src/rsn_supp/wpa_i.h

   1 /*
   2  * Internal WPA/RSN supplicant state machine definitions
   3  * Copyright (c) 2004-2018, 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_tdls_peer;
  15 struct wpa_eapol_key;
  16
  17 /**
  18  * struct wpa_sm - Internal WPA state machine data
  19  */
  20 struct wpa_sm {
  21         u8 pmk[PMK_LEN_MAX];
  22         size_t pmk_len;
  23         struct wpa_ptk ptk, tptk;
  24         int ptk_set, tptk_set;
  25         unsigned int msg_3_of_4_ok:1;
  26         u8 snonce[WPA_NONCE_LEN];
  27         u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
  28         int renew_snonce;
  29         u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
  30         int rx_replay_counter_set;
  31         u8 request_counter[WPA_REPLAY_COUNTER_LEN];
  32         struct wpa_gtk gtk;
  33         struct wpa_gtk gtk_wnm_sleep;
  34 #ifdef CONFIG_IEEE80211W
  35         struct wpa_igtk igtk;
  36         struct wpa_igtk igtk_wnm_sleep;
  37 #endif /* CONFIG_IEEE80211W */
  38
  39         struct eapol_sm *eapol; /* EAPOL state machine from upper level code */
  40
  41         struct rsn_pmksa_cache *pmksa; /* PMKSA cache */
  42         struct rsn_pmksa_cache_entry *cur_pmksa; /* current PMKSA entry */
  43         struct dl_list pmksa_candidates;
  44
  45         struct l2_packet_data *l2_preauth;
  46         struct l2_packet_data *l2_preauth_br;
  47         struct l2_packet_data *l2_tdls;
  48         u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or
  49                                      * 00:00:00:00:00:00 if no pre-auth is
  50                                      * in progress */
  51         struct eapol_sm *preauth_eapol;
  52
  53         struct wpa_sm_ctx *ctx;
  54
  55         void *scard_ctx; /* context for smartcard callbacks */
  56         int fast_reauth; /* whether EAP fast re-authentication is enabled */
  57
  58         void *network_ctx;
  59         int allowed_pairwise_cipher; /* bitfield of WPA_CIPHER_* */
  60         int proactive_key_caching;
  61         int eap_workaround;
  62         void *eap_conf_ctx;
  63         u8 ssid[32];
  64         size_t ssid_len;
  65         int wpa_ptk_rekey;
  66         int p2p;
  67         int wpa_rsc_relaxation;
  68
  69         u8 own_addr[ETH_ALEN];
  70         const char *ifname;
  71         const char *bridge_ifname;
  72         u8 bssid[ETH_ALEN];
  73
  74         unsigned int dot11RSNAConfigPMKLifetime;
  75         unsigned int dot11RSNAConfigPMKReauthThreshold;
  76         unsigned int dot11RSNAConfigSATimeout;
  77
  78         unsigned int dot11RSNA4WayHandshakeFailures;
  79
  80         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
  81         unsigned int proto;
  82         unsigned int pairwise_cipher;
  83         unsigned int group_cipher;
  84         unsigned int key_mgmt;
  85         unsigned int mgmt_group_cipher;
  86
  87         int rsn_enabled; /* Whether RSN is enabled in configuration */
  88         int mfp; /* 0 = disabled, 1 = optional, 2 = mandatory */
  89         int ocv; /* Operating Channel Validation */
  90
  91         u8 *assoc_wpa_ie; /* Own WPA/RSN IE from (Re)AssocReq */
  92         size_t assoc_wpa_ie_len;
  93         u8 *ap_wpa_ie, *ap_rsn_ie;
  94         size_t ap_wpa_ie_len, ap_rsn_ie_len;
  95
  96 #ifdef CONFIG_TDLS
  97         struct wpa_tdls_peer *tdls;
  98         int tdls_prohibited;
  99         int tdls_chan_switch_prohibited;
 100         int tdls_disabled;
 101
 102         /* The driver supports TDLS */
 103         int tdls_supported;
 104
 105         /*
 106          * The driver requires explicit discovery/setup/teardown frames sent
 107          * to it via tdls_mgmt.
 108          */
 109         int tdls_external_setup;
 110
 111         /* The driver supports TDLS channel switching */
 112         int tdls_chan_switch;
 113 #endif /* CONFIG_TDLS */
 114
 115 #ifdef CONFIG_IEEE80211R
 116         u8 xxkey[PMK_LEN_MAX]; /* PSK or the second 256 bits of MSK, or the
 117                                 * first 384 bits of MSK */
 118         size_t xxkey_len;
 119         u8 pmk_r0[PMK_LEN_MAX];
 120         size_t pmk_r0_len;
 121         u8 pmk_r0_name[WPA_PMK_NAME_LEN];
 122         u8 pmk_r1[PMK_LEN_MAX];
 123         size_t pmk_r1_len;
 124         u8 pmk_r1_name[WPA_PMK_NAME_LEN];
 125         u8 mobility_domain[MOBILITY_DOMAIN_ID_LEN];
 126         u8 r0kh_id[FT_R0KH_ID_MAX_LEN];
 127         size_t r0kh_id_len;
 128         u8 r1kh_id[FT_R1KH_ID_LEN];
 129         int ft_completed;
 130         int ft_reassoc_completed;
 131         int over_the_ds_in_progress;
 132         u8 target_ap[ETH_ALEN]; /* over-the-DS target AP */
 133         int set_ptk_after_assoc;
 134         u8 mdie_ft_capab; /* FT Capability and Policy from target AP MDIE */
 135         u8 *assoc_resp_ies; /* MDIE and FTIE from (Re)Association Response */
 136         size_t assoc_resp_ies_len;
 137 #endif /* CONFIG_IEEE80211R */
 138
 139 #ifdef CONFIG_P2P
 140         u8 p2p_ip_addr[3 * 4];
 141 #endif /* CONFIG_P2P */
 142
 143 #ifdef CONFIG_TESTING_OPTIONS
 144         struct wpabuf *test_assoc_ie;
 145 #endif /* CONFIG_TESTING_OPTIONS */
 146
 147 #ifdef CONFIG_FILS
 148         u8 fils_nonce[FILS_NONCE_LEN];
 149         u8 fils_session[FILS_SESSION_LEN];
 150         u8 fils_anonce[FILS_NONCE_LEN];
 151         u8 fils_key_auth_ap[FILS_MAX_KEY_AUTH_LEN];
 152         u8 fils_key_auth_sta[FILS_MAX_KEY_AUTH_LEN];
 153         size_t fils_key_auth_len;
 154         unsigned int fils_completed:1;
 155         unsigned int fils_erp_pmkid_set:1;
 156         unsigned int fils_cache_id_set:1;
 157         u8 fils_erp_pmkid[PMKID_LEN];
 158         u8 fils_cache_id[FILS_CACHE_ID_LEN];
 159         struct crypto_ecdh *fils_ecdh;
 160         int fils_dh_group;
 161         size_t fils_dh_elem_len;
 162         struct wpabuf *fils_ft_ies;
 163         u8 fils_ft[FILS_FT_MAX_LEN];
 164         size_t fils_ft_len;
 165 #endif /* CONFIG_FILS */
 166
 167 #ifdef CONFIG_OWE
 168         struct crypto_ecdh *owe_ecdh;
 169         u16 owe_group;
 170 #endif /* CONFIG_OWE */
 171 };
 172
 173
 174 static inline void wpa_sm_set_state(struct wpa_sm *sm, enum wpa_states state)
 175 {
 176         WPA_ASSERT(sm->ctx->set_state);
 177         sm->ctx->set_state(sm->ctx->ctx, state);
 178 }
 179
 180 static inline enum wpa_states wpa_sm_get_state(struct wpa_sm *sm)
 181 {
 182         WPA_ASSERT(sm->ctx->get_state);
 183         return sm->ctx->get_state(sm->ctx->ctx);
 184 }
 185
 186 static inline void wpa_sm_deauthenticate(struct wpa_sm *sm, int reason_code)
 187 {
 188         WPA_ASSERT(sm->ctx->deauthenticate);
 189         sm->ctx->deauthenticate(sm->ctx->ctx, reason_code);
 190 }
 191
 192 static inline int wpa_sm_set_key(struct wpa_sm *sm, enum wpa_alg alg,
 193                                  const u8 *addr, int key_idx, int set_tx,
 194                                  const u8 *seq, size_t seq_len,
 195                                  const u8 *key, size_t key_len)
 196 {
 197         WPA_ASSERT(sm->ctx->set_key);
 198         return sm->ctx->set_key(sm->ctx->ctx, alg, addr, key_idx, set_tx,
 199                                 seq, seq_len, key, key_len);
 200 }
 201
 202 static inline void * wpa_sm_get_network_ctx(struct wpa_sm *sm)
 203 {
 204         WPA_ASSERT(sm->ctx->get_network_ctx);
 205         return sm->ctx->get_network_ctx(sm->ctx->ctx);
 206 }
 207
 208 static inline int wpa_sm_get_bssid(struct wpa_sm *sm, u8 *bssid)
 209 {
 210         WPA_ASSERT(sm->ctx->get_bssid);
 211         return sm->ctx->get_bssid(sm->ctx->ctx, bssid);
 212 }
 213
 214 static inline int wpa_sm_ether_send(struct wpa_sm *sm, const u8 *dest,
 215                                     u16 proto, const u8 *buf, size_t len)
 216 {
 217         WPA_ASSERT(sm->ctx->ether_send);
 218         return sm->ctx->ether_send(sm->ctx->ctx, dest, proto, buf, len);
 219 }
 220
 221 static inline int wpa_sm_get_beacon_ie(struct wpa_sm *sm)
 222 {
 223         WPA_ASSERT(sm->ctx->get_beacon_ie);
 224         return sm->ctx->get_beacon_ie(sm->ctx->ctx);
 225 }
 226
 227 static inline void wpa_sm_cancel_auth_timeout(struct wpa_sm *sm)
 228 {
 229         WPA_ASSERT(sm->ctx->cancel_auth_timeout);
 230         sm->ctx->cancel_auth_timeout(sm->ctx->ctx);
 231 }
 232
 233 static inline u8 * wpa_sm_alloc_eapol(struct wpa_sm *sm, u8 type,
 234                                       const void *data, u16 data_len,
 235                                       size_t *msg_len, void **data_pos)
 236 {
 237         WPA_ASSERT(sm->ctx->alloc_eapol);
 238         return sm->ctx->alloc_eapol(sm->ctx->ctx, type, data, data_len,
 239                                     msg_len, data_pos);
 240 }
 241
 242 static inline int wpa_sm_add_pmkid(struct wpa_sm *sm, void *network_ctx,
 243                                    const u8 *bssid, const u8 *pmkid,
 244                                    const u8 *cache_id, const u8 *pmk,
 245                                    size_t pmk_len)
 246 {
 247         WPA_ASSERT(sm->ctx->add_pmkid);
 248         return sm->ctx->add_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid,
 249                                   cache_id, pmk, pmk_len);
 250 }
 251
 252 static inline int wpa_sm_remove_pmkid(struct wpa_sm *sm, void *network_ctx,
 253                                       const u8 *bssid, const u8 *pmkid,
 254                                       const u8 *cache_id)
 255 {
 256         WPA_ASSERT(sm->ctx->remove_pmkid);
 257         return sm->ctx->remove_pmkid(sm->ctx->ctx, network_ctx, bssid, pmkid,
 258                                      cache_id);
 259 }
 260
 261 static inline int wpa_sm_mlme_setprotection(struct wpa_sm *sm, const u8 *addr,
 262                                             int protect_type, int key_type)
 263 {
 264         WPA_ASSERT(sm->ctx->mlme_setprotection);
 265         return sm->ctx->mlme_setprotection(sm->ctx->ctx, addr, protect_type,
 266                                            key_type);
 267 }
 268
 269 static inline int wpa_sm_update_ft_ies(struct wpa_sm *sm, const u8 *md,
 270                                        const u8 *ies, size_t ies_len)
 271 {
 272         if (sm->ctx->update_ft_ies)
 273                 return sm->ctx->update_ft_ies(sm->ctx->ctx, md, ies, ies_len);
 274         return -1;
 275 }
 276
 277 static inline int wpa_sm_send_ft_action(struct wpa_sm *sm, u8 action,
 278                                         const u8 *target_ap,
 279                                         const u8 *ies, size_t ies_len)
 280 {
 281         if (sm->ctx->send_ft_action)
 282                 return sm->ctx->send_ft_action(sm->ctx->ctx, action, target_ap,
 283                                                ies, ies_len);
 284         return -1;
 285 }
 286
 287 static inline int wpa_sm_mark_authenticated(struct wpa_sm *sm,
 288                                             const u8 *target_ap)
 289 {
 290         if (sm->ctx->mark_authenticated)
 291                 return sm->ctx->mark_authenticated(sm->ctx->ctx, target_ap);
 292         return -1;
 293 }
 294
 295 static inline void wpa_sm_set_rekey_offload(struct wpa_sm *sm)
 296 {
 297         if (!sm->ctx->set_rekey_offload)
 298                 return;
 299         sm->ctx->set_rekey_offload(sm->ctx->ctx, sm->ptk.kek, sm->ptk.kek_len,
 300                                    sm->ptk.kck, sm->ptk.kck_len,
 301                                    sm->rx_replay_counter);
 302 }
 303
 304 #ifdef CONFIG_TDLS
 305 static inline int wpa_sm_tdls_get_capa(struct wpa_sm *sm,
 306                                        int *tdls_supported,
 307                                        int *tdls_ext_setup,
 308                                        int *tdls_chan_switch)
 309 {
 310         if (sm->ctx->tdls_get_capa)
 311                 return sm->ctx->tdls_get_capa(sm->ctx->ctx, tdls_supported,
 312                                               tdls_ext_setup, tdls_chan_switch);
 313         return -1;
 314 }
 315
 316 static inline int wpa_sm_send_tdls_mgmt(struct wpa_sm *sm, const u8 *dst,
 317                                         u8 action_code, u8 dialog_token,
 318                                         u16 status_code, u32 peer_capab,
 319                                         int initiator, const u8 *buf,
 320                                         size_t len)
 321 {
 322         if (sm->ctx->send_tdls_mgmt)
 323                 return sm->ctx->send_tdls_mgmt(sm->ctx->ctx, dst, action_code,
 324                                                dialog_token, status_code,
 325                                                peer_capab, initiator, buf,
 326                                                len);
 327         return -1;
 328 }
 329
 330 static inline int wpa_sm_tdls_oper(struct wpa_sm *sm, int oper,
 331                                    const u8 *peer)
 332 {
 333         if (sm->ctx->tdls_oper)
 334                 return sm->ctx->tdls_oper(sm->ctx->ctx, oper, peer);
 335         return -1;
 336 }
 337
 338 static inline int
 339 wpa_sm_tdls_peer_addset(struct wpa_sm *sm, const u8 *addr, int add,
 340                         u16 aid, u16 capability, const u8 *supp_rates,
 341                         size_t supp_rates_len,
 342                         const struct ieee80211_ht_capabilities *ht_capab,
 343                         const struct ieee80211_vht_capabilities *vht_capab,
 344                         u8 qosinfo, int wmm, const u8 *ext_capab,
 345                         size_t ext_capab_len, const u8 *supp_channels,
 346                         size_t supp_channels_len, const u8 *supp_oper_classes,
 347                         size_t supp_oper_classes_len)
 348 {
 349         if (sm->ctx->tdls_peer_addset)
 350                 return sm->ctx->tdls_peer_addset(sm->ctx->ctx, addr, add,
 351                                                  aid, capability, supp_rates,
 352                                                  supp_rates_len, ht_capab,
 353                                                  vht_capab, qosinfo, wmm,
 354                                                  ext_capab, ext_capab_len,
 355                                                  supp_channels,
 356                                                  supp_channels_len,
 357                                                  supp_oper_classes,
 358                                                  supp_oper_classes_len);
 359         return -1;
 360 }
 361
 362 static inline int
 363 wpa_sm_tdls_enable_channel_switch(struct wpa_sm *sm, const u8 *addr,
 364                                   u8 oper_class,
 365                                   const struct hostapd_freq_params *freq_params)
 366 {
 367         if (sm->ctx->tdls_enable_channel_switch)
 368                 return sm->ctx->tdls_enable_channel_switch(sm->ctx->ctx, addr,
 369                                                            oper_class,
 370                                                            freq_params);
 371         return -1;
 372 }
 373
 374 static inline int
 375 wpa_sm_tdls_disable_channel_switch(struct wpa_sm *sm, const u8 *addr)
 376 {
 377         if (sm->ctx->tdls_disable_channel_switch)
 378                 return sm->ctx->tdls_disable_channel_switch(sm->ctx->ctx, addr);
 379         return -1;
 380 }
 381 #endif /* CONFIG_TDLS */
 382
 383 static inline int wpa_sm_key_mgmt_set_pmk(struct wpa_sm *sm,
 384                                           const u8 *pmk, size_t pmk_len)
 385 {
 386         if (!sm->ctx->key_mgmt_set_pmk)
 387                 return -1;
 388         return sm->ctx->key_mgmt_set_pmk(sm->ctx->ctx, pmk, pmk_len);
 389 }
 390
 391 static inline void wpa_sm_fils_hlp_rx(struct wpa_sm *sm,
 392                                       const u8 *dst, const u8 *src,
 393                                       const u8 *pkt, size_t pkt_len)
 394 {
 395         if (sm->ctx->fils_hlp_rx)
 396                 sm->ctx->fils_hlp_rx(sm->ctx->ctx, dst, src, pkt, pkt_len);
 397 }
 398
 399 static inline int wpa_sm_channel_info(struct wpa_sm *sm,
 400                                       struct wpa_channel_info *ci)
 401 {
 402         if (!sm->ctx->channel_info)
 403                 return -1;
 404         return sm->ctx->channel_info(sm->ctx->ctx, ci);
 405 }
 406
 407
 408 int wpa_eapol_key_send(struct wpa_sm *sm, struct wpa_ptk *ptk,
 409                        int ver, const u8 *dest, u16 proto,
 410                        u8 *msg, size_t msg_len, u8 *key_mic);
 411 int wpa_supplicant_send_2_of_4(struct wpa_sm *sm, const unsigned char *dst,
 412                                const struct wpa_eapol_key *key,
 413                                int ver, const u8 *nonce,
 414                                const u8 *wpa_ie, size_t wpa_ie_len,
 415                                struct wpa_ptk *ptk);
 416 int wpa_supplicant_send_4_of_4(struct wpa_sm *sm, const unsigned char *dst,
 417                                const struct wpa_eapol_key *key,
 418                                u16 ver, u16 key_info,
 419                                struct wpa_ptk *ptk);
 420
 421 int wpa_derive_ptk_ft(struct wpa_sm *sm, const unsigned char *src_addr,
 422                       const struct wpa_eapol_key *key, struct wpa_ptk *ptk);
 423
 424 void wpa_tdls_assoc(struct wpa_sm *sm);
 425 void wpa_tdls_disassoc(struct wpa_sm *sm);
 426
 427 #endif /* WPA_I_H */