1 /* 2 * Internal WPA/RSN supplicant state machine definitions 3 * Copyright (c) 2004-2015, 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_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 }; 148 149 150 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 151 { 152 WPA_ASSERT(sm->ctx->set_state); 153 sm->ctx->set_state(sm->ctx->ctx, state); 154 } 155 156 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 157 { 158 WPA_ASSERT(sm->ctx->get_state); 159 return sm->ctx->get_state(sm->ctx->ctx); 160 } 161 162 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 163 { 164 WPA_ASSERT(sm->ctx->deauthenticate); 165 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 166 } 167 168 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 169 const u8 *addr, int key_idx, int set_tx, 170 const u8 *seq, size_t seq_len, 171 const u8 *key, size_t key_len) 172 { 173 WPA_ASSERT(sm->ctx->set_key); 174 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 175 seq, seq_len, key, key_len); 176 } 177 178 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 179 { 180 WPA_ASSERT(sm->ctx->get_network_ctx); 181 return sm->ctx->get_network_ctx(sm->ctx->ctx); 182 } 183 184 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 185 { 186 WPA_ASSERT(sm->ctx->get_bssid); 187 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 188 } 189 190 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 191 u16 proto, const u8 *buf, size_t len) 192 { 193 WPA_ASSERT(sm->ctx->ether_send); 194 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 195 } 196 197 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 198 { 199 WPA_ASSERT(sm->ctx->get_beacon_ie); 200 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 201 } 202 203 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 204 { 205 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 206 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 207 } 208 209 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 210 const void *data, u16 data_len, 211 size_t *msg_len, void **data_pos) 212 { 213 WPA_ASSERT(sm->ctx->alloc_eapol); 214 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 215 msg_len, data_pos); 216 } 217 218 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 219 const u8 *pmkid) 220 { 221 WPA_ASSERT(sm->ctx->add_pmkid); 222 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 223 } 224 225 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 226 const u8 *pmkid) 227 { 228 WPA_ASSERT(sm->ctx->remove_pmkid); 229 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 230 } 231 232 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 233 int protect_type, int key_type) 234 { 235 WPA_ASSERT(sm->ctx->mlme_setprotection); 236 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 237 key_type); 238 } 239 240 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 241 const u8 *ies, size_t ies_len) 242 { 243 if (sm->ctx->update_ft_ies) 244 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 245 return -1; 246 } 247 248 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 249 const u8 *target_ap, 250 const u8 *ies, size_t ies_len) 251 { 252 if (sm->ctx->send_ft_action) 253 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 254 ies, ies_len); 255 return -1; 256 } 257 258 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 259 const u8 *target_ap) 260 { 261 if (sm->ctx->mark_authenticated) 262 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 263 return -1; 264 } 265 266 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 267 { 268 if (!sm->ctx->set_rekey_offload) 269 return; 270 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, sm->ptk.kek_len, 271 sm->ptk.kck, sm->ptk.kck_len, 272 sm->rx_replay_counter); 273 } 274 275 #ifdef CONFIG_TDLS 276 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 277 int *tdls_supported, 278 int *tdls_ext_setup, 279 int *tdls_chan_switch) 280 { 281 if (sm->ctx->tdls_get_capa) 282 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 283 tdls_ext_setup, tdls_chan_switch); 284 return -1; 285 } 286 287 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 288 u8 action_code, u8 dialog_token, 289 u16 status_code, u32 peer_capab, 290 int initiator, const u8 *buf, 291 size_t len) 292 { 293 if (sm->ctx->send_tdls_mgmt) 294 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 295 dialog_token, status_code, 296 peer_capab, initiator, buf, 297 len); 298 return -1; 299 } 300 301 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 302 const u8 *peer) 303 { 304 if (sm->ctx->tdls_oper) 305 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 306 return -1; 307 } 308 309 static inline int 310 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 311 u16 aid, u16 capability, const u8 *supp_rates, 312 size_t supp_rates_len, 313 const struct ieee80211_ht_capabilities *ht_capab, 314 const struct ieee80211_vht_capabilities *vht_capab, 315 u8 qosinfo, int wmm, const u8 *ext_capab, 316 size_t ext_capab_len, const u8 *supp_channels, 317 size_t supp_channels_len, const u8 *supp_oper_classes, 318 size_t supp_oper_classes_len) 319 { 320 if (sm->ctx->tdls_peer_addset) 321 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 322 aid, capability, supp_rates, 323 supp_rates_len, ht_capab, 324 vht_capab, qosinfo, wmm, 325 ext_capab, ext_capab_len, 326 supp_channels, 327 supp_channels_len, 328 supp_oper_classes, 329 supp_oper_classes_len); 330 return -1; 331 } 332 333 static inline int 334 wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr, 335 u8 oper_class, 336 const struct hostapd_freq_params *freq_params) 337 { 338 if (sm->ctx->tdls_enable_channel_switch) 339 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr, 340 oper_class, 341 freq_params); 342 return -1; 343 } 344 345 static inline int 346 wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr) 347 { 348 if (sm->ctx->tdls_disable_channel_switch) 349 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr); 350 return -1; 351 } 352 #endif /* CONFIG_TDLS */ 353 354 static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm, 355 const u8 *pmk, size_t pmk_len) 356 { 357 if (!sm->ctx->key_mgmt_set_pmk) 358 return -1; 359 return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len); 360 } 361 362 int wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, size_t kck_len, 363 int ver, const u8 *dest, u16 proto, 364 u8 *msg, size_t msg_len, u8 *key_mic); 365 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 366 const struct wpa_eapol_key *key, 367 int ver, const u8 *nonce, 368 const u8 *wpa_ie, size_t wpa_ie_len, 369 struct wpa_ptk *ptk); 370 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 371 const struct wpa_eapol_key *key, 372 u16 ver, u16 key_info, 373 struct wpa_ptk *ptk); 374 375 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 376 const struct wpa_eapol_key *key, struct wpa_ptk *ptk); 377 378 void wpa_tdls_assoc(struct wpa_sm *sm); 379 void wpa_tdls_disassoc(struct wpa_sm *sm); 380 381 #endif /* WPA_I_H */ 382