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