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