1 /* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2018, Jouni Malinen <j@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_MAX]; /* PSK or the second 256 bits of MSK, or the 116 * first 384 bits of MSK */ 117 size_t xxkey_len; 118 u8 pmk_r0[PMK_LEN_MAX]; 119 size_t pmk_r0_len; 120 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 121 u8 pmk_r1[PMK_LEN_MAX]; 122 size_t pmk_r1_len; 123 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 124 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 125 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 126 size_t r0kh_id_len; 127 u8 r1kh_id[FT_R1KH_ID_LEN]; 128 int ft_completed; 129 int ft_reassoc_completed; 130 int over_the_ds_in_progress; 131 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 132 int set_ptk_after_assoc; 133 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 134 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 135 size_t assoc_resp_ies_len; 136 #endif /* CONFIG_IEEE80211R */ 137 138 #ifdef CONFIG_P2P 139 u8 p2p_ip_addr[3 * 4]; 140 #endif /* CONFIG_P2P */ 141 142 #ifdef CONFIG_TESTING_OPTIONS 143 struct wpabuf *test_assoc_ie; 144 #endif /* CONFIG_TESTING_OPTIONS */ 145 146 #ifdef CONFIG_FILS 147 u8 fils_nonce[FILS_NONCE_LEN]; 148 u8 fils_session[FILS_SESSION_LEN]; 149 u8 fils_anonce[FILS_NONCE_LEN]; 150 u8 fils_key_auth_ap[FILS_MAX_KEY_AUTH_LEN]; 151 u8 fils_key_auth_sta[FILS_MAX_KEY_AUTH_LEN]; 152 size_t fils_key_auth_len; 153 unsigned int fils_completed:1; 154 unsigned int fils_erp_pmkid_set:1; 155 unsigned int fils_cache_id_set:1; 156 u8 fils_erp_pmkid[PMKID_LEN]; 157 u8 fils_cache_id[FILS_CACHE_ID_LEN]; 158 struct crypto_ecdh *fils_ecdh; 159 int fils_dh_group; 160 size_t fils_dh_elem_len; 161 struct wpabuf *fils_ft_ies; 162 u8 fils_ft[FILS_FT_MAX_LEN]; 163 size_t fils_ft_len; 164 #endif /* CONFIG_FILS */ 165 166 #ifdef CONFIG_OWE 167 struct crypto_ecdh *owe_ecdh; 168 u16 owe_group; 169 #endif /* CONFIG_OWE */ 170 }; 171 172 173 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 174 { 175 WPA_ASSERT(sm->ctx->set_state); 176 sm->ctx->set_state(sm->ctx->ctx, state); 177 } 178 179 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 180 { 181 WPA_ASSERT(sm->ctx->get_state); 182 return sm->ctx->get_state(sm->ctx->ctx); 183 } 184 185 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 186 { 187 WPA_ASSERT(sm->ctx->deauthenticate); 188 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 189 } 190 191 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 192 const u8 *addr, int key_idx, int set_tx, 193 const u8 *seq, size_t seq_len, 194 const u8 *key, size_t key_len) 195 { 196 WPA_ASSERT(sm->ctx->set_key); 197 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 198 seq, seq_len, key, key_len); 199 } 200 201 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 202 { 203 WPA_ASSERT(sm->ctx->get_network_ctx); 204 return sm->ctx->get_network_ctx(sm->ctx->ctx); 205 } 206 207 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 208 { 209 WPA_ASSERT(sm->ctx->get_bssid); 210 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 211 } 212 213 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 214 u16 proto, const u8 *buf, size_t len) 215 { 216 WPA_ASSERT(sm->ctx->ether_send); 217 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 218 } 219 220 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 221 { 222 WPA_ASSERT(sm->ctx->get_beacon_ie); 223 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 224 } 225 226 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 227 { 228 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 229 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 230 } 231 232 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 233 const void *data, u16 data_len, 234 size_t *msg_len, void **data_pos) 235 { 236 WPA_ASSERT(sm->ctx->alloc_eapol); 237 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 238 msg_len, data_pos); 239 } 240 241 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, void *network_ctx, 242 const u8 *bssid, const u8 *pmkid, 243 const u8 *cache_id, const u8 *pmk, 244 size_t pmk_len) 245 { 246 WPA_ASSERT(sm->ctx->add_pmkid); 247 return sm->ctx->add_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid, 248 cache_id, pmk, pmk_len); 249 } 250 251 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, void *network_ctx, 252 const u8 *bssid, const u8 *pmkid, 253 const u8 *cache_id) 254 { 255 WPA_ASSERT(sm->ctx->remove_pmkid); 256 return sm->ctx->remove_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid, 257 cache_id); 258 } 259 260 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 261 int protect_type, int key_type) 262 { 263 WPA_ASSERT(sm->ctx->mlme_setprotection); 264 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 265 key_type); 266 } 267 268 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 269 const u8 *ies, size_t ies_len) 270 { 271 if (sm->ctx->update_ft_ies) 272 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 273 return -1; 274 } 275 276 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 277 const u8 *target_ap, 278 const u8 *ies, size_t ies_len) 279 { 280 if (sm->ctx->send_ft_action) 281 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 282 ies, ies_len); 283 return -1; 284 } 285 286 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 287 const u8 *target_ap) 288 { 289 if (sm->ctx->mark_authenticated) 290 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 291 return -1; 292 } 293 294 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 295 { 296 if (!sm->ctx->set_rekey_offload) 297 return; 298 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, sm->ptk.kek_len, 299 sm->ptk.kck, sm->ptk.kck_len, 300 sm->rx_replay_counter); 301 } 302 303 #ifdef CONFIG_TDLS 304 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 305 int *tdls_supported, 306 int *tdls_ext_setup, 307 int *tdls_chan_switch) 308 { 309 if (sm->ctx->tdls_get_capa) 310 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 311 tdls_ext_setup, tdls_chan_switch); 312 return -1; 313 } 314 315 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 316 u8 action_code, u8 dialog_token, 317 u16 status_code, u32 peer_capab, 318 int initiator, const u8 *buf, 319 size_t len) 320 { 321 if (sm->ctx->send_tdls_mgmt) 322 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 323 dialog_token, status_code, 324 peer_capab, initiator, buf, 325 len); 326 return -1; 327 } 328 329 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 330 const u8 *peer) 331 { 332 if (sm->ctx->tdls_oper) 333 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 334 return -1; 335 } 336 337 static inline int 338 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 339 u16 aid, u16 capability, const u8 *supp_rates, 340 size_t supp_rates_len, 341 const struct ieee80211_ht_capabilities *ht_capab, 342 const struct ieee80211_vht_capabilities *vht_capab, 343 u8 qosinfo, int wmm, const u8 *ext_capab, 344 size_t ext_capab_len, const u8 *supp_channels, 345 size_t supp_channels_len, const u8 *supp_oper_classes, 346 size_t supp_oper_classes_len) 347 { 348 if (sm->ctx->tdls_peer_addset) 349 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 350 aid, capability, supp_rates, 351 supp_rates_len, ht_capab, 352 vht_capab, qosinfo, wmm, 353 ext_capab, ext_capab_len, 354 supp_channels, 355 supp_channels_len, 356 supp_oper_classes, 357 supp_oper_classes_len); 358 return -1; 359 } 360 361 static inline int 362 wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr, 363 u8 oper_class, 364 const struct hostapd_freq_params *freq_params) 365 { 366 if (sm->ctx->tdls_enable_channel_switch) 367 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr, 368 oper_class, 369 freq_params); 370 return -1; 371 } 372 373 static inline int 374 wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr) 375 { 376 if (sm->ctx->tdls_disable_channel_switch) 377 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr); 378 return -1; 379 } 380 #endif /* CONFIG_TDLS */ 381 382 static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm, 383 const u8 *pmk, size_t pmk_len) 384 { 385 if (!sm->ctx->key_mgmt_set_pmk) 386 return -1; 387 return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len); 388 } 389 390 static inline void wpa_sm_fils_hlp_rx(struct wpa_sm *sm, 391 const u8 *dst, const u8 *src, 392 const u8 *pkt, size_t pkt_len) 393 { 394 if (sm->ctx->fils_hlp_rx) 395 sm->ctx->fils_hlp_rx(sm->ctx->ctx, dst, src, pkt, pkt_len); 396 } 397 398 399 int wpa_eapol_key_send(struct wpa_sm *sm, struct wpa_ptk *ptk, 400 int ver, const u8 *dest, u16 proto, 401 u8 *msg, size_t msg_len, u8 *key_mic); 402 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 403 const struct wpa_eapol_key *key, 404 int ver, const u8 *nonce, 405 const u8 *wpa_ie, size_t wpa_ie_len, 406 struct wpa_ptk *ptk); 407 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 408 const struct wpa_eapol_key *key, 409 u16 ver, u16 key_info, 410 struct wpa_ptk *ptk); 411 412 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 413 const struct wpa_eapol_key *key, struct wpa_ptk *ptk); 414 415 void wpa_tdls_assoc(struct wpa_sm *sm); 416 void wpa_tdls_disassoc(struct wpa_sm *sm); 417 418 #endif /* WPA_I_H */ 419