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