libeap/wpa_supplicant/wpas_glue.c

   1 /*
   2  * WPA Supplicant - Glue code to setup EAPOL and RSN modules
   3  * Copyright (c) 2003-2015, 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 #include "includes.h"
  10
  11 #include "common.h"
  12 #include "eapol_supp/eapol_supp_sm.h"
  13 #include "rsn_supp/wpa.h"
  14 #include "eloop.h"
  15 #include "config.h"
  16 #include "l2_packet/l2_packet.h"
  17 #include "common/wpa_common.h"
  18 #include "wpa_supplicant_i.h"
  19 #include "driver_i.h"
  20 #include "rsn_supp/pmksa_cache.h"
  21 #include "sme.h"
  22 #include "common/ieee802_11_defs.h"
  23 #include "common/wpa_ctrl.h"
  24 #include "wpas_glue.h"
  25 #include "wps_supplicant.h"
  26 #include "bss.h"
  27 #include "scan.h"
  28 #include "notify.h"
  29 #include "wpas_kay.h"
  30
  31
  32 #ifndef CONFIG_NO_CONFIG_BLOBS
  33 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
  34 static void wpa_supplicant_set_config_blob(void *ctx,
  35                                            struct wpa_config_blob *blob)
  36 {
  37         struct wpa_supplicant *wpa_s = ctx;
  38         wpa_config_set_blob(wpa_s->conf, blob);
  39         if (wpa_s->conf->update_config) {
  40                 int ret = wpa_config_write(wpa_s->confname, wpa_s->conf);
  41                 if (ret) {
  42                         wpa_printf(MSG_DEBUG, "Failed to update config after "
  43                                    "blob set");
  44                 }
  45         }
  46 }
  47
  48
  49 static const struct wpa_config_blob *
  50 wpa_supplicant_get_config_blob(void *ctx, const char *name)
  51 {
  52         struct wpa_supplicant *wpa_s = ctx;
  53         return wpa_config_get_blob(wpa_s->conf, name);
  54 }
  55 #endif /* defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA) */
  56 #endif /* CONFIG_NO_CONFIG_BLOBS */
  57
  58
  59 #if defined(IEEE8021X_EAPOL) || !defined(CONFIG_NO_WPA)
  60 static u8 * wpa_alloc_eapol(const struct wpa_supplicant *wpa_s, u8 type,
  61                             const void *data, u16 data_len,
  62                             size_t *msg_len, void **data_pos)
  63 {
  64         struct ieee802_1x_hdr *hdr;
  65
  66         *msg_len = sizeof(*hdr) + data_len;
  67         hdr = os_malloc(*msg_len);
  68         if (hdr == NULL)
  69                 return NULL;
  70
  71         hdr->version = wpa_s->conf->eapol_version;
  72         hdr->type = type;
  73         hdr->length = host_to_be16(data_len);
  74
  75         if (data)
  76                 os_memcpy(hdr + 1, data, data_len);
  77         else
  78                 os_memset(hdr + 1, 0, data_len);
  79
  80         if (data_pos)
  81                 *data_pos = hdr + 1;
  82
  83         return (u8 *) hdr;
  84 }
  85
  86
  87 /**
  88  * wpa_ether_send - Send Ethernet frame
  89  * @wpa_s: Pointer to wpa_supplicant data
  90  * @dest: Destination MAC address
  91  * @proto: Ethertype in host byte order
  92  * @buf: Frame payload starting from IEEE 802.1X header
  93  * @len: Frame payload length
  94  * Returns: >=0 on success, <0 on failure
  95  */
  96 static int wpa_ether_send(struct wpa_supplicant *wpa_s, const u8 *dest,
  97                           u16 proto, const u8 *buf, size_t len)
  98 {
  99 #ifdef CONFIG_TESTING_OPTIONS
 100         if (wpa_s->ext_eapol_frame_io && proto == ETH_P_EAPOL) {
 101                 size_t hex_len = 2 * len + 1;
 102                 char *hex = os_malloc(hex_len);
 103
 104                 if (hex == NULL)
 105                         return -1;
 106                 wpa_snprintf_hex(hex, hex_len, buf, len);
 107                 wpa_msg(wpa_s, MSG_INFO, "EAPOL-TX " MACSTR " %s",
 108                         MAC2STR(dest), hex);
 109                 os_free(hex);
 110                 return 0;
 111         }
 112 #endif /* CONFIG_TESTING_OPTIONS */
 113
 114         if (wpa_s->l2) {
 115                 return l2_packet_send(wpa_s->l2, dest, proto, buf, len);
 116         }
 117
 118         return -1;
 119 }
 120 #endif /* IEEE8021X_EAPOL || !CONFIG_NO_WPA */
 121
 122
 123 #ifdef IEEE8021X_EAPOL
 124
 125 /**
 126  * wpa_supplicant_eapol_send - Send IEEE 802.1X EAPOL packet to Authenticator
 127  * @ctx: Pointer to wpa_supplicant data (wpa_s)
 128  * @type: IEEE 802.1X packet type (IEEE802_1X_TYPE_*)
 129  * @buf: EAPOL payload (after IEEE 802.1X header)
 130  * @len: EAPOL payload length
 131  * Returns: >=0 on success, <0 on failure
 132  *
 133  * This function adds Ethernet and IEEE 802.1X header and sends the EAPOL frame
 134  * to the current Authenticator.
 135  */
 136 static int wpa_supplicant_eapol_send(void *ctx, int type, const u8 *buf,
 137                                      size_t len)
 138 {
 139         struct wpa_supplicant *wpa_s = ctx;
 140         u8 *msg, *dst, bssid[ETH_ALEN];
 141         size_t msglen;
 142         int res;
 143
 144         /* TODO: could add l2_packet_sendmsg that allows fragments to avoid
 145          * extra copy here */
 146
 147         if (wpa_key_mgmt_wpa_psk(wpa_s->key_mgmt) ||
 148             wpa_s->key_mgmt == WPA_KEY_MGMT_NONE) {
 149                 /* Current SSID is not using IEEE 802.1X/EAP, so drop possible
 150                  * EAPOL frames (mainly, EAPOL-Start) from EAPOL state
 151                  * machines. */
 152                 wpa_printf(MSG_DEBUG, "WPA: drop TX EAPOL in non-IEEE 802.1X "
 153                            "mode (type=%d len=%lu)", type,
 154                            (unsigned long) len);
 155                 return -1;
 156         }
 157
 158         if (pmksa_cache_get_current(wpa_s->wpa) &&
 159             type == IEEE802_1X_TYPE_EAPOL_START) {
 160                 /*
 161                  * We were trying to use PMKSA caching and sending EAPOL-Start
 162                  * would abort that and trigger full EAPOL authentication.
 163                  * However, we've already waited for the AP/Authenticator to
 164                  * start 4-way handshake or EAP authentication, and apparently
 165                  * it has not done so since the startWhen timer has reached zero
 166                  * to get the state machine sending EAPOL-Start. This is not
 167                  * really supposed to happen, but an interoperability issue with
 168                  * a deployed AP has been identified where the connection fails
 169                  * due to that AP failing to operate correctly if PMKID is
 170                  * included in the Association Request frame. To work around
 171                  * this, assume PMKSA caching failed and try to initiate full
 172                  * EAP authentication.
 173                  */
 174                 if (!wpa_s->current_ssid ||
 175                     wpa_s->current_ssid->eap_workaround) {
 176                         wpa_printf(MSG_DEBUG,
 177                                    "RSN: Timeout on waiting for the AP to initiate 4-way handshake for PMKSA caching or EAP authentication - try to force it to start EAP authentication");
 178                 } else {
 179                         wpa_printf(MSG_DEBUG,
 180                                    "RSN: PMKSA caching - do not send EAPOL-Start");
 181                         return -1;
 182                 }
 183         }
 184
 185         if (is_zero_ether_addr(wpa_s->bssid)) {
 186                 wpa_printf(MSG_DEBUG, "BSSID not set when trying to send an "
 187                            "EAPOL frame");
 188                 if (wpa_drv_get_bssid(wpa_s, bssid) == 0 &&
 189                     !is_zero_ether_addr(bssid)) {
 190                         dst = bssid;
 191                         wpa_printf(MSG_DEBUG, "Using current BSSID " MACSTR
 192                                    " from the driver as the EAPOL destination",
 193                                    MAC2STR(dst));
 194                 } else {
 195                         dst = wpa_s->last_eapol_src;
 196                         wpa_printf(MSG_DEBUG, "Using the source address of the"
 197                                    " last received EAPOL frame " MACSTR " as "
 198                                    "the EAPOL destination",
 199                                    MAC2STR(dst));
 200                 }
 201         } else {
 202                 /* BSSID was already set (from (Re)Assoc event, so use it as
 203                  * the EAPOL destination. */
 204                 dst = wpa_s->bssid;
 205         }
 206
 207         msg = wpa_alloc_eapol(wpa_s, type, buf, len, &msglen, NULL);
 208         if (msg == NULL)
 209                 return -1;
 210
 211         wpa_printf(MSG_DEBUG, "TX EAPOL: dst=" MACSTR, MAC2STR(dst));
 212         wpa_hexdump(MSG_MSGDUMP, "TX EAPOL", msg, msglen);
 213         res = wpa_ether_send(wpa_s, dst, ETH_P_EAPOL, msg, msglen);
 214         os_free(msg);
 215         return res;
 216 }
 217
 218
 219 /**
 220  * wpa_eapol_set_wep_key - set WEP key for the driver
 221  * @ctx: Pointer to wpa_supplicant data (wpa_s)
 222  * @unicast: 1 = individual unicast key, 0 = broadcast key
 223  * @keyidx: WEP key index (0..3)
 224  * @key: Pointer to key data
 225  * @keylen: Key length in bytes
 226  * Returns: 0 on success or < 0 on error.
 227  */
 228 static int wpa_eapol_set_wep_key(void *ctx, int unicast, int keyidx,
 229                                  const u8 *key, size_t keylen)
 230 {
 231         struct wpa_supplicant *wpa_s = ctx;
 232         if (wpa_s->key_mgmt == WPA_KEY_MGMT_IEEE8021X_NO_WPA) {
 233                 int cipher = (keylen == 5) ? WPA_CIPHER_WEP40 :
 234                         WPA_CIPHER_WEP104;
 235                 if (unicast)
 236                         wpa_s->pairwise_cipher = cipher;
 237                 else
 238                         wpa_s->group_cipher = cipher;
 239         }
 240         return wpa_drv_set_key(wpa_s, WPA_ALG_WEP,
 241                                unicast ? wpa_s->bssid : NULL,
 242                                keyidx, unicast, NULL, 0, key, keylen);
 243 }
 244
 245
 246 static void wpa_supplicant_aborted_cached(void *ctx)
 247 {
 248         struct wpa_supplicant *wpa_s = ctx;
 249         wpa_sm_aborted_cached(wpa_s->wpa);
 250 }
 251
 252
 253 static const char * result_str(enum eapol_supp_result result)
 254 {
 255         switch (result) {
 256         case EAPOL_SUPP_RESULT_FAILURE:
 257                 return "FAILURE";
 258         case EAPOL_SUPP_RESULT_SUCCESS:
 259                 return "SUCCESS";
 260         case EAPOL_SUPP_RESULT_EXPECTED_FAILURE:
 261                 return "EXPECTED_FAILURE";
 262         }
 263         return "?";
 264 }
 265
 266
 267 static void wpa_supplicant_eapol_cb(struct eapol_sm *eapol,
 268                                     enum eapol_supp_result result,
 269                                     void *ctx)
 270 {
 271         struct wpa_supplicant *wpa_s = ctx;
 272         int res, pmk_len;
 273         u8 pmk[PMK_LEN];
 274
 275         wpa_printf(MSG_DEBUG, "EAPOL authentication completed - result=%s",
 276                    result_str(result));
 277
 278         if (wpas_wps_eapol_cb(wpa_s) > 0)
 279                 return;
 280
 281         wpa_s->eap_expected_failure = result ==
 282                 EAPOL_SUPP_RESULT_EXPECTED_FAILURE;
 283
 284         if (result != EAPOL_SUPP_RESULT_SUCCESS) {
 285                 /*
 286                  * Make sure we do not get stuck here waiting for long EAPOL
 287                  * timeout if the AP does not disconnect in case of
 288                  * authentication failure.
 289                  */
 290                 wpa_supplicant_req_auth_timeout(wpa_s, 2, 0);
 291         } else {
 292                 ieee802_1x_notify_create_actor(wpa_s, wpa_s->last_eapol_src);
 293         }
 294
 295         if (result != EAPOL_SUPP_RESULT_SUCCESS ||
 296             !(wpa_s->drv_flags & WPA_DRIVER_FLAGS_4WAY_HANDSHAKE))
 297                 return;
 298
 299         if (!wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt))
 300                 return;
 301
 302         wpa_printf(MSG_DEBUG, "Configure PMK for driver-based RSN 4-way "
 303                    "handshake");
 304
 305         pmk_len = PMK_LEN;
 306         if (wpa_key_mgmt_ft(wpa_s->key_mgmt)) {
 307 #ifdef CONFIG_IEEE80211R
 308                 u8 buf[2 * PMK_LEN];
 309                 wpa_printf(MSG_DEBUG, "RSN: Use FT XXKey as PMK for "
 310                            "driver-based 4-way hs and FT");
 311                 res = eapol_sm_get_key(eapol, buf, 2 * PMK_LEN);
 312                 if (res == 0) {
 313                         os_memcpy(pmk, buf + PMK_LEN, PMK_LEN);
 314                         os_memset(buf, 0, sizeof(buf));
 315                 }
 316 #else /* CONFIG_IEEE80211R */
 317                 res = -1;
 318 #endif /* CONFIG_IEEE80211R */
 319         } else {
 320                 res = eapol_sm_get_key(eapol, pmk, PMK_LEN);
 321                 if (res) {
 322                         /*
 323                          * EAP-LEAP is an exception from other EAP methods: it
 324                          * uses only 16-byte PMK.
 325                          */
 326                         res = eapol_sm_get_key(eapol, pmk, 16);
 327                         pmk_len = 16;
 328                 }
 329         }
 330
 331         if (res) {
 332                 wpa_printf(MSG_DEBUG, "Failed to get PMK from EAPOL state "
 333                            "machines");
 334                 return;
 335         }
 336
 337         wpa_hexdump_key(MSG_DEBUG, "RSN: Configure PMK for driver-based 4-way "
 338                         "handshake", pmk, pmk_len);
 339
 340         if (wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0, NULL, 0, pmk,
 341                             pmk_len)) {
 342                 wpa_printf(MSG_DEBUG, "Failed to set PMK to the driver");
 343         }
 344
 345         wpa_supplicant_cancel_scan(wpa_s);
 346         wpa_supplicant_cancel_auth_timeout(wpa_s);
 347         wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 348
 349 }
 350
 351
 352 static void wpa_supplicant_notify_eapol_done(void *ctx)
 353 {
 354         struct wpa_supplicant *wpa_s = ctx;
 355         wpa_msg(wpa_s, MSG_DEBUG, "WPA: EAPOL processing complete");
 356         if (wpa_key_mgmt_wpa_ieee8021x(wpa_s->key_mgmt)) {
 357                 wpa_supplicant_set_state(wpa_s, WPA_4WAY_HANDSHAKE);
 358         } else {
 359                 wpa_supplicant_cancel_auth_timeout(wpa_s);
 360                 wpa_supplicant_set_state(wpa_s, WPA_COMPLETED);
 361         }
 362 }
 363
 364 #endif /* IEEE8021X_EAPOL */
 365
 366
 367 #ifndef CONFIG_NO_WPA
 368
 369 static int wpa_get_beacon_ie(struct wpa_supplicant *wpa_s)
 370 {
 371         int ret = 0;
 372         struct wpa_bss *curr = NULL, *bss;
 373         struct wpa_ssid *ssid = wpa_s->current_ssid;
 374         const u8 *ie;
 375
 376         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
 377                 if (os_memcmp(bss->bssid, wpa_s->bssid, ETH_ALEN) != 0)
 378                         continue;
 379                 if (ssid == NULL ||
 380                     ((bss->ssid_len == ssid->ssid_len &&
 381                       os_memcmp(bss->ssid, ssid->ssid, ssid->ssid_len) == 0) ||
 382                      ssid->ssid_len == 0)) {
 383                         curr = bss;
 384                         break;
 385                 }
 386         }
 387
 388         if (curr) {
 389                 ie = wpa_bss_get_vendor_ie(curr, WPA_IE_VENDOR_TYPE);
 390                 if (wpa_sm_set_ap_wpa_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
 391                         ret = -1;
 392
 393                 ie = wpa_bss_get_ie(curr, WLAN_EID_RSN);
 394                 if (wpa_sm_set_ap_rsn_ie(wpa_s->wpa, ie, ie ? 2 + ie[1] : 0))
 395                         ret = -1;
 396         } else {
 397                 ret = -1;
 398         }
 399
 400         return ret;
 401 }
 402
 403
 404 static int wpa_supplicant_get_beacon_ie(void *ctx)
 405 {
 406         struct wpa_supplicant *wpa_s = ctx;
 407         if (wpa_get_beacon_ie(wpa_s) == 0) {
 408                 return 0;
 409         }
 410
 411         /* No WPA/RSN IE found in the cached scan results. Try to get updated
 412          * scan results from the driver. */
 413         if (wpa_supplicant_update_scan_results(wpa_s) < 0)
 414                 return -1;
 415
 416         return wpa_get_beacon_ie(wpa_s);
 417 }
 418
 419
 420 static u8 * _wpa_alloc_eapol(void *wpa_s, u8 type,
 421                              const void *data, u16 data_len,
 422                              size_t *msg_len, void **data_pos)
 423 {
 424         return wpa_alloc_eapol(wpa_s, type, data, data_len, msg_len, data_pos);
 425 }
 426
 427
 428 static int _wpa_ether_send(void *wpa_s, const u8 *dest, u16 proto,
 429                            const u8 *buf, size_t len)
 430 {
 431         return wpa_ether_send(wpa_s, dest, proto, buf, len);
 432 }
 433
 434
 435 static void _wpa_supplicant_cancel_auth_timeout(void *wpa_s)
 436 {
 437         wpa_supplicant_cancel_auth_timeout(wpa_s);
 438 }
 439
 440
 441 static void _wpa_supplicant_set_state(void *wpa_s, enum wpa_states state)
 442 {
 443         wpa_supplicant_set_state(wpa_s, state);
 444 }
 445
 446
 447 /**
 448  * wpa_supplicant_get_state - Get the connection state
 449  * @wpa_s: Pointer to wpa_supplicant data
 450  * Returns: The current connection state (WPA_*)
 451  */
 452 static enum wpa_states wpa_supplicant_get_state(struct wpa_supplicant *wpa_s)
 453 {
 454         return wpa_s->wpa_state;
 455 }
 456
 457
 458 static enum wpa_states _wpa_supplicant_get_state(void *wpa_s)
 459 {
 460         return wpa_supplicant_get_state(wpa_s);
 461 }
 462
 463
 464 static void _wpa_supplicant_deauthenticate(void *wpa_s, int reason_code)
 465 {
 466         wpa_supplicant_deauthenticate(wpa_s, reason_code);
 467         /* Schedule a scan to make sure we continue looking for networks */
 468         wpa_supplicant_req_scan(wpa_s, 5, 0);
 469 }
 470
 471
 472 static void * wpa_supplicant_get_network_ctx(void *wpa_s)
 473 {
 474         return wpa_supplicant_get_ssid(wpa_s);
 475 }
 476
 477
 478 static int wpa_supplicant_get_bssid(void *ctx, u8 *bssid)
 479 {
 480         struct wpa_supplicant *wpa_s = ctx;
 481         return wpa_drv_get_bssid(wpa_s, bssid);
 482 }
 483
 484
 485 static int wpa_supplicant_set_key(void *_wpa_s, enum wpa_alg alg,
 486                                   const u8 *addr, int key_idx, int set_tx,
 487                                   const u8 *seq, size_t seq_len,
 488                                   const u8 *key, size_t key_len)
 489 {
 490         struct wpa_supplicant *wpa_s = _wpa_s;
 491         if (alg == WPA_ALG_TKIP && key_idx == 0 && key_len == 32) {
 492                 /* Clear the MIC error counter when setting a new PTK. */
 493                 wpa_s->mic_errors_seen = 0;
 494         }
 495 #ifdef CONFIG_TESTING_GET_GTK
 496         if (key_idx > 0 && addr && is_broadcast_ether_addr(addr) &&
 497             alg != WPA_ALG_NONE && key_len <= sizeof(wpa_s->last_gtk)) {
 498                 os_memcpy(wpa_s->last_gtk, key, key_len);
 499                 wpa_s->last_gtk_len = key_len;
 500         }
 501 #endif /* CONFIG_TESTING_GET_GTK */
 502         return wpa_drv_set_key(wpa_s, alg, addr, key_idx, set_tx, seq, seq_len,
 503                                key, key_len);
 504 }
 505
 506
 507 static int wpa_supplicant_mlme_setprotection(void *wpa_s, const u8 *addr,
 508                                              int protection_type,
 509                                              int key_type)
 510 {
 511         return wpa_drv_mlme_setprotection(wpa_s, addr, protection_type,
 512                                           key_type);
 513 }
 514
 515
 516 static int wpa_supplicant_add_pmkid(void *wpa_s,
 517                                     const u8 *bssid, const u8 *pmkid)
 518 {
 519         return wpa_drv_add_pmkid(wpa_s, bssid, pmkid);
 520 }
 521
 522
 523 static int wpa_supplicant_remove_pmkid(void *wpa_s,
 524                                        const u8 *bssid, const u8 *pmkid)
 525 {
 526         return wpa_drv_remove_pmkid(wpa_s, bssid, pmkid);
 527 }
 528
 529
 530 #ifdef CONFIG_IEEE80211R
 531 static int wpa_supplicant_update_ft_ies(void *ctx, const u8 *md,
 532                                         const u8 *ies, size_t ies_len)
 533 {
 534         struct wpa_supplicant *wpa_s = ctx;
 535         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_SME)
 536                 return sme_update_ft_ies(wpa_s, md, ies, ies_len);
 537         return wpa_drv_update_ft_ies(wpa_s, md, ies, ies_len);
 538 }
 539
 540
 541 static int wpa_supplicant_send_ft_action(void *ctx, u8 action,
 542                                          const u8 *target_ap,
 543                                          const u8 *ies, size_t ies_len)
 544 {
 545         struct wpa_supplicant *wpa_s = ctx;
 546         int ret;
 547         u8 *data, *pos;
 548         size_t data_len;
 549
 550         if (action != 1) {
 551                 wpa_printf(MSG_ERROR, "Unsupported send_ft_action action %d",
 552                            action);
 553                 return -1;
 554         }
 555
 556         /*
 557          * Action frame payload:
 558          * Category[1] = 6 (Fast BSS Transition)
 559          * Action[1] = 1 (Fast BSS Transition Request)
 560          * STA Address
 561          * Target AP Address
 562          * FT IEs
 563          */
 564
 565         data_len = 2 + 2 * ETH_ALEN + ies_len;
 566         data = os_malloc(data_len);
 567         if (data == NULL)
 568                 return -1;
 569         pos = data;
 570         *pos++ = 0x06; /* FT Action category */
 571         *pos++ = action;
 572         os_memcpy(pos, wpa_s->own_addr, ETH_ALEN);
 573         pos += ETH_ALEN;
 574         os_memcpy(pos, target_ap, ETH_ALEN);
 575         pos += ETH_ALEN;
 576         os_memcpy(pos, ies, ies_len);
 577
 578         ret = wpa_drv_send_action(wpa_s, wpa_s->assoc_freq, 0,
 579                                   wpa_s->bssid, wpa_s->own_addr, wpa_s->bssid,
 580                                   data, data_len, 0);
 581         os_free(data);
 582
 583         return ret;
 584 }
 585
 586
 587 static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap)
 588 {
 589         struct wpa_supplicant *wpa_s = ctx;
 590         struct wpa_driver_auth_params params;
 591         struct wpa_bss *bss;
 592
 593         bss = wpa_bss_get_bssid(wpa_s, target_ap);
 594         if (bss == NULL)
 595                 return -1;
 596
 597         os_memset(&params, 0, sizeof(params));
 598         params.bssid = target_ap;
 599         params.freq = bss->freq;
 600         params.ssid = bss->ssid;
 601         params.ssid_len = bss->ssid_len;
 602         params.auth_alg = WPA_AUTH_ALG_FT;
 603         params.local_state_change = 1;
 604         return wpa_drv_authenticate(wpa_s, &params);
 605 }
 606 #endif /* CONFIG_IEEE80211R */
 607
 608
 609 #ifdef CONFIG_TDLS
 610
 611 static int wpa_supplicant_tdls_get_capa(void *ctx, int *tdls_supported,
 612                                         int *tdls_ext_setup,
 613                                         int *tdls_chan_switch)
 614 {
 615         struct wpa_supplicant *wpa_s = ctx;
 616
 617         *tdls_supported = 0;
 618         *tdls_ext_setup = 0;
 619         *tdls_chan_switch = 0;
 620
 621         if (!wpa_s->drv_capa_known)
 622                 return -1;
 623
 624         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)
 625                 *tdls_supported = 1;
 626
 627         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP)
 628                 *tdls_ext_setup = 1;
 629
 630         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_CHANNEL_SWITCH)
 631                 *tdls_chan_switch = 1;
 632
 633         return 0;
 634 }
 635
 636
 637 static int wpa_supplicant_send_tdls_mgmt(void *ctx, const u8 *dst,
 638                                          u8 action_code, u8 dialog_token,
 639                                          u16 status_code, u32 peer_capab,
 640                                          int initiator, const u8 *buf,
 641                                          size_t len)
 642 {
 643         struct wpa_supplicant *wpa_s = ctx;
 644         return wpa_drv_send_tdls_mgmt(wpa_s, dst, action_code, dialog_token,
 645                                       status_code, peer_capab, initiator, buf,
 646                                       len);
 647 }
 648
 649
 650 static int wpa_supplicant_tdls_oper(void *ctx, int oper, const u8 *peer)
 651 {
 652         struct wpa_supplicant *wpa_s = ctx;
 653         return wpa_drv_tdls_oper(wpa_s, oper, peer);
 654 }
 655
 656
 657 static int wpa_supplicant_tdls_peer_addset(
 658         void *ctx, const u8 *peer, int add, u16 aid, u16 capability,
 659         const u8 *supp_rates, size_t supp_rates_len,
 660         const struct ieee80211_ht_capabilities *ht_capab,
 661         const struct ieee80211_vht_capabilities *vht_capab,
 662         u8 qosinfo, int wmm, const u8 *ext_capab, size_t ext_capab_len,
 663         const u8 *supp_channels, size_t supp_channels_len,
 664         const u8 *supp_oper_classes, size_t supp_oper_classes_len)
 665 {
 666         struct wpa_supplicant *wpa_s = ctx;
 667         struct hostapd_sta_add_params params;
 668
 669         os_memset(&params, 0, sizeof(params));
 670
 671         params.addr = peer;
 672         params.aid = aid;
 673         params.capability = capability;
 674         params.flags = WPA_STA_TDLS_PEER | WPA_STA_AUTHORIZED;
 675
 676         /*
 677          * Don't rely only on qosinfo for WMM capability. It may be 0 even when
 678          * present. Allow the WMM IE to also indicate QoS support.
 679          */
 680         if (wmm || qosinfo)
 681                 params.flags |= WPA_STA_WMM;
 682
 683         params.ht_capabilities = ht_capab;
 684         params.vht_capabilities = vht_capab;
 685         params.qosinfo = qosinfo;
 686         params.listen_interval = 0;
 687         params.supp_rates = supp_rates;
 688         params.supp_rates_len = supp_rates_len;
 689         params.set = !add;
 690         params.ext_capab = ext_capab;
 691         params.ext_capab_len = ext_capab_len;
 692         params.supp_channels = supp_channels;
 693         params.supp_channels_len = supp_channels_len;
 694         params.supp_oper_classes = supp_oper_classes;
 695         params.supp_oper_classes_len = supp_oper_classes_len;
 696
 697         return wpa_drv_sta_add(wpa_s, &params);
 698 }
 699
 700
 701 static int wpa_supplicant_tdls_enable_channel_switch(
 702         void *ctx, const u8 *addr, u8 oper_class,
 703         const struct hostapd_freq_params *params)
 704 {
 705         struct wpa_supplicant *wpa_s = ctx;
 706
 707         return wpa_drv_tdls_enable_channel_switch(wpa_s, addr, oper_class,
 708                                                   params);
 709 }
 710
 711
 712 static int wpa_supplicant_tdls_disable_channel_switch(void *ctx, const u8 *addr)
 713 {
 714         struct wpa_supplicant *wpa_s = ctx;
 715
 716         return wpa_drv_tdls_disable_channel_switch(wpa_s, addr);
 717 }
 718
 719 #endif /* CONFIG_TDLS */
 720
 721 #endif /* CONFIG_NO_WPA */
 722
 723
 724 enum wpa_ctrl_req_type wpa_supplicant_ctrl_req_from_string(const char *field)
 725 {
 726         if (os_strcmp(field, "IDENTITY") == 0)
 727                 return WPA_CTRL_REQ_EAP_IDENTITY;
 728         else if (os_strcmp(field, "PASSWORD") == 0)
 729                 return WPA_CTRL_REQ_EAP_PASSWORD;
 730         else if (os_strcmp(field, "NEW_PASSWORD") == 0)
 731                 return WPA_CTRL_REQ_EAP_NEW_PASSWORD;
 732         else if (os_strcmp(field, "PIN") == 0)
 733                 return WPA_CTRL_REQ_EAP_PIN;
 734         else if (os_strcmp(field, "OTP") == 0)
 735                 return WPA_CTRL_REQ_EAP_OTP;
 736         else if (os_strcmp(field, "PASSPHRASE") == 0)
 737                 return WPA_CTRL_REQ_EAP_PASSPHRASE;
 738         else if (os_strcmp(field, "SIM") == 0)
 739                 return WPA_CTRL_REQ_SIM;
 740         else if (os_strcmp(field, "PSK_PASSPHRASE") == 0)
 741                 return WPA_CTRL_REQ_PSK_PASSPHRASE;
 742         return WPA_CTRL_REQ_UNKNOWN;
 743 }
 744
 745
 746 const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field,
 747                                                const char *default_txt,
 748                                                const char **txt)
 749 {
 750         const char *ret = NULL;
 751
 752         *txt = default_txt;
 753
 754         switch (field) {
 755         case WPA_CTRL_REQ_EAP_IDENTITY:
 756                 *txt = "Identity";
 757                 ret = "IDENTITY";
 758                 break;
 759         case WPA_CTRL_REQ_EAP_PASSWORD:
 760                 *txt = "Password";
 761                 ret = "PASSWORD";
 762                 break;
 763         case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
 764                 *txt = "New Password";
 765                 ret = "NEW_PASSWORD";
 766                 break;
 767         case WPA_CTRL_REQ_EAP_PIN:
 768                 *txt = "PIN";
 769                 ret = "PIN";
 770                 break;
 771         case WPA_CTRL_REQ_EAP_OTP:
 772                 ret = "OTP";
 773                 break;
 774         case WPA_CTRL_REQ_EAP_PASSPHRASE:
 775                 *txt = "Private key passphrase";
 776                 ret = "PASSPHRASE";
 777                 break;
 778         case WPA_CTRL_REQ_SIM:
 779                 ret = "SIM";
 780                 break;
 781         case WPA_CTRL_REQ_PSK_PASSPHRASE:
 782                 *txt = "PSK or passphrase";
 783                 ret = "PSK_PASSPHRASE";
 784                 break;
 785         default:
 786                 break;
 787         }
 788
 789         /* txt needs to be something */
 790         if (*txt == NULL) {
 791                 wpa_printf(MSG_WARNING, "No message for request %d", field);
 792                 ret = NULL;
 793         }
 794
 795         return ret;
 796 }
 797
 798
 799 void wpas_send_ctrl_req(struct wpa_supplicant *wpa_s, struct wpa_ssid *ssid,
 800                         const char *field_name, const char *txt)
 801 {
 802         char *buf;
 803         size_t buflen;
 804         int len;
 805
 806         buflen = 100 + os_strlen(txt) + ssid->ssid_len;
 807         buf = os_malloc(buflen);
 808         if (buf == NULL)
 809                 return;
 810         len = os_snprintf(buf, buflen, "%s-%d:%s needed for SSID ",
 811                           field_name, ssid->id, txt);
 812         if (os_snprintf_error(buflen, len)) {
 813                 os_free(buf);
 814                 return;
 815         }
 816         if (ssid->ssid && buflen > len + ssid->ssid_len) {
 817                 os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
 818                 len += ssid->ssid_len;
 819                 buf[len] = '\0';
 820         }
 821         buf[buflen - 1] = '\0';
 822         wpa_msg(wpa_s, MSG_INFO, WPA_CTRL_REQ "%s", buf);
 823         os_free(buf);
 824 }
 825
 826
 827 #ifdef IEEE8021X_EAPOL
 828 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
 829 static void wpa_supplicant_eap_param_needed(void *ctx,
 830                                             enum wpa_ctrl_req_type field,
 831                                             const char *default_txt)
 832 {
 833         struct wpa_supplicant *wpa_s = ctx;
 834         struct wpa_ssid *ssid = wpa_s->current_ssid;
 835         const char *field_name, *txt = NULL;
 836
 837         if (ssid == NULL)
 838                 return;
 839
 840         wpas_notify_network_request(wpa_s, ssid, field, default_txt);
 841
 842         field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt,
 843                                                        &txt);
 844         if (field_name == NULL) {
 845                 wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed",
 846                            field);
 847                 return;
 848         }
 849
 850         wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name);
 851
 852         wpas_send_ctrl_req(wpa_s, ssid, field_name, txt);
 853 }
 854 #else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 855 #define wpa_supplicant_eap_param_needed NULL
 856 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 857
 858
 859 #ifdef CONFIG_EAP_PROXY
 860 static void wpa_supplicant_eap_proxy_cb(void *ctx)
 861 {
 862         struct wpa_supplicant *wpa_s = ctx;
 863         size_t len;
 864
 865         wpa_s->mnc_len = eapol_sm_get_eap_proxy_imsi(wpa_s->eapol,
 866                                                      wpa_s->imsi, &len);
 867         if (wpa_s->mnc_len > 0) {
 868                 wpa_s->imsi[len] = '\0';
 869                 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI %s (MNC length %d)",
 870                            wpa_s->imsi, wpa_s->mnc_len);
 871         } else {
 872                 wpa_printf(MSG_DEBUG, "eap_proxy: IMSI not available");
 873         }
 874 }
 875 #endif /* CONFIG_EAP_PROXY */
 876
 877
 878 static void wpa_supplicant_port_cb(void *ctx, int authorized)
 879 {
 880         struct wpa_supplicant *wpa_s = ctx;
 881 #ifdef CONFIG_AP
 882         if (wpa_s->ap_iface) {
 883                 wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant "
 884                            "port status: %s",
 885                            authorized ? "Authorized" : "Unauthorized");
 886                 return;
 887         }
 888 #endif /* CONFIG_AP */
 889         wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s",
 890                    authorized ? "Authorized" : "Unauthorized");
 891         wpa_drv_set_supp_port(wpa_s, authorized);
 892 }
 893
 894
 895 static void wpa_supplicant_cert_cb(void *ctx, int depth, const char *subject,
 896                                    const char *altsubject[], int num_altsubject,
 897                                    const char *cert_hash,
 898                                    const struct wpabuf *cert)
 899 {
 900         struct wpa_supplicant *wpa_s = ctx;
 901
 902         wpas_notify_certification(wpa_s, depth, subject, altsubject,
 903                                   num_altsubject, cert_hash, cert);
 904 }
 905
 906
 907 static void wpa_supplicant_status_cb(void *ctx, const char *status,
 908                                      const char *parameter)
 909 {
 910         struct wpa_supplicant *wpa_s = ctx;
 911
 912         wpas_notify_eap_status(wpa_s, status, parameter);
 913 }
 914
 915
 916 static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len)
 917 {
 918         struct wpa_supplicant *wpa_s = ctx;
 919         char *str;
 920         int res;
 921
 922         wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity",
 923                           id, len);
 924
 925         if (wpa_s->current_ssid == NULL)
 926                 return;
 927
 928         if (id == NULL) {
 929                 if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
 930                                    "NULL", 0) < 0)
 931                         return;
 932         } else {
 933                 str = os_malloc(len * 2 + 1);
 934                 if (str == NULL)
 935                         return;
 936                 wpa_snprintf_hex(str, len * 2 + 1, id, len);
 937                 res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
 938                                      str, 0);
 939                 os_free(str);
 940                 if (res < 0)
 941                         return;
 942         }
 943
 944         if (wpa_s->conf->update_config) {
 945                 res = wpa_config_write(wpa_s->confname, wpa_s->conf);
 946                 if (res) {
 947                         wpa_printf(MSG_DEBUG, "Failed to update config after "
 948                                    "anonymous_id update");
 949                 }
 950         }
 951 }
 952 #endif /* IEEE8021X_EAPOL */
 953
 954
 955 int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s)
 956 {
 957 #ifdef IEEE8021X_EAPOL
 958         struct eapol_ctx *ctx;
 959         ctx = os_zalloc(sizeof(*ctx));
 960         if (ctx == NULL) {
 961                 wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context.");
 962                 return -1;
 963         }
 964
 965         ctx->ctx = wpa_s;
 966         ctx->msg_ctx = wpa_s;
 967         ctx->eapol_send_ctx = wpa_s;
 968         ctx->preauth = 0;
 969         ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done;
 970         ctx->eapol_send = wpa_supplicant_eapol_send;
 971         ctx->set_wep_key = wpa_eapol_set_wep_key;
 972 #ifndef CONFIG_NO_CONFIG_BLOBS
 973         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 974         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 975 #endif /* CONFIG_NO_CONFIG_BLOBS */
 976         ctx->aborted_cached = wpa_supplicant_aborted_cached;
 977         ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
 978         ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
 979         ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
 980         ctx->openssl_ciphers = wpa_s->conf->openssl_ciphers;
 981         ctx->wps = wpa_s->wps;
 982         ctx->eap_param_needed = wpa_supplicant_eap_param_needed;
 983 #ifdef CONFIG_EAP_PROXY
 984         ctx->eap_proxy_cb = wpa_supplicant_eap_proxy_cb;
 985 #endif /* CONFIG_EAP_PROXY */
 986         ctx->port_cb = wpa_supplicant_port_cb;
 987         ctx->cb = wpa_supplicant_eapol_cb;
 988         ctx->cert_cb = wpa_supplicant_cert_cb;
 989         ctx->cert_in_cb = wpa_s->conf->cert_in_cb;
 990         ctx->status_cb = wpa_supplicant_status_cb;
 991         ctx->set_anon_id = wpa_supplicant_set_anon_id;
 992         ctx->cb_ctx = wpa_s;
 993         wpa_s->eapol = eapol_sm_init(ctx);
 994         if (wpa_s->eapol == NULL) {
 995                 os_free(ctx);
 996                 wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state "
 997                            "machines.");
 998                 return -1;
 999         }
1000 #endif /* IEEE8021X_EAPOL */
1001
1002         return 0;
1003 }
1004
1005
1006 #ifndef CONFIG_NO_WPA
1007 static void wpa_supplicant_set_rekey_offload(void *ctx,
1008                                              const u8 *kek, size_t kek_len,
1009                                              const u8 *kck, size_t kck_len,
1010                                              const u8 *replay_ctr)
1011 {
1012         struct wpa_supplicant *wpa_s = ctx;
1013
1014         wpa_drv_set_rekey_info(wpa_s, kek, kek_len, kck, kck_len, replay_ctr);
1015 }
1016 #endif /* CONFIG_NO_WPA */
1017
1018
1019 static int wpa_supplicant_key_mgmt_set_pmk(void *ctx, const u8 *pmk,
1020                                            size_t pmk_len)
1021 {
1022         struct wpa_supplicant *wpa_s = ctx;
1023
1024         if (wpa_s->conf->key_mgmt_offload &&
1025             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_KEY_MGMT_OFFLOAD))
1026                 return wpa_drv_set_key(wpa_s, WPA_ALG_PMK, NULL, 0, 0,
1027                                        NULL, 0, pmk, pmk_len);
1028         else
1029                 return 0;
1030 }
1031
1032
1033 int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s)
1034 {
1035 #ifndef CONFIG_NO_WPA
1036         struct wpa_sm_ctx *ctx;
1037         ctx = os_zalloc(sizeof(*ctx));
1038         if (ctx == NULL) {
1039                 wpa_printf(MSG_ERROR, "Failed to allocate WPA context.");
1040                 return -1;
1041         }
1042
1043         ctx->ctx = wpa_s;
1044         ctx->msg_ctx = wpa_s;
1045         ctx->set_state = _wpa_supplicant_set_state;
1046         ctx->get_state = _wpa_supplicant_get_state;
1047         ctx->deauthenticate = _wpa_supplicant_deauthenticate;
1048         ctx->set_key = wpa_supplicant_set_key;
1049         ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
1050         ctx->get_bssid = wpa_supplicant_get_bssid;
1051         ctx->ether_send = _wpa_ether_send;
1052         ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
1053         ctx->alloc_eapol = _wpa_alloc_eapol;
1054         ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
1055         ctx->add_pmkid = wpa_supplicant_add_pmkid;
1056         ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
1057 #ifndef CONFIG_NO_CONFIG_BLOBS
1058         ctx->set_config_blob = wpa_supplicant_set_config_blob;
1059         ctx->get_config_blob = wpa_supplicant_get_config_blob;
1060 #endif /* CONFIG_NO_CONFIG_BLOBS */
1061         ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
1062 #ifdef CONFIG_IEEE80211R
1063         ctx->update_ft_ies = wpa_supplicant_update_ft_ies;
1064         ctx->send_ft_action = wpa_supplicant_send_ft_action;
1065         ctx->mark_authenticated = wpa_supplicant_mark_authenticated;
1066 #endif /* CONFIG_IEEE80211R */
1067 #ifdef CONFIG_TDLS
1068         ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa;
1069         ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt;
1070         ctx->tdls_oper = wpa_supplicant_tdls_oper;
1071         ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset;
1072         ctx->tdls_enable_channel_switch =
1073                 wpa_supplicant_tdls_enable_channel_switch;
1074         ctx->tdls_disable_channel_switch =
1075                 wpa_supplicant_tdls_disable_channel_switch;
1076 #endif /* CONFIG_TDLS */
1077         ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload;
1078         ctx->key_mgmt_set_pmk = wpa_supplicant_key_mgmt_set_pmk;
1079
1080         wpa_s->wpa = wpa_sm_init(ctx);
1081         if (wpa_s->wpa == NULL) {
1082                 wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
1083                            "machine");
1084                 os_free(ctx);
1085                 return -1;
1086         }
1087 #endif /* CONFIG_NO_WPA */
1088
1089         return 0;
1090 }
1091
1092
1093 void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s,
1094                                         struct wpa_ssid *ssid)
1095 {
1096         struct rsn_supp_config conf;
1097         if (ssid) {
1098                 os_memset(&conf, 0, sizeof(conf));
1099                 conf.network_ctx = ssid;
1100                 conf.peerkey_enabled = ssid->peerkey;
1101                 conf.allowed_pairwise_cipher = ssid->pairwise_cipher;
1102 #ifdef IEEE8021X_EAPOL
1103                 conf.proactive_key_caching = ssid->proactive_key_caching < 0 ?
1104                         wpa_s->conf->okc : ssid->proactive_key_caching;
1105                 conf.eap_workaround = ssid->eap_workaround;
1106                 conf.eap_conf_ctx = &ssid->eap;
1107 #endif /* IEEE8021X_EAPOL */
1108                 conf.ssid = ssid->ssid;
1109                 conf.ssid_len = ssid->ssid_len;
1110                 conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey;
1111 #ifdef CONFIG_P2P
1112                 if (ssid->p2p_group && wpa_s->current_bss &&
1113                     !wpa_s->p2p_disable_ip_addr_req) {
1114                         struct wpabuf *p2p;
1115                         p2p = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss,
1116                                                           P2P_IE_VENDOR_TYPE);
1117                         if (p2p) {
1118                                 u8 group_capab;
1119                                 group_capab = p2p_get_group_capab(p2p);
1120                                 if (group_capab &
1121                                     P2P_GROUP_CAPAB_IP_ADDR_ALLOCATION)
1122                                         conf.p2p = 1;
1123                                 wpabuf_free(p2p);
1124                         }
1125                 }
1126 #endif /* CONFIG_P2P */
1127         }
1128         wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL);
1129 }