1 /* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2017, Jouni Malinen <j (at) w1.fi> 4 * 5 * This software may be distributed under the terms of the BSD license. 6 * See README for more details. 7 */ 8 9 #ifndef WPA_I_H 10 #define WPA_I_H 11 12 #include "utils/list.h" 13 14 struct wpa_tdls_peer; 15 struct wpa_eapol_key; 16 17 /** 18 * struct wpa_sm - Internal WPA state machine data 19 */ 20 struct wpa_sm { 21 u8 pmk[PMK_LEN_MAX]; 22 size_t pmk_len; 23 struct wpa_ptk ptk, tptk; 24 int ptk_set, tptk_set; 25 unsigned int msg_3_of_4_ok:1; 26 u8 snonce[WPA_NONCE_LEN]; 27 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */ 28 int renew_snonce; 29 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN]; 30 int rx_replay_counter_set; 31 u8 request_counter[WPA_REPLAY_COUNTER_LEN]; 32 struct wpa_gtk gtk; 33 struct wpa_gtk gtk_wnm_sleep; 34 #ifdef CONFIG_IEEE80211W 35 struct wpa_igtk igtk; 36 struct wpa_igtk igtk_wnm_sleep; 37 #endif /* CONFIG_IEEE80211W */ 38 39 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */ 40 41 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */ 42 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */ 43 struct dl_list pmksa_candidates; 44 45 struct l2_packet_data *l2_preauth; 46 struct l2_packet_data *l2_preauth_br; 47 struct l2_packet_data *l2_tdls; 48 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or 49 * 00:00:00:00:00:00 if no pre-auth is 50 * in progress */ 51 struct eapol_sm *preauth_eapol; 52 53 struct wpa_sm_ctx *ctx; 54 55 void *scard_ctx; /* context for smartcard callbacks */ 56 int fast_reauth; /* whether EAP fast re-authentication is enabled */ 57 58 void *network_ctx; 59 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */ 60 int proactive_key_caching; 61 int eap_workaround; 62 void *eap_conf_ctx; 63 u8 ssid[32]; 64 size_t ssid_len; 65 int wpa_ptk_rekey; 66 int p2p; 67 int wpa_rsc_relaxation; 68 69 u8 own_addr[ETH_ALEN]; 70 const char *ifname; 71 const char *bridge_ifname; 72 u8 bssid[ETH_ALEN]; 73 74 unsigned int dot11RSNAConfigPMKLifetime; 75 unsigned int dot11RSNAConfigPMKReauthThreshold; 76 unsigned int dot11RSNAConfigSATimeout; 77 78 unsigned int dot11RSNA4WayHandshakeFailures; 79 80 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */ 81 unsigned int proto; 82 unsigned int pairwise_cipher; 83 unsigned int group_cipher; 84 unsigned int key_mgmt; 85 unsigned int mgmt_group_cipher; 86 87 int rsn_enabled; /* Whether RSN is enabled in configuration */ 88 int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */ 89 90 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */ 91 size_t assoc_wpa_ie_len; 92 u8 *ap_wpa_ie, *ap_rsn_ie; 93 size_t ap_wpa_ie_len, ap_rsn_ie_len; 94 95 #ifdef CONFIG_TDLS 96 struct wpa_tdls_peer *tdls; 97 int tdls_prohibited; 98 int tdls_chan_switch_prohibited; 99 int tdls_disabled; 100 101 /* The driver supports TDLS */ 102 int tdls_supported; 103 104 /* 105 * The driver requires explicit discovery/setup/teardown frames sent 106 * to it via tdls_mgmt. 107 */ 108 int tdls_external_setup; 109 110 /* The driver supports TDLS channel switching */ 111 int tdls_chan_switch; 112 #endif /* CONFIG_TDLS */ 113 114 #ifdef CONFIG_IEEE80211R 115 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 116 size_t xxkey_len; 117 u8 pmk_r0[PMK_LEN]; 118 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 119 u8 pmk_r1[PMK_LEN]; 120 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 121 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 122 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 123 size_t r0kh_id_len; 124 u8 r1kh_id[FT_R1KH_ID_LEN]; 125 int ft_completed; 126 int ft_reassoc_completed; 127 int over_the_ds_in_progress; 128 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 129 int set_ptk_after_assoc; 130 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 131 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 132 size_t assoc_resp_ies_len; 133 #endif /* CONFIG_IEEE80211R */ 134 135 #ifdef CONFIG_P2P 136 u8 p2p_ip_addr[3 * 4]; 137 #endif /* CONFIG_P2P */ 138 139 #ifdef CONFIG_TESTING_OPTIONS 140 struct wpabuf *test_assoc_ie; 141 #endif /* CONFIG_TESTING_OPTIONS */ 142 143 #ifdef CONFIG_FILS 144 u8 fils_nonce[FILS_NONCE_LEN]; 145 u8 fils_session[FILS_SESSION_LEN]; 146 u8 fils_anonce[FILS_NONCE_LEN]; 147 u8 fils_key_auth_ap[FILS_MAX_KEY_AUTH_LEN]; 148 u8 fils_key_auth_sta[FILS_MAX_KEY_AUTH_LEN]; 149 size_t fils_key_auth_len; 150 unsigned int fils_completed:1; 151 unsigned int fils_erp_pmkid_set:1; 152 unsigned int fils_cache_id_set:1; 153 u8 fils_erp_pmkid[PMKID_LEN]; 154 u8 fils_cache_id[FILS_CACHE_ID_LEN]; 155 struct crypto_ecdh *fils_ecdh; 156 int fils_dh_group; 157 size_t fils_dh_elem_len; 158 struct wpabuf *fils_ft_ies; 159 u8 fils_ft[FILS_FT_MAX_LEN]; 160 size_t fils_ft_len; 161 #endif /* CONFIG_FILS */ 162 163 #ifdef CONFIG_OWE 164 struct crypto_ecdh *owe_ecdh; 165 u16 owe_group; 166 #endif /* CONFIG_OWE */ 167 }; 168 169 170 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 171 { 172 WPA_ASSERT(sm->ctx->set_state); 173 sm->ctx->set_state(sm->ctx->ctx, state); 174 } 175 176 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 177 { 178 WPA_ASSERT(sm->ctx->get_state); 179 return sm->ctx->get_state(sm->ctx->ctx); 180 } 181 182 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 183 { 184 WPA_ASSERT(sm->ctx->deauthenticate); 185 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 186 } 187 188 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 189 const u8 *addr, int key_idx, int set_tx, 190 const u8 *seq, size_t seq_len, 191 const u8 *key, size_t key_len) 192 { 193 WPA_ASSERT(sm->ctx->set_key); 194 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 195 seq, seq_len, key, key_len); 196 } 197 198 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 199 { 200 WPA_ASSERT(sm->ctx->get_network_ctx); 201 return sm->ctx->get_network_ctx(sm->ctx->ctx); 202 } 203 204 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 205 { 206 WPA_ASSERT(sm->ctx->get_bssid); 207 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 208 } 209 210 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 211 u16 proto, const u8 *buf, size_t len) 212 { 213 WPA_ASSERT(sm->ctx->ether_send); 214 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 215 } 216 217 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 218 { 219 WPA_ASSERT(sm->ctx->get_beacon_ie); 220 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 221 } 222 223 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 224 { 225 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 226 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 227 } 228 229 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 230 const void *data, u16 data_len, 231 size_t *msg_len, void **data_pos) 232 { 233 WPA_ASSERT(sm->ctx->alloc_eapol); 234 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 235 msg_len, data_pos); 236 } 237 238 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, void *network_ctx, 239 const u8 *bssid, const u8 *pmkid, 240 const u8 *cache_id, const u8 *pmk, 241 size_t pmk_len) 242 { 243 WPA_ASSERT(sm->ctx->add_pmkid); 244 return sm->ctx->add_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid, 245 cache_id, pmk, pmk_len); 246 } 247 248 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, void *network_ctx, 249 const u8 *bssid, const u8 *pmkid, 250 const u8 *cache_id) 251 { 252 WPA_ASSERT(sm->ctx->remove_pmkid); 253 return sm->ctx->remove_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid, 254 cache_id); 255 } 256 257 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 258 int protect_type, int key_type) 259 { 260 WPA_ASSERT(sm->ctx->mlme_setprotection); 261 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 262 key_type); 263 } 264 265 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 266 const u8 *ies, size_t ies_len) 267 { 268 if (sm->ctx->update_ft_ies) 269 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 270 return -1; 271 } 272 273 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 274 const u8 *target_ap, 275 const u8 *ies, size_t ies_len) 276 { 277 if (sm->ctx->send_ft_action) 278 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 279 ies, ies_len); 280 return -1; 281 } 282 283 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 284 const u8 *target_ap) 285 { 286 if (sm->ctx->mark_authenticated) 287 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 288 return -1; 289 } 290 291 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 292 { 293 if (!sm->ctx->set_rekey_offload) 294 return; 295 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, sm->ptk.kek_len, 296 sm->ptk.kck, sm->ptk.kck_len, 297 sm->rx_replay_counter); 298 } 299 300 #ifdef CONFIG_TDLS 301 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 302 int *tdls_supported, 303 int *tdls_ext_setup, 304 int *tdls_chan_switch) 305 { 306 if (sm->ctx->tdls_get_capa) 307 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 308 tdls_ext_setup, tdls_chan_switch); 309 return -1; 310 } 311 312 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 313 u8 action_code, u8 dialog_token, 314 u16 status_code, u32 peer_capab, 315 int initiator, const u8 *buf, 316 size_t len) 317 { 318 if (sm->ctx->send_tdls_mgmt) 319 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 320 dialog_token, status_code, 321 peer_capab, initiator, buf, 322 len); 323 return -1; 324 } 325 326 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 327 const u8 *peer) 328 { 329 if (sm->ctx->tdls_oper) 330 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 331 return -1; 332 } 333 334 static inline int 335 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 336 u16 aid, u16 capability, const u8 *supp_rates, 337 size_t supp_rates_len, 338 const struct ieee80211_ht_capabilities *ht_capab, 339 const struct ieee80211_vht_capabilities *vht_capab, 340 u8 qosinfo, int wmm, const u8 *ext_capab, 341 size_t ext_capab_len, const u8 *supp_channels, 342 size_t supp_channels_len, const u8 *supp_oper_classes, 343 size_t supp_oper_classes_len) 344 { 345 if (sm->ctx->tdls_peer_addset) 346 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 347 aid, capability, supp_rates, 348 supp_rates_len, ht_capab, 349 vht_capab, qosinfo, wmm, 350 ext_capab, ext_capab_len, 351 supp_channels, 352 supp_channels_len, 353 supp_oper_classes, 354 supp_oper_classes_len); 355 return -1; 356 } 357 358 static inline int 359 wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr, 360 u8 oper_class, 361 const struct hostapd_freq_params *freq_params) 362 { 363 if (sm->ctx->tdls_enable_channel_switch) 364 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr, 365 oper_class, 366 freq_params); 367 return -1; 368 } 369 370 static inline int 371 wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr) 372 { 373 if (sm->ctx->tdls_disable_channel_switch) 374 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr); 375 return -1; 376 } 377 #endif /* CONFIG_TDLS */ 378 379 static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm, 380 const u8 *pmk, size_t pmk_len) 381 { 382 if (!sm->ctx->key_mgmt_set_pmk) 383 return -1; 384 return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len); 385 } 386 387 static inline void wpa_sm_fils_hlp_rx(struct wpa_sm *sm, 388 const u8 *dst, const u8 *src, 389 const u8 *pkt, size_t pkt_len) 390 { 391 if (sm->ctx->fils_hlp_rx) 392 sm->ctx->fils_hlp_rx(sm->ctx->ctx, dst, src, pkt, pkt_len); 393 } 394 395 396 int wpa_eapol_key_send(struct wpa_sm *sm, struct wpa_ptk *ptk, 397 int ver, const u8 *dest, u16 proto, 398 u8 *msg, size_t msg_len, u8 *key_mic); 399 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 400 const struct wpa_eapol_key *key, 401 int ver, const u8 *nonce, 402 const u8 *wpa_ie, size_t wpa_ie_len, 403 struct wpa_ptk *ptk); 404 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 405 const struct wpa_eapol_key *key, 406 u16 ver, u16 key_info, 407 struct wpa_ptk *ptk); 408 409 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 410 const struct wpa_eapol_key *key, struct wpa_ptk *ptk); 411 412 void wpa_tdls_assoc(struct wpa_sm *sm); 413 void wpa_tdls_disassoc(struct wpa_sm *sm); 414 415 #endif /* WPA_I_H */ 416
