1 /* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2015, 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_peerkey; 15 struct wpa_tdls_peer; 16 struct wpa_eapol_key; 17 18 /** 19 * struct wpa_sm - Internal WPA state machine data 20 */ 21 struct wpa_sm { 22 u8 pmk[PMK_LEN_MAX]; 23 size_t pmk_len; 24 struct wpa_ptk ptk, tptk; 25 int ptk_set, tptk_set; 26 unsigned int msg_3_of_4_ok:1; 27 u8 snonce[WPA_NONCE_LEN]; 28 u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */ 29 int renew_snonce; 30 u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN]; 31 int rx_replay_counter_set; 32 u8 request_counter[WPA_REPLAY_COUNTER_LEN]; 33 struct wpa_gtk gtk; 34 struct wpa_gtk gtk_wnm_sleep; 35 #ifdef CONFIG_IEEE80211W 36 struct wpa_igtk igtk; 37 struct wpa_igtk igtk_wnm_sleep; 38 #endif /* CONFIG_IEEE80211W */ 39 40 struct eapol_sm *eapol; /* EAPOL state machine from upper level code */ 41 42 struct rsn_pmksa_cache *pmksa; /* PMKSA cache */ 43 struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */ 44 struct dl_list pmksa_candidates; 45 46 struct l2_packet_data *l2_preauth; 47 struct l2_packet_data *l2_preauth_br; 48 struct l2_packet_data *l2_tdls; 49 u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or 50 * 00:00:00:00:00:00 if no pre-auth is 51 * in progress */ 52 struct eapol_sm *preauth_eapol; 53 54 struct wpa_sm_ctx *ctx; 55 56 void *scard_ctx; /* context for smartcard callbacks */ 57 int fast_reauth; /* whether EAP fast re-authentication is enabled */ 58 59 void *network_ctx; 60 int peerkey_enabled; 61 int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */ 62 int proactive_key_caching; 63 int eap_workaround; 64 void *eap_conf_ctx; 65 u8 ssid[32]; 66 size_t ssid_len; 67 int wpa_ptk_rekey; 68 int p2p; 69 int wpa_rsc_relaxation; 70 71 u8 own_addr[ETH_ALEN]; 72 const char *ifname; 73 const char *bridge_ifname; 74 u8 bssid[ETH_ALEN]; 75 76 unsigned int dot11RSNAConfigPMKLifetime; 77 unsigned int dot11RSNAConfigPMKReauthThreshold; 78 unsigned int dot11RSNAConfigSATimeout; 79 80 unsigned int dot11RSNA4WayHandshakeFailures; 81 82 /* Selected configuration (based on Beacon/ProbeResp WPA IE) */ 83 unsigned int proto; 84 unsigned int pairwise_cipher; 85 unsigned int group_cipher; 86 unsigned int key_mgmt; 87 unsigned int mgmt_group_cipher; 88 89 int rsn_enabled; /* Whether RSN is enabled in configuration */ 90 int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */ 91 92 u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */ 93 size_t assoc_wpa_ie_len; 94 u8 *ap_wpa_ie, *ap_rsn_ie; 95 size_t ap_wpa_ie_len, ap_rsn_ie_len; 96 97 #ifdef CONFIG_PEERKEY 98 struct wpa_peerkey *peerkey; 99 #endif /* CONFIG_PEERKEY */ 100 #ifdef CONFIG_TDLS 101 struct wpa_tdls_peer *tdls; 102 int tdls_prohibited; 103 int tdls_chan_switch_prohibited; 104 int tdls_disabled; 105 106 /* The driver supports TDLS */ 107 int tdls_supported; 108 109 /* 110 * The driver requires explicit discovery/setup/teardown frames sent 111 * to it via tdls_mgmt. 112 */ 113 int tdls_external_setup; 114 115 /* The driver supports TDLS channel switching */ 116 int tdls_chan_switch; 117 #endif /* CONFIG_TDLS */ 118 119 #ifdef CONFIG_IEEE80211R 120 u8 xxkey[PMK_LEN]; /* PSK or the second 256 bits of MSK */ 121 size_t xxkey_len; 122 u8 pmk_r0[PMK_LEN]; 123 u8 pmk_r0_name[WPA_PMK_NAME_LEN]; 124 u8 pmk_r1[PMK_LEN]; 125 u8 pmk_r1_name[WPA_PMK_NAME_LEN]; 126 u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN]; 127 u8 r0kh_id[FT_R0KH_ID_MAX_LEN]; 128 size_t r0kh_id_len; 129 u8 r1kh_id[FT_R1KH_ID_LEN]; 130 int ft_completed; 131 int ft_reassoc_completed; 132 int over_the_ds_in_progress; 133 u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */ 134 int set_ptk_after_assoc; 135 u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */ 136 u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */ 137 size_t assoc_resp_ies_len; 138 #endif /* CONFIG_IEEE80211R */ 139 140 #ifdef CONFIG_P2P 141 u8 p2p_ip_addr[3 * 4]; 142 #endif /* CONFIG_P2P */ 143 144 #ifdef CONFIG_TESTING_OPTIONS 145 struct wpabuf *test_assoc_ie; 146 #endif /* CONFIG_TESTING_OPTIONS */ 147 148 #ifdef CONFIG_FILS 149 u8 fils_nonce[FILS_NONCE_LEN]; 150 u8 fils_session[FILS_SESSION_LEN]; 151 u8 fils_anonce[FILS_NONCE_LEN]; 152 u8 fils_key_auth_ap[FILS_MAX_KEY_AUTH_LEN]; 153 u8 fils_key_auth_sta[FILS_MAX_KEY_AUTH_LEN]; 154 size_t fils_key_auth_len; 155 unsigned int fils_completed:1; 156 unsigned int fils_erp_pmkid_set:1; 157 u8 fils_erp_pmkid[PMKID_LEN]; 158 #endif /* CONFIG_FILS */ 159 }; 160 161 162 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 163 { 164 WPA_ASSERT(sm->ctx->set_state); 165 sm->ctx->set_state(sm->ctx->ctx, state); 166 } 167 168 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 169 { 170 WPA_ASSERT(sm->ctx->get_state); 171 return sm->ctx->get_state(sm->ctx->ctx); 172 } 173 174 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 175 { 176 WPA_ASSERT(sm->ctx->deauthenticate); 177 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 178 } 179 180 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 181 const u8 *addr, int key_idx, int set_tx, 182 const u8 *seq, size_t seq_len, 183 const u8 *key, size_t key_len) 184 { 185 WPA_ASSERT(sm->ctx->set_key); 186 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 187 seq, seq_len, key, key_len); 188 } 189 190 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 191 { 192 WPA_ASSERT(sm->ctx->get_network_ctx); 193 return sm->ctx->get_network_ctx(sm->ctx->ctx); 194 } 195 196 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 197 { 198 WPA_ASSERT(sm->ctx->get_bssid); 199 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 200 } 201 202 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 203 u16 proto, const u8 *buf, size_t len) 204 { 205 WPA_ASSERT(sm->ctx->ether_send); 206 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 207 } 208 209 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 210 { 211 WPA_ASSERT(sm->ctx->get_beacon_ie); 212 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 213 } 214 215 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 216 { 217 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 218 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 219 } 220 221 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 222 const void *data, u16 data_len, 223 size_t *msg_len, void **data_pos) 224 { 225 WPA_ASSERT(sm->ctx->alloc_eapol); 226 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 227 msg_len, data_pos); 228 } 229 230 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, void *network_ctx, 231 const u8 *bssid, const u8 *pmkid) 232 { 233 WPA_ASSERT(sm->ctx->add_pmkid); 234 return sm->ctx->add_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid); 235 } 236 237 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, void *network_ctx, 238 const u8 *bssid, const u8 *pmkid) 239 { 240 WPA_ASSERT(sm->ctx->remove_pmkid); 241 return sm->ctx->remove_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid); 242 } 243 244 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 245 int protect_type, int key_type) 246 { 247 WPA_ASSERT(sm->ctx->mlme_setprotection); 248 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 249 key_type); 250 } 251 252 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 253 const u8 *ies, size_t ies_len) 254 { 255 if (sm->ctx->update_ft_ies) 256 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 257 return -1; 258 } 259 260 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 261 const u8 *target_ap, 262 const u8 *ies, size_t ies_len) 263 { 264 if (sm->ctx->send_ft_action) 265 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 266 ies, ies_len); 267 return -1; 268 } 269 270 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 271 const u8 *target_ap) 272 { 273 if (sm->ctx->mark_authenticated) 274 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 275 return -1; 276 } 277 278 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 279 { 280 if (!sm->ctx->set_rekey_offload) 281 return; 282 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, sm->ptk.kek_len, 283 sm->ptk.kck, sm->ptk.kck_len, 284 sm->rx_replay_counter); 285 } 286 287 #ifdef CONFIG_TDLS 288 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 289 int *tdls_supported, 290 int *tdls_ext_setup, 291 int *tdls_chan_switch) 292 { 293 if (sm->ctx->tdls_get_capa) 294 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 295 tdls_ext_setup, tdls_chan_switch); 296 return -1; 297 } 298 299 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 300 u8 action_code, u8 dialog_token, 301 u16 status_code, u32 peer_capab, 302 int initiator, const u8 *buf, 303 size_t len) 304 { 305 if (sm->ctx->send_tdls_mgmt) 306 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 307 dialog_token, status_code, 308 peer_capab, initiator, buf, 309 len); 310 return -1; 311 } 312 313 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 314 const u8 *peer) 315 { 316 if (sm->ctx->tdls_oper) 317 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 318 return -1; 319 } 320 321 static inline int 322 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 323 u16 aid, u16 capability, const u8 *supp_rates, 324 size_t supp_rates_len, 325 const struct ieee80211_ht_capabilities *ht_capab, 326 const struct ieee80211_vht_capabilities *vht_capab, 327 u8 qosinfo, int wmm, const u8 *ext_capab, 328 size_t ext_capab_len, const u8 *supp_channels, 329 size_t supp_channels_len, const u8 *supp_oper_classes, 330 size_t supp_oper_classes_len) 331 { 332 if (sm->ctx->tdls_peer_addset) 333 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 334 aid, capability, supp_rates, 335 supp_rates_len, ht_capab, 336 vht_capab, qosinfo, wmm, 337 ext_capab, ext_capab_len, 338 supp_channels, 339 supp_channels_len, 340 supp_oper_classes, 341 supp_oper_classes_len); 342 return -1; 343 } 344 345 static inline int 346 wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr, 347 u8 oper_class, 348 const struct hostapd_freq_params *freq_params) 349 { 350 if (sm->ctx->tdls_enable_channel_switch) 351 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr, 352 oper_class, 353 freq_params); 354 return -1; 355 } 356 357 static inline int 358 wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr) 359 { 360 if (sm->ctx->tdls_disable_channel_switch) 361 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr); 362 return -1; 363 } 364 #endif /* CONFIG_TDLS */ 365 366 static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm, 367 const u8 *pmk, size_t pmk_len) 368 { 369 if (!sm->ctx->key_mgmt_set_pmk) 370 return -1; 371 return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len); 372 } 373 374 static inline void wpa_sm_fils_hlp_rx(struct wpa_sm *sm, 375 const u8 *dst, const u8 *src, 376 const u8 *pkt, size_t pkt_len) 377 { 378 if (sm->ctx->fils_hlp_rx) 379 sm->ctx->fils_hlp_rx(sm->ctx->ctx, dst, src, pkt, pkt_len); 380 } 381 382 383 int wpa_eapol_key_send(struct wpa_sm *sm, struct wpa_ptk *ptk, 384 int ver, const u8 *dest, u16 proto, 385 u8 *msg, size_t msg_len, u8 *key_mic); 386 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 387 const struct wpa_eapol_key *key, 388 int ver, const u8 *nonce, 389 const u8 *wpa_ie, size_t wpa_ie_len, 390 struct wpa_ptk *ptk); 391 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 392 const struct wpa_eapol_key *key, 393 u16 ver, u16 key_info, 394 struct wpa_ptk *ptk); 395 396 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 397 const struct wpa_eapol_key *key, struct wpa_ptk *ptk); 398 399 void wpa_tdls_assoc(struct wpa_sm *sm); 400 void wpa_tdls_disassoc(struct wpa_sm *sm); 401 402 #endif /* WPA_I_H */ 403
