contrib/wpa_supplicant/wpa_supplicant_i.h

   1 #ifndef WPA_SUPPLICANT_I_H
   2 #define WPA_SUPPLICANT_I_H
   3
   4 #include "driver.h"
   5
   6 #ifdef EAPOL_TEST
   7 #include <netinet/in.h>
   8
   9 struct hostapd_radius_server {
  10         struct in_addr addr;
  11         int port;
  12         u8 *shared_secret;
  13         size_t shared_secret_len;
  14 };
  15 #endif /* EAPOL_TEST */
  16
  17 #define PMKID_LEN 16
  18 struct rsn_pmksa_cache {
  19         struct rsn_pmksa_cache *next;
  20         u8 pmkid[PMKID_LEN];
  21         u8 pmk[PMK_LEN];
  22         size_t pmk_len;
  23         time_t expiration;
  24         int akmp; /* WPA_KEY_MGMT_* */
  25         u8 aa[ETH_ALEN];
  26 };
  27
  28 struct rsn_pmksa_candidate {
  29         struct rsn_pmksa_candidate *next;
  30         u8 bssid[ETH_ALEN];
  31         int priority;
  32 };
  33
  34
  35 struct wpa_ptk {
  36         u8 mic_key[16]; /* EAPOL-Key MIC Key (MK) */
  37         u8 encr_key[16]; /* EAPOL-Key Encryption Key (EK) */
  38         u8 tk1[16]; /* Temporal Key 1 (TK1) */
  39         union {
  40                 u8 tk2[16]; /* Temporal Key 2 (TK2) */
  41                 struct {
  42                         u8 tx_mic_key[8];
  43                         u8 rx_mic_key[8];
  44                 } auth;
  45         } u;
  46 } __attribute__ ((packed));
  47
  48
  49 struct wpa_blacklist {
  50         struct wpa_blacklist *next;
  51         u8 bssid[ETH_ALEN];
  52         int count;
  53 };
  54
  55
  56 struct wpa_supplicant {
  57         struct wpa_supplicant *head;
  58         struct wpa_supplicant *next;
  59         struct l2_packet_data *l2;
  60         unsigned char own_addr[ETH_ALEN];
  61         char ifname[100];
  62 #ifdef CONFIG_XSUPPLICANT_IFACE
  63         int dot1x_s; /* socket for connection to Xsupplicant */
  64         int ext_pmk_received; /* 1 = PMK was received from Xsupplicant */
  65 #endif /* CONFIG_XSUPPLICANT_IFACE */
  66
  67         u8 pmk[PMK_LEN];
  68         size_t pmk_len;
  69         u8 snonce[WPA_NONCE_LEN];
  70         u8 anonce[WPA_NONCE_LEN]; /* ANonce from the last 1/4 msg */
  71         struct wpa_ptk ptk, tptk;
  72         int ptk_set, tptk_set;
  73         int renew_snonce;
  74         char *confname;
  75         struct wpa_config *conf;
  76         u8 request_counter[WPA_REPLAY_COUNTER_LEN];
  77         int countermeasures;
  78         time_t last_michael_mic_error;
  79         u8 rx_replay_counter[WPA_REPLAY_COUNTER_LEN];
  80         int rx_replay_counter_set;
  81         u8 bssid[ETH_ALEN];
  82         int reassociate; /* reassociation requested */
  83         struct wpa_ssid *current_ssid;
  84         u8 *ap_wpa_ie, *ap_rsn_ie;
  85         size_t ap_wpa_ie_len, ap_rsn_ie_len;
  86         u8 *assoc_wpa_ie;
  87         size_t assoc_wpa_ie_len;
  88
  89         /* Selected configuration (based on Beacon/ProbeResp WPA IE) */
  90         int proto;
  91         int pairwise_cipher;
  92         int group_cipher;
  93         int key_mgmt;
  94
  95         void *drv_priv; /* private data used by driver_ops */
  96
  97         struct wpa_ssid *prev_scan_ssid; /* previously scanned SSID;
  98                                           * NULL = not yet initialized (start
  99                                           * with broadcast SSID)
 100                                           * BROADCAST_SSID_SCAN = broadcast
 101                                           * SSID was used in the previous scan
 102                                           */
 103 #define BROADCAST_SSID_SCAN ((struct wpa_ssid *) 1)
 104
 105         struct wpa_scan_result *scan_results;
 106         int num_scan_results;
 107
 108         struct wpa_driver_ops *driver;
 109         int interface_removed; /* whether the network interface has been
 110                                 * removed */
 111         struct eapol_sm *eapol;
 112
 113         int ctrl_sock; /* UNIX domain socket for control interface or -1 if
 114                         * not used */
 115         struct wpa_ctrl_dst *ctrl_dst;
 116
 117         enum {
 118                 WPA_DISCONNECTED, WPA_SCANNING, WPA_ASSOCIATING,
 119                 WPA_ASSOCIATED, WPA_4WAY_HANDSHAKE, WPA_GROUP_HANDSHAKE,
 120                 WPA_COMPLETED
 121         } wpa_state;
 122
 123         struct rsn_pmksa_cache *pmksa; /* PMKSA cache */
 124         int pmksa_count; /* number of entries in PMKSA cache */
 125         struct rsn_pmksa_cache *cur_pmksa; /* current PMKSA entry */
 126         struct rsn_pmksa_candidate *pmksa_candidates;
 127
 128         struct l2_packet_data *l2_preauth;
 129         u8 preauth_bssid[ETH_ALEN]; /* current RSN pre-auth peer or
 130                                      * 00:00:00:00:00:00 if no pre-auth is
 131                                      * in progress */
 132         struct eapol_sm *preauth_eapol;
 133
 134         int eapol_received; /* number of EAPOL packets received after the
 135                              * previous association event */
 136
 137         u8 *imsi;
 138         size_t imsi_len;
 139         struct scard_data *scard;
 140
 141         unsigned char last_eapol_src[ETH_ALEN];
 142
 143         int keys_cleared;
 144
 145         struct wpa_blacklist *blacklist;
 146
 147 #ifdef EAPOL_TEST
 148         u8 radius_identifier;
 149         struct radius_msg *last_recv_radius;
 150         struct in_addr own_ip_addr;
 151         struct radius_client_data *radius;
 152
 153         /* RADIUS Authentication and Accounting servers in priority order */
 154         struct hostapd_radius_server *auth_servers, *auth_server;
 155         int num_auth_servers;
 156         struct hostapd_radius_server *acct_servers, *acct_server;
 157         int num_acct_servers;
 158
 159         int radius_retry_primary_interval;
 160         int radius_acct_interim_interval;
 161
 162         u8 *last_eap_radius; /* last received EAP Response from Authentication
 163                               * Server */
 164         size_t last_eap_radius_len;
 165
 166         u8 authenticator_pmk[PMK_LEN];
 167         size_t authenticator_pmk_len;
 168         int radius_access_accept_received;
 169         int radius_access_reject_received;
 170         int auth_timed_out;
 171
 172         u8 *eap_identity;
 173         size_t eap_identity_len;
 174 #endif /* EAPOL_TEST */
 175 };
 176
 177
 178 /* wpa_supplicant.c */
 179 void wpa_supplicant_scan(void *eloop_ctx, void *timeout_ctx);
 180
 181 void wpa_supplicant_req_scan(struct wpa_supplicant *wpa_s, int sec, int usec);
 182
 183 void wpa_supplicant_cancel_scan(struct wpa_supplicant *wpa_s);
 184
 185 void wpa_supplicant_disassociate(struct wpa_supplicant *wpa_s,
 186                                  int reason_code);
 187 void wpa_supplicant_deauthenticate(struct wpa_supplicant *wpa_s,
 188                                    int reason_code);
 189
 190 void wpa_supplicant_req_auth_timeout(struct wpa_supplicant *wpa_s,
 191                                      int sec, int usec);
 192
 193 void wpa_supplicant_cancel_auth_timeout(struct wpa_supplicant *wpa_s);
 194
 195 int wpa_supplicant_reload_configuration(struct wpa_supplicant *wpa_s);
 196
 197 int wpa_supplicant_get_beacon_ie(struct wpa_supplicant *wpa_s);
 198
 199
 200 /* wpa.c */
 201 void wpa_supplicant_key_request(struct wpa_supplicant *wpa_s,
 202                                 int error, int pairwise);
 203
 204 struct wpa_ie_data {
 205         int proto;
 206         int pairwise_cipher;
 207         int group_cipher;
 208         int key_mgmt;
 209         int capabilities;
 210         int num_pmkid;
 211         u8 *pmkid;
 212 };
 213
 214 int wpa_parse_wpa_ie(struct wpa_supplicant *wpa_s, u8 *wpa_ie,
 215                      size_t wpa_ie_len, struct wpa_ie_data *data);
 216
 217 int wpa_gen_wpa_ie(struct wpa_supplicant *wpa_s, u8 *wpa_ie);
 218
 219 void wpa_supplicant_rx_eapol(void *ctx, unsigned char *src_addr,
 220                              unsigned char *buf, size_t len);
 221
 222 struct wpa_ssid * wpa_supplicant_get_ssid(struct wpa_supplicant *wpa_s);
 223
 224 void pmksa_cache_free(struct wpa_supplicant *wpa_s);
 225 struct rsn_pmksa_cache * pmksa_cache_get(struct wpa_supplicant *wpa_s,
 226                                          u8 *aa, u8 *pmkid);
 227 int pmksa_cache_list(struct wpa_supplicant *wpa_s, char *buf, size_t len);
 228 void pmksa_candidate_free(struct wpa_supplicant *wpa_s);
 229
 230 int wpa_get_mib(struct wpa_supplicant *wpa_s, char *buf, size_t buflen);
 231
 232 struct wpa_scan_result;
 233 #ifdef IEEE8021X_EAPOL
 234 int rsn_preauth_init(struct wpa_supplicant *wpa_s, u8 *dst);
 235 void rsn_preauth_deinit(struct wpa_supplicant *wpa_s);
 236 void rsn_preauth_scan_results(struct wpa_supplicant *wpa_s,
 237                               struct wpa_scan_result *results, int count);
 238 void pmksa_candidate_add(struct wpa_supplicant *wpa_s, const u8 *bssid,
 239                          int prio);
 240 #else /* IEEE8021X_EAPOL */
 241 static inline int rsn_preauth_init(struct wpa_supplicant *wpa_s, u8 *dst)
 242 {
 243         return -1;
 244 }
 245
 246 static inline void rsn_preauth_deinit(struct wpa_supplicant *wpa_s)
 247 {
 248 }
 249 static inline void rsn_preauth_scan_results(struct wpa_supplicant *wpa_s,
 250                                             struct wpa_scan_result *results,
 251                                             int count)
 252 {
 253 }
 254
 255 static inline void pmksa_candidate_add(struct wpa_supplicant *wpa_s,
 256                                        const u8 *bssid,
 257                                        int prio)
 258 {
 259 }
 260 #endif /* IEEE8021X_EAPOL */
 261
 262 void wpa_supplicant_notify_eapol_done(void *ctx);
 263
 264 /**
 265  * wpa_eapol_send - send IEEE 802.1X EAPOL packet to the Authenticator
 266  * @ctx: pointer to wpa_supplicant data
 267  * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*)
 268  * @buf: EAPOL payload (after IEEE 802.1X header)
 269  * @len: EAPOL payload length
 270  *
 271  * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame
 272  * to the current Authenticator or in case of pre-authentication, to the peer
 273  * of the authentication.
 274  */
 275 int wpa_eapol_send(void *ctx, int type, u8 *buf, size_t len);
 276 int wpa_eapol_send_preauth(void *ctx, int type, u8 *buf, size_t len);
 277
 278
 279 /* driver_ops */
 280 static inline void * wpa_drv_init(struct wpa_supplicant *wpa_s,
 281                                   const char *ifname)
 282 {
 283         if (wpa_s->driver->init) {
 284                 return wpa_s->driver->init(wpa_s, ifname);
 285         }
 286         return NULL;
 287 }
 288
 289 static inline void wpa_drv_deinit(struct wpa_supplicant *wpa_s)
 290 {
 291         if (wpa_s->driver->deinit)
 292                 wpa_s->driver->deinit(wpa_s->drv_priv);
 293 }
 294
 295 static inline int wpa_drv_set_drop_unencrypted(struct wpa_supplicant *wpa_s,
 296                                                int enabled)
 297 {
 298         if (wpa_s->driver->set_drop_unencrypted) {
 299                 return wpa_s->driver->set_drop_unencrypted(wpa_s->drv_priv,
 300                                                            enabled);
 301         }
 302         return -1;
 303 }
 304
 305 static inline int wpa_drv_set_countermeasures(struct wpa_supplicant *wpa_s,
 306                                               int enabled)
 307 {
 308         if (wpa_s->driver->set_countermeasures) {
 309                 return wpa_s->driver->set_countermeasures(wpa_s->drv_priv,
 310                                                           enabled);
 311         }
 312         return -1;
 313 }
 314
 315 static inline int wpa_drv_set_auth_alg(struct wpa_supplicant *wpa_s,
 316                                        int auth_alg)
 317 {
 318         if (wpa_s->driver->set_auth_alg) {
 319                 return wpa_s->driver->set_auth_alg(wpa_s->drv_priv,
 320                                                    auth_alg);
 321         }
 322         return -1;
 323 }
 324
 325 static inline int wpa_drv_set_wpa(struct wpa_supplicant *wpa_s, int enabled)
 326 {
 327         if (wpa_s->driver->set_wpa) {
 328                 return wpa_s->driver->set_wpa(wpa_s->drv_priv, enabled);
 329         }
 330         return 0;
 331 }
 332
 333 static inline int wpa_drv_associate(struct wpa_supplicant *wpa_s,
 334                                     struct wpa_driver_associate_params *params)
 335 {
 336         if (wpa_s->driver->associate) {
 337                 return wpa_s->driver->associate(wpa_s->drv_priv, params);
 338         }
 339         return -1;
 340 }
 341
 342 static inline int wpa_drv_scan(struct wpa_supplicant *wpa_s, const u8 *ssid,
 343                                size_t ssid_len)
 344 {
 345         if (wpa_s->driver->scan) {
 346                 return wpa_s->driver->scan(wpa_s->drv_priv, ssid, ssid_len);
 347         }
 348         return -1;
 349 }
 350
 351 static inline int wpa_drv_get_scan_results(struct wpa_supplicant *wpa_s,
 352                                            struct wpa_scan_result *results,
 353                                            size_t max_size)
 354 {
 355         if (wpa_s->driver->get_scan_results) {
 356                 return wpa_s->driver->get_scan_results(wpa_s->drv_priv,
 357                                                        results, max_size);
 358         }
 359         return -1;
 360 }
 361
 362 static inline int wpa_drv_get_bssid(struct wpa_supplicant *wpa_s, u8 *bssid)
 363 {
 364         if (wpa_s->driver->get_bssid) {
 365                 return wpa_s->driver->get_bssid(wpa_s->drv_priv, bssid);
 366         }
 367         return -1;
 368 }
 369
 370 static inline int wpa_drv_get_ssid(struct wpa_supplicant *wpa_s, u8 *ssid)
 371 {
 372         if (wpa_s->driver->get_ssid) {
 373                 return wpa_s->driver->get_ssid(wpa_s->drv_priv, ssid);
 374         }
 375         return -1;
 376 }
 377
 378 static inline int wpa_drv_set_key(struct wpa_supplicant *wpa_s, wpa_alg alg,
 379                                    const u8 *addr, int key_idx, int set_tx,
 380                                    const u8 *seq, size_t seq_len,
 381                                    const u8 *key, size_t key_len)
 382 {
 383         if (wpa_s->driver->set_key) {
 384                 return wpa_s->driver->set_key(wpa_s->drv_priv, alg, addr,
 385                                               key_idx, set_tx, seq, seq_len,
 386                                               key, key_len);
 387         }
 388         return -1;
 389 }
 390
 391 static inline int wpa_drv_deauthenticate(struct wpa_supplicant *wpa_s,
 392                                          const u8 *addr, int reason_code)
 393 {
 394         if (wpa_s->driver->deauthenticate) {
 395                 return wpa_s->driver->deauthenticate(wpa_s->drv_priv, addr,
 396                                                      reason_code);
 397         }
 398         return -1;
 399 }
 400
 401 static inline int wpa_drv_disassociate(struct wpa_supplicant *wpa_s,
 402                                        const u8 *addr, int reason_code)
 403 {
 404         if (wpa_s->driver->disassociate) {
 405                 return wpa_s->driver->disassociate(wpa_s->drv_priv, addr,
 406                                                    reason_code);
 407         }
 408         return -1;
 409 }
 410
 411 static inline int wpa_drv_add_pmkid(struct wpa_supplicant *wpa_s,
 412                                     const u8 *bssid, const u8 *pmkid)
 413 {
 414         if (wpa_s->driver->add_pmkid) {
 415                 return wpa_s->driver->add_pmkid(wpa_s->drv_priv, bssid, pmkid);
 416         }
 417         return -1;
 418 }
 419
 420 static inline int wpa_drv_remove_pmkid(struct wpa_supplicant *wpa_s,
 421                                        const u8 *bssid, const u8 *pmkid)
 422 {
 423         if (wpa_s->driver->remove_pmkid) {
 424                 return wpa_s->driver->remove_pmkid(wpa_s->drv_priv, bssid,
 425                                                    pmkid);
 426         }
 427         return -1;
 428 }
 429
 430 static inline int wpa_drv_flush_pmkid(struct wpa_supplicant *wpa_s)
 431 {
 432         if (wpa_s->driver->flush_pmkid) {
 433                 return wpa_s->driver->flush_pmkid(wpa_s->drv_priv);
 434         }
 435         return -1;
 436 }
 437
 438 static inline int wpa_drv_get_capa(struct wpa_supplicant *wpa_s,
 439                                    struct wpa_driver_capa *capa)
 440 {
 441         if (wpa_s->driver->get_capa) {
 442                 return wpa_s->driver->get_capa(wpa_s->drv_priv, capa);
 443         }
 444         return -1;
 445 }
 446
 447 static inline void wpa_drv_poll(struct wpa_supplicant *wpa_s)
 448 {
 449         if (wpa_s->driver->poll) {
 450                 wpa_s->driver->poll(wpa_s->drv_priv);
 451         }
 452 }
 453
 454 static inline const char * wpa_drv_get_ifname(struct wpa_supplicant *wpa_s)
 455 {
 456         if (wpa_s->driver->get_ifname) {
 457                 return wpa_s->driver->get_ifname(wpa_s->drv_priv);
 458         }
 459         return NULL;
 460 }
 461
 462 static inline const u8 * wpa_drv_get_mac_addr(struct wpa_supplicant *wpa_s)
 463 {
 464         if (wpa_s->driver->get_mac_addr) {
 465                 return wpa_s->driver->get_mac_addr(wpa_s->drv_priv);
 466         }
 467         return NULL;
 468 }
 469
 470 #endif /* WPA_SUPPLICANT_I_H */