wpa_supplicant/wpas_glue.c

   1 /*
   2  * WPA Supplicant - Glue code to setup EAPOL and RSN modules
   3  * Copyright (c) 2003-2012, 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 wpa_drv_send_eapol(wpa_s, dest, proto, buf, len);
 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         return wpa_drv_send_ft_action(wpa_s, action, target_ap, ies, ies_len);
 547 }
 548
 549
 550 static int wpa_supplicant_mark_authenticated(void *ctx, const u8 *target_ap)
 551 {
 552         struct wpa_supplicant *wpa_s = ctx;
 553         struct wpa_driver_auth_params params;
 554         struct wpa_bss *bss;
 555
 556         bss = wpa_bss_get_bssid(wpa_s, target_ap);
 557         if (bss == NULL)
 558                 return -1;
 559
 560         os_memset(&params, 0, sizeof(params));
 561         params.bssid = target_ap;
 562         params.freq = bss->freq;
 563         params.ssid = bss->ssid;
 564         params.ssid_len = bss->ssid_len;
 565         params.auth_alg = WPA_AUTH_ALG_FT;
 566         params.local_state_change = 1;
 567         return wpa_drv_authenticate(wpa_s, &params);
 568 }
 569 #endif /* CONFIG_IEEE80211R */
 570
 571
 572 #ifdef CONFIG_TDLS
 573
 574 static int wpa_supplicant_tdls_get_capa(void *ctx, int *tdls_supported,
 575                                         int *tdls_ext_setup)
 576 {
 577         struct wpa_supplicant *wpa_s = ctx;
 578
 579         *tdls_supported = 0;
 580         *tdls_ext_setup = 0;
 581
 582         if (!wpa_s->drv_capa_known)
 583                 return -1;
 584
 585         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_SUPPORT)
 586                 *tdls_supported = 1;
 587
 588         if (wpa_s->drv_flags & WPA_DRIVER_FLAGS_TDLS_EXTERNAL_SETUP)
 589                 *tdls_ext_setup = 1;
 590
 591         return 0;
 592 }
 593
 594
 595 static int wpa_supplicant_send_tdls_mgmt(void *ctx, const u8 *dst,
 596                                          u8 action_code, u8 dialog_token,
 597                                          u16 status_code, u32 peer_capab,
 598                                          int initiator, const u8 *buf,
 599                                          size_t len)
 600 {
 601         struct wpa_supplicant *wpa_s = ctx;
 602         return wpa_drv_send_tdls_mgmt(wpa_s, dst, action_code, dialog_token,
 603                                       status_code, peer_capab, initiator, buf,
 604                                       len);
 605 }
 606
 607
 608 static int wpa_supplicant_tdls_oper(void *ctx, int oper, const u8 *peer)
 609 {
 610         struct wpa_supplicant *wpa_s = ctx;
 611         return wpa_drv_tdls_oper(wpa_s, oper, peer);
 612 }
 613
 614
 615 static int wpa_supplicant_tdls_peer_addset(
 616         void *ctx, const u8 *peer, int add, u16 aid, u16 capability,
 617         const u8 *supp_rates, size_t supp_rates_len,
 618         const struct ieee80211_ht_capabilities *ht_capab,
 619         const struct ieee80211_vht_capabilities *vht_capab,
 620         u8 qosinfo, int wmm, const u8 *ext_capab, size_t ext_capab_len,
 621         const u8 *supp_channels, size_t supp_channels_len,
 622         const u8 *supp_oper_classes, size_t supp_oper_classes_len)
 623 {
 624         struct wpa_supplicant *wpa_s = ctx;
 625         struct hostapd_sta_add_params params;
 626
 627         os_memset(&params, 0, sizeof(params));
 628
 629         params.addr = peer;
 630         params.aid = aid;
 631         params.capability = capability;
 632         params.flags = WPA_STA_TDLS_PEER | WPA_STA_AUTHORIZED;
 633
 634         /*
 635          * Don't rely only on qosinfo for WMM capability. It may be 0 even when
 636          * present. Allow the WMM IE to also indicate QoS support.
 637          */
 638         if (wmm || qosinfo)
 639                 params.flags |= WPA_STA_WMM;
 640
 641         params.ht_capabilities = ht_capab;
 642         params.vht_capabilities = vht_capab;
 643         params.qosinfo = qosinfo;
 644         params.listen_interval = 0;
 645         params.supp_rates = supp_rates;
 646         params.supp_rates_len = supp_rates_len;
 647         params.set = !add;
 648         params.ext_capab = ext_capab;
 649         params.ext_capab_len = ext_capab_len;
 650         params.supp_channels = supp_channels;
 651         params.supp_channels_len = supp_channels_len;
 652         params.supp_oper_classes = supp_oper_classes;
 653         params.supp_oper_classes_len = supp_oper_classes_len;
 654
 655         return wpa_drv_sta_add(wpa_s, &params);
 656 }
 657
 658 #endif /* CONFIG_TDLS */
 659
 660 #endif /* CONFIG_NO_WPA */
 661
 662
 663 enum wpa_ctrl_req_type wpa_supplicant_ctrl_req_from_string(const char *field)
 664 {
 665         if (os_strcmp(field, "IDENTITY") == 0)
 666                 return WPA_CTRL_REQ_EAP_IDENTITY;
 667         else if (os_strcmp(field, "PASSWORD") == 0)
 668                 return WPA_CTRL_REQ_EAP_PASSWORD;
 669         else if (os_strcmp(field, "NEW_PASSWORD") == 0)
 670                 return WPA_CTRL_REQ_EAP_NEW_PASSWORD;
 671         else if (os_strcmp(field, "PIN") == 0)
 672                 return WPA_CTRL_REQ_EAP_PIN;
 673         else if (os_strcmp(field, "OTP") == 0)
 674                 return WPA_CTRL_REQ_EAP_OTP;
 675         else if (os_strcmp(field, "PASSPHRASE") == 0)
 676                 return WPA_CTRL_REQ_EAP_PASSPHRASE;
 677         else if (os_strcmp(field, "SIM") == 0)
 678                 return WPA_CTRL_REQ_SIM;
 679         return WPA_CTRL_REQ_UNKNOWN;
 680 }
 681
 682
 683 const char * wpa_supplicant_ctrl_req_to_string(enum wpa_ctrl_req_type field,
 684                                                const char *default_txt,
 685                                                const char **txt)
 686 {
 687         const char *ret = NULL;
 688
 689         *txt = default_txt;
 690
 691         switch (field) {
 692         case WPA_CTRL_REQ_EAP_IDENTITY:
 693                 *txt = "Identity";
 694                 ret = "IDENTITY";
 695                 break;
 696         case WPA_CTRL_REQ_EAP_PASSWORD:
 697                 *txt = "Password";
 698                 ret = "PASSWORD";
 699                 break;
 700         case WPA_CTRL_REQ_EAP_NEW_PASSWORD:
 701                 *txt = "New Password";
 702                 ret = "NEW_PASSWORD";
 703                 break;
 704         case WPA_CTRL_REQ_EAP_PIN:
 705                 *txt = "PIN";
 706                 ret = "PIN";
 707                 break;
 708         case WPA_CTRL_REQ_EAP_OTP:
 709                 ret = "OTP";
 710                 break;
 711         case WPA_CTRL_REQ_EAP_PASSPHRASE:
 712                 *txt = "Private key passphrase";
 713                 ret = "PASSPHRASE";
 714                 break;
 715         case WPA_CTRL_REQ_SIM:
 716                 ret = "SIM";
 717                 break;
 718         default:
 719                 break;
 720         }
 721
 722         /* txt needs to be something */
 723         if (*txt == NULL) {
 724                 wpa_printf(MSG_WARNING, "No message for request %d", field);
 725                 ret = NULL;
 726         }
 727
 728         return ret;
 729 }
 730
 731 #ifdef IEEE8021X_EAPOL
 732 #if defined(CONFIG_CTRL_IFACE) || !defined(CONFIG_NO_STDOUT_DEBUG)
 733 static void wpa_supplicant_eap_param_needed(void *ctx,
 734                                             enum wpa_ctrl_req_type field,
 735                                             const char *default_txt)
 736 {
 737         struct wpa_supplicant *wpa_s = ctx;
 738         struct wpa_ssid *ssid = wpa_s->current_ssid;
 739         const char *field_name, *txt = NULL;
 740         char *buf;
 741         size_t buflen;
 742         int len;
 743
 744         if (ssid == NULL)
 745                 return;
 746
 747         wpas_notify_network_request(wpa_s, ssid, field, default_txt);
 748
 749         field_name = wpa_supplicant_ctrl_req_to_string(field, default_txt,
 750                                                        &txt);
 751         if (field_name == NULL) {
 752                 wpa_printf(MSG_WARNING, "Unhandled EAP param %d needed",
 753                            field);
 754                 return;
 755         }
 756
 757         wpas_notify_eap_status(wpa_s, "eap parameter needed", field_name);
 758
 759         buflen = 100 + os_strlen(txt) + ssid->ssid_len;
 760         buf = os_malloc(buflen);
 761         if (buf == NULL)
 762                 return;
 763         len = os_snprintf(buf, buflen,
 764                           WPA_CTRL_REQ "%s-%d:%s needed for SSID ",
 765                           field_name, ssid->id, txt);
 766         if (len < 0 || (size_t) len >= buflen) {
 767                 os_free(buf);
 768                 return;
 769         }
 770         if (ssid->ssid && buflen > len + ssid->ssid_len) {
 771                 os_memcpy(buf + len, ssid->ssid, ssid->ssid_len);
 772                 len += ssid->ssid_len;
 773                 buf[len] = '\0';
 774         }
 775         buf[buflen - 1] = '\0';
 776         wpa_msg(wpa_s, MSG_INFO, "%s", buf);
 777         os_free(buf);
 778 }
 779 #else /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 780 #define wpa_supplicant_eap_param_needed NULL
 781 #endif /* CONFIG_CTRL_IFACE || !CONFIG_NO_STDOUT_DEBUG */
 782
 783
 784 static void wpa_supplicant_port_cb(void *ctx, int authorized)
 785 {
 786         struct wpa_supplicant *wpa_s = ctx;
 787 #ifdef CONFIG_AP
 788         if (wpa_s->ap_iface) {
 789                 wpa_printf(MSG_DEBUG, "AP mode active - skip EAPOL Supplicant "
 790                            "port status: %s",
 791                            authorized ? "Authorized" : "Unauthorized");
 792                 return;
 793         }
 794 #endif /* CONFIG_AP */
 795         wpa_printf(MSG_DEBUG, "EAPOL: Supplicant port status: %s",
 796                    authorized ? "Authorized" : "Unauthorized");
 797         wpa_drv_set_supp_port(wpa_s, authorized);
 798 }
 799
 800
 801 static void wpa_supplicant_cert_cb(void *ctx, int depth, const char *subject,
 802                                    const char *cert_hash,
 803                                    const struct wpabuf *cert)
 804 {
 805         struct wpa_supplicant *wpa_s = ctx;
 806
 807         wpas_notify_certification(wpa_s, depth, subject, cert_hash, cert);
 808 }
 809
 810
 811 static void wpa_supplicant_status_cb(void *ctx, const char *status,
 812                                      const char *parameter)
 813 {
 814         struct wpa_supplicant *wpa_s = ctx;
 815
 816         wpas_notify_eap_status(wpa_s, status, parameter);
 817 }
 818
 819
 820 static void wpa_supplicant_set_anon_id(void *ctx, const u8 *id, size_t len)
 821 {
 822         struct wpa_supplicant *wpa_s = ctx;
 823         char *str;
 824         int res;
 825
 826         wpa_hexdump_ascii(MSG_DEBUG, "EAP method updated anonymous_identity",
 827                           id, len);
 828
 829         if (wpa_s->current_ssid == NULL)
 830                 return;
 831
 832         if (id == NULL) {
 833                 if (wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
 834                                    "NULL", 0) < 0)
 835                         return;
 836         } else {
 837                 str = os_malloc(len * 2 + 1);
 838                 if (str == NULL)
 839                         return;
 840                 wpa_snprintf_hex(str, len * 2 + 1, id, len);
 841                 res = wpa_config_set(wpa_s->current_ssid, "anonymous_identity",
 842                                      str, 0);
 843                 os_free(str);
 844                 if (res < 0)
 845                         return;
 846         }
 847
 848         if (wpa_s->conf->update_config) {
 849                 res = wpa_config_write(wpa_s->confname, wpa_s->conf);
 850                 if (res) {
 851                         wpa_printf(MSG_DEBUG, "Failed to update config after "
 852                                    "anonymous_id update");
 853                 }
 854         }
 855 }
 856 #endif /* IEEE8021X_EAPOL */
 857
 858
 859 int wpa_supplicant_init_eapol(struct wpa_supplicant *wpa_s)
 860 {
 861 #ifdef IEEE8021X_EAPOL
 862         struct eapol_ctx *ctx;
 863         ctx = os_zalloc(sizeof(*ctx));
 864         if (ctx == NULL) {
 865                 wpa_printf(MSG_ERROR, "Failed to allocate EAPOL context.");
 866                 return -1;
 867         }
 868
 869         ctx->ctx = wpa_s;
 870         ctx->msg_ctx = wpa_s;
 871         ctx->eapol_send_ctx = wpa_s;
 872         ctx->preauth = 0;
 873         ctx->eapol_done_cb = wpa_supplicant_notify_eapol_done;
 874         ctx->eapol_send = wpa_supplicant_eapol_send;
 875         ctx->set_wep_key = wpa_eapol_set_wep_key;
 876 #ifndef CONFIG_NO_CONFIG_BLOBS
 877         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 878         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 879 #endif /* CONFIG_NO_CONFIG_BLOBS */
 880         ctx->aborted_cached = wpa_supplicant_aborted_cached;
 881         ctx->opensc_engine_path = wpa_s->conf->opensc_engine_path;
 882         ctx->pkcs11_engine_path = wpa_s->conf->pkcs11_engine_path;
 883         ctx->pkcs11_module_path = wpa_s->conf->pkcs11_module_path;
 884         ctx->wps = wpa_s->wps;
 885         ctx->eap_param_needed = wpa_supplicant_eap_param_needed;
 886         ctx->port_cb = wpa_supplicant_port_cb;
 887         ctx->cb = wpa_supplicant_eapol_cb;
 888         ctx->cert_cb = wpa_supplicant_cert_cb;
 889         ctx->status_cb = wpa_supplicant_status_cb;
 890         ctx->set_anon_id = wpa_supplicant_set_anon_id;
 891         ctx->cb_ctx = wpa_s;
 892         wpa_s->eapol = eapol_sm_init(ctx);
 893         if (wpa_s->eapol == NULL) {
 894                 os_free(ctx);
 895                 wpa_printf(MSG_ERROR, "Failed to initialize EAPOL state "
 896                            "machines.");
 897                 return -1;
 898         }
 899 #endif /* IEEE8021X_EAPOL */
 900
 901         return 0;
 902 }
 903
 904
 905 #ifndef CONFIG_NO_WPA
 906 static void wpa_supplicant_set_rekey_offload(void *ctx, const u8 *kek,
 907                                              const u8 *kck,
 908                                              const u8 *replay_ctr)
 909 {
 910         struct wpa_supplicant *wpa_s = ctx;
 911
 912         wpa_drv_set_rekey_info(wpa_s, kek, kck, replay_ctr);
 913 }
 914 #endif /* CONFIG_NO_WPA */
 915
 916
 917 int wpa_supplicant_init_wpa(struct wpa_supplicant *wpa_s)
 918 {
 919 #ifndef CONFIG_NO_WPA
 920         struct wpa_sm_ctx *ctx;
 921         ctx = os_zalloc(sizeof(*ctx));
 922         if (ctx == NULL) {
 923                 wpa_printf(MSG_ERROR, "Failed to allocate WPA context.");
 924                 return -1;
 925         }
 926
 927         ctx->ctx = wpa_s;
 928         ctx->msg_ctx = wpa_s;
 929         ctx->set_state = _wpa_supplicant_set_state;
 930         ctx->get_state = _wpa_supplicant_get_state;
 931         ctx->deauthenticate = _wpa_supplicant_deauthenticate;
 932         ctx->set_key = wpa_supplicant_set_key;
 933         ctx->get_network_ctx = wpa_supplicant_get_network_ctx;
 934         ctx->get_bssid = wpa_supplicant_get_bssid;
 935         ctx->ether_send = _wpa_ether_send;
 936         ctx->get_beacon_ie = wpa_supplicant_get_beacon_ie;
 937         ctx->alloc_eapol = _wpa_alloc_eapol;
 938         ctx->cancel_auth_timeout = _wpa_supplicant_cancel_auth_timeout;
 939         ctx->add_pmkid = wpa_supplicant_add_pmkid;
 940         ctx->remove_pmkid = wpa_supplicant_remove_pmkid;
 941 #ifndef CONFIG_NO_CONFIG_BLOBS
 942         ctx->set_config_blob = wpa_supplicant_set_config_blob;
 943         ctx->get_config_blob = wpa_supplicant_get_config_blob;
 944 #endif /* CONFIG_NO_CONFIG_BLOBS */
 945         ctx->mlme_setprotection = wpa_supplicant_mlme_setprotection;
 946 #ifdef CONFIG_IEEE80211R
 947         ctx->update_ft_ies = wpa_supplicant_update_ft_ies;
 948         ctx->send_ft_action = wpa_supplicant_send_ft_action;
 949         ctx->mark_authenticated = wpa_supplicant_mark_authenticated;
 950 #endif /* CONFIG_IEEE80211R */
 951 #ifdef CONFIG_TDLS
 952         ctx->tdls_get_capa = wpa_supplicant_tdls_get_capa;
 953         ctx->send_tdls_mgmt = wpa_supplicant_send_tdls_mgmt;
 954         ctx->tdls_oper = wpa_supplicant_tdls_oper;
 955         ctx->tdls_peer_addset = wpa_supplicant_tdls_peer_addset;
 956 #endif /* CONFIG_TDLS */
 957         ctx->set_rekey_offload = wpa_supplicant_set_rekey_offload;
 958
 959         wpa_s->wpa = wpa_sm_init(ctx);
 960         if (wpa_s->wpa == NULL) {
 961                 wpa_printf(MSG_ERROR, "Failed to initialize WPA state "
 962                            "machine");
 963                 return -1;
 964         }
 965 #endif /* CONFIG_NO_WPA */
 966
 967         return 0;
 968 }
 969
 970
 971 void wpa_supplicant_rsn_supp_set_config(struct wpa_supplicant *wpa_s,
 972                                         struct wpa_ssid *ssid)
 973 {
 974         struct rsn_supp_config conf;
 975         if (ssid) {
 976                 os_memset(&conf, 0, sizeof(conf));
 977                 conf.network_ctx = ssid;
 978                 conf.peerkey_enabled = ssid->peerkey;
 979                 conf.allowed_pairwise_cipher = ssid->pairwise_cipher;
 980 #ifdef IEEE8021X_EAPOL
 981                 conf.proactive_key_caching = ssid->proactive_key_caching < 0 ?
 982                         wpa_s->conf->okc : ssid->proactive_key_caching;
 983                 conf.eap_workaround = ssid->eap_workaround;
 984                 conf.eap_conf_ctx = &ssid->eap;
 985 #endif /* IEEE8021X_EAPOL */
 986                 conf.ssid = ssid->ssid;
 987                 conf.ssid_len = ssid->ssid_len;
 988                 conf.wpa_ptk_rekey = ssid->wpa_ptk_rekey;
 989 #ifdef CONFIG_P2P
 990                 if (ssid->p2p_group && wpa_s->current_bss &&
 991                     !wpa_s->p2p_disable_ip_addr_req) {
 992                         struct wpabuf *p2p;
 993                         p2p = wpa_bss_get_vendor_ie_multi(wpa_s->current_bss,
 994                                                           P2P_IE_VENDOR_TYPE);
 995                         if (p2p) {
 996                                 u8 group_capab;
 997                                 group_capab = p2p_get_group_capab(p2p);
 998                                 if (group_capab &
 999                                     P2P_GROUP_CAPAB_IP_ADDR_ALLOCATION)
1000                                         conf.p2p = 1;
1001                                 wpabuf_free(p2p);
1002                         }
1003                 }
1004 #endif /* CONFIG_P2P */
1005         }
1006         wpa_sm_set_config(wpa_s->wpa, ssid ? &conf : NULL);
1007 }