146 * @buf: Pointer to EAPOL payload
147 * @len: Length of the EAPOL payload
148 * Returns: 0 on success, -1 on failure
150 int (*eapol_send)(void *ctx, int type, const u8 *buf, size_t len);
153 * set_wep_key - Configure WEP keys
154 * @ctx: Callback context (ctx)
155 * @unicast: Non-zero = unicast, 0 = multicast/broadcast key
156 * @keyidx: Key index (0..3)
158 * @keylen: Length of the WEP key
159 * Returns: 0 on success, -1 on failure
161 int (*set_wep_key)(void *ctx, int unicast, int keyidx,
162 const u8 *key, size_t keylen);
165 * set_config_blob - Set or add a named configuration blob
166 * @ctx: Callback context (ctx)
167 * @blob: New value for the blob
169 * Adds a new configuration blob or replaces the current value of an
172 void (*set_config_blob)(void *ctx, struct wpa_config_blob *blob);
175 * get_config_blob - Get a named configuration blob
176 * @ctx: Callback context (ctx)
177 * @name: Name of the blob
178 * Returns: Pointer to blob data or %NULL if not found
180 const struct wpa_config_blob * (*get_config_blob)(void *ctx,
184 * aborted_cached - Notify that cached PMK attempt was aborted
185 * @ctx: Callback context (ctx)
187 void (*aborted_cached)(void *ctx);
190 * opensc_engine_path - Path to the OpenSSL engine for opensc
192 * This is an OpenSSL specific configuration option for loading OpenSC
193 * engine (engine_opensc.so); if %NULL, this engine is not loaded.
195 const char *opensc_engine_path;
198 * pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11
200 * This is an OpenSSL specific configuration option for loading PKCS#11
201 * engine (engine_pkcs11.so); if %NULL, this engine is not loaded.
203 const char *pkcs11_engine_path;
206 * pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module
208 * This is an OpenSSL specific configuration option for configuring
209 * path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this
210 * module is not loaded.
212 const char *pkcs11_module_path;
215 * openssl_ciphers - OpenSSL cipher string
217 * This is an OpenSSL specific configuration option for configuring the
218 * default ciphers. If not set, "DEFAULT:!EXP:!LOW" is used as the
221 const char *openssl_ciphers;
224 * wps - WPS context data
226 * This is only used by EAP-WSC and can be left %NULL if not available.
228 struct wps_context *wps;
231 * eap_param_needed - Notify that EAP parameter is needed
232 * @ctx: Callback context (ctx)
233 * @field: Field indicator (e.g., WPA_CTRL_REQ_EAP_IDENTITY)
234 * @txt: User readable text describing the required parameter
236 void (*eap_param_needed)(void *ctx, enum wpa_ctrl_req_type field,
240 * port_cb - Set port authorized/unauthorized callback (optional)
241 * @ctx: Callback context (ctx)
242 * @authorized: Whether the supplicant port is now in authorized state
244 void (*port_cb)(void *ctx, int authorized);
247 * cert_cb - Notification of a peer certificate
248 * @ctx: Callback context (ctx)
249 * @depth: Depth in certificate chain (0 = server)
250 * @subject: Subject of the peer certificate
251 * @altsubject: Select fields from AltSubject of the peer certificate
252 * @num_altsubject: Number of altsubject values
253 * @cert_hash: SHA-256 hash of the certificate
254 * @cert: Peer certificate
256 void (*cert_cb)(void *ctx, int depth, const char *subject,
257 const char *altsubject[], int num_altsubject,
258 const char *cert_hash, const struct wpabuf *cert);
261 * cert_in_cb - Include server certificates in callback
266 * status_cb - Notification of a change in EAP status
267 * @ctx: Callback context (ctx)
268 * @status: Step in the process of EAP authentication
269 * @parameter: Step-specific parameter, e.g., EAP method name
271 void (*status_cb)(void *ctx, const char *status,
272 const char *parameter);
275 * eap_error_cb - Notification of EAP method error
276 * @ctx: Callback context (ctx)
277 * @error_code: EAP method error code
279 void (*eap_error_cb)(void *ctx, int error_code);
281 #ifdef CONFIG_EAP_PROXY
283 * eap_proxy_cb - Callback signifying any updates from eap_proxy
284 * @ctx: eapol_ctx from eap_peer_sm_init() call
286 void (*eap_proxy_cb)(void *ctx);
289 * eap_proxy_notify_sim_status - Notification of SIM status change
290 * @ctx: eapol_ctx from eap_peer_sm_init() call
291 * @status: One of enum value from sim_state
293 void (*eap_proxy_notify_sim_status)(void *ctx,
294 enum eap_proxy_sim_state sim_state);
295 #endif /* CONFIG_EAP_PROXY */
298 * set_anon_id - Set or add anonymous identity
299 * @ctx: eapol_ctx from eap_peer_sm_init() call
300 * @id: Anonymous identity (e.g., EAP-SIM pseudonym)
301 * @len: Length of anonymous identity in octets
303 void (*set_anon_id)(void *ctx, const u8 *id, size_t len);
307 struct eap_peer_config;
308 struct ext_password_data;
310 #ifdef IEEE8021X_EAPOL
311 struct eapol_sm *eapol_sm_init(struct eapol_ctx *ctx);
312 void eapol_sm_deinit(struct eapol_sm *sm);
313 void eapol_sm_step(struct eapol_sm *sm);
314 int eapol_sm_get_status(struct eapol_sm *sm, char *buf, size_t buflen,
316 int eapol_sm_get_mib(struct eapol_sm *sm, char *buf, size_t buflen);
317 void eapol_sm_configure(struct eapol_sm *sm, int heldPeriod, int authPeriod,
318 int startPeriod, int maxStart);
319 int eapol_sm_rx_eapol(struct eapol_sm *sm, const u8 *src, const u8 *buf,
321 void eapol_sm_notify_tx_eapol_key(struct eapol_sm *sm);
322 void eapol_sm_notify_portEnabled(struct eapol_sm *sm, Boolean enabled);
323 void eapol_sm_notify_portValid(struct eapol_sm *sm, Boolean valid);
324 void eapol_sm_notify_eap_success(struct eapol_sm *sm, Boolean success);
325 void eapol_sm_notify_eap_fail(struct eapol_sm *sm, Boolean fail);
326 void eapol_sm_notify_config(struct eapol_sm *sm,
327 struct eap_peer_config *config,
328 const struct eapol_config *conf);
329 int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len);
330 const u8 * eapol_sm_get_session_id(struct eapol_sm *sm, size_t *len);
331 void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff);
332 void eapol_sm_notify_cached(struct eapol_sm *sm);
333 void eapol_sm_notify_pmkid_attempt(struct eapol_sm *sm);
334 void eapol_sm_register_scard_ctx(struct eapol_sm *sm, void *ctx);
335 void eapol_sm_notify_portControl(struct eapol_sm *sm, PortControl portControl);
336 void eapol_sm_notify_ctrl_attached(struct eapol_sm *sm);
337 void eapol_sm_notify_ctrl_response(struct eapol_sm *sm);
338 void eapol_sm_request_reauth(struct eapol_sm *sm);
339 void eapol_sm_notify_lower_layer_success(struct eapol_sm *sm, int in_eapol_sm);
340 void eapol_sm_invalidate_cached_session(struct eapol_sm *sm);
341 const char * eapol_sm_get_method_name(struct eapol_sm *sm);
342 void eapol_sm_set_ext_pw_ctx(struct eapol_sm *sm,
343 struct ext_password_data *ext);
344 int eapol_sm_failed(struct eapol_sm *sm);
345 void eapol_sm_erp_flush(struct eapol_sm *sm);
346 struct wpabuf * eapol_sm_build_erp_reauth_start(struct eapol_sm *sm);
347 void eapol_sm_process_erp_finish(struct eapol_sm *sm, const u8 *buf,
349 int eapol_sm_get_eap_proxy_imsi(void *ctx, int sim_num, char *imsi,
351 int eapol_sm_update_erp_next_seq_num(struct eapol_sm *sm, u16 next_seq_num);
352 int eapol_sm_get_erp_info(struct eapol_sm *sm, struct eap_peer_config *config,
353 const u8 **username, size_t *username_len,
354 const u8 **realm, size_t *realm_len,
355 u16 *erp_next_seq_num, const u8 **rrk,
358 #else /* IEEE8021X_EAPOL */
359 static inline struct eapol_sm *eapol_sm_init(struct eapol_ctx *ctx)
362 return (struct eapol_sm *) 1;
364 static inline void eapol_sm_deinit(struct eapol_sm *sm)
367 static inline void eapol_sm_step(struct eapol_sm *sm)
370 static inline int eapol_sm_get_status(struct eapol_sm *sm, char *buf,
371 size_t buflen, int verbose)
375 static inline int eapol_sm_get_mib(struct eapol_sm *sm, char *buf,
380 static inline void eapol_sm_configure(struct eapol_sm *sm, int heldPeriod,
381 int authPeriod, int startPeriod,
385 static inline int eapol_sm_rx_eapol(struct eapol_sm *sm, const u8 *src,
386 const u8 *buf, size_t len)
390 static inline void eapol_sm_notify_tx_eapol_key(struct eapol_sm *sm)
393 static inline void eapol_sm_notify_portEnabled(struct eapol_sm *sm,
397 static inline void eapol_sm_notify_portValid(struct eapol_sm *sm,
401 static inline void eapol_sm_notify_eap_success(struct eapol_sm *sm,
405 static inline void eapol_sm_notify_eap_fail(struct eapol_sm *sm, Boolean fail)
408 static inline void eapol_sm_notify_config(struct eapol_sm *sm,
409 struct eap_peer_config *config,
410 struct eapol_config *conf)
413 static inline int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len)
417 static inline const u8 *
418 eapol_sm_get_session_id(struct eapol_sm *sm, size_t *len)
422 static inline void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff)
425 static inline void eapol_sm_notify_cached(struct eapol_sm *sm)
428 static inline void eapol_sm_notify_pmkid_attempt(struct eapol_sm *sm)
431 #define eapol_sm_register_scard_ctx(sm, ctx) do { } while (0)
432 static inline void eapol_sm_notify_portControl(struct eapol_sm *sm,
433 PortControl portControl)
436 static inline void eapol_sm_notify_ctrl_attached(struct eapol_sm *sm)
439 static inline void eapol_sm_notify_ctrl_response(struct eapol_sm *sm)
442 static inline void eapol_sm_request_reauth(struct eapol_sm *sm)
445 static inline void eapol_sm_notify_lower_layer_success(struct eapol_sm *sm,
449 static inline void eapol_sm_invalidate_cached_session(struct eapol_sm *sm)
452 static inline const char * eapol_sm_get_method_name(struct eapol_sm *sm)
456 static inline void eapol_sm_set_ext_pw_ctx(struct eapol_sm *sm,
457 struct ext_password_data *ext)
460 static inline int eapol_sm_failed(struct eapol_sm *sm)
464 static inline void eapol_sm_erp_flush(struct eapol_sm *sm)
467 static inline struct wpabuf *
468 eapol_sm_build_erp_reauth_start(struct eapol_sm *sm)
472 static inline void eapol_sm_process_erp_finish(struct eapol_sm *sm,
473 const u8 *buf, size_t len)
476 static inline int eapol_sm_update_erp_next_seq_num(struct eapol_sm *sm,
482 eapol_sm_get_erp_info(struct eapol_sm *sm, struct eap_peer_config *config,
483 const u8 **username, size_t *username_len,
484 const u8 **realm, size_t *realm_len,
485 u16 *erp_next_seq_num, const u8 **rrk, size_t *rrk_len)
489 #endif /* IEEE8021X_EAPOL */
491 #endif /* EAPOL_SUPP_SM_H */