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 }; 142 143 144 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state) 145 { 146 WPA_ASSERT(sm->ctx->set_state); 147 sm->ctx->set_state(sm->ctx->ctx, state); 148 } 149 150 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm) 151 { 152 WPA_ASSERT(sm->ctx->get_state); 153 return sm->ctx->get_state(sm->ctx->ctx); 154 } 155 156 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code) 157 { 158 WPA_ASSERT(sm->ctx->deauthenticate); 159 sm->ctx->deauthenticate(sm->ctx->ctx, reason_code); 160 } 161 162 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg, 163 const u8 *addr, int key_idx, int set_tx, 164 const u8 *seq, size_t seq_len, 165 const u8 *key, size_t key_len) 166 { 167 WPA_ASSERT(sm->ctx->set_key); 168 return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx, 169 seq, seq_len, key, key_len); 170 } 171 172 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm) 173 { 174 WPA_ASSERT(sm->ctx->get_network_ctx); 175 return sm->ctx->get_network_ctx(sm->ctx->ctx); 176 } 177 178 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid) 179 { 180 WPA_ASSERT(sm->ctx->get_bssid); 181 return sm->ctx->get_bssid(sm->ctx->ctx, bssid); 182 } 183 184 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest, 185 u16 proto, const u8 *buf, size_t len) 186 { 187 WPA_ASSERT(sm->ctx->ether_send); 188 return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len); 189 } 190 191 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm) 192 { 193 WPA_ASSERT(sm->ctx->get_beacon_ie); 194 return sm->ctx->get_beacon_ie(sm->ctx->ctx); 195 } 196 197 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm) 198 { 199 WPA_ASSERT(sm->ctx->cancel_auth_timeout); 200 sm->ctx->cancel_auth_timeout(sm->ctx->ctx); 201 } 202 203 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type, 204 const void *data, u16 data_len, 205 size_t *msg_len, void **data_pos) 206 { 207 WPA_ASSERT(sm->ctx->alloc_eapol); 208 return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len, 209 msg_len, data_pos); 210 } 211 212 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, const u8 *bssid, 213 const u8 *pmkid) 214 { 215 WPA_ASSERT(sm->ctx->add_pmkid); 216 return sm->ctx->add_pmkid(sm->ctx->ctx, bssid, pmkid); 217 } 218 219 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, const u8 *bssid, 220 const u8 *pmkid) 221 { 222 WPA_ASSERT(sm->ctx->remove_pmkid); 223 return sm->ctx->remove_pmkid(sm->ctx->ctx, bssid, pmkid); 224 } 225 226 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr, 227 int protect_type, int key_type) 228 { 229 WPA_ASSERT(sm->ctx->mlme_setprotection); 230 return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type, 231 key_type); 232 } 233 234 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md, 235 const u8 *ies, size_t ies_len) 236 { 237 if (sm->ctx->update_ft_ies) 238 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len); 239 return -1; 240 } 241 242 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action, 243 const u8 *target_ap, 244 const u8 *ies, size_t ies_len) 245 { 246 if (sm->ctx->send_ft_action) 247 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap, 248 ies, ies_len); 249 return -1; 250 } 251 252 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm, 253 const u8 *target_ap) 254 { 255 if (sm->ctx->mark_authenticated) 256 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap); 257 return -1; 258 } 259 260 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm) 261 { 262 if (!sm->ctx->set_rekey_offload) 263 return; 264 sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, sm->ptk.kek_len, 265 sm->ptk.kck, sm->ptk.kck_len, 266 sm->rx_replay_counter); 267 } 268 269 #ifdef CONFIG_TDLS 270 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm, 271 int *tdls_supported, 272 int *tdls_ext_setup, 273 int *tdls_chan_switch) 274 { 275 if (sm->ctx->tdls_get_capa) 276 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported, 277 tdls_ext_setup, tdls_chan_switch); 278 return -1; 279 } 280 281 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst, 282 u8 action_code, u8 dialog_token, 283 u16 status_code, u32 peer_capab, 284 int initiator, const u8 *buf, 285 size_t len) 286 { 287 if (sm->ctx->send_tdls_mgmt) 288 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code, 289 dialog_token, status_code, 290 peer_capab, initiator, buf, 291 len); 292 return -1; 293 } 294 295 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper, 296 const u8 *peer) 297 { 298 if (sm->ctx->tdls_oper) 299 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer); 300 return -1; 301 } 302 303 static inline int 304 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add, 305 u16 aid, u16 capability, const u8 *supp_rates, 306 size_t supp_rates_len, 307 const struct ieee80211_ht_capabilities *ht_capab, 308 const struct ieee80211_vht_capabilities *vht_capab, 309 u8 qosinfo, int wmm, const u8 *ext_capab, 310 size_t ext_capab_len, const u8 *supp_channels, 311 size_t supp_channels_len, const u8 *supp_oper_classes, 312 size_t supp_oper_classes_len) 313 { 314 if (sm->ctx->tdls_peer_addset) 315 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add, 316 aid, capability, supp_rates, 317 supp_rates_len, ht_capab, 318 vht_capab, qosinfo, wmm, 319 ext_capab, ext_capab_len, 320 supp_channels, 321 supp_channels_len, 322 supp_oper_classes, 323 supp_oper_classes_len); 324 return -1; 325 } 326 327 static inline int 328 wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr, 329 u8 oper_class, 330 const struct hostapd_freq_params *freq_params) 331 { 332 if (sm->ctx->tdls_enable_channel_switch) 333 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr, 334 oper_class, 335 freq_params); 336 return -1; 337 } 338 339 static inline int 340 wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr) 341 { 342 if (sm->ctx->tdls_disable_channel_switch) 343 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr); 344 return -1; 345 } 346 #endif /* CONFIG_TDLS */ 347 348 static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm, 349 const u8 *pmk, size_t pmk_len) 350 { 351 if (!sm->ctx->key_mgmt_set_pmk) 352 return -1; 353 return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len); 354 } 355 356 int wpa_eapol_key_send(struct wpa_sm *sm, const u8 *kck, size_t kck_len, 357 int ver, const u8 *dest, u16 proto, 358 u8 *msg, size_t msg_len, u8 *key_mic); 359 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst, 360 const struct wpa_eapol_key *key, 361 int ver, const u8 *nonce, 362 const u8 *wpa_ie, size_t wpa_ie_len, 363 struct wpa_ptk *ptk); 364 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst, 365 const struct wpa_eapol_key *key, 366 u16 ver, u16 key_info, 367 struct wpa_ptk *ptk); 368 369 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr, 370 const struct wpa_eapol_key *key, struct wpa_ptk *ptk); 371 372 void wpa_tdls_assoc(struct wpa_sm *sm); 373 void wpa_tdls_disassoc(struct wpa_sm *sm); 374 375 #endif /* WPA_I_H */ 376
