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
64 struct wpa_config_blob;
66 enum eapol_supp_result {
67 EAPOL_SUPP_RESULT_FAILURE,
68 EAPOL_SUPP_RESULT_SUCCESS,
69 EAPOL_SUPP_RESULT_EXPECTED_FAILURE
73 * struct eapol_ctx - Global (for all networks) EAPOL state machine context
77 * ctx - Pointer to arbitrary upper level context
82 * preauth - IEEE 802.11i/RSN pre-authentication
84 * This EAPOL state machine is used for IEEE 802.11i/RSN
90 * cb - Function to be called when EAPOL negotiation has been completed
91 * @eapol: Pointer to EAPOL state machine data
92 * @result: Whether the authentication was completed successfully
93 * @ctx: Pointer to context data (cb_ctx)
95 * This optional callback function will be called when the EAPOL
96 * authentication has been completed. This allows the owner of the
97 * EAPOL state machine to process the key and terminate the EAPOL state
98 * machine. Currently, this is used only in RSN pre-authentication.
100 void (*cb)(struct eapol_sm *eapol, enum eapol_supp_result result,
104 * cb_ctx - Callback context for cb()
109 * msg_ctx - Callback context for wpa_msg() calls
114 * scard_ctx - Callback context for PC/SC scard_*() function calls
116 * This context can be updated with eapol_sm_register_scard_ctx().
121 * eapol_send_ctx - Callback context for eapol_send() calls
123 void *eapol_send_ctx;
126 * eapol_done_cb - Function to be called at successful completion
127 * @ctx: Callback context (ctx)
129 * This function is called at the successful completion of EAPOL
130 * authentication. If dynamic WEP keys are used, this is called only
131 * after all the expected keys have been received.
133 void (*eapol_done_cb)(void *ctx);
136 * eapol_send - Send EAPOL packets
137 * @ctx: Callback context (eapol_send_ctx)
138 * @type: EAPOL type (IEEE802_1X_TYPE_*)
139 * @buf: Pointer to EAPOL payload
140 * @len: Length of the EAPOL payload
141 * Returns: 0 on success, -1 on failure
143 int (*eapol_send)(void *ctx, int type, const u8 *buf, size_t len);
146 * set_wep_key - Configure WEP keys
147 * @ctx: Callback context (ctx)
148 * @unicast: Non-zero = unicast, 0 = multicast/broadcast key
149 * @keyidx: Key index (0..3)
151 * @keylen: Length of the WEP key
152 * Returns: 0 on success, -1 on failure
154 int (*set_wep_key)(void *ctx, int unicast, int keyidx,
155 const u8 *key, size_t keylen);
158 * set_config_blob - Set or add a named configuration blob
159 * @ctx: Callback context (ctx)
160 * @blob: New value for the blob
162 * Adds a new configuration blob or replaces the current value of an
165 void (*set_config_blob)(void *ctx, struct wpa_config_blob *blob);
168 * get_config_blob - Get a named configuration blob
169 * @ctx: Callback context (ctx)
170 * @name: Name of the blob
171 * Returns: Pointer to blob data or %NULL if not found
173 const struct wpa_config_blob * (*get_config_blob)(void *ctx,
177 * aborted_cached - Notify that cached PMK attempt was aborted
178 * @ctx: Callback context (ctx)
180 void (*aborted_cached)(void *ctx);
183 * opensc_engine_path - Path to the OpenSSL engine for opensc
185 * This is an OpenSSL specific configuration option for loading OpenSC
186 * engine (engine_opensc.so); if %NULL, this engine is not loaded.
188 const char *opensc_engine_path;
191 * pkcs11_engine_path - Path to the OpenSSL engine for PKCS#11
193 * This is an OpenSSL specific configuration option for loading PKCS#11
194 * engine (engine_pkcs11.so); if %NULL, this engine is not loaded.
196 const char *pkcs11_engine_path;
199 * pkcs11_module_path - Path to the OpenSSL OpenSC/PKCS#11 module
201 * This is an OpenSSL specific configuration option for configuring
202 * path to OpenSC/PKCS#11 engine (opensc-pkcs11.so); if %NULL, this
203 * module is not loaded.
205 const char *pkcs11_module_path;
208 * wps - WPS context data
210 * This is only used by EAP-WSC and can be left %NULL if not available.
212 struct wps_context *wps;
215 * eap_param_needed - Notify that EAP parameter is needed
216 * @ctx: Callback context (ctx)
217 * @field: Field indicator (e.g., WPA_CTRL_REQ_EAP_IDENTITY)
218 * @txt: User readable text describing the required parameter
220 void (*eap_param_needed)(void *ctx, enum wpa_ctrl_req_type field,
224 * port_cb - Set port authorized/unauthorized callback (optional)
225 * @ctx: Callback context (ctx)
226 * @authorized: Whether the supplicant port is now in authorized state
228 void (*port_cb)(void *ctx, int authorized);
231 * cert_cb - Notification of a peer certificate
232 * @ctx: Callback context (ctx)
233 * @depth: Depth in certificate chain (0 = server)
234 * @subject: Subject of the peer certificate
235 * @cert_hash: SHA-256 hash of the certificate
236 * @cert: Peer certificate
238 void (*cert_cb)(void *ctx, int depth, const char *subject,
239 const char *cert_hash, const struct wpabuf *cert);
242 * cert_in_cb - Include server certificates in callback
247 * status_cb - Notification of a change in EAP status
248 * @ctx: Callback context (ctx)
249 * @status: Step in the process of EAP authentication
250 * @parameter: Step-specific parameter, e.g., EAP method name
252 void (*status_cb)(void *ctx, const char *status,
253 const char *parameter);
256 * set_anon_id - Set or add anonymous identity
257 * @ctx: eapol_ctx from eap_peer_sm_init() call
258 * @id: Anonymous identity (e.g., EAP-SIM pseudonym)
259 * @len: Length of anonymous identity in octets
261 void (*set_anon_id)(void *ctx, const u8 *id, size_t len);
265 struct eap_peer_config;
266 struct ext_password_data;
268 #ifdef IEEE8021X_EAPOL
269 struct eapol_sm *eapol_sm_init(struct eapol_ctx *ctx);
270 void eapol_sm_deinit(struct eapol_sm *sm);
271 void eapol_sm_step(struct eapol_sm *sm);
272 int eapol_sm_get_status(struct eapol_sm *sm, char *buf, size_t buflen,
274 int eapol_sm_get_mib(struct eapol_sm *sm, char *buf, size_t buflen);
275 void eapol_sm_configure(struct eapol_sm *sm, int heldPeriod, int authPeriod,
276 int startPeriod, int maxStart);
277 int eapol_sm_rx_eapol(struct eapol_sm *sm, const u8 *src, const u8 *buf,
279 void eapol_sm_notify_tx_eapol_key(struct eapol_sm *sm);
280 void eapol_sm_notify_portEnabled(struct eapol_sm *sm, Boolean enabled);
281 void eapol_sm_notify_portValid(struct eapol_sm *sm, Boolean valid);
282 void eapol_sm_notify_eap_success(struct eapol_sm *sm, Boolean success);
283 void eapol_sm_notify_eap_fail(struct eapol_sm *sm, Boolean fail);
284 void eapol_sm_notify_config(struct eapol_sm *sm,
285 struct eap_peer_config *config,
286 const struct eapol_config *conf);
287 int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len);
288 void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff);
289 void eapol_sm_notify_cached(struct eapol_sm *sm);
290 void eapol_sm_notify_pmkid_attempt(struct eapol_sm *sm, int attempt);
291 void eapol_sm_register_scard_ctx(struct eapol_sm *sm, void *ctx);
292 void eapol_sm_notify_portControl(struct eapol_sm *sm, PortControl portControl);
293 void eapol_sm_notify_ctrl_attached(struct eapol_sm *sm);
294 void eapol_sm_notify_ctrl_response(struct eapol_sm *sm);
295 void eapol_sm_request_reauth(struct eapol_sm *sm);
296 void eapol_sm_notify_lower_layer_success(struct eapol_sm *sm, int in_eapol_sm);
297 void eapol_sm_invalidate_cached_session(struct eapol_sm *sm);
298 const char * eapol_sm_get_method_name(struct eapol_sm *sm);
299 void eapol_sm_set_ext_pw_ctx(struct eapol_sm *sm,
300 struct ext_password_data *ext);
301 int eapol_sm_failed(struct eapol_sm *sm);
302 int eapol_sm_get_eap_proxy_imsi(struct eapol_sm *sm, char *imsi, size_t *len);
303 #else /* IEEE8021X_EAPOL */
304 static inline struct eapol_sm *eapol_sm_init(struct eapol_ctx *ctx)
307 return (struct eapol_sm *) 1;
309 static inline void eapol_sm_deinit(struct eapol_sm *sm)
312 static inline void eapol_sm_step(struct eapol_sm *sm)
315 static inline int eapol_sm_get_status(struct eapol_sm *sm, char *buf,
316 size_t buflen, int verbose)
320 static inline int eapol_sm_get_mib(struct eapol_sm *sm, char *buf,
325 static inline void eapol_sm_configure(struct eapol_sm *sm, int heldPeriod,
326 int authPeriod, int startPeriod,
330 static inline int eapol_sm_rx_eapol(struct eapol_sm *sm, const u8 *src,
331 const u8 *buf, size_t len)
335 static inline void eapol_sm_notify_tx_eapol_key(struct eapol_sm *sm)
338 static inline void eapol_sm_notify_portEnabled(struct eapol_sm *sm,
342 static inline void eapol_sm_notify_portValid(struct eapol_sm *sm,
346 static inline void eapol_sm_notify_eap_success(struct eapol_sm *sm,
350 static inline void eapol_sm_notify_eap_fail(struct eapol_sm *sm, Boolean fail)
353 static inline void eapol_sm_notify_config(struct eapol_sm *sm,
354 struct eap_peer_config *config,
355 struct eapol_config *conf)
358 static inline int eapol_sm_get_key(struct eapol_sm *sm, u8 *key, size_t len)
362 static inline void eapol_sm_notify_logoff(struct eapol_sm *sm, Boolean logoff)
365 static inline void eapol_sm_notify_cached(struct eapol_sm *sm)
368 #define eapol_sm_notify_pmkid_attempt(sm, attempt) do { } while (0)
369 #define eapol_sm_register_scard_ctx(sm, ctx) do { } while (0)
370 static inline void eapol_sm_notify_portControl(struct eapol_sm *sm,
371 PortControl portControl)
374 static inline void eapol_sm_notify_ctrl_attached(struct eapol_sm *sm)
377 static inline void eapol_sm_notify_ctrl_response(struct eapol_sm *sm)
380 static inline void eapol_sm_request_reauth(struct eapol_sm *sm)
383 static inline void eapol_sm_notify_lower_layer_success(struct eapol_sm *sm,
387 static inline void eapol_sm_invalidate_cached_session(struct eapol_sm *sm)
390 static inline const char * eapol_sm_get_method_name(struct eapol_sm *sm)
394 static inline void eapol_sm_set_ext_pw_ctx(struct eapol_sm *sm,
395 struct ext_password_data *ext)
398 static inline int eapol_sm_failed(struct eapol_sm *sm)
402 #endif /* IEEE8021X_EAPOL */
404 #endif /* EAPOL_SUPP_SM_H */